CN204424206U - Checkout equipment - Google Patents

Abstract

The utility model discloses a kind of checkout equipment.Checkout equipment comprises: sampling apparatus, for gathering the sample that will be detected; Preliminary treatment sampling device, for the sample pretreatment from sampling apparatus; Analyzing device, for separating of from the sample after the pretreated sample of preliminary treatment sampling device and Analyze & separate.Checkout equipment of the present utility model realizes miniaturized, and can detect gaseous substance or particulate matter rapidly and accurately when not opening bag, and accuracy is high, is suitable for the safety checks such as airport, port, subway station.

Description

Checkout equipment

Technical field

The utility model relates to safety detection technology field, particularly, relates to a kind of checkout equipment.

Background technology

Ionic migration spectrometer (IMS) is one of trace detection equipment of main flow in the world at present, the difference of the mobility of IMS technology Main Basis different ions under weak electric field effect is carried out separation to sample and is differentiated, it is simple that it has structure, highly sensitive, the features such as the fast and reliable results of analysis speed, can on-line quick detection drugs, explosive, poison gas and biochemical gas etc., be widely used in military affairs (chemical warfare agent monitoring), civil (anti-terrorism, drug law enforcement etc.) etc. various fields, safeguarding national security, maintain social stability, strengthen defense force, maintain the aspects such as national economy and play huge effect.But, when the complex mixture adopting independent IMS to detect Multiple components detects, but easily fail to report, report by mistake.Therefore, arise at the historic moment like the mushrooms after rain by the various multiple techniques improved for the purpose of analytical instrument resolution capability.Wherein, cross sensitivity (cross sensitivity) problem existed when the separation characteristic that gas-chromatography-ion mobility spectrometry (GC-IMS) multiple techniques utilizes GC to give prominence to and IMS respond fast, highly sensitive advantage efficiently solves the low distinguishing ability of GC and IMS detects mixture, and the three-dimensional spectrum of chromatographic retention, drift time and signal strength signal intensity can be obtained, effectively can tell the sample of complicated component, detectability is better than ppb magnitude, and resolving time is from a few minutes to dozens of minutes.Compared with other multiple techniques, it is simple that GC-IMS has interface, maintenance cost is low, cost performance height waits various features, thus, GC-IMS multiple techniques obtains fast development in recent years, and has embodied sufficient advantage in miniaturized and portable, and greatly developing fast GC-IMS detection technique will be one of the important development direction of future secure detection technique.

Sampling device is the part that IMS is indispensable, and the quality of sampling device and sample injection method not only can affect the scope of application of instrument but also can affect instrument to the response difficulty of analyte and precision.For independent IMS, have multiple injector and match with it, technology is comparatively ripe.For independent GC, general employing headspace sampling mode, eliminate complicated sample pre-treatments (being suitable for fast detecting), but headspace sampling still needs a certain amount of sample of the acquisition of " destructiveness ", therefore its trace gas of being not suitable for not unpacking under situation is on-the-spot examines soon.

Utility model content

The purpose of this utility model is to provide a kind of checkout equipment, and it overcomes many deficiencies in prior art.Sampling apparatus is comprised, for gathering the sample that will be detected according to the utility model checkout equipment on the one hand; Preliminary treatment sampling device, for the sample pretreatment from sampling apparatus; With, analyzing device, for separating of from the sample after the pretreated sample of preliminary treatment sampling device and Analyze & separate.

According to one side of the present utility model, sampling apparatus comprises: cavity, has the sample inlet of the suction sample of the first end being positioned at cavity and the sample export for discharging sample near second end relative with first end being positioned at cavity; Cavity also comprises inflation entrance and the exhaust outlet of the wall being positioned at cavity,

Wherein inflate entrance to be configured to be blown into air-flow in cavity, exhaust outlet is configured to Exhaust Gas, to form tornado air-flow together with inflation entrance in cavity, described tornado air-flow is along the spiral advance of first end to the second end from cavity.

According to one side of the present utility model, the inwall of part cavity is formed frusto-conical shape, and the small diameter circular end of frusto-conical internal wall is near the sample inlet of cavity, and the large-diameter circular end of frusto-conical internal wall is near sample export.

According to one side of the present utility model, inflation entrance is arranged so that the inner surface in the axial admission direction and cavity inner wall of inflating entrance is close to tangent, and the axial admission direction of inflating entrance rolls tiltedly to sample export.

According to one side of the present utility model, exhaust outlet is configured to the peripheral gas of discharging the tornado air-flow formed in cavity.

According to one side of the present utility model, the opening direction of exhaust outlet is close to velocity attitude reverse of the air-flow of exhaust ports.

According to one side of the present utility model, sampling apparatus also comprises the hybrid chamber part of the second end being arranged on cavity, and sample is admitted to hybrid chamber part and sends into detection system by injection port.

According to one side of the present utility model, hybrid chamber part is by pellicle and other spaced-apart of cavity.

According to one side of the present utility model, hybrid chamber part arranges carrier gas passage to inject carrier gas so that and sample mix to hybrid chamber part.

According to one side of the present utility model, sampling apparatus also comprises the screen pack being positioned at first end, and screen pack is for stopping that large particulate matter enters sample inlet, and described screen pack comprises the oarse-grained coarse strainer of the filtration with rigidity and filters the fie screen of microparticle.

According to one side of the present utility model, sampling apparatus also comprises the temperature-controlling system for controlling cavity inner temperature, comprise be arranged in the wall of cavity for the heater that heats up and the temperature sensor for measuring tempeature.

According to one side of the present utility model, sampling apparatus also comprises the heat-insulation layer of the wall surrounding cavity.

According to one side of the present utility model, sampling apparatus also comprises the inflator pump be communicated with inflation entrance and the exhaust pump be communicated with exhaust outlet, and wherein exhaust pump flow velocity is 10 times or higher of inflator pump.

According to one side of the present utility model, preliminary treatment sampling device comprises: piston type absorber, has the adsorbent chamber that can be communicated with sampling apparatus, and this adsorbent chamber is configured to adsorb the sample gathered by sampling apparatus; Piston cylinder, is defined for and holds piston type absorber and the plunger shaft be communicated with adsorbent chamber; Thermal desorption chamber, to be communicated with plunger shaft with adsorbent chamber and to be configured to Thermal desorption and be attracted to sample in adsorbent chamber; And pump, to be communicated with plunger shaft by conduit and to be configured to, by sample collection structure, the sample leaked in environmental gas is drawn into adsorbent chamber,

Wherein, piston type absorber is configured to resolve between position at sample collection location and sample move in plunger shaft, in sample collection location, adsorbent chamber to be positioned at outside Thermal desorption chamber and with sample collection fabric connectivity to adsorb the sample gathered by sample collection structure, resolves adsorbent chamber in position be positioned in Thermal desorption chamber and make adsorbed sample in Thermal desorption chamber by Thermal desorption at sample.

According to one side of the present utility model, piston cylinder comprises the cylinder body be arranged on Thermal desorption chamber, cylinder body is provided with the sampling be communicated with plunger shaft and is connected valve, and one end of tube connector is configured to be connected in valve with being removably mounted on to sample hermetically.

According to one side of the present utility model, in tube connector, be placed with the drier for absorbing the moisture in gathered sample.

According to one side of the present utility model, at least one part of tube connector comprises Telescopic flexible pipe.

According to one side of the present utility model, piston type absorber comprises the piston body of rod and is connected to the adsorbent chamber of end of the piston body of rod, and adsorbent chamber comprises the network structure that inside is filled with adsorbent.

According to one side of the present utility model, adsorbent chamber comprises sorption channel, and this sorption channel is formed at when piston type absorber is arranged in sample collection location and is communicated with to receive the sample gathered with sampling apparatus.

According to one side of the present utility model, piston type absorber also comprises the heat insulating mattress of the one end away from the piston body of rod being removably connected to adsorbent chamber.

According to one side of the present utility model, the piston body of rod comprises cooling duct and is formed in the multiple through holes in the bottom of the piston body of rod, cooling duct is formed at when piston type absorber is arranged in sample collection location and is directly communicated with environmental gas, and be communicated with environmental gas by the cooling through hole being formed in piston cylinder when piston type absorber is arranged in sample parsing position, and described multiple through hole is configured to be communicated with plunger shaft with cooling duct.

According to one side of the present utility model, checkout equipment also comprises multiple sealing ring, around piston type absorber, described multiple sealing ring is arranged so that piston type absorber can be contained in piston cylinder hermetically.

According to one side of the present utility model, piston cylinder comprises and being arranged in Thermal desorption chamber to guide the guide rail of the motion of piston type absorber in Thermal desorption chamber.

According to one side of the present utility model, Thermal desorption chamber comprises cavity and is arranged on the bushing pipe in the inwall of cavity, and the outer wall of cavity is coated with heating arrangement.

According to one side of the present utility model, Thermal desorption chamber is also provided with carrier gas inlet, gas outlet and analytical instrument interface.

According to one side of the present utility model, checkout equipment also comprises the heat insulation structural be arranged between piston cylinder and Thermal desorption chamber.

According to one side of the present utility model, preliminary treatment sampling device comprises: asepwirator pump, absorber, piston/cylinder and parsing cylinder body, described parsing cylinder body has parsing chamber, described parsing cylinder body is provided with and exports with described parsing chamber communication with carrier gas entrance, carrier gas purge/shunting and the interface of linking parsing instrument, and the outer wall of described parsing cylinder body is provided with heating film and temperature sensor; Described piston/cylinder is provided with two plunger shaft, and each described plunger shaft installs a described absorber; Described piston/cylinder is arranged on described parsing cylinder body, and two described plunger shaft are all connected with described parsing chamber; Described piston/cylinder is provided with the sample air inlet and asepwirator pump gas port that are all communicated with two described plunger shaft, and described sample air inlet is connected with sampling apparatus, and described asepwirator pump gas port is connected with described asepwirator pump; Described absorber comprises the absorption screen drum and piston rod that are connected, and described absorption screen drum is used for depositing adsorbent; Described piston rod is slidably arranged in described plunger shaft, drive described absorption screen drum slide along described plunger shaft and can stretch in described parsing chamber, and described absorption screen drum can be communicated with simultaneously with asepwirator pump gas port with described sample air inlet.

According to one side of the present utility model, the outer wall of described parsing cylinder body is also provided with temperature sensor and heat-insulation layer.

According to one side of the present utility model, described absorption screen drum is provided with an absorption sieve mouth, and described absorption sieve mouth can be communicated with described sample air inlet.

According to one side of the present utility model, each described plunger shaft is provided with a cooling gas port, and described cooling gas port is provided with inlet valve; Described piston rod is provided with cooling cavity, and described cooling cavity can be communicated with cooling gas port, and the sidewall of described piston rod is provided with and the ventilation hole cooling cavity and be connected, and described ventilation hole can be communicated with asepwirator pump gas port.

According to one side of the present utility model, the bottom of described absorption screen drum arranges a mat insulation.

According to one side of the present utility model, between described absorber and described plunger shaft, be provided with multiple sealing ring.

According to one side of the present utility model, the inwall of described parsing cylinder body is provided with bushing pipe.

According to one side of the present utility model, between described piston/cylinder and described parsing cylinder body, be provided with thermal insulating disc.

According to one side of the present utility model, described parsing cylinder body is also provided with a carrier gas purge/point stream interface.

According to one side of the present utility model, analyzing device comprises Sample introduction device, and Sample introduction device comprises: bundling capillary pipe post, and the multiple capillary columns formed by nonmetallic materials are formed, and have arrival end and the port of export; With, temperature control system, is combined the temperature for controlling in boundling capillary column with bundling capillary pipe post; Analyzing device also comprises ion mobility spectrometry analytical equipment, ion mobility spectrometry analytical equipment is used for the sample that analytic sample gatherer imports, described ion mobility spectrometry analytical equipment comprises the chamber for gas reaction, chamber has the Sample introduction mouth for importing sample, wherein, the port of export of the bundling capillary pipe post of nonmetallic materials formation is directly inserted in the chamber of ion mobility spectrometry analytical equipment by the Sample introduction mouth of ion mobility spectrometry analytical equipment.

According to one side of the present utility model, analyzing device also comprises heat insulation positioner, be configured to connect Sample introduction device and ion mobility spectrometry analytical equipment between Sample introduction device and ion mobility spectrometry analytical equipment, and the heat trnasfer cut off between Sample introduction device and ion mobility spectrometry analytical equipment, so that point other independent temperature of Sample introduction device and ion mobility spectrometry analytical equipment controls.

According to one side of the present utility model, heat insulation positioner comprises the first link be connected with the port of export of Sample introduction device and the second link be connected with ion mobility spectrometry analytical equipment, an end of the first link sealing bundling capillary pipe post, the shape complementarity of the opening in the shape of the second link and the chamber of Ion transfer analytical equipment.

According to one side of the present utility model, heat insulation positioner is formed by high temperature resistant and plastic material that is excellent heat insulating performance, as PEEK, and polytetrafluoroethylene etc.

According to one side of the present utility model; Sample introduction device also comprises and is configured to surround and protects the round metal cover of bundling capillary pipe post, and the length of the round metal cover of bundling capillary pipe post is configured to round metal when in the chamber that bundling capillary pipe post is inserted into ion mobility spectrometry analytical equipment and overlaps the Sample introduction mouth not entering ion mobility spectrometry analytical equipment.

According to one side of the present utility model, the temperature control system of Sample introduction device comprises heat carrier, and heat carrier is configured to directly contact and surrounds the round metal cover of boundling capillary column, and at least one heater be embedded in heat carrier and at least one transducer.

According to one side of the present utility model, heat carrier comprises the multiple projections on heat carrier periphery, can be formed for arranging fluid passage or flowing through the space of fluid between multiple projection.

According to one side of the present utility model, the mode of the multiple projection of heating agent fluid line wind through or with spirally around the mode of heat carrier through multiple projection so that heat trnasfer between heating agent fluid line and heat carrier.

According to one side of the present utility model, Sample introduction device also comprises shell, and shell surrounds temperature control system.

According to one side of the present utility model, Sample introduction device also comprises heat-insulation layer, and heat-insulation layer is arranged between shell and heat carrier.

According to one side of the present utility model, heat-insulation layer is by the multiple raised support on heat carrier.

According to one side of the present utility model, ion mobility spectrometry analytical equipment is the positive and negative double mode transference tube comprising cation migration tube and anion migration tube, ion mobility spectrometry analytical equipment comprises ionized region, be configured to the carrier gas be passed into is ionized into reactive ion and reactive ion is sent into reaction zone, wherein ionized region be arranged on ion mobility spectrometry analytical equipment with the relative side of the port of export of bundling capillary pipe post.

Checkout equipment of the present utility model can realize collecting the amplification of gas loading matter, and sampling efficiency improves greatly, can realize not needing to open the scene of wrapping in and carry out centralized procurement sample, sample introduction, detection to the trace materials of the effumability of carrying, half volatile and surface contamination; This one-stop detection technique not only improves detection speed but also the privacy in safety check can be avoided to dispute, and operation principle, as sniffer dog, is very suitable for the field quick detection demand of airport, customs etc.; For the getting of surface contamination sample and gaseous sample, sample introduction fast detecting, under the condition exempting to unpack, realize the quick collection of sample, pre-concentration resolves and be separated, substantially increase the accuracy of analysis, save sample solution preparation time; When being especially embodied in multiple inspected object, can sample and enrichment to next one thing to be checked while previous checking matter is analyzed, save sample collection and detected total duration, effectively can improve throughput and the detection speed of analytical instrument, save cost; By carrying out the concentrated requirement that can reduce detector (as IMS, MS, DMS) Monitoring lower-cut to sample, reduce development difficulty and the cost of instrument, simultaneously can also the rate of false alarm of lowering apparatus; Be conducive to instrument to miniaturized and portability; The composition that bundling capillary pipe post is separated directly enters the reaction zone in the middle of double mode migration tube, avoid ionized region, both the object avoiding producing molecular ion fragment had been achieved, achieve again the function that negative ions differentiated by gas-chromatography-ion mobility spectrometry analytical equipment coupling spectrometer simultaneously, the large molecule making spectrometer simultaneously align negative electricity compatibility can respond, compensate for the deficiency of conventional art, widen bundling capillary pipe post-ion mobility spectrometry analytical equipment to the selectivity of detection material; The interface of bundling capillary pipe post-ion mobility spectrometry analytical equipment does not need adapter unit, bundling capillary pipe styletable mouth directly and ion mobility spectrometry analytical equipment be coupled, avoid because adapter unit is turned and turbulent flow occurs, effectively can mention detection sensitivity and the resolution of ion mobility spectrometry analytical equipment; Heat insulation positioner is designed between bundling capillary pipe post and ion mobility spectrometry analytical equipment reaction zone pedestal, have location and the heat insulating function of bundling capillary pipe post concurrently simultaneously, structure is simple, is convenient to fitting operation, eliminates and set up extra adapter unit and Temperature Control System Design thereof; The heater element of bundling capillary pipe post is evenly nested in thermal conductance cover, and the benefit of design is like this to achieve bundling capillary pipe post and is rapidly heated and in turn ensure that bundling capillary pipe post is heated evenly, and ensures that sample gasification separation is even, reduces and be separated discrimination; Thermal conductance cover, hot channel, heater element, pump, and the cooperation control realization of the controller temperature programming function of bundling capillary pipe post, the application of bundling capillary pipe post-ion mobility spectrometry analytical equipment coupling spectrometer can be extended to the separation tackling wide boiling range sample composition, improve the selectivity to amalyzing substances.

Accompanying drawing explanation

Fig. 1 illustrates the schematic diagram according to checkout equipment of the present utility model.

Fig. 2 illustrates the schematic diagram of the sampling apparatus of the checkout equipment according to the utility model embodiment.

Fig. 3 illustrates the schematic cross-section of the gas curtain guide body according to the utility model embodiment.

Fig. 4 illustrates the sampling apparatus bottom face pipeline outlet schematic diagram according to the utility model embodiment.Fig. 5 illustrates the schematic diagram of the preliminary treatment sampling device according to the utility model embodiment.

Fig. 6 illustrates the schematic diagram of the structure of the piston type absorber of the preliminary treatment sampling device according to the utility model embodiment.

Fig. 7 illustrates the schematic diagram of the preliminary treatment sampling device according to the utility model embodiment, and wherein preliminary treatment sampling device is in and resolves sample introduction state.

Fig. 8 illustrates the schematic diagram of another preliminary treatment sampling device according to the utility model embodiment.

Fig. 9 illustrates the schematic diagram of the analyzing device according to the utility model embodiment.

Figure 10 is the sectional view along A-A line of the analyzing device according to an embodiment of the present utility model;

Figure 11 is the sectional view along B-B and C-C line of the analyzing device according to an embodiment of the present utility model;

Figure 12 is according to the multiple projection on the heat carrier of the analyzing device of an embodiment of the present utility model and the layout of fluid line between multiple projection.

Embodiment

Although the utility model allows various amendment and interchangeable form, its specific embodiment is shown in the drawings by the mode of example, and will describe in this article in detail.But, should be appreciated that, the accompanying drawing of enclosing and detailed description are not in order to the utility model is restricted to disclosed concrete form, but contrary, be in order to cover fall into the spirit and scope of the present utility model that limited by the claim of enclosing all amendment, equivalents and replacement form.Accompanying drawing is to illustrate, because of instead of draw pari passu.

Illustrate with reference to the accompanying drawings below according to multiple embodiment of the present utility model.

As shown in Figure 1, according to an embodiment of the present utility model, a kind of checkout equipment is provided, comprises: sampling apparatus 100, for gathering the sample that will be detected; Preliminary treatment sampling device 200,300, for carrying out preliminary treatment to the sample from sampling apparatus; Analyzing device 400, for separating of from the sample after the pretreated sample of preliminary treatment sampling device 100 and Analyze & separate.Sampling apparatus 100, preliminary treatment sampling device 200,300 and analyzing device 400 can be connected by such as bellows and are communicated with.The layout of the various piece of the checkout equipment shown in Fig. 1 is to illustrate instead of limiting.

Be described in detail to multiple parts of checkout equipment respectively below.

Fig. 2 is the vertical section schematic diagram of the sampling apparatus 100 of an embodiment according to checkout equipment of the present utility model.According to the sampling apparatus of the tornado of embodiment of the present utility model, gas loading matter is had to the collecting function of amplification, it can real-time sampling.Sampling apparatus 100 comprises: end cap 101, has hole; With, be arranged in the pressure ring 102 on end cap 101, coarse strainer 103 and micro-filtration net 104 are arranged on above the perforate of end cap 101 by pressure ring 102, inner to stop that large particulate matter enters sampling apparatus 100.Coarse strainer not only can filter large particle, and has stronger rigidity, can stop the pressure from external environment condition and oarse-grained shock.Micro-filtration net is for filtering tiny solia particle or microparticle.Alternatively, can use the end cap 101 of one, wherein the end cap of one has opening, or is called sample inlet, and sample inlet is furnished with multihole device 103 or 104, to stop that large particulate matter passes through this end cap 101.

Also comprise gas curtain guide body 105 according to sampling apparatus 100 of the present utility model, end cap 101 can be sealed on above revolving gas curtain guide body 105 by O RunddichtringO 108, to be sealed by the upper ring surface of gas curtain guide body 105.Rotary gas curtain guide body 105 has drum type brake lateral wall, and the cross section that can have as shown in the figure is funnel shaped madial wall.In other words, gas curtain guide body 105 can be the combination of a cylinder and an interior funneling madial wall thereof.Alternatively, gas curtain guide body 105 can be the single-piece be integrally formed.The angle of funneling madial wall and drum type brake lateral wall can between 20 °-30 °, but other angles are also optional.The diameter of the lower surface of the funneling madial wall of gas curtain guide body 105 is at least the twice of upper surface diameter.In other words, the diameter of the under shed of funneling madial wall formation is at least the twice of the diameter of upper shed.This funnel shaped being designed for simulates formation cyclone.The medial surface of the funneling madial wall of gas curtain guide body 105 limits inner space, namely in sectional view as shown in Figure 2, and the inner space between two madial walls as shown in the figure.

Fig. 3 illustrates the cross sectional representation of sidewall along A-A of gas curtain guide body 105.As shown in Figure 3, the upper end of the funneling madial wall of gas curtain guide body 105 is evenly arranged multiple whirl hole 106, and the axial direction of these whirl hole 106 and the madial wall of funnel are close to tangent, and the axis of whirl hole 106 and the angle of vertical direction are between 45 °-90 °.Thus, whirl hole along tangent with the funneling madial wall of gas curtain guide body 105 and downwards (direction of arrow along shown in Fig. 2) towards, make gas flow out from whirl hole and flow downward along the direction that funneling madial wall is tangent.

The drum type brake lateral wall of gas curtain guide body 105 has inflation entrance 107.Rotate the drum type brake lateral wall of gas curtain guide body 105, funneling madial wall and end cap 101 and surround an annular space.Gas can enter annular space from inflation entrance 107, and then the air of annular space blows in the funnel shaped inner space of gas curtain guide body 105 along the whirl hole 106 on funneling madial wall, forms eddy flow gas curtain 130.

In the present embodiment, what illustrate is that sample sucks from upper end, discharges, charge air conditioning air-flow helical flow from the top down from lower end.But, this is an example, when sampling apparatus 100 horizontal positioned is facing to object to be detected, such as sample inlet is facing to when being positioned at the object to be detected on sampling apparatus 100 left side, the osculum side of gas curtain guide body 105 is facing to left side object to be detected, now infundibulate inwall 109 is horizontal arrangement forms, and sample advances from left to right.

According to embodiment of the present utility model, gas curtain guide body 105 can comprise gas ducting 118.Fig. 2 illustrates a kind of arrangement, and gas ducting 118 one end is communicated with inflation entrance 107, and the other end is communicated with the air pump 128 of inflation.The air pump 128 of inflation sends air wind to annular space along gas ducting 118 gas overcharging entrance 107, and the air wind of annular space blows in funnel shaped inner space along the whirl hole 106 on funneling madial wall and forms eddy flow gas curtain 130.

Sampling apparatus 100 also comprises wind guide chamber 109, and wind guide chamber has cylinder shape inner wall.Wind guide chamber 109 is nested in below gas curtain guide body 105 by O RunddichtringO.Wind guide chamber 109 can engage with other forms with gas curtain guide body 105, only otherwise impact forms tornado air-flow in wind guide chamber.Tornado air-flow is well known by persons skilled in the art, namely air-flow peripheral gas at a high speed or at least rotate spirally rapidly, namely in lateral cross section, the cross section of wind guide chamber (in the present embodiment on) is rotary motion, has forward the speed that (in the present embodiment from one end of sample inlet to sample export one end) moves in a longitudinal direction simultaneously; Air-flow center or axle center place gas are sucked forward along the longitudinal direction simultaneously.Wind guide chamber 109 is for maintaining tornado cyclone and the gas loading matter guiding tornado axle center to suck enters subsequent detection device.As shown in Figure 2, eddy flow gas curtain 130 advances downwards, enters wind guide chamber 109 and forms vortex gas-flow 131.Tornado swirling eddy 32 flows along wind guide chamber 109, and the whirlwind outlet 110 on the sidewall of wind guide chamber 109 lower end is discharged from exhaust pump interface 123 and through exhaust outlet 127.Air pump interface 123 is an exhaust outlet inherently, in order to increasing exhaust speed can at the several exhaust outlet of the many designs of bottom face, in the diagram exhaust outlet 127 is schematically shown, exhaust outlet 127 can be arranged on the optional position going out air-flow 134 in the face of the periphery of vortex gas-flow 131, it can be corresponding with 123, can be one also can be multiple, this exhaust outlet 127 draw in fig. 2.

Sampling apparatus 100 also comprises infundibulate bottom 113, and wind guide chamber 109 lower surface lid is sealed by O RunddichtringO 108 by it.Be provided with pellicle 111 between bottom 113 and wind guide chamber 109 lower port, pellicle 111 can stop the hydrone in inhaling air loading matter, amino molecule and other foreign-matter contaminations to enter and pollute chromatographic column or the migration tube of rear end.In addition, the formation of pellicle 111 also restricted cluster, and then the resolution improving instrument.

According to embodiment of the present utility model, two panels net metal 112 can be set, to carry out clamping protection to pellicle 111, pellicle 112 be broken through from air-flow.

Infundibulate bottom 113 can as the mixed zone of carrier gas and sample or hybrid chamber.Infundibulate bottom 113 can comprise carrier gas passage 121, and for injecting carrier gas, the carrier gas of coming in fully mixes with sample in funnel.Infundibulate bottom 113 can also comprise injection port 120, and the sample of collection is such as discharged by injection port 120 with carrier gas after mixing preheating, enters next stage analytical equipment.In some cases, sample and carrier gas can directly mix does not need heating and discharges.

Sampling apparatus 100 also comprises the muff 114 be arranged on wind guide chamber 109, is arranged on the heating rod 116 in wind guide chamber 109 and temperature sensor 117, and they form temperature control system thus, can carry out temperature control, such as heat temperature raising to wind guide chamber 109.Temperature in cavity can control at 50 DEG C-250 DEG C by temperature control system, high temperature contributes to high boiling gas loading matter Quick-gasifying and passes through pellicle smoothly, and be conducive to gasification sample and fully mix in funnel from the carrier gas that the carrier gas passage 121 funneling sidewall is come in, effectively can improve the detectable limit of instrument to high boiling substance.The sample gathered enters injection port 120 with being carried by carrier gas after carrier gas mixing preheating.Rotate gas curtain guide body 105, metal material that wind guide chamber 109, bottom 113 can adopt good in thermal property, its Surgery therapy cover 113 can adopt ~ the thick aeroge of 10mm or glass or ceramic wool.Alternatively, polytetrafluoroethylene outer cover 115 can be adopted to overlap cover on outside heat-insulation layer 114.

The bottom face of outer cover 115 can arrange and comprise inflator pump interface 122, exhaust pump interface 123, GC post/Ion transfer interface tube 124, heating rod lead-out wire 125, temperature sensor lead-out wire 26, exhaust outlet 127 and carrier gas interface tube 136, as shown in Figure 4.Wherein, inflator pump interface 122 and exhaust pump interface 123 can connect an air pump 128 respectively, for continuing to provide gas pressure to form tornado air-flow in sampling apparatus 100 inside.Exhaust pump interface 123 is expected to be arranged so that vapour lock is little as far as possible, and thus the opening of exhaust pump interface in wind guide chamber expects the direction in face of air-flow, makes air-flow easily flow into exhaust pump interface.Exhaust pump interface 123 also can not connect air pump 128 and directly be used as exhaust outlet.Attracting to make tornado the air-flow amplified to discharge, several exhaust outlet 127 can be designed more.GC post/Ion transfer interface tube 124 can connect pretreatment unit 200 or 300, also can connect GC post, also directly can connect transference tube.Carrier gas interface tube 136 connects molecular sieve 135 to make carrier gas be purified.

The power of air pump 128 as shown in the figure can regulate as required.Because tornado has gas collection enlarging function, the flow velocity of exhaust pump is more than 10 times of inflator pump.

The air stream be filled with in order to avoid inflator pump 128 causes interference to the target component sucked from sampled targets 133, the air-source distance samples target 133 that inflator pump can be gathered on the one hand is far away as far as possible, air pump and sampling stomidium space out by the flexible conduit turned to as available flexible, filtration, purification can be carried out on the other hand to the air entering inflator pump, avoid gas cross to pollute, improve the sensitivity of the location sampling of sampling instrument.

Sampling, the sample introduction process gas to the tornado sampling apparatus 100 amplifying collecting function according to embodiment of the present utility model is below described.

The front aperture of sampling apparatus 100 of the present utility model is aimed at sampled targets 133 in the place of 5-10cm, opens inflation and exhaust air pump 128 simultaneously.Aeration gas flow 129 is filled with in the annular space of gas curtain guide body 105 along gas-filled tube by inflation entrance 107, in annular space, gas pressure is produced under the blast continued of air pump 128, under gas pressure, air blows in funnel inner space along the whirl hole 106 in gas curtain guide body 105, due to the particular configuration of whirl hole 106, air is blown in inner space along specific direction, forms infundibulate thus and rotates gas curtain 130.When air pump 128 be constantly blown into air, the rotation gas curtain 130 constantly formed moves along wind guide chamber 109 inwall, that is, around wind guide chamber 109 central axis 132 fast rotational and move down simultaneously, form tornado air-flow 131.Owing to rotating the effect of the centrifugal force formed, the central pressure of tornado air-flow reduces significantly, and such as, the air pressure of central axis 132 is lower than ambient air pressure about 10 times, will produce very large suction force thus at the central axis place of wind guide chamber 109.Suction force can make the neighbouring interior gas loading matter of target 133 be sampled around the front aperture of wind guide chamber 109, be inhaled into the wind axis immediate vicinity of wind guide chamber 109, and form sample gas column, central axis 132 along tornado air-flow moves down, and final sample arrives sample introduction pellicle 111.This process is similar to the phenomenon of " the dragon water intaking " of occurring in nature tornado.

On the one hand, the sample gathered enters in the funnel shaped chamber of bottom 113 through pellicle 111, preheating situation Quick-gasifying and fully mix with the carrier gas stream 137 that the carrier gas passage 121 in the sidewall from bottom 113 is come in, carrier gas is afterwards carried sample and is entered sample introduction interface 120.

On the other hand, for the gas of the periphery of the pivot of tornado air-flow 131, form cyclone in tornado air-flow 131 periphery to move along wind guide chamber 109 sidewall, time bottom wind guide chamber, the gas of peripheral cyclone enters outlet 110, and this part gas formation whirlwind goes out air-flow 134 and discharges through exhaust outlet 127.Outlet 110 is arranged to towards the airflow direction of cyclone, shown in figure 2 in orientation, outlet 110 can obliquely, and outlet can not be towards chamber central but the tangential direction of deflection inwall, so that the opening direction of outlet is closer towards the velocity attitude of air-flow in exit.That is, although the opening direction of outlet 110 is not strict contrary at the velocity attitude in exit with air-flow, but reverse close to the velocity attitude of air-flow in exit of opening direction of outlet 110, is discharged so that gas more easily enters in outlet 110.

By this process, sampling apparatus 100 is aspirated specimens molecule constantly, so realizes the amplification collection to gas loading matter.

This tornado real-time sampling device 100 with gas amplification collecting function directly can be used as the injector of the analytical instrument such as IMS, GC, MS, GC-IMS, GC-MS, does not repeat them here.

Following description is according to another embodiment of sampling apparatus of the present utility model.The present embodiment and above-described embodiment similar, below clear, wherein different parts is only described.

According in embodiment of the present utility model, sampling apparatus 100 comprises first end and second end relative with first end.Sampling apparatus 100 comprises cavity 109, and a part 105 for cavity is infundibulate or conical butt.Particularly, cavity comprises the sample inlet of the suction sample be positioned near first end and is positioned at the sample export 120 of the discharge sample near the second end.The sample inlet of cavity 109 is positioned near the rounded ends of the small diameter of Frusto-conical inwall 109, and the closer sample export of larger diameter rounded ends of Frusto-conical inwall.

In other words, the small-caliber end of infundibulate inwall 109 is used for facing to sample, and heavy caliber end is towards the sample export of discharging sample.It should be noted that the orientation of the cavity illustrated in the drawings be sample inlet upper, discharge sample sample export under, thus infundibulate inwall 109 is inverted funnel arrangement forms.But, this is a kind of example, when sampling apparatus 100 horizontal positioned is facing to object to be detected, such as sample inlet is facing to when being positioned at the object to be detected on sampling apparatus 100 left side, the osculum side of infundibulate inwall 109 is facing to left side object to be detected, and now infundibulate inwall 109 is horizontal arrangement forms.

Cavity is also provided with inflation entrance 106, and inflation entrance 106 is configured to be blown into air-flow in cavity to produce tornado air-flow in cavity.Cavity is also provided with exhaust outlet 110, and exhaust outlet is configured to Exhaust Gas to form tornado air-flow together with inflation entrance 106 in cavity.Particularly, inflation entrance 106 is arranged so that the inner surface on the edge, axial admission direction and cavity inner wall of inflating entrance 106 is close to tangent, and the axial admission direction of inflating entrance 106 tilts towards sample export, as the cross section along A-A line in Fig. 2 that Fig. 3 schematically illustrates.

In the present embodiment can not gas curtain guide body 105 be set separately, but, also can realize the effect similar with above-mentioned gas curtain guide body 105 by arranging inflation entrance 106 and corresponding inlet channel as above near the close sample inlet of cavity inner wall.Further, the annular space of the gas curtain guide body as described in above-described embodiment can be formed in inside cavity, annular space is configured to hold gas to form air pressure in annular space, and by the inner space insufflation gas of inflation entrance to sampling apparatus 100.

Exhaust outlet 110 is positioned at the wall of cavity, its arrange form can with of the present utility model before embodiment in exhaust outlet similar, the air-flow that exhaust outlet 110 advances facing to the spiral of the tornado from inflation entrance 106, makes air-flow under comparatively slight drag, enter exhaust outlet 110 as much as possible.Exhaust outlet 110 discharges the peripheral gas of the tornado air-flow formed in cavity.Peripheral gas is not defined as air, wherein may containing a small amount of sample.The opening direction of exhaust outlet is close to velocity attitude reverse of the air-flow of exhaust ports.

Sampling apparatus 100 also can comprise the screen pack of the first end being positioned at sample inlet side, and screen pack is for stopping that large particulate matter enters sample inlet, and described screen pack comprises the oarse-grained coarse strainer of the filtration with rigidity and filters the fie screen of microparticle.

Sampling apparatus 100 also can comprise the temperature-controlling system for controlling cavity inner temperature, comprise be arranged in the wall of cavity for the heater that heats up and the temperature sensor for measuring tempeature.Sampling apparatus 100 also can comprise the heat-insulation layer of the wall surrounding cavity.Cavity can be the cavity be integrally formed in the present embodiment, also can be by such as welding, the mode such as riveted joint cavity that multiple part bonding is formed together, these generation types of the technical solution of the utility model are not produced to the impact of essence to the air-flow of inside cavity.

Cavity in the present embodiment also can arrange the such as end cap 101 identical with above embodiment, filter screen 103,104, inflate and be vented air pump 128, sample introduction pellicle 111, temperature control system, heat-insulation layer etc.Cavity in the present embodiment can also comprise the mixed zone for carrier gas and sample mix.That is, in the bottom of cavity, cavity has mixed zone, and mixed zone and cavity for the formation of the spaced-apart of tornado air-flow, such as, can use pellicle 111 to isolate.According to the present embodiment, two panels net metal 112 can be set, to carry out clamping protection to pellicle 111, pellicle 112 be broken through from air-flow.The bottom 113 of cavity can comprise carrier gas passage 121, and for injecting carrier gas, the carrier gas of coming in fully mixes with sample in funnel.The bottom 113 of cavity can also comprise injection port 120, and the sample of collection is such as discharged by injection port 120 with carrier gas after mixing preheating.Similarly, the bottom face of cavity can be identical with the embodiment before the utility model, as shown in Figure 4.The bottom face of cavity comprises inflator pump interface 122, exhaust pump interface 123, GC post/Ion transfer interface tube 124, heating rod lead-out wire 25, temperature sensor lead-out wire 126, exhaust outlet 127 and carrier gas interface tube 136.Inflator pump interface 122 and exhaust pump interface 123 can connect an air pump 128 respectively, such as inflator pump and exhaust pump, for continuing to provide gas pressure to form tornado air-flow in sampling apparatus 100 inside, wherein exhaust pump flow velocity is 10 times or higher of inflator pump.Exhaust pump interface 123 is expected to be arranged so that vapour lock is little as far as possible, and thus the opening of exhaust pump interface in wind guide chamber expects the direction in face of air-flow, makes air-flow easily flow into exhaust pump interface.Exhaust pump interface 123 also can not connect air pump 128 and directly be used as exhaust outlet.Attracting to make tornado the air-flow amplified to discharge, several exhaust outlet 127 can be designed more.GC post/Ion transfer interface tube 124 can connect GC post and also directly can connect transference tube.Carrier gas interface tube 136 connects molecular sieve 135 to make carrier gas be purified.

In addition, according to the another embodiment of sampling apparatus of the present utility model, the frusto-conical internal wall of a part for the cavity in the utility model can not be strict conical butt, and can be a spherical part.That is, the inwall of a part for cavity is cambered surface, as long as the diameter that sample enters the cavity inner wall of side is less, the cavity inner wall diameter of discharging sample side is comparatively large to form tornado air-flow in inside cavity.

According to another embodiment of checkout equipment of the present utility model, an embodiment of the preliminary treatment sampling device of checkout equipment schematically illustrates in Figure 5 in more detail.

As shown in Figure 4, preliminary treatment sampling device mainly comprises piston type absorber 202, piston cylinder 203, Thermal desorption chamber 204 and pump 205.Below by the structure of detailed all parts and operation.

Sampling apparatus 100 to be connected with piston cylinder 203 by tube connector and to be communicated with.

Can be placed with drier in tube connector, drier can absorb in sample collection process the moisture, moisture etc. that are mixed in gathered sample, can play the protection chromatographic column of analytical instrument, the effect of migration tube.Drier can be enclosed in drier bag, can arrange the structure for fixing drier or drier bag in tube connector, as projection, moves under wrapping in the swabbing action of pump to prevent drier or drier.

At least one part of tube connector, as the part after drier, can be made up of Telescopic flexible pipe or bellows, can can stretch and/or rotate this Telescopic flexible pipe or bellows when sampling, thus the direction of adjustment sample collection mouth, have great convenience for the user the collection to sample.The end of tube connector is configured to be connected to piston cylinder 203 hermetically and removably.

Fig. 6 schematically shows an example of the piston type absorber of the preliminary treatment sampling device of the utility model embodiment.As shown in the figure, piston type absorber 202 be on the whole one can in piston cylinder 203 reciprocating cylinder-piston form, mainly comprise the piston body of rod 221 and be connected to the adsorbent chamber 222 of end of the piston body of rod 221.The piston body of rod 221 can be made up of the heat resistant type material (as polytetrafluoro) of stable chemical nature.

In one example, adsorbent chamber 222 can comprise the network structure that inside is filled with adsorbent 223, and namely wall upper shed in chamber has netted aperture, and adsorbent is placed in inside, chamber.The characterization of adsorption of sorbent material can carry out selectivity interpolation according to different detection demands, this selection mode as required, enhances the selective absorption to detecting sample to a certain extent.Be appreciated that the diameter of filled adsorbent should be greater than cancellated mesh aperture.As shown in Figure 6, adsorbent chamber 222 can have part hollow form, namely can comprise sorption channel 226, and it can be L shape or crutch shape, and chamber wall has opening.As will be described, this sorption channel sample time and sample collection fabric connectivity, be sucked into recent sample via tube connector to receive.Like this, sample can not only be facilitated to enter adsorbent, and the contact area of sample and adsorbent can be increased, be conducive to sample adsorption.

In one example, the piston body of rod 221 can comprise cooling duct 227 and the multiple through holes 228 be formed in the bottom of the piston body of rod.As mentioned below, cooling duct 227 is formed at when piston type absorber is arranged in sample collection location and is directly communicated with environmental gas, and is communicated with environmental gas by the cooling through hole being formed in piston cylinder when piston type absorber is arranged in sample parsing position.Cooling duct 227 also can be L shape or crutch shape, has the opening leading to environmental gas; Through hole 228 is configured to be communicated with the inside of cooling duct 227 with piston cylinder 203.The piston body of rod of this hollow can reduce the quality of piston type absorber on the one hand, be conducive to absorber rapid temperature-regulating, also pump 205 can be communicated with the cold gas entrance 235 (see Fig. 5 with Fig. 7) on the top of piston cylinder 203 when resolving sample introduction on the other hand, pump is adopted to bleed and can carry out air-cooled to absorber top, accelerate the cooling rate on piston type absorber top, contribute to the fast cooling being positioned at the adsorbent chamber of piston type absorber the latter half and the adsorbent in chamber, and then be conducive to sample adsorption.

According to an embodiment of the present utility model, piston type absorber 202 can also comprise the heat insulating mattress 224 of the one end away from the piston body of rod 221 being removably connected to adsorbent chamber 222, and namely adsorbent chamber 222 is between the piston body of rod 221 and heat insulating mattress 224.Exemplarily, by extracting piston type absorber or backing out piston cylinder, and outward winding or remove the heat insulating mattress being positioned at absorber bottoms, the adsorbent in adsorbent chamber can be changed.Heat insulating mattress can be made up of polytetrafluoro material, the setting of heat insulating mattress can reduce the heat trnasfer of Thermal desorption chamber to adsorbent chamber, can effectively ensure to carry out at piston type absorber to sample/enrichment time adsorbent chamber and adsorbent keep low temperature, as being near ambient, be conducive to sample adsorption and enrichment.

In one embodiment, multiple sealing ring 225 is set on piston type absorber 202, as on the outer surface of piston type absorber 202, piston type absorber 202 can be contained in piston cylinder 203 hermetically.Preferably, when the layout of sealing ring 225 makes to move back and forth between the extreme higher position of piston type absorber 202 in piston cylinder 203 (as sample collection location) and extreme lower position (as position resolved by sample), piston type absorber 202 can both be kept sealing with the inwall of piston cylinder 203 and contacted by sealing ring 225, as best shown in figures 5 and 7.Exemplarily, at the upper-lower position place of the opening of the upper and lower position of the opening of sorption channel 226 and cooling duct 227, sealing ring 225 is all provided with, as shown in Figure 6.

The end of the piston body of rod 221 of piston type absorber 202 can also be provided with drawing handle 229, and drawing handle 229 is for by the reciprocating motion in piston cylinder 203 of user's push-and-pull piston type absorber 202.

As best shown in figures 5 and 7, piston cylinder 203 mainly comprise cylinder body 231 with for holding piston type absorber 202 and the plunger shaft 232 be communicated with adsorbent chamber 222.Cylinder body 231 can be made by large by intensity, heat-resisting polytetrafluoro material that is good, stable chemical nature, and limits plunger shaft 232 at least partially.Cylinder body 231 is arranged on Thermal desorption chamber 204, cylinder body 231 is provided with the sampling be communicated with plunger shaft 232 and is connected valve 233.As mentioned above, the tube connector end of sampling apparatus 100 can be connected in valve 233 with removably installing or be plugged on to sample hermetically, thus realizes the inner sample passage of sampling apparatus 100 and being communicated with of plunger shaft 232.Sampling connects the valve that can be provided with the opening and closing controlling this connection in valve 233.

Cylinder body 231 is also provided with pump and connects valve 234, pump 205 is connected to valve 234 by conduit 251 and then is communicated with plunger shaft 232, so that when sample/enrichment or pre-concentration, pump 205, conduit 251, pump connect valve 234, plunger shaft 232, sampling connects valve 233, tube connector sample collection mouth forms communication paths, open pump 205 can by environmental gas sample to be sampled (as, volatility, half volatile material or surface contamination material) be drawn in adsorbent chamber 222, adsorb/pre-concentration by adsorbent chamber 222.During sample, pump 205 continuous firing, can in adsorbent chamber enrichment or pre-concentration sample.In sampling process, whole piston type absorber is in room temperature.

Piston cylinder 203 can also comprise and being arranged on to guide the guide rail 236 of the motion of piston type absorber 202 in Thermal desorption chamber 202 in Thermal desorption chamber 204, and it can effectively prevent piston type absorber 202 from rocking, enhancing firmness.Guide rail 236 is connected to cylinder body 231, and limits a part for plunger shaft 232.

As best shown in figures 5 and 7, the inner space for carrying out Thermal desorption to sample that mainly comprises cavity 241 and limited by cavity 241, Thermal desorption chamber 204.Cavity 241 is provided with carrier gas inlet 242, shunting and/or purges the interface 244 of gas outlet 243 and the analytical instrument for being connected such as chromatographic column or IMS and so on.

In the cavity in Thermal desorption chamber 204, can seal the bushing pipe 245 implanting stable chemical nature, it can effectively avoid sample to contact with the direct of metallic walls in Thermal desorption chamber.Bushing pipe 245 can regularly replace, and prevents sample to the direct pollution in Thermal desorption chamber, reduces sample distortion rate, improve sample detection precision and reliability.Chamber outer wall in Thermal desorption chamber 204 can be coated with heating arrangement or heating film, heats for giving Thermal desorption chamber 204.Thermal desorption chamber 204 can be provided with temperature sensor, as on chamber outer surface, for detecting and monitor the temperature in Thermal desorption chamber in real time.In addition, the chamber outer wall in Thermal desorption chamber 204 can also be coated with heat-preservation cotton, for giving the insulation of Thermal desorption chamber, to save energy consumption.Heating arrangement, temperature sensor and/or heat-preservation cotton form the parts of Thermal desorption temperature control system, under the control of the controller the temperature in Thermal desorption chamber being maintained a constant high temperature place, as 80 DEG C ~ 300 DEG C.Thermal desorption chamber can adopt temperature programming pattern, can reduce power consumption.

Can also arrange between Thermal desorption chamber 204 and piston cylinder 203 or insert heat insulation structural, as porous ceramic adiabatic disks, it effectively can completely cut off the heat exchange between Thermal desorption chamber and the first half (as the piston body of rod) of piston type absorber during sample is resolved, isolated heat exchange between Thermal desorption chamber and piston type absorber effectively during sample collection, and isolated heat exchange between Thermal desorption chamber and piston cylinder the first half effectively, ensure that in sample collection process, whole piston type absorber is all in room temperature, is conducive to the collection of sample.

When needs carry out Thermal desorption sample introduction to sample, first start Thermal desorption temperature control system and the temperature in Thermal desorption chamber is maintained a suitable constant high temperature (80 DEG C ~ 300 DEG C), being pushed into fast by the piston type absorber being adsorbed with sample has in the Thermal desorption chamber of high temperature, the adsorbent be pushed in thermal desorption chamber is heated rapidly, in adsorbent chamber, the sample of absorption is at high temperature separated out instantaneously, the sample of separating out mixes with the carrier gas through preheating that the carrier gas inlet from Thermal desorption chamber is introduced, and is finally brought in detector or analytical instrument by carrier gas and carries out detecting or analyzing.

As mentioned above, while adsorbent chamber being pushed in Thermal desorption chamber, cold gas entrance 235 on pump 205, plunger shaft 232, the multiple through holes 228 be formed in the piston body of rod, cooling duct 227 and piston cylinder 203 forms communication paths, therefore, pump 205 can be adopted to bleed to carry out air-cooled to the first half (comprising the piston body of rod) of the piston type absorber stayed outside Thermal desorption chamber, is conducive to sample adsorption next time and enrichment or pre-concentration.

This preliminary treatment sampling device with enrichment or pre-concentration function directly can be used as IMS spectrometer or GC, also can be used as IMS-GC, the injector of the trace chemical analyzers such as GC-MS, does not repeat them here.

The operation of above-mentioned preliminary treatment sampling device is described hereinafter with reference to Fig. 5 and 7.First, pull and positioning piston formula absorber 202 in sample collection location as shown in Figure 5, adsorbent chamber 222 is communicated with sampling apparatus 100, now, pump 205, conduit 251, pump connects valve 234, a part (comprising the part around adsorbent chamber) for plunger shaft 232, sampling connects valve 233, tube connector and sample collection mouth 124 form communication paths by means of sealing ring 225, subsequently, start pump 205 to work, with by environmental gas sample to be sampled (as, volatility, half volatile material or surface contamination material) be drawn in adsorbent chamber 222, / pre-concentration is adsorbed by adsorbent chamber 222.During sample, pump 205 can continuous firing, with enrichment in adsorbent chamber or pre-concentration sample.In sampling process, whole piston type absorber is in room temperature.

Then, start Thermal desorption temperature control system so that the temperature in Thermal desorption chamber 204 is maintained a constant high temperature place, then fast moving piston type absorber 202 is positioned at sample as shown in Figure 7 and resolves in position, makes adsorbent chamber 222 be positioned in Thermal desorption chamber 204.Adsorbent chamber 222 can be sealed in the bottom of plunger shaft 232 by sealing ring 225 and and then be sealed in Thermal desorption chamber 204.Now, the adsorbent be pushed in thermal desorption chamber 204 is heated rapidly, in adsorbent chamber 222, the sample of absorption is at high temperature separated out instantaneously, the sample of separating out mixes with the carrier gas through preheating that the carrier gas inlet 242 from Thermal desorption chamber 204 is introduced, and is finally brought in detector or analytical instrument (not shown) by carrier gas and carries out detecting or analyzing.

During the parsing of sample in Thermal desorption chamber, pump 205, conduit 251, pump connect valve 234, a part (part namely outside Thermal desorption chamber 204) for plunger shaft 232, the multiple through holes 228 be formed in the piston body of rod 221, cooling duct 227 form with the cold gas entrance 235 on piston cylinder 203 path or space that are communicated with environmental gas.Therefore, pump 205 can be adopted to bleed to carry out air-cooled to the first half (comprising the piston body of rod) of the piston type absorber 202 stayed outside Thermal desorption chamber 204, thus the part be positioned at outside Thermal desorption chamber of piston type absorber can be remained on room temperature, be conducive to sample adsorption next time and enrichment or pre-concentration.

With reference to Fig. 8, the preliminary treatment sampling device 300 of another embodiment of checkout equipment of the present utility model is shown.Preliminary treatment sampling device 300 comprises: asepwirator pump 320, absorber 330, piston/cylinder 340 and parsing cylinder body 350.Resolve cylinder body 350 and there is parsing chamber 356, resolve cylinder body 350 to be provided with and to resolve analytical instrument interface 352 that chamber 356 is communicated with, carrier gas inlet 351 and carrier gas and shunt/purge interface 353, the outer wall of parsing cylinder body 350 is provided with heating film and temperature sensor (scheming not shown).Analytical instrument interface is used for being connected with chromatographic column, IMS, MS or DMS etc.; Carrier gas inlet is connected with carrier gas feedway, for receiving carrier gas; Heating film is used for adding Thermal desorption chamber 356, and temperature sensor is used for reading in real time resolves cavity temperature and is connected with outside temperature control circuit with the control realized temperature.Piston/cylinder 340 is provided with two plunger shaft 341, and each plunger shaft 341 installs an absorber 330.Piston/cylinder 340 is arranged on resolves on cylinder body 350, and two plunger shaft 341 are all connected with parsing chamber 356.The bottom of piston/cylinder 340 is stretched into and is resolved in chamber 356, and the front portion of plunger shaft 341 is opening, is connected with parsing chamber 356.Piston/cylinder 340 is provided with the sample air inlet 342 and asepwirator pump gas port 343 that are all communicated with two plunger shaft 341, and sample air inlet 342 is connected by corrugated flexible hose 312 with sampler 100, and asepwirator pump gas port 343 is connected with asepwirator pump 320.Absorber 330 comprises the absorption screen drum 332 and piston rod 331 that are connected.Absorption screen drum 332 is that a sidewall establishes punctulate cylinder, and absorption screen drum 332 is for depositing adsorbent.The overall structure of absorber 330 is a reciprocating cylindrical piston.Piston rod 331 is slidably arranged in plunger shaft 341, drive absorption screen drum 332 to slide along plunger shaft 341 and can stretch into and resolve in chamber 356, and absorption screen drum 332 can be communicated with asepwirator pump gas port 343 with sample air inlet 342 simultaneously.Conveniently push-and-pull piston rod 331, is provided with a piston handle 371 in the rear end of piston rod.

In use, adsorbent is placed in absorption screen drum 332, first by absorber 330 pull-up, absorption screen drum 332 is communicated with sampler 100 and asepwirator pump 320, asepwirator pump 320 air-breathing, sampler 100 absorbs sample gas, sample gas flows through absorption screen drum 332, sample in sample gas is by sorbent, after sample size enrichment on upon adsorption dose, absorber 330 is pressed in pre-heated parsing chamber 356 and carries out sample precipitation, the sample of separating out resolve in chamber 356 with through preheating flow into the carrier gas Homogeneous phase mixing of resolving in chamber from carrier gas inlet 351 after enter GC-IMS from analytical instrument interface 352, IMS, GC-MS, in GC-DMS or other analytical instrument, detect.Two absorbers 330 of the present utility model can be used alternatingly, when namely sampling during a pull-up (a rear test sample), another is pressed down and carries out sample parsing and detection (last test sample), enable sampling device full-time, absorb sample rapidly, especially embodied obvious detection superiority when process has multiple test sample.Absorber can concentrate sample, improves the detection accuracy of analytical instrument.

According to an embodiment, absorption screen drum 332 is provided with an absorption sieve mouth 372, absorption sieve mouth 372 can be communicated with sample air inlet 342, when sample gas enters, enter absorption screen drum from absorption sieve mouth 372 rapidly, adopt shape as the structure of 372, effectively increase the adsorption area in the unit interval, improve the speed of example enrichment.Preferably, sample air inlet 342 and asepwirator pump gas port 343 are arranged along the axial direction of plunger shaft 341, distance between sample air inlet 342 and asepwirator pump gas port 343 is slightly less than the length of absorption screen drum 332, makes absorption sieve mouth 372 and just can relatively with sample air inlet 342 be communicated with.Meanwhile, the adsorbent of mat insulation 333 to absorption screen drum 332 that can also be arranged in absorber top by outwarding winding is changed, and adsorbent type can be selected by detection demand.

According to an embodiment, the outer wall of resolving cylinder body 350 is also provided with temperature sensor (scheming not shown) and heat-insulation layer 354.The temperature of cylinder body resolved by temperature sensor for detecting, meanwhile, temperature sensor is connected with a controller, resolved the temperature in chamber 356, effectively can reduce power consumption by controller with the form control of temperature programming.Heat-insulation layer 351 adopts heat-preservation cotton, resolves cylinder body insulation, to reduce energy consumption for giving.Parsing cylinder body 350 is also provided with a carrier gas and shunts/purge interface 353, and carrier gas diffluence pass 353 is connected with parsing chamber 356, and when analytical instrument interface 352 cannot receive biased sample gas completely, biased sample gas is discharged from carrier gas shunting/blow valve port.Be provided with thermal insulating disc 360 between piston/cylinder 340 and parsing cylinder body 350, effectively can completely cut off the heat trnasfer of resolving cylinder body 350 and piston/cylinder 340.Piston/cylinder 340 and parsing cylinder body 350 adopt thread seal to be connected with between thermal insulating disc 360.Thermal insulating disc 360 adopts porous ceramic film material to make.

In order to obtain dry sample gas, drier bag 313 being set in ripple cooks a meal pipe 312, for removing the steam in mist, playing the effect of protection chromatographic column and detector.Drier bag 313 fixedly mounts by being arranged on draw-in groove 314 in corrugated flexible hose 312.Sampler 310 has a loudspeaker suction head 311, and loudspeaker suction head 311 is provided with micro-strainer 315.Micro-strainer 15 is being set, can preventing large particulate matter from entering and blocking pipeline.

According to an embodiment, each plunger shaft 341 is provided with a cooling gas port 344, and cooling gas port 344 is provided with inlet valve 374.Piston rod 331 is provided with cooling cavity 334, and cooling cavity 334 can be communicated with cooling gas port 344, and the sidewall of piston rod 331 is provided with and the multiple ventilation holes 373 cooling cavity 334 and be connected, and at least part of ventilation hole 373 can be communicated with asepwirator pump gas port.When needs cool absorber 330, pull-up absorber 330, makes cooling cavity 334 be connected with cooling gas port 344, open inlet valve 374, under the effect of asepwirator pump, cold gas flows into from cooling gas port 344, cools piston rod 331 and absorption screen drum 332.

According to an embodiment, between absorber 330 and plunger shaft 341, be provided with the sealing ring 335 of multiple O shape.

According to an embodiment, the inwall of resolving cylinder body 350 is provided with bushing pipe 355.Resolving cylinder body 350 can adopt stainless steel to make, the bushing pipe 355 that the polytetrafluoroethylmaterial material of resolving cylinder body 350 sealing embedding stable chemical nature is made, bushing pipe 355 can regularly replace, can ensure that sample gas does not contact with metal material on the one hand, react and the distortion of the detection sample caused thus and detection signal, also can stop that large particulate matter is fallen into chromatographic column and blocks chromatographic column on the other hand.

Preferably, a mat insulation 333 being set in the bottom of absorption screen drum 332, for the heat in isolated parsing chamber 356, avoiding the heat conduction in parsing chamber 356 to adsorbing in screen drum 332.Preferably, the bottom of absorption screen drum 332 is uncovered, and mat insulation 333 is threaded connection with absorption screen drum 332.Extract absorber 330 or back out piston/cylinder 340, and the mat insulation be positioned at bottom absorber 330 of outwarding winding can be changed adsorbent.User according to different testing goal selected adsorbent types (diameter of filling adsorbent should be greater than the mesh aperture adsorbing screen drum 332), can drastically increase the flexibility of instrument.The polytetrafluoro material that mat insulation can adopt heat-proof quality good, adsorbs screen drum 332 when mat insulation effectively can ensure absorber 330 Enrichment and adsorbent is near ambient, is conducive to sample adsorption and enrichment.

Preferably, piston rod 331 and the absorption screen drum 332 of the absorber 330 in the utility model are made into integration, and adopt the heat resistant type material of stable chemical nature to make, as polytetrafluoro.Piston/cylinder 340 can adopt large, the heat-resisting polytetrafluoro material that is good, stable chemical nature of intensity to make.In order to make absorber 330 stably move along plunger shaft 341, sealing guide rail is set, for sampling, enrichment, air-cooled, Thermal desorption sample introduction provide support and sealing pipeline in plunger shaft 341.

With reference to shown in Fig. 8, for convenience of description, in two absorbers, in figure, the absorber on the left side is the first absorber, is the second absorber with the absorber on the right in scheming.When sampling to checking matter, first the heating film of resolving outer wall of cylinder block is opened, set temperature, first two absorbers are all pressed in parsing chamber after temperature stabilization and carry out adsorbent purification, then by two absorber pull-ups, wherein the first absorber is pulled to absorber position, left side as shown in Figure 8, the position of being drawn high by the second absorber to absorption screen drum top a little less than piston/cylinder upper sample air inlet (does not form path of bleeding, contribute to absorber cooling and late-run sample absorption) simultaneously, open sampling asepwirator pump power supply, the loudspeaker sampling head of sampler is closely aimed at checking matter, start to collect checking matter escaping gas under the effect of asepwirator pump, continue to adopt 3-5 minute, to realize sample thief enrichment, after example enrichment, the absorption screen drum being arranged in the first absorber is all pressed and carry out sample precipitation into parsing chamber, meanwhile the second absorber is drawn high again until sample air inlet, absorption screen drum forms with asepwirator pump gas port the position being communicated with gas circuit, cycling like this is full-time with what realize when having multiple checking matter, quick sample is collected and enrichment is resolved.Enter sample outlet after the test sample be precipitated and the rapid Homogeneous phase mixing of carrier gas entered from carrier gas inlet, achieve the parsing sample introduction of sample, sample outlet is connected with checkout equipment or separation equipment.

Fig. 9 is the general structure schematic diagram of an embodiment of analyzing device 400 according to the utility model checkout equipment.Analyzing device 400 can comprise Sample introduction device section and ion mobility spectrometry analytical equipment part substantially.

Sample introduction device comprises bundling capillary pipe post 401, and bundling capillary pipe post 401 comprises multiple capillary column.In one embodiment, bundling capillary pipe post 401 can by by many independently single capillary post be agglomerated into a branch of formation abreast.In one embodiment, bundling capillary pipe post 401 can be formed by forming multiple parallel pore on a pillar.In one embodiment, bundling capillary pipe post 401 is formed by nonmetallic materials.Such as, normal conditions, capillary column can be formed by glass material.Capillary column also can be formed by other materials.Bundling capillary pipe post 401 is configured to have concordant arrival end and the port of export substantially.A bundling capillary pipe is made up of hundreds and thousands of parallel capillary tubing strings, and it is in orthohexagonal glass column that such as 500-5000 root parallel capillary tubing string is integrated in a cross section, and the internal diameter of every capillary post is 20-100 μm, be generally ~ 40 μm.Can apply one deck Stationary liquid at the inner surface of every capillary post, the selection of Stationary liquid can be selected as required.Due to the separating power that bundling capillary pipe post 401 is powerful, the function that namely the shorter form of a stroke or a combination of strokes post (40-250mm) of size can realize being separated usually can be made.The post of longer dimension can be coiled into disc.Biased sample component is through realizing being separated of material from the interaction between capillary Stationary liquid so that retention time is different.The retention time of capillary column second-minute magnitude (being generally tens seconds ~ a few minutes, minimum peak width several seconds).

The structure tool of bundling capillary pipe post 401 has the following advantages: 1) gather thousands of capillary post, makes the capacity of bundling capillary pipe post 401 larger, can be used for obtaining higher sensitivity; 2) capillary column thinner of bundling capillary pipe post 401, such as capillary column can have internal diameter 20-100 μm, and traditional capillary column internal diameter is between 0.25-0.53mm, thus the capillary column of bundling capillary pipe post 401 has better separating effect, can realize well being separated by shorter size; 3) the bundling capillary pipe post 401 (40-250mm) of the form of a stroke or a combination of strokes allows the barometric gradient passed through less than conventional capillaries post (general 30m), therefore the flow velocity in bundling capillary pipe post 401 is 2-3 magnitude of conventional capillary column flow rate, and there is higher range of flow (20-150ml/min), therefore bundling capillary pipe post 401 not only allows quick separating, and allows isothermal to be separated.Can realize bundling capillary pipe post 401-ion mobility spectrometry coupling spectrometer on the one hand based on these advantages and be similar to the ability being separated in real time and detecting, the size that bundling capillary pipe is short and small on the other hand helps to realize portable bundling capillary pipe post-ionic migration spectrometer.

In order to the protection of reinforced glass post, improve bundling capillary pipe post bulk strength, prevent unexpected fragmentation, Sample introduction device also comprises and is configured to surround and protects the round metal of bundling capillary pipe post 401 to overlap 420.In Fig. 9 of the present utility model, illustrated that regular hexagon glass column periphery is coupled the situation of round metal cover 420, namely the transversal of form of a stroke or a combination of strokes glass bundling capillary pipe post 401 is regular hexagon.The cross section of other shapes of bundling capillary pipe post 401 is also fine, such as circle.

Sample introduction device also comprises temperature control system, and temperature control system is combined the temperature for controlling in boundling capillary column 401 with bundling capillary pipe post 401.

Particularly, the temperature control system of Sample introduction device comprises heat carrier 402, and heat carrier 402 is configured to the round metal cover 420 that boundling capillary column 401 is surrounded in directly contact.Temperature control system also comprises at least one heater 404 and at least one transducer 405 of being embedded in heat carrier 402.The cooperation of at least one heater 404 and at least one transducer 405 can realize controlling the temperature of heat carrier 402.Heater can select various ways.Such as, many heating rods 404 can be embedded in heat carrier 402, such as, embed 1 or many heating rods 404, such as 2,3,4,5,6,7,8,9,10 or more root heating rods 404.Many heating rods 404 can be evenly distributed in heat carrier 402 so that more rapidly and raise the temperature of heat carrier 402 equably.Fig. 9 illustrates the situation of a heat conductive rod.Heat carrier 402 can embed heated filament, and the layout of heated filament is also conducive to uniform heating, such as, can make similar a kind of calandria heated up of heat carrier 402 itself.

In one embodiment, transducer 405 can be arranged near round metal cover 420, so that the temperature making transducer 405 survey is closer to the temperature in capillary column.Multiple transducer 405 can be evenly distributed in around the close round metal cover 420 of heat carrier 402.

In one embodiment, heat carrier 402 comprises on heat carrier 402 periphery multiple protruding 430, between multiple protruding 430 of heat carrier 402 periphery, form space 403.These spaces can regard groove 403 as, also can regard the passage 403 that fluid passes through as, as shown in Figure 10.

Each size of protruding 430 can be identical, also can be different.Spacing between single protruding 430 can be identical, also can be different.Such as a part of protruding 430 sizes are large, and other projection 430 size is little.Such as protruding 430 1 groups of two row, the spacing between two projections that the gap ratio often between group protruding 430 is often organized is large.The layout of protruding 430 also can be uneven.Even if this area personnel it should be understood that the layout comprising protruding other sizes of 430 and the projection 430 of spacing is also fine.

In other words, heat carrier 402 can regard two parts as, and a part is the base portion of heat carrier 402, and another part is the projection 430 of heat carrier 402.In one embodiment, the radial thickness of base portion can be less, and the height of protruding 430 can be larger.On heat carrier 402 multiple protruding 430 be conducive to fluid flow between protruding 430 with heat carrier 402 exchanged heat.In one embodiment, such as, pass into gas and gas is flowed between multiple protruding 430, can accelerate heat carrier 402 multiple protruding 430 exchange with the air heat passed into, and now multiple protruding 430 can be used as fin.In one embodiment, can winding pipeline between multiple protruding 430, can fluid be flow through in pipeline, the pipeline of fluid can be realized by high temperature fluid or cryogen and heat carrier 402 carries out heat exchange, thus control the temperature of heat carrier 402.

In one embodiment, the base thickness of heat carrier 402 is thinner, arranges heating film, can realize the intensification of heat carrier 402 thus between multiple protruding 430; Meanwhile, between multiple protruding 430, arrange that the pipeline of heating agent fluid realizes the cooling via heat trnasfer.Configure thus, combined sensor 405 promptly can control the temperature of heat carrier 402.

Due to multiple setting of protruding 430, heat carrier 402 can be regarded as and there is heating agent fluid for holding flowing or heating agent fluid line so that the groove that transmits of temperature.Particularly, Figure 12 illustrates that fluid line is wrapped in the situation between multiple protruding 430.Heating agent fluid line can wind through multiple protruding 430, or heating agent fluid line can spirally around heat carrier 402 multiple protruding 430 between, carry out heat trnasfer between heating agent fluid line and heat carrier 402 thus.Should be appreciated that, can be arranged in by fluid line by among multiple protruding 430 passages formed or raceway groove by any way, protruding 430 now not only carry out heat exchange with heating agent pipeline, also play the effect of supporting pipeline.

In one embodiment, multiple protruding 430 is favourable, and multiple protruding 430 can regard heat radiation protruding 430 as, directly dispel the heat with fluid; Multiple protruding 430 may be used for limiting the layout of fluid passage, by fluid passage around between multiple projection, can fix the position of fluid passage.

In another embodiment of the present utility model, Sample introduction device can also comprise shell 406, and shell 406 surrounds temperature control system.In one embodiment, Sample introduction device can also comprise heat-insulation layer 408, and heat-insulation layer 408 is arranged between shell 406 and heat carrier 402.In one embodiment, shell 406 can surround the lateral surface of heat carrier 402 in a sealing manner.When heat-insulation layer 408 and shell 406 surround heat carrier 402, the multiple projections on heat carrier 402 can in order to support heat-insulation layer 408 and shell 406.As shown in Figure 9, between multiple projection and heat-insulation layer 408, many passages are defined.The pipeline of heating agent fluid can through these passages or said groove and be arranged on the periphery of heat carrier 402, to carry out sufficient heat trnasfer above.

In one embodiment, can arrange air pump 418, be passed in above-mentioned groove 403 by pipeline 417, air pump 418 passes into gas-pressurized and enters groove 403 between multiple protruding 430, helps cooling or the intensification of heat carrier 402.In one embodiment, directly liquid can be passed into and realize heat exchange by multiple protruding 430 grooves formed.

In one embodiment, the arrival end of bundling capillary pipe post 401 reaches outside the shell 406 of Sample introduction device.A part for round metal cover 420 also can reach outside shell 406 along with bundling capillary pipe post 401 together.

Due to fast than conventional gas phase chromatographic column of the sample flow rate in bundling capillary pipe post 401, therefore the interface of Sample introduction device and ion mobility spectrometry analytical equipment is particularly important.The effect of the interface of Sample introduction device and ion mobility spectrometry analytical equipment is by the sample nondestructive of bundling capillary pipe post 401 quick separating ground, introduces reposefully in the reaction zone of ion mobility spectrometry analytical equipment.

In one embodiment, analyzing device 400 also comprises heat insulation positioner 411, be configured to connect Sample introduction device and ion mobility spectrometry analytical equipment between Sample introduction device and ion mobility spectrometry analytical equipment, and the heat trnasfer cut off between Sample introduction device and ion mobility spectrometry analytical equipment, so that point other independent temperature of Sample introduction device and ion mobility spectrometry analytical equipment controls.

In one embodiment, heat insulation positioner 411 comprises the first link be connected with the port of export of Sample introduction device and the second link be connected with the Sample introduction mouth of ion mobility spectrometry analytical equipment.Particularly, the first link connects and is sealed in an end of bundling capillary pipe post 401, the shape complementarity of the opening in the shape of the second link and the chamber of Ion transfer analytical equipment.The shape of heat insulation positioner 411 is as shown in the sectional view of Fig. 9 and Figure 11.Heat insulation positioner 411 has stair-stepping shape, and Figure 11 illustrates the sectional view along B-B and C-C line respectively.In one embodiment, the outer surface of the part of heat insulation positioner 411 can arrange packing ring.Packing ring 413 can play sealing function, when Sample introduction device inserts ion mobility spectrometry analytical equipment, heat insulation positioner 411 is connected between the two, and good sealing is necessary, and entering reaction zone 414 to avoid the leakage of the particle in reaction zone 414 or ambient atmos affects the precision measured.

Heat insulation positioner 411 can be formed by plastic material, and such as, by PEEK, polytetrafluoroethylene is formed.Heat insulation positioner 411 is by can other high temperature resistant and adiabatic nonmetallic materials be formed.Such as the material such as refractory material and asbestos is formed.By heat insulation positioner 411, the port of export of the bundling capillary pipe post 401 that nonmetallic materials are formed directly inserts in the chamber of ion mobility spectrometry analytical equipment by the Sample introduction mouth of ion mobility spectrometry analytical equipment, in the reaction zone 414 of i.e. ion mobility spectrometry analytical equipment, avoid round metal to overlap 420 near the ion district of ion mobility spectrometry analytical equipment simultaneously, thus avoid round metal to overlap the precision of 420 interfering ion migration analysis of spectrum devices.Particularly, round metal cover 420 does not enter the Sample introduction mouth of ion mobility spectrometry analytical equipment.Preferably, round metal cover 420 is away from the Sample introduction mouth of ion mobility spectrometry analytical equipment.

By such configuration, samples can directly be sent in the reaction zone 414 of ion mobility spectrometry analytical equipment, avoids gaseous matter in prior art to be introduced in the problem being broken into fragment ion in ionized region 415 by (such as) high-energy ray.Meanwhile, gaseous matter can be separated by capillary column, meets the requirement analyzed, is directly admitted to reaction zone 414 and analyzes.

In one embodiment, heat insulation positioner 411 can be formed as a whole with Sample introduction device, and this is also favourable when reality uses.In the case, heat insulation positioner 411 can one end of sealed sample gatherer, and the port of export of Sample introduction device stretches out from heat insulation positioner 411, as shown in Figure 9.Now, comprise the port of export of the Sample introduction device of heat insulation positioner 411 as shown in Figure 9, namely wrap up bundling capillary pipe post 401 by the end of heat insulation positioner 411, wherein the part of capillary column is directly wrapped up by the nonmetallic materials of heat insulation positioner 411.

Due to the setting of heat insulation positioner 411, the chamber that Sample introduction device is directly inserted into ion mobility spectrometry analytical equipment easily can be realized, namely in reaction zone 414.This is particularly important under the occasion requiring rapid analysis gaseous sample.Sample introduction device can carry out temperature control separately, can the temperature of Quality control gatherer separately in readiness time, under possessing the temperature conditions wanted, Sample introduction device is inserted ion mobility spectrometry analytical equipment at Sample introduction device; Connected by heat insulation positioner 411 and determine the relative position between Sample introduction device and ion mobility spectrometry analytical equipment.Due to thermal insulation properties and the rigidity of heat insulation positioner 411, the temperature of Sample introduction device can not affect the measurement of ion mobility spectrometry analytical equipment accurately, and the position relationship between Sample introduction device and ion mobility spectrometry analytical equipment can be determined.By such configuration, the connection can carrying out Sample introduction device and ion mobility spectrometry analytical equipment easily be separated, this has positive meaning in actual inspection process, greatly conveniently checks different samples, and and in transport, the volume of overall check system reduces.Such as, multiple Sample introduction device can be equipped with, the sample that convenient inspection is different, accelerate speed and the accuracy of inspection.

In one embodiment, the length of the round metal cover 420 of bundling capillary pipe post 401 is configured to round metal when in the chamber 414 that bundling capillary pipe post 401 is inserted into ion mobility spectrometry analytical equipment and overlaps the ionized region 415 that 420 do not enter ion mobility spectrometry analytical equipment.The end of round metal cover 420 terminates in heat insulation positioner 411, such as position as shown in Figure 9.The position that However, it should be understood that round metal cover 420 can be other situations, as long as round metal cover 420 keeps off the reaction zone 414 comprising ion.Such as, round metal cover 420 does not enter, or away from the Sample introduction mouth of ion mobility spectrometry analytical equipment.

In one embodiment, analyzing device 400 comprises the ion mobility spectrometry analytical equipment of the sample imported for analytic sample gatherer.Ion mobility spectrometry analytical equipment comprises the chamber 414 for gas reaction.Chamber 414 comprises Sample introduction mouth, in order to import sample to be analyzed.Ion mobility spectrometry analytical equipment also comprises ionized region 415.

As shown in Figure 9, Sample introduction device is positioned at the upside of ion mobility spectrometry analytical equipment, and the position of ionized region 415 is in downside.According to an embodiment of the present utility model, the ionized region 415 of Sample introduction device and ion mobility spectrometry analytical equipment relatively arranges it is favourable.To pass into the technical thought that ionized region 415 ionizes different from samples in prior art, Sample introduction device of the present utility model is arranged so that ionized region 415 avoided by the sample that will analyze, the samples that will analyze directly is directed in reaction zone 414, This advantageously avoids the generation of molecular ion fragment, avoid prior art the other problems such as the such as sample brought in Sample introduction to ionized region 415 to be broken into pieces, such as, due to turbulent flow etc. that nonlinear gas passage brings.That is, while realizing quick separating samples, samples is introduced into ion mobility spectrometry analytical equipment reposefully.

In an embodiment of the present utility model, ion mobility spectrometry analytical equipment 412 is positive 422, negative 423 double mode migration tubes, reaction zone 414 is between holotype pipe 422 and negative mode pipe 423, ionized region 415 and reaction zone 414 arranged apart, and connected by closeable opening, as Fig. 9 illustrates a kind of layout.Such as, ionized region 415 is near reaction zone 414 side.

According to mentality of designing of the present utility model, in one embodiment, the carrier gas 416 of such as air is imported in ionized region 415, and carrier gas by ionization, generates charged carrier gas, such as H in ionized region 415 ⁺(H ₂o) _n, and O ₂ ^-(H ₂o) _n.Charged carrier gas is admitted in reaction zone, to be combined and to react, thus make sample molecule positively charged or negative electricity in this charged carrier gas with sample.Sample gas and carrier gas are mixed different by ionization from prior art by this.Such as, large biological molecule is combined with proton hydrate or hydration oxonium ion the molecule forming positively charged or negative electricity, instead of is ionized to molecular fragment.Holotype migration tube 422 and negative mode migration tube 423 include ion gate 424, migration area, suppressor 427 and Faraday plate 428.Migration area can be connected in series by a string stainless steel protection ring 425 and ceramic insulation ring 426 and form.The sample particle of positively charged detects in holotype migration tube, and electronegative sample particle detects in negative mode migration tube.

Particularly, the carrier gas 416 of ion mobility spectrometry analytical equipment is ionized and reaction of formation ion in ionized region 415, the carrier gas inlet of reactive ion ionized region 415 under the purging of the carrier gas 416 of ion mobility spectrometry analytical equipment enters reaction zone 414, meet with the sample be separated through bundling capillary pipe post 401 at reaction zone 414, there is close Galvanosorptive reaction, make sample molecule adsorption reaction ion and charging property, just, negative charging ion at migration tube just, just entering respectively under the impetus of negative electric field, negative transfer pipe 422, 423 is separated, and detected by the Faraday plate 428 at two ends.Some other design of ion mobility spectrometry analytical equipment 412 and principle can No. 200810119974.6th, application reference, the content of this patent application at this by reference to being incorporated to.

The simple operating process described according to checkout equipment of the present utility model below.

Checkout equipment can be arranged in the places such as such as airport, port, subway station, the sample inlet of sampling apparatus be aimed at the object of examine.The tornado air-flow of simulating in sampling apparatus produces negative pressure, sucks in wind guide chamber 109 by gaseous substance or particulate matter; Through semi-permeable membrane 111, sample mixes in mixed zone or hybrid chamber with carrier gas, is discharged by injection port 120.Before sample enters preliminary treatment sampling device, the temperature in the Thermal desorption chamber of preliminary treatment sampling device is maintained a suitable constant high temperature (such as, 80 DEG C ~ 300 DEG C), being pushed into fast by the piston type absorber being adsorbed with sample has in the Thermal desorption chamber of high temperature, the adsorbent be pushed in thermal desorption chamber is heated rapidly, in adsorbent chamber, the sample of absorption is at high temperature separated out instantaneously, the sample of separating out mixes with the carrier gas through preheating that the carrier gas inlet from Thermal desorption chamber is introduced, and is finally brought into analyzing device by carrier gas.Capillary column bundle in analyzing device, by sample separation, directly sends into ion mobility spectrometry analytical equipment subsequently.

Although some embodiments of this overall inventional idea have been shown and explanation, those skilled in the art will appreciate that, when not deviating from principle and the spirit of this overall inventional idea, can make a change these embodiments, scope of the present utility model is with claim and their equivalents.

Claims (47)

1. a checkout equipment, comprising:

Sampling apparatus, for gathering the sample that will be detected;

Preliminary treatment sampling device, is configured to the sample of preliminary treatment from sampling apparatus;

Analyzing device, for separating of from the sample after the pretreated sample of preliminary treatment sampling device and Analyze & separate.

2. checkout equipment according to claim 1, is characterized in that,

Sampling apparatus comprises: cavity, has the sample inlet of the suction sample of the first end being positioned at cavity and the sample export for discharging sample near second end relative with first end being positioned at cavity; Cavity also comprises inflation entrance and the exhaust outlet of the wall being positioned at cavity,

Wherein inflate entrance to be configured to be blown into air-flow in cavity, exhaust outlet is configured to Exhaust Gas, to form tornado air-flow together with inflation entrance in cavity, described tornado air-flow is along the spiral advance of first end to the second end from cavity.

3. checkout equipment according to claim 2, is characterized in that,

The inwall of part cavity is formed frusto-conical shape, and the small diameter circular end of frusto-conical internal wall is near the sample inlet of cavity, and the large-diameter circular end of frusto-conical internal wall is near sample export.

4. checkout equipment according to claim 3, is characterized in that,

Inflation entrance is arranged so that the inner surface in the axial admission direction and cavity inner wall of inflating entrance is close to tangent, and the axial admission direction of inflating entrance rolls tiltedly to sample export.

5. checkout equipment according to claim 2, is characterized in that,

Exhaust outlet is configured to the peripheral gas of discharging the tornado air-flow formed in cavity.

6. checkout equipment according to claim 5, is characterized in that,

The opening direction of exhaust outlet is close to velocity attitude reverse of the air-flow of exhaust ports.

7. checkout equipment according to claim 2, is characterized in that,

Sampling apparatus also comprises the hybrid chamber part of the second end being arranged on cavity, and sample is admitted to hybrid chamber part and sends into detection system by injection port.

8. checkout equipment according to claim 7, is characterized in that,

Hybrid chamber part is by pellicle and other spaced-apart of cavity.

9. checkout equipment according to claim 7, is characterized in that,

Hybrid chamber part arranges carrier gas passage to inject carrier gas so that and sample mix to hybrid chamber part.

10. checkout equipment according to claim 2, is characterized in that,

Sampling apparatus also comprises the screen pack being positioned at first end, and screen pack is for stopping that large particulate matter enters sample inlet, and described screen pack comprises the oarse-grained coarse strainer of the filtration with rigidity and filters the fie screen of microparticle.

11. checkout equipments according to claim 2, is characterized in that,

Sampling apparatus also comprises the temperature-controlling system for controlling cavity inner temperature, comprise be arranged in the wall of cavity for the heater that heats up and the temperature sensor for measuring tempeature.

12. checkout equipments according to claim 2, is characterized in that,

Sampling apparatus also comprises the heat-insulation layer of the wall surrounding cavity.

13. checkout equipments according to claim 2, is characterized in that,

Sampling apparatus also comprises the inflator pump be communicated with inflation entrance and the exhaust pump be communicated with exhaust outlet, and wherein exhaust pump flow velocity is 10 times or higher of inflator pump.

14. checkout equipments according to claim 1, is characterized in that,

Preliminary treatment sampling device comprises:

Piston type absorber, has the adsorbent chamber that can be communicated with sampling apparatus, and this adsorbent chamber is configured to adsorb the sample gathered by sampling apparatus;

Piston cylinder, is defined for and holds piston type absorber and the plunger shaft be communicated with adsorbent chamber;

Thermal desorption chamber, to be communicated with plunger shaft with adsorbent chamber and to be configured to Thermal desorption and be attracted to sample in adsorbent chamber; With

Pump, to be communicated with plunger shaft by conduit and to be configured to, by sample collection structure, the sample leaked in environmental gas is drawn into adsorbent chamber,

Wherein, piston type absorber is configured to resolve between position at sample collection location and sample move in plunger shaft, in sample collection location, adsorbent chamber to be positioned at outside Thermal desorption chamber and with sample collection fabric connectivity to adsorb the sample gathered by sample collection structure, resolves adsorbent chamber in position be positioned in Thermal desorption chamber and make adsorbed sample in Thermal desorption chamber by Thermal desorption at sample.

15. checkout equipments according to claim 14, wherein

Piston cylinder comprises the cylinder body be arranged on Thermal desorption chamber, cylinder body is provided with the sampling be communicated with plunger shaft and is connected valve, and one end of tube connector is configured to be connected in valve with being removably mounted on to sample hermetically.

16. checkout equipments according to claim 15, wherein

The drier for absorbing the moisture in gathered sample is placed with in tube connector.

17. checkout equipments according to claim 15, wherein

At least one part of tube connector comprises Telescopic flexible pipe.

18. checkout equipments according to any one of claim 14-17, wherein

Piston type absorber comprises the piston body of rod and is connected to the adsorbent chamber of end of the piston body of rod, and

Adsorbent chamber comprises the network structure that inside is filled with adsorbent.

19. checkout equipments according to claim 18, wherein

Adsorbent chamber comprises sorption channel, and this sorption channel is formed at when piston type absorber is arranged in sample collection location and is communicated with to receive the sample gathered with sampling apparatus.

20. checkout equipments according to claim 18, wherein

Piston type absorber also comprises the heat insulating mattress of the one end away from the piston body of rod being removably connected to adsorbent chamber.

21. checkout equipments according to claim 18, wherein

The piston body of rod comprises cooling duct and is formed in the multiple through holes in the bottom of the piston body of rod,

Cooling duct is formed at when piston type absorber is arranged in sample collection location and is directly communicated with environmental gas, and is communicated with environmental gas by the cooling through hole being formed in piston cylinder when piston type absorber is arranged in sample parsing position, and

Described multiple through hole is configured to be communicated with plunger shaft with cooling duct.

22. checkout equipments according to claim 18, also comprise multiple sealing ring, around piston type absorber, described multiple sealing ring is arranged so that piston type absorber can be contained in piston cylinder hermetically.

23. checkout equipments according to any one of claim 14-17, wherein

Piston cylinder comprises and being arranged in Thermal desorption chamber to guide the guide rail of the motion of piston type absorber in Thermal desorption chamber.

24. checkout equipments according to any one of claim 14-17, wherein

Thermal desorption chamber comprises cavity and is arranged on the bushing pipe in the inwall of cavity, and

The outer wall of cavity is coated with heating arrangement.

25. checkout equipments according to claim 24, wherein Thermal desorption chamber is also provided with carrier gas inlet, gas outlet and analytical instrument interface.

26. checkout equipments according to any one of claim 14-17, also comprise the heat insulation structural be arranged between piston cylinder and Thermal desorption chamber.

27. checkout equipments according to claim 1, it is characterized in that, preliminary treatment sampling device comprises: asepwirator pump, absorber, piston/cylinder and parsing cylinder body, described parsing cylinder body has parsing chamber, described parsing cylinder body is provided with and exports with described parsing chamber communication with carrier gas entrance, carrier gas purge/shunting and the interface of linking parsing instrument, and the outer wall of described parsing cylinder body is provided with heating film and temperature sensor; Described piston/cylinder is provided with two plunger shaft, and each described plunger shaft installs a described absorber; Described piston/cylinder is arranged on described parsing cylinder body, and two described plunger shaft are all connected with described parsing chamber; Described piston/cylinder is provided with the sample air inlet and asepwirator pump gas port that are all communicated with two described plunger shaft, and described sample air inlet is connected with sampling apparatus, and described asepwirator pump gas port is connected with described asepwirator pump; Described absorber comprises the absorption screen drum and piston rod that are connected, and described absorption screen drum is used for depositing adsorbent; Described piston rod is slidably arranged in described plunger shaft, drive described absorption screen drum slide along described plunger shaft and can stretch in described parsing chamber, and described absorption screen drum can be communicated with simultaneously with asepwirator pump gas port with described sample air inlet.

28. checkout equipments as claimed in claim 27, it is characterized in that, the outer wall of described parsing cylinder body is also provided with temperature sensor and heat-insulation layer.

29. checkout equipments as claimed in claim 27, is characterized in that, described absorption screen drum is provided with an absorption sieve mouth, and described absorption sieve mouth can be communicated with described sample air inlet.

30. checkout equipments as claimed in claim 27, is characterized in that, each described plunger shaft is provided with a cooling gas port, and described cooling gas port is provided with inlet valve; Described piston rod is provided with cooling cavity, and described cooling cavity can be communicated with cooling gas port, and the sidewall of described piston rod is provided with and the ventilation hole cooling cavity and be connected, and described ventilation hole can be communicated with asepwirator pump gas port.

31. checkout equipments as claimed in claim 27, is characterized in that, the bottom of described absorption screen drum arranges a mat insulation.

32. checkout equipments as claimed in claim 27, is characterized in that, be provided with multiple sealing ring between described absorber and described plunger shaft.

33. checkout equipments as claimed in claim 27, it is characterized in that, the inwall of described parsing cylinder body is provided with bushing pipe.

34. checkout equipments as claimed in claim 27, is characterized in that, be provided with thermal insulating disc between described piston/cylinder and described parsing cylinder body.

35. checkout equipments as claimed in claim 27, it is characterized in that, described parsing cylinder body is also provided with a carrier gas purge/point stream interface.

36. checkout equipments according to claim 1, is characterized in that,

Analyzing device comprises Sample introduction device, and Sample introduction device comprises: bundling capillary pipe post, and the multiple capillary columns formed by nonmetallic materials are formed, and have arrival end and the port of export; With, temperature control system, is combined the temperature for controlling in boundling capillary column with bundling capillary pipe post;

Analyzing device also comprises ion mobility spectrometry analytical equipment, ion mobility spectrometry analytical equipment is used for the sample that analytic sample gatherer imports, described ion mobility spectrometry analytical equipment comprises the chamber for gas reaction, and chamber has the Sample introduction mouth for importing sample

Wherein, the port of export of the bundling capillary pipe post of nonmetallic materials formation is directly inserted in the chamber of ion mobility spectrometry analytical equipment by the Sample introduction mouth of ion mobility spectrometry analytical equipment.

37. checkout equipments according to claim 36, is characterized in that,

Analyzing device also comprises heat insulation positioner, be configured to connect Sample introduction device and ion mobility spectrometry analytical equipment between Sample introduction device and ion mobility spectrometry analytical equipment, and the heat trnasfer cut off between Sample introduction device and ion mobility spectrometry analytical equipment, so that point other independent temperature of Sample introduction device and ion mobility spectrometry analytical equipment controls.

38., according to checkout equipment according to claim 37, is characterized in that,

Heat insulation positioner comprises the first link be connected with the port of export of Sample introduction device and the second link be connected with ion mobility spectrometry analytical equipment, an end of the first link sealing bundling capillary pipe post, the shape complementarity of the opening in the shape of the second link and the chamber of Ion transfer analytical equipment.

39., according to checkout equipment according to claim 37, is characterized in that, heat insulation positioner is formed by high temperature resistant and plastic material that is excellent heat insulating performance.

40. checkout equipments according to claim 36, is characterized in that,

Sample introduction device also comprises and is configured to surround and protects the round metal cover of bundling capillary pipe post, and the length of the round metal cover of bundling capillary pipe post is configured to round metal when in the chamber that bundling capillary pipe post is inserted into ion mobility spectrometry analytical equipment and overlaps the Sample introduction mouth not entering ion mobility spectrometry analytical equipment.

41. checkout equipments according to claim 36, is characterized in that,

The temperature control system of Sample introduction device comprises heat carrier, and heat carrier is configured to directly contact and surrounds the round metal cover of boundling capillary column, and at least one heater be embedded in heat carrier and at least one transducer.

42. checkout equipments according to claim 41, is characterized in that,

Heat carrier comprises the multiple projections on heat carrier periphery, can be formed for arranging fluid passage or flowing through the space of fluid between multiple projection.

43. checkout equipments according to claim 41, is characterized in that,

The mode of the multiple projection of heating agent fluid line wind through or with spirally around the mode of heat carrier through multiple projection so that heat trnasfer between heating agent fluid line and heat carrier.

44. checkout equipments according to claim 36, is characterized in that,

Sample introduction device also comprises shell, and shell surrounds temperature control system.

45. checkout equipments according to claim 44, is characterized in that,

Sample introduction device also comprises heat-insulation layer, and heat-insulation layer is arranged between shell and heat carrier.

46. checkout equipments according to claim 44, is characterized in that,

Heat-insulation layer is by the multiple raised support on heat carrier.

47. checkout equipments according to claim 36, is characterized in that,

Ion mobility spectrometry analytical equipment is the positive and negative double mode transference tube comprising cation migration tube and anion migration tube, ion mobility spectrometry analytical equipment comprises ionized region, be configured to the carrier gas be passed into is ionized into reactive ion and reactive ion is sent into reaction zone, wherein ionized region be arranged on ion mobility spectrometry analytical equipment with the relative side of the port of export of bundling capillary pipe post.