A perimeter drive mud scraper

Abstract

The utility model discloses a kind of peripheral drive mud scraper, it is related to sewage treatment mud scraper technical field. Including sludge lagoon and the central shaft located in the inside of sludge lagoon, the inside fixed mounting of central shaft top end has drive motor, the output of drive motor is fixedly installed with work bridge, the bottom of work bridge is equipped with cleaning assembly, and cleaning assembly includes loose unit and mud scraping unit, and the loose tooth of two staggered settings in cleaning assembly can be fully and evenly loose to sludge first, expand loose range, then by scraper, sludge after loosening is efficiently scraped, this loose and then scraping orderly operation mode, improve mud scraping efficiency, avoid that scraper is directly scraped hard sludge and intensifies abrasion, prolongs equipment service life, realizes the accurate efficient cooperation of loosening and scraping operation, further guarantee the effect of sludge cleaning and the stability of equipment operation.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge scrapers for sewage treatment, and specifically to a peripheral drive sludge scraper. Background Technology

[0002] Peripheral drive sludge scrapers are commonly used sludge scraping equipment in sedimentation tanks of urban water plants and town sewage treatment plants. Their main features include the use of a cycloidal pinwheel reducer and worm gearbox drive, resulting in high torque transmission, good stability, convenient installation, simple maintenance, torque protection, reliable operation, thorough sludge removal, and a full range of specifications.

[0003] A search revealed that patent number CN217246979U discloses a peripheral drive sludge scraper, including a sedimentation tank and a central shaft. In this invention, through the sludge loosening mechanism and the sludge scraping mechanism, when cleaning the sludge at the bottom of the sedimentation tank, the scraper claws at the bottom of the sludge loosening mechanism contact the sludge at the bottom of the sedimentation tank and scrape away the stubborn sludge, making it easier for the sludge scraping mechanism to concentrate the sludge, which is beneficial for the efficient purification of the sedimentation tank.

[0004] While the aforementioned patent facilitates the cleaning of sludge in sedimentation tanks, the simultaneous cleaning operation of the scraper's claws and scraper blades means that sludge not sufficiently loosened by the claws will cause the scraper blades to face greater resistance and load during scraping. This not only accelerates the wear of the scraper blades and shortens their service life, but may also lead to deformation, loosening, or even breakage of the scraper blades due to uneven force, thereby affecting the scraping effect and efficiency, increasing equipment maintenance costs, and the risk of downtime for repairs. Utility Model Content

[0005] The main purpose of this utility model is to provide a peripheral drive sludge scraper to overcome the problems existing in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A peripheral drive sludge scraper includes a sludge tank and a central shaft located inside the sludge tank. A drive motor is fixedly installed inside the top of the central shaft, and a working bridge is fixedly installed at the output end of the drive motor. A cleaning component is provided at the bottom of the working bridge, and the cleaning component includes a loosening unit and a sludge scraping unit. The loosening unit includes loosening teeth, which are used to fully loosen the sludge; The sludge scraping unit includes a scraper, which is used to scrape off loose sludge.

[0007] Furthermore, a support frame is fixedly installed at the bottom of the working bridge, and a mounting frame is fixedly installed at the bottom of the support frame. The scraper and loosening teeth are both located at the bottom of the mounting frame.

[0008] Furthermore, two loose teeth are set, and the two loose teeth are set in a staggered manner.

[0009] Furthermore, two cylinders are fixedly installed on the top of the mounting frame, and a first movable frame and a second movable frame are provided inside the mounting frame. The output ends of the two cylinders pass through one side of the mounting frame and are fixedly connected to the top of the first movable frame and the second movable frame, respectively.

[0010] Furthermore, two limiting grooves are provided on both sides of the inner wall of the mounting frame, and the two sides of the first and second movable frames are slidably connected to the corresponding limiting grooves.

[0011] Through the above technical solution, the two staggered loosening teeth in the cleaning component can first fully and evenly loosen the sludge, expand the loosening range, and then the scraper can efficiently scrape off the loosened sludge.

[0012] Furthermore, connecting plates are fixedly installed on the top of both the scraper and the loosening teeth, and positioning slots are opened inside both the first and second moving frames, with each connecting plate being inserted into the corresponding positioning slot.

[0013] Furthermore, each connecting plate has multiple threaded holes inside, and each positioning groove has multiple threaded grooves on its inner wall.

[0014] Furthermore, each connecting plate has multiple locking bolts on one side, and each locking bolt is threaded through the corresponding threaded hole and then threadedly connected to the corresponding threaded groove.

[0015] The above technical solution, with its detachable connection structure, facilitates the later inspection and replacement of the scraper and loosening teeth, greatly improving the convenience and flexibility of equipment maintenance.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By using two staggered loosening teeth in the cleaning component, the sludge can be fully and evenly loosened first, expanding the loosening range. Then, the scraper efficiently scrapes away the loosened sludge. This orderly operation mode of loosening first and then scraping not only improves the sludge scraping efficiency, but also avoids the scraper from being worn down by directly scraping hard sludge, thus extending the service life of the equipment. At the same time, two cylinders drive the first and second moving frames respectively. With the precise guidance of the limiting slide, the extension and retraction state and movement trajectory of the loosening teeth and the scraper can be stably and accurately controlled, ensuring that both always keep in contact with the inner wall of the sludge tank without deviation. This achieves precise and efficient coordination between loosening and scraping operations, further ensuring the sludge cleaning effect and the stability of equipment operation. The quick positioning of components is achieved through the insertion and connection of the positioning slot and the connecting plate, ensuring centering during installation and facilitating efficient assembly. The threaded connection of multiple locking bolts provides a stable connection strength, preventing the scraper and loosening teeth from loosening and falling off due to stress during operation. At the same time, this detachable connection structure also facilitates the later inspection and replacement of the scraper and loosening teeth, greatly improving the convenience and flexibility of equipment maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the overall structure of the working bridge of this utility model; Figure 4 This is a schematic diagram of the overall structure of the mounting bracket of this utility model; Figure 5 This is a schematic diagram of the internal structure of the mounting bracket of this utility model; Figure 6 This is a schematic diagram of the scraper connection structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Sludge tank; 2. Central shaft; 3. Working bridge; 4. Support frame; 5. Mounting frame; 6. Scraper; 7. Loosening teeth; 8. First moving frame; 9. Second moving frame; 10. Cylinder; 11. Limiting slide groove; 12. Connecting plate; 13. Locking bolt; 14. Threaded hole; 15. Threaded groove; 16. Positioning groove; 17. Drive motor. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] Combination Figures 1 to 6 This utility model provides a peripheral drive sludge scraper, including a sludge tank 1 and a central shaft 2 located inside the sludge tank 1. A drive motor 17 is fixedly installed inside the top of the central shaft 2, and a working bridge 3 is fixedly installed at the output end of the drive motor 17. A cleaning component is provided at the bottom of the working bridge 3. The cleaning component includes a loosening unit and a sludge scraping unit. The loosening unit includes loosening teeth 7, which are used to fully loosen the sludge. The sludge scraping unit includes a scraper 6, which is used to scrape off the loosened sludge.

[0021] Reference Figures 1-6A support frame 4 is fixedly installed at the bottom of the working bridge 3, and an installation frame 5 is fixedly installed at the bottom of the support frame 4. The scraper 6 and the loosening teeth 7 are both located at the bottom of the installation frame 5. Two loosening teeth 7 are provided, and the two loosening teeth 7 are staggered. Two cylinders 10 are fixedly installed at the top of the installation frame 5. The interior of the installation frame 5 is provided with a first moving frame 8 and a second moving frame 9. The output ends of the two cylinders 10 pass through one side of the installation frame 5 and are fixedly connected to the top of the first moving frame 8 and the second moving frame 9 respectively. Two limiting slide grooves 11 are opened on both sides of the inner wall of the installation frame 5. The sides of the first moving frame 8 and the second moving frame 9 are slidably connected to the corresponding limiting slide grooves 11 respectively.

[0022] The cleaning component can drive the scraper 6 to scrape off the sludge after the loosening teeth 7 have fully loosened it. The specific operation method is as follows: First, the cylinder 10 corresponding to the second moving frame 9 at the top of the mounting frame 5 is started and extended, pushing the second moving frame 9 to slide down along the limiting slide groove 11, so that the two loosening teeth 7 connected to the bottom of the second moving frame 9 are attached to the inner wall of the sludge tank 1 and move downward. With the help of the loosening teeth 7 with the staggered layout, the loosening range can be expanded and the sludge can be loosened more evenly and fully. At this time, the cylinder 10 corresponding to the first moving frame 8 retracts, driving the first moving frame 8 to slide upward along the limiting slide groove 11, so that the scraper 6 is retracted and removed from the sludge surface, thus avoiding the scraper 6 from directly contacting the hard sludge when the sludge is not loosened and thus aggravating wear. After the loosening teeth 7 complete the sludge loosening operation, the cylinder 10 corresponding to the second moving frame 9 retracts, pulling the second moving frame 9 upward along the limiting slide groove 11 to retract the loosening teeth 7. At the same time, the cylinder 10 corresponding to the first moving frame 8 extends, pushing the first moving frame 8 downward along the limiting slide groove 11, allowing the scraper 6 to move downward against the inner wall of the sludge tank 1, efficiently scraping away the loose sludge pretreated by the loosening teeth 7.

[0023] Among them, the limiting slide 11 can accurately guide the movement direction of the first moving frame 8 and the second moving frame 9, ensuring that the loosening teeth 7 and the scraper 6 are stably attached to the pool wall without deviation; the cylinder 10 has stable power and rapid response, and can flexibly control the extension and retraction of the loosening teeth 7 and the scraper 6 to achieve orderly cooperation between the two; at the same time, the two staggered loosening teeth 7 improve the overall loosening of sludge, and the scraper 6 can efficiently scrape off the sludge after loosening. This orderly operation mode of loosening first and then scraping off not only improves the sludge scraping efficiency, but also reduces the wear of the scraper 6 and extends the service life of the equipment.

[0024] The output ends of two cylinders 10 are directly connected to the first movable frame 8 and the second movable frame 9, respectively. The extension and retraction of the piston rod of the cylinder 10 provides a stable and controllable linear driving force, which can precisely adjust the lifting stroke of the first movable frame 8 and the second movable frame 9. At the same time, the two sides of the first movable frame 8 and the second movable frame 9 are respectively embedded in the limiting slide groove 11 on the inner wall of the mounting frame 5. The limiting slide groove 11 strictly restricts the movement trajectory of the movable frame, so that it can only slide vertically up and down along the slide groove and cannot be laterally offset. This ensures that the scraper 6 connected to the bottom of the first movable frame 8 and the loosening teeth 7 at the bottom of the second movable frame 9 can always maintain a close fit with the inner wall of the sludge tank 1 under the drive of the cylinder 10, avoiding the problem of loose fit due to shaking or offset, and finally achieving precise and efficient loosening and scraping operations.

[0025] By using two staggered loosening teeth 7 in the cleaning component, the sludge can be fully and evenly loosened first, expanding the loosening range. Then, the scraper 6 efficiently scrapes away the loosened sludge. This orderly operation mode of loosening first and then scraping not only improves the sludge scraping efficiency, but also avoids the scraper 6 from being over-worn due to directly scraping hard sludge, thus extending the service life of the equipment. At the same time, two cylinders 10 drive the first moving frame 8 and the second moving frame 9 respectively. With the precise guidance of the limiting slide groove 11, the extension and retraction state and movement trajectory of the loosening teeth 7 and the scraper 6 can be stably and accurately controlled, ensuring that the two always adhere to the inner wall of the sludge tank 1 without deviation. This achieves precise and efficient coordination between loosening and scraping operations, further ensuring the sludge cleaning effect and the stability of equipment operation.

[0026] Reference Figure 6 A connecting plate 12 is fixedly installed on the top of both the scraper 6 and the loosening tooth 7. The first moving frame 8 and the second moving frame 9 are both provided with positioning grooves 16. Each connecting plate 12 is inserted into the corresponding positioning groove 16. Each connecting plate 12 is provided with multiple threaded holes 14. The inner wall of each positioning groove 16 is provided with multiple threaded grooves 15. Each connecting plate 12 is provided with multiple locking bolts 13 on one side. Each locking bolt 13 is threaded through the corresponding threaded hole 14 and then threadedly connected to the corresponding threaded groove 15.

[0027] The scraper 6 and loosening teeth 7 are connected to the positioning slots 16 of the first moving frame 8 and the second moving frame 9 via the connecting plate 12, and are threadedly connected by locking bolts 13 through the threaded holes 14 and threaded grooves 15. This structure enables rapid positioning of components by using the insertion and cooperation of the positioning slots 16 and the connecting plate 12, ensuring centering during installation and facilitating efficient assembly. The threaded connection of multiple locking bolts 13 provides a stable connection strength, preventing the scraper 6 and loosening teeth 7 from loosening and falling off due to stress during operation. At the same time, this detachable connection structure also facilitates the later inspection and replacement of the scraper 6 and loosening teeth 7, greatly improving the convenience and flexibility of equipment maintenance.

[0028] Working principle: First, the drive motor 17 starts and drives the working bridge 3 to make a circular motion around the central axis 2 in the sludge tank 1, while the cleaning component moves synchronously with the working bridge 3. At the beginning of the operation, the cylinder 10 corresponding to the second moving frame 9 at the top of the mounting frame 5 extends, pushing the second moving frame 9 to slide downward along the limiting slide groove 11. This causes the two misaligned loosening teeth 7, which are connected to the bottom of the second moving frame 9, inserted into the positioning groove 16 through the connecting plate 12 and fixed by the locking bolt 13, to move downward against the inner wall of the sludge tank 1, so as to loosen the sludge at the bottom of the tank evenly. At this time, the cylinder 10 corresponding to the first moving frame 8 retracts, causing the first moving frame 8 to slide upward along the limiting slide groove 11. This allows the scraper 6, which is also fixed to the bottom of the first moving frame 8 through the connecting plate 12, positioning groove 16 and locking bolt 13, to retract and detach from the sludge surface, so as to prevent the scraper 6 from contacting the unloosened hard sludge. After the loosening tooth 7 completes the loosening operation, the cylinder 10 corresponding to the second moving frame 9 retracts, retracting the loosening tooth 7 upwards. At the same time, the cylinder 10 corresponding to the first moving frame 8 extends, pushing the first moving frame 8 to slide downwards, causing the scraper 6 to move downwards against the inner wall of the sludge tank 1, efficiently scraping away the loosened sludge. Throughout the process, the limiting slide 11 ensures that the movement trajectory of the first moving frame 8 and the second moving frame 9 is stable and does not deviate. The cooperation between the connecting plate 12 and the positioning groove 16 ensures the alignment of the scraper 6 and the loosening teeth 7 during installation. The locking bolt 13 ensures that the connection is secure, ultimately achieving efficient cleaning of sludge in the sludge tank 1.

[0029] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A peripheral drive sludge scraper, characterized in that, It includes a sludge tank (1) and a central shaft (2) located inside the sludge tank (1). A drive motor (17) is fixedly installed inside the top of the central shaft (2). A working bridge (3) is fixedly installed at the output end of the drive motor (17). A cleaning component is provided at the bottom of the working bridge (3). The cleaning component includes a loosening unit and a sludge scraping unit. The loosening unit includes loosening teeth (7), which are used to fully loosen the sludge; The sludge scraping unit includes a scraper (6) for scraping off loose sludge.

2. The peripheral drive sludge scraper according to claim 1, characterized in that, The bottom of the working bridge (3) is fixedly installed with a support frame (4), and the bottom of the support frame (4) is fixedly installed with a mounting frame (5). The scraper (6) and the loosening teeth (7) are both located at the bottom of the mounting frame (5).

3. A peripheral drive scraper according to claim 1, characterized in that, The number of loose teeth (7) is set to two, and the two loose teeth (7) are staggered.

4. A peripheral drive scraper according to claim 2, characterized in that, Two cylinders (10) are fixedly installed on the top of the mounting bracket (5). The mounting bracket (5) has a first movable bracket (8) and a second movable bracket (9) inside. The output ends of the two cylinders (10) pass through one side of the mounting bracket (5) and are fixedly connected to the top of the first movable bracket (8) and the second movable bracket (9) respectively.

5. A peripheral drive scraper according to claim 4, characterized in that, The mounting bracket (5) has two limiting grooves (11) on both sides of its inner wall. The first movable bracket (8) and the second movable bracket (9) are slidably connected to the corresponding limiting grooves (11) on both sides.

6. A peripheral drive scraper according to claim 4, characterized in that, The top of the scraper (6) and the loosening teeth (7) are both fixedly installed with connecting plates (12). The first moving frame (8) and the second moving frame (9) are both provided with positioning grooves (16). Each connecting plate (12) is inserted into the corresponding positioning groove (16).

7. A peripheral drive sludge scraper according to claim 6, characterized in that, Each of the connecting plates (12) has multiple threaded holes (14) inside, and each of the positioning grooves (16) has multiple threaded grooves (15) on its inner wall.

8. A peripheral drive sludge scraper according to claim 7, characterized in that, Each of the connecting plates (12) has multiple locking bolts (13) on one side. Each locking bolt (13) is threaded through the corresponding threaded hole (14) and then threadedly connected to the corresponding threaded groove (15).

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