Gas exhaust device of gas chromatography detector

Abstract

The utility model relates to the field of waste gas treatment of analytical instruments, and discloses an exhaust device of a gas chromatographic detector, which comprises a gas chromatographic detector body, an exhaust mechanism and a filter mechanism, a main exhaust pipe is arranged on one side of the filter mechanism, a first filter layer is arranged on one side in the filter mechanism, and a second exhaust pipe is arranged on the other side in the filter mechanism. And a second filtering layer is arranged in the middle position in the filtering mechanism. According to the utility model, in the exhaust mechanism, the three-way pipe is equipped with two electromagnetic valves which can respectively control the exhaust channels of the waste gas system and the replacement system, so that an operator can flexibly adjust according to the actual situation and ensure the reasonable and efficient exhaust of the waste gas, and the replaced waste gas and the detected waste gas share the same waste gas system; and the detected waste gas can be uniformly recovered or discharged outdoors through the waste gas pipeline, so that the waste gas after detection is prevented from being directly discharged into the atmospheric environment, the discharge of combustible and toxic gas in the laboratory is effectively reduced, and the safety of the laboratory is greatly improved.

Description

Gas Chromatography Detector Exhaust Device Technical Field

[0001] This utility model relates to the field of exhaust gas treatment for analytical instruments, and in particular to an exhaust device for a gas chromatograph detector. Background Technology

[0002] The exhaust system of a gas chromatograph detector is an important component of a gas chromatograph. Its main function is to safely and effectively remove the waste gases generated by the detector from the instrument. In gas chromatographic analysis, the detector will generate various waste gases. If these waste gases are not removed in time, they may affect the accuracy of the test results or even endanger the health of the operators. This device has stable exhaust performance, which can ensure the smooth progress of the analysis process and protect the safety of the experimental environment.

[0003] Existing exhaust systems mostly employ decentralized treatment methods for both replacement and post-detection exhaust gases, resulting in low and incomplete treatment efficiency. Furthermore, due to the lack of unified management, exhaust emissions are difficult to monitor and fail to meet environmental regulations. Therefore, those skilled in the art have provided exhaust systems for gas chromatograph detectors to address the problems mentioned in the background section. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a gas chromatography detector exhaust device that effectively reduces the emission of flammable and toxic gases in the laboratory, thereby greatly improving laboratory safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A gas chromatograph detector exhaust device includes a gas chromatograph detector body, an exhaust mechanism, and a filter mechanism. A main exhaust pipe is provided on one side of the filter mechanism, a first filter layer is provided on one side of the filter mechanism, a second filter layer is provided in the middle of the filter mechanism, and a third filter layer is provided on the other side of the filter mechanism.

[0007] The exhaust mechanism includes a first exhaust pipe, a three-way pipe, and a second exhaust pipe. A first solenoid valve is fixedly installed on one side of the outer surface of the three-way pipe, and a second solenoid valve is fixedly installed on the other side of the outer surface of the three-way pipe. The filter mechanism includes a filter box, multiple fixing bolts, and a box cover. Connecting pipes are fixedly installed on both sides of the filter box.

[0008] Furthermore, the gas chromatograph detector body includes a gas chromatograph detector body, an exhaust port for an exhaust system is fixedly provided on one side of the upper end of the gas chromatograph detector body, and an exhaust port for a displacement system is fixedly provided on one side of the gas chromatograph detector body.

[0009] Furthermore, one side of the first exhaust pipe is fixedly connected to the exhaust port of the exhaust system, and the other side of the first exhaust pipe is fixedly connected to one side of the tee pipe.

[0010] Furthermore, one side of the second exhaust pipe is fixedly connected to the exhaust port of the replacement system, and the other side of the second exhaust pipe is fixedly connected to the other side of the three-way pipe.

[0011] Furthermore, one of the two connecting pipes is fixedly connected to the tee pipe.

[0012] Furthermore, the filter box and the box cover are connected by multiple fixing bolts.

[0013] Furthermore, the first filter layer is a glass fiber filter cotton layer, and the second filter layer is an activated carbon filter layer.

[0014] Furthermore, the third filter layer is a HEPA filter layer.

[0015] This utility model has the following beneficial effects:

[0016] 1. The exhaust device for the gas chromatograph detector proposed in this utility model has two solenoid valves in the exhaust mechanism, which can control the exhaust channels of the waste gas system and the replacement system respectively. The operator can flexibly adjust according to the actual situation to ensure the rationality and efficiency of waste gas emission. In addition, the replacement waste gas and the waste gas after detection share the same waste gas system. The waste gas after detection can be uniformly recovered or discharged to the outside through the waste gas pipeline. This design avoids the waste gas after detection being directly discharged into the atmosphere, effectively reducing the emission of flammable and toxic gases in the laboratory and greatly improving the safety of the laboratory.

[0017] 2. The exhaust device for the gas chromatograph detector proposed in this utility model has a filtration mechanism with three layers of filters with different functions. The glass fiber filter layer first intercepts large particulate impurities, the activated carbon filter layer adsorbs odors and some harmful gases, and the HEPA filter layer further filters fine particles. This progressive filtration method can effectively remove various harmful substances from the exhaust gas, ensuring that the discharged gas meets environmental protection requirements and reducing environmental pollution. In addition, the cover and filter box are connected by fixing bolts in the filtration mechanism, which makes it easy to open the cover to replace and maintain the filter layer. When the filter layer reaches the end of its service life or adsorption saturation, it can be quickly replaced to ensure the continuity of the filtration effect and reduce the maintenance difficulty and cost of the equipment. Attached Figure Description

[0018] Figure 1 is an axonometric view of the present invention;

[0019] Figure 2 is a front view schematic diagram of this utility model;

[0020] Figure 3 is an enlarged view of section A of this utility model;

[0021] Figure 4 is a cross-sectional schematic diagram of the filter mechanism of this utility model.

[0022] Legend:

[0023] 1. Gas chromatograph detector body; 2. Exhaust mechanism; 3. Filtration mechanism; 4. Main exhaust pipe; 5. First filter layer; 6. Second filter layer; 7. Third filter layer; 101. Exhaust port of the waste gas system; 102. Gas chromatograph detector body; 103. Exhaust port of the replacement system; 201. First exhaust pipe; 202. First solenoid valve; 203. T-connector; 204. Second solenoid valve; 205. Second exhaust pipe; 301. Filter box; 302. Fixing bolt; 303. Box cover; 304. Connecting pipe. Detailed Implementation

[0024] 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.

[0025] Referring to Figures 1-4, one embodiment of this utility model provides a gas chromatograph detector exhaust device, including a gas chromatograph detector body 1, an exhaust mechanism 2, and a filter mechanism 3. A main exhaust pipe 4 is provided on one side of the filter mechanism 3, a first filter layer 5 is provided on one side inside the filter mechanism 3, a second filter layer 6 is provided in the middle of the filter mechanism 3, and a third filter layer 7 is provided on the other side inside the filter mechanism 3. The first filter layer 5 is glass fiber filter cotton, the second filter layer 6 is an activated carbon filter layer, and the third filter layer 7 is a HEPA filter layer.

[0026] Specifically, the gas chromatograph detector body 1 is the source of exhaust gas. The exhaust mechanism 2 is responsible for guiding the exhaust gas generated by the gas chromatograph detector body 1 to the filtration mechanism 3. The filtration mechanism 3 purifies the exhaust gas, removing harmful substances. Finally, the purified gas is discharged through the main exhaust pipe 4. The glass fiber filter cotton layer of the first filter layer 5 can initially filter large particulate impurities in the exhaust gas. The activated carbon filter layer of the second filter layer 6 can adsorb odors and some harmful gases in the exhaust gas. The HEPA filter layer of the third filter layer 7 can further filter fine particles, improving the exhaust gas purification effect.

[0027] Referring to Figures 1-3, the gas chromatograph detector body 1 includes a gas chromatograph detector body 102. An exhaust port 101 for the exhaust system is fixedly installed on one side of the upper end of the gas chromatograph detector body 102, and an exhaust port 103 for the displacement system is fixedly installed on one side of the gas chromatograph detector body 102. The exhaust mechanism 2 includes a first exhaust pipe 201, a three-way pipe 203, and a second exhaust pipe 205. A first solenoid valve 202 is fixedly installed on one side of the outer surface of the three-way pipe 203, and a second solenoid valve 204 is fixedly installed on the other side of the outer surface of the three-way pipe 203. One side of the first exhaust pipe 201 is fixedly connected to the exhaust port 101 for the exhaust system, and the other side of the first exhaust pipe 201 is fixedly connected to one side of the three-way pipe 203. One side of the second exhaust pipe 205 is fixedly connected to the exhaust port 103 for the displacement system, and the other side of the second exhaust pipe 205 is fixedly connected to the other side of the three-way pipe 203.

[0028] Specifically, in the gas chromatograph detector body 1, the exhaust port 101 of the exhaust system is used to discharge the exhaust gas generated by the exhaust system of the gas chromatograph detector body 102, and the exhaust port 103 of the replacement system is used to discharge the exhaust gas generated by the replacement system. In the exhaust mechanism 2, the first exhaust pipe 201 introduces the exhaust gas of the exhaust system into the three-way pipe 203, and the second exhaust pipe 205 introduces the exhaust gas of the replacement system into the three-way pipe 203. The first solenoid valve 202 and the second solenoid valve 204 can control the opening and closing of the two exhaust channels respectively, so as to facilitate the adjustment of exhaust gas emission according to the actual situation.

[0029] Referring to Figures 1 and 3, the filter mechanism 3 includes a filter box 301, multiple fixing bolts 302 and a box cover 303. Connecting pipes 304 are fixedly installed on both sides of the filter box 301. One of the two connecting pipes 304 is fixedly connected to a three-way pipe 203. The filter box 301 and the box cover 303 are connected by multiple fixing bolts 302.

[0030] Specifically, in the filter mechanism 3, the filter box 301 provides installation space for the filter layer, the connecting pipe 304 is used to connect the tee pipe 203 and the main exhaust pipe 4, so that the exhaust gas can smoothly enter the filter box 301 for filtration, and multiple fixing bolts 302 fix the box cover 303 to the filter box 301, making it convenient to open the box cover 303 to replace and maintain the filter layer.

[0031] Working principle: When the exhaust gas system of the gas chromatograph detector body 102 generates exhaust gas, the exhaust gas enters the first exhaust pipe 201 through the exhaust gas system exhaust port 101. When the replacement system generates exhaust gas, the exhaust gas enters the second exhaust pipe 205 through the replacement system exhaust port 103. By controlling the opening and closing states of the first solenoid valve 202 and the second solenoid valve 204, the exhaust gas can be selectively introduced into the three-way pipe 203. The exhaust gas enters the filter box 301 from the three-way pipe 203 through the connecting pipe 304. It first passes through the first filter layer 5 to filter large particulate impurities, then through the second filter layer 6 to adsorb odors and some harmful gases, and finally through the third filter layer 7 to filter fine particles. The gas purified by the three layers of filtration enters the main exhaust pipe 4 through another connecting pipe 304 and is finally discharged to the outside. When it is necessary to replace the filter layer, loosen the fixing bolt 302 and open the box cover 303 to operate.

[0032] 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 gas chromatograph detector exhaust device, comprising a gas chromatograph detector body (1), an exhaust mechanism (2), and a filter mechanism (3), characterized in that: The filter mechanism (3) has a main exhaust pipe (4) on one side, a first filter layer (5) on one side inside the filter mechanism (3), a second filter layer (6) in the middle of the filter mechanism (3), and a third filter layer (7) on the other side inside the filter mechanism (3). The exhaust mechanism (2) includes a first exhaust pipe (201), a three-way pipe (203), and a second exhaust pipe (205). A first solenoid valve (202) is fixedly installed on one side of the outer surface of the three-way pipe (203), and a second solenoid valve (204) is fixedly installed on the other side of the outer surface of the three-way pipe (203). The filter mechanism (3) includes a filter box (301), multiple fixing bolts (302), and a box cover (303). Connecting pipes (304) are fixedly installed on both sides of the filter box (301).

2. The exhaust device for a gas chromatograph detector according to claim 1, characterized in that: The gas chromatograph detector body (1) includes a gas chromatograph detector body (102), an exhaust port (101) of the exhaust system is fixedly provided on one side of the upper end of the gas chromatograph detector body (102), and an exhaust port (103) of the displacement system is fixedly provided on one side of the gas chromatograph detector body (102).

3. The exhaust device for a gas chromatograph detector according to claim 1, characterized in that: The first exhaust pipe (201) is fixedly connected to the exhaust port (101) of the exhaust system on one side, and the first exhaust pipe (201) is fixedly connected to the tee pipe (203) on the other side.

4. The exhaust device for a gas chromatograph detector according to claim 1, characterized in that: One side of the second exhaust pipe (205) is fixedly connected to the exhaust port (103) of the replacement system, and the other side of the second exhaust pipe (205) is fixedly connected to the other side of the three-way pipe (203).

5. The exhaust device for a gas chromatograph detector according to claim 1, characterized in that: One of the two connecting pipes (304) is fixedly connected to the tee pipe (203).

6. The exhaust device for a gas chromatograph detector according to claim 1, characterized in that: The filter box (301) and the cover (303) are connected by a plurality of fixing bolts (302).

7. The exhaust device for a gas chromatograph detector according to claim 1, characterized in that: The first filter layer (5) is a glass fiber filter cotton layer, and the second filter layer (6) is an activated carbon filter layer.

8. The exhaust device for a gas chromatograph detector according to claim 1, characterized in that: The third filter layer (7) is a HEPA filter layer.

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