Sample injector of gas chromatograph

Abstract

The utility model discloses a gas chromatograph sample injector which comprises a gas chromatograph body, a sampling box, a sampling mechanism, a sample injection mechanism, a sample injection disc, a sample sending assembly and a detection hole, the sampling box is connected to the gas chromatograph body in a sliding mode, the sampling mechanism is installed at the top end of the gas chromatograph body, the sample injection mechanism is installed on the gas chromatograph body, and the sample sending assembly is installed on the gas chromatograph body. The sample introduction disc is fixedly connected to the outer wall of the gas chromatograph body, the sample sending assembly is installed on the sample introduction disc, the multiple detection holes are formed in the gas chromatograph body, and before the gas chromatograph detects samples, the multiple samples are contained in a glass bottle provided with a rubber plug. During detection, a glass bottle is fed into a gas chromatograph through a sample feeder, and a sample feeder in the prior art can only feed one glass bottle at one time and can feed the next sample after one sample is detected, so that the problem that the sample feeding efficiency is relatively low exists.

Description

Technical Field

[0001] The utility model relates to the technical field of sample injectors, in particular to a sample injector for a gas chromatograph. Background Art

[0002] The sampler is a device that delivers samples into the detection instrument. The gas chromatograph is an instrument that uses chromatographic separation technology and detection technology to perform qualitative and quantitative analysis on complex mixtures of multiple components. Before the gas chromatograph detects the samples, multiple samples are placed in glass bottles with rubber stoppers. During the detection, the glass bottles are sent into the gas chromatograph through the sampler. The sampler in the existing technology can only deliver one glass bottle at a time. The next sample can only be introduced after one sample is detected, which has the problem of low injection efficiency. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the shortcomings of the existing technology, the utility model provides a gas chromatograph sample feeder to solve the problem of low sampling efficiency in that the gas chromatograph sample feeder of the existing technology proposed in the background technology can only feed one glass bottle at a time and the next sample can only be fed after one sample is tested.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A gas chromatograph sample injector comprises a gas chromatograph body, a sampling box, a sampling mechanism, a sample injection mechanism, a sample injection tray, a sample delivery component and a detection hole;

[0008] The sampling box is slidably connected to the gas chromatograph body;

[0009] The sampling mechanism is installed on the top of the gas chromatograph body;

[0010] The sample injection mechanism is installed on the gas chromatograph body;

[0011] The sample injection tray is fixedly connected to the outer wall of the gas chromatograph body;

[0012] The sample delivery component is installed on the sample feeding tray;

[0013] There are multiple detection holes, and the multiple detection holes are all opened on the gas chromatograph body.

[0014] Furthermore, the sampling mechanism includes a sampler, an electric cylinder 1, a lofting groove, a lofting hole, a rack, a motor 1, a gear and a transmission assembly;

[0015] The sampler is slidably connected in the sampling box;

[0016] The electric cylinder 1 is fixedly connected to the top of the sampling box, and the electric cylinder 1 is fixedly connected to the sampler;

[0017] The sample placement groove is slidably connected to the top of the gas chromatograph body;

[0018] There are multiple lofting holes, and the multiple lofting holes are all opened on the lofting groove;

[0019] The rack is fixedly connected to the lofting groove;

[0020] The motor 1 is fixedly connected to the gas chromatograph body;

[0021] The gear is rotatably connected to the output end of the motor 1;

[0022] The transmission assembly is mounted on the outer wall of the gas chromatograph body.

[0023] Furthermore, the sample introduction mechanism includes a sample introduction plate, a sample slot and a mounting box;

[0024] The sample injection plate is fixedly connected to the sample injection tray;

[0025] There are multiple sample slots, and the multiple sample slots are all opened on the sample injection plate;

[0026] The installation box is fixedly connected to the bottom end of the sample injection tray.

[0027] Furthermore, the sample delivery assembly includes a sample injection shaft, a support arm, a second motor, a second electric cylinder, an exhauster and a suction tube;

[0028] The injection shaft is rotatably and slidably connected in the injection tray;

[0029] The support arm is fixedly connected to the sample delivery shaft;

[0030] The second motor is fixedly connected in the installation box, and the output end of the second motor is fixedly connected to the injection shaft;

[0031] The second electric cylinder is fixedly connected to the bottom end of the installation box, and the output end of the second electric cylinder is fixedly connected to the second motor;

[0032] There are multiple air extractors, and the multiple air extractors are fixedly connected to the top end of the support arm;

[0033] There are multiple suction pipes, and the multiple suction pipes are respectively connected to the output ends of the exhauster.

[0034] Preferably, the transmission assembly includes a threaded rod, a slider and a motor;

[0035] The threaded rod is rotatably connected to the top of the gas chromatograph body;

[0036] The slider is fixedly connected to the sampling box;

[0037] The motor three is fixedly connected to the gas chromatograph body, and the output end of the motor three is fixedly connected to the threaded rod.

[0038] More preferably, the plurality of sample slots are divided into a plurality of groups, and the number of the sample slots in each group is the same as the number of the aspiration tubes.

[0039] (3) Beneficial effects

[0040] Compared with the prior art, the present invention provides a gas chromatograph sample injector with the following beneficial effects:

[0041] 1. In the utility model, the sampling mechanism can absorb the sample in the glass bottle and inject it into the gas chromatograph body. After injecting one sample, another sample can be absorbed, and the continuity is high.

[0042] 2. In the present invention, the sample injection mechanism and the sample delivery assembly cooperate to continuously inject samples into the gas chromatograph. Compared with the method in the prior art that can only inject one sample at a time, the present invention can inject multiple samples at one time, greatly improving the efficiency of injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the overall structure of this application;

[0044] Figure 2 This is a schematic diagram of the structure of a partial cross-section of this application;

[0045] Figure 3 This is a schematic diagram of the sampling component structure of this application;

[0046] Figure 4 This is a structural diagram of the sample delivery component of this application.

[0047] In the figure: 1. Gas chromatograph body; 2. Sampling box; 3. Sampling plate; 4. Detection hole; 5. Sampler; 6. Electric cylinder 1; 7. Sampling slot; 8. Sampling hole; 9. Rack; 10. Motor 1; 11. Gear; 12. Sampling plate; 13. Sample slot; 14. Mounting box; 15. Sampling shaft; 16. Support arm; 17. Motor 2; 18. Electric cylinder 2; 19. Aspirator; 20. Suction tube; 21. Threaded rod; 22. Slider; 23. Motor 3. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] See also Figures 1 to 4 A gas chromatograph sample injector comprises a gas chromatograph body 1, a sampling box 2, a sampling mechanism, a sampling mechanism, a sampling tray 3, a sample delivery component and a detection hole 4. The sampling box 2 is slidably connected to the gas chromatograph body 1, the sampling mechanism is installed on the top of the gas chromatograph body 1, the sampling mechanism is installed on the gas chromatograph body 1, the sampling tray 3 is fixedly connected to the outer wall of the gas chromatograph body 1, the sample delivery component is installed on the sampling tray 3, a plurality of detection holes 4 are provided, and the plurality of detection holes 4 are all opened on the gas chromatograph body 1. The sampling mechanism is used to absorb samples in a glass bottle. The sampling mechanism and the sample delivery component cooperate. Multiple samples are placed in the sampling mechanism. Through the cooperation of the sample delivery component and the sampling mechanism, multiple samples are placed under the sampling mechanism at one time, and the sampling efficiency is higher and the sampling continuity is higher.

[0050] Among them, the sampling mechanism includes a sampler 5, an electric cylinder 6, a sampler groove 7, a sampler hole 8, a rack 9, a motor 10, a gear 11 and a transmission assembly. The sampler 5 is slidably connected in the sampling box 2, the electric cylinder 6 is fixedly connected to the top of the sampling box 2, the electric cylinder 6 is fixedly connected to the sampler 5, the sampler groove 7 is slidably connected to the top of the gas chromatograph body 1, there are multiple sampler holes 8, and multiple sampler holes 8 are all opened on the sampler groove 7. The rack 9 is fixedly connected to the sampler groove 7, the motor 10 is fixedly connected to the gas chromatograph body 1, the gear 11 is rotatably connected to the output end of the motor 10, and the transmission assembly is installed on the outer wall of the gas chromatograph body 1. The sampling mechanism continuously samples by absorbing the sample placed in the sampler groove 7 through the sampler 5, and the sampling efficiency is higher.

[0051] Secondly, the sample injection mechanism includes a sample injection plate 12, a sample slot 13 and an installation box 14. The sample injection plate 12 is fixedly connected to the sample injection tray 3. There are multiple sample slots 13, and multiple sample slots 13 are all opened on the sample injection plate 12. The installation box 14 is fixedly connected to the bottom end of the sample injection tray 3. The sample injection slot is used to place glass bottles containing samples.

[0052] Again, the sample delivery assembly includes an injection shaft 15, a support arm 16, a second motor 17, an electric cylinder 18, an exhauster 19 and an absorption tube 20. The injection shaft 15 is rotatably and slidably connected to the injection tray 3, the support arm 16 is fixedly connected to the sample delivery shaft, the second motor 17 is fixedly connected to the mounting box 14, the output end of the second motor 17 is fixedly connected to the injection shaft 15, the second electric cylinder 18 is fixedly connected to the bottom end of the mounting box 14, the output end of the second electric cylinder 18 is fixedly connected to the second motor 17, a plurality of exhausters 19 are provided, and a plurality of exhausters 19 are fixedly connected to the top end of the support arm 16, a plurality of absorption tubes 20 are provided, and a plurality of absorption tubes 20 are respectively connected to the output end of the exhauster 19, the absorption tube 20 presses the rubber stopper of the glass bottle to form a seal, and the exhauster 19 sucks air to form a negative pressure, so that the support arm 16 absorbs a plurality of glass bottles containing samples under the positioning of the second motor 17 and the second electric cylinder 18, and the injection efficiency is higher.

[0053] Among them, the transmission assembly includes a threaded rod 21, a slider 22 and a motor three 23. The threaded rod 21 is rotatably connected to the top of the gas chromatograph body 1, the slider 22 is fixedly connected to the sampling box 2, the motor three 23 is fixedly connected to the gas chromatograph body 1, and the output end of the motor three 23 is fixedly connected to the threaded rod 21. The transmission assembly is used to drive the sampling box 2 and the structure thereon to move to the detection hole 4.

[0054] Finally, the plurality of sample slots 13 are divided into a plurality of groups, and the number of sample slots 13 in each group is the same as the number of the suction tubes 20, so that each time suction is performed, the suction tubes 20 can suck a group of glass bottles containing samples.

[0055] To sum up, when the gas chromatograph injector is injecting samples, first the motor 10 drives the gear 11 to rotate, and the gear 11 drives the rack 9 to move, thereby driving the sample slot 7 to move, exposing the sample hole 8, and the electric cylinder 2 18 is started to drive the injection shaft 15 to move upward, and then the motor 2 17 is started to drive the support arm 16 to rotate to the position of the injection tray 3, and the electric cylinder 2 18 is started to press the suction tube 20 against the rubber stopper of the glass bottle containing the sample, and then the exhauster 19 is started to drive the suction tube 20 to suck a group of multiple glass bottles, and then the electric cylinder 2 18 and the motor 2 17 are started to drive the support arm 16 to rotate to the position of the sample slot 7, and close the exhauster to put the sample into the sample hole 8, and the electric cylinder 1 6 is started to drive the sampler 5 to penetrate the rubber stopper of the glass bottle to absorb the medicine, and the motor 3 23 is started to drive the threaded rod 21 to rotate, thereby driving the slider 22 to move, and further driving the sampling box 2 to move to the detection hole 4 position, and injecting the sample into the gas chromatograph body 1.

[0056] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas chromatograph injector, comprising a gas chromatograph body (1), characterized in that: Also includes: A sampling box (2), wherein the sampling box (2) is slidably connected to the gas chromatograph body (1); A sampling mechanism, the sampling mechanism being mounted on the top of the gas chromatograph body (1); A sample injection mechanism, the sample injection mechanism being mounted on the gas chromatograph body (1); A sample injection plate (3), the sample injection plate (3) being fixedly connected to the outer wall of the gas chromatograph body (1); A sample delivery component, the sample delivery component being mounted on the sample feeding tray (3); A detection hole (4), wherein a plurality of the detection holes (4) are provided, and the plurality of detection holes (4) are all opened on the gas chromatograph body (1).

2. A gas chromatograph sample injector according to claim 1, characterized in that, The sampling mechanism comprises: A sampler (5), the sampler (5) being slidably connected in the sampling box (2); An electric cylinder (6), wherein the electric cylinder (6) is fixedly connected to the top of the sampling box (2), and the electric cylinder (6) is fixedly connected to the sampler (5); a sample dispensing groove (7), wherein the sample dispensing groove (7) is slidably connected to the top end of the gas chromatograph body (1); Lofting holes (8), wherein a plurality of the lofting holes (8) are provided, and the plurality of the lofting holes (8) are all opened on the lofting groove (7); A rack (9), wherein the rack (9) is fixedly connected to the lofting groove (7); Motor 1 (10), said motor 1 (10) being fixedly connected to said gas chromatograph body (1); A gear (11), the gear (11) being rotatably connected to an output end of the motor 1 (10); A transmission assembly is mounted on the outer wall of the gas chromatograph body (1).

3. A gas chromatograph sample injector according to claim 2, characterized in that, The sample injection mechanism comprises: A sample injection plate (12), the sample injection plate (12) is fixedly connected to the sample injection tray (3); A sample slot (13), wherein a plurality of the sample slots (13) are provided, and the plurality of sample slots (13) are all opened on the sample injection plate (12); An installation box (14) is fixedly connected to the bottom end of the sample injection tray (3).

4. A gas chromatograph sample injector according to claim 3, characterized in that, The sample delivery component includes: An injection shaft (15), the injection shaft (15) is rotatably and slidably connected to the injection tray (3); A support arm (16), wherein the support arm (16) is fixedly connected to the injection shaft (15); Motor 2 (17), wherein the motor 2 (17) is fixedly connected in the installation box (14), and the output end of the motor 2 (17) is fixedly connected to the injection shaft (15); Electric cylinder 2 (18), said electric cylinder 2 (18) is fixedly connected to the bottom end of said mounting box (14), and the output end of said electric cylinder 2 (18) is fixedly connected to said motor 2 (17); An exhauster (19), wherein a plurality of the exhausters (19) are provided, and the plurality of the exhausters (19) are fixedly connected to the top end of the support arm (16); A suction pipe (20), wherein a plurality of the suction pipes (20) are provided, and the plurality of the suction pipes (20) are respectively connected to the output ends of the exhauster (19).

5. A gas chromatograph sample injector according to claim 4, characterized in that, The transmission assembly comprises: a threaded rod (21), the threaded rod (21) being rotatably connected to the top end of the gas chromatograph body (1); A slider (22), the slider (22) being fixedly connected to the sampling box (2); Motor three (23), the motor three (23) is fixedly connected to the gas chromatograph body (1), and the output end of the motor three (23) is fixedly connected to the threaded rod (21).

6. A gas chromatograph sample injector according to claim 5, characterized in that, The plurality of sample slots (13) are divided into a plurality of groups, and the number of the sample slots in each group is the same as the number of the suction tubes (20).

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