Device and method for cleaning partition plate of secondary sedimentation tank

Abstract

The invention discloses a secondary sedimentation tank partition plate cleaning device and a cleaning method, and aims to solve the problems of high moss and algae cleaning labor intensity, high safety risk and easy environmental pollution of the existing secondary sedimentation tank partition plate. The device comprises a water retaining partition assembly, a water pumping mechanism, a cleaning operation assembly and a hoisting driving assembly; the water retaining partition assembly is composed of a U-shaped water retaining plate, a movable bottom plate and an air bag-sealing strip sealing piece, and the water retaining partition assembly and the partition plate can form a closed compartment. The water pumping mechanism pumps and drains accumulated water in the compartments to form a water-free environment; the cleaning operation assembly is of a scrubbing-negative pressure suction integrated structure, and moss and algae chippings are synchronously treated through scrubbing of a cleaning wheel and suction of a negative pressure pipe. And the hoisting driving assembly realizes device positioning and multi-dimensional movement of the cleaning mechanism. According to the scheme, manual pool entering is not needed, the cleaning efficiency is high, the sealing performance is good, the device is suitable for secondary sedimentation tanks of different specifications, the sewage treatment process is not affected, and the remarkable practical value and popularization prospect are achieved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a device and method for cleaning the baffles of a secondary sedimentation tank. Background Technology

[0002] In the field of wastewater treatment, the activated sludge process is a widely used treatment technology, and the secondary sedimentation tank, as the core structure of this process, undertakes the important functions of mixed liquor clarification, sludge-water separation, and activated sludge thickening and recirculation. To optimize the water flow state within the tank, reduce short-circuiting and hydraulic disturbance, and improve sedimentation efficiency, the secondary sedimentation tank is usually equipped with multiple sets of baffle structures. These baffles can be divided into longitudinal guiding baffles, radial baffles, etc., depending on the tank type. Their surface smoothness and guiding effect directly affect the operating performance of the secondary sedimentation tank. However, the operating environment of the secondary sedimentation tank provides favorable conditions for the growth of algae: the water in the tank is rich in microorganisms and nutrients such as incompletely degraded nitrogen and phosphorus. The baffles are immersed in water for a long time, and most secondary sedimentation tanks are semi-open designs, allowing sunlight to directly shine on the baffle surface, meeting the energy supply required for the photosynthesis of algae. This makes it very easy for algae to adhere to and grow on the baffle surface.

[0003] Excessive proliferation of algae on the baffle surface can cause a series of problems, seriously affecting the normal operation of the secondary sedimentation tank. First, the increased algae will increase the surface roughness of the baffle, disrupting the original streamlined structure and increasing resistance to water flow along the baffle. This leads to uneven water distribution within the tank, and even short-circuiting, causing some wastewater to be discharged before sufficient sedimentation, reducing the sludge-water separation efficiency of the secondary sedimentation tank. Second, as the algae grow and age, they will gradually detach from the baffle surface, forming suspended debris that enters the treated water. This increases the concentration of suspended solids in the effluent, affecting not only the effluent quality but also increasing the load on subsequent filtration and disinfection processes, thus raising wastewater treatment costs. Furthermore, the biofilm formed by algae attached to the baffle surface can corrode the baffle material, especially common materials like concrete and fiberglass. Long-term exposure to biofilm corrosion accelerates aging and damage, shortening the baffle's lifespan and increasing the workload of equipment maintenance and replacement.

[0004] Currently, the industry mainly uses two methods to clean algae and moss from the baffles in secondary sedimentation tanks: manual cleaning and chemical cleaning. However, both methods have significant limitations. Manual cleaning requires workers to enter the secondary sedimentation tank or use long-handled tools to scrub the baffles. This is not only labor-intensive and inefficient, making it difficult to thoroughly clean the baffles, but also poses safety hazards such as drowning and slipping, especially in large tanks or with many baffles, where the safety and economy of the cleaning operation are difficult to guarantee. Chemical cleaning involves adding algaecides and bactericides to the tank or specific areas to inhibit algae and moss growth. While relatively simple to operate, chemical agents can easily disrupt the microbial balance of the activated sludge in the secondary sedimentation tank, affecting wastewater treatment efficiency. Furthermore, chemical residues may cause secondary pollution, which does not meet current environmental protection requirements. Therefore, developing a specialized device that can efficiently, safely, and environmentally friendly clean algae and moss from baffles while ensuring the normal operation of the secondary sedimentation tank has become a pressing technical problem for the wastewater treatment industry. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a secondary sedimentation tank baffle cleaning device and method, which can specifically clean the baffles that produce moss and algae, without the need for manual entry into the tank, and is highly efficient, safe and environmentally friendly, and will not have an adverse effect on the sewage treatment process.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: The secondary sedimentation tank baffle cleaning device of the present invention includes a water-blocking baffle assembly, a cleaning operation assembly, and a hoisting drive assembly. The components work together to achieve efficient cleaning of moss and algae on the baffle. The specific structure is as follows: Water barrier components: This system, designed to form a closed cleaning compartment with the partition to be cleaned, includes a baffle plate, a movable base plate, and seals. The baffle plate has a U-shaped structure, consisting of a middle plate and two side plates. The side plates are shorter than the middle plate, but their bottom edges are higher. The lower inner sides of the two side plates are equipped with mounting seats for the movable base plate, which is rotatably connected via these seats. Each side plate has a first sealing strip at its end, allowing the compartment bottom to be closed or opened by rotation. A vertical groove is formed on the side of the side plate that contacts the partition. A second sealing strip and an airbag are located within this groove. The airbag is equipped with an inflation nozzle; when inflated, it pushes the second sealing strip to tightly adhere to the partition, enhancing the lateral sealing effect. A lifting ring is located at the top of the baffle plate, and a second lifting rope is located on the outer side of the side plates, used for overall lifting and positioning, and for controlling the opening and closing of the movable base plate, respectively.

[0007] Pumping mechanism: Installed on the middle plate of the baffle, the bottom is connected to a water pumping hose that extends into the enclosed compartment, and the top is connected to a drain pipe that extends into the secondary sedimentation tank outside the compartment. It is used to pump out the water accumulated in the compartment and create a waterless or low-water-level cleaning environment. The water pumping mechanism uses a corrosion-resistant submersible pump, and the water pumping hose is equipped with a filter screen to prevent impurities from clogging the pump body.

[0008] Cleaning operation components: This device is used for scrubbing and collecting debris from the surface of a partition in an anhydrous environment. It includes a cleaning mechanism, a lower frame, and a negative pressure suction unit. The cleaning mechanism is a hollow box structure with multiple hollow tubes passing through it on the side facing the partition. The ends of the tubes are connected to cleaning wheels with brushes. The hollow tubes inside the box are connected by a transmission belt, and the cleaning wheels are driven by a motor to rotate synchronously. The other ends of the hollow tubes are connected to a negative pressure pipe, and the output end of the negative pressure pipe is connected to a negative pressure mechanism to achieve real-time suction of the scrubbing debris. The bottom surface of the cleaning mechanism engages with the screw and smooth guide rod of the lower frame via ear plates. The cleaning mechanism's drive motor drives the screw to rotate, enabling the lateral movement of the cleaning mechanism.

[0009] Lifting drive assembly: The vertical lifting and positioning mechanism for the cleaning operation includes a top frame, a rope winding rod, and a rope winding motor. The top frame can be placed on a board on the inner wall of the side plate of the baffle. Two rope winding rods are provided on the frame, with a third lifting rope wound around the rods and the lower end connected to the lower frame. The rope winding motor drives the rope winding rods to rotate synchronously through a reduction gearbox, thereby realizing the vertical position adjustment of the cleaning mechanism. The rope winding rods are equipped with synchronous gears to ensure smooth lifting.

[0010] Based on the above-mentioned device, the secondary sedimentation tank baffle cleaning method provided by the present invention specifically includes the following steps: S1. Device positioning and initial isolation: With the movable base plate in the open position, the water baffle is lifted to the partition to be cleaned by the lifting ring and the crane, and then lowered to cover the cleaning area, so that the U-shaped opening fits the partition, completing the initial partition of the area to be cleaned. The open movable base plate can reduce the buoyancy and water flow resistance during lowering, and improve the positioning accuracy.

[0011] S2, Formation of enclosed compartments: Inflate the airbag through the inflation nozzle to push the second sealing strip to seal the partition sideways; start the winch to wind up the second hoisting rope, causing the movable base plate to rotate around the mounting seat and close, so that the first sealing strip fits into the bottom of the partition, forming a completely sealed cleaning compartment.

[0012] S3, Compartmental pumping: Start the pumping mechanism to drain the water in the compartment through the pumping hose. The water will flow back to the secondary sedimentation tank through the drain pipe until the compartment is dry or has a low water level. Then shut down the pumping mechanism.

[0013] S4. Cleaning component installation and cleaning operation: The top frame is placed on the baffle plate and fixed. The third hoisting rope is lowered by the rope reel motor to send the cleaning mechanism and the lower frame into the compartment. The distance between the cleaning wheel and the partition is adjusted. The cleaning wheel drive motor and the negative pressure mechanism are started. The cleaning wheel rotates and scrubs the moss and algae. The debris is sucked into the collection device through the hollow pipe and the negative pressure pipe.

[0014] S5, Full-area coverage cleaning: During the cleaning process, the vertical lifting of the cleaning mechanism is controlled by the rope winding motor, and the horizontal movement is controlled by the cleaning mechanism drive motor. The "vertical reciprocating + horizontal movement" mode covers the entire surface of the partition, ensuring that there are no blind spots in cleaning.

[0015] S6. Equipment withdrawal: After cleaning, retract the cleaning mechanism and lift it from the top frame; release the airbag gas, open the movable bottom plate to drain residual water, and finally lift the water baffle to complete the cleaning operation. For long partitions, a segmented cleaning method can be used, with adjacent areas overlapping to ensure complete cleaning.

[0016] The secondary sedimentation tank baffle cleaning device and method provided by the present invention, by adopting the above-described structure, has the following beneficial effects: (1) It can quickly and effectively isolate and seal the target partition area under normal operation of the secondary sedimentation tank, forming an independent working space. The pumping mechanism drains the residual water in the working space, creating conditions for subsequent dry or semi-dry mechanical cleaning. It realizes online cleaning without stopping production and without affecting the normal operation of the secondary sedimentation tank, which greatly improves the efficiency of cleaning operations and ensures the continuity of production. (2) The device is remotely controlled by a crane, hoisting equipment and hoisting rope, realizing the mechanization and automation of the cleaning process. This avoids the operator from entering the secondary sedimentation tank or coming into close contact with sewage and chemical agents, fundamentally eliminating the safety hazards such as drowning and slipping that exist in manual cleaning. At the same time, it adopts a pure physical mechanical cleaning method, without the need to add any chemical algaecide, eliminating the risk of chemical agents damaging the activated sludge microbial system in the secondary sedimentation tank, as well as the secondary pollution that may be caused by agent residues, which meets the requirements of green and environmentally friendly operation. (3) The cleaning mechanism adopts a structure of multiple hollow tubes and cleaning wheels. The cleaning wheel drive motor drives multiple sets of cleaning wheels to rotate synchronously through the transmission belt, which can efficiently and physically scrub the moss and algae on the surface of the partition. At the same time, the hollow tubes are connected to the negative pressure tubes and negative pressure mechanism. The debris generated by the scrubbing can be directly sucked out by the negative pressure through the hollow tubes, realizing the integrated operation of "scrubbing-vacuuming", avoiding secondary pollution from debris accumulation, and greatly improving the thoroughness of cleaning. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the cleaning mechanism and frame of the present invention.

[0019] Figure 3 This is a schematic diagram of the internal structure of the cleaning mechanism of the present invention.

[0020] In the diagram: 1. Water baffle plate, 101. Middle plate, 102. Side plate, 2. Movable base plate, 3. Movable base plate mounting seat, 4. First sealing strip, 5. Water pumping mechanism, 6. Water pumping hose, 7. Drain pipe, 8. Lifting ring, 9. First lifting rope, 10. Second lifting rope, 11. Platform, 12. Second sealing strip, 13. Airbag, 14. Inflation nozzle, 15. Top frame, 16. Rope winding rod, 17. Rope winding motor, 18. Third lifting rope, 19. Lower frame, 20. Cleaning mechanism, 21. Ear plate, 22. Screw, 23. Smooth guide rod, 24. Cleaning mechanism drive motor, 25. Cleaning wheel drive motor, 26. Negative pressure mechanism, 27. Power supply mechanism, 28. Hollow tube, 29. Transmission belt, 30. Negative pressure pipe, 31. Detailed Implementation

[0021] like Figure 1-3 In the present invention, a secondary sedimentation tank baffle cleaning device includes a baffle plate 1, wherein the baffle plate 1 is a U-shaped structure composed of a middle plate 101 and two side plates 102 located on both sides of the middle plate 101, the length of the two side plates 102 is less than that of the middle plate 101, and the bottom edge of the side plates 102 is higher than that of the middle plate 101. The two side plates 102 are provided with a movable base plate mounting seat 3 on the lower inner side. The movable base plate mounting seat 3 is provided with a movable base plate 2 that can rotate around the movable base plate mounting seat 3. The end of the movable base plate 2 is provided with a first sealing strip 4. The first sealing strip 4 is made of neoprene rubber and has a trapezoidal cross section. A vertical groove is provided on the side of the two side plates 102 that are in contact with the secondary sedimentation tank partition, and a second sealing strip 12 is provided in the vertical groove; A water pumping mechanism 5 is provided on the intermediate plate 101 between the two side plates 102. A water pumping hose 6 is provided at the bottom of the water pumping mechanism 5. The water pumping hose 6 extends downward into the compartment formed by the baffle plate 1, the movable bottom plate 2 and the secondary sedimentation tank partition. A drain pipe 7 is provided at the top of the water pumping mechanism 5, extending outside the compartment formed by the baffle plate 1, the movable bottom plate 2 and the secondary sedimentation tank partition.

[0022] In a preferred embodiment, the top two sides of the baffle plate 1 are provided with lifting rings 8, and the lifting rings 8 are provided with a first lifting rope 9, which is connected to the crane.

[0023] In a preferred embodiment, the two side plates 102 are provided with a second hoisting rope 10, which is connected upward to the winch equipment.

[0024] In a preferred embodiment, an airbag 13 is also provided in the vertical groove of the side plate 102. The airbag 13 is provided with an inflation nozzle 14. The airbag 13 is made of nitrile rubber and has a wear-resistant layer bonded to its surface.

[0025] In a preferred embodiment, a cleaning mechanism 20 is also included. The cleaning mechanism 20 has a hollow box structure. Multiple hollow tubes 29 are inserted through one side of the cleaning mechanism 20. A cleaning wheel 25 is provided on one end of the hollow tubes 29 located outside the cleaning mechanism 20. The multiple hollow tubes 29 located in the cleaning mechanism 20 are sequentially connected by a transmission belt 30.

[0026] In a preferred embodiment, the cleaning mechanism 20 is equipped with a cleaning wheel drive motor 26 at its top, and the cleaning wheel drive motor 26 is connected to one of the multiple hollow tubes 29 via a transmission belt.

[0027] In a preferred embodiment, one end of each of the multiple hollow tubes 29 inside the cleaning mechanism 20 is connected to multiple inlets of the negative pressure tube 31 (using a movable connection to ensure relative movement between the hollow tubes 29 and the negative pressure tube 31 during rotation), and the output end of the negative pressure tube 31 is connected to the negative pressure mechanism 27 located at the top of the cleaning mechanism 20. The cleaning mechanism 20 is equipped with a power supply mechanism 28 at the top, which supplies power to the cleaning wheel drive motor 26 and the negative pressure mechanism 27.

[0028] The power supply mechanism 28 is a lithium battery pack equipped with an intelligent charge and discharge management module, which has overcharge, over-discharge and short circuit protection functions. A cooling fan is installed on the outside of the battery pack to ensure stable temperature during long-term operation. The power supply mechanism 28 is electrically connected to the cleaning wheel drive motor 26 and the negative pressure mechanism 27 through waterproof wires, and is equipped with an LED power display panel, which allows staff to remotely monitor the power status.

[0029] In a preferred embodiment, ear plates 21 are provided at the four corners of the bottom surface of the cleaning mechanism 20. Screws 22 are threaded through two ear plates 21 on one side of the bottom surface of the cleaning mechanism 20, and smooth guide rods 23 are threaded through two ear plates 21 on the other side. The two ends of the screws 22 and the smooth guide rods 23 are connected to the two ends of the lower frame 19. A cleaning mechanism drive motor 24 for driving the screws 22 to rotate is provided on the lower frame 19.

[0030] In a preferred embodiment, a top frame 15 is also included, on which a rope-retracting rod 16 and a rope-retracting motor 17 for driving the rope-retracting rod 16 are provided. A third lifting rope 18 is wound around both ends of the rope-retracting rod 16, and the lower end of the third lifting rope 18 is connected to both ends of the lower frame 19. The upper part of the inner wall of the two side plates 102 of the water baffle 1 is provided with a mounting plate 11, which is used to support the two ends of the top frame 15.

[0031] Example 2: The cleaning method based on the secondary sedimentation tank baffle cleaning device described in Example 1 includes the following steps: S1. Clear any obstructions above the area to be cleaned in the secondary sedimentation tank one hour in advance. Before operation, release the second hoisting rope 10 using a winch to fully open the movable base plate 2. This allows water to flow smoothly through the gaps in the movable base plate, reducing water resistance and significantly decreasing buoyancy when the device enters the water. Operate the overhead crane, using the first hoisting rope 9 to lift the baffle plate 1 above the partition of the secondary sedimentation tank to be cleaned. Activate the slow descent function of the crane to slowly lower the baffle plate 1. During this process, the flow channel formed by the open movable base plate avoids lateral impact of the water flow on the baffle plate. Use the crane's lateral fine-tuning function to ensure the parallelism error between the baffle plate and the partition is ≤5mm. Stop lowering the baffle plate when its bottom contacts the sludge layer at the bottom of the tank by 5cm. Measure the coverage area of ​​the baffle plate with a tape measure to ensure that the area to be cleaned is completely covered by the baffle plate 1, completing the partition. If the baffle plate tilts during lowering, stop immediately, adjust the length of the first hoisting rope to restore the baffle plate to a horizontal position, and then continue operation. S2. Use a manual air pump to inflate the airbag 13 through the inflation nozzle 14. Monitor the pressure gauge during inflation. Stop inflation when the pressure reaches 0.3 MPa and close the one-way valve. After the airbag 13 inflates, it pushes the second sealing strip 12 to fit tightly against the partition surface. Use a 0.5 mm feeler gauge to check the gap between the side plate and the partition, ensuring the gap is ≤0.5 mm. Simultaneously, start the poolside winch and slowly wind up the second hoisting rope 10, causing the movable base plate 2 to rotate around the mounting base 3 and close. When the movable base plate contacts the bottom of the partition, continue winding the rope to cause a slight deformation of the first sealing strip 4. At this point, turn off the winch and lock the drum. Use a long feeler gauge to check the seal between the movable base plate and the partition, ensuring there is no leakage to form a closed compartment. If leakage is found at the seal, increase the airbag inflation pressure or adjust the closing angle of the movable base plate until the leakage is eliminated. S3. Slowly open the butterfly valve on drain pipe 7 and start the pumping mechanism 5 to pump out the remaining water in the compartment through the pumping hose 6. During the pumping process, observe the water level changes through the liquid level sensor installed in the compartment. When the water level drops to 10cm below the movable base plate 2, close the current pumping hose valve and switch to the backup pumping hose 6 to continue pumping to prevent pumping interruption due to a single hose being blocked by moss. Stop the pumping pump and close the drain pipe butterfly valve when the water depth in the compartment is ≤5cm. The pumped water flows smoothly back into the secondary sedimentation tank through drain pipe 7, and the water outlet velocity is controlled at ≤1m / s to avoid water flow impacting the sludge layer in the tank. If abnormal vibration or noise occurs in the pump body during the pumping process, stop the machine immediately for inspection, clean the filter screen of debris, and then restart. S4. Operate the overhead crane to lift the top frame 15 and slowly place both ends of it on the mounting plate 11 of the baffle plate 1. Start the rope winding motor 17 and slowly lower the third hoisting rope 18 to lower the cleaning mechanism 20 and the lower frame 19 into the compartment together. Stop lowering when the bottom of the lower frame is 20cm away from the movable base plate. Adjust the angle of the cleaning mechanism by remote control to keep the distance between the cleaning wheel 25 and the surface of the partition plate at 5mm to complete the installation. S5. Start the cleaning wheel drive motor 26 and negative pressure mechanism 27, and observe the rotation direction of the cleaning wheel through a remote camera. The cleaning wheel 25 physically scrubs the algae on the partition, and the scrubbing pressure is controlled by adjusting the distance between the cleaning wheel and the partition. At the same time, the negative pressure mechanism 27 generates negative pressure, and the debris generated by scrubbing enters the hollow tube 29 through the central hole of the cleaning wheel 25, and is then sucked into the collection bag through the negative pressure tube 31. During the process, the negative pressure value is monitored in real time by a pressure sensor. When the negative pressure is lower than -20kPa, the machine is stopped and the negative pressure mechanism is turned off, the discharge valve at the bottom of the collection bag is opened to empty the debris, and then the negative pressure mechanism is restarted to continue the operation. For algae with a thick layer on the surface of the partition, the cleaning wheel speed can be reduced and the scrubbing time can be extended through the frequency converter to ensure thorough cleaning. During the cleaning process, the power supply of the power supply mechanism is checked at regular intervals, and the backup battery pack is replaced in time when the power is low. S6. During the cleaning process, the forward and reverse rotation of the rope winding motor 17 controls the vertical lifting and lowering of the cleaning mechanism 20, starting from the bottom of the partition and cleaning upwards. When the cleaning wheel reaches 20cm from the top of the partition, the rope winding motor is started in reverse, causing the cleaning mechanism to descend to its initial position, completing the vertical full-coverage cleaning. At the same time, the cleaning mechanism drive motor 24 is started, driving the screw 22 to rotate, causing the cleaning mechanism 20 to move laterally along the smooth guide rod 23. During the movement, the limit position is controlled by the limit switch. When the cleaning mechanism reaches 10cm from one side plate, the drive motor is started in reverse, causing the cleaning mechanism to move to the other side, achieving horizontal full-coverage cleaning. The entire cleaning process adopts the "vertical reciprocating + horizontal movement" mode to ensure that there are no dead corners on the surface of the partition. S7. After completing the cleaning operation, first turn off the cleaning wheel drive motor 26, and then turn off the negative pressure mechanism 27 after 30 seconds (ensuring that any remaining debris in the pipeline is completely sucked into the collection bag). Start the rope retraction motor 17 to retract the cleaning mechanism 20. Stop retracting the rope when the lower frame rises to 10cm below the top frame, and operate the overhead crane to lift the top frame 15 to the designated storage area. Open the deflation valve of the airbag 13 to slowly deflate it. After the airbag is completely deflated, start the winch to release the second hoisting rope 10, open the movable base plate 2, and drain the small amount of water remaining in the compartment. Finally, operate the overhead crane to lift the water baffle 1. Lift the water baffle to the cleaning platform, use a high-pressure water gun to rinse off surface dirt, check the integrity of components such as the sealing strip and airbag, and complete the entire cleaning process.

[0032] For partitions longer than 1.8m, a "segmented cleaning" method can be used, repeating the above steps, with each cleaning area overlapping a certain portion to ensure that there are no cleaning gaps between adjacent areas.

[0033] In summary, the secondary sedimentation tank baffle cleaning device and method of the present invention, through modular design of water-blocking barriers, cleaning operations, and hoisting drive components, solves the technical pain points of existing cleaning methods, such as high labor intensity, high safety risks, and easy disruption of ecological balance. The device uses a combination of U-shaped water-blocking plates and movable base plates to achieve partial area sealing, and with the help of a double sealing structure of airbags and sealing strips, a waterless cleaning environment can be quickly formed; the cleaning mechanism adopts an integrated design of "brushing and negative pressure suction", combined with multi-dimensional drive adjustment, to achieve cleaning of the entire surface of the baffle without dead corners; the entire operation process is completed by hoisting equipment and motor drive, without the need for manual entry into the tank, and the sewage backflow does not affect the normal operation of the secondary sedimentation tank.

[0034] The opening and closing design of the movable base plate in this invention takes into account both the lowering resistance reduction and bottom sealing, improving the positioning efficiency of the device and the reliability of the compartment sealing. In addition, the detachable assembly of the cleaning components and the hoisting frame reduces the dependence on the modification of the original structure of the tank, adapts to secondary sedimentation tanks of different specifications, and ensures thorough cleaning while avoiding secondary pollution by combining physical scrubbing and negative pressure operation.

[0035] This device is durable and easy to maintain. It can be widely used in cleaning the baffles of secondary sedimentation tanks in urban sewage treatment plants and industrial wastewater treatment systems. It has significant advantages in improving cleaning efficiency, ensuring operational safety, and maintaining the stability of sewage treatment processes. It has good technical promotion value and economic practical value.

Claims

1. A device for cleaning a secondary sedimentation tank baffle, characterized by: The utility model provides a water baffle (1) is by a piece of intermediate plate (101) and is located the two sides of intermediate plate (101) two pieces of side plate (102) constitute U shape structure, two pieces of side plate (102) length is less than intermediate plate (101), and the side plate (102) bottom along height is higher than intermediate plate (101); The inner side lower part of the two side plates (102) is provided with a movable bottom plate mounting seat (3), the movable bottom plate mounting seat (3) is provided with a movable bottom plate (2) capable of rotating around the movable bottom plate mounting seat (3), and the end of the movable bottom plate (2) is provided with a first sealing strip (4); The side of the two side plates (102) in contact with the two sedimentation tank partitions is provided with a vertical groove, and the vertical groove is provided with a second sealing strip (12); The intermediate plate (101) between the two side plates (102) is provided with a water pumping mechanism (5), the bottom of the water pumping mechanism (5) is provided with a water pumping hose (6), the water pumping hose (6) extends downward into the compartment formed by the water baffle (1), the movable bottom plate (2) and the two sedimentation tank partitions, and the top of the water pumping mechanism (5) is provided with a drain pipe (7) extending out of the compartment.

2. A device for cleaning the partitions of a secondary sedimentation tank according to claim 1, characterized in that: The top of the water baffle (1) is provided with a lifting ring (8) on both sides, the lifting ring (8) is provided with a first lifting rope (9), and the first lifting rope (9) is connected to a travelling crane.

3. A device for cleaning the partitions of a secondary sedimentation tank according to claim 1, characterized in that: The two side plates (102) are provided with a second lifting rope (10) that is connected upward to a hoisting device.

4. A device for cleaning the partitions of a secondary sedimentation tank according to claim 1, characterized in that: The vertical groove of the side plate (102) is also provided with an air bag (13), and the air bag (13) is provided with an inflation pipe nozzle (14).

5. A device for cleaning the partitions of a secondary sedimentation tank according to claim 1, characterized in that: The utility model also includes a cleaning mechanism (20) which is a hollow box structure, a plurality of hollow pipes (29) are arranged on one side of the cleaning mechanism (20), a cleaning wheel (25) is arranged on one end of the hollow pipe (29) outside the cleaning mechanism (20), and the plurality of hollow pipes (29) in the cleaning mechanism (20) are sequentially and drivingly connected through a transmission belt (30).

6. A device for cleaning a screen of a secondary sedimentation tank according to claim 5, characterized in that: The top of the cleaning mechanism (20) is provided with a cleaning wheel driving motor (26), and the cleaning wheel driving motor (26) is drivingly connected to one of the plurality of hollow pipes (29) through a transmission belt.

7. A device for cleaning the partitions of a secondary sedimentation tank according to claim 5, characterized in that: One end of the plurality of hollow pipes (29) in the cleaning mechanism (20) is connected to a plurality of input ports of a negative pressure pipe (31), and the output end of the negative pressure pipe (31) is connected to a negative pressure mechanism (27) at the top of the cleaning mechanism (20). The top of the cleaning mechanism (20) is provided with a power supply mechanism (28) for supplying power to the cleaning wheel driving motor (26) and the negative pressure mechanism (27).

8. A device for cleaning the partitions of a secondary sedimentation tank according to claim 5, characterized in that: The bottom surface of the cleaning mechanism (20) is provided with an ear plate (21) at four corner points, a screw rod (22) is arranged on the two ear plates (21) on one side of the bottom surface of the cleaning mechanism (20), smooth guide rods (23) are arranged on the other two ear plates (21), and the two ends of the screw rod (22) and the smooth guide rods (23) are connected to the two ends of a lower frame (19), and the lower frame (19) is provided with a cleaning mechanism driving motor (24) for driving the screw rod (22) to rotate.

9. A device for cleaning a clarifier wall according to claim 8, characterized in that: Also include top frame (15), top frame (15) is provided with rope collecting rod (16) and rope collecting motor (17) for driving rope collecting rod (16), the both ends of rope collecting rod (16) are wound with third lifting rope (18), the lower end of third lifting rope (18) is connected to the both ends of lower frame (19); The inner wall of the two side plates (102) of the water baffle (1) is provided with a batten (11) at the upper part, and the batten (11) is used to support the two ends of the top frame (15).

10. A cleaning method for a cleaning device for a secondary sedimentation tank partition according to any one of claims 1 to 9, characterized in that The method comprises the following steps: S1, the water baffle (1) is lifted by the travelling crane to one side above the partition plate of the secondary sedimentation tank to be cleaned, the water baffle (1) is lowered to separate the area to be cleaned, and the air bag (13) is inflated to press the second sealing strip (12), so that the second sealing strip (12) is tightly attached to the partition plate of the secondary sedimentation tank; S2, start the winch connected with the second lifting rope (10) to make the two movable bottom plates (2) close and realize regional sealing through the first sealing strip (4); S3, start the water pumping mechanism (5) to pump out the remaining water in the working area to the secondary sedimentation tank outside the area; S4, hoist the top frame (15) to make the top frame (15) support on the batten (11); S5, start the cleaning wheel driving motor (26) and negative pressure mechanism (27) of the cleaning mechanism (20) to make the cleaning wheel (25) clean the moss and algae on the partition plate of the secondary sedimentation tank, and suck through the negative pressure mechanism (27); S6, control the position of the cleaning mechanism (20) in the vertical direction by the rope collecting motor (17) during the cleaning process, and control the position of the cleaning mechanism (20) in the horizontal direction by the cleaning mechanism driving motor (24), so as to realize the position adjustment of the cleaning mechanism (20); S7, after the cleaning work is completed, the top frame (15) and the water baffle (1) are lifted away in turn.

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