Filtering device and swimming pool cleaning robot

Abstract

The utility model relates to a filtering device and a swimming pool cleaning robot. The filtering device comprises a peripheral wall, a bottom cover and a first sealing piece. The peripheral wall is provided with a first end and a second end which deviate from each other. An opening is formed in the outer peripheral wall at least at the first end. The bottom cover has a first position and a second position relative to the peripheral wall. At the first position, the interval between the bottom cover and the first end is at least partially larger than a preset distance. The bottom cover is provided with at least one through-flow opening. When the bottom cover is located at the second position, the bottom cover and the first end of the peripheral wall are oppositely arranged, a filtering cavity is defined by the bottom cover and the peripheral wall, the first sealing piece abuts against the position between the peripheral wall and the bottom cover, and the first sealing piece surrounds the periphery of an opening of the first end, so that the swimming pool water in the filtering cavity is prevented from carrying tiny particles; and fine sand and other tiny particulate matters are prevented from leaving the filtering device through the gap and being attached to the inner wall surface of the machine body or flowing back into the swimming pool by passing through the gap between the first end of the peripheral wall and the bottom cover.

Description

Technical Field

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

[0002] To ensure the hygiene of a swimming pool, in addition to filtering and disinfecting the pool water, it is also necessary to clean the dirt adhering to the pool surface. Using a pool cleaning robot to clean the pool surface can effectively reduce the difficulty of pool cleaning.

[0003] Pool cleaning robots typically have an internal filtration system. After cleaning the pool surface with a roller brush, the water carrying dirt is sucked into the robot and passes through the filtration system. Dirt and other debris in the pool are trapped inside the filtration system, while the filtered water flows out from the robot's outlet.

[0004] However, after a certain period of use, traditional pool cleaning robots often have a lot of fine sand or other tiny particles adhering to the inner walls of the machine. This suggests that some fine sand or other tiny particles are flowing back into the pool from the outlet. Utility Model Content

[0005] Based on this, the present invention provides a filtration device and a pool cleaning robot that can solve or at least alleviate the above-mentioned technical problems.

[0006] This utility model provides a filtration device, comprising:

[0007] The outer peripheral wall has a first end and a second end that are opposite to each other; the outer peripheral wall has an opening at least at the first end.

[0008] A bottom cover has a first position and a second position relative to the outer peripheral wall; in the first position, the gap between the bottom cover and the first end is at least partially greater than a predetermined distance; the bottom cover is provided with at least one flow port; and

[0009] First sealing element; when the bottom cover is in the second position, the bottom cover and the first end of the outer peripheral wall are opposite to each other, and the bottom cover and the outer peripheral wall enclose a filter cavity, the first sealing element abuts between the outer peripheral wall and the bottom cover, and the first sealing element surrounds the outer periphery of the opening at the first end.

[0010] In the aforementioned filtration device, when the bottom cover is in the first position, debris inside the filter chamber can be cleaned through the opening at the first end of the outer peripheral wall. During filtration, the filtration device is housed within the body of the pool cleaning robot, with the bottom cover in the second position relative to the outer peripheral wall. The outer peripheral wall and the bottom cover respectively form the boundaries of the filter chamber. Pool water flows into the filter chamber through the inlet. Subsequently, the pool water in the filter chamber is filtered as it permeates to the outside of the outer peripheral wall, trapping dirt and debris within the filter chamber. The filtered pool water is then discharged back outside the machine body. Under gravity, the tiny particles trapped in the filter chamber settle on the inner surface of the bottom cover. Under the combined action of water pressure and gravity, these tiny particles may flow towards the junction between the bottom cover and the first end of the outer peripheral wall. When the bottom cover is in the second position, the first seal abuts against the outer peripheral wall and the bottom cover, and the first seal surrounds the outer periphery of the opening at the first end, thereby preventing the pool water in the filter chamber from carrying tiny particles and passing through the gap between the first end of the outer peripheral wall and the bottom cover, thus preventing fine sand and other tiny particles from leaving the filter device through the gap and adhering to the inner wall surface of the machine or flowing back into the pool.

[0011] In one embodiment, the bottom cover is provided with a first limiting groove; when the bottom cover is in the second position, the opening of the first limiting groove faces the first end of the outer peripheral wall; a portion of the first sealing member is accommodated in the first limiting groove, and another portion is exposed outside the first limiting groove.

[0012] In one embodiment, the bottom cover has an inner wall strip and an outer wall strip on one side; the outer wall strip is arranged around the outer periphery of the inner wall strip; the first limiting groove is defined between the inner wall strip and the outer wall strip; the inner wall strip has a notch; the first sealing member is connected to a positioning block; the positioning block is inserted into the corresponding notch.

[0013] In one embodiment, the bottom cover is provided with a plurality of through holes communicating with the first limiting groove, the plurality of through holes being spaced apart along the first limiting groove; the first sealing member is connected with a plurality of protrusions, the plurality of protrusions being spaced apart along the first sealing member; the plurality of protrusions are respectively inserted into the plurality of through holes.

[0014] In one embodiment, a second seal is further included, which is connected to the bottom cover on the side opposite to the outer peripheral wall and surrounds the outer periphery of the flow port.

[0015] In one embodiment, the bottom cover has a second limiting groove on the side opposite to the outer peripheral wall; the second limiting groove surrounds the outer periphery of the flow port; the depth of the second limiting groove is greater than the thickness of the second seal.

[0016] In one embodiment, it further includes a faceplate and a third seal; the outer peripheral wall has an opening at the second end; the faceplate has at least a third position relative to the outer peripheral wall; in the third position, the faceplate and the second end of the outer peripheral wall are disposed opposite each other, the third seal is held between the faceplate and the second end of the outer peripheral wall, and the third seal surrounds the outer periphery of the opening at the second end.

[0017] In one embodiment, the face cover is provided with a third limiting groove; when the face cover is in the third position, the opening of the third limiting groove faces the second end of the outer peripheral wall, and the third limiting groove surrounds the outer periphery of the second end opening; a portion of the third sealing member is accommodated in the third limiting groove, and another portion is exposed outside the third limiting groove.

[0018] In one embodiment, one end of the bottom cover is rotatably connected to one side of the outer peripheral wall, and the other end is snapped onto the other side of the outer peripheral wall; and / or, one end of the top cover is rotatably connected to one side of the outer peripheral wall, and the other end is snapped onto the other side of the outer peripheral wall.

[0019] A filtration device, comprising:

[0020] The outer peripheral wall has a first end and a second end that are opposite to each other; the outer peripheral wall has an opening at least at the first end.

[0021] A bottom cover has a first position and a second position relative to the outer peripheral wall; in the first position, the gap between the bottom cover and the first end is at least partially greater than a predetermined distance; the bottom cover has at least one flow port; in the second position, the bottom cover is disposed opposite to the first end of the outer peripheral wall, and the bottom cover and the outer peripheral wall enclose a filter cavity; and

[0022] The second seal is connected to the side of the bottom cover away from the outer peripheral wall when the bottom cover is in the second position, and the second seal is arranged circumferentially around the flow port.

[0023] This utility model provides a swimming pool cleaning robot, including the filtration device of any of the above embodiments.

[0024] A swimming pool cleaning robot includes: a body, a second seal, and a filter device housed within the body; the filter device includes an outer peripheral wall and a bottom cover, the outer peripheral wall and the bottom cover at least enclosing a filter cavity; the bottom cover has at least one flow port communicating with the filter cavity; the body has an opening structure positioned corresponding to the flow port; the second seal is circumferentially arranged around the flow port; the second seal abuts against the body and the bottom cover circumferentially. Attached Figure Description

[0025] Figure 1 This is a perspective view of a pool cleaning robot according to an embodiment of this application.

[0026] Figure 2 for Figure 1 The diagram shown is a 3D representation of the pool cleaning robot from another angle.

[0027] Figure 3 for Figure 1 The diagram shown is an exploded view of the pool cleaning robot.

[0028] Figure 4 for Figure 3 The diagram shows a three-dimensional representation of the filtration device in the pool cleaning robot, with the bottom cover in the second position and the top cover in the third position.

[0029] Figure 5 for Figure 4 An exploded view of the filtration device shown.

[0030] Figure 6 for Figure 5 The shown is a three-dimensional sectional view of the filtration device.

[0031] Figure 7 for Figure 4 The diagram shows a three-dimensional representation of the filter device in another state, with the bottom cover in the first position and the top cover in the fourth position.

[0032] Figure 8 for Figure 7 The diagram shown is an exploded view of the filter device after the bottom cover is separated from the first and second seals.

[0033] Figure 9 for Figure 7 The diagram shows an exploded view of the filter device after the bottom cover is separated from the first and second seals at another angle.

[0034] Figure 10 for Figure 7 An exploded view of the filter device after the faceplate and the third seal have been separated.

[0035] Reference numerals: 100, Pool cleaning robot; 20, Body; 201, Flow channel; 202, Inner port; 30, Filter device; 31, Outer peripheral wall; 311, First end; 312, Second end; 313, Filter chamber; 314, Filter screen; 32, Bottom cover; 321, Flow port; 322, First limiting groove; 323, Inner wall strip; 324, Notch; 325, Outer wall strip; 326, Through hole; 327, Second limiting groove; 328, Baffle; 329, Elastic element; 33, First sealing element; 331, Positioning block; 332, Protrusion; 34, Second sealing element; 35, Face cover; 351, Third limiting groove; 36, Third sealing element; 40, Moving mechanism; 50, Pump body. Detailed Implementation

[0036] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not 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 this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] The technical solutions provided by the embodiments of this application are described below with reference to the accompanying drawings.

[0040] Combination Figures 1 to 3As shown, this application provides a swimming pool cleaning robot 100 for cleaning swimming pools. Specifically, the swimming pool cleaning robot 100 includes a body 20 and a filter device 30 installed on the body 20. When pool water passes through the filter device 30, it is filtered, and dirt, small particles, or debris in the pool water are trapped inside the filter device 30. Specifically, the swimming pool cleaning robot 100 is not limited to cleaning swimming pools; it can also be used to perform cleaning operations in other places besides swimming pools, such as fish ponds or tap water filtration ponds.

[0041] In some embodiments, the pool cleaning robot 100 also includes a moving mechanism 40 connected to the body 20. The moving mechanism 40 enables the pool cleaning robot 100 to move entirely within the pool.

[0042] Furthermore, the pool cleaning robot 100 also includes a control module electrically connected to the moving mechanism 40. The control module is used to control the moving speed or positioning of the robot body 20.

[0043] Furthermore, the pool cleaning robot 100 also includes a power module. The power module is used to provide electrical power to the motion mechanism 40 and the control module.

[0044] Furthermore, the pool cleaning robot 100 also includes a pump body 50, which is used to drive pool water into the filter device 30 and drive the filtered pool water out of the body 20.

[0045] Specifically, in combination Figures 4 to 5 As shown, the filter device 30 includes an outer peripheral wall 31, a bottom cover 32, and a first sealing member 33. The outer peripheral wall 31 has a first end 311 and a second end 312 facing away from each other. The outer peripheral wall 31 has an opening at least at the first end 311. The bottom cover 32 has a first position and a second position relative to the outer peripheral wall 31. In the first position, the gap between the bottom cover 32 and the first end 311 is at least partially greater than a predetermined distance. The bottom cover 32 has at least one flow port 321. In the second position, the bottom cover 32 is disposed opposite to the first end 311 of the outer peripheral wall 31, and the bottom cover 32 and the outer peripheral wall 31 enclose a filter cavity 313. The first sealing member 33 abuts against the outer peripheral wall 31 and the bottom cover 32, and the first sealing member 33 surrounds the outer periphery of the opening at the first end 311.

[0046] The filter device 30 of this application, when the bottom cover 32 is in the first position, can clean the debris in the filter chamber 313 through the opening at the first end 311 of the outer peripheral wall 31. During filtration, the filter device 30 is housed within the body 20 of the pool cleaning robot 100, with the bottom cover 32 in a second position relative to the outer peripheral wall 31. The outer peripheral wall 31 and the bottom cover 32 respectively form the boundaries of the filter chamber 313. Pool water flows into the filter chamber 313 through the outlet 321. Subsequently, the pool water in the filter chamber 313 is filtered as it permeates out of the outer peripheral wall 31, trapping dirt and debris within the filter chamber 313. The filtered pool water is then discharged back out of the body 20. Under gravity, the tiny particles trapped in the filter chamber 313 settle on the inner surface of the bottom cover 32. Under the combined action of water pressure and gravity, the tiny particles may flow towards the junction between the bottom cover 32 and the first end 311 of the outer peripheral wall 31. When the bottom cover 32 is in the second position, the first seal 33 abuts against the outer peripheral wall 31 and the bottom cover 32, and the first seal 33 surrounds the outer periphery of the opening at the first end 311, thereby preventing the pool water in the filter chamber 313 from carrying tiny particles and passing through the gap between the first end 311 of the outer peripheral wall 31 and the bottom cover 32, thus preventing fine sand and other tiny particles from leaving the filter device 30 through the gap and adhering to the inner wall surface of the body 20 or flowing back into the pool.

[0047] Optionally, the predetermined distance is any distance that allows for cleaning of the interior of the outer peripheral wall 31 or the bottom cover 32.

[0048] In some implementations, combined Figure 6 and Figure 7 As shown, for the two opposite ends of the bottom cover 32, one end is rotatably connected to one side of the outer peripheral wall 31. In the second position, the other end of the bottom cover 32 is engaged with the other side of the outer peripheral wall 31, thereby facilitating the opening of the bottom cover 32. More specifically, a snap-fit ​​structure is provided between the other end of the bottom cover 32 and the other side of the outer peripheral wall 31.

[0049] In some other embodiments, the bottom cover 32 may also be snapped onto the outer peripheral wall 31 at opposite ends.

[0050] In some implementations, combined Figure 6 and Figure 9As shown, the filter device 30 also includes a second seal 34. The second seal 34 is used to circumferentially abut against the bottom cover 32 and the body 20. The second seal 34 is arranged circumferentially around the inlet 321, thereby preventing pool water carrying small particles from passing through the gap between the body 20 and the bottom cover 32 before entering the inlet 321. This prevents fine sand and other small particles from bypassing the filter device 30 through the gap and adhering to the inner wall of the body 20 or flowing back into the pool. Specifically, the body 20 has an opening structure corresponding to the inlet 321, allowing pool water to flow into the inlet 321 through this opening structure. Understandably, the second seal 34 is arranged circumferentially around the edge of the inlet 321.

[0051] Optionally, the second seal 34 may directly abut between the bottom cover 32 and the body 20. Optionally, other components may abut between the second seal 34 and the bottom cover 32, or between the second seal 34 and the body 20.

[0052] Optionally, the second seal 34 is arranged around the inner periphery of the flow port 321. Specifically, the bottom cover 32 forms an inner bevel on the inner periphery of the flow port 321, and the inner bevel is narrowed along the direction extending into the flow port 321. The second seal 34 is sleeved on the outer periphery of the opening structure of the body 20, and the outer periphery of the second seal 34 abuts against the inner bevel.

[0053] Optionally, the second seal 34 is disposed around the outer periphery of the flow port 321. Specifically, the bottom cover 32 forms an outer bevel on the outer periphery of the flow port 321, and the outer bevel is expanded along the direction extending into the flow port 321. The second seal 34 is sleeved on the outer periphery of the outer bevel, and the opening structure of the body 20 is disposed around the outer periphery of the second seal 34.

[0054] Optionally, when the bottom cover 32 is in the second position, one side of the bottom cover 32 is away from the first end 311 of the outer peripheral wall 31, and the second seal 34 is connected to that side of the bottom cover 32, surrounding the outer periphery of the flow port 321. Specifically, the second seal 34 or the first seal 33 is made of rubber, silicone, or other materials capable of achieving a seal.

[0055] In some other embodiments, the second seal 34 may also be positioned and connected to the body 20. After the filter device 30 is installed in place relative to the body 20, the second seal 34 abuts against the bottom cover 32 and surrounds the outer periphery of the flow port 321.

[0056] In some implementations, combined Figure 8As shown, the bottom cover 32 is provided with a first limiting groove 322. When the bottom cover 32 is in the second position, the opening of the first limiting groove 322 faces the first end 311 of the outer peripheral wall 31. A portion of the first sealing member 33 is accommodated in the first limiting groove 322, and another portion is exposed outside the first limiting groove 322. Specifically, by accommodating the first sealing member 33 in the first limiting groove 322, the first sealing member 33 is limited, so that the first sealing member 33 can be kept in a position surrounding the outer periphery of the flow port 321, ensuring the sealing effect of the first sealing member 33 between the bottom cover 32 and the outer peripheral wall 31.

[0057] Furthermore, the groove is arranged around the circumferential edge of the bottom cover 32. Along the relative direction between the inner and outer surfaces of the bottom cover 32, the thickness of the first sealing member 33 is greater than the depth of the first limiting groove 322, so that another part of the first sealing member 33 is exposed outside the first limiting groove 322 and abuts against the first end 311 of the outer peripheral wall 31.

[0058] Specifically, when the bottom cover 32 is in the second position, the surface of the first end 311 of the outer peripheral wall 31 facing the inner surface is the inner surface, and the surface of the bottom cover 32 facing away from the first end 311 of the outer peripheral wall 31 is the outer surface.

[0059] In some implementations, combined Figure 7 and Figure 8 As shown, the bottom cover 32 has an inner wall strip 323 and an outer wall strip 325 on one side. The outer wall strip 325 surrounds the outer periphery of the inner wall strip 323. A first limiting groove 322 is defined between the inner wall strip 323 and the outer wall strip 325. The inner wall strip 323 has a notch 324. A first sealing member 33 is connected to a positioning block 331, which is inserted into the corresponding notch 324. Specifically, the positioning block 331 and the notch 324 are configured in a one-to-one correspondence. When the first sealing member 33 has an arc segment and a straight segment, the positioning block 331 and the notch 324 can be positioned and connected so that the arc segment of the first sealing member 33 can be accommodated in the curved extension area of ​​the first limiting groove 322, and the straight segment of the first sealing member 33 can be accommodated in the straight extension area of ​​the first limiting groove 322. This ensures that the first sealing member 33 and the inner wall surface of the first limiting groove 322 are fully fitted, avoids the formation of gaps between the first sealing member 33 and the inner wall surface of the first limiting groove 322, and prevents small particles from passing through the gaps.

[0060] Specifically, the inner wall strip 323 and the outer wall strip 325 are respectively protruding relative to the inner surface of the bottom cover 32.

[0061] In some implementations, combined Figure 8 and Figure 9As shown, the bottom cover 32 is provided with a plurality of through holes 326 communicating with the first limiting groove 322, and the plurality of through holes 326 are spaced apart along the first limiting groove 322. The first sealing member 33 is connected with a plurality of protrusions 332, the plurality of protrusions 332 are spaced apart along the first sealing member 33, and the plurality of protrusions 332 are respectively inserted into the plurality of through holes 326. Specifically, one end edge of the through hole 326 is formed on the bottom surface of the first limiting groove 322, and the other end edge is formed on the outer surface of the bottom cover 32. The protrusions 332 are arranged in a one-to-one correspondence with the through holes 326. By observing from one side of the outer surface of the bottom cover 32 that each through hole 326 is respectively inserted with a protrusion 332, it can be confirmed that the first sealing member 33 is evenly distributed in the first limiting groove 322, avoiding gaps between the first sealing member 33 and the inner wall surface of the first limiting groove 322 due to uneven distribution, and preventing small particles from passing through the gaps near the first sealing member 33.

[0062] Specifically, one side of the first sealing member 33 faces the bottom surface of the first limiting groove 322, and a plurality of protrusions 332 are respectively connected to this side of the first sealing member 33.

[0063] In some implementations, combined Figure 6 and Figure 9 As shown, the bottom cover 32 has a second limiting groove 327 on the side opposite to the outer peripheral wall 31. The second limiting groove 327 surrounds the outer periphery of the flow port 321. The depth of the second limiting groove 327 is greater than the thickness of the second sealing member 34. Specifically, the second sealing member 34 is completely accommodated within the second limiting groove 327. The fuselage 20 has a flow guiding channel 201, which connects the outer side of the fuselage 20 and the internal space of the fuselage 20. The flow guiding channel 201 can be understood as a specific form of the opening structure of the fuselage 20. An inner port 202 of the flow guiding channel 201 is formed on the inner side of the fuselage 20. The inner port 202 of the flow guiding channel 201 faces the interior of the fuselage 20. The shape of the inner port 202 of the flow channel 201 corresponds to the shape of the second limiting groove 327. The inner port 202 of the flow channel 201 is inserted into the second limiting groove 327, so that the body 20 and the filter device 30 form a positioning fit. The edge of the inner port 202 abuts against the second seal 34, thereby preventing small particles from passing through the gap between the second seal 34 and the body 20.

[0064] In some implementations, combined Figure 6 As shown, the bottom cover 32 has two flow ports 321, which can increase the flow rate of pool water into the filter chamber 313. Optionally, each of the two flow ports 321 corresponds to a second seal 34. Optionally, the two flow ports 321 are surrounded within the same second seal 34.

[0065] In some implementations, combined Figure 6 and Figure 8As shown, the bottom cover 32 is rotatably connected to a baffle 328 and an elastic element 329. When the pump body 50 stops working, under the elastic force of the elastic element 329, the baffle 328 covers the flow port 321, preventing dirt or debris in the filter chamber 313 from leaking out of the flow port 321 into the machine body 20. Optionally, the elastic element 329 is a torsion spring.

[0066] In some embodiments, the outer peripheral wall 31 is provided with a plurality of filter holes, which can restrict the passage of fine particulate matter, thereby playing a filtering role.

[0067] In other embodiments, combined with Figure 6 As shown, a filter screen 314 is housed within the outer peripheral wall 31. Furthermore, the filter screen 314 is fitted to the inner side of the outer peripheral wall 31. The outer peripheral wall 31 has several perforated areas. The filter screen 314 covers the perforated areas of the outer peripheral wall 31. Specifically, the filter screen 314 filters the pool water, and the outer peripheral wall 31 provides support for the filter screen 314.

[0068] Optionally, combined Figure 5 and Figure 10 As shown, the outer peripheral wall 31 has an opening at the second end 312 to facilitate cleaning of the interior of the outer peripheral wall 31 from above. The filter device 30 also includes a cover 35. The cover 35 has at least a third position relative to the outer peripheral wall 31. In the third position, the cover 35 is positioned opposite the second end 312 of the outer peripheral wall 31, and the cover 35 covers the opening at the second end 312, thereby preventing dirt and debris in the pool water from overflowing from the opening at the second end 312.

[0069] Optionally, the second end 312 of the outer peripheral wall 31 is closed.

[0070] Optionally, the outer peripheral wall 31 may also have filter holes formed at the second end 312. Optionally, the outer peripheral wall 31 may also have a hollow area formed at the second end 312, which is covered by a filter screen 314.

[0071] Furthermore, combined Figure 4 and Figure 7 As shown, the faceplate 35 has a third position and a fourth position relative to the outer peripheral wall 31. In the fourth position, the distance between the faceplate 35 and the second end 312 is at least partially greater than a preset distance. Optionally, the preset distance is any distance that allows cleaning of the interior of the outer peripheral wall 31 or the faceplate 35.

[0072] In some other embodiments, the second end 312 of the outer peripheral wall 31 may be closed.

[0073] In some implementations, combined Figure 6 and Figure 7As shown, the filter device 30 also includes a third seal 36. The third seal 36 abuts against the second end 312 of the cover 35 and the outer peripheral wall 31. The third seal 36 surrounds the outer periphery of the opening of the second end 312, thereby improving the sealing between the cover 35 and the second end 312 of the outer peripheral wall 31. This prevents pool water carrying small particles from passing through the gap between the cover 35 and the second end 312 of the outer peripheral wall 31, and avoids fine sand and other small particles from leaving the filter device 30 through the gap and adhering to the inner wall surface of the body 20 or flowing back into the pool.

[0074] In some implementations, combined Figure 10 As shown, when the faceplate 35 is in the third position, a third limiting groove 351 is provided on the side facing the second end 312 of the outer peripheral wall 31. The third limiting groove 351 surrounds the outer periphery of the opening of the second end 312. A portion of the third sealing member 36 is housed in the third limiting groove 351, and another portion is exposed outside the third limiting groove 351. Specifically, since the third sealing member 36 is partially housed in the third limiting groove 351, the faceplate 35 can limit the third sealing member 36. The portion of the third sealing member 36 exposed outside the third limiting groove 351 abuts against the second end 312 of the outer peripheral wall 31, and the contact surface surrounds the outer periphery of the opening of the second end 312, thereby preventing small particles from passing through the gap between the second end 312 of the outer peripheral wall 31 and the faceplate 35.

[0075] Optionally, the thickness of the third seal 36 is greater than the width of the third limiting groove 351.

[0076] In some other embodiments, the third limiting groove 351 may also be disposed at the second end 312 of the outer peripheral wall 31, so that the third sealing member 36 and the outer peripheral wall 31 form a positioning fit.

[0077] In some implementations, combined Figure 4 and Figure 7 As shown, one end of the cover 35 is rotatably connected to one side of the outer peripheral wall 31, and the other end is snapped onto the other side of the outer peripheral wall 31. In the third position, the other end of the cover 35 is snapped onto the other side of the outer peripheral wall 31, thereby facilitating the opening of the cover 35. More specifically, a snap-fit ​​structure is provided between the other end of the cover 35 and the other side of the outer peripheral wall 31.

[0078] In some other embodiments, the faceplate 35 may also be snapped onto the outer peripheral wall 31 at opposite ends.

[0079] The above embodiments are merely descriptions of preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application should fall within the protection scope defined by the claims of this application.

Claims

1. A filtration device, characterized in that, include: The outer peripheral wall has a first end and a second end that are opposite to each other; the outer peripheral wall has an opening at least at the first end. A bottom cover has a first position and a second position relative to the outer peripheral wall; in the first position, the gap between the bottom cover and the first end is at least partially greater than a predetermined distance; the bottom cover is provided with at least one flow port; and First sealing element; when the bottom cover is in the second position, the bottom cover and the first end of the outer peripheral wall are opposite to each other, and the bottom cover and the outer peripheral wall enclose a filter cavity, the first sealing element abuts between the outer peripheral wall and the bottom cover, and the first sealing element surrounds the outer periphery of the opening at the first end.

2. The filtration device according to claim 1, characterized in that, The bottom cover is provided with a first limiting groove; when the bottom cover is in the second position, the opening of the first limiting groove faces the first end of the outer peripheral wall; a portion of the first sealing member is accommodated in the first limiting groove, and another portion is exposed outside the first limiting groove.

3. The filtration device according to claim 2, characterized in that, The bottom cover has an inner wall strip and an outer wall strip on one side; the outer wall strip is arranged around the outer periphery of the inner wall strip; the first limiting groove is defined between the inner wall strip and the outer wall strip; the inner wall strip has a notch; the first sealing member is connected to a positioning block; the positioning block is inserted into the corresponding notch.

4. The filtration device according to claim 2, characterized in that, The bottom cover is provided with a plurality of through holes communicating with the first limiting groove, and the plurality of through holes are distributed at intervals along the first limiting groove; the first sealing member is connected with a plurality of protrusions, and the plurality of protrusions are distributed at intervals along the first sealing member; the plurality of protrusions are respectively inserted into the plurality of through holes.

5. The filtration device according to claim 1, characterized in that, It also includes a second seal, which is connected to the bottom cover on the side opposite to the outer peripheral wall and surrounds the outer periphery of the flow port.

6. The filtration device according to claim 5, characterized in that, The bottom cover has a second limiting groove on the side opposite to the outer peripheral wall; the second limiting groove surrounds the outer periphery of the flow port; the depth of the second limiting groove is greater than the thickness of the second sealing element.

7. The filtration device according to claim 1, characterized in that, It also includes a faceplate and a third seal; the outer peripheral wall has an opening at the second end; the faceplate has at least a third position relative to the outer peripheral wall; in the third position, the faceplate and the second end of the outer peripheral wall are disposed opposite each other, the third seal is held between the faceplate and the second end of the outer peripheral wall, and the third seal surrounds the outer periphery of the opening at the second end.

8. The filtration device according to claim 7, characterized in that, The cover is provided with a third limiting groove; when the cover is in the third position, the opening of the third limiting groove faces the second end of the outer peripheral wall, and the third limiting groove surrounds the outer periphery of the second end opening; a portion of the third sealing member is accommodated in the third limiting groove, and another portion is exposed outside the third limiting groove.

9. The filtration device according to claim 7, characterized in that, One end of the bottom cover is rotatably connected to one side of the outer peripheral wall, and the other end is snapped into the other side of the outer peripheral wall; and / or, one end of the top cover is rotatably connected to one side of the outer peripheral wall, and the other end is snapped into the other side of the outer peripheral wall.

10. A filtration device, characterized in that, include: The outer peripheral wall has a first end and a second end that are opposite to each other; the outer peripheral wall has an opening at least at the first end. A bottom cover has a first position and a second position relative to the outer peripheral wall; in the first position, the gap between the bottom cover and the first end is at least partially greater than a predetermined distance; the bottom cover has at least one flow port; in the second position, the bottom cover is disposed opposite to the first end of the outer peripheral wall, and the bottom cover and the outer peripheral wall enclose a filter cavity; and The second seal is connected to the side of the bottom cover away from the outer peripheral wall when the bottom cover is in the second position, and the second seal is arranged circumferentially around the flow port.

11. A swimming pool cleaning robot, characterized in that, Includes the filtration device as described in any one of claims 1 to 10.

12. A swimming pool cleaning robot, characterized in that, include: The device comprises a body, a second seal, and a filter housing within the body; the filter includes an outer peripheral wall and a bottom cover, the outer peripheral wall and the bottom cover forming a filter cavity; the bottom cover has at least one flow port communicating with the filter cavity; the body has an opening structure corresponding to the flow port; the second seal is arranged circumferentially around the flow port; the second seal abuts against the body and the bottom cover circumferentially.

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