CN220854767U

CN220854767U - Sample clamping mechanism for gas chromatograph

Info

Publication number: CN220854767U
Application number: CN202322608149.5U
Authority: CN
Inventors: 胡文; 陈慢思
Original assignee: Euroland Analysis And Testing Technology Service Guangzhou Co ltd
Current assignee: Euroland Analysis And Testing Technology Service Guangzhou Co ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-04-26
Anticipated expiration: 2033-09-26

Abstract

The utility model discloses a sample clamping mechanism for a gas chromatograph, which comprises a sample clamping mechanism body, wherein one side of the upper end surface of the sample clamping mechanism body is fixedly arranged on a sample injector, a toothed ring is movably sleeved on the lower side of the outer surface of the sample injector, a sample placing box is fixedly arranged on one side of the outer surface of the toothed ring, and a row of sample grooves are arranged on the upper end surface of the sample placing box; the other side of the upper end surface of the sample clamping mechanism body is movably provided with a centrifugal ring, the outer side of the upper end surface of the centrifugal ring is provided with a circle of sample bottles, a square metal block fixed with the sample injector is arranged above the sample bottle closest to the sample injector, the upper side inside the square metal block is provided with a sliding rail, one side of the outer surface of the sliding rail is provided with an electric sliding block, and the lower end surface of the electric sliding block is fixedly provided with a cylindrical metal block. The utility model can automatically put the sample reagent bottle mixed on the eccentric ring into the sample groove on the outer surface of the sample placing box, so that the sample reagent bottle does not need to be manually replaced, thereby improving the degree of automation of the device.

Description

Sample clamping mechanism for gas chromatograph

Technical Field

The utility model relates to the technical field of clamping, in particular to a sample clamping mechanism for a gas chromatograph.

Background

The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a complex mixture of multiple components by utilizing chromatographic separation technology and detection technology, and can be generally used for analyzing organic matters which are thermally stable in soil and have boiling points not exceeding 500 ℃, such as volatile organic matters, organic chlorine, organic phosphorus, polycyclic aromatic hydrocarbon, titanate and the like, raw materials of the mixture are required to be injected into a sample reagent bottle before the gas chromatograph is used, the raw materials are required to be placed on an eccentric ring on the gas chromatograph, and the gas chromatograph is mixed, after the mixing is completed, the raw materials are required to be taken out one by one, the raw materials are required to be placed in a sample groove on a sample placing box below a sample injector, then sample reagents in the sample reagent bottle are extracted through the sample injector, and the sample placing box and the eccentric ring for loading the reagents used in the process can be collectively called a sample clamping mechanism for the gas chromatograph;

The existing sample clamping mechanism for the gas chromatograph has the advantages that the injection of samples is not definitely divided, the same injector or the injection pipe is adopted for injection, only one sample can be supplied, when other samples are required to be injected, the injector or the injection pipe is required to be cleaned, the problem that the samples are left after the last time is avoided, inconvenience exists in use and the gas chromatograph is not fast and convenient to use is caused, the multifunctional gas chromatograph in the prior art CN219104831U can be used for completing the basic work of gas chromatograph analysis, a plurality of sample injection pipes are also arranged, multiple samples can be injected into the gas chromatograph in a separated mode under the condition that the sample injection pipes are not replaced, the problem of mutual pollution can not occur, the frequent replacement and cleaning of the sample injection pipes are not required, the gas chromatograph can be fast put into use, and the problems are solved.

However, when using such a sample clamping mechanism for gas chromatograph, it is necessary to manually place the mixed sample reagent bottles on the centrifugal ring one by one into the inside of the sample tank on the placement box, which has a low degree of automation; therefore, the existing requirements are not met, and a sample clamping mechanism for a gas chromatograph is provided.

Disclosure of utility model

The utility model aims to provide a sample clamping mechanism for a gas chromatograph, which solves the problems that in the prior art, when the sample clamping mechanism for the gas chromatograph is used, the mixed sample reagent bottles on the centrifugal ring are manually placed in the sample groove on the placing box, and the degree of automation is low.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the sample clamping mechanism for the gas chromatograph comprises a sample clamping mechanism body, wherein one side of the upper end surface of the sample clamping mechanism body is fixedly arranged on a sample injector, a toothed ring is movably sleeved on the lower side of the outer surface of the sample injector, a sample placing box is fixedly arranged on one side of the outer surface of the toothed ring, and a row of sample grooves are formed in the upper end surface of the sample placing box;

The other side of the upper end surface of the sample clamping mechanism body is movably provided with a centrifugal ring, the outer side of the upper end surface of the centrifugal ring is provided with a circle of sample bottles, a square metal block fixed with the sample injector is arranged above the sample bottle closest to the sample injector, the upper side of the inside of the square metal block is provided with a sliding rail, the electric sliding block is installed on one side of the outer surface of the sliding rail, a cylindrical metal block is fixedly arranged on the lower end face of the electric sliding block, a lifting block is movably inserted in the cylindrical metal block, and a fixing clamp is installed on four end angles, close to the lower end face, of the outer surface of the lifting block through rotating shafts.

Preferably, the toothed ring is meshed with a toothed column, the axle center of the toothed column is connected with a motor rotating shaft, and the top end of the motor rotating shaft is connected with a position adjusting motor.

Preferably, a horizontal bar cylinder is arranged at the middle position inside the cylindrical metal block, and a telescopic push rod on the horizontal bar cylinder is fixed with the lifting block.

Preferably, the inside downside fixed mounting of lifter has the centre gripping motor, the output shaft of centre gripping motor has a threaded rod through the shaft coupling, just link to each other through roller bearing between the bottom of threaded rod and the inner wall of lifter.

Preferably, the upper side cover of threaded rod surface is equipped with the internal thread cover that links to each other with its screw thread, the upside of terminal surface is all fixed around the internal thread cover is equipped with a push rod, and two the lower terminal surface of push rod is fixed to be equipped with one and is located four simultaneously the metal ring of fixation clamp top, just the surface that the metal ring is towards the fixation clamp is the inclined plane.

Preferably, the four end angles above the metal ring are respectively provided with a short rod positioned on the outer surface of the lifting block, the outer surface of the short rod is sleeved with a spring, the top end of the spring is connected with a metal sleeve which is sleeved on the outer surface of the short rod in the same way, a connecting rod is arranged between the metal sleeve and the fixing clamp, and two ends of the connecting rod are respectively connected with the fixing clamp and the metal sleeve through rotating shafts.

Compared with the prior art, the utility model has the beneficial effects that:

According to the utility model, the sample bottle can be automatically fixed by the four fixing clamps positioned above the sample bottle closest to the sample injector, the sample bottle can be pulled out from the outer surface of the sample bottle, and the pulled sample reagent bottle can be placed into the sample groove positioned on the outer surface of the sample placing box by the electric sliding block, so that the device can automatically feed, and the degree of automation of the device is increased.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is an overall side view of the front face of the present utility model;

FIG. 3 is an enlarged view of the structure of FIG. 2B in accordance with the present utility model;

fig. 4 is a front view of the internal structure of fig. 1 a according to the present utility model.

In the figure: 1. a sample clamping mechanism body; 2. a centrifugal ring; 3. a sample bottle; 4. a sample placement cartridge; 5. a sample tank; 6. a toothed ring; 7. tooth columns; 8. a motor shaft; 9. a position adjustment motor; 10. square metal blocks; 11. a slide rail; 12. an electric slide block; 13. a cylindrical metal block; 14. a lifting block; 15. a horizontal bar cylinder; 16. a fixing clamp; 17. a threaded rod; 18. a connecting rod; 19. a short bar; 20. a metal sleeve; 21. a spring; 22. a sample injector; 23. an internal thread sleeve; 24. a metal ring; 25. a push rod; 26. clamping the motor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

The sample bottle 3 (model B-006401), the position-adjusting motor 9 (model YL9 OL-2) and the spring 21 (model JX 110) mentioned in the present utility model are available from market purchase or private customization.

Referring to fig. 1 to 4, an embodiment of the present utility model provides: the sample clamping mechanism for the gas chromatograph comprises a sample clamping mechanism body 1, wherein one side of the upper end surface of the sample clamping mechanism body 1 is fixedly arranged on a sample injector 22, a toothed ring 6 is movably sleeved on the lower side of the outer surface of the sample injector 22, a sample placing box 4 is fixedly arranged on one side of the outer surface of the toothed ring 6, and a row of sample grooves 5 are arranged on the upper end surface of the sample placing box 4;

The other side of the upper end surface of the sample clamping mechanism body 1 is movably provided with a centrifugal ring 2, the outer side of the upper end surface of the centrifugal ring 2 is provided with a circle of sample bottles 3, a square metal block 10 fixed with the sample injector 22 is arranged above the sample bottle 3 closest to the sample injector 22, the upper side of the inside of the square metal block 10 is provided with a sliding rail 11, one side of the outer surface of the sliding rail 11 is provided with an electric sliding block 12, the lower end surface of the electric sliding block 12 is fixedly provided with a cylindrical metal block 13, the inside of the cylindrical metal block 13 is movably inserted with a lifting block 14, and four end angles of the outer surface of the lifting block 14, which are close to the lower end surface position, are provided with a fixing clamp 16 through rotating shafts;

When in use, the sample materials injected into the sample bottle 3 can be mixed by connecting the power supply and the centrifugal ring 2.

The toothed ring 6 is meshed with the toothed column 7, the axle center of the toothed column 7 is connected with a motor rotating shaft 8, the top end of the motor rotating shaft 8 is connected with a position adjusting motor 9, the motor rotating shaft 8 connected with the toothed ring 7 can be driven to rotate through the position adjusting motor 9, the toothed column 7 fixedly sleeved on the outer surface of the motor rotating shaft 8 can rotate along with the motor rotating shaft 8, the toothed ring 6 meshed with the toothed column 7 can rotate along with the motor rotating shaft when the toothed column 7 rotates, the sample placing box 4 fixedly connected with the toothed ring 6 rotates along with the toothed column, and the sample groove 5 positioned on the outer surface of the sample placing box 4 can be adjusted to one side of the sample bottle 3 closest to the sample injector 22 through the rotating structure.

A horizontal bar cylinder 15 is arranged in the middle position inside the cylindrical metal block 13, and a telescopic push rod on the horizontal bar cylinder 15 is fixed with the lifting block 14; the lifting block 14 can be pushed down by the horizontal bar cylinder 15, and the lower end surface of the lifting block 14 will contact the upper end surface of the sample bottle 3 closest to the sample injector 22 as the lifting block 14 descends.

The lower side of the inside of the lifting block 14 is fixedly provided with a clamping motor 26, an output shaft of the clamping motor 26 is connected with a threaded rod 17 through a coupler, the bottom end of the threaded rod 17 is connected with the inner wall of the lifting block 14 through a roller bearing, and the threaded rod 17 connected with the clamping motor 26 can be driven to rotate through the clamping motor 26.

An inner thread sleeve 23 connected with the screw thread is sleeved on the upper side of the outer surface of the threaded rod 17, a push rod 25 is fixedly arranged on the upper sides of the front end surface and the rear end surface of the inner thread sleeve 23, a metal ring 24 which is simultaneously positioned above the four fixing clamps 16 is fixedly arranged on the lower end surfaces of the two push rods 25, the surface of the metal ring 24 facing the fixing clamps 16 is an inclined surface, when the threaded rod 17 rotates, the inner thread sleeve 23 which is sleeved on the outer surface of the threaded rod 17 and connected with the screw thread but cannot rotate can move up and down on the outer surface of the threaded rod 17, the two push rods 25 fixed with the inner thread sleeve 23 can descend along with the inner thread sleeve, the metal ring 24 positioned on the lower end surfaces of the two push rods 25 descends along with the descending of the two push rods 25, and can contact the four fixing clamps 16 positioned below the metal ring 24 along with the descending of the metal ring 24, the fixing clamp 16 can be changed into a vertical state by pushing the metal ring 24, the top end bracket is clamped on the lower end surface of the top cover of the sample bottle 3, so that the sample bottle 3 is fixed, then the lifting block 14 and the sample bottle 3 fixed by the four fixing clamps 16 positioned on the outer surface of the lifting block 14 can be pulled out by a horizontal bar cylinder 15 arranged in the cylindrical metal block 13, the pulled-out sample bottle 3 is driven to move by an electric sliding block 12 fixed between the lifting block 14 and the cylindrical metal block 13 to be adjusted to the upper part of the sample tank 5, the sample bottle 3 is pushed downwards by the horizontal bar cylinder 15 to enter the inside of the sample tank 5, after the sample bottle 3 completely enters the inside of the sample tank 5, the threaded rod 17 is reversely rotated by a sample injector 22, so that the fixation of the sample bottle 3 is released, after that, the fixing clamp 16 is pulled upwards through the horizontal bar cylinder 15, the fixing clamp 16 is moved to the original position, in the process, the centrifugal ring 2 is rotated again, a new sample bottle 3 is moved to the lower part of the fixing clamp 16, and then the operation is circulated, so that the sample bottle 3 positioned on the outer surface of the centrifugal ring 2 can be automatically placed in the sample groove 5 through the technical scheme, and the automation degree of equipment is improved.

The four end angles above the metal ring 24 are respectively provided with a short rod 19 positioned on the outer surface of the lifting block 14, the outer surface of the short rod 19 is sleeved with a spring 21, the top end of the spring 21 is connected with a metal sleeve 20 which is sleeved on the outer surface of the short rod 19, a connecting rod 18 is arranged between the metal sleeve 20 and the fixing clamp 16, two ends of the connecting rod 18 are respectively connected with the fixing clamp 16 and the metal sleeve 20 through rotating shafts, when the fixing clamp 16 is pushed and gradually becomes parallel, the metal sleeve 20 connected with the connecting rod 18 descends along with the fixing clamp 16, when the metal sleeve 20 descends, the spring 21 is extruded, when the injector 22 reversely rotates and the internal thread sleeve 23 ascends, after the force for extruding the fixing clamp 16 disappears, the four fixing clamps 16 can be pushed back to the original positions through the reactive force of the extruded metal sleeve 20.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a gas chromatograph uses sample clamping mechanism, includes sample clamping mechanism body (1), its characterized in that: one side of the upper end face of the sample clamping mechanism body (1) is fixedly arranged on a sample injector (22), a toothed ring (6) is movably sleeved on the lower side of the outer surface of the sample injector (22), a sample placement box (4) is fixedly arranged on one side of the outer surface of the toothed ring (6), and a row of sample grooves (5) are formed in the upper end face of the sample placement box (4);

The utility model discloses a sample clamping mechanism, including sample clamping mechanism body (1), sample clamping mechanism body, including sample clamping mechanism body, lifting block, fixed clamp (16) are all installed through the pivot to the opposite side movable mounting of sample clamping mechanism body (1) up end has centrifugal ring (2), the outside of centrifugal ring (2) up end is equipped with round sample bottle (3), and is closest to the top of sample bottle (3) of injector (22) is equipped with square metal piece (10) fixed mutually between sample injector (22), square metal piece (10) inside upside is equipped with slide rail (11), electronic slider (12) are installed to one side of slide rail (11) surface, the lower terminal surface of electronic slider (12) is fixed and is equipped with cylindrical metal piece (13), lifting block (14) are inserted to the inside activity of cylindrical metal piece (13), four terminal angles that the surface of lifting block (14) are close to lower terminal surface position.

2. The sample clamping mechanism for a gas chromatograph according to claim 1, wherein: the gear ring (6) is meshed with a gear column (7), the axle center of the gear column (7) is connected with a motor rotating shaft (8), and the top end of the motor rotating shaft (8) is connected with a position adjusting motor (9).

3. The sample clamping mechanism for a gas chromatograph according to claim 1, wherein: a horizontal bar air cylinder (15) is arranged at the middle position inside the cylindrical metal block (13), and a telescopic push rod on the horizontal bar air cylinder (15) is fixed with the lifting block (14).

4. The sample clamping mechanism for a gas chromatograph according to claim 1, wherein: the lifting block is characterized in that a clamping motor (26) is fixedly arranged at the lower side of the inside of the lifting block (14), an output shaft of the clamping motor (26) is connected with a threaded rod (17) through a coupler, and the bottom end of the threaded rod (17) is connected with the inner wall of the lifting block (14) through a roller bearing.

5. The sample clamping mechanism for a gas chromatograph according to claim 4, wherein: the upper side cover of threaded rod (17) surface is equipped with one and screw thread continuous internal thread cover (23) with it, the upside of terminal surface all is fixed around internal thread cover (23) is equipped with a push rod (25), and two the lower terminal surface of push rod (25) is fixed to be equipped with one and is located four simultaneously metal ring (24) of fixation clamp (16) top, just the face of metal ring (24) orientation fixation clamp (16) is the inclined plane.

6. The sample clamping mechanism for a gas chromatograph according to claim 5, wherein: four end angles of metal ring (24) top all are equipped with a quarter butt (19) that are located lifter (14) surface, the surface cover of quarter butt (19) is equipped with spring (21), the top of spring (21) is connected with one and overlaps metal sheath (20) of locating quarter butt (19) surface equally, be equipped with a connecting rod (18) between metal sheath (20) and fixation clamp (16), just link to each other through the pivot between both ends of connecting rod (18) and fixation clamp (16) and metal sheath (20) respectively.