An atmospheric particulate matter automatic early warning device for air pollution concentration monitoring

Abstract

The application discloses an air particulate matter automatic early warning device for air pollution concentration monitoring, and belongs to the technical field of air pollution concentration monitoring, which comprises a triangular support, an air inlet assembly, an automatic reminding feedback structure and a self-adaptive cleaning mechanism. The application is based on the double-filtering structure of the first filter screen and the second filter screen, and combines the design that the mesh size, shape and position of the two filter screens are completely consistent, so that the filtering precision and the filtering channel area can be flexibly regulated. The staff can disassemble the friction locking block, manually rotate the second filter screen to change the mesh alignment degree of the second filter screen and the first filter screen, and then reduce the filtering channel area formed by the two filter screens, so that the device can not only realize basic particulate matter interception and filtration, but also can adapt to the screening and monitoring of particulate matters with different particle sizes according to the monitoring requirements, and the scene adaptability and functional expansibility of the device are greatly improved. Meanwhile, the detachable design of the friction locking block makes the filtering precision adjustment operation convenient, and reduces the operation and maintenance difficulty of the staff.

Description

Technical Field

[0001] This invention belongs to the field of air pollution concentration monitoring technology, specifically referring to an automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration. Background Technology

[0002] With the acceleration of industrialization and urbanization, atmospheric particulate matter pollution has become a key environmental issue affecting air quality and human health. Accurate monitoring of atmospheric particulate matter concentrations and timely early warning of pollution risks are of great significance for environmental governance and public health protection. Currently, atmospheric particulate matter monitoring devices are widely used in the field of environmental monitoring. Their core relies on air intake components to efficiently collect air samples and filter particulate matter, providing a basis for subsequent concentration detection.

[0003] However, the air intake components of existing monitoring devices generally have many shortcomings: First, the air intake direction is fixed and cannot adapt to changes in wind direction. Poor wind angle can easily lead to low airflow reception efficiency, affecting the continuity and accuracy of monitoring data. Second, the filtration structure is simple and the filtration accuracy is fixed, making it difficult to adapt to the monitoring needs of particles of different sizes, resulting in poor scenario adaptability. Third, after long-term use, the filter screen is prone to dust accumulation and blockage, which increases air intake resistance and affects the normal operation of the device. However, existing devices lack an automatic reminder mechanism for filter screen dust accumulation, requiring regular manual inspection and troubleshooting. This not only increases labor costs but may also lead to monitoring interruption or data distortion due to untimely inspections. Fourth, filter screen cleaning relies on manual operation and lacks adaptive cleaning function, further reducing the device's operation and maintenance efficiency and continuous operation capability.

[0004] Furthermore, some devices have complex power transmission structures, relying heavily on external drive components to achieve functions such as filtration and alerts. This not only results in high energy consumption but also leads to numerous potential failure points and poor stability. Therefore, developing an automatic atmospheric particulate matter early warning device with adaptive wind direction adjustment, multi-precision filtration adaptation, automatic filter dust accumulation alerts, and adaptive cleaning functions has become a key requirement for addressing the pain points of existing technologies and improving monitoring efficiency and reliability. Summary of the Invention

[0005] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides an automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration, which effectively solves the problems currently on the market.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes an automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration, including a triangular bracket, an air intake component, an automatic reminder feedback structure, and an adaptive cleaning mechanism; the triangular bracket is located below the air intake pipe and is used to support the placement of the air intake pipe; the air intake component is drivenly connected to the automatic reminder feedback structure, and the air intake component is fixedly connected to the adaptive cleaning mechanism.

[0007] Furthermore, the air intake assembly includes an air intake duct, a wind vane, a protective cover, a fixed outer cover, a first filter, a return spring, a drive shaft, a turbofan, a drive bevel gear, a second filter, a friction locking block, a fixed bracket, a limit block, and a telescopic spring; the wind vane is fixedly connected to the upper surface of the air intake duct; the protective cover is symmetrically and fixedly installed on the outer surface of the air intake duct; the fixed outer cover is detachably connected to the protective cover; the first filter is slidably connected to the inner surface of the air intake duct; the return spring is located between the first filter and the protective cover, with one end fixedly connected to the first filter and the other end fixedly connected to the protective cover; the drive shaft, turbofan, drive bevel gear, second filter, friction locking block, fixed bracket, limit block, and telescopic spring; the wind vane is fixedly connected to the upper surface of the air intake duct; the protective cover is symmetrically and fixedly installed on the outer surface of the air intake duct; the fixed outer cover is detachably connected to the protective cover; the first filter is slidably connected to the inner surface of the air intake duct; the return spring is located between the first filter and the protective cover, with one end fixedly connected to the first filter and the other end fixedly connected to the protective cover; the drive shaft, turbofan, drive bevel gear ... One end of the drive shaft passes through and is rotatably connected to the first filter screen; the turbofan is fixedly connected to one end of the drive shaft; the drive bevel gear is fixedly connected to the end of the drive shaft away from the first filter screen; the second filter screen is rotatably connected to the first filter screen; the friction locking block passes through and is detachably connected to the intake pipe, and the bottom surface of the friction locking block abuts against the outer surface of the second filter screen; the fixed bracket is fixedly connected to the outer surface of the intake pipe; the limiting block passes through and is slidably connected to the fixed bracket and the intake pipe; the telescopic spring is located between the limiting block and the fixed bracket, with one end fixedly connected to the limiting block and the other end fixedly connected to the fixed bracket.

[0008] Furthermore, the mesh openings on the first filter screen are the same in size, shape, and position as those on the second filter screen, and the end of the limiting block near the intake pipe is wedge-shaped.

[0009] Furthermore, the automatic reminder feedback structure includes a driven bevel gear, a rotating shaft, a placement box, a cam, a reciprocating plate, a support spring, a load-bearing block, and a striking block; the driven bevel gear meshes with the driving bevel gear; the rotating shaft is fixedly connected to the driven bevel gear, and the rotating shaft passes through and rotatably connects to the intake pipe; the placement box is fixedly connected to the bottom surface of the intake pipe; the cam is fixedly connected to the end of the rotating shaft away from the driven bevel gear; the reciprocating plate is slidably connected inside the placement box; the support spring is disposed between the placement box and the reciprocating plate, with one end fixedly connected to the placement box and the other end fixedly connected to the reciprocating plate; the load-bearing block is fixedly connected to the driven bevel gear; the striking block is fixedly connected to the reciprocating plate, and the striking block passes through and slidably connects to the placement box.

[0010] Furthermore, both the striking block and the bearing block are made of metal.

[0011] Furthermore, the adaptive cleaning mechanism includes a drive rack, a support shaft, a first torsion spring, a first ratchet, a second ratchet, a sliding rack, an intermittent rack, a driven gear, a connecting shaft, a striking block, and a second torsion spring; one end of the drive rack is fixedly connected to the first filter; the support shaft is rotatably connected to the air intake pipe; the first torsion spring is sleeved on the support shaft, with one end fixedly connected to the support shaft and the other end fixedly connected to the air intake pipe; the first ratchet is located on the support shaft; the second ratchet is located on one side of the first ratchet and is also located on the support shaft; the sliding rack is located below the second ratchet; the intermittent rack is fixedly connected to the bottom surface of the sliding rack; the driven gear is located below the intermittent rack; the connecting shaft is fixedly connected to the driven gear, and the connecting shaft passes through and rotatably connects to the air intake pipe; the striking block is fixedly connected to the connecting shaft; the second torsion spring is sleeved on the connecting shaft, with one end fixedly connected to the inner surface of the air intake pipe and the other end fixedly connected to the connecting shaft.

[0012] Furthermore, the first ratchet and the second ratchet are mirror images of each other.

[0013] Furthermore, both the outer surfaces of the first ratchet outer ring and the second ratchet outer ring are provided with toothed structures, and the first ratchet is engaged with the drive rack through the toothed structure, while the second ratchet is engaged with the sliding rack through the toothed structure.

[0014] Furthermore, the toothed structure on the bottom surface of the intermittent rack is intermittently distributed, and the intermittent rack meshes with the driven gear.

[0015] Furthermore, the intermittent rack and driven gear both pass through and are slidably connected to the fixed outer cover.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows:

[0017] (1) The device achieves automatic adaptation and adjustment of the air intake direction through the fixed connection structure between the wind vane and the air intake pipe. It can ensure that the air intake pipe is always at the optimal windward angle without manual intervention, effectively avoiding air intake interruption or airflow fluctuation caused by wind direction changes. This not only improves the airflow receiving efficiency, but also ensures the continuity and data accuracy of subsequent particulate matter monitoring.

[0018] (2) Based on the dual filtration architecture of the first and second filters, and combined with the design that the mesh size, shape and position of the two filters are completely consistent, the filtration accuracy and filtration channel area can be flexibly adjusted. The operator can manually rotate the second filter to change the degree of mesh alignment with the first filter by disassembling the friction locking block, thereby reducing the filtration channel area jointly constructed by the two. This allows the device to not only achieve basic particulate matter interception and filtration, but also to adapt to the screening and monitoring of particles of different sizes according to monitoring needs, greatly improving the device's scene adaptability and functional expandability. At the same time, the detachable design of the friction locking block makes the operation of filtration accuracy adjustment convenient and reduces the maintenance difficulty for the operator.

[0019] (3) The adaptive cleaning mechanism uses filter displacement to trigger transmission, enabling automatic tapping cleaning of the first filter by the tapping block. This eliminates the need for manual disassembly and cleaning, effectively reducing manual maintenance costs. The mechanism employs a mirror-mounted double ratchet and rack transmission, combined with the torsion spring's energy storage and reset function, to achieve intermittent cleaning operation: it utilizes impact force to ensure effective dust removal while avoiding damage to the filter due to over-cleaning. Furthermore, the combination of the limit block and the telescopic spring allows for temporary fixation of the dust filter, ensuring stable implementation of the cleaning action; after cleaning, each transmission component can be reset to its initial state via spring energy storage, ensuring subsequent normal operation of the device and further enhancing its continuous working capability. Attached Figure Description

[0020] Figure 1 This invention provides a three-dimensional automatic early warning device for monitoring atmospheric particulate matter concentration for air pollution. Figure 1 ;

[0021] Figure 2 This invention provides a three-dimensional automatic early warning device for monitoring atmospheric particulate matter concentration for air pollution. Figure 2 ;

[0022] Figure 3 This is a partially exploded view of an automatic early warning device for monitoring air pollution concentration, as proposed in this invention.

[0023] Figure 4 Cross-section of the intake assembly Figure 1 ;

[0024] Figure 5 Cross-section of the intake assembly Figure 2 ;

[0025] Figure 6 This is a partial structural diagram of the intake assembly;

[0026] Figure 7 for Figure 4 Enlarged view of the structure at point A in the middle;

[0027] Figure 8 This is a partial structural diagram of the adaptive cleaning mechanism;

[0028] Figure 9 This is an exploded view of part of the adaptive cleaning mechanism.

[0029] Among them, 1. Triangular bracket; 2. Air intake assembly; 201. Air intake pipe; 202. Wind vane; 203. Protective cover; 204. Fixed outer cover; 205. First filter screen; 206. Return spring; 207. Drive shaft; 208. Turbine fan; 209. Drive bevel gear; 210. Second filter screen; 211. Friction locking block; 212. Fixed bracket; 213. Limiting block; 214. Telescopic spring; 3. Automatic reminder feedback structure; 301. Driven bevel gear; 302. 303. Rotating shaft; 304. Placement box; 305. Cam; 306. Reciprocating plate; 307. Support spring; 308. Bearing block; 4. Adaptive cleaning mechanism; 401. Drive rack; 402. Support shaft; 403. First torsion spring; 404. First ratchet; 405. Second ratchet; 406. Sliding rack; 407. Intermittent rack; 408. Driven gear; 409. Connecting shaft; 410. Striking block; 411. Second torsion spring.

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] like Figures 1-9 As shown.

[0034] In some embodiments, the air intake assembly 2 may include an air intake duct 201 for receiving airflow; a wind vane 202, fixedly connected to the upper surface of the air intake duct 201 for controlling the automatic adjustment of the air intake duct 201's orientation; a protective cover 203, symmetrically and fixedly disposed on the outer surface of the air intake duct 201 for protecting components; a fixed outer cover 204, detachably connected to the protective cover 203; a first filter 205, slidably connected to the inner surface of the air intake duct 201 for filtering particulate matter in the air; a return spring 206, disposed between the first filter 205 and the protective cover 203, with one end fixedly connected to the first filter 205 and the other end fixedly connected to the protective cover 203; a drive shaft 207, one end of which passes through and is rotatably connected to the first filter 205; and a turbofan 208. A drive bevel gear 209 is fixedly connected to one end of the drive shaft 207 away from the first filter screen 205; a second filter screen 210 is rotatably connected to the first filter screen 205; a friction locking block 211 is detachably connected to the intake pipe 201, and the bottom surface of the friction locking block 211 abuts against the outer surface of the second filter screen 210; a fixed bracket 212 is fixedly connected to the outer surface of the intake pipe 201; a limiting block 213 is slidably connected to the fixed bracket 212 and the intake pipe 201, used to limit the position of the first filter screen 205; and a telescopic spring 214 is disposed between the limiting block 213 and the fixed bracket 212, with one end fixedly connected to the limiting block 213 and the other end fixedly connected to the fixed bracket 212.

[0035] The mesh openings on the first filter screen 205 are the same in size, shape and position as those on the second filter screen 210. The end of the limiting block 213 near the intake pipe 201 is wedge-shaped.

[0036] The wind vane 202 is fixed to the upper surface of the air intake duct 201 and can automatically adjust its attitude according to the external wind direction, thereby driving the air intake duct 201 to adjust its orientation synchronously, ensuring that the air intake duct 201 is always at the optimal windward angle and improving airflow reception efficiency. After the external airflow enters the air intake duct 201, it first passes through the first filter 205, which is slidably connected to the inner surface of the duct. The first filter 205 performs preliminary filtration of particulate matter in the air. The airflow impacts the turbofan 208, driving the turbofan 208 to rotate. The turbofan 208 transmits torque to the drive bevel gear 209 through the drive shaft 207, providing the power basis for subsequent transmission. The airflow filtered by the first filter 205 flows through the second filter 210, which is rotatably connected to the first filter 205. The friction locking block 211 is removed, and then the second filter 210 is manually rotated to reduce the channel area formed by the second filter 210 and the first filter 205. After the second filter 210 is adjusted, its angle is fixed again by the friction locking block 211, so that the device can monitor different particles. When the amount of dust accumulated on the outer surface of the first filter 205 increases, the thrust provided by the wind on the first filter 205 increases. At this time, the first filter 205 will overcome the return spring 206 and move. When the first filter 205 moves to the position of the limiting block 213, the limiting block 213 enters the groove on the first filter 205 under the action of the telescopic spring 214, so that the position of the first filter 205 is temporarily fixed.

[0037] In this embodiment, the fixed connection structure between the wind vane 202 and the air intake pipe 201 enables automatic adaptation and adjustment of the air intake direction. The wind vane 202 can adjust its attitude in real time according to the external wind direction and drive the air intake pipe 201 to deflect synchronously, ensuring that the air intake pipe 201 is always at the optimal windward angle. It can continuously and efficiently receive airflow without manual intervention, which not only improves the airflow reception efficiency, but also avoids air intake interruption or airflow fluctuation caused by changes in wind direction, ensuring a stable air supply for subsequent equipment.

[0038] Based on the dual filtration architecture of the first filter 205 and the second filter 210, and combined with the design that the mesh size, shape and position of the two filters are completely consistent, the filtration accuracy and filtration channel area can be flexibly adjusted. The operator can remove the friction locking block 211 and manually rotate the second filter 210 to change its mesh alignment with the first filter 205, thereby reducing the filtration channel area jointly constructed by the two. This allows the component to not only achieve basic particulate matter interception and filtration, but also to adapt to the screening and monitoring of particles of different sizes according to monitoring needs, greatly improving the component's scenario adaptability and functional expandability.

[0039] In some embodiments, the automatic reminder feedback structure 3 may include a driven bevel gear 301 meshing with a driving bevel gear 209; a rotating shaft 302 fixedly connected to the driven bevel gear 301, the rotating shaft 302 passing through and rotatably connected to the air intake pipe 201; a placement box 303 fixedly connected to the bottom surface of the air intake pipe 201; a cam 304 fixedly connected to one end of the rotating shaft 302 away from the driven bevel gear 301; a reciprocating plate 305 slidably connected inside the placement box 303; a support spring 306 disposed between the placement box 303 and the reciprocating plate 305, one end fixedly connected to the placement box 303 and the other end fixedly connected to the reciprocating plate 305; a bearing block 307 fixedly connected to the driven bevel gear 301; and a striking block 308 fixedly connected to the reciprocating plate 305, the striking block 308 passing through and slidably connected to the placement box 303, for reciprocatingly striking the bearing block 307.

[0040] Both the striking block 308 and the bearing block 307 can be made of one of a variety of metal materials such as iron and stainless steel, but are not specifically limited to one type.

[0041] The automatic reminder feedback structure 3 achieves seamless power connection through the meshing of the driven bevel gear 301 with the original drive bevel gear 209 of the intake assembly 2. When the airflow impacts the turbofan 208 and drives the transmission shaft 207 to rotate, the drive bevel gear 209 rotates synchronously, thereby driving the meshing driven bevel gear 301 to rotate, transmitting power to the core transmission component of the automatic reminder feedback structure 3. The rotation of the driven bevel gear 301 is transmitted to the cam 304 through the fixedly connected rotating shaft 302. When the cam 304 rotates with the rotating shaft 302, its eccentric structure continuously presses the reciprocating plate 305 slidably connected inside the placement box 303, causing the reciprocating plate 305 to overcome the elastic force of the support spring 306 and slide downward along the inner wall of the placement box 303. When the eccentric end of the cam 304 rotates away from the reciprocating plate 305, the elastic force of the support spring 306 pushes the reciprocating plate 305 to return to its original position, thereby realizing the periodic up-and-down reciprocating motion of the reciprocating plate 305.

[0042] The bearing block 307 is fixed to the driven bevel gear 301 and rotates synchronously with the driven bevel gear 301; the striking block 308 is fixed to the reciprocating plate 305, passes through the placement box 303 and can slide along the placement box 303. When the dust accumulation on the first filter 205 is small, its displacement is small, the air intake resistance is normal, and the airflow impacts the turbine fan 208 at a stable speed. The position of the first filter 205 will not move or will only shift slightly. The drive bevel gear 209 on the transmission shaft 207 will not mesh with the driven bevel gear 301, so the driven bevel gear 301 will not rotate. When the dust accumulation on the first filter 205 increases, the air intake resistance increases, causing the first filter 205 to overcome the supporting force of the return spring 206 and make a large displacement. This causes the drive bevel gear 209 to mesh with the driven bevel gear 301 and drive the driven bevel gear 301 to rotate. This causes the striking block 308 to strike the bearing block 307 and produce a sound, thus automatically reminding the staff to clean the filter.

[0043] In this embodiment, the reminder function is precisely activated and deactivated by a linkage triggering mechanism between filter displacement and gear engagement. When the dust accumulation on the first filter 205 is low, the filter displacement is small or nonexistent, and the driving bevel gear 209 and the driven bevel gear 301 remain separated, preventing the automatic reminder structure from operating and avoiding meaningless reminder interference. Only when the dust accumulation increases, causing a significant displacement of the filter, does the gear engage to activate the reminder structure, ensuring that the reminder signal accurately matches the actual cleaning needs of the filter and improving the effectiveness and practicality of the reminder.

[0044] In some embodiments, the adaptive cleaning mechanism 4 may include a drive rack 401, one end of which is fixedly connected to the first filter 205; a support shaft 402, rotatably connected to the air intake pipe 201; a first torsion spring 403, sleeved on the support shaft 402, one end of which is fixedly connected to the support shaft 402, and the other end of which is fixedly connected to the air intake pipe 201; a first ratchet 404, disposed on the support shaft 402; a second ratchet 405, disposed on one side of the first ratchet 404, and also disposed on the support shaft 402; and a sliding gear. A rack 406 is located below the second ratchet 405; an intermittent rack 407 is fixedly connected to the bottom surface of the sliding rack 406; a driven gear 408 is located below the intermittent rack 407; a connecting shaft 409 is fixedly connected to the driven gear 408, and the connecting shaft 409 passes through and rotatably connects to the intake pipe 201; a striking block 410 is fixedly connected to the connecting shaft 409; and a second torsion spring 411 is sleeved on the connecting shaft 409, with one end fixedly connected to the inner surface of the intake pipe 201 and the other end fixedly connected to the connecting shaft 409.

[0045] The first ratchet 404 and the second ratchet 405 are mirror images of each other. Both the outer surfaces of the outer rings of the first ratchet 404 and the second ratchet 405 are provided with toothed structures. The first ratchet 404 is connected to the drive rack 401 through the toothed structure, and the second ratchet 405 is connected to the sliding rack 406 through the toothed structure. The toothed structures on the bottom surface of the intermittent rack 407 are intermittently distributed, and the intermittent rack 407 is connected to the driven gear 408. The intermittent rack 407 and the driven gear 408 both pass through and are slidably connected to the fixed cover 204.

[0046] The adaptive cleaning mechanism 4 is powered by a fixed connection between the drive rack 401 and the first filter 205. When the first filter 205 is displaced due to increased dust accumulation, overcoming the elastic force of the return spring 206, it drives the fixedly connected drive rack 401 to move synchronously. The drive rack 401 engages with the first ratchet 404 through its toothed structure, thereby driving the first ratchet 404 to rotate. Simultaneously, it drives the coaxially arranged second ratchet 405 to rotate synchronously. The second ratchet 405 engages with the sliding rack 406 through its outer toothed structure, converting its rotational motion into the linear reciprocating motion of the sliding rack 406. During this process, the first torsion spring 403, which is sleeved on the support shaft 402, deforms and stores force, providing a spring force basis for the subsequent reset of the transmission components. When the first ratchet 404 rotates, the inner ring of the second ratchet 405 rotates synchronously under the action of the support shaft 402. Since the second ratchet 405 and the first ratchet 404 are mirror images, when the outer ring of the first ratchet 404 can drive the inner ring of the first ratchet 404 to rotate, the inner ring of the second ratchet 405 cannot drive the outer ring of the second ratchet 405. The intermittent rack 407, which is fixed on the bottom surface of the sliding rack 406, moves synchronously in a straight line with the sliding rack. Since the tooth structure of the intermittent rack 407 is intermittently distributed, its meshing with the driven gear 408 is an intermittent transmission. When the toothed portion of the intermittent rack 407 meshes with the driven gear 408, it drives the driven gear 408 to rotate, thereby causing the fixedly connected connecting shaft 409 to rotate synchronously. When the connecting shaft 409 rotates, it causes the fixed striking block 410 on it to rotate and move away from the first filter screen. At the same time, the second torsion spring 411 sleeved on the connecting shaft 409 deforms and stores energy. When the toothless portion of the intermittent rack 407 moves to the position corresponding to the driven gear 408, the meshing relationship between the two is released, the stored energy of the second torsion spring 411 is quickly released, driving the connecting shaft 409 to rotate in the opposite direction, causing the striking block 410 to quickly reset and strike the first filter screen 205.

[0047] The device also includes a triangular bracket 1 located below the air intake pipe 201 for supporting the placement of the air intake pipe 201.

[0048] The triangular bracket 1 is located below the air intake pipe 201, and its core function is to provide stable support and a solid foundation for the entire device. Thanks to its structural stability, the triangular bracket 1 can stably support the air intake pipe 201 at the preset monitoring position, preventing the device from shaking or tipping over in complex outdoor environments (such as light winds or slight ground vibrations). By ensuring that the air intake pipe 201 remains in a stable working position, it guarantees the stable operation of subsequent functions such as adaptive wind direction adjustment, airflow acquisition, and filtration, preventing the air intake angle from shifting due to unstable support, which would affect airflow reception efficiency and the accuracy of monitoring data.

[0049] The wind vane 202, fixed to the upper surface of the air intake duct 201, can adjust its attitude in real time according to the external wind direction, thereby driving the air intake duct 201 to deflect synchronously, ensuring that the air intake duct 201 is always at the optimal windward angle, and realizing continuous and efficient airflow reception. After the external airflow enters the air intake duct 201, it first passes through the first filter screen 205 slidably connected to the inner surface of the duct. The first filter screen 205 performs preliminary interception and filtration of particulate matter in the air. The airflow after preliminary filtration continues to flow through the second filter screen 210 rotatably connected to the first filter screen 205 to complete the secondary filtration.

[0050] Since the mesh size, shape, and position of the first filter screen 205 and the second filter screen 210 are completely identical, the operator can manually rotate the second filter screen 210 by disassembling the friction locking block 211 to change its mesh alignment with the first filter screen 205, thereby adjusting the area of ​​the filter channel constructed by both screens to achieve the screening adaptation of particles of different sizes. After adjustment, the friction locking block 211 is reinstalled, with its bottom surface abutting against the outer surface of the second filter screen 210 to fix the angle of the second filter screen 210. At the same time, the airflow impacts the turbine fan 208 in the air intake pipe 201, driving the turbine fan 208 to rotate. The turbine fan 208 transmits torque to the drive bevel gear 209 through the transmission shaft 207, laying the foundation for the power transmission of the subsequent automatic reminder and cleaning mechanism.

[0051] When the amount of dust on the outer surface of the first filter 205 is small, the air intake resistance is small, and the airflow thrust on the first filter 205 is insufficient to overcome the elastic force of the return spring 206. The displacement is small or there is no displacement. At this time, the drive bevel gear 209 on the transmission shaft 207 is in a disengaged state from the driven bevel gear 301 in the automatic reminder feedback structure 3, and the automatic reminder structure does not operate.

[0052] As dust accumulates, the airflow thrust on the first filter 205 increases, overcoming the elastic force of the return spring 206 and causing a significant displacement. When the first filter 205 moves to the position of the limiting block 213, the limiting block 213, under the action of the extension spring 214, enters the groove on the first filter 205, temporarily fixing the position of the first filter 205. Simultaneously, the displacement of the first filter 205 drives the transmission shaft 207 to move synchronously, causing the driving bevel gear 209 to mesh with the driven bevel gear 301. The driven bevel gear 301 is fixedly connected to the cam 304 via the rotating shaft 302. The rotation of the driving bevel gear 209 drives the driven bevel gear 301 to rotate, thereby driving... The rotating shaft 302 rotates synchronously with the cam 304. The eccentric structure of the cam 304 continuously presses the reciprocating plate 305 inside the housing 303, causing the reciprocating plate 305 to slide downwards against the elastic force of the support spring 306. When the eccentric end of the cam 304 rotates away from the reciprocating plate 305, the elastic force of the support spring 306 pushes the reciprocating plate 305 upwards to reset, realizing the periodic up-and-down reciprocating motion of the reciprocating plate 305. The striking block 308 on the reciprocating plate 305 moves synchronously with the reciprocating plate 305, continuously striking the bearing block 307 (both are made of metal) fixed on the driven bevel gear 301, producing a clear sound and sending an automatic reminder signal to the staff that the filter needs to be cleaned.

[0053] When the first filter screen 205 is displaced due to increased dust accumulation, it will drive the fixedly connected drive rack 401 to move synchronously. The drive rack 401 meshes with the first ratchet 404 through its toothed structure, thereby driving the first ratchet 404 to rotate. At the same time, it drives the coaxially arranged second ratchet 405 to rotate synchronously. Since the first ratchet 404 and the second ratchet 405 are mirror images, their outer rings are both provided with toothed structures. When the first ratchet 404 rotates, it drives the inner ring of the second ratchet 405 to rotate synchronously through toothed transmission. However, due to the mirror design, the inner ring of the second ratchet 405 cannot drive its outer ring to rotate. At this time, the first torsion spring 403 sleeved on the support shaft 402 deforms and stores force.

[0054] When the first filter screen 205 accumulates too much dust and is fixed by the limiting block 213, the drive rack 401 stops moving until the operator hears an audible warning and manually pulls the limiting block 213 upward to release the first filter screen 205 from its limit. The stored force of the first torsion spring 403 is released, causing the support shaft 402 to rotate in the opposite direction, which in turn drives the outer ring of the second ratchet 405 to rotate. The second ratchet 405 meshes with the sliding rack 406 through its toothed structure, converting the rotational motion into the linear reciprocating motion of the sliding rack 406. The intermittent rack 407 on the bottom surface of the sliding rack 406 moves linearly along with it. Because the toothed structure of the intermittent rack 407 is intermittently distributed, its meshing with the driven gear 408 is an intermittent transmission: when the intermittent rack 407... When the toothed part meshes with the driven gear 408, it drives the driven gear 408 to rotate, causing the connecting shaft 409 and the striking block 410 to rotate synchronously, moving away from the first filter screen 205. At the same time, the second torsion spring 411 sleeved on the connecting shaft 409 deforms and stores energy. When the toothless part of the intermittent rack 407 moves to the position corresponding to the driven gear 408, the meshing relationship is released, the stored energy of the second torsion spring 411 is quickly released, driving the connecting shaft 409 to rotate in the opposite direction, causing the striking block 410 to quickly reset and strike the first filter screen 205. The impact force causes the dust on the filter screen to fall off, realizing the adaptive cleaning of the filter screen. The above is the overall working process of the present invention. This step can be repeated next time it is used. The actual operation process is very simple and easy.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0057] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration, characterized in that: It includes a triangular bracket (1), an air intake assembly (2), an automatic reminder feedback structure (3), and an adaptive cleaning mechanism (4); the triangular bracket (1) is located below the air intake pipe (201) and is used to support the placement of the air intake pipe (201); the air intake assembly (2) is connected to the automatic reminder feedback structure (3) and is fixedly connected to the adaptive cleaning mechanism (4).

2. The automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration according to claim 1, characterized in that: The intake assembly (2) includes an intake duct (201), a wind vane (202), a protective cover (203), a fixed outer cover (204), a first filter (205), a return spring (206), a drive shaft (207), a turbofan (208), a drive bevel gear (209), a second filter (210), a friction locking block (211), a fixed bracket (212), a limit block (213), and a telescopic spring (214); the wind vane (202) is fixedly connected to the upper surface of the intake duct (201); the protective cover (203) is symmetrically and fixedly installed on the outer surface of the intake duct (201); the fixed outer cover (204) is detachably connected to the protective cover (203); the first filter (205) is slidably connected to the inner surface of the intake duct (201); the return spring (206) is located between the first filter (205) and the protective cover (203), with one end fixedly connected to the first filter (205) and the other end fixedly connected to the protective cover (203). A protective cover (203); a drive shaft (207) is passed through and rotatably connected to a first filter screen (205); a turbofan (208) is fixedly connected to one end of the drive shaft (207); a drive bevel gear (209) is fixedly connected to the end of the drive shaft (207) away from the first filter screen (205); a second filter screen (210) is rotatably connected to the first filter screen (205); a friction locking block (211) is passed through and detachably connected to the intake pipe (201), and the friction... The bottom surface of the locking block (211) abuts against the outer surface of the second filter (210); the fixed bracket (212) is fixedly connected to the outer surface of the air intake pipe (201); the limiting block (213) passes through and slides to connect the fixed bracket (212) and the air intake pipe (201); the telescopic spring (214) is located between the limiting block (213) and the fixed bracket (212), with one end fixedly connected to the limiting block (213) and the other end fixedly connected to the fixed bracket (212).

3. The automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration according to claim 2, characterized in that: The mesh openings on the first filter (205) are the same in size, shape and position as those on the second filter (210), and the end of the limiting block (213) near the intake pipe (201) is wedge-shaped.

4. The automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration according to claim 3, characterized in that: The automatic reminder feedback structure (3) includes a driven bevel gear (301), a rotating shaft (302), a placement box (303), a cam (304), a reciprocating plate (305), a support spring (306), a bearing block (307), and a striking block (308); the driven bevel gear (301) meshes with the driving bevel gear (209); the rotating shaft (302) is fixedly connected to the driven bevel gear (301), and the rotating shaft (302) passes through and rotatably connects to the intake pipe (201); the placement box (303) is fixedly connected to the bottom surface of the intake pipe (201); the cam ( 304) is fixedly connected to the end of the rotating shaft (302) away from the driven bevel gear (301); the reciprocating plate (305) is slidably connected to the placement box (303); the support spring (306) is set between the placement box (303) and the reciprocating plate (305), with one end fixedly connected to the placement box (303) and the other end fixedly connected to the reciprocating plate (305); the bearing block (307) is fixedly connected to the driven bevel gear (301); the striking block (308) is fixedly connected to the reciprocating plate (305), and the striking block (308) passes through and is slidably connected to the placement box (303).

5. The automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration according to claim 4, characterized in that: Both the striking block (308) and the bearing block (307) are made of metal.

6. The automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration according to claim 5, characterized in that: The adaptive cleaning mechanism (4) includes a drive rack (401), a support shaft (402), a first torsion spring (403), a first ratchet (404), a second ratchet (405), a sliding rack (406), an intermittent rack (407), a driven gear (408), a connecting shaft (409), a striking block (410), and a second torsion spring (411); one end of the drive rack (401) is fixedly connected to the first filter screen (205); the support shaft (402) is rotatably connected to the air intake pipe (201); the first torsion spring (403) is sleeved on the support shaft (402), one end is fixedly connected to the support shaft (402), and the other end is fixedly connected to the air intake pipe (201); the first ratchet (404) is located on the support shaft (402 ... second torsion spring (405) is mounted on the support shaft (402); the third torsion spring (406) is mounted on the support shaft (407), and the second torsion spring (405) is mounted on the support shaft (406); the fourth torsion spring (407) is mounted on the support shaft (408), and the fifth torsion spring (409) is mounted on the support shaft (400); the fifth torsion spring (409) is mounted on the support shaft (402); the sixth torsion spring (400) is mounted on the support shaft (402); the seventh torsion spring (409) is mounted on the support shaft (402); the fifth torsion spring (401) is mounted on the support shaft (40 Two ratchet wheels (405) are located on one side of the first ratchet wheel (404), and the second ratchet wheel (405) is also located on the support shaft (402); a sliding rack (406) is located below the second ratchet wheel (405); an intermittent rack (407) is fixedly connected to the bottom surface of the sliding rack (406); a driven gear (408) is located below the intermittent rack (407); a connecting shaft (409) is fixedly connected to the driven gear (408), and the connecting shaft (409) passes through and rotatably connects to the air intake pipe (201); a striking block (410) is fixedly connected to the connecting shaft (409); a second torsion spring (411) is sleeved on the connecting shaft (409), one end is fixedly connected to the inner surface of the air intake pipe (201), and the other end is fixedly connected to the connecting shaft (409).

7. An automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration according to claim 6, characterized in that: The first ratchet (404) and the second ratchet (405) are mirrored.

8. The automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration according to claim 7, characterized in that: The outer surface of the outer ring of the first ratchet (404) and the outer surface of the outer ring of the second ratchet (405) are both provided with toothed structures. The first ratchet (404) is connected to the drive rack (401) through the toothed structure, and the second ratchet (405) is connected to the sliding rack (406) through the toothed structure.

9. An automatic early warning device for atmospheric particulate matter for monitoring air pollution concentration according to claim 8, characterized in that: The toothed structure on the bottom surface of the intermittent rack (407) is intermittently distributed, and the intermittent rack (407) meshes with the driven gear (408).

10. An automatic early warning device for monitoring atmospheric particulate matter concentration for air pollution according to claim 9, characterized in that: The intermittent rack (407) and driven gear (408) both pass through and are slidably connected to the fixed outer cover (204).

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