CN207396176U - A kind of nitrogen evaporator of adjustment height - Google Patents

Abstract

The utility model discloses a kind of nitrogen evaporators of adjustment height, its drip irrigation device includes pedestal, it is arranged on the water bath for being used for that heating water bath is carried out to test tube on the pedestal, perpendicular to the supporting rod of the water bath, it is slidably arranged on the supporting rod to fix the sample mounting frame of test tube, and the sample mounting frame upper end is arranged on for the blowning installation blown in test tube, the lifting gear for carrying out lift adjustment along supporting rod glide direction to the sample mounting frame is arranged on the supporting rod, the lifting gear includes being arranged on the sample mounting frame and being set in the fixes sleeve on supporting rod, being arranged in fixes sleeve being capable of radially elastic the first locked component for pushing against supporting rod.Lift adjustment can be carried out in supporting rod length direction to sample mounting frame, operated by the mode that elasticity pushes against more convenient, quick.

Description

A kind of nitrogen evaporator of adjustment height

Technical field

The utility model is related to a kind of chemical analysis device, more specifically, it relates to a kind of nitrogen evaporator of adjustment height.

Background technology

Nitrogen evaporator is mainly used for the sample preparation in liquid phase, gas phase and mass spectral analysis, and nitrogen is usually blown by nitrogen evaporator to be added The surface of hot sample carries out sample concentration, since nitrogen is a kind of inactive gas, can play the role of starvation, prevent Reagent in test tube is aoxidized.

Nitrogen evaporator breaks the vapor liquid equilibrium in liquid overhead using the quick flowing of nitrogen, so that the speed that evaporates adds Soon；And temperature is raised by heating water bath mode, so as to achieve the purpose that concentration.With it is time saving, easy to operate, be easy to control The features such as, expected result can be obtained quickly.

For the existing notification number that can refer to for CN204202972U Chinese utility model patents, which discloses a kind of nitrogen Blow instrument, technical points include chassis, Sample location frame, needle-valve pipe, adjusting screw, centre frame, the needle-valve pipe lower end with it is soft Pipe connects, and hose lower end connects with pointed nozzle, and needle-valve pipe upper end is equipped with handle type switch valve.

In use, test tube is installed on Sample location frame, in experiment, test tube is inserted into water bath, to examination Pipe carries out heating water bath, installs or removes in order to facilitate test tube midway, is immersed test tube in water bath according to different demands Depth is different, and so as to need that the height of Sample location frame is adjusted, existing regulative mode is controlled by adjusting screw It is moved up and down to realize, although movement can also be realized, however, it is desirable to rotate the knob in adjusting screw, operation is complex, It is inconvenient.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of nitrogen evaporator of adjustment height, Lift adjustment can be carried out in supporting rod length direction to sample mounting frame, the mode pushed against by elasticity operates more square Just, fast.

To achieve the above object, the utility model provides following technical solution：

A kind of nitrogen evaporator of adjustment height including pedestal, is arranged on the pedestal to carry out heating water bath to test tube Water bath, perpendicular to the water bath supporting rod, be slidably arranged on the supporting rod for fix test tube sample peace The sample mounting frame upper end is shelved and is arranged on for the blowning installation blown in test tube, on the supporting rod The lifting gear for carrying out lift adjustment along supporting rod glide direction to the sample mounting frame is arranged with, the lifting gear includes It is arranged on the sample mounting frame and is set in the fixes sleeve on supporting rod, be arranged in fixes sleeve being capable of radially bullet Property push against supporting rod the first locked component.

By using above-mentioned technical proposal, sample mounting frame is mounted on supporting rod, and test tube is installed on sample mounting frame, Blowning installation carries out nitrogen blowing for the test tube on sample mounting frame, by the lifting gear of setting to the height of sample mounting frame into Row is adjusted, and radially supporting rod elasticity is pushed against by the first locked component of setting, so that the position of sample mounting frame It is fixed, during up and down adjustment, it is only necessary to lower pull up and down adjustment will can be realized thereon, sample mounting frame is adjusted so as to facilitate Highly.

Preferably, the one end of the supporting rod away from water bath equidistantly offers lock slots annular in shape vertically, when When being fixed to sample mounting frame, the first locked component elasticity is pushed against in lock slots.

By using above-mentioned technical proposal, pass through the lock slots of the annular of setting so that the first locked component being capable of elasticity It is connected in lock slots, so as to avoid the possibility that when fixing sample mounting frame, sample mounting frame is slided along supporting rod so that Experimental implementation is relatively stable, safety.

Preferably, the fixes sleeve offers the sliding hole of perforation along axle center, the supporting rod is slidably arranged in sliding In hole, the fixes sleeve in radially offering the first lock hole on side wall, wherein, the depth of the first lock hole, which is more than, fixes The radius of sleeve and the diameter for being less than fixes sleeve；First locked component includes being slidably arranged in first lock hole The first positive stop key and one end be connected to the first /V bullet that the first lock hole bottom other end is connected to the first positive stop key end Spring, wherein, it is offered on the first positive stop key and is used to support the first kidney slot that bar passes through.

By using above-mentioned technical proposal, supporting rod is slidably arranged in sliding hole, by by the depth of the first lock hole It is set greater than the radius of fixes sleeve and can realize the first kidney slot on the first positive stop key being set on supporting rod, pass through The first limit spring set abuts the first positive stop key elasticity so that the first kidney slot is supported close to one end of the first limit spring It is connected on supporting rod, so as to be pushed against to supporting rod elasticity, in oscilaltion, presses the first positive stop key so that sample mounting frame It can slide up and down, operate more convenient simple on supporting rod.

Preferably, the supporting rod is provided with what the sample mounting frame was flexibly supported close to one end of water bath Elastic parts.

It,, can be with when sample mounting frame is in slide downward by the elastic parts of setting by using above-mentioned technical proposal It is connected on elastic parts, buffering effect can be played when gliding to sample mounting frame, so as to avoid because sample is caused to be pacified It shelves downslide and is connected to water-bath trench bottom, test tube Fragmentation Phenomena caused by possibility.

Preferably, the elastic parts includes the installing pipe being sheathed on the supporting rod and is set in installing pipe Load spring, the sample mounting frame is connected on load spring.

By using above-mentioned technical proposal, reinforcement protection can be played the role of to support tube by the installing pipe of setting, Buffering effect is played when can glide by being set in the load spring on the outside of installing pipe to sample mounting frame.

Preferably, the sample mounting frame includes fixing the air tube disk of the fixes sleeve, being arranged under air tube disk Side is used for the connecting rod fixed the rack for test tube of test tube and be fixedly connected with the air tube disk with rack for test tube, wherein, the air tube Disk, rack for test tube are all set on the supporting rod.

By using above-mentioned technical proposal, fixes sleeve is fixedly installed on air tube disk, the rack for test tube of lower section is used to install Test tube so that test tube can be slided up and down along supporting rod together with fixes sleeve, so as to fulfill to test tube in water-bath Height in slot is adjusted.

Preferably, the rack for test tube includes being used to support the chassis of test tube, in being sequentially arranged at intervals with clamping disk on chassis And fixed disk, multiple card interfaces one are along the circumferential direction offered in clamping disk outer edge and equidistantly, opened up in the fixed disk There is the card interface two overlapped on upper vertical direction with the card interface one, when test tube is connected to card interface one, in card interface two When, it is set in by the elastic collar of setting on the outside of test tube and it is fixed.

By using above-mentioned technical proposal, by the chassis of setting, clamping disk and fixed disk, for consolidating to test tube It is fixed, test tube is connected at card interface one and card interface two, test tube is fixed at card interface by using elastic collar, so as to So that test tube is relatively stable.

Preferably, there are two the fixed disk interval settings, set on two pieces of fixed disks and in the solid fixation in two inside of card interface Be equipped with caging bolt, the caging bolt be provided in circumferencial direction it is multiple, the elastic collar be set in two pieces of fixed disks it Between and be connected on caging bolt.

By using above-mentioned technical proposal, pass through two fixed disks of setting and the /V set between fixed plate Elastic collar can be limited between fixed disk by bolt so that elastic collar is connected to when there is test tube on test tube, examination useless Guan Shi, elasticity are connected in limit spring.

In conclusion the utility model has the advantages that：

1st, sample mounting frame is mounted on supporting rod, and test tube is installed on sample mounting frame, and blowning installation is installed for sample Test tube on frame carries out nitrogen blowing, and the height of sample mounting frame is adjusted by the lifting gear of setting, passes through setting First locked component radially pushes against supporting rod elasticity, so that the position of sample mounting frame is fixed, during up and down adjustment, only It needs lower pull up and down adjustment to can be realized thereon, so as to facilitate the height for adjusting sample mounting frame；

2nd, pass through setting annular lock slots so that the first locked component can elasticity be connected in lock slots, so as to It avoids when fixed sample mounting frame, the possibility that sample mounting frame is slided along supporting rod so that experimental implementation is relatively stable, peace Entirely；

3rd, supporting rod is slidably arranged in sliding hole, by the way that the depth of the first lock hole is set greater than fixes sleeve Radius, which can be realized, is set in the first kidney slot on the first positive stop key on supporting rod, passes through the first limit spring pair of setting First positive stop key elasticity abuts so that the first kidney slot is connected to close to one end of the first limit spring on supporting rod, so as to right Supporting rod elasticity push against, in oscilaltion, press the first positive stop key so that sample mounting frame can on supporting rod on glide It is dynamic, it operates more convenient simple.

Description of the drawings

Fig. 1 is a kind of overall schematic of the nitrogen evaporator of adjustment height；

Fig. 2 is a kind of structure diagram of prominent heating unit in nitrogen evaporator of adjustment height；

Fig. 3 is a kind of structure diagram of prominent sample mounting frame in nitrogen evaporator of adjustment height；

Fig. 4 is a kind of structure diagram of prominent rack for test tube in nitrogen evaporator of adjustment height；

Fig. 5 is a kind of structure diagram of prominent lifting gear in nitrogen evaporator of adjustment height；

Fig. 6 is a kind of sectional view of prominent lifting gear in nitrogen evaporator of adjustment height；

Fig. 7 is a kind of structure diagram of prominent blowning installation in nitrogen evaporator of adjustment height；

Fig. 8 is a kind of structure diagram of prominent air distributing device in nitrogen evaporator of adjustment height；

Fig. 9 is a kind of structure diagram of gas distribution plate in nitrogen evaporator of adjustment height；

Figure 10 is a kind of sectional view of prominent gas distribution plate in nitrogen evaporator of adjustment height；

Figure 11 is a kind of structure diagram of prominent gas-guide tube in nitrogen evaporator of adjustment height.

Reference numeral：1st, pedestal；11st, water bath；111st, discharge outlet；112nd, drainpipe；113rd, ball valve；12nd, installing port；2、 Heating unit；21st, shell is heated；22nd, power interface；3rd, supporting rod；31st, lock slots；32nd, admission line；33rd, gas-guide tube；34、 Air inlet main valve；4th, sample mounting frame；41st, air tube disk；411st, jack hole；412nd, slot is slipped；42nd, rack for test tube；421st, chassis； 4211st, permeable mouth one；4212nd, permeable mouth two；422nd, it is clamped disk；4221st, card interface one；423rd, fixed disk；4231st, card interface Two；4232nd, elastic collar；4233rd, caging bolt；43rd, connecting rod；5th, lifting gear；51st, stop sleeve；52nd, fixes sleeve； 521st, hole is slipped；522nd, the first lock hole；53rd, the first locked component；531st, the first positive stop key；5311st, fixed part；5312nd, One kidney slot；532nd, the first limit spring；54th, elastic parts；541st, installing pipe；542nd, load spring；543rd, cylinder is slipped；6th, blow Device of air；61st, air tube；62nd, fixed pedestal；621st, sleeve is slipped；622nd, spliced eye；623rd, the second lock hole；63rd, the second locking Component；631st, the second positive stop key；6311st, the second kidney slot；632nd, the second limit spring；64th, fixation kit；641st, bullet is compressed Spring；642nd, gasket；643rd, guard shield；644th, hook knob；7th, air distributing device；71st, gas distribution plate；711st, mounting hole；712nd, ring Shape slot；713rd, internal projection；7131st, counterbore；7132nd, seal groove；7133rd, sealing ring；714th, outer protrusion portion；715th, inner groove； 716th, air admission hole；717th, air distribution hole；72nd, appendix；721st, gas-tpe fitting one；722nd, tracheae regulating valve；73rd, air inlet pipe.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.Wherein same or similar label represents phase With either similar element or there is same or like element.The embodiment described below in conjunction with the accompanying drawings is exemplary , it is only used for explaining the utility model, and it is not intended that limitation to the utility model.

In the description of the utility model, it is to be understood that term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the instructions such as " level ", " top ", " bottom ", " interior ", " outer ", " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " Either position relationship is based on orientation shown in the drawings or position relationship in orientation, is for only for ease of description the utility model Simplify description rather than instruction and either imply that signified device, component or element there must be specific orientation, with specific Azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, for term " first ", " second " only For descriptive purposes, and it is not intended that instruction either implies the number of relative importance or the implicit technical characteristic for indicating instruction Amount." first " is defined as a result, the feature of " second " can be expressed or what is implied includes one or more this feature. In the description of the utility model, unless otherwise indicated, the meaning of " multiple " refers to two or more.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model Dress ", " connected ", " connection " should be interpreted broadly, such as can be fixedly connected or be detachably connected or integral Connection, can be mechanical connection, can also be connected directly, can also be indirectly connected by intermediary, can be two Connection inside element.For those of ordinary skills, above-mentioned term can be understood in this reality as the case may be With the concrete meaning in new.

A kind of nitrogen evaporator of adjustment height, as depicted in figs. 1 and 2, including pedestal 1, the heating being arranged at below pedestal 1 dress The supporting rod 3 for put 2, setting up perpendicular to 1 center of pedestal, the sample installation that is arranged on supporting rod 3 and can slide up and down Frame 4, be arranged at 4 upper end of sample mounting frame and for adjust sample mounting frame 4 along 3 oscilaltion of supporting rod lifting gear 5, set It puts and is used to the blowning installation 6 to blowing in test tube on sample mounting frame 4 and is arranged on sample mounting frame 4 be used for Test tube in use, is mounted on sample mounting frame 4, by using air distributing device 7 by the air distributing device 7 of distribution first Nitrogen is accessed, nitrogen blows to test tube by blowning installation 6.

1 rectangular housing of pedestal, cylinder water bath 11 is offered in the one side of pedestal 1, wherein, in water bath 11 Inside it is contained with distilled water, the lower end of sample mounting frame 4（One end of test tube is installed）It is immersed in the distilled water in water bath 11.

The one end of pedestal 1 away from water bath 11 offers installing port 12, in the bottom of water bath 11 and close to installing port 12 One side be fixedly installed heating unit 2, the distilled water in water bath 11 is heated by heating unit 2, so as to Heating water bath is carried out to invisible spectro liquid.

Heating unit 2 includes being fixed at the heating shell 21 of 11 bottom of water bath and be coated in heating shell 21 The heating rod in portion（It is not shown in figure）, wherein, heating shell 21 is in the form of annular discs, and entirety is made of aluminum material, will be heated Inside it, since aluminium has good heat conductivility, the heat that heating rod generates can quickly be conducted to adding stick entity package In hot shell 21, heating shell 21 heats water bath 11, and such design structure expands heating surface (area) (HS so that water bath Water in 11 is heated more uniformly, reduces scattering and disappearing for heating rod energy to a certain extent, improves the efficiency of heating surface.

The power interface 22 of heating rod is arranged on heating 21 side wall of shell, and heating rod is powered from bottom；Meanwhile Discharge outlet 111 is offered in 11 bottom of water bath, is welded at discharge outlet 111 from 11 bottom of water bath and extended to outside pedestal 1 Drainpipe 112, for by water bath 11 water discharge, meanwhile, be provided on drainpipe 112 opening or be closed draining The ball valve 113 of pipe 112.

As shown in Figure 1, the axial centre in water bath 11 is fixedly installed supporting rod 3 straight up, wherein, sample peace 4 are shelved to be set on supporting rod 3.

Sample mounting frame 4 includes air tube disk 41, positioned at the rack for test tube 42 of the lower section of air tube disk 41 and for by air tube disk 41 The multiple connecting rods 43 being fixedly connected with rack for test tube 42, wherein, air tube disk 41 is rounded, and diameter is less than the straight of water bath 11 Footpath, when in use, rack for test tube 42 are located at lower end and are placed in water bath 11.

As shown in figure 3, rack for test tube 42 includes chassis 421 identical with 41 diameter of air tube disk, is fixed above chassis 421 The clamping disk 422 of setting and clamping disk 422 top and two fixed disks 423 being mutually parallel are fixed at, wherein, bottom Disk 421 is clamped disk 422 and two fixed disks 423 between vertical direction all there are gap, solid successively by connecting rod 43 Fixed connection.

As shown in Figure 3 and Figure 4, chassis 421 is rounded, is along the circumferential direction uniformly provided on chassis 421 multiple permeable Mouth 1, permeable mouth 2 4212 is offered at the center on chassis 421, when chassis 421 is placed in water bath 11, Neng Goufang Just the distilled water in water bath 11 covers chassis 421 by permeable mouth 1 and permeable mouth 2 4212.

When installing test tube, the bottom of test tube is connected on chassis 421, and side wall is connected to clamping disk 422 and fixed plate 423 On.

Multiple card interfaces 1 are equidistantly evenly arranged on clamping disk 422 and in circle circumferential outer edge, wherein, card Interface 1 is in arc line shaped and smaller close to one side opening of the center of circle, so as to facilitate the columned test tube of clamping；In two fixations Card interface 2 4231 is offered with the position that card interface 1 aligns so that card interface two on disk 423 and in vertical direction 4231 is corresponding respectively with card interface 1, wherein, card interface 2 4231 is arc-shaped, smaller in the side opening close to the center of circle, Test tube can be connected at card interface 2 4231,.

As shown in Figure 1 and Figure 4, when being connected to test tube at 2 4231 position of card interface 1 and card interface, in order to /V is carried out in the horizontal direction to test tube, can be fixed in card interface 1 and card interface 2 4231, it is solid at two Elastic collar 4232 is provided between price fixing 423, for test tube to be fixed.

Multiple /Vs are along the circumferential direction fixedly installed between two fixed disks 423 and positioned at 2 4231 inside of card interface Bolt 4233, when no test tube needs fixed, 4232 elasticity of elastic collar is connected on caging bolt 4233, when needs are to examination When pipe is fixed, elastic collar 4232 to away from center of circle one side is pulled, test tube is fixed on 4232 inside of elastic collar.

Wherein, the jack hole 411 passed through for supporting rod 3 is offered at the center of air tube disk 41 and clamping disk 422, so that Sample mounting frame 4 is obtained to slide on supporting rod 3.

When being operated to test tube, it is necessary to a test tube part is immersed in water bath 11, according to the need of different experiments Will, sample mounting frame 4 carries out sample mounting frame 4 by lifting gear 5 along 3 up and down adjustment of supporting rod by lifting gear 5 While fixed, it can select to immerse test tube into different depth, so as to adapt to different experiment demands.

As shown in Figure 5 and Figure 6, lifting gear 5 include be arranged on straight up 41 center of air tube disk stop sleeve 51, in 51 upper end of stop sleeve fixed setting fixes sleeve 52 and in the first locked component 53 in fixes sleeve 52, wherein, branch Support set cylinder 51 is threaded in jack hole 411（As shown in Figure 4）It is interior, so as to fulfill between stop sleeve 51 and air tube disk 41 can Dismantling connection.

Center offers sliding hole 521 in stop sleeve 51, fixes sleeve 52 so that supporting rod 3 can be slipped in cunning It connects in hole 521, the first locked component 53 can radially push against supporting rod 3, so as to which sample support frame 4 be fixed.

The first lock hole 522 is offered on 52 side wall of fixes sleeve and radially, wherein, the depth of the first lock hole 522 Degree is more than the radius of fixes sleeve 52 and less than its diameter, so that the sliding hole 521 of the first lock hole 522 connection, the first lock Determine 522 one end of hole and form opening, the other end is sunken to inside fixes sleeve 52, and the first locked component 53 is arranged on the first lock hole In 522.

In order to preferably install the first locked component 53, the diameter of fixes sleeve 52 is more than stop sleeve 51, the first locking The diameter in hole 522 is more than the diameter in sliding hole 521.

First locked component 53 include being slidably arranged in the first positive stop key 531 in the first lock hole 522 and one end with First lock hole, 411 bottom fixed setting other end elasticity is connected to the first limit spring 532 on the first positive stop key 531, In, the first limit spring 532 is in compressive state, in order to enable the company between the first limit spring 532 and the first positive stop key 531 It connects relatively stable, fixed part 5311 is formed with close to one end of the first limit spring 532 in the first positive stop key 531, wherein, Fixed part 5311 is connected to 532 inside of the first limit spring.

First positive stop key 531 is cylindrical, offers on its side wall and radially the first kidney slot 5312 of perforation, and Supporting rod 3 passes through the first kidney slot 5312 so that the first positive stop key 531 can not depart from the first lock hole 522, pass through the first limit Position spring 532 pushes against the elasticity of the first positive stop key 531 so that supporting rod 3 is connected to the first kidney slot 5312 close to the first limit One end of position spring 532.

As shown in Figure 3 and Figure 6, multiple lock slots 31 are along the circumferential direction offered on the side wall of the upper end of supporting rod 3, and The position contacted when fixes sleeve 52 is slided up and down with supporting rod 3 can cover all lock slots 31, when lock slots 31 are in During the first 522 position of lock hole, the first kidney slot 5312 on the first positive stop key 531 is connected in lock slots 31, so as to sample Product mounting bracket 4 is fixed.

When pressing the first positive stop key 531, the first kidney slot 5312 to close to the first limit spring 532 1 Slideslip, from And depart from lock slots 31 so that fixes sleeve 52 can slide up and down, and during sliding up and down, by by the first positive stop key 531 are connected in different lock slots 31, so as to fulfill the adjusting to 4 height of sample mounting frame.

It should be noted that when the first positive stop key 531 is connected on one lock slots 31 of the lowermost, chassis 421 with There are gaps between bottom in water bath 11.

Meanwhile in order to prevent sample mounting frame 4 during downslide since operation error causes to be connected to 11 bottom of water bath Portion is provided with elastic parts 54 in supporting rod 3 close to one end of water bath 11, when sample mounting frame 4 is slipped along supporting rod 3 in water When in bath 11, elastic abutting is carried out to it.

Elastic parts 54 include being set on supporting rod 3 and close to water bath one end installing pipe 541 and be set in peace Load spring 542 in tubulature 541, wherein, when sample mounting frame 4 on supporting rod 3 when sliding, the jack hole on chassis 421 411 lower ends are fixedly installed sliding cylinder 543（As shown in Figure 4）, sliding cylinder 543 can be slided in installing pipe 541, while elasticity It is connected on load spring 542, when sample mounting frame 4 glides to it into row buffering, meanwhile, pass through the installing pipe 541 of setting Support tube 3 can be reinforced, be become by the line slip between 543 chassis 421 of sliding cylinder of setting and installing pipe 3 It slides in face so that sample mounting frame 4 is relatively stable during sliding up and down.

As shown in Figure 3 and Figure 7, blowning installation 6 is arranged on air tube disk 41 and multiple along its circumference to being evenly arranged with, and is used It blows in the test tube on sample mounting frame 4.

Blowning installation 6 includes the air tube 61 being vertically arranged and the test tube to being installed on sample mounting frame 4 is blown, sets It puts in air tube disk 41 and the fixed pedestal 62 that is set on 61 side wall of air tube and is arranged on fixed pedestal 62 to fix gas Second locked component 63 of pin 61；Wherein, air tube 61 is the minute hand of boring.

Fixed pedestal 62 is cylinder, is axially perpendicular to air tube disk 41, in 62 lower face circle centre position one of fixed pedestal Sliding sleeve 621 is formed with, the spliced eye 622 through sliding sleeve 621 is offered at the axle center of fixed pedestal 62 so that gas Pin 61 can pass through spliced eye 622 and can be slided up and down along spliced eye 622.

The second lock hole 623 is offered on side wall on fixed pedestal 62 and radially, wherein, the second lock hole 623 Depth be more than the radius of fixed pedestal 62 and less than its diameter so that the second lock hole 623 penetrates through spliced eye 622, the One end of two lock holes 623 forms opening, and the other end is sunken to inside fixed pedestal 62, and the second locked component 63 is arranged on the second lock Determine in hole 623.

Second locked component 63 includes the second positive stop key 631 being slidably arranged in the second lock hole 623, one end is connected to Second lock hole, the 623 bottom other end is connected to the second limit spring 632 of 631 end of the second positive stop key, wherein, the second /V Spring 632 is in compressive state, and the diameter of the second positive stop key 631 is more than the diameter of air tube 61, on 631 side wall of the second positive stop key The second kidney slot 6311 through its side wall is opened up, air tube 61 passes through the second kidney slot 6311, so that the second positive stop key 631 The second lock hole 623 can not be departed from, the elasticity of second positive stop key 631 is abutted by the second limit spring 632 so that second Positive stop key 631 is moved to the one side away from the second limit spring 632, so as to which the second kidney slot 6311 is close to the second limit spring 632 one end elasticity is connected on 61 side wall of air tube, so as to carry out flexible fastening in vertical direction to air tube 61.

When invisible spectro liquid level difference, by upwardly or downwardly sliding air tube 61 so that air tube 61 is located at solid It is different to determine the length of 62 lower section of pedestal, is in center in liquid so as to adjust 61 lower end of air tube so that the effect of nitrogen blowing is more preferable.

In use, it is often necessary to the fine position, it is necessary to by air tube 61 is operated to the test tube of different-diameter Nitrogen blowing is carried out at test tube axis center, obtains preferable effect, so as to which fixed pedestal 62 is slidably arranged in air tube disk 41 On.

Circumferencial direction on air tube disk 41 and parallel to being radially angularly uniformly provided with multiple sliding slots in kidney-shaped 412, fixed pedestal 62 is in the top of air tube disk 41, slips sleeve 621 and passes through sliding slot 412, and passes through the fixation group of setting Part 64 is to its flexible fastening.

Fixation kit 64 includes being set on sliding sleeve 621 and elasticity is connected to the holddown spring of 41 lower face of air tube disk 641st, it is set in sliding sleeve 621 and is connected to the gasket 642 of 641 lower end of holddown spring, in holddown spring 641 and gasket 642 Guard shield 643 that outside is provide with is threaded with hook knob 644 on sliding sleeve 52 and in 643 lower end of guard shield, So that holddown spring 641 can elasticity be pushed against 41 lower surface of air tube disk, by 62 flexible fastening of fixed pedestal, meanwhile, lead to Application external force is crossed, fixed pedestal 62 can be slided along sliding slot 412, adjustment fixed pedestal 62 is in the position in sliding slot 412 It puts, so that air tube 61 can be maintained at axial centre or adjust as needed to other positions.

As shown in figure 8, air distributing device 7 is used to carry out distribution to air tube 61, including the gas distribution plate being arranged on air tube disk 41 71st, the air inlet pipe 73 that is connected with gas distribution plate 71 and the appendix 72 that the gas in gas distribution plate 71 is transmitted to each air tube 61.

Gas distribution plate 71 is arranged on 41 upper surface of air tube disk and positioned at the center of air tube disk 41, is opened up at the center of gas distribution plate 71 There is mounting hole 711, internal thread is offered in mounting hole 711, thus will when stop sleeve 51 is threaded on air tube disk 41 Gas distribution plate 71 is fixed on air tube disk 41.

As shown in Figure 8 and Figure 9, annular groove 712 is offered close to axial one end of air tube disk 41 in gas distribution plate 71, annular Slot 712 forms interior protruding portion 713 close to the one side of mounting hole 711, and outer protruding portion 714 is formed in 712 outside of annular groove；In order to make The fixation obtained between gas distribution plate 71 and air tube disk 41 is more stablized, on internal projection 713 and outer protrusion portion 714 along the circumferential direction Multiple counterbores 7131 are offered, counterbore 7131 offers internal thread, when gas distribution plate 71 is mounted on air tube disk 41, by air tube 41 lower section of disk is threaded in through air tube disk 41 in counterbore 7131 by using bolt, and gas distribution plate 71 is reinforced.

Inner groove 715 is offered in annular groove 712 and radially to one end close to outer protrusion portion 714, in gas distribution plate It is radially opened up on 71 side wall there are one the air admission hole 716 for running through inner groove 715, air admission hole 716 is used to access nitrogen； Gas distribution plate 71 is uniformly provided with multiple air distribution holes 717 on one end away from air tube disk 41, wherein, air distribution hole 717 penetrates through inner groove 715；So as to be passed through nitrogen by air admission hole 716, nitrogen is evenly distributed by multiple air distribution holes 717.

As shown in Figure 9 and Figure 10, gas distribution plate 71 and air tube disk 41 in order to prevent（As shown in Figure 8）Between gas leakage, dash forward inside It plays the one side of portion 713 and outer protrusion portion 714 away from air distribution hole 717 and along the circumferential direction offers seal groove 7132, in seal groove Sealing ring 7133 is provided in 7132, is fixed on when by gas distribution plate 71 on air tube disk 41, two sealing rings 7133 are pushed against air tube On disk 41, annular groove 712 is sealed.

As shown in figure 8, one end of appendix 72 connects air distribution hole 717 by gas-tpe fitting 1, the other end passes through tracheae Regulating valve 722 connects 61 upper end of air tube, is supplied so as to fulfill to air tube 61, meanwhile, by tracheae regulating valve 722 to whether supplying It is controlled.

When in use, it can be freely rotated in order to facilitate sample mounting frame 4, nitrogen is accessed by lower section, so as to not influence sample The rotation of product mounting bracket 4.

As shown in figs, admission line 32 is offered in 3 inside of supporting rod, wherein, 3 lower end of supporting rod, which passes through, to be added Hot shell 21 and gas-guide tube 33 being connected in heating shell 21 lower end, gas-guide tube 33 is passed through by the side wall of pedestal 1, and in pedestal 1 Air inlet main valve 34 is provided on the gas-guide tube 33 in outside, so as to be used to connect to whether distribution controls, at air inlet main valve 34 The nitrogen that outside is equipped with.

The both ends of air inlet pipe 73 are all connected with gas-tpe fitting 2 731 so that 73 threaded one end of air inlet pipe is connected to supporting rod 3 Upper end, the other end are threaded on air admission hole 716.

It should be noted that in the joint of all tracheaes, then used if there is gas leakage or the mode being threadedly coupled Raw material band is wound processing, prevents gas leakage.

Intake process is：It is first turned on air inlet main valve 34 so that nitrogen enters gas-guide tube 33, successively by admission line 32nd, air inlet pipe 73 enters gas distribution plate 71, and different appendixs 72 is flowed to by air distribution hole 717 in gas distribution plate 71, by using Tracheae regulating valve 722 controls whether to supply air tube 61, it is achieved thereby that air tube 61 is separately controlled.

When in use, first, appropriate distilled water is added in water bath 11, and is heated to the energization of heating unit 2； Secondly, reagent is in vitro added in, test tube is fixed at card interface 1 and card interface 2 4231, and by using elasticity Lasso 4232 is fixed, and air tube 61 is adjusted according to the height of liquid level in the size of test tube and test tube so that at air tube 61 In in test tube and at the center of reagent.

Sample mounting frame 4 is set on supporting rod 3, by pressing the first positive stop key 531 so that test tube is in water bath In 11 and in appropriate height in distilled water, sample mounting frame 3 is fixed by the first positive stop key 531；The opening tracheae of selectivity Regulating valve 722 carries out blown work by air tube 61 to invisible spectro reagent.

This specific embodiment is only explanation to the utility model, is not the limitation to the utility model, ability Field technique personnel can as needed make the present embodiment the modification of no creative contribution after this specification is read, but As long as it is all protected in the right of the utility model be subject to Patent Law.

Claims (8)

1. a kind of nitrogen evaporator of adjustment height, including pedestal（1）, be arranged on the pedestal（1）On for test tube carry out water-bath The water bath of heating（11）, perpendicular to the water bath（11）Supporting rod（3）, be slidably arranged in the supporting rod（3）Upper use In the sample mounting frame of fixed test tube（4）And it is arranged on the sample mounting frame（4）Upper end is used for blowing in test tube Blowning installation（6）, it is characterized in that：

The supporting rod（3）On be arranged with to the sample mounting frame（4）Along supporting rod（3）Glide direction carries out lift adjustment Lifting gear（5）, the lifting gear（5）Including being arranged on the sample mounting frame（4）It goes up and is set in supporting rod（3）On Fixes sleeve（52）, be arranged at fixes sleeve（52）On can radially elasticity push against supporting rod（3）The first locked component （53）.

2. the nitrogen evaporator of adjustment height according to claim 1, it is characterized in that：

The supporting rod（3）Away from water bath（11）One end equidistantly offer lock slots annular in shape vertically（31）, when To sample mounting frame（4）When fixed, the first locked component elasticity is pushed against lock slots（31）It is interior.

3. the nitrogen evaporator of adjustment height according to claim 1 or 2, it is characterized in that：

The fixes sleeve（52）The sliding hole of perforation is offered along axle center（521）, the supporting rod（3）It is slidably arranged in sliding Hole（521）It is interior, the fixes sleeve（52）In radially offering the first lock hole on side wall（522）, wherein, the first lock hole （522）Depth be more than fixes sleeve（52）Radius and less than fixes sleeve（52）Diameter；

First locked component（53）Including being slidably arranged in first lock hole（522）The first interior positive stop key（531）、 And one end is connected to the first lock hole（522）The bottom other end is connected to the first positive stop key（531）First limit spring of end （532）, wherein, in the first positive stop key（531）On offer and be used to support bar（3）The first kidney slot passed through（5312）.

4. the nitrogen evaporator of adjustment height according to claim 1, it is characterized in that：

The supporting rod（3）Close to water bath（11）One end be provided with to the sample mounting frame（4）It is flexibly supported Elastic parts（54）.

5. the nitrogen evaporator of adjustment height according to claim 4, it is characterized in that：

The elastic parts（54）Including being sheathed on the supporting rod（3）On installing pipe（541）And it is set in installing pipe （541）On load spring（542）, the sample mounting frame（4）It is connected to load spring（542）On.

6. the nitrogen evaporator of adjustment height according to claim 1, it is characterized in that：

The sample mounting frame（4）Including being used to fix the fixes sleeve（52）Air tube disk（41）, be arranged on air tube disk （41）Lower section is used to fix the rack for test tube of test tube（42）And by the air tube disk（41）And rack for test tube（42）The company being fixedly connected Extension bar（43）, wherein, the air tube disk（41）, rack for test tube（42）All it is set in the supporting rod（3）On.

7. the nitrogen evaporator of adjustment height according to claim 6, it is characterized in that：

The rack for test tube（42）Chassis including being used to support test tube（421）, in chassis（421）On spaced clamping successively Disk（422）And fixed disk（423）, in clamping disk（422）Outer edge and along the circumferential direction equidistantly offer multiple card interfaces one （4221）, in the fixed disk（423）On offer in vertical direction and the card interface one（4221）The card interface two of coincidence （4231）, when test tube is connected to card interface one（4221）, card interface two（4231）When interior, pass through the elastic collar of setting（4232） It is set on the outside of test tube and it is fixed.

8. the nitrogen evaporator of adjustment height according to claim 7, it is characterized in that：

The fixed disk（423）There are two interval settings, two pieces of fixed disks（423）Above and in card interface two（4231）Inside is fixed It is provided with caging bolt（4233）, the caging bolt（4233）Multiple, the elastic collar is provided in circumferencial direction （4232）It is set in two pieces of fixed disks（423）Between and be connected to caging bolt（4233）On.