Atmospheric pollution monitoring device

Abstract

The invention discloses an atmospheric pollution monitoring device. The device comprises a movable base, a windward module and a time-sharing sampling module, the windward module comprises a rotary table, a support, a disc, a wind indicator, an angle sensor, a first driving part and a second driving part, the disc is fixed to the support, the wind indicator is connected with the angle sensor, the first driving part enables the disc to face the wind direction, and the second driving part can vertically move the support. The time-sharing sampling module comprises a rotating ring, sampling cylinders, an air extracting pump, a detection probe and a third driving part, a plurality of sampling cylinders are arranged on the rotating ring, each sampling cylinder is provided with a cylinder body, a cylinder cover and a fourth driving part, and the cylinder cover can be opened and closed. The disc is provided with an air exhaust position and a detection position, the air exhaust pump and the detection probe are respectively arranged at corresponding positions, and the sampling cylinder sequentially passes through the two positions when rotating, so that air exhaust sampling and detection are realized. According to the device, the time resolution and the space dimension of monitoring are improved through a'time cavity division + space layering 'sampling matrix and a windward module, so that the detection result is more accurate and comprehensive.

Description

Technical Field

[0001] The present invention relates to the field of atmosphere monitoring, and in particular to an atmosphere pollution monitoring device. Background Art

[0002] In today's society, air pollution is an increasingly serious problem, having widespread and profound impacts on human health, the ecological environment, and the socioeconomic landscape. Accurate and timely monitoring of air pollution is crucial for developing effective environmental protection policies, implementing targeted governance measures, and safeguarding public health. However, existing air pollution monitoring devices have numerous practical limitations, making them unable to meet the growing monitoring needs.

[0003] For example, many conventional monitoring devices can only perform continuous sampling at a fixed point. They cannot provide accurate data support for hourly variations in air pollution, such as dust pollution during peak hours in the morning and evening, and industrial emissions at night, making it difficult to meet the requirements for refined monitoring of air pollution. Moreover, the sampling methods of these devices are relatively simple, and the detection probes are directly exposed to the atmosphere, which is easily disturbed by the surrounding environment, resulting in the accuracy and reliability of the test results being affected. Traditional equipment also generally lacks an effective adaptive mechanism for adjusting the sampling direction and is unable to automatically adjust the sampling direction according to changes in wind direction. This limits the representativeness of the sampled samples and affects the accuracy and reliability of the monitoring results.

[0004] In addition, most existing monitoring devices can only monitor the atmosphere at a specific altitude and cannot achieve simultaneous sampling of the atmosphere at different altitudes. However, the distribution of atmospheric pollutants at different altitudes may vary significantly. For example, some industrial emission sources may emit pollutants at higher altitudes, and the vertical diffusion and distribution of these pollutants are crucial for accurately assessing the scope of pollution impact and formulating reasonable monitoring strategies. Therefore, monitoring devices that lack spatial stratified sampling capabilities cannot provide comprehensive atmospheric pollution data, limiting in-depth research and effective governance of atmospheric pollution. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an air pollution monitoring device to address the problem that traditional monitoring devices are unable to comprehensively and accurately monitor the changes in air pollutants over different time periods and the distribution of air pollutants at different altitudes.

[0006] The technical solution of the present invention is as follows: an air pollution monitoring device, characterized by comprising: a base, a windward module and a time-sharing sampling module;

[0007] The base is a movable base, and a main controller is provided on the base;

[0008] The windward module includes a turntable, a bracket, a disc, a wind vane, an angle sensor, a first driving member and a second driving member. The turntable is placed horizontally and rotatably mounted on the base. The bracket is provided on the turntable, and a vertical disc is fixed on the bracket. The front side of the disc is provided with the time-sharing sampling module. The wind vane is freely rotatably mounted on the base. The rotating shaft of the wind vane is connected to the angle sensor. The angle sensor, the first driving member and the second driving member are respectively connected to the main controller. The first driving member is connected to the turntable. The first driving member is used to drive the turntable to rotate so that the front side of the disc always faces the direction indicated by the wind vane. The second driving member is connected to the bracket to drive the bracket to move up and down;

[0009] The time-sharing sampling module includes a rotating ring, a sampling cylinder, an air pump, a detection probe and a third driving member, the rotating ring is rotatably arranged on the disc, the third driving member is connected to the rotating ring to drive the rotating ring to rotate around the central axis of the disc, the rotating ring is provided with a plurality of sampling cylinders evenly spaced along the circumference of the rotating ring, the sampling cylinders are located on the front side of the disc, the sampling cylinder includes a cylinder body, a cylinder cover and a fourth driving member, the front and rear sides of the cylinder body are open, the rear side of the cylinder body abuts against the disc and is closed by the disc, the front side of the cylinder body is provided with the cylinder cover, and the fourth driving member is connected to the cylinder cover to drive the cylinder cover to open or close;

[0010] The disc is provided with an air extraction position and a detection position, the air extraction pump is provided at the air extraction position, and the detection probe is provided at the detection position. Each sampling cylinder will pass through the air extraction position and the detection position when rotating with the rotating ring; at the air extraction position, the cylinder cover is opened, and the air extraction pump extracts air to make the air flow through the sampling cylinder; at the detection position, the cylinder cover is closed, and the detection probe detects the air in the sampling cylinder.

[0011] Furthermore, a roller is provided at the bottom of the base.

[0012] Furthermore, the first driving member is a first motor, the first motor is fixed to the bottom of the base, and the motor shaft of the first motor is connected to the turntable.

[0013] Furthermore, the second driving member is an electric telescopic rod, which is vertically arranged on the turntable, and the bracket is provided at the top end of the electric telescopic rod.

[0014] Furthermore, an annular guide rail is provided on the inner circumferential wall of the rotating ring, and an annular rotating groove is provided on the outer circumferential wall of the disc, and the guide rail and the rotating groove are rotatably matched; the third driving member includes a second motor and a gear, the second motor is fixedly arranged on the rear side of the disc, the motor shaft of the second motor is connected to the gear, and a plurality of teeth are provided on the inner circumferential wall of the rotating ring to form a gear ring, and the gear is meshed with the gear ring.

[0015] Furthermore, the air extraction position is provided with a first avoidance port, the detection position is provided with a second avoidance port, the air extraction pump is provided at the back of the first avoidance port, and the detection probe is provided at the back of the second avoidance port.

[0016] Furthermore, the number of the sampling cylinders is n, where n is an integer between 2 and 24 that is divisible by 24.

[0017] Furthermore, the fourth driving member includes an electromagnet, a permanent magnet, a first electrode sheet, a second electrode sheet and a reset member;

[0018] The front side of the cylinder is provided with a reset member connected to the cylinder cover, the front side of the cylinder is inlaid with the electromagnet, the rear side of the cylinder cover is provided with the permanent magnet, the rear side of the cylinder is inlaid with a first electrode sheet electrically connected to the electromagnet, and the air extraction position is provided with a second electrode sheet electrically connected to the main controller;

[0019] When the sampling tube rotates to the air extraction position, the first electrode sheet abuts against the second electrode sheet and is connected, the electromagnet is energized to generate a magnetic field and repel the permanent magnet to push open the tube cover.

[0020] When the sampling cylinder leaves the air extraction position, the first electrode sheet is separated from the second electrode sheet, the electromagnet is powered off, and the reset member pulls the cylinder cover to reset and close the cylinder body.

[0021] Furthermore, the reset member includes a reset spring, a guide rod, a guide seat and an anti-slip plate. The outer peripheral edge of the cylinder cover is provided with a guide rod extending backward, and the outer peripheral wall of the cylinder body is provided with a guide seat with a hole. The guide rod can be slidably passed through the guide seat, and the rear end of the guide rod is provided with the anti-slip plate. The guide rod is sleeved with a reset spring, the rear end of the reset spring is connected to the guide seat, and the front end of the reset spring is connected to the cylinder cover.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This device is significantly superior to traditional atmospheric monitoring equipment in terms of time resolution and spatial dimension monitoring. By setting up a physical sampling matrix of "time cavity + spatial stratification" and coordinating it with a windward module that adaptively adjusts wind direction, the accuracy and comprehensiveness of the detection results can be greatly improved.

[0024] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. The drawings are only examples and are not drawn strictly to scale. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0026] Figure 1 is a schematic diagram of the present invention from a front side perspective;

[0027] Figure 2 is a schematic diagram of the present invention from a rear side perspective;

[0028] Figure 3 It is a schematic diagram of the front view of the present invention;

[0029] Figure 4 is a schematic diagram of the windward module portion of the present invention;

[0030] Figure 5 is a schematic diagram of the rear side of the disc of the present invention;

[0031] Figure 6 It is an exploded schematic diagram of the disc and the rotating ring of the present invention;

[0032] Figure 7 It is an exploded schematic diagram of the disc and the rotating ring of the present invention;

[0033] Figure 8 It is a schematic diagram of the swivel portion of the present invention;

[0034] Figure 9 It is a schematic diagram of the sampling tube portion of the present invention;

[0035] Figure 10 This is a schematic diagram of the sampling tube of the present invention when the cover is opened;

[0036] Figure 11 It is a schematic diagram of the sampling tube of the present invention when the cover is opened.

[0037] Reference numerals:

[0038] 1. Base; 11. Roller; 12. Main controller;

[0039] 2. Windward module; 21. Turntable; 22. Bracket; 23. Disc; 24. Wind vane; 25. Angle sensor; 26. First motor; 27. Electric telescopic rod;

[0040] 3. Time-sharing sampling module; 31. Rotating ring; 32. Air pump; 33. Detection probe; 34. Guide rail; 35. Rotating groove; 36. Second motor; 37. Gear; 38. Ring gear; 39. Cylinder; 310. Cylinder cover; 311. Electromagnet; 312. Permanent magnet; 313. First electrode sheet; 314. Second electrode sheet; 315. Reset spring; 316. Guide rod; 317. Guide seat; 318. Anti-slip plate. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like 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 operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] In the description of the present invention, references to "first feature" and "second feature" may include one or more of these features. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being described. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of these features.

[0045] like Figures 1-11 An air pollution monitoring device shown includes: a base 1, a windward module 2 and a time-sharing sampling module 3.

[0046] like Figure 1-Figure 3 As shown, the base 1 is movable, with wheels 11 at the bottom to facilitate movement of the entire device and improve its portability. The base 1 is provided with a main controller 12 for controlling the operation of the corresponding modules. The base 1 is also provided with a rechargeable battery for powering the various electrical components.

[0047] like Figure 1-Figure 3 As shown, the windward module 2 includes a turntable 21, a bracket 22, a disk 23, a wind vane 24, an angle sensor 25, a first drive member and a second drive member. The turntable 21 is placed horizontally and rotatably mounted on the base 1. A bracket 22 is provided on the turntable 21, and a vertical disk 23 is fixed on the bracket 22. The front side of the disk 23 is provided with a time-sharing sampling module 3. The wind vane 24 can be freely rotatably mounted on the base 1. The rotating shaft of the wind vane 24 is connected to the angle sensor 25. The angle sensor 25, the first drive member and the second drive member are respectively connected to the main controller 12. The first drive member is connected to the turntable 21. The first drive member is used to drive the turntable 21 to rotate so that the front side of the disk 23 always faces the direction indicated by the wind vane 24. The second drive member is connected to the bracket 22 to drive the bracket 22 to move up and down.

[0048] like Figure 1-Figure 5 As shown, the time-sharing sampling module 3 includes a rotating ring 31, a sampling cylinder, an air pump 32, a detection probe 33 and a third driving member. The rotating ring 31 is rotatably arranged on the disk 23. The third driving member is connected to the rotating ring 31 to drive the rotating ring 31 to rotate around the central axis of the disk 23. The rotating ring 31 is provided with a plurality of sampling cylinders evenly spaced along the circumference of the rotating ring 31. The sampling cylinder is located on the front side of the disk 23. The sampling cylinder includes a cylinder body 39, a cylinder cover 310 and a fourth driving member. The front and rear sides of the cylinder body 39 are open, the rear side of the cylinder body 39 abuts against the disk 23 and is closed by the disk 23, the front side of the cylinder body 39 is provided with a cylinder cover 310, and the fourth driving member is connected to the cylinder cover 310 to drive the cylinder cover 310 to open or close.

[0049] The disc 23 is provided with an exhaust position and a detection position. The exhaust position is provided with an exhaust pump 32, and the detection position is provided with a detection probe 33. Each sampling cylinder will pass through the exhaust position and the detection position when rotating with the rotating ring 31; in the exhaust position, the cylinder cover 310 is opened, and the exhaust pump 32 extracts air to make the air flow through the sampling cylinder; in the detection position, the cylinder cover 310 is closed, and the detection probe 33 detects the air in the sampling cylinder.

[0050] Specifically, compared to conventional monitoring devices where the detection probe 33 is directly exposed to the atmosphere for detection, this device incorporates a time-sharing sampling module 3, enabling multi-point sampling throughout the day. The time-sharing sampling module 3 includes multiple sampling cartridges, each corresponding to a different time period. The main controller 12, via a third driver, drives the rotating ring 31 to rotate, enabling the device to automatically switch sampling cartridges for atmospheric sampling during different time periods.

[0051] The sampling cylinder passes through an air extraction position and a detection position during its rotation. The cylinder cover 310 is open only when the sampling cylinder is in the air extraction position, and is closed in all other positions. When the cylinder cover 310 is open, the air extraction pump 32 can extract external air, allowing atmospheric air to flow into the sampling cylinder.

[0052] When the vacuum pump 32 has been working for the set time, it can be considered that the outside air in this time period has fully entered the sampling cylinder. At this time, the vacuum pump 32 stops working, the cylinder cover 310 is closed, and the cylinder body 39 of the sampling cylinder is simultaneously sealed by the cylinder cover 310 and the disc 23. In this way, the air sample in the sampling cylinder can be sealed and preserved, which helps to improve the accuracy of the subsequent test results.

[0053] The sampling cylinder then rotates to the detection position, and the detection probe 33 can detect the air inside the sampling cylinder. This can accurately reflect the changes in atmospheric pollutants at different time periods. Different sampling cylinders correspond to different sampling periods, and the air samples in the sampling cylinders are independent of each other, preventing air sample mixing. This helps to accurately trace the hourly changes in pollutants (such as dust during peak hours in the morning and evening, and industrial emissions at night).

[0054] Furthermore, in order to ensure that the air samples collected by the sampling tube are more representative and to improve the accuracy and reliability of monitoring, the device is also provided with a windward module 2. The wind vane 24 in the windward module 2 can be rotated by the wind to indicate the wind direction. The angle sensor 25 is provided to detect the rotation angle of the rotating shaft of the wind vane 24 during the rotation process. Then the main controller 12 drives the turntable 21 to rotate the corresponding angle through the first driving member, so that the sampling tube installed on the front side of the disc 23 can always face the wind direction.

[0055] In addition, the windward module 2 is also provided with a second driving member, which can drive the bracket 22 to move up and down, thereby adjusting the height position of the sampling tube, so as to achieve synchronous sampling of the atmosphere at different height levels to obtain more comprehensive and three-dimensional atmospheric pollution data.

[0056] In further settings, such as Figure 3 As shown, the first driving element is a first motor 26, which is fixed to the bottom of the base 1. The motor shaft of the first motor 26 is connected to the turntable 21. The first motor 26 can be a stepper motor to facilitate adjustment of the rotation angle of the motor shaft. The second driving element is an electric telescopic rod 27, which is vertically mounted on the turntable 21. The top of the electric telescopic rod 27 is provided with a bracket 22. The bracket 22 can be adjusted up and down by extending and retracting the electric telescopic rod 27.

[0057] In further settings, such as Figure 5-Figure 8 As shown, an annular guide rail 34 is provided on the inner circumferential wall of the rotating ring 31, and an annular rotating groove 35 is provided on the outer circumferential wall of the disc 23. The guide rail 34 and the rotating groove 35 rotate in cooperation with each other, thereby not only realizing the relative rotation of the rotating ring 31 and the disc 23, but also preventing the two from separating.

[0058] The third driving member includes a second motor 36 and a gear 37. The second motor 36 is fixed to the rear side of the disc 23. The motor shaft of the second motor 36 is connected to the gear 37. A plurality of teeth are provided on the inner peripheral wall of the rotating ring 31 to form a ring gear 38. The gear 37 is engaged with the ring gear 38. Thus, the second motor 36 can drive the ring gear 38 to rotate by driving the gear 37 to rotate, and then drive the rotating ring 31 to realize the switching of different sampling cylinders.

[0059] In a further configuration, a first avoidance opening is provided at the air extraction position, a second avoidance opening is provided at the detection position, the air extraction pump 32 is located behind the first avoidance opening, and the detection probe 33 is located behind the second avoidance opening. In other words, neither the air extraction pump 32 nor the detection probe 33 is located on the front side of the disk 23 to avoid interfering with the rotation and switching of the sampling cylinder.

[0060] In a further configuration, the number of sampling cartridges is n, where n is an integer between 2 and 24 that is divisible by 24, such as 2, 3, 4, 6, 8, 12, or 24, corresponding to switching the sampling cartridge every 12, 8, 6, 4, 3, 2, or 1 hours. Of course, other values ​​for the number of sampling cartridges and the switching frequency may also be used, and are not limited thereto.

[0061] In further settings, such as 6, Figures 9-11As shown, the fourth driving member includes an electromagnet 311, a permanent magnet 312, a first electrode piece 313, a second electrode piece 314 and a reset piece. The front side of the cylinder 39 is provided with a reset piece connected to the cylinder cover 310, the front side of the cylinder 39 is inlaid with the electromagnet 311, the rear side of the cylinder cover 310 is provided with a permanent magnet 312, the rear side of the cylinder 39 is inlaid with the first electrode piece 313 electrically connected to the electromagnet 311, and the second electrode piece 314 electrically connected to the main controller 12 is provided at the air extraction position.

[0062] When the sampling tube rotates to the air extraction position, the first electrode piece 313 and the second electrode piece 314 abut against each other and are connected, the electromagnet 311 is energized to generate a magnetic field and repel the permanent magnet 312 to push open the tube cover 310; when the sampling tube leaves the air extraction position, the first electrode piece 313 and the second electrode piece 314 are separated, the electromagnet 311 is de-energized, and the reset member pulls the tube cover 310 to reset to close the tube body 39.

[0063] That is, the electromagnet 311 can only be energized to generate a magnetic field when the sampling tube is in the air extraction position. At this time, the magnetism of the electromagnet 311 is the same as that of the permanent magnet 312 on the tube cover 310. Like magnets repel each other, and the magnetic force pushes the tube cover 310 open, allowing outside air to enter the tube body 39. This automatic opening method of the tube cover 310 using electromagnetic force is simple in structure, compact, and easy to implement.

[0064] The reset member includes a return spring 315, a guide rod 316, a guide seat 317, and an anti-slip plate 318. The outer periphery of the cylinder cover 310 is provided with a rearwardly extending guide rod 316. The outer peripheral wall of the cylinder body 39 is provided with a guide seat 317 with a hole. The guide rod 316 is slidably inserted into the guide seat 317. The rear end of the guide rod 316 is provided with an anti-slip plate 318. The guide rod 316 is sleeved with a return spring 315. The rear end of the return spring 315 is connected to the guide seat 317, and the front end of the return spring 315 is connected to the cylinder cover 310. When the electromagnet 311 is energized to push the cylinder cover 310 open, the return spring 315 is stretched. When the electromagnet 311 is de-energized, the return spring 315 is reset, pulling the cylinder cover 310 back to close the cylinder body 39. Thus, the combined action of the electromagnetic force and the return spring 315 allows the cylinder cover 310 to be opened and closed. The structure is simple and ingenious, making it easy to implement.

[0065] In summary, this device is significantly superior to traditional atmospheric monitoring equipment in terms of temporal resolution and spatial dimension monitoring. By setting up a physical sampling matrix of "time cavity + spatial stratification" and coordinating the windward module 2 with adaptive wind direction adjustment, the accuracy and comprehensiveness of the detection results can be greatly improved.

[0066] Although some embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations to these embodiments without departing from the principles and purpose of the present invention are all within the scope of protection of the claims of the present invention.

Claims

1. An air pollution monitoring device, characterized in that: include: Base, upwind module and time-sharing sampling module; The base is a movable base, and a main controller is provided on the base; The windward module includes a turntable, a bracket, a disc, a wind vane, an angle sensor, a first driving member and a second driving member. The turntable is placed horizontally and rotatably mounted on the base. The bracket is provided on the turntable, and a vertical disc is fixed on the bracket. The front side of the disc is provided with the time-sharing sampling module. The wind vane is freely rotatably mounted on the base. The rotating shaft of the wind vane is connected to the angle sensor. The angle sensor, the first driving member and the second driving member are respectively connected to the main controller. The first driving member is connected to the turntable. The first driving member is used to drive the turntable to rotate so that the front side of the disc always faces the direction indicated by the wind vane. The second driving member is connected to the bracket to drive the bracket to move up and down; The time-sharing sampling module includes a rotating ring, a sampling cylinder, an air pump, a detection probe and a third driving member, the rotating ring is rotatably arranged on the disc, the third driving member is connected to the rotating ring to drive the rotating ring to rotate around the central axis of the disc, the rotating ring is provided with a plurality of sampling cylinders evenly spaced along the circumference of the rotating ring, the sampling cylinders are located on the front side of the disc, the sampling cylinder includes a cylinder body, a cylinder cover and a fourth driving member, the front and rear sides of the cylinder body are open, the rear side of the cylinder body abuts against the disc and is closed by the disc, the front side of the cylinder body is provided with the cylinder cover, and the fourth driving member is connected to the cylinder cover to drive the cylinder cover to open or close; The disc is provided with an air extraction position and a detection position, the air extraction pump is provided at the air extraction position, and the detection probe is provided at the detection position. Each sampling cylinder will pass through the air extraction position and the detection position when rotating with the rotating ring; at the air extraction position, the cylinder cover is opened, and the air extraction pump extracts air to make the air flow through the sampling cylinder; at the detection position, the cylinder cover is closed, and the detection probe detects the air in the sampling cylinder.

2. The air pollution monitoring device according to claim 1, characterized in that: The bottom of the base is provided with rollers.

3. The air pollution monitoring device according to claim 1, characterized in that: The first driving component is a first motor, which is fixed to the bottom of the base, and a motor shaft of the first motor is connected to the turntable.

4. The air pollution monitoring device according to claim 1, characterized in that: The second driving member is an electric telescopic rod, which is vertically arranged on the turntable, and the bracket is arranged on the top of the electric telescopic rod.

5. The air pollution monitoring device according to claim 1, characterized in that: An annular guide rail is provided on the inner circumferential wall of the rotating ring, and an annular rotating groove is provided on the outer circumferential wall of the disc, and the guide rail rotates in cooperation with the rotating groove; the third driving member includes a second motor and a gear, the second motor is fixedly arranged on the rear side of the disc, the motor shaft of the second motor is connected to the gear, and a plurality of teeth are provided on the inner circumferential wall of the rotating ring to form a gear ring, and the gear is meshed with the gear ring.

6. The air pollution monitoring device according to claim 1, characterized in that: The air extraction position is provided with a first avoidance port, the detection position is provided with a second avoidance port, the air extraction pump is provided at the back of the first avoidance port, and the detection probe is provided at the back of the second avoidance port.

7. The air pollution monitoring device according to claim 1, characterized in that: The number of the sampling cylinders is n, where n is an integer between 2 and 24 that is divisible by 24.

8. The air pollution monitoring device according to claim 1, characterized in that: The fourth driving member includes an electromagnet, a permanent magnet, a first electrode sheet, a second electrode sheet and a reset member; The front side of the cylinder is provided with a reset member connected to the cylinder cover, the front side of the cylinder is inlaid with the electromagnet, the rear side of the cylinder cover is provided with the permanent magnet, the rear side of the cylinder is inlaid with a first electrode sheet electrically connected to the electromagnet, and the air extraction position is provided with a second electrode sheet electrically connected to the main controller; When the sampling tube rotates to the air extraction position, the first electrode sheet abuts against the second electrode sheet and is connected, the electromagnet is energized to generate a magnetic field and repel the permanent magnet to push open the tube cover. When the sampling cylinder leaves the air extraction position, the first electrode sheet is separated from the second electrode sheet, the electromagnet is powered off, and the reset member pulls the cylinder cover to reset and close the cylinder body.

9. The air pollution monitoring device according to claim 8, characterized in that: The reset member includes a reset spring, a guide rod, a guide seat and an anti-slip plate. The outer peripheral edge of the cylinder cover is provided with a guide rod extending backward, and the outer peripheral wall of the cylinder body is provided with a guide seat with a hole. The guide rod can be slidably passed through the guide seat, and the rear end of the guide rod is provided with the anti-slip plate. The guide rod is sleeved with a reset spring, the rear end of the reset spring is connected to the guide seat, and the front end of the reset spring is connected to the cylinder cover.

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