Pneumatic system of secondary sedimentation tank

Abstract

The invention relates to the technical field of sewage treatment, in particular to a pneumatic system of a secondary sedimentation tank, which comprises an oiling device matched with an air compressor, a slag removal device and a cleaning system. The oiling device comprises a first part and a second part, the first part is matched with each other during use and separated from each other when not used, interference with the rotating cage is avoided, and the oiling device is used for oiling lubricating grease to the rotating cage driving bearing; the slag removal device is used for agitating air through an air compressor and can form outwards-radiating ripples on the water surface, so that the slag removal device is matched with a slag skimmer and a scum hopper, and scum is convenient to remove; the air compressor is matched with the air path bridge to supply air to the cleaning device, and under the action of air force, the cleaning brush rotates and cleans the algae at the overflow weir, so that stable operation of the secondary sedimentation tank is ensured. Based on an existing secondary sedimentation tank structure, the pneumatic system is arranged, use and functions of the secondary sedimentation tank are further improved and optimized, and the pneumatic system has positive effects on facilitating production operation and ensuring stable operation of the secondary sedimentation tank.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly relates to an air power system for a secondary sedimentation tank. Background Art

[0002] In the process of biological sewage treatment, a secondary sedimentation tank is required. The structure of the secondary sedimentation tank is relatively mature in the existing biological treatment system. On the one hand, it precipitates sludge to realize the reflux of sludge and the discharge of excess sludge. On the other hand, it also transports the treated supernatant to the backend to facilitate the further treatment of sewage.

[0003] The secondary sedimentation tank plays an important role in the sewage treatment system, and its stable operation is crucial. During the actual operation of the secondary sedimentation tank, the maintenance of equipment and the cleaning of the tank body are both crucial. For the maintenance of equipment, for the sludge suction machine of the secondary sedimentation tank, after running for a period of time, multiple parts of its drive mechanism need to be regularly lubricated and maintained. The grease filling port of the rotary cage drive bearing is located below the bridge and inside the rotary cage. When replacing the grease, it is necessary to empty and stop the operation of the secondary sedimentation tank, and use the method of erecting a scaffolding and manual filling, which is time-consuming and laborious, and also affects the stable progress of production. During the operation of the secondary sedimentation tank, due to the rich nutrients in the water body, duckweeds and algae often grow, affecting the stable operation of the tank body and the effluent quality. Therefore, the cleaning of duckweeds, floating scum and algae is also particularly important. However, the existing scum skimming mechanism of the sludge suction machine has limited ability to remove floating scum, and the removal effect of duckweeds and floating scum near the center of the tank body is not good. At the same time, for the algae growing and adhering to the wall of the effluent channel, manual cleaning is dangerous and time-consuming. Using a cleaning robot to remove it, the equipment cost is high during the process, and it is not convenient for maintenance in production.

[0004] Therefore, the present invention proposes an air power system for a secondary sedimentation tank, which combines a refueling device, a slag removal device and a cleaning system to further improve the functions of the existing secondary sedimentation tank, and has a positive effect on facilitating production and maintaining the stable operation of the secondary sedimentation tank. Summary of the Invention

[0005] The purpose of the present invention is to provide an air power system for a secondary sedimentation tank to solve the problems that the functions of the existing secondary sedimentation tank are not perfect, which brings inconvenience to use and stable operation.

[0006] To achieve the above purpose, the present invention adopts the following technical scheme: An air power system for a secondary sedimentation tank is arranged based on a single-pipe sludge suction machine secondary sedimentation tank, and includes a refueling device, a slag removal device and a cleaning system;

[0007] The refueling device, the slag removal device and the cleaning system are all coordinated with an air compressor;

[0008] The described fueling device is matched with the stationary part of the driving mechanism of the single-pipe sludge suction machine, and includes a first part and a second part. The first part is fixedly connected to the lower part of the bridge, and the second part is fixedly communicated with the fueling port on the stationary part. When the first part and the second part are not matched, there is a channel for the rotating cage to rotate between them. When the air compressor drives the first part and the second part to be matched, grease is filled into the driving bearing of the sludge suction machine rotating cage through the pneumatic grease gun, the first part, the second part, and the fueling port.

[0009] The described slag removal device is annular and arranged outside the rotating cage. The upper part of the slag removal device is fixedly connected to the lower part of the bridge. The slag removal device is arranged on the surface layer below the liquid level and does not interfere with the single-pipe sludge suction machine in space. The upper part of the slag removal device is connected to the air compressor, and air outlet holes are evenly distributed around the slag removal device.

[0010] The described cleaning system includes an air bridge and a cleaning device. The cleaning device is arranged relying on the skimmer. The cleaning device includes a first cleaning mechanism and a second cleaning mechanism. The first cleaning mechanism and the second cleaning mechanism are respectively arranged on the outside of the overflow weir and the inside of the water outlet channel. Cleaning brushes are arranged in both the first cleaning mechanism and the second cleaning mechanism. The cleaning brushes rotate driven by the air power of the air compressor. An air bridge is arranged below the bridge, and the air circuit of the air compressor is connected to the cleaning device through the air bridge.

[0011] Further, the first part of the fueling device is located outside the rotating cage and includes a cylinder. The cylinder is connected to the air compressor, the front end of the cylinder is connected to a docking head, and the docking head is connected to an oil pipeline. The oil pipeline extends above the bridge and is matched with the pneumatic grease gun. The second part is located inside the rotating cage and includes a fixed part and a rotating part. The fixed part is fixedly connected to the stationary part, and an oil injection hole is penetrated in the fixed part. The oil injection hole is matched with the fueling port. The rotating part is rotationally and sealingly arranged inside the fixed part. An oil injection channel matched with the oil injection hole is arranged at the front end of the rotating part, and a docking groove matched with the docking head is arranged at the rear end of the rotating part.

[0012] Further, a counterweight ball is connected below the docking groove. When the docking head is matched with the docking groove, the oil injection hole is communicated with the oil injection channel. When the docking head is separated from the docking groove, under the action of the counterweight ball, the oil injection hole is separated from the oil injection channel.

[0013] Further, steel cable connection parts and skimmer connection parts are respectively arranged on both sides of the rotating cage. Gaps are formed between the steel cable connection parts and the skimmer connection parts and the rotating cage, and the slag removal device is arranged in these gaps.

[0014] Furthermore, the air bridge is located between the lower part of the bridge and the upper part of the rotating part of the driving mechanism, and includes an annular groove cover and an annular buckle cover. The annular groove cover is fixedly connected to the lower part of the bridge. The annular buckle cover is buckled upside down in the annular groove cover, and a rotating seal is arranged between the annular groove cover and the annular buckle cover. Pressing plates are fixedly connected to the inner and outer rings of the annular groove cover; a cavity is formed between the annular groove cover and the annular buckle cover, and the cavity is communicated with the air compressor through the annular groove cover, and the cavity is communicated with the cleaning device through the annular buckle cover.

[0015] Furthermore, the air outlet on the annular buckle cover is connected to a hard metal pipe, the other end of the metal pipe is fixedly connected to the skimmer, and the metal pipe is communicated with the cleaning device through a flexible air pipe.

[0016] Furthermore, both the first cleaning mechanism and the second cleaning mechanism include a mounting frame, and the mounting frame is matched with the end of the skimmer; the lower part of the mounting frame is connected to a mounting box, a rotary joint is fixedly arranged in the mounting box, the rotating end of the rotary joint is communicated with an air chamber, tangential air outlet holes are arranged on the outer periphery of the air chamber, the lower part of the air chamber is connected to a rotating shaft, and the lower part of the rotating shaft is connected to a cleaning brush.

[0017] Advantages of the present invention:

[0018] 1. The present invention arranges a pneumatic system, which further improves the function of the secondary sedimentation tank through the pneumatic system, and plays a positive role in facilitating production operation and ensuring the stable operation of the secondary sedimentation tank;

[0019] 2. By arranging an oil filling device, the present invention can solve the problems of inconvenient lubricating oil filling and replacement of the rotating cage bearing of the driving mechanism of the existing secondary sedimentation tank. When filling and replacing lubricating oil, it is not necessary to stop the operation of the secondary sedimentation tank, and it is more convenient to use;

[0020] 3. By arranging a slag removal device, the present invention can effectively push the floating scum and duckweed on the water surface from the center to the periphery. Cooperating with the skimmer, it can greatly improve the cleaning efficiency of the floating scum and duckweed, and contribute to the stable operation of the secondary sedimentation tank;

[0021] 4. By arranging a cleaning system, the present invention can effectively clean the algae on the overflow weir and the pool wall of the outlet channel, which is convenient to use and plays a positive and beneficial role in ensuring the effluent quality. Brief Description of the Drawings

[0022] Figure 1 is a top view schematic diagram of the secondary sedimentation tank related to the present invention;

[0023] Figure 2 is a schematic diagram of the rotating cage of the single-tube sludge suction machine related to the present invention;

[0024] Figure 3 is the present invention Figure 2Partial enlarged schematic view of part B;

[0025] Figure 4 is the structural schematic diagram of the slag removal device of the present invention;

[0026] Figure 5 is the top view schematic diagram of the air bridge of the present invention;

[0027] Figure 6 is the bottom view schematic diagram of the air bridge of the present invention;

[0028] Figure 7 is the internal structure schematic diagram of the air bridge of the present invention;

[0029] Figure 8 is the present invention Figure 5 Schematic cross-sectional view of plane A-A in;

[0030] Figure 9 is the present invention Figure 1 Partial enlarged schematic view of part A;

[0031] Figure 10 is the structural schematic diagram of the cleaning device of the present invention.

[0032] Names corresponding to each mark in the figure:

[0033] 1, secondary sedimentation tank; 11, influent channel; 12, scum baffle; 13, overflow weir; 14, effluent channel; 15, bridge; 16, skimmer; 17, scum hopper; 18, air compressor; 19, drive mechanism; 191, rotating part; 192, stationary part; 1921, filling port; 2, rotating cage; 21, steel cable connection part; 22, skimmer connection part; 3, lubricating device; 31, first part; 311, cylinder; 312, connecting plate; 313, docking head; 32, second part; 321, fixed part; 3211, oil injection hole; 322, rolling part; 3221, oil injection channel; 3222, docking groove; 323, counterweight ball; 4, slag removal device; 41, first air inlet; 42, air chamber; 43, air outlet hole; 5, air bridge; 51, annular groove cover; 511, second air inlet; 52, annular buckle cover; 521, air outlet; 53, pressing plate; 54, rubber ring; 6, cleaning device; 61, first cleaning mechanism; 611, mounting frame; 612, mounting box; 613, third air inlet; 614, rotary joint; 615, air chamber; 616, tangential air outlet hole; 617, rotating shaft; 618, copper chuck; 619, cleaning brush; 62, second cleaning mechanism. Detailed implementation manners

[0034] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] As Figure 1-2As shown, the second sedimentation tank 1 of this embodiment is a second sedimentation tank 1 installed with a single-tube dredge suction machine, including an outer water inlet channel 11. Water in the water inlet channel 11 enters the tank body, and the water body after sedimentation is discharged through the scum baffle 12, the overflow weir 13 and the outlet channel 14; a bridge frame 15 is arranged between the edge of the tank body and the central pier of the tank body, and a driving mechanism 19 is installed through the bridge frame 15 and the central pier. The driving mechanism 19 includes a driving motor, a rotating part 191 and a stationary part 192. The driving motor is transmission-connected to the rotating part 191, the fixed part 321 is fixedly connected to the central pier, the rotating part 191 is connected to the cage 2 and drives the cage 2 to rotate, and the cage 2 is connected to the single-tube dredge suction machine.

[0036] like Figure 3-10 As shown, an air compressor 18 is arranged on the bridge 15, and the air compressor 18 is connected to the refueling device 3, the slag removal device 4 and the cleaning device 6 respectively.

[0037] like Figure 3 As shown, the refueling device 3 includes a first part 31 and a second part 32. The first part 31 includes a cylinder 311, and the cylinder 311 is fixedly connected to the bottom of the bridge 15. In this embodiment, two cylinders 311 are provided and arranged horizontally and symmetrically with respect to the refueling port. The ends of the piston rods of the two cylinders 311 are connected to a connecting plate 312, and a butt joint 313 is installed on the connecting plate 312. The butt joint 313 is connected to the refueling pipe. The oil delivery pipe extends to the top of the bridge 15 and cooperates with the pneumatic lubricating oil machine (pneumatic grease machine) through a quick-connect joint; the second part 32 includes a fixed part 321 with a spherical inner cavity, and the fixed part 321 is connected to the refueling port on the stationary part 192. 1921 is fixedly connected, a spherical rolling part 322 is rotatably arranged in the fixed part 321, a sealing ring is arranged between the fixed part 321 and the rolling part 322 (a matching groove matching with the sealing ring is arranged on the inner side of the fixed part 321); an oil filling hole 3211 connecting the refueling port 1921 and the internal cavity is arranged in the fixed part 321, a docking groove 3222 is arranged on one side of the rolling part 322, an oil filling channel 3221 penetrating the front end thereof and the docking slot is arranged in the rolling part 322, the oil filling channel 3221 matches with the oil filling hole 3211, the docking groove 3222 matches with the docking joint 313, and a counterweight ball 323 is connected below the docking groove 3222.

[0038] like Figure 4As shown, for the slag removal device 4, a steel cable connection part 21 and a skimmer connection part 22 are respectively arranged on both sides of the rotary cage 2. The steel cable connection part 21 is connected to the single-pipe sludge suction pipe through a steel cable stay. The skimmer connection part 22 is respectively connected to the skimmer 16 on the water surface and the truss at the bottom of the pool. The skimmer 16 cooperates with the scum bucket 17. A slag removal device 4 is arranged between the steel cable connection part 21 and the skimmer connection part 22 and the rotary cage 2. The slag removal device 4 is located 5 to 20 cm below the liquid level. The upper part of the slag removal device 4 is fixedly connected to the bottom of the bridge 15 through a connecting rod. The slag removal device 4 is annular, with an air cavity 42 inside. A first air inlet 41 is arranged above the air cavity 42. The first air inlet 41 is connected to the air compressor 18. Air outlet holes 43 are evenly distributed around the air cavity 42.

[0039] As Figure 5-10As shown in the figure, for the cleaning device 6, an air bridge 5 is fixedly arranged below the bridge 15. The air bridge 5 is located below the bridge 15, fixedly connected to the bridge 15, and located above the rotating part 191. The air bridge 5 is annular, including an annular groove cover 51. The flat part of the annular groove cover 51 is fixedly connected to the lower part of the bridge 15. A second air inlet 511 is arranged on the flat part of the annular groove cover 51, and the second air inlet 511 is connected to the air compressor 18; the groove surface part of the annular groove cover 51 is matched with the annular buckle cover 52. The annular buckle cover 52 is buckled in the annular groove cover 51. A plurality of sealing rubber rings 54 are arranged between the annular groove cover 51 and the annular buckle cover 52 (a matching groove for the rubber ring 54 is arranged between the annular groove cover 51 and the annular buckle cover 52), and annular pressing plates 53 are fixedly connected to the inner ring and the outer ring of the annular groove cover 51 respectively. Matching annular grooves are arranged above the annular pressing plate 53 and above the annular buckle cover 52, and balls are filled between the upper and lower annular grooves; an air outlet 521 is arranged below the annular buckle cover 52, and the air outlet 521 is communicated with the cleaning device 6 at the end of the skimmer 16. Among them, the air outlet 521 is first connected to the skimmer 16 through a hard metal pipe, and the hard metal pipe is fixedly connected to the skimmer 16, and then the hard metal pipe is communicated with the cleaning device 6 through a soft air pipe; the cleaning device 6 includes a first cleaning mechanism 61 and a second cleaning mechanism 62. The structures of the first cleaning mechanism 61 and the second cleaning mechanism 62 are basically the same (the lengths of the cleaning brushes 619 are different. The cleaning brush 619 on the outer side of the overflow weir 13 is shorter, and the cleaning brush 619 on the inner side of the water outlet channel 14 is longer), and they are respectively arranged on the outer side of the overflow weir 13 and the inner side of the water outlet channel 14. Taking the first cleaning mechanism 61 as an example, it includes a mounting frame 611. The mounting frame 611 is connected to the end of the skimmer 16. A mounting box 612 is fixedly connected below the mounting frame 611. A third air inlet 613 is arranged on one side of the mounting box 612, and the third air inlet 613 is connected to the air outlet 521. The third air inlet 613 is connected to a rotary joint 614 inside the mounting box 612. The rotary joint 614 is fixedly installed inside the mounting box 612. The rotating part 191 of the rotary joint 614 is connected to the air chamber 615. The inside of the air chamber 615 is communicated with the third air inlet 613. Tangential air outlet holes 616 are arranged on the outer periphery of the air chamber 615. The bottom of the air chamber 615 is connected to a rotating shaft 617. The rotating shaft 617 is connected to the bearing at the bottom of the mounting box 612. The cleaning brush 619 is detachably connected to the lower part of the rotating shaft 617 through a copper chuck 618; the bottom of the mounting box 612 is communicated with the second cleaning mechanism 62 through an air outlet pipe. The second cleaning mechanism 62 discharges air outward, and sound-absorbing cotton can be arranged around the inside of the mounting box 612.

[0040] The principle of the present invention is:

[0041] The air compressor 18 of the present invention can lead out four pipelines (air bridge, slag removal device, two cylinders and pneumatic grease gun) through a three-way joint, etc., and control valves are arranged on each pipeline.

[0042] Among them, the air compressor 18 is connected to the cylinder 311 in the oil filling device 3 through a pipeline, and a two-position five-way solenoid valve is installed on the pipeline (the inlets of the two cylinders are connected to each other, the outlets are connected to each other, and are respectively connected to the solenoid valve) for controlling the cylinder 311. When the lubricating oil of the driving mechanism 19 needs to be replaced, the single-pipe sludge suction machine is stopped during the process. During the stopping process, it should be noted that the first part 31 and the second part 32 of the oil filling device 3 are aligned with the blank part of the rotary cage 2 to avoid interference with the rotary cage 2 when the docking head 313 of the cylinder 311 drives forward; when refueling, the oil pipeline connected to the docking head 313 in the first part 31 can be connected to the outlet of the pneumatic grease gun, and a pipeline of the air machine is connected to the air pipe of the pneumatic grease gun. During the process, the quick-connect joint method can be used, which is a mature existing connection method and will not be elaborated here; at this time, control the docking head 313 to cooperate with the docking groove 3222. During the cooperation process of the docking head 313 and the docking groove 3222, the docking groove 3222 rotates under the pressure of the docking head 313 and makes the oil injection channel 3221 communicate with the oil injection hole 3211. At this time, start the pneumatic grease gun to realize the lubricating oil filling of the driving mechanism 19. After the filling is completed, the cylinder 311 contracts. At this time, the driving mechanism 19 can start working again. During this process, due to the setting of the counterweight ball 323, the docking groove 3222 rotates, so that the oil injection hole 3211 and the oil injection channel 3221 are staggered and separated from each other, playing a sealing role.

[0043] When the slag removal device 4 is in use, air is blown into it through the air compressor 18. The air blown in during the process is discharged from the air outlet hole 43 and forms ripples on the water surface, so that the scum, duckweed, etc. on the water surface of the pool body can be gathered at the edge of the pool body, and the scum, duckweed, etc. can be efficiently removed in cooperation with the skimmer; the slag removal device 4 does not need to operate all the time. When it is observed that there is more scum on the water surface, or there is more duckweed on the water surface in spring and summer, it can be started as needed to improve the removal efficiency of scum and duckweed.

[0044] The cleaning device 6 can clean the algae on the overflow weir 13. When there is more algae on the outside of the overflow weir 13 or the inside of the water outlet channel 14, the cleaning can be carried out through the cleaning device 6. The gas in the air machine passes through the air bridge 5 to the first cleaning mechanism 61 and the second cleaning mechanism 62. During the process, the gas tangentially flows out in the air chamber 615 and drives the cleaning brush 619 to rotate, so as to realize the cleaning process of the algae on the overflow weir 13.

[0045] The refueling device 3 of the present invention is used when lubricating oil needs to be added. The slag removal device 4 and the algae removal device are used more frequently in spring and summer. During the process, the slag removal device 4 and the algae removal device can be continuously started or intermittently started according to actual production needs. Through the pneumatic system of the present invention, the structural functions of the secondary sedimentation tank 1 are further improved, which is convenient for use in production and application promotion.

[0046] The present invention is not limited to the above-mentioned best implementation mode. Anyone can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as it has the same or similar technical solutions as the present application, it falls within the protection scope of the present invention.

Claims

1. A secondary sedimentation tank pneumatic system is arranged based on a secondary sedimentation tank with a single-tube sludge suction machine, and is characterized in that: It includes a refueling device, a slag removal device and a cleaning system; The refueling device, slag removal device and cleaning system are all matched with the air compressor; The refueling device is matched with the stationary part of the driving mechanism of the single-tube dredger, and includes a first part and a second part. The first part is fixedly connected to the bottom of the bridge, and the second part is fixedly connected to the refueling port on the stationary part. When the first part and the second part are not matched, there is a channel between the two for the rotation of the cage. When the air compressor drives the first part and the second part to match, the replacement of the grease of the cage driving bearing is completed through the pneumatic grease machine, the first part, the second part and the refueling port. The deslagging device is annular and arranged outside the rotating cage. The upper part of the deslagging device is fixedly connected to the lower part of the bridge frame. The deslagging device is arranged on the surface below the liquid level and does not interfere with the single-tube sludge suction machine in space. The upper part of the deslagging device is connected to the air compressor, and air outlet holes are evenly arranged around the deslagging device. The cleaning system includes an air path bridge and a cleaning device. The cleaning device is arranged based on the skimmer. The cleaning device includes a first cleaning mechanism and a second cleaning mechanism. The first cleaning mechanism and the second cleaning mechanism are respectively arranged on the outside of the overflow weir and the inside of the outlet channel. Cleaning brushes are arranged in the first cleaning mechanism and the second cleaning mechanism. The cleaning brushes rotate under the drive of the air compressor. An air path bridge is arranged below the bridge frame, and the air path of the air compressor is connected to the cleaning device through the air path bridge.

2. The pneumatic system of a secondary sedimentation tank according to claim 1, wherein: The first part of the refueling device is located on the outside of the rotating cage, including a cylinder, which is connected to the air compressor, and the front end of the cylinder is connected to the docking joint, which is connected to the oil pipeline, and the oil pipeline extends to the top of the bridge to cooperate with the pneumatic grease dispenser; the second part is located on the inside of the rotating cage, including a fixed part and a rotating part, the fixed part is fixedly connected to the stationary part, an oil filling hole is through-set in the fixed part, and the oil filling hole cooperates with the refueling port; the rotating part rotation seal is arranged inside the fixed part, the front end of the rotating part is provided with an oil filling channel that cooperates with the oil filling hole, and the rear end of the rotating part is provided with a docking groove that cooperates with the docking joint.

3. The secondary sedimentation tank pneumatic system according to claim 2, characterized in that: A counterweight ball is connected below the docking groove. When the docking joint cooperates with the docking groove, the oil injection hole is connected with the oil injection channel; when the docking joint is separated from the docking groove, the oil injection hole is separated from the oil injection channel under the action of the counterweight ball.

4. The pneumatic system of a secondary sedimentation tank according to claim 1, characterized in that: A steel cable connection part and a slag skimmer connection part are respectively arranged on both sides of the rotating cage, and gaps are formed between the steel cable connection part, the slag skimmer connection part and the rotating cage, and the slag removal device is arranged in the gap.

5. The pneumatic system of a secondary sedimentation tank according to claim 1, characterized in that: The air path bridge is located between the bottom of the bridge frame and the top of the rotating part of the driving mechanism, and includes an annular groove cover and an annular buckle cover. The annular groove cover is fixedly connected to the bottom of the bridge frame, the annular buckle cover is inverted in the annular groove cover, and a rotating seal is arranged between the annular groove cover and the annular buckle cover. A pressure plate is connected and fixed to the inner and outer rings of the annular groove cover; a cavity is formed between the annular groove cover and the annular buckle cover, the cavity is connected to the air compressor through the annular groove cover, and the cavity is connected to the cleaning device through the annular buckle cover.

6. The pneumatic system of a secondary sedimentation tank according to claim 5, characterized in that: The air outlet on the annular buckle cover is connected to a hard metal pipe, the other end of the metal pipe is fixedly connected to the skimmer, and the metal pipe is communicated with the cleaning device through a flexible air pipe.

7. The pneumatic system of a secondary sedimentation tank according to claim 1, characterized in that: Both the first cleaning mechanism and the second cleaning mechanism include a mounting frame, and the mounting frame is matched with the end of the skimmer; the lower part of the mounting frame is connected to a mounting box, a rotary joint is fixedly arranged in the mounting box, the rotating end of the rotary joint is communicated with an air chamber, tangential air outlet holes are arranged on the outer periphery of the air chamber, the lower part of the air chamber is connected to a rotating shaft, and the lower part of the rotating shaft is connected to a cleaning brush.

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