A sludge discharge device for a wastewater sedimentation tank

Abstract

The utility model belongs to industrial wastewater treatment equipment technical field especially for a kind of for wastewater sedimentation tank sludge discharge device, including sedimentation tank, the outer surface of sedimentation tank is provided with controller, the bottom surface of sedimentation tank is fixedly connected with conical pool, the inside of sedimentation tank and conical pool is commonly provided with two scraper frames and spiral shaft, the bottom surface of each scraper frame is close to the inner wall of conical pool and leave tiny gap, the upper portion of sedimentation tank is respectively provided with collar and rotating motor, the inner wall of collar is rotatably connected with rotating ring, the bottom surface of rotating ring is fixedly connected with the top of two scraper frames, the outer surface of rotating ring is fixedly connected with gear ring, the output of rotating motor is fixedly connected with gear, gear and gear ring are engaged, by the cooperation of sedimentation tank and conical pool, both effective precipitation of wastewater can be realized, sludge can be gathered naturally by the inclined structure of conical pool, and the start-stop control of equipment can be conveniently realized by controller, operation is more flexible.

Description

Technical Field

[0001] This utility model belongs to the technical field of industrial wastewater treatment equipment, specifically relating to a sludge removal device for wastewater sedimentation tanks. Background Technology

[0002] Wastewater sedimentation tanks are key structures in wastewater treatment processes that use gravity to separate and remove suspended solids from wastewater. Their working principle involves wastewater flowing in and slowing down, causing solid particles to settle to the bottom of the tank under gravity, forming a sludge layer. The supernatant then overflows from the top, achieving solid-liquid separation to reduce the concentration of suspended solids. Based on their structure, sedimentation tanks can be classified into horizontal flow, radial flow, vertical flow, and inclined plate / inclined tube sedimentation tanks. They are commonly used in municipal wastewater pretreatment, industrial wastewater purification, and wastewater reuse pretreatment. Their operation requires the use of sludge removal devices such as traveling scrapers to promptly discharge sludge and avoid affecting the sedimentation effect. They are a fundamental unit for ensuring the efficiency of subsequent treatment processes.

[0003] However, in the actual operation of wastewater sedimentation tanks, sludge mainly relies on gravity to settle to the bottom of the tank. When the amount of sludge produced is large, traditional sludge discharge methods often face the problem of low cleaning efficiency. Since the sludge at the bottom of the tank easily forms a dense sediment layer, conventional sludge scraping equipment needs to work repeatedly to push it to the sludge discharge port. Especially under high-concentration sludge conditions, there may be a sudden increase in scraping resistance and excessive equipment load, which leads to prolonged sludge discharge time and incomplete cleaning.

[0004] To address the aforementioned problems, this application proposes a sludge removal device for wastewater sedimentation tanks. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a sludge removal device for wastewater sedimentation tanks, which has the characteristic of improving the sludge removal effect of sedimentation tanks.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sludge removal device for a wastewater sedimentation tank, comprising a sedimentation tank, a controller mounted on the outer surface of the sedimentation tank, a conical tank fixedly connected to the bottom surface of the sedimentation tank, two scrapers and a spiral shaft shared inside the sedimentation tank and the conical tank, the bottom surface of each scraper being close to the inner wall of the conical tank with a small gap, a collar and a rotary motor respectively mounted above the sedimentation tank, a rotating ring rotatably connected to the inner wall of the collar, the bottom surface of the rotating ring being fixedly connected to the top of the two scrapers, a toothed ring fixedly connected to the outer surface of the rotating ring, a gear fixedly connected to the output end of the rotary motor, the gear meshing with the toothed ring, a rotary motor mounted above the rotating ring, and the output end of the rotary motor being fixedly connected to the top of the spiral shaft.

[0007] As a preferred embodiment of this utility model, a fixing ring is fixedly connected to the outer surface of the sedimentation tank, and two sets of support columns are fixedly connected to the outer surface of the fixing ring.

[0008] As a preferred embodiment of this utility model, a fixing plate is fixedly connected to the back of the controller, and the back of the fixing plate is fixedly connected to the outer surface of the sedimentation tank.

[0009] As a preferred embodiment of this utility model, the bottom end of the conical pool is fixedly connected to a sludge discharge pipe, and a protective cover is snapped into the inside of the sludge discharge pipe.

[0010] As a preferred embodiment of this utility model, a fixing frame is fixedly connected to the outer surface of the collar, and the outer surface of the fixing frame is fixedly connected to the inner wall of the sedimentation tank.

[0011] As a preferred embodiment of this utility model, a connecting frame is fixedly connected to the upper surface of the fixing frame, and the back of the connecting frame is fixedly connected to the front of the rotary motor.

[0012] As a preferred embodiment of this utility model, two mounting brackets are fixedly connected to the upper surface of the fixed frame, and the two mounting brackets are respectively fixedly connected to the two sides of the rotating motor on their sides that are close to each other.

[0013] As a preferred embodiment of this utility model, the inner walls of the two mounting brackets are jointly fixedly connected to a limiting bracket, and the inner wall of the limiting bracket is rotatably connected to the outer surface of the spiral shaft.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: by combining the sedimentation tank and the conical tank, effective sedimentation of wastewater can be achieved, and the inclined structure of the conical tank can facilitate the natural accumulation of sludge. The controller can conveniently control the start and stop of the equipment, making operation more flexible. At the same time, the meshing transmission structure composed of the rotating ring, the gear ring and the gear of the rotating motor can drive the scraper to rotate along the inner wall of the conical tank, efficiently pushing the sludge attached to the tank wall to the center of the conical tank. Then, the rotating motor drives the spiral shaft to rotate, which can quickly discharge the sludge accumulated in the center of the conical tank to the outside. Compared with manual cleaning or traditional timed sludge discharge mode, this collaborative operation method not only significantly reduces energy consumption, but also significantly improves sludge discharge efficiency and cleaning thoroughness. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the sedimentation tank in this utility model; Figure 3 This is a schematic diagram of the conical pool in this utility model; Figure 4 This is a schematic diagram of the collar structure in this utility model; Figure 5 This is a schematic diagram of the gear structure in this utility model; Figure 6 This is a schematic diagram of the structure of the rotary motor in this utility model; In the diagram: 1. Sedimentation tank; 2. Controller; 3. Fixing plate; 4. Fixing ring; 5. Support column; 6. Fixing frame; 7. Mounting frame; 8. Conical tank; 9. Scraper frame; 10. Spiral shaft; 11. Sludge discharge pipe; 12. Protective cover; 13. Collar ring; 14. Gear ring; 15. Rotating ring; 16. Connecting frame; 17. Gear; 18. Rotary motor; 19. Rotary motor; 20. Limiting frame. Detailed Implementation

[0016] 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. Example

[0017] Please see Figure 1-6 The present invention provides the following technical solution: a sludge removal device for a wastewater sedimentation tank, comprising a sedimentation tank 1, a controller 2 disposed on the outer surface of the sedimentation tank 1, a conical tank 8 fixedly connected to the bottom surface of the sedimentation tank 1, two scrapers 9 and a spiral shaft 10 disposed together inside the sedimentation tank 1 and the conical tank 8, the bottom surface of each scraper 9 being close to the inner wall of the conical tank 8 with a small gap, a collar 13 and a rotary motor 18 disposed above the sedimentation tank 1, a rotating ring 15 rotatably connected to the inner wall of the collar 13, the bottom surface of the rotating ring 15 being fixedly connected to the top of the two scrapers 9, a toothed ring 14 being fixedly connected to the outer surface of the rotating ring 15, a gear 17 being fixedly connected to the output end of the rotary motor 18, the gear 17 and the toothed ring 14 meshing, a rotary motor 19 disposed above the rotating ring 15, and the output end of the rotary motor 19 being fixedly connected to the top of the spiral shaft 10; In this embodiment, the collar 13 securely wraps the rotating ring 15 with an embedded design, forming a rotating pair structure with a low coefficient of friction. The inner wall of the collar 13 is specially treated and has an annular lubricating oil groove. Combined with the self-lubricating coating on the outer ring of the rotating ring 15, it effectively reduces running resistance and ensures that the rotating ring 15 rotates stably under high-frequency operation. In addition, the controller 2 adopts a PLC intelligent control system, which can automatically adjust the speed of the rotary motor 18 and the rotating motor 19 according to the preset program to realize the automated control of sludge discharge operation. It also has remote monitoring and fault early warning functions, effectively improving the intelligent management level of the equipment.

[0018] Specifically, a fixing ring 4 is fixedly connected to the outer surface of the sedimentation tank 1, and two sets of support columns 5 are fixedly connected to the outer surface of the fixing ring 4. In this embodiment, the rigid connection between the fixing ring 4 and the support columns 5 forms a stable support structure, providing balanced support force for the sedimentation tank 1, avoiding displacement or tilting caused by vibration during equipment operation, and enhancing the overall structural stability.

[0019] Specifically, a fixing plate 3 is fixedly connected to the back of the controller 2. The back of the fixing plate 3 is fixedly connected to the outer surface of the sedimentation tank 1. In this embodiment, the controller 2 is firmly installed on the outer wall of the sedimentation tank 1 by the fixing plate 3, which not only ensures that the controller 2 is closely connected to the main body of the equipment, which is convenient for the circuit integration and layout, but also reduces the impact of the vibration of the sedimentation tank 1 on the controller 2 through the buffering effect of the fixing plate 3, and protects the stable operation of electronic components.

[0020] Specifically, the bottom end of the conical pool 8 is fixedly connected to a sludge discharge pipe 11, and a protective cover 12 is snapped into the inside of the sludge discharge pipe 11. In this embodiment, the direct connection between the sludge discharge pipe 11 and the conical pool 8 ensures that the accumulated sludge can be discharged directly. At the same time, the snap-fit ​​structure of the protective cover 12 can seal the pipe in the non-sludge discharge state to prevent impurities from entering or sludge from leaking, and at the same time facilitates quick disassembly and assembly to meet the needs of pipe cleaning.

[0021] Specifically, a fixing frame 6 is fixedly connected to the outer surface of the collar 13. The outer surface of the fixing frame 6 is fixedly connected to the inner wall of the sedimentation tank 1. In this embodiment, the collar 13 is rigidly fixed to the inner wall of the sedimentation tank 1 by the fixing frame 6, so that the collar 13 becomes a stable support base for the rotating ring 15, avoiding radial swaying due to unstable support when the rotating ring 15 is running, and ensuring transmission accuracy.

[0022] Specifically, a connecting frame 16 is fixedly connected to the upper surface of the fixed frame 6. The back of the connecting frame 16 is fixedly connected to the front of the rotary motor 18. In this embodiment, the rotary motor 18 is precisely fixed at the corresponding height by the connecting frame 16, ensuring that the gear 17 at its output end and the gear ring 14 of the rotating ring 15 maintain the best meshing clearance, reducing transmission loss and improving power transmission efficiency.

[0023] Specifically, two mounting brackets 7 are fixedly connected to the upper surface of the fixed frame 6. The two mounting brackets 7 are fixedly connected to the two sides of the rotating motor 19 respectively on their side closer to each other. In this embodiment, the rotating motor 19 is stably fixed above the fixed frame 6 by the symmetrical clamping structure of the two mounting brackets 7, ensuring the coaxiality of its output shaft and the screw shaft 10, and avoiding shaft wear or abnormal noise caused by motor offset.

[0024] Specifically, the inner walls of the two mounting brackets 7 are fixedly connected to the limiting bracket 20. The inner wall of the limiting bracket 20 is rotatably connected to the outer surface of the spiral shaft 10. In this embodiment, the limiting bracket 20 forms a radial limit on the spiral shaft 10, which counteracts the radial force generated when the spiral shaft 10 rotates, prevents it from bending and deforming due to excessive cantilever length, ensures a stable connection between the spiral shaft 10 and the output shaft of the rotating motor 19, and extends the service life of the equipment.

[0025] The working principle and usage process of this utility model are as follows: In use, the device is first started via controller 2. Rotary motor 18 drives gear 17 to rotate. Through the meshing transmission between gear 17 and gear ring 14, rotating ring 15 is driven to rotate stably within collar 13. This, in turn, drives scraper 9 to move in a circular motion along the inner wall of conical pool 8. The tiny gap design between the bottom surface of scraper 9 and the inner wall of conical pool 8 allows for the gradual scraping off of sludge adhering to the pool wall and pushing it to the center of conical pool 8. Simultaneously, rotating motor 19 drives spiral shaft 10 to rotate, stirring and breaking up the sludge accumulated in the center of conical pool 8, reducing sludge viscosity for easier subsequent discharge. Once the sludge accumulates at the bottom of conical pool 8, sludge discharge pipe 1 is opened. Under the pushing action of the spiral shaft 10, the sludge is discharged from the sedimentation tank 1 through the sludge discharge pipe 11. At the same time, the PLC intelligent control system built into the controller 2 can automatically adjust the speed of the rotary motor 18 and the rotating motor 19 according to the preset program to realize the automated control of the sludge discharge operation. During the operation of the equipment, the stable support structure formed by the fixed ring 4 and the support column 5 can prevent the sedimentation tank 1 from being displaced due to vibration. The limit frame 20 forms a radial limit on the spiral shaft 10 to prevent it from deforming due to force and ensure the long-term stable operation of the equipment. When not in the sludge discharge state, the protective cover 12 is locked in the sludge discharge pipe 11 to prevent impurities from entering or sludge from leaking, and to ensure the stability of the device.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is 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 device for wastewater sedimentation tanks, characterized in that: The system includes a sedimentation tank (1), on the outer surface of which a controller (2) is installed. A conical tank (8) is fixedly connected to the bottom of the sedimentation tank (1). The sedimentation tank (1) and the conical tank (8) are equipped with two scrapers (9) and a spiral shaft (10). The bottom surface of each scraper (9) is close to the inner wall of the conical tank (8) with a small gap. A collar (13) and a rotary motor (18) are respectively installed above the sedimentation tank (1). A rotating ring (15) is rotatably connected to the inner wall of the rotating ring (15). The bottom surface of the rotating ring (15) is fixedly connected to the top of the two scrapers (9). A toothed ring (14) is fixedly connected to the outer surface of the rotating ring (15). A gear (17) is fixedly connected to the output end of the rotary motor (18). The gear (17) and the toothed ring (14) mesh with each other. A rotary motor (19) is provided above the rotating ring (15). The output end of the rotary motor (19) is fixedly connected to the top of the spiral shaft (10).

2. The sludge removal device for wastewater sedimentation tank according to claim 1, characterized in that: The outer surface of the sedimentation tank (1) is fixedly connected to a fixing ring (4), and the outer surface of the fixing ring (4) is fixedly connected to two sets of support columns (5).

3. The sludge removal device for wastewater sedimentation tank according to claim 1, characterized in that: The back of the controller (2) is fixedly connected to a fixing plate (3), and the back of the fixing plate (3) is fixedly connected to the outer surface of the sedimentation tank (1).

4. A sludge removal device for wastewater sedimentation tanks according to claim 1, characterized in that: The bottom end of the conical pool (8) is fixedly connected to a sludge discharge pipe (11), and a protective cover (12) is snapped into the inside of the sludge discharge pipe (11).

5. A sludge removal device for wastewater sedimentation tanks according to claim 1, characterized in that: The outer surface of the collar (13) is fixedly connected to a fixing frame (6), and the outer surface of the fixing frame (6) is fixedly connected to the inner wall of the sedimentation tank (1).

6. A sludge removal device for wastewater sedimentation tanks according to claim 5, characterized in that: A connecting frame (16) is fixedly connected to the upper surface of the fixed frame (6), and the back of the connecting frame (16) is fixedly connected to the front of the rotary motor (18).

7. A sludge removal device for wastewater sedimentation tanks according to claim 5, characterized in that: Two mounting brackets (7) are fixedly connected to the upper surface of the fixed frame (6), and the two mounting brackets (7) are fixedly connected to the two sides of the rotating motor (19) respectively on their side that are close to each other.

8. A sludge removal device for wastewater sedimentation tanks according to claim 7, characterized in that: The inner walls of the two mounting brackets (7) are fixedly connected to the limiting bracket (20), and the inner wall of the limiting bracket (20) is rotatably connected to the outer surface of the spiral shaft (10).

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