Cleaning device maintenance station and cleaning system

Abstract

A maintenance station and cleaning system for a cleaning device, the maintenance station comprising: an isolation chamber configured to have a dirt discharge outlet and to be connected to a wastewater tank of the cleaning device when the cleaning device returns to the maintenance station and to be operable to be in fluid communication with the wastewater tank; and an isolation valve provided at the dirt discharge outlet and configured to switch between an open and closed state, wherein when the isolation valve is in an open state, wastewater in the isolation chamber is discharged from the dirt discharge outlet, and when the isolation valve is in a closed state, the dirt discharge outlet is blocked.

Description

[Technical Field]

[0001] (Related Applications) This application claims priority to Chinese Patent Application No. 202310327575.3 filed on March 24, 2023, and Chinese Patent Application Nos. 202311018508.X, 202311018518.3, and 202311019457.2 filed on August 11, 2023, the entire contents of which are incorporated herein by reference.

[0002] FIELD OF THE DISCLOSURE The present disclosure relates to the field of automated cleaning, and more particularly to cleaning device maintenance stations and cleaning systems. [Background technology]

[0003] With the advancement of science and technology, cleaning devices such as floor vacuum cleaners and sweeping and mopping cleaners have become widely adopted in many homes, and floor vacuum cleaners can save time and effort compared to traditional manual cleaning. Floor vacuum cleaners usually consist of a main body and a cleaning base. The main body is usually equipped with a dirty water tank, a clean water tank, and a main suction fan, while the cleaning base contains a cleaning roller for sweeping and mopping. Cleaning liquid, such as water, from the clean water tank is sprayed onto the cleaning roller through built-in piping, and the cleaning roller rotates at high speed to wipe and clean the floor, and the dirty water is collected in the dirty water tank.

[0004] Since the capacity of the dirty water tank and clean water tank in the floor cleaning machine is limited, in order to avoid frequent manual cleaning of the dirty water tank and / or injection of clean water into the clean water tank, a maintenance station is designed to be used in combination with the floor cleaning machine, and when the cleaning device returns to the maintenance station, the dirty water in the dirty water tank can be collected in the maintenance station, and clean water can also be replenished from the maintenance station to the clean water tank. Summary of the Invention

[0005] Some embodiments of the present disclosure provide a maintenance station for a cleaning device, the maintenance station comprising: an isolation chamber having a dirt outlet and configured to be operably connected to and in fluid communication with a wastewater tank of the cleaning device when the cleaning device returns to the maintenance station; and an isolation valve provided at the dirt discharge outlet and configured to switch between an open and closed state, wherein when the isolation valve is in an open state, the dirty water in the isolation chamber is discharged from the dirt discharge outlet, and when the isolation valve is in a closed state, the dirt discharge outlet is blocked.

[0006] Some embodiments of the present disclosure further provide a maintenance station for a cleaning device, the maintenance station comprising: a power source configured to provide dirt evacuation power; an isolation chamber operably configured to be in fluid communication with a wastewater tank of the cleaning machine when the cleaning machine returns to the maintenance station; The isolation room comprises: a dirt outlet configured to discharge dirty water from the isolation chamber; a wastewater inlet passageway outlet configured to be operably connected to a wastewater tank of the cleaning device and configured to allow wastewater in the wastewater tank of the cleaning device to flow into the isolation chamber; an exhaust passage inlet communicating with the power source and configured to create a negative pressure in the isolation chamber under the suction action of the power source;

[0007] Some embodiments of the present disclosure further provide a maintenance station for a cleaning device, the maintenance station comprising: a collection tank configured to contain the wastewater; an isolation chamber disposed within the recovery tank and configured to be in operable fluid communication with a wastewater tank of the cleaning device when the cleaning device returns to a maintenance station; and a float provided at the bottom of the isolation chamber and configured to detect whether the isolation chamber and / or recovery tank are in place and / or whether the recovery tank is full.

[0008] Some embodiments of the present disclosure further provide a cleaning system comprising the maintenance station described in the embodiments.

[0009] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, illustrate embodiments pertaining to the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are merely some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these accompanying drawings without creative work. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic diagram illustrating a usage scenario of a maintenance station of a cleaning device provided by some embodiments of the present disclosure; [Figure 2] 1 is a schematic cross-sectional view of a maintenance station of a cleaning device according to some embodiments of the present disclosure; [Figure 3] A local enlarged schematic diagram of region M in Figure 2 [Figure 4] 1 is a schematic diagram of a wastewater collection path of a maintenance station of a cleaning device provided by some embodiments of the present disclosure. [Figure 5] 1 is a schematic diagram of a local structure of a maintenance station of a cleaning device provided by some embodiments of the present disclosure; [Figure 6] 1 is a schematic diagram of a local cross-sectional structure of a maintenance station of a cleaning device provided by some embodiments of the present disclosure; [Figure 7] 1 is a schematic diagram illustrating a three-dimensional structure of a valve device provided by some embodiments of the present disclosure. [Figure 8] 1 is a structural schematic diagram of a valve device provided by some embodiments of the present disclosure in a closed state; [Figure 9]1 is a structural schematic diagram of a valve device provided by some embodiments of the present disclosure in an open state; [Figure 10] 1 is a structural schematic diagram of an airway of a self-cleaning system provided by some embodiments of the present disclosure; [Figure 11] 1 is a schematic diagram of a pipeline structure of a wastewater tank of a self-cleaning system provided by some embodiments of the present disclosure; [Figure 12] 1 is a structural schematic diagram of a check valve provided by some embodiments of the present disclosure; [Figure 13] 1 is a schematic diagram of a cross-sectional topographical structure of a maintenance station provided by some embodiments of the present disclosure; [Figure 14] 1 is a structural schematic diagram of a containment chamber provided by some embodiments of the present disclosure; [Figure 15] 1 is a schematic diagram of a cross-sectional structure of a base plate of a maintenance station provided by some embodiments of the present disclosure; [Figure 16] 10 is a schematic cross-sectional view of the other side of the base plate of the maintenance station provided by some embodiments of the present disclosure; [Figure 17] Enlarged schematic diagram of the structure in A of Figure 16 DETAILED DESCRIPTION OF THE INVENTION

[0011] In order to make the purpose, solution and advantages of the present invention clearer, the present invention will be described in more detail below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments made by those skilled in the art without inventive efforts are also included in the protection scope of the present invention.

[0012] It should be further explained that terms such as "comprises," "has," or any other synonyms are intended to cover a non-exclusive inclusion. Thus, a product or device having a series of elements not only has those elements, but also other elements not expressly listed or inherent in such product or device. Unless further limited, an element qualified by the phrase "comprises a ..." does not preclude a product or device having said element from further including other identical elements.

[0013] In this field, examples of cleaning devices include handheld floor cleaners and self-propelled sweeping and mopping robots. A cleaning device typically includes a dirty water tank, a clean water tank, and a main suction fan. The cleaning base includes a sweeping and wiping cleaning element, such as a cleaning roller. The number of cleaning elements may be one, two, or more than two. Cleaning liquid, such as clean water, from the clean water tank is sprayed onto the cleaning element and / or the surface to be cleaned through built-in piping. The cleaning element moves to wipe and clean the ground. At the same time, the main fan generates negative pressure in the device's airway, sucking dirty water (which may contain solid debris) from the cleaning surface through the dirt suction port of the cleaning device and sucking it into the dirty water tank. The capacity of the dirty water tank and clean water tank in the floor cleaning machine is limited, and in order to avoid frequent manual cleaning of the dirty water tank and / or injection of clean water into the clean water tank, a maintenance station is designed to be used in combination with the floor cleaning machine, and after the cleaning device returns to the maintenance station, the dirty water in the dirty water tank can be collected in the maintenance station, the clean water can be replenished from the maintenance station, and the cleaning device, e.g., the floor cleaning machine, can be charged through a charging interface of the maintenance station.

[0014] In some related technologies, wastewater is stored in the maintenance station for a long period of time, which can cause a foul odor or unpleasant smell, and the wastewater and unpleasant smell can be discharged outside, causing discomfort to users.

[0015] The present disclosure provides a maintenance station for a cleaning machine, the cleaning machine including an isolation chamber having a dirt discharge port and configured to be connected to a wastewater tank of the cleaning machine when the cleaning machine returns to the maintenance station and operably configured to be in fluid communication with the wastewater tank, and an isolation valve provided at the dirt discharge port and configured to switch between an open state and an open state, such that when the isolation valve is in an open state, wastewater in the isolation chamber is discharged from the dirt discharge port, and when the isolation valve is in a closed state, the dirt discharge port is blocked. In the present disclosure, an isolation chamber having an isolation valve is provided in a wastewater collection path of the maintenance station, so that bad odors generated by long-term wastewater and / or bad odors generated by sewers can be prevented from entering the isolation chamber and being discharged to the outside, causing discomfort to users.

[0016] Selected embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings.

[0017] Fig. 1 is a schematic diagram of a usage scene of a maintenance station for a cleaning device provided by some embodiments of the present disclosure. Fig. 2 is a schematic diagram of a cross-sectional structure of a maintenance station for a cleaning device provided by some embodiments of the present disclosure, taken along line A-A' in Fig. 1. Fig. 3 is a local enlarged schematic diagram of region M in Fig. 2. Fig. 4 is a schematic diagram of a wastewater recovery path of a maintenance station for a cleaning device provided by some embodiments of the present disclosure, taken along line B-B' in Fig. 1. Fig. 5 is a schematic diagram of a local structure of a maintenance station for a cleaning device provided by some embodiments of the present disclosure, where the top cover of the isolation chamber is not shown.

[0018] As shown in FIGS. 1 to 5, some embodiments of the present disclosure provide a maintenance station 100 for a cleaning device, the maintenance station 100 including an isolation chamber 10 and an isolation valve 30.

[0019] The isolation chamber 10 has a dirt discharge port 13, and is configured to be connected to a dirty water tank of the cleaning device, such as a floor cleaner, when the cleaning device returns to the maintenance station, and to be in operable fluid communication with the dirty water tank. When the isolation chamber 10 and the dirty water tank are in fluid communication after the cleaning device returns to the maintenance station, dirty water from the dirty water tank can flow into the isolation chamber 10, and optionally, the dirt discharge port 13 is located at the lowest point of the bottom of the isolation chamber 10, so that dirty water flows from the isolation chamber 10 into the recovery tank 40 under the action of gravity.

[0020] An isolation valve 30 is provided at the dirt discharge outlet 13 and is configured to be switched between an open and closed state. When the isolation valve 30 is in an open state, the wastewater in the isolation room 10 can be discharged from the dirt discharge outlet 13. When the isolation valve is in a closed state, the dirt discharge outlet 13 is blocked, preventing bad odors from entering the isolation room through the dirt discharge outlet 13.

[0021] In the present disclosure, an isolation chamber having an isolation valve is provided in the wastewater collection path of the maintenance station, thereby preventing the bad odors generated by wastewater that has been present for a long time and / or the bad odors generated in the sewer system from entering the isolation chamber and being discharged to the outside, causing discomfort to users.

[0022] In some embodiments, as shown in Figures 1 to 5, the isolation chamber 10 further has a wastewater inlet passage 11 and an exhaust passage 12, and the wastewater inlet passage 11 is configured to be operable to be fluidly connected to the wastewater tank of the cleaning device, for example, a floor cleaner, when the cleaning device returns to the maintenance station 100, so that the wastewater in the wastewater tank of the cleaning device flows into the isolation chamber 10 through the wastewater inlet passage 11, and the wastewater in the cleaning device is collected at the maintenance station 100.

[0023] The maintenance station 100 further includes a wastewater suction fan 20, which is installed, for example, on the side below the isolation chamber 10 and is configured to communicate with the exhaust passage 12 of the isolation chamber 10. The wastewater suction fan 20 provides power for retrieving wastewater from the cleaning device to the maintenance station 100. When the wastewater suction fan 20 operates, a vacuum is created in the isolation chamber 10, and the wastewater in the wastewater tank of the cleaning device flows into the isolation chamber 10 through the wastewater introduction passage 11 under the action of vacuum negative pressure.

[0024] In some other embodiments, when the isolation chamber is connected to the wastewater tank of the cleaning device, the height of the isolation chamber is lower than the height of the wastewater tank, and the wastewater in the wastewater tank flows into the isolation chamber under the action of gravity. In this case, the wastewater suction fan may be omitted.

[0025] In some embodiments, as shown in FIGS. 1 to 5 , the maintenance station 100 further includes a recovery tank 40, which is selectively fluidly connected to the isolation chamber 10 via an isolation valve 30, and is configured to store wastewater discharged from the dirt discharge outlet 13. The recovery tank 40 is disposed below the isolation box 10 and is configured to collect wastewater discharged from the dirt discharge outlet 13. When the isolation valve 30 is in an open state, the wastewater in the isolation chamber 10 is collected into the recovery tank 40 through the dirt discharge outlet 13, and when the isolation valve 30 is in a closed state, the dirt discharge outlet 13 is blocked, preventing bad odors and unpleasant smells generated in the recovery tank 40 from entering the isolation chamber 10 through the dirt discharge outlet 13 and diffusing to the outside.

[0026] In another embodiment, the maintenance station includes a sewer line, which is directly connected to the soiled discharge port 13, and at least a portion of the isolation valve 30 is provided in the sewer line. The sewer line is selectively fluidly connected to the isolation chamber 10 through the isolation valve 30, so that the wastewater in the isolation chamber 10 can be directly discharged, for example, into an indoor sewer in a living environment.

[0027] 1 to 5, the isolation valve 30 includes an isolation valve body 31 and a restoring structure 32. The isolation valve body 31 is configured to block the dirt outlet 13, and is, for example, a sheet-like structure, a plug-like structure, etc. The restoring structure 32 is configured to cause the isolation valve 30 to have a tendency to close, i.e., under the action of the restoring structure 32, in a normal state, the isolation valve 30 is in a closed state, i.e., the isolation valve body 31 blocks the dirt outlet 13.

[0028] Specifically, when there is no wastewater in the isolation chamber 10 and the wastewater suction fan 20 is not operating, the isolation valve 30 is in a closed state under the action of the restoring structure 32. That is, when a cleaning device, such as a floor sweeper, has not returned to the maintenance station, or when the cleaning device, such as a floor sweeper, returns to the maintenance station, completes the wastewater recovery work, and all the wastewater in the isolation chamber 10 has been discharged, all the wastewater in the isolation chamber 10 is then discharged into the recovery tank 40, and the isolation valve 30 is in a closed state under the action of the restoring structure 32, blocking the dirt discharge port and preventing the foul odors and unpleasant smells generated in the recovery tank 40 from entering the isolation chamber 10 through the dirt discharge port 13 and diffusing to the outside.

[0029] When the maintenance station 100 performs a wastewater collection operation, the wastewater suction fan 20 operates, and the wastewater is temporarily stored in the isolation chamber 10, and the isolation valve 10 is closed under the suction force of the wastewater suction fan 20. That is, when a cleaning device, such as a floor sweeper, returns to the maintenance station to collect wastewater, the wastewater inlet passage 11 of the isolation chamber 10 communicates with the wastewater tank of the cleaning device, and the wastewater suction fan 20, which communicates with the exhaust passage 12 of the isolation chamber 10, starts to operate, sucking in the gas in the isolation chamber 10 and creating a negative pressure in the isolation chamber 10. Under the action of the negative pressure, the wastewater in the wastewater tank of the cleaning device is sucked into the isolation chamber 10, and the wastewater that flows into the isolation chamber 10 is temporarily stored therein, and the isolation valve 30 overcomes the gravity of the wastewater temporarily stored in the isolation chamber 10 under the action of the negative pressure and restoration structure 32, and remains closed.

[0030] When the maintenance station 100 performs a wastewater recovery operation and the wastewater suction fan 20 stops, the isolation valve 30 switches from a closed state to an open state under the gravitational force of the wastewater, and the wastewater in the isolation chamber 10 is discharged from the dirt discharge port 13, for example, into the recovery tank 40. That is, after the wastewater from a cleaning device, such as a floor cleaner, is discharged into the isolation chamber 10 of the maintenance station 10 and temporarily stored therein, the wastewater suction fan 20 stops, the negative pressure generated in the isolation chamber 10 disappears, and the isolation valve 30 switches from a closed state to an open state under the gravitational force of the wastewater, and the gravitational force of the wastewater temporarily stored in the isolation chamber 10 becomes significantly larger than the restoring force of the restoring structure 32, and at this time the wastewater in the isolation chamber 10 is discharged from the isolation chamber 10 through the dirt discharge port 13 and collected in the recovery tank 40, for example.

[0031] After the wastewater in the isolation chamber 10 is almost completely discharged from the isolation chamber 10, the isolation valve 30 switches from an open state to a closed state under the action of the restoration structure 32, and the dirt discharge outlet 13 is blocked, preventing bad odors from entering the isolation chamber 10 through the dirt discharge outlet 13.

[0032] In some embodiments, as shown in Figures 1 to 5, the isolation valve 30 is pivotally connected to the edge of the dirt outlet 13 via a rotating shaft 33, and the restoring structure 32 includes a counterweight structure 321, and the counterweight structure 321 and the isolation valve body 31 are respectively provided on both sides of the rotating shaft 33, so that the isolation valve 30 has a tendency to be in a closed state.

[0033] Specifically, the counterweight structure 321 has a predetermined weight, and the counterweight structure 321 and the isolation valve body 31 form a lever structure relative to the rotation axis 33, so that under the gravitational force of the counterweight structure 321, the isolation valve 30 tends to close; that is, under normal conditions, the isolation valve 30 is in a closed state, and the isolation valve body 31 blocks the dirt discharge port 13.

[0034] In this case, when the cleaning device, for example, a floor cleaner, has not returned to the maintenance station, the isolation valve 30 is in a closed state under the gravitational force of the counterweight structure 321, and the isolation valve 30 blocks the dirt discharge outlet, preventing the foul odors and unpleasant smells generated in the recovery tank 40 from entering the isolation room 10 through the dirt discharge outlet 13 and spreading to the outside. When a cleaning device, such as a floor sweeper, returns to the maintenance station to collect wastewater, the wastewater inlet passage 11 of the isolation chamber 10 communicates with the wastewater tank of the cleaning device, and the wastewater suction fan 20, which communicates with the exhaust passage 12 of the isolation chamber 10, starts to operate, sucking in the gas in the isolation chamber 10 and creating negative pressure in the isolation chamber 10. Under the action of the negative pressure, the wastewater in the wastewater tank of the cleaning device is sucked into the isolation chamber 10, and the wastewater that flows into the isolation chamber 10 at this time is temporarily stored in the isolation chamber 10, and the isolation valve 30 overcomes the gravity of the wastewater temporarily stored in the isolation chamber 10 under the action of the negative pressure and the counterweight structure 321, and remains closed. After the wastewater from a cleaning device, such as a floor cleaner, is discharged into the isolation chamber 10 of the maintenance station 100 and temporarily stored therein, the wastewater suction fan 20 stops and the isolation valve 30 switches from closed to open under the action of the gravity of the wastewater, and the gravitational force on the wastewater temporarily stored in the isolation chamber 10 is significantly greater than the force of the counterweight structure 321, at which time the wastewater in the isolation chamber 10 is discharged from the isolation chamber 10 through the dirt discharge port 13 and collected, for example, in the recovery tank 40. After the wastewater in the isolation chamber 10 has been almost completely discharged from the isolation chamber 10, the isolation valve 30 switches from open to closed under the action of the gravity of the counterweight structure 321, blocking the dirt discharge port and preventing odors from entering the isolation chamber 10 through the dirt discharge port.

[0035] In some embodiments, the isolation valve is pivotally connected to the edge of the dirt outlet via a rotating shaft, and the restoring structure 32 has a spring structure and is provided on the rotating shaft 33, configured to bias the isolation valve 30 to a closed state.

[0036] Specifically, the spring structure is, for example, a leaf spring, a torsion spring, etc., and is configured so that the isolation valve 30 has a tendency to close under the elastic action of the spring structure; that is, in a normal state, the isolation valve 30 is in a closed state, and the isolation valve body 31 blocks the dirt discharge port 13.

[0037] In this case, when the cleaning device, for example, a floor cleaner, has not returned to the maintenance station, the isolation valve 30 is in a closed state under the elastic action of the spring structure, and the isolation valve 30 blocks the dirt discharge outlet, preventing the bad smells and unpleasant odors generated in the recovery tank 40 from flowing into the isolation room 10 through the dirt discharge outlet 13 and diffusing to the outside. When a cleaning device, such as a floor sweeper, returns to the maintenance station to collect wastewater, the wastewater inlet passage 11 of the isolation chamber 10 communicates with the wastewater tank of the cleaning device, and the wastewater suction fan 20, which communicates with the exhaust passage 12 of the isolation chamber 10, starts to operate, sucking in the gas in the isolation chamber 10 and creating negative pressure in the isolation chamber 10. Under the action of the negative pressure, the wastewater in the wastewater tank of the cleaning device is sucked into the isolation chamber 10, and at this time, the wastewater that flows into the isolation chamber 10 is temporarily stored in the isolation chamber 10, and the isolation valve 30 overcomes the gravity of the wastewater temporarily stored in the isolation chamber 10 under the negative pressure and the elastic action of the spring structure, and remains closed. After the wastewater from a cleaning device, such as a floor cleaner, is discharged into the isolation chamber 10 of the maintenance station 100 and temporarily stored therein, the wastewater suction fan 20 stops and the isolation valve 30 switches from closed to open under the action of the gravity of the wastewater, and the gravitational force of the wastewater temporarily stored in the isolation chamber 10 is significantly greater than the action of the spring structure, at this time the wastewater in the isolation chamber 10 is discharged from the isolation chamber 10 through the dirt discharge port 13 and collected, for example, in the recovery tank 40. After the wastewater in the isolation chamber 10 has been almost completely discharged from the isolation chamber 10, the isolation valve 30 switches from open to closed under the elastic force of the spring structure, blocking the dirt discharge port and preventing bad odors from entering the isolation chamber 10 through the dirt discharge port.

[0038] In some embodiments, a sealing soft rubber 131 is provided on the edge of the dirt outlet 13 to prevent odors from entering the isolation chamber through the dirt outlet 13 when the isolation valve 30 is closed. For example, when the isolation valve 30 is closed, the isolation chamber 10 and the recovery tank 40 are in a sealed and isolated state, preventing odors in the recovery tank 40 from entering the isolation chamber 10 and diffusing to the outside.

[0039] This ensures that bad odors do not enter the isolation room 10, maintains the gas quality in the isolation room 10, and when the maintenance station 100 performs sewage operations and starts the fan, the gas in the isolation room 10 is exhausted to the outside by the sewage suction fan, preventing the spread of bad odors.

[0040] 1 to 5, in some embodiments, the outlet 111 of the sewage inlet passage 11 and the inlet 121 of the exhaust passage 12 are located at the top of the isolation chamber 10, and the dirt discharge port 13 is located at the bottom of the isolation chamber. Specifically, the sewage inlet passage 11 and the exhaust passage 12 in the isolation chamber 10 are arranged parallel to each other in a substantially vertical direction, and the outlet 111 of the sewage inlet passage 11 is located at the top of the isolation chamber 10, for example, near the top of the isolation chamber 10, thereby allowing sewage temporarily stored in the isolation chamber 10 to flow back into the sewage inlet passage 11 and preventing sewage leakage and backflow to the cleaning device. The inlet 121 of the exhaust passage 12 is also located at the top of the isolation chamber 10, for example, near the top of the isolation chamber 10, thereby preventing sewage temporarily stored in the isolation chamber 10 from entering the exhaust passage 12 and damaging the dirt discharge fan 20.

[0041] In some embodiments, the outlet 111 of the wastewater inlet passage 11 and the inlet 121 of the exhaust passage 12 are spaced apart by a predetermined distance. This provides sufficient conditions for the wastewater discharged from the outlet 111 of the wastewater inlet passage 11 to fall completely into the isolation chamber 10 under the action of its own weight during the operation process in which the maintenance station starts the dirt discharge fan 20 to collect wastewater, thereby preventing the wastewater discharged from the outlet 111 of the wastewater inlet passage 11 from being directly sucked into the exhaust passage 12 and damaging the dirt discharge fan 20.

[0042] In some embodiments, isolation valve 30 may be, for example, an electrically controlled valve, capable of being opened or closed by a control signal.

[0043] When there is no wastewater in the isolation room 10 and the wastewater suction fan 20 is not working, and the maintenance station 100 performs the wastewater recovery operation and the wastewater suction fan 20 operates, the isolation valve 30 is in a closed state, and when the maintenance station 100 performs the wastewater recovery operation and the wastewater suction fan 20 stops, the isolation valve 30 receives an open control signal and switches from a closed state to an open state, and the wastewater in the isolation room 10 is discharged from the wastewater discharge outlet.

[0044] In some embodiments, the maintenance station 100 includes a processor, and in response to the wastewater suction fan 20 being closed, the processor in the maintenance station 100 sends an open control signal to the isolation valve 30 .

[0045] In some embodiments, after the dirty water in the isolation chamber 10 is discharged through the dirty outlet, the isolation valve 30 receives a close control signal to switch from an open state to a closed state.

[0046] In some embodiments, in response to a predetermined time having elapsed since the wastewater suction fan 20 was closed, the processor in the maintenance station 100 sends a close control signal to the isolation valve 30. The predetermined time is set according to the time required to drain the wastewater from the isolation room 10.

[0047] In some embodiments, the isolation chamber 10 includes a liquid level detection device, such as a float, an electrode, a capacitor, or a Hall element, and when the liquid level detection device detects that there is no liquid in the isolation chamber 10, a processor in the maintenance station 100 sends a close control signal to the isolation valve 30.

[0048] Specifically, when the cleaning device, such as a floor sweeper, has not returned to the maintenance station, the isolation valve 30 is in a closed state and blocks the dirt discharge port 13, preventing the foul odors and unpleasant smells generated in the recovery tank 40 from entering the isolation chamber 10 through the dirt discharge port 13 and spreading to the outside. When the cleaning device, such as a floor sweeper, returns to the maintenance station to collect wastewater, the wastewater inlet passage 11 of the isolation chamber 10 communicates with the wastewater tank of the cleaning device, and the wastewater suction fan 20, which communicates with the exhaust passage 12 of the isolation chamber 10, starts to operate, sucking in gas from the isolation chamber 10 and creating negative pressure in the isolation chamber 10. Under the action of the negative pressure, the wastewater in the wastewater tank of the cleaning device is sucked into the isolation chamber 10, and the wastewater that flows into the isolation chamber 10 is temporarily stored in the isolation chamber 10, and the isolation valve 30 remains closed. After the wastewater from a cleaning device, such as a floor cleaner, is discharged into the isolation chamber 10 of the maintenance station 100 and temporarily stored therein, the wastewater suction fan 20 stops, and the isolation valve 30 receives an open control signal and switches from a closed state to an open state, so that the gravitational force of the wastewater temporarily stored in the isolation chamber 10 is significantly greater than the force of the counterweight structure 321, and the wastewater in the isolation chamber 10 is discharged from the isolation chamber 10 through the dirt discharge port 13 and collected, for example, in the recovery tank 40. After the wastewater in the isolation chamber 10 has been almost completely discharged from the isolation chamber 10, the isolation valve 30 receives a close control signal and switches from an open state to a closed state, so that the dirt discharge port is blocked and odors are prevented from entering the isolation chamber 10 through the dirt discharge port.

[0049] In some embodiments, the maintenance station further comprises a detection element, which, as shown in FIG. 6 , is provided at any position of the recovery tank 40 or isolation chamber 10 of the maintenance station, for example, at the bottom or side wall of the isolation chamber 10, and is used to detect whether the recovery tank 40 and / or isolation chamber 10 have been assembled to the maintenance station. If the recovery tank 40 and / or isolation chamber 10 have not been assembled to the maintenance station, an alarm signal is sent to prompt the user to assemble the recovery tank 40 and / or isolation chamber 10, preventing the maintenance station from being contaminated after the wastewater has been sucked out. The detection element is also used to detect the position of the wastewater in the recovery tank 40, for example, an alarm signal is not sent before the wastewater in the recovery tank starts to rise and reaches the maximum water level, and an alarm signal is sent after the wastewater in the wastewater tank starts to rise and reaches the maximum water level, indicating that the wastewater tank is full and prompting the user to dispose of the wastewater in the recovery tank. The detection element can be any sensor capable of detecting position, such as a Hall element, an NFC element, etc., and as an example, the detection element includes a wastewater float 50, which is provided at the bottom of the isolation chamber 10, i.e., at the highest liquid level that can be contained in the recovery tank 40, and is configured to detect whether the isolation chamber 10 and / or the recovery tank 40 are located in a predetermined position and / or whether the recovery tank 40 is full.

[0050] Specifically, the isolation chamber 10 cannot be assembled independently but must be assembled in conjunction with the recovery tank 40, so the installation status information of the isolation chamber and the recovery tank can be detected simultaneously. When the isolation chamber 10 and / or the recovery tank 40 are not assembled at the maintenance station, the detection element cannot detect the wastewater float 50 and sends an alarm signal. When the isolation chamber 10 and the recovery tank 40 are assembled at the maintenance station and wastewater is being recovered, the recovery tank 40 is empty and the wastewater float is at its lowest position, and the detection element can detect the position of the wastewater float. When the water level in the recovery tank 40 rises and the recovery tank 40 becomes full, the detection element cannot detect the wastewater float and outputs an alarm. Different states corresponding to different position information of the detection element can be set according to actual needs. For example, if it is only necessary to detect whether the wastewater tank is full, a detection signal can be set to be generated when the wastewater float is at the highest water level.

[0051] Some embodiments of the present disclosure provide a cleaning system including the maintenance station and a cleaning device, such as a floor cleaner, described in the above embodiments.

[0052] Some embodiments of the present disclosure provide a valve device 60. FIG. 7 is a schematic diagram showing the three-dimensional structure of a valve device provided by an embodiment of the present disclosure. As shown in FIG. 7, the valve device 60 is installed in the fluid passage of a power source, such as a sewage suction fan 20. The power source provides power for opening and closing the valve device, and includes, but is not limited to, various fans, motors, etc., and the valve device 60 is used to open and close the fluid passage. Specifically, the valve device 60 includes a drive device 61. The drive device 61 is used to provide a driving force. For example, the drive device 61 is used to provide a driving force for reciprocating rotation within a range of at least 180 degrees. The drive device 61 realizes reciprocating rotation under the control of a processor, and can realize reciprocating rotation at any angle within a range of 0 to 180 degrees under the control of the processor. The valve device 60 further includes a valve body 62, the valve body 62 is connected to the drive device 61, the valve body 62 is configured to switch between a first position and a second position under the drive of the drive device 61, the valve body 62 closes the fluid passage when the valve body 62 is in the first position, and the valve body 62 opens the fluid passage when the valve body 62 is in the second position, and includes a maintaining structure configured to maintain the valve body 60 in the first position or the second position.

[0053] FIG. 8 is a structural schematic diagram of a valve device provided by an embodiment of the present disclosure in a closed state, and FIG. 9 is a structural schematic diagram of a valve device provided by an embodiment of the present disclosure in an open state. Under the driving of a driving device 61, a valve body 62 switches between a first position and a second position. When the valve body 62 is in the first position, the valve body 62 closes the fluid passage, and when the valve body 62 is in the second position, the valve body 62 opens the fluid passage. Normally, when the valve device 60 closes the fluid passage, it corresponds to closing the power source, and when the valve device 60 opens the fluid passage, it corresponds to opening the power source. Specifically, in response to a close signal from a power source, such as the sewage suction fan 20, the drive device 61 drives the valve body 62 to a first position to close the fluid passage, preventing leakage from the valve device 60 from reducing the negative pressure suction force generated on the brush side when the cleaning device fan is suctioning, when the cleaning device is in a mode where it is self-cleaning or where the cleaning device side fan is operating. In response to an open signal from a power source, such as the sewage suction fan 20, the drive device 61 drives the valve body 62 to a second position to open the fluid passage, thereby starting the sewage recovery function.

[0054] In some embodiments, the valve device can be opened or closed before or after the power source is opened or closed, or the valve device and the power source can be controlled to operate simultaneously. Specifically, before / after / simultaneously with the power source, such as a sewage suction fan, stopping, the driver 61 drives the valve body 62 to a first position to close the fluid passage, immediately closing the fluid passage and preventing leakage, and / or before / after / simultaneously with the power source, such as a sewage suction fan, starting, the driver 61 drives the valve body 62 to a second position to open the fluid passage, immediately opening the fluid passage and ensuring smooth gas passage.

[0055] In some embodiments, as shown in FIGS. 7 to 9 , the valve device 60 further includes a valve shaft 621, which is a hollow structure, such as a hollow cylindrical structure or a hollow prismatic structure, such as a triangular prism or a square prism, and is fitted onto the output shaft 611 of the drive device 61. In order to minimize the rotational clearance between the valve shaft 621 and the output shaft 611, the valve shaft 621 is preferably a hollow prismatic structure, so that the valve shaft 621 can switch the valve body 62 between a first position and a second position by rotating the drive device 61. Optionally, the valve shaft 621 and the valve body 62 can be integrally molded, which can further reduce the rotational clearance between the valve shaft 621 and the valve body 62. In some embodiments, a locking structure is provided at one end of the valve shaft 621 near the drive unit 61 to lock with the end of the output shaft 611, so that the locking can be achieved when the valve shaft 621 is sleeved onto the output shaft 611, thereby further reducing the rotational clearance between the valve shaft 621 and the output shaft 611.

[0056] In some embodiments, the valve device 60 further includes a chamber 64, the chamber 64 being composed of four side walls, a top plate, and a bottom plate, the chamber 64 having sufficient storage space to accommodate the valve body 62, and the chamber 64 being configured to provide sufficient storage space when the valve body 62 is switched between the first position and the second position, i.e., the depth of the chamber 64 is at least greater than the length of the valve body 62, and the length of the chamber 64 is at least twice the length of the valve body 62. In some embodiments, the chamber 64 has a first opening and a second opening, the first opening and the second opening are configured to communicate with the fluid passage, the valve body blocks the first opening or the second opening, the first opening being, for example, an air duct opening, located at the top of the chamber, the air duct opening communicating with the air passage, and the valve body 62 blocks the air duct opening when the valve body 62 is in the first position. The chamber 64 further has a second opening, for example a fan opening, which is located at the bottom of the chamber and is fluidly connected to the sewage suction fan 20. When the sewage suction fan 20 is started, the valve body 62 is opened and the suction airflow enters the sewage suction fan 20 through the air duct opening, the chamber 64 and the fan opening.

[0057] In some embodiments, as shown in Figures 7 to 9, the drive unit 61 is provided outside the chamber 64, and the output shaft 611 of the drive unit 61 penetrates the side wall of the chamber 64, extends into the chamber 64, and is connected to the valve rotation shaft 621, and the root portion of the output shaft 611 is engaged with the side wall of the chamber 64.

[0058] In some embodiments, as shown in FIG. 7, the retaining structure includes a support member 63, which is fixed at a position higher than the valve body 62, for example, fixed to the top plate of the chamber 64, and may be approximately above the valve rotation axis 621, thereby generating a vertical tension force. The support member 63 may be, for example, but not limited to, a fixed rod, a protrusion, a clip, etc.

[0059] In some embodiments, due to the inherent rotational clearance problem of the actuator 61, the valve body 62 may not be able to seal the air duct opening in the first position or to be able to closely contact the top of the chamber in the second position, which may affect the overall dirt discharge efficiency. Therefore, the valve device 60 further includes an elastic member 65, one end of which is connected to the support member 63 and the other end of which is connected to the valve body 62. As the actuator 61 rotates, the valve body 62 switches between the first and second positions, applying a tensile force to the valve body toward the first or second position, thereby enabling the valve body 62 to seal the air duct opening in the first position and to be able to closely contact the top of the chamber in the second position. For example, the other end of the elastic member 65 is connected to a fixing portion protruding from the valve body 62, which is substantially in the same vertical plane as the supporting member 63. As a result, the elastic member mainly provides tensile force in the vertical plane and does not exert lateral tensile force, thereby reducing tensile force loss. The elastic member 65 may be a spring, tension spring, elastic rope, leaf spring, etc.

[0060] The provision of the maintenance structure prevents the valve body 62 from falling downward due to gravity, preventing the valve body 62 from sealing the air duct opening and preventing it from being unable to fit tightly against the top of the chamber in the second position. The drive unit 61 continues to output driving force to keep the valve body 62 sealing the air duct opening or fitting tightly against the top of the chamber in the second position, thereby avoiding the problem of the gearbox of the drive unit 61 sticking.

[0061] In some embodiments, as shown in FIG. 7 , an edge protrusion is provided on the side of the valve body 62 facing the air passage, the edge protrusion is configured to extend into the air passage and seal the air passage opening when the valve body closes the air passage, the edge protrusion is provided around the periphery of the valve body 62, and optionally the edge protrusion and the valve body 62 are integrally molded.

[0062] In some embodiments, a soft sealing rubber is provided around the outer edge of the valve body 62, the soft sealing rubber being configured to further seal the air passage when the valve body 62 closes the air passage, and the soft sealing rubber is provided around the outer edge of the valve body 62.

[0063] Some embodiments of the present disclosure provide a maintenance station, which includes a valve device according to any one of the preceding embodiments. After a cleaning device is connected to the maintenance station, the valve device of the maintenance station is opened and the wastewater suction fan is simultaneously controlled to start, so that the wastewater in the wastewater tank of the cleaning device begins to be sucked into the recovery tank of the maintenance station. After the suction is completed, the wastewater suction fan is stopped and the valve device is closed, so as to prevent a decrease in the negative pressure suction force generated in the dirt suction passage between the brush and the wastewater tank when the fan on the cleaning device side sucks due to gas leakage from the valve device when the cleaning device is in a working mode such as self-cleaning.

[0064] The valve device provided in the embodiment of the present disclosure is installed in the air passage of the sewage suction fan, and is used to switch between a first position and a second position to open and close the air passage. When the sewage suction fan sucks in sewage, a suction passage is provided, and when the cleaning device washes the roller brush when the sewage suction fan stops, gas leakage from the valve device prevents a decrease in the suction force of the roller brush when the cleaning device fan sucks in.

[0065] Some embodiments of the present disclosure provide a wastewater tank self-cleaning system, as shown in FIG. 10 , some embodiments of the present disclosure provide a surface cleaning apparatus including a comprehensive wastewater tank 200, the wastewater tank 200 collecting wastewater recovered from a surface to be cleaned, the wastewater tank 200 having a wastewater inlet 210 configured to allow the wastewater to flow into the wastewater tank 200 along a wastewater line 220 after being recovered from the surface to be cleaned, the wastewater line 220 The brush part of the cleaning device is connected to the wastewater tank 200, and the surface cleaning device includes a first fan 310, which is installed above the cleaning device, for example, the wastewater tank 200. When the cleaning device performs a cleaning task, under the suction action of the first fan 310, negative pressure is generated in the wastewater tank 200, and the wastewater is driven by the roller brush to flow into the inlet of the wastewater pipe 220, and then flows upward along the wastewater pipe 220 through the wastewater inlet 210 into the wastewater tank 200. The wastewater tank 200 further has a first opening 230, which is located approximately at the bottom of the wastewater tank 200, for example, on the side wall of the bottom surface of the wastewater tank 200 or adjacent to the bottom surface. When the cleaning device executes a wastewater tank self-cleaning command, airflow flows into the wastewater tank 200 from the first opening 230 to vibrate the wastewater in the wastewater tank 200, for example, to form a boiling state, and the inner side wall of the wastewater tank 200 realizes self-cleaning through the vibration of the wastewater.

[0066] In some embodiments, the first opening 230 has a dirt outlet, which is used to discharge wastewater from the wastewater tank 200. In this case, the dirt outlet is located at the bottom of the wastewater tank 200 and is designed to discharge the wastewater from the wastewater tank as completely as possible. In this embodiment, when the cleaning device executes a self-cleaning command, the dirt outlet is also used to self-clean the wastewater tank. Specifically, under the action of a fan, airflow flows from the outside of the wastewater tank 200 into the inside of the wastewater tank 200 through the dirt outlet. Since there is wastewater inside the wastewater tank 200, the airflow blows on the wastewater, causing it to swell and vibrate in a boiling state. As a result, the vibration of the wastewater washes the inner sidewall of the wastewater tank 200, thereby achieving self-cleaning. In theory, the stronger the airflow, the better the cleaning effect.

[0067] In some embodiments, as shown in FIG. 11 , the surface cleaning apparatus further includes a first conduit 240, which connects the first opening 230 to an external environment, and through which external airflow enters the wastewater tank 200, and optionally, the first conduit 240 has an inner diameter equal to or smaller than the first opening 230.

[0068] In some embodiments, the first pipeline 240 has an inverted U-shaped structure. As shown in FIG. 11, the first pipeline 240 extends to one side of the wastewater tank 200, extends downward from the top of the wastewater tank 200 to the bottom of the wastewater tank, and then bends upward to form a first opening 230, i.e., a dirt discharge outlet. The dirt discharge outlet is formed at the bottom of the wastewater tank, which is convenient for wastewater to flow when discharging dirt. The first pipeline 240 is less likely to leak wastewater from the wastewater tank due to the bent portion at the top of the wastewater tank 200, and there is no need to install a valve structure at the interface between the first pipeline 240 and the outside.

[0069] In some embodiments, the surface cleaning apparatus further includes a check valve 250 configured to seal a second conduit 610 connected to the first conduit 240. The check valve 250 is disposed at the airflow inlet end of the first conduit 240, and the outlet end of the second conduit 610 passes through the check valve 250 a predetermined distance before connecting to the first conduit 240. Specifically, as shown in FIG. 12 , the check valve 250 comprises a first end 251, a second end 252, and a middle portion 253, the first end 251 and the second end 252 having a circular structure with a diameter corresponding to the inner diameter of the first conduit 240, and the first end 251 and the second end 252 being made of a hard material to form a support space into which the second conduit 610 can be inserted. The intermediate portion 253 is made of a deformable material and forms a contracted state in which it closes inward when not in use. When the second conduit 610 is inserted into the stop valve 250, the intermediate portion 253 expands and the second conduit 610 passes through the stop valve 250 and then communicates with the first conduit 240.

[0070] In some embodiments, a valve device 60 is provided in the airflow passage, and the airflow passage has at least a passage for flowing from outside the wastewater tank 200 through the first opening 230 into the wastewater tank, and the valve device 60 is provided at any position outside the wastewater tank 200, for example on the maintenance station side, and controls the airflow so that it flows into the wastewater tank 200 after flowing in from the maintenance station side, and the valve device 60 is configured to open when a wastewater tank self-cleaning command is executed, and the airflow flows into the wastewater tank 200 from the first opening 230.

[0071] In some embodiments, the surface cleaning apparatus further includes a first fan 310 configured to provide power for airflow into the wastewater tank through the first opening 230 in response to a wastewater tank self-cleaning command. The first fan 310 is installed at any position of the surface cleaning apparatus, for example, above or to the side of the wastewater tank 200, and the first fan 310 suctions gas within the wastewater tank 200 to create negative pressure within the wastewater tank 200, causing airflow outside the wastewater tank 200 to flow into the wastewater tank 200. Note that during this process, the first fan 310 is essentially located downstream of the first opening 230 in the airflow path, and the airflow path is such that the air flows from outside the wastewater tank 200 through the first opening 230 into the wastewater tank 200 and then is discharged from the first fan 310.

[0072] In some embodiments, the surface cleaning apparatus further includes a first fan 310, and the power for the airflow is provided by a second fan 620. The second fan 620 may be located anywhere other than the first fan 310, and is not specifically limited in this regard.

[0073] In some embodiments, the second fan 620 is located upstream of the first opening 230 in the airflow path, and the airflow path flows from outside the wastewater tank 200 through the first opening 230 into the wastewater tank 200, and at this time, the second fan 620 provides power to blow the airflow into the first opening 230.

[0074] In some embodiments, the second fan 620 is located outside the surface cleaning device, for example, in a maintenance station that is docked with the surface cleaning device. As shown in Figure 10, when the dirty water tank is self-cleaning, the second fan 620 is activated, and airflow enters through the air inlet on the second fan 620 side of the maintenance station, travels along the second duct 610 in the maintenance station, enters the first duct 240 of the cleaning device, and then reaches the first opening 230. After entering through the first opening 230, the airflow is blown onto the dirty water in the dirty water tank, vibrating the dirty water and flushing the dirty water tank.

[0075] Specifically, as shown in FIGS. 10 and 11, in this embodiment, the self-cleaning loop includes an internal cavity of the wastewater tank 200 and a first pipe 240 communicating with the internal cavity of the wastewater tank 200, one end of the first pipe 240 communicating with a first opening 230, which is located at the bottom of the wastewater tank, the other end of the first pipe 240 communicating with a second pipe 610 on the maintenance station side, the outlet of the second pipe 610 sealingly communicating with the inlet of the first pipe 240, and a second fan 620 (the wastewater suction fan 20 described in the above embodiments) is installed on the inlet side close to the second pipeline 610 of the maintenance station, and when a wastewater tank self-cleaning command is executed, the second fan 620 rotates, and airflow enters from the inlet of the second pipeline 610, is discharged from the first opening 230, and is then blown from bottom to top onto the wastewater in the wastewater tank, causing the wastewater to surge due to the blowing vibration of the airflow, and the wastewater tank achieves self-cleaning through the vibration of the wastewater.

[0076] In some embodiments, the self-cleaning loop further includes a valve device 60, which is located on a side of the maintenance station closer to the second fan 620. The valve device 60 is opened when the second fan 620 executes the wastewater tank self-cleaning command, and closed after the second fan 620 executes the wastewater tank self-cleaning command. The specific structure and opening / closing method of the valve device 60 may be referred to in some embodiments and will not be described again here.

[0077] In some embodiments, the self-cleaning loop further includes an isolation chamber 10, which is located above the second fan 620. As shown in FIG. 10 , the second duct 610 includes a second duct-1 12 (corresponding to the exhaust passage in the previous embodiment) located on the side closer to the second fan 620 and extending vertically from the second fan 620 to the top of the isolation chamber 10, and a second duct-2 11 (corresponding to the wastewater inlet passage in the previous embodiment) located on the side closer to the cleaning device and extending downward from approximately the top of the isolation chamber 10 to a position where it docks with the first duct. In some embodiments, the second duct-2 11 has a regular U-shaped structure to prevent wastewater from flowing back into the wastewater tank. The second duct-1 12 and the second duct-2 11 are connected via the isolation chamber. The specific structure of the isolation chamber can be referred to the above embodiments and will not be described again here.

[0078] An embodiment of the present disclosure provides a method for self-cleaning a wastewater tank, which is realized by the structure described in the above embodiment, and the specific structure will not be described repeatedly. The self-cleaning method for a wastewater tank comprises: in response to a self-cleaning command for a wastewater tank, an airflow enters the wastewater tank from a first opening at the bottom of the wastewater tank, vibrates the wastewater in the wastewater tank to cause surging, and the wastewater tank achieves self-cleaning through the vibration of the wastewater.

[0079] In some embodiments, the method further includes, after responding to the wastewater tank self-cleaning command, opening the valve device so that the interior cavity of the wastewater tank communicates with the outside through the first opening and allowing outside airflow into the wastewater tank through the valve device and the first opening.

[0080] In some embodiments, the method closes the valve device after completing the wastewater tank self-cleaning task, preventing the wastewater tank interior cavity from communicating with the outside through the first opening, thereby preventing gas leakage through the first opening, which is not passed through by the fan in the surface cleaning device during normal operation, maintaining sufficient negative pressure in the recovery fluid passage on the cleaning device side, and preventing gas leakage from reducing the suction force on the brush roller brush side and affecting the efficiency and effectiveness of the normal cleaning or self-cleaning task.

[0081] In some embodiments, in response to the wastewater tank self-cleaning command, an airflow enters the wastewater tank from a first opening of the wastewater tank and vibrates the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning by vibrating the wastewater, including starting a first fan in response to the wastewater tank self-cleaning command, causing an airflow to enter the wastewater tank from the first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning by vibrating the wastewater, wherein the first fan is provided in the cleaning device, and optionally the first fan is provided above or on the side of the wastewater tank, and provides suction force to the wastewater tank to create negative pressure in the wastewater tank, making it easier for external airflow to flow into the wastewater tank from the first opening.

[0082] In some embodiments, in response to the wastewater tank self-cleaning command, an airflow enters the wastewater tank from a first opening of the wastewater tank and vibrates the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning by vibrating the wastewater, including starting a first fan in response to the wastewater tank self-cleaning command, and an airflow enters the wastewater tank from the first opening of the wastewater tank and vibrates the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning by vibrating the wastewater, wherein the first fan is located downstream of the first opening in an airflow path, and the airflow path is such that the airflow passes from outside the wastewater tank through the first opening, enters the wastewater tank, and is then discharged from the first fan.

[0083] In some embodiments, in response to the wastewater tank self-cleaning command, causing an airflow to enter the wastewater tank through a first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, so that the wastewater tank achieves self-cleaning by vibrating the wastewater, includes: in response to the wastewater tank self-cleaning command, activating a valve device to cause an airflow to enter the wastewater tank through the first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, so that the wastewater tank achieves self-cleaning by vibrating the wastewater. Specifically, for example, while the cleaning device is performing roller brush self-cleaning, the valve device is activated to cause an airflow to enter the wastewater tank through the first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, so that the wastewater tank achieves self-cleaning by vibrating the wastewater, i.e., the cleaning device is in a state of simultaneously performing roller brush self-cleaning and wastewater tank self-cleaning.

[0084] In some embodiments, in response to the wastewater tank self-cleaning command, an airflow enters the wastewater tank through a first opening of the wastewater tank and vibrates the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning by vibrating the wastewater, including starting a second fan in response to the wastewater tank self-cleaning command, causing an airflow to enter the wastewater tank through the first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning by vibrating the wastewater, wherein the second fan is located upstream of the first opening in the airflow path, and the airflow path flows from outside the wastewater tank through the first opening into the wastewater tank, and optionally the second fan can be located on either the cleaning device side or outside the cleaning device.

[0085] In some embodiments, in response to the wastewater tank self-cleaning command, an airflow enters the wastewater tank from a first opening of the wastewater tank and vibrates the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning by vibrating the wastewater, includes in response to the wastewater tank self-cleaning command, starting a second fan, and an airflow enters the wastewater tank from the first opening of the wastewater tank and vibrates the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning by vibrating the wastewater, and the second fan is provided in a maintenance station docked with the cleaning device.

[0086] In the surface cleaning device, cleaning system, and wastewater tank self-cleaning method provided by the present disclosure, when the cleaning device is located at a maintenance station, in response to a wastewater tank self-cleaning command, an airflow enters the wastewater tank through a first opening of the wastewater tank, vibrating the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning through the vibration of the wastewater.

[0087] In related art, when a maintenance station sucks up dirty water, water vapor is discharged outside the maintenance station, causing environmental pollution. Therefore, the present application further provides a maintenance station that can properly guide the liquid in the water vapor so that it can be discharged outside the maintenance station, avoiding causing environmental pollution.

[0088] As shown in FIGS. 13 to 17, some embodiments of the present disclosure provide a maintenance station for a cleaning device, the maintenance station including a dirty water suction fan 20, the dirty water suction fan 20 having an air inlet 21 and an air outlet 22, the maintenance station further including a storage chamber 400 for storing a recovery tank, the storage chamber 400 having an air vent 410, the air vent 410 being disposed corresponding to the air outlet 22 of the dirty water suction fan 20, and the water vapor-containing airflow is discharged from the air outlet 22 and then discharged through the air vent 410. 0 into the storage chamber 400, in some embodiments, the bottom of the storage chamber 400 has a sloped structure, and a water outlet 420 is provided at the lowest end of the sloped structure of the bottom of the storage chamber 400, and water vapor condenses into liquid inside the storage chamber 400 and then flows out of the storage chamber 400 through the water outlet 420, in some embodiments, the maintenance station includes a tray 500 for storing the cleaning device, the tray 500 has a tray outlet 430, and liquid flows into the tray 500 through the tray outlet 430 after flowing in through the water outlet 420. In some embodiments, the tray 500 includes an upper tray 510 and a lower tray 520, the upper tray 510 having a liquid leak port 511, through which liquid reaches the upper tray 510 and flows into the lower tray 520, the liquid leak port 511 may be a dedicated opening or may be an opening shared with other functions, such as a dry air outlet during the tray drying process, where liquid that has entered the upper tray 510 and not been absorbed by the roller brush flows into the lower tray 520 through the dry air outlet, i.e., the liquid leak port 511. In some embodiments, the maintenance station includes a tray float 530, which is disposed between the upper tray 510 and the lower tray 520, and when the flow rate of liquid flowing into the lower tray 520 increases, the tray float 530 floats and generates an alarm signal.

[0089] In some embodiments, as shown in FIG. 17, the tray float 530 includes a float connecting end 531, a float body 532, and a float detecting end 533, the float connecting end 531 is fixed to the positioning post of the tray lower layer 520, and the float detecting end 533 is a free end. When the flow rate of the tray lower layer 520 increases, the float body 532 gradually rises. Since the distance between the float body 532 and the float connecting end 531 is shorter than the distance between the float detecting end 533 and the float connecting end 531, after the float body 532 rises a certain distance, the float detecting end 533 rises a greater distance, so that the float detecting end 533 can be easily detected by the detecting element. That is, the lever structure can further amplify the sensitivity of the tray float 530 to the detection signal.

[0090] Specifically, as shown in Figures 13 to 17, the maintenance station includes a wastewater suction fan 20, which has an air inlet 21 and an air outlet 22. The maintenance station further includes a storage chamber 400 for accommodating a recovery tank. The storage chamber 400 has an air vent 410, which is located corresponding to the air outlet 22 of the wastewater suction fan 20. Water vapor-containing air enters through the air inlet 21 of the wastewater suction fan 20, exits through the air outlet 22, and then enters the storage chamber 400 through the air vent 410. The bottom of the storage chamber 400 has a sloped structure, and a water outlet 420 is located at the lowest end of the sloped bottom structure of the storage chamber 400. Water vapor condenses into liquid inside the storage chamber 400 and flows along the sloped bottom to the water outlet 420. The water vapor then exits the storage chamber 400 through the water outlet 420 and flows downward through the tray outlet 430 and into the tray 500. As shown in FIG. 16, the tray 500 includes an upper tray layer 510 and a lower tray layer 520. After the liquid reaches the upper tray layer 510, it flows into the lower tray layer 520 through a liquid leakage port 511 in the upper tray layer 510. The lower tray layer 520 includes a tray float 530. When the flow rate into the lower tray layer 520 increases, the tray float 530 floats up and generates an alarm signal. After receiving the alarm signal, the user can clean up the liquid in the lower tray layer.

[0091] In some embodiments, as shown in FIG. 15 , a receiving groove 600 for receiving the sustained-release silver ion box is provided at the bottom of the recovery tank of the maintenance station, and the receiving groove has multiple locking structures. After the sustained-release silver ion box 630 is placed in the receiving groove 600, the sustained-release silver ion box 630 is locked by the multiple locking structures.

[0092] Some embodiments of the present disclosure provide a maintenance station for a cleaning device, the maintenance station comprising: an isolation chamber having a dirt outlet and configured to be operably connected to and in fluid communication with a wastewater tank of the cleaning device when the cleaning device returns to the maintenance station; and an isolation valve provided at the dirt discharge outlet and configured to switch between an open and closed state, wherein when the isolation valve is in an open state, the dirty water in the isolation chamber is discharged from the dirt discharge outlet, and when the isolation valve is in a closed state, the dirt discharge outlet is blocked.

[0093] Some embodiments of the present disclosure provide a maintenance station for a cleaning device, the maintenance station comprising: a charging interface configured to charge the cleaning device; an isolation chamber having a dirt outlet and configured to be operably connected to and in fluid communication with a wastewater tank of the cleaning device when the cleaning device returns to the maintenance station; and an isolation valve provided at the dirt discharge outlet and configured to switch between an open and closed state, wherein when the isolation valve is in an open state, the dirty water in the isolation chamber is discharged from the dirt discharge outlet, and when the isolation valve is in a closed state, the dirt discharge outlet is blocked.

[0094] In some embodiments, the isolation chamber has a wastewater inlet passageway and an exhaust passageway, the wastewater inlet passageway being operably configured to be in fluid communication with a wastewater tank of the cleaning apparatus; The maintenance station includes: The isolation chamber further includes a sewage suction fan communicating with the exhaust passage of the isolation chamber.

[0095] In some embodiments, when connected to the wastewater tank of the cleaning device, the isolation chamber has a lower elevation than the wastewater tank, so that wastewater from the wastewater tank flows into the isolation chamber under the action of gravity.

[0096] In some embodiments, the isolation valve comprises: an isolation valve body configured to block the dirt outlet; and a restoring structure configured to bias the isolation valve toward a closed state.

[0097] In some embodiments, the isolation valve is pivotally connected to an edge of the dirt outlet via a rotating shaft, the restoring structure includes a counterweight structure, and the counterweight structure and the isolation valve body are respectively provided on opposite sides of the rotating shaft and configured to bias the isolation valve toward a closed state.

[0098] In some embodiments, the isolation valve is pivotally connected to an edge of the dirt outlet via a rotating shaft, and the restoring structure includes a spring structure mounted on the rotating shaft and configured to bias the isolation valve toward a closed state.

[0099] In some embodiments, the dirt outlet edge is provided with a soft rubber seal, configured to prevent odours from entering the isolation chamber through the dirt outlet when the isolation valve is in a closed state.

[0100] In some embodiments, the maintenance station comprises: The system further comprises a recovery tank in selective fluid communication with the isolation chamber via the isolation valve and configured to contain wastewater discharged from the dirt outlet.

[0101] In some embodiments, the maintenance station comprises: The system further comprises a sewer line connected to the dirt outlet, and at least a portion of the isolation valve is provided in the sewer line.

[0102] In some embodiments, the outlet of the wastewater introduction passage and the inlet of the exhaust passage are located at the top of the isolation chamber, and the dirt discharge outlet is located at the bottom of the isolation chamber.

[0103] In some embodiments, the outlet of the wastewater introduction passage and the inlet of the exhaust passage are spaced apart by a predetermined distance.

[0104] In some embodiments, the isolation valve is an electrically controlled valve, and the isolation valve receives a control signal to switch between a closed state and an open state.

[0105] In some embodiments, after the dirty water in the isolation chamber is completely discharged through the dirty outlet, the isolation valve receives a close control signal to switch from an open state to a closed state.

[0106] Some embodiments of the present disclosure further provide a maintenance station for a cleaning device, the maintenance station comprising: a power source configured to provide dirt evacuation power; an isolation chamber operably configured to be in fluid communication with a wastewater tank of the cleaning device when the cleaning device returns to the maintenance station, the isolation chamber comprising: a dirt outlet configured to discharge dirty water from the isolation chamber; a wastewater introduction passage outlet in fluid communication with a wastewater tank of the cleaning device, the wastewater in the wastewater tank of the cleaning device configured to flow into the isolation chamber; an exhaust passage inlet communicating with the power source and configured to create a negative pressure in the isolation chamber under the suction action of the power source;

[0107] In some embodiments, the wastewater inlet passage outlet is an outlet formed by extending the wastewater inlet passage upward along the bottom of the isolation chamber, the exhaust passage inlet is an inlet formed by extending the exhaust passage upward along the bottom of the isolation chamber, and the wastewater inlet passage is approximately parallel to the exhaust passage.

[0108] In some embodiments, the outlet of the wastewater introduction passage and the inlet of the exhaust passage are located at the top of the isolation chamber, and the dirt discharge outlet is located at the bottom of the isolation chamber.

[0109] In some embodiments, the dirt outlet is located at the lowest point within the isolation chamber.

[0110] In some embodiments, the outlet of the wastewater introduction passage and the inlet of the exhaust passage are spaced apart by a predetermined distance.

[0111] In some embodiments, the maintenance station further comprises an isolation valve disposed at the dirt outlet and configured to switch between an open and an closed state.

[0112] In some embodiments, the dirt outlet edge is provided with a soft rubber seal, configured to prevent odours from entering the isolation chamber through the dirt outlet when the isolation valve is in a closed state.

[0113] In some embodiments, when connected to the recovery tank of the maintenance station, the isolation chamber is at a lower elevation than the wastewater tank, and wastewater from the wastewater tank flows into the isolation chamber under the action of gravity.

[0114] In some embodiments, the maintenance station further comprises a recovery tank in communication with the isolation chamber and configured to receive wastewater discharged from the isolation chamber.

[0115] In some embodiments, the maintenance station further comprises a sewer line connected to the dirt outlet, and at least a portion of the isolation valve is disposed in the sewer line.

[0116] Some embodiments of the present disclosure further provide a maintenance station for a cleaning device, the maintenance station comprising: a collection tank configured to contain the wastewater; an isolation chamber disposed within the recovery tank and configured to be in operable fluid communication with a wastewater tank of the cleaning device when the cleaning device returns to a maintenance station; and a float provided at the bottom of the isolation chamber and configured to detect whether the isolation chamber and / or recovery tank are in place and / or whether the recovery tank is full.

[0117] In some embodiments, in response to the float being in a first position, a presentation is generated, the presentation indicating at least one of: an isolation chamber is not in place; a recovery tank is not in place; and a recovery tank is full.

[0118] In some embodiments, the isolation chamber includes a dirt outlet and a sewer line connected to the dirt outlet, and is configured to discharge the wastewater from the dirt outlet and the sewer line into the recovery tank.

[0119] In some embodiments, the isolation chamber further includes an isolation valve, which is provided at the dirt discharge outlet and configured to switch between an open and closed state, and when the isolation valve is in an open state, the dirty water in the isolation chamber is discharged from the dirt discharge outlet, and when the isolation valve is in a closed state, the dirt discharge outlet is blocked.

[0120] In some embodiments, the isolation chamber has a wastewater inlet passageway and an exhaust passageway, the wastewater inlet passageway being operably configured to be in fluid communication with a wastewater tank of the cleaning apparatus; The maintenance station further comprises a power source configured to communicate with an exhaust passageway of the isolation chamber.

[0121] In some embodiments, when connected to the recovery tank of the maintenance station, the isolation chamber is at a lower elevation than the wastewater tank, and wastewater from the wastewater tank flows into the isolation chamber under the action of gravity.

[0122] In some embodiments, the dirt outlet edge is provided with a soft rubber seal, configured to prevent odours from entering the isolation chamber through the dirt outlet when the isolation valve is in a closed state.

[0123] In some embodiments, the isolation valve is an electrically controlled valve, and the isolation valve is configured to receive a control signal to switch between a closed state and an open state.

[0124] In some embodiments, after the dirty water in the isolation chamber is completely discharged through the dirty outlet, the isolation valve receives a close control signal to switch from an open state to a closed state.

[0125] Some embodiments of the present disclosure provide a cleaning system including the maintenance station described in the embodiments.

[0126] Some embodiments of the present disclosure provide a valve device for application to a fluid passageway, comprising: a drive unit for providing a driving force; a valve body connected to the driver and configured to switch between a first position and a second position under the drive of the driver, such that when the valve body is in the first position, the valve body closes the fluid passage and when the valve body is in the second position, the valve body opens the fluid passage; and a retaining structure configured to retain the valve body in the first position or the second position.

[0127] In some embodiments, The valve further comprises a valve rotation shaft sleeved onto an output shaft of the drive device and configured to drive the valve body to switch between a first position and a second position under rotation of the drive device.

[0128] In some embodiments, the retaining structure comprises: a support member fixed at a position higher than the valve body; and an elastic member having one end connected to the support member and the other end connected to the valve body, the elastic member being configured to apply a tensile force to the valve body toward the first position or the second position as the drive device rotates.

[0129] In some embodiments, the valve body includes a lip projection on a side facing the fluid passage, the lip projection configured to extend into the fluid passage when the valve body closes the fluid passage.

[0130] In some embodiments, the valve body edge comprises a sealing soft rubber and is configured to seal the fluid passage when the valve body closes the fluid passage.

[0131] In some embodiments, The valve further includes a chamber configured to receive the valve body and provide a receiving space when the valve body switches between a first position and a second position.

[0132] In some embodiments, the chamber comprises: The valve body has a first opening and a second opening, the first opening and the second opening being configured to communicate with the fluid passage, and the valve body closes the first opening or the second opening.

[0133] In some embodiments, the driving force provided by the drive unit is a reciprocating driving force.

[0134] An embodiment of the present disclosure provides a maintenance station including any one of the valve devices described above.

[0135] In some embodiments, the valve device is disposed in the fluid passageway and is used to open and close the fluid passageway.

[0136] In some embodiments, The wastewater suction fan is further configured such that, in response to a close signal from the wastewater suction fan, the drive device drives the valve body to a first position to close the fluid passage, and / or, in response to an open signal from the wastewater suction fan, the drive device drives the valve body to a second position to open the fluid passage.

[0137] An embodiment of the present disclosure provides a surface cleaning device, a wastewater tank used to collect wastewater recovered from the surface to be cleaned; The wastewater tank is a wastewater inlet for allowing the wastewater to enter the wastewater tank; The first opening is configured so that, in response to a wastewater tank self-cleaning command, an airflow enters the wastewater tank through the first opening to vibrate the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning through the vibration of the wastewater.

[0138] An embodiment of the present disclosure provides a surface cleaning device, a cleaning fluid distribution system configured to distribute cleaning fluid to the cleaning member or the surface to be cleaned; a wastewater tank used to collect wastewater recovered from the surface to be cleaned; The wastewater tank is a wastewater inlet for allowing the wastewater to enter the wastewater tank; The first opening is configured so that, in response to a wastewater tank self-cleaning command, an airflow enters the wastewater tank through the first opening to vibrate the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning through the vibration of the wastewater.

[0139] In some embodiments, the first opening is located in the bottom of the wastewater tank.

[0140] In some embodiments, the first opening comprises a dirt outlet, the dirt outlet configured to drain dirty water within the dirty water tank.

[0141] In some embodiments, the surface cleaning device comprises: The system further includes a first conduit in communication with the first opening, the first conduit configured to allow airflow to enter the wastewater tank through the first conduit.

[0142] In some embodiments, the first conduit has an inverted U-shaped configuration.

[0143] In some embodiments, the surface cleaning device comprises: The system further includes a check valve configured to seal a second conduit connected to the first conduit.

[0144] In some embodiments, the valve arrangement is configured to activate, in response to a waste tank self-cleaning command, an airflow to enter the waste tank through the first opening.

[0145] In some embodiments, the surface cleaning device comprises: The system further includes a first fan for providing power to force airflow through the first opening into the wastewater tank.

[0146] In some embodiments, the surface cleaning apparatus further comprises a first fan; The power for the airflow is provided by a second fan.

[0147] In some embodiments, the second fan is provided in an airflow path and is located upstream of the first opening, and the airflow path flows from outside the wastewater tank through the first opening into the wastewater tank.

[0148] In some embodiments, the second fan is provided in a maintenance station that is docked with the cleaning device.

[0149] In some embodiments, the first fan is provided in an airflow path and located downstream of the first opening, and the airflow path enters the wastewater tank from outside the wastewater tank through the first opening and then exits the first fan.

[0150] An embodiment of the present disclosure provides a cleaning system including any of the above cleaning devices.

[0151] An embodiment of the present disclosure further provides a method for self-cleaning a wastewater tank, comprising: In response to a wastewater tank self-cleaning command, an airflow enters the wastewater tank through a first opening of the wastewater tank, vibrating the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning through the vibration of the wastewater.

[0152] In some embodiments, after responding to the waste tank self-cleaning command: The method further includes the step of activating a valve device to communicate the interior cavity of the wastewater tank with the outside through the first opening.

[0153] In some embodiments, The method further includes the step of closing the valve device after completing the wastewater tank self-cleaning task to prevent the wastewater tank internal cavity from communicating with the outside through the first opening.

[0154] In some embodiments, the step of, in response to the wastewater tank self-cleaning command, causing an airflow to enter the wastewater tank through a first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, and causing the wastewater tank to achieve self-cleaning by vibrating the wastewater, includes: In response to a wastewater tank self-cleaning command, a first fan is started, and an airflow enters the wastewater tank through a first opening of the wastewater tank, vibrating the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning through the vibration of the wastewater, and the first fan is provided in the cleaning device.

[0155] In some embodiments, the step of, in response to the wastewater tank self-cleaning command, causing an airflow to enter the wastewater tank through a first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, and causing the wastewater tank to achieve self-cleaning by vibrating the wastewater, includes: In response to a wastewater tank self-cleaning command, a first fan is started, and an airflow enters the wastewater tank through a first opening of the wastewater tank, vibrating the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning by vibrating the wastewater; The first fan is installed in the airflow path and is located downstream of the first opening, and the airflow path enters the wastewater tank from outside the wastewater tank through the first opening and then is discharged from the first fan.

[0156] In some embodiments, the step of, in response to the wastewater tank self-cleaning command, causing an airflow to enter the wastewater tank through a first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, and causing the wastewater tank to achieve self-cleaning by vibrating the wastewater, includes: In response to a wastewater tank self-cleaning command, a valve device is activated, and an airflow enters the wastewater tank through a first opening of the wastewater tank, vibrating the wastewater in the wastewater tank, and the wastewater tank achieves self-cleaning through the vibration of the wastewater.

[0157] In some embodiments, the step of, in response to the wastewater tank self-cleaning command, causing an airflow to enter the wastewater tank through a first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, and causing the wastewater tank to achieve self-cleaning by vibrating the wastewater, includes: In response to a wastewater tank self-cleaning command, a second fan is started, and an airflow enters the wastewater tank through a first opening of the wastewater tank, vibrating the wastewater in the wastewater tank, so that the wastewater tank achieves self-cleaning by vibrating the wastewater; The second fan is provided in an airflow path and is located upstream of the first opening, and the airflow path flows from outside the wastewater tank into the wastewater tank through the first opening.

[0158] In some embodiments, the step of, in response to the wastewater tank self-cleaning command, causing an airflow to enter the wastewater tank through a first opening of the wastewater tank and vibrate the wastewater in the wastewater tank, and causing the wastewater tank to achieve self-cleaning by vibrating the wastewater, includes: In response to a wastewater tank self-cleaning command, a second fan is started, and an airflow enters the wastewater tank through a first opening of the wastewater tank, vibrating the wastewater in the wastewater tank, so that the wastewater tank achieves self-cleaning by vibrating the wastewater; The second fan is provided in a maintenance station docked with the cleaning device.

[0159] Finally, it should be noted that the embodiments in this specification will be described step by step, each embodiment will focus on the differences from other embodiments, and the same or similar parts between the embodiments may be referred to. The systems or devices disclosed in the embodiments will be briefly described because they correspond to the methods disclosed in the embodiments, and the relevant parts may be referred to the description of the method parts.

[0160] The above examples are used to explain the technical solutions of the present disclosure, but are not intended to limit them. The present disclosure has been described in detail with reference to the above examples. However, those skilled in the art may still modify the technical solutions described in each of the above examples or substitute some of the technical features with equivalents, and it should be understood that these modifications and substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each of the embodiments of the present disclosure.

Claims

1. A maintenance station for a cleaning device, comprising: an isolation chamber having a dirt outlet and configured to be operably connected to and in fluid communication with a wastewater tank of the cleaning device when the cleaning device returns to the maintenance station; A maintenance station for a cleaning device, comprising: an isolation valve provided at the dirt discharge outlet and configured to switch between open and closed states, wherein when the isolation valve is in an open state, dirty water in the isolation chamber is discharged from the dirt discharge outlet, and when the isolation valve is in a closed state, the dirt discharge outlet is blocked.

2. the isolation chamber has a wastewater inlet passage and an exhaust passage, the wastewater inlet passage being operably configured to be in fluid communication with a wastewater tank of the cleaning apparatus; The maintenance station includes: The maintenance station of claim 1 , further comprising a wastewater suction fan communicating with an exhaust passage of the isolation chamber.

3. 2. The maintenance station according to claim 1, wherein when connected to the wastewater tank of the cleaning device, the isolation chamber has a lower positional height than the wastewater tank, and wastewater from the wastewater tank flows into the isolation chamber under the action of gravity.

4. The isolation valve is an isolation valve body for blocking the dirt outlet; 4. The maintenance station of claim 1, further comprising: a restoring structure configured to cause the isolation valve to have a tendency to close.

5. 5. The maintenance station of claim 4, wherein the isolation valve is pivotally connected to an edge of the dirt discharge outlet via a rotation shaft, the restoring structure includes a counterweight structure, the counterweight structure and the isolation valve body are respectively provided on opposite sides of the rotation shaft and configured to cause the isolation valve to have a tendency to close.

6. 5. The maintenance station of claim 4, wherein the isolation valve is pivotally connected to an edge of the dirt outlet via a rotating shaft, and the restoring structure includes a spring structure, the spring structure being provided on the rotating shaft and configured to bias the isolation valve toward a closed state.

7. A maintenance station as described in any one of claims 1 to 3, wherein the edge of the dirt outlet is provided with a sealing soft rubber to prevent malodors from entering the isolation chamber from the dirt outlet when the isolation valve is in a closed state.

8. The maintenance station includes: The maintenance station of any one of claims 1 to 3, further comprising a recovery tank selectively in fluid communication with the isolation chamber via the isolation valve and configured to store wastewater discharged from the dirt discharge outlet.

9. The maintenance station includes: The maintenance station of any one of claims 1 to 3, further comprising a sewer line connected to the dirt outlet, and at least a portion of the isolation valve is disposed in the sewer line.

10. 3. The maintenance station according to claim 2, wherein the outlet of the sewage introduction passage and the inlet of the exhaust passage are located at the top of the isolation chamber, and the dirt discharge port is located at the bottom of the isolation chamber.

11. 11. The maintenance station according to claim 10, wherein the outlet of the wastewater introduction passage and the inlet of the exhaust passage are spaced a predetermined distance apart.

12. 4. The maintenance station of claim 1, wherein the isolation valve is an electrically controlled valve, and the isolation valve receives a control signal to switch between a closed state and an open state.

13. A cleaning system comprising a maintenance station according to any one of claims 1 to 12.

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