Sewage treatment aeration device

Abstract

The present invention relates to the field of sewage treatment, and discloses a sewage treatment aeration apparatus, which comprises an aeration pipe arranged in a treatment box and aeration heads arranged on the aeration pipe at intervals, and further comprises: a fixing unit arranged on a connector on the aeration pipe; the sealing unit is arranged in the fixed head; the cleaning unit is arranged in the aeration head, connected with the sealing unit and used for driving the cleaning unit to clean impurities in aeration holes in the aeration head in the moving process of the sealing unit, and an aeration membrane of the aeration head is made of TPU + graphene materials. And the aeration holes can be maintained in the normal operation process of the aeration equipment, so that the manpower and time cost is greatly saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, specifically to a sewage treatment aeration device. BACKGROUND

[0002] In the sewage treatment process, the aeration device is one of the key equipment, which mainly functions to introduce air into the sewage to provide necessary oxygen for the microorganisms in the sewage, so as to promote the decomposition and degradation of the organic matter in the sewage by the microorganisms, thereby achieving the purpose of purifying the sewage.

[0003] The existing device has the following shortcomings: when the aeration device stops working, the impurities in the sewage are easy to flow back into the inside of the aeration head through the aeration holes on the aeration head, block the aeration holes, and it is very difficult to clean these blocked impurities, which requires a lot of manpower and time, and even the aeration head may need to be replaced, further increasing the operating cost.

[0004] Therefore, the present application proposes a sewage treatment aeration device to solve the above problems. SUMMARY

[0005] The present application aims to provide a sewage treatment aeration device to solve the above problems that when the aeration device stops working, the impurities in the sewage are easy to flow back into the inside of the aeration head through the aeration holes on the aeration head, block the aeration holes, and it is very difficult to clean these blocked impurities, which requires a lot of manpower and time, and even the aeration head may need to be replaced, further increasing the operating cost.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a sewage treatment aeration device, comprising an aeration pipe arranged inside a treatment tank and an aeration head arranged at intervals on the aeration pipe, further comprising: A fixing unit is arranged on a connecting head on the aeration pipe, used to fix the fixing head at the lower end of the aeration head to the aeration pipe; A sealing unit is arranged inside the fixed head, used to seal the inside of the fixed head when the aeration device is not working; A cleaning unit is arranged inside the aeration head and connected to the sealing unit, used to drive the cleaning unit to clean the impurities in the aeration holes on the aeration head during the movement of the sealing unit.

[0007] The fixing unit comprises: An outer ring is fixed on the connecting head, used to connect components; A top ring is fixed at the lower end of the fixed head; A limiting groove is circularly arranged on the outer side of the top ring; A fixing member is arranged on the outer ring and connected to the limiting groove, used to fixedly connect the top ring and the outer ring.

[0008] The fixing member comprises: A connecting lug is arranged on the outer side of the outer ring; A connecting shaft is arranged on the connecting lug; A limiting block is sleeved on the connecting shaft and clamped on the limiting groove, and is used for fixing the top ring inserted into the inner part of the outer ring; A rotating plate is arranged on the side of the limiting block away from the limiting groove, and is used for adjusting the installation position of the limiting block; An insert is inserted on the connecting lug, and is used for fixing the rotating plate with the connecting lug after adjustment, and the connecting lug is provided with an insertion slot for fixing the insert.

[0009] The sealing unit comprises: A support member is arranged in the inner part of the fixing head, and is used for supporting the sealing member; A sealing member is arranged on the support member, and is used for sealing the inner part of the fixing head.

[0010] The support member comprises: A fixing support is fixed on the inner wall of the fixing head; A support disc is fixed on the fixing support; A support rod is arranged on the support disc, and is used for supporting the sealing member.

[0011] The sealing member comprises: A sealing plug is fixed on the lower end of the support rod; A pushing frame is sleeved on the support rod; A movable plug is fixed on the lower end of the pushing frame and is sleeved on the outer side of the sealing plug; An elastic member is sleeved on the support rod and is located between the support disc and the pushing frame; The lower end of the movable plug is fixed with a limiting ring, and the inner part of the fixing head is provided with an abutting block for limiting the upward movement distance of the limiting ring.

[0012] The cleaning unit comprises: A lifting rod is fixed at an equal angle on the upper end of the pushing frame; A transmission member is arranged on the lifting rod, and is used for transmitting the kinetic energy of the pushing frame; A turning member is arranged in the inner part of the aeration head and is connected with the transmission member; A cleaning member is arranged on the turning member and is connected with the aeration plate on the aeration head, and is used for cleaning the impurities accumulated in the aeration hole.

[0013] The transmission member comprises: A rack is mounted on the lifting rod; The mounting bracket is fixed inside the aeration head; A rotating shaft is mounted on the fixed frame; The first gear is fixed on the rotating shaft and meshes with the rack.

[0014] The steering component includes: The worm gear is fixed on the rotating shaft; The mounting base is fixed inside the aeration head; A drive shaft is mounted on the mounting base; The worm gear is fixed on the drive shaft and meshes with the worm wheel. The second gear is fixed to the upper end of the transmission shaft; A toothed ring is disposed inside the aeration head and meshes with the second gear. The aeration head has a support leg inside for supporting the toothed ring, and the toothed ring has a sliding groove for the support leg to slide.

[0015] The cleaning component includes: The cleaning plate, with a V-shaped structure, is fixed to the outside of the toothed ring and its top is in contact with the inner wall of the aeration plate. A cleaning brush, fixed at intervals on the cleaning plate and extending into the aeration holes, is used to clean impurities remaining inside the aeration holes.

[0016] Compared with the prior art, the beneficial effects of the present invention are: When the aeration equipment stops working, the sealing unit of this invention can seal the inside of the fixed head. In the sewage treatment environment, sewage contains a large number of impurities, suspended solids and microorganisms. Without effective sealing measures, these substances can easily backflow into the aeration head through the aeration holes, causing blockage. The sealing unit effectively prevents impurities from backflowing, protects the internal structure of the aeration head, and extends the service life of the aeration head. The cleaning unit is connected to the sealing unit. During the movement of the sealing unit, it can automatically drive the cleaning unit to clean the impurities in the aeration holes on the aeration head. This automatic cleaning mechanism does not require additional manual intervention and can complete the maintenance of the aeration holes during the normal operation of the aeration equipment, greatly saving manpower and time costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure in one embodiment of the present invention; Figure 2 This is a top view of the structure in one embodiment of the present invention; Figure 3This is a schematic diagram of the aeration device in one embodiment of the present invention; Figure 4 This is a schematic diagram of the connection between the aeration pipe and the aeration head in one embodiment of the present invention; Figure 5 This is a cross-sectional structural schematic diagram of one embodiment of the present invention; Figure 6 This is a schematic diagram of the structure for fixing the aeration head and the aeration pipe in one embodiment of the present invention; Figure 7 This is a schematic diagram of the connection between the cleaning unit and the sealing unit in one embodiment of the present invention; Figure 8 This is a schematic diagram of the cleaning unit in one embodiment of the present invention; Figure 9 This is a schematic diagram of the structure at the bottom of the cleaning unit in one embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of a fixed unit explosion in one embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the fixing unit in one embodiment of the present invention; Figure 12 This is a schematic diagram of the connection between the transmission component and the push frame in one embodiment of the present invention; Figure 13 This is a schematic diagram of the connection between the steering component and the transmission component in one embodiment of the present invention; Figure 14 for Figure 9 Enlarged structural diagram of section A in the middle.

[0018] In the diagram: 1. Treatment box; 2. Air inlet pipe; 3. Aeration pipe; 31. Connector; 4. Aeration head; 41. Fixing head; 411. Abutment block; 42. Aeration plate; 4201. Aeration hole; 5. Fixing unit; 51. Outer ring; 52. Top ring; 53. Limiting groove; 54. Fixing component; 541. Connecting ear; 54101. Slot; 542. Connecting shaft; 543. Rotating plate; 544. Limiting block; 545. Insert; 6. Sealing unit; 61. Fixing bracket; 62. 63. Support plate; 64. Support rod; 65. Sealing plug; 66. Movable plug; 67. Limiting ring; 68. Push frame; 69. Lifting rod; 70. Elastic element; 71. Cleaning unit; 72. Rack; 73. Rotating shaft; 74. First gear; 75. Fixed frame; 76. Worm gear; 77. Worm; 78. Drive shaft; 79. Mounting seat; 70. Second gear; 710. Gear ring; 7101. Support leg; 71001. Slide groove; 711. Cleaning plate; 712. Cleaning brush. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-14 This invention provides a technical solution: a sewage treatment aeration device, comprising an aeration pipe 3 disposed inside a treatment tank 1 and aeration heads 4 spaced apart on the aeration pipe 3, an air inlet pipe 2 disposed on the aeration pipe 3, the air inlet pipe 2 passing through the treatment tank 1 and connected to external aeration equipment, and further comprising: a fixing unit 5 disposed on a connector 31 on the aeration pipe 3, used to fix the fixing head 41 at the lower end of the aeration head 4 to the aeration pipe 3; a sealing unit 6 disposed inside the fixing head 41, used to seal the inside of the fixing head 41 when the aeration equipment is not working; and a cleaning unit 7 disposed inside the aeration head 4 and connected to the sealing unit 6, used to drive the cleaning unit 7 to clean impurities in the aeration holes 4201 on the aeration head 4 during the movement of the sealing unit 6.

[0021] It should be noted that during operation, the fixing units 5 are installed one by one on the connectors 31 at the upper end of the aeration pipe 3. Then, the fixing head 41 is inserted into the interior of the fixing unit 5, and the fixing head 41 is fixed to the connector 31 through the fixing unit 5. Then, the assembly of the aeration heads 4 is completed one by one. Then, the aeration equipment connected to the outside of the air inlet pipe 2 is opened, and the gas enters the fixing head 41 from the aeration pipe 3. At this time, the gas pushes the sealing unit 6 upward, opening the sealing unit 6 and entering the sewage inside the treatment tank 1 through the aeration hole 4201. This provides the necessary oxygen for the microorganisms in the sewage to promote the decomposition and degradation of organic matter in the sewage by the microorganisms, thereby achieving the purpose of purifying the sewage. During the upward movement of the sealing unit 6, the cleaning unit 7 will rotate inside the aeration head 4, cleaning the impurities attached to the aeration hole 4201. When the aeration equipment stops working, the sealing unit 6 can seal the inside of the fixed head 41. In the sewage treatment environment, sewage contains a large number of impurities, suspended solids and microorganisms. Without effective sealing measures, these substances can easily backflow into the aeration head 4 through the aeration holes 4201, causing blockage of the aeration holes 4201. The presence of the sealing unit 6 effectively prevents the backflow of impurities, protects the internal structure of the aeration head 4, and extends the service life of the aeration head 4. The cleaning unit 7 is connected to the sealing unit 6. During the movement of the sealing unit 6, it can automatically drive the cleaning unit 7 to clean the impurities in the aeration holes 4201 on the aeration head 4. This automatic cleaning mechanism does not require additional manual intervention and can complete the maintenance of the aeration holes 4201 during the normal operation of the aeration equipment, which greatly saves manpower and time costs.

[0022] In practical implementation, the aeration membrane of aeration head 4 is made of TPU + graphene material with a mass ratio of 95:5-90:10. This ratio ensures that the composite material combines the flexibility and elasticity of TPU with the excellent properties of graphene. Simultaneously, the uniform coating of graphene significantly improves the surface properties and mechanical strength of the material: when the internal pressure of aeration head 4 is lower than the external liquid pressure, the aeration holes 4201 are closed, preventing backflow of liquid; when the internal pressure of aeration head 4 exceeds the external liquid pressure, the flexible substrate deforms, causing the micropores to open, allowing gas to pass smoothly and forming microbubbles; when the aeration holes 4201 become blocked, the pressure inside the membrane tube can be instantly increased, causing the membrane tube to expand and destroy the blockage structure, achieving self-cleaning in conjunction with airflow.

[0023] In one embodiment, the fixing unit 5 includes: an outer ring 51, fixed on the connector 31 for connecting components; a top ring 52, fixed on the lower end of the fixing head 41; a limiting groove 53, arc-shaped and formed on the outer side of the top ring 52; and a fixing member 54, disposed on the outer ring 51 and connected to the limiting groove 53, for fixing the top ring 52 and the outer ring 51 together.

[0024] This design is for reference. Figure 10 When installing the aeration head 4, simply align the top ring 52 with the outer ring 51, then press down on the aeration head 4 so that the top ring 52 is inserted into the inner part of the outer ring 51. At this time, the position of the limiting groove 53 corresponds to the position of the fixing part 54. Then, by adjusting the fixing part 54, the fixing part 54 is snapped into the limiting groove 53, thus completing the fixing of the top ring 52 and the outer ring 51, and completing the assembly of the aeration head 4. This installation method does not require complicated tools or cumbersome steps, and operators can quickly and easily complete the installation of the aeration head 4. When it is necessary to maintain, replace or clean the aeration head 4, operators can easily complete the relevant operations without using complicated tools or spending a lot of time, which improves work efficiency and reduces the impact of equipment shutdown for maintenance on the sewage treatment process.

[0025] In one embodiment, the fixing member 54 includes: a connecting ear 541 disposed on the outer side of the outer ring 51; a connecting shaft 542 disposed on the connecting ear 541; a limiting block 544 sleeved on the connecting shaft 542 and engaged in the limiting groove 53, used to fix the top ring 52 inserted into the outer ring 51; a rotating plate 543 disposed on the side of the limiting block 544 away from the limiting groove 53, used to adjust the installation position of the limiting block 544; and a plug 545 inserted into the connecting ear 541, used to fix the adjusted rotating plate 543 to the connecting ear 541, wherein the connecting ear 541 has a slot 54101 for fixing the plug 545.

[0026] This design is for reference. Figure 10 ,as well as Figure 11 When installing the aeration head 4, the operator first inserts the top ring 52 into the outer ring 51, so that the limiting groove 53 is inserted into the designated installation position. Then, the operator presses down on the rotating plate 543, so that the limiting block 544 rotates along the connecting shaft 542. Then, the limiting block 544 is engaged in the limiting groove 53, so that the limiting block 544 fixes the top ring 52 inside the outer ring 51. Then, the plug 545 is inserted into the slot 54101 to restrict the position of the limiting block 544, so that the top ring 52 can be stably fixed inside the outer ring 51, thereby ensuring the stability of the connection between the aeration head 4 and the aeration pipe 3.

[0027] In one embodiment, the sealing unit 6 includes: a support member disposed inside the fixing head 41 for supporting the sealing component; and a sealing member disposed on the support member for sealing the interior of the fixing head 41.

[0028] This design is for reference. Figure 12 ,as well as Figure 13When the aeration equipment is not working, the sealing element set on the support can fit tightly against the inner wall of the fixed head 41, forming a reliable sealing barrier to prevent impurities from accumulating in the aeration head 4 and clogging the aeration holes 4201, thus ensuring the normal ventilation function of the aeration head 4 during subsequent use. When the aeration equipment is working, the gas flows from the bottom of the connector 31 into the fixed head 41, and the air pressure pushes the sealing element upward, opening the sealing element, and the gas flows from the fixed head 41 into the aeration holes 4201.

[0029] In one embodiment, the support includes: a fixed bracket 61 fixed to the inner wall of the fixed head 41; a support plate 62 fixed to the fixed bracket 61; and a support rod 63 disposed on the support plate 62 for supporting the seal.

[0030] This design is for reference. Figure 12 The fixed bracket 61 is fixed on the inner wall of the fixed head 41, providing basic support for the entire support component. The support plate 62 is fixed at the center of the fixed bracket 61, and the support plate 62 is aligned with the axis of the fixed head 41. The support rod 63 is fixed on the support plate 62, providing stable installation and extrusion for the seal, so that the seal can effectively seal each part of the fixed head 41.

[0031] In one embodiment, the sealing element includes: a sealing plug 64 fixed to the lower end of the support rod 63; a pusher 66 sleeved on the support rod 63; a movable plug 65 fixed to the lower end of the pusher 66 and sleeved on the outside of the sealing plug 64; and an elastic element 68 sleeved on the support rod 63 and located between the support plate 62 and the pusher 66. The lower end of the movable plug 65 is fixed with a limit ring 651, and the interior of the fixed head 41 is provided with an abutment block 411 for limiting the upward movement distance of the limit ring 651. The elastic element 68 is made of a damped spring or an elastic pad.

[0032] This design is for reference. Figure 12The sealing plug 64 is fixed to the lower end of the support rod 63. The movable plug 65 is sleeved on the outside of the sealing plug 64 and fits tightly with the sealing plug 64 to form a whole, sealing the inside of the fixed head 41. When gas enters from below the movable plug 65, it will squeeze the movable plug 65 upward, causing the movable plug 65 to separate from the sealing plug 64. The gas flows into the interior of the aeration head 4 through the gap between the sealing plug 64 and the movable plug 65. When the aeration equipment stops working, the gas stops flowing into the interior of the fixed head 41. During delivery, under the action of the elastic element 68, the pusher 66 will drive the movable plug 65 to move downward, so that the movable plug 65 fits tightly against the sealing plug 64, ensuring that the movable plug 64 and the sealing plug 65 can effectively seal the inside of the fixed head 41. The limiting ring 651 at the lower end of the movable plug 65 and the abutment block 411 inside the fixed head 41 play a limiting role. The limiting ring 651 restricts the upward movement distance of the movable plug 65, preventing the movable plug 65 from moving too upward under the action of the elastic element 68 and leaving the sealing position.

[0033] In one embodiment, the cleaning unit 7 includes: a lifting rod 67, which is fixed at an equal angle to the upper end of the push frame 66; a transmission component, which is disposed on the lifting rod 67 and is used to transmit the kinetic energy of the push frame 66; a steering component, which is disposed inside the aeration head 4 and connected to the transmission component; and a cleaning component, which is disposed on the steering component and connected to the aeration plate 42 on the aeration head 4 and is used to clean the impurities accumulated in the aeration holes 4201.

[0034] This design is for reference. Figures 5-8 When the aeration head 4 is working, the internal pressure of the fixed head 41 will push the push frame 66 upward, which in turn will drive the lifting rod 67 at the upper end of the push frame 66 to move upward. The lifting rod 67 drives the transmission component to move. Under the action of the steering component, the up and down movement of the lifting rod 67 is converted into the rotational movement of the cleaning component, so that the cleaning component can clean the aeration holes 4201 on the aeration plate 42. This linkage design makes the cleaning process automatic without additional power source or manual intervention, realizing the automation of the cleaning operation and improving the cleaning efficiency.

[0035] In one embodiment, the transmission component includes: a rack 71 disposed on the lifting rod 67; a fixing frame 74 fixed inside the aeration head 4; a rotating shaft 72 disposed on the fixing frame 74; and a first gear 73 fixed on the rotating shaft 72 and meshing with the rack 71.

[0036] This design is for reference. Figure 12The rack 71 is mounted on the lifting rod 67, and the first gear 73 is fixed on the rotating shaft 72 and meshes with the rack 71. When the lifting rod 67 moves linearly under the drive of the push frame 66, the rack 71 moves accordingly and generates relative motion with the first gear 73. The first gear 73 rotates under the action of the rack 71, thereby converting the linear motion of the lifting rod 67 into the rotational motion of the rotating shaft 72. The power transmission efficiency is high, which can ensure that the cleaning unit 7 obtains sufficient power in time for cleaning work.

[0037] In one embodiment, the steering component includes: a worm gear 75 fixed on a rotating shaft 72; a mounting base 78 fixed inside an aeration head 4; a drive shaft 77 disposed on the mounting base 78; a worm 76 fixed on the drive shaft 77 and meshing with the worm gear 75; a second gear 79 fixed to the upper end of the drive shaft 77; and a gear ring 710 disposed inside an aeration head 4 and meshing with the second gear 79. The aeration head 4 has a support leg 7101 inside for supporting the gear ring 710, and the gear ring 710 has a sliding groove 71001 for sliding the support leg 7101.

[0038] This design is for reference. Figure 13 ,as well as Figure 14 The rotating shaft 72 drives the worm gear 75 to rotate, and the worm gear 75 meshes with the worm 76, transmitting power to the transmission shaft 77 to achieve the first steering, changing the rotation direction of the rotating shaft 72 to the rotation direction of the transmission shaft 77. Then, the second gear 79 at the upper end of the transmission shaft 77 meshes with the gear ring 710 to perform the second steering, further changing the direction of power transmission, and finally transmitting power to the cleaning component. This multi-stage steering design can flexibly transmit power in the required direction to meet the requirements of the cleaning component to perform cleaning work at different positions and angles.

[0039] In one embodiment, the cleaning component includes: a cleaning plate 711, which is designed in a V-shape and fixed to the outside of the toothed ring 710, with its top end in contact with the inner wall of the aeration plate 42; and a cleaning brush 712, which is fixed at intervals on the cleaning plate 711 and extends into the interior of the aeration hole 4201, for cleaning the impurities remaining inside the aeration hole 4201.

[0040] This design is for reference. Figures 5-9 ,as well as Figure 13The cleaning plate 711 has a V-shaped structure and is fixed to the outside of the toothed ring 710. Driven by the toothed ring 710, the cleaning plate 711 can move in a circular motion along the inner wall of the aeration plate 42 to clean the inner wall of the aeration plate 42, effectively removing impurities attached to the inner wall and preventing impurities from accumulating and affecting the aeration effect. The cleaning brush 712 is fixed at intervals on the cleaning plate 711 and extends into the aeration hole 4201, which can directly clean the impurities remaining in the aeration hole 4201. It can brush away dirt, algae and other impurities in the hole, ensuring that the aeration hole 4201 is unobstructed, so that the gas can enter the water evenly and fully, and improve the aeration effect.

[0041] Furthermore, if the embodiments involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relation to the specification. The significance or implied number of the indicated technical features is not specified. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

Claims

1. A sewage treatment aeration device comprising an aeration pipe (3) arranged inside a treatment tank (1) and aeration heads (4) arranged at intervals on the aeration pipe (3), characterized in that, Also include: The fixed unit (5) is arranged on the connecting head (31) of the aeration pipe (3), and is used for fixing the fixed head (41) at the lower end of the aeration head (4) and the aeration pipe (3); The sealing unit (6) is arranged in the fixed head (41), and is used for sealing the inside of the fixed head (41) when the aeration equipment is not working; The cleaning unit (7) is arranged in the aeration head (4) and connected with the sealing unit (6), and is used for cleaning the impurities in the aeration hole (4201) on the aeration head (4) during the movement of the sealing unit (6).

2. A sewage treatment aeration device according to claim 1, characterised in that: The fixed unit (5) comprises: The outer ring (51) is fixed on the connecting head (31) and is used for connecting components; The top ring (52) is fixed at the lower end of the fixed head (41); The limiting groove (53) is circularly arranged on the outer side of the top ring (52); The fixing part (54) is arranged on the outer ring (51) and connected with the limiting groove (53), and is used for fixedly connecting the top ring (52) and the outer ring (51).

3. A sewage treatment aeration device according to claim 2, characterised in that: The fixing part (54) comprises: The connecting lug (541) is arranged on the outer side of the outer ring (51); The connecting shaft (542) is arranged on the connecting lug (541); The limiting block (544) is sleeved on the connecting shaft (542) and clamped on the limiting groove (53), and is used for fixing the top ring (52) inserted into the inside of the outer ring (51); The rotating plate (543) is arranged on the side of the limiting block (544) away from the limiting groove (53), and is used for adjusting the installation position of the limiting block (544); The plug-in part (545) is inserted into the connecting lug (541), and is used for fixing the rotating plate (543) after adjustment and the connecting lug (541), and the connecting lug (541) is provided with a plug-in groove (54101) for fixing the plug-in part (545).

4. A sewage treatment aeration device according to claim 1, wherein: The sealing unit (6) comprises: The support part is arranged in the fixed head (41) and is used for supporting the sealing part; The sealing part is arranged on the support part and is used for sealing the inside of the fixed head (41).

5. A sewage treatment aeration device according to claim 4, wherein: The support part comprises: The fixed support (61) is fixed on the inner wall of the fixed head (41); The support disc (62) is fixed on the fixed support (61); The support rod (63) is arranged on the support disc (62) and is used for supporting the sealing part.

6. A sewage treatment aeration device according to claim 5, characterised in that: The sealing part comprises: The sealing plug (64) is fixed at the lower end of the support rod (63); The push frame (66) is sleeved on the support rod (63); The movable plug (65) is fixed at the lower end of the push frame (66) and is sleeved on the outer side of the sealing plug (64); The elastic part (68) is sleeved on the support rod (63) and located between the support disc (62) and the push frame (66); The lower end of the movable plug (65) is fixed with a limiting ring (651), and the inside of the fixed head (41) is provided with an abutting block (411) for limiting the upward movement distance of the limiting ring (651).

7. A sewage treatment aeration device according to claim 6, characterised in that: The cleaning unit (7) comprises: a lifting rod (67) fixed at an upper end of the pushing frame (66) at equal angles; a transmission member arranged on the lifting rod (67) and used for transmitting kinetic energy of the pushing frame (66); a turning member arranged in the aeration head (4) and connected with the transmission member; a cleaning member arranged on the turning member and connected with an aeration plate (42) on the aeration head (4) and used for cleaning impurities accumulated in an aeration hole (4201).

8. A sewage treatment aeration device according to claim 7, characterised in that: The transmission member comprises: a rack (71) arranged on the lifting rod (67); a fixing frame (74) fixed in the aeration head (4); a rotating shaft (72) arranged on the fixing frame (74); a first gear (73) fixed on the rotating shaft (72) and meshingly connected with the rack (71).

9. A sewage treatment aeration device according to claim 8, characterised in that: The turning member comprises: a worm wheel (75) fixed on the rotating shaft (72); a mounting seat (78) fixed in the aeration head (4); a transmission shaft (77) arranged on the mounting seat (78); a worm (76) fixed on the transmission shaft (77) and meshingly connected with the worm wheel (75); a second gear (79) fixed on an upper end of the transmission shaft (77); a tooth ring (710) arranged in the aeration head (4) and meshingly connected with the second gear (79); The aeration head (4) is internally provided with a supporting leg (7101) used for supporting the tooth ring (710), and the tooth ring (710) is provided with a sliding groove (71001) for sliding of the supporting leg (7101).

10. A sewage treatment aeration device according to claim 9, characterised in that: The cleaning member comprises: a cleaning plate (711) fixed on an outer side of the tooth ring (710) in a V-shaped structure and abutting against an inner wall of the aeration plate (42) at a top portion; a cleaning brush (712) fixed on the cleaning plate (711) at intervals and extending into the aeration hole (4201) and used for cleaning impurities remaining in the aeration hole (4201).

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