Underwater cleaning equipment

Abstract

The invention relates to the technical field of algae cleaning, in particular to underwater cleaning equipment which comprises a floating platform, lifting devices are arranged on the floating platform, a plurality of lifting devices are arranged on the floating platform, and a protection bin connected through the lifting devices is arranged below the floating platform. A suction machine and a filtering device are arranged in the protection bin, a cutting device is fixedly arranged on the lower portion of the protection bin, the water inlet end of the suction machine sucks water through the cutting device, the water outlet end of the suction machine is connected with the filtering device, and the filtering device filters water fed by the suction machine. The device has the effect of directly collecting the algae on the surface of the phosphorus-absorbing stone at the bottom of the pond after cleaning.

Description

Technical Field

[0001] The present application relates to the technical field of algae cleaning, and in particular to an underwater cleaning device. Background Art

[0002] To ensure clean pond water quality, porous phosphate-absorbing stones are often laid at the bottom of ponds. These absorb phosphorus, nitrogen, and organic nutrients secreted by fish, making them a suitable substrate for algae growth. When algae grow on the surface of the porous phosphate-absorbing stone, they serve as food for the fish, reducing the amount of fish food they need to feed. However, over time, excessive algae growth can easily affect the stone's function.

[0003] Related art discloses a pool pebble cleaning device comprising a main body and a pusher. The main body is V-shaped and consists of a first and second symmetrical body. The outer surfaces of the first and second bodies are arranged at an angle to the horizontal plane, and the first and second bodies are symmetrically provided with connecting holes. The pusher comprises a connecting member and a gripping member. The connecting member is rotatably connected to the main body through the connecting hole, and the gripping member is fixedly connected to the connecting member. During use, the main body is moved along the bottom of the pool. The pebble then flips due to the action of the inclined surface. During the flipping process, algae attached to the pebble surface falls off the pebble.

[0004] However, the above structure requires subsequent collection of algae from the surface of the pebbles, which is a cumbersome operation. Summary of the Invention

[0005] In order to clean the algae on the surface of the phosphate-absorbing stone at the bottom of the pond and collect them directly, the present application provides an underwater cleaning device.

[0006] This application provides an underwater cleaning device, which adopts the following technical solutions: An underwater cleaning device includes a floating platform, a lifting device is provided on the floating platform, and multiple lifting devices are arranged on the floating platform. A protection warehouse connected by the lifting device is provided below the floating platform, a suction machine and a filtering device are provided in the protection warehouse, and a cutting device is fixedly provided at the lower part of the protection warehouse. The water inlet end of the suction machine absorbs water through the cutting device, and the water outlet end of the suction machine is connected to the filtering device, and the filtering device filters the water sent in by the suction machine.

[0007] By adopting the above technical solution, when in use, the floating platform is used to float on the water surface, the protective chamber below the floating platform can be lifted and lowered by a lifting device, and the cutting device provided on the protective chamber can be moved to the surface of the phosphate absorbing stone. The cutting device cuts the algae on the surface of the phosphate absorbing stone, and the suction machine keeps sucking water. Since the water enters from the position of the cutting device, the algae are easier to cut. At the same time, after cutting, the algae will reach the suction machine with the water flow, and then be sent to the filtering device to filter and collect the algae, so that the algae on the surface of the phosphate absorbing stone at the bottom of the pond can be cleaned and directly collected more conveniently; the floating platform is on the water surface for the operator to observe the position.

[0008] Preferably, the lifting device includes a lifting motor, a take-up wheel and a pull rope. The lifting device is provided with four and arranged in a rectangular shape. The lifting motor is fixed on a floating platform, the take-up wheel is coaxially fixed on the output shaft of the lifting motor, one end of the pull rope is wrapped around the take-up wheel, and the other end is fixed on the side wall of the protective bin.

[0009] By adopting the above technical solution, four lifting devices are provided, and the lifting devices include a lifting motor, a take-up wheel and a pull rope. When the lifting motor is working, the lifting motor drives the take-up wheel to rotate, thereby winding and unwinding the pull rope to adjust the height of the protection bin. The winding lengths of the pull ropes in the four lifting devices are different, and the direction of the cutting device can be adjusted to adapt to surfaces with different degrees of inclination. At the same time, when two of the four lifting devices release the tension on the protection bin, the cutting device rotates to a horizontal direction, so that the cutting device can clean the algae on the vertical side walls of the pond.

[0010] Preferably, the floating platform includes a middle plate and an outer capsule ring fixed on the edge of the middle plate, the position between the upper surface of the middle plate and the outer capsule ring forms a collection area, a through hole is opened on the middle plate, and the filtering device is connected to a pushing device, and the pushing device is used to send the filtering device from the position of the through hole to the top of the middle plate, and the filtering device pours out the algae collected by the filtering device through the pushing device.

[0011] By adopting the above technical solution, a collection area is formed between the middle plate and the outer capsule ring body, so that after the pushing device sends the filter device from the position of the through hole to the top of the middle plate, the filter device pours the collected algae into the collection area, thereby enabling the filter device to be cleaned in time, improving the suction efficiency of the suction machine, and at the same time enabling the filter device to be cleaned in time.

[0012] Preferably, a stop cone is fixedly provided on the upper surface of the intermediate flat plate, the lower end of the stop cone is connected to the through hole, an upper stop block is provided on the side wall of the upper end of the stop cone, the filtering device includes a filter barrel, a lower stop block is provided at the middle position of the side wall of the filter barrel, and the filter barrel is rotatably connected to the ejection device, when the ejection device moves the filter barrel upward, the lower stop block abuts against the bottom of the upper stop block and causes the filter barrel to rotate.

[0013] By adopting the above technical solution, the lower end of the retaining cone is connected to the through-hole, allowing the filter barrel to enter the retaining cone through the through-hole under the action of the ejection device. When the lower stopper on the filter barrel abuts below the upper stopper, the ejection device continues to move the filter barrel upward, causing the filter barrel to rotate vertically, with the opening of the filter barrel facing downward, and pouring algae along the outer wall of the retaining cone into the collection area. At the same time, the retaining cone can also help to accumulate more algae in the collection area.

[0014] Preferably, an outer barrel is provided on the outside of the filter barrel, and the outer barrel is fixed in the protective bin. The ejection device includes an ejection motor, a driving gear, a driven gear and a screw. The ejection motor is fixed on the protective bin, and the driving gear is coaxially fixed on the output shaft of the ejection motor. The driven gear is rotatably connected to the bottom of the outer barrel, and the screw is threadedly connected to the middle part of the driven gear. The screw is slidably connected to the outer barrel, and the upper end of the screw is vertically rotatably connected to the side wall of the filter barrel through a U-shaped frame.

[0015] By adopting the above technical solution, the outer barrel is fixed in the protective bin, and the driven gear is rotatably connected to the bottom of the outer barrel. When the ejection motor is working, the ejection motor drives the driving gear to rotate, and the driving gear then drives the driven gear to rotate, so that the screw drives the filter barrel to rise and fall, making it convenient for the filter barrel to pour out algae and return to the outer barrel.

[0016] Preferably, the protective bin is rotatably connected to a cover body for covering the outer barrel, the cover body is fixedly provided with an inner plug for sealing the filter barrel, the water outlet end of the suction machine is connected to the filter barrel through a hose from the middle of the cover body, and the cover body is connected to a closing device for driving the cover body to rotate.

[0017] By adopting the above technical solution, an inner plug is fixedly provided on the cover body, and the cover body is rotated through the closing device, so that when the cover body is covered on the outer barrel, the inner plug also blocks the filter barrel, so that all the water transported by the hose at the water outlet of the suction machine is filtered through the filter barrel, and after the cover body is opened, the filter barrel can be removed from the outer barrel.

[0018] Preferably, the closing device includes a closing motor, a worm and a worm wheel, the cover body is rotatably connected to the protective chamber via a rotating shaft, the rotating shaft is fixed to the cover body, the worm wheel is coaxially fixed to the rotating shaft, the closing motor is fixed in the protective chamber, the worm is coaxially fixed to the output shaft of the closing motor, and the worm is engaged with the worm wheel.

[0019] By adopting the above technical solution, when the closing motor is working, the closing motor drives the worm to rotate, and the worm drives the worm wheel to rotate, thereby rotating the cover body so that the cover body is covered on the outer barrel. At the same time, due to the self-locking of the worm and the worm wheel, the cover body can be kept sealed to the outer barrel.

[0020] Preferably, a water outlet pipe is fixedly provided on the outer barrel, one end of the water outlet pipe is connected to the interior of the outer barrel, and the other end faces away from the direction of the cutting device.

[0021] By adopting the above technical solution, one end of the water outlet pipe is connected to the outer barrel. When the filtered water in the outer barrel flows out from the water outlet pipe, the water flowing out of the water outlet pipe can generate thrust, making it easier for the cutting device to stick to the position where cutting is required, so that the cutting device can cut more algae.

[0022] Preferably, the cutting device includes a cylinder, a knife net, a knife head and a cutting motor. The cylinder is fixed at the lower part of the protective bin and connected to the water inlet end of the suction machine. The knife net is fixed at one end of the cylinder away from the protective bin. The knife head cooperates with the knife net and is located in the cylinder. The cutting motor is fixed in the cylinder, and the knife head is coaxially fixed on the output shaft of the cutting motor.

[0023] By adopting the above technical solution, the cylinder is fixed in the protective bin and connected to the water inlet end of the suction machine, so that the water inlet end of the suction machine is filled with water from the end of the cylinder where the knife net is set, so that the water flow can more easily guide the algae into the knife net, so that the algae entering the cylinder can be cut when the knife head rotates.

[0024] Preferably, the knife net adopts a strip-shaped grid.

[0025] By adopting the above technical solution, the knife net adopts a strip-shaped grid, so that the knife net can enter the sheet-shaped leaves, so that the leaves at the bottom of the pond can also enter the cutting device under the action of the suction machine, and are used to clean the leaves at the bottom of the pond.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The protective chamber under the floating platform moves downward under the action of the lifting device, and the cutting device can move to the surface of the phosphate absorbing stone and cut the algae. At the same time, the cut algae will be transported to the suction machine with the water flow, and then sent to the filtering device for filtering and collecting the algae. In this way, the algae on the surface of the phosphate absorbing stone at the bottom of the pond can be cleaned and collected directly more conveniently; 2. The cutting device's orientation can be adjusted to accommodate surfaces of varying inclinations by adjusting the lengths of the pull cords in the four lifting devices. When the two lifting devices release the tension on the protective chamber, the cutting device rotates to a horizontal orientation, enabling it to clean algae from the vertical sidewalls of the pond. 3. The knife net adopts a strip grid so that the knife net can enter the flaky leaves, so that the leaves at the bottom of the pond can also enter the cutting device under the action of the suction machine, which is used to clean the leaves at the bottom of the pond. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a cutaway outer capsule ring body according to an embodiment of the present application; Figure 2 This is a schematic diagram of the structure inside the protective chamber in an embodiment of the present application; Figure 3 This is a schematic diagram of the connection structure of the suction machine in the embodiment of the present application; Figure 4 This is a schematic diagram of the position of the lifting device in the embodiment of the present application; Figure 5 It is a schematic structural diagram of the cutting device in an embodiment of the present application.

[0028] Explanation of reference numerals: 1. floating platform; 11. middle plate; 111. through hole; 12. outer bag ring; 13. collecting area; 14. stop cone; 15. upper stopper; 2. cutting device; 21. cylinder; 22. knife net; 23. knife head; 24. cutting motor; 3. lifting device; 31. lifting motor; 32. take-up wheel; 33. pull rope; 4. power source; 5. protection chamber; 51. cover; 52. inner plug; 53. Connecting hole; 54, water-blocking chamber; 6, suction machine; 61, hose; 62, water outlet pipe; 7, filtering device; 71, filtering barrel; 711, lower block; 72, outer barrel; 8, ejection device; 81, ejection motor; 82, driving gear; 83, driven gear; 84, screw; 841, long groove; 842, U-shaped frame; 9, closing device; 91, closing motor; 92, worm; 93, worm wheel; 94, rotating shaft. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] The present application discloses an underwater cleaning device, referring to Figure 1 The invention comprises a floating platform 1 and a cutting device 2 disposed below the floating platform 1. A lifting device 3 is mounted on the floating platform 1 for adjusting the height of the cutting device 2. The floating platform 1 is also equipped with two power sources 4, which are used to move the floating platform 1 on the water surface. The two power sources 4 are spaced apart and can steer the floating platform 1 using different driving forces. The lifting device 3 lowers the cutting device 2 to the bottom of the pond, allowing it to adhere to the surface of the phosphate stone and remove algae. The cutting device 2 is then moved along the surface of the phosphate stone by the lifting device 3 and the floating platform 1, thereby completing the algae removal process.

[0031] refer to Figure 2A protective chamber 5 is located below the floating platform 1. A suction machine 6 is installed within the protective chamber 5. The water inlet of the suction machine 6 is connected to the position of the cutting device 2, and the water outlet of the suction machine 6 is connected to the filter device 7. When in use, the suction machine 6 continuously delivers water from the position of the cutting device 2 to the position of the filter device 7. Since the cutting device 2 can cut algae from the phosphate absorption stone and the water flows into the filter device 7, the filter device 7 collects the algae, making it convenient to clean the algae in one go. A sonic fish repellent is installed within the protective chamber 5. The sound generated by the sonic fish repellent drives away fish in the pond to prevent them from being caught in the cutting device 2.

[0032] refer to Figure 2 Floating platform 1 includes a central plate 11 and an outer bladder ring 12. The outer bladder ring 12 is arranged in a circular pattern around the central plate 11, forming a collection area 13 between the upper surface of the central plate 11 and the outer bladder ring 12. This area is used to store the collected algae. A push-out device 8 is located within the protective chamber 5. This push-out device 8 is used to move algae collected by the filter 7 to the collection area 13, allowing for timely removal of the algae from the filter 7, reducing obstruction to the filter 7 and providing smoother suction for the suction machine 6.

[0033] refer to Figure 2 and Figure 3 The ejection device 8 includes an ejection motor 81, a driving gear 82, a driven gear 83 and a screw 84. A through hole 111 is provided on the middle plate 11, and the bottom of the through hole 111 is directly opposite to the filter device 7. The filter device 7 includes a filter barrel 71 and an outer barrel 72 for accommodating the filter barrel 71. The outer barrel 72 is fixed inside the protective bin 5. The top of the filter barrel 71 is open and is used to connect to the suction machine 6. The screw 84 is arranged vertically, and the filter barrel 71 is provided at the upper end of the screw 84. The screw 84 passes through the bottom of the outer barrel 72, and the screw 84 is slidably connected to the outer barrel 72 and cannot rotate relative to each other. In this embodiment, a long groove 841 is provided on the outer wall of the screw 84, and a protrusion extending into the long groove 841 is provided at the bottom of the outer barrel 72. The driven gear 83 is rotatably connected to the bottom of the outer barrel 72 and is located outside the outer barrel 72. The screw 84 passes through the driven gear 83 and is threadedly connected to the middle portion of the driven gear 83. The ejection motor 81 is fixed to the outer barrel 72 or the protective chamber 5. The output shaft of the ejection motor is coaxially fixed with the driving gear 82, and the driving gear 82 meshes with the driven gear 83. When the ejection motor 81 is in operation, the ejection motor 81 drives the driving gear 82 to rotate, and the driving gear 82 drives the driven gear 83 to rotate, allowing the screw 84 to move in the vertical direction. The screw 84 removes the filter barrel 71 from the inner portion of the outer barrel 72. The through hole 111 is directly opposite the upper opening of the outer barrel 72, and the filter barrel 71 moves from the through hole 111 to the top of the middle plate 11.

[0034] refer to Figure 2 and Figure 3 A retaining cone 14 is fixedly mounted on the upper surface of the middle plate 11. Cone 14 is positioned opposite through-hole 111, and its lower opening is larger than its upper opening. After the filter barrel 71 passes through through-hole 111, it first enters the retaining cone 14. Because the lower opening of retaining cone 14 is larger, it is convenient to align the outer barrel 72 with the position of retaining cone 14 before the outer barrel 72 extends out from the upper end of retaining cone 14. An upper retaining block 15 is located at the upper end of retaining cone 14, extending from the inner wall of retaining cone 14 toward the center of retaining cone 14. A lower retaining block 711 is located in the middle of the outer wall of the filter barrel 71, directly below the upper retaining block 15. A U-shaped bracket 842 is fixed to the upper end of the screw 84. The ends of the U-shaped bracket 842 are positioned relative to the sidewalls of the filter barrel 71, and the middle portion of the U-shaped bracket 842 is positioned below the filter barrel 71, vertically pivoting the ends of the U-shaped bracket 842 to the middle portion of the filter barrel 71. When the filter barrel 71 moves upward under the action of the screw 84, the lower stopper 711 on the filter barrel 71 is blocked by the upper stopper 15 on the stop cone 14, causing the filter barrel 71 to rotate upward about the hinge axis connecting the U-shaped bracket 842 and the filter barrel 71. This causes the filter barrel 71 to rotate, tilting the opening of the filter barrel 71 downward, allowing the algae in the filter barrel 71 to be poured out along the outer wall of the stop cone 14 into the collection area 13. As the screw 84 moves downward, the filter barrel 71 rotates again to an upward-facing position and enters the outer barrel 72.

[0035] refer to Figure 2 and Figure 3 A cover 51 is provided at the upper opening of the outer barrel 72. The cover 51 is rotatably connected to the outside of the protective chamber 5. The cover 51 is used to cover the upper opening of the outer barrel 72. An inner plug 52 is provided on the cover 51. The inner plug 52 is used to cover the upper end of the filter barrel 71. A hose 61 is connected to the water outlet of the suction machine 6. One end of the hose 61 is connected to the suction machine 6, and the other end is connected to the outside of the cover 51. A connecting hole 53 is provided on the cover 51 and the inner plug 52, so that the hose 61 can be connected to the interior of the filter barrel 71 through the connecting hole 53. A closing device 9 is connected to the cover 51. The closing device 9 is used to rotate the cover 51 so that the cover 51 covers the outer barrel 72 and the filter barrel 71, or to open the outer barrel 72 to facilitate the removal of the filter barrel 71 from the upper opening of the outer barrel 72.

[0036] refer to Figure 2 and Figure 3The closing device 9 includes a closing motor 91, a worm 92, and a worm gear 93. A rotating shaft 94 is fixedly mounted on one side of the cover 51. The rotating shaft 94 is rotatably connected to the protective chamber 5. The worm gear 93 is fixedly mounted coaxially with the rotating shaft 94. The closing motor 91 is fixed to the outer barrel 72 or the inner wall of the protective chamber 5. The output shaft of the closing motor 91 is fixedly mounted coaxially with the worm 92, and the worm 92 meshes with the worm gear 93. When the closing motor 91 is operating, the worm 92 rotates and drives the rotating shaft 94 through the worm gear 93, thereby rotating the cover 51, closing or opening the outer barrel 72 and the filter barrel 71. When the suction machine 6 is operating, the suction machine 6 draws water containing algae into the filter barrel 71 through the hose 61, the cover 51, and the connecting hole 53. The outer wall of the filter barrel 71 is spaced apart from the inner wall of the outer barrel 72, allowing algae in the water to be filtered by the filter barrel 71 and then enter the outer barrel 72. A water outlet pipe 62 is connected to the side wall of the outer barrel 72. One end of the water outlet pipe 62 communicates with the interior of the outer barrel 72, and the other end extends out of the protective chamber 5, facing away from the cutting device 2. Water drawn into the cutting device 2 by the suction machine 6 then flows out of the water outlet pipe 62, pushing the cutting device 2 toward the surface to be cut. A water barrier 54 is provided within the protective chamber 5. The water barrier 54 is used to separate the protective chamber 5 and accommodates the hose 61. The water barrier 54 can separate the protective chamber 5 to protect the suction machine 6, ejection motor 81, and closing motor 91 within.

[0037] refer to Figure 4 The lifting device 3 includes a lifting motor 31, a take-up wheel 32 and a pull rope 33. The lifting motor 31 is fixed to the upper surface of the middle plate 11, and the take-up wheel 32 is fixed to the output shaft of the lifting motor 31. One end of the pull rope 33 is fixed to the take-up wheel 32, and the other end is fixed to the side wall of the protective bin 5. The lifting motor 31 and the take-up wheel 32 can be covered with a protective cover on the middle plate 11 for protection. Four lifting devices 3 are arranged, and the four lifting devices 3 are arranged in a rectangular shape, so that the pull ropes 33 in the four lifting devices 3 are respectively connected to the four corners of the protective bin 5, and the pull ropes 33 in the four lifting devices 3 can be adjusted separately. By adjusting the length of the four pull ropes 33 in the four lifting devices 3, the end direction of the cutting device 2 can be adjusted. At the same time, when the side wall of the pond needs to be cleaned, the pull ropes 33 in the two lifting devices 3 are loosened to pull the protective chamber 5. At this time, the protective chamber 5 will rotate to a horizontal state, so that the end of the cutting device 2 is horizontally facing the vertical side wall of the pond. Then, the cutting device 2 is attached to the side wall of the pond with the help of the suction machine 6 for cutting, so that the algae on the side wall of the pond can also be cleaned.

[0038] refer to Figure 5The cutting device 2 includes a cylinder 21, a blade net 22, a cutter head 23, and a cutting motor 24. The cylinder 21 is fixed in the middle of the protective chamber 5 and faces vertically downward. One end of the cylinder 21 is connected to the protective chamber 5 and is connected to the water inlet of the suction machine 6 through a pipe. The blade net 22 is fixed to the end of the cylinder 21 away from the protective chamber 5. The blade net 22 can reduce the damage of the blade head 23 to the phosphate stone. The blade head 23 is located inside the cylinder 21 and cooperates with the blade net 22 to cut. The blade net 22 uses a strip-shaped grid. The strip-shaped grid of the blade net 22 can enter flaky materials, such as leaves that have fallen into the pond. After the suction machine 6 draws the leaves to the position of the blade net 22, the blade head 23 cuts the leaves and collects them along with the algae. When the leaves are flatly sucked onto the blade net 22, the impact of the water flow can cause the leaves to fold through the strip-shaped grid of the blade net 22 and enter the cylinder 21. The cutting motor 24 is fixed inside the barrel 21 , and the output shaft of the cutting motor 24 is fixedly connected to the cutter head 23 , so that the cutting motor 24 drives the cutter head 23 to rotate.

[0039] The working process of this embodiment: First, inflate the outer bag ring 12 so that the outer bag ring 12 can float on the water surface of the pond. Then, the lifting device 3 moves the protection chamber 5 downward to the bottom of the pond and adjusts the direction of the cutting device 2 according to the different extension amounts of the pull rope 33 so that the cutting device 2 can be attached to the phosphate stone or the side wall of the pond. Then, the cutting device 2 cleans the algae. At the same time, the suction machine 6 sends the water containing algae into the filtering device 7. The filter barrel 71 in the filtering device 7 collects the algae. When the algae in the filter barrel 71 needs to be poured out, the lifting device 3 moves the protection chamber 5 upward, and the cover body 51 opens the filter barrel 71. When the protection chamber 5 abuts against the lower surface of the middle flat plate 11, the pushing device 8 moves the filter barrel 71 upward. When the lower stop block 711 on the side wall of the filter barrel 71 abuts against the upper stop block 15, the filter barrel 71 rotates to pour the algae in the filter barrel 71 into the collection area 13, and then the filter barrel 71 is retracted into the outer barrel 72.

[0040] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An underwater cleaning device, characterized in that: The invention comprises a floating platform (1), a lifting device (3) is provided on the floating platform (1), a plurality of the lifting devices (3) are arranged on the floating platform (1), a protection bin (5) connected via the lifting device (3) is provided below the floating platform (1), a suction machine (6) and a filter device (7) are provided in the protection bin (5), a cutting device (2) is fixedly provided at the bottom of the protection bin (5), a water inlet end of the suction machine (6) absorbs water via the cutting device (2), a water outlet end of the suction machine (6) is connected to the filter device (7), and the filter device (7) filters the water sent in by the suction machine (6).

2. The underwater cleaning device according to claim 1, characterized in that: The lifting device (3) comprises a lifting motor (31), a take-up wheel (32) and a pull rope (33). The lifting device (3) is provided with four and arranged in a rectangular shape. The lifting motor (31) is fixed on the floating platform (1), the take-up wheel (32) is coaxially fixed on the output shaft of the lifting motor (31), one end of the pull rope (33) is wound around the take-up wheel (32), and the other end is fixed on the side wall of the protection chamber (5).

3. The underwater cleaning device according to claim 1, characterized in that: The floating platform (1) comprises a middle plate (11) and an outer capsule ring (12) fixed to the edge of the middle plate (11); a collection area (13) is formed between the upper surface of the middle plate (11) and the outer capsule ring (12); a through hole (111) is provided on the middle plate (11); the filter device (7) is connected to a push-out device (8); the push-out device (8) is used to send the filter device (7) from the position of the through hole (111) to the top of the middle plate (11); the filter device (7) pours out the algae collected by the filter device (7) through the push-out device (8).

4. The underwater cleaning device according to claim 3, characterized in that: A stop cone (14) is fixedly provided on the upper surface of the intermediate plate (11), the lower end of the stop cone (14) is connected to the through hole (111), and an upper stop block (15) is provided on the side wall of the upper end of the stop cone (14). The filtering device (7) comprises a filter barrel (71), and a lower stop block (711) is provided at the middle position of the side wall of the filter barrel (71). The filter barrel (71) is rotatably connected to the ejection device (8). When the ejection device (8) moves the filter barrel (71) upward, the lower stop block (711) abuts against the bottom of the upper stop block (15) and causes the filter barrel (71) to rotate.

5. The underwater cleaning device according to claim 4, characterized in that: An outer barrel (72) is provided on the outside of the filter barrel (71), and the outer barrel (72) is fixed in the protection bin (5). The ejection device (8) comprises an ejection motor (81), a driving gear (82), a driven gear (83) and a screw (84). The ejection motor (81) is fixed on the protection bin (5), the driving gear (82) is coaxially fixed on the output shaft of the ejection motor (81), the driven gear (83) is rotatably connected to the bottom of the outer barrel (72), the screw (84) is threadedly connected to the middle of the driven gear (83), the screw (84) is slidably connected to the outer barrel (72), and the upper end of the screw (84) is vertically rotatably connected to the side wall of the filter barrel (71) through a U-shaped frame (842).

6. The underwater cleaning device according to claim 5, characterized in that: The protective chamber (5) is rotatably connected to a cover body (51) for covering the outer barrel (72); an inner plug (52) for sealing the filter barrel (71) is fixedly provided on the cover body (51); the water outlet of the suction machine (6) is connected to the filter barrel (71) through a hose (61) from the middle of the cover body (51); and a closing device (9) for driving the cover body (51) to rotate is connected to the cover body (51).

7. The underwater cleaning device according to claim 6, characterized in that: The closing device (9) comprises a closing motor (91), a worm (92) and a worm wheel (93); the cover body (51) is rotatably connected to the protective chamber (5) via a rotating shaft (94); the rotating shaft (94) is fixedly arranged on the cover body (51); the worm wheel (93) is coaxially fixed to the rotating shaft (94); the closing motor (91) is fixed in the protective chamber (5); the worm (92) is coaxially fixed to the output shaft of the closing motor (91); and the worm (92) is meshed with the worm wheel (93).

8. The underwater cleaning device according to claim 6, characterized in that: A water outlet pipe (62) is fixedly provided on the outer barrel (72), one end of the water outlet pipe (62) is in communication with the interior of the outer barrel (72), and the other end faces away from the cutting device (2).

9. The underwater cleaning device according to claim 1, characterized in that: The cutting device (2) comprises a cylinder (21), a knife net (22), a knife head (23) and a cutting motor (24); the cylinder (21) is fixed at the lower part of the protection bin (5) and connected to the water inlet end of the suction machine (6); the knife net (22) is fixed at one end of the cylinder (21) away from the protection bin (5); the knife head (23) cooperates with the knife net (22) and is located in the cylinder (21); the cutting motor (24) is fixed in the cylinder (21); and the knife head (23) is coaxially fixed to the output shaft of the cutting motor (24).

10. The underwater cleaning device according to claim 9, characterized in that: The knife net (22) adopts a strip-shaped grid.

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