Anti-caking sand addition sedimentation tank

Abstract

The utility model relates to sewage treatment technical field especially relates to a kind of anti-caking sand precipitation tank to add.It includes sedimentation tank body, scraper, pivot, water supply pipe, water supply control component, rotary control component, nozzle, scraper is installed in the inside of sedimentation tank body, one end of pivot is connected scraper, the other end of pivot is connected rotary control component, multiple nozzles are connected on scraper and nozzle is towards the advancing direction of scraper, the water outlet of water supply pipe is respectively communicated multiple nozzles, water supply control component connects the water inlet of water supply pipe, and water supply pipe is connected on pivot.This sedimentation tank is by being provided with nozzle in the advancing direction of scraper, using high-pressure water flow to flush the sludge hard layer in front of scraper, make hard layer form gap, for the scraper to advance space.In the synergistic effect of high-pressure water flow repeated flushing and scraper gradually advancing, deposition sludge can be re-agitated loose, to realize the timely start of scraper, without additional time consumption to clean deposition sludge.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an anti-caking sand sedimentation tank. Background Technology

[0002] In sedimentation tanks, scrapers are the core equipment for sludge collection and discharge. Through mechanical agitation within the tank, they scrape the sludge settled at the bottom to a designated area, typically a sludge hopper or discharge port, so that it can be subsequently discharged out of the tank via a sludge pump. This prevents sludge from accumulating at the bottom of the tank and ensures the treatment efficiency of the sedimentation tank.

[0003] To prevent excessive sludge deposition at the bottom of the sedimentation tank, continuous agitation by scrapers is necessary to maintain the sludge's flowability. However, if the sedimentation tank is shut down for an extended period, or if the scrapers stop operating due to unforeseen circumstances such as a power outage, the sludge at the bottom will gradually accumulate and form a thick, hardened layer. If the sedimentation tank is restarted in this situation, the accumulated sludge may clog the scraper's path, creating significant resistance to its re-agitation. Forcibly restarting the scrapers can easily overload and damage the agitator motor, necessitating additional sludge cleaning from the bottom, which is not only time-consuming and labor-intensive but also prevents the scrapers from resuming operation promptly. Utility Model Content

[0004] This utility model provides an anti-caking sand-addition sedimentation tank, which aims to solve the technical problem that the scraper cannot be activated in time when a hardened layer is formed in the sedimentation tank.

[0005] This utility model provides an anti-caking sand-addition sedimentation tank, including a sedimentation tank body, a scraper, a rotating shaft, a water supply pipe, a water supply control component, a rotation control component, and nozzles. The scraper is installed inside the sedimentation tank body. One end of the rotating shaft is connected to the scraper, and the other end of the rotating shaft is connected to the rotation control component. Multiple nozzles are connected to the scraper and face the forward direction of the scraper. The outlet of the water supply pipe is connected to the multiple nozzles. The water supply control component is connected to the inlet of the water supply pipe, and the water supply pipe is connected to the rotating shaft.

[0006] As a further improvement of this utility model, the bottom of the scraper is provided with a plurality of scraping teeth, which are evenly spaced apart.

[0007] As a further improvement of this utility model, each of the nozzles is disposed in the gap between the two scraping teeth.

[0008] As a further improvement of this utility model, the scraper teeth are inclinedly arranged on the scraper plate, and the inclination angle of the scraper teeth is 30° with the horizontal direction of the scraper plate.

[0009] As a further improvement of this utility model, the scraper is divided into two sub-scrapers with the rotation axis as the axis of symmetry. The two sub-scrapers move in opposite directions. Each sub-scraper is equipped with multiple nozzles, and the nozzles on the sub-scraper face in the same direction as the forward movement of the sub-scraper.

[0010] As a further improvement of this utility model, the anti-caking sand sedimentation tank also includes a rotary coupling, which is installed on a rotating shaft and connected to the outer wall of the water supply pipe.

[0011] As a further improvement of this utility model, the rotation control component includes a controller and a rotary motor, the output end of the rotary motor is connected to the rotating shaft, and the controller is connected to and controls the rotary motor.

[0012] As a further improvement of this utility model, the water supply control component includes a controller, a high-pressure water pump, and a solenoid valve. The high-pressure water pump is connected to the water supply pipe, the solenoid valve is installed on the water supply pipe, and the controller is connected to and controls the high-pressure water pump and the solenoid valve.

[0013] The beneficial effects of this invention are as follows: By installing nozzles in the forward direction of the scraper, the sedimentation tank utilizes high-pressure water flow to flush the hardened sludge layer in front of the scraper, creating gaps in the hardened layer and freeing up space for the scraper to advance. Under the synergistic effect of repeated flushing by the high-pressure water flow and the gradual advancement of the scraper, the deposited sludge is re-stirred and loosened, thus enabling the scraper to be activated promptly without requiring additional time to clean the deposited sludge, effectively improving the operating efficiency of the sedimentation tank. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the anti-caking sand sedimentation tank of this utility model. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 As shown, the present invention provides an anti-caking sand-addition sedimentation tank, comprising a sedimentation tank body 1, a scraper 2, a rotating shaft 3, a water supply pipe 4, a water supply control component, a rotation control component, and nozzles 5. The scraper 2 is installed inside the sedimentation tank body 1. One end of the rotating shaft 3 is connected to the scraper 2, and the other end of the rotating shaft 3 is connected to the rotation control component. Multiple nozzles 5 are connected to the scraper 2 and face the forward direction of the scraper 2. The outlet of the water supply pipe 4 is connected to the multiple nozzles 5 respectively. The water supply control component is connected to the inlet of the water supply pipe 4, and the water supply pipe 4 is connected to the rotating shaft 3.

[0017] The rotation control component controls the rotation of the shaft 3, thereby driving the scraper 2 to agitate in the sedimentation tank. The water supply control component supplies water to multiple nozzles 5 synchronously through the water supply pipe 4, thereby forming a flushing water flow in the forward direction of the scraper 2, which flushes the sludge deposited at the bottom of the sedimentation tank 1 to create gaps, making it easier for the scraper 2 to move forward and agitate.

[0018] The scraper 2 has multiple scraper teeth 6 at its bottom, which are evenly spaced. As the end agitation structure of the scraper 2, the scraper teeth 6 can scrape the sludge, break up sludge clumps, and make the sedimentation tank evenly agitated. At the same time, during normal agitation of the sedimentation tank, they can also assist the scraper 2 in scraping and collecting sludge.

[0019] Each nozzle 5 is positioned in the gap between two scraper teeth 6. During agitation, the scraper teeth 6 on the scraper 2 are the front end that contacts the hardened layer. The nozzles 5, positioned near the scraper teeth 6, can directly flush the hardened layer in front of the scraper teeth 6, causing the hardened layer in that area to soften or be washed away preferentially. This allows the scraper teeth 6 to simultaneously cut and scrape the sludge, creating space for the scraper 2 to advance. Multiple nozzles 5 positioned between multiple scraper teeth 6 allow for a more even distribution of the nozzles 5, forming a larger water flow flushing surface.

[0020] The scraper teeth 6 are inclined on the scraper 2, and the angle of inclination of the scraper teeth 6 is 30° with the horizontal direction of the scraper 2. The scraper teeth 6 adopt an inclined structure, which can cut and scrape the hardened layer head-on when it is softened by the high-pressure water flow, thereby further scraping the hardened layer with the high-pressure water flow and giving the scraper 2 enough space to break through.

[0021] The scraper 2 is divided into two sub-scraper blades 7 about the axis of rotation 3. The two sub-scraper blades 7 move in opposite directions. Each sub-scraper blade 7 is equipped with multiple nozzles 5, and the nozzles 5 on the sub-scraper blade 7 face in the same direction as the forward movement of the sub-scraper blade 7. The axis of rotation 3 is connected to the central axis of the scraper 2. When the axis of rotation 3 rotates, the two sub-scraper blades 7 on both sides of the scraper 2 form two agitation surfaces in different directions. In order to ensure that the two agitation surfaces can move forward synchronously, multiple nozzles 5 with corresponding orientations need to be provided on each sub-scraper blade 7, so that the hardened layer in front of the two sub-scraper blades 7 can be flushed at the same time.

[0022] The anti-caking sand sedimentation tank includes a rotary connector 8, which is mounted on a rotating shaft 3. The outer wall of the water supply pipe 4 is connected to the rotary connector 8. The rotary connector 8 allows the water supply pipe 4 to be easily connected to external pipes, maintaining the water supply to the nozzle 5.

[0023] The rotation control assembly includes a controller 9 and a rotary motor 10. The output end of the rotary motor 10 is connected to the rotating shaft 3, and the controller 9 is connected to and controls the rotary motor 10. The controller 9 controls the start of the rotary motor 10, which drives the rotating shaft 3 to rotate, ultimately causing the scraper 2 to agitate in the sedimentation tank. At the same time, the controller 9 can control the speed and torque of the rotary motor 10, thereby adjusting the agitation speed of the scraper 2.

[0024] The water supply control assembly includes a controller 9, a high-pressure water pump 11, and a solenoid valve 12. The high-pressure water pump 11 is connected to the water supply pipe 4, and the solenoid valve 12 is installed on the water supply pipe 4. The controller 9 connects to and controls the high-pressure water pump 11 and the solenoid valve 12. By adjusting the opening and closing degree of the solenoid valve 12, the controller 9 can control the on / off state and flow rate of the high-pressure water. By controlling the opening of the high-pressure water pump 11, the controller 9 can output a high-pressure water flow to the nozzle 5.

[0025] The working principle of this anti-caking sand-addition sedimentation tank is as follows: When a hardened sludge layer forms inside the sedimentation tank 1, the controller 9 starts the high-pressure water pump 11 and opens the solenoid valve 12, allowing high-pressure water to flow through the water supply pipe 4 to multiple nozzles 5. The nozzles 5 flush the hardened layer in the direction of the scraper 2's movement. After the hardened layer in front of the scraper 2 is flushed out of the gap, the controller 9 controls the motor to drive the rotating shaft 3 at low speed and high torque, driving the scraper 2 forward along the gap. At the same time, the high-pressure water flow from the nozzles 5 continuously flushes the hardened layer in the new area, forming new gaps for the scraper 2 to continue moving forward. This process is repeated until the hardened layer is completely dispersed, allowing the scraper 2 to smoothly agitate within the sedimentation tank. At this point, the controller 9 gradually reduces the high-pressure water flow and finally closes the solenoid valve 12 and the high-pressure water pump 11, while maintaining the motor's drive on the scraper 2, restoring the sedimentation tank to normal operation.

[0026] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A sand-addition sedimentation tank for preventing caking, characterized in that, The system includes a sedimentation tank, a scraper, a rotating shaft, a water supply pipe, a water supply control component, a rotation control component, and nozzles. The scraper is installed inside the sedimentation tank. One end of the rotating shaft is connected to the scraper, and the other end of the rotating shaft is connected to the rotation control component. Multiple nozzles are connected to the scraper and face the direction of the scraper's movement. The outlet of the water supply pipe is connected to the multiple nozzles. The water supply control component is connected to the inlet of the water supply pipe, and the water supply pipe is connected to the rotating shaft. The scraper has multiple scraping teeth at its bottom, which are evenly spaced apart. Each nozzle is located in the gap between two scraping teeth. The scraping teeth are inclined on the scraper, and the inclination angle of the scraping teeth is 30° with the horizontal direction of the scraper's movement.

2. The anti-caking sand-addition sedimentation tank according to claim 1, characterized in that, The scraper is divided into two sub-scrapers about the axis of rotation. The two sub-scrapers move in opposite directions. Each sub-scraper is equipped with multiple nozzles, and the nozzles on the sub-scraper face the same direction as the forward movement of the sub-scraper.

3. The anti-caking sand-addition sedimentation tank according to claim 1, characterized in that, It also includes a rotary connector, which is mounted on a rotating shaft and connected to the outer wall of the water supply pipe.

4. The anti-caking sand-addition sedimentation tank according to claim 1, characterized in that, The rotation control component includes a controller and a rotary motor. The output end of the rotary motor is connected to the rotating shaft, and the controller is connected to and controls the rotary motor.

5. The anti-caking sand-addition sedimentation tank according to claim 1, characterized in that, The water supply control assembly includes a controller, a high-pressure water pump, and a solenoid valve. The high-pressure water pump is connected to the water supply pipe, and the solenoid valve is installed on the water supply pipe. The controller is connected to and controls the high-pressure water pump and the solenoid valve.

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