Filtering device and cleaning apparatus

Abstract

The application provides a filtering device and a cleaning equipment, the filtering device comprises a body, a water passing cavity is arranged in the body, the body is further provided with a water inlet and a water outlet which are communicated with the water passing cavity; a filtering element is arranged in the water passing cavity, a first cavity is arranged in the filtering element, the first cavity is communicated with the water passing cavity and the water outlet, and the water outlet is communicated with the outside of the filtering element; a flushing assembly is at least partially arranged in the first cavity, the flushing assembly is movable relative to the first cavity to drive at least part of liquid in the first cavity to move towards the inner wall surface of the filtering element; and a second impeller is arranged in the body, the second impeller is rotatable relative to the body to drive the liquid in the body to be guided out of the water outlet.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of household appliances, and more particularly, relates to a filtering device and a cleaning equipment. BACKGROUND

[0002] The filtering device is used for filtering water in the cleaning equipment to realize recycling of water in the cleaning equipment, and the related filtering device is easily blocked by large-particle residues, resulting in poor filtering efficiency of the filtering device. SUMMARY

[0003] Therefore, the present application provides a filtering device and a cleaning equipment to solve the technical problem of how to improve the filtering efficiency of the filtering device.

[0004] The technical scheme of the present application is implemented as follows:

[0005] The filtering device provided by the present application comprises a body, a water passing cavity in the body, a water inlet and a water outlet of the body communicating with the water passing cavity, a filtering member arranged in the water passing cavity, a first cavity in the filtering member, the first cavity communicating with the water passing cavity and the water outlet, the water outlet communicating with the outside of the filtering member, a flushing assembly at least partially arranged in the first cavity, the flushing assembly being movable relative to the first cavity to drive at least part of liquid in the first cavity to move towards the inner wall surface of the filtering member, and a second impeller arranged in the body, the second impeller being rotatable relative to the body to drive liquid in the body to be guided out of the water outlet.

[0006] In some embodiments, the flushing assembly comprises a movable body movably arranged in the first cavity, a second cavity in the movable body, the second cavity communicating with the first cavity, a damping device connected with the movable body to control the rotating speed of the movable body, and a first impeller movably arranged in the second cavity.

[0007] In some embodiments, the body further comprises a third cavity communicating with the first cavity, the water outlet communicating with the third cavity, and the second impeller being arranged in the third cavity.

[0008] In some embodiments, the filtering device further comprises a driving assembly, the driving assembly comprising a first driving device connected with the first impeller to drive the first impeller to rotate relative to the second cavity, and a second driving device connected with the second impeller to drive the second impeller to rotate relative to the third cavity.

[0009] In some embodiments, the first driving device is connected to the first impeller through a driving shaft, and the damping device is arranged as an annular ring, which is arranged between one end of the movable body and the body.

[0010] In some embodiments, the movable body comprises a passage wall and an end wall, the passage wall forms the second cavity inside, and the end wall is connected to one end of the passage wall, and the annular ring is arranged between the end wall and the body.

[0011] In some embodiments, the second cavity comprises a first sub-cavity, which is internally provided with the first impeller and extends along the radial direction of the first impeller, and a second sub-cavity, which is arranged around the circumferential direction of the first sub-cavity and communicates with the first sub-cavity, and extends along the axial direction of the first impeller, wherein the movable body is further provided with a backflow hole, which communicates the second sub-cavity with the first cavity.

[0012] In some embodiments, the first impeller is internally provided with a flow guide passage, and the first impeller is further provided with a liquid inlet and a liquid outlet, which communicate with the flow guide passage, the liquid inlet is used for pouring the liquid in the first cavity into the flow guide passage, and the liquid outlet is used for guiding the liquid in the flow guide passage out of the first sub-cavity.

[0013] In some embodiments, the first impeller comprises a first annular part, which is arranged around the axial direction, a shaft sleeve, which extends along the axial direction, one end of the shaft sleeve is connected to the inner edge of the first annular part, and the other end of the shaft sleeve is connected to the driving shaft, and a plurality of blades, each of which is connected to one side of the first annular part away from the shaft sleeve, wherein the plurality of blades are arranged at intervals around the axial direction, and each of the flow guide passages is formed between adjacent blades.

[0014] The embodiment of the present application further provides a cleaning device, which comprises the filtering device according to any one of the above.

[0015] The embodiment of the present application provides a filtering device and cleaning equipment, the filtering device comprises a body, a filtering piece, a flushing assembly and a second impeller, the body is internally provided with a water passing cavity, the body is further provided with a water inlet and a water outlet connected with the water passing cavity, the filtering piece is arranged in the water passing cavity, the filtering piece is internally provided with a first cavity, the first cavity is connected with the water passing cavity and the water outlet, the water inlet is connected with the outside of the filtering piece, the filtering piece is used for filtering liquid introduced by the water inlet and guiding the filtered liquid out of the water outlet, the flushing assembly is at least partially arranged in the first cavity, and the flushing assembly is movable relative to the first cavity to drive at least part of the liquid in the first cavity to move towards the inner wall surface of the filtering piece, and the second impeller is arranged in the body, and the second impeller is rotatable relative to the body to guide the liquid in the body out of the water outlet. The embodiment of the present application is provided with the flushing assembly in the filtering piece, the movement of the flushing assembly relative to the first cavity drives part of the liquid in the first cavity to flush the inner wall surface of the filtering piece, so that the large particles filled in the water passing gap of the filtering piece are separated from the filtering piece, the through holes on the filtering piece regain the water passing gap, and the flow guiding efficiency of the filtering piece is provided. The inner wall surface of the filtering piece is flushed by the flushing assembly, so that the extrusion force on the filtering piece is reduced, thereby reducing the problem of secondary pollution caused by the residues penetrating the filtering piece. The residues flushed away are gathered in the water passing cavity outside the filtering screen, and are conveniently discharged. In the embodiment of the present application, the second impeller is movable relative to the body, the second impeller can improve the efficiency of guiding the liquid in the first cavity out of the water outlet, and the movement of the flushing assembly is not limited by the second impeller, so that the flushing efficiency of the flushing assembly is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a sectional view of the filtering device of the embodiment of the present application;

[0017] Figure 2 It is an exploded view of the filtering device of the embodiment of the present application;

[0018] Figure 3 It is a partial exploded view of the filtering device of the embodiment of the present application;

[0019] Figure 4 It is a perspective view of the movable body of the embodiment of the present application;

[0020] Figure 5 It is a partial sectional view of the movable body of the embodiment of the present application;

[0021] Figure 6 It is a perspective view of the first impeller of the embodiment of the present application;

[0022] Figure 7 It is a sectional view of the first impeller of the embodiment of the present application;

[0023] Figure 8 It is a side view of the movable body of the embodiment of the present application.

[0024] Explanation of reference signs:

[0025] 1, body; 10, water passing cavity; 11, water inlet; 12, water outlet; 2, filter; 20, first cavity; 21, inner wall surface; 3, flushing assembly; 31, movable body; 310, second cavity; 311, first sub-cavity; 312, second sub-cavity; 313, backflow hole; 314, movable cover; 315, passage wall; 316, end wall; 32, first impeller; 320, flow guide passage; 321, liquid inlet; 322, liquid outlet; 325, first annular part; 327, shaft sleeve; 328, blade; 33, driving assembly; 331, first driving device; 3311, driving shaft; 3312, mounting seat; 332, second driving device; 34, damping device; 340, annular ring; 4, third cavity; 5, second impeller. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0027] In the specific embodiments, various specific technical features described can be combined in any appropriate manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of various specific technical features in the present application are not described again.

[0028] In the following description, the terms "first", "second", and the like are only used to distinguish different objects, and do not mean that there is the same or a relationship between the objects. It should be understood that the terms "upper", "lower", "outer", "inner", "left", and "right" are the positions of the objects in the normal use state, and the "left" and "right" directions shown in the specific corresponding schematic diagram can be the left and right directions in the normal use state or can not be.

[0029] It should be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent to such a process, method, article, or apparatus. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus including the element. "Multiple" means greater than or equal to two.

[0030] This invention provides a filtration device that can be applied to cleaning equipment such as dishwashers, water pumps, slow cookers, and fruit and vegetable cleaners. It should be noted that the application scenarios of this invention do not limit the structure of the filtration device.

[0031] This invention provides a filtration device, such as... Figure 1 As shown, the filtration device includes a main body 1, a filter element 2, a flushing assembly 3, and a second impeller 5. The main body 1 has a water passage chamber 10 inside, and is also provided with an inlet 11 and an outlet 12 connecting the water passage chamber 10. The inlet 11 is used to introduce the liquid to be filtered into the water passage chamber 10, and the outlet 12 discharges the filtered liquid from the water passage chamber 10. For example... Figure 1 As shown, the filter element 2 is disposed within the water passage cavity 10. The filter element 2 is used to filter the liquid entering the water passage cavity 10 from the inlet 11. The filter element 2 has a first cavity 20 inside, which connects the water passage cavity 10 and the outlet 12. The inlet 11 connects to the outside of the filter element 2. In this embodiment, the filter element 2 is used to filter the liquid introduced through the inlet 11 and export the filtered liquid from the outlet 12. Specifically, the filter element 2 in this embodiment can be configured as a filter screen structure with small through-hole size. The filter element 2 can block most of the solids in the liquid on its outside, thus achieving a filtering effect. As large particles accumulate on the outside of the filter element 2, the water passage gaps formed by the through-holes of the filter element 2 are filled with large particles, affecting the water passage volume of the filter element 2.

[0032] The filtration device in this embodiment of the invention further includes a flushing component 3, which is at least partially disposed within the first cavity 20. That is, the flushing component 3 is at least partially disposed inside the filter element 2. The flushing component 3 can move relative to the first cavity 20 to drive at least a portion of the liquid within the first cavity 20 toward the inner wall surface 21 of the filter element 2. The movement of the flushing component 3 relative to the first cavity 20 includes, but is not limited to, rotation and / or translation. This embodiment of the invention does not limit the specific form of the flushing component 3's movement relative to the first cavity 20, as long as the flushing component 3 can produce a change in relative position with respect to the first cavity 20. In this embodiment of the invention, most of the liquid filtered by the filter element 2 is discharged through the outlet 12. A portion of the liquid can move toward the inner wall surface 21 of the filter element 2 under the guidance of the flushing component 3, causing the liquid to impact the water-passing gaps on the inner wall surface of the filter element 2 and flushing away large particles filled in the water-passing gaps from the filter element 2. This allows the through holes on the filter element 2 to regain water-passing gaps, thereby improving the flow guiding efficiency of the filter element 2. It should be noted that, in this embodiment of the invention, large particles flushed away from the filter element 2 can be discharged through an additional drainage channel (the drainage channel is not shown in the figure).

[0033] likeFigure 1 As shown, the second impeller 5 is arranged in the body 1, the second impeller 5 is rotatable relative to the body 1, and the second impeller 5 is used to drive the liquid in the body 1 to the water outlet 12. The second impeller 5 is rotatable relative to the body 1 independently of the flushing assembly 3. It should be noted that the movement of the second impeller 5 independently of the flushing assembly 3 means that the second impeller 5 can not move synchronously with the flushing assembly 3, and the movements of the second impeller 5 and the flushing assembly 3 are respectively controlled by two independent drives, so that the movement of the flushing assembly 3 is not limited by the second impeller 5. In the embodiment of the present application, the second impeller moves relative to the body independently of the flushing assembly, the second impeller can improve the efficiency of the liquid in the first cavity to the water outlet, and the movement of the flushing assembly is not limited by the second impeller, which is beneficial to improve the flushing efficiency of the flushing assembly.

[0034] The embodiment of the present application provides a filtering device, which comprises a body, a filtering element, a flushing assembly and a second impeller. The body is provided with a water passing cavity, and the body is further provided with a water inlet and a water outlet connected to the water passing cavity. The filtering element is arranged in the water passing cavity, and the filtering element is internally provided with a first cavity connected to the water passing cavity and the water outlet. The water inlet is connected to the outside of the filtering element. The filtering element is used to filter the liquid introduced by the water inlet and to guide the filtered liquid to the water outlet. The flushing assembly is at least partially arranged in the first cavity, and the flushing assembly is movable relative to the first cavity to drive at least part of the liquid in the first cavity to move towards the inner wall surface of the filtering element. The second impeller is arranged in the body, and the second impeller is rotatable relative to the body independently of the flushing assembly to guide the liquid in the body to the water outlet. In the embodiment of the present application, the flushing assembly is arranged in the filtering element, and the movement of the flushing assembly relative to the first cavity drives part of the liquid in the first cavity to flush the inner wall surface of the filtering element, so that the large particles filled in the water passing gap of the filtering element are separated from the filtering element, the through holes on the filtering element regain the water passing gap, and the flow guiding efficiency of the filtering element is provided. In the embodiment of the present application, the flushing assembly flushes the inner wall surface of the filtering element, and no extrusion force is applied to the filtering element, so as to reduce the problem of secondary pollution caused by the penetration of residues through the filtering element. The flushed residues are accumulated in the water passing cavity outside the filtering screen, and are convenient to discharge. In the embodiment of the present application, the second impeller moves relative to the body, the second impeller can improve the efficiency of the liquid in the first cavity to the water outlet, and the movement of the flushing assembly is not limited by the second impeller, which is beneficial to improve the flushing efficiency of the flushing assembly.

[0035] In some embodiments, in combination with Figure 1 and Figure 2As shown, the flushing assembly comprises the movable body 31, the damping device 34 and the first impeller 32. The movable body 31 is movably arranged in the first cavity 20, and the movable body 31 is provided with a second cavity 310, which is communicated with the first cavity 20, that is, the water in the first cavity 20 can enter the second cavity 310, and the water in the second cavity 310 can also flow out to the first cavity 20. The first impeller 32 is movably arranged in the second cavity 310. When the first impeller 32 rotates, the first impeller 32 can drive the liquid in the second cavity 310 to flow to the first cavity 20, so that the liquid can impact the inner wall surface of the filter element to realize the flushing of the water gap of the filter element.

[0036] As shown in the drawings, Figure 1 The damping device 34 is connected with the movable body 31, and the damping device 34 is used for controlling the rotating speed of the movable body 31. When the first impeller 32 drives the liquid in the second cavity 310 to do the centrifugal motion, the movable body 31 will rotate with the liquid in the second cavity 310. When the rotating speed of the movable body 31 is too fast, the flow speed of the liquid shot out from the backflow hole 313 is small, so that the liquid cannot flush away the large particles outside the filter screen. Therefore, the damping device 34 is arranged in the embodiment of the present application, the damping device 34 is connected with the movable body 31, the damping device can control the rotating speed of the movable body 31, the damping device 34 can provide a certain resistance to the movable body 31, so that the speed of the movable body 31 is reduced, thereby improving the flow speed of the liquid shot out from the backflow hole 313, and further improving the impact force of the liquid on the filter element, so as to improve the cleaning degree of the filter element.

[0037] In some embodiments, as shown in the drawings, Figure 1 The body 1 is also provided with a third cavity 4 communicated with the first cavity 20, and the water outlet 12 is communicated with the third cavity 4. The second impeller 5 is arranged in the third cavity 4. That is, the water filtered by the filter element 2 flows from the first cavity 20 to the third cavity 4, and then flows out from the water outlet 12 for subsequent use. As shown in the drawings, Figure 1 The second impeller 5 is arranged in the third cavity 4, and the second impeller 5 can rotate relative to the third cavity 4 to drive the liquid in the third cavity 4 to flow out of the water outlet 12. The second impeller 5 is arranged in the third cavity 4 in the embodiment of the present application, which is used for accelerating the flow speed of the liquid in the third cavity 4, so as to improve the water guiding efficiency of the water pump.

[0038] In some embodiments, as shown in the drawings, Figures 1-3As shown, the filtering device further comprises a driving assembly 33, the driving assembly 33 comprising a first driving device 331 and a second driving device 332. The first driving device 331 is connected to the first impeller 32, and is used to drive the first impeller 32 to rotate relative to the second cavity 310. The second driving device 332 is connected to the second impeller 5, and is used to drive the second impeller 5 to rotate relative to the third cavity 4. Wherein, the first driving device 331 and the second driving device 332 can be respectively arranged at two pairs of ends of the body 1, for example, as shown in the figure Figure 2 As shown, the first driving device 331 is installed at the left end of the body 1 through a mounting seat 3312, and the first driving device 331 is arranged at the outer side of the body 1, and the second driving device 332 is arranged at the right end of the body 1, and the second driving device 332 is arranged at the inner side of the body 1. By arranging the first driving device 331 and the second driving device 332 at the two ends of the body 1 respectively, the interference between the first impeller 32 and the second impeller 5 is reduced, and the working efficiency of the first impeller 32 and the second impeller 5 is improved.

[0039] In some embodiments, as shown in the figure Figure 1 As shown, the first driving device 331 is connected to the first impeller 32 through a driving shaft 3311, the first driving device 331 drives the driving shaft 3311 to rotate, and the driving shaft 3311 drives the first impeller 32 to rotate. The damping device 34 is arranged as an annular ring 340, which is arranged between one end of the movable body 31 and the body 1. In the case that the first impeller 32 rotates, the liquid in the second cavity 310 driven by the first impeller 32 does centrifugal motion, and the movable body 31 rotates with the liquid in the second cavity 310. Since the movable body 31 is connected to the body 1 through the annular ring 340, the movable body 31 overcomes the resistance provided by the annular ring 340 during rotation, thereby reducing the rotation speed of the movable body 31, which is conducive to improving the flow speed of the liquid ejected from the backflow hole 313, thereby improving the impact force of the liquid on the filtering element to improve the cleaning degree of the filtering element.

[0040] It should be noted that the resistance of the damping device 34 in the embodiment of the present application can be realized by adjusting the material hardness, surface area size, thickness and number of the annular rings 340, for example, by setting the annular rings 340 with greater hardness, the resistance received by the movable body 31 during rotation is greater, and by setting the annular rings 340 with smaller hardness, the resistance received by the movable body 31 during rotation is smaller; by setting the annular rings 340 with larger surface area, it is beneficial to increase the resistance generated by the damping device 34 to the movable body 31, and by setting the annular rings 340 with smaller surface area, it is beneficial to reduce the resistance generated by the damping device 34 to the movable body 31. Or by setting the annular rings with greater thickness, it is beneficial to increase the resistance generated by the damping device 34 to the movable body 31, and by setting the annular rings with smaller thickness, it is beneficial to reduce the resistance generated by the damping device 34 to the movable body 31. It should be noted that the adjustment mode of the damping size in the embodiment of the present application includes but is not limited to the above-mentioned several modes, that is, the embodiment of the present application can adjust the parameter setting of the annular ring 340 according to the specific damping requirement.

[0041] In some embodiments, as shown in Figure 4 and Figure 5 , the movable body 31 includes a channel wall 315 and an end wall 316. The second cavity 310 is formed inside the channel wall 315, and the end wall 316 is connected to one end (such as the left end as shown in Figure 4 ) of the channel wall 316, in combination with Figure 1 and Figure 2 , the annular ring 340 is abutted between the inner side of the end wall 316 and the body 1. The end cover of the body 1 is provided with an annular column, and the annular ring 340 is sleeved outside the annular column and abutted against the inner side of the end wall 316. In some embodiments, in combination with Figure 2 and Figure 4 , the movable body 31 further includes a movable cover 314, which is arranged at the right end of the channel wall 315, and the movable cover 314 forms the second cavity 310 with the channel wall 315. In the case of rotation of the movable body 31, the annular ring 340 can provide resistance in the circumferential direction of the movable body 31 to reduce the speed of the movable body 31. In some embodiments, the annular ring 340 can be fixed on the body 1, which helps to improve the resistance of the annular ring 340.

[0042] In some embodiments, in combination with Figures 1-5As shown, the second cavity 310 includes a first sub-cavity 311 and a second sub-cavity 312. The first sub-cavity 311 is internally provided with the first impeller 32, and the first sub-cavity 311 extends along the radial direction of the first impeller 32. It can be understood that the first sub-cavity 311 can be obtained by rotating the diameter of the first impeller 32 by 360 degrees. The first impeller 32 is arranged in the first sub-cavity 311. The second sub-cavity 312 is arranged around the circumference of the first sub-cavity 311, and the second sub-cavity 312 is in communication with the first sub-cavity 311. The second sub-cavity 312 extends along the axial direction of the first impeller 32, as shown in the left-right direction. Figure 1 As shown, the axial direction of the first impeller 32 is Figure 1 As shown, the radial direction of the first impeller 32 is Figure 1 As shown, the axial direction of the first impeller 32 is

[0043] In some embodiments, as shown, the ratio of the first size L1 to the second size L2 in the cross section of the backflow hole 313 is greater than or equal to a first set value and less than or equal to a second set value; wherein the first size is the maximum size of the cross section perpendicular to the axial direction, and the second size is the maximum size of the cross section in the axial direction. It should be noted that the size of the cross section of the backflow hole 313 represents the opening size of the backflow hole 313 that can be used to guide the liquid. The shape of the backflow hole 313 has a certain influence on the direction of the liquid. In the embodiments of the present application, the ratio of the first size to the second size of the cross section of the backflow hole is greater than or equal to the first set value and less than or equal to the second set value, and the ratio is less than 1. The cross section of the backflow hole is flat, which is beneficial to increase the range of liquid sprayed in the axial direction by the backflow hole. The liquid sprayed by multiple spaced backflow holes in the same group of backflow holes can cover a straight line in the axial direction of the filter element. During the rotation of the movable body, the liquid sprayed by the backflow holes in the same group can cover the entire inner wall surface of the filter element, thereby improving the cleanliness of the filter element. Figure 8

[0044] In some embodiments, as shown, the ratio of the first size L1 to the second size L2 in the cross section of the backflow hole 313 is greater than or equal to a first set value and less than or equal to a second set value; wherein the first size is the maximum size of the cross section perpendicular to the axial direction, and the second size is the maximum size of the cross section in the axial direction. It should be noted that the size of the cross section of the backflow hole 313 represents the opening size of the backflow hole 313 that can be used to guide the liquid. The shape of the backflow hole 313 has a certain influence on the direction of the liquid. In the embodiments of the present application, the ratio of the first size to the second size of the cross section of the backflow hole is greater than or equal to the first set value and less than or equal to the second set value, and the ratio is less than 1. The cross section of the backflow hole is flat, which is beneficial to increase the range of liquid sprayed in the axial direction by the backflow hole. The liquid sprayed by multiple spaced backflow holes in the same group of backflow holes can cover a straight line in the axial direction of the filter element. During the rotation of the movable body, the liquid sprayed by the backflow holes in the same group can cover the entire inner wall surface of the filter element, thereby improving the cleanliness of the filter element. Figure 8 ​As shown, the first setting value is 0.3, and the second setting value is 0.8, that is, the ratio of the first size L1 of the backflow hole 313 in the vertical axial direction to the second size L2 in the axial direction is greater than or equal to 0.3 and less than or equal to 0.8, for example, the cross section of the backflow hole 313 can be set to an elliptical shape and a circular rectangle, and the like, the size ratio of the cross section is within a certain range, and the embodiment of the present application limits the ratio of the first size and the second size of the cross section of the backflow hole within a certain range, which is beneficial to improve the range of the backflow hole in the axial direction, thereby improving the range of the whole set of backflow holes in the axial direction, and further improving the cleanliness of the filter cleaning.

[0045] In some embodiments, in combination with Figure 4 and Figure 5 As shown, the movable body 31 is provided with a plurality of groups of backflow holes 313, and the plurality of groups of backflow holes 313 are arranged at intervals in the circumferential direction; and each group of backflow holes 313 includes at least one backflow hole 313; wherein the second sub-cavity 312 in the embodiment of the present application can be arranged in the circumferential direction around the first sub-cavity 311 in a ring shape, and in the case of arranging the second sub-cavity 312 in a ring shape, it is beneficial to improve the area and flushing efficiency of the second sub-cavity for spraying the filter; or the second sub-cavity 312 can also be provided in multiple, and the plurality of second sub-cavities 312 are arranged at intervals in the circumferential direction around the first sub-cavity 311, and the plurality of second sub-cavities 312 arranged at intervals are beneficial to realize flushing of the filter while not affecting the flow of the filtered water flow to the water outlet, and are beneficial to improve the filtering efficiency of the filtering device. Figure 4 and Figure 5 In the embodiment shown, the second sub-cavity 312 is provided in two, and the two second sub-cavities 312 are symmetrically arranged on opposite sides of the first sub-cavity 311 in the circumferential direction, and each second sub-cavity 312 is provided with a group of backflow holes 313, and each group of backflow holes 313 includes one or more backflow holes 313, Figure 5 In the embodiment shown, a group of backflow holes in the same second sub-cavity 312 is provided with three backflow holes 313, and the three backflow holes 313 are arranged at intervals in the axial direction of the second sub-cavity 312. Wherein, the axial direction of the second sub-cavity 312 is the same direction as the axial direction of the first impeller 32. The embodiment of the present application provides a plurality of groups of backflow holes, and the plurality of groups of backflow holes are arranged at intervals in the circumferential direction, and each group of backflow holes is provided with a plurality of backflow holes arranged at intervals in the circumferential direction, which is beneficial to increase the area of the liquid in the second sub-cavity sprayed to the inner wall surface of the filter, thereby increasing the cleanliness of the filter cleaning, and further improving the filtering efficiency of the filter.

[0046] In some embodiments, in combination with Figure 1 , Figure 6 and Figure 7As shown, the first impeller 32 is provided with a flow guide channel 320, and the first impeller 32 is also provided with a liquid inlet 321 and a liquid outlet 322 which are communicated with the flow guide channel 320, the liquid inlet 321 is used for pouring the liquid in the first cavity 20 into the flow guide channel 320, and the liquid outlet 322 is used for guiding the liquid in the flow guide channel 320 out of the first sub-cavity 311. Wherein, during the rotation of the first impeller 32, the outline of the outer part of the first impeller 32 will play a certain disturbance role on the liquid in the first sub-cavity 311, through the rotation of the first impeller 32, the liquid in the first sub-cavity 311 is driven to flow, and the flow guide channel 320 is arranged in the first impeller 32, so that the liquid can move along the direction of the flow guide channel 320, thereby guiding the liquid in the first sub-cavity 311 to the direction of the liquid outlet 322, and the liquid outlet 322 is close to the second sub-cavity 312, therefore, the embodiment of the present application is beneficial to guiding the liquid in the first sub-cavity to the direction of the second sub-cavity by arranging the flow guide channel in the first impeller, so as to improve the cleanliness of the cleaning of the filter screen.

[0047] In some embodiments, as Figure 7 As shown, the first impeller 32 includes a first annular part 325, a shaft sleeve 327 and a plurality of blades 328. The first annular part 325 is arranged around the axis, the shaft sleeve 327 extends along the axis, one end of the shaft sleeve 327 is connected with the inner edge of the first annular part 325, and the Figure 1 As shown, the other end of the shaft sleeve 327 is connected with the driving shaft 3311, and each blade 328 is connected to the side of the first annular part 325 away from the shaft sleeve 327. Wherein, the plurality of blades 328 are arranged at intervals around the axis, and a flow guide channel 320 is formed between adjacent blades 328. The embodiment of the present application is beneficial to increase the stress of the liquid in the first sub-cavity during the circumferential rotation by arranging a plurality of blades in the first impeller, thereby improving the efficiency of the centrifugal motion of the liquid in the first sub-cavity along the circumference.

[0048] The embodiment of the present application also provides a cleaning device, which comprises the filter device according to any one of the above embodiments. The filter device comprises a body, a filter piece, a flushing assembly and a second impeller. The body is internally provided with a water passing cavity. The body is also provided with a water inlet and a water outlet connected with the water passing cavity. The filter piece is arranged in the water passing cavity. The filter piece is internally provided with a first cavity. The first cavity is connected with the water passing cavity and the water outlet. The water inlet is connected with the outside of the filter piece. The filter piece is used for filtering liquid introduced by the water inlet and guiding the filtered liquid out of the water outlet. The flushing assembly is at least partially arranged in the first cavity. The flushing assembly is movable relative to the first cavity to drive at least part of the liquid in the first cavity to move towards the inner wall surface of the filter piece. The second impeller is arranged in the body. The second impeller is rotatable relative to the body independently of the flushing assembly to guide the liquid in the body out of the water outlet. According to the embodiment of the present application, the flushing assembly is arranged in the filter piece. The movement of the flushing assembly relative to the first cavity drives part of the liquid in the first cavity to flush the inner wall surface of the filter piece, so that the large particles filled in the water passing gap of the filter piece are separated from the filter piece, the through holes on the filter piece regain the water passing gap, and the flow guiding efficiency of the filter piece is provided. According to the embodiment of the present application, the flushing assembly flushes the inner wall surface of the filter piece without exerting extrusion force on the filter piece, so that the problem of secondary pollution caused by the penetration of residues through the filter piece is reduced. The flushed residues are accumulated in the water passing cavity outside the filter screen, and are conveniently discharged. According to the embodiment of the present application, the second impeller moves relative to the body independently of the flushing assembly. The second impeller can improve the efficiency of guiding the liquid in the first cavity out of the water outlet. The movement of the flushing assembly is not limited by the second impeller, and the flushing efficiency of the flushing assembly is improved.

[0049] The above merely describes the preferred embodiments of the present application, but not for limiting the protection scope of the present application.

Claims

1. A filter device, characterized in that The utility model relates to a filter device, including: A body has a water passing cavity inside, and the body is also provided with a water inlet and a water outlet which communicate with the water passing cavity; A filter element is arranged in the water passing cavity, and the filter element is internally provided with a first cavity which communicates with the water passing cavity and the water outlet, and the water outlet communicates with the outside of the filter element; A flushing assembly is at least partially arranged in the first cavity, and the flushing assembly is movable relative to the first cavity to drive at least part of the liquid in the first cavity to move towards the inner wall surface of the filter element; A second impeller is arranged in the body, and the second impeller is rotatable relative to the body to drive the liquid in the body to be guided out of the water outlet; The flushing assembly comprises a movable body and a first impeller, the movable body is movably arranged in the first cavity, the movable body is internally provided with a second cavity which communicates with the first cavity, and the first impeller is movably arranged in the second cavity; The body is also provided with a third cavity which communicates with the first cavity, and the water outlet communicates with the third cavity; The second impeller is arranged in the third cavity; The filter device further comprises a driving assembly, and the driving assembly comprises: A first driving device which connects the first impeller to drive the first impeller to rotate relative to the second cavity; A second driving device which connects the second impeller to drive the second impeller to rotate relative to the third cavity.

2. The filter device of claim 1, wherein, The flushing assembly comprises: A damping device which is connected with the movable body to control the rotating speed of the movable body.

3. The filter device of claim 2, wherein, The first driving device is connected with the first impeller through a driving shaft, the damping device is arranged as an annular ring, and the annular ring is arranged between one end of the movable body and the body.

4. The filter device of claim 3, wherein, The movable body comprises a channel wall and an end wall, the channel wall internally forms the second cavity, the end wall is connected to one end of the channel wall, and the annular ring abuts between the end wall and the body.

5. The filter device of claim 4, wherein, The second cavity comprises: A first sub-cavity which internally arranges the first impeller and extends along the radial direction of the first impeller; A second sub-cavity which is arranged in the circumferential direction of the first sub-cavity and communicates with the first sub-cavity and extends along the axial direction of the first impeller; The movable body is also provided with a backflow hole which communicates the second sub-cavity with the first cavity.

6. The filter device of claim 5, wherein, The first impeller is internally provided with a flow guide channel, and the first impeller is also provided with a liquid inlet and a liquid outlet which communicate with the flow guide channel, the liquid inlet is used for pouring the liquid in the first cavity into the flow guide channel, and the liquid outlet is used for guiding the liquid in the flow guide channel out of the first sub-cavity.

7. The filter device of claim 6, wherein, The first impeller comprises: A first annular part which is arranged in the axial direction; A shaft sleeve which extends along the axial direction, one end of the shaft sleeve is connected with the inner edge of the first annular part, and the other end of the shaft sleeve is connected with the driving shaft; A plurality of blades, each blade is connected to one side of the first annular part away from the shaft sleeve; wherein the plurality of blades are arranged at intervals in the axial direction, and one flow guide channel is formed between adjacent blades.

8. A cleaning apparatus characterized by, Comprising: The filter device according to any one of claims 1-7.

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