Collection device for ambient air detection

Abstract

The utility model discloses a collecting device for ambient air detection, which comprises an air collecting tank, the air outlet end of the air collecting tank is hermetically connected with a primary air filter tank through a first air pipeline, an HEPA (High Efficiency Particulate Air) air filtering structure layer is arranged in the primary air filter tank, and an air pressure monitoring meter is arranged outside the primary air filter tank. The first-stage air filter tank is connected with a second-stage air filter tank in a sealed mode through a second air conveying pipeline, a plurality of activated carbon adsorption face nets are arranged in the second-stage air filter tank, and the air outlet end of the second-stage air filter tank is connected with an air detection box in a sealed mode through a third air conveying pipeline. According to the utility model, after the air in the surrounding environment to be detected is rapidly collected, the primary air filter tank is arranged to be matched with the secondary air filter tank, so that impurity particles in the air can be thoroughly removed, and the filtered air can be conveniently input into the air detection box for chemical component detection; the influence of impurity particles in the air on the detection result is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of air detection, in particular to a collection device for ambient air detection. Background Technique

[0002] In environmental detection, atmospheric sampling is the process of collecting gas samples or polluted air samples in the atmosphere. Atmospheric sampling is an important step in atmospheric environmental detection and is of great significance for the reliability of detection data. At present, there are two types of on-site sampling methods: one is to make a large amount of air pass through a liquid absorbent or a solid adsorbent to enrich pollutants with relatively low concentrations in the atmosphere, such as the air extraction method and the filter membrane method, which are usually used for the detection of conventional gas factors; using this method, that is, letting the gas sample enter the absorbent liquid at a certain flow rate, and calculating its content concentration according to the fixed gas factors in the absorbent liquid; the other is to collect the gas sample of the corresponding sampling site with a container, and this method is mainly aimed at gas factors that cannot be fixed with an absorbent. For example, when detecting the odor concentration, non-methane total hydrocarbon and other concentration contents in the atmosphere, it is necessary to fill the gas sample into the sampling device and detect it in the laboratory in the form of a gas phase.

[0003] The Chinese authorized patent document with the publication number of CN211740790U discloses an air collection device for environmental detection. A conical groove is opened on one side of the cylinder head close to the annular ring, a gas hole communicating with the conical groove is opened in the center of the cylinder head, a conical plug matching with the conical groove is fixedly connected inside the gas hole through a tension spring, a cylinder body is rotatably connected to the outside of the rotating shaft, a support rod is fixed to the outside of the cylinder body, a cover body is fixed to one end of the support rod away from the cylinder body, and an exhaust pipe joint is communicated with one side of the cover body. The device forms suction in the cylinder through the movement of the piston. After the cylinder collects the gas, at this time, the tension spring pulls the conical plug back to block the conical groove and seals the cylinder.

[0004] When the above-mentioned prior art detects the ambient air, due to the residual impurity particles in the air, it is easy to cause interference problems to the detection operation. Therefore, it is necessary to develop a new collection device for ambient air detection. Content of the Utility Model

[0005] The purpose of the utility model is to provide a collection device for ambient air detection, so as to solve the problem that in the prior art when detecting the ambient air, due to the residual impurity particles in the air, it is easy to cause interference to the detection operation as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An air collection device for ambient air detection, comprising an air collection tank. The air outlet end of the air collection tank is hermetically connected to a primary air filter tank through a first air delivery pipeline. Inside the primary air filter tank, a HEPA air filtration structure layer is installed, and an air pressure monitoring gauge is installed outside the primary air filter tank. The primary air filter tank is hermetically connected to a secondary air filter tank through a second air delivery pipeline. Inside the secondary air filter tank, a plurality of activated carbon adsorption mesh surfaces are provided. The air outlet end of the secondary air filter tank is hermetically connected to an air detection box through a third air delivery pipeline.

[0007] Preferably, an air extraction pipeline is installed at one end of the air collection tank, and an air extraction switch valve is installed on the air extraction pipeline. One end of the air extraction pipeline is hermetically connected to an air extraction pump provided inside the air collection tank.

[0008] Preferably, a first air delivery pump and a first switch valve are respectively installed on the first air delivery pipeline, and a second air delivery pump is installed on the second air delivery pipeline.

[0009] Preferably, an air detection mechanism is installed inside the air detection box. A detection control panel is provided on the front surface of the air detection box, and a data display screen is provided on the surface of the detection control panel.

[0010] Preferably, a third air delivery pump and a second switch valve are respectively installed on the third air delivery pipeline.

[0011] Preferably, three activated carbon adsorption mesh surfaces are provided. The activated carbon adsorption mesh surfaces are distributed in a parallel and equidistant manner, and the activated carbon adsorption mesh surfaces and the secondary air filter tank are of a detachable structure.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] After quickly collecting the air in the surrounding environment to be detected, the present utility model can completely remove the impurity particles in the air by providing a primary air filter tank in cooperation with a secondary air filter tank, facilitating the input of the filtered air into the air detection box for chemical composition detection, preventing the impurity particles in the air from affecting the detection results, and thus improving the accuracy of air detection. The whole device has the advantages of convenient installation and convenient detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the side structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the internal installation structure of the present utility model.

[0017] In the figure: 1. Air collection tank; 2. Air extraction switch valve; 3. Air extraction pipeline; 4. First switch valve; 5. First air delivery pump; 6. First air delivery pipeline; 7. Second air delivery pump; 8. Air pressure monitoring gauge; 9. Primary filter air tank; 10. Second air delivery pipeline; 11. Secondary filter air tank; 12. Third air delivery pipeline; 13. Third air delivery pump; 14. Second switch valve; 15. Air detection box; 16. Data display screen; 17. Detection control panel; 18. HEPA filter structure layer; 19. Activated carbon adsorption mesh surface. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Please refer to Figures 1-3 , an embodiment provided by the present invention: An air collection device for environmental air detection, including an air collection tank 1. The air outlet end of the air collection tank 1 is hermetically connected to a primary filter air tank 9 through a first air delivery pipeline 6. The HEPA filter structure layer 18 is installed inside the primary filter air tank 9, and the air pressure monitoring gauge 8 is installed outside the primary filter air tank 9. The primary filter air tank 9 is hermetically connected to a secondary filter air tank 11 through a second air delivery pipeline 10. A plurality of activated carbon adsorption mesh surfaces 19 are arranged inside the secondary filter air tank 11. The air outlet end of the secondary filter air tank 11 is hermetically connected to an air detection box 15 through a third air delivery pipeline 12.

[0020] Furthermore, an air extraction pipeline 3 is installed at one end of the air collection tank 1. An air extraction switch valve 2 is installed on the air extraction pipeline 3, and one end of the air extraction pipeline 3 is hermetically connected to an air extraction pump arranged inside the air collection tank 1.

[0021] Furthermore, a first air delivery pump 5 and a first switch valve 4 are respectively installed on the first air delivery pipeline 6, and a second air delivery pump 7 is installed on the second air delivery pipeline 10.

[0022] Furthermore, an air detection mechanism is installed inside the air detection box 15. A detection control panel 17 is arranged on the front surface of the air detection box 15, and a data display screen 16 is arranged on the surface of the detection control panel 17, which is convenient for the air detection mechanism to detect the air components and display the data through the data display screen 16.

[0023] Furthermore, a third air delivery pump 13 and a second switch valve 14 are respectively installed on the third air delivery pipeline 12. By opening the third air delivery pump 13 and the second switch valve 14, the purified and filtered air can be transported to the air detection box 15 for detection operations.

[0024] Furthermore, there are three activated carbon adsorption meshes 19 in total. The activated carbon adsorption meshes 19 are distributed in parallel at equal distances, and the structure between the activated carbon adsorption meshes 19 and the secondary air filter tank 11 is detachable. By setting up multiple layers of activated carbon adsorption mesh 19 structures, it is convenient to layer by layer adsorb and remove solid impurity particles in the collected air.

[0025] Working principle: During use, an air extraction pipeline 3 is installed at one end of the air collection tank 1. An air extraction switch valve 2 is installed on the air extraction pipeline 3. One end of the air extraction pipeline 3 is hermetically connected to an air extraction pump arranged inside the air collection tank 1. By opening the air extraction switch valve 2 and the air extraction pump, the air in the external environment can be pumped into the air collection tank 1 for collection. Subsequently, the first air delivery pump 5 and the first switch valve 4 are opened to deliver the air in the air collection tank 1 to the inside of the primary air filter tank 9. An HEPA air filtration structure layer 18 is installed inside the primary air filter tank 9, and the HEPA air filtration structure layer 18 can adsorb and remove fine impurity particles in the air. Subsequently, the second air delivery pump 7 is opened to deliver the preliminarily filtered air to the secondary air filter tank 11. A plurality of activated carbon adsorption meshes 19 are arranged inside the secondary air filter tank 11. By setting up multiple layers of activated carbon adsorption mesh 19 structures, it is convenient to layer by layer adsorb and remove solid impurity particles in the collected air. Subsequently, the thoroughly purified and filtered air is delivered to the air detection box 15 for detection operations.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0027] The standard parts used in this application document can all be purchased from the market. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art for connection. Moreover, the machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art. No specific description will be made here.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A collection device for ambient air detection, comprising an air collection tank (1), characterized in that: The air outlet end of the air collection tank (1) is sealedly connected to a first-stage air filter tank (9) via a first air transmission pipeline (6); a HEPA air filter structure layer (18) is installed inside the first-stage air filter tank (9); an air pressure monitoring meter (8) is installed outside the first-stage air filter tank (9); the first-stage air filter tank (9) is sealedly connected to a second-stage air filter tank (11) via a second air transmission pipeline (10); a plurality of activated carbon adsorption surface screens (19) are arranged inside the second-stage air filter tank (11); and the air outlet end of the second-stage air filter tank (11) is sealedly connected to an air detection box (15) via a third air transmission pipeline (12).

2. The ambient air detection collection device according to claim 1, characterized in that: An air extraction pipeline (3) is installed at one end of the air collection tank (1), an air extraction switch valve (2) is installed on the air extraction pipeline (3), and one end of the air extraction pipeline (3) is sealedly connected to an air extraction pump arranged inside the air collection tank (1).

3. The ambient air detection collection device according to claim 1, characterized in that: A first gas delivery pump (5) and a first switch valve (4) are respectively installed on the first gas delivery pipeline (6), and a second gas delivery pump (7) is installed on the second gas delivery pipeline (10).

4. The environmental air detection collection device according to claim 1, characterized in that: An air detection mechanism is installed inside the air detection box (15), a detection control panel (17) is provided on the front surface of the air detection box (15), and a data display screen (16) is provided on the surface of the detection control panel (17).

5. The environmental air detection collection device according to claim 1, characterized in that: A third gas delivery pump (13) and a second switch valve (14) are respectively installed on the third gas delivery pipeline (12).

6. The environmental air detection collection device according to claim 1, characterized in that: A total of three activated carbon adsorption surface screens (19) are provided, the activated carbon adsorption surface screens (19) are parallel and equidistantly distributed, and the activated carbon adsorption surface screens (19) and the secondary air filter tank (11) are in a detachable structure.

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