Cleaning device

Abstract

The invention discloses a cleaning device. The cleaning device comprises a rod body, a sweeping piece is installed at the first end of the rod body, a handle is constructed at the second end of the rod body, a liquid treatment assembly is installed on the rod body, and the liquid treatment assembly comprises a sewage tank; the sewage tank comprises a tank body, and a sewage channel communicated with the cleaning device is arranged on the tank body; a partition plate and an anti-backflow structure are arranged in the box body, and the partition plate divides the inner space of the box body into an upper space and a lower space; at least a first part of the edge of the partition plate is in sealing contact with the side wall of the box body, and the anti-backflow structure is arranged below the partition plate; and a mounting area matched with the rod body is constructed on the circumferential outer surface of the box body. And an anti-backflow structure in the sewage tank can prevent sewage from entering the motor when the cleaning device is flatly placed for use, so that a user can conveniently use the cleaning device.

Description

[0001] This application is a divisional application of the invention patent application "Sewage tank for cleaning device and cleaning device" with the application date of July 19, 2021 and the application number of 202110813176.9. Technical Field

[0002] This application relates to the technical field of cleaning devices, and in particular to a cleaning device. Background Art

[0003] With the development of technology, floor scrubbers with the function of spraying water to clean the floor have been developed to more effectively clean the floor. The floor scrubber includes a clean water tank, a water spraying system communicated with the clean water tank, a recovery system, and a sewage tank communicated with the recovery system; the recovery system includes a motor arranged above the sewage tank. When using the floor scrubber, the water spraying system sprays water on the ground, and the recovery system sucks the sewage into the sewage tank.

[0004] However, when using the floor scrubber in the prior art, the body of the floor scrubber cannot be tilted greatly to clean positions such as under the bed, because the water in the sewage tank may enter the motor, resulting in the motor stopping rotating and even the floor scrubber being damaged. Summary of the Invention

[0005] This application provides 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 placed flat for use.

[0006] According to the cleaning device of the present application, it includes a rod body. A cleaning member is installed at the first end of the rod body, a handle is constructed at the second end of the rod body, and a liquid treatment assembly is installed on the rod body. The liquid treatment assembly includes a sewage tank; the sewage tank includes a box body, and a sewage channel communicated with the cleaning device is arranged on the box body; a partition plate and an anti-backflow structure are arranged in the box body. The partition plate divides the internal space of the box body into an upper space and a lower space; at least a first part of the edge of the partition plate is in sealed contact with the side wall of the box body, and the anti-backflow structure is arranged below the partition plate; an installation area cooperating with the rod body is constructed on the circumferential outer surface of the box body; the sewage tank is arranged at the rear side of the rod body, and the anti-backflow structure is radially away from the installation area; or, the sewage tank is arranged at the front side of the rod body, and the anti-backflow structure is radially close to the installation area.

[0007] In one embodiment, the anti-backflow structure includes an anti-backflow valve in the lower space.

[0008] In one embodiment, the anti-backflow valve is an elastic valve sheet. When the sewage tank is substantially upright, the elastic valve sheet is configured to allow the sewage in the upper space to flow into the lower space for storage; when the sewage tank is placed flat, the elastic valve sheet prevents the sewage in the lower space from entering the upper space.

[0009] In one embodiment, a second hole group is further formed on the partition board, and the second hole group freely penetrates the upper space and the lower space.

[0010] In one embodiment, assembly holes are further provided on the partition board, and the assembly holes are offset from the second hole group.

[0011] In one embodiment, an annular baffle is provided along the assembly hole, and the annular baffle extends into the upper space.

[0012] In one embodiment, when the sewage tank is placed upright, sewage flows from the sewage channel into the upper space, enters the lower space through the anti-backflow structure and is stored in the lower space; when the sewage tank is placed flat, the anti-backflow structure prevents the sewage in the lower space from flowing through it and entering the upper space.

[0013] In one embodiment, when the cleaning device is placed flat, the anti-backflow structure is closed and in a low position; the anti-backflow structure and the sealing contact together prevent the sewage in the lower space from entering the upper space.

[0014] In one embodiment, a cover body is provided at the opening at the top of the box body, the cover body is directly connected to the partition board, a gas outflow channel is provided on the cover body, the inlet of the gas outflow channel is communicated with the upper space, and a filter element is provided at the outlet of the gas outflow channel.

[0015] In one embodiment, a water level probe group is provided on the cover body, and the water level probe group extends towards the lower space.

[0016] In one embodiment, the water level probe group includes a first probe group extending towards the lower space, and the first probe group extends into the lower space.

[0017] In one embodiment, a pair of baffle plates extending into the upper space and spaced apart circumferentially are further formed on the cover body, and partial regions of the side edges of each baffle plate are spaced apart from the side wall of the box body.

[0018] In one embodiment, a back plate is further formed on the cover body, and both ends of the back plate are respectively connected to the corresponding baffle plates.

[0019] In one embodiment, the sewage channel extends upward from the lower space through the partition board to the upper space; an anti-backflow structure is formed on the partition board, and the sewage entering the upper space of the box body from the sewage channel can enter the lower space for storage at least via 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.

[0020] In one embodiment, the sewage channel is configured as a sewage pipe, and the sewage pipe and the box body are of an integral structure.

[0021] Advantages of the present application: The present application provides a sewage tank for a cleaning device and a cleaning device. A partition plate is provided in the sewage tank to divide the tank body into an upper space and a lower space, and an anti-backflow structure is provided on the partition plate. When the cleaning device is placed 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 rotating, and the cleaning device can still carry out the cleaning work normally. This greatly facilitates the user to use the cleaning device. Brief Description of the Drawings

[0022] Figure 1 is a schematic diagram of a cleaning device according to an embodiment of the present application.

[0023] Figure 2 is a cross-sectional view of a sewage tank according to an embodiment of the present application.

[0024] Figure 3 Schematically shows the tank body.

[0025] Figure 4 Schematically shows the partition plate.

[0026] Figure 5 is a schematic diagram of a check valve according to an embodiment of the present application.

[0027] Figure 6 Schematically shows the open state of the check valve.

[0028] Figure 7 Schematically shows the closed state of the check valve.

[0029] Figure 8 Schematically shows a cross-sectional view of another form of check valve.

[0030] Figure 9 Schematically shows the structure of the cover body.

[0031] Figure 10 Schematically shows the state of the partition plate installed in the tank body.

[0032] Figure 11 Schematically shows the state of the cleaning device placed flat for use.

[0033] Figure 12 Schematically shows a cleaning device according to another embodiment of the present application. Detailed Description of the Embodiments

[0034] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Additionally, it should be noted that for the sake of description, only the parts related to the present application rather than all the structures are shown in the drawings.

[0035] In the description of the present application, unless otherwise clearly defined and limited, the terms "connected", "connected to", "fixed", "pass through" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, which can be the communication inside two elements or the interaction relationship between two elements; it can be a physical pass through or a pass through in the spatial orientation. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature can include the direct contact between the first and second features, or can also include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0037] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0038] In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0039] In the embodiments of the present application, as Figure 1 shown, the direction of arrow A is "rear", and the direction opposite to arrow A is "front". As Figure 2 shown, the direction of arrow I is "up", and the direction opposite to arrow I is "down".

[0040] Figure 1 Schematically shows a cleaning device 1 according to an embodiment of the present application. As Figure 1As shown, the cleaning device 1 includes a rod body 10. A cleaning member 11 (e.g., a floor brush) is installed at the first end of the rod body 10, a handle 12 is configured at the second end of the rod body 10, and a liquid treatment assembly 13 is installed on the rod body 10. The liquid treatment assembly 13 may include a motor 14, a clean water tank (not shown in the figure), a sewage tank 20 (described in detail below), a water spraying system (not shown in the figure), a recovery system (not shown in the figure), etc. 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 elaborated here.

[0041] When using the cleaning device 1, the water spraying system sprays clean water from the clean water tank onto the ground to moisten the ground; the recovery system sucks the sewage into the sewage tank 20, thereby achieving the cleaning of the ground.

[0042] The sewage tank 20 will be described in detail below.

[0043] 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 sectional view. As Figure 2 and 3 shown, the sewage tank 20 includes a tank body 201, and a sewage channel 202 communicating with the cleaning device 1 is provided on the tank body 201. A partition plate 203 is provided inside the tank body 201, and the partition plate 203 divides the internal space of the tank 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. An anti-backflow structure 30 is configured on the partition plate 203, so that the sewage entering the upper space 204 of the tank body 201 through 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.

[0044] For the cleaning device 1 with a sewage tank 20, when the rod body 10 (or the sewage tank 20) is substantially upright (for example, when the angle relative to the horizontal plane is greater than or equal to 60 degrees and less than or equal to 90 degrees, hereinafter simply referred to as "upright"), the sewage will be sucked into the sewage passage 202, flow from the sewage passage 202 into the upper space 204, and then enter the lower space 205 through the anti-backflow structure 30 and be stored in the lower space 205. When the rod body 10 (or the sewage tank 20) is tilted significantly (for example, the angle relative to the horizontal plane is less than or equal to 30 degrees, and even about 2 degrees relative to the horizontal plane, hereinafter simply referred to as "laid 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 operate normally for cleaning. Thus, the cleaning device 1 with the sewage tank 20 can not only be used with the rod body 10 upright, but also be tilted significantly, or even laid flat, which greatly facilitates the use of the user.

[0045] Also as Figure 1 shown, the sewage tank 20 is arranged at the rear side of the rod body 10. In this case, as Figure 10 shown, an installation area 250 cooperating with the rod body 10 is constructed on the circumferential outer surface of the box body 201, and the anti-backflow structure 30 is radially away from the installation area 250. Looking at the overall cleaning device 1, the installation area 250 is located at the front side of the box body 201, while the anti-backflow structure 30 is inside the box body 201 and close to the rear side of the box body 201 (as Figure 1 shown). In this way, when the cleaning device 1 is laid flat (as Figure 10 and 11 shown), the anti-backflow structure 30 is closed and in a low position (for example, relative to the second hole group 210 described below), so it can prevent 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.

[0046] It should be understood that in other types of cleaning devices, the sewage tank 20 can also be arranged in front of the rod body 10 (as Figure 12 ), as long as the way of laying flat the cleaning device 1 is adapted to the setting position of the anti-backflow structure 30, which is well-known to those skilled in the art and will not be elaborated here. In addition, it should be noted that, as Figure 12 shown, the sewage tank 20 is arranged at the front side of the rod body 10, and the anti-backflow structure 30 is radially close to the installation area 250. Thus, when the cleaning device 1 is laid flat (as Figure 12 shown), the anti-backflow structure 30 is closed and in a low position (for example, relative to the second hole group 210 described below), so it can prevent 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.

[0047] In Figure 2 and 3 In the sewage tank 20 shown, at the dumping opening on the top of the tank body 201, a cover body 216 is provided, and a gas outflow channel 218 is provided on the cover body 216. The inlet 219 of the gas outflow channel 218 communicates with the upper space 204. The motor 14 is arranged to communicate with the outlet 221 of the gas outflow channel 218 to extract air from the inside of the tank body 201, thereby sucking the sewage into the tank 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 waste in the gas and prevent garbage blockage at the motor 14. The filter element can be, for example, a HEPA filter to improve the filtering effect.

[0048] 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 separates some of the solid waste carried by the gas, and the remaining solid waste is filtered out by the filter element. The cyclone separation structure 260 can be integrally formed with the cover body 216 to facilitate its cleaning. In addition, by providing the cyclone separation structure 260, the working load of the filter element is reduced, the frequency of maintenance or replacement of the filter element is reduced, and it is convenient for the user to use the cleaning device 1.

[0049] Figure 4 Schematically shows the structure of the partition plate 203. As Figure 4 shown, a first hole group 301 is formed on the partition plate 203. The anti-backflow structure 30 includes an anti-backflow valve 302 installed on the partition plate 203 corresponding to the first hole group 301. The anti-backflow 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 part of the edge of the partition plate 203 (for example, 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.

[0050] 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.

[0051] 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-mouth valve body 304 and closes the flat-mouth valve body 304, thus preventing the sewage in the lower space 205 from flowing out through the flat-mouth valve body 304. At this time, the water temporarily stored in the upper space 204 is concentrated at the partition plate 203, far from the inlet 219 of the gas outlet passage 218, and the amount of water is very small and will not be pumped out of the box body 201, thereby greatly reducing the probability of the motor 14 stalling or being damaged. It should also be understood that when the cleaning device 1 is placed flat for use, if there is no or only a small amount of sewage in the lower space 205 such that the check valve 302 is not closed, the inhaled 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 pumped out of the box body 201, so that the motor 14 will not stall or be damaged.

[0052] In another embodiment, the check valve 302 may also be an elastic valve sheet 309 disposed on the lower surface of the partition plate 203 corresponding to the first hole group 301 (as Figure 8 shown). When the cleaning device 1 is used upright, under the action of the pressure of the sewage in the upper space 204, the elastic valve sheet 309 is pushed open towards the lower space 205 (as shown by the dashed line in Figure 8 ), and the sewage flows into the lower space 205 for storage. When the cleaning device 1 is placed 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, which prevents the sewage in the lower space 205 from flowing out through the first hole group 301.

[0053] It should be understood that other types of check valves can also be used to replace the check valve 302 shown in Figure 5 , as long as they can achieve the same function as the check valve 302, which is well-known to those skilled in the art and will not be elaborated here.

[0054] In order to be able to conveniently remove the partition plate 203 from the box body 201, the partition plate 203 is detachably installed in the box body 201. In a specific embodiment (as shown in Figure 4 ), a handle 207 is formed on the partition plate 203, and the handle 207 extends towards the opening of the box body 201. In this way, when cleaning the sewage tank 20, the handle 207 can be lifted to conveniently lift the partition plate 203 out of the box body 201, and at the same time, the solid waste will also be taken out of the box body 201, realizing the separation of solid waste and sewage.

[0055] In another embodiment, the partition plate 203 can also be directly connected to the cover body 216. In this way, when the cover body 216 is removed, the partition plate 203 will be taken out at the same time. This can prevent the situation where the sewage and solid waste are mixed again because the partition plate 203 is forgotten to be removed when pouring the sewage.

[0056] In another embodiment, the partition plate 203 is an arc-shaped panel protruding towards the lower space 205, and the first hole group 301 is offset from the lowest point of the partition plate 203. With this structure, solid waste will concentrate 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.

[0057] Also as Figure 4 shown, a second hole group 210 is also formed on the partition plate 203, and the second hole group 210 freely communicates 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, which enables the sewage to flow out of the lower space 205 smoothly. It should be understood that part of the sewage can still flow into the lower space 205 from the second hole group 210. In addition, when the partition plate 203 is taken out of the box body 201, the second hole group 210 can also filter solid waste, which will not be elaborated here.

[0058] The second hole group 210 is offset from the first hole group 301 in the circumferential direction of the partition plate 203. In this way, when the cleaning device 1 is placed flat for use, the check 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 more 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.

[0059] It should be understood that in order to prevent sewage from flowing out of the lower space 205 when the cleaning device 1 is tilted for use, only the second hole group 210 can be formed on the partition plate 203 without setting the first hole group 301, as long as the cleaning device 1 is set to be tilted in a direction not facing the second hole group 210.

[0060] It should also be understood that in the case where the partition plate 203 is formed as an arc-shaped panel, the second hole group 210 is also offset 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 will be reduced, thus facilitating the user to use the cleaning device 1.

[0061] Also as Figure 4As shown, a retaining wall 211 is vertically provided along the circumference of the partition plate 203, and the retaining wall 211 extends at least into the upper space 204. When the partition plate 203 is lifted out of the box body 201, the retaining wall 211 can prevent solid waste from falling and then dropping back into the box body 201. In another embodiment, drainage holes can be formed in the retaining wall 211, so that not only can solid waste be prevented from falling, but also sewage can be discharged into the box body 201 as much as possible, improving the separation effect of solid waste and sewage. In a specific embodiment, a bracket 212 can be vertically provided along the circumference of the partition plate 203, and then a filter screen 213 is provided on the bracket 212, thereby forming the above-mentioned retaining wall 211 with drainage holes.

[0062] In addition, in the case where the retaining wall 211 is constructed, the handle 207 can be connected to the retaining wall 211 or integrally formed with the retaining wall 211, which will not be elaborated here.

[0063] Still as Figure 3 and 4 shown, an assembly hole 214 is also provided on the partition plate 203. The assembly hole 214 is offset 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 assembly 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 assembly hole 214 is in sealed 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 placed flat.

[0064] In an embodiment not shown, the sewage channel 202 can 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, and a dumping opening is formed on the top wall, and the cover body 216 covers the dumping opening; in this case, the sewage opening of the sewage channel 202 is formed on the top wall of the box body 201 and communicates with the upper space 204.

[0065] In one embodiment, as Figure 2 shown, the sewage pipe and the box body 201 are of an integral structure. For example, they can be integrally formed by injection molding, which is simple and convenient to manufacture. In another embodiment, the sewage pipe and the box body 201 can also be of a split structure, so that when needed, the sewage pipe can be detached from the box body 201 to thoroughly clean the sewage tank 202 and / or the box body 201. In the case where the sewage pipe and the box body 201 are of a split structure, the two can be connected by threads or sealed and clamped together.

[0066] 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. Thus, when the cleaning device 1 is tilted or laid flat, the partition plate 203 (together with the retaining wall 211) will not skew within 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 via the anti-backflow structure 30.

[0067] Also as Figure 3 shown, a connecting pipe 217 is provided within the box body 201, and the cover body 216 abuts against the connecting pipe 217. Under the pressing of the cover body 216, the connecting pipe 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 relatively high.

[0068] The inlet 223 of the connecting pipe 217 is aligned with the sewage outlet 224 of the sewage pipe, and the outlet 220 of the connecting pipe 217 deviates from the cover body 216. For example, the end of the connecting pipe 217 facing the cover body 216 is closed, and the outlet 220 is provided on the side wall of the connecting pipe 217. This can extend the movement path of the water-gas mixture within the box body 201 and improve the gas-liquid separation effect; in addition, it can also reduce the risk of water being pumped into the gas outflow channel 218 and then reaching the motor 14, thereby increasing the service life of the cleaning device 1. In another specific embodiment, the outlet 220 of the connecting pipe 217 is circumferentially offset from the inlet 219 of the gas outflow channel 218. For example, the outlet 220 of the connecting pipe 217 and the inlet 219 of the gas outflow channel 218 are radially opposite, and the height of the outlet 220 is lower than the height of the inlet 219, which maximally increases the distance between the outlet 220 and the inlet 219, extends the movement path of the water-gas mixture within the box body 201, and improves the gas-liquid separation effect.

[0069] In one embodiment, the connecting pipe 217 and the sewage pipe are of an integral structure, that is, the connecting pipe 217 is a part of the sewage pipe. In this case, the connecting pipe 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.

[0070] In other embodiments, the connecting pipe 217 and the sewage pipe are of a split structure, that is, the connecting pipe 217 can be manufactured separately and then assembled with the sewage pipe. In this way, the sewage pipe can be made into a straight pipe, and there is no need to consider the dimensional relationship between the connecting pipe 217 and the assembly hole 214, which simplifies the manufacture of the sewage pipe and the connecting pipe 217.

[0071] Also as Figure 9As shown, a water level probe group 40 is provided on the cover body 216, and the water level probe group 40 extends towards the lower space 205. The water level probe group 40 is used to monitor the sewage level in the water tank 201. When the water level in the water tank 201 reaches a preset threshold, the motor 14 will stop rotating and remind the user. In one embodiment, the water level probe group 40 uses a bipolar water level probe. In other embodiments, the water level probe group 40 can also use a unipolar water level probe, or other forms of water level probes. This is well-known to those skilled in the art and will not be elaborated here.

[0072] Figure 9 Schematically shows the water level probe group 40. As Figure 3 and 9 shown, the water level probe group 40 includes a first probe group 401 and a second probe group 402 that extend towards the lower space 205. The extension length of the first probe group 401 is greater than that 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 placed 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 described above, when the cleaning device 1 is placed flat, the anti-backflow structure 30 provided 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 rotating and the cleaning device 1 can still perform the 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 towards the cover body 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 to the motor 14 and causing damage to the motor 14. Thus, by setting the first probe group 401 and the second probe group 402, the water level in the box body 201 can be monitored in real time to prevent the sewage from being sucked into the motor 14 and causing damage to the motor 14. This greatly extends the service life of the cleaning device 1.

[0073] 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 level in the box body 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 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 extending into the lower space 205 according to the actual situation, which will not be elaborated here.

[0074] In another embodiment, the first probe group 401 can also be located 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 and prevent 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 the actual situation, which will not be elaborated here. In addition, those skilled in the art can also extend the first probe group 401 into the lower space 205, or into the upper space 204, or set the first probe group 401 in both the upper space 204 and the lower space 205 according to the actual situation, which will not be elaborated here.

[0075] In another embodiment, the second probe group 402 is located above the outlet 220 of the adapter pipe 217. This can prevent sewage from directly spraying onto the second probe group 402 and reduce the probability of misjudgment.

[0076] Also as Figure 2 and 9 shown, a pair of baffle plates 403 extending into the upper space 204 are further constructed on the cover body 216, and the pair of baffle plates 403 are spaced apart in the circumferential direction. At least part of the side edge 405 of each baffle plate 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 baffle plates 403. The baffle plates 403 can guide the sewage splashing onto them to flow downward, avoiding the sewage splashing around in the box body 201 and adversely affecting the use feeling of the cleaning device 1. In addition, the air sucked into the box body 201 from the sewage pipe needs to bypass the baffle plates 403 to reach the inlet 219 of the gas outflow channel 218 on the cover body 216, so that the movement path of the water-vapor mixture is more tortuous, extending the movement path of the water-vapor mixture in the box body 201 and improving the air-water separation effect. Also as Figure 9 shown, the second probe group 402 can also be located between a pair of baffle plates 403. This makes the structure of the cover body 216 more compact, facilitating the reduction of the radial dimension of the sewage tank 20, and thus the cleaning device 1 is more concise, flexible and convenient for cleaning narrow spaces.

[0077] In a specific embodiment, the upper region 406 of the side edge 405 of the baffle 403 is in contact with the side wall of the box body 201, and the lower region 407 is spaced apart from the side wall of the box body 201. 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 everywhere in the box body 201, but also force the water-gas mixture to flow downward and fold before it can cross the baffle 403, making the movement path of the water-gas mixture in the box body 201 longer and the water-gas separation effect better.

[0078] In addition, a back plate 404 is also constructed on the cover body 216. The backstop 404 is on the radially opposite side of the sewage outlet 224 of the sewage pipe and is connected to the corresponding baffle 403 at both ends. The inlet 219 of the gas outflow channel 218 is on the radially outer side of the back plate 404. With this structure, the water-gas mixture must flow downward and cross the back plate 404 before it can reach 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 body 201 and the water-gas 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 prevent the baffle 403 and the back plate 404 from overly blocking the path of the water-gas mixture, ensuring smooth air flow and a better user experience when using the cleaning device 1. Those skilled in the art can construct the extension length of the back plate 404 in the box body 201 according to the actual situation.

[0079] When the adapter pipe 217 and the sewage pipe are separate, a water baffle (not shown in the figure) can also be provided between the upper side of the outlet 220 of the adapter pipe 217 and the lower side of the second probe group 402. The water baffle is in contact with the side wall of the box body 201. In this way, the water baffle separates the second probe group 402 from the outlet 220 of the adapter pipe 217, thus more effectively preventing sewage from directly spraying onto the second probe group 402 and further reducing the probability of misjudgment.

[0080] Next, different usage scenarios of the cleaning device 1 will be described.

[0081] Scenario 1:

[0082] As Figure 1As shown, when the cleaning device 1 is used upright, the motor 14 rotates. After starting the water spraying system, clean water is sprayed from the clean water tank onto 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). The sewage flows into the lower space 205 through the first hole group 301 (and the anti-backflow valve 302) and the second hole group 210 on the partition plate 203 for storage. Solid garbage 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 level in the box body 201 reaches the threshold value, the motor 14 stops rotating and reminds the user.

[0083] Scenario 2:

[0084] As Figure 11 shown, when the cleaning device 1 is used horizontally, under the action of the anti-backflow structure 30 on the partition plate 203, the sewage in the lower space 205 is kept in the lower space 205. The motor 14 rotates. After starting the water spraying system, clean water is sprayed from the clean water tank onto the ground, and 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.

[0085] When the second probe group 402 detects that the sewage level temporarily stored in the upper space 204 reaches the threshold value, the motor 14 stops rotating and reminds the user.

[0086] When the cleaning device 1 is set upright, 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-backflow valve 302) and / or the second hole group 210.

[0087] Obviously, the above embodiments of the present application are only examples for clearly explaining the present application, and are not intended to limit the implementation manners of the present application. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A cleaning device, characterized in that, It includes a rod body (10), a cleaning member (11) is installed at the first end of the rod body (10), a handle (12) is constructed at the second end of the rod body (10), and a liquid treatment assembly (13) is installed on the rod body (10). The liquid treatment assembly (13) includes a sewage tank (20). The sewage tank (20) includes a box body (201), and a sewage channel (202) communicating with the cleaning device (1) is provided on the box body (201). A partition plate (203) and an anti-backflow structure (30) are provided inside the box body (201). The partition plate (203) divides the internal space of the box body (201) into an upper space (204) and a lower space (205). At least a first part (206) of the edge of the partition plate (203) is in sealed contact with the side wall of the box body (201), and the anti-backflow structure (30) is provided below the partition plate (203). An installation area (250) cooperating with the rod body (10) is constructed on the circumferential outer surface of the box body (201). The sewage tank (20) is arranged at the rear side of the rod body (10), and the anti-backflow structure (30) is radially away from the installation area (250); or, the sewage tank (20) is arranged at the front side of the rod body (10), and the anti-backflow structure (30) is radially close to the installation area (250).

2. The cleaning device according to claim 1, wherein The anti-backflow structure (30) includes an anti-backflow valve (302) in the lower space (205).

3. The cleaning device according to claim 2, wherein The anti-backflow valve (302) is an elastic valve sheet (309). When the sewage tank (20) is generally upright, the elastic valve sheet (309) is configured to allow the sewage in the upper space (204) to flow into the lower space (205) for storage. When the sewage tank (20) is laid flat, the elastic valve sheet (309) prevents the sewage in the lower space (205) from entering the upper space (204).

4. The cleaning device according to claim 2 or 3, characterized in that A second hole group (210) is also constructed on the partition plate (203). The second hole group (210) freely communicates the upper space (204) and the lower space (205).

5. The cleaning device according to claim 4, wherein An assembly hole (214) is also provided on the partition plate (203), and the assembly hole (214) is offset from the second hole group (210). Preferably, an annular baffle (215) is provided along the assembly hole (214), and the annular baffle (215) extends into the upper space (204).

6. The cleaning device according to claim 1, characterized in that, When the sewage tank (20) is upright, sewage flows from the sewage channel (202) into the upper space (204), enters the lower space (205) through the anti-backflow structure (30) and is stored in the lower space (205). When the sewage tank (20) is laid flat, the anti-backflow structure (30) prevents the sewage in the lower space (205) from flowing through it and entering the upper space (204).

7. The cleaning device according to claim 1, characterized in that, When the cleaning device (1) is laid flat, the anti-backflow structure (30) is closed and at a low position. The anti-backflow structure (30) and the sealing contact jointly prevent the sewage in the lower space (205) from entering the upper space (204).

8. The cleaning device according to claim 1, characterized in that, A cover body (216) is provided at the opening at the top of the box body (201). The cover body (216) is directly connected to the partition plate (203). A gas outflow channel (218) is provided on the cover body (216). The inlet (219) of the gas outflow channel (218) communicates with the upper space (204). A filter element is provided at the outlet of the gas outflow channel (218). Preferably, a water level probe group (40) is provided on the cover body (216), and the water level probe group (40) extends towards the lower space (205). Preferably, the water level probe group (40) includes a first probe group (401) extending towards the lower space (205), and the first probe group (401) extends into the lower space (205). Preferably, a pair of baffle plates (403) extending into the upper space (204) and spaced apart circumferentially are further constructed on the cover body (216). Partial regions of the side edges (405) of each baffle plate (403) are spaced apart from the side wall of the box body (201). Preferably, a back plate (404) is further constructed on the cover body (216), and both ends of the back plate (404) are respectively connected to the corresponding baffle plates (403).

9. The cleaning device according to claim 1, characterized in that, 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 constructed on the partition plate (203). The sewage entering the upper space (204) of the box body (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).

10. The cleaning device according to claim 1, characterized in that, The sewage channel (202) is constructed as a sewage pipe, and the sewage pipe and the box body (201) are of an integral structure.

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