Sampling device based on atmospheric particulate detection

Abstract

The utility model discloses a sampling device based on atmospheric particulate detection. The sampling device comprises a sampling box body, an exhaust pipe is arranged in the sampling box body, a fan is arranged on the exhaust pipe, one end of the exhaust pipe is communicated with a filtering box body, and a filter membrane notch is formed in the side wall of the filtering box body; the other end of the exhaust pipe is communicated with an exhaust port in the bottom of the sampling box; a film feeding mechanism and a film collecting mechanism are also movably arranged in the sampling box body; one end of the filter membrane stored on the membrane feeding roller penetrates through the filter membrane notch in the filter box body, bypasses the buffer roller and is wound on the surface of the membrane collecting roller; the upper part of the filtering box body is also communicated with an air inlet cylinder; a plurality of air inlets are circumferentially formed in the upper part of the air inlet cylinder; the sampling device further comprises a controller arranged on the sampling box body, a display screen and a plurality of control buttons are arranged on the surface of the controller, and the motor is electrically connected with the controller. The device is convenient to replace the filter membrane, can well protect the filter membrane from being polluted, and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of atmosphere detection, in particular to a sampling device based on atmospheric particle detection. Background Art

[0002] Atmospheric detection is an important environmental monitoring work, which aims to monitor the concentration of pollutants and meteorological parameters in the atmosphere, so as to evaluate air quality, climate change and other situations. Samplers are needed to detect the concentration of pollutants in the atmosphere. There are many types of atmospheric samplers. According to the collection object, they can be divided into gas (including steam) samplers and particle samplers. Atmospheric particle samplers are devices used to collect suspended particles in the atmosphere (PM10, PM2.5, etc.), and are used to analyze the concentration, size distribution and composition of atmospheric particles. They usually use adsorption, filtration or impact to capture particles in the atmosphere into sampling filters or other collectors. Atmospheric particle samplers play an important role in environmental monitoring, air quality assessment, atmospheric pollution prevention and control, etc. By monitoring and analyzing atmospheric particles, we can better understand and respond to atmospheric pollution problems and protect the environment and human health. At present, there are the following main problems with atmospheric particle samplers: the replacement of the filter membrane is complicated, and the filter membrane is easily contaminated. In view of the above problems, it is necessary to provide a new atmospheric particle sampling device. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a sampling device based on atmospheric particulate matter detection is provided, the device is convenient for replacing filter membranes, can well protect the filter membranes from contamination, and is easy to use.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A sampling device based on atmospheric particulate matter detection comprises a sampling box, an exhaust pipe is arranged inside the sampling box, a fan is arranged on the exhaust pipe, one end of the exhaust pipe is connected to a filter box, a filter membrane notch is arranged on the side wall of the filter box; the other end of the exhaust pipe is connected to an exhaust port at the bottom of the sampling box;

[0006] The sampling box is also provided with a film-applying mechanism and a film-collecting mechanism, the film-applying mechanism comprises a film-applying roller and a buffer roller respectively arranged on both sides of the filter box, the film-collecting mechanism comprises a detachable film-collecting roller arranged below the buffer roller and a motor driving the film-collecting roller to rotate; one end of the filter membrane stored on the film-applying roller passes through the filter membrane notch on the filter box, bypasses the buffer roller and is wound around the surface of the film-collecting roller;

[0007] The upper part of the filter box is also connected to an air inlet cylinder, and the upper part of the air inlet cylinder is circumferentially provided with a plurality of air inlets; the sampling box is provided with a first movable door and a second movable door on one side of the film collecting mechanism and the film placing mechanism respectively;

[0008] It also includes a controller arranged on the sampling box, a display screen and a plurality of control buttons are arranged on the surface of the controller, and the motor is electrically connected to the controller.

[0009] As a preferred embodiment of the above technical solution, the upper film roller and the buffer roller are rotatably arranged in the sampling box body through a first rotating shaft and a second rotating shaft respectively.

[0010] As a preferred embodiment of the above technical solution, an elastic holder is provided on the sampling box, and the first rotating shaft is engaged and connected with the elastic holder.

[0011] As a preferred embodiment of the above technical solution, the elastic clamping seat includes a base and a mounting hole arranged on the base, and the base is also provided with a clamping entrance connected to the mounting hole, the diameter of the clamping entrance is smaller than the diameter of the first rotating shaft, and the diameter of the mounting hole is larger than the diameter of the first rotating shaft.

[0012] As a preferred embodiment of the above technical solution, a driven shaft is arranged on the film collection roller, the output shaft of the motor is connected to a driving shaft, and a slot adapted to the driven shaft is arranged on the driving shaft.

[0013] As a preferred embodiment of the above technical solution, the driven shaft and the motor are supported and fixed by a first support seat and a second support seat respectively.

[0014] As an improvement of the above technical solution, both the first movable door and the second movable door are provided with handles.

[0015] As an improvement of the above technical solution, a rain cover is also provided on the top of the air intake cylinder.

[0016] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] The utility model provides a sampling device based on atmospheric particle detection, which includes a sampling box, an exhaust pipe is arranged inside the sampling box, a fan is arranged on the exhaust pipe, one end of the exhaust pipe is connected to the filter box, and a filter membrane notch is arranged on the side wall of the filter box; the other end of the exhaust pipe is connected to the exhaust port at the bottom of the sampling box; the upper part of the filter box is also connected to an air inlet cylinder, a rain cover is arranged on the upper part of the air inlet cylinder to prevent the filter membrane from being contaminated, and a plurality of air inlets are arranged circumferentially on the upper part of the air inlet cylinder; a film-uppering mechanism and a film-collecting mechanism are also movably arranged in the sampling box, and the device allows gas to enter the sampling box for sampling through the mutual cooperation of the air inlet cylinder, the exhaust pipe and the fan. The device realizes the movement of the filter membrane through the mutual cooperation of the film-uppering mechanism and the film-collecting mechanism. After each sampling, the filter membrane in the filter box can be replaced by moving the filter membrane, which is more convenient to use.

[0018] The sampling box of the device is respectively provided with a first movable door and a second movable door on one side of the film collecting mechanism and the film loading mechanism; the film loading roller and the buffer roller are respectively connected by a first rotating shaft and a second rotating shaft, and the first rotating shaft is engaged with the elastic socket on the sampling box. The above arrangement facilitates the replacement of the film loading roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0021] Figure 2 It is a schematic diagram of the internal three-dimensional structure of Example 1 of the utility model;

[0022] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 4 yes Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 5 It is a structural schematic diagram of the elastic card seat;

[0025] Figure 6 It is a schematic diagram of the connection between the driving shaft and the driven shaft;

[0026] In the figure, 1. sampling box; 2. exhaust pipe; 3. fan; 4. filter box; 5. filter membrane slot; 6. exhaust port; 7. air inlet tube; 8. air inlet; 9. film upper roller; 10. buffer roller; 11. first rotating shaft; 12. second rotating shaft; 13. elastic card seat; 14. base; 15. mounting hole; 16. card entrance; 17. film collecting roller; 18. motor; 19. driven shaft; 20. driving shaft; 21. slot; 22. filter membrane; 23. second movable door; 24. controller; 25. display screen; 26. control button; 27. first support seat; 28. second support seat; 29. ​​handle; 30. rain cover. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0030] Example 1

[0031] like Figures 1 to 6 As shown, a sampling device based on atmospheric particulate matter detection includes a sampling box 1, an exhaust pipe 2 is arranged inside the sampling box 1, a fan 3 is arranged on the exhaust pipe 2, one end of the exhaust pipe 2 is connected with a filter box 4, and a filter membrane slot 5 is arranged on the side wall of the filter box 4; the other end of the exhaust pipe 2 is connected with an exhaust port 6 at the bottom of the sampling box 1; the upper part of the filter box 4 is also connected with an air inlet cylinder 7, and a plurality of air inlets 8 are circumferentially arranged on the upper part of the air inlet cylinder 7; when the fan 3 is started, the airflow will enter the air inlet cylinder 7 through the air inlet 8, and then pass through the filter box 4 and the exhaust pipe 2, and finally be discharged from the exhaust port 6 at the bottom of the sampling box 1. Due to the presence of the filter membrane 22 in the filter box 4, the particulate pollutants in the air will be collected, which is convenient for subsequent detection.

[0032] The sampling box 1 is also provided with a film-loading mechanism and a film-collecting mechanism. The film-loading mechanism includes a film-loading roller 9 and a buffer roller 10 respectively arranged on both sides of the filter box 4. The film-loading roller 9 and the buffer roller 10 are respectively rotatably arranged in the sampling box 1 through a first rotating shaft 11 and a second rotating shaft 12; an elastic holder 13 is arranged on the sampling box 1, and the first rotating shaft 11 is engaged with the elastic holder 13. When the filter membrane 22 is used up, the film-loading roller 9 can be removed through the first rotating shaft 11 for direct replacement.

[0033] Furthermore, in this embodiment, the elastic socket 13 includes a base 14 and a mounting hole 15 arranged on the base 14, and the base 14 is also provided with a card entrance 16 connected to the mounting hole 15, the diameter of the card entrance 16 is smaller than the diameter of the first rotating shaft 11, and the diameter of the mounting hole 15 is larger than the diameter of the first rotating shaft 11.

[0034] The film collection mechanism includes a detachable film collection roller 17 arranged below the buffer roller 10 and a motor 18 driving the film collection roller 17 to rotate; one end of the filter film 22 stored on the upper film roller 9 passes through the filter film notch 5 on the filter box 4 and bypasses the buffer roller 10 and is wrapped around the surface of the film collection roller 17; a driven shaft 19 is arranged on the film collection roller 17, and the output shaft of the motor 18 is connected to the driving shaft 20, and a slot 21 adapted to the driven shaft 19 is arranged on the driving shaft 20. After sampling, the film collection roller 17 can be directly removed, and the filter film 22 with particulate pollutants collected can be taken out, which is convenient to use. Specifically, when in use, after sampling at one position is completed, the film collection roller 17 can be driven by the motor 18 to rotate, so that the filter film 22 with particulate pollutants collected can be moved out of the filter box 4. At this time, the filter film 22 in the filter box 4 is a brand new filter film, which is convenient for sampling at the next position, thereby satisfying the sampling of different places, making the sampling more comprehensive and improving the detection accuracy.

[0035] The sampling box 1 is provided with a first movable door (not shown) and a second movable door 23 on one side of the film collecting mechanism and the film loading mechanism respectively;

[0036] The sampling box 1 further includes a controller 24 disposed on the sampling box 1 . A display screen 25 and a plurality of control buttons 26 are disposed on the surface of the controller 24 . The motor 18 is electrically connected to the controller 24 .

[0037] Furthermore, in this embodiment, the driven shaft 19 and the motor 18 are supported and fixed by a first support base 27 and a second support base 28 respectively.

[0038] Furthermore, in this embodiment, both the first movable door 22 and the second movable door 23 are provided with handles 29 .

[0039] Furthermore, in this embodiment, a rain cover 30 is also provided on the top of the air inlet cylinder 7 .

[0040] In addition, it should be understood that after reading the contents taught in the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A sampling device based on atmospheric particulate matter detection, characterized in that: It comprises a sampling box, wherein an air extraction pipe is arranged inside the sampling box, a fan is arranged on the air extraction pipe, one end of the air extraction pipe is connected with a filter box, a filter membrane notch is arranged on the side wall of the filter box; the other end of the air extraction pipe is connected with an exhaust port at the bottom of the sampling box; The sampling box is also provided with a film-applying mechanism and a film-collecting mechanism, wherein the film-applying mechanism comprises a film-applying roller and a buffer roller respectively arranged on both sides of the filtering box, and the film-collecting mechanism comprises a detachable film-collecting roller arranged below the buffer roller and a motor driving the film-collecting roller to rotate; One end of the filter membrane stored on the upper membrane roller passes through the filter membrane notch on the filter box body, bypasses the buffer roller and is wound around the surface of the membrane collection roller; The upper part of the filter box is also connected to an air inlet cylinder, and the upper part of the air inlet cylinder is circumferentially provided with a plurality of air inlets; the sampling box is provided with a first movable door and a second movable door on one side of the film collecting mechanism and the film placing mechanism respectively; It also includes a controller arranged on the sampling box, a display screen and a plurality of control buttons are arranged on the surface of the controller, and the motor is electrically connected to the controller.

2. A sampling device based on atmospheric particulate matter detection according to claim 1, characterized in that: The upper film roller and the buffer roller are rotatably arranged in the sampling box body through a first rotating shaft and a second rotating shaft respectively.

3. A sampling device based on atmospheric particulate matter detection according to claim 2, characterized in that: The sampling box is provided with an elastic holder, and the first rotating shaft is engaged and connected with the elastic holder.

4. A sampling device based on atmospheric particulate matter detection according to claim 3, characterized in that: The elastic card seat includes a base and a mounting hole arranged on the base. The base is also provided with a card entrance connected to the mounting hole. The diameter of the card entrance is smaller than the diameter of the first rotating shaft, and the diameter of the mounting hole is larger than the diameter of the first rotating shaft.

5. A sampling device based on atmospheric particulate matter detection according to claim 1, characterized in that: The film collecting roller is provided with a driven shaft, the output shaft of the motor is connected with a driving shaft, and the driving shaft is provided with a slot adapted to the driven shaft.

6. A sampling device based on atmospheric particulate matter detection according to claim 5, characterized in that: The driven shaft and the motor are supported and fixed by a first supporting seat and a second supporting seat respectively.

7. A sampling device based on atmospheric particulate matter detection according to claim 1, characterized in that: The first movable door and the second movable door are both provided with handles.

8. The sampling device based on atmospheric particulate matter detection according to claim 1 is characterized in that: A rain cover is also provided on the top of the air inlet cylinder.

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