A water tank for a cleaning device

Abstract

The present application relates to the technical field of cleaning equipment, and discloses a water tank for a cleaning device, which comprises a water tank body, a water tank cover assembly, a filter screen assembly, an interface assembly and a pressure regulating pipe assembly. The water tank body is hollow to form a cavity for containing cleaning liquid. The filter screen assembly is detachably mounted in the water tank body. The interface assembly is detachably connected with the water tank body and is used for the cleaning liquid and / or gas to enter or exit the cavity. The interface assembly is provided with a backwater outlet, a clean water outlet and an exhaust interface which can directly communicate with the cavity. The pressure regulating pipe assembly is arranged in the filter screen assembly and comprises a pipe body, an exhaust passage and at least one gravity ball arranged in the pipe body. The pressure regulating pipe assembly communicates the cavity with the atmosphere through the exhaust interface of the interface assembly to regulate the air pressure in the cavity. The present application solves the problem that the gravity ball is directly placed in the pressure relief groove in the prior art, impurities enter the pressure relief groove, and the pressure regulating work of the gravity ball is affected and its pressure regulating performance is lost.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and more particularly to a water tank for a cleaning device. Background Technology

[0002] Traditional car wash equipment often occupies space large enough to accommodate a whole car. The washing process involves spraying water and cleaning solution onto the vehicle body and using large mechanical rollers to scrub and rinse it. The entire car wash equipment is bulky, consumes a lot of water and electricity, and is noisy. In recent years, with the popularization of floor scrubbers, portable car wash machines have emerged, evolving from "water and dust circulation" floor scrubbers. Portable car wash machines use a motor to drive a cleaning drum to wipe the car body. They are also equipped with a water supply system and a water tank to clean the cleaning drum, thus perfectly cleaning the car body.

[0003] Existing technology CN219091228U discloses a pressure-relief filtration integrated device for a continuously inlet and outlet water tank. Installed inside the continuously inlet and outlet water tank, it allows the liquid in the tank's cavity to be filtered before flowing out. The water tank has an inlet, an outlet, and a vent on one snap-fit ​​end face. The pressure-relief filtration integrated device includes a filter assembly with an outlet and a vent, and a pressure-relief assembly disposed inside and connected to the filter assembly. One end of the pressure-relief channel of the pressure-relief assembly is connected to the vent and abuts against the inner wall of the snap-fit ​​end face of the water tank. During use, the circulating cleaning container is in motion, which inevitably causes the pressure-relief assembly to function, releasing the pressure inside the cavity and balancing the pressure inside and outside the water tank, effectively reducing the negative impacts caused by pressure imbalance within the water tank.

[0004] In existing technology, a pressure relief tank is set inside the water tank of the cleaning device to accommodate the pressure regulating device. When the gravity ball is placed directly in the pressure relief tank for pressure regulation, impurities generated by the sewage passing through the filter screen enter the pressure relief tank, which affects the pressure regulation work of the gravity ball in the pressure relief tank and causes a loss of pressure regulation performance. Summary of the Invention

[0005] To overcome the limitations of existing technologies, this invention provides a water tank for a cleaning device, addressing the problem in existing technologies where the gravity ball is placed directly in the pressure relief tank, leading to impurities entering the tank and affecting the pressure-regulating function of the gravity ball, thus compromising its pressure-regulating performance. The specific technical solution is as follows.

[0006] A cleaning device uses a water tank, comprising:

[0007] The water tank body is hollow, forming a cavity to hold the cleaning liquid, with one end open and the other end semi-closed;

[0008] A water tank cover assembly is fitted onto the open end of the water tank body to seal the cavity;

[0009] The filter assembly is installed inside the water tank body;

[0010] An interface component is detachably connected to the semi-closed end of the water tank body for the entry and exit of cleaning liquid and / or gas into and out of the cavity, and is provided with a wastewater return port, a clean water outlet and an exhaust port.

[0011] A pressure regulating pipe assembly is disposed within the filter assembly;

[0012] The pressure regulating pipe assembly connects the cavity to the outside atmosphere through the exhaust port of the interface assembly to regulate the air pressure inside the cavity.

[0013] In one or more alternative embodiments, the pressure regulating tube assembly includes:

[0014] The tube body is in the shape of a straight tube, with openings at both ends to form a pressure relief channel. At least one pre-pressure relief port is provided at each end of the opening. At least one pre-pressure relief port connects the pressure relief channel to the space above the surface of the cleaning liquid. A converging adapter is provided on the side wall at the center of the tube body.

[0015] The exhaust passage is connected at one end to the convergence adapter and at the other end to the exhaust port of the interface assembly.

[0016] At least one gravity ball can roll smoothly within the tube body;

[0017] During operation, the gravity ball can open at least one of the pre-pressure relief ports using its own weight to connect the air above the liquid surface with the outside atmosphere.

[0018] In one or more alternative embodiments, the filter assembly includes a filter support with a top opening, and the other outer periphery of the filter support is covered by a filter screen. When the filter support is engaged with the water tank body, the top opening is closed by the top wall of the water tank body, and the pressure regulating pipe assembly is disposed on the axis of symmetry of the top opening.

[0019] In one or more alternative embodiments, the front and rear side walls of the filter assembly are provided with grooves at the axisymmetric center of the top opening, and both ends of the tube body are provided with snap-fit ​​ears, which snap into the grooves. The pressure regulating tube assembly and the filter assembly together constitute a pressure regulating mechanism that connects the inside and outside of the cavity.

[0020] In one or more alternative embodiments, there are at least three gravity balls. A centrally penetrating elastic sleeve is provided on the side of the pre-pressure relief port near the pipe body. The end of the elastic sleeve facing the center of the pipe body has a bowl-shaped opening. The inner sidewall of the bowl-shaped opening is arc-shaped and matches the outer spherical surface of the gravity ball. When the gravity ball and the inner sidewall of the elastic sleeve cooperate, they form an air seal to block the communication between the pre-pressure relief port and the cavity.

[0021] In one or more alternative embodiments, the exhaust passage includes:

[0022] An adapter that is detachably connected to the convergence adapter;

[0023] The exhaust pipe is connected at one end to the adapter and at the other end to the exhaust port of the interface assembly.

[0024] In one or more alternative embodiments, the exhaust passage further includes a one-way valve disposed within the adapter;

[0025] When the cavity is overpressurized, the one-way valve opens, and the gas is discharged to the outside of the water tank through the exhaust pipe to balance the gas pressure.

[0026] In one or more alternative embodiments, the sum of the diameters of the gravity balls along the axial direction of the pipe body is less than the horizontal distance from the converging adapter to either end of the pre-pressure relief port.

[0027] In one or more alternative embodiments, the filter bracket has a cavity inside, and the filter bracket is provided with an exhaust port and a water outlet port communicating with the cavity on the side near the interface assembly. The exhaust port is connected to the exhaust interface, and the water outlet port is connected through the cavity and is connected to the clean water outlet.

[0028] In one or more alternative embodiments, a bayonet is provided at the connection between the semi-closed end of the water tank body and the interface assembly, the vent port and the water outlet port abut against the bayonet, and the bayonet is also provided with a sewage pipe that communicates with the depth of the water tank body cavity.

[0029] In one or more alternative embodiments, the cleaning device is provided with a clean water channel and a wastewater channel. The interface assembly includes a docking end cap that can abut against the cleaning device. The docking end cap is provided with a clean water outlet, an exhaust port, and a wastewater return port. The clean water outlet is connected to the clean water channel. The exhaust port and the exhaust channel are connected to the outside atmosphere. The wastewater return port is connected to the wastewater channel.

[0030] In one or more optional embodiments, a two-way shut-off valve is provided at the connection between the clean water outlet and the clean water channel, and at the connection between the exhaust port and the exhaust channel. When the docking end cap abuts against the cleaning device, the two-way shut-off valve is compressed and opened, and the clean water channel and the exhaust channel are connected to the outside of the water tank. When the water tank is removed, the docking end cap separates from the cleaning device, the two-way shut-off valve returns to the closed state, and the clean water channel and the exhaust channel are closed.

[0031] In one or more alternative embodiments, a sewage shut-off valve is provided at the connection between the sewage return outlet and the sewage channel. When the docking end cap abuts against the cleaning device, the sewage shut-off valve is compressed to open, and the sewage channel is connected to the outside of the water tank. When the water tank is removed, the docking end cap separates from the cleaning device, the sewage shut-off valve returns to the closed state, and the sewage channel is closed.

[0032] In one or more alternative embodiments, the cavity of the filter bracket is provided with a locking element, and the filter screen assembly is detachably connected to the water tank body via the locking element. The locking element includes a locking tongue, a spring, and a fixing cover.

[0033] In one or more alternative embodiments, a water tank cover assembly is snapped onto the water tank body, and a sealing ring is provided on the inner edge of the water tank cover assembly where it connects to the water tank body.

[0034] In one or more alternative embodiments, a water-blocking and venting valve is provided at the pre-depressurization port.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] 1. This invention provides a pressure regulating pipe assembly within the top opening of a filter screen assembly that is internally snapped into the water tank body. This pressure regulating pipe assembly not only serves as a channel connecting the inside and outside of the cavity, allowing gas flow within the pressure relief channel formed inside the pipe body to maintain pressure balance, but also blocks contact between the gravity ball and impurities inside the pipe body through its relatively closed tubular structure. Simultaneously, pre-pressure relief ports are provided at both ends of the pipe body opening, connecting to the pressure relief channel, and in conjunction with the exhaust channel of the interface assembly connected to the center of the pipe body, allowing gas to be discharged outward along the exhaust channel when the gas pressure inside the pressure relief channel is too high, further maintaining a stable pressure environment.

[0037] 2. This invention achieves a detachable connection between the filter screen assembly and the water tank body by setting a locking component on the filter screen assembly, making the disassembly and replacement of the filter screen assembly simple and quick. When the user simply cleans the inside of the water tank body, they can simply open the water tank cover assembly, rinse with clean water, and shake to complete the simple cleaning work. The locking component prevents the filter screen assembly from separating from the water tank body during shaking, which facilitates daily maintenance and cleaning. At the same time, the locking component ensures that the filter screen assembly can be firmly fixed in the working position during the operation of the water tank.

[0038] The specific technical solution of the present invention and its beneficial effects will be described in detail in the following specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the description only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a front view of the water tank in the cleaning device of the present invention;

[0041] Figure 2 for Figure 1 Sectional view along line A;

[0042] Figure 3 for Figure 1 A three-dimensional view of the sectional view along line A in the middle;

[0043] Figure 4 This is an exploded view of the water tank in the cleaning device of the present invention;

[0044] Figure 5 An exploded view of the filter screen assembly of the water tank in the cleaning device of the present invention after the pressure regulating pipe assembly has been installed;

[0045] Figure 6 This is an exploded view of the water tank cover of the cleaning device of the present invention.

[0046] Figure 7 for Figure 2 Enlarged view of a section at point B in the middle;

[0047] Figure 8 This is a schematic diagram of the locking component of the water tank in the cleaning device of the present invention;

[0048] Figure 9 This is an exploded structural diagram of the locking component of the water tank in the cleaning device of the present invention.

[0049] Figure 10 This is a perspective view of the pressure regulating pipe assembly of the water tank in the cleaning device of the present invention;

[0050] Figure 11 This is a front view of the pressure regulating pipe assembly of the water tank in the cleaning device of the present invention.

[0051] Figure 12 for Figure 11 Sectional view along line C.

[0052] The numbers in the diagram are as follows:

[0053] 1. Water tank body; 1a. Snap-fit ​​bearing surface; 1b. Observation window; 1c. Buckle part;

[0054] 2. Interface assembly; 21. Connecting end cap; 211. Clean water outlet; 212. Vent port; 213. Sewage return outlet; 22. Sealing gasket; 23. Two-way shut-off valve; 23a. First shut-off valve; 23b. Second shut-off valve; 24. Sewage shut-off valve;

[0055] 3. Water tank cover assembly; 30. Cover body; 31. Sealing ring;

[0056] 4. Filter screen assembly; 41. Filter bracket; 41a. Water outlet port; 41b. Vent port; 41c. Drain notch; 42. Groove; 43. Water suction pipe; 44. Vent pipe;

[0057] 5. Pressure regulating pipe; 50. Pressure regulating pipe body; 50a. Converging adapter; 50b. First snap-fit ​​ear; 50c. Second snap-fit ​​ear; 50d. Vent groove; 51. Pressure relief channel; 52. Pre-pressure relief port; 53. Gravity ball; 54. Water-blocking vent valve; 54a. Vent hole; 54c. Vent groove; 541. Elastic sleeve; 56. One-way valve; 57. Adapter; 9. Locking element; 91. Locking tongue; 92. Fixing cover; 93. Spring. Detailed Implementation

[0058] To make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following describes this application in further detail with reference to the accompanying drawings and embodiments.

[0059] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0060] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0061] When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0062] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0064] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0065] like Figure 1-12 As shown, this invention discloses a water tank for a cleaning device, including a water tank body 1, a water tank cover assembly 3, a filter screen assembly 4, an interface assembly 2, and a pressure regulating pipe assembly 5. Specifically, after the water tank body 1 and the water tank cover assembly 3 are snapped together, a cavity is formed inside to accommodate the filter screen assembly 4. The water tank cover assembly 3 completely closes the cavity. The cavity formed in the hollow water tank body 1 is used to contain cleaning liquid. The filter screen assembly 4 is detachably installed inside the water tank body 1. One end of the water tank body 1 is open, and the other end is semi-closed. The water tank cover assembly 2 covers the open end of the water tank body 1. The interface assembly 2 is detachably connected to the semi-closed end of the water tank body 1 for the cleaning liquid and / or gas to enter and exit the cavity. The interface assembly 2 includes a connector for the filter screen assembly 4. The water tank body 1 has a semi-closed end with a sealing gasket 22 that elastically abuts against it, and a docking end cap 21 that is covered by the sealing gasket 22 and detachably connected to the semi-closed end of the water tank body 1 by screws. The semi-closed end of the water tank body 1, the sealing gasket 22, and the docking end cap 21 are all provided with a wastewater return port 213, a clean water outlet 211, and an exhaust port 212 that can directly connect to the cavity. The pressure regulating pipe assembly 5 is arranged inside the filter screen assembly 4. The pressure regulating pipe assembly 5 connects the cavity to the outside atmosphere through the exhaust port 212 of the interface assembly 2 to regulate the air pressure in the cavity.

[0066] Furthermore, the wastewater return port 213 is connected to the wastewater channel of the cleaning device. After the cleaning device has cleaned the surface to be cleaned, the wastewater flows through the wastewater channel to the wastewater return port 213. The wastewater enters the cavity through the wastewater return port 213. In the cavity, the wastewater continues to pass through the filter screen of the filter screen assembly 4 (not shown in the figure) and is filtered into clean water. The clean water in the filter screen assembly 4 then flows out of the cavity through the clean water outlet 211 and is sent into the clean water channel of the cleaning device. The clean water continues to be sent to the surface of the cleaning roller of the cleaning device to continue cleaning the surface to be cleaned. This cycle continues until the wastewater is repeatedly filtered until the sent-out clean water affects the cleaning effect of the cleaning device. Only then does the user need to open the water tank cover assembly 3 and pour out the wastewater to add clean water.

[0067] This invention provides a pressure regulating pipe assembly 5 at the axisymmetric center of the top opening of the filter screen assembly 4, which is internally snapped into the water tank body 1. This pressure regulating pipe assembly not only serves as a channel connecting the inside and outside of the cavity, allowing gas flow in the pressure relief channel 51 formed inside the pipe body 50 of the pressure regulating pipe assembly 5 to maintain pressure balance, but also blocks the contact between the gravity ball 53 inside the pipe and impurities through its relatively closed tubular structure. At the same time, a pre-pressure relief port 52 is provided at both ends of the pipe body 50, connecting to the pressure relief channel. This, together with the converging adapter 50a at the axisymmetric center of the pipe body 50, connects to the exhaust channel of the interface assembly 2, allowing gas to be discharged outward along the exhaust channel when the gas pressure in the pressure relief channel is too high, further maintaining a stable pressure environment inside the cavity.

[0068] In one specific embodiment, see [reference] Figure 2 , Figure 3 , Figure 5 , Figures 10-12Furthermore, the pressure regulating pipe assembly 5 includes a pipe body 50, an exhaust channel, and at least one gravity ball 53. The pipe body 50 is a straight pipe with openings at both ends. The hollow tubular channel inside the pipe body 50 forms a pressure relief channel 51. At least one pre-pressure relief port 52 is provided at each end of the opening. At least one pre-pressure relief port 52 connects the pressure relief channel 51 to the space above the surface of the cleaning liquid contained in the cavity. The pipe body 50 has a converging interface 50a at its central sidewall along its length. The exhaust channel includes an exhaust pipe 44, one end of which is connected to the converging interface 50a, and the other end of which is connected to the interface assembly 2. The gravity ball 53 can roll smoothly inside the pipe body 50. During operation, the gravity ball 53 can open at least one pre-pressure relief port 52 using its own weight to connect the air above the liquid surface with the outside atmosphere. The wastewater entering the cavity through the wastewater return outlet 213 contains impurities. The pipe body 50 of the pressure regulating pipe assembly 5 uses its relatively closed tubular structure to prevent the gravity ball 53 inside the pipe from contacting the impurities. This prevents the gravity ball 53 from being stuck by the impurities when it rolls smoothly inside the pipe body 50, ensuring that the pressure regulating function of the pressure regulating pipe assembly 5 is not lost throughout the cleaning process. The pipe body 50 has a converging interface 50a at the center sidewall along its length, allowing a further exhaust channel to be opened at the center of the pressure relief channel 51 to continue releasing pressure to the outside atmosphere. In this way, if any half of the pressure relief channel 51 cannot release pressure temporarily for various reasons, the other half of the pressure relief channel 51 is connected to the exhaust channel, allowing pressure to continue to be released.

[0069] Specifically, the diameter of the gravity ball 53 is smaller than the inner diameter of the pressure relief channel 51, so that the gravity ball 53 can move freely in the pressure relief channel 51 due to gravity. The pre-pressure relief port 52 is located at both ends of the pipe opening. The two pre-pressure relief ports 52 are set on the same horizontal plane. When the two pre-pressure relief ports 52 are parallel to the horizontal plane, the pre-pressure relief ports 52 have three states: the first state: when several gravity balls 53 block only one side of the pre-pressure relief port 52, the pre-pressure relief port 52 is in the closed state, while the other side of the pre-pressure relief port 52 is in the open state; the second state: several gravity balls 53 block both sides of the pre-pressure relief port 52 at the same time, that is, both sides of the pre-pressure relief port 52 are in the closed state; the third state: several gravity balls 53 are on the pressure relief channel 51 and do not block either side of the pre-pressure relief port 52, that is, both sides of the pre-pressure relief port 52 are in the open state. However, in actual use, the water tank of the cleaning device only needs the pressure regulating pipe 5 for pressure regulation when in use. The water tank of the cleaning device is in a state of frequent movement during use, and will only briefly enter the second and third states mentioned above. That is, the pre-pressure relief ports 52 on both sides are only briefly opened or closed at the same time. For a long time, it is in a state where one side of the pre-pressure relief port 52 is open and the other side of the pre-pressure relief port 52 is closed. This ensures that during use, one of the pre-pressure relief ports 52 is connected to the cavity of the water tank body 1. In conjunction with the exhaust channel, the pressure in the cavity is released, thereby balancing the pressure inside and outside the water tank.

[0070] In one specific embodiment, see [reference] Figure 4 , Figure 5Furthermore, the filter assembly 4 includes a filter support 41, the top of which is completely open to form a top opening. The pressure regulating pipe assembly 5 is disposed on the axis of symmetry of the top opening. The other outer periphery of the filter support 41 is covered with a filter screen (not shown in the attached figure). When the filter support 41 is engaged with the water tank body 1, the opening seals against the top wall of the water tank body 1. The area framed by the top opening of the filter support 41 on the top wall of the water tank body 1 is provided with a viewing window 1b. The viewing window 1b is correspondingly disposed with the pressure regulating pipe assembly 5. Since the pipe body 50 of the pressure regulating pipe assembly 5 is made of transparent material, the user can clearly see the internal condition of the pipe body 50 of the pressure regulating pipe assembly 5 located inside the water tank body 1 through the viewing window 1b. The top opening of the filter bracket 41 forms a seal with the top wall of the water tank body 1, forcing all sewage in the chamber to pass through the filter screen to be filtered into clean water. This prevents sewage from seeping into the filter assembly 4 through the gap between the top opening of the filter bracket 41 and the top wall of the water tank body 1, thus improving the cleanliness of the water in the filter assembly 4. It also prevents impurities from entering the filter assembly 4 and affecting the operation of the pressure regulating pipe assembly 5. A viewing window 1b is provided in the area framed by the top opening of the filter bracket 41 on the top wall of the water tank body 1. This allows the user to directly observe whether the gravity ball 53 can roll smoothly within the pipe body 50, and also allows the user to further observe the cleanliness of the water in the filter assembly 4 through the gravity ball 53 and the pipe body 50, enabling timely replacement of the water. The pressure regulating pipe assembly 5 is positioned on the axis of symmetry of the top opening, allowing the user to easily remove the entire pressure regulating pipe assembly 5 from the top opening of the filter bracket 41 after removing the filter assembly 4 when maintenance is required.

[0071] In one specific embodiment, see [reference] Figure 4 , Figure 5Furthermore, the front and rear side walls of the filter bracket 41 are provided with grooves 42 at the center of the top opening axis of symmetry. Both ends of the tube body 50 of the pressure regulating tube assembly 5 are provided with snap-fit ​​ears (50b, 50c). The snap-fit ​​ears are snapped into the grooves 42. The pressure regulating tube assembly 5 and the filter screen assembly 4 together constitute a pressure regulating mechanism that connects the inside and outside of the cavity. A pressure regulating pipe assembly 5 is provided in the top opening of the filter bracket 41. The pressure regulating pipe body 50 of the pressure regulating pipe assembly 5 not only serves as a channel connecting the inside and outside of the cavity, allowing gas flow in the pressure relief channel 51 formed inside the pipe to maintain the pressure balance in the cavity, but also blocks the contact between the gravity ball 53 inside the pipe and impurities through its relatively closed tubular structure. The pre-pressure relief port 52 located at both ends of the pipe opening of the pressure regulating pipe body 50 is connected to the pressure relief channel 51. Together with the converging interface 50a at the center of the length direction of the pipe body 50, it connects to the exhaust channel of the interface assembly 2, so that when the gas pressure in the pressure relief channel 51 is too high, the gas is allowed to be discharged outward along the exhaust channel, further maintaining a stable pressure environment. Both ends of the tube body 50 are provided with snap-fit ​​ears, which snap into the grooves 42 on the front and rear side walls of the filter bracket 41. This allows the tube body 50 to be more securely snapped onto the axis of symmetry of the top opening of the filter bracket 41, thereby making the entire pressure regulating tube assembly 5 more securely installed. This ensures that the pressure regulating tube assembly 5 can be firmly snapped onto the axis of symmetry of the top opening of the filter bracket 41 during the process of the user quickly pushing and pulling the cleaning device.

[0072] In one specific embodiment, see [reference] Figure 2 , Figure 3 , Figure 5Furthermore, at least three gravity balls 53 are provided inside the pressure regulating pipe body 50. A centrally penetrating elastic sleeve 541 is provided on the side of the pre-pressure relief port 52 near the pipe body 50. The center of the elastic sleeve 541 is provided with a vent hole 54a that penetrates the pressure relief channel 51 and the cavity. The end of the elastic sleeve 541 facing the center of the pipe body 50 is provided with a bowl-shaped opening. The inner sidewall of the bowl-shaped opening is arc-shaped and matches the outer spherical surface of the gravity ball 53. When the gravity ball 53 and the inner sidewall of the bowl-shaped opening of the elastic sleeve 541 cooperate, they form an air seal, which blocks the vent hole 54a, thereby blocking the communication between the pre-pressure relief port 52 and the cavity. The pre-pressure relief port 52 is provided with a centrally penetrating elastic sleeve 541 on the side near the pipe body 50. On the one hand, it can prevent the gravity ball 53 from constantly impacting the elastic sleeve 541 and generating a lot of noise during the process of adjusting the pressure in the cavity by the pressure regulating pipe assembly 5. On the other hand, when the gravity ball 53 cooperates with the inner wall of the bowl-shaped opening of the elastic sleeve 541, it forms an air seal, which blocks the vent hole 54a, thereby blocking the communication between the pre-pressure relief port 52 and the cavity. This can prevent sewage in the cavity from breaking through the vent hole 54a of the elastic sleeve 541 below the liquid surface and flowing into the pressure relief channel 51, and prevent impurities in the sewage from affecting the smooth rolling of the gravity ball 53 in the pipe body 50 after the sewage enters the pressure relief channel 51.

[0073] In one specific embodiment, see [reference] Figure 5 , Figure 10 , Figure 11 Furthermore, the elastic sleeve 541 has at least one vent groove 54c at its end opposite to the center of the pipe body 50, connecting the vent hole 54a to the circumferential side wall of the elastic sleeve 541. The pipe body 50 has at least one vent groove 50d at the pre-pressure relief port 52, corresponding to the vent groove 54c. Gas that needs to be released from the cavity to the outside of the water tank first passes through the vent groove 50d and then continues to converge along the vent groove 54c to the vent hole 54a. After passing through the elastic sleeve 541, it continues to be released along the pressure relief channel 51, and then continues to be discharged to the outside of the water tank through the exhaust channel via the converging interface 50a. More preferably, as... Figure 10 , Figure 11As shown, the elastic sleeve 541 has two ventilation grooves 54c at the end opposite to the center of the pipe body 50, connecting the vent hole 54a to the circumferential side wall of the elastic sleeve 541. The two ventilation grooves 54c converge at the vent hole 54a in a V-shape. Similarly, the V-shaped ventilation grooves 54c also connect to the vent groove 50d of the pipe body 50. Likewise, the ventilation grooves 54c can also be arranged in a radial pattern centered on the vent hole 54a. Outside the filter screen assembly 4 inside the cavity, unfiltered sewage is continuously stored. The sewage contains some impurities, which can easily clog the inlet pre-pressure relief port 52 of the pressure relief channel over time. The elastic sleeve 541 is provided with at least one radially arranged vent groove 54c at one end away from the center of the tube body 50, which connects the vent hole 54a to the periphery of the elastic sleeve 541. This can further widen the channel for the vent hole 54a to release pressure outward, and prevent the pressure regulating function of the pressure regulating tube assembly 5 from being lost due to the blockage of the pre-pressure relief port 52.

[0074] In one specific embodiment, see [reference] Figure 2 , Figure 5 Furthermore, the exhaust passage includes an adapter 57 and an exhaust pipe 44. The adapter 57 is detachably connected to the converging adapter 50a, and one end of the exhaust pipe 44 is connected to the adapter 57, while the other end is connected to the exhaust port 212 of the interface assembly 2. By connecting the adapter 57 and the exhaust port 212 with the exhaust pipe 44, an exhaust passage can be directly connected from the middle of the pressure relief passage 51 to the outside of the cavity and communicate with the outside atmosphere, thus achieving the simplest way to connect the pressure relief passage 51 to the outside atmosphere.

[0075] In one specific embodiment, see [reference] Figure 2 , Figure 3 , Figure 5Furthermore, the exhaust channel also includes a one-way valve 56 disposed within the adapter 57. The atmospheric pressure port of the one-way valve 56 faces the converging adapter 50a, and the low-pressure port of the one-way valve 56 faces the adapter 57. When the cavity is overpressurized, the one-way valve 56 opens, and gas is discharged to the outside of the water tank through the exhaust pipe 44 to balance the pressure. Users can replace the one-way valve 56 with different specifications according to different usage scenarios, thereby adjusting the pressure relief capability of the pressure regulating pipe assembly 5 to adapt to the needs of various usage scenarios. By setting the one-way valve 56, the adjustable pressure threshold range of the pressure regulating pipe assembly 5 is further widened, increasing the adaptability of the water tank to various usage scenarios. Furthermore, the one-way valve 56 can be a duckbill valve. Utilizing the one-way conduction characteristic of the one-way valve, when there is overpressure in the pressure relief channel 51, gas is allowed to be discharged unidirectionally along the one-way valve, effectively preventing external pressure from the water tank from flowing back into the pressure relief channel 51 through the exhaust channel. The adapter 57 connects the one-way valve 56 and the exhaust pipe 44, ensuring that the gas can flow smoothly along the exhaust channel. The adapter 57 can also reduce gas pressure loss and resistance, so that the gas can be discharged at a more stable and uniform speed, thereby improving exhaust efficiency.

[0076] In one specific embodiment, see [reference] Figure 2 , Figure 3 , Figure 12 Furthermore, the sum of the diameters of the gravity balls 53 along the axial direction of the pipe body 50 is less than the horizontal distance from the converging interface 50a to any pre-pressure relief port 52. Specifically, when the pressure regulating pipe 5 is tilted, the gravity balls 53 will all move towards one side of the pre-pressure relief port 52 due to gravity, stacking and blocking the pre-pressure relief port 52. In this state, the total length of the gravity balls 53 is limited to less than the horizontal distance from the converging interface 50a to any pre-pressure relief port 52. This setting ensures that when the pressure regulating pipe 5 is tilted, and the pressure in the pressure relief channel 51 needs to be vented and regulated through the exhaust channel of the converging interface 50a, the gravity balls 53 will not block the exhaust channel in the center of the pipe. Therefore, regardless of the tilt angle of the pressure regulating pipe 5, the exhaust channel connected by the converging interface 50a is always in an openable state. In this way, at least half of the pressure relief channel 51 can remain unobstructed, and the corresponding converging interface 50a and at least one pre-pressure relief port 52 can remain unobstructed, thereby opening up the pressure relief channel 51 and the exhaust channel, thus keeping the cavity the same as the outside atmosphere, and thus realizing timely release of pressure in the cavity.

[0077] In one specific embodiment, see [reference] Figure 2 , Figure 3 , Figure 5, Figure 12 Furthermore, the filter bracket 41 has an internal cavity, and an exhaust port 41b and a water outlet port 41a are provided on the side of the filter bracket 41 near the interface assembly, communicating with the cavity. The exhaust port 41b is correspondingly connected to the exhaust interface 212, and the water outlet port 41a is connected through the cavity of the filter bracket and correspondingly connected to the clean water outlet 211. Figure 5 As shown, one end of the exhaust pipe 44 is connected to the adapter 57, and the other end of the exhaust pipe 44 is connected to the exhaust port 41b. The exhaust port 41b abuts against the exhaust interface 212, which is connected to the outside atmosphere, so that the pressure regulating pipe assembly 5 can release the air pressure in the cavity in a timely manner. The water outlet port 41a is connected to a water suction pipe 43 on the side facing the cavity. The other end of the water suction pipe 43 is located in the cavity. The sewage in the cavity passes through the filter screen and is filtered into clean water, which is then drawn in from the water suction end of the water suction pipe 43. The clean water is further transported through the water suction pipe 43 to the water outlet port 41a. The water outlet port 41a abuts against the clean water outlet 211. The clean water passes through the clean water outlet 211 and is sent into the clean water channel and then to the surface of the cleaning roller of the cleaning device. The water suction pipe 43 is located inside the cavity of the filter bracket 41, which helps the water suction end of the water suction pipe 43 to only draw in filtered clean water, which helps to extend the service life of the clean water pump configured in the cleaning device, allows the clean water pump to work at the optimal energy efficiency ratio, and reduces noise and energy consumption.

[0078] In one specific embodiment, see [reference] Figures 1-4Furthermore, the semi-closed end of the water tank body 1 is provided with through holes corresponding to the sewage return port 213, the clean water outlet 211, and the vent port 212, respectively. The connection between the semi-closed end of the water tank body 1 and the interface assembly 2 is provided with a bayonet portion 1c. The vent port 41b and the water outlet port 41a abut against the inner wall of the bayonet portion 1c facing the cavity. The bayonet portion 1c is also provided with a sewage pipe (not shown in the figure) that communicates with the depth of the cavity of the water tank body 1. The exhaust port 41b and water outlet port 41a of the filter bracket 41 abut against the inner wall of the bayonet portion 1c facing the cavity, allowing clean water in the cavity of the filter bracket 41 to flow directly out through the clean water outlet 211, and allowing air in the pressure relief channel 51 and exhaust channel to be discharged directly through the exhaust port 212. This eliminates the hassle of connecting a separate pipeline from the water outlet port 41a to the clean water outlet 211, and also eliminates the hassle of connecting a separate pipeline from the exhaust port 41b to the exhaust port 212. At the same time, since the exhaust port 41b and water outlet port 41a of the filter bracket 41 abut against the inner wall of the bayonet portion 1c facing the cavity, maintenance can be performed by simply pulling out the entire filter screen assembly 4, which is convenient and quick.

[0079] In one specific embodiment, the cleaning device is further provided with a clean water channel and a wastewater channel, see reference. Figures 1-4 The interface assembly 2 includes a docking end cap 21 capable of abutting against an external mechanism of the water tank. The docking end cap 21 is provided with a wastewater return port 213, a clean water outlet 211, and a vent port 212. The clean water outlet 211 connects to the clean water channel, the vent port 212 connects to the vent channel to the outside atmosphere, and the wastewater return port 213 connects to the wastewater channel. The docking end cap 21 is further detachably fastened to the outer wall of the bayonet portion 1c opposite to the cavity via its circumferential threads, or the docking end cap 21 is further detachably fastened to the outer wall of the bayonet portion 1c opposite to the cavity via screws.

[0080] Furthermore, a two-way shut-off valve 23 is provided at the connection between the clean water outlet 211 and the clean water channel, and at the connection between the exhaust port 212 and the exhaust channel; and a sewage shut-off valve 24 is provided at the connection between the sewage return port 213 and the sewage channel.

[0081] Specifically, such as Figure 4As shown, the bidirectional shut-off valve 23 includes a first shut-off valve 23a, a second shut-off valve 23b, and a spring sandwiched between the first and second shut-off valves. The closed end of the second shut-off valve 23b elastically seals against the through holes corresponding to the water outlet 211 and the vent port 212 of the semi-closed end of the water tank body 1. The closed end of the first shut-off valve 23a elastically seals against the water outlet 211 and the vent port 212 of the docking end cover 21. Either the first shut-off valve 23a or the second shut-off valve 23b, which are installed in the water channel and the vent channel, can open the corresponding water channel and vent channel when squeezed. When the water tank is installed on the cleaning device, the first shut-off valve 23a installed in the water channel and the vent channel is squeezed by the corresponding interfaces of the water channel and the vent channel in the cleaning device, thus opening the entire water channel and the vent channel. Similarly, when the water tank is removed from the cleaning device, the clean water channel and vent channel of the water tank are closed because neither the first shut-off valve 23a nor the second shut-off valve 23b is subjected to any pressure. The bidirectional shut-off valve 23 controls both the opening and closing of the vent channel and the clean water channel, and further prevents the liquid inside the water tank body 1 from leaking into other areas of the cleaning process during operation. A sewage shut-off valve 24 is provided at the connection between the sewage return port 213 and the sewage channel. When the water tank is installed on the cleaning device, the sewage shut-off valve 24 installed in the sewage channel is squeezed by the corresponding interface of the sewage channel in the cleaning device, thus opening the entire sewage channel. Similarly, when the water tank is removed from the cleaning device, the sewage channel of the water tank is closed because the sewage shut-off valve 24 is not subjected to any pressure. By controlling the sewage shut-off valve 24, sewage is controlled to flow back into the cavity of the water tank along the sewage return port 213, thereby achieving effective sewage collection. It should be noted that in the cleaning device, clean water flows out of the water tank, through the clean water channel to the surface of the cleaning roller, and after cleaning the surface, the wastewater flows back to the water tank through the wastewater channel. It is filtered in the water tank, becomes clean water again, and is then discharged as clean water, thus repeating the cycle. The clean water channel and the wastewater channel together constitute the entire water flow channel. A one-way valve at any point in the entire water flow channel ensures unidirectional water flow. In this embodiment, the wastewater shut-off valve 24 is a one-way valve. Therefore, wastewater in the water tank cavity cannot flow back into the wastewater channel through the wastewater shut-off valve 24. Two-way shut-off valves 23 are installed at the connection between the clean water outlet 211 and the clean water channel, and at the connection between the exhaust port 212 and the exhaust channel, allowing the clean water and air in the water tank cavity to adjust their flow direction in both directions through the clean water channel and the exhaust channel.Only when the water pressure and air pressure inside the water tank cavity are greater than the water pressure and air pressure on the surface of the cleaning roller and exceed the threshold of the bidirectional on / off valve 23, can the water pressure and air pressure push the second on / off valve 23b backward to open the bidirectional on / off valve 23. Similarly, when the water pressure and air pressure on the surface of the cleaning roller exceed the value of the water pressure and air pressure inside the water tank cavity minus the threshold of the bidirectional on / off valve 23, the water pressure and air pressure push the second on / off valve 23b in the opposite direction to close the bidirectional on / off valve 23. The bidirectional on / off valve 23 can slightly adjust the flow direction of water pressure and air pressure in both directions within its pressure threshold.

[0082] Furthermore, the interface assembly 2 includes a sealing gasket 22 capable of sealing the gap between the bayonet portion 1c and the docking end cap 21. The sealing gasket 22 is disposed between the bayonet portion 1c and the docking end cap 21. Similarly, the sealing gasket 22 is provided with a wastewater return port 213, a clean water outlet 211, and an exhaust port 212. The clean water outlet 211 is connected to the clean water channel, the exhaust port 212 is connected to the exhaust channel to the outside atmosphere, and the wastewater return port 213 is connected to the wastewater channel. The sealing gasket 22 is made of elastic materials such as silicone and rubber, and has good extensibility and sealing properties. When the docking end cap 21 is connected to the bayonet portion 1c, the sealing gasket 22 can ensure that water and air in the cavity of the water tank body 1 will not leak out from other places on the docking end cap 21 except for the wastewater return port 213, the clean water outlet 211, and the exhaust port 212.

[0083] In one specific embodiment, see [reference] Figure 2 , Figure 5 , Figures 7-9 Furthermore, the cavity of the filter bracket is provided with a locking element 9, and the filter screen assembly 4 is detachably connected to the water tank body 1 through the locking element 9. The locking element 9 includes a locking tongue 91, a spring 93, and a fixing cover 92. By setting the locking element 9, the filter screen assembly 4 can be detachably connected to the water tank body 1, making the removal and replacement of the filter screen assembly 4 simple and quick. When the user simply cleans the inside of the water tank body 1, the water tank cover assembly 3 can be opened, and only water needs to be rinsed and shaken to complete the simple cleaning work. The locking element 9 prevents the filter screen assembly 4 from separating from the water tank body 1 when shaken, which facilitates daily maintenance and cleaning. At the same time, the setting of the locking element 9 ensures that the filter screen assembly 4 can be firmly fixed in the working position during the operation of the water tank. The spring 93 provides the necessary elastic force to keep the locking tongue 91 in the locked position, and maintains the stability of the connection even under water flow impact or vibration. The fixing cover 92 plays a protective role to prevent the locking tongue 91 from accidentally disengaging or being damaged.

[0084] In one specific embodiment, see [reference] Figure 2 , Figure 3 , Figure 6 Furthermore, a water tank cover assembly 3 is snapped onto the water tank body 1. The water tank cover assembly 3 includes a water tank cover body 30 and a sealing ring 31 that is snapped onto the water tank cover body 30 to maintain a sealed connection with the water tank body 1. Figure 2 , Figure 3 As shown, the tank cover body 30 is also provided with a snap-fit ​​groove (not shown in the figure) that cooperates with the cleaning device. The sealing ring 31 is tightly snapped onto the inner wall of the tank cover body 30 where it mates with the water tank body 1. The sealing ring 31 can ensure that sewage and air in the water tank cavity will not leak out from the gap between the water tank cover assembly 3 and the water tank body 1.

[0085] Finally, it should be noted that when the pressure on the surface of the cleaning fluid in the cavity is greater than the pressure generated by the gravity ball assembly pressing on the elastic sleeve 541, the cleaning fluid, or air bubbles mixed in the cleaning fluid, can push away the gravity ball assembly and allow the air in the cavity to release pressure through the exhaust channel. As described in the aforementioned specific embodiment, since at least half of the pressure relief channel 51 remains unobstructed, even if a small amount of water seeps into the pressure relief channel 51, it will not cause the unobstructed half of the pressure relief channel 51 to be blocked. This allows the corresponding converging interface 50a and at least one pre-pressure relief port 52 to remain unobstructed, thereby opening the pressure relief channel 51 and the exhaust channel, thus keeping the cavity the same as the outside atmosphere, and achieving timely pressure release within the cavity. It should also be noted that the pressure difference generated by the height difference between the liquid surface and the lowest gravity ball pushes the gravity ball group upward to the height of half the pressure relief channel 51 projected on the vertical line. This pressure is enormous. In daily use, even if the user pushes and pulls the cleaning device at the fastest speed that an ordinary person can achieve, it is impossible for the liquid surface to push the gravity ball group upward to this height. In addition, the adapter 57 is equipped with a one-way valve 56. For the air pressure to exceed the threshold of the one-way valve 56, an additional pressure is required. Therefore, the situation described above will not occur during normal use.

[0086] The present invention also provides another series of specific embodiments.

[0087] In one specific embodiment, a water-blocking vent valve 54 is provided at the pre-pressure relief port 52. Here, the water-blocking vent valve 54 completely replaces the elastic sleeve 541 in the aforementioned embodiment. Further, water-blocking vent valves 54 are provided at the pre-pressure relief ports 52 at both ends of the pipe body 50 of the pressure regulating pipe assembly 5, and a trumpet-shaped elastic sleeve 541 is provided on the side of the water-blocking vent valve 54 closest to the inside of the pipe. The function of the water-blocking vent valve 54 is to keep the air passage of the pressure relief channel 51 unobstructed when passing through the pre-pressure relief port 52, allowing gas to flow freely inside and outside the pressure relief channel 51 to balance the pressure, while simultaneously preventing water from entering the pressure relief channel 51, thereby further protecting the gravity ball 53 inside the pipe from the influence of impurities. Furthermore, the water-blocking vent valve 54 has a flared elastic sleeve 541 on the side near the inside of the pipe. The elastic sleeve 541 is made of elastic material such as silicone. Its function is to provide sufficient opening for gas flow to reduce resistance. When water attempts to enter the pressure relief channel 51, due to its elastic properties, the elastic sleeve 541 can tightly seal the inlet of the water-blocking vent valve 54, forming a seal and effectively preventing water from passing through. The elastic sleeve 541 also effectively reduces the noise generated by the movement of the gravity ball 53. When the gravity ball 53 is in complete contact with the elastic sleeve 541 on one side, the pre-pressure relief port 52 on that side is in an airtight closed state. The water-blocking vent valve 54 can utilize its natural physical property of allowing air but not water to block water from entering the pressure relief channel 51, thereby further protecting the gravity ball 53 inside the pipe from impurities. The complex structure of the vent hole 54a and vent groove 54c in the aforementioned elastic sleeve 541 is eliminated, and the function of the water-blocking vent valve 54 is realized by using a simpler structure.

[0088] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A water tank for a cleaning device, characterized in that, include: The water tank body is hollow, forming a cavity to hold the cleaning liquid, and has a semi-closed end at one end. The filter assembly is installed inside the water tank body; An interface assembly, detachably connected to the semi-enclosed end, is used for the entry and exit of cleaning liquid and / or gas into and out of the cavity. The interface assembly is provided with a wastewater return port, a clean water outlet, and an exhaust port. The pressure regulating pipe assembly is located at the center of the top opening axis of the filter assembly within the filter assembly. The pressure regulating pipe assembly includes a pipe body and at least one gravity ball that can smoothly roll along the entire length of the pipe body. The pipe body is straight and has openings at both ends to form pressure relief channels. A converging adapter is provided on the side wall at the center of the pipe body. Pre-pressure relief ports located at both ends of the pipe body openings and connecting to the pressure relief channels are provided to cooperate with the converging adapter to connect to the exhaust channel of the interface assembly. The tube body uses its relatively closed tubular structure to prevent the gravity ball inside the tube from contacting impurities. At least one pre-pressure relief port is provided at each end of the tube body. At least one pre-pressure relief port connects the pressure relief channel to the space above the surface of the cleaning liquid. The gravity ball can open at least one pre-pressure relief port by its own weight to connect the air above the liquid surface with the outside atmosphere. A centrally penetrating elastic sleeve is provided on the side of the pre-pressure relief port near the tube body. The center of the elastic sleeve is provided with a vent hole that connects the pressure relief channel and the cavity. The end of the elastic sleeve facing the center of the tube body is provided with a bowl-shaped opening. The inner sidewall of the bowl-shaped opening is arc-shaped and matches the outer spherical surface of the gravity ball. The end of the elastic sleeve away from the center of the tube body is provided with at least one vent groove that connects the vent hole to the periphery of the elastic sleeve. At the pre-pressure relief port, the tube body is provided with at least one vent groove corresponding to the vent groove. The pressure regulating pipe assembly connects the cavity to the outside atmosphere through the exhaust port of the interface assembly in order to regulate the air pressure inside the cavity.

2. The water tank of the cleaning device according to claim 1, characterized in that, The exhaust passage includes an exhaust pipe, one end of which is connected to the convergence adapter, and the other end is connected to the exhaust port of the interface assembly. The two venting grooves converge at the vent hole in a V-shape, and the V-shaped venting grooves connect to the venting grooves of the pipe body, or the venting grooves are arranged in multiple radial lines centered on the vent hole.

3. The water tank of the cleaning device according to claim 2, characterized in that, The filter assembly includes a filter bracket with a top opening. The filter bracket is covered with a filter screen on its other outer periphery. When the filter bracket is engaged with the water tank body, the top opening is closed by the top wall of the water tank body. The pressure regulating pipe assembly is located on the axis of symmetry of the top opening.

4. The water tank of the cleaning device according to claim 3, characterized in that, The front and rear side walls of the filter assembly are provided with grooves at the center of the top opening axis of symmetry. Both ends of the tube body are provided with snap-fit ​​ears, which are snapped into the grooves. The pressure regulating tube assembly and the filter assembly together constitute a pressure regulating mechanism that connects the inside and outside of the cavity.

5. The water tank of the cleaning device according to claim 4, characterized in that, There are at least three gravity balls. A centrally penetrating elastic sleeve is provided on the side of the pre-pressure relief port near the pipe body. The end of the elastic sleeve facing the center of the pipe body has a bowl-shaped opening. The inner sidewall of the bowl-shaped opening is arc-shaped and matches the outer spherical surface of the gravity ball. When the gravity ball and the inner sidewall of the elastic sleeve cooperate, an air seal is formed to block the communication between the pre-pressure relief port and the cavity.

6. The water tank of the cleaning device according to claim 2, characterized in that, The exhaust passage includes: Adapter, detachably connected to the convergence adapter; The exhaust pipe connects to the adapter at one end and to the exhaust port of the interface assembly at the other end.

7. The water tank of the cleaning device according to claim 6, characterized in that, The exhaust passage also includes a one-way valve located inside the adapter; When the chamber is overpressurized, the one-way valve opens, and the gas is discharged to the outside of the water tank through the exhaust pipe to balance the gas pressure.

8. The water tank of the cleaning device according to claim 5, characterized in that, The sum of the diameters of the gravity ball along the axial direction of the pipe body is less than the horizontal distance from the converging junction to the pre-pressure relief port at either end.

9. The water tank of the cleaning device according to claim 2, characterized in that, The filter support has a cavity inside. On the side of the filter support near the interface component, there is an exhaust port and a water outlet port that connect to the cavity. The exhaust port is connected to the exhaust interface, and the water outlet port is connected through the cavity and is connected to the clean water outlet.

10. The water tank of the cleaning device according to claim 9, characterized in that, The semi-closed end of the water tank body is provided with a bayonet at the connection point with the interface component. The vent port and the water outlet port abut against the bayonet. The bayonet is also provided with a sewage pipe that is connected to the depth of the water tank body cavity.

11. The water tank of the cleaning device according to claim 10, characterized in that, The cleaning device is equipped with a clean water channel and a wastewater channel. The interface component includes a docking end cover that can abut against the cleaning device. The docking end cover is equipped with a clean water outlet, an exhaust port, and a wastewater return port. The clean water outlet is connected to the clean water channel, the exhaust port exhausts the air to the outside atmosphere, and the wastewater return port is connected to the wastewater channel.

12. The water tank of the cleaning device according to claim 11, characterized in that, Two-way shut-off valves are installed at the connection between the clean water outlet and the clean water channel, and at the connection between the exhaust port and the exhaust channel. When the docking end cover comes into contact with the cleaning device, the two-way shut-off valve is in the open state, and the clean water channel and the exhaust channel are connected to the outside of the water tank. When the water tank is removed, the docking end cover is separated from the cleaning device, the two-way shut-off valve returns to the closed state, and the clean water channel and the exhaust channel are closed.

13. The water tank of the cleaning device according to claim 11, characterized in that, A sewage shut-off valve is installed at the connection between the sewage return outlet and the sewage channel. When the docking end cover abuts against the cleaning device, the compressed sewage shut-off valve is in the open state, and the sewage channel is connected to the outside of the water tank. When the water tank is removed, the docking end cover separates from the cleaning device, the sewage shut-off valve returns to the closed state, and the sewage channel is closed.

14. The water tank of the cleaning device according to claim 9, characterized in that, The filter support cavity is equipped with a locking element, and the filter screen assembly is detachably connected to the water tank body through the locking element. The locking element includes a locking tongue, a spring, and a fixing cover.

15. The water tank of the cleaning device according to claim 2, characterized in that, The water tank body has an open end opposite the semi-closed end. The cleaning device also includes the following components with water tank: A water tank cover assembly is placed over the open end to seal the cavity.

16. The water tank of the cleaning device according to claim 15, characterized in that, A sealing ring is provided on the inner edge where the water tank cover assembly connects to the water tank body.

17. The water tank of the cleaning device according to any one of claims 2-16, characterized in that, A water-blocking and air-venting valve is installed at the pre-release port.

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