Lightweight VOCs gas chromatograph detection device

Abstract

The utility model relates to the technical field of VOCs (volatile organic compounds) detection, in particular to a lightweight VOCs gas chromatograph detection device which comprises ventilation windows fixedly mounted on the left side and the right side of a gas chromatograph body, a fixing frame is fixedly mounted on the left side of the gas chromatograph body, and a filter cartridge is mounted on the inner side of the fixing frame. A filter screen for treating dust is arranged on the inner side of the filter cartridge, and caustic soda asbestos for treating water and carbon dioxide is arranged on the inner side of the filter cartridge. When gas is detected by utilizing a gas chromatography method, dust in introduced gas can be filtered out through the filter screen arranged in the filter cartridge, and moisture and carbon dioxide in the gas are treated in cooperation with caustic soda asbestos arranged in the filter cartridge; according to the gas chromatograph, the to-be-detected gas sample is pretreated when the detected sample gas is introduced into a system in the gas chromatograph body for detection, and the deviation of detection data can be reduced by pretreating moisture, carbon dioxide and dust in the sample gas.

Description

Technical Field

[0001] This utility model relates to the field of VOCs detection technology, specifically a lightweight VOCs gas chromatograph detection device. Background Technology

[0002] Gas chromatographs are advanced analytical instruments that combine chromatographic separation and detection techniques to perform precise qualitative and quantitative analysis of complex multi-component mixtures. Although there are many types of gas chromatographs with diverse functions, their basic structure is largely the same.

[0003] A typical gas chromatograph consists of the following systems: a gas path system that provides carrier gas; an injection system for introducing the sample; a separation system (i.e., the column system) for separating the sample; a detection and temperature control system for detecting the separated components and controlling the temperature; and finally, a recording system for recording and analyzing the data. These systems work together to accomplish the analysis of complex mixtures.

[0004] In the process of detecting gases using gas chromatography, if the gas contains a high proportion of water, carbon dioxide, or dust, it will significantly interfere with the accuracy of the detection results. Currently used gas chromatographs often lack appropriate pretreatment steps when introducing gases into the system, which leads to deviations in the final detection data. Utility Model Content

[0005] The purpose of this invention is to provide a lightweight VOCs gas chromatograph detection device that filters moisture, carbon dioxide, and dust.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lightweight VOCs gas chromatograph detection device, comprising ventilation windows fixedly installed on the left and right sides of the gas chromatograph body, a fixing frame fixedly installed on the left side of the gas chromatograph body, a filter cartridge installed on the inner side of the fixing frame, a filter screen for dust removal provided on the inner side of the filter cartridge, caustic soda asbestos for water and carbon dioxide removal provided on the inner side of the filter cartridge, the filter screen being located above the caustic soda asbestos, and a positioning component for fixing the filter cartridge provided on one side of the fixing frame, the positioning component comprising a top seat fixedly installed on one side of the fixing frame and a base movably installed on one side of the fixing frame.

[0007] For ease of sealing, in a preferred embodiment of this lightweight VOCs gas chromatograph detection device, a top pad is fixedly installed on the inner side of the top seat, and a bottom pad is fixedly installed on the inner side of the base, with both the base and the bottom pad in pressure contact with the filter cartridge.

[0008] To facilitate rotation, as a preferred lightweight VOCs gas chromatograph detection device of this utility model, the positioning component further includes a fixing rod fixedly installed on one side of the fixing frame, one end of the fixing rod is rotatably sleeved with a threaded rod, and the top end of the threaded rod is fixedly installed with a throttle handle.

[0009] For ease of adjustment, in a preferred embodiment of this lightweight VOCs gas chromatograph detection device, a fixing column is fixedly installed at the bottom of the fixing rod, a support plate is slidably sleeved on the outside of the fixing column, and the base is fixedly installed with the support plate.

[0010] For ease of positioning and installation, in a preferred embodiment of this lightweight VOCs gas chromatograph detection device, a fixing block is fixedly installed on one side of the support plate, and the fixing block is threadedly connected to the threaded rod.

[0011] To facilitate gas delivery, as a preferred lightweight VOCs gas chromatograph detection device of this utility model, a corrugated pipe is provided below the support plate. The top end of the corrugated pipe is fixedly connected to the bottom of the base, and a gas delivery pipe is fixedly installed at the bottom end of the corrugated pipe. One end of the gas delivery pipe passes through the left side of the gas chromatograph body and is connected to the connecting pipe inside the gas chromatograph body.

[0012] For ease of maintenance, as a preferred lightweight VOCs gas chromatograph detection device of this utility model, a door is provided on the front of the gas chromatograph body, and a touch screen is fixedly installed on one side of the door.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] When using gas chromatography to detect gases, the filter screen inside the filter cartridge can filter out dust from the introduced gas. In addition, the caustic soda and asbestos inside the filter cartridge can treat the moisture and carbon dioxide in the gas. This pretreatment of the sample gas before it is introduced into the gas chromatograph system can reduce the deviation of the detection data. Attached Figure Description

[0015] Figure 1 This is a top-view perspective structural diagram of the present invention.

[0016] Figure 2 This is a top-down perspective view of the present invention.

[0017] Figure 3 This is a top-view perspective view of the fixing frame of this utility model;

[0018] Figure 4 This is a bottom-view perspective view of the fixing frame of this utility model;

[0019] Figure 5 This is a cross-sectional structural diagram of the filter cartridge of this utility model.

[0020] In the diagram: 1. Gas chromatograph body; 2. Vent window; 3. Mounting bracket; 4. Door; 5. Touch screen; 6. Filter cartridge; 7. Filter screen; 8. Caustic soda asbestos; 9. Gas inlet head; 10. Mounting rod; 11. Top seat; 12. Top pad; 13. Base; 14. Bottom pad; 15. Corrugated pipe; 16. Gas delivery pipe; 17. Mounting block; 18. Threaded rod; 19. Rotary handle; 20. Mounting column; 21. Support plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0022] Please see Figures 1 to 5 A lightweight VOCs gas chromatograph detection device includes ventilation windows 2 fixedly installed on the left and right sides of the gas chromatograph body 1. A mounting bracket 3 is fixedly installed on the left side of the gas chromatograph body 1. A filter cartridge 6 is installed inside the mounting bracket 3. A filter screen 7 for dust removal is provided inside the filter cartridge 6. Caustic soda asbestos 8 for water and carbon dioxide removal is provided inside the filter cartridge 6. The filter screen 7 is located above the caustic soda asbestos 8. A positioning assembly for fixing the filter cartridge 6 is provided on one side of the mounting bracket 3. The positioning assembly includes a top seat 11 fixedly installed on one side of the mounting bracket 3 and a base 13 movably installed on one side of the mounting bracket 3.

[0023] In this embodiment: by setting up a filter cylinder 6, a filter screen 7 and caustic soda asbestos 8, it is convenient to pre-treat the gas sample to be tested. The filter screen 7 filters out the dust carried by the sample gas, and the caustic soda asbestos 8 lifts the sample to treat the moisture and carbon dioxide in the gas, so as to reduce the deviation of the detection data when it is introduced into the gas chromatograph body 1 for system detection.

[0024] As a technical optimization of this utility model, a top pad 12 is fixedly installed on the inner side of the top seat 11, and a bottom pad 14 is fixedly installed on the inner side of the base 13. Both the base 13 and the bottom pad 14 are in contact with the filter cylinder 6.

[0025] In this embodiment: by setting the top pad 12 and the bottom pad 14, when the filter cartridge 6 is installed between the top seat 11 and the base 13, the top pad 12 and the bottom pad 14 can increase the sealing of the filter cartridge 6 installation, ensuring the normal delivery of gas, thereby enabling the filter cartridge 6 to better process the sample gas and remove dust, moisture, carbon dioxide and other factors that affect the detection results.

[0026] As a technical optimization of this utility model, the positioning component also includes a fixing rod 10 fixedly installed on one side of the fixing frame 3, one end of the fixing rod 10 is rotatably sleeved with a threaded rod 18, and the top end of the threaded rod 18 is fixedly installed with a handle 19; a fixing post 20 is fixedly installed at the bottom of the fixing rod 10, and a support plate 21 is slidably sleeved on the outside of the fixing post 20, and the base 13 is fixedly installed with the support plate 21; a fixing block 17 is fixedly installed on one side of the support plate 21, and the fixing block 17 is threadedly sleeved with the threaded rod 18.

[0027] In this embodiment: by setting the threaded rod 18 and the handle 19, the threaded rod 18 can be rotated by rotating the handle 19, thereby driving the fixed block 17 to move, so that the fixed block 17 drives the support plate 21 to move along the fixed column 20, and the height of the support plate 21 can be adjusted, which facilitates the installation, positioning and fixing of the filter cartridge 6.

[0028] As a technical optimization of this utility model, a corrugated pipe 15 is provided below the support plate 21. The top end of the corrugated pipe 15 is fixedly connected to the bottom of the base 13. A gas supply pipe 16 is fixedly installed at the bottom end of the corrugated pipe 15. One end of the gas supply pipe 16 passes through the left side of the gas chromatograph body 1 and is connected to the connecting pipe inside the gas chromatograph body 1.

[0029] In this embodiment, by setting a corrugated pipe 15, when the height of the support plate 21 is adjusted, the length of the corrugated pipe 15 can be adjusted to better transport the processed gas through the corrugated pipe 15 to the gas delivery pipe 16, thereby improving the detection results of the sample gas data.

[0030] As a technical optimization of this utility model, a door 4 is provided on the front of the gas chromatograph body 1, and a touch screen 5 is fixedly installed on one side of the door 4.

[0031] In this embodiment: the touch screen 5 facilitates the operation and control of the system inside the gas chromatograph 1 by the operator's finger touch and click, and the door 4 facilitates the opening of the gas chromatograph 1 to inspect or maintain the internal system.

[0032] Working principle:

[0033] When using the gas chromatograph body 1 to detect gases, firstly, the top of the filter cartridge 6 is installed at the top seat 11. Then, the handle 19 is rotated to drive the threaded rod 18 to rotate, thereby moving the fixing block 17. This causes the fixing block 17 to move the support plate 21 along the fixing column 20, adjusting the height of the support plate 21 so that the support plate 21 moves the base 13 to position and fix the bottom of the filter cartridge 6. Then, the sample gas is connected and installed with the gas inlet head 9. During the detection operation, the introduced gas is first filtered to remove dust through the filter screen 7 inside the filter cartridge 6. Then, the caustic soda asbestos 8 inside the filter cartridge 6 treats the moisture and carbon dioxide in the gas. This pretreatment of the sample gas before it is introduced into the gas chromatograph body 1 for detection reduces the deviation of the detection data and completes the detection of lightweight VOCs.

[0034] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A light-weight VOCs gas chromatograph detection device, comprising air vents (2) fixedly installed on the left and right sides of a gas chromatograph body (1), characterized in that: A mounting bracket (3) is fixedly installed on the left side of the gas chromatograph body (1). A filter cartridge (6) is installed inside the mounting bracket (3). A filter screen (7) for dust removal is provided inside the filter cartridge (6). A caustic soda asbestos (8) for water and carbon dioxide removal is provided inside the filter cartridge (6). The filter screen (7) is located above the caustic soda asbestos (8). A positioning component for fixing the filter cartridge (6) is provided on one side of the mounting bracket (3). The positioning component includes a top seat (11) fixedly installed on one side of the mounting bracket (3) and a base (13) movably installed on one side of the mounting bracket (3).

2. The light-weight VOCs gas chromatograph detection device according to claim 1, characterized in that: A top pad (12) is fixedly installed on the inner side of the top seat (11), and a bottom pad (14) is fixedly installed on the inner side of the base (13). Both the base (13) and the bottom pad (14) are in contact with the filter cylinder (6).

3. The light-weight VOCs gas chromatograph detection device according to claim 1, characterized in that: The positioning assembly also includes a fixing rod (10) fixedly installed on one side of the fixing frame (3), one end of the fixing rod (10) is rotatably sleeved with a threaded rod (18), and the top end of the threaded rod (18) is fixedly installed with a throttle (19).

4. The light-weight VOCs gas chromatograph detection device according to claim 3, characterized in that: A fixing post (20) is fixedly installed at the bottom of the fixing rod (10), and a support plate (21) is slidably sleeved on the outside of the fixing post (20). The base (13) is fixedly installed with the support plate (21).

5. The light-weight VOCs gas chromatograph detection device according to claim 4, characterized in that: A fixing block (17) is fixedly installed on one side of the support plate (21), and the fixing block (17) is threadedly connected to the threaded rod (18).

6. The light-weight VOCs gas chromatograph detection device according to claim 4, characterized in that: A corrugated pipe (15) is provided below the support plate (21). The top end of the corrugated pipe (15) is fixedly connected to the bottom of the base (13). A gas supply pipe (16) is fixedly installed at the bottom end of the corrugated pipe (15). One end of the gas supply pipe (16) passes through the left side of the gas chromatograph body (1) and is connected to the connecting pipe inside the gas chromatograph body (1).

7. The light-weight VOCs gas chromatograph detection device according to claim 1, characterized in that: A door (4) is provided in front of the gas chromatograph body (1), and a touch screen (5) is fixedly installed on one side of the door (4).

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