A miniature ambient air quality monitoring device

Abstract

This utility model relates to the technical field of air quality monitoring, and in particular to a miniature environmental air quality monitoring device. It can achieve automatic and rapid switching of monitoring sensor groups, is easy to operate, can work continuously, and has good safety. It includes a housing, a main body of the monitor, and a door. The housing has an internal equipment chamber. It also includes an air inlet pipe, a mounting bracket, a sensor disc, a motor, and an air pump. The air inlet pipe extends into the equipment chamber of the housing. The sensor disc is rotatably mounted on the mounting bracket. The motor is also mounted on the mounting bracket, and its output shaft is concentrically connected to the sensor disc. Multiple monitoring through-holes are evenly arranged around the circumference of the sensor disc, and different monitoring sensors are installed in each of these through-holes. The multiple monitoring through-holes of the sensor disc are concentrically aligned with the lower end of the air inlet pipe. The air pump's suction port is aligned with the lower end of the monitoring through-holes of the sensor disc, and the air pump's suction port is located below the lower end of the air inlet pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of air quality monitoring, and in particular to a miniature ambient air quality monitoring device. Background Technology

[0002] To better protect the environment, it is necessary to monitor ambient air quality. Chinese utility model patent CN223077689U discloses a multifunctional miniature ambient air quality monitoring device. This device includes a housing with an extension platform on each of its left and right sides. The front of the housing has an internal cavity, and the rear of the housing has an exhaust pipe mounting hole. To the left of the exhaust pipe mounting hole is a first mounting hole penetrating the internal cavity, and on the side of the first mounting hole away from the internal cavity is a second mounting hole. By incorporating integrated circuits that allow for the replacement of different sensors, it achieves personalized customization, enabling the combination of different sensors according to customer needs. Each sensor can be individually plugged in, calibrated, and replaced. Furthermore, by incorporating a pump-suction dust collector component, it utilizes a pump-suction sampling method, making it suitable for various operating conditions.

[0003] The aforementioned ambient air monitoring device can replace the sensors used to monitor the air, but manually replacing the sensors during use is cumbersome, not suitable for continuous operation, and is particularly dangerous in hazardous environments. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a miniature ambient air quality monitoring device that can achieve automatic and rapid switching of monitoring sensor groups, is easy to operate, can work continuously, and has good safety.

[0005] This utility model discloses a miniature ambient air quality monitoring device, comprising a housing, a monitoring instrument body, and a door. The housing contains an internal equipment chamber, and a loading / unloading port is located on the front side of the housing. The monitoring instrument body is installed within the equipment chamber, and the door hinge is mounted on the loading / unloading port. The device also includes an air inlet pipe, a mounting bracket, a sensor disc, a motor, and an air pump. The air inlet pipe is mounted on the top of the housing, with its lower end extending into the equipment chamber. The mounting bracket is installed within the equipment chamber, and the sensor disc is rotatably mounted on the mounting bracket. The motor is also mounted on the mounting bracket, and its output shaft is concentrically connected to the sensor disc. Multiple monitoring through-holes are evenly distributed around the circumference of the sensor disc, each housing a different monitoring sensor. These through-holes are concentrically aligned with the lower end of the air inlet pipe. The air pump is installed within the equipment chamber, with its suction port aligned with the lower end of one of the monitoring through-holes on the sensor disc. Located below the lower port of the air inlet pipe, the sensor disk houses multiple monitoring holes, each containing sensor groups with different sensitivities, targeting different air components, and performing different functions. These sensor groups are electrically connected to the main body of the monitor. During operation, one monitoring hole of the sensor disk aligns with the lower port of the air inlet pipe and the air pump's intake port. The air pump draws air from outside the enclosure through the air inlet pipe, the monitoring hole of the sensor disk, and the intake port, allowing the air to pass through the sensor groups within the monitoring holes. This enables the monitoring of air composition and pollution levels. When a sensor group needs to be replaced to adapt to the current ambient air, a motor drives the sensor disk to rotate a certain angle, aligning the corresponding monitoring hole with the lower port of the air inlet pipe and the air pump's intake port. This achieves automatic and rapid switching of the sensor groups, eliminating the need for manual operation. The system is easy to operate, can work continuously, and avoids the danger of personnel changing sensors in hazardous environments, ensuring high safety.

[0006] Preferably, it also includes an upper connecting pipe and a rain cover. The upper connecting pipe is installed on the upper port of the air intake pipe, and multiple air intake holes are evenly arranged around the side wall of the upper connecting pipe. The rain cover is installed on the upper end of the upper connecting pipe. By installing the upper connecting pipe and the rain cover, a rain-proof assembly for the air intake pipe is formed, which reduces the entry of rainwater and dust into the air intake pipe and improves the reliability of the device.

[0007] Preferably, the device also includes a rotating shaft, a wind sensor, and a deflector. The rotating shaft is rotatably mounted on the rain cover, with its lower end extending into the upper pipe. The wind sensor is mounted on the upper end of the rotating shaft, and the deflector is mounted on the lower end of the rotating shaft. The deflector is arc-shaped, and its concave surface always faces the direction of the oncoming wind under the influence of the wind sensor. The deflector blocks multiple air inlets of the upper pipe. During operation, the wind sensor monitors the wind direction and speed. As the wind sensor rotates with the wind direction, it drives the rotating shaft to rotate, which in turn drives the deflector to rotate, ensuring that the concave surface of the deflector always faces the direction of the oncoming wind. The deflector blocks multiple air inlets of the upper pipe in the wind direction, thereby increasing the air intake of the upper pipe and the air inlet pipe and improving monitoring efficiency.

[0008] Preferably, the system also includes a slide, a sample disc, a second motor, a pusher cylinder, and multiple gas sample bottles. The slide is slidably mounted in the equipment chamber of the housing. The sample disc is rotatably mounted on the slide, and multiple gas sample bottle insertion holes are evenly arranged around the circumference of the sample disc. These insertion holes are aligned with the discharge port of the air pump. The second motor is mounted on the slide, and its output shaft is concentrically connected to the sample disc. The fixed end of the pusher cylinder is mounted in the equipment chamber of the housing, and the top of its piston rod is connected to the slide. When the housing is moved to monitor multiple locations in the environment, and the dwell time at these locations is short, air from these locations can be separately filled into multiple gas sample bottles. Subsequent monitoring of the air samples in these bottles can be performed during the movement or after sample collection. Specifically, the air sample collection method is as follows: the second motor drives the sample disc... The disk rotates at a certain angle, aligning the mouth of a gas sample bottle with the discharge port of the air pump. The piston rod of the push cylinder extends, pushing the slide and sample disk upwards, allowing the discharge port of the air pump to insert into the mouth of the gas sample bottle. The air pump operates, forcing outside air into the gas sample bottle. The piston rod of the push cylinder retracts, causing the slide and sample disk to descend, allowing the discharge port of the air pump to be extracted from the gas sample bottle, thus storing the air sample and completing the air sample collection. The above operation is repeated to collect ambient air at multiple monitoring locations. During the movement of the chamber, the push cylinder pushes the slide and sample disk upwards, allowing the discharge port of the air pump to re-insert into the mouth of the gas sample bottle. The air pump reverses, extracting the air sample from the gas sample bottle and blowing it back into the monitoring through-hole of the sensor disk, thereby performing subsequent monitoring of the air sample. The above operation is repeated to perform subsequent monitoring of air samples at multiple monitoring locations.

[0009] Preferably, the gas sample bottle includes a bottle body, a gate, and a spring plate. The lower part of the bottle body is detachably inserted into the gas sample bottle insertion hole of the sample disc. The inside of the bottle body is provided with a gas sample chamber. The upper end of the bottle body is provided with a bottle mouth that matches the discharge port of the air pump. The bottle mouth communicates with the gas sample chamber. The gate is hinged and installed inside the gas sample chamber of the bottle body. One end of the spring plate is connected to the gate, and the other end of the spring plate is connected to the inner wall of the bottle body. The elasticity of the spring plate causes the gate to close the bottle mouth of the bottle body from the inside. After the discharge port of the air pump is inserted into the bottle mouth of the bottle body, the gate is pushed into the gas sample chamber to open it, so that the air pump can fill the gas sample chamber with air. When the discharge port of the air pump is pulled out from the bottle mouth of the bottle body, the elasticity of the spring plate causes the gate to close the bottle mouth, thereby realizing the collection and storage of air samples.

[0010] Preferably, the system also includes multiple pistons, with a pressure relief hole at the bottom of each of the multiple bottles communicating with the gas sample chamber. The multiple pistons are slidably installed in the gas sample chambers of the multiple bottles. Before air sample collection, the multiple pistons are pushed up to the bottle openings of the multiple bottles. When the air sample is filled into the gas sample chamber of the bottle, the air sample pushes the pistons towards the bottom of the gas sample chamber of the bottle, thereby avoiding the influence of the original air in the gas sample chamber of the bottle on the air sample and improving the accuracy of subsequent sample monitoring.

[0011] Preferably, it also includes a plug rod and multiple support rods. The plug rod is installed at the bottom of the box, and multiple support rods are rotatably installed on the lower outer wall of the plug rod. When temporarily setting up the box, the multiple support rods are opened to the outside of the plug rod, and the lower end of the plug rod is inserted into the ground at the monitoring position. The multiple support rods provide auxiliary support for the plug rod, so as to realize the temporary and rapid setting up of the box.

[0012] Preferably, it also includes a limiting plate, which is installed on the upper outer wall of the plug rod; when moving the box, the plug rod is inserted into the socket of the carrier, and the limiting plate limits the plug rod, making the box and the plug rod more stable during the movement.

[0013] Compared with the prior art, the advantages of this utility model are: it can realize automatic and rapid switching of monitoring sensor groups, without manual operation, is easy to operate, can work continuously, avoids the danger to staff when changing sensors in harmful environments, and has good safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model for extracting outside air to monitor air quality. Figure 3 This is a schematic diagram of the structure of the present invention for monitoring the air quality status of the air sample bottle. Figure 4It is a structural diagram of the air intake pipe, sensor disk, motor one, air pump, rain cover, wind sensor, sample disk, motor two, and push cylinder, etc. Figure 5 It is a structural diagram showing the disassembled state of the air intake pipe, upper pipe, rain cover, rotating shaft, wind sensor and deflector, etc. Figure 6 yes Figure 2 A magnified schematic diagram of the local structure at point A; Figure 7 yes Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0015] The following components are labeled in the attached diagram: 1. Box body; 2. Monitor body; 3. Box door; 4. Air inlet pipe; 5. Mounting bracket; 6. Sensor disc; 7. Motor 1; 8. Air pump; 9. Top pipe; 10. Rain cover; 11. Rotating shaft; 12. Wind sensor; 13. Guide plate; 14. Slide carriage; 15. Sample disc; 16. Motor 2; 17. Push cylinder; 18. Bottle body; 19. Gate plate; 20. Spring plate; 21. Piston; 22. Insert rod; 23. Support rod; 24. Limiting plate. Detailed Implementation

[0016] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0017] like Figures 1 to 5As shown, a miniature ambient air quality monitoring device includes a housing 1, a monitoring instrument body 2, and a door 3. The housing 1 has an internal equipment chamber, and a loading / unloading port is located on the front side of the housing 1. The monitoring instrument body 2 is installed in the equipment chamber, and the door 3 is hinged to the loading / unloading port of the housing 1. It also includes an air inlet pipe 4, a mounting bracket 5, a sensor disc 6, a motor 7, and an air pump 8. The air inlet pipe 4 is installed on the top of the housing 1, with its lower end extending into the equipment chamber. The mounting bracket 5 is installed in the equipment chamber of the housing 1. The sensor disc 6 is rotatably mounted on the mounting bracket 5, and the motor 7 is mounted on the mounting bracket 5. The output shaft of the motor 7 is concentrically connected to the sensor disc 6. Multiple monitoring through-holes are evenly distributed around the circumference of the sensor disc 6, and different monitoring sensors are installed in each of these through-holes. The multiple monitoring through-holes of the sensor disc 6 are connected to the air inlet pipe 8. The lower ends of pipe 4 are concentrically aligned. Air pump 8 is installed in the equipment chamber of housing 1. The air intake of air pump 8 is aligned with the lower end of the monitoring through hole of sensor disk 6, and the air intake of air pump 8 is located below the lower end of air intake pipe 4. It also includes upper pipe 9 and rain cover 10. Upper pipe 9 is installed on the upper end of air intake pipe 4. Multiple air intake holes are evenly arranged on the side wall of upper pipe 9. Rain cover 10 is installed on the upper end of upper pipe 9. It also includes a rotating shaft 11, wind sensor 12 and guide plate 13. Rotating shaft 11 is rotatably installed on rain cover 10. The lower end of rotating shaft 11 extends into upper pipe 9. Wind sensor 12 is installed on the upper end of rotating shaft 11. Guide plate 13 is installed on the lower end of rotating shaft 11. Guide plate 13 is arc-shaped. The concave surface of guide plate 13 always faces the direction of the wind under the action of wind sensor 12. Guide plate 13 blocks multiple air intake holes of upper pipe 9.

[0018] By installing the upper pipe 9 and the rain cover 10 to form a rainproof assembly for the air intake pipe 4, rainwater and dust entering the air intake pipe 4 are reduced, improving the reliability of the device. The wind sensor 12 monitors the wind direction and wind speed. When the wind sensor 12 rotates with the wind direction, it drives the rotating shaft 11 to rotate. The rotating shaft 11 drives the guide plate 13 to rotate, so that the concave surface of the guide plate 13 always faces the wind direction. The guide plate 13 is blocked by multiple air intake holes of the upper pipe 9 in the wind direction, thereby increasing the air intake of the upper pipe 9 and the air intake pipe 4 and improving the monitoring efficiency. Different sensor groups with different sensitivities, targeting different air components and different functions are installed in the multiple monitoring through holes of the sensor disk 6. The sensor groups are electrically connected to the main body 2 of the monitoring instrument. During operation, the sensor disk... One of the monitoring through holes of sensor disk 6 is aligned with the lower port of air inlet pipe 4 and the air extraction port of air pump 8. When air pump 8 is running, air from outside the housing 1 enters the air pump 8 through air inlet pipe 4, one of the monitoring through holes of sensor disk 6 and the air extraction port. The air then passes through the sensor group in the monitoring through hole, thereby monitoring the composition and pollution level of the air. When the monitoring sensor group needs to be replaced to adapt to the current ambient air, motor 7 drives sensor disk 6 to rotate a certain angle, so that the corresponding monitoring through hole is aligned with the lower port of air inlet pipe 4 and the air extraction port of air pump 8. This achieves automatic and rapid switching of the monitoring sensor group without manual operation, making it easy to operate and capable of continuous operation. It also avoids the danger to personnel when replacing sensors in a hazardous environment, ensuring good safety. Example 2

[0019] like Figures 1 to 4 , Figure 6 and Figure 7 As shown, based on Example 1, it also includes a slide 14, a sample disc 15, a second motor 16, a pusher cylinder 17, and multiple gas sample bottles. The slide 14 is slidably mounted in the equipment chamber of the housing 1. The sample disc 15 is rotatably mounted on the slide 14. Multiple gas sample bottle insertion holes are evenly arranged around the circumference of the sample disc 15. The multiple gas sample bottle insertion holes are aligned with the discharge hole of the air pump 8. The second motor 16 is mounted on the slide 14. The output shaft of the second motor 16 is concentrically connected to the sample disc 15. The fixed end of the pusher cylinder 17 is mounted in the equipment chamber of the housing 1. The top of the piston rod of the pusher cylinder 17 is connected to the slide 14.

[0020] When the moving configuration of chamber 1 requires monitoring multiple locations in the environment, and the dwell time at these locations is short, air from these locations can be separately filled into multiple gas sample bottles. During the movement or after sample collection, the air samples in these bottles can be monitored subsequently. Specifically, the air sample collection method is as follows: Motor 2 16 drives the sample disc 15 to rotate at a certain angle, aligning the mouth of one gas sample bottle with the discharge port of the air pump 8. The piston rod of the push cylinder 17 extends, pushing the slide 14 and sample disc 15 upwards, causing the discharge port of the air pump 8 to insert into the mouth of the gas sample bottle. The air pump 8 then compresses the air outside chamber 1. When the gas sample bottle is filled, the piston rod of the push cylinder 17 retracts, causing the slide 14 and sample disk 15 to descend, which allows the discharge port of the air pump 8 to be drawn out of the gas sample bottle, thus storing the air sample in the gas sample bottle and completing the air sample collection. The above operation is repeated to collect ambient air at multiple monitoring locations. During the movement of the housing 1, the push cylinder 17 pushes the slide 14 and sample disk 15 up, causing the discharge port of the air pump 8 to be inserted back into the mouth of the gas sample bottle. The air pump 8 reverses and draws the air sample out of the gas sample bottle and blows it back into the monitoring through hole of the sensor disk 6, thereby performing subsequent monitoring of the air sample. The above operation is repeated to perform subsequent monitoring of air samples at multiple monitoring locations.

[0021] The gas sample bottle includes a bottle body 18, a gate 19, and a spring plate 20. The lower part of the bottle body 18 is detachably inserted into the gas sample bottle insertion hole of the sample disc 15. The inside of the bottle body 18 is provided with a gas sample chamber. The upper end of the bottle body 18 is provided with a bottle mouth that matches the discharge port of the air pump 8. The bottle mouth communicates with the gas sample chamber. The gate 19 is hinged and installed inside the gas sample chamber of the bottle body 18. One end of the spring plate 20 is connected to the gate 19, and the other end of the spring plate 20 is connected to the inner wall of the bottle body 18. The elastic force of the spring plate 20 causes the gate 19 to close the bottle mouth of the bottle body 18 from the inside. It also includes multiple pistons 21. The bottom of each of the multiple bottles 18 is provided with a pressure relief hole that communicates with the gas sample chamber. The multiple pistons 21 are slidably installed in the gas sample chambers of the multiple bottles 18 respectively.

[0022] After the discharge port of the air pump 8 is inserted into the mouth of the bottle body 18, the gate 19 is pushed into the gas sample chamber to open it, allowing the air pump 8 to fill the gas sample chamber with air. When the discharge port of the air pump 8 is pulled out from the mouth of the bottle body 18, the elastic force of the spring plate 20 causes the gate 19 to close the mouth of the bottle, realizing the collection and storage of air samples. Before collecting air samples, multiple pistons 21 are pushed up to the mouths of multiple bottles 18. When the air sample is filled into the gas sample chamber of the bottle body 18, the air sample pushes the piston 21 towards the bottom of the gas sample chamber of the bottle body 18, thereby avoiding the influence of the original air in the gas sample chamber of the bottle body 18 on the air sample and improving the accuracy of subsequent sample monitoring. Example 3

[0023] like Figures 1 to 3As shown, based on Embodiment 2, it also includes an insertion rod 22 and multiple support rods 23. The insertion rod 22 is installed at the bottom of the housing 1, and multiple support rods 23 are rotatably installed on the lower outer wall of the insertion rod 22. It also includes a limiting plate 24, which is installed on the upper outer wall of the insertion rod 22. When temporarily setting up the housing 1, the multiple support rods 23 are opened to the outside of the insertion rod 22, and the lower end of the insertion rod 22 is inserted into the ground at the monitoring position. The multiple support rods 23 provide auxiliary support for the insertion rod 22, realizing the temporary and rapid setting up of the housing 1. When moving the housing 1, the insertion rod 22 is inserted into the socket of the vehicle, and the insertion rod 22 is limited by the limiting plate 24, so that the housing 1 and the insertion rod 22 are more stable during the movement.

[0024] like Figures 1 to 7 As shown, this utility model discloses a miniature ambient air quality monitoring device. During operation, firstly, a monitoring through-hole of the sensor disk 6 is aligned with the lower port of the air inlet pipe 4 and the air extraction port of the air pump 8. The air pump 8 operates, allowing outside air to enter the housing 1 through the air inlet pipe 4, the monitoring through-hole of the sensor disk 6, and the air extraction port. This air then passes through the sensor group within the monitoring through-hole, thereby monitoring the air composition and pollution level. When the monitoring sensor group needs to be replaced to adapt to the current ambient air, the motor 7 drives the sensor disk 6 to rotate a certain angle, aligning the corresponding monitoring through-hole with the lower port of the air inlet pipe 4 and the air extraction port of the air pump 8, thus achieving automatic and rapid switching of the monitoring sensor group. Then, when the housing 1 is moved to monitor multiple locations in the environment, and the dwell time at these locations is short, the air from these locations can be separately filled into multiple gas sample bottles. During the movement or after sample collection, the air samples in the multiple gas sample bottles are then further processed. Monitoring; the specific air sample collection method is as follows: Motor 2 16 drives the sample disc 15 to rotate at a certain angle, so that the mouth of a gas sample bottle is aligned with the discharge port of the air pump 8. The piston rod of the push cylinder 17 extends, pushing the slide 14 and the sample disc 15 upward, so that the discharge port of the air pump 8 is inserted into the mouth of the gas sample bottle. The air pump 8 operates, forcing the outside air of the chamber 1 into the gas sample bottle. The piston rod of the push cylinder 17 retracts, causing the slide 14 and the sample disc 15 to descend, so that the discharge port of the air pump 8 is extracted from the gas sample bottle, allowing the air to be collected. The sample bottle stores the air sample, completing the air sample collection. The above operation is repeated to collect ambient air at multiple monitoring locations. Finally, during the movement of the housing 1, the push cylinder 17 pushes the slide 14 and sample disk 15 up, so that the discharge port of the air pump 8 is inserted back into the mouth of the gas sample bottle. The air pump 8 reverses to extract the air sample from the gas sample bottle and blow it back into the monitoring through hole of the sensor disk 6, thereby performing subsequent monitoring of the air sample. The above operation is repeated to perform subsequent monitoring of air samples at multiple monitoring locations.

[0025] The main functions achieved by this utility model are: 1. It can realize automatic and rapid switching of monitoring sensor groups without manual operation, is easy to operate, can work continuously, and avoids the danger to staff when changing sensors in harmful environments, thus ensuring good safety. 2. The wind sensor 12 drives the guide plate 13 to guide the airflow, thereby increasing the air intake of the upper pipe 9 and the air intake pipe 4 and improving the monitoring efficiency. 3. It can collect air samples for subsequent monitoring, enabling rapid monitoring at multiple locations; 4. It can be quickly deployed in a designated location.

[0026] The miniature ambient air quality monitoring device of this utility model uses common mechanical methods for installation, connection, or setting. Any method that can achieve its beneficial effect can be implemented. The housing 1, monitoring instrument body 2, housing door 3, sensor disc 6, motor 1 7, air pump 8, rotating shaft 11, wind sensor 12, slide 14, motor 2 16, push cylinder 17, bottle body 18, gate 19, spring plate 20, piston 21, and insertion rod 22 of this miniature ambient air quality monitoring device are commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0027] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A miniature ambient air quality monitoring device, comprising a housing (1), a monitoring instrument body (2), and a door (3), wherein the housing (1) has an internal equipment chamber, the front end of the housing (1) has a loading / unloading port, the monitoring instrument body (2) is installed in the equipment chamber, and the door (3) is hinged to the loading / unloading port of the housing (1); characterized in that, It also includes an air inlet pipe (4), a mounting bracket (5), a sensor disc (6), a motor (7), and an air pump (8). The air inlet pipe (4) is installed on the top of the housing (1), and the lower end of the air inlet pipe (4) extends into the equipment chamber of the housing (1). The mounting bracket (5) is installed in the equipment chamber of the housing (1). The sensor disc (6) is rotatably mounted on the mounting bracket (5). The motor (7) is mounted on the mounting bracket (5). The output shaft of the motor (7) is concentrically connected to the sensor disc (6). Multiple monitoring through holes are evenly arranged on the circumference of the sensor disc (6). Different monitoring sensors are installed in the multiple monitoring through holes. The multiple monitoring through holes of the sensor disc (6) are concentrically aligned with the lower port of the air inlet pipe (4). The air pump (8) is installed in the equipment chamber of the housing (1). The air pump (8) is aligned with the lower end of the monitoring through hole of the sensor disc (6), and the air pump (8) is located below the lower port of the air inlet pipe (4).

2. A microenvironmental air quality monitoring device as claimed in claim 1, wherein, It also includes an upper pipe (9) and a rain cover (10). The upper pipe (9) is installed on the upper port of the air intake pipe (4). Multiple air intake holes are evenly arranged on the side wall of the upper pipe (9). The rain cover (10) is installed on the upper end of the upper pipe (9).

3. A micro-environmental air quality monitoring device as claimed in claim 2, wherein, It also includes a rotating shaft (11), a wind sensor (12), and a deflector (13). The rotating shaft (11) is rotatably mounted on the rain cover (10). The lower end of the rotating shaft (11) extends into the upper pipe (9). The wind sensor (12) is mounted on the upper end of the rotating shaft (11). The deflector (13) is mounted on the lower end of the rotating shaft (11). The deflector (13) is arc-shaped. The concave surface of the deflector (13) always faces the direction of the wind under the action of the wind sensor (12). The deflector (13) blocks multiple air inlets of the upper pipe (9).

4. The miniature ambient air quality monitoring device as described in claim 1, characterized in that, It also includes a slide (14), a sample disc (15), a second motor (16), a push cylinder (17), and multiple gas sample bottles. The slide (14) is slidably mounted in the equipment chamber of the housing (1). The sample disc (15) is rotatably mounted on the slide (14). Multiple gas sample bottle insertion holes are evenly arranged on the circumference of the sample disc (15). The multiple gas sample bottle insertion holes are aligned with the discharge hole of the gas pump (8). The second motor (16) is mounted on the slide (14). The output shaft of the second motor (16) is concentrically connected to the sample disc (15). The fixed end of the push cylinder (17) is mounted in the equipment chamber of the housing (1). The top of the piston rod of the push cylinder (17) is connected to the slide (14).

5. A micro-environmental air quality monitoring device as claimed in claim 4, wherein, The gas sample bottle includes a bottle body (18), a gate (19), and a spring plate (20). The lower part of the bottle body (18) is detachably inserted into the gas sample bottle insertion hole of the sample disc (15). A gas sample chamber is provided inside the bottle body (18). A bottle mouth matching the discharge hole of the gas pump (8) is provided at the upper end of the bottle body (18). The bottle mouth is connected to the gas sample chamber. The gate (19) is hinged and installed inside the gas sample chamber of the bottle body (18). One end of the spring plate (20) is connected to the gate (19), and the other end of the spring plate (20) is connected to the inner wall of the bottle body (18). The elasticity of the spring plate (20) causes the gate (19) to close the bottle mouth of the bottle body (18) from the inside.

6. A micro-environmental air quality monitoring device as claimed in claim 5, wherein, It also includes multiple pistons (21), and the bottom of multiple bottles (18) is provided with pressure relief holes that communicate with the gas sample chamber. The multiple pistons (21) are slidably installed in the gas sample chambers of multiple bottles (18).

7. A microenvironmental air quality monitoring device as in claim 1, wherein, It also includes a plug rod (22) and multiple support rods (23). The plug rod (22) is installed at the bottom of the box (1), and multiple support rods (23) are rotatably installed on the lower outer wall of the plug rod (22).

8. A micro-environmental air quality monitoring device as claimed in claim 7, wherein, It also includes a limiting plate (24), which is installed on the upper outer wall of the insert rod (22).

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