Vehicle-mounted low-carbon urban air quality detector

Abstract

The invention discloses a vehicle-mounted low-carbon urban air quality detector, and belongs to the technical field of air quality detectors, the vehicle-mounted low-carbon urban air quality detector comprises a machine body fixedly mounted in a travelling car, a sampling pipe is fixedly mounted at the upper end of the machine body, and an exhaust pipe is transversely and fixedly mounted at the lower part of the machine body; a fixed seat is fixedly mounted on the inner side of the upper part of the machine body, a connecting pipe is elastically and rotatably mounted below the interior of the fixed seat in a penetrating manner, the connecting pipe is communicated with the air inlet end of a detection module, a fan is fixedly mounted at the lower end of a sampling pipe, and the exhaust end of the fan is connected with a guide pipe through a corrugated pipe; and a pressure regulating assembly for realizing auxiliary air inlet through elastic expansion deformation is connected between the connecting pipe and the guide pipe. According to the vehicle-mounted low-carbon city air quality detector, self-adaptive adjustment auxiliary air intake can be carried out according to the vehicle running speed, the air sampling effect is effectively ensured, and the air quality detection precision is improved.

Description

Technical Field

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

[0002] The traditional air quality monitoring method is mainly 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, with a large number of monitoring dead corners and blind spots, and being unable to accurately reflect the overall air quality of the city. To make up for the deficiencies of fixed monitoring stations, the in-vehicle low-carbon urban air quality detector came into being. It realizes the efficient and accurate detection of urban air quality through the method of mobile monitoring.

[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 alternately, 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 neither affects the air collection nor causes problems with height limits; 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 the top of the mobile vehicle, the end of the adjusting member away from the servo motor is connected and fixed with a collection box, through slots 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, and using the air that enters more when the air flow directions are opposite and the air that enters less when the air flow directions are the same to balance, the test data is made more accurate.

[0004] Although the existing in-vehicle urban air quality detector uses a spoiler method to disturb the air flow at the sampling port during use to ensure the sampling effect, during the actual use process, the driving speed of the vehicle will vary, 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 usage defects. Summary of the Invention

[0005] The object of the present invention is to provide a vehicle-mounted low-carbon urban air quality detector to solve the problem in the above-mentioned background technology that the spoiler mechanism of the current 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, and thus the sampling accuracy will continue to be affected.

[0006] To achieve the above object, the present invention provides the following technical solution: A vehicle-mounted low-carbon urban air quality detector, including a body fixedly installed inside a traveling vehicle, a sampling pipe is fixedly installed at the upper end of the body, and an exhaust pipe is horizontally fixedly installed at 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. At the same time, the ends of the sampling pipe and the exhaust pipe both penetrate the vehicle 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 intake end of the detection module. The lower end of the sampling pipe is fixedly installed with a fan, and the exhaust end of the fan is connected to a guiding pipe through a corrugated pipe, and a pressure regulating component for auxiliary intake through elastic expansion and deformation is connected between the connecting pipe and the guiding pipe. A wind driving component for driving the operation of the pressure regulating component by wind force is also installed on the body. An aperture adjusting mechanism is arranged at the top of the exhaust pipe, and a movable cover for adjusting the aperture adjusting mechanism is elastically lifted above the exhaust pipe.

[0007] Preferably, the pressure regulating component includes a movable plate fixedly installed on the outer side of the upper end of the connecting pipe, a piston plate is fixedly installed on the outer side of the lower end of the guiding pipe, and an air delivery colloid is fixedly connected between the movable plate and the piston plate. At the same time, the air delivery colloid is integrally in a cylindrical structure, and the air delivery colloid is twisted under the elastic rotation of the movable plate, and the inner walls of the middle part of the air delivery colloid are attached to each other after being twisted.

[0008] Preferably, the wind driving component includes a fixed frame fixedly installed inside the upper part of the body, a driving disk is rotatably installed on the outer side of the fixed frame, a support frame is fixedly installed on the outer side of the fixed frame, and the upper end of the support frame penetrates the vehicle body. At the same time, a wind wheel is rotatably installed at the upper end of the support frame, and the shaft parts of the wind wheel and the driving disk are connected by a belt pulley transmission.

[0009] Preferably, a connecting rod is rotatably installed on the outer side of the driving disk, 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. At the same time, the guide columns slide through the upper end of the fixed seat, and the piston plate is driven to reciprocate up and down inside the fixed seat through the connecting rod during the rotation of the driving disk.

[0010] Preferably, when the piston plate moves upward, it pulls the twisted air delivery colloid to drive the movable plate to elastically rotate. During the elastic rotation of the movable plate, the air delivery colloid gradually returns to a cylindrical shape, and a first spring is fixedly connected between the piston plate and the inner wall of the upper end 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 intake 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; 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, and it will drive 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.

[0016] 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, and guaranteeing 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.

[0017] 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 speed generated by the vehicle driving, effectively avoiding the escape of particulate matter in the air from being extracted by the sampling pipe under the action of inertia, and ensuring the sampling effect. 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 regulating ring to elastically move downward, and further causing the regulating ring to squeeze and push a plurality of elastic plates to undergo elastic deformation and gather, thereby realizing the automatic adjustment of the air inlet aperture, improving the negative pressure suction of the port, and further ensuring the stability of sampling. Description of the Drawings

[0018] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is an installation structural schematic diagram of the sampling pipe and the fixed seat of the present invention; Figure 3 It is a front view structural schematic diagram of the fixed seat of the present invention; Figure 4 It is an installation structural schematic diagram of the driving disk of the present invention; Figure 5 It is a sectional structural schematic diagram of the fixed seat of the present invention; Figure 6 It is a sectional structural schematic diagram of the air delivery colloid of the present invention; Figure 7 It is a connection structural schematic diagram of the wind wheel and the driving disk of the present invention; Figure 8 It is a connection structural schematic diagram of the sampling pipe and the movable cover of the present invention; Figure 9 It is a connection structural schematic diagram of the regulating ring and the elastic plate of the present invention.

[0019] 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 frame; 13. Support frame; 14. Wind wheel; 15. Driving disk; 16. Guide post; 17. Connecting frame; 18. Link; 19. First spring; 20. Air delivery pipe; 21. Movable cover; 22. Regulating ring; 23. Second spring; 24. Elastic plate; 25. Elastic membrane. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. 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.

[0021] 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, resulting in the sampling effect being affected by the vehicle speed and reducing the detection accuracy. 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 includes 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. 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 pipe 2 and the exhaust pipe 3 penetrate through the vehicle body.

[0022] A fixing base 5 is fixedly installed on the inner side of the upper part of the body 1, and a connecting pipe 6 is elastically and rotatably installed through the lower part inside the fixing base 5, and 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, and 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 driving component for driving the operation of the pressure regulating component is also installed on the body 1. An aperture regulating mechanism is arranged at the top of the exhaust pipe 3, and a movable cover 21 for adjusting the aperture regulating mechanism is elastically lifted above the exhaust pipe 3. The pressure regulating component includes a movable plate 7 fixedly installed on the outer side of the upper end of the connecting pipe 6, and 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, and the gas transmission colloid 9 is twisted under the elastic rotation of the movable plate 7, and the inner walls of the middle part of the gas transmission colloid 9 are attached to each other after being twisted. The wind driving component includes a fixing frame 12 fixedly installed on the inner side of the upper part of the body 1, and 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, and 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 a belt pulley drive. A connecting rod 18 is rotatably installed on the outer side of the driving disc 15, and 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. At the same time, the guide columns 16 slidably penetrate through the upper end of the fixing base 5. During the rotation of the driving disc 15, the piston plate 8 is driven to reciprocate up and down inside the fixing base 5 for adjustment.

[0023] During the upward movement of the piston plate 8, the twisted gas 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 gas 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, and when the gas transmission colloid 9 returns to a cylindrical shape, the intake pressure of the guiding pipe 10 is increased. The upper surface of the movable plate 7 is uniformly fixedly connected with films 701, and the films 701 are elastically rotated under the extrusion of the gas transmission colloid 9. During the rotation of the films 701, the gas inside the gas transmission colloid 9 is stirred and mixed.

[0024] 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 and elastically lift and adjust 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 return to a 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, so as to ensure the uniformity of the particle distribution in the air and ensure the subsequent detection accuracy. When the air delivery colloid 9 is twisted and rolled, 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.

[0025] A regulation ring 22 is fixedly installed below the movable cover 21 through a bracket, and a second spring 23 is fixedly connected between the regulation ring 22 and the upper end of the sampling pipe 2. The aperture adjustment 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 regulation ring 22 is sleeved outside the elastic sheet plates 24. At the same time, the side of the elastic sheet plate 24 close to the regulation ring 22 is inclined. The movable cover 21 drives the regulation 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.

[0026] As the vehicle speed increases, the conical movable cover 21 will drive the regulation 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 regulation 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.

[0027] Embodiment 2: The technical content disclosed in this embodiment is a further improvement based on Embodiment 1 above. 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 likely to escape under the action of inertia. In order 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.

[0028] 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 amount of gas 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, preventing the particulate matter from escaping the sampling capture, ensuring the real-time nature 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 filtered air extraction through the lower end of the air delivery pipe 20 to ensure that the sampling port can be blown against later.

[0029] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0030] 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, comprising a body (1) fixedly mounted inside a traveling vehicle, a sampling tube (2) fixedly mounted on the upper end of the body (1), an exhaust pipe (3) fixedly mounted laterally on the lower portion of the body (1), and the exhaust pipe (3) connected to the exhaust end of a detection module mounted on the lower portion of the body (1), and ends of the sampling tube (2) and the exhaust pipe (3) both pass through the vehicle body; It is characterized in that A fixing seat (5) is fixedly mounted on the inner side of the upper part of the machine body (1), and a connecting pipe (6) is elastically rotatably mounted through the lower part of the fixing seat (5), and the connecting pipe (6) is connected to the air inlet end of the detection module. A fan (4) is fixedly mounted on the lower end of the sampling tube (2), and the exhaust end of the fan (4) is connected to a guide pipe (10) via a bellows (11), and a pressure regulating component for assisting air intake by elastic expansion deformation is connected between the connecting pipe (6) and the guide pipe (10). A wind drive component operated by driving the pressure regulating component with wind power is also mounted on the machine body (1), and an aperture adjustment mechanism is arranged on the top of the exhaust pipe (3), and a movable cover (21) for adjusting the aperture adjustment mechanism is elastically mounted on the upper part of the exhaust pipe (3).

2. The on-vehicle low-carbon urban air quality detector according to claim 1, wherein: The pressure regulating assembly comprises a movable plate (7) fixedly mounted on the outer side of the upper end of the connecting pipe (6), and a piston plate (8) fixedly mounted on the outer side of the lower end of the guide pipe (10), and a gas transmission colloid (9) is fixedly connected between the movable plate (7) and the piston plate (8), and the gas transmission colloid (9) is in a cylindrical structure as a whole, and the gas transmission colloid (9) is twisted under the elastic rotation of the movable plate (7), and the inner walls of the middle parts of the gas transmission colloid (9) are in contact with each other after being twisted.

3. The on-vehicle low-carbon urban air quality detector according to claim 1, wherein: The wind drive assembly comprises a fixing frame (12) fixedly mounted on the inner side of the upper part of the body (1), a driving disk (15) being rotatably mounted on the outer side of the fixing frame (12), and a supporting frame (13) being fixedly mounted on the outer side of the fixing frame (12), the upper end of the supporting frame (13) penetrating the vehicle body, and a wind wheel (14) being rotatably mounted on the upper end of the supporting frame (13), and the shafts of the wind wheel (14) and the driving disk (15) being connected via a belt pulley transmission.

4. The on-vehicle low-carbon urban air quality detector according to claim 3, wherein: 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), and a guide column (16) is symmetrically fixedly connected between the connecting frame (17) and the piston plate (8), and the guide column (16) slides through the upper end of the fixed seat (5). During the rotation of the driving disk (15), the piston plate (8) is driven by the connecting rod (18) to reciprocate and rise and fall on the inner side of the fixed seat (5).

5. The on-vehicle low-carbon urban air quality detector according to claim 4, characterized in that: During the upward movement of the piston plate (8), the twisted gas transmission colloid (9) is pulled to drive the movable plate (7) to rotate elastically, and during the elastic rotation of the movable plate (7), the gas transmission colloid (9) gradually returns to a cylindrical shape, and 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).

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

7. The on-vehicle low-carbon urban air quality detector according to claim 2, characterized in that: The upper surface of the movable plate (7) is evenly and fixedly connected with a film (701), and the film (701) elastically rotates under the extrusion of the gas transmission colloid (9), and the gas inside the gas transmission colloid (9) is stirred and mixed during the rotation of the film (701).

8. The on-vehicle low-carbon urban air quality detector according to claim 2, characterized in that: An air delivery pipe (20) is arranged outside the fixing seat (5), and two pipelines are connected between the lower part of the air delivery pipe (20) and the upper and lower parts of the fixing seat (5), and the two pipelines 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 of the air delivery pipe (20) opens toward the air inlet port of the air delivery pipe (20), and one-way valve structures are respectively arranged at the upper and lower ends of the air delivery pipe (20), and gas is delivered through the air delivery pipe (20) during the twisting and stretching process of the air delivery colloid (9).

9. The on-vehicle low-carbon urban air quality detector according to claim 1, characterized in that: A regulating ring (22) is fixedly mounted below the movable cover (21) via a bracket, and a second spring (23) is fixedly connected between the regulating ring (22) and the upper end of the sampling tube (2). The aperture adjustment mechanism comprises elastic plates (24) evenly fixedly mounted on the upper end of the sampling tube (2), and elastic membranes (25) are fixedly connected between adjacent elastic plates (24). The regulating ring (22) is sleeved on the outer side of the elastic plates (24), and a side of the elastic plates (24) close to the regulating ring (22) is inclined. Under the action of wind force, the movable cover (21) drives the regulating ring (22) to move downward and gather the elastic plates (24) to achieve air inlet aperture adjustment.

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