A cleaning device

Abstract

The present invention provides a cleaning device, including a cleaning head, which includes a shell and a roller, a garbage box, and a sewage tank installed on the shell. The shell is also provided with a shovel bar, a water sealing member, a first water pressure plate, and a second water pressure plate; the shovel bar has an arc-shaped working surface, one end of which contacts the ground when working, and the other end is connected to the garbage box, and a garbage channel is formed between the arc-shaped working surface and the outer circumferential surface of the roller; the water sealing member, the first water pressure plate, and the second water pressure plate interfere with the roller respectively, the water sealing member, the first water pressure plate, and the roller jointly form a first water trough, the first water pressure plate, the second water pressure plate, and the roller jointly form a second water trough, and the shell is provided with a first water trough outlet and a second water trough outlet, and the first water trough outlet and the second water trough outlet are connected to the sewage tank. Through the setting of two-stage water troughs and two squeezing, the roller of the present invention can be cleaned very cleanly during the mopping and sweeping process, and the floor cleaning efficiency is higher.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of cleaning equipment, and in particular, relates to a cleaning device. Background Art

[0002] With the development of modern technology, there are many cleaning tools, including brooms, mops, floor wipes and vacuum cleaners, etc. Vacuum cleaners are very common floor cleaning tools, but they are very noisy, making people very uncomfortable, and their way of cleaning garbage is just to suck the garbage into a garbage box.

[0003] Brooms, mops, and floor wipes are sweeping cleaning tools, which generally have a fixed cleaning part. Their cleaning ability is determined by the dirt removal and dirt absorption ability of the cleaning part. Since the cleaning part is contaminated once it comes into contact with the dirty ground, the cleaning ability is gradually weakened in the subsequent cleaning process, especially when cleaning a large area continuously, it is impossible to clean thoroughly. Therefore, these cleaning products must be rinsed frequently, which is very troublesome.

[0004] For Chinese consumers, sweeping and mopping are both necessary for cleaning the floor. Sweeping or mopping alone cannot achieve a thorough cleaning of the floor. However, existing sweeping and mopping machines either require constant washing or have a complex structure and are very expensive, which makes ordinary consumers reluctant to buy them.

[0005] Moreover, existing floor cleaning tools can only clean dry garbage (brooms or vacuum cleaners, etc.) or can only be used to clean liquid garbage (mops, floor wipes, etc.). For mixed dry and wet garbage, especially sticky garbage (such as syrup, ketchup, etc.), the cleaning effect is either very poor or very laborious (for example, using a rag, which requires multiple washings), which can be said to be helpless. Summary of the invention

[0006] The present invention aims to provide a cleaning device which can squeeze a drum twice, so that the water absorbed by the drum can be squeezed out to the maximum extent, thereby improving the cleanliness of the drum.

[0007] The cleaning device provided by the present invention comprises a cleaning head, the cleaning head comprises a shell and a roller, a garbage box, and a sewage tank mounted on the shell, and the shell is also provided with a shovel bar, a water sealing member, a first water pressure plate, and a second water pressure plate;

[0008] The shovel bar has an arc-shaped working surface, one end of which contacts the ground when working, and the other end is connected to the garbage box, and a garbage channel is formed between the arc-shaped working surface and the outer circumferential surface of the drum; the water sealing component, the first water pressure plate, and the second water pressure plate interfere with the drum respectively, and the water sealing component, the first water pressure plate, and the drum together form a first water trough, and the first water pressure plate, the second water pressure plate, and the drum together form a second water trough, and the shell is provided with a first water trough outlet and a second water trough outlet, and the first water trough outlet and the second water trough outlet are connected to the sewage tank.

[0009] In some embodiments of the present invention, the shell includes a water tank upper cover, and the first water pressure plate is integrally formed with the upper cover or the first water pressure plate is installed on the water tank upper cover.

[0010] In some embodiments of the present invention, the second water pressure plate is integrally formed with the side wall of the shell or the second water pressure plate is installed on the side wall of the shell.

[0011] In some embodiments of the present invention, the cleaning device further includes a handheld portion, the handheld portion includes a clean water tank, the shell is further provided with a clean water inlet, the clean water inlet is connected to the clean water tank, and the clean water inlet is located above the second water tank.

[0012] In some embodiments of the present invention, an ozone generator is further provided in the handheld portion, and the ozone generator is connected to the clean water tank.

[0013] In some embodiments of the present invention, a filter assembly is provided in the sewage tank, and the shell is further provided with a purified water inlet, the sewage tank is connected to the purified water inlet, and the purified water inlet is located above the first water tank.

[0014] In some embodiments of the present invention, the filter assembly includes a filter screen and a filter box, and the filter box is filled with filter cotton.

[0015] In some embodiments of the present invention, the sewage tank is detachably mounted on the housing.

[0016] In some embodiments of the present invention, both the water inlet and the water outlet of the sewage tank are provided with a one-way valve.

[0017] In some embodiments of the present invention, the side wall of the shell is provided with an inclined sewage channel, and the sewage in the first water trough and the second water trough flows from the sewage channel into the sewage tank by self-weight and water pressure.

[0018] The present invention is provided with two water pressure plates. Through the two-stage water tank and two-time squeezing, the drum of the present invention can be cleaned very cleanly during the mopping and sweeping process, and it is no longer necessary to frequently use a special cleaning program for cleaning. Since the drum is cleaned very cleanly, the cleaning efficiency of the floor is better.

[0019] In addition, by providing the clean water inlet and the purified water inlet, small garbage or hair on the surface of the drum can be successfully washed away without providing a brush.

[0020] The cleaning device of the present invention is also equipped with an ozone generator, which can disinfect and sterilize the clean water tank. In addition, since the water contains ozone, it can also disinfect and sterilize the ground.

[0021] The present invention utilizes the "water-dust circulation" cleaning technology to achieve self-cleaning of the drum, and combines sweeping, mopping, washing and twisting together, which greatly facilitates users and can achieve very good cleaning effects.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a longitudinal cross-sectional view of a cleaning device in an embodiment of the present invention.

[0024] Figure 2 It is a schematic structural diagram of a water tank cover of a cleaning device in an embodiment of the present invention.

[0025] Figure 3 It is a schematic structural diagram of another cleaning device in an embodiment of the present invention.

[0026] Figure 4 This is a schematic structural diagram of a cleaning head in an embodiment of the present invention, showing a water pipe on the side wall.

[0027] Figure 5 It is a longitudinal cross-sectional view of a sewage tank in an embodiment of the present invention.

[0028] Figure 6 for Figure 5 Exploded view of the wastewater tank shown.

[0029] Figure 7 for Figure 5 The structural schematic diagram of the sewage tank shown shows the internal structure of the sewage tank. DETAILED DESCRIPTION

[0030] In the present invention, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected 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 the present invention can be understood according to specific circumstances.

[0033] In the present invention, 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 means 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 above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] The disclosure of the present invention provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described in the present invention. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0035] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0036] The present invention relates to a cleaning tool, which can be used for cleaning the floor, in particular a small smooth and flat floor, such as a home and kitchen floor. The cleaning tool of the present invention is particularly suitable for cleaning mixed garbage containing dry garbage, wet garbage and viscous materials such as noodles, porridge, ketchup and the like.

[0037] The dry garbage mentioned in the present invention specifically refers to granular garbage, such as fruit peels, melon seed shells, rice grains, paper pieces, etc.

[0038] Wet garbage refers to liquid garbage, such as water, beverages, etc.

[0039] Sticky garbage (or sticky garbage) includes soup, stew, porridge, ketchup, chocolate sauce and other garbage with a certain viscosity.

[0040] Other garbage also includes dust, ground marks, etc., which are also cleaning objects of the present invention.

[0041] Figure 1 The figure shows a cleaning device provided by the present invention, which includes a cleaning head 100. The cleaning head 100 includes a housing 110, a drum 120, a garbage box 130, and a sewage tank 140. Optionally, the drum 120, the garbage box 130, and the sewage tank 140 are detachably mounted on the housing 110.

[0042] Figure 1 In the illustrated embodiment, a shovel bar 111 and a water sealing member 112 are provided on the housing 110, wherein the shovel bar 111 has an arc-shaped working surface, one end of which contacts the ground during operation, and the other end is connected to the garbage box 130. A garbage channel is formed between the arc-shaped working surface and the outer circumferential surface of the drum 120, and the garbage cleaned by the drum 120 enters the garbage box 130 through the channel.

[0043] In addition, the housing 110 is provided with a first water pressure plate 113 and a second water pressure plate 114. The water sealing member 112, the first water pressure plate 113, and the second water pressure plate 114 interfere with the drum (i.e., squeeze the drum). The water sealing member 112, the first water pressure plate 113, and the drum 120 together form a first water tank A, and the first water pressure plate 113, the second water pressure plate 114, and the drum 120 together form a second water tank B.

[0044] Above the sink, the housing 110 is provided with a sink cover 115 , which is convenient for cleaning the sink. Figure 2 A water tank cover 115 of the present invention is shown. Figure 2 In the illustrated embodiment, the first water pressure plate 113 is integrally formed with the water tank cover 115. In other embodiments of the present invention, the first water pressure plate may also be a separate component, which is mounted on the water tank cover by snap-fitting or other methods. The water tank cover 115 is also provided with a clean water inlet 115a, which is connected to the clean water tank. In this embodiment, the clean water inlet 115a is located above the second water tank B, and clean water enters the second water tank B from the clean water inlet 115a, thereby rinsing the drum 120. In other embodiments of the present invention, the clean water inlet 115a may also be arranged above the first water tank A, and of course, it may also be arranged above the first water tank A and the second water tank B at the same time. Optionally, in other embodiments of the present invention, the water tank cover 115 may be set to be transparent, so that it is convenient for the user to observe the condition of the water tank, thereby cleaning the water tank in time.

[0045] In addition, the second water pressure plate 114 may also be designed to be integrally formed with the side wall of the housing 110. Of course, the second water pressure plate 114 may also be a separate component, which is mounted on the side wall of the housing 110 by snap connection or other methods.

[0046] Corresponding to the first water tank A and the second water tank B, the housing 110 is further provided with a first water tank outlet (not shown in the figure) and a second water tank outlet (not shown in the figure). The first water tank outlet and the second water tank outlet are connected to the sewage tank 140. Optionally, the side wall of the housing 110 is provided with an inclined sewage channel (not shown in the figure), and the sewage in the first water tank and the second water tank flows from the sewage channel into the sewage tank 140 by self-weight and water pressure. The sewage channel can be provided with a sewage channel cover to facilitate users to clean the sewage channel.

[0047] The roller 120 includes an inner layer of hard rubber and a sponge layer wrapped outside the hard rubber. The end of the hard rubber can be fixed to the housing 110 through a connecting piece such as a bearing. The roller driving mechanism drives the hard rubber to rotate around its axis through the roller transmission mechanism, driving the roller to rotate, so that the surface of the roller makes a circular motion.

[0048] The garbage box 130 and the sewage tank 140 may be designed to be detachable, that is, the garbage box 130 and the sewage tank 140 may be detachably mounted on the housing 110 .

[0049] The present invention is provided with two-stage water tanks, and the drum 120 is subjected to relatively large interference at the first water pressure plate 113, and the sewage in the drum 120 is squeezed out. The drum 120 continues to rotate, and the clean water inlet 115a sprays clean water to clean the drum 120. The drum 120 rotates to the second water pressure plate 114 and is subjected to relatively large interference again, and the drum 120 is cleaned for the second time, and the sewage in the first water tank A and the second water tank B flows into the sewage tank 140. Through the setting of two-stage water tanks and two squeezing, the drum of the present invention can be cleaned very cleanly during the mopping process, and it is no longer necessary to frequently use a special cleaning procedure for cleaning.

[0050] Figure 3 Another embodiment of the present invention is shown, and the cleaning device also includes a handheld part 200. The handheld part 200 includes a clean water tank, and the clean water tank includes a clean water tank body 211 and a clean water tank box body 212. Among them, the clean water tank box body 212 is detachably mounted on the clean water tank body 211. An ozone generator (not shown in the figure) is installed at the lower end of the clean water tank body 211, and a clean water outlet 212b and an ozone inlet 212c are provided at the bottom end of the clean water tank box body 212. When the clean water tank box body 212 is installed on the clean water tank body 211, the ozone prepared by the ozone generator enters the clean water in the clean water tank box body 212 through the ozone inlet 212c. The clean water flowing out of the clean water tank contains ozone, which can disinfect and sterilize the drum 120 to prevent the drum from getting moldy and smelly. In addition, since the water contains ozone, the ground can also be disinfected and sterilized after the drum 120 is used to mop and sweep the ground.

[0051] Figure 3 In the illustrated embodiment, a water tank cover 212a is further provided on the clean water tank body 212, and a user can add clean water into the clean water tank body 212 through the cover.

[0052] The clean water tank is connected to the clean water inlet 115a. The water pump can be a water pump with adjustable water speed, so as to adjust the speed of spraying water onto the drum 120.

[0053] The housing 110 and the handheld part 200 may be connected via a hinge, or alternatively, may be connected via other means, which is not limited in the present invention.

[0054] Figure 4Another cleaning head of the present invention is shown, which has a sewage pipe 116a and a clean water pipe 116b on the side wall of the housing 110. Among them, the sewage pipe 116a is connected to the sewage tank 140 and the purified water inlet, respectively, and the clean water pipe 116b is connected to the clean water tank and the clean water inlet 115a, respectively. Optionally, at this time, the clean water inlet 115a is arranged above the second water tank B, and the purified water inlet is arranged above the first water tank A. The sewage tank 140 in this embodiment has a filtering function, which can filter solid impurities (garbage, sand, etc.) in the sewage. The purified water obtained after filtration can be directly sucked into the first water tank A to rinse the drum 120. The recycling of water can greatly save the amount of clean water and avoid the trouble of users frequently adding clean water.

[0055] The clean water inlet 115a is arranged above the second water tank B, and the purified water inlet is arranged above the first water tank A. At this time, the water in the first water tank A is filtered sewage, which can wash out hair and other stuck garbage and squeeze out the sewage at the same time; the drum passing through the second water tank B is in an unsaturated state, and the clean water with ozone is absorbed into the inside, sterilizing and precipitating the internal garbage, which is carried away by the water flow, and the drum is deeply cleaned.

[0056] Figure 5 to Figure 7 The figure shows a sewage tank 140 of the present invention that can be detachably mounted on a housing 110. The sewage tank 140 is provided with a filter screen 141, a filter box 142, a water inlet check valve 143, a water outlet check valve 144, a sewage tank lock tongue 145, a sewage tank button 146 and a sewage tank cover 147. The filter screen 141 can be a steel mesh, a nylon mesh, etc., preferably a steel mesh. In this embodiment, there are two filter boxes 142, wherein the filter box body 142a is equipped with filter cotton 142b (such as Figure 6 As shown). The filter box 142 may also contain other filter materials as long as they can achieve the effect of filtering sewage. The sewage from the drum 120 is filtered through two filter boxes 142 and a filter net 141, most of the garbage in the sewage is filtered out, and the color of the sewage is lightened. The treated purified water is returned to the first water tank A again through the water pump for recycling.

[0057] The water inlet check valve 143 and the water outlet check valve 144 can ensure that when the sewage tank 140 is removed from the housing 110, sewage will not flow out of the sewage tank 140. Through the sewage tank lock tongue 145 and the sewage tank button 146, the user can easily remove the sewage tank 140 from the housing 110. In this embodiment, the sewage tank 140 is also provided with a sewage tank cover 147 to facilitate the user to replace the filter cotton 142b and clean the garbage in the sewage tank 140.

[0058] When the cleaning device of the present invention is used to clean dry garbage on the ground, when the drum 120 rolls over the ground, the dry garbage particles on the ground compress and deform the sponge layer of the drum 120, and the sponge layer wraps the dry garbage particles through deformation, so that the dry garbage particles are separated from the ground and rotate with the drum 120. When the drum 120 reaches the position of the shovel bar 111, the dry garbage particles leave the ground, are squeezed by the shovel bar 111, and continue to rotate with the drum 120. When the drum 120 passes the shovel bar 111 and reaches the entrance of the garbage box 230, the sponge layer recovers and deforms due to the loss of the pressure of the shovel bar 111, and the dry garbage particles wrapped by the sponge layer are released, and the garbage enters the garbage box 230 under the action of its own weight and elastic force.

[0059] Some small particles of dry garbage may not be able to be bounced into the garbage box 130 by the elastic deformation of the sponge layer, and they will be transferred to the first water tank A as the drum 120 rotates. In the first water tank A, the flow rate of purified water is large, so these small particles of garbage can be washed away, and the first water pressure plate 113 interferes with the drum 120, where the garbage can also be scraped off. The garbage removed from the first water pressure plate 113 flows into the sewage tank 140 with the water flow.

[0060] When the cleaning device of the present invention is used to clean wet garbage, the sponge layer of the drum 120 absorbs the wet garbage. The wet garbage moves with the drum 120 to the first water tank A, the purified water will flush the drum 120 for the first time, and the first water pressure plate 113 squeezes the sponge layer of the drum 120, the wet garbage is released from the sponge layer, and enters the sewage tank 140 with the water flow. Then the drum 120 continues to rotate and enters the second water tank B, the clean water inlet 115a sprays clean water to clean the drum 120, and the drum 120 rotates to the second water pressure plate 114 and is squeezed again, the drum 120 is cleaned for the second time, and the wet garbage enters the sewage tank 140 with the water flow.

[0061] When the cleaning device of the present invention is used to clean sticky garbage, the sticky garbage adheres to the sponge layer of the drum 120 and partially penetrates into the sponge layer of the drum 120. The drum 120 continues to rotate and reaches the first water tank A. The purified water flushes the sticky garbage, and the first water pressure plate 113 can scrape off the sticky garbage adhered to the surface of the drum 120. Under the joint action of the water flow and the first water pressure plate 113, the sticky garbage is removed from the surface of the drum 120, and the sticky garbage that penetrates into the sponge layer is released, and enters the sewage tank 140 along with the sewage. If there is still a part that has not been scraped off, the clean water sprayed out at the clean water inlet 115a will form a flushing force on the surface of the drum 120, and the second water pressure plate 114 can also further scrape off the sticky garbage adhered to the surface of the drum 120. Under the joint action of the water flow and the second water pressure plate 114, the sticky garbage that penetrates into the sponge layer is released, and the sticky garbage that adheres to the sponge layer is also removed, and enters the sewage tank 140 along with the water flow.

[0062] The sewage entering the sewage tank 140 is filtered by the filter box and the filter net, and returns to the first water tank A, and is used together with the clean water sprayed from the clean water inlet 115a to clean the drum 120.

[0063] Since two-stage water tanks are provided, and the sewage tank purifies the sewage and then reuses it in the first water tank, the cleaning device of the present invention has a very good cleaning effect on hair and flocculent garbage. When cleaning hair and flocculent garbage, they adhere to the sponge layer of the drum 120. The drum 120 continues to rotate and reaches the first water tank A. The purified water obtained after filtration from the sewage tank 140 flows into the first water tank A. At this time, the flow rate of the purified water can be set at 200-500ml / min. Under such a large water flow, the hair and flocculent garbage can be washed off the surface of the drum 120, and the first water pressure plate 113 can also scrape off the hair and flocculent garbage adhering to the surface of the drum 120. Under the combined action of the sewage with a large water flow and the first water pressure plate 113, the hair and flocculent garbage can be smoothly removed from the surface of the drum 120. The hair and flocculent garbage enter the sewage tank 140 with the water flow, and the sewage tank 140 can be removed for cleaning. The clean water inlet 115 a sprays clean water, and the second water pressing plate 114 presses the surface of the drum 120 . Under the combined action of the clean water and the second water pressing plate 114 , the drum 120 is cleaned, and the sewage enters the sewage tank 140 .

[0064] The sewage entering the sewage tank 140 is filtered by the filter box and the filter net and returns to the first water tank A.

[0065] The present invention utilizes the "water-dust circulation" cleaning technology to achieve self-cleaning of the drum, and combines sweeping, mopping, washing and twisting together, which greatly facilitates users and can achieve very good cleaning effects.

[0066] Obviously, the above embodiments are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A cleaning device, characterized in that: It includes a cleaning head, which includes a shell and a roller, a garbage box, and a sewage tank installed on the shell. The shell is also provided with a shovel bar, a water sealing member, a first water pressure plate, and a second water pressure plate; The shovel bar has an arc-shaped working surface, one end of which contacts the ground when working, and the other end is connected to the garbage box, and a garbage channel is formed between the arc-shaped working surface and the outer circumferential surface of the drum; the water sealing component, the first water pressure plate, and the second water pressure plate interfere with the drum respectively, and the water sealing component, the first water pressure plate, and the drum together form a first water trough, and the first water pressure plate, the second water pressure plate, and the drum together form a second water trough, and the shell is provided with a first water trough outlet and a second water trough outlet, and the first water trough outlet and the second water trough outlet are connected to the sewage tank.

2. The cleaning device according to claim 1, characterized in that The housing comprises a water tank upper cover, and the first water pressure plate is integrally formed with the water tank upper cover or the first water pressure plate is installed on the water tank upper cover.

3. The cleaning device according to claim 1, characterized in that: The second water pressure plate is integrally formed with the side wall of the shell or the second water pressure plate is installed on the side wall of the shell.

4. The cleaning device according to claim 1, characterized in that It also includes a handheld part, which includes a clean water tank. The shell is also provided with a clean water inlet, which is connected to the clean water tank and is located above the second water tank.

5. The cleaning device according to claim 4, characterized in that: An ozone generator is also arranged in the handheld part, and the ozone generator is connected to the clean water tank.

6. The cleaning device according to claim 1, characterized in that: A filter assembly is arranged in the sewage tank, and a purified water inlet is also arranged in the shell. The sewage tank is connected to the purified water inlet, and the purified water inlet is located above the first water tank.

7. The cleaning device according to claim 6, characterized in that: The filter assembly comprises a filter screen and a filter box, and the filter box is filled with filter cotton.

8. The cleaning device according to claim 6, characterized in that The sewage tank is detachably mounted on the housing.

9. The cleaning device according to claim 8, characterized in that: The water inlet and the water outlet of the sewage tank are both provided with a one-way valve.

10. The cleaning device according to claim 1, characterized in that The side wall of the shell is provided with an inclined sewage channel, and the sewage in the first water tank and the second water tank flows from the sewage channel into the sewage tank by self-weight and water pressure impact.

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