Base station, cleaning equipment and self-cleaning method of cleaning equipment

Abstract

The invention belongs to the technical field of cleaning equipment, and discloses a base station, cleaning equipment and a self-cleaning method of the cleaning equipment. The base station is used for being in butt joint with a cleaning head of the floor scrubber, the cleaning head comprises a front rolling brush and a rear rolling brush, the base station comprises a base body, a cleaning groove used for containing the cleaning head is formed in the base body, a flow channel is formed in the circumferential side wall of the cleaning groove, a liquid inlet communicated with the flow channel is formed in the front side wall of the cleaning groove, and a liquid outlet communicated with the flow channel is formed in the rear side wall of the cleaning groove. The liquid inlet can receive liquid sprayed out of a liquid spraying opening in the cleaning head, and a liquid outlet communicated with the flow channel is formed in the side wall of the rear side of the cleaning groove so that the liquid in the flow channel can sequentially pass through the rear rolling brush and the front rolling brush. Liquid sprayed out of the cleaning head sequentially flows through the rear rolling brush and the front rolling brush after passing through the flow channel, stains in contact with the rear rolling brush are few, cleaning is better, the liquid passing through the rear rolling brush makes contact with the front rolling brush for cleaning, and the cleaning effect of the front rolling brush and the rear rolling brush can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a base station, a cleaning equipment and a self-cleaning method for the cleaning equipment. Background Art

[0002] A floor scrubber is a cleaning machine that is suitable for cleaning hard floors while sucking out wastewater and taking it away from the site. It has the advantages of being environmentally friendly, energy-saving, and highly efficient. With the iteration and update of products, a "double-roller brush water machine" with a self-cleaning function has appeared on the market. This type of product includes two roller brushes set in front and back. The front roller brush is used for mopping the floor, and the rear roller brush is used for polishing to achieve a cleaning effect. At present, the roller brush in the "double-roller brush water machine" can achieve self-cleaning in the base station.

[0003] When cleaning the roller brush of the existing base station, it is generally believed that the rear roller brush is used for polishing and does not touch the stains, so it does not need to be cleaned. Therefore, water is sprayed from the front side of the front roller brush, and the water gathers at the front roller brush to clean only the front roller brush. However, in actual use, the rear roller brush will inevitably touch the dirt, resulting in the rear roller brush being unable to be cleaned, which affects the use effect of the floor scrubber. In addition, the water channel in the existing base station is complex, the cost of the whole machine is high, and the water channel is easily polluted and blocked. Summary of the invention

[0004] The object of the present invention is to provide a base station, a cleaning device and a self-cleaning method for the cleaning device, which can solve the problems of poor cleaning effect of a roller brush, complex water channels and easy contamination of the water channels.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A base station is used to connect to the cleaning head of a floor scrubber, the cleaning head includes a front roller brush and a rear roller brush, the base station includes a base body, the base body is provided with a cleaning groove for accommodating the cleaning head, a flow channel is provided in the circumferential side wall of the cleaning groove, a liquid inlet connected to the flow channel is provided on the front side wall of the cleaning groove, the liquid inlet can receive liquid sprayed from the liquid spray port on the cleaning head, and the rear side wall of the cleaning groove is provided with a liquid outlet connected to the flow channel, so that the liquid in the flow channel passes through the rear roller brush and the front roller brush in sequence.

[0007] As an optional solution for the above-mentioned base station, the bottom surface of the cleaning groove has a front cleaning area b cooperating with the front roller brush and a rear cleaning area a cooperating with the rear roller brush, the front cleaning area b and the rear cleaning area a are connected by a guide surface, and the front end height of the guide surface is lower than the rear end height of the guide surface.

[0008] As an optional solution of the above base station, the front cleaning area b and / or the rear cleaning area a are both provided with a plurality of protrusions.

[0009] As an optional solution of the above base station, the plurality of protrusions in the post-cleaning area a are arranged in multiple rows, and the protrusions in two adjacent rows are arranged in a staggered manner.

[0010] As an optional solution of the above base station, the spacing between two adjacent rows of the protrusions is smaller than the radial dimension of the protrusions.

[0011] As an optional solution for the above base station, the number of the multiple rows of protrusions gradually decreases from the back to the front.

[0012] As an optional solution for the above-mentioned base station, the height of the front cleaning area b gradually increases from the projection position of the axis of the front roller brush on the bottom surface of the cleaning tank to the front and rear ends.

[0013] As an optional solution of the above base station, an overflow channel is provided on the base body, one end of the overflow channel is connected to the cleaning tank, and the other end of the overflow channel is connected to the outer wall of the base body.

[0014] As an optional solution of the above base station, the overflow channel is arranged at the front end of the front cleaning area b.

[0015] As an optional solution of the above-mentioned base station, the cleaning head also includes a front scraper, and the front scraper is arranged on the rear side of the front roller brush. When the cleaning head is placed in the cleaning tank, the bottom surface of the cleaning tank is spaced apart from the front scraper.

[0016] As an optional solution of the above base station, the height of the liquid outlet is lower than the height of the axis of the rear roller brush.

[0017] As an optional solution of the above base station, the base body includes:

[0018] A shell, the cleaning groove is arranged on the shell, and a drainage groove is arranged on the shell around the cleaning groove;

[0019] An annular cover body is arranged on the shell and at least covers the outside of the drainage groove to form the flow channel together with the drainage groove.

[0020] As an optional solution of the above base station, the drainage trough includes a first drainage section, a second drainage section and a third drainage section connected in sequence;

[0021] The first drainage section is located at the front end of the seat body, the first drainage section is connected to the liquid inlet, and the height of the first drainage section gradually decreases from the head end to the tail end;

[0022] The second drainage section extends in the front-to-back direction, and the height of the second drainage section gradually decreases from the head end to the tail end;

[0023] The third drainage section is located at the rear end of the seat body, and the third drainage section is communicated with the liquid outlet.

[0024] As an optional solution for the above-mentioned base station, an air duct and a drying component are provided in the shell, the drying component is provided in the air duct, an air outlet is provided on the side wall of the cleaning tank, the air outlet is connected to the air duct, and when the cleaning head is placed in the cleaning tank, the air outlet is located between the front roller brush and the rear roller brush.

[0025] As an optional solution of the above base station, the housing includes:

[0026] Bottom shell;

[0027] The upper cover is connected to the bottom shell, the air duct is formed between the upper cover and the bottom shell, the air outlet and the drainage groove are both located on the upper cover, and the air outlet is located below the drainage groove.

[0028] As an optional solution of the above base station, the upper cover includes:

[0029] Upper cover;

[0030] An inner side plate is arranged around the circumference of the upper cover plate, and holes are opened on the inner side plate to form the liquid outlet, the liquid inlet and the air outlet respectively;

[0031] An outer side plate, arranged at intervals on the outer side of the inner side plate;

[0032] The groove bottom plate connects the inner side plate and the outer side plate to cooperate with the inner side plate and the outer side plate to form the drainage groove. The groove bottom plate is respectively connected to the upper cover plate at the liquid outlet and the liquid inlet, and the air outlet is located below the groove bottom plate.

[0033] As an optional solution of the above base station, the upper cover plate is bent upward to form a folded edge, and the folded edge is located on the outer side of the air outlet.

[0034] As an optional solution for the above-mentioned base station, the upper cover also includes an air guide cover, which is U-shaped and connected to the outer side panel. The air guide cover and the outer side panel form an air guide channel, and the air guide channel is connected to the air duct.

[0035] As an optional solution of the above base station, the dimension of the liquid outlet along the axial direction of the rear roller brush is 1 / 3-1 / 2 times the axial dimension of the rear roller brush.

[0036] As an optional solution of the above-mentioned base station, the shape and size of the cleaning groove are adapted to the cleaning head so that a closed cavity is formed between the cleaning groove and the cleaning head, and the closed cavity is located between the front roller brush and the rear roller brush.

[0037] A cleaning device comprises a floor scrubber and the above-mentioned base station, wherein the floor scrubber comprises a cleaning head, and the cleaning head comprises a machine head and a front roller brush and a rear roller brush rotatably arranged on the bottom surface of the machine head.

[0038] As an optional solution of the above-mentioned cleaning equipment, the cleaning head also includes a rear scraper, which is arranged on the bottom surface of the machine head and located on the front side of the rear roller brush. The rear scraper is abutted against the rear roller brush, and the height of the rear scraper is lower than the axial height of the rear roller brush.

[0039] As an optional solution of the above cleaning device, the cleaning head further comprises comb teeth connected to the machine head, the comb teeth are located at the rear side of the front roller brush and abut against the front roller brush;

[0040] The comb teeth include:

[0041] A cut-off portion connected to the machine head, the cut-off portion extending along the axial direction of the front roller brush;

[0042] A combing part, comprising a plurality of teeth arranged at intervals, wherein the plurality of teeth are arranged at the bottom end of the intercepting part;

[0043] It is defined that when the cleaning device cleans the surface to be cleaned, the rear roller brush and the front roller brush both rotate forward, and when the front roller brush rotates forward, the combing part is located upstream of the intercepting part.

[0044] As an optional solution for the above-mentioned cleaning equipment, a motor and a reduction gearbox are provided in the machine head, and the motor and the reduction gearbox are located between the front roller brush and the rear roller brush. The reduction gearbox is provided with two output ends, and the motor is transmission connected to the reduction gearbox, one of the two output ends is transmission connected to the front roller brush, and the other is transmission connected to the rear roller brush.

[0045] As an optional solution of the above-mentioned cleaning equipment, the cleaning head also includes a clean water tank and a water pump arranged in the head, the clean water tank is connected to the liquid spray port, and the water pump is used to drive the liquid in the clean water tank to flow to the liquid spray port.

[0046] As an optional solution of the above cleaning device, the water pump is located between the front roller brush and the rear roller brush, and the motor and the water pump are arranged along the axial direction of the front roller brush.

[0047] A self-cleaning method for a cleaning device, applied to the above-mentioned cleaning device, defining that when the cleaning device cleans a surface to be cleaned, the rear roller brush and the front roller brush both rotate in a positive direction, and the self-cleaning method for the cleaning device includes a first cleaning stage and a second cleaning stage;

[0048] The first cleaning stage includes:

[0049] supplying cleaning fluid to the rear side of the rear roller brush;

[0050] The rear roller brush rotates in the reverse direction, wherein the rear roller brush rotates in the reverse direction by the rear side of the rear roller brush passing over the top and rotating toward the front side;

[0051] Vacuuming sewage;

[0052] The second cleaning stage includes:

[0053] supplying cleaning fluid to the rear side of the rear roller brush;

[0054] The front roller brush and the rear roller brush both rotate in a positive direction, wherein the front roller brush rotates in a positive direction by the rear side of the front roller brush bypassing the top and rotating toward the front side.

[0055] As an optional solution to the self-cleaning method of the above cleaning device, the rear side of the front roller brush is provided with comb teeth abutting against the front roller brush, and in the first cleaning stage, the front roller brush rotates in the opposite direction while the rear roller brush rotates in the opposite direction.

[0056] As an optional solution of the self-cleaning method of the cleaning equipment, the suction and removal of sewage in the first cleaning stage includes:

[0057] The front roller brush and the rear roller brush both rotate intermittently in a positive direction;

[0058] During the forward rotation of the front roller brush and the rear roller brush, the dust suction motor in the cleaning device is started at intervals.

[0059] As an optional solution of the self-cleaning method of the above cleaning equipment, the second cleaning stage also includes sucking out the sewage, and the sucking out of the sewage in the second cleaning stage includes:

[0060] The front roller brush and the rear roller brush rotate forward and reverse alternately;

[0061] During the forward rotation of the front roller brush and the rear roller brush, starting the dust suction motor in the cleaning device;

[0062] The dust collection motor is turned off when the front roller brush and the rear roller brush rotate in opposite directions.

[0063] As an optional solution of the self-cleaning method of the cleaning device, the power of the dust suction motor is gradually increased.

[0064] As an optional solution of the self-cleaning method of the cleaning device, the time for supplying the cleaning liquid in the second cleaning stage is longer than the time for supplying the cleaning liquid in the first cleaning stage.

[0065] As an optional scheme of the self-cleaning method of the above-mentioned cleaning device, the second cleaning stage also includes a drying stage. During the drying stage, the fan and the heating element in the cleaning head are started, and the front roller brush and the rear roller brush rotate intermittently.

[0066] As an optional solution of the self-cleaning method of the above-mentioned cleaning device, in the drying stage, the fan is started earlier than the heating element, and the fan is turned off later than the heating element.

[0067] As an optional solution of the self-cleaning method of the cleaning device, in the drying stage, if a user input instruction is received or it is detected that the cleaning head is lifted, the fan and the heating element are turned off.

[0068] Beneficial effects of the present invention:

[0069] The present invention provides a base station with a cleaning head, in which the liquid sprayed from the cleaning head passes through the flow channel and then flows through the rear roller brush and the front roller brush in sequence. The rear roller brush contacts less stains and cleans better. The liquid passing through the rear roller brush contacts the front roller brush for cleaning, which can improve the cleaning effects of the front roller brush and the rear roller brush. The flow channel has a simple structure, which is conducive to reducing costs.

[0070] The flow channel is a hidden type, which makes the base station look simple, can avoid dust accumulation in the flow channel, and ensures that the flow channel is open.

[0071] The cleaning device provided by the present invention adopts the above base station, has good cleaning effect and low cost.

[0072] In the self-cleaning method of the cleaning equipment provided by the present invention, the first cleaning stage is used to clean the rear roller brush, and the cleaning liquid can be gathered between the scraper and the rear roller brush to improve the cleaning effect on the rear roller brush. The sewage passing through the rear roller brush is used to soak the front roller brush, which is beneficial to improve the utilization rate of water resources. In the second cleaning stage, the rear roller brush has been cleaned and the surface is clean. The rear roller brush only serves as a carrier of the cleaning liquid, driving the cleaning liquid to flow to the front side to contact with the front roller brush to clean the front roller brush. The cleaning method provided by the present invention can clean both the front roller brush and the rear roller brush, and has a good cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 It is a structural schematic diagram of the floor scrubber provided by the present invention;

[0074] Figure 2 is a cross-sectional view of the floor scrubber provided by the present invention;

[0075] Figure 3 It is a cross-sectional view of the cleaning head provided by the present invention when the front roller brush and the rear roller brush are rotating in opposite directions;

[0076] Figure 4 This is a schematic diagram of the partial structure of the cleaning device provided by the present invention. Figure 1 ;

[0077] Figure 5 This is a schematic diagram of the partial structure of the cleaning device provided by the present invention. Figure 2 ;

[0078] Figure 6 The structure of the base station provided by the present invention is shown in FIG. Figure 1 ;

[0079] Figure 7 The structure of the base station provided by the present invention is shown in FIG. Figure 2 ;

[0080] Figure 8 is a top view of a base station provided by the present invention;

[0081] Fig. 9 yes Figure 8 Middle AA section view;

[0082] Fig.10 It is a cross-sectional view of the cleaning head provided by the present invention when the front roller brush and the rear roller brush are both rotating in the forward direction;

[0083] Fig.11 This is a cross-sectional view of the cleaning head provided by the present invention when it is located on the base station. Figure 1 ;

[0084] Fig.12 is a cross-sectional view of a partial structure of a cleaning head provided by the present invention;

[0085] Fig.13 yes Fig.12 A partial enlarged view of point D in the middle;

[0086] Fig.14 It is a schematic structural diagram of the cleaning head provided by the present invention;

[0087] Fig.15 This is a cross-sectional view of the cleaning head provided by the present invention when it is located on the base station. Figure 2 ;

[0088] Fig.16 It is a schematic structural diagram of the base station provided by the present invention when the cover body is not assembled;

[0089] Fig.17 is a cross-sectional view of a base station provided by the present invention;

[0090] Fig.18 is an exploded diagram of a base station provided by the present invention;

[0091] Fig.19 is a cross-sectional view of a partial structure of a base station provided by the present invention;

[0092] Fig. 20 This is a cross-sectional view of the cleaning head provided by the present invention when it is located on the base station. Figure 3 ;

[0093] Fig.21 yes Fig. 20 A partial enlarged view of point C in the middle;

[0094] Fig. 22 It is a structural schematic diagram of a flange provided by the present invention;

[0095] Fig.23 is a schematic structural diagram of another flange provided by the present invention;

[0096] Fig.24 is a cross-sectional view of a cleaning head provided by the present invention;

[0097] Fig.25 It is an exploded view of the floor scrubber provided by the present invention.

[0098] In the figure:

[0099] 100, base station; 11, seat body; 111, upper cover; 1111, protrusion; 1112, drainage groove; 11121, first drainage section; 11122, second drainage section; 11123, third drainage section; 1113, guide rib; 1114, guide surface; 1115, upper cover; 11151, folding edge; 1116, inner side plate; 1117, outer side plate; 1118, groove bottom plate; 1119, wind guide cover; 112, bottom shell; 113, cover body; 1131, flange; 11311, horizontal support rib; 11312, vertical support rib; 1132, Shield body protrusion; 114, liquid inlet; 115, liquid outlet; 116, air outlet; 117, air duct; 118, overflow channel; 12, drying component; 121, fan; 122, heating element; 13, fixed end; 200, cleaning head; 21, front roller brush; 22, rear roller brush; 23, front scraper; 24, rear scraper; 25, comb teeth; 251, intercepting part; 252, combing part; 26, sewage pipe; 271, motor; 272, gear reduction box; 28, water pump; 29, auxiliary roller; 300, fuselage assembly; 400, handheld assembly; 500, handle assembly. DETAILED DESCRIPTION

[0100] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0101] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0102] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0103] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0104] Embodiment 1

[0105] like Figure 1-Figure 3As shown, this embodiment provides a cleaning device and a self-cleaning method for the cleaning device. The cleaning device includes a floor scrubber and a base station 100. The floor scrubber includes a cleaning head 200, a body assembly 300, a handheld assembly 400 and a handle assembly 500. The cleaning head 200 is arranged at the bottom end of the body assembly 300, the bottom end of the handle assembly 500 is connected to the body assembly 300, and the handheld assembly 400 is installed on the handle assembly 500 and can be connected to the body assembly 300. The user pushes and pulls the handle assembly 500 to drive the cleaning head 200 to move on the ground to achieve cleaning. The body assembly 300 is integrated with a sewage tank, which is connected to the cleaning head 200. The handheld assembly 400 is provided with a dust suction channel. The sewage and air flow enter the body assembly 300 through the cleaning head 200, and the sewage and solid garbage are collected in the sewage tank. The gas and part of the dust enter the handheld assembly 400 through the dust suction channel. After the dust is filtered by the handheld assembly 400, the relatively clean air is discharged through the handheld assembly 400.

[0106] The cleaning head 200 includes a machine head and a front roller brush 21 and a rear roller brush 22 that are rotatably arranged at the bottom of the machine head. When a user uses the floor scrubber, the front roller brush 21 and the rear roller brush 22 are arranged front and back, and the front roller brush 21 first contacts the stains on the surface to be cleaned, that is, the front roller brush 21 is used as a cleaning roller brush, and the rear roller brush 22 is used as a polishing roller brush to improve the cleaning effect. The base station 100 is used to dock the cleaning head 200 of the floor scrubber, and has the function of cleaning and drying the cleaning head 200.

[0107] Specifically, combined Figure 4-Figure 6 As shown, the base station 100 includes a base body 11, on which a cleaning tank for accommodating a cleaning head 200 is disposed, and a flow channel is disposed around the circumference of the cleaning tank on the base station 100, and a liquid inlet 114 connected to the flow channel is disposed on the front side wall of the cleaning tank, and the liquid inlet 114 can receive the liquid sprayed from the liquid spray port on the cleaning head 200, and a liquid outlet 115 connected to the flow channel is disposed on the rear side wall of the cleaning tank, so that the liquid in the flow channel passes through the rear roller brush 22 and the front roller brush 21 in sequence. In this embodiment, the liquid sprayed from the cleaning head 200 passes through the flow channel and then flows through the rear roller brush 22 and the front roller brush 21 in sequence, and the rear roller brush 22 contacts less stains and cleans better. The liquid passing through the rear roller brush 22 contacts the front roller brush 21 for cleaning, which can improve the cleaning effect of the front roller brush 21 and the rear roller brush 22. In this embodiment, the flow channel structure is simple, which is conducive to reducing costs.

[0108] To improve the cleaning effect, the axial dimension of the liquid outlet 115 along the rear roller brush 22 is 1 / 3-1 / 2 of the axial dimension of the rear roller brush 22 to ensure sufficient liquid discharge, which is beneficial for the cleaning liquid to fully diffuse along the axial direction of the rear roller brush 22 to contact the rear roller brush 22 and the front roller brush 21.

[0109] In this embodiment, the axial dimension of the liquid outlet 115 along the rear roller brush 22 is 117 mm, and the axial dimension of the rear roller brush 22 is 259 mm.

[0110] In addition, if Figure 7 As shown, the liquid inlet 114 is arranged on the front side wall of the cleaning tank, and is located at a relatively high position, so that it will not be blocked by the cleaning head 200 and the dirt cleaned out, and is not easily blocked.

[0111] like Figure 8 and Fig. 9 As shown, the bottom surface of the cleaning tank has a front cleaning area b that cooperates with the front roller brush 21 and a rear cleaning area a that cooperates with the rear roller brush 22. The front cleaning area b and the rear cleaning area a are connected by a guide surface 1114, and the front end height of the guide surface 1114 is lower than the rear end height of the guide surface 1114. The front cleaning area b and the rear cleaning area a are connected by the guide surface 1114, and the guide surface 1114 is low in the front and high in the back, so that the liquid flowing out of the liquid outlet 115 can flow forward under the action of gravity, so as to contact the front roller brush 21 after passing through the rear roller brush 22.

[0112] Optionally, the angle between the guide surface 1114 and the horizontal plane is 1°-5°. Within this range, the angle is moderate and the water flow speed is moderate, which can avoid the problem of too fast water flow speed due to a large angle, thereby affecting the cleaning effect, and can also avoid the problem of water backflow due to a small angle. In this embodiment, the angle between the guide surface 1114 and the horizontal plane is preferably 2°. In other embodiments, the angle between the guide surface 1114 and the horizontal plane can be adjusted according to actual needs, such as 3° or 4°.

[0113] Optionally, the rear cleaning area a may also be configured as a structure with a low front and a high rear to avoid residual liquid in the rear cleaning area a.

[0114] In order to further improve the cleaning effect of the front roller brush 21 and the rear roller brush 22, refer to Figure 3 As shown, a rear scraper 24 abutting against the rear roller brush 22 is provided at the front side of the rear roller brush 22 , and comb teeth 25 abutting against the front roller brush 21 are provided at the rear side of the front roller brush 21 .

[0115] When cleaning the front roller brush 21 and the rear roller brush 22, the first cleaning stage and the second cleaning stage are performed in sequence. The first cleaning stage mainly cleans the rear roller brush 22, and the second cleaning stage mainly cleans the front roller brush 21. Since the rear roller brush 22 is less exposed to dirt, the rear roller brush 22 is cleaned first, and the cleaning time is short. In addition, the sewage generated by cleaning the rear roller brush 22 is less dirty and can be used to clean the front roller brush 21.

[0116] In the first cleaning stage, the cleaning liquid is first supplied to the rear side of the rear roller brush 22, so that at least a portion of the rear roller brush 22 is immersed in the cleaning liquid, and the rear roller brush 22 is fully moistened, which is beneficial to improving the cleaning effect of the rear roller brush 22. Figure 3 The rear roller brush 22 rotates counterclockwise at the angle shown in the figure), that is, the rear roller brush 22 rotates from its rear side around the top to the front side. During the reverse rotation of the rear roller brush 22, the cleaning liquid can be driven to flow along the outer peripheral surface of the rear roller brush 22, so that at least part of the cleaning liquid is driven to the front side of the rear roller brush 22 and is blocked by the rear scraper 24. The cleaning liquid gathers on the rear scraper 24, that is, gathers in the space enclosed by the rear scraper 24 and the shell of the machine head, which can ensure that the cleaning liquid is in full contact with the rear roller brush 22, and as the rear roller brush 22 rotates, the rear roller brush 22 is fully cleaned. It should be noted here that in the first cleaning stage, at least part of the cleaning liquid will flow forward to contact the front roller brush 21, which plays a role in wetting the front roller brush 21, which is beneficial to improving the cleaning effect of the front roller brush 21.

[0117] It should be noted here that the above reverse rotation refers to the direction opposite to the rotation direction of the scrubber when it is normally cleaning the floor. Fig.10 As shown, when the floor scrubber is working normally to clean the floor, the front roller brush 21 rotates forward, and the rear roller brush 22 also rotates forward. The rotation direction is as shown in FIG. Fig.10 Indicated by the arrow.

[0118] Furthermore, if Fig.11 As shown, the rear scraper 24 and the outlet 115 of the cleaning liquid are both lower than the axis of the rear roller brush 22, and the rear scraper 24 and the outlet 115 are located on opposite sides of the rear roller brush 22. When the floor scrubber is operating normally to clean the floor, the rear roller brush 22 rotates forward, and the cleaning liquid can only soak the lower end of the rear roller brush 22, and soak about a quarter of the outer peripheral surface of the rear roller brush 22. The position of the rear roller brush 22 soaked in the cleaning liquid is squeezed by the rear scraper 24 after rotating a small angle, and the cleaning liquid cannot rotate with the rear roller brush 22 and stay on the rear roller brush 22 for a long time; when the rear roller brush 22 rotates in the reverse direction, the cleaning liquid carried by the lower end of the rear roller brush 22 will be squeezed by the rear scraper 24 only after rotating a large angle, and the cleaning liquid can basically soak the rear roller brush 22 all the time. Therefore, the water utilization rate of the rear roller brush 22 in the reverse rotation is higher than that in the forward rotation.

[0119] It can be understood that when the floor scrubber cleans the floor normally, the front roller brush 21 rotates forward. During this process, the front roller brush 21 contacts the surface to be cleaned, driving the hair and other garbage on the surface to rotate. The garbage will move upward from the rear side of the front roller brush 21 and gather on the comb teeth 25, thereby preventing the garbage from secondary contamination of the surface to be cleaned.

[0120] In order to improve the cleaning effect of the front roller brush 21, in the first cleaning stage, the front roller brush 21 also rotates in the opposite direction. It should be noted here that in the first cleaning stage, the rotation direction of the front roller brush 21 is opposite to the rotation direction of the front roller brush 21 during normal cleaning of the floor scrubber. The front roller brush 21 rotates in the opposite direction to bring the hair and other dirt usually gathered on the comb teeth 25 to the front roller brush 21 by contacting with the comb teeth 25 on the rear side of the front roller brush 21, so that the hair and other dirt fall into the base station 100 with the front roller brush 21 and mix with the sewage.

[0121] Specifically, Fig.12 and Fig.13 As shown, the comb teeth 25 include an intercepting portion 251 and a combing portion 252. The intercepting portion 251 is connected to the housing of the machine head. The intercepting portion 251 is a convex structure, and its length direction is the axial direction of the front roller brush 21. The combing portion 252 is arranged at the bottom end of the intercepting portion 251. The combing portion 252 includes a plurality of teeth arranged at intervals, and the teeth extend vertically downward and contact the front roller brush 21. When the floor scrubber is working normally to clean the floor, the front roller brush 21 rotates forward, and the combing portion 252 is located upstream of the intercepting portion 251 to collect hair and other garbage. The intercepting portion 251 squeezes the outer periphery of the front roller brush 21, and as the vacuum motor in the floor scrubber is started, sewage and garbage are sucked into the sewage pipe 26 to prevent sewage and garbage from secondary contamination of the surface to be cleaned. When the base station 100 is connected to the cleaning head 200 of the floor scrubber, when the front roller brush 21 rotates forward, the combing part 252 is located upstream of the intercepting part 251 to collect hair and other garbage. The intercepting part 251 squeezes the outer periphery of the front roller brush 21. If the vacuum motor is started, sewage and part of the garbage are sucked into the sewage pipe 26. When the front roller brush 21 rotates reversely, the cleaning liquid can rotate with the front roller brush 21 and be blocked by the intercepting part 251, so that more cleaning liquid is gathered in the space enclosed by the front roller brush 21 and the intercepting part 251, so as to improve the cleaning effect of the front roller brush 21.

[0122] In the first cleaning stage, the front roller brush 21 rotates in the reverse direction, the bottom end of the front roller brush 21 contacts the cleaning liquid, and drives the cleaning liquid to rotate upward from the front side, so that the cleaning liquid can be squeezed by the interception part 251 after the front roller brush 21 rotates at a large angle, which can extend the time of the cleaning liquid on the front roller brush 21, thereby improving the cleaning effect. And as the front roller brush 21 rotates in the reverse direction, the hair and garbage collected on the combing part 252 can be wiped off.

[0123] In this embodiment, the first cleaning stage is used to clean the rear roller brush 22 and clean the hair and other dirt on the front roller brush 21 and the comb teeth 25. The sewage passing through the rear roller brush 22 is used to soak and rinse the hair and other dirt, which is beneficial to improve the utilization rate of water resources and will not cause secondary pollution to the front roller brush 21.

[0124] Finally, the generated sewage is sucked out to avoid secondary contamination of the rear roller brush 22 by the generated sewage. It should be noted here that when the cleaning head 200 is placed on the base station 100, the fluid flow cavity enclosed by the cleaning head 200 and the base station 100 is relatively closed, and the fluid flow cavity is connected to the sewage discharge pipe 26 in the cleaning head 200, so that the sewage in the cavity can be discharged by vacuum suction.

[0125] After the first cleaning stage, the second cleaning stage begins. In the second cleaning stage, cleaning liquid is re-supplied to the rear side of the rear roller brush 22. By providing new cleaning liquid for cleaning, the front roller brush 21 and the rear roller brush 22 can be prevented from being contaminated again.

[0126] After that, the front roller brush 21 and the rear roller brush 22 both rotate in the forward direction, and the forward rotation direction is the rotation direction of the roller brush when the floor scrubber cleans the floor. Specifically, the front roller brush 21 rotates from the rear side of the front roller brush 21 around the top to the front side (in order to Fig.10 The rear roller brush 22 rotates counterclockwise from the front side of the rear roller brush 22 around the top to the rear side (at an angle of 1.30°). Fig.10 In this process, the rear roller brush 22 has been cleaned and its surface is clean. In the first cleaning stage, the rear scraper 24 squeezes the rear roller brush 22, and the contact area between the cleaning liquid and the rear roller brush 22 is about one-fourth of the outer peripheral surface of the rear roller brush 22. In the second cleaning stage, the rear roller brush 22 only acts as a carrier of the cleaning liquid, driving the cleaning liquid to flow quickly to the front side to contact with the front roller brush 21 and clean the front roller brush 21. In the first cleaning stage, the hair and other dirt on the front roller brush 21 and the comb teeth 25 have been preliminarily cleaned. In the second cleaning stage, the front roller brush 21 rotates and deeply contacts with the cleaning liquid, which can fully clean the front roller brush 21.

[0127] Finally, the sewage is sucked out to prevent the sewage from secondarily contaminating the front roller brush 21 and the rear roller brush 22 .

[0128] When sucking out the sewage in the first cleaning stage, the front roller brush 21 and the rear roller brush 22 both rotate forward intermittently, that is, after rotating forward for a specified time, they pause for a preset time and then rotate forward again. During the forward rotation of the front roller brush 21 and the rear roller brush 22, the sewage can be driven between the front roller brush 21 and the rear roller brush 22, so that it can enter the sewage pipe 26 from the entrance of the sewage pipe 26 at the bottom of the machine head under the drive of the vacuum motor. Furthermore, the surface height of the front roller brush 21 in contact with the base station 100 is relatively low, so that the sewage is close to the front roller brush 21, thereby better draining the sewage.

[0129] During the forward rotation of the front roller brush 21 and the rear roller brush 22, the dust suction motor in the floor scrubber is started at intervals. By starting the dust suction motor at intervals, the sewage can be sucked out in multiple times, thereby improving the sewage removal effect.

[0130] Furthermore, the power of the dust suction motor is gradually increased so that the adsorption force on the sewage is increased as the sewage decreases, which is beneficial to discharge the sewage.

[0131] When sucking out sewage in the second cleaning stage, the front roller brush 21 and the rear roller brush 22 rotate forward and reverse alternately. For example, the front roller brush 21 and the rear roller brush 22 rotate forward first, and then rotate reversely. During the forward rotation of the front roller brush 21 and the rear roller brush 22, the dust suction motor in the cleaning head 200 is started to suck the sewage accumulated between the front roller brush 21 and the rear roller brush 22 into the sewage pipe 26. When the front roller brush 21 and the rear roller brush 22 rotate reversely, the dust suction motor is turned off, and the front roller brush 21 and the rear roller brush 22 rotate reversely, which can bring the water located at the front side of the front roller brush 21 and the rear side of the rear roller brush 22 into the space between the front roller brush 21 and the rear roller brush 22 through the outer peripheral surfaces of the front roller brush 21 and the rear roller brush 22, so as to improve the sewage discharge effect.

[0132] Optionally, when sucking out the sewage in the second cleaning stage, the power of the dust suction motor is gradually increased so that the adsorption force on the sewage is increased as the sewage decreases, which is conducive to draining the sewage.

[0133] Since the front roller brush 21 is dirtier than the rear roller brush 22 , in order to improve the cleaning effect of the front roller brush 21 , the time for supplying cleaning liquid in the second cleaning stage is longer than the time for supplying cleaning liquid in the first cleaning stage, so as to provide sufficient cleaning liquid for cleaning the front roller brush 21 .

[0134] After the front roller brush 21 and the rear roller brush 22 are cleaned, they enter the drying stage to keep the front roller brush 21 and the rear roller brush 22 in a dry state to avoid generating odor or breeding bacteria. The second cleaning stage also includes a drying stage, during which the fan 121 and the heating element 122 in the cleaning head 200 are started, and the front roller brush 21 and the rear roller brush 22 rotate intermittently. By starting the fan 121 and the heating element 122, hot air can be generated, and the hot air contacts the rotating front roller brush 21 and the rear roller brush 22, so that the front roller brush 21 and the rear roller brush 22 can be dried, and the drying efficiency is high.

[0135] Optionally, the heating element 122 may be a PTC heating element.

[0136] Furthermore, in the drying stage, the fan 121 is started earlier than the heater 122 , and the fan 121 is shut down later than the heater 122 , to ensure that the heat is fully utilized, which is also beneficial to maintaining the life of the fan 121 and the heater 122 .

[0137] In order to ensure the safety of use during the drying process, when a user input command is received (for example, when a switch button or a speed adjustment button is triggered), the fan 121 and the heating element 122 are turned off, and the floor scrubber enters a charging state or a standby state.

[0138] Furthermore, when it is detected that the cleaning head 200 is lifted out of the base station 100, the fan 121 and the heating element 122 are turned off, and the floor scrubber enters a standby state to ensure user safety.

[0139] In some embodiments, the drying component 12 may include only the fan 121 without the heater 122 , and the front roller brush 21 and the rear roller brush 22 may be dried only by driving the air flow through the fan 121 .

[0140] Embodiment 2

[0141] This embodiment provides a self-cleaning method for a cleaning device, including a first cleaning stage, a second cleaning stage and a drying stage.

[0142] In the first cleaning stage, the cleaning liquid is supplied to the rear side of the rear roller brush 22 by the water pump for 20 seconds. During this process, the front roller brush 21 and the rear roller brush 22 do not rotate, and the dust collection motor is not started.

[0143] The front roller brush 21 and the rear roller brush 22 rotate in the opposite direction for 13 seconds, and the water pump and the dust suction motor do not work. The rear roller brush 22 rotates in the opposite direction to collect the cleaning liquid on the rear scraper 24, so that the cleaning liquid is fully in contact with the rear roller brush 22. The front roller brush 21 rotates in the opposite direction to collect hair and other dirt that usually collects on the comb teeth 25 onto the front roller brush 21, and drops into the sewage as the front roller brush 21 rotates.

[0144] The water pump does not work, the dust suction motor starts, and the front roller brush 21 and the rear roller brush 22 rotate forward for 5 seconds. During this process, most of the sewage is sucked into the sewage pipe 26 by the dust suction motor. At this time, the frequency of the dust suction motor is 50HZ, the power is 150W, and the efficiency is 65%.

[0145] After a pause of 1 second, the water pump and the dust suction motor are not started, and the front roller brush 21 and the rear roller brush 22 rotate forward and continue for 5 seconds, so that the sewage is gathered between the front roller brush 21 and the rear roller brush 22.

[0146] After a pause of 1 second, the water pump and the dust collecting motor are not started, and the front roller brush 21 and the rear roller brush 22 rotate forwardly for 13 seconds.

[0147] The water pump does not start, the dust-collecting motor starts, and the front roller brush 21 and the rear roller brush 22 rotate forward, and continue for 10s. At this moment, the frequency of the dust-collecting motor is 50HZ, the power is 250W, and the efficiency is 75%.

[0148] In the second cleaning stage, the cleaning liquid is supplied to the rear side of the rear roller brush 22 by the water pump for 30 seconds. During this process, the front roller brush 21 and the rear roller brush 22 do not rotate, and the dust collection motor is not started.

[0149] The front roller brush 21 and the rear roller brush 22 rotate forward for 13 seconds, and the water pump and the dust suction motor are not working. The rear roller brush 22 rotates forward to drive the cleaning liquid toward the front roller brush 21, so that the cleaning liquid fully contacts the front roller brush 21, and cleans the front roller brush 21 as the front roller brush 21 rotates.

[0150] The water pump does not work, the dust suction motor starts, and the front roller brush 21 and the rear roller brush 22 rotate forward for 5 seconds. During this process, most of the sewage is sucked into the sewage pipe 26 by the dust suction motor. At this time, the frequency of the dust suction motor is 50HZ, the power is 150W, and the efficiency is 65%.

[0151] After a pause of 1 second, the water pump and the dust suction motor are not started, and the front roller brush 21 and the rear roller brush 22 rotate in the opposite direction for 5 seconds, so that the sewage is gathered between the front roller brush 21 and the rear roller brush 22.

[0152] After a pause of 1 second, the water pump and the dust collecting motor are not started, and the front roller brush 21 and the rear roller brush 22 rotate forwardly for 13 seconds.

[0153] The water pump does not start, the dust-collecting motor starts, and the front roller brush 21 and the rear roller brush 22 rotate forward, and continue for 10s. At this time, the frequency of the dust-collecting motor is 50HZ, the power is 150W, and the efficiency is 65%.

[0154] The water pump does not start, the dust-collecting motor starts, and the front roller brush 21 and the rear roller brush 22 rotate forward, and continue for 15s. At this moment, the frequency of the dust-collecting motor is 50HZ, the power is 250W, and the efficiency is 75%.

[0155] The user enters the drying stage after pressing a speed adjustment button (eg, a speed adjustment button for a roller brush).

[0156] In the drying stage, the fan 121 and the heating element 122 are started, and the front roller brush 21 and the rear roller brush 22 rotate for 5 ms every 3 minutes, and repeat 40 times. After that, the fan 121 and the heating element 122 are turned off, and the scrubber returns to the charging mode.

[0157] Among them, after entering the drying stage, after the fan 121 is started, the heating element 122 delays 20 seconds to enter the working state; at the end of the drying stage, the heating element 122 is turned off first, and the fan 121 delays working for 3 minutes.

[0158] If the on / off key or speed control key of the floor scrubber is triggered during the drying process, the drying stage is immediately ended and the washing machine returns to the charging state. The heating element 122 stops working immediately, the front roller brush 21 and the rear roller brush 22 stop rotating immediately, and the fan 121 delays working for 3 minutes.

[0159] If the floor scrubber is picked up from the base station 100 during the drying process, the drying stage is immediately terminated and the machine returns to the standby state. The heating element 122 stops working immediately, the front roller brush 21 and the rear roller brush 22 stop rotating immediately, and the fan 121 delays working for 3 minutes.

[0160] In other embodiments, the working parameters of the vacuum motor and the duration of each stage can be set according to actual needs.

[0161] Embodiment 3

[0162] This embodiment provides a cleaning device, which is further improved on the basis of the first embodiment.

[0163] To improve cleaning effect, refer to Figure 6 and Figure 8 As shown, both the front cleaning area b and the rear cleaning area a are provided with multiple rows of protrusions 1111, and the multiple protrusions 1111 in the same row are arranged at intervals along the axial direction of the roller brush, and the two adjacent rows of protrusions 1111 are arranged in a staggered manner. On the one hand, the protrusions 1111 can massage the roller brush to play a cleaning role, and on the other hand, the staggered protrusions 1111 can play a diversion role, so that the liquid is evenly distributed in the rear cleaning area a, ensuring that the liquid flowing out of the liquid outlet 115 can be dispersed to the left and right sides in sequence, so that the liquid is evenly in contact with the rear roller brush 22.

[0164] In this embodiment, the protrusion 1111 is a spherical protrusion with a smooth surface without edges or concave corners, and has a good effect on the diversion of the liquid.

[0165] In order to disperse the liquid more evenly and quickly, the spacing between two adjacent rows of protrusions 1111 is smaller than the radial dimension of the protrusions 1111, so that after the liquid is diverted by one row of protrusions 1111, it can contact with another row of protrusions 1111 set in an offset manner as soon as possible, thereby ensuring uniform distribution of the liquid through multiple diversions.

[0166] Furthermore, the number of the multiple rows of protrusions 1111 gradually decreases from the back to the front, so as to guide the liquid to gather toward the front side and prevent the liquid from entering the air outlet 116.

[0167] In this embodiment, Fig.14 As shown, the machine head includes a casing, and the bottom surface of the casing is provided with a front installation area, a connecting portion and a rear installation area in sequence from front to rear. The front roller brush 21 is rotatably arranged in the front installation area, and the rear roller brush 22 is rotatably arranged in the rear installation area. The connecting portion connects the front installation area and the rear installation area, and the connecting portion is arranged opposite to the guide surface 1114.

[0168] Furthermore, auxiliary rollers 29 are rotatably provided at both the front and rear ends of the connection part, and the auxiliary rollers 29 are used for auxiliary support when the floor scrubber is working to reduce movement resistance. When the cleaning head 200 is placed on the base station 100, the cleaning head 200 is supported by the base station 100, and the auxiliary rollers 29 protrude from the bottom surface of the head and are suspended, so that a water channel is formed between the connection part and the guide surface 1114, so that the liquid flows from the rear cleaning area a to the front cleaning area b.

[0169] To remove wastewater from cleaning processes, such as Fig.15 As shown, the cleaning head 200 is also provided with a sewage pipe 26, one end of which is connected to the front installation area at the bottom of the machine head, and is located between the front roller brush 21 and the rear roller brush 22, and is arranged toward the front roller brush 21, and the other end of the sewage pipe 26 is connected to the sewage tank and the handheld component 400 on the floor scrubber in sequence. During the cleaning process, the handheld component 400 is started to generate negative pressure in the front installation area to suck the sewage into the sewage pipe 26, and collect it in the sewage tank through the sewage pipe 26.

[0170] In order to improve the suction effect of the negative pressure generated in the sewage pipe 26 on the sewage, the shape and size of the cleaning tank are adapted to the cleaning head 200. When the cleaning head 200 is placed in the cleaning tank, the side of the cleaning head 200 can abut against the side wall of the cleaning tank, so that a fluid flow cavity is formed between the cleaning tank and the cleaning head 200, and the fluid flow cavity is located between the front roller brush 21 and the rear roller brush 22. When negative pressure is generated in the sewage pipe 26, since the fluid flow cavity is not connected to the outside, the suction effect of the sewage in the closed cavity can be improved.

[0171] In order to further improve the recovery effect of the sewage after cleaning, the height of the projection of the front cleaning area b on the plane perpendicular to the axis of the front roller brush 21 gradually increases from the front and rear ends with the axis of the front roller brush 21 as the center. That is, the front and rear ends of the front cleaning area b are high, and the middle height is low. This arrangement can make the liquid in the front cleaning area b of the flow channel gather in the middle of the front cleaning area b, so as to be easily sucked into the sewage pipe 26.

[0172] Furthermore, if Figure 8 As shown, an overflow channel 118 is provided on the base station 100, and the overflow channel 118 is used to connect the cleaning tank with the bottom surface of the base station 100, so that when a large amount of cleaning liquid exists in the base station 100 and cannot be discharged in time, the water is discharged through the overflow channel 118 to avoid excessive cleaning liquid in the cleaning tank from entering the shell through the air outlet 116, thereby affecting the safe use of electrical components in the shell.

[0173] Specifically, the overflow channel 118 is arranged on the front side of the cleaning tank and connects the cleaning tank with the ground. Because the front and rear ends of the front cleaning area b are high and the middle height is low, the overflow channel 118 is located at a higher position on the bottom surface of the cleaning tank, which can not only ensure that a certain amount of cleaning liquid is retained in the cleaning tank, but also in special circumstances, such as when a user misoperates and pours a large amount of liquid into the cleaning tank, the liquid can be quickly discharged from the base station 100 to avoid damage to the electrical components in the base 100.

[0174] In this embodiment, Figure 7 and Fig.16 As shown, the seat 11 includes a shell and an annular cover 113, and the shell includes an upper cover 111 and a bottom shell 112. The cleaning tank is arranged on the upper cover 111, and a drainage groove 1112 is arranged on the upper cover 111 around the outer periphery of the cleaning tank, and the drainage groove 1112 constitutes a flow channel; the annular cover 113 is arranged on the upper cover 111, and at least covers the outside of the drainage groove 1112 to form a flow channel with the drainage groove 1112. By setting the cover 113, the drainage groove 1112 can be shielded, so that the flow channel is hidden, dust accumulation in the flow channel can be avoided, and the flow channel is ensured to be open.

[0175] Further, the drainage groove 1112 includes a first drainage section 11121, a second drainage section 11122 and a third drainage section 11123 which are connected in sequence. The first drainage section 11121 is arranged at the front side of the shell, and the first drainage section 11121 extends in the left-right direction, the head end of the first drainage section 11121 is connected to the liquid inlet 114, and the tail end of the first drainage section 11121 extends toward the edge of the shell in the left-right direction. The second drainage section 11122 extends in the front-back direction, the head end of the second drainage section 11122 is connected to the tail end of the first drainage section 11121, and the tail end of the second drainage section 11122 is connected to the third drainage section 11123; the third drainage section 11123 extends in the left-right direction, the head end of the third drainage section 11123 is connected to the second drainage section 11122, and the tail end of the third drainage section 11123 is connected to the liquid outlet 115. The height of the first drainage section 11121 gradually decreases from the head end to the tail end, and the height of the second drainage section 11122 gradually decreases from the head end to the tail end, so as to guide the liquid in the drainage groove 1112 to flow from the liquid inlet 114 to the liquid outlet 115 under the action of gravity. Optionally, the height of the third drainage section 11123 can also be gradually reduced from the head end to the tail end, so as to further guide the liquid to flow into the cleaning groove through the liquid outlet 115.

[0176] In this embodiment, two groups of the first drainage section 11121, the second drainage section 11122 and the third drainage section 11123 are provided and symmetrically distributed, so that the two groups of the first drainage section 11121, the second drainage section 11122 and the third drainage section 11123 are respectively connected through the liquid inlet 114 and the liquid outlet 115 to form an annular flow channel. This arrangement enables the liquid provided by the liquid outlet 115 to fully flow into the cleaning tank to ensure that the liquid is fully in contact with the rear roller brush 22 and the front roller brush 21.

[0177] Furthermore, the height of the cover body 113 protruding from the bottom surface of the cleaning groove is 25mm-35mm, for example, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm or 34mm. This height range can ensure that the cleaning groove has a certain depth, improve the stability of the cleaning head 200 on the base station, and also help to improve the cleaning effect.

[0178] The inner side of the top surface of the cover body 113 is provided with a chamfer, and the chamfer forms an inclined surface, which can guide the liquid splashed thereon so that the liquid flows into the cleaning tank.

[0179] In some embodiments, the flow channel may be an exposed structure. For example, the cover body 113 is not provided, and the flow channel is formed only by the drainage groove 1112, which can also achieve the purpose of cleaning the roller brush.

[0180] like Fig.15 As shown, the cleaning head 200 further includes a front scraper 23, which is arranged on the bottom surface of the head and located at the rear side of the front roller brush 21, that is, the front scraper 23 is arranged at the front end of the connecting portion. When the cleaning head 200 is placed in the cleaning tank, a gap is provided between the upper surface of the cleaning tank and the front scraper 23. The gap can prevent the front scraper 23 from being deformed or losing flexibility due to backlog during the cleaning roller brush. The gap can also ensure that liquid and hot air can pass through to ensure the cleaning and drying effects.

[0181] Furthermore, in this embodiment, the base station 100 also has the function of drying the roller brush. Fig.17 As shown, the base station 100 further includes a drying component 12, and an air duct 117 is provided in the base body 11. The drying component 12 is provided in the air duct 117 to provide hot air. The drying component 12 includes a fan 121 and a heating element 122, and the heating element 122 is provided at the front side of the air outlet of the fan 121. After the fan 121 and the heating element 122 are started, the fan 121 drives the air flow, and the air flow is heated by the heating element 122 to form hot air, and the hot air enters the air duct 117 and is blown to the front roller brush 21 and the rear roller brush 22 through the air duct 117 to achieve the purpose of drying.

[0182] In order to evenly distribute the hot air passing through the heating element 122, a guide rib 1113 is further provided in the air duct 117. The guide rib 1113 may be an arc-shaped rib extending from the heating element 122 to the air outlet 116 to guide the flow direction of the hot air. Furthermore, the air duct 117 and the guide rib 1113 are symmetrically arranged relative to the center line of the left and right directions of the base station 100 to make the hot air distribution more even.

[0183] In some embodiments, the drying component 12 may include only the fan 121 without the heater 133 , and the front roller brush 21 and the rear roller brush 22 may be dried only by driving the air flow through the fan 121 .

[0184] In order to make full use of the hot air, an air outlet 116 connected to the air duct 117 is provided on the side wall of the cleaning tank, and the air outlet 116 is located between the front roller brush 21 and the rear roller brush 22. It can be understood that by arranging the cleaning head 200 in the cleaning tank, the front roller brush 21 and the rear roller brush 22 will form a fluid flow cavity through the cooperation of the cleaning tank and the machine head. The fluid flow cavity is a relatively closed space. After the hot air enters the fluid flow cavity through the air outlet 116, it can contact the front roller brush 21 and the rear roller brush 22 respectively, and will not flow directly into the atmosphere, thereby ensuring that the hot air is fully in contact with the front roller brush 21 and the rear roller brush 22, so as to shorten the drying time of the front roller brush 21 and the rear roller brush 22. It should be noted here that when cleaning and drying the cleaning head 200, the front roller brush 21 and the rear roller brush 22 can rotate so that the hot air and the liquid can fully contact the outer peripheral surface of the roller brush to improve the drying effect.

[0185] In this embodiment, Fig.18 As shown, the housing includes a bottom shell 112 and an upper cover 111. The upper cover 111 is detachably connected to the bottom shell 112, and the bottom shell 112 and the upper cover 111 form an air duct 117, and the air outlet 116 is provided on the upper cover 111. The cleaning tank is provided on the upper cover 111, and a drainage groove 1112 is provided on the upper cover 111 around the outer periphery of the cleaning tank. The air duct 117 and the flow channel are integrated on the housing, and the structure is simple, which is conducive to reducing costs.

[0186] Specifically, Fig.18As shown, the upper cover 111 includes an upper cover plate 1115, an inner side plate 1116, a groove bottom plate 1118, an outer side plate 1117 and an air guide cover 1119. The upper cover plate 1115 constitutes a cleaning groove, the inner side plate 1116 is arranged around the circumferential edge of the upper cover plate 1115, and holes are opened on the inner side plate 1116 to form a liquid outlet 115, a liquid inlet 114 and an air outlet 116 respectively. The outer side plate 1117 is arranged on the outer side of the inner side plate 1116, and the bottom of the outer side plate 1117 is connected to the inner side plate 1116 through the groove bottom plate 1118 to enclose the drainage groove 1112, and the groove bottom plate 1118 is connected to the upper cover plate 1115 where the liquid inlet 114 and the liquid outlet 115 are arranged, so that the cleaning liquid can enter and exit the cleaning groove. The air outlet 116 is disposed below the drainage groove 1112 to prevent the cleaning liquid and the drying airflow from interfering with each other.

[0187] The air guide cover 1119 is U-shaped and connected to the outer side plate 1117 to form an air guide channel of a cylindrical structure, and the air outlet 116 and the air duct 117 are respectively connected to the inside of the cylindrical structure. When the shell and the cover body 113 are assembled, the air duct 117 is connected to the inside of the cylindrical structure, and the cover body 113 blocks the top surface of the cylindrical structure.

[0188] like Fig.19 As shown, the upper cover plate 1115 has a folded edge 11151 extending upward at a position corresponding to the air outlet 116, and the folded edge 11151 is located outside the outer side plate 1117 and the air outlet 116 and is spaced apart from the outer side plate 1117. By providing the folded edge 11151, during the cleaning process of the front roller brush 21 and the rear roller brush 22, the cleaning liquid can be prevented from entering the housing through the air outlet 116, thereby preventing the electrical components inside the housing from being damaged.

[0189] When drying the front roller brush 21 and the rear roller brush 22, the folded edge 11151 can guide the hot air to turn, so that the hot air in the air duct 117 can first pass over the folded edge 11151 upwards, and then return to pass between the folded edge 11151 and the outer side plate 1117 to enter the air outlet 116, thereby drying the front roller brush 21 and the rear roller brush 22. Optionally, the folded edge 11151 and the upper cover plate 1115 have a smooth transition to reduce wind energy loss.

[0190] Further, refer to Fig.18 and Fig.19, a flange 1131 is provided in the cleaning tank, and the flange 1131 is used to abut against the head of the cleaning head 200, so that a gap is provided between the bottom surface of the head and the upper surface of the cleaning tank to facilitate the flow of hot air. Specifically, a flange 1131 is provided on the cover body 113 around the air outlet 116, and the flange 1131 is used to abut against the bottom surface of the head between the front roller brush 21 and the rear roller brush 22, so that the cleaning tank, the head, the front roller brush 21 and the rear roller brush 22 can be surrounded to form a fluid flow cavity located between the front roller brush 21 and the rear roller brush 22, and the fluid flow cavity is connected to the air outlet 116, which can prevent the hot air from directly entering the atmosphere.

[0191] Among them, the surface materials of the front roller brush 21 and the rear roller brush 22 are flexible. When the cleaning head 200 is placed in the cleaning groove, the front roller brush 21 and the rear roller brush 22 are in contact with the upper surface of the cleaning groove. Under the action of the gravity of the cleaning head 200, the surfaces of the front roller brush 21 and the rear roller brush 22 are squeezed and deformed after contacting the cleaning groove, so that the front roller brush 21 and the rear roller brush 22 cooperate with the cleaning groove to form a relatively closed fluid flow cavity.

[0192] When the cleaning head 200 is placed in the base 100, the flange 1131 supports the bottom surface of the head, so that the auxiliary roller 29 is suspended in the cleaning tank, that is, a gap is provided between the bottom surface of the auxiliary roller 29 and the upper surface of the cleaning tank.

[0193] In addition, the flange 1131 can also play a role in positioning the cleaning head 200 to prevent the cleaning head 200 from tilting up, so that the liquid spray port on the cleaning head 200 faces the liquid inlet 114.

[0194] In order to make the roller brush dry evenly along the axial direction, air outlets 116 are provided on the left and right side walls of the cleaning tank. Hot air can enter from both axial ends of the roller brush. The hot air volume is large and the contact with the roller brush is more even, which is beneficial to improve the drying efficiency.

[0195] In this embodiment, by providing the flange 1131 to support the cleaning head 200, a fluid flow cavity can be formed between the bottom surface of the head and the upper surface of the cleaning tank, and the fluid flow cavity is used for the flow of liquid or gas to achieve the effect of cleaning and drying; the flange 1131 abuts against the bottom surface of the head, and can also improve the sealing of the gap to prevent gas from overflowing or liquid from splashing. It can be understood that the height of the fluid flow cavity depends on the height of the flange 1131.

[0196] In this embodiment, Figure 19-21As shown, the flange 1131 is provided on the cover body 113, and the flange 1131 includes a horizontal support rib 11311, which is located above the air outlet 116 and extends substantially horizontally. Further, the flange 1131 also includes a vertical support rib 11312, at least two ends of the horizontal support rib 11311 are connected with the vertical support rib 11312, the vertical support rib 11312 is located below the horizontal support rib 11311, and the vertical support rib 11312 abuts against the upper cover plate 1115 to improve the strength of the flange 1131. Optionally, the number of the vertical support ribs 11312 can be set to at least two, and at least two vertical support ribs 11312 are arranged at intervals along the extension direction of the air outlet 116 to ensure ventilation.

[0197] The location and shape of the flange 1131 can be adjusted according to actual conditions. In some embodiments, the flange 1131 can be arranged on the housing, for example, on the inner side plate 1116 of the upper cover 111 .

[0198] In some embodiments, such as Fig. 22 As shown, the flange 1131 may not be provided with horizontal support ribs 11311, but only includes at least two vertical support ribs 11312. The vertical support ribs 11312 may be connected to the inner side plate 1116 or the upper cover plate 1115 of the shell, or may be directly connected to the cover body 113.

[0199] In order to better improve the stability of the cleaning head 200 on the base station 100, Fig.14 and Fig.23 As shown, the distance between the axis of the front roller brush 21 and the axis of the rear roller brush 22 is defined as M, and the length L of the flange 1131 can be 0.3M-0.75M, so as to ensure that the flange 1131 has sufficient contact length with the bottom surface of the head, thereby improving the stability of the cleaning head 200. Exemplarily, the length L of the flange 1131 can be 0.3M, 0.35M, 0.4M, 0.45M, 0.5M, 0.55M, 0.6M, 0.65M, 0.7M, or 0.75M.

[0200] In order to further improve the stability of the flange 1131 in supporting the cleaning head 200, the width B of the flange 1131 is 3 mm-10 mm, so as to ensure that the flange 1131 has a certain contact area with the bottom surface of the head, which can not only improve the supporting effect, but also avoid damage to the flange 1131 or the bottom surface of the head due to excessive pressure. Exemplarily, the width B of the flange 1131 can be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm.

[0201] Furthermore, the top surface of the cover body 113 protrudes upward at a position corresponding to the air outlet 116 to form a cover body protrusion 1132. By providing the cover body protrusion 1132, the distance between the inner top surface of the cover body 113 and the bottom shell 112 can be increased, and the distance of the gas flowing upward in the air duct 117 can be increased, so that the airflow can be better turned back at the inner side surface of the cover body protrusion 1132 to change the flow direction, so that the airflow can further enter the air outlet 116 under the guidance of the folded edge 11151. Optionally, the protruding height of the cover body protrusion 1132 is 5mm-8mm, for example, 6mm or 7mm.

[0202] Furthermore, two cover protrusions 1132 are arranged on the cover 113 in a relative manner, and each cover protrusion 1132 has a guiding slope. The two guiding slopes are arranged in a relative manner, and the guiding slopes extend obliquely from top to bottom toward the center of the cleaning tank, so that the distance between the top ends of the two guiding slopes is large, and the distance between the bottom ends of the two guiding slopes is small. When placing the cleaning head 200, this arrangement allows the cleaning head 200 to move into the cleaning tank under the action of the two guiding slopes, so as to achieve the effect of initial positioning when placing the cleaning head 200 in the base station 100, and ensure that the cleaning head 200 can be placed in the cleaning tank.

[0203] In order to further ensure the drying effect, the top surface height of the flange 1131 is lower than the top surface height of the cover body 113, that is, the top surface height of the flange 1131 is lower than the height of the cover body protrusion 1132, so that when the user places the cleaning head 200, if there is an error operation that causes one end of the cleaning head 200 (the left end is taken as an example below) to overlap the top surface of the cover body 113, the cleaning head 200 will be tilted, and the right end of the cleaning head 200 will abut the bottom surface of the cleaning groove. At this time, the flange 1131 on the left and the air outlet 116 on the left are both located below the cleaning head 200. When the drying function is started at this time, the dry airflow provided by the left air outlet 116 can still contact the front roller brush 21 and the rear roller brush 22 on the cleaning head 200, thereby realizing a partial drying function.

[0204] In this embodiment, the distance between the axis of the front roller brush 21 and the axis of the rear roller brush 22 is 160 mm, the length of the flange 1131 is 80 mm, the height H of the flange 1131 is 7 mm, and the width B of the flange 1131 is 5 mm.

[0205] like Fig.24As shown, a motor 271, a gear reduction box 272 and a water pump 28 are provided in the machine head. A liquid spraying port is provided on the front side of the machine head, and the liquid spraying port is connected to the clean water tank. The water pump 28 is used to drive the water in the clean water tank to spray out from the liquid spraying port. The motor 271 is respectively connected to the front roller brush 21 and the rear roller brush 22 through the gear reduction box 272. Specifically, the motor 271 is located between the front roller brush 21 and the rear roller brush 22, and the output shaft of the motor 271 is parallel to the axis of the front roller brush 21, and the space between the front roller brush 21 and the rear roller brush 22 is fully utilized for installation. Compared with integrating the motor 271 in the roller brush, the motor 271 in this embodiment is arranged between the front roller brush 21 and the rear roller brush 22, which can reduce the radial size of the roller brush, is conducive to the rational use of space, and reduces the weight of the roller brush, thereby reducing the driving load of the motor 271.

[0206] Furthermore, the water pump 28 is disposed between the front roller brush 21 and the rear roller brush 22, and the water pump 28 and the motor 271 are respectively located at the axial ends of the front roller brush 21 to balance the weight of the cleaning head 200. When the user lifts the floor scrubber and places it on the base station 100, the cleaning head 200 can remain stable and fall into the base station 100. Figure 1 , Figure 4 and Figure 6 As shown, the base station 100 includes a base body 11 and a fixed end 13, the fixed end 13 is arranged on the base body 11, the base body 11 is used to support the cleaning head 200, and the fixed end 13 is used to dock with the body assembly 300 of the floor scrubber to support the body assembly 300, thereby maintaining the stability of the floor scrubber. In addition, the fixed end 13 is in electrical contact with the body assembly 300, so that the base station 100 can charge the body assembly 300.

[0207] In the cleaning equipment provided in this embodiment, the base station 100 adopts a hidden flow channel, and the water sprayed by the water spraying device of the floor scrubber flows along the flow channel, so that the water flowing out of the liquid outlet 115 first contacts the rear roller brush 22, and then flows to the front roller brush 21 through the sloped guide surface 1114, so that both the front and rear roller brushes 22 can have a large amount of water for cleaning; through the air duct 117 set on the base station 100, hot air is introduced between the front roller brush 21 and the rear roller brush 22 for rapid drying, the drying effect is good, and the drying time is short.

[0208] Embodiment 4

[0209] Because the body assembly 300 of the existing floor scrubber integrates the sewage tank, the clean water tank, the handle and the power source of the handheld assembly, the body assembly 300 is very heavy and difficult to disassemble; in addition, after disassembling the body assembly 300, the body assembly 300 is unstable as a whole, and the sewage in the sewage tank is easy to pour out. At the same time, the detachable structure leads to poor sealing of the air duct. Therefore, the body assembly 300 of the floor scrubber in the prior art is generally not detachable, which makes it difficult to clean the cleaning head 200 and makes the floor scrubber inconvenient to store as a whole.

[0210] To solve the above problem, in this embodiment, Fig.25 As shown, the body assembly 300 and the cleaning head 200, the handheld assembly 400 and the handle assembly 500 are all detachably connected, the handheld assembly 400 and the handle assembly 500 are detachably connected, and a reverse flow valve is provided in the sewage tank, which can prevent the sewage from overflowing when the sewage tank is dumped. In addition, the clean water tank is integrated on the cleaning head 200, which saves the length of the fluid transport pipeline and facilitates the cleaning head 200 to spray water on the ground when cleaning the ground.

[0211] When the cleaning head 200 needs to be cleaned, the handheld component 400 and the handle component 500 can be removed first, and then the body component 300 integrated with the sewage tank can be pulled out together, or the body component 300 integrated with the sewage tank and the cleaning head 200 can be removed to clean the roller brush and the sewage pipe 26 at the bottom of the cleaning head 200.

[0212] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A base station, used for docking a cleaning head (200) of a floor scrubber, the cleaning head (200) comprising a front roller brush (21) and a rear roller brush (22), characterized in that: The base station comprises a base body (11), the base body (11) is provided with a cleaning groove for accommodating a cleaning head (200), a flow channel is provided in the circumferential side wall of the cleaning groove, a liquid inlet (114) connected to the flow channel is provided on the front side wall of the cleaning groove, the liquid inlet (114) can receive liquid sprayed from a liquid spray port on the cleaning head (200), and a liquid outlet (115) connected to the flow channel is provided on the rear side wall of the cleaning groove, so that the liquid in the flow channel passes through the rear roller brush (22) and the front roller brush (21) in sequence.

2. The base station according to claim 1, characterized in that The bottom surface of the cleaning groove comprises a front cleaning area b cooperating with the front roller brush (21) and a rear cleaning area a cooperating with the rear roller brush (22), the front cleaning area b and the rear cleaning area a being connected via a guide surface (1114), and the front end height of the guide surface (1114) is lower than the rear end height of the guide surface (1114); Preferably, the front cleaning area b and / or the rear cleaning area a are both provided with a plurality of protrusions (1111); Preferably, the plurality of protrusions (1111) in the post-cleaning area a are arranged in multiple rows, and the protrusions (1111) in two adjacent rows are arranged in a staggered manner; Preferably, the spacing between two adjacent rows of protrusions (1111) is smaller than the radial dimension of the protrusions (1111); Preferably, the number of the multiple rows of protrusions (1111) gradually decreases from back to front.

3. The base station according to claim 2, characterized in that The height of the front cleaning area b gradually increases from the projection position of the axis of the front rolling brush (21) on the bottom surface of the cleaning tank to the front and rear ends; Preferably, an overflow channel (118) is provided on the seat body (11), one end of the overflow channel (118) is connected to the cleaning tank, and the other end is connected to the outer wall of the seat body (11); Preferably, the overflow channel (118) is arranged at the front end of the front cleaning area b.

4. The base station according to any one of claims 1 to 3, characterized in that: The cleaning head (200) further comprises a front scraper (23), wherein the front scraper (23) is arranged at the rear side of the front roller brush (21), and when the cleaning head (200) is placed in the cleaning tank, the bottom surface of the cleaning tank and the front scraper (23) are arranged at a distance; Preferably, the height of the liquid outlet (115) is lower than the height of the axis of the rear roller brush (22).

5. The base station according to any one of claims 1 to 9, characterized in that: The seat body (11) comprises: A shell, the cleaning groove is arranged on the shell, and a drainage groove (1112) is arranged on the shell in a circumferential direction around the cleaning groove; an annular cover body (113), the cover body (113) being arranged on the shell and at least covering the outside of the drainage groove (1112) so as to enclose the flow channel together with the drainage groove (1112); Preferably, the drainage groove (1112) comprises a first drainage section (11121), a second drainage section (11122) and a third drainage section (11123) which are connected in sequence; The first drainage section (11121) is located at the front end of the seat body (11), the first drainage section (11121) is connected to the liquid inlet (114), and the height of the first drainage section (11121) gradually decreases from the head end to the tail end; The second drainage section (11122) extends in the front-to-back direction, and the height of the second drainage section (11122) gradually decreases from the head end to the tail end; The third drainage section (11123) is located at the rear end of the seat body (11), and the third drainage section (11123) is connected to the liquid outlet (115); Preferably, an air duct (117) and a drying component (12) are provided in the shell, the drying component (12) is arranged in the air duct (117), an air outlet (116) is provided on the side wall of the cleaning tank, the air outlet (116) is communicated with the air duct (117), and when the cleaning head (200) is placed in the cleaning tank, the air outlet (116) is located between the front roller brush (21) and the rear roller brush (22); Preferably, the housing comprises: Bottom shell (112); An upper cover (111) is connected to the bottom shell (112); the air duct (117) is formed between the upper cover (111) and the bottom shell (112); the air outlet (116) and the drainage groove (1112) are both located on the upper cover (111); and the air outlet (116) is located below the drainage groove (1112); Preferably, the upper cover (111) comprises: Upper cover plate (1115); An inner side plate (1116) is arranged around the circumference of the upper cover plate (1115), and holes are opened on the inner side plate (1116) to respectively form the liquid outlet (115), the liquid inlet (114) and the air outlet (116); An outer side plate (1117) is arranged at intervals on the outer side of the inner side plate; a groove bottom plate (1118), connected to the inner side plate (1116) and the outer side plate (1117), so as to cooperate with the inner side plate (1116) and the outer side plate (1117) to enclose the drainage groove (1112); the groove bottom plate (1118) is respectively connected to the upper cover plate (1115) at the liquid outlet (115) and the liquid inlet (114); and the air outlet (116) is located below the groove bottom plate (1118); Preferably, the upper cover plate (1115) is bent upward to form a folded edge (11151), and the folded edge (11151) is located on the outer side of the air outlet (116); Preferably, the upper cover (111) further includes an air guide cover (1119), the air guide cover (1119) is U-shaped and connected to the outer side plate (1117), the air guide cover (1119) and the outer side plate (1117) form an air guide channel, and the air guide channel is connected to the air duct (117).

6. The base station according to any one of claims 1 to 5, characterized in that: The dimension of the liquid outlet (115) along the axial direction of the rear roller brush (22) is 1 / 3 to 1 / 2 times the axial dimension of the rear roller brush (22); Preferably, the shape and size of the cleaning groove are adapted to the cleaning head (200), so that a closed cavity is formed between the cleaning groove and the cleaning head (200), and the closed cavity is located between the front roller brush (21) and the rear roller brush (22).

7. A cleaning device, characterized in that: The invention comprises a floor scrubber and a base station as claimed in any one of claims 1 to 6, wherein the floor scrubber comprises a cleaning head (200), and the cleaning head (200) comprises a machine head and a front roller brush (21) and a rear roller brush (22) rotatably arranged on the bottom surface of the machine head.

8. The cleaning device according to claim 7, characterized in that The cleaning head (200) further comprises a rear scraper (24), the rear scraper (24) being arranged on the bottom surface of the machine head and being located in front of the rear roller brush (22), the rear scraper (24) being in contact with the rear roller brush (22), and the height of the rear scraper (24) being lower than the height of the axis of the rear roller brush (22); Preferably, the cleaning head (200) further comprises comb teeth (25) connected to the machine head, wherein the comb teeth (25) are located at the rear side of the front roller brush (21) and abut against the front roller brush (21); The comb teeth (25) include: A cut-off portion (251) connected to the machine head, the cut-off portion (251) extending along the axial direction of the front roller brush (21); A combing portion (252) comprising a plurality of teeth arranged at intervals, wherein the plurality of teeth are arranged at the bottom end of the intercepting portion (251); It is defined that when the cleaning device cleans the surface to be cleaned, the rear roller brush (22) and the front roller brush (21) both rotate in a positive direction, and when the front roller brush (21) rotates in a positive direction, the combing portion (252) is located upstream of the intercepting portion (251); Preferably, a motor (271) and a reduction box are provided in the machine head, the motor (271) and the reduction box are located between the front roller brush (21) and the rear roller brush (22), the reduction box is provided with two output ends, the motor (271) is transmission-connected to the reduction box, one of the two output ends is transmission-connected to the front roller brush (21), and the other is transmission-connected to the rear roller brush (22); Preferably, the cleaning head (200) further comprises a clean water tank and a water pump (28) arranged in the head, the clean water tank is in communication with the liquid spraying port, and the water pump (28) is used to drive the liquid in the clean water tank to flow toward the liquid spraying port; Preferably, the water pump (28) is located between the front roller brush (21) and the rear roller brush (22), and the motor (271) and the water pump (28) are arranged along the axial direction of the front roller brush (21).

9. A self-cleaning method for a cleaning device, applied to the cleaning device as claimed in claim 7 or 8, characterized in that: It is defined that when the cleaning device cleans the surface to be cleaned, the rear roller brush (22) and the front roller brush (21) both rotate in a positive direction, and the self-cleaning method of the cleaning device includes a first cleaning stage and a second cleaning stage; The first cleaning stage includes: supplying cleaning fluid to the rear side of the rear roller brush (22); The rear roller brush (22) rotates in the reverse direction, wherein the rear roller brush (22) rotates in the reverse direction by the rear side of the rear roller brush (22) rotating around the top and toward the front side; Vacuuming sewage; The second cleaning stage includes: supplying cleaning fluid to the rear side of the rear roller brush (22); The front roller brush (21) and the rear roller brush (22) both rotate in a positive direction, wherein the front roller brush (21) rotates in a positive direction by the rear side of the front roller brush (21) passing over the top and rotating toward the front side.

10. The self-cleaning method of the cleaning equipment according to claim 9, characterized in that: The rear side of the front roller brush (21) is provided with comb teeth (25) that abut against the front roller brush (21); in the first cleaning stage, the front roller brush (21) rotates in the reverse direction while the rear roller brush (22) rotates in the reverse direction; Preferably, the suction removal of sewage in the first cleaning stage comprises: The front roller brush (21) and the rear roller brush (22) both rotate intermittently in a positive direction; During the forward rotation of the front roller brush (21) and the rear roller brush (22), the dust collecting motor in the cleaning device is started at intervals; Preferably, the second cleaning stage further comprises sucking out sewage, and the sucking out sewage in the second cleaning stage comprises: The front roller brush (21) and the rear roller brush (22) both rotate in a forward direction and in a reverse direction alternately; While the front roller brush (21) and the rear roller brush (22) are rotating in the forward direction, starting the dust suction motor in the cleaning device; When the front roller brush (21) and the rear roller brush (22) rotate in opposite directions, the dust collection motor is turned off; Preferably, the power of the dust suction motor increases gradually; Preferably, the time for supplying the cleaning liquid in the second cleaning stage is longer than the time for supplying the cleaning liquid in the first cleaning stage; Preferably, the second cleaning stage further includes a drying stage, during which the fan (121) and the heating element (122) in the cleaning head (200) are started, and the front roller brush (21) and the rear roller brush (22) rotate intermittently; Preferably, in the drying stage, the fan (121) is started earlier than the heating element (122), and the fan (121) is turned off later than the heating element (122); Preferably, in the drying stage, if a user input instruction is received or it is detected that the cleaning head (200) is lifted, the fan (121) and the heating element (122) are turned off.

Images