CN209808203U

CN209808203U - Dirty liquid recovery unit and wet and dry dust catcher

Info

Publication number: CN209808203U
Application number: CN201920399284.4U
Authority: CN
Inventors: 卞庄
Original assignee: Suzhou Chenghe Cleaning Equipment Co Ltd
Current assignee: Suzhou EUP Electric Co Ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2019-12-20
Anticipated expiration: 2029-03-27

Abstract

The utility model discloses a dirty liquid recovery device and a wet and dry dust collector, which comprises a dirty liquid box with a dirty liquid containing chamber inside, wherein the dirty liquid containing chamber is provided with a liquid dropping port and an air exhaust port for the dirty liquid to drop into the dirty liquid containing chamber from the upper part of the dirty liquid containing chamber; at least part of the dirty liquid inlet pipe extends into the dirty liquid receiving chamber, the dirty liquid inlet pipe is positioned at the upstream of the liquid dropping port, and the dirty liquid inlet pipe, the liquid dropping port and the dirty liquid receiving chamber are communicated in sequence; the buoy is positioned in the dirty liquid storage chamber and comprises a buoy body, the buoy body is a hollow annular body and extends in the vertical direction, the buoy body is sleeved outside the dirty liquid inlet pipe, a vertically through space is formed between the buoy body and the dirty liquid inlet pipe, the space is communicated with the dirty liquid storage chamber, the liquid dropping port is positioned above the space, and at least part of dirty liquid dropping from the liquid dropping port falls into the space and then enters the dirty liquid storage chamber. Among the foul solution recovery unit of present case, the buoy removes more gently, and gas-liquid separation effect is better.

Description

Dirty liquid recovery unit and wet and dry dust catcher

Technical Field

The utility model relates to a surface cleaning equipment technical field, in particular to foul solution recovery unit and be provided with wet or dry dual-purpose dust catcher of this device.

Background

In daily life, the vacuum dust collection equipment utilizes a suction unit to generate airflow entering a dust collection device from a dust inlet, so that the dust-containing airflow is sucked into the suction unit, dust in the dust-containing airflow is separated and collected, and the separated air is discharged outside. Vacuum cleaning devices are not generally used for suctioning water because the flow of water into the body is likely to damage the suction unit. Usually, residual water stains and the like on the ground are cleaned by means of water absorption through cleaning tools such as a mop, a bucket and the like, but the water absorption effect of the mop is very limited, the water absorption efficiency is not high, the water stains on the ground are easily enlarged to form a polluted area, and the cleaning effect is poor.

In the prior art, for wet cleaning of a surface to be cleaned, specialized wet cleaning devices have been provided which include a cleaning liquid delivery system for delivering a cleaning liquid to the surface to be cleaned, and a dirt recovery system for extracting spent cleaning fluid and debris (which may include dirt, dust, stains, dirt, hair, and other debris) from the surface. The cleaning liquid delivery system generally includes a supply tank for storing cleaning liquid, a spray nozzle for applying the cleaning liquid to the surface to be cleaned, and a fluid supply conduit for delivering the cleaning liquid from the supply tank to the spray nozzle. An agitator may be provided for agitating the cleaning fluid on the surface. A dirty liquid recovery system typically includes a dirty liquid recovery tank, a suction opening facing a surface to be cleaned and in fluid communication with the dirty liquid recovery tank through a working air conduit, and a suction source in fluid communication with the working air conduit to draw cleaning fluid from the surface to be cleaned and discharge the cleaning fluid through the suction opening and the working air conduit to the dirty liquid recovery tank.

Among the above-described wet cleaning apparatuses, a typical apparatus is disclosed in chinese utility model patent publication No. CN206434268U, which discloses a surface cleaning apparatus comprising: a housing comprising an upright handle assembly and a base mounted to the upright handle assembly and adapted to move over a surface to be cleaned. The surface cleaning apparatus is further provided with a fluid delivery system comprising: a fluid dispenser; and at least one fluid delivery channel forming a portion of the fluid delivery path. The fluid delivery channel may be formed by a portion of the suction nozzle assembly on the base.

As a common household cleaning device, a vacuum cleaner is used for adsorbing dust and garbage on a dry floor, and the vacuum cleaner cannot work on a wet floor with dirty liquid or a floor which needs to be cleaned while spraying water. The reasons for its inoperability are mainly: the dirty liquid is easily sucked into the vacuum cleaner, but the suction motor assembly in the vacuum cleaner is usually not waterproof, and the water vapor entering into the motor assembly can damage the motor and cause the motor not to work normally.

A prior chinese patent application publication No. CN108478097A discloses a vacuum cleaner capable of attaching a cleaning attachment to perform a wet cleaning operation, and a chinese published patent document No. CN104768439A also discloses a moisture absorbing attachment attached to a dry vacuum cleaner for cleaning purposes. The attachments in both of the above documents achieve an expansion of the range of use of the vacuum cleaner using the ordinary dry vacuum motor, but both of them have disadvantages in terms of suction force and reliability of gas-liquid separation.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, a first object of the present invention is to provide a dirty liquid recovery device for efficiently performing water-gas separation; the second purpose of the utility model is to provide a wet and dry dust collector with the dirty liquid recovery device.

In order to realize the first purpose of the above utility model, the utility model discloses a following first technical scheme: a dirty liquid recovery device, comprising:

the dirty liquid box is internally provided with a dirty liquid accommodating chamber, and the dirty liquid accommodating chamber is provided with a liquid dropping port through which dirty liquid drops into the dirty liquid accommodating chamber from the inner upper part of the dirty liquid accommodating chamber and an air outlet through which air escapes from the dirty liquid accommodating chamber;

at least part of the dirty liquid inlet pipe extends into the dirty liquid receiving chamber, the dirty liquid inlet pipe is positioned at the upstream of the liquid dropping port, and the dirty liquid inlet pipe, the liquid dropping port and the dirty liquid receiving chamber are communicated in sequence;

the buoy comprises a buoy body, the buoy body is a hollow annular body and extends along the vertical direction, the buoy body is sleeved outside the sewage inlet pipe, a space which is communicated up and down is formed between the buoy body and the sewage inlet pipe, the space is communicated with the sewage storage chamber, the liquid falling port is positioned above the space, and at least part of sewage falling from the liquid falling port falls into the space and then enters the sewage storage chamber.

In the first aspect, preferably, the dirty liquid tank includes a dirty liquid tank body and a dirty liquid tank cover covering an upper portion of the dirty liquid tank body, and the dirty liquid inlet pipe extends inward from a bottom of the dirty liquid tank body. Further preferably, the dirty liquid inlet pipe is located in the middle of the dirty liquid tank body. Or more preferably, the contaminated liquid inlet pipe is formed integrally with the contaminated liquid tank.

In the first technical solution, preferably, the buoy body is a hollow closed body structure.

In the above first technical solution, preferably, the buoy body includes an upper surface and a lower surface, and the upper surface and/or the lower surface is a slope surface gradually inclined downward from back to front.

In the first technical solution, preferably, the device further comprises a shielding cover, the shielding cover is located in the dirty liquid tank and located right above the dirty liquid inlet pipe, and at least part of the dirty liquid flowing out of the dirty liquid inlet pipe collides with the inner wall surface of the shielding cover and then enters the liquid outlet.

In the first technical scheme, preferably, the lower part of the shielding cover is of an open structure, and the upper end part of the dirty liquid inlet pipe extends upwards into the inner side of the shielding cover.

In order to realize the second objective of the above utility model, the utility model adopts the following second technical scheme: a wet and dry vacuum cleaner comprising:

a cleaning head adapted to be moved over a surface to be cleaned, said cleaning head having a suction opening for drawing dirty liquid into said cleaning head together with air and a liquid jet nozzle for delivering cleaning liquid;

an upright portion, a lower portion of which is rotatably connected with the cleaning head;

a cleaning liquid supply device including a cleaning liquid tank provided on the upright portion and communicating with the liquid jet nozzle;

in the dirty liquid recovery apparatus according to any one of the first aspect and the preferred embodiment of the first aspect, the dirty liquid tank is provided in the upright portion;

the dust collector main machine comprises a short air inlet pipe, a dust collecting barrel in air flow communication with the short air inlet pipe and a suction motor in fluid communication with the dust collecting barrel, and the dust collector main machine can be detachably connected with the vertical part; when the main machine of the dust collector is communicated with the upright part, the air inlet short pipe is communicated with the air outlet, and dirty liquid and air enter the cleaning head part from the suction port and flow through the dirty liquid recovery device under the action of the suction motor.

In the second aspect, it is preferable that the dirty liquid tank and/or the cleaning liquid tank be detachably provided in the upright portion.

In the second technical solution, preferably, the vacuum cleaner main unit is a handheld portable or horizontal vacuum cleaner main unit.

In the second technical solution, preferably, the vacuum cleaner further includes a hollow hard pipe accessory, and the hollow hard pipe accessory can be used for detachably connecting the top end of the upright part with the short air inlet pipe of the main body of the vacuum cleaner.

In the second technical solution, preferably, the cleaning head is further provided with a rolling brush chamber and a rolling brush installed in the rolling brush chamber; the liquid spraying nozzle is arranged in the rolling brush chamber so as to spray the cleaning liquid to at least one of the rolling brush and the surface to be cleaned.

Compared with the prior art, the utility model obtain following beneficial effect: through setting the buoy body to hollow annular and can extend from top to bottom for dirty liquid that falls into dirty liquid containing room can fall into dirty liquid containing room via the space between buoy body and the dirty liquid admission pipe, and dirty liquid that gets into dirty liquid room like this can Europe natural segregation with the air, and dirty liquid can not produce big disturbance along with the air after getting into dirty liquid containing room, and the buoy body removes more gently, thereby makes the gas-liquid separation effect obtain the guarantee.

Drawings

FIG. 1 is a perspective view of a vacuum cleaner according to the present invention;

FIG. 2 is a schematic sectional view of a vacuum cleaner according to the present invention;

FIG. 3 is a disassembled view of the waste liquid tank of the present invention;

FIG. 4 is a schematic sectional view of the waste liquid tank of the present invention;

FIG. 5 is a schematic view showing the flow direction of the dirty liquid and air in the dirty liquid tank when the vacuum cleaner of the present invention is in operation;

fig. 6 is a schematic view showing the flow direction of the dirty liquid and air during the operation of the vacuum cleaner of the present invention.

Wherein: 100. a vacuum cleaner; 1. a cleaning head device; 3. a hollow hard tube accessory; 4. a main machine of the dust collector; 411. a short air inlet pipe; 41. a dust collecting barrel; 42. a suction motor; 43. a rechargeable battery pack; 20. an upright portion; 10. cleaning the head; 111. an upper cover; 112. a lower cover; 11. a housing; 113. a cover base; 12. a rolling brush chamber; 13. rolling and brushing; 14. a suction port; 15. a gap; 21. a lower connector; 22. a dirty liquid tank; 23. a cleaning liquid tank; 220. a dirty liquid storage chamber; 221. a dirty liquid tank body; 222. an upper cover of the waste liquid tank; 24. a float; 241. a buoy body; 2411. a peripheral wall surface; 2412. an inner peripheral wall surface; 2413. an upper surface; 2414. a lower surface; 242. a space; 25. the dirty liquid enters the pipe; 250. a fluid inlet channel; 251. an inlet end; 252. an outlet end; 2201. a liquid dropping port; 2202. an exhaust port; 26. a shield cover; 27. and (4) a plug.

Detailed Description

For the purpose of illustrating the technical content, the constructional features, the achieved objects and the effects of the invention in detail, reference will be made to the following detailed description of the embodiments illustrated in the accompanying drawings.

Fig. 1-2 are schematic perspective views illustrating a wet and dry vacuum cleaner 100 according to an embodiment of the present invention, wherein the vacuum cleaner 100 can spray cleaning liquid onto a surface to be cleaned and suck dirty liquid (i.e., dirt-containing liquid particles) on the surface to be cleaned into a machine for processing together with air. The vacuum cleaner 100 comprises, from bottom to top, three parts, a cleaner head assembly 1, a hollow wand attachment 3 and a hand-held cleaner body 4, which are detachable and in fluid and electrical communication when assembled. For purposes of description with respect to the figures, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", "inner", "outer", and derivatives thereof shall relate to the perspective (as oriented in fig. 1) of a user from behind the vacuum cleaner 100 that defines the rear of the vacuum cleaner 100.

The hand-held cleaner main body 4 comprises a dust collecting barrel 41 with an air inlet short pipe 411, a suction motor 42 and a rechargeable battery pack 43 which can be used for supplying electric energy to the suction motor 42, and the cleaner main body 4 can be connected with the upper part of the cleaning head device 1 through the hollow hard pipe accessory 3. In other embodiments, the cleaner main body may be arranged to be detachably coupled directly to the upper part of the cleaner head unit.

The cleaning head device 1 comprises a cleaning head 10 adapted to be moved over a surface to be cleaned and an upright portion 20 pivotally connected to the cleaning head 10 at a lower portion.

The cleaning head 10 comprises a housing 11 formed by an upper cover 111 and a lower cover 112, the upper cover 111 and the lower cover 112 being clamped and defining therebetween a partially enclosed chamber for receiving a portion of the cleaning liquid delivery line and for receiving the dirty liquid recovery line. The housing 11 further includes a cover base 113, and the cover base 113 is partially coupled to the lower cover 112 to define a portion of the roll brush chamber 12, the roll brush chamber 12 having the roll brush 13 mounted therein, and the roll brush chamber 12 having a liquid nozzle (not shown) mounted therein for spraying the cleaning liquid to the roll brush 13. A suction port 14 is arranged at the bottom of the lower cover 112, part of bristles of the rolling brush 13 extend to the outside through the suction port 14, and a gap 15 is formed between the rolling brush 13 and the inner wall surface of a part of the shell 11; when the roller brush 13 rotates on the surface to be cleaned, the combing hairs on the roller brush 13 pick up the dirt particles and the solid waste on the surface to be cleaned by friction with the surface to be cleaned and send into the dirt recovery pipe inside through this gap 15 together with air.

The upright portion 20 includes a lower connector 21 rotatably connected to the cleaning head 10, a dirty liquid tank 22 for receiving dirty liquid, and a cleaning liquid tank 23 for storing cleaning liquid. The dirty liquid tank 22 and the cleaning liquid tank 23 are detachably attached to the upright portion 20. The dirty liquid tank 22 is an important component constituting the dirty liquid recovery apparatus, and the cleaning liquid tank 23 is an important component constituting the cleaning liquid supply apparatus. In this example, a mounting groove adapted to receive a cleaning liquid tank 23 is formed in the rear of the upper portion of the upright portion 20, and the cleaning liquid tank 23 is positioned in the mounting groove and above the dirty liquid tank 22. The cleaning liquid tank 23 is communicated with the liquid spray nozzle through a cleaning liquid output channel, and necessary components such as a pump are arranged on the path of the cleaning liquid output channel so as to convey the cleaning liquid to the liquid spray nozzle in time and in sufficient quantity.

As shown in fig. 3, the dirty liquid tank 22 includes a dirty liquid tank 221 having a dirty liquid storage chamber 220 therein, and a dirty liquid tank cover 222 covering an upper portion of the dirty liquid tank 221. The dirty liquid tank 22 includes a float 24 in a dirty liquid storage chamber 220.

As shown in fig. 4, the float 24 includes a float body 241, and the float body 241 is a hollow closed structure. In this example, the float body 241 has a hollow ring shape and extends in the vertical direction. The float body 241 has an inner peripheral wall 2411, an outer peripheral wall 2412, an upper surface 2413 and a lower surface 2414 between the inner peripheral wall and the outer peripheral wall, and the upper surface 2413 and the lower surface 2414 are both slope surfaces gradually inclining downwards from back to front. Dirty liquid collecting chamber 220 is inside to be provided with stereoplasm foul liquid admission pipe 25, and foul liquid admission pipe 25 is used for carrying the mixed fluid of foul liquid and air in the dirty liquid collecting chamber 220 of dirty liquid case 22, and foul liquid admission pipe 25 upwards extends and passes through the inside of dirty liquid collecting chamber 220 from bottom to top, and the inside of foul liquid admission pipe 25 forms the fluid access channel 250 that supplies foul liquid and air to flow from bottom to top together. In this example, the contaminated liquid inlet pipe 25 is formed integrally with the contaminated liquid tank 221. Dirty liquid inlet pipe 25 includes an inlet end 251 and an outlet end 252; the inlet end 251 is located at the middle position of the bottom of the dirty liquid tank 221, and the outlet end 252 extends into the dirty liquid tank 221 and is located at the upper position of the dirty liquid accommodating chamber 220. The buoy body 241 is sleeved outside the dirty liquid inlet pipe 25 and is concentrically arranged, namely, the central lines X of the buoy body and the dirty liquid inlet pipe coincide. A space 242 that penetrates vertically is formed between the inner peripheral wall 2412 of the float body 241 and the outer pipe wall of the contaminated liquid inlet pipe 25, and this space 242 communicates with the contaminated liquid storage chamber 220.

As shown in fig. 4, the dirty liquid tank 22 is provided with a liquid dropping port 2201 through which the mixed fluid of the dirty liquid and the air drops downward into the dirty liquid storage chamber 220 from the upper inner portion of the dirty liquid storage chamber, an exhaust port 2202 through which the air escapes from the dirty liquid storage chamber 220, and a shield cover 26. In this example, the liquid dropping port 2201 is provided directly above the space 242; the shield cover 26 is located at the inner upper portion of the dirty liquid storage chamber 220, the outlet end 252 of the dirty liquid inlet pipe 25 is located directly below the shield cover 26 and faces the shield cover 26, and the liquid outlet 2201 is located directly below the shield cover 26. In this example, the shield cover 26 is open at the lower part, part of the outlet end 252 of the dirty liquid inlet pipe 25 extends into the shield cover 26, the mixed fluid of the dirty liquid flowing out from the outlet end 252 and the air can collide with the inner wall surface of the shield cover 26, the collision can change the flow direction of the mixed fluid, the dirty liquid colliding with the shield cover 26 can fall downward through the liquid falling port 2201, most of the dirty liquid falling from the liquid falling port 2201 is enclosed by the float body 241 and enters the space 242, and then falls to the bottom of the space 242 and finally enters the dirty liquid storage chamber 220.

A plug 27 which can move up and down along with the buoy 24 is arranged in the waste liquid tank 22, and the plug 27 is arranged as follows: when the float 24 moves up to a set position (i.e., a set full level), the plug 27 moves to the vent port 2202 and blocks the vent port 2202. In this example, the plug 27 is fixedly provided integrally with the float 24.

As shown in fig. 5, the dirty liquid and the air mixed together flow upward from the fluid inlet channel inside the dirty liquid inlet pipe 26, flow out through the outlet port 252, and then the mixed fluid collides with the inner wall surface of the shielding cover 26, and then falls through the liquid falling port 2201, most of the fallen dirty liquid enters the space 242 due to the enclosure of the float body 241, and flows into the dirty liquid receiving chamber 220 through the space 242, and a small part of the dirty liquid splashes to the outside of the float body 241 and directly falls into the dirty liquid receiving chamber 220; and the air escaping through the liquid dropping port 2201 will flow upward by the suction force and flow to the outside of the dirty liquid storage chamber 220 through the air outlet 2202.

The operation of the vacuum cleaner 100 is described below with reference to figures 5 and 6:

when the main body 4 and the upright part 20 of the hand-held cleaner are connected through the hollow hard pipe accessory 3, the air inlet short pipe 40 is communicated with the exhaust pipe 224. When the handheld vacuum cleaner main body 4 works, the upright part 20 tilts backwards, at this time, the upper surface 2413 and the lower surface 2414 of the buoy body 241 approach the horizontal surface downwards, the cleaning liquid in the cleaning liquid tank 23 is continuously conveyed to the roller brush 13 and then is applied to the surface to be cleaned through the rotating roller brush 13, the dirty liquid and air mixed fluid is rolled up by the rotating roller brush and enters the cleaning head 10 from the suction port 14 under the suction action of the suction motor 42, then sequentially flows upwards through the dirty liquid inlet pipe 25, the dirty liquid and air mixed fluid flowing in from the outlet end 252 at the upper part of the dirty liquid inlet pipe 25 collides with the inner wall surface of the shielding cover 26 at the upper side, the collided air and dirty liquid change the flowing direction and flow out from the falling liquid port 2201 at the lower side, the dirty liquid flows into the space 242 at the lower side under the action of gravity and enters the dirty liquid receiving chamber 220 through the lower side of the space 242, the air will escape from the dirty liquid storage chamber 220 through the air outlet 2202 upwards, and flow into the hollow hard tube 3 through the air outlet pipe 224, and then enter the dust collecting barrel 41 of the handheld vacuum cleaner main unit 4 through the air inlet short pipe 40, and finally be exhausted to the outside. Along with the dirty liquid level in the dirty liquid storage chamber 220 continuously rises, the buoy 24 in the dirty liquid storage chamber 220 moves upwards along with the dirty liquid level, so as to drive the plug 27 to move upwards, and when the dirty liquid storage chamber 220 rises to a set liquid level, the plug 27 also moves to the exhaust port 2202 right, so as to block the exhaust port 2202, and then the suction port 15 stops sucking dirty liquid and air, and a user can continue to work the vacuum cleaner after needing to empty the dirty liquid in the dirty liquid tank 22.

In the scheme, most of the dirty liquid entering the dirty liquid receiving chamber from the liquid dropping port enters the dirty liquid receiving chamber from the space between the buoy body and the dirty liquid inlet pipe, and the influence of air flow disturbance in the dirty liquid receiving chamber on the buoy body is reduced by sleeving the buoy body on the outer side of the dirty liquid inlet pipe; therefore, among the dirty liquid recovery unit of this structure, the dirty liquid is more gentle in the flow of dirty liquid storage chamber, and the disturbance of the mixture of dirty liquid and air in dirty liquid storage chamber is reduced, and the buoy steady movement, the steady flow of dirty liquid will also reduce the dirty liquid and mix with the probability that flows to the dust catcher host computer along with the air in the air to vacuum motor device's safe handling in the dust catcher host computer has been guaranteed.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A dirty liquid recovery device, characterized by comprising:

2. The contaminated liquid recovery apparatus according to claim 1, wherein: the dirty liquid case include a dirty liquid box and cover and be in dirty liquid case upper cover on dirty liquid box upper portion, dirty liquid admission pipe follow the bottom of dirty liquid box is to inboard extension.

3. The contaminated liquid recovery apparatus according to claim 2, wherein: the dirty liquid inlet pipe is positioned in the middle of the dirty liquid box body.

4. The contaminated liquid recovery apparatus according to claim 2, wherein: the dirty liquid inlet pipe and the dirty liquid box body are integrally formed.

5. The contaminated liquid recovery apparatus according to claim 1, wherein: the buoy body is a hollow closed body structure.

6. The contaminated liquid recovery apparatus according to claim 1 or 5, wherein: the buoy body comprises an upper surface and a lower surface, and the upper surface and/or the lower surface are/is a slope surface which is gradually inclined downwards from back to front.

7. The contaminated liquid recovery apparatus according to claim 1, wherein: the device also comprises a shielding cover, wherein the shielding cover is positioned in the sewage tank and is positioned right above the sewage inlet pipe, and at least part of sewage flowing out of the sewage inlet pipe collides with the inner wall surface of the shielding cover and then enters the liquid outlet.

8. The contaminated liquid recovery apparatus according to claim 7, wherein: the lower part of the shielding cover is of an open structure, and the upper end part of the sewage inlet pipe extends upwards into the inner side of the shielding cover.

9. A wet and dry vacuum cleaner, comprising:

the dirty liquid recovery apparatus as claimed in any one of claims 1 to 8, wherein the liquid outlet is in fluid communication with the suction port, and the dirty liquid tank is disposed at the upright portion;

10. A wet and dry vacuum cleaner according to claim 9 wherein the dirty liquid tank and/or the clean liquid tank is removably mounted on the upright portion.

11. The wet and dry vacuum cleaner according to claim 9, wherein: the main machine of the dust collector is a handheld portable or horizontal main machine of the dust collector.

12. The wet and dry vacuum cleaner according to claim 9, wherein: the vacuum cleaner also comprises a hollow hard pipe accessory, and the hollow hard pipe accessory can be used for detachably connecting the top end of the upright part with the air inlet short pipe of the vacuum cleaner main body.

13. The wet and dry vacuum cleaner according to claim 9, wherein: the cleaning head is further provided with a rolling brush chamber and a rolling brush mounted in the rolling brush chamber, the rolling brush is used for contacting the surface to be cleaned and picking up dirty liquid from the surface to be cleaned during rotation of the rolling brush and sending the dirty liquid to the suction opening, and the liquid spray nozzle can spray the cleaning liquid to at least one of the rolling brush and the surface to be cleaned.