Atmospheric pollution particulate matter sampling device

Abstract

The utility model discloses an atmospheric pollution particulate matter sampling device which comprises an air inlet shell fixedly connected to the rear end of a sampling connecting shell, a first fan is fixedly installed on the right side in the air inlet shell, a connecting shell and a sampling shell are arranged on the sampling connecting shell, a second fan is fixedly installed in the connecting shell, and a first fan is fixedly installed on the right side in the sampling connecting shell. A first filter screen and a second filter screen are fixedly connected to the end of the connecting shell and the end of the sampling shell respectively, a rotating cavity communicated with the sampling shell and the connecting shell is formed in the sampling connecting shell, a rotating disc is rotationally connected to the interior of the rotating cavity, and four air filtering and sampling structures are connected to the rotating disc. The mesh number of the filter screen holes of each air filtering and sampling structure is different, the mesh number of the first filter screen and the mesh number of the second filter screen are larger than the mesh number of the largest filter screen holes in the air filtering and sampling structures, and a driving mechanism is arranged on the sampling connecting shell, so that particulate matters with different sizes can be filtered. The method adapts to the technical field of atmospheric environment protection.

Description

Technical Field

[0001] The utility model belongs to the technical field of atmospheric environmental protection, and specifically relates to an atmospheric pollution particulate sampling device. Background Art

[0002] Atmospheric particulate matter is the general term for various solid and liquid particulate substances existing in the atmosphere. Various particulate substances are evenly dispersed in the air to form a relatively stable and huge suspension system, that is, an aerosol system. When collecting pollution particulate matter, a sampling device is often used to collect the particulate matter. When an ordinary particulate matter sampling device is used, only one filter mesh structure is adopted, which cannot meet the requirements for detecting different particles. Moreover, after the ordinary particulate matter sampling device filters, it is inconvenient to clean the filter mesh structure, thus affecting the results of the next detection. Therefore, we propose an atmospheric pollution particulate sampling device. Content of the Utility Model

[0003] The utility model provides an atmospheric pollution particulate sampling device to solve the technical problems proposed in the above background art.

[0004] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0005] An atmospheric pollution particulate sampling device, the key point is that it includes an air inlet housing fixedly connected to the rear end of the sampling connection housing. A first fan is fixedly installed on the right side inside the air inlet housing. A connection housing and a sampling housing are arranged on the sampling connection housing and at the front end of the air inlet housing. The sampling housing and the connection housing are respectively detachably connected to the left and right sides of the sampling connection housing, and the sampling housing and the connection housing are arranged opposite to each other left and right. A second fan is fixedly installed inside the connection housing. The ends of the connection housing and the sampling housing are respectively fixedly connected with a first filter screen and a second filter screen. A rotation cavity communicating with the sampling housing and the connection housing respectively is opened inside the sampling connection housing. A turntable is rotatably connected inside the rotation cavity. Four air filtration sampling structures are detachably connected to the turntable at intervals along its circumference. The mesh numbers of the filter holes of each air filtration sampling structure are all different, and the mesh numbers of the first filter screen and the second filter screen are greater than the maximum mesh number of the filter holes in the air filtration sampling structure. A driving mechanism for driving the turntable to rotate is arranged on the sampling connection housing. The rotation cavity communicates with the inner cavity of the air inlet housing.

[0006] Further, the driving mechanism includes an adjusting rod inserted into the sampling connection housing, and the adjusting rod is rotatably connected to the sampling connection housing. The turntable is coaxially fixedly connected to the adjusting rod.

[0007] Further, the air filtering and sampling structure includes a filter net body coaxially and fixedly connected inside the threaded ring. Four threaded holes are formed through the turntable at circumferentially spaced intervals. Each threaded ring is respectively threadedly connected to each threaded hole, and the mesh numbers of the four filter net bodies are different. The mesh numbers of the first filter net and the second filter net are greater than the mesh number of the largest filter net body in the air filtering and sampling structure.

[0008] Further, a storage filter net is coaxially and fixedly installed inside the threaded ring and on the left side of the filter net body. The mesh number of the storage filter net is smaller than that of the rear filter net body, and the storage filter net faces the side where air enters.

[0009] Further, an elastic rubber ring is coaxially and fixedly connected to the outer side wall of the turntable, and the outer side wall of the elastic rubber ring abuts against the inner side wall of the rotating cavity.

[0010] Further, the sampling housing and the connecting housing are respectively threadedly connected to the left and right sides of the sampling connection housing.

[0011] Due to the adoption of the above structure, compared with the prior art, the technical progress achieved by the present utility model is as follows: By starting the first blower, the air flow direction in the air inlet housing is from left to right. After the particulate matter in the air is filtered by the air filtering and sampling structure in the air inlet housing, the turntable is driven by the driving mechanism to rotate 180°, so that the filtered air filtering and sampling structure rotates to a position corresponding to the first filter net and the second filter net before and after. Then, the second blower is started, and the air flow direction in the connecting housing is from right to left, so as to blow out the particulate matter in front of the air filtering and sampling structure in the reverse direction, so that the particulate matter gathers in the sampling housing. By disassembling the sampling housing, the particulate matter can be sampled. And when it is necessary to clean the air filtering and sampling structure, the connecting housing and the sampling housing can be disassembled, and then the air filtering and sampling structure can be disassembled for cleaning; Each time, the turntable is driven by the driving mechanism to rotate 90°, so as to replace different air filtering and sampling structures inside the air inlet housing, and thus particulate matter of different sizes can be filtered, so as to meet the requirements for detecting different particles, and the applicable detection environment is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0013] In the drawings:

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

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

[0016] Figure 3 is a cross-sectional view of the present utility model;

[0017] Figure 4 is an exploded view of the sampling connection housing and the turntable of the present utility model;

[0018] Figure 5 is a schematic structural view of the connection between the threaded ring and the filter mesh body of the present utility model;

[0019] Figure 6 is a cross-sectional view of the connection between the filter mesh body and the storage filter mesh of the present utility model.

[0020] Labeled components: 1. Air intake housing; 2. Sampling connection housing; 3. Connection housing; 4. First filter mesh; 5. Telescopic connection frame; 6. Air intake port; 7. Adjusting rod; 8. Sampling housing; 9. Second filter mesh; 10. Turntable; 11. Air filtration sampling structure; 12. Threaded ring; 13. Filter mesh body; 14. Storage filter mesh; 15. Rotating cavity; 16. Threaded hole; 17. Elastic rubber ring. Specific embodiments

[0021] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not intended to limit the present utility model.

[0022] The present utility model discloses an air pollution particulate matter sampling device, as Figure 1-6As shown in the figure, it includes an intake housing 1 fixedly connected to the rear end of a sampling connection housing 2. A telescopic connection frame 5 is fixedly connected to the right end of the intake housing 1. The left end of the intake housing 1 is an air intake port 6. A first fan is fixedly installed on the right side inside the intake housing 1. On the sampling connection housing 2 and at the front end of the intake housing 1, there are a connection housing 3 and a sampling housing 8. The sampling housing 8 and the connection housing 3 are respectively detachably connected to the left and right sides of the sampling connection housing 2. The sampling housing 8 and the connection housing 3 are arranged opposite to each other left and right. A second fan is fixedly installed inside the connection housing 3. The ends of the connection housing 3 and the sampling housing 8 are respectively fixedly connected with a first filter screen 4 and a second filter screen 9. A rotation cavity 15 communicating with the sampling housing 8 and the connection housing 3 respectively is formed inside the sampling connection housing 2. A turntable 10 is rotatably connected inside the rotation cavity 15. Four air filtration and sampling structures 11 spaced circumferentially along the turntable 10 are detachably connected to the turntable 10. The mesh numbers of the filter holes of each air filtration and sampling structure 11 are different, and the mesh numbers of the first filter screen 4 and the second filter screen 9 are greater than the maximum mesh number of the filter holes in the air filtration and sampling structures 11. A driving mechanism for driving the turntable 10 to rotate is arranged on the sampling connection housing 2. The rotation cavity 15 communicates with the inner cavity of the intake housing 1. The working principle and advantages of the present utility model are as follows: During operation, by starting the first fan, the air flow direction in the intake housing 1 is from left to right. After the particulate matter in the air is filtered by the air filtration and sampling structures 11 in the intake housing 1, the turntable 10 is driven by the driving mechanism to rotate 180°, so that the filtered air filtration and sampling structures 11 rotate to the positions corresponding to the first filter screen 4 and the second filter screen 9 front and back. Then, the second fan is started, and the air flow direction in the connection housing 3 is from right to left, so as to blow out the particulate matter on the front side of the air filtration and sampling structures 11 in the reverse direction, so that the particulate matter gathers in the sampling housing 8. By disassembling the sampling housing 8, the particulate matter can be sampled. And when it is necessary to clean the air filtration and sampling structures 11, the connection housing 3 and the sampling housing 8 can be detachably connected, and then the air filtration and sampling structures 11 can be disassembled for cleaning; each time the turntable 10 is driven by the driving mechanism to rotate 90°, so as to replace different air filtration and sampling structures 11 inside the intake housing 1, and different sizes of particulate matter can be filtered, so as to meet the requirements for detecting different particles, and the applicable detection environment is wider.

[0023] As a preferred embodiment of the present utility model, the driving mechanism includes an adjusting rod 7 inserted into the sampling connection housing 2. The adjusting rod 7 is rotatably connected to the sampling connection housing 2. The turntable 10 is coaxially and fixedly connected to the adjusting rod 7. By manually rotating the adjusting rod 7, the turntable 10 can be driven to rotate, thereby adjusting the position of the air filtration sampling structure 11. A resilient rubber ring 17 is coaxially and fixedly connected to the outer sidewall of the turntable 10. The outer sidewall of the resilient rubber ring 17 abuts against the inner sidewall of the rotating cavity 15. In this way, the turntable 10 can have a relative positioning function after rotating to any position, so that the turntable 10 will not rotate easily without external force applied.

[0024] As a preferred embodiment of the present utility model, the air filtration sampling structure 11 includes a filter mesh body 13 coaxially and fixedly connected within a threaded ring 12. Four threaded holes 16 are formed through the turntable 10 and are circumferentially spaced apart along the turntable. Each threaded ring 12 is respectively threadedly connected to each threaded hole 16. The mesh numbers of the four filter mesh bodies 13 are different. The mesh numbers of the first filter mesh 4 and the second filter mesh 9 are greater than the mesh number of the largest filter mesh body 13 in the air filtration sampling structure 11. By setting the mesh numbers in this way, particulate matter can be collected to prevent the particulate matter from passing through the first filter mesh 4 and the second filter mesh 9 to the outside.

[0025] As a preferred embodiment of the present utility model, a storage filter mesh 14 is coaxially and fixedly installed within the threaded ring 12 and on the left side of the filter mesh body 13. The mesh number of the storage filter mesh 14 is smaller than that of the rear filter mesh body 13. The storage filter mesh 14 faces the side of air intake. By providing the storage filter mesh 14, when the turntable 10 is rotated and the filter mesh body 13 in the intake housing 1 rotates between the first filter mesh 4 and the second filter mesh 9, the storage filter mesh 14 can transfer the particulate matter filtered by the filter mesh body 13 between the first filter mesh 4 and the second filter mesh 9 and store the particulate matter to prevent the particulate matter from falling during the rotation process. The sampling housing 8 and the connection housing 3 are respectively threadedly connected to the left and right sides of the sampling connection housing 2, which facilitates the disassembly and assembly of the sampling housing 8 and the connection housing 3.

[0026] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of protection of the claims of the present utility model.

Claims

1. An atmospheric pollution particulate matter sampling device, characterized in that: The invention comprises an air intake shell fixedly connected to the rear end of a sampling connection shell, a first fan is fixedly installed on the right side of the air intake shell, a connection shell and a sampling shell are arranged on the sampling connection shell and at the front end of the air intake shell, the sampling shell and the connection shell are detachably connected to the left and right sides of the sampling connection shell respectively, and the sampling shell and the connection shell are arranged opposite to each other on the left and right sides, a second fan is fixedly installed inside the connection shell, a first filter screen and a second filter screen are fixedly connected to the ends of the connection shell and the sampling shell respectively, a rotating chamber connected to the sampling shell and the connection shell respectively is provided in the sampling connection shell, a turntable is rotatably connected in the rotating chamber, four air filtering sampling structures spaced apart along the circumference thereof are detachably connected to the turntable, the mesh numbers of the filter meshes of each of the air filtering sampling structures are different, and the mesh numbers of the first filter screen and the second filter screen are greater than the mesh number of the largest filter mesh in the air filtering sampling structure, a driving mechanism for driving the turntable to rotate is arranged on the sampling connection shell, and the rotating chamber is connected to the inner cavity of the air intake shell.

2. The air pollution particulate matter sampling device according to claim 1 is characterized in that: The driving mechanism comprises an adjusting rod inserted in the interior of the sampling connection housing, and the adjusting rod is rotatably connected to the sampling connection housing, and the rotating disk is coaxially fixedly connected to the adjusting rod.

3. The air pollution particulate matter sampling device according to claim 2 is characterized in that: The air filtration sampling structure includes a filter body coaxially fixedly connected to a threaded ring, and the turntable is penetrated by four threaded holes spaced along its circumference, and each threaded ring is threadedly connected to each threaded hole, and the mesh numbers of the four filter bodies are different. The mesh numbers of the first filter and the second filter are larger than the mesh number of the largest filter body in the air filtration sampling structure.

4. The air pollution particulate matter sampling device according to claim 3 is characterized by: A storage filter is coaxially fixedly installed in the threaded ring and on the left side of the filter body. The mesh number of the storage filter is smaller than the mesh number of the rear filter body. The storage filter is on the side facing the air intake.

5. The air pollution particulate matter sampling device according to claim 4, characterized in that: An elastic rubber ring is coaxially fixedly connected to the outer side wall of the rotating disk, and the outer side wall of the elastic rubber ring abuts against the inner side wall of the rotating cavity.

6. The air pollution particulate matter sampling device according to claim 5, characterized in that: The sampling housing and the connecting housing are respectively threadedly connected to the left and right sides of the sampling connecting housing.

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