A microporous aerator anti-clogging diffusion membrane assembly

Abstract

This utility model relates to the field of aerator technology, specifically to a microporous aerator anti-clogging diffusion membrane assembly, comprising: a shell assembly, including a bottom shell and an upper shell connected to the bottom shell; a drive mechanism, which is disposed in the bottom shell and can be driven by the inflowing airflow to generate rotational power; a transmission assembly, including a magnetic transmission component that can be rotated and moved axially by the drive mechanism; utilizing a single air source power, an integrated transmission mechanism automatically realizes an orderly workflow of "thorough cleaning first, then efficient aeration"; it increases torque and controls speed by driving a gear set through airflow, driving the magnetic transmission component to rotate and rise precisely, initially closing the air path and driving a scraper to remove surface blockages, effectively reducing the start-up load and the risk of membrane damage, and then automatically opening the air path after rising to a predetermined position, and using a guide plate to generate swirling gas to evenly distribute gas and enhance the membrane's self-cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of aerator technology, specifically to a microporous aerator anti-clogging diffusion membrane assembly. Background Technology

[0002] Microporous aerators are key gas diffusion devices in wastewater treatment. They generate a large number of fine bubbles through tiny pores on their membranes, which greatly improves oxygen transfer efficiency and thus efficiently promotes the metabolic activities of aerobic microorganisms in the water. Their application significantly improves the biochemical reaction rate, enhances the system's treatment capacity and stability, and effectively reduces energy consumption and operating costs. They are one of the core technologies for achieving energy conservation, consumption reduction and compliance with emission standards in wastewater treatment plants.

[0003] Microporous aerators are of great significance for water pollution control and resource conservation, but they still have certain problems: 1) the cleaning and aeration functions interfere with each other; 2) the surface deposit scraping torque is insufficient or easily jammed; 3) the aeration airflow distribution is uneven and lacks self-cleaning ability. Therefore, in view of the above situation, it is urgent to develop a microporous aerator anti-clogging diffusion membrane assembly to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide a microporous aerator anti-clogging diffusion membrane assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a microporous aerator anti-clogging diffusion membrane assembly, comprising:

[0006] A housing assembly, comprising a bottom housing and an upper housing connected to the bottom housing;

[0007] The drive mechanism is located inside the bottom shell and can be driven by the incoming airflow to generate rotational power;

[0008] A transmission assembly, comprising a magnetic transmission element that can be rotated and moved axially by a drive mechanism;

[0009] A diffusion assembly disposed within an upper housing and comprising a diaphragm and a flow guiding structure located below the diaphragm;

[0010] The top cover is installed on the upper housing and has several vent holes.

[0011] A scraping assembly, comprising a scraper that can be rotated by a transmission assembly;

[0012] The positioning ring is used to press and fix the periphery of the diaphragm into the upper housing;

[0013] The magnetic drive component has a first position and a second position: in the first position, the magnetic drive component seals the air intake channel of the flow guide structure, and the magnetic drive component drives the scraper to rotate through magnetic coupling; in the second position, the magnetic drive component opens the air intake channel, allowing the airflow to reach the diaphragm through the flow guide structure.

[0014] Specifically, the incoming airflow drives the drive mechanism to generate rotational power, which in turn drives the magnetic transmission component in the transmission assembly to rotate and move axially. In the first position, the magnetic transmission component first seals the air intake channel of the guide structure. During this stage, the magnetic coupling drives the scraper to rotate, pre-removing the impurities accumulated on the top cover surface. After cleaning is completed, the magnetic transmission component moves to the second position to open the air intake channel, allowing the airflow to reach the membrane for aeration. This sequential process effectively reduces the initial aeration pressure caused by impurity accumulation, avoids potential damage to the membrane during high-pressure startup, ensures aeration efficiency, and extends service life.

[0015] Preferably, the drive mechanism includes:

[0016] The impeller is rotatably mounted in the air intake channel of the bottom shell and is driven by airflow;

[0017] A gear transmission assembly, which is driven by an impeller and transmits rotational motion to the transmission components.

[0018] Specifically, by setting up an impeller driven by airflow and a gear transmission assembly connected to it, the kinetic energy of airflow can be efficiently converted into rotational mechanical energy. The impeller, as the initial power source, has a simple structure and responds quickly, while the gear transmission assembly can effectively transmit and adjust torque and speed, thereby providing stable and reliable rotational power for the transmission components and ensuring that the entire anti-clogging and aeration process proceeds in an orderly manner.

[0019] Preferably, the gear transmission assembly includes a bevel gear assembly and a reduction gear assembly that mesh with each other. The bevel gear assembly includes a first bevel gear mounted coaxially with the impeller and a second bevel gear that meshes with the first bevel gear. The reduction gear assembly includes a pinion mounted coaxially with the second bevel gear and a large gear that meshes with the pinion gear.

[0020] Specifically, this gear transmission assembly, through the meshing of bevel gears and reduction gears, first uses the bevel gears to change the direction of power transmission, adapting to the compact structural layout of the disc aerator. Then, the reduction gears effectively increase the output torque and reduce the speed, thereby providing strong and stable rotational power for the transmission components. This ensures that the scraper can powerfully and reliably scrape away hard deposits. At the same time, its slow speed characteristics match the slow upward stroke of the magnetic transmission components, ensuring precise and controllable sealing and opening actions.

[0021] Preferably, the transmission assembly includes:

[0022] A threaded seat that is fixedly installed inside the bottom shell;

[0023] A magnetic transmission component, comprising a transmission shaft, a threaded shaft coaxially fixed to the bottom end of the transmission shaft, and a magnetic sleeve coaxially fixed to the top end of the transmission shaft.

[0024] The threaded shaft and the threaded seat form a threaded pair through threaded engagement.

[0025] The large gear is slidably fitted onto the drive shaft via a keyway mechanism.

[0026] Specifically, the transmission component forms a threaded pair with the threaded shaft at the bottom of the magnetic transmission component through a threaded seat fixedly installed in the bottom shell. This ingeniously transforms the rotational motion transmitted by the large gear through the keyway into a precise and stable spiral upward or downward motion of the transmission shaft, thereby reliably driving the magnetic sleeve at the top to switch between its two working positions. This keyway structure ensures the effective transmission of rotational power and allows the transmission shaft to move freely axially while rotating. It realizes the sequential control of the two major functions of scraping and cleaning and starting aeration with a single power source. The structure is compact and the operation is reliable.

[0027] Preferably, the keyway mating structure includes a key disposed on the drive shaft and a keyway disposed on the inner hole of the large gear that matches the key. The bottom shell is provided with a gear retainer for axially positioning the large gear, so that the large gear can rotate but is axially fixed. Thus, when the large gear rotates, the drive shaft is driven to rotate through the mating of the key and the keyway, thereby causing the threaded shaft to rotate relative to the fixed threaded seat and generate axial displacement.

[0028] Specifically, the key-gear mating structure, with the keyway in the inner hole of the large gear and the gear retainer inside the bottom housing independently handling the axial positioning of the large gear, achieves precise decoupling of rotational power transmission and axial movement functions. The keyway mating ensures that the rotational power of the drive mechanism can be efficiently and smoothly transmitted to the drive shaft without slippage, while not interfering with its necessary axial movement freedom. The dedicated gear retainer firmly restricts the axial position of the large gear, preventing it from shifting due to the axial component of the gear meshing force or vibration. This ensures the smoothness and reliability of the meshing transmission of the entire gear transmission group, as well as the accuracy of the threaded pair stroke control, ultimately ensuring the accuracy and orderliness of the switching of working modes.

[0029] Preferably, the flow guiding structure includes a flow guiding disk with a through hole at the center. Multiple exhaust grooves are radially formed from the inner wall of the central through hole toward the upper surface of the flow guiding disk. Multiple spiral flow guiding vanes for forming a swirling flow are also installed on the upper surface of the flow guiding disk.

[0030] Specifically, the guide plate, through its central through-hole and multiple radially opened exhaust grooves, forms the core channel for delivering airflow from the periphery of the magnetic drive component to the area below the diaphragm. The multiple spiral guide vanes installed on its upper surface can transform the flowing gas into a strong swirling flow. This swirling flow can, on the one hand, ensure that the gas is evenly distributed below the diaphragm, avoid local stress, and promote the uniform generation of microbubbles. On the other hand, its continuous shearing and disturbance effect on the lower surface of the diaphragm can effectively remove impurities that may adhere to or are about to clog the micropores, achieving online self-cleaning during the aeration process. This significantly improves the continuity of anti-clogging capability and optimizes the aeration effect.

[0031] Preferably, the outer wall of the magnetic sleeve slides and seals with the central through hole of the guide plate; in the first position, the bottom edge of the magnetic sleeve closes the inlet of the exhaust groove on the inner wall of the central through hole; in the second position, the magnetic sleeve rises so that its bottom edge passes over the inlet of the exhaust groove, thereby opening the air intake passage.

[0032] Specifically, the sliding seal between the magnetic sleeve and the central through hole of the guide plate constitutes an integrated air circuit switching valve: in the first position, its bottom edge reliably seals the exhaust slot inlet, ensuring that all intake airflow is guided to the drive mechanism to drive the scraper to perform cleaning tasks, achieving precise energy distribution; in the second position, its upward movement precisely exposes the exhaust slot inlet, smoothly opening the main air intake channel to the diaphragm. This design, which deeply integrates valve function with transmission component structure, eliminates the need for additional independent electromagnetic or pneumatic control components. It automatically and reliably achieves air circuit switching and isolation between the two working stages of cleaning and aeration through the mechanical movement of the magnetic transmission component itself, simplifying the overall structure and improving system reliability.

[0033] Preferably, a sealing ring is provided between the magnetic sleeve and the central through hole.

[0034] Preferably, the bottom of the threaded shaft is provided with a smooth shaft section without threads; when the magnetic transmission component rises to the second position, the threaded part of the threaded shaft is completely disengaged from the threaded seat, and the smooth shaft section is located inside the threaded seat. At this time, the magnetic transmission component only rotates without generating axial displacement.

[0035] Specifically, the smooth, unthreaded shaft section at the bottom of the threaded shaft constitutes a clever mechanical self-locking and state-maintaining mechanism: when the magnetic transmission component rises to the second position, the threaded portion completely disengages from the threaded seat, causing the transmission shaft and its connected magnetic sleeve to lose the driving force for axial movement, and only perform pure rotational motion under the guiding engagement of the smooth shaft section and the inner hole of the threaded seat; on the one hand, this ensures that during the continuous aeration phase, the magnetic sleeve can be stably maintained at the highest position of the open exhaust slot, the air passage remains unobstructed, and the aeration process is undisturbed; on the other hand, it eliminates unnecessary friction, wear, and energy consumption caused by the continuous high-speed rotation of the threaded pair, improving transmission efficiency and mechanism life; when the airflow stops, the magnetic transmission component can smoothly descend under the action of gravity, allowing the threaded portion of the threaded shaft to re-engage with the threaded seat, preparing for the next working cycle.

[0036] Preferably, the scraping assembly further includes a magnetic shaft, a retainer is provided inside the upper housing, a sleeve is installed in the middle of the retainer, the magnetic shaft is rotatably installed in the sleeve, its top end passes through the diaphragm and the top cover and is connected to the scraper, and a first permanent magnet is provided on the outer periphery of its bottom end; a second permanent magnet is provided on the inner wall of the magnetic sleeve of the magnetic transmission component; the rotational motion of the magnetic sleeve is transmitted to the magnetic shaft through the magnetic coupling between the first permanent magnet and the second permanent magnet.

[0037] Specifically, the scraping assembly uses a non-contact magnetic coupling transmission between the first permanent magnet at the bottom of the magnetic shaft and the second permanent magnet on the inner wall of the magnetic sleeve of the magnetic transmission component. This achieves reliable transmission of rotational power across the physical isolation between the upper and lower shells. This design allows the power required to drive the scraper to rotate to pass through the static sealing barrier formed by the cage and sleeve without damage. This ensures the airtightness of the aeration chamber inside the upper shell, preventing sewage backflow into the transmission mechanism, and completely avoids the structural complexity, potential leakage points, and frictional losses caused by the rotating shaft penetrating the shell, which requires dynamic sealing. At the same time, the characteristics of magnetic coupling give it a natural overload protection capability. When the scraper encounters unexpected and huge resistance, slippage will occur between the magnetic poles, effectively preventing the mechanism from jamming or being damaged.

[0038] The impeller is driven to rotate by the intake airflow, and the transmission components are driven by the gear transmission group after the speed is reduced and the torque is increased.

[0039] In the initial stage, the magnetic transmission component in the transmission assembly rotates and rises axially. During this process, its magnetic sleeve seals the air intake channel and drives the scraper to rotate through magnetic coupling, scraping off the surface deposits.

[0040] When the magnetic drive component rises to the second position, the air intake channel is opened, and the airflow forms a vortex after passing through the guide structure and reaches the diaphragm, where it diffuses and aerates.

[0041] When the air intake stops, the transmission assembly rotates in the opposite direction under its own weight and descends to reset to the first position.

[0042] Compared with the prior art, this utility model provides a microporous aerator anti-clogging diffusion membrane assembly, which has the following beneficial effects:

[0043] Utilizing a single air source, an integrated transmission mechanism automatically achieves an orderly workflow of "thorough cleaning followed by efficient aeration." It increases torque and controls speed by driving a gear set with airflow, rotating and precisely lifting a magnetic transmission component. In the initial stage, the air path is closed, and a scraper removes surface blockages, effectively reducing startup load and the risk of diaphragm damage. After rising to a predetermined position, the air path is automatically opened, and a guide plate generates a swirling flow to evenly distribute the gas and enhance the diaphragm's self-cleaning effect. Simultaneously, the magnetic coupling transmission method completely solves the leakage problem of dynamic seals in rotating components and includes built-in overload protection. The smooth shaft section at the end of the threaded shaft ensures stable operation and extends the lifespan of the mechanism during the aeration stage. Ultimately, this comprehensive approach significantly improves anti-clogging reliability, aeration efficiency, and equipment durability. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0046] Figure 2 This is a partial cross-sectional view of the entire utility model;

[0047] Figure 3 This is an exploded view of the entire utility model;

[0048] Figure 4 This is a schematic diagram showing the positional relationship between the drive mechanism, upper housing, magnetic shaft, and scraper of this utility model;

[0049] Figure 5 This is a schematic diagram of the drive mechanism structure of this utility model;

[0050] Figure 6 This is a schematic diagram of the magnetic transmission component of this utility model;

[0051] Figure 7 This is a schematic diagram of the flow guide plate structure of this utility model;

[0052] Figure 8 This is a side longitudinal section view of the guide plate of this utility model.

[0053] In the diagram: 10, bottom shell; 20, drive mechanism; 201, impeller; 202, first bevel gear; 203, second bevel gear; 204, pinion; 205, threaded seat; 206, magnetic transmission component; 2061, drive shaft; 2062, threaded shaft; 2062a, smooth shaft section; 2063, magnetic sleeve; 2064, second permanent magnet; 2065, key; 207, large gear; 30, upper shell; 301, retainer; 302, sleeve; 40, guide plate; 401, through hole; 402, exhaust groove; 403, guide vane; 50, diaphragm; 60, positioning ring; 70, magnetic shaft; 701, first permanent magnet; 80, top cover; 801, exhaust hole; 90, scraper. Detailed Implementation

[0054] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] Example:

[0057] Please see Figures 1-8 This utility model provides a technical solution: a microporous aerator anti-clogging diffusion membrane assembly, comprising:

[0058] A housing assembly, comprising a bottom housing 10 and an upper housing 30 connected to the bottom housing 10;

[0059] The drive mechanism 20 is disposed inside the bottom shell 10 and can be driven by the incoming airflow to generate rotational power;

[0060] The transmission assembly includes a magnetic transmission element 206 that can be rotated and moved axially by the drive mechanism 20;

[0061] A diffusion assembly disposed within an upper housing 30 and including a diaphragm 50 and a flow guiding structure located below the diaphragm 50;

[0062] A top cover 80 is mounted on the upper housing 30, and the top cover 80 is provided with several vent holes 801;

[0063] The scraping assembly includes a scraper 90 that can be rotated by a transmission assembly;

[0064] The positioning ring 60 is used to press and fix the periphery of the diaphragm 50 into the upper housing 3;

[0065] The magnetic drive component 206 has a first position and a second position: in the first position, the magnetic drive component 206 seals the air intake channel of the guide structure, and the magnetic drive component 206 drives the scraper 90 to rotate through magnetic coupling; in the second position, the magnetic drive component 206 opens the air intake channel, so that the airflow can reach the diaphragm 50 through the guide structure.

[0066] Specifically, the inflowing airflow drives the drive mechanism 20 to generate rotational power, which in turn drives the magnetic transmission component 206 in the transmission assembly to rotate and move axially. In the first position, the magnetic transmission component 206 first seals the air intake channel of the guide structure. During this stage, the magnetic coupling drives the scraper 90 to rotate, pre-removing the impurities accumulated on the surface of the top cover 80. After cleaning is completed, the magnetic transmission component 206 moves to the second position to open the air intake channel, allowing the airflow to reach the membrane 50 for aeration. This sequential order effectively reduces the initial aeration pressure caused by impurity accumulation, avoids damage to the membrane 50 that may occur when starting under high pressure, ensures aeration efficiency, and extends service life.

[0067] Preferably, the drive mechanism 20 includes:

[0068] Impeller 201 is rotatably disposed in the air intake channel of bottom shell 10 and is driven by airflow;

[0069] The gear transmission assembly is driven by the impeller 201 and transmits the rotational motion to the transmission components.

[0070] Specifically, by setting up an impeller 201 driven by airflow and a gear transmission assembly connected to it, the kinetic energy of airflow can be efficiently converted into rotational mechanical energy. The impeller 201 serves as the initial power source with a simple structure and rapid response, while the gear transmission assembly can effectively transmit and adjust torque and speed, thereby providing stable and reliable rotational power for the transmission components and ensuring the orderly progress of the entire anti-clogging and aeration process.

[0071] Preferably, the gear transmission assembly includes a bevel gear assembly and a reduction gear assembly that mesh with each other. The bevel gear assembly includes a first bevel gear 202 coaxially mounted with the impeller 201 and a second bevel gear 203 meshing with the first bevel gear 202. The reduction gear assembly includes a pinion 204 coaxially mounted with the second bevel gear 203 and a large gear 207 meshing with the pinion 204.

[0072] Specifically, the gear transmission assembly, through the meshing of bevel gears and reduction gears, first uses the bevel gears to change the direction of power transmission, adapting to the compact structural layout of the disc aerator. Then, the reduction gears effectively increase the output torque and reduce the speed, thereby providing strong and stable rotational power for the transmission components. This ensures that the scraper 90 can powerfully and reliably scrape away hard deposits. At the same time, its slow speed characteristics match the slow upward stroke of the magnetic transmission component 206, ensuring precise and controllable sealing and opening actions.

[0073] Preferably, the transmission assembly includes:

[0074] A threaded seat 205 is fixedly installed inside the bottom shell 10;

[0075] The magnetic transmission component 206 includes a transmission shaft 2061, a threaded shaft 2062 coaxially fixed to the bottom end of the transmission shaft 2061, and a magnetic sleeve 2063 coaxially fixed to the top end of the transmission shaft 2061.

[0076] Among them, the threaded shaft 2062 and the threaded seat 205 form a threaded pair through threaded engagement;

[0077] The large gear 207 is slidably fitted onto the drive shaft 2061 via a keyway fit structure.

[0078] Specifically, the transmission assembly forms a threaded pair with the threaded seat 205 fixedly installed in the bottom shell 10 and the threaded shaft 2062 at the bottom of the magnetic transmission component 206. This cleverly transforms the rotational motion transmitted by the large gear 207 through the keyway into the precise and stable spiral upward or downward motion of the transmission shaft 2061, thereby reliably driving the magnetic sleeve 2063 at the top to switch between its two working positions. This keyway structure not only ensures the effective transmission of rotational power but also allows the transmission shaft 2061 to move freely axially while rotating. It realizes the sequential control of the two major functions of scraping and cleaning and starting aeration with a single power source. The structure is compact and the operation is reliable.

[0079] Preferably, the keyway mating structure includes a key 2065 disposed on the drive shaft 2061 and a keyway disposed on the inner hole of the large gear 207 that matches the key 2065. The bottom shell 10 is provided with a gear retainer for axially positioning the large gear 207, so that the large gear 207 can rotate but is axially fixed. Thus, when the large gear 207 rotates, the drive shaft 2061 is driven to rotate through the mating of the key 2065 and the keyway, thereby causing the threaded shaft 2062 to rotate relative to the fixed threaded seat 205 and generate axial displacement.

[0080] Specifically, the key 2065 and the keyway in the inner hole of the large gear 207 are fitted together, and the axial positioning of the large gear 207 is independently undertaken by the gear retainer in the bottom shell 10. This achieves precise decoupling of rotational power transmission and axial movement function: the keyway fit ensures that the rotational power of the drive mechanism 20 can be efficiently and without slippage transmitted to the drive shaft 2061, while not interfering with its necessary axial movement freedom; while the dedicated gear retainer firmly restricts the axial position of the large gear 207, preventing it from moving due to the axial component of the gear meshing force or vibration, thereby ensuring the smoothness and reliability of the meshing transmission of the entire gear transmission group and the accuracy of the threaded pair stroke control, ultimately ensuring the accuracy and orderliness of the working mode switching.

[0081] Preferably, the flow guiding structure includes a flow guiding disk 40, a through hole 401 is provided at the center of the flow guiding disk 40, and a plurality of exhaust grooves 402 are radially provided from the inner wall of the central through hole 401 toward the upper surface of the flow guiding disk 40. A plurality of spiral flow guiding vanes 403 for making the airflow form a swirling flow are also installed on the upper surface of the flow guiding disk 40.

[0082] Specifically, the guide plate 40, through its central through hole 401 and multiple radially opened exhaust grooves 402, together form the core channel for conveying airflow from the periphery of the magnetic transmission component 206 to the area below the diaphragm 50. The multiple spiral guide vanes 403 installed on its upper surface can transform the flowing gas into a strong swirling flow. This swirling flow can, on the one hand, make the gas evenly distributed below the diaphragm 50, avoid local stress and promote the uniform generation of microbubbles. On the other hand, its continuous shearing and disturbance effect on the lower surface of the diaphragm 50 can effectively remove impurities that may adhere to or are about to clog the micropores, realizing online self-cleaning during the aeration process, thereby significantly improving the continuity of anti-clogging ability and optimizing the aeration effect.

[0083] Preferably, the outer wall of the magnetic sleeve 2063 slides and seals with the central through hole 401 of the guide plate 40; in the first position, the bottom edge of the magnetic sleeve 2063 closes the inlet of the exhaust groove 402 on the inner wall of the central through hole 401; in the second position, the magnetic sleeve 2063 rises so that its bottom edge passes over the inlet of the exhaust groove 402, thereby opening the air intake passage.

[0084] Specifically, the sliding seal between the magnetic sleeve 2063 and the central through hole 401 of the guide plate 40 constitutes an integrated air circuit switching valve: in the first position, its bottom edge reliably seals the inlet of the exhaust groove 402, ensuring that all intake airflow is guided to the drive mechanism 20 to drive the scraper 90 to perform cleaning tasks, thus achieving precise energy distribution; in the second position, its upward movement precisely exposes the inlet of the exhaust groove 402, smoothly opening the main air intake channel to the diaphragm 50. This design, which deeply integrates the valve function with the transmission component structure, eliminates the need for additional independent electromagnetic or pneumatic control components. It automatically and reliably achieves the air circuit switching and isolation between the two working stages of cleaning and aeration through the mechanical movement of the magnetic transmission component 206 itself, simplifying the overall structure and improving system reliability.

[0085] Preferably, a sealing ring is provided between the magnetic sleeve 2063 and the central through hole 401.

[0086] Preferably, the bottom of the threaded shaft 2062 is provided with a smooth shaft section 2062a without threads; when the magnetic transmission member 206 rises to the second position, the threaded part of the threaded shaft 2062 is completely disengaged from the threaded seat 205, and the smooth shaft section 2062a is located inside the threaded seat 205. At this time, the magnetic transmission member 206 only rotates without generating axial displacement.

[0087] Specifically, the smooth, unthreaded shaft section 2062a at the bottom of the threaded shaft 2062 constitutes a clever mechanical self-locking and state-maintaining mechanism: when the magnetic transmission component 206 rises to the second position, the threaded portion completely disengages from the threaded seat 205, causing the transmission shaft 2061 and its connected magnetic sleeve 2063 to lose the driving force for axial movement, and only perform pure rotational motion under the guiding engagement of the smooth shaft section 2062a and the inner hole of the threaded seat 205; on the one hand, this ensures that during the continuous aeration phase, the magnetic sleeve 2063 can be stably maintained at the highest position of the open exhaust groove 402, the air passage remains unobstructed, and the aeration process is undisturbed; on the other hand, it eliminates unnecessary friction and wear and energy consumption caused by the continuous high-speed rotation of the threaded pair, improving transmission efficiency and mechanism life; when the airflow stops, the magnetic transmission component 206 can smoothly descend under the action of gravity, allowing the threaded portion of the threaded shaft 2062 to re-engage with the threaded seat 205, preparing for the next working cycle.

[0088] Preferably, the scraping assembly further includes a magnetic shaft 70. A retainer 301 is provided inside the upper housing 30. A sleeve 302 is installed in the middle of the retainer 301. The magnetic shaft 70 is rotatably installed in the sleeve 302. Its top end passes through the diaphragm 50 and the top cover 80 and is connected to the scraper 90. A first permanent magnet 701 is provided on the outer periphery of its bottom end. A second permanent magnet 2064 is provided on the inner wall of the magnetic sleeve 2063 of the magnetic transmission component 206. The rotational motion of the magnetic sleeve 2063 is transmitted to the magnetic shaft 70 through the magnetic coupling between the first permanent magnet 701 and the second permanent magnet 2064.

[0089] Specifically, the scraping assembly uses a non-contact magnetic coupling transmission between the first permanent magnet 701 at the bottom of the magnetic shaft 70 and the second permanent magnet 2064 on the inner wall of the magnetic sleeve 2063 of the magnetic transmission component 206. This achieves reliable transmission of rotational power across the physical isolation between the upper shell 30 and the bottom shell 10. This design allows the power required to drive the scraper 90 to rotate to pass through the static sealing barrier formed by the retainer 301 and the sleeve 302 without damage. This ensures the airtightness of the aeration chamber inside the upper shell 30, preventing sewage from flowing back into the transmission mechanism. It also completely avoids the structural complexity, potential leakage points, and frictional losses caused by the rotating shaft penetrating the shell, which requires dynamic sealing. At the same time, the characteristics of magnetic coupling give it a natural overload protection capability. When the scraper 90 encounters unexpected huge resistance, slippage will occur between the magnetic poles, effectively preventing the mechanism from jamming or being damaged.

[0090] The impeller 201 is driven to rotate by the intake airflow, and the transmission component is driven by the gear transmission group after the speed is reduced and the torque is increased.

[0091] In the transmission assembly, the magnetic transmission component 206 initially rotates and rises axially. During this process, its magnetic sleeve 2063 seals the air intake channel and drives the scraper 90 to rotate through magnetic coupling, scraping off surface deposits.

[0092] When the magnetic drive component 206 rises to the second position, the air intake channel is opened, and the airflow forms a vortex through the guide structure 40 and reaches the diaphragm 50, where it diffuses and aerates.

[0093] When the air intake stops, the transmission assembly rotates in the opposite direction under its own weight and descends to reset to the first position.

[0094] Working principle: An external air source enters the bottom shell 10 through the installation pipe, and the airflow drives the impeller 201 of the drive mechanism 20 to rotate. The rotation of the impeller 201 changes the transmission direction through the bevel gear set (first bevel gear 202, second bevel gear 203), and then through the reduction gear set (small gear 204, large gear 207) to increase the output torque and reduce the speed; the large gear 207 transmits the rotational motion to the transmission shaft 2061 through the keyway, driving the entire magnetic transmission component 206 to rotate. Since the threaded shaft 2062 and the fixed threaded seat 205 form a threaded pair, the magnetic transmission component 206 begins to slowly rise axially while rotating;

[0095] In the initial first position (cleaning stage), the magnetic drive component 206 is at its lowest point of travel. At this time, the magnetic sleeve 2063 at its top seals the inlet of the exhaust groove 402 on the inner wall of the central through hole 401 of the guide plate 40, completely cutting off the airflow channel to the diaphragm 50; at the same time, the second permanent magnet 2064 on the inner wall of the magnetic sleeve 2063 drives the first permanent magnet 701 at the bottom of the magnetic shaft 70 through magnetic coupling, thereby driving the magnetic shaft 70 and the scraper 90 installed above the top cover 80 to rotate, scraping away the sludge and impurities deposited on the surface of the top cover 80, preparing for subsequent aeration;

[0096] As the magnetic drive component 206 continues to rotate and rise, the magnetic sleeve 2063 gradually disengages from the inlet of the exhaust groove 402. When it rises to the second position (aeration stage), the inlet of the exhaust groove 402 is fully opened, the main air intake channel is opened, and the airflow then enters the area above the guide plate 40 through the exhaust groove 402 and forms a swirling flow along the spiral guide plate 403, acting evenly on the lower surface of the diaphragm 50, causing it to bulge. The gas finally escapes from the micropores of the diaphragm 50, forming tiny bubbles for aeration. At this stage, the threaded part of the threaded shaft 2062 has completely disengaged from the threaded seat 205, and the smooth shaft section 2062a at its bottom is located inside the threaded seat 205, so that the magnetic drive component 206 only maintains rotation and no longer rises, ensuring that the air path remains unobstructed and the aeration process proceeds stably.

[0097] When the air supply stops, the drive mechanism 20 loses power; the magnetic transmission component 206 rotates and descends along the threaded pair under its own gravity, the magnetic sleeve 2063 re-closes the inlet of the exhaust groove 402, the scraper 90 stops rotating, the entire assembly resets to the initial state, and waits for the next start-up cycle.

[0098] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A microporous aerator anti-clogging diffusion membrane assembly, characterized in that: include A housing assembly comprising a bottom shell (10) and an upper shell (30) connected to the bottom shell (10); A drive mechanism (20) is disposed inside the bottom shell (10) and can be driven by the incoming airflow to generate rotational power; The transmission assembly includes a magnetic transmission element (206) that can be rotated and moved axially by the drive mechanism (20); A diffusion assembly disposed within the upper housing (30) and comprising a diaphragm (50) and a flow guiding structure located below the diaphragm (50); A top cover (80) is installed on the upper housing (30), and the top cover (80) has a plurality of vent holes (801). A scraping assembly, comprising a scraper (90) that can be rotated by the transmission assembly; A positioning ring (60) is used to press and fix the periphery of the diaphragm (50) into the upper housing (3); The magnetic transmission component (206) has a first position and a second position: in the first position, the magnetic transmission component (206) seals the air intake channel of the flow guide structure, and the magnetic transmission component (206) drives the scraper (90) to rotate through magnetic coupling; in the second position, the magnetic transmission component (206) opens the air intake channel, allowing the airflow to reach the diaphragm (50) through the flow guide structure.

2. The anti-clogging diffusion membrane assembly for a microporous aerator according to claim 1, characterized in that: The drive mechanism (20) includes: An impeller (201) is rotatably disposed in the air intake channel of the bottom shell (10) and is driven by airflow; A gear transmission assembly, driven by the impeller (201) and transmitting rotational motion to the transmission component.

3. The anti-clogging diffusion membrane assembly for a microporous aerator according to claim 2, characterized in that: The gear transmission assembly includes a bevel gear assembly and a reduction gear assembly that mesh with each other. The bevel gear assembly includes a first bevel gear (202) coaxially mounted with the impeller (201) and a second bevel gear (203) meshing with the first bevel gear (202). The reduction gear assembly includes a pinion (204) coaxially mounted with the second bevel gear (203) and a large gear (207) meshing with the pinion (204).

4. The anti-clogging diffusion membrane assembly for a microporous aerator according to claim 3, characterized in that: The transmission assembly includes: A threaded seat (205) is fixedly installed inside the bottom shell (10); The magnetic transmission component (206) includes a transmission shaft (2061), a threaded shaft (2062) coaxially fixed to the bottom end of the transmission shaft (2061), and a magnetic sleeve (2063) coaxially fixed to the top end of the transmission shaft (2061). The threaded shaft (2062) and the threaded seat (205) form a threaded pair through threaded engagement; The large gear (207) is slidably mounted on the transmission shaft (2061) through a keyway fit structure.

5. The anti-clogging diffusion membrane assembly for a microporous aerator according to claim 4, characterized in that: The keyway mating structure includes a key (2065) disposed on the drive shaft (2061) and a keyway disposed on the inner hole of the large gear (207) that matches the key (2065). The bottom shell (10) is provided with a gear retainer for axially positioning the large gear (207).

6. The anti-clogging diffusion membrane assembly for a microporous aerator according to claim 1, characterized in that: The flow guiding structure includes a flow guiding disk (40), a through hole (401) is provided at the center of the flow guiding disk (40), and a plurality of exhaust grooves (402) are provided radially from the inner wall of the central through hole (401) toward the upper surface of the flow guiding disk (40). A plurality of spiral flow guiding vanes (403) for making the airflow form a swirling flow are also installed on the upper surface of the flow guiding disk (40).

7. The anti-clogging diffusion membrane assembly for a microporous aerator according to claim 6, characterized in that: The outer wall of the magnetic sleeve (2063) is slidably sealed to the central through hole (401) of the guide plate (40); in the first position, the bottom edge of the magnetic sleeve (2063) closes the inlet of the exhaust groove (402) on the inner wall of the central through hole (401); in the second position, the magnetic sleeve (2063) rises so that its bottom edge passes over the inlet of the exhaust groove (402), thereby opening the air intake channel.

8. The anti-clogging diffusion membrane assembly for a microporous aerator according to claim 7, characterized in that: A sealing ring is provided between the magnetic sleeve (2063) and the central through hole (401).

9. A microporous aerator anti-clogging diffusion membrane assembly according to claim 4 or 5, characterized in that: The bottom of the threaded shaft (2062) is provided with a smooth shaft section (2062a) without threads; when the magnetic transmission member (206) rises to the second position, the threaded part of the threaded shaft (2062) is completely disengaged from the threaded seat (205), and the smooth shaft section (2062a) is located inside the threaded seat (205). At this time, the magnetic transmission member (206) only rotates without generating axial displacement.

10. A microporous aerator anti-clogging diffusion membrane assembly according to claim 1, characterized in that, The scraping assembly also includes a magnetic shaft (70). The upper housing (30) is provided with a retainer (301). A sleeve (302) is installed in the middle of the retainer (301). The magnetic shaft (70) is rotatably installed in the sleeve (302). Its top end passes through the diaphragm (50) and the top cover (80) and is connected to the scraper (90). A first permanent magnet (701) is provided on the outer periphery of its bottom end. A second permanent magnet (2064) is provided on the inner wall of the magnetic sleeve (2063) of the magnetic transmission component (206). The rotational motion of the magnetic sleeve (2063) is transmitted to the magnetic shaft (70) through the magnetic coupling between the first permanent magnet (701) and the second permanent magnet (2064).

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