Wastewater tank and cleaning device for cleaning device

Abstract

The present application belongs to the technical field of cleaning devices, and discloses a sewage tank and a cleaning device for a cleaning device. The sewage tank comprises: a box body, on which a sewage channel connected to the cleaning device is arranged; a partition plate is arranged in the box body, and the partition plate divides the internal space of the box body into an upper space and a lower space. The sewage channel extends upward from the lower space through the partition plate to the upper space. An anti-backflow structure is constructed on the partition plate, and the sewage entering the upper space of the box body through the sewage channel can enter the lower space for storage at least through the anti-backflow structure, and the anti-backflow structure prevents the sewage in the lower space from flowing through it and entering the upper space. The anti-backflow structure in the sewage tank can prevent the sewage from entering the motor when the cleaning device is laid flat for use, thereby making it convenient for the user to use the cleaning device.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning devices, and in particular to a sewage tank for a cleaning device. The present application also relates to a cleaning device comprising such a sewage tank. Background Art

[0002] With the development of technology, a floor scrubber with a water spraying function has been developed to clean the floor more effectively. The floor scrubber includes a clean water tank, a water spraying system connected to the clean water tank, a recovery system, and a sewage tank connected to the recovery system; the recovery system includes a motor arranged above the sewage tank. When the floor scrubber is in use, the water spraying system sprays water onto the ground, and the recovery system sucks the sewage into the sewage tank.

[0003] However, when using a conventional floor scrubber, the body of the floor scrubber cannot be tilted greatly to clean a location such as under a bed, because water in the sewage tank may enter the motor, causing the motor to stop, or even damaging the floor scrubber. Summary of the invention

[0004] The present application provides a sewage tank for a cleaning device, and a cleaning device. An anti-backflow structure is arranged in the sewage tank to prevent sewage from entering the motor when the cleaning device is laid flat for use.

[0005] According to the first aspect of the present application, a sewage tank for a cleaning device comprises: a box body, a sewage channel connected to the cleaning device is provided on the box body; a partition plate is provided in the box body, and the partition plate divides the internal space of the box body into an upper space and a lower space. The sewage channel extends upward from the lower space through the partition plate to the upper space. An anti-backflow structure is constructed on the partition plate, and the sewage entering the upper space of the box body through the sewage channel can enter the lower space for storage at least through the anti-backflow structure, and the anti-backflow structure prevents the sewage in the lower space from flowing through it and entering the upper space.

[0006] In one embodiment, at least a first portion of the edge of the partition plate is in sealing contact with the side wall of the box body. A first hole group is provided on the partition plate. The anti-backflow structure includes an anti-return valve installed on the partition plate corresponding to the first hole group and located in the lower space, and the anti-return valve is connected to the upper space through the first hole group. Sewage from the upper space can enter the lower space for storage via at least the first hole group and the anti-return valve, and the anti-return valve prevents the sewage in the lower space from flowing through it and entering the upper space.

[0007] In one embodiment, the anti-return valve comprises a joint and a valve body that is deformable under pressure, and the joint is mounted on the partition plate. The anti-return valve is configured such that sewage from the upper space can open the valve body and flow into the lower space for storage; the valve body can be closed by the pressure exerted on the outer surface by the sewage in the lower space, thereby preventing the sewage in the lower space from flowing through it and entering the upper space.

[0008] In one embodiment, the valve body is a flexible flat-mouth valve body.

[0009] In one embodiment, a second hole group is further configured on the partition plate, the second hole group is offset from the first hole group in the circumferential direction of the partition plate, and the second hole group freely passes through the upper space and the lower space.

[0010] In one embodiment, the first set of holes is diametrically opposed to the second set of holes.

[0011] In one embodiment, the partition plate is a curved plate protruding toward the lower space, and the first hole group and / or the second hole group deviates from the lowest point of the partition plate.

[0012] In one embodiment, a barrier wall is uprightly arranged along the circumference of the partition plate, and the barrier wall at least extends into the upper space.

[0013] In one embodiment, the partition plate is further provided with an assembly hole which deviates from the first hole group and the second hole group; the sewage channel is configured as a sewage pipe which extends upward from the lower space through the assembly hole to the upper space.

[0014] In one embodiment, an annular baffle is arranged along the assembly hole, and the annular baffle extends into the upper space.

[0015] In one embodiment, a cover is provided at the opening at the top of the box, a transfer tube is provided in the box, the cover is in conflict with the transfer tube, the inlet of the transfer tube is aligned with the sewage outlet of the sewage pipe, and the outlet of the transfer tube is away from the cover.

[0016] In one embodiment, the transfer pipe and the sewage pipe are an integrated structure or a separate structure.

[0017] In one embodiment, a handle is configured on the partition panel, and the handle extends toward the opening of the box body.

[0018] In one embodiment, a water level probe set is disposed on the cover body, and the water level probe set extends toward the lower space.

[0019] In one embodiment, the water level probe group includes a first probe group and a second probe group extending toward the lower space; the second probe group extends into the upper space and is located directly above the first hole group, and the extension length of the first probe group is greater than that of the second probe group.

[0020] In one embodiment, the first probe set extends into the lower space.

[0021] In one embodiment, the cover body is also constructed with a pair of baffles extending into the upper space and spaced apart in the circumferential direction, and at least a portion of the side edge of each baffle is spaced apart from the side wall of the box body; the sewage outlet of the sewage pipe is located between the baffles.

[0022] In one embodiment, a back plate is further constructed on the cover body. The back plate is located on the radially opposite side of the sewage outlet of the sewage pipe and both ends of the back plate are respectively connected to corresponding baffles.

[0023] In one embodiment, the back plate extends to a lesser extent than the baffles.

[0024] In one embodiment, a gas outflow channel is provided on the cover body, the inlet of the gas outflow channel is communicated with the upper space and deviates from the outlet of the transfer tube in the circumferential direction, and a filter is provided at the outlet of the gas outflow channel.

[0025] The cleaning device according to the second aspect of the present application comprises a shaft, a cleaning member is mounted on the first end of the shaft, a handle is constructed on the second end of the shaft, and a liquid treatment assembly is mounted on the shaft, the liquid treatment assembly comprises the sewage tank described above.

[0026] In one embodiment, a mounting area that cooperates with the rod shaft is constructed on the circumferential outer surface of the box body, the sewage tank is arranged on the rear side of the rod shaft, and the anti-backflow structure is radially away from the mounting area; or the sewage tank is arranged on the front side of the rod shaft, and the anti-backflow structure is radially close to the mounting area.

[0027] Beneficial effects of the present application: The present application provides a sewage tank for a cleaning device, and a cleaning device. A partition is provided in the sewage tank to divide the tank into an upper space and a lower space, and an anti-backflow structure is provided on the partition. When the cleaning device is laid flat for use, the anti-backflow structure can prevent the sewage in the lower space from flowing into the upper space, so that the sewage will not flow to the motor, and the motor will not stop, and the cleaning device can still perform cleaning work normally. This greatly facilitates the user to use the cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a cleaning device according to an embodiment of the present application.

[0029] Figure 2 is a cross-sectional view of a sewage tank according to an embodiment of the present application.

[0030] Figure 3 The box is shown schematically.

[0031] Figure 4 The separator plates are shown schematically.

[0032] Figure 5 It is a schematic diagram of an anti-reverse valve according to an embodiment of the present application.

[0033] Figure 6 The open state of the anti-return valve is schematically shown.

[0034] Figure 7 The closed state of the anti-return valve is schematically shown.

[0035] Figure 8 A cross-sectional view of another form of an anti-return valve is schematically shown.

[0036] Fig. 9 The structure of the cover is schematically shown.

[0037] Fig.10 The diagram schematically shows the state where the partition plate is installed in the box.

[0038] Fig.11 The diagram schematically shows the state in which the cleaning device is laid flat for use.

[0039] Fig.12 A cleaning device according to another embodiment of the present application is schematically shown. DETAILED DESCRIPTION

[0040] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only the parts related to the present application, rather than all structures, are shown in the accompanying drawings.

[0041] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0044] In addition, the terms “first” and “second” are merely used for distinction in description and have no special meanings.

[0045] In the embodiments of the present application, Figure 1 As shown in FIG. 1 , the direction of arrow A is “rear”, and the direction opposite to arrow A is “front”. Figure 2 As shown, the direction of arrow I is "up", and the direction opposite to arrow I is "down".

[0046] Figure 1 A cleaning device 1 according to an embodiment of the present application is schematically shown. Figure 1 As shown, the cleaning device 1 includes a shaft 10, a cleaning member 11 (e.g., a floor brush) is mounted on the first end of the shaft 10, a handle 12 is configured at the second end of the shaft 10, and a liquid treatment assembly 13 is mounted on the shaft 10. The liquid treatment assembly 13 may include a motor 14, a clean water tank (not shown in the figure), a dirty water tank 20 (described in detail below), a water spraying system (not shown in the figure), a recovery system (not shown in the figure), and other structures, wherein the motor 14, the clean water tank, the water spraying system, and the recovery system are well known to those skilled in the art and will not be described in detail here.

[0047] When the cleaning device 1 is in use, the water spraying system sprays clean water from the clean water tank onto the ground to wet the ground; the recovery system sucks the sewage into the sewage tank 20, thereby cleaning the ground.

[0048] Next, the sewage tank 20 will be described in detail.

[0049] Figure 2 The overall structure of the sewage tank 20 is schematically shown. Figure 3 The internal structure of the sewage tank 20 is shown in a cross-sectional view. Figure 2 and 3As shown, the sewage tank 20 includes a housing 201, on which a sewage channel 202 communicating with the cleaning device 1 is provided. A partition plate 203 is provided in the housing 201, and the partition plate 203 divides the internal space of the housing 201 into an upper space 204 and a lower space 205. The sewage channel 202 extends upward from the lower space 205 through the partition plate 203 to reach the upper space 204. An anti-backflow structure 30 is configured on the partition plate 203, so that the sewage entering the upper space 204 of the housing 201 from the sewage channel 202 can enter the lower space 205 for storage at least via the anti-backflow structure 30, and the anti-backflow structure 30 prevents the sewage in the lower space 205 from flowing through it and entering the upper space 204.

[0050] For the cleaning device 1 with the sewage tank 20, when the shaft 10 (or the sewage tank 20) ​​is generally upright (for example, when the angle relative to the horizontal plane is 90 degrees or greater than or equal to 60 degrees, hereinafter referred to as "upright"), the sewage will be sucked into the sewage channel 202, flow into the upper space 204 from the sewage channel 202, and then enter the lower space 205 through the anti-backflow structure 30 and be stored in the lower space 205. When the shaft 10 (or the sewage tank 20) ​​is greatly tilted (for example, the angle relative to the horizontal plane is less than or equal to 30 degrees, or even the angle relative to the horizontal plane is about 2 degrees, hereinafter referred to as "flat"), the anti-backflow structure 30 will prevent the sewage in the lower space 205 from flowing back through the anti-backflow structure 30 and entering the upper space 204, so that the sewage will not flow to the motor 14, and the motor 14 will not stop rotating, and the cleaning device 1 can still perform the cleaning work normally. Therefore, the cleaning device 1 with the sewage tank 20 can not only use the shaft 10 upright, but also can tilt the shaft 10 greatly or even lay it flat for use, which greatly facilitates the use of the user.

[0051] Also like Figure 1 As shown, the sewage tank 20 is disposed at the rear side of the shaft 10. In this case, as Fig.10 As shown, a mounting area 250 is configured on the circumferential outer surface of the box body 201 to match the shaft 10, and the anti-backflow structure 30 is radially away from the mounting area 250. From the overall view of the cleaning device 1, the mounting area 250 is located at the front side of the box body 201, and the anti-backflow structure 30 is located inside the box body 201 close to the rear side of the box body 201 (such as Figure 1 Thus, when the cleaning device 1 is laid flat (as shown in FIG. Fig.10 and 11 As shown), the backflow prevention structure 30 is closed and in a low position (for example, relative to the second hole group 210 described below), thereby preventing the sewage in the lower space 205 from flowing through it and entering the upper space 204, and the cleaning device 1 can be used normally.

[0052] It should be understood that in other types of cleaning devices, the sewage tank 20 may also be disposed in front of the shaft 10 (e.g. Fig.12 ), as long as the cleaning device 1 is laid flat for use and the backflow prevention structure 30 is set in the appropriate position, this is well known to those skilled in the art and will not be described in detail here. In addition, it should be noted that, if Fig.12 As shown, the sewage tank 20 is arranged at the front side of the rod body 10, and the anti-backflow structure 30 is close to the installation area 250 in the radial direction. Fig.12 As shown), the backflow prevention structure 30 is closed and in a low position (for example, relative to the second hole group 210 described below), thereby preventing the sewage in the lower space 205 from flowing through it and entering the upper space 204, and the cleaning device 1 can be used normally.

[0053] exist Figure 2 and 3 In the sewage tank 20 shown, a cover 216 is provided at the pouring opening at the top of the box body 201, and a gas outflow channel 218 is provided on the cover 216. The inlet 219 of the gas outflow channel 218 is communicated with the upper space 204. The motor 14 is arranged to be communicated with the outlet 221 of the gas outflow channel 218 to extract air from the box body 201, thereby sucking sewage into the box body 201 through the sewage channel 202. In one embodiment, a filter element (not shown in the figure) is provided at the outlet 221 of the gas outflow channel 218. The filter element can filter out fine solid garbage in the gas to prevent garbage blockage at the motor 14. The filter element can be, for example, HEPA to improve the filtering effect.

[0054] In another embodiment, a cyclone separation structure 260 is provided in the gas outflow channel 218. When the gas flows through the cyclone separation structure 260, the cyclone separation structure 260 will separate part of the solid waste carried by the gas, and the remaining solid waste will be filtered out by the filter element. The cyclone separation structure 260 can be formed integrally with the cover 216 to facilitate cleaning thereof. In addition, by providing the cyclone separation structure 260, the workload of the filter element is reduced, the frequency of maintenance or replacement of the filter element is reduced, and the user is convenient to use the cleaning device 1.

[0055] Figure 4 The structure of the partition plate 203 is schematically shown. Figure 4 As shown, a first hole group 301 is configured on the partition plate 203. The anti-reverse flow structure 30 includes an anti-reverse flow valve 302 installed on the partition plate 203 corresponding to the first hole group 301. The anti-reverse flow valve 302 is located in the lower space 205 and communicates with the upper space 204 through the first hole group 301. In addition, at least a first portion (e.g., Figure 4206 in the figure) is in sealing contact with the side wall of the box body 201. In one embodiment, a sealing ring can be set between the edge of the partition plate 203 and the side wall of the box body 201 to achieve sealing contact between the two. Through this structure, when the shaft 10 is laid flat, the anti-return valve 302 will prevent the sewage in the lower space 205 from flowing through it and entering the upper space 204; in addition, the seal between the edge of the partition plate 203 and the side wall of the box body 201 will also prevent the sewage in the lower space 205 from entering the upper space 204. In this way, it is also possible to prevent the sewage from being sucked into the motor 14, and the cleaning device 1 can be laid flat for use. In addition, when cleaning the sewage tank 20 and removing the partition plate 203 from the box body 201, the first hole group 301 will filter out the solid waste in the sewage, that is, the sewage is stored in the box body 201, and the solid waste is carried on the partition plate 203, thereby achieving separation of solid waste from sewage. Solid waste can be poured into the waste basket separately, and sewage can be poured into a discharge device such as a toilet or a sink, thereby effectively preventing the discharge device such as the toilet or the sink from being blocked. In addition, the partition plate 203 with the first hole group 301 and the anti-return valve 302 has a simple structure, a simple manufacturing process and a low cost, and is easy to use in the cleaning device 1.

[0056] Figure 5 The anti-reverse valve 302 according to one embodiment of the present application is schematically shown. Figure 3 and 5 As shown, the anti-return valve 302 includes a joint 303 and a flexible flat valve body 304. The joint 303 is installed on the partition plate 203 corresponding to the first hole group 301. In order to facilitate the installation of the anti-return valve 302, Figure 3 In the illustrated embodiment, a conduit 208 is configured on the lower surface of the partition plate 203 corresponding to the first hole group 301, and a joint 303 is connected to the conduit 208. The joint 303 can be configured to be elastic so as to be conveniently sleeved on the conduit 208, and then selectively fixed with a clamp or other fixing member. The joint 303 and the conduit 208 can also be flange-connected together. Of course, those skilled in the art can also use other methods to install the anti-return valve 302 on the partition plate 203, which will not be described here.

[0057] The flexible flat valve body 304 can be made of materials such as rubber, and the joint 303 can also be made of the same material as the flat valve body 304 if it is elastic. The outer surface of the flat valve body 304 is configured as a plane 305, and the plane 305 will close the flat valve body 304 under the pressure of the external environment. Figure 6 As shown, the pressure P1 of the sewage in the upper space 204 acts on the flat valve body 304 and opens the flat valve body 304, and the sewage flows into the lower space 205 for storage. Figure 7As shown, the pressure P2 of the sewage in the lower space 205 acts on the outer surface of the flat valve body 304 and closes the flat valve body 304, thus preventing the sewage in the lower space 205 from flowing out of the flat valve body 304. At this time, the water temporarily stored in the upper space 204 is concentrated at the partition plate 203, away from the inlet 219 of the gas outflow channel 218, and the amount of water is very small and will not be drawn out from the box body 201, thereby greatly reducing the probability of the motor 14 stopping or being damaged. It should also be understood that when the cleaning device 1 is used flat, if there is no or only a small amount of sewage in the lower space 205, causing the anti-return valve 302 to not be closed, the sucked sewage will also be temporarily stored in the upper space 204 and close to the partition plate 203 (part of the sewage may flow into the lower space 205), and will not be drawn out from the box body 201, so that the motor 14 will not stop or be damaged.

[0058] In another embodiment, the anti-return valve 302 may also be an elastic valve sheet 309 (such as a valve plate 309) disposed on the lower surface of the partition plate 203 corresponding to the first hole group 301. Figure 8 When the cleaning device 1 is used upright, the elastic valve plate 309 is pushed open toward the lower space 205 (as shown in FIG. 2 ) under the pressure of the sewage in the upper space 204. Figure 8 ), the sewage flows into the lower space 205 for storage. When the cleaning device 1 is laid flat, the sewage in the lower space 205 presses the elastic valve sheet 309 against the partition plate 203 and closes the first hole group 301, thus preventing the sewage in the lower space 205 from flowing out through the first hole group 301.

[0059] It should be understood that other types of anti-return valves may also be used to replace Figure 5 The anti-return valve 302 shown in the figure, as long as it can achieve the same function as the anti-return valve 302, is well known to those skilled in the art and will not be described in detail.

[0060] In order to facilitate the removal of the partition plate 203 from the box body 201, the partition plate 203 is detachably installed in the box body 201. Figure 4 As shown in FIG. 2 , a handle 207 is constructed on the partition plate 203, and the handle 207 extends toward the opening of the box body 201. In this way, when cleaning the sewage tank 20, the handle 207 can be lifted up to conveniently lift the partition plate 203 out of the box body 201, and the solid waste can also be taken out of the box body 201, thereby achieving the separation of solid waste and sewage.

[0061] In another embodiment, the partition plate 203 may also be directly connected to the cover 216. In this way, when the cover 216 is removed, the partition plate 203 is also removed at the same time. This can prevent the sewage from being mixed with the solid waste again due to forgetting to remove the partition plate 203 when dumping the sewage.

[0062] In another embodiment, the partition plate 203 is a curved plate protruding toward the lower space 205, and the first hole group 301 deviates from the lowest point of the partition plate 203. With this structure, solid waste will be concentrated at the lowest point of the partition plate 203, thereby reducing the probability of the first hole group 301 being blocked by solid waste, which further facilitates the user to use the cleaning device 1.

[0063] Also like Figure 4 As shown, a second hole group 210 is also constructed on the partition plate 203, and the second hole group 210 freely connects the upper space 204 and the lower space 205. During use, sewage can flow into the lower space 205 through the first hole group 301, and the air in the lower space 205 can flow to the upper space 204 through the second hole group 210 and then be sucked away by the motor 14, so that the sewage can flow out of the lower space 205 smoothly. It should be understood that some sewage can still flow into the lower space 205 from the second hole group 210. In addition, when the partition plate 203 is removed from the box body 201, the second hole group 210 can also filter solid waste, which will not be repeated here.

[0064] The second hole group 210 deviates from the first hole group 301 in the circumferential direction of the partition plate 203. In this way, when the cleaning device 1 is laid flat for use, the anti-return valve 302 is closed, and the sewage in the lower space 205 will not flow out through the second hole group 210. In a specific embodiment, the first hole group 301 and the second hole group 210 are radially opposite. In this way, even if there is a lot of sewage in the lower space 205, it will not flow out through the second hole group 210. This further facilitates the user to use the cleaning device 1.

[0065] It should be understood that in order to prevent sewage from flowing out of the lower space 205 when the cleaning device 1 is used at an angle, only the second hole group 210 can be constructed on the partition plate 203 without setting the first hole group 301, as long as the cleaning device 1 is set not to be tilted in the direction of the second hole group 210.

[0066] It should also be understood that when the partition plate 203 is configured as a curved plate, the second hole group 210 also deviates from the lowest point of the partition plate 203. In this way, the probability of the second hole group 210 being blocked by solid waste is reduced, thereby making it easier for users to use the cleaning device 1.

[0067] Also like Figure 4As shown, a retaining wall 211 is vertically arranged along the circumference of the partition plate 203, and the retaining wall 211 at least extends into the upper space 204. When the partition plate 203 is lifted out of the box body 201, the retaining wall 211 can prevent the solid waste from falling and then falling into the box body 201. In another embodiment, a drainage hole can be constructed on the retaining wall 211, which can not only prevent the solid waste from falling, but also allow the sewage to be discharged into the box body 201 as much as possible, thereby improving the separation effect of solid waste and sewage. In a specific embodiment, a bracket 212 can be vertically arranged along the circumference of the partition plate 203, and then a filter screen 213 is arranged on the bracket 212, thereby forming the retaining wall 211 with the drainage hole.

[0068] In addition, when the retaining wall 211 is constructed, the handle 207 can be connected to the retaining wall 211 or can be integrally formed with the retaining wall 211, which will not be described in detail here.

[0069] Still Figure 3 and 4 As shown, a mounting hole 214 is also provided on the partition plate 203. The mounting hole 214 deviates from the first hole group 301 and the second hole group 210. The sewage channel 202 is configured as a sewage pipe and extends upward from the lower space 205 through the mounting hole 214 to the upper space 204. In this way, the partition plate 203 can be conveniently assembled into the box body 201. In a specific embodiment, the mounting hole 214 is in sealing contact with the sewage pipe (for example, a sealing ring can be provided) to prevent sewage from flowing out of the lower space 205 when the cleaning device 1 is laid flat.

[0070] In an embodiment not shown, the sewage channel 202 may also be configured such that its sewage opening is on the side wall of the box body 201 and communicates with the upper space 204. In another embodiment not shown, a top wall is provided on the top of the box body 201, a pouring opening is provided on the top wall, and a cover 216 covers the pouring opening; in this case, the sewage opening of the sewage channel 202 is provided on the top wall of the box body 201 and communicates with the upper space 204.

[0071] In one embodiment, Figure 2 As shown, the sewage pipe and the housing 201 are an integrated structure, for example, they can be formed as one piece by injection molding, which is simple and convenient to manufacture. In another embodiment, the sewage pipe and the housing 201 can also be a split structure, so that when necessary, the sewage pipe can be removed from the housing 201 to thoroughly clean the sewage tank 202 and / or the housing 201. In the case where the sewage pipe and the housing 201 are a split structure, the two can be threadedly connected or sealed and clamped together.

[0072] In another embodiment, an annular baffle 215 is provided along the assembly hole 214, and the annular baffle 215 extends into the upper space 204. With this structure, the sewage pipe extends through the annular baffle 215, so that when the cleaning device 1 is tilted or laid flat, the partition plate 203 (together with the baffle wall 211) will not be skewed in the box body 201, and the anti-backflow structure 30 on the partition plate 203 will remain in its original position, thereby ensuring that sewage will not flow out of the lower space 205 through the anti-backflow structure 30.

[0073] Also like Figure 3 As shown, a transfer tube 217 is provided in the box 201, and the cover 216 contacts the transfer tube 217. Under the pressure of the cover 216, the transfer tube 217 is more stable and will not shake due to the impact of sewage from the sewage pipe, even when the sewage flow rate is fast.

[0074] The inlet 223 of the transfer tube 217 is aligned with the sewage outlet 224 of the sewage pipe, and the outlet 220 of the transfer tube 217 deviates from the cover body 216. For example, the end of the transfer tube 217 facing the cover body 216 is closed, and the outlet 220 is arranged on the side wall of the transfer tube 217. This can extend the movement path of the water-gas mixture in the box body 201 and improve the gas-water separation effect; in addition, it can also reduce the risk of water being drawn into the gas outflow channel 218 and then reaching the motor 14, thereby improving the service life of the cleaning device 1. In another specific embodiment, the outlet 220 of the transfer tube 217 deviates from the inlet 219 of the gas outflow channel 218 in the circumferential direction. For example, the outlet 220 of the transfer tube 217 is opposite to the inlet 219 of the gas outflow channel 218 in the radial direction, and the height of the outlet 220 is lower than the height of the inlet 219, which maximizes the distance between the outlet 220 and the inlet 219, extends the movement path of the water-gas mixture in the box body 201, and improves the gas-water separation effect.

[0075] In one embodiment, the transfer tube 217 is an integrated structure with the sewage pipe, that is, the transfer tube 217 is a part of the sewage pipe. In this case, the transfer tube 217 is a straight pipe and its diameter is less than or equal to the diameter of the sewage pipe to facilitate passing through the assembly hole 214 of the partition plate 203.

[0076] In another embodiment, the transfer tube 217 and the sewage pipe are of separate structures, that is, the transfer tube 217 can be manufactured separately and then assembled with the sewage pipe. In this way, the sewage pipe can be manufactured as a straight pipe, and there is no need to consider the size relationship between the transfer tube 217 and the assembly hole 214, which simplifies the manufacturing of the sewage pipe and the transfer tube 217.

[0077] Also like Fig. 9As shown, a water level probe group 40 is provided on the cover 216, and the water level probe group 40 extends toward the lower space 205. The water level probe group 40 is used to monitor the sewage water level in the water tank 201. When the water level in the water tank 201 reaches a preset threshold value, the motor 14 will stop rotating and remind the user. In one embodiment, the water level probe group 40 adopts a bipolar water level probe. In another embodiment, the water level probe group 40 can also adopt a monopolar water level probe, or other forms of water level probes. This is well known to those skilled in the art and will not be repeated here.

[0078] Fig. 9 The water level probe set 40 is schematically shown. Figure 3 and 9 As shown, the water level probe group 40 includes a first probe group 401 and a second probe group 402 extending toward the lower space 205. The extension length of the first probe group 401 is greater than the extension length of the second probe group 402. The second probe group 402 extends into the upper space 204 and is directly above the first hole group 301. The first probe group 401 is used to monitor the water level in the water tank 201 when the cleaning device 1 is used upright; when the water level in the water tank 201 reaches a preset threshold, the motor 14 will stop rotating and remind the user. The second probe group 402 is used to monitor the water level in the water tank 201 when the cleaning device 1 is used flat. When the water level detected by the second probe group 402 reaches a preset threshold, the motor 14 will stop rotating and remind the user. As mentioned above, when the cleaning device 1 is laid flat for use, the anti-backflow structure 30 arranged on the partition plate 203 will prevent the sewage in the lower space 205 from flowing back into the upper space 204 through it, so that the motor 14 will not stop, and the cleaning device 1 can still perform cleaning work normally. At this time, the sewage sucked into the upper space 204 will accumulate in the upper space 204 at the partition plate 203. When the sewage accumulated in the upper space 204 is too much and flows to the cover 216, it will first flow to the second probe group 402. The second probe group 402 will generate a signal to instruct the motor 14 to stop rotating, thereby preventing the sewage from being sucked into the motor 14 and causing damage to the motor 14. Therefore, by setting the first probe group 401 and the second probe group 402, the water level in the box 201 can be monitored in real time to prevent the sewage from being sucked into the motor 14, causing damage to the motor 14. This greatly extends the service life of the cleaning device 1.

[0079] In one embodiment, the first probe group 401 extends into the lower space 205. In other words, the first probe group 401 extends through the partition plate 203 to reach the lower space 205. In this way, before the sewage water level in the box 201 reaches the partition plate 203, the first probe group 401 will detect the threshold water level, so that the motor 14 will stop rotating. This can further prevent the sewage from being sucked into the motor 14, and extend the service life of the cleaning device 1. Those skilled in the art can adjust the depth of the first probe group 401 into the lower space 205 according to actual conditions, which will not be repeated here.

[0080] In another embodiment, the first probe group 401 may also be in the upper space 204 and close to the partition plate 203. According to this structure, when the partition plate 203 is blocked, the sewage level in the lower space 205 is low, and the sewage accumulates in the upper space 204, the first probe group 401 can still accurately monitor the sewage level to prevent the sewage from being sucked into the motor 14. Those skilled in the art can adjust the position of the first probe group 401 in the upper space 205 according to actual conditions, which will not be repeated here. In addition, those skilled in the art can also extend the first probe group 401 into the lower space 205, or the upper space 204, or set the first probe group 401 in both the upper space 204 and the lower space 205 according to actual conditions, which will not be repeated here.

[0081] In another embodiment, the second probe set 402 is located above the outlet 220 of the transfer tube 217. This can prevent sewage from being directly sprayed onto the second probe set 402, thereby reducing the probability of misjudgment.

[0082] Also like Figure 2 and 9 As shown, the cover body 216 is also constructed with a pair of baffles 403 extending into the upper space 204, and the pair of baffles 403 are spaced apart in the circumferential direction. Part of the side edge 405 of each baffle 403 is spaced apart from the side wall of the box body 201. The sewage outlet 224 of the sewage pipe is located between the baffles 403. The baffles 403 can guide the sewage splashed thereon to flow downward, thereby preventing the sewage from splashing around in the box body 201 and adversely affecting the user experience of the cleaning device 1. In addition, the air sucked into the box body 201 from the sewage pipe needs to bypass the baffles 403 to reach the inlet 219 of the gas outflow channel 218 on the cover body 216, thereby making the movement path of the water-gas mixture more tortuous, extending the movement path of the water-gas mixture in the box body 201, and improving the gas-water separation effect. As also shown Fig. 9 As shown, the second probe group 402 may also be located between the baffles 403. This makes the structure of the cover 216 more compact, which is convenient for reducing the radial dimension of the sewage tank 20, thereby making the cleaning device 1 more concise and flexible, and convenient for cleaning a narrow space.

[0083] In a specific embodiment, the upper region 406 of the side edge 405 of the baffle 403 contacts the side wall of the box 201, the lower region 407 is spaced apart from the side wall of the box 201, and the sewage outlet 224 of the sewage pipe is arranged to correspond to the upper region 406 of the side edge 405. With this structure, the baffle 403 can not only prevent sewage from splashing around in the box 201, but also force the water-gas mixture to be deflected downwards before passing over the baffle 403, so that the movement path of the water-gas mixture in the box 201 is longer, and the gas-water separation effect is better.

[0084] In addition, a back plate 404 is also constructed on the cover body 216, and the back plate 404 is located on the radially opposite side of the sewage outlet 224 of the sewage pipe and is connected to the corresponding baffles 403 at both ends. The inlet 219 of the gas outflow channel 218 is located on the radial outer side of the back plate 404. Through this structure, the water-gas mixture must flow downward over the back plate 404 before reaching the inlet 219 of the gas outflow channel 218, which also helps to extend the movement path of the water-gas mixture in the box 201, and the gas-water separation effect is also better. In a specific embodiment, the extension length of the back plate 404 is less than the extension length of the baffle 403. This can avoid the baffle 403 and the back plate 404 from excessively blocking the path of the water-gas mixture. When using the cleaning device 1, the airflow is smooth and the use experience is good. Those skilled in the art can construct the extension length of the back plate 404 in the box 201 according to actual conditions.

[0085] In the case where the transfer tube 217 and the sewage pipe are separate, a water baffle (not shown in the figure) can also be arranged between the outlet 220 of the transfer tube 217 and the second probe set 402. The water baffle is in contact with the side wall of the box 201. In this way, the water baffle separates the second probe set 402 from the outlet 220 of the transfer tube 217, thereby more effectively preventing sewage from being directly sprayed onto the second probe set 402 and further reducing the probability of misjudgment.

[0086] Different usage scenarios of the cleaning device 1 are described below.

[0087] Scenario 1:

[0088] like Figure 1As shown, when the cleaning device 1 is used upright, the motor 14 rotates, and after the water spraying system is started, clean water is sprayed from the clean water tank to the ground. Sewage is sucked into the upper space 204 of the box body 201 through the sewage channel 202 (i.e., the sewage pipe). Sewage flows into the lower space 205 for storage through the first hole group 301 (and the anti-return valve 302) and the second hole group 210 on the partition plate 203. Solid waste in the sewage is filtered by the partition plate 203 and remains in the upper space 204. When the first probe group 401 detects that the sewage water level in the box body 201 reaches the threshold, the motor 14 stops rotating and reminds the user.

[0089] Scenario 2:

[0090] like Fig.11 As shown, when the cleaning device 1 is laid flat for use, the sewage in the lower space 205 is retained in the lower space 205 by the anti-backflow structure 30 on the partition plate 203. The motor 14 rotates, and after the water spraying system is started, clean water is sprayed from the clean water tank to the ground, and the sewage is sucked into the upper space 204 of the box body 201 through the sewage channel 202 (i.e., the sewage pipe). At this time, the sewage is temporarily stored in the upper space 204, the motor 14 rotates normally, and the cleaning device 1 is used normally.

[0091] When the second probe group 402 detects that the water level of the sewage temporarily stored in the upper space 204 reaches a threshold, the motor 14 stops rotating and reminds the user.

[0092] When the cleaning device 1 is erected, the sewage temporarily stored in the upper space 204 will flow into the lower space 205 through the first hole group 301 (and the anti-return valve 302 ) and / or the second hole group 210 .

[0093] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation methods of the present application. For those of ordinary skill in the art, various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present application. It is not necessary and impossible to list all implementation methods exhaustively here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A sewage tank (20) for a cleaning device (1), comprising: A box body (201), wherein the box body (201) is provided with a sewage channel (202) connected to the cleaning device (1); Features: A removable partition plate (203) is provided in the box body (201), and the partition plate (203) divides the internal space of the box body (201) into an upper space (204) and a lower space (205); the sewage channel (202) extends upward from the lower space (205) through the partition plate (203) to reach the upper space (204); The partition plate (203) is provided with an anti-backflow structure (30), and sewage entering the upper space (204) of the box body (201) through the sewage channel (202) can at least enter the lower space (205) for storage via the anti-backflow structure (30). The anti-backflow structure (30) prevents the sewage in the lower space (205) from flowing through it and entering the upper space (204). At least a first portion (206) of the edge of the partition plate (203) is in sealing contact with the side wall of the box body (201), The backflow prevention structure (30) is arranged below the partition plate (203).

2. The sewage tank (20) for the cleaning device (1) according to claim 1, characterized in that: A first hole group (301) is provided on the partition plate (203). The anti-reverse flow structure (30) comprises an anti-reverse flow valve (302) which is installed on the partition plate (203) and located in the lower space (205) corresponding to the first hole group (301). The anti-return valve (302) is in communication with the upper space (204) via the first hole group (301). Sewage from the upper space (204) can enter the lower space (205) for storage via at least the first hole group (301) and the anti-return valve (302), and the anti-return valve (302) prevents the sewage in the lower space (205) from flowing through it and entering the upper space (204).

3. The sewage tank (20) for the cleaning device (1) according to claim 2, characterized in that: The anti-return valve (302) comprises a joint (303) and a valve body that is deformable under pressure, wherein the joint (303) is mounted on the partition plate (203). The anti-return valve (302) is constructed so that sewage from the upper space (204) can open the valve body and flow into the lower space (205) for storage; the valve body can be closed by the pressure exerted on its outer surface by the sewage in the lower space (205), thereby preventing the sewage in the lower space (205) from flowing through it and entering the upper space (204); Alternatively, the anti-return valve (302) is an elastic valve plate (309), the elastic valve plate (309) being configured to allow sewage in the upper space (204) to flow through the first hole group (301) and flow into the lower space (205) for storage, and being configured to close the first hole group (301) to prevent sewage in the lower space (205) from flowing through the first hole group (301) and entering the upper space (204); the elastic valve plate (309) is pivotably arranged below the partition plate (203).

4. The sewage tank (20) for the cleaning device (1) according to claim 3, characterized in that: The valve body is a flexible flat-mouth valve body (304). When the cleaning device (1) is used upright, the pressure of the sewage in the upper space (204) acts on the flat-mouth valve body (304) and expands the flat-mouth valve body (304), and the sewage flows into the lower space (205) for storage. When the cleaning device (1) is used flat, the pressure of the sewage in the lower space (205) acts on the outer surface of the flat-mouth valve body (304) and closes the flat-mouth valve body (304).

5. The dirty water tank (20) for a cleaning device (1) according to any one of claims 2 to 4, characterized in that: A second hole group (210) is also formed on the partition plate (203), and the second hole group (210) deviates from the first hole group (301) in the circumferential direction of the partition plate (203). The second hole group (210) freely connects the upper space (204) and the lower space (205).

6. The sewage tank (20) for the cleaning device (1) according to claim 5, characterized in that: The first hole group (301) is radially opposite to the second hole group (210).

7. The sewage tank (20) for the cleaning device (1) according to claim 5, characterized in that: The partition plate (203) is a curved plate protruding toward the lower space (205), and the first hole group (301) and / or the second hole group (210) deviate from the lowest point of the partition plate (203).

8. The sewage tank (20) for a cleaning device (1) according to claim 1, characterized in that: A retaining wall (211) is vertically arranged along the circumference of the partition plate (203), and the retaining wall (211) extends into the upper space (204).

9. The sewage tank (20) for a cleaning device (1) according to claim 1, characterized in that: A handle is configured on the partition plate, and the handle extends toward the opening of the box body (201).

10. The sewage tank (20) for the cleaning device (1) according to claim 5, characterized in that: An assembly hole (214) is also provided on the partition plate (203), and the assembly hole (214) deviates from the first hole group (301) and the second hole group (210). The sewage channel (202) is configured as a sewage pipe, which extends upward from the lower space (205) through the assembly hole (214) to reach the upper space (204).

11. The sewage tank (20) for a cleaning device (1) according to claim 10, characterized in that: An annular baffle (215) is provided along the assembly hole (214), and the annular baffle (215) extends into the upper space (204).

12. The sewage tank (20) for a cleaning device (1) according to claim 10, characterized in that: A cover body (216) is provided at the opening at the top of the box body (201), and a transfer tube (217) is provided inside the box body (201); the cover body (216) is in contact with the transfer tube (217); the inlet (223) of the transfer tube (217) is aligned with the sewage outlet (224) of the sewage pipe; and the outlet of the transfer tube (217) is offset from the cover body (216).

13. The sewage tank (20) for a cleaning device (1) according to claim 12, characterized in that: The transfer pipe (217) and the sewage pipe are of an integrated structure or a split structure.

14. The sewage tank (20) for a cleaning device (1) according to claim 10, characterized in that: A cover body (216) is provided at the opening at the top of the box body (201), a transfer tube (217) is provided inside the box body (201), an inlet (223) of the transfer tube (217) is aligned with a sewage outlet (224) of the sewage pipe, the outlet of the transfer tube (217) deviates from the cover body (216), the transfer tube (217) and the sewage pipe are an integrated structure, the cover body (216) is directly connected to the partition plate (203), a gas outflow channel (218) is provided on the cover body (216), an inlet (219) of the gas outflow channel (218) is in communication with the upper space (204) and deviates from the outlet of the transfer tube (217) in the circumferential direction, and a filter is provided at the outlet of the gas outflow channel (218).

15. The sewage tank (20) for a cleaning device (1) according to claim 14, characterized in that: A water level probe group (40) is provided on the cover body (216), and the water level probe group (40) extends toward the lower space (205).

16. The sewage tank (20) for a cleaning device (1) according to claim 15, characterized in that: The water level probe set (40) comprises a first probe set (401) and a second probe set (402) extending toward the lower space (205). The second probe group (402) extends into the upper space (204) and is located directly above the first hole group (301), and the extension length of the first probe group (401) is greater than the extension length of the second probe group (402).

17. The sewage tank (20) for a cleaning device (1) according to claim 16, characterized in that: The first probe group (401) extends into the lower space (205).

18. The sewage tank (20) for a cleaning device (1) according to claim 14, characterized in that: The cover (216) is also configured with a pair of baffles (403) extending into the upper space (204) and spaced apart in the circumferential direction, and a partial area of ​​a side edge (405) of each baffle (403) is spaced apart from a side wall of the box (201). The sewage outlet (224) of the sewage pipe is located between the baffles (403).

19. The sewage tank (20) for a cleaning device (1) according to claim 18, characterized in that: The cover body (216) is also provided with a back plate (404), which is located on the radially opposite side of the sewage outlet (224) of the sewage pipe and has two ends respectively connected to the corresponding baffle plates (403).

20. The sewage tank (20) for a cleaning device (1) according to claim 19, characterized in that: The extension length of the back plate (404) is smaller than the extension length of the baffle (403).

21. A cleaning device (1), characterized in that: The invention comprises a shaft (10), a cleaning member (11) is mounted on the first end of the shaft (10), a handle (12) is configured on the second end of the shaft (10), and a liquid treatment component (13) is mounted on the shaft (10), wherein the liquid treatment component (13) comprises a sewage tank (20) for a cleaning device (1) according to any one of claims 1 to 20.

22. The cleaning device (1) according to claim 21, characterized in that A mounting area (250) configured to cooperate with the shaft (10) is formed on the circumferential outer surface of the box body (201). The sewage tank (20) is arranged on the rear side of the rod body (10), and the backflow prevention structure (30) is radially away from the installation area (250); Alternatively, the sewage tank (20) is arranged on the front side of the shaft (10), and the backflow prevention structure (30) is close to the installation area (250) in the radial direction.

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