Water tank and cleaning device

Abstract

A water tank (100) and a cleaning device. In the water tank (100), a second tank body (2) having a first chamber (23) is mounted in a first tank body (1), and a second chamber (11) is formed between the second tank body (2) and the first tank body (1), such that the water tank (100) has at least two chambers to implement storage of clean liquid and waste liquid. Moreover, the second tank body (2) comprises a flexible portion (21), wherein the flexible portion (21) can flexibly deform such that the volume ratio between the first chamber (23) and the second chamber (11) can be relatively changed, thereby guaranteeing the liquid storage capacity, avoiding the waste of space, and ensuring the cleaning effect and compact design of the water tank (100). The second tank body (2) also comprises a rigid portion (22), wherein the rigid portion (22) has a stable shape and structure and can be used as a mounting carrier of parts such as functional mechanisms, thereby providing stable mounting space and support.

Description

Water tank and cleaning equipment Technical Field

[0001] The utility model belongs to the technical field of cleaning equipment, in particular to a water tank and cleaning equipment. Background Art

[0002] Existing cleaning equipment generally needs to be equipped with a water tank, but the existing cleaning equipment generally arranges the clean water tank and the sewage tank separately. The dirty liquid generated after the clean liquid in the clean water tank is discharged for operation is sucked into the sewage tank. As the cleaning work progresses, the clean liquid in the clean water tank gradually decreases, and the dirty liquid in the sewage tank gradually increases. The clean water tank and the sewage tank will not be filled at the same time, resulting in a waste of water tank volume space. The water tank usually takes up a large space in the cleaning equipment, resulting in a large size of the cleaning equipment, which easily limits the passability of the cleaning equipment and has high space requirements for the use environment, especially not conducive to use in a small space. However, if the water storage capacity is sacrificed and a small water tank is used to keep the cleaning equipment small, it will result in a small amount of clean water per unit area, or it will be necessary to frequently add clean liquid to the water tank of the cleaning equipment and discharge dirty liquid, which will deteriorate the cleaning effect or user experience.

[0003] Utility Model Content

[0004] The purpose of the utility model is to provide a water tank and cleaning equipment, which can improve the space utilization and cleaning effect of the water tank and the cleaning equipment.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a water tank, comprising:

[0006] a first housing; and

[0007] a second box body installed in the first box body; the second box body has a first cavity, and the second cavity is formed between the outer wall of the second box body and the inner wall of the first box body;

[0008] The second housing includes a hard portion and a soft portion, the hard portion and the soft portion are connected to form the first chamber, and the soft portion is deformable to change the volume ratio of the first chamber and the second chamber;

[0009] One of the first chamber and the second chamber is used to accommodate clean liquid, and the other is used to accommodate dirty liquid.

[0010] Optionally, the hardware part has a first accommodating area with a first opening at one end, the soft part is arranged at the first opening, and the first accommodating area and the soft part form the first chamber;

[0011] When the soft part is recessed in the first accommodating area, the hard part has a mounting portion staggered from the soft part, and the mounting portion is used for mounting functional mechanisms of the first cavity and / or the second cavity.

[0012] Optionally, when the soft body part is not recessed in the first accommodating area, the soft body part has a second accommodating area with a second opening at one end, and the second opening of the soft body part is sealedly connected to the first opening of the hard body part; and the first accommodating area and the second accommodating area are communicated to form the first chamber.

[0013] Optionally, when the soft body portion is not recessed in the first accommodating area, the first opening is located above the soft body portion.

[0014] Optionally, the first opening is arranged at an angle.

[0015] Optionally, the side wall of the upper end of the hardware part is provided with an inwardly recessed avoidance area, the mounting part includes the avoidance area, and the avoidance area is located above the software part.

[0016] Optionally, the functional mechanism includes a sewage suction channel, and the avoidance area and the inner wall of the first box body enclose at least part of the sewage suction channel, and / or the avoidance area is used for the installation of at least part of the sewage suction channel; one end of the sewage suction channel is connected to the outside of the water tank, and the other end is connected to a negative pressure device, and the negative pressure device is suitable for pumping the sewage suction channel into a negative pressure so as to suck the dirty liquid into a chamber for accommodating the dirty liquid through the sewage suction channel.

[0017] Optionally, the first chamber is used to contain clean liquid, and the second chamber is used to contain dirty liquid.

[0018] Optionally, it also includes a gas-liquid separation device arranged in the avoidance area, the gas-liquid separation device includes a shell, the shell has a liquid inlet, an air outlet and a liquid drain, the liquid inlet is connected to the sewage suction channel; the liquid drain is connected to the chamber for accommodating dirty liquid, and the air outlet is connected to the air inlet of the negative pressure extraction device.

[0019] Optionally, the gas-liquid separation device includes at least one deflection component arranged in the shell, the deflection component has at least one arc-shaped surface, the arc-shaped surface is recessed from the liquid inlet side toward the air outlet side, and the fluid in the sewage suction channel passes through the liquid inlet and the arc-shaped surface in turn, and the liquid in the fluid is discharged through the liquid discharge port, and the gas in the fluid is discharged through the air outlet.

[0020] Optionally, the liquid discharge port is located below the arc-shaped surface, and the air outlet is located above the arc-shaped surface.

[0021] Optionally, the deflection component includes at least one first deflection plate, the liquid discharge port and the air outlet are located on one side of the first deflection plate, the liquid inlet is located on the other side of the first deflection plate, one end of the first deflection plate is fixed to the shell, and a connecting port is formed between the other end and the side wall of the shell, so that the cavities in the shell located on both sides of the first deflection plate are connected.

[0022] Optionally, the deflection component includes a second deflector, the air outlet is arranged on the side wall of the shell, the liquid discharge port is arranged on the bottom wall of the shell, and the arc surface of the second deflector is arranged on the inner wall surface of the side wall where the air outlet is located.

[0023] Optionally, a guide portion is provided at one end of the first deflector close to the connecting port, and the guide portion is bent toward the arc-shaped surface of the rear first deflector or the second deflector located on the air flow path.

[0024] Optionally, the hardware portion is provided with an overflow port communicating with the first chamber and the second chamber, and the overflow port is located on the fluid flow path of the sewage suction channel.

[0025] Optionally, a second liquid level monitoring component suitable for monitoring a preset maximum liquid level in the second chamber is installed in the second chamber, and the preset maximum liquid level monitored by the second liquid level monitoring component is lower than the drain port, the drain port is lower than the air outlet, and the drain port is lower than the overflow port.

[0026] Optionally, the sewage suction channel includes a first section and a second section connected to the first section, the second section is enclosed between the avoidance area and the inner wall of the first box body, and / or the avoidance area is provided for the installation of the second section, the second section is connected to the negative pressure extraction device, and the first section is connected to the outside of the water tank.

[0027] Optionally, the gas-liquid separation device is arranged in the second section, the liquid discharge port is arranged on the bottom wall of the second section, and the second section extends in the horizontal direction.

[0028] Optionally, the upper end outlet of the first section connected to the second section is lower than the drainage port.

[0029] Optionally, the first section is formed on the outer side wall of the first box body; or, the first section is defined by a portion of the outer side wall of the hardware part and a portion of the inner side wall of the first box body.

[0030] Optionally, the water tank is installed in a cleaning device, and the cleaning device also includes a cleaning component, a sewage suction port and a sewage discharge port, the sewage suction port is used to suck dirty liquid on the cleaning component or dirty liquid on the working surface cleaned by the cleaning component; the sewage discharge port connects the sewage suction port and the sewage suction channel to suck the dirty liquid into the second chamber; the sewage suction port is arranged with the sewage discharge port as the center along a preset direction of the cleaning component, and the first section extends in a vertical direction and is formed with a lower end inlet connected to the sewage discharge port.

[0031] Optionally, the functional mechanism of the first chamber includes:

[0032] a valve adapted to be opened in one direction to connect the first chamber and the second chamber, so that the clean liquid flows to the chamber containing the dirty liquid;

[0033] and / or,

[0034] a delivery pipeline assembly, used for connecting the first chamber with the outside of the water tank;

[0035] and / or,

[0036] The first liquid level monitoring component is used to monitor the liquid level in the first chamber.

[0037] Optionally, the top wall of the hardware part is further provided with a third opening connected to the first chamber, and the third opening includes a placement space for accommodating a fixed platform and a reserved operating space; the fixed platform is installed on the mounting part, and the fixed platform is used for installing the functional mechanism of the first chamber.

[0038] Optionally, the valve core of the valve is installed on the bottom wall of the hardware part, one end of the valve stem of the valve is movably provided on the fixed platform, the other end of the valve stem is connected to the valve core, and the pull ring of the valve is installed on one end of the valve stem and exposed at the third opening. The valve stem is driven to move by the pull ring, driving the valve core on the bottom of the valve stem to move to open or close the valve.

[0039] Optionally, part of the fixed platform is formed as a water and electricity compartment, and a connecting component suitable for external connection of at least part of the functional mechanism is sealed and installed in the water and electricity compartment.

[0040] Optionally, the water tank further includes a protective bracket, which is installed in the second chamber; when the soft body part is not recessed in the first accommodating area, the protective bracket is used to support the soft body part; the protective bracket is provided with a through water-permeable hole, which connects the side of the protective bracket facing the soft body part and the side facing away from the soft body part.

[0041] Optionally, the protective bracket has a first slope on the side facing the soft body part, and the position of the first slope close to the functional mechanism is lower than the position of the first slope away from the functional mechanism. The first slope is suitable for fitting with the bottom surface of the soft body part to guide the liquid in the first chamber to flow toward the functional mechanism of the first chamber.

[0042] Optionally, the first chamber is used to hold clean liquid, and the second chamber is used to hold dirty liquid; the first box body is provided with a sewage outlet connecting the second chamber with the outside of the water tank, and the bottom of the second chamber has a second slope, and the position of the second slope close to the sewage outlet is lower than the position of the second slope away from the sewage outlet, and the second slope is suitable for guiding the dirty liquid in the second chamber to flow toward the sewage outlet.

[0043] Optionally, the second box body is detachably installed in the first box body.

[0044] In order to achieve the real-time purpose and other related purposes, the utility model also provides a water tank, including:

[0045] The first box body has a liquid storage cavity;

[0046] an isolation component installed in the first housing, the isolation component having a soft portion that separates the liquid storage chamber into a first chamber and a second chamber whose volume ratios can be relatively variable; one of the first chamber and the second chamber is used to hold clean liquid, and the other is used to hold dirty liquid; and

[0047] a protective bracket, the protective bracket being installed in the first box, the protective bracket being located on a side of the soft body portion facing away from the concave direction of the soft body portion, and supporting the soft body portion;

[0048] The protective bracket is provided with a through water-permeable hole, and the water-permeable hole is suitable for connecting the side of the protective bracket facing the soft body part and the side facing away from the soft body part.

[0049] Optionally, a one-way opening valve is provided on the isolation component, and when the valve is opened, the first chamber and the second chamber are connected, so that the clean liquid flows to the chamber containing the dirty liquid.

[0050] Optionally, the isolation component is detachably installed in the first box.

[0051] Optionally, the first chamber and the second chamber are distributed in a vertical direction; the first chamber is located above the second chamber, and the first chamber is used to contain clean liquid, and the second chamber is used to contain dirty liquid.

[0052] Optionally, the protective bracket has a first slope on the side facing the soft part, and the position of the first slope close to the functional mechanism of the first chamber is lower than the position of the first slope away from the functional mechanism, and the first slope is suitable for fitting with the bottom surface of the soft part to guide the liquid in the first chamber to flow toward the functional mechanism of the first chamber.

[0053] In order to achieve the real-time purpose and other related purposes, the utility model also provides a cleaning device, including the water tank as described above.

[0054] As described above, the technical solution provided by the present invention has at least the following beneficial effects: the second box body having a first chamber is installed in the first box body, and a second chamber is formed between the second box body and the first box body, so that the water tank has at least two chambers to realize the storage of clean liquid and dirty liquid, and the second box body has a soft part, which can be flexibly deformed so that the volume ratio between the first chamber and the second chamber can change relatively, which not only ensures the liquid storage amount, but also avoids space waste, which is conducive to ensuring the cleaning effect of the water tank and the small volume production of the water tank; the second box body also has a hard part, the shape and structure of the hard part is stable, and it can serve as an installation carrier for components such as functional mechanisms, so as to provide stable installation space and support. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] FIG1 is a schematic structural diagram of a water tank embodiment 1 of the present invention;

[0056] FIG2 is a top view of the water tank in FIG1 ;

[0057] FIG3 is a cross-sectional view of the section AA in FIG2 ;

[0058] FIG4 is a cross-sectional view at BB in FIG2 ;

[0059] FIG5 is a schematic diagram of an explosion of the water tank in FIG1 ;

[0060] FIG6 is a schematic diagram of the assembly of the second box and the protective bracket in FIG5 ;

[0061] FIG7 is a front view of the second box and the protective bracket in FIG6;

[0062] FIG8 is an exploded schematic diagram of the second box and the protective bracket in FIG6 ;

[0063] FIG9 is a schematic structural diagram of the hardware portion in FIG8 ;

[0064] FIG10 is a schematic diagram of a partial structure of the second box in FIG6;

[0065] FIG11 is a top view of a partial structure of the second box in FIG10 ;

[0066] FIG12 is a schematic structural diagram of the water tank in FIG1 installed in the cleaning equipment;

[0067] FIG13 is a front view of the water tank in FIG1 installed in the cleaning equipment;

[0068] FIG14 is a schematic diagram of the partial structure of the water tank embodiment 2 of the present invention;

[0069] FIG15 is a schematic diagram of the partial structure of the third embodiment of the water tank of the present invention.

[0070] Part Number Description Water tank 100, first box body 1, second chamber 11, box cover 12, sewage outlet 13, second inclined surface 14, second box body 2, Soft part 21, second opening 211, hardware part 22, third opening 221, fixed platform 222, avoidance area 223, first opening 224, hydropower warehouse 225, first chamber 23, first accommodating area 231, second accommodating area 232, overflow port 24, handle 25, conveying pipeline assembly 31, first liquid level monitoring component 32, valve 33, valve core 331, valve stem 332, pull ring 333, negative pressure extraction device 41, gas-liquid separation device 42, shell 421, liquid inlet 4211, air outlet 4212, liquid discharge port 4213, deflection component 43, arcuate surface 431, sewage suction channel 5, first section 51, lower end inlet 511, upper end outlet 512, second section 52, protective bracket 6, water permeable hole 61, first inclined surface 62, isolation component 7, cleaning equipment 8, cleaning component 81, sewage discharge port 82. DETAILED DESCRIPTION

[0071] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0072] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0073] Referring to Figures 1 to 5, 12, and 13, in some optional embodiments, the present application provides a water tank comprising a first tank body 1 and a second tank body 2. The second tank body 2 is installed within the first tank body 1; the second tank body 2 has a first chamber 23, and a second chamber 11 is formed between the outer wall of the second tank body 2 and the inner wall of the first tank body 1; wherein the second tank body 2 comprises a hard portion 22 and a soft portion 21, the hard portion 22 and the soft portion 21 being connected to form the first chamber 23, and the soft portion 21 is deformable to change the volume ratio of the first chamber 23 to the second chamber 11.

[0074] The hard part can be made of a material that is less likely to deform when subjected to the force of the fluid, and the soft part can be made of a material that is more likely to deform when subjected to the force of the fluid. This allows the soft part to deform when subjected to the force of the liquid in the first chamber or the second chamber, thereby changing the volume ratio of the first chamber and the second chamber.

[0075] Optionally, the soft portion 21 may be a component having a flexible deformation function or an elastic deformation function. It is understood that the flexible deformation function means that the soft portion 21 can be flexibly deformed, but the surface area of ​​the soft portion 21 does not change, and the soft portion 21 will not be pulled or easily torn. The elastic deformation function means that the soft portion 21 can be elastically deformed. Under the action of an external force, the soft portion 21 can expand to increase its surface area. When the external force disappears, the surface area of ​​the soft portion 21 shrinks and returns to its initial state. The shape, structure, and material of the soft portion 21 can be flexibly selected according to needs.

[0076] For example, the second box structure formed by the hardware portion 22 and the software portion 21 is shown in Figure 3. When the first chamber 23 contains liquid and the second chamber 11 does not, the software portion 21 is in the state shown in Figure 3 due to the force exerted by the liquid in the first chamber 23. As the amount of liquid in the second chamber 11 increases, the liquid in the second chamber 11 also exerts a force on the software portion 21. At any position of the software portion, the first force exerted by the liquid in the second chamber 11 on the software portion 21 is directed toward the first chamber 23, and the second force exerted by the liquid in the first chamber 23 on the software portion 11 is directed toward the second chamber 11. When the first force is greater than the second force, the software portion deforms, concaving from the state shown in Figure 3 toward the first chamber 23, reducing the volume of the second chamber 11 and increasing the volume of the first chamber 23, thereby changing the volume ratio between the first chamber 23 and the second chamber 11. The above is merely illustrative and does not constitute a specific limitation on the solutions provided in the embodiments of this specification.

[0077] The arrangement and connection method of the hardware portion 22 and the software portion 21 in the second housing 2 are not limited. For example, the hardware portion may be a shell with an opening, with the software portion covering at least a portion of the hardware portion and the entire opening of the hardware portion. Alternatively, the second housing 2 may include multiple, unconnected sections of hardware, with the software portion disposed between the hardware portions, secured to the hardware portions with screws or glue to form the first chamber 23.

[0078] The volume of the first box body 1 can be set to be fixed. For example, the first box body 1 is a hard part as a whole; the first box body 1 can also be not limited to being a hard part as a whole. Cleaning equipment is usually equipped with a water tank containing chamber, and the inner wall of the containing chamber is a hard part as a whole, which is used to limit the volume of the first box body 1 from changing. Of course, the volume of the first box body 1 can also be set to be changeable, so as to change the volume of the water tank as a whole according to the demand for the liquid to be contained in the water tank as a whole; accordingly, changing the volume ratio of the first chamber 23 and the second chamber 11 can mean that when the volume of the first box body 1 is fixed at a certain value, as the soft part 21 deforms, the volume of the first chamber 23 increases and the volume of the second chamber 11 decreases; or, when the volume of the first box body 1 is fixed at a certain value, as the soft part 21 deforms, the volume of the first chamber 23 decreases and the volume of the second chamber 11 increases.

[0079] The water tank and the cleaning device can be separable structures. The water tank can also be fixed in the cleaning device, for example, the shell of the first box body 1 can be formed by the wall of the accommodating chamber of the water tank of the cleaning device.

[0080] The second box body 2 is detachably installed in the first box body 1, and is easy to disassemble and assemble, so that the second box body 2 can be taken out and the first box body 1 or the second box body 2 can be cleaned. After the cleaning equipment has been cleaning for a period of time, dirt and residue are likely to remain on the walls of the first box body 1 and / or the second box body 2, and the functional mechanisms in the water tank. If not cleaned properly, they are likely to become moldy and smelly. By detachably installing the second box body 2 in the first box body 1, it is convenient for users to take out the second box body 2 and clean the first box body 1, the second box body 2 and the functional mechanisms in the water tank, effectively reducing the phenomenon of mold and odor in the water tank. At the same time, taking out the second box body 2 can also facilitate the maintenance of the functional mechanisms in the water tank. Of course, the second box body 2 can also be fixedly installed in the first box body 1, which is not limited here.

[0081] One of the first chamber 11 and the second chamber 23 is used to contain clean liquid, and the other is used to contain dirty liquid.

[0082] For example, a water tank can be installed on a cleaning robot. The cleaning liquid can be, for example, clean water or a cleaning liquid with added disinfectant or decontaminant, without limitation. The cleaning liquid in the water tank can be added to the cleaning robot's rag to perform floor cleaning. The dirty liquid can be, for example, dirty liquid sucked from the cleaning robot's rag. Typically, during the cleaning process of the cleaning robot on the floor, the cleaning liquid gradually decreases and the dirty liquid gradually increases. Based on the water tank provided in the embodiments of this specification, the second housing has a soft portion that can flexibly deform so that the volume ratio between the first chamber and the second chamber can change relative to each other. In the case where one of the first chamber and the second chamber is used to hold cleaning liquid and the other is used to hold dirty liquid, the above structure can gradually reduce the volume of the chamber holding the cleaning liquid and gradually increase the volume of the chamber holding the dirty liquid, thereby meeting cleaning requirements and improving user experience without changing the overall volume of the water tank. Of course, the above scenario examples are only preferred examples and do not constitute a limitation of the embodiments of this specification. For example, the water tank can also be installed on a cleaning base station.

[0083] The water tank provided in the embodiments of this specification not only ensures the liquid storage capacity to meet cleaning needs, but also reduces the space required for cleaning equipment by the water tank. Furthermore, in the water tank of the above embodiment, the second box body 2 is installed in the first box body 1, making the second box body 2 relatively independent of the first box body 1, making the installation of the box body more flexible. For example, the second box body 2 can be fixedly connected to the first box body 1 or detachably connected. In addition, the second box body 2 has a hard body portion 22. The shape and structure of the hard body portion 22 are stable and can serve as an installation carrier, providing stable installation space and support for components, which is conducive to improving the overall reliability of the water tank.

[0084] Referring to Figures 3, 5, 8 and 9, in some optional embodiments, the hardware part 22 has a first accommodating area 231 with a first opening 224 at one end, and the soft part 21 is arranged at the first opening 224. The first accommodating area 231 and the soft part 21 form a first chamber 23; when the soft part 21 is recessed in the first accommodating area 231, the hardware part 22 has an installation part staggered from the soft part 21, and the installation part is for installing the functional mechanism of the first chamber 23 and / or the second chamber 11.

[0085] Functional mechanisms may refer to water pipes, liquid level detection mechanisms, valves, gas-liquid separation structures, control circuits, and the like. When the soft part is deformed, it may interfere with the functional mechanisms in the water tank, causing damage to the soft part, or the soft part may affect the normal operation of the valve, liquid level detection mechanism, and gas-liquid separation structure. The water tank of this embodiment is arranged so that when the soft part 21 is recessed in the first accommodating area 231, the hard part 22 has a mounting portion that is staggered from the soft part 21. The mounting portion is provided for mounting the functional mechanisms of the first chamber 23 and / or the second chamber 11. This can prevent the soft part 21 from interfering with the functional mechanisms, ensure the normal operation of the functional mechanisms, avoid possible damage to the soft part, and improve the reliability of the water tank.

[0086] The soft portion 21 may be a thin film covering the first opening 224 .

[0087] Alternatively, the soft body part 21 may also be formed with a cavity, such as a soft bag, a soft shell or other structural forms with a cavity, see Figures 3, 5, 8 and 9. In some optional embodiments, when the soft body part 21 is not recessed in the first accommodating area 231, the soft body part 21 has a second accommodating area 232 with a second opening 211 at one end, and the second opening 211 of the soft body part 21 is sealedly connected to the first opening 224 of the hard body part 22; and the first accommodating area 231 and the second accommodating area 232 are communicated to form a first chamber 23.

[0088] Alternatively, the hardware portion 22 and the software portion 21 may be sealed together by bonding, fastening, or other methods. Furthermore, the software portion 21 may be partially covered over the portion of the hardware portion 22 protruding from the edge of the first opening 224, and then the software portion 21 and the hardware portion 22 may be fastened together with screws to squeeze the portion where the software portion 21 and the hardware portion 22 are connected, thereby forming a seal. The flexible material of the software portion 21 itself is utilized to achieve the seal, resulting in a simple structure and a simple and convenient sealing connection. Alternatively, the software portion 21 and the hardware portion 22 may be sealed together by applying glue and fastening, resulting in a reliable sealing connection.

[0089] In the water tank of the above embodiment, the soft part 21 is a structural form that can form a cavity, which can further increase the deformation space of the soft part 21. The deformation of the soft part 21 is a flexible deformation, which not only has low requirements on the material of the soft part 21, but also helps to reduce the risk of the soft part 21 being pulled, torn and damaged, avoids long-term deformation of the soft part 21 and the shedding of the hard part 22, and helps to extend the service life.

[0090] Referring to Figures 1, 3, 5, 8, and 9, in some alternative embodiments, when the soft portion 21 is not recessed within the first accommodating area 231, the soft portion 21 and the hard portion 22 are arranged horizontally, and the first opening 224 can extend vertically. Alternatively, the soft portion 21 and the hard portion 22 can be arranged vertically. Alternatively, the first opening 224 can be arranged at an angle.

[0091] Optionally, when the soft portion 21 is not recessed in the first accommodating area 231 , the first opening 224 is located above the soft portion 21 .

[0092] For example, the first opening 224 can be arranged to extend in the horizontal direction, and the hardware part 22 can be located directly above the soft part 21. Specifically, when the soft part 21 is not recessed in the first accommodating area 231, the first opening 224 is located above the soft part 21, and the soft part 21 is located below the hard part 22. Even when there is less liquid in the first chamber 23, the liquid preferentially acts on the soft part 21. Under the action of its own gravity or the action of the liquid contained therein, the soft part 21 falls away from the first accommodating area 231, reducing interference with the first accommodating area 231. This not only facilitates the installation of the functional mechanism, but also helps to further reduce the risk of interference between the soft part 21 and the functional mechanism.

[0093] Alternatively, the first opening 224 can be arranged at an angle, and the hard part 22 can be located above and to the side of the soft part 21. When the first opening 224 is arranged at an angle, the soft part 21 has side walls extending vertically and a bottom wall extending laterally, so that the soft part 21 will deform when squeezed by fluid in both horizontal and vertical directions, thereby improving the flexibility of the soft part 21 in deforming, thereby more effectively changing the volume ratio of the first chamber 23 and the second chamber 11. In addition, the first opening 224 is arranged at an angle so that the first opening 224 can be located on one side of the soft part 21 in the circumferential direction, so that at least one side of the soft part 21 will not be squeezed in the horizontal direction, and it can also effectively prevent the four sides of the soft part from being squeezed in the horizontal direction at the same time and moving closer to the middle to block the flow path of the liquid.

[0094] Optionally, when the soft part 21 is not sunken or deformed but is in a natural initial state, the first chamber 23 surrounded by the hard part 22 and the soft part 21 can be in the shape of a rectangular parallelepiped, and the second box body 2 can also be in the shape of a rectangular parallelepiped. However, it can be understood that the shapes of the first chamber 23 and the second box body 2 are not limited to rectangular parallelepiped, and can also be other shapes.

[0095] It can be understood that in this application, the definitions of directions such as up, down, horizontal and vertical directions are based on the orientation of the water tank in the normal operating state of the cleaning equipment; among them, the vertical direction includes the Z direction in the accompanying drawings, and the horizontal direction includes the X and Y directions in the accompanying drawings.

[0096] 5 to 7 , in some optional embodiments, the sidewall of the upper end of the hardware portion 22 is provided with an inwardly recessed escape area 223. The mounting portion includes the escape area 223, which is located above the soft portion 21. As part of the mounting portion, the escape area 223 can be used to mount functional mechanisms, further saving space and making the structure compact.

[0097] Referring to Figures 1 to 5, in some optional embodiments, the functional mechanism includes a sewage suction channel 5, at least part of the sewage suction channel 5 is enclosed between the avoidance area 223 and the inner wall of the first box body 1, and / or the avoidance area 223 is used for installing at least part of the sewage suction channel 5; one end of the sewage suction channel 5 is connected to the outside of the water tank, and the other end is connected to the negative pressure device 41, which is suitable for pumping the sewage suction channel 5 into a negative pressure to suck the dirty liquid into the chamber for accommodating the dirty liquid through the sewage suction channel 5. The sewage suction channel 5 is partially formed in the avoidance area 223, or is installed in the avoidance area 223, making the structure more compact. The negative pressure device 41 can be a fan, etc., without limitation.

[0098] Referring to Figures 1 to 5, in some optional embodiments, the first chamber 23 is used to hold clean liquid, and the second chamber 11 is used to hold dirty liquid, making the arrangement of the sewage suction channel 5 simpler and more convenient, without the need for a large number of openings and sealing structures. Specifically, when the first chamber 23 holds clean liquid and the second chamber 11 holds dirty liquid, an inwardly recessed escape area 223 can be provided on the sidewall of the upper end of the hard body 22, and at least a portion of the sewage suction channel 5 is enclosed between the escape area 223 and the inner wall of the first box body 1. The above structure makes the arrangement of the sewage suction channel 5 simpler and more convenient, without the need for a large number of openings and sealing structures; and it can also effectively prevent the deformation of the soft body 21 from interfering with the sewage suction channel 5, while making the water tank structure more compact.

[0099] Referring to Figures 5, 6, 10, and 11, some optional embodiments further include a gas-liquid separation device 42 disposed within the avoidance zone 223. The gas-liquid separation device 42 includes a housing 421 having a liquid inlet 4211, an air outlet 4212, and a liquid discharge port 4213. The liquid inlet 4211 communicates with the sewage suction channel 5; the liquid discharge port 4213 communicates with a chamber for holding dirty liquid; the air outlet 4212 communicates with the air inlet of the negative pressure extraction device 41; and the liquid discharge port 4213 is lower than the air outlet 4212. The gas-liquid separation device 42 is disposed within the avoidance zone 223 to more effectively prevent deformation of the soft body 21 from affecting the fluid channel of the gas-liquid separation device 42.

[0100] Referring to Figures 5, 6, 10 and 11, in some optional embodiments, the gas-liquid separation device 42 includes at least one deflection component 43 provided in a shell 421. The deflection component 43 may include a plurality of deflectors, and the deflectors include straight plates and / or bent plates with an arc-shaped structure. The deflectors may be arranged at different positions in the shell 421 as required, so that the liquid velocity in the gas-liquid mixture is less than the airflow velocity. After the airflow containing liquid hits the deflector and then turns rapidly, due to the different inertia of gas and liquid, the airflow is more likely to change its direction and continue to flow downstream, while small droplets will hit the deflector and converge. Liquid has a larger mass than gas, and generally settles below after convergence, so that the liquid in the gas-liquid mixture is gradually deposited during the transportation process. Alternatively, the drain port 4213 may be arranged lower than the air outlet 4212, so that the liquid can be discharged into the chamber containing the dirty liquid through the drain port 4213 due to gravity. When the gas-liquid mixture reaches the air inlet of the negative pressure extraction device 41, there is essentially no liquid or only a small amount of liquid, thereby reducing the impact on the outside air or the internal components of the cleaning device. Of course, a simple gas-liquid separation mechanism can also be configured in the negative pressure extraction device 41 to further perform gas-liquid separation and reduce the impact on the outside air or the internal components of the cleaning device.

[0101] Optionally, when the deflector 43 is a baffle with an arcuate structure, the baffle 43 has at least one arcuate surface 431, which is recessed from the liquid inlet 4211 toward the gas outlet 4212. After the fluid in the sewage suction channel 5 passes through the liquid inlet 4211 and the arcuate surface 431, the liquid in the fluid is discharged through the liquid outlet 4213, and the gas in the fluid is discharged through the gas outlet 4212. The use of an arcuate baffle recessed toward the gas outlet 4212 in the baffle 43 can make the fluid flow direction change more gentle and prevent splashing. Furthermore, the use of an arcuate baffle recessed toward the gas outlet 4212 can also make the fluid converge more after turning, making it easier for the liquid to converge and settle. Furthermore, when multiple baffles are provided in the fluid path, the use of an arcuate baffle recessed toward the gas outlet 4212 can also avoid excessive initial deceleration of the gas-liquid mixture, which could affect the flow effect of the gas-liquid mixture.

[0102] Optionally, the number of drain ports 4213 can be one or more, and a baffle corresponding to each drain port 4213 is provided in the shell 421. Baffles can be provided at positions corresponding to the drain ports 4213 in the shell 421, so that the gas-liquid separation effect is good and the separated liquid can be discharged in time.

[0103] Referring to Figures 5, 6, 10, and 11, in some optional embodiments, the liquid drain port 4213 is located below the curved surface, and the gas outlet 4212 is located above the curved surface. By placing the liquid drain port 4213 below the curved surface and the gas outlet 4212 above the curved surface, the liquid has a greater mass than the gas and will generally settle below when it is gathered. This can prevent the negative pressure generated by the negative pressure device 41 from carrying the liquid into the gas outlet. At the same time, it can also facilitate the collected liquid to fall directly into the chamber containing the dirty liquid through gravity, thereby improving the gas-liquid separation effect.

[0104] Baffles can be set on the fluid flow path, see Figures 5, 6, 10 and 11. In some optional embodiments, the baffle component 43 includes at least one first baffle, the liquid discharge port 4213 and the gas outlet 4212 are located on one side of the first baffle, and the liquid inlet 4211 is located on the other side of the first baffle. One end of the first baffle is fixed to the shell 421, and a communication port is formed between the other end and the side wall of the shell 421, so that the cavities on both sides of the first baffle in the shell 421 are connected. Providing at least one first baffle in the fluid flow path in the shell 421 is conducive to converging the liquid in advance and further improving the gas-liquid separation effect. At the same time, one end of the first baffle is fixed to the shell of the gas-liquid separation device, and a communication port is formed between the other end and the side wall of the shell of the gas-liquid separation device. The side wall of the shell of the gas-liquid separation device can also be used to change the flow direction of the fluid, reduce the number of baffles set, and reduce the complexity of the structure.

[0105] 5, 6, 10, and 11, in some optional embodiments, the baffle member 43 includes a second baffle, the gas outlet 4212 is provided on the side wall of the housing 421, the liquid outlet 4213 is provided on the bottom wall of the housing 421, and the curved surface of the second baffle is provided on the inner wall surface of the side wall where the gas outlet 4212 is located. Providing the baffle directly below the gas outlet 4212 in the housing 421 helps further reduce the amount of liquid that enters the gas outlet 4212.

[0106] Referring to Figures 5, 6, 10, and 11, in some optional embodiments, a guide portion is provided at one end of the first baffle plate near the connecting port, and the guide portion is bent toward the arcuate surface of the rear first baffle plate or the second baffle plate located on the airflow path. When there are multiple first baffle plates, on the fluid flow path, the guide portion of the front first baffle plate can be bent toward the arcuate surface of the rear first baffle plate located on the airflow path; and the guide portion of the last first baffle plate can be bent toward the arcuate surface of the second baffle plate, so as to guide the fluid to flow in the direction of the rear baffle plate on the airflow path, thereby ensuring that each baffle plate can effectively achieve the effect of gas-liquid separation.

[0107] 3, 5 to 7, in some optional embodiments, the hardware portion 22 is provided with an overflow port 24 connecting the first chamber 23 and the second chamber 11. The overflow port 24 is located on the fluid flow path of the sewage suction channel 5. The overflow port 24 is located on the fluid flow path within the housing 421. This facilitates the airflow overflowing from the overflow port 24 to flow along the gas flow path and be discharged outside the water tank through the air inlet of the negative pressure extraction device 4. The air pressure environment of the fluid flow path within the housing 421 can also help accelerate the flow rate of the airflow overflowing from the overflow port 24.

[0108] 3 to 6 , in some optional embodiments, an overflow port 24 communicating with the first chamber 23 and the second chamber 11 is provided on the upper portion of the second housing 2 .

[0109] Optionally, the overflow port 24 is located on the upper side wall of the hardware portion 22, which not only avoids interference from the soft portion 21, but also eliminates the need to close the overflow port 24 when the water tank is performing a sewage suction operation to create a negative pressure, thereby simplifying the structure and making operation easier. Specifically, when the water tank is performing a sewage suction operation, a negative pressure environment is formed, and the airflow in the chamber containing the clean liquid can be directly discharged into the chamber containing the dirty liquid through the overflow port 24 and sucked away by the negative pressure, without the need for an additional separate exhaust valve; even if the air pressure causes the liquid in the chamber containing the clean liquid to overflow, the water will directly overflow into the chamber containing the dirty liquid and will not enter other spaces and damage the equipment.

[0110] In the water tank of the above embodiment, an overflow port 24 is provided on the upper portion of the second box body 2, which connects the first chamber 23 and the second chamber 11, so that one of the first chamber 23 and the second chamber 11 can receive water overflowing from the other. For example, when the water in the first chamber 23 is a clean liquid, the clean liquid in the first chamber 23 can directly overflow into the second chamber 11 through the overflow port 24; in addition, the overflow port 24 can also keep the air pressure in the first chamber 23 and the second chamber 11 consistent, so that the soft part 21 can move normally to deform.

[0111] 3 to 7 , in some optional embodiments, a second liquid level monitoring component is installed in the second chamber 11, which is suitable for monitoring a preset maximum liquid level in the second chamber 11. The preset maximum liquid level monitored by the second liquid level monitoring component is lower than the drain port 4213, which is lower than the air outlet 4212, and which is lower than the overflow port 24. When the second liquid level monitoring component detects that the water in the second chamber 11 exceeds the preset maximum liquid level, the negative pressure extraction device 41 is closed, the second chamber 11 is no longer negatively pressurized, and the dirty liquid in the second chamber 11 no longer increases. An alarm is triggered to drain the dirty liquid in the second chamber 11, thereby preventing the dirty liquid in the second chamber 11 from flowing back from the drain port 4213 into the first chamber, the sewage suction channel, the gas-liquid separation device 42, and the negative pressure extraction device 41, which helps to prevent damage to the negative pressure extraction device 41 and other circuits in the device.

[0112] 1 , 5 , 12 and 13 , in some optional embodiments, the number of the sewage suction channels 5 can also be set according to demand, for example, it can be one, two or more.

[0113] Referring to Figures 3 to 7 , in some optional embodiments, the sewage suction channel 5 includes a first section 51 and a second section 52 connected to the first section 51. The second section 52 is formed between the avoidance area 223 and the inner wall of the first housing 1. Alternatively, the avoidance area 223 is provided for mounting the second section 52, the second section 52 is connected to the negative pressure extraction device 41, and the first section 51 is connected to the exterior of the water tank. The formation of the second section 52 between the avoidance area 223 and the inner wall of the first housing 1 not only simplifies the structure but also reduces the effect of the air pressure within the second section 52 on the deformation of the soft body 21. The avoidance area 223 is provided for mounting the second section 52, preventing interference between the second section 52 and the soft body 21.

[0114] Referring to Figures 3 to 7, in some optional embodiments, the first section 51 is formed on the outer wall of the first box body 1, which can reduce the occupancy of the internal space of the first box body 1 and save space; or, the first section 51 is defined by part of the outer wall of the hardware part 22 and part of the inner wall of the first box body 1, which not only has a simple and compact structure, but also avoids interference of the software part 21 with the first section 51.

[0115] In addition, the first section 51 may be provided at a top corner of the first box body 1 , a middle portion of a side wall of the first box body 1 , or other locations.

[0116] Optionally, the first housing 1 may be in the shape of a rectangular parallelepiped. In the length direction of the first housing 1, the first section 51 is located in the middle of one side of the first housing 1, and the first section 51 is located in the middle of the side wall of the first housing 1. In this application, the length direction of the first housing 1 may be the X direction in the drawings, the width direction of the first housing 1 may be the Y direction in the drawings, and the height direction of the first housing 1 may be the Z direction in the drawings.

[0117] In the water tank of the above embodiment, the first section 51 can be flexibly arranged according to needs, especially the first section 51 is arranged in the middle of the side wall of the first box body 1, so that the first section 51 is located in a relatively central position of the first box body 1, which is conducive to shortening the conveying path. The first section 51 is easy to set up and is conducive to processing into a straight tube structure.

[0118] Referring to Figures 1, 5, 12 and 13, in some optional embodiments, the first section 51 extends in the vertical direction to form a straight tube structure. The straight tube structure of the first section 51 can reduce the risk of blockage of the first section 51, facilitate unblocking and maintenance, reduce air volume loss and reduce noise.

[0119] Optionally, the first section 51 can adopt a top water spraying method or a side water spraying method. The first section 51 has a lower inlet 511 and an upper outlet 512. When the side water spraying method is adopted, a turning joint can be connected to the upper outlet 512, which is conducive to adapting to various installation environments and reducing the requirements for the installation environment.

[0120] Referring to Figures 3 to 7, in some optional embodiments, the gas-liquid separation device 42 is disposed in the second section 52, and the drain port 4213 is disposed on the bottom wall of the second section 52. The second section 52 extends in a horizontal direction, which is beneficial to the separation of gas and liquid in the fluid and allows the liquid to be discharged from the drain port 4213 in time. The gas is drawn out and discharged from the air inlet of the negative pressure extraction device 41, thereby reducing the influence of air pressure on the deformation of the soft body 21.

[0121] Optionally, the drain ports 4213 may be distributed at different positions on the bottom wall of the second section 52 as required, so that the sewage can fall into the second chamber 11 in a timely manner under the action of gravity after sedimentation.

[0122] 3 to 7 , in some optional embodiments, the upper outlet 512 of the first section 51 connected to the second section 52 is lower than the drain port 4213 . Usually, when the second liquid level monitoring component detects that the liquid level in the second chamber 11 has reached the preset maximum liquid level, the controller will control the negative pressure device 41 to close, and no more dirty liquid will be sucked into the second chamber 11. However, there may be a special situation where the water in the second chamber 11 continues to rise when the second liquid level monitoring component detects that the liquid level has reached the preset maximum liquid level. For example, there is a situation where the clean liquid in the first chamber 23 overflows from the overflow port 24, causing the liquid level in the second chamber 11 to continue to rise after reaching the preset maximum liquid level, which can easily cause the water in the second chamber 11 to rise and flow back from the drain port 4213; and setting the upper end outlet 512 of the first section 51 at a position lower than the drain port 4213 can allow the backflowing liquid to flow back to the ground from the upper end outlet 512 of the first section 51, thereby preventing the liquid in the second chamber 11 from flowing into the negative pressure device 41 and damaging the equipment in extreme cases.

[0123] Optionally, the detection principle and detection structure of the second liquid level monitoring component are not limited. The second liquid level monitoring component can be a float type liquid level sensor, a buoy type liquid level sensor, etc.

[0124] 3 to 7 , in some optional embodiments, the gas-liquid separation device 42 may be embedded between the outer side wall of the hard body 22 and the inner side wall of the first water tank.

[0125] Referring to Figures 1, 3, 5, 12 and 13, in some optional embodiments, the water tank is installed on the cleaning equipment, and the cleaning equipment also includes a cleaning component 81, a sewage suction port and a sewage discharge port 82. The sewage suction port is used to suck dirty liquid on the cleaning component or dirty liquid on the working surface cleaned by the cleaning component; the sewage discharge port 82 connects the sewage suction port with the sewage suction channel 5 to suck the dirty liquid into the second chamber 11; the sewage suction port is arranged along the preset direction of the cleaning component with the sewage discharge port 82 as the center, and the first section 51 extends in the vertical direction and is formed with a lower end inlet 511 connected to the sewage discharge port 82.

[0126] Optionally, the cleaning assembly 81 includes a sewage collection assembly of the host, a wet cleaning component, or a cleaning disk of the base station. Multiple sewage suction ports are evenly arranged on the cleaning assembly 81. Dirty liquid enters through the multiple sewage suction ports and is concentrated through the sewage discharge port 82 to enter the first section 51 from the lower inlet 511 of the first section 51. The multiple sewage suction ports are evenly arranged at the bottom of the cleaning assembly 81. Furthermore, the cleaning assembly 81 can be in the form of an elongated strip or an arc-shaped structure. This structural design of the cleaning assembly 81 helps increase the sewage suction area. It is understood that the shape of the cleaning assembly 81 is not limited to the shapes listed above and can also be designed into other shapes according to needs.

[0127] In the water tank of the above embodiment, the sewage suction ports are evenly arranged on the cleaning component 81, and are arranged along the preset direction of the cleaning component 81 with the sewage discharge port 81 as the center, which is conducive to evenly distributing the suction force to each sewage suction port through the sewage discharge port 82, so that the air pressure of each sewage suction port is the same, which is convenient for uniform sewage suction, reduces air volume loss, improves sewage suction efficiency, and ensures that a smaller number of first sections 51 can also ensure the sewage suction effect, which is conducive to simplifying the structure and reducing costs.

[0128] Referring to Figures 3 to 5 and 8 to 12 , in some optional embodiments, the functional mechanism of the first chamber 23 includes a valve 33 and / or a delivery pipe assembly 31 and / or a first liquid level monitoring component 32. The valve 33 is adapted to be opened unidirectionally to connect the first chamber 23 and the second chamber 11, allowing the clean liquid to flow to the chamber containing the dirty liquid; the delivery pipe assembly 31 is used to connect the first chamber 23 with the outside of the water tank; and the first liquid level monitoring component 32 is used to monitor the liquid level in the first chamber 23.

[0129] Referring to Figures 5 and 8 to 12, in some optional embodiments, the top wall of the hardware part 22 is further provided with a third opening 221 connected to the first chamber 23, and the third opening 221 includes a placement space for accommodating the fixed platform 222 and a reserved operating space; the fixed platform 222 is installed on the installation part, and the fixed platform 222 is used for installing the functional mechanism of the first chamber 23. The operating space can be a space for performing operations on the functional mechanism of the first chamber 23, such as disassembling and maintaining the functional mechanism of the first chamber 23; the operating space can also be a space for adding liquid to the first chamber 23, which is not only simple and convenient to install and operate, but also has a compact structural layout, which is conducive to reducing the occupied space.

[0130] Referring to Figures 5, 8, and 12, in some optional embodiments, a portion of the fixed platform 222 is formed into a water and electricity compartment 225, within which is sealed a connection component suitable for externally connecting at least some of the functional mechanisms. The water and electricity compartment 225 can be sealed with a sealing cover. The connection component can provide an external connection interface for the conveying pipeline assembly 31, the circuit powering the first liquid level monitoring component 32, the circuit powering the valve 33, and / or other components, thereby enabling the connection between the functional mechanisms and components located outside the water tank.

[0131] In the water tank of the above embodiment, part of the fixed platform 222 is formed into a water and electricity compartment 225, which not only provides space for the connection between the functional mechanisms inside the water tank and the components outside the water tank, but also the space of the water and electricity compartment 225 is relatively closed, which can reduce the impact of water vapor on the components installed in the water and electricity compartment 225, especially reduce the impact on components such as circuits, thereby improving safety and reliability.

[0132] Referring to Figures 3 to 5 and Figures 8 to 12, in some optional embodiments, the functional mechanism of the first chamber 23 includes a delivery pipe assembly 31, and the first chamber 23 is connected to the outside of the water tank through the delivery pipe assembly 31. The liquid in the first chamber 23 can be delivered to the outside of the water tank through the delivery pipe assembly 31.

[0133] Optionally, when cleaning liquid is accumulated in the first chamber 23, the cleaning liquid can be clean water or clean water with detergent added or other liquid with cleaning ability. The delivery pipe assembly 31 is connected to the cleaning assembly 81 outside the water tank, and the cleaning liquid in the first chamber 23 is delivered to the cleaning assembly 81 through the delivery pipe assembly 31 so that the cleaning assembly 81 performs the cleaning operation.

[0134] Optionally, the delivery pipeline assembly 31 includes components such as a water pipe (not shown in the figure) and / or a valve and / or a water inlet and / or a water pump; wherein the water pump provides suction power to transport the water in the first chamber 23 to the outside of the water tank through the water pipe.

[0135] Optionally, some components of the delivery pipeline assembly 31 can be installed on the bottom wall of the hardware part 22, for example, the water inlet end of the delivery pipeline assembly 31 is installed on the bottom wall of the hardware part 22, which is conducive to the full drainage of the liquid in the first chamber 23; some components of the delivery pipeline assembly 31 can be installed on the fixed platform 222, for example, the water outlet end of the delivery pipeline assembly 31 is installed on the fixed platform 222.

[0136] The water tank of the above embodiment, by installing the delivery pipeline assembly 31 on the installation part of the hardware part 22, can not only provide stable and reliable support for the delivery pipeline assembly 31 and make the installation simple and convenient, but also can effectively avoid the soft part 21 from interfering with the delivery pipeline assembly 31 and affecting the normal operation of the delivery pipeline assembly 31, thereby improving the reliability of the delivery pipeline assembly 31.

[0137] Referring to Figures 4, 5, and 8 to 11, in some optional embodiments, the functional mechanism of the first chamber 23 includes a valve 33 that is adapted to open in one direction to connect the first chamber 23 with the second chamber 11, allowing the clean liquid to flow into the chamber containing the dirty liquid. The valve 33 is opened in one direction to prevent the dirty liquid from flowing back into and contaminating the clean liquid.

[0138] Optionally, the valve core 331 of the valve 33 is mounted on the bottom wall of the hardware portion 22, one end of the valve stem 332 of the valve 33 is movably mounted on the fixed platform 222, the other end of the valve stem 332 is connected to the valve core 331, and a pull ring 333 of the valve 33 is mounted on one end of the valve stem 332 and exposed at the third opening 221. The pull ring 333 drives the valve stem 332 to move, thereby driving the valve core 331 at the bottom of the valve stem 332 to open or close the valve 33, which is simple to operate. Furthermore, the valve core 331 can be a plug, and the hardware portion 22 is provided with a drainage hole. The valve stem 332 is connected to the plug and can drive the plug to block and open the drainage hole. It is understood that the structure of the valve 33 is not limited to the mechanical valve 33 exemplified above, and an electric valve 33 can also be used so that the valve 33 can be automatically opened and closed according to instructions.

[0139] The water tank of the above embodiment, by providing a valve 33 connecting the first chamber 23 and the second chamber 11, allows for the flow of clean liquid into the chamber to be cleaned. This allows for easy and convenient cleaning of the water tank, particularly of the chamber containing dirty liquid, without requiring disassembly of components. Furthermore, mounting the valve 33 on the mounting portion of the hardware portion 22 not only provides stable and reliable support for the valve 33, simplifying and facilitating installation, but also effectively prevents interference with the valve 33 by the software portion 21, which could affect its proper operation, thereby improving the reliability of the valve 33.

[0140] 4 , 5 , 8 to 11 , in some optional embodiments, the functional mechanism of the first chamber 23 includes a first liquid level monitoring component 32 , which is suitable for monitoring the liquid level in the first chamber 23 .

[0141] Optionally, the bottom end support of the first liquid level monitoring component 32 is fixed on the bottom wall of the hardware portion 22 , and the top end support of the first liquid level monitoring component 32 is fixed on the fixed platform 222 .

[0142] Optionally, the detection principle and detection structure of the first liquid level monitoring component 32 are not limited. The first liquid level monitoring component 32 can be a float type liquid level sensor, a buoy type liquid level sensor, etc.

[0143] The clean water tank of the above embodiment, by installing the first liquid level monitoring component 32 on the installation part of the hardware part 22, can not only provide stable and reliable support for the first liquid level monitoring component 32 through the hardware part 22, and the installation is simple and convenient, but also can effectively avoid the interference of the software part 21 on the first liquid level monitoring component 32 and affect the normal operation of the first liquid level monitoring component 32, thereby improving the reliability of the first liquid level monitoring component 32.

[0144] 1 , 5 and 6 , in some optional embodiments, the second box body 2 is detachably installed in the first box body 1 .

[0145] Optionally, a handle 25 is provided on the top of the second box body 2 to facilitate taking and placing the second box body 2. Further, the handle 25 is provided on the top wall of the hard body 22 and is located outside the first cavity 23.

[0146] Optionally, the top edge of the second box body 2 has an outwardly bent flange. The second box body 2 is installed in the first box body 1. The flange and the top end of the first box body 1 are limited so that the second box body 2 is suspended in the first box body 1. This structural design is not only convenient for assembly and disassembly, but also facilitates the installation of a sealing ring at the assembly point to achieve a sealed fit, preventing moisture in the second chamber 11 from escaping and affecting other components. It is understandable that the assembly method of the second box body 2 and the first box body 1 is not limited to the methods listed above. Other assembly methods can also be used to stably install the second box body 2 in the first box body 1.

[0147] In the water tank of the above embodiment, the second box body 2 is detachably installed in the first box body 1. Since the second box body 2 adopts the above arrangement, it is also relatively easy to disassemble and assemble. The second box body 2 can be taken out very conveniently without affecting the functional components of the water tank, and the first box body 1, the second box body 2 and the functional mechanisms in the water tank can be cleaned or the functional mechanisms in the water tank can be maintained.

[0148] Referring to Figures 1 and 5, in some optional embodiments, the water tank further includes a tank cover 12, which is flip-mounted on the first tank body 1. The tank cover 12 can be flipped open and closed. When the tank cover 12 is opened, the second tank body 2 can be taken in and placed. When the tank cover 12 is closed, the top of the second tank body 2 can be sealed.

[0149] Referring to Figures 3 to 11, in some optional embodiments, the water tank further includes a protective bracket 6, which is installed in the second chamber 11. When the soft body part 21 is not recessed in the first accommodating area 231, the protective bracket 6 is used to support the soft body part 21; a through water-permeable hole 61 is provided on the protective bracket 6, and the water-permeable hole 61 connects the side of the protective bracket 6 facing the soft body part 21 and the side facing away from the soft body part 21.

[0150] Optionally, the protective bracket 6 can be connected and fixed to the hardware part 22 by screws, bonding or other connecting methods, and the hardware part 22 provides installation support for the protective bracket 6; or, the protective bracket 6 can be connected and fixed to the side wall of the first box body 1 by screws, bonding or other connecting methods, and the first box body 1 provides installation support for the protective bracket 6; or, the protective bracket 6 can be placed and fixed on the bottom wall of the first box body 1, and fixed by screws, bonding or other methods.

[0151] In the water tank of the above embodiment, the protective bracket 6 is suitable for supporting the soft part 21 to prevent the soft part 21 from shaking during operation, and to reduce excessive deformation caused by the liquid in the first chamber exerting a greater force on the soft part 21 when the second chamber contains less liquid and the first chamber contains more liquid, or loosening of the fixation between the soft part and the hard part, thereby increasing the life of the soft part 21. The water-permeable hole 61 is suitable for connecting the side of the protective bracket 6 facing the soft part 21 and the side facing away from the soft part 21, so that the liquid in the second chamber 11 can enter the protective bracket 6 through the water-permeable hole 61 to squeeze the soft part 21 and cause the soft part 21 to produce flexible deformation, thereby reducing the volume of the first chamber 23 and increasing the volume of the second chamber 11.

[0152] Referring to Figures 3 to 11, 14 and 15, in some optional embodiments, the bottom of the soft part 21 and / or the bottom of the protective bracket 6 are designed with a slope structure, and the position of the slope structure close to the functional mechanism is lower than the position of the slope structure away from the functional mechanism, so as to guide the liquid in the first chamber 23 to flow toward the functional mechanism.

[0153] Optionally, the side of the protective bracket 6 facing the soft body 21 has a first slope 62, and the position of the first slope 62 close to the functional mechanism is lower than the position of the first slope 62 away from the functional mechanism. The first slope 62 is suitable for fitting with the bottom surface of the soft body 21 to guide the liquid in the first chamber 23 to flow toward the functional mechanism of the first chamber 23. Furthermore, the height of the first slope 62 gradually decreases from a position away from the functional mechanism to a position close to the functional mechanism. Specifically, the height of the first slope 62 gradually decreases from a position away from the water inlet end of the delivery pipeline assembly 31 to a direction close to the water inlet end of the delivery pipeline assembly 31, so that the water inlet end of the delivery pipeline assembly 31 is at the lowest position of the second chamber 11, so that the water in the second chamber 11 can be fully discharged.

[0154] Optionally, the delivery pipeline assembly 31, the first liquid level monitoring component 32, and the valve 33 are all arranged on the same side of the hardware part 22, and the bottom wall of the hardware part 22 can be located at the lowest position of the second chamber 11, so that the delivery pipeline assembly 31 and the valve 33 can discharge the water in the second chamber 11 to the maximum extent to avoid waste; the first liquid level monitoring component 32 can monitor the lowest liquid level in the second chamber 11.

[0155] When the first chamber is used to hold clean liquid and the second chamber is used to hold dirty liquid, the first box body is provided with a sewage outlet connecting the second chamber with the outside of the water tank, and the bottom of the second chamber has a second inclined surface, and the position of the second inclined surface close to the sewage outlet is lower than the position of the second inclined surface away from the sewage outlet. The second inclined surface is suitable for guiding the dirty liquid in the second chamber to flow toward the sewage outlet so as to completely discharge the dirty liquid.

[0156] In some optional embodiments, the first housing 1 is further provided with a sewage outlet 13, which connects the second chamber 11 with the outside of the water tank. The bottom of the second chamber 11 has a second inclined surface 14, which is lower near the sewage outlet 13 than at a position away from the sewage outlet 13. The second inclined surface 14 is adapted to guide dirty liquid in the second chamber 11 toward the sewage outlet 13, thereby facilitating the drainage of dirty liquid in the second chamber 11. The height of the second inclined surface 14 gradually decreases from a position away from the sewage outlet 13 to a position close to the sewage outlet 13. This structural design facilitates the complete drainage of dirty liquid in the second chamber 11.

[0157] 14 and 15 , in some optional embodiments, the water tank includes a first box body 1, an isolation component 7, and a protective bracket 6, the first box body 1 having a liquid storage chamber, the isolation component 7 being installed in the first box body 1, the isolation component 7 having a soft body 21, the soft body 21 dividing the liquid storage chamber into a first chamber 23 and a second chamber 11 whose volume ratios can be relatively variable, one of the first chamber 23 and the second chamber 11 being used to hold clean liquid, and the other being used to hold dirty liquid; the protective bracket 6 is installed in the first box body 1, the protective bracket 6 being located on the side of the soft body 21 facing away from the concave direction of the soft body 21, and supporting the soft body 21; a through water-permeable hole 61 is provided on the protective bracket 6, the water-permeable hole 61 connecting the side of the protective bracket 6 facing the soft body 21 and the side facing away from the soft body 21.

[0158] In the water tank of the above embodiment, the isolation member 7 includes a soft portion 21, which allows the volumes of the first chamber 23 and the second chamber 11 to vary relative to each other, reducing space waste and facilitating the production of smaller water tanks. Furthermore, a protective bracket 6 is provided to support the soft portion 21, preventing it from shaking during operation. This also reduces excessive deformation caused by the liquid in the first chamber exerting a greater force on the soft portion 21 when the second chamber contains less liquid than the first chamber, or loosening the connection between the soft portion and the hard portion, thereby increasing the lifespan of the soft portion 21. The water-permeable hole 61 connects the side of the protective bracket 6 facing the soft portion 21 with the side facing away from the soft portion 21, allowing liquid in the second chamber 11 to enter the protective bracket 6 through the water-permeable hole 61, squeezing the soft portion 21 and causing it to flexibly deform, thereby reducing the volume of the first chamber 23 and increasing the volume of the second chamber 11.

[0159] 14 and 15 , in some optional embodiments, the isolation component 7 is detachably installed in the first box body 1 .

[0160] Optionally, a handle 25 is provided on the isolation component 7 for easy removal.

[0161] In the water tank of the above embodiment, the isolation component 7 is detachably installed in the first tank body 1, which is convenient for disassembly and assembly, and facilitates the removal of the second tank body 2 and the cleaning of the first tank body 1.

[0162] Referring to Figures 14 and 15 , in some optional embodiments, a one-way valve 33 is provided on the isolation member 7 to prevent the reverse flow of dirty liquid into the clean liquid and contaminate it. The first chamber 23 and the second chamber 11 are adapted to communicate when the valve 33 is open, allowing the clean liquid to flow into the chamber containing the dirty liquid. By providing the valve 33 connecting the first chamber 23 and the second chamber 11, clean liquid can be introduced into the chamber to be cleaned. This allows the water tank to be cleaned, particularly the chamber containing the dirty liquid, without disassembling components, making the cleaning operation simple and convenient.

[0163] 14 , in an optional embodiment, the first chamber 23 and the second chamber 11 are distributed in a horizontal direction.

[0164] 14 , in an optional embodiment, the first chamber 23 and the second chamber 11 are distributed in the vertical direction.

[0165] Optionally, the first chamber 23 is located above the second chamber 11, or the first chamber 23 is located below the second chamber 11. Further, the first chamber 23 is located above the second chamber 11, the first chamber 23 is used to hold clean liquid, and the second chamber 11 is used to hold dirty liquid.

[0166] 14 and 15 , in some optional embodiments, an overflow port 24 is provided on the upper portion of the isolation member 7 for connecting the first chamber 23 and the second chamber 11. The overflow port 24 provided on the isolation member 7 connects the first chamber 23 and the second chamber 11, allowing one of the first chamber 23 and the second chamber 11 to receive liquid overflowing from the other. For example, when the water in the first chamber 23 is a clean liquid, the clean liquid in the first chamber 23 can overflow directly into the second chamber 11 through the overflow port 24. Furthermore, the overflow port 24 can also maintain consistent air pressure in the first chamber 23 and the second chamber 11, allowing the soft portion 21 to move and deform normally.

[0167] Referring to Figures 1 and 5, Figures 14 and 15, in some optional embodiments, the water tank further includes a tank cover 12, which is flipped and mounted on the first tank body 1. The tank cover 12 can be flipped open and closed. When the tank cover 12 is opened, the second tank body 2 can be taken in and placed. When the tank cover 12 is closed, the top of the second tank body 2 can be sealed.

[0168] Referring to Figures 3 to 11, 14 and 15, in some optional embodiments, the portion of the soft part 21 that contacts the protective bracket 6 has an interference fit, and the portion of the soft part 21 placed on the protective bracket 6 has redundancy, ensuring that the soft part 21 can fully contact the protective bracket 6, avoiding the soft part 21 from shaking or falling and causing the soft part 21 to fail, which is beneficial to extending the service life of the soft part 21 and ensuring the performance of the soft part 21.

[0169] 1 to 5 and 14 to 15 , in some optional embodiments, the present application provides a cleaning device, including the water tank 100 in any of the above embodiments.

[0170] In an optional embodiment, the cleaning device is a base station, and the water tank 100 is installed in the base station. The base station also includes a cleaning disc, sewage suction ports distributed on the cleaning disc, and a sewage discharge port 82 connected to the sewage suction port. The cleaning disc is used to carry or collect dirty liquid formed by the wet cleaning parts of the self-mobile device; the sewage suction channel 5 of the water tank 100 is connected to the sewage suction port on the cleaning disc through the sewage discharge port 82 to suck the dirty liquid on the cleaning disc into the first chamber 23 or the second chamber 11 for accommodating dirty liquid.

[0171] In an optional embodiment, the cleaning device is a self-moving device, and the water tank 100 is installed in the self-moving device. The self-moving device also includes a wet cleaning part for wet cleaning the working surface, a sewage suction port connected to the wet cleaning part, and a sewage discharge port 82 connected to the sewage suction port; the sewage suction channel 5 of the water tank 100 is connected to the sewage suction port through the sewage discharge port 82 to suck the dirty liquid on the wet cleaning part into the first chamber 23 or the second chamber 11 for accommodating the dirty liquid.

[0172] In an optional embodiment, the cleaning device is a self-moving device, and the water tank 100 is installed in the self-moving device. The self-moving device also includes a sewage collection component for collecting sewage on the working surface, a sewage suction port distributed on the sewage collection component and connected to the working surface, and a sewage discharge port 82 connected to the sewage suction port; the sewage suction channel 5 of the water tank 100 is connected to the sewage suction port through the sewage discharge port 82 to suck the dirty liquid on the working surface into the first chamber 23 or the second chamber 11 for accommodating the dirty liquid.

[0173] In an optional embodiment, the self-moving device has the function of automatic movement, which is simple, convenient, labor-saving and has a wider range of applications.

[0174] The cleaning device of the above embodiment has the advantages of avoiding space waste of the water tank 100 and having a good cleaning effect, and also has the advantages of being easy to move and labor-saving to operate.

[0175] The water tank and cleaning equipment of the present invention solve the problem that the water tank occupies a large space due to the separate arrangement of the clean water tank and the sewage tank by sharing part of the volume space between the first chamber 23 and the second chamber 11, effectively improving the volume utilization rate of the water tank, and can more efficiently realize the conversion and storage of clean liquid and dirty liquid, saving space, thereby improving the overall space utilization rate of the water tank and the cleaning equipment as well as the cleaning endurance and cleaning effect, which is conducive to small-volume production so as to adapt to more application scenarios and improve application value; in addition, the soft part 21 of the water tank can also effectively alleviate the water swinging of the chamber containing dirty liquid, reduce the water swinging amplitude, improve the safety guard line, protect the negative pressure pumping device 41, and avoid the negative pressure pumping device 41 from failing due to water suction.

[0176] Throughout this specification, references to terms such as "this embodiment," "example," and "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0177] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A water tank, characterized in that, Comprising: A first box body; And A second box body, which is installed in the first box body; the second box body has a first chamber, and a second chamber is formed between the outer wall of the second box body and the inner wall of the first box body; Wherein, the second box body includes a hard part and a soft part, the hard part and the soft part are connected to enclose the first chamber, and the soft part can deform to change the volume ratio of the first chamber and the second chamber; One of the first chamber and the second chamber is used to accommodate cleaning liquid, and the other is used to accommodate dirty liquid.

2. The water tank according to claim 1, characterized in that, The hard part has a first accommodating area with one end being a first opening, the soft part is arranged at the first opening, and the first accommodating area and the soft part enclose the first chamber; When the soft part is recessed into the first accommodating area, the hard part has a mounting part offset from the soft part, and the mounting part is for installing a functional mechanism of the first chamber and / or the second chamber.

3. The water tank according to claim 2, characterized in that, When the soft part is not recessed into the first accommodating area, the soft part has a second accommodating area with one end being a second opening, and the second opening of the soft part is hermetically connected to the first opening of the hard part; and the first accommodating area and the second accommodating area are communicated to form the first chamber.

4. The water tank according to claim 3, characterized in that, When the soft part is not recessed into the first accommodating area, the first opening is located above the soft part.

5. The water tank according to claim 4, characterized in that, The first opening is inclined.

6. The water tank according to any one of claims 2-5, characterized in that, The side wall at the upper end of the hard part is provided with a recessed avoidance area, the mounting part includes the avoidance area, and the avoidance area is located above the soft part.

7. The water tank according to claim 6, characterized in that, The functional mechanism includes a sewage suction channel, at least part of the sewage suction channel is formed by enclosing between the avoidance area and the inner wall of the first box body, and / or at least part of the sewage suction channel is installed in the avoidance area; one end of the sewage suction channel is communicated with the outside of the water tank, and the other end is connected to a negative pressure pumping device, and the negative pressure pumping device is adapted to pump the sewage suction channel into a negative pressure to suck the dirty liquid into the chamber for accommodating the dirty liquid through the sewage suction channel.

8. The water tank according to claim 7, characterized in that, The first chamber is used to accommodate cleaning liquid, and the second chamber is used to accommodate dirty liquid.

9. The water tank according to claim 7, wherein It further includes a gas-liquid separation device arranged in the avoidance area, the gas-liquid separation device includes a housing, the housing has a liquid inlet, a gas outlet and a liquid discharge port, and the liquid inlet is communicated with the sewage suction channel; the liquid discharge port is communicated with the chamber for accommodating the dirty liquid, and the gas outlet is communicated with the air inlet of the negative pressure pumping device.

10. The water tank according to claim 9, characterized in that, The gas-liquid separation device includes at least one baffle component arranged in the housing, the baffle component has at least one arc surface, the arc surface is recessed from the side of the liquid inlet towards the side of the gas outlet, and after the fluid in the sewage suction channel sequentially passes through the liquid inlet and the arc surface, the liquid in the fluid is discharged through the liquid discharge port, and the gas in the fluid is discharged through the gas outlet.

11. The water tank according to claim 10, characterized in that, The liquid discharge port is located below the arc surface, and the gas outlet is located above the arc surface.

12. The water tank according to claim 11, characterized in that, The baffle component includes at least one first baffle plate. The liquid discharge port and the gas outlet are located on one side of the first baffle plate, and the liquid inlet is located on the other side of the first baffle plate. One end of the first baffle plate is fixed to the housing, and a communication port is formed between the other end and the side wall of the housing, so that the cavities on both sides of the first baffle plate in the housing are communicated.

13. The water tank according to claim 12, characterized in that, The baffle component includes a second baffle plate. The gas outlet is provided on the side wall of the housing, the liquid discharge port is provided on the bottom wall of the housing, and the arc surface of the second baffle plate is provided on the inner wall surface of the side wall where the gas outlet is located.

14. The water tank according to claim 13, characterized in that, A guiding portion is provided at one end of the first baffle plate close to the communication port, and the guiding portion is bent towards the arc surface of the rear first baffle plate or the second baffle plate located on the air flow path.

15. The water tank according to claim 9, characterized in that, An overflow port communicating the first chamber and the second chamber is provided on the rigid part, and the overflow port is located on the fluid flow path of the sewage suction channel.

16. The water tank according to claim 15, characterized in that, A second liquid level monitoring member adapted to monitor the preset maximum liquid level in the second chamber is installed in the second chamber. The preset maximum liquid level monitored by the second liquid level monitoring member is lower than the liquid discharge port, the liquid discharge port is lower than the gas outlet, and the liquid discharge port is lower than the overflow port.

17. The water tank according to any one of claims 9-16, characterized in that, The sewage suction channel includes a first section and a second section connected to the first section. The second section is surrounded by the inner wall of the first box body and the avoidance area, and / or the second section is installed in the avoidance area. The second section is connected to the negative pressure pumping device, and the first section communicates with the outside of the water tank.

18. The water tank according to claim 17, wherein The gas-liquid separation device is arranged in the second section, the liquid discharge port is arranged on the bottom wall of the second section, and the second section extends in the horizontal direction.

19. The water tank according to claim 18, characterized in that, The upper end outlet of the first section connected to the second section is lower than the liquid discharge port.

20. The water tank according to claim 17, wherein, The first section is formed on the outer side wall of the first box body; or the first section is defined by enclosing a part of the outer side wall of the rigid part and a part of the inner side wall of the first box body.

21. The water tank according to claim 17, characterized in that, The water tank is installed in the cleaning device. The cleaning device further includes a cleaning component, a sewage suction port and a sewage discharge port. The sewage suction port is used for sucking the dirty liquid on the cleaning component or the dirty liquid on the working surface cleaned by the cleaning component; the sewage discharge port communicates the sewage suction port with the sewage suction channel to suck the dirty liquid into the second chamber; the sewage suction ports are arranged along the preset direction of the cleaning component with the sewage discharge port as the center. The first section extends in the vertical direction and is formed with a lower end inlet communicating with the sewage discharge port.

22. The water tank according to any one of claims 2-5, characterized in that, The functional mechanism of the first chamber includes: A valve adapted to open unidirectionally to communicate the first chamber and the second chamber, so that the cleaning liquid flows to the chamber for accommodating the dirty liquid; and / or A conveying pipeline assembly for communicating the first chamber with the outside of the water tank; and / or A first liquid level monitoring member for monitoring the liquid level in the first chamber.

23. The water tank according to claim 22, wherein, The top wall of the hardware part is also provided with a third opening connected to the first chamber, and the third opening includes a placement space for accommodating a fixed platform and a reserved operating space; the fixed platform is installed on the mounting part, and the fixed platform is used for installing the functional mechanism of the first chamber.

24. The water tank according to claim 23, characterized in that, The valve core of the valve is installed on the bottom wall of the hardware part, one end of the valve stem of the valve is movably arranged on the fixed platform, the other end of the valve stem is connected to the valve core, and the pull ring of the valve is installed on one end of the valve stem and exposed at the third opening. The valve stem is driven to move by the pull ring, and the valve core on the bottom of the valve stem is driven to move to open or close the valve.

25. The water tank according to claim 23, characterized in that, Part of the fixed platform is formed as a water and electricity compartment, and a transfer component suitable for external connection of at least part of the functional mechanism is sealed and installed in the water and electricity compartment.

26. The water tank according to any one of claims 2-5, characterized in that, The water tank also includes a protective bracket, which is installed in the second chamber; when the software part is not recessed in the first accommodating area, the protective bracket is used to support the software part; the protective bracket is provided with a through water-permeable hole, and the water-permeable hole connects the side of the protective bracket facing the software part and the side facing away from the software part.

27. The water tank according to claim 26, wherein, The protective bracket has a first slope on one side facing the software part, wherein a position of the first slope close to the functional mechanism is lower than a position of the first slope away from the functional mechanism, and the first slope is suitable for fitting with the bottom surface of the software part to guide the liquid in the first chamber to flow toward the functional mechanism of the first chamber.

28. The water tank according to any one of claims 7, 9-16, characterized in that, The first chamber is used to hold clean liquid, and the second chamber is used to hold dirty liquid; the first box body is provided with a sewage outlet connecting the second chamber with the outside of the water tank, and the bottom of the second chamber has a second slope, the position of the second slope close to the sewage outlet is lower than the position of the second slope away from the sewage outlet, and the second slope is suitable for guiding the dirty liquid in the second chamber to flow to the sewage outlet.

29. The water tank according to any one of claims 1-5, characterized in that, The second box body is detachably installed in the first box body.

30. A water tank, characterized in that, include: A first box body having a liquid storage cavity; An isolation component, the isolation component is installed in the first box, the isolation component has a soft part, the soft part divides the liquid storage cavity into a first chamber and a second chamber whose volume ratios can be relatively changed; one of the first chamber and the second chamber is used to hold clean liquid, and the other is used to hold dirty liquid; as well as A protection bracket, which is installed in the first box, is located on a side of the software part facing away from the concave direction of the software part, and supports the software part; The protective bracket is provided with a through water-permeable hole, and the water-permeable hole is suitable for connecting the side of the protective bracket facing the soft body part and the side facing away from the soft body part.

31. The water tank according to claim 30, wherein, The isolation component is provided with a one-way opening valve, and when the valve is opened, the first chamber and the second chamber are connected, so that the clean liquid flows to the chamber containing the dirty liquid.

32. The water tank according to claim 30, wherein, The isolation component is detachably installed in the first box.

33. The water tank according to claim 30, wherein The first chamber and the second chamber are distributed in the vertical direction; the first chamber is located above the second chamber, and the first chamber is used to accommodate cleaning liquid, and the second chamber is used to accommodate dirty liquid.

34. The water tank according to claim 30, wherein One side of the protective bracket facing the soft part has a first inclined surface. The position of the first inclined surface close to the functional mechanism of the first chamber is lower than the position of the first inclined surface far from the functional mechanism. The first inclined surface is adapted to fit with the bottom surface of the soft part to guide the liquid in the first chamber to flow to the functional mechanism of the first chamber.

35. A cleaning device, characterized in that, It includes the water tank according to any one of claims 1 to 34.

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