Aeration equipment for sewage treatment with anti-blocking structure

Abstract

This invention discloses an aeration device for sewage treatment with an anti-clogging structure, relating to the field of sewage treatment technology. The aeration device includes a housing mechanism, which comprises a bottom box. An aeration assembly is disposed inside the bottom box. The aeration assembly includes an air chamber mechanism and a rotating column mechanism. The air chamber mechanism includes two chamber plates, with an outer frame and a unblocking component evenly and equidistantly connected between the two chamber plates. An air membrane is connected between the two chamber plates. Air cylinder mechanisms with corresponding unblocking components are evenly and equidistantly installed through the center of the air membrane surface. The air cylinder mechanism includes an annular connecting ring, which is embedded and fixed to the air membrane. Swing rods are evenly and equidistantly fixed in four directions within the connecting ring. A pull rope is fixedly connected between the outer middle of each swing rod and the air membrane. A pull strap is fixedly connected between adjacent swing rods. This aeration device for sewage treatment with an anti-clogging structure improves the safety during initial startup.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an aeration device for wastewater treatment with an anti-clogging structure. Background Technology

[0002] Wastewater treatment refers to the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse.

[0003] The activated sludge process is one of the most common biological treatment methods. Wastewater is mixed with activated sludge (containing a large number of microorganisms), which decompose the organic matter in the wastewater under aerobic conditions. The microbial community in the activated sludge, including bacteria and protozoa, works together; bacteria decompose organic matter, and protozoa feed on the bacteria. Through this ecological relationship, the organic matter in the wastewater is gradually decomposed and transformed. For example, in urban wastewater treatment plants, most of the organic matter removal is accomplished through the activated sludge process.

[0004] Sludge in the sludge tank often clogs the aeration holes, slowing down the efficiency of wastewater treatment.

[0005] Patent CN115367866B discloses an aerator with anti-clogging effect, comprising an internally hollow outer shell and a microporous head fixedly installed on the upper end of the outer shell. The microporous head is provided with a plurality of microporous structures for separating airflow. The bottom end of the outer shell has a communication port communicating with the interior of the outer shell. A support cylinder is fixedly installed in the middle of the outer shell, and the support cylinder is fixedly connected to the inner wall of the outer shell by a plurality of partitions arranged around the periphery of the support cylinder. The interval area between the partitions forms an airflow channel. A plurality of sealing plates are arranged around the upper end of the support cylinder, and one end of each sealing plate is hinged to the upper end of the support cylinder. The support cylinder contains a drive shaft, the upper end of which is movably connected to a sealing plate. The drive shaft moves up and down under the influence of a driving component. The downward-moving drive shaft drives several sealing plates into a sealing state, blocking the airflow channel. The upward-moving drive shaft drives several sealing plates into an open state, releasing the blockage of the airflow channel. A water bladder is fixed to the lower surface of each sealing plate. A pressure combination valve is located around the periphery of the outer shell, connected to the water bladder via a flexible hose. This improved aerator structure reduces the problem of external impurities clogging the micropores due to negative pressure when the blower is turned on or off.

[0006] In the above technical solution, the micropore structure on the micropore head is set vertically. However, the aeration equipment is usually placed at the bottom of the sludge tank. Although the suction problem caused by negative pressure can be controlled by the sealing plate when the blower is turned on or off, the problem of sludge embedding under gravity cannot be eliminated. Therefore, there is still a risk of blocking the aeration holes. There is an urgent need for an aeration equipment for sewage treatment with an anti-clogging structure to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide an aeration device for wastewater treatment with an anti-clogging structure to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an aeration device for sewage treatment with an anti-clogging structure, comprising a box mechanism, wherein the box mechanism includes a bottom box;

[0009] The bottom box is equipped with an aeration assembly.

[0010] The aeration assembly includes an air chamber mechanism and a rotating column mechanism;

[0011] The air chamber mechanism includes two chamber plates arranged vertically opposite each other. An outer frame and a drainage component are connected to the two chamber plates at equal intervals. An air membrane is connected between the two chamber plates. An air cylinder mechanism with a corresponding drainage component is installed through the center of the surface of the air membrane at equal intervals.

[0012] The air pump mechanism includes an annular connecting ring, which is embedded in and fixed to an air membrane. Inside the connecting ring, four swing rods are fixedly connected at equal intervals in four directions. A pull rope is fixedly connected between the outer middle part of each swing rod and the air membrane. A pull strap is fixedly connected between two adjacent swing rods. The ends of the four swing rods that extend outside the air membrane are commonly fitted with an annular perforated ring. A cross-shaped open gasket is fixedly fitted inside the perforated ring.

[0013] As a preferred embodiment of the present invention, a box top is provided above the bottom box by a support column, and an annular ring rail is fixedly connected to the middle of the lower surface of the box top, and a motor is slidably inserted into the ring rail.

[0014] A ring-shaped storage ring is fixedly connected to the lower surface of the lower storage plate.

[0015] The outer frame and the unblocking component are arranged alternately and are located on the inner and outer sides of the air membrane respectively. The unblocking component includes an inner frame, the end of which corresponds to the fixed connection plate. A cleaning column with an interlocking ring is fixedly connected to the middle of the outer side of the inner frame.

[0016] The outer end of the four-way swing arm contracts into a hole-like structure under the control of the hole ring, and the outer end of the cleaning column is adapted to be inserted into the hole-like structure formed by the outer end of the swing arm.

[0017] As a preferred embodiment of the present invention, the rotating column mechanism includes a tubular air tube, both ends of which are outwardly expanded into a conical tube structure. The upper end face of the air tube is fixedly supported by a support column, the output end of the motor is fixedly connected to the top of the tube, and the lower end face of the air tube passes through and is movably connected to the upper compartment plate through a bearing.

[0018] The trachea has perforated stirring plates that are evenly and equidistantly fixed to the outer side of the middle section.

[0019] Below the air pipe is a wheel fan assembly placed inside the air membrane.

[0020] The fan assembly includes a fan cylinder, and fan blades are fixedly connected to the outer side of the fan cylinder at equal and even intervals.

[0021] A connecting rod for support is fixedly connected between the lower end faces of the fan cylinder and the air pipe.

[0022] A toothed column is fixedly connected to the lower end of the fan cylinder, and a second gear is fixedly connected to the lower end of the toothed column.

[0023] The lower part of the aeration component is provided with an inner seat mechanism adapted to be installed in the bottom box;

[0024] The inner seat mechanism includes an inner seat that is adapted to the base box. Each of the four corners of the upper surface of the inner seat is fixedly connected to an adapter platform. The inner surface of the adapter platform is sloping, and the outer surface of the adapter platform fits into the base box.

[0025] The lower surface of the inner seat is fixedly connected to a first gear that meshes with the second gear, and the lower surface of the first gear is provided with a ring of resistance pads that fit against the lower inner wall of the base box.

[0026] The upper surface of the inner seat is provided with a first annular groove that fits and fits into the storage ring, and the lower inner wall of the first annular groove is provided with a second annular groove through the middle.

[0027] The inner arc wall of the second annular groove is recessed inward at the middle, forming a first column groove, and the outer arc wall of the second annular groove is recessed inward at the middle, forming a second column groove.

[0028] The first column groove is filled with first small columns arranged in a ring at equal intervals. Each first small column is hinged to a column plate by a spring. The end of the column plate away from the first small column is hook-shaped and adapted to hook a second small column. The second small columns are arranged in a ring at equal intervals inside the second column groove.

[0029] The toothed column passes through the lower compartment plate and compartment ring in sequence, and the toothed column is adapted to pass through the second ring groove.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] (1) An aeration device for sewage treatment with an anti-clogging structure, wherein the outer port of the air cylinder mechanism is sealed by the action of the hole ring, thereby directly isolating the sludge water. This avoids the phenomenon of back suction through the air cylinder mechanism when the fan assembly is started by the motor, thus improving the safety of the device during initial start-up.

[0032] (2) An aeration device for sewage treatment with an anti-clogging structure, wherein the first column and the column plate are automatically reconnected to the second column by means of a spring hinge, and the chamber ring is further moved along the first ring groove, thereby causing the aeration components to rotate and aerate inside the bottom box, thereby improving the overall aeration of the device.

[0033] (3) An aeration device for sewage treatment with an anti-clogging structure, wherein the air film will form a concave or convex structure according to the instability of internal and external pressure, and the outer frame and inner frame distributed on the inner and outer sides of the air film will control the excessive deformation of the air film, thereby protecting the air film during the operation of the device and improving the service life of the device.

[0034] (4) An aeration device for sewage treatment with an anti-clogging structure, by pulling the rope and deforming the surface of the air film, the outer end of the swing rod expands and further drives the hole ring to expand, thereby opening the cross-shaped opening pad to form an air hole, and gradually introducing the gas into the bottom box through the air cylinder mechanism to mix with the sludge water, thereby automatically opening the air cylinder mechanism after the wheel fan is started, improving the automation efficiency of the equipment.

[0035] (5) An aeration device for sewage treatment with an anti-clogging structure, wherein the rotation of the air pipe drives the stirring plate to further stir the sludge water inside the bottom box, and in conjunction with the revolution of the aeration components, it can comprehensively and effectively stir the sludge water inside the bottom box, and strengthen the mixing of sludge water and outside air through the upper port of the bottom box, thereby further improving the aeration efficiency.

[0036] (6) An aeration device for sewage treatment with an anti-clogging structure, wherein the outer end of the swing rod is correspondingly aggregated, and the smaller the outer end of the swing rod contracts, the closer it is to the cleaning column. The sludge water collected before the swing rod is completely closed is squeezed out through the cleaning column, thereby further improving the anti-clogging performance of the device. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the present invention;

[0038] Figure 2 This is a cross-sectional view of the present invention;

[0039] Figure 3 This is a schematic diagram of the housing mechanism of the present invention;

[0040] Figure 4 This is a top view schematic diagram of the inner seat mechanism assembly of the present invention;

[0041] Figure 5 This is a schematic diagram of the inner seat mechanism assembly of the present invention viewed from below;

[0042] Figure 6 This is a schematic diagram of the inner seat mechanism of the present invention;

[0043] Figure 7 This is a schematic diagram of the first gear of the present invention;

[0044] Figure 8 For the present invention Figure 7 Enlarged view of point A;

[0045] Figure 9 This is a schematic diagram of the air chamber mechanism of the present invention;

[0046] Figure 10 This is a schematic diagram of the unblocking component of the present invention;

[0047] Figure 11 This is a schematic diagram showing the position of the air cylinder mechanism of the present invention;

[0048] Figure 12 This is a schematic diagram of the air cylinder mechanism of the present invention;

[0049] Figure 13 This is a schematic diagram of the rotating column mechanism of the present invention;

[0050] Figure 14 This is a schematic diagram showing the position of the wheel fan assembly of the present invention.

[0051] In the diagram: 1. Box body mechanism; 101. Bottom box; 102. Box top; 103. Ring rail; 104. Motor; 2. Inner seat mechanism; 201. Inner seat; 202. Adaptor platform; 203. First gear; 204. Resistance pad; 205. First ring groove; 206. Second ring groove; 207. First column groove; 208. Second column groove; 209. First small column; 210. Column plate; 211. Second small column; 3. Air chamber mechanism; 301. Chamber ring; 302. Silo plate; 303. Outer frame; 304. Inner frame; 305. Cleaning column; 306. Air film; 4. Air pump mechanism; 401. Connecting ring; 402. Swing rod; 403. Pull rope; 404. Pull belt; 405. Perforated ring; 406. Cross-shaped opening pad; 5. Rotating column mechanism; 501. Air pipe; 502. Pipe top; 503. Stirring plate; 504. Fan cylinder; 505. Connecting rod; 506. Fan blade; 507. Gear column; 508. Second gear. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Example: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 9 , Figure 10 , Figure 11 , Figure 12 An aeration device for sewage treatment with an anti-clogging structure includes a box mechanism 1, wherein the box mechanism 1 includes a bottom box 101;

[0054] The bottom box 101 is equipped with an aeration assembly.

[0055] The aeration components include an air chamber mechanism 3 and a rotating column mechanism 5;

[0056] The air chamber mechanism 3 includes two chamber plates 302 arranged vertically opposite each other. An outer frame 303 and a drainage component are connected between the two chamber plates 302 at equal intervals. An air membrane 306 is connected between the two chamber plates 302. The air membrane 306 is made of elastic material. An air cylinder mechanism 4 with a corresponding drainage component is installed through the center of the surface of the air membrane 306 at equal intervals.

[0057] The air pump mechanism 4 includes an annular connecting ring 401, which is made of elastic material. The connecting ring 401 is embedded in and fixed to the air membrane 306. The connecting ring 401 is fixedly connected to four swing rods 402 at equal intervals in four directions. A pull rope 403 is fixedly connected between the middle outer side of each swing rod 402 and the air membrane 306. A pull strap 404 is fixedly connected between two adjacent swing rods 402. The pull strap 404 is made of elastic material. The ends of the four swing rods 402 that extend out of the air membrane 306 are commonly fitted with an annular perforated ring 405. A cross-shaped open pad 406 is fixedly fitted inside the perforated ring 405. The perforated ring 405 and the cross-shaped open pad 406 are made of elastic material.

[0058] Please see Figure 3 , Figure 9 , Figure 10 , Figure 11 The top of the bottom box 101 is supported by a support column and a box top 102 is mounted on it. A ring rail 103 is fixedly connected to the middle of the lower surface of the box top 102, and a motor 104 is slidably inserted into the ring rail 103.

[0059] A ring-shaped storage ring 301 is fixedly connected to the lower surface of the lower storage plate 302;

[0060] The outer frame 303 and the unblocking component are staggered and located on the inner and outer sides of the air membrane 306 respectively. The unblocking component includes an inner frame 304. The end of the inner frame 304 is fixedly connected to the compartment plate 302. A cleaning column 305 with an insert ring 401 is fixedly connected to the middle of the outer side of the inner frame 304.

[0061] The outer end of the four-way swing arm 402 contracts into a hole-like structure under the control of the hole ring 405, and the outer end of the cleaning column 305 is adapted to the hole-like structure formed by the outer end of the swing arm 402.

[0062] Please see Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 13 , Figure 14 The rotating column mechanism 5 includes a tubular air pipe 501. Both ends of the air pipe 501 are outwardly expanded into a conical structure. The upper end face of the air pipe 501 is fixedly supported by a support column and a pipe top 502 is mounted on it. The output end of the motor 104 is fixedly connected to the pipe top 502. The lower end face of the air pipe 501 passes through and is movably connected to the upper compartment plate 302 through a bearing.

[0063] A perforated stirring plate 503 is fixedly connected at equal intervals on the outer side of the middle part of the air pipe 501. When the air pipe 501 rotates, the stirring plate 503 rotates accordingly to stir the sludge water.

[0064] Below the air pipe 501 is a wheel fan assembly installed inside the air film 306.

[0065] The fan assembly includes a fan cylinder 504, and fan blades 506 are fixedly connected to the outer side of the fan cylinder 504 at equal intervals.

[0066] A connecting rod 505 for support is fixedly connected between the lower end faces of the fan cylinder 504 and the air pipe 501;

[0067] A gear 507 is fixedly connected to the lower end of the fan cylinder 504, and a second gear 508 is fixedly connected to the lower end of the gear 507.

[0068] The lower part of the aeration component is provided with an inner seat mechanism 2 that is adapted to be installed in the bottom box 101;

[0069] The inner seat mechanism 2 includes an inner seat 201 that is adapted to the bottom box 101. The four corners of the upper surface of the inner seat 201 are fixedly connected to the adapter platform 202. The inner surface of the adapter platform 202 is sloping, which is convenient to use in conjunction with the travel path of the aeration component. The outer surface of the adapter platform 202 fits into the bottom box 101.

[0070] The lower surface of the inner seat 201 is fixedly connected to the middle of the first gear 203, which meshes with the second gear 508. The lower surface of the first gear 203 is arranged in a ring with resistance pads 204 that fit against the lower inner wall of the base box 101. The resistance pads 204 are made of anti-slip material.

[0071] The upper surface of the inner seat 201 is provided with a first annular groove 205 that fits and is adapted to fit the storage ring 301, and the lower inner wall of the first annular groove 205 is provided with a second annular groove 206 that runs through the middle.

[0072] The inner arc wall of the second annular groove 206 is recessed inward in the middle of the first column groove 207, and the outer arc wall of the second annular groove 206 is recessed inward in the middle of the second column groove 208.

[0073] First small columns 209 are evenly and uniformly arranged in a ring inside the first column groove 207. Each first small column 209 is hinged to a column plate 210 by a spring. The end of the column plate 210 away from the first small column 209 is hook-shaped and adapted to hook a second small column 211. The second small columns 211 are evenly and uniformly arranged in a ring inside the second column groove 208.

[0074] The toothed column 507 passes through the lower compartment plate 302 and compartment ring 301 in sequence, and the toothed column 507 is adapted to pass through the second ring groove 206.

[0075] The working principle of this invention is as follows:

[0076] When not in operation, the air film 306 is depressed inward under the pressure of the sludge water inside the bottom box 101. At this time, the outer port of the air cylinder mechanism 4 is closed by the action of the hole ring 405, thereby directly isolating the sludge water. This avoids the phenomenon of back suction through the air cylinder mechanism 4 when the fan assembly is started by the motor 104, thus improving the safety of the equipment during initial start-up.

[0077] The starting of motor 104 drives the second gear 508 to rotate. The first gear 203 remains stable under the action of resistance pad 204. Through the meshing of the second gear 508 and the first gear 203, the second gear 508 rotates along the periphery of the first gear 203. The toothed column 507 slides along the second annular groove 206. When the toothed column 507 contacts the column plate 210, it can disengage the connection between the column plate 210 and the second small column 211. When the toothed column 507 leaves the column plate 210, it automatically returns to the connection with the second small column 211 under the action of the spring hinge between the first small column 209 and the column plate 210. This further drives the chamber ring 301 to move along the first annular groove 205, thereby causing the aeration component to rotate and aerate inside the bottom box 101, improving the comprehensiveness of aeration of the equipment.

[0078] The equipment draws air into the air film 306 through the air pipe 501 by rotating the fan assembly, and then discharges it through the air cylinder mechanism 4. Therefore, when the fan assembly starts and stops, the air film 306 will form a concave or convex structure according to the instability of the internal and external pressure. The outer frame 303 and inner frame 304 distributed on the inner and outer sides of the air film 306 will control the excessive deformation of the air film 306, thereby protecting the air film 306 during the operation of the equipment and improving the service life of the equipment.

[0079] When the fan assembly is started, air is injected into the air film 306 through the air pipe 501, causing the air film 306 to expand and form an outward convex structure. At this time, the pull of the rope 403 and the deformation of the surface of the air film 306 cause the outer end of the swing rod 402 to expand, and further drive the hole ring 405 to expand, thereby opening the cross-shaped opening pad 406 to form an air hole. The gas is gradually introduced into the bottom box 101 through the air cylinder mechanism 4 to mix with the sludge water, so that the air cylinder mechanism 4 opens automatically after the fan is started, improving the automation efficiency of the equipment.

[0080] The rotation of the air pipe 501 drives the stirring plate 503 to further stir the sludge water inside the bottom box 101. In conjunction with the revolution of the aeration components, the sludge water inside the bottom box 101 can be stirred comprehensively and effectively. The mixing of sludge water and outside air is enhanced through the upper port of the bottom box 101, further improving the aeration efficiency.

[0081] As the fan assembly slowly rotates until it stops, the internal and external pressure of the air film 306 is adjusted, causing the air film 306 to gradually change from an outward convex structure to an inward concave structure. During this process, the outer end of the swing rod 402 is correspondingly aggregated. The smaller the contraction of the outer end of the swing rod 402, the closer it is to the cleaning column 305. The cleaning column 305 squeezes out the sludge water that was collected before the swing rod 402 was completely closed, further improving the anti-clogging performance of the equipment.

[0082] 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.

Claims

1. An aeration device for sewage treatment with an anti-clogging structure, comprising a housing mechanism (1), wherein the housing mechanism (1) comprises a bottom box (101). An aeration assembly is installed inside the bottom box (101); Its features are: The aeration assembly includes an air chamber mechanism (3) and a rotating column mechanism (5); The air chamber mechanism (3) includes two chamber plates (302) arranged vertically opposite each other. An outer frame (303) and a drainage component are connected between the two chamber plates (302) at equal intervals. An air membrane (306) is connected between the two chamber plates (302). An air cylinder mechanism (4) with a corresponding drainage component is installed through the center of the surface of the air membrane (306) at equal intervals. The air pump mechanism (4) includes an annular connecting ring (401), which is embedded in and fixed to an air membrane (306). Inside the ring (401), swing rods (402) are fixedly connected in four directions at equal intervals. A pull rope (403) is fixedly connected between the outer side of the middle part of each swing rod (402) and the air membrane (306). A pull strap (404) is fixedly connected between two adjacent swing rods (402). One end of each swing rod (402) extending outside the air membrane (306) is commonly fitted with an annular perforated ring (405). A cross-shaped open pad (406) is fixedly fitted inside the perforated ring (405). An annular bin ring (301) is fixedly connected to the lower surface of the bin plate (302) on the lower side. The outer frame (303) and the unblocking component are staggered and located on the inner and outer sides of the air membrane (306). The unblocking component includes an inner frame (304), the end of which is fixedly connected to the compartment plate (302), and a cleaning column (305) with an insert ring (401) is fixedly connected to the middle of the outer side of the inner frame (304). The rotating column mechanism (5) includes a tubular air pipe (501), both ends of which are outwardly expanded into a conical structure. The upper end face of the air pipe (501) is fixedly supported by a support column with a pipe top (502). The lower end face of the air pipe (501) passes through and is movably connected to the upper compartment plate (302) through a bearing. The outer side of the middle part of the trachea (501) is fixedly connected with a stirring plate (503) with a perforated surface. Below the air pipe (501) is a wheel fan assembly placed inside the air film (306).

2. The aeration device for sewage treatment with an anti-clogging structure according to claim 1, characterized in that: The bottom box (101) is supported by a support column to form a box top (102). A ring-shaped rail (103) is fixedly connected to the middle of the lower surface of the box top (102). A motor (104) is slidably inserted into the ring rail (103). The output end of the motor (104) is fixedly connected to the top of the tube (502).

3. The aeration device for sewage treatment with an anti-clogging structure according to claim 2, characterized in that: The outer end of the four-way swing rod (402) contracts into a hole-like structure under the control of the hole ring (405), and the outer end of the cleaning column (305) is adapted to be inserted into the hole-like structure formed by the outer end of the swing rod (402).

4. The aeration device for sewage treatment with an anti-clogging structure according to claim 2, characterized in that: The fan assembly includes a fan cylinder (504), and fan blades (506) are fixedly connected to the outer side of the fan cylinder (504) at equal and uniform intervals. A connecting rod (505) for support is fixedly connected between the lower end faces of the fan cylinder (504) and the air pipe (501). The lower end of the fan cylinder (504) is fixedly connected to a toothed column (507), and the lower end of the toothed column (507) is fixedly connected to a second gear (508).

5. An aeration device for sewage treatment with an anti-clogging structure according to claim 4, characterized in that: The lower part of the aeration assembly is provided with an inner seat mechanism (2) adapted to be installed in the bottom box (101). The inner seat mechanism (2) includes an inner seat (201) adapted to the base box (101). The upper surface of the inner seat (201) is fixedly connected to the four corners of the four corners of the four corners of the four corners of the inner seat (201). The inner surface of the adapter (202) is sloping. The outer surface of the adapter (202) fits the base box (101). The lower surface of the inner seat (201) is fixedly connected to a first gear (203) that meshes with the second gear (508). The lower surface of the first gear (203) is provided with a ring of resistance pads (204) that fit against the lower inner wall of the bottom box (101).

6. The aeration device for sewage treatment with an anti-clogging structure according to claim 5, characterized in that: The upper surface of the inner seat (201) is provided with a first annular groove (205) that fits and fits into the storage ring (301), and a second annular groove (206) is provided through the lower inner wall of the first annular groove (205). The inner arc wall of the second annular groove (206) is recessed inward in the middle of the first column groove (207), and the outer arc wall of the second annular groove (206) is recessed inward in the middle of the second column groove (208). The first column groove (207) is filled with first small columns (209) arranged in a ring at equal intervals. Each first small column (209) is hinged to a column plate (210) by a spring. The end of the column plate (210) away from the first small column (209) is hook-shaped and adapted to hook a second small column (211). The second small columns (211) are arranged in a ring at equal intervals inside the second column groove (208). The toothed column (507) passes through the lower side of the bin plate (302) and bin ring (301) in sequence, and the toothed column (507) is adapted to pass through the second ring groove (206).

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