Self-cleaning drainage device, cleaning equipment and cleaning system

Abstract

The utility model provides a self-cleaning drainage device, cleaning equipment and a cleaning system. The self-cleaning drainage device comprises a sewage tank, a clear water tank and a suction device, the sewage tank comprises a clear water inlet and a self-cleaning mechanism, and the self-cleaning mechanism introduces clear water from the clear water inlet to wash the inner wall of the sewage tank; the clear water tank is used for containing clear water and is provided with an overflow port; the suction device is used for sucking clean water into the clean water tank; and the clean water inlet is communicated with the overflow port, so that clean water flowing out of the overflow port can be drained to the self-cleaning mechanism under the action of gravity. The self-cleaning drainage device can reduce the clear water supply cost of the self-cleaning mechanism in the sewage tank.

Description

Technical Field

[0001] This utility model relates to the technical field of cleaning equipment, specifically to a self-cleaning drainage device, cleaning equipment, and cleaning system. Background Technology

[0002] Existing cleaning equipment typically includes a wastewater tank to collect wastewater generated during wet cleaning operations (such as rags and rollers). However, after prolonged use, the inner walls of the wastewater tank tend to accumulate dirt and residue, requiring regular cleaning. To address this, current technology usually incorporates a self-cleaning mechanism inside the wastewater tank. This mechanism automatically cleans the inner walls of the tank by spraying clean water.

[0003] Currently, the self-cleaning mechanism of wastewater tanks typically relies on an independent water supply system (such as additional pumps and pipelines) to achieve its cleaning function. However, the introduction of such an independent water supply system not only increases the clean water supply cost of the self-cleaning mechanism but also makes the entire cleaning equipment more complex and leads to increased manufacturing costs. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a self-cleaning diversion device, cleaning equipment and cleaning system. The self-cleaning diversion device can reduce the clean water supply cost of the self-cleaning mechanism in the sewage tank.

[0005] To achieve the above and other related objectives, the first aspect of this utility model provides a self-cleaning drainage device, comprising: a sewage tank, a clean water tank, and a suction device; the sewage tank includes a clean water inlet and a self-cleaning mechanism, wherein the self-cleaning mechanism introduces clean water from the clean water inlet to flush the inner wall of the sewage tank; the clean water tank is used to hold clean water and is provided with an overflow port; the suction device is used to draw clean water into the clean water tank; wherein the clean water inlet is connected to the overflow port so that the clean water flowing out of the overflow port can be guided to the self-cleaning mechanism under the action of gravity.

[0006] The advantages of this design are as follows: Since the clean water inlet is connected to the overflow outlet of the clean water tank, when the clean water tank is filled, excess clean water will be discharged through the overflow outlet after the water level reaches the preset height. This portion of clean water can be naturally diverted to the self-cleaning mechanism under gravity to flush the inner wall of the wastewater tank. Because this design utilizes the overflow water generated during the filling process of the clean water tank as the clean water supply source for the self-cleaning mechanism, the clean water supply for the self-cleaning mechanism and the clean water filling of the clean water tank can share a single suction device. There is no need to set up a separate clean water supply system for the self-cleaning mechanism, which not only effectively reduces the clean water supply cost of the self-cleaning mechanism, but also simplifies the overall structure of the self-cleaning diversion device and reduces the overall manufacturing cost.

[0007] In one embodiment of this utility model, the clean water tank includes a mounting cavity, and the wastewater tank is embedded in the mounting cavity.

[0008] The advantages of this design are as follows: By embedding the wastewater tank within the mounting cavity, the wastewater tank and clean water tank can be integrated, reducing the horizontal space occupied by the wastewater and clean water tanks on the cleaning equipment or cleaning base station. This optimizes the spatial layout of the cleaning equipment or cleaning base station and improves structural compactness. Furthermore, the integrated design facilitates the installation and removal of the wastewater and clean water tanks from the cleaning equipment or cleaning base station, enhancing ease of use.

[0009] In one embodiment of this utility model, at least a portion of the clean water chamber in the clean water tank is located above the sewage tank, and the overflow port position corresponds to the highest liquid level of the clean water chamber above the sewage tank.

[0010] The beneficial effects of this design are as follows: Since the overflow outlet is positioned corresponding to the highest liquid level in the clear water chamber above the wastewater tank, this ensures that the overflow outlet is always higher than the clear water inlet on the wastewater tank. When the clear water level reaches the preset height, excess clear water can flow more smoothly into the self-cleaning mechanism of the wastewater tank under gravity. This structural design ensures smooth flow of clear water between the overflow outlet and the clear water inlet, improving the stability of the clear water inflow into the self-cleaning mechanism. Furthermore, it prevents water accumulation between the overflow outlet and the clear water inlet, thus preventing leakage.

[0011] In one embodiment of this utility model, a one-way valve is provided between the overflow port and the clean water inlet, and the one-way valve is configured to open in the direction from the overflow port to the clean water inlet.

[0012] The beneficial effects of this design are as follows: By installing a one-way valve between the overflow port and the clean water inlet, and configuring the one-way valve to open from the overflow port to the clean water inlet, it effectively prevents sewage from flowing back into the clean water tank, ensuring the cleanliness of the clean water supply system. Simultaneously, due to the one-way valve, when the water level in the clean water tank exceeds a preset height, the water pressure will automatically open the one-way valve, thereby enabling the automatic supply of clean water to the self-cleaning mechanism within the sewage chamber.

[0013] In one embodiment of this utility model, both the sewage tank and the clean water tank are installed in the cleaning equipment.

[0014] The advantages of this setup are as follows: Since both the wastewater tank and the clean water tank are located on the cleaning equipment, their relative positions remain fixed. Therefore, after the initial connection between the clean water inlet and the overflow outlet, there is no need to reconnect them each time the self-cleaning mechanism supplies water. This fixed connection method ensures the stability of the connection between the two, reduces damage to the interface locations caused by frequent connections, and thus extends the service life of the corresponding interface components and improves their reliability.

[0015] In one embodiment of this utility model, the suction device is disposed on the cleaning equipment; or, the suction device is disposed on the cleaning base station.

[0016] The advantages of this design are as follows: By integrating the suction device into the cleaning equipment, both the suction device and the clean water tank can be combined. Because the distance between the suction device and the clean water tank is shorter, the inlet pipe can be designed to be shorter, thus reducing pipe complexity and length. This not only simplifies the overall structure of the self-cleaning drainage device but also reduces the risk of leakage, blockage, or damage between the suction device and the clean water tank due to excessively long pipes, thereby improving the stability of the clean water tank's inlet flow.

[0017] By integrating the suction device onto the cleaning base station, the cleaning equipment itself no longer needs to carry the suction device, thus reducing its overall weight and size. This not only improves the portability and flexibility of the cleaning equipment but also reduces malfunctions caused by vibration or wear of the suction device during movement, thereby extending the service life of the cleaning equipment.

[0018] In one embodiment of this utility model, a sewage tank is installed on a cleaning device, and a clean water tank is installed on a cleaning base station. In response to the cleaning device stopping at the cleaning base station, the overflow port is connected to the clean water inlet.

[0019] The beneficial effects of this setup are as follows: By placing the wastewater tank at the cleaning equipment and the clean water tank at the cleaning base station, only the wastewater tank moves with the cleaning equipment during cleaning operations, while the clean water tank remains fixed at the base station. This significantly reduces the weight of the cleaning equipment, lowers the load on the drive motor, and extends the battery life of the cleaning equipment.

[0020] In one embodiment of this utility model, both the sewage tank and the clean water tank are installed at the cleaning base station.

[0021] The advantages of this configuration are as follows: By placing both the wastewater tank and the clean water tank at the cleaning station, a connection can be established between the clean water inlet of the wastewater tank and the overflow outlet of the clean water tank. Furthermore, the self-cleaning mechanism on the cleaning station can utilize the excess clean water discharged from the overflow outlet of the clean water tank as its own clean water supply, thus enabling both the self-cleaning mechanism and the clean water tank to share a single suction device. This design not only simplifies the structural design of the cleaning station but also reduces its manufacturing cost.

[0022] The second aspect of this utility model provides a cleaning device, which includes the self-cleaning drainage device of any of the above embodiments.

[0023] A third aspect of this utility model provides a cleaning system, which includes the self-cleaning drainage device of any of the above embodiments. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a three-dimensional structural diagram of the sewage tank of this utility model in one embodiment;

[0026] Figure 2 for Figure 1 Top view of the wastewater tank in the embodiment;

[0027] Figure 3 for Figure 2 A sectional view along direction AA;

[0028] Figure 4 This is a schematic diagram of the sewage tank of this utility model after the tank cover has been removed in one embodiment;

[0029] 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;

[0030] Figure 6 This is a three-dimensional structural diagram of the sewage tank of this utility model from another angle in one embodiment;

[0031] Figure 7 for Figure 6 A sectional view along the CC direction;

[0032] Figure 8 for Figure 7 A magnified view of a portion of region D in the middle;

[0033] Figure 9 This is a partial structural cross-sectional view of the sewage tank of this utility model in one embodiment;

[0034] Figure 10 for Figure 9 A magnified view of a portion of region E in the middle;

[0035] 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.

[0036] Figure 12 for Figure 11 The embodiment shows a projection view of the box cover from another angle;

[0037] Figure 13 for Figure 12 A sectional view along the FF direction;

[0038] 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;

[0039] Figure 15 for Figure 14 A magnified view of a portion of region G in the middle;

[0040] 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;

[0041] Figure 17 for Figure 16 A partial sectional view along the HH direction;

[0042] 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;

[0043] Figure 19 for Figure 18 A partial sectional view along direction II;

[0044] 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;

[0045] 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;

[0046] 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;

[0047] Figure 23This is a schematic diagram of the valve assembly opening the drain port in one embodiment of the sewage tank of this utility model;

[0048] 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;

[0049] Figure 25 This is a schematic diagram of the self-cleaning drainage device at an angle in one embodiment of the present invention;

[0050] Figure 26 This is a schematic diagram of the self-cleaning drainage device from another angle in one embodiment of the present invention;

[0051] Figure 27 This is an exploded schematic diagram of the sewage tank and the clean water tank in a self-cleaning diversion device according to an embodiment of the present invention;

[0052] Figure 28 This is a schematic diagram of a self-cleaning diversion device with a one-way valve installed at the clean water inlet in one embodiment of the present invention.

[0053] Component designation explanation:

[0054] 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, 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, Rotating arm; 1431, Water flow channel; 14311, First channel; 14312, Second channel; 1432, Rotating shaft; 14 321. Flange; 14322. Column; 1433. Rod; 14331. Mounting part; 14332. Extension section; 144. Bearing; 150. Snap-fit ​​structure; 151. Locking block; 152. Locking groove; 160. Sealing cover; 161. Annular groove; 170. Valve assembly; 171. Baffle; 1711. Plate; 1712. Butt joint; 172. Push rod; 1721. Sliding part; 17 22. Pushing part; 173. Elastic reset part; 174. Rotary shaft; 190. Tank cover assembly; 200. Suction device; 310. Push rod mechanism; 400. Clean water tank; 410. Overflow port; 420. Clean water chamber; 421. First clean water chamber; 422. Second clean water chamber; 423. Third clean water chamber; 430. One-way valve; 431. Connecting pipeline; 440. Mounting cavity; 500. Self-cleaning drainage device. Detailed Implementation

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Please see Figures 1 to 28 This utility model provides a self-cleaning diversion device 500, a cleaning device, and a cleaning system. The self-cleaning diversion device 500 connects the clean water inlet 112 on the sewage tank 100 to the overflow port 410 of the clean water tank 400, allowing the clean water flowing out of the overflow port 410 to be naturally diverted to the self-cleaning mechanism 140 under the action of gravity. Since this design uses the overflow water generated during the filling process of the clean water tank 400 as the clean water supply source for the self-cleaning mechanism 140, there is no need to set up an independent clean water supply system for the self-cleaning mechanism 140, thereby effectively reducing the clean water supply cost of the self-cleaning mechanism 140.

[0059] Please see Figures 25 to 28 The first aspect of this application provides a self-cleaning drainage device 500, which includes a wastewater tank 100, a clean water tank 400, and a suction device 200. The wastewater tank 100 includes a clean water inlet 112 and a self-cleaning mechanism 140. The self-cleaning mechanism 140 introduces clean water through the clean water inlet 112 to flush the inner wall of the wastewater tank 100. For details, please refer to... Figure 1 , Figure 3 and Figure 4 The wastewater tank 100 includes a cover 120 and a body 117. The inner cavity of the body 117 forms a wastewater chamber 110, and an opening 111 is formed at the top of the wastewater chamber 110. A self-cleaning mechanism 140 is disposed inside the wastewater chamber 110, and the cover 120 closes to the opening 111 of the wastewater chamber 110. The clean water inlet 112 can be disposed in the cover 120 or in any other location, such as the body 117. To facilitate the introduction of clean water into the self-cleaning mechanism 140 through the clean water inlet 112, other water inlet pipes can also be disposed inside the cover 120 or the wastewater chamber 110; this embodiment is not limited to this.

[0060] It should be noted that, provided that the self-cleaning mechanism 140 meets the requirement of flushing the inner wall of the sewage tank 100, the specific structural shape of the self-cleaning mechanism 140 is not limited in this embodiment. For example, the self-cleaning mechanism 140 can be a nozzle structure driven to rotate by a drive mechanism, or it can be a self-rotating nozzle structure driven by water pressure, etc.

[0061] Please see Figure 26 and Figure 27 The clean water tank 400 is used to hold clean water, and an overflow port 410 is provided on the clean water tank 400. The overflow port 410 is located on the top wall or a side wall near the top wall of the clean water tank 400. When the water level in the clean water tank 400 reaches a preset level, excess clean water in the clean water tank 400 will be discharged from the overflow port 410, thereby preventing the water level in the clean water tank 400 from becoming too high. It should be noted that the clean water tank 400 and the wastewater tank 100 can be arranged in several ways. In one embodiment, the clean water tank 400 and the wastewater tank 100 are integrated into the same device, for example, both are installed on a cleaning device. In another embodiment, the clean water tank 400 and the wastewater tank 100 can be installed on different devices. For example, the clean water tank 400 is installed on a cleaning base station, while the wastewater tank 100 is installed on a cleaning device. When the wastewater tank 100 needs to be replenished with clean water, the cleaning equipment will return to the cleaning base station and replenish the clean water from the clean water tank 400 of the cleaning base station through a connection device (such as a pipe or interface).

[0062] Please see Figure 26 The suction device 200 is used to draw clean water into the clean water tank 400. Specifically, the suction device 200 can directly draw water from the tap water supply pipe into the clean water tank 400, or it can draw clean water from other tanks into the clean water tank 400. The suction device 200 can be any device capable of drawing clean water into the clean water tank 400, such as an electric water pump or a pneumatic water pump. The suction device 200 can be integrated with the clean water tank 400, or it can be installed on a separate device. The clean water tank 400 is only connected to the suction device 200 when it needs to be filled with water. The clean water inlet 112 is connected to the overflow port 410 so that the clean water flowing out of the overflow port 410 can be guided to the self-cleaning mechanism 140 under the action of gravity. The clean water inlet 112 can be directly connected to the overflow outlet 410, or it can be connected to the overflow outlet 410 through other water inlet pipes. This embodiment is not limited to this.

[0063] In the above embodiment, since the clean water inlet 112 is connected to the overflow port 410 of the clean water tank 400, when the clean water tank 400 is filled with water, excess clean water will be discharged through the overflow port 410 after the water level reaches a preset height. This portion of clean water can be naturally guided to the self-cleaning mechanism 140 under the action of gravity to flush the inner wall of the sewage tank 100. Since this design uses the overflow water generated during the filling process of the clean water tank 400 as the clean water supply source for the self-cleaning mechanism 140, the clean water supply of the self-cleaning mechanism 140 and the clean water filling of the clean water tank 400 can share a single suction device 200, eliminating the need to set up an independent clean water supply system for the self-cleaning mechanism 140. This not only effectively reduces the clean water supply cost of the self-cleaning mechanism 140, but also simplifies the overall structure of the self-cleaning diversion device 500 and reduces the overall manufacturing cost.

[0064] In one embodiment of this utility model, both the wastewater tank 100 and the clean water tank 400 are installed on the cleaning equipment. The wastewater tank 100 and the clean water tank 400 can be installed separately on the cleaning equipment, or they can be integrated and assembled together before being installed on the cleaning equipment. Since both the wastewater tank 100 and the clean water tank 400 are installed on the cleaning equipment, their relative positions remain fixed. Therefore, after the initial connection between the clean water inlet 112 and the overflow port 410, it is not necessary to reconnect the clean water inlet 112 and the overflow port 410 each time the self-cleaning mechanism 140 supplies water. This fixed connection method ensures the stability of the connection between the two, reduces damage to the interface position caused by frequent connections, thereby extending the service life of the corresponding interface components and improving their reliability.

[0065] In one embodiment of this utility model, the clean water tank 400 and the suction device 200 are both located on the same cleaning device. This arrangement integrates both the suction device 200 and the clean water tank 400 onto the same cleaning device. Because the distance between the suction device 200 and the clean water tank 400 is short, the inlet pipe can be designed to be shorter, thus reducing the complexity and length of the pipe. This not only simplifies the overall structure of the self-cleaning drainage device 500 but also reduces the risk of leakage, blockage, or damage between the suction device 200 and the clean water tank 400 due to excessively long pipes, thereby improving the stability of water intake to the clean water tank 400.

[0066] In another embodiment, a clean water tank 400 is disposed in the cleaning equipment, and a suction device 200 is disposed in the cleaning base station. Since the suction device 200 is disposed in the cleaning base station, the cleaning equipment itself does not need to carry the suction device 200, thus reducing the overall weight and size of the cleaning equipment. This not only improves the portability and flexibility of the cleaning equipment but also reduces malfunctions caused by vibration or wear of the suction device 200 during movement, thereby extending the service life of the cleaning equipment.

[0067] Please see Figure 25 and Figure 27 In one embodiment of this utility model, the clean water tank 400 includes a mounting cavity 440, the shape and size of which match the shape and size of the wastewater tank 100, and the wastewater tank 100 is fitted into the mounting cavity 440. The mounting cavity 440 can be located on the lower side of the clean water tank 400, or on the upper side of the clean water tank 400, or any other position. Optionally, in this embodiment, along the height direction of the clean water tank 400 (e.g., Figure 25 As shown in the Z1 direction, the mounting cavity 440 is located below the clean water tank 400, meaning the wastewater tank 100 is located below the clean water tank 400. This arrangement, with the water levels in both the wastewater tank 100 and the clean water tank 400 changing, helps maintain the balance of the integrated structure of the clean water tank 400 and the wastewater tank 100 during use.

[0068] In the above embodiments, by embedding the wastewater tank 100 within the mounting cavity 440, the wastewater tank 100 and the clean water tank 400 can be integrated, reducing the horizontal area occupied by the clean water tank 400 and the wastewater tank 100 on the cleaning equipment or cleaning base station. This optimizes the spatial layout of the cleaning equipment or cleaning base station and improves the structural compactness. Furthermore, the integrated design of the wastewater tank 100 and the clean water tank 400 facilitates their installation and removal from the cleaning equipment or cleaning base station, improving ease of use.

[0069] Please see Figures 25 to 27 In one embodiment of this utility model, the clean water tank 400 includes a clean water cavity 420, which can be one or more. At least a portion of the clean water cavities 420 within the clean water tank 400 are positioned above the wastewater tank 100 along the height direction of the clean water tank 400. The overflow port 410 corresponds to the highest liquid level of the clean water cavity 420 above the wastewater tank 100. Optionally, in this embodiment, multiple clean water cavities 420 are provided, one of which is positioned above the wastewater tank 100, while the other clean water cavities 420 can be positioned at any location such as the front, rear, left, or right side of the wastewater tank 100. For details, please refer to... Figure 26 and Figure 27 In this embodiment, the clean water tank 400 is provided with three clean water chambers 420, respectively labeled as the first clean water chamber 421, the second clean water chamber 422, and the third clean water chamber 423. The inner cavities of the first clean water chamber 421, the second clean water chamber 422, and the third clean water chamber 423 are interconnected. The second clean water chamber 422 and the third clean water chamber 423 are respectively located on both sides of the wastewater tank 100. The first clean water chamber 421 is located above the wastewater tank 100. An overflow port 410 is located in the first clean water chamber 421. Specifically, the overflow port 410 can be located on the top wall or the side wall of the first clean water chamber 421, as long as the position of the overflow port 410 corresponds to the highest liquid level in the first clean water chamber 421. Optionally, in this embodiment, please refer to... Figure 26 The overflow port 410 is located on the side wall of the first clear water chamber 421.

[0070] In the above embodiment, since the overflow port 410 corresponds to the highest liquid level of the clear water chamber 420 above the sewage tank 100, this arrangement ensures that the overflow port 410 is always positioned higher than the clear water inlet 112 on the sewage tank 100. When the water level in the clear water tank 400 reaches a preset height, excess clear water can flow more smoothly into the self-cleaning mechanism 140 of the sewage tank 100 through the overflow port 410 under the action of gravity. This structural design, on the one hand, ensures the smooth flow path of clear water between the overflow port 410 and the clear water inlet 112, improving the stability of clear water inflow into the self-cleaning mechanism 140. On the other hand, it also prevents water accumulation between the overflow port 410 and the clear water inlet 112, thereby preventing water leakage between the overflow port 410 and the clear water inlet 112.

[0071] Please see Figure 28In one embodiment of this utility model, a one-way valve 430 is provided between the overflow port 410 and the clean water inlet 112. The one-way valve 430 is configured to open from the overflow port 410 to the clean water inlet 112. The one-way valve 430 can be directly installed on the overflow port 410 or the clean water inlet 112, or it can be provided on the connecting pipe between the overflow port 410 and the clean water inlet 112. This embodiment is not limited to this. Optionally, in this embodiment, a connecting pipe 431 is provided at the overflow port 410, and the one-way valve 430 is provided on the connecting pipe 431. By providing a one-way valve 430 between the overflow port 410 and the clean water inlet 112, and configuring the one-way valve 430 to open from the overflow port 410 to the clean water inlet 112, the backflow of sewage in the sewage tank 100 into the clean water tank 400 can be effectively prevented, ensuring the cleanliness of the clean water supply system. Meanwhile, due to the presence of a one-way valve 430, when the water level in the clean water tank 400 exceeds the preset height, the water pressure causes the one-way valve 430 to open automatically, thereby enabling the automatic supply of clean water to the self-cleaning mechanism 140 in the sewage chamber 110.

[0072] In one embodiment of this utility model, a wastewater tank 100 is disposed on a cleaning device, and a clean water tank 400 is disposed on a cleaning base station. In response to the cleaning device docking at the cleaning base station, an overflow port 410 is connected to a clean water inlet 112. It should be noted that, in addition to providing cleaning water to the self-cleaning mechanism 140 in the wastewater tank 100, the clean water tank 400 can also serve multiple other functions. For example, the clean water tank 400 can provide clean water for cleaning components on the cleaning device returning to the cleaning base station; it can also replenish clean water to other tanks on the cleaning device returning to the cleaning base station, which can replenish clean water to cleaning components during the cleaning operation; or it can provide clean water for both cleaning components and replenishing clean water to other tanks on the cleaning device.

[0073] It should be noted that, in this embodiment, in order to facilitate the filling of the clean water tank 400, the suction device 200 is also correspondingly installed on the cleaning base station.

[0074] In the above embodiments, by setting the wastewater tank 100 on the cleaning equipment and the clean water tank 400 on the cleaning base station, when the cleaning equipment is performing cleaning operations, only the wastewater tank 100 moves with the cleaning equipment, while the clean water tank 400 is fixed to the base station. This can significantly reduce the weight of the cleaning equipment, reduce the load on the drive motor, and extend the battery life of the cleaning equipment.

[0075] In one embodiment of this utility model, both the wastewater tank 100 and the clean water tank 400 are installed at the cleaning base station. The wastewater tank 100 is used to collect and store wastewater generated by the cleaning equipment during operation. When the cleaning equipment docks at the cleaning base station, the wastewater temporarily stored inside the cleaning equipment is transferred to the wastewater tank 100 of the cleaning base station through an automatic docking structure. In this embodiment, by installing both the wastewater tank 100 and the clean water tank 400 at the cleaning base station, the clean water inlet 112 of the wastewater tank 100 and the overflow port 410 of the clean water tank 400 can be connected. Furthermore, the self-cleaning mechanism 140 on the cleaning base station can use the excess clean water discharged from the overflow port 410 of the clean water tank 400 as its clean water supply, thereby realizing that the clean water supply of the self-cleaning mechanism 140 and the clean water supply of the clean water tank 400 share a single suction device 200. This design not only simplifies the structural design of the cleaning base station but also reduces its manufacturing cost.

[0076] The second aspect of this application 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 for cleaning the surface to be cleaned. The cleaning components can be a disc mop, a roller mop, a tracked mop, etc. To improve the cleaning effect of the cleaning device, the cleaning components usually have a wet cleaning function. The cleaning device also includes the self-cleaning drainage device 500 in the above embodiments. Specifically, the clean water tank 400 and the wastewater tank 100 in the self-cleaning drainage device 500 are both located on the body. The clean water tank 400 is used to replenish clean water to the cleaning components so that the cleaning components can remain moist during cleaning operations, achieving wet cleaning of the surface to be cleaned. The wastewater tank 100 is used to store wastewater, and the wastewater generated by the cleaning components during mopping is pumped into the wastewater tank 100.

[0077] Since both the wastewater tank 100 and the clean water tank 400 are installed on the cleaning equipment, the clean water supply of the self-cleaning mechanism 140 in the wastewater tank 100 and the clean water supply of the clean water tank 400 can share a single suction device 200. There is no need to set up an independent clean water supply system for the self-cleaning mechanism 140. This not only effectively reduces the clean water supply cost of the self-cleaning mechanism 140, but also simplifies the overall structure of the cleaning equipment and reduces its manufacturing cost.

[0078] A third aspect of this application also provides a cleaning system, which includes the self-cleaning drainage device 500 in any of the above embodiments.

[0079] In one embodiment of this utility model, the cleaning system may include only the cleaning equipment described in the above embodiments. The specific structure of the cleaning equipment has been described in detail in the above embodiments and will not be repeated here.

[0080] In another embodiment of this utility model, the cleaning system may consist only of a cleaning base station. The cleaning base station includes the self-cleaning diversion device 500 described in the above embodiments. The cleaning base station is used in conjunction with the cleaning equipment described in the above embodiments to achieve the functions of wastewater recycling and clean water replenishment for the cleaning equipment. Specifically, the clean water tank 400 and wastewater tank 100 in the self-cleaning diversion device 500 are both located at the cleaning base station. When the cleaning equipment returns to the cleaning base station after completing its cleaning operation, the wastewater temporarily stored during the cleaning process is transferred to the wastewater tank 100 via a back-pumping device. Since both the wastewater tank 100 and the clean water tank 400 are installed on the cleaning base station, the clean water supply of the self-cleaning mechanism 140 in the wastewater tank 100 and the clean water filling of the clean water tank 400 can share a single suction device 200. There is no need to set up an independent clean water supply system for the self-cleaning mechanism 140. This not only effectively reduces the clean water supply cost of the self-cleaning mechanism 140, but also simplifies the overall structure of the cleaning base station and reduces its manufacturing cost.

[0081] In another embodiment of this utility model, the cleaning system includes cleaning equipment and a cleaning base station. The cleaning system includes a self-cleaning drainage device 500. A wastewater tank 100 in the self-cleaning drainage device 500 is disposed on the cleaning equipment, and a clean water tank 400 in the self-cleaning drainage device 500 is disposed on the cleaning base station. In response to the cleaning equipment docking at the cleaning base station, the overflow port 410 of the clean water tank 400 is connected to the clean water inlet 112 of the wastewater tank 100. It should be noted that, in addition to providing cleaning water to the self-cleaning mechanism 140 in the wastewater tank 100, the clean water tank 400 can also have various other functions. For example, the clean water tank 400 can provide clean water for cleaning components on the cleaning equipment returning to the cleaning base station; it can also be used to replenish clean water to other containers on the cleaning equipment returning to the cleaning base station, which can replenish clean water to cleaning components during the cleaning operation; or it can provide clean water for both cleaning components and replenishing clean water to other containers on the cleaning equipment.

[0082] By placing the wastewater tank 100 on the cleaning equipment and the clean water tank 400 on the cleaning base station, only the wastewater tank 100 moves with the cleaning equipment while the clean water tank 400 is fixed to the base station during cleaning operations. This significantly reduces the weight of the cleaning equipment, lowers the load on the drive motor, and extends the battery life of the cleaning equipment.

[0083] The following embodiments describe the structure of the sewage tank 100 involved in the above embodiments.

[0084] Please see Figures 1 to 3 In 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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 self-cleaning drainage device, characterized in that, include: A wastewater tank (100) includes a clean water inlet (112) and a self-cleaning mechanism (140). The self-cleaning mechanism (140) introduces clean water from the clean water inlet (112) to flush the inner wall of the wastewater tank (100). A clean water tank (400) is used to hold clean water, and the clean water tank (400) is provided with an overflow port (410); A suction device (500) is used to draw clean water into the clean water tank (400); The clean water inlet (112) is connected to the overflow outlet (410) so that the clean water flowing out of the overflow outlet (410) can be guided to the self-cleaning mechanism (140) under the action of gravity.

2. The self-cleaning drainage device according to claim 1, characterized in that, The clean water tank (400) includes a mounting cavity (440), and the wastewater tank (100) is fitted into the mounting cavity (440).

3. The self-cleaning drainage device according to claim 2, characterized in that, At least a portion of the clear water chamber (420) in the clear water tank (400) is located above the sewage tank (100), and the overflow port (410) is positioned corresponding to the highest liquid level of the clear water chamber (420) above the sewage tank (100).

4. The self-cleaning drainage device according to claim 1, characterized in that, A one-way valve (430) is provided between the overflow port (410) and the clean water inlet (112), and the one-way valve (430) is configured to open in the direction from the overflow port (410) to the clean water inlet (112).

5. The self-cleaning drainage device according to any one of claims 1 to 4, characterized in that, Both the wastewater tank (100) and the clean water tank (400) are installed in the cleaning equipment.

6. The self-cleaning drainage device according to any one of claims 1 to 4, characterized in that, The suction device (500) is disposed on the cleaning equipment; or, the suction device (500) is disposed on the cleaning base station.

7. The self-cleaning drainage device according to claim 1, characterized in that, The wastewater tank (100) is installed on the cleaning equipment, and the clean water tank (400) is installed on the cleaning base station. In response to the cleaning equipment docking at the cleaning base station, the overflow port (410) is connected to the clean water inlet (112).

8. The self-cleaning drainage device according to claim 1, characterized in that, Both the wastewater tank (100) and the clean water tank (400) are located at the clean water base station.

9. A cleaning device, characterized in that, The self-cleaning drainage device includes any one of claims 1 to 6.

10. A cleaning system, characterized in that, The self-cleaning drainage device includes any one of claims 1 to 8.

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