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; the water inlet is communicated with the outside of the filtering element, the filtering element is used for filtering liquid introduced from the water inlet and guiding the filtered liquid out of the water outlet; 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.

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 and having a first cavity, the first cavity communicating with the water passing cavity and the water outlet, the water inlet communicating with the outside of the filtering member, the filtering member being used for filtering liquid introduced from the water inlet and discharging the filtered liquid from the water outlet, and 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 the liquid in the first cavity to move towards the inner wall surface of the filtering member.

[0006] In some embodiments, the flushing assembly comprises a movable body movably arranged in the first cavity, the movable body having a second cavity in the inside, the second cavity communicating with the first cavity, and a first impeller movably arranged in the second cavity, the filtering device further comprising a driving assembly for driving the first impeller to rotate relative to the second cavity to drain the liquid in the first cavity to the second cavity and drive the liquid in the second cavity to impact the side of the filtering member close to the first cavity.

[0007] In some embodiments, the second cavity comprises a first sub-cavity having the first impeller in the inside and extending along the radial direction of the first impeller, and a second sub-cavity arranged in the circumferential direction of the first sub-cavity and communicating with the first sub-cavity, the second sub-cavity extending along the axial direction of the first impeller, wherein the movable body further has a backflow hole communicating the second sub-cavity with the first cavity.

[0008] In some embodiments, the body further comprises a third cavity in communication with the first cavity, and the water outlet is in communication with the third cavity; the filter device further comprises a second impeller arranged in the third cavity, and the second impeller is rotatable relative to the third cavity to drive the liquid in the third cavity to flow out of the water outlet.

[0009] In some embodiments, the driving assembly is connected to the second impeller to drive the second impeller to rotate relative to the third cavity, and the second impeller is connected to the first impeller to drive the first impeller to rotate relative to the second cavity.

[0010] In some embodiments, the flushing assembly comprises a damping device connected to the movable body to control the rotating speed of the movable body, and the damping device comprises a follower assembly connected to the movable body and rotatable relative to the movable body about the axis, and an elastic assembly in contact with one end of the follower assembly in the axial direction to provide a circumferential resistance to the follower assembly when the follower assembly rotates.

[0011] In some embodiments, the follower assembly comprises a first connecting shaft fixedly connected to one end of the movable body, and a first damping member detachably connected to the other end of the first connecting shaft, wherein one side of the first damping member in the axial direction is in abutment with the elastic assembly.

[0012] In some embodiments, the other end of the first connecting shaft is provided with a threaded hole, and the first damping member is fixed to the other end of the first connecting shaft by a screw, and the position of the first damping member in the axial direction is adjusted by adjusting the distance between the screw and the threaded hole.

[0013] In some embodiments, the elastic assembly comprises a second damping member movably arranged outside the first connecting shaft and arranged between the body and the first damping member, and an elastic member extendable and retractable in the axial direction, one end of the elastic member is in abutment with the body, and the other end of the elastic member is in abutment with the second damping member.

[0014] In some embodiments, the first impeller is provided with a flow guide channel, and the first impeller is further provided with a liquid inlet and a liquid outlet in communication with the flow guide channel, the liquid inlet is used to guide the liquid in the first cavity into the flow guide channel, and the liquid outlet is used to guide the liquid in the flow guide channel out of the first sub-cavity.

[0015] In some embodiments, the flow guide channel comprises: a first flow channel, an angle between an extension direction of the first flow channel and the axial direction being less than or equal to 60 degrees, and one end of the first flow channel being in communication with the first cavity; and a second flow channel extending along the radial direction, one end of the second flow channel being in communication with the first flow channel, and the other end of the second flow channel being in communication with the first sub-cavity.

[0016] In some embodiments, the first impeller comprises: a first annular portion arranged around the axial direction; a second annular portion arranged around the axial direction, a portion of the second annular portion being spaced apart from the first annular portion along the axial direction to form the second flow channel; and a shaft sleeve extending along the axial direction, one end of the shaft sleeve being connected to an inner edge of the first annular portion, and the other end of the shaft sleeve penetrating through the second annular portion and being connected to the second impeller, wherein an outer surface of the shaft sleeve and another portion of the second annular portion form the first flow channel.

[0017] In some embodiments, the first impeller further comprises: a plurality of blades, each of the blades being connected to the first annular portion and the second annular portion, or each of the blades being connected to the first annular portion, the second annular portion and the shaft sleeve; and wherein the plurality of blades are arranged around the axial direction with a spacing therebetween, and each of the flow guide channels is formed between adjacent blades.

[0018] In some embodiments, the driving assembly comprises a first driving device and a second driving device, the first driving device being connected to the first impeller to drive the first impeller to rotate relative to the second cavity, and the second driving device being connected to the second impeller to drive the second impeller to rotate relative to the third cavity.

[0019] In some embodiments, the first driving device is connected to the first impeller through a driving shaft, and the scouring assembly further comprises an annular ring arranged between one end of the movable body and the body.

[0020] The embodiments of the present application also provide a cleaning device, which comprises the filter device as described above.

[0021] This invention provides a filtration device comprising a body, a filter element, and a flushing assembly. The body has a water passage chamber, an inlet, and an outlet connected to the water passage chamber. The filter element is disposed within the water passage chamber and has a first cavity inside, connecting the water passage chamber and the outlet. The inlet connects to the outside of the filter element. The filter element filters liquid introduced through the inlet and discharges the filtered liquid through the outlet. The flushing assembly is at least partially disposed within the first cavity and is movable relative to the first cavity to move at least a portion of the liquid within the first cavity toward the inner wall of the filter element. By incorporating a flushing assembly within the filter element, the movement of the flushing assembly relative to the first cavity causes a portion of the liquid within the first cavity to flush the inner wall of the filter element. This dislodges large particles clogging the water passages in the filter element, restores the water passages in the filter element's pores, and improves the flow efficiency of the filter element. Furthermore, in this embodiment of the invention, the flushing component flushes the inner wall of the filter element without exerting a squeezing force on the filter element, thereby reducing the problem of secondary pollution caused by residue passing through the filter element. The residue after flushing is collected in the water passage cavity on the outside of the filter screen for easy discharge. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of a filtering device according to an embodiment of the present invention;

[0023] Figure 2 This is an exploded view of a filtration device according to an embodiment of the present invention;

[0024] Figure 3 This is a perspective view of a movable body according to an embodiment of the present invention;

[0025] Figure 4 This is a partial cross-sectional view of a movable body according to an embodiment of the present invention;

[0026] Figure 5 This is a side view of a movable body according to an embodiment of the present invention;

[0027] Figure 6 This is a partial exploded view of a filtration device according to an embodiment of the present invention;

[0028] Figure 7 This is a perspective view of the first impeller according to an embodiment of the present invention;

[0029] Figure 8 This is a cross-sectional view of the first impeller according to an embodiment of the present invention;

[0030] Figure 9 This is a top view of the first impeller according to an embodiment of the present invention;

[0031] Figure 10 This is a cross-sectional view of a filtering device according to another embodiment of the present invention;

[0032] Figure 11 An exploded view of a filter device according to another embodiment of the application;

[0033] Figure 12 A partial exploded view of a filter device according to another embodiment of the application;

[0034] Figure 13 A perspective view of a moving body according to another embodiment of the application;

[0035] Figure 14 A partial sectional view of a moving body according to another embodiment of the application.

[0036] Explanation of reference numerals:

[0037] 1, body; 10, water passing cavity; 11, water inlet; 12, water outlet; 2, filter member; 20, first cavity; 21, inner wall surface; 3, flushing assembly; 31, moving body; 310, second cavity; 311, first sub-cavity; 312, second sub-cavity; 313, backflow hole; 315, passage wall; 316, end wall; 32, first impeller; 320, flow guide passage; 321, liquid inlet; 322, liquid outlet; 323, first drainage channel; 324, second drainage channel; 325, first annular portion; 326, second annular portion; 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; 341, following assembly; 3411, first connecting shaft; 3412, first damping member; 3413, threaded hole; 3414, screw; 342, elastic assembly; 3421, second damping member; 3422, elastic member; 4, third cavity; 5, second impeller. DETAILED DESCRIPTION

[0038] 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 accompanying 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.

[0039] In the specific embodiments, various specific technical features described can be combined in any suitable manner without contradiction, for example, different combinations of specific technical features can form different embodiments and technical solutions. In order to avoid unnecessary repetition, various possible combinations of various specific technical features in the present application are not described again.

[0040] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0041] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0042] 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.

[0043] This invention provides a filtration device, such as... Figure 1 As shown, the filtration device includes a main body 1, a filter element 2, and a flushing assembly 3. The main body 1 has a water passage chamber 10, and is further 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. As shown... 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.

[0044] The filtering device in the embodiment of the present application is further provided with a flushing assembly 3, which is at least partially arranged in the first cavity 20, that is, the flushing assembly 3 is at least partially arranged on the inner side of the filtering element 2, and the flushing assembly 3 is movable relative to the first cavity 20 to drive at least part of the liquid in the first cavity 20 to move towards the inner wall surface 21 of the filtering element 2. The movement of the flushing assembly 3 relative to the first cavity 20 includes, but is not limited to, rotation and / or translation of the flushing assembly 3 relative to the first cavity 20, and the specific form of the movement of the flushing assembly 3 relative to the first cavity 20 is not limited in the embodiment of the present application, as long as the flushing assembly 3 can change the relative position relative to the first cavity 20. In the embodiment of the present application, most of the liquid filtered by the filtering element 2 is guided out through the water outlet 12, and part of the liquid can be guided by the flushing assembly 3 to move towards the inner wall surface 21 of the filtering element 2, so that the liquid impacts the water passing gap on the inner wall surface of the filtering element 2, and the large particle substances filled in the water passing gap are flushed away from the filtering element 2, so that the through holes on the filtering element 2 regain the water passing gap, and the flow guiding efficiency of the filtering element 2 is improved. It should be noted that the large particle substances flushed away from the filtering element 2 can be guided out through another sewage passage (not shown in the figure) in the embodiment of the present application.

[0045] The embodiment of the present application provides a filtering device, which comprises a body, a filtering element and a flushing assembly. The body is internally 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 outer side of the filtering element. The filtering element is used for filtering the liquid introduced through 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 element. 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 flushed away 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 improved. In the embodiment of the present application, the flushing assembly flushes the inner wall surface of the filtering element, and does not exert a squeezing force on the filtering element, thereby reducing 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 on the outer side of the filtering net, and are conveniently discharged.

[0046] In some embodiments, in conjunction with Figure 1 and Figure 2As shown, the flushing assembly 3 comprises a movable body 31 and a first impeller 32. The movable body 31 is movably arranged in the first cavity 20, and the movable body 31 is internally 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 enter the first cavity 20. The first impeller 32 is movably arranged in the second cavity 310.

[0047] In combination Figure 1 and Figure 2 As shown, the filter device further comprises a driving assembly 33. The driving assembly 33 is connected with the first impeller 32, and the driving assembly 33 is used to drive the first impeller 32 to rotate relative to the second cavity 310, wherein the first impeller 32 rotates around the axis of the driving assembly 33, and in the case that 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.

[0048] In the embodiment of the present application, the driving assembly can drive the first impeller to rotate relative to the second cavity in the movable body, the rotation of the first impeller can drive the liquid in the second cavity to flow from the second cavity to the first cavity, the liquid flowing out of the first cavity can impact the inner wall surface of the filter element, and the rotating first impeller drives the liquid in the second cavity to do centrifugal motion, and the movable element can rotate with the liquid, so that the liquid flowing out of the second cavity to the first cavity can impact the filter element around the axial rotation, thereby improving the range of the filter element being flushed on the filter element and improving the cleanliness of the filter element.

[0049] In some embodiments, in combination Figures 1-4 As shown, the second cavity 310 comprises 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, that is, the first sub-cavity 311 can be obtained by rotating one circle of the diameter of the first impeller 32. 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 communicated with the first sub-cavity 311, and the second sub-cavity 312 extends along the axial direction of the first impeller 32, as Figure 1 As shown, the axial direction of the first impeller 32 is Figure 1 the left-right direction, and the radial direction of the first impeller 32 is Figure 1The activity body 31 is further provided with a backflow hole 313, which is communicated with the second sub-cavity 312 and the first cavity 20. In the embodiment of the present application, the second sub-cavity 312 of the activity body 31 is axially extended, so that the extending direction of the second sub-cavity 312 is substantially consistent with the extending direction of the filter element 2. The liquid in the second sub-cavity 312 can be discharged from the backflow hole 313 and can impact on the inner wall surface of the filter element in a large range, so as to enhance the cleanliness of the filter element.

[0050] In some embodiments, as shown in Figure 1 The length of the second sub-cavity 312 in the axial direction is greater than or equal to 0.5 times the length of the filter element 2 in the axial direction. The filter element 2 can be an annular filter screen arranged around the axial direction, and the two ends of the filter element 2 in the axial direction are respectively abutted against the two end surfaces of the body 1 in the axial direction, so that the filter element 2 can separate the water inlet 11 and the water outlet 12 on the inner and outer sides of the filter element 2, so that the liquid can enter the first cavity from the water inlet 11, pass through the filter element 2, and then be discharged from the water outlet 12, and the solid residues are blocked on the outer side of the filter element 2. In the embodiment of the present application, the length of the second sub-cavity in the axial direction is greater than or equal to half of the length of the filter element in the axial direction, so that the water flow discharged from the backflow hole communicated with the second sub-cavity can impact on the inner wall surface of the filter element in a large area, thereby improving the cleanliness of the filter element cleaning, and further improving the filtering efficiency of the filter element.

[0051] In some embodiments, in combination with Figure 3 and Figure 4 As shown in the drawings, the activity body 31 is provided with a plurality of groups of backflow holes 313, which are arranged at intervals in the circumferential direction; and each group of backflow holes 313 includes at least one backflow hole 313. In the embodiment of the present application, the second sub-cavity 312 can be arranged in a ring shape around the circumference of the first sub-cavity 311. 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 element. Alternatively, the second sub-cavity 312 can also be provided in multiple numbers, and the multiple second sub-cavities 312 are arranged at intervals around the circumference of the first sub-cavity 311. Arranging multiple second sub-cavities 312 at intervals is beneficial to realize flushing of the filter element without affecting the flow of filtered water to the water outlet, and is beneficial to improve the filtering efficiency of the filtering device. Figure 3 and Figure 4 In the embodiment shown in the drawings, the second sub-cavity 312 is provided in two numbers, and the two second sub-cavities 312 are symmetrically arranged on opposite sides of the first sub-cavity 311 in the circumferential direction. 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 4In the shown embodiment, three backflow holes 313 are arranged in a group of backflow holes in the same second sub-cavity 312, and the three backflow holes 313 are arranged at intervals in the axial direction of the second sub-cavity 312. 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 arranges multiple groups of backflow holes, and the multiple groups of backflow holes are arranged at intervals in the circumferential direction, and each group of backflow holes is arranged with multiple backflow holes at intervals in the circumferential direction. This is advantageous for increasing the area of the liquid in the second sub-cavity sprayed to the inner wall surface of the filter element, thereby increasing the cleanliness of the cleaning of the filter element, and further improving the filtering efficiency of the filter element.

[0052] In some embodiments, as shown in Figure 5 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 size of the opening 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. The embodiment of the present application arranges the ratio of the first size to the second size of the cross section of the backflow hole to be 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. This makes the cross section of the backflow hole flat, which is advantageous for increasing the range of the liquid sprayed in the axial direction by the backflow hole. The liquid sprayed by multiple backflow holes at intervals 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 element, 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 cleaning of the filter element.

[0053] In some embodiments, as shown in Figure 5 The first set value is 0.3 and the second set value is 0.8, that is, the ratio of the first size L1 perpendicular to the axial direction to the second size L2 in the axial direction of the backflow hole 313 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 arranged to have an elliptical shape and a circular rectangular shape, and the size ratio of the cross section is within a certain range. The embodiment of the present application limits the ratio of the first size to the second size of the cross section of the backflow hole to be within a certain range, which is advantageous for increasing the range of the liquid sprayed in the axial direction by the backflow hole, thereby increasing the range of the liquid sprayed in the axial direction by the entire group of backflow holes, and further improving the cleanliness of the cleaning of the filter element.

[0054] In some embodiments, as shown in Figure 1The body 1 is further 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 filtering device further comprises a second impeller 5 arranged in the third cavity 4. The second impeller 5 is rotatable 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 arranged in the third cavity 4 can accelerate the flow speed of the liquid in the third cavity 4, thereby improving the water guiding efficiency of the water pump. Figure 1 As shown in

[0055] In some embodiments, in combination with Figure 1 , Figure 2 and Figure 6 As shown in

[0056] In combination with Figure 1 , Figure 2 and Figure 6 As shown in Figure 1As shown on the right end, the elastic component 342 is fixed in the circumferential direction. That is, during the rotation of the follower component 341, the elastic component 342 is fixed, causing the follower component 341 to rotate relative to the surface of the elastic component 342. During the rotation, the elastic component 342 provides a circumferential frictional force to the follower component 341. The direction of this frictional force is opposite to the rotation direction of the follower component 341, so that the frictional force hinders the rotation of the follower component 341, thereby reducing the rotational speed of the moving body 31 connected to the follower component 341. This controls the rotational speed of the moving body 31, thereby increasing the speed and flow rate of the liquid discharged from the return hole in the moving body, and improving the cleanliness of the filter element cleaning.

[0057] In some embodiments, combined with Figure 1 , Figure 2 and Figure 6 As shown, the follower assembly 341 includes a first connecting shaft 3411 and a first damping element 3412. One end of the first connecting shaft 3411 ( Figure 1 The right end shown is fixedly connected to the movable body 31, and the first connecting shaft 3411 can rotate with the movable body 31; the other end of the first damping element 3412 is connected to the other end of the first connecting shaft 3411. Figure 1 The first damping element 3412 (shown on the left end) is detachably connected. It should be noted that "detachable" means that the first damping element 3412 and the first connecting shaft 3411 can be connected and disconnected. Furthermore, in some embodiments, the relative axial positions of the first damping element 3412 and the first connecting shaft 3411 can be fine-tuned during assembly and disassembly. Specifically, the first damping element 3412 is located on one side of the axial direction (…). Figure 1 (As shown on the right) abuts against the elastic component 342. The first damping element 3412 can rotate with the first connecting shaft 3411. During the rotation of the first damping element 3412, friction is generated between the first damping element 3412 and the elastic component 342 on one side in the axial direction. This friction can play a certain role in hindering the rotation of the first damping element 3412, thereby controlling the movement speed of the moving body 31.

[0058] In some embodiments, such as Figure 1 As shown, the other end of the first connecting shaft 3411 is provided with a threaded hole 3413, and the first damping member 3412 is connected to the other end of the first connecting shaft 3411. Figure 1The first damping member 3412 is fixed by the screw 3414, and the position of the first damping member 3412 in the axial direction is adjusted by adjusting the distance between the screw 3414 and the threaded hole 3413. The elastic assembly 342 is stretchable in the axial direction, that is, the position of the elastic assembly 342 in the axial direction is movable. By adjusting the position of the first damping member 3412 in the axial direction, the force with which the first damping member 3412 abuts against the elastic assembly 342 can be further adjusted, and the friction between the first damping member 3412 and the elastic assembly 342 is adjusted. In the case where the first damping member 3412 is arranged in the direction closer to the elastic assembly 342, the friction between the first damping member 3412 and the elastic assembly 342 is greater, and the control effect of the damping device on the rotating speed of the movable body is stronger. In the case where the first damping member 3412 is arranged in the direction away from the first damping member 3412, the friction between the first damping member 3412 and the elastic assembly 342 is smaller, and the control effect of the damping device on the rotating speed of the movable body is weaker. In the embodiment of the application, the first damping member and the first connecting shaft are fixed by the screw and the threaded hole, and the relative distance between the first damping member and the elastic assembly can be further adjusted by adjusting the distance between the screw and the threaded hole, so that the damping size of the damping device can be adjusted, which is beneficial to the adjustment of the rotating speed of the movable body in the scene of the first impeller with different rotating speeds, thereby improving the filtering efficiency of the filtering device.

[0059] In some embodiments, as shown in Figure 1 、 Figure 2 and Figure 6 , the elastic assembly 342 includes a second damping member 3421 and an elastic member 3422. The second damping member 3421 is movably arranged outside the first connecting shaft 3411, where the movability of the second damping member 3421 means that the second damping member 3421 can move in the axial direction, and the second damping member 3421 is arranged between the body 1 and the first damping member 3412. The elastic member 3422 is stretchable in the axial direction, and the stretchability means that the length of the elastic member 3422 in the axial direction can be lengthened and shortened. The elastic member 3422 has the ability to deform and recover from the deformation. One end of the elastic member 3422 abuts against the body 1, and the other end of the elastic member 3422 abuts against the second damping member 3421, that is, in the case where the second damping member 3421 moves relatively in the axial direction, the second damping member 3421 drives the elastic member 3422 to stretch and contract in the axial direction.

[0060] The working principle of the damping device is described as follows:

[0061] In combination with Figure 1 and Figure 6As shown, in the assembly process of the filter device, the position of the first damping member 3412 in the axial direction can be adjusted according to the rotating speed of the movable body 31, and the force of the first damping member 3412 and the second damping member 3421 abutting in the axial direction can be further adjusted by adjusting the position of the first damping member 3412 in the axial direction. Specifically, in the case of adjusting the first damping member 3412 in the direction close to the second damping member 3421, the second damping member 3421 is forced to move in the direction of extruding the elastic member 3422, and the compressed elastic member 3422 generates a counterforce to the second damping member 3421 and applies the counterforce to the first damping member 3412. In the actual use process of the filter device, since the resistance of the second damping member 3421 applied to the first damping member 3412 is large, the friction force of the second damping member 3421 on the first damping member 3412 in the rotating process is also large, so that the speed of the movable body can be greatly hindered.

[0062] In the case of adjusting the first damping member 3412 in the direction away from the second damping member 3421, the counterforce of the elastic member 3422 on the second damping member 3421 is small, so that the resistance of the second damping member 3421 applied to the first damping member 3412 is small, and the friction force of the second damping member 3421 on the first damping member 3412 in the rotating process is also small, so that the speed of the movable body can be hindered small.

[0063] It should be noted that the position of the first damping member in the axial direction in the embodiment of the application can be adjusted according to the specific damping requirement, that is, the position of the first damping member in the axial direction can be adjusted according to the rotating speed of the movable body or the rotating speed of the first impeller, so as to control the rotating speed of the movable body within a certain range, which is beneficial to more efficient guiding of the liquid by the movable body, so that the liquid can impact on the inner wall surface of the filter member more effectively, thereby improving the filtering efficiency of the filter device.

[0064] In some embodiments, in combination with Figure 1 , Figure 7 and Figure 8As shown, the first impeller 32 is internally provided with a flow guide channel 320, and the first impeller 32 is further provided with a liquid inlet 321 and a liquid outlet 322 which are in communication with the flow guide channel 320, the liquid inlet 321 is used for guiding 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, in the process of rotating the first impeller 32, the outline of the first impeller 32 outside will play a certain disturbance effect 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, by arranging the flow guide channel in the first impeller, the liquid in the first sub-cavity is guided to the direction of the second sub-cavity, so that the liquid flows out of the backflow hole of the second sub-cavity to the inner wall surface of the filter screen, thereby improving the cleanliness of the cleaning of the filter screen.

[0065] In some embodiments, as shown in Figure 8 The flow guide channel 320 includes a first flow guide channel 323 and a second flow guide channel 324. As shown in Figure 1 The angle θ between the extension direction of the first flow guide channel 323 and the axial direction is less than or equal to 60 degrees, and one end of the first flow guide channel 323 is in communication with the first cavity 20. The extension direction of the first flow guide channel 323 can be represented by the direction of the water flow in the first flow guide channel 323, and the angle θ between the extension direction and the axial direction can be represented by the angle between the connecting line of the first flow guide channel 323 at both ends and the axial direction. That is, the extension direction of the first flow guide channel 323 in the embodiment of the application is not necessarily a straight line direction, but also can be an arc direction. By setting the extension direction of the first flow guide channel 323 as an arc direction, the resistance of the liquid flowing in the first flow guide channel is reduced, thereby improving the cleanliness of the liquid washing the filter.

[0066] As shown in Figure 1 And Figure 8 The second flow guide channel 324 extends along the radial direction, one end of the second flow guide channel 324 is in communication with the first flow guide channel 323, and the other end of the second flow guide channel 324 is in communication with the first sub-cavity 311, and the other end of the second flow guide channel 324 is close to the second sub-cavity 312. The liquid in the first cavity flows into the first impeller 32 from the first flow guide channel 323, then flows into the second flow guide channel 324 from the first flow guide channel 323, and finally flows out of the second flow guide channel 324 into the second sub-cavity 312, and finally flows out of the backflow hole 313 of the second sub-cavity 312 into the first cavity 20 to impact the inner wall surface of the filter screen 2.

[0067] In some embodiments, as shown in Figure 7 AndFigure 8 As shown, the first impeller 32 includes a first annular portion 325, a second annular portion 326, and a bushing 327. The first annular portion 325 is arranged axially, the second annular portion 326 is arranged axially, a portion of the second annular portion 326 is axially spaced from the first annular portion 325 to form a second flow channel 324, and the bushing 327 extends axially, as shown... Figure 8 As shown, one end of bushing 327 ( Figure 8 The left end shown is connected to the inner edge of the first annular portion 325, and is combined with it. Figure 1 As shown, the other end of the bushing 327 passes through the second annular portion 326 and is connected to the drive assembly 33. The outer surface of the bushing 327 and another portion of the second annular portion 326 form a first flow channel 323. This embodiment of the invention, by configuring the first impeller with a structure of a first annular portion, a second annular portion, and a bushing, facilitates the formation of a flow channel within the first impeller and reduces the difficulty of connecting the first impeller to the drive assembly.

[0068] In some embodiments, combined with Figures 7-9 As shown, the first impeller 32 also includes a plurality of blades 328. Each blade 328 is connected to a first annular portion 325 and a second annular portion 326, or each blade 328 is connected to the first annular portion 325, the second annular portion 326, and a bushing 327. The plurality of blades 328 are spaced apart around the axial direction, and a flow channel 320 is formed between adjacent blades 328. By providing multiple blades in the first impeller, this embodiment of the invention increases the force on the liquid in the first sub-cavity during circumferential rotation, thereby improving the efficiency of the liquid's centrifugal motion in the first sub-cavity.

[0069] In some embodiments, such as Figures 10-14 As shown, the drive assembly 33 includes a first drive device 331 and a second drive device 332. The first drive device 331 is connected to the first impeller 32 to drive the first impeller 32 to rotate relative to the second cavity 310. The second drive device 332 is connected to the second impeller 5 to drive the second impeller 5 to rotate relative to the third cavity 4. The first drive device 331 and the second drive device 332 can be respectively disposed at two pairs of ends of the main body 1, for example, as shown in the figure. Figure 2 As shown, the first drive device 331 is mounted on the left end of the body 1 via the mounting base 3312, and the first drive device 331 is located on the outside of the body 1. The second drive device 332 is located on the right end of the body 1, and the second drive device 332 is located on the inside of the body 1. By setting the first drive device 331 and the second drive device 332 at the two ends of the body 1 respectively, this embodiment of the invention helps to reduce the interference between the movement of the first impeller 32 and the second impeller 5, and improves the working efficiency of the first impeller 32 and the second impeller 5.

[0070] like Figure 10As shown, the second impeller 5 is arranged in the body 1, the second impeller 5 can rotate relative to the body 1 independently of the flushing assembly 3, and the second impeller 5 is used to drive the liquid in the body 1 to the water outlet 12. It should be noted that the second impeller 5 moves independently of the first impeller 32, the second impeller 5 can not move synchronously with the first impeller 32, and the movements of the second impeller 5 and the first impeller 32 are respectively controlled by two independent drives, so that the movement of the first impeller 32 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 first impeller, the second impeller can improve the efficiency of the liquid in the first cavity to the water outlet, and the movement of the first impeller is not limited by the second impeller, which is beneficial to improve the flushing efficiency of the flushing assembly.

[0071] In some embodiments, in combination Figures 10-14 As shown, the first driving device 331 is connected to the first impeller 32 through the driving shaft 3311, and the flushing assembly 3 further comprises an annular ring 340 arranged between one end of the movable body 31 and the body 1. In the case that the first impeller 32 rotates, the first impeller 32 makes the liquid in the second cavity 310 do 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 speed of the movable body 31, which is beneficial to improve the flow speed of the liquid ejected from the backflow hole 313, thereby improving the impact force of the liquid on the filter element, so as to improve the cleaning degree of the filter element.

[0072] It should be noted that the resistance of the annular ring 340 in the embodiment of the present application can be realized by adjusting the material hardness, surface area size, thickness and number of the annular ring 340, for example, by arranging the annular ring 340 with larger hardness, the movable body 31 receives larger resistance during rotation, and by arranging the annular ring 340 with smaller hardness, the movable body 31 receives smaller resistance during rotation; by arranging the annular ring 340 with larger surface area, it is beneficial to increase the resistance of the annular ring 340 to the movable body 31, and by arranging the annular ring 340 with smaller surface area, it is beneficial to reduce the resistance of the annular ring 340 to the movable body 31. Or by arranging the annular ring with larger thickness, it is beneficial to increase the resistance of the annular ring 340 to the movable body 31, and by arranging the annular ring with smaller thickness, it is beneficial to reduce the resistance of the annular ring 340 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 parameters of the annular ring 340 can be adjusted according to the specific damping requirement.

[0073] In some embodiments, as Figure 13 and Figure 14As shown, the movable body 31 comprises a passage wall 315 and an end wall 316. The passage wall 315 forms a second cavity 310 inside, and the end wall 316 is connected to one end of the passage wall 316 (e.g. the left end as shown), which is combined with Figure 13 and Figure 10 and Figure 11 As shown, 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 the case of rotation of the movable body 31, the annular ring 340 can provide a 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.

[0074] The embodiment of the present application also provides a cleaning device, which comprises the water pump according to any of the above embodiments. The water pump in the embodiment of the present application comprises the filter device according to any of the above embodiments. The filter device sets the flushing assembly in the filter element, and drives part of the liquid in the first cavity to flush the inner wall surface of the filter element through the movement of the flushing assembly relative to the first cavity, so that the large particles filled in the water passing gap of the filter element are separated from the filter element, the through holes on the filter element regain the water passing gap, and the flow guiding efficiency of the filter element is improved. Moreover, the embodiment of the present application flushes the inner wall surface of the filter element through the flushing assembly, and does not exert the extrusion force on the filter element, thereby reducing the problem of secondary pollution caused by the residues penetrating the filter element. The flushed residues are gathered in the water passing cavity outside the filter screen, and are conveniently discharged. Thus, the washing degree of the entire cleaning device is improved.

[0075] The above merely describes the preferred embodiments of the present application, but is not used to limit the protection scope of the present application.

Claims

1. A filter device, characterized in that The utility model relates to a filter device, comprising: a body with a water passing cavity inside, the body is further provided with a water inlet and a water outlet communicating with the water passing cavity; a filter element arranged in the water passing cavity, the filter element is provided with a first cavity inside, the first cavity communicates with the water passing cavity and the water outlet, the water inlet communicates with the outside of the filter element, the filter element is used for filtering the liquid introduced by the water inlet and guiding the filtered liquid out of the water outlet; a flushing assembly arranged at least partially 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 element, part of the liquid filtered by the filter element is guided out of the water outlet, and part of the liquid is guided to move towards the inner wall surface of the filter element under the guidance of the flushing assembly; wherein the flushing assembly comprises: a movable body movably arranged in the first cavity, the movable body is provided with a second cavity inside, the second cavity communicates with the first cavity, and the movable body rotates with the liquid in the second cavity; a first impeller movably arranged in the second cavity; a damping device connected with the movable body to control the rotating speed of the movable body; the filter device further comprises: a driving assembly for driving the first impeller to rotate relative to the second cavity to guide the liquid in the first cavity to the second cavity and drive the liquid in the second cavity to impact the side of the filter element close to the first cavity.

2. The filter device of claim 1, wherein, the second cavity comprises: a first sub-cavity provided with the first impeller inside and extending along the radial direction of the first impeller; a second sub-cavity arranged in the circumferential direction of the first sub-cavity and communicating with the first sub-cavity, the second sub-cavity extends along the axial direction of the first impeller; wherein the movable body is further provided with a backflow hole communicating the second sub-cavity with the first cavity.

3. The filter device of claim 2, wherein, the body is further provided with a third cavity communicating with the first cavity, and the water outlet communicates with the third cavity; the filter device further comprises: a second impeller arranged in the third cavity, the second impeller is rotatable relative to the third cavity to guide the liquid in the third cavity out of the water outlet.

4. The filter device of claim 3, wherein, the driving assembly is connected with the second impeller to drive the second impeller to rotate relative to the third cavity, and the second impeller is connected with the first impeller to drive the first impeller to rotate relative to the second cavity.

5. The filter device of claim 4, wherein, the damping device comprises: a follower assembly connected with the movable body and rotatable along the axial direction with the movable body; an elastic assembly in contact with one end of the follower assembly along the axial direction to provide circumferential resistance to the follower assembly when the follower assembly rotates.

6. The filter device of claim 5, wherein, the follower assembly comprises: a first connecting shaft fixedly connected with the movable body at one end; a first damping element detachably connected with the other end of the first connecting shaft, wherein one side of the first damping element along the axial direction is in abutment with the elastic assembly.

7. The filter device of claim 6, wherein, The other end of the first connecting shaft is provided with a threaded hole, the first damping member is fixed with the other end of the first connecting shaft through a screw, and the position of the first damping member in the axial direction is adjusted by adjusting the distance between the screw and the threaded hole.

8. The filter device of claim 7, wherein, The elastic assembly comprises: A second damping member movably arranged outside the first connecting shaft and arranged between the body and the first damping member; An elastic member telescopically arranged in the axial direction, one end of the elastic member abutting against the body, and the other end of the elastic member abutting against the second damping member.

9. The filter device of claim 3, wherein, The first impeller is provided with a flow guide channel, and the first impeller is further provided with a liquid inlet and a liquid outlet communicating with the flow guide channel, the liquid inlet is used for guiding 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.

10. The filter device of claim 9, wherein, The flow guide channel comprises: A first flow guide channel, an angle between an extension direction of the first flow guide channel and the axial direction being less than or equal to 60 degrees, and one end of the first flow guide channel communicating with the first cavity; A second flow guide channel extending along the radial direction, one end of the second flow guide channel communicating with the first flow guide channel, and the other end of the second flow guide channel communicating with the first sub-cavity.

11. The filter device of claim 10, wherein, The first impeller comprises: A first annular portion arranged around the axial direction; A second annular portion arranged around the axial direction, a part of the second annular portion being spaced from the first annular portion in the axial direction to form the second flow guide channel; A shaft sleeve extending along the axial direction, one end of the shaft sleeve being connected with an inner edge of the first annular portion, and the other end of the shaft sleeve penetrating through the second annular portion and being connected with the second impeller, wherein an outer surface of the shaft sleeve and another part of the second annular portion form the first flow guide channel.

12. The filter device of claim 11, wherein, The first impeller further comprises: A plurality of blades, each of the blades being connected with the first annular portion and the second annular portion, or each of the blades being connected with the first annular portion, the second annular portion and the shaft sleeve; Wherein, the plurality of blades are arranged around the axial direction and spaced from each other to form one flow guide channel between adjacent blades.

13. The filter device of claim 3, wherein, The driving assembly comprises a first driving device and a second driving device, the first driving device being connected with the first impeller to drive the first impeller to rotate relative to the second cavity, and the second driving device being connected with the second impeller to drive the second impeller to rotate relative to the third cavity.

14. The filter device of claim 13, wherein, The first driving device is connected with the first impeller through a driving shaft, and the scouring assembly further comprises an annular ring arranged between one end of the movable body and the body.

15. A cleaning apparatus characterized by The filter device according to any one of claims 1-14. The filter device according to any one of claims 1-14.

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