Active pumping sampler for environmental gas

Abstract

The utility model relates to an active pumping sampler for environmental gas, which comprises a box body with an opening on the front side, a sucking pump is arranged on one side of the bottom in the box body, a gas inlet pipe and a gas outlet pipe are respectively arranged on the sucking pump, and the gas inlet pipe and the gas outlet pipe respectively penetrate out of two sides of the box body. An adjusting valve, a flow meter, a particulate matter sampling and collecting mechanism and a gas sampling and collecting mechanism are sequentially arranged on the gas inlet pipe in the gas flowing direction, a plurality of supporting rods are arranged on the rear side in the box body, supporting clamping sleeves are arranged at the front ends of the supporting rods, and the gas inlet pipe is clamped in the supporting clamping sleeves. When the sampling device is used, particulate matters and gas in sampled gas can be conveniently collected in a classified manner, the filter paper and the packed column are simple and convenient to replace, and the use is flexible and convenient.

Description

Technical Field

[0001] The utility model relates to the field of gas sampling, in particular to an active pumping sampler for environmental gas. Background Art

[0002] Ambient gas sampling is a crucial step in monitoring the concentrations of various pollutants in the atmosphere. It is often used for air quality assessments, pollution source identification, health impact studies, and regulatory compliance checks. In some cases, particulate matter and gaseous pollutants in the gas may be mixed, complicating subsequent analysis, especially when separate detection of particulate matter and gaseous pollutants is required. To facilitate subsequent testing, separate collection of particulate matter and gaseous pollutants is typically performed using filter paper and packed columns. However, the installation and removal of filter paper and packed columns can be cumbersome, hindering sampling efficiency. Summary of the Invention

[0003] The utility model aims to solve the deficiencies of the prior art and provides an active pumping sampler for environmental gas.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an active pump suction sampler for environmental gas, comprising a box body with an opening on the front side, an air pump is provided on one side of the bottom of the box body, an air inlet pipe and an air outlet pipe are respectively provided on the air pump, the air inlet pipe and the air outlet pipe respectively pass through the two sides of the box body, a regulating valve, a flow meter, a particulate matter sampling and collecting mechanism and a gas sampling and collecting mechanism are sequentially provided on the air inlet pipe along the gas flow direction, a plurality of support rods are provided on the rear side of the box body, a support sleeve is provided at the front end of the support rod, and the air inlet pipe is clamped in the support sleeve.

[0005] In particular, there is a handle on the top of the box.

[0006] Particularly, the ends of the air inlet pipe and the air outlet pipe passing through the box body are threadedly connected with plugging heads.

[0007] In particular, the particulate matter sampling and collecting mechanism includes a corrugated telescopic tube, a first air inlet hood, a second air inlet hood, a movable sleeve, a locking sleeve, and filter paper. The first air inlet hood and the second air inlet hood are provided with positioning grooves on opposite sides thereof. A number of positioning posts are evenly distributed on the circumference of one side of the movable sleeve. Positioning holes corresponding to the positioning posts are provided on the filter paper. The filter paper is sleeved on the positioning posts through the positioning holes. The movable sleeve is inserted into the positioning groove of the second air inlet hood and is tightly abutted through the positioning groove of the first air inlet hood. The locking sleeve is threadedly connected to the outer wall of the joint between the first air inlet hood and the second air inlet hood. One side of the corrugated telescopic tube is connected to the inlet end of the first air inlet hood, and the other side of the corrugated telescopic tube is connected to the outlet end of the second air inlet hood.

[0008] In particular, the gas sampling and collecting mechanism includes a fixed block, an air inlet pipe, an air outlet pipe, a connecting sleeve, and a filling column. The fixed block is arranged on the top of the box body, the connecting sleeve is fixed to the bottom of the fixed block, and the filling column is threadedly connected to the outside of the connecting sleeve. The air inlet pipe and the air outlet pipe are both inverted L-shaped, and the air inlet pipe and the air outlet pipe enter the filling column after passing through the fixed block and the connecting sleeve. The inlet end of the air inlet pipe and the outlet end of the air outlet pipe are connected to the air inlet pipe.

[0009] The beneficial effects of the utility model are as follows: the utility model can control the sampling air flow speed when in use by arranging a box body, an air pump, a regulating valve, a flow meter, a particle sampling and collecting mechanism, and a gas sampling and collecting mechanism to ensure that sampling is carried out in accordance with the set standard conditions. The actual air flow rate passing through can also be measured to ensure the accuracy of sampling. At the same time, it is also convenient to classify and collect the particles and gases in the sampled gas, and the filter paper and the filling column are easy to replace, the sampling efficiency is high, and the use is flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the utility model;

[0011] Figure 2 This is a schematic diagram of the structure of the particle sampling and collecting mechanism of the present utility model;

[0012] Figure 3 for Figure 1 A in the middle is an enlarged schematic diagram;

[0013] In the figure: 1-box; 2-air pump; 3-inlet pipe; 4-outlet pipe; 5-regulating valve; 6-flow meter; 7-particulate sampling and collection mechanism; 8-gas sampling and collection mechanism; 9-support ferrule; 10-handle; 11-corrugated telescopic tube; 12-first inlet hood; 13-second inlet hood; 14-movable sleeve; 15-locking sleeve; 16-filter paper; 17-positioning column; 18-fixing block; 19-inlet air duct; 20-outlet air duct; 21-connecting sleeve; 22-filling column;

[0014] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] like Figure 1-Figure 3As shown, an active pump-suction sampler for environmental gas includes a box body 1 with an opening on the front side, a handle 10 on the top of the box body 1, an air pump 2 on one side of the bottom of the box body 1, an air inlet pipe 3 and an air outlet pipe 4 respectively provided on the air pump 2, the air inlet pipe 3 and the air outlet pipe 4 respectively pass through the two sides of the box body 1, and the ends of the air inlet pipe 3 and the air outlet pipe 4 passing through the box body 1 are threadedly connected with sealing heads. When not in use, the sealing heads are connected to the ends of the air inlet pipe 3 and the air outlet pipe 4 to prevent dust from entering.

[0017] The air inlet pipe 3 is provided with a regulating valve 5, a flow meter 6, a particulate matter sampling and collecting mechanism 7 and a gas sampling and collecting mechanism 8 in sequence along the gas flow direction. A number of support rods are provided on the rear side of the box body 1. A support sleeve 9 is provided at the front end of the support rod, and the air inlet pipe 3 is clamped in the support sleeve 9.

[0018] The particulate matter sampling and collecting mechanism 7 includes a bellows telescopic tube 11, a first air inlet hood 12, a second air inlet hood 13, a movable sleeve 14, a locking sleeve 15, and a filter paper 16. The first air inlet hood 12 and the second air inlet hood 13 are provided with corresponding positioning grooves on their opposite surfaces. A number of positioning posts 17 are evenly distributed on one side of the movable sleeve 14. Positioning holes corresponding to the positioning posts 17 are provided on the filter paper 16. The filter paper 16 is sleeved on the positioning posts 17 through the positioning holes. The movable sleeve 14 is inserted into the positioning groove of the second air inlet hood 13 and is tightly abutted through the positioning groove of the first air inlet hood 12. The locking sleeve 15 is threadedly connected to the outer wall of the joint between the first air inlet hood 12 and the second air inlet hood 13. One side of the bellows telescopic tube 11 is connected to the inlet end of the first air inlet hood 12, and the other side of the bellows telescopic tube 11 and the outlet end of the second air inlet hood 13 are connected to the inlet pipe 3.

[0019] The gas sampling and collecting mechanism 8 includes a fixed block 18, an air inlet air duct 19, an air outlet air duct 20, a connecting sleeve 21, and a filling column 22. The fixed block 18 is arranged at the top of the box body 1, the connecting sleeve 21 is fixed to the bottom of the fixed block 18, and the filling column 22 is threadedly connected to the outside of the connecting sleeve 21. The air inlet air duct 19 and the air outlet air duct 20 are both inverted L-shaped, and the air inlet air duct 19 and the air outlet air duct 20 pass through the fixed block 18 and the connecting sleeve 21 and then enter the filling column 22. The inlet end of the air inlet air duct 19 and the outlet end of the air outlet air duct 20 are connected to the air inlet pipe 3.

[0020] When the utility model is working, hold the handle 10 and place the box 1 at the sampling location, start the air pump 2, adjust the regulating valve 5, control the sampling air flow speed, and ensure that the sampling is carried out according to the set standard conditions. The flow meter 6 is used to measure the actual air flow rate to ensure the accuracy of the sampling. When the gas enters the first air inlet cover 12 and is filtered through the filter paper 16, the larger particles in the sampled gas will be intercepted and remain on the filter paper 16. The filter 16 can then be weighed or further chemically analyzed to determine the concentration and composition of the particulate matter; the filtered gas enters the second air inlet cover 13, and then continues to enter the first air duct 19 through the air inlet pipe 3. At this time, the sampled gas enters In the filling column 22, the adsorbent in the filling column 22 absorbs the sampled gas, and the adsorbed gas returns to the air inlet pipe 3 again through the second air duct 20, then enters the air pump 2, and is discharged through the air outlet pipe 4; after the sampling is completed, the filling column 22 is rotated downward to disengage it from the connecting sleeve 21, and then the top of the filling column 22 is sealed, and the sampled gas is collected; the locking sleeve 15 is rotated in the direction of the first air inlet hood 12 or the second air inlet hood 13 to separate the first air inlet hood 12 and the second air inlet hood 13, and the first air inlet hood 12 is pulled by the corrugated telescopic tube 11, the movable sleeve 14 is taken out, and the filter paper 16 is removed from the positioning column 17, and the particulate matter in the sampled gas is collected.

[0021] When the utility model is used, it is convenient to classify and collect particulate matter and gas in the sampled gas, and the filter paper 16 and the filling column 22 are easy to replace, and the use is flexible and convenient.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. An active pumping sampler for ambient gas, comprising a box (1) with a front opening, characterized in that: An air pump (2) is provided on one side of the bottom of the box (1), and an air inlet pipe (3) and an air outlet pipe (4) are provided on the air pump (2). The air inlet pipe (3) and the air outlet pipe (4) respectively pass through both sides of the box (1). A regulating valve (5), a flow meter (6), a particle sampling and collecting mechanism (7) and a gas sampling and collecting mechanism (8) are provided on the air inlet pipe (3) in sequence along the direction of gas flow. A plurality of support rods are provided on the rear side of the box (1), and a support sleeve (9) is provided at the front end of the support rod. The air inlet pipe (3) is clamped in the support sleeve (9).

2. An active pumping sampler for environmental gas according to claim 1, characterized in that: A handle (10) is provided on the top of the box body (1).

3. The active pumping sampler for environmental gas according to claim 1, characterized in that: The ends of the air inlet pipe (3) and the air outlet pipe (4) passing through the box body (1) are threadedly connected with plugs.

4. The active pumping sampler for environmental gas according to claim 1, characterized in that: The particle sampling and collecting mechanism (7) comprises a bellows telescopic tube (11), a first air inlet cover (12), a second air inlet cover (13), a movable sleeve (14), a locking sleeve (15), and filter paper (16). The first air inlet cover (12) and the second air inlet cover (13) are provided with positioning grooves on their opposite sides. A plurality of positioning posts (17) are evenly distributed on one side of the movable sleeve (14). Positioning holes corresponding to the positioning posts (17) are provided on the filter paper (16). The filter paper (16) is passed through the positioning holes. The movable sleeve (14) is sleeved on the positioning column (17), and is inserted into the positioning groove of the second air intake cover (13) and tightly abutted through the positioning groove of the first air intake cover (12). The locking sleeve (15) is threadedly connected to the outer wall of the joint between the first air intake cover (12) and the second air intake cover (13). One side of the corrugated telescopic tube (11) is connected to the inlet end of the first air intake cover (12), and the other side of the corrugated telescopic tube (11) is connected to the outlet end of the second air intake cover (13) on the air intake pipe (3).

5. The active pumping sampler for environmental gas according to claim 1, characterized in that: The gas sampling and collecting mechanism (8) comprises a fixed block (18), an air inlet air guide pipe (19), an air outlet air guide pipe (20), a connecting sleeve (21), and a filling column (22). The fixed block (18) is arranged at the top of the box body (1), the connecting sleeve (21) is fixed to the bottom of the fixed block (18), the filling column (22) is threadedly connected to the outside of the connecting sleeve (21), the air inlet air guide pipe (19) and the air outlet air guide pipe (20) are both in an inverted L shape, and the air inlet air guide pipe (19) and the air outlet air guide pipe (20) pass through the fixed block (18) and the connecting sleeve (21) and then enter the filling column (22), and the inlet end of the air inlet air guide pipe (19) and the outlet end of the air outlet air guide pipe (20) are connected to the air inlet pipe (3).

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