A sludge removal mechanism at the bottom of a water treatment tank

Abstract

This utility model discloses a sludge removal mechanism for the bottom of a water treatment tank, belonging to the field of water treatment technology. It includes a sludge removal unit and a sludge scraping unit. The sludge removal unit includes a sludge trough, which is located at one end of the bottom of the tank. The sludge scraping unit includes a moving box, a scraper, and a limiting plate. The moving box is located at the bottom of the tank and can move towards and away from the sludge trough. The scraper is rotatably connected to the bottom end of the moving box on the side facing the sludge trough. The limiting plate is located inside the moving box, and its outer end can move out of / into the moving box as the moving box moves towards / away from the sludge trough. When the limiting plate moves out, it presses against the scraper, causing the outer end of the scraper to contact the bottom surface of the tank and restricting the scraper's rotation. When the limiting plate moves in, it separates from the scraper and does not restrict the scraper's rotation. This utility model has advantages such as good sludge removal and cleaning effect.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment technology, and relates to a sludge discharge mechanism, and more particularly to a sludge discharge mechanism at the bottom of a water treatment tank. Background Technology

[0002] Sludge removal from the bottom of water treatment tanks is a crucial step in the water treatment process, directly impacting sludge treatment efficiency and water quality stability. Current technologies primarily employ sludge scrapers or suction devices for sludge removal from the bottom of water treatment tanks. Depending on the sludge tank type, peripheral drive, center drive, or traveling sludge scrapers are selected to remove sludge from the bottom. These existing sludge tanks generally require external mechanical scraping equipment for sludge removal. The drive components of these mechanical scrapers are typically located at the top of the tank, with scraping components extending to the bottom for suction. However, during movement, gaps can easily form between the scraping components and the bottom surface of the tank, resulting in poor sludge removal efficiency. Utility Model Content

[0003] This utility model provides a sludge removal mechanism at the bottom of a water treatment tank to overcome the defects of the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A sludge removal mechanism for a water treatment tank bottom is provided for treating sludge at the bottom of the tank. The mechanism includes a sludge removal unit and a sludge scraping unit. The sludge removal unit includes a sludge trough located at one end of the tank bottom. The sludge scraping unit includes a moving box, a scraper, and a limiting plate. The moving box is located at the bottom of the tank and is movable towards and away from the sludge trough. The scraper is rotatably connected to the bottom end of the moving box facing the sludge trough. The limiting plate is located inside the moving box, and its outer end can move out of / into the moving box as the moving box moves towards / away from the sludge trough. When the limiting plate moves out, it presses against the scraper, causing the outer end of the scraper to contact the bottom surface of the tank and restricting the scraper's rotation. When the limiting plate moves in, it separates from the scraper and does not restrict the scraper's rotation.

[0006] To optimize the above technical solution, the specific measures also include:

[0007] Furthermore, a drive cylinder is rotatably connected inside the movable box, and the drive cylinder can rotate as the movable box moves; a gear structure is provided on the outer wall of the drive cylinder; a rack structure that meshes with the gear structure is provided on the side of the limiting plate facing the drive cylinder; the gear structure rotates forward / backward with the drive cylinder, and the rack structure drives the limiting plate to move out / into the movable box accordingly.

[0008] Furthermore, the movable box is provided with a mounting groove for the drive cylinder to rotate and a guide groove for the limiting plate to move.

[0009] Furthermore, the guide groove has a limiting groove on its side, and the limiting plate has a limiting protrusion on its side, which moves in the limiting groove.

[0010] Furthermore, both sides of the bottom of the pool are provided with sliding grooves; the rotating shaft of the drive cylinder extends through the movable box at both ends and is fixed with rollers. The rollers are in contact with the bottom wall of the sliding groove and roll relative to the sliding groove as the movable box moves, and the drive cylinder rotates accordingly.

[0011] Furthermore, the scraper has a hollow structure, and a filter screen is provided in the hollow structure.

[0012] Furthermore, both sides of the bottom of the pool are provided with rotatable drive rods, which are screws. The two ends of the movable box are threadedly connected to the drive rods, and the rotation of the drive rods causes the movable box to move.

[0013] Furthermore, the sludge discharge unit also includes a sludge discharge assembly; the sludge discharge assembly is used to discharge the sludge from the sludge tank.

[0014] Furthermore, the sludge discharge assembly includes an auger conveying structure; the auger conveying structure is disposed inside the sludge tank and conveys the sludge in the sludge tank to one end.

[0015] Furthermore, the sludge discharge assembly also includes a sludge suction pipe and a submersible sludge pump; the sludge suction pipe is vertically arranged at the end of the conveying direction of the auger conveying structure, and the submersible sludge pump is arranged on the sludge suction pipe.

[0016] The beneficial effects of this utility model are as follows: This utility model provides a sludge removal mechanism for the bottom of a water treatment tank, which can solve the problem of poor cleaning effect of existing sludge removal mechanisms for the bottom of water treatment tanks. Specifically, this utility model has a movable box that can move at the bottom of the tank. The movable box is equipped with a scraper. The movement of the scraper pushes the sludge at the bottom of the tank into a sludge trough at one end of the tank, and finally discharges it through the sludge removal assembly. Furthermore, the movable box has a retractable limiting plate. The limiting plate extends and retracts with the movement of the movable box. When the movable box moves away from the sludge trough, the limiting plate moves into the movable box, and the scraper is not restricted by it, preventing the sludge from being pushed away from the sludge trough. When the movable box moves towards the sludge trough, the limiting plate moves out of the movable box, pressing down the scraper so that its bottom end contacts the bottom surface of the tank, thereby pushing the sludge during movement and achieving the effect of thoroughly scraping the sludge at the bottom of the tank. By controlling the movable box to move back and forth multiple times, it is possible to avoid the movable box pushing too much sludge at a time, preventing the moving box from jamming due to excessive resistance in pushing the sludge. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the sludge removal mechanism at the bottom of the water treatment tank;

[0018] Figure 2 This is a schematic diagram of the internal structure of the sludge removal mechanism at the bottom of the water treatment tank;

[0019] Figure 3 yes Figure 2 Enlarged view of region A in the middle;

[0020] Figure 4 This is a schematic diagram of the sludge scraping unit in the sludge removal mechanism at the bottom of the water treatment tank.

[0021] Figure 5 yes Figure 4 Enlarged view of region B in the middle;

[0022] Figure 6 This is a schematic diagram of the sludge scraping unit in the sludge discharge mechanism at the bottom of the water treatment tank from another angle.

[0023] Figure 7 This is a partial structural diagram of the sludge scraping unit in the sludge removal mechanism at the bottom of the water treatment tank;

[0024] The labels in the attached diagram are as follows: 1. Pool body; 11. Chute; 2. Sludge discharge unit; 21. Sludge tank; 221. Screw conveyor structure; 222. Sludge suction pipe; 3. Sludge scraping unit; 31. Moving box; 311. Mounting groove; 312. Guide groove; 3121. Limiting groove; 32. Scraper; 321. Filter screen; 33. Limiting plate; 331. Rack and pinion structure; 332. Limiting protrusion; 34. Drive cylinder; 341. Gear structure; 342. Roller; 35. Drive rod. Detailed Implementation

[0025] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0026] like Figure 1 As shown, this utility model provides a sludge removal mechanism for the bottom of a water treatment tank, used to treat the sludge at the bottom of the water treatment tank 1, including a sludge removal unit 2 and a sludge scraping unit 3.

[0027] like Figure 1 As shown, the sludge discharge unit 2 includes a sludge tank 21. The sludge tank 21 is located at one end of the bottom of the tank body 1 and is a recessed tank extending downwards from the bottom of the tank body 1. Figures 1-6As shown, the sludge scraping unit 3 includes a movable box 31, a scraper 32, and a limiting plate 33. The movable box 31 is located at the bottom of the tank 1 and can move towards and away from the sludge tank 21. The scraper 32 is rotatably connected to the bottom end of the movable box 31 facing the sludge tank 21. The limiting plate 33 is located inside the movable box 31, and its outer end can move out of and into the movable box 31 as the movable box 31 moves towards / away from the sludge tank 21. When the limiting plate 33 moves out, it presses parallel to the scraper 32, causing the outer end of the scraper 32 to contact the bottom surface of the tank 1 and restricting the rotation of the scraper 32, thereby enabling the scraper 32 to push the sludge at the bottom of the tank 1; when the limiting plate 33 moves in, it separates from the scraper 32, does not restrict the rotation of the scraper 32, and at this time the scraper 32 cannot push the sludge at the bottom of the tank 1.

[0028] When the moving box 31 moves the scraper 32 toward the sludge tank 21, the extended limiting plate 33 restricts the rotation of the scraper 32 so that its outer end is always in contact with the bottom surface of the tank 1, thereby scraping the sludge at the bottom of the tank 1 into the sludge tank 21. When the moving box 31 moves the scraper 32 away from the sludge tank 21, the scraper 32 is not restricted by the retracted limiting plate 33, and the moving scraper 32 does not push the sludge.

[0029] Specifically, regarding the extension and retraction of the limit plate 33: such as Figure 4 and Figure 5 As shown, a drive cylinder 34 is rotatably connected inside the movable box 31, and the drive cylinder 34 can rotate as the movable box 31 moves. A gear structure 341 is provided on the outer wall of the drive cylinder 34. A rack structure 331, meshing with the gear structure 341, is provided on the side of the limiting plate 33 facing the drive cylinder 34. As the drive cylinder 34 rotates forward / backward, the rack structure 331 accordingly moves the limiting plate 33 out of / into the movable box 31.

[0030] That is, when the moving box 31 moves toward the sludge tank 21, the drive cylinder 34 rolls along with it, and the limiting plate 33 moves out of the moving box 31 through the meshing gear structure 341 and rack structure 331, limiting the scraper 32. When the moving box 31 drives the scraper 32 away from the sludge tank 21, the drive cylinder 34 reverses, and the limiting plate 33 moves back into the moving box 31 through the meshing gear structure 341 and rack structure 331, releasing the restriction on the scraper 32. In other words, the rotation of the drive cylinder 34 causes the limiting plate 33 to slide out or retract, thereby completing the unlocking and locking of the scraper 32.

[0031] Specifically, such as Figure 5 As shown, the movable box 31 is provided with a mounting groove 311 for the drive cylinder 34 to rotate and a guide groove 312 for the limit plate 33 to move. The guide groove 312 is connected to the mounting groove 311. The mounting groove 311 is used to mount the drive cylinder 34. The guide groove 312 is used to guide the movement of the limit plate 33.

[0032] like Figure 7 As shown, the guide groove 312 has a limiting groove 3121 on its side, and the limiting plate 33 has a limiting protrusion 332 on its side. The limiting protrusion 332 is set in the limiting groove 3121 and can move in the limiting groove 3121 to prevent the limiting plate 33 from moving out of the guide groove 312.

[0033] Preferably, there are two limiting plates 33, which are respectively disposed above both ends of the scraper 32. Correspondingly, there are also two guide grooves 312, with the two limiting plates 33 respectively disposed in the corresponding guide grooves 312. By setting two sets of limiting plates 33 and guide grooves 312, the scraper 32 can be better locked and limited (only one set of limiting plates 33 and guide grooves 312 is shown in the attached figure).

[0034] Furthermore, regarding the rotation of the drive cylinder 34: as Figure 2 and 3 As shown, both sides of the bottom of the pool body 1 are provided with sliding grooves 11 arranged along the moving direction of the moving box 31. The rotating shaft of the drive cylinder 34 extends through both ends of the moving box 31 and is fixed with rollers 342. The rollers 342 are in contact with the bottom wall of the sliding groove 11 and roll relative to the sliding groove 11 as the moving box 31 moves, and the drive cylinder 34 rotates accordingly. That is, the rolling of the rollers 342 drives the drive cylinder 34 to rotate, and the drive cylinder 34 then moves the limiting plate 33 through the cooperation of the gear structure 341 and the rack structure 331. When the limiting protrusion 332 of the limiting plate 33 is limited by the limiting groove 3121 and cannot move, the rollers 342 will slide against the sliding groove 11.

[0035] like Figure 3 , Figure 4 and Figure 6 As shown, in a preferred embodiment, the scraper 32 has a perforated structure, in which a filter screen 321 is provided. When the scraper 32 pushes the sludge at the bottom of the tank 1, water in the tank bottom or sludge can pass through the filter screen 321, thereby effectively reducing the resistance when the scraper 32 moves.

[0036] Regarding the movement of the moving box 31: (as follows) Figure 2 and Figure 3 As shown, both sides of the bottom of the pool body 1 are equipped with rotatable drive rods 35. The drive rods 35 are screws, and the two ends of the movable box 31 are sleeved on the drive rods 35 and threadedly connected to them. The rotation of the drive rods 35 drives the movable box 31 to move. Specifically, after the drive rods 35 extend out of the pool body 1, they are connected to a motor to drive their rotation.

[0037] The sludge discharge unit 2 also includes a sludge discharge assembly. The sludge discharge assembly is used to discharge the sludge from the sludge tank 21.

[0038] like Figure 1As shown, the sludge discharge assembly includes an auger conveyor structure 221. The auger conveyor structure 221 is disposed within the sludge tank 21, transporting the sludge from the tank 21 to one end. The top of the auger conveyor structure 221 is not higher than the bottom surface of the tank body 1 to avoid interference with the movement of the scraper 32 and to prevent the scraper 32 from colliding with the auger conveyor structure 221 during movement. The auger conveyor structure 221 is prior art and will not be described further.

[0039] like Figure 1 and Figure 2 As shown, the sludge discharge assembly also includes a sludge suction pipe 222 and a submersible sludge pump. The sludge suction pipe 222 is vertically arranged at the end of the conveying direction of the screw conveyor structure 221, and the submersible sludge pump is arranged on the sludge suction pipe 222. The sludge conveyed by the screw conveyor structure 221 to one end of the sludge tank 21 is extracted through the sludge suction pipe 222 and the submersible sludge pump.

[0040] The working principle of this mechanism is as follows: When the moving box 31 moves away from the sludge tank 21, the roller 342 rolls synchronously in the chute 11, driving the limiting plate 33 to move inward through the drive cylinder 34. When the limiting plate 33 moves upward, it releases the restriction on the rotation of the scraper 32, thus preventing the scraper 32 from pushing sludge as the moving box 31 moves away from the sludge tank 21. When the moving box 31 moves towards the sludge tank 21, the roller 342 drives the drive cylinder 34 to rotate in the opposite direction, pushing the limiting plate 33 outward. The limiting plate 33 presses the scraper 32 downward, causing the bottom end of the scraper 32 to contact the bottom surface of the tank 1. Thus, as the moving box 31 moves towards the sludge tank 21, the scraper 32 pushes the sludge into the sludge tank 21. The auger conveying structure 221 in the sludge tank 21, in conjunction with the sludge suction pipe 222, discharges the sludge. By repeatedly moving the moving box 31 back and forth, the sludge in the tank 1 can be discharged.

[0041] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in this utility model are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0042] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sludge removal mechanism for the bottom of a water treatment tank, used to treat sludge at the bottom of the tank, characterized in that: Includes a sludge removal unit and a sludge scraping unit; The sludge removal unit includes a sludge tank; the sludge tank is located at one end of the bottom of the pool. The sludge scraping unit includes a movable box, a scraper, and a limiting plate; The movable box is located at the bottom of the pool and can move in the direction toward and away from the sludge trough; the scraper is rotatably connected to the bottom end of the movable box on the side facing the sludge trough. The limiting plate is set inside the movable box, and its outer end can move out of / into the movable box as the movable box moves toward / away from the sludge tank; When the limiting plate moves out, it presses against the scraper, causing the outer end of the scraper to contact the bottom surface of the pool and restricting the rotation of the scraper; when the limiting plate moves in, it separates from the scraper and does not restrict the rotation of the scraper.

2. The sludge removal mechanism at the bottom of the water treatment tank according to claim 1, characterized in that: A drive cylinder is rotatably connected inside the movable box, and the drive cylinder can rotate as the movable box moves; the outer wall of the drive cylinder is provided with a ring of gear structure; The limiting plate has a rack structure on the side facing the drive cylinder that meshes with the gear structure. The gear structure rotates forward / reverse with the drive cylinder, and the rack structure accordingly moves the limiting plate out / into the moving box.

3. The sludge removal mechanism at the bottom of the water treatment tank according to claim 2, characterized in that: The movable box is provided with a mounting groove for the drive cylinder to rotate and a guide groove for the limit plate to move.

4. The sludge removal mechanism at the bottom of the water treatment tank according to claim 3, characterized in that: The guide groove has a limiting groove on its side, and the limiting plate has a limiting protrusion on its side, which moves in the limiting groove.

5. The sludge removal mechanism at the bottom of the water treatment tank according to claim 2, characterized in that: The bottom of the pool is provided with sliding grooves on both sides; The drive cylinder's rotating shaft extends through both ends of the movable box and is fixed with rollers. The rollers contact the bottom wall of the slide groove and roll relative to the slide groove as the movable box moves, causing the drive cylinder to rotate accordingly.

6. The sludge removal mechanism at the bottom of the water treatment tank according to claim 1, characterized in that: The scraper has a hollow structure, and a filter screen is installed in the hollow structure.

7. The sludge removal mechanism at the bottom of the water treatment tank according to claim 1, characterized in that: Both sides of the bottom of the pool are equipped with rotatable drive rods, which are screws. The two ends of the movable box are threadedly connected to the drive rods, and the rotation of the drive rods causes the movable box to move.

8. The sludge removal mechanism at the bottom of the water treatment tank according to claim 1, characterized in that: The sludge removal unit also includes a sludge removal assembly; The sludge discharge assembly is used to discharge the sludge from the sludge tank.

9. The sludge removal mechanism at the bottom of the water treatment tank according to claim 8, characterized in that: The sludge removal assembly includes an auger conveyor structure; The screw conveyor structure is installed inside the sludge tank to transport the sludge in the sludge tank to one end.

10. The sludge removal mechanism at the bottom of the water treatment tank according to claim 9, characterized in that: The sludge discharge assembly also includes a sludge suction pipe and a submersible sludge pump. The sludge suction pipe is vertically installed at the end of the conveying direction of the auger conveying structure, and the submersible sludge pump is installed on the sludge suction pipe.

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