An underwater cleaning method and apparatus based on adsorption principles

Abstract

The application provides an underwater cleaning method and device based on adsorption principle. The device comprises a shell, a driving assembly, and a water flow channel formed inside the shell. The water flow channel is an axial flow channel connected in sequence along the same axis. The water flow channel comprises a water inlet end, a filter assembly, a driving assembly, and a water outlet end. The water inlet end is used for sucking in water flow and dirt to be cleaned. The filter assembly is arranged downstream of the water inlet end along the water flow direction to separate the water source and the dirt and contain the dirt. The driving assembly is connected downstream of the filter assembly to provide suction force for driving the water source and the dirt to flow along the axial flow channel. The water outlet end is connected downstream of the driving assembly and located at the tail of the shell to discharge the separated water source flowing out of the driving assembly. The water inlet end, the filter assembly, the driving assembly, and the water outlet end are coaxially arranged along the water flow direction to form a continuous linear flow channel. The above structure improves the cleaning efficiency.

Description

Technical Field

[0001] This application relates to the field of underwater cleaning equipment, and more particularly to an underwater cleaning method and apparatus based on the principle of adsorption. Background Technology

[0002] With the increasing demand for underwater cleaning, such as cleaning the bottom of swimming pools, reservoirs, and docks, floor cleaning robots have been widely used. These devices typically operate on the principle of negative pressure adsorption, using a drive component to generate suction that draws water containing dirt into the device, where it is filtered and separated before being discharged as clean water.

[0003] Currently, in common floor cleaning robot designs, the water outlet is located on the side wall of the chamber used for temporary dirt storage. In this structure, water and dirt are sucked in through the inlet, undergo initial solid-liquid separation within the adsorption chamber, and then the clean water is discharged directly from the outlet located on the side wall of the chamber. While this "mid-stream drainage" design is simple, it causes the negative pressure within the adsorption chamber to be released prematurely, making it difficult to form a stable and continuous pressure gradient. As a result, the water flow's pushing force against the dirt is insufficient, and some dirt, especially lighter particles, easily tumbles and suspends within the adsorption chamber, failing to be effectively trapped and collected, leading to incomplete cleaning and reduced filtration efficiency. Simultaneously, unstable internal pressure may increase the load on the drive components, causing some water to remain in the chamber, potentially leading to water leakage when disassembling the cleaning chamber.

[0004] Therefore, there is a need for an underwater cleaning method and device based on the principle of adsorption to improve cleaning efficiency. Summary of the Invention

[0005] In view of this, it is necessary to provide an underwater cleaning method and apparatus based on the principle of adsorption to improve cleaning efficiency and solve the above problems.

[0006] An embodiment of this application provides an underwater cleaning device based on the principle of adsorption, including a housing, a drive assembly, and a water flow channel formed inside the housing, characterized in that... The water flow channel is an axial flow channel that is sequentially connected along the same axis, and includes: The water inlet is used to draw in the water and dirt to be cleaned. A filter assembly is located downstream of the water inlet along the water flow direction to separate the water source from the dirt and to contain the dirt. A drive assembly, connected downstream of the filter assembly, is used to provide a suction force that drives water and dirt to flow along the axial flow channel. The water outlet is connected downstream of the drive assembly and located at the tail of the housing, and is used to discharge the separated water that flows out of the drive assembly. In at least one embodiment of this application, In at least one embodiment of this application, the first filter includes: The fitting part is fitted and connected to the water inlet end; The filter part is circumferentially connected to the bonding part, and the bonding part wraps around the filter part; A connecting portion is connected to both the fitting portion and the receiving filter element to form a flip-top fixing position. The filter assembly includes: The first filter element is fitted and connected to the water inlet end and has a flip-top structure; The filter element is connected to the first filter element to form a cavity for retaining dirt. The first filter element is located at the connection between the water inlet end and the filter receiving element to separate the water inlet end and the filter receiving element, and the first filter element is located at the end closer to the filter receiving element; The second filter element is located between the drive assembly and the filter housing element to form a gap through which the separated water flows to the drive assembly.

[0007] In at least one embodiment of this application, the bonding portion is made of rubber and has friction.

[0008] In at least one embodiment of this application, the driving component includes: A waterproof cover is fixedly connected to the housing. The motor generates suction force, and the waterproof cover covers the motor to seal it. A centrifugal pump, the impeller of which is driven to rotate by the motor to generate the suction force.

[0009] In at least one embodiment of this application, the axial inlet of the centrifugal pump is inserted into and coaxially sealed with the outlet side of the second filter element, so that the water filtered by the second filter element can smoothly enter the center of the centrifugal pump impeller along the axial direction.

[0010] In at least one embodiment of this application, a radial outlet is formed between the centrifugal pump and the housing, and the radial outlet is connected to the outlet end.

[0011] In at least one embodiment of this application, the second filter element is integrally formed with the housing.

[0012] An underwater cleaning method based on the principle of adsorption, using any one of the underwater cleaning devices described above, the method comprising the following steps: When the drive assembly is activated, a stable axial suction force is generated from the inlet end to the outlet end within a straight water flow channel coaxially formed by the inlet end, the filter assembly, the drive assembly, and the outlet end, causing the inlet end of the device to extend into the cleaning area. Under the action of the axial suction force, the water to be cleaned and the dirt enter the water flow channel through the water inlet and flow axially towards the drive component. The impact force of the water flow and the dirt acts on the first filter element of the filter assembly. After passing through the first filter element, the dirt enters and is retained in the downstream receiving filter element, thereby achieving the separation of dirt from the water source. After being separated, the water flows through the gaps in the filter element and continues to flow axially through the second filter element before entering the drive assembly. The water flowing into the drive component is discharged directionally from the outlet located at the tail of the device under the action of the drive component.

[0013] In at least one embodiment of this application, the first filter is configured as follows: When the drive component is working, the water flow and dirt impact the first filter element through suction, opening the channel to enter the filter screen element; When the drive assembly stops working or reverse water flow is generated, the first filter element impacts the water flow direction away from the drive assembly to close the filter screen, preventing the dirt trapped inside the filter screen from flowing back to the inlet end.

[0014] The aforementioned underwater cleaning method and device based on the adsorption principle utilizes an axially continuous straight flow channel, with the outlet located at the tail of the drive assembly and all components kept coaxial, forming a continuous pipeline without bends or lateral pressure relief ports. When the drive assembly starts, a stable, unidirectional pressure difference is established within the pipeline, creating a suction force from the high-pressure inlet to the low-pressure outlet. This suction force acts like a continuous straw, powerfully and continuously drawing water and dirt from the inlet, propelling them along a straight path through the filter assembly for separation, and finally discharging the separated water from the outlet at the very end. This improves cleaning efficiency. Attached Figure Description

[0015] Figure 1 This is a perspective view of an underwater cleaning device based on the adsorption principle described in this application; Figure 2 This is a top view of the underwater cleaning device based on the adsorption principle described in this application; Figure 3 This is an exploded view of the underwater cleaning device based on the adsorption principle described in this application; Figure 4 for Figure 2 A cross-sectional view of AA and a schematic diagram of the water flow direction when the drive component is working; Figure 5 for Figure 4 A magnified view of a section at point B in the middle; Figure 6 for Figure 4A magnified view of a section at point C; Figure 7 This is an exploded view of the first filter element and the filter screen receiving element described in this application; Figure 8 This is a schematic diagram of the process of the underwater cleaning method based on the adsorption principle described in this application; Explanation of main component symbols 100. Underwater cleaning device based on adsorption principle; 10. Housing; 20. Drive assembly; 30. Water flow channel; 31. Water inlet; 32. Filter assembly; 33. Water outlet; 321. First filter element; 322. Filter screen receiving element; 323. Receiving cavity; 324. Second filter element; 3211. Adhesive part; 3212. Filter screen part; 3213. Connecting part; 21. Waterproof cover; 22. Motor; 23. Centrifugal pump; 231. Impeller; 232. Axial water inlet; 233. Radial water outlet; 200. Underwater cleaning method based on adsorption principle. Detailed Implementation

[0016] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0017] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0018] This application provides an underwater cleaning device based on the adsorption principle, including a housing, a drive assembly, and a water flow channel formed inside the housing. The water flow channel is an axial flow channel connected sequentially along the same axis. The water flow channel includes an inlet end, a filter assembly, a drive assembly, and an outlet end. The inlet end is used to draw in the water to be cleaned and dirt. The filter assembly is located downstream of the inlet end along the water flow direction to separate the water source and dirt and to contain the dirt. The drive assembly is connected downstream of the filter assembly and is used to provide suction force to drive the water source and dirt along the axial flow channel. The outlet end is connected downstream of the drive assembly and located at the tail of the housing, and is used to discharge the separated water source flowing out through the drive assembly. The inlet end, filter assembly, drive assembly, and outlet end are coaxially arranged along the water flow direction, forming a continuous straight flow channel.

[0019] The aforementioned underwater cleaning method and device based on the adsorption principle utilizes an axially continuous straight flow channel, with the outlet located at the tail of the drive assembly and all components kept coaxial, forming a continuous pipeline without bends or lateral pressure relief ports. When the drive assembly starts, a stable, unidirectional pressure difference is established within the pipeline, creating a suction force from the high-pressure inlet to the low-pressure outlet. This suction force acts like a continuous straw, powerfully and continuously drawing water and dirt from the inlet, propelling them along a straight path through the filter assembly for separation, and finally discharging the separated water from the outlet at the very end. This improves cleaning efficiency.

[0020] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0021] Please see Figures 1-7 The first embodiment of this application provides an underwater cleaning device 100 based on the principle of adsorption.

[0022] In this embodiment, the underwater cleaning device 100 based on the adsorption principle includes a housing 10, a drive assembly 20, and a water flow channel 30 formed inside the housing 10. The water flow channel 30 is an axial flow channel that is sequentially connected along the same axis, ensuring stable water flow and efficient cleaning performance of the device.

[0023] The inlet end 31 is the entrance portion of the water flow into the device, located at the front end of the housing 10. Its function is to draw in the water and dirt to be cleaned. The inlet end 31 is connected to the axial flow channel inside the housing 10, ensuring that the water and dirt smoothly enter the device and are guided to the subsequent filter assembly 32. The design of the inlet end 31 ensures smooth water intake, initiating the initial treatment of the water flow.

[0024] The filter assembly 32 is located downstream of the water inlet 31 and is coaxially arranged with it, serving to separate water and dirt. The filter assembly 32, through its designed filter screen structure, directly separates dirt from the water flow. It should be noted that the effective separation of dirt from the water flow by the filter assembly 32 structure ensures that the filtered water can continue to flow to the drive assembly 20. It effectively isolates and retains dirt in the receiving cavity 323 without affecting the normal flow of water.

[0025] The drive assembly 20, located downstream of the filter assembly 32, provides the suction force to drive water and dirt along the axial flow channel. The drive assembly 20, through the coordinated operation of the motor 22 and the centrifugal pump 23, generates a strong suction, allowing water and dirt to continue flowing along the water flow channel 30 after passing through the filter assembly 32. The function of the drive assembly 20 is to ensure that the separation of water and dirt is not disturbed, while simultaneously promoting the smooth flow of the separated water for final discharge. This structure significantly improves cleaning efficiency while maintaining a stable load on the drive assembly 20.

[0026] The outlet end 33 is located at the tail of the housing 10 and connected downstream of the drive assembly 20. It is used to discharge the separated water that has passed through the drive assembly 20. The function of the outlet end 33 is to ensure that the cleaned water flows out smoothly and avoids blockages or obstructions. The location of the outlet end 33 at the tail of the device optimizes the water flow path and improves the overall efficiency of the system.

[0027] It should be noted that a continuous axial flow channel with a single rod running through the entire length of the device is constructed. Specifically, the water outlet 33 is positioned on the tail housing 10 of the drive assembly 20, so that the water inlet 31, the filter assembly 32, the drive assembly 20, and the water outlet 33 are coaxially connected sequentially along the same axis, forming a continuous straight working flow channel without bends or lateral branching ports.

[0028] When the drive assembly 20 is activated, a stable axial suction force is generated within the flow channel, pointing from the inlet end 31 to the outlet end 33. The water and dirt to be cleaned are drawn in from the inlet end 31 and forced to flow in a straight line. The water and dirt first impact and pass through the first filter element 321, which has an anti-backflow function; large particles of dirt are trapped and sent to the downstream receiving cavity 323 for retention. Subsequently, the water continues to flow through the receiving cavity 323, through the second filter element 324 located between it and the drive assembly 20, and finally enters the drive assembly 20. All water must flow through the drive assembly 20 before being discharged from the outlet end 33 at the very end of the device.

[0029] Because the outlet 33 is located at the very end of the flow channel, the negative pressure generated by the drive component 20 cannot be released midway through the flow channel. This establishes a continuous, stable, and progressively stronger pressure gradient throughout the entire flow channel, from the inlet 31 to the outlet 33. This pressure gradient ensures that the suction force can act on the dirt adsorption and transport process without loss throughout, solving the core problem of premature leakage of negative pressure in the adsorption chamber and sudden drop in suction force caused by the lateral outlet in traditional structures.

[0030] The continuous axial suction force acts like an invisible propeller and stabilizer. It not only powerfully draws dirt into the receiving cavity 323, but also continues to provide pressure pointing deep into the flow channel after the dirt enters, compacting and stabilizing the dirt in the cavity. This effectively avoids the suspension, tumbling, and escape of dirt caused by interruption of suction or turbulent water flow, thereby greatly improving the thoroughness of cleaning and collection efficiency.

[0031] The direction of water flow, the direction of dirt movement, and the direction of system pressure gradient are all completely consistent, all pointing axially towards the tail of the shell 10. This directional coordination eliminates the eddies, turbulence, and secondary scouring interference to already collected dirt caused by abrupt changes in water flow direction, such as when water is turned and discharged from a side outlet, which are common in traditional structures. The fluid flow within the system is smoother and more orderly, fundamentally preventing secondary airborne debris.

[0032] The drive assembly 20 is located downstream of the second filter element 324, and only requires suction at the end of the flow channel to maintain the efficient operation of the entire system. This design greatly reduces the workload and energy consumption of the drive assembly 20, while also reducing the risk of wear and failure caused by direct impact of dirt on the pump body. As a result, the overall device operates more quietly and energy-efficiently, and the service life of the drive assembly 20 is extended.

[0033] In practical applications, the entire system smoothly guides water flow to the inlet 31 via an axial flow channel. After the filter assembly 32 separates the dirt, the water and dirt continue to flow to the drive assembly 20, and finally the cleaned water is discharged through the outlet 33. The advantage of this structure is that, through stable suction and a high-efficiency filtration system, it can meet the cleaning needs of different water quality environments, ensuring optimal cleaning results.

[0034] This device can be widely used for cleaning the bottom of swimming pools, reservoirs, docks, and other bodies of water. It is also suitable for other underwater cleaning needs, such as water treatment facilities or water source cleaning equipment. Through continuous suction and dirt separation, the cleaning process is stable and effective, while avoiding water leakage and energy waste, providing an efficient and economical solution for cleaning tasks.

[0035] In this embodiment, the filter assembly 32 includes a first filter element 321, a filter screen receiving element 322, and a second filter element 324.

[0036] The first filter element 321 is located downstream of the water inlet 31 and is fitted and connected to the water inlet 31. Its function is to work together with the water inlet 31 to ensure that water flows smoothly into the subsequent filtration system. The main function of the first filter element 321 is to provide initial isolation for dirt in the water flow. Its design ensures that larger particles and impurities are isolated after passing through the filter element and enter the filter screen 322.

[0037] The flip-top design of the first filter element 321 allows it to open or close during operation. When the drive assembly 20 is working, water flows in through the inlet 31. With the action of the water flow and suction, the flip-top of the first filter element 321 opens, allowing dirt to pass through and enter the filter housing 322. When the drive assembly 20 stops working or reverses the water flow, the first filter element 321 automatically closes the flip-top according to the change in water flow direction, preventing dirt in the filter housing 322 from flowing back into the inlet 31. Through this design, the first filter element 321 not only effectively separates the inlet 31 from the filter housing 322, but also prevents backflow of dirt when the drive assembly 20 stops working, keeping the equipment clean.

[0038] The flip cover body is the main movable part of the first filter element 321, and its shape is designed to withstand the impact of water flow and open. This flip cover is typically made of a material with a certain degree of flexibility and durability, such as rubber or elastic plastic, to ensure that it can open flexibly under the action of water flow. The flip cover body consists of the fitting part 3211 and the filter part 3212 described above.

[0039] The flip cover body and the fixed part of the first filter element 321 are connected by a hinge structure, which allows the flip cover body to rotate and open under the impact of water flow. The hinge is usually located at the upper end or side of the flip cover body, so that the flip cover body can rotate freely about the hinge axis.

[0040] The flip cover fixing position is the position where the flip cover structure is fixed in the working state to ensure that the flip cover can be opened or closed stably and to prevent the position from shifting due to disturbances caused by water flow or reverse water flow during operation.

[0041] The fixing position can be achieved by a spring, a snap-fit, or other elastic structure. When water flows into the flip cover body, the fixing position keeps the flip cover in the open state, allowing dirt to enter the filter screen 322. Once the water flow direction changes in the opposite direction or the drive component 20 stops working, the fixing position causes the flip cover structure to close automatically through the reverse impact force, preventing dirt from flowing back into the water inlet 31.

[0042] The filter element 322 is connected to the first filter element 321, and its outer surface is covered with a filter screen, forming a receiving cavity 323 specifically designed to contain and retain dirt separated by the first filter element 321. When water flows into the filter element 322, dirt particles are retained in the receiving cavity 323, ensuring that this dirt does not enter the subsequent drive assembly 20 or affect the stable flow of water. The design of the filter element 322 effectively isolates dirt, ensuring smooth water flow into the downstream drive assembly 20.

[0043] The second filter element 324 is located between the drive assembly 20 and the filter screen housing 322. Its function is to guide the separated water source to the drive assembly 20, ensuring that the direction of the water flow does not deviate and maintaining a stable flow path. The second filter element 324 itself does not perform the function of filtering the water source, but rather acts as a water flow guiding component to ensure that the water flow can smoothly enter the drive assembly 20, thereby not affecting the subsequent water flow treatment and the normal operation of the drive assembly 20.

[0044] In one specific embodiment, the first filter element 321 is designed to consist of three main parts: a fitting part 3211, a filter screen part 3212, and a connecting part 3213. The fitting part 3211 is located downstream of the water inlet end 31 and is fitted and connected to the water inlet end 31. Its function is to ensure that the first filter element 321 can be tightly connected to the water inlet end 31, maintaining smooth water flow into the filtration system. The fitting part 3211, through friction and sealing, ensures that no leakage occurs when water flows in, increasing filtration efficiency. This design can effectively guide the water flow to the filter screen part 3212, preventing water flow deviation.

[0045] The filter screen portion 3212 is circumferentially connected to the fitting portion 3211, and the fitting portion 3211 covers the filter screen portion 3212. The filter screen portion 3212 separates the water inlet end 31 and the filter screen receiving element 322 from the first filter element 321. The filter screen portion 3212 and the filter screen receiving element 322 retain dirt in the filter screen receiving element 322.

[0046] The connecting part 3213 connects the fitting part 3211 to the filter receiving element 322, forming a flip-top fixing position. The function of the connecting part 3213 is to securely connect the first filter element 321 to the filter receiving element 322, and, based on the flip-top structure, ensure that the first filter element 321 can open or close during operation. Specifically, the connecting part 3213 is designed to ensure that the flip-top can be stably opened or closed under the action of water flow and suction. When the drive assembly 20 is working, water flow and dirt impact the first filter element 321 through suction, opening the channel into the filter receiving element 322. When the drive assembly 20 stops working or reverse water flow is generated, the first filter element 321 will automatically close the flip-top according to the water flow direction to prevent dirt from flowing back to the water inlet end 31.

[0047] The fitting part 3211 is made of rubber and has a certain degree of friction. The function of the fitting part 3211 is to tightly fit with the water inlet end 31, providing a seal through the elasticity and friction of the rubber to prevent water leakage when it enters the device through the water inlet end 31. The softness of the rubber allows the fitting part 3211 to maintain good sealing performance under the impact of water flow, while its friction enhances the contact surface with the water inlet end 31, ensuring that water can smoothly enter the filtration system and avoiding problems such as water leakage or water flow deviating from the filtration path.

[0048] In this embodiment, the drive assembly 20 includes a waterproof cover 21, a motor 22, and a centrifugal pump 23. The waterproof cover 21 is fixedly connected to the housing 10 and located outside the motor 22. Its main function is to provide a sealed protection for the motor 22, preventing water or moisture from entering the motor 22 and ensuring its normal operation. The waterproof cover 21 adopts a high-sealing design, which can effectively isolate water sources, prevent water from entering the motor 22, and reduce the potential damage of moisture to the motor 22. The waterproof cover 21 plays an important role in ensuring the stability and service life of the drive assembly 20, and is particularly suitable for equipment in underwater environments, ensuring that the equipment can resist water erosion during long-term use.

[0049] The motor 22 is the core component of the drive assembly 20, used to generate suction force and drive the centrifugal pump 23. Through its connection with the centrifugal pump 23, the motor 22 provides the necessary power source, enabling the centrifugal pump 23 to generate sufficient suction force to propel water and dirt along the filter channels. The power and efficiency of the motor 22 directly affect the cleaning effect of the entire device; the stable operation of the motor 22 ensures the continuity and stability of the suction force.

[0050] The impeller 231 of the centrifugal pump 23 is driven to rotate by the motor 22 to generate the required suction force. The centrifugal pump 23 works by generating negative pressure through the rotation of the impeller 231, thereby drawing in water and dirt and propelling them along the water flow channel 30. The design of the impeller 231 of the centrifugal pump 23 allows water to enter the drive assembly 20 efficiently and smoothly, enhancing water flow and ensuring effective separation of water and dirt. The centrifugal pump 23 not only generates sufficient suction force but also optimizes the water flow path through its structure, preventing water stagnation or deviation and ensuring a smooth cleaning process.

[0051] Through the coordinated operation of the waterproof cover 21, the motor 22, and the centrifugal pump 23, the drive assembly 20 can efficiently provide continuous and stable suction. The waterproof cover 21 protects the motor 22 from moisture, and the power generated by the motor 22 is converted into strong suction by the centrifugal pump 23, allowing water and dirt to flow along the water flow channel 30 and ensuring the efficiency and stability of the cleaning effect.

[0052] The axial inlet 232 of the centrifugal pump 23 is interlocked and coaxially sealed with the outlet side of the second filter element 324. This design ensures that the water flow filtered by the second filter element 324 can smoothly and directly enter the center of the impeller 231 of the centrifugal pump 23, thereby effectively utilizing the suction force generated by the centrifugal pump 23 to continue pushing the water flow and dirt. Through this axial inlet 232 design, the water flow undergoes fine filtration before entering the centrifugal pump 23, preventing unfiltered dirt from entering the pump body, ensuring that the operation of the centrifugal pump 23 is not hindered by impurities, extending the service life of the equipment, and improving the overall efficiency of the filtration system. Furthermore, a waterproof seal is provided between the centrifugal pump 23 and the motor 22 to prevent water from entering the motor 22 and affecting its operation.

[0053] Through a sealed connection with the second filter element 324, the axial inlet 232 ensures that water enters the centrifugal pump 23 at a stable pressure and flows smoothly through the center of its impeller 231. This design reduces water flow fluctuations, allowing the centrifugal pump 23 to more efficiently guide the water flow to subsequent treatment processes. After passing through the second filter element 324 and entering the centrifugal pump 23, the water flow direction is effectively controlled, preventing flow deviation or instability and ensuring continuous suction during operation.

[0054] The centrifugal pump 23 of the underwater cleaning device 100 based on the adsorption principle forms a radial outlet 233 between the centrifugal pump 23 and the housing 10. The radial outlet 233 is designed to effectively guide the water flow treated by the centrifugal pump 23 to the outlet 33 of the device. The radial outlet 233 is connected to the outlet 33 to ensure that the water flow, after being treated and filtered by the centrifugal pump 23, can be smoothly discharged outside the device. This design provides an efficient water discharge path, ensuring that the water flow can smoothly transition to the outlet 33, avoiding problems such as stagnation or obstruction during the flow process.

[0055] By placing the radial outlet 233 between the centrifugal pump 23 and the housing 10, the water flow is effectively guided to the outlet 33 by the centrifugal pump 23. This design avoids unnecessary structural restrictions or flow obstructions, ensuring that the water flow path is as simple and efficient as possible. The arrangement of the radial outlet 233 reduces water flow deviation, ensures efficient water discharge, and further improves the overall working efficiency of the device.

[0056] The design further optimizes the water flow path to ensure the stability and continuity of the water flow during the cleaning process. When the water flows through the radial outlet 233 into the outlet 33, the entire system maintains a stable pressure difference along the flow path, thus avoiding any obstruction or instability in the water flow. This stability ensures that the water can be discharged smoothly and maintains the normal operation of the equipment.

[0057] The integral molding of the second filter element 324 with the housing 10 ensures the compactness and stability of the structure. Specifically, the advantage of the integral molding of the second filter element 324 with the housing 10 is that it eliminates potential connection problems between multiple components, simplifies the structure, and improves the sealing and durability of the device. The integral molding design allows the second filter element 324 to be tightly integrated with the housing 10, avoiding water leakage or poor filtration due to loosening or detachment of the connecting part 3213.

[0058] The main function of the second filter element 324 is to ensure that the separated water flows smoothly to the drive assembly 20. It does not directly filter dirt in the water flow, but guides the flow of water through its position and structure, so that the water can effectively enter the drive assembly 20. Since the second filter element 324 is integrally formed with the housing 10, its structure is more coordinated with the overall design of the housing 10, avoiding the risks of leakage, impurity accumulation or instability that may be caused by traditional connection methods.

[0059] The one-piece design not only enhances the overall strength of the device but also improves the system's durability and ease of maintenance. When the water flows through the second filter element 324, it has already undergone preliminary purification by the first filter element 321 in front of the filter. The function of the second filter element 324 is to ensure that the water flows smoothly to the downstream drive component 20, maintain the stability of the water flow, and reduce resistance.

[0060] Furthermore, the one-piece molded structure reduces complex connection processes during manufacturing and assembly, thereby lowering production costs and improving the overall reliability of the device. This design also makes the device less prone to loose connections or component damage during long-term use, increasing its lifespan.

[0061] Please see Figure 8 The second embodiment of this application provides an underwater cleaning method 200 based on the principle of adsorption, the method comprising the following steps: S10: Start the drive component 20 to generate a stable axial suction force.

[0062] In this step, the drive assembly 20 is activated, generating a stable axial suction force from the inlet end 31 to the outlet end 33 within a straight water flow channel 30 coaxially connected by the inlet end 31, the filter assembly 32, the drive assembly 20, and the outlet end 33. This suction force allows the inlet end 31 to extend into the cleaning area, drawing in the water and dirt to be cleaned. The axial suction design ensures that the water flows at a stable speed and direction, effectively guiding the water and dirt into the system for subsequent treatment through the water flow channel 30.

[0063] S20: Water and dirt enter the water flow channel 30 and flow axially.

[0064] Under the action of axial suction, water and dirt enter the water flow channel 30 through the water inlet 31 and flow axially toward the drive assembly 20. This process ensures that the water and dirt move in an orderly manner within the water flow channel 30 and effectively carries the dirt to the filter assembly 32 for treatment.

[0065] S30: Dirt passes through the first filter element 321 and enters the filter housing element 322.

[0066] The impact force of the water flow and the dirt acts on the first filter element 321 of the filter assembly 32, causing the dirt in the water flow to pass through the filter element. The filtered dirt enters and is retained in the downstream receiving filter element 322, while the water source continues to flow, completing the separation of water source and dirt. The first filter element 321 effectively traps larger dirt particles through its mesh structure and ensures that the water flow smoothly into the receiving filter element 322.

[0067] S40: The separated water source continues to flow to the drive component 20.

[0068] After being separated by the first filter element 321, the water continues to flow axially through the second filter element 324 before entering the drive assembly 20. The function of the second filter element 324 is to guide and control the water flow, ensuring that the separated and preliminarily purified water can smoothly enter the drive assembly 20 for further treatment. The second filter element 324 does not remove impurities, but rather ensures the accuracy and stability of the water flow direction, preventing deviation or instability in the water flow.

[0069] S50: Water flowing through the drive assembly 20 is discharged from the outlet 33.

[0070] Finally, the water flowing into the drive assembly 20 is directed out of the outlet 33 at the rear of the device under the action of the drive assembly 20. The drive assembly 20 generates sufficient suction force to push the water flow axially, ensuring that the cleaned water can be smoothly discharged from the system, completing the entire cleaning process.

[0071] The first filter element 321 is configured to automatically open or close according to changes in water flow direction during the operation of the drive assembly 20. Specifically, the first filter element 321 is configured as follows: When the drive assembly 20 is working, the water flow and dirt impact the first filter element 321 through suction, opening the channel to enter the filter screen 322.

[0072] When the drive assembly 20 operates, the suction force generated by the drive assembly 20 draws in water and dirt, which then impacts the first filter element 321. The impact of the water flow causes the flap or channel of the first filter element 321 to open, allowing dirt in the water to enter the filter housing 322. In this way, the dirt is retained within the filter housing 322, while the cleaned water continues to flow downstream.

[0073] When the drive assembly 20 stops working or generates reverse water flow, the first filter element 321 impacts the water flow direction away from the drive assembly 20 to close the receiving filter element 322, preventing the dirt retained in the receiving filter element 322 from flowing back to the inlet end 31.

[0074] When the drive assembly 20 stops working, or when reverse water flow occurs and the water flow direction changes, the first filter element 321 will be impacted and automatically close according to the water flow direction away from the drive assembly 20. This process effectively prevents the dirt retained in the filter element 322 from flowing back to the water inlet 31, thereby avoiding the separation of dirt from re-entering the cleaning area and ensuring the integrity and effectiveness of the cleaning process.

[0075] With this design, the first filter element 321 can not only effectively separate dirt when the drive assembly 20 is working, but also automatically shut off when the equipment stops working or reverse water flow occurs, preventing dirt from flowing back to the inlet 31 and ensuring the long-term efficient operation of the system. This configuration improves the adaptability of the filter element and the stability of the equipment, effectively prevents dirt backflow, and ensures the continuity and reliability of water flow during the cleaning process.

[0076] Therefore, the aforementioned underwater cleaning method and device based on the adsorption principle utilizes an axially continuous straight flow channel, with the outlet 33 positioned at the tail of the drive assembly 20 and all components kept coaxial, forming a continuous pipeline without bends or lateral pressure relief ports. When the drive assembly 20 is activated, a stable, unidirectional pressure difference suction force is established within the pipeline, extending from the high-pressure inlet 31 to the low-pressure outlet 33. This suction force acts like a continuous straw, powerfully and continuously drawing water and dirt from the inlet 31, propelling them along a straight path through the filter assembly 32 for separation, and finally discharging the separated water from the outlet at the very end. This improves cleaning efficiency.

[0077] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. An underwater cleaning device based on the principle of adsorption, comprising a housing, a drive assembly, and a water flow channel formed inside the housing, characterized in that, The water flow channel is an axial flow channel that is sequentially connected along the same axis, and includes: The water inlet is used to draw in the water and dirt to be cleaned. A filter assembly is located downstream of the water inlet along the water flow direction to separate the water source from the dirt and to contain the dirt. A drive assembly, connected downstream of the filter assembly, is used to provide a suction force that drives water and dirt to flow along the axial flow channel. The water outlet is connected downstream of the drive assembly and located at the tail of the housing, and is used to discharge the separated water that flows out of the drive assembly. The inlet, filter, drive, and outlet are coaxially arranged along the water flow direction, forming a continuous linear flow channel.

2. The underwater cleaning device based on the adsorption principle according to claim 1, characterized in that, The filtering component includes: The first filter element is fitted and connected to the water inlet end and has a flip-top structure; The filter element is connected to the first filter element to form a cavity for retaining dirt. The first filter element is located at the connection between the water inlet end and the filter receiving element to separate the water inlet end and the filter receiving element, and the first filter element is located at the end closer to the filter receiving element; The second filter element is located between the drive assembly and the filter housing element to form a gap through which the separated water flows to the drive assembly.

3. The underwater cleaning device based on the adsorption principle according to claim 2, characterized in that, The first filter element includes: The fitting part is fitted and connected to the water inlet end; The filter part is circumferentially connected to the bonding part, and the bonding part wraps around the filter part; The connecting part is connected to the fitting part and the receiving filter part respectively to form a flip cover fixing position.

4. The underwater cleaning device based on the adsorption principle according to claim 3, characterized in that, The bonding part is made of rubber and has friction.

5. The underwater cleaning device based on the adsorption principle according to claim 2, characterized in that, The driving component includes: A waterproof cover is fixedly connected to the housing. The motor generates suction force, and the waterproof cover covers the motor to seal it. A centrifugal pump, the impeller of which is driven to rotate by the motor to generate the suction force.

6. The underwater cleaning device based on the adsorption principle according to claim 5, characterized in that, The axial inlet of the centrifugal pump is inserted into and coaxially sealed with the outlet side of the second filter element, so that the water filtered by the second filter element can smoothly enter the center of the centrifugal pump impeller along the axial direction.

7. The underwater cleaning device based on the adsorption principle according to claim 5, characterized in that, A radial outlet is formed between the centrifugal pump and the housing, and the radial outlet is connected to the outlet end.

8. The underwater cleaning device based on the adsorption principle according to claim 2, characterized in that, The second filter element is integrally formed with the housing.

9. An underwater cleaning method based on the principle of adsorption, characterized in that, The method using the underwater cleaning apparatus according to any one of claims 1 to 8 includes the following steps: When the drive assembly is activated, a stable axial suction force is generated from the inlet end to the outlet end within a straight water flow channel coaxially formed by the inlet end, the filter assembly, the drive assembly, and the outlet end, causing the inlet end of the device to extend into the cleaning area. Under the action of the axial suction force, the water to be cleaned and the dirt enter the water flow channel through the water inlet and flow axially towards the drive component. The impact force of the water flow and the dirt acts on the first filter element of the filter assembly. After passing through the first filter element, the dirt enters and is retained in the downstream receiving filter element, thereby achieving the separation of dirt from the water source. After being separated, the water flows through the gaps in the filter element and continues to flow axially through the second filter element before entering the drive assembly. The water flowing into the drive component is discharged directionally from the outlet located at the tail of the device under the action of the drive component.

10. The underwater cleaning method based on the adsorption principle according to claim 9, characterized in that... The first filter element is configured as follows: When the drive component is working, the water flow and dirt impact the first filter element through suction, opening the channel to enter the filter screen element; When the drive assembly stops working or reverse water flow is generated, the first filter element impacts the water flow direction away from the drive assembly to close the filter screen, preventing the dirt trapped inside the filter screen from flowing back to the inlet end.

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