Gas chromatograph convenient for sample introduction for detection and inspection

Abstract

The utility model discloses a gas chromatograph convenient for sample introduction for detection and inspection, relates to the technical field of gas chromatographs, solves the problem that sample introduction detection on various samples is inconvenient to carry out at one time, and comprises a bottom box, the top of the bottom box is fixedly connected with a detection box, and a moving mechanism is arranged in an inner cavity of the bottom box; the bottom of the inner cavity of the detection box is movably connected with a bearing box, and the center of the bottom of the inner cavity of the bearing box is rotatably connected with a rotating shaft through a bearing. Through the arrangement of the bearing plate, the clamping groove, the groove, the telescopic rod, the pressure spring and the clamping plate, a plurality of sample test tubes can be clamped and fixed, so that a plurality of samples can be conveniently injected; by arranging the servo motor, the threaded rod, the threaded sleeve and the push plate, the bearing box and the bearing plate can be driven to move front and back, sample injection operation is further facilitated, by adopting the scheme, sample injection is convenient, meanwhile, multiple samples can be injected at a time, the multiple samples can be conveniently detected, and the detection efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of gas chromatographs, in particular to a gas chromatograph with convenient sample injection for detection and testing. Background Art

[0002] 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. It is widely used in the detection of material samples. The basic structure of gas chromatograph consists of two parts, namely the analysis unit and the display unit. The analysis unit mainly includes the gas source and control metering device, the injection device, the thermostat and the chromatographic column. The display unit mainly includes the calibrator and the automatic recorder. The sample needs to be injected during the detection. The injection method currently used is mostly manual injection, which is prone to deviation and needs to be improved.

[0003] After searching, the China Patent Network disclosed a gas chromatograph for easy injection of drug safety detection, and its authorization announcement number is CN213933711U. This patent solves the problem that the existing gas chromatograph has high operation accuracy during injection, increases the difficulty of injection, and brings inconvenience to the operator through the functions of a limit plate, a guide cylinder, a positioning cylinder, a bidirectional threaded rod, a threaded sleeve, a slider, a sliding sleeve, a sliding rod, a positioning clamp seat, a limit hole and a spring;

[0004] However, the gas chromatograph can only inject one sample at a time. When other samples need to be injected and tested, multiple injections are required, which is not conducive to testing multiple samples at one time. When multiple samples are tested, the detection efficiency is low and there are certain defects in its use. Therefore, a gas chromatograph with convenient injection for detection and testing is proposed. Utility Model Content

[0005] In order to improve the problem that it is inconvenient to perform sampling and testing on multiple samples at one time, the utility model provides a gas chromatograph with convenient sampling for testing and inspection.

[0006] The utility model provides a gas chromatograph with convenient sample introduction for detection and inspection, which adopts the following technical scheme:

[0007] A gas chromatograph with convenient sample injection for detection and inspection, comprising a bottom box, a detection box is fixedly connected to the top of the bottom box, a moving mechanism is provided in the inner cavity of the bottom box, a carrying box is movably connected to the bottom of the inner cavity of the detection box, a rotating shaft is rotatably connected to the center of the bottom of the inner cavity of the carrying box through a bearing, the top of the rotating shaft passes through the carrying box and is fixedly connected to a carrying plate, a fixing mechanism is provided on the surface of the carrying plate, and a driving mechanism is provided in the inner cavity of the carrying box;

[0008] The fixing mechanism includes four card slots, and the four card slots are evenly arranged on the surface of the supporting plate. The tops of both sides of the inner cavity of the card slot are provided with grooves. A telescopic rod is fixedly connected to one side of the inner cavity of the groove, and a compression spring is movably connected to the outer surface of the telescopic rod, and a splint is fixedly connected to the telescopic end of the telescopic rod.

[0009] By adopting the above technical solution, multiple sample test tubes can be clamped and fixed, thereby facilitating the injection of multiple samples and the detection of multiple samples, with high detection efficiency.

[0010] Optionally, the moving mechanism includes a servo motor, which is fixedly installed on the back of the inner cavity of the bottom box. The output end of the servo motor is fixedly connected to a threaded rod, the front side of the threaded rod is rotatably connected to the front side of the inner cavity of the bottom box through a bearing, the outer surface of the threaded rod is threadedly connected to a threaded sleeve, the top of the threaded sleeve is fixedly connected to a push plate, and the front side of the push plate is fixedly connected to the connection between the back of the supporting box and the front side.

[0011] By adopting the above technical solution, the carrying box and the carrying plate can be driven to move forward and backward, further facilitating the sampling operation.

[0012] Optionally, the driving mechanism includes a driving motor, which is fixedly installed on the right side of the bottom of the inner cavity of the carrying box, the output end of the driving motor is fixedly connected to a driving gear, the bottom of the outer surface of the rotating shaft is fixedly connected to a driven gear, and the outer surface of the driving gear is meshed with the outer surface of the driven gear.

[0013] By adopting the above technical solution, the rotating shaft can be driven to rotate, thereby driving the carrying plate to rotate, making it easy to adjust the position of the fixed sample test tube, thereby facilitating the detection of different samples.

[0014] Optionally, a sliding block is fixedly connected to the bottom of the threaded sleeve, a sliding groove cooperating with the sliding block is provided at the bottom of the inner cavity of the bottom box, and the outer surface of the sliding block is slidably connected to the inner surface of the sliding groove.

[0015] By adopting the above technical solution, the movement of the threaded sleeve can be guided and limited.

[0016] Optionally, guide blocks are fixedly connected to the left and right sides of the bottom of the carrying box, and guide grooves for cooperating with the guide blocks are opened on the left and right sides of the bottom of the inner cavity of the detection box, and the outer surface of the guide block is slidably connected to the inner surface of the guide groove.

[0017] By adopting the above technical solution, the movement of the carrying box can be guided and supported.

[0018] Optionally, a through slot is provided on the top of the bottom box, and the outer surface of the push plate is slidably connected to the inner surface of the through slot.

[0019] By adopting the above technical solution, the push plate can be easily moved forward and backward.

[0020] Optionally, a sample inlet is provided at the top of the front side of the detection box, and a transparent observation window is embedded at the top of the front side of the detection box.

[0021] By adopting the above technical solution, the carrying box and the carrying plate can be conveniently moved for sampling.

[0022] Optionally, legs are fixedly connected to the four corners of the bottom of the bottom box, and a control panel is fixedly installed on the top of the right side of the front of the detection box.

[0023] By adopting the above technical solution, the bottom box can be supported conveniently.

[0024] In summary, the utility model has the following beneficial effects:

[0025] 1. The utility model can clamp and fix multiple sample tubes by arranging a carrying plate, a slot, a groove, a telescopic rod compression spring and a clamping plate, so as to facilitate the injection of multiple samples. By arranging a servo motor, a threaded rod, a threaded sleeve and a push plate, the carrying box and the carrying plate can be driven to move back and forth, which further facilitates the injection operation. The above scheme is not only convenient for injection, but also can inject multiple samples at a time, which is convenient for testing multiple samples and has high detection efficiency.

[0026] 2. The utility model can drive the rotating shaft to rotate by setting a driving motor, a driving gear and a driven gear, thereby driving the bearing plate to rotate, so as to facilitate the adjustment of the position of the fixed sample test tube, thereby facilitating the detection of different samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the utility model;

[0028] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0029] Figure 3 It is a schematic diagram of the structure of the mobile mechanism, the carrying box and the carrying plate of the utility model;

[0030] Figure 4 The utility model structure Figure 2 A partial enlarged view of the middle A;

[0031] Figure 5 The utility model structure Figure 3 A partial enlarged view of point B in the middle.

[0032] In the figure: 1, bottom box; 2, detection box; 3, moving mechanism; 301, servo motor; 302, threaded rod; 303, threaded sleeve; 304, push plate; 4, carrying box; 5, rotating shaft; 6, carrying plate; 7, fixing mechanism; 701, slot; 702, groove; 703, telescopic rod; 704, compression spring; 705, clamping plate; 8, driving mechanism; 801, driving motor; 802, driving gear; 803, driven gear; 9, sliding block; 10, slide groove; 11, guide block; 12, guide groove; 13, injection port. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Embodiment 1:

[0035] Please refer to Figure 1-5 A gas chromatograph with convenient sample injection for detection and inspection, comprising a bottom box 1, a detection box 2 is fixedly connected to the top of the bottom box 1, a moving mechanism 3 is provided in the inner cavity of the bottom box 1, a carrying box 4 is movably connected to the bottom of the inner cavity of the detection box 2, a rotating shaft 5 is rotatably connected to the center of the bottom of the inner cavity of the carrying box 4 through a bearing, the top of the rotating shaft 5 passes through the carrying box 4 and is fixedly connected to a carrying plate 6, a fixing mechanism 7 is provided on the surface of the carrying plate 6, and a driving mechanism 8 is provided in the inner cavity of the carrying box 4;

[0036] The fixing mechanism 7 includes a card slot 701, and the number of the card slots 701 is four. The four card slots 701 are evenly opened on the surface of the supporting plate 6, and grooves 702 are opened on the top of both sides of the inner cavity of the card slot 701. A telescopic rod 703 is fixedly connected to one side of the inner cavity of the groove 702, and a compression spring 704 is movably connected to the outer surface of the telescopic rod 703. The telescopic end of the telescopic rod 703 is fixedly connected to a splint 705, and one end of the compression spring 704 close to the splint 705 is fixedly connected to the connection part of the splint 705, and the other end of the compression spring 704 away from the splint 705 is fixedly connected to the connection part of the inner cavity of the groove 702.

[0037] As a technical optimization scheme of the utility model, further, the moving mechanism 3 includes a servo motor 301, the servo motor 301 is fixedly installed on the back of the inner cavity of the bottom box 1, the output end of the servo motor 301 is fixedly connected with a threaded rod 302, the front side of the threaded rod 302 is rotatably connected to the front side of the inner cavity of the bottom box 1 through a bearing, the outer surface of the threaded rod 302 is threadedly connected with a threaded sleeve 303, the top of the threaded sleeve 303 is fixedly connected with a push plate 304, and the front side of the push plate 304 is fixedly connected to the connection between the back side of the supporting box 4 and the support box 4.

[0038] As a technical optimization solution of the utility model, further, the bottom of the threaded sleeve 303 is fixedly connected with a slider 9, and the bottom of the inner cavity of the bottom box 1 is provided with a slide groove 10 used to cooperate with the slider 9, and the outer surface of the slider 9 is slidably connected with the inner surface of the slide groove 10.

[0039] As a technical optimization solution of the utility model, further, guide blocks 11 are fixedly connected to the left and right sides of the bottom of the carrying box 4, and guide grooves 12 for cooperating with the guide blocks 11 are opened on the left and right sides of the bottom of the inner cavity of the detection box 2, and the outer surface of the guide block 11 is slidably connected to the inner surface of the guide groove 12.

[0040] As a technical optimization solution of the utility model, further, a through groove is opened on the top of the bottom box 1, and the outer surface of the push plate 304 is slidably connected to the inner surface of the through groove.

[0041] As a technical optimization solution of the present invention, further, a sample inlet 13 is provided at the top of the front side of the detection box 2 , and a transparent observation window is embedded at the top of the front side of the detection box 2 .

[0042] As a technical optimization solution of the present invention, further, the four corners of the bottom of the bottom box 1 are fixedly connected with supporting legs, and a control panel is fixedly installed on the top of the right side of the front side of the detection box 2.

[0043] In this embodiment: by setting the carrying plate 6, the card slot 701, the groove 702, the telescopic rod 703, the compression spring 704 and the clamping plate 705, multiple sample test tubes can be clamped and fixed, so as to facilitate the injection of multiple samples. By setting the servo motor 301, the threaded rod 302, the threaded sleeve 303 and the push plate 304, the carrying box 4 and the carrying plate 6 can be driven to move back and forth, which further facilitates the injection operation. The above scheme is not only convenient for injection, but also can inject multiple samples at a time, which is convenient for testing multiple samples and has high detection efficiency. By setting the slider 9 and the slide groove 10, can guide the movement of the threaded sleeve 303, and can also limit the movement of the threaded sleeve 303. By setting the guide block 11 and the guide groove 12, it can support the movement of the carrying box 4, and can also limit the movement of the carrying box 4. By setting the through groove, it is convenient for the push plate 304 to move back and forth. By setting the sample injection port 13, it is convenient for the carrying box 4 and the carrying plate 6 to move, so as to facilitate sample injection. By setting a transparent observation window, the situation in the detection box 2 can be viewed. By setting a control panel, the equipment can be controlled.

[0044] Embodiment 2:

[0045] Reference Figure 2 and Figure 4 The driving mechanism 8 includes a driving motor 801, which is fixedly installed on the right side of the bottom of the inner cavity of the carrying box 4. The output end of the driving motor 801 is fixedly connected to a driving gear 802, and the bottom of the outer surface of the rotating shaft 5 is fixedly connected to a driven gear 803. The outer surface of the driving gear 802 is meshed with the outer surface of the driven gear 803.

[0046] As a technical optimization solution of the present invention, further, a baffle is fixedly connected to the front side of the carrying box 4 by screws.

[0047] In this embodiment: by setting a driving motor 801, a driving gear 802 and a driven gear 803, the rotating shaft 5 can be driven to rotate, thereby driving the carrying plate 6 to rotate, which is convenient for adjusting the position of the fixed sample test tube, thereby facilitating the detection of different samples. By setting a baffle, the carrying box 4 can be easily disassembled, thereby facilitating the maintenance of the driving mechanism 8.

[0048] The implementation principle of the utility model is as follows: when in use, the sample test tubes to be tested are placed in the four card slots 701, and at this time, the telescopic rod 703 and the clamping plate 705 are pushed to move toward the middle by the action of the compression spring 704 to clamp and fix the four sample test tubes, and then the control switch of the servo motor 301 is started, the servo motor 301 drives the threaded rod 302 to rotate, the threaded rod 302 drives the threaded sleeve 303 to move backward, the threaded sleeve 303 drives the push plate 304 to move backward, the push plate 304 drives the carrying box 4 to move backward, and the carrying box 4 drives the carrying plate 6 and the sample test tubes fixed on its surface to move backward , complete the injection, and then detect the sample in the sample tube. When it is necessary to detect the sample tube at other positions, start the control switch of the drive motor 801, the drive motor 801 drives the active gear 802 to rotate, the active gear 802 drives the driven gear 803 to rotate, the driven gear 803 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the carrying plate 6 to rotate, thereby driving the fixed sample tube to rotate, the position of the sample tube is replaced, and the detection can be performed again. This method is not only convenient for injection, but also can inject multiple samples at one time, which is convenient for detecting multiple samples and has high detection efficiency.

[0049] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A gas chromatograph with convenient sample introduction for detection and testing, comprising a bottom box (1), characterized in that: The top of the bottom box (1) is fixedly connected to a detection box (2), the inner cavity of the bottom box (1) is provided with a moving mechanism (3), the bottom of the inner cavity of the detection box (2) is movably connected to a carrying box (4), the center of the bottom of the inner cavity of the carrying box (4) is rotatably connected to a rotating shaft (5) through a bearing, the top of the rotating shaft (5) passes through the carrying box (4) and is fixedly connected to a carrying plate (6), the surface of the carrying plate (6) is provided with a fixing mechanism (7), and the inner cavity of the carrying box (4) is provided with a driving mechanism (8); The fixing mechanism (7) comprises a card slot (701), wherein the number of the card slots (701) is four, and the four card slots (701) are evenly arranged on the surface of the bearing plate (6), and grooves (702) are arranged on the tops of both sides of the inner cavity of the card slot (701), and a telescopic rod (703) is fixedly connected to one side of the inner cavity of the groove (702), and a compression spring (704) is movably connected to the outer surface of the telescopic rod (703), and a clamping plate (705) is fixedly connected to the telescopic end of the telescopic rod (703).

2. A gas chromatograph with convenient sample injection for detection and testing according to claim 1, characterized in that: The moving mechanism (3) comprises a servo motor (301), the servo motor (301) is fixedly mounted on the back of the inner cavity of the bottom box (1), the output end of the servo motor (301) is fixedly connected to a threaded rod (302), the front side of the threaded rod (302) is rotatably connected to the front side of the inner cavity of the bottom box (1) via a bearing, the outer surface of the threaded rod (302) is threadedly connected to a threaded sleeve (303), the top of the threaded sleeve (303) is fixedly connected to a push plate (304), and the front side of the push plate (304) is fixedly connected to a connection point on the back side of the bearing box (4).

3. A gas chromatograph with convenient sample injection for detection and testing according to claim 1, characterized in that: The driving mechanism (8) comprises a driving motor (801), the driving motor (801) being fixedly mounted on the right side of the bottom of the inner cavity of the carrying box (4), the output end of the driving motor (801) being fixedly connected to a driving gear (802), the bottom of the outer surface of the rotating shaft (5) being fixedly connected to a driven gear (803), the outer surface of the driving gear (802) being meshed with the outer surface of the driven gear (803).

4. A gas chromatograph with convenient sample injection for detection and testing according to claim 2, characterized in that: The bottom of the threaded sleeve (303) is fixedly connected to a slider (9), the bottom of the inner cavity of the bottom box (1) is provided with a slide groove (10) used in conjunction with the slider (9), and the outer surface of the slider (9) is slidably connected to the inner surface of the slide groove (10).

5. A gas chromatograph with convenient sample injection for detection and testing according to claim 1, characterized in that: The left and right sides of the bottom of the carrying box (4) are fixedly connected with guide blocks (11), and the left and right sides of the bottom of the inner cavity of the detection box (2) are provided with guide grooves (12) used to cooperate with the guide blocks (11), and the outer surface of the guide block (11) is slidably connected with the inner surface of the guide groove (12).

6. A gas chromatograph with convenient sample injection for detection and testing according to claim 2, characterized in that: A through slot is provided on the top of the bottom box (1), and the outer surface of the push plate (304) is slidably connected to the inner surface of the through slot.

7. A gas chromatograph with convenient sample injection for detection and testing according to claim 1, characterized in that: A sample inlet (13) is provided at the top of the front face of the detection box (2), and a transparent observation window is embedded at the top of the front face of the detection box (2).

8. A gas chromatograph with convenient sample injection for detection and testing according to claim 1, characterized in that: The four corners of the bottom of the bottom box (1) are all fixedly connected with supporting legs, and a control panel is fixedly installed on the top of the right side of the front of the detection box (2).

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