Automatic pool wall cleaning device

By designing an automatic cleaning device, a drive component is used to drive a brush roller to automatically clean the effluent weir of the secondary sedimentation tank, which solves the problem of low efficiency of manual cleaning and achieves efficient cleaning and safe water quality assurance.

CN224128153UActive Publication Date: 2026-04-17CHONGQING THREE GORGES WATER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING THREE GORGES WATER CO LTD
Filing Date
2025-05-15
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

The existing secondary sedimentation tank cleaning mainly relies on manual scrubbing, which is inefficient, costly, and poses safety risks. Furthermore, the dirt on the inner wall of the effluent weir affects water quality.

Method used

Design an automatic cleaning device comprising a main housing, a top wall brush roller, a side wall brush roller, and a walking unit. The brush roller is driven to rotate and move along the side wall of the water outlet weir by a drive component to achieve automatic cleaning.

Benefits of technology

It improves cleaning efficiency, saves labor costs, ensures water quality, and avoids the safety risks of manual wading.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of secondary sedimentation tank wall cleaning, and particularly discloses an automatic tank wall cleaning device which comprises a main machine shell, a top wall brush roller, a side wall brush roller and a walking unit, a driving assembly used for driving the top wall brush roller, the side wall brush rollers and the walking unit to rotate is installed in the main machine shell. Bristles are mounted on the top wall brush roller and the side wall brush roller, and the side wall brush roller is located on the inner side of the effluent weir and used for brushing the side wall of the effluent weir; the top wall brush roller is positioned on the top wall of the effluent weir and is used for brushing the top wall of the effluent weir; and the walking unit can move along the side wall of the effluent weir. The automatic cleaning device can realize automatic cleaning, improve the working efficiency and simultaneously save the labor cost.
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Description

Technical Field

[0001] This utility model relates to the field of secondary sedimentation tank wall cleaning technology, specifically to an automatic tank wall cleaning device. Background Technology

[0002] In the wastewater treatment process, a secondary sedimentation tank is usually used to settle the mixed liquor of wastewater after biological treatment, separate the mud and water, clarify the mixed liquor and concentrate the sludge, and return the separated sludge to the biological treatment section.

[0003] In the secondary sedimentation tank effluent treatment, a scum baffle and an effluent weir are usually installed around the perimeter of the secondary sedimentation tank. A triangular baffle is installed on the side of the effluent weir near the scum baffle, forming an effluent channel. Since the actual cross-sectional area of ​​the secondary sedimentation tank is smaller than the designed cross-sectional area, the water level difference is used to overflow the clarified upper layer of mixed liquor from the triangular baffle into the effluent channel to achieve effluent discharge. The scum baffle is located inside the effluent weir and is connected to the effluent weir. The scum baffle is used to block the scum in the secondary sedimentation tank, so that the clarified upper layer of liquor overflows into the effluent channel of the effluent weir more cleanly, avoiding the introduction of scum.

[0004] The mixed liquor in the secondary sedimentation tank is rich in organic nutrients and algae. A lot of moss and algae often appear on the inner wall, bottom and top of the outlet channel of the outlet weir. If a lot of dirt is not cleaned in time, it will affect the quality of the effluent to a certain extent.

[0005] Currently, the cleaning of secondary sedimentation tanks mainly relies on manual back-and-forth scrubbing, which is inefficient, costly, and carries safety risks for workers wading in water. Utility Model Content

[0006] This utility model provides an automatic pool wall cleaning device, which aims to achieve automatic cleaning, improve work efficiency, and save labor costs.

[0007] This utility model is achieved through the following technical solution: it includes a main housing and a top wall brush roller, a side wall brush roller and a walking unit that are rotatably engaged with the main housing;

[0008] The main housing contains a drive assembly for driving the top wall brush roller, side wall brush roller and walking unit to rotate.

[0009] Both the top wall brush roller and the side wall brush roller are equipped with bristles. The side wall brush roller is located inside the outlet weir and is used to brush the side wall of the outlet weir. The top wall brush roller is located on the top wall of the outlet weir and is used to brush the top wall of the outlet weir.

[0010] The walking unit is capable of moving along the side wall of the outlet weir.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0012] In this solution, a drive assembly is installed inside the main housing to drive the top wall brush roller, side wall brush roller, and walking unit to rotate. During the rotation of the top wall brush roller and side wall brush roller, the top and side walls of the outlet weir are automatically brushed. Meanwhile, the walking unit moves along the pool wall of the outlet weir during the rotation, thereby achieving the purpose of automatically cleaning the entire circumference of the outlet weir, effectively improving cleaning efficiency and saving labor costs.

[0013] Furthermore, the sidewall brush roller includes a first sidewall brush roller and a second sidewall brush roller, which respectively brush the two inner sidewalls of the outlet weir.

[0014] In this design, the first and second sidewall brush rollers can simultaneously brush the two inner sidewalls of the outlet weir, improving cleaning efficiency.

[0015] Furthermore, the walking unit, main housing, top wall brush roller and first side wall brush roller are located on the same side, the second side wall brush roller is located on the other side of the water outlet weir, a support arm is connected to the main housing, one end of the support arm extends to the top of the second side wall brush roller and is rotatably connected to the second side wall brush roller; a power component for driving the second side wall brush roller to rotate is installed on the support arm.

[0016] In this design, the walking unit, main body housing, top wall brush roller and first side wall brush roller are set on the same side, which facilitates centralized installation and reduces installation difficulty. By setting up a support arm, it is easy to install the second side wall brush roller, so that the second side wall brush roller can move along the outlet weir together with the main body housing.

[0017] Furthermore, there are two of each of the support arms and the second sidewall brush rollers, and the two second sidewall brush rollers are rotatably engaged with one end of each of the two support arms.

[0018] In this design, there are two support arms and two side wall brush rollers, which can improve the cleaning effect on the side wall of the outlet weir and make the outlet weir cleaner.

[0019] Furthermore, the two support arms are arranged in a figure-eight shape, and one end of each of the two support arms is rotatably connected to the main unit housing, with an elastic element connecting the two support arms.

[0020] In this design, an elastic element connects the two support arms, making the distance between them adjustable. This allows the distance between the two support arms to adapt to changes in the width of the outlet weir, facilitating smooth passage through narrower sections of the outlet weir and thus improving the adaptability of the automatic pool wall cleaning device in this design.

[0021] Furthermore, each of the two support arms is fixedly connected to a fixing ring on one side facing each other. The elastic element is a tension spring, and hooks are fixedly connected to both ends of the tension spring. The hooks at both ends of the tension spring are respectively hung on the two fixing rings.

[0022] In this design, the retaining ring and the hooks at both ends of the tension spring work together to enable quick installation or removal of the tension spring.

[0023] Furthermore, an installation box is installed at the top of the support arm, the power component is installed inside the installation box, a fixed shaft is installed on the top of the installation box, a crossbar and a connecting rod are installed on the fixed shaft, the crossbar is located above the connecting rod, one end of the crossbar is rotatably connected to a top wall auxiliary wheel, and one end of the connecting rod is rotatably connected to a side wall auxiliary wheel. The side wall auxiliary wheel and the top wall auxiliary wheel move along the side wall and top wall of the outlet weir, respectively.

[0024] The installation box in this design facilitates the shielding and protection of the power components, while also allowing for the installation of the fixed shaft. The crossbar and connecting rod mounted on the fixed shaft facilitate the rotation and installation of the side wall auxiliary wheels and top wall auxiliary wheels. The side wall auxiliary wheels and top wall auxiliary wheels move along the side wall and top of the outlet weir, respectively, which further improves the stability of the entire cleaning device and ensures the smoothness and stability of the entire device during movement.

[0025] Furthermore, a baffle brush roller is rotatably connected to the main housing, the baffle brush roller is equipped with bristles, and the baffle brush roller is located between the scum baffle and the effluent weir.

[0026] In this solution, the baffle brush roller can clean the side wall between the scum baffle and the effluent weir, which can further ensure the quality of the effluent.

[0027] Furthermore, the walking unit includes an active walking wheel and a driven walking wheel. The active walking wheel is coaxially and fixedly connected to an active connecting shaft, which is rotatably connected to the main housing. The driven walking wheel is coaxially and rotatably connected to a driven connecting shaft, which is perpendicularly and fixedly connected to the main housing. The driven walking wheel is located between the scum baffle and the effluent weir, and the active walking wheel is located on one of the inner sidewalls of the effluent weir. The driven walking wheel and the active walking wheel can travel along the sidewall of the effluent weir. The driving component can drive the active connecting shaft to rotate.

[0028] In this design, the walking unit includes active walking wheels and passive walking wheels. The active walking wheels and passive walking wheels travel along the inner and outer walls of the outlet weir, respectively, which improves the stability of the entire device's movement.

[0029] Furthermore, a fixing frame is vertically fixedly connected to the middle of the support arm, and a mounting plate is connected to the bottom of the fixing frame, with a scraper installed on the mounting plate.

[0030] In this solution, a mounting frame is installed, which facilitates the connection of a mounting plate to the bottom of the frame. A scraper is installed on the mounting plate, so that as the entire device moves around the circumference of the outlet weir for cleaning, the scraper on the mounting plate can clean the bottom of the outlet weir and remove impurities from the bottom of the outlet weir's flow channel, thereby further improving the cleaning quality. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0032] Figure 1 This is a longitudinal cross-sectional view of an embodiment of an automatic pool wall cleaning device according to the present invention;

[0033] Figure 2 This is a top view of one embodiment of an automatic pool wall cleaning device according to the present invention;

[0034] Figure 3 This is a top view of another embodiment of the automatic pool wall cleaning device of this utility model.

[0035] The attached diagram shows the markings and corresponding component names:

[0036] 1. Outlet weir; 2. Scum baffle; 3. Triangular baffle; 4. Main unit housing; 5. Support arm; 6. First side wall brush roller; 7. Second side wall brush roller; 8. Baffle brush roller; 9. Top wall brush roller; 10. Driven traveling wheel; 11. Driven connecting shaft; 12. Active traveling wheel; 13. Active connecting shaft; 14. Mounting box; 15. Fixed shaft; 16. Crossbar; 17. Bracket; 18. Top wall auxiliary wheel; 19. Connecting rod; 20. Side wall auxiliary wheel; 21. Fixed frame; 22. Fixing component; 23. Fixing bolt; 24. Mounting plate; 25. Scraper; 26. Fixing ring; 27. Tension spring. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0038] The secondary sedimentation tank is surrounded by a scum baffle and an outlet weir. A triangular baffle 3 is installed on the side of the outlet weir closest to the scum baffle, forming an outlet channel. The settled water in the secondary sedimentation tank overflows from the top of the outlet weir (this side is the overflow side of the outlet weir) into the outlet channel of the outlet weir, and then flows from the outlet channel to the designated position.

[0039] As one embodiment of this application, such as Figures 1-2 As shown, an automatic pool wall cleaning device is provided, including a main housing 4 and a top wall brush roller 9, a side wall brush roller, and a traveling unit that are rotatably coupled to the main housing 4; the main housing 4 is equipped with a drive assembly for driving the top wall brush roller 9, the side wall brush roller, and the traveling unit to rotate. The drive assembly includes a battery, a controller, multiple relays, and multiple drive motors. The multiple drive motors are used to drive the top wall brush roller 9, the side wall brush roller, and the traveling unit to rotate. The battery is used to power the controller, the drive motors, and the relays. The controller is used to control the on and off of the relays to control the start and stop of the drive motors. The technology of the controller controlling the start and stop of the motors is prior art and will not be described in detail here.

[0040] Both the top wall brush roller 9 and the side wall brush roller are equipped with bristles. The side wall brush roller is located inside the outlet weir 1 and is used to brush the side wall of the outlet weir 1. The top wall brush roller 9 is located on the top wall of the outlet weir 1 and is used to brush the top wall of the outlet weir 1. In this embodiment, the top wall brush roller 9 is used to brush the top of the side of the outlet weir overflowing, while the other top of the outlet weir does not need to be cleaned because it does not need to overflow the water that has settled in the secondary sedimentation tank. The walking unit is a walking wheel, which can move along the side wall of the outlet weir 1. That is, the walking wheel can move along the side wall of the outlet weir 1 while rotating.

[0041] In one embodiment, the walking unit includes an active walking wheel 12 and a driven walking wheel 10. The active walking wheel 12 is coaxially and fixedly connected to an active connecting shaft 13, which is rotatably connected to the main housing 4. The driven walking wheel 10 is coaxially and rotatably connected to a driven connecting shaft 11, which is vertically and fixedly connected to the main housing 4. In this embodiment, the top end of the driven connecting shaft 11 passes through the bottom of the main housing 4, and a fixed plate is coaxially welded to the upper part of the driven connecting shaft 11. The fixed plate is fixed to the main housing 4 by bolts, thereby achieving a fixed connection between the driven connecting shaft 11 and the main housing 4.

[0042] The driven wheel 10 is located between the scum baffle 2 and the outlet weir 1, and the driven wheel 12 is located on one of the inner walls of the outlet weir 1. That is, both the driven wheel 12 and the driven wheel 10 are located on the overflow side of the outlet weir 1. The driven wheel 12 and the driven wheel 10 are located on the inner and outer walls of the overflow side of the outlet weir 1, respectively. The driven wheel 10 and the driven wheel 12 can travel along the outer and inner walls of the outlet weir 1.

[0043] The drive assembly can drive the active connecting shaft 13 to rotate. That is, the output shaft of one of the drive motors inside the main housing 4 is fixedly connected to the active connecting shaft 13 through a coupling, which facilitates the rotation of the active connecting shaft 13 while simultaneously driving the active traveling wheel 12 to rotate, thereby causing the active traveling wheel 12 and the driven traveling wheel 10 to move along one side of the outlet weir 1 respectively. Figure 1 The inner and outer walls of the device (on the left side) move, thereby achieving the automatic movement effect of the entire device. This makes it easier to drive the top wall brush roller 9 and the side wall brush roller to move and brush along the circumference of the water outlet weir 1.

[0044] In one embodiment, two driven wheels 10 and two driven wheels 12 are provided, with the two driven wheels 10 and the two driven wheels 12 located on the front and rear sides of the main housing 4, respectively. Figure 1 (Perspective) This makes the entire device more stable and the movement process smoother.

[0045] The sidewall brush rollers include a first sidewall brush roller 6 and a second sidewall brush roller 7. The first sidewall brush roller 6 and the second sidewall brush roller 7 are located on both sides of the water outlet channel of the water outlet weir 1, and the first sidewall brush roller 6 and the second sidewall brush roller 7 respectively brush the two inner sidewalls of the water outlet weir 1.

[0046] The walking unit, main housing 4, top wall brush roller 9, and first side wall brush roller 6 are located on the same side. Figure 1 On the left side of the outlet weir (i.e., the overflow side installed on the outlet weir), the second sidewall brush roller 7 is located on the other side of the outlet weir 1. Figure 1 On the right side of the main body housing 4, a support arm 5 is connected. In this embodiment, one end of the support arm 5 is fixedly connected to the main body housing 4 by bolts. The other end of the support arm 5 extends to the top of the second sidewall brush roller 7 and is rotatably connected to the second sidewall brush roller 7. A power component for driving the second sidewall brush roller 7 to rotate is installed on the support arm 5, specifically: as shown in the example... Figure 2 As shown, there are two support arms 5 and two second side wall brush rollers 7. The two second side wall brush rollers 7 are rotatably engaged with one end of the two support arms 5 respectively. The top ends of the two second side wall brush rollers 7 pass through the support arms 5 and are rotatably connected to the support arms 5 through bearings.

[0047] In one embodiment, a mounting box 14 is installed at the top of the support arm 5 by screws. The power component is installed in the mounting box 14. The power component is a motor. The output shaft of the motor is fixedly connected to the brush roller 7 on the second side wall by a coupling. The battery and relay controller in the main housing 4 are connected to the power component by wires for power supply and control of the power component.

[0048] In one embodiment, a fixed shaft 15 is installed on the top of the mounting box 14. The fixed shaft 15 is vertically fixedly connected to the mounting box 14. A crossbar 16 and a connecting rod 19 are installed on the fixed shaft 15. The crossbar 16 is located above the connecting rod 19. In this embodiment, there are two connecting rods 19 on the fixed shaft 15 of each of the two support arms 5. The ends of the two connecting rods 19 away from the fixed shaft 15 are rotatably connected to the side wall auxiliary wheel 20 through bearings. One end of the crossbar 16 is rotatably connected to the top wall auxiliary wheel 18. Specifically, a bracket 17 is welded and fixed to the end of the crossbar 16 away from the fixed shaft 15. The top wall auxiliary wheel 18 is rotatably connected to the bracket 17 through a rotating shaft. The side wall auxiliary wheel 20 and the top wall auxiliary wheel 18 move along the side wall and top wall of the outlet weir 1, respectively.

[0049] In one embodiment, a baffle brush roller 8 is rotatably connected to the main housing 4. The baffle brush roller 8 is equipped with bristles and is located between the scum baffle 2 and the effluent weir 1. Two baffle brush rollers 8 and two top wall brush rollers 9 are provided, respectively distributed on the front and rear sides of the main housing 4. Figure 1 (Perspective) This improves the cleaning effect. The baffle brush roller 8 can brush the outer side of the scum baffle 2 and the outlet weir 1, while the top wall brush roller 9 can brush the top of the overflow side of the outlet weir 1 and the triangular baffle 3, so as to avoid the large amount of debris hanging on the triangular baffle 3 during long-term use, which would affect the water quality and water volume.

[0050] The bristles on the baffle brush roller 8, the top wall brush roller 9, the first side wall brush roller 6, and the second side wall brush roller 7 are circumferentially distributed. Since the first side wall brush roller 6 and the second side wall brush roller 7 need to brush the two side walls of the water outlet channel of the water outlet weir 1, the length of the first side wall brush roller 6 and the second side wall brush roller 7 is relatively long. Therefore, the bristles on the first side wall brush roller 6 and the second side wall brush roller 7 are arranged in multiple layers along their axial direction, and each layer of bristles has multiple bristles.

[0051] In another embodiment, such as Figure 3 As shown, the two support arms 5 are distributed in a figure-eight shape, and one end of each support arm 5 is rotatably connected to the main housing 4. An elastic element is connected between the two support arms 5. The two support arms 5 maintain the figure-eight structure under the action of the elastic element. When the width of the water outlet side and the water inlet side of the water outlet channel of the water outlet weir 1 are inconsistent, it can automatically adjust under the action of the elastic element, and can adapt to the cleaning of water outlet weir 1 with different groove widths.

[0052] When the width of the outlet channel of the outlet weir 1 narrows, the sidewall of the outlet weir 1 will compress the two support arms 5, causing the width of the two support arms 5 to increase and open outward. At this time, the elastic element is stretched. When it moves to the part where the channel width increases, the two support arms 5 gradually return to their original position under the action of the elastic element. In this embodiment, the two support arms 5 can automatically adjust and adapt according to the different channel widths under the action of the elastic element, so that the entire automatic cleaning device can pass through the position where the channel width narrows, thereby realizing the smooth circumferential cleaning of the outlet weir 1. Under the action of the elastic element, the side wall auxiliary wheel 20 and the top wall auxiliary wheel 18 always abut against the side wall and top wall of the outlet weir 1, thereby facilitating circumferential movement along the outlet weir 1.

[0053] Each of the two support arms 5 has a fixed ring 26 fixedly connected to one side facing each other. In this embodiment, the fixed ring 26 is welded and fixed to the support arm 5. The elastic element is a tension spring 27. Both ends of the tension spring 27 are fixedly connected to hooks. The hooks at both ends of the tension spring 27 are respectively hung on the two fixed rings 26, thereby realizing the installation connection between the elastic element and the two support arms 5.

[0054] In another embodiment, such as Figure 1 As shown, a fixing frame 21 is vertically fixedly connected to the middle of the two support arms 5. In this embodiment, the upper part of the fixing frame 21 is fixed to the support arm 5 by fixing parts 22 and fixing bolts 23. Specifically, the fixing frame 21 includes two vertical rods and two horizontal beams. The two horizontal beams are vertically welded and fixed between the two vertical rods. Both vertical rods are square tubes. The fixing parts 22 are provided with grooves that match the vertical rods. The two fixing parts 22 are fastened to the upper outer side of the two vertical rods through the grooves. Bolts are inserted on both sides of the fixing parts 22. The fixing parts 22 are fixed to the support arm 5 by the bolts. This makes it easy to install and disassemble the fixing frame 21, and the installation and disassembly are more flexible and convenient.

[0055] The bottom of the fixing frame 21 is bolted to a mounting plate 24, and a scraper 25 is mounted on the mounting plate 24 with screws. In this embodiment, the scraper 25 is made of rubber to avoid scratching and damaging the bottom wall of the outlet weir 1. The width of the scraper 25 can cover as much of the bottom wall of the outlet weir as possible, increasing the contact area between the scraper 25 and the bottom wall, thereby improving the cleaning area of ​​the bottom wall of the outlet weir's flow channel.

[0056] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pool wall automatic cleaning device, characterized by, Includes the main housing and the top wall brush roller, side wall brush roller and traveling unit that rotate with the main housing; The main housing contains a drive assembly for driving the top wall brush roller, side wall brush roller and walking unit to rotate. Both the top wall brush roller and the side wall brush roller are equipped with bristles. The side wall brush roller is located inside the outlet weir and is used to brush the side wall of the outlet weir. The top wall brush roller is located on the top wall of the outlet weir and is used to brush the top wall of the outlet weir. The walking unit is capable of moving along the side wall of the outlet weir.

2. A pool wall automatic cleaning device according to claim 1, wherein The sidewall brush rollers include a first sidewall brush roller and a second sidewall brush roller, which respectively brush the two inner sidewalls of the outlet weir.

3. A pool wall automatic cleaning device according to claim 2, wherein The walking unit, main housing, top wall brush roller and first side wall brush roller are located on the same side, and the second side wall brush roller is located on the other side of the outlet weir. A support arm is connected to the main housing, one end of the support arm extends to the top of the second side wall brush roller and is rotatably connected to the second side wall brush roller; a power component for driving the second side wall brush roller to rotate is installed on the support arm.

4. A pool wall automatic cleaning device according to claim 3, wherein Two of each of the support arms and the second sidewall brush rollers are provided, and the two second sidewall brush rollers are respectively rotatably engaged with one end of the two support arms.

5. A pool wall automatic cleaning device according to claim 4, wherein The two support arms are arranged in a figure-eight shape, and one end of each support arm is rotatably connected to the main body housing. An elastic element connects the two support arms.

6. A pool wall automatic cleaning device according to claim 5, wherein Each of the two support arms has a fixed ring fixedly connected to one side facing each other. The elastic element is a tension spring, and hooks are fixedly connected to both ends of the tension spring. The hooks at both ends of the tension spring are respectively hung on the two fixed rings.

7. A pool wall automatic cleaning device according to any one of claims 3-6, characterised in that, An installation box is installed at the top of the support arm, and the power component is installed inside the installation box. A fixed shaft is installed on the top of the installation box, and a crossbar and a connecting rod are installed on the fixed shaft. The crossbar is located above the connecting rod. One end of the crossbar is rotatably connected to a top wall auxiliary wheel, and one end of the connecting rod is rotatably connected to a side wall auxiliary wheel. The side wall auxiliary wheel and the top wall auxiliary wheel move along the side wall and top wall of the outlet weir, respectively.

8. A pool wall automatic cleaning device according to any one of claims 1-6, characterized in that, A baffle brush roller is rotatably connected to the main housing. The baffle brush roller is equipped with bristles and is located between the scum baffle and the effluent weir.

9. A pool wall automatic cleaning device according to any one of claims 1-6, characterized in that, The walking unit includes an active walking wheel and a driven walking wheel. The active walking wheel is coaxially and fixedly connected to an active connecting shaft, which is rotatably connected to the main housing. The driven walking wheel is coaxially and rotatably connected to a driven connecting shaft, which is perpendicularly and fixedly connected to the main housing. The driven walking wheel is located between the scum baffle and the effluent weir, and the active walking wheel is located on one of the inner sidewalls of the effluent weir. The driven walking wheel and the active walking wheel can travel along the sidewall of the effluent weir. The driving component can drive the active connecting shaft to rotate.

10. A pool wall automatic cleaning device according to any one of claims 3-6, characterised in that, A fixing frame is vertically fixed to the middle of the support arm, and a mounting plate is connected to the bottom of the fixing frame. A scraper is installed on the mounting plate.