Sewage tank, cleaning equipment and cleaning base station

Abstract

The utility model provides a sewage tank, cleaning equipment and a cleaning base station. The sewage tank comprises a sewage cavity, a tank cover, a water inlet channel and a self-cleaning mechanism, an opening is formed in the top of the sewage cavity; the box cover detachably covers the opening; the water inlet channel is arranged on the tank cover and is provided with a water outlet and a water inlet which can be connected with a clear water supply pipeline; the self-cleaning mechanism is arranged on the tank cover and located in the sewage cavity, the self-cleaning mechanism comprises a water supply port and a water spraying port, and the water supply port is communicated with the water outlet; reverse thrust generated when the clear water is sprayed out of the water spraying opening drives the self-cleaning mechanism to rotate automatically. The technical problem that an existing sewage tank is inconvenient to clean can be solved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology, specifically to a sewage tank, cleaning equipment, and a cleaning base station. Background Technology

[0002] With the rapid development of technology and the continuous improvement of people's living standards, more and more families are starting to use smart home appliances. Cleaning equipment (such as robotic vacuum cleaners and floor scrubbers) are becoming increasingly widely used because they can replace manual labor in sweeping, vacuuming, and mopping, reducing the workload of cleaning floors and alleviating physical fatigue.

[0003] Wastewater tanks are an essential component of cleaning equipment. During the cleaning process, wet cleaning components (such as disc wipes, roller wipes, and conveyor belt wipes) need to be self-cleaned in real time. The wastewater generated during self-cleaning needs to be collected in the wastewater tank to prevent contamination of the surfaces to be cleaned. Currently, most wastewater tanks in cleaning equipment on the market require frequent manual cleaning by users. The cleaning process is extremely inconvenient, and users often need to use special tools (such as brushes) to complete a thorough cleaning. This not only makes the cleaning process cumbersome but also consumes a lot of time, resulting in a poor user experience. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a sewage tank, cleaning equipment and cleaning base station to improve the technical problem of inconvenient cleaning of existing sewage tanks.

[0005] To achieve the above and other related objectives, the first aspect of this utility model provides a sewage tank, which includes: a sewage chamber, a tank cover, a water inlet channel, and a self-cleaning mechanism; the top of the sewage chamber has an opening; the tank cover is detachably closed to the opening; the water inlet channel is disposed on the tank cover and has a water outlet and a water inlet that can be connected to a clean water supply pipe; the self-cleaning mechanism is disposed on the tank cover and located inside the sewage chamber, and the self-cleaning mechanism includes a water supply port and a water spray port, the water supply port being connected to the water outlet; wherein, the reverse thrust generated by the clean water spraying out from the water spray port drives the self-cleaning mechanism to rotate.

[0006] The beneficial effects of this design are as follows: In this embodiment, by incorporating a self-cleaning mechanism within the sewage chamber, the rotational motion of the mechanism causes clean water to spray from the nozzles, rinsing the chamber walls from multiple angles, thus achieving comprehensive coverage of all areas of the chamber walls. This design effectively cleans residual dirt from the chamber walls, achieving automatic cleaning. Since the entire cleaning process is automated, the tedious manual cleaning operations of traditional methods are avoided, improving the convenience of cleaning the sewage tank. Simultaneously, this multi-angle spraying method enhances the cleaning effect of the sewage chamber, ensuring thorough cleaning of its walls. Furthermore, because the self-cleaning mechanism utilizes the reverse thrust of the water spray to drive rotation, there is no need for an additional drive motor or transmission device. This reduces energy consumption and the number of parts, avoids the risk of malfunction due to contact between electric components and sewage, and improves the durability of the self-cleaning mechanism.

[0007] In one embodiment of the present invention, the self-cleaning mechanism includes a rotating arm, which is rotatably mounted on the cover, and a water spray nozzle is disposed on the rotating arm; a water flow channel is formed inside the rotating arm, and the water flow channel connects the water supply port and the water spray nozzle.

[0008] The beneficial effects of this design are as follows: By setting a water flow channel inside the rotating arm, the water flow channel and the spray nozzle can be integrated. This not only ensures the smoothness and stability of the water supply from the spray nozzle, but also improves the compactness of the rotating arm structure design, reduces the internal space occupied by the sewage chamber, and ensures the sewage capacity of the sewage chamber.

[0009] In one embodiment of this utility model, the rotating arm includes a rotating shaft and a rod body. One end of the rotating shaft is rotatably connected to the box cover, and the other end is connected to the rod body. The water spray nozzle is disposed on the rod body.

[0010] The advantages of this design are as follows: By connecting one end of the rotating shaft to the tank cover and the other end to the rod, the overall structure of the rotating arm becomes more compact, better adapting to the limited space inside the tank cover and avoiding excessive installation space occupation. Simultaneously, since the spray nozzles are located on the rod, the spray path generated during the rod's rotation can be adjusted by changing the nozzles' positions, thus better covering all areas of the sewage chamber walls and improving cleaning effectiveness. Furthermore, by adjusting the number and size of the spray nozzles, the flow rate and pressure of the water can be changed, thereby regulating the rod's rotation speed and the spray pressure. This design allows the self-cleaning mechanism to better adapt to the cleaning needs of sewage chambers of different shapes and sizes, enhancing its adaptability and flexibility.

[0011] In one embodiment of the present invention, the water flow channel includes a first channel and a second channel that are interconnected. The first channel extends along the axial direction of the rotating shaft, and the upper part of the first channel passes through the rotating shaft. The lower part of the first channel is connected to one end of the second channel. The other end of the second channel extends along the length of the rod, and the spray nozzle is disposed on the side wall of the second channel.

[0012] The advantages of this design are as follows: By extending the first channel along the axial direction of the rotating shaft and the second channel along the length of the rod, it not only facilitates the conformal design of the first and second channels but also reduces the number of bends in the water flow channels, thereby reducing the pressure drop generated when clean water flows within the channels. Simultaneously, since the spray nozzles are located on the side wall of the second channel, they can be positioned closer to the wall of the wastewater chamber, shortening the spray distance and enhancing the water flow impact force, resulting in better cleaning of the wastewater chamber walls.

[0013] In one embodiment of this utility model, the box cover includes a receiving cavity, a rotating shaft is rotatably installed in the receiving cavity, and a rod extends to the outside of the receiving cavity; the water outlet is provided on the top wall of the receiving cavity, and the water supply port is provided on the rotating shaft and is vertically connected to the water outlet.

[0014] The advantages of this design are as follows: By installing the rotating shaft inside the receiving cavity and extending the rod to the outside of the cavity, the layout of the entire self-cleaning mechanism in the height direction of the sewage tank is more compact. This design makes full use of the internal space of the sewage tank and avoids unnecessary space waste. Simultaneously, since the rotating shaft is installed inside the receiving cavity, the cavity provides more stable support for the shaft, thus reducing swaying and vibration during the rotation of the rotating arm and improving the stability of the self-cleaning mechanism's rotational operation. Furthermore, by placing the outlet on the top wall of the receiving cavity and the supply port on the rotating shaft, with the two connected vertically, water flow between the outlet and supply port can be directly achieved during the rotation of the shaft, eliminating the need for additional complex rotating joints. This simplifies the structural design and reduces manufacturing costs for processing and assembly.

[0015] In one embodiment of this utility model, the rotating shaft and the rod are connected by a snap-fit ​​structure. The snap-fit ​​structure includes a snap-fit ​​block and a snap-fit ​​groove. The snap-fit ​​block and the snap-fit ​​groove are respectively disposed on the rotating shaft and the rod.

[0016] The advantages of this design are as follows: By using a snap-fit ​​structure to connect the shaft and the rod, quick separation of the shaft and rod is possible, forming a modular design. When the spray nozzle is clogged, the rod can be directly disassembled for cleaning, avoiding the cumbersome process of disassembling the entire shaft as in traditional designs, significantly reducing maintenance complexity. Furthermore, the snap-fit ​​structure using blocks and slots not only facilitates the assembly and disassembly of the shaft and rod, improving the stability and reliability of the connection, but also, due to the simple structure of the blocks and slots, is easy to manufacture, thus reducing processing costs.

[0017] In one embodiment of this utility model, the rotating shaft is rotatably mounted on the cover via a bearing. The cover is provided with a receiving cavity, which includes a blind hole section and a platform section. The platform section is positioned relative to the blind hole section and close to the opening of the receiving cavity. The rotating shaft includes a flange portion and a cylindrical portion. The cylindrical portion connects the flange portion and the rod. The bearing is fitted with the cylindrical portion. The flange portion is installed in the blind hole section. The bearing is installed in the platform section and provides support to the end of the flange portion facing the platform section.

[0018] The beneficial effects of this design are as follows: This design allows the bearing to provide effective axial support to the flange, preventing axial movement of the shaft and ensuring its positional accuracy and stability. Simultaneously, because the flange of the shaft is installed within the blind hole section, and the cylindrical part mates with the bearing within the platform section, this segmented structural design allows for a tight fit between the components. This fully utilizes the installation height space, reduces the installation volume of the self-cleaning mechanism, and contributes to a more compact overall structure.

[0019] In one embodiment of this utility model, a sealing cover is provided at the opening of the receiving cavity. The sealing cover supports the end of the bearing away from the blind hole section and seals the installation gap between the bearing and the stage section.

[0020] The beneficial effects of this design are as follows: Because the opening of the receiving cavity is equipped with a sealing cap, the cap seals the installation gap between the bearing and the receiving cavity, thereby reducing the risk of clean water leakage from the bearing installation gap at the water supply outlet and ensuring a stable water spray volume. Simultaneously, the sealing cap also prevents sewage and dust from entering the space between the bearing and the receiving cavity, thus reducing bearing wear and ensuring normal bearing operation. Furthermore, since the sealing cap supports the end of the bearing away from the blind hole section, this not only improves the axial positioning accuracy of the bearing and reduces the risk of bearing detachment, but also allows the axial force of the bearing to be transmitted to the main structure of the receiving cavity through the sealing cap, further enhancing the axial stability of the bearing and reducing axial deformation and wear.

[0021] In one embodiment of this utility model, the water nozzle is disposed at at least one end of the rod along its length, and the water spraying direction of the water nozzle is set at an angle to the length direction of the rod.

[0022] The beneficial effects of this design are as follows: the spray nozzle is located at at least one end along the length of the rod, and the spray direction of the nozzle is at an angle to the length of the rod. This design not only utilizes the reaction force of the spray to achieve self-driven rotation of the rod, but also creates a composite water flow with axial and radial components, thus overcoming the limitations of traditional direct spraying methods. This extends the water flow coverage from the axial direction of the rod to the circumferential area, thereby achieving comprehensive cleaning of the walls of the wastewater chamber.

[0023] In one embodiment of this utility model, two water spray nozzles are provided, which are respectively located at both ends of the rod in the length direction, and the water spraying directions of the two water spray nozzles are opposite.

[0024] The beneficial effects of this design are: the reaction forces generated by the two opposing water nozzles on the rod body are balanced, allowing the rod body to obtain a more stable and uniform rotational torque, avoiding vibration or deflection caused by unilateral force. At the same time, the reverse water spray design at both ends allows the water flow to act on both sides of the rod body simultaneously, enabling synchronous cleaning of both sides of the sewage chamber, thereby improving cleaning efficiency.

[0025] In one embodiment of this utility model, the lid is provided with at least two self-cleaning mechanisms, and the water inlet channel is provided with at least two water outlets, with one self-cleaning mechanism corresponding to one water outlet.

[0026] The advantages of this setup are as follows: By incorporating at least two self-cleaning mechanisms, each corresponding to a water outlet, a more comprehensive cleaning of the wastewater chamber can be achieved. Compared to a single self-cleaning mechanism, the setup with at least two mechanisms can simultaneously clean different areas of the wastewater chamber walls, thereby improving cleaning efficiency and reducing cleaning time.

[0027] In one embodiment of the present invention, the lid includes a cover body and a cover plate. The cover body is provided with a groove, and the cover plate covers the groove so that the groove and the cover plate together define at least a portion of the water inlet channel.

[0028] The advantages of this design are as follows: The structure, where the groove and cover plate work together to form the water inlet channel, is simpler to manufacture compared to a one-piece, closed tubular channel molded onto the cover. Furthermore, the groove can be formed onto the cover using various processes such as injection molding and stamping, eliminating the need for complex internal molds or additional pipe assembly, thus reducing the production cost of the water inlet pipe and improving production efficiency. Simultaneously, when the water inlet channel becomes clogged, the debris in the groove can be directly cleaned by simply opening the cover plate, without disassembling the entire cover or using special tools for unblocking. This open structure facilitates inspection and maintenance, enabling quick restoration of the water inlet channel's flow and improving its maintainability and long-term reliability.

[0029] In one embodiment of this utility model, a clean water inlet is provided on the side wall of the sewage chamber, and the clean water inlet is connected to the water inlet. A sewage outlet is provided on the bottom wall of the sewage chamber.

[0030] The beneficial effects of this design are as follows: By setting a clean water inlet on the side wall of the sewage chamber and a drain outlet on the bottom wall, it is possible to conveniently place the clean water inlet close to the opening of the sewage chamber, thus keeping it away from the bottom wall and preventing sewage from entering and contaminating the clean water, ensuring its cleanliness. Furthermore, since sewage and impurities generated after cleaning the chamber walls will settle at the bottom under gravity, the drain outlet effectively removes sewage and sediment, reducing long-term accumulation and improving the cleaning efficiency of the sewage tank.

[0031] In one embodiment of this utility model, the cover is rotatably connected to the sewage chamber and can be switched between a first position with the opening closed and a second position with the opening open; a water inlet pipe is also provided inside the sewage chamber, and the water inlet pipe is connected to the clean water inlet and the water outlet.

[0032] The advantages of this design are as follows: The tank cover is mounted on the wastewater chamber via a rotating connection. This design allows operators to quickly open the cover for equipment maintenance, cleaning, or inspection without the need for complex disassembly and reinstallation. For example, when it is necessary to clean sediment from the wastewater chamber or inspect internal equipment, simply rotate the cover to the second position, greatly improving operational efficiency. An inlet pipe is installed inside the wastewater chamber, making the connection between the clean water inlet and the main inlet more convenient and quick. During installation, simply connect both ends of the inlet pipe to the clean water inlet and the main inlet respectively; the operation is simple and easy to implement.

[0033] In one embodiment of this utility model, the sewage outlet is provided with a valve assembly, which opens the sewage outlet in response to the docking of the sewage tank and the cleaning base station.

[0034] The advantages of this design are as follows: Because the valve assembly automatically responds to the docking of the wastewater tank and the cleaning station, the discharge port opens automatically, eliminating the need for manual operation. This not only effectively improves the efficiency of discharge port opening but also reduces errors caused by improper human operation, such as forgetting to open or close the discharge port. Therefore, it avoids problems such as wastewater leakage or equipment damage caused by operational errors.

[0035] In one embodiment of this utility model, the valve assembly includes a baffle and a push rod. The baffle is rotatably connected to the wall of the sewage chamber, and the push rod is slidably disposed in the sewage chamber. In response to the docking of the sewage tank and the cleaning base station, the push rod slides under the drive of the push rod mechanism on the cleaning base station to push the baffle to rotate and open the sewage outlet.

[0036] The advantages of this design are that the push rod mechanism on the cleaning base station automatically slides the push rod, which in turn rotates the baffle to open the sewage outlet, eliminating the need for manual operation throughout the entire process. This automated design improves the ease of opening the sewage outlet and reduces manual intervention, especially in situations where the sewage outlet needs to be opened frequently, effectively improving work efficiency.

[0037] In one embodiment of the present invention, the valve assembly further includes an elastic reset member, which, in response to the separation of the sewage tank and the cleaning station, drives the baffle to rotate in the opposite direction to close the sewage outlet.

[0038] The beneficial effects of this design are as follows: the elastic reset element enables automatic closure of the sewage outlet. When the sewage tank is separated from the cleaning station, the elastic reset element drives the baffle to rotate in the opposite direction to close the sewage outlet, without requiring manual intervention. Therefore, this design improves the efficiency of sewage outlet closure and enhances the convenience of the closure operation.

[0039] In a second aspect, this utility model provides a cleaning device that includes the wastewater tank in any of the above embodiments.

[0040] In one embodiment of this utility model, the cleaning equipment includes a clean water supply pipe, which connects the water inlet and the overflow outlet of the clean water tank, and the clean water tank is installed in the cleaning equipment or cleaning base station.

[0041] The beneficial effects of this design are as follows: By connecting the inlet and the overflow outlet of the clean water tank, when the water level in the clean water tank exceeds the set height, the excess clean water will automatically flow out through the overflow outlet and be automatically transported to the inlet via the clean water supply pipeline, thus achieving a clean water supply for the self-cleaning mechanism inside the sewage chamber. Therefore, there is no need to configure a separate water pump for the self-cleaning mechanism; the entire water supply process of the self-cleaning mechanism can share a single water pump with the water filling process of the clean water tank. This design simplifies the equipment structure and reduces manufacturing costs. Furthermore, this design utilizes the natural overflow principle of the clean water tank for water supply, requiring no additional energy consumption and thus achieving energy-saving and environmentally friendly effects.

[0042] In a third aspect, this utility model provides a clean base station, which includes the sewage tank in any of the above embodiments.

[0043] In one embodiment of this utility model, the clean base station includes a clean water supply pipe, which connects the water inlet and the overflow outlet of the clean water tank, and the clean water tank is installed in the clean base station or cleaning equipment.

[0044] The beneficial effects of this design are as follows: By connecting the inlet and the overflow outlet of the clean water tank, when the water level in the clean water tank exceeds the set height, the excess clean water will automatically flow out through the overflow outlet and be automatically transported to the inlet via the clean water supply pipeline, thus achieving a clean water supply for the self-cleaning mechanism inside the sewage chamber. Therefore, there is no need to configure a separate water pump for the self-cleaning mechanism; the entire water supply process of the self-cleaning mechanism can share a single water pump with the water filling process of the clean water tank. This design simplifies the equipment structure and reduces manufacturing costs. Furthermore, this design utilizes the natural overflow principle of the clean water tank for water supply, requiring no additional energy consumption and thus achieving energy-saving and environmentally friendly effects. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a three-dimensional structural diagram of the sewage tank of this utility model in one embodiment;

[0047] Figure 2 for Figure 1 Top view of the wastewater tank in the embodiment;

[0048] Figure 3 for Figure 2 A sectional view along direction AA;

[0049] Figure 4This is a schematic diagram of the sewage tank of this utility model after the tank cover has been removed in one embodiment;

[0050] Figure 5 This is a schematic diagram of the structure of the tank cover in one embodiment of the sewage tank of this utility model;

[0051] Figure 6 This is a three-dimensional structural diagram of the sewage tank of this utility model from another angle in one embodiment;

[0052] Figure 7 for Figure 6 A sectional view along the CC direction;

[0053] Figure 8 for Figure 7 A magnified view of a portion of region D in the middle;

[0054] Figure 9 This is a partial structural cross-sectional view of the sewage tank of this utility model in one embodiment;

[0055] Figure 10 for Figure 9 A magnified view of a portion of region E in the middle;

[0056] Figure 11 This is a three-dimensional structural diagram of the sewage tank of this utility model in one embodiment, showing that the self-cleaning mechanism is not installed on the tank cover.

[0057] Figure 12 for Figure 11 The embodiment shows a projection view of the box cover from another angle;

[0058] Figure 13 for Figure 12 A sectional view along the FF direction;

[0059] Figure 14 This is a projected view of a wastewater tank of the present invention, in one embodiment, on which a self-cleaning mechanism is installed on the tank cover;

[0060] Figure 15 for Figure 14 A magnified view of a portion of region G in the middle;

[0061] Figure 16 This is a schematic diagram of the structure of the sewage tank of this utility model after the cover plate is removed in one embodiment;

[0062] Figure 17 for Figure 16 A partial sectional view along the HH direction;

[0063] Figure 18 This is a schematic projection of the tank cover of the sewage tank of this utility model from another angle in one embodiment;

[0064] Figure 19 for Figure 18 A partial sectional view along direction II;

[0065] Figure 20 This is a schematic diagram of the sewage tank of the present invention, showing a sewage outlet at the bottom of the sewage tank in one embodiment;

[0066] Figure 21 This is a schematic diagram of the structure of the sewage tank of this utility model, in which an inlet pipe is provided inside the sewage chamber;

[0067] Figure 22 This is a schematic diagram of the valve assembly closing the drain outlet in one embodiment of the sewage tank of this utility model;

[0068] Figure 23 This is a schematic diagram of the valve assembly opening the drain port in one embodiment of the sewage tank of this utility model;

[0069] Figure 24 This is a schematic diagram of the structure of the sewage tank and the cleaning base station in one embodiment of the present invention;

[0070] Figure 25 This is a schematic diagram of the installation positions of the sewage tank and the clean water tank at an angle in one embodiment of the present invention;

[0071] Figure 26 This is a schematic diagram of the installation positions of the sewage tank and the clean water tank from another angle in one embodiment of the present invention;

[0072] Figure 27 This is an exploded schematic diagram of the sewage tank and the clean water tank in one embodiment of the present invention;

[0073] Figure 28 This is a schematic diagram showing the installation positions of the sewage tank and the clean water tank at another angle in one embodiment of this utility model.

[0074] Component designation explanation:

[0075] 100. Sewage tank; 110. Sewage chamber; 111. Opening; 112. Clean water inlet; 113. Sewage outlet; 114. Water inlet pipe; 115. Slide groove; 116. Clearance cavity; 117. Tank body; 1171. Support shaft; 120. Tank cover; 1201. Mounting hole; 121. Cover body; 1211. Groove; 12111. Positioning platform; 122. Cover plate; 123. Receiving cavity; 1231. Blind hole section; 1232. Platform stage; 1233. Annular protrusion; 124. Protrusion; 130. Water inlet channel; 131. Water inlet; 132. Water outlet; 133. Groove section; 134. Through hole section; 140. Self-cleaning mechanism; 141. Water supply port; 142. Spray nozzle; 143. 1431 Rotating arm; 1431 Water flow channel; 14311 First channel; 14312 Second channel; 1432 Rotating shaft; 14321 Flange; 14322 Column; 1433 Rod; 14331 Mounting part; 14332 Extension section; 144 Bearing; 150 Snap-fit ​​structure; 151 Snap-fit ​​block; 152 Snap-fit ​​groove; 160 Sealing cover; 161 Annular groove; 170 Valve assembly; 171 Baffle; 1711 Plate; 1712 Connecting part; 172 Top rod; 1721 Sliding part; 1722 Pushing part; 173 Elastic reset part; 174 Rotating shaft; 310 Top rod mechanism; 400 Clean water tank; 410 Overflow port. Detailed Implementation

[0076] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0077] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0078] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0079] Please see Figures 1 to 28 This utility model provides a sewage tank 100, a cleaning device, and a cleaning base station. The sewage tank 100 has a self-cleaning mechanism 140 installed in the sewage chamber 110. The self-cleaning mechanism 140 can automatically rotate by the reverse thrust generated when clean water is sprayed out, so as to spray clean water onto the chamber wall of the sewage chamber 110 and wash away the dirt attached to the chamber wall of the sewage chamber 110, thereby realizing the automatic cleaning of the sewage chamber 110 and improving the convenience of cleaning the sewage tank 100.

[0080] This utility model provides a cleaning device, which can be a floor scrubber, sweeper, cleaning robot, etc., but is not limited to these. Taking a cleaning robot as an example, to perform its cleaning function, the cleaning device includes at least a body and cleaning components. The cleaning components are installed on the body and are used to clean the surface to be cleaned. The cleaning components can be a disc cloth, a roller cloth, a conveyor belt cloth, etc. To improve the cleaning effect of the cleaning device, the cleaning components usually have a wet cleaning function.

[0081] Specifically, the cleaning equipment includes a clean water tank 400 and a wastewater tank 100. The clean water tank 400 is used to replenish clean water to the cleaning components, ensuring they remain moist during cleaning operations for wet cleaning of the surface. The wastewater tank 100 is used to store wastewater generated during mopping and is pumped into it.

[0082] Since the wastewater tank 100 is used to store wastewater, which contains a large amount of dust, stains, and impurities, these contaminants adhere to the walls of the wastewater chamber 110 after the tank is emptied and are difficult to remove on their own. If the chamber walls are not cleaned regularly, these contaminants will gradually accumulate, breed bacteria, and produce odors, affecting the hygienic performance and lifespan of the cleaning equipment. Therefore, the walls of the wastewater chamber 110 need to be cleaned frequently.

[0083] Please see Figures 1 to 3In one embodiment of this utility model, the sewage tank 100 includes a sewage chamber 110, a tank cover 120, a water inlet channel 130, and a self-cleaning mechanism 140. The sewage tank 100 also includes a tank body 117, the inner cavity of which forms the sewage chamber 110. The sewage chamber 110 can be an integral chamber structure or composed of multiple independent chambers, as long as it meets the requirements for sewage collection during the cleaning process. The shape of the sewage chamber 110 can be any geometric shape, such as cylindrical, cuboid, or semi-cylindrical. The top of the sewage chamber 110 has an opening 111, the specific form of which includes, but is not limited to, a partial opening structure (such as a round hole or square hole formed on the top), a fully open structure (i.e., the entire top is an opening), etc. Optionally, this embodiment adopts a fully open top opening design. This design allows for a larger opening area 111 on the sewage chamber 110, facilitating the installation and maintenance of the internal components of the sewage tank 100.

[0084] Please see Figure 1 , Figure 4 and Figure 5 The lid 120 is detachably fitted onto the opening 111, meaning the lid 120 and the box body 117 are detachably connected. There are several ways to achieve this detachable connection. In one embodiment, a slot can be provided on the periphery of the box body 117 near the opening 111, and a corresponding elastic buckle protrusion can be provided on the lid 120. The cooperation between the slot and the elastic buckle protrusion allows the lid 120 to detachably fit onto the opening 111. In another embodiment, the lid 120 and the box body 117 can also be connected by fasteners (such as bolts, screws, etc.), allowing the lid 120 to detachably fit onto the opening 111.

[0085] Please see Figure 4 and Figure 5 The water inlet channel 130 is located on the tank cover 120. The water inlet channel 130 has an outlet 132 and an inlet 131, which can be connected to a clean water supply pipe. The water inlet channel 130 can be a separate pipe structure, fixedly connected to the tank cover 120 by mounting components (such as pipe clamps). Alternatively, the water inlet channel 130 can be directly injection molded or cast integrally with the tank cover 120, forming an integral structure. Because the water inlet channel 130 is located on the tank cover 120, it can be disassembled and assembled by removing and assembling the tank cover 120.

[0086] Please see Figure 3 , Figure 5 , Figure 8 and Figure 10A self-cleaning mechanism 140 is mounted on the tank cover 120 and located inside the sewage chamber 110. The self-cleaning mechanism 140 includes a water inlet 141 and a spray nozzle 142. The spray nozzle 142 is connected to the water inlet 141, and the water inlet 141 is connected to the water outlet 132. Clean water flowing from the clean water supply pipe enters the water inlet channel 130 through the water inlet 131, then flows into the water inlet 141 through the water outlet 132, and finally sprays out through the spray nozzle 142. The reverse thrust generated when the clean water is sprayed out of the spray nozzle 142 drives the self-cleaning mechanism 140 to rotate relative to the sewage chamber 110, thereby spraying clean water onto the chamber wall of the sewage chamber 110.

[0087] The specific structure of the self-cleaning mechanism 140 is not limited. In one embodiment, the self-cleaning mechanism 140 may be a rod structure with one end rotatably connected to the cover 120 and the other end being a horizontally arranged rod structure, with water spray holes located at the ends of the rod structure. When the water spray holes spray water, they generate a reverse thrust on the ends of the rod structure, thereby driving the rod structure to rotate and achieving rotational spraying of the wall of the sewage chamber 110. In other embodiments, the self-cleaning mechanism 140 may also be a hollow cylindrical cavity structure with one end rotatably connected to the cover 120 and the other end being a hollow cylindrical cavity structure, with multiple water spray holes arranged on the circumferential cavity wall. When the water spray holes spray water, they generate a reverse rotational thrust on the circumferential cavity wall of the hollow cylindrical cavity, thereby driving the hollow cylindrical cavity structure to rotate and achieving rotational spraying of the wall of the sewage chamber 110.

[0088] In this embodiment, a self-cleaning mechanism 140 is installed inside the sewage chamber 110. The rotational movement of the self-cleaning mechanism 140 within the sewage chamber 110 causes clean water to be sprayed from the nozzle 142, rinsing the walls of the sewage chamber 110 from multiple angles, thus achieving comprehensive coverage of all areas of the chamber walls. This design effectively cleans residual dirt on the walls of the sewage chamber 110, achieving automatic cleaning. Since the entire cleaning process is automated, the tedious operation of traditional manual cleaning is avoided, thereby improving the convenience of cleaning the sewage tank 100. Simultaneously, this multi-angle spraying method also enhances the cleaning effect of the sewage chamber 110, ensuring that the walls of the sewage chamber 110 are thoroughly cleaned. Furthermore, since the self-cleaning mechanism 140 is driven by the reverse thrust of the water spray, there is no need for an additional drive motor or transmission device. This reduces energy consumption and the number of parts, avoids the risk of malfunction due to contact between electric components and sewage, and improves the durability of the self-cleaning mechanism 140.

[0089] Qing Reference Figures 7 to 10In one embodiment of this utility model, the self-cleaning mechanism 140 includes a rotating arm 143, which is rotatably mounted on the tank cover 120, and a spray nozzle 142 is disposed on the rotating arm 143. The manner in which the rotating arm 143 is rotatably mounted on the tank cover 120 is not limited; for example, the rotating arm 143 can be rotatably mounted on the tank cover 120 via a bearing, or it can be rotatably mounted on the tank cover 120 via a self-lubricating bushing, etc. The rotating arm 143 can be vertically mounted on the tank cover 120, that is, the axis of rotation of the rotating arm 143 is perpendicular to the height direction of the sewage tank 100 (e.g., ...). Figure 7 (As shown in the Z-axis direction) Parallel. The rotating arm 143 can also be installed obliquely on the tank cover 120, that is, the rotation axis of the rotating arm 143 is obliquely arranged with respect to the height direction of the sewage tank 100. Optionally, in one embodiment, please refer to Figure 7 The rotating arm 143 is vertically mounted on the tank cover 120, which facilitates the positioning and installation between the rotating arm 143 and the tank cover 120, reducing the difficulty of processing and assembly. Multiple spray nozzles 142 can be distributed along the length or height of the rotating arm 143, or only one can be provided, depending on meeting the cleaning requirements of the sewage chamber 110.

[0090] Please see Figure 8 and Figure 10 The rotating arm 143 has a water flow channel 1431 inside, which connects the water supply port 141 and the spray nozzle 142. The water flow channel 1431 can be a constant cross-section channel or a variable cross-section channel. The water flow channel 1431 can be any shape, such as a straight channel, a bent channel (e.g., L-shaped, U-shaped), or an arc-shaped channel (e.g., S-shaped). The actual design needs to be determined based on the location of the self-cleaning mechanism 140. By setting the water flow channel 1431 inside the rotating arm 143, the water flow channel 1431 and the spray nozzle 142 can be integrated. This not only ensures the smoothness and stability of the water supply from the spray nozzle 142, but also improves the compactness of the rotating arm 143's structural design, saves internal installation space in the sewage chamber 110, and ensures the sewage capacity of the sewage chamber 110.

[0091] Please see Figures 8 to 10 In one embodiment of this utility model, the rotating arm 143 includes a rotating shaft 1432 and a rod 1433. One end of the rotating shaft 1432 is rotatably connected to the cover 120, and the other end of the rotating shaft 1432 is connected to the rod 1433. A water spray nozzle 142 is disposed on the rod 1433. The rotating shaft 1432 can be rotatably connected to the cover 120 by any means such as bearings, self-lubricating bushings, or shaft-hole fitting; this embodiment is not limited to this.

[0092] Please see Figures 8 to 10Inside the sewage chamber 110, along the height of the sewage tank 100, the rotating shaft 1432 is located on the side near the tank cover 120, and the rod 1433 is located on the side away from the tank cover 120. For details, please refer to... Figure 5 and Figure 10 The rod 1433 includes a mounting portion 14331 and two extension sections 14332, which are symmetrically arranged on both sides of the mounting portion 14331. The mounting portion 14331 has an approximately cylindrical structure and is connected to the rotating shaft 1432. The extension sections 14332 can be any shape, such as round rods, rectangular rods, or polygonal rods. In this embodiment, the extension sections 14332 are round rods. The round rod has a symmetrical shape and a uniform center of gravity distribution, which can maintain good dynamic balance during rotation and reduce vibration and swaying generated during the rotation of the rod 1433.

[0093] In the above embodiment, by connecting one end of the rotating shaft 1432 to the cover 120 and the other end to the rod 1433, the overall structure of the rotating arm 143 becomes more compact, better adapting to the limited space inside the cover 120 and avoiding excessive installation space occupation. Simultaneously, since the spray nozzles 142 are located on the rod 1433, adjusting their position allows for adjustment of the water spray path generated during the rotation of the rod 1433, thereby better covering all areas of the sewage chamber 110 wall and improving cleaning efficiency. Furthermore, by adjusting the number of spray nozzles 142, the flow rate and pressure of the water spray can be changed, thereby adjusting the rotation speed and cleaning efficiency of the rod 1433. This design allows the self-cleaning mechanism 140 to better adapt to the cleaning needs of sewage chambers 110 of different shapes and sizes, enhancing its adaptability and flexibility.

[0094] Please see Figure 8 and Figure 9 In one embodiment of this utility model, the water flow channel 1431 includes a first channel 14311 and a second channel 14312 that are interconnected. The first channel 14311 extends along the axial direction of the rotating shaft 1432. The upper part of the first channel 14311 passes through the rotating shaft 1432 and is connected to the water supply port 141. The lower part of the first channel 14311 is connected to one end of the second channel 14312. It should be noted that the upper and lower parts of the first channel 14311 refer to the end closer to the water outlet 132 along the height direction of the sewage chamber 110, which is the upper part, and the end farther away from the water outlet 132 is the lower part. The other end of the second channel 14312 extends along the length direction of the rod 1433, and the spray nozzle 142 is disposed on the side wall of the second channel 14312.

[0095] By extending the first channel 14311 along the axial direction of the rotating shaft 1432 and the second channel 14312 along the length of the rod 1433, it not only facilitates the conformal design of the first channel 14311 and the second channel 14312, but also reduces the number of bends in the water flow channel 1431, thereby reducing the pressure drop generated when clean water flows in the water flow channel 1431. At the same time, since the spray nozzle 142 is set on the side wall of the second channel 14312, the spray nozzle 142 can be arranged closer to the cavity wall of the sewage chamber 110, shortening the spray distance, enhancing the water flow impact force, and making the cavity wall of the sewage chamber 110 cleaner.

[0096] Please see Figure 8 and Figure 11 In one embodiment of this utility model, the cover 120 includes a receiving cavity 123, a rotating shaft 1432 is rotatably mounted within the receiving cavity 123, and a rod 1433 extends to the outside of the receiving cavity 123. The receiving cavity 123 is a cylindrical shape adapted to the shape of the rotating shaft 1432, and the rotating shaft 1432 is coaxially arranged with the receiving cavity 123. Along the height direction of the sewage chamber 110, the opening of the receiving cavity 123 faces the bottom wall of the sewage chamber 110. The rotating shaft 1432 may be partially or completely located within the receiving cavity 123. Optionally, in this embodiment, along the height direction of the sewage chamber 110, the rotating shaft 1432 is completely located within the receiving cavity 123, that is, the depth of the receiving cavity 123 is greater than the axial length of the rotating shaft 1432. The mounting portion 14331 of the rod 1433 at least partially extends into the interior of the receiving cavity 123 to connect with the rotating shaft 1432. The extensions 14332 on both sides of the mounting section 14331 are located outside the receiving cavity 123.

[0097] Please see Figure 8 The outlet 132 is located on the top wall of the receiving cavity 123, and the supply port 141 is located at the end of the rotating shaft 1432 opposite to the rod body 1433, and is vertically connected to the outlet 132. It should be noted that the vertical direction here refers to the height of the sewage tank 100. Specifically, the outlet 132 is a cylindrical hole and is coaxially arranged with the receiving cavity 123. The supply port 141 is a conical hole and is coaxially arranged with the rotating shaft 1432. The end of the conical hole with the larger diameter connects to the outlet 132 so that the clean water flowing out of the outlet 132 can fall into the supply port 141.

[0098] In the above embodiment, by installing the rotating shaft 1432 inside the receiving cavity 123 and extending the rod 1433 outside the receiving cavity 123, the layout of the entire self-cleaning mechanism 140 in the height direction of the sewage chamber 110 is more compact. This design can make full use of the internal space of the sewage tank 100 and avoid unnecessary space waste. At the same time, since the rotating shaft 1432 is installed inside the receiving cavity 123, the receiving cavity 123 can provide more stable support for the rotating shaft 1432. Therefore, the swaying and vibration that occur during the rotation of the rotating arm 143 can be reduced, and the stability of the rotation operation of the self-cleaning mechanism 140 can be improved. In addition, by setting the outlet 132 on the top wall of the receiving cavity 123 and the supply port 141 on the rotating shaft 1432, and connecting the two vertically, the water flow between the outlet 132 and the supply port 141 can be directly realized during the rotation of the rotating shaft 1432, without the need for additional complex rotating joints. Therefore, the structural design can be simplified and the manufacturing costs of processing and assembly can be reduced.

[0099] Please see Figure 8 and Figure 10 In one embodiment of this utility model, the rotating shaft 1432 and the rod 1433 are connected by a snap-fit ​​structure 150. Specifically, the rotating shaft 1432 is snap-fitted to the mounting portion 14331 of the rod 1433. The snap-fit ​​structure 150 can be of various types. In one embodiment, the snap-fit ​​structure 150 can be an elastic claw and a slot, with one of the elastic claw and slot disposed on the rotating shaft 1432 and the other on the mounting portion 14331. The snap-fit ​​connection between the rotating shaft 1432 and the mounting portion 14331 is achieved through the engagement of the elastic claw and the slot, thus realizing the snap-fit ​​connection between the rotating shaft 1432 and the rod 1433. In another embodiment, the snap-fit ​​structure 150 can also be a conical hole and a cone, one of which is disposed on the rotating shaft 1432 and the other is disposed on the mounting part 14331. The snap-fit ​​connection between the rotating shaft 1432 and the mounting part 14331 is realized through the conical hole insertion between the conical hole and the cone, that is, the snap-fit ​​connection between the rotating shaft 1432 and the rod 1433 is realized.

[0100] In the above embodiment, by using a snap-fit ​​structure 150 to connect the rotating shaft 1432 and the rod 1433, the rotating shaft 1432 and the rod 1433 can be quickly separated, forming a modular design. When the nozzle 142 is clogged, the rod 1433 can be directly disassembled for cleaning, avoiding the cumbersome process of disassembling the entire rotating shaft 1432 in traditional designs, significantly reducing maintenance complexity. Furthermore, by connecting the rotating shaft 1432 and the rod 1433 using the snap-fit ​​structure 150, disassembly and assembly can be completed without special tools, making the process simple and efficient.

[0101] Please see Figure 8 and Figure 10In one embodiment of this utility model, the snap-fit ​​structure 150 includes a snap-fit ​​block 151 and a snap-fit ​​groove 152, with the snap-fit ​​block 151 and the snap-fit ​​groove 152 correspondingly snap-fitted together. The snap-fit ​​block 151 and the snap-fit ​​groove 152 are respectively disposed on the rotating shaft 1432 and the rod body 1433. Specifically, the snap-fit ​​block 151 and the snap-fit ​​groove 152 are respectively disposed on the mounting portion 14331 of the rotating shaft 1432 and the rod body 1433. In one embodiment, please refer to... Figure 8 A locking block 151 is disposed at one end of the rotating shaft 1432 facing the rod 1433, and a locking groove 152 is disposed at one end of the mounting portion 14331 facing the rotating shaft 1432. The locking block 151 can be a ring structure surrounding the rotating shaft 1432, or it can be a plurality of locking blocks 151 spaced apart on the outer periphery of the rotating shaft 1432. The shape of the locking groove 152 matches the shape of the locking block 151 to achieve a locking connection between the locking groove 152 and the locking block 151. Optionally, in this embodiment, the locking block 151 is an annular block structure surrounding the rotating shaft 1432, and the locking groove 152 is an annular groove structure surrounding the mounting portion 14331. In other embodiments, the locking groove 152 may be disposed at one end of the rotating shaft 1432 facing the rod 1433, and the locking block 151 may be disposed at one end of the mounting portion 14331 facing the rotating shaft 1432. By using a snap-fit ​​structure 150 with a snap-fit ​​block 151 and a snap-fit ​​groove 152 to connect the rotating shaft 1432 and the rod 1433, it is not only convenient to assemble and disassemble the rotating shaft 1432 and the rod 1433, improving the stability and reliability of the connection between the rod 1433 and the rotating shaft 1432, but also the structure of the snap-fit ​​block 151 and the snap-fit ​​groove 152 is relatively simple and easy to manufacture, thus helping to reduce processing costs.

[0102] Please see Figure 8 and Figure 10 In one embodiment of this utility model, the rotating shaft 1432 is rotatably mounted on the housing cover 120 via a bearing 144. The bearing 144 can be any bearing that meets the support requirements, such as an angular contact bearing or a deep groove ball bearing. The number of bearings 144 can be one or two. The bearing 144 can be fixedly connected to the housing cover 120 via a bearing housing, or it can be connected to the housing cover 120 via other structures such as a fixing sleeve mounted on the housing cover 120. In this embodiment, the rotating shaft 1432 is rotatably mounted on the housing cover 120 via the bearing 144. Since the bearing 144 is a standard component, its specifications and models have a wide range of options, allowing for flexible selection based on the load, speed, and accuracy requirements of the rotating shaft 1432. Furthermore, standard bearings 144 are readily available on the market and have low procurement costs, which helps reduce overall manufacturing costs.

[0103] Please see Figure 8 and Figure 13In one embodiment of this utility model, the receiving cavity 123 includes a blind hole section 1231 and a stepped section 1232 connected to each other. The blind hole section 1231 and the stepped section 1232 are coaxially arranged, and the stepped section 1232 is positioned near the opening of the receiving cavity 123 relative to the blind hole section 1231. The rotating shaft 1432 includes a flange portion 14321 and a cylindrical portion 14322 connected to each other. The cylindrical portion 14322 connects the flange portion 14321 and the rod body 1433. The bearing 144 is fitted and installed with the cylindrical portion 14322. The outer diameter of the cylindrical portion 14322 matches the inner diameter of the bearing 144, and the bearing 144 is sleeved on the cylindrical portion 14322 to form a fitted connection. The flange portion 14321 is installed in the blind hole section 1231, and the bearing 144 is installed in the stepped section 1232. The outer diameter of the flange portion 14321 is larger than the inner diameter of the bearing 144. At least one end of the flange portion 14321 facing the stage 1232 contacts the end face of the bearing 144 to achieve the axial support function of the bearing 144 on the flange portion 14321.

[0104] The design in the above embodiment enables the bearing 144 to provide effective axial support for the flange 14321. This axial support prevents the shaft 1432 from moving axially, thus ensuring the positional accuracy and stability of the shaft 1432. Simultaneously, since the flange 14321 of the shaft 1432 is installed within the blind hole section 1231, and the column part 14322 is fitted with the bearing 144 within the platform section 1232, this segmented structural design allows for tight fit between the components, fully utilizing the installation height space, reducing the overall size of the device, and promoting a more compact design.

[0105] Please see Figure 5 and Figure 8 In one embodiment of this utility model, a sealing cover 160 is provided at the opening of the receiving cavity 123. The sealing cover 160 provides support to the end of the bearing 144 away from the blind hole section 1231 and seals the installation gap between the bearing 144 and the stage section 1232. The shape of the sealing cover 160 is adapted to the shape of the opening of the receiving cavity 123. The sealing cover 160 covers the opening of the receiving cavity 123, and the sealing cover 160 is provided with a through hole for the mounting part 14331 of the rotating shaft 1432 or the rod 1433 to pass through. The sealing cover 160 can be fixed to the opening of the receiving cavity 123 by bolts or by snap-fit. Optionally, in this embodiment, please refer to Figure 8The receiving cavity 123 has an annular protrusion 1233 at its opening, and the sealing cover 160 has an annular groove 161 at one end facing the receiving cavity 123. The annular protrusion 1233 is correspondingly engaged with the annular groove 161, thereby achieving a snap-fit ​​and fixed connection between the sealing cover 160 and the receiving cavity 123. This design facilitates the disassembly and assembly of the sealing cover 160, and thus facilitates the maintenance and replacement of the bearing 144 and the rotating shaft 1432 installed inside the receiving cavity 123.

[0106] In the above embodiment, since a sealing cover 160 is provided at the opening of the receiving cavity 123, the sealing cover 160 can seal the installation gap between the bearing 144 and the receiving cavity 123, thereby reducing the risk of clean water at the water supply port 141 leaking from the installation gap of the bearing 144 and ensuring a stable water spray volume from the spray nozzle 142. Simultaneously, the sealing cover 160 can also prevent sewage and dust from the sewage chamber 110 from entering between the bearing 144 and the receiving cavity 123, thereby reducing the wear of the bearing 144 and ensuring its normal operation. Furthermore, since the sealing cover 160 provides support to the end of the bearing 144 away from the blind hole section 1231, this not only improves the axial positioning accuracy of the bearing 144 and reduces the risk of the bearing 144 falling off, but also allows the axial force of the bearing 144 to be transmitted to the main structure of the receiving cavity 123 through the sealing cover 160, further enhancing the axial stability of the bearing 144 and reducing axial deformation and wear.

[0107] Please see Figure 15In one embodiment of this utility model, water nozzles 142 are disposed at both ends of the rod 1433 along its length, and the spray direction of the water nozzles 142 forms an angle with the length direction of the rod 1433. The specific size of the angle is not limited, as long as the counterforce generated by the water nozzles 142 on the rod 1433 when spraying water is sufficient to drive the rod 1433 to rotate. Specifically, water nozzles 142 are disposed at both ends of the rod 1433 along its length, that is, water nozzles 142 are disposed on the extension sections 14332 on both sides of the mounting portion 14331. The number of water nozzles 142 on each side of the extension section 14332 can be equal or unequal. The angle between the spray direction of the water nozzles 142 on each side of the extension section 14332 and the length direction of the rod 1433 can be equal or unequal. In actual design, it needs to be determined according to the required rotation speed of the rod 1433. With this configuration, when water is sprayed from the nozzle 142, a counter-thrust force can be generated at both ends of the rod 1433 to drive the rod 1433 to rotate. In another embodiment, the nozzle 142 can also be provided only at one end of the rod 1433 along its length, and the spray direction of the nozzle 142 is set at an angle to the length direction of the rod 1433. Specifically, the nozzle 142 is only provided on one side of the extension section 14332. With this configuration, when water is sprayed from the nozzle 142, a counter-thrust force can be generated at one end of the rod 1433 to drive the rotation of the rod 1433.

[0108] In the above embodiment, the spray nozzle 142 is disposed at at least one end along the length of the rod 1433, and the spray direction of the spray nozzle 142 is set at an angle to the length of the rod 1433. This design not only utilizes the reaction force of the spray to achieve self-driven rotation of the rod 1433, but also forms a composite water flow with axial and radial components along the rod 1433, thereby overcoming the limitations of the traditional direct spray method and extending the water flow coverage from the axial direction of the rod 1433 to the circumferential area, thus achieving all-round cleaning of the wall of the sewage chamber 110.

[0109] Please see Figure 15In one embodiment of this utility model, two water nozzles 142 are provided, respectively located at both ends of the rod 1433 along its length, and the water spraying directions of the two water nozzles 142 are opposite. Specifically, the two water nozzles 142 are respectively located on the extension sections 14332 on both sides of the mounting portion 14331. The water spraying direction of the water nozzles 142 can be perpendicular to the length direction of the rod 1433, or it can be set at a non-perpendicular angle to the length direction of the rod 1433. Optionally, in this embodiment, the water spraying direction of the water nozzles 142 is perpendicular to the length direction of the rod 1433. It should be noted that, in this embodiment, the water spraying direction of the water nozzles 142 being perpendicular to the length direction of the rod 1433 means that, on the projection of the rod 1433 along the height direction of the sewage chamber 110, the water spraying direction of the water nozzles 142 is perpendicular to the length direction of the rod 1433.

[0110] In the above embodiment, two water nozzles 142 are respectively located at both ends of the length of the rod 1433, and the water spraying directions are opposite. This arrangement ensures that the reaction forces generated by the two opposing water nozzles 142 on the rod 1433 are balanced, allowing the rod 1433 to obtain a more stable and uniform rotational torque, avoiding vibration or deflection caused by unilateral force. Simultaneously, the reverse water spraying design at both ends allows the water flow to act on both sides of the rod 1433 simultaneously, enabling synchronous cleaning of both sides of the sewage chamber 110, thereby improving cleaning efficiency.

[0111] Please participate Figure 3 and Figure 5 In one embodiment of this utility model, two self-cleaning mechanisms 140 are provided on the lid 120, and two water outlets 132 are provided on the water inlet channel 130, with one self-cleaning mechanism 140 corresponding to one water outlet 132. The specific placement of the two self-cleaning mechanisms 140 on the lid 120 is not limited; for example, the two self-cleaning mechanisms 140 can be along the length of the lid 120 (e.g., along the length of the lid 120). Figure 2 The arrangement (as described in the X-axis) can also be along the width direction of the cover 120 (e.g., ...). Figure 2The self-cleaning mechanisms 140 can be arranged in various ways, such as along the Y-axis (as shown in the diagram) or along the diagonal of the cover 120, depending on the specific requirements for cleaning the walls of the sewage chamber 110. In other embodiments, two or more self-cleaning mechanisms 140 can be provided on the cover 120, for example, three or four. By providing two or more self-cleaning mechanisms 140 on the cover 120, with each self-cleaning mechanism 140 corresponding to a water outlet 132, a more comprehensive cleaning of the sewage chamber 110 can be achieved. Compared to the solution with one self-cleaning mechanism 140, the solution with two or more self-cleaning mechanisms 140 can simultaneously clean different areas of the walls of the sewage chamber 110, thereby improving cleaning efficiency and shortening cleaning time.

[0112] Please see Figure 3 and Figure 12 In one embodiment of this utility model, the water inlet channel 130 includes two water outlets 132, which are respectively disposed at both ends of the water inlet channel 130 extending in the direction of extension, and the water inlet 131 is located between the two water outlets 132. The water inlet 131 can be located in the center of the two water outlets 132, or it can be located near one of the water outlets 132. Optionally, in this embodiment, the water inlet 131 is approximately located in the center of the two water outlets 132. This not only ensures the reliable positioning and processing of the water inlet 131 on the water inlet channel 130, but also makes the water flow distribution to the two water outlets 132 more uniform, avoiding the problem of excessive or insufficient water flow on one side, thereby improving the stability and consistency of the water flow at the two spray nozzles 142.

[0113] Please see Figures 16 to 19In one embodiment of this utility model, the cover 120 includes a cover body 121 and a cover plate 122. The shape of the cover body 121 matches the shape of the opening 111 of the sewage chamber 110 to cover the opening 111 of the sewage chamber 110. The cover body 121 is provided with a groove 1211, and the cover plate 122 covers the groove 1211 so that the groove 1211 and the cover plate 122 together define at least a portion of the water inlet channel 130. The groove 1211 may be provided on the side of the cover body 121 facing the sewage chamber 110, or it may be provided on the side of the cover body 121 away from the sewage chamber 110. Optionally, in one embodiment, the groove 1211 is provided on the side of the cover body 121 away from the sewage chamber 110. This arrangement facilitates opening the cover plate 122 for cleaning when the groove 1211 is blocked. The cross-sectional shape of the groove 1211 may be rectangular, semi-circular, U-shaped, or other shapes. The length of the trench 1211 can be equal to the length of the inlet channel 130, meaning the entire inlet channel 130 is formed by the trench 1211 and the cover plate 122. Alternatively, the length of the trench 1211 can be less than the length of the inlet channel 130, meaning only a portion of the inlet channel 130 is formed by the trench 1211 and the cover plate 122. Optionally, please refer to... Figure 12 , Figure 13 and Figure 18 In this embodiment, the groove 1211 has a rectangular cross-section, and its length is less than that of the water inlet channel 130. Specifically, along the extension direction of the water inlet channel 130, a through-hole section 134 is provided at each end of the groove 1211 along its length. The through-hole section 134 is integrally formed inside the cover 121, and each through-hole section 134 corresponds to a water outlet 132. For ease of description, the portion of the water inlet channel 130 defined by the groove 1211 and the cover 122 is labeled as the groove section 133. In this embodiment, the water inlet channel 130 includes the groove section 133 and the through-hole sections 134 connected to both ends of the groove section 133. This arrangement not only facilitates the processing and forming of the water inlet channel 130, but also facilitates the formation of the water outlet 132 at the location of the receiving cavity 123, thereby improving the rationality of the structure and the ease of manufacturing of the water inlet channel 130.

[0114] In the above embodiment, the groove 1211 and the cover plate 122 cooperate to form the water inlet channel 130. Compared with the integrally formed closed tubular channel on the cover 121, the processing is simpler. Furthermore, the groove 1211 can be formed on the cover 121 through various processes such as injection molding and stamping, eliminating the need for complex internal molds or additional pipe assembly, thereby reducing the production cost of the water inlet pipe 114 and improving production efficiency. Simultaneously, when the water inlet channel 130 becomes blocked, the dirt in the groove 1211 can be directly cleaned by simply opening the cover plate 122, without disassembling the entire cover 120 or using special tools for unblocking. This open structure facilitates inspection and maintenance, quickly restoring the water inlet channel 130 to its original state, and improving the maintainability and long-term reliability of the water inlet channel 130.

[0115] Please see Figure 3 , Figure 11 , Figure 12 and Figure 17 In one embodiment of this utility model, the cover 120 further includes a protrusion 124, which is disposed on the cover body 121 and extends along the length direction of the water inlet channel 130. The protrusion 124 may be disposed on the side of the cover body 121 facing the interior of the sewage chamber 110, or it may be disposed on the side of the cover body 121 away from the interior of the sewage chamber 110. Optionally, in this embodiment, the protrusion 124 is disposed on the side of the cover body 121 facing the interior of the sewage chamber 110. The shape of the protrusion 124 corresponds to the shape of the water inlet channel 130. For example, when the water inlet channel 130 is straight, the protrusion 124 has a corresponding straight shape. When the water inlet channel 130 is bent (such as S-shaped), the protrusion 124 has a corresponding bent shape. A hollow cavity is formed between the protrusion 124 and the cover body 121, and the hollow cavity forms the water inlet channel 130. In one embodiment, along the thickness direction of the lid 120, a groove may be provided on the side of the protrusion 124 facing the lid body 121, and the lid body 121 may fit into the groove to form a hollow cavity. In another embodiment, a groove may also be provided on the side of the lid body 121 facing the protrusion 124, and the protrusion 124 may fit into the groove to form a hollow cavity. In this embodiment, the specific forming structure of the hollow cavity is not limited.

[0116] In the above embodiments, the protrusion 124 only increases the thickness in a localized area of ​​the cover 121, rather than thickening the entire cover 121. This localized thickening does not significantly increase the weight of the cover 121, thus facilitating a lightweight design. Simultaneously, the locally thickened protrusion 124 increases the cross-sectional area of ​​the water inlet channel 130, thereby increasing the water flow rate and meeting the larger water flow requirements of the self-cleaning mechanism 140. Furthermore, the protrusion 124 also acts as a reinforcing rib, enhancing the rigidity of the cover 121 and improving its resistance to deformation.

[0117] Please see Figure 11 , Figure 16 In one embodiment of this utility model, along the thickness direction of the cover 120, the protrusion 124 is located on the side of the groove 1211 away from the cover plate 122. Along the thickness direction of the cover body 121, the projection of the protrusion 124 covers the projection of the groove 1211. By placing the protrusion 124 on the side of the groove 1211 away from the cover plate 122, the protrusion 124 is located inside the sewage chamber 110, rather than on the outside of the cover 120. This arrangement reduces the height space occupied by the protrusion 124 on the outside of the cover 120, thus making the overall external dimensions of the cover 120 more compact and saving external space during installation and use. Simultaneously, since the projection of the protrusion 124 covers the projection of the groove 1211, this arrangement ensures that the width of the protrusion 124 (e.g., ...) is... Figure 17 As shown in the X2 direction, it can completely cover the width of the entire trench 1211 (e.g., Figure 17 (As shown in the X3 direction), so that the protrusion 124 can provide enough space for the groove 1211 to maintain a large depth, thereby helping to increase the cross-sectional area of ​​the water inlet channel 130.

[0118] Please see Figure 3 , Figure 11 , Figure 18 and Figure 19 In one embodiment of this utility model, the cover 121 is provided with a groove 1211, and the cover plate 122 covers the groove 1211. Along the thickness direction of the cover 121, a protrusion 124 is provided on the side of the cover 121 facing the inside of the sewage chamber 110, that is, the protrusion 124 is located inside the sewage chamber 110. The cover plate 122 is provided on the side of the cover 121 facing the outside of the sewage chamber 110, that is, the opening of the groove 1211 faces the outside of the sewage chamber 110, the cover plate 122 covers the groove 1211, and the cover plate 122 is located outside the sewage chamber 110. On the side of the cover 121 facing the outside of the sewage chamber 110, the surface of the cover plate 122 facing the outside of the sewage chamber 110 is flush with the surface of the cover 121 facing the outside of the sewage chamber. By placing the protrusion 124 on the side of the cover 121 facing the inside of the sewage chamber 110, the internal space of the sewage chamber 110 can be fully utilized, and the protrusion 124 can be avoided from being exposed and affecting the flatness of the external structure of the cover 120. At the same time, on the side of the cover 121 facing the outside of the sewage chamber 110, the surface of the cover plate 122 facing the outside of the sewage chamber 110 is flush with the surface of the cover 121 facing the outside of the sewage chamber 110, so that the outer surface of the cover plate 122 and the outer surface of the cover 121 can form a flush structure. This not only ensures the aesthetics of the exterior of the cover 120, but also avoids spatial interference problems that may be caused by external protrusions.

[0119] Please participate Figure 17 and Figure 19In one embodiment of this utility model, a positioning platform 12111 is provided at the opening edge of the groove 1211. The shape of the positioning platform 12111 is adapted to the contour shape of the cover plate 122, and the periphery of the cover plate 122 at least partially overlaps the positioning platform 12111. Specifically, along the width direction of the groove 1211, a stepped surface is provided on both sides of the opening edge of the groove 1211, and the stepped surfaces on both sides together form the positioning platform 12111. The two sides of the cover 121 overlap the stepped surfaces on the corresponding sides in the width direction, thereby realizing the overlapping fit between the cover plate 122 and the positioning platform 12111. By providing the positioning platform 12111, the positioning platform 12111 can play a positioning and guiding role when the cover plate 122 covers the groove 1211, thereby enabling the cover plate 122 to be installed quickly and accurately, improving the assembly efficiency of the cover plate 122. Meanwhile, the positioning function of the positioning platform 12111 can also provide stable support for the cover plate 122, reducing the probability of the cover plate 122 becoming loose or shifted due to external forces during use, thereby improving the stability of the groove 1211 covering effect.

[0120] Please see Figure 20 and Figure 21 In one embodiment of this utility model, a clean water inlet 112 is provided on the side wall of the sewage chamber 110 (i.e., the side wall of the housing 117), and the clean water inlet 112 communicates with the water inlet 131. The clean water inlet 112 can be provided on any side wall of the circumferential side wall of the sewage chamber 110. For example, it can be provided on either side wall of the sewage chamber 110 in the length direction, or it can be provided on either side wall of the sewage chamber 110 in the width direction. Optionally, in this embodiment, the clean water inlet 112 is provided in the width direction of the sewage chamber 110 (e.g., the side wall of the housing 117). Figure 21 On one side wall of the sewage chamber 110 (as shown in the Y1 direction), and the location of the clean water inlet 112 is approximately located along the length of the sewage chamber 110 (as shown in the Y1 direction). Figure 20 The middle area (shown in the X1 direction). When the self-cleaning mechanism 140 needs to operate, clean water in the clean water supply pipe flows into the inlet 131 through the clean water inlet 112, and then is transported to the interior of the self-cleaning mechanism 140 through the inlet channel 130. Figure 20 As shown, the bottom wall of the sewage chamber 110 is provided with a sewage outlet 113. The sewage outlet 113 can be located at the center of the bottom wall or at an eccentric position on the bottom wall, etc.

[0121] By providing a clean water inlet 112 on the side wall of the sewage chamber 110 and a drain outlet 113 on the bottom wall of the sewage chamber 110, the clean water inlet 112 can be conveniently positioned close to the opening 111 of the sewage chamber 110. This allows the clean water inlet 112 to be positioned away from the bottom wall of the sewage chamber 110, preventing sewage from entering the clean water inlet 112, thus preventing contamination of the clean water and ensuring its cleanliness. Furthermore, since sewage generated after cleaning the walls of the sewage chamber 110 and impurities within the sewage chamber 110 will settle at the bottom of the sewage chamber 110 under gravity, the drain outlet 113 on the bottom wall of the sewage chamber 110 can effectively discharge sewage and sediment, reducing long-term accumulation of sewage and dirt at the bottom of the sewage chamber 110 and improving the cleaning effect of the sewage tank 100.

[0122] Please see Figure 1 , Figure 4 and Figure 5 In one embodiment of this utility model, the cover 120 is rotatably connected to the sewage chamber 110 and can switch between a first position with the opening 111 closed and a second position with the opening 111 open. The rotatable connection can be a hinge connection, a pivot connection, etc. Specifically, in this embodiment, such as... Figure 4 and Figure 5 As shown, the housing 117 has two support shafts 1171 arranged side-by-side near the edge of the opening 111. The cover 120 has corresponding mounting holes 1201 at corresponding positions. Each support shaft 1171 is inserted into a mounting hole 1201 and can rotate within it. When the cover 120 switches between a first position (closing the opening 111) and a second position (opening the opening 111), the cover 120 rotates along the axis of the mounting hole 1201 via the support shafts 1171, thus achieving a rotatable connection between the cover 120 and the housing 117. This rotatable connection method is simple in structure and easy to install and position. It also ensures a stable and reliable rotatable connection between the cover 120 and the housing 117.

[0123] Please see Figure 5 and Figure 21The sewage chamber 110 is also equipped with a water inlet pipe 114, which connects the clean water inlet 112 and the water inlet 131. The water inlet pipe 114 can be a bent pipe, a straight pipe, or a combination of bent and straight pipes. The water inlet pipe 114 can be entirely a rigid pipe structure, entirely a flexible pipe structure, or partially a rigid pipe structure and partially a flexible pipe structure. Optionally, in this embodiment, the water inlet pipe 114 is entirely a flexible pipe structure. The flexible water inlet pipe 114 (such as a rubber hose, corrugated pipe, or silicone hose) has good bending and expansion properties, and can freely deform with the rotation of the cover 120, avoiding pipe pulling, deformation, or loosening of the interface due to the opening and closing of the cover 120, thereby ensuring the sealing and reliability of the water inlet channel 130.

[0124] In the above embodiment, the cover 120 is mounted on the sewage chamber 110 via a rotating connection. This design allows operators to quickly open the cover 120 for equipment maintenance, cleaning, or inspection without a complex disassembly and reinstallation process. For example, when it is necessary to clean the sediment in the sewage chamber 110 or inspect the internal equipment, simply rotate the cover 120 to the second position, greatly improving operational efficiency. A water inlet pipe 114 is provided inside the sewage chamber 110, making the connection between the clean water inlet 112 and the water inlet 131 more convenient and quick. During installation, simply connect both ends of the water inlet pipe 114 to the clean water inlet 112 and the water inlet 131 respectively; the operation is simple and easy to implement.

[0125] Please see Figure 22 and Figure 23 In one embodiment of this utility model, the drain outlet 113 is provided with a valve assembly 170, which opens the drain outlet 113 in response to the docking of the sewage tank 100 and the cleaning base station. In one embodiment, the valve assembly 170 can be a solenoid valve. A solenoid valve is a device that controls the opening and closing of a valve by controlling electromagnetic force. When the sewage tank 100 docks with the cleaning base station, the cleaning base station can send an electrical signal to activate the solenoid valve, thereby opening the drain outlet 113. In another embodiment, the valve assembly 170 can also be a pneumatic valve, which controls the opening and closing of the valve by air pressure. The cleaning base station can be equipped with an air pump and provide an air pressure signal when the sewage tank 100 docks with the cleaning base station to drive the pneumatic valve to open the drain outlet 113. In other embodiments, the valve assembly 170 can also be a mechanical valve. A mechanical valve can be opened and closed by physical contact or a mechanical structure. For example, the cleaning base station can be equipped with a cam or push rod, which directly pushes the valve to open when the sewage tank 100 docks with the cleaning base station.

[0126] In the above embodiment, the valve assembly 170 can automatically respond to the docking of the sewage tank 100 and the cleaning station, thereby automatically opening the sewage outlet 113 without manual operation. This design not only effectively improves the efficiency of opening the sewage outlet 113, but also reduces errors caused by improper human operation, such as forgetting to open or close the sewage outlet 113. Therefore, problems such as sewage leakage or equipment damage caused by operational errors can be avoided.

[0127] Please see Figure 22 and Figure 23 In one embodiment of this utility model, the valve assembly 170 includes a baffle 171 and a push rod 172. The baffle 171 is rotatably connected to the wall of the sewage chamber 110, and the push rod 172 is slidably disposed in the sewage chamber 110. The baffle 171 can be disposed inside or outside the sewage chamber 110. Optionally, in this embodiment, the baffle 171 is disposed outside the sewage chamber 110. There are various ways in which the baffle 171 is rotatably connected to the sewage chamber 110, including but not limited to a rotatable connection via a rotating shaft. Optionally, in this embodiment, the baffle 171 is rotatably mounted to the wall of the sewage chamber 110 via a rotating shaft 174. Specifically, a rotating shaft 174 is fixedly connected to the wall of the sewage chamber 110. The baffle 171 includes a plate body 1711 and a docking part 1712. Along the height direction of the sewage chamber 110, one end of the plate body 1711 is rotatably connected to the rotating shaft 174, and the other end of the plate body 1711 is fixedly connected to the docking part 1712. The docking part 1712 can be sealed and docked with the sewage outlet 113.

[0128] Please see Figure 22 and Figure 23 A groove 115 is provided inside the sewage chamber 110, with both ends of the groove 115 penetrating the opposite side walls of the sewage chamber 110 in the width direction. A push rod 172 is at least partially inserted into the groove 115, and the push rod 172 can slide along the extension direction of the groove 115 (i.e., the width direction of the sewage chamber 110). Specifically, the push rod 172 includes a sliding part 1721 and a pushing part 1722. One end of the sliding part 1721 is inserted into the groove 115, and the other end of the sliding part 1721 extends towards the baffle 171 and is fixedly connected to the pushing part 1722. The pushing part 1722 is disposed outside the groove 115 and can interact with the baffle 171 during the sliding of the sliding part 1721, pushing the baffle 171 to rotate.

[0129] Please see Figure 24In response to the docking of the sewage tank 100 and the cleaning base station, the push rod mechanism 310 on the cleaning base station pushes the push rod 172 to slide along the extension direction of the slide groove 115. The push rod 172 pushes the baffle 171 to rotate to open the sewage outlet 113. It should be noted that in this embodiment, the specific structure of the push rod mechanism 310 on the cleaning base station is not limited. For example, the push rod mechanism 310 can be an electric push rod structure, a pneumatic push rod mechanism, or a hydraulic push rod mechanism, or any mechanism that can push the push rod 172 to slide in the slide groove 115 when the sewage tank 100 and the cleaning base station are docked.

[0130] In the above embodiment, the push rod mechanism 310 on the cleaning base station automatically pushes the push rod 172 to slide, thereby pushing the baffle 171 to rotate and open the sewage outlet 113. The entire process does not require manual operation. This automated design can improve the convenience of opening the sewage outlet 113 and reduce manual intervention, especially in situations where the sewage outlet 113 needs to be opened frequently, which can effectively improve work efficiency.

[0131] Please see Figure 22 and Figure 23 In one embodiment of this utility model, the valve assembly 170 further includes an elastic reset member 173, which may be a spring, a torsion spring, or other elastic element. In response to the separation of the sewage tank 100 from the cleaning station, the elastic reset member 173 drives the baffle 171 to rotate in the opposite direction to close the drain outlet 113. Optionally, in this embodiment, the elastic reset member 173 is a compression spring. Specifically, the tank body 117 is provided with a clearance cavity 116 near the drain outlet 113, and the baffle 171 is disposed within the clearance cavity 116 and can rotate within it. The compression spring is disposed within the clearance cavity 116, with its two ends abutting against the baffle 171 and the cavity wall of the clearance cavity 116, respectively. During the process of the push rod 172 pushing the baffle 171 to rotate and open the drain outlet 113, the compression spring is compressed, storing spring force. In response to the separation of the sewage tank 100 from the cleaning station, the compression spring releases its spring force to drive the baffle 171 to rotate in the opposite direction and close the sewage outlet 113.

[0132] In the above embodiments, the elastic reset member 173 enables the automatic closing of the sewage outlet 113. When the sewage tank 100 is separated from the cleaning base station, the elastic reset member 173 can drive the baffle 171 to rotate in the opposite direction to close the sewage outlet 113, and the entire process requires no manual intervention. Therefore, this design can improve the efficiency of closing the sewage outlet 113 and enhance the convenience of the sewage outlet 113 closing operation.

[0133] Please see Figure 25 and Figure 26In one embodiment of this utility model, the cleaning device includes a clean water supply pipe, which connects the inlet 131 and the overflow port 410 of the clean water tank 400, which is disposed on the cleaning device. In other embodiments, the clean water tank 400 may also be disposed on a cleaning base station. When the cleaning device is connected to the cleaning base station, the clean water supply pipe connects the inlet 131 and the overflow port 410 of the clean water tank 400. By connecting the inlet 131 and the overflow port 410 of the clean water tank 400, when the water level in the clean water tank 400 exceeds a set height, the excess clean water will automatically flow out through the overflow port 410 and be automatically transported to the inlet 131 via the clean water supply pipe, thereby realizing the clean water supply to the self-cleaning mechanism 140 inside the sewage chamber 110. Therefore, there is no need to configure a separate water pump for the self-cleaning mechanism 140, and the entire water supply process of the self-cleaning mechanism 140 can share a water pump with the water filling process of the clean water tank 400. This design simplifies the equipment structure and reduces manufacturing costs. Furthermore, it utilizes the natural overflow principle of the 400-cell clean water tank for water supply, eliminating the need for additional energy consumption and thus achieving energy-saving and environmentally friendly effects.

[0134] This utility model also provides a cleaning base station, which is used in conjunction with the cleaning equipment in the above embodiments. The cleaning base station includes the wastewater tank 100 in any of the above embodiments. When the cleaning equipment returns to the cleaning base station after completing the cleaning operation, the wastewater generated by the cleaning equipment during the cleaning operation is pumped back into the wastewater tank 100. For the specific structure of the wastewater tank 100 in this embodiment, please refer to the relevant description of the wastewater tank 100 in the above embodiments, which will not be repeated here. Since this cleaning base station adopts the technical solution of the above-described wastewater tank 100 embodiment, it at least has the beneficial effects brought by the technical solution of the above embodiments.

[0135] In one embodiment of the clean base station of this utility model, the clean base station includes a clean water supply pipe, which connects the inlet 131 and the overflow port 410 of the clean water tank 400, which is disposed in the clean base station. In other embodiments, the clean water tank 400 can also be disposed in the cleaning equipment. When the cleaning equipment is connected to the clean base station, the clean water supply pipe connects the inlet 131 and the overflow port 410 of the clean water tank 400. By connecting the inlet 131 and the overflow port 410 of the clean water tank 400, when the water level in the clean water tank 400 exceeds a set height, the excess clean water will automatically flow out through the overflow port 410 and be automatically transported to the inlet 131 through the clean water supply pipe, thereby realizing the clean water supply to the self-cleaning mechanism 140 inside the sewage chamber 110. Therefore, there is no need to configure a separate water pump for the self-cleaning mechanism 140, and the entire water supply process of the self-cleaning mechanism 140 can share a water pump with the water filling process of the clean water tank 400. This design simplifies the equipment structure and reduces manufacturing costs. Furthermore, it utilizes the natural overflow principle of the 400-cell clean water tank for water supply, eliminating the need for additional energy consumption and thus achieving energy-saving and environmentally friendly effects.

[0136] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A sewage tank (100), characterized in that, include: A sewage chamber (110) having an opening (111) at its top; A lid (120) is detachably fitted into the opening (111); A water inlet channel (130) is provided on the tank cover (120) and has a water outlet (132) and a water inlet (131) that can be connected to a clean water supply pipe; A self-cleaning mechanism (140) is provided on the tank cover (120) and located inside the sewage chamber (110). The self-cleaning mechanism (140) includes a water supply port (141) and a spray port (142). The water supply port (141) is connected to the water outlet (132). The reverse thrust generated by the water sprayed from the nozzle (142) drives the self-cleaning mechanism (140) to rotate.

2. The sewage tank (100) according to claim 1, characterized in that, The self-cleaning mechanism (140) includes a rotating arm (143), which is rotatably mounted on the box cover (120), and the water spray nozzle (142) is disposed on the rotating arm (143); The rotating arm (143) has a water flow channel (1431) inside, which connects the water supply port (141) and the spray port (142).

3. The sewage tank (100) according to claim 2, characterized in that, The rotating arm (143) includes a rotating shaft (1432) and a rod (1433). One end of the rotating shaft (1432) is rotatably connected to the box cover (120), and the other end is connected to the rod (1433). The water spray nozzle (142) is disposed on the rod (1433).

4. The sewage tank (100) according to claim 3, characterized in that, The water flow channel (1431) includes a first channel (14311) and a second channel (14312) that are interconnected. The first channel (14311) extends along the axial direction of the rotating shaft (1432), and the upper part of the first channel (14311) passes through the rotating shaft (1432), and the lower part of the first channel (14311) is connected to one end of the second channel (14312); The other end of the second channel (14312) extends along the length of the rod (1433), and the water nozzle (142) is disposed on the side wall of the second channel (14312).

5. The sewage tank (100) according to claim 3, characterized in that, The box cover (120) includes a receiving cavity (123), the rotating shaft (1432) is rotatably mounted in the receiving cavity (123), and the rod (1433) extends to the outside of the receiving cavity (123); The water outlet (132) is located on the bottom wall of the receiving cavity (123), and the water supply port is located on the rotating shaft and is connected to the water outlet (132) vertically.

6. The sewage tank (100) according to claim 3, characterized in that, The rotating shaft (1432) and the rod (1433) are connected by a snap-fit ​​structure (150); The snap-fit ​​structure (150) includes a snap-fit ​​block (151) and a snap-fit ​​groove (152). The snap-fit ​​block (151) and the snap-fit ​​groove (152) are snap-fitted into each other. The snap-fit ​​block (151) and the snap-fit ​​groove (152) are respectively disposed on the rotating shaft (1432) and the rod body (1433).

7. The sewage tank (100) according to claim 3, characterized in that, The rotating shaft (1432) is rotatably mounted on the box cover (120) via a bearing (144); the box cover is provided with a receiving cavity (123), the receiving cavity (123) includes a blind hole section (1231) and a platform stage (1232), the platform stage (1232) is disposed relative to the blind hole section (1231) and close to the opening (111) of the receiving cavity (123); The rotating shaft (1432) includes a flange portion (14321) and a column portion (14322). The column portion (14322) connects the flange portion (14321) and the rod body (1433). The bearing (144) is fitted and installed with the column portion (14322). The flange portion (14321) is installed in the blind hole section (1231). The bearing (144) is installed in the platform stage (1232) and provides support for the end of the flange portion (14321) facing the platform stage (1232).

8. The sewage tank (100) according to claim 7, characterized in that, A sealing cover (160) is provided at the opening (111) of the receiving cavity (123). The sealing cover (160) provides support for the end of the bearing (144) away from the blind hole section (1231) and seals the installation gap between the bearing (144) and the stage section (1232).

9. The sewage tank (100) according to claim 3, characterized in that, The water nozzle (142) is disposed at at least one end of the rod (1433) along its length, and the water spraying direction of the water nozzle (142) is set at an angle to the length direction of the rod (1433).

10. The sewage tank (100) according to claim 9, characterized in that, There are two water nozzles (142), which are respectively located at both ends of the rod (1433) along its length, and the water spraying directions of the two water nozzles (142) are opposite.

11. The sewage tank (100) according to any one of claims 1 to 10, characterized in that, The cover (120) is provided with at least two self-cleaning mechanisms (140), and the water inlet channel (130) is provided with at least two water outlets (132), with one self-cleaning mechanism (140) corresponding to one water outlet (132).

12. The sewage tank (100) according to claim 11, characterized in that, The cover (120) includes a cover body (121) and a cover plate (122). The cover body (121) has a groove (1211), and the cover plate (122) covers the groove (1211) so that the groove (1211) and the cover plate (122) together define at least a portion of the water inlet channel (130).

13. The sewage tank (100) according to claim 11, characterized in that, The side wall of the sewage chamber (110) is provided with a clean water inlet (112), which is connected to the water inlet (131), and the bottom wall of the sewage chamber (110) is provided with a sewage outlet (113).

14. The sewage tank (100) according to claim 13, characterized in that, The sewage outlet (113) is equipped with a valve assembly (170), which opens the sewage outlet (113) in response to the docking of the sewage tank (100) with the cleaning base station.

15. The sewage tank (100) according to claim 14, characterized in that, The valve assembly (170) includes a baffle (171) and a push rod (172). The baffle (171) is rotatably connected to the wall of the sewage chamber (110), and the push rod (172) is slidably disposed in the sewage chamber (110). In response to the docking of the sewage tank (100) with the cleaning station, the push rod (172) slides under the drive of the push rod mechanism (310) on the cleaning station to push the baffle (171) to rotate and open the sewage outlet (113).

16. The sewage tank (100) according to claim 15, characterized in that, The valve assembly (170) further includes a resilient reset member (173) which is mounted on the baffle (171) and / or the cavity wall of the sewage chamber (110). In response to the separation of the sewage tank (100) from the cleaning station, the resilient reset member (173) causes the baffle (171) to rotate in the opposite direction to close the sewage outlet (113).

17. A cleaning device, characterized in that, The cleaning equipment includes the wastewater tank (100) according to any one of claims 1 to 16.

18. The cleaning equipment according to claim 17, characterized in that, The cleaning equipment includes a clean water supply pipe, which connects the water inlet (131) and the overflow port (410) of the clean water tank (400), and the clean water tank (400) is located in the cleaning equipment or cleaning base station.

19. A clean base station, characterized in that, The clean base station includes a wastewater tank (100) according to any one of claims 1 to 16.

20. The clean base station according to claim 19, characterized in that, The clean base station includes a clean water supply pipe, which connects the water inlet (131) and the overflow port (410) of the clean water tank (400). The clean water tank (400) is located in the cleaning equipment or the clean base station.

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