Cleaning device

Abstract

The utility model discloses cleaning equipment. The cleaning equipment comprises an equipment main body; the driving assembly is connected to the equipment body and used for driving the equipment body to advance on the to-be-cleaned surface; the first clear water tank or the first sewage tank is installed on the equipment body, the first clear water tank is provided with a first containing cavity, an air vent, a water inlet and a water outlet, the air vent, the water inlet and the water outlet are communicated with the first containing cavity, the first sewage tank is installed on the equipment body, and the first sewage tank is provided with a second containing cavity, an air vent, a liquid inlet and a liquid outlet, and the air vent, the liquid inlet and the liquid outlet are communicated with the second containing cavity; the air pump is provided with an air outlet and an air inlet; and the reversing mechanism is used for enabling the ventilation opening to be switched between communicating with the air outlet and communicating with the air inlet, or the reversing mechanism is used for enabling the ventilation opening to be switched between communicating with the air outlet and communicating with the air inlet. According to the cleaning equipment, water can be fed into and discharged from the water tank through the cleaning equipment.

Description

[0001] This case is a divisional application. The original application had the application number 202321686448.4, the application date was June 29, 2023, and the invention title was "Cleaning Equipment and Cleaning System". Technical Field

[0002] This application relates to the field of smart home appliance technology, and more specifically to a cleaning device. Background Technology

[0003] Currently, the electric components such as water pumps and air pumps in cleaning devices like robotic mopping and sweeping robots typically only enable one function of the water tank: draining or pumping water. For example, they might drain the clean water tank to wet cleaning components like rollers and mops, or pump out wastewater generated during cleaning. When it's necessary to refill the clean water tank or remove wastewater from the wastewater tank, it usually requires electric components like water pumps and air pumps mounted on the base station, which obviously increases costs.

[0004] Therefore, improvements are needed to at least partially address the aforementioned problems. Utility Model Content

[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] The cleaning equipment and cleaning system provided in the embodiments of this application can generate positive and negative pressure in the first receiving cavity of the first clean water tank through a reversing mechanism and an air pump to realize the inlet and outlet of the first clean water tank, or generate positive and negative pressure in the first receiving cavity of the first sewage tank through a reversing mechanism and an air pump to realize the inlet and outlet of the first sewage tank, without the need to install electric devices on the base station that cooperates with the cleaning equipment to replenish or pump water from the tank.

[0007] In a first aspect, embodiments of this application provide a cleaning device, comprising: a device body; a drive assembly connected to the device body, the drive assembly including a drive motor and a traveling wheel, the drive motor being drive-connected to the traveling wheel for driving the traveling wheel to rotate, thereby driving the device body to move on the surface to be cleaned; a first clean water tank or a first wastewater tank, the first clean water tank being installed on the device body, the first clean water tank having a first receiving cavity and a vent, a water inlet and a water outlet communicating with the first receiving cavity, the first wastewater tank being installed on the device body, the first wastewater tank having a second receiving cavity and a vent, a liquid inlet and a liquid outlet communicating with the second receiving cavity; an air pump, the air pump having an air outlet and an air inlet; a reversing mechanism, the reversing mechanism being used to switch the vent between communicating with the air outlet and communicating with the air inlet, or, the reversing mechanism... The air pump is used to switch the vent between being connected to the air outlet and the air inlet; wherein, when the vent is connected to the air outlet, the air pump can generate positive pressure in the first receiving cavity to allow the liquid inside the first receiving cavity to leave the first receiving cavity through the water outlet; when the vent is connected to the air inlet, the air pump can generate negative pressure in the first receiving cavity to allow liquid outside the first receiving cavity to enter the first receiving cavity through the water inlet; when the vent is connected to the air outlet, the air pump can generate positive pressure in the second receiving cavity to allow the liquid inside the second receiving cavity to leave the second receiving cavity through the liquid outlet; when the vent is connected to the air inlet, the air pump can generate negative pressure in the second receiving cavity to allow liquid outside the second receiving cavity to enter the second receiving cavity through the liquid inlet.

[0008] For example, the reversing mechanism includes an actuation component and a connecting pipe; the actuation component is used to drive the connecting pipe to move so that the connecting pipe connects the vent and the inlet or connects the vent and the outlet; or, the actuation component is used to drive the connecting pipe to move so that the connecting pipe connects the vent and the inlet or connects the vent and the outlet.

[0009] Exemplarily, the vent includes a first vent and a second vent, and the air outlet includes a first air outlet and a second air outlet. The actuation component is used to drive the connecting pipe to move so that the connecting pipe switches between a first position and a second position. When the connecting pipe is in the first position, the connecting pipe connects the first vent and the air outlet, and the air pump can supply air to the first receiving cavity to generate positive pressure in the first receiving cavity. When the connecting pipe is in the second position, the connecting pipe connects the second vent and the air inlet, and the air pump can extract gas from the first receiving cavity to generate negative pressure in the first receiving cavity. Alternatively, when the connecting pipe is in the first position, the connecting pipe connects the first air outlet and the air outlet, and the air pump can supply air to the second receiving cavity to generate positive pressure in the second receiving cavity. When the connecting pipe is in the second position, the connecting pipe connects the second air outlet and the air inlet, and the air pump can extract gas from the second receiving cavity to generate negative pressure in the second receiving cavity.

[0010] For example, a first leak-proof valve is provided at the first vent, and a second leak-proof valve is provided at the second vent. The first leak-proof valve is configured to open the first vent when the connecting pipe is in the first position and close the first vent when the connecting pipe is in the second position. The second leak-proof valve is configured to close the second vent when the connecting pipe is in the first position and open the second vent when the connecting pipe is in the second position. Alternatively, a third leak-proof valve is provided at the first vent, and a fourth leak-proof valve is provided at the second vent. The third leak-proof valve is configured to open the first vent when the connecting pipe is in the first position and close the first vent when the connecting pipe is in the second position. The fourth leak-proof valve is configured to close the second vent when the connecting pipe is in the first position and open the second vent when the connecting pipe is in the second position.

[0011] For example, the connecting pipe includes a first pair of connecting pipes and a second pair of connecting pipes; when the connecting pipe is in the first position, the two ends of the first pair of connecting pipes are respectively connected to the first vent and the air outlet, and the second pair of connecting pipes are disconnected from the second vent and the air inlet; when the connecting pipe is in the second position, the first pair of connecting pipes are disconnected from the first vent and the air outlet, and the two ends of the second pair of connecting pipes are respectively connected to the second vent and the air inlet; or, when the connecting pipe is in the first position, the two ends of the first pair of connecting pipes are respectively connected to the first vent and the air inlet, and the second pair of connecting pipes are disconnected from the second vent and the air outlet; when the connecting pipe is in the second position, the first pair of connecting pipes are disconnected from the first vent and the air inlet, and the two ends of the second pair of connecting pipes are respectively connected to the second vent and the air outlet.

[0012] Secondly, embodiments of this application provide a cleaning device, comprising: a device body; a drive assembly connected to the device body, the drive assembly including a drive motor and a traveling wheel, the drive motor being velocally connected to the traveling wheel for driving the traveling wheel to rotate, thereby driving the device body to move on the surface to be cleaned; a first clean water tank installed on the device body, the first clean water tank having a first receiving cavity and a vent, a water inlet, and a water outlet communicating with the first receiving cavity; a first wastewater tank installed on the device body, the first wastewater tank having a second receiving cavity and a vent, a liquid inlet, and a liquid outlet communicating with the second receiving cavity; a first air pump having a first air outlet and a first air inlet; a second air pump having a second air outlet and a second air inlet; and a reversing mechanism for switching the vent between communicating with the first air outlet and communicating with the first air inlet, and the reversing mechanism for switching the vent between communicating with the second air outlet and communicating with the second air inlet. The mechanism is also used to connect the vent to the first air inlet while the vent is connected to the second air outlet, and the reversing mechanism is also used to connect the vent to the first air outlet while the vent is connected to the second air inlet; wherein, when the vent is connected to the first air outlet, the first air pump can generate positive pressure in the first receiving cavity to allow the liquid inside the first receiving cavity to leave the first receiving cavity through the water outlet; when the vent is connected to the first air inlet, the second air pump can generate negative pressure in the first receiving cavity to allow the liquid outside the first receiving cavity to enter the first receiving cavity through the water inlet; when the vent is connected to the second air outlet, the second air pump can generate positive pressure in the second receiving cavity to allow the liquid inside the second receiving cavity to leave the second receiving cavity through the liquid outlet; when the vent is connected to the second air inlet, the second air pump can generate negative pressure in the second receiving cavity to allow the liquid outside the second receiving cavity to enter the second receiving cavity through the liquid inlet.

[0013] For example, the reversing mechanism includes an actuation component and a connecting pipe. The actuation component is used to drive the connecting pipe to move so that the connecting pipe connects the vent and the first air inlet and connects the vent and the second air outlet, or connects the vent and the first air outlet and connects the vent and the second air inlet.

[0014] Exemplarily, the vent includes a first vent and a second vent; the air outlet includes a first air outlet and a second air outlet; the actuation component is used to drive the connecting pipe to move so that the connecting pipe switches between a first position and a second position; when the connecting pipe is in the first position, the connecting pipe connects the first vent and the first air outlet, and the first air pump can supply air to the first receiving cavity to generate positive pressure in the first receiving cavity; the connecting pipe also connects the first air outlet and the second air inlet, and the second air pump can extract gas from the second receiving cavity to generate negative pressure in the second receiving cavity; when the connecting pipe is in the second position, the connecting pipe connects the second vent and the first air inlet, and the first air pump can extract gas from the first receiving cavity to generate negative pressure in the first receiving cavity; the connecting pipe also connects the second air outlet and the second air outlet, and the second air pump can supply air to the second receiving cavity to generate positive pressure in the second receiving cavity.

[0015] For example, a first leak-proof valve is provided at the first vent, configured to open the first vent when the connecting pipe is in the first position and close the first vent when the connecting pipe is in the second position; a second leak-proof valve is provided at the second vent, configured to close the second vent when the connecting pipe is in the first position and open the second vent when the connecting pipe is in the second position; a third leak-proof valve is provided at the first vent, configured to open the first vent when the connecting pipe is in the first position and close the first vent when the connecting pipe is in the second position; a fourth leak-proof valve is provided at the second vent, configured to close the second vent when the connecting pipe is in the first position and open the second vent when the connecting pipe is in the second position.

[0016] For example, the connecting pipe includes a first pair of connecting pipes, a second pair of connecting pipes, a third pair of connecting pipes, and a fourth pair of connecting pipes; when the connecting pipe is in the first position, the two ends of the first pair of connecting pipes are respectively connected to the first vent and the first air outlet, and the second pair of connecting pipes is disconnected from the second vent and the first air inlet; the two ends of the third pair of connecting pipes are respectively connected to the first vent and the second air inlet, and the fourth pair of connecting pipes is disconnected from the second vent and the second air outlet; when the connecting pipe is in the second position, the first pair of connecting pipes is disconnected from the first vent and the first air outlet, and the two ends of the second pair of connecting pipes are respectively connected to the second vent and the first air inlet; the third pair of connecting pipes is disconnected from the first vent and the second air inlet, and the two ends of the fourth pair of connecting pipes are respectively connected to the second vent and the second air outlet.

[0017] Thirdly, embodiments of this application provide a cleaning system comprising: the cleaning equipment as described above; a base station, the base station including a base station body, the base station further including a second clean water tank and a second wastewater tank, the second clean water tank being detachably connected to the base station body, and the second wastewater tank being detachably connected to the base station body; when the cleaning equipment is docked with the base station, the second clean water tank is connected to the water inlet, the reversing mechanism connects the vent to the air inlet, and the air pump can generate negative pressure in the first accommodating cavity to allow liquid in the second clean water tank to enter the first accommodating cavity through the water inlet; or, when the cleaning equipment is docked with the base station, the second wastewater tank is connected to the liquid outlet, the reversing mechanism connects the vent to the air outlet, and the air pump can generate positive pressure in the second accommodating cavity to allow liquid in the second accommodating cavity to enter the second wastewater tank through the liquid outlet.

[0018] Fourthly, embodiments of this application provide a cleaning system comprising: the cleaning equipment as described above; a base station, the base station including a base station body, the base station further including a second clean water tank and a second wastewater tank, the second clean water tank being detachably connected to the base station body, and the second wastewater tank being detachably connected to the base station body; when the cleaning equipment is docked with the base station, the second clean water tank is connected to the water inlet, the reversing mechanism connects the vent to the first air inlet, and the first air pump can generate negative pressure in the first accommodating cavity to allow liquid in the second clean water tank to enter the first accommodating cavity through the water inlet; when the cleaning equipment is docked with the base station, the second wastewater tank is connected to the liquid outlet, the reversing mechanism connects the vent to the second air outlet, and the second air pump can generate positive pressure in the second accommodating cavity to allow liquid in the second accommodating cavity to enter the second wastewater tank through the liquid outlet.

[0019] Fifthly, embodiments of this application provide a cleaning system comprising: a cleaning device as described above, wherein the cleaning device includes a first wastewater tank; a base station, the base station including a base station body and a drain pipe disposed on the base station body, the drain pipe being used to connect to an external drainage unit; when the cleaning device is connected to the base station, the liquid outlet is used to connect to the external drainage unit through the drain pipe, and the second receiving cavity is used to generate positive pressure so that liquid in the second receiving cavity enters the external drainage unit through the liquid outlet and the drain pipe.

[0020] Sixthly, embodiments of this application provide a cleaning system comprising: a cleaning device as described above, wherein the cleaning device includes a first clean water tank; a base station, the base station including a base station body and a water inlet pipe disposed on the base station body, the water inlet pipe being used to communicate with an external water supply unit; when the cleaning device is connected to the base station, the water inlet is used to communicate with the external water supply unit through the water inlet pipe, and the first receiving cavity is used to generate negative pressure so that liquid from the external water supply unit enters the first receiving cavity through the water inlet pipe and the water inlet.

[0021] According to the cleaning equipment and cleaning system of this application, the connection between the air inlet and outlet of the air pump and the air vent of the first clean water tank can be changed by the reversing mechanism, or the connection between the air inlet and outlet of the air pump and the air vent of the first sewage tank can be changed by the reversing mechanism. This can generate positive and negative pressure in the containing cavity of the first clean water tank or the first sewage tank to realize water inlet and drainage. There is no need to install electric devices on the base station that cooperates with the cleaning equipment to replenish or pump water from the first clean water tank or the first sewage tank, thereby effectively reducing the cost of the base station that cooperates with the cleaning equipment. Attached Figure Description

[0022] The following drawings, which are incorporated herein by reference and are used to understand this application, illustrate embodiments of the invention and their descriptions, thereby explaining the apparatus and principles of the invention. In the drawings,

[0023] Figure 1 This is a schematic diagram of the structure of a cleaning device according to an embodiment of this application;

[0024] Figure 2 for Figure 1 A schematic diagram of the positive and negative pressure components in the cleaning equipment;

[0025] Figure 3 for Figure 2 A schematic diagram of the base structure;

[0026] Figure 4 for Figure 2 A schematic diagram of the connectors and connecting pipes in the diagram;

[0027] Figure 5 for Figure 2 A cross-sectional view of the first connecting pipe, second connecting pipe, third connecting pipe and fourth connecting pipe in the first position;

[0028] Figure 6 for Figure 2 A cross-sectional view of the positive and negative pressure assembly when the first connecting pipe, the second connecting pipe, the third connecting pipe, and the fourth connecting pipe are in the second position;

[0029] Figure 7 for Figure 1 The diagram shows the structure and fluid flow direction of the cleaning equipment when the first connecting pipe, second connecting pipe, third connecting pipe and fourth connecting pipe are in the first position. The arrows in the diagram indicate the fluid flow direction.

[0030] Figure 8 for Figure 7 A cross-sectional view of the first clean water tank of the cleaning equipment in the diagram, with arrows indicating the airflow direction;

[0031] Figure 9 for Figure 7 A cross-sectional view of the first wastewater tank of the cleaning equipment in the diagram, with arrows indicating the airflow direction;

[0032] Figure 10 for Figure 1 The diagram shows the structure and fluid flow direction of the cleaning equipment when the first connecting pipe, second connecting pipe, third connecting pipe and fourth connecting pipe are in the second position. The arrows in the diagram indicate the fluid flow direction.

[0033] Figure 11 for Figure 10 A cross-sectional view of the first clean water tank of the cleaning equipment in the diagram, with arrows indicating the airflow direction;

[0034] Figure 12 for Figure 10 A cross-sectional view of the first wastewater tank of the cleaning equipment in the diagram, with arrows indicating the airflow direction;

[0035] Figure 13 This is a schematic diagram of the structure of a cleaning system according to an embodiment of this application;

[0036] Figure 14 for Figure 12 A schematic diagram of the structure of the second clean water tank in the cleaning system;

[0037] Figure 15 for Figure 12 A cross-sectional view of the cleaning system replenishing clean water to the cleaning equipment; the arrows in the diagram indicate the direction of liquid flow.

[0038] Figure 16 for Figure 12 A cross-sectional view of the cleaning system as it discharges wastewater from the cleaning equipment; the arrows in the diagram indicate the direction of liquid flow.

[0039] Figure 17 for Figure 12 A cross-sectional view of the cleaning system during automatic water supply.

[0040] Figure 18 for Figure 12 A cross-sectional view of the cleaning system during automatic water drainage. Detailed Implementation

[0041] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0042] It should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this application to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated. The same reference numerals denote the same elements throughout.

[0043] It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or parts, these elements, components, areas, layers, and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or part from another element, component, area, layer, or part. Therefore, without departing from the teachings of this application, the first element, component, area, layer, or part discussed below may be referred to as the second element, component, area, layer, or part.

[0044] Embodiments of the utility model are described herein with reference to cross-sectional views that serve as schematic diagrams of preferred embodiments (and intermediate structures) of this application. Thus, variations in the shown shape can be anticipated due to, for example, manufacturing techniques and / or tolerances. Therefore, embodiments of this application should not be limited to the specific shapes shown herein, but include shape deviations due to, for example, manufacturing processes. Consequently, the figures are substantially schematic, and their shapes are not intended to show the actual shape of the device and are not intended to limit the scope of this application.

[0045] See attached document Figure 1-12The cleaning device 100 according to an embodiment of the present application will be described by way of example. The cleaning device 100 of the present application embodiment can be a mopping robot, a sweeping and mopping robot, etc., and includes a device body 110, a drive component, a first clean water tank 120, a first wastewater tank 130 and a positive and negative pressure component 140.

[0046] The main body 110 is a shell structure 211, with an internal accommodating space. Other components or structures in the cleaning equipment 100 are directly or indirectly connected to the main body 110. The main body 110 may be equipped with a cleaning component for cleaning surfaces to be cleaned. This cleaning component may include a roller or a mop, and it cleans the surface upon contact with it. The main body 110 may also be equipped with a wastewater collection component for collecting wastewater generated during the cleaning process. This wastewater collection component can come into contact with the cleaning component to scrape off and collect the wastewater from it.

[0047] A drive assembly is connected to the device body 110 and is used to drive the device body 110 to move on the surface to be cleaned. In this embodiment, the drive assembly may include a drive motor 142, traveling wheels, and casters. The casters are rotatably connected to the device body 110 and located at the front of the device body 110 facing the surface to be cleaned (the portion facing the forward direction of the cleaning device 100). There may be two traveling wheels, rotatably connected to the device body 110 and located at the middle or rear of the device body 110 facing the surface to be cleaned. The traveling wheels and casters may be arranged in an isosceles triangle on the side of the device body 110 facing the surface to be cleaned. The drive motor 142 is disposed inside the device body 110 and is drive-connected to the traveling wheels to drive the traveling wheels to rotate, thereby driving the device body 110 to move on the surface to be cleaned. In some embodiments, the drive assembly may include a drive motor 142 and a track wheel. The track wheel is rotatably connected to the device body 110 and located on the side of the device body 110 facing the surface to be cleaned. The drive motor 142 is drive-connected to the track wheel and is used to drive the track wheel to rotate, thereby driving the device body 110 to move on the surface to be cleaned.

[0048] The first clean water tank 120 and the first wastewater tank 130 are fixedly or detachably installed on the main body 110. The first clean water tank 120 has a first receiving cavity 121 and an inlet 124 and an outlet 125 communicating with the first receiving cavity 121. The first receiving cavity 121 is used to hold clean water, and the first clean water tank 120 can deliver clean water to cleaning components (such as rollers, mops, etc.) through the outlet 125 to moisten the cleaning components and improve the cleaning effect. The first receiving cavity 121 is connected to the outside through the inlet 124, and external devices such as base stations can supply clean water into the first receiving cavity 121 through the inlet 124. In this embodiment, both the inlet 124 and the outlet 125 include a connecting pipe, one end of which is located at the bottom of the first receiving cavity 121, and the other end is located inside the first receiving cavity 121, through which the first receiving cavity 121 is connected to the outside. The first wastewater tank 130 has a second receiving cavity 131 and an inlet 134 and an outlet 135 communicating with the second receiving cavity 131. The second receiving cavity 131 is used to receive wastewater. The second receiving cavity 131 is connected to a wastewater collection assembly through the inlet 134. Wastewater from the wastewater collection assembly can enter the second receiving cavity 131 through the inlet 134 and be stored in the second receiving cavity 131. The second receiving cavity 131 is connected to the outside through the outlet 135. Wastewater in the second receiving cavity 131 can be discharged from the second receiving cavity 131 through the outlet 135. In this embodiment, both the inlet 134 and the outlet 135 include a connecting pipe. One end of the connecting pipe is located inside the second receiving cavity 131, and the other end is located outside the second receiving cavity 131. The second receiving cavity 131 is connected to the outside through this connecting pipe.

[0049] The first clean water tank 120 also has a vent that communicates with the first receiving cavity 121. The positive and negative pressure assembly 140 can communicate with the first receiving cavity 121 through the vent to supply or evacuate air from the first receiving cavity 121, so that the first receiving cavity 121 is in a positive pressure state or a negative pressure state. When the first receiving cavity 121 is in a positive pressure state, the clean water in the first receiving cavity 121 can leave the first receiving cavity 121 through the water outlet 125 and be supplied to the cleaning assembly (e.g., a roller or a mop). When the first receiving cavity 121 is in a negative pressure state, as long as the water inlet 124 is connected to the device that supplies clean water to the first clean water tank 120 (e.g., the clean water tank of a base station or a container containing clean water), the clean water outside the first receiving cavity 121 can enter the first receiving cavity 121 through the water inlet 124, thereby replenishing the first clean water tank 120. The first sewage tank 130 also has a vent that communicates with the second receiving cavity 131. The positive and negative pressure assembly 140 can communicate with the second receiving cavity 131 through the vent to supply or evacuate air from the second receiving cavity 131, so that the second receiving cavity 131 is in a positive or negative pressure state. When the second receiving cavity 131 is in a negative pressure state, sewage from the sewage collection assembly can enter the second receiving cavity 131 through the inlet 134; when the second receiving cavity 131 is in a positive pressure state, the sewage in the second receiving cavity 131 can be discharged from the second receiving cavity 131 through the outlet 135. If the outlet 135 is connected to an external sewage receiving device (such as a sewage tank on a base station or other containers used to receive sewage) or a floor drain at this time, the sewage in the second receiving cavity 131 can be discharged into the external sewage receiving device or floor drain, thereby realizing the drainage of the first sewage tank 130. Therefore, when the cleaning equipment 100 cleans the surface to be cleaned, the positive and negative pressure components 140 can put the first receiving cavity 121 under positive pressure and the second receiving cavity 131 under negative pressure, so as to supply clean water in the first receiving cavity 121 to the cleaning components and absorb the wastewater generated during the cleaning process into the second receiving cavity 131. When the cleaning equipment 100 returns to the base station, the positive and negative pressure components 140 can put the first receiving cavity 121 under negative pressure and the second receiving cavity 131 under positive pressure, so as to absorb clean water in the base station's clean water tank into the first receiving cavity 121, thereby replenishing the first clean water tank 120, and discharge the wastewater in the second receiving cavity 131 into the base station's wastewater tank, thereby draining the first wastewater tank 130. Furthermore, the cleaning equipment 100 of this application can realize the discharge and replenishment of water from the clean water tank, as well as the inlet and outlet of the sewage tank, through its own positive and negative pressure components 140. There is no need to install electric devices on the base station that cooperates with the cleaning equipment 100 to replenish water from the clean water tank or extract sewage from the sewage tank, which can effectively reduce costs.

[0050] In this embodiment, the vent includes a first vent 122 and a second vent 123. The positive and negative pressure assembly 140 can be selectively connected to either the first vent 122 or the second vent 123. When the positive and negative pressure assembly 140 is connected to the first vent 122, it can supply air to the first receiving cavity 121, making the first receiving cavity 121 a positive pressure state. When the positive and negative pressure assembly 140 is connected to the second vent 123, it can evacuate air from the first receiving cavity 121, making the first receiving cavity 121 a negative pressure state. In this embodiment, both the first vent 122 and the second vent 123 include a connecting pipe. The first end of the connecting pipe is located inside the first receiving cavity 121, and the second end is located outside the first receiving cavity 121. The first receiving cavity 121 communicates with the outside through the connecting pipe, and the positive and negative pressure assembly 140 is connected to the second end of the connecting pipe. The vent includes a first vent 132 and a second vent 133. A positive and negative pressure assembly 140 can be selectively connected to either the first vent 132 or the second vent 133. When the positive and negative pressure assembly 140 is connected to the first vent 132, it can supply air to the second receiving cavity 131, placing the second receiving cavity 131 under positive pressure. When the positive and negative pressure assembly 140 is connected to the second vent 133, it can extract air from the second receiving cavity 131, placing the second receiving cavity 131 under negative pressure. In this embodiment, both the first vent 132 and the second vent 133 include a connecting pipe. The first end of the connecting pipe is located inside the second receiving cavity 131, and the second end is located outside the second receiving cavity 131. The second receiving cavity 131 communicates with the outside through the connecting pipe, and the positive and negative pressure assembly 140 is connected to the second end of the connecting pipe.

[0051] See appendix Figure 2-6The positive and negative pressure assembly 140 includes a first air pump 144, a second air pump 145, and a reversing mechanism. Both the first air pump 144 and the second air pump 145 are unidirectional air pumps. The first air pump 144 has a first air inlet 1441 and a first air outlet 1442, and the second air pump 145 has a second air inlet 1451 and a second air outlet 1452. It should be noted that the unidirectional air pump mentioned in this application refers to a pump with fixed air inlets and outlets (i.e., the airflow direction inside the pump is fixed), where the air inlet can only be used for intake and the air outlet can only be used for exhaust. The bidirectional air pump mentioned in this application refers to a pump whose air inlet and outlet can be switched (i.e., the airflow direction inside the pump can be switched), where air can be intake through the air inlet and exhaust through the air outlet, or vice versa. The air inlet and outlet can be switched between each other without a strict distinction. The first air pump 144 and the second air pump 145 can be diaphragm pumps or other suitable unidirectional air pumps. Diaphragm pumps have advantages such as small size, small footprint, and low price. The reversing mechanism is used to switch the air inlet between being connected to the first air outlet 1442 and the first air inlet 1441. When the air inlet is connected to the first air outlet 1442, the first air pump 144 can generate positive pressure in the first receiving cavity 121 so that the liquid inside the first receiving cavity 121 leaves the first receiving cavity 121 through the water outlet 125. When the air inlet is connected to the first air inlet 1441, the first air pump 144 can generate negative pressure in the first receiving cavity 121 so that the liquid outside the first receiving cavity 121 enters the first receiving cavity 121 through the water inlet 124. The reversing mechanism is also used to switch the vent between being connected to the second air outlet 1452 and the second air inlet 1451. When the vent is connected to the second air outlet 1452, the second air pump 145 can generate positive pressure in the second receiving cavity 131 so that the liquid inside the second receiving cavity 131 leaves the second receiving cavity 131 through the liquid outlet 135. When the vent is connected to the second air inlet 1451, the second air pump 145 can generate negative pressure in the second receiving cavity 131 so that the liquid outside the second receiving cavity 131 enters the second receiving cavity 131 through the liquid inlet 134. In this embodiment of the application, the reversing mechanism connects the vent to the second air outlet 1452 and the air inlet to the first air inlet 1441 at the same time, so as to generate positive pressure in the second receiving cavity 131 and negative pressure in the first receiving cavity 121 simultaneously; and the reversing mechanism connects the vent to the second air inlet 1451 and the air inlet to the first air outlet 1442 at the same time, so as to generate negative pressure in the second receiving cavity 131 and positive pressure in the first receiving cavity 121 simultaneously.

[0052] The reversing mechanism includes a base 141, an actuation assembly, and a connecting pipe. The actuation assembly drives the connecting pipe to move, such that the connecting pipe connects the vent and the first air inlet 1441 and the vent and the second air outlet 1452, or connects the vent and the first air outlet 1442 and the vent and the second air inlet 1451. The actuation assembly includes a motor 142 and a connector 143. The base 141 has a first mounting seat 1411 for mounting and fixing the motor 142. The motor 142 can be fixed to the first mounting seat 1411 by welding or other suitable fixing methods. The motor 142 and the connector 143 are connected by a gear and rack transmission structure to drive the connector 143 to move in a linear direction. The connecting pipe includes a first pair of connecting pipes 146, a second pair of connecting pipes 147, a third pair of connecting pipes 148 and a fourth pair of connecting pipes 149. The first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148 and the fourth pair of connecting pipes 149 are connected to the connector 143 and move synchronously with the movement of the connector 143.

[0053] The base 141 also has a second mounting base 1412, which is used to mount and fix the first air pump 144 and the second air pump 145. The first air pump 144 and the second air pump 145 can be fixed to the second mounting base 1412 by welding or other suitable fixing methods. The base 141 also has a fifth pair of connecting pipes 1413, a sixth pair of connecting pipes 1414, a seventh pair of connecting pipes 1415, and an eighth pair of connecting pipes 1416. The first end of the fifth pair of connecting pipes 1413 is connected to the first air inlet 1441 of the first air pump 144, and the first end of the sixth pair of connecting pipes 1414 is connected to the first air outlet 1442 of the first air pump 144. The second ends of the fifth pair of connecting pipes 1413 and the second ends of the sixth pair of connecting pipes 1414 are arranged opposite each other and there is a first gap between them. The first end of the seventh pair of connecting pipes 1415 is connected to the second air inlet 1451 of the second air pump 145, and the first end of the eighth pair of connecting pipes 1416 is connected to the second air outlet 1452 of the second air pump 145. The second ends of the seventh pair of connecting pipes 1415 and the second ends of the eighth pair of connecting pipes 1416 are arranged opposite each other and there is a second gap between them. The first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148 and the fourth pair of connecting pipes 149 are all U-shaped pipes. The first ends of the first pair of connecting pipes 146 and the first ends of the second pair of connecting pipes 147 are both located in the first gap, and the first end of the first pair of connecting pipes 146 faces the second end of the fifth pair of connecting pipes 1413, the first end of the second pair of connecting pipes 147 faces the second end of the sixth pair of connecting pipes 1414, the first ends of the third pair of connecting pipes 148 and the first ends of the fourth pair of connecting pipes 149 are both located in the second gap, and the first end of the third pair of connecting pipes 148 faces the second end of the seventh pair of connecting pipes 1415, and the first end of the fourth pair of connecting pipes 149 faces the second end of the eighth pair of connecting pipes 1416. The first vent 122, at one end away from the first receiving cavity 121, and the second vent 123, at one end away from the first receiving cavity 121, are positioned opposite each other and have a third gap between them. The first vent 132, at one end away from the second receiving cavity 131, and the second vent 133, at one end away from the second receiving cavity 131, are positioned opposite each other and have a fourth gap between them. The second ends of the first pair of connecting pipes 146 and the second pairs of connecting pipes 147 are both located in the third gap, with the second end of the first pair of connecting pipes 146 facing the end of the first vent 122 away from the first receiving cavity 121, and the second end of the second pair of connecting pipes 147 facing the end of the second vent 123 away from the first receiving cavity 121. The second ends of the third pair of connecting pipes 148 and the fourth pair of connecting pipes 149 are both located in the fourth gap, with the second end of the third pair of connecting pipes 148 facing the end of the first vent 132 away from the second receiving cavity 131, and the second end of the fourth pair of connecting pipes 149 facing the end of the second vent 133 away from the second receiving cavity 131.

[0054] Because the first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148, and the fourth pair of connecting pipes 149 are connected to the connector 143 and move synchronously with the connector 143, the motor 142 and the connector 143 can drive the first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148, and the fourth pair of connecting pipes 149 to move as a whole to switch between a first position and a second position.

[0055] See appendix Figure 7-9 When the first pair of connectors 146, the second pair of connectors 147, the third pair of connectors 148, and the fourth pair of connectors 149 are in the first position, the two ends of the first pair of connectors 146 are respectively connected to the second end of the fifth pair of connectors 1413 and the end of the first vent 122 away from the first receiving cavity 121. The first pair of connectors 146 can be connected to the fifth pair of connectors 1413 and the first vent 122 by plugging or direct contact. The two ends of the second pair of connectors 147 are separated from the second end of the sixth pair of connectors 1414 and the end of the second vent 123 away from the first receiving cavity 121. At this time, the outlet of the first air pump 144 is connected to the first receiving cavity 121 through the fifth pair of connecting pipes 1413, the first pair of connecting pipes 146 and the first vent 122. The first air inlet 1441 of the first air pump 144 is not connected to the first receiving cavity 121. Air outside the first receiving cavity 121 can enter the first air pump 144 through the fifth pair of connecting pipes 1413 and the first air inlet 1441, and be pumped by the first air pump 144 into the first receiving cavity 121 through the fifth pair of connecting pipes 1413, the first pair of connecting pipes 146 and the first vent 122 to generate positive pressure in the first receiving cavity 121. When the first pair of connectors 146, the second pair of connectors 147, the third pair of connectors 148, and the fourth pair of connectors 149 are in the first position, the two ends of the third pair of connectors 148 are separated from the second end of the seventh pair of connectors 1415 and the end of the first vent 132 away from the second receiving cavity 131; the two ends of the fourth pair of connectors 149 are respectively connected to the second end of the eighth pair of connectors 1416 and the end of the second vent 133 away from the second receiving cavity 131, and the fourth pair of connectors 149 can be connected to the eighth pair of connectors 1416 and the second vent 133 by insertion or direct contact. At this time, the second air outlet 1452 of the second air pump 145 is not connected to the second receiving cavity 131. The second air inlet 1451 of the second air pump 145 is connected to the second receiving cavity 131 through the eighth pair of connecting pipes 1416, the fourth pair of connecting pipes 149 and the second vent 133. The second air pump 145 can draw gas from the second receiving cavity 131 through the eighth pair of connecting pipes 1416, the fourth pair of connecting pipes 149 and the second vent 133 and discharge it to the outside of the second receiving cavity 131 through the second air outlet 1452 and the seventh pair of connecting pipes 1415, so as to generate negative pressure in the second receiving cavity 131.

[0056] See appendix Figure 10-12When the first pair of connectors 146, the second pair of connectors 147, the third pair of connectors 148, and the fourth pair of connectors 149 are in the second position, the two ends of the first pair of connectors 146 are separated from the second end of the fifth pair of connectors 1413 and the end of the first vent 122 away from the first receiving cavity 121, respectively; the two ends of the second pair of connectors 147 are connected to the second end of the sixth pair of connectors 1414 and the end of the second vent 123 away from the first receiving cavity 121, respectively, and the second pair of connectors 147, the sixth pair of connectors 1414, and the second vent 123 can be connected by plugging. At this time, the air inlet of the first air pump 144 is connected to the first receiving cavity 121 through the sixth pair of connecting pipes 1414, the second pair of connecting pipes 147, and the second vent 123. The first air outlet 1442 of the first air pump 144 is not connected to the first receiving cavity 121. The first air pump 144 can draw gas from the second receiving cavity 131 through the sixth pair of connecting pipes 1414, the second pair of connecting pipes 147, and the second vent 123 and discharge it to the outside of the first receiving cavity 121 through the first air outlet 1442 and the fifth pair of connecting pipes 1413, so as to generate negative pressure in the first receiving cavity 121. When the first pair of connectors 146, the second pair of connectors 147, the third pair of connectors 148, and the fourth pair of connectors 149 are in the second position, the two ends of the third pair of connectors 148 are respectively connected to the second end of the seventh pair of connectors 1415 and the end of the first vent 132 away from the second receiving cavity 131, and the third pair of connectors 148 can be connected to the seventh pair of connectors 1415 and the first vent 132 by plugging; the two ends of the fourth pair of connectors 149 are respectively separated from the second end of the eighth pair of connectors 1416 and the end of the second vent 133 away from the second receiving cavity 131. At this time, the second air inlet 1451 of the second air pump 145 is not connected to the second receiving cavity 131. The air outlet of the second air pump 145 is connected to the second receiving cavity 131 through the seventh pair of connecting pipes 1415, the third pair of connecting pipes 148 and the first vent 132. The air outside the second receiving cavity 131 can enter the second air pump 145 through the eighth pair of connecting pipes 1416 and the second air inlet 1451, and be pumped by the second air pump 145 into the second receiving cavity 131 through the seventh pair of connecting pipes 1415, the third pair of connecting pipes 148 and the first vent 132 to generate positive pressure in the second receiving cavity 131.

[0057] See appendix Figure 7-12In this embodiment, a first leak-proof valve 126 is provided at the first vent 122. The first leak-proof valve 126 is configured to open the first vent 122 when the first connecting pipe 146 is in the first position (i.e., when the first connecting pipe 146 is connected to the first vent 122), and to close the first vent 122 when the first connecting pipe 146 is in the second position (i.e., when the first connecting pipe 146 is separated from the first vent 122). The first leak-proof valve 126 can be a spring leak-proof valve, which includes a spring and a baffle. When the first connecting pipe 146 is connected to the first vent 122, the push-out structure provided on the first connecting pipe 146 can push the baffle to the open position, thus opening the first vent 122; when the first connecting pipe 146 is separated from the first vent 122, the spring pushes the baffle to the closed position through its own elasticity, thus closing the first vent 122. A second leak-proof valve 127 is provided in the second vent 123. The second leak-proof valve 127 is configured to close the second vent 123 when the second connecting pipe 147 is in the first position, and to open the second vent 123 when the second connecting pipe 147 is in the second position. Thus, when a positive pressure is generated in the first receiving cavity 121, the gas in the first receiving cavity 121 will not leak through the second vent 123; when a negative pressure is generated in the first receiving cavity 121, the gas outside the first receiving cavity 121 will not enter the first receiving cavity 121 through the first vent 122. Accordingly, a third leak-proof valve 136 is provided in the first vent 132. The third leak-proof valve 136 is configured to close the first vent 132 when the third connecting pipe 148 is in the first position, and to open the first vent 132 when the third connecting pipe 148 is in the second position. A fourth leak-proof valve 137 is provided in the second vent 133. The fourth leak-proof valve 137 is configured to open the second vent 133 when the fourth connecting pipe 149 is in the first position, and to close the second vent 133 when the fourth connecting pipe 149 is in the second position. The second leak-proof valve 127, the third leak-proof valve 136, and the fourth leak-proof valve 137 can all be spring-loaded leak-proof valves.

[0058] See appendix Figure 7-12In this embodiment of the application, a first one-way valve 128 is provided at the water inlet 124. The first one-way valve 128 is configured to allow fluid outside the first receiving cavity 121 to enter the first receiving cavity 121 through the water inlet 124, and to restrict fluid inside the first receiving cavity 121 from leaving the first receiving cavity 121 through the water inlet pipe. The first one-way valve 128 can be, for example, a duckbill valve or a leak-proof valve. When the first one-way valve 128 is used as a leak-proof valve, it can be configured to open the water inlet 124 when it is connected to the clean water outlet on the base station, and to close the water inlet 124 when it is separated from the clean water outlet on the base station. A second one-way valve 129 is provided at the water outlet 125. The second one-way valve 129 is configured to allow fluid inside the first receiving cavity 121 to leave the first receiving cavity 121 through the water outlet 125, and to restrict fluid outside the first receiving cavity 121 from entering the first receiving cavity 121 through the water outlet 125. The second one-way valve 129 can be a duckbill valve. By setting the first one-way valve 128 and the second one-way valve 129, when a positive pressure is generated in the first receiving cavity 121, the clean water in the first receiving cavity 121 will not leak through the inlet 124; when a negative pressure is generated in the first receiving cavity 121, the gas or clean water outside the first receiving cavity 121 will not enter the first receiving cavity 121 through the outlet 125. Accordingly, a third check valve 138 is provided at the inlet 134. The third check valve 138 is configured to allow fluid outside the third receiving cavity 221 to enter the second receiving cavity 131 through the inlet 134, and to restrict fluid inside the second receiving cavity 131 from leaving the second receiving cavity 131 through the inlet 134. A fourth check valve 139 is provided at the outlet 135. The fourth check valve 139 is configured to allow fluid inside the second receiving cavity 131 to leave the second receiving cavity 131 through the outlet 135, and to restrict fluid outside the second receiving cavity 131 from entering the second receiving cavity 131 through the fourth outlet pipe. The third check valve 138 can be a duckbill valve, and the fourth check valve 139 can be a duckbill valve or a leak-proof valve.

[0059] See appendix Figure 2-6 In this embodiment, the base 141 is provided with a guide hole 1417, and the connector 143 is provided with a guide protrusion 1431 that matches the shape of the guide hole 1417. The guide protrusion 1431 is inserted into the guide hole 1417 and is configured to move only along the extension direction of the guide hole 1417. The extension direction of the guide hole 1417 is consistent with the direction from the first position to the second position (i.e., the direction from the first position to the second position). Thus, through the provision of the guide hole 1417 and the guide protrusion 1431, the first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148, and the fourth pair of connecting pipes 149 can move stably between the first position and the second position, and connect more accurately to each pair of connecting pipes, each air inlet pipe, and each air outlet pipe.

[0060] See appendix Figure 2-6 In this embodiment, the base 141 has a first position detection sensor 1418 and a second position detection sensor 1419, with a gap between them. The connector 143 has a positioning baffle 1432, which can be a protrusion on the connector 143 located in the gap between the first position detection sensor 1418 and the second position detection sensor 1419. The first position detection sensor 1418 and the second position detection sensor 1419 can be microswitches or other suitable contact sensors. See attached drawing. Figure 5 , 6When the connector 143 moves the first pair of connectors 146, the second pair of connectors 147, the third pair of connectors 148, and the fourth pair of connectors 149 to the first position, the positioning baffle 1432 abuts against the first position detection sensor 1418, triggering the first position detection sensor 1418; when the connector 143 moves the first pair of connectors 146, the second pair of connectors 147, the third pair of connectors 148, and the fourth pair of connectors 149 to the second position, the positioning baffle 1432 abuts against the second position detection sensor 1419, triggering the second position detection sensor 1419. The positive and negative pressure unit also includes a controller, which is connected to the first position detection sensor 1418, the second position detection sensor 1419 and the motor 142. The controller is used to control the motor 142 to stop working when triggered by the first position detection sensor 1418 or the second position detection sensor 1419, so that the connector 143 and the first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148 and the fourth pair of connecting pipes 149 stop moving, thereby enabling the first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148 and the fourth pair of connecting pipes 149 to move accurately to the first position or the second position and remain in that position. In some embodiments, the first leak-proof valve 126, the second leak-proof valve 127, the third leak-proof valve 136, and the fourth leak-proof valve 137 can be solenoid valves connected to a controller. When the first position detection sensor 1418 is triggered, the controller controls the first leak-proof valve 126 and the fourth leak-proof valve 137 to open, and the second leak-proof valve 127 and the third leak-proof valve 136 to close. When the second position detection sensor 1419 is triggered, the controller controls the second leak-proof valve 127 and the third leak-proof valve 136 to open, and the first leak-proof valve 126 and the fourth leak-proof valve 137 to close. In other embodiments, the controller can control the motor 142 (e.g., control the voltage, current, and operating time of the motor 142) to move the connector 143 and the first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148, and the fourth pair of connecting pipes 149 to a first position or a second position, and maintain them in that position. At this time, the first position detection sensor 1418 and the second position detection sensor 1419 may not be provided on the base 141, and the position baffle 1432 may not be provided on the connector 143.

[0061] In this embodiment, the first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148, and the fourth pair of connecting pipes 149 are switched between a first position and a second position via a motor 142 and a connector 143. In other embodiments, the first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148, and the fourth pair of connecting pipes 149 can also be switched between a first position and a second position via an actuation mechanism including a ball screw or a cylinder, etc., and those skilled in the art can choose according to their needs.

[0062] In this embodiment of the application, the first pair of connectors 146, the second pair of connectors 147, the third pair of connectors 148 and the fourth pair of connectors 149 are respectively connected to the air inlet and outlet of the first air pump 144 and the air inlet and outlet of the second air pump 145 through the fifth pair of connectors 1413, the sixth pair of connectors 1414, the seventh pair of connectors 1415 and the eighth pair of connectors 1416. In some other embodiments, the fifth pair of connecting pipes 1413, the sixth pair of connecting pipes 1414, the seventh pair of connecting pipes 1415, and the eighth pair of connecting pipes 1416 may not be provided on the base 141. Instead, the first ends of the fifth pair of connecting pipes 1413, the sixth pair of connecting pipes 1414, the seventh pair of connecting pipes 1415, and the eighth pair of connecting pipes 1416 are connected to the inlet and outlet ports of the first air pump 144 and the second air pump 145 through retractable pipes such as corrugated pipes. Alternatively, the fifth pair of connecting pipes 1413, the sixth pair of connecting pipes 1414, the seventh pair of connecting pipes 1415, and the eighth pair of connecting pipes 1416 may be configured as retractable pipes such as corrugated pipes, and their first ends may be connected to the inlet and outlet ports of the first air pump 144 and the second air pump 145, respectively. Therefore, when the first pair of connecting pipes 146, the second pair of connecting pipes 147, the third pair of connecting pipes 148, and the fourth pair of connecting pipes 149 switch between the first position and the second position, their first ends are always connected to the air inlet and outlet of the first air pump 144 and the air inlet and outlet of the second air pump 145. Their second ends are selectively connected to the first vent 122 and the second vent 133, or to the second vent 123 and the first vent 132.

[0063] In some other embodiments, the cleaning device 100 may be equipped with only one water tank, such as only a first clean water tank 120 or only a first wastewater tank 130. In this case, the positive and negative pressure assembly 140 may include a reversing mechanism and an air pump. The reversing mechanism includes a motor, a connector, and two connecting pipes located on the connector. The specific way in which the reversing mechanism and the air pump generate positive and negative pressure in the water tank is the same as the way in which the reversing mechanism and the first air pump 144 generate positive and negative pressure in the first clean water tank 120 in this application, or the same as the way in which the reversing mechanism and the second air pump 145 generate positive and negative pressure in the first wastewater tank 135, and will not be repeated here. For example, in some embodiments, the cleaning device 100 is provided with a wastewater tank, a reversing mechanism, and an air pump. When the cleaning device 100 cleans the surface to be cleaned, the reversing mechanism connects the vent of the wastewater tank with the air inlet of the air pump, generating a negative pressure in the wastewater tank to draw the wastewater generated during the cleaning process into the wastewater tank. When the cleaning device 100 moves to the floor drain, the reversing mechanism connects the vent of the wastewater tank with the air outlet of the air pump, generating a positive pressure in the wastewater tank to discharge the wastewater in the wastewater tank into the floor drain through the outlet on the wastewater tank.

[0064] In some other embodiments, the base 141, actuation assembly, and connecting pipe can be replaced by a first reversing valve and a second reversing valve. The first reversing valve is connected to the first air outlet 1442 and the first air inlet 1441 of the first air pump 144 and the vent of the first clean water tank 120. The first reversing valve can selectively connect the first air outlet 1442 of the first air pump 144 to the vent of the first clean water tank 120 to generate positive pressure in the first receiving cavity 121, or connect the first air inlet of the first air pump 144 to the vent of the first clean water tank 120 to generate negative pressure in the first receiving cavity 121. The second reversing valve is connected to the second air outlet 1452 and the second air inlet 1451 of the second air pump 145 and the vent of the first sewage tank 130. The second reversing valve can selectively connect the second air outlet 1452 of the second air pump 145 to the vent of the first sewage tank 130 to generate positive pressure in the second receiving cavity 131, or connect the second air inlet 1451 of the second air pump 145 to the vent of the first sewage tank 130 to generate negative pressure in the second receiving cavity 131.

[0065] In some other embodiments, the cleaning device may not have a reversing mechanism, and the first and second air pumps may be bidirectional air pumps. Both the vent and the air outlet have only one pipe. The first air pump is connected to the vent to supply or evacuate air from the first receiving cavity 121, placing the first receiving cavity 121 under positive or negative pressure. The second bidirectional air pump is connected to the air outlet to supply or evacuate air from the second receiving cavity 131, placing the second receiving cavity 131 under positive or negative pressure. The bidirectional air pump may be a peristaltic pump or other suitable bidirectional air pump.

[0066] See attached document Figure 13-18 An exemplary description of a cleaning system according to an embodiment of this application is provided. The cleaning system includes the cleaning equipment 100 and the base station 200 as described above. The base station 200 includes a base station body 210, a second clean water tank 220 and a second wastewater tank 230, which are detachably connected to the base station body 210.

[0067] The base station body 210 includes a housing 211 and a first water inlet 2111, a first water outlet 2114, a second water inlet 2115, and a second water outlet 2118 located on the housing 211. The first water inlet 2111 and the first water outlet 2114 are connected, and the second water inlet 2115 and the second water outlet 2118 are connected. Specifically, the base station body 210 also includes a sixth connecting pipe 212, a seventh connecting pipe 214, an eighth connecting pipe 215, a ninth connecting pipe 217, a first adapter pipe 213, and a second adapter pipe 216. The housing 211 also has a first adapter interface 2112 and a second adapter interface 2113. The first inlet 2111 is connected to the first end of the first adapter 2112 via the sixth connecting pipe 212. The first outlet 2114 is connected to the first end of the second adapter 2113 via the seventh connecting pipe 214. The second ends of the first adapter 2112 and the second ends of the second adapter 2113 are connected via the first adapter pipe 213, which can be a U-shaped connector or a U-shaped pipe. Thus, the first inlet 2111 is connected to the first outlet 2114 in sequence via the sixth connecting pipe 212, the first adapter 2112, the first adapter pipe 213, the second adapter 2113, and the seventh connecting pipe 214. The second inlet 2115 is connected to the first end of the third adapter 2116 via the eighth connecting pipe 215. The second outlet 2118 is connected to the first end of the fourth adapter 2117 via the ninth connecting pipe 217. The second ends of the third adapter 2116 and the fourth adapter 2117 are connected via the second adapter pipe 216, which can be a U-shaped connector or a U-shaped pipe. Thus, the second inlet 2115 is connected to the second outlet 2118 in sequence via the eighth connecting pipe 215, the third adapter 2116, the second adapter pipe 216, the fourth adapter 2117, and the ninth connecting pipe 217. The first adapter pipe 213 is detachably connected to the first adapter 2112 and the second adapter 2113, and the second adapter pipe 216 is detachably connected to the third adapter 2116 and the fourth adapter 2117. In some other embodiments, the base station 200 may not be provided with the sixth connecting pipe 212, the seventh connecting pipe 214, the eighth connecting pipe 215, the ninth connecting pipe 217, the first adapter pipe 213, the second adapter pipe 216, the first adapter interface 2112, and the second adapter interface 2113. Instead, the first water inlet 2111 and the first water outlet 2114 are directly connected through the connecting pipe, and the second water inlet 2115 and the second water outlet 2118 are directly connected through the connecting pipe.

[0068] The second clean water tank 220 includes a third receiving cavity 221, a third inlet 222, a third outlet 223, a third inlet pipe 224, a third outlet pipe 225, and a water-stopping element 226. The first end of the third inlet 222 is located outside the second clean water tank 220, and the second end of the third inlet 222 is connected to the upper part of the third receiving cavity 221 via the third inlet pipe 224. The first end of the third outlet 223 is located outside the second clean water tank 220, and the second end of the third outlet 223 is connected to the bottom of the third receiving cavity 221 via the third outlet pipe 225. The water-stopping element 226 is used to close the third inlet pipe 224 when the liquid level in the third receiving cavity 221 reaches a preset height. The water-stopping element 226 can be a float valve, which is connected to the third inlet pipe 224. The float in the float valve rises and falls synchronously with the rise and fall of the liquid level in the third receiving cavity 221. When the liquid level is lower than a preset height, the float valve opens the third inlet pipe 224. When the liquid level reaches the preset height, the float valve closes the third inlet pipe 224, preventing external clean water from entering the third receiving cavity 221 through the third inlet port 222 and the third inlet pipe 224. In some embodiments, the water-stopping element 226 may include a solenoid valve and a liquid level detection sensor. The solenoid valve is disposed on the third outlet pipe 225 and is used to close the third outlet pipe 225 when the liquid level detection sensor detects that the liquid level has reached the preset height, and to open the third outlet pipe 225 when the liquid level has not reached the preset height. The second sewage tank 230 includes a fourth receiving cavity and a fourth inlet port 231 communicating with the fourth receiving cavity.

[0069] The base station 200 according to an embodiment of this application can switch between a normal mode and an automatic water supply and drainage mode. See appendix. Figure 13 , 15 16. When the base station 200 is in normal mode, the second clean water tank 220 and the second wastewater tank 230 are connected to the base station body 210. The third outlet 223 of the second clean water tank 220 is connected to the first inlet 2111 of the base station body 210, and the fourth inlet 231 of the second wastewater tank 230 is connected to the second outlet 2118 of the base station body 210. The second end of the first adapter 2112 and the second end of the second adapter 2113 on the base station body 210 are connected through the first adapter pipe 213. The second end of the third adapter 2116 and the second end of the fourth adapter 2117 are connected through the second adapter pipe 216. Thus, the third receiving cavity 221 of the second clean water tank 220 is connected to the first outlet 2114 of the base station body 210, and the fourth receiving cavity of the second wastewater tank 230 is connected to the second inlet 2115 of the base station body 210.

[0070] When the cleaning equipment 100 docks with the base station 200 (that is, when the cleaning equipment 100 moves to the preset position in the base station 200), the inlet 124 of the first clean water tank 120 is connected to the first outlet 2114 of the base station body 210. In other words, the inlet 124 is connected to the second clean water tank 220 through the base station body 210, and the outlet 135 of the first wastewater tank 130 is connected to the second inlet 2115 of the base station body 210. The outlet 135 is connected to the second wastewater tank 230 through the base station body 210. At this time, as long as... The reversing mechanism connects the vent of the first clean water tank 120 with the first air inlet 1441 of the first air pump 144, and connects the vent of the first sewage tank 130 with the second air outlet 1442 of the second air pump 145. The first air pump 144 can generate negative pressure in the first receiving cavity 121 to draw clean water from the second clean water tank 220 into the first clean water tank 120. The second air pump 145 can generate positive pressure in the second receiving cavity 131 to discharge sewage from the first sewage tank 130 into the second sewage tank 230 of the base station 200.

[0071] In other words, for the cleaning system of this application embodiment, when the cleaning device 100 cleans the surface to be cleaned, the first receiving cavity 121 can be in a positive pressure state and the second receiving cavity 131 can be in a negative pressure state through the reversing mechanism, the first air pump 144 and the second air pump 145, so as to supply clean water in the first receiving cavity 121 to the cleaning component and absorb the sewage generated during the cleaning process into the second receiving cavity 131. When the cleaning device 100 docks with the base station 200, that is, when it moves to the preset position in the base station body 210, the first receiving cavity 121 can be in a negative pressure state and the second receiving cavity 131 can be in a positive pressure state through the reversing mechanism, the first air pump 144 and the second air pump 145, so as to absorb clean water in the second clean water tank 220 of the base station 200 into the first receiving cavity 121, thereby replenishing the first clean water tank 120, and discharging the sewage in the second receiving cavity 131 into the second sewage tank 230 of the base station 200, thereby draining the first sewage tank 130. Furthermore, the cleaning equipment 100 of this application can realize the water discharge and replenishment of the first clean water tank 120, as well as the water intake and drainage of the first sewage tank 130 by itself, without the need to install electric devices such as air pumps or water pumps on the base station 200 to replenish the first clean water tank 120 or extract the sewage from the first sewage tank 130, which can effectively reduce the cost and size of the base station 200.

[0072] According to the embodiments of this application, the base station 200 can be switched from a normal mode to an automatic water supply and drainage mode. Specifically, the second clean water tank 220, the first adapter pipe 213, and the second adapter pipe 216 are removed from the base station body 210. The third inlet 222 of the second clean water tank 220 is connected to an external water supply unit such as a faucet through a first water pipe 300. The third outlet 223 of the second clean water tank 220 is connected to the second end of the second adapter interface 2113 of the base station body 210 through a second water pipe 400. The second end of the third adapter interface 2116 is connected to an external drainage unit such as a floor drain through a third water pipe 500. This allows the base station 200 to be switched to an automatic water supply and drainage mode. See appendix. Figure 17-18 When the base station 200 is in automatic water supply and drainage mode, the external water supply unit is connected to the first water outlet 2114 through the first water pipe 300, the second clean water tank 220, the second water pipe 400, the second adapter 2113, and the seventh connecting pipe 214. The second water inlet 2115 is connected to the floor drain through the eighth connecting pipe 215, the third adapter 2116, and the third water pipe 500. Clean water from the external water supply unit enters the third receiving cavity 221 through the third water inlet 222 and the third water inlet pipe 224 of the second clean water tank 220. When the level of clean water in the third receiving cavity 221 reaches a preset height, the water stopper 226 closes the third water inlet pipe 224, preventing clean water from the external water supply unit from continuing to enter the third receiving cavity 221. When the cleaning device 100 is connected to the base station 200, that is, when the cleaning device 100 enters the preset position in the base station 200 (that is, when the inlet 124 is connected to the first outlet 2114 and the outlet 135 is connected to the second inlet 2115), the first receiving chamber 121 can be put into a negative pressure state and the second receiving chamber 131 can be put into a positive pressure state through the reversing mechanism, the first air pump 144 and the second air pump 145, so as to draw clean water from the second clean water tank 220 into the first receiving chamber 121, thereby replenishing the first clean water tank 120, and discharging the sewage in the first sewage tank 130 into the floor drain, thereby draining the first sewage tank 130. During this process, the liquid level in the second clean water tank 220 decreases, and the water stopper 226 opens the third water inlet pipe 224. Clean water from the external water supply unit can enter the third receiving cavity 221 through the third water inlet 222 and the third water inlet pipe 224 of the second clean water tank 220 to replenish the second clean water tank 220.

[0073] For conventional cleaning systems, achieving automatic water supply and drainage typically requires an electric device on the base station 200 to automatically drain wastewater from the second wastewater tank 230 and automatically add clean water to the second clean water tank 220. However, the cleaning system of this embodiment eliminates the need for such an electric device on the base station 200, enabling convenient automatic water supply and drainage, significantly reducing costs. Furthermore, users can easily switch between a conventional mode and an automatic water supply and drainage mode as needed. The conventional mode supplies water to the first clean water tank 120 of the cleaning equipment 100 through the second clean water tank 220 connected to the first water inlet 2111 of the base station body 210, and collects wastewater from the first wastewater tank 130 of the cleaning equipment 100 through the second wastewater tank 230 connected to the first water outlet 2114 of the base station body 210 (e.g., ...). Figure 15 , 16 As shown), this mode requires the user to manually add clean water to the second clean water tank 220 and manually empty the wastewater from the second wastewater tank 230; the automatic water supply and drainage mode is a mode where an external water supply unit, such as a faucet, replenishes clean water to the second clean water tank 220, and wastewater is discharged into the sewer through an external drainage unit, such as a floor drain (e.g., Figure 17 , 18 As shown in the image, this mode does not require the user to manually empty the wastewater or add clean water.

[0074] In some other embodiments, the base station in the cleaning system may include a base station body, a water inlet pipe disposed on the base station body, and a sewage pipe disposed on the base station body. The water inlet pipe is used to connect to an external water supply unit such as a faucet, and the sewage pipe is used to connect to an external drainage unit such as a floor drain. The base station body also has a water outlet connected to the water inlet pipe and a water inlet connected to the sewage pipe. When the cleaning device 100 docks with the base station, that is, when the cleaning device 100 enters a preset position in the base station 200, the water inlet 124 of the first clean water tank 120 is connected to the water outlet of the base station body, and the liquid outlet 135 of the first sewage tank 130 is connected to the water inlet of the base station body. That is, the first clean water tank 120 is connected to the external water supply unit through the water outlet and water inlet pipe on the base station body, and the first sewage tank 130 is connected to the external drainage unit through the water inlet and sewage pipe on the base station body. At this time, the vent of the first clean water tank 120 is connected to the first air inlet 1441 of the first air pump 144 via the reversing mechanism, and the vent of the first wastewater tank 130 is connected to the second air outlet 1442 of the second air pump 145. The first air pump 144 can generate negative pressure in the first receiving cavity 121 to allow clean water from the external water supply unit to enter the first receiving cavity 121 of the first clean water tank 120 through the water inlet pipe, the water outlet, and the water inlet 124 on the base station body. The second air pump 145 can generate positive pressure in the second receiving cavity 131 to allow wastewater in the second receiving cavity 131 of the first wastewater tank 130 to enter the external drainage unit through the liquid outlet 135, the water inlet on the base station body, and the sewage pipe on the base station body. In this embodiment of the cleaning system, the base station can achieve automatic water supply and drainage without the need for a water tank.

[0075] Of course, in some other embodiments, the base station of the cleaning system only has a conventional mode, that is, the structure and pipeline for switching are omitted. Specifically, the base station 200 includes a base station body 210, a second clean water tank 220 and a second wastewater tank 230, which are detachably connected to the base station body 210. The third outlet 223 of the second clean water tank 220 is used to communicate with the inlet 124 of the first clean water tank 120, and the fourth inlet 231 of the second wastewater tank 230 is used to communicate with the outlet 135 of the first wastewater tank 130. When the cleaning equipment performs a cleaning task, the first receiving chamber 121 can be in a positive pressure state and the second receiving chamber 131 can be in a negative pressure state through the reversing mechanism, the first air pump 144 and the second air pump 145, so as to supply the clean water in the first receiving chamber 121 to the cleaning components and absorb the wastewater generated during the cleaning process into the second receiving chamber 131. When the cleaning equipment 100 docks with the base station 200, that is, when it moves to the preset position in the base station body 210, the first receiving cavity 121 can be put into a negative pressure state through the reversing mechanism, the first air pump 144 and the second air pump 145, so as to draw clean water from the second clean water tank 220 of the base station 200 into the first receiving cavity 121 to replenish the first clean water tank 120. The second receiving cavity 131 can be put into a positive pressure state to discharge the sewage in the second receiving cavity 131 into the second sewage tank 230 of the base station 200 to drain the first sewage tank 130.

[0076] It is worth mentioning that when the cleaning equipment 100 includes only one water tank, such as only the first clean water tank 120, the corresponding electric components corresponding to the second wastewater tank 230 or the external drainage unit can be omitted on the base station used with the cleaning equipment 100. Depending on the state of the cleaning equipment 100, the positive and negative pressure switching within the first clean water tank 120 is achieved through the reversing mechanism and the electric components connected to the first clean water tank 120. Similarly, when the cleaning equipment 100 includes only the first wastewater tank 130, the corresponding electric components corresponding to the second clean water tank 220 or the external water supply unit can be omitted on the base station used with the cleaning equipment 100. Depending on the state of the cleaning equipment 100, the positive and negative pressure switching within the first wastewater tank 130 is achieved through the reversing mechanism and the electric components connected to the first wastewater tank 130.

[0077] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above exemplary embodiments are merely illustrative and are not intended to limit the scope of this application. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of this application. All such changes and modifications are intended to be included within the scope of this application as claimed in the appended claims.

Claims

1. A cleaning device, characterized in that, include: Equipment body; A drive assembly is connected to the main body of the device. The drive assembly includes a drive motor and a traveling wheel. The drive motor is connected to the traveling wheel for driving the traveling wheel to rotate, thereby driving the main body of the device to move on the surface to be cleaned. The first sewage tank is installed on the main body of the equipment. The first sewage tank has a second receiving cavity and a vent, a liquid inlet and a liquid outlet communicating with the second receiving cavity. An air pump having an air outlet and an air inlet; A reversing mechanism is used to switch the air vent between being connected to the air outlet and being connected to the air inlet. The reversing mechanism includes a motor, a connector, and two connecting pipes located on the connector. When the vent is connected to the outlet, the air pump can generate positive pressure in the second containment cavity to allow the liquid inside the second containment cavity to leave the second containment cavity through the outlet. When the vent is connected to the inlet, the air pump can generate negative pressure in the second containment cavity to allow the liquid outside the second containment cavity to enter the second containment cavity through the inlet.

2. A cleaning device, characterized in that, include: Equipment body; A drive assembly is connected to the main body of the device. The drive assembly includes a drive motor and a traveling wheel. The drive motor is connected to the traveling wheel for driving the traveling wheel to rotate, thereby driving the main body of the device to move on the surface to be cleaned. The first clean water tank is installed on the main body of the equipment. The first clean water tank has a first receiving cavity and a vent, a water inlet and a water outlet communicating with the first receiving cavity. The first sewage tank is installed on the main body of the equipment. The first sewage tank has a second receiving cavity and a vent, a liquid inlet and a liquid outlet communicating with the second receiving cavity. A first air pump, the first air pump having a first air outlet and a first air inlet; A second air pump, the second air pump having a second air outlet and a second air inlet; A reversing mechanism is provided, which is used to switch the vent between being connected to the first air outlet and being connected to the first air inlet, and to switch the vent between being connected to the second air outlet and being connected to the second air inlet. The reversing mechanism is also used to connect the vent to the first air inlet while the vent is connected to the second air outlet, and to connect the vent to the first air outlet while the vent is connected to the second air inlet. When the vent is connected to the first air outlet, the first air pump can generate positive pressure in the first accommodating cavity so that the liquid inside the first accommodating cavity leaves the first accommodating cavity through the water outlet. When the vent is connected to the first air inlet, the first air pump can generate negative pressure in the first accommodating cavity so that the liquid outside the first accommodating cavity enters the first accommodating cavity through the water inlet. When the vent is connected to the second air outlet, the second air pump can generate positive pressure in the second accommodating cavity so that the liquid inside the second accommodating cavity leaves the second accommodating cavity through the liquid outlet. When the vent is connected to the second air inlet, the second air pump can generate negative pressure in the second accommodating cavity so that the liquid outside the second accommodating cavity enters the second accommodating cavity through the liquid inlet.

3. The cleaning equipment according to claim 2, characterized in that, The reversing mechanism includes an actuation component and a connecting pipe. The actuation component is used to drive the connecting pipe to move so that the connecting pipe connects the vent and the first air inlet and connects the vent and the second air outlet, or connects the vent and the first air outlet and connects the vent and the second air inlet.

4. The cleaning equipment according to claim 3, characterized in that, The vent includes a first vent and a second vent; The vent includes a first vent and a second vent; The actuation component is used to move the connecting pipe to switch the connecting pipe between a first position and a second position; When the connecting pipe is in the first position, the connecting pipe connects the first vent and the first outlet, and the first air pump can supply air to the first receiving cavity to generate positive pressure in the first receiving cavity; the connecting pipe also connects the first vent and the second inlet, and the second air pump can extract gas from the second receiving cavity to generate negative pressure in the second receiving cavity. When the connecting pipe is in the second position, the connecting pipe connects the second vent and the first inlet, and the first air pump can draw gas from the first accommodating cavity to generate negative pressure in the first accommodating cavity; the connecting pipe also connects the second vent and the second outlet, and the second air pump can supply gas to the second accommodating cavity to generate positive pressure in the second accommodating cavity.

5. The cleaning equipment according to claim 4, characterized in that, A first leak-proof valve is provided at the first vent. The first leak-proof valve is configured to open the first vent when the connecting pipe is in the first position and to close the first vent when the connecting pipe is in the second position. A second leak-proof valve is provided at the second vent. The second leak-proof valve is configured to close the second vent when the connecting pipe is in the first position and to open the second vent when the connecting pipe is in the second position. A third leak-proof valve is provided at the first vent. The third leak-proof valve is configured to open the first vent when the connecting pipe is in the first position and close the first vent when the connecting pipe is in the second position. A fourth leak-proof valve is provided at the second vent. The fourth leak-proof valve is configured to close the second vent when the connecting pipe is in the first position and to open the second vent when the connecting pipe is in the second position.

6. The cleaning equipment according to claim 4, characterized in that, The connecting pipe includes a first pair of connectors, a second pair of connectors, a third pair of connectors, and a fourth pair of connectors; When the connecting pipe is in the first position, the two ends of the first pair of connecting pipes are respectively connected to the first vent and the first air outlet, and the second pair of connecting pipes are disconnected from the second vent and the first air inlet; the two ends of the third pair of connecting pipes are respectively connected to the first vent and the second air inlet, and the fourth pair of connecting pipes are disconnected from the second vent and the second air outlet. When the connecting pipe is in the second position, the first pair of connecting pipes is detached from the first vent and the first outlet, and the two ends of the second pair of connecting pipes are respectively connected to the second vent and the first inlet; the third pair of connecting pipes is detached from the first vent and the second inlet, and the two ends of the fourth pair of connecting pipes are respectively connected to the second vent and the second outlet.

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