Soaking column oven of gas chromatograph

Abstract

The utility model provides a vapor chamber for a gas chromatograph, which relates to the technical field of gas chromatography and comprises a chamber main body, capillary chromatographic columns are arranged on the left side and the right side of the chamber main body through through holes, a fixed shell is fixedly connected to the bottom of the inner side of the chamber main body, a driving motor is mounted in the fixed shell, and the driving motor is connected with the capillary chromatographic columns through the through holes. The output end of the driving motor is fixedly connected with a rotating shaft, and the top end of the rotating shaft movably penetrates through the fixing shell. The constant-temperature electric heater is placed between the two clamping blocks, the driving motor is started to drive the rotating shaft to rotate, the rotating shaft drives the gear to rotate, the rack is in meshed connection with the gear, so that the sliding base is driven to slide in the sliding groove, the sliding base drives the connecting block to move, and the connecting block drives the movable plate to move. And therefore, the two clamping blocks are driven to move relatively, the constant-temperature electric heater is clamped and fixed, manual operation of a user is not needed, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas chromatography, in particular to a heat - equalizing column oven for a gas chromatograph. Background Technique

[0002] A gas chromatograph is an instrument that uses chromatographic separation technology and detection technology to qualitatively and quantitatively analyze complex mixtures of multiple components. It can usually be used to analyze organic compounds that are thermally stable and have a boiling point not exceeding 500 °C in soil, such as volatile organic compounds, organochlorines, organophosphorus, polycyclic aromatic hydrocarbons, phthalate esters, etc. The gas chromatograph injects samples through an injector, and the samples need to be separated into groups inside the capillary chromatographic column in an incubator, and finally sent to a detection device for detection.

[0003] For example, a heat - equalizing column oven for a gas chromatograph with Chinese patent application number CN202322865210.4 records in its specification that "The utility model relates to the technical field of gas chromatographs, in particular to a heat - equalizing column oven for a gas chromatograph, including a main body of the box. The left and right ends of the main body of the box are provided with capillary chromatographic columns through through - holes. The bottom end of the inner wall of the main body of the box is fixedly installed with a mounting plate. A chute is opened at the top end of the mounting plate. One end of the inner wall of the chute is connected to a fixing structure through a bearing. One end of the fixing structure is provided with a constant - temperature electric heater. A fixing block is fixedly installed on the top end of the mounting plate on the side far from the chute. Limiting grooves are opened on both sides of the top end of the mounting plate close to the chute. Limiting blocks are movably connected inside the limiting grooves. In the utility model, by setting the mounting plate, chute, fixing structure, constant - temperature electric heater, fixing block, reflector, control panel and heat - equalizing plate, the heat is released evenly, and it is convenient to install the constant - temperature electric heater, improving work efficiency and enhancing practicability."

[0004] During the use of the existing column oven, by setting the mounting plate, chute, fixing structure, constant - temperature electric heater, fixing block, reflector, control panel and heat - equalizing plate, it is convenient to release heat evenly. However, when fixing the constant - temperature electric heater, it requires manual operation by the user, thus reducing work efficiency and having a poor use effect. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem in the prior art that when fixing the constant - temperature electric heater, it requires manual operation by the user, thus reducing work efficiency, and to propose a heat - equalizing column oven for a gas chromatograph.

[0006] To achieve the above object, the utility model adopts the following technical solution: A gas chromatograph isothermal column oven, including a box body main body. Capillary chromatographic columns are provided on the left and right sides of the box body main body through through holes. A fixed shell is fixedly connected to the inner bottom of the box body main body. A driving motor is installed in the fixed shell. The output end of the driving motor is fixedly connected to a rotating shaft. The top end of the rotating shaft movably penetrates through the fixed shell. The top end of the rotating shaft is fixedly connected to a gear. A sliding groove is opened at the top of the fixed shell. A sliding seat is slidably connected in the sliding groove. A rack is arranged on one side of the sliding seat. The rack is meshed and connected with the gear. A connecting block is fixedly connected to one side of the sliding seat. A movable plate is fixedly connected to the top of the connecting block. A clamping block is fixedly connected to one side of the movable plate. A constant temperature electric heater is arranged inside the clamping block.

[0007] Preferably, an installation column is fixedly connected to the top of the fixed shell, and a heat sink plate is snap-fitted and installed on the top of the installation column.

[0008] Preferably, a receiving plate is fixedly connected to the top of the fixed shell, and a box door is arranged on the front side of the box body main body.

[0009] Preferably, a limiting groove is opened inside the box body main body, and an empty groove is opened inside the box door.

[0010] Preferably, a sliding plate is slidably connected in the empty groove, and a return spring is fixedly connected in the empty groove.

[0011] Preferably, a limiting block is fixedly connected to one side of the sliding plate, and one side of the limiting block movably penetrates through the empty groove and extends into the limiting groove.

[0012] Preferably, a through groove is opened inside the empty groove, a pulling plate is fixedly connected to the front side of the sliding plate, the pulling plate movably penetrates through the through groove, and a reflecting plate is fixedly connected to the inner top of the box body main body.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are as follows.

[0014] 1. In the utility model, by placing the constant temperature electric heater between the two clamping blocks and starting the driving motor, the driving motor drives the rotating shaft to rotate, the rotating shaft drives the gear to rotate. Since the rack is meshed and connected with the gear, the sliding seat is driven to slide in the sliding groove, the sliding seat drives the connecting block to move, the connecting block drives the movable plate to move, and thus the two clamping blocks move relatively, so as to clamp and fix the constant temperature electric heater. It does not require manual operation by the user, improving work efficiency.

[0015] 2. In the present utility model, by pulling the pull plate, the pull plate drives the sliding plate to slide in the empty slot, and the sliding plate drives the limiting block to move and separate from the limiting slot, thereby releasing the restriction on the box door. Subsequently, the box door can be easily opened by rotating it. At the same time, by pulling the pull plate, the sliding plate drives the limiting block to move into the empty slot, and the return spring starts to contract under the extrusion of the sliding plate. Then, the box door is closed, and the pull plate is released. Under the elastic force of the return spring, the limiting block is driven to squeeze into the limiting slot, facilitating the fixation of the box door. Brief Description of the Drawings

[0016] Figure 1 FIG. is a three-dimensional view of the main structure of a heat - equalizing column oven of a gas chromatograph proposed by the present utility model;

[0017] Figure 2 FIG. is a three - dimensional view of the heat - equalizing plate in a heat - equalizing column oven of a gas chromatograph proposed by the present utility model;

[0018] Figure 3 FIG. is a three - dimensional view of the constant - temperature electric heater in a heat - equalizing column oven of a gas chromatograph proposed by the present utility model;

[0019] Figure 4 FIG. is a three - dimensional view of the gear in a heat - equalizing column oven of a gas chromatograph proposed by the present utility model;

[0020] Figure 5 FIG. is a three - dimensional view of the sectional structure of the fixed shell in a heat - equalizing column oven of a gas chromatograph proposed by the present utility model;

[0021] Figure 6 FIG. is a three - dimensional view of the sectional structure of the box door in a heat - equalizing column oven of a gas chromatograph proposed by the present utility model;

[0022] Figure 7 FIG. is a three - dimensional view of the reflector in a heat - equalizing column oven of a gas chromatograph proposed by the present utility model. Legend Explanation: 1. Main body of the box; 2. Capillary chromatographic column; 3. Fixed shell; 4. Driving motor; 5. Rotating shaft; 6. Gear; 7. Slide groove; 8. Slide seat; 9. Rack; 10. Connecting block; 11. Movable plate; 12. Clamping block; 13. Constant - temperature electric heater; 14. Mounting column; 15. Heat - equalizing plate; 16. Bearing plate; 17. Box door; 18. Limiting slot; 19. Empty slot; 20. Sliding plate; 21. Return spring; 22. Limiting block; 23. Through - slot; 24. Pull plate; 25. Reflector. Detailed Embodiment

[0023] In order to more clearly understand the above - mentioned objects, features, and advantages of the present utility model, the present utility model will be further described below in conjunction with the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0024] In the following description, many specific details are set forth to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0025] Embodiment 1: As Figure 1 - Figure 7 shown, the present utility model provides a temperature - equalizing column oven for a gas chromatograph, including a box body main body 1. Capillary chromatographic columns 2 are provided on the left and right sides of the box body main body 1 through through - holes. A fixed shell 3 is fixedly connected to the inner bottom of the box body main body 1. A driving motor 4 is installed in the fixed shell 3. The output end of the driving motor 4 is fixedly connected to a rotating shaft 5. The top end of the rotating shaft 5 movably penetrates through the fixed shell 3. The top end of the rotating shaft 5 is fixedly connected to a gear 6. A sliding groove 7 is opened at the top of the fixed shell 3. A sliding seat 8 is slidably connected in the sliding groove 7. A rack 9 is arranged on one side of the sliding seat 8. The rack 9 is meshed with the gear 6. A connecting block 10 is fixedly connected to one side of the sliding seat 8. A movable plate 11 is fixedly connected to the top of the connecting block 10. A clamping block 12 is fixedly connected to one side of the movable plate 11. A constant - temperature electric heater 13 is arranged inside the clamping block 12.

[0026] The effect achieved by the entire Embodiment 1 is that by placing the constant - temperature electric heater 13 between the two clamping blocks 12 and starting the driving motor 4, the driving motor 4 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the gear 6 to rotate. Since the rack 9 is meshed with the gear 6, the sliding seat 8 is driven to slide in the sliding groove 7. The sliding seat 8 drives the connecting block 10 to move, and the connecting block 10 drives the movable plate 11 to move, thereby driving the two clamping blocks 12 to move relatively, and further clamping and fixing the constant - temperature electric heater 13, eliminating the need for manual operation by the user and improving work efficiency.

[0027] Embodiment 2: As Figure 1 - Figure 7 shown, a mounting post 14 is fixedly connected to the top of the fixed shell 3. A heat - sink plate 15 is snap - fitted and installed on the top of the mounting post 14. A receiving plate 16 is fixedly connected to the top of the fixed shell 3. A box door 17 is arranged on the front side of the box body main body 1. A limiting groove 18 is opened inside the box body main body 1. An empty groove 19 is opened inside the box door 17. A sliding plate 20 is slidably connected in the empty groove 19. A return spring 21 is fixedly connected in the empty groove 19. A limiting block 22 is fixedly connected to one side of the sliding plate 20. One side of the limiting block 22 movably penetrates through the empty groove 19 and extends into the limiting groove 18. A through - groove 23 is opened inside the empty groove 19. A pull plate 24 is fixedly connected to the front side of the sliding plate 20. The pull plate 24 movably penetrates through the through - groove 23. A reflecting plate 25 is fixedly connected to the inner top of the box body main body 1.

[0028] The effect achieved by the entire embodiment 2 is that the constant temperature electric heater 13 is turned on by the provided heat soaking plate 15, and the heat is evenly released with the cooperation of the heat soaking plate 15. The provided receiving plate 16 facilitates the placement of the constant temperature electric heater 13, and then by pulling the pull plate 24, the pull plate 24 drives the slide plate 20 to slide in the empty groove 19, and the slide plate 20 drives the limit block 22 to move and separate from the limit groove 18, thereby releasing the restriction on the box door 17, and then the box door 17 is conveniently opened by rotating the box door 17. At the same time, by pulling the pull plate 24, the slide plate 20 drives the limit block 22 to move into the empty groove 19, and the return spring 21 begins to shrink due to the compression of the slide plate 20, and then the box door 17 is closed, and then the pull plate 24 is released. Under the elastic force of the return spring 21, the limit block 22 is driven to squeeze into the limit groove 18, which is convenient for fixing the box door 17, and then through the provided reflector 25, the heat is reflected by the reflector 25, which is convenient for the interior of the box body 1 to be uniformly heated.

[0029] Working principle: When in use, pull the pull plate 24, so that the pull plate 24 drives the slide plate 20 to slide in the empty groove 19, and the slide plate 20 drives the limit block 22 to move and separate from the limit groove 18, thereby releasing the restriction on the box door 17, and then the box door 17 is opened by rotating the box door 17, and the constant temperature electric heater 13 is placed on the receiving plate 16 and located between the two clamping blocks 12, and the drive motor 4 is started, so that the drive motor 4 drives the rotating shaft 5 to rotate, and the rotating shaft 5 drives the gear 6 to rotate. Since the rack 9 is meshed with the gear 6, the slide seat 8 is driven to slide in the slide groove 7, and the slide seat 8 drives the connecting block 10 to move, and the connecting block 10 drives the movable plate 11 to move, thereby driving the two clamping blocks. The block 12 moves relatively, thereby clamping and fixing the constant temperature electric heater 13, and then the heat spreader 15 is snap-fitted and installed on the top of the mounting column 14, and then the pull plate 24 is pulled, so that the slide plate 20 drives the limit block 22 to move into the empty groove 19, and the return spring 21 begins to shrink due to the compression of the slide plate 20, and then the box door 17 is closed and the pull plate 24 is released. Under the elastic force of the return spring 21, the limit block 22 is driven to squeeze into the limit groove 18, and the box door 17 is fixed. By starting the constant temperature electric heater 13, the heat is evenly released with the cooperation of the heat spreader 15, and the heat is reflected by the reflector 25, so that the interior of the box body 1 is evenly heated, thereby improving the working efficiency.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A gas chromatograph isothermal column oven, comprising a box body main body (1), characterized in that: On the left and right sides of the box body (1), capillary chromatographic columns (2) are provided through through-holes. At the inner bottom of the box body (1), a fixed shell (3) is fixedly connected. A driving motor (4) is installed in the fixed shell (3). The output end of the driving motor (4) is fixedly connected to a rotating shaft (5). The top end of the rotating shaft (5) movably penetrates through the fixed shell (3). The top end of the rotating shaft (5) is fixedly connected to a gear (6). A chute (7) is opened at the top of the fixed shell (3). A sliding seat (8) is slidably connected in the chute (7). A rack (9) is arranged on one side of the sliding seat (8). The rack (9) is meshed with the gear (6). A connecting block (10) is fixedly connected to one side of the sliding seat (8). A movable plate (11) is fixedly connected to the top of the connecting block (10). A clamping block (12) is fixedly connected to one side of the movable plate (11). A constant-temperature electric heater (13) is arranged inside the clamping block (12).

2. The isothermal column oven of a gas chromatograph according to claim 1, characterized in that: An installation column (14) is fixedly connected to the top of the fixed shell (3). A heat sink (15) is snap-fitted and installed on the top of the installation column (14).

3. A homogenizing column oven of a gas chromatograph according to claim 1, characterized in that: A receiving plate (16) is fixedly connected to the top of the fixed shell (3). A box door (17) is arranged on the front side of the box body (1).

4. The isothermal column oven of a gas chromatograph according to claim 3, characterized in that: A limiting groove (18) is opened inside the box body (1). An empty groove (19) is opened inside the box door (17).

5. The isothermal column oven of a gas chromatograph according to claim 4, characterized in that: A sliding plate (20) is slidably connected in the empty groove (19). A return spring (21) is fixedly connected in the empty groove (19).

6. The isothermal column oven of a gas chromatograph according to claim 5, wherein: A limiting block (22) is fixedly connected to one side of the sliding plate (20). One side of the limiting block (22) movably penetrates through the empty groove (19) and extends into the limiting groove (18).

7. A homogenizing column oven of a gas chromatograph according to claim 5, characterized in that: A through groove (23) is opened inside the empty groove (19). A pulling plate (24) is fixedly connected to the front side of the sliding plate (20). The pulling plate (24) movably penetrates through the through groove (23). A reflecting plate (25) is fixedly connected to the inner top of the box body (1).

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