Sample injector for gas chromatograph for soil detection

Abstract

The sample injector comprises a sample injector body, an operation pen, a supporting frame, a pressing cylinder and a pushing assembly, the operation pen is arranged on one side of the sample injector body, the supporting frame is fixedly connected to one side of the sample injector body, the operation pen is connected to the top of the supporting frame in a penetrating mode, and the pressing cylinder is fixedly connected to the top of the supporting frame. The top of the operation pen is sleeved with the pressing cylinder, the pushing assembly is arranged on one side of the sample injector body and used for pushing the operation pen, a fixing plate is fixedly connected to one side of the sample injector body, and the fixing plate is used for fixing the position of the pushing assembly. Through the design of the supporting frame, the pressing cylinder and the pushing assembly, the arranged supporting frame is fixed on one side of the sample injector body, an operation pen is inserted into the supporting frame during use, the pushing assembly drives the pressing cylinder to move downwards, and the position of the operation pen is fixed through the supporting frame and the pressing cylinder; and the situation that the operating pen falls off and is damaged is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas chromatograph technical field especially relates to a soil detection's gas chromatograph with sample injector. BACKGROUND

[0002] The gas chromatograph is a kind of instrument for separating and analyzing gas or volatile liquid, in soil detection, gas chromatograph is used to analyze volatile organic compounds and pesticide in soil.

[0003] In gas chromatograph, sample injector is one of key components, responsible for introducing the sample to be analyzed into chromatograph, when using sample injector, it needs to set cleaning times, needle speed and sampling speed by operating pen and control panel, so as to deliver sample to the inside of gas chromatograph, after operation is completed, operating pen is placed on workbench, when operating pen slides from workbench to ground, damage condition occurs due to falling, therefore, the present scheme proposes a soil detection's gas chromatograph with sample injector to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a soil detection's gas chromatograph with sample injector to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a soil detection's gas chromatograph with sample injector, comprising:

[0006] Sample injector body;

[0007] Operating pen, the operating pen is arranged at the side of sample injector body;

[0008] Support frame, the support frame is fixedly connected at the side of sample injector body, and the operating pen is connected at the top of support frame;

[0009] Pressing cylinder, the pressing cylinder is sleeved at the top of operating pen;

[0010] Pushing assembly, the pushing assembly is arranged at the side of sample injector body, and the pushing assembly is used to push operating pen.

[0011] Preferably, the side of sample injector body is fixedly connected with fixed plate, and the fixed plate is used to fix the position of pushing assembly.

[0012] Preferably, the pushing assembly comprises:

[0013] Connecting rod, the connecting rod is fixedly connected at the top of pressing cylinder, the middle part of fixed plate is provided with threaded hole, and the connecting rod is connected at the inside of threaded hole;

[0014] A spring is disposed on the side of the pressing cylinder opposite to the fixed plate;

[0015] A limiting block is fixedly connected to the top of the connecting rod. The top of the fixing plate is provided with a fixing member for fixing the position of the limiting block, and the bottom of the limiting block is provided with a limiting member.

[0016] Preferably, the limiting element includes:

[0017] A limiting block, wherein the limiting block is fixedly connected to the bottom end of a restricting block;

[0018] A limiting groove is formed on one side of the fixed plate, and the limiting block is inserted into the inside of the limiting groove.

[0019] Preferably, the fixing member includes a rotating column disposed on the side opposite to the fixing plate and the limiting block, and a threaded rod is fixedly connected to the bottom of the rotating column, the threaded rod being threadedly inserted into the inside of the threaded hole.

[0020] Preferably, the fixing member includes a rotating column disposed on the side opposite to the fixing plate and the limiting block, and a threaded rod is fixedly connected to the bottom of the rotating column, the threaded rod being threadedly inserted into the inside of the threaded hole.

[0021] Preferably, the connecting rod is inserted between the rotating column and the threaded rod at the middle.

[0022] The technical effects and advantages of this utility model are as follows:

[0023] This utility model features a support frame, a pressing cylinder, and a pushing component. The support frame is fixed to one side of the injector body. During use, the operating pen is inserted into the support frame, and the pressing cylinder is moved downward by the pushing component. The support frame and the pressing cylinder fix the position of the operating pen, preventing it from falling and being damaged. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0025] Figure 2 This is a three-dimensional structural diagram of the pressing component of this utility model.

[0026] Figure 3 This utility model Figure 2 Enlarged structural diagram of section A.

[0027] Figure 4 This is a front cross-sectional view of the present invention.

[0028] Figure 5 This is a three-dimensional structural diagram of the positioning ring and connecting ring of this utility model.

[0029] In the diagram: 1. Injector body; 2. Operating pen; 3. Support frame; 4. Pressing cylinder; 5. Pushing assembly; 501. Spring; 502. Threaded hole; 503. Connecting rod; 504. Limiting block; 6. Fixing plate; 7. Limiting component; 701. Limiting groove; 702. Limiting block; 8. Fixing component; 801. Positioning ring; 802. Positioning groove; 803. Connecting ring; 804. Connecting groove; 805. Rotating column; 806. Threaded rod. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] This utility model provides, for example Figures 1-5 Shown:

[0032] Example 1:

[0033] A gas chromatograph injector for soil testing includes:

[0034] Injector body 1;

[0035] Operation pen 2 is located on one side of the injector body 1;

[0036] Support frame 3 is fixedly connected to one side of the injector body 1, and operation pen 2 is inserted and connected to the top of support frame 3;

[0037] Pressing cylinder 4 is sleeved on the top of operating pen 2;

[0038] Push component 5 is located on one side of the injector body 1 and is used to push the operating pen 2.

[0039] It should be noted that the sample injector body 1 is an autosampler of model PX-19. The support frame 3 and the pressing cylinder 4 are both provided with grooves on opposite sides. When it is necessary to fix the position of the operating pen 2, the pressing cylinder 4 is first moved upward and the operating pen 2 is inserted into the support frame 3. Finally, the pressing cylinder 4 is moved downward by the pushing component 5, so that the pressing cylinder 4 is fitted on the top of the operating pen 2, and the position of the operating pen 2 is fixed by the support frame 3 and the pressing cylinder 4.

[0040] Specifically, a fixing plate 6 is fixedly connected to one side of the injector body 1. The fixing plate 6 is used to fix the position of the push assembly 5.

[0041] Specifically, component 5 includes:

[0042] The connecting rod 503 is fixedly connected to the top of the pressing cylinder 4. The fixing plate 6 has a threaded hole 502 in the middle, and the connecting rod 503 is inserted into the inside of the threaded hole 502.

[0043] Spring 501 is located on the side of the pressing cylinder 4 opposite to the fixed plate 6;

[0044] The limiting block 504 is fixedly connected to the top of the connecting rod 503. The top of the fixing plate 6 is provided with a fixing member 8 for fixing the position of the limiting block 504, and the bottom of the limiting block 504 is provided with a limiting member 7.

[0045] It should be noted that the spring 501 is located between the pressing cylinder 4 and the fixing plate 6. The spring 501 pushes the pressing cylinder 4 to one side of the support frame 3. The connecting rod 503 is used to connect the pressing cylinder 4 and the limiting block 504. The limiting block 504 is located at the top of the fixing plate 6. When the pressing cylinder 4 moves downward, the pressing cylinder 4 drives the connecting rod 503 and the limiting block 504 to move downward. The fixing plate 6 limits the downward movement distance of the limiting block 504, and the limiting block 504 limits the movement distance of the pressing cylinder 4.

[0046] Specifically, limiting component 7 includes:

[0047] Limiting block 702 is fixedly connected to the bottom end of limiting block 504;

[0048] The limiting groove 701 is formed on one side of the fixing plate 6, and the limiting block 702 is inserted and connected inside the limiting groove 701.

[0049] It should be noted that there are two limiting grooves 701, which is the same as the number of limiting blocks 702. The two limiting blocks 702 are fixedly connected to the side of the limiting block 504 opposite to the pressing cylinder 4. The limiting grooves 701 limit the movement direction of the limiting blocks 702, and the limiting blocks 702 limit the movement direction of the pressing cylinder 4, so as to prevent the pressing cylinder 4 from shaking randomly.

[0050] Example 2:

[0051] Fixing element 8 is used in the injector in Example 1;

[0052] Specifically, the fixing component 8 includes a rotating column 805 disposed on the side opposite to the fixing plate 6 and the limiting block 504. A threaded rod 806 is fixedly connected to the bottom of the rotating column 805. The threaded rod 806 is threadedly inserted into the inside of the threaded hole 502. A connecting groove 804 is provided at the bottom end of the limiting block 504. A connecting ring 803 is fixedly connected to the top end of the rotating column 805. The connecting ring 803 is inserted into the inside of the connecting groove 804. A positioning groove 802 is provided on the inner wall of the top end of the connecting groove 804. A positioning ring 801 is fixedly connected to the top end of the connecting ring 803. The positioning ring 801 is inserted into the inside of the positioning groove 802. The connecting rod 503 is inserted into the middle of the rotating column 805 and the threaded rod 806.

[0053] It should be noted that through holes are provided in the middle of both the rotating column 805 and the threaded rod 806, allowing the connecting rod 503 to pass through the rotating column 805 and the threaded rod 806 and connect with the limiting block 504; the transverse cross-sections of the connecting ring 803, positioning ring 801, positioning groove 802, and connecting groove 804 are all annular, allowing the connecting ring 803 and positioning ring 801 to rotate inside the connecting groove 804 and positioning groove 802 respectively, and the large circle diameter of the positioning ring 801 is larger than the large circle diameter of the connecting groove 804. The positioning ring 801 is prevented from passing through the connecting groove 804 out of the positioning groove 802, thus restricting the positioning ring 801 inside the positioning groove 802. The positioning ring 801, which restricts movement, fixes the limiting block 504 and the rotating column 805. When it is necessary to fix the position of the limiting block 504, the threaded rod 806 at the bottom of the rotating column 805 is threaded through and connected to the inside of the threaded hole 502, thereby fixing the position of the rotating column 805 and the limiting block 504 at the top of the rotating column 805 through the threaded rod 806.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A soil testing gas chromatograph injector characterized by, Include: The sample injector body (1); The operation pen (2) is arranged on one side of the sample injector body (1); The support frame (3) is fixedly connected on one side of the sample injector body (1), and the operation pen (2) is connected through the top of the support frame (3); The pressing cylinder (4) is sleeved on the top of the operation pen (2); The pushing assembly (5) is arranged on one side of the sample injector body (1), and the pushing assembly (5) is used for pushing the operation pen (2).

2. A soil testing gas chromatograph sample injector as defined in claim 1, wherein, One side of the sample injector body (1) is fixedly connected with a fixed plate (6), and the fixed plate (6) is used for fixing the position of the pushing assembly (5).

3. A soil testing gas chromatograph sample injector as defined in claim 2 wherein, The pushing assembly (5) comprises: The connecting rod (503) is fixedly connected on the top of the pressing cylinder (4), the middle part of the fixed plate (6) is provided with a threaded hole (502), and the connecting rod (503) is connected in the threaded hole (502); The spring (501) is arranged on the side opposite to the pressing cylinder (4) and the fixed plate (6); The limiting block (504) is fixedly connected on the top end of the connecting rod (503), the top of the fixed plate (6) is provided with a fixing part (8) for fixing the position of the limiting block (504), and the bottom of the limiting block (504) is provided with a limiting part (7).

4. A soil testing gas chromatograph sample injector as defined in claim 3 wherein, The limiting part (7) comprises: The limiting block (702) is fixedly connected on the bottom end of the limiting block (504); The limiting groove (701) is arranged on one side of the fixed plate (6), and the limiting block (702) is connected in the limiting groove (701).

5. A soil testing gas chromatograph sample injector as defined in claim 3 wherein, The fixing part (8) comprises a rotating column (805) arranged on the side opposite to the fixed plate (6) and the limiting block (504), the bottom of the rotating column (805) is fixedly connected with a threaded rod (806), and the threaded rod (806) is threadedly connected in the threaded hole (502).

6. A soil testing gas chromatograph sample injector as defined in claim 5 wherein, The bottom end of the limiting block (504) is provided with a connecting groove (804), the top end of the rotating column (805) is fixedly connected with a connecting ring (803), the connecting ring (803) is connected in the connecting groove (804), the inner wall of the top end of the connecting groove (804) is provided with a positioning groove (802), the top end of the connecting ring (803) is fixedly connected with a positioning ring (801), and the positioning ring (801) is connected in the positioning groove (802).

7. A soil testing gas chromatograph sample injector as defined in claim 5 wherein, The connecting rod (503) is connected in the middle part of the rotating column (805) and the threaded rod (806).

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