Filtering device and cleaning robot

Abstract

The embodiment of the utility model provides a filtering device and a cleaning robot. The cleaning robot comprises a machine body, a water pump and a filtering device, the water pump is used for sucking to-be-cleaned liquid outside the machine body into the filtering device, and the water pump is further used for discharging cleaning liquid from the water outlet. The filtering device comprises a first filtering unit and a second filtering unit, and the first filtering unit is provided with a plurality of first filtering holes; the second filtering unit is detachably connected to the first filtering unit and provided with a plurality of second filtering holes, and the size of the second filtering holes is smaller than that of the first filtering holes. According to the scheme of the embodiment of the invention, large-particle garbage can be firstly collected through the first filtering unit, then small-particle garbage is collected through the second filtering unit, the large-particle garbage can be effectively prevented from blocking meshes of the second filtering unit, and then the cleaning effect and the working efficiency of the cleaning robot are guaranteed.

Description

Technical Field

[0001] This application relates to the field of robotics, and more particularly to a filtration device and a cleaning robot. Background Technology

[0002] Existing cleaning robots are widely used for underwater cleaning, such as cleaning the bottom and walls of swimming pools. However, during the cleaning process, if the cleaning robot sucks in large debris, it can easily clog the filter screen. This clogging reduces the water flow rate, leading to a series of negative consequences. First, the reduced water flow rate results in insufficient ground pressure, affecting its normal operation and movement efficiency. Second, the water flow rate at the suction port will also be slowed down due to filter clogging, further reducing the robot's cleaning effectiveness and efficiency. Utility Model Content

[0003] This application provides a filtration device and a cleaning robot. The filtration device includes a first filter unit and a second filter unit detachably fitted onto the first filter unit. The mesh size of the first filter unit is larger than that of the second filter unit. This reduces the risk of the filter mesh becoming clogged, improves the waste collection efficiency of the filtration device, and thus ensures the cleaning effect and work efficiency of the cleaning robot.

[0004] In a first aspect, embodiments of this application propose a filtration device for a cleaning robot. The filtration device includes a first filtration unit and a second filtration unit. The first filtration unit includes a first main body and a first filter part, which together form a first storage cavity. The first main body has a first suction port communicating with the first storage cavity, and the first filter part has a plurality of first filter holes. The second filtration unit is located inside the first storage cavity and is detachably connected to the first filtration unit. The second filtration unit includes a second main body and a second filter part. The second main body has a second suction port communicating with the second storage cavity, which together form a second storage cavity. The second filter part has a plurality of second filter holes, the size of which is smaller than the size of the first filter holes.

[0005] By incorporating a first filter unit and a second filter unit detachably fitted onto the first filter unit within a filtration device, wherein the size of the first filter pore in the first filter unit is larger than the size of the second filter pore, the cleaning robot operates as follows: First, the first filter unit is installed separately onto the cleaning robot. The first filter unit draws in the liquid to be cleaned, carrying larger particles, through its first suction port. These larger particles are blocked by the first filter pores and remain in the first collection chamber, while the cleaning liquid is discharged from the first collection chamber through the first filter pores. After the larger particles are removed, the second filter unit is placed inside the first filter unit. The second filter unit draws in the liquid to be cleaned, carrying smaller particles, through its second suction port. These smaller particles are blocked by the second filter pores and remain in the second collection chamber, while the cleaning liquid is discharged from the second collection chamber through the second filter pores. This reduces the risk of the first and second filter pores of the filtration device becoming clogged by larger particles, allowing the cleaning liquid to continuously flow into the filtration device and improving its waste collection efficiency.

[0006] In one possible implementation, the first main body is provided with a groove, the opening of which faces away from the first receiving cavity. A first suction port is located in the groove, and a second suction port surrounds the side wall of the groove. By placing the first suction port in the groove and the second suction port surrounding the outer wall of the groove, the first filter unit and the second filter unit can share the first suction port located in the groove. Furthermore, since the second main body is located within the first receiving cavity, the second suction port surrounding the outer wall of the groove means that the opening of the groove faces away from the first receiving cavity; that is, the groove protrudes into the first receiving cavity, and the bottom and side walls of the groove are located within the first receiving cavity. This allows particulate contaminants entering the first and second receiving cavities to be blocked by the groove protruding into the first receiving cavity, reducing the risk of secondary pollution caused by the re-flow of filtered particulate contaminants from the first and second suction ports during the cleaning process, thus improving the waste collection efficiency of the filtration device.

[0007] In one possible implementation, the first suction port is located on the bottom wall of the groove, so that particulate pollutants entering the first and second collection chambers can be effectively blocked by the side walls of the groove. This reduces the risk of secondary pollution caused by particulate pollutants that have been filtered out during the cleaning process flowing out of the first and second suction ports again, thereby improving the waste collection effect of the filtration device.

[0008] In one possible implementation, the first main body includes a first bottom wall, and the second main body includes a second bottom wall, which abuts against the first bottom wall. A first suction port is located on the first bottom wall, and a second suction port is located on the second bottom wall. The second suction port covers at least part of the first suction port. This allows most of the liquid to be cleaned entering through the first suction port to enter the second collection chamber through the second suction port when it is necessary to remove smaller particles from the liquid to be cleaned through the second filter unit. Only a very small amount of liquid to be cleaned will flow into the first collection chamber. This allows most of the smaller particles to be removed from the liquid to be cleaned by the second filter holes of the second filter unit, improving the waste collection effect of the filtration device.

[0009] In one possible implementation, the first filtration unit further includes a baffle located within the first receiving cavity. The baffle is rotatably positioned at the first suction port and is used to open or close the first suction port. When the cleaning robot is operating, the liquid to be cleaned, drawn by the water pump, can breach the baffle and enter the first and / or second receiving cavities through the first suction port. When the cleaning robot stops operating, the baffle closes the first suction port and seals the particulate contaminants in the first and / or second receiving cavities, preventing the particulate contaminants from flowing out and causing secondary pollution, thus improving the waste collection efficiency of the filtration device.

[0010] In one possible implementation, one of the first main body and the second main body is provided with a snap-fit ​​component, and the other of the first main body and the second main body is provided with a snap-fit ​​groove. The first main body and the second main body are detachably connected by the snap-fit ​​component and the snap-fit ​​groove, so that the second filter unit can be quickly installed on or removed from the first filter unit. This facilitates the separate cleaning of particulate pollutants from the first filter unit or the second filter unit, which is beneficial for a new round of waste collection and improves the waste collection effect of the filtration device.

[0011] In one possible implementation, the second main body is provided with a protrusion near the snap-fit ​​member or snap-fit ​​groove. When the second filter unit is fitted onto the first filter unit, as the snap-fit ​​member extends into the snap-fit ​​groove to engage with each other, the protrusion can abut against the first main body of the first filter unit, so that the second filter unit is securely fitted onto the first filter unit, which is beneficial to ensuring the garbage collection effect of the filter device.

[0012] In one possible implementation, the filtration device further includes a flip cover, which is rotatably disposed at the opening of the first filtration unit. The flip cover is used to open or close the opening. When the cleaning robot is working, the flip cover closes the opening of the first filtration unit to prevent the liquid to be cleaned in the first and second collection chambers from flowing out of the opening. When the cleaning robot stops working, the flip cover can be lifted to remove the second filtration unit, and the first and second filtration units can be cleaned. The operation is simple and quick, which is conducive to a new round of garbage collection and improves the garbage collection effect of the filtration device.

[0013] In one possible implementation, the first filter section is disposed on the peripheral wall of the first main body and the second filter section is disposed on the peripheral wall of the second main body. This maximizes the contact area between the first filter section and the liquid to be cleaned in the first receiving cavity, and also maximizes the contact area between the second filter section and the liquid to be cleaned in the second receiving cavity. This is beneficial to improving the cleaning efficiency of the first filter unit and the second filter unit, and ultimately improving the waste collection effect of the filtration device.

[0014] Secondly, embodiments of this application propose a cleaning robot, including the filtration device described in the first aspect.

[0015] By incorporating the filtration device described in the first aspect into the cleaning robot, the risk of the first and second filter holes of the filtration device being clogged by larger particles can be reduced, allowing the liquid to be cleaned to continuously flow into the filtration device, thereby improving the waste collection effect of the filtration device and enabling the cleaning robot to obtain sufficient ground pressure, thus ensuring the cleaning effect and work efficiency of the cleaning robot. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the cleaning robot provided in the embodiments of this application;

[0017] Figure 2 This is a schematic diagram of the structure of the filtering device provided in the embodiments of this application;

[0018] Figure 3 This is a schematic diagram of the structure of the filtering device provided in the embodiments of this application from another perspective;

[0019] Figure 4 yes Figure 2 A schematic diagram of a partial cross-sectional structure of the filter device shown.

[0020] Figure 5 This is a schematic diagram of the structure of a filter device without baffles provided in an embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the structure of a filter device without a flip cover provided in an embodiment of this application;

[0022] Figure 7 This is an exploded view of the filtering device provided in the embodiments of this application;

[0023] Figure 8 This is a schematic diagram of the structure of the first filtering unit provided in an embodiment of this application;

[0024] Figure 9 This is a schematic diagram of the structure of the second filtering unit provided in the embodiments of this application.

[0025] Figure Labels

[0026] 1-Filtering device; 2-First filtering unit; 21-First main body; 211-First suction port; 212-Groove; 2121-Groove sidewall; 2122-Groove bottom wall; 213-First bottom wall; 22-First filtering section; 221-First filter hole; 23-First storage cavity; 24-First snap-fit ​​groove; 25-Second snap-fit ​​piece; 26-Opening; 3-Second filtering unit; 31-Second main body; 311-Second suction port; 312-Second bottom wall; 32-Second filtering section; 321-Second filter hole; 33-Second storage cavity; 34-First snap-fit ​​piece; 4-Baffle; 5-Flip cover; 51-Second snap-fit ​​groove; 6-Handle; 7-Suction channel; 10-Cleaning robot; 11-Body; 111-Outlet; 12-Water pump. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The directional terms used in the embodiments of this application, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," "top," and "bottom," are merely for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0028] Existing cleaning robots are widely used for underwater cleaning, such as cleaning the bottom and walls of swimming pools. However, during the cleaning process, if the cleaning robot sucks in large debris, it can easily clog the filter screen. This clogging reduces the water flow rate, leading to a series of negative consequences. First, the reduced water flow rate results in insufficient ground pressure, affecting its normal operation and movement efficiency. Second, the water flow rate at the suction port will also be slowed down due to filter clogging, further reducing the robot's cleaning effectiveness and efficiency.

[0029] Figure 1This is a schematic diagram of the structure of a cleaning robot 10 provided in an embodiment of this application. The cleaning robot 10 may include a body 11, a water pump 12, and a filter device 1. Both the filter device 1 and the water pump 12 are located inside the body 11. The water pump 12 can be used to draw liquid to be cleaned from outside the body 11, such as water from a swimming pool, into the filter device 1. The filter device 1 can be used to filter the liquid to be cleaned and collect particulate contaminants removed from the liquid. The body 11 has a water outlet 111. Under the action of the water pump 12, the filter device 1 can discharge the cleaning liquid outward from the water outlet 111 through the water outlet channel inside the body 11.

[0030] Figure 2 This is a schematic diagram of the structure of the filtering device 1 provided in the embodiments of this application. Figure 3 This is a schematic diagram of the filter device 1 provided in an embodiment of this application from another perspective. Figure 4 yes Figure 2 The diagram shows a partial cross-sectional view of the filter device 1. Figure 5 This is a schematic diagram of the structure of the filter device 1 without the baffle 4 provided in the embodiment of this application. Figure 7 This is an exploded view of the filtering device 1 provided in the embodiments of this application, combined with... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 7 As shown, the filtration device 1 includes a first filtration unit 2 and a second filtration unit 3, with the second filtration unit 3 detachably connected to the first filtration unit 2. The first filtration unit 2 includes a first main body 21 and a first filtration section 22. Schematably, the first main body 21 can be a basket-shaped frame structure, and the first filtration section 22 can be a sheet-like filter structure. The sheet-like first filtration section 22 can wrap around the periphery of the first main body 21, thereby forming a first receiving cavity 23. The first filtration section 22 has multiple first filter holes 221, which can be used to filter the liquid to be cleaned, i.e., intercepting particulate contaminants larger than the size of the first filter holes 221 in the liquid to be cleaned, thus removing the particulate contaminants from the liquid to be cleaned. It should be noted that... Figure 2 and Figure 3 The size of the first filter hole 221 shown is merely for illustrative purposes. In other embodiments, the proportion of the first filter hole 221 to the first filter section 22 can be much smaller. Figure 2 and Figure 3As shown, multiple first filter holes 221 can be densely distributed on the first filter section 22. The first receiving cavity 23 can be connected to the water outlet 111 of the body 11 through the first filter holes 221, so that the filtered cleaning liquid can flow sequentially through the first filter holes 221, the water outlet channel inside the body 11, and the water outlet 111 under the action of the water pump 12, and finally be discharged to the outside of the body 11. The first main body 21 has a first suction port 211 connected to the first receiving cavity 23. The first suction port 211 is used to open when the cleaning robot 10 is working, so that the first receiving cavity 23 is connected to the outside of the body 11 of the cleaning robot 10 through the first suction port 211, so that the liquid to be cleaned can enter the first receiving cavity 23 through the first suction port 211 under the action of the water pump 12. The first suction port 211 is also used to close when the cleaning robot 10 stops working, so as to prevent particulate pollutants in the first receiving cavity 23 from flowing out of the first suction port 211 and causing secondary pollution to the external environment.

[0031] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 7 As shown, the second filter unit 3 can be located within the first receiving cavity 23. The second filter unit 3 includes a second main body 31 and a second filter part 32. Schematic, the second main body 31 can be a basket-shaped frame structure, and the second filter part 32 can be a sheet-like filter structure. The sheet-like second filter part 32 can wrap around the periphery of the second main body 31, thereby forming the second receiving cavity 33. The second main body 31 has a second suction port 311 communicating with the second receiving cavity. Since the second suction port 311 is located within the first receiving cavity 23, the liquid to be cleaned can sequentially enter the second receiving cavity 33 through the first suction port 211 and the second suction port 311 under the action of the water pump 12. When the first suction port 211 is closed, particulate pollutants in the second receiving cavity 33 can be prevented from flowing out and causing secondary pollution to the external environment. The second filter section 32 has a plurality of second filter holes 321, which can be used to filter the liquid to be cleaned, that is, to intercept particulate contaminants in the liquid to be cleaned that are larger than the size of the second filter holes 321, so that the particulate contaminants are removed from the liquid to be cleaned. It should be noted that Figure 4 The size of the second filter hole 321 shown is merely for illustrative purposes. In other embodiments, the proportion of the second filter hole 321 to the second filter section 32 can be much smaller. Figure 4As shown, multiple second filter holes 321 can be densely distributed on the second filter section 32. The second receiving cavity 33 can be connected to the first receiving cavity 23 through the second filter holes 321, and then the second receiving cavity 33 can be connected to the water outlet 111 of the body 11, so that the filtered clean liquid can flow sequentially through the second filter holes 321, the first filter holes 221, the water outlet channel inside the body 11 and the water outlet 111 under the action of the water pump 12, and finally be discharged to the outside of the body 11.

[0032] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 7 As shown in the embodiment of this application, the size of the second filter hole 321 is smaller than the size of the first filter hole 221. Since the second filter unit 3 is detachably connected to the first filter unit 2, during the use of the cleaning robot 10, the first filter unit 2 can be installed separately on the cleaning robot 10 first. The first filter unit 2 sucks up the liquid to be cleaned carrying larger particles through the first suction port 211. The larger particles are blocked by the first filter hole 221 and remain in the first receiving cavity 23, while the cleaning liquid is discharged from the first receiving cavity 23 through the first filter hole 221. After the larger particles in the first filter unit 2 are cleaned, the second filter unit 3 is then fitted inside the first filter unit 2. The second filter unit 3 sucks up the liquid to be cleaned carrying smaller particles through the second suction port 311. The smaller particles are blocked by the second filter hole 321 and remain in the second receiving cavity 33, while the cleaning liquid is discharged from the second receiving cavity 33 through the second filter hole 321. This reduces the risk of the first filter hole 221 and the second filter hole 321 of the filter device 1 being blocked by larger particles, allowing the liquid to be cleaned to continuously flow into the filter device 1 under the action of the water pump 12, thereby improving the waste collection effect of the filter device 1.

[0033] Combination Figure 2 and Figure 4 As shown, in one possible implementation, the first filter section 22 can be disposed on the peripheral wall of the first main body section 21, that is, the sheet-like first filter section 22 can surround and wrap around the periphery of the first main body section 21. This maximizes the contact area between the first filter section 22 and the liquid to be cleaned in the first receiving cavity 23, which is beneficial to improving the cleaning efficiency of the first filter unit 2. The second filter section 32 can be disposed on the peripheral wall of the second main body section 31, that is, the sheet-like second filter section 32 can surround and wrap around the periphery of the second main body section 31. This maximizes the contact area between the second filter section 32 and the liquid to be cleaned in the second receiving cavity 33, which is beneficial to improving the cleaning efficiency of the second filter unit 3. All of the above are beneficial to improving the waste collection effect of the filter device 1.

[0034] Combination Figure 4 and Figure 7 As shown, in one possible implementation, the first main body 21 includes a first bottom wall 213, and the second main body 31 includes a second bottom wall 312, which abuts against the first bottom wall 213; the first suction port 211 is located on the first bottom wall 213, and the second suction port 311 is located on the second bottom wall 312. The second suction port 311 covers at least part of the first suction port 211, which allows most of the liquid to be cleaned entering from the first suction port 211 to enter the second receiving cavity 33 through the second suction port 311 when it is necessary to remove smaller particles of the liquid to be cleaned through the second filter unit 3. Since the second bottom wall 312 abuts against the first bottom wall 213, the channel for the liquid to be cleaned to enter the first receiving cavity 23 is blocked by the second bottom wall 312. No or only a very small amount of the liquid to be cleaned can flow into the first receiving cavity 23. As a result, most of the smaller particles can be removed from the liquid to be cleaned by the second filter hole 321 of the second filter unit 3, and will not pass through the larger first filter hole 221 of the first filter unit 2 and be discharged again, causing secondary pollution. This improves the waste collection effect of the filtration device.

[0035] Combination Figure 2 and Figure 7 As shown, in one possible implementation, the filter device 1 further includes a flip cover 5, which is rotatably disposed at the opening 26 of the first filter unit 2. The flip cover 5 can be opened or closed by pulling on the handle 6 disposed on it. An operating groove can be provided on the side of the flip cover 5 facing the handle 6, allowing the handle 6 to be subjected to an upward pulling force from the outside, facilitating easy and quick opening of the flip cover 5. When the cleaning robot is working, the flip cover 5 closes the opening 26 of the first filter unit 2 to prevent the liquid to be cleaned from the first and second collection chambers 23 from flowing out of the opening 26. When the cleaning robot stops working, the second filter unit 3 can be removed by lifting the flip cover 5 with the handle 6, and the first and second filter units 2 and 3 can be cleaned. The operation is simple and quick, facilitating a new round of waste collection and improving the waste collection efficiency of the filter device.

[0036] Figure 6 This is a schematic diagram of the structure of the filter device 1 without the flip cover 5 provided in the embodiment of this application, combined with... Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, in one possible implementation, the first filter unit 2 further includes a baffle 4 and an elastic element. The baffle 4 is located within both the first receiving cavity 23 and the second receiving cavity 33. The baffle 4 is rotatably disposed at the first suction port 211 of the first main body 21. At least a portion of the baffle 4 is elastically connected to the first bottom wall 213 via the elastic element, which allows the baffle 4 to be used to automatically open or close the first suction port 211. Illustratively, the elastic element can be a torsion spring. When the first filter unit 2 is installed separately on the cleaning robot, the liquid to be cleaned, drawn by the water pump, can push open the baffle 4 and enter the first receiving cavity 23 through the first suction port 211. When the cleaning robot stops working, under the elastic restoring force of the elastic element, the baffle 4 resets to cover the first suction port 211 and seals the particulate pollutants in the first collection chamber 23, preventing the particulate pollutants from flowing out and causing secondary pollution. When the second filter unit 3 is fitted onto the first filter unit 2 and installed together with the cleaning robot, the liquid to be cleaned, drawn by the water pump, can push open the baffle 4 and enter both the first collection chamber 23 and the second collection chamber 33 through the first suction port 211, or only enter the second collection chamber 33. When the cleaning robot stops working, under the elastic restoring force of the elastic element, the baffle 4 resets to cover the first suction port 211 and seals the particulate pollutants in the filter device, preventing the particulate pollutants from flowing out and causing secondary pollution. This improves the waste collection efficiency of the filter device.

[0037] Combination Figure 4 , Figure 5 and Figure 7As shown, in one possible implementation, the first main body 21 is provided with a groove 212. The opening of the groove 212 is away from the first receiving cavity 23, that is, the groove 212 protrudes into the first receiving cavity 23. The bottom wall 2122 and the side wall 2121 of the groove 212 are both located within the first receiving cavity 23. The first suction port 211 is provided in the groove 212. In this embodiment, the position of the first suction port 211 on the groove 212 is not limited. That is, the first suction port 211 can be located on the side wall 2121 of the groove 212, or it can be located partially on the side wall 2121 and partially on the bottom wall 2122. The second suction port 311 surrounds the side wall 2121 of the groove 212. When the second filter unit 3 is sleeved on the first filter unit 2, the bottom wall 2122 and the side wall 2121 of the groove 212 are also both located within the second receiving cavity 33. By placing the first suction port 211 in the groove 212 and the second suction port 311 surrounding the side wall 2121 of the groove 212, the first filter unit 2 and the second filter unit 3 can share the first suction port 211 located in the groove 212. When the first filter unit 2 is installed on the cleaning robot alone, the liquid to be cleaned can enter the first storage cavity 23 through the first suction port 211; when the second filter unit 3 is fitted onto the first filter unit 2 and installed together with it on the cleaning robot, the liquid to be cleaned can enter the second storage cavity 33 through the first suction port 211. Furthermore, particulate contaminants entering the first storage cavity 23 and the second storage cavity 33 can be blocked by the groove 212, which can reduce the secondary pollution caused by the re-flow of particulate contaminants filtered out during the cleaning process from the first suction port 211 and the second suction port 311, thereby improving the waste collection effect of the filtration device.

[0038] Combination Figure 4 and Figure 5 As shown, in one possible implementation, the baffle 4 is rotatably disposed in the groove 212 of the first main body 21 to open or close the first suction port 211 located in the groove 212.

[0039] Combination Figure 4 , Figure 5 and Figure 7As shown, in one possible implementation, the first suction port 211 is located on the bottom wall 2122 of the groove 212, so that particulate pollutants entering the first collection cavity 23 and the second collection cavity 33 can be effectively blocked by the side wall 2121 of the groove 212. This reduces the risk of secondary pollution caused by particulate pollutants that have been filtered out during the cleaning process flowing out of the first suction port 211 and the second suction port 311 again, thus improving the waste collection effect of the filtration device. In addition, the baffle 4 is located at the bottom wall 2122 in this embodiment. This allows the baffle 4 to be subjected to a stronger impact from the liquid to be cleaned when the water pump draws the liquid to be cleaned. This allows the baffle 4 to quickly overcome the elastic resistance of the elastic element and open the first suction port 211, allowing the liquid to be cleaned to enter the first collection cavity 23 or the second collection cavity 33 for filtration, thereby improving the cleaning efficiency of the cleaning robot.

[0040] Figure 8 This is a schematic diagram of the structure of the first filtering unit 2 provided in the embodiments of this application. Figure 9 This is a schematic diagram of the structure of the second filtering unit 3 provided in the embodiments of this application, combined with... Figure 7 , Figure 8 and Figure 9 As shown, in one possible implementation, one of the first main body portion 21 and the second main body portion 31 may be provided with a snap-fit ​​member, and the other of the first main body portion 21 and the second main body portion 31 may be provided with a snap-fit ​​groove. The first main body portion 21 and the second main body portion 31 are detachably connected via the snap-fit ​​member and the snap-fit ​​groove. Illustratively, the second filter unit 3 may be provided with a first snap-fit ​​member 34, which may be located either in the second main body portion 31 or in the second filter portion 32. The first filter unit 2 may be provided with a first snap-fit ​​groove 24 and a second snap-fit ​​member 25, which may be located either in the first main body portion 21 or in the first filter portion 22. The flip cover 5 is provided with a second snap-fit ​​groove 51. The first snap-fit ​​member 34 is fastened to the first snap-fit ​​groove 24, and the second snap-fit ​​member 25 is fastened to the second snap-fit ​​groove 51. This allows the second filter unit 3 to be quickly installed on or removed from the first filter unit 2, and the flip cover 5 to be quickly installed on or removed from the second filter unit 3, facilitating the separate cleaning of particulate pollutants from the first filter unit 2 or the second filter unit 3, which is beneficial for a new round of waste collection and improves the waste collection effect of the filtration device.

[0041] Combination Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, in one possible implementation, the second main body 31 is provided with a protrusion 35. When a snap-fit ​​member is provided on the second main body 31, the protrusion 35 is close to the snap-fit ​​member; when a snap-fit ​​groove is provided on the second main body 31, the protrusion 35 is close to the snap-fit ​​groove. (Illustrative example, as shown...) Figure 9 As shown, the protrusion 35 is close to the first snap-fit ​​member 34. When the second filter unit 3 is fitted onto the first filter unit 2, as the first snap-fit ​​member 34 extends into the first snap-fit ​​groove 24 and engages with each other, the protrusion 35 can abut against the first main body 21 of the first filter unit 2, so that the second filter unit 3 is securely fitted onto the first filter unit 2, which is beneficial to ensuring the garbage collection effect of the filter device.

[0042] In summary, combining Figure 1 , Figure 2 and Figure 4 As shown, the present application solution incorporates a water pump 12 and a filter device 1 within the body 11 of the cleaning robot 10. The filter device 1 includes a first filter unit 2 and a second filter unit 3 detachably fitted onto the first filter unit 2. The size of the first filter hole 221 of the first filter unit 2 is larger than the size of the second filter hole 321 of the second filter unit 3. The water pump 12 can draw the liquid to be cleaned from outside the body 11 into the filter device 1, and can also discharge the cleaning liquid from the outlet 111 of the body 11. This reduces the risk of the first filter hole 221 and the second filter hole 321 of the filter device 1 being clogged by larger particles, allowing the liquid to be cleaned to continuously flow into the filter device 1, improving the waste collection effect of the filter device 1, and thus ensuring the cleaning effect of the cleaning robot 10. Simultaneously, the water flow rate from the outlet 111 is guaranteed, providing sufficient ground pressure for the cleaning robot 10, ensuring its normal operation and movement efficiency, and contributing to improved cleaning performance.

[0043] For ease of understanding, the relevant technical terms involved in the embodiments of this application will be explained and described below.

[0044] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more.

[0045] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Features specified as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0046] The directional terms mentioned in the embodiments of this application, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," "top," and "bottom," are only for reference to the directions in the accompanying drawings. These directional terms are used to better and more clearly explain and understand the embodiments of this application, and are not intended to explicitly or implicitly suggest that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, etc., and therefore should not be construed as limiting the embodiments of this application.

[0047] In the description of the embodiments in this application, unless otherwise stated, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0048] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A filtration device, characterized in that, The filtration device includes: The first filter unit includes a first main body and a first filter part, the first main body and the first filter part together form a first storage cavity, the first main body has a first suction port communicating with the first storage cavity, and the first filter part has a plurality of first filter holes. The second filter unit is located inside the first storage cavity and is detachably connected to the first filter unit. The second filter unit includes a second main body and a second filter part. The second main body and the second filter part together form a second storage cavity. The second main body has a second suction port that communicates with the second storage cavity. The second filter part has a plurality of second filter holes, and the size of the second filter holes is smaller than the size of the first filter holes.

2. The filtration device according to claim 1, characterized in that, The first main body is provided with a groove, the first suction port is provided in the groove, and the second suction port surrounds the side wall of the groove.

3. The filtration device according to claim 2, characterized in that, The first suction port is located on the bottom wall of the groove.

4. The filtration device according to claim 1, characterized in that, The first main body includes a first bottom wall, and the second main body includes a second bottom wall, the second bottom wall abutting against the first bottom wall; The first suction port is located on the first bottom wall, and the second suction port is located on the second bottom wall, with the second suction port covering at least a portion of the first suction port.

5. The filtration device according to claim 1, characterized in that, The first filter unit further includes a baffle located inside the first receiving cavity. The baffle is rotatably disposed at the first suction port and is used to open or close the first suction port.

6. The filtration device according to claim 1, characterized in that, One of the first main body and the second main body is provided with a snap-fit ​​member, and the other of the first main body and the second main body is provided with a snap-fit ​​groove. The first main body and the second main body are detachably connected through the snap-fit ​​member and the snap-fit ​​groove.

7. The filtration device according to claim 6, characterized in that, The second main body is provided with a protrusion near the snap-fit ​​member or the snap-fit ​​groove.

8. The filtration device according to claim 1, characterized in that, It also includes a flip cover, which is rotatably disposed at the opening of the first filter unit, and the flip cover is used to open or close the opening.

9. The filtration device according to claim 1, characterized in that, The first filter section is disposed on the peripheral wall of the first main body section, and the second filter section is disposed on the peripheral wall of the second main body section.

10. A cleaning robot, characterized in that, Includes the filtration device according to any one of claims 1-9.

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