CN217938108U - Surface cleaning system - Google Patents

Abstract

The utility model relates to a surface cleaning system, including the surface cleaning device who has the cleaning head, be used for wasing surface cleaning device's washing subassembly, two rotatable turntables that distribute about being are equipped with to the bottom of cleaning head, are equipped with the wiper on the carousel, be equipped with the rotatory drive assembly of drive carousel in the cleaning head, the cleaning assembly includes the cleaning tank, is equipped with cleaner, washing liquid in the cleaning tank, the cleaning head is placed in the washing tank, wiper and cleaning member butt, the washing tank is equipped with horizontal locating part, and drive assembly drive wiper rotates on the cleaner, horizontal locating part and cleaning head cooperation, so that the horizontal reciprocating swing of cleaning head in the washing tank. Adopt this technical scheme to make the carousel also produce certain sliding on the horizontal direction of carousel or the radial direction when driving the wiper scraping washing, the cleanness of the clean looks complex of sliding with the level of circumferential direction is close to the regional washing of rotation center with the reinforcing to clean wiper.

Description

Surface cleaning system

Technical Field

The utility model relates to a domestic cleaning appliance field especially relates to a be used for clear surface cleaning system.

Background

The floor mopping equipment on the market at present usually adopts a turntable structure, specifically, the bottom of a cleaning head is provided with the side-by-side arranged turntables, and the turntables are provided with mop cloth which is contacted with the surface to be cleaned and is in an approximate shape. However, the mop is manually cleaned by the user after mopping is completed, especially when the floor is polluted to a high degree, the floor is difficult to clean if the mop is not cleaned in time, and the dirty mop is touched by hands during manual cleaning, which is troublesome, and the cleaning efficiency is reduced because the mop needs to be manually replaced and cleaned back and forth.

In view of the above, the prior application patent of the applicant discloses a cleaning barrel used with the floor mopping device, wherein the surface cleaning device is fixedly arranged in the cleaning barrel, and the rotating disc rotates to drive the wiping part to rotate and scrape on the cleaning part by taking the rotating shaft of the rotating disc as a rotating center for cleaning, but in the cleaning mode, the area of the wiping part close to the rotating center is poor in cleaning effect relatively in an outer area due to the fact that the rotating path is short, the whole cleaning effect is influenced, and the improvement space is still further improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving above-mentioned technical problem at least partially, provide a washing subassembly for mopping ground equipment.

The utility model adopts the technical scheme as follows:

the utility model provides a surface cleaning system, includes the surface cleaning device who has the cleaning head, is used for wasing surface cleaning device's washing subassembly, the bottom of cleaning head is equipped with two rotatable turntables that distribute about being, is equipped with the wiper on the carousel, be equipped with the rotatory drive assembly of drive carousel in the cleaning head, the cleaning assembly includes the cleaning tank, is equipped with wiper, washing liquid in the cleaning tank, the cleaning head is placed in the washing tank, wiper and cleaning member butt, the washing tank is equipped with horizontal locating part, and drive assembly drive wiper rotates on the wiper, horizontal locating part and cleaning head cooperation, so that the horizontal reciprocating swing of cleaning head in the washing tank, wherein, the rotational speed scope of carousel is 100 ~ 260r/min.

Furthermore, the cleaning head comprises a shell, and the horizontal limiting piece is matched with the shell of the cleaning head so that the cleaning head horizontally swings in a reciprocating manner in the cleaning groove.

Further, the horizontal limiting part is a side wall of the cleaning tank.

Furthermore, the horizontal limiting part is matched with the rotary disc, so that the cleaning head horizontally swings in a reciprocating manner in the cleaning groove.

Further, horizontal locating part is the boss, the boss is followed the preceding lateral wall and the back lateral wall of washing tank extend to the inboard respectively, are equipped with the relative spacing face that sets up on the boss, spacing face is used for injecing the front and back both sides of casing.

Further, the distance between the limiting surface and the shell is smaller than the distance between the rotary disc and the cleaning tank in the front-back direction.

Furthermore, a water outlet is arranged on the cleaning tank, the water outlet is arranged at the transition part of the boss and the rear side wall of the cleaning tank, and the rotating direction of the rotary disc is relatively inward in the advancing cleaning direction of the surface cleaning device.

Furthermore, the cleaning piece is provided with a scraping and washing component which is used for being abutted against the cleaning piece, and the scraping and washing components corresponding to the two rotating discs are asymmetrically arranged relative to the central axial plane of the cleaning head.

Further, the projection part of the rotating disc in the vertical direction is exposed out of the shell, and the diameter of the wiping piece is larger than that of the rotating disc.

Further, belt cleaning device still includes rotatable valve rod, the valve rod includes drive end and driven end, and the bottom of washing tank is equipped with the drain, and the driven end of valve rod is equipped with the valve body that is used for sealing the outlet, the drive end and the mop butt of valve rod, and the mop drives the valve rod and rotates in order to open during the carousel reversal the outlet.

The beneficial effects of this technical scheme include:

the cleaning head is horizontally and reciprocally swung in the cleaning tank by arranging the horizontal limiting piece in the cleaning tank and matching the horizontal limiting piece with the cleaning head. The cleaning wiping piece on the cleaning head is rotated and scraped on the cleaning piece by taking the rotating shaft of the turntable as a rotating center, and certain slippage is also generated in the horizontal direction or the radial direction of the turntable, so that the circumferential rotation cleaning and the horizontal slippage cleaning are combined, particularly, the scraping and cleaning path of the cleaning wiping piece close to the rotating center area is increased, the cleaning intensity of the area is enhanced, and the whole cleaning effect of the cleaning wiping piece can be improved. And the cleaning head drives the cleaning water flow to fluctuate in the cleaning tank in the oscillating process in the cleaning tank, and can also realize the flushing and cleaning of dirt on the wiping part.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

FIG. 1 is a schematic view of a floor care appliance and cleaning assembly according to the present invention;

FIG. 2 is a schematic view of the cleaning head of the present invention in a state of swinging in the cleaning tank;

FIG. 3 is a schematic view showing another state of the cleaning head of the present invention as it swings in the cleaning tank;

FIG. 4 is a schematic view of the cleaning head of the present invention in still another state during its swinging within the cleaning tank;

FIG. 5 is a schematic view showing a state where the cleaning head oscillates in the cleaning bath according to the first embodiment;

FIG. 6 is a schematic view showing a state where the cleaning head oscillates in the cleaning bath according to the first embodiment;

FIG. 7 is a schematic view showing another state of the cleaning head oscillating in the cleaning tank according to the first embodiment;

FIG. 8 is a schematic view showing the structure of a cleaning member in the second embodiment;

FIG. 9 is an enlarged partial view of portion A of FIG. 8;

FIG. 10 is a schematic view showing the structure of a valve stem according to the third embodiment;

FIG. 11 is a schematic top view showing a cleaning assembly according to a third embodiment;

FIG. 12 is a schematic view of the cross-sectional structure in the direction N-N in FIG. 11;

FIG. 13 is an enlarged partial view of portion B of FIG. 12;

FIG. 14 is a schematic top view of a cleaning assembly according to another embodiment;

FIG. 15 is a schematic view of a valve stem according to another mode of the third embodiment;

fig. 16 is a partially enlarged schematic view of a portion C in fig. 14.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

It is to be understood that the described embodiments are merely some of the embodiments of the present application and not all embodiments, and that the following description of at least one exemplary embodiment is merely illustrative in nature and should not be taken as limiting the present application and its applications.

It will be appreciated that the floor scrubbing apparatus of this embodiment may be an autonomous mobile cleaning robot that is capable of autonomous movement and cleaning without human intervention. The autonomous mobile cleaning robot may have a cleaning and dust-collecting function. Specifically, the mopping robot is also provided with a base station for docking and charging the mopping robot.

Referring to fig. 1 to 4, the surface cleaning apparatus 100 exemplarily provided in the figures includes a handle 110, a pivot assembly 130, and a cleaning head 120, wherein the handle 110 is hinged to a rear end of the cleaning head 120 through the pivot assembly 130, the cleaning head 120 includes a housing 121, a driving assembly (not shown) is disposed in the housing 121, a rotating disc 122 is disposed at a bottom of the cleaning head 120, and an output shaft of the driving assembly extends from the bottom of the housing 121 and is fixedly connected to the rotating disc 122. The number of the rotating disks 122 in this embodiment is two, and the two rotating disks are respectively arranged on the left and right of the bottom of the cleaning head 120. The bottom of the turntable 122 is provided with a wiper which is fixedly or removably arranged at the bottom of the turntable 122. The wiping piece can be made of a cleaning pad, a cleaning cloth and other materials with water absorption and fluff, and the specific shape can be a circle, a square or any other shape which is matched with the shape of the rotating disc.

In addition, a cleaning assembly 200 for the surface cleaning apparatus 100 is provided, the cleaning assembly 200 includes a cleaning tank 210, the cleaning tank 210 includes a horizontal limiting member and a cleaning cavity for holding a cleaning solution, a cleaning member 211 is disposed in the cleaning tank 210, and the cleaning member 211 may be integrated with the cleaning tank or may be separated from the cleaning tank 210. After the surface cleaning device 100 finishes cleaning, the cleaning head 120 of the surface cleaning device 100 is placed in the cleaning tank 210 to enable the cleaning piece to abut against the cleaning piece 211, the driving device drives the rotary disc 122 to drive the cleaning piece to rotate on the cleaning piece 211, so that the rotary disc 122 drives the cleaning piece and the cleaning piece to scratch so as to clean dirt attached to the cleaning piece when rotating, and the horizontal limiting piece is matched with the cleaning head 120 to enable the cleaning head 120 to horizontally swing in the cleaning tank in a reciprocating manner. It is understood that the horizontal reciprocating swing may be a reciprocating swing in a left-right direction, or a reciprocating swing in a front-back direction, and fig. 2 to 4 are schematic diagrams illustrating a state where the cleaning head is reciprocally swung in a substantially front-back direction.

In this embodiment, a horizontal position-limiting member is disposed in the cleaning tank, and the horizontal position-limiting member is engaged with the cleaning head, so that the cleaning head horizontally reciprocates in the cleaning tank. So, the last cleaning and wiping piece of cleaning head is except using the axis of rotation of carousel to rotate the scraping on cleaning piece as the rotation center, also produces certain slippage in the horizontal direction of carousel or radial direction for the clean and compound mutually that slide of circumferential direction rotation, especially increased cleaning and wiping piece and be close to the regional scraping and washing route of rotation center and strengthened the washing intensity to this region, can promote cleaning and wiping piece's whole cleaning performance. And the cleaning head drives the cleaning water flow to fluctuate in the cleaning tank in the oscillating process in the cleaning tank, and the dirt on the wiping piece can be washed and cleaned.

Furthermore, the rotating speed range of the rotating disc is 100-260 r/min.

When the rotating speed of the rotating disc is lower than 100r/min, the swinging effect of the cleaning head is poor, and the scraping and cleaning effect of the wiping piece is influenced; when the rotating speed of the rotating disc is higher than 260r/min, the swinging of the cleaning head is too violent, and the stable cleaning of the surface cleaning device in the cleaning groove is influenced. Preferably, the rotating speed range of the rotating disc is 130-170 r/min.

Specifically, the driving component in this embodiment is a motor. In an optional mode, a motor is arranged in the cleaning head, an output shaft of the motor is output from two ends of the motor and is in transmission connection with the rotary discs respectively, and the motor controls the two rotary discs to simultaneously realize forward rotation or reverse rotation. In another optional mode, two motors are arranged in the cleaning head, and output shafts of the motors are respectively connected with the rotating disc. Therefore, the steering of the two turntables can be independently and respectively controlled, and when one turntable rotates, the other turntable stops; or when one rotating disc rotates forwards, the other rotating disc rotates backwards, and the like, so as to meet the actual needs of users.

The first embodiment is as follows:

in this embodiment, the horizontal limiting member is matched with the housing of the cleaning head 120, so that the cleaning head horizontally reciprocates in the cleaning tank. Specifically, the housing 121 of the cleaning head includes a front wall 121a and a rear wall 121b, and the cleaning tank 210 includes a front wall 210a and a rear wall 210b.

Thus, the matching position of the horizontal limiting piece and the shell is relatively higher than the scraping surface of the wiping piece and the cleaning piece, the cleaning head is prevented from being separated from the cleaning groove, so that the cleaning head is more stable when horizontally swinging in the cleaning groove,

in an implementation manner of this embodiment, the horizontal limiting member is a side wall of the cleaning tank. Because the washing space in the washing tank has been injectd to the washing tank lateral wall, through setting up the lateral wall of washing tank to horizontal locating part, can be better inject the cleaning head reciprocating swing in the washing tank.

In order to further enhance the cleaning effect, the gap between the sidewall of the cleaning tank and the housing of the cleaning head is preferably in the range of 2 to 15mm.

In a preferred implementation manner of this embodiment, the horizontal limiting member is a boss, the boss includes a front boss 210aa and a rear boss 210bb, the boss 210aa is approximately located on a central axis surface of the cleaning head in the front-rear direction and extends inward from the front sidewall 210a and the rear sidewall 210b of the cleaning tank, the front boss 210aa is provided with a limiting surface S1, the rear boss 210bb is provided with a limiting surface S2, and the limiting surface S1 and the limiting surface S2 are oppositely disposed to limit the front side and the rear side of the housing. It is understood that in the present embodiment, only the front boss 210aa or the rear boss 210bb may be provided.

Through inciting somebody to action horizontal locating part sets up to the boss, sets up relative boss through preceding lateral wall and the back lateral wall at the washing tank, can be better carry on spacingly to both sides around the casing, and spacing area of contact between casing and the washing tank lateral wall when reducing the cleaning head swing further guarantees the stability when the cleaning head swings. In addition, the sliding amplitude in the front-back horizontal direction between the cleaning wiping piece and the cleaning piece is controlled by the distance between the limiting surface and the shell, the cleaning turntable is prevented from impacting the side wall of the cleaning tank to enable the surface cleaning device to be unstably placed in the cleaning tank to cause overturning, the center of the cleaning tank is enabled to approach the middle part, and the cleaning tank is prevented from being toppled due to swinging impact of the cleaning head.

Further, the distance between the limiting surface and the shell is smaller than the distance between the rotary disc and the cleaning groove in the front-back direction. Specifically, the distance between the limiting surface and the shell is smaller than the distance between the rotary table and the cleaning tank in the front-back direction, and the distance between the limiting surface and the swing center of the cleaning head is closer, so that the reciprocating swing amplitude of the cleaning head in the horizontal front-back direction in the cleaning tank is restricted by the limiting surface, and the reciprocating swing amplitude of the cleaning head is easier to control. As shown in fig. 5 to 8, during the forward and backward swinging of the cleaning head, the front sidewall 120a and the rear sidewall 120b of the housing abut against the front boss 210aa or the rear boss 210bb of the cleaning tank 210, respectively.

Preferably, the cleaning piece can be dismantled with the washing tank components of a whole that can function independently and be connected, be equipped with the part of scraping on the cleaning piece, the part of scraping is fixed or swing joint with the cleaning piece, will surface cleaning device's cleaning head place in when wasing the intracavity wiper and scrape the part butt and rub.

Furthermore, the cleaning piece is provided with a scraping and washing component which is used for being abutted against the cleaning piece, and the scraping and washing components corresponding to the two rotating discs are asymmetrically arranged relative to the central axial plane of the cleaning head.

The scraping and washing parts corresponding to the two turnplates are arranged asymmetrically about the middle axial plane of the cleaning head, so that the friction force between the left and right turnplates and the scraping and washing parts is different during washing, and the reciprocating swing of the cleaning head in the washing tank is increased to improve the washing effect.

Further, the cleaning tank 210 is further provided with a water outlet 212, the water outlet 212 is disposed at a transition portion between the boss and the rear sidewall 210bb of the cleaning tank, and the rotation direction of the rotary plate is relatively inward in the forward cleaning direction of the surface cleaning apparatus. Specifically, the rotating direction of the rotating disc of the rear side wall 210b of the cleaning tank and the rear side wall 210bb of the cleaning tank is shown by the arrow in fig. 5.

In this embodiment, locate through with the outlet the transition portion of lateral wall behind boss and the washing tank, just be in the direction of rotation of carousel is relative inwards on the clean direction of advance of surface cleaning device, makes wiper member on the carousel absorbs water and scrapes with the wiper member simultaneously, and partial sewage on the wiper member is discharged through the outlet because of rotating the centrifugal force effect when rotating the washing to carry out water level control. In addition, cleaning head reciprocating swing makes to lead to wasing bucket inner wall drain outlet water inhomogeneous when wasing to increase the resistance that the water in the washing tank spilled over from the outlet, wash the inside water yield of bucket when guaranteeing to wash, improve clean efficiency.

Further, the projection part of the rotating disc in the vertical direction is exposed out of the shell, and the diameter of the wiping piece is larger than that of the rotating disc.

On one hand, the projection part of the turntable in the vertical direction is exposed out of the shell, so that the wiping area during cleaning can be increased; on the other hand, the diameter of the wiping piece is larger than that of the rotary disc, so that the wiping area can be increased, the cleaning head can exceed the rotary disc part to form buffer during swing cleaning, and the rotary disc is prevented from colliding with the side wall of the cleaning groove.

The second embodiment:

as shown in fig. 8 and 9, the present embodiment is different from the first embodiment in that: the horizontal limiting part is matched with the rotary disc so that the cleaning head horizontally swings in a reciprocating mode in the cleaning groove.

Preferably, the horizontal position-limiting members are two position-limiting columns 211a, which are disposed on the cleaning member 211, and a position-limiting groove (not shown) corresponding to the position-limiting columns 211a is disposed at the bottom of the rotating plate 122, and when the surface cleaning apparatus is placed in the cleaning tank, the position-limiting columns extend into the position-limiting groove to cooperate with each other, so that the cleaning head horizontally swings back and forth in the cleaning tank.

Example three:

the difference between this embodiment and the first and second embodiments is: the cleaning assembly in this embodiment further comprises a rotatable valve rod 230, the valve rod 230 is at least partially disposed in the cleaning tank, the valve rod 230 comprises a driving end 231 and a driven end 232, a sewage outlet 213 is disposed at the bottom of the cleaning cavity, a valve body for closing the sewage outlet 213 is disposed at the driven end 232 of the valve rod 230, the driving end 231 of the valve rod 230 abuts against a mop, and the mop drives the valve rod 230 to rotate to open the sewage outlet 213 when the rotary disc rotates reversely. Specifically, in this embodiment, the rotary disc on the left side of the cleaning head corresponds to the valve rod 230, the mop drives the valve rod 230 to rotate so as to open the sewage outlet 213 when the rotary disc on the left side of the cleaning head rotates reversely, and when the rotary disc on the left side of the cleaning head rotates normally, the driving end 231 of the valve rod 230 is forced by the horizontal direction of the mop to move towards the direction of closing the sewage outlet 213, and after the sewage outlet 213 is closed, the valve rod 230 slips relative to the mop so that the valve body further compresses and closes the sewage outlet 213.

In particular, in this embodiment, the driving end 231 of the valve stem abutting the mop also forms at least part of the scrubbing member.

In the embodiment, the rotating disc rotates forwards during cleaning, the valve body at the driven end of the valve rod seals the sewage discharge port, and when the rotating disc rotates, the mop cloth is contacted with cleaning water in the cleaning and rotates and scrapes the cleaning part, so that dirt attached to the mop cloth is removed; after the cleaning is finished, the rotary disc is reversed, and the mop drives the valve rod to rotate, so that the drain outlet is automatically opened, and sewage is discharged out of the cleaning tank. In the whole process, the valve rod directly through the positive and negative rotation of the rotary table drives and abuts against the mop to control the opening and closing of the sewage draining port, a user does not need to manually participate in drainage, the cleaning automation is realized, and the user experience is improved.

Preferably, the valve stem 230 is integrally located in the wash bowl, and the valve stem 230 is rotatably connected to the wash bowl 210. Specifically, a raised valve seat 214 is provided on the inner bottom wall of the sink, and the valve stem 20 is pivotally connected to the valve seat 214.

In an alternative form of this embodiment, the pivot center axis of the valve shaft 230 is substantially perpendicular to the horizontal plane so that the valve body is horizontally moved to open or close the sewage drain.

Preferably, in this embodiment, the pivot center axis of the valve rod 230 is substantially parallel to the horizontal plane so that the valve body moves up and down to open or close the drain outlet 213.

In this embodiment, the cleaning member 210 is further provided with a hollow through hole, and the driving end 231 of the valve rod 230 passes through the through hole and is higher than the scraping and washing member.

Referring to fig. 2 to 6, in one mode of the present embodiment, the cleaning assembly has a first plane passing through the pivot center axis o-o and perpendicular to a horizontal plane, and the driving end 231 and the driven end 232 of the valve body 230 are located on opposite sides of the first plane. Specifically, an included angle between the power arm of the driving end 231 and the resistance arm of the driven end 232 of the valve rod 230 is an obtuse angle.

Preferably, in the present embodiment, the cleaning has a first plane passing through the pivot center axis o-o and perpendicular to a horizontal plane, and the driving end 231 and the driven end 232 of the valve stem 230 are located on the same side of the first plane.

When the mop is placed on the cleaning assembly, the driving end of the valve rod is abutted with the mop cloth to be subjected to downward force, so that the valve body can better seal the sewage discharge outlet. In addition, still make the whole focus of valve rod also be located and be close to outlet one side, it can reset closed drain by the action of gravity when not placing surface cleaning device itself, simple structure is reliable.

When the bottom surface cleaning device is not placed on the cleaning assembly, the valve body is required to be kept to seal the sewage draining outlet, so that a user can add cleaning water into the cleaning cavity before use, and for this reason, a resetting member of the valve rod is also arranged on the cleaning barrel so as to be capable of automatically resetting when cleaning is finished.

In one mode of this embodiment, a torsion spring 216 is disposed on the valve seat 212, and the torsion spring 216 enables the valve rod 230 to return to close the sewage outlet 213.

In the present embodiment, the pivot center axis o-o of the valve stem 230 passes through the rotation center axis of the dial. Therefore, the whole force arm of the valve rod when rotating is perpendicular to the radius from the abutting position of the valve rod on the mop cloth to the rotating center, thereby reducing component force loss in other directions when driving the valve rod to rotate and improving the reliability of opening the water outlet.

It will be appreciated that where the surface cleaning apparatus is a self-propelled robot, the cleaning assembly may be separate from the charging base station or may be located on the base station so that the cleaning assembly is automatically parked in a position corresponding to the base station after the floor cleaning operation is completed, and the cleaning assembly is automatically charged and cleaned.

In the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "connected" may be directly connected or indirectly connected through an intermediate. The terms "upper", "lower", and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or units must have a particular orientation, configuration, and operation in a particular orientation. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Claims (10)

1. The utility model provides a surface cleaning system, includes the surface cleaning device who has the cleaning head, is used for wasing surface cleaning device's washing subassembly, the bottom of cleaning head is equipped with two rotatable turntables that distribute about being, is equipped with the wiper on the carousel, be equipped with the rotatory drive assembly of drive carousel in the cleaning head, the washing subassembly includes the cleaning tank, is equipped with wiper, washing liquid in the cleaning tank, its characterized in that, the cleaning head is placed in the washing tank, wiper and cleaning member butt, the washing tank is equipped with horizontal locating part, and drive assembly drive wiper rotates on the wiper, horizontal locating part and cleaning head cooperation, so that the horizontal reciprocating swing of cleaning head in the washing tank, wherein, the rotational speed scope of carousel is 100 ~ 260r/min.

2. The surface cleaning system of claim 1, wherein the cleaning head includes a housing, and the horizontal stop cooperates with the housing of the cleaning head to cause the cleaning head to oscillate horizontally back and forth within the cleaning tank.

3. The surface cleaning system of claim 2, wherein the horizontal stop is a side wall of the basin.

4. The surface cleaning system of claim 1, wherein the horizontal stop cooperates with the turntable to cause the cleaning head to oscillate horizontally back and forth within the basin.

5. The surface cleaning system of claim 2 or 3, wherein the horizontal limiting members are bosses extending inward from the front and rear side walls of the cleaning tank, respectively, and the bosses are provided with oppositely disposed limiting surfaces for limiting the front and rear sides of the housing.

6. The surface cleaning system of claim 5, wherein a spacing between the limit surface and the housing is less than a spacing between the turntable and the rinse tank in a front-to-back direction.

7. The surface cleaning system of claim 5, wherein the cleaning basin further comprises a drain opening at a transition between the ledge and a rear sidewall of the cleaning basin, and wherein the rotation direction of the turntable is relatively inward in the forward cleaning direction of the surface cleaning apparatus.

8. A surface cleaning system according to any one of claims 1 to 4, wherein the cleaning elements are provided with wiping elements for abutment with the cleaning elements, and the respective wiping elements of the two discs are arranged asymmetrically with respect to the central axial plane of the cleaning head.

9. A surface cleaning system as claimed in any one of claims 2 to 4, characterised in that the projected part of the turntable in the vertical direction is exposed to the housing and the diameter of the wipers is greater than the diameter of the turntable.

10. A surface cleaning system according to any one of claims 1 to 4, wherein the cleaning assembly further comprises a rotatable valve stem, the valve stem comprising a drive end and a driven end, the bottom of the cleaning bath being provided with a drain outlet, the driven end of the valve stem being provided with a valve body for closing the drain outlet, the drive end of the valve stem abutting a mop, the mop rotating to open the drain outlet upon reverse rotation of the turntable.

Images