A vehicle-mounted low-carbon urban air quality detector

Abstract

The invention discloses a vehicle-mounted low-carbon urban air quality detector, belonging to the technical field of air quality detectors. The invention includes a body fixedly installed inside a mobile vehicle. The upper end of the body is fixedly installed with a sampling pipe, and a exhaust pipe is fixedly installed horizontally at the lower part of the body. A fixed seat is fixedly installed inside the upper part of the body, and a connecting pipe is elastically and rotatably installed through the lower part of the fixed seat, and the connecting pipe is communicated with the air inlet end of a detection module. The lower end of the sampling pipe is fixedly installed with a fan, and the exhaust end of the fan is connected with a guiding pipe through a corrugated pipe, and a pressure regulating component for realizing auxiliary air intake through elastic expansion deformation is connected between the connecting pipe and the guiding pipe. The vehicle-mounted low-carbon urban air quality detector can perform adaptively adjusted auxiliary air intake according to the vehicle driving speed, effectively ensuring the air sampling effect and improving the air quality detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of air quality detection, and particularly to a vehicle-mounted low-carbon urban air quality detector. Background Art

[0002] Traditional air quality monitoring methods mainly rely on fixed monitoring stations. However, this method has many drawbacks. The number of fixed monitoring stations is limited, making it difficult to comprehensively cover all areas of the city, resulting in limited monitoring scope, numerous monitoring dead ends and blind spots, and an inability to accurately reflect the overall air quality of the city. To make up for the deficiencies of fixed monitoring stations, vehicle-mounted low-carbon urban air quality detectors have emerged. Through the method of mobile monitoring, they can achieve efficient and accurate detection of urban air quality.

[0003] The prior art (Chinese patent with publication number: CN219038967U, publication date: May 16, 2023) discloses an air monitoring mobile vehicle, including: a box body, the box body includes a first chamber and a second chamber, a first baffle and a second baffle are arranged in the first chamber, the first baffle and the second baffle are arranged in an alternating manner, and a spoiler is arranged between the first baffle and the second baffle; during use, the telescopic rod of the device can be telescoped up and down, which not only does not affect air collection but also avoids the problem of height limitation; two baffles are arranged in the device to prevent the gas in the air inlet pipe of the box body from directly blowing on the filter screen, improving the service life of the filter screen; the metal needle of the device can increase the resistance of gas flow and at the same time disturb the air; the prior art (Chinese patent with publication number: CN221038949U, publication date: May 28, 2024) discloses an air mobile monitoring device, including a mobile vehicle, a servo motor is installed in the mobile vehicle, the output end of the servo motor is connected and fixed with an adjusting member that penetrates through the top of the mobile vehicle, one end of the adjusting member away from the servo motor is connected and fixed with a collection box, through grooves are opened on the lower side of the front and the lower side of the back of the collection box, and a collection member is slidably connected in the collection box. By making the collection time when the opening of the collection box faces the air flow direction the same as the collection time when the opening of the collection box faces away from the air flow direction, the air that enters more when the air flow directions are opposite is balanced with the air that enters less when the air flow directions are opposite, so as to make the test data more accurate.

[0004] Although the existing vehicle-mounted urban air quality detectors use the method of disturbing the air flow at the sampling port to ensure the sampling effect during use, in the actual use process, the driving speed of the vehicle will change, and the existing spoiler mechanism cannot be adjusted adaptively according to the vehicle speed, resulting in limited spoiler effect, which will continue to affect the sampling accuracy and there are certain defects in use. Summary of the Invention

[0005] The purpose of the present invention is to provide a vehicle-mounted low-carbon urban air quality detector to solve the problem raised by the above background technology that the spoiler mechanism of the vehicle-mounted low-carbon urban air quality detector on the market cannot be adaptively adjusted according to the vehicle speed, the spoiler effect is limited, which will continue to affect the sampling accuracy.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vehicle-mounted low-carbon urban air quality detector, comprising a body fixedly installed inside a traveling vehicle, a sampling tube fixedly installed on the upper end of the body, and an exhaust pipe fixedly installed laterally on the lower part of the body, and the exhaust pipe is connected to the exhaust end of a detection module installed at the lower part of the body, and the ends of the sampling tube and the exhaust pipe both pass through the vehicle body; a fixing seat is fixedly installed on the inner side of the upper part of the body, and a connecting pipe is elastically rotatably installed through the lower part of the fixing seat, and the connecting pipe is connected to the air inlet end of the detection module, a fan is fixedly installed on the lower end of the sampling tube, and the exhaust end of the fan is connected to a guide pipe through a bellows, and a pressure regulating component for auxiliary air intake through elastic expansion deformation is connected between the connecting pipe and the guide pipe, a wind drive component operated by wind-driven pressure regulating component is also installed on the body, an aperture adjustment mechanism is arranged on the top of the sampling tube, and a movable cover for adjusting the aperture adjustment mechanism is elastically lifted and lowered above the sampling tube.

[0007] Preferably, the pressure regulating assembly includes a movable plate fixedly mounted on the outer side of the upper end of the connecting tube, and a piston plate fixedly mounted on the outer side of the lower end of the guide tube, and a gas transmission colloid is fixedly connected between the movable plate and the piston plate, and the gas transmission colloid is cylindrical in structure as a whole, and the gas transmission colloid is twisted under the elastic rotation of the movable plate, and the inner walls of the middle parts of the gas transmission colloid are in contact with each other after being twisted.

[0008] Preferably, the wind drive assembly includes a fixing frame fixedly mounted on the inner side of the upper part of the body, and a driving disk is rotatably mounted on the outer side of the fixing frame, and a supporting frame is fixedly mounted on the outer side of the fixing frame, and the upper end of the supporting frame passes through the body, and a wind wheel is rotatably mounted on the upper end of the supporting frame, and the shafts of the wind wheel and the driving disk are connected by a pulley transmission.

[0009] Preferably, a connecting rod is rotatably installed on the outer side of the driving disk, and the lower end of the connecting rod is rotatably connected to a connecting frame, and guide columns are symmetrically fixedly connected between the connecting frame and the piston plate, and the guide columns slide through the upper end of the fixed seat. During the rotation of the driving disk, the piston plate is driven by the connecting rod to reciprocate and rise and fall on the inner side of the fixed seat.

[0010] Preferably, the piston plate pulls the twisted gas-transmitting colloid to drive the movable plate to rotate elastically during the upward movement, and the gas-transmitting colloid gradually returns to a cylindrical shape during the elastic rotation of the movable plate, and a first spring is fixedly connected between the piston plate and the upper inner wall of the fixed seat.

[0011] Preferably, both the connecting pipe and the guiding pipe are provided with one-way valve structures, and the air intake pressure of the guiding pipe is increased when the air delivery colloid resumes its cylindrical shape.

[0012] Preferably, the upper surface of the movable plate is uniformly fixedly connected with films, and the films rotate elastically under the extrusion of the air delivery colloid, and the air inside the air delivery colloid is stirred and mixed during the rotation of the films.

[0013] Preferably, an air delivery pipe is arranged outside the fixed seat, and two pipes are connected between the lower part of the air delivery pipe and the upper and lower parts of the fixed seat, and the two pipes are respectively located on the upper and lower sides of the piston plate. A filtering mechanism is arranged at the lower end of the air delivery pipe, and the upper end opening of the air delivery pipe faces the air intake port of the air delivery pipe. One-way valve structures are respectively arranged at the upper and lower ends of the air delivery pipe. During the twisting and unfolding of the air delivery colloid, gas is transported through the air delivery pipe.

[0014] Preferably, a regulating ring is fixedly installed below the movable cover through a bracket, and a second spring is fixedly connected between the regulating ring and the upper end of the sampling pipe. The aperture adjusting mechanism includes elastic sheet plates uniformly fixedly installed at the upper end of the sampling pipe, and an elastic membrane is fixedly connected between adjacent elastic sheet plates. The regulating ring is sleeved outside the elastic sheet plates, and one side of the elastic sheet plate close to the regulating ring is inclined. The movable cover drives the regulating ring to move downward under the action of wind force and gathers the elastic sheet plates to realize the adjustment of the air inlet aperture.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The on-vehicle low-carbon urban air quality detector can perform adaptive adjustment of auxiliary air intake according to the vehicle driving speed, effectively ensuring the air sampling effect and improving the air quality detection accuracy. The specific content is as follows;

[0016] A wind wheel, a piston plate and an air delivery colloid are provided. As the vehicle travels, the wind wheel will rotate under the action of wind force. It drives the driving disc to rotate synchronously through a belt pulley, so that the driving disc drives the piston plate to reciprocate up and down inside the fixed seat, thereby enabling the fixed seat to pull the air delivery colloid to unfold and recover, making the space inside the air delivery colloid larger, thereby assisting the air intake of the sampling pipe and ensuring the sampling effect.

[0017] Furthermore, as the air delivery colloid twists, it can squeeze out the air inside, thereby realizing the backwashing of the equipment pipeline, ensuring the cleanliness of the pipeline to guarantee the subsequent detection accuracy. During the rotation of the movable plate, the air inside the air delivery colloid can be stirred through the films to ensure the uniformity of the sample air.

[0018] 2. A fixed seat, an air delivery colloid, and an air delivery pipe are provided. As the piston plate moves upward and the air delivery colloid unfolds, the two can transport the gas inside the fixed seat to the vicinity of the sampling pipe through the air delivery pipe, thereby reducing the air flow velocity generated during vehicle driving, effectively preventing particulate matter in the air from escaping from the extraction of the sampling pipe due to inertia, and ensuring the sampling effect;

[0019] 3. A movable cover and an elastic plate are provided. As the vehicle driving speed increases, the pressure received by the movable cover gradually increases, causing the movable cover to drive the control ring to elastically move downward, and then enabling the control ring to squeeze and push multiple elastic plates to undergo elastic deformation and gather, thereby realizing the automatic adjustment of the air inlet aperture, improving the negative pressure suction at the port, and further ensuring the stability of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view structural schematic diagram of the present invention;

[0021] Figure 2 is a mounting structural schematic diagram of the sampling pipe and the fixed seat of the present invention;

[0022] Figure 3 is a front view structural schematic diagram of the fixed seat of the present invention;

[0023] Figure 4 is a mounting structural schematic diagram of the drive disk of the present invention;

[0024] Figure 5 is a sectional structural schematic diagram of the fixed seat of the present invention;

[0025] Figure 6 is a sectional structural schematic diagram of the air delivery colloid of the present invention;

[0026] Figure 7 is a connecting structural schematic diagram of the wind wheel and the drive disk of the present invention;

[0027] Figure 8 is a connecting structural schematic diagram of the sampling pipe and the movable cover of the present invention;

[0028] Figure 9 is a connecting structural schematic diagram of the control ring and the elastic plate of the present invention.

[0029] In the figure: 1. Body; 2. Sampling pipe; 3. Exhaust pipe; 4. Fan; 5. Fixed seat; 6. Connecting pipe; 7. Movable plate; 701. Film; 8. Piston plate; 9. Air delivery colloid; 10. Guide pipe; 11. Bellows; 12. Fixed bracket; 13. Support bracket; 14. Wind wheel; 15. Drive disk; 16. Guide post; 17. Connecting frame; 18. Link; 19. First spring; 20. Air delivery pipe; 21. Movable cover; 22. Control ring; 23. Second spring; 24. Elastic plate; 25. Elastic membrane. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: The existing vehicle-mounted low-carbon urban air quality detector cannot adaptively adjust the sampling mechanism according to the vehicle speed during vehicle driving, so that the sampling effect is affected by the vehicle speed and the detection accuracy is reduced. To solve this technical problem, the following technical content is disclosed in this embodiment. Please refer to Figures 1 - 7 and Figure 9 as shown; a vehicle-mounted low-carbon urban air quality detector, including a body 1 fixedly installed inside a mobile vehicle, a sampling tube 2 fixedly installed at the upper end of the body 1, and an exhaust pipe 3 horizontally and fixedly installed at the lower part of the body 1. The exhaust pipe 3 is connected to the exhaust end of a detection module installed at the lower part of the body 1. At the same time, the ends of the sampling tube 2 and the exhaust pipe 3 both penetrate the vehicle body.

[0032] A fixing base 5 is fixedly installed on the inner side of the upper part of the body 1. A connecting pipe 6 is elastically and rotatably installed through the lower part inside the fixing base 5. The connecting pipe 6 is communicated with the air inlet end of the detection module. The lower end of the sampling pipe 2 is fixedly installed with a fan 4. The exhaust end of the fan 4 is connected with a guiding pipe 10 through a corrugated pipe 11. A pressure regulating component for auxiliary air intake through elastic expansion and deformation is connected between the connecting pipe 6 and the guiding pipe 10. A wind-driven component for driving the operation of the pressure regulating component is also installed on the body 1. An aperture adjusting mechanism is arranged at the top of the sampling pipe 2. An activity cover 21 for adjusting the aperture adjusting mechanism is elastically lifted and installed above the sampling pipe 2. The pressure regulating component includes a movable plate 7 fixedly installed on the outer side of the upper end of the connecting pipe 6. A piston plate 8 is fixedly installed on the outer side of the lower end of the guiding pipe 10. An air transmission colloid 9 is fixedly connected between the movable plate 7 and the piston plate 8. The air transmission colloid 9 is integrally in a cylindrical structure. The air transmission colloid 9 is twisted under the elastic rotation of the movable plate 7. After the air transmission colloid 9 is twisted, the inner walls of the middle part thereof are in contact with each other. The wind-driven component includes a fixing frame 12 fixedly installed on the inner side of the upper part of the body 1. A driving disk 15 is rotatably installed on the outer side of the fixing frame 12. A supporting frame 13 is fixedly installed on the outer side of the fixing frame 12. The upper end of the supporting frame 13 penetrates through the vehicle body. The upper end of the supporting frame 13 is rotatably installed with a wind wheel 14. The shaft parts of the wind wheel 14 and the driving disk 15 are connected by a belt pulley drive. A connecting rod 18 is rotatably installed on the outer side of the driving disk 15. The lower end of the connecting rod 18 is rotatably connected with a connecting frame 17. Guide columns 16 are symmetrically fixedly connected between the connecting frame 17 and the piston plate 8. The guide columns 16 slide through the upper end of the fixing base 5. During the rotation of the driving disk 15, the piston plate 8 is driven to reciprocate up and down inside the fixing base 5 for adjustment.

[0033] During the upward movement of the piston plate 8, the twisted air transmission colloid 9 is pulled to drive the elastic rotation of the movable plate 7. During the elastic rotation of the movable plate 7, the air transmission colloid 9 gradually returns to a cylindrical shape. A first spring 19 is fixedly connected between the piston plate 8 and the inner wall of the upper end of the fixing base 5. Both the connecting pipe 6 and the guiding pipe 10 are provided with one-way valve structures. When the air transmission colloid 9 returns to a cylindrical shape, the air intake pressure of the guiding pipe 10 is increased. The upper surface of the movable plate 7 is uniformly fixedly connected with films 701. The films 701 are elastically rotated under the extrusion of the air transmission colloid 9. During the rotation of the films 701, the gas inside the air transmission colloid 9 is stirred and mixed.

[0034] When sampling and detecting while the vehicle is running, the blower 4 is started, so that the blower 4 draws external air through the sampling pipe 2, and conveys the air to the inside of the air delivery colloid 9 through the guiding pipe 10 and the corrugated pipe 11, and then conveys the gas to the detection module through the connecting pipe 6 for detection. The detected gas is discharged through the exhaust pipe 3. As the vehicle runs, the wind wheel 14 will rotate under the action of the air flow. The wind wheel 14 will drive the driving disc 15 to rotate synchronously through the pulley, so that the driving disc 15 pulls the connecting frame 17 to reciprocate up and down through the connecting rod 18. At this time, the connecting frame 17 will pull the piston plate 8 to reciprocate elastically up and down inside the fixed seat 5 through the guide post 16. As the piston plate 8 reciprocates up and down, it will pull the air delivery colloid 9, so that the movable plate 7 rotates elastically. At this time, the air delivery colloid 9 will gradually unfold and resume its cylindrical shape. As the space inside the air delivery colloid 9 increases, the air delivery colloid 9 will assist the sampling pipe 2 to intake air under the action of air pressure, thereby improving the sampling effect of the sampling pipe 2 at high vehicle speeds. As the movable plate 7 reciprocates and rotates, the film 701 on its upper surface will stir the air inside the air delivery colloid 9, thereby ensuring the uniformity of the particle distribution in the air and ensuring the subsequent detection accuracy. When the air delivery colloid 9 is twisted and coiled, the air inside it can be extruded to realize the backwashing of the equipment pipeline and avoid the residual particles in the pipeline from affecting the subsequent detection accuracy.

[0035] A regulating ring 22 is fixedly installed below the movable cover 21 through a bracket, and a second spring 23 is fixedly connected between the regulating ring 22 and the upper end of the sampling pipe 2. The aperture adjusting mechanism includes elastic sheet plates 24 uniformly and fixedly installed at the upper end of the sampling pipe 2, and an elastic membrane 25 is fixedly connected between adjacent elastic sheet plates 24. And the regulating ring 22 is sleeved outside the elastic sheet plates 24. At the same time, one side of the elastic sheet plate 24 close to the regulating ring 22 is inclined. The movable cover 21 drives the regulating ring 22 to move downward and gather the elastic sheet plates 24 under the action of wind force to realize the adjustment of the air inlet aperture.

[0036] As the vehicle speed increases, the conical movable cover 21 will drive the regulating ring 22 to elastically move downward at the upper end of the sampling pipe 2 under the action of wind pressure. At this time, the regulating ring 22 will slide along the outside of the elastic sheet plate 24, thereby pushing a plurality of elastic sheet plates 24 to elastically deform. The deformed elastic sheet plates 24 drive the elastic membrane 25, so that the air inlet aperture is automatically adjusted with the vehicle speed to ensure the sampling effect.

[0037] Embodiment 2: The technical content disclosed in this embodiment is a further improvement based on the above-mentioned Embodiment 1. When the existing vehicle-mounted low-carbon urban air quality detector is in use, it is inconvenient to adaptively adjust the flow disturbance near the sampling port, so that some large particles are prone to escape under the action of inertia. To further solve this technical problem, the following technical content is disclosed in this embodiment, such as Figure 5 and Figure 8As shown in the figure; an air delivery pipe 20 is arranged on the outer side of the fixed seat 5, and two pipes are connected between the lower part of the air delivery pipe 20 and the upper and lower parts of the fixed seat 5, and the two pipes are respectively located on the upper and lower sides of the piston plate 8. A filtering mechanism is arranged at the lower end of the air delivery pipe 20, and the upper end opening of the air delivery pipe 20 faces the air inlet port of the air delivery pipe 20. One-way valve structures are respectively arranged at the upper and lower ends of the air delivery pipe 20. During the twisting and unfolding process of the air delivery colloid 9, gas is transported through the air delivery pipe 20.

[0038] With the reciprocating lifting of the piston plate 8 and the reciprocating twisting and unfolding of the air delivery colloid 9 during the sampling process, the gas volume inside the fixed seat 5 can be adjusted by the piston plate 8 and the air delivery colloid 9. When the piston plate 8 moves upward and the air delivery colloid 9 unfolds, the two can blow the gas inside the fixed seat 5 through the air delivery pipe 20 towards the air inlet of the sampling pipe 2. The blowing direction of the air delivery pipe 20 is the same as the vehicle driving direction, thereby weakening the airflow generated by the vehicle driving, reducing the inertia of the particulate matter at the air inlet of the sampling pipe 2, avoiding the escape of the particulate matter from the sampling capture, ensuring the real-time and accuracy of the sampling, effectively ensuring the subsequent detection accuracy. When the piston plate 8 moves downward and the air delivery colloid 9 twists, the fixed seat 5 can perform filtering and air extraction through the lower end of the air delivery pipe 20 to ensure that the sampling port can be blown against later.

[0039] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vehicle-mounted low-carbon urban air quality detector, including a body (1) fixedly installed inside a mobile vehicle. A sampling pipe (2) is fixedly installed at the upper end of the body (1), and an exhaust pipe (3) is horizontally and fixedly installed at the lower part of the body (1). Moreover, the exhaust pipe (3) is connected to the exhaust end of a detection module installed at the lower part of the body (1). At the same time, the ends of both the sampling pipe (2) and the exhaust pipe (3) penetrate through the vehicle body; It is characterized in that A fixing seat (5) is fixedly installed inside the upper part of the body (1). An adapter pipe (6) is elastically and rotatably installed through the lower part of the fixing seat (5). Moreover, the adapter pipe (6) is communicated with the intake end of the detection module. A blower (4) is fixedly installed at the lower end of the sampling pipe (2). The exhaust end of the blower (4) is connected to a guiding pipe (10) through a corrugated pipe (11). A pressure regulating component for auxiliary air intake through elastic expansion and deformation is connected between the adapter pipe (6) and the guiding pipe (10). A wind-driven component for driving the operation of the pressure regulating component is also installed on the body (1). An aperture adjusting mechanism is arranged at the top of the sampling pipe (2). An activity cover (21) for adjusting the aperture adjusting mechanism is elastically lifted and installed above the sampling pipe (2). The pressure regulating component includes a movable plate (7) fixedly installed on the outer side of the upper end of the adapter pipe (6). A piston plate (8) is fixedly installed on the outer side of the lower end of the guiding pipe (10). A gas transmission colloid (9) is fixedly connected between the movable plate (7) and the piston plate (8). At the same time, the gas transmission colloid (9) is integrally in a cylindrical structure. Moreover, the gas transmission colloid (9) is twisted under the elastic rotation of the movable plate (7). After the gas transmission colloid (9) is twisted, the inner walls of its middle part are in contact with each other. A regulating ring (22) is fixedly installed under the activity cover (21) through a bracket. A second spring (23) is fixedly connected between the regulating ring (22) and the upper end of the sampling pipe (2). The aperture adjusting mechanism includes elastic sheet plates (24) uniformly fixedly installed at the upper end of the sampling pipe (2). An elastic membrane (25) is fixedly connected between adjacent elastic sheet plates (24). Moreover, the regulating ring (22) is sleeved on the outer side of the elastic sheet plates (24). At the same time, the side of the elastic sheet plate (24) close to the regulating ring (22) is inclined. The activity cover (21) drives the regulating ring (22) to move downward and gather the elastic sheet plates (24) under the action of wind force, realizing the adjustment of the air inlet aperture.

2. The on-vehicle low-carbon urban air quality detector according to claim 1, characterized in that: The wind-driven component includes a fixing frame (12) fixedly installed inside the upper part of the body (1). A driving disc (15) is rotatably installed on the outer side of the fixing frame (12). A support frame (13) is fixedly installed on the outer side of the fixing frame (12). At the same time, the upper end of the support frame (13) penetrates through the vehicle body. Moreover, a wind wheel (14) is rotatably installed at the upper end of the support frame (13). The shaft parts of the wind wheel (14) and the driving disc (15) are connected by belt pulley transmission.

3. The on-vehicle low-carbon urban air quality detector according to claim 2, characterized in that: A connecting rod (18) is rotatably mounted on the outer side of the driving disk (15), and the lower end of the connecting rod (18) is rotatably connected to a connecting frame (17). Guide columns (16) are symmetrically and fixedly connected between the connecting frame (17) and the piston plate (8). At the same time, the guide columns (16) slidably penetrate through the upper end of the fixed seat (5). During the rotation of the driving disk (15), the piston plate (8) is driven to reciprocate up and down inside the fixed seat (5) through the connecting rod (18).

4. The on-vehicle low-carbon urban air quality detector according to claim 3, characterized in that: During the upward movement of the piston plate (8), the coiled air delivery colloid (9) is pulled to drive the movable plate (7) to elastically rotate. During the elastic rotation of the movable plate (7), the air delivery colloid (9) gradually returns to a cylindrical shape. A first spring (19) is fixedly connected between the piston plate (8) and the inner wall of the upper end of the fixed seat (5).

5. The on-vehicle low-carbon urban air quality detector according to claim 4, characterized in that: Both the connecting pipe (6) and the guiding pipe (10) are provided with one-way valve structures, and when the air delivery colloid (9) returns to a cylindrical shape, the intake pressure of the guiding pipe (10) is increased.

6. The on-vehicle low-carbon urban air quality detector according to claim 1, characterized in that: The upper surface of the movable plate (7) is uniformly fixedly connected with films (701). The films (701) elastically rotate under the extrusion of the air delivery colloid (9). During the rotation of the films (701), the gas inside the air delivery colloid (9) is stirred and mixed evenly.

7. The on-vehicle low-carbon urban air quality detector according to claim 1, characterized in that: An air delivery pipe (20) is arranged on the outer side of the fixed seat (5). Two pipes are connected between the lower part of the air delivery pipe (20) and the upper and lower parts of the fixed seat (5). The two pipes are respectively located on the upper and lower sides of the piston plate (8). A filtering mechanism is arranged at the lower end of the air delivery pipe (20). The upper end opening of the air delivery pipe (20) faces the intake port of the air delivery pipe (20). One-way valve structures are respectively arranged at the upper and lower ends of the air delivery pipe (20). During the coiling and unfolding of the air delivery colloid (9), gas is transported through the air delivery pipe (20).

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