Filter assembly and underwater cleaning apparatus

Abstract

Disclosed in the present application are a filter assembly and an underwater cleaning apparatus. The filter assembly applies to the underwater cleaning apparatus, the filter assembly comprising a housing and a covering member, wherein a first cavity and a flow guide opening in communication with the first cavity are formed in the housing, the housing having a first state and a second state; a first filter layer is arranged on a side wall of the housing, the first filter layer being in communication with the first cavity; and the covering member is mounted on the housing. In the first state, the covering member covers the flow guide opening; in the second state, the covering member opens the flow guide opening. According to the present application, in the first state, the filter assembly can minimize the impact on the cleaning effect of the underwater cleaning apparatus; in the second state, the filter assembly can increase the water output of the first cavity, enabling the underwater cleaning apparatus to always meet the water intake requirement of a pump suction assembly during a wall-climbing or slope-climbing process (even when the filter assembly has a large amount of dirt), thereby maintaining stable wall-climbing or slope-climbing performance.

Description

Filter components and underwater cleaning equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 8, 2023, with application number 202311159683.0 and invention name “Filter component and underwater cleaning equipment”, the entire contents of which are incorporated by reference into this application.

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 8, 2023, with application number 202322442885.8 and utility model name “Filter component and underwater cleaning equipment”, the entire contents of which are incorporated by reference into this application.

Technical field

[0003] The present application relates to the technical field of underwater working equipment, and in particular to filter components and underwater cleaning equipment. [Background Technology]

[0004] Underwater cleaning equipment includes a filter assembly for filtering and collecting underwater impurities. Related art filter assemblies include a cavity and a filter unit connected to the cavity. To enhance filtering effectiveness, filters are provided on all four sides of the cavity. Generally, the filter unit includes a flow port connected to the cavity and a filter layer covering the flow port. As water flows in and out of the cavity, the filter layer filters impurities from the water.

[0005] However, when there are too many impurities, they accumulate in the filter layer, clogging the filter pores. When the filter layer is clogged, it is difficult for water in the filter assembly to pass through the filter layer and flow into the pump assembly, resulting in insufficient water intake and, in turn, insufficient thrust generated by the pump assembly, affecting the underwater cleaning equipment's ability to climb walls or slopes, thereby reducing the user experience.

[0006] [Summary of the invention]

[0007] An embodiment of the present application proposes a filter assembly that can be used on underwater cleaning equipment. The filter assembly includes: a box body, the box body is formed with a first cavity and a diversion port connected to the first cavity; the box body includes a first state and a second state; a first filter layer is arranged on the side wall of the box body, and the first filter layer is connected to the first cavity; a cover member is installed on the box body, wherein, in the first state, the cover member covers the diversion port; in the second state, the cover member opens the diversion port.

[0008] The cover is pivotally connected to the box body; the filter assembly also includes an adjusting member installed on the cover, which is away from the pivotal connection between the cover and the box body; the adjusting member assists the cover to close or open the diversion port.

[0009] In which, the cover member includes a first side end and a second side end that are relatively arranged; the first side end is located at the uppermost end of the cover member, and the second side end is located at the lowermost end of the cover member; the first side end is pivotally connected to the box body, and the second side end pivots around the first side end to open or close the guide port, and when the filter assembly as a whole is located underwater, the gravity of the adjusting member is greater than the buoyancy; or, the second side end is pivotally connected to the box body, and the first side end pivots around the second side end to open or close the guide port, and when the filter assembly as a whole is located underwater, the buoyancy of the adjusting member is greater than the gravity.

[0010] The first side end is pivotally connected to the box body, and the density of the adjusting member is greater than 1 kg / m 3 .

[0011] The first side end is pivotally connected to the box body, and the ratio of the distance from the center of the adjusting member to the first side end to the distance from the center of the adjusting member to the second side end is less than 1.

[0012] Among them, the first side end is pivotally connected to the box body, and the adjusting member is protruded on the inner side of the covering member facing the first cavity. When the box body is in the first state, the line connecting the center of gravity of the adjusting member and the pivot center of the covering member forms an acute angle with the direction of gravity.

[0013] The second side end is pivotally connected to the box body, and the density of the adjusting member is less than 1 kg / m 3 .

[0014] In which, the second side end is pivotally connected to the box body, and the filter assembly also includes a moving part; the covering part also includes a accommodating channel, the accommodating channel is arranged between the first side end and the second side end, and the center line of the accommodating channel intersects with the plane where the first side end or the second side end is located; the moving part is accommodated in the accommodating channel and can move along the accommodating channel.

[0015] Wherein, the center line of the accommodating channel intersects perpendicularly with the plane where the first side end or the second side end is located.

[0016] The covering member includes an inner side surface facing the first cavity; the accommodating channel extends from the second side end toward the direction close to the inner side surface and toward the first side end.

[0017] The movable part is a rolling part. A mounting bracket is provided on the side wall of the box body, and the mounting bracket covers the diversion port. The portion of the mounting bracket covering the diversion port is provided with a plurality of grille holes, and the grille holes are connected to the diversion port. The cover is movably mounted on the mounting bracket.

[0018] Among them, a side surface of the mounting bracket facing the first cavity is recessed with a receiving cavity, and a side wall of the receiving cavity is provided with a pivot mounting groove; the covering part is movably accommodated in the receiving cavity, the covering part is convexly provided with a pivot portion, and a stop limit protrusion is provided below the pivot portion; the pivot portion is pivotally installed in the pivot mounting groove, and the stop limit protrusion rotates with the covering part until it stops on the side wall.

[0019] The edge of the covering member is further extended with an overlapping portion, and the overlapping portion abuts against the inner side surface of the mounting bracket when the covering member is accommodated in the accommodating cavity.

[0020] The diversion port includes several diversion sub-ports.

[0021] The box body includes a first side, a second side, a third side wall and a fourth side. The first side and the second side are arranged opposite to each other, the third side and the fourth side are arranged opposite to each other, and the guide port is arranged on at least one of the first side, the second side and the third side.

[0022] The filter assembly includes a drive assembly, which is connected to the cover member and is used to drive the cover member to close or open the diversion port.

[0023] An embodiment of the present application also proposes an underwater cleaning device, comprising: the filter assembly described above; a dust bin, forming a second cavity, the filter assembly is arranged in the second cavity, the second cavity is connected to the first cavity of the box body in the filter assembly, and a water inlet is formed between the box body and the dust bin, and the water inlet is connected to the first cavity; a pumping assembly, arranged outside the dust bin, and the pumping assembly is connected to the second cavity; when the box body of the filter assembly is in a first state, the pumping assembly is used to guide water to flow into the pumping assembly from the water inlet, the first cavity, the first filter layer and the second cavity in sequence, wherein the first state is the state of the box body when the underwater cleaning equipment moves in a direction perpendicular to gravity; when the box body of the filter assembly is in a second state, the pumping assembly is used to guide at least part of the water to flow into the pumping assembly from the water inlet, the first cavity, the diversion port and the second cavity in sequence.

[0024] The cover is provided with a second filter layer. When the filter assembly is in the first state, the second filter layer is communicated with the first cavity and the second cavity respectively.

[0025] The pumping assembly includes an impeller cover, and the area of ​​the guide port of the filter assembly is larger than the water inlet cross-sectional area of ​​the impeller cover.

Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0027] FIG1 is a cross-sectional schematic diagram of a first state of an embodiment of a filter assembly of the present application;

[0028] FIG2 is an enlarged schematic diagram of A in FIG1 ;

[0029] FIG3 is a cross-sectional schematic diagram of a second state of an embodiment of a filter assembly of the present application;

[0030] FIG4 is an enlarged schematic diagram of B in FIG3 ;

[0031] FIG5 is a cross-sectional schematic diagram of another embodiment of the filter assembly of the present application in a first state;

[0032] FIG6 is an enlarged schematic diagram of C in FIG5 ;

[0033] FIG7 is a cross-sectional schematic diagram of another embodiment of the filter assembly of the present application in a second state;

[0034] FIG8 is an enlarged schematic diagram of D in FIG7;

[0035] FIG9 is a partial schematic diagram of a first state of an embodiment of a filter assembly of the present application;

[0036] FIG10 is a partial schematic diagram of a second state of an embodiment of a filter assembly of the present application;

[0037] FIG11 is a partial schematic diagram of another embodiment of the filter assembly of the present application in a second state;

[0038] FIG12 is a schematic structural diagram of a mounting bracket in another embodiment of the filter assembly of the present invention;

[0039] FIG13 is a partial schematic diagram of an embodiment of the underwater cleaning device of the present application;

[0040] FIG14 is a partial explosion diagram of an embodiment of the underwater cleaning device of the present application;

[0041] FIG15 is a partial cross-sectional schematic diagram of an embodiment of the underwater cleaning device of the present application.

[0042] Figure numbers: 100, underwater cleaning equipment; 10, filter assembly; 1, box body; 1a, first side; 1b, second side; 1c, third side; 1d, fourth side; 11, first cavity; 12, diversion port; 13, water inlet; 2, cover; 2a, first side end; 2b, second side end; 21, connecting part; 22, accommodating channel; 23, pivot part; 24, overlapping part; 25, inner side; 31a, 31b, adjusting part; 32, moving part; 4, mounting bracket; 41, grille hole; 42, accommodating cavity; 43, pivot mounting groove; 44, mounting part; 45, mounting buckle; 20, dust bin; 201, second cavity; 30, pump suction assembly; 301, impeller cover; 302, impeller; 303, water pump motor. [Specific implementation method]

[0043] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] The filter assembly and underwater cleaning equipment provided by the present application are described in detail below with reference to the embodiments.

[0046] Please refer to Figures 1 and 2. Figure 1 is a cross-sectional schematic diagram of the first state of an embodiment of the filter assembly of the present application; Figure 2 is an enlarged schematic diagram of A in Figure 1. One aspect of an embodiment of the present application provides a filter assembly 10. The filter assembly 10 is used in underwater cleaning equipment. The filter assembly 10 includes a box body 1, a first filter layer (not shown in the figure) and a cover 2. The box body 1 is formed with a first cavity 11 and a diversion port 12 connected to the first cavity 11. The box body 1 includes a first state and a second state. The first filter layer is arranged on the side wall of the box body 1. The first filter layer is connected to the first cavity 11. The cover 2 is installed on the box body 1. In the first state, the cover 2 seals and covers the diversion port 12. In the second state, the cover 2 opens the diversion port 12.

[0047] Specifically, the underwater cleaning device is used to clean stains and suspended matter from areas such as pools and swimming pools. The underwater cleaning device can be a pool cleaning robot, a swimming pool cleaning robot, or the like, without limitation. The water inlet 13 on the housing 1 allows water to enter the first cavity 11. The first filter layer is used for filtering. Water enters the first cavity 11 of the housing 1 through the water inlet 13, where it is filtered of impurities and the like. The filtered water enters the dust bin of the underwater cleaning device and then flows through the dust bin into the pump assembly of the underwater cleaning device.

[0048] The diversion port 12 is provided through the side wall of the housing 1. The first state can be the state of the filter assembly 10 when the underwater cleaning device is cleaning an underwater surface. Here, the filter assembly 10 is in a normal placement state, and the cover 2 is naturally placed to cover the diversion port 12. The second state can be the state of the filter assembly 10 when the underwater cleaning device is climbing a slope or wall underwater. In this state, the filter assembly 10 is tilted or inverted along with the underwater cleaning device. Under the influence of gravity and / or external forces, the cover 2 moves to open the diversion port 12. The first state and the second state are different.

[0049] Please refer to Figures 3 and 4. Figure 3 is a cross-sectional schematic diagram of an embodiment of the filter assembly of the present application in the second state; Figure 4 is an enlarged schematic diagram of section B in Figure 3. In conjunction with Figures 1 and 2, the cover member 2 is movably mounted on the housing 1, enabling movement relative to the housing 1. When the housing 1 is in the first state, the cover member 2 covers the diversion port 12, allowing water within the first cavity 11 to flow out through the first filter layer of the housing 1, thereby minimizing the impact on the cleaning performance of the underwater cleaning equipment and enabling the underwater cleaning equipment to perform its normal cleaning function.

[0050] Please refer to Figures 5, 6, 7, and 8. Figure 5 is a cross-sectional schematic diagram of another embodiment of the filter assembly of the present application in the first state; Figure 6 is an enlarged schematic diagram of C in Figure 5; Figure 7 is a cross-sectional schematic diagram of another embodiment of the filter assembly of the present application in the second state; and Figure 8 is an enlarged schematic diagram of D in Figure 7. In conjunction with Figures 1 to 4, when the filter assembly 10 is in the second state, the cover 2 gradually opens the diversion port 12. At least a portion of the water in the first cavity 11 flows directly out through the diversion port 12, increasing the water output of the box body 1. This allows the underwater cleaning equipment to always meet the water intake requirements of the pumping assembly during the wall climbing or slope climbing process (even if the filter assembly is heavily contaminated), thereby maintaining stable wall climbing or slope climbing performance.

[0051] Thus, through the cooperation between the first cavity 11, the diversion port 12, and the cover 2 in the box body 1, when the box body 1 is in the first state, the cover 2 covers the diversion port 12, which can reduce the impact on the cleaning effect of the underwater cleaning equipment. When the box body 1 is in the second state, the cover 2 opens the diversion port 12, increases the water output of the first cavity 11, increases the water intake of the pumping assembly, and thus increases the thrust of the underwater cleaning equipment, thereby improving the wall climbing or climbing performance of the underwater cleaning equipment and enhancing the user experience.

[0052] The above-mentioned diversion port 12 may include a diversion sub-port (not shown in the figure). Alternatively, the diversion port 12 may include more than two diversion sub-ports, such as two diversion sub-ports, three diversion sub-ports and multiple diversion sub-ports. The number of diversion sub-ports can be determined according to actual conditions. When the number of diversion sub-ports includes multiple, the water output of the diversion port 12 formed by the combination of multiple diversion sub-ports needs to be kept consistent with the water output of the diversion port 12 formed by one diversion sub-port as much as possible to ensure that the water output of the diversion port 12 is consistent, thereby satisfying the underwater cleaning equipment during the process of climbing a wall or climbing a slope (even if the filter component is more contaminated) to always meet the water intake requirements of the pump suction component, thereby maintaining stable wall climbing or climbing performance.

[0053] In some embodiments, the above-mentioned covering member 2 can be driven by a driving assembly (not shown in the figure), and the driving assembly is connected to the covering member 2, so that the covering member 2 can cover and open the guide port 12. Among them, the driving assembly may include a driving motor (not shown in the figure), and the driving motor is connected to the covering member 2, thereby controlling the movement of the covering member 2. Alternatively, a related structure is provided on the covering member 2, and the covering member 2 and the related structure are used to realize self-drive, so that the covering member 2 can cover and open the guide port 12. In other embodiments, the covering member 2 can also cover and open the guide port 12 in other ways, etc., which are not limited here. Among them, the covering member 2 can be a cover plate, a flap, etc.

[0054] Please refer to Figures 9 and 10. Figure 9 is a partial schematic diagram of the first state of an embodiment of the filter assembly of the present application; Figure 10 is a partial schematic diagram of the second state of an embodiment of the filter assembly of the present application. In combination with Figures 1 to 4, in some embodiments, the cover 2 is pivotally connected to the box body 1. When the cover 2 is pivotally connected to the box body 1, the cover 2 can cover and open the diversion port 12 more effortlessly. The filter assembly 10 also includes adjustment members 31a, 31b installed on the cover 2. The adjustment members 31a, 31b are away from the pivotal connection between the cover 2 and the box body 1. The installation position of the adjustment members 31a, 31b is away from the pivotal connection between the cover 2 and the box body 1. The adjustment members 31a, 31b assist the cover 2 in covering or opening the diversion port 12.

[0055] In the first state, the pivot point of the cover 2 rotating around the box body 1 is located on the line of action of the sum of the gravity and buoyancy of the cover 2 and the adjusting parts 31a, 31b, that is, the rotational torque of the cover 2 around the box body 1 is zero. Therefore, the cover 2 will not pivot and will always be in a vertical state, so that it can cover the guide port 12 well.

[0056] In the second state, the filter assembly 10 is tilted or inverted, and the pivot point of the cover 2 rotating about the box body 1 deviates from the line of action of the sum of the gravity and buoyancy forces acting on the cover 2 and the adjustment members 31a, 31b. In other words, the rotational torque of the cover 2 about the box body 1 is no longer zero, thereby exerting a rotational torque on the cover 2 about the box body 1, forcing the cover 2 to rotate and open the diversion port 12. The adjustment members 31a, 31b can be components of different densities, as long as they can assist the movement of the cover 2, and their specific structure is not limited.

[0057] Through the above-mentioned adjusting parts 31a, 31b and the position limitation of the adjusting parts 31a, 31b on the cover part 2, not only can the cover part 2 be closed to the guide port 12 or open the guide port 12 more quickly, thereby increasing the water output of the first cavity 11 and then increasing the water intake of the pump suction component, thereby improving the wall climbing or climbing performance of the underwater cleaning equipment, but also the cover part 2 can autonomously change between the first state and the second state, which can reduce the use of drive components and save costs.

[0058] Specifically, the cover 2 includes a first side end 2a and a second side end 2b that are relatively arranged. When the filter assembly 10 is in the first state and the second state, the first side end 2a is located at the uppermost end of the cover 2, and the second side end 2b is located at the lowermost end of the cover 2. The first side end 2a and the second side end 2b can both be configured to be pivotally connected to the box body 1. However, due to the different positions of the first side end 2a and the second side end 2b, when they are pivotally connected to the box body 1, the overall force of the cover 2 will be different. In order to achieve the above-mentioned purpose of closing the diversion port 12 in the first state and opening the diversion port 12 in the second state, based on the different situations of whether the first side end 2a or the second side end 2b is pivotally connected to the box body 1, it is necessary to adjust the settings of the adjustment members 31a, 31b to assist the cover 2 in exerting force. Based on this, the specific results when the first side end 2a or the second side end 2b is pivotally connected to the box body 1 are specifically described and analyzed below:

[0059] In one embodiment, the first side end 2a is pivotally connected to the box body 1, and the second side end 2b is pivoted about the first side end 2a to move away from or toward the box body 1, so as to open or close the diversion port 12. At this time, the filter assembly 10 is entirely underwater, that is, the filter assembly 10 is entirely below the water surface, and the weight of the adjusting member 31a is set to be greater than the buoyancy.

[0060] Specifically, the first side end 2a is pivotally connected to the box body 1, and the adjusting member 31a is positioned away from the pivotal connection between the first side end 2a and the box body 1. Because the weight of the adjusting member 31a is greater than the buoyancy, the second side end 2b can pivot about the first side end 2a away from the box body 1, allowing the cover 2 to open the diversion port 12. Alternatively, the second side end 2b can pivot about the first side end 2a to abut against the box body 1, allowing the cover 2 to close over the diversion port 12. The weight of the adjusting member 31a is much greater than the buoyancy of the cover 2 in water. When the box body 1 is in the first state, the cover 2 relies on the adjusting member 31a to shift its center of gravity, which helps to create a certain preload force on the cover 2 in the direction of gravity. This preload force allows the cover 2 to adhere to the box body 1. When the box body 1 is in the second state, the cover 2 relies on its own weight and the weight of the adjusting member 31a to cause the second side end 2b to pivot about the first side end 2a away from the box body 1.

[0061] Therefore, through the above-mentioned first side end 2a being pivotally connected to the box body 1, the second side end 2b is pivoted around the first side end 2a to be away from or against the box body 1, and the gravity of the adjusting member 31a is greater than the buoyancy, which not only increases the speed of the covering member 2 to close or open the guide port 12, but also makes it easier for the covering member 2 to autonomously change between the first state and the second state, thereby reducing the use of drive components and saving costs.

[0062] Optionally, in this embodiment, the density of the adjusting member 31a is greater than 1 kg / m 3 The density of the adjusting member 31a can be 1.1 kg / m 3 , 2kg / m 3 3kg / m 3 3.4kg / m 3 , 4.3kg / m 3 etc., not limited here. That is, the density of the adjusting member 31a needs to be greater than the density of water. When the box body 1 is in the first state, the cover member 2, relying on the gravity generated by the adjusting member 31a, extends in the direction of gravity, i.e., the cover member 2 remains in a vertical position, and can now cover the diversion port 12. Furthermore, when the box body 1 is in the second state, the cover member 2 can open the diversion port 12 by relying on its own gravity and the gravity of the adjusting member 31a.

[0063] Thus, by limiting the density of the adjustment member 31a, it is easy to adjust the cover member 2 to quickly close or open the diversion port 12. The adjustment member 31a can be a counterweight (not shown in the figure), etc. The counterweight can be a metal block, an alloy block, a stone, etc., which is not limited here.

[0064] More specifically, the ratio of the distance from the center of the adjusting member 31a to the first side end 2a to the distance from the center of the adjusting member 31a to the second side end 2b is less than 1. The distance from the center of the adjusting member 31a to the first side end 2a may be S1. The distance from the center of the adjusting member 31a to the second side end 2b is S2. The ratio of S1 to S2 is less than 1. By limiting the positional relationship between the adjusting member 31a and the first side end 2a and the second side end 2b, the position of the center of gravity of the cover 2 is adjusted, which is beneficial for providing a certain pre-tightening force to the cover 2 in the first state, thereby improving the tightness of the cover 2 to the box body 1.

[0065] In some specific application scenarios, the adjustment member 31a is protruded from the inner side surface 25 of the cover 2 facing the first cavity 11. When the box body 1 is in the first state, the line connecting the center of gravity of the adjustment member 31a and the pivot center of the cover 2 is at an acute angle to the direction of gravity. The adjustment member 31a can be detachably or fixedly connected to the cover 2. Among them, the detachable method can be a snap-on, plug-in or bolt-on method, etc. The line connecting the center of gravity of the adjustment member 31a and the pivot center of the cover 2 is at an acute angle to the direction of gravity, that is, the center of gravity of the adjustment member 31a is set higher than the side of the cover 2 facing the first cavity 11, thereby increasing the pre-tightening force of the cover 2 in the first state, thereby increasing the speed of the cover 2 covering the guide port 12; at the same time, it is easier for the cover 2 to pivot away from the guide port 12, thereby increasing the speed of the cover 2 opening the guide port 12.

[0066] Furthermore, the cover 2 is provided with a connecting portion 21. The connecting portion 21 provides an installation position for the adjusting member 31a. The adjusting member 31a can be arranged in the connecting portion 21 by means of snap connection, plug connection or bolt fixation.

[0067] Please refer to Figures 11 and 12. Figure 11 is a partial schematic diagram of the second state of another embodiment of the filter assembly of the present application; Figure 12 is a structural schematic diagram of the mounting bracket of another embodiment of the filter assembly of the present application. In conjunction with Figures 5 to 6, in another embodiment, the second side end 2b is pivotally connected to the box body 1. The first side end 2a pivots around the second side end 2b to move away from or against the box body 1 to facilitate opening or closing the diversion port 12. At this time, the filter assembly 10 is located underwater as a whole, that is, the filter assembly 10 is located below the water surface as a whole, and the buoyancy of the adjustment member 31b is set to be greater than gravity.

[0068] Specifically, the second side end 2b is pivotally connected to the box body 1, and the adjusting member 31b is away from the pivotal connection between the second side end 2b and the box body 1. The first side end 2a can pivot about the second side end 2b away from the box body 1, allowing the cover 2 to open the diversion port 12. Alternatively, the first side end 2a can pivot about the second side end 2b to abut the box body 1. Because the buoyancy of the adjusting member 31b is greater than the weight, the cover 2 closes over the diversion port 12. The buoyancy of the adjusting member 31b is much greater than the weight of the cover 2 in water. When the box body 1 is in the first state, the cover 2 relies on the buoyancy of the adjusting member 31b to extend in the direction of gravity, and the cover 2 can now close over the diversion port 12. When the box body 1 is in the second state, the cover 2 relies on its own weight to cause the second side end 2b to pivot about the first side end 2a away from the box body 1.

[0069] Therefore, through the above-mentioned first side end 2a being pivotally connected to the box body 1, the second side end 2b is pivoted around the first side end 2a to be away from or against the box body 1, and the gravity of the adjusting member 31b is greater than the buoyancy, which not only increases the speed of the covering member 2 to close or open the guide port 12, but also makes it easier for the covering member 2 to autonomously change between the first state and the second state, reducing the use of drive components and saving costs.

[0070] Optionally, in this embodiment, the density of the adjusting member 31b is less than 1 kg / m 3 The density of the adjusting member 31b can be 0.9kg / m3, 0.8kg / m 3 , 0.64kg / m 3 , 0.54kg / m 3 , 0.1kg / m 3 etc., not limited here. That is, the density of the adjustment member 31b needs to be less than the density of water. When the box body 1 is in the first state, the cover member 2 is in an upright position due to the buoyancy of the adjustment member 31b, and the cover member 2 covers the diversion port 12. Furthermore, when the box body 1 is in the second state, the cover member 2 can open the diversion port 12 due to its own weight.

[0071] Thus, by limiting the density of the adjusting member 31b, it is easy to adjust the covering member 2 to quickly cover the guide port 12. The adjusting member 31b can be foam, plastic, or filled with other air bags, etc., which is not limited here. In this embodiment, the adjusting member 31b is foam.

[0072] More specifically, in this second embodiment, the filter assembly 10 further includes a movable member 32. The cover member 2 further includes an accommodating channel 22. The accommodating channel 22 is disposed between the first side end 2a and the second side end 2b. The centerline of the accommodating channel 22 intersects the plane of the first side end 2a or the second side end 2b. The movable member 32 is accommodated within the accommodating channel 22 and is movable along the accommodating channel 22.

[0073] During the change of the box body 1 from the first state to the second state, or during the change of the box body 1 from the second state to the first state, the movable member 32 is accommodated in the accommodating channel 22 and can move along the accommodating channel 22. The position change of the movable member 32 can change the center of gravity of the cover 2, so that the cover 2 can quickly cover or close the diversion port 12, thereby improving the wall climbing or climbing performance of the underwater cleaning equipment. Among them, the movable member 32 can be a rolling member (not shown in the figure). The rolling member rolls in the accommodating channel 22, which can reduce the friction between the rolling member and the accommodating channel 22, thereby being able to change the center of gravity of the cover 2 more quickly. The rolling member can be a ball. The ball density can be greater than 1kg / m 3 The size of the ball can be determined according to actual conditions and is not limited here.

[0074] The aforementioned accommodating channel 22 is disposed between the first side end 2a and the second side end 2b, with the centerline of the accommodating channel 22 intersecting the plane of the first side end 2a, i.e., the accommodating channel 22 is disposed near the first side end 2a. Alternatively, the accommodating channel 22 is disposed between the first side end 2a and the second side end 2b, with the centerline of the accommodating channel 22 intersecting the plane of the second side end 2b, i.e., the accommodating channel 22 is disposed near the second side end 2b. The accommodating channel 22 can be disposed at any angle at either the first side end 2a or the second side end 2b.

[0075] In some embodiments, the center line of the accommodating channel 22 intersects perpendicularly with the plane where the first side end 2a or the second side end 2b is located. The center line of the accommodating channel 22 intersects perpendicularly with the plane where the first side end 2a is located. Alternatively, the center of the accommodating channel 22 intersects perpendicularly with the plane where the second side end 2b is located. When the movable member 32 moves along the accommodating channel 22, the center of gravity can change from the first side end 2a to the second side end 2b, so that the center of gravity of the covering member 2 has a certain regularity, which is simple and easy to implement.

[0076] In some embodiments, the cover 2 includes an inner side surface 25 facing the first cavity 11. The accommodating channel 22 extends from the second side end 2b toward the direction close to the inner side surface 25 and toward the first side end 2a. The accommodating channel 22 extends from the second side end 2b toward the direction close to the inner side surface 25 and toward the first side end 2a at the same time. That is, the accommodating channel 22 is arranged at an angle. When the box body 1 is in the second state, the movable member 32 moves from the second side end 2b to the first side end 2a along the accommodating channel 22 in the inclined accommodating channel 22 due to gravity. At this time, the center of gravity of the cover 2 moves forward, so that the center of gravity of the cover 2 is greater than the buoyancy of the cover 2, thereby causing the cover 2 to open the guide port 12.

[0077] By changing the tilt direction of the accommodating channel 22 , the movement of the movable member 32 is facilitated, and the gravity of the center of gravity of the covering member 2 can be quickly changed, thereby enabling the covering member 2 to quickly open or close the guide port 12 .

[0078] Regardless of any of the above embodiments or any other specific embodiments, the cover 2 can be directly pivotally connected to the side wall of the box body 1. However, for stable and secure installation, the cover 2 can be indirectly pivotally connected to the side wall of the box body 1 through other mounting members, such as the mounting bracket 4.

[0079] In some embodiments, referring to Figures 1 to 12 , a mounting bracket 4 is disposed on a side wall of the housing 1 . The mounting bracket 4 covers the air guide opening 12 . The portion of the mounting bracket 4 covering the air guide opening 12 is provided with a plurality of grille holes 41 . The grille holes 41 communicate with the air guide opening 12 . The cover 2 is movably mounted on the mounting bracket 4 .

[0080] Specifically, the mounting bracket 4 can be removed or fixed on the side wall of the box body 1. During the process of installing the mounting bracket 4 to the side wall of the box body 1, the mounting bracket 4 covers the diversion port 12. The portion of the mounting bracket 4 covering the diversion port 12 is provided with a plurality of grille holes 41. The plurality of grille holes 41 are connected to the diversion port 12. At least part of the water in the first cavity 11 flows out through the diversion port 12 and the grille holes 41 in sequence. By providing the grille holes 41 on the mounting bracket 4, it is prevented that larger impurities (such as leaves) enter the pumping assembly after the cover 2 is opened and damage the impeller in the pumping assembly. The size and shape of the above-mentioned grille holes 41 are not limited, and can meet the actual use needs. As in the present embodiment, the grille holes 41 are square in shape.

[0081] Furthermore, the mounting bracket 4 can be detachably mounted on the side wall of the box body 1. The detachable manner can be a clamping, bolt fixing, plug-in and other methods. As in the present embodiment, a plurality of mounting portions 44 are provided on the periphery of the mounting bracket 4. The mounting portion 44 is provided with a mounting hole (not shown in the figure). The fixing member is fixed to the side wall of the box body 1 after passing through the mounting hole. In addition, a plurality of mounting clips 45 are provided on the periphery of the mounting bracket 4. The mounting clip 45 is plugged into and clamped to the side wall of the diversion port 12 from the diversion port 12. The mounting bracket 4 cooperates with each other through the above-mentioned mounting portion 44 and the mounting clip 45 to improve the stability of the mounting bracket 4 installed on the side wall of the box body 1, thereby improving the stability of the filter assembly 10. The setting position and quantity of the above-mentioned mounting bracket 4 and the mounting clip 45 can be determined according to actual conditions and are not limited here.

[0082] Furthermore, when the box body 1 is provided with a mounting bracket 4, the cover 2 can be movably mounted on the mounting bracket 4. That is, the cover 2 can be movably mounted on the box body 1. Alternatively, the cover 2 can be movably mounted on the mounting bracket 4. The movable method can be rotational. The cover 2 is rotatably connected to the mounting bracket 4.

[0083] In some more specific embodiments, a recessed accommodating cavity 42 is provided on a side of the mounting bracket 4 facing the first cavity 11. A pivoting groove 43 is provided in the sidewall of the accommodating cavity 42. The cover 2 is movably accommodated within the accommodating cavity 42. A pivoting portion 23 is provided protruding from the cover 2. A stop protrusion is provided below the pivoting portion 23. The pivoting portion 23 is pivotally mounted within the pivoting groove 43. The stop protrusion rotates with the cover 2 until it stops against the sidewall.

[0084] The accommodating cavity 42 is recessed on a side of the mounting bracket 4 facing the first cavity 11, and the accommodating cavity 42 can be used to accommodate the cover 2. The accommodating cavity 42 is connected to the pivot mounting groove 43. The pivot portion 23 is fixedly or detachably mounted on the cover 2. When the cover 2 is movably mounted in the accommodating cavity 42, the pivot portion 23 is pivotally mounted in the pivot mounting groove 43 to realize the rotation of the cover 2. A stop and limit protrusion is provided below the pivot portion 23. The pivot portion 23 and the stop and limit protrusion are detachably or fixedly connected. The stop and limit protrusion can play a stop and limit role. When the pivot portion 23 pivots, the stop and limit protrusion also rotates with the pivot portion 23. When the cover 2 rotates to a certain angle, the stop and limit protrusion stops on the side wall of the accommodating cavity 42, thereby stopping the cover 2 from rotating, thereby limiting the rotation angle of the cover 2.

[0085] The accommodating cavity 42, the pivoting mounting groove 43, the pivoting portion 23 and the stop-limiting protrusion cooperate with each other to limit the rotation angle of the cover 2, thereby preventing the cover 2 from rotating too much and causing the cover 2 to be adsorbed onto the side wall of the box body 1, thereby affecting the closing of the cover 2.

[0086] When the box body 1 is in the second state, the cover 2 can limit the angle between the cover 2 and the box body 1 through the above-mentioned stop limit protrusion and other related structures. Among them, the angle between the cover 2 and the box body 1 is greater than or equal to 30° and less than or equal to 100°. The angle between the cover 2 and the box body 1 can be 30°, 43°, 54°, 65°, 76°, 87°, 90°, 98°, 100°, etc., which are not limited here. By limiting the range of the angle between the cover 2 and the box body 1, it is not only convenient for at least part of the water in the first cavity 11 to flow out through the diversion port 12, thereby increasing the water output of the box body 1, but also reduces the risk of the cover 2 being adsorbed on the side wall of the box body 1. For example, in the present embodiment, when the box body 1 is in the first state, the stop limit protrusion limits the cover 2 to be vertically arranged with the box body 1, that is, the angle between the cover 2 and the box body 1 is 90°.

[0087] Optionally, in other embodiments, when the cover 2 pivots to the box body 1, structures such as the pivoting mounting groove 43, the pivoting portion 23, and the stop limit protrusion between the cover 2 and the mounting bracket 4 can also be arranged between the cover 2 and the box body 1, which are not described one by one here.

[0088] Optionally, an overlapping portion 24 extends from the edge of the cover 2. The overlapping portion 24 abuts against the inner side surface of the mounting bracket 4 when the cover 2 is accommodated in the accommodating cavity 42. The overlapping portion 24 is fixedly or detachably connected to the cover 2. The overlapping portion 24 is located at the edge of the cover 2. When the box body 1 is in the first state, the overlapping portion 24 of the cover 2 can abut against the inner side surface of the mounting bracket 4 when the cover 2 is accommodated in the accommodating cavity 42.

[0089] By the above method, the sealing performance of the cover 2 covering the guide port 12 is improved, and water is reduced from entering the box body 1 through the gap between the cover 2 and the mounting bracket 4, thereby affecting the cleaning efficiency of the underwater cleaning equipment.

[0090] In some actual application scenarios, the box body 1 of the filter assembly 10 provided in the embodiment of the present application is arranged in a square shape. The box body 1 includes a first side 1a, a second side 1b, a third side 1c and a fourth side 1d. The first side 1a and the second side 1b are arranged opposite to each other. The third side 1c and the fourth side 1d are arranged opposite to each other. The first side 1a is close to the front of the movement of the underwater cleaning equipment. The guide port 12 can be arranged at a position of at least one of the first side 1a, the second side 1b and the third side 1c. At least one of the first side 1a, the second side 1b and the third side 1c can be provided with one, two or more guide ports 12, etc., which are not limited here.

[0091] When the air guide port 12 is positioned at the second side surface 1b and the third side surface 1c, a pivot portion 23 is provided on the cover member 2. The pivot portion 23 is vertically disposed on the mounting bracket 4 or the side wall of the box body 1. Of course, in other embodiments, the cover member 2 may be configured in other ways, which are not limited here.

[0092] When the filter assembly 10 is provided with only one guide port 12, the guide port 12 can be provided with a first type of cover 2 having a density greater than 1 kg / m 3 Alternatively, a second cover member 2 having a density less than 1 kg / m 3 The adjusting member 31b and the moving member 32 are provided.

[0093] When the filter assembly 10 is provided with two guide ports 12, the first type of cover 2 with a density greater than 1 kg / m 3 Alternatively, the two guide ports 12 may both be provided with a second type of cover 2, the density of which is less than 1 kg / m 3 Alternatively, a first cover member 2 having a density greater than 1 kg / m is provided at a guide port 12. 3The second cover 2 is provided at the other guide port 12, with a density less than 1kg / m 3 The adjusting member 31b and the moving member 32 are provided.

[0094] When the filter assembly 10 is provided with three or more guide ports 12, the type of the cover member 2 at the guide port 12, the type of the adjustment member 31b, etc. can be determined according to actual conditions and will not be described in detail here.

[0095] In addition, the shape of the aforementioned guide port 12 can be regular or irregular. Regular shapes can be regular polygons, circles, etc. Irregular shapes can be arcs or combinations thereof. The shape of the cover 2 can be the same as or different from that of the guide port 12. When the shape of the cover 2 is different from that of the guide port 12 and the box body 1 is in the first state, the cover 2 only needs to cover the guide port 12, and its specific shape is not limited.

[0096] As will be appreciated, the cover member 2 of the filter assembly 10 provided in this embodiment of the present application also includes a second filter layer. When the cover member 2 is closed, the second filter layer filters impurities, preventing the cover member 2 from affecting the normal operation of the underwater cleaning equipment. The second filter layer can be positioned away from the adjustment members 31a and 31b; its specific location and form are not limited herein.

[0097] Another aspect of the embodiments of the present application further provides an underwater cleaning device 100. Please refer to Figures 13, 14, and 15. Figure 13 is a partial schematic diagram of an embodiment of the underwater cleaning device of the present application; Figure 14 is a partial exploded schematic diagram of an embodiment of the underwater cleaning device of the present application; and Figure 15 is a partial cross-sectional schematic diagram of an embodiment of the underwater cleaning device of the present application. In conjunction with Figures 1 to 8, in some embodiments, the underwater cleaning device 100 includes a filter assembly 10. The filter assembly 10 is the filter assembly 10 described in the above embodiments and will not be described in detail here.

[0098] Specifically, the underwater cleaning device 100 also includes a dust bin 20. The dust bin 20 defines a second cavity 201. The filter assembly 10 is disposed within the second cavity 201. The second cavity 201 is in communication with the first cavity 11 of the housing 1 within the filter assembly 10. For example, the second cavity 201 can be in communication with the first cavity 11 via the first filter layer and the diversion port 12. A water inlet 13 is formed between the housing 1 and the dust bin 20. The water inlet 13 is in communication with the first cavity 11. In other words, water enters the first cavity 11 through the water inlet 13.

[0099] The underwater cleaning device 100 further includes a pumping assembly 30. The pumping assembly 30 is disposed outside the dust bin 20. The pumping assembly 30 is connected to the dust bin 20. That is, the pumping assembly 30 is connected to the second cavity 201.

[0100] When the underwater cleaning equipment 100 is placed in the pool, the pumping assembly 30 is used to guide the water in the pool to enter the first cavity 11 through the water inlet 13, and then flow into the second cavity 201 after being filtered through the first filter layer, and then the water flows into the pumping assembly 30 through the second cavity 201.

[0101] When the housing 1 of the filter assembly 10 is in the first state, the cover 2 covers the diversion port 12. The pump assembly 30 is used to guide water into the pump assembly 30 from the water inlet 13, the first cavity 11, the first filter layer, and the second cavity 201 in sequence. Specifically, the pump assembly 30 guides water from the pool into the first cavity 11 from the water inlet 13. Water in the first cavity 11 flows through the first filter layer of the housing 1 into the second cavity 201, and then flows through the second cavity 201 into the pump assembly 30. The first state is the state of the housing 1 when the underwater cleaning apparatus 100 is moving perpendicular to gravity.

[0102] When the housing 1 of the filter assembly 10 is in the second state, the cover 2 opens the diversion port 12. The pump assembly 30 is configured to guide at least a portion of the water into the pump assembly 30, sequentially from the water inlet 13, the first cavity 11, the diversion port 12, and the second cavity 201. Specifically, the pump assembly 30 is configured to guide the water in the pool from the water inlet 13 into the first cavity 11. At least a portion of the water in the first cavity 11 flows directly into the second cavity 201 through the diversion port 12. Some water can also flow through the first filter layer into the second cavity 201, and then through the second cavity 201 into the pump assembly 30.

[0103] Therefore, the underwater cleaning equipment 100 can reduce the impact on the cleaning effect by using the above-mentioned filter component 10, and can also always meet the water intake requirement of the pump suction component 30, thereby maintaining stable wall climbing or climbing performance.

[0104] In one embodiment, the cover 2 is further provided with a second filter layer (not shown in the figure). The second filter layer is respectively connected to the first cavity and the second cavity. The second filter layer plays a filtering role. When the filter assembly 10 is in the first state, the cover 2 covers the diversion port 12. The water in the pool can enter the first cavity 11 through the water inlet 13. The water in the first cavity 11 flows into the second cavity 201 through the first filter layer on the box body 1 and the second filter layer on the cover 2, and then the water flows into the pump suction assembly 30 through the second cavity 201. Therefore, by arranging the second filter layer on the cover 2, the cleaning efficiency of the underwater cleaning equipment 100 can be improved. Among them, the structure of the second filter layer may be the same as or different from the structure of the first filter layer, which is not limited here.

[0105] In one embodiment, the pump assembly 30 includes an impeller guard 301. The area of ​​the diversion port 12 of the filter assembly 10 is larger than the water inlet cross-sectional area of ​​the impeller guard 301. This increases the water outlet area of ​​the filter assembly 10, ensuring that the water outflow from the filter assembly 10 exceeds the water inflow of the pump assembly 30. This ensures that the water inflow requirement of the pump assembly 30 is always met during wall or slope climbing, thereby maintaining stable wall or slope climbing performance.

[0106] The pump assembly 30 also includes an impeller 302 and a water pump motor 303. The output end of the water pump motor 303 is connected to the impeller 302. The water pump motor 303 drives the impeller 302 to rotate within the impeller housing 301. The water pump motor 303 in the pump assembly 30 drives the impeller 302 to rotate, causing water to flow into the impeller 302, increasing the water output of the filter assembly 10 and thereby improving the cleaning efficiency of the underwater cleaning device 100 for wastewater in the pool.

[0107] The terms "first", "second" and "third" in this application are only used for descriptive purposes and should not be understood as indicating the number of the indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, movement, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0108] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A filter assembly, applied to an underwater cleaning device, comprising: A box body, wherein the box body is formed with a first cavity and a guide port communicating with the first cavity; The box body includes a first state and a second state; A first filter layer is disposed on a side wall of the box body, and the first filter layer is connected to the first cavity; a covering member, the covering member being mounted on the box body, wherein in the first state, the covering member covers the guide port; In the second state, the covering member opens the air guide port.

2. The filter assembly according to claim 1, wherein: The cover is pivotally connected to the box body; The filter assembly further comprises an adjusting member mounted on the cover member, wherein the adjusting member is away from a pivotal connection between the cover member and the box body; The adjusting member assists the covering member in closing or opening the guide port.

3. The filter assembly according to claim 2, wherein: The cover member comprises a first side end and a second side end which are arranged opposite to each other; the first side end is located at the uppermost end of the cover member, and the second side end is located at the lowermost end of the cover member; The first side end is pivotally connected to the box body, and the second side end is pivotally connected around the first side end to open or close the diversion port, and when the filter assembly is entirely underwater, the gravity of the adjustment member is greater than the buoyancy; or, The second side end is pivotally connected to the box body, and the first side end pivots around the second side end to open or close the diversion port. When the filter assembly is entirely located underwater, the buoyancy of the adjusting member is greater than the gravity.

4. The filter assembly according to claim 3, wherein: The first side end is pivotally connected to the box body, and the density of the adjusting member is greater than 1 kg / m 3 .

5. The filter assembly according to claim 3, wherein: The first side end is pivotally connected to the box body, and a ratio of a distance from a center of the adjusting member to the first side end to a distance from a center of the adjusting member to the second side end is less than 1.

6. The filter assembly according to claim 3, wherein: The first side end is pivotally connected to the box body, the adjusting member is protruding from the inner side of the covering member facing the first cavity, and when the box body is in the first state, a line connecting the center of gravity of the adjusting member and the pivot center of the covering member forms an acute angle with the direction of gravity.

7. The filter assembly according to claim 3, wherein: The second side end is pivotally connected to the box body, and the density of the adjusting member is less than 1 kg / m 3 .

8. The filter assembly according to claim 3 or 6, wherein: The second side end is pivotally connected to the box body, and the filter assembly further includes a moving member; The cover member further includes a receiving channel, the receiving channel is arranged between the first side end and the second side end, and a center line of the receiving channel intersects with a plane where the first side end or the second side end is located; The moving member is accommodated in the accommodating channel and can move along the accommodating channel.

9. The filter assembly according to claim 8, wherein: The center line of the accommodating channel intersects perpendicularly with the plane where the first side end or the second side end is located.

10. The filter assembly according to claim 8, wherein: The covering member includes an inner side surface facing the first cavity; The accommodating channel extends from the second side end toward the first side end in a direction close to the inner side surface.

11. The filter assembly according to claim 8, wherein: The moving part is a rolling part.

12. The filter assembly according to claim 1, wherein: A mounting bracket is provided on the side wall of the box body, and the mounting bracket covers the air guide port; a portion of the mounting bracket covering the air guide port is provided with a plurality of grille holes, and the grille holes are connected to the air guide port; and the cover is movably mounted on the mounting bracket.

13. The filter assembly according to claim 12, wherein: A side surface of the mounting bracket facing the first cavity is concavely provided with an accommodating cavity, and a side wall of the accommodating cavity is provided with a pivoting mounting groove; the covering member is movably accommodated in the accommodating cavity, and a pivoting portion is convexly provided on the covering member, and a stopper and limiting protrusion is provided below the pivoting portion; The pivoting portion is pivotally mounted in the pivoting mounting groove, and the stop limiting protrusion rotates with the covering member until it stops on the side wall.

14. The filter assembly according to claim 13, wherein: An overlapping portion is further extended from the edge of the covering member, and the overlapping portion abuts against the inner side surface of the mounting bracket when the covering member is accommodated in the accommodating cavity.

15. The filter assembly according to claim 1, wherein: The flow guide port includes a plurality of flow guide sub-ports.

16. The filter assembly according to claim 1, wherein: The box body includes a first side surface, a second side surface, a third side wall and a fourth side surface. The first side surface and the second side surface are arranged opposite to each other, the third side surface and the fourth side surface are arranged opposite to each other, and the air guide port is arranged on at least one of the first side surface, the second side surface and the third side surface.

17. The filter assembly according to claim 1, wherein: The filter assembly includes a driving assembly, which is connected to the covering member and is used to drive the covering member to cover or open the guide port.

18. An underwater cleaning device comprising: The filter assembly according to any one of claims 1 to 17; A dust bin is formed with a second cavity, the filter assembly is arranged in the second cavity, the second cavity is communicated with the first cavity of the box body of the filter assembly, a water inlet is formed between the box body and the dust bin, and the water inlet is communicated with the first cavity; A pumping assembly is disposed outside the dust bin, and the pumping assembly is communicated with the second cavity; When the box body of the filter assembly is in a first state, the pump assembly is used to guide water to flow into the pump assembly from the water inlet, the first cavity, the first filter layer and the second cavity in sequence, wherein the first state is the state of the box body when the underwater cleaning device moves in a direction perpendicular to gravity; When the box body of the filter assembly is in the second state, the pump assembly is used to guide at least part of the water to flow into the pump assembly from the water inlet, the first cavity, the guide port and the second cavity in sequence.

19. The underwater cleaning device according to claim 18, wherein: The cover member is provided with a second filter layer. When the filter assembly is in the first state, the second filter layer is communicated with the first cavity and the second cavity respectively.

20. The underwater cleaning device of claim 18, wherein: The pump suction assembly includes an impeller cover, and the area of ​​the guide port of the filter assembly is larger than the water inlet cross-sectional area of ​​the impeller cover.

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