Gas sensor capable of monitoring concentration of key atmospheric pollutants in real time

Abstract

The application relates to the field of atmospheric pollution treatment, and discloses a gas sensor capable of monitoring the concentration of key atmospheric pollutants in real time, which comprises a monitoring box, a buffer mechanism is fixedly connected to the bottom of the monitoring box, a filtering mechanism is fixedly connected to the right side of the monitoring box, a power supply is fixedly connected to the left of the lower surface in the monitoring box, a display and an intelligent controller are sequentially fixedly connected to the front surface of the monitoring box from top to bottom, and an L-shaped air inlet pipe is rotationally connected to the top of the monitoring box through a rotating shaft. The buffer mechanism plays a buffering effect when the monitoring box moves, the air filtered after being monitored by the butt joint monitoring mechanism is discharged, the butt joint monitoring mechanism can rotate with the L-shaped air inlet pipe through the bevel gear one, the butt joint position in the inside is driven to be monitored, then the ambient air in different directions is monitored, the display is used to display the monitoring result, the power supply is used to provide power as a whole, and the intelligent controller is used to control as a whole.

Description

Technical Field

[0001] This invention relates to the field of air pollution control, and more specifically to a gas sensor capable of real-time monitoring of the concentration of key air pollutants. Background Technology

[0002] Gas detection systems are generally divided into control, sensor, and management platform components. They can achieve functions such as remote unattended operation, real-time data transmission, over-limit alarm, equipment linkage, and data analysis. People use gas detection methods to judge the air quality of the day.

[0003] Patent publication number (CN215866586U) discloses a high-precision air monitoring device for air pollution control, comprising a housing. First sliding grooves are formed on both sides of the bottom of the housing's inner cavity. A first sliding rod is fixedly connected to the inner cavity of the first sliding groove. A first slider is slidably connected to the surface of the first sliding rod. First springs are sleeved on both sides of the surface of the first sliding rod. Through the cooperation of the housing, first sliding grooves, first sliding rods, first sliders, first springs, a moving plate, a support column, a fixed plate, a monitoring device body, a display, second sliding grooves, second sliding rods, second sliders, second springs, a movable rod, a first flexible hose, an exhaust fan, an exhaust pipe, a filter plate, a filter, an exhaust plate, a second flexible hose, and a dehumidifying fan, the air monitoring device can be protected from external damage when operating in complex external environments, thus achieving the purpose of providing a protective function for the air monitoring device.

[0004] The detection devices in the above technologies have a small monitoring range and cannot monitor air from different directions separately, nor can they filter the monitored air before emission. Improvements are needed. To address this, we propose a gas sensor for real-time monitoring of the concentration of key air pollutants. Summary of the Invention

[0005] The main technical problem solved by this invention is to provide a gas sensor that can monitor the concentration of key air pollutants in real time. This solves the problems of the detection device in the above-mentioned technology having a small monitoring range, being unable to monitor air from different directions separately, and being unable to filter the monitored air before emission.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, more specifically, a gas sensor capable of real-time monitoring of the concentration of key air pollutants, includes a monitoring box. A buffer mechanism is fixedly connected to the bottom of the monitoring box, a filter mechanism is fixedly connected to the right side of the monitoring box, a power supply is fixedly connected to the left side of the lower inner surface of the monitoring box, a display and an intelligent controller are fixedly connected sequentially from top to bottom on the front surface of the monitoring box, an L-shaped air inlet pipe is rotatably connected to the top of the monitoring box via a rotating shaft, the bottom end of the L-shaped air inlet pipe extends into the interior of the monitoring box and is fixedly connected to a bevel gear, and a docking monitoring mechanism is embedded and fixedly connected to the right side of the interior of the monitoring box, the docking monitoring mechanism being connected to the filter mechanism.

[0007] Furthermore, a filter screen is fixedly connected to the upper surface of the monitoring box outside the L-shaped air inlet pipe.

[0008] Furthermore, a motor is fixedly connected to the right side of the upper inner surface of the monitoring box, and a dial is fixedly connected to the bottom end of the output shaft of the motor. An arc-shaped tooth is fixedly connected to the outer side wall of the dial.

[0009] Furthermore, a toothed disc is fixedly connected to the upper side wall of the L-shaped air intake pipe, and the arc-shaped teeth mesh with the toothed disc.

[0010] Furthermore, a shrink box is fixedly connected to the left side of the monitoring box, a sliding plate is slidably connected inside the shrink box, and multiple springs are fixedly connected between the sliding plate and the shrink box. A meshing bar is fixedly connected to the right side of the sliding plate, and the right end of the meshing bar extends through to the right side of the shrink box and meshes with the toothed disc.

[0011] Furthermore, the buffer mechanism includes a hollow base, a buffer plate is slidably connected inside the hollow base, a plurality of springs are fixedly connected between the buffer plate and the hollow base, a plurality of support legs are fixedly connected to the bottom of the buffer plate, the bottom end of the support legs penetrates through the bottom of the hollow base and is fixedly connected to a caster wheel.

[0012] Furthermore, the filtration mechanism includes a filter box. Two drive rollers are rotatably connected to both sides of the inner front surface of the filter box via rotating shafts. An adhesive tape is connected between the two opposing drive rollers. The front ends of the central shafts of the two drive rollers located at the upper interior of the filter box extend to the front of the filter box and are fixedly connected to drive wheels. A drive belt is connected to the outer walls of the two drive wheels. The filter box is a hollow cuboid structure with an open rear surface. A box cover is installed on the rear surface of the filter box via bolts. An L-shaped mounting bracket is fixedly connected to the front surface of the filter box. A second motor is fixedly connected to the inner side of the L-shaped mounting bracket. The rear end of the output shaft of the second motor is fixedly connected to the center of the front surface of the drive wheel located on the left side of the front surface of the filter box.

[0013] Furthermore, two sealing ring grooves are formed on the outer wall of the L-shaped air intake pipe near the bevel gear. A through-hole is formed on the outer wall of the L-shaped air intake pipe between the two sealing ring grooves. A collar is fitted onto the outer wall of the L-shaped air intake pipe. A venting ring groove is formed on the inner wall of the collar. A through-hole is formed on the right side of the venting ring groove. Rubber rings are fixedly connected to the inner wall of the collar inside the two sealing ring grooves. An air pump is located to the right of the collar. The air pump input... The left end of the air pump is fixedly connected to the interior of the connecting port. The right end of the air pump is fixedly connected to a connecting pipe. A branch pipe is fixedly connected between the connecting pipe and the filter box. A limiting groove is opened on the inner side wall of the connecting pipe. A limiting block is slidably connected inside the limiting groove. A spring is fixedly connected between the limiting block and the limiting groove. A connector is fixedly connected to the outer side wall of the limiting block on the inner side of the connecting pipe. A through-hole is opened on the outer side wall of the connector. A conical head is integrally formed on the right end of the connector.

[0014] Furthermore, the docking monitoring mechanism includes a hollow cylinder. Inside the hollow cylinder, a turntable is rotatably connected via a rotating shaft. Multiple monitoring cylinders are embedded and fixedly connected to the right side of the turntable. Monitoring sensors are fixedly connected inside the monitoring cylinders. A shaft is fixedly connected to the left side of the turntable. A second bevel gear is fixedly connected to the right end of the shaft. The second bevel gear meshes with the first bevel gear. Through-hole ventilation holes are provided on the upper sides of both sides of the hollow cylinder. The ventilation hole on the right side of the hollow cylinder is connected to the interior of the filter box. The right end of the conical head passes through the ventilation hole on the left side of the hollow cylinder and extends into the interior of the monitoring cylinder located above the interior of the hollow cylinder.

[0015] The beneficial effects of the gas sensor of this invention, which can monitor the concentration of key air pollutants in real time, are as follows:

[0016] The monitoring box uses a buffer mechanism to cushion the movement of the air. The filter mechanism filters the air after it has been monitored by the docking monitoring mechanism and then discharges it. The docking monitoring mechanism can rotate with the L-shaped air inlet pipe via a bevel gear to move the internal docking position for monitoring. It can then monitor the outside air in different directions and display the monitoring results on the display. The power supply provides power to the whole system, and the intelligent controller is used for overall control.

[0017] When the motor rotates once, the arc-shaped teeth on the outer wall of the dial slightly move the dial to rotate the L-shaped air intake pipe, thus allowing the L-shaped air intake pipe to rotate to different directions for air intake.

[0018] The set shrink box and meshing bar can restrict the toothed disc, so that after the arc-shaped teeth on the outer wall of the toothed disc rotate, they limit the toothed disc. When the toothed disc rotates, it will squeeze the sliding plate through the meshing bar. Under the push of the spring, the meshing bar will abut against the outer wall of the toothed disc and mesh with it.

[0019] When the second motor is started, the transmission wheel and transmission belt drive the adhesive tape on the outer wall of the transmission roller. The adhesive tape is a tape with an adhesive surface, so that after the gas enters the filter box, it will pass through the adhesive tape to remove the attached dust and debris, and then be discharged through the filter box. The box cover can be opened so that the adhesive tape can be replaced.

[0020] After the air pump is started, it will draw in outside air through the L-shaped air inlet pipe, air outlet, air ring groove and connecting port, and then discharge it through the connecting pipe, connector and conical head. When the conical head is squeezed and moves to the left and is blocked, the connecting hole will connect with the branch pipe. At this time, the gas will be directly introduced into the filter box through the branch pipe for filtration and discharge.

[0021] When the motor starts and drives the L-shaped air intake pipe to rotate and adjust its direction, the turntable will rotate along with it under the transmission of bevel gear one and bevel gear two. This will then drive the monitoring cylinder to move its position, so that different monitoring cylinders can be connected to the conical head and the filter box. This method allows the air entering through the L-shaped air intake pipe from different directions to be monitored by the monitoring sensors inside the different monitoring cylinders, thereby obtaining monitoring results from different directions and making the monitoring range wider. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0023] Figure 1 This is a schematic diagram of the overall structure of the gas sensor of the present invention, which can monitor the concentration of key air pollutants in real time.

[0024] Figure 2 This is a partial cross-sectional view of the gas sensor of the present invention, which can monitor the concentration of key air pollutants in real time.

[0025] Figure 3 This is a cross-sectional schematic diagram of the buffer mechanism of the gas sensor of the present invention, which can monitor the concentration of key air pollutants in real time.

[0026] Figure 4 This is a partial structural diagram of the L-shaped air inlet pipe of the gas sensor of the present invention, which can monitor the concentration of key air pollutants in real time.

[0027] Figure 5 This is a cross-sectional view of the connection structure between the collar and the gas pump of the gas sensor of the present invention, which can monitor the concentration of key air pollutants in real time.

[0028] Figure 6 This is a cross-sectional view of the connecting pipe, branch pipe, connector, and conical head of the gas sensor of the present invention, which can monitor the concentration of key air pollutants in real time.

[0029] Figure 7 This invention relates to a gas sensor capable of real-time monitoring of key air pollutant concentrations. Figure 1 A magnified structural diagram at point A.

[0030] In the diagram: 1. Monitoring box; 2. Buffer mechanism; 3. Filtering mechanism; 4. Power supply; 5. Display; 6. Intelligent controller; 7. L-shaped air inlet pipe; 8. Bevel gear one; 9. Docking monitoring mechanism; 10. Filter screen cylinder; 11. Motor one; 12. Actuating disc; 13. Arc-shaped gear; 14. Gear disc; 15. Shrink box; 16. Sliding plate; 17. Spring one; 18. Engaging strip; 19. Sealing ring groove; 20. Air outlet; 21. Collar ring; 22. Ventilation ring groove; 23. Connecting port; 24. Rubber ring; 25. Air pump; 26. Connecting pipe; 27. Branch pipe; 28. Limiting groove; 29. Limiting block; 30. Spring 3; 31. Connector; 32. Docking hole; 33. Conical head; 201. Hollow base; 202. Buffer plate; 203. Spring 2; 204. Support leg; 205. Caster wheel; 301. Filter box; 302. Drive roller; 303. Adhesive tape; 304. Drive wheel; 305. Drive belt; 306. Box cover; 307. L-shaped mounting bracket; 308. Motor 2; 901. Hollow cylinder; 902. Turntable; 903. Monitoring cylinder; 904. Monitoring sensor; 905. Shaft; 906. Bevel gear 2; 907. Vent hole. Detailed Implementation

[0031] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0032] According to one aspect of the invention, such as Figure 1-7As shown, a gas sensor capable of real-time monitoring of the concentration of key air pollutants is provided, including a monitoring box 1. A buffer mechanism 2 is fixedly connected to the bottom of the monitoring box 1. A filter mechanism 3 is fixedly connected to the right side of the monitoring box 1. A power supply 4 is fixedly connected to the left side of the lower inner surface of the monitoring box 1. A display 5 and an intelligent controller 6 are fixedly connected to the front surface of the monitoring box 1 from top to bottom. An L-shaped air inlet pipe 7 is rotatably connected to the top of the monitoring box 1 via a rotating shaft. The bottom end of the L-shaped air inlet pipe 7 extends into the interior of the monitoring box 1 and is fixedly connected to a bevel gear 8. A docking monitoring mechanism 9 is embedded and fixedly connected to the right side of the interior of the monitoring box 1. The docking monitoring mechanism 9 is connected to the filter mechanism 3.

[0033] The monitoring box 1 uses the buffer mechanism 2 to buffer the movement. The air after being monitored by the docking monitoring mechanism 9 is filtered by the filter mechanism 3 and then discharged. The docking monitoring mechanism 9 can rotate with the L-shaped air inlet pipe 7 via the bevel gear 8 to move the internal docking position for monitoring. It can then monitor the outside air in different directions and display the monitoring results on the display 5. The power supply 4 provides power to the whole system, and the intelligent controller 6 is used for overall control.

[0034] In this embodiment, a filter screen 10 is fixedly connected to the upper surface of the monitoring box 1 on the outside of the L-shaped air inlet pipe 7;

[0035] It has a filtering effect, filtering out larger debris from the outside world and preventing air intake blockage in the L-shaped air intake pipe 7.

[0036] In this embodiment, a motor 11 is fixedly connected to the right side of the upper inner surface of the monitoring box 1. A toggle disc 12 is fixedly connected to the bottom end of the output shaft of the motor 11. An arc-shaped tooth 13 is fixedly connected to the outer side wall of the toggle disc 12. A toothed disc 14 is fixedly connected to the upper side of the outer side wall of the L-shaped air intake pipe 7. The arc-shaped tooth 13 and the toothed disc 14 are meshed together.

[0037] When the motor 11 is started, it rotates once. The arc-shaped teeth 13 on the outer wall of the dial 12 move the gear 14 slightly, which drives the L-shaped air intake pipe 7 to rotate, thereby driving the L-shaped air intake pipe 7 to rotate to different directions for air intake.

[0038] In this embodiment, a shrink box 15 is fixedly connected to the left side of the inside of the monitoring box 1. A sliding piece 16 is slidably connected inside the shrink box 15. A plurality of springs 17 are fixedly connected between the sliding piece 16 and the shrink box 15. A meshing strip 18 is fixedly connected to the right side of the sliding piece 16. The right end of the meshing strip 18 extends through to the right side of the shrink box 15 and meshes with the toothed disc 14.

[0039] It can restrict the toothed disc 14, so that after the arc-shaped teeth 13 on the outer wall of the actuating disc 12 actuate the toothed disc 14 to rotate, the toothed disc 14 is limited. When the toothed disc 14 rotates, it will squeeze the sliding piece 16 to slide through the meshing bar 18. Under the push of the spring 17, the meshing bar 18 will abut against the outer wall of the toothed disc 14 and mesh with it.

[0040] In this embodiment, the buffer mechanism 2 includes a hollow base 201, a buffer plate 202 is slidably connected inside the hollow base 201, a plurality of springs 203 are fixedly connected between the buffer plate 202 and the hollow base 201, a plurality of support legs 204 are fixedly connected to the bottom of the buffer plate 202, the bottom end of the support leg 204 penetrates through the bottom of the hollow base 201, and is fixedly connected to a caster wheel 205;

[0041] It facilitates the overall relocation of the device, thereby enabling monitoring to be carried out in different locations, and also provides a buffering effect during relocation.

[0042] In this embodiment, the filter mechanism 3 includes a filter box 301. Two transmission rollers 302 are rotatably connected to both sides of the inner front surface of the filter box 301 via a rotating shaft. An adhesive tape 303 is connected between the two upper and lower opposing transmission rollers 302. The front ends of the central shafts of the two transmission rollers 302 located at the upper part of the filter box 301 extend to the front of the filter box 301 and are fixedly connected to transmission wheels 304. A transmission belt 305 is connected to the outer side walls of the two transmission wheels 304. The filter box 301 is a hollow cuboid structure with an open rear surface. A box cover 306 is installed on the rear surface of the filter box 301 by bolts. An L-shaped mounting bracket 307 is fixedly connected to the front surface of the filter box 301. A second motor 308 is fixedly connected to the inner side of the L-shaped mounting bracket 307. The rear end of the output shaft of the second motor 308 is fixedly connected to the center of the front surface of the transmission wheel 304 located on the left side of the front surface of the filter box 301.

[0043] When the motor 308 is started, the transmission wheel 304 and the transmission belt 305 drive the adhesive tape 303 on the outer wall of the transmission roller 302. The adhesive tape 303 is an adhesive tape with an adhesive effect, so that after the gas enters the filter box 301, it will pass through the adhesive tape 303 to remove the attached dust and debris, and then be discharged through the filter box 301. The box cover 306 can be opened, and the adhesive tape 303 can be replaced.

[0044] In this embodiment, two sealing ring grooves 19 are formed on the outer wall of the L-shaped air intake pipe 7 near the bevel gear 8. A through-hole vent 20 is formed on the outer wall of the L-shaped air intake pipe 7 between the two sealing ring grooves 19. A collar 21 is fitted on the outer wall of the L-shaped air intake pipe 7. A ventilation ring groove 22 is formed on the inner wall of the collar 21. A through-hole vent 23 is formed on the right side of the ventilation ring groove 22. Rubber rings 24 are fixedly connected to the inner wall of the collar 21 on the inner side of the two sealing ring grooves 19. An air pump 25 is arranged to the right of the collar 21. The left end of the input end of the air pump 25 is... The air pump 25 is fixedly connected to the inside of the connecting port 23. The right end of the output end of the air pump 25 is fixedly connected to the connecting pipe 26. The connecting pipe 26 is fixedly connected to the filter box 301 by a branch pipe 27. The inner side wall of the connecting pipe 26 is provided with a limiting groove 28. The limiting groove 28 is slidably connected to a limiting block 29. A spring 30 is fixedly connected between the limiting block 29 and the limiting groove 28. The outer side wall of the limiting block 29 is located inside the connecting pipe 26 and is fixedly connected to a connector 31. The outer side wall of the connector 31 is provided with a through-hole 32. The right end of the connector 31 is integrally formed with a conical head 33.

[0045] After the air pump 25 is started, it will draw in outside air through the L-shaped air inlet pipe 7, air outlet 20, air ring groove 22 and connecting port 23, and then discharge it through the connecting pipe 26, connector 31 and conical head 33. When the conical head 33 is squeezed and moves to the left and is blocked, the connecting hole 32 will be connected to the branch pipe 27. At this time, the gas will be directly introduced into the filter box 301 for filtration and discharge through the branch pipe 27.

[0046] In this embodiment, the docking monitoring mechanism 9 includes a hollow cylinder 901. A turntable 902 is rotatably connected to the inside of the hollow cylinder 901 via a rotating shaft. Multiple monitoring cylinders 903 are embedded and fixedly connected to the right side of the turntable 902. A monitoring sensor 904 is fixedly connected inside the monitoring cylinder 903. A shaft 905 is fixedly connected to the left side of the turntable 902. A bevel gear 906 is fixedly connected to the right end of the shaft 905. The bevel gear 906 meshes with the bevel gear 8. A through-hole vent 907 is provided on the upper sides of both sides of the hollow cylinder 901. The vent 907 on the right side of the hollow cylinder 901 is connected to the inside of the filter box 301. The right end of the conical head 33 passes through the vent 907 on the left side of the hollow cylinder 901 and extends into the inside of the monitoring cylinder 903 located above the inside of the hollow cylinder 901.

[0047] When motor 11 starts and drives the L-shaped air intake pipe 7 to rotate and adjust its direction, the turntable 902 will rotate together under the transmission of bevel gear 1 8 and bevel gear 2 906. This will then drive the monitoring cylinder 903 to move to a different position, so that different monitoring cylinders 903 can be connected to the conical head 33 and the filter box 301. This method allows the air entering from the L-shaped air intake pipe 7 in different directions to be monitored by the monitoring sensors 904 inside different monitoring cylinders 903, thereby obtaining monitoring results in different directions. The monitoring range is wider. As the turntable 902 rotates, when the conical head 33 is disengaged from one vent hole 907, it will be squeezed and moved to the left and blocked by the turntable 902 until it is connected to the next vent hole 907.

[0048] The working principle of this device is as follows: the monitoring box 1 uses the buffer mechanism 2 to buffer the movement, and the air after being monitored by the docking monitoring mechanism 9 is filtered and discharged through the filter mechanism 3. The docking monitoring mechanism 9 can rotate with the L-shaped air inlet pipe 7 via the bevel gear 8 to move the internal docking position for monitoring, thereby monitoring the outside air in different directions, and displaying the monitoring results on the display 5. The power supply 4 provides power to the whole system, and the intelligent controller 6 is used for overall control.

[0049] All electrical components mentioned in this article are real-world electrical components.

[0050] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A gas sensor capable of real-time monitoring of the concentration of key air pollutants, comprising a monitoring box (1), characterized in that: A buffer mechanism (2) is fixedly connected to the bottom of the monitoring box (1), a filter mechanism (3) is fixedly connected to the right side of the monitoring box (1), a power supply (4) is fixedly connected to the left side of the lower inner surface of the monitoring box (1), a display (5) and an intelligent controller (6) are fixedly connected to the front surface of the monitoring box (1) from top to bottom, an L-shaped air inlet pipe (7) is rotatably connected to the top of the monitoring box (1) through a rotating shaft, the bottom end of the L-shaped air inlet pipe (7) extends into the interior of the monitoring box (1) and is fixedly connected to a bevel gear (8), a docking monitoring mechanism (9) is embedded and fixedly connected to the right side of the interior of the monitoring box (1), and the docking monitoring mechanism (9) is connected to the filter mechanism (3).

2. The gas sensor capable of real-time monitoring of key air pollutant concentrations according to claim 1, characterized in that: A filter screen (10) is fixedly connected to the upper surface of the monitoring box (1) outside the L-shaped air inlet pipe (7).

3. The gas sensor capable of real-time monitoring of key air pollutant concentrations according to claim 1, characterized in that: A motor (11) is fixedly connected to the right side of the upper inner surface of the monitoring box (1). A dial (12) is fixedly connected to the bottom end of the output shaft of the motor (11). An arc-shaped tooth (13) is fixedly connected to the outer side wall of the dial (12).

4. The gas sensor capable of real-time monitoring of key air pollutant concentrations according to claim 3, characterized in that: A toothed disc (14) is fixedly connected above the outer wall of the L-shaped air intake pipe (7), and the arc-shaped teeth (13) mesh with the toothed disc (14).

5. The gas sensor capable of real-time monitoring of key air pollutant concentrations according to claim 4, characterized in that: A shrink box (15) is fixedly connected to the left side of the inside of the monitoring box (1). A sliding piece (16) is slidably connected inside the shrink box (15). A plurality of springs (17) are fixedly connected between the sliding piece (16) and the shrink box (15). A meshing strip (18) is fixedly connected to the right side of the sliding piece (16). The right end of the meshing strip (18) extends through to the right side of the shrink box (15) and meshes with the toothed disc (14).

6. The gas sensor capable of real-time monitoring of key air pollutant concentrations according to claim 1, characterized in that: The buffer mechanism (2) includes a hollow base (201), a buffer plate (202) is slidably connected inside the hollow base (201), a plurality of springs (203) are fixedly connected between the buffer plate (202) and the hollow base (201), a plurality of support legs (204) are fixedly connected to the bottom of the buffer plate (202), the bottom end of the support leg (204) penetrates through the bottom of the hollow base (201) and is fixedly connected to a caster wheel (205).

7. The gas sensor capable of real-time monitoring of key air pollutant concentrations according to claim 1, characterized in that: The filtration mechanism (3) includes a filter box (301). Two drive rollers (302) are rotatably connected to both sides of the inner front surface of the filter box (301) via rotating shafts. An adhesive tape (303) is connected between the two opposing drive rollers (302) for mutual transmission. The front ends of the central shafts of the two drive rollers (302) located above the interior of the filter box (301) extend to the front of the filter box (301) and are fixedly connected to drive wheels (304). The outer walls of the two drive wheels (304) are connected for mutual transmission. A transmission belt (305) is connected. The filter box (301) is a hollow cuboid structure with an open rear surface. The rear surface of the filter box (301) is fitted with a box cover (306) by bolts. An L-shaped mounting bracket (307) is fixedly connected to the front surface of the filter box (301). A second motor (308) is fixedly connected to the inner side of the L-shaped mounting bracket (307). The rear end of the output shaft of the second motor (308) is fixedly connected to the center of the front surface of the transmission wheel (304) located on the left side of the front surface of the filter box (301).

8. The gas sensor capable of real-time monitoring of key air pollutant concentrations according to claim 7, characterized in that: Two sealing ring grooves (19) are provided on the outer wall of the L-shaped air intake pipe (7) near the bevel gear (8). A through-hole (20) is provided on the outer wall of the L-shaped air intake pipe (7) between the two sealing ring grooves (19). A collar (21) is fitted on the outer wall of the L-shaped air intake pipe (7). A ventilation ring groove (22) is provided on the inner wall of the collar (21). A through-hole (23) is provided on the right side of the ventilation ring groove (22). Rubber rings (24) are fixedly connected to the inner side of the collar (21) inside the two sealing ring grooves (19). An air pump (25) is provided on the right side of the collar (21). The left end of the input end of the air pump (25) is connected to the through-hole (23). The internal fixed connection of the air pump (25) is fixedly connected to the right end of the output end of the air pump (25) and the filter box (301) is fixedly connected to the branch pipe (27). The inner side wall of the connecting pipe (26) is provided with a limiting groove (28). The limiting groove (28) is slidably connected to the inside of the limiting block (29). The limiting block (29) and the limiting groove (28) are fixedly connected to a spring (30). The outer side wall of the limiting block (29) is located inside the connecting pipe (26) and is fixedly connected to a connector (31). The outer side wall of the connector (31) is provided with a through-hole (32). The right end of the connector (31) is integrally formed with a conical head (33).

9. The gas sensor capable of real-time monitoring of key air pollutant concentrations according to claim 8, characterized in that: The docking monitoring mechanism (9) includes a hollow cylinder (901). A turntable (902) is rotatably connected inside the hollow cylinder (901) via a rotating shaft. Multiple monitoring cylinders (903) are embedded and fixedly connected to the right side of the turntable (902). Monitoring sensors (904) are fixedly connected inside the monitoring cylinders (903). A shaft (905) is fixedly connected to the left side of the turntable (902). A bevel gear (906) is fixedly connected to the right end of the shaft (905). (906) meshes with the bevel gear (8). Both sides of the hollow cylinder (901) are provided with through-hole ventilation holes (907). The ventilation hole (907) on the right side of the hollow cylinder (901) is connected to the interior of the filter box (301). The right end of the conical head (33) passes through the ventilation hole (907) on the left side of the hollow cylinder (901) and extends into the interior of the monitoring cylinder (903) located above the interior of the hollow cylinder (901).

Images