High-efficiency sampling device of gas chromatograph

Abstract

The utility model discloses a high-efficiency sample introduction device of a gas chromatograph, which relates to the technical field of gas chromatographs and comprises a gas chromatograph body, the outer surface of the upper end of the gas chromatograph body is detachably connected with a sample introduction mechanism and a moving mechanism, the sample introduction mechanism is located on one side of the moving mechanism, and the moving mechanism is located on the other side of the gas chromatograph body. A transverse carrying plate is arranged on the outer surface of the upper end of the moving mechanism, a first rotating motor and electric push rods are arranged in the middle of the transverse carrying plate, and the electric push rods are located on the two sides of the first rotating motor. According to the high-efficiency sample injection device of the gas chromatograph, the arranged moving mechanism can be used for conveniently adjusting the position of the transverse support plate when in use, so that the transverse support plate can conveniently drive the sample conveying support plate to move, and the sample conveying support plate can be driven by the first rotating motor to rotate; the positions of the two groups of sample carrying discs above the sample conveying carrying plate can be conveniently converted, the sample carrying discs can conveniently and alternately convey samples, and the sample injection efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of gas chromatography technology, specifically to a high-efficiency sample injection device for gas chromatography. Background Technology

[0002] Gas chromatographs are instruments that use chromatographic separation and detection techniques to perform qualitative and quantitative analysis on complex mixtures of multiple components. There are many types of gas chromatographs with different functions, but their basic structures are similar. A gas chromatograph generally consists of a gas path system, an injection system, a separation system (chromatographic column system), a detection and temperature control system, and a recording system. However, the injection devices in existing gas chromatographs have certain inconveniences in use.

[0003] First, existing sample delivery devices typically deliver samples at a single station, which makes it inconvenient to replace used samples or fill in new samples, resulting in low sample delivery efficiency.

[0004] Secondly, when using existing sample injection devices, samples are usually stored in sample glass bottles, which are then placed on a sample delivery tray for numbering and delivery. However, when the delivery is complete, it is not easy to detach the sample glass bottles from the sample delivery tray.

[0005] Therefore, we propose a high-efficiency sample introduction device for gas chromatographs. Utility Model Content

[0006] The main objective of this invention is to provide a high-efficiency sample injection device for gas chromatographs, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-efficiency sample injection device for a gas chromatograph, comprising a gas chromatograph body, wherein an injection mechanism and a moving mechanism are detachably connected to the upper outer surface of the gas chromatograph body, the injection mechanism is located on one side of the moving mechanism, a horizontal carrier plate is provided on the upper outer surface of the moving mechanism, a first rotary motor and an electric push rod are provided in the middle of the horizontal carrier plate, the electric push rod is located on both sides of the first rotary motor, a sample delivery carrier plate is provided above the first rotary motor, a top plate is detachably connected to the outer surface of one end of the electric push rod, a second rotary motor is detachably connected to the lower outer surface of the sample delivery carrier plate, a sample tray is provided above the sample delivery carrier plate, a sample hole is provided in the middle of the sample tray, and a retaining ring is fixedly connected to the inner wall of the sample hole.

[0008] Preferably, the front outer surface of the gas chromatograph body is provided with an organic cover and a controller, the organic cover is located on one side of the controller, the front outer surface of the injection mechanism is provided with a sampling head, a lifting slide is provided between the injection mechanism and the sampling head, and a sampling needle is detachably connected to the lower outer surface of the sampling head.

[0009] Preferably, a drive motor is detachably connected to one end of the outer surface of the moving mechanism, an auxiliary slide groove and a central guide groove are provided in the middle of the moving mechanism, the auxiliary slide groove is located on both sides of the central guide groove, and a lead screw is detachably connected to one end of the outer surface of the drive motor.

[0010] Preferably, an auxiliary slider and a driving block are fixedly connected to the lower outer surface of the horizontal carrier plate, the auxiliary slider is located on both sides of the driving block, and a wire hole is provided in the middle of the driving block.

[0011] Preferably, the output end of the first rotary motor is detachably connected to the lower outer surface of the sample carrier plate, the sample carrier plate has an L-shaped structure, and the output end of the second rotary motor is detachably connected to the lower outer surface of the sample tray.

[0012] Preferably, the moving mechanism, the auxiliary slide, and the central guide groove are integrally formed, and the lead screw is threadedly connected to the drive block through a threaded hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The movable mechanism allows for easy adjustment of the position of the horizontal carrier plate during use, facilitating the movement of the sample delivery plate driven by the horizontal carrier plate. The sample delivery plate can rotate under the drive of the first rotary motor, facilitating the switching of the positions of the two sets of sample trays above the sample delivery plate. This allows the sample trays to alternately transport samples, improving sample injection efficiency. The electric push rod can move the top plate upwards during use, allowing the top plate to push the sample glass bottle container out of the sample hole, making it easy to remove the sample glass bottle container. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a top view of the moving mechanism of this utility model;

[0017] Figure 3 This is a structural diagram of the horizontally placed carrier plate of this utility model;

[0018] Figure 4 This is a structural diagram of the sample carrier plate of this utility model.

[0019] In the diagram: 1. Gas chromatograph body; 2. Cover; 3. Controller; 4. Sample injection mechanism; 5. Moving mechanism; 6. Sampling head; 7. Lifting slide; 8. Sampling needle; 9. Horizontal carrier plate; 10. Drive motor; 11. Auxiliary slide; 12. Central guide groove; 13. Lead screw; 14. First rotary motor; 15. Sample carrier plate; 16. Second rotary motor; 17. Sample tray; 18. Electric push rod; 19. Top plate; 20. Auxiliary slider; 21. Drive block; 22. Wire hole; 23. Sample hole; 24. Retaining ring. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-4 As shown in the figure, a high-efficiency sample injection device for a gas chromatograph provided by this utility model includes a gas chromatograph body 1. The upper outer surface of the gas chromatograph body 1 is detachably connected to an injection mechanism 4 and a moving mechanism 5. The injection mechanism 4 is located on one side of the moving mechanism 5. A horizontal carrier plate 9 is provided on the upper outer surface of the moving mechanism 5. A first rotary motor 14 and an electric push rod 18 are provided in the middle of the horizontal carrier plate 9. The electric push rod 18 is located on both sides of the first rotary motor 14. A sample delivery carrier plate 15 is provided above the first rotary motor 14. A top plate 19 is detachably connected to the outer surface of one end of the electric push rod 18. A second rotary motor 16 is detachably connected to the lower outer surface of the sample delivery carrier plate 15. A sample tray 17 is provided above the sample delivery carrier plate 15. A sample hole 23 is provided in the middle of the sample tray 17. A retaining ring 24 is fixedly connected to the inner wall of the sample hole 23.

[0022] Specifically, in this embodiment, a gas chromatograph body 1 is included. The upper outer surface of the gas chromatograph body 1 is detachably connected to an injection mechanism 4 and a moving mechanism 5. During use, the moving mechanism 5 allows for easy adjustment of the position of the horizontal carrier plate 9, facilitating the movement of the sample delivery carrier plate 15 driven by the horizontal carrier plate 9. The sample delivery carrier plate 15 can rotate under the drive of the first rotary motor 14, facilitating the switching of the positions of the two sets of sample trays 17 above the sample delivery carrier plate 15. This allows the sample trays 17 to alternately deliver samples, improving injection efficiency. The injection mechanism 4 is located on one side of the moving mechanism 5. The upper outer surface of the moving mechanism 5 is provided with the horizontal carrier plate 9, and the middle of the horizontal carrier plate 9 is provided with a first... A rotary motor 14 and an electric push rod 18 are provided. The electric push rod 18 is located on both sides of the first rotary motor 14. A sample feeding plate 15 is provided above the first rotary motor 14. A top plate 19 is detachably connected to the outer surface of one end of the electric push rod 18. A second rotary motor 16 is detachably connected to the outer surface of the lower end of the sample feeding plate 15. A sample tray 17 is provided above the sample feeding plate 15. A sample hole 23 is provided in the middle of the sample tray 17. A retaining ring 24 is fixedly connected to the inner wall of the sample hole 23. When in use, the electric push rod 18 can drive the top plate 19 to move upward, so that the top plate 19 can push the sample glass bottle container out of the sample hole 23, making it convenient to remove the sample glass bottle container.

[0023] This utility model provides a high-efficiency sample injection device for a gas chromatograph. The moving mechanism 5 allows for easy adjustment of the position of the horizontal carrier plate 9 during use, facilitating the movement of the sample delivery carrier plate 15 driven by the horizontal carrier plate 9. The sample delivery carrier plate 15 can rotate under the drive of the first rotary motor 14, which facilitates the switching of the positions of the two sets of sample trays 17 above the sample delivery carrier plate 15. This allows the sample trays 17 to alternately transport samples, thereby improving the sample injection efficiency.

[0024] In one embodiment of this utility model, a cover 2 and a controller 3 are provided on the front outer surface of the gas chromatograph body 1. The cover 2 is located on one side of the controller 3. A sampling head 6 is provided on the front outer surface of the injection mechanism 4. A lifting slide 7 is provided between the injection mechanism 4 and the sampling head 6. A sampling needle 8 is detachably connected to the lower outer surface of the sampling head 6. When in use, the injection mechanism 4 can easily adjust the sampling head 6 to move up and down, so that the sampling head 6 can easily complete the injection through the sampling needle 8.

[0025] In another embodiment of this utility model, a drive motor 10 is detachably connected to the outer surface of one end of the moving mechanism 5. An auxiliary slide groove 11 and a central guide groove 12 are provided in the middle of the moving mechanism 5. The auxiliary slide groove 11 is located on both sides of the central guide groove 12. A lead screw 13 is detachably connected to the outer surface of one end of the drive motor 10. When in use, the drive motor 10 can drive the lead screw 13 to rotate in both directions, so that the lead screw 13 can drive the drive block 21 to move back and forth through the rotation, thereby enabling the drive block 21 to move the transverse carrier plate 9.

[0026] In another embodiment of this utility model, an auxiliary slider 20 and a driving block 21 are fixedly connected to the lower outer surface of the horizontal carrier plate 9. The auxiliary slider 20 is located on both sides of the driving block 21, and a threaded hole 22 is provided in the middle of the driving block 21. When in use, the horizontal carrier plate 9 can be inserted into the auxiliary slide groove 11 through the auxiliary slider 20, so that the driving block 21 can be inserted into the central guide groove 12, and the lead screw 13 can pass through the driving block 21 through the threaded hole 22.

[0027] In one embodiment of this utility model, the output end of the first rotary motor 14 is detachably connected to the lower outer surface of the sample feeding plate 15, which has an L-shaped structure. The output end of the second rotary motor 16 is detachably connected to the lower outer surface of the sample tray 17. The L-shaped sample feeding plate 15 facilitates the switching of the positions of the two sample trays 17.

[0028] In another embodiment of this utility model, the moving mechanism 5, the auxiliary slide 11, and the central guide groove 12 are integrally formed. The lead screw 13 is threadedly connected to the drive block 21 through the thread hole 22. The auxiliary slide 11 is mainly used to guide the auxiliary slider 20, which can facilitate the movement of the horizontally placed carrier plate 9 by the auxiliary slider 20.

[0029] It should be noted that this utility model is a high-efficiency sample injection device for a gas chromatograph. In use, the sample glass vial is placed into the sample port 23, and the port of the sample glass vial is blocked and limited by the retaining ring 24. At this time, the drive motor 10 can be started, causing the lead screw 13 to rotate forward and backward. The lead screw 13, through these rotations, drives the drive block 21 to reciprocate, thereby causing the drive block 21 to move the horizontal carrier plate 9. The horizontal carrier plate 9 then transports one set of sample trays 17 to the area below the sampling head 6. At this time, the sampling head 6, driven by the injection mechanism 4, descends along the lifting slide 7, allowing the sampling needle 8 to be inserted into the sample glass vial. Sampling is performed to complete the sample injection. Then, the second rotary motor 16 can be started to drive the sample tray 17 to rotate, which facilitates the rotation and injection of the sample glass bottle container on the sample tray 17. After one set of sample trays 17 has completed the injection, the first rotary motor 14 can be started to drive the sample delivery plate 15 to rotate, which facilitates the switching of the positions of the two sets of sample trays 17 above the sample delivery plate 15, and allows the sample trays 17 to alternately transport the sample. After being transported, the sample tray 17 is now below the electric push rod 18. The electric push rod 18 can drive the top plate 19 to move upward, so that the top plate 19 pushes the sample glass bottle container out of the sample hole 23, which is convenient for removing the sample glass bottle container and is quite practical.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency sample injection device for a gas chromatograph, comprising a gas chromatograph body (1), characterized in that: The upper outer surface of the gas chromatograph body (1) is detachably connected to an injection mechanism (4) and a moving mechanism (5). The injection mechanism (4) is located on one side of the moving mechanism (5). The upper outer surface of the moving mechanism (5) is provided with a horizontal carrier plate (9). The middle part of the horizontal carrier plate (9) is provided with a first rotary motor (14) and an electric push rod (18). The electric push rod (18) is located on both sides of the first rotary motor (14). The upper part of the first rotary motor (14) is provided with a sample delivery carrier plate (15). One end of the electric push rod (18) is detachably connected to a top plate (19). The lower outer surface of the sample delivery carrier plate (15) is detachably connected to a second rotary motor (16). The upper part of the sample delivery carrier plate (15) is provided with a sample tray (17). The middle part of the sample tray (17) is provided with a sample hole (23). The inner wall of the sample hole (23) is fixedly connected with a retaining ring (24).

2. The high-efficiency sample injection device for a gas chromatograph according to claim 1, characterized in that: The front outer surface of the gas chromatograph body (1) is provided with an organic cover (2) and a controller (3). The organic cover (2) is located on one side of the controller (3). The front outer surface of the injection mechanism (4) is provided with a sampling head (6). A lifting slide (7) is provided between the injection mechanism (4) and the sampling head (6). A sampling needle (8) is detachably connected to the lower outer surface of the sampling head (6).

3. The high-efficiency sample injection device for a gas chromatograph according to claim 1, characterized in that: One end of the moving mechanism (5) is detachably connected to a drive motor (10). The middle part of the moving mechanism (5) is provided with an auxiliary slide groove (11) and a central guide groove (12). The auxiliary slide groove (11) is located on both sides of the central guide groove (12). One end of the drive motor (10) is detachably connected to a lead screw (13).

4. The high-efficiency sample injection device for a gas chromatograph according to claim 1, characterized in that: An auxiliary slider (20) and a driving block (21) are fixedly connected to the lower outer surface of the horizontal carrier plate (9). The auxiliary slider (20) is located on both sides of the driving block (21), and a wire hole (22) is provided in the middle of the driving block (21).

5. A high-efficiency sample injection device for a gas chromatograph according to claim 1, characterized in that: The output end of the first rotary motor (14) is detachably connected to the lower outer surface of the sample carrier plate (15), which has an L-shaped structure. The output end of the second rotary motor (16) is detachably connected to the lower outer surface of the sample tray (17).

6. A high-efficiency sample injection device for a gas chromatograph according to claim 3, characterized in that: The moving mechanism (5) is integrally formed with the auxiliary slide (11) and the central guide groove (12), and the lead screw (13) is threadedly connected to the drive block (21) through the thread hole (22).

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