CN217332313U

CN217332313U - Liquid sample introduction device adaptable to double-channel chromatograph

Info

Publication number: CN217332313U
Application number: CN202123420606.5U
Authority: CN
Inventors: 庄佳伟; 余青霓
Original assignee: Changzhou Panyu Instrument Co ltd
Current assignee: Changzhou Panyu Instrument Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-30
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a liquid sampling device of adaptable binary channels chromatograph relates to chromatograph sampling device technical field. This liquid sampling device of adaptable binary channels chromatograph includes organism, sample dish and sampling tube, the inside mount that is provided with of organism, the sampling tube sets up inside the mount, mount top fixedly connected with fixed plate, fixed plate bottom one side fixedly connected with fixed block, the spacing spring of fixed block bottom fixedly connected with, mount bottom one side fixedly connected with limiting plate, sampling tube bottom fixedly connected with stop collar, the stop collar rear side fixedly connected with locating piece, the inside fixedly connected with needle tubing of stop collar, needle tubing and stop collar looks adaptation. This liquid sampling device of adaptable binary channels chromatograph is favorable to carrying out quick fixed mounting to the sampling tube, improves fixed effect, is favorable to buffering, stability when improving the operation.

Description

Liquid sample introduction device adaptable to double-channel chromatograph

Technical Field

The utility model relates to a sampling device specifically is liquid sampling device of adaptable binary channels chromatograph belongs to chromatograph sampling device technical field.

Background

A chromatograph is an apparatus for performing chromatographic separation analysis. Comprises a sample introduction system, a detection system, a recording and data processing system, a temperature control system, a mobile phase control system and the like. Modern chromatographs have the characteristics of stability, sensitivity, versatility, high degree of automation and the like. There are gas chromatograph, liquid chromatograph, gel chromatograph, and the like. These chromatographs are widely used for analyzing a certain content of a chemical product or a polymer material, and gel chromatography is also used for measuring the molecular weight and distribution of the polymer material.

A sample injector is a device that can quantitatively introduce an analysis sample into a column in a chromatography system. Push-in autosamplers are also common in design, and this technique is very similar to manual sampling. The syringe is moved to the sample vial to aspirate a predetermined amount of sample and then moved to the sample inlet to inject the sample into the sample loop. The sample amount required by the design mode is far less than that of a suction type design, the suction and the discharge of the injector are controlled and completed under the stepping motor, the high precision and the high accuracy can be achieved, and the deviation of the sample injection result is below 0.5% under the normal condition.

The current autosampler is carrying out the during operation with the chromatograph, need open the injector, and put the sampling needle on the inside installing support of injector, displacement motor control installing support descends, the sampling needle is under the control of extraction motor, promote sampling needle pull rod ration extraction sample, tray motor and displacement motor control syringe coaster and sample chassis reset in proper order, accomplish the advance a kind location, but when the sampling needle carries out the solid with the injector, the operating procedure is loaded down with trivial details, it is inconvenient to use, the location to the sampling needle during the installation is comparatively troublesome, if fixed effect is not good, the sampling needle can take place the displacement during the use, make bottom syringe needle probably bump with other parts, influence the sample.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at providing a liquid sampling device of adaptable binary channels chromatograph just in order to solve above-mentioned problem to when solving among the prior art sampling needle and sampler and fixing, operating procedure is loaded down with trivial details, and it is inconvenient to use, and is comparatively troublesome to the location of sampling needle during the installation, if fixed effect is not good, the displacement can take place for the sampling needle during the use, makes the bottom syringe needle probably bump with other parts, influences the problem of sample.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: liquid sampling device of adaptable binary channels chromatograph, including organism, sample dish and sampling tube, the inside mount that is provided with of organism, the sampling tube sets up inside the mount, mount top fixedly connected with fixed plate, fixed plate bottom one side fixedly connected with fixed block, the spacing spring of fixed block bottom fixedly connected with, mount bottom one side fixedly connected with limiting plate, sampling tube bottom fixedly connected with stop collar, the stop collar rear side fixedly connected with locating piece, the inside fixedly connected with needle tubing of stop collar, needle tubing and stop collar looks adaptation.

Preferably, limiting plate top fixedly connected with push pedal, push pedal and needle tubing looks adaptation, a plurality of inserted bars of needle tubing bottom fixedly connected with, the inserted bar run through the limiting plate and with limiting plate sliding connection, push pedal top fixedly connected with stopper is favorable to spacing to the needle tubing.

Preferably, inserted bar bottom fixedly connected with baffle, limiting plate bottom fixedly connected with reset spring, reset spring and baffle fixed connection are favorable to spacing inserted bar and push pedal.

Preferably, mount one side bottom fixedly connected with stable cover, stable cover and stop collar looks adaptation, the fixed cover of stable cover bottom fixedly connected with, the inside sliding connection of fixed cover has the inserted bar, the inserted bar extends to the inside one end fixedly connected with deflector of fixed cover, the inside positioning spring that is provided with of fixed cover, positioning spring and deflector contact, the inserted bar is corresponding with the stopper, inserted bar and locating piece looks adaptation are favorable to making the inserted bar spacing to the locating piece to spacing cover is spacing.

Preferably, spacing spring bottom fixedly connected with riser, the riser run through the mount bottom and with mount sliding connection, riser bottom fixedly connected with bottom plate, bottom plate top fixedly connected with backing plate, needle tubing and bottom plate looks adaptation, riser top one side fixedly connected with guide block, the guide block run through the mount lateral wall and with mount sliding connection, be favorable to protecting the needle tubing.

Preferably, a moving block is fixedly connected to the rear side of the fixing frame, and a push rod is slidably connected to the inner portion of the sampling tube.

Preferably, fixed plate bottom fixedly connected with fixed spring, fixed spring bottom fixedly connected with clamp plate, the sampling tube outside fixedly connected with limiting plate, the clamp plate is with limiting plate looks adaptation, makes fixed spring promote the clamp plate to carry on spacingly to the limiting plate, carry on spacingly to the sampling tube.

The utility model provides a liquid sampling device of adaptable binary channels chromatograph, its beneficial effect who possesses as follows:

1. this liquid sampling device of adaptable binary channels chromatograph positioning spring extension promotes the deflector and removes, the deflector drives the peg graft pole and removes, the peg graft pole removes and carries out the joint to the locating piece, thereby carry on spacingly to the stop collar, make the stop collar carry on spacingly to the sampling tube, when the stop collar drives the push pedal and descends, the push pedal drives reset spring and lengthens, it is spacing to make reset spring carry out the inserted bar, be convenient for promote the push pedal and reset, be favorable to carrying out quick fixed mounting to the sampling tube, improve fixed effect, be favorable to buffering, stability when improving the operation.

2. This liquid sampling device bottom plate of adaptable binary channels chromatograph when removing sample bottle department, fixes the sample bottle to the riser extrudees spacing spring, and slides to the mount is inside, is favorable to leading to the needle tubing, and can fix the sample, improves stability, prevents that the needle tubing from buckling because of bumping, influences the detection.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a side sectional view of the fixing frame of the present invention;

fig. 3 is a side sectional view of the fixing sleeve of the present invention;

FIG. 4 is an enlarged view of the portion A of FIG. 2 according to the present invention;

fig. 5 is the structure schematic diagram of the limiting plate of the utility model.

In the figure: 1. a body; 2. a sample tray; 3. a sampling tube; 4. a fixed mount; 5. a fixing plate; 6. a fixed block; 7. a limiting spring; 8. a position limiting sleeve; 9. a needle tube; 10. a limiting plate; 11. pushing the plate; 12. a limiting block; 13. a rod is inserted; 14. a return spring; 15. fixing a sleeve; 16. a positioning spring; 17. a guide plate; 18. a plug-in rod; 19. a stabilizing sleeve; 20. a vertical plate; 21. a guide block; 22. positioning a block; 23. a base plate; 24. a moving block; 25. fixing the spring; 26. pressing a plate; 27. a limiting plate; 28. a push rod.

Detailed Description

The embodiment of the utility model provides a liquid sampling device of adaptable binary channels chromatograph.

Referring to fig. 1, 2, 3, 4 and 5, the device includes a body 1, a sample plate 2 and a sampling tube 3, a fixing frame 4 is disposed inside the body 1, the sampling tube 3 is disposed inside the fixing frame 4, the fixing frame 4 is fixedly connected to the top end of the fixing frame 4, a fixing block 6 is fixedly connected to one side of the bottom of the fixing block 5, a limiting spring 7 is fixedly connected to the bottom end of the fixing block 6, a limiting plate 10 is fixedly connected to one side of the bottom of the fixing frame 4, a limiting sleeve 8 is fixedly connected to the bottom end of the sampling tube 3, a positioning block 22 is fixedly connected to the rear side of the limiting sleeve 8, a needle tube 9 is fixedly connected to the inside of the limiting sleeve 8, the needle tube 9 is adapted to the limiting plate 10, a push plate 11 is fixedly connected to the top end of the limiting plate 10, the push plate 11 is adapted to the needle tube 9, a plurality of insertion rods 13 are fixedly connected to the bottom end of the needle tube 9, the insertion rods 13 penetrate through the limiting plate 10 and are slidably connected to the limiting plate 10, a limiting block 12 is fixedly connected to the top of the push plate 11, the needle tube 9 is favorably limited, the bottom end of the insertion rod 13 is fixedly connected with a baffle, the bottom end of the limiting plate 10 is fixedly connected with a return spring 14, and the return spring 14 is fixedly connected with the baffle, so that the insertion rod 13 and the push plate 11 are favorably limited.

The bottom end of one side of the fixed frame 4 is fixedly connected with a stabilizing sleeve 19, the stabilizing sleeve 19 is matched with the limiting sleeve 8, the bottom of the stabilizing sleeve 19 is fixedly connected with a fixed sleeve 15, the inside of the fixed sleeve 15 is slidably connected with an inserting rod 18, one end of the inserting rod 18 extending to the inside of the fixed sleeve 15 is fixedly connected with a guide plate 17, the inside of the fixed sleeve 15 is provided with a positioning spring 16, the positioning spring 16 is contacted with the guide plate 17, the inserting rod 18 corresponds to the limiting block 12, the inserting rod 18 is matched with a positioning block 22, the inserting rod 18 is favorable for limiting the positioning block 22, so as to limit the limiting sleeve 8, the bottom end of the limiting spring 7 is fixedly connected with a vertical plate 20, the vertical plate 20 penetrates through the bottom of the fixed frame 4 and is slidably connected with the fixed frame 4, the bottom end of the vertical plate 20 is fixedly connected with a bottom plate 23, the top of the bottom plate 23 is fixedly connected with a base plate, a needle tube 9 is matched with the bottom plate 23, one side of the top end of the vertical plate 20 is fixedly connected with a guide block 21, guide block 21 runs through 4 lateral walls of mount and with 4 sliding connection of mount, be favorable to protecting needle tubing 9, 4 rear side fixedly connected with movable blocks 24 of mount, 3 inside sliding connection of sampling tube has push rod 28, 5 bottom fixedly connected with fixing spring 25 of fixed plate, fixing spring 25 bottom fixedly connected with clamp plate 26, 3 outside fixedly connected with limiting plate 27 of sampling tube, clamp plate 26 and limiting plate 27 looks adaptations, make fixing spring 25 promote clamp plate 26, thereby it is spacing to carry out limiting plate 27, it is spacing to sampling tube 3.

Specifically, the pressing plate 26 is pulled upwards to enable the pressing plate 26 to drive the fixing spring 25 to contract, the fixing spring 25 contracts, the sampling tube 3 is placed in the fixing frame 4 to be pre-fixed, the limit sleeve 8 is clamped with the stabilizing sleeve 19, the needle tube 9 penetrates through the limit plate 10 and is matched with the limit plate 10, the fixing spring 25 is reset to press the pressing plate 26 downwards, the pressing plate 26 pushes the limit plate 27 to move downwards, the limit plate 27 drives the sampling tube 3 to move downwards, the limit sleeve 8 is driven to move downwards when the sampling tube 3 moves downwards, the limit sleeve 8 drives the positioning block 22 to descend, the positioning block 22 drives the limit block 12 to descend, the inserting rod 18 loses the limit, the positioning spring 16 extends to push the guide plate 17 to move, the guide plate 17 drives the inserting rod 18 to move, the inserting rod 18 moves to clamp the positioning block 22, so as to limit the limit sleeve 8, and enable the limit sleeve 8 to limit the sampling tube 3, when stop collar 8 drives push pedal 11 and descends, push pedal 11 drives reset spring 14 and lengthens, makes reset spring 14 carry on spacingly to inserted bar 13, is convenient for promote push pedal 11 and resets, is favorable to carrying out quick fixed mounting to sampling tube 3, improves fixed effect, is favorable to buffering, stability when improving the operation.

The movable block 24 can be fixed mount 4, make movable block 24 be connected with the moving mechanism output, thereby drive mount 4 and remove, be convenient for extract the sample, it removes to drive spacing spring 7 and riser 20 when mount 4 removes, riser 20 drives bottom plate 23 and removes, when bottom plate 23 removes sample bottle department, fix the sample bottle, and riser 20 extrudes spacing spring 7, and to the inside slip of mount 4, be favorable to leading to needle tubing 9, and can fix the sample, improve stability, prevent that needle tubing 9 from leading to buckling because of the collision, the influence detects.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Liquid sampling device of adaptable binary channels chromatograph, including organism (1), sample dish (2) and sampling tube (3), its characterized in that: organism (1) inside is provided with mount (4), sampling tube (3) set up inside mount (4), mount (4) top fixedly connected with fixed plate (5), fixed plate (5) bottom one side fixedly connected with fixed block (6), fixed block (6) bottom fixedly connected with spacing spring (7), mount (4) bottom one side fixedly connected with limiting plate (10), sampling tube (3) bottom fixedly connected with stop collar (8), stop collar (8) rear side fixedly connected with locating piece (22), the inside fixedly connected with needle tubing (9) of stop collar (8), needle tubing (9) and limiting plate (10) looks adaptation.

2. The liquid sample introduction device adaptable to a dual-channel chromatograph of claim 1, wherein: limiting plate (10) top fixedly connected with push pedal (11), push pedal (11) and needle tubing (9) looks adaptation, a plurality of inserted bars (13) of needle tubing (9) bottom fixedly connected with, inserted bar (13) run through limiting plate (10) and with limiting plate (10) sliding connection, push pedal (11) top fixedly connected with stopper (12).

3. The liquid sample introduction device adaptable to a dual-channel chromatograph of claim 2, wherein: the bottom end of the inserting rod (13) is fixedly connected with a baffle, the bottom end of the limiting plate (10) is fixedly connected with a return spring (14), and the return spring (14) is fixedly connected with the baffle.

4. The liquid sampling device adaptable to a dual-channel chromatograph according to claim 1, wherein: the utility model discloses a fixing frame, including mount (4), stabilizing sleeve (19) and stop collar (8), stabilizing sleeve (19) bottom fixedly connected with fixes cover (15), fixed cover (15) inside sliding connection has peg graft pole (18), peg graft pole (18) extend to fixed cover (15) inside one end fixedly connected with deflector (17), fixed cover (15) inside is provided with positioning spring (16), positioning spring (16) contact with deflector (17), peg graft pole (18) are corresponding with stopper (12), peg graft pole (18) and locating piece (22) looks adaptation.

5. The liquid sample introduction device adaptable to a dual-channel chromatograph of claim 1, wherein: spacing spring (7) bottom fixedly connected with riser (20), riser (20) run through mount (4) bottom and with mount (4) sliding connection, riser (20) bottom fixedly connected with bottom plate (23), bottom plate (23) top fixedly connected with backing plate, needle tubing (9) and bottom plate (23) looks adaptation, riser (20) top one side fixedly connected with guide block (21), guide block (21) run through mount (4) lateral wall and with mount (4) sliding connection.

6. The liquid sample introduction device adaptable to a dual-channel chromatograph of claim 1, wherein: the rear side of the fixing frame (4) is fixedly connected with a moving block (24), and a push rod (28) is connected in the sampling tube (3) in a sliding manner.

7. The liquid sample introduction device adaptable to a dual-channel chromatograph of claim 1, wherein: the sampling tube is characterized in that a fixing spring (25) is fixedly connected to the bottom of the fixing plate (5), a pressing plate (26) is fixedly connected to the bottom end of the fixing spring (25), a limiting plate (27) is fixedly connected to the outer side of the sampling tube (3), and the pressing plate (26) is matched with the limiting plate (27).