Sewage pool inner wall cleaning device

Abstract

The utility model relates to the technical field of sewage pool cleaning, and discloses a sewage pool inner wall cleaning device which comprises an outer blocking frame, an inner fixing device, a telescopic rod, an electric hydraulic device and a cleaning structure, the outer blocking frame is of an L-shaped plate-shaped structure, the lower end of the outer blocking frame is rotationally connected with a roller, and the two ends of the telescopic rod are slidably connected with a telescopic cylinder a and a telescopic cylinder b; the telescopic cylinder b is fixedly arranged at the inner end of the outer blocking frame, the telescopic cylinder a is fixedly arranged at the inner end of the inner fixing device, the electric hydraulic device is fixedly arranged in the inner fixing device in a penetrating mode, a hydraulic column is connected to the bottom of the electric hydraulic device, a bottom plate is fixedly arranged at the bottom of the hydraulic column, and the cleaning structure is arranged at the inner end of the bottom plate. The sewage pool inner wall cleaning device is suitable for sewage pools with different thicknesses, the outer edge of the sewage pool is automatically controlled to move annularly, the inner walls of the sewage pools with different depths can be accurately cleaned, the cleaning efficiency is improved, the cleaning comprehensiveness and uniformity are enhanced, and cleaning dead corners are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage pool cleaning technical field, concretely is sewage pool inner wall cleaning device. BACKGROUND

[0002] Sewage pool is generally used for sewage sedimentation, and after several rounds of sewage purification, a large amount of impurities and scale will be accumulated on the inner wall of the sewage pool, which not only causes poor effect of subsequent sewage purification, but also makes subsequent cleaning more difficult if the impurities are not removed in time.

[0003] The sewage pool structure is simple at present, and generally does not have the function of cleaning the inner wall of the sewage pool, so people need to hold cleaning tools to clean, so people are easy to be tired, and it is difficult for people to clean the sewage pool completely, and a large amount of chemical reagent is often added in the sewage pool to melt the dirt, so that the staff can remove dirt, and the chemical reagent after cleaning is often directly discharged in the later period, polluting the environment. Therefore, a corresponding technical scheme needs to be designed to solve it. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a sewage pool inner wall cleaning device, which solves the technical problem.

[0006] (II) Technical scheme

[0007] In order to achieve the above purpose, the utility model realizes the following technical scheme: a sewage pool inner wall cleaning device, which comprises an outer baffle, an inner fixing device, an extension rod, an electric hydraulic device and a cleaning structure, the outer baffle is in L-shaped plate structure and the lower end is rotatably connected with a roller, the upper end of the roller is connected with a driving motor one, the driving motor one is fixed on the upper end of the outer baffle, so that the whole device can move stably on the edge of the sewage pool, and cleaning operation can be carried out at different positions, the diameter of the roller is greater than the width of the outer baffle;

[0008] The two ends of the extension rod are slidably connected with an extension cylinder a and an extension cylinder b, the extension cylinder b is fixed on the inner end of the outer baffle, the extension cylinder a is fixed on the inner end of the inner fixing device, the upper ends of the extension cylinder a and the extension cylinder b are both connected with locking bolts through threads;

[0009] The electric hydraulic device is fixed in the inner fixing device, the bottom of the electric hydraulic device is connected with a hydraulic column, the bottom of the hydraulic column is fixed with a bottom plate, and the cleaning structure is arranged on the inner end of the bottom plate.

[0010] Preferably, the roller is fitted with rubber rings, and a limiting groove is formed on the upper end face of the roller. Limiting rods are fixedly provided at the front and rear ends of the bottom of the outer baffle, and the limiting rods are slidably connected inside the limiting grooves. The rubber rings increase friction, improve the stability of movement, and effectively protect the edge of the sewage tank from damage. The cooperation between the limiting grooves and the limiting rods prevents the roller from shifting and ensures the stable movement of the device.

[0011] Preferably, the cleaning structure includes a second drive motor, a drive shaft disc, a fixed plate, a first horizontal shaft, a rotating shaft disc, and a first cleaning brush head. The second drive motor is fixedly mounted on the upper end of the base plate, and its output end is connected to a drive shaft. The drive shaft disc is fixedly mounted on the inner end of the drive shaft. The cleaning structure is used to fix and support the inner end of the base plate for cleaning the inner wall of the sewage tank. The second drive motor and the drive shaft are used to automatically control the rotation of the drive shaft disc. The fixed plate is fixedly mounted on the bottom of the base plate. The shaft cylinder is distributed through the interior of the fixed plate. The first horizontal shaft is rotatably connected to the upper shaft cylinder. The rotating shaft disc is fixedly mounted on the inner end of the first horizontal shaft. The first cleaning brush head is fixedly distributed in a ring array on the inner end face of the rotating shaft disc. A transmission belt is sleeved between the drive shaft disc and the rotating shaft disc. The drive shaft disc is used to drive the rotating shaft disc through the transmission belt. The rotating shaft disc is used to control the rotation of the first horizontal shaft and the large gear disc. The rotating shaft disc is used to drive multiple sets of first cleaning brush heads to effectively clean the inner wall of the sewage tank.

[0012] Preferably, a large gear disk is fixedly mounted on the outside of the first horizontal shaft, which is located between the shaft cylinder and the rotating shaft disk. A second horizontal shaft is connected through the lower shaft cylinder. A turntable is fixedly mounted on the inner end of the second horizontal shaft, and cleaning brush heads are fixedly distributed on the turntable. A small gear disk is fixedly mounted on the outside of the second horizontal shaft, and the small gear disk is meshed with the large gear disk. The shaft cylinder is used to stably support the rotation of the first and second horizontal shafts, the large gear disk is used to mesh and control the rotation of the small gear disk, the small gear disk is used to drive the second horizontal shaft and the turntable to rotate, and the cleaning brush heads are used to further clean the inner wall of the sewage tank.

[0013] Preferably, the telescopic rod is provided with a sewage tank edge support and movable structure at the middle. The sewage tank edge support and movable structure includes a partition, a pad, and a second pulley. The partition is fixedly installed at the middle of the telescopic rod, the pad is fixedly installed at the bottom of the partition, and the second pulley is longitudinally distributed at the bottom middle of the pad. A second shaft is rotatably connected through the inside of the second pulley, and a second shaft bracket is fixedly installed at the outer end of the second shaft. The second shaft bracket is fixedly installed at the bottom of the pad. The partition and the pad are used to stably support the equipment on the upper surface of the sewage tank edge, and the second shaft bracket and the second shaft are used to support the second pulley to slide stably, avoid jamming, enhance the stability and flexibility of the device during movement, and reduce friction with the upper surface of the sewage tank.

[0014] Preferably, the movable support structure for the inner wall of the sewage tank includes an extension plate, springs, a horizontal plate, and a pulley. The extension plate is fixedly located at the bottom inner end of the inner fixing device. The springs are fixedly distributed at the inner end of the extension plate. The horizontal plate is fixedly located at the inner end of the springs. The pulley is distributed at the inner end of the horizontal plate. A shaft is rotatably connected through the pulley. A shaft bracket is fixedly located at the outer end of the shaft bracket and is fixedly located at the inner end of the horizontal plate. The extension plate extends downwards towards the inner fixing device. Multiple sets of springs provide elastic support for the horizontal plate and multiple sets of pulleys. The shaft bracket and shaft support provide stable support for the rotation of the pulleys. The pulleys enhance the stability and flexibility of the device during movement, reduce friction with the sewage tank wall, and extend its service life.

[0015] (III) Beneficial Effects

[0016] This sewage tank inner wall cleaning device, through the telescopic cylinders a and b slidably connected at both ends of the telescopic rod, facilitates the adjustment of the distance between the outer baffle and the inner fixing device, making it suitable for sewage tanks of different thicknesses. The roller assembly located at the lower end of the outer baffle allows for automated control of the rollers located outside the sewage tank, thereby controlling the entire device to move in a ring around the outer edge of the sewage tank. The cleaning structure connected to the bottom of the electro-hydraulic device and hydraulic column allows for free vertical adjustment, enabling precise cleaning of the inner walls of sewage tanks of different depths. This improves cleaning efficiency, enhances the comprehensiveness and uniformity of cleaning, effectively avoids cleaning dead zones, and ensures ideal cleaning results in sewage tanks of various sizes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall top view structure of this utility model;

[0018] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a schematic diagram of the overall structure of this utility model from a lower perspective;

[0020] Figure 4 This is a schematic diagram of the overall structure of the cleaning mechanism of this utility model;

[0021] Figure 5 This is a partial structural diagram of the cleaning mechanism of this utility model;

[0022] Figure 6 This is a schematic diagram of the movable support structure for the edge of the sewage tank according to this utility model;

[0023] Figure 7 This is a schematic diagram of the movable support structure for the inner wall of the sewage tank according to this utility model.

[0024] In the diagram, the components are: outer baffle 1, roller 11, rubber ring 111, limiting groove 112, drive motor 12, limiting rod 13, internal fixing device 2, sewage tank inner wall support moving structure 21, extension plate 211, spring 212, cross plate 213, pulley 214, shaft 2141, shaft bracket 2142, telescopic rod 3, telescopic cylinder a31, telescopic cylinder b32, locking bolt 33, sewage tank edge support moving structure 34, and partition plate 34. 1. Pad plate 342, Pulley II 343, Shaft II 3431, Shaft bracket II 3432, Electro-hydraulic device 4. Hydraulic column 41, Base plate 42, Cleaning structure 5. Drive motor II 51, Drive shaft 511, Drive shaft disc 512, Fixing plate 52, Horizontal shaft I 53, Rotating shaft disc 531, Large gear disc 532, Cleaning brush head I 533, Horizontal shaft II 54, Turntable 541, Small gear disc 542, Cleaning brush head II 543, Shaft cylinder 55. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-7 This utility model provides a technical solution: a sewage tank inner wall cleaning device, including an outer baffle 1, an inner fixing device 2, a telescopic rod 3, an electro-hydraulic device 4, and a cleaning structure 5. The outer baffle 1 has an L-shaped plate structure and a roller 11 is rotatably connected to its lower end. A drive motor 12 is connected through the upper end of the roller 11. The drive motor 12 is fixedly installed at the upper end of the outer baffle 1, so that the entire device can move smoothly at the edge of the sewage tank, which is convenient for cleaning operations in different positions. The diameter of the roller 11 is larger than the width of the outer baffle 1 to prevent the outer baffle 1 from scraping the sewage tank, making the contact between the roller 11 and the outer wall of the sewage tank more stable.

[0027] Telescopic cylinders a31 and b32 are slidably connected at both ends of telescopic rod 3. Telescopic cylinder b32 is fixedly installed at the inner end of outer baffle 1, and telescopic cylinder a31 is fixedly installed at the inner end of inner fixing device 2. The upper ends of telescopic cylinders a31 and b32 are both connected to locking bolts 33 by threads, so that the tension of telescopic cylinders a31 and b32 can be adjusted by adjusting the locking bolts 33.

[0028] The electro-hydraulic device 4 is fixedly installed inside the inner fixing device 2. The bottom of the electro-hydraulic device 4 is connected to a hydraulic column 41. The bottom of the hydraulic column 41 is fixedly provided with a base plate 42. The cleaning structure 5 is located at the inner end of the base plate 42.

[0029] Further improvements include the outer sleeve of the roller 11 with rubber rings 111 distributed thereon, the upper end face of the roller 11 having a limiting groove 112, and the bottom front and rear ends of the outer baffle 1 being fixedly provided with limiting rods 13, which are slidably connected inside the limiting groove 112.

[0030] The rubber ring 111 increases friction, improves the stability of movement, and effectively protects the edge of the sewage tank from damage. The cooperation between the limiting groove 112 and the limiting rod 13 prevents the roller 11 from shifting, ensuring the stable movement of the device.

[0031] Further improvements include a second drive motor 51, a drive shaft disk 512, a fixed plate 52, a first horizontal shaft 53, a rotating shaft disk 531, and a first cleaning brush head 533. The second drive motor 51 is fixedly mounted on the upper end of the base plate 42, and the output end of the second drive motor 51 is connected to the drive shaft 511. The drive shaft disk 512 is fixedly mounted on the inner end of the drive shaft 511.

[0032] The cleaning structure 5 is used to fix the inner end of the support base plate 42 to clean the inner wall of the sewage tank. The drive motor 51 and drive shaft 511 are used to automatically control the rotation of the drive shaft disk 512.

[0033] The fixed plate 52 is fixedly installed at the bottom of the base plate 42. The shaft cylinder 55 is distributed inside the fixed plate 52. The horizontal shaft 53 is rotatably connected to the upper shaft cylinder 55. The rotating shaft disk 531 is fixedly installed at the inner end of the horizontal shaft 53. The cleaning brush head 533 is fixedly distributed in a ring array on the inner end face of the rotating shaft disk 531. A transmission belt is sleeved between the drive shaft disk 512 and the rotating shaft disk 531.

[0034] The drive shaft disk 512 is used to drive the rotating shaft disk 531 through the transmission belt. The rotating shaft disk 531 is used to control the rotation of the horizontal shaft 53 and the large gear disk 532. The rotating shaft disk 531 is used to drive multiple sets of cleaning brush heads 533 to effectively clean the inner wall of the sewage tank.

[0035] In a further improvement, a large gear disk 532 is fixedly provided on the outside of the horizontal shaft 53. The large gear disk 532 is located between the shaft cylinder 55 and the rotating shaft disk 531. A horizontal shaft 54 ​​is connected through the shaft cylinder 55 located below. A turntable 541 is fixedly provided on the inner end of the horizontal shaft 54. Cleaning brush heads 543 are fixedly distributed on the turntable 541. A small gear disk 542 is fixedly provided on the outside of the horizontal shaft 54. The small gear disk 542 is meshed with the large gear disk 532.

[0036] The shaft cylinder 55 is used to stably support the rotation of the first horizontal shaft 53 and the second horizontal shaft 54. The large gear plate 532 is used to mesh and control the rotation of the small gear plate 542. The small gear plate 542 is used to drive the second horizontal shaft 54 ​​and the turntable 541 to rotate. The second cleaning brush head 543 is used to further clean the inner wall of the sewage tank.

[0037] Further improvements include a sewage tank edge support moving structure 34 located at the middle of the telescopic rod 3. The sewage tank edge support moving structure 34 includes a partition 341, a pad 342, and a pulley 343. The partition 341 is fixedly located at the middle of the telescopic rod 3, the pad 342 is fixedly located at the bottom of the partition 341, and the pulley 343 is longitudinally distributed at the middle of the bottom of the pad 342. A shaft 3431 is rotatably connected through the pulley 343, and a shaft bracket 3432 is fixedly located at the outer end of the shaft 3431. The shaft bracket 3432 is fixedly located at the bottom of the pad 342.

[0038] The partition plate 341 and the pad plate 342 are used to stably support the equipment on the upper surface of the edge of the sewage tank. The second shaft bracket 3432 and the second shaft rod 3431 are used to support the second pulley 343 to slide stably, avoid jamming, enhance the stability and flexibility of the device during movement, and reduce friction with the upper surface of the sewage tank.

[0039] Specifically, the movable support structure 21 for the inner wall of the sewage tank includes an extension plate 211, a spring 212, a horizontal plate 213, and a pulley 214. The extension plate 211 is fixedly installed at the bottom inner end of the inner fixing device 2. The spring 212 is fixedly distributed at the inner end of the extension plate 211. The horizontal plate 213 is fixedly installed at the inner end of the spring 212. The pulley 214 is distributed at the inner end of the horizontal plate 213. A shaft 2141 is rotatably connected through the pulley 214. A shaft bracket 2142 is fixedly installed at the outer end of the shaft 2141. The shaft bracket 2142 is fixedly installed at the inner end of the horizontal plate 213.

[0040] The extension plate 211 is used to extend downward into the inner fixing device 2. Multiple sets of springs 212 are used to elastically support the horizontal plate 213 and multiple sets of pulleys 214. The axle frame 2142 and the shaft rod 2141 are used to stably support the rotation of the pulleys 214. The pulleys 214 enhance the stability and flexibility of the device during movement, reduce friction with the sewage tank wall, and extend the service life.

[0041] It should be noted that the specific model and specifications need to be determined based on the actual specifications of the device. The specific selection and calculation methods adopt existing technology in this field, and therefore will not be described in detail. The power supply and its principle are clear to those skilled in the art, and will not be described in detail here.

[0042] Working principle: Loosen the adjusting locking bolt 33, extend and retract the telescopic cylinders a31 and b32 at both ends of the telescopic rod 3, so that the roller 11 at the lower end of the outer baffle 1 contacts the outer wall of the sewage tank, so that the pulley 214 of the inner wall support moving structure 21 of the sewage tank contacts the inner wall of the sewage tank, and is elastically supported by multiple springs 212. After adjustment, tighten the locking bolt 33.

[0043] The pulley 343 of the edge support movable structure 34 of the sewage tank is stably supported on the upper surface of the sewage tank.

[0044] The drive motor 12 is started to automatically control the rotation of the roller 11. The roller 11 moves stably and is firmly in contact with the outer wall of the sewage tank by passing through multiple rubber rings 111.

[0045] The electric hydraulic device 4 is activated to automatically control the lifting and adjustment of the hydraulic column 41, allowing the cleaning structure 5 at the lower end of the base plate 42 to be freely adjusted in the vertical direction, enabling precise cleaning of the inner wall of the sewage tank at different depths.

[0046] The automatic control motor 51 of the cleaning structure 5 drives the drive shaft 511 and drive shaft disk 512 to rotate. Through the transmission belt, the rotating shaft disk 531 rotates, causing multiple sets of cleaning brush heads 533 to rotate and clean the inner wall of the sewage tank. At the same time, the horizontal shaft 53, which is supported inside the shaft cylinder 55, rotates stably. The large gear disk 532 meshes with the small gear disk 542 below, driving the horizontal shaft 54 ​​and the turntable 541 to rotate stably. This allows multiple sets of cleaning brush heads 543 to rotate simultaneously and clean the inner wall of the sewage tank, enhancing the comprehensiveness and uniformity of cleaning, effectively avoiding cleaning dead corners, and ensuring that ideal cleaning results can be achieved in sewage tanks of various sizes.

[0047] This utility model includes an outer baffle 1, roller 11, rubber ring 111, limiting groove 112, drive motor 12, limiting rod 13, internal fixing device 2, sewage tank inner wall support and moving structure 21, extension plate 211, spring 212, cross plate 213, pulley 214, shaft 2141, shaft frame 2142, telescopic rod 3, telescopic cylinder a31, telescopic cylinder b32, locking bolt 33, sewage tank edge support and moving structure 34, partition 341, pad 342, pulley 243, and shaft 2. 3431, Shaft Frame II; 3432, Electro-hydraulic Device; 4, Hydraulic Column; 41, Base Plate; 42, Cleaning Structure; 5, Drive Motor II; 51, Drive Shaft; 511, Drive Shaft Disc; 512, Fixing Plate; 52, Horizontal Shaft I; 53, Rotating Shaft Disc; 531, Large Gear Disc; 532, Cleaning Brush Head I; 533, Horizontal Shaft II; 54, Turntable; 541, Small Gear Disc; 542, Cleaning Brush Head II; 543, Shaft Cylinder; 55. All components are general standard parts or parts known to those skilled in the art, and their structure and principle are readily understood by those skilled in the art. According to technical manuals or conventional experimental methods, the problem solved by this invention is that manual cleaning is prone to fatigue and difficult to thoroughly clean sewage tanks. Adding large amounts of chemical reagents to sewage tanks to dissolve dirt can lead to direct discharge and environmental pollution. This invention, through the combination of the above-mentioned components, uses telescopic cylinders a31 and b32 slidably connected at both ends of the telescopic rod 3 to facilitate the adjustment of the distance between the outer baffle 1 and the inner fixing device 2, making it suitable for sewage tanks of different thicknesses. The roller assembly set at the lower end of the outer baffle 1 facilitates automated control of the rollers located outside the sewage tank, thereby controlling the entire equipment to move in a ring around the outer edge of the sewage tank. The cleaning structure 5 connected to the bottom of the electro-hydraulic device 4 and the hydraulic column 41 can be freely adjusted in the vertical direction, enabling precise cleaning of the inner walls of sewage tanks of different depths, improving cleaning efficiency, enhancing the comprehensiveness and uniformity of cleaning, effectively avoiding cleaning dead corners, and ensuring ideal cleaning results in sewage tanks of various sizes.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sewage pool inner wall cleaning device, comprising an outer fender (1), an inner fixing device (2), an extension rod (3), an electric hydraulic device (4) and a cleaning structure (5), characterized in that: The outer fender (1) is L-shaped plate structure and the lower end is rotatably connected with a roller (11), the upper end of the roller (11) is connected with a drive motor (12), the drive motor (12) is fixedly arranged on the upper end of the outer fender (1), the diameter of the roller (11) is greater than the width of the outer fender (1); The both ends of the telescopic rod (3) are slidably connected with telescopic cylinder a (31) and telescopic cylinder b (32), the telescopic cylinder b (32) is fixedly arranged on the inner end of the outer fender (1), the telescopic cylinder a (31) is fixedly arranged on the inner end of the inner fixing device (2), the upper ends of the telescopic cylinder a (31) and the telescopic cylinder b (32) are threadedly connected with locking bolts (33); The electric hydraulic device (4) is fixedly arranged in the inner fixing device (2), the bottom of the electric hydraulic device (4) is connected with a hydraulic column (41), the bottom of the hydraulic column (41) is fixedly arranged with a bottom plate (42), the cleaning structure (5) is arranged on the inner end of the bottom plate (42).

2. A device for cleaning the interior walls of a sewage tank as claimed in claim 1 wherein: The outer part of the roller (11) is sleeved with a rubber ring (111), the upper end surface of the roller (11) is provided with a limiting groove (112), the bottom of the outer fender (1) is fixedly arranged with a limiting rod (13), the limiting rod (13) is slidably connected in the limiting groove (112).

3. A device for cleaning the interior walls of a sewage tank as claimed in claim 1, wherein: The cleaning structure (5) comprises a drive motor (51), a drive shaft disc (512), a fixed plate (52), a horizontal shaft (53), a rotating shaft disc (531), a cleaning brush head (533) and a shaft cylinder (55), the drive motor (51) is fixedly arranged on the upper end of the bottom plate (42), the output end of the drive motor (51) is connected with a drive shaft (511), the drive shaft disc (512) is fixedly arranged on the inner end of the drive shaft (511); The fixed plate (52) is fixedly arranged on the bottom of the bottom plate (42), the shaft cylinder (55) is arranged in the inner part of the fixed plate (52), the horizontal shaft (53) is rotatably connected with the upper shaft cylinder (55), the rotating shaft disc (531) is fixedly arranged on the inner end of the horizontal shaft (53), the cleaning brush head (533) is annularly arranged on the inner end surface of the rotating shaft disc (531), the drive shaft disc (512) and the rotating shaft disc (531) are sleeved with a transmission belt.

4. A device for cleaning the interior walls of a sewage tank as claimed in claim 3 wherein: The outer part of the horizontal shaft (53) is fixedly arranged with a large gear disc (532), the large gear disc (532) is arranged between the shaft cylinder (55) and the rotating shaft disc (531), the inner part of the lower shaft cylinder (55) is connected with a horizontal shaft (54), the inner end of the horizontal shaft (54) is fixedly arranged with a rotating disc (541), the rotating disc (541) is fixedly arranged with a cleaning brush head (543), the outer part of the horizontal shaft (54) is fixedly arranged with a small gear disc (542), the small gear disc (542) is meshingly connected with the large gear disc (532).

5. A device for cleaning the interior walls of a sewage tank according to claim 1, characterized in that: The sewage pool edge support moving structure (34) is arranged at the middle of the telescopic rod (3), and comprises a partition plate (341), a backing plate (342) and a pulley two (343).

6. A device for cleaning the interior walls of a sewage tank according to claim 1, characterized in that: The sewage pool inner wall support moving structure (21) comprises an extension plate (211), a spring (212), a horizontal plate (213) and a pulley one (214). The extension plate (211) is fixedly arranged at the inner end of the bottom of the inner fixing device (2). The spring (212) is fixedly arranged at the inner end of the extension plate (211). The horizontal plate (213) is fixedly arranged at the inner end of the spring (212). The pulley one (214) is arranged at the inner end of the horizontal plate (213). The inner part of the pulley one (214) is rotatably connected with a shaft one (2141). The outer end of the shaft one (2141) is fixedly arranged with a shaft support one (2142). The shaft support one (2142) is fixedly arranged at the inner end of the horizontal plate (213).

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