CLEANING DEVICE LIQUID STORAGE TANK, AUTOMATIC CLEANING DEVICE, AND CLEANING BASE STATION

Abstract

This utility certificate discloses a liquid storage tank of a cleaning device, an automatic cleaning device and a cleaning base station, relates to the technical field of cleaning devices and mainly aims to prevent cleaning liquid from being discharged through an overflow port when the cleaning liquid is injected into the liquid storage tank, thereby enabling normal liquid replenishment of the liquid storage tank. The main technical solution of this utility certificate is as follows.The liquid storage tank of the cleaning device comprises: a tank body including an accommodating cavity, and a liquid inlet, a liquid outlet, and an overflow port communicating 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, and configured to prevent liquid flowing into the accommodating cavity via the liquid inlet from flowing into the overflow port.

Description

Title of Invention: CLEANING DEVICE LIQUID STORAGE TANK, AUTOMATIC CLEANING DEVICE, AND CLEANING BASE STATION Technical field

[0001] This utility certificate relates to the field of autonomously moving cleaning devices, and in particular to a liquid storage tank of a cleaning device, an automatic cleaning device and a cleaning base station. TECHNOLOGICAL BACKGROUND

[0002] With the continuous development of science and technology, intelligent cleaning robots have entered ordinary family life and become more and more popular.

[0003] In current intelligent cleaning robots, there is a robot that can automatically clean the floor. To ensure that the cleaning cloth of the robot remains wet, a liquid storage tank must 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 entry of water into the liquid storage tank.

[0004] 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 upper wall of the liquid storage tank due to the tension, which allows 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 OF THE UTILITY CERTIFICATE

[0005] In view of the above, embodiments of the present utility certificate provide a liquid storage tank of a cleaning device, an automatic cleaning device and a cleaning base station, mainly aimed at preventing the cleaning liquid from being discharged from an overflow port when the cleaning liquid is injected into the storage tank of liquid, thus allowing normal liquid replenishment of the liquid storage tank.

[0006] In a first aspect, embodiments of the present utility certificate provide a liquid storage tank of a cleaning device, comprising:

[0007] a tank body, comprising a receiving cavity, and a liquid inlet, a liquid outlet and an overflow port communicating with the receiving cavity, respectively, wherein the liquid inlet and the overflow port are provided adjacent to each other; and

[0008] a liquid blocking element, provided in the receiving cavity and located between the liquid inlet and the overflow port, and configured to prevent liquid flowing into the receiving cavity via the liquid inlet from flowing into the overflow port.

[0009] Further, the receiving cavity comprises a cavity wall opposite the liquid inlet; and

[0010] the liquid blocking element is connected to the cavity wall.

[0011] Furthermore, 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 flow direction of the liquid flowing into the receiving cavity via the liquid inlet.

[0012] Further, the liquid blocking member comprises a first end and a second end arranged in sequence along the flow direction of the liquid flowing into the receiving cavity via the liquid inlet, wherein the second end is bent, in a direction toward the overflow port, relative to the first end.

[0013] Further, the tank body comprises a first housing and a second housing, wherein the first housing and the second housing are connected to each other in a sealing manner, and form the receiving cavity in a surrounding manner; and

[0014] 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 the liquid outlet; and

[0015] a first side of the liquid blocking element is connected to the interior surface of the second housing, and another side of the liquid blocking element is connected to or spaced from an interior surface of the first housing; and

[0016] the inner surface of the second housing is the cavity wall.

[0017] Furthermore, the liquid blocking element is formed integrally with the second box and connected to it.

[0018] Further, the first housing and the second housing are ultrasonically welded or bonded with a sealing material.

[0019] Further, the liquid inlet comprises a first tubular column and a second tubular column, wherein the first tubular column is located in the receiving cavity, and a first end of the first tubular column is connected to the inner surface of the first housing; the second tubular column is located outside the receiving cavity, a first end of the second tubular column is connected to an outer surface of the first housing; and the first tubular column is in communication with the second tubular column; and

[0020] another end of the first tubular column is opposite the cavity wall.

[0021] Further, the overflow port comprises a third tubular column and a fourth tubular column, where

[0022] the third tubular column is located in the receiving cavity, a first 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 the wall of the cavity;

[0023] the fourth tubular column is located outside the receiving cavity, a first 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

[0024] the liquid blocking element is provided between the first tubular column and the third tubular column.

[0025] In a second aspect, the embodiments of the present utility certificate further provide an automatic cleaning device comprising the liquid storage tank of the above-mentioned cleaning device.

[0026] In a third aspect, the embodiments of the present utility certificate further provide a cleaning base station comprising the liquid storage tank of the above-mentioned cleaning device.

[0027] By means of the above technical solutions, the present utility certificate has at least the following beneficial effects.

[0028] In the technical solutions provided by the embodiments of the present utility certificate, the liquid blocking member is provided between the liquid inlet and the overflow port, allowing the liquid blocking member to block water flowing along the cavity wall of the receiving cavity due to tension from entering the overflow port when the cleaning liquid, such as water, is injected into the receiving cavity of the tank body via the liquid inlet. This prevents the injected water from being discharged from the tank body via the port overflow, thus ensuring normal replenishment of water to the liquid storage tank and also avoiding water waste. Brief description of the drawings

[0029] The following appended drawings of this utility certificate are taken herein within the scope of the embodiments of this utility certificate for the purpose of understanding this utility certificate. The appended drawings illustrate embodiments of this utility certificate and descriptions thereof to explain the principles of this utility certificate.

[0030] In the attached drawings:

[0031] [Fig.l] is a schematic diagram of an overall structure of a liquid storage tank of a cleaning device according to an embodiment of this utility certificate;

[0032] [Fig.2] is a schematic diagram of a local structure of a first housing of a liquid storage tank of a cleaning device according to an embodiment of this utility certificate;

[0033] [Fig. 3] is a schematic diagram of a local structure of a liquid storage tank of a cleaning device according to an embodiment of this utility certificate; and

[0034] [Fig.4] is a schematic sectional view of a liquid storage tank of a cleaning device according to an embodiment of this utility certificate.

[0035] Description of the numerical references:

[0036] 1-tank body; 11-liquid inlet; 12-liquid outlet; 13-overflow port; 2-liquid blocking element; 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

[0037] In the following description, many specific details are given to provide a more thorough understanding of this utility certificate. However, it may be obvious to those skilled in the art that this utility certificate may be implemented without one or more of these details. In other examples, certain technical features well known in the art will not be described to avoid confusion with this utility certificate.

[0038] It should be noted that the terms used herein are intended only to describe specific embodiments and are not intended to limit exemplary embodiments according to this utility certificate. As used herein, the singular form is also intended to include the plural form, unless the context indicates clearly the opposite. Furthermore, it should also be understood that when used in this description, the terms "comprising" and / or "including" may indicate the presence of features, assemblies, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, assemblies, steps, operations, elements, components and / or combinations thereof.

[0039] Exemplary embodiments according to this utility certificate will now be described 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 shown herein. It should be understood that these embodiments are provided to make the disclosure of this utility certificate thorough and complete, and to fully communicate the ideas of these exemplary embodiments to those skilled in the art.

[0040] As shown in Figures 1 to 4, embodiments of the present utility model provide a liquid storage tank of a cleaning device that can be applied to an autonomously moving cleaning device, such as a sweeping robot, a cleaning robot, a floor polishing robot, a weeding robot, and the like. The liquid storage tank of the cleaning device may comprise a tank body 1 and a liquid blocking member 2. The tank body 1 comprises 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 comprises a cavity wall opposite the liquid inlet 11.The liquid blocking member 2 is provided in the receiving cavity and is located between the liquid inlet 11 and the overflow port 13, and is configured to prevent liquid that flows into the receiving cavity via the liquid inlet 11 from flowing into the overflow port 13.

[0041] In the liquid storage tank of the cleaning device provided by the embodiments of the present utility certificate, the liquid blocking member 2 is provided between the liquid inlet 11 and the overflow port 13, enabling the liquid blocking member 2 to block the cleaning liquid, such as water, which flows along the cavity wall of the receiving cavity due to tension from entering the overflow port 13 when the cleaning liquid, such as water, is injected into the receiving 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 preventing water waste.

[0042] More specifically, the liquid inlet 11 may be provided at one end of the reservoir body 1 and configured to inject a cleaning fluid, such as water, into the receiving cavity of the reservoir body 1; the liquid outlet may be provided at another end of the reservoir body 1 and configured to discharge water from the receiving cavity; and the overflow port 13 may be provided adjacent to the liquid inlet 11 and configured to discharge liquid to the outside when a liquid level in the receiving cavity is too high, thereby maintaining the pressure in the receiving cavity normal, and the overflow port 13 may also be configured for air discharge or air inflow when water is injected into the reservoir body 1 or water is discharged from the reservoir body 1.Specifically, when water is injected into the receiving cavity via the liquid inlet 11, the receiving cavity can discharge gas via the overflow port 13 to maintain the air pressure balance in the receiving cavity, thereby enabling the water injection to be performed smoothly. When it is necessary 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 water into the receiving cavity, during which pumping the receiving cavity is supplied with air via the overflow port 13 to maintain the air pressure balance in the receiving cavity, thereby enabling the water discharge to be performed smoothly.

[0043] In some embodiments, the receiving cavity may comprise a cavity wall opposite the liquid inlet 11, and the liquid blocking element 2 is connected to the cavity wall.

[0044] In the above-mentioned embodiments, the liquid blocking member 2 is connected to the cavity wall opposite the liquid inlet 11. Therefore, when the water that enters the receiving 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, thereby ensuring normal water replenishment of the liquid storage tank and also preventing water waste.

[0045] The liquid blocking member 2 may be of various structural forms, as long as it is capable of preventing the liquid that flows into the receiving cavity via the liquid inlet 11 from flowing into the overflow port 13.

[0046] In some embodiments, referring to Figures 3 and 4, the liquid blocking element 2 may be specifically of a plate structure. The element liquid blockage 2 is erected between the liquid inlet 11 and the overflow port 13, and extends along a flow direction of the liquid which flows into the receiving cavity via the liquid inlet 11.

[0047] In the above-mentioned embodiments, the liquid blocking member 2 is of a plate structure and extends along the flow direction of the liquid that flows into the receiving cavity via the liquid inlet 11. In this way, when the water injected into the receiving cavity of the tank body 1 via the liquid inlet 11 flows along the cavity wall opposite the liquid inlet 11 due to tension, the water that is intended to flow toward the overflow port 13 can flow along the liquid blocking member 2 under the blocking of the liquid blocking member 2, and cannot flow into the overflow port 13 on the other side of the liquid blocking member 2, thereby preventing the water from being discharged via the overflow port 13. overflow 13, and thus achieves the best blocking effect on water. The structure is simple but reliable in use.

[0048] In order to ensure that water flows smoothly into the receiving 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 comprise a first end 21 and a second end 22 which are arranged in sequence along the flow direction of the liquid flowing into the receiving cavity via the liquid inlet 11, and the second end 22 is bent, in a direction toward the overflow port 13, relative to the first end 21.

[0049] In the above-mentioned embodiments, the second end 22 of the liquid blocking member 2 is bent, in the direction toward the overflow port 13, relative to the first end 21 of the liquid blocking member 2. Accordingly, when water flows along the liquid blocking member 2 to the second end 22 under the blocking of the liquid blocking member 2, the water can smoothly flow into the receiving cavity under the guiding effect of the second end 22, thereby ensuring that the water injection of the tank body 1 is performed smoothly.

[0050] Furthermore, on a surface of one side of the liquid blocking member 2 facing the liquid inlet 11, the first end 21 can smoothly transition with 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.

[0051] In some embodiments, referring to Figures 1 and 4, the tank body 1 may comprise a first housing 14 and a second housing 15. The first housing 14 and the second housing 15 are connected to each other in a manner by snap-fit, and form the receiving 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 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.

[0052] In the above-mentioned embodiments, the inner surface of the second housing 15 is opposite the liquid outlet 12, and a first side of the liquid blocking member 2 is connected to the inner surface of the second housing 15. Accordingly, when 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, allowing the water to flow along the liquid blocking member 2 and not flow to the overflow port 13, thereby preventing the water from being discharged via the overflow port 13.

[0053] Water may flow along the inner surface of the second housing 15 due to tension when 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 may serve to prevent water from flowing to the overflow port at the other side of the liquid blocking member 2. However, the relationship between the liquid blocking member 2 and the first housing 14 has no effect on the liquid blocking member 2 blocking the flow of water to the overflow port 13.For example, the liquid blocking member 2 may be directly connected, indirectly connected, 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 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.

[0054] In the above-mentioned embodiments, the tank body 1 is formed by sealingly connecting the first housing 14 and the second housing 15, which facilitates the processing and manufacturing of the tank body 1. In addition, when the liquid storage tank of the cleaning device is used, the first housing 14 may be provided at a lower portion, and the second housing 15 may be provided at the level of an upper part, thus facilitating the injection and discharge of water from the tank body 1.

[0055] In some embodiments, referring to [Fig. 4], the liquid blocking member 2 may be integrally formed with and connected to the second housing 15. On the one hand, the reliability of the liquid blocking member 2 in blocking water may be improved, and on the other hand, the strength of the second housing 15 may be improved, thereby improving the overall strength of the tank body 1.

[0056] In some embodiments, the first housing 14 and the second housing 15 may be connected by ultrasonic welding or bonded by a sealing material. The first housing 14 and the second housing 15 may 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 joined together, but also has a moisture-proof and waterproof sealing effect, which improves the tightness of the 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 sealing material, which also ensures the tightness of the connection between the first housing 14 and the second housing 15.

[0057] In some embodiments, referring to Figures 2 and 4, the liquid inlet 11 may comprise a first tubular column 111 and a second tubular column 112. The first tubular column 111 is located in the receiving cavity, and a first end of the first tubular column 111 is connected to an interior surface of the first housing 14. The second tubular column 112 is located outside the receiving cavity, and a first end of the second tubular column 112 is connected to an exterior surface of the first housing 14. The first tubular column 111 is in communication with the second tubular column 112, and another end of the first tubular column 111 is opposite the cavity wall.

[0058] In the above-mentioned embodiments, the first tubular column 111 of the liquid inlet 11 is located in the receiving cavity, and another end of the first tubular column 111 may be located at the highest position of the receiving cavity. That is, there may be a small distance between the other end of the first tubular column 111 and the inner surface of the second housing 15, thereby avoiding water flowing out of the receiving cavity due to water pressure problems. The second tubular column 112 is located outside the receiving cavity, and may be configured to be connected to an external water source, thereby enabling water injection into the receiving cavity.

[0059] The first housing 14 is appreciably provided with a through hole between the first tubular column 111 and the second tubular column 112, thereby allowing communication between the first tubular column 111 and the second tubular column 112.

[0060] In some embodiments, referring to Figures 2 and 4, the overflow port 13 may comprise a third tubular column 131 and a fourth tubular column 132. The third tubular column 131 is located in the receiving cavity, a first 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 the cavity wall. The fourth tubular column 132 is located outside the receiving cavity, a first end of the fourth tubular column 132 is connected to the outer surface of the first housing 14. The first tubular column 111 is in communication with the second tubular column 112; and the liquid blocking member 2 is provided between the first tubular column 111 and the third tubular column 131.

[0061] In the above-mentioned embodiments, the third tubular column 131 of the overflow port 13 is located in the receiving cavity, and another end of the third tubular column 131 may be located at the highest position of the receiving cavity. That is, there may be a small distance between the other end of the third tubular column 131 and the inner surface of the second housing 15, thereby avoiding water flowing out of the receiving cavity due to water pressure problems. The fourth tubular column 132 is located outside the receiving cavity, and may be configured for air suction or discharge, thereby realizing the injection of water into the receiving cavity or the discharge of water from the receiving cavity.

[0062] The first housing 14 is also appreciably provided with a through hole between the third tubular column 131 and the fourth tubular column 132, thereby providing communication between the third tubular column 131 and the fourth tubular column 132.

[0063] Embodiments of the present utility certificate further provide an automatic cleaning device comprising the above-mentioned liquid storage tank of the cleaning device. More specifically, the automatic cleaning device may be a sweeping robot, a cleaning robot, a floor polishing robot, or a weeding robot. Specifically, when the automatic cleaning device is the cleaning robot, cleaning liquid, such as water, which overflows from the overflow port 13 of the tank body 1 may flow into the cleaning cloth, or a special collection device of the robot.

[0064] The automatic cleaning device provided by the embodiments of this utility certificate comprises the above-mentioned 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.

[0065] Embodiments of this utility certificate further provide a cleaning base station, which includes the above-mentioned liquid storage tank of the cleaning device, or the above-mentioned 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 base station to be pumped by a waste water pump.

[0066] The cleaning base station provided by the embodiments of this utility certificate comprises the above-mentioned liquid storage tank of the automatic cleaning device or the automatic cleaning device. Therefore, the cleaning base station has all the beneficial effects of the liquid storage tank of the cleaning device, which will not be repeated here.

[0067] This utility certificate has been illustrated by embodiments mentioned above, but it should be understood that the embodiments mentioned above are for illustration and explanation purposes only, and are not intended to limit this utility certificate to the scope of the described embodiments. Furthermore, those skilled in the art can understand that this utility certificate is not limited to the embodiments mentioned above and that a wider variety of variations and modifications may be made in accordance with the teachings of this utility certificate, and that all variations and modifications fall within the scope of protection claimed by this utility certificate. The scope of protection of this utility certificate is defined by the appended claims and their equivalent scopes.

Claims

Claims

1. A liquid storage tank of a cleaning device, characterized in that it comprises: a tank body (1), comprising a receiving cavity, and a liquid inlet (11), a liquid outlet (12) and an overflow port (13) communicating with the receiving cavity, respectively, wherein the liquid inlet (11) and the overflow port (13) are provided adjacent to each other; and a liquid blocking member (2), provided in the receiving cavity, and located between the liquid inlet (11) and the overflow port (13).

2. The liquid storage tank of the cleaning device according to claim 1, wherein the liquid blocking member (2) is configured to prevent liquid flowing into the receiving cavity via the liquid inlet (11) from flowing into the overflow port (13).

3. A liquid storage tank of the cleaning device according to claim 1, wherein the receiving cavity comprises a cavity wall opposite the liquid inlet (11); and the liquid blocking member (2) is connected to the cavity wall.

4. The liquid storage tank of the cleaning device according to claim 3, wherein the liquid blocking member (2) is of a plate structure, and the liquid blocking member (2) is erected between the liquid inlet (11) and the overflow port (13), and extends along a liquid flow direction which flows into the receiving cavity via the liquid inlet (11).

5. A liquid storage tank of the cleaning device according to claim 4, wherein the liquid blocking member (2) comprises a first end (21) and a second end (22) arranged in sequence along the flow direction of the liquid flowing into the receiving cavity via the liquid inlet, wherein the second end (22) is bent, in a direction toward the overflow port (13), relative to the first end (21).

6. The liquid storage tank of the cleaning device according to claim 3, wherein the tank body (1) comprises a first housing (14) and a second housing (15), wherein the first housing (14) and the second housing (15) are connected to each other in a sealed manner, and form the accommodating cavity 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; and an inner surface of the second housing (15) is opposite to the liquid outlet (12); one side of the liquid blocking member (2) is 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 an inner surface of the first housing (14); and the inner surface of the second housing (15) is the cavity wall.

7. A liquid storage tank of the cleaning device according to claim 6, wherein the liquid blocking member (2) is integrally formed with and connected to the second housing (15).

8. The liquid storage tank of the cleaning device according to claim 6, wherein the first housing (14) and the second housing (15) are ultrasonically welded or bonded with a sealing material.

9. The liquid storage tank of the cleaning device according to claim 6, wherein the liquid inlet (11) comprises a first tubular column (111) and a second tubular column (112), wherein the first tubular column (111) is located in the accommodating cavity, and a first end of the first tubular column (111) is connected to the inner surface of the first housing (14); and the second tubular column (112) is located outside the accommodating cavity, a first end of the second tubular column (112) is connected to an outer surface of the first housing (14), and the first tubular column (111) is in communication with the second tubular column (112); and another end of the first tubular column (111) is opposite the cavity wall.

10. The liquid storage tank of the cleaning device according to claim 9, wherein the overflow port (13) comprises a third tubular column (131) and a fourth tubular column (132), wherein 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 the wall of the cavity; 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), and 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).;

11. An automatic cleaning device, characterized in that it comprises the liquid storage tank of the cleaning device according to any one of claims 1 to 10.

12. A cleaning base station, characterized in that it comprises the liquid storage tank of the cleaning device according to any one of claims 1 to 10.

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