Surface cleaning device and surface cleaning system

By using the hinged design between the dust collection box and the housing, and the water storage tank design, the problem of incomplete dust collection by the sweeper is solved, achieving efficient dust collection and convenient cleaning even when the position is fixed under the influence of wind.

CN224155603UActive Publication Date: 2026-04-24GUANGDONG MUWEI INTELLIGENT TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG MUWEI INTELLIGENT TECHNOLOGY CO LTD
Filing Date
2025-05-16
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

The dust collection box of existing robot vacuums is separate from the body, which makes it easy for relative displacement to occur during the vacuuming process, creating gaps and resulting in incomplete vacuuming and low efficiency.

Method used

The dust collection box is hinged to the housing and detachably connected by a buckle. Combined with a water tank and a water pumping mechanism, it uses negative pressure to suck up dust and cleans dust by flipping the dust collection box, ensuring that the position is fixed under the influence of wind and avoiding gaps.

Benefits of technology

It ensures that the dust collection box remains fixed in position to the housing even under wind conditions, avoiding gaps, making dust collection more thorough and efficient, and easy to clean.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of cleaning equipment, and particularly relates to a surface cleaning device which comprises a shell and a dust collecting box, a first through hole penetrating front and back is formed in the middle of the shell, a containing groove is formed in the top of the shell, the dust collecting box is contained in the containing groove, and the outer end of the dust collecting box is hinged to the shell. The inner end of the dust collection box is detachably clamped with the shell through a buckle, the dust collection box is of a hollow structure, the dust collection box is provided with a first air outlet and a filtering part, and a cavity of the dust collection box is in butt joint communication with the middle of a cavity of the first through hole through the filtering part. In addition, the utility model further provides a surface cleaning system, in the dust collection process, even if wind influence exists, the relative position between the dust collection box and the shell is kept fixed, gaps are avoided, and dust collection work is more thorough and efficient. Dust attached and collected to the filtering part of the dust collecting box can be dumped and cleaned by turning over the dust collecting box, and cleaning is convenient.
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Description

Technical Field

[0001] This utility model belongs to the field of cleaning equipment technology, specifically relating to a surface cleaning device and a surface cleaning system. Background Technology

[0002] In existing robotic vacuum cleaners, the dust collection box is separate from the main body. During operation, the dust collection box and the main body will move relative to each other under the propulsion of the wind, and the gap between them will increase. This causes a lot of dust to pass through the gap, resulting in incomplete dust collection, low dust collection efficiency, and failure to meet market demand.

[0003] In conclusion, the relevant technologies urgently need improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a surface cleaning device that addresses the shortcomings of existing technologies. One side of the dust collection box is hinged to the body, so that even with wind, the relative position between the dust collection box and the body remains fixed during vacuuming, preventing gaps and making vacuuming more thorough and efficient. The dust collection box can be emptied and cleaned by flipping it over, making cleaning convenient.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A surface cleaning device includes a housing and a dust collection box. The housing has a first through hole running through its center, and a receiving groove is provided on the top of the housing. The dust collection box is housed in the receiving groove. The outer end of the dust collection box is hinged to the housing, and the inner end of the dust collection box is detachably snapped to the housing by a buckle. The dust collection box has a hollow structure and is provided with a first air outlet and a filter. The cavity of the dust collection box is connected to the middle of the cavity of the first through hole through the filter. The housing is provided with a water storage tank, which is arranged around the receiving groove. The water storage tank is covered with a cover plate, and the cover plate is provided with a water inlet filled with a removable sealing plug.

[0007] In one embodiment, the two ends of the first through hole are a first air inlet and a second air outlet, respectively, and the size of the first through hole gradually decreases along the direction from the first air inlet to the second air outlet.

[0008] In one embodiment, a baffle that can be opened in one direction outward is provided at the second air outlet.

[0009] In one embodiment, a water pumping mechanism is housed in the water storage tank. The water pumping mechanism is provided with an inlet pipe and an outlet pipe. The outer end of the inlet pipe is housed in the water storage tank and abuts against the bottom of the water storage tank. The outlet pipe passes through the bottom of the water storage tank, and the outer end of the outlet pipe is suspended directly above the cavity bottom plate of the housing.

[0010] In one embodiment, the surface cleaning device further includes at least one rotary cleaning mechanism, each of which is disposed at the bottom of the housing. The bottom plate of the housing is provided with at least one drip hole, and each drip hole is disposed directly above each of the rotary cleaning mechanisms.

[0011] In one embodiment, the rotary cleaning mechanism includes a rotary motor, a gear transmission assembly, a rotary table bracket, and a rotary table mop. The rotary motor and the gear transmission assembly are both housed and fixed within the cavity of the housing. The rotating shaft of the rotary table bracket passes through the bottom plate of the housing. A first gear is provided at the outer end of the rotating shaft and is connected to the output end of the gear transmission assembly. A second gear is provided at the output end of the rotary motor and is connected to the input end of the gear transmission assembly. The rotary motor drives the rotary table bracket to rotate through the gear transmission assembly. The rotary table mop is detachably and washably disposed on the bottom surface of the rotary table bracket.

[0012] In one embodiment, the surface cleaning device further includes a plurality of electrode blocks, each of which is disposed on the outer side of the housing, and the different electrodes of the pumping mechanism and each of the rotating motors are electrically connected to the different electrode blocks one by one through different wires.

[0013] In one embodiment, a flow guide groove is provided on the bottom plate of the housing, the flow guide groove extends and covers each of the drip holes, and the outer end of the water outlet pipe is suspended directly above the flow guide groove.

[0014] In one embodiment, the surface cleaning device further includes a main unit, which includes a drive unit and a lidar assembly with a probe of the lidar assembly disposed on the top of the main unit. The main unit has an opening for mounting the housing, and the housing as a whole has a profile that matches the rear of the main unit, such that the housing is configured to be detachable integrally from the main unit.

[0015] Another object of this application is to provide a surface cleaning system comprising a base station having a dust collection inlet exposed on the surface of its housing; and a surface cleaning device as described above.

[0016] The beneficial effects of this application are as follows: In application, the water storage tank is arranged around the outer perimeter of the receiving tank, making the water storage tank and the shell an integral structure, which is more robust and can hold as much cleaning water as possible in a limited space. In operation, the sealing plug is opened first, and then cleaning water is injected into the water storage tank through the water inlet. Then the sealing plug is used to seal the water inlet to prevent water from overflowing. After assembling the shell and the main unit, the air inlet of the built-in exhaust fan of the main unit is connected to the first air outlet to draw air, creating a negative pressure on the dust collection box and the cavity of the first through hole. Dust and debris are sucked into the cavity of the first through hole by the negative pressure of the opening at the end of the first through hole. The filter part filters the debris and dust, so that large debris is retained in the cavity of the first through hole, while small dust is filtered and adsorbed on the filter part. During the dust collection process, even if there is wind, the relative position between the dust collection box and the shell remains fixed to avoid gaps, making the dust collection work more thorough and efficient. By flipping the dust collection box, the dust collected on the filter part of the dust collection box can be emptied and cleaned, making cleaning convenient. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is one of the perspective views in the embodiments of this utility model;

[0019] Figure 2 This is a second perspective view of an embodiment of the present utility model;

[0020] Figure 3 This is the third perspective view of the embodiments of this utility model;

[0021] Figure 4 This is a perspective view of the dust collection box being flipped over to clean dust in an embodiment of this utility model;

[0022] Figure 5 This is an exploded view of an embodiment of the present invention;

[0023] Figure 6 This is one of the partially exploded perspective views in the embodiments of this utility model;

[0024] Figure 7 This is a second partially exploded perspective view of an embodiment of the present utility model;

[0025] Figure 8 for Figure 7 Top view in the middle;

[0026] Figure 9 This is the third partially exploded perspective view of the present invention.

[0027] Figure 10 This is a schematic diagram of the structure when the shell is separated from the main unit in an embodiment of this utility model;

[0028] Figure 11 This is one of the structural schematic diagrams of the host, housing and base station during assembly in an embodiment of this utility model;

[0029] Figure 12 This is the second schematic diagram of the structure of the host, housing and base station during assembly in this utility model embodiment;

[0030] The components are as follows: 1. Housing; 11. First through hole; 111. First air inlet; 112. Second air outlet; 12. Receptacle; 13. Water storage tank; 14. Cover plate; 15. Water inlet; 16. Sealing plug; 17. Drip hole; 18. Guide channel; 2. Dust collection box; 21. First air outlet; 22. Filter section; 3. Buckle; 4. Baffle; 5. Water pumping mechanism; 6. Rotary cleaning mechanism; 61. Rotary motor; 62. Gear transmission assembly; 63. Rotary support; 64. Rotary mop; 7. Electrode block; 8. Main unit; 81. LiDAR assembly; 9. Base station. Detailed Implementation

[0031] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The present invention will be further described in detail below with reference to the accompanying drawings, but this is not intended to limit the present invention.

[0035] like Figures 1 to 12 As shown, a surface cleaning device includes a housing 1 and a dust collection box 2. The housing 1 has a first through hole 11 in the middle, and a receiving groove 12 on the top of the housing 1. The dust collection box 2 is housed in the receiving groove 12. The outer end of the dust collection box 2 is hinged to the housing 1, and the inner end of the dust collection box 2 is detachably snapped to the housing 1 by a buckle 3. The dust collection box 2 has a hollow structure and is provided with a first air outlet 21 and a filter section 22. The cavity of the dust collection box 2 is connected to the middle of the cavity of the first through hole 11 through the filter section 22. The housing 1 is provided with a water storage tank 13, which is arranged around the periphery of the receiving groove 12. The water storage tank 13 is covered with a cover plate 14, and a water inlet 15 is provided on the cover plate 14. The water inlet 15 is filled with a removable sealing plug 16.

[0036] In application, the water storage tank 13 is arranged around the outer perimeter of the receiving tank 12, making the water storage tank 13 and the housing 1 an integral structure, which is more robust and can hold as much cleaning water as possible in a limited space. During operation, the sealing plug 16 is opened first, and then cleaning water is injected into the water storage tank 13 through the water inlet 15. The sealing plug 16 is then used to seal the water inlet 15 to prevent water overflow. After assembling the housing 1 and the main unit 8, the air inlet of the exhaust fan built into the main unit 8 is connected to the first air outlet 21 for exhaust, creating negative pressure on the dust collection box 2 and the cavity of the first through hole 11, thus removing dust. Dust and debris are drawn into the cavity of the first through hole 11 by negative pressure through the opening at the end of the first through hole 11. The filter section 22 filters the debris and dust, causing large debris to remain in the cavity of the first through hole 11, while small dust particles are filtered and adsorbed onto the filter section 22. During the dust collection process, even with the influence of wind, the relative position between the dust collection box 2 and the housing 1 remains fixed, avoiding gaps and making the dust collection work more thorough and efficient. By flipping the dust collection box 2, the dust collected on the filter section 22 of the dust collection box 2 can be emptied and cleaned, making cleaning convenient.

[0037] The filter section 22 is preferably a filter screen, and the sealing plug 16 is preferably a rubber plug (e.g., a rubber plug, a silicone plug, etc.). When there is scale in the water storage tank 13, the cover plate 14 on the water storage tank 13 can be opened to clean the scale in the water storage tank 13. The cover plate 14 is preferably connected to the housing 1 by snap-fit ​​or screw-fit.

[0038] In one embodiment, the two ends of the first through hole 11 are a first air inlet 111 and a second air outlet 112, respectively, and the size of the first through hole 11 gradually decreases along the direction from the first air inlet 111 to the second air outlet 112.

[0039] In application, this structural design helps to accommodate more waste, ensuring stable vacuuming while allowing enough waste to be stored in a limited space.

[0040] In one embodiment, a baffle 4 that can be opened in one direction outward is provided at the second air outlet 112.

[0041] In application, the air inlet of the built-in exhaust fan of the main unit 8 is connected to the first air outlet 21 to draw air, creating a negative pressure on the dust collection box 2 and the cavity of the first through hole 11. Dust and debris are sucked into the cavity of the first through hole 11 by the negative pressure of the first air inlet 111 at the end of the first through hole 11. At this time, the baffle 4 blocks the second air outlet 112 under the action of negative pressure, thereby increasing the negative pressure at the first air inlet 111, which greatly improves the dust collection efficiency.

[0042] In one embodiment, a water storage tank 13 houses a water pumping mechanism 5, which is provided with an inlet pipe and an outlet pipe. The outer end of the inlet pipe is housed in the water storage tank 13 and abuts against the bottom of the water storage tank 13. The outlet pipe passes through the bottom of the water storage tank 13, and the outer end of the outlet pipe is suspended directly above the cavity bottom plate of the housing 1.

[0043] In application, the pumping mechanism 5 is preferably a DC water pump (model: JSBM20-5A, manufacturer: Dongguan Jingbofang Precision Electronics Co., Ltd.). During operation, the pumping mechanism 5 pumps water from the water storage tank 13 to the guide groove 18 on the bottom plate of the housing 1 cavity through the inlet and outlet pipes, which is beneficial for subsequent cleaning work.

[0044] In one embodiment, the surface cleaning device further includes at least one rotary cleaning mechanism 6, each rotary cleaning mechanism 6 is disposed at the bottom of the housing 1, and the bottom plate of the housing 1 is provided with at least one drip hole 17, each drip hole 17 being disposed one-to-one with the top of each rotary cleaning mechanism 6.

[0045] In application, the water pumping mechanism 5 pumps water from the water storage tank 13 to the guide channel 18 on the bottom plate of the housing 1 cavity through the water inlet and outlet pipes. The guide channel 18 guides the cleaning water to each drip hole 17, and the water drips from each drip hole 17 onto each turntable cleaning mechanism 6. Each turntable cleaning mechanism 6 performs cleaning under the moisture of the water, making the cleaning more thorough.

[0046] In one embodiment, the rotary cleaning mechanism 6 includes a rotary motor 61, a gear transmission assembly 62, a rotary support 63, and a rotary mop 64. The rotary motor 61 and the gear transmission assembly 62 are both housed and fixed in the cavity of the housing 1. The rotating shaft of the rotary support 63 passes through the bottom plate of the housing 1. The outer end of the rotating shaft is provided with a first gear, which is connected to the output end of the gear transmission assembly 62. The output end of the rotary motor 61 is provided with a second gear, which is connected to the input end of the gear transmission assembly 62. The rotary motor 61 drives the rotary support 63 to rotate through the gear transmission assembly 62. The rotary mop 64 is detachably and washably disposed on the bottom surface of the rotary support 63.

[0047] In application, the rotary motor 61 is preferably a permanent magnet DC micro motor (model: RS520-011, manufacturer: Dongguan Guomeng Motor Co., Ltd.). The rotary motor 61 drives the turntable bracket 63 to rotate through the gear transmission assembly 62, which in turn drives the turntable mop 64 on the turntable bracket 63 to rotate. The water pumping mechanism 5 pumps water from the water storage tank 13 to the guide groove 18 on the bottom plate of the housing 1 cavity through the water inlet pipe and the water outlet pipe. The guide groove 18 guides the cleaning water to each drip hole 17. The water then drips through each drip hole 17 onto each turntable bracket 63 and / or turntable mop 64. Each turntable mop 64 rotates and cleans under the moisture of the water, making the cleaning work more efficient.

[0048] The turntable mop 64 and the turntable bracket 63 are preferably connected by Velcro, which facilitates the installation for cleaning the bottom surface and the cleaning after disassembly.

[0049] In one embodiment, the surface cleaning device further includes a plurality of electrode blocks 7, each of which is disposed on the outer side of the housing 1. The different electrodes of the pumping mechanism 5 and each rotary motor 61 are electrically connected to the different electrode blocks 7 one by one through different wires.

[0050] In application, the different electrodes of the pumping mechanism 5 and each rotary motor 61 are electrically connected to the different electrode blocks 7 one by one through different wires. During operation, the housing 1 and the main unit 8 are assembled. At this time, each electrode block 7 is electrically connected to each electrode plate in the main unit 8, thereby enabling the main unit 8 to supply power to the pumping mechanism 5 and each rotary motor 61, ensuring that the cleaning work can be carried out smoothly.

[0051] In this design, multiple positive electrode blocks 7 are assembled and fixed on one substrate, and multiple negative electrode blocks 7 are assembled and fixed on another substrate, which avoids short circuits caused by winding and increases the overall neatness, aesthetics, and safety factor.

[0052] In one embodiment, a guide groove 18 is provided on the bottom plate of the housing 1, the guide groove 18 extends and covers each drip hole 17, and the outer end of the water outlet pipe is suspended directly above the guide groove 18.

[0053] In application, the pumping mechanism 5 uses the inlet and outlet pipes to pump water from the water storage tank 13 to the guide channel 18 on the bottom plate of the housing 1 cavity. The guide channel 18 guides the cleaning water to each drip hole 17, avoiding water flowing everywhere and affecting normal operation, which helps to improve the stability of the operation.

[0054] In one embodiment, an auxiliary driven roller is provided at the bottom of the housing 1, which helps to increase the stability of the operation.

[0055] In one embodiment, the surface cleaning device further includes a main unit 8, which includes a drive unit and a lidar assembly 81. The probe of the lidar assembly 81 is disposed on the top of the main unit 8. The main unit 8 has an opening for mounting a housing 1. The housing 1 as a whole has a shape that matches the rear of the main unit 8, such that the housing 1 is configured to be detachable as a whole from the main unit 8.

[0056] In the application, the main unit 8 is equipped with an exhaust fan (brushless sweeper fan, model: WFD-BB8035, manufacturer: Shenzhen Weifengda Electronic Technology Co., Ltd.), a drive unit (permanent magnet DC micro motor, model: RS520-011, manufacturer: Dongguan Guomeng Motor Co., Ltd., preferably at least 2 units), and a lidar component 81 (laser head rangefinder, model: G10 G10s). The S50 (manufacturer: Foshan Lightning Leopard Robotics Co., Ltd.) consists of a control circuit integrated panel, a rechargeable battery (preferably a lithium-ion battery pack), and at least two drive rollers. The output end of the drive unit is connected to the drive shaft of each drive roller via a gear transmission belt. During operation, the exhaust fan, drive unit, LiDAR component 81, rechargeable battery, water pumping mechanism 5, and each rotary motor 61 are all electrically connected to the control circuit integrated panel. The control circuit integrated panel controls the coordinated operation of each unit to complete the cleaning work. The LiDAR component 81 can identify obstacles in a timely manner. After processing the signal, the control circuit integrated panel controls the operation of each drive unit. Each drive unit drives the drive rollers to avoid obstacles in a timely manner, greatly improving cleaning efficiency.

[0057] like Figures 1 to 12As shown, this application also provides a surface cleaning system, which includes a base station 9 having a dust collection inlet exposed on its outer casing surface; and the surface cleaning device as described above. The specific structure of the surface cleaning device is the same as described in the above embodiments. Since the surface cleaning system adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0058] The base station 9 has a dust collection inlet exposed on its outer shell surface. The dust collection inlet is connected to the second air outlet 112 on the shell 1 for air extraction. At this time, the baffle 4 is flipped outward under the action of suction, and the garbage and dust accumulated in the first through hole 11 are sucked into the base station 9, which is conducive to the host 8 to perform cleaning work in a cycle.

[0059] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A surface cleaning device, characterized in that: The device includes a housing (1) and a dust collection box (2). The housing (1) has a first through hole (11) running through its center. The top of the housing (1) has a receiving groove (12). The dust collection box (2) is housed in the receiving groove (12). The outer end of the dust collection box (2) is hinged to the housing (1), and the inner end of the dust collection box (2) is detachably snapped into the housing (1) by a buckle (3). The dust collection box (2) has a hollow structure and is provided with a first... The dust collection box (2) has an air outlet (21) and a filter section (22). The cavity of the dust collection box (2) is connected to the middle of the cavity of the first through hole (11) through the filter section (22). The housing (1) is provided with a water storage tank (13). The water storage tank (13) is arranged around the periphery of the receiving groove (12). The water storage tank (13) is covered with a cover plate (14). The cover plate (14) is provided with a water inlet (15). The water inlet (15) is filled with a removable sealing plug (16).

2. The surface cleaning apparatus of claim 1 wherein: The two ends of the first through hole (11) are the first air inlet (111) and the second air outlet (112), respectively. The size of the first through hole (11) gradually decreases along the direction from the first air inlet (111) to the second air outlet (112).

3. The surface cleaning apparatus of claim 2 wherein: A baffle (4) that can be opened in one direction to the outside is provided at the second air outlet (112).

4. The surface cleaning apparatus of claim 1 wherein: The water storage tank (13) contains a water pumping mechanism (5), which is provided with an inlet pipe and an outlet pipe. The outer end of the inlet pipe is housed in the water storage tank (13) and abuts against the bottom of the water storage tank (13). The outlet pipe passes through the bottom of the water storage tank (13), and the outer end of the outlet pipe is suspended directly above the cavity bottom plate of the housing (1).

5. The surface cleaning apparatus of claim 4 wherein: The surface cleaning device further includes at least one rotary cleaning mechanism (6), each of which is located at the bottom of the housing (1). The bottom plate of the housing (1) is provided with at least one drip hole (17), and each drip hole (17) is provided in a corresponding manner above each of the rotary cleaning mechanisms (6).

6. The surface cleaning apparatus of claim 5, wherein: The rotary cleaning mechanism (6) includes a rotary motor (61), a gear transmission assembly (62), a rotary support (63), and a rotary mop (64). The rotary motor (61) and the gear transmission assembly (62) are both housed and fixed in the cavity of the housing (1). The rotating shaft of the rotary support (63) passes through the bottom plate of the housing (1). The outer end of the rotating shaft is provided with a first gear, which is connected to the output end of the gear transmission assembly (62). The output end of the rotary motor (61) is provided with a second gear, which is connected to the input end of the gear transmission assembly (62). The rotary motor (61) drives the rotary support (63) to rotate through the gear transmission assembly (62). The rotary mop (64) is detachably and washably disposed on the bottom surface of the rotary support (63).

7. The surface cleaning apparatus of claim 6 wherein: The surface cleaning device also includes multiple electrode blocks (7), each of which is disposed on the outer side of the housing (1). The different electrodes of the pumping mechanism (5) and each of the rotary motors (61) are electrically connected to the different electrode blocks (7) one by one through different wires.

8. The surface cleaning apparatus of claim 5, wherein: A guide groove (18) is provided on the bottom plate of the housing (1), the guide groove (18) extends and covers each of the drip holes (17), and the outer end of the water outlet pipe is suspended directly above the guide groove (18).

9. The surface cleaning apparatus of any one of claims 1 to 8, wherein: The surface cleaning device also includes a main unit (8), which includes a drive unit and a lidar assembly (81). The probe of the lidar assembly (81) is disposed on the top of the main unit (8). The main unit (8) has an opening for mounting the housing (1). The housing (1) as a whole has an external shape that matches the rear of the main unit (8), such that the housing (1) is configured to be detachable from the main unit (8) as a whole.

10. A surface cleaning system characterized by: Includes a base station (9), which has a dust collection inlet exposed on the surface of its outer casing; And the surface cleaning apparatus as described in any one of claims 1 to 9.