Filtering device, pool cleaning robot and pool cleaning system

Abstract

The utility model provides a filtering device, a pool cleaning robot and a pool cleaning system. The filtering device comprises a shell, a drainage channel and a rolling piece, the shell is provided with an inner cavity and a water inlet communicated with the inner cavity; the drainage channel is at least partially arranged in the inner cavity, the drainage channel is provided with a first end and a second end, and the first end is connected to the water inlet; the rolling piece is arranged on the channel wall of the second end in a rotating connection mode, and the rolling piece is provided with a stirring part capable of stirring dirt in the inner cavity. According to the scheme provided by the invention, the problem that the normal work of the pool cleaning system is influenced due to the fact that dirt is easily blocked in the filtering device of the pool cleaning machine can be solved.

Description

Technical Field

[0001] This application relates to the field of cleaning robot technology, and in particular to a filtration device, a pool cleaning robot, and a pool cleaning system. Background Technology

[0002] In related technologies, a pool cleaning system includes a base station and a pool cleaning robot. The pool cleaning robot is equipped with a filter device that can collect dirt from the pool during operation. After the pool cleaning robot returns to the base station and reconnects, the base station can use methods such as suction to recover the dirt from the filter device.

[0003] However, when the pool cleaning machine collects dirt from the pool and when the base station recovers dirt from the filter device, the dirt can easily clog the filter device of the pool cleaning machine, affecting the normal operation of the pool cleaning system. Utility Model Content

[0004] This application provides a filtration device, a pool cleaning robot, and a pool cleaning system, which can solve the problem that dirt easily gets clogged in the filtration device of the pool cleaning machine, affecting the normal operation of the pool cleaning system.

[0005] In a first aspect, this application provides a filtration device, including a housing, a flow channel, and a rolling element;

[0006] The housing has an inner cavity and a water inlet communicating with the inner cavity;

[0007] The drainage channel is at least partially disposed in the inner cavity, and the drainage channel has a first end and a second end, the first end being connected to the water inlet;

[0008] A rolling element is rotatably connected to the channel wall at the second end, and the rolling element has a agitating part capable of agitating dirt in the inner cavity.

[0009] The solution provided in this application embodiment includes a rolling element installed on the channel wall at the second end of the drainage channel, and the rolling element is rotatably connected to the channel wall at the second end. When the pool cleaning robot collects dirt from the pool, the rolling element rotates relative to the channel wall at the second end under the influence of the water flow, dislodging debris such as branches in the inner cavity of the housing, thereby guiding the dirt from the drainage channel into the inner cavity of the housing, ultimately allowing the dirt to be successfully collected by the pool cleaning robot. When the base station recycles dirt from the filter device of the pool cleaning robot, the rolling element rotates relative to the channel wall at the second end under the influence of the water flow, dislodging debris such as branches in the inner cavity of the housing, thereby guiding the dirt into the drainage channel, ultimately allowing the dirt to be successfully recycled by the base station. Therefore, this application can solve the problem that dirt easily clogs the filter device of the pool cleaning machine, affecting the normal operation of the pool cleaning system.

[0010] In conjunction with the first aspect, in some possible implementations, the rolling element includes a shaft and a plurality of blades;

[0011] The two ends of the rotating shaft are rotatably connected to the channel wall at the second end;

[0012] Multiple blades are arranged around the rotating shaft on the outer peripheral wall of the rotating shaft, and the multiple blades constitute the actuating part.

[0013] The solution provided in this application embodiment has blades disposed on the outer peripheral wall of the rotating shaft. When the rotating shaft rotates, it can drive the blades to rotate. The agitator composed of multiple blades is arranged around the rotating shaft, so it can continuously agitate the dirt such as tree branches in the inner cavity of the housing and quickly clear the dirt blocked in the filter device.

[0014] In combination with the first aspect and the above-described implementations, in some possible implementations, the blade extends along the axis of the rotation shaft in a straight direction; or

[0015] The blade extends along the axis of the shaft in a helical direction.

[0016] The blades extending along the axis of rotation in the straight direction provided in this application have the advantages of relatively simple processing technology and easy and convenient installation and disassembly. Blades extending along the axis of rotation in the helical direction can better guide the flow direction and velocity distribution of water, reducing eddies and energy loss during the flow process.

[0017] In combination with the first aspect and the above-described implementations, in some possible implementations, the end of the blade away from the rotating shaft is provided with a protrusion or a recess; and / or

[0018] The blade is at least partially made of an elastic element; and / or

[0019] The number of blades is odd; and / or

[0020] The blade is provided with a through hole.

[0021] The solution provided in this application embodiment increases the contact area and friction by using protrusions and recesses, thereby better dislodging debris such as tree branches from the inner cavity of the housing. Furthermore, the blades, which at least partially employ elastic elements, can undergo elastic deformation under external forces during operation, thus dispersing stress, reducing stress concentration, mitigating fatigue damage caused by stress concentration, and effectively extending the blade's service life. They can also absorb energy through deformation when subjected to accidental impacts or overloads, thereby preventing blade breakage.

[0022] In this embodiment, because the number of blades is odd, when the blades on the rotating shaft near the gap close the gap, the blades on the rotating shaft away from the gap face towards the inside of the drainage channel, not towards the inner cavity of the housing. Therefore, on the one hand, the distance between the blades on the rotating shaft away from the gap and the inner wall of the housing is not too small, thus reducing the probability of trapping leaves and other debris. On the other hand, it can also reduce the opening diameter of the drainage channel to a certain extent, thereby increasing the flow velocity within the drainage channel. The increased flow velocity leads to a decrease in pressure within the drainage channel, further improving the adsorption capacity of the drainage channel. Furthermore, setting the number of blades to an odd number is beneficial for the smooth operation of the rolling element.

[0023] In this embodiment, by providing through holes on the blade, some water can pass through the through holes when the water flows over the blade, reducing the obstruction of the blade to the water flow, thereby controlling the speed of the water flow and reducing the pressure of the water flow on the blade, making the water flow on the blade smoother and more stable, effectively reducing the impact and vibration of the water flow on the blade, reducing the noise generated when the blade rotates, and improving the service life of the blade.

[0024] In combination with the first aspect and the above-described implementation, in some possible implementations, one of the outer peripheral wall of the rotating shaft and the blade is provided with a mounting groove, and the other is provided with a connecting part, wherein the connecting part is inserted into and connected to the mounting groove.

[0025] In this embodiment, the blades can be easily installed onto the rotating shaft through a simple insertion action via the plug-in connection between the connecting part and the mounting groove, without the need for complex assembly tools, thus offering the advantages of convenient installation and disassembly. Furthermore, by providing the mounting groove, some material can be removed from the rolling element, effectively reducing its weight and thereby improving the lightweight design of the pool cleaning robot.

[0026] In combination with the first aspect and the above implementation methods, in some possible implementation methods, a gap is reserved between the rotating shaft and the channel wall at the second end;

[0027] The blade is capable of closing at least part of the gap.

[0028] In this embodiment, the blade is configured to at least close the gap between the rotating shaft and the channel wall at the second end. This allows the blade to intermittently close the gap completely or partially during rotation, thereby preventing excessive water leakage from the gap and effectively ensuring the adsorption capacity of the drainage channel, so that small objects such as sand and pebbles can be sucked out.

[0029] In combination with the first aspect and the above-described implementation, in some possible implementations, a sponge pad is fitted onto the end of the rotating shaft.

[0030] In this embodiment, the sponge pad has a certain degree of flexibility. When the rotating shaft is installed on the channel wall at the second end, it can not only wrap around the end of the rotating shaft, but also fit against the channel wall and the edge of the blades at the second end, thereby effectively filling the gap between the blades and the channel wall. In this way, when dirt such as leaves approaches the rotating parts with the water flow, it prevents dirt from being rolled into and stuck to the end of the rotating shaft, ensuring the normal rotation of the rotating shaft. Furthermore, the sponge pad also has a certain degree of elasticity. When the rotating shaft vibrates during rotation, the elastic sponge pad can absorb some of the vibration energy, reducing the impact of vibration on the rotating shaft and blades, reducing noise and vibration levels, and thus improving the working stability and service life of the filtration device.

[0031] In combination with the first aspect and the above-described implementation, in some possible implementations, the rolling element is detachably connected to the channel wall at the second end. This allows the rolling element to be removed from the drainage channel after prolonged use, facilitating cleaning, and also making it easier to maintain or replace the rolling element when it wears out or malfunctions.

[0032] In combination with the first aspect and the above implementation, in some possible implementations, the housing includes a first housing and a second housing connected to the first housing, wherein the first housing extends convergingly from one end near the second housing to one end away from the second housing, forming a recessed portion;

[0033] The second end of the drainage channel extends to the opposite of the recess of the first housing, and the rolling element is disposed at the second end near the channel wall of the second housing.

[0034] In this embodiment, the rolling element is disposed at the second end near the channel wall of the second housing, which can move the dirt accumulated in the recess and effectively guide the dirt into the drainage channel, so that the dirt accumulated in the recess can be successfully recycled by the base station.

[0035] Secondly, this application also provides a pool cleaning robot, comprising:

[0036] The filtration device described in any of the first aspects above.

[0037] Thirdly, this application also provides a pool cleaning system, comprising:

[0038] The pool cleaning robot described in the second aspect above;

[0039] The base station has a docking interface. When the pool cleaning robot is connected to the base station, a portion of the docking interface is connected to the drainage channel through the water inlet. The base station is also equipped with a sewage suction pump, which is used to suck up dirt from the filter device through the docking interface.

[0040] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0042] Figure 1 This is a partial cross-sectional view of a water tank cleaning system provided in an embodiment of this application;

[0043] Figure 2 yes Figure 1 A schematic diagram of the structure of a pool cleaning robot in a pool cleaning system;

[0044] Figure 3 yes Figure 2 A schematic diagram of the filtration device in a water tank cleaning robot;

[0045] Figure 4 yes Figure 2 A cross-sectional view of the filtration device in a water tank cleaning robot in one working state;

[0046] Figure 5 yes Figure 4 Schematic diagram of the rolling element in the filter device;

[0047] Figure 6 yes Figure 2 A cross-sectional view of the filtration device in a water tank cleaning robot in another operating state. The annotations in the figure are explained below:

[0048] 1—Pool cleaning system;

[0049] 100—Base station; 108—Interface;

[0050] 200—Pool cleaning robot;

[0051] 220—Filter device;

[0052] 221—Shell; 2210—First shell; 2220—Second shell; 2201—Inlet; 22121—Recess;

[0053] 222—Drainage channel; 2221—First end; 2222—Second end;

[0054] 2226—Rolling element;

[0055] 2227—Spindle; 22271—Sponge pad;

[0056] 2228—Gap;

[0057] 2229—blade; 22291—protrusion. Detailed Implementation

[0058] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0060] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0061] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0062] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0063] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0064] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0065] In related technologies, a pool cleaning system includes a base station and a pool cleaning robot. The pool cleaning robot is equipped with a filter device that can collect dirt from the pool during operation. After the pool cleaning robot returns to the base station and reconnects, the base station can use methods such as suction to recover the dirt from the filter device.

[0066] However, when the pool cleaning machine collects dirt from the pool and when the base station recovers dirt from the filter, the dirt can easily clog the filter of the pool cleaning machine.

[0067] To address the aforementioned technical problems, this application provides a filtration device, a pool cleaning robot, and a pool cleaning system. The filtration device, pool cleaning robot, and pool cleaning system provided in this application will be described in detail below with reference to the accompanying drawings.

[0068] Please refer to Figure 1 The present application proposes a pool cleaning system 1, which includes a pool cleaning robot 200 and a base station 100.

[0069] See Figures 2 to 4 The pool cleaning robot 200 includes a filtration device 220. The filtration device 220 includes a housing 221, a drainage channel 222, and a rolling element 2226. The housing 221 has an inner cavity and a water inlet 2201 communicating with the inner cavity; the drainage channel 222 is at least partially disposed in the inner cavity, and the drainage channel 222 has a first end 2221 and a second end 2222, the first end 2221 being connected to the water inlet 2201; the rolling element 2226 is rotatably connected to the channel wall of the second end 2222, and the rolling element 2226 has a agitating part capable of agitating dirt in the inner cavity.

[0070] See Figure 1 The base station 100 has an interface 108 and is also equipped with a vacuum pump (not shown in the figure). When the pool cleaning robot 200 is connected to the base station 100, part of the interface 108 is connected to the drainage channel 222 through the water inlet 2201, and the vacuum pump is used to suck up dirt in the filter device 220 through the interface 108.

[0071] It should be noted that the pool cleaning robot 200 has operating postures at the bottom of the pool, operating postures on the side wall of the pool, and a retrieval posture connected to the base station 100. When the pool cleaning robot 200 is working in the pool, the filter device 220 can collect dirt (mainly solid waste such as branches) from the pool. It is understood that the posture of the filter device 220 will also change depending on the posture of the pool cleaning robot 200. Specifically, when the pool cleaning robot 200 is working at the bottom of the pool, see... Figure 2 The water inlet 2201 on the housing 221 of the filter device 220 faces vertically downward. When the pool cleaning robot 200 is working on the side wall of the pool, or when it returns to the base station 100 and connects to the base station 100, see [link to relevant documentation]. Figure 1The inlet 2201 on the housing 221 of the filter device 220 faces horizontally. When the pool cleaning robot 200 performs cleaning tasks, water flows into the inner cavity of the housing 221 through the inlet 2201 and then out through the outlet. Typically, the filter device 220 also contains a filter assembly. Under the filtering action of the filter assembly, the dirt carried by the water flow is retained in the inner cavity of the housing 221. As dirt accumulates in the inner cavity of the housing 221, it can easily block the water flow, making it difficult for the pool cleaning robot 200 to collect the dirt in the pool, or making it difficult for the base station 100 to recover the dirt in the filter device 220.

[0072] The solution provided in this application embodiment includes a rolling element 2226 on the channel wall of the second end 2222 of the drainage channel 222, and the rolling element 2226 is rotatably connected to the channel wall of the second end 2222. When the pool cleaning robot 200 collects dirt from the pool, the rolling element 2226 rotates relative to the channel wall of the second end 2222 under the influence of the water flow, disturbing dirt such as branches in the inner cavity of the housing 221, thereby guiding the dirt from the drainage channel 222 into the inner cavity of the housing 221, and finally allowing the dirt to be successfully collected by the pool cleaning robot 200. When the base station 100 recycles dirt from the filter device 220 of the pool cleaning robot 200, the rolling element 2226 rotates relative to the channel wall of the second end 2222 under the influence of the water flow, disturbing dirt such as branches in the inner cavity of the housing 221, thereby guiding the dirt into the drainage channel 222, and finally allowing the dirt to be successfully recycled by the base station 100.

[0073] It is evident that this application can solve the problem that dirt can easily clog the filter device 220 of the pool cleaning machine, affecting the normal operation of the pool cleaning system 1.

[0074] See Figure 4 and Figure 5 In some embodiments, the rolling element 2226 may include a rotating shaft 2227 and a plurality of blades 2229. The two ends of the rotating shaft 2227 are rotatably connected to the channel wall of the second end 2222; the plurality of blades 2229 are disposed around the rotating shaft 2227 on the outer peripheral wall of the rotating shaft 2227, and the plurality of blades 2229 constitute the actuating part.

[0075] The channel wall at the second end 2222 can be provided with a bearing seat, and a bearing is installed in the bearing seat. The rotating shaft 2227 is rotatably connected to the channel wall at the second end 2222 through the bearing. Alternatively, the channel wall at the second end 2222 can have two protruding structures with mounting holes. Bushings are installed in both mounting holes, and the rotating shaft 2227 is rotatably connected to the channel wall at the second end 2222 by being installed in the bushings. During installation, one end of the rotating shaft 2227 can be first inserted into the bushing of one mounting hole, and then the other end of the rotating shaft 2227 can be inserted into the bushing of the other mounting hole. The arrangement of the blades 2229 on the outer peripheral wall of the rotating shaft 2227 can be varied. For example, the blades 2229 can be evenly distributed along the radial direction of the rotating shaft 2227, with the root of the blade 2229 connected to the rotating shaft 2227.

[0076] In this embodiment, blades 2229 are disposed on the outer peripheral wall of rotating shaft 2227. When rotating shaft 2227 rotates, it can drive blades 2229 to rotate. The agitator composed of multiple blades 2229 is arranged around rotating shaft 2227, so it can continuously agitate the dirt such as tree branches in the inner cavity of housing 221 and quickly clear the dirt blocked in filter device 220.

[0077] like Figure 5 As shown, in some embodiments, the blade 2229 can extend along the axis of the rotating shaft 2227 in a straight direction. In other words, the blade 2229 can adopt a straight plate structure. Thus, the blade 2229 does not require complex molds and processing equipment to manufacture, the processing technology is relatively simple, and due to its regular shape, it is not only easy to install and disassemble, but also can generate a relatively uniform and stable water flow.

[0078] In other embodiments, the blade 2229 may extend along the axis of the shaft 2227 in a helical direction. The helically extended blade 2229 has good water flow guiding capability. Specifically, it can better guide the flow direction and velocity distribution of water flow, reduce eddies and energy loss during the flow process, and cope with complex water flow environments, maintaining relatively stable working performance.

[0079] See Figure 5 In some embodiments, the end of the blade 2229 away from the shaft 2227 is provided with a protrusion 22291 or a recess (not shown in the figure).

[0080] The protrusion 22291 can have various structural forms. For example, in one possible implementation, such as... Figure 5As shown, the protrusion 22291 can be a strip-shaped structure and is disposed on one side or two opposite sides of the end of the blade 2229 away from the rotation axis 2227. In another possible implementation, the protrusion 22291 can be spherical and wrap around the end of the blade 2229 away from the rotation axis 2227 and extend along the extension direction of the blade 2229. In yet another possible implementation, the protrusion 22291 can also be dot-shaped and arrayed on one side or two opposite sides of the end of the blade 2229 away from the rotation axis 2227.

[0081] The recessed portion can also have various structural forms. For example, in one possible implementation, the recessed portion can be strip-shaped and disposed on one side or two opposite sides of the end of the blade 2229 away from the rotation axis 2227. In another possible implementation, the recessed portion can also be dot-shaped and arrayed on one side or two opposite sides of the end of the blade 2229 away from the rotation axis 2227.

[0082] In this embodiment, the protrusion 22291 and the recess can increase the contact area and friction, thereby better dislodging dirt such as tree branches in the inner cavity of the housing 221. Furthermore, the protrusion 22291 can also increase the structural strength and rigidity of the blade 2229; in particular, the strip-shaped protrusion 22291 can improve the bending strength of the blade 2229. The recess can further reduce the weight of the blade 2229, improving the lightweight design of the pool cleaning robot 200.

[0083] In some embodiments, the blade 2229 is at least partially an elastic element.

[0084] The elastic components can be made of elastic materials such as rubber, elastic polymers (e.g., polyurethane), or elastic metals (e.g., nickel-titanium alloy). The blade 2229 can be entirely composed of elastic components. Alternatively, the blade 2229 can partially utilize elastic components. For example, the blade 2229 may include a rigid connection and an elastic component. The rigid connection uses a rigid structural component such as metal or hard plastic and is connected to the outer peripheral wall of the rotating shaft 2227; the elastic component uses an elastic element and is connected to the connection.

[0085] In this embodiment, the blade 2229, which at least partially employs elastic elements, can undergo elastic deformation under external forces during operation. This not only disperses stress, reduces stress concentration, and alleviates fatigue damage caused by stress concentration, effectively extending the service life of the blade 2229, but also absorbs energy through deformation when subjected to accidental impacts or overloads, thus preventing the blade 2229 from breaking. For example, if suddenly struck by a foreign object such as a stone, the elastic blade 2229 can buffer the impact force through deformation, preventing the blade 2229 from breaking due to excessive instantaneous stress, thereby improving the durability of the rolling element 2226.

[0086] See Figure 4 , Figure 5 and Figure 6 In some embodiments, the number of blades 2229 is odd.

[0087] The number of blades 2229 can be three, five, seven, etc. For example, as shown... Figure 5 As shown, the number of blades 2229 can be five.

[0088] In this embodiment of the application, since the number of blades 2229 is odd, when the blades 2229 on the rotating shaft 2227 near the gap 2228 close the gap 2228, such as Figure 6 As shown, the blades 2229 on the rotating shaft 2227, away from the gap 2228, face towards the inner side of the drainage channel 222, and not towards the inner cavity of the housing 221. Therefore, on the one hand, the distance between the blades 2229 on the rotating shaft 2227 away from the gap 2228 and the inner wall of the housing 221 is not too small, thus reducing the probability of trapping leaves and other debris. On the other hand, it also reduces the opening diameter of the drainage channel 222 near the inner wall of the cavity to a certain extent, thereby increasing the flow velocity within the drainage channel 222. The increased flow velocity leads to a decrease in pressure within the drainage channel 222, further improving the adsorption capacity of the drainage channel 222. In addition, setting the number of blades 2229 to an odd number is beneficial for the smooth operation of the rolling element 2226.

[0089] In some embodiments, the blade 2229 is provided with a through hole (not shown in the figure).

[0090] The through-hole can have various shapes. For example, its cross-section can be a regular shape such as a circle, ellipse, or elongated strip, or it can be other irregular shapes. There can be one or multiple through-holes. When there are multiple through-holes, they can be arranged in rectangular, ring, or other arrays. The diameter of the through-holes can be set according to actual needs.

[0091] The solution provided in this application embodiment, by providing through holes on the blade 2229, allows some water to pass through the through holes when water flows over the blade 2229, reducing the obstruction of the blade 2229 to the water flow, thereby controlling the speed of the water flow and reducing the pressure of the water flow on the blade 2229, making the water flow on the blade 2229 smoother and more stable, effectively reducing the impact and vibration of the water flow on the blade 2229, reducing the noise generated when the blade 2229 rotates, and improving the service life of the blade 2229.

[0092] It is understandable that there are multiple ways to connect the shaft 2227 and the blade 2229. In one possible implementation, the shaft 2227 and the blade 2229 are fixedly connected. For example, a permanent connection can be achieved using methods such as integral molding, welding, or bonding. Using a fixed connection not only offers advantages such as simplicity, convenience, and low cost, but also ensures the structural strength and installation accuracy of the connection, improving the operational reliability of the rolling element 2226. In another possible implementation, the shaft 2227 and the blade 2229 are detachably connected. For example, a detachable connection can be achieved using methods such as snap-fit, plug-in, or threaded connection. The rotating shaft 2227 and the blades 2229 are connected by a detachable connection. This not only allows for the removal and replacement of the blades 2229, facilitating regular maintenance, inspection, or replacement of damaged blades 2229, but also enables the adjustment of the installation angle of the blades 2229 or the replacement of blades 2229 with different specifications according to different working conditions, thereby improving the adaptability of the rolling element 2226. Furthermore, when the rotating shaft 2227 and the blades 2229 are detachably connected, multiple matching blades 2229 can be manufactured for the rotating shaft 2227, each with a different diameter through-hole. Users can select blades with through-holes of suitable diameters for the working environment of the pool cleaning robot 200.

[0093] For example, in some embodiments, one of the outer peripheral wall of the rotating shaft 2227 and the blade 2229 is provided with a mounting groove, and the other is provided with a connecting part, which is inserted into the mounting groove. Thus, through the insertion and engagement of the connecting part and the mounting groove, the blade 2229 can be installed onto the rotating shaft 2227 with a simple insertion action, without the need for complex assembly tools, offering the advantages of convenient installation and disassembly. Furthermore, by providing the mounting groove, some material of the rolling element 2226 can be removed, effectively reducing the weight of the rolling element 2226, thereby improving the lightweight nature of the pool cleaning robot 200. The dimensions of the mounting groove and the connecting part are adapted to each other; designers can design suitable mounting grooves and connecting parts as needed, and this application does not specifically limit this aspect.

[0094] See Figure 4 In some embodiments, a gap 2228 is reserved between the rotating shaft 2227 and the channel wall of the second end 2222; the blade 2229 is at least able to close part of the gap 2228.

[0095] The second end 2222 is formed by multiple side panels. In practical applications, the gap 2228 can be formed by removing part of the material from the side panels. For example, in one possible implementation, the second end 2222 is formed by splicing four side panels. Before splicing the four side panels, one side panel can be selected and cut so that its length is less than the length of the other three side panels. Then, the four side panels are spliced ​​together, and the cut portion of one side panel on the completed second end 2222 forms the gap 2228. In another possible implementation, the second end 2222 is integrally molded by injection molding or other methods. When integrally molding the second end 2222, the length of one side of the second end 2222 can be controlled to be shorter than the length of the other side panels, thereby forming the gap 2228.

[0096] Understandably, the reserved gap 2228 provides clearance for the blade 2229, ensuring its smooth passage when the rotating shaft 2227 drives the blade 2229 to rotate. The size of the gap 2228 needs to be rationally designed based on the blade 2229. If the gap 2228 is too large, it will become a significant leakage point, causing excessive water to leak out, thus reducing the water flow rate in the drainage channel 222. Consequently, according to the principle of fluid continuity, this will reduce the kinetic energy of the water flow in the drainage channel 222, thereby decreasing the adsorption capacity for objects accumulated in the recess 22121. This results in small objects such as sand and pebbles being difficult to remove, affecting the recycling performance of the water tank cleaning system 1.

[0097] In this embodiment, the blade 2229 is configured to at least partially close the gap 2228 reserved between the rotating shaft 2227 and the channel wall of the second end 2222. For example, when the blade 2229 extends along the axis of the rotating shaft 2227 in a straight direction, it completely closes the gap 2228; or when the blade 2229 extends along the axis of the rotating shaft 2227 in a spiral direction, it partially closes the gap 2228. In this way, the blade 2229 can intermittently completely close the gap 2228 or partially close the gap 2228 during rotation, thereby preventing excessive water leakage from the gap 2228 and effectively ensuring the adsorption capacity of the drainage channel 222, so that small objects such as sand and pebbles are sucked out.

[0098] See Figure 4 In some embodiments, a sponge pad 22271 is fitted onto the end of the rotating shaft 2227.

[0099] The sponge pad 22271 can be made of materials such as polyurethane, latex, and memory foam, and is usually a sheet-like ring structure. Designers can select sponge pad 22271 with appropriate thickness, inner diameter, outer diameter, and other specifications according to the specifications of the rolling element 2226. This application embodiment does not specifically limit this.

[0100] In this embodiment, the sponge pad 22271 has a certain degree of flexibility. When the rotating shaft 2227 is installed on the channel wall of the second end 2222, it can not only wrap around the end of the rotating shaft 2227, but also fit against the channel wall of the second end 2222 and the edge of the blade 2229, thereby effectively filling the gap between the blade 2229 and the channel wall. In this way, when dirt such as leaves approaches the rolling element 2226 with the water flow, it can prevent dirt from being rolled into and stuck to the end of the rotating shaft 2227, ensuring the normal rotation of the rotating shaft 2227. Furthermore, the sponge pad 22271 also has a certain degree of elasticity. When the rotating shaft 2227 vibrates during rotation, the elastic sponge pad 22271 can absorb some of the vibration energy, reducing the impact of vibration on the rotating shaft 2227 and the blade 2229, reducing noise and vibration levels, and thus improving the working stability and service life of the filter device 220.

[0101] In some embodiments, the rolling element 2226 is detachably connected to the channel wall of the second end 2222. In this way, after the rolling element 2226 has been used for a long time, it can be removed from the drainage channel 222 for easy cleaning, and it is also convenient to maintain or replace the rolling element 2226 when it is worn or malfunctions.

[0102] See Figure 4 and Figure 6 In some embodiments, housing 221 includes a first housing 2210 and a second housing 2220 connected to the first housing 2210. The first housing 2210 extends convergingly from one end near the second housing 2220 to one end away from the second housing 2220, forming a recessed portion 22121. The second end 2222 of the drainage channel 222 extends to the opposite of the recess 22121 of the first housing 2210, and a rolling element 2226 is disposed at the second end 2222 near the channel wall of the second housing 2220.

[0103] The first housing 2210 may include a side wall and a bottom wall. The side wall is disposed adjacent to the second housing 2220, and the bottom wall is disposed opposite to the second housing 2220. The side wall is provided with a water inlet 2201. The bottom wall forms a recess 22121 recessed in a direction away from the second housing 2220. The bottom wall is connected to the side wall and may include a first wall panel and a second wall panel. There are multiple first wall panels arranged around the second wall panel, and the second wall panel is connected to the multiple first wall panels. The included angle between the first wall panel and the second wall panel is greater than 90° and less than 180°. With this configuration, the first wall panel and the second wall panel can construct the recess 22121 recessed in a direction away from the second housing 2220 on the bottom wall of the first housing 2210, so that when the pool cleaning robot 200 returns to the base station 100 and connects with the base station 100, dirt accumulates in the recess 22121.

[0104] When the pool cleaning robot 200 is connected to the base station 100, the interface 108 on the base station 100 can extend into the drainage channel 222 through the water inlet 2201. Since the second end 2222 of the drainage channel 222 extends to the recess 22121 of the first housing 2210, when the sewage pump of the base station 100 is working, the sewage accumulated in the recess 22121 can be more easily sucked away through the drainage channel 222 under the suction action of the sewage pump, which helps to make the sewage in the filter device 220 more thoroughly recovered, so as to further reduce the sewage residue in the filter device 220.

[0105] In this embodiment, the rolling element 2226 is disposed at the second end 2222 near the channel wall of the second housing 2220, which can move the dirt accumulated in the recess 22121 and effectively guide the dirt into the drainage channel 222, so that the dirt accumulated in the recess 22121 can be successfully recycled by the base station 100.

[0106] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A filtration device (220), characterized in that, include: The housing (221) has an inner cavity and an inlet (2201) communicating with the inner cavity; A drainage channel (222) is at least partially disposed in the inner cavity. The drainage channel (222) has a first end (2221) and a second end (2222), and the first end (2221) is connected to the water inlet (2201). A rolling element (2226) is rotatably connected to the channel wall of the second end (2222), and the rolling element (2226) has a moving part capable of agitating dirt in the inner cavity.

2. The filtration device (220) according to claim 1, characterized in that, The rolling element (2226) includes: A rotating shaft (2227), both ends of which are rotatably connected to the channel wall of the second end (2222); and Multiple blades (2229) are arranged around the rotating shaft (2227) on the outer peripheral wall of the rotating shaft (2227), and the multiple blades (2229) constitute the actuating part.

3. The filtration device (220) according to claim 2, characterized in that, The blade (2229) extends in a straight direction along the axis of the rotation shaft (2227); or The blade (2229) extends in a helical direction along the axis of the shaft (2227).

4. The filtration device (220) according to claim 2, characterized in that, The blade (2229) has a protrusion (22291) or a recess at the end away from the rotating shaft (2227); and / or The blade (2229) is at least partially made of an elastic element; and / or The number of blades (2229) is odd; and / or The blade (2229) is provided with a through hole.

5. The filtration device (220) according to claim 2, characterized in that, One of the outer peripheral wall of the rotating shaft (2227) and the blade (2229) is provided with a mounting groove, and the other is provided with a connecting part, which is inserted into the mounting groove.

6. The filtration device (220) according to claim 2, characterized in that, A gap (2228) is reserved between the rotating shaft (2227) and the channel wall of the second end (2222); The blade (2229) is at least partially able to close the gap (2228).

7. The filtration device (220) according to claim 2, characterized in that, The end of the rotating shaft (2227) is fitted with a sponge pad (22271).

8. The filtration device (220) according to claim 2, characterized in that, The rolling element (2226) is detachably connected to the channel wall of the second end (2222).

9. The filtration device (220) according to any one of claims 1 to 8, characterized in that, The housing (221) includes a first housing (2210) and a second housing (2220) connected to the first housing (2210). The first housing (2210) extends from one end near the second housing (2220) to one end away from the second housing (2220) to form a recessed portion (22121). The second end (2222) of the drainage channel (222) extends to the opposite of the recess (22121) of the first housing (2210), and the rolling element (2226) is disposed at the second end (2222) near the channel wall of the second housing (2220).

10. A pool cleaning robot (200), characterized in that, include: The filtration device (220) as described in any one of claims 1 to 9.

11. A pool cleaning system (1), characterized in that, include The pool cleaning robot (200) as described in claim 10; The base station (100) has a docking interface (108) in which a portion of the docking interface (108) is connected to the drainage channel (222) through the water inlet (2201) when the pool cleaning robot (200) is connected to the base station (100). The base station (100) is also equipped with a sewage suction pump for sucking up dirt in the filter device (220) through the docking interface (108).

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