CN107271707A - The sampling device of a kind of sampler and the use device, detecting system - Google Patents
The sampling device of a kind of sampler and the use device, detecting system Download PDFInfo
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- CN107271707A CN107271707A CN201710656767.3A CN201710656767A CN107271707A CN 107271707 A CN107271707 A CN 107271707A CN 201710656767 A CN201710656767 A CN 201710656767A CN 107271707 A CN107271707 A CN 107271707A
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- 238000005070 sampling Methods 0.000 title claims abstract description 240
- 239000000523 sample Substances 0.000 claims abstract description 321
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 16
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 8
- 229910052737 gold Inorganic materials 0.000 claims description 8
- 239000010931 gold Substances 0.000 claims description 8
- 229910052741 iridium Inorganic materials 0.000 claims description 8
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 8
- 229910052762 osmium Inorganic materials 0.000 claims description 8
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052763 palladium Inorganic materials 0.000 claims description 8
- 229910052697 platinum Inorganic materials 0.000 claims description 8
- 229910052703 rhodium Inorganic materials 0.000 claims description 8
- 239000010948 rhodium Substances 0.000 claims description 8
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052707 ruthenium Inorganic materials 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 230000002572 peristaltic effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 86
- 238000004140 cleaning Methods 0.000 abstract description 28
- 238000004445 quantitative analysis Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 37
- 238000000034 method Methods 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 10
- 239000002699 waste material Substances 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/0099—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor comprising robots or similar manipulators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
This application discloses a kind of sampler, including depression generator, pressure-detecting device, sampling probe, main line, control system, the depression generator is connected with the sampling probe by main line, and the depression generator is used to make to produce negative pressure inside sampler；The pressure-detecting device is arranged on the main line, for detecting pressure；The control system is connected with the depression generator, pressure-detecting device respectively, and the control system receives the data of the pressure-detecting device, and controls the operating of the depression generator.The application also provides the Autosampler for using above-mentioned sampler, detecting system.The sampler of the application, it is possible to achieve the liquid that accurate quantitative analysis is drawn during sampling, and ensure the sampling probe of sampler on the premise of it can be drawn to enough solution sample, contact liquor sample as few as possible is easy to the cleaning of sampling probe.
Description
Technical field
The application is related to detection device technical field, more particularly to a kind of sampler and the sample introduction dress using the device
Put, detecting system.
Background technology
Sampler is by the way that probe is extend into liquor sample storage device, after draw solution sample, shifted
Into another container, or it is put into detection in detection means.The liquor sample of absorption ormal weight is needed every time, in order to subsequent detection
And the progress of interpretation of result.Existing sampler generally realizes the solution to absorption using flowmeter, optical detection apparatus etc.
Quantifying for sample, it is complicated.
The sampling probe of sampler is stretched into after solution, and meeting attachment portion liquor sample, next drawing on sampling pinhead wall
Before individual sample, in order to prevent pollution, it is necessary to be cleaned to sample pin, the operating time is long, operating efficiency is relatively low.
The content of the invention
In order to solve the above technical problems, first purpose of the present invention is a kind of sampler of offer, of the invention second
Individual purpose is provides a kind of Autosampler using above-mentioned sampler, and third object of the present invention uses to provide one kind
The detecting system of above-mentioned sampler.The sampler of the present invention, it is possible to achieve the liquid that accurate quantitative analysis is drawn during sampling, and
Ensure the sampling probe of sampler on the premise of it can be drawn to enough solution sample, contact liquor sample as few as possible,
It is easy to the cleaning of sampling probe.
The technical scheme that the present invention is provided is as follows：
A kind of sampler, including depression generator, pressure-detecting device, sampling probe, main line, control system, institute
State depression generator with the sampling probe by main line to be connected, the depression generator is used to make inside sampler
Produce negative pressure；The pressure-detecting device is arranged on the main line, for detecting pressure；The control system respectively with institute
State depression generator, pressure-detecting device to be connected, the control system receives the data of the pressure-detecting device, and controls
The operating of the depression generator.
Preferably, it is additionally provided with triple valve on the main line, the triple valve includes public port, normally opened port, normally closed
Port, the public port is arranged on the main line close to one end of the depression generator, and the normally opened port is set
In the main line close to one end of the sampling probe, the normally closed port is connected with outside air, the control system and institute
State triple valve to be connected, control the opening and closing of triple valve.
Preferably, the main line be provided with threeway, the threeway be respectively communicated with the sampling probe, depression generator,
Outside air；The main line is provided with two-way valve with outside air connectivity part, and the control system is connected with the two-way valve, controls
The opening and closing of two-way valve processed.
Preferably, air pump, bypass line are additionally provided with, the air pump is normally closed by bypass line and the triple valve
Port or the two-way valve are connected, and the control system is connected with the air pump, control the operating of air pump.
Preferably, the cavity volume of the sampling probe is more than or equal to the volume of samples taken.
Preferably, the sampling probe is by ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, titanium metal material, or containing ruthenium, rhodium, palladium,
It is prepared by the alloy material of any one or more in silver, osmium, iridium, platinum, gold, titanium.
Preferably, the sampling probe is provided with plating fluorine layer.
Preferably, the depression generator is any one in plunger pump, piston pump, membrane pump, peristaltic pump, vavuum pump
Kind.
A kind of sampling device, including mechanical arm, the sampler that is connected with mechanical arm that can be moved in certain space, institute
Sampler is stated for above-mentioned sampler.
A kind of detecting system, including above-mentioned sampler, with the analytical instrument tested sample.
The sampler of the present invention, depression generator is connected with sampling probe by main line, and pressure-detecting device is set
Put on main line, the pressure value in main line is detected.Control system is filled with depression generator, pressure detecting respectively
Put connected, control system receives the data of pressure-detecting device detection, and controls the operating of depression generator.
When being sampled using the sampler of the present invention, control sampling probe is stretched into below sample liquid level, depression generator fortune
Change the line of production raw negative pressure, now the pressure in depression generator, sampling probe, main line composition system is less than extraneous pressure, then sample
Product are pressed into sampling probe under extraneous pressure effect.Pressure-detecting device persistently detects the pressure in main line in the process
Force value, the pressure value of pressure-detecting device detection is related to the vertical height of the liquid absorbed in sampling probe, then can pass through pressure
The pressure value that force checking device is detected calculates the liquid level in sampling probe, with reference to the parameters such as the internal diameter of sampling probe, Ke Yiji
Calculate the volume of the liquid absorbed in sampling probe.When using micro-pressure sensor such as pressure-detecting device, when the sampling probe used
When cavity volume is more than or equal to the volume of samples taken, the vertical height of the liquid that sampling probe is drawn and micro-pressure sensor
Magnitude of voltage (negative pressure value) is directly proportional.When needs precisely measure the liquid bigger than sampling probe cavity volume, it is necessary to which nominal pressure is passed
Corresponding relation between sensor pressure and taken liquid.
A kind of detection project, detect each time needed for sample volume be typically it is certain, then can be by setting pressure limit
The parameters such as value, realize the quantitative absorption to sample.According to the volume of required sample, and sampling probe the parameter such as internal diameter, pass through meter
The methods such as calculation, actual test, determine the relation between the pressure value of sample volume and pressure-detecting device detection, and by a certain inspection
The corresponding design of pressure of sample volume needed for survey project is limit value.When then being sampled using the sampler, sampling probe is stretched into
Under sample liquid level, control system control depression generator operating produces negative pressure, and sample is inhaled into sampling probe, during this
Pressure-detecting device persistently detects the pressure value changes in main line, and data feedback will be detected to control system.When pressure inspection
When the pressure value for surveying device detection reaches the limit value set in control system, control system control depression generator stops fortune
Turn, the sample volume now drawn in sampling probe is a certain amount of volume corresponding to the pressure limit, realize quantitative draw
The function of liquid.
The sampler of the present invention, can according to needed for different detection projects sample volume difference, different limits are set
Value, is controlled to draw the sample of different volumes by control system.Meanwhile, according to the difference of the parameters such as the internal diameter of sampling probe, using not
During the sampling probe of same model, the pressure value corresponding to the sample of a certain amount of volume is also different, can be in control system to different shaped
Number sampling probe sets different limit values, reaches the purpose that adaptation different model sampling probe is sampled.Then sampling of the invention is filled
Put, can change set pressure limit according to model, the amount of the sample volume of required absorption of sampling probe, or set respectively
Multiple pressure limits are corresponding, so as to realize the effect for being adapted to different sampling probes, adapting to different sample volume demands.
Using the sampler of the present invention, it can also realize that the depth stretched into sampling probe below liquid level is controlled.Take
The position of sample pin and liquid level should ensure that sampling probe can get sample, in order to avoid suction；Ensure contact of the sampling probe with liquid level again
Area is tried one's best less, in order to avoid the liquid of sampling probe surfaces externally and internally attachment causes cross pollution, or brings error.Use taking for the present invention
It is that sampling probe is stretched into below liquid level first when sampling device is sampled, now controls depression generator inoperative, then in main line
Pressure value changes, the then pressure value that can by pressure-detecting device be detected related to the depth that sampling probe is stretched into below liquid level, meter
Calculate the depth that sampling probe is stretched into below liquid level.When using micro-pressure sensor such as pressure-detecting device, sampling probe is stretched into below liquid level
Depth and the magnitude of voltage of micro-pressure sensor be inversely proportional.
The process that sampling probe is stretched into below liquid, the pressure value of control system real-time collecting pressure-detecting device detection, and
Compared with the limit value of setting, when the pressure value of detection is above or below setup pressure value, the depth of sampling probe has been represented
Setting value is reached, control system control sampling probe stops continuing moving under liquid level.
If sampling probe has moved to mechanical arm maximum position, the pressure value that pressure-detecting device is collected still can not
Reach setup pressure value, then control system judges to be sampled deficiency.Or sampling probe is deep into and is sampled behind fixed position, bear
Press in extraction process, the pressure value of pressure-detecting device can not reach setting value, then control system can also judge to be taken
Sample is not enough or pipeline gas leakage.
When sampling probe stretches into the depth of below liquid level, reach and draw the requirement of a certain amount of volume sample (i.e. sampling probe is stretched into
Depth below liquid level reaches the minimum-depth for drawing a certain amount of sample) when, control sampling probe does not continue to insertion, it is ensured that
The contact liq of sampling probe minimum-depth, is easy to the cleaning of sampling probe.
The depth that sampling probe is stretched into below liquid level reaches the pressure value corresponding to the minimum-depth for drawing a certain amount of sample
Limit value is set to, then when being sampled using the sampler, during sampling probe is stretched under sample liquid level, pressure-detecting device is held
Pressure value changes in continuous detection main line, and data feedback will be detected to control system.The pressure detected when pressure-detecting device
When force value reaches the limit value set in control system, the depth that now sampling probe is stretched into below liquid level is to draw a certain amount of sample institute
The minimum-depth needed, control system control stops stretching into for sampling probe, and sampling probe stops insertion, so as to ensure that sampling probe is minimum
The contact liq of degree, is easy to the cleaning of sampling probe.
Because the depth that sampling probe is stretched into below liquid level is relevant with pressure value, then the volume of the sample itself in container is to taking
The sampling process of sample pin will not produce interference.When the sample in container is more or relatively expires, sampling probe stretches into the depth of vessel port
It is shallower；And when the sample in container is less, the depth that sampling probe stretches into vessel port is deeper, but no matter sample in container it is many or
Few, when drawing the sample of certain volume, the depth that sampling probe stretches into sample liquid level is identical.By using the sampling of the present invention
Device, the depth stretched into sampling probe below liquid level is controlled, and can avoid the sampling probe occurred when sample is more in container
It is fully inserted into, even main line stretches into the problems such as cleaning brought in sample is difficult；Meanwhile, when sample is less in container,
The sample volume for the absorption that the depth that sampling probe can be avoided to stretch into below liquid level is not enough brought does not reach the problem of detection is required.
During using sampler of the invention, common operation is to keep depression generator to be closed first,
Sampling probe is extend into below sample liquid level, pressure value is now detected by pressure-detecting device and control system is fed back to, controlled
The depth that system processed is stretched into sampling probe below sample liquid level is controlled.After sampling probe reaches set depth, stop sampling
Pin is stretched into, and is opened depression generator and produced negative pressure, and pipette samples liquid enters sampling probe, and now pressure-detecting device is examined
The pressure value of survey feeds back to control system, the volume for controlling drawn sample.When reaching the volume of setting, control system
System control depression generator shuts down, and the volume that now sampling probe is drawn is the sample needed for a certain detection project
Determined volume.
The sampler of the present invention, the mechanical arm that can coordinate can move in certain space uses, realize automatic sampling,
Auto injection.Using the sampling device with mechanical arm, coordinate the detecting system of analytical instrument composition, it is possible to achieve analysis detection
The automation of process.
The sampler of the present invention, also can coordinate other sampling devices, analysis and detection device to use, play quantitative liquid draw
The effect of body, and the contact sample of sampling probe minimum degree can be controlled, it is easy to the cleaning of sampling probe.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the connection diagram (triple valve scheme) of sampler in the embodiment of the present invention；
Fig. 2 is the connection diagram (threeway and two-way valve scheme) of sampler in the embodiment of the present invention；
Fig. 3 is the structural representation (being connected with mechanical arm) of sampler in the embodiment of the present invention；
Fig. 4 is the control unit connection diagram of sampler in the embodiment of the present invention；
Reference：1- depression generators；2- pressure-detecting devices；3- sampling probes；4- main lines；5- control systems；
6- triple valves；601- public ports；The normally opened ports of 602-；The normally closed ports of 603-；7- air pumps；8- bypass lines；9- two-way valves；
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
Please as shown in Figures 1 to 4, the embodiment of the present invention provides a kind of sampler, including depression generator 1, pressure
Detection means 2, sampling probe 3, main line 4, control system 5, the depression generator 1 pass through main line 4 with the sampling probe 3
It is connected, the depression generator 1 is used to make to produce negative pressure inside sampler；The pressure-detecting device 2 is arranged on institute
State on main line 4, for detecting pressure；The control system 5 respectively with the depression generator 1, the phase of pressure-detecting device 2
Even, the control system 5 receives the data of the pressure-detecting device 2, and controls the operating of the depression generator 1.
The sampler of the present invention, depression generator 1 is connected with sampling probe 3 by main line 4, pressure-detecting device
2 are arranged on main line 4, and the pressure value in main line 4 is detected.Control system 5 respectively with depression generator 1, pressure
Force checking device 2 is connected, and control system 5 receives the data that pressure-detecting device 2 is detected, and controls the fortune of depression generator 1
Turn.
When being sampled using the sampler of the present invention, control sampling probe 3 is stretched into below sample liquid level, depression generator 1
Operating produces negative pressure, and now the pressure in depression generator 1, sampling probe 3, the composition system of main line 4 is less than extraneous pressure,
Then sample is pressed into sampling probe 3 under extraneous pressure effect.Pressure-detecting device 2 persistently detects main line in the process
Pressure value in 4, the pressure value that pressure-detecting device 2 is detected is related to the vertical height of the liquid absorbed in sampling probe 3,
The pressure value that can be then detected by pressure-detecting device 2 calculates the liquid level in sampling probe 3, with reference to the internal diameter of sampling probe 3
Etc. parameter, the volume of the liquid absorbed in sampling probe 3 can be calculated.During such as pressure-detecting device 2 using micro-pressure sensor, when
When the cavity volume of the sampling probe 3 used is more than or equal to the volume of samples taken, the vertical height for the liquid that sampling probe 3 is drawn
Degree is directly proportional to the magnitude of voltage (negative pressure value) of micro-pressure sensor.When need precisely measure the liquid bigger than the cavity volume of sampling probe 3,
It is accomplished by the corresponding relation between nominal pressure cell pressure and taken liquid.
A kind of detection project, detect each time needed for sample volume be typically it is certain, then can be by setting pressure limit
The parameters such as value, realize the quantitative absorption to sample.According to the volume of required sample, and sampling probe 3 the parameter such as internal diameter, pass through meter
The methods such as calculation, actual test, determine the relation between the pressure value that sample volume and pressure-detecting device 2 are detected, and will be a certain
The corresponding design of pressure of sample volume needed for detection project is limit value.When then being sampled using the sampler, sampling probe 3 is stretched
Enter under sample liquid level, the control operating of depression generator 1 of control system 5 produces negative pressure, and sample is inhaled into sampling probe 3, this
During pressure-detecting device 2 persistently detect pressure value changes in main line 4, and will detection data feedback to control system 5.
When the pressure value that pressure-detecting device 2 is detected reaches the limit value set in control system 5, control system 5 controls negative pressure
Device 1 shuts down, and the sample volume now drawn in sampling probe 3 is a certain amount of volume corresponding to the pressure limit,
Realize the function of quantitatively drawing liquid.
The sampler of the present invention, can according to needed for different detection projects sample volume difference, different limits are set
Value, is controlled to draw the sample of different volumes by control system 5.Meanwhile, according to the difference of the parameters such as the internal diameter of sampling probe 3, use
During the sampling probe 3 of different model, the pressure value corresponding to the sample of a certain amount of volume is also different, can be in control system 5 to not
Same model sampling probe 3 sets different limit values, reaches the purpose that adaptation different model sampling probe 3 is sampled.It is then of the invention
Sampler, can change set pressure limit according to model, the amount of the sample volume of required absorption of sampling probe 3, or
Set multiple pressure limits corresponding respectively, so as to realize the effect for being adapted to different sampling probes, adapting to different sample volume demands
Really.
Using the sampler of the present invention, it can also realize that the depth stretched into sampling probe 3 below liquid level is controlled.Take
The position of sample pin 3 and liquid level should ensure that sampling probe 3 can get sample, in order to avoid suction；Ensure connecing for sampling probe 3 and liquid level again
Contacting surface product is as far as possible few, in order to avoid the liquid of the surfaces externally and internally of sampling probe 3 attachment causes cross pollution, or brings error.Use the present invention
Sampler sampling when, be that sampling probe 3 is stretched into below liquid level first, now control depression generator 1 it is inoperative, then be responsible for
Pressure value changes in road 4, it is related to the depth that sampling probe 3 is stretched into below liquid level, then it can be detected by pressure-detecting device 2
Pressure value, calculates the depth that sampling probe 3 is stretched into below liquid level.During such as pressure-detecting device 2 using micro-pressure sensor, sampling probe 3
The depth and the magnitude of voltage of micro-pressure sensor stretched into below liquid level is inversely proportional.
The process that sampling probe 3 is stretched into below liquid, the pressure value of the real-time collecting pressure-detecting device 2 of control system 5 detection,
And compared with the limit value of setting, when the pressure value of detection is above or below setup pressure value, represented the depth of sampling probe 3
Through reaching setting value, the control sampling probe 3 of control system 5 stops continuing moving under liquid level.
If sampling probe 3 has moved to mechanical arm maximum position, the pressure value that pressure-detecting device 2 is collected is still not
Setup pressure value can be reached, then control system 5 judges to be sampled deficiency.Or sampling probe 3 is deep into and is sampled fixed position
Afterwards, during negative pressure extracting, the pressure value of pressure-detecting device 2 can not reach setting value, then control system 5 can also be sentenced
Surely it is sampled not enough or pipeline gas leakage.
When sampling probe 3 stretches into the depth of below liquid level, reach and draw the requirement of a certain amount of volume sample (i.e. sampling probe 3 is stretched
Enter the depth below liquid level and reach the minimum-depth for drawing a certain amount of sample) when, control sampling probe 3 does not continue to insertion, can be with
Ensure the contact liq of the minimum-depth of sampling probe 3, be easy to the cleaning of sampling probe 3.
The depth that sampling probe 3 is stretched into below liquid level reaches the pressure value corresponding to the minimum-depth for drawing a certain amount of sample
Be set to limit value, then when being sampled using the sampler, during sampling probe 3 is stretched under sample liquid level, pressure-detecting device 2
The persistently pressure value changes in detection main line 4, and data feedback will be detected to control system 5.When pressure-detecting device 2 is detected
Pressure value when reaching the limit value set in control system 5, the depth that now sampling probe 3 is stretched into below liquid level be draw it is a certain amount of
Minimum-depth required for sample, the control of control system 5 stops stretching into for sampling probe 3, and sampling probe 3 stops insertion, so as to ensure
The contact liq of the minimum degree of sampling probe 3, is easy to the cleaning of sampling probe.
Because the depth that sampling probe 3 is stretched into below liquid level is relevant with pressure value, then the volume pair of the sample itself in container
The sampling process of sampling probe 3 will not produce interference.When the sample in container is more or relatively expires, sampling probe 3 stretches into vessel port
Depth is shallower；And when the sample in container is less, the depth that sampling probe 3 stretches into vessel port is deeper, but no matter the sample in container
Product are more or few, and when drawing the sample of certain volume, the depth that sampling probe 3 stretches into sample liquid level is identical.By using this hair
Bright sampler, is controlled to the depth that sampling probe 3 is stretched into below liquid level, can avoid occurring when sample is more in container
Sampling probe 3 be fully inserted into, even main line 4 stretches into the problems such as cleaning that is brought in sample is difficult；Meanwhile, when sample in container
When less, the sample volume for the absorption that the depth that also sampling probe 3 can be avoided to stretch into below liquid level is not enough brought does not reach detection will
The problem of asking.
During using sampler of the invention, common operation is to keep depression generator 1 to be in first and close shape
State, sampling probe 3 is extend into below sample liquid level, is now detected pressure value by pressure-detecting device 2 and is fed back to control system
System 5, the depth that control system 5 is stretched into below sample liquid level to sampling probe 3 is controlled.After sampling probe 3 reaches set depth,
Stop stretching into for sampling probe 3, and open depression generator 1 to produce negative pressure, pipette samples liquid enters sampling probe 3, now pressed
The pressure value that force checking device 2 is detected feeds back to control system 5, the volume for controlling drawn sample.When reaching setting
Volume when, control system 5 control depression generator 1 shut down, the volume that now sampling probe 3 is drawn is a certain inspection
The determined volume of sample needed for survey project.
Preferably, triple valve 6, the triple valve 6 are additionally provided with the sampler of the embodiment of the present invention, the main line 4
Including public port 601, normally opened port 602, normally closed port 603, it is close that the public port 601 is arranged on the main line 4
One end of the depression generator 1, the normally opened port 602 is arranged on the main line 4 close to the one of the sampling probe 3
End, the normally closed port 603 is connected with outside air, and the control system 5 is connected with the triple valve 6, control triple valve 6
Opening and closing.
By setting triple valve 6, and by the normally closed port 603 of triple valve 6 and air communication, negative pressure can be balanced and filled
The air pressure in the airtight cavity that 1, sampling probe 3, main line 4 are constituted is put, the work of absorption and the emptying to sample is aided in.In sampling
Before, control system 5 can control to open normally closed port 603, be passed through air, be then shut off normally closed port 603, open normally opened end
Air pressure in mouth 602, balance whole device, is then sampled operation again.After sampling, the sample that sampling probe 3 is drawn
Need to carry out analysis detection, then when sampler is moved to analytical equipment relevant position, control system 5 in feeding analytical equipment
The normally opened port 602 of triple valve 6 is closed in control, is opened normally closed port 603, is passed through air, is then shut off normally closed port 603, beats
Normally opened port 602 is opened, makes depression generator 1, sampling probe 3, the air pressure of the airtight cavity of the composition of main line 4 and ambient pressure flat
Weighing apparatus, promotes the sample in sampling probe 3 to be flowed out out of sampling probe 3, into analytical equipment.In addition, it is necessary to right after sampling once
Waste liquid is emptied and cleaned in sampling probe 3, prevents from causing cross pollution during lower sub-sampling.First waste liquid in sampling probe 3 is discharged into
Waste liquid pool, is then cleaned to sampling probe 3, and sampling probe 3 is stretched into cleaning liquid level, and negative pressure hair is opened in the control of control system 5
Generating apparatus 1, draws cleaning fluid and enters in sampling probe 3, be then shut off depression generator 1, open the normally closed port of triple valve 6
603, air is passed through, normally closed port 603 is then shut off, normally opened port 602 is opened, by depression generator 1, sampling probe 3, supervisor
The air pressure for the airtight cavity that road 4 is constituted is balanced with ambient pressure, is promoted cleaning fluid to be flowed out from sampling probe 3, is so operated repeatedly,
Realize the cleaning to sampling probe 3.Control system 5 coordinates the process of sampling or cleaning, unlatching and pass to each port of triple valve 6
Close and be controlled.
Preferably, sampler of the invention, the main line 4 is provided with threeway, and the threeway is respectively communicated with described take
Sample pin 3, depression generator 1, outside air；The main line 4 is provided with two-way valve 9, the control with outside air connectivity part
System 5 is connected with the two-way valve 9, controls the opening and closing of two-way valve 9.
The scheme that the present invention can also be engaged using threeway with two-way valve.By setting threeway, threeway is respectively communicated with
Sampling probe 3, depression generator 1, outside air；And two-way valve 9 is set, and by two-way valve 9 and air communication, can balance negative
The air pressure in airtight cavity that pressure generating apparatus 1, sampling probe 3, main line 4 are constituted, aids in the work of absorption and the emptying to sample
Make.Before sampling, control system 5 can control to open the air pressure in two-way valve 9, balance whole device, be then shut off two and lead to
Valve 9, then it is sampled operation.After sampling, the sample that sampling probe 3 is drawn needs to carry out analysis inspection in feeding analytical equipment
Survey, then when sampler is moved to analytical equipment relevant position, two-way valve 9 is opened in the control of control system 5, is passed through air, is made
The air pressure and ambient pressure for the airtight cavity that depression generator 1, sampling probe 3, main line 4 are constituted are balanced, and are promoted in sampling probe 3
Sample flow out out of sampling probe 3, into analytical equipment.In addition, it is necessary to arrange waste liquid in sampling probe 3 after sampling once
Sky is simultaneously cleaned, and prevents from causing cross pollution during lower sub-sampling.Waste liquid in sampling probe 3 is first discharged into waste liquid pool, then to taking
Sample pin 3 is cleaned, and sampling probe 3 is stretched into cleaning liquid level, and depression generator 1 is opened in the control of control system 5, draws cleaning
Liquid enters in sampling probe 3, is then shut off depression generator 1, opens two-way valve 9, by depression generator 1, sampling probe 3, master
The air pressure for the airtight cavity that pipeline 4 is constituted is balanced with ambient pressure, is promoted cleaning fluid to be flowed out from sampling probe 3, is so grasped repeatedly
Make, realize the cleaning to sampling probe 3.Control system 5 coordinates the process of sampling or cleaning, and the open and close to two-way valve 9 are entered
Row control.
Preferably, the sampler of the embodiment of the present invention, is additionally provided with air pump 7, bypass line 8, and the air pump 7 passes through
Bypass line 8 is connected with the normally closed port 603 of the triple valve 6 or with the two-way valve 9, the control system 5 with it is described
Air pump 7 is connected, and controls the operating of air pump 7.
The present invention sampler, by setting air pump 7, using triple valve scheme when, by air pump 7 pass through bypass
Pipeline 8 is connected with the normally closed port 603 of the triple valve 6；During the scheme being engaged using threeway with two-way valve, make air pump
7 are connected by bypass line 8 with the two-way valve 9.Actively be passed through air using air pump 7, accelerate depression generator 1,
The speed of air pressure and the ambient pressure balance for the airtight cavity that sampling probe 3, main line 4 are constituted, raising sampling probe 3 evacuation of liquid,
The efficiency of cleaning process.Control system 5 controls the operating of air pump 7, when needing to be passed through air, opens the normally closed of triple valve 6
Port 603, and air pump 7 is opened, air is passed through into device, makes external and internal pressure Fast-Balance.Meanwhile, when discharge sampling probe 3
During interior waste liquid, the waste liquid in sampling probe 3 can be blown into waste liquid pool by the air being passed through by air pump 7；And when cleaning sampling probe
When 3, by using air pump 7, the discharge of cleaning fluid can be accelerated, cleaning efficiency is improved.Likewise, when using two-way valve 9,
When needing to be passed through air, two-way valve 9 is opened, and opens air pump 7, external and internal pressure Fast-Balance can be also realized, accelerate waste liquid
Discharge, the discharge for accelerating cleaning fluid and other effects.
In addition, by using air pump 7, sample can be blown before sampling and stirred evenly, improve the uniformity of sample, from
And make testing result more accurate.Concrete operations are：By the control of control system 5, two-way valve 9 is opened, and open air pump
7, air is passed through into main line 4 by bypass line 8, air sprays from the sample tap of sampling probe 3, realizes the air blowing to sample
Stir evenly.Sampling probe 3 is on sample liquid level or the operation stirred evenly that can blow under liquid level.
Preferably, the cavity volume of the sampling probe 3 is more than or equal to the volume of samples taken.
The cavity volume of sampling probe 3 can be less than the volume for detecting the required sample drawn each time, then provide and once examine
Sample is, it is necessary to carry out many sub-samplings needed for surveying.Then for the consideration in terms of efficiency and reliability, the cavity volume of sampling probe 3
The volume for being more than or equal to and detecting the required sample drawn each time is generally set.The cavity volume of sampling probe 3 and sampling probe 3
It is internal diameter, highly related, the internal diameter of sampling probe 3 can be set big, then height is settable shorter；Or when the internal diameter of sampling probe 3 is small,
Then corresponding height should set higher., can be according to required maximum when different detection projects needs the sample of different volumes
Volume sets the cavity volume of sampling probe 3, can also change the sampling probe 3 of different model (i.e. different cavity volumes).Setting takes
The cavity volume of sample pin 3 be more than or equal to samples taken volume, can in order to sample and sampling probe 3 cleaning.And ought use
Sampling probe 3 cavity volume be more than or equal to samples taken volume when, the vertical height for the liquid that sampling probe 3 is drawn with
The magnitude of voltage (negative pressure value) of micro-pressure sensor is directly proportional, without extra demarcation.
Preferably, the sampling probe 3 is by ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, titanium metal material, or containing ruthenium, rhodium,
It is prepared by the alloy material of any one or more in palladium, silver, osmium, iridium, platinum, gold, titanium.
Preferably, the sampling probe 3 is provided with plating fluorine layer.
The material of sampling probe 3 should be the material for being difficult to chemically react with other materials, especially sample or reagent
Prepare, generally using erosion-resisting ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, titanium metal material, or containing ruthenium, rhodium, palladium, silver, osmium,
Prepared by the alloy material of any one or more in iridium, platinum, gold, titanium, it is to avoid sampling probe 3 reacts with sample or reagent, carries
The durability of high sampling probe 3, and can guarantee that cleaning up is easier.In addition, from above-mentioned metal, sampling probe can be avoided
Material disturbs the detection of detected water sample.If desired for detection water body in iron content, then sampling probe should avoid containing ferro element.
The metal that the present invention is selected, generally without detection in water quality detection, therefore is used as the material for preparing sampling probe 3, Ke Yiti
The reliability of high detection result.When actual use, other metals also may be selected in the sampling probe 3 that pure titanium metal can be selected to prepare
Or sampling probe 3 prepared by alloy, as long as element contained by sampling probe 3 does not influence taken liquid and detection and analysis.
In order to improve the performance such as anticorrosive, plating fluorine layer can be set on sampling probe 3.Plating fluorine layer should be arranged on sampling probe
3 inner surface and outer surface, the top layer of sampling probe 3 is completely covered.Set plating fluorine layer can be in order to the cleaning of sampling probe 3.
Preferably, the depression generator 1 is any in plunger pump, piston pump, membrane pump, peristaltic pump, vavuum pump
It is a kind of.
Depression generator 1 can use any one in plunger pump, piston pump, membrane pump, peristaltic pump, vavuum pump,
Generally using high accuracy, corrosion resistant plunger pump, liquid is drawn and discharged for whole device power is provided.For example using plunger pump
When, in use, the motor driver of plunger pump can be sent instructions to by control system 5, realize and plunger pump is extracted or arranged
Go out the control of liquid operation.
A kind of sampling device, including mechanical arm, the sampler that is connected with mechanical arm that can be moved in certain space, institute
Sampler is stated for above-mentioned sampler.
A kind of detecting system, including above-mentioned sampler, with the analytical instrument tested sample.
The sampler of the present invention, the mechanical arm that can coordinate can move in certain space uses, realize automatic sampling,
Auto injection.Using the sampling device with mechanical arm, coordinate the detecting system of analytical instrument composition, it is possible to achieve analysis detection
The automation of process.
The sampler of the present invention, also can coordinate other sampling devices, analysis and detection device to use, play quantitative liquid draw
The effect of body, and the contact sample of the minimum degree of sampling probe 3 can be controlled, it is easy to the cleaning of sampling probe.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of sampler, it is characterised in that including depression generator (1), pressure-detecting device (2), sampling probe (3),
Main line (4), control system (5), the depression generator (1) are connected with the sampling probe (3) by main line (4),
The depression generator (1) is used to make to produce negative pressure inside sampler；The pressure-detecting device (2) is arranged on the master
On pipeline (4), for detecting pressure；The control system (5) respectively with the depression generator (1), pressure-detecting device
(2) it is connected, the control system (5) receives the data of the pressure-detecting device (2), and controls the depression generator
(1) operating.
2. device according to claim 1, it is characterised in that triple valve (6) is additionally provided with the main line (4), described
Triple valve (6) includes public port (601), normally opened port (602), normally closed port (603), and the public port (601) is set
In the main line (4) close to one end of the depression generator (1), the normally opened port (602) is arranged on the supervisor
Road (4) is connected close to one end of the sampling probe (3), the normally closed port (603) with outside air, the control system (5)
It is connected with the triple valve (6), the opening and closing of control triple valve (6).
3. device according to claim 1, it is characterised in that the main line (4) is provided with threeway, the threeway difference
Connect the sampling probe (3), depression generator (1), outside air；The main line (4) is provided with outside air connectivity part
Two-way valve (9), the control system (5) is connected with the two-way valve (9), the opening and closing of control two-way valve (9).
4. the device according to Claims 2 or 3, it is characterised in that be additionally provided with air pump (7), bypass line (8), described
Air pump (7) is connected by bypass line (8) with the normally closed port (603) of the triple valve (6) or the two-way valve (9),
The control system (5) is connected with the air pump (7), the operating of control air pump (7).
5. the device according to any one of claim 1-3, it is characterised in that the cavity volume of the sampling probe (3) is big
In or equal to samples taken volume.
6. device according to claim 5, it is characterised in that the sampling probe (3) by ruthenium, rhodium, palladium, silver, osmium, iridium, platinum,
It is prepared by gold, titanium metal material, or the alloy material containing any one or more in ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, titanium.
7. device according to claim 6, it is characterised in that the sampling probe (3) is provided with plating fluorine layer.
8. device according to claim 1, it is characterised in that the depression generator (1) be plunger pump, piston pump,
Any one in membrane pump, peristaltic pump, vavuum pump.
9. a kind of sampling device, including mechanical arm, the sampler that is connected with mechanical arm that can be moved in certain space, it is special
Levy and be, the sampler is the device any one of claim 1-7.
10. a kind of detecting system, it is characterised in that including the sampler any one of claim 1-7, and to sample
The analytical instrument tested.
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| CN201710656767.3A CN107271707B (en) | 2017-08-03 | 2017-08-03 | Sample introduction device and detection system |
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|---|---|---|---|
| CN201710656767.3A CN107271707B (en) | 2017-08-03 | 2017-08-03 | Sample introduction device and detection system |
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| CN107271707B CN107271707B (en) | 2020-02-21 |
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| CN109718883A (en) * | 2018-12-25 | 2019-05-07 | 迪瑞医疗科技股份有限公司 | A kind of liquid-transfering device and liquid relief method |
| CN110243636A (en) * | 2019-05-27 | 2019-09-17 | 广州供电局有限公司 | Pipeline gas-liquid sampling device |
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| CN113670664A (en) * | 2020-05-13 | 2021-11-19 | 力合科技（湖南）股份有限公司 | Automatic sampling and sample preparation device |
| CN114384260A (en) * | 2021-12-20 | 2022-04-22 | 长春理工大学 | A device for spotting multiple biological reagents |
| CN115414978A (en) * | 2022-11-07 | 2022-12-02 | 成都理工大学 | Quantitative mechanism and quantitative method for non-polluting and corrosion-resistant liquid chemicals |
| CN116413460A (en) * | 2021-12-31 | 2023-07-11 | 力合科技（湖南）股份有限公司 | Automatic solution analysis device |
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| CN113198637A (en) * | 2021-04-07 | 2021-08-03 | 太原理工大学 | Spraying device and method for detecting multi-carbon alcohol in methanol gasoline |
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| CN114384260A (en) * | 2021-12-20 | 2022-04-22 | 长春理工大学 | A device for spotting multiple biological reagents |
| CN116413460A (en) * | 2021-12-31 | 2023-07-11 | 力合科技（湖南）股份有限公司 | Automatic solution analysis device |
| CN115414978A (en) * | 2022-11-07 | 2022-12-02 | 成都理工大学 | Quantitative mechanism and quantitative method for non-polluting and corrosion-resistant liquid chemicals |
| CN115414978B (en) * | 2022-11-07 | 2023-05-30 | 成都理工大学 | Quantitative mechanism and quantitative method for non-polluting and corrosion-resistant liquid chemicals |
| CN116878963A (en) * | 2023-07-24 | 2023-10-13 | 武汉盾山环安科技有限公司 | A chemical reagent quantitative sampling device |
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