Wastewater tank, cleaning module, cleaning device, base station, cleaning system, and wastewater tank cleaning method

Abstract

A wastewater tank (10), which is provided with an accommodation cavity (11). A top portion of the wastewater tank (10) is provided with a channel (13) and a plurality of outlet holes (15). The outlet holes (15) are arranged at intervals in the circumferential direction of the wastewater tank (10). The channel (13) is provided with an inlet (131). The inlet (131) is used to allow an external fluid to enter the channel (13). The outlet holes (15) connect the channel (13) and the accommodation cavity (11). The outlet holes (15) spray liquid towards an inner side wall of the wastewater tank (10) in a direction away from the center of the cross section of the wastewater tank (10).

Description

Sewage tank, cleaning module, cleaning equipment, base station, cleaning system and sewage tank cleaning method Technical Field

[0001] The present application relates to the field of cleaning equipment, and in particular to a sewage tank, a cleaning module, a cleaning equipment, a base station, a cleaning system, and a method for cleaning a sewage tank. Background Art

[0002] After cleaning the surface, the mopping and wiping parts of a cleaning robot may carry dirty water. If the mopping and wiping parts continue to clean the surface, the cleaning effect will be poor. Therefore, cleaning robots can be equipped with a dirty water tank to recover the dirty water from the mopping and wiping parts, thereby improving the cleaning effect of the mopping and wiping parts on the surface. However, the dirty water tanks of current cleaning robots usually require manual cleaning, resulting in low cleaning efficiency.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a sewage tank, a cleaning module, a cleaning device, a base station, a cleaning system and a sewage tank cleaning method, which are at least used to solve the problem that the sewage tank of the current cleaning robot usually requires manual cleaning and has low cleaning efficiency.

[0005] In a first aspect, an embodiment of the present application provides a sewage tank, which is provided with a accommodating cavity, a channel and a plurality of outlet holes being provided on the top of the sewage tank, the outlet holes being arranged at intervals along the circumference of the sewage tank, the channel being provided with an inlet for allowing external fluid to enter the channel, and the outlet holes spraying liquid toward the inner side wall of the sewage tank in a direction away from the center of the cross section of the sewage tank.

[0006] In the second aspect, an embodiment of the present application provides a cleaning module, which includes a main body and a sewage tank, the sewage tank is provided with a accommodating cavity, the top of the sewage tank is provided with a channel and a plurality of outlet holes, the outlet holes are arranged at intervals along the circumference of the sewage tank, the channel is provided with an inlet, the inlet is used to allow 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, and the sewage tank is arranged on the main body.

[0007] In a third aspect, an embodiment of the present application further provides a cleaning device, which includes a body and a cleaning module, wherein the cleaning module includes a main body and a sewage tank, the sewage tank is provided with a accommodating cavity, and the top of the sewage tank is provided with a channel and a plurality of outlet holes, the outlet holes are arranged at intervals along the circumference of the sewage tank, the channel is provided with an inlet, the inlet is used to allow external fluid to enter the channel, and the outlet holes spray liquid toward the inner side wall of the sewage tank in a direction away from the center of the cross section of the sewage tank, the sewage tank is arranged on the main body, and the cleaning module is arranged on the body.

[0008] In a fourth aspect, an embodiment of the present application further provides a base station, which is used to maintain the cleaning equipment.

[0009] In a fifth aspect, embodiments of the present application further provide a cleaning system, comprising a cleaning device and a base station, the base station being used to maintain the cleaning device; the cleaning device comprising a body and the cleaning module, the cleaning module being disposed on the body. The cleaning module comprises a main body and a sewage tank, the sewage tank being provided with a accommodating cavity, the top of the sewage tank being provided with a channel and a plurality of outlet holes, the outlet holes being spaced apart along the circumference of the sewage tank, the channel being provided with an inlet, the inlet being used to allow external fluid to enter the channel, the outlet holes spraying liquid toward the inner sidewall of the sewage tank in a direction away from the center of the cross section of the sewage tank, and the sewage tank being disposed on the main body.

[0010] In a sixth aspect, embodiments of the present application further provide a method for cleaning a sewage tank, the method being applied to the sewage tank, wherein the sewage tank is provided with a holding chamber, a channel and a plurality of outlet holes disposed at a top thereof, the outlet holes being spaced apart along the circumference of the sewage tank, the channel being provided with an inlet for admitting an external fluid into the channel, and the outlet holes spraying liquid toward the inner sidewall of the sewage tank in a direction away from the cross-sectional center of the sewage tank. The cleaning method comprises: allowing a cleaning liquid to enter the channel from the inlet and spraying the liquid from the outlet holes onto the inner sidewall of the sewage tank; allowing the cleaning liquid to flow down along the inner sidewall of the holding chamber and be stored within the holding chamber, soaking the holding chamber with the cleaning liquid for a predetermined period of time; and discharging dirt from the holding chamber to the exterior of the sewage tank.

[0011] The sewage tank, cleaning module, cleaning equipment, base station, cleaning system, and sewage tank cleaning method of the embodiments of the present application are characterized by providing a channel and multiple outlet holes at the top of the sewage tank, with the outlet holes spaced circumferentially along the sewage tank. When the sewage tank needs to be cleaned, external liquid enters the channel and is sprayed from the outlet holes toward the inner sidewall of the sewage tank in a direction away from the center of the sewage tank's cross section. Dirt inside the sewage tank can be flushed out of the sewage tank by the external liquid. Compared to existing sewage tanks, the sewage tank of the present application can achieve a self-cleaning function, has higher cleaning efficiency, and does not require manual cleaning, providing a better user experience.

[0012] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] FIG1 is a perspective schematic diagram of a cleaning module according to certain embodiments of the present application;

[0015] FIG2 is a perspective exploded schematic diagram of the cleaning module of FIG1 ;

[0016] FIG3 is a perspective schematic diagram of a cover body in a sewage tank according to some embodiments of the present application;

[0017] FIG4 is a perspective schematic diagram of the cover body of FIG3 from another perspective;

[0018] FIG5 is a structural schematic diagram of the flow direction of liquid in the channel of the cover;

[0019] FIG6 is a schematic structural diagram of a sewage tank according to another embodiment of the present application;

[0020] FIG7 is a perspective schematic diagram of a cleaning device according to certain embodiments of the present application;

[0021] FIG8 is a schematic structural diagram of a base station and a cleaning system according to certain embodiments of the present application;

[0022] FIG9 is a schematic flow chart of a method for cleaning a sewage tank according to certain embodiments of the present application;

[0023] FIG10 is a schematic flow chart of a method for cleaning a sewage tank according to certain embodiments of the present application;

[0024] FIG11 is a schematic flow chart of a method for cleaning a sewage tank according to certain embodiments of the present application;

[0025] FIG12 is a schematic flow chart of a method for cleaning a sewage tank according to certain embodiments of the present application;

[0026] FIG13 is a schematic flow chart of a method for cleaning a sewage tank according to certain embodiments of the present application;

[0027] FIG14 is a schematic flow chart of a method for cleaning a sewage tank according to certain embodiments of the present application;

[0028] FIG. 15 is a flow chart of a method for cleaning a sewage tank according to certain embodiments of the present application. DETAILED DESCRIPTION

[0029] The embodiments of the present application are described in detail below. Implementations of the embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0030] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] After the mopping and wiping parts of the cleaning robot clean the surface to be cleaned, there will be sewage on the mopping and wiping parts. When the mopping and wiping parts with sewage continue to clean the surface to be cleaned, the cleaning effect of the mopping and wiping parts is poor. Therefore, the cleaning robot may be provided with a sewage tank, which is used to recycle the sewage on the mopping and wiping parts, thereby improving the cleaning effect of the mopping and wiping parts on the surface to be cleaned. However, the sewage tanks of current cleaning robots usually need to be cleaned manually, and the cleaning efficiency is low. To solve this problem, the present application provides a sewage tank 10 (shown in Figure 1), a cleaning module 100 (shown in Figure 1), a cleaning device 1000 (shown in Figure 7), a base station 3000 (shown in Figure 8), a cleaning system 10000 (shown in Figure 8) and a method for cleaning a sewage tank.

[0032] Please refer to Figures 1 to 4. In a first aspect, an embodiment of the present application provides a sewage tank 10. The sewage tank 10 is provided with a accommodating chamber 11. A channel 13 and a plurality of outlet holes 15 are provided on the top of the sewage tank 10. The outlet holes 15 are arranged at intervals along the circumference of the sewage tank 10. The channel 13 has an inlet 131, which is used to allow external liquid to enter the channel 13. The outlet holes 15 connect the channel 13 and the accommodating chamber 11. The outlet holes 15 spray liquid toward the inner side wall of the sewage tank 10 in a direction away from the center of the cross section of the sewage tank 10.

[0033] Specifically, please refer to Figure 7. The cleaning device 1000 is a device for cleaning the surface to be cleaned. The surface to be cleaned can be, but is not limited to, a floor, a marble surface, or a glass surface. This application is described by taking the floor as an example. The cleaning device 1000 can be a sweeping robot, a mopping robot, or a sweeping and mopping robot. The sweeping robot can be used to clean the surface to be cleaned, the mopping robot can be used to wipe and clean the surface to be cleaned, and the sweeping and mopping robot can integrate the functions of the above two robots, that is, the sweeping and mopping robot can be used to sweep the surface to be cleaned, and can also be used to wipe and clean the surface to be cleaned. The cleaning device 1000 of this application is described by taking the sweeping and mopping robot as an example.

[0034] In certain embodiments, the cleaning device 1000 may include a tracked cleaning robot or a drum-type cleaning robot. If the cleaning device 1000 is a tracked cleaning robot, the wiping member of the cleaning device 1000 is a tracked wiping member. If the cleaning device 1000 is a drum-type cleaning robot, the wiping member of the cleaning device 1000 is a drum-type wiping member. Both tracked and drum-type wiping members can clean the surface to be cleaned by rotating. Compared to cleaning devices that use traditional disc-type or other wiping members, tracked and drum-type wiping members roll, resulting in a larger contact area between the wiping member and the surface to be cleaned. At the same time, garbage on the wiping member is continuously collected onto the cleaning device, and the wiping member remains relatively clean. Therefore, the cleaning device 1000 has a better cleaning effect on the surface to be cleaned. This application uses the cleaning device 1000 as an example of a tracked cleaning robot.

[0035] Cleaning device 1000 includes a cleaning module 100, which is used to clean a surface to be cleaned. A wiping member is mounted on cleaning module 100. When the surface to be cleaned is to be cleaned, cleaning module 100 can wipe the surface. If the wiping member is a crawler-type wiping member, cleaning module 100 can clean the wiping member as it rotates to clean the surface, thereby maintaining a clean state. Cleaning module 100 effectively cleans the surface to be cleaned.

[0036] Referring to Figures 1 and 2 , when the cleaning module 100 is cleaning the mopping member, the scraping member of the cleaning module 100 scrapes away dirt from the mopping member. The sewage tank 10 is used to store dirt scraped off by the scraping member to prevent it from falling onto the surface being cleaned. When the sewage tank 10 is installed on the cleaning module 100, it can recover and store dirt removed by the scraping member from the mopping member, thereby keeping the mopping member relatively clean and improving the cleaning effect of the cleaning module 100 on the surface being cleaned. This eliminates the need for the cleaning module 100 to frequently clean the mopping member at the base station 3000, resulting in a more efficient cleaning of the surface being cleaned. The dirt may include liquid sewage and solid dirt. The sewage tank 10 may be made of, but is not limited to, metal or plastic. Examples of metal materials include, but are not limited to, aluminum, iron, steel, or aluminum alloys. Metallic sewage tank 10 offers increased strength and a longer 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 light, 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.

[0037] Referring to Figures 3 and 4 , the accommodating chamber 11 is used to store dirt scraped off by the scraping member by the mopping member. The accommodating chamber 11 is also used to store external liquid entering through the inlet 131. The inlet 131 is used to allow external liquid to enter the channel 13. The inlet 131 can also be used to allow gas to enter the channel 13. When the sewage tank 10 needs to be cleaned, external liquid enters the channel 13 through the inlet 131. The liquid here includes, but is not limited to, clean water, cleaning liquid, or a mixed liquid containing a cleaning liquid. When the liquid entering the accommodating chamber 11 through the inlet 131 is clean water, the cost of cleaning the sewage tank 10 is low. When the liquid entering the accommodating chamber 11 through the inlet 131 is cleaning liquid or a mixed liquid containing a cleaning liquid, the mixed liquid containing a cleaning liquid can further dissolve stubborn stains on the inner wall of the sewage tank 10, resulting in a better cleaning effect for the sewage tank 10.

[0038] Referring to Figures 1 and 2 , the sewage tank 10 may also be provided with a connection hole 12 for draining liquid and dirt from the tank 10 out of the tank 10. The connection hole 12 may be located at the bottom of the tank 10 in the height direction H. This allows the liquid and dirt in the tank 10 to drain smoothly through the connection hole 12 out of the tank 10 by gravity or pressure, effectively draining almost all of the liquid and dirt from the tank 10. (If the connection hole 12 were higher than the bottom of the tank, liquid and dirt below the connection hole 12 would not be able to drain from the tank 10.) When dirt (here, dirt scraped from the mopping member) in the tank 10 is drained through the connection hole 12, some dirt may remain in the tank 10. To clean the tank 10, liquid enters the channel 13 through the inlet 131 and is sprayed into the accommodating chamber 11 through the multiple outlet holes 15. The liquid can carry the dirt in the receiving chamber 11 and flow out of the connecting hole 12 to the outside of the sewage tank 10, thereby keeping the sewage tank 10 relatively clean. The sewage tank 10 can achieve a self-cleaning function by spraying liquid, and the sewage tank 10 does not need to be cleaned manually, which can effectively free the user's hands and provide a better user experience.

[0039] 3 and 4 , a channel 13 is provided at the top of the sewage tank 10 in the height direction H of the sewage tank 10. The channel 13 allows liquid to enter the channel and be sprayed from the outlet 15 toward the inner sidewall of the sewage tank 10 in a direction away from the center of the sewage tank's cross section.

[0040] In some embodiments, the channel 13 extends in an arc, square arc, C-shape, U-shape, L-shape, semicircle, or annular shape. Liquid entering the channel 13 is sprayed from the outlet holes 15 toward the inner wall of the sewage tank 10 in a direction away from the center of the sewage tank's cross section. If the channel 13 extends in an annular shape, the channel 13 may be a closed structure. In this case, the multiple outlet holes 15 may be distributed at any location around the circumference of the sewage tank 10. After the liquid is sprayed into the receiving chamber 11 through the multiple outlet holes 15, it can flow to various locations on the inner wall of the sewage tank 10, thereby effectively cleaning the sewage tank 10. If the channel 13 extends in an arc, square arc, C-shape, U-shape, L-shape, or semicircle, the channel 13 may be an open structure. In this case, the multiple outlet holes 15 may be evenly or unevenly distributed around the circumference of the sewage tank 10 and spray the liquid toward the inner wall of the sewage tank 10.

[0041] In some embodiments, the length of the line segment connecting all the outlet holes 15 is not less than half of the circumference of the sewage tank 10, for example, it can be 1 / 2, 2 / 3, 3 / 4 of the circumference, or covers the outer circumference of the sewage tank 10. The outlet holes 15 cover a large range and the sprayed liquid covers a large area. The multiple outlet holes 15 are evenly or unevenly distributed around the circumference of the sewage tank 10 and spray the liquid toward the inner wall of the sewage tank 10.

[0042] When external liquid enters the channel 13 through the inlet 131, the outlet 15 allows the external liquid to enter the receiving chamber 11 and spray toward the inner sidewall of the sewage tank 10. When external gas enters the channel 13 through the inlet 131, the outlet 15 allows the external gas to enter the receiving chamber 11. In the height direction H of the sewage tank 10, if the outlet 15 is located at the top of the sewage tank 10, liquid sprayed from the outlet 15 into the receiving chamber 11 will spray toward the inner sidewall of the top of the sewage tank 10 in a direction away from the cross-sectional center of the sewage tank 10. Due to gravity, the liquid will flow downward along the inner sidewall of the sewage tank 10, carrying dirt on the inner sidewall of the sewage tank 10 with it and flowing out of the sewage tank 10 through the connecting hole 12, effectively cleaning the sewage tank 10. Since the multiple outlet holes 15 are arranged along the circumference of the sewage tank 10, the outlet holes can spray in all directions to the inner side wall of the sewage tank 10, thereby cleaning a wider range of the sewage tank. In addition, when the liquid in the outlet holes 15 is sprayed toward the inner side wall of the sewage tank 10 in a direction away from the center of the cross section of the sewage tank 10, the distance between the liquid sprayed from the outlet holes 15 and the inner side wall of the sewage tank 10 is short, and the splashing force of the liquid sprayed onto the inner side wall of the sewage tank 10 is large. The liquid can effectively rinse the dirt on the inner side wall of the sewage tank 10, and the liquid has a better cleaning effect on the inner side wall of the sewage tank 10. Spraying liquid through multiple outlet holes 15 can improve the cleaning efficiency of the sewage tank 10.

[0043] The number of outlet holes 15 can be, but is not limited to, two, three, four, five, or more. If there are multiple outlet holes 15, they are spaced apart around the circumference of the sewage tank 10. When liquid is simultaneously sprayed from the multiple outlet holes 15 into the accommodating chamber 11, the liquid can flow into various locations on the inner sidewall of the sewage tank 10, thereby carrying dirt out of the sewage tank 10 and improving the cleaning effect of the sewage tank 10.

[0044] The sewage tank 10 of the present embodiment is provided with a channel 13 and multiple outlet holes 15 at the top of the sewage tank 10. The multiple outlet holes 15 are spaced apart along the circumference of the sewage tank 10. When the sewage tank 10 needs to be cleaned, external liquid enters the channel 13 and is sprayed from the outlet holes 15 toward the inner sidewall of the sewage tank 10 in a direction away from the cross-sectional center of the sewage tank 10. Dirt inside the sewage tank 10 can be flushed out of the sewage tank 10 by the external liquid. Compared to the current sewage tank 10, the sewage tank 10 of the present application can achieve a self-cleaning function. The inner sidewall of the sewage tank is sprayed with liquid, covering a large cleaning area. The sewage tank 10 has high cleaning efficiency and does not require manual cleaning, providing a better user experience.

[0045] The sewage tank 10 will be further described below with reference to the accompanying drawings.

[0046] Referring to Figures 3 and 4, in some embodiments, a water supply member 16 is provided on the top of the sewage tank 10. The inner cavity of the water supply member 16 is a channel 13. Along the direction away from the cross-sectional center of the sewage tank 10, the protruding structure 16 includes a first side wall 161 and a second side wall 163 opposite to each other, and the second side wall 163 faces the cross-sectional center of the sewage tank 10. The outlet 15 is on the first side wall 161.

[0047] Specifically, when the sewage tank 10 needs to be cleaned, the water supply member 16 is used to allow external liquid to enter the sewage tank 10 and spray toward the inner wall of the sewage tank 10. The outlet holes 15 are formed on the water supply member 16. The multiple outlet holes 15 can be evenly or unevenly distributed on the water supply member 16. Preferably, the multiple outlet holes 15 are evenly distributed on the water supply member 16. This allows the liquid sprayed from the outlet holes 15 to flow into various locations on the inner wall of the sewage tank 10, effectively cleaning the sewage tank 10.

[0048] When the outlet holes 15 are formed in the first sidewall 161, the openings of the multiple outlet holes 15 all face the inner wall of the sewage tank 10. When liquid is sprayed from the outlet holes 15 into the accommodating chamber 11, the liquid can be directly sprayed onto the inner wall of the sewage tank 10. Furthermore, the liquid sprayed directly onto the inner wall of the sewage tank 10 has a certain splashing force, which effectively flushes away dirt from the inner wall of the sewage tank 10 and prevents dirt from remaining on the inner wall of the sewage tank 10.

[0049] Referring to Figures 4 and 5 , in certain embodiments, along the direction of liquid flow within channel 13, outlet hole 15 includes a first surface and a second surface. The second surface is further away from inlet 131 than the first surface, is an inclined surface, and forms an acute angle with the direction of liquid flow within channel 13. Since the channel 13 of the present application has only one inlet 131, when inlet 131 is located in the middle of channel 13 (excluding the two ends), liquid entering channel 13 from inlet 131 can flow into channel 13 through two streams. The second surface of outlet hole 15, further away from inlet 131, is an inclined surface. As liquid flows from channel 13 into outlet hole 15, it has the inertia to flow forward, allowing it to flow out along the inclined surface of outlet hole 15 and spray onto the inner wall of sewage tank 10. When the liquid is sprayed obliquely onto the inner wall of the sewage tank 10, it loses less kinetic energy during its flow. Consequently, the liquid ejected from the outlet holes 15 and splashing onto the inner wall of the sewage tank 10 has a greater force, effectively flushing dirt from the inner wall. Furthermore, the liquid ejected from the multiple outlet holes 15 can flow across nearly every location on the inner wall of the sewage tank 10, effectively cleaning the sewage tank 10. If the second surface of the outlet holes 15 is perpendicular to the direction of liquid flow within the channel 13, the liquid in the channel 13 flows into the outlet holes 15, causing a significant change in its flow direction and resulting in a greater loss of kinetic energy. Consequently, the liquid ejected from the outlet holes 15 onto the inner wall of the sewage tank 10 has a smaller force, resulting in a less effective flushing effect on the inner wall of the sewage tank 10 and a poorer cleaning effect.

[0050] Referring to Figures 4 and 5 , in one embodiment, the first surface of the outlet hole 15 is also inclined, with the first surface forming an obtuse angle with the direction of liquid flow within the channel 13. The outlet hole 15 is a gradually diverging through-hole. In this case, the liquid loses less kinetic energy during flow, resulting in a greater force when the liquid ejected from the outlet hole 15 and splashes onto the inner wall of the sewage tank 10. The liquid splashing onto the inner wall of the sewage tank 10 effectively flushes away dirt from the inner wall of the sewage tank 10. Liquid ejected from the multiple outlet holes 15 can flow through nearly every location on the inner wall of the sewage tank 10, effectively cleaning the sewage tank 10. Furthermore, when the outlet holes 15 are gradually diverging through-holes, the processing of the water supply component 16 is simpler, improving processing efficiency.

[0051] In one embodiment, the water supply member 16 is a protruding structure that protrudes from the top of the sewage tank 10 into the accommodating cavity 11. The inner cavity of the protruding structure forms the channel 13. The protruding structure protrudes into the accommodating cavity 11, allowing the opening of the outlet hole 15 to face the inner sidewall of the sewage tank 10. Liquid in the channel 13 is sprayed from the outlet hole 15 toward the inner sidewall of the sewage tank 10 in a direction away from the cross-sectional center of the sewage tank 10, effectively cleaning the sewage tank 10.

[0052] Referring to Figures 3 and 4 , in some embodiments, the water supply member may be a closed annular structure. In this case, the channel 13 is a closed channel 13. When multiple outlet holes 15 are evenly distributed on the water supply member, the liquid sprayed from the multiple outlet holes 15 toward the inner sidewall of the sewage tank 10 can flow to various locations on the inner sidewall of the sewage tank 10. The liquid can carry dirt from various locations on the inner sidewall of the sewage tank 10 and flow out of the sewage tank 10 through the connecting hole 12, thereby improving the cleaning effect of the sewage tank 10. In other embodiments, the water supply member is an annular structure that can be at least partially opened. In this case, the channel 13 is a non-closed channel 13. When the water supply member is an annular structure that is at least partially open, the open position of the water supply member can be used to install other components, and the structure of the top of the sewage tank 10 is more compact.

[0053] Please refer to Figure 6. In some embodiments, the sewage tank 10 includes a box body 17, which encloses a accommodating chamber 11; the water supply component 16 extends from the inner wall of the box body 17 toward the accommodating chamber 11, and the water supply component 16 includes a first sub-portion 165 and a second sub-portion 167. The first sub-portion 165 is connected to the inner wall of the box body 17, and the second sub-portion 167 is bent and connected to the first sub-portion 165 and spaced from the inner wall of the box body 17. The outlet 15 is provided in the second sub-portion 167.

[0054] Specifically, when the sewage tank 10 only includes the housing 17, the structure of the sewage tank 10 is relatively simple, and the processing of the sewage tank 10 is relatively simple. In this case, the accommodating chamber 11 can be an open or closed cavity. The first sub-section 165 can be connected to the inner sidewall of the housing 17 in the circumferential direction of the housing 17, and the first sub-section 165 can have an annular structure. The second sub-section 167 is connected to the first sub-section 165, and the second sub-sections 167 can also have an annular structure. The annular shape of the first sub-section 165 can be the same as the cross-sectional shape of the housing 17, so that the first sub-section 165 can be firmly connected to the inner sidewall of the housing 17. The inner cavity of the first sub-section 165 forms the first sub-channel 13, and the inner cavity of the second sub-section 167 forms the second sub-channel 13. The first sub-channel 13 and the second sub-channel 13 are connected and together form the channel 13. When the sewage tank 10 needs to be cleaned, external liquid flows into the first sub-channel 13 from the inlet 131 , flows through the second sub-channel 13 , and is sprayed toward the inner wall of the sewage tank 10 from the outlet 15 .

[0055] The angle between the first sub-portion 165 and the second sub-portion 167 can range from 0° to 180°. Preferably, the angle between the first sub-portion 165 and the second sub-portion 167 is 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, which effectively flushes away dirt from the inner wall of the sewage tank 10 and prevents dirt from remaining on the inner wall.

[0056] Continuing with Figure 6, the first sub-section 165 can be connected to the inner sidewall of the top of the tank body 17, and the second sub-section 167 is connected to the first sub-section 165. In the height direction H of the sewage tank 10, the second sub-section 167 extends from the top of the tank body 17 to the bottom of the tank body 17. In one embodiment, the length of the second sub-section 167 can be relatively short. For example, the length of the second sub-section 167 in the height direction H of the sewage tank 10 can be less than half the height of the tank body 17. In this case, less material is required for the second sub-section 167, saving material costs. Multiple outlet holes 15 can be distributed anywhere in the second sub-section 167 in the height direction H of the sewage tank 10. When liquid is sprayed from the outlet holes 15 onto the inner sidewall of the top of the sewage tank 10, gravity causes the liquid to flow downward from the top of the tank body 17, carrying dirt from the inner sidewall of the sewage tank 10 and out of the sewage tank 10 through the connection hole 12, thereby keeping the sewage tank 10 relatively clean. In another embodiment, the second subsection 167 can be longer. For example, in the height direction H of the sewage tank 10, the length of the second subsection 167 can be greater than half the height of the tank body 17. The multiple outlet holes 15 can be distributed anywhere in the second subsection 167 in the height direction H of the sewage tank 10. In this case, the liquid sprayed from the outlet holes 15 can be sprayed onto more locations on the inner sidewall of the sewage tank 10 in the height direction H of the sewage tank 10, covering a larger area of ​​the inner sidewall of the sewage tank 10 by the liquid, thereby improving the cleaning effect of the sewage tank 10.

[0057] The cross-sectional shape of the second sub-section 167 can be, but is not limited to, circular, elliptical, triangular, quadrilateral, or other polygonal shapes. If the cross-sectional shape of the second sub-section 167 is circular, in one embodiment, the multiple outlet holes 15 can be distributed at any location along the circumference of the second sub-section 167. In this case, the liquid flowing out of the multiple outlet holes 15 can be sprayed onto any location on the inner sidewall of the sewage tank 10, carrying waste from the inner sidewall with it and out of the sewage tank 10, effectively cleaning the sewage tank 10. In another embodiment, the multiple outlet holes 15 can be distributed on a side of the second sub-section 167 away from the center of the cross-sectional area of ​​the sewage tank 10. In this case, the manufacturing of the second sub-section 167 is relatively simple. The liquid flowing out of the outlet holes 15 can be sprayed toward the inner sidewall of the sewage tank 10, away from the center of the cross-sectional area of ​​the sewage tank 10, to flush waste from that location out of the sewage tank 10.

[0058] If the second subsection 167 has a quadrilateral cross-section, in one embodiment, the multiple outlet holes 15 can be distributed at any location on the four sides of the second subsection 167. In this case, the liquid flowing out of the multiple outlet holes 15 can be sprayed onto any location on the inner sidewall of the sewage tank 10, carrying waste from the inner sidewall with it and out of the sewage tank 10, effectively cleaning the sewage tank 10. In another embodiment, the multiple outlet holes 15 can be distributed on a side of the second subsection 167 away from the center of the cross-section of the sewage tank 10. In this case, the manufacturing of the second subsection 167 is relatively simple. The liquid flowing out of the outlet holes 15 can be sprayed toward the inner sidewall of the sewage tank 10 away from the center of the cross-section of the sewage tank 10, flushing out waste from that location.

[0059] Referring to Figures 1 to 4, in other embodiments, the sewage tank 10 includes a cover body 19 and a box body 17 combined together, and the cover body 19 and the box body 17 together form a accommodating chamber 11; the cover body 19 includes a first side 191 and a second side 193 opposite to each other, and the first side 191 of the cover body 19 faces the accommodating chamber 11. The first side 191 of the cover body 19 is provided with a water supply member 16, and the water supply member 16 is spaced from the inner side wall of the box body 17.

[0060] Specifically, the cover 19 is removably or non-removably connected to the housing 17. Removable connection methods include, but are not limited to, threaded connections, screw connections, or snap connections, while non-removable connection methods include, but are not limited to, welding, gluing, interference fit, ultrasonic welding, etc. Preferably, the cover 19 and housing 17 are removably connected. This allows for easy removal and repair of the cover 19 or housing 17 in the event of damage.

[0061] When the accommodating chamber 11 is enclosed by the cover 19 and the housing 17, the accommodating chamber 11 can be a closed chamber. In this case, when the sewage tank 10 moves or rotates, dirt or liquid within the accommodating chamber 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 member 16 on the first side 191 of the cover 19 is an annular structure, and the shape of this annular structure can be similar to the cross-section of the sewage tank 10. When multiple outlet holes 15 are distributed on the water supply member 16, liquid can be sprayed from the multiple outlet holes 15 toward various locations on the inner wall of the sewage tank 10, effectively cleaning the sewage tank 10.

[0062] Please refer to Figures 3 and 4. Furthermore, in some embodiments, the first side 191 of the cover body 19 is also provided with a partition 195 and a liquid inlet structure 197. The partition 195 is connected to the inner wall of the cover body 19 to divide the first side 191 of the cover body 19 into a first area 1911 and a second area 1913. The water supply component 16 is located in the first area 1911. The first area 1911 and the box body 17 together form a accommodating cavity 11. One end of the liquid inlet structure 197 is located in the first area 1911 and is connected to the water supply component 16, and the other end is located in the second area 1913 and is provided with an inlet 131.

[0063] Among them, the liquid inlet structure 197 is used to guide external liquid into the water supply part 16. The inner cavity of the liquid inlet structure 197 and the inner cavity of the water supply part 16 are connected, and can together form a channel 13. The inlet 131 of the channel 13 is opened in the liquid inlet structure 197, and the inlet 131 is used to allow external liquid to enter the channel 13. The liquid inlet structure 197 and the water supply part 16 can be an integral structure or a separate structure. In the case where the liquid inlet structure 197 and the water supply part 16 are an integral structure, the liquid inlet structure 197 and the convex water supply part 16 can be integrally formed. In the case where the liquid inlet structure 197 and the water supply part 16 are separate structures, the liquid inlet structure 197 and the water supply part 16 are detachably or non-detachably connected.

[0064] The divider 195 is used to divide the first side 191 of the cover 19 into a first area 1911 and a second area 1913, separating the first area 1911 from the second area 1913. The accommodating chamber 11 formed by the first area 1911 and the housing 17 can be a closed chamber, thereby preventing liquid and dirt from flowing out from between the cover 19 and the housing 17. The liquid inlet structure 197 located in the second area 1913 can communicate with other external components to guide external liquid to the water supply member 16. The divider 195 and the sidewall of the cover 19 can be integral or separate. If the divider 195 and the sidewall of the cover 19 are integral, the divider 195 and the sidewall of the cover 19 can be integrally formed. If the divider 195 and the sidewall of the cover 19 are separate, the divider 195 and the sidewall of the cover 19 can be detachably or non-detachably connected. The material of the partition 195 may be the same as the material of the side wall of the cover 19 , or the material of the partition 195 may be different from the material of the side wall of the cover 19 .

[0065] Please refer to FIG. 3 . Furthermore, in some embodiments, the cover 19 includes a first cover 198 and a second cover 199 . The first cover 198 and the second cover 199 are detachably connected and together enclose the channel 13 .

[0066] The first cover 198 is connected to the second cover 199, which is in turn 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 chamber 11. The removable mounting methods between the first cover 198 and the second cover 199 include, but are not limited to, threaded connections, screw connections, or snap-on connections.

[0067] The shape of the first cover 198 can be substantially the same as that of the channel 13, and the width of the first cover 198 can be 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 required for the first cover 198, saving material costs. When the first cover 198 and the second cover 199 are detachably connected, the channel 13 is easier to clean. After the sewage 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 toward the inner wall of the sewage tank 10 through the outlet 15, the liquid will not carry dirt from the channel 13 into the sewage tank 10, effectively cleaning the sewage tank 10.

[0068] Please refer to FIG. 1 and FIG. 2 . In a second aspect, an embodiment of the present application provides a cleaning module 100 . The cleaning module 100 includes a main body 30 and the sewage tank 10 of the above embodiment. The sewage tank 10 is disposed on the main body 30 .

[0069] The sewage tank 10 is removably or non-removably connected to the main body 30. Removable installation methods include, but are not limited to, threaded, screwed, or snap-fit ​​connections, while non-removable installation methods include, but are not limited to, welding, gluing, or interference fit. If the sewage tank 10 is removably connected to the main body 30, it can be easily removed from the main body 30 for repair in the event of damage. If the sewage tank 10 is non-removably connected to the main body 30, the sewage tank 10 and the main body 30 can be integrally formed, simplifying the manufacturing steps of the cleaning module 100.

[0070] Please refer to Figures 1 and 2. In some embodiments, the cleaning module 100 also includes a first air pump 50, which is arranged on the main body 30. The sewage tank 10 is also provided with a first air hole 14. One end of the first air hole 14 is connected to the accommodating chamber 11, and the other end is connected to the first air pump 50. When the accommodating chamber 11 stores waste, the first air pump 50 is used to extract the gas in the accommodating chamber 11 through the first air hole 14. After the stored waste is discharged from the accommodating chamber 11 and the outlet 15 sprays liquid into the accommodating chamber 11, the first air pump 50 is used to extract the gas in the accommodating chamber 11 through the first air hole 14.

[0071] Specifically, the first air hole 14 is connected to the first air pump 50 and is used to allow air within the receiving chamber 11 to flow into the first air pump 50. When the cleaning module 100 cleans the surface to be cleaned, dirt from the wiping member is scraped off by the scraping member. The scraped dirt enters the sewage tank 10 and is stored therein. Because the receiving chamber 11 is a closed cavity, when the first air pump 50 extracts air from the receiving chamber 11 through the first air hole 14, a negative pressure is achieved within the receiving chamber 11. The air pressure within the receiving chamber 11 is lower than the air pressure outside the receiving chamber 11, and dirt scraped off by the scraping member is squeezed into the receiving chamber 11 and stored there. If dirt enters the receiving chamber 11, the first air pump 50 can stop extracting air from the receiving chamber 11. This maintains a negative pressure within the receiving chamber 11, allowing dirt to be stably stored there, thereby preventing dirt from flowing from the receiving chamber 11 to the surface to be cleaned.

[0072] When the waste in the sewage tank 10 is discharged to the designated location, the sewage tank 10 needs to be cleaned. External liquid enters the channel 13 from the inlet 131 and is sprayed toward the inner wall of the sewage tank 10 from the outlet 15. At this time, the first air pump 50 extracts the gas in the accommodating chamber 11 through the first air hole 14, and the interior of the accommodating chamber 11 is at a negative pressure. The air pressure inside the accommodating chamber 11 is lower than the air pressure outside the accommodating chamber 11. The liquid that enters the accommodating chamber 11 has difficulty flowing out of the sewage tank 10, and the liquid will be stored in the accommodating chamber 11. The liquid in the channel 13 is continuously sprayed toward the inner wall of the sewage tank 10 from the outlet 15, thereby continuously increasing the liquid stored in the accommodating chamber 11. When the accommodating chamber 11 is filled with liquid, the external liquid stops supplying water to the channel 13, and the liquid stops spraying toward the inner wall of the sewage tank 10. At this point, the first air pump 50 stops pumping air from the accommodating chamber 11, maintaining a negative pressure within the accommodating chamber 11. The liquid stored in the accommodating chamber 11 can soak the inner wall of the sewage tank 10. Since the accommodating chamber 11 is completely filled with liquid, the liquid can soak various locations on the inner wall of the sewage tank 10. When the liquid soaks the inner wall of the sewage tank 10, it dissolves dirt on the inner wall of the sewage tank 10, effectively cleaning the sewage tank 10.

[0073] 1 and 2 , in some embodiments, when the waste in the accommodating chamber 11 is discharged from the sewage tank 10 , the first air pump 50 is further configured to pump air into the accommodating chamber 11 through the first air hole 14 .

[0074] After the liquid sprayed from the outlet 15 into the accommodating chamber 11 soaks the inner wall of the sewage tank 10 for a period of time, it can dissolve the dirt on the inner wall of the sewage tank 10. Once the liquid dissolves the dirt on the inner wall of the sewage tank 10, it can carry the dirt with it and flow out of the sewage tank 10 through the connecting hole 12. At this point, the first air pump 50 switches from extracting gas from the accommodating chamber 11 to pumping air into the accommodating chamber 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 accommodating chamber 11. When the first air pump 50 pumps air into the accommodating chamber 11 through the first air hole 14, the air pressure inside the accommodating chamber 11 is greater than the air pressure outside the accommodating chamber 11. As a result, the liquid in the accommodating chamber 11 can carry the dirt and flow out of the sewage tank 10 through the connecting hole 12. When the first air pump 50 pumps air into the accommodating chamber 11 , all the liquid and dirt in the accommodating chamber 11 can be discharged out of the sewage tank 10 , and no liquid and dirt remain in the sewage tank 10 , thereby achieving a better cleaning effect of the sewage tank 10 .

[0075] When the first air pump 50 pumps air into the accommodating chamber 11 to discharge the liquid and dirt in the accommodating chamber 11 out of the sewage tank 10, the connecting pipe 90 of the cleaning module 100 may be a straight pipe, or the connecting pipe 90 of the cleaning module 100 may 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 sewage tank 10. When the first air pump 50 does not pump air into the accommodating chamber 11, it is difficult for the liquid and dirt in the accommodating chamber 11 to discharge out of the cleaning module 100 through the bend, thereby preventing the liquid and dirt from flowing onto the surface to be cleaned. When the liquid and dirt in the accommodating chamber 11 need to be discharged, the first air pump 50 pumps air into the accommodating chamber 11, and when the liquid and dirt flow into the connecting pipe 90, they can overcome the height of the bend, and the liquid and dirt can be discharged out of the cleaning module 100.

[0076] In other embodiments, when the liquid and waste in the receiving chamber 11 need to be discharged from the sewage tank 10, the receiving chamber 11 can be connected to the atmosphere, thereby achieving atmospheric pressure within the receiving chamber 11. The liquid and waste in the receiving chamber 11 can then flow out of the sewage tank 10 through the connecting hole 12. This method of allowing the liquid and waste to flow out of the sewage tank 10 from the receiving chamber 11 is relatively simple. In this case, the connecting tube 90 of the cleaning module 100 can be a straight tube, connected to the connecting hole 12, allowing the liquid and waste in the receiving chamber 11 to flow out of the cleaning module 100 through the connecting tube 90.

[0077] The number of first air holes 14 can be, but is not limited to, one, two, three, or more. When there is only one first air hole 14, the structure of the sewage tank 10 is relatively simple, and the processing of the sewage tank 10 is relatively simple. When there are multiple first air holes 14, the first air pump 50 is connected to multiple first air holes 14. The first air pump 50 can simultaneously extract the gas from the accommodating chamber 11 through the multiple first air holes 14. The first air pump 50 can quickly extract the gas from the accommodating chamber 11, and the first air pump 50 is more efficient in extracting the gas from the accommodating chamber 11. The first air pump 50 can also simultaneously pump air into the accommodating chamber 11 through multiple first air holes 14, so that the liquid and dirt in the accommodating chamber 11 can be quickly discharged outside the sewage tank 10. The number of first air holes 14 in the embodiment of the present application is one.

[0078] When the first air pump 50 is used to extract gas from the accommodating chamber 11 and also pumps gas into the accommodating chamber 11, the structure of the cleaning module 100 is relatively simple, and the number of components in the cleaning module 100 is relatively small, which can save costs. When the first air hole 14 is used to allow gas from the accommodating chamber 11 to flow into the first air pump 50 and also allows gas from the first air pump 50 to enter the accommodating chamber 11, the structure of the sewage tank 10 is relatively simple, and the sewage tank 10 is relatively easy to manufacture.

[0079] 1 and 2 , further, in some embodiments, the sewage tank 10 is further provided with a second air hole spaced apart from the first air hole 14, the second air hole being in communication with the receiving chamber 11. When waste in the receiving chamber 11 is discharged from the sewage tank 10, the first air pump 50 is configured to pump air into the receiving chamber 11 through the second air hole.

[0080] One end of the second air hole is connected to the accommodating chamber 11, and the other end of the second air hole is connected to the first air pump 50. The second air hole is used to allow air in the first air pump 50 to enter the accommodating chamber 11. When the first air pump 50 pumps air into the accommodating chamber 11 through the second air hole, the air pressure inside the accommodating chamber 11 is greater than the air pressure outside the accommodating chamber 11. As a result, the liquid in the accommodating chamber 11 can carry dirt and flow out of the sewage tank 10 through the connecting hole 12. Furthermore, when the first air pump 50 pumps air into the accommodating chamber 11, the liquid and dirt in the accommodating chamber 11 can be completely discharged out of the sewage tank 10, leaving no residual liquid or dirt inside the sewage tank 10, thereby improving the cleaning effect of the sewage tank 10.

[0081] The number of second air holes can be, but is not limited to, one, two, three, or more. When there is only one second air hole, the structure of the sewage tank 10 is relatively simple, and the sewage tank 10 is relatively easy to manufacture. When there are multiple second air holes, the first air pump 50 is connected to each of the multiple second air holes. The first air pump 50 can simultaneously pump air into the receiving chamber 11 through the multiple second air holes, thereby quickly draining the liquid and waste in the receiving chamber 11 out of the sewage tank 10. In the embodiment of the present application, the number of second air holes is one.

[0082] When the first air hole 14 is used to allow gas in the accommodating chamber 11 to flow into the first air pump 50, and the second air hole is used to allow gas in the first air pump 50 to enter the accommodating chamber 11, the first air hole 14 and the second air hole do not interfere with each other, thereby improving the operating efficiency of the first air pump 50 (the efficiency of extracting gas from the accommodating chamber 11 and the efficiency of pumping gas into the accommodating chamber 11). Furthermore, if the first air hole 14 is damaged, the first air hole 14 will not affect the function of the second air hole. If the second air hole is damaged, the second air hole will not affect the function of the first air hole 14, thereby improving the stability and reliability of the sewage tank 10.

[0083] Please refer to Figures 1 and 2. Furthermore, in some embodiments, the cleaning module 100 also includes a second air pump, and the sewage tank 10 is further provided with a second air hole separated from the first air hole 14. One end of the second air hole is connected to the accommodating chamber 11, and the other end is connected to the second air pump; when the dirt in the accommodating chamber 11 is discharged from the sewage tank 10, the second air pump is used to pump air into the accommodating chamber 11 through the second air hole.

[0084] While the outlet 15 sprays liquid into the accommodating chamber 11, the first air pump 50 extracts air from the accommodating chamber 11 through the first air hole 14, allowing the liquid to be stored within the accommodating chamber 11 and soak the inner wall of the sewage tank 10. A second air pump is disposed within the main body 30 and spaced apart from the first air pump 50. As the liquid dissolves dirt on the inner wall of the sewage tank 10, the second air pump can pump air into the accommodating chamber 11 through the second air hole. When the second air pump pumps air into the accommodating chamber 11 through the second air hole, the air pressure inside the accommodating chamber 11 is greater than the air pressure outside the accommodating chamber 11, allowing the liquid in the accommodating chamber 11 to be discharged out of the sewage tank 10, carrying the dirt with it. Furthermore, when the second air pump pumps air into the accommodating chamber 11, the liquid and dirt in the accommodating chamber 11 are completely discharged out of the sewage tank 10, leaving no residual liquid or dirt inside. This effectively cleans the sewage tank 10.

[0085] With the first air pump 50 used to extract gas from the accommodating chamber 11 and the second air pump used to pump air into the accommodating chamber 11, when liquid and waste need to be discharged from the sewage tank 10, the second air pump can quickly start and pump air into the accommodating chamber 11. The first air pump 50 does not need to switch from a vacuuming mode to a pumping mode, and the use of the second air pump saves time during this switching process, allowing liquid and waste to be quickly discharged from the sewage tank 10 through the connecting hole 12. Furthermore, the clear division of labor between the first and second air pumps ensures a long service life for both.

[0086] Referring to Figures 1 and 2 , in certain embodiments, the cleaning module 100 further includes a sewage trough 60, a sewage discharge member 70, and a connecting pipe 90. The sewage trough 60 is disposed within the main body 30 and is used to receive waste. The sewage discharge member 70 is connected to the sewage trough 60 and has a sewage outlet 71 that communicates with the sewage trough 60. The connecting pipe 90 has one end connected to the sewage tank 10 and the other end connected to the sewage trough 60.

[0087] Specifically, the connecting pipe 90 is connected to the connecting hole 12 of the sewage tank 10. The connecting pipe 90 connects the sewage trough 60 and the receiving chamber 11. Dirt in the sewage trough 60 can pass through the connecting pipe 90 into the receiving chamber 11, and liquid and dirt in the receiving chamber 11 can also pass through the connecting pipe 90 into the sewage trough 60. The connecting pipe 90 can be made of, but is not limited to, metal or plastic. Metal offers increased strength, better wear resistance, and a longer service life. Plastic offers reduced weight and lower cost. The sewage discharge member 70 drains the liquid and dirt in the sewage trough 60 out of the cleaning module 100. The sewage discharge member 70 can be made of, but is not limited to, metal or plastic. Metal offers increased strength, better wear resistance, and a longer service life. Plastic offers reduced weight and lower cost.

[0088] The accommodating chamber 11, the connecting pipe 90, the sewage trough 60, and the sewage outlet 71 are connected in sequence. When the cleaning module 100 cleans the surface to be cleaned, the dirt on the mopping member is scraped off by the scraping member, and the scraped dirt falls into the sewage trough 60. Since the first air pump 50 extracts air from the accommodating chamber 11 through the first air hole 14, the dirt in the sewage trough 60 flows into the connecting pipe 90 and then flows from the connecting pipe 90 into the accommodating chamber 11, so that the dirt can be stored in the sewage tank 10. When the dirt in the sewage tank 10 (here, the dirt stored in the sewage tank 10) needs to be discharged, the first air pump 50 or the second air pump pumps air into the accommodating chamber 11. The dirt in the accommodating chamber 11 passes through the connecting pipe 90 and the sewage trough 60 and is discharged from the sewage outlet 71.

[0089] After the liquid soaks the sewage tank 10, it carries the waste in the accommodating chamber 11 out of the connecting hole 12. The water pressure of the liquid and waste flowing out of the connecting hole 12 is relatively high. At this point, the liquid flushes the connecting pipe 90, the sewage trough 60, and the sewage discharge member 70 as it flows through them. The liquid carries the waste in the connecting pipe 90, the sewage trough 60, and the sewage discharge member 70 out of the sewage outlet 71, thereby keeping the connecting pipe 90, the sewage trough 60, and the sewage discharge member 70 relatively clean.

[0090] 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 tank 60. In the height direction H of the sewage tank 10, the highest point of the bending portion is higher than the connection between the connecting pipe 90 and the sewage tank 10.

[0091] If the chamber 11 is filled with waste or if external liquid soaks the sewage tank, if the sealing of the chamber 11 is not strong enough, the liquid and waste in the chamber 11 may flow out of the connecting pipe 90, causing leakage. The provision of the bent portion prevents the liquid and waste in the chamber 11 from flowing out of the connecting pipe 90. In the height direction H of the sewage tank 10, the highest point of the bent portion is higher than the connecting hole 12. Therefore, the liquid and waste flowing out of the connecting hole 12 cannot flow over the bent portion into the sewage tank 60, thus preventing the liquid and waste from flowing onto the surface to be cleaned.

[0092] Please refer to FIG. 1 , FIG. 2 and FIG. 4 . Furthermore, in some embodiments, the cleaning module 100 further includes a clean water tank. The clean water tank is disposed on the body 30 , is connected to the inlet 131 , and is used to store cleaning liquid.

[0093] The cleaning liquid referred to here is the same as the "liquid" mentioned above, and includes clean water, cleaning liquid, or a mixture of liquids containing cleaning liquid. When the cleaning module 100 is cleaning the surface to be cleaned, the clean water tank is used to supply cleaning liquid to the mopping element, keeping it moist and effectively cleaning the surface. When the sewage tank 10 needs to be cleaned, the clean water tank is used to supply cleaning liquid to the sewage tank 10. The clean water tank is connected to the inlet 131. The cleaning liquid in the clean water tank enters the channel 13 from the inlet 131 and is sprayed toward the inner wall of the sewage tank 10 through the outlet 15 to clean the sewage tank 10. When the liquid and dirt in the sewage tank 10 flow out of the connecting pipe 90, the sewage trough 60, and the sewage outlet 71, the cleaning liquid is also used to clean the connecting pipe 90, the sewage trough 60, and the sewage outlet 70.

[0094] When the clean water tank of cleaning module 100 supplies cleaning liquid to sewage tank 10, the distance between the clean water tank and sewage tank 10 is relatively close, and the time it takes for the cleaning liquid to flow from the clean water tank to the sewage tank 10 is relatively short, resulting in a higher cleaning efficiency for the sewage tank 10. Furthermore, when cleaning device 1000 is moved, the relative distance between the clean water tank and the sewage tank 10 remains unchanged, allowing the clean water tank to supply cleaning liquid to the sewage tank 10 at any time, making cleaning of the sewage tank 10 more convenient.

[0095] The cleaning module 100 of the present embodiment comprises a channel 13 and multiple outlet holes 15 at the top of the sewage tank 10. The multiple outlet holes 15 are spaced apart along the circumference of the sewage tank 10. When the sewage tank 10 needs to be cleaned, external liquid enters the channel 13 and is sprayed from the outlet holes 15 toward the inner sidewall of the sewage tank 10, away from the cross-sectional center of the sewage tank 10. Dirt inside the sewage tank 10 can be flushed out of the sewage tank 10 by the external liquid. Compared to conventional sewage tanks 10, the sewage tank 10 of the present application can achieve a self-cleaning function, resulting in higher cleaning efficiency. Furthermore, the sewage tank 10 does not require manual cleaning, providing a better user experience.

[0096] Please refer to FIG. 7 . In a third aspect, an embodiment of the present application further provides a cleaning device 1000 . The cleaning device 1000 includes a body 300 and the cleaning module 100 of the above embodiment. The cleaning module 100 is disposed on the body 300 .

[0097] In some embodiments, the cleaning device 1000 further includes a clean water tank, which is disposed on the main body 30 and / or the fuselage 300 , is connected to the inlet 131 , and is used to store cleaning liquid.

[0098] The cleaning liquid herein is the same as the "liquid" referred to above, and includes clean water, cleaning liquid, or a mixture of clean liquid and water. In one embodiment, a clean water tank is disposed within the body 30 of the cleaning module 100. The clean water tank herein has the same structure as the clean water tank of the second aspect and will not be described in detail here.

[0099] Referring to Figures 1, 2, 4, and 7, in another embodiment, a clean water tank is disposed on the body 300. The clean water tank on the body 300 is used to supply cleaning liquid to the mopping member and also to the sewage tank 10. When the sewage tank 10 needs to be cleaned, the clean water tank on the body 300 provides cleaning liquid to the sewage tank 10. The clean water tank can be connected to the inlet 131 via a pipe. Cleaning liquid in the clean water tank enters the channel 13 through the inlet 131 and is sprayed toward the inner wall of the sewage tank 10 through the outlet 15, thereby cleaning the sewage tank 10. When the liquid and dirt in the sewage tank 10 flow out of the connecting pipe 90, the sewage trough 60, and the sewage outlet 71, the cleaning liquid is also used to clean the connecting pipe 90, the sewage trough 60, and the sewage outlet 70.

[0100] When the clean water tank mounted on the body 300 supplies cleaning liquid to the sewage tank 10, the distance between the clean water tank and the sewage tank 10 is relatively close, shortening the time it takes for the cleaning liquid to flow from the clean water tank into the sewage tank 10 and improving the cleaning efficiency of the sewage tank 10. Furthermore, when the cleaning device 1000 is moved, the relative distance between the clean water tank and the sewage tank 10 remains unchanged, allowing the clean water tank to supply cleaning liquid to the sewage tank 10 at any time, making cleaning the sewage tank 10 more convenient.

[0101] In other embodiments, when the sewage tank 10 needs to be cleaned, an external water source can provide cleaning liquid to the sewage tank 10. The external water source can be connected to the inlet 131 via a pipe. The cleaning liquid from the external water source enters the channel 13 through the inlet 131 and is sprayed toward the inner wall of the sewage tank 10 through the outlet 15 to clean the sewage tank 10. When the liquid and waste in the sewage tank 10 flow out of the connecting pipe 90, the sewage trough 60, and the sewage outlet 71, the cleaning liquid is also used to clean the connecting pipe 90, the sewage trough 60, and the sewage discharge member 70.

[0102] The cleaning device 1000 of the present embodiment comprises a channel 13 and multiple outlet holes 15 at the top of a sewage tank 10. The multiple outlet holes 15 are spaced apart along the circumference of the sewage tank 10. When the sewage tank 10 needs to be cleaned, external liquid enters the channel 13 and is sprayed from the outlet holes 15 toward the inner sidewall of the sewage tank 10, away from the cross-sectional center of the sewage tank 10. Dirt inside the sewage tank 10 can be flushed out of the sewage tank 10 by the external liquid. Compared to conventional sewage tanks 10, the sewage tank 10 of the present application can achieve a self-cleaning function, resulting in higher cleaning efficiency. Furthermore, the sewage tank 10 does not require manual cleaning, providing a better user experience.

[0103] Please refer to Figures 7 and 8. In a fourth aspect, the embodiments of the present application further provide a base station 3000, which is used to maintain the cleaning device 1000.

[0104] The base station 3000 is a device used to maintain and service the cleaning device 1000. For example, the base station 3000 can clean the mopping member of the cleaning device 1000, and the base station 3000 can also charge the cleaning device 1000. Furthermore, the base station 3000 can also have at least one of the following functions: replenishing water, draining water, collecting dust, etc. for the cleaning device 1000. If the mopping member of the cleaning device 1000 is dirty and / or low on power, the cleaning device 1000 returns to the base station 3000 to clean the mopping member and / or charge. When the mopping member of the cleaning device 1000 is clean and / or fully charged, the cleaning device 1000 can leave the base station 3000 and continue cleaning the surface to be cleaned.

[0105] Please refer to Figures 7 and 8. In the fifth aspect, the embodiment of the present application also provides a cleaning system 10000, the cleaning system 10000 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 the cleaning module 100 of the above embodiment, and the cleaning module 100 is arranged on the body 300.

[0106] The base station 3000 is a device used to maintain and service the cleaning device 1000. For example, the base station 3000 can clean the mopping part of the cleaning device 1000, and the base station 3000 can also charge the cleaning device 1000. Furthermore, the base station 3000 can also have at least one of the following functions: replenishing water, draining water, collecting dust, etc. for the cleaning device 1000. If the mopping part of the cleaning device 1000 is dirty and / or low on power, the cleaning device 1000 returns to the base station 3000 to clean the mopping part and / or charge. When the mopping part of the cleaning device 1000 is cleaned and / or fully charged, the cleaning device 1000 can leave the base station 3000 and continue cleaning the surface to be cleaned.

[0107] Please refer to Figures 1, 2, 4 and 8. In some embodiments, the cleaning system 10000 also includes a clean water tank, which is 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.

[0108] The cleaning liquid referred to herein is the same as the "liquid" mentioned above, and includes clean water, cleaning liquid, or a mixture of clean liquid and water. In one embodiment, the clean water tank is disposed within the main body 30 of the cleaning module 100. This clean water tank has the same structure as the clean water tank described in the second aspect and will not be described in detail here. In another embodiment, the clean water tank is disposed within the main body 300 of the cleaning module 100. This clean water tank has the same structure as the clean water tank described in the third aspect and will not be described in detail here.

[0109] 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 device 1000 and is also used to replenish the clean water tank of the cleaning device 1000. When the sewage tank 10 needs to be cleaned, the cleaning device 1000 returns to the base station 3000, and the clean water tank installed at the base station 3000 is used to supply cleaning liquid to the sewage tank 10. The clean water tank is connected to the inlet 131. The cleaning liquid in the clean water tank enters the channel 13 through the inlet 131 and is sprayed toward the inner wall of the sewage tank 10 through the outlet 15 to clean the sewage tank 10. When the liquid and dirt in the sewage tank 10 flow out of the connecting pipe 90, the sewage trough 60, and the sewage outlet 71, the cleaning liquid is also used to clean the connecting pipe 90, the sewage trough 60, and the sewage discharge member 70.

[0110] When the clean water tank installed on the base station 3000 provides cleaning liquid to the sewage tank 10, when the cleaning device 1000 returns to the base station 3000 to clean the sewage tank 10, the liquid carries the sewage out of the cleaning device 1000. In this case, the liquid and sewage can flow directly into the base station 3000, making the discharge of the liquid and sewage more convenient.

[0111] 1 , 2 , 4 , and 8 , further, in some embodiments, the base station 3000 is provided with a third air pump. When the waste in the accommodating chamber 11 is discharged from the wastewater tank 10 , the third air pump is used to pump air into the accommodating chamber 11 through the inlet 131 or the second air hole.

[0112] When the third air pump pumps air into the accommodating chamber 11 through the inlet 131, the third air pump is connected to the inlet 131. Gas enters the channel 13 from the inlet 131 and enters the accommodating chamber 11 through the multiple outlet holes 15, thereby increasing the air pressure in the accommodating chamber 11. When the third air pump pumps air into the accommodating chamber 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 accommodating chamber 11 through the second air hole.

[0113] When the liquid dissolves the dirt on the inner wall of the sewage tank 10, the third air pump can pump air into the accommodating chamber 11 through the inlet 131 or the second air hole. When the third air pump pumps air into the accommodating chamber 11 through the inlet 131, the air enters the channel 13 and enters the accommodating chamber through the outlet 15, thereby increasing the air pressure within the accommodating chamber 11. When the third air pump pumps air into the accommodating chamber 11 through the inlet 131 or the second air hole, the air pressure within the accommodating chamber 11 is greater than the air pressure outside the accommodating chamber 11. As a result, the liquid within the accommodating chamber 11 can carry the dirt and flow out of the sewage tank 10 through the connecting hole 12. Furthermore, when the third air pump pumps air into the accommodating chamber 11, the liquid and dirt within the accommodating chamber 11 can be completely discharged out of the sewage tank 10, leaving no residual liquid or dirt inside the sewage tank 10, thereby achieving a better cleaning effect for the sewage tank 10.

[0114] When the first air pump 50 is used to extract gas from the accommodating chamber 11 and the third air pump is used to pump air into the accommodating chamber 11, when dirt needs to be discharged from the sewage tank 10, the third air pump can be quickly started and pump air into the accommodating chamber 11. The first air pump 50 does not need to switch from the air extraction state to the air pumping state. The use of the third air pump can save time in the switching process, so that liquid and dirt can be quickly discharged from the connecting hole 12 to the outside of the sewage tank 10. In addition, the division of labor between the first air pump 50 and the third air pump is clear, and the service life of the first air pump 50 and the third air pump is long. Since the third air pump is set at the base station 3000, the weight of the cleaning device 1000 is lighter, and when cleaning the surface to be cleaned, the cleaning device 1000 is easier to move.

[0115] The cleaning system 10000 of the present embodiment comprises a channel 13 and multiple outlet holes 15 at the top of a sewage tank 10. The multiple outlet holes 15 are spaced apart along the circumference of the sewage tank 10. When the sewage tank 10 needs to be cleaned, external liquid enters the channel 13 and is sprayed from the outlet holes 15 toward the inner sidewall of the sewage tank 10, away from the cross-sectional center of the sewage tank 10. Dirt inside the sewage tank 10 can be flushed out of the sewage tank 10 by the external liquid. Compared to existing sewage tanks 10, the sewage tank 10 of the present application can achieve a self-cleaning function, resulting in higher cleaning efficiency. Furthermore, the sewage tank 10 does not require manual cleaning, providing a better user experience.

[0116] Referring to FIG. 1 , FIG. 3 , FIG. 4 , and FIG. 9 , in a sixth aspect, an embodiment of the present application further provides a method for cleaning a sewage tank 10 . The cleaning method is applied to the sewage tank 10 of the above embodiment, and the cleaning method includes:

[0117] 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;

[0118] 05: The cleaning liquid flows down along the inner wall of the accommodating chamber 11 and is stored in the accommodating chamber 11, and the accommodating chamber 11 is soaked with the cleaning liquid for a predetermined period of time; and

[0119] 07: The dirt in the accommodating chamber 11 is discharged to the outside of the sewage tank 10.

[0120] Specifically, in one embodiment, when the sewage tank 10 needs to be cleaned, a clean water tank located within the main body 30 provides cleaning liquid to the sewage tank 10. The clean water tank may be equipped with a water pump. When the sewage tank 10 needs to be cleaned, a controller within the sewage tank 10 may activate the water pump to pump the cleaning liquid in the clean water tank into the channel 13 through the inlet 131. The cleaning liquid is then sprayed from the outlet 15 onto the inner wall of the sewage tank 10, flushing the inner wall.

[0121] Referring to Figure 7 , in another embodiment, when the sewage tank 10 needs to be cleaned, a clean water tank located in the body 300 of the cleaning device 1000 provides cleaning liquid to the sewage tank 10. The clean water tank may be equipped with a water pump. When the sewage tank 10 needs to be cleaned, the clean water tank is connected to the inlet 131. A controller of the sewage tank 10 activates the water pump to pump the cleaning liquid in the clean water tank through the inlet 131 and into the channel 13. The cleaning liquid is then sprayed from the outlet 15 onto the inner wall of the sewage tank 10, thereby flushing the inner wall of the sewage tank 10.

[0122] Referring to Figure 8 , in another embodiment, when the sewage tank 10 needs to be cleaned, a clean water tank located at the base station 3000 provides cleaning liquid to the sewage tank 10. The clean water tank may be equipped with a water pump. When the sewage tank 10 needs to be cleaned, the clean water tank is connected to the inlet 131. The controller of the sewage tank 10 or the controller of the base station 3000 can activate the water pump to pump the cleaning liquid in the clean water tank through the inlet 131 and into the channel 13. The cleaning liquid can then be sprayed from the outlet 15 onto the inner wall of the sewage tank 10, thereby flushing the inner wall of the sewage tank 10.

[0123] In another embodiment, when the sewage tank 10 needs to be cleaned, an external water source provides cleaning liquid to the sewage tank 10. The external water source may be provided with a water pump. When the sewage tank 10 needs to be cleaned, the external water source is connected to the inlet 131. The controller of the sewage tank 10 activates the water pump to pump the cleaning liquid in the clean water tank through the inlet 131 and into the channel 13. The cleaning liquid can be sprayed from the outlet 15 onto the inner wall of the sewage tank 10, thereby flushing the inner wall of the sewage tank 10.

[0124] Referring to Figures 1 to 4 , since the outlet 15 is located at the top of the sewage tank 10, when cleaning liquid is sprayed from the outlet 15 toward the inner wall of the top of the sewage tank 10, the cleaning liquid flows down the inner wall of the sewage tank 10 due to gravity. As the cleaning liquid flows down from the inner wall of the top of the sewage tank 10, it can rinse various locations on the inner wall of the sewage tank 10. When the cleaning liquid reaches the bottom of the sewage tank 10, it is stored in the holding chamber 11 and soaks the holding chamber 11 for a predetermined period of time. The predetermined period of time refers to the time required for the cleaning liquid to fully dissolve the dirt on the inner wall of the sewage tank 10. The predetermined period of time is the time from when the cleaning liquid fills the holding chamber 11 to when the liquid and dirt begin to drain from the sewage tank 10. For example, the predetermined period of time can be 3 minutes, 5 minutes, or 10 minutes. For example, if the predetermined duration is 5 minutes, the cleaning liquid will take 5 minutes to fully dissolve the dirt on the inner wall of the sewage tank 10. Furthermore, the time from the moment the cleaning liquid fills the holding chamber 11 to the moment the liquid and dirt begin to drain from the sewage tank 10 is 5 minutes. After the cleaning liquid has soaked the holding chamber 11 for the predetermined period, the liquid and dirt in the holding chamber 11 flow out of the connecting hole 12, into the connecting pipe 90, the sewage tank 60, and the sewage discharge member 70, and out of the cleaning module 100 through the sewage discharge port 71.

[0125] Referring to FIG. 1 , FIG. 3 , FIG. 4 , FIG. 10 and FIG. 11 , in certain embodiments, the method for cleaning the sewage tank 10 further includes:

[0126] 02: Close the connection between the sewage tank 10 and the outside world, so that the cleaning liquid is stored in the accommodating chamber 11.

[0127] In one embodiment (shown in FIG. 10 ), when the sewage tank 10 needs to be cleaned, the controller first activates the water pump to pump cleaning liquid into the channel 13, thereby spraying the cleaning liquid from the outlet 15 toward the inner wall of the sewage tank 10. The controller then controls the sewage tank 10 to close its connection with the outside world, allowing the cleaning liquid to be stored in the receiving chamber 11 and soak the inner wall of the sewage tank 10. In one example, the controller can control the sewage outlet 71 to close its connection with the outside world, thereby preventing the liquid and dirt in the sewage tank 10 from being discharged outside the cleaning module 100. The cleaning liquid flowing into the receiving chamber 11 from the outlet 15 can be stored in the receiving chamber 11. In another example, the controller can control the connection hole 12 to close its connection with the outside world, thereby preventing the liquid and dirt in the receiving chamber 11 from flowing into the sewage tank 60, and allowing the cleaning liquid flowing into the receiving chamber 11 from the outlet 15 to be stored in the receiving chamber 11.

[0128] In another embodiment (shown in FIG11 ), when the sewage tank 10 needs to be cleaned, the controller first controls the sewage tank 10 to close its connection with the outside world. 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 toward the inner wall of the sewage tank 10. The cleaning liquid can be stored in the sewage tank 10 and soak the inner wall of the sewage tank 10. In one example, the controller controls the sewage outlet 71 to close its connection with the outside world, so that the liquid and dirt in the sewage tank 10 cannot be discharged outside the cleaning module 100. The cleaning liquid flowing into the accommodating chamber 11 from the outlet 15 can be stored in the accommodating chamber 11. In another example, the controller controls the connecting hole 12 to close its connection with the outside world, so that the liquid and dirt in the accommodating chamber 11 cannot flow into the sewage tank 60, and the cleaning liquid flowing into the accommodating chamber 11 from the outlet 15 can be stored in the accommodating chamber 11.

[0129] Please refer to FIG. 1 , FIG. 3 , FIG. 4 , and FIG. 12 . In certain embodiments, 07 : the waste in the receiving chamber 11 is discharged to the outside of the sewage tank 10 , including:

[0130] 071: Open the connection between the sewage tank 10 and the outside world, so that the dirt in the accommodating cavity 11 is discharged to the outside of the sewage tank 10.

[0131] After the cleaning liquid has soaked the holding chamber 11 for a predetermined period of time, the liquid and dirt in the holding chamber 11 need to be discharged from the sewage tank 10. At this time, the controller can control the sewage tank 10 to open communication with the outside world, so that the liquid and dirt in the holding chamber 11 can pass through the connecting pipe 90 and the sewage tank 60 and be discharged from the sewage outlet 71 to the outside of the cleaning module 100. In one example, the controller controls the sewage outlet 71 to open communication with the outside world, so that the liquid and dirt in the sewage tank 10 can pass through the connecting pipe 90 and the sewage tank 60 and be discharged from the sewage outlet 71 to the outside of the cleaning module 100. In another example, the controller controls the connecting hole 12 to open communication with the outside world, so that the liquid and dirt in the sewage tank 10 can pass through the connecting pipe 90 and the sewage tank 60 and be discharged from the sewage outlet 71 to the outside of the cleaning module 100.

[0132] Referring to FIG. 1 , FIG. 3 , FIG. 4 , FIG. 13 and FIG. 14 , in certain embodiments, the method for cleaning the sewage tank 10 further includes:

[0133] 04: Use the first air pump 50 to extract the gas in the accommodating chamber 11 so that the cleaning liquid is stored in the accommodating chamber 11.

[0134] In one embodiment (shown in FIG. 13 ), when the sewage tank 10 needs to be cleaned, the controller first activates the water pump to pump cleaning liquid into the channel 13, causing the cleaning liquid to be sprayed from the outlet 15 toward the inner wall of the sewage tank 10. The controller then activates the first air pump 50, which draws air from the accommodating chamber 11 through the first air hole 14, reducing the air pressure inside the accommodating chamber 11 to a lower level than the air pressure outside. This allows the cleaning liquid to be stored in the accommodating chamber 11 and soak the inner wall of the sewage tank 10.

[0135] In another embodiment (shown in FIG. 14 ), when the sewage tank 10 needs to be cleaned, the controller first activates the first air pump 50, which draws air from the receiving chamber 11 through the first air hole 14. The controller then activates the water pump to pump cleaning liquid into the channel 13, spraying the cleaning liquid from the outlet 15 toward the inner wall of the sewage tank 10. Because the air pressure inside the receiving chamber 11 is lower than the air pressure outside the chamber 11, the cleaning liquid is stored in the sewage tank 10 and soaks the inner wall of the sewage tank 10.

[0136] Please refer to FIG. 1 , FIG. 3 , FIG. 4 , and FIG. 15 . In certain embodiments, 07 : the waste in the receiving chamber 11 is discharged to the outside of the sewage tank 10 , including:

[0137] 073: Use the first air pump 50 to pump air into the accommodating chamber 11 to discharge the dirt in the accommodating chamber 11 to the outside of the sewage tank 10.

[0138] After the cleaning liquid has soaked the receiving chamber 11 for a predetermined period of time, the liquid and dirt in the receiving chamber 11 need to be discharged from the sewage tank 10. At this time, the controller can control the first air pump 50 to switch from extracting gas from the receiving chamber 11 to pumping air into the receiving chamber 11. The first air pump 50 pumps air into the receiving chamber 11 through the first air hole 14 or the second air hole to make the air pressure in the receiving chamber 11 greater than the air pressure outside the receiving chamber 11. As a result, the liquid and dirt in the receiving chamber 11 can pass through the connecting pipe 90 and the sewage tank 60 and be discharged from the sewage outlet 71 to the outside of the cleaning module 100.

[0139] In other embodiments, the controller can also control the second air pump to pump air into the accommodating chamber 11 through the second air hole, so that the air pressure inside the accommodating chamber 11 is greater than the air pressure outside the accommodating chamber 11, so that the liquid and dirt in the accommodating chamber 11 can pass through the connecting pipe 90 and the sewage tank 60, and be discharged from the sewage outlet 71 to the outside of the cleaning module 100.

[0140] The method for cleaning a sewage tank 10 according to an embodiment of the present application provides a channel 13 and multiple outlet holes 15 at the top of the sewage tank 10. The multiple outlet holes 15 are spaced apart along the circumference of the sewage tank 10. When the sewage tank 10 needs to be cleaned, external liquid enters the channel 13 and is sprayed from the outlet holes 15 toward the inner sidewall of the sewage tank 10 in a direction away from the cross-sectional center of the sewage tank 10. Dirt inside the sewage tank 10 can be flushed out of the sewage tank 10 by the external liquid. Compared to existing sewage tanks 10, the sewage tank 10 of the present application can achieve a self-cleaning function and has higher cleaning efficiency. Furthermore, the sewage tank 10 does not require manual cleaning, providing a better user experience.

[0141] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there are no conflicts in the combination of these technical features, they should be considered to be within the scope of this specification. Furthermore, other implementations can be derived from the above-described embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

[0142] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A sewage tank, wherein: The sewage tank is provided with a accommodating cavity, and a channel and a plurality of outlet holes are provided on the top of the sewage tank. The outlet holes are arranged at intervals along the circumference of the sewage tank. The channel has an inlet, and the inlet is used to allow external liquid to enter the channel. The outlet holes connect the channel and the accommodating cavity, and the outlet holes spray liquid toward the inner side wall of the sewage tank in a direction away from the center of the cross section of the sewage tank.

2. The sewage tank according to claim 1, wherein: Along the flow direction of the liquid in the channel, the outlet includes a first surface and a second surface, the second surface is farther away from the inlet 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 in the channel is an acute angle.

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

4. The sewage tank according to claim 1, wherein: A water supply component is provided on the top of the sewage tank, and the inner cavity of the water supply component is the channel; Along a direction away from the cross-sectional center of the sewage tank, the water supply member includes a first side wall and a second side wall facing away from each other, the second side wall faces the cross-sectional center of the sewage tank, and the outlet is on the first side wall.

5. The sewage tank according to claim 4, wherein: The water supply component is a protruding structure protruding from the top of the sewage tank toward the accommodating cavity.

6. The sewage tank according to claim 4, wherein: The water supply member is a closed annular structure; or The water supply component is an at least partially open annular structure.

7. The sewage tank according to claim 4, wherein: The sewage tank includes a box body, which encloses the accommodating cavity; the water supply component extends from the inner wall of the box body toward the accommodating cavity, and 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 box body, the second sub-part is bent and connected to the first sub-part and is spaced from the inner wall of the box body, and the outlet is provided in the second sub-part.

8. The sewage tank according to claim 4, wherein: The sewage tank includes a combined cover and a box body, and the cover and the box body together form the accommodating cavity; the cover body includes a first side and a second side opposite to each other, and the first side of the cover body faces the accommodating cavity. The first side of the cover body is provided with the water supply component, and the water supply component is spaced from the inner side wall of the box body.

9. The sewage tank according to claim 8, wherein: The first side of the cover body is also provided with a partition and a liquid inlet structure. The partition is connected to the inner side wall of the cover body to divide the first side of the cover body into a first area and a second area. The water supply component is located in the first area. The first area and the box body together form the accommodating cavity. One end of the liquid inlet structure is located in the first area and is connected to 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, wherein: The cover body includes a first cover body and a second cover body. The first cover body and the second cover body are detachably connected and together form the channel.

11. The sewage tank according to claim 1, wherein: The extended shape of the channel includes arc, square arc, C-shape, U-shape, L-shape, semicircle, and ring shape; and / or The length of the line segment connecting all the outlet holes is not less than half of the circumference of the sewage tank.

12. The sewage tank according to claim 1, wherein: The sewage tank is further provided with a first air hole, which is communicated with the accommodating cavity and is used for allowing gas to enter and flow out of the accommodating cavity; when the outlet hole sprays liquid into the accommodating cavity, the first air hole allows the gas in the accommodating cavity to flow out.

13. The sewage tank according to claim 12, wherein: When the dirt in the accommodating cavity is discharged out of the sewage tank, the first air hole is used to allow gas to enter the accommodating cavity.

14. The sewage tank according to claim 12, wherein: The sewage tank is further provided with a second air hole spaced apart from the first air hole, and the second air hole is communicated with the accommodating cavity; when the dirt in the accommodating cavity is discharged out of the sewage tank, the second air hole is used to allow gas to enter the accommodating cavity.

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

16. The cleaning module according to claim 15, wherein: The cleaning module further includes a first air pump, which is disposed on the main body. The sewage tank further includes a first air hole, one end of which is connected to the accommodating cavity and the other end is connected to the first air pump. When the accommodating chamber stores waste, the first air pump is used to extract gas from the accommodating chamber through the first air hole; After the stored dirt is discharged from the accommodating chamber and the outlet hole sprays liquid into the accommodating chamber, the first air pump is used to extract gas in the accommodating chamber through the first air hole.

17. The cleaning module according to claim 16, wherein: When the dirt in the accommodating cavity is discharged from the sewage tank, the first air pump is used to pump air into the accommodating cavity through the first air hole.

18. The cleaning module according to claim 16, wherein: The sewage tank is further provided with a second air hole spaced apart from the first air hole, and the second air hole is communicated with the accommodating cavity; when the dirt in the accommodating cavity is discharged from the sewage tank, the first air pump is used to pump air into the accommodating cavity through the second air hole.

19. The cleaning module according to claim 16, wherein: The cleaning module also includes a second air pump, and the sewage tank is also provided with a second air hole separated from the first air hole, one end of the second air hole is connected to the accommodating cavity, and the other end is connected to the second air pump; when the dirt in the accommodating cavity is discharged from the sewage tank, the second air pump is used to pump air into the accommodating cavity through the second air hole.

20. The cleaning module according to claim 15, wherein: The cleaning module also includes: A sewage trough, the sewage trough is provided on the main body and is used to receive waste; A sewage discharge member, the sewage discharge member is connected to the sewage tank, the sewage discharge member is provided with a sewage outlet, and the sewage outlet is communicated with 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 tank.

21. The cleaning module according to claim 20, wherein: The connecting pipe 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, and one end of the connecting portion is 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 between the connecting pipe and the sewage tank.

22. The cleaning module according to claim 15, wherein: The cleaning module also includes: A clean water tank is provided on the main body, is communicated with the inlet, and is used for storing cleaning liquid.

23. A cleaning device, wherein: include: body; and The cleaning module according to any one of claims 15 to 22 is arranged on the fuselage.

24. The cleaning device according to claim 23, wherein The cleaning device also includes: A clean water tank is provided on the main body and / or the fuselage, the clean water tank is communicated with the inlet, and is used for storing cleaning liquid.

25. The cleaning device of claim 23, wherein The cleaning device includes a crawler-type cleaning robot or a drum-type cleaning robot.

26. A base station, used for maintaining the cleaning device according to any one of claims 23 to 25.

27. A cleaning system, wherein: The cleaning system includes a cleaning device and a base station, wherein the base station is used to maintain the cleaning device according to any one of claims 23 to 25; The cleaning equipment comprises: body; and The cleaning module according to any one of claims 15 to 22 is arranged on the fuselage.

28. The cleaning system of claim 27, wherein: The cleaning system further comprises: A clean water tank is provided on at least one of the main body, the fuselage and the base station, the clean water tank is communicated with the inlet and is used for storing cleaning liquid.

29. The cleaning system of claim 28, wherein: The base station is provided with a third air pump; when the dirt in the accommodating cavity is discharged from the sewage tank, the third air pump is used to pump air into the accommodating cavity through the inlet or the second air hole.

30. A method for cleaning a sewage tank, wherein: The cleaning method is applied to the sewage tank according to any one of claims 1 to 14, and the cleaning method comprises: Allowing the cleaning liquid to enter the channel from the inlet and spray onto the inner wall of the sewage tank from the outlet; The cleaning liquid flows down along the inner wall of the accommodating cavity and is stored in the accommodating cavity, and the accommodating cavity is soaked with the cleaning liquid for a predetermined period of time; and The dirt in the accommodating cavity is discharged to the outside of the sewage tank.

31. The method for cleaning a sewage tank according to claim 30, wherein: The cleaning method of the sewage tank also includes: The connection between the sewage tank and the outside is closed, so that the cleaning liquid is stored in the accommodating cavity.

32. The method for cleaning a sewage tank according to claim 30, wherein: The waste in the accommodating cavity is discharged to the outside of the sewage tank, comprising: The connection between the sewage tank and the outside is opened to discharge the dirt in the accommodating cavity to the outside of the sewage tank.

33. The method for cleaning a sewage tank according to claim 30, wherein: The cleaning method of the sewage tank also includes: The gas in the accommodating chamber is extracted by a first air pump so that the cleaning liquid is stored in the accommodating chamber.

34. The method for cleaning a sewage tank according to claim 30, wherein: The waste in the accommodating cavity is discharged to the outside of the sewage tank, comprising: A first air pump is used to pump air into the accommodating cavity so that the dirt in the accommodating cavity is discharged to the outside of the sewage tank.

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