A tunnel air quality detection device with a dustproof and waterproof sealed chamber

Abstract

This invention relates to the field of tunnel air quality detection and discloses a tunnel air quality detection device with a dustproof and waterproof sealed chamber. Symmetrically arranged hollow support boxes form the dustproof and waterproof sealed chamber. Fourth rotating shafts are symmetrically fitted laterally on the inner wall of the chamber. A third motor drives the third and fourth rotating shafts to form a triangular belt transmission structure. A first conveyor belt made of PU material is fitted between the two sets of fourth rotating shafts, and pulleys are mounted on the surface to achieve synchronous transmission. A centrifugal fan is installed in the middle of the inner cavity of the support box, and an independent third motor drives a second rotating shaft and a ceramic scraper at the top. The second rotating shaft and the ventilation ring are rotated and sealed through bearings, forming an airflow channel. This invention collects dust raised in the tunnel and observes the impurities in the dust within the dust collection pipe, thus providing a direct indication of the air quality inside the tunnel.

Description

Technical Field

[0001] This invention relates to the field of tunnel inspection, and in particular to a tunnel air quality detection device with a dustproof and waterproof sealed chamber. Background Technology

[0002] Air quality monitoring in tunnel environments is crucial for ensuring construction safety and operational health. However, existing detection technologies have significant shortcomings in implementation: While traditional fixed sensor arrays can achieve continuous monitoring, their preset points cannot comprehensively capture the concentration gradient changes of longitudinal pollutants (such as PM2.5 and CO) in the tunnel, resulting in insufficient spatial representativeness of the data. For example, in long tunnels, the concentration difference of pollutants between ventilation dead spots and densely trafficked areas can exceed 200%, but fixed equipment cannot dynamically track the pollution diffusion path. In addition, high-dust environments easily cause contamination of optical sensor mirrors. Existing equipment generally lacks a self-cleaning mechanism, requiring daily manual wiping and maintenance, which not only increases maintenance costs but also leads to frequent interruptions in monitoring data. Portable detectors, although mobile sampling is possible, rely on manual hand operation, resulting in data collection blind spots in dangerous areas such as tunnel arches and sidewalls, and cannot achieve simultaneous monitoring of multiple parameters and real-time data visualization. More significantly, the open structure of conventional equipment is prone to condensation failure of circuit boards when humidity is >90% RH, and the temporarily installed dust covers can cause airflow obstruction (measured wind speed reduction of up to 40%), severely limiting detection accuracy. The lack of intuitiveness in air quality testing inside tunnels increases the difficulty of the testing process. Therefore, there is an urgent need to design a tunnel air quality testing device with a dustproof, waterproof, and sealed chamber to solve the problem of air quality testing inside tunnels. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tunnel air quality detection device with a dustproof and waterproof sealed chamber.

[0004] This invention is achieved through the following technical solution:

[0005] A tunnel air quality detection device with a dustproof and waterproof sealed chamber is provided. The dustproof and waterproof sealed chamber is composed of symmetrically arranged hollow support boxes. The inner wall of the chamber is symmetrically fitted with a fourth rotating shaft. The third rotating shaft and the fourth rotating shaft are driven by a third motor to form a triangular belt transmission structure. A first conveyor belt made of PU material is fitted between the two sets of fourth rotating shafts. The surface is equipped with pulleys to achieve synchronous transmission. A centrifugal fan is installed in the middle of the inner cavity of the support box. An independent third motor is set at the top to drive a second rotating shaft and a ceramic scraper. The second rotating shaft and the ventilation ring are rotated and sealed by bearings to form an airflow channel.

[0006] Preferably, the swing arm is a hollow structure, the support plate is a hollow structure, the support plate is connected to the airbag and the swing arm respectively, the swing arm is connected to the ventilation pipe, and a pressure sensor is installed on the ventilation pipe system of the air pump.

[0007] Preferably, the filter screen has a mesh structure and an 80-mesh screen.

[0008] Preferably, the brush plate is equipped with a brush made of fibrous material.

[0009] Preferably, a bearing is installed between the venting ring and the second rotating shaft. The venting ring is a hollow ring that communicates with the duct. The material feeding plate is a hollow structure that communicates with the air outlet of the exhaust fan and with the dust collection pipe. The dust collection pipe is made of transparent glass material and has a mesh structure at its tail end.

[0010] Preferably, both the first and second conveyor belts are made of PU material.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] This invention utilizes an air pump to ventilate an airbag and a first motor to control its oscillation. This allows the airbag to oscillate on the tunnel's ceiling. By compressing the airbag and using sensors on the air pump, it's possible to detect depressurization. Depressurization indicates cracks in the ceiling, providing a more direct way to inspect tunnel quality. A third motor drives a brush plate to oscillate, sweeping the tunnel floor and raising dust deposited at the bottom. A fan then accelerates dust dispersion. This device operates within a sealed chamber, allowing for segmented inspection. The dust is adhered to a filter screen by its left-right movement, and a fan then collects the dust into a dust collection pipe. The dust collection pipe provides a direct view of impurities, and a comparison card allows for comparison to determine the tunnel's air quality. This invention, by raising and collecting dust within the tunnel and observing the impurities in the dust collection pipe, provides a direct assessment of the tunnel's air quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the structure of the filter screen of the present invention.

[0015] Figure 3 This is a schematic diagram of the support box of the present invention.

[0016] Labeling Explanation: 1. Positioning Ring, 2. First Motor, 3. First Shaft, 4. Vent Pipe, 5. Airbag, 6. Support Plate, 7. Swing Rod, 8. Collar, 9. Rotating Block, 10. Filter Screen, 11. First Clamping Ring, 12. Second Clamping Ring, 13. Mounting Rod, 14. Brush Plate, 15. First Conveyor Belt, 16. Fan, 17. Guiding Belt, 18. Scraper, 19. Second Shaft, 20. Vent Ring, 21. Upright Post, 22. Support Wheel, 23. Support Ring, 24. Support Shaft, 25. Second Conveyor Belt, 26. Turntable, 27. Second Motor, 28. Third Motor, 29. Dust Collection Pipe, 30. Material Passing Plate, 31. Exhaust Fan, 32. Support Box, 33. Third Motor, 34. Third Shaft, 35. Belt, 36. Fourth Shaft, 37. Support Block, 38. Base, 39. Air Pump. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-3 The present invention provides a technical solution:

[0019] A tunnel air quality detection device with a dustproof and waterproof sealed chamber includes symmetrically arranged support boxes 32. The support box 32 is a hollow rectangular box. A fourth rotating shaft 36 is symmetrically mounted on the inner wall of the box. A third motor 33 is fixedly installed in the middle of the side of the support box 32. A third rotating shaft 34 is fixedly mounted on the motor shaft of the third motor 33. A belt 35 with a triangular structure is formed between the third rotating shaft 34 and the fourth rotating shaft 36. A first conveyor belt 15 is mounted between the two sets of fourth rotating shafts 36. The surface of the fourth rotating shaft 36 is fitted with pulleys corresponding to the first conveyor belt 15. A fan 16 is installed in the middle of the inner side of the support box 32. A first retaining ring 11 and a second retaining ring 12 are respectively mounted on the upper and lower parts of the first conveyor belt 15. A filter screen 10 is fixedly installed on the upper side of the first retaining ring 11. An installation rod 13 is fixedly installed on the lower side of the second retaining ring 12. A brush plate 14 is fixedly assembled at the lower end of the installation rod 13. A base 38 is fixedly assembled at the bottom of the support box 32, forming the overall frame structure of the device.

[0020] A third motor 33 is fixedly mounted at the top of the support box 32. A second rotating shaft 19 is mounted on the motor shaft of the third motor 33. A scraper 18 is fixedly mounted at the end of the second rotating shaft 19. A ventilation ring 20 is fitted over the second rotating shaft 19. An exhaust fan 31 is fixedly mounted on the upper side of the surface of the support box 32. A duct 17 is connected between the air inlet of the exhaust fan 31 and the ventilation ring 20. A material passage plate 30 is mounted at the air outlet of the exhaust fan 31. Dust collection pipes 29 are evenly installed on the upper surface of the material passage plate 30.

[0021] A support block 37 is screwed onto the support box 32 near its bottom. A vertical rod 21 is welded to the top of the support block 37. A support ring 23 is connected to the top of the vertical rod 21. A support shaft 24 is fitted inside the support ring 23. A support wheel 22 is fitted onto the outer surface of the support shaft 24. A second motor 27 is fixedly installed on the top side of the vertical rod 21. A turntable 26 is fixedly fitted onto the motor shaft of the second motor 27. A second conveyor belt 25 is connected between the turntables 26, allowing the second conveyor belt 25 to rest on the support wheel 22. A first motor 2 is mounted on the second conveyor belt 25. A positioning ring 1 is symmetrically mounted between the first motor 2 and the second conveyor belt 25. A first rotating shaft 3 is mounted on the motor shaft of the first motor 2. A rotating block 9 is fixedly installed at the end of the first rotating shaft 3. A collar 8 is fitted over the rotating block 9. A handle 7 is fixedly installed on the top surface of the collar 8. A support plate 6 is fixedly installed at the top of the handle 7. An air bag 5 is fixedly installed on the upper surface of the support plate 6. An air pump 39 is fixedly installed on the upper surface of the third motor 33 located on the left side. An air pipe 4 is connected between the air pump 39 and the swing arm 7.

[0022] The swing arm 7 is a hollow structure, the support plate 6 is a hollow structure, the support plate 6 is connected to the airbag 5 and the swing arm 7 respectively, the swing arm 7 is connected to the ventilation pipe 4, and a pressure sensor is installed on the ventilation pipe system of the air pump 39.

[0023] The filter screen 10 has a mesh structure and is 80 mesh.

[0024] The brush plate 14 is equipped with a brush made of fibrous material.

[0025] A bearing is installed between the ventilation ring 20 and the second rotating shaft 19. The ventilation ring 20 is a hollow ring and is connected to the conduit 17. The material passage plate 30 is a hollow structure and is connected to the air outlet of the exhaust fan 31. The material passage plate 30 is also connected to the dust collection pipe 29. The dust collection pipe 29 is made of transparent glass material and has a mesh structure at its tail end. The ventilation ring 20 has evenly spaced through holes for collecting dust.

[0026] Both the first conveyor belt 15 and the second conveyor belt 25 are made of PU material.

[0027] Operating steps: First, place the device inside the sealed chamber of the tunnel and secure it with screws on the base 38. Then, turn on the switch of the third motor 33 to make it rotate in both directions, which will drive the first conveyor belt 15 to swing left and right, causing the filter screen 10 and brush plate 14 to swing left and right. The brush plate 14 can sweep the dust at the bottom of the tunnel, causing the dust to be stirred up. Then, the fan 16 blows the dust, making it fly up. As the filter screen 10 moves left and right, it adsorbs the dust. At the same time, turning on the switch of the third motor 33 will drive the scraper 18 to rotate. When the scraper 18 comes into contact with the filter screen 10, it scrapes the filter screen 10. Simultaneously, the exhaust fan... 31. Ventilation will draw dust into the dust collection pipe 29. A comparison card is placed nearby for direct comparison, allowing operators to visually observe the dust situation inside the tunnel. Due to the presence of the support block 37, the height of the upright 21 can be adjusted so that the airbag 5 can be placed against the top of the tunnel. The airbag 5 is inflated using the air pump 39, and then the swing arm 7 is swung by the first motor 2, causing the airbag 5 to swing along the top of the tunnel. This will compress the airbag 5. When pits or defects appear, part of the airbag 5 will enter the pit or depression, causing depressurization. By observing the pressure sensor, the condition of the tunnel top can be directly observed, making the quality inspection of the tunnel more intuitive.

[0028] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A tunnel air quality detection device with a dustproof and waterproof sealed chamber, comprising symmetrically arranged support boxes (32), characterized in that: The support box (32) is a hollow rectangular box. A fourth rotating shaft (36) is symmetrically mounted horizontally on the inner wall of the box. A third motor (33) is fixedly installed in the middle of the side of the support box (32). A third rotating shaft (34) is fixedly mounted on the motor shaft of the third motor (33). A belt (35) with a triangular structure is formed between the third rotating shaft (34) and the fourth rotating shaft (36). A first conveyor belt (15) is mounted between the two sets of fourth rotating shafts (36). The surface of the fourth rotating shaft (36) is fitted with a belt that is compatible with the first conveyor belt (15). The corresponding pulley, the fan (16) is installed in the middle of the inner side of the support box (32), the first retaining ring (11) and the second retaining ring (12) are respectively installed on the upper and lower parts of the first conveyor belt (15), the filter screen (10) is fixedly installed on the upper side of the first retaining ring (11), the mounting rod (13) is fixedly installed on the lower side of the second retaining ring (12), the brush plate (14) is fixedly assembled at the lower end of the mounting rod (13), and the base (38) is fixedly assembled at the bottom of the support box (32), forming the overall frame structure of the device; A third motor (33) is fixedly mounted on the top of the support box (32). A second rotating shaft (19) is mounted on the motor shaft of the third motor (33). A scraper (18) is fixedly mounted on the end of the second rotating shaft (19). A ventilation ring (20) is fitted over the second rotating shaft (19). An exhaust fan (31) is fixedly mounted on the upper side of the surface of the support box (32). A duct (17) is connected between the air inlet of the exhaust fan (31) and the ventilation ring (20). A material passage plate (30) is mounted on the air outlet of the exhaust fan (31). Dust collection pipes (29) are evenly installed on the upper surface of the material passage plate (30). A support block (37) is screwed onto the support box (32) near the bottom. A vertical rod (21) is welded to the top of the support block (37). A support ring (23) is connected to the top of the vertical rod (21). A support shaft (24) is fitted inside the support ring (23). A support wheel (22) is fitted on the outer surface of the support shaft (24). A second motor (27) is fixedly installed on the top side of the vertical rod (21). A turntable (26) is fixedly fitted on the motor shaft of the second motor (27). A second conveyor belt (25) is connected between the turntables (26) and rests on the support wheel (22). The first motor (2) is mounted on the upper part. A positioning ring (1) is symmetrically mounted between the first motor (2) and the second conveyor belt (25). A first rotating shaft (3) is mounted on the motor shaft part of the first motor (2). A rotating block (9) is fixedly installed at the end of the first rotating shaft (3). A collar (8) is fitted on the outside of the rotating block (9). A grip (7) is fixedly installed on the top surface of the collar (8). A support plate (6) is fixedly installed at the top of the grip (7). An air bag (5) is fixedly installed on the upper surface of the support plate (6). An air pump (39) is fixedly installed on the upper surface of the third motor (33) located on the left side. An air pipe (4) is connected between the air pump (39) and the swing arm (7).

2. The tunnel air quality detection device with a dustproof and waterproof sealed chamber according to claim 1, characterized in that: The swing arm (7) is a hollow structure, the support plate (6) is a hollow structure, the support plate (6) is connected to the airbag (5) and the swing arm (7) respectively, the swing arm (7) is connected to the air pipe (4), and a pressure sensor is installed on the air pipe system of the air pump (39).

3. The tunnel air quality detection device with a dustproof and waterproof sealed chamber according to claim 1, characterized in that: The filter screen (10) has a mesh structure and is 80 mesh.

4. The tunnel air quality detection device with a dustproof and waterproof sealed chamber according to claim 1, characterized in that: The brush plate (14) is equipped with a brush made of fibrous material.

5. The tunnel air quality detection device with a dustproof and waterproof sealed chamber according to claim 1, characterized in that: A bearing is installed between the ventilation ring (20) and the second rotating shaft (19). The ventilation ring (20) is a hollow ring and is connected to the guide tube (17). The material feeding plate (30) is a hollow structure and is connected to the air outlet of the exhaust fan (31). The material feeding plate (30) is connected to the dust collection pipe (29). The dust collection pipe (29) is made of transparent glass material and has a mesh structure at the tail end. Through holes are evenly opened on the ventilation ring (20).

6. The tunnel air quality detection device with a dustproof and waterproof sealed chamber according to claim 1, characterized in that: Both the first conveyor belt (15) and the second conveyor belt (25) are made of PU material.

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