A sludge scraper capable of cleaning the inner wall

Abstract

The utility model relates to the field of environmental protection equipment especially, a kind of sludge scraper that can clean the sludge of inner wall, including treatment pond, the treatment pond is connected with the access bridge, the access bridge bottom is equipped with conveying assembly, the conveying assembly bottom is equipped with sludge scraper, the sludge scraper rotation is connected in the bottom of treatment pond, the treatment pond is equipped with controller, the controller is wiredly connected with the conveying assembly, the sludge scraper end is connected with mounting plate, the mounting plate side rotation is connected with the shaft towards the inner wall of the treatment pond, the shaft middle part is connected with scraper, the scraper is slidably connected with the treatment pond, the conveying assembly left and right sides are provided with the cleaning assembly for cleaning the scraper. By the rotation connection of scraper and shaft, the angle of scraper is automatically adjusted with the curved surface of the inner wall of treatment pond, realize the close adhesion with inner wall, so as to effectively scrape off the sludge of inner wall, reach the purpose of improving pool wall cleanliness.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment, and in particular to a sludge scraper that can clean sludge from the inner wall. Background Technology

[0002] Sludge scrapers are key equipment in wastewater treatment, industrial wastewater treatment, and tap water purification, primarily used to remove sludge and surface scum deposited at the bottom of circular sedimentation tanks. They push the sludge to a collection trough for discharge via a rotating scraper, simultaneously collecting scum to ensure efficient sedimentation tank operation. A typical structure includes a drive unit, working bridge, scraper blades, and a central turntable, and is divided into peripheral drive and central drive types. Central drive scrapers are often equipped with a guide tube and overflow device to increase sludge concentration. The scraper blades often employ a logarithmic spiral curve design, combined with stainless steel underwater components and hot-dip galvanized above-water components, balancing corrosion resistance and strength, making them suitable for complex environments such as urban sewage and industrial wastewater treatment.

[0003] Among existing sludge scraper technologies, the vertical frame-type center-drive sludge scraper is a representative piece of equipment. It uses a drive motor to rotate a rotating column, which in turn drives a rake frame to move along the bottom of the tank, pushing the sludge to the central discharge area. Fixed scraper blades prevent clogging of the discharge port, but the scraper blades cannot be raised or lowered, and long-term use can easily lead to overload of the drive motor due to sludge accumulation. In addition, peripheral drive sludge scrapers achieve full tank coverage through the rotation of a working bridge, but due to structural limitations, there are gaps between the scraper blades and the tank walls, making it difficult to thoroughly clean the sludge adhering to the inner walls.

[0004] However, existing sludge scrapers generally suffer from the technical bottleneck of inadequate internal wall cleaning. Traditional designs focus on scraping sludge from the bottom of the tank, but the gap between the scraper blade and the tank wall prevents the removal of residual sludge. Furthermore, high-viscosity sludge tends to clump on the tank walls, exacerbating the cleaning difficulty. In current technologies, internal wall sludge requires manual cleaning or additional equipment, which not only increases operating costs and poses safety risks but also fails to meet the demands of continuous automated operation. Utility Model Content

[0005] To overcome the shortcomings of inadequate internal wall cleaning, this utility model provides a sludge scraper for cleaning internal wall sludge, aiming to solve the aforementioned shortcomings.

[0006] A sludge scraper for cleaning sludge from the inner wall includes a treatment tank, an inspection bridge connected to the treatment tank, a conveying assembly installed at the bottom of the inspection bridge, a sludge scraper installed at the bottom of the conveying assembly, the sludge scraper being rotatably connected to the bottom of the treatment tank, a controller installed in the treatment tank, the controller being wired to the conveying assembly, an installation plate connected to the end of the sludge scraper, a rotating shaft rotatably connected to the side of the installation plate facing the inner wall of the treatment tank, a scraper connected to the middle of the rotating shaft, the scraper being slidably connected to the treatment tank, and cleaning components for cleaning the scraper being provided on the left and right sides of the conveying assembly.

[0007] Optionally, the cleaning assembly includes a connecting frame, a linear motor mounted on the side of the mounting plate facing the scraper, the connecting frame being slidably connected to the mounting plate, the linear motor driving the connecting frame to slide up and down, a spray frame connected to the connecting frame facing the scraper, a connecting pipe connected to the end of the spray frame, the connecting pipe being used to connect to an external water source, protective covers slidably connected to both sides of the mounting plate, and the two protective covers enclosing the spray frame and the linear motor, and a plurality of fixing screws threadedly connected to the connection between the mounting plate and the protective covers.

[0008] Optionally, a rubber gasket is connected to one end of the protective cover that is inserted into the mounting plate.

[0009] Optionally, a protective plug is provided at the internal hexagonal hole of the fixing screw.

[0010] Optionally, one of the protective covers is connected to a sealing block, and the other protective cover has a groove corresponding to the sealing block.

[0011] Optionally, the protective cover is equipped with handles on both the top and sides.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By rotating the scraper and the shaft, the scraper automatically adjusts its angle to fit the curved surface of the inner wall of the treatment tank, thus achieving a close fit with the inner wall and effectively scraping away the sludge, thereby improving the cleanliness of the tank wall.

[0013] 2. By setting up multiple sets of inclined nozzles on the spray frame, and cooperating with the clean water delivery through the connecting pipe, the water flow spreads in a fan shape to cover the inner wall area, forming a flushing and scraping collaborative operation mode with the scraper, thereby improving the sludge stripping efficiency, reducing the risk of high-viscosity sludge caking, and achieving the goal of reducing the frequency of manual cleaning.

[0014] 3. By sliding the protective cover and mounting plate together and using the wedge-shaped interference fit of the sealing block, combined with the honeycomb elastic seal of the rubber gasket, a double protective structure is formed. This allows the protective cover to completely seal the linear motor and spray frame when the equipment is idle or when only the middle area is scraped, thereby achieving dust and water protection for the components, avoiding external environmental pollution or accidental damage, and extending the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the installation structure of the mounting plate and scraper of this utility model.

[0017] Figure 3This is an exploded view showing the connection relationship between the protective cover and the fixing screws of this utility model.

[0018] Figure 4 This is a cross-sectional view showing the connection relationship between the fixing screw and the sealing gasket of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1: Treatment pool, 2: Inspection bridge, 3: Conveying assembly, 4: Sludge scraper, 5: Controller, 6: Mounting plate, 7: Scraper, 8: Rotary shaft, 9: Linear motor, 10: Connecting frame, 11: Spray frame, 12: Connecting pipe, 13: Protective cover, 14: Fixing screw, 15: Rubber gasket, 16: Protective plug, 17: Sealing block, 18: Handle. Detailed Implementation

[0020] The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0021] Example: A sludge scraper for cleaning sludge from inner walls, such as... Figures 1-4 As shown, the system includes a treatment tank 1, an inspection bridge 2, a conveying assembly 3, a sludge scraper 4, a controller 5, a mounting plate 6, a scraper 7, a rotating shaft 8, and a cleaning assembly. The inspection bridge 2 is connected to the treatment tank 1, and the conveying assembly 3 is installed at the bottom of the inspection bridge 2. The sludge scraper 4 is installed at the bottom of the conveying assembly 3 via a flange structure. The sludge scraper 4 is rotatably connected to the bottom of the treatment tank 1 via a bearing assembly. The controller 5 is installed in the treatment tank 1 and is wired to the conveying assembly 3. The mounting plate 6 is connected to the end of the sludge scraper 4. The rotating shaft 8 is rotatably connected to the side of the mounting plate 6 facing the inner wall of the treatment tank 1. The scraper 7 is connected to the middle of the rotating shaft 8 and is slidably connected to the treatment tank 1. The scraper 7 is made of elastic rubber material wrapped around a metal frame structure, which maintains scraping force while avoiding hard damage when conforming to the curved surface of the inner wall, thus improving the service life of the equipment. Cleaning assemblies for cleaning the scraper 7 are provided on the left and right sides of the conveying assembly 3.

[0022] like Figures 2-4 As shown, the cleaning assembly includes a linear motor 9, a connecting frame 10, a spray frame 11, a connecting pipe 12, a protective cover 13, and fixing screws 14. The linear motor 9 is mounted on the side of the mounting plate 6 facing the scraper 7. The connecting frame 10 is slidably connected to the mounting plate 6 via the guide rail of the linear motor 9. The linear motor 9 is used to drive the connecting frame 10 to slide up and down. The spray frame 11 is connected to the connecting frame 10 facing the scraper 7. The end of the spray frame 11 is connected to the connecting pipe 12, which is used to connect to an external water source. The spray frame 11 is equipped with multiple sets of inclined nozzles, and the water flow spreads in a fan shape to cover the inner wall area. It works with the scraper 7 to form a flushing and scraping cooperative operation mode to improve the sludge removal efficiency. The protective covers 13 are slidably connected to both sides of the mounting plate 6. The two protective covers 13 completely wrap the spray frame 11 and the linear motor 9 through a sliding sealing structure. Several fixing screws 14 are threadedly connected at the connection between the mounting plate 6 and the protective cover 13.

[0023] like Figure 4 As shown, it also includes a rubber pad 15. One end of the protective cover 13 inserted into the mounting plate 6 is connected to the rubber pad 15. The rubber pad 15 adopts a honeycomb structure design, which forms multiple sealing interfaces during the compression and rebound process, effectively preventing dust and moisture from entering the mechanical parts.

[0024] like Figure 4 As shown, it also includes a protective plug 16. A protective plug 16 is provided at the internal hexagonal hole of the fixing screw 14. The protective plug 16 is made of transparent silicone material, which prevents foreign objects from blocking the internal hexagonal hole.

[0025] like Figure 4 As shown, it also includes a sealing block 17. A protective cover 13 is connected to the sealing block 17, and another protective cover 13 has a groove corresponding to the sealing block 17. The sealing block 17 has a wedge-shaped structure design, which produces a self-locking effect when it forms an interference fit with the groove.

[0026] like Figure 3 As shown, it also includes a handle 18. The top and sides of the protective cover 13 are connected to the handle 18. The handle 18 adopts an ergonomic streamlined design and has a ball head at the end, which makes it comfortable to hold and prevents slipping during operation.

[0027] Staff initiate the control program via controller 5, setting operating parameters and monitoring the system status in real time. The sludge scraper 4 rotates at a stable speed, its bottom scraper 7 contacting the sludge at the bottom of the treatment tank 1, pushing the deposited sludge to the collection area through a rotating scraping action. Simultaneously, the conveying assembly 3 starts, continuously transporting the sludge to the discharge port via its built-in chain drive mechanism, ensuring smooth and unobstructed sludge transfer.

[0028] When the sludge scraper 4 rotates, the scraper 7 contacts the inner wall of the treatment tank 1 and automatically adjusts its angle according to the curved shape of the inner wall. The rotating shaft 8 rotates adaptively according to the curvature of the inner wall, ensuring that the scraper 7 always maintains a tight fit with the inner wall, achieving efficient sludge scraping. While scraping away the sludge from the inner wall, the friction between the scraper 7 and the inner wall ensures that the sludge is effectively removed, avoiding residue.

[0029] Linear motor 9 drives connecting frame 10 to slide up and down along mounting plate 6, causing spray frame 11 to move synchronously. Clean water is input into spray frame 11 through connecting pipe 12 and sprayed in a fan shape through inclined nozzles onto the inner wall of treatment tank 1, forming a water film that wets the inner wall and the surface of scraper 7. When the wet scraper 7 scrapes off sludge, the water film acts as a lubricant and assists in peeling, improving sludge removal efficiency and reducing direct wear between scraper 7 and the inner wall.

[0030] After the sludge scraping operation is completed, the worker holds the handles 18 on the top of the protective cover 13 with both hands and aligns the two protective covers 13 with the sliding grooves on both sides of the mounting plate 6. One end forms a wedge-shaped interference fit with the groove of the other protective cover 13 through the sealing block 17, and the other end is inserted into the mounting plate 6. The rubber gasket 15 is compressed and undergoes elastic deformation to form a sealing interface. Then, the fixing screws 14 are screwed in to lock it, ensuring that the protective cover 13 completely seals the linear motor 9 and the spray frame 11. Finally, the protective plugs 16 are inserted into the hexagonal holes of the fixing screws 14 to prevent dust or foreign objects from clogging the holes and to ensure the convenience of subsequent maintenance. When the equipment is idle or only the middle area needs to be scraped, the protective cover 13 effectively isolates the external environment and prevents the parts from being contaminated or accidentally damaged.

[0031] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A sludge scraper for cleaning sludge from the inner wall, characterized in that, The system includes a treatment tank (1), a maintenance bridge (2) connected to the treatment tank (1), a conveying assembly (3) installed at the bottom of the maintenance bridge (2), a sludge scraper (4) installed at the bottom of the conveying assembly (3), the sludge scraper (4) being rotatably connected to the bottom of the treatment tank (1), a controller (5) installed in the treatment tank (1), the controller (5) being wired to the conveying assembly (3), an installation plate (6) connected to the end of the sludge scraper (4), a rotating shaft (8) rotatably connected to the side of the installation plate (6) facing the inner wall of the treatment tank (1), a scraper (7) connected to the middle of the rotating shaft (8), the scraper (7) being slidably connected to the treatment tank (1), and cleaning components for cleaning the scraper (7) provided on the left and right sides of the conveying assembly (3).

2. A sludge scraper for cleaning sludge from the inner wall according to claim 1, characterized in that, The cleaning assembly includes a connecting frame (10), a linear motor (9) is mounted on the side of the mounting plate (6) facing the scraper (7), the connecting frame (10) is slidably connected to the mounting plate (6), the linear motor (9) is used to drive the connecting frame (10) to slide up and down, the connecting frame (10) is connected to a spray frame (11) facing the scraper (7), the end of the spray frame (11) is connected to a connecting pipe (12), the connecting pipe (12) is used to connect to an external water source, the left and right sides of the mounting plate (6) are slidably connected to protective covers (13), and the two protective covers (13) close the spray frame (11) and the linear motor (9), and the connection between the mounting plate (6) and the protective cover (13) is threaded with several fixing screws (14).

3. A sludge scraper for cleaning inner wall sludge according to claim 2, characterized in that, The protective cover (13) is inserted into the mounting plate (6) at one end and is connected to a rubber pad (15).

4. A sludge scraper for cleaning inner wall sludge according to claim 3, characterized in that, A protective plug (16) is provided at the internal hexagonal hole of the fixing screw (14).

5. A sludge scraper for cleaning sludge from the inner wall according to claim 4, characterized in that, One of the protective covers (13) is connected to a sealing block (17), and the other protective cover (13) has a groove corresponding to the sealing block (17).

6. A sludge scraper for cleaning sludge from the inner wall according to claim 5, characterized in that, The protective cover (13) has handles (18) on its top and sides.

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