Water tank, mobile robot and intelligent robot system

Abstract

The invention relates to the technical field of water treatment devices, and discloses a water tank, a mobile robot and an intelligent robot system. The stirring part comprises a rotating main body which is rotationally arranged in the sewage cavity along the vertical axis; the fan blades are arranged on the rotating body and distributed in the circumferential direction of the rotating body, each fan blade is obliquely arranged, an overflowing channel is formed between every two adjacent fan blades, and the fan blades are used for driving liquid entering the overflowing channels to flow from top to bottom when rotating along with the rotating body. In this way, self-cleaning of the water tank can be achieved, and meanwhile the cleaning effect is improved.

Description

Technical Field

[0001] This application relates to the field of water treatment device technology, specifically to a water tank, a mobile robot, and an intelligent robot system. Background Technology

[0002] Taking a mobile robot equipped with a cleaning mechanism as an example, the robot will clean the ground through its cleaning mechanism during movement. In order to ensure the cleaning effect after long-term work, the robot can be equipped with a sewage collection function, specifically by collecting the sewage generated during its work through a water tank on the robot body.

[0003] After a certain period of use, users need to clean the water tank themselves, which undoubtedly causes inconvenience and does not truly free up users' hands during the cleaning process. Summary of the Invention

[0004] In view of the above problems, this application provides a water tank, a mobile robot, and an intelligent robot system that can achieve self-cleaning of the water tank and improve the cleaning effect.

[0005] According to one aspect of the embodiments of this application, a water tank is provided, comprising: a tank body, wherein a sewage chamber is disposed within the tank body; and a stirring component, comprising: a rotating body, which is rotatably disposed within the sewage chamber along a vertical axis; and a fan blade, which is disposed on the rotating body and has multiple blades, wherein the multiple fan blades are arranged circumferentially along the rotating body, each fan blade is inclined, and a flow channel is formed between adjacent fan blades, wherein the fan blades are used to drive the liquid entering the flow channel to flow from top to bottom when rotating with the rotating body.

[0006] In one alternative approach, the downward-facing side of each fan blade is a concave arc surface.

[0007] In one alternative approach, the horizontal spacing between two adjacent fan blades is L1 at the top, L2 at the bottom, and L3 at the middle height position; L3>L1, L3>L2; and / or, L1>L2.

[0008] In one alternative approach, the fan blades are positioned at the midpoint of the sewage chamber along its length and / or width.

[0009] In one alternative embodiment, the tank body has an installation port at a position corresponding to the sewage chamber; the tank also includes a drive component and a sealing assembly; one end of the drive component in the vertical direction has an output shaft, a rotating body is fixed on the output shaft, and the rotating body extends into the sewage chamber through the installation port; the sealing assembly includes: a sealing cover, which wraps around the end of the drive component where the output shaft is located, and the sealing cover has a through hole for the output shaft to pass through; a first mounting shell, which is fastened to the drive component from the end where the output shaft is located, so that the sealing cover is clamped between the first mounting shell and the drive component to form an interference fit, the first mounting shell is at least partially accommodated in the installation port, and a sealing ring is sleeved on the outer periphery of the first mounting shell, the sealing ring is clamped between the inner wall of the first mounting shell and the installation port to form an interference fit.

[0010] In one alternative embodiment, the sealing assembly further includes a second mounting housing that is snapped onto the drive unit from the opposite end of the output shaft and is engaged with the first mounting housing.

[0011] In one alternative configuration, the mounting port is located at the top of the sewage chamber, and the rotating body extends downwards into the sewage chamber.

[0012] In one alternative approach, the vertical distance between the top of the fan blade and the inner wall of the sewage chamber is greater than the vertical distance between the bottom of the fan blade and the inner wall of the sewage chamber.

[0013] In one alternative configuration, the tank body is provided with an inlet that communicates with the sewage chamber, and the inlet is positioned offset from the agitator.

[0014] In one alternative configuration, the housing is also provided with an air extraction port that communicates with the sewage chamber, with the air extraction port and the sewage inlet located on opposite sides of the sewage chamber.

[0015] In one alternative embodiment, the tank also includes a clear water chamber separated from the sewage chamber. The tank has an overflow port connected to the clear water chamber and an inlet port connected to the sewage chamber. The overflow port and the inlet port are connected outside the tank via an overflow pipe. Water overflowing from the clear water chamber enters the sewage chamber sequentially through the overflow port, the overflow pipe, and the inlet port.

[0016] In one alternative approach, a float is provided in the sewage chamber, and at least part of the water entering from the inlet flows to the float.

[0017] In one alternative embodiment, a partition is provided in the middle of the interior of the tank, which divides the space on both sides of the tank into a sewage chamber and a clean water chamber; a water inlet is provided in the middle of one side of the tank, and a water inlet channel connecting the water inlet and the clean water chamber is provided on the partition.

[0018] According to another aspect of the embodiments of this application, a mobile robot is provided, including a robot body and a water tank as described above, the water tank being disposed on the robot body, and a sewage chamber for collecting sewage generated by the robot body.

[0019] According to another aspect of the embodiments of this application, an intelligent robot system is provided, including a base station and the aforementioned mobile robot. The mobile robot is used to move and dock with the base station to control the stirring component to work, so as to stir the sewage in the sewage chamber.

[0020] The water tank provided in this embodiment features a stirring element rotating along a vertical axis within its wastewater chamber. This stirring element agitates the wastewater, causing impurities to float and preventing excessive sedimentation at the bottom of the chamber, thus achieving self-cleaning. Furthermore, multiple inclined blades are circumferentially arranged on the rotating body of the stirring element. Wastewater entering the flow channel between adjacent blades is forced downwards by the force of the blades, impacting the bottom wall of the wastewater chamber. This further washes away the mud and grime adhering to the bottom wall, enhancing the self-cleaning effect of the wastewater chamber. Users no longer need to frequently clean the water tank, truly freeing their hands and improving the user experience.

[0021] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the internal structure of the water tank provided in an embodiment of this application; Figure 2 A three-dimensional structural diagram of the stirring component in the water tank provided in an embodiment of this application; Figure 3 This is a side view of the agitator in the water tank provided in an embodiment of this application. Figure 4 A three-dimensional structural diagram of the water tank from the rear view, provided in an embodiment of this application; Figure 5 A cross-sectional structural diagram of the water tank provided in an embodiment of this application; Figure 6 and Figure 7Exploded structural diagrams of the stirring component, driving component, and sealing assembly in the water tank provided in the embodiments of this application, viewed from a stereoscopic perspective and a side perspective. Figure 8 for Figure 5 A magnified structural diagram at point A; Figure 9 A schematic diagram of the front structure of the water tank provided in an embodiment of this application; Figure 10 A cross-sectional structural diagram of the water tank provided in an embodiment of this application; Figure 11 A top view of the water tank provided in an embodiment of this application; Figure 12 A schematic diagram of a filter screen installed at the water inlet of a water tank according to an embodiment of this application; Figure 13 A schematic diagram of the bottom structure of the mobile robot provided in an embodiment of this application; Figure 14 This is a schematic diagram of the disassembled structure of the mobile robot provided in the embodiments of this application.

[0023] The reference numerals in the detailed embodiments are as follows: 100. Water tank; 110. Housing; 111. Sewage chamber; 112. Installation port; 113. Limiting wall; 1131. Narrowing section; 114. Positioning post; 115. Sewage inlet; 116. Air extraction port; 117. Clean water chamber; 1171. Water inlet; 1181. Overflow port; 1182. Water inlet; 1183. Overflow pipe; 1184. Filter screen; 119. Partition; 1191. Water injection channel; 1191a. Horizontal section; 1191b. Longitudinal section; 1192. Protrusion; 1193. Guide post; 1101. Water inlet; 1102. Water extraction port; 120. Agitator; 121. Rotating body; 122. Fan blades; 123. Flow channel; 130. Drive component; 131. Output shaft; 140. Sealing assembly; 141. Sealing cover; 1411. Through hole; 1412. Annular protrusion; 1413. Slot; 142. First mounting shell; 1421. First connecting part; 1422. Snap protrusion; 1423. Insertion part; 1424. Limiting groove; 1425. Protrusion; 1426. Positioning hole; 143. Sealing ring; 144. Second mounting shell; 1441. Second connecting part; 150. Float; 151. Hall element; 160. Check valve; 161. Valve body; 162. Seal; 163. Elastic element; 500, Mobile robot; 200, Robot body; 300, Drive pump; 310, First pipe; 320, Second pipe; 400, Cleaning assembly; 410, Water inlet. Detailed Implementation

[0024] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0026] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0029] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0030] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0032] The wastewater collected by the mobile robot's water tank contains food scraps, mud, and other particulate impurities. These impurities will settle and adhere to the inner wall of the water tank under gravity. If they are not cleaned for a long time, they will cause the water tank to produce an odor and may even clog the pipes in severe cases.

[0033] To achieve self-cleaning of the water tank and free up the user's hands, this application proposes incorporating a rotating agitator within the tank. This agitation stirs the wastewater, causing more impurities to float to the surface and preventing them from settling at the bottom. Simultaneously, the shape of the agitator blades has been designed to impact the bottom wall with the agitated wastewater, effectively flushing away any sediment or sludge that has settled and adhered to the bottom.

[0034] Understandably, this self-cleaning method is not limited to cleaning water tanks on mobile robots; it can also be applied to water tanks used in industrial wastewater treatment or other fields where particulate matter needs to be deposited and self-cleaning is required.

[0035] Based on the above concept, according to one aspect of the embodiments of this application, a water tank is provided, for details please refer to... Figure 1 The figure shows the internal structure of the water tank. As shown, the water tank 100 includes a tank body 110 and a stirring component 120. A sewage chamber 111 is provided inside the tank body 110 for collecting sewage.

[0036] Please combine further Figure 2The figure shows the three-dimensional structure of the agitator 120, which includes a rotating body 121 and blades 122. The rotating body 121 is rotatably disposed within the sewage chamber 111 along a vertical axis. The blades 122 are disposed on the rotating body 121 and have multiple blades arranged circumferentially along the rotating body 121. Each blade 122 is inclined, and a flow channel 123 is formed between adjacent blades 122. The blades 122 are used to drive the liquid entering the flow channel 123 to flow downward when rotating with the rotating body 121.

[0037] Specifically, the fan blade 122 and the rotating body 121 can be integrally formed, or they can be processed separately and assembled and fixed together by riveting, snap-fitting, gluing or other methods. No specific limitation is made here.

[0038] The rotation direction of the stirring component 120 is as follows Figure 2 As shown by the top arrow in the diagram, each fan blade 122 is tilted from low to high along the direction of rotation. This causes the top of the fan blade 122 to exert a downward force on the sewage entering the flow channel 123 when the fan blade 122 rotates, so that the sewage impacts the inner wall of the bottom of the tank 110.

[0039] The water tank 100 provided in this embodiment of the application has a stirring element 120 rotating along a vertical axis in its sewage chamber 111. The stirring element 120 agitates the sewage, causing impurities to float and preventing excessive sedimentation at the bottom of the sewage chamber 111, thus achieving self-cleaning of the sewage chamber 111. Furthermore, multiple inclined blades 122 are arranged circumferentially on the rotating body 121 of the stirring element 120. Sewage entering the flow channel 123 between adjacent blades 122 is impacted downwards by the force on the surface of the blades 122, causing more mud and dirt adhering to the bottom wall to be washed away. This improves the self-cleaning effect of the sewage chamber 111, eliminating the need for frequent cleaning of the water tank 100 and truly freeing up the user's hands, thus enhancing the user experience.

[0040] To further improve cleaning effectiveness, such as Figure 3 As shown in the side structure of the agitator 120, the downward-facing side of each blade 122 is a concave arc surface. With this configuration, when the agitator 120 rotates in the direction indicated by the top arrow, the movement of sewage in the flow channel 123 is roughly as shown by the dotted arrow in the figure. The inclined blades 122 will exert an inclined downward force on the sewage. Furthermore, since the water-facing surface of the blades 122 is a concave arc surface, its changing curvature allows the top position of the water-facing surface to exert a more downward force on the sewage. The sewage at the top has greater gravitational potential energy and can flush the bottom wall of the sewage chamber 111 with a greater impact force, thereby washing away the more firmly attached mud and dirt, and improving the cleaning effect of the sewage chamber 111.

[0041] like Figure 3 As shown, the horizontal distance between two adjacent fan blades 122 is L1 at the top, L2 at the bottom, and L3 at the middle height. In some embodiments, L3>L1 and L3>L2, thereby narrowing the width of the flow channel 123 from the middle height to the top, reducing the sewage pressure at the top and increasing the flow velocity. Under the force of the water-facing surface of the fan blades 122, the sewage impacts the bottom wall of the sewage chamber 111 at a higher speed, further increasing the impact force and improving the cleaning effect.

[0042] It can also be further set to L1>L2, so that the top width of the flow channel 123 is narrower, the sewage velocity at the top is increased, and the impact force on the bottom wall of the sewage chamber 111 is greater, resulting in a better cleaning effect.

[0043] like Figure 1 As shown, the fan blade 122 can be disposed in the sewage chamber 111 along the length direction ( Figure 1 The fan blade 122 is positioned in the middle of the left-right direction (from a visual perspective) to uniformly agitate the sewage along its length. Alternatively, the fan blade 122 can also be positioned along the width direction of the sewage chamber 111. Figure 1 The wastewater is positioned at the center (perpendicular to the plane of the paper) to uniformly agitate it in the width direction. This uniform agitation allows particulate impurities to float more freely and prevent sedimentation, ensuring a cleanliness of the wastewater chamber 111.

[0044] During installation, the agitator 120 needs to be mounted onto a drive unit (such as a motor) to rotate under its drive. The circuitry of the drive unit needs to be waterproof, while the sewage chamber 111 needs to be sealed. This undoubtedly places high demands on the assembly of the agitator 120 and the drive unit onto the housing 110. At the same time, the limited internal space of the sewage chamber 111 also causes inconvenience in installation operations.

[0045] Taking the above factors into consideration, a scheme for external installation of the agitator 120 is proposed. According to another aspect of the embodiments of this application, a water tank is provided; please refer to [link / reference needed]. Figure 4 and Figure 5 ,in Figure 4 The three-dimensional structure of the water tank is shown. Figure 5 A cross-sectional structure of the water tank is shown. As shown in the figure, the water tank 100 includes a tank body 110, an agitator 120, a drive unit 130, and a sealing assembly 140.

[0046] A sewage chamber 111 is provided inside the housing 110. An installation port 112 is provided in the housing 110 at a position corresponding to the sewage chamber 111. A drive component 130 is at least partially housed in the installation port. One end of the drive component 130 in the vertical direction has an output shaft 131, and at least a portion of the output shaft 131 extends into the sewage chamber 111 through the installation port 112. A sealing assembly 140 is clamped between the inner wall of the installation port 112 and the drive component 130 to seal the assembly gap between the drive component 130 and the inner wall of the installation port 112, ensuring the airtightness of the sewage chamber 111. A stirring component 120 is disposed within the sewage chamber 111 and fixedly connected to the output shaft 131.

[0047] During assembly, the agitator 120 is first assembled and fixed to the output shaft 131, and the sealing assembly 140 is assembled and fixed to the drive component 130, forming an independent mounting module. Then, this mounting module is inserted into the mounting port 112 with the agitator 120 facing inwards, thus completing the assembly of the mounting module on the housing 110. The entire process is simple and efficient. After the mounting module is inserted, the agitator 120 extends into the sewage chamber 111, the drive component 130 is at least partially housed in the mounting port 112, and the sealing assembly 140 is sealed and clamped between the inner wall of the mounting port 112 and the drive component 130, thereby ensuring the airtightness of the internal space of the sewage chamber 111 and preventing sewage leakage.

[0048] To ensure the airtightness of the sewage chamber 111 while improving the water resistance of the drive component 130, this application further proposes an implementation method, which can be found in the following description. Figure 5 and further combine Figure 6 and Figure 7 ,in Figure 6 and Figure 7 The exploded structures of the stirring component 120, the driving component 130, and the sealing assembly 140 are shown from a stereoscopic view and a side view, respectively. As shown in the figure, the sealing assembly 140 includes a sealing cover 141 and a first mounting shell 142.

[0049] A sealing cover 141 is wrapped around the end of the drive member 130 where the output shaft 131 is located, and a through hole 1411 is provided on the sealing cover 141 for the output shaft 131 to pass through. The first mounting shell 142 is fastened to the drive member 130 from the end where the output shaft 131 is located, so that the sealing cover 141 is clamped between the first mounting shell 142 and the drive member 130 and forms an interference fit. The sealing cover 141, which is sealed and sleeved on the output shaft 131 through the through hole 1411 and clamped between the drive member 130 and the first mounting shell 142 in an interference fit, can provide comprehensive sealing protection for the end of the drive member 130 where the output shaft 131 is located, so as to prevent sewage in the sewage chamber 111 from directly contacting the drive member 130 and affecting it, and provide a good water-proof environment for the drive member 130.

[0050] Specifically, the sealing cover 141 is made of flexible materials such as soft rubber, while the first mounting shell 142 is made of metal or hard plastic. After the first mounting shell 142 is fastened to the drive component 130 and the sealing cover 141 is clamped between it and the drive component 130, the sealing performance between the first mounting shell 142 and the drive component 130 is ensured by the compression deformation of the sealing cover 141. At the same time, the rigidity of the first mounting shell 142 can ensure the strength and stability of the drive component 130 after assembly, and prevent the drive component 130 from shifting or loosening due to vibration during operation.

[0051] The first mounting housing 142 is at least partially housed within the mounting opening 112. A sealing ring 143 is fitted around the outer periphery of the first mounting housing 142, and the sealing ring 143 is clamped between the first mounting housing 142 and the inner wall of the mounting opening 112, forming an interference fit. The sealing ring 143, clamped between the first mounting housing 142 and the inner wall of the mounting opening 112 in an interference fit manner, can effectively ensure the sealing of the assembly gap between the first mounting housing 142 and the mounting opening 112, preventing sewage from leaking out from there.

[0052] As can be seen from the accompanying drawings of this application, the above-described scheme of arranging the agitator 120 with inclined fan blades 122 in the water tank 100 and the assembly scheme of using an externally inserted drive component 130 can be used simultaneously in the same embodiment. Accordingly, the rotating body 121 of the agitator 120 is fixedly mounted on the output shaft 131 and extends into the sewage chamber 111 through the mounting port 112. The further embodiments provided below are similar, and will not be described in detail hereafter.

[0053] To prevent the drive component 130 from shifting relative to the first mounting housing 142 due to vibration, such as Figures 5 to 7As shown, the sealing assembly 140 may further include a second mounting housing 144, which is snapped onto the drive member 130 from the other end opposite to the output shaft 131 and is engaged with the first mounting housing 142.

[0054] Specifically, such as Figure 6 As shown, first connecting portions 1421 can extend from opposite sides of the first mounting shell 142, and second connecting portions 1441 can extend from opposite sides of the second mounting shell 144. After the first mounting shell 142 and the second mounting shell 144 are engaged, the first connecting portions 1421 and the second connecting portions 1441 are fitted together. A locking member passes through the connecting holes of the second connecting portion 1441 and the first connecting portion 1421 to fix them together. Of course, as... Figure 7 As shown, in some other embodiments, the first connecting part 1421 and the second connecting part 1441 can also be snapped together and fixed.

[0055] By setting a second mounting shell 144 that is fastened to the other end of the drive component 130, and fastening the second mounting shell 144 to the first mounting shell 142, not only can the drive component 130 be fully covered and protected, but the relative displacement between the drive component 130 and the first mounting shell 142 can also be effectively prevented, thus ensuring the stability and reliability of the drive component 130.

[0056] Considering that if the agitator 120 is assembled in a bottom-up manner, the installation port 112 needs to be opened on the bottom wall of the housing 110. The installation port 112 needs to be constantly subjected to the invasion and penetration of sewage, which undoubtedly places extremely high demands on the sealing ability of this location. Once the seal fails, it will cause serious sewage leakage problems.

[0057] In this regard, such as Figure 5 As shown, in some embodiments, the mounting port 112 is located at the top of the sewage chamber 111, and the agitator 120 extends downward into the sewage chamber 111. Figure 2 In the embodiment, the stirring member 120 is equivalent to the rotating body 121 extending downward into the sewage chamber 111.

[0058] The arrangement of the agitator 120 extending from top to bottom into the sewage chamber 111 means that when there is little sewage in the sewage chamber 111, the installation port 112 only needs to isolate the sewage splashed up by the agitator 120, which greatly alleviates the sewage load on the sealing component 140 and helps to extend the service life of the sealing component 140.

[0059] In addition, for Figure 2In the embodiment shown, the stirring member 120 is arranged so that the rotating body 121 extends from top to bottom into the sewage chamber 111. Compared with the bottom-up extension method, this can ensure the integrity of the bottom wall of the sewage chamber 111, so that the sewage can be thoroughly rinsed and cleaned by the fan blades 122, and there are basically no dead corners in the cleaning.

[0060] like Figure 5 As shown, in some embodiments, the vertical distance H1 between the top of the fan blade 122 and the inner wall of the sewage chamber 111 is greater than the vertical distance H2 between the bottom of the fan blade 122 and the sewage chamber 111. This arrangement allows the fan blade 122 to be closer to the bottom wall of the sewage chamber 111, thereby driving the sewage to impact the bottom wall more effectively and improving the cleaning effect on the bottom wall.

[0061] To improve the sealing protection capability of the sealing cover 141 for the drive component 130, please refer to [link / reference needed]. Figure 7 and further combine Figure 8 shown Figure 5 In the enlarged structure at point A, an annular protrusion 1412 can be provided on the sealing cover 141. The annular protrusion 1412 is configured to undergo compressive deformation under pressure to form an interference fit.

[0062] Specifically, the annular protrusion 1412 may be provided at least one of the following locations: the portion of the sealing cover 141 covering the end face of the drive member 130, the portion covering the outer peripheral side of the drive member 130, and the inner wall of the through hole 1411.

[0063] from Figure 8 As can be seen, the annular protrusion 1412 overlaps with the first mounting shell 142 and the output shaft 131. These overlapping parts will be compressed and deformed during actual assembly, thus forming an interference fit and improving sealing performance. To better ensure sealing performance, the annular protrusion 1412 can be set in multiple places with multiple rings to form multiple waterproof barriers.

[0064] By providing an annular protrusion 1412 on the sealing cover 141 and using the deformation of the annular protrusion 1412 to form an interference fit, compared with forming an interference fit by squeezing the entire surface of the sealing cover 141, a smaller contact area can be used to reduce the resistance during the process of the first mounting shell 142 being fitted onto the sealing cover 141, thus ensuring ease of assembly.

[0065] Considering that the drive component 130 and the first mounting housing 142 are not rigidly connected and fixed, but only mutually fixed by the sealing cover 141 clamped between them, if the drive component 130 rotates during operation due to the rotation of the output shaft 131, causing the sealing cover 141 to rotate circumferentially relative to the first mounting housing 142, it will accelerate the wear of the sealing cover 141, thus affecting its service life. Therefore, if... Figure 8 As shown, the sealing cover 141 and the first mounting shell 142 can be interlocked and fixed together in the circumferential direction to prevent the sealing cover 141 from rotating at the through hole 1411 due to the friction of the output shaft 131.

[0066] Specifically, such as Figure 8 As shown, a snap protrusion 1422 may be provided on the first mounting shell 142, and a snap groove 1413 may be provided on the sealing cover 141. The snap protrusion 1422 is snapped into the snap groove 1413 so that the first mounting shell 142 and the sealing cover 141 are snapped and fixed together in the circumferential direction.

[0067] Please continue reading. Figure 8 In some embodiments, the outer periphery of the mounting port 112 extends into the sewage chamber 111 to form a limiting wall 113. One end of the limiting wall 113 facing the interior of the sewage chamber 111 has a constricted portion 1131 with a reduced radial dimension. The one end of the first mounting shell 142 facing the interior of the sewage chamber 111 has a insertion portion 1423 with a reduced radial dimension. A sealing ring 143 is fitted around the outer periphery of the insertion portion 1423. The insertion portion 1423 is inserted into the constricted portion 1131 and abuts against the inner wall of the constricted portion 1131. By limiting the abutment of the insertion portion 1423 by the constricted portion 1131, the maximum insertion depth of the first mounting shell 142 can be limited. Therefore, during assembly, when the mounting module consisting of the stirring member 120, the driving member 130, and the sealing assembly 140 is inserted to a position where it cannot move further inward, it indicates that the insertion is complete.

[0068] The sealing ring 143 is clamped between the insertion portion 1423 and the constricted portion 1131, forming an interference fit. Similarly, Figure 8The portion of the sealing ring 143 that overlaps with the insertion portion 1423 and the constricted portion 1131 represents the portion that undergoes compression deformation during actual assembly. Since the constricted portion 1131 is located at the inward-facing end of the limiting wall 113, the sealing ring 143 is essentially not compressed by the inner surface of the limiting wall 113 during insertion from the mounting port 112 before reaching the constricted portion 1131, thus ensuring smooth insertion. The radial dimension of the constricted portion 1131 can gradually transition in the form of a slope or arc. When the sealing ring 143 reaches the position contacting the inner wall of the constricted portion 1131, the gradually decreasing mirror image size of the constricted portion 1131 allows the compression degree of the sealing ring 143 to increase slowly, avoiding sudden changes in force that could lead to insertion obstruction or displacement of the sealing ring 143.

[0069] To better ensure the accuracy of the sealing ring 143's position and prevent it from shifting under force during insertion, such as... Figure 7 and Figure 8 As shown, a limiting groove 1424 is formed on the outer periphery of the insertion part 1423. The sealing ring 143 is sleeved in the limiting groove 1424 and partially protrudes from the opening of the limiting groove 1424. The part of the sealing ring 143 protruding from the opening of the limiting groove 1424 is used to abut against the inner wall of the constricted part 1131 and be deformed under pressure when inserted. During the process of deformation under pressure, the limiting groove 1424 restricts the sealing ring 143, which can prevent it from being displaced along the axial direction of the insertion part 1423, ensuring that the sealing ring 143 is reliably clamped between the insertion part 1423 and the constricted part 1131, thereby ensuring the sealing performance at this point.

[0070] To prevent the installation module, consisting of the stirring element 120, the driving element 130, and the sealing assembly 140, from rotating entirely within the installation port 112 during operation due to vibration from the driving element 130, as follows: Figure 5 and Figure 6 As shown, a positioning post 114 can be installed in the mounting port 112. A protrusion 1425 is provided on one side of the first mounting shell 142. A positioning hole 1426 is provided on the protrusion 1425. The positioning hole 1426 is sleeved and fixed on the positioning post 114 so that the entire mounting module composed of the stirring component 120, the driving component 130 and the sealing component 140 is fixed circumferentially relative to the box body 110.

[0071] The above is an introduction to the relevant embodiments of the external drive component 130 solution. Now, let's return to the housing 110.

[0072] In some embodiments, please combine Figure 1 and further with Figure 4The housing 110 has an inlet 115 that communicates with the sewage chamber 111. The inlet 115 is offset from the agitator 120 to prevent sewage entering from the inlet 115 from directly spraying into the agitator 120 and causing the agitator 120 to jam or other malfunctions.

[0073] Specifically, sewage inlet 115 can be as follows: Figure 1 The agitator 120 is positioned above one side of the agitator, but it can also be positioned in other locations, as long as the wastewater entering from the inlet 115 is not sprayed directly onto the agitator 120.

[0074] Please combine again Figure 1 and Figure 6 The housing 110 can also have an exhaust port 116 connected to the sewage chamber 111. The exhaust port 116 is used to extract the gas from the sewage chamber 111, creating a negative pressure inside the sewage chamber 111. Under the action of atmospheric pressure drop, sewage from the sewage source connected to the inlet 115 enters the sewage chamber 111 through the inlet 115, thus collecting the sewage. The exhaust port 116 and the inlet 115 are distributed on opposite sides of the sewage chamber 111 to prevent sewage entering the sewage chamber 111 from being discharged through the exhaust port 116 and affecting the pipeline at the exhaust port 116.

[0075] like Figure 1 As shown in some embodiments, the housing 110 further includes a clean water chamber 117, which is separated from the sewage chamber 111. Specifically, the clean water chamber 117 and the sewage chamber 111 can be separated as follows: Figure 1 The figures shown are two separate spaces within the same housing 110. In other embodiments, the housing 110 may include two or more independent solid parts, one of which forms a sewage chamber 111 and the other forms a clean water chamber 117.

[0076] The housing 110 is provided with an overflow outlet 1181 communicating with the clean water chamber 117 and an inlet 1182 communicating with the sewage chamber 111, such as... Figure 4 As shown, the overflow outlet 1181 and the inlet 1182 are connected outside the tank via an overflow pipe 1183.

[0077] When clean water is injected into the clean water chamber 117, the overflowing clean water can enter the sewage chamber 111 in sequence through the overflow port 1181, the overflow pipe 1183 and the inlet 1182. This not only prevents the clean water from leaking out, but also cleans the sewage chamber 111.

[0078] Furthermore, after the overflow outlet 1181 and the inlet 1182 are connected to each other through the overflow pipe 1183, since the clear water chamber 117 can overflow, there is no need to install water full detection components in the clear water chamber 117, thereby reducing production costs.

[0079] Furthermore, such as Figure 1 As shown, a float 150 can be installed in the sewage chamber 111 to detect the water level in the sewage chamber 111. At least a portion of the clean water entering from the inlet 1182 flows to the float 150.

[0080] Specifically, the float 150 can be positioned directly below the inlet 1182 so that the clean water overflowing from the clean water chamber 117 enters the sewage chamber 111 through the inlet 1182, flows downward and washes the float 150, thereby achieving a self-cleaning effect on the float 150.

[0081] exist Figure 1 In the specific embodiment shown, the water inlet 1182 is opened on the side wall of the housing 110, and the float 150 is located below the water inlet 1182 and biased to one side. The clean water entering through the water inlet 1182 flows in a parabolic trajectory and at least part of it flows to the float 150 to rinse and clean it.

[0082] In addition, in some other embodiments, the water inlet 1182 may also be opened on the side wall of the housing 110 and positioned toward the float 150. Pressurized clean water entering from the water inlet 1182 is sprayed toward the float 150 in a diffused manner to rinse the float 150.

[0083] To minimize the overall volume of the water tank 100, this application further proposes an implementation method, which can be found again in detail. Figure 1 As shown in the figure, a partition 119 is provided in the middle of the interior of the box 110, which divides the space on both sides of the interior of the box 110 into a sewage chamber 111 and a clean water chamber 117.

[0084] The integrated housing 110 reduces the volume of the water tank 100 and facilitates its assembly on the robot body. The partition 119 in the middle divides the integrated housing 110 into a sewage chamber 111 and a clean water chamber 117 with essentially the same volume, enabling centralized collection and treatment of sewage and clean water within the same housing 110. Furthermore, for designs where the overflow outlet 1181 and the inlet 1182 are connected externally to the housing via an overflow pipe 1183, the integrated housing 110 shortens the length of the overflow pipe 1183, improving structural compactness.

[0085] Please see Figure 9 , Figure 9The front structure of the water tank is shown. When the water tank 100 is mounted on the robot body of the mobile robot, it is convenient for the robot to dock with the base station for water filling. In some embodiments, a water inlet 1101 is provided in the middle of one side of the tank body 110, and a water filling channel 1191 is provided on the partition 119 to connect the water inlet 1101 and the clear water chamber 117.

[0086] The water inlet 1101 located in the middle of one side of the housing 110 can face the water injection mechanism on the base station as the robot moves forward with this side as the front, thus ensuring effective docking between the two. Water injection is achieved smoothly by integrating the water injection channel 1191 on the partition 119.

[0087] According to another aspect of the embodiments of this application, a water tank is also provided; please refer to further details. Figure 1 and Figure 9 The water tank 100 includes a tank body 110. An internal partition 119 divides the space on both sides of the tank body 110 into a wastewater chamber 111 and a clean water chamber 117. An inlet 1101 is provided on the outer wall of the tank body 110 opposite to the partition 119, and a water inlet 1171 is provided on the inner wall of the clean water chamber 117. A water inlet channel 1191 is provided on the partition 119, connecting the inlet 1101 and the water inlet 1171. The inlet 1101 is used to connect to an external water source device to add water to the clean water chamber 117 through the water inlet channel 1191 and the water inlet 1171.

[0088] When the water tank 100 is mounted on the robot body of the mobile robot, the external water source device can be a base station that interfaces with the mobile robot. Of course, when the water tank 100 is applied to other fields such as industrial water treatment, the external water source can also be a tap water pipeline, etc., and there is no specific limitation here.

[0089] In the water tank 100 provided in this embodiment, the integral tank 110 is divided into a sewage chamber 111 and a clean water chamber 117 by a partition 119, realizing integrated storage of different types of water (sewage and clean water). This helps to reduce the volume of the water tank 100 and improve its integration level. Furthermore, when mounted on a mobile robot or other equipment, it simplifies the piping layout between the water tank 100 and corresponding components on the robot body or other equipment, improving the assembly efficiency of the water tank 100 on the robot body. The water inlet 1191, connecting the water inlet 1101 and the water outlet 1171, is located on the partition 119, eliminating the need for additional space to accommodate the water inlet 1191, thus better meeting the miniaturization requirements of the product.

[0090] It should be noted that the water tank 100 provided in this embodiment is also applicable to the water tank solution provided in any of the above embodiments, as can be seen intuitively from the accompanying drawings of this application. The same applies below, so it will not be described in detail again.

[0091] like Figure 1 As shown, the water inlet 1171 can be located at the top of the clear water chamber 117, the water inlet 1101 is lower than the water inlet 1171, and the water inlet channel 1191 includes a transverse section 1191a and a longitudinal section 1191b that are interconnected.

[0092] The lower water inlet 1101 facilitates connection with external water source equipment for water injection, while the higher water inlet 1171 prevents backflow of clean water from the clean water chamber 117. The lower water inlet 1101 and the higher water inlet 1171 are connected through the transverse section 1191a and the longitudinal section 1191b of the water injection channel 1191, allowing clean water from the external water source equipment to be smoothly injected into the clean water chamber 117.

[0093] Specifically, the water injection channel 1191 extends from one end connected to the water injection port 1101 to the other end connected to the water inlet 1171, and can be configured as follows: Figure 1 As shown, the horizontal extension first forms the horizontal segment 1191a, and then the vertical extension forms the vertical segment 1191b. Alternatively, the vertical extension can be formed first to create the vertical segment 1191b, and then the horizontal extension can be formed to create the horizontal segment 1191a.

[0094] Furthermore, the extension length of the longitudinal section 1191b can be greater than the extension length of the transverse section 1191a, so that a larger height difference is formed between the water inlet 1101 and the water filling inlet 1171, so that the water filling inlet 1171 can be located on the top side of the clear water chamber 117, ensuring that before the clear water chamber 117 is filled with clear water, the clear water will basically not flow back into the water filling channel 1191 from the water filling inlet 1171.

[0095] To prevent clean water from backflowing into the water injection channel 1191 and leaking from the water injection port 1101, please refer to the following: Figure 1 and further combine Figure 10 The cross-sectional structure of the water tank 100 shown has a protrusion 1192 at the bottom of the partition 119 facing the sewage chamber 111, and a water inlet 1101 is disposed opposite to the protrusion 1192. At least a portion of the water inlet channel 1191 is formed inside the protrusion 1192, and a one-way valve 160 for controlling the opening and closing of the water inlet channel 1191 is provided inside the protrusion 1192.

[0096] The partition 119 increases its volume by forming a protrusion 1192 on the side facing the sewage chamber 111, so that the one-way valve 160 can be accommodated and installed inside.

[0097] Specifically, such as Figure 10 As shown, the inner wall of the water injection channel 1191 is provided with a guide post 1193, and the one-way valve 160 includes a valve body 161, a sealing element 162, and an elastic element 163. The valve body 161 is positioned along the front-to-back direction (…). Figure 10 (From a left-right perspective) The valve body 161 is slidably fitted onto the guide post 1193, the sealing element 162 is fitted onto the outer periphery of the valve body 161, and the elastic element 163 abuts against the inner wall of the valve body 161 and the water injection channel 1191, providing an outward sliding elastic force to the valve body 161. Figure 10 In the indicated state, the valve body 161 is sealed to the right by the elastic force of the elastic element 163, which seals the water inlet 1101. The elastic element 163 abuts against the inner wall of the water inlet 1101 where the water inlet channel 1191 connects to the water inlet 1101, thus completely sealing the water inlet 1101. Water flowing back into the check valve 160 exerts an outward force on the valve body 161. Figure 10 (From the perspective of looking to the right), the outward force will make the valve body 161 and the seal 162 seal the water inlet 1101 more tightly, thereby ensuring the sealing of the water inlet 1101.

[0098] Taking the water tank 100 mounted on a mobile robot as an example, when water needs to be injected, the mobile robot moves to the base station, the water inlet 1101 connects with the water injection mechanism on the base station, the water injection mechanism pushes the valve body 161 to slide inward, the water injection channel 1191 opens, and the water injection mechanism injects water inward. After water injection is completed, the mobile robot moves away from the base station, and the valve body 161 slides outward and pops out under the action of the elastic element 163, and closes the water injection channel 1191 again.

[0099] Of course, in some other embodiments, the one-way valve 160 may also be an existing check valve or other types of valves, which are not limited here.

[0100] Furthermore, such as Figure 1 As shown, a float 150 can be installed in the space above the protrusion 1192 in the sewage chamber 111 to detect the water level in the sewage chamber 111. Please refer to further details. Figure 11 The top view of the water tank 100 shown indicates that a Hall element 151 can be installed on the back of the tank body 110. The float 150 contains a sensing magnet. When the sewage chamber 111 is full, the float 150 rises to a predetermined position and senses the Hall element 151 to detect the fullness of the sewage chamber 111. When applied to a mobile robot, after the float 150 senses the Hall element 151, it sends a full-water signal to the robot's main unit, prompting the robot to return to the base station for sewage discharge.

[0101] The aforementioned solution of connecting the overflow outlet 1811, which is connected to the clear water chamber 117, and the inlet 1182, which is connected to the sewage chamber 111, via the overflow pipe 1183, to achieve the overflow of the clear water chamber 117 and the cleaning of the sewage chamber 111, is also applicable to the water tank solution of this embodiment. Furthermore, the method of placing the inlet 1182 above the float 150 for rinsing and cleaning the float 150 is also applicable to the water tank solution of this embodiment.

[0102] Considering that the sewage chamber 111 and the clear water chamber 117 are connected by an overflow pipe 1183, if the tank 110 shakes or other situations occur, sewage in the sewage chamber 111 may enter the clear water chamber 117 through the overflow pipe 1183, contaminating the clear water in the clear water chamber 117. Therefore, in order to minimize the impact on the clear water in the clear water chamber 117, such as... Figure 12 As shown in the internal structure of the medium water tank 100, a filter screen 1184 is installed at the water inlet 1182. The filter screen 1184 can block particulate impurities in the sewage chamber 111 from entering the overflow pipe 1183, ensuring that the substance entering the clear water chamber 117 from the sewage chamber 111 is mostly liquid water.

[0103] In some other embodiments, the filter screen 1184 may also be set at the overflow outlet 1181 or in the overflow pipe 1183. In order to enhance the filtration effect, the filter screen 1184 may also be set at multiple locations in the inlet 1182, the overflow outlet 1181 and the overflow pipe 1183.

[0104] The aforementioned improved drive component 130 and agitator 120 are installed by being inserted from the outside to the inside through the mounting port 112 on the housing 110. This method is also applicable to the water tank solution of this embodiment, and as... Figure 11 and Figure 12 As shown, with the installation port 112 extending from the outer periphery into the sewage chamber 111 to form a limiting wall 113, the surface of the limiting wall 113 facing the partition 119 can also abut against the float 150 to confine the float 150 above the protrusion 1192. Since the agitator 120 extends into the sewage chamber 111 from the installation port 112, and the drive 130 is at least partially inserted into the limiting wall 113, the float 150, which is confined above the protrusion 1192 by the inner surface of the limiting wall 113, always has a certain height difference between its entire range of motion and the agitator 120, and a narrow channel is formed between the two. This means that when the agitator 120 stirs the sewage to create a vortex, it will not have a significant impact on the sewage at the location of the float 150. That is, the sewage at the location of the float 150 will not experience a large change in liquid level, thereby avoiding detection errors by the float 150.

[0105] Furthermore, the above-mentioned method of sealing the assembly gap between the drive component 130 and the mounting port 112 by means of the sealing component 140 is also applicable to the water tank 100 provided in this embodiment.

[0106] According to another aspect of the embodiments of this application, a mobile robot is provided, as detailed in [reference needed]. Figure 13 The figure shows the bottom structure of the mobile robot 500, which includes a robot body 200 and a water tank 100 in any of the above embodiments, with the water tank 100 disposed on the robot body 200.

[0107] The wastewater chamber 111 of the water tank 100 can be used to collect wastewater generated by the robot body 200. Specifically, the mobile robot 500 can be a cleaning robot, and the wastewater generated during the cleaning process will be recycled into the wastewater chamber 111.

[0108] Furthermore, such as Figure 13 As shown, the mobile robot 500 may also include a cleaning component 400, which may be, for example, a roller, and the wastewater generated by the cleaning component 400 during mopping is sucked into the wastewater chamber 111.

[0109] The clean water chamber 117 of the water tank 100 can be used to supply clean water to the robot body 200. Please refer to [link / reference] for details. Figure 14 The diagram shows a breakdown of the various components of the mobile robot 500. The mobile robot 500 may also include a drive pump 300 and a cleaning component 400, both mounted on the robot body 200. The housing 110 also has a water inlet 1102 connected to a clean water chamber 117. The drive pump 300 is connected to the water inlet 1102 via a first pipe 310 and to the water inlet 410 of the cleaning component 400 via a second pipe 320. The drive pump 300 draws clean water from the clean water chamber 117 to the cleaning component 400 to wet it and enable it to mop and clean the floor.

[0110] According to another aspect of the embodiments of this application, an intelligent robot system is also provided, which includes a base station and a mobile robot 500 as described in any of the above embodiments, the mobile robot 500 being used for movement and docking with the base station.

[0111] In some embodiments, after the mobile robot 500 moves and docks with the base station, it controls the agitator 120 to operate, thereby agitating the sewage in the sewage chamber 111 and causing the particulate matter mixed in the sewage to float up, so that it can be better discharged to the base station in the future. Specifically, the agitator 120 is rotated by controlling the drive unit 130 to operate, so that the output shaft 131 drives the agitator 120 to rotate.

[0112] In addition, after the base station is connected to the mobile robot 500, it can inject water into the clean water chamber 117 through the water inlet 1101 and recycle the sewage in the sewage chamber 111, forming a fully automated clean water addition and sewage recycling operation.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. A water tank, characterized in that, include: The container body contains a sewage chamber. The mixing component includes: The rotating body is rotatably positioned within the sewage chamber along a vertical axis; The fan blades are disposed on the rotating body and have multiple blades. The multiple fan blades are arranged circumferentially along the rotating body. Each fan blade is inclined and a flow channel is formed between two adjacent fan blades. The fan blades are used to drive the liquid entering the flow channel to flow from top to bottom when rotating with the rotating body.

2. The water tank according to claim 1, characterized in that, The downward-facing side of each fan blade is a concave arc surface.

3. The water tank according to claim 2, characterized in that, The horizontal distance between two adjacent fan blades is L1 at the top, L2 at the bottom, and L3 at the middle height position; L3>L1, L3>L2; and / or, L1>L2.

4. The water tank according to claim 1, characterized in that, The fan blades are positioned at the midpoint of the sewage chamber along its length and / or width.

5. The water tank according to claim 1, characterized in that, The housing has an installation opening at a position corresponding to the sewage chamber; The water tank also includes a drive unit and a sealing assembly; The drive unit has an output shaft at one end in the vertical direction, the rotating body is fixed on the output shaft, and the rotating body extends into the sewage chamber through the mounting port; The sealing assembly includes: A sealing cover is wrapped around the drive unit at one end where the output shaft is located, and the sealing cover has a through hole for the output shaft to pass through; A first mounting housing is fastened to the drive member from the end where the output shaft is located, so that the sealing cover is clamped between the first mounting housing and the drive member to form an interference fit. The first mounting housing is at least partially accommodated in the mounting opening. A sealing ring is sleeved on the outer periphery of the first mounting housing. The sealing ring is clamped between the inner wall of the first mounting housing and the mounting opening to form an interference fit.

6. The water tank according to claim 5, characterized in that, The sealing assembly also includes a second mounting housing, which is snapped onto the drive member from the other end opposite the output shaft and is engaged with the first mounting housing.

7. The water tank according to claim 5, characterized in that, The mounting port is located at the top of the sewage chamber, and the rotating body extends into the sewage chamber from top to bottom.

8. The water tank according to claim 7, characterized in that, The vertical distance between the top of the fan blade and the inner wall of the sewage chamber is greater than the vertical distance between the bottom of the fan blade and the inner wall of the sewage chamber.

9. The water tank according to claim 1, characterized in that, The tank body has an inlet that communicates with the sewage chamber, and the inlet is offset from the agitator.

10. The water tank according to claim 9, characterized in that, The housing is also provided with an air extraction port that communicates with the sewage chamber. The air extraction port and the sewage inlet are located on opposite sides of the sewage chamber.

11. The water tank according to claim 1, characterized in that, The tank also includes a clear water chamber separated from the sewage chamber. The tank is provided with an overflow port communicating with the clear water chamber and an inlet port communicating with the sewage chamber. The overflow port and the inlet port are connected to the outside of the tank via an overflow pipe. Water overflowing from the clear water chamber enters the sewage chamber in sequence through the overflow port, the overflow pipe and the inlet port.

12. The water tank according to claim 11, characterized in that, A float is installed in the sewage chamber, and at least part of the water entering from the inlet flows to the float.

13. The water tank according to claim 11, characterized in that, A partition is provided in the middle of the interior of the box, which divides the space on both sides of the interior of the box into the sewage chamber and the clean water chamber. A water inlet is provided in the middle of one side of the box, and a water inlet channel is provided on the partition to connect the water inlet and the clear water chamber.

14. A mobile robot, characterized in that, The system includes a robot body and a water tank as described in any one of claims 1-13, the water tank being disposed on the robot body, and the wastewater chamber being used to collect wastewater generated by the robot body.

15. An intelligent robot system, characterized in that, The system includes a base station and the mobile robot as described in claim 14, wherein the mobile robot is used to move and dock with the base station, and then controls the stirring component to work to agitate the sewage in the sewage chamber.

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