Air monitor for monitoring surface air

Abstract

The invention discloses an air monitor for surface air monitoring, and relates to the technical field of air quality monitoring, the air monitor specifically comprises a shell, an inner cavity of the shell is fixedly connected with a partition plate, the partition plate divides the inner cavity of the shell into a detection cavity and a power cavity, the middle part of the detection cavity is fixedly connected with a support ring, and the support ring is fixedly connected with the power cavity. The outer circle of the supporting ring is movably sleeved with a rotating ring, air flowing pipelines are evenly arranged in the middle of the rotating ring, an inner cavity of the supporting ring is divided into a detection cavity and an exhaust cavity, an air inlet hole is formed in the top of the detection cavity, an exhaust hole is formed in the top of the exhaust cavity, and a re-detection cavity is formed in one side of the top end of the detection cavity. And the retesting cavity and the exhaust hole are positioned on the same straight line. The air flowing pipeline can be used as an air inlet channel and an air exhaust channel, and in the air exhaust process of the monitor, the air flowing pipeline can be cleaned by using filtered clean air, so that the air flowing pipeline can be reused conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of air quality monitoring, and specifically to an air monitor for surface air monitoring. Background Art

[0002] An air monitor is a scientific instrument used to monitor air pollutants and environmental air quality. It is mainly used to measure the concentrations of pollutants such as particulate matter, harmful gases, ozone, and sulfur dioxide in the atmosphere, as well as meteorological parameters such as temperature, humidity, wind speed, and wind direction. Air monitoring instruments are widely used in fields such as environmental protection, public health, industrial production, and transportation.

[0003] The working principle of an air monitor is generally as follows: using a pump or other air sampling device to collect an air sample and introduce it into the monitoring system. The monitoring system measures the pollutants in the air sample through various analyses (such as photochemical method, beta-ray method, oscillating microbalance method, photometry, spectrophotometry, and electrochemistry method, etc.), processes and analyzes the collected data, generates an air quality report, and stores the data and provides remote access through a cloud platform. Currently, most air samples flow in a specific pipeline. However, during the flow of the air sample in the pipeline, under the action of static electricity, the particulate matter in the air sample is easily adhered to the inner wall of the pipeline, and dust is easily accumulated in the air flow pipeline. As a result, when the air sample passes through the intake pipeline, the content of particulate matter in it is likely to change, which cannot guarantee the reliability of the use of the air monitor. Based on this, this application proposes an air monitor for surface air monitoring. Summary of the Invention

[0004] The present invention provides an air monitor for surface air monitoring, which solves the problem of easy dust accumulation in the air flow pipeline and inability to guarantee the detection accuracy mentioned in the above background art.

[0005] The present invention provides the following technical solution: An air monitor for surface air monitoring, including a housing. A partition plate is fixedly connected to the inner cavity of the housing. The partition plate divides the inner cavity of the housing into a detection chamber and a power chamber. A support ring is fixedly connected to the middle of the detection chamber. A rotating ring is movably sleeved on the outer ring of the support ring. Air flow pipelines are evenly arranged in the middle of the rotating ring. The inner cavity of the support ring is divided into a detection chamber and an exhaust chamber. An air inlet hole is provided at the top of the detection chamber. An exhaust hole is provided at the top of the exhaust chamber. A re-measurement chamber is provided on one side of the top of the detection chamber. The re-measurement chamber is on the same straight line as the exhaust hole. A dust particle sensor one is provided on one side of the re-measurement chamber. An air discharge pipe is fixedly connected to the side of the re-measurement chamber away from the exhaust hole.

[0006] An air filter box, an exhaust fan and an ion fan are arranged in the power chamber. The exhaust end of the detection chamber is connected to the air inlet end of the air filter box through the exhaust fan, and the air outlet end of the air filter box is connected to the air inlet end of the exhaust chamber through the ion fan. In the middle of one end of the air filter box, a turbine is fixedly connected. In the middle of the other end of the air filter box is a dust filter chamber, and the dust filter chamber is communicated with the inner cavity of the turbine through an air distribution plate. The dust filter chamber is evenly fixedly connected with air filter plates, and the air outlet end of the dust filter chamber is connected to the air inlet end of the ion fan.

[0007] The air inlet end of the turbine is connected to the air outlet end of the exhaust fan. In the middle of the inner cavity of the turbine, a turbine blade is movably connected. In the middle of the turbine blade, a rotating rod is fixedly connected. The other end of the rotating rod penetrates through the air filter plate, and a cleaning brush one is fixedly connected to the outer ring of the rotating rod. The cleaning brush one contacts the side of the air filter plate close to the turbine.

[0008] Preferably, the angle between the air inlet hole and the exhaust hole is the same as the angle between two adjacent air flow pipes.

[0009] Preferably, a driving structure is arranged in the detection chamber, and the rotating ring is driven by the driving structure.

[0010] Preferably, the air distribution plate is of a hollow structure. An air inlet groove is arranged on the side of the air distribution plate close to the turbine. The inner cavity of the air distribution plate is connected to the inner cavity of the turbine through the air inlet groove. A mesh plate is arranged on the other side of the air distribution plate. Two cleaning brushes two are fixedly connected to the outer ring of the rotating rod. The mesh plate is located between the two cleaning brushes two, and the cleaning brush two contacts the mesh plate.

[0011] Preferably, a dust cleaning hole is arranged at the bottom of the dust filter chamber. A plugging structure is arranged on the housing. The dust cleaning hole is opened and closed through the plugging structure. And a dust discharging hole is arranged at the bottom of the inner cavity of the air distribution plate. The dust discharging hole is located above the dust cleaning hole.

[0012] Preferably, the plugging structure includes an electric telescopic rod connected to the housing, a servo motor one connected to the end of the output shaft of the electric telescopic rod, and a plugging plate connected to the end of the output shaft of the servo motor one. The plugging plate is adapted to the dust cleaning hole. And the inner diameter of the plugging plate, the outer diameter of the air distribution plate and the outer diameter of the air filter plate are the same. The servo motor one is located outside the power chamber.

[0013] Preferably, a dust collection box is arranged at the bottom of the power chamber. The dust collection box is connected to the housing in a detachable manner.

[0014] Preferably, the outer sidewall of the swivel ring fits against the inner wall of the detection chamber. A through hole is provided in the middle of the top of the detection chamber. The top end of the swivel ring extends to the outside of the housing through the through hole. The end of the air flow pipeline away from the support ring is flush with the outer sidewall of the swivel ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. For the air monitor for surface air monitoring, the air flow pipeline can serve as an air inlet channel and an air outlet channel. During the air exhaust process of the monitor, the filtered clean air is used to clean the air flow pipeline, facilitating the reuse of the air flow pipeline. The dust particle sensor I is used to detect the particulate matter content in the air generated after flushing. The controller of the air monitor then calculates the particulate matter content in the air to be measured based on the air particulate matter content detected by the instruments in the detection chamber and the air particulate matter content detected by the dust particle sensor I, thereby avoiding monitoring errors caused by the adhesion of air particulate matter on the intake channel and improving the accuracy of the monitoring results of the monitor.

[0017] 2. For the air monitor for surface air monitoring, through the setting of the air filter box, the air filter box uses the air discharged by the exhaust fan as power and uses the turbine for energy conversion to convert the air kinetic energy into mechanical energy, enabling the air to be brushed on the air filter plate and the mesh plate during the filtering process, avoiding the blockage of the air filter plate by dust, and ensuring the use effect of the air filter box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front schematic view of the structure of the present invention;

[0019] Figure 2 is a bottom schematic view of the structure of the present invention;

[0020] Figure 3 is a sectional schematic view of the housing of the structure of the present invention;

[0021] Figure 4 is an internal schematic view of the structure of the present invention;

[0022] Figure 5 is the structure of the present invention Figure 4 back schematic view;

[0023] Figure 6 is the structure of the present invention Figure 4 explosion schematic view;

[0024] Figure 7 is a sectional schematic view of the air filter box of the structure of the present invention;

[0025] Figure 8 is the structure of the present invention Figure 7Explosion schematic diagram.

[0026] In the figure: 1, housing; 2, swivel ring; 3, air flow pipeline; 4, servo motor II; 5, air discharge pipe; 6, dust collection box; 7, re-measurement cavity; 8, dust particle sensor I; 9, detection chamber; 10, air filter box; 11, ion blower; 12, air inlet pipe I; 13, partition board; 14, exhaust chamber; 15, air outlet pipe II; 16, exhaust fan; 17, air outlet pipe I; 18, air inlet hole; 19, exhaust hole; 20, support ring; 21, electric telescopic rod; 22, servo motor I; 23, turbine blade; 24, air equalizing plate; 25, air filter plate; 26, cleaning brush I; 27, rotating rod; 28, blocking plate; 29, mesh plate; 30, dust cleaning hole; 31, air inlet hole; 32, air outlet hole; 33, turbine; 34, air inlet groove; 35, dust discharge hole; 36, through hole; 37, cleaning brush II; 38, air inlet pipe II; 39, dust particle sensor II. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] The present invention provides an embodiment: Refer to Figures 1-8 , an air monitor for surface air monitoring, including a housing 1. A partition board 13 is fixedly connected to the inner cavity of the housing 1. The partition board 13 divides the inner cavity of the housing 1 into a detection cavity and a power cavity. A support ring 20 is fixedly connected to the middle of the detection cavity. The inner cavity of the support ring 20 is divided into a detection chamber 9 and an exhaust chamber 14. An air inlet hole 18 is provided at the top of the detection chamber 9, and an exhaust hole 19 is provided at the top of the exhaust chamber 14.

[0029] A swivel ring 2 is movably sleeved on the outer ring of the support ring 20. A driving structure is provided in the detection cavity. The swivel ring 2 is driven by the driving structure. In some embodiments of the present application, the driving structure includes a servo motor II 4 connected to the detection cavity and a toothed ring connected to the swivel ring 2. The end of the output shaft of the servo motor II 4 is fixedly connected with a gear through a reducer. The gear meshes with the toothed ring. As Figure 6 shown, when the servo motor II 4 rotates, the servo motor II 4 can drive the gear connected thereto to rotate. The gear can drive the swivel ring 2 to rotate through the toothed ring meshing therewith.

[0030] The middle part of the swivel ring 2 is evenly provided with air flow pipes 3. The angle between the air inlet hole 18 and the exhaust hole 19 is the same as the angle between two adjacent air flow pipes 3. Under the action of the second servo motor 4, both the air inlet hole 18 and the exhaust hole 19 can be aligned with the air flow pipes 3. The outer side wall of the swivel ring 2 is attached to the inner wall of the detection cavity. In the middle of the top of the detection cavity, there is a through hole 36. The top end of the swivel ring 2 extends to the outside of the housing 1 through the through hole 36. One end of the air flow pipe 3 away from the support ring 20 is flush with the outer side wall of the swivel ring 2. With such a setting, the outside air can enter the inner cavity of the detection chamber 9 through the air flow pipes 3. A conventional air monitoring instrument is arranged in the detection chamber 9, and the conventional air monitoring instrument is used to detect the air quality. The conventional air monitoring instrument can be a temperature and humidity sensor, a particulate matter detector, a volatile organic compound detector, etc., which will not be elaborated here. And during the rotation of the swivel ring 2, the impurities adhering to the outer surface of the swivel ring 2 can be scraped off by the housing 1, realizing the cleaning of the air inlet end of the air flow pipes 3.

[0031] On one side of the top end of the detection cavity, there is a retest cavity 7. The retest cavity 7 and the exhaust hole 19 are on the same straight line. On one side of the retest cavity 7, there is a first dust particle sensor 8. On the side of the retest cavity 7 away from the exhaust hole 19, there is a fixed connection with an air discharge pipe 5. When the air flow pipe 3 is aligned with the exhaust hole 19, the air in the exhaust cavity 14 can be discharged through the exhaust hole 19, the air flow pipe 3 aligned with the exhaust hole 19, the retest cavity 7 and the air discharge pipe 5. And the air in the exhaust cavity 14 can scour the air flow pipe 3, blowing off the particulate matter adhering to the inner wall of the air flow pipe 3, realizing the cleaning of the air flow pipe 3, facilitating the use of the air flow pipe 3, and the first dust particle sensor 8 can be used to detect the particulate matter adhering to the inner wall of the air flow pipe 3. The combined use of the first dust particle sensor 8 and the conventional air monitoring instrument arranged in the detection chamber 9 can improve the accuracy of air particulate matter monitoring.

[0032] An air filter box 10, a suction fan 16 and an ion blower 11 are arranged in the power cavity. In the middle of one end of the air filter box 10, there is a fixed connection with a turbine 33. The air inlet hole 31 of the turbine 33 is connected to the exhaust end of the detection chamber 9 through the suction fan 16. The air inlet end of the suction fan 16 is connected with a second air inlet pipe 38. The other end of the second air inlet pipe 38 is connected to the exhaust end of the detection chamber 9. The air outlet end of the suction fan 16 is connected with a first air outlet pipe 17. The other end of the first air outlet pipe 17 is connected to the air inlet hole 31. The exhaust end of the detection chamber 9 is connected to the air inlet end of the air filter box 10 through the suction fan 16. When the suction fan 16 works, the outside air can enter the inner cavity of the detection chamber 9 through the air flow pipe 3 aligned with the air inlet hole 18. The detected air can be blown into the inner cavity of the turbine 33 through the suction fan 16.

[0033] In the middle of the inner cavity of the turbine 33, a turbine blade 23 is movably connected. In the middle of the turbine blade 23, a rotating rod 27 is fixedly connected. The air entering the turbine 33 can push the turbine blade 23 to rotate, and when the turbine blade 23 rotates, it drives the rotating rod 27 to rotate.

[0034] In the middle of the other end of the air filter box 10 is a dust filtration cavity. The dust filtration cavity is communicated with the inner cavity of the turbine 33 through an air distribution plate 24. The air distribution plate 24 is a hollow structure. On the side of the air distribution plate 24 close to the turbine 33, there is an air inlet groove 34. The inner cavity of the air distribution plate 24 is connected to the inner cavity of the turbine 33 through the air inlet groove 34. On the other side of the air distribution plate 24, there is a mesh plate 29. Through the setting of the air distribution plate 24, the air discharged from the turbine 33 can be evenly distributed in the dust filtration cavity.

[0035] Air filter plates 25 are evenly and fixedly connected to the dust filtration cavity. The other end of the rotating rod 27 penetrates through the air filter plates 25. The rotating rod 27 is movably connected to both the air filter plates 25 and the air distribution plate 24. On the outer circle of the rotating rod 27, a first cleaning brush 26 is fixedly connected. The first cleaning brush 26 contacts the side of the air filter plate 25 close to the turbine 33. On the outer circle of the rotating rod 27, two second cleaning brushes 37 are fixedly connected. The mesh plate 29 is located between the two second cleaning brushes 37. The second cleaning brushes 37 contact the mesh plate 29. When the rotating rod 27 rotates, the rotating rod 27 can drive the first cleaning brush 26 and the second cleaning brushes 37 to rotate, and the air filter plates 25 and the mesh plate 29 can be brushed, avoiding being blocked by dust and facilitating the use of the air filter box 10. The number and material of the air filter plates 25 can be set according to requirements and will not be elaborated here.

[0036] The air outlet end of the dust filtration cavity is connected to the air inlet end of the ion blower 11. At the end of the dust filtration cavity far from the turbine 33, there is an air outlet hole 32. On the outside of the air outlet hole 32, an inlet air pipe 12 is fixedly connected. The other end of the inlet air pipe 12 is connected to the air inlet end of the ion blower 11. The air outlet end of the ion blower 11 is connected to an outlet air pipe 15. The other end of the outlet air pipe 15 is connected to the air inlet end of the exhaust chamber 14. The exhaust end of the air filter box 10 is connected to the air inlet end of the exhaust chamber 14 through the ion blower 11. When the ion blower 11 works, it can blow the air filtered by particulate matter into the exhaust chamber 14 and ionize the air. And on one side of the outlet air pipe 15, there is a second dust particle sensor 39. The second dust particle sensor 39 is used to detect the use effect of the air filter plates 25. And the combined use of the second dust particle sensor 39 and the first dust particle sensor 8 can further improve the detection accuracy of the dust particles adhering to the inner wall of the air flow pipeline 3.

[0037] As can be seen from the above description, the air filter box uses the air discharged by the exhaust fan 16 as power to realize the brushing of the air filter plate 25 and the mesh plate 29, which can extend the service life of the air filter box.

[0038] As Figure 7 and Figure 8 shown, to realize the cleaning of the dust filtering cavity, a dust cleaning hole 30 is provided at the bottom of the dust filtering cavity of this application, and a plugging structure is provided on the housing 1. The dust cleaning hole 30 is opened and closed through the plugging structure, and a dust discharging hole 35 is provided at the bottom of the inner cavity of the air distribution plate 24. The dust discharging hole 35 is located above the dust cleaning hole 30. When the dust cleaning hole 30 is in the open state, the dust in the air distribution plate 24 can fall into the inner cavity of the dust cleaning hole 30 through the dust discharging hole 35. When the dust cleaning hole 30 is in the closed state, the plugging structure also plugs the dust discharging hole 35.

[0039] The plugging structure includes an electric telescopic rod 21 connected to the housing 1, a first servo motor 22 connected to the end of the output shaft of the electric telescopic rod 21, and a plugging plate 28 connected to the end of the output shaft of the first servo motor 22 through a speed reducer. The plugging plate 28 is adapted to the dust cleaning hole 30, and the inner diameter of the plugging plate 28, the outer diameter of the air distribution plate 24, and the outer diameter of the air filter plate 25 are the same. The first servo motor 22 is located outside the power cavity. The telescopic movement of the electric telescopic rod 21 can change the position of the plugging plate 28, and the plugging plate 28 can plug or open the dust cleaning hole 30. When the first servo motor 22 works, it can drive the plugging plate 28 to rotate, which is convenient for cleaning the dust falling on the top of the plugging plate 28.

[0040] In addition, a dust collection box 6 is provided at the bottom of the power cavity. The dust collection box 6 is connected to the housing 1 in a detachable connection manner. When the dust cleaning hole 30 is in the open state, the dust falls into the inner cavity of the dust collection box 6 under the action of gravity, which is convenient for the unified treatment of the dust. As Figure 2 shown, a clamping groove is provided at the bottom of the housing 1, and the dust collection box 6 is snap-connected to the housing 1 through the clamping groove.

[0041] The inner wall of the air flow pipeline 3 is provided with an anti-sticking and anti-static coating, which reduces the probability of airborne particulate matter adhering to the inner wall of the air flow pipeline 3 and improves the reliability of the monitoring results of this air monitor.

[0042] When the air monitor is in use, the air to be measured enters the inner cavity of the detection chamber 9 through an air flow pipeline aligned with the air inlet hole 18. Then, the driving structure drives the rotating ring 2 to rotate until the air flow pipeline aligned with the air inlet hole 18 is aligned with the exhaust hole 19. That is, the air flow pipeline in the present application serves as both the air inlet channel and the exhaust channel. Thus, during the exhaust process of the monitor, the air flow pipeline can be cleaned, facilitating its reuse. The dust particle sensor 1-8 is used to detect the content of particulate matter adhering to the inner wall of the air flow pipeline. The controller of the air monitor can calculate the content of particulate matter in the air to be measured based on the content of air particulate matter detected by the instruments in the detection chamber 9 and the content of air particulate matter detected by the dust particle sensor 1-8, improving the accuracy of the monitoring results of the monitor.

[0043] The electrical components involved in the present application are all prior arts. Those skilled in the art understand their connection methods. Through those skilled in the art, all the electrical components in the present application are connected to their adapted power supplies through wires, and a suitable controller is selected according to the actual situation to meet the control requirements. For the specific connection and control sequence, refer to the following description. The electrical components are electrically connected in the order of their sequential operations. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of electrical control will be given.

[0044] In summary, when the air monitor for surface air monitoring is in use, the exhaust fan 16 operates. The operation of the exhaust fan 16 causes the air to be measured to enter the inner cavity of the detection chamber 9 through the air flow pipe 3 aligned with the air inlet hole 18. After the air monitor completes air sampling, the drive structure drives the rotating ring 2 to rotate. The rotating ring 2 drives the air flow pipe 3 to rotate until the air flow pipe 3 is aligned with the exhaust hole 19. During the rotation of the rotating ring 2, the detection chamber 9 detects the air to be measured. The monitored air is blown into the inner cavity of the turbine 33 under the action of the exhaust fan 16. The air entering the turbine 33 drives the turbine blades 23 to rotate. The turbine blades 23 drive the rotating rod 27 to rotate. The rotating rod 27 drives the first cleaning brush 26 and the second cleaning brush 37 to rotate. The air in the turbine 33 is evenly distributed in the dust filtering chamber through the air distribution plate 24. The air filter plate 25 intercepts the particulate matter in the air, removing the particulate matter in the air. The filtered clean air enters the inner cavity of the exhaust chamber 14 under the action of the ion fan 11. The ion wind enters the air flow pipe 3 aligned with the exhaust hole 19 through the exhaust hole 19, realizing the flushing of the air flow pipe 3. The gas generated after flushing enters the re-measurement chamber 7. The first dust particle sensor 8 detects the particulate matter content in the gas. The controller in the air monitor can obtain the particulate matter monitoring result of the air to be measured by combining the particulate matter monitoring result of the first dust particle sensor 8 and the particulate matter monitoring result of the instrument in the detection chamber 9, improving the reliability of the use of the air monitor. The re-measured air is discharged through the air discharge pipe 5.

[0045] All the standard parts used in the present invention can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as mature bolts in the prior art. The machines, parts and equipment all adopt the conventional models in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air monitor for surface air monitoring, comprising a housing (1), characterized in that: The inner cavity of the shell (1) is fixedly connected to a partition plate (13), and the partition plate (13) divides the inner cavity of the shell (1) into a detection cavity and a power cavity. The middle of the detection cavity is fixedly connected to a support ring (20), and the outer ring of the support ring (20) is movably sleeved with a rotating ring (2). The middle of the rotating ring (2) is evenly provided with an air flow duct (3). The inner cavity of the support ring (20) is divided into a detection chamber (9) and an exhaust chamber (14). The top of the detection chamber (9) is provided with an air inlet hole (18), and the top of the exhaust chamber (14) is provided with an exhaust hole (19). A re-detection chamber (7) is provided on one side of the top of the detection chamber. The re-detection chamber (7) and the exhaust hole (19) are on the same straight line. A dust particle sensor (8) is provided on one side of the re-detection chamber (7). The side of the re-detection chamber (7) away from the exhaust hole (19) is fixedly connected to an air exhaust pipe (5); An air filter box (10), an exhaust fan (16) and an ion fan (11) are arranged in the power chamber; the exhaust end of the detection chamber (9) is connected to the air inlet end of the air filter box (10) through the exhaust fan (16); the exhaust end of the air filter box (10) is connected to the air inlet end of the exhaust chamber (14) through the ion fan (11); the middle part of one end of the air filter box (10) is fixedly connected to a turbine (33); the middle part of the other end of the air filter box (10) is a dust filter chamber; the dust filter chamber is connected to the inner cavity of the turbine (33) through an air balancing plate (24); the dust filter chamber is evenly and fixedly connected to an air filter plate (25); the air outlet end of the dust filter chamber is connected to the air inlet end of the ion fan (11); The air inlet end of the turbine (33) is connected to the air outlet end of the exhaust fan (16); a turbine blade (23) is movably connected to the middle of the inner cavity of the turbine (33); a rotating rod (27) is fixedly connected to the middle of the turbine blade (23); the other end of the rotating rod (27) passes through the air filter plate (25); a cleaning brush (26) is fixedly connected to the outer ring of the rotating rod (27); and the cleaning brush (26) is in contact with a side of the air filter plate (25) close to the turbine (33).

2. The air monitor for surface air monitoring according to claim 1, characterized in that: The included angle between the air inlet hole (18) and the air outlet hole (19) is the same as the included angle between two adjacent air flow ducts (3).

3. The air monitor for surface air monitoring according to claim 1, characterized in that: A driving structure is provided in the detection cavity, and the rotating ring (2) is driven by the driving structure.

4. The air monitor for surface air monitoring according to claim 1, characterized in that: The air balancing plate (24) is a hollow structure. An air inlet groove (34) is provided on one side of the air balancing plate (24) close to the turbine (33). The inner cavity of the air balancing plate (24) is connected to the inner cavity of the turbine (33) via the air inlet groove (34). A mesh plate (29) is provided on the other side of the air balancing plate (24). Two cleaning brushes (37) are fixedly connected to the outer ring of the rotating rod (27). The mesh plate (29) is located between the two cleaning brushes (37). The cleaning brush (37) is in contact with the mesh plate (29).

5. The air monitor for surface air monitoring according to claim 4, characterized in that: A cleaning hole (30) is provided at the bottom of the dust filter cavity, a sealing structure is provided on the shell (1), the cleaning hole (30) is opened and closed by the sealing structure, and a dust discharge hole (35) is provided at the bottom of the inner cavity of the air distribution plate (24), and the dust discharge hole (35) is located above the cleaning hole (30).

6. The air monitor for surface air monitoring according to claim 5, characterized in that: The blocking structure comprises an electric telescopic rod (21) connected to the housing (1), a servo motor (22) connected to the end of the output shaft of the electric telescopic rod (21), and a blocking plate (28) connected to the end of the output shaft of the servo motor (22); the blocking plate (28) is adapted to the dust cleaning hole (30), and the inner diameter of the blocking plate (28), the outer diameter of the wind balancing plate (24), and the outer diameter of the air filter plate (25) are the same; and the servo motor (22) is located outside the power chamber.

7. An air monitor for surface air monitoring according to claim 6, characterized in that: A dust storage box (6) is provided at the bottom of the power chamber, and the dust storage box (6) is connected to the housing (1) in a detachable manner.

8. The air monitor for surface air monitoring according to claim 1, characterized in that: The outer wall of the rotating ring (2) is in contact with the inner wall of the detection cavity, a through hole (36) is provided in the middle of the top of the detection cavity, the top of the rotating ring (2) extends to the outside of the housing (1) through the through hole (36), and the end of the air flow duct (3) away from the support ring (20) is flush with the outer wall of the rotating ring (2).

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