Air pollution detection equipment

Abstract

The utility model discloses air pollution detection equipment, which belongs to the technical field of air pollution detection, and comprises a detection support and a detector body arranged at the upper end of the detection support, the detector body is provided with an air inlet and an air outlet, the air outlet is connected with an air outlet pipe, the air inlet is rotatably connected with an air inlet pipe, and the air inlet pipe is rotatably connected with an air outlet pipe. The air inlet pipe is arranged in an inverted L shape, the end part of the air inlet pipe is connected with an air exhaust mechanism, the detector body is provided with a driving assembly for driving the air inlet pipe to rotate, the outer side of the air exhaust mechanism is sleeved with an organ cover, and a control valve is arranged in the air outlet pipe. According to the air pollution detection equipment provided by the utility model, air at different heights can be subjected to air extraction detection, so that the accuracy of an air quality detection result is ensured, and raised dust can be effectively prevented from being diffused to the air inlet and the air outlet.

Description

Technical Field

[0001] The utility model belongs to the technical field of air pollution detection, in particular to an air pollution detection device. Background Art

[0002] Air testing is a technical process of analyzing and testing the excessive levels of pollutants in the air. The key objects of testing are dust and air compounds in the air. The air testing device can analyze the pollution status of various indicators in the air.

[0003] The existing air pollution detection devices have the following shortcomings: when detecting air quality, the detection height is fixed, and it is impossible to detect air at different heights, which affects the effect of air quality detection; and when the existing air pollution detection devices are not in use, dust can easily spread to the air inlet and outlet. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an air pollution detection device, which can perform air extraction detection on the air at different heights, ensure the accuracy of the air quality detection results, and effectively prevent dust from spreading to the air inlet and outlet.

[0005] The technical solution adopted by the utility model is as follows: an air pollution detection device provided by the utility model comprises a detection bracket and a detector body installed on the upper end of the detection bracket, the detector body is provided with an air inlet and an air outlet, the air outlet is connected to an air outlet pipe, the air inlet is rotatably connected to an air inlet pipe, the air inlet is arranged in an inverted L shape, the end of the air inlet pipe is connected to an exhaust mechanism, the detector body is provided with a driving component for driving the air inlet pipe to rotate, the air exhaust mechanism is sleeved with an accordion cover on the outer side, the accordion cover blocks the air exhaust mechanism to avoid To prevent dust from diffusing to the air inlet, a control valve is provided in the air outlet pipe, which is controlled by the control valve to open the air outlet pipe only when the detector body is performing detection, and closed when no detection is performed, to prevent dust from diffusing into the detector body through the air outlet pipe; the control valve comprises an air outlet piston and a spring, the end of the air outlet pipe is threadedly connected with a pipe cover, and exhaust holes are distributed in an array in the middle of the circumferential side wall of the air outlet pipe, the air outlet piston is tightly fitted and slidably arranged in the air outlet pipe, the spring is arranged between the air outlet piston and the pipe cover, and the spring pushes the air outlet piston to slide along the air outlet pipe toward the air outlet.

[0006] When not testing, there is no airflow in the air outlet pipe, and the spring pushes the air outlet piston to remain between the exhaust hole and the air outlet and block the exhaust hole and the air outlet, thereby closing the air outlet pipe. When the detector body is testing, the vacuum mechanism draws air into the detector body through the air inlet pipe for testing. The tested gas flows to the air outlet pipe, and the air pressure in the air outlet pipe increases, thereby pushing the air outlet piston to move to the side of the exhaust hole away from the air outlet. At this time, the exhaust hole is connected to the detector body through the air outlet pipe and the air outlet, and the air outlet pipe opens automatically. When the detector body detects exhaust, the airflow pushes the air outlet piston to overcome the elastic movement of the spring and automatically opens the air outlet pipe, thereby preventing pollutants from diffusing into the detector body through the air outlet pipe. The tested airflow is discharged through the air outlet pipe and the exhaust hole, and the automatic opening and closing of the air outlet pipe is achieved by air pressure and a spring.

[0007] Among them, the driving assembly includes a driving motor, a worm and a worm wheel. The worm wheel is coaxially fixed to the end of the intake pipe close to the air inlet. The driving motor is arranged on the side wall of the detector body. The worm is coaxially fixed to the output shaft of the driving motor. The worm and the worm wheel are meshed. The driving motor drives the worm wheel to rotate through the worm, and the worm wheel drives the intake pipe to rotate around the air inlet. The worm and the worm wheel realize a reduction transmission, so that the intake pipe rotates slowly and uniformly around the air inlet, which is convenient for detecting air at different heights.

[0008] Among them, the exhaust mechanism includes an exhaust chamber threadedly connected to the end of the air inlet pipe, the exhaust chamber is connected to the air inlet pipe, the exhaust chamber is conically arranged at one end close to the air inlet pipe, a rotating shaft is arranged in the exhaust chamber, an exhaust fan is fixedly connected to the rotating shaft, and exhaust holes are arranged in an array on the circumferential side wall of the exhaust chamber away from one end of the air inlet pipe. When the exhaust fan rotates, the air flow is drawn into the air inlet pipe through the exhaust holes and sent into the detector body for detection.

[0009] Furthermore, a sliding rod is provided on the side of the air outlet piston away from the air outlet, a sliding hole is penetrated by the shaft of the tube cover, a limiting sliding tube is coaxially provided in the sliding hole, the limiting sliding tube extends from the tube cover to the inside of the air outlet pipe, one end of the sliding rod is connected to the air outlet piston, and the other end of the sliding rod slides through the limiting sliding tube and the sliding hole and then extends out of the tube cover.

[0010] Preferably, a guide slide hole arranged axially is provided on the side wall of the limiting slide tube, and a guide block is provided on the side wall of the slide rod. The guide block is slidably clamped in the guide slide hole. A pull ring is provided at the end of the slide rod away from the air outlet piston. The pull ring is used to manually pull the air outlet piston, thereby manually opening the air outlet pipe. When the guide block is pulled out of the limiting slide tube, the slide rod is rotated to make the guide block and the guide slide hole misaligned, so that the slide rod can be limited, thereby limiting the air outlet piston to the side of the exhaust hole close to the pipe cover, so that the exhaust hole is connected to the detector body through the exhaust pipe.

[0011] Preferably, an exhaust motor is provided on the outer side wall of the exhaust chamber, and the exhaust motor is transmission-connected to the rotating shaft. The exhaust motor drives the exhaust fan to rotate via the rotating shaft to extract air.

[0012] Among them, a sliding magnetic ring is provided at one end of the accordion cover away from the air inlet pipe, a magnetic layer is provided on the outer wall of the air pumping cavity, the sliding magnetic ring is slidably sleeved on the outside of the air pumping cavity, the sliding magnetic ring is magnetically attracted to the magnetic layer, and a sealing ring is provided on the inside of the sliding magnetic ring.

[0013] When no inspection is performed, the sliding magnetic ring is magnetically attached to the end of the air extraction chamber away from the air inlet pipe, and the accordion cover is unfolded to block the air extraction hole. When inspection is required, the sliding magnetic ring is manually moved so that the sliding magnetic ring is magnetically attached to the end of the air extraction chamber close to the air inlet pipe. At this time, the accordion cover is folded and the air extraction hole is exposed.

[0014] As a further improvement of the present solution, a cylindrical air filter is provided between the air outlet and the air outlet piston, and the air filter filters the detected gas to facilitate the discharge of clean gas.

[0015] As a further improvement of the present solution, a protective cover is provided on the outer cover of the driving assembly, and the air intake pipe rotates and passes through the protective cover.

[0016] Furthermore, a conductive slip ring is connected between the protective cover and the air inlet pipe, and the conductive slip ring is electrically connected to the air extraction motor.

[0017] Preferably, a display and a plurality of switch buttons are provided on the side wall of the detector body, the display displays the detection results of the detector body, and the switch buttons facilitate the control of the detector body, the vacuum motor and the drive motor.

[0018] The beneficial effects achieved by the utility model using the above structure are as follows:

[0019] 1. The air intake pipe is set in an inverted L shape. At the same time, a driving component for driving the air intake pipe to rotate is set on one side of the air intake pipe. The driving motor drives the worm wheel to rotate through the worm, and the worm wheel drives the air intake pipe to rotate around the air inlet. The worm and the worm wheel realize the reduction transmission, so that the air intake pipe rotates slowly and evenly around the air inlet, which is convenient for detecting air at different heights.

[0020] 2. An exhaust mechanism is provided at the end of the air inlet pipe, and the exhaust fan is driven by the exhaust motor to rotate, thereby drawing the air flow into the detector body for detection.

[0021] 3. The air outlet pipe is automatically opened and closed by air pressure and a spring. When there is no airflow, the spring pushes the air outlet piston to remain between the exhaust hole and the air outlet and blocks the exhaust hole and the air outlet, closing the air outlet pipe. When the detector body is exhausted, the airflow pushes the air outlet piston to overcome the elasticity of the spring and move to the side of the exhaust hole away from the air outlet. At this time, the exhaust hole is connected to the detector body through the air outlet pipe and the air outlet, and the air outlet pipe is automatically opened, thereby preventing pollutants from diffusing into the detector body through the air outlet pipe.

[0022] 4. An air filter is set between the air outlet and the air outlet piston to filter the detected gas and facilitate the discharge of clean gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an air pollution detection device provided by the utility model;

[0024] Figure 2 A schematic structural diagram of an air pollution detection device provided by the utility model from another perspective;

[0025] Figure 3 A schematic diagram of the combined structure of the detector body, air intake pipe, air extraction mechanism and drive assembly provided by the utility model;

[0026] Figure 4 A schematic diagram of the combined mechanism of the air intake pipe, the worm gear, the conductive slip ring and the air extraction mechanism provided by the utility model;

[0027] Figure 5 A cross-sectional view of the air intake pipe, worm gear and air extraction mechanism provided by the utility model;

[0028] Figure 6 A schematic diagram of the structure of the air outlet pipe and the control valve provided by the utility model;

[0029] Figure 7 A cross-sectional view of the air outlet pipe and the control valve provided by the utility model;

[0030] Figure 8 This is an exploded view of the air outlet pipe and the control valve provided by the utility model.

[0031] Among them, 1. detection bracket, 2. detector body, 3. air inlet, 4. air outlet, 5. air outlet pipe, 6. air inlet pipe, 7. exhaust mechanism, 8. drive assembly, 9. drive motor, 10. worm, 11. worm gear, 12. accordion cover, 13. control valve, 14. exhaust chamber, 15. rotating shaft, 16. exhaust fan, 17. exhaust hole, 18. exhaust motor, 19. magnetic layer, 20. sliding magnetic ring, 21. exhaust piston, 22. sliding rod, 23. spring, 24. pipe cover, 25. exhaust hole, 26. sliding hole, 27. limiting sliding pipe, 28. guide sliding hole, 29. guide block, 30. pull ring, 31. air filter element, 32. protective cover, 33. conductive slip ring, 34. display, 35. switch button.

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] Embodiment 1, as Figure 1-Figure 3As shown, an air pollution detection device provided by the utility model comprises a detection bracket 1 and a detector body 2 installed at the upper end of the detection bracket 1, the detector body 2 is provided with an air inlet 3 and an air outlet 4, the air outlet 4 is connected to an air outlet pipe 5, the air inlet 3 is rotatably connected to an air inlet pipe 6, the air inlet pipe 6 is arranged in an inverted L shape, the end of the air inlet pipe 6 is connected to an exhaust mechanism 7, the detector body 2 is provided with a driving component 8 for driving the air inlet pipe 6 to rotate; the air exhaust mechanism 7 is sleeved with an accordion cover 12 on the outer side, the accordion cover 12 blocks the air exhaust mechanism 7, the air outlet pipe 5 is provided with a control valve 13, the air outlet pipe 5 is controlled by the control valve 13 to be opened only when the detector body 2 is performing detection, thereby preventing dust from diffusing into the detector body 2 through the air outlet pipe 5 when no detection is performed.

[0036] See also Figure 3 The driving assembly 8 includes a driving motor 9, a worm 10 and a worm wheel 11. The worm wheel 11 is coaxially fixed to the end of the intake pipe 6 near the air inlet 3. The driving motor 9 is arranged on the side wall of the detector body 2. The worm 10 is coaxially fixed to the output shaft of the driving motor 9. The worm 10 is meshed with the worm wheel 11. The driving motor 9 drives the worm wheel 11 to rotate through the worm 10. The worm wheel 11 drives the intake pipe 6 to rotate around the air inlet 3. The worm 10 and the worm wheel 11 realize a reduction transmission, so that the intake pipe 6 rotates slowly and evenly around the air inlet 3, which is convenient for detecting air at different heights.

[0037] like Figure 1-Figure 3 As shown, a protective cover 32 is provided on the outer side cover of the driving assembly 8, and the air intake pipe 6 rotates and passes through the protective cover 32.

[0038] See also Figure 1 , Figure 3-Figure 5 The exhaust mechanism 7 includes an exhaust chamber 14 threadedly connected to the end of the air inlet pipe 6, the exhaust chamber 14 is communicated with the air inlet pipe 6, the exhaust chamber 14 is conically arranged at one end close to the air inlet pipe 6, a rotating shaft 15 is rotatably arranged in the exhaust chamber 14, an exhaust fan 16 is fixedly arranged on the rotating shaft 15, and exhaust holes 17 are distributed in an array on the circumferential side wall of the exhaust chamber 14 away from one end of the air inlet pipe 6. When the exhaust fan 16 rotates, the air flow is drawn into the air inlet pipe 6 through the exhaust holes 17 and sent into the detector body 2 for detection.

[0039] like Figure 1-Figure 5As shown, an exhaust motor 18 is provided on the outer wall of the exhaust chamber 14, and the exhaust motor 18 is transmission-connected to the rotating shaft 15. The exhaust motor 18 drives the exhaust fan 16 to rotate through the rotating shaft 15 to exhaust air; a conductive slip ring 33 is connected between the protective cover 32 and the air inlet pipe 6, and the conductive slip ring 33 is electrically connected to the exhaust motor 18. The conductive slip ring 33 is a prior art and will not be described here; a display 34 and a plurality of switch buttons 35 are provided on the side wall of the detector body 2, and the display 34 displays the detection results of the detector body 2. The switch buttons 35 facilitate the control of the detector body 2, the exhaust motor 18 and the drive motor 9.

[0040] like Figure 1-Figure 5 As shown, a sliding magnetic ring 20 is provided at the end of the accordion cover 12 away from the air inlet pipe 6, a magnetic layer 19 is provided on the outer wall of the air pumping cavity 14, and through holes corresponding to the air pumping holes 17 are provided on the magnetic layer 19, and the sliding magnetic ring 20 is slidably sleeved on the outside of the air pumping cavity 14, the sliding magnetic ring 20 and the magnetic layer 19 are magnetically attracted to each other, and the magnetic layer 19 can make the sliding magnetic ring 20 magnetically adsorbed at any position of the air pumping cavity 14, and a sealing ring is provided on the inner side of the sliding magnetic ring 20. When no detection is performed, the sliding magnetic ring 20 is magnetically adsorbed to the end of the air pumping cavity 14 away from the air inlet pipe 6, and the accordion cover 12 is unfolded to block the air pumping holes 17. When detection is required, the sliding magnetic ring 20 is manually moved so that the sliding magnetic ring 20 is magnetically adsorbed to the end of the air pumping cavity 14 close to the air inlet pipe 6. At this time, the accordion cover 12 is folded and the air pumping holes 17 are exposed.

[0041] See also Figure 2 , Figure 6-Figure 8 The control valve 13 includes an air outlet piston 21 and a spring 23. The end of the air outlet pipe 5 is threadedly connected with a pipe cover 24. The middle part of the circumferential side wall of the air outlet pipe 5 is provided with an array of exhaust holes 25. The air outlet piston 21 is tightly fitted and slidably arranged in the air outlet pipe 5. The spring 23 is arranged between the air outlet piston 21 and the pipe cover 24. The spring 23 pushes the air outlet piston 21 to slide along the air outlet pipe 5 toward the air outlet port 4; a sliding rod 22 is provided on the side of the air outlet piston 21 away from the air outlet port 4. A sliding hole 26 is penetrated through the shaft of the pipe cover 24. A through-limiting sliding tube 27 is coaxially provided in the sliding hole 26. The limiting sliding tube 27 extends from the pipe cover 24 to the inner side of the air outlet pipe 5. One end of the sliding rod 22 is connected to the air outlet piston 21, and the other end of the sliding rod 22 slides through the limiting sliding tube 27 and the sliding hole 26 and then extends out of the pipe cover 24.

[0042] See also Figure 2 and Figure 7 A cylindrical air filter element 31 is provided between the air outlet 4 and the air outlet piston 21. The air filter element 31 filters the detected gas to facilitate the discharge of clean gas.

[0043] During specific use, when performing air pollution detection, the sliding magnetic ring 20 is manually moved so that the sliding magnetic ring 20 is magnetically attracted to one end of the air extraction chamber 14 close to the air inlet pipe 6. At this time, the accordion cover 12 is folded, and the air extraction hole 17 is exposed. The detector body 2, the air extraction motor 18 and the drive motor 9 are started by the switch button 35. In the initial state, the spring 23 pushes the air outlet piston 21 to remain between the exhaust hole 25 and the air outlet 4 and blocks the exhaust hole 25 and the air outlet 4. The air outlet pipe 5 is in a closed state, and the drive motor 9 drives the worm 10 to The worm gear 11 rotates, and the worm gear 11 drives the air intake pipe 6 to rotate around the air intake port 3. The worm 10 and the worm gear 11 realize a reduction transmission, so that the air intake pipe 6 rotates slowly and uniformly around the air intake port 3. The height of the end of the air intake pipe 6 changes with the rotation, which is convenient for exhaust detection of air at different heights. At the end of the air intake pipe 6, the exhaust motor 18 drives the exhaust fan 16 to rotate through the rotating shaft 15. When the exhaust fan 16 rotates, the air flow is sucked into the air intake pipe 6 through the exhaust hole 17 and sent to the detector body 2 for detection. The detection result is displayed on the display in real time. 34, the detected gas flows to the air outlet pipe 5, the air filter element 31 filters the detected gas, and the filtered gas flows to the air outlet piston 21. The air pressure in the air outlet pipe 5 increases, thereby pushing the air outlet piston 21 to move to the side of the exhaust hole 25 away from the air outlet 4, the slide bar 22 retracts into the limit slide pipe 27, and the spring 23 is compressed and deformed. At this time, the exhaust hole 25 is connected with the detector body 2 through the air outlet pipe 5 and the air outlet 4, the air outlet pipe 5 is automatically opened, and the detected air flow is discharged through the air outlet pipe 5 and the exhaust hole 25. When there is no air flow, the spring 23 is opened. The spring 23 pushes the air outlet piston 21 to move between the air outlet 4 and the exhaust hole 25, blocking the exhaust hole 25 and the air outlet 4, closing the air outlet pipe 5, and realizing automatic opening and closing of the air outlet pipe 5 through air pressure and the spring 23, thereby preventing pollutants from diffusing into the detector body 2 through the air outlet pipe 5. After the detection is completed, the sliding magnetic ring 20 is moved so that the sliding magnetic ring 20 is magnetically adsorbed to the end of the exhaust chamber 14 away from the air inlet pipe 6. At this time, the accordion cover 12 is unfolded to block the exhaust hole 17 to prevent dust from diffusing from the air inlet 3 into the detector body 2.

[0044] Embodiment 2: This embodiment is different from the previous embodiment in that: Figure 1-Figure 8 As shown, a guide slide hole 28 arranged axially is provided on the side wall of the limiting slide tube 27, a guide block 29 is provided on the side wall of the slide rod 22, and the guide block 29 is slidably clamped in the guide slide hole 28, and a pull ring 30 is provided at one end of the slide rod 22 away from the air outlet piston 21.

[0045] When in use, the air outlet piston 21 can also be manually pulled through the pull ring 30 to manually open the air outlet pipe 5. When the guide block 29 is pulled out from the limiting slide tube 27, the slide rod 22 is rotated to make the guide block 29 and the guide slide hole 28 misaligned, so that the slide rod 22 can be limited, thereby limiting the air outlet piston 21 to the side of the exhaust hole 25 close to the pipe cover 24, so that the exhaust hole 25 is connected with the detector body 2 through the exhaust pipe 5 and the outlet port 4.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An air pollution detection device, Features: The invention comprises a detection bracket and a detection instrument body installed on the upper end of the detection bracket, the detection instrument body is provided with an air inlet and an air outlet, the air outlet is connected with an air outlet pipe, the air inlet is rotatably connected with the air inlet, the air inlet is arranged in an inverted L shape, the end of the air inlet pipe is connected with an air suction mechanism, the detection instrument body is provided with a driving component for driving the air inlet pipe to rotate, an accordion cover is sleeved on the outer side of the air suction mechanism, and a control valve is arranged in the air outlet pipe; the control valve comprises an air outlet piston and a spring, the end of the air outlet pipe is threadedly connected with a pipe cover, exhaust holes are distributed in an array in the middle of the circumferential side wall of the air outlet pipe, the air outlet piston is tightly fitted and slidably arranged in the air outlet pipe, the spring is arranged between the air outlet piston and the pipe cover, and the spring pushes the air outlet piston to slide along the air outlet pipe toward the air outlet.

2. An air pollution detection device according to claim 1, Features: The exhaust mechanism includes an exhaust chamber threadedly connected to the end of the air inlet pipe, the exhaust chamber is communicated with the air inlet pipe, the exhaust chamber is conically arranged at one end close to the air inlet pipe, a rotating shaft is arranged for rotation in the exhaust chamber, an exhaust fan is fixedly connected to the rotating shaft, and exhaust holes are arranged in an array on the circumferential side wall of the exhaust chamber away from one end of the air inlet pipe.

3. An air pollution detection device according to claim 2, Features: The driving assembly includes a driving motor, a worm and a worm wheel. The worm wheel is coaxially fixed to the end of the intake pipe close to the air inlet. The driving motor is arranged on the side wall of the detector body. The worm is coaxially fixed to the output shaft of the driving motor, and the worm is meshed with the worm wheel.

4. An air pollution detection device according to claim 3, Features: A sliding rod is provided on the side of the air outlet piston away from the air outlet, a sliding hole is penetrated through the shaft of the tube cover, a limiting sliding tube is coaxially provided in the sliding hole, the limiting sliding tube extends from the tube cover to the inner side of the air outlet pipe, one end of the sliding rod is connected to the air outlet piston, and the other end of the sliding rod slides through the limiting sliding tube and the sliding hole and then extends out of the tube cover.

5. An air pollution detection device according to claim 4, Features: A guide sliding hole arranged axially is arranged on the side wall of the position-limiting sliding tube, a guide block is arranged on the side wall of the sliding rod, the guide block is slidably clamped in the guide sliding hole, and a pull ring is arranged at one end of the sliding rod away from the air outlet piston.

6. An air pollution detection device according to claim 5, Features: An air pumping motor is arranged on the outer side wall of the air pumping cavity, and the air pumping motor is drivingly connected with the rotating shaft.

7. An air pollution detection device according to claim 2, Features: A sliding magnetic ring is provided at one end of the accordion cover away from the air inlet pipe, a magnetic layer is provided on the outer wall of the air pumping cavity, the sliding magnetic ring is slidably sleeved on the outside of the air pumping cavity, the sliding magnetic ring is magnetically attracted to the magnetic layer, and a sealing ring is provided on the inner side of the sliding magnetic ring.

8. An air pollution detection device according to claim 6, Features: A protective cover is provided on the outer cover of the driving component, the air intake pipe rotates and penetrates the protective cover, a conductive slip ring is connected between the protective cover and the air intake pipe, and the conductive slip ring is electrically connected to the air extraction motor.

9. An air pollution detection device according to claim 8, Features: The side wall of the detector body is provided with a display and a plurality of switch buttons.

10. An air pollution detection device according to claim 1, Features: An air filter element is arranged between the air outlet and the air outlet piston.

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