Cleaning device liquid storage tank, automatic cleaning device, and cleaning base
The liquid-blocking member in the liquid storage tank of cleaning devices blocks water flow to the overflow port, addressing the issue of improper liquid replenishment in intelligent cleaning robots, ensuring efficient and waste-free operation.
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- BEIJING ROCKROBO TECH CO LTD
- Filing Date
- 2024-08-22
- Publication Date
- 2026-07-01
AI Technical Summary
The issue with current intelligent cleaning robots is that cleaning liquid, such as water, tends to flow along the top wall of the liquid storage tank and is easily discharged via the overflow port, preventing normal replenishment.
A liquid-blocking member is positioned between the liquid inlet and overflow port to block the flow of liquid along the cavity wall, ensuring it does not enter the overflow port, thereby maintaining normal liquid replenishment.
This solution prevents water discharge via the overflow port, ensuring normal water replenishment and avoiding waste, while allowing smooth injection and discharge processes.
Smart Images
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Abstract
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present disclosure claims priority to Chinese patent application No. 202322318575.5, filed on August 25, 2023, and the entire content disclosed in the aforementioned Chinese patent application is hereby incorporated by reference as a part of the present disclosure.TECHNICAL FIELD
[0002] The present disclosure relates to the field of self-moving cleaning devices, and specifically to a liquid storage tank of a cleaning device, an automatic cleaning device and a cleaning docking station.BACKGROUND
[0003] With the continuous development of science and technology, intelligent cleaning robots have entered the ordinary family life and gradually achieved popularity.
[0004] In current intelligent cleaning robots, there is a robot that can automatically mop the floor. To ensure that mopping cloth of the robot remains wet, a liquid storage tank shall be provided inside the robot to automatically replenish cleaning liquid such as water. An overflow port is generally provided near a liquid inlet of the liquid storage tank to facilitate smooth discharge of water from the liquid storage tank and smooth inflow of water into the liquid storage tank.
[0005] However, when the cleaning liquid such as water is injected into the liquid storage tank via the liquid inlet, the water is prone to flow along the top wall in the liquid storage tank due to tension, which causes the injected water to be easily discharged from the liquid storage tank via the overflow port. As a result, the liquid storage tank cannot be replenished with water normally.SUMMARY
[0006] In view of this, embodiments of the present disclosure provide a liquid storage tank of a cleaning device, an automatic cleaning device and a cleaning docking station, which mainly aims to avoid cleaning liquid from being discharged via an overflow port when the cleaning liquid is injected into the liquid storage tank, thereby enabling normal liquid replenishment of the liquid storage tank.
[0007] In a first aspect, the embodiments of the present disclosure provide a liquid storage tank of a cleaning device, including: a tank body, including an accommodating cavity, and a liquid inlet, a liquid outlet and an overflow port communicated with the accommodating cavity respectively, where the liquid inlet and the overflow port are provided adjacent to each other; and a liquid-blocking member, provided in the accommodating cavity and located between the liquid inlet and the overflow port.
[0008] In an embodiment, the liquid-blocking member is configured to block liquid that flows into the accommodating cavity via the liquid inlet from flowing into the overflow port.
[0009] In an embodiment, the accommodating cavity includes a cavity wall opposite to the liquid inlet; and the liquid-blocking member is connected to the cavity wall.
[0010] In an embodiment, the liquid-blocking member is of a plate structure, and the liquid-blocking member is erected between the liquid inlet and the overflow port, and extends along a flowing direction of the liquid that flows into the accommodating cavity via the liquid inlet.
[0011] In an embodiment, the liquid-blocking member includes a first end and a second end arranged in sequence along the flowing direction of the liquid that flows into the accommodating cavity via the liquid inlet, where the second end is bent, in a direction towards the overflow port, relative to the first end.
[0012] In an embodiment, the tank body includes a first housing and a second housing, where the first housing and the second housing are connected with each other in a sealing manner, and form the accommodating cavity in a surrounding manner; and the liquid inlet, the liquid outlet and the overflow port are provided on the first housing respectively; and an inner surface of the second housing is opposite to the liquid outlet; and one side of the liquid-blocking member is connected to the inner surface of the second housing, and another side of the liquid-blocking member is connected to or spaced apart from an inner surface of the first housing; and the inner surface of the second housing is the cavity wall.
[0013] In an embodiment, the liquid-blocking member is integrally formed with and connected with the second housing.
[0014] In an embodiment, the first housing and the second housing are ultrasonically welded or bonded with a sealant.
[0015] In an embodiment, the liquid inlet includes a first tubular column and a second tubular column, where the first tubular column is located in the accommodating cavity, and one end of the first tubular column is connected to the inner surface of the first housing; the second tubular column is located outside the accommodating cavity, one end of the second tubular column is connected to an outer surface of the first housing; and the first tubular column is communicated with the second tubular column; and another end of the first tubular column is opposite to the cavity wall.
[0016] In an embodiment, the overflow port includes a third tubular column and a fourth tubular column, where the third tubular column is located in the accommodating cavity, one end of the third tubular column is connected to the inner surface of the first housing, and another end of the third tubular column is opposite to the cavity wall; the fourth tubular column is located outside the accommodating cavity, one end of the fourth tubular column is connected to the outer surface of the first housing, and the third tubular column is communicated with the fourth tubular column; and the liquid-blocking member is provided between the first tubular column and the third tubular column.
[0017] In a second aspect, the embodiments of the present disclosure further provide an automatic cleaning device including the aforementioned liquid storage tank of the cleaning device.
[0018] In a third aspect, the embodiments of the present disclosure further provide a cleaning docking station including the aforementioned liquid storage tank of the cleaning device.
[0019] By means of the above technical solutions, the present disclosure at least has the following beneficial effects.
[0020] In the technical solutions provided by the embodiments of the present disclosure, the liquid-blocking member is provided between the liquid inlet and the overflow port, enabling that the liquid-blocking member can block water that flows along the cavity wall of the accommodating cavity due to tension from entering the overflow port when the cleaning liquid such as water is injected into the accommodating cavity of the tank body via the liquid inlet. This prevents the injected water from being discharged from the tank body via the overflow port, thereby ensuring normal water replenishment of the liquid storage tank and also avoiding waste of water.BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The following accompanying drawings of the present disclosure are taken herein as a part of the embodiments of the present disclosure for the purpose of understanding the present disclosure. The accompanying drawings illustrate embodiments of the present disclosure and descriptions thereof for explaining the principles of the present disclosure.
[0022] In the accompanying drawings: FIG.1 is a schematic diagram of an overall structure of a liquid storage tank of a cleaning device provided in an embodiment of the present disclosure; FIG. 2 is a schematic diagram of a local structure of a first housing of a liquid storage tank of a cleaning device provided in an embodiment of the present disclosure; FIG. 3 is a schematic diagram of a local structure of a liquid storage tank of a cleaning device provided in an embodiment of the present disclosure; and FIG. 4 is a schematic sectional view of a liquid storage tank of a cleaning device provided in an embodiment of the present disclosure. Descriptions of reference numerals:
[0023] 1-tank body; 11-liquid inlet; 12-liquid outlet; 13-overflow port; 2-liquid-blocking member; 21-first end; 22-second end; 14-first housing; 15-second housing; 111-first tubular column; 112-second tubular column; 131-third tubular column; and 132-fourth tubular column.DETAILED DESCRIPTION
[0024] In the following description, a large number of specific details are given to provide more thorough understanding of the present disclosure. However, it may be apparent to those skilled in the art that the present disclosure can be implemented without one or more of these details. In other examples, some technical features that are well known in the art will not be described to avoid confusion with the present disclosure.
[0025] It should be noted that the terms used herein are merely intended to describe specific embodiments and are not intended to limit exemplary embodiments according to the present disclosure. As used here, the singular form is also intended to include the plural form, unless the context clearly indicates otherwise. In addition, it should also be understood that when used in this specification, the terms "comprising" and / or "including" may indicate the presence of features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or combinations thereof.
[0026] Exemplary embodiments according to the present disclosure are described now in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present disclosure thorough and complete, and to fully communicate the ideas of these exemplary embodiments to those ordinary skilled in the art.
[0027] As shown in FIG. 1 to FIG. 4, embodiments of the present disclosure provide a liquid storage tank of a cleaning device that can be applied to a self-moving cleaning device, such as a sweeping robot, a mopping robot, a floor polishing robot, a weeding robot, and the like. The liquid storage tank of the cleaning device may include a tank body 1 and a liquid-blocking member 2. The tank body 1 includes an accommodating cavity, and a liquid inlet 11, a liquid outlet 12 and an overflow port 13 connected to the accommodating cavity respectively. The liquid inlet 11 and the overflow port 13 are provided adjacent to each other, and the accommodating cavity includes a cavity wall opposite to the liquid inlet 11. The liquid-blocking member 2 is provided in the accommodating cavity and is located between the liquid inlet 11 and the overflow port 13, and configured to block liquid that flows into the accommodating cavity via the liquid inlet 11 from flowing into the overflow port 13.
[0028] In the liquid storage tank of the cleaning device provided by the embodiments of the present disclosure, the liquid-blocking member 2 is provided between the liquid inlet 11 and the overflow port 13, enabling that the liquid-blocking member 2 can block cleaning liquid such as water that flows along the cavity wall of the accommodating cavity due to tension from entering the overflow port 13 when the cleaning liquid such as water is injected into the accommodating cavity of the tank body 1 via the liquid inlet 11. This prevents the injected water from being discharged from the tank body 1 via the overflow port 13, thereby ensuring normal water replenishment of the liquid storage tank and also avoiding waste of water.
[0029] Specifically, the liquid inlet 11 may be provided at one end of the tank body 1 and configured to inject cleaning fluid, such as water, into the accommodating cavity of the tank body 1; the liquid outlet may be provided at another end of the tank body 1 and configured to discharge water from the accommodating cavity; and the overflow port 13 may be provided adjacent to the liquid inlet 11 and configured to discharge liquid outwards when a liquid level in the accommodating cavity is too high, thereby keeping pressure in the accommodating cavity normal, and the overflow port 13 may also be configured for air discharge or air inflow when the tank body 1 is injected with water or water is discharged from the tank body 1. Specifically, when the water is injected into the accommodating cavity via the liquid inlet 11, the accommodating cavity may discharge gas via the overflow port 13 to maintain the balance of air pressure in the accommodating cavity, thereby enabling that the injection of water is carried out smoothly. When it is required to discharge water from the tank body 1, a water suction device such as a water pump can be connected to the liquid outlet 12 to pump out the water in the accommodating cavity, during which the accommodating cavity is fed with air via the overflow port 13 to maintain the balance of air pressure in the accommodating cavity, thereby enabling that the discharge of water is carried out smoothly.
[0030] In some embodiments, the accommodating cavity may include a cavity wall opposite to the liquid inlet 11, and the liquid-blocking member 2 is connected to the cavity wall.
[0031] In aforesaid embodiments, the liquid-blocking member 2 is connected to the cavity wall opposite to the liquid inlet 11. Therefore, when the water that enters the accommodating cavity via the liquid inlet 11 flows along the cavity wall due to tension, the liquid-blocking member 2 can directly block the water that enters via the liquid inlet 11 and flows along the cavity wall. Thus, it is ensured that the water does not flow to the overflow port 13, thereby better preventing the injected water from being discharged from the tank body 1 via the overflow port 13, then ensuring normal water replenishment of the liquid storage tank and also avoiding waste of water.
[0032] The liquid-blocking member 2 may be of various structural forms, as long as it is capable of blocking the liquid that flows into the accommodating cavity via the liquid inlet 11 from flowing into the overflow port 13.
[0033] In some embodiments, referring to FIGS. 3 and 4, the liquid-blocking member 2 may specifically be of a plate structure. The liquid-blocking member 2 is erected between the liquid inlet 11 and the overflow port 13, and extends along a flowing direction of the liquid that flows into the accommodating cavity via the liquid inlet 11.
[0034] In aforesaid embodiments, the liquid-blocking member 2 is of a plate structure and extends along the flowing direction of the liquid that flows into the accommodating cavity via the liquid inlet 11. In this way, when the water injected into the accommodating cavity of the tank body 1 via the liquid inlet 11 flows along the cavity wall opposite to the liquid inlet 11 due to tension, the water that is intended to flow to the overflow port 13 can flow along the liquid-blocking member 2 under the blockage of the liquid-blocking member 2, and cannot flow into the overflow port 13 at the other side of the liquid-blocking member 2, which prevents the water from being discharged via the overflow port 13, and thus achieves the better blocking effect on the water. The structure is simple but reliable in use.
[0035] In order to make water flow smoothly into the accommodating cavity of the tank body 1 under the action of the liquid-blocking member 2, in some embodiments, referring to FIG. 3, the liquid-blocking member 2 may include a first end 21 and a second end 22 which are arranged in sequence along the flowing direction of the liquid that flows into the accommodating cavity via the liquid inlet 11, and the second end 22 is bent, in a direction towards the overflow port 13, relative to the first end 21.
[0036] In aforesaid embodiments, the second end 22 of the liquid-blocking member 2 is bent, in the direction towards the overflow port 13, relative to the first end 21 of the liquid-blocking member 2. As a result, when the water flows along the liquid-blocking member 2 to the second end 22 under the blockage of the liquid-blocking member 2, the water can flow smoothly into the accommodating cavity under the guiding effect of the second end 22, thereby further ensuring that water injection of the tank body 1 is carried out smoothly.
[0037] Furthermore, on a surface of a side of the liquid-blocking member 2 facing the liquid inlet 11, the first end 21 may be smoothly transitioned with and the second end 22 at the connection between the first end 21 and the second end 22, thereby further improving the guiding effect of the second end 22 on the water.
[0038] In some embodiments, referring to FIGS. 1 and 4, the tank body 1 may include a first housing 14 and a second housing 15. The first housing 14 and the second housing 15 are connected with each other in a snap-fit manner, and form the accommodating cavity of the tank body 1 in a surrounding manner; the liquid inlet 11, the liquid outlet 12 and the overflow port 13 are provided on the first housing 14 respectively; the inner surface of the second housing 15 is opposite to the liquid outlet 12, and the inner surface of the second housing 15 is the cavity wall described above. One side of the liquid-blocking member 2 may be connected to the inner surface of the second housing 15, and another side of the liquid-blocking member 2 is connected to or spaced apart from the inner surface of the first housing 14.
[0039] In aforesaid embodiments, the inner surface of the second housing 15 is opposite to the liquid outlet 12, and one side of the liquid-blocking member 2 is connected to the inner surface of the second housing 15. As a result, when the water flows along the inner surface of the second housing 15 due to tension, the water can be blocked by the liquid-blocking member 2 connected to the inner surface of the second housing 15, enabling the water to flow along the liquid-blocking member 2 and not to flow to the overflow port 13, thereby preventing the water from being discharged via the overflow port 13.
[0040] The water may flow along the inner surface of the second housing 15 due to tension when the water is injected into the tank body 1 via the liquid inlet 11. Thus, the connection of the liquid-blocking member 2 to the inner surface of the second housing 15 can serve to block the water from flowing to the overflow port at the other side of the liquid-blocking member 2. Whereas the relationship between the liquid-blocking member 2 and the first housing 14 has no effect on blocking, by the liquid-blocking member 2, of the water from flowing to the overflow port 13. For example, the liquid-blocking member 2 may be directly connected to, indirectly connected to or abutted against the inner surface of the first housing 14, or the liquid-blocking member 2 is spaced apart from the inner surface of the first housing 14, none of which will affect the blocking effect of the liquid-blocking member 2 on the water. Thus, the relationship between the liquid-blocking member 2 and the first housing 14 can be selected according to actual needs during specific implementation, which is not limited in the present application. In order to improve the structural strength of the tank body 1, the liquid-blocking member 2 may be directly connected to or abutted against the inner surface of the first housing 14.
[0041] In aforesaid embodiments, the tank body 1 is formed by sealing connection of the first housing 14 and the second housing 15, which facilitates the processing and manufacturing of the tank body 1. Moreover, when the liquid storage tank of the cleaning device is in use, the first housing 14 may be provided at a lower portion, and the second housing 15 may be provided at an upper portion, thereby facilitating the water injection and discharge of the tank body 1.
[0042] In some embodiments, referring to FIG. 4, the liquid-blocking member 2 may be integrally formed with and connected with the second housing 15. On the one hand, the reliability of the liquid-blocking member 2 in blocking water can be improved, and on the other hand, the strength of the second housing 15 can be improved, thereby improving the overall strength of the tank body 1.
[0043] In some embodiments, the first housing 14 and the second housing 15 may be connected by ultrasonic welding or bonded by a sealant. The first housing 14 and the second housing 15 can be connected together by ultrasonic welding, and the ultrasonic welding not only enables the first housing 14 and the second housing 15 to be connected and assembled together, but also has a moisture-resistant and water-resistant sealing effect, which improves the sealing of connection between the first housing 14 and the second housing 15. Of course, the first housing 14 and the second housing 15 may also be bonded by the sealant, which also ensures the sealing of the connection between the first housing 14 and the second housing 15.
[0044] In some embodiments, referring to FIGS. 2 and 4, the liquid inlet 11 may include a first tubular column 111 and a second tubular column 112. The first tubular column 111 is located in the accommodating cavity, and one end of the first tubular column 111 is connected to an inner surface of the first housing 14. The second tubular column 112 is located outside the accommodating cavity, and one end of the second tubular column 112 is connected to an outer surface of the first housing 14. The first tubular column 111 is communicated with the second tubular column 112, and another end of the first tubular column 111 is opposite to the cavity wall.
[0045] In aforesaid embodiments, the first tubular column 111 of the liquid inlet 11 is located in the accommodating cavity, and another end of the first tubular column 111 may be located at the highest position of the accommodating cavity. That is, there may be a small distance between the another end of the first tubular column 111 and the inner surface of the second housing 15, thereby avoiding that water flows out of the accommodating cavity due to water pressure problems. The second tubular column 112 is located outside the accommodating cavity, and may be configured to be connected with an external water source, thereby enabling water injection into the accommodating cavity.
[0046] It will be appreciated that the first housing 14 is provided with a through hole between the first tubular column 111 and the second tubular column 112, thereby enabling communication between the first tubular column 111 and the second tubular column 112.
[0047] In some embodiments, referring to FIGS. 2 and 4, the overflow port 13 may include a third tubular column 131 and a fourth tubular column 132. The third tubular column 131 is located in the accommodating cavity, one end of the third tubular column 131 is connected to the inner surface of the first housing 14, and another end of the third tubular column 131 is opposite to the cavity wall. The fourth tubular column 132 is located outside the accommodating cavity, one end of the fourth tubular column 132 is connected to the outer surface of the first housing 14. The third tubular column 131 is communicated with the fourth tubular column 132; and the liquid-blocking member 2 is provided between the first tubular column 111 and the third tubular column 131.
[0048] In aforesaid embodiments, the third tubular column 131 of the overflow port 13 is located in the accommodating cavity, and another end of the third tubular column 131 may be located at the highest position of the accommodating cavity. That is, there may be a small distance between the another end of the third tubular column 131 and the inner surface of the second housing 15, thereby avoiding that the water flows out of the accommodating cavity due to water pressure problems. The fourth tubular column 132 is located outside the accommodating cavity, and may be configured for air suction or discharge, thereby achieving the injection of water into the accommodating cavity or the discharge of water from the accommodating cavity.
[0049] It will be appreciated that the first housing 14 is also provided with a through hole between the third tubular column 131 and the fourth tubular column 132, thereby achieving communication between the third tubular column 131 and the fourth tubular column 132.
[0050] Embodiments of the present disclosure further provide an automatic cleaning device including the aforementioned liquid storage tank of the cleaning device. Specifically, the automatic cleaning device may be a sweeping robot, a mopping robot, a floor polishing robot, or a weeding robot. Specifically, when the automatic cleaning device is the mopping robot, cleaning liquid, such as water, that overflows from the overflow port 13 of the tank body 1 can flow into mopping cloth, or a special collection device of the robot.
[0051] The automatic cleaning device provided by the embodiments of the present disclosure includes the aforementioned liquid storage tank of the cleaning device. Therefore, the automatic cleaning device has all the beneficial effects of the liquid storage tank of the cleaning device, which will not be repeated here.
[0052] Embodiments of the present disclosure further provide a cleaning docking station, which includes the aforementioned liquid storage tank of the cleaning device, or the aforementioned automatic cleaning device. In this case, cleaning liquid such as water that overflows from the overflow port 13 may flow through a pipe to a cleaning tank, a drainage pipe, a waste water tank, or a special collection device, or may flow to a washing tray of the docking station to be pumped away by a waste water pump.
[0053] The cleaning docking station provided by the embodiments of the present disclosure includes the aforementioned liquid storage tank of the automatic cleaning device or the automatic cleaning device. Therefore, the cleaning docking station has all the beneficial effects of the liquid storage tank of the cleaning device, which will not be repeated here.
[0054] The present disclosure has been illustrated by aforesaid embodiments, but it should be understood that the aforesaid embodiments are merely for the purpose of illustration and explanation, and are not intended to limit the present disclosure to the scope of the embodiments as described. Further, it may be understood by those skilled in the art that the present disclosure is not limited to the aforesaid embodiments and that a greater variety of variations and modifications may be made in accordance with the teachings of the present disclosure, and all the variations and modifications fall within the scope of protection as claimed by the present disclosure. The scope of protection of the present disclosure is defined by the appended claims and their equivalent scopes.
Claims
1. A liquid storage tank of a cleaning device, <b>characterized in comprising: a tank body, comprising an accommodating cavity, and a liquid inlet, a liquid outlet and an overflow port communicated with the accommodating cavity respectively, wherein the liquid inlet and the overflow port are provided adjacent to each other; and a liquid-blocking member, provided in the accommodating cavity, and located between the liquid inlet and the overflow port.
2. The liquid storage tank of the cleaning device according to claim 1, wherein the liquid-blocking member is configured to block liquid that flows into the accommodating cavity via the liquid inlet from flowing into the overflow port.
3. The liquid storage tank of the cleaning device according to claim 1, wherein the accommodating cavity comprises a cavity wall opposite to the liquid inlet; and the liquid-blocking member is connected to the cavity wall.
4. The liquid storage tank of the cleaning device according to claim 3, wherein the liquid-blocking member is of a plate structure, and the liquid-blocking member is erected between the liquid inlet and the overflow port, and extends along a flowing direction of liquid that flows into the accommodating cavity via the liquid inlet.
5. The liquid storage tank of the cleaning device according to claim 4, wherein the liquid-blocking member comprises a first end and a second end arranged in sequence along the flowing direction of the liquid that flows into the accommodating cavity via the liquid inlet, wherein the second end is bent, in a direction towards the overflow port, relative to the first end.
6. The liquid storage tank of the cleaning device according to claim 3, wherein the tank body comprises a first housing and a second housing, wherein the first housing and the second housing are sealingly connected with each other, and form the accommodating cavity in a surrounding manner; the liquid inlet, the liquid outlet and the overflow port are provided on the first housing respectively; and an inner surface of the second housing is opposite to the liquid outlet; one side of the liquid-blocking member is connected to the inner surface of the second housing, and another side of the liquid-blocking member is connected to or spaced apart from an inner surface of the first housing; and the inner surface of the second housing is the cavity wall.
7. The liquid storage tank of the cleaning device according to claim 6, wherein the liquid-blocking member is integrally formed with and connected with the second housing.
8. The liquid storage tank of the cleaning device according to claim 6, wherein the first housing and the second housing are ultrasonically welded or bonded with a sealant.
9. The liquid storage tank of the cleaning device according to claim 6, wherein the liquid inlet comprises a first tubular column and a second tubular column, wherein the first tubular column is located in the accommodating cavity, and one end of the first tubular column is connected to the inner surface of the first housing; and the second tubular column is located outside the accommodating cavity, one end of the second tubular column is connected to an outer surface of the first housing, and the first tubular column is communicated with the second tubular column; and another end of the first tubular column is opposite to the cavity wall.
10. The liquid storage tank of the cleaning device according to claim 9, wherein the overflow port comprises a third tubular column and a fourth tubular column, wherein the third tubular column is located in the accommodating cavity, one end of the third tubular column is connected to the inner surface of the first housing, and another end of the third tubular column is opposite to the cavity wall; the fourth tubular column is located outside the accommodating cavity, one end of the fourth tubular column is connected to the outer surface of the first housing, and the third tubular column is communicated with the fourth tubular column; and the liquid-blocking member is provided between the first tubular column and the third tubular column.
11. An automatic cleaning device, characterized in< / b> comprising the liquid storage tank of the cleaning device according to any one of claims 1 to 10.
12. A cleaning docking station, characterized in comprising the liquid storage tank of the cleaning device according to any one of claims 1 to 10.