Maintenance base station and cleaning system

Abstract

The utility model provides a maintenance base station and a cleaning system, the maintenance base station comprises a soiling solution transfer box, and the soiling solution transfer box comprises a box body and a vacuumizing structure. The box body comprises a liquid containing cavity, and an air exhaust hole and a liquid inlet which are communicated with the liquid containing cavity. The vacuumizing structure communicates with the air exhaust hole and is configured to vacuumize the liquid containing cavity so that a negative pressure environment can be formed in the liquid containing cavity, and dirty liquid in the cleaning equipment in butt joint with the liquid inlet can be recycled into the liquid containing cavity from the liquid inlet.

Description

Technical Field

[0001] The present disclosure relates to a maintenance base station and a cleaning system. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, wet surface cleaning equipment such as floor scrubbers are widely used in people's daily lives to assist users in surface cleaning. Generally speaking, wet surface cleaning equipment is equipped with a base station that can dock with it and provide maintenance for it. The base station has the function of recycling dirty liquid. After the wet surface cleaning equipment completes the cleaning work, it docks with the base station, and the base station can recycle the dirty liquid generated in the wet surface cleaning equipment. Therefore, how to better realize the recycling of dirty liquid is one of the research directions of wet surface cleaning equipment. Utility Model Content

[0003] In a first aspect of the present disclosure, a maintenance base station is provided for maintaining cleaning equipment, the maintenance base station comprising: a dirty liquid transfer box, the dirty liquid transfer box comprising: a box body, comprising: a liquid holding chamber and an air suction hole and a liquid inlet connected to the liquid holding chamber; a vacuum structure connected to the air suction hole, configured to vacuum the liquid holding chamber so that a negative pressure environment is formed in the liquid holding chamber, and the dirty liquid in the connected cleaning equipment is recovered from the liquid inlet into the liquid holding chamber.

[0004] In some embodiments, the waste liquid transfer box further includes: a liquid inlet pipeline and a first control valve, the liquid inlet pipeline is connected to the liquid inlet, and the first control valve is configured to control the on-off of the liquid inlet pipeline.

[0005] In some embodiments, the box body further includes: a drain port connected to the liquid holding chamber, the drain port is arranged at the bottom of the box body, and the waste liquid transfer box further includes: a drain pipeline connected to the drain port.

[0006] In some embodiments, the liquid discharge port and the liquid inlet port are independent of each other, and the waste liquid transfer box also includes a second control valve, which is configured to control the on-off of the liquid discharge pipeline; or, the liquid discharge port reuses the liquid inlet port, and the first control valve includes: a first channel, a second channel and a third channel, the first channel is connected to the liquid inlet port, the second channel is connected to the liquid inlet pipeline, and the third channel is connected to the liquid discharge pipeline. When the negative pressure environment is formed in the liquid holding chamber, the first channel is connected to the second channel, and when the waste liquid transfer box completes the waste liquid recovery, the first channel is connected to the third channel.

[0007] In some embodiments, the vacuum pumping structure includes: a vacuum pump, an exhaust pipeline and an exhaust pipeline, the air inlet channel of the vacuum pump is connected to the exhaust hole through the exhaust pipeline, and the exhaust channel of the vacuum pump is connected to the exhaust pipeline.

[0008] In some embodiments, the body of the dirty liquid transfer box further includes: a cleaning liquid inlet communicated with the liquid containing chamber, so that the cleaning liquid flows from the cleaning liquid inlet into the liquid containing chamber to clean the wall surface of the liquid containing chamber.

[0009] In some embodiments, the dirty liquid transfer box also includes: a first liquid supply pipeline and a third control valve, the first liquid supply pipeline is connected to the cleaning liquid inlet, and the third control valve is configured to control the on-off of the first liquid supply pipeline; the side wall inside the liquid holding chamber is a concave arc surface, the cleaning liquid inlet is arranged on the side wall of the liquid holding chamber, and the cleaning liquid inlet is configured to allow the cleaning liquid to flow down in a spiral shape along the circumference of the side wall.

[0010] In the second aspect of the present disclosure, a cleaning system is provided, comprising: a cleaning device and the maintenance base station provided in the first aspect above; when the cleaning device is docked with the maintenance base station, the liquid inlet of the dirty liquid transfer box of the maintenance base station is connected to the sewage discharge channel of the cleaning device.

[0011] In some embodiments, the cleaning device includes: an equipment body and a dirty liquid tank arranged on the equipment body, the dirty liquid tank includes: a dirty liquid holding chamber and a sewage inlet, a sewage outlet and a liquid spraying part connected to the dirty liquid holding chamber, the sewage inlet is connected to a sewage recovery channel of the equipment body, and the sewage outlet is connected to the sewage outlet channel; the height of the liquid spraying part is higher than the height of the sewage inlet and the sewage outlet, and the liquid spraying part is configured to make the cleaning liquid flow from top to bottom along the side wall of the dirty liquid holding chamber to the bottom of the dirty liquid holding chamber to clean the wall surface of the dirty liquid holding chamber.

[0012] In some embodiments, the side wall of the dirty liquid holding chamber is a concave arc surface, the liquid spraying part is arranged on the side wall of the dirty liquid holding chamber, and the liquid spraying part is configured to make the cleaning liquid flow down in a spiral shape along the circumference of the side wall of the dirty liquid holding chamber.

[0013] The above description is only an overview of the technical solution provided by the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented according to the contents of the specification. In order to make the above and other features and effects of the present disclosure more obvious and easy to understand, the implementation methods of the present disclosure are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1A schematic diagram showing the structure of a cleaning system according to some embodiments of the present disclosure is shown;

[0015] Figure 2 A schematic diagram showing the structure of a maintenance base station in some embodiments of the present disclosure is shown;

[0016] Figure 3 A schematic diagram showing the structure of a maintenance base station in some other embodiments of the present disclosure is shown;

[0017] Figure 4 A top view of a liquid receiving chamber according to some embodiments of the present disclosure is shown;

[0018] Figure 5 A schematic diagram showing the structure of a maintenance base station in some other embodiments of the present disclosure is shown;

[0019] Figure 6 Shown are schematic structural diagrams of cleaning systems in other embodiments of the present disclosure;

[0020] Figure 7 A schematic diagram showing the structure of the dirty liquid containing chamber in some embodiments of the present disclosure is shown;

[0021] Figure 8 The schematic diagrams of the structures of the dirty liquid containing chambers in other embodiments of the present disclosure are shown. DETAILED DESCRIPTION

[0022] In some examples, the wet surface cleaning equipment can discharge the dirty liquid into the sewage pipe of the base station by gravity drainage, and then discharge it into the sewer, or a fan is set in the base station to recover the dirty liquid in the wet surface cleaning equipment by fan suction. However, in actual research, it was found that the gravity drainage method has high requirements on the relative position relationship of the components, the recovery pressure is not large enough, and it becomes smaller and smaller as the recovery progresses. In the fan suction method, the fan action and sewage recovery are carried out simultaneously, and water vapor can easily enter the inner panel of the fan, affecting the life of the fan.

[0023] Therefore, the disclosed embodiment of the present invention provides a dirty liquid transfer box in the maintenance base station, and evacuates the liquid holding chamber of the box through a vacuum structure to form a negative pressure environment in the liquid holding chamber. The suction force generated by the negative pressure is used to recover the dirty liquid in the connected cleaning equipment into the liquid holding chamber from the liquid inlet. Compared with simple gravity drainage, the suction force is large and not easy to get clogged, which is beneficial to improving the reliability of the maintenance base station in recovering the dirty liquid in the cleaning equipment.

[0024] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that in the accompanying drawings, the size of the elements may be exaggerated for clarity of illustration. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] Figure 1 Schematic diagram of the structure of the cleaning system of some embodiments of the present disclosure is shown. Figure 1 As shown, the cleaning system 1 includes: a cleaning device 20 and a maintenance base station 10 for maintaining the cleaning device 20. For example, when the cleaning device 20 is docked with the maintenance base station 10, the maintenance base station 10 can recover the dirty liquid in the cleaning device 20. For example, the cleaning device 20 can be a floor scrubber, such as a wet surface cleaning device 20 such as a handheld floor scrubber.

[0026] Some embodiments of the present disclosure provide a maintenance base station 10 for maintaining a cleaning device 20 . Figure 2 FIG. 1 is a schematic diagram showing the structure of a maintenance base station 10 in some embodiments of the present disclosure. Figure 2 As shown, the maintenance base station 10 includes: a dirty liquid transfer box 11. The dirty liquid transfer box 11 may include: a box body 110 and a vacuum structure 120. The box body 110 includes: a liquid holding chamber 111 and an air suction hole 112 and a liquid inlet 113 connected to the liquid holding chamber 111. The vacuum structure 120, which is connected to the air suction hole 112, is configured to vacuum the liquid holding chamber 111 so that a negative pressure environment is formed in the liquid holding chamber 111, and the dirty liquid (such as sewage generated after cleaning the floor) in the connected cleaning equipment 20 is recovered from the liquid inlet 113 to the liquid holding chamber 111 by the suction force generated by the negative pressure. It should be noted that the size of the liquid holding chamber 111 can be determined according to the maximum amount of dirty liquid that needs to be recovered in the cleaning equipment 20.

[0027] Compared with simple gravity drainage, the suction force generated by the negative pressure in the liquid holding chamber 111 is used to recover the dirty liquid in the cleaning device 20. The suction force is strong and not easy to be blocked, which is beneficial to improving the reliability of the maintenance base station 10 in recovering the dirty liquid in the cleaning device 20.

[0028] In some embodiments, when the cleaning device 20 is docked with the maintenance base station 10, the height of the liquid inlet 113 of the dirty liquid transfer box 11 can be lower than the height of the sewage outlet 222 of the cleaning device 20, and the suction force generated by the negative pressure in the liquid holding chamber 111 and the gravity of the dirty liquid itself are combined to facilitate faster and more effective recovery of the dirty liquid of the cleaning device 20. Of course, in other embodiments, considering the overall structure and convenient pipeline design, when the suction force generated by the negative pressure in the liquid holding chamber 111 is sufficient to recover the dirty liquid of the cleaning device 20, the height of the liquid inlet 113 of the dirty liquid transfer box 11 can also be higher than the height of the sewage outlet 222 of the cleaning device 20, or be equivalent to the height of the sewage outlet 222 of the cleaning device 20, and this embodiment does not limit this.

[0029] Figure 2 FIG. 1 is a schematic diagram showing the structure of a maintenance base station 10 in some embodiments of the present disclosure. Figure 2 As shown, the box body 110 of the waste liquid transfer box 11 may be hemispherical in shape, with a longitudinal cross section of Figure 2 Of course, in other embodiments, the shape of the box body 110 of the waste liquid transfer box 11 can also be other applicable shapes such as a hemispherical shape, a barrel shape, a cone shape, a square shape or other irregular shapes, etc., and this embodiment does not limit this.

[0030] In some embodiments, the vacuum pumping structure 120 may include: a vacuum pump 121, an air extraction pipeline 122, and an exhaust pipeline 123. The air inlet channel of the vacuum pump 121 is connected to the air extraction hole 112 on the box body 110 of the waste liquid transfer box 11 through the air extraction pipeline 122, and the exhaust channel of the vacuum pump 121 is connected to the exhaust pipeline 123 to exhaust the gas extracted from the liquid holding chamber 111.

[0031] For example, the vacuum degree in the liquid holding chamber 111 can be detected. When the detected vacuum degree reaches a preset vacuum degree threshold, it is determined that the required negative pressure environment has been formed in the liquid holding chamber 111, and sufficient suction can be provided, and the vacuum pump 121 is controlled to stop vacuuming. Among them, the preset vacuum degree threshold can be determined according to the suction force required for the dirty liquid in the recycling cleaning equipment 20. For example, it can be 30KPa. At this time, the dirty liquid transfer box 11 may also include a barometer. For example, the barometer can be arranged in the liquid holding chamber 111, or it can be arranged on the exhaust pipe 122 between the vacuum pump 121 and the exhaust hole 112, so as to monitor the vacuum degree in the liquid holding chamber 111.

[0032] For another example, the time required for the vacuum pump 121 to run to achieve the desired negative pressure environment can be tested in advance as a reference time. The maintenance base station 10 can also include a timer. When the vacuum pump 121 starts to work, the timer is controlled to start timing. When the timing reaches the above reference time, it is determined that the desired negative pressure environment has been formed in the liquid holding chamber 111 and sufficient suction can be provided, and the vacuum pump 121 is controlled to stop vacuuming.

[0033] In some embodiments, in order to facilitate the control of the recovery of the dirty liquid, the dirty liquid transfer box 11 further includes: an inlet pipeline 130 and a first control valve 151. The inlet pipeline 130 is connected to the liquid inlet port 113, and the first control valve 151 is configured to control the on and off of the inlet pipeline 130, for example, it can be connected to the inlet pipeline 130. For example, the first control valve 151 can be a solenoid valve, or it can also be other controllable valves. It can be understood that in the process of vacuuming the liquid holding chamber 111, the first control valve 151 is always in a closed state, and the inlet pipeline 130 is cut off. After a negative pressure environment is formed in the liquid holding chamber 111, the first control valve 151 can be opened to make the inlet pipeline 130 conductive, and the dirty liquid in the docked cleaning device 20 flows into the liquid holding chamber 111 through the inlet pipeline 130 and the liquid inlet port 113 under the suction force generated by the negative pressure in the liquid holding chamber 111, completing the recovery of the dirty liquid of the cleaning device 20.

[0034] In some embodiments, in order to facilitate the discharge of the recovered waste liquid, the box body 110 of the waste liquid transfer box 11 may further include: a liquid discharge port 114 connected to the liquid receiving chamber 111, and the liquid discharge port 114 is arranged at the bottom of the box body 110. The waste liquid transfer box 11 also includes: a liquid discharge pipeline 140, and the liquid discharge pipeline 140 is connected to the liquid discharge port 114.

[0035] For example, Figure 2 As shown, in order to facilitate the inlet and outlet of liquid, the outlet 114 and the inlet 113 can be independently arranged, so that the dirty liquid is recovered from the inlet 113 and discharged from the outlet 114. At this time, the dirty liquid transfer box 11 can also include a second control valve 152, which can be configured to control the on-off of the liquid discharge pipeline 140. For example, the second control valve 152 can be connected to the liquid discharge pipeline 140. For example, the second control valve 152 can be a solenoid valve, or it can also be other controllable valves.

[0036] During use, in order to further ensure the reliability of the dirty liquid recovery, the second control valve 152 can be controlled to open after the dirty liquid transfer box 11 completes the dirty liquid recovery, and the dirty liquid recovered in the dirty liquid transfer box 11 can be discharged through the drain pipe 140. For example, after the first control valve 151 is opened, the second control valve 152 can be opened again after a preset time interval to ensure that the dirty liquid in the cleaning device 20 has been fully recovered into the dirty liquid transfer box 11. Among them, the preset time can be set according to the time actually consumed to recover the dirty liquid in the cleaning device 20. For example, in some application scenarios, the preset time can be more than 10 seconds, such as 10 seconds, 11 seconds or 12 seconds.

[0037] Figure 3 FIG. 1 is a schematic diagram showing the structure of a maintenance base station 10 in some other embodiments of the present disclosure. Figure 3 As shown, in order to reduce the number of openings of the waste liquid transfer box 11 and reduce the difficulty of processing, the drain port 114 can also reuse the above-mentioned inlet port 113. In other words, the inlet port 113 is used for liquid inlet and liquid discharge in a time-sharing manner. At this time, the first control valve 151 can be a three-way valve, including: a first channel a, a second channel b and a third channel c. Among them, the first channel a is connected to the inlet port 113, the second channel b is connected to the inlet pipeline 130, and the third channel c is connected to the drain pipeline 140.

[0038] When a negative pressure environment is formed in the liquid holding chamber 111, the first channel a is connected to the second channel b. At this time, the liquid inlet 113 is used for liquid inlet. Under the suction force generated by the negative pressure, the dirty liquid in the cleaning device 20 enters the liquid holding chamber 111 through the liquid inlet pipeline 130 and the liquid inlet 113.

[0039] When the waste liquid transfer box 11 completes waste liquid recovery, the first channel a is connected to the third channel c. At this time, the liquid inlet 113 is used for drainage. The waste liquid recovered in the liquid holding chamber 111 enters the drainage pipeline 140 through the liquid inlet 113 to be discharged to the sewer.

[0040] In some embodiments, the exhaust pipeline 123 may also be connected to the drain pipeline 140, so that the gas extracted by the vacuum pump 121 is also discharged into the sewer through the drain pipeline 140, so as to avoid the gas discharge affecting the user's experience. For example, when the drain port 114 and the liquid inlet 113 are independent of each other, the second control valve 152 is connected between the exhaust pipeline 123 and the drain pipeline 140 and the drain port 114.

[0041] In some embodiments, in order to facilitate cleaning, the box body 110 of the dirty liquid transfer box 11 further includes: a cleaning liquid inlet 115 connected to the liquid receiving chamber 111, so that the cleaning liquid flows from the cleaning liquid inlet 115 into the liquid receiving chamber 111 to clean the wall surface of the liquid receiving chamber 111. For example, the cleaning liquid can be tap water. Of course, in other examples, the box body 110 of the dirty liquid transfer box 11 can also include an openable cover, and the user can open the cover and pour the cleaning liquid into it to clean the liquid receiving chamber 111.

[0042] In some embodiments, the dirty liquid transfer box 11 may further include: a first liquid supply pipeline 160 and a third control valve 153. The first liquid supply pipeline 160 is connected to the cleaning liquid inlet 115, and the third control valve 153 is configured to control the on-off of the first liquid supply pipeline 160. For example, the third control valve 153 may be connected to the first liquid supply pipeline 160. The cleaning liquid flows in from the first liquid supply pipeline 160, and flows into the liquid holding chamber 111 from the cleaning liquid inlet 115 to clean the wall surface of the liquid holding chamber 111. For example, the third control valve 153 may be a solenoid valve, or may be other controllable valves. For example, the height of the cleaning liquid inlet 115 on the side wall may be higher than the height of the liquid inlet 113, so as to more comprehensively clean the wall surface contaminated by the dirty liquid. For example, when the space occupied by the dirty liquid recovered from the cleaning device 20 is smaller than the volume of the liquid holding chamber 111, the height at which the cleaning liquid inlet 115 is set on the side wall can also be higher than the liquid level after the liquid holding chamber 111 has recovered the dirty liquid in the cleaning device 20. The liquid level is determined based on the actual amount of dirty liquid generated by the cleaning device 20 and the shape and capacity of the liquid holding chamber 111.

[0043] In some embodiments, the side wall of the liquid receiving chamber 111 may be configured as a concave arc surface, and the cleaning liquid inlet 115 may be disposed on the side wall of the liquid receiving chamber 111. The cleaning liquid inlet 115 is configured to allow the cleaning liquid to flow down in a spiral shape along the circumference of the side wall. Figure 4 FIG. 1 shows a top view of the liquid containing chamber 111 of some embodiments of the present disclosure. Figure 4 As shown, the cross section of the liquid receiving chamber 111 is circular, and a cleaning liquid inlet 115 ( Figure 4 The cleaning liquid inlet 115 is tangent to the circumference of the concave arc side wall, so that the water column L flowing out of the cleaning liquid inlet 115 can flow along the side wall and flow down in a spiral shape due to gravity (such as Figure 4 ), so that less water is used to clean the wall of the liquid receiving chamber 111. For example, in order to clean the liquid receiving chamber 111 more comprehensively, the cleaning liquid inlet 115 can be set at a position close to the top of the side wall of the liquid receiving chamber 111.

[0044] For example, the cross-sectional shape of the liquid holding chamber 111 may be elliptical, circular, or other shapes that are approximately circular. The curvature of the side wall of the liquid holding chamber 111 may allow the cleaning liquid flowing from the cleaning liquid inlet 115 to flow down along the side wall in a spiral shape, and this embodiment does not impose any limitation on this. Figure 2 As shown, the top wall of the liquid holding chamber 111 can be a plane, and the side wall can be a concave curved surface, for example, a hemispherical surface or a surface approximately similar to a hemispherical surface. The cleaning liquid inlet 115 is arranged at a position close to the top of the upper part of the side wall to clean the liquid holding chamber 111 more comprehensively.

[0045] Of course, in other examples, the cross-section of the liquid holding chamber 111 may also be other shapes, and the cleaning liquid inlet 115 may also be set at other positions of the liquid holding chamber 111, as long as the cleaning of the liquid holding chamber 111 can be achieved, and this embodiment does not limit this. For example, a spray structure may also be set at the top of the liquid holding chamber 111, and the spray structure is provided with a circle of nozzles facing the side wall of the liquid holding chamber 111. These nozzles serve as the cleaning liquid inlet 115 to spray the cleaning liquid on the side wall of the liquid holding chamber 111, so that the cleaning liquid flows down along the side wall of the liquid holding chamber 111 under the action of gravity, thereby cleaning the liquid holding chamber 111.

[0046] Figure 5 FIG. 1 is a schematic diagram showing the structure of a maintenance base station 10 in some other embodiments of the present disclosure. Figure 5 As shown, in some embodiments, the cleaning liquid inlet 115 can be reused with the above-mentioned liquid inlet 113. At this time, the above-mentioned first control valve 151 and the above-mentioned third control valve 153 can be set in one piece, that is, a three-way control valve is used, the first channel A of the three-way control valve is connected to the liquid inlet 113 (that is, the cleaning liquid inlet 115), the second channel B is connected to the liquid inlet pipeline 130, and the third channel C is connected to the first liquid supply pipeline 160. In the dirty liquid recovery stage, the first channel A of the three-way control valve is controlled to be connected to the second channel B, and the first channel A and the third channel C are cut off, forming a dirty liquid recovery channel from the liquid inlet pipeline 130, the liquid inlet 113 to the liquid holding chamber 111, so as to realize the dirty liquid recovery. During the cleaning stage of the liquid containing chamber 111, the first channel A and the third channel C of the three-way control valve are controlled to be connected, and the first channel A and the second channel B are blocked, forming a cleaning liquid inflow channel from the first liquid supply pipeline 160 and the liquid inlet 113 (that is, the cleaning liquid inlet 115) to the liquid containing chamber 111, thereby cleaning the liquid containing chamber 111.

[0047] In some embodiments, in order to facilitate the supply of cleaning liquid, the maintenance base station 10 may further include: a liquid storage tank 12. The liquid storage tank 12 is configured to store cleaning liquid. The liquid storage tank 12 is connected to the cleaning liquid inlet 115 to provide cleaning liquid. For example, the liquid storage tank 12 may be connected to the first liquid supply pipeline 160. When the liquid holding chamber 111 needs to be cleaned, the third control valve 153 is opened, and the cleaning liquid stored in the liquid storage tank 12 can flow into the liquid holding chamber 111 through the first liquid supply pipeline 160 and the cleaning liquid inlet 115.

[0048] In some embodiments, in order to facilitate the supply of cleaning liquid to the docked cleaning device 20, the maintenance base station 10 may further include: a second liquid supply pipeline 13 and a fourth control valve 154. One end of the second liquid supply pipeline 13 is connected to the liquid storage tank 12, and is configured to provide cleaning liquid to the docked cleaning device 20. The fourth control valve 154 may be configured to control the on-off of the second liquid supply pipeline 13, for example, it may be connected to the second liquid supply pipeline 13. For example, the fourth control valve 154 may be a solenoid valve, or may be other controllable valves.

[0049] For example, Figure 2 As shown, the second liquid supply pipeline 13 may include a first branch, a second branch and a third branch, the fourth control valve 154 may be a three-way control valve, the first branch connects the first channel of the fourth control valve 154 and the liquid storage tank 12, one end of the second branch connects the second channel of the fourth control valve 154, and the other end is configured as a liquid replenishment channel for docking the cleaning device 20, one end of the third branch connects the third channel of the fourth control valve 154, and the other end is configured as a cleaning channel for docking the cleaning device 20. The liquid replenishment channel of the cleaning device 20 refers to a channel for replenishing the cleaning liquid for the liquid storage part of the cleaning device 20, and the cleaning liquid (for example, water) in the liquid storage tank 12 of the maintenance base station 10 can flow into the liquid replenishment channel of the docked cleaning device 20 through the first branch and the second branch, and enter the liquid storage part of the cleaning device 20, so as to be used for cleaning the target object, such as for cleaning the floor. The cleaning channel of the cleaning device 20 refers to a channel for providing cleaning liquid to the dirty liquid tank 22 of the cleaning device 20. The cleaning liquid (for example, water) in the liquid storage tank 12 of the maintenance base station 10 can flow into the cleaning channel of the connected cleaning device 20 through the first branch and the third branch, and be sprayed into the dirty liquid tank 22 of the cleaning device 20 to clean the dirty liquid tank 22.

[0050] In some embodiments, in order to have sufficient power to supply liquid to the cleaning device 20, the maintenance base station 10 may further include a water pump 14 connected to the second liquid supply pipeline 13. For example, a peristaltic pump may be used, and the peristaltic pump is connected to the pipeline between the fourth control valve 154 and the liquid storage tank 12. Figure 2 As shown, the peristaltic pump can be connected to the first branch of the second liquid supply line 13 .

[0051] Based on the maintenance base station 10 provided by some exemplary embodiments of the present disclosure, Figure 6 Schematic diagrams of the cleaning system 1 of other embodiments of the present disclosure are shown. Figure 6 As shown, when the cleaning device 20 is docked with the maintenance base station 10 , the liquid inlet 113 of the waste liquid transfer box 11 of the maintenance base station 10 is communicated with the sewage discharge channel of the cleaning device 20 .

[0052] like Figure 6 As shown, the cleaning device 20 may include: a device body 21 and a dirty liquid tank 22 disposed on the device body 21. The dirty liquid tank 22 includes: a dirty liquid holding chamber 220 and a sewage inlet 221, a sewage outlet 222 and a liquid spraying portion 223 connected to the dirty liquid holding chamber 220. The sewage inlet 221 is connected to the dirty liquid recovery channel of the device body 21, and the sewage outlet 222 is connected to the sewage discharge channel of the cleaning device 20. For example, in order to facilitate sewage discharge, the sewage outlet 222 can be disposed at the bottom of the dirty liquid tank 22. The dirty liquid such as sewage generated by the device body 21 in the process of cleaning the target object such as the ground enters the dirty liquid holding chamber 220 through the sewage recovery channel and the sewage inlet 221.

[0053] In some embodiments, the height of the liquid spraying portion 223 may be higher than the heights of the sewage inlet 221 and the sewage outlet 222 of the sewage tank 22. The liquid spraying portion 223 is configured to allow the cleaning liquid to flow from top to bottom along the side wall of the sewage receiving chamber 220 to the bottom of the sewage receiving chamber 220 to clean the wall surface of the sewage receiving chamber 220.

[0054] In some embodiments, the dirty liquid tank 22 may further include a cleaning pipeline 224, which is connected to the liquid spraying part 223 to transmit cleaning liquid to the liquid spraying part 223 from the outside. For example, after the cleaning device 20 is docked with the maintenance base station 10, the cleaning pipeline 224 may be connected to the second liquid supply pipeline 13 of the maintenance base station 10, such as being connected to the third branch of the second liquid supply pipeline 13, so as to provide cleaning liquid for the dirty liquid tank 22. The cleaning liquid (for example, water) in the liquid storage tank 12 of the maintenance base station 10 may flow into the cleaning pipeline 224 of the dirty liquid tank 22 through the first branch and the third branch, and then be sprayed into the dirty liquid holding chamber 220 through the liquid spraying part 223 to clean the wall surface of the dirty liquid holding chamber 220.

[0055] like Figure 6As shown, the cleaning pipeline 224 of the dirty liquid tank 22 can extend from the bottom of the dirty liquid tank 22 to a position close to the top, and communicate with the liquid spraying part 223. Of course, in other examples, the cleaning pipeline 224 can also be arranged in other ways, according to actual needs, and this embodiment does not limit this. In some embodiments, the side wall of the dirty liquid holding chamber 220 can be a concave arc surface, and the liquid spraying part 223 is arranged on the side wall of the dirty liquid holding chamber 220, and the liquid spraying part 223 is configured so that the cleaning liquid flows down in a spiral shape along the circumference of the side wall of the dirty liquid holding chamber 220. Compared with spraying the cleaning liquid from the bottom of the dirty liquid holding chamber 220, the cleaning liquid required for cleaning the dirty liquid holding chamber 220 can be effectively reduced, which is conducive to reducing resource costs. For example, in order to clean the dirty liquid holding chamber 220 more comprehensively, the liquid spraying part 223 can be arranged at a position close to the top of the side wall of the dirty liquid holding chamber 220.

[0056] For example, the liquid spraying part 223 sprays the cleaning liquid along the circumferential tangent direction of the side wall of the dirty liquid holding chamber 220. Due to the effect of gravity, the cleaning liquid flows in the circumferential direction around the side wall of the dirty liquid holding chamber 220, and the flow path deviates downward and flows down in a spiral shape. For example, the cleaning liquid can flow down along the side wall of the dirty liquid holding chamber 220 in a clockwise rotation, or it can also flow down along the side wall of the dirty liquid holding chamber 220 in a counterclockwise rotation, and this embodiment does not limit this.

[0057] For example, the liquid spraying part 223 may include one or more nozzles 2231. By providing multiple nozzles 2231, multiple streams of cleaning liquid may flow down along the side wall of the dirty liquid holding chamber 220 in a rotating manner, so that the stains on the wall can be cleaned more effectively, and more powerful cleaning can be achieved. For example, the liquid spraying part 223 may include at least three nozzles 2231, and these nozzles 2231 are distributed at intervals along the circumference of the side wall of the dirty liquid holding chamber 220, and each nozzle 2231 may be located at the same height or at different heights.

[0058] Figure 7 FIG. 2 shows a schematic diagram of the structure of the dirty liquid receiving chamber 220 in some embodiments of the present disclosure. Figure 7 As shown, the dirty liquid receiving chamber 220 may be cylindrical, with a side wall of an arc surface, and the liquid spraying portion 223 includes three nozzles 2231, which are evenly spaced along the circumference of the side wall, that is, the interval between adjacent nozzles 2231 is 120 degrees. Figure 7 The cleaning fluid is sprayed in the direction of the arrow in the figure. Three streams of cleaning fluid (such as Figure 7 L1, L2 and L3) shown in FIG. 2 rotate and flow down along the side wall of the dirty liquid receiving chamber 220. Of course, in addition to Figure 7In addition to the shape shown in FIG. 1 , in other examples, the dirty liquid holding chamber 220 may also be in other shapes, such as a spherical shape, a hemispherical shape, or a shape similar to a cylinder, so that the cleaning liquid can rotate and flow down along the side wall of the dirty liquid holding chamber 220. This embodiment does not limit this.

[0059] At this time, the cleaning pipeline 224 of the dirty liquid tank 22 can be arranged outside the dirty liquid receiving chamber 220, so as to communicate with the liquid spraying part 223 arranged on the side wall of the dirty liquid receiving chamber 220 to transmit the cleaning liquid thereto.

[0060] In some embodiments, the liquid spraying part 223 is also disposed at the top of the dirty liquid holding chamber 220. At this time, the liquid spraying part 223 may include a circle of nozzles 2231 facing the side wall of the dirty liquid holding chamber 220, so that the cleaning liquid is sprayed toward the side wall of the dirty liquid holding chamber 220 and flows down from top to bottom along the side wall of the dirty liquid holding chamber 220. In this way, the side wall of the dirty liquid holding chamber 220 where dirt may exist can be cleaned in a targeted manner with the help of the gravity of the cleaning liquid itself. Compared with spraying the cleaning liquid from the bottom of the dirty liquid holding chamber 220, the cleaning liquid required for cleaning the dirty liquid holding chamber 220 can be effectively reduced, which is conducive to reducing resource costs. At this time, the cross-sectional shape of the dirty liquid holding chamber 220 can be circular, elliptical, square, triangular or pentagonal, etc., which is set according to actual needs, and this embodiment does not limit this.

[0061] For example, the circle of nozzles 2231 included in the liquid spraying portion 223 may be a plurality of nozzles 2231 arranged at intervals and forming a circle. In this case, the number of nozzles 2231 may be set according to the cross-sectional shape and circumference of the side wall of the dirty liquid containing chamber 220. For another example, the circle of nozzles 2231 included in the liquid spraying portion 223 may also be an integrated annular nozzle 2231.

[0062] Figure 8 Schematic diagrams showing the structure of the dirty liquid containing chamber 220 in other embodiments of the present disclosure are shown. Figure 8 FIG. 2 is a longitudinal cross-sectional view of the dirty liquid receiving chamber 220. Figure 8As shown, the cleaning pipeline 224 of the dirty liquid tank 22 can be arranged inside the dirty liquid holding chamber 220, such as at the center of the dirty liquid holding chamber 220, extending from bottom to top, so as to be connected with the liquid spraying part 223 arranged at the top of the dirty liquid holding chamber 220, so as to transmit the cleaning liquid thereto. The liquid spraying part 223 also includes a liquid inlet 2232, which is connected with the cleaning pipeline 224. The cleaning liquid transmitted in the cleaning pipeline 224 enters the liquid spraying part 223 from the liquid inlet 2232, and is sprayed toward the side wall 2201 of the dirty liquid holding chamber 220 from a circle of nozzles 2231 arranged toward the side wall of the dirty liquid holding chamber 220, and flows down along the side wall 2201 under the action of gravity (for example, it can flow down in a nearly straight line), taking away the stains remaining on the side wall 2201. Of course, in other examples, the cleaning pipeline 224 may also be disposed outside the dirty liquid containing chamber 220 and communicated with the liquid spraying portion 223 located at the top of the dirty liquid containing chamber 220 from the outside, and this embodiment does not limit this.

[0063] It should be noted that the liquid spraying part 223 of the dirty liquid tank 22 is also suitable for cleaning the dirty liquid transfer tank 11. In some embodiments, the dirty liquid transfer tank 11 may also be provided with a liquid spraying structure similar to the liquid spraying part 223. The liquid spraying structure may refer to the embodiment of the liquid spraying part 223, so that the cleaning liquid flowing in from the cleaning liquid inlet 115 can flow from top to bottom along the side wall of the liquid receiving chamber 111 to the bottom of the liquid receiving chamber 111. For example, one or more liquid spraying structures similar to the liquid spraying structure 223 may be provided. Figure 7 The nozzle shown can make the cleaning liquid spray out along the circumferential tangent direction of the side wall of the liquid receiving chamber 111, and under the action of gravity, it flows down in a spiral shape along the side wall of the liquid receiving chamber 111, or a nozzle similar to Figure 8 A circle of nozzles is shown that can spray liquid toward the side wall of the liquid receiving chamber 111, so that multiple streams of cleaning liquid flow down along the side wall of the liquid receiving chamber 111, taking away the stains remaining on the side wall.

[0064] like Figure 6 As shown, in some embodiments, in order to facilitate cleaning of a target object such as a floor, the device body 21 may include a liquid storage portion 210 and a liquid replenishment channel 211 connected to the liquid storage portion 210. The liquid storage portion 210 is configured to store cleaning liquid for cleaning a target object such as a floor. For example, after the cleaning device 20 is docked with the maintenance base station 10, the second liquid supply pipeline 13 of the maintenance base station 10 is connected to the liquid replenishment channel 211, such as the second branch of the second liquid supply pipeline 13 is connected to the liquid replenishment channel 211, so as to replenish the cleaning liquid for the liquid storage portion 210.

[0065] It is understandable that, in addition to the above-mentioned liquid storage part 210 and the liquid replenishing channel 211, the device body 21 may also include other structures, which are determined according to the actual product. Taking the cleaning device 20 as a handheld floor scrubber as an example, the device body 21 of the handheld floor scrubber may also include a shell, a handle, and a roller brush, etc., and further, may also include a fan and a heating component, so that the cleaning device 20 has a drying function, which is not described in detail in this embodiment.

[0066] For ease of understanding, the following Figure 6 Taking the cleaning system 1 shown as an example, an exemplary working process of the maintenance base station 10 is described.

[0067] After the cleaning device 20 completes the cleaning work, it can return to the maintenance base station 10 and dock with the maintenance base station 10. At this time, the liquid inlet pipeline 130 of the waste liquid transfer box 11 of the maintenance base station 10 is docked with the sewage discharge channel of the cleaning device 20, the second branch of the second liquid supply pipeline 13 of the maintenance base station 10 is docked with the liquid replenishment channel of the cleaning device 20, and the third branch of the second liquid supply pipeline 13 of the maintenance base station 10 is docked with the cleaning pipeline 224 of the cleaning device 20.

[0068] The dirty liquid recovery process of the maintenance base station 10 may include: a vacuuming stage, a recovery stage, and a cleaning stage. The vacuuming stage is performed first, including: closing the first control valve 151, the second control valve 152, and the third control valve 153, turning on the vacuum pump 121, and vacuuming the liquid holding chamber 111 of the dirty liquid transfer box 11. After a negative pressure environment is formed, the vacuum pump 121 is turned off. Then, the recovery stage is entered, including: first opening the first control valve 151, and the dirty liquid in the equipment 20 to be cleaned is sucked into the liquid holding chamber 111 of the dirty liquid transfer box 11 by the suction force generated by the negative pressure, and then opening the second control valve 152 to discharge the dirty liquid in the liquid holding chamber 111, and closing the first control valve 151 and the second control valve 152. For ease of understanding, Figure 6 The short straight line with an arrow in the figure illustrates the entire path of the dirty liquid from the equipment body 21 of the cleaning equipment 20 into the dirty liquid tank 22, then recovered from the dirty liquid tank 22 to the dirty liquid transfer tank 11, and discharged from the dirty liquid transfer tank 11.

[0069] Then, the cleaning phase can be entered. The cleaning phase can be divided into two sub-phases: the dirty liquid tank 22 cleaning sub-phase and the dirty liquid transfer tank 11 cleaning sub-phase.

[0070] In the cleaning sub-stage of the dirty liquid tank 22, the fourth control valve 154 is opened so that the first channel of the fourth control valve 154 is connected to the third channel, the second liquid supply pipeline 13 is switched to the dirty liquid tank 22 side, the peristaltic pump is turned on, and the cleaning liquid in the liquid storage tank 12 is transferred to the cleaning pipeline 224 of the dirty liquid tank 22, and sprayed into the dirty liquid holding chamber 220 of the dirty liquid tank 22 through the liquid spraying part 223 to flush the dirty liquid holding chamber 220. After the flushing is completed, the peristaltic pump is turned off and the fourth control valve 154 is closed. Then, the above-mentioned vacuuming stage and recovery stage can be performed again to discharge the cleaning liquid in the dirty liquid holding chamber 220.

[0071] In the cleaning sub-stage of the dirty liquid transfer box 11, the second control valve 152 and the third control valve 153 are opened, and the cleaning liquid such as tap water in the liquid storage tank 12 of the maintenance base station 10 flows to the dirty liquid transfer box 11 through the first liquid supply pipeline 160 under the action of gravity, flows into the liquid receiving chamber 111 through the cleaning liquid inlet 115 of the dirty liquid transfer box 11, flows down in a spiral shape along the circumference of the side wall of the liquid receiving chamber 111, and is discharged to the sewer from the liquid discharge pipeline 140 after cleaning the liquid receiving chamber 111. Then the second control valve 152 and the third control valve 153 can be closed.

[0072] In addition, the maintenance base station 10 can also replenish cleaning liquid into the liquid storage part of the cleaning equipment 20. The operation process includes: opening the fourth control valve 154 so that the first channel of the fourth control valve 154 is connected to the second channel, switching the second liquid supply pipeline 13 to the liquid storage side, and then starting the peristaltic pump to replenish cleaning liquid into the liquid storage part through the liquid replenishment channel.

[0073] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0074] Although the exemplary embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the exemplary embodiments and all changes and modifications falling within the scope of the present disclosure.

[0075] In a first aspect of the present disclosure, a maintenance base station is provided for maintaining cleaning equipment, the maintenance base station comprising: a dirty liquid transfer box, the dirty liquid transfer box comprising: a box body, comprising: a liquid holding chamber and an air suction hole and a liquid inlet connected to the liquid holding chamber; a vacuum structure connected to the air suction hole, configured to vacuum the liquid holding chamber so that a negative pressure environment is formed in the liquid holding chamber, and the dirty liquid in the connected cleaning equipment is recovered from the liquid inlet into the liquid holding chamber.

[0076] In some embodiments, the waste liquid transfer box further includes: a liquid inlet pipeline and a first control valve, the liquid inlet pipeline is connected to the liquid inlet, and the first control valve is configured to control the on-off of the liquid inlet pipeline.

[0077] In some embodiments, the box body further includes: a drain port connected to the liquid holding chamber, the drain port is arranged at the bottom of the box body, and the waste liquid transfer box further includes: a drain pipeline connected to the drain port.

[0078] In some embodiments, the liquid discharge port and the liquid inlet port are independent of each other, and the waste liquid transfer box also includes a second control valve, which is configured to control the on-off of the liquid discharge pipeline; or, the liquid discharge port reuses the liquid inlet port, and the first control valve includes: a first channel, a second channel and a third channel, the first channel is connected to the liquid inlet port, the second channel is connected to the liquid inlet pipeline, and the third channel is connected to the liquid discharge pipeline. When the negative pressure environment is formed in the liquid holding chamber, the first channel is connected to the second channel, and when the waste liquid transfer box completes the waste liquid recovery, the first channel is connected to the third channel.

[0079] In some embodiments, the vacuum pumping structure includes: a vacuum pump, an exhaust pipeline and an exhaust pipeline, the air inlet channel of the vacuum pump is connected to the exhaust hole through the exhaust pipeline, and the exhaust channel of the vacuum pump is connected to the exhaust pipeline.

[0080] In some embodiments, the body of the dirty liquid transfer box further includes: a cleaning liquid inlet communicated with the liquid containing chamber, so that the cleaning liquid flows from the cleaning liquid inlet into the liquid containing chamber to clean the wall surface of the liquid containing chamber.

[0081] In some embodiments, the dirty liquid transfer box also includes: a first liquid supply pipeline and a third control valve, the first liquid supply pipeline is connected to the cleaning liquid inlet, and the third control valve is configured to control the on-off of the first liquid supply pipeline; the side wall inside the liquid holding chamber is a concave arc surface, the cleaning liquid inlet is arranged on the side wall of the liquid holding chamber, and the cleaning liquid inlet is configured to allow the cleaning liquid to flow down in a spiral shape along the circumference of the side wall.

[0082] In some embodiments, the cross-sectional shape of the liquid holding chamber is elliptical or circular.

[0083] In some embodiments, the maintenance base station further includes a liquid storage tank configured to store cleaning liquid, and the liquid storage tank is connected to the cleaning liquid inlet to provide the cleaning liquid.

[0084] In some embodiments, the maintenance base station further includes a second liquid supply pipeline and a fourth control valve, one end of the second liquid supply pipeline is connected to the liquid storage tank and is configured to provide cleaning liquid to the docked cleaning equipment, and the fourth control valve is configured to control the on and off of the second liquid supply pipeline.

[0085] In the second aspect of the present disclosure, a cleaning system is provided, comprising: a cleaning device and the maintenance base station provided in the first aspect above; when the cleaning device is docked with the maintenance base station, the liquid inlet of the dirty liquid transfer box of the maintenance base station is connected to the sewage discharge channel of the cleaning device.

[0086] In some embodiments, the cleaning device includes: an equipment body and a dirty liquid tank arranged on the equipment body, the dirty liquid tank includes: a dirty liquid holding chamber and a sewage inlet, a sewage outlet and a liquid spraying part connected to the dirty liquid holding chamber, the sewage inlet is connected to a sewage recovery channel of the equipment body, and the sewage outlet is connected to the sewage outlet channel; the height of the liquid spraying part is higher than the height of the sewage inlet and the sewage outlet, and the liquid spraying part is configured to make the cleaning liquid flow from top to bottom along the side wall of the dirty liquid holding chamber to the bottom of the dirty liquid holding chamber to clean the wall surface of the dirty liquid holding chamber.

[0087] In some embodiments, the side wall of the dirty liquid holding chamber is a concave arc surface, the liquid spraying part is arranged on the side wall of the dirty liquid holding chamber, and the liquid spraying part is configured to make the cleaning liquid flow down in a spiral shape along the circumference of the side wall of the dirty liquid holding chamber.

[0088] In some embodiments, the liquid spraying portion includes at least three nozzles, and the at least three nozzles are distributed at intervals along the circumference of the side wall of the dirty liquid containing chamber.

[0089] In some embodiments, the liquid spraying portion is disposed at the top of the dirty liquid holding chamber, and the liquid spraying portion includes a circle of nozzles facing the side wall of the dirty liquid holding chamber, so that the cleaning liquid is sprayed toward the side wall of the dirty liquid holding chamber and flows down along the side wall of the dirty liquid holding chamber from top to bottom.

Claims

1. A maintenance base station, characterized in that: Used for maintaining cleaning equipment, the maintenance base station includes: a waste liquid transfer box, the waste liquid transfer box includes: The box body comprises: a liquid containing chamber and an air extraction hole and a liquid inlet communicated with the liquid containing chamber; The vacuum structure is connected to the vacuum hole and is configured to vacuum the liquid holding chamber to form a negative pressure environment in the liquid holding chamber, and to recover the dirty liquid in the connected cleaning equipment into the liquid holding chamber through the liquid inlet.

2. The maintenance base station according to claim 1, characterized in that: The waste liquid transfer box further includes: a liquid inlet pipeline and a first control valve, wherein the liquid inlet pipeline is communicated with the liquid inlet port, and the first control valve is configured to control the on-off of the liquid inlet pipeline.

3. The maintenance base station according to claim 2, characterized in that: The box body further includes: a liquid discharge port communicated with the liquid containing cavity, and the liquid discharge port is arranged at the bottom of the box body. The waste liquid transfer box further includes: a liquid discharge pipeline, and the liquid discharge pipeline is communicated with the liquid discharge port.

4. The maintenance base station according to claim 3, characterized in that: The liquid discharge port and the liquid inlet are independent of each other, and the waste liquid transfer box further comprises a second control valve, which is configured to control the on-off of the liquid discharge pipeline; Alternatively, the liquid discharge port reuses the liquid inlet, and the first control valve includes: a first channel, a second channel and a third channel, the first channel is connected to the liquid inlet, the second channel is connected to the liquid inlet pipeline, and the third channel is connected to the liquid discharge pipeline. When the negative pressure environment is formed in the liquid holding chamber, the first channel is connected to the second channel, and when the dirty liquid transfer box completes the recovery of the dirty liquid, the first channel is connected to the third channel.

5. The maintenance base station according to claim 1, characterized in that: The vacuum pumping structure comprises: a vacuum pump, an air extraction pipeline and an exhaust pipeline. The air inlet channel of the vacuum pump is connected to the air extraction hole through the air extraction pipeline, and the exhaust channel of the vacuum pump is connected to the exhaust pipeline.

6. The maintenance base station according to claim 1, characterized in that: The housing further comprises: a cleaning liquid inlet communicated with the liquid containing chamber, so that the cleaning liquid flows from the cleaning liquid inlet into the liquid containing chamber to clean the wall surface of the liquid containing chamber.

7. The maintenance base station according to claim 6, characterized in that: The dirty liquid transfer box further includes: a first liquid supply pipeline and a third control valve, wherein the first liquid supply pipeline is in communication with the cleaning liquid inlet, and the third control valve is configured to control the on-off of the first liquid supply pipeline; The side wall in the liquid containing chamber is a concave arc surface, the cleaning liquid inlet is arranged on the side wall of the liquid containing chamber, and the cleaning liquid inlet is configured so that the cleaning liquid flows down in a spiral shape along the circumference of the side wall.

8. The maintenance base station according to claim 7, characterized in that: The cross-sectional shape of the liquid containing chamber is oval or circular.

9. The maintenance base station according to claim 6, characterized in that: The invention also includes a liquid storage tank configured to store cleaning liquid, wherein the liquid storage tank is in communication with the cleaning liquid inlet to provide the cleaning liquid.

10. The maintenance base station according to claim 9, characterized in that: It also includes a second liquid supply pipeline and a fourth control valve. One end of the second liquid supply pipeline is connected to the liquid storage tank and is configured to provide cleaning liquid to the docked cleaning equipment. The fourth control valve is configured to control the on-off of the second liquid supply pipeline.

11. A cleaning system, characterized in that: include: A cleaning device and a maintenance base station as described in any one of claims 1 to 10; When the cleaning device is docked with the maintenance base station, the liquid inlet of the dirty liquid transfer box of the maintenance base station is communicated with the sewage discharge channel of the cleaning device.

12. The cleaning system according to claim 11, characterized in that The cleaning device comprises: a device body and a dirty liquid tank arranged on the device body, the dirty liquid tank comprises: a dirty liquid containing chamber and a sewage inlet, a sewage outlet and a liquid spraying part connected with the dirty liquid containing chamber, the sewage inlet is connected with the dirty liquid recovery channel of the device body, and the sewage outlet is connected with the sewage outlet channel; The height of the liquid spraying part is higher than the heights of the sewage inlet and the sewage outlet. The liquid spraying part is configured to make the cleaning liquid flow from top to bottom along the side wall of the dirty liquid containing chamber to the bottom of the dirty liquid containing chamber to clean the wall surface of the dirty liquid containing chamber.

13. The cleaning system according to claim 12, characterized in that The side wall of the dirty liquid receiving chamber is a concave arc surface, the liquid spraying part is arranged on the side wall of the dirty liquid receiving chamber, and the liquid spraying part is configured to make the cleaning liquid flow down in a spiral shape along the circumference of the side wall of the dirty liquid receiving chamber.

14. The cleaning system according to claim 13, characterized in that The liquid spraying portion includes at least three nozzles, and the at least three nozzles are distributed at intervals along the circumference of the side wall of the dirty liquid containing chamber.

15. The cleaning system according to claim 12, characterized in that The liquid spraying part is arranged at the top of the dirty liquid containing chamber, and the liquid spraying part includes a circle of nozzles facing the side wall of the dirty liquid containing chamber, so that the cleaning liquid is sprayed toward the side wall of the dirty liquid containing chamber and flows down along the side wall of the dirty liquid containing chamber from top to bottom.

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