Sewage tank, cleaning module, cleaning device, base station and cleaning system

Abstract

This application discloses a wastewater tank, a cleaning module, a cleaning device, a base station, and a cleaning system. The wastewater tank has a receiving cavity and connecting holes. The top of the wastewater tank has a channel and multiple outlets, which are spaced apart circumferentially around the tank. The channel has an inlet for external liquid to enter, and the outlets connect the channel and the receiving cavity. Liquid is sprayed from the outlets toward the inner wall of the wastewater tank in a direction away from the center of its cross-section. The connecting holes allow liquid and waste in the receiving cavity to drain. In this embodiment, when the wastewater tank needs cleaning, external liquid enters the channel and is sprayed from the outlets toward the inner wall of the wastewater tank in a direction away from the center of its cross-section. Waste inside the wastewater tank can be flushed out by the external liquid. Compared to existing wastewater tanks, this wastewater tank has a self-cleaning function, higher cleaning efficiency, and requires no manual cleaning, resulting in a better user experience.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and more specifically, to a sewage tank, a cleaning module, a cleaning equipment, a base station, and a cleaning system. Background Technology

[0002] After cleaning a surface, the mop of a cleaning robot will have wastewater on it. Continuing to clean the surface with this wastewater will result in poor cleaning effectiveness. Therefore, cleaning robots can be equipped with a wastewater tank to collect and recycle the wastewater from the mop, thereby improving the cleaning effect. However, currently, the wastewater tanks of cleaning robots typically require manual cleaning, which is inefficient. Utility Model Content

[0003] This application provides a wastewater tank, a cleaning module, a cleaning equipment, a base station, a cleaning system, and a cleaning method for the wastewater tank, which at least solves the problem that the wastewater tanks of current cleaning robots usually require manual cleaning, resulting in low cleaning efficiency.

[0004] In a first aspect, embodiments of this application provide a sewage tank, which has a receiving cavity and a connecting hole. The top of the sewage tank has a channel and a plurality of outlet holes, which are spaced apart along the circumference of the sewage tank. The channel has an inlet for allowing external fluid to enter the channel. The outlet holes spray liquid toward the inner wall of the sewage tank in a direction away from the center of the cross-section of the sewage tank. The connecting hole is used for discharging liquid and waste from the receiving cavity.

[0005] In some embodiments, the top of the sewage tank is provided with a water supply component, the inner cavity of which is the channel; along a direction away from the center of the cross-section of the sewage tank, the water supply component includes a first sidewall and a second sidewall facing away from each other, the second sidewall facing the center of the cross-section of the sewage tank, and the outlet is on the first sidewall.

[0006] In some embodiments, along the flow direction of the liquid in the channel, the outlet includes a first surface and a second surface, the second surface being further away from the inlet than the first surface, the second surface being an inclined surface, and the angle between the second surface and the flow direction of the liquid in the channel being an acute angle.

[0007] In some embodiments, the first surface is an inclined surface, the angle between the first surface and the flow direction of the liquid in the channel is an obtuse angle, and the outlet is a gradually expanding through-hole.

[0008] In some embodiments, the water supply component is a protruding structure extending from the top of the wastewater tank toward the receiving cavity.

[0009] In some embodiments, the water supply component is a closed annular structure.

[0010] In some embodiments, the water supply element is an at least partially open annular structure.

[0011] In some embodiments, the wastewater tank includes a tank body that encloses the receiving cavity; the water supply component extends from the inner wall of the tank body into the receiving cavity, the water supply component includes a first sub-part and a second sub-part, the first sub-part is connected to the inner wall of the tank body, the second sub-part is bent and connected to the first sub-part and spaced from the inner wall of the tank body, and the outlet is provided in the second sub-part.

[0012] In some embodiments, the wastewater tank includes a combined cover and a tank body, the cover and the tank body together forming the receiving cavity; the cover includes a first side and a second side facing away from each other, the first side of the cover facing the inside of the receiving cavity, the first side of the cover is provided with the water supply component, the water supply component being spaced apart from the inner sidewall of the tank body.

[0013] In some embodiments, the first side of the cover is further provided with a separator and a liquid inlet structure. The separator is connected to the inner wall of the cover to divide the first side of the cover into a first area and a second area. The water supply component is located in the first area. The first area and the box together form the receiving cavity. One end of the liquid inlet structure is located in the first area and communicates with the water supply component, and the other end is located in the second area and is provided with the inlet.

[0014] In some embodiments, the cover includes a first cover and a second cover, which are detachably connected and together form the channel.

[0015] In some embodiments, the extended shape of the channel includes an arc, a square arc, a C-shape, a U-shape, an L-shape, a semi-circle, an annular shape; and / or the length of the line segment connecting all the outlet holes is not less than half the circumference of the sewage tank.

[0016] In some embodiments, the wastewater tank is further provided with a first vent, which communicates with the receiving cavity and is used to allow gas to enter and exit the receiving cavity; when liquid is sprayed into the receiving cavity through the outlet, the first vent allows gas in the receiving cavity to exit.

[0017] In some embodiments, when the waste in the containment cavity is discharged outside the wastewater tank, the first vent is used to allow gas to enter the containment cavity.

[0018] In some embodiments, the wastewater tank is further provided with a second vent spaced apart from the first vent, the second vent communicating with the receiving cavity; when the waste in the receiving cavity is discharged outside the wastewater tank, the second vent is used to allow gas to enter the receiving cavity.

[0019] Secondly, embodiments of this application provide a cleaning module, the cleaning module including a body and a sewage tank as described in the above embodiments, the sewage tank being disposed on the body.

[0020] In some embodiments, the cleaning module further includes a first air pump disposed on the main body, and the wastewater tank is also provided with a first air hole, one end of which communicates with the receiving cavity and the other end of which is connected to the first air pump; when the receiving cavity stores waste, the first air pump is used to extract gas from the receiving cavity through the first air hole; when the stored waste is discharged from the receiving cavity and liquid is sprayed into the receiving cavity through the outlet, the first air pump is used to extract gas from the receiving cavity through the first air hole.

[0021] In some embodiments, when the waste in the containment cavity is discharged from the wastewater tank, the first air pump is used to pump air into the containment cavity through the first air hole.

[0022] In some embodiments, the wastewater tank is further provided with a second vent spaced apart from the first vent, the second vent communicating with the receiving cavity; when the waste in the receiving cavity is discharged from the wastewater tank, the first air pump is used to pump air into the receiving cavity through the second vent.

[0023] In some embodiments, the cleaning module further includes a second air pump, and the wastewater tank is also provided with a second air hole spaced apart from the first air hole. One end of the second air hole is connected to the receiving cavity, and the other end is connected to the second air pump. When the waste in the receiving cavity is discharged from the wastewater tank, the second air pump is used to pump air into the receiving cavity through the second air hole.

[0024] In some embodiments, the cleaning module further includes a wastewater tank, a drain component, and a connecting pipe. The wastewater tank is disposed on the main body and is used to collect waste. The drain component is connected to the wastewater tank and has a drain outlet that communicates with the wastewater tank. One end of the connecting pipe communicates with the wastewater container, and the other end communicates with the wastewater tank.

[0025] In some embodiments, the connecting pipe includes a connecting portion and a bending portion, the connecting portion being connected to the bending portion, one end of the bending portion being connected to the sewage tank, and one end of the connecting portion being connected to the sewage trough. In the height direction of the sewage tank, the highest point of the bending portion is higher than the connection point between the connecting pipe and the sewage tank.

[0026] In some embodiments, the cleaning module further includes a clean water tank disposed on the main body, the clean water tank being connected to the inlet and used to store cleaning liquid.

[0027] Thirdly, embodiments of this application also provide a cleaning device, the cleaning device including a body and

[0028] The cleaning module described in the above embodiments is disposed on the machine body.

[0029] In some embodiments, the cleaning device further includes a clean water tank disposed on the main body and / or the casing, the clean water tank being connected to the inlet and used to store cleaning liquid.

[0030] In some embodiments, the cleaning equipment includes a tracked cleaning robot or a roller cleaning robot.

[0031] Fourthly, embodiments of this application also provide a base station for maintaining the cleaning equipment described in the above embodiments.

[0032] Fifthly, embodiments of this application also provide a cleaning system, the cleaning system including cleaning equipment and a base station, the base station being used to maintain the cleaning equipment described in the above embodiments; the cleaning equipment includes a body and a cleaning module described in the above embodiments, the cleaning module being disposed on the body.

[0033] In some embodiments, the cleaning system further includes a clean water tank disposed at at least one of the main body, the fuselage, and the base station, the clean water tank being connected to the inlet and used to store cleaning liquid.

[0034] In some embodiments, the base station is equipped with a third air pump; when the waste in the containment cavity is discharged from the sewage tank, the third air pump is used to pump air into the containment cavity through the inlet or the second air hole.

[0035] Sixthly, embodiments of this application also provide a method for cleaning a sewage tank, the cleaning method being applied to the sewage tank described in the above embodiments, the cleaning method comprising: allowing a cleaning liquid to enter the channel from the inlet and spraying it onto the inner wall of the sewage tank from the outlet; the cleaning liquid flowing down the inner wall of the receiving cavity and being stored in the receiving cavity; soaking the receiving cavity in the cleaning liquid for a predetermined time; and discharging the waste in the receiving cavity to the outside of the sewage tank.

[0036] In some embodiments, the cleaning method for the wastewater tank further includes: closing the wastewater tank from the outside world, so that the cleaning liquid is stored in the containment cavity.

[0037] In some embodiments, discharging the waste in the containment cavity to the outside of the wastewater tank includes: opening the connection between the wastewater tank and the outside, so that the waste in the containment cavity can be discharged to the outside of the wastewater tank.

[0038] In some embodiments, the cleaning method for the wastewater tank further includes: using a first air pump to extract gas from the containment cavity, so that the cleaning liquid is stored in the containment cavity.

[0039] In some embodiments, the discharge of waste from the containment cavity to the outside of the wastewater tank includes: using a first air pump to pump air into the containment cavity, thereby discharging the waste from the containment cavity to the outside of the wastewater tank.

[0040] The wastewater tank, cleaning module, cleaning equipment, base station, cleaning system, and cleaning method of this application are based on a wastewater tank with a channel and multiple outlets at circumferential intervals on the top. When cleaning is required, external liquid enters the channel and is sprayed from the outlets toward the inner wall of the wastewater tank in a direction away from the center of its cross-section. This allows the external liquid to flush out contaminants from inside the tank. Compared to existing wastewater tanks, the wastewater tank of this application has a self-cleaning function, higher cleaning efficiency, and requires no manual cleaning, resulting in a better user experience.

[0041] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0042] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0043] Figure 1 This is a perspective view of a cleaning module according to certain embodiments of this application;

[0044] Figure 2 yes Figure 1 A three-dimensional exploded view of the cleaning module;

[0045] Figure 3 This is a perspective view of the cover of a sewage tank according to some embodiments of this application;

[0046] Figure 4 yes Figure 3 A three-dimensional schematic diagram of the cover from another perspective;

[0047] Figure 5 This is a structural schematic diagram showing the flow direction of liquid in the channels of the cover;

[0048] Figure 6 This is a schematic diagram of the structure of a sewage tank according to another embodiment of this application;

[0049] Figure 7 This is a perspective view of a cleaning device according to certain embodiments of this application;

[0050] Figure 8 This is a schematic diagram of the base station and cleaning system according to certain embodiments of this application;

[0051] Figure 9 This is a flowchart illustrating a method for cleaning a wastewater tank according to certain embodiments of this application;

[0052] Figure 10 This is a flowchart illustrating a method for cleaning a wastewater tank according to certain embodiments of this application;

[0053] Figure 11 This is a flowchart illustrating a method for cleaning a wastewater tank according to certain embodiments of this application;

[0054] Figure 12 This is a flowchart illustrating a method for cleaning a wastewater tank according to certain embodiments of this application;

[0055] Figure 13 This is a flowchart illustrating a method for cleaning a wastewater tank according to certain embodiments of this application;

[0056] Figure 14 This is a flowchart illustrating a method for cleaning a wastewater tank according to certain embodiments of this application;

[0057] Figure 15 This is a schematic flowchart of a method for cleaning a wastewater tank according to certain embodiments of this application.

[0058] Explanation of key component symbols:

[0059] 10000, Cleaning System; 3000, Base Station; 1000, Cleaning Equipment; 300, Body; 100, Cleaning Module; 30, Main Body; 50, First Air Pump; 60, Sewage Tank; 70, Sewage Discharge Component; 71, Sewage Outlet; 90, Connecting Pipe; 10, Sewage Tank; 11, Receiving Cavity; 12, Connecting Hole; 13, Channel; 131, Inlet; 14, First Air Hole; 15, Outlet; 16, Water Supply Component; 161, First Side Wall; 163, Second Side Wall; 165, First Sub-section; 167, Second Sub-section; 17, Housing; 19, Cover; 191, First Side; 1911, First Zone; 1913, Second Zone; 193, Second Side; 195, Separator; 197, Liquid Inlet Structure; 198, First Cover; 199, Second Cover. Detailed Implementation

[0060] The embodiments of this application are described in detail below. These embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0061] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0062] After cleaning a surface, the mop of a cleaning robot accumulates wastewater. Continuing to clean the surface with this wastewater results in poor cleaning efficiency. Therefore, a wastewater tank can be provided in the cleaning robot to collect and recycle the wastewater from the mop, thereby improving the cleaning effect. However, current wastewater tanks in cleaning robots typically require manual cleaning, leading to low efficiency. To address this issue, this application provides a wastewater tank 10 (… Figure 1 (as shown), Cleaning Module 100 ( Figure 1 (As shown), cleaning equipment 1000 ( Figure 7 As shown), base station 3000 ( Figure 8 (as shown), and cleaning system 10000 ( Figure 8 (as shown) and the cleaning method for the sewage tank.

[0063] Please see Figures 1 to 4In a first aspect, embodiments of this application provide a sewage tank 10, which has a receiving cavity 11 and a connecting hole 12. The top of the sewage tank 10 has a channel 13 and a plurality of outlet holes 15, which are spaced apart along the circumference of the sewage tank 10. The channel 13 has an inlet 131 for allowing external liquid to enter the channel 13. The outlet holes 15 connect the channel 13 and the receiving cavity 11, and spray liquid toward the inner wall of the sewage tank 10 in a direction away from the center of the cross-section of the sewage tank 10. The connecting hole 12 is used to discharge liquid and waste in the receiving cavity 11.

[0064] Specifically, please combine Figure 7 The cleaning device 1000 is a device for cleaning surfaces to be cleaned. The surface to be cleaned can be, but is not limited to, a floor, marble surface, or glass surface. This application uses a floor as an example for illustration. The cleaning device 1000 can be a robotic vacuum cleaner, a robotic mop, or a combined vacuum and mop robot. A robotic vacuum cleaner can be used to sweep the surface to be cleaned, a robotic mop can be used to wipe the surface to be cleaned, and a combined vacuum and mop robot can integrate the functions of both types of robots; that is, a robotic vacuum and mop robot can be used to sweep and wipe the surface to be cleaned. This application uses a combined vacuum and mop robot as an example for illustration of the cleaning device 1000.

[0065] In some embodiments, the cleaning device 1000 may include a tracked cleaning robot or a roller cleaning robot. When the cleaning device 1000 is a tracked cleaning robot, its mopping component is a tracked mopping component. When the cleaning device 1000 is a roller cleaning robot, its mopping component is a roller mopping component. Both tracked and roller mopping components can clean the surface to be cleaned by rotating. Compared to cleaning devices using traditional disc-type mopping components, because the tracked and roller mopping components are rolling, the contact area between the mopping component and the surface to be cleaned is large. Simultaneously, debris on the mopping component is continuously collected onto the cleaning device, keeping the mopping component relatively clean. Therefore, the cleaning device 1000 achieves better cleaning results for the surface to be cleaned. This application uses a tracked cleaning robot as an example for illustration.

[0066] The cleaning device 1000 includes a cleaning module 100, which is used to clean surfaces to be cleaned. A mop is disposed within the cleaning module 100, and when cleaning of the surface is required, the cleaning module 100 can wipe and clean it. When the mop is a tracked type, the cleaning module 100 can clean the mop while it rotates to clean the surface, thus keeping the mop clean and achieving a good cleaning effect on the surface.

[0067] Please see Figure 1 and Figure 2 When the cleaning module 100 cleans the mop, the scraper of the cleaning module 100 can scrape off the dirt on the mop. The wastewater tank 10 is used to store the dirt scraped off by the scraper to prevent dirt from falling onto the surface to be cleaned. With the wastewater tank 10 on the cleaning module 100, the wastewater tank 10 can recover and store the dirt scraped off by the scraper, so that the mop can be kept in a relatively clean state, and the cleaning module 100 has a better cleaning effect on the surface to be cleaned. The cleaning module 100 does not need to frequently clean the mop in the base station 3000, and the cleaning module 100 has a high cleaning efficiency on the surface to be cleaned. The dirt here can include liquid wastewater and solid dirt. The material of the wastewater tank 10 includes, but is not limited to, metal or plastic. Among them, metal materials include, but are not limited to, aluminum, iron, steel or aluminum alloy. When the wastewater tank 10 is made of metal, the wastewater tank 10 has high strength and a long service life. When the sewage tank 10 is made of plastic, the material cost of the sewage tank 10 is low, and the sewage tank 10 is lightweight, making it easy to transport and handle. The cross-sectional shape of the sewage tank 10 can be, but is not limited to, circular, elliptical, triangular, quadrilateral, or other polygonal shapes.

[0068] Please combine Figure 3 and Figure 4 The receiving cavity 11 is used to store the dirt scraped off by the scraped parts, and also to store external liquid entering from the inlet 131. The inlet 131 is used to allow external liquid to enter the channel 13, and can also be used to allow gas to enter the channel 13. When the wastewater tank 10 needs cleaning, external liquid enters the channel 13 from the inlet 131. The liquid here includes, but is not limited to, clean water, cleaning fluid, or a mixture of liquids containing cleaning fluid. When the liquid entering the receiving cavity 11 from the inlet 131 is clean water, the cleaning cost of the wastewater tank 10 is lower. When the liquid entering the receiving cavity 11 from the inlet 131 is cleaning fluid or a mixture of liquids containing cleaning fluid, the mixture of liquids containing cleaning fluid can further dissolve stubborn stains on the inner wall of the wastewater tank 10, resulting in a better cleaning effect.

[0069] Please see Figure 1 and Figure 2The connection hole 12 is used to discharge liquid and waste from the wastewater tank 10. The connection hole 12 can be located at the bottom of the wastewater tank 10 along its height H, allowing liquid and waste to be smoothly discharged from the connection hole 12 to the outside of the wastewater tank 10 by gravity or pressure. Almost all liquid and waste in the wastewater tank 10 can be discharged (if the height of the connection hole 12 is higher than the bottom of the wastewater tank, liquid and waste below the connection hole 12 cannot be discharged). When waste (here, waste scraped from the mop) is discharged through the connection hole 12, some waste may remain in the wastewater tank 10. When the wastewater tank 10 needs cleaning, liquid enters the channel 13 from the inlet 131 and is sprayed into the receiving cavity 11 from multiple outlet holes 15. The liquid can carry the dirt in the receiving cavity 11 out through the connecting hole 12 to the outside of the sewage tank 10, thus keeping the sewage tank 10 in a relatively clean state. The sewage tank 10 can achieve a self-cleaning function by spraying liquid, eliminating the need for manual cleaning and effectively freeing up the user's hands, resulting in a better user experience.

[0070] In one embodiment, when the cleaning module 100 moves to the designated drainage position, the liquid and dirt in the receiving cavity 11 can be directly discharged from the connecting hole 12 to the designated drainage position. In this case, the discharge method of the liquid and dirt in the receiving cavity 11 is relatively simple. In another embodiment, the designated drainage position may be equipped with a suction structure connected to the connecting hole 12, which can suck the liquid and dirt in the receiving cavity 11 out through the connecting hole 12. In this case, the liquid and dirt in the receiving cavity 11 are discharged more quickly. In yet another embodiment, the connecting hole 12 can be connected to the connecting pipe 90 of the cleaning module 100. The liquid and dirt in the receiving cavity 11 are discharged from the connecting hole 12 and enter the connecting pipe 90 of the cleaning module 100. The liquid and dirt flow out to the designated drainage position through the connecting pipe 90 of the cleaning module 100, the wastewater tank 60 of the cleaning module 100, and the drainage component 70 of the cleaning module 100. At this time, the liquid can flush the connecting pipe 90, the wastewater tank 60, and the drain component 70 of the cleaning module 100. The connecting pipe 90, wastewater tank 60, and drain component 70 of the cleaning module 100 do not require manual cleaning, resulting in a better user experience. The connecting hole 12 of this application is connected to the connecting pipe 90 of the cleaning module 100.

[0071] Please see Figure 3 and Figure 4 In the height direction H of the sewage tank 10, a channel 13 is provided at the top of the sewage tank 10. The channel 13 can be used to allow liquid to enter into it and spray it from the outlet 15 in a direction away from the center of the cross-section of the sewage tank towards the inner wall of the sewage tank 10.

[0072] In some embodiments, the extended shape of the channel 13 includes arc, square arc, C-shape, U-shape, L-shape, semi-circular, annular, etc. Liquid entering the channel 13 is sprayed from the outlet 15 towards the inner wall of the sewage tank 10 along a direction away from the center of the cross-section of the sewage tank. When the extended shape of the channel 13 is annular, the channel 13 can be a closed structure. In this case, multiple outlets 15 can be distributed at any position around the circumference of the sewage tank 10. After the liquid is sprayed into the receiving cavity 11 from the multiple outlets 15, the liquid can flow to various positions on the inner wall of the sewage tank 10, thereby achieving a better cleaning effect on the sewage tank 10. When the extended shape of the channel 13 is arc, square arc, C-shape, U-shape, L-shape, or semi-circular, the channel 13 can be a non-closed structure. In this case, multiple outlets 15 are evenly or non-evenly distributed around the circumference of the sewage tank 10 and spray liquid towards the inner wall of the sewage tank 10.

[0073] In some embodiments, the length of the line segment connecting all the outlets 15 is not less than half the perimeter of the sewage tank 10, such as 1 / 2, 2 / 3, or 3 / 4 of the perimeter, or covering the outer perimeter of the sewage tank 10. The outlets 15 cover a large area, and the sprayed liquid covers a large area. Multiple outlets 15 are evenly or non-evenly distributed around the circumference of the sewage tank 10 and spray liquid toward the inner wall of the sewage tank 10.

[0074] When external liquid enters channel 13 through inlet 131, outlet 15 allows the external liquid to enter the receiving cavity 11 and spray towards the inner wall of the wastewater tank 10. When external gas enters channel 13 through inlet 131, outlet 15 allows the external gas to enter the receiving cavity 11. In the height direction H of the wastewater tank 10, with outlet 15 located at the top of the wastewater tank 10, liquid is sprayed into the receiving cavity 11 from outlet 15. The liquid entering the receiving cavity 11 is sprayed towards the inner wall of the top of the wastewater tank 10 in a direction away from the center of the cross-section of the wastewater tank 10, and due to gravity, it flows downward along the inner wall of the wastewater tank 10. Thus, the liquid can carry the dirt on the inner wall of the wastewater tank 10 and flow out of the wastewater tank 10 through connection hole 12, resulting in a better cleaning effect for the wastewater tank 10. Since multiple outlets 15 are arranged circumferentially around the sewage tank 10, the outlets can spray liquid in various directions onto the inner wall of the sewage tank 10, resulting in a larger cleaning range. In addition, when the liquid in the outlets 15 is sprayed toward the inner wall of the sewage tank 10 in a direction away from the center of the cross-section of the sewage tank 10, the distance from the liquid sprayed from the outlets 15 to the inner wall of the sewage tank 10 is shorter, and the splashing force of the liquid sprayed onto the inner wall of the sewage tank 10 is greater. The liquid can effectively wash away the dirt on the inner wall of the sewage tank 10, and the cleaning effect of the liquid on the inner wall of the sewage tank 10 is better. The multiple outlets 15 spraying liquid result in higher cleaning efficiency for the sewage tank 10.

[0075] The number of outlets 15 can be, but is not limited to, two, three, four, five, or more. When there are multiple outlets 15, they are spaced apart around the circumference of the wastewater tank 10. When liquid is simultaneously sprayed into the receiving cavity 11 from multiple outlets 15, the liquid can flow into various locations on the inner wall of the wastewater tank 10, thereby carrying away contaminants from the wastewater tank 10 and achieving a better cleaning effect.

[0076] The wastewater tank 10 of this application embodiment has a channel 13 and multiple outlets 15 at its top. These outlets 15 are spaced apart circumferentially around the wastewater tank 10. When the wastewater tank 10 needs cleaning, external liquid enters the channel 13 and is sprayed from the outlets 15 toward the inner wall of the wastewater tank 10 in a direction away from the center of its cross-section. This allows the external liquid to flush out contaminants from inside the wastewater tank 10. Compared to existing wastewater tanks 10, the wastewater tank 10 of this application has a self-cleaning function. The inner wall of the wastewater tank is sprayed with liquid, resulting in a large cleaning coverage area and high cleaning efficiency. Furthermore, the wastewater tank 10 does not require manual cleaning, providing a better user experience.

[0077] The sewage tank 10 will be further explained below with reference to the attached drawings.

[0078] Please see Figure 3 and Figure 4 In some embodiments, the top of the sewage tank 10 is provided with a water supply component 16, the inner cavity of the water supply component 16 is a channel 13, and along the direction away from the center of the cross-section of the sewage tank 10, the water supply component 16 includes a first side wall 161 and a second side wall 163 facing away from each other, the second side wall 163 faces the center of the cross-section of the sewage tank 10, and the outlet 15 is on the first side wall 161.

[0079] Specifically, when the wastewater tank 10 needs cleaning, the water supply component 16 allows external liquid to enter the wastewater tank 10 and spray it onto the inner wall of the wastewater tank 10. Outlets 15 are formed on the water supply component 16, and multiple outlets 15 can be evenly or non-evenly distributed on the water supply component 16. Preferably, the multiple outlets 15 are evenly distributed on the water supply component 16, allowing the liquid sprayed from the outlets 15 to flow into various locations on the inner wall of the wastewater tank 10, resulting in a better cleaning effect for the wastewater tank 10.

[0080] With the outlet 15 located on the first sidewall 161, the openings of the multiple outlets 15 all face the inner sidewall of the wastewater tank 10. When liquid is sprayed from the outlets 15 into the receiving cavity 11, the liquid can be directly sprayed onto the inner sidewall of the wastewater tank 10. Furthermore, the liquid sprayed directly onto the inner sidewall of the wastewater tank 10 has a certain splashing force, thereby effectively flushing away dirt from the inner sidewall of the wastewater tank 10 and preventing dirt from remaining on the inner sidewall of the wastewater tank 10.

[0081] Please see Figure 4 and Figure 5 In some embodiments, along the flow direction of the liquid within the channel 13, the outlet 15 includes a first surface and a second surface. The second surface is further away from the inlet 131 than the first surface. The second surface is an inclined surface, and the angle between the second surface and the flow direction of the liquid within the channel 13 is an acute angle. Since the channel 13 of this application has only one inlet 131, when the inlet 131 is located in the middle of the channel 13 (excluding the two ends), the liquid entering the channel 13 from the inlet 131 can be divided into two streams flowing into the channel 13. The second surface of the outlet 15, away from the inlet 131, is an inclined surface. During the process of liquid flowing from the channel 13 into the outlet 15, the liquid has forward flow inertia, allowing it to flow out obliquely along the inclined surface of the outlet 15 and spray onto the inner wall of the wastewater tank 10. When the liquid is sprayed at an angle onto the inner wall of the sewage tank 10, the liquid loses less kinetic energy during its flow. Therefore, the liquid ejected from the outlet 15 and splashed onto the inner wall of the sewage tank 10 has a greater jet force, effectively flushing away dirt from the inner wall. Furthermore, the liquid ejected from multiple outlets 15 can flow through almost all parts of the inner wall of the sewage tank 10, resulting in a better cleaning effect. However, if the second surface of the outlet 15 is perpendicular to the flow direction of the liquid in the channel 13, the liquid flowing into the outlet 15 from the channel 13 changes its flow direction significantly, resulting in greater kinetic energy loss. The liquid ejected from the outlet 15 onto the inner wall of the sewage tank 10 has a weaker jet force, leading to a poorer flushing effect and a less effective cleaning of the sewage tank 10.

[0082] Please see Figure 4 and Figure 5Furthermore, in one embodiment, the first surface of the outlet 15 is also an inclined surface, and the angle between the first surface and the flow direction of the liquid in the channel 13 is an obtuse angle. The outlet 15 is a gradually expanding through-hole. When the outlet 15 is a gradually expanding through-hole, the liquid loses less kinetic energy during flow, resulting in a greater jet force of the liquid ejected from the outlet 15 and splashed onto the inner wall of the sewage tank 10. The liquid splashed onto the inner wall of the sewage tank 10 can effectively flush away dirt. The liquid ejected from multiple outlets 15 can flow through almost all positions of the inner wall of the sewage tank 10, resulting in a better cleaning effect for the sewage tank 10. Moreover, when the outlet 15 is a gradually expanding through-hole, the processing of the water supply component 16 is simpler, improving the processing efficiency of the water supply component 16.

[0083] In one embodiment, the water supply component 16 is a protruding structure extending from the top of the wastewater tank 10 into the receiving cavity 11. The inner cavity of the protruding structure is a channel 13. Because the protruding structure protrudes into the receiving cavity 11, the opening of the outlet 15 can face the inner wall of the wastewater tank 10. Liquid in the channel 13 is sprayed from the outlet 15 towards the inner wall of the wastewater tank 10 in a direction away from the center of its cross-section, resulting in better cleaning of the wastewater tank 10.

[0084] Please see Figure 3 and Figure 4 In some embodiments, the water supply component can be a closed annular structure. In this case, the channel 13 is a closed channel 13. When multiple outlets 15 are evenly distributed in the water supply component, the liquid sprayed from the multiple outlets 15 toward the inner wall of the wastewater tank 10 can flow to various positions on the inner wall of the wastewater tank 10. The liquid can carry the dirt from various positions on the inner wall of the wastewater tank 10 and flow out of the wastewater tank 10 through the connection hole 12, resulting in a better cleaning effect for the wastewater tank 10. In other embodiments, the water supply component is an annular structure that can be at least partially opened. In this case, the channel 13 is an open channel 13. When the water supply component is an annular structure that is at least partially open, other components can be installed in the open position of the water supply component, and the structure of the top of the wastewater tank 10 is more compact.

[0085] Please see Figure 6 In some embodiments, the sewage tank 10 includes a tank body 17, which forms a receiving cavity 11; a water supply component 16 extends from the inner wall of the tank body 17 into the receiving cavity 11, the water supply component 16 includes a first sub-part 165 and a second sub-part 167, the first sub-part 165 is connected to the inner wall of the tank body 17, the second sub-part 167 is bent and connected to the first sub-part 165 and spaced from the inner wall of the tank body 17, and an outlet 15 is provided in the second sub-part 167.

[0086] Specifically, when the sewage tank 10 only includes the tank body 17, the structure of the sewage tank 10 is relatively simple, and the processing of the sewage tank 10 is relatively easy. In this case, the receiving cavity 11 can be an open or closed cavity. The first sub-part 165 can be connected to the inner wall of the tank body 17 circumferentially, and the first sub-part 165 can be a ring structure. The second sub-part 167 is connected to the first sub-part 165, and the second sub-part 167 can also be a ring structure. The ring shape of the first sub-part 165 can be the same as the cross-sectional shape of the tank body 17, so that the first sub-part 165 can be stably connected to the inner wall of the tank body 17. The inner cavity of the first sub-part 165 is the first sub-channel 13, and the inner cavity of the second sub-part 167 is the second sub-channel 13. The first sub-channel 13 and the second sub-channel 13 are connected and together form channel 13. When the wastewater tank 10 needs cleaning, external liquid flows into the first sub-channel 13 from the inlet 131 and flows through the second sub-channel 13, then sprays out through the outlet 15 onto the inner wall of the wastewater tank 10.

[0087] The included angle between the first sub-part 165 and the second sub-part 167 can range from 0° to 180°. Preferably, the included angle between the first sub-part 165 and the second sub-part 167 can be 90° or approximately 90°. In this case, the opening of the outlet 15 can face the inner wall of the sewage tank 10. The liquid sprayed from the outlet 15 toward the inner wall of the sewage tank 10 has a certain splashing force, so that the liquid can effectively wash away the dirt on the inner wall of the sewage tank 10 and prevent dirt from remaining on the inner wall of the sewage tank 10.

[0088] Please continue reading. Figure 6The first sub-part 165 can be connected to the inner wall of the top of the tank 17, and the second sub-part 167 is connected to the first sub-part 165. In the height direction H of the sewage tank 10, the second sub-part 167 extends from the top of the tank 17 towards the bottom of the tank 17. In one embodiment, the length of the second sub-part 167 can be relatively short; for example, in the height direction H of the sewage tank 10, the length of the second sub-part 167 can be less than half the height of the tank 17. In this case, less material is used for the second sub-part 167, saving material costs. Multiple outlet holes 15 can be distributed at any position on the second sub-part 167 in the height direction H of the sewage tank 10. When liquid is sprayed from the outlet holes 15 onto the inner wall of the top of the sewage tank 10, the liquid can flow downwards from the top of the tank 17 due to gravity. The liquid can carry the dirt from the inner wall of the sewage tank 10 out of the sewage tank 10 through the connection hole 12, thereby keeping the sewage tank 10 relatively clean. In another embodiment, the second sub-section 167 may be longer; for example, in the height direction H of the wastewater tank 10, the length of the second sub-section 167 may be greater than half the height of the tank body 17. In the height direction H of the wastewater tank 10, multiple outlets 15 may be distributed at any position on the second sub-section 167. In this case, in the height direction H of the wastewater tank 10, the liquid sprayed from the outlets 15 can reach more areas of the inner wall of the wastewater tank 10, resulting in a larger area of ​​the inner wall of the wastewater tank 10 splashed with liquid, thus improving the cleaning effect of the wastewater tank 10.

[0089] The cross-sectional shape of the second sub-part 167 can be, but is not limited to, circular, elliptical, triangular, quadrilateral, or other polygonal shapes. In one embodiment, when the cross-sectional shape of the second sub-part 167 is circular, the plurality of outlet holes 15 can be distributed at any position circumferentially around the second sub-part 167. In this case, the liquid flowing out from the plurality of outlet holes 15 can be sprayed onto any position on the inner wall of the wastewater tank 10, and the liquid can carry the dirt from the inner wall of the wastewater tank 10 out of the wastewater tank 10, resulting in a better cleaning effect. In another embodiment, the plurality of outlet holes 15 can be distributed on the side of the second sub-part 167 away from the center of the cross-section of the wastewater tank 10. In this case, the manufacturing of the second sub-part 167 is simpler. The liquid flowing out from the outlet holes 15 can be sprayed along the cross-section away from the center of the wastewater tank 10 towards the inner wall of the wastewater tank 10, so as to flush the dirt at that position out of the wastewater tank 10.

[0090] When the cross-sectional shape of the second sub-part 167 is quadrilateral, in one embodiment, the plurality of outlets 15 can be distributed at any position on the four sides of the second sub-part 167. In this case, the liquid flowing out from the plurality of outlets 15 can be sprayed onto any position on the inner wall of the sewage tank 10, and the liquid can carry the sewage from the inner wall of the sewage tank 10 out of the sewage tank 10, resulting in a better cleaning effect for the sewage tank 10. In another embodiment, the plurality of outlets 15 can be distributed on the side of the second sub-part 167 away from the center of the cross-section of the sewage tank 10. In this case, the processing of the second sub-part 167 is simpler. The liquid flowing out from the outlets 15 can be sprayed along the cross-section away from the center of the sewage tank 10 toward the inner wall of the sewage tank 10 to flush out the sewage at that position.

[0091] Please see Figures 1 to 4 In other embodiments, the sewage tank 10 includes a combined cover 19 and a tank 17, which together form a receiving cavity 11. The cover 19 includes a first side 191 and a second side 193 facing away from each other. The first side 191 of the cover 19 faces into the receiving cavity 11. A water supply component 16 is provided on the first side 191 of the cover 19, and the water supply component 16 is spaced apart from the inner wall of the tank 17.

[0092] Specifically, the cover 19 and the housing 17 are connected detachably or non-detachably. Detachable connections include, but are not limited to, threaded connections, screw connections, or snap-fit ​​connections, while non-detachable connections include, but are not limited to, welding, adhesive bonding, interference fits, or ultrasonic welding. Preferably, the cover 19 and the housing 17 are detachably connected. In this case, if the cover 19 or the housing 17 is damaged, it is easy to remove the cover 19 or the housing 17 for repair.

[0093] When the receiving cavity 11 is jointly enclosed by the cover 19 and the housing 17, the receiving cavity 11 can be a closed cavity. In this case, when the sewage tank 10 moves or rotates, the dirt or liquid in the receiving cavity 11 will not flow out. In the height direction H of the sewage tank 10, the first side 191 of the cover 19 is the lower side, and the second side 193 of the cover 19 is the upper side. The water supply component 16 of the first side 191 of the cover 19 has a ring structure, and the shape of this ring structure can be similar to the cross-section of the sewage tank 10. When multiple outlets 15 are distributed in the water supply component 16, liquid can be sprayed from the multiple outlets 15 towards various positions on the inner wall of the sewage tank 10, resulting in a better cleaning effect of the sewage tank 10.

[0094] Please see Figure 3 and Figure 4Furthermore, in some embodiments, the first side 191 of the cover 19 is also provided with a separator 195 and a liquid inlet structure 197. The separator 195 is connected to the inner wall of the cover 19 to divide the first side 191 of the cover 19 into a first zone 1911 and a second zone 1913. The water supply component 16 is located in the first zone 1911. The first zone 1911 and the box 17 together form a receiving cavity 11. One end of the liquid inlet structure 197 is located in the first zone 1911 and communicates with the water supply component 16, and the other end is located in the second zone 1913 and is provided with an inlet 131.

[0095] The liquid inlet structure 197 is used to guide external liquid into the water supply component 16. The inner cavity of the liquid inlet structure 197 and the inner cavity of the water supply component 16 are connected and can jointly form a channel 13. The inlet 131 of the channel 13 is opened in the liquid inlet structure 197 and is used to allow external liquid to enter the channel 13. The liquid inlet structure 197 and the water supply component 16 can be an integral structure or separate structures. When the liquid inlet structure 197 and the water supply component 16 are an integral structure, they can be integrally formed. When the liquid inlet structure 197 and the water supply component 16 are separate structures, they can be detachably or non-detachably connected.

[0096] The separator 195 divides the first side 191 of the cover 19 into a first zone 1911 and a second zone 1913, with the first zone 1911 and the second zone 1913 separated. The receiving cavity 11 formed by the first zone 1911 and the housing 17 can be a closed cavity, so that liquid and dirt in the receiving cavity 11 do not easily flow out from between the cover 19 and the housing 17. The liquid inlet structure 197 located in the second zone 1913 can communicate with other external components to guide external liquid to the water supply component 16. The separator 195 and the side wall of the cover 19 can be an integral structure or a separate structure. When the separator 195 and the side wall of the cover 19 are an integral structure, the separator 195 and the side wall of the cover 19 can be integrally formed. When the separator 195 and the side wall of the cover 19 are a separate structure, the separator 195 and the side wall of the cover 19 can be detachably or non-detachably connected. The material of the separator 195 can be the same as the material of the side wall of the cover 19, or the material of the separator 195 can be different from the material of the side wall of the cover 19.

[0097] Please see Figure 3 Furthermore, in some embodiments, the cover 19 includes a first cover 198 and a second cover 199, which are detachably connected and together form the channel 13.

[0098] The first cover 198 is connected to the second cover 199, and the second cover 199 is connected to the housing 17. The first cover 198 and the second cover 199 together form a channel 13, and the second cover 199 and the housing 17 together form a receiving cavity 11. The detachable installation methods between the first cover 198 and the second cover 199 include, but are not limited to, threaded connection, screw connection, or snap-fit ​​connection.

[0099] The shape of the first cover 198 can be approximately the same as the shape of the channel 13, and the width of the first cover 198 is greater than or equal to the width of the channel 13. Therefore, when the first cover 198 and the second cover 199 together enclose the channel 13, less material is needed for the first cover 198, saving material costs. With the first cover 198 and the second cover 199 detachably connected, cleaning the channel 13 is more convenient. After the wastewater tank 10 has been used for a period of time, the first cover 198 can be removed from the second cover 199, and the channel 13 can be cleaned to keep the interior of the channel 13 relatively clean. When liquid enters the channel 13 from the inlet 131 and is sprayed from the channel 13 through the outlet 15 onto the inner wall of the wastewater tank 10, the liquid will not carry dirt from the channel 13 into the wastewater tank 10, resulting in a better cleaning effect for the wastewater tank 10.

[0100] Please see Figure 1 and Figure 2 Secondly, embodiments of this application provide a cleaning module 100, which includes a main body 30 and a wastewater tank 10 as described above, with the wastewater tank 10 disposed on the main body 30.

[0101] The wastewater tank 10 can be detachably or non-detachably connected to the main body 30. Detachable installation methods include, but are not limited to, threaded connections, screw connections, or snap-fit ​​connections, while non-detachable installation methods include, but are not limited to, welding, gluing, or interference fits. When the wastewater tank 10 is detachably connected to the main body 30, it can be easily removed from the main body 30 for repair in case of damage. When the wastewater tank 10 is non-detachably connected to the main body 30, the wastewater tank 10 and the main body 30 can be integrally molded, simplifying the processing steps of the cleaning module 100.

[0102] Please see Figure 1 and Figure 2In some embodiments, the cleaning module 100 further includes a first air pump 50 disposed on the body 30. The wastewater tank 10 is also provided with a first air hole 14, one end of which is connected to the receiving cavity 11 and the other end is connected to the first air pump 50. When the receiving cavity 11 stores waste, the first air pump 50 is used to extract gas from the receiving cavity 11 through the first air hole 14. When the stored waste is discharged from the receiving cavity 11 and liquid is sprayed into the receiving cavity 11 through the outlet 15, the first air pump 50 is used to extract gas from the receiving cavity 11 through the first air hole 14.

[0103] Specifically, the first air vent 14 is connected to the first air pump 50, and the first air vent 14 is used to allow gas from the receiving cavity 11 to flow into the first air pump 50. When the cleaning module 100 is cleaning the surface to be cleaned, the dirt from the mopping component is scraped off by the scraping component, and the scraped dirt enters the wastewater tank 10 and is stored in the wastewater tank 10. Since the receiving cavity 11 is a closed cavity, when the first air pump 50 draws gas from the receiving cavity 11 through the first air vent 14, the receiving cavity 11 is under negative pressure. The air pressure inside the receiving cavity 11 is lower than the air pressure outside the receiving cavity 11, and the dirt scraped off by the scraping component is squeezed into the receiving cavity 11 and stored in the receiving cavity 11. When dirt enters the receiving cavity 11, the first air pump 50 can stop drawing gas from the receiving cavity 11. The receiving cavity 11 can be maintained in a negative pressure state, and the dirt can be stably stored in the receiving cavity 11, thereby preventing the problem of dirt flowing from the receiving cavity 11 to the surface to be cleaned.

[0104] After the waste in the wastewater tank 10 is discharged to the designated location, the wastewater tank 10 needs to be cleaned. External liquid enters the channel 13 through the inlet 131 and is sprayed onto the inner wall of the wastewater tank 10 through the outlet 15. At this time, the first air pump 50 draws gas from the receiving cavity 11 through the first air hole 14, creating a negative pressure inside the receiving cavity 11. The air pressure inside the receiving cavity 11 is lower than the air pressure outside the receiving cavity 11, making it difficult for the liquid entering the receiving cavity 11 to flow out of the wastewater tank 10, and the liquid will be stored in the receiving cavity 11. The liquid in the channel 13 is continuously sprayed onto the inner wall of the wastewater tank 10 through the outlet 15, thereby continuously increasing the amount of liquid stored in the receiving cavity 11. When the receiving cavity 11 is full of liquid, the external liquid supply to the channel 13 stops, and the liquid stops spraying onto the inner wall of the wastewater tank 10. At this time, the first air pump 50 can stop drawing gas from the receiving cavity 11, and the receiving cavity 11 can be maintained at a negative pressure. The liquid stored in the receiving cavity 11 can soak the inner wall of the sewage tank 10. Since the receiving cavity 11 is filled with liquid, the liquid can soak all parts of the inner wall of the sewage tank 10. When the inner wall of the sewage tank 10 is soaked by liquid, the liquid can dissolve the dirt on the inner wall of the sewage tank 10, so the liquid has a better cleaning effect on the sewage tank 10.

[0105] Please see Figure 1 and Figure 2 In some embodiments, when the waste in the receiving cavity 11 is discharged from the sewage tank 10, the first air pump 50 is also used to pump air into the receiving cavity 11 through the first air hole 14.

[0106] The liquid sprayed into the receiving cavity 11 through the outlet 15 dissolves the dirt on the inner wall of the sewage tank 10 after soaking it for a period of time. Once the liquid has dissolved the dirt, it can carry the dirt out of the sewage tank 10 through the connection hole 12. At this time, the first air pump 50 switches from drawing gas from the receiving cavity 11 to pumping air into the receiving cavity 11. The first air hole 14 is connected to the first air pump 50 and is used to allow gas from the first air pump 50 to enter the receiving cavity 11. When the first air pump 50 pumps air into the receiving cavity 11 through the first air hole 14, the air pressure inside the receiving cavity 11 is greater than the air pressure outside the receiving cavity 11, thus allowing the liquid in the receiving cavity 11 to carry the dirt out through the connection hole 12 to the outside of the sewage tank 10. Furthermore, when the first air pump 50 pumps air into the receiving cavity 11, all the liquid and dirt in the receiving cavity 11 can be discharged to the outside of the sewage tank 10, leaving no residual liquid and dirt in the sewage tank 10, thus achieving a better cleaning effect for the sewage tank 10.

[0107] When the first air pump 50 pumps air into the receiving cavity 11 to discharge liquid and waste from the wastewater tank 10, the connecting pipe 90 of the cleaning module 100 can be a straight pipe, or it can include a bend. When the connecting pipe 90 includes a bend, the highest point of the bend is higher than the connecting hole 12 in the height direction H of the wastewater tank 10. When the first air pump 50 does not pump air into the receiving cavity 11, liquid and waste in the receiving cavity 11 are difficult to discharge from the cleaning module 100 through the bend, thus preventing liquid and waste from flowing onto the surface to be cleaned. When liquid and waste in the receiving cavity 11 need to be discharged, the first air pump 50 pumps air into the receiving cavity 11, and the liquid and waste flowing into the connecting pipe 90 overcomes the height of the bend, allowing the liquid and waste to be discharged outside the cleaning module 100.

[0108] In other embodiments, when liquid and waste in the receiving cavity 11 need to be discharged from the wastewater tank 10, the receiving cavity 11 can be connected to the atmosphere, so that the air pressure inside the receiving cavity 11 is the same as the atmospheric pressure, and the liquid and waste in the receiving cavity 11 can flow out of the wastewater tank 10 through the connecting hole 12. The method of liquid and waste flowing out of the wastewater tank 10 from the receiving cavity 11 is relatively simple. At this time, the connecting pipe 90 of the cleaning module 100 can be a straight pipe, and the connecting pipe 90 is connected to the connecting hole 12, so that the liquid and waste in the receiving cavity 11 can flow out of the cleaning module 100 through the connecting pipe 90.

[0109] The number of first vents 14 can be, but is not limited to, one, two, three, or more. When there is only one first vent 14, the structure of the sewage tank 10 is relatively simple, and its manufacturing is relatively easy. When there are multiple first vents 14, the first air pump 50 is connected to all of the first vents 14. The first air pump 50 can simultaneously extract gas from the receiving cavity 11 through the multiple first vents 14, enabling it to quickly extract gas from the receiving cavity 11 with high efficiency. The first air pump 50 can also simultaneously pump air into the receiving cavity 11 through the multiple first vents 14, allowing the liquid and waste in the receiving cavity 11 to be quickly discharged outside the sewage tank 10. In this embodiment, the number of first vents 14 is one.

[0110] When the first air pump 50 is used to extract gas from the receiving cavity 11 and also to pump air into the receiving cavity 11, the cleaning module 100 has a simpler structure and fewer components, thus saving costs. When the first air hole 14 is used to allow gas from the receiving cavity 11 to flow into the first air pump 50 and also to allow gas from the first air pump 50 to enter the receiving cavity 11, the wastewater tank 10 has a simpler structure and is easier to manufacture.

[0111] Please continue reading. Figure 1 and Figure 2 Furthermore, in some embodiments, the wastewater tank 10 is also provided with a second vent spaced apart from the first vent 14, and the second vent communicates with the receiving cavity 11. When the waste in the receiving cavity 11 is discharged from the wastewater tank 10, the first air pump 50 is used to pump air into the receiving cavity 11 through the second vent.

[0112] One end of the second vent is connected to the receiving cavity 11, and the other end is connected to the first air pump 50. The second vent is used to allow gas from the first air pump 50 to enter the receiving cavity 11. When the first air pump 50 pumps air into the receiving cavity 11 through the second vent, the air pressure inside the receiving cavity 11 is greater than the air pressure outside the receiving cavity 11. As a result, the liquid inside the receiving cavity 11 can carry the dirt out through the connecting hole 12 to the outside of the sewage tank 10. Furthermore, when the first air pump 50 pumps air into the receiving cavity 11, all the liquid and dirt inside the receiving cavity 11 can be discharged to the outside of the sewage tank 10, leaving no residual liquid or dirt in the sewage tank 10, thus achieving a better cleaning effect for the sewage tank 10.

[0113] The number of second vents can be, but is not limited to, one, two, three, or more. When there is only one second vent, the structure of the sewage tank 10 is relatively simple, and its manufacturing is easier. When there are multiple second vents, the first air pump 50 is connected to all of them, allowing the first air pump 50 to simultaneously pump air into the receiving cavity 11 through all the second vents, thus enabling the liquid and waste in the receiving cavity 11 to be quickly discharged out of the sewage tank 10. In this embodiment, the number of second vents is one.

[0114] With the first vent 14 used to allow gas from the receiving cavity 11 to flow into the first air pump 50, and the second vent used to allow gas from the first air pump 50 to enter the receiving cavity 11, the first vent 14 and the second vent do not interfere with each other, thus improving the working efficiency of the first air pump 50 (the efficiency of extracting gas from the receiving cavity 11 and the efficiency of pumping gas into the receiving cavity 11). Furthermore, if the first vent 14 is damaged, it will not affect the function of the second vent. Similarly, if the second vent is damaged, it will not affect the function of the first vent 14, resulting in good stability and reliability of the wastewater tank 10.

[0115] Please see Figure 1 and Figure 2 Furthermore, in some embodiments, the cleaning module 100 also includes a second air pump, and the sewage tank 10 is also provided with a second air hole spaced apart from the first air hole 14. One end of the second air hole is connected to the receiving cavity 11, and the other end is connected to the second air pump. When the sewage in the receiving cavity 11 is discharged from the sewage tank 10, the second air pump is used to pump air into the receiving cavity 11 through the second air hole.

[0116] When liquid is sprayed into the receiving cavity 11 through the outlet 15, the first air pump 50 draws gas from the receiving cavity 11 through the first air hole 14, so that the liquid is stored in the receiving cavity 11 and can soak the inner wall of the sewage tank 10. A second air pump is disposed on the main body 30 and spaced apart from the first air pump 50. When the liquid dissolves the dirt on the inner wall of the sewage tank 10, the second air pump can pump air into the receiving cavity 11 through the second air hole. When the second air pump pumps air into the receiving cavity 11 through the second air hole, the air pressure inside the receiving cavity 11 is greater than the air pressure outside the receiving cavity 11, so that the liquid in the receiving cavity 11 can carry the dirt out of the sewage tank 10. Furthermore, when the second air pump pumps air into the receiving cavity 11, all the liquid and dirt in the receiving cavity 11 can be discharged out of the sewage tank 10, leaving no residual liquid or dirt in the sewage tank 10, thus achieving a good cleaning effect for the sewage tank 10.

[0117] With the first air pump 50 used to extract gas from the receiving cavity 11 and the second air pump used to pump air into the receiving cavity 11, when liquid and waste need to be discharged from the sewage tank 10, the second air pump can be quickly started and pump air into the receiving cavity 11. The first air pump 50 does not need to switch from extraction to pumping mode; the use of the second air pump saves the time of this switching process, allowing liquid and waste to be quickly discharged from the connection hole 12 to the outside of the sewage tank 10. Furthermore, the division of labor between the first and second air pumps is clear, and both have a long service life.

[0118] Please see Figure 1 and Figure 2 In some embodiments, the cleaning module 100 further includes a wastewater tank 60, a drain component 70, and a connecting pipe 90. The wastewater tank 60 is disposed on the main body 30 and is used to collect waste. The drain component 70 is connected to the wastewater tank 60 and has a drain outlet 71 that communicates with the wastewater tank 60. One end of the connecting pipe 90 is connected to the wastewater tank 10, and the other end is connected to the wastewater tank 60.

[0119] Specifically, the connecting pipe 90 is connected to the connecting hole 12 of the sewage tank 10. The connecting pipe 90 connects the sewage tank 60 and the receiving cavity 11. Waste in the sewage tank 60 can enter the receiving cavity 11 through the connecting pipe 90, and liquid and waste in the receiving cavity 11 can also enter the sewage tank 60 through the connecting pipe 90. The material of the connecting pipe 90 can be, but is not limited to, metal or plastic. When the connecting pipe 90 is made of metal, it has higher strength, better wear resistance, and a longer service life. When the connecting pipe 90 is made of plastic, it is lighter and less expensive. The drain component 70 is used to drain the liquid and waste in the sewage tank 60 to the outside of the cleaning module 100. The material of the drain component 70 can be, but is not limited to, metal or plastic. When the drain component 70 is made of metal, it has higher strength, better wear resistance, and a longer service life. When the drain component 70 is made of plastic, it is lighter and less expensive.

[0120] The receiving cavity 11, connecting pipe 90, wastewater tank 60, and drain outlet 71 are connected in sequence. When the cleaning module 100 cleans the surface to be cleaned, the dirt on the mop is scraped off by the scraper and falls into the wastewater tank 60. As the first air pump 50 draws air from the receiving cavity 11 through the first air hole 14, the dirt in the wastewater tank 60 flows into the connecting pipe 90 and then into the receiving cavity 11, thus storing the dirt in the wastewater tank 10. When the dirt in the wastewater tank 10 (here, the dirt is the dirt from the mop stored in the wastewater tank 10) needs to be discharged, the first air pump 50 or the second air pump pumps air into the receiving cavity 11. The dirt in the receiving cavity 11 passes through the connecting pipe 90 and the wastewater tank 60 and is discharged from the drain outlet 71.

[0121] After the sewage tank 10 is soaked in liquid, the liquid carrying the dirt in the receiving cavity 11 flows out through the connection hole 12. The water pressure is relatively high when the liquid and dirt flow out of the connection hole 12. At this time, when the liquid flows through the connecting pipe 90, sewage tank 60 and drain device 70, the liquid can flush the connecting pipe 90, sewage tank 60 and drain device 70. The liquid can carry the dirt from the connecting pipe 90, sewage tank 60 and drain device 70 out through the drain port 71, so that the connecting pipe 90, sewage tank 60 and drain device 70 can be kept in a relatively clean state.

[0122] In some embodiments, the connecting pipe 90 includes a connecting portion and a bending portion. The connecting portion is connected to the bending portion. One end of the bending portion is connected to the sewage tank 10, and one end of the connecting portion is connected to the sewage trough 60. In the height direction H of the sewage tank 10, the highest point of the bending portion is higher than the connection point between the connecting pipe 90 and the sewage tank 10.

[0123] If the receiving cavity 11 stores waste or the wastewater tank is soaked by external liquid, and the sealing of the receiving cavity 11 is not good enough, the liquid and waste inside the receiving cavity 11 may flow out from the connecting pipe 90, causing a water leakage problem. The bend prevents the liquid and waste inside the receiving cavity 11 from flowing out from the connecting pipe 90. In the height direction H of the wastewater tank 10, the highest point of the bend is higher than the connecting hole 12, so the liquid and waste flowing out from the connecting hole 12 cannot cross the bend and flow into the wastewater tank 60, thereby preventing the problem of liquid and waste flowing onto the surface to be cleaned.

[0124] Please see Figure 1 , Figure 2 and Figure 4 Furthermore, in some embodiments, the cleaning module 100 also includes a clean water tank disposed on the body 30, the clean water tank being connected to the inlet 131 and used to store cleaning liquid.

[0125] The cleaning liquid used here is the same as the "liquid" mentioned above, including clean water, cleaning solution, or a mixture of clean water and cleaning solution. When the cleaning module 100 is cleaning the surface to be cleaned, the clean water tank provides the cleaning liquid to the mop to keep it moist, resulting in better cleaning of the surface. When the wastewater tank 10 needs cleaning, the clean water tank provides the cleaning liquid to it. The clean water tank is connected to inlet 131, and the cleaning liquid in the clean water tank enters channel 13 from inlet 131 and is sprayed onto the inner wall of the wastewater tank 10 from outlet 15 to clean it. When liquid and dirt in the wastewater tank 10 flow out from connecting pipe 90, wastewater tank 60, and drain outlet 71, the cleaning liquid also cleans connecting pipe 90, wastewater tank 60, and drain outlet 70.

[0126] When the clean water tank of the cleaning module 100 supplies cleaning liquid to the wastewater tank 10, the distance between the clean water tank and the wastewater tank 10 is relatively short, resulting in a shorter time for the cleaning liquid to flow from the clean water tank to the wastewater tank 10, thus achieving higher cleaning efficiency for the wastewater tank 10. Furthermore, even when the cleaning equipment 1000 moves, the relative distance between the clean water tank and the wastewater tank 10 remains constant, allowing the clean water tank to supply cleaning liquid to the wastewater tank 10 at any time, making the cleaning of the wastewater tank 10 more convenient.

[0127] The cleaning module 100 of this application embodiment has a channel 13 and multiple outlets 15 at the top of the sewage tank 10. The outlets 15 are spaced apart circumferentially around the sewage tank 10. When the sewage tank 10 needs cleaning, external liquid enters the channel 13 and is sprayed from the outlets 15 toward the inner wall of the sewage tank 10 in a direction away from the center of the cross-section of the sewage tank 10. The dirt inside the sewage tank 10 can be flushed out of the sewage tank 10 by the external liquid. Compared with the current sewage tank 10, the sewage tank 10 of this application can achieve a self-cleaning function and has a higher cleaning efficiency. Moreover, the sewage tank 10 does not require manual cleaning, resulting in a better user experience.

[0128] Please see Figure 7 Thirdly, embodiments of this application also provide a cleaning device 1000, which includes a body 300 and a cleaning module 100 as described above, with the cleaning module 100 disposed on the body 300.

[0129] In some embodiments, the cleaning device 1000 also includes a clean water tank disposed on the main body 30 and / or the casing 300, the clean water tank being connected to the inlet 131 and used to store cleaning liquid.

[0130] The cleaning liquid referred to here is the same as the "liquid" mentioned above, including clean water, cleaning solution, or a mixture of clean water and cleaning solution. In one embodiment, a clean water tank is disposed on the body 30 of the cleaning module 100. The clean water tank here has the same structure as the clean water tank in the second aspect, and will not be described in detail here.

[0131] Please see Figure 1 , Figure 2 , Figure 4 and Figure 7 In another embodiment, a clean water tank is provided on the body 300. The clean water tank on the body 300 is used to provide cleaning liquid to the mopping components and also to provide cleaning liquid to the wastewater tank 10. When the wastewater tank 10 needs cleaning, the clean water tank on the body 300 provides cleaning liquid to the wastewater tank 10. The clean water tank is connected to the inlet 131 via a pipe. The cleaning liquid in the clean water tank enters the channel 13 from the inlet 131 and is sprayed from the outlet 15 onto the inner wall of the wastewater tank 10 to clean it. When liquid and dirt in the wastewater tank 10 flow out from the connecting pipe 90, the wastewater tank 60, and the drain outlet 71, the cleaning liquid is also used to clean the connecting pipe 90, the wastewater tank 60, and the drain component 70.

[0132] When the clean water tank mounted on the machine body 300 supplies cleaning liquid to the wastewater tank 10, the distance between the clean water tank and the wastewater tank 10 is relatively short, resulting in a shorter time for the cleaning liquid to flow from the clean water tank into the wastewater tank 10, thus achieving higher cleaning efficiency for the wastewater tank 10. Furthermore, even when the cleaning equipment 1000 moves, the relative distance between the clean water tank and the wastewater tank 10 remains constant, allowing the clean water tank to supply cleaning liquid to the wastewater tank 10 at any time, making the cleaning of the wastewater tank 10 more convenient.

[0133] In other embodiments, when the wastewater tank 10 requires cleaning, an external water source can provide cleaning liquid to the wastewater tank 10. The external water source and inlet 131 can be connected by a pipe, and the cleaning liquid from the external water source enters the channel 13 from inlet 131 and is sprayed from outlet 15 onto the inner wall of the wastewater tank 10 to clean the wastewater tank 10. When liquid and dirt in the wastewater tank 10 flow out from connecting pipe 90, wastewater tank 60 and drain outlet 71, the cleaning liquid is also used to clean connecting pipe 90, wastewater tank 60 and drain outlet 70.

[0134] The cleaning device 1000 of this application has a channel 13 and multiple outlets 15 at the top of the sewage tank 10. The outlets 15 are spaced apart circumferentially around the sewage tank 10. When the sewage tank 10 needs cleaning, external liquid enters the channel 13 and is sprayed from the outlets 15 toward the inner wall of the sewage tank 10 in a direction away from the center of its cross-section. Dirt inside the sewage tank 10 can be flushed out by the external liquid. Compared to current sewage tanks 10, the sewage tank 10 of this application has a self-cleaning function and higher cleaning efficiency. Furthermore, the sewage tank 10 does not require manual cleaning, resulting in a better user experience.

[0135] Please see Figure 7 and Figure 8 Fourthly, embodiments of this application also provide a base station 3000 for maintaining the cleaning equipment 1000.

[0136] Base station 3000 is a device used for the maintenance and upkeep of cleaning equipment 1000. For example, base station 3000 can clean the mopping parts of cleaning equipment 1000 and can also charge cleaning equipment 1000. Furthermore, base station 3000 may also have at least one of the following functions: replenishing water, draining water, and collecting dust from cleaning equipment 1000. When the mopping parts of cleaning equipment 1000 are dirty and / or have insufficient power, cleaning equipment 1000 returns to base station 3000 to clean the mopping parts and / or recharge. When the mopping parts of cleaning equipment 1000 are cleaned and / or fully charged, cleaning equipment 1000 can leave base station 3000 and continue cleaning surfaces.

[0137] Please see Figure 7 and Figure 8 Fifthly, embodiments of this application also provide a cleaning system 10000, which includes a cleaning device 1000 and a base station 3000. The base station 3000 is used to maintain the cleaning device 1000. The cleaning device 1000 includes a body 300 and a cleaning module 100 as described in the above embodiments. The cleaning module 100 is disposed on the body 300.

[0138] The base station 3000 is a device used for the maintenance and upkeep of the cleaning equipment 1000. For example, the base station 3000 can clean the mop attachments of the cleaning equipment 1000 and can also charge the cleaning equipment 1000. Furthermore, the base station 3000 may also have at least one of the following functions: replenishing water, draining water, and collecting dust from the cleaning equipment 1000. When the mop attachments of the cleaning equipment 1000 are dirty and / or the battery is low, the cleaning equipment 1000 returns to the base station 3000 to clean the mop attachments and / or recharge. After the mop attachments of the cleaning equipment 1000 are cleaned and / or fully charged, the cleaning equipment 1000 can leave the base station 3000 and continue cleaning the surface to be cleaned.

[0139] Please see Figure 1 , Figure 2 , Figure 4 and Figure 8 In some embodiments, the cleaning system 10000 further includes a clean water tank disposed in at least one of the main body 30, the fuselage 300 and the base station 3000. The clean water tank is connected to the inlet 131 and is used to store cleaning liquid.

[0140] The cleaning liquid referred to here is the same as the "liquid" mentioned above, including clean water, cleaning solution, or a mixture containing cleaning solution. In one embodiment, a clean water tank is disposed on the body 30 of the cleaning module 100. The clean water tank here has the same structure as the clean water tank in the second aspect, and will not be described in detail here. In another embodiment, a clean water tank is disposed on the body 300 of the cleaning module 100. The clean water tank here has the same structure as the clean water tank in the third aspect, and will not be described in detail here.

[0141] In another embodiment, a clean water tank is installed at the base station 3000. The clean water tank on the base station 3000 can spray cleaning liquid to clean the cleaning equipment 1000, and the clean water tank is also used to replenish the clean water tank of the cleaning equipment 1000. When the sewage tank 10 needs cleaning, the cleaning equipment 1000 returns to the base station 3000, and the clean water tank installed on the base station 3000 provides cleaning liquid to the sewage tank 10. The clean water tank is connected to inlet 131, and the cleaning liquid in the clean water tank enters channel 13 from inlet 131 and is sprayed from outlet 15 onto the inner wall of the sewage tank 10 to clean the sewage tank 10. When liquid and dirt in the sewage tank 10 flow out from connecting pipe 90, sewage tank 60, and drain outlet 71, the cleaning liquid is also used to clean connecting pipe 90, sewage tank 60, and drain outlet 70.

[0142] When the clean water tank installed on the base station 3000 provides cleaning liquid to the sewage tank 10, and the cleaning equipment 1000 returns to the base station 3000 to clean the sewage tank 10, the liquid carrying the sewage flows out of the cleaning equipment 1000, and the liquid and sewage can flow directly into the base station 3000, making the discharge of liquid and sewage more convenient.

[0143] Please see Figure 1 , Figure 2 , Figure 4 and Figure 8 Furthermore, in some embodiments, the base station 3000 is provided with a third air pump. When contaminants in the receiving cavity 11 are discharged from the sewage tank 10, the third air pump is used to pump air into the receiving cavity 11 through the inlet 131 or the second air hole.

[0144] When the third air pump pumps air into the receiving cavity 11 through inlet 131, the third air pump is connected to inlet 131, and the gas enters the channel 13 from inlet 131 and passes through multiple outlets 15 into the receiving cavity 11 to increase the air pressure inside the receiving cavity 11. When the third air pump pumps air into the receiving cavity 11 through the second air hole (the second air hole here has the same structure as the second air hole in the second aspect, and the second air hole is opened in the sewage tank 10), the third air pump is connected to the second air hole and pumps air into the receiving cavity 11 through the second air hole.

[0145] When the liquid dissolves the dirt on the inner wall of the sewage tank 10, the third air pump can pump air into the receiving cavity 11 through inlet 131 or the second air hole. When the third air pump pumps air into the receiving cavity 11 through inlet 131, the gas enters the channel 13 and then enters the receiving cavity through the outlet 15, increasing the air pressure inside the receiving cavity 11. When the third air pump pumps air into the receiving cavity 11 through inlet 131 or the second air hole, the air pressure inside the receiving cavity 11 is greater than the air pressure outside the receiving cavity 11, allowing the liquid in the receiving cavity 11 to carry the dirt out through the connecting hole 12 to the outside of the sewage tank 10. Furthermore, when the third air pump pumps air into the receiving cavity 11, all the liquid and dirt in the receiving cavity 11 can be discharged to the outside of the sewage tank 10, leaving no residual liquid or dirt inside the sewage tank 10, thus achieving a better cleaning effect for the sewage tank 10.

[0146] When the first air pump 50 is used to extract gas from the receiving cavity 11, and the third air pump is used to pump air into the receiving cavity 11, the third air pump can be quickly activated and pump air into the receiving cavity 11 when waste needs to be discharged from the wastewater tank 10. The first air pump 50 does not need to switch from extraction to pumping mode; the use of the third air pump saves the time required for this switching process, allowing liquid and waste to be quickly discharged from the connection hole 12 to the outside of the wastewater tank 10. Furthermore, the division of labor between the first and third air pumps is clear, resulting in a longer service life for both. Because the third air pump is located in the base station 3000, the cleaning device 1000 is lighter, making it easier to move when cleaning surfaces.

[0147] The cleaning system 10000 of this application has a channel 13 and multiple outlets 15 at the top of the sewage tank 10. The outlets 15 are spaced apart circumferentially around the sewage tank 10. When the sewage tank 10 needs cleaning, external liquid enters the channel 13 and is sprayed from the outlets 15 toward the inner wall of the sewage tank 10 in a direction away from the center of its cross-section. Dirt inside the sewage tank 10 can be flushed out by the external liquid. Compared to current sewage tanks 10, the sewage tank 10 of this application has a self-cleaning function and higher cleaning efficiency. Furthermore, the sewage tank 10 does not require manual cleaning, resulting in a better user experience.

[0148] Please see Figure 1 , Figure 3 , Figure 4 and Figure 9 Sixthly, embodiments of this application also provide a method for cleaning a sewage tank, the cleaning method being applied to the sewage tank 10 of the above embodiments, the cleaning method comprising:

[0149] 01: The cleaning liquid enters the channel 13 from the inlet 131 and is sprayed onto the inner wall of the sewage tank 10 from the outlet 15;

[0150] 05: The cleaning liquid flows down the inner wall of the receiving cavity 11 and is stored inside the receiving cavity 11. The receiving cavity 11 is then soaked in the cleaning liquid for a predetermined time; and

[0151] 07: The waste in the receiving cavity 11 is discharged to the outside of the sewage tank 10.

[0152] Specifically, in one embodiment, when the wastewater tank 10 needs cleaning, a clean water tank installed in the main body 30 provides cleaning liquid to the wastewater tank 10. The clean water tank may be equipped with a water pump. When the wastewater tank 10 needs cleaning, the controller of the wastewater tank 10 can control the water pump to start, so as to pump the cleaning liquid in the clean water tank into the channel 13 through the inlet 131. The cleaning liquid is sprayed from the outlet 15 onto the inner wall of the wastewater tank 10, and the cleaning liquid can rinse the inner wall of the wastewater tank 10.

[0153] Please combine Figure 7 In another embodiment, when the wastewater tank 10 needs cleaning, a clean water tank located on the body 300 of the cleaning equipment 1000 provides cleaning liquid to the wastewater tank 10. The clean water tank may be equipped with a water pump. When the wastewater tank 10 needs cleaning, the clean water tank is connected to inlet 131, and the controller of the wastewater tank 10 can control the water pump to start, pumping the cleaning liquid from the clean water tank into the channel 13 through inlet 131. The cleaning liquid can be sprayed from outlet 15 onto the inner wall of the wastewater tank 10, rinsing the inner wall of the wastewater tank 10.

[0154] Please combine Figure 8 In another embodiment, when the wastewater tank 10 needs cleaning, a clean water tank installed in the base station 3000 provides cleaning liquid to the wastewater tank 10. The clean water tank may be equipped with a water pump. When the wastewater tank 10 needs cleaning, the clean water tank is connected to inlet 131, and the controller of the wastewater tank 10 or the controller of the base station 3000 can control the water pump to start, pumping the cleaning liquid from the clean water tank into channel 13 through inlet 131. The cleaning liquid can be sprayed from outlet 15 onto the inner wall of the wastewater tank 10, rinsing the inner wall of the wastewater tank 10.

[0155] In another embodiment, when the wastewater tank 10 needs cleaning, an external water source provides cleaning liquid to the wastewater tank 10. The external water source may be equipped with a water pump. When the wastewater tank 10 needs cleaning, the external water source is connected to inlet 131, and the controller of the wastewater tank 10 controls the water pump to start, pumping the cleaning liquid from the clean water tank into the channel 13 through inlet 131. The cleaning liquid can be sprayed from outlet 15 onto the inner wall of the wastewater tank 10, rinsing the inner wall of the wastewater tank 10.

[0156] Please see Figures 1 to 4Since the outlet 15 is located at the top of the wastewater tank 10, when the cleaning liquid is sprayed from the outlet 15 onto the inner wall of the top of the wastewater tank 10, the cleaning liquid will flow down the inner wall of the wastewater tank 10 due to gravity. As the cleaning liquid flows down the inner wall of the wastewater tank 10, it can rinse various parts of the inner wall of the wastewater tank 10. When the cleaning liquid reaches the bottom of the wastewater tank 10, it can be stored in the receiving cavity 11 and soaked in the receiving cavity 11 for a predetermined time. The predetermined time refers to the time required for the cleaning liquid to fully dissolve the dirt on the inner wall of the wastewater tank 10. The predetermined time is the time from when the cleaning liquid fills the receiving cavity 11 until the liquid and dirt begin to drain from the wastewater tank 10. For example, the predetermined time can be 3 minutes, 5 minutes, or 10 minutes, etc. For example, if the predetermined duration is 5 minutes, the time required for the cleaning liquid to fully dissolve the dirt on the inner wall of the wastewater tank 10 is 5 minutes. Also, the time from when the cleaning liquid fills the receiving cavity 11 to when the liquid and dirt begin to drain from the wastewater tank 10 is 5 minutes. After the cleaning liquid has soaked the receiving cavity 11 for the predetermined duration, the liquid and dirt in the receiving cavity 11 flow out through the connecting hole 12, flow into the connecting pipe 90, the wastewater tank 60, and the drain 70, and flow out from the drain port 71 to the outside of the cleaning module 100.

[0157] Please see Figure 1 , Figure 3 , Figure 4 , Figure 10 and Figure 11 In some embodiments, the cleaning method for the wastewater tank 10 further includes:

[0158] 02: Close the connection between the sewage tank 10 and the outside world, so that the cleaning liquid is stored in the receiving cavity 11.

[0159] In one implementation method ( Figure 10 As shown, when the wastewater tank 10 needs cleaning, the controller first starts the water pump to pump cleaning liquid into the channel 13, so that the cleaning liquid is sprayed from the outlet 15 onto the inner wall of the wastewater tank 10. The controller then controls the wastewater tank 10 to close its connection with the outside, so that the cleaning liquid can be stored in the receiving cavity 11 and soak the inner wall of the wastewater tank 10. In one example, the controller can control the drain outlet 71 to close its connection with the outside, so that the liquid and dirt in the wastewater tank 10 cannot be discharged outside the cleaning module 100. The cleaning liquid flowing into the receiving cavity 11 from the outlet 15 can be stored in the receiving cavity 11. In another example, the controller can control the connection hole 12 to close its connection with the outside, so that the liquid and dirt in the receiving cavity 11 cannot flow into the wastewater tank 60, and the cleaning liquid flowing into the receiving cavity 11 from the outlet 15 can be stored in the receiving cavity 11.

[0160] In another implementation ( Figure 11 As shown, when the wastewater tank 10 needs cleaning, the controller first controls the wastewater tank 10 to close its connection with the outside. The controller then starts the water pump to pump the cleaning liquid into the channel 13, so that the cleaning liquid is sprayed from the outlet 15 towards the inner wall of the wastewater tank 10. The cleaning liquid can be stored in the wastewater tank 10 and soak the inner wall of the wastewater tank 10. In one example, the controller controls the drain outlet 71 to close its connection with the outside, so that the liquid and dirt in the wastewater tank 10 cannot be discharged outside the cleaning module 100. The cleaning liquid flowing into the receiving cavity 11 from the outlet 15 can be stored in the receiving cavity 11. In another example, the controller controls the connection hole 12 to close its connection with the outside, so that the liquid and dirt in the receiving cavity 11 cannot flow into the wastewater tank 60, and the cleaning liquid flowing into the receiving cavity 11 from the outlet 15 can be stored in the receiving cavity 11.

[0161] Please see Figure 1 , Figure 3 , Figure 4 ,and Figure 12 In some embodiments, 07: the waste in the receiving cavity 11 is discharged to the outside of the wastewater tank 10, including:

[0162] 071: Open the connection between the sewage tank 10 and the outside world, so that the sewage in the receiving cavity 11 can be discharged to the outside of the sewage tank 10.

[0163] After the cleaning liquid has soaked the containment chamber 11 for a predetermined period, the liquid and waste in the containment chamber 11 need to be drained from the wastewater tank 10. At this time, the controller can control the wastewater tank 10 to open its connection with the outside, so that the liquid and waste in the containment chamber 11 can be discharged through the connecting pipe 90 and the wastewater tank 60, and discharged from the drain port 71 to the outside of the cleaning module 100. In one example, the controller controls the drain port 71 to open its connection with the outside, so that the liquid and waste in the wastewater tank 10 can be discharged through the connecting pipe 90 and the wastewater tank 60, and discharged from the drain port 71 to the outside of the cleaning module 100. In another example, the controller controls the connecting hole 12 to open its connection with the outside, so that the liquid and waste in the wastewater tank 10 can be discharged through the connecting pipe 90 and the wastewater tank 60, and discharged from the drain port 71 to the outside of the cleaning module 100.

[0164] Please see Figure 1 , Figure 3 , Figure 4 , Figure 13 and Figure 14 In some embodiments, the cleaning method for the wastewater tank 10 further includes:

[0165] 04: Use the first air pump 50 to extract the gas in the receiving cavity 11, so that the cleaning liquid is stored in the receiving cavity 11.

[0166] In one implementation ( Figure 13 As shown, when the wastewater tank 10 needs cleaning, the controller first starts the water pump to pump the cleaning liquid into the channel 13, so that the cleaning liquid is sprayed from the outlet 15 onto the inner wall of the wastewater tank 10. The controller then starts the first air pump 50, which draws gas from the receiving cavity 11 through the first air hole 14, so that the air pressure inside the receiving cavity 11 is lower than the air pressure outside the receiving cavity 11, so that the cleaning liquid can be stored in the receiving cavity 11 and soak the inner wall of the wastewater tank 10.

[0167] In another implementation ( Figure 14 As shown, when the wastewater tank 10 needs cleaning, the controller first activates the first air pump 50, which draws gas from the containment cavity 11 through the first air port 14. The controller then activates the water pump to pump cleaning liquid into the channel 13, whereby the cleaning liquid is sprayed from the outlet 15 onto the inner wall of the wastewater tank 10. Because the air pressure inside the containment cavity 11 is lower than the air pressure outside the containment cavity 11, the cleaning liquid can be stored in the wastewater tank 10 and soak the inner wall of the wastewater tank 10.

[0168] Please see Figure 1 , Figure 3 , Figure 4 ,and Figure 15 In some embodiments, 07: the waste in the receiving cavity 11 is discharged to the outside of the wastewater tank 10, including:

[0169] 073: Use the first air pump 50 to pump air into the receiving cavity 11, so that the dirt in the receiving cavity 11 is discharged to the outside of the sewage tank 10.

[0170] After the cleaning liquid has soaked the containment cavity 11 for a predetermined period of time, the liquid and dirt in the containment cavity 11 need to be discharged from the wastewater tank 10. At this time, the controller can control the first air pump 50 to switch from extracting gas from the containment cavity 11 to pumping air into the containment cavity 11. The first air pump 50 pumps air into the containment cavity 11 through the first air hole 14 or the second air hole, so that the air pressure inside the containment cavity 11 is greater than the air pressure outside the containment cavity 11. Thus, the liquid and dirt in the containment cavity 11 can be discharged from the cleaning module 100 through the connecting pipe 90 and the wastewater tank 60 and from the drain port 71.

[0171] In other embodiments, the controller may also control the second air pump to pump air into the receiving cavity 11 through the second air hole, so that the air pressure inside the receiving cavity 11 is greater than the air pressure outside the receiving cavity 11, so that the liquid and dirt inside the receiving cavity 11 can pass through the connecting pipe 90 and the sewage tank 60, and be discharged from the drain port 71 to the outside of the cleaning module 100.

[0172] The cleaning method for the wastewater tank 10 according to this application involves providing a channel 13 and multiple outlets 15 at the top of the wastewater tank 10. These outlets 15 are spaced apart circumferentially around the wastewater tank 10. When cleaning is required, external liquid enters the channel 13 and is sprayed from the outlets 15 toward the inner wall of the wastewater tank 10 in a direction away from the center of its cross-section. This allows the external liquid to flush out any contaminants inside the wastewater tank 10. Compared to existing wastewater tanks, the wastewater tank 10 of this application has a self-cleaning function and higher cleaning efficiency. Furthermore, the wastewater tank 10 requires no manual cleaning, resulting in a better user experience.

[0173] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Furthermore, other implementation methods can be derived from the above embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

[0174] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A sewage tank, characterized in that, The sewage tank is provided with a receiving cavity and a connecting hole. The top of the sewage tank is provided with a channel and multiple outlet holes. The outlet holes are spaced apart along the circumference of the sewage tank. The channel has an inlet for external liquid to enter the channel. The outlet holes connect the channel and the receiving cavity. The outlet holes spray liquid toward the inner wall of the sewage tank in a direction away from the center of the cross-section of the sewage tank. The connecting hole is used for the discharge of liquid and waste in the receiving cavity.

2. The sewage tank according to claim 1, characterized in that, Along the flow direction of the liquid in the channel, the outlet includes a first surface and a second surface, the second surface being further away from the inlet than the first surface, the second surface being an inclined surface, and the angle between the second surface and the flow direction of the liquid in the channel being an acute angle.

3. The sewage tank according to claim 2, characterized in that, The first surface is an inclined surface, and the angle between the first surface and the flow direction of the liquid in the channel is an obtuse angle. The outlet is a gradually expanding through-hole.

4. The sewage tank according to claim 1, characterized in that, The top of the sewage tank is provided with a water supply component, the inner cavity of which is the channel; along the direction away from the center of the cross-section of the sewage tank, the water supply component includes a first sidewall and a second sidewall facing away from each other, the second sidewall facing the center of the cross-section of the sewage tank, and the outlet is on the first sidewall.

5. The sewage tank according to claim 4, characterized in that, The water supply component is a protruding structure that extends from the top of the sewage tank into the receiving cavity.

6. The sewage tank according to claim 4, characterized in that, The water supply component is a closed ring structure; or The water supply component is a ring structure that is at least partially open.

7. The sewage tank according to claim 4, characterized in that, The wastewater tank includes a tank body that forms the receiving cavity; the water supply component extends from the inner wall of the tank body into the receiving cavity, the water supply component includes a first sub-part and a second sub-part, the first sub-part is connected to the inner wall of the tank body, the second sub-part is bent and connected to the first sub-part and spaced from the inner wall of the tank body, and the outlet is provided in the second sub-part.

8. The sewage tank according to claim 4, characterized in that, The sewage tank includes a combined cover and a tank body, which together form the receiving cavity; the cover includes a first side and a second side facing away from each other, the first side of the cover faces into the receiving cavity, and the first side of the cover is provided with the water supply component, which is spaced apart from the inner wall of the tank body.

9. The sewage tank according to claim 8, wherein, The first side of the cover is also provided with a separator and a liquid inlet structure. The separator is connected to the inner wall of the cover to divide the first side of the cover into a first area and a second area. The water supply component is located in the first area. The first area and the box together form the receiving cavity. One end of the liquid inlet structure is located in the first area and communicates with the water supply component, and the other end is located in the second area and is provided with the inlet.

10. The sewage tank according to claim 8, characterized in that, The cover includes a first cover and a second cover, which are detachably connected and together form the channel.

11. The sewage tank according to claim 1, characterized in that, The extended shape of the channel includes arc, square arc, C-shape, U-shape, L-shape, semi-circle, annular; and / or The length of the line segment connecting all the outlet holes shall not be less than half the perimeter of the sewage tank.

12. The sewage tank according to claim 1, characterized in that, The wastewater tank is also provided with a first vent, which is connected to the containment cavity. The first vent is used to allow gas to enter and exit the containment cavity. When liquid is sprayed into the containment cavity through the outlet, the first vent allows gas in the containment cavity to flow out.

13. The sewage tank according to claim 12, characterized in that, When the waste in the containment cavity is discharged outside the wastewater tank, the first vent is used to allow gas to enter the containment cavity.

14. The sewage tank according to claim 12, characterized in that, The wastewater tank is also provided with a second vent spaced apart from the first vent, and the second vent is connected to the containment cavity; when the waste in the containment cavity is discharged out of the wastewater tank, the second vent is used to allow gas to enter the containment cavity.

15. A cleaning module, characterized in that, include: ontology; and The sewage tank according to any one of claims 1-11, wherein the sewage tank is disposed on the main body.

16. The cleaning module according to claim 15, characterized in that, The cleaning module also includes a first air pump, which is disposed on the main body. The sewage tank is also provided with a first air hole, one end of which is connected to the receiving cavity and the other end is connected to the first air pump. When the containment cavity stores contaminants, the first air pump is used to extract gas from the containment cavity through the first air hole; After the stored waste is discharged from the containment cavity and liquid is sprayed into the containment cavity through the outlet, the first air pump is used to draw gas from the containment cavity through the first air hole.

17. The cleaning module according to claim 16, characterized in that, When the waste in the containment cavity is discharged from the sewage tank, the first air pump is used to pump air into the containment cavity through the first air hole.

18. The cleaning module according to claim 16, characterized in that, The wastewater tank is also provided with a second air hole spaced apart from the first air hole, and the second air hole is connected to the receiving cavity; when the waste in the receiving cavity is discharged from the wastewater tank, the first air pump is used to pump air into the receiving cavity through the second air hole.

19. The cleaning module according to claim 16, characterized in that, The cleaning module also includes a second air pump, and the sewage tank is also provided with a second air hole spaced apart from the first air hole. One end of the second air hole is connected to the receiving cavity, and the other end is connected to the second air pump. When the sewage in the receiving cavity is discharged from the sewage tank, the second air pump is used to pump air into the receiving cavity through the second air hole.

20. The cleaning module according to claim 15, characterized in that, The cleaning module also includes: A sewage tank is disposed on the main body and is used to collect sewage. A sewage discharge component, wherein the sewage discharge component is connected to the sewage tank, the sewage discharge component is provided with a sewage discharge port, and the sewage discharge port is connected to the sewage tank; and A connecting pipe, one end of which is connected to the sewage tank and the other end of which is connected to the sewage trough.

21. The cleaning module according to claim 20, characterized in that, The connecting pipe includes a connecting part and a bending part. The connecting part is connected to the bending part. One end of the bending part is connected to the sewage tank, and one end of the connecting part is connected to the sewage trough. In the height direction of the sewage tank, the highest point of the bending part is higher than the connection point between the connecting pipe and the sewage tank.

22. The cleaning module according to claim 15, characterized in that, The cleaning module also includes: A clean water tank is disposed on the main body, the clean water tank is connected to the inlet, and is used to store cleaning liquid.

23. A cleaning device, characterized in that, include: body; and The cleaning module according to any one of claims 15-22, wherein the cleaning module is disposed on the body.

24. The cleaning equipment according to claim 23, characterized in that, The cleaning equipment also includes: A clean water tank is disposed on the main body and / or the machine body, the clean water tank is connected to the inlet, and is used to store cleaning liquid.

25. The cleaning equipment according to claim 23, characterized in that, The cleaning equipment includes tracked cleaning robots or roller cleaning robots.

26. A base station, characterized in that, The base station is used for maintaining the cleaning equipment as described in any one of claims 23-25.

27. A cleaning system, characterized in that, The cleaning system includes cleaning equipment and a base station, wherein the base station is used to maintain the cleaning equipment as described in any one of claims 23-25; The cleaning equipment includes: fuselage; and The cleaning module according to any one of claims 15-22, wherein the cleaning module is disposed on the body.

28. The cleaning system according to claim 27, characterized in that, The cleaning system also includes: A clean water tank is disposed in at least one of the main body, the fuselage, and the base station. The clean water tank is connected to the inlet and is used to store cleaning liquid.

29. The cleaning system according to claim 28, characterized in that, The base station is equipped with a third air pump; when the waste in the containment cavity is discharged from the sewage tank, the third air pump is used to pump air into the containment cavity through the inlet or the second air hole.

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