Water Automatic Exchange Assembly and Self-Cleaning Maintenance Station

Abstract

The present disclosure provides a water automatic exchange assembly (7000) and a self-cleaning maintenance station. The water automatic exchange assembly (7000) includes a control device (7100) and a water tank assembly (7200). The control device (7100) is configured to realize automatic addition of clean water, automatic discharge of sewage, or automatic addition of cleaning liquid to the water tank assembly (7200). The water tank assembly (7200) is configured to be assembled in a water storage chamber (2700) of the self-cleaning maintenance station. The water tank assembly (7200) includes a sewage tank (5000), a clean water tank (4000), and a water tank top shell (7300). The water tank top shell (7300) substantially covers the sewage tank (5000) and the clean water tank (4000). The water tank top shell (7300), the sewage tank (5000), and the clean water tank (4000) form an integral structure. When the water tank assembly (7200) is assembled in the water storage chamber (2700) of the self-cleaning maintenance station, a part of the tank body of the water tank assembly (7200) is disposed outside the water storage chamber (2700). The present disclosure designs the water tank assembly (7200) as an integral structure, which facilitates the assembly of the water tank and at the same time provides an integral structure convenient for automatic addition of clean water and automatic discharge of sewage in the water tank.

Description

Related Applications

[0001] This application claims priority to Chinese Patent Applications 202210574202.1, 202210573204.9, and 202210573525.9, filed on May 25, 2022, and all the disclosure contents of the Chinese patent applications are incorporated herein by reference as part of this application.

Technical Field

[0002] The present disclosure relates to the technical field of cleaning devices, and specifically, to a water automatic exchange assembly and a self-cleaning maintenance station.

Background Art

[0003] In recent years, with the popularization of automatic cleaning devices, the functions of automatic cleaning devices have become increasingly numerous. In particular, the application of automatic cleaning devices integrating various functions such as sweeping, dust suction, mopping, dust removal, and mop cloth washing has been increasing.

[0004] In the existing technology, through a self-cleaning maintenance station, automatic dust collection and mop cloth washing of the automatic cleaning device are performed. Therefore, it is necessary to add clean water to the self-cleaning maintenance station and remove the sewage therein at the same time. Currently, all the methods for adding clean water and removing sewage in the self-cleaning maintenance station are performed manually, which brings inconvenience to the application of the automatic cleaning device. Furthermore, in the split design of the water tank structure in the existing technology, the water tank is not easy to detach, which also brings inconvenience to the application of the water tank.

Summary of the Invention

[0005] Embodiments of the present disclosure provide a water automatic exchange assembly and a self-cleaning maintenance station, specifically as follows.

[0006] Embodiments of the present disclosure provide a water automatic exchange assembly, comprising a control device and a water tank assembly. The control device is configured to realize automatic addition of clean water into the water tank assembly, automatic discharge of sewage, or automatic addition of cleaning liquid. The water tank assembly is configured to be assembled in a water storage chamber of a self-cleaning maintenance station. The water tank assembly includes a sewage tank, a clean water tank, and a water tank top shell. The water tank top shell substantially covers the sewage tank and the clean water tank. The water tank top shell, the sewage tank, and the clean water tank form an integral structure. Here, when the water tank assembly is assembled in the water storage chamber of the self-cleaning maintenance station, a part of the tank body of the water tank assembly is arranged outside the water storage chamber.

[0007] In some embodiments, the sewage tank and the clean water tank are provided below the water tank top shell with a preset distance interval therebetween.

[0008] In some embodiments, depressions formed inward are provided on the outer walls of the same side of the sewage tank and the clean water tank. Sewage inlets and clean water inlets are provided through the top ends of the depressions upward. The sewage inlets are configured to pump sewage into the sewage tank, and the clean water inlets are configured to pump clean water from the clean water tank.

[0009] In some embodiments, a water inlet is provided on one side of the water tank top shell. The water inlet is connected to the clean water tank, and the control device realizes automatic addition of clean water to the clean water tank.

[0010] In some embodiments, a water overflow port is further provided on one side of the water tank top shell. The water overflow port is connected to the clean water tank. When the clean water tank is full, the water in the clean water tank is automatically discharged through the water overflow port.

[0011] In some embodiments, a drain outlet is further provided on one side of the water tank top shell, the drain outlet is connected to the sewage tank, and when the sewage tank is full, the water in the sewage tank is automatically discharged through the drain outlet.

[0012] In some embodiments, a sensor configured to detect that the sewage tank and the clean water tank are assembled at a predetermined position is provided on the outer wall of the sewage tank or the clean water tank.

[0013] In some embodiments, the water tank top shell includes a detachable water tank top cover, and the tops of the sewage tank and the clean water tank extend into the water tank top shell.

[0014] In some embodiments, the side wall of the water tank top shell extends downward along the side walls of the sewage tank and the clean water tank, forming a U-shaped structure to wrap the side walls of the sewage tank and the clean water tank.

[0015] In some embodiments, the side wall of the U-shaped water tank top shell is aligned with the outer wall edge of the water storage chamber, and when the water tank assembly is assembled in the water storage chamber, the side wall of the U-shaped water tank top shell is disposed entirely outside the water storage chamber.

[0016] In some embodiments, the side wall of the sewage tank includes at least one first recess extending upward along the bottom of the sewage tank, and the side wall of the clean water tank includes at least one second recess extending upward along the bottom of the clean water tank. The first recess and the second recess are restricted to the assembly positions of the sewage tank and the clean water tank.

[0017] In some embodiments, the sewage tank and the clean water tank are made of a transparent material for observing the liquid levels in the sewage tank and the clean water tank.

[0018] In some embodiments, within the clean water tank, a clean water float ball base provided at the bottom of the clean water tank main body, a clean water float ball connected to the clean water float ball base, configured to detect the water level and, when the water level is less than a first predetermined threshold, open a control water inlet by the control device to automatically add clean water to the clean water tank, are provided.

[0019] In some embodiments, within the clean water tank, a cleaning liquid float ball base provided at the bottom of the cleaning liquid tank main body, a cleaning liquid float ball connected to the cleaning liquid float ball base, configured to detect the liquid level of the cleaning liquid and, when the liquid level is higher than a second predetermined threshold, control a peristaltic pump by the control device to add the cleaning liquid to the clean water tank, are further provided.

[0020] In some embodiments, within the sewage tank, a sewage float ball provided at the top of the sewage tank, configured to detect the liquid level of the sewage and, when the liquid level is higher than a third predetermined threshold, sequentially open a sewage pump and a drain valve by the control device to automatically discharge the sewage from the sewage tank to the drain outlet, is further provided.

[0021] Embodiments of the present disclosure further provide a water automatic exchange assembly, including a main control box and a water tank assembly. One end of the main control box is connected to a water source via a first external water pipe, and the other end is connected to the water tank assembly via a second external water pipe. Here, the main control box includes a first electromagnetic valve, a low-pressure switch, and a high-pressure switch. The low-pressure switch and the high-pressure switch generate corresponding trigger signals based on the water pressure state of the second external water pipe. The first electromagnetic valve is opened or closed in response to the trigger signal, and correspondingly, it is controlled whether the water in the water source flows into the second external water pipe via the first external water pipe.

[0022] In some embodiments, the water tank assembly includes a second solenoid valve, and the main control box, in response to the opening of the second solenoid valve, causes the low-pressure switch to generate a low-pressure trigger signal, and in response to the low-pressure trigger signal, causes the first solenoid valve to open, such that water in the water source flows through the first external water pipe into the second external water pipe and then into the water tank assembly.

[0023] In some embodiments, the main control box, in response to the closing of the second solenoid valve, causes the high-pressure switch to generate a high-pressure trigger signal, and in response to the high-pressure trigger signal, causes the first solenoid valve to close.

[0024] In some embodiments, the main control box includes a box body, the box body has a box body water inlet and a box body water outlet, the box body water inlet is connected to a water source through the first external water pipe, and the box body water outlet is connected to the water tank assembly through the second external water pipe.

[0025] In some embodiments, the main control box further includes a first water pipe provided in the box body and having one end connected to the box body water inlet, a second water pipe provided in the box body and having one end connected to the box body water outlet and the other end connected to the first water pipe, and a third water pipe provided in the box body and provided between the first water pipe and the second water pipe. Here, the first solenoid valve is provided on the first water pipe, the high-pressure switch is provided on the second water pipe, and the low-pressure switch is provided on the third water pipe.

[0026] In some embodiments, the main control box further includes a main controller provided in the box body and electrically connected to the first solenoid valve, the low-pressure switch, and the high-pressure switch, and configured to control the opening and closing of the first solenoid valve based on the trigger signal.

[0027] In some embodiments, the main control box further includes a pressure maintaining airbag box configured to replenish the liquid in the third water pipe and the second water pipe when the liquid pressure in the second external water pipe drops.

[0028] In some embodiments, the main control box is in fluid communication with the first water pipe, the second water pipe, and the third water pipe respectively, and further includes a pressure maintaining airbag box configured to replenish the liquid in the first water pipe, the second water pipe, and the third water pipe with the liquid in the pressure maintaining airbag box when the liquid pressure in the first water pipe, the second water pipe, and / or the third water pipe drops.

[0029] In some embodiments, the main control box further includes a four-way pipe having four communication ports respectively connected to the first water pipe, the second water pipe, the third water pipe, and the pressure maintaining airbag box, and the pressure maintaining airbag box is in liquid communication with the first water pipe, the second water pipe, and the third water pipe respectively through the four-way pipe.

[0030] In some embodiments, the pressure maintaining airbag box includes a pressure maintaining airbag box housing provided with an opening at the top, and an airbag provided in the pressure maintaining airbag box housing and configured to elastically expand and contract according to the amount of liquid entering and leaving the airbag through the opening.

[0031] In some embodiments, the airbag includes an airbag body provided in the pressure maintaining airbag box housing and configured to elastically expand and contract according to the amount of liquid entering and leaving the airbag, and an airbag end provided at the top of the airbag body and substantially flush with the end of the pressure maintaining airbag box, the airbag end having an airbag opening for the entry and exit of liquid. including an airbag neck provided between the airbag body and the airbag end portion.

[0032] In some embodiments, the pressure-maintaining airbag box has a central hole, and further includes an assembly member that is sleeved on the airbag neck through the central hole and then assembles the airbag end portion to the opening of the pressure-maintaining airbag box housing.

[0033] In some embodiments, the assembly member further includes a concave surface provided on the top surface of the assembly member surrounding the central hole and configured to fit the airbag end portion.

[0034] In some embodiments, the assembly member further includes an edge portion that extends outward surrounding the top surface of the assembly member and is configured to be provided around the opening of the pressure-maintaining airbag box housing.

[0035] In some embodiments, the pressure-maintaining airbag box further includes a cover body that is assembled to the pressure-maintaining airbag box housing and is configured to seal the airbag in the pressure-maintaining airbag box housing after strongly pressing the edge portion.

[0036] In some embodiments, the main controller further obtains a first time difference when the water pressure in the water circuit drops and a change occurs in the trigger states of the high-pressure switch and the low-pressure switch, and when the first time difference is within a first predetermined range, determines that there is a leak in the water pipe, and is configured to control the water pipe leak signal lamp to light up.

[0037] In some embodiments, when the water pressure in the water circuit drops, the main controller further obtains a second time difference in which a change occurs in the trigger states of the high-pressure switch and the low-pressure switch. When the second time difference is within a second predetermined range, it is determined that a water pipe has burst, and the water pipe burst signal lamp is configured to be controlled to light up.

[0038] In some embodiments, when the water pressure in the water circuit drops, the main controller further obtains a third time difference at which the high-pressure switch and the low-pressure switch are triggered. When the third time difference is within a third predetermined range, it is determined that normal water replenishment is taking place, and the normal water replenishment signal lamp is configured to be controlled to light up.

[0039] In some embodiments, the main control box further closes the second solenoid valve within a first predetermined time period and closes the first solenoid valve within a second predetermined time period, where the second predetermined time period at least partially overlaps the first predetermined time period, and if the high-pressure switch is continuously triggered within the time period when the second predetermined time period overlaps the first predetermined time period, it is configured to determine that there is no burst in the water pipe.

[0040] Embodiments of the present disclosure further provide a water automatic replacement assembly including a control device and a water tank assembly. The control device is provided inside the water tank assembly and is configured to realize automatic addition of clean water or automatic addition of cleaning liquid to the water tank assembly. The water tank assembly includes a water tank top shell and a clean water tank. The water tank top shell covers the clean water tank. The clean water tank includes a clean water tank body and a cleaning liquid tank body. Here, a water quantity detection assembly is provided inside the clean water tank body. In response to detecting that the water quantity in the clean water tank body has reached a predetermined value by the water quantity detection assembly, a predetermined quantity of cleaning liquid is automatically added from the cleaning liquid tank body into the clean water tank body under the control of the control device.

[0041] In some embodiments, the clean water tank includes a clean water tank top cover that covers the clean water tank body, and the clean water tank top cover extends into the water tank top shell.

[0042] In some embodiments, the clean water tank top cover includes a groove, and a peristaltic pump configured to pump the cleaning liquid in the cleaning liquid tank body into the clean water tank body under the control of the control device is provided in the groove.

[0043] In some embodiments, the peristaltic pump has a liquid inlet and a liquid outlet. The liquid inlet extends near the bottom of the cleaning liquid tank body through a first liquid transport pipe, and the liquid outlet extends into the clean water tank body through a second liquid transport pipe, pumping the cleaning liquid in the cleaning liquid tank body into the clean water tank body.

[0044] In some embodiments, the cleaning liquid tank body includes a cleaning liquid passage, and the cleaning liquid passage extends upward from the inside of the cleaning liquid tank body along the outside of the clean water tank body to the clean water tank top cover, adding cleaning liquid to the cleaning liquid tank body.

[0045] In some embodiments, in the cleaning liquid tank body, a cleaning liquid float ball base provided at the bottom of the cleaning liquid tank body, and a cleaning liquid float ball connected to the cleaning liquid float ball base and configured to detect the liquid level of the cleaning liquid are provided. When the cleaning liquid level is less than a second predetermined threshold, the addition of the cleaning liquid into the clean water tank body is stopped under the control of the control device.

[0046] In some embodiments, the water tank assembly includes a cleaning liquid state indicator lamp, and when the cleaning liquid level is less than the second predetermined threshold, the cleaning liquid state indicator lamp is controlled to light up.

[0047] In some embodiments, the side wall of the water tank top shell extends downward along the side wall of the clean water tank, forming a U-shaped structure to wrap the side wall of the clean water tank body.

[0048] In some embodiments, within the clean water tank body, a clean water float ball base provided at the bottom of the clean water tank body, and a clean water float ball connected to the clean water float ball base and configured to detect the water level are provided. Here, when the water level is less than a first predetermined threshold, the control device opens the water inlet and is controlled to automatically add clean water to the clean water tank.

[0049] In some embodiments, the water quantity detection assembly includes a full water detection sensor. Responding to the detection by the water quantity detection assembly that the water quantity has reached a predetermined value includes responding to the detection by the full water detection sensor that the water quantity in the clean water tank body has reached or is close to the full water quantity.

[0050] In some embodiments, the water quantity detection assembly includes a water presence / absence detection sensor. Responding to the detection by the water quantity detection assembly that the water quantity has reached a predetermined value includes responding to the detection by the water presence / absence detection sensor that the water quantity in the clean water tank body has reached the no-water quantity.

[0051] Embodiments of the present disclosure further provide a self-cleaning maintenance station including a water storage chamber configured to accommodate the water automatic exchange assembly described in any one of the above.

[0052] Embodiments of the present disclosure have the following technical effects.

[0053] The water automatic exchange assembly provided by the embodiments of the present disclosure can realize automatic addition of clean water to the clean water tank, automatic discharge of sewage, or automatic addition of cleaning liquid by controlling the water tank assembly with a control device, liberate hands, improve cleaning efficiency, and further, by designing the water tank assembly as an integral structure, it is convenient for assembling the water tank and at the same time provides an integral structure convenient for the application of automatic addition of clean water and automatic discharge of sewage in the water tank.

[0054] The water automatic exchange assembly provided by the embodiments of the present disclosure can realize automatic addition of clean water to the clean water tank by adding a main control box, liberate hands, improve cleaning efficiency, and further, by adding a pressure-holding airbag box, when the water pipe bursts or leaks, it can timely judge the leakage or rupture of the water pipe, stop the water source in time, give an alarm, and avoid the risk of water flow leakage.

[0055] The water automatic exchange assembly provided by the embodiments of the present disclosure can detect that the water volume in the clean water tank reaches a predetermined value by a water volume detection assembly in the clean water tank body, and when it reaches the predetermined value, automatically add a predetermined amount of cleaning liquid into the clean water tank body under the control of the control device, and realize the addition of a predetermined amount of cleaning liquid according to the water volume in the clean water tank, and can realize automatic and accurate addition of the cleaning liquid.

Brief Description of the Drawings

[0056] The attached drawings here are incorporated into this specification and form a part of this specification, showing embodiments that conform to the present disclosure, and are used to interpret the principle of the present disclosure together with the specification. Obviously, the attached drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these attached drawings without creative labor.

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Embodiments for Carrying Out the Invention

[0057] To make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be described in more detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments of the present disclosure, other embodiments obtained by those skilled in the art without creative labor are all included in the protection scope of the present disclosure.

[0058] The terms used in the embodiments of the present disclosure are only used for the purpose of explaining specific embodiments and are not intended to limit the present disclosure. In the embodiments of the present disclosure and the appended claims, the singular forms "one", "the foregoing" and "said" are also intended to include the plural forms, and generally include at least two unless the context clearly indicates otherwise.

[0059] It should be noted that the term "and / or" used in this specification is only for explaining the relevant relationship of the relevant objects, and there are three relationships. For example, A and / or B may mean that A exists alone, A and B exist simultaneously, and B exists alone. Also, " / " in this specification generally indicates that the relevant objects before and after are in an "or" relationship.

[0060] It should be understood that in the embodiments of the present disclosure, terms such as the first, the second, the third, etc. may be used for the purpose of explanation, but should not be limited to these terms. These terms are only used for distinction. For example, unless departing from the scope of the embodiments of the present disclosure, the first may also be called the second, and similarly, the second may also be called the first.

[0061] Note that terms such as "comprising", "including" or any other arbitrary variations are intended to cover non-exclusive inclusion. It should be noted that a product or device including a series of elements not only includes those elements, but also includes other elements explicitly listed, or elements inherent to these products or devices. Further, unless otherwise limited, elements defined by the expression "comprising..." do not exclude the presence of other identical elements in the product or device including the said elements.

[0062] Hereinafter, selectable embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0063] In the related art, the structure of the self-cleaning maintenance station is usually complex. The water tank is arranged in the complex hood cover of the self-cleaning maintenance station. When adding clean water manually or removing sewage, clean water needs to be added manually when the water in the clean water tank is insufficient, which reduces the cleaning efficiency. When the sewage tank is full, it is necessary to manually pour out the sewage, which not only reduces the cleaning efficiency but also increases the risk of sewage overflow. The application is not sufficiently convenient. The outer shape structure of the water tank is too messy and not neat and beautiful. Also, since the water tank connection port is provided at the bottom of the water tank, the water in the water tank is likely to overflow, and it often damages the elements in the self-cleaning maintenance station.

[0064] Therefore, the embodiments of the present disclosure provide a water automatic exchange assembly, which includes a water tank top shell, a sewage tank, and a clean water tank with an integrated structure. The water tank assembly can realize automatic addition of clean water, automatic discharge of sewage, or automatic addition of cleaning liquid, liberating human hands. When the clean water tank is short of water, clean water can be automatically added, improving the cleaning efficiency. When the sewage tank is full, sewage can be automatically pumped out, improving the cleaning efficiency and reducing the risk of sewage overflow at the same time. Furthermore, the outer shape of the integrated water automatic exchange assembly is more concise and aesthetic. By designing the water tank assembly as an integrated structure, it not only facilitates the assembly of the water tank but also provides a convenient integrated structure for the automatic addition of clean water and the automatic discharge of sewage in the water tank.

[0065] Specifically, the water automatic exchange assembly provided by the embodiments of the present disclosure is assembled into a self-cleaning maintenance station. As an example, FIG. 1 is a schematic diagram exemplarily showing the complete overall structure in which the water automatic exchange assembly is assembled into the self-cleaning maintenance station. FIG. 2 is a schematic diagram exemplarily showing the split structure of the water automatic exchange assembly and the self-cleaning maintenance station.

[0066] To more clearly explain the structure of the water automatic exchange assembly, the following directions are defined with reference to the self-cleaning maintenance station: The self-cleaning maintenance station is defined by three mutually perpendicular axes, namely the transverse axis Y, the front-rear axis X, and the central vertical axis Z. The opposite direction of the arrow along the front-rear axis X, that is, the direction in which the automatic cleaning device enters the self-cleaning maintenance station, is defined as "rear", and the direction of the arrow along the front-rear axis X, that is, the direction in which the automatic cleaning device leaves the self-cleaning maintenance station, is defined as "front". The transverse axis Y is substantially the direction along the width of the self-cleaning maintenance station body. The vertical axis Z is the direction extending upward along the bottom surface of the self-cleaning maintenance station. Here, the direction of the water automatic exchange assembly is explained by XYZ under the normally applied state. As shown in FIG. 1, the direction in which the bottom plate of the self-cleaning maintenance station protrudes from the self-cleaning maintenance station body is the front, the direction toward the rear wall of the self-cleaning maintenance station body is the rear, the water automatic exchange assembly 7000 is located on the right side of the self-cleaning maintenance station, and the dust collection chamber 2100 is located on the left side of the self-cleaning maintenance station.

[0067] As shown in FIG. 1, the self-cleaning maintenance station provided by this embodiment includes a self-cleaning maintenance station bottom plate 1000, a self-cleaning maintenance station main body 2000, a water automatic exchange assembly 7000 and a dust collection hood 2800 provided on the self-cleaning maintenance station main body 2000. Here, the self-cleaning maintenance station bottom plate 1000 is detachably or non-detachably connected to the self-cleaning maintenance station main body 2000, thereby facilitating the transportation and maintenance of the self-cleaning maintenance station bottom plate 1000 and the self-cleaning maintenance station main body 2000. A cleaning chamber is formed between the lower part of the self-cleaning maintenance station main body 2000 and the main body base 6000, and the cleaning chamber is opened forward. The cleaning chamber is used to accommodate the automatic cleaning device when the automatic cleaning device returns to this self-cleaning maintenance station for maintenance operations. A cleaning groove 6200 is provided on the self-cleaning maintenance station main body base 6000, and after the automatic cleaning device is adapted to the cleaning chamber, it is configured to clean the cleaning member on the automatic cleaning device through the cleaning groove.

[0068] As shown in FIG. 2, the self-cleaning maintenance station main body 2000 includes a water storage chamber 2700 and a dust collection chamber 2100. The water storage chamber 2700 is provided at the top of the self-cleaning maintenance station main body 2000, opening upward and forward. The water storage chamber includes a clean water chamber 2400 and a sewage chamber 2300 for accommodating the clean water tank of the water automatic exchange assembly 7000. The dust collection chamber 2100 is provided at the top end of the self-cleaning maintenance station main body 2000, opening upward and forward, side by side with the water storage chamber 2700. By designing the water storage chamber 2700 and the dust collection chamber 2100 to be upward and forward, it is easy to detach and attach the water automatic exchange assembly 7000 and the dust collection hood 2800. Both the water automatic exchange assembly 7000 and the dust collection hood 2800 are assembled onto the self-cleaning maintenance station main body 2000 from the front and upper directions. Such a structural design conforms to the user's usage habits. Furthermore, due to the upward and forward design, it is easy to perform daily maintenance on the elements in the water storage chamber 2700 and the dust collection chamber 2100.

[0069] As shown in Fig. 2, the water storage chamber 2700 and the dust collection chamber 2100 are surrounded by the rear wall, the front wall and a plurality of side walls of the self-cleaning maintenance station main body 2000. The rear wall and the front wall of the water storage chamber 2700 and the dust collection chamber 2100 are coplanar respectively, and one side wall is coplanar. Here, the height of the rear wall of the self-cleaning maintenance station main body 2000 is higher than the height of the front wall of the self-cleaning maintenance station main body 2000. The side wall of the self-cleaning maintenance station main body 2000 is connected to the rear wall and the front wall, and the end face of the side wall of the self-cleaning maintenance station main body 2000 has an arc-shaped structure. The water storage chamber 2700 and the dust collection chamber 2100 are designed to be above and in front, which facilitates the detachment and attachment of the clean water tank of the automatic water exchange assembly 7000 and the dust collection hood 2800. Here, in the arc-shaped structure, the stability and aesthetics of the automatic water exchange assembly 7000 and the dust collection hood 2800 attached to the water storage chamber 2700 and the dust collection chamber 2100 are ensured.

[0070] The water storage chamber 2700 is used to accommodate the automatic water exchange assembly 7000 (including the sewage tank 5000 and the clean water tank 4000). In the water storage chamber 2700, a tab 2600 is provided which is in close contact with the rear wall of the water storage chamber 2700 and extends upward along the bottom of the water storage chamber to a height slightly lower than the height of the rear wall of the water storage chamber. A plurality of protruding openings are provided at the upper part of the tab. The protruding openings are made of soft rubber material, but are not limited thereto. The protruding openings are used to be connected to the sewage tank 5000 or the clean water tank 4000 assembled at the corresponding position. Here, a vertically extending partition plate 2710 is provided in the water storage chamber 2700 to divide the water storage chamber 2700 into two parts. One part is used to accommodate the sewage chamber 2300 of the sewage tank 5000, and the other part is used to accommodate the clean water chamber 2400 of the clean water tank 4000. It should be noted that the upper part of the tab may be the top of the tab, or the side wall of the tab higher than the highest water level line position of the clean water tank and the sewage tank in the assembled state, but it is not particularly limited here.

[0071] In some embodiments, the protrusion opening includes an air pump port 2610 and a sewage tank connection port 2620, and is provided corresponding to the top end of the tab 2600 at the assembly position of the sewage tank 5000. The air pump pumps the sewage tank 5000 through the air pump port 2610. Since the sewage tank 5000 has a sealed structure, a negative pressure is formed inside during the pumping process, and the sewage in the cleaning groove is pumped into the sewage tank 5000 through the sewage pipe and the sewage tank connection port 2620. The clean water tank connection port 2630 is provided corresponding to the top end of the tab 2600 at the assembly position of the clean water tank 4000. The clean water in the clean water tank 4000 flows into the scraping member in the cleaning groove through the clean water tank connection port 2630 under the action of the peristaltic pump to clean the cleaning head of the automatic cleaning device. The air pump port 2610, the sewage tank connection port 2620, and the clean water tank connection port 2630 are provided at the top end of the tab 2600 to avoid the water in the clean water tank or the sewage tank overflowing from the water tank and flowing into the clean water chamber or the sewage chamber during the replacement process of the clean water tank or the sewage tank. By hermetically connecting the sewage tank 5000 and the clean water tank 4000 to the top through the air pump port 2610, the sewage tank connection port 2620, and the clean water tank connection port 2630, the operation is more convenient than the connection at the bottom end of the clean water chamber or the sewage chamber.

[0072] In some embodiments, as shown in FIG. 3, the automatic water exchange assembly 7000 includes a control device 7100 and a water tank assembly 7200. The control device 7100 is provided inside the water tank assembly 7200 and includes a circuit board and electronic components provided on the circuit board. The electronic components are electrically connected to solenoid valves, float ball valves, and various sensors within the automatic water exchange assembly 7000, and are configured to realize automatic addition of clean water, automatic discharge of sewage, or automatic addition of cleaning liquid to the water tank assembly 7200. Here, the water tank assembly 7200 includes a sewage tank 5000, a clean water tank 4000, and a water tank top shell 7300. The water tank top shell substantially covers the sewage tank and the clean water tank, and the rear side of the water tank top shell 7300 protrudes from the water tank assembly 7200. The water tank assembly 7200 has a substantially L-shaped structure, and the sewage tank 5000 and the clean water tank 4000 extend into the water tank top shell 7300. Here, the water tank top shell, the sewage tank, and the clean water tank form an integral structure, thereby making the outer shape of the water tank neater and more beautiful.

[0073] As shown in FIG. 3, the sewage tank 5000 and the clean water tank 4000 are provided below the water tank top shell 7300 with a preset distance interval therebetween. Here, the sewage tank 5000 is inserted into the sewage chamber 2300, the clean water tank 4000 is inserted into the clean water chamber 2400, and the partition plate 2710 is inserted into the gap between the sewage tank 5000 and the clean water tank 4000, thereby making the automatic water exchange assembly 7000 more stable.

[0074] A recessed portion 7400 is formed inwardly on the outer walls on the same side of the sewage tank 5000 and the clean water tank 4000. A sewage port and a clean water port are provided so as to penetrate upward at the top end of the recessed portion 7400. The sewage port is configured to pump sewage into the sewage tank 5000, and the clean water port is configured to pump clean water from the clean water tank 4000. Specifically, the recessed portion 7400 is restricted to coincide with at least a part of the tab 2600. A clean water port, a sewage port, a restriction pit, etc. are provided on the top surface of the recessed portion 7400, and are connected to coincide with the air pump port 2610, the sewage tank connection port 2620, the clean water tank connection port 2630, or the soft rubber protruding point 2640 provided on the tab 2600. Due to the overall restriction of the restriction pit and the soft rubber protruding point 2640, the automatic water exchange assembly 7000 can be accurately provided at the corresponding position of the water storage chamber 2700, and the displacement of the automatic water exchange assembly 7000 can be avoided.

[0075] Specifically, as shown in FIG. 4, for the clean water tank 4000, a clean water port 7410 is provided on the top surface of the recessed portion 7400. When the clean water tank 4000 is assembled into the water storage chamber 2700, the water tank recessed portion 7400 is just received by the tab 2600 in the water storage chamber 2700, and the water tank clean water port 7410 is connected to the protruding opening at the top of the tab 2600.

[0076] For the sewage tank 5000, an air pump port 7420 and a sewage water inlet 7440 are further provided on the top surface of the recessed portion 7400, and the air pump port 7420 is connected to the air pump connection port 2610 at the top of the tab 2600. When the air pump connection port 2610 is connected to the air pump port 7420, sewage can be pumped into the sewage tank 5000. In some embodiments, the air pump pumps the sewage tank 5000 through the air pump connection port 2610 and the air pump port 7420. Since the sewage tank 5000 has a sealed structure, a negative pressure is formed inside during the pumping process, and the sewage in the washing groove is pumped into the sewage tank 5000 through the sewage pipe, the sewage water inlet 7440, and the sewage tank connection port 2620.

[0077] A plurality of pits 7430 may be further provided on the top surface of the recessed portion 7400. When the water automatic exchange assembly 7000 is assembled in the water storage chamber 2700, the top surface of the recessed portion 7400 is exactly received by the tab 2600 in the water storage chamber 2700, and the plurality of pits provided on the top surface of the recessed portion 7400 match with the soft rubber protruding points on the top of the tab 2600 to realize the limitation of the water automatic exchange assembly 7000. Due to the matching limitation between the soft rubber protruding point 2640 and the pit, the position of the water automatic exchange assembly 7000 in the water storage chamber 2700 can be made more accurate, and the displacement of the water automatic exchange assembly 7000 can be avoided.

[0078] A water inlet 7310 is provided on the rear side of the water tank top shell 7300, and the water inlet 7310 is connected to the clean water tank 4000 through a water pipe, and the control device 7100 realizes the automatic addition of clean water in the clean water tank 4000. A water overflow port 7320 is further provided on the rear side of the water tank top shell 7300, and the water overflow port 7320 is connected to the clean water tank 4000 through a water pipe. When the clean water tank 4000 is full, the water in the clean water tank is automatically discharged through the water overflow port 7320 to avoid clean water flowing into the water automatic exchange assembly 7000 and damaging the elements. A drain port 7330 is further provided on the rear side of the water tank top shell, and the drain port is connected to the sewage tank through a water pipe. When the sewage tank is full, the water in the sewage tank is automatically discharged through the drain port to avoid sewage flowing into the water automatic exchange assembly 7000 and damaging the elements.

[0079] A sensor 7500 is provided on at least one outer wall of the sewage tank 5000 or the clean water tank 4000, and is configured to detect whether the sewage tank 5000 and the clean water tank 4000 are assembled in a predetermined position. When the sewage tank 5000 or the clean water tank 4000 is not assembled in the predetermined position, the water automatic exchange assembly 7000 issues an alarm, for example, an indicator lamp lights up.

[0080] The water tank top shell 7300 includes a detachable water tank top cover 7340. The tops of the sewage tank 5000 and the clean water tank 4000 extend into the water tank top shell. After the water tank top cover 7340 is opened, the elements within the water tank top shell 7300 can be maintained. Signal lamps, such as a water pipe leakage signal lamp, a water pipe rupture signal lamp, a normal water replenishment signal lamp, etc., are provided on the water tank top cover 7340.

[0081] The side walls of the water tank top shell 7300 extend downward along the side walls of the sewage tank 5000 and the clean water tank 4000 to form a U-shaped surrounding structure 7800. The U-shaped surrounding structure 7800 surrounds the side walls of the sewage tank 5000 and the clean water tank 4000, for example, at least surrounds a part of the front side wall and the left and right side walls of the sewage tank 5000 and the clean water tank 4000. Thereby, after the water automatic exchange assembly 7000 is assembled at the top of the self-cleaning maintenance station, only the U-shaped surrounding structure is exposed on the outer surface. As shown in FIG. 1, the overall aesthetics and neatness of the self-cleaning maintenance station are improved. The side walls of the U-shaped water tank top shell are aligned with the outer wall edges of the water storage chamber. When the water tank assembly is assembled within the water storage chamber, the side walls of the U-shaped water tank top shell are flush with the side walls of the self-cleaning maintenance station main body 2000. The side walls of the U-shaped water tank top shell are generally arranged outside the water storage chamber. Thereby, the side walls of the U-shaped water tank top shell and the side walls of the self-cleaning maintenance station main body 2000 together constitute the overall outer contour structure of the self-cleaning maintenance station, which is aesthetic as a whole and the liquid level within the water tank assembly can be easily observed.

[0082] As shown in FIG. 5, the side wall of the sewage tank 5000 includes at least one first recess 7600 extending upward along the bottom of the sewage tank, and the side wall of the clean water tank 4000 includes at least one second recess 7700 extending upward along the bottom of the clean water tank. The first recess 7600 and the second recess 7700 are configured to be restricted at the assembly positions of the sewage tank 5000 and the clean water tank 4000. The sewage tank and the clean water tank are made of a transparent material to easily observe the liquid levels in the sewage tank and the clean water tank.

[0083] In the clean water tank, there is provided a clean water float ball base provided at the bottom of the clean water tank body, and a clean water float ball connected to the clean water float ball base and configured to detect the water level. When the water level is less than a first predetermined threshold, the control device controls to open the water inlet to automatically add clean water to the clean water tank. In the clean water tank, there is further provided a cleaning liquid float ball base provided at the bottom of the cleaning liquid tank body, and a cleaning liquid float ball connected to the cleaning liquid float ball base and configured to detect the liquid level of the cleaning liquid. When the liquid level is higher than a second predetermined threshold, the cleaning liquid is automatically added to the clean water tank by controlling the peristaltic pump. In the sewage tank, there is further provided a sewage float ball provided at the top of the sewage tank and configured to detect the liquid level of the sewage. When the liquid level is higher than a third predetermined threshold, the sewage pump and the drain valve are sequentially opened to automatically discharge the sewage from the drain port to the sewage tank.

[0084] The water automatic exchange assembly 7000 and the dust collection hood 2800 are provided side by side in the clean water tank at the top of the self-cleaning maintenance station to form a flat array structure, so that on the one hand, they can be easily installed and removed for use, and on the other hand, the outer shape is flat and aesthetically pleasing, improving the user experience.

[0085] After the self-cleaning maintenance station is used for a long time, the protrusion openings are contaminated by the sewage for cleaning the cleaning members, and it is inevitable that dirt remains. With the above settings, the protrusion openings on the tab 2600 have an open structure with respect to the front wall, or also have an open structure with respect to the side wall. The arm and the cleaning tools can contact the protrusion openings from various angles, and the user can easily clean the dirt accumulated near the protrusion openings.

[0086] When the automatic water exchange assembly 7000 is assembled in the water storage chamber, the top surface of the automatic water exchange assembly 7000 is higher than the rear wall of the self-cleaning maintenance station body, and the box body part of the automatic water exchange assembly 7000 is located outside the water storage chamber. With the above settings, the material usage amount of the self-cleaning maintenance station body is reduced, and the technical effect of the aesthetic design is also achieved. At the same time, the top of the self-cleaning maintenance station body adopts a design with a low front wall and a high rear wall. The upper positions of the front parts of the automatic water exchange assembly 7000 and the dust collection hood 2800 are also simultaneously exposed outside the cavity, which is convenient for people to easily observe the water levels in the transparent sewage tank and clean water tank and the situation in the dust collection chamber, and to perform corresponding operations on the sewage tank, clean water tank, and dust collection chamber in a timely manner.

[0087] In the related art, the clean water tank and the sewage tank of the self-cleaning maintenance station are arranged on the self-cleaning maintenance station, and it is necessary to manually add clean water. When the clean water tank runs out of water, clean water needs to be manually added, so the cleaning efficiency is reduced.

[0088] Therefore, the embodiments of the present disclosure realize the automatic addition of clean water, liberate the hands, automatically add clean water when the clean water tank runs out of water, improve the cleaning efficiency, and further provide an automatic water exchange assembly that can timely close the water source, issue an alarm, and avoid water leakage when the water pipe bursts or leaks.

[0089] Specifically, the automatic water exchange assembly provided by the embodiments of the present disclosure is assembled in a self-cleaning maintenance station. As an example, as shown in FIG. 6, the automatic water exchange assembly 7000 includes a main control box 8000 and a water tank assembly 7200. One end of the main control box 8000 is connected to the outside of the water tank assembly 7200 via a second external water pipe 9000, and the other end of the main control box 8000 is connected to a water source via a first external water pipe 10000. The main control box 8000 is configured to at least realize automatic addition of clean water to the water tank assembly. Here, as shown in FIG. 7, the main control box 8000 includes a first solenoid valve 8100, a low-pressure switch 8200, and a high-pressure switch 8300. The low-pressure switch 8200 and the high-pressure switch 8300 are configured to generate corresponding trigger signals based on the water pressure state of the second external water pipe 9000. The first solenoid valve 8100 is opened and closed in response to the trigger signal, and correspondingly controls whether the water in the water source can flow into the second external water pipe through the first external water pipe. When the main control box 8000 is provided for the first time, the main control box 8000 is reset once. In the reset state, the first solenoid valve 8100 is opened. At this time, the second solenoid valve on the side of the clean water tank is in a closed state, and the water from the water source cannot enter the main control box 8000 and the external water pipe for circulation. The water pressure in the water pipe rises, and the high-pressure switch generates a high-pressure trigger signal and sends the high-pressure trigger signal to the main controller 8500 in the main control box 8000. The main controller 8500 sends a closing control signal, and the first solenoid valve 8100 is closed in response to the high-pressure trigger signal, stopping the water supply from the water source and maintaining the state where the entire water circuit is filled with clean water.

[0090] As shown in FIG. 8, the main control box 8000 includes a box body 8400. The box body 8400 includes a box body water inlet (not shown) and a box body water outlet 8410. The box body water inlet is connected to a water source, and the box body water outlet 8410 is connected to the water tank assembly 7200 via the second external water pipe 9000. The top of the box body 8400 includes a box body top cover 8420, and the box body top cover 8420 is fixedly connected to the top of the box body 8400 via bolts. The shape of the box body 8400 may be a rectangular parallelepiped, a cube, a sphere, a hemisphere, etc., but is not particularly limited. The material of the box body 8400 may be metal, alloy, hard plastic, rubber, etc., but is not particularly limited.

[0091] As shown in FIG. 7, the main control box 8000 further includes a main controller 8500. The main controller 8500 is provided inside the box body 8400. The main controller 8500 is electrically connected to the first solenoid valve 8100, the low-pressure switch 8200, and the high-pressure switch 8300. The main controller 8500 is configured to control the opening and closing of the first solenoid valve 8100 based on the trigger signal. Here, one side of the water tank assembly 7200 includes a second solenoid valve 7210. When it is detected by the float ball valve in the clean water tank 4000 that the water in the clean water tank is insufficient, a detection signal is sent to the control device 7100. The control device 7100 controls the second solenoid valve 7210 to open. At this time, the water in the water pipe flows into the clean water tank 4000, the water pressure in the water pipe drops, the low-pressure switch 8200 generates a low-pressure trigger signal, and the low-pressure trigger signal is sent to the main controller 8500 in the main control box 8000. The main controller 8500 sends an open control signal, and the first solenoid valve 8100 is opened in response to the low-pressure trigger signal. The water from the water source enters from the water inlet of the box body, and a passage from the water source to the clean water tank is formed, enabling the automatic addition of clean water to the water tank assembly. When it is detected by a full water detection sensor (such as a Hall sensor) in the clean water tank 4000 that the clean water tank is full, a full water detection signal is sent to the control device 7100. The control device 7100 controls the second solenoid valve to close. At this time, water cannot flow into the clean water tank, the water pressure in the water pipe rises, the high-pressure switch generates a high-pressure trigger signal, and the high-pressure trigger signal is sent to the main controller 8500 in the main control box 8000. The main controller 8500 sends a close control signal, and the first solenoid valve 8100 is closed in response to the high-pressure trigger signal, stopping the water supply from the water source and stopping the automatic addition of clean water to the water tank assembly. Through the control of the main control box, the automatic addition of clean water and the automatic closing operation of clean water addition can be realized according to the state of the clean water tank water level, liberating the operator, avoiding the work stop due to water shortage in the dust collection pile, and improving the working efficiency of the automatic cleaning device.

[0092] As shown in FIG. 7, the main control box 8000 is provided inside the box body 8400, and includes a first water pipe 9100 with one end connected to the water inlet of the box body and connected to a water source through the water inlet of the box body, a second water pipe 9200 provided inside the box body 8400 with one end connected to the water outlet 8410 of the box body and the other end connected to the first water pipe 9100, and a third water pipe 9300 provided inside the box body 8400 and connected between the first water pipe 9100 and the second water pipe 9200. Here, the first solenoid valve 8100 is provided in the pipeline of the first water pipe 9100, the high-pressure switch 8300 is provided in the pipeline of the second water pipe 9200, and the low-pressure switch 8200 is provided in the pipeline of the third water pipe. Here, the high-pressure switch 8300 and the low-pressure switch 8200 are pressure sensors. By setting the threshold values of the pressure sensors, they function as high-pressure and low-pressure switches. For example, by setting the low-pressure threshold value of the pressure sensor, when the water circuit pressure is lower than the low-pressure threshold value, the low-pressure switch generates a low-pressure trigger signal. By setting the high-pressure threshold value of the pressure sensor, when the water circuit pressure is higher than the high-pressure threshold value, the high-pressure switch generates a high-pressure trigger signal. The low-pressure threshold value and the high-pressure threshold value are set based on experimental data and are not particularly limited. The high-pressure switch and the low-pressure switch can control the opening and closing of the first solenoid valve in response to different pressure values of the water flow in the water circuit, and finally realize the opening and closing of the water circuit.

[0093] In some embodiments, the main control box 8000 further includes a pressure-maintaining airbag box 8600. Sufficient liquid is pre-stored inside the pressure-maintaining airbag box 8600. When the liquid pressure in the second external water pipe 9000 drops, the pressure-maintaining airbag box replenishes the liquid in the pressure-maintaining airbag box into the third water pipe 9300 and the second water pipe 9200, slows down the pressure drop rate in the third water pipe 9300 and the second water pipe 9200, and increases the response time difference between the low-pressure switch and the high-pressure switch.

[0094] In some embodiments, as shown in FIG. 7, the main control box 8000 further includes a pressure-maintaining airbag box 8600 and a square tube 8700. The pressure-maintaining airbag box 8600 has an opening 8611, and the square tube 8700 has four communication ports, which are respectively connected to the first water pipe 9100, the second water pipe 9200, the third water pipe 9300, and the pressure-maintaining airbag box opening 8611. The pressure-maintaining airbag box 8600 is provided between the first water pipe 9100, the second water pipe 9200, and the third water pipe 9300 through the square tube 8700. The pressure-maintaining airbag box communicates with the first water pipe, the second water pipe, and the third water pipe liquid through the square tube respectively. When the liquid pressures in the first water pipe 9100, the second water pipe 9200, and the third water pipe 9300 decrease, the liquid in the pressure-maintaining airbag box is configured to supplement the first water pipe 9100, the second water pipe 9200, and the third water pipe 9300.

[0095] In some embodiments, as shown in FIG. 9, the pressure-holding airbag box 8600 includes a pressure-holding airbag box housing 8610, an airbag 8620, and an assembly member 8630. The airbag 8620 is assembled to the pressure-holding airbag box housing 8610 via the assembly member 8630. Here, an opening 8611 is provided at the top end of the pressure-holding airbag box housing 8610. The airbag 8620 is provided within the pressure-holding airbag box housing 8610 and elastically expands and contracts according to the amount of liquid entering and exiting the airbag through the opening. The airbag 8620 is made of a flexible elastic material and can expand or contract according to the amount of liquid entering the airbag 8620. As shown in FIG. 10, the airbag 8620 includes an airbag body 8621, an airbag neck 8622, and an airbag end 8623. The airbag body 8621 is provided within the pressure-holding airbag box housing 8610 and can elastically expand and contract according to the amount of liquid entering and exiting the airbag 8620. The airbag end 8622 is provided at the top end of the airbag body 8621 and is substantially flush with the pressure-holding airbag box end. Here, the airbag end 8623 has an airbag opening 8624 for the entry and exit of liquid. The airbag neck 8622 is provided between the airbag body 8621 and the airbag end 8623 and is adapted to engage with the assembly member 8630.

[0096] In some embodiments, as shown in FIG. 11, the assembly member 8630 has a central hole 8631, and after being snapped onto the airbag neck 8622 through the central hole 8631, the airbag end 8623 is assembled to the opening of the pressure-maintaining airbag box housing 8610. The upper surface of the assembly member 8630 further has a concave surface 8632, and the concave surface 8632 is provided on the top surface of the assembly member around the central hole 8631. The concave surface 8632 is configured to match the airbag end 8623. The airbag end 8623 passes through the central hole 8631 and then matches the concave surface 8632, so that the airbag end 8623 is substantially flush with the upper surface of the assembly member 8630. The assembly member 8630 further includes an edge 8633, and the edge 8633 extends around the outside of the top surface of the assembly member. After the assembly member 8630 is assembled to the pressure-maintaining airbag box housing opening 8611, the edge 8633 is engaged with the periphery of the pressure-maintaining airbag box housing opening 8611 and is configured to achieve the sealing inside the pressure-maintaining airbag box 8600. The pressure-maintaining airbag box further includes a cover body (not shown), and the pressure-maintaining airbag box cover body is assembled on the pressure-maintaining airbag box housing. After strongly pressing the edge 8633, the airbag 8620 is configured to be sealed inside the airbag box housing 8610.

[0097] After being reset for the first time and after the wiring and piping of the water tank assembly and the main control box are connected, first open the control button of the main control box. At this time, the first solenoid valve of the main control box is opened for a certain period of time and then closed. For example, it is opened for 2 s. Both the first solenoid valve and the second solenoid valve are closed, and the water circuit between the first solenoid valve and the second solenoid valve is filled with clean water. At this time, the water circuit is in a high-pressure state, the high-pressure switch is in a constantly triggered state, and the first solenoid valve is also closed in response to the high-pressure switch state. When the external water pipe is damaged and the liquid gradually leaks, the water pressure in the external water pipe gradually decreases, and the constantly triggered state of the high-pressure switch stops. At this time, the liquid in the pressure-maintaining airbag box is replenished into the water circuit due to the contraction of the airbag, and the decrease rate of the water pressure in the water circuit becomes slower. When the liquid in the pressure-maintaining airbag box cannot be replenished into the water circuit, until the trigger threshold of the low-pressure switch is reached, the water pressure in the water circuit continues to decrease with the leakage of the water pipe. The main controller records the first time difference t1 between the change in the high-pressure switch trigger state and the change in the low-pressure switch trigger state. When the first time difference t1 is within the first predetermined range, it is regarded as a water pipe leakage, and a water pipe leakage alarm signal is issued. Here, the first predetermined range may be set based on experimental data. For example, it is higher than 10 seconds. When t1 is higher than 10 seconds, it is regarded as a water pipe leakage, and a water pipe leakage alarm signal is issued. For example, the water pipe leakage signal lamp is lit and / or a beep sound alarm is issued.

[0098] In some embodiments, when the external water pipe bursts and liquid leaks, if the burst is not large but not in a micro-leak state, the water pressure in the external water pipe also drops rapidly, and the always-triggered state of the high-pressure switch stops. At this time, the liquid in the pressure-maintaining airbag box is replenished into the water circuit due to the contraction of the airbag, the water in the external water pipe leaks rapidly, and the pressure-maintaining airbag box only slows down the rate of decrease in the water pressure in the water circuit for a short time. When the liquid in the pressure-maintaining airbag box cannot be replenished into the water circuit, the water pressure in the water circuit drops rapidly due to the burst of the water pipe and reaches the trigger threshold of the low-pressure switch in a short time. The main controller records the second time difference t2 when the high-pressure switch and the low-pressure switch are triggered. If the second time difference t2 is within the second predetermined range, it is regarded as a water pipe burst, and a water pipe burst alarm signal is issued. For example, the second predetermined range is set based on experimental data and may be set to, for example, 3 to 10 seconds. When t2 is in the range of 3 to 10 seconds, it is regarded as a water pipe burst, and a water pipe burst alarm signal is issued, for example, lighting a water pipe burst signal lamp and / or emitting a beep sound alarm.

[0099] In some embodiments, when the second electromagnetic valve of the clean water tank is opened for normal water replenishment, the water pressure in the external water pipe drops rapidly, and the always-triggered state of the high-pressure switch stops. At this time, the liquid in the pressure-maintaining airbag box is replenished into the water circuit due to the contraction of the airbag. Since the water in the external water pipe flows fast, the pressure-maintaining airbag box only slows down the rate of decrease in the water pressure in the water circuit instantaneously. When the liquid in the pressure-maintaining airbag box cannot be replenished into the water circuit, the water pressure in the water circuit reaches the trigger threshold of the low-pressure switch within a very short time. The main controller records the third time difference t3 when the high-pressure switch and the low-pressure switch are triggered. If the third time difference t3 is within the third predetermined range, it is regarded as normal water replenishment, no alarm signal is issued, and a normal water replenishment signal is issued. Here, the third predetermined range may be set based on experimental data, for example, 0 to 3 seconds. When t3 is in the range of 0 to 3 seconds, it is regarded as normal water replenishment, and a normal water replenishment signal is issued, for example, lighting a normal water replenishment signal lamp and turning off the normal water replenishment signal lamp after the water replenishment is completed.

[0100] In some embodiments, when an external water pipe bursts and liquid leaks rapidly, at this time, due to the water pipe burst, the water flow leaks severely, and when the second solenoid valve is opened during normal water replenishment, it is close to the trigger interval of the high and low pressure trigger switch. For example, when it is within a third predetermined range, the main controller cannot determine whether it is normal water replenishment or a water pipe burst. At this time, it can be controlled according to the following control logic. The main control box further closes the second solenoid valve within a first predetermined time period, closes the first solenoid valve within a second predetermined time period, where the second predetermined time period at least partially overlaps with the first predetermined time period, and within the time period when the second predetermined time period and the first predetermined time period overlap, if the high pressure switch is continuously triggered, it is configured to determine that there is no burst in the water pipe. The at least partial overlap may be that the second predetermined time period is a part of the first predetermined time period.

[0101] As shown in FIG. 12, the detection status of the presence or absence of a water pipe rupture can be explained by a timing diagram. When the water level in the clean water tank reaches the detection level of a water presence / absence detection sensor (such as a dry well sensor), the second electromagnetic valve of the clean water tank is opened. At this time, it is recorded as the 0th second, the water in the pipe is discharged, the pressure in the pipe also drops, the low-pressure switch is triggered, and the first electromagnetic valve is opened. For example, it is recorded as the 1st second at this time, and the water in the faucet is replenished into the pipe. Then, the second electromagnetic valve is closed. For example, it is recorded as the 1.5th second at this time. After a predetermined time, the first electromagnetic valve is closed. For example, it is recorded as the 3rd second at this time. That is, after the second electromagnetic valve is closed, water is continuously injected for 1.5 seconds, and then the first electromagnetic valve is closed. During this time period, a high pressure is maintained in the pipe. That is, before replenishing water, it is detected every certain time, for example, every 2 s, whether a high-pressure state can be maintained in the pipe. After the first electromagnetic valve is closed for 1 second, it is opened. For example, it is recorded as the 4th second at this time. The first electromagnetic valve and the second electromagnetic valve are closed within 1 second. If the pipe is not damaged, the pressure in the pipe is high. If the pipe ruptures, the pressure in the pipe is not high. Therefore, if a high-pressure state can be achieved during this time period, it can be determined that there is no rupture of the water pipe. Then, for example, the second electromagnetic valve is opened at the 5th second to start normal water replenishment, and the second electromagnetic valve is closed after the clean water tank is full. Thereby, in the case of a water pipe rupture, the problem that the water leakage phenomenon is aggravated by continuous water replenishment can be avoided.

[0102] In the embodiment of the present disclosure, by adding a main control box, automatic addition of clean water to the clean water tank can be realized, manual labor can be liberated, and the cleaning efficiency can be improved. Furthermore, by adding a pressure-maintaining airbag box, when the water pipe ruptures or leaks, it can be timely determined whether the water pipe leaks or ruptures, the water source can be stopped in a timely manner, an alarm can be issued, and the risk of water flow leakage can be avoided.

[0103] In the related art, in order to enhance the cleaning effect, it is necessary to add a cleaning liquid into the clean water tank, for example, manually add the cleaning liquid. However, when clean water is automatically added to the clean water tank, it is necessary to prompt the user to manually add the cleaning liquid, which increases the cost, easily causes the omission of adding the cleaning liquid, brings inconvenience to the application of the automatic cleaning device, and reduces the cleaning efficiency.

[0104] Therefore, the embodiments of the present disclosure further provide a water automatic exchange assembly that can realize the automatic addition of clean water and the automatic addition of the cleaning liquid, improve the convenience of use for the user, automatically add clean water when the clean water tank runs out of water, automatically add a predetermined amount of the cleaning liquid, and improve the timeliness, convenience and accuracy of adding the cleaning liquid.

[0105] Specifically, the automatic water exchange assembly provided by the embodiments of the present disclosure is assembled in a self-cleaning maintenance station. As an example, as shown in FIG. 3, the automatic water exchange assembly 7000 includes a control device 7100 and a water tank assembly 7200. The control device 7100 is provided inside the water tank assembly 7200. The control device 7100 is configured to realize the automatic addition of clean water and / or the automatic addition of cleaning liquid to the water tank assembly 7200. Specifically, as shown in FIG. 13, the water tank assembly 7200 includes a water tank top shell 7300 and a clean water tank 4000. The water tank top shell 7300 covers the clean water tank 4000. A water inlet 7310, a water overflow port 7320, and a drain port 7330 are provided on the rear side of the water tank top shell 7300. The outside of the water inlet 7310 is connected to the water source supply side. The inside of the water inlet 7310 is connected to the clean water tank 4000 through a clean water tank inlet pipe 9400. A second solenoid valve 4340 is provided on the side of the clean water tank inlet pipe 9400 close to the clean water tank 400. The opening and closing of the second solenoid valve 4340 realizes the automatic addition function of clean water to the clean water tank 4000. The outside of the water overflow port 7320 communicates with the outside of the automatic water exchange assembly 7000 and is used to discharge the clean water overflowing from the clean water tank. The inside of the water overflow port 7320 is connected to the side top of the clean water tank 4000 through a clean water tank water overflow pipe 9500 and is used to guide the overflowing water. The outside of the drain port 7330 communicates with the outside of the automatic water exchange assembly 7000 and is used to discharge the sewage in the sewage tank 5000. The inside of the drain port 7330 is connected to the sewage tank drain pump 5100 of the sewage tank 5000 through a sewage tank drain pipe 9600.The clean water tank 4000 includes a clean water tank main body 4100 and a cleaning liquid tank main body 4200. As shown in FIG. 5, the clean water tank main body 4100 and the cleaning liquid tank main body 4200 can be stacked on top of each other. Preferably, the cleaning liquid tank main body 4200 is located at the upper part and contributes to transporting the cleaning liquid contained therein to the clean water tank main body 4100. Here, the inside of the clean water tank main body 4100 includes a full water detection sensor 4110. When the full water detection sensor 4110 is triggered, a predetermined amount of cleaning liquid is automatically added into the clean water tank main body 4100 under the control of the control device 7100. In some embodiments, the inside of the clean water tank main body 4100 includes a water presence / absence detection sensor. When the water presence / absence detection sensor is triggered, a predetermined amount of cleaning liquid is automatically added into the clean water tank main body 4100 under the control of the control device 7100. In this way, by installing the water quantity detection assembly (including the water presence / absence detection sensor or the full water detection sensor), it is possible to automatically add the cleaning liquid when the inside of the clean water tank main body is full of water or has no water. Of course, the water quantity detection assembly is configured to be triggered in response to the water quantity inside the clean water tank main body reaching a predetermined position between full water and no water.

[0106] In some embodiments, the clean water tank 4000 includes a clean water tank top cover 4300 that covers the clean water tank main body 4100, and the clean water tank top cover 4300 extends into the water tank top shell 7300.

[0107] In some embodiments, as shown in FIG. 13, the clean water tank top cover 4300 includes a groove 4310, and a peristaltic pump 4320 is provided in the groove 4310. The peristaltic pump 4320 is configured to pump the cleaning liquid in the cleaning liquid tank main body 4200 into the clean water tank main body 4100 under the control of the control device 7100. By providing the peristaltic pump at the top end of the clean water tank top cover 4300, the maintenance and replacement of the peristaltic pump are facilitated, the electrical connection with the control device 7100 is also facilitated, the communication wiring with the control device 7100 is shortened, and the control accuracy and timeliness are improved.

[0108] In some embodiments, as shown in FIG. 14, the peristaltic pump 4320 has a liquid inlet 4321 and a liquid outlet 4322. The liquid inlet 4321 extends through the first liquid transport pipe 4323 to a position near the bottom of the cleaning liquid tank body 4200. The liquid outlet 4321 extends into the clean water tank body 4100 through the second liquid transport pipe 4324. When the water level in the clean water tank body 4100 reaches a predetermined position, the control device 7100 pumps the cleaning liquid in the cleaning liquid tank body 4200 into the clean water tank body 4100 through the first liquid transport pipe 4323 by means of the peristaltic pump 4320, realizing the automatic addition of the cleaning liquid.

[0109] In some embodiments, as shown in FIG. 14, the cleaning liquid tank body 4200 includes a cleaning liquid passage 4130. The cleaning liquid passage 4130 extends upward from the inside of the cleaning liquid tank body 4200 along the outside of the clean water tank body 4100 to the clean water tank top cover. As shown by the arrow in FIG. 14, it is used to add the cleaning liquid into the cleaning liquid tank body. The top end of the cleaning liquid passage 4130 includes a cleaning liquid passage cover 4140. When it is necessary to add the cleaning liquid, the cleaning liquid passage cover 4140 is opened, and the cleaning liquid is added into the cleaning liquid tank body 4200.

[0110] In some embodiments, the inside of the cleaning liquid tank body 4200 includes a cleaning liquid float ball base 4210 and a cleaning liquid float ball 4220. The cleaning liquid float ball base 4210 is provided at the bottom of the cleaning liquid tank body 4200. The cleaning liquid float ball 4220 is rotatably connected to the cleaning liquid float ball base to detect the liquid level of the cleaning liquid. The cleaning liquid float ball 4220 drops under the action of gravity as the liquid level of the cleaning liquid drops. When the cleaning liquid float ball 4220 drops to a second predetermined threshold, the control device identifies whether the cleaning liquid in the cleaning liquid tank body 4200 has been used up or is being used up. At this time, if the clean water tank body 4100 is full and it is necessary to add the cleaning liquid, the control device controls the peristaltic pump not to operate and stops adding the cleaning liquid into the clean water tank body.

[0111] In some embodiments, the water tank assembly includes a cleaning liquid state indicator lamp, and when the cleaning liquid level is less than the second predetermined threshold, it is controlled to turn on the cleaning liquid state indicator lamp.

[0112] In some embodiments, the side wall of the water tank top shell extends downward along the side wall of the clean water tank, and the U-shaped structure wraps the side wall of the clean water tank body.

[0113] In some embodiments, the inside of the clean water tank body 4100 includes a clean water float ball base 4110 and a clean water float ball 4120. The clean water float ball base 4110 is provided at the bottom of the clean water tank body 4100. The clean water float ball 4120 is rotatably connected to the clean water float ball base 4110 and is configured to detect the water level. As the level of the clean water surface drops, the clean water float ball 4120 drops under the action of gravity. When the clean water float ball 4120 drops to the first predetermined threshold, the controller identifies that the clean water in the clean water tank body 4100 has been used up. When the water level is less than the first predetermined threshold, the second solenoid valve 4340 is opened by the control device, and clean water is automatically added to the clean water tank. The process of automatically adding clean water is as described in the above embodiments and will not be repeated here.

[0114] In the embodiments of the present disclosure, a full water detection sensor in the clean water tank body detects whether the clean water tank is full of water. When it is detected that the clean water tank is full of water, a predetermined amount of cleaning liquid is automatically added into the clean water tank body under the control of the control device, realizing the addition of a predetermined amount of cleaning liquid according to the amount of water in the clean water tank, and realizing automatic and accurate addition of the cleaning liquid.

[0115] In the related art, when the clean water in the water tank assembly is added until it is full, the valve for adding clean water cannot be automatically closed. As a result, the clean water overflows. Although the water automatic exchange assembly can automatically add clean water, it cannot automatically close the valve, which also causes inconvenience in the application of the water automatic exchange assembly.

[0116] Therefore, embodiments of the present disclosure can further provide a water automatic exchange assembly that realizes dual control by a floating valve structure and an associated sensor thereof, maximally avoids the risk of overflow when the clean water tank is full, and improves the safety of water automatic exchange assembly applications.

[0117] Specifically, embodiments of the present disclosure provide a water automatic exchange assembly, which is assembled in a self-cleaning maintenance station. As an example, as shown in FIG. 3, the water automatic exchange assembly 7000 includes a control device 7100 and a water tank assembly 7200. The control device 7100 is provided inside the water tank assembly 7200. The control device 7100 includes a second solenoid valve 4340 for automatic addition of clean water to the water tank assembly 7200 and / or automatic closing of clean water addition. Specifically, as shown in FIG. 13, the water tank assembly 7200 includes a clean water tank body 4100, an inlet pipe 9400 used to add clean water into the clean water tank body 4100, and a floating valve 4400 provided on the clean water tank body 4100 and moving up and down with the change of the water surface height in the clean water tank body 4100. As shown in FIG. 15, in response to the floating valve 4400 being in the first position 01, the control device controls the inlet pipe 9400 to stop adding clean water into the clean water tank body 4100. In response to the floating valve 4400 being in the second position 02, the floating valve 4400 blocks an outlet 9410 for adding water from the inlet pipe 9400 to the clean water tank body 4100.

[0118] Here, the first position 01 may be a point position or an interval position. At the first position 01, when the water surface in the clean water tank body 4100 rises, after the floating valve 4400 reaches the first position 01, the control device receives sensing information, indicating that the water surface in the clean water tank body 4100 has reached a predetermined full water position at this time. Specifically, it can be realized as follows.

[0119] In some embodiments, the water automatic exchange assembly includes a signal transmitting component 4500 configured to transmit a sensing signal and a signal sensing component 4600 configured to receive the sensing signal. Either one of the signal transmitting component 4500 and the signal sensing component 4600 is provided inside the floating body part 4420, and the other one of the signal transmitting component 4500 and the signal sensing component 4600 is provided on the inner wall of the clean water tank body 4100. That is, the signal transmitting component 4500 and the signal sensing component 4600 are provided at exchangeable positions without preventing the generation of full water sensing information. When the floating body part 4420 moves to position the floating valve 4400 at the first position, the signal sensing component 4600 is triggered, and the control device 7100 closes the second solenoid valve 4340. Further, the inlet pipe 9400 is controlled to stop adding clean water into the clean water tank body 4100. When the control device 7100 successfully closes the second solenoid valve 4340 and the inlet pipe 9400 stops adding clean water into the clean water tank body 4100, the floating valve 4400 no longer rises, that is, the function of blocking the inlet pipe is completed at once.

[0120] In some embodiments, the signal transmitting component 4500 includes a magnet, and the signal sensing component 4600 includes a Hall element. Alternatively, the signal transmitting component 4500 is an NFC reader module, and the signal sensing component 4600 is an NFC tag. The signal transmitting component 4500 is an RFID reader, and the signal sensing component 4600 is an RFID electronic tag. Although not particularly limited, any sensor capable of position sensing can be applied as an embodiment.

[0121] In some embodiments, as shown in FIG. 16, the floating valve 4400 includes a pivot rod 4410 having a first end 4411 pivotally connected to a fixed pivot shaft 4430 and pivotally connected to a fixed sleeve shell 4440 via the pivot shaft 4430. The pivot rod 4410 has a second end 4412 provided opposite to the first end 4411. The floating valve 4400 includes a floating body portion 4420 connected to the second end 4412. As the water level in the clean water tank body rises, the floating valve 4400 is configured to rotate relative to the first end 4411 of the pivot rod 4410 until the floating valve 4400 reaches the first position. Specifically, the floating body portion 4420 has a hollow structure and includes a signal transmitting component 4500 or a signal sensing component 4600 inside. The floating body portion 4420 is formed of a lightweight material such as plastic, rubber, or lightweight metal material, which easily provides an upward buoyancy force to the floating valve 4400, thereby driving the pivot rod 4410 to rotate upward. The pivot rod 4410 may have a hollow or skeleton structure and is formed of a lightweight material such as plastic, rubber, or lightweight metal material to provide an upward buoyancy force to the floating valve 4400.

[0122] In some embodiments, in response to the floating valve 4400 being in the first position 01, the water level in the clean water tank body continues to rise, and the floating part 4420 drives the pivot rod 4410 to rotate with respect to the fixed rotation axis 4430 until the floating valve 4400 is in the second position 02. When the floating valve 4400 is in the first position 01, under normal conditions, in response to the signal transmitting component 4500 and the signal sensing component 4600, the control device 7100 determines that the clean water tank is full. At this time, the second solenoid valve 4340 is closed, and the inlet pipe 9400 stops adding clean water into the clean water tank body 4100. Due to a failure of the signal transmitting component 4500 and the signal sensing component 4600, etc., the control device 7100 fails to close the second solenoid valve 4340 successfully, and the inlet pipe 9400 does not stop adding clean water into the clean water tank body 4100. At this time, the floating valve 4400 continues to rise with the water level in the clean water tank body, and the floating part 4420 drives the pivot rod 4410 to rotate with respect to the fixed rotation axis 4430 until the floating valve 4400 is in the second position 02. The first end 4411 of the floating valve 4400 blocks the outlet 9410 of the inlet pipe 9400 that injects water into the clean water tank body 4100, forcibly stops the injection operation of the water supply pipe, and avoids the risk of water overflow.

[0123] Specifically, as shown in FIG. 17, in some embodiments, the floating valve 4400 further includes a plug body 4450, which is movably connected to the first end portion 4411 of the pivot rod 4410, and is configured to move toward or away from the outlet 9410 of the inlet pipe 9400 under the pressing of the push rod 44111 at the first end portion 4411 of the pivot rod 4410, and block or open the outlet 9410 of the inlet pipe as shown in the third position 03 and the fourth position 04 in FIG. 17.

[0124] In some embodiments, as shown in FIG. 18, the plug body 4450 includes a cavity 4452, the cavity has a downward opening, the first end 4411 of the pivot rod 4410 includes a push rod 44111, the push rod 44111 is movably disposed within the cavity 4452, and the push rod 44111 is configured to press against opposite side walls of the cavity 4452 as the pivot rod 4410 rotates, thereby moving the plug body toward or away from the outlet of the inlet pipe.

[0125] In some embodiments, the water tank assembly further includes a fixed sleeve shell 4440 for accommodating the outlet 9410 of the inlet pipe 9400, the plug body 4450, and the first end 4411 of the pivot rod 4410. The fixed sleeve shell 4440 and the inlet pipe 9400 are integrally formed to avoid water leakage, and a threaded rubber gasket 9420 for sealing is provided at the connection between the fixed sleeve shell 4440 and the inlet pipe 9400 when assembled on the clean water tank body. The first end 4411 of the pivot rod 4410 is connected between opposite side walls of the fixed sleeve shell 4440 via the fixed rotating shaft 4430, and the pivot rod 4410 is configured to rotate relative to the fixed sleeve shell 4440 around the fixed rotating shaft 4430 and simultaneously push the plug body 4450 to move horizontally.

[0126] In some embodiments, as shown in FIG. 19, slides 4441 are provided on both inner side walls of the fixed sleeve shell 4440, slide rails 4453 are provided on both sides of the outer side wall of the plug body 4450, and the slide rails 4453 are slidably connected in cooperation with the slides 4441, whereby the plug body 4450 is movable along the horizontal direction and can accurately block the inlet pipe outlet 9410.

[0127] In some embodiments, as shown in FIG. 18, the plug body further includes a soft rubber gasket 4451, which is provided on an end face that abuts against the outlet 9410 of the inlet pipe. In response to the plug body 4450 moving towards or away from the outlet 9410 of the inlet pipe, the soft rubber gasket 4451 is configured to block or open the outlet 9410 of the inlet pipe. In some embodiments, as shown in FIG. 19, the outlet of the inlet pipe has a conical structure in order to cooperate with the soft rubber gasket 4451 to seal the outlet 9410 of the inlet pipe.

[0128] In some embodiments, as shown in FIG. 13, a water overflow hole is provided at the top of the clean water tank body and communicates with a water overflow port 7320 through a water overflow pipe 9500. When the clean water tank 4000 is full, if the water inlet cannot be completely blocked by detecting the first position and closing the floating valve at the second position as described above, the water in the clean water tank can be automatically discharged through the water overflow hole, the water overflow pipe 9500, and the water overflow port 7320, avoiding the inflow of clean water into the automatic water exchange assembly 7000 and damaging the components.

[0129] In the embodiments of the present disclosure, a floating valve in the clean water tank body is used to detect whether the clean water tank is full. The floating valve is provided in the clean water tank body and moves as the water level in the clean water tank body rises. When the floating valve is in the first position, the control device controls the inlet pipe to stop injecting clean water into the clean water tank body. When the floating valve is in the second position, the floating valve blocks the outlet of the inlet pipe that injects water into the clean water tank body, and further, excess water can be discharged through the water overflow hole. Through multiple control methods, it is possible to prevent the self-cleaning maintenance station from overflowing after the clean water tank is full.

[0130] In an embodiment of the present disclosure, as shown in FIG. 20, the automatic water exchange assembly includes an automatic water exchange assembly 7000, which comprises a control device 7100 and a water tank assembly 7200. The control device 7100 is provided inside the water tank assembly 7200 and is configured to realize automatic discharge of the sewage in the water tank assembly 7200. The water tank assembly 7200 includes a sewage tank main body 5100 and a drainage pump 5200 located below the sewage tank main body 5100 and configured to provide sewage discharge power. In response to the sewage in the sewage tank main body 5100 reaching a predetermined height, the control device 7100 operates the drainage pump 5200 to discharge the sewage in the sewage tank main body 5100.

[0131] In some embodiments, the water tank assembly further includes a drain pipe 5300 connected to the outlet water of the drainage pump 5200 and a drain valve 5400 provided on the drain pipe 5300 and configured to open and close the drain pipe passage.

[0132] In some embodiments, in response to the sewage in the sewage tank main body 5100 reaching a predetermined height, the control device 7100 controls the drain valve 5400 and the drainage pump 5200 to operate sequentially.

[0133] In some embodiments, the water tank assembly further includes a sewage full water detection assembly 5500, at least a part of which is provided on the sewage tank main body 5100 and is configured to detect the water level height of the sewage in the sewage tank main body.

[0134] In some embodiments, the sewage full water detection assembly 5500 includes a sewage full water floating body seat 5510 provided at the top of the sewage tank main body 5100 and a sewage full water floating body part 5520 connected to the sewage full water floating body seat 5510 and configured to move relative to the sewage full water floating body seat along with the change of the water level height of the sewage in the sewage tank main body 5100.

[0135] In some embodiments, the sewage full - water floating body part 5520 is pivotally connected to the sewage full - water floating body seat 5510, and the sewage full - water floating body part 5520 is configured to rotate relative to the sewage full - water floating body seat 5510 along with the change in the water level height of the sewage in the sewage tank body 5100.

[0136] In some embodiments, the sewage full - water detection assembly 5500 further includes a signal - transmitting component configured to transmit a sensing signal and a signal - sensing component configured to receive the sensing signal. One of the signal - transmitting component and the signal - sensing component is provided inside the sewage full - water floating body part 5520, and the other one of the signal - transmitting component and the signal - sensing component is provided on the side wall of the sewage tank body 5100. In response to the sewage in the sewage tank body 5100 reaching a predetermined height, when the sewage full - water floating body part 5520 is located at a predetermined position, the signal - sensing component is triggered to generate a trigger signal, and the trigger signal is transmitted to the control device 7100. The control device 7100 controls the drainage pump 5200 to operate to discharge the sewage in the sewage tank body 5100.

[0137] In some embodiments, the signal - transmitting component includes a magnet, and the signal - sensing component includes a Hall element.

[0138] In some embodiments, a Hall sensor is provided in the water storage chamber 2700 included in the self - cleaning maintenance station body 2000, forming a sensing signal with the Hall sensor in the sewage full - water floating body part 5520. Under the initial state of the sewage full - water floating body part 5520, the magnet in the sewage full - water floating body part 5520 is triggered together with the Hall sensor provided in the water storage chamber 2700 and the Hall sensor on the side wall of the sewage tank body 5100, which indicates that the sewage tank is assembled at a predetermined position and the sewage tank is not full of water. When more sewage is collected, the sewage full - water floating body part 5520 floats up and moves away from the Hall sensor provided in the water storage chamber 2700, which indicates that the sewage tank is full of water, the signal lamp lights up, and the pumping of sewage starts.

[0139] In some embodiments, the bottom of the sewage tank body 5100 is in the shape of a funnel, and a drain port communicating with the water inlet of the drain pump through a pipeline is provided at an end of the bottom of the sewage tank body 5100 away from the top of the sewage tank body.

[0140] Finally, it should be noted that each embodiment in this specification is described progressively, each embodiment focuses on the differences from other embodiments, and the same or similar parts between each embodiment can be referred to each other.

[0141] The above embodiments are used to illustrate the technical solutions of the present disclosure and are not intended to limit them. Although the present disclosure has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in each of the above embodiments, or equivalently replace some of their technical features. It should be understood that these modifications and replacements do not deviate from the spirit and scope of the technical solutions of each embodiment of the present disclosure corresponding to the technical solutions.

Claims

1. Comprising a control device and a water tank assembly, The control device is configured to realize automatic addition of clean water, automatic discharge of sewage, or automatic addition of cleaning liquid into the water tank assembly, The water tank assembly is configured to be assembled in the water storage chamber of the self-cleaning maintenance station, The water tank assembly includes a sewage tank, a clean water tank, and a water tank top shell. The water tank top shell substantially covers the sewage tank and the clean water tank. The water tank top shell, the sewage tank, and the clean water tank form an integral structure, A water automatic exchange assembly, wherein when the water tank assembly is assembled in the water storage chamber of the self-cleaning maintenance station, a part of the tank body of the water tank assembly is arranged outside the water storage chamber.

2. The water automatic exchange assembly according to claim 1, wherein the sewage tank and the clean water tank are provided below the water tank top shell with a preset distance interval therebetween.

3. Depressions are formed inwardly on the outer walls on the same side of the sewage tank and the clean water tank, A sewage outlet and a clean water outlet are provided penetrating upward at the top end of the depression, The sewage outlet is configured to pump sewage into the sewage tank, The clean water outlet is configured to pump clean water from the clean water tank. The water automatic exchange assembly according to claim 1.

4. A water inlet is provided on one side of the water tank top shell, The water inlet is connected to the clean water tank, and the control device realizes automatic addition of clean water to the clean water tank. The water automatic exchange assembly according to claim 1.

5. A water overflow outlet is further provided on one side of the water tank top shell, The water overflow outlet is connected to the clean water tank, When the clean water tank is full, the water in the clean water tank is automatically discharged through the water overflow outlet. The water automatic exchange assembly according to claim 1.

6. A drain outlet is further provided on one side of the water tank top shell, The drain outlet is connected to the sewage tank, When the sewage tank is full, the water in the sewage tank is automatically discharged through the drain outlet. The water automatic exchange assembly according to claim 1.

7. The water automatic exchange assembly according to claim 1, wherein a sensor configured to detect the assembly of the sewage tank and the clean water tank at a predetermined position is provided on an outer wall of the sewage tank or the clean water tank.

8. The water tank top shell includes a detachable water tank top cover, The water automatic exchange assembly according to claim 1, wherein the tops of the sewage tank and the clean water tank extend into the water tank top shell.

9. The water automatic exchange assembly according to claim 1, wherein side walls of the water tank top shell extend downward along side walls of the sewage tank and the clean water tank, forming a U-shaped structure to wrap the side walls of the sewage tank and the clean water tank.

10. The water automatic exchange assembly according to claim 1, wherein side walls of the U-shaped water tank top shell are aligned with an outer wall edge of the water storage chamber, and when the water tank assembly is assembled in the water storage chamber, the side walls of the U-shaped water tank top shell are disposed outside the water storage chamber as a whole.

11. The side wall of the sewage tank includes at least one first depression extending upward along the bottom of the sewage tank, The side wall of the clean water tank includes at least one second depression extending upward along the bottom of the clean water tank, The water automatic exchange assembly according to claim 1, wherein the first depression and the second depression are restricted to the assembly positions of the sewage tank and the clean water tank.

12. The sewage tank and the clean water tank are made of a transparent material for observing the liquid levels in the sewage tank and the clean water tank, according to any one of claims 1 to 11.

13. Inside the clean water tank, a clean water float ball base provided at the bottom of the clean water tank body, and a clean water float ball connected to the clean water float ball base, configured to detect the water level and, when the water level is less than a first predetermined threshold, control the control device to open a water inlet to automatically add clean water to the clean water tank, are provided, according to claim 1.

14. Inside the clean water tank, a cleaning liquid float ball base provided at the bottom of the cleaning liquid tank body, A cleaning liquid float ball that is connected to the cleaning liquid float ball base, detects the liquid level of the cleaning liquid, and when the liquid level is higher than a second predetermined threshold, adds the cleaning liquid to the clean water tank via a peristaltic pump under the control of the control device; and the water automatic exchange assembly according to claim 1, further provided with the cleaning liquid float ball.

15. Inside the sewage tank, A sewage float ball is provided at the top of the sewage tank, detects the liquid level of the sewage, and when the liquid level is higher than a third predetermined threshold, the control device sequentially opens the sewage pump and the drain valve to automatically discharge the sewage from the drain port to the sewage tank; the water automatic exchange assembly according to any one of claims 1 to 14, further provided with the sewage float ball.

16. Comprising a control device and a water tank assembly, The control device is provided inside the water tank assembly and is configured to realize automatic addition of clean water or automatic addition of cleaning liquid to the water tank assembly. The water tank assembly includes a water tank top shell and a clean water tank. The water tank top shell covers the clean water tank, and the clean water tank includes a clean water tank body and a cleaning liquid tank body. The clean water tank body includes a water quantity detection assembly. In response to the water quantity detection assembly detecting that the water quantity in the clean water tank body has reached a predetermined value, a predetermined quantity of cleaning liquid is automatically added from the cleaning liquid tank body into the clean water tank body under the control of the control device; the water automatic exchange assembly.

17. The clean water tank includes a clean water tank top cover covering the clean water tank body. The clean water tank top cover extends into the water tank top shell; the water automatic exchange assembly according to claim 16.

18. The clean water tank top cover includes a groove, and a peristaltic pump configured to pump the cleaning liquid in the cleaning liquid tank body into the clean water tank body under the control of the control device is provided in the groove; the water automatic exchange assembly according to claim 17.

19. The peristaltic pump includes a liquid inlet and a liquid outlet. The liquid inlet extends near the bottom of the cleaning liquid tank body via a first liquid transport pipe, and the liquid outlet extends into the clean water tank body via a second liquid transport pipe to pump the cleaning liquid in the cleaning liquid tank body into the clean water tank body; the water automatic exchange assembly according to claim 18.

20. The cleaning liquid tank body includes a cleaning liquid passage, and the cleaning liquid passage extends upward along the outside of the clean water tank body from the inside of the cleaning liquid tank body to the clean water tank top cover, and adds cleaning liquid into the cleaning liquid tank body. The automatic water exchange assembly according to claim 17.

21. Inside the cleaning liquid tank body, a cleaning liquid float ball base provided at the bottom of the cleaning liquid tank body, and a cleaning liquid float ball connected to the cleaning liquid float ball base and configured to detect the liquid level of the cleaning liquid are provided. The automatic water exchange assembly according to claim 19, wherein when the cleaning liquid level is less than a second predetermined threshold, the addition of the cleaning liquid into the clean water tank body is stopped under the control of the control device.

22. The water tank assembly includes a cleaning liquid state indicator lamp, and when the cleaning liquid level is less than the second predetermined threshold, the cleaning liquid state indicator lamp is controlled to light up. The automatic water exchange assembly according to claim 21.

23. The side wall of the water tank top shell extends downward along the side wall of the clean water tank, forming a U-shaped structure to wrap the side wall of the clean water tank body. The automatic water exchange assembly according to claim 16.

24. Inside the clean water tank body, a clean water float ball base provided at the bottom of the clean water tank body, and a clean water float ball connected to the clean water float ball base and configured to detect the water level are provided. The automatic water exchange assembly according to claim 16, wherein when the water level is less than a first predetermined threshold, the control device opens a water inlet and is configured to automatically add clean water to the clean water tank.

25. The water quantity detection assembly includes a full water detection sensor. Responding to the detection by the water quantity detection assembly that the water quantity has reached a predetermined value includes responding to the detection by the full water detection sensor that the water quantity in the clean water tank body has reached or is approaching the full water quantity. The automatic water exchange assembly according to any one of claims 16 to 24.

26. The water quantity detection assembly includes a water presence / absence detection sensor. Responding to the detection by the water quantity detection assembly that the water quantity has reached a predetermined value includes responding to the detection by the water presence / absence detection sensor that the water quantity in the clean water tank body has reached zero water quantity. The water automatic exchange assembly according to any one of claims 16 to 24.

27. A self-cleaning maintenance station having a water storage chamber, wherein the water storage chamber is used to accommodate the water automatic exchange assembly according to any one of claims 1 to 26.

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