Water surface cleaning device for water conservancy project

Abstract

The invention relates to the technical field of water treatment equipment, and particularly discloses a water conservancy project water surface cleaning device, which comprises a cleaning ship, a pool body, an aeration pipeline, an aeration device and a dosing device, the dosing device comprises a tank body, the tank body is provided with a working chamber, and an extrusion plate is assembled in the working chamber in an up-and-down moving manner; the extrusion plate divides the working chamber into a liquid storage space and an adjusting space, a breather pipe is arranged at the lower end of the tank body, and an adjusting valve is installed on the breather pipe; the pesticide pumping device is mounted on the tank body and is communicated with the liquid storage space; the multiple rotating wheels are installed on the outer wall of the tank body in the circumferential direction of the tank body in a rotating mode, nozzles are formed in the peripheral sides of the rotating wheels, torsional springs are arranged between the rotating wheels and the tank body, and lower shifting rods are arranged on the rotating wheels; and the upper pushing piece is connected with the extrusion plate, and the upper pushing piece is provided with a plurality of upper pushing parts which are distributed up and down. According to the water surface cleaning device for the water conservancy project, liquid medicine can be quickly and uniformly distributed to all positions of the pool body, and the treatment effect is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of water treatment equipment technology, specifically to a water surface cleaning device for water conservancy projects. Background Technology

[0002] With social development and population growth, and influenced by the environment and human activities, a lot of leaves, branches, weeds, and even various kinds of household waste such as plastic bottles and plastic bags are often scattered into the water, making river pollution particularly serious. River pollution not only greatly restricts the growth of aquatic plants and animals, but also significantly weakens the river's self-purification capacity. Algae floating on the water surface and garbage seriously affect the city's image and the sustainable development of the environment.

[0003] Debris on the water surface needs to be removed promptly using surface cleaning devices. These devices typically include a cleaning vessel and wastewater treatment equipment mounted on it. Microbial aeration technology has attracted significant attention due to its high efficiency and environmental friendliness. This method continuously injects air or pure oxygen into the wastewater, providing sufficient dissolved oxygen for aerobic microorganisms. These microorganisms use organic pollutants as a nutrient source to metabolize and multiply, converting them into carbon dioxide, water, and harmless biomass, ultimately enabling the wastewater to meet discharge standards. This technology not only efficiently degrades pollutants and achieves good treatment results, but also realizes a balance between environmental and economic benefits through sludge resource utilization.

[0004] Existing microbial aeration tanks, such as the one disclosed in Chinese patent document CN116750873B for wastewater treatment, utilize varying water levels within the tank to adjust the pressure on the pressure column, thus affecting its position. This position, in turn, alters the position of the pressure ring via a lifting ring and connecting rod. This change in pressure ring position alters the friction between the deceleration block and the metal disc, thereby regulating the rotational speed of the shaft. Adjusting the shaft's speed regulates the power loss of air entering the regulating chamber, thus adjusting the air intake speed and ultimately the air intake volume. This allows the aeration tank to automatically adjust the aeration rate based on the amount of wastewater, preventing excessive dissolved oxygen and ensuring microbial activity. Furthermore, the shaft's rotation, via pulleys and a synchronous belt, drives the rotating column, which in turn rotates the arc-shaped top block, causing the pump plate to reciprocate up and down. This continuously pumps chemicals from the chemical tank into the tank, eliminating the need for manual dosing and significantly reducing labor intensity.

[0005] However, in the existing sewage treatment microbial aeration tanks, during the dosing process, the chemical solution enters the aeration tank through a pump outlet pipe offset to one side of the aeration tank. This easily creates a high concentration zone near the pump outlet pipe, while the diffusion is slow in the far end due to water flow resistance or insufficient aeration disturbance. This results in excessive chemical in some areas and insufficient chemical in others, affecting the treatment effect. Summary of the Invention

[0006] This invention provides a water surface cleaning device for water conservancy projects, which aims to solve the problem of uneven distribution of chemical solution in the microbial aeration tank for sewage treatment in related technologies, which affects the treatment effect.

[0007] The water surface cleaning device for water conservancy projects provided by this invention adopts the following technical solution: A water surface cleaning device for hydraulic engineering includes a cleaning boat, a pool, aeration pipes distributed at the bottom of the pool, and an aeration device installed in the pool and connected to the aeration pipes. The pool also includes multiple dosing devices, each comprising: a tank with a working chamber; a squeezing plate mounted vertically within the working chamber, dividing the working chamber into an upper storage space and a lower adjustment space; a vent pipe at the lower end of the tank connecting the adjustment space and the aeration pipes; and a regulating valve installed on the vent pipe to adjust the air pressure in the adjustment space, controlling the lifting height of the squeezing plate and thus changing the volume of the storage space; and a pump installed on the tank and connected to the storage space. The tank is used to inject liquid medicine so that it sinks to the bottom of the pool under the gravity of the liquid medicine. A rotating wheel, consisting of multiple rotating wheels that rotate circumferentially around the tank, is mounted on the outer wall of the tank. Each rotating wheel has a nozzle on its outer periphery that communicates with the liquid storage space for spraying liquid medicine into the pool. A torsion spring is provided between each rotating wheel and the tank to apply elastic force to the rotating wheel so that the nozzle points downwards. Each rotating wheel has a lower lever. An upper pushing member, connected to the extrusion plate and moving up and down with the extrusion plate, has multiple upper pushing parts distributed vertically. When the extrusion plate rises and presses the liquid medicine from the storage space into the rotating wheel, it drives the upper pushing member to sequentially push the lower lever upwards, causing the rotating wheel to rotate and spray the liquid medicine outwards from the nozzle.

[0008] By employing the above technical solution, multiple floating dosing devices are installed within the tank. Each device utilizes the change in gravity of the liquid medicine within the tank during injection and spraying to achieve its buoyancy within the tank. Furthermore, the existing air pressure of the aeration system drives a pressure plate to push the liquid medicine from the storage space into a rotating wheel. Simultaneously, the pressure plate drives an upward-pushing component to rotate the rotating wheel, and the elastic force of a torsion spring drives the wheel to reset. This causes the nozzles to oscillate between downward and outward directions, allowing the sprayed liquid medicine to cover areas of varying depths and levels in a fan-shaped trajectory. This enables the dosing devices to not only spray liquid medicine in all directions but also cover a wider area through the dynamic displacement of the tank's buoyancy and the periodic oscillation of the nozzles. The movement of the dosing devices further promotes the diffusion of the liquid medicine, ensuring rapid and even distribution throughout the tank. This avoids the problem of excessive medicine in some areas and insufficient medicine in others, significantly improving the treatment effect.

[0009] Furthermore, the tank body is also provided with an air delivery channel that connects to the upper end of the vent pipe, and the end of the air delivery channel away from the vent pipe is connected to the nozzle through an air supply pipe. Each of the rotary wheels has an upper lever on its side away from the lower lever. Each of the dosing devices also includes a lower pusher connected to the extrusion plate to move up and down with the extrusion plate. The lower pusher has a lower push portion. When the extrusion plate moves down under the action of gravity of the liquid medicine, it can drive the lower pusher to push the upper lever down, thereby causing the rotary wheel to rotate and drive the nozzle to spray outward.

[0010] Using the above technical solution, air from the aeration pipe can be introduced into the air delivery tank through the vent pipe, and then sprayed out through the nozzles on the rotor. The air sprayed from multiple nozzles on the outer periphery of the tank can form a ring-shaped water flow that pushes the foam towards the edge of the pool, facilitating observation of subsequent chemical dosing and allowing staff to collect or allow the foam to dissipate naturally. The power for foam removal relies entirely on the original air pressure of the aeration system, eliminating the need for additional blowers or defoamer dosing equipment, thus conforming to the concept of energy conservation and environmental protection. In addition, the downward pushing component allows the nozzles to periodically oscillate when spraying air, enabling the airflow to cover different depths and horizontal areas in a fan-shaped trajectory, which is more effective in breaking up the foam structure than airflow with a fixed path.

[0011] Furthermore, an elastic element is installed within the adjustment space, the elastic element being used to apply an elastic force to the extrusion plate to cause the extrusion plate to move upward and reset.

[0012] Furthermore, the rotating wheel has a first slot located below the central axis of the rotating wheel for accommodating the lower lever, and a first spring for pushing the lower lever to extend outward is installed in the first slot. The upper surface of the extended end of the lower lever is inclined downward from the lower lever towards the upper pushing member. The rotating wheel has a second slot located above the central axis of the rotating wheel on the side opposite to the first slot, which is used to accommodate the upper lever. A second spring is installed in the second slot to push the upper lever outward. The lower surface of the extended end of the upper lever is inclined upward from the upper lever towards the lower pusher.

[0013] With the above technical solution, since the upper surface of the lower lever has an inclined surface and the lower lever can compress the first spring and retract into the first slot, when the extrusion plate drives the upper pushing member to move downward, the upper pushing part can push the inclined surface of the upper surface of the lower lever to pass over the lower lever, ensuring that the upper pushing member can smoothly pass over the lower lever to reset and avoid jamming; since the lower surface of the upper lever has an inclined surface and the upper lever can compress the second spring and retract into the second slot, when the extrusion plate drives the lower pushing member to move upward, the lower pushing part can push the inclined surface of the lower surface of the upper lever to pass over the upper lever, ensuring that the lower pushing member can smoothly pass over the upper lever to reset and avoid jamming.

[0014] Furthermore, the regulating valve includes a valve core rotatably mounted on the upper end of the vent pipe and a motor mounted in the regulating space for driving the valve core to rotate. The valve core has a first opening and a second opening offset circumferentially along the vent pipe. The outer circumferential side of the vent pipe has an air supply opening communicating with the air supply groove. The first opening is used to communicate with the air supply opening. The lower surface of the regulating space has an regulating opening that can be opposite to the second opening.

[0015] Furthermore, the valve core also has sealing positions distributed circumferentially along the vent pipe between the first opening and the second opening.

[0016] Furthermore, the liquid storage space is connected to the nozzle through a liquid delivery pipe, the working chamber is located at the center of the tank, and the tank also has an annular chamber distributed outside the working chamber, which is used to install the air delivery pipe and the liquid delivery pipe.

[0017] Furthermore, the lower part of the annular chamber has multiple gas storage spaces spaced apart along the circumference of the tank body, each gas storage space is connected to the gas delivery channel, and each gas storage space is equipped with a float that can extend out of the tank body and move radially along the tank body.

[0018] By adopting the above technical solution, the float can be pushed outward by air pressure to extend outside the tank, thereby increasing the contact area between the tank and the water surface, effectively preventing the tank from tilting or drifting due to water flow impact, helping to stabilize the tank and ensure stable spray direction.

[0019] Furthermore, a return spring is installed between the float and the air storage space to apply an elastic force to the float so that the float is retracted into the air storage space.

[0020] Furthermore, each of the dosing devices also includes at least two limiting ropes disposed on the outside of the tank body for connecting to the inner wall of the pool body.

[0021] By adopting the above technical solution, the two limiting ropes can effectively balance the force on the tank in the pool, prevent the tank from tilting or shaking during the dosing process, and ensure that the tank will not drift when sinking or floating, maintaining its relative position with the pool.

[0022] The beneficial effects of the water surface cleaning device for hydraulic engineering provided by this invention are as follows: Multiple floating dosing devices are installed within the pool. Each dosing device utilizes the change in gravity of the liquid in the tank during injection and spraying to achieve its floating or sinking within the pool. Furthermore, the existing air pressure of the aeration system drives a squeezing plate to push the liquid in the storage space into a rotating wheel. Simultaneously, the squeezing plate drives an upward pushing component to rotate the rotating wheel, and the elastic force of a torsion spring drives the rotating wheel to reset. This allows the nozzles to oscillate between downward and outward directions, enabling the sprayed liquid to cover different depths and horizontal areas in a fan-shaped trajectory. This allows the dosing device to not only spray liquid in all directions but also cover a wider area through the dynamic displacement of the tank's buoyancy and the periodic oscillation of the nozzles. The movement of the dosing device further promotes the diffusion of the liquid, ensuring rapid and even distribution of the liquid throughout the pool. This avoids the problem of excessive liquid in some areas and insufficient liquid in others, significantly improving the treatment effect. Furthermore, before adding chemicals, air from the aeration pipe can be introduced into the air delivery tank through the vent pipe, and then sprayed out through the nozzles on the rotor. The air sprayed from multiple nozzles on the outer periphery of the tank can form a ring-shaped water flow that pushes the foam towards the edge of the pool, making it easier to observe the subsequent chemical addition and to facilitate the centralized collection or natural dissolution of the foam by staff. The power to clean up the foam relies entirely on the original air pressure of the aeration system, eliminating the need for additional blowers or defoamer dosing equipment, which is in line with the concept of energy conservation and environmental protection. Moreover, the downward pushing component allows the nozzles to periodically oscillate when spraying air, so that the airflow covers different depths and horizontal areas in a fan-shaped trajectory, which is more effective in breaking up the foam structure than airflow with a fixed path. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a structural schematic diagram illustrating the connection relationship between the pool body and the aeration pipes according to the present invention.

[0025] Figure 3 This is a schematic diagram of the chemical dosing device of the water surface cleaning device for water conservancy projects of the present invention.

[0026] Figure 4This is a schematic diagram of the dosing device of the water surface cleaning device for water conservancy projects of the present invention from another perspective.

[0027] Figure 5 This is a schematic diagram of the structure of the impeller of the water surface cleaning device for water conservancy projects according to the present invention.

[0028] Figure 6 This is a schematic diagram of the rotating wheel of the water surface cleaning device for water conservancy projects according to the present invention from another perspective.

[0029] Figure 7 This is a schematic diagram of the structure of the float of the water surface cleaning device for water conservancy projects according to the present invention.

[0030] Figure 8 This is a schematic diagram of the regulating valve of the water surface cleaning device for water conservancy projects according to the present invention.

[0031] Figure label: 1. Cleaning vessel; 10. Pool body; 110. Aeration pipe; 120. Dosing device; 20. Tank body; 210. Working chamber; 211. Liquid storage space; 212. Adjustment space; 220. Gas delivery trough; 230. Elastic element; 240. Annular chamber; 241. First interface; 242. Fourth interface; 243. Fifth interface; 244. Sixth interface; 250. Gas storage space; 251. Float; 252. Return spring; 260. Limiting rope; 30. Squeezing plate; 310. Limiting rod; 3 20. Connecting ring; 40. Vent pipe; 50. Regulating valve; 510. Valve core; 511. First opening; 512. Second opening; 520. Motor; 60. Pump; 610. Water pump; 620. Water pipe; 70. Rotary wheel; 710. Nozzle; 720. Lower lever; 721. First slot; 722. First spring; 730. Upper lever; 740. Second interface; 750. Third interface; 80. Upper pusher; 810. Upper pusher part; 90. Lower pusher; 910. Lower pusher part. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figures 1-8As shown, an embodiment of the water surface cleaning device for water conservancy projects of the present invention is used to treat industrial wastewater, including a cleaning vessel 1, a pool 10, an aeration pipe 110, an aeration device, and a dosing device 120. The system includes a rectangular pool 10 mounted on a cleaning vessel 1, which moves the pool 10 across the water surface. The pool 10 contains wastewater. Aeration pipes 110 are located at the bottom of the pool 10 and are used to introduce air into the pool. Multiple aeration devices are installed inside the pool and connected to the aeration pipes 110. These devices release air from the aeration pipes 110 into the wastewater in the form of bubbles, increasing the dissolved oxygen concentration and promoting the growth and metabolism of aerobic microorganisms. Multiple dosing devices 120 are installed inside the pool and connected to the aeration pipes 110. These devices add flocculants, pH adjusters, nutrients, disinfectants, and other treatment chemicals to the pool 10, ensuring precise and uniform dosing and significantly improving wastewater treatment efficiency.

[0034] like Figures 2 to 5 As shown, each dosing device 120 includes a tank 20, an elastic element 230, a float 251, a limiting rope 260, a squeezing plate 30, a vent pipe 40, a regulating valve 50, a pump 60, and a rotary wheel 70.

[0035] The tank body 20 is generally vertically cylindrical. Inside the tank body 20, there is a working chamber 210 located at the center of the tank body 20, and annular chambers 240 distributed around the outer side of the working chamber 210. The working chamber 210 is vertically cylindrical, and the extrusion plate 30 is mounted vertically within the working chamber 210, dividing it into an upper liquid storage space 211 and a lower adjustment space 212. Multiple limiting rods 310 are fixed on the extrusion plate 30, extending upwards to the outside of the tank body 20 and extending vertically. The limiting rods 310 guide the vertical movement of the extrusion plate 30, ensuring its linear movement and preventing deviation during movement. Sealing rings or flexible packing are installed at the points where the limiting rods 310 protrude from the tank body 20 to prevent leakage of the liquid. Multiple limiting rods 310 are fixedly connected at their ends outside the tank body 20 via connecting rings 320, forming a stable frame structure that further improves the stability and accuracy of the extrusion plate 30 during its up-and-down movement. The annular chamber 240 is used to install the gas delivery pipe, gas transmission pipe, and liquid delivery pipe.

[0036] The elastic element 230 is a spring, installed within the adjustment space 212. The elastic element 230 is used to apply an elastic force to the extrusion plate 30, so that the extrusion plate 30 moves upward and returns to its original position.

[0037] The medicine pump 60 is installed at the upper end of the tank 20 and includes a water pipe 620 for conveying the medicine solution and a water pump 610 for drawing the medicine solution from an external medicine solution source and conveying it through the water pipe 620 to the storage space 211 of the tank 20. Under normal conditions, the storage space 211 is not filled with medicine solution, and the tank 20 floats on the water surface due to buoyancy. When medicine needs to be added, the water pump 610 is started, and after injecting the medicine solution into the storage space 211 through the water pipe 620, the tank 20 can sink to the bottom of the pool 10 under the gravity of the medicine solution.

[0038] Two limiting ropes 260 are symmetrically installed on the outside of the tank 20 to connect to the inner wall of the pool 10. The two limiting ropes 260 effectively balance the forces acting on the tank 20 within the pool 10, preventing the tank 20 from tilting or swaying during dosing and ensuring that the tank 20 does not drift during buoyancy, maintaining its relative position to the pool 10. The limiting ropes 260 have sufficient elasticity or flexibility to accommodate the buoyancy of the tank 20.

[0039] Multiple rotating wheels 70 are circumferentially mounted on the outer wall of the tank 20. Each rotating wheel 70 is horizontally cylindrical and rotates around its own axis while mounted on the outer wall of the tank 20. Each rotating wheel 70 has a second interface 740 for receiving liquid medicine, a third interface 750 for receiving air, and a nozzle 710 communicating with the second and third interfaces 740 and for spraying liquid medicine or air into the tank 10. A first interface 241 is provided on the side wall between the annular chamber 240 and the liquid storage space 211, and a liquid delivery pipe is connected between the first interface 241 and the second interface 740. A torsion spring is provided between each rotating wheel 70 and the tank 20, and the torsion spring applies an elastic force to the rotating wheel 70 to keep the nozzle 710 pointing downwards.

[0040] like Figure 5 and Figure 6 As shown, one end face of each rotary wheel 70 has a first slot 721 located below the central axis of the rotary wheel 70 to accommodate a lower lever 720, and a first spring 722 for pushing the lower lever 720 outward is installed in the first slot 721. The upper surface of the extended end of the lower lever 720 is inclined downward from the inside out. The other end face of each rotary wheel 70 has a second slot located above the central axis of the rotary wheel 70 to accommodate an upper lever 730, and a second spring for pushing the upper lever 730 outward is installed in the second slot. The lower surface of the extended end of the upper lever 730 is inclined upward from the inside out.

[0041] like Figures 3 to 6 As shown, the lower surface of the connecting ring 320 is fixed with multiple sets of pushing members that move up and down with the extrusion plate 30 along the circumference of the connecting ring 320. Each set of pushing members is distributed on the outside of the tank body 20 corresponding to the rotating wheel 70, and includes an upper pushing member 80 opposite to the lower lever 720 and a lower pushing member 90 opposite to the upper lever 730.

[0042] The upper pusher 80 has multiple upper push portions 810 distributed vertically. These upper push portions 810 are used to sequentially push the lower lever 720 upwards when the extrusion plate 30 moves upwards, causing the rotating wheel 70 to rotate and drive the nozzle 710 to spray outwards. A reset gap exists between adjacent upper push portions 810, allowing the rotating wheel 70 to rotate in the opposite direction and reset under the action of a torsion spring. Because the upper surface of the lower lever 720 has an inclined surface, and the lower lever 720 can compress the first spring 722 and retract it into the first slot 721, when the extrusion plate 30 drives the upper pusher 80 downwards, the upper push portions 810 can push the inclined surface of the upper surface of the lower lever 720 to pass over the lower lever 720, ensuring that the upper pusher 80 can smoothly pass over the lower lever 720 and reset, avoiding jamming.

[0043] The lower pusher 90 has a lower push portion 910, which is located below a plurality of upper push portions 810. The lower push portion 910 is used to push the upper lever 730 downward when the extrusion plate 30 moves downward, thereby causing the rotary wheel 70 to rotate and drive the nozzle 710 to spray outward. Since the lower surface of the upper lever 730 has a slope and the upper lever 730 can compress the second spring to retract into the second slot, when the extrusion plate 30 drives the lower pusher 90 to move upward, the lower push portion 910 can push the slope of the lower surface of the upper lever 730 to pass over the upper lever 730, ensuring that the lower pusher 90 can smoothly pass over the upper lever 730 to reset and avoid jamming.

[0044] like Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, the vent pipe 40 is fixed to the lower end of the tank 20 and is used to connect to the aeration pipe 110 to introduce air into the tank 20. The lower surface of the adjustment space 212 has an adjustment opening that can communicate with the vent pipe 40.

[0045] The tank body 20 also has multiple gas delivery slots 220 located below the adjustment space 212 and the annular chamber 240. Each gas delivery slot 220 corresponds to a rotor 70. The outer periphery of the vent pipe 40 has a gas delivery opening that communicates with each gas delivery slot 220. The end of each gas delivery slot 220 facing away from the vent pipe 40 is connected to the rotor 70 through a gas supply pipe. The side wall between the annular chamber 240 and the gas delivery slots 220 has a fourth interface 242 and a sixth interface 244, and the gas supply pipe is connected between the fourth interface 242 and the third interface 750.

[0046] A regulating valve 50 is installed on the vent pipe 40 and is used to regulate gas flow. The regulating valve 50 includes a valve core 510 rotatably mounted on the upper end of the vent pipe 40 and a motor 520 installed in the regulating space 212 to drive the valve core 510 to rotate. The valve core 510 has a first opening 511, a blocking position, and a second opening 512 sequentially distributed along the circumference of the vent pipe 40. The first opening 511 is used to connect to the gas supply opening, the blocking position is used to close the vent pipe 40, and the second opening 512 is used to connect to the regulating opening.

[0047] like Figure 3 , Figure 4 and Figure 7 As shown, the lower part of the annular chamber 240 has multiple air storage spaces 250 spaced circumferentially along the tank body 20. A fifth interface 243 is provided on the side wall between the annular chamber 240 and the air storage spaces 250, and an air supply pipe connects between the fifth interface 243 and the sixth interface 244. Each air storage space 250 is equipped with a float 251 that can extend outside the tank body 20 and moves radially along the tank body 20. The float 251 is made of buoyancy materials such as foam plastic. A return spring 252 is installed between the float 251 and the air storage space 250 to apply an elastic force to the float 251, causing it to retract back into the air storage space 250. The float 251 can be pushed outward by air pressure to extend outside the tank body 20, increasing the contact area between the tank body 20 and the water surface, effectively preventing the tank body 20 from tilting or drifting due to water flow impact, assisting in stabilizing the tank body 20, and ensuring a stable spray direction.

[0048] The working process of an embodiment of the water surface cleaning device for water conservancy projects of the present invention includes the following steps: In the first step, under normal conditions, the storage space 211 is not filled with medicine, and the tank 20 floats on the water surface under the action of buoyancy.

[0049] The second step involves blowing away the foam. When medication needs to be added, the motor 520 drives the valve core 510 to rotate until the first opening 511 connects with the air supply opening. Air from the aeration pipe 110 is introduced into the air supply trough 220 through the air pipe 40, and then into the air storage space 250 and the rotating wheel 70. The air pressure in the air storage space 250 pushes the float 251 outward to the outside of the tank 20. Air flowing to the rotating wheel 70 is sprayed into the tank 10 through the nozzle 710 to push away the foam around the tank 20, making it easier to observe the subsequent medication addition and to facilitate the staff to collect or allow the foam to dissipate naturally. At the same time, the pump 60 injects small amounts of medication into the liquid storage space 211 multiple times. Each time a small amount of medicine is injected, the extrusion plate 30 moves down a suitable distance under the gravity of the medicine, which drives the lower pusher 90 to push the upper lever 730 downward, causing the rotating wheel 70 to rotate and drive the nozzle 710 to spray outward. Since the injected medicine is small, the elastic force of the elastic element 230 can drive the extrusion plate 30 to move upward and reset, and squeeze a small amount of medicine into the rotating wheel 70, so that it is sprayed outward along with a large amount of gas. At the same time, the nozzle 710 can reset to face downward under the action of the torsion spring. This is repeated many times, so that the nozzle 710 periodically swings and sprays a large amount of gas and a small amount of medicine until the foam in the dosing area covered by the tank 20 is cleaned up.

[0050] The third step involves injecting the medicine and allowing it to sink. The motor 520 drives the valve core 510 to rotate to the sealing position, closing the vent pipe 40. The pump 60 continuously injects the medicine into the storage space 211, and the tank 20 sinks to the bottom of the pool 10 under the gravity of the medicine, overcoming buoyancy.

[0051] The fourth step involves spraying and floating. The motor 520 drives the valve core 510 to rotate until the second opening 512 connects with the regulating opening. Air from the aeration pipe 110 is introduced into the regulating space 212 through the air pipe 40 to increase the air pressure in the regulating space 212, thereby controlling the extrusion plate 30 to rise. This reduces the volume of the storage space 211, squeezing the liquid in the storage space 211 into the rotating wheel 70. The liquid entering the rotating wheel 70 is sprayed out into the tank 10 through the nozzle 710. The weight of the liquid in the tank 20 decreases, allowing it to float to the surface under buoyancy. At the same time, the extrusion plate 30 drives the upper pusher 80 to move upward, causing the upper pusher 810 to sequentially push the lower lever 720 upward, thereby causing the rotating wheel 70 to rotate and drive the nozzle 710 to spray outward. Simultaneously, the nozzle 710 can return to its downward position under the action of the torsion spring, allowing the nozzle 710 to periodically oscillate and spray the liquid.

[0052] Thus, in the embodiment of the water surface cleaning device for water conservancy projects of the present invention, multiple floating dosing devices 120 are set in the pool body 10. Each dosing device 120 floats or sinks in the pool body 10 by utilizing the change in gravity of the liquid in the tank 20 during the injection and spraying process. The original air pressure of the aeration system is used to drive the extrusion plate 30 to push the liquid in the storage space 211 into the rotating wheel 70. At the same time, the extrusion plate 30 drives the upper pusher 80 to rotate the rotating wheel 70 and the elastic force of the torsion spring drives the rotating wheel 70 to reset, so that the nozzle 710 oscillates between downward and outward, so that the liquid sprayed from the nozzle 710 covers different depths and horizontal areas in a fan-shaped trajectory. This design allows the dosing device 120 to not only spray the chemical solution in all directions, but also to cover a wider area through the dynamic displacement of the tank 20's upward movement and the periodic oscillation of the nozzles 710. Simultaneously, the movement of the dosing device 120 promotes further diffusion of the chemical solution, ensuring rapid and even distribution to all parts of the tank 10. This avoids the problem of excessive dosage in some areas and insufficient dosage in others, significantly improving the treatment effect. Furthermore, before dosing, air from the aeration pipe 110 can be introduced into the air delivery trough 220 through the vent pipe 40, and then sprayed out through the nozzles 710 on the rotor 70. The air sprayed from the multiple nozzles 710 on the outer periphery of the tank 20 forms a ring-shaped water flow that pushes the foam towards the edge of the tank, facilitating observation of subsequent dosing and allowing staff to collect or allow the foam to dissipate naturally. The power for foam removal relies entirely on the existing air pressure of the aeration system, eliminating the need for additional blowers or defoamer dosing equipment, thus conforming to energy-saving and environmental protection principles. Moreover, the downward pusher 90 allows the nozzle 710 to oscillate periodically when ejecting air, enabling the airflow to cover different depths and horizontal areas in a fan-shaped trajectory, which breaks up the foam structure more effectively than airflow with a fixed path.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A water surface cleaning device for a hydraulic engineering project, comprising a cleaning vessel, a pool body, aeration pipes distributed at the bottom of the pool body, and an aeration device installed in the pool body and connected to the aeration pipes, characterized in that, The tank is also equipped with multiple dosing devices, each including: a tank body with a working chamber. A pressure plate is mounted vertically within the working chamber, dividing the chamber into an upper storage space and a lower adjustment space. A vent pipe connecting the adjustment space and an aeration pipe is located at the lower end of the tank body. A regulating valve is installed on the vent pipe to change the air pressure in the adjustment space, controlling the height of the pressure plate and thus altering the volume of the storage space. A pump is mounted on the tank body and connected to the storage space, used to inject the chemical solution, causing the tank to float under the weight of the solution. The liquid sinks to the bottom of the tank; multiple rotating wheels are installed on the outer wall of the tank and rotate around the tank. Each rotating wheel has a nozzle on its outer circumference that communicates with the liquid storage space for spraying the liquid into the tank. Each rotating wheel is provided with a torsion spring between itself and the tank to apply an elastic force to the rotating wheel so that the nozzle points downward. Each rotating wheel is provided with a lower lever; an upper pusher is connected to the extrusion plate to move up and down with the extrusion plate. The upper pusher has multiple upper push parts distributed vertically. When the extrusion plate rises and presses the liquid storage space into the rotating wheel, it can drive the upper pusher to push the lower lever upward in sequence, so that the rotating wheel rotates and drives the nozzle to spray outward.

2. The water surface cleaning device for water conservancy projects according to claim 1, characterized in that, The tank body is also provided with an air delivery channel that connects to the upper end of the vent pipe. The end of the air delivery channel away from the vent pipe is connected to the nozzle through an air supply pipe. Each of the rotary wheels has an upper lever on its side away from the lower lever. Each of the dosing devices also includes a lower pusher connected to the extrusion plate to move up and down with the extrusion plate. The lower pusher has a lower push portion. When the extrusion plate moves down under the action of gravity of the liquid medicine, it can drive the lower pusher to push the upper lever down, thereby causing the rotary wheel to rotate and drive the nozzle to spray outward.

3. The water surface cleaning device for water conservancy projects according to claim 2, characterized in that, An elastic element is installed within the adjustment space. The elastic element is used to apply an elastic force to the extrusion plate so that the extrusion plate moves upward and resets.

4. A water surface cleaning device for water conservancy projects according to claim 2, characterized in that, The rotating wheel has a first slot located below the central axis of the rotating wheel to accommodate the lower lever, and a first spring for pushing the lower lever to extend outward is installed in the first slot. The upper surface of the extended end of the lower lever is inclined downward from the lower lever towards the upper pushing member. The rotating wheel has a second slot located above the central axis of the rotating wheel on the side opposite to the first slot, which is used to accommodate the upper lever. A second spring is installed in the second slot to push the upper lever outward. The lower surface of the extended end of the upper lever is inclined upward from the upper lever towards the lower pusher.

5. A water surface cleaning device for water conservancy projects according to claim 2, characterized in that, The regulating valve includes a valve core rotatably mounted on the upper end of the vent pipe and a motor mounted in the regulating space for driving the valve core to rotate. The valve core has a first opening and a second opening offset circumferentially along the vent pipe. The outer circumference of the vent pipe has an air supply opening communicating with the air supply groove. The first opening is used to communicate with the air supply opening. The lower surface of the regulating space has an regulating opening that is opposite to the second opening.

6. A water surface cleaning device for water conservancy projects according to claim 5, characterized in that, The valve core also has sealing positions distributed circumferentially along the vent pipe between the first opening and the second opening.

7. A water surface cleaning device for water conservancy projects according to claim 2, characterized in that, The liquid storage space is connected to the nozzle through a liquid delivery pipe. The working chamber is located at the center of the tank. The tank also has an annular chamber distributed outside the working chamber. The annular chamber is used to install the air delivery pipe and the liquid delivery pipe.

8. A water surface cleaning device for water conservancy projects according to claim 7, characterized in that, The lower part of the annular chamber has multiple gas storage spaces spaced apart along the circumference of the tank body. Each gas storage space is connected to the gas delivery channel. Each gas storage space is equipped with a float that can extend out of the tank body and move radially along the tank body.

9. A water surface cleaning device for water conservancy projects according to claim 8, characterized in that, A return spring is installed between the float and the gas storage space to apply an elastic force to the float so that the float is retracted into the gas storage space.

10. A water surface cleaning device for water conservancy projects according to any one of claims 1 to 9, characterized in that, Each of the dosing devices also includes at least two limiting ropes disposed on the outside of the tank body for connecting to the inner wall of the pool body.

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