A floating filter device for urban lake blue-green algae treatment

Abstract

The present application relates to blue-green algae treatment technical field, disclose a kind of for urban lake blue-green algae treatment floating filter device, comprising: floating plate, the floating ball is fixedly installed in the bottom of the floating plate, the mounting plate is fixedly installed on the floating plate, the mounting plate is connected with external walking component, the separation tank, temporary storage cylinder, medicine cylinder and water suction pump are fixedly installed in the top of the floating plate, the height difference of temporary storage cylinder and separation tank is formed natural liquid level potential energy by communicating vessel principle, cooperate water suction pump, water inlet pipe complete blue-green algae water suction temporary storage, again by first solenoid valve opening and closing control water body flow, without centrifugal, pressurization and other complex separation means, rely on bottom water inlet thrust to lift liquid level and realize flocculation blue-green algae natural overflow, both reduce separation energy consumption, and can realize blue-green algae flocculation and clear water in situ layering, solve the problem that traditional blue-green algae treatment equipment separation process is complex, energy consumption is high.

Description

Technical Field

[0001] This invention relates to the field of cyanobacteria control technology, and more specifically to a floating filter device for cyanobacteria control in urban lakes. Background Technology

[0002] Generally speaking, the floating filter device for cyanobacteria control is a device used for catching and purifying cyanobacteria in urban lakes and landscape water bodies. In the process of cyanobacteria control, it is necessary to achieve a continuous operation of cyanobacteria water suction, flocculation, solid-liquid separation, and clear water return. The separated cyanobacteria are collected and disposed of in a centralized manner, and the purified water is returned to the lake. This can not only curb cyanobacteria outbreaks but also improve the eutrophication state of the water body.

[0003] In lake cyanobacteria control operations, solid-liquid separation and flocculation are core steps that directly determine the effectiveness of cyanobacteria control and the quality of water purification. However, in actual treatment processes, existing floating filtration devices have many drawbacks: First, most devices rely on complex power components such as booster pumps and centrifuges to push and separate cyanobacteria, which is not only cumbersome and energy-intensive, but also has a high failure rate and high maintenance costs, making it difficult to adapt to the needs of long-term water operations. Second, the addition of flocculants and the injection of cyanobacteria-laden water are not synchronized, resulting in uneven mixing of the agents and insufficient flocculation reaction. A large amount of cyanobacteria cannot be aggregated, leading to incomplete separation. Unflocculated cyanobacteria flow back into the lake, causing secondary pollution and resulting in a very low treatment compliance rate. Third, the device lacks a precise liquid level control structure, which can easily lead to premature overflow of unflocculated cyanobacteria-laden water and residual flocculated cyanobacteria in the separation tank during sludge discharge. At the same time, the equipment drainage design is unreasonable, and purified water tends to accumulate on the floating plate, causing the device's center of gravity to shift and making it unstable, affecting the overall patrol operation. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a floating filter device for the treatment of blue-green algae in urban lakes, thereby solving the technical problems in the prior art.

[0005] The objective of this invention can be achieved through the following technical solutions: A floating filter device for treating cyanobacteria in urban lakes, comprising: A floating plate is provided, with a float ball fixedly installed at its bottom. An installation plate is fixedly installed on the floating plate and connected to an external walking assembly. A separation tank, a temporary storage cylinder, a chemical cartridge, and a water pump are fixedly installed on the top of the floating plate. The top of the temporary storage cylinder is higher than the top of the separation tank. A connecting pipe is connected to the wall of the separation tank and is connected to the temporary storage cylinder through a first solenoid valve. The chemical cartridge is connected to the separation tank and is used to add flocculant into the separation tank. The inlet of the water pump is connected to an inlet pipe that extends into the lake. The outlet of the water pump is connected to an outlet pipe located directly above the temporary storage cylinder. A filter cylinder is fixedly installed on the outer circular surface of the separation tank and is coaxially arranged with the separation tank. The top of the filter cylinder is higher than the top of the separation tank. There is a filter cavity between the filter cylinder wall and the outer circular surface of the separation tank. Filter holes are opened on both the filter cylinder wall and the bottom of the filter cylinder.

[0006] As a further aspect of the present invention: the cartridge is located between the separating tank and the first solenoid valve, the cartridge is connected to the connecting pipe through the second solenoid valve, and the second solenoid valve and the first solenoid valve open and close synchronously.

[0007] As a further aspect of the present invention: the float plate has an opening located directly below the filter cylinder.

[0008] As a further embodiment of the present invention: a horizontal plate is fixedly installed on the top of the filter cylinder, a vertical frame is fixedly installed on the horizontal plate, a second telescopic member is fixedly installed on the vertical frame, a ball is fixedly installed on the movable end of the second telescopic member, and the ball is located directly above the separation tank. When the first solenoid valve and the second solenoid valve are opened simultaneously, the second telescopic member extends and drives the ball to descend into the separation tank.

[0009] As a further embodiment of the present invention: a gear ring and a gear are rotatably mounted on the horizontal plate, the gear ring meshes with the gear, the gear is driven to rotate by a drive source, a fixing block is fixedly mounted on the inner wall of the gear ring, and a stirring rod is connected inside the fixing block.

[0010] As a further embodiment of the present invention: the stirring rod is slidably installed in the fixed block, a circular plate is fixedly installed at the top of the stirring rod, a driving assembly is provided on the upright frame, the driving assembly is connected to the circular plate, and the driving assembly is connected to the second telescopic member. When the second telescopic member extends and drives the ball to descend into the separation tank, the driving assembly drives the circular plate to rise, so that the stirring rod rises above the separation tank.

[0011] As a further embodiment of the present invention: the driving component includes a first telescopic member, an annular plate and an annular groove. The first telescopic member is fixedly installed on the upright frame. The annular plate is fixedly connected to the movable end of the first telescopic member. The first telescopic member is connected to a second telescopic member, and the first telescopic member and the second telescopic member open and close asynchronously. The annular groove is opened at the bottom end of the annular plate, and the circular plate is slidably engaged in the annular groove.

[0012] As a further aspect of the present invention: a water level monitoring component is fixedly installed on the temporary storage cylinder. The water level monitoring component is connected to a water pump. When the water level monitoring component detects that the water level in the temporary storage cylinder has dropped to a low level, the water level monitoring component uses the water pump to transport lake water into the temporary storage cylinder until the water level in the temporary storage cylinder rises to a high level, at which point the water pump stops transporting lake water.

[0013] The beneficial effects of this invention are: 1. In this invention, the height difference between the temporary storage cylinder and the separation tank is set by the principle of communicating vessels to form a natural liquid potential energy. With the help of a water pump and an inlet pipe, the cyanobacteria water is temporarily sucked up and stored. Then, the water flow is controlled by opening and closing the first solenoid valve. There is no need for complex separation methods such as centrifugation and pressurization. The liquid surface is raised by the bottom water inlet thrust to achieve the natural overflow of flocculated cyanobacteria. This not only reduces the separation energy consumption, but also achieves in-situ stratification of cyanobacteria flocs and clear water, solving the problems of complex separation process and high energy consumption of traditional cyanobacteria treatment equipment.

[0014] 2. In this invention, the second telescopic component drives the sphere to rise and fall, and the stirring rod rises and falls synchronously. During the flocculation stage, the stirring rod accelerates the mixing of the agent and improves the flocculation effect. During the slag discharge stage, the sphere occupies the water space and raises the liquid level, ensuring that the thoroughly flocculated cyanobacteria completely overflows from the separation tank and enters the filtration chamber. At the same time, it avoids the premature overflow of unflocculated cyanobacteria back into the lake. Combined with the coaxially arranged filter cylinder, it achieves efficient solid-liquid separation, which not only improves the purity of cyanobacteria treatment, but also eliminates secondary pollution and avoids the problems of incomplete flocculation, impure separation, and substandard treatment.

[0015] 3. In this invention, the flocculant is added synchronously with the water flow by opening and closing the second solenoid valve and the first solenoid valve. The water flow impact force is used to quickly mix the agent. Combined with the flow guide design of the opening on the floating plate, the purified water can be directly returned to the lake and water accumulation on the plate can be avoided. This not only greatly shortens the flocculation reaction time and improves the treatment efficiency, but also prevents the device from accumulating water and shifting, and ensures the floating stability. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the floating plate structure in this invention; Figure 3 This is a schematic diagram of the separation tank in this invention; Figure 4 This is a schematic diagram of the annular plate in this invention; Figure 5 This is a schematic diagram of the rising structure of the sphere in this invention; Figure 6 This is a schematic diagram of the rising stirring rod structure in this invention.

[0018] In the diagram: 1. Float; 2. Float ball; 3. Mounting plate; 4. Separation tank; 401. Connecting pipe; 5. Temporary storage cylinder; 6. First solenoid valve; 7. Drug cartridge; 8. Second solenoid valve; 9. Filter cylinder; 10. Opening; 11. Water pump; 12. Inlet pipe; 13. Outlet pipe; 14. Water level monitoring component; 15. Horizontal plate; 16. Vertical frame; 17. Gear ring; 18. Fixing block; 19. Stirring rod; 20. Gear; 21. Annular plate; 22. Annular groove; 23. Circular plate; 24. First telescopic component; 25. Sphere; 26. Second telescopic component; 27. Filter chamber. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-6 As shown, the present invention is a floating filter device for the treatment of blue-green algae in urban lakes, comprising: A float 1 is provided, with a float ball 2 fixedly installed at its bottom. An installation plate 3 is fixedly installed on the float 1 and connected to an external walking assembly. A separation tank 4, a temporary storage cylinder 5, a medicine cartridge 7, and a water pump 11 are fixedly installed on the top of the float 1. The top of the temporary storage cylinder 5 is higher than the top of the separation tank 4. A connecting pipe 401 is connected to the wall of the separation tank 4 and is connected to the temporary storage cylinder 5 through a first solenoid valve 6. The medicine cartridge 7 is connected to the separation tank 4 and is used to add flocculant into the separation tank 4. The inlet of the water pump 11 is connected to an inlet pipe 12 that extends into the lake. The outlet of the water pump 11 is connected to an outlet pipe 13, and the outlet of the outlet pipe 13 is located directly above the temporary storage cylinder 5.

[0021] The filter cylinder 9 is fixedly installed on the outer circular surface of the separation tank 4 and is coaxially arranged with the separation tank 4. The top of the filter cylinder 9 is higher than the top of the separation tank 4. There is a filter cavity 27 between the cylinder wall of the filter cylinder 9 and the outer circular surface of the separation tank 4. Filter holes are opened on both the cylinder wall and the bottom of the filter cylinder 9.

[0022] The working principle of this invention is based on the principle of communicating vessels. The liquid levels in the two interconnected containers will eventually remain at the same level. By relying on the liquid level difference between the temporary storage cylinder 5 and the separation tank 4, the directional pushing of cyanobacteria water and the discharge of flocculants can be achieved.

[0023] A floating plate 1 is deployed on the lake surface, and the device is positioned by a float 2. Using an external walking assembly connected to a mounting plate 3, the device is driven to move across the entire lake surface. A water pump 11 is activated, drawing in cyanobacteria-laden water from the lake through an inlet pipe 12, and then transporting it to a temporary storage tank 5 via an outlet pipe 13. The first solenoid valve 6 is opened, and the cyanobacteria-laden water in the temporary storage tank 5 is injected into a separation tank 4 through a connecting pipe 401. Once full, the first solenoid valve 6 is closed. Subsequently, a flocculant is quantitatively added to the separation tank 4 through a cartridge 7. The flocculant reacts rapidly upon contact with the cyanobacteria-laden water, breaking up the dispersed state of the cyanobacteria cells and agglomerating the tiny, free cyanobacteria particles into larger, more compact flocs. Utilizing the natural buoyancy generated by the air sacs within the cyanobacteria cells and the fact that the density of the flocs is less than that of the water, all the flocs float evenly within the water in the separation tank 4. In the upper layer, the cyanobacteria flocs and clear water are naturally separated, eliminating the need for complex separation methods such as centrifugation and pressurization, thus reducing separation energy consumption. The first solenoid valve 6 is opened again, and the cyanobacteria water in the temporary storage cylinder 5 is continuously injected from the bottom of the separation tank 4. The thrust of the bottom water inlet gradually raises the overall water level in the separation tank 4. The flocculent cyanobacteria in the upper layer rises steadily with the water level and eventually overflows evenly from the top of the separation tank 4, falling precisely into the filter chamber 27 between the coaxially arranged filter cylinder 9 and the separation tank 4. The filter holes on the wall and bottom of the filter cylinder 9 are designed with precise apertures, which can completely intercept the flocculent cyanobacteria clusters, preventing the cyanobacteria from flowing back into the lake, while allowing the purified clear water to quickly pass through the filter holes, achieving efficient solid-liquid separation. The separated clear water flows back to the lake, improving the eutrophication state of the lake water, while the flocculent cyanobacteria are intercepted and collected on the inner wall of the filter cylinder 9, facilitating subsequent centralized cleaning and disposal.

[0024] like Figures 1-2 As shown, in a preferred embodiment of the present invention, the cartridge 7 is located between the separation tank 4 and the first solenoid valve 6. The cartridge 7 is connected to the connecting pipe 401 through the second solenoid valve 8, and the second solenoid valve 8 and the first solenoid valve 6 open and close synchronously.

[0025] In practical application, the second solenoid valve 8 operates synchronously with the first solenoid valve 6. When the first solenoid valve 6 opens and the cyanobacteria water flows from the temporary storage cylinder 5 into the separation tank 4 through the connecting pipe 401, the second solenoid valve 8 opens simultaneously. The flocculant in the cartridge 7 enters the separation tank 4 along with the high-speed flowing cyanobacteria water. The impact force of the water flow is used to achieve rapid mixing of the flocculant and the cyanobacteria water, which can accelerate the flocculation reaction, significantly shorten the cyanobacteria flocculation time, and solve the problems of uneven mixing of reagents and low reaction efficiency.

[0026] like Figures 1-2 As shown, in a preferred embodiment of the present invention, the float plate 1 has an opening 10, which is located directly below the filter cylinder 9.

[0027] In practical application, the purified water that has completed solid-liquid separation in the filter cylinder 9 drips downwards under the action of gravity and flows directly back to the lake through the opening 10 on the float plate 1 that is directly opposite the filter cylinder 9, thus avoiding the accumulation of purified water on the surface of the float plate 1.

[0028] like Figures 1-6 As shown, in a preferred embodiment of the present invention, a horizontal plate 15 is fixedly installed on the top of the filter cylinder 9, a vertical frame 16 is fixedly installed on the horizontal plate 15, a second telescopic member 26 is fixedly installed on the vertical frame 16, and a ball 25 is fixedly installed on the movable end of the second telescopic member 26. The ball 25 is located directly above the separation tank 4. When the first solenoid valve 6 and the second solenoid valve 8 are opened simultaneously, the second telescopic member 26 extends and drives the ball 25 to descend into the separation tank 4.

[0029] In one embodiment, the second telescopic member 26 may be an electric cylinder, an electric telescopic rod, or other mechanisms capable of lifting and lowering. This embodiment does not impose any specific limitations on these components.

[0030] In practical application, before the flocculation reaction is completed and the flocculated cyanobacteria are ready to be discharged, the second telescopic component 26 extends to drive the sphere 25 to descend and immerse itself in the water in the separation tank 4. The sphere 25 uses its own volume to occupy the water space in the separation tank 4, quickly raising the liquid level in the separation tank 4 so that the liquid level is close to the top of the separation tank 4. At this time, the first solenoid valve 6 and the second solenoid valve 8 are opened to inject cyanobacteria water and flocculant, and the liquid level rises further, ensuring that the flocculated cyanobacteria floating on the water surface completely flows out of the separation tank 4 and enters the filter chamber 27. After discharge, the first solenoid valve 6 and the second solenoid valve 8 are closed, and the second telescopic component 26 retracts to drive the sphere 25 to rise and detach from the liquid surface. The liquid level in the separation tank 4 then drops away from the top, avoiding the premature overflow of incompletely flocculated cyanobacteria water and the problem of incompletely flocculated cyanobacteria flowing back into the lake and failing to meet treatment standards.

[0031] like Figures 1-4 As shown, in a preferred embodiment of the present invention, a gear ring 17 and a gear 20 are rotatably mounted on the horizontal plate 15. The gear ring 17 meshes with the gear 20, and the gear 20 is driven to rotate by a drive source. A fixing block 18 is fixedly mounted on the inner wall of the gear ring 17, and a stirring rod 19 is connected inside the fixing block 18.

[0032] In one embodiment, the driving source may be a servo motor, a servo motor or other components, or other mechanisms capable of rotational motion. This embodiment does not impose specific limitations on these components.

[0033] In practical application, after the cyanobacterial water and flocculant are injected into the separation tank 4, the drive source starts and drives the gear 20 to rotate. The gear 20 meshes and drives the gear ring 17 to rotate synchronously. The gear ring 17 drives the stirring rod 19 to perform circumferential stirring in the separation tank 4 through the fixed block 18, further breaking up the cyanobacterial flocs, accelerating the uniform fusion of the flocculant and the water, and improving the flocculation effect. At this time, the sphere 25 is in an upward state and the liquid level in the separation tank 4 is low. Even if the stirring generates a vortex and the liquid level on the cylinder wall rises locally, it will not exceed the top of the separation tank 4, avoiding premature overflow and backflow of unreacted cyanobacterial water, and ensuring that the flocculation reaction is fully carried out.

[0034] like Figures 1-6 As shown, in a preferred embodiment of the present invention, the stirring rod 19 is slidably installed in the fixed block 18, and a circular plate 23 is fixedly installed on the top of the stirring rod 19. A driving assembly is provided on the upright frame 16. The driving assembly is connected to the circular plate 23 and to the second telescopic member 26. When the second telescopic member 26 extends and drives the ball 25 to descend into the separation tank 4, the driving assembly drives the circular plate 23 to rise, so that the stirring rod 19 rises above the separation tank 4.

[0035] Specifically, the drive assembly includes a first telescopic member 24, an annular plate 21, and an annular groove 22. The first telescopic member 24 is fixedly installed on the upright frame 16. The annular plate 21 is fixedly connected to the movable end of the first telescopic member 24. The first telescopic member 24 is connected to a second telescopic member 26, and the first telescopic member 24 and the second telescopic member 26 open and close asynchronously. The annular groove 22 is opened at the bottom end of the annular plate 21, and the circular plate 23 is slidably engaged in the annular groove 22.

[0036] In one embodiment, the first telescopic member 24 may be an electric cylinder, an electric telescopic rod, or other mechanisms capable of lifting and lowering. This embodiment does not impose any specific limitations on these components.

[0037] In practical application, after the stirring rod 19 completes the stirring operation, the first telescopic component 24 retracts, causing the annular plate 21 to rise upwards. Relying on the sliding engagement structure between the annular groove 22 and the circular plate 23, the annular plate 21 drives the circular plate 23 to rise synchronously, thereby pulling the stirring rod 19 to slide upwards along the fixed block 18 until the stirring rod 19 is completely separated from the liquid surface in the separation tank 4. At this time, the flocculation reaction continues, and the cyanobacteria gradually flocculate into clumps. Keeping the stirring rod 19 away from the liquid surface can prevent the flocculated clumps from adhering to the surface of the rod, preventing the stirring rod 19 from sticking to the cyanobacteria and clogging the pipeline, affecting the subsequent stirring efficiency, and reducing the difficulty of subsequent cleaning.

[0038] like Figures 1-2As shown, in a preferred embodiment of the present invention, a water level monitoring component 14 is fixedly installed on the temporary storage cylinder 5. The water level monitoring component 14 is connected to the water pump 11. When the water level monitoring component 14 detects that the water level in the temporary storage cylinder 5 has dropped to a low level, the water level monitoring component 14 uses the water pump 11 to transport lake water into the temporary storage cylinder 5 until the water level in the temporary storage cylinder 5 rises to a high level, at which point the water pump 11 stops transporting lake water.

[0039] In one embodiment, it should be noted that the water level monitoring component 14 described in this invention is prior art, and this invention does not improve upon it. Therefore, it is not necessary to disclose its specific mechanical and circuit structures, and this does not affect the integrity of this invention.

[0040] In practical application, each time the first solenoid valve 6 is opened to inject water into the separation tank 4, the water level in the temporary storage cylinder 5 drops to the same level as the water level in the separation tank 4, and the liquid level difference temporarily disappears, making it impossible to carry out the next round of pushing operation. The water level monitoring component 14 monitors the water level value in the temporary storage cylinder 5 in real time. When the water level drops to the low threshold, the suction pump 11 is automatically triggered to start, continuously sucking the blue-green algae water to replenish the temporary storage cylinder 5. When the water level in the temporary storage cylinder 5 rises back to the high threshold and the preset liquid level difference is restored, the water level monitoring component 14 controls the suction pump 11 to stop, realizing automatic replenishment of blue-green algae water, ensuring continuous cyclic operation of the device, eliminating the need for manual water replenishment, and improving the automation level and operation continuity of blue-green algae treatment.

[0041] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A floating filter device for treating cyanobacteria in urban lakes, characterized in that, include: A float (1) is provided, with a float ball (2) fixedly installed at the bottom. An installation plate (3) is fixedly installed on the float (1), and the installation plate (3) is connected to an external walking assembly. A separation tank (4), a temporary storage cylinder (5), a medicine cartridge (7), and a water pump (11) are fixedly installed on the top of the float (1). The top of the temporary storage cylinder (5) is higher than the top of the separation tank (4). A connecting pipe (401) is connected to the wall of the separation tank (4). The connecting pipe (401) is connected to the temporary storage cylinder (5) through the first solenoid valve (6), the medicine cylinder (7) is connected to the separation tank (4), the medicine cylinder (7) is used to add flocculant into the separation tank (4), the inlet of the water pump (11) is connected to the inlet pipe (12), the inlet pipe (12) extends into the lake, the outlet of the water pump (11) is connected to the outlet pipe (13), and the outlet of the outlet pipe (13) is located directly above the temporary storage cylinder (5); The filter cylinder (9) is fixedly installed on the outer circular surface of the separation tank (4) and is coaxially arranged with the separation tank (4). The top of the filter cylinder (9) is higher than the top of the separation tank (4). There is a filter cavity (27) between the cylinder wall of the filter cylinder (9) and the outer circular surface of the separation tank (4). Filter holes are provided on both the cylinder wall and the bottom of the filter cylinder (9).

2. The floating filter device for treating cyanobacteria in urban lakes according to claim 1, characterized in that, The cartridge (7) is located between the separator (4) and the first solenoid valve (6). The cartridge (7) is connected to the connecting pipe (401) through the second solenoid valve (8), and the second solenoid valve (8) and the first solenoid valve (6) open and close synchronously.

3. A floating filter device for treating cyanobacteria in urban lakes according to claim 1, characterized in that, The float (1) has an opening (10) located directly below the filter cylinder (9).

4. A floating filter device for treating cyanobacteria in urban lakes according to claim 2, characterized in that, A horizontal plate (15) is fixedly installed on the top of the filter cylinder (9). A vertical frame (16) is fixedly installed on the horizontal plate (15). A second telescopic component (26) is fixedly installed on the vertical frame (16). A ball (25) is fixedly installed on the movable end of the second telescopic component (26). The ball (25) is located directly above the separation tank (4). When the first solenoid valve (6) and the second solenoid valve (8) are opened simultaneously, the second telescopic component (26) extends and drives the ball (25) to descend into the separation tank (4).

5. A floating filter device for treating cyanobacteria in urban lakes according to claim 4, characterized in that, A gear ring (17) and a gear (20) are rotatably mounted on the horizontal plate (15). The gear ring (17) meshes with the gear (20). The gear (20) is driven to rotate by a drive source. A fixing block (18) is fixedly mounted on the inner wall of the gear ring (17). A stirring rod (19) is connected inside the fixing block (18).

6. A floating filter device for treating cyanobacteria in urban lakes according to claim 5, characterized in that, The stirring rod (19) is slidably installed in the fixed block (18). A circular plate (23) is fixedly installed at the top of the stirring rod (19). A driving assembly is provided on the upright frame (16). The driving assembly is connected to the circular plate (23) and the driving assembly is connected to the second telescopic member (26). When the second telescopic member (26) extends and drives the ball (25) to descend into the separation tank (4), the driving assembly drives the circular plate (23) to rise, so that the stirring rod (19) rises above the separation tank (4).

7. A floating filter device for treating cyanobacteria in urban lakes according to claim 6, characterized in that, The drive assembly includes a first telescopic member (24), an annular plate (21), and an annular groove (22). The first telescopic member (24) is fixedly installed on the upright frame (16). The annular plate (21) is fixedly connected to the movable end of the first telescopic member (24). The first telescopic member (24) is connected to the second telescopic member (26), and the first telescopic member (24) and the second telescopic member (26) open and close asynchronously. The annular groove (22) is opened at the bottom end of the annular plate (21), and the circular plate (23) is slidably engaged in the annular groove (22).

8. A floating filter device for treating cyanobacteria in urban lakes according to claim 1, characterized in that, A water level monitoring component (14) is fixedly installed on the temporary storage cylinder (5). The water level monitoring component (14) is connected to the water pump (11). When the water level monitoring component (14) monitors that the water level in the temporary storage cylinder (5) drops to a low level, the water level monitoring component (14) uses the water pump (11) to transport lake water into the temporary storage cylinder (5) until the water level in the temporary storage cylinder (5) rises to a high level, at which point the water pump (11) stops transporting lake water.

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