Sewage tank, cleaning device and cleaning system

Abstract

The application discloses sewage tanks, cleaning devices and cleaning systems. The sewage tank comprises a tank body, a cover body, a sewage suction pipeline and a spray port. The cover body is arranged on the top of the tank body and cooperates with the tank body to form a containing cavity. The sewage suction pipeline is arranged in the containing cavity and is used for connecting the outside of the sewage tank with the containing cavity. The spray port is connected with an external water source of the sewage tank to clean at least part of the inner wall of the tank body by using the external water source. The bottom wall of the cover body comprises a first area and a second area. The first area is the projection of the space between the outlet of the sewage suction pipeline and the inner wall of the tank body corresponding to the outlet of the sewage suction pipeline on the bottom wall of the cover body. The second area is the area of the bottom wall of the cover body except the first area. The spray port is only located in the second area or the spray range of the spray port only covers the second area.

Description

Technical Field

[0001] This application relates to the field of cleaning technology, specifically to a wastewater tank, cleaning equipment, and cleaning system. Background Technology

[0002] Cleaning equipment is widely used to clean surfaces, bringing great convenience to people's lives. During the cleaning process, the equipment sucks the garbage on the surface into a wastewater tank along with the wastewater. The garbage and / or wastewater entering the wastewater tank will adhere to the inner wall of the tank and the surfaces of other structures inside. If not treated in time, the wastewater tank will produce a foul odor.

[0003] To clean debris and / or wastewater adhering to the inner walls and other structural surfaces of the wastewater tank, spray nozzles are typically installed around the top perimeter of the tank. A liquid supply system supplies liquid to these nozzles to spray and clean the inner walls and other structural surfaces. However, because the wastewater tank requires numerous spray nozzles, the hydraulic pressure at each nozzle is often low, failing to effectively clean the corresponding surfaces where debris adheres. As a result, debris and / or wastewater residue may remain, causing the cleaning equipment to still produce a foul odor. Utility Model Content

[0004] This application provides a wastewater tank, cleaning equipment, and cleaning system, which at least solve the problems of low hydraulic pressure at the spray nozzles, inability to effectively clean surfaces where garbage adheres, and the generation of foul odors by the cleaning equipment.

[0005] In a first aspect, the wastewater tank according to embodiments of this application includes a tank body, a cover, a suction pipe, and a spray nozzle. The cover is disposed on the top of the tank body and together with the tank body forms a receiving cavity. The suction pipe is disposed within the receiving cavity and serves to connect the outside of the wastewater tank to the receiving cavity. The spray nozzle is connected to an external water source of the wastewater tank to clean at least a portion of the inner wall of the tank body using the external water source. The bottom wall of the cover includes a first region and a second region. The first region is the projection of the space between the outlet of the suction pipe and the inner wall of the tank body corresponding to the outlet of the suction pipe onto the bottom wall of the cover. The second region is the area of ​​the bottom wall of the cover excluding the first region. The spray nozzle is located only in the second region or the spray range of the spray nozzle only covers the second region.

[0006] In some embodiments, the cover has a through hole communicating with the top and bottom walls of the cover, and the wastewater tank further includes a partition. The partition is disposed on the bottom wall of the cover, spaced from the bottom of the tank, and configured to prevent liquid in the receiving cavity from entering the through hole.

[0007] In some embodiments, the partition divides the bottom wall of the cover into n regions, where n ≥ 2 and n is an integer. The outlet of the suction pipe is located in the space below the bottom wall of the cover corresponding to one of the n regions, and each of the remaining n-1 regions is provided with at least one spray nozzle.

[0008] Secondly, this application provides another type of wastewater tank. The wastewater tank includes a tank body, a cover, a partition, a spray nozzle, and a suction pipe. The cover is disposed on the top of the tank body and together with the tank body forms a receiving cavity, and the cover has a through hole connecting the top and bottom walls of the cover. The partition is disposed on the bottom wall of the cover, spaced apart from the bottom of the tank body, and is configured to prevent liquid in the receiving cavity from entering the through hole. The partition divides the bottom wall of the cover into n regions, where n ≥ 2, and n is an integer. The spray nozzle is disposed on the bottom wall of the cover, and each of the n-1 regions has a spray nozzle. The spray nozzle is connected to an external water source of the wastewater tank to clean at least a portion of the inner wall of the tank body using the external water source. The suction pipe is disposed within the receiving cavity and connects the outside of the wastewater tank to the receiving cavity. The outlet of the suction pipe is located in the space corresponding to the nth region.

[0009] In some embodiments, the outlet of the suction pipe faces the wall of the housing.

[0010] In some embodiments, the suction conduit includes a suction pipe and a guide shield. The suction pipe includes an inlet and an outlet and is at least partially disposed within the receiving cavity. The guide shield includes an inlet and an outlet and is disposed on the side of the cover facing the receiving cavity. The outlet of the suction pipe is connected to the inlet of the guide shield.

[0011] In some embodiments, the cross-sectional area of ​​the spray nozzle gradually decreases along the outflow direction of the liquid.

[0012] In some embodiments, the spray range of the sprayed liquid from the spray nozzle is fan-shaped.

[0013] In some embodiments, the wastewater tank further includes an installation component and a flow guide. The installation component has an installation cavity and an opening, the opening communicating with the installation cavity and the receiving cavity. The flow guide is disposed within the installation cavity and, together with the installation component, forms the spray nozzle. The spray nozzle communicates with the opening.

[0014] In some embodiments, the wastewater tank further includes an inlet and a piping assembly. The inlet is located within the tank body and connected to an external water source. The piping assembly includes a first pipe and a second pipe. The first pipe is located within the cover body. The first pipe includes an inlet end and an outlet end, with the outlet end communicating with the spray nozzle. The second pipe is located outside the cover body and housed within the receiving cavity. The second pipe includes an inlet end and an outlet end, with the inlet end communicating with the inlet and the outlet end communicating with the inlet end of the first pipe.

[0015] In some embodiments, the wastewater tank further includes an inlet and a piping assembly. The inlet is located within the tank body and connected to an external water source. The piping assembly includes a first pipe and a second pipe. The first pipe is located within the cover body and includes an inlet end and an outlet end. The outlet end of the first pipe communicates with the spray nozzle. The second pipe is located outside the cover body and housed within the receiving cavity. The second pipe includes an inlet end and an outlet end; the inlet end of the second pipe communicates with the inlet, and the outlet end of the second pipe communicates with the inlet end of the first pipe. The spray nozzle is located along the path connecting the second pipe and the first pipe, and the second pipe is part of the mounting component.

[0016] In some embodiments, the wastewater tank is used in a cleaning device, specifically a floor scrubber. The floor scrubber includes a handle, a middle frame, a chassis, a clean water tank, and a blower. The handle provides a gripper for the user to hold and manipulate the floor scrubber. The wastewater tank is detachably mounted on the middle frame. The middle frame has a connecting pipe and is connected to the chassis, which has cleaning components for contacting and cleaning surfaces to be cleaned. The clean water tank has an overflow outlet and is configured to store cleaning fluid. The chassis includes a suction port, cleaning components, and a suction pipe. The suction port communicates with the suction pipe, and when the wastewater tank is mounted on the middle frame, the connecting pipe connects the suction pipe and the suction pipe. The suction pipe includes a buffer area with a recess. The buffer area communicates with the overflow outlet and is used to store any overflowed cleaning fluid. The buffer zone is located near the suction port of the suction pipe. The distance from the lowest point of the buffer zone to the suction port is greater than or equal to 4 mm and less than or equal to 15 mm. The blower draws cleaning fluid overflowing from the clean water tank into the buffer zone. The cleaning fluid flows through the suction pipe, the connecting pipe, and the suction pipe to the wastewater tank, thereby cleaning at least a portion of the inner walls of the suction pipe, the connecting pipe, the suction pipe, and the wastewater tank.

[0017] In some embodiments, the wastewater tank is used in a cleaning device, specifically a floor scrubber. The floor scrubber includes a handle, a middle frame, a chassis, a clean water tank, and a blower. The handle provides a gripper for the user to hold and manipulate the floor scrubber. The wastewater tank is detachably mounted on the middle frame. The middle frame is connected to the chassis, which has cleaning components for contacting and cleaning surfaces to be cleaned. The clean water tank has an overflow outlet and is configured to store cleaning fluid. The chassis includes a suction port, cleaning components, and a suction pipe, the suction port communicating with the suction pipe. The suction pipe includes a buffer area with a groove. The buffer area communicates with the overflow outlet and is used to store overflowing cleaning fluid. The buffer area is located near the suction port on the suction pipe, and the distance from the lowest point of the buffer area to the suction port is greater than or equal to 4 mm and less than or equal to 15 mm. The blower draws cleaning fluid from the clean water tank into the buffer area, and the cleaning fluid flows through the sludge suction pipe and the sludge suction pipe to the wastewater tank, so as to clean at least part of the inner wall of the sludge suction pipe, the sludge suction pipe and the wastewater tank.

[0018] Thirdly, the cleaning equipment according to the embodiments of this application includes the wastewater tank, middle frame, chassis, clean water tank, and suction pipe described in any of the above embodiments. The wastewater tank is detachably installed on the middle frame. The middle frame is connected to the chassis. The clean water tank is provided with an overflow port and is configured to store cleaning fluid. The suction pipe is disposed on the chassis and / or the middle frame, and includes an inlet, an outlet, and a buffer area. The inlet of the suction pipe communicates with the outside, the outlet of the suction pipe communicates with the inlet of the suction pipe, the buffer area has a groove, and the buffer area communicates with the overflow port. The buffer area is located near the inlet of the suction pipe.

[0019] In some embodiments, the cleaning equipment includes a wastewater tank, a middle frame, a chassis, a clean water tank, and a suction pipe as described in any of the above embodiments. The wastewater tank is detachably mounted on the middle frame. The middle frame is connected to the chassis. The clean water tank has an overflow outlet and is configured to store cleaning fluid. The suction pipe is disposed on the chassis and / or the middle frame, and includes an inlet, an outlet, and a buffer area. The inlet of the suction pipe communicates with the outside, the outlet of the suction pipe communicates with the inlet of the suction pipe, the buffer area has a groove, and the buffer area communicates with the overflow outlet. The buffer area is located near the suction pipe at the point closest to the external surface to be cleaned.

[0020] In some embodiments, the overflow outlet is located at the top or side of the clean water tank.

[0021] In some embodiments, the chassis further includes an overflow pipe connecting the buffer area and the overflow outlet. The outlet of the overflow pipe is located above the buffer area.

[0022] In some embodiments, the middle frame further includes a liquid inlet and a piping assembly. The liquid inlet is used to allow external liquid to flow in. The piping assembly is configured to connect the liquid inlet and the injection port.

[0023] In some embodiments, the cleaning device includes a suction duct, which comprises a suction pipe and a sludge suction pipe, or a suction pipe, a connecting pipe, and a sludge suction pipe, wherein the connecting pipe is disposed on the middle frame. The cleaning device also includes a fan. The fan is disposed on the top of the cover and configured to draw cleaning fluid from the buffer zone through the suction duct to the outlet of the sludge suction pipe, thereby using the cleaning fluid to clean at least a portion of the inner walls of the suction duct and the wastewater tank.

[0024] In some embodiments, the bottom of the wastewater tank is provided with a drain outlet and a sealing cover, the sealing cover being disposed at the drain outlet and configured to open or close the drain outlet. When the sealing cover opens the drain outlet to allow waste and / or wastewater from the receiving cavity to drain from the drain outlet, the blower is activated.

[0025] In some embodiments, the cleaning equipment is a floor scrubber. The floor scrubber is configured on a cleaning base station for maintenance. The cleaning base station includes a docking station for providing a place for the floor scrubber to dock and be maintained.

[0026] Fourthly, the cleaning system of this application includes the cleaning equipment and cleaning base station described in any of the above embodiments, wherein the cleaning base station is used to maintain the cleaning equipment.

[0027] In some embodiments, the cleaning base station includes at least one of the following three modes: spray washing mode, overflow washing mode, and boiling washing mode. In the spray washing mode, the cleaning fluid in the cleaning base station flows through the inlet and piping assembly of the wastewater tank to the spray nozzle, and is sprayed from the spray nozzle onto at least a portion of the inner wall of the tank for cleaning. In the overflow washing mode, the fan in the cleaning equipment provides negative pressure, drawing the cleaning fluid from the buffer area through the suction duct into the receiving cavity to clean at least a portion of the inner wall of the suction duct; and / or, in the overflow washing mode, the fan in the cleaning equipment provides negative pressure, drawing the cleaning fluid through the suction duct into the receiving cavity to clean at least a portion of the inner wall of the wastewater tank. In the boiling washing mode, the sealing cover of the wastewater tank opens the drain port, the fan in the cleaning equipment is turned on, and the waste and / or wastewater in the receiving cavity is drawn through the suction duct, agitated, and discharged out of the wastewater tank through the drain port. The spray washing mode and the boiling washing mode are executed simultaneously, and the overflow washing mode is executed after the spray washing mode.

[0028] In some embodiments, in the overflow washing mode, the fan outputs power at a first power for a first preset duration and at a second power for a second preset duration. The first preset duration is shorter than the second preset duration, and the first power is less than the second power.

[0029] In the wastewater tank, cleaning equipment, and cleaning system of this application, the bottom wall of the cover is divided into a first area and a second area, and the spray nozzles are only set in the second area or the spray range of the spray nozzles only covers the second area. Compared with setting spray nozzles around the top of the wastewater tank and making the spray range of the spray nozzles fully cover the entire inner wall of the wastewater tank, the total number of spray nozzles in this application can be relatively small. Under the same liquid supply from the external liquid source, the hydraulic pressure of each spray nozzle is higher, which can effectively clean the surface of the garbage adhering to the corresponding spray nozzle. There will be no garbage and / or wastewater residue, and the cleaning equipment will not produce odor.

[0030] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0031] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein: Figure 1 This is a three-dimensional assembly schematic diagram of a sewage tank according to some embodiments of this application; Figure 2 yes Figure 1The diagram shows a cross-sectional view of the sewage tank taken by line II-II; Figure 3 yes Figure 2 The image shows a partial enlarged view of region III, which contains a spray nozzle, within the wastewater tank. Figure 4 yes Figure 1 The image shows a magnified view of a section of the wastewater tank containing another spray nozzle. Figure 5 yes Figure 1 The diagram shown is a three-dimensional exploded view of the sewage tank from one angle. Figure 6 yes Figure 1 A three-dimensional exploded view of the sewage tank from another angle; Figure 7 This is a three-dimensional assembly diagram of the cleaning equipment according to some embodiments of this application; Figure 8 yes Figure 7 The diagram shown is an exploded 3D view of the cleaning equipment. Figure 9 yes Figure 7 The cleaning equipment shown is a cross-sectional view taken by line IX-IX; Figure 10 yes Figure 8 An exploded perspective view of the chassis portion of the cleaning equipment shown. Figure 11 This is a schematic diagram of the structure of a cleaning system according to some embodiments of this application.

[0032] The reference numerals in the detailed embodiments are as follows: Cleaning system 1000; Cleaning base station 300; Cleaning equipment 100; Wastewater tank 10; Box body 11; Receiving cavity 111; Inlet 113; Drain 115; Sealing cover 117; Cover 12; bottom wall of cover 121; first region 1211; second region 1213; top of cover 123; through hole 125; Suction pipe 13; suction pipe 131; suction pipe inlet 1311; suction pipe outlet 1313; guide cover 133; guide cover inlet 1331; guide cover outlet 1333; Spray nozzle 14; baffle plate 15; mounting component 16; mounting cavity 161; opening 163; flow guide 17; Piping assembly 18; First pipe 181; Inlet end 1811 of the first pipe; Outlet end 1813 of the first pipe; Second pipe 183; Inlet end 1831 of the second pipe; Outlet end 1833 of the second pipe; 20. Middle frame; 21. Liquid inlet; 23. Pipe assembly; 25. Connecting pipe; Chassis 30; Suction port 31; Cleaning components 33; Clean water tank 40; overflow port 41; Sewage suction pipe 50; buffer area 55; overflow pipe 60; Fan 70. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] Cleaning equipment is widely used to clean surfaces, bringing great convenience to people's lives. During the cleaning process, the equipment sucks the garbage on the surface into a wastewater tank along with the wastewater. The garbage and / or wastewater entering the wastewater tank will adhere to the inner wall of the tank and the surfaces of other structures inside. If not treated in time, the wastewater tank will produce a foul odor.

[0039] To clean debris and / or sewage adhering to the inner walls and other structural surfaces of a sewage tank, spray nozzles are typically installed around the top perimeter of the tank. A liquid supply system supplies liquid to these nozzles to spray and clean the inner walls and other structural surfaces. However, because the sewage tank requires numerous spray nozzles, the hydraulic pressure at each nozzle is low, failing to effectively clean the corresponding surfaces where debris adheres. Debris and / or sewage remain, causing the cleaning equipment to still produce a foul odor. To address this issue, this application provides a sewage tank 10 (… Figure 1 (as shown), cleaning equipment 100 ( Figures 7 to 9 (as shown) and cleaning system 1000 ( Figure 11 (As shown).

[0040] Please refer to Figures 1 to 4 In a first aspect, embodiments of this application provide a wastewater tank 10. The wastewater tank 10 includes a tank body 11, a cover 12, a suction pipe 13, and a spray nozzle 14. The cover 12 is disposed on the top of the tank body 11 and, together with the tank body 11, forms a receiving cavity 111. The suction pipe 13 is disposed within the receiving cavity 111 and serves to connect the outside of the wastewater tank 10 to the receiving cavity 111. The spray nozzle 14 is connected to an external water source for the wastewater tank 10, so as to use the external water source to clean at least a portion of the inner wall of the tank body 11. Please refer to... Figure 5The bottom wall 121 of the cover includes a first region 1211 and a second region 1213. The first region 1211 is the projection of the space between the outlet 1333 of the suction pipe and the inner wall of the box 11 corresponding to the outlet 1333 of the suction pipe onto the bottom wall 121 of the cover. The second region 1213 is the area of ​​the bottom wall 121 of the cover excluding the first region 1211. The spray nozzle 14 is located only in the second region 1213 or the spray range of the spray nozzle 14 only covers the second region 1213.

[0041] The wastewater tank 10 is a structure used to store wastewater and garbage. The wastewater tank 10 collects wastewater generated by the cleaning equipment 100 (described below) when cleaning a surface to be cleaned, as well as garbage on the surface. When the wastewater tank 10 contains a certain amount of wastewater or garbage, it can be cleaned to discharge the wastewater or garbage. In some embodiments, the cleaning equipment is a sanitation vehicle, and the wastewater tank is used to store the garbage and wastewater generated during the operation of the sanitation vehicle; in other embodiments, the cleaning equipment is a carpet cleaner, and the wastewater tank is used to store the garbage and wastewater generated during the operation of the carpet cleaner; in still other embodiments, the cleaning equipment is a handheld floor scrubber, and the wastewater tank is used to store the garbage and wastewater generated during the operation of the handheld floor scrubber. This application uses the application of the wastewater tank 10 in a handheld floor scrubber as an example. In this case, the wastewater tank 10 is used to collect wastewater generated by the handheld floor scrubber when cleaning a surface to be cleaned, as well as garbage on the surface. The surface to be cleaned can be a floor, marble surface, or glass surface, etc.

[0042] The container 11 is used to collect garbage and / or sewage. After entering the sewage tank 10, most of the garbage and / or sewage settles at the bottom of the container 11 due to gravity, while a small portion adheres to the surfaces of the container 11 and other internal structures of the sewage tank 10. The cover 12 is used to close the container 11 to form a receiving cavity 111. The receiving cavity 111 is the spatial structure in the sewage tank 10 used to store garbage and / or sewage. The cover 12 is located on the top of the container 11 and is detachably connected to the top of the container 11, so that the receiving cavity 111 can be opened or closed, facilitating cleaning of the interior of the sewage tank 10 by the user.

[0043] The suction pipe 13 is used to allow garbage and / or sewage to enter the sewage tank 10, that is, the suction pipe 13 establishes a communication channel between the outside of the sewage tank 10 and the receiving cavity 111. When the cleaning equipment 100 is cleaning the surface to be cleaned, garbage and / or sewage are drawn into the receiving cavity 111 from the suction pipe 13 by the aspiration of gas. The fluid entering the sewage tank 10 through the suction pipe 13 can be a mixture of gas and liquid (sewage), or the fluid can be a mixture of gas, liquid (sewage), and solid (garbage).

[0044] In one embodiment, the fluid flowing into the receiving cavity 111 may be a mixture of gas and liquid. In this case, after the fluid enters the receiving cavity 111, the gas and liquid in the fluid are separated, the gas is drawn out of the receiving cavity 111, and the liquid is stored in the wastewater tank 10 due to gravity. In another embodiment, the fluid flowing into the receiving cavity 111 may be a mixture of gas, solid, and liquid. In this case, after the fluid enters the receiving cavity 111, the gas and solid-liquid mixture in the fluid are separated, the gas is drawn out of the receiving cavity 111, and the solid-liquid mixture is stored in the wastewater tank 10 due to gravity. This application describes an example where the fluid flowing into the receiving cavity 111 is a mixture of gas, solid, and liquid. In this case, due to gravity, the garbage and / or wastewater stored in the wastewater tank 10 may adhere to the inner wall of the wastewater tank 10 and the surfaces of other structures inside the wastewater tank 10 during the deposition process.

[0045] Please refer to Figure 2 and Figure 3 The spray nozzle 14 is an opening structure for spraying water to clean the wastewater tank 10. Specifically, an external water source is connected to the spray nozzle 14, and the water sprays at least a portion of the inner wall of the tank 11 through the spray nozzle 14 to remove debris and / or wastewater adhering to the inner wall of the wastewater tank 10 and other structural surfaces inside the wastewater tank 10. The area covered by the cleaning liquid sprayed from the spray nozzle 14, i.e., the area of ​​the tank 11 being cleaned, is effectively cleaned by the relatively fast flow rate of the cleaning liquid sprayed from the spray nozzle 14, as it effectively cleans at least a portion of the inner wall of the tank 11. The cleaning liquid can be, but is not limited to, clean water, a mixture of detergent and clean water, a mixture of disinfectant and clean water, or a mixture of conditioner and clean water, as long as it can clean the wastewater tank 10. It should be noted that "clean water" here is only a relative concept; any water that is cleaner than what the user perceives as wastewater is within the scope of protection. For example, clean water can be municipal tap water, well water, or clean water from rivers, lakes, and seas.

[0046] Please see Figure 2 and Figure 5Based on its relative relationship with the outlet 1333 of the suction pipe, the bottom wall 121 of the cover includes a first region 1211 and a second region 1213. Using the bottom wall 121 of the cover as a projection plane, the projection area of ​​the space between the outlet 1333 of the suction pipe and the inner wall of the box 11 corresponding to the outlet 1333 on the bottom wall 121 of the cover is the first region 1211. The remaining area on the bottom wall 121 of the cover, excluding the first region 1211, is the second region 1213. The wastewater tank 10 employs slightly different cleaning strategies for the first region 1211 and the second region 1213. In some embodiments, the spray nozzle 14 is only located in the second region 1213, in which case the main cleaning area of ​​the spray nozzle 14 is at least a portion of the second region 1213. In other embodiments, the spray range of the spray nozzle 14 only covers the second region 1213, in which case the entire cleaning area of ​​the spray nozzle 14 is at least a portion of the second region 1213.

[0047] The wastewater tank 10 of this application divides the bottom wall 121 of the cover into a first region 1211 and a second region 1213, and sets the spray nozzles 14 only in the second region 1213 or makes the spray range of the spray nozzles 14 only cover the second region 1213. Compared with setting the spray nozzles 14 around the top of the wastewater tank 10 and making the spray range of the spray nozzles 14 fully cover the entire inner wall of the wastewater tank 10, the total number of spray nozzles 14 in this application can be relatively small. Under the same liquid supply from the external liquid source, the hydraulic pressure of each spray nozzle 14 is higher, which can effectively clean the garbage adhesion surface corresponding to the spray nozzle 14. There will be no garbage and / or sewage residue, and the cleaning equipment 100 will not produce odor.

[0048] The sewage tank 10 will be further explained below with reference to the attached drawings.

[0049] Please refer to Figure 5 and Figure 6 In some embodiments, the cover 12 has a through hole 125 communicating with the top 123 and the bottom wall of the cover, and the sewage tank 10 also includes a partition 15. The partition 15 is disposed on the bottom wall 121 of the cover, spaced from the bottom of the tank 11, and is configured to prevent liquid in the receiving cavity 111 from entering the through hole 125.

[0050] Specifically, the through-hole 125 is a hole that provides a flow channel for gas flowing into and out of the wastewater tank 10. The through-hole 125 connects the top 123 of the cover and the bottom wall 121 of the cover. When the blower 70 (described below) in the cleaning device 100 is turned on, the blower 70 can suck the wastewater generated during cleaning of the surface to be cleaned, as well as the debris on the surface, into the receiving cavity 111 through the suction pipe 13. In the mixture of gas, debris, and wastewater entering the receiving cavity 111, the gas is further extracted through the through-hole 125, while the debris and / or wastewater are stored in the wastewater tank 10 due to gravity. In some embodiments, the through-hole 125 can be a straight hole penetrating the top 123 of the cover and the bottom wall 121 of the cover 12. In this way, when the blower 70 sucks wastewater and debris into the wastewater tank 10 through the through-hole 125, the suction airflow is smoother, the resistance is smaller, and the corresponding suction force is larger, which can improve the cleaning effect on the surface to be cleaned. In other embodiments, the through hole 125 can be a bent hole penetrating the top 123 of the cover and the bottom wall 121 of the cover 12, with one or more bends. Thus, when the blower 70 draws sewage and garbage into the sewage tank 10 through the through hole 125, the airflow is more tortuous in the through hole 125, resulting in relatively greater resistance. This prevents garbage, water, or moisture from reaching the top 123 of the cover through the through hole 125 and entering the blower 70, thereby preventing damage to the blower 70.

[0051] During the suction process of the blower 70, garbage and / or sewage are subjected to force and splash in the receiving cavity 111. At this time, garbage and / or sewage may collide with the cover 12 and / or the tank 11 and be deflected, especially sewage, which is more prone to this process. Therefore, to prevent garbage and sewage from entering the through hole 125 and reaching the top 123 of the cover, thereby damaging the blower 70 and other structures, a baffle 15 is provided in the sewage tank 10 to block sewage and / or garbage. The baffle 15 is located on the bottom wall 121 of the cover. The baffle 15 and the cover 12 can be an integral structure. In this case, the baffle 15 and the cover 12 are integrally formed, and the processing steps are relatively simple. The baffle 15 and the cover 12 can also be separate structures. In this case, the baffle 15 and the cover 12 can be detachably or non-detachably connected, and the connection between the two is more flexible.

[0052] A certain gap exists between the partition 15 and the bottom of the housing 11. This reduces the number of obstructions in the receiving cavity 111, resulting in less resistance to gas flow between the through-hole 125 and the suction pipe 13. Consequently, the cleaning equipment 100 has a stronger suction force, enabling it to more thoroughly remove wastewater and debris generated during cleaning. The partition 15 prevents liquid in the receiving cavity 111 from entering the through-hole 125, effectively separating gas, debris, and wastewater, ensuring the normal operation of the cleaning equipment 100 is unaffected.

[0053] Please refer to Figure 5 and Figure 6 In some embodiments, the partition 15 divides the bottom wall 121 of the cover into n regions, where n ≥ 2 and n is an integer. The outlet 1333 of the suction pipe is located in the space below the bottom wall 121 of the cover corresponding to one of the n regions, and each of the remaining n-1 regions is provided with at least one spray nozzle 14.

[0054] As described above, the bottom wall 121 of the cover is divided into at least two regions, namely the first region 1211 and the second region 1213, according to its relative relationship with the suction pipe 13. The partition 15 obstructs or blocks at least part of the spray range of the spray nozzle 14. The bottom wall 121 of the cover is further divided according to the position of the partition 15. Specifically, the partition 15 divides the bottom wall 121 of the cover into n regions, where n is an integer greater than or equal to 2. The number of regions n can be, but is not limited to, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or more, which are not listed here. At this time, in order to achieve thorough cleaning of the sewage tank 10, each region is provided with at least one structure for cleaning, such as the spray nozzle 14 or the overflow washing structure mentioned below.

[0055] In the aforementioned regions, one region corresponds to the suction pipe 13, and the outlet 1333 of the suction pipe corresponds to the space below the bottom wall 121 of the cover corresponding to that region. At this time, the mixture of gas, garbage, and sewage flowing from the outlet 1333 of the suction pipe mainly flows through this space. Correspondingly, in the spaces below the bottom wall 121 of the cover corresponding to the remaining n-1 regions, the garbage and / or sewage adhering to the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10 mainly splash from the aforementioned region. It can be understood that this region is the aforementioned first region 1211, and the remaining n-1 regions are the aforementioned second region 1213. At this time, the causes and degree of dirt formation in the first region 1211 and the second region 1213 may differ.

[0056] For the n-1 areas, this application uses spray nozzles 14 to spray cleaning fluid for cleaning. To avoid the presence of partitions 15 making it difficult for the spray range of the spray nozzles 14 to fully cover the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10 corresponding to the area, each of the n-1 areas is provided with at least one spray nozzle 14. At this time, each subdivided area in the second area 1213 can be effectively cleaned by the spray nozzles 14, while the first area 1211 is not provided with spray nozzles 14. Compared with the solution of setting more spray nozzles around the top of the sewage tank to achieve full coverage of each surface where the spray fluid adheres to the waste, the total number of spray nozzles 14 in this application can be less. Therefore, the hydraulic pressure of each spray nozzle 14 is relatively high, which can effectively clean the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10 in the n-1 areas.

[0057] Please refer to Figures 1 to 4 Secondly, this application provides another type of wastewater tank 10. The wastewater tank 10 includes a tank body 11, a cover 12, a partition 15, a spray nozzle 14, and a suction pipe 13. The cover 12 is disposed on the top of the tank body 11 and together with the tank body 11 forms a receiving cavity 111. The cover 12 has a through hole 125 communicating between the top 123 of the cover and the bottom wall. Please refer to... Figure 5 A partition 15 is disposed on the bottom wall 121 of the cover, spaced from the bottom of the housing 11, and configured to prevent liquid in the receiving cavity 111 from entering the through hole 125. The partition 15 divides the bottom wall 121 of the cover into n regions, where n ≥ 2 and n is an integer. Spray nozzles 14 are disposed on the bottom wall 121 of the cover, with each of the n-1 regions having a spray nozzle 14. The spray nozzles 14 are connected to an external water source of the wastewater tank 10 to clean at least a portion of the inner wall of the housing 11 using external water. A suction pipe 13 is disposed within the receiving cavity 111 and serves to connect the outside of the wastewater tank 10 to the receiving cavity 111. The outlet 1333 of the suction pipe is located in the space corresponding to the nth region.

[0058] The wastewater tank 10 of this application is installed on the cleaning equipment 100. The wastewater tank 10 is used to collect wastewater generated when the cleaning equipment 100 cleans the surface to be cleaned, as well as garbage on the surface to be cleaned. The wastewater tank 10 of this application has the same structure as the wastewater tank 10 of the first aspect. Therefore, the definitions of the tank body 11, cover 12, partition 15, spray nozzle 14, and suction pipe 13 are the same as those in the above-described embodiment, and will not be repeated here. The difference from the above-described embodiment is that the division of the area of ​​the bottom wall 121 of the cover is based solely on the setting position of the partition 15 on the bottom wall 121 of the cover. At this time, the bottom wall 121 of the cover can be further divided into areas according to the setting position of the partition 15. Specifically, the partition 15 divides the bottom wall 121 of the cover into n areas, where n is an integer greater than or equal to 2. The number of areas n can be, but is not limited to, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or more, which will not be listed here. In the aforementioned areas, each of the n-1 areas is equipped with a spray nozzle 14, and each spray nozzle 14 is connected to an external water source. The cleaning solution provided by the external water source cleans the corresponding areas of the n-1 areas. Specifically, it cleans the space below the bottom wall 121 of the cover corresponding to the n-1 areas, removing garbage and / or sewage adhering to the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10. The nth area corresponds to a suction pipe 13, and the outlet 1333 of the suction pipe corresponds to the space below the bottom wall 121 of the cover corresponding to that area. At this time, the mixture of gas, garbage, and sewage flowing from the outlet 1333 of the suction pipe mainly flows through this space and splashes towards the remaining n-1 areas.

[0059] For the n-1 areas, this application uses spray nozzles 14 to spray cleaning fluid for cleaning. To avoid the presence of partitions 15 obstructing or blocking the spray range of the spray nozzles 14, thus preventing complete coverage of the inner wall of the wastewater tank 10 and other structural surfaces within the wastewater tank 10, at least one spray nozzle 14 is provided in each of the n-1 areas. In this case, all n-1 areas can be effectively cleaned through the spray nozzles 14, while the nth area does not have a spray nozzle 14. Compared to a solution that uses multiple spray nozzles around the top of the wastewater tank to achieve complete coverage of the adhering surfaces of the waste fluid, the total number of spray nozzles 14 in this application can be reduced. Therefore, the hydraulic pressure of each spray nozzle 14 is relatively high, effectively cleaning the inner wall of the wastewater tank 10 and other structural surfaces within the wastewater tank 10 in the n-1 areas.

[0060] Please refer to Figure 2 , Figure 5 and Figure 6 In some embodiments, the outlet 1333 of the suction pipe faces the wall of the housing 11. (From the attached...) Figure 2As can be seen, in this application, the central axis of the outlet 1333 of the suction pipe intersects with the central axis of the bottom wall 121 of the cover, forming a first angle between them. The central axis of the outlet 1333 of the suction pipe also intersects with the central axis of the pipe body of the suction pipe 13, forming a certain second angle between them. Therefore, the outlet 1333 of the suction pipe is not directly opposite the bottom wall 121 of the cover, but faces the inner wall of the box 11. During the process of the mixture of gas, garbage and sewage entering the receiving cavity 111 through the suction pipe 13, due to the orientation of the outlet 1333 of the suction pipe and the influence of gravity, the mixture of gas, garbage and sewage flowing out of the outlet 1333 of the suction pipe flows out of the outlet 1333 of the suction pipe and quickly and fully enters the receiving cavity 111. Furthermore, the fluid flowing out from the outlet 1333 of the suction pipe can splash at a relatively high speed toward the inner wall of the tank 11 corresponding to the first region 1211, which can be used to effectively clean the inner wall of the sewage tank 10 in the first region 1211 and other structural surfaces inside the sewage tank 10.

[0061] Please refer to Figure 2 , Figure 5 and Figure 6 In some embodiments, the suction pipe 13 includes a suction tube 131 and a guide cover 133. The suction tube 131 includes an inlet 1311 and an outlet 1313, and is at least partially disposed within the receiving cavity 111. The guide cover 133 includes an inlet 1331 and an outlet 1333, and is disposed on the side of the cover 12 facing the receiving cavity 111. The outlet 1333 of the suction tube is connected to the inlet 1331 of the guide cover.

[0062] Specifically, the suction pipe 131 forms a suction channel for absorbing garbage and / or sewage, and the guide cover 133 guides the outflow direction of the mixture of gas, garbage, and sewage flowing from the suction pipe 131. The suction pipe 131 and the guide cover 133 can be an integral structure. In this case, the suction pipe 131 and the guide cover 133 are integrally formed, simplifying the manufacturing process. Alternatively, the suction pipe 131 and the guide cover 133 can be separate structures. In this case, the suction pipe 131 and the guide cover 133 can be detachably or non-detachably connected, providing greater flexibility in their connection.

[0063] The suction pipe 131 includes an inlet 1311 for allowing a mixture of gas, garbage, and sewage to enter, and an outlet 1313 communicating with a guide cover 133. At least a portion of the suction pipe 131 is disposed within the receiving cavity 111. In this case, the inlet 1311 of the suction pipe is the same as the inlet 1311 of the suction conduit. In some embodiments, the suction pipe 131 is completely disposed within the receiving cavity 111, in which case the housing 11 can protect the suction pipe 131. In other embodiments, the suction pipe 131 is partially disposed within the receiving cavity 111, such as... Figure 5As shown, the volume of the tank 11 can be set to be smaller, and the structure of the sewage tank 10 is more compact and easier to miniaturize.

[0064] The guide hood 133 includes an inlet 1331 for communication with the suction pipe 131, and an outlet 1333 for the mixture of gas, garbage, and sewage to flow into the receiving cavity 111. The guide hood 133 is disposed within the receiving cavity 111 and connected to the bottom wall 121 of the cover. In this case, the outlet 1333 of the guide hood is the outlet 1333 of the suction pipe. The guide hood 133 and the bottom wall 121 of the cover can also be an integral structure or separate structures. Please refer to... Figure 2 and Figure 5 Since both the guide cover 133 and the partition 15 are located on the side of the cover 12 facing the receiving cavity 111, and the partition 15 is distributed around the guide cover 133 and connected to the guide cover 133, the partition 15 and the guide cover 133 can support each other, resulting in greater structural strength and better structural stability of the sewage tank 10.

[0065] Please refer to Figures 2 to 4 In some embodiments, the cross-sectional area of ​​the spray nozzle 14 gradually decreases along the liquid outflow direction. The spray nozzle 14 sprays liquid, i.e., a cleaning solution, to clean debris and / or sewage from the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10. In this case, the gradual decrease in the cross-sectional area of ​​the spray nozzle 14 along the liquid outflow direction allows for a faster flow rate of the cleaning solution sprayed from the spray nozzle 14. Therefore, the cleaning solution can quickly clean debris and / or sewage from the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10, resulting in a better cleaning effect on the sewage tank 10.

[0066] Please refer to Figures 2 to 4 In some embodiments, the spray range of the liquid sprayed from the spray nozzle 14 is fan-shaped. The liquid sprayed from the spray nozzle 14, i.e., the spray cleaning fluid, is used to clean the garbage and / or sewage on the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10. In this case, the liquid sprayed from the spray nozzle 14 has a certain splash range within the receiving cavity 111, i.e., the spray range. In this application, the spray range of the spray nozzle 14 is fan-shaped, so the spray range can cover a larger area. Therefore, the combined spray range of multiple spray nozzles 14 can cover the entire second area 1213. Thus, the cleaning fluid can spray and clean the garbage and / or sewage on the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10 with a larger spray range, resulting in a better cleaning effect on the sewage tank 10.

[0067] Please refer to Figures 2 to 4Furthermore, in some embodiments, the wastewater tank 10 may also include a mounting member 16 and a flow guide 17. The mounting member 16 has a mounting cavity 161 and an opening 163, the opening 163 communicating with the mounting cavity 161 and the receiving cavity 111. The flow guide 17 is disposed within the mounting cavity 161 and together with the mounting member 16 forms a spray nozzle 14. The spray nozzle 14 communicates with the opening 163.

[0068] Specifically, the mounting member 16 provides a mounting position for at least a portion of the elements forming the spray nozzle 14, and together with these elements, forms the spray nozzle 14. In some embodiments, the mounting member 16 is a separate element and is mounted on the bottom wall 121 of the cover in a certain mounting manner. In other embodiments, the mounting member 16 is a separate element that cooperates with other structures of the sewage tank 10 to form an integral structure. In still other embodiments, the mounting member 16 is a partial structure on the sewage tank 10. In this application, the wall of the mounting member 16 forms a mounting cavity 161, which is a spatial structure for mounting at least a portion of the elements forming the spray nozzle 14. An opening 163 is formed in the wall of the mounting member 16 and communicates with the mounting cavity 161 and the receiving cavity 111.

[0069] The guide member 17 is used to cooperate with the mounting member 16 to jointly form the spray nozzle 14. In some embodiments, the spray nozzle 14 is formed solely by the guide member 17 and the mounting member 16. In other embodiments, the spray nozzle 14 is formed by the guide member 17, the mounting member 16, and other components. The guide member 17 is installed within the mounting cavity 161, and the guide member 17 and the mounting member 16 can be an integral structure. In this case, the guide member 17 and the mounting member 16 are integrally formed, simplifying the processing steps. The guide member 17 and the mounting member 16 can also be separate structures. In this case, the guide member 17 and the mounting member 16 can be detachably or non-detachably connected, providing greater flexibility in their connection. The gap between the guide 17 and the mounting part 16 is the spray nozzle 14. The spray nozzle 14 is connected to the opening 163, and the range of the opening 163 is larger than the spray range of the spray nozzle 14. At this time, the mounting part 16 will not obstruct the cleaning liquid from being sprayed out of the spray nozzle 14. The spray range of the spray nozzle 14 is larger, and the cleaning effect of the sewage tank 10 is better.

[0070] Please refer to Figure 2 and Figure 4In some embodiments, the wastewater tank 10 further includes an inlet 113 and a piping assembly 18. The inlet 113 is located in the tank body 11 and connected to an external water source. The piping assembly 18 includes a first pipe 181 and a second pipe 183. The first pipe 181 is located inside the cover 12. The first pipe 181 includes an inlet end 1811 and an outlet end 1813, and the outlet end 1813 of the first pipe communicates with a spray nozzle 14. The second pipe 183 is located outside the cover 12 and is housed within a receiving cavity 111. The second pipe 183 includes an inlet end 1831 and an outlet end 1833, and the inlet end 1831 of the second pipe communicates with the inlet 113, while the outlet end 1833 of the second pipe communicates with the inlet end 1811 of the first pipe.

[0071] Specifically, the inlet 113 is a spatial structure within the wastewater tank 10 used to allow cleaning fluid supplied by an external water source to enter the wastewater tank 10. The inlet 113 is located on the side of the tank body 11 and extends through it. The inlet 113 is connected to an external water source to form a communication path between the external water source and the wastewater tank 10. A piping assembly 18 connects the inlet 113 and the spray nozzle 14. The cleaning fluid supplied by the external water source flows into the piping assembly 18 through the inlet 113 and is then sprayed into the receiving cavity 111 through the spray nozzle 14. The piping assembly 18 includes a second pipe 183 and a first pipe 181, depending on the flow sequence of the cleaning fluid. Figure 4 As shown, Figure 4 This is an enlarged cross-sectional view of one of the spray nozzles 14 located on the bottom wall 121 of the cover of the sewage tank 10.

[0072] In one example, the second conduit 183 is located outside the cover 12, inside the receiving cavity 111, and near the inlet 113. The second conduit 183 includes an inlet end 1831 communicating with the inlet 113 and an outlet end 1833 communicating with the first conduit 181. Cleaning fluid supplied by an external water source flows into the inlet end 1831 of the second conduit through the inlet 113, and then flows into the first conduit 181 through the outlet end 1833. The first conduit 181 is located inside the cover 12. The first conduit 181 includes an inlet end 1811 communicating with the outlet end 1833 of the second conduit and an outlet end 1813 communicating with the spray nozzle 14. The cleaning fluid flowing in through the outlet 1833 of the second pipeline flows into the inlet 1811 of the first pipeline, and then flows through the outlet 1813 of the first pipeline to the spray nozzle 14, and is sprayed into the receiving cavity 111 through the spray nozzle 14. At this time, the cleaning fluid flows through the flow channel formed by the inlet 113, the second pipeline 183, the first pipeline 181 and the spray nozzle 14, and finally is sprayed into the receiving cavity 111 through the spray nozzle 14, so as to effectively clean the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10 in the second area 1213 or in the n-1 areas mentioned above.

[0073] Please refer to Figure 2 and Figure 3 In some embodiments, the wastewater tank 10 further includes an inlet 113 and a piping assembly 18. The inlet 113 is located in the tank body 11 and connected to an external water source. The piping assembly 18 includes a first pipe 181 and a second pipe 183. The first pipe 181 is located inside the cover 12 and includes an inlet end 1811 and an outlet end 1813. The outlet end 1813 of the first pipe communicates with a spray nozzle 14. The second pipe 183 is located outside the cover 12 and is housed within a receiving cavity 111. The second pipe 183 includes an inlet end 1831 and an outlet end 1833. The inlet end 1831 of the second pipe communicates with the inlet 113, and the outlet end 1833 of the second pipe communicates with the inlet end 1811 of the first pipe. A spray nozzle 14 is provided along the path connecting the second pipe 183 and the first pipe 181, and the second pipe 183 is part of the mounting component 16.

[0074] Specifically, the inlet 113 is a spatial structure within the wastewater tank 10 used to allow cleaning fluid supplied by an external water source to enter the wastewater tank 10. The inlet 113 is located on the side of the tank body 11 and extends through it. The inlet 113 is connected to an external water source to form a communication path between the external water source and the wastewater tank 10. A piping assembly 18 connects the inlet 113 and the spray nozzle 14. The cleaning fluid supplied by the external water source flows into the piping assembly 18 through the inlet 113 and is then sprayed into the receiving cavity 111 through the spray nozzle 14. The piping assembly 18 includes a second pipe 183 and a first pipe 181, depending on the flow sequence of the cleaning fluid. Figure 3 As shown, Figure 3 This is an enlarged cross-sectional view of a spray nozzle 14 located on the path connecting the second pipeline 183 and the first pipeline 181 in the sewage tank 10.

[0075] In one example, the second conduit 183 is located outside the cover 12, inside the receiving cavity 111, and near the inlet 113. The second conduit 183 includes an inlet end 1831 communicating with the inlet 113 and an outlet end 1833 communicating with the first conduit 181. Cleaning fluid supplied by an external water source flows into the inlet end 1831 of the second conduit through the inlet 113, and then flows into the first conduit 181 through the outlet end 1833. The first conduit 181 is located inside the cover 12. The first conduit 181 includes an inlet end 1811 communicating with the outlet end 1833 of the second conduit and an outlet end 1813 communicating with the spray nozzle 14.

[0076] In some embodiments, the spray nozzle 14 is located on the bottom wall 121 of the cover. In this case, the cleaning fluid flowing in through the outlet end 1833 of the second pipe flows into the inlet end 1811 of the first pipe, and then flows through the outlet end 1813 of the first pipe to the spray nozzle 14, and is sprayed into the receiving cavity 111 through the spray nozzle 14. In other embodiments, the spray nozzle 14 is located on the communication path between the second pipe 183 and the first pipe 181, with the wall of the second pipe 183 being part of the mounting component 16, i.e., the second pipe 183 participates in forming the spray nozzle 14. In this case, the cleaning fluid flowing in through the outlet end 1833 of the second pipe is directly sprayed into the receiving cavity 111 through the spray nozzle 14. Therefore, the cleaning fluid flows through the flow channel formed by the inlet 113, the second pipe 183, the first pipe 181, and the spray nozzle 14, or the cleaning fluid flows through the flow channel formed by the inlet 113, the second pipe 183, and the spray nozzle 14, and is sprayed into the receiving cavity 111 through the spray nozzle 14, so as to effectively clean the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10 in the second area 1213 or the n-1 areas of the n areas mentioned above.

[0077] Please refer to Figures 7 to 9 In some embodiments, the wastewater tank 10 is used for cleaning equipment 100, which is a handheld floor scrubber. The handheld floor scrubber includes a handle, a middle frame 20, a chassis 30, a clean water tank 40, and a blower 70. A handle (not shown) is also provided on the top of the middle frame 20 for the user to hold, allowing the user to operate the handheld floor scrubber to clean the surface to be cleaned. The wastewater tank 10 is detachably mounted on the middle frame 20. The middle frame 20 is provided with a connecting pipe 25, and the middle frame 20 is connected to the chassis 30. The chassis 30 is provided with a cleaning component 33 for contacting and cleaning the surface to be cleaned. The clean water tank 40 is provided with an overflow outlet 41 and is configured to store cleaning fluid. The chassis 30 is equipped with a suction port 31, a cleaning component 33, and a suction pipe 50. When the wastewater tank 10 is installed on the middle frame 20, the connecting pipe 25 connects the suction pipe 13 and the suction pipe 30. The suction pipe 13, the connecting pipe 25, and the suction pipe 50 together form a suction duct. The suction pipe 30 is connected to the suction port 31 and includes a buffer area 55 with a groove. The buffer area 55 is connected to the overflow port 41 and is used to store overflowing cleaning fluid. The buffer area 55 is located on the suction pipe 50, specifically near the suction port 31. The distance from the lowest point of the buffer area 55 to the suction port 31 is greater than or equal to 4 mm and less than or equal to 15 mm.

[0078] The wastewater tank 10 of this application is used in a cleaning device 100, which is a handheld floor scrubber. Specifically, the wastewater tank 10 is detachably mounted on the middle frame 20. The wastewater tank 10 is used to collect wastewater generated when the handheld floor scrubber cleans the surface to be cleaned, as well as garbage on the surface. The structure of the wastewater tank 10 of this application is the same as that of the wastewater tank 10 in the first and second aspects, and will not be described in detail here.

[0079] The wastewater tank 10 is detachably mounted on the middle frame 20. After the wastewater tank 10 is filled with a certain amount of waste, the user can remove the wastewater tank 10 from the middle frame 20, drain the wastewater from the wastewater tank 10, and manually clean the wastewater tank 10.

[0080] The chassis 30 is used for direct contact with the surface to be cleaned. The chassis is equipped with a cleaning component 33, which can perform operations such as wiping the surface to be cleaned, sucking up wastewater, and collecting garbage. The middle frame 20 and the chassis 30 are rotatably connected. The user can control the chassis 30 by holding the handle located on the top of the middle frame and adjusting the middle frame 20 at different angles, thereby realizing the forward, backward, and left and right turning movements of the chassis.

[0081] The clean water tank 40 is used to store the cleaning solution. The cleaning solution can be used during the cleaning process of the handheld floor scrubber on the surface to be cleaned and / or during the cleaning process of the handheld floor scrubber on the suction pipe 50 and the wastewater tank 10. Please further combine... Figure 10 The clean water tank 40 is provided with an overflow port 41, which is an opening structure for the cleaning fluid in the clean water tank 40 to overflow from the clean water tank 40 to the outside of the clean water tank 40. The overflow port 41 penetrates the clean water tank 40 to form a communication path between the outside of the clean water tank 40 and the inside of the clean water tank 40.

[0082] The suction pipe 50 is used to extract wastewater and debris generated during the cleaning of the surface. The suction pipe 50 is mounted on the chassis 30, placing it close to the surface for more direct suction of dirt. The suction pipe 50 includes a suction port 31 that connects to the outside. Wastewater and debris enter the suction pipe through the suction port 31, passing through the suction pipe 50, the connecting pipe 25, and the suction pipe 13, ultimately entering the receiving cavity 111 of the wastewater tank 10. Some of the wastewater and debris will remain in the suction pipe 50, the connecting pipe 25, the suction pipe 13, and the wastewater tank 10.

[0083] In this application, the suction pipe 50 is provided with a buffer area 55, which is specifically located near the suction port 31. The distance from the lowest point of the buffer area 55 to the suction port 31 is greater than or equal to 4 mm and less than or equal to 15 mm. The buffer area 55 has a groove, which is a spatial structure for temporarily storing sewage, garbage, and cleaning fluid. When cleaning fluid overflows from the overflow port 41 and flows into the buffer area 55, the cleaning fluid is stored in the groove. When the blower 70 is turned on, this portion of the cleaning fluid can be drawn into the receiving cavity 111 to clean the sewage tank 10.

[0084] Specifically, the suction port 31 is an opening in the chassis 30 near the surface to be cleaned, allowing dirt to enter the chassis 30. The suction port 31 is connected to the suction pipe 50. In some embodiments, the suction port 31 can be the inlet of the suction pipe 50, i.e., the inlet of the suction duct. In other embodiments, the suction port 31 is formed by other structures of the chassis 30 and is closer to the surface to be cleaned than the inlet of the suction pipe 50; in this case, the suction port 31 is connected to the suction duct. When the cleaning device 100 cleans the surface to be cleaned, the cleaning component 33 cleans the surface and generates some wastewater. The negative pressure generated after the fan 70 is started causes the wastewater and debris on the surface to be cleaned to be carried by the gas and enter the suction duct through the suction port 31.

[0085] The buffer zone 55 is located close to the suction port 31. Accordingly, the buffer zone 55 and the suction port 31 are relatively close. When the cleaning fluid overflowing from the overflow port 41 flows into the buffer zone 55, the cleaning fluid is stored in the buffer zone 55. When the blower 70 is turned on, it draws this part of the cleaning fluid into the suction pipe 50. Because the buffer zone 55 and the suction port 31 are relatively close, the cleaning fluid can flow out from the buffer zone 55 and flow through the entire suction pipe 50, so the suction pipe 50 can be almost completely cleaned.

[0086] The distance from the lowest point of the buffer zone 55 to the suction port 31 is any value between 4mm and 15mm, such as 6mm, 10mm, or 12mm. If the distance from the lowest point of the buffer zone 55 to the suction port 31 is less than 4mm, the distance between the buffer zone 55 and the suction port 31 is too small. In this case, the cleaning fluid in the buffer zone 55 may flow out through the suction port 31 to the outside of the chassis 30 if the storage volume is large. Other structures in the cleaning equipment 100 and the parking area of ​​the cleaning equipment 100 may be contaminated by the leaked cleaning fluid. If the distance from the lowest point of the buffer zone 55 to the suction port 31 is greater than 15mm, then the distance between the buffer zone 55 and the suction port 31 is too large. In this case, during the process of the cleaning fluid being driven by the gas generated by the blower 70, the area through which the cleaning fluid can flow in the suction pipe 50 is limited. There will be a large area of ​​the suction pipe 50 that has not been flushed between the suction port 31 and the buffer zone 55. The suction pipe 50 can only be cleaned locally, resulting in incomplete cleaning. In the part of the suction pipe 50 that the cleaning fluid has not passed through, there may be residues of garbage and / or sewage, which may cause foul odors. Therefore, the distance between the buffer zone 55 and the suction port 31 is within the range mentioned above. This can prevent the cleaning fluid from overflowing from the buffer zone 55 to the outside of the chassis 30, ensuring that there is no leakage of cleaning fluid in other structures of the cleaning equipment 100 and the parking area of ​​the cleaning equipment 100. At the same time, it can ensure that the cleaning fluid cleans a larger area of ​​the suction pipe 50, making the cleaning process of the suction pipe 50 more thorough.

[0087] In summary, the cleaning equipment 100 of this application sets the buffer zone 55 near the suction port 31 of the suction pipe 50, and the distance from the lowest point of the buffer zone 55 to the suction port 31 is greater than or equal to 4 mm and less than or equal to 15 mm. At this time, the cleaning fluid flowing out of the buffer zone 55 can be stored relatively stably in the buffer zone 55, and when the blower 70 flows through the entire suction pipe 50, the suction pipe 50 can be cleaned more thoroughly, and no garbage and / or sewage will remain, and the suction pipe 50 will not produce a foul odor.

[0088] Please refer to Figures 7 to 9Thirdly, this application provides a cleaning device 100. The cleaning device 100 includes a wastewater tank 10, a middle frame 20, a chassis 30, and a clean water tank 40, as described in any of the above embodiments. The wastewater tank 10 is detachably mounted on the middle frame 20. The middle frame 20 is connected to the chassis 30. The clean water tank 40 has an overflow port 41 and is configured to store cleaning fluid. The chassis 30 has a suction port 31, a cleaning assembly 33, and a suction pipe 50. The suction pipe 30 communicates with the suction port 31 and includes a buffer area 55. The buffer area 55 has a groove and communicates with the overflow port 41. The buffer area 55 is used to store overflowed cleaning fluid. The buffer area 55 is disposed on the suction pipe 50, specifically near the suction port 31. The distance from the lowest point of the buffer area 55 to the suction port 31 is greater than or equal to 4 mm and less than or equal to 15 mm.

[0089] The wastewater tank 10 of this application is used in the cleaning equipment 100. Specifically, the wastewater tank 10 is detachably mounted on the middle frame 20. The wastewater tank 10 is used to collect wastewater generated when the cleaning equipment 100 cleans the surface to be cleaned, as well as garbage on the surface to be cleaned. The structure of the wastewater tank 10 of this application is the same as that of the wastewater tank 10 in the first and second aspects, and will not be described in detail here.

[0090] Specifically, cleaning equipment 100 is a device used to remove stains, dust, debris, or microorganisms to maintain environmental hygiene. Cleaning equipment 100 can be applied in home, commercial, or industrial settings to perform cleaning tasks on surfaces. Cleaning equipment 100 can be, but is not limited to, a handheld floor scrubber, carpet cleaner, handheld vacuum cleaner, or handheld floor polisher, etc. This application uses a handheld floor scrubber as an example for illustration.

[0091] The middle frame 20 is used to mount the wastewater tank 10 and connects to the chassis 30. Additionally, a handle (not shown) is provided on the top of the middle frame 20 for the user to hold, allowing the user to operate the cleaning equipment 100 to clean the surface to be cleaned. Preferably, the wastewater tank 10 is detachably mounted on the middle frame 20. After the wastewater tank 10 is filled with a certain amount of waste, the user can remove the wastewater tank 10 from the middle frame 20, drain the wastewater from the tank 10, and manually clean the tank 10. The chassis 30 is used for direct contact with the surface to be cleaned. The chassis is equipped with a cleaning component 33, which can perform operations such as scrubbing the surface to be cleaned, absorbing wastewater, and collecting waste. Depending on the function of the cleaning equipment 100, the chassis 30 may also include various functional structures, such as the cleaning component 33 for removing stains, a water spray device for spraying cleaning fluid onto the surface to be cleaned, and a drive device for movement. The middle frame 20 and the chassis 30 are rotatably connected. Users can control the chassis 30 by holding the handle set on the top of the middle frame and adjusting the middle frame 20 at different angles, so as to realize the forward, backward and left and right turning movements of the chassis.

[0092] The clean water tank 40 is used to store the cleaning solution. The cleaning solution can be used in the cleaning process of the cleaning equipment 100 on the surface to be cleaned and / or in the cleaning process of the cleaning equipment 100 on the suction pipe 50 and the wastewater tank 10. Please further combine... Figure 10 The clean water tank 40 is provided with an overflow port 41, which is an opening structure for the cleaning fluid in the clean water tank 40 to overflow from the clean water tank 40 to the outside of the clean water tank 40. The overflow port 41 penetrates the clean water tank 40 to form a communication path between the outside of the clean water tank 40 and the inside of the clean water tank 40.

[0093] The suction pipe 50 is used to extract wastewater and debris generated during the cleaning of the surface. The suction pipe 50 is mounted on the chassis 30, placing it close to the surface for more direct suction of dirt. The suction pipe 50 includes a suction port 31 that connects to the outside. Wastewater and debris enter the suction pipe through the suction port 31, pass through the suction pipe 50 and the suction pipe 13, and finally enter the receiving cavity 111 of the wastewater tank 10. Some of the wastewater and debris will remain in the suction pipe 50, the suction pipe 13, and the wastewater tank 10.

[0094] In this application, the suction pipe 50 is provided with a buffer area 55, which is specifically located near the suction port 31 of the suction pipe 50. The distance from the lowest point of the buffer area 55 to the suction port 31 is greater than or equal to 4 mm and less than or equal to 15 mm.

[0095] The buffer zone 55 has grooves, which are spatial structures used for temporary storage, specifically for temporarily storing sewage, garbage, and cleaning fluid. When cleaning fluid overflows from the overflow outlet 41 and flows into the buffer zone 55, the cleaning fluid is stored in the grooves. When the blower 70 is turned on, this portion of the cleaning fluid can be drawn into the receiving cavity 111 to clean the sewage tank 10.

[0096] In this application, when the sewage tank 10 is installed on the middle frame 20, the sewage suction port 31 of the chassis 30, which is connected to the outside, is connected to the outlet 1313 of the sewage suction pipe of the sewage tank 10 to form a suction air duct. Under the negative pressure generated by the fan 70, the sewage and / or garbage generated from cleaning the surface to be cleaned can be sucked into the receiving cavity 111 of the sewage tank 10.

[0097] Specifically, in some embodiments, the middle frame 20 is provided with a connecting pipe 25. When the sewage tank 10 is installed on the middle frame 20, the connecting pipe 25 connects the sewage suction pipe 50 and the sewage suction pipe 13. The sewage suction pipe 13, the connecting pipe 25, and the sewage suction pipe 50 together form a suction duct. In other embodiments, when the sewage tank 10 is installed on the middle frame 20, the sewage suction pipe 13 of the sewage tank 10 is connected to the sewage suction pipe 50 of the chassis 30. The sewage suction pipe 13 and the sewage suction pipe 50 together form a suction duct.

[0098] Specifically, the suction port 31 is an opening in the chassis 30 near the surface to be cleaned, allowing dirt to enter the chassis 30. The suction port 31 is connected to the suction pipe 50. In some embodiments, the suction port 31 can be the inlet of the suction pipe 50, i.e., the inlet of the suction duct. In other embodiments, the suction port 31 is formed by other structures of the chassis 30 and is closer to the surface to be cleaned than the inlet of the suction pipe 50; in this case, the suction port 31 is connected to the suction duct. When the cleaning device 100 cleans the surface to be cleaned, the cleaning component 33 cleans the surface and generates some wastewater. The negative pressure generated after the fan 70 is started causes the wastewater and debris on the surface to be cleaned to be carried by the gas and enter the suction duct through the suction port 31.

[0099] The buffer zone 55 is located close to the suction port 31. Accordingly, the buffer zone 55 and the suction port 31 are relatively close. When the cleaning fluid overflowing from the overflow port 41 flows into the buffer zone 55, the cleaning fluid is stored in the buffer zone 55. When the blower 70 is turned on, it draws this part of the cleaning fluid into the suction pipe 50. Because the buffer zone 55 and the suction port 31 are relatively close, the cleaning fluid can flow out from the buffer zone 55 and flow through the entire suction pipe 50, so the suction pipe 50 can be almost completely cleaned.

[0100] The distance from the lowest point of the buffer zone 55 to the suction port 31 is any value between 4mm and 15mm, such as 6mm, 10mm, or 12mm. If the distance from the lowest point of the buffer zone 55 to the suction port 31 is less than 4mm, the distance between the buffer zone 55 and the suction port 31 is too small. In this case, the cleaning fluid in the buffer zone 55 may flow out through the suction port 31 to the outside of the chassis 30 if the storage volume is large. Other structures in the cleaning equipment 100 and the parking area of ​​the cleaning equipment 100 may be contaminated by the leaked cleaning fluid. If the distance from the lowest point of the buffer zone 55 to the suction port 31 is greater than 15mm, then the distance between the buffer zone 55 and the suction port 31 is too large. In this case, during the process of the cleaning fluid being driven by the gas generated by the blower 70, the area through which the cleaning fluid can flow in the suction pipe 50 is limited. There will be a large area of ​​the suction pipe 50 that has not been flushed between the suction port 31 and the buffer zone 55. The suction pipe 50 can only be cleaned locally, resulting in incomplete cleaning. In the part of the suction pipe 50 that the cleaning fluid has not passed through, there may be residues of garbage and / or sewage, which may cause foul odors. Therefore, the distance between the buffer zone 55 and the suction port 31 is within the range mentioned above. This can prevent the cleaning fluid from overflowing from the buffer zone 55 to the outside of the chassis 30, ensuring that there is no leakage of cleaning fluid in other structures of the cleaning equipment 100 and the parking area of ​​the cleaning equipment 100. At the same time, it can ensure that the cleaning fluid cleans a larger area of ​​the suction pipe 50, making the cleaning process of the suction pipe 50 more thorough.

[0101] In summary, the cleaning equipment 100 of this application sets the buffer zone 55 near the suction port 31 of the suction pipe 50, and the distance from the lowest point of the buffer zone 55 to the suction port 31 is greater than or equal to 4 mm and less than or equal to 15 mm. At this time, the cleaning fluid flowing out of the buffer zone 55 can be stored relatively stably in the buffer zone 55, and when the blower 70 flows through the entire suction pipe 50, the suction pipe 50 can be cleaned more thoroughly, and no garbage and / or sewage will remain, and the suction pipe 50 will not produce a foul odor.

[0102] Since the cleaning device 100 in this application embodiment includes a sewage tank 10, it is understood that the cleaning device 100 has at least the same beneficial effects as the sewage tank 10 described above. Therefore, the beneficial effects of the cleaning device 100 can be referred to the beneficial effects of the sewage tank 10 described above, and will not be repeated here.

[0103] Please refer to Figure 9 and Figure 10 In some embodiments, the overflow outlet 41 is located on the top or side of the clean water tank 40.

[0104] Specifically, since the overflow outlet 41 is a structure used to allow the cleaning fluid stored in the clean water tank 40 to overflow into the buffer area 55, the location of the overflow outlet 41 directly affects the amount of cleaning fluid overflowing through the overflow outlet 41 and the amount of remaining cleaning fluid stored in the clean water tank 40. In some embodiments, the overflow outlet 41 is located at the top of the clean water tank 40. In this case, the cleaning fluid will only overflow into the buffer area 55 through the overflow outlet 41 when the clean water tank 40 is completely filled with cleaning fluid. In this case, the amount of cleaning fluid stored in the clean water tank 40 is relatively large, and the overflow process of the cleaning fluid has a certain waiting time, which can be flexibly controlled by the user.

[0105] In some embodiments, the overflow port 41 is located on the side of the clean water tank 40. In this case, the overflow process of the cleaning fluid is related to the location of the overflow port 41. The closer the overflow port 41 is to the top, the longer the waiting time for the cleaning fluid to overflow, and the more cleaning fluid is stored in the clean water tank 40. In this case, when the level of the cleaning fluid stored in the clean water tank 40 is higher than the overflow port 41, the cleaning fluid overflows through the overflow port 41 into the buffer area 55. At this time, the amount of cleaning fluid stored in the clean water tank 40 and the overflow process of the cleaning fluid can be set more flexibly according to the application scenario of the cleaning equipment 100.

[0106] Please refer to Figure 9 and Figure 10 In some embodiments, the chassis 30 of the cleaning device 100 also includes an overflow pipe 60, which connects the overflow outlet 41 and the buffer area 55. The outlet of the overflow pipe 60 is located above the buffer area 55. Specifically, the overflow pipe 60 includes an outlet and an inlet, wherein the inlet of the overflow pipe 60 is connected to the overflow outlet 41, and the outlet of the overflow pipe 60 is connected to the suction pipe 50, so that the cleaning fluid overflowing from the overflow outlet 41 enters the overflow pipe 60 through the inlet of the overflow pipe 60, and then flows into the buffer area 55 through the outlet of the overflow pipe 60. When the outlet of the overflow pipe 60 is located above the buffer area 55, the cleaning fluid flowing out of the outlet of the overflow pipe 60 can be accurately injected into the buffer area 55, and there will be no leakage of cleaning fluid to the outside of the suction pipe 50. At this time, there will be no leakage of cleaning fluid in other structures of the cleaning device 100 or in the parking area of ​​the cleaning device 100, resulting in a longer service life of the cleaning device 100 and a better user experience.

[0107] Please refer to Figure 9 and Figure 11 In some embodiments, the middle frame 20 further includes a liquid inlet 21 and a conduit assembly 23. The liquid inlet 21 is used to allow external liquid to flow in. The conduit assembly 23 is configured to connect the liquid inlet 21 and the injection port 113.

[0108] Specifically, the inlet 21 is an opening structure for allowing liquids from outside the cleaning device 100, such as cleaning fluid provided by the cleaning base station 300 (described below), cleaning fluid directly injected by the user, and cleaning fluid provided by other devices (e.g., faucets), to flow into the cleaning device 100. The pipe assembly 23 is used to allow the liquid flowing from the inlet 21 to flow into the inlet 113. In some embodiments, the pipe assembly 23 may be a single pipe or more pipes disposed within the middle frame 20. In other embodiments, the pipe assembly 23 may be a sealed space structure within the middle frame 20, enclosed by certain structures, allowing liquid to flow through.

[0109] With the pipe assembly 23 connected to the inlet 21 and the injection port 113, external liquid enters the pipe assembly 23 from the inlet 21, then flows through the pipe assembly 23 and reaches the injection port 113, then enters the pipe assembly 18 through the injection port 113, then flows through the pipe assembly 18 and reaches the spray port 14, and finally is sprayed out through the spray port 14 to clean the inner wall of the sewage tank 10 and other structural surfaces inside the sewage tank 10 in the second area 1213 or in the n-1 areas mentioned above.

[0110] Please refer to Figure 9 and Figure 11 In some embodiments, the suction pipe 13 and the extraction pipe 50 together form an extraction air duct. The cleaning device 100 also includes a fan 70. The fan 70 is disposed on the top 123 of the cover and is configured to draw cleaning fluid from the buffer zone 55 through the extraction air duct to the outlet 1333 of the suction pipe.

[0111] Specifically, the blower 70 is used to draw wastewater generated when the cleaning equipment 100 cleans the surface to be cleaned, debris on the surface to be cleaned, or cleaning fluid located in the buffer zone 55 into the water tank. The blower 70 is located on the top 123 of the cover and communicates with the receiving cavity 111 of the wastewater tank 10 through the through hole 125 on the cover 12. The suction pipe 13 in the receiving cavity 111 is tightly fitted with the suction pipe 50 so that the suction duct formed by the suction pipe 13 and the suction pipe 50 has only openings at both ends and no gaps in the middle.

[0112] In other embodiments, the middle frame 20 is provided with a connecting pipe 25. When the wastewater tank 10 is installed on the middle frame 20, the suction pipe 13, the connecting pipe 25, and the suction pipe 50 together form a suction duct. The cleaning device 100 also includes a blower 70. The blower 70 is disposed on the top 123 of the cover and is configured to draw cleaning fluid from the buffer zone 55 through the suction duct to the outlet 1333 of the suction pipe.

[0113] Specifically, the blower 70 is used to draw wastewater, debris on the surface to be cleaned, or cleaning fluid located in the buffer zone 55 into the water tank when the cleaning equipment 100 cleans the surface to be cleaned. The blower 70 is located on the top 123 of the cover and communicates with the receiving cavity 111 of the wastewater tank 10 through the through hole 125 on the cover 12. The suction pipe 13 in the receiving cavity 111 is tightly fitted with the connecting pipe 25 and the suction pipe 50 so that the suction duct formed by the suction pipe 13, the connecting pipe 25, and the suction pipe 50 has only openings at both ends and no gaps in the middle.

[0114] When the cleaning equipment 100 cleans the surface to be cleaned, the blower 70 is activated, drawing gas from the wastewater tank 10, thus creating a negative pressure in the wastewater tank 10. Under this negative pressure, the wastewater and debris on the surface to be cleaned are carried by the gas and flow into the wastewater tank 10 through the suction duct. After the fluid enters the wastewater tank 10, the wastewater and debris in the fluid separate from the gas. The gas is drawn in by the blower 70, and the wastewater and debris are deposited in the tank 11.

[0115] When cleaning the wastewater tank 10, the blower 70 is activated to extract the gas from the wastewater tank 10, thus creating a negative pressure in the wastewater tank 10. Under negative pressure, the cleaning fluid located in the buffer zone 55 is carried by the gas and flows into the wastewater tank 10 through the suction duct. After the cleaning fluid enters the wastewater tank 10, it can effectively clean the surface of the housing 11 corresponding to the outlet 1333 of the suction pipe and the surface of other internal structures of the wastewater tank 10, that is, the surface of the housing 11 corresponding to the first region 1211 of the wastewater tank 10 in the first aspect and the surface of other internal structures of the wastewater tank 10, or the surface of the housing 11 corresponding to the nth region of the wastewater tank 10 in the second aspect and the surface of other internal structures of the wastewater tank 10.

[0116] Therefore, the blower 70 can create a negative pressure in the receiving cavity 111, so that the cleaning equipment 100 can draw the wastewater generated during cleaning of the surface to be cleaned, the garbage on the surface to be cleaned, or the cleaning fluid located in the buffer zone 55 into the wastewater tank 10 through the suction duct. The blower 70 uses negative pressure to draw the generated wastewater and garbage into the wastewater tank 10 through the suction duct to achieve surface cleaning. Furthermore, as the wastewater and garbage flow through the suction duct and into the wastewater tank 10, some wastewater and garbage will remain in the suction duct and the wastewater tank. Secondly, the blower 70 uses negative pressure to draw the cleaning fluid in the buffer zone 55 into the sewage tank 10 through the suction duct. This is to clean the sewage and garbage remaining on at least part of the walls of the suction duct and the sewage tank 10. The cleaning equipment 100 uses the blower 70 to generate negative pressure to draw the cleaning fluid in the buffer zone 55 into the sewage tank. This process can achieve cleaning of at least part of the sewage pipe 50 and the sewage suction channel 13 in the suction duct, as well as the sewage tank 10. The cleaning effect is good and it can clean the entire sewage suction link of the cleaning equipment 100.

[0117] Please refer to Figure 9 and Figure 11 In some embodiments, the bottom of the wastewater tank 10 is provided with a drain outlet 115 and a sealing cover 117. The sealing cover 117 is disposed at the drain outlet 115 and is configured to open or close the drain outlet 115. When the sealing cover 117 opens the drain outlet 115 to allow the garbage and / or wastewater in the receiving cavity 111 to be discharged from the drain outlet 115, the blower 70 is turned on.

[0118] Please combine further Figure 5 and Figure 6 In the above embodiment, the drain outlet 115 is a structure for discharging sewage and / or garbage deposited in the sewage tank 10. The drain outlet 115 is located at the bottom of the sewage tank 10 so that the sewage and / or garbage deposited in the sewage tank 10 can be fully discharged through the drain outlet 115, reducing the residue of sewage and / or garbage in the sewage tank 10 and preventing the generation of foul odors. The sealing cover 117 is used to seal the drain outlet 115 to prevent garbage and / or sewage deposited in the sewage tank 10 from leaking to the outside of the sewage tank 10 when no sewage discharge is being performed, thus preventing contamination and damage to other structures of the cleaning equipment 100. The sealing cover 117 is located at the drain outlet 115 and is movable relative to the drain outlet 115 to selectively open or close the drain outlet 115.

[0119] With the sealing cover 117 closing the drain port 115, the sealing cover 117 and the drain port 115 fit tightly together to prevent leakage of garbage and / or sewage. With the sealing cover 117 opening the drain port 115, the garbage and / or sewage in the receiving cavity 111 are discharged from the drain port 115. At this time, the blower 70 is turned on and a negative pressure is formed in the receiving cavity 111. The blower 70 draws air into the receiving cavity 111, causing the sewage at the bottom of the sewage tank 10 to be agitated with the air drawn in by the blower 70, so as to further clean the inner wall of the tank 11 and fully discharge the garbage and / or sewage from the drain port 115.

[0120] Please refer to Figure 7 and Figure 11 In some embodiments, the cleaning device 100 is specifically a handheld floor scrubber. The handheld floor scrubber is configured on the cleaning base station 300 for self-cleaning maintenance. After cleaning the surface, the handheld floor scrubber needs to undergo self-cleaning maintenance to prevent space occupation, collision damage, and obstruction of passage due to haphazard placement. The cleaning base station 300 is provided with a docking space (not shown in the figure) for the handheld floor scrubber to dock and be maintained.

[0121] Please refer to Figure 7 and Figure 11Fourthly, embodiments of this application provide a cleaning system 1000. The cleaning system 1000 includes the cleaning equipment 100 and the cleaning base station 300 described in any of the above embodiments, the cleaning base station 300 being used to maintain the cleaning equipment 100.

[0122] Specifically, in the above embodiments, the cleaning base station 300 is used in conjunction with the cleaning equipment 100. After cleaning the surface to be cleaned, the cleaning equipment 100 discharges the solid-liquid mixture of garbage and sewage into the cleaning base station 300. In addition, the cleaning base station 300 can also be used to maintain the cleaning equipment 100. For example, the cleaning base station 300 can provide a parking space for the cleaning equipment 100, discharge sewage from the cleaning equipment 100, charge the cleaning equipment 100, clean or maintain at least part of the structure of the cleaning equipment 100, and replenish cleaning fluid to the cleaning equipment 100.

[0123] Since the cleaning system 1000 in this application embodiment includes a cleaning device 100 and a wastewater tank 10, it is understood that the cleaning system 1000 includes at least the same beneficial effects as the cleaning device 100 and the wastewater tank 10. Therefore, the beneficial effects of the cleaning system 1000 are described above with reference to the beneficial effects of the cleaning device 100 and the wastewater tank 10, and will not be repeated here.

[0124] Please refer to Figure 9 and Figure 11 In some embodiments, the cleaning base station 300 includes at least one of the following three modes: spray washing mode, overflow washing mode, and boiling washing mode. In spray washing mode, the cleaning fluid in the cleaning base station 300 flows through the inlet 113 and pipe assembly 23 of the wastewater tank 10 to the spray nozzle 14, and is sprayed from the spray nozzle 14 onto at least a portion of the inner wall of the housing 11 for cleaning. In overflow washing mode, the fan 70 in the cleaning device 100 draws the cleaning fluid from the buffer zone 55 of the cleaning device 100 through the suction duct to the outlet 1333 of the suction pipe, and discharges it from the outlet 1333 of the suction pipe to at least a portion of the inner wall of the housing 11 for cleaning. In boiling washing mode, the sealing cover 117 of the wastewater tank 10 opens the drain port 115, the fan 70 in the cleaning device 100 is turned on, and the garbage and / or wastewater in the receiving cavity 111 is drawn through the suction duct, causing agitation, and discharged through the drain port 115 to the outside of the wastewater tank 10. The spray washing mode and the boiling washing mode are executed simultaneously, while the overflow washing mode is executed after the spray washing mode.

[0125] Please combine further Figure 5 and Figure 6 Depending on the cleaning method, the cleaning base station 300 has at least three cleaning modes for the wastewater tank 10 in the cleaning equipment 100: spray cleaning mode, overflow cleaning mode, and boiling cleaning mode.

[0126] When the cleaning base station 300 uses a spray washing mode to clean the wastewater tank 10, the cleaning fluid in the cleaning base station 300 enters the pipe assembly 23 from the inlet 21, then flows through the pipe assembly 23 and reaches the injection port 113, then enters the pipeline assembly 18 through the injection port 113, then flows through the pipeline assembly 18 and reaches the spray port 14, and finally is sprayed out through the spray port 14 to clean the surfaces of the tank 11 corresponding to the second area 1213 in the first aspect of the wastewater tank 10 and other internal structures of the wastewater tank 10, or the surfaces of the tank 11 corresponding to the n-1 areas in the second aspect of the wastewater tank 10 and other internal structures of the wastewater tank 10. Figure 11 As shown by the solid arrow, the direction of the arrow indicates the flow direction of the cleaning fluid.

[0127] When the cleaning base station 300 uses an overflow washing mode to clean the sewage tank 10, the fan 70 extracts gas from the sewage tank 10 to put the sewage tank 10 under negative pressure. At least part of the cleaning liquid in the clean water tank 40 overflows through the overflow port 41 and flows into the buffer area 55 through the overflow pipe 60. At this time, the cleaning liquid in the buffer area 55 is driven by the gas and passes through the suction duct to the outlet 1333 of the suction pipe, and is discharged from the outlet 1333 of the suction pipe into the sewage tank 10 to rinse the surface of the housing 11 corresponding to the first area 1211 in the sewage tank 10 and the surface of other internal structures of the sewage tank 10, or the surface of the housing 11 corresponding to the nth area in the sewage tank 10 and the surface of other internal structures of the sewage tank 10. Figure 11 As shown by the dashed arrow, the direction of the arrow indicates the flow direction of the cleaning fluid.

[0128] Furthermore, in the overflow washing mode, in some embodiments, the suction duct consists of a suction pipe 50 and a suction pipe 13. Therefore, the cleaning fluid flows sequentially through the suction pipe 50 and the suction pipe 13, achieving a complete cleaning of the surfaces of the suction pipe 50, the suction pipe 13, and at least part of the housing 11 and other internal structures of the wastewater tank 10 of the cleaning equipment 100, resulting in a more thorough cleaning. In other embodiments, the middle frame 20 is provided with a connecting pipe 25. When the wastewater tank 10 is installed on the middle frame 20, the suction duct consists of a suction pipe 50, a connecting pipe 25, and a suction pipe 13. Therefore, the cleaning fluid flows sequentially through the suction pipe 50, the connecting pipe 25, and the suction pipe 13, achieving a complete cleaning of the surfaces of the suction pipe 50, the connecting pipe 25, the suction pipe 13, and at least part of the housing 11 and other internal structures of the wastewater tank 100, resulting in a more thorough cleaning. When using the overflow washing mode and the spray washing mode, all the garbage-adhered surfaces of the sewage tank 10 are thoroughly cleaned, the cleaning process is comprehensive and thorough, and the cleaning effect is good.

[0129] When the cleaning base station 300 uses the boiling wash mode to clean the sewage tank 10, the sealing cover 117 of the sewage tank 10 opens the drain port 115, the blower 70 is turned on and a negative pressure is formed in the receiving cavity 111, so that the sewage at the bottom of the sewage tank 10 is agitated with the air drawn in by the blower 70, so as to further clean the inner wall of the tank 11 and fully discharge the garbage and / or sewage from the drain port 115. Figure 11 The dotted arrow indicates the direction of the cleaning fluid flow.

[0130] When the cleaning base station 300 cleans the sewage tank 10, the cleaning base station 300 first simultaneously executes the spray washing mode and the boiling washing mode to remove most of the garbage and / or sewage adhering to the surface of the tank body 11 and other internal structures of the sewage tank 10. Then, the cleaning base station 300 executes the overflow washing mode to clean and discharge the garbage and / or sewage that have not been effectively cleaned and have not been fully discharged from the bottom. Therefore, the self-cleaning process of the cleaning base station 300 cleans the sewage tank 10 more thoroughly, and all surfaces in the sewage tank 10 are effectively cleaned. There is no residue of garbage and / or sewage, and the cleaning equipment 100 does not produce any odor problems.

[0131] Please refer to Figure 9 and Figure 11 In some embodiments, in the overflow washing mode, the fan 70 outputs power at a first power for a first preset duration and at a second power for a second preset duration. The first preset duration is shorter than the second preset duration, and the first power is less than the second power.

[0132] Specifically, when the cleaning base station 300 uses an overflow washing mode to clean the wastewater tank 10, the operation of the blower 70 includes at least two stages. The duration of the first stage is a first preset duration, during which the blower 70 outputs power at a first power level. The duration of the second stage is a second preset duration, during which the blower 70 outputs power at a second power level. The first preset duration, the second preset duration, the first power, and the second power are all fixed known values. These fixed known values ​​can be set before the cleaning system 1000 leaves the factory, or they can be set by the user through an input interface after the cleaning system 1000 leaves the factory.

[0133] To ensure that the blower 70 can more fully draw the cleaning fluid into the receiving cavity 111 and that the amount of cleaning fluid entering the receiving cavity 111 is sufficient, the cleaning system 1000 is configured with a first preset duration that is shorter than a second preset duration, and a first power that is shorter than a second power. Therefore, in the first stage, the blower 70 operates at a lower power for the first preset duration, so that at least a portion of the cleaning fluid is pre-stored in the suction duct. In the second stage, the blower 70 operates at a higher power for the second preset duration, so that the cleaning fluid pre-stored in the suction duct and the newly entered cleaning fluid in the buffer zone 55 flow together into the receiving cavity 111. At this time, the amount of cleaning fluid entering the receiving cavity 111 is sufficient, and the large flow of cleaning fluid can fully clean the surfaces of the housing 11 corresponding to the outlet 1333 of the suction pipe and other internal structures of the wastewater tank 10.

[0134] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Furthermore, other implementation methods can be derived from the above embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

[0135] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A sewage tank, characterized in that, include: Box; A cover is disposed on the top of the box body and together with the box body, forms a receiving cavity; A suction pipe, wherein the suction pipe is disposed within the receiving cavity and serves to connect the outside of the sewage tank to the receiving cavity; and A spray nozzle is connected to an external water source for cleaning at least a portion of the inner wall of the tank using the external water source. The bottom wall of the cover includes a first region and a second region; the first region is the projection of the space between the outlet of the suction pipe and the inner wall of the box corresponding to the outlet of the suction pipe onto the bottom wall of the cover; the second region is the area of ​​the bottom wall of the cover other than the first region. The spray nozzle is located only in the second area or the spray range of the spray nozzle only covers the second area.

2. The sewage tank according to claim 1, characterized in that, The cover has a through hole connecting the top and bottom wall of the cover, and the sewage tank further includes: A partition is disposed on the bottom wall of the cover, spaced from the bottom of the box, and configured to prevent liquid in the receiving cavity from entering the through hole.

3. The sewage tank according to claim 2, characterized in that, The partition divides the bottom wall of the cover into n regions, where n ≥ 2 and n is an integer; The outlet of the suction pipe is located in the space below the bottom wall of the cover corresponding to one of the n regions; The remaining n-1 areas are each provided with at least one of the spray nozzles.

4. A sewage tank, characterized in that, include: Box; A cover is disposed on the top of the box body and together with the box body forms a receiving cavity, and the cover body is provided with a through hole communicating with the top and bottom walls of the cover body; A partition is disposed on the bottom wall of the cover, spaced apart from the bottom of the box, and configured to prevent liquid in the receiving cavity from entering the through hole. The partition divides the bottom wall of the cover into n regions, where n≥2 and n is an integer. Spray nozzles are provided on the bottom wall of the cover, and each of the n-1 areas is provided with a spray nozzle. The spray nozzles are connected to an external water source for the wastewater tank, so as to use the external water source to clean at least a portion of the inner wall of the tank. A suction pipe is disposed within the receiving cavity and is used to connect the outside of the sewage tank with the receiving cavity. The outlet of the suction pipe is located in the space corresponding to the nth region.

5. The sewage tank according to any one of claims 1-4, characterized in that, The outlet of the suction pipe faces the wall of the box.

6. The sewage tank according to claim 5, characterized in that, The suction pipe includes: A suction pipe, comprising an inlet and an outlet, and at least partially disposed within the receiving cavity; and A guide cover, the guide cover including an inlet and an outlet, and disposed on the side of the cover facing the receiving cavity; The outlet of the suction pipe is connected to the inlet of the guide cover.

7. The sewage tank according to any one of claims 1-4, characterized in that, Along the direction of liquid outflow, the cross-sectional area of ​​the spray nozzle gradually decreases; and / or, The spray range of the liquid sprayed from the spray nozzle is fan-shaped.

8. The sewage tank according to any one of claims 1-4, characterized in that, Also includes: The mounting component is provided with a mounting cavity and an opening, the opening communicating with the mounting cavity and the receiving cavity; and A flow guide is disposed within the mounting cavity and together with the mounting component forms the spray nozzle, which communicates with the opening.

9. The sewage tank according to claim 8, characterized in that, Also includes: The inlet is located in the housing and connected to an external water source. and Piping assembly, the piping assembly comprising: A first pipeline is installed inside the cover body. The first pipeline includes an inlet end and an outlet end, and the outlet end of the first pipeline is connected to the spray nozzle. and The second pipeline is disposed outside the cover and housed within the receiving cavity. The second pipeline includes an inlet end and an outlet end. The inlet end of the second pipeline is connected to the injection port, and the outlet end of the second pipeline is connected to the inlet end of the first pipeline.

10. The sewage tank according to claim 8, characterized in that, Also includes: The inlet is located in the housing and connected to an external water source. and Piping assembly, the piping assembly comprising: A first pipe is disposed within the cover body, and the first pipe includes an inlet end and an outlet end, the outlet end of the first pipe being connected to the spray nozzle; and The second pipeline is disposed outside the cover and housed within the receiving cavity. The second pipeline includes an inlet end and an outlet end. The inlet end of the second pipeline is connected to the injection port, and the outlet end of the second pipeline is connected to the inlet end of the first pipeline. The spray nozzle is provided on the path through which the second pipeline connects to the first pipeline, and the second pipeline is part of the mounting component.

11. The sewage tank according to any one of claims 1-4, 6, and 9-10, characterized in that, The wastewater tank is used in cleaning equipment, which is a floor scrubber, including: Fan; A handle, which provides a user with a grip and allows for the movement of the floor scrubber; The middle frame is provided with a connecting pipe, and the sewage tank is detachably installed on the middle frame; The chassis, wherein the mid-frame is connected to the chassis, and the chassis includes: When the sewage tank is installed on the middle frame, the connecting pipe connects the suction pipe and the sewage extraction pipe. A suction port, which is connected to the suction pipe, and Cleaning components are used to contact and clean the surface to be cleaned; A clean water tank, equipped with an overflow outlet, is configured to store cleaning fluid; The suction pipe includes: a buffer zone with a groove for storing overflowing cleaning fluid, the buffer zone being connected to the overflow outlet, the buffer zone being positioned near the suction port of the suction pipe, and the distance from the lowest point of the buffer zone to the suction port being greater than or equal to 4 mm and less than or equal to 15 mm; and, The blower is configured to: draw cleaning fluid overflowing from the clean water tank into the buffer area, the cleaning fluid flowing through the sludge suction pipe, the connecting pipe, and the suction pipe to the wastewater tank, so as to clean at least a portion of the inner walls of the sludge suction pipe, the connecting pipe, the suction pipe, and the wastewater tank using the cleaning fluid.

12. A cleaning device, characterized in that, include: The sewage tank according to any one of claims 1-10; The sewage tank is detachably mounted on the middle frame; The chassis, wherein the mid-frame is connected to the chassis, and the chassis includes: A sludge suction pipe and a sludge suction port, wherein the sludge suction port is connected to the sludge suction pipe, and Cleaning components are used to contact and clean the surface to be cleaned; A clean water tank, equipped with an overflow outlet, is configured to store cleaning fluid; The suction pipe includes a buffer zone with a groove for storing overflowing cleaning fluid. The buffer zone is connected to the overflow outlet and is located near the suction port of the suction pipe. The distance from the lowest point of the buffer zone to the suction port is greater than or equal to 4 mm and less than or equal to 15 mm.

13. The cleaning equipment according to claim 12, characterized in that, The overflow outlet is located at the top or side of the clean water tank.

14. The cleaning equipment according to claim 12, characterized in that, The chassis also includes: An overflow pipe connects the buffer area and the overflow outlet, and the outlet of the overflow pipe is located above the buffer area.

15. The cleaning equipment according to any one of claims 12-14, characterized in that, The middle frame also includes: Liquid inlet, the liquid inlet being used to allow external liquid to flow in; and A piping assembly is configured to connect the inlet and the outlet.

16. The cleaning equipment according to claim 12, characterized in that, The cleaning equipment includes: a suction duct, which is composed of a suction pipe and a suction pipe, or a suction pipe, a connecting pipe, and a suction pipe, and the connecting pipe is disposed on the middle frame. The cleaning equipment also includes: A blower, located on top of the cover, is configured to draw cleaning fluid from the buffer zone through the suction duct to the outlet of the suction pipe, thereby using the cleaning fluid to clean at least a portion of the inner walls of the suction duct and the wastewater tank.

17. The cleaning equipment according to claim 16, characterized in that, The bottom of the sewage tank is provided with a sewage outlet and a sealing cover. The sealing cover is located at the sewage outlet and is configured to open or close the sewage outlet. When the sealing cover opens the sewage outlet to allow the garbage and / or sewage in the receiving cavity to be discharged from the sewage outlet, the blower is turned on.

18. The cleaning equipment according to any one of claims 12-14 and 16-17, characterized in that, The cleaning equipment is a floor scrubber, which is configured on a cleaning base station for maintenance, and the cleaning base station includes: A docking position is provided for the floor scrubber to dock and be maintained.

19. A cleaning system, characterized in that, include: The cleaning equipment according to any one of claims 12-17; and A cleaning base station, used for maintaining the cleaning equipment.

20. The cleaning system according to claim 19, characterized in that, The clean base station includes at least one of the following three modes: Spray wash mode, overflow wash mode, and boiling wash mode; In the spray cleaning mode, the cleaning fluid in the cleaning base station flows to the spray nozzle through the inlet and pipeline assembly of the wastewater tank, and is sprayed from the spray nozzle onto at least part of the inner wall of the tank for cleaning; In the overflow washing mode, the fan in the cleaning device provides negative pressure, drawing the cleaning fluid from the buffer area through the suction duct into the receiving cavity to clean at least a portion of the inner wall of the suction duct; And / or, In the overflow washing mode, the fan in the cleaning equipment provides negative pressure, drawing the cleaning fluid through the suction duct into the receiving cavity to clean at least a portion of the inner wall of the wastewater tank. The suction duct is composed of a sludge extraction pipe, a connecting pipe, and a sludge suction pipe, or the suction duct is composed of a sludge extraction pipe and a sludge suction pipe. In the boiling wash mode, the sealing cover of the sewage tank opens the drain port, the fan in the cleaning equipment is turned on, and the garbage and / or sewage in the receiving cavity is drawn in through the suction duct to agitate it and discharged out of the sewage tank through the drain port; The spray washing mode and the boiling washing mode are executed simultaneously, and the overflow washing mode is executed after the spray washing mode.

21. The cleaning system according to claim 20, characterized in that, In the overflow washing mode, the fan outputs power at a first power for a first preset duration and at a second power for a second preset duration, wherein the first preset duration is shorter than the second preset duration and the first power is less than the second power.

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