CN115137258A

CN115137258A - Filter unit, filter system, cleaning robot, and base station

Info

Publication number: CN115137258A
Application number: CN202110352319.0A
Authority: CN
Inventors: 谢晓丹
Original assignee: Shenzhen Silver Star Intelligent Group Co Ltd
Current assignee: Shenzhen Silver Star Intelligent Group Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-10-04

Abstract

The invention discloses a filter unit, a filter system, a cleaning robot and a base station, wherein the filter unit is used for cleaning equipment and comprises a shell, a first filter layer and a second filter layer. The shell is provided with a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is provided with a liquid inlet and a liquid inlet outlet, and the liquid outlet channel is provided with a liquid outlet and a liquid outlet. First filter layer is located in the casing, and correspond the feed liquor export sets up. The second filter layer is arranged in the shell and is positioned at one side of the liquid inlet outlet, which is far away from the first filter layer, and corresponds to the liquid outlet inlet. The filtering unit filters the dirty liquid generated after the cleaning equipment is cleaned, and the filtrate can be reused, so that the dirty liquid is recycled, a user does not need to clean the dirty liquid, the user experience is improved, and the water is saved.

Description

Filter unit, filter system, cleaning robot, and base station

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to a filtering unit, a filtering system, a cleaning robot and a base station.

Background

Along with the continuous improvement of the living standard of people, the cleaning robot is more and more widely popularized, the intelligent degree of the cleaning robot is developed from the initial primary intelligence to the higher intelligent degree, and the cleaning robot gradually replaces the traditional manual cleaning.

The cleaning robot has a floor washing function, and sewage generated in the floor washing process is sucked into the sewage tank. Because sewage case capacity is limited, when sewage case water is full, need the manual sewage of pouring out of user, be unfavorable for promoting user experience.

Disclosure of Invention

The invention mainly aims to provide a filtering unit, aiming at avoiding manually pouring sewage in a sewage tank and improving user experience.

To achieve the above object, the present invention provides a filter unit for a cleaning device, the filter unit comprising:

the liquid inlet channel is provided with a liquid inlet and a liquid outlet, and the liquid outlet channel is provided with a liquid outlet and a liquid outlet;

the first filter layer is arranged in the shell and corresponds to the liquid inlet; and

the second filter layer is arranged in the shell and is positioned at one side, away from the liquid inlet outlet, of the first filter layer, and corresponds to the liquid outlet.

In addition, in order to achieve the above object, the present invention further provides a filtration system, including a filtration unit and a suction device, wherein the suction device is communicated with the liquid outlet of the filtration unit, and is used for sucking the liquid output by the liquid outlet;

the filter unit includes:

In addition, in order to achieve the above object, the present invention further provides a cleaning robot, including a robot housing, the cleaning robot further including a filter system, the filter system being mounted to the robot housing;

the filtering system comprises a filtering unit and a suction device, and the suction device is communicated with the liquid outlet of the filtering unit and is used for sucking the liquid output by the liquid outlet;

the filter unit includes:

In addition, in order to achieve the above object, the present invention further provides a base station, including a base body, the base station further including a filtering system, the filtering system being installed on the base body;

the filter unit includes:

the second filter layer is arranged in the shell and is positioned at one side of the liquid inlet outlet, which is far away from the first filter layer, and corresponds to the liquid outlet inlet.

According to the technical scheme, the dirty liquid generated after cleaning of the cleaning equipment is filtered through the first filter layer and the second filter layer in the filter unit, and the filtrate can be reused, so that the dirty liquid is recycled, a user does not need to clean the dirty liquid, the user experience is improved, and water is saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a cleaning robot according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the cleaning robot of FIG. 1;

FIG. 3 is a schematic view of a portion of the cleaning robot of FIG. 1;

FIG. 4 is a cross-sectional view of a waste bin of the dirty liquid collecting device of the cleaning robot of FIG. 1;

FIG. 5 is another cross-sectional view of the cleaning robot of FIG. 1;

FIG. 6 is another partial schematic structural view of the cleaning robot of FIG. 1;

FIG. 7 is a schematic view of a filter system of the cleaning robot of FIG. 1;

FIG. 8 is a schematic diagram of the filter unit of the filter system of FIG. 7;

FIG. 9 is a schematic view of the filter unit of the filter system of FIG. 7 from another perspective;

FIG. 10 is a cross-sectional view of the filter unit of FIG. 8;

FIG. 11 is an exploded view of the filter unit of FIG. 8;

FIG. 12 is an enlarged view of area A of FIG. 5;

fig. 13 is a schematic structural diagram of a base station according to an embodiment of the present invention.

The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions such as "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 and 2, in an embodiment, the cleaning robot includes a robot housing 1, a cleaning assembly 2, a dirty liquid collecting device 3, a filtering system 4, and a liquid supply system 5, wherein the cleaning assembly 2, the dirty liquid collecting device 3, the filtering system 4, and the liquid supply system 5 are all mounted on the robot housing 1. Dirty liquid collection device 3 is connected to clean subassembly 2, and dirty liquid collection device 3 intercommunication filtration system 4, filtration system 4 intercommunication liquid supply system 5, and liquid supply system 5 output cleaning solution is to clean subassembly 2. When the cleaning robot works, the cleaning assembly 2 is used for washing the ground and wiping the ground, the dirty liquid collecting device 3 collects the dirty liquid generated when the cleaning assembly 2 is used for washing the ground and wiping the ground, the filtering system 4 filters the dirty liquid, the filtered filtrate is conveyed to the liquid supply system 5, and the liquid is supplied to the cleaning assembly 2 through the liquid supply system 5, so that the dirty liquid is recovered, filtered, circulated and recycled, the user does not need to pour the sewage frequently, the user experience is improved, the generated sewage can be continuously circulated and recycled, and the water is saved.

In this embodiment, the robot housing 1 includes a chassis 10 and a cover 12 covering the chassis 10, and an installation space is formed between the chassis 10 and the cover 12, and the installation space can be used for installing a circuit board (not shown), a power source (not shown), left and right wheel assemblies 6, a universal wheel assembly (not numbered), and the like of the cleaning robot.

In this embodiment, the cleaning assembly 2 is mounted on a chassis 10 and includes a drive mechanism (not shown) and a roller 20, the drive mechanism being coupled to the roller 20. The chassis 10 is provided with a space avoiding portion corresponding to the roller 20, and the roller 20 is installed on the chassis 10 and extends out of the bottom of the chassis 10 through the space avoiding portion to contact the ground. The driving mechanism is arranged on the chassis 10 and is used for driving the roller 20 to rotate, and the wetted roller 20 rubs with the ground to clean the ground, thereby realizing the ground washing and wiping.

In other embodiments, the cleaning assembly 2 may be a track type cleaning structure, i.e. having a cleaning cloth in the shape of a track, which is rotated by a driving mechanism, at least part of the cleaning cloth being in contact with the floor surface to clean the floor surface.

Referring to fig. 2 to 4, in the present embodiment, the waste liquid collecting device 3 includes a garbage box 30 and a garbage filter 32, the garbage box 30 has a bottom 300 disposed obliquely, the garbage filter 32 is disposed in the garbage box 30 to divide the space in the garbage box 30 into a garbage tank 302 and a waste liquid tank 304, and the bottom of the waste liquid tank 304 is lower than the bottom of the garbage tank 302.

One side of the garbage box 30 is arranged close to the roller 20 to receive garbage and dirty liquid falling from the roller 20, after the garbage and the dirty liquid enter the garbage box 30, the dirty liquid flows into and is collected in the dirty liquid tank 304 under the action of gravity due to the inclined arrangement of the bottom 300 of the garbage box 30, and the garbage is separated in the garbage tank 302 by the garbage filter screen 32.

The dirty liquid collecting device 3 further comprises a fan assembly 34, the fan assembly 34 comprises a fan 320, an air inlet duct 322 and an air outlet duct 324, the fan 320 is respectively communicated with the air inlet duct 322 and the air outlet duct 324, and the air inlet duct 322 is communicated with the garbage box 30. The garbage box 30 has an opening, and the periphery of the opening is abutted against the arc surface of the roller 20 in the axial direction, so that the contact tightness between the garbage box 30 and the surface of the roller 20 is ensured. The trash can 30 collects sewage and trash more effectively by the suction force of the fan assembly 34.

In other embodiments, to better collect the dirt and waste on the drum 20, the dirt collection device 3 further comprises an extrusion member that is in pressing contact with the drum 20 to compress the dirt and waste. In order to better scrape off the garbage adhered on the roller 20, the surface of the extrusion piece can be provided with a convex structure to increase friction and remove the garbage on the roller 20. In other embodiments, the dirty liquid collecting device 3 may comprise a dirty water tank into which dirty water is drawn by the fan assembly.

The garbage box 30 is detachably mounted on the chassis 10, so that a user can conveniently clean the garbage poured out of the garbage box 30.

Referring to fig. 5 to 7, in the present embodiment, the filtering system 4 includes a filtering unit 40 and a suction device 42, and the suction device 42 is in communication with the filtering unit 40 and is used for sucking the liquid output by the filtering unit 40. The suction device 42 may increase the flow of liquid between the filter materials of the filter unit 40 to increase the filtration rate. Specifically, the filter unit 40 communicates with the dirty liquid tank 304 of the trash box 30 through a pipeline, and the suction device communicates with the filter unit 40 through a pipeline.

The suction device 42 is a water pump, which may be embodied as a peristaltic pump, a diaphragm pump or an electromagnetic pump.

Referring to fig. 8 to 12, the filter unit 40 includes a housing 41, a first filter layer 43 and a second filter layer 44. The housing 41 is provided with a liquid inlet channel 400 and a liquid outlet channel 403, the liquid inlet channel 400 is provided with a liquid inlet 401 and a liquid outlet 402, and the liquid inlet 401 is communicated with the dirty liquid groove 304 in the garbage box 30 through a pipeline. The liquid outlet channel 403 is provided with a liquid outlet inlet 404 and a liquid outlet 405, and the liquid outlet 405 is communicated with the liquid supply system 5 through a pipeline. The first filter layer 43 is disposed in the housing 41 and corresponds to the inlet 402. The second filter layer 44 is disposed in the housing 41, on a side of the first filter layer 43 away from the inlet 402, and is disposed corresponding to the outlet 404.

This first filter layer 43 carries out prefiltering to the foul solution, and this second filter layer 44 filters once more, and improves the filter effect, realizes retrieving, recycling the foul solution to the filtration of foul solution by this filter unit 40, and the user need not to pour out the foul solution, has promoted user experience, and has practiced thrift the water.

The housing 41 is provided with a first accommodating chamber 430 and a second accommodating chamber 440, and the liquid inlet 402, the first accommodating chamber 430, the second accommodating chamber 440 and the liquid outlet 404 are sequentially communicated. The first filter layer 43 is accommodated in the first accommodating chamber 430, and the second filter layer 44 is accommodated in the second accommodating chamber 440. Therefore, the dirty liquid flows through the liquid inlet 402, the first accommodating chamber 430, the second accommodating chamber 440 and the liquid outlet 404 in sequence, is filtered by the first filter layer 43 in the first accommodating chamber 430, and is filtered by the second filter layer 44 in the second accommodating chamber 440. In the first receiving chamber 430 and the second receiving chamber 440, in addition to a space in which the filter material is placed, other spaces may temporarily store the liquid, thereby increasing a dirty liquid volume.

The housing 41 includes a bottom case 410 and a cover 412, and the cover 412 covers the bottom case 410. The bottom case 410 is provided with a second accommodating cavity 440 and a liquid outlet channel 403. The cover 412 is provided with a liquid inlet channel 400 and a first accommodating cavity 430, the cover 412 includes a partition 432, and the partition 432 is hollowed out to communicate the first accommodating cavity 430 with a second accommodating cavity 440. The first filter layer 43 is disposed on the partition layer 432, and the liquid filtered by the first filter layer 43 flows through the partition layer 432 into the second receiving chamber 440.

The cover 412 includes a first cover 413 and a second cover 414. The first cover 413 covers the bottom case 410, the first cover 413 has a groove, the first receiving cavity 430 is formed in the groove, and the partition layer 432 is formed at the bottom of the groove. The second cover member 414 is closed to the first cover member 413, and the liquid inlet passage 400 is formed in the second cover member 414.

In other words, in the present embodiment, the housing 41 includes a bottom case 410 and a cover 412 covering the bottom case 410. The cover 412 has a first accommodating chamber 430, the liquid inlet channel 400 is formed in the cover 412, and the first filter layer 43 is accommodated in the first accommodating chamber 430. The bottom case 410 is provided with a second accommodating cavity 440, the liquid outlet channel 403 is formed on the bottom case 410, and the second filter layer 44 is accommodated in the second accommodating cavity 440. The liquid inlet channel 400, the first accommodating cavity 430, the second accommodating cavity 440 and the liquid outlet channel 403 are sequentially communicated.

This first filter layer 43 is the filter screen, and its prefiltering particulate matter separates the particulate matter shelves in first holding chamber 430, prevents that the particulate matter from getting into second holding chamber 440, avoids second filter layer 44 to be blockked up by the particulate matter, realizes the stage filtration to improve life.

In this embodiment, the housing 41 further includes a sealing ring disposed between the bottom case 410 and the lid 412, and the sealing ring provides sealing performance between the bottom case 410 and the lid 412 to prevent liquid from leaking; while ensuring the suction effect of the suction device 42 on the filtrate to ensure control of the filtration rate.

The cover 412 is fixed on the bottom case 410 by ultrasonic welding, and the sealing effect is good. In other embodiments, the cover 412 can be detachably mounted on the bottom case 410 by a snap connection or a screw connection. In this regard, the second filter layer 44 is a replaceable bag filter material, and when the second filter layer 44 reaches a predetermined usage time, the cover 412 is opened, a new second filter layer 44 is replaced, and then the cover 412 is closed. The filter unit 40 improves the utilization of other structures and reduces costs by only replacing the filter material.

The filter unit 40 further comprises a third filter layer 45, the third filter layer 45 being located between the second filter layer 44 and the outlet opening 404. The third filter layer 45 filters the liquid for the third time, so as to ensure the filtering effect of the liquid output by the filter unit 40. The bottom of this drain pan 410 is equipped with many fins, and these many fins are radial evenly distributed, and it can play the effect of supporting third filter layer 45, can also play the effect of water conservancy diversion filtrating. The plurality of ribs may be 6 ribs, which are uniformly distributed around the liquid outlet 404 and extend along the radial direction.

The second filter layer 44 comprises a filter cotton layer and a filter material layer, the filter material layer is located between the filter cotton layer and the third filter layer 45, and the filter material layer comprises granular filter material or powdery filter material. The second filter layer 44 acts as a filter element and plays a central role in filtering the contaminated liquid. The filtering material layer is manganate, but not limited thereto.

In other embodiments, the second filter layer 44 may be a combination of one or more of cotton fabric, wool fabric, silk fabric, synthetic fiber fabric, glass fiber fabric, filter paper, filter felt, filter pad, porous ceramic, sintered porous plastic, sintered aluminum oxide, glass filter media, loose filter media, diatomaceous earth, expanded perlite powder, cellulose, sand, charcoal powder, activated carbon.

This third filter layer 45 is the filter screen, can prevent that the filtering material on filtering material layer from being taken away by liquid, and avoids it to mix in filtrating, guarantees the filter effect.

Referring to fig. 5 and 12, in order to facilitate the detachment and installation of the filter unit 40, the robot housing 1 is provided with a mounting groove 120, and the filter unit 40 is detachably disposed in the mounting groove 120. Further, the filter unit 40 of the present embodiment is additionally provided with a structure convenient for detachment and installation, and the robot housing 1 is provided with a corresponding matching structure 122, so that when the filter unit 40 reaches the service life, a user can conveniently replace the new filter unit 40 by himself.

Referring to fig. 8 to 11, the filter unit 40 further includes a telescopic mechanism 46 disposed on the housing 41, the telescopic mechanism 46 includes a protruding structure 460 and an operating structure 462, the protruding structure 460 is connected to the operating structure 462, the protruding structure 460 is telescopically disposed relative to the housing 41, and the operating structure 462 is used for operating to control the telescopic movement of the protruding structure 460. The mounting groove 120 is provided with a matching structure 122, the protruding structure 460 is matched with the matching structure 122, and when the protruding structure 460 extends out, the protruding structure 460 is limited in the mounting groove 120 by the matching structure 122; when the projection structure 460 is contracted, the projection structure 460 is separated from the fitting structure 122, and the filter unit 40 can be removed from the mounting groove 120.

Referring to fig. 12, in order to conveniently pick and place the filter unit 40, the mounting groove 120 is disposed at the top of the robot housing 1 and directly exposed on the top surface of the housing 41, and a user directly operates the operation structure 462 at the top of the cleaning robot to pick and place the filter unit 40. In other embodiments, the mounting groove 120 is provided at the top of the robot housing 1, but not at the top surface, but below the flip cover at the top, so as to make the top surface of the robot more beautiful. In other embodiments, the mounting groove 120 may be provided at the side or the bottom of the robot housing 1.

More specifically, the mounting groove 120 is provided on the top surface of the face cover 12 of the robot housing 1.

The protruding structure 460 includes a tongue telescopically arranged with respect to the sidewall of the housing 41, and correspondingly, the mating structure 122 is a lateral slot. When the convex tongue extends out, the convex tongue is limited in the lateral clamping groove; when the tongue is contracted, the tongue is positioned outside the lateral clamping groove. In other embodiments, the protruding structure 460 may be a retractable protrusion disposed on the top of the filter unit 40, and the filter unit 40 is detachably mounted on the side of the robot housing 1 by the protrusion.

The operating mechanism 462 includes a handle disposed to be exposed at the top of the housing 41, one end of the handle being connected to the tab. The telescoping mechanism 46 further includes a resilient member 464, the resilient member 464 being compressed between the other end of the buckle and the inner wall of the housing 41. When the filter unit 40 is removed, the user operates the handle to compress the elastic member 464, and the tongue is contracted to remove the filter unit 40. In addition, the handle is arranged on the top of the shell 41, so that a user can operate the handle from the top of the robot shell 1 conveniently.

The buckle and the convex tongue are integrally formed, and the manufacture and the installation are convenient. In other embodiments, the gripping tab and the tongue may be two separate pieces connected by a connecting member.

The cover 412 has a movable cavity 465 and an opening 466 communicating with the movable cavity 465, the handle is movably received in the movable cavity 465 and exposed through the opening 466, and a user operates the handle through the opening 466 to slide the handle back and forth along the movable cavity 465 to drive the tongue to move telescopically.

Specifically, the second cover 414 of the cover 412 includes a middle cover 415 and a top cover 416 covering the middle cover 415, the movable chamber 465 is formed between the middle cover 415 and the top cover 416, and the opening 466 penetrates the top cover 416. Part of the liquid inlet passage 400 is formed by splicing the middle cover piece 415 and the top cover piece 416.

During assembly, the top cover part 416 and the middle cover part 415 are firstly ultrasonically welded to form the second cover part 414, then the middle cover part 415 of the second cover part 414 is matched with the first cover part 413 in a dispensing manner to form the cover body 412, and the sealing performance of the joint can be ensured by adopting the ultrasonic welding and dispensing connection manner, so that the sealing performance of the shell 41 is ensured.

The handle comprises a side portion 467 and a buckle portion 468, wherein the side portion 467 extends out of the movable cavity 465, the buckle portion 468 is formed by extending from the top end of the side portion 467 towards one end far away from the elastic member 464, and the buckle portion 468 is provided to facilitate the user to operate the handle.

Specifically, the protruding structure 460 includes two opposite protruding tongues, each protruding tongue is telescopically arranged with respect to the sidewall of the housing 41, and the two protruding tongues are more effective and stable in installation and fixation.

Specifically, the operation structure 462 includes two opposite clasps, each of which is exposed from the top of the housing 41, and one end of each of the clasps is connected to a tongue. The retractable mechanism 46 further includes two resilient members 464, each resilient member 464 being compressed between the other end of a buckle and the inner wall of the housing 41. The two handles are arranged oppositely, so that a user can conveniently press the two handles inwards in opposite directions, and the filtering unit 40 can be conveniently taken out and placed.

Referring to fig. 1 and 2, in the present embodiment, the liquid supply system 5 includes a liquid storage tank 50, a water pump (not shown) and a liquid outlet structure 52, the liquid storage tank 50 is communicated with the suction device 42, the water pump is communicated with the liquid storage tank 50, the liquid outlet structure 52 is communicated with the water pump and is disposed corresponding to the roller 20, that is, the liquid filtered by the suction device 42 enters the liquid storage tank 50 to be stored, the liquid in the liquid storage tank 50 is output to the liquid outlet structure 52 under the action of the water pump and is sprayed onto the roller 20 through the liquid outlet structure 52 to wet the roller 20 for washing and wiping the ground.

Specifically, the reservoir 50 is disposed in a recess 124 of the cover 12 and is connected to a water pump disposed on the chassis 10 or on the inner surface of the cover 12 via a pipe.

In other embodiments, the liquid supply system 5 may only have the liquid outlet structure 52, that is, the filtered liquid is directly output to the liquid outlet structure 52 through the suction device 42. The liquid supply system 5 may also include a liquid storage tank 50 and a liquid outlet structure 52, wherein the liquid in the liquid storage tank 50 can be transferred to the liquid outlet structure 52 by gravity and can be dripped onto the roller 20 by the liquid outlet structure 52.

The present invention also provides a base station for washing a cleaning member of a cleaning robot, which may be, but is not limited to: a rotating disc type mop, a mop cloth, a roller or a crawler type cleaning cloth.

Referring to fig. 13, in an embodiment, the base station includes a base 7 and a filter system 4 disposed on the base 7, and the filter system 4 includes a filter unit 40 and a suction device 42. The base body 7 has a cleaning bath 70 for cleaning the cleaning elements. The filtering unit 40 is provided to the base 7 for filtering the contaminated liquid in the cleaning tank 70. The suction device 42 is disposed on the base 7 and communicates with the filter unit 40 for sucking the liquid filtered by the filter unit 40.

This washing tank 70 washs dirty liquid that cleaning member produced under suction device 42's effect, filters in getting into filter unit 40, and the liquid after the filtration can be through suction device 42 recycle again, for example reenter in washing tank 70 or export to the receiver tank in, and realized dirty liquid recovery, circulation, recycle, need not the dirty liquid in the user pours out washing tank 70, has promoted user experience, has practiced thrift the water.

The filter unit 40 is directly communicated with the cleaning tank 70 through a pipeline, and the contaminated liquid in the cleaning tank 70 directly reaches the filter unit 40 through the pipeline. In other embodiments, a dirty liquid tank for storing dirty liquid may be disposed between the filtering unit 40 and the cleaning tank 70, a water pump may be further added between the dirty liquid tank and the cleaning tank 70, the dirty liquid tank may be disposed higher than the filtering unit 40, and the dirty liquid may flow into the filtering unit 40 by gravity.

The base body 7 is provided with a receiving groove, and the filtering unit 40 is detachably arranged in the receiving groove, so that a user can conveniently replace the filtering unit 40.

Referring to fig. 8 to 11, the filter unit 40 includes a housing 41, a first filter layer 43, and a second filter layer 44. The housing 41 has a liquid inlet channel 400 and a liquid outlet channel 403, the liquid inlet channel 400 has a liquid inlet 401 and a liquid inlet 402, the liquid inlet 401 is communicated with the cleaning tank 70, the liquid outlet channel 403 has a liquid outlet 404 and a liquid outlet 405, and the liquid outlet 405 is communicated with the suction device 42. The first filter layer 43 is disposed in the housing 41 and corresponds to the inlet 402. The second filter layer 44 is disposed in the housing 41, on a side of the first filter layer 43 away from the inlet 402, and is disposed corresponding to the outlet 404.

This first filter layer 43 carries out prefilter to the foul solution, and this second filter layer 44 filters once more, and improves the filter effect, realizes retrieving, recycling the foul solution to the filtration of foul solution by this filter unit 40, and the user need not to pour out the foul solution, has promoted user experience, and has practiced thrift the water consumption.

The housing 41 is provided with a first accommodating cavity 430 and a second accommodating cavity 440, and the liquid inlet 402, the first accommodating cavity 430, the second accommodating cavity 440 and the liquid outlet 404 are sequentially communicated. The first filter layer 43 is accommodated in the first accommodating chamber 430, and the second filter layer 44 is accommodated in the second accommodating chamber 440. Therefore, the dirty liquid flows through the liquid inlet 402, the first accommodating chamber 430, the second accommodating chamber 440 and the liquid outlet 404 in sequence, is filtered by the first filter layer 43 in the first accommodating chamber 430, and is filtered by the second filter layer 44 in the second accommodating chamber 440. In the first receiving chamber 430 and the second receiving chamber 440, in addition to a space in which the filter material is placed, other spaces may temporarily store the liquid, thereby increasing a dirty liquid volume.

The containing groove is provided with a positioning structure. The filter unit 40 further comprises a telescoping mechanism 46 provided in the housing 41, the telescoping mechanism 46 comprises a protruding structure 460 and an operating structure 462, the protruding structure 460 is connected with the operating structure 462, the protruding structure 460 is telescopically arranged relative to the housing 41 and cooperates with the positioning structure, and the operating structure 462 is used for operating to control the telescopic movement of the protruding structure 460.

The protruding structure 460 includes a tongue telescopically arranged with respect to the sidewall of the housing 41, and correspondingly, the positioning structure is a lateral slot. When the convex tongue extends out, the convex tongue is limited in the lateral clamping groove; when the tongue is contracted, the tongue is positioned outside the lateral clamping groove.

The operating mechanism 462 includes a button disposed to expose the top of the housing 41, one end of the button being connected to the tab. The telescoping mechanism 46 further includes a resilient member 464, the resilient member 464 being compressed between the other end of the buckle and the inner wall of the housing 41. When the filter unit 40 is removed, the user operates the handle to compress the elastic member 464, and the tongue is contracted to remove the filter unit 40. In addition, the handle is arranged on the top of the shell 41, so that a user can operate the handle from the top of the robot shell 1 conveniently.

To facilitate the taking and placing of the filter unit 40, the receiving slot is disposed on the top of the base 7 and directly exposed on the top surface of the base 7, and the user directly operates the operation structure 462 on the top of the base 7 to take out and place the filter unit 40. In other embodiments, the receiving slot is disposed on the top of the base 7, but not on the top, but under the flip cover on the top, so as to make the top of the base 7 more beautiful. In other embodiments, the receiving groove may be provided at the side or the bottom of the base 7.

More specifically, the housing groove is provided on the top surface of the base 7.

The filtering unit 40 of the base station in this embodiment adopts all technical solutions of the filtering unit 40 of the cleaning robot in the above embodiments, so that all the beneficial effects brought by the technical solutions of the filtering unit 40 of the cleaning robot in the above embodiments are also achieved, and as for other aspects of the filtering unit 40 of the base station in this embodiment, other aspects are basically the same as those of the filtering unit 40 of the cleaning robot in the above embodiments, and therefore, no further description is given here.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A filter unit for a cleaning appliance, the filter unit comprising:

2. The filter unit according to claim 1, wherein the housing is provided with a first accommodating cavity and a second accommodating cavity, and the liquid inlet, the first accommodating cavity, the second accommodating cavity and the liquid outlet are communicated in sequence;

the first filter layer is accommodated in the first accommodating cavity;

the second filter layer is contained in the second containing cavity.

3. The filter unit of claim 2, wherein the housing comprises:

the bottom shell is provided with the second accommodating cavity and the liquid outlet channel; and

the cover body covers the bottom shell, the cover body is provided with the liquid inlet channel and the first accommodating cavity, the cover body comprises an interlayer, and the interlayer is hollowed to be communicated with the first accommodating cavity and the second accommodating cavity.

4. The filter unit of claim 3, wherein the cover comprises:

the first cover piece is covered on the bottom shell and provided with a groove, the first accommodating cavity is formed in the groove, and the interlayer is formed at the bottom of the groove; and

and the second cover part is covered on the first cover part, and the liquid inlet channel is formed on the second cover part.

5. The filter unit of claim 1, wherein the housing comprises a base and a lid that fits over the base;

the cover body is provided with a first accommodating cavity, the liquid inlet channel is formed in the cover body, and the first filter layer is accommodated in the first accommodating cavity;

the bottom shell is provided with a second accommodating cavity, the liquid outlet channel is formed in the bottom shell, and the second filter layer is accommodated in the second accommodating cavity;

the liquid inlet channel, the first accommodating cavity, the second accommodating cavity and the liquid outlet channel are communicated in sequence.

6. The filter unit of claim 5, wherein the cover comprises:

and the second cover piece is covered on the first cover piece, and the liquid inlet channel is formed on the second cover piece.

7. The filter unit according to any one of claims 1 to 6, wherein the first filter layer is a filter screen.

8. A filter unit as claimed in any one of claims 1 to 6, characterised in that the second filter layer is a replaceable bag filter material.

9. The filter unit according to any one of claims 1 to 6, further comprising:

the third filter layer is positioned between the second filter layer and the liquid outlet.

10. The filter unit according to claim 9, wherein the second filter layer comprises a filter cotton layer and a filter material layer, the filter material layer being located between the filter cotton layer and the third filter layer, the filter material layer comprising granular filter material or powdered filter material.

11. The filter unit of claim 10, wherein the third filter layer is a filter screen.

12. The filter unit of claim 1, further comprising:

the convex tongue is arranged on the side wall of the shell in a telescopic mode.

13. A filtration system, comprising:

a filter unit according to any one of claims 1 to 12; and

and the suction device is communicated with the liquid outlet of the filtering unit and is used for sucking the liquid output by the liquid outlet.

14. A cleaning robot comprising a robot housing, characterized in that the cleaning robot further comprises:

a filter system according to claim 13, mounted to the robot housing.

15. The cleaning robot of claim 14, wherein a top of the robot housing is provided with a mounting groove, and the filter unit is detachably disposed in the mounting groove.

16. A base station comprising a base body, wherein the base station further comprises:

a filter system according to claim 13, wherein the filter system is mounted to the substrate.

17. The base station of claim 16, wherein the base body has a receiving groove formed at a top thereof, and the filter unit is detachably disposed in the receiving groove.