Filter device and swimming pool cleaning robot equipped with the same

Abstract

The utility model provides a filtering device and a swimming pool cleaning robot equipped with the same, wherein the filtering device comprises a housing and a filtering assembly arranged in the housing, wherein the filtering assembly comprises at least one filtering element, and a double filtering effect is achieved through the filtering element and the filtering holes of the housing side wall, thereby effectively filtering out various types of garbage in the water body and collecting them in the housing; specifically, the filtering element is installed in the internal cavity of the housing and a gap is left between the filtering element and part of the side wall, so as to ensure the water flow rate in the filtering device, improve the filtering efficiency and avoid the clogging of the device. The utility model also provides a solution that takes into account the filtering effect of the swimming pool water body and improves the service life of the swimming pool cleaning robot by adopting the filtering device, and by setting the sewage suction port of the swimming pool cleaning robot to be connected to the bottom opening of the filtering device, the bottom of the swimming pool is better cleaned, and the secondary pollution of the water body by the activated sludge at the bottom of the pool is avoided.

Description

Technical Field

[0001] The utility model relates to the field of robot manufacturing, and more specifically, to a filtering device and a swimming pool cleaning robot equipped with the filtering device. Background Art

[0002] The swimming pool cleaning robot can perform cleaning operations without discharging pool water, avoiding the need to stop using the swimming pool due to operations, reducing the heavy labor of cleaning the swimming pool, and saving precious water resources. Most of the existing swimming pool robots use a single filter screen for filtering operations, but when the swimming pool cleaning robot is working, most of the sediments inhaled by the microorganisms contained are formed after precipitation, which is called activated sludge. The activated sludge has a flocculent appearance and has good sedimentation properties, so it can sink to the bottom of the pool and be sucked in and cleaned by the swimming pool cleaning robot. However, when cleaning such activated sludge, if the mesh number of the filter screen of the garbage bin of the swimming pool cleaning robot is too small and the aperture is too large, the activated sludge is easily discharged directly from the aperture, making it difficult to collect the activated sludge, and it cannot effectively clean the water body; but if the mesh number of the filter screen set in the garbage bin is too large and the aperture is too small, the flocculent activated sludge is easy to adhere to the surface of the filter screen, causing the filter screen to be blocked, thereby affecting the normal operation of the swimming pool cleaning robot, and even causing problems such as motor overheating, damaging the swimming pool robot.

[0003] In the prior art, in order to solve the above technical defects, some products modify the garbage bin into two bins, and set different filter screens in the two bins to achieve the process of coarse filtration and fine filtration. However, the two bins still have problems such as the garbage in the water cannot be filtered and collected as originally designed, or the problem of activated sludge blocking the filter screen and affecting the motor operation is not improved. Once the coarse filtration bin and the fine filtration bin are designed in parallel, it is easy to cause the garbage in the water to not be filtered and collected as originally designed. For example, the activated sludge may be directly discharged from the bin with a larger aperture and set up coarse filtration. The effect of thorough cleaning cannot be achieved. At the same time, it will also cause secondary pollution of the swimming pool, so that the cotton-like sediment originally deposited under the pool is sucked in and discharged, and then scattered in the swimming pool, causing the pool water to be turbid. If the coarse filtration bin and the fine filtration bin are stacked, the flocculent activated sludge will still easily adhere to the surface of the filter screen after entering the bin with fine filtration, causing the filter screen to be blocked, thereby affecting the normal operation of the swimming pool cleaning robot. Therefore, in order to ensure the cleaning quality and cleaning effect of the swimming pool cleaning robot and extend the service life of the swimming pool cleaning robot, an efficient and safe filtering device is needed for the swimming pool cleaning robot. Utility Model Content

[0004] The utility model aims to overcome at least one defect of the above-mentioned prior art and provides a filtering device and a swimming pool cleaning robot equipped with the filtering device, while ensuring the cleaning quality and cleaning effect of the swimming pool cleaning robot and extending the service life of the swimming pool cleaning robot.

[0005] The technical solution adopted by the utility model is to provide a filtering device, including a box body and a filtering assembly arranged in the box body, wherein an internal cavity is arranged in the box body, and a water inlet connected to the internal cavity is arranged on the bottom of the box body, and a plurality of filtering holes are arranged on the side wall of the box body; the filtering assembly includes at least one filter element; at least one side portion of the filter element is installed on the side wall of the box body, and the filter element extends toward the internal cavity and hangs above the water inlet; a gap is left between the filter element and part of the side wall, and the projection of the filter element on the bottom of the box body at least partially covers the water inlet.

[0006] In the technical scheme, the filtering device of the swimming pool cleaning robot includes a box body and a filtering assembly arranged in the box body. The bottom is provided with an opening, and the water flow can only flow in from the bottom of the filtering device, so that the water flow circulates inside the box body and flows out from the filtering holes arranged on the side wall of the box body after coarse filtration, so that the debris with larger particle size is filtered and collected inside the box body; at the same time, at least one filter element is arranged in the box body, the filter element is suspended above the water inlet, and partially covers the water inlet, and contacts with the water circulating in the box body, and is used to absorb floating objects in the water such as activated sludge, and realize fine filtration of the water body, and collect floating objects in the water such as activated sludge that are easily adsorbed on the filtering holes on the filter element, so that the combined action of the filtering assembly and the box body realizes a double filtering effect, and then effectively filters out various types of garbage in the water body passing through the filtering device and collects them in the box body. At the same time, the filter element is installed in the cavity inside the box body, and the filter element can be replaced separately after clogging to ensure the effectiveness of the filtering device and extend the service life of the filtering device. Specifically, the filter element is installed on the inner wall of the box body and is arranged in the internal cavity. A gap is left between the filter element and part of the side wall, so that the single filter element does not cover the entire plane of the internal cavity. Part of the water flows through the filter element, thereby ensuring that the water maintains a certain flow rate when flowing through the filter element, improving the filtration efficiency, and also avoiding the clogging and failure of the filter device; at the same time, the projection of the filter element on the bottom of the box body covers the water inlet, so that when sewage flows in from the water inlet, it first contacts the filter element, and the activated sludge adheres to the filter element and no longer enters the filtered water body, which is not easy to cause secondary pollution of the water body.

[0007] Furthermore, the filter element is fixed on a portion of the side wall of the box body.

[0008] Furthermore, a plurality of mounting grooves are provided on the side wall of the box body, and the mounting grooves are connected to the internal cavity; one end of the filter element matches the mounting groove and can be detachably mounted. The mounting grooves provided on the side wall of the box body realize the stable mounting of the filter element on the side wall of the box body, and at the same time, the filter element and the box body are arranged to be detachably mounted, so that the filter element can be freely removed from the box body, which is convenient for the replacement of the filter element, thereby extending the service life of the filter device.

[0009] Further, the filter element includes a support frame and a filter core, the support frame includes an integrally arranged mounting piece and a working piece, the mounting piece is fixedly matched with the mounting groove, the working piece extends into the internal cavity through the mounting groove, and the filter core is installed inside the working piece. Preferably, when the mounting piece is assembled with the mounting groove, the end surface of the mounting piece facing the outside of the box body is provided with ears extending along both sides of the side wall of the box body.

[0010] In the present technical solution, in order to further achieve stable assembly between the filter element and the housing, the filter element is provided to include a support frame and a filter core, and the filter core is protected in the support frame, which facilitates the replacement of the filter core and improves the overall strength of the filter element, so that the filter element can better resist water erosion and ensure that the filter element is stably arranged in the internal cavity. Preferably, the working piece for protecting the filter core and the mounting piece for installation in cooperation with the mounting groove are integrally arranged, thereby further improving the strength of the filter element. Further preferably, when the mounting piece is assembled with the mounting groove, ears extending along both sides of the side walls of the housing are provided on the end face of the mounting piece facing the outside of the housing, so that the mounting piece and the mounting groove are tightly matched, further improving the overall installation stability of the filter element, and making the overall assembly of the filter device more compact.

[0011] As one of the embodiments, the installation groove is provided on the side wall of the box body and is not connected to the outside of the box body. The installation piece can be directly mounted in the installation groove through the snap ears, which effectively improves the installation stability of the filter element and prevents the filter element from falling off during the use, cleaning or replacement of the filter device. Preferably, the box body is a structure that can be opened and matched up and down or left and right, which is convenient for opening and replacing the filter element and then buckling and installing to form a complete box body, which is convenient for thorough cleaning of the inside of the filter device and replacement of the filter element.

[0012] As another embodiment, the installation groove is provided on the side wall of the box body and penetrates the side wall of the box body, the installation piece passes through the installation groove and extends the filter element into the internal cavity, and is connected to the outside of the box body through the clip, which effectively improves the installation stability of the filter element and also facilitates the installation and removal and replacement of the filter element. The provision of the clip also makes the overall assembly of the filter device more compact, effectively preventing debris from entering the box body from the installation groove. Preferably, in order to facilitate the removal and replacement of the filter element, a handle or a pull rope is also provided on the end surface of the installation piece facing the outside of the box body.

[0013] Preferably, the filter element adopts a continuous pleated structure. By setting the filter element to a continuous pleated structure, specifically, a continuous Z-shaped, V-shaped, wavy or sawtooth structure, the area of ​​the filter element in contact with the water body and filtering can be increased, and at the same time, fine pollutants such as cotton-like activated sludge can be well collected in the pleats, and will not flow out of the body directly with the water flow. Further preferably, the filter core is composed of one or more of a filter mesh, filter cotton, activated carbon filter layer, filter paper non-woven fabric, and microporous filter membrane stacked on each other; further, when the filter core adopts a filter mesh, it is provided with a plurality of filter holes, and the pore size of the filter holes provided on the filter core is smaller than the filter holes provided on the side wall of the box body, so as to achieve the dual filtering performance of the filter device.

[0014] Furthermore, there are at least two filter elements, and two adjacent filter elements are installed on different side walls and staggered with a gap between them, and there is an overlapping area between the two adjacent filter elements in the projection of the bottom of the box. Preferably, the filter apertures of different filter elements are different, and the filter apertures arranged on the filter element arranged closer to the water inlet have larger apertures.

[0015] In the technical scheme, the box can also adopt a plurality of filter elements staggered in the vertical direction to form a multi-layer filtration, thereby improving the filtering effect on the water body. Specifically, when at least two staggered filter elements are arranged, the water flows through the plurality of filter elements when flowing through the internal cavity, increasing the contact probability between the filter element and the dirt, thereby achieving a good filtering effect. Since a single filter element only covers a part of the plane of the internal cavity, by making two adjacent filter elements relatively installed on the side wall and staggered, and making the two adjacent filter elements overlap on the projection of the bottom of the box, so that through two planes covering the entire internal cavity, the water flows through the internal cavity, and will definitely pass through the plurality of filter elements, increasing the effective contact probability between the filter element and the dirt, thereby achieving a good filtering effect. Preferably, in order to make the projections of the filter elements toward the bottom plane of the box intersect each other when the filter elements are staggered, the length of the filter element is 51%-80% of the width of the box, so that the dirt that cannot be effectively collected or intercepted by the liquid flowing through the first filter element can effectively reach the second filter element. Preferably, in order to effectively collect dirt and ensure that the water flow rate in the filter device is appropriate, the number of layers of filter elements in the filter device should be selected between 2 and 6. Further preferably, the filter apertures of the multiple filter elements arranged in the internal cavity are inconsistent, and the filter holes arranged on the filter element closer to the water inlet have larger apertures, so that a step-by-step filtration system from coarse to fine is gradually realized between the multiple layers of staggered filter elements in the vertical direction, further optimizing the filtration effect on the water body.

[0016] Furthermore, the filter is inclined toward the bottom side of the box or arranged horizontally, and the angle between the filter and the side wall is 70-90 degrees. In the technical scheme, the liquid flows into the filter device from the bottom opening of the box, and the part of the filter extending into the internal cavity is arranged to be inclined toward the bottom side of the box or to be kept horizontal with the bottom plane of the box, thereby increasing the contact area between the filter and the input liquid flow and improving the filtering effect. Preferably, the angle between the filter and the side wall is 70-90 degrees, thereby saving the installation space of the filter and reducing the volume of the filter device.

[0017] Furthermore, the filter assembly also includes a flow blocker, which is arranged on one end of the filter extending into the internal cavity. In this technical solution, by adding a flow blocker on one end of the filter extending into the internal cavity, not only can the flow velocity of the liquid flowing through the gap between the filter and the inner wall of the box body be reduced, and the contact probability between pollutants in the liquid flow and the filter can be increased, but also coarse particles that are not intercepted by the filter can be intercepted and stored, further improving the filtering effect of the filter assembly; preferably, the flow blocker can be plate-shaped, mesh-shaped, or can be a material that is consistent with the filtering effect in the filter. Preferably, in order to disassemble and replace the baffle and the support together, it is necessary to design the baffle and the filter to be relatively accommodated, so that the baffle and the filter can be removed from the mounting groove provided on the box body as a whole. Specifically, one end of the support frame extending into the internal cavity is provided with a housing cavity with an opening downward, and the baffle is movably connected to the opening of the housing cavity, and the housing cavity is matched with the baffle. When the filter and the baffle are installed normally, the baffle falls vertically from the housing cavity due to its own gravity to achieve interception and filtering. However, when the filter needs to be accommodated or removed, the baffle can be pushed upward into the housing cavity. Preferably, the height of the baffle is 50%-100% of the thickness of the support frame in the vertical direction, which is convenient for the accommodation of the baffle.

[0018] Furthermore, the top of the box is also provided with a liquid outlet, or the top of the box is also provided with a first filter screen, and the aperture of the liquid outlet or the first filter screen is larger than the aperture of the filter hole provided on the side wall of the box. By providing a liquid outlet or a first filter screen with a larger aperture at the top of the box, a liquid loop penetrating the box is formed, so that the device is prevented from stopping after the filter hole in the filter device is blocked, thereby ensuring the safe operation of the filter device.

[0019] The technical scheme also provides a swimming pool cleaning robot, including a body, a sewage suction port is provided at the bottom of the body, and a sewage outlet is provided at the top, a filtering device provided in the technical scheme is provided in the body, and the bottom opening of the box body is connected to the sewage suction port. In the technical scheme, by adopting a filtering device in the swimming pool cleaning robot, the filtering effect of the water body in the swimming pool is improved through the joint action of the multi-layer filtering elements provided therein, and at the same time, the flow rate of the pool water entering the filtering device is guaranteed by the gap provided between the filtering element and its relative inner wall, thereby avoiding the clogging and failure of the filtering device. Further, by providing a sewage suction port at the bottom of the swimming pool cleaning robot body, and connecting the sewage suction port to the bottom opening of the filtering device, the water flow containing pollutants such as activated sludge at the bottom of the pool enters the box body from the bottom, and circulates upward through the filtering device for filtration and collection, and the liquid flow filtered by the filtering device is discharged from the sewage outlet at the top, thereby realizing the filtering cycle of the swimming pool water body, thereby better cleaning the bottom of the swimming pool, and avoiding the activated sludge at the bottom of the pool from being lifted into the water flow to cause secondary pollution.

[0020] The beneficial effects of the utility model are:

[0021] 1. A filter device is provided. By setting an opening at the bottom of the filter device, water can only flow in from the bottom of the filter device, so that the water circulates inside the box and flows out from the filter holes set on the side wall of the box after coarse filtration, so that the debris with larger particle size is filtered and collected inside the box; at the same time, at least one filter element is set in the box, the filter element is suspended above the water inlet, and partially covers the water inlet, and contacts with the water circulating in the box, and is used to absorb floating objects in the water such as activated sludge, etc., to achieve fine filtration of the water body, and collect floating objects in the water such as activated sludge and dirt that are easily adsorbed on the filter holes on the filter element. At the same time, the filter element is installed in the cavity inside the box, and the filter element can be replaced separately after clogging to ensure the effectiveness of the filter device and extend the service life of the filter device. Specifically, the filter element is installed on the inner wall of the box body and is arranged in the internal cavity. A gap is left between the filter element and part of the side wall, so that the single filter element does not cover the entire plane of the internal cavity. Part of the water flows through the filter element, thereby ensuring that the water maintains a certain flow rate when flowing through the filter element, improving the filtration efficiency and avoiding clogging and failure of the filtration device; at the same time, the projection of the filter element on the bottom of the box body covers the water inlet, so that when sewage flows in from the water inlet, it first contacts the filter element, and the activated sludge adheres to the filter element and no longer enters the filtered water body, which is not easy to cause secondary pollution of the water body.

[0022] 2. By using a filtering device in the pool cleaning robot, the filtering element provided therein works together to improve the filtering effect on the water in the pool. At the same time, the gap provided between the filtering element and its inner wall relative to the filtering element ensures the flow rate of the pool water entering the filtering device, thereby avoiding the clogging and failure of the filtering device. Furthermore, by providing a sewage suction port at the bottom of the pool cleaning robot body, and connecting the sewage suction port to the bottom opening of the filtering device, the water flow containing pollutants such as activated sludge at the bottom of the pool enters the box from the bottom, circulates upward through the filtering device to filter and collect garbage, and is discharged, thus achieving the filtering cycle of the pool water, thereby better cleaning the bottom of the pool, and avoiding the activated sludge at the bottom of the pool from being lifted into the water flow to cause secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a cross-sectional schematic diagram of a filtering device of a swimming pool cleaning robot.

[0024] Figure 2 The utility model is a schematic diagram of the structure of a filtering device of a swimming pool cleaning robot.

[0025] Figure 3 The utility model is a cross-sectional schematic diagram of a filter element in a filter device of a swimming pool cleaning robot.

[0026] Figure 4 The utility model is a schematic diagram of the structure of a filter element in a filter device of a swimming pool cleaning robot.

[0027] Figure 5 This is a schematic diagram of the structure of the flow-blocking component in the filtering device of a swimming pool cleaning robot of the utility model.

[0028] Reference numerals: housing 100 , mounting groove 110 , filter element 200 , support frame 210 , working element 211 , mounting element 212 , latch 213 , handle 214 , filter core 220 , flow blocking element 300 , accommodating chamber 310 , first filter screen 400 . DETAILED DESCRIPTION

[0029] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] Example 1

[0031] like Figure 1-Figure 5 As shown, this embodiment provides a filtering device, including a box body 100 and a filtering component arranged in the box body 100. An internal cavity is provided in the box body 100, and an opening connected to the internal cavity is provided at the bottom of the box body 100. Water can only flow in from the bottom of the filtering device, thereby effectively filtering garbage through the filtering component and collecting it in the box body 100.

[0032] The filter assembly includes at least one filter element 200, at least one side portion of the filter element 200 is mounted on the side wall of the box body 100, the filter element 200 extends into the internal cavity and hangs above the water inlet; a gap is left between the filter element 200 and part of the side wall, and the projection of the filter element 200 on the bottom of the box body 100 covers the water inlet;

[0033] Furthermore, the filter element 200 is fixed on a portion of the side wall of the box body 100 .

[0034] Furthermore, a plurality of mounting grooves 110 are provided on the side wall of the box 100, and the mounting grooves 110 are connected to the internal cavity; one end of the filter element 200 matches the mounting groove 110 and can be detachably mounted. The mounting grooves 110 provided on the side wall of the box 100 enable the filter element 200 to be stably mounted on the side wall of the box 100, and at the same time, the filter element 200 and the box 100 are detachably mounted, so that the filter element 200 can be freely removed from the box 100, which is convenient for replacement of the filter element 200, thereby extending the service life of the filter device.

[0035] Further, the filter element 200 includes a support frame 210 and a filter core 220, the support frame 210 includes an integrally arranged mounting member 212 and a working member 211, the mounting member 212 is fixedly matched with the mounting groove 110, the working member 211 extends into the internal cavity through the mounting groove 110, and the filter core 220 is installed inside the working member 211. Preferably, when the mounting member 212 is assembled with the mounting groove 110, the end surface of the mounting member 212 facing the outside of the box body 100 is provided with a clamping ear 213 extending along both sides of the side wall of the box body 100.

[0036] As one embodiment, the installation groove 110 is provided on the side wall of the housing 100 and is not connected to the outside of the housing 100. The installation member 212 can be directly mounted in the installation groove 110 through the snap ears 213, which effectively improves the installation stability of the filter element 200 and prevents the filter element 200 from falling off during the use, cleaning or replacement of the filter device. Preferably, the housing 100 is a structure that can be opened and matched up and down or left and right, so that it is convenient to open and replace the filter element 200 and then snap it together to form a complete housing 100, which is convenient for thorough cleaning of the interior of the filter device and replacement of the filter element 200.

[0037] As another embodiment, the installation groove 110 is provided on the side wall of the box 100 and penetrates the side wall of the box 100. The installation member 212 passes through the installation groove 110 and extends the filter element 220 into the internal cavity, and is clamped to the outside of the box 100 through the clamping ear 213, which effectively improves the installation stability of the filter element 200 and also facilitates the installation, removal and replacement of the filter element 200. The provision of the clamping ear 213 also makes the overall assembly of the filter device more compact, effectively preventing debris from entering the box 100 from the installation groove 110. Preferably, in order to facilitate the removal and replacement of the filter element 200, a handle 214 or a pull rope is further provided on the end surface of the installation member 212 facing the outside of the box 100.

[0038] Preferably, the filter element 200 adopts a continuous pleated structure. By setting the filter element 200 to be a continuous pleated structure, specifically, a continuous Z-shaped, V-shaped, wavy or sawtooth structure, the area of ​​the filter element 200 in contact with the water body and filtering can be increased, and at the same time, fine pollutants such as cotton-like activated sludge can be well collected in the pleats, and will not flow out directly with the water flow. Further preferably, the filter core 220 is formed by stacking one or more of a filter net, filter cotton, activated carbon filter layer, filter paper non-woven fabric, and microporous filter membrane; further, when the filter core 220 adopts a filter net, the aperture of the filter hole set on the filter core 220 is smaller than the filter hole set on the side wall of the box 100.

[0039] Furthermore, there are at least two filter elements 200, and two adjacent filter elements 200 are installed on different side walls and arranged in a staggered manner with a gap between them, and there is an overlapping area in the projection of the bottom of the box 100 of the two adjacent filter elements 200. Preferably, in order to make the projections of the filter elements 200 toward the bottom plane of the box 100 intersect each other when the filter elements 200 are arranged in a staggered manner, the length of the filter element 200 is 51%-80% of the width of the box 100, so that the dirt that cannot be effectively collected or intercepted by the liquid flowing through the first filter element 200 can effectively reach the second filter element 200. Preferably, in order to take into account both the effective collection of dirt and the appropriate water flow speed in the filter device, the number of layers of the filter elements in the filter device should be selected from 2 to 6 layers. Further preferably, the filter apertures of the multiple filter elements 200 arranged in the internal cavity are inconsistent, and the aperture of the filter holes set on the filter element 200 arranged closer to the water inlet is larger, so that a coarse to fine stepped filtration system is gradually realized upwards between the multiple layers of staggered filter elements 200 in the vertical direction, further optimizing the filtering effect on the water body.

[0040] Furthermore, the filter element 200 is inclined toward the bottom side of the box body 100 or is arranged horizontally, and the angle between the filter element 200 and the side wall is 70-90 degrees, thereby saving the installation space of the filter element 200 and reducing the volume of the filtering device.

[0041] Furthermore, the filter assembly further includes a flow blocker 300, which is arranged on one end of the filter element 200 extending into the internal cavity. In the present technical solution, by adding the flow blocker 300 on one end of the filter element 200 extending into the internal cavity, not only can the flow velocity of the liquid flowing through the gap between the filter element 200 and the inner wall of the box body 100 be reduced, and the contact probability between the pollutants in the liquid flow and the filter element 200 be increased, but also the coarse particles not intercepted by the filter element 200 can be intercepted and stored, further improving the filtering effect of the filter assembly; preferably, the flow blocker 300 can be plate-shaped, mesh-shaped, or can be a material consistent with the filter element 200 to achieve the filtering effect.

[0042] Preferably, in order to disassemble and replace the flow blocker 300 and the support member together, it is necessary to design the flow blocker 300 and the filter 200 to be relatively accommodated, so that the flow blocker 300 and the filter 200 can be disassembled from the mounting groove 110 provided on the box 100 as a whole. Specifically, one end of the support frame 210 extending into the internal cavity is provided with a housing chamber 310 with an opening downward, and the flow blocker 300 is movably connected to the opening of the housing chamber 310, and the housing chamber 310 is matched with the flow blocker 300. When the filter 200 and the flow blocker 300 are normally installed, the flow blocker 300 falls vertically from the housing chamber 310 due to its own gravity to achieve an interception and filtering effect. However, when the filter 200 needs to be accommodated or removed, the flow blocker 300 can be pushed upward into the housing chamber 310. Preferably, the height of the flow blocker 300 is 50%-100% of the thickness of the support frame 210 in the vertical direction, which is convenient for the storage of the flow blocker 300.

[0043] Furthermore, a liquid outlet is provided at the top of the box 100, or a first filter screen 400 is provided at the top of the box 100, and the aperture of the liquid outlet or the first filter screen 400 is larger than the aperture of the filter hole provided on the side wall of the box 100. By providing a liquid outlet or a first filter screen 400 with a larger aperture at the top of the box 100, a liquid loop is formed through the box 100, so that the filter device is prevented from stopping after the filter hole in the filter device is blocked, thereby ensuring the safe operation of the filter device.

[0044] Example 2

[0045] This embodiment provides a swimming pool cleaning robot, including a body, a sewage suction port is arranged at the bottom of the body, and a sewage outlet is arranged at the top, and a filtering device as provided in Example 1 is arranged in the body, such as Figure 1-Figure 5 As shown, the bottom opening of the housing 100 is connected to the sewage suction port. By using a filtering device in the swimming pool cleaning robot, the filtering effect of the water in the swimming pool is improved through the joint action of the multi-layer filter element 200 provided therein. At the same time, the flow rate of the pool water entering the filtering device is guaranteed by the gap provided between the filter element 200 and its relative inner wall, thereby avoiding the clogging and failure of the filtering device. Furthermore, by providing a sewage suction port at the bottom of the swimming pool cleaning robot body, and connecting the sewage suction port to the bottom opening of the filtering device, the water flow containing pollutants such as activated sludge at the bottom of the pool enters the housing 100 from the bottom, and circulates upward through the filtering device for filtration and collection, and the filtered liquid flow is discharged from the sewage outlet at the top, thereby realizing the filtering cycle of the swimming pool water, thereby better cleaning the bottom of the swimming pool, and avoiding the activated sludge at the bottom of the pool from being lifted into the water flow to cause secondary pollution.

[0046] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A filtering device, characterized in that: It comprises a box body and a filter assembly arranged in the box body, wherein an internal cavity is arranged in the box body, and a water inlet communicating with the internal cavity is arranged on the bottom of the box body, and a plurality of filter holes are arranged on the side wall of the box body; The filter assembly includes at least one filter element; at least one side portion of the filter element is installed on the side wall of the box body, and the filter element extends into the internal cavity and hangs above the water inlet; a gap is left between the filter element and part of the side wall, and the projection of the filter element on the bottom of the box body at least partially covers the water inlet.

2. The filtering device according to claim 1, characterized in that: The filter element is a continuous pleated structure or a wave structure.

3. The filtering device according to claim 1, characterized in that: A plurality of mounting grooves are provided on the side wall of the box body, and the mounting grooves are communicated with the internal cavity; one end of the filter element matches with the mounting groove and can be detachably mounted.

4. The filtering device according to claim 3, characterized in that: The filter element includes a support frame and a filter core body, the support frame includes an integrally arranged mounting member and a working member, the mounting member is fixed in cooperation with the mounting groove, the working member extends into the internal cavity through the mounting groove, and the filter core body is installed inside the working member.

5. The filtering device according to claim 4, characterized in that: When the mounting piece is assembled with the mounting groove, the end surface of the mounting piece is provided with clamping ears extending along both sides of the side walls of the box body.

6. The filtering device according to claim 4, characterized in that: The filter core is formed by stacking one or more of the following: a filter screen, filter cotton, an activated carbon filter layer, a filter paper non-woven fabric, and a microporous filter membrane.

7. The filtering device according to any one of claims 1 to 6, characterized in that: There are at least two filter elements, and two adjacent filter elements are installed on different side walls with gaps therebetween, and there is an overlapping area on the projection of the bottom of the box body between the two adjacent filter elements.

8. The filtering device according to claim 7, characterized in that: The filter apertures of different filter elements are different, and the filter apertures arranged on the filter element closer to the water inlet have larger apertures.

9. The filtering device according to any one of claims 1 to 6, characterized in that: The filter element is inclined or horizontally arranged toward the bottom side of the box body, and the angle between the filter element and the side wall is 70-90 degrees.

10. The filtering device according to any one of claims 4 to 6, characterized in that: The filter assembly further includes a flow blocker, which is disposed on the filter element and close to an end of the gap.

11. The filtering device according to claim 10, characterized in that: One end of the support frame extending into the internal cavity is provided with a accommodating cavity with an opening downward, the flow-blocking member is movably connected to the opening of the accommodating cavity, and the accommodating cavity is matched with the flow-blocking member.

12. The filtering device according to any one of claims 1 to 6, characterized in that: The top of the box body is also provided with a liquid outlet, or the top of the box body is also provided with a first filter screen, and the aperture of the liquid outlet or the first filter screen is larger than the aperture of the filter hole provided on the side wall of the box body.

13. A swimming pool cleaning robot, comprising a body, wherein the bottom of the body is provided with a sewage suction port, and the top of the body is provided with a sewage outlet, characterized in that: The body is provided with a filtering device as described in any one of claims 1 to 12, and the bottom opening of the box is connected to the water inlet.

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