Self-cleaning sewage tank, waterway system, cleaning robot, base station and cleaning system

Abstract

The utility model belongs to the technical field of cleaning equipment, and relates to a self-cleaning sewage tank, a waterway system, a cleaning robot, a base station and a cleaning system.The self-cleaning sewage tank comprises a tank body, the tank body is provided with a water storage cavity, a water inlet pipe and a water outlet pipe, the water inlet pipe communicates with a water inlet pipeline, and the water outlet pipe communicates with a water outlet pipeline; when the sewage tank is in a first use state, sewage enters the water storage cavity through the water inlet pipeline and the water inlet pipe in sequence and then is drained to the water outlet pipeline through the water drainage pipe; when the sewage tank is in the second use state, cleaning water enters the water storage cavity through the water inlet pipeline and the water inlet pipe in sequence and then is drained to the water outlet pipeline through the water drainage pipe, so that the water inlet pipeline, the water inlet pipe, the water storage cavity, the water drainage pipe and the water outlet pipeline which sequentially flow through are cleaned. The pipeline used for cleaning water and the sewage buffering and discharging pipeline are shared, a cleaning pipeline does not need to be independently arranged, a sewage link can be completely cleaned, the cleaning effect is good, the cost is low, and the structure is simple.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cleaning equipment, and in particular, to a self-cleaning sewage tank, a water circuit system, a cleaning robot, a base station, and a cleaning system. Background Art

[0002] Cleaning equipment such as a sweeping robot and a mopping robot with an automatic water supply and drainage function is usually equipped with an automatic water supply and drainage sewage tank connected to a cleaning tank of a base station for sewage transfer. Since there are generally dirt such as cotton wool, hair, and fine sediment in the sewage, it is inevitable that dirt will remain in the sewage tank when the sewage flows through the sewage tank repeatedly. After the dirt accumulates continuously, it is easy to cause problems such as pipeline blockage and unpleasant odors, and it is necessary to repair or replace the sewage tank in time, which affects the user experience.

[0003] The sewage tank of existing cleaning equipment often adds a separate cleaning water circuit to clean the sewage tank, which will lead to increased costs, a more complex system, and easy blockage of the clean water outlet. In addition, the cleaning operation is complex, and the entire sewage link cannot be cleaned, resulting in poor cleaning effects. Summary of the Utility Model

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art. Embodiments of the present disclosure provide a self-cleaning sewage tank, which adopts the following technical solutions:

[0005] The self-cleaning sewage tank is applied to a cleaning robot and / or a base station. The cleaning robot includes a cleaning member, and the cleaning member is cleaned before or after the cleaning robot performs a cleaning task.

[0006] The self-cleaning sewage tank is used to cache the sewage after cleaning the cleaning member. The self-cleaning sewage tank includes:

[0007] A box body having a water storage cavity, and a water inlet pipe and a drain pipe communicating with the water storage cavity;

[0008] The water inlet pipe communicates with an inlet water pipeline;

[0009] The drain pipe communicates with an outlet water pipeline;

[0010] In a first use state of the sewage tank, the sewage sequentially enters the water storage cavity through the inlet water pipeline and the water inlet pipe, and then is discharged to the outlet water pipeline through the drain pipe;

[0011] In a second use state of the sewage tank, by making the cleaning water sequentially enter the water storage cavity through the inlet water pipeline and the water inlet pipe, and then be discharged to the outlet water pipeline through the drain pipe, the inlet water pipeline, the water inlet pipe, the water storage cavity, the drain pipe, and the outlet water pipeline through which the cleaning water flows in sequence are cleaned.

[0012] In some embodiments of the present disclosure, the water inlet pipe is tangent to the cavity wall of the water storage cavity, so that the water flow flowing out of the water inlet pipe flows into the water storage cavity along a direction tangent to the cavity wall of the water storage cavity; and / or,

[0013] The drain pipe is provided at the bottom of the water storage cavity; and / or,

[0014] An annular diversion groove is formed on the cavity wall of the water storage cavity. The water inlet pipe communicates with and is tangent to the annular diversion groove. The water flow flowing out of the water inlet pipe flows towards the annular diversion groove, and under the guiding action of the annular diversion groove, flows along the inside of the annular diversion groove, and at the same time, flows down along the cavity wall of the water storage cavity under the action of its own weight to wash the cavity wall of the water storage cavity; and / or,

[0015] The inner diameter of the water storage cavity gradually decreases along the direction from the cavity top to the cavity bottom; and / or,

[0016] The cavity bottom of the water storage cavity is inclined towards the direction of the drain pipe, so that the drain pipe is located at the lowest position of the water storage cavity; and / or,

[0017] The cavity bottom surface of the water storage cavity is an inclined surface or a conical surface.

[0018] In some embodiments of the present disclosure, the depth direction of the water storage cavity is set as the first direction, and the second direction is perpendicular to the first direction;

[0019] The drain pipe is arranged at the lowest position of the box body along a direction parallel to the first direction;

[0020] Alternatively, the drain pipe is arranged at the lowest position of the box body along a direction tangent to or parallel to the cavity bottom surface of the water storage cavity;

[0021] Alternatively, the drain pipe is arranged at the lowest position of the box body along any direction within the included angle range of the first direction and the second direction;

[0022] Alternatively, the drain pipe is arranged at the lowest position of the box body along the second direction.

[0023] In some embodiments of the present disclosure, the drain pipe has: a straight pipe cylinder and a first drain hole and a second drain hole located at both ends of the straight pipe cylinder;

[0024] The first drain hole is located at the bottom of the box body and communicates with the water storage cavity;

[0025] The second drain hole is located outside the box body and communicates with the water outlet pipeline;

[0026] Wherein, the aperture diameter of the second drain hole is greater than or equal to that of the first drain hole; or, the inner diameter of the straight tube gradually increases in the direction from the first drain hole to the second drain hole.

[0027] In some embodiments of the present disclosure, the box body includes:

[0028] A box main body having a box cavity with an opening;

[0029] A box cover covering the box main body to seal the opening and jointly enclose the water storage cavity with the box main body;

[0030] Wherein, an annular diversion groove is formed on the cavity wall of the box cavity near the opening, the water inlet pipe is tangent to the annular diversion groove, and both the water inlet pipe and the drain pipe communicate with the box cavity.

[0031] In some embodiments of the present disclosure, a hollow air pipe is provided on the box body or the box cover. The first end of the air pipe communicates with the water storage cavity and is higher than the highest water level of the water storage cavity, and the second end of the air pipe is exposed outside the box body or the box cover.

[0032] In some embodiments of the present disclosure, the sewage box further includes a water retaining ring for preventing the liquid in the water storage cavity from flowing out through the air pipe; the water retaining ring is arranged on the box body or the box cover and corresponds to the position of the first end of the air pipe, or the water retaining ring is sleeved on the first end of the air pipe; and / or,

[0033] The air pipe is a straight pipe arranged perpendicular to the box cover; or, the air pipe is a bent pipe including a first section and a second section that are interconnected. Wherein, the first section is arranged perpendicular to or parallel to the box cover, the direction of the second section is different from that of the first section, and at least the second section is exposed outside the box body or the box cover.

[0034] In some embodiments of the present disclosure, the box cover is sealed to the box main body by ultrasonic welding; or, the box cover and the box main body are detachably connected, and the box body further includes: a sealing member, the sealing member is located between the box cover and the box body; and / or,

[0035] The box cover is further provided with an annular water blocking body for blocking the liquid in the annular diversion groove from splashing towards the cavity wall direction away from the water storage cavity, so that the liquid can flow along the cavity wall of the water storage cavity to the bottom of the box main body.

[0036] In some embodiments of the present disclosure, an annular water blocking body is further provided on the bottom of the lid facing the main body of the box. The height of the annular water blocking body is not less than the height of the annular diversion groove, and when the lid is closed on the main body of the box, the annular water blocking body is located between the annular diversion groove and the center line of the box cavity.

[0037] To solve the above technical problems, an embodiment of the present disclosure also provides a water circuit system, adopting the following technical solution:

[0038] The water circuit system is applied to a cleaning robot and / or a base station, and the water circuit system includes:

[0039] The above-mentioned sewage tank;

[0040] A water inlet pipeline, which is communicated with the water inlet pipe;

[0041] A water outlet pipeline, which is communicated with the drain pipe; and

[0042] A power mechanism, which is communicated with the sewage tank, and the power mechanism is used to switch between a first state and a second state; when the power mechanism is in the first state, the power mechanism makes the sewage or the cleaning water enter the water storage cavity from the water inlet pipeline; when the power mechanism is in the second state, the power mechanism makes the sewage or the cleaning water in the water storage cavity be discharged to the water outlet pipeline through the drain pipe.

[0043] To solve the above technical problems, an embodiment of the present disclosure also provides a cleaning robot, adopting the following technical solution:

[0044] The cleaning robot includes:

[0045] A robot body; and

[0046] The above-mentioned sewage tank, and the sewage tank is arranged on the robot body; or,

[0047] The above-mentioned water circuit system, and the water circuit system is arranged in the robot body.

[0048] To solve the above technical problems, an embodiment of the present disclosure also provides a base station, adopting the following technical solution:

[0049] The base station includes:

[0050] A base station body; and

[0051] The above-mentioned sewage tank, and the sewage tank is arranged on the base station body; or,

[0052] The above-mentioned water circuit system, and the water circuit system is arranged in the base station body.

[0053] To solve the above technical problems, embodiments of the present disclosure also provide a cleaning system, which adopts the following technical solutions:

[0054] The cleaning system includes:

[0055] The above-mentioned sewage tank;

[0056] A cleaning robot; and

[0057] A base station, the base station is adapted to be used with the cleaning robot, and the cleaning robot enters the base station for maintenance;

[0058] Wherein, the sewage tank is arranged in the cleaning robot and / or the base station.

[0059] In some embodiments of the present disclosure, the base station is provided with the sewage tank and a cleaning tank, the cleaning tank is communicated with the water inlet pipeline, and the cleaning tank is used for accommodating and cleaning the cleaning parts of the cleaning robot;

[0060] After the cleaning robot enters the docking position of the base station, water is injected into the cleaning tank to clean the cleaning parts. The sewage after cleaning the cleaning parts sequentially enters the water storage cavity through the water inlet pipeline and the water inlet pipe, and then is discharged to the water outlet pipeline through the drain pipe; after the cleaning of the cleaning parts is completed, the cleaning water is continuously injected into the cleaning tank, and the cleaning water sequentially enters the water storage cavity through the water inlet pipeline and the water inlet pipe, and then is discharged to the water outlet pipeline through the drain pipe, so as to clean the water inlet pipeline, the water inlet pipe, the water storage cavity, the drain pipe and the water outlet pipeline through which it flows in sequence.

[0061] Compared with the prior art, the self-cleaning sewage tank, waterway system, cleaning robot, base station and cleaning system provided by the embodiments of the present disclosure mainly have the following beneficial effects:

[0062] The self-cleaning sewage tank not only has the functions of caching and discharging sewage, but also has a self-cleaning function; and the pipelines used for cleaning water share the pipelines for sewage caching and discharging. First, there is no need to separately set up a cleaning pipeline, which is beneficial to reducing costs, simplifying the entire water pipeline system, and reducing the overall occupied space. Moreover, the pumping logic for self-cleaning is the same as that for sewage pumping, and the drainage logic for self-cleaning is the same as that for sewage discharging, which is simple and easy to implement. Second, it can fundamentally solve the problem that when using the spray cleaning method, due to the small diameter of the water outlet, dirt may block the water outlet. Third, the cleaning water will flow through all the paths that the sewage flows through. Therefore, the cleaning water can completely clean the entire sewage pipeline, such as the water inlet pipeline, the water inlet pipe, the water storage cavity of the sewage tank, the drainage pipe, and the water outlet pipeline. Fourth, after each time the cleaning part is washed and the pumping and discharging actions are completed, then performing the self-cleaning action can quickly clean the dirt residue in the sewage tank, with good cleaning effect, and it is also beneficial to reducing pipeline blockage and maintenance frequency, and improving the user experience. Description of the Drawings

[0063] In order to more clearly illustrate the solutions in the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present disclosure or the corresponding prior art. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0064] Figure 1 is a schematic diagram of the working principle of the self-cleaning sewage tank in an example of the present disclosure;

[0065] Figure 2 is a schematic three-dimensional structure diagram of the self-cleaning sewage tank in an example of the present disclosure;

[0066] Figure 3 is a schematic three-dimensional sectional view of the self-cleaning sewage tank in an example of the present disclosure;

[0067] Figure 4 is a schematic three-dimensional exploded view of the self-cleaning sewage tank in an example of the present disclosure;

[0068] Figure 5 is a schematic three-dimensional structure diagram of the tank body of the box in an example of the present disclosure;

[0069] Figure 6 is Figure 5 the front view of the tank body of the box in the middle box body;

[0070] Figure 7 is a schematic three-dimensional structure diagram of the tank body of the box in an example of the present disclosure;

[0071] Figure 8 is a schematic three-dimensional sectional view of the tank body of the box in an example of the present disclosure;

[0072] Figure 9 It is a schematic perspective view of the box body of the box in another example of the present disclosure;

[0073] Figure 10 It is a schematic perspective view of the box body of the box in yet another example of the present disclosure;

[0074] Figure 11 It is a schematic perspective view of the box body of the box in another example of the present disclosure;

[0075] Figure 12 is Figure 11 the front view of the box body of the box in

[0076] Figure 13 It is a schematic perspective view of the box cover of the box in an example of the present disclosure from one perspective;

[0077] Figure 14 It is a schematic perspective view of the box cover of the box in another example of the present disclosure from one perspective;

[0078] Figure 15 It is a schematic perspective view of the box cover of the box in an example of the present disclosure from another perspective;

[0079] Figure 16 It is a schematic perspective view of the box cover of the box in another example of the present disclosure from yet another perspective;

[0080] Figure 17 It is a schematic perspective view of the box cover of the box in yet another example of the present disclosure;

[0081] Figure 18 It is a schematic diagram of the water circuit system in an example of the present disclosure;

[0082] Figure 19 It is a schematic diagram of the cleaning robot in an example of the present disclosure;

[0083] Figure 20 It is a schematic diagram of the base station in an example of the present disclosure;

[0084] Figure 21 It is a schematic diagram of the cleaning system in an example of the present disclosure.

[0085] The reference numerals in the drawings are as follows:

[0086] 1000. Cleaning system; 100. Water circuit system; 110. Water inlet pipeline; 120. Water outlet pipeline; 200. Sewage tank; 300. Power mechanism; 400. Cleaning robot; 410. Robot body; 420. Cleaning part; 500. Base station; 510. Base station body; 520. Cleaning tank; 600. First direction; 700. Second direction;

[0087] 1. Box body; 11. Water storage cavity; 111. Annular diversion groove; 12. Water inlet pipe; 13. Drain pipe; 131. Straight tube; 1311. First drain hole; 1312. Second drain hole; 14. Box main body; 141. Box cavity; 142. Open end; 15. Box cover; 151. Annular water retaining body; 16. Sealing member;

[0088] 2. Air pipe; 21. First end; 22. Second end; 23. First section; 24. Second section;

[0089] 3. Water retaining ring. Detailed implementation manners

[0090] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this disclosure belongs; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this disclosure. For example, the terms such as "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, and are only for convenience of description and cannot be construed as a limitation to the technical solution of the present application.

[0091] The terms "including" and "having" and any variations thereof in the specification and claims of this disclosure and the above-mentioned drawings are intended to cover non-exclusive inclusion; the terms "first", "second", etc. in the specification and claims of this disclosure or the above-mentioned drawings are used to distinguish different objects and are not used to describe a specific order. The meaning of "a plurality" is two or more unless otherwise specifically defined.

[0092] In the specification, claims and the above-mentioned drawings of this disclosure, when an element is referred to as being "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it can be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

[0093] In addition, the mention of "embodiment" in this document means that the specific features, structures, or characteristics described in connection with the embodiment can be included in at least one embodiment of the present disclosure. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0094] An embodiment of the present disclosure provides a self-cleaning sewage tank 200, which can be applied to a cleaning robot 400 and / or a base station 500. The cleaning robot 400 described herein includes, but is not limited to, a floor sweeper, a mopping machine, a sweeping and mopping integrated machine, a floor washing machine, etc. Of course, in other embodiments, the self-cleaning sewage tank 200 can also be used in other suitable scenarios, which will not be elaborated here.

[0095] Exemplarily, the cleaning robot 400 includes a cleaning member 420. Among them, before or after the cleaning robot 400 executes a cleaning task, it is necessary to clean the cleaning member 420 to ensure the cleaning effect. Correspondingly, the self-cleaning sewage tank 200 can be used to cache the sewage after cleaning the cleaning member 420. It can be understood that, for the convenience of the sewage tank 200 to cache and discharge the sewage after cleaning the cleaning member 420, generally, as Figure 1 shown, the sewage tank 200 is connected to a water inlet pipe 110 and a water outlet pipe 120. Among them, sewage can enter the sewage tank 200 from the inlet pipe 110 and can be discharged from the sewage tank 200 through the outlet pipe 120.

[0096] In an embodiment of the present disclosure, as Figure 1 and Figure 2 shown, the self-cleaning sewage tank 200 includes a box body 1. The box body 1 has a water storage cavity 11, a water inlet pipe 12, and a drain pipe 13. Among them, the water inlet pipe 12 and the drain pipe 13 are communicated with the water storage cavity 11, and the water inlet pipe 12 is communicated with the water inlet pipe 110, and the drain pipe 13 is communicated with the water outlet pipe 120.

[0097] It should be noted that the water inlet pipe 12 can be inclined at an angle α with respect to the horizontal cross-section of the box body 1. For example, -30° ≤ α ≤ 30°. Exemplarily, when the box body 1 is placed horizontally, when α = 0°, the water inlet pipe 12 is horizontally arranged; when α is negative, the water inlet pipe 12 is inclined downward (i.e., in the direction of the bottom of the box), and conversely, when α is positive, the water inlet pipe 12 is inclined upward (i.e., in the direction of the box opening).

[0098] In an embodiment of the present disclosure, the sewage tank 200 has at least a first usage state and a second usage state. Wherein, in the first usage state of the sewage tank 200, sewage sequentially passes through the water inlet pipeline 110 and the water inlet pipe 12 and enters the water storage cavity 11, and then is discharged to the water outlet pipeline 120 through the drain pipe 13. That is to say, in the first usage state of the sewage tank 200, the sewage that enters the sewage tank 200 and then is discharged from the sewage tank 200 is sewage. For example, it is the sewage after cleaning the cleaning member 420.

[0099] In the second usage state of the sewage tank 200, by making the cleaning water sequentially pass through the water inlet pipeline 110 and the water inlet pipe 12 and enter the water storage cavity 11, and then be discharged to the water outlet pipeline 120 through the drain pipe 13, so that the cleaning water sequentially cleans the water inlet pipeline 110, the water inlet pipe 12, the water storage cavity 11, the drain pipe 13 and the water outlet pipeline 120 that the cleaning water flows through. In this way, not only the self-cleaning of the sewage tank 200 is realized, but also the cleaning of the waterway through which the sewage flows can be realized.

[0100] It can be understood that the second usage state of the sewage tank 200 is carried out after the first usage state. In other words, after the sewage pumping and discharging actions of the sewage tank 200 are completed, the water pumping and draining are then completed for self-cleaning, and it is implemented using the same waterway system 100 as in the first usage state.

[0101] Exemplarily, as Figure 1 shown, after the cleaning member 420 of the cleaning robot 400 is cleaned in the cleaning tank 520 of the base station 500, the sewage in the cleaning tank 520 can be pumped into the water storage cavity 11 of the box body 1 through the water inlet pipeline 110 and the water inlet pipe 12, and then is finally discharged through the drain pipe 13 and the water outlet pipeline 120, for example, discharged into the sewer. After the sewage is discharged from the water storage cavity 11, in order to clean the sewage tank 200 and the like as soon as possible, a certain amount of cleaning water can be injected into the cleaning tank 520 of the base station 500, and the above-mentioned water pumping and draining actions are performed again. Specifically, the cleaning water can be pumped into the water storage cavity 11 of the box body 1 through the water inlet pipeline 110 and the water inlet pipe 12 to realize the self-cleaning of the water storage cavity 11, and then is discharged from the water storage cavity 11 through the drain pipe 13 and the water outlet pipeline 120. Obviously, in the water pumping and draining actions of the cleaning water, the cleaning water can clean the cleaning tank 520 of the base station 500, the water inlet pipeline 110, the water inlet pipe 12, the water storage cavity 11 of the box body 1, the drain pipe 13, the water outlet pipeline 120, etc., that is, the entire waterway system is cleaned.

[0102] It should be noted that in the second usage state, the water consumption of the cleaning water can be selected according to the volume of the sewage tank 200 and the like to ensure that the sewage tank 200 can be completely rinsed.

[0103] In addition, the sewage pumping / draining and sewage discharging / draining operations of the sewage tank 200 can be carried out automatically, and of course, they can also be carried out manually. That is to say, the sewage tank 200 can be an ordinary sewage tank 200 or a sewage tank 200 with automatic water supply and drainage. Optionally, the self-cleaning sewage tank 200 can supply and drain water automatically and clean itself automatically.

[0104] In summary, compared with the prior art, the self-cleaning sewage tank 200 has at least the following beneficial effects:

[0105] The self-cleaning sewage tank 200 not only has the functions of buffering sewage and discharging sewage, but also has a self-cleaning function; and the pipelines used for cleaning water are shared with the pipelines for sewage buffering and discharging. First, there is no need to separately set up a cleaning pipeline, which is beneficial to reducing costs, simplifying the entire water pipeline system 100 and reducing the overall occupied space, and the pumping logic of self-cleaning and the sewage pumping logic, as well as the drainage logic of self-cleaning and the sewage discharging logic, are the same, which is simple and easy to implement; second, it can fundamentally solve the problem that the small diameter of the water outlet causes dirt to block the water outlet when using the spray cleaning method; third, the cleaning water will flow through all the paths that the sewage flows through. Therefore, the cleaning water can completely clean the entire sewage link such as the water inlet pipeline 110, the water inlet pipe 12, the water storage cavity 11 of the sewage tank 200, the drain pipe 13, and the water outlet pipeline 120. Fourth, after each time the cleaning part 420 finishes the sewage pumping and discharging operations, then the self-cleaning operation is performed, and the dirt residue in the sewage tank 200 can be quickly cleaned, with good cleaning effect, which is also beneficial to reducing the situation of pipeline blockage, reducing the maintenance frequency, and improving the user experience.

[0106] In order to enable those skilled in the art to better understand the solution of the present disclosure, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below in conjunction with the attached Figures 1 to 17 drawings, and the technical solutions in the embodiments of the present disclosure will be described clearly and completely.

[0107] In some embodiments of the present disclosure, in order to improve the self-cleaning ability of the self-cleaning sewage tank 200, as Figure 2 shown in Figure 4 and

[0108] Figure 3 Figure 4 shown in Figure 4As shown, to further improve the self-cleaning ability of the self-cleaning water tank 200, an annular diversion groove 111 is formed on the cavity wall of the water storage cavity 11. Among them, the water inlet pipe 12 communicates with the annular diversion groove 111 and is tangent to the annular diversion groove 111. It can be understood that after the water flow flowing out of the water inlet pipe 12 flows into the annular diversion groove 111, due to its certain initial velocity, it can flow circumferentially along the inner part of the annular diversion groove 111 under the guiding action of the annular diversion groove 111. At the same time, the water flow in the annular diversion groove 111 can flow down along the cavity wall of the water storage cavity 11 (for example, in a spiral shape) under the action of its own weight to wash the cavity wall of the water storage cavity 11.

[0109] Furthermore, it can be further understood that by directly adjusting the structure of the water tank 200, it is possible to ensure the flushing of the cavity wall of the entire water storage cavity 11 of the water tank 200 without separately adding a cleaning pipeline, and the cleaning effect is good, which is conducive to realizing the characteristics of low cost, simple system, and small volume.

[0110] And / or, similarly, to improve the cleaning effect, the inner diameter of the water storage cavity 11 gradually decreases from the cavity top to the cavity bottom direction to ensure that after the water flow flowing out of the water outlet pipe enters the water storage cavity 11, the entire cavity wall of the water storage cavity 11 can be washed during the downward flow under the action of its own weight.

[0111] Exemplarily, an annular diversion groove 111 is formed on the cavity wall of the water storage cavity 11, and from the annular diversion groove 111 or from the top of the annular diversion groove 111, the inner diameter of the water storage cavity 11 gradually decreases towards the cavity bottom.

[0112] It should be noted that except for the bottom surface, the other parts of the water storage cavity 11 can be circular or close to circular. In addition, the annular diversion groove 111 can be circular or elliptical, which can be determined according to the shape of the cavity wall of the box body 1, and is mainly used to guide the water flow of the water inlet pipe 12 to flow circumferentially first after entering the box body 1.

[0113] And / or, to ensure that liquids such as sewage or cleaning water in the water storage cavity 11 are discharged from the water storage cavity 11 as soon as possible and more thoroughly, the cavity bottom of the water storage cavity 11 is inclined towards the drain pipe 13 so that the drain pipe 13 is located at the lowest position of the water storage cavity 11.

[0114] And / or, the cavity bottom surface of the water storage cavity 11 is an inclined surface or a conical surface to ensure that the drain pipe 13 is located at the lowest position of the entire water tank 200 to prevent dirt from depositing at the bottom of the water storage cavity 11 and being unable to be discharged from the water tank 200.

[0115] And / or, as Figure 2 and Figure 3 As shown, the drain pipe 13 is arranged at the bottom of the water storage cavity 11 to facilitate the more thorough discharge of the dirt in the water storage cavity 11 and prevent it from depositing on the cavity bottom of the water storage cavity 11.

[0116] As shown Figure 6 , Figure 10 or Figure 12 shown, the depth direction of the water storage cavity 11 is set as the first direction 600, and the second direction 700 is perpendicular to the first direction 600. Exemplarily, when the box body 1 of the sewage tank 200 is placed horizontally, the first direction 600 is the vertical direction and the second direction 700 is the horizontal direction.

[0117] Optionally, in order to arrange the drain pipe 13 at the bottom of the water storage cavity 11, some embodiments of the present disclosure have at least the following specific implementation manners, specifically as follows:

[0118] In the first specific implementation manner, as Figures 2 to 8 shown, the drain pipe 13 is arranged at the lowest position of the box body 1 along the direction parallel to the first direction 600 (see Figure 6 ). Exemplarily, the bottom surface of the water storage cavity 11 is an offset conical surface, wherein the drain pipe 13 is vertically arranged downward at the lowest point of the conical surface. In this way, when the water flow forms a swirling water flow and spirally flows downward in the water storage cavity 11 of the sewage tank 200, during the process of bubble rupture generated by the drain pipe 13, it is beneficial to reduce the noise generated by bubble rupture.

[0119] Alternatively, in the second specific implementation manner, the drain pipe 13 is arranged at the lowest position of the box body 1 along a direction tangent to or parallel to the bottom surface of the water storage cavity 11. Exemplarily, as Figure 9 and Figure 10 shown, the bottom surface of the water storage cavity 11 is an inclined surface or a conical surface, and the drain pipe 13 is arranged along a direction tangent to the bottom surface of the water storage cavity 11 and is located at the lowest position of the box body 1. Optionally, the drain pipe 13 is arranged in the direction of the longest generatrix of the offset conical bottom surface downward and is tangent to the conical bottom surface. In this way, on the one hand, it is beneficial to reduce the installation size required by the drain pipe 13 in the vertical direction, and thus the height size of the cleaning robot 400 or the base station 500 can be reduced; on the other hand, it is beneficial to the water flow in the water storage cavity 11, such as sewage or cleaning water, to be discharged more smoothly.

[0120] Alternatively, in the third specific implementation manner, the drain pipe 13 is arranged at the lowest position of the box body 1 along any direction within the included angle range of the first direction 600 and the second direction 700. Exemplarily, when the sewage tank 200 is horizontally arranged, the drain pipe 13 is arranged obliquely downward and is located at the lowest position of the box body 1, which is not only beneficial to reducing the installation size required by the drain pipe 13, but also beneficial to the water flow in the water storage cavity 11 to be discharged more smoothly.

[0121] Alternatively, in the fourth specific implementation manner, the drain pipe 13 is arranged at the lowest position of the box body 1 along the second direction 700. Exemplarily, as Figure 11 and Figure 12As shown, the bottom of the water storage cavity 11 is an offset conical surface. When the box body 1 is placed horizontally, the drain pipe 13 is located at the lowest point of the conical surface and extends horizontally out of the box body 1. In this way, it is also beneficial to reduce the installation size required for the drain pipe 13 in the vertical direction, facilitate the layout of the installation pipeline, and also help reduce the height size of the cleaning robot 400 or the base station 500. Compared with the above three other embodiments, in this embodiment, the drain pipe 13 is arranged at the lowest point of the box body 1 along the second direction 700, and the overall height of the sewage tank 200 is the smallest. Correspondingly, the height of the cleaning robot 400 or the base station 500 is also the smallest.

[0122] In some embodiments of the present disclosure, as Figure 3 and Figure 8 shown, the drain pipe 13 has a straight pipe section 131, a first drain hole 1311, and a second drain hole 1312. Among them, the first drain hole 1311 and the second drain hole 1312 are respectively located at both ends of the straight pipe section 131, and the first drain hole 1311 is located at the bottom of the box body 1 and communicates with the water storage cavity 11, and the second drain hole 1312 is located outside the box body 1 and communicates with the water outlet pipeline 120.

[0123] Optionally, to enable the water flow in the water storage cavity 11 to drain out of the water storage cavity 11 more smoothly, the aperture of the second drain hole 1312 is greater than or equal to the aperture of the first drain hole 1311; or, the inner diameter of the straight pipe section 131 gradually increases along the direction from the first drain hole 1311 to the second drain hole 1312.

[0124] In some embodiments of the present disclosure, as Figures 2 to 4 shown, the box body 1 includes a box main body 14 and a box cover 15. The box main body 14 has a box cavity 141 with an opening 142 (see Figure 4 ), and both the water inlet pipe 12 and the drain pipe 13 communicate with the box cavity 141. The box cover 15 is covered on the box main body 14 to seal the opening 142, and the box cover 15 and the box main body 14 together enclose the above-mentioned water storage cavity 11.

[0125] Again, as Figure 4 shown, an annular diversion groove 111 is formed on the cavity wall of the box cavity 141 of the box main body 14 near the opening 142, and the annular diversion groove 111 is tangentially connected to the water inlet pipe 12 to guide the water tangentially entering the box cavity 141 from the water inlet pipe 12 to flow circumferentially first, so as to fully wash the box main body 14 and the box cover 15.

[0126] In some embodiments of the present disclosure, as Figures 2 to 4As shown in the figure, to pump sewage or clean water into the sewage tank 200 and discharge the sewage or clean water in the sewage tank 200 from the sewage tank 200, a hollow air pipe 2 is provided on the box body 1 or the box cover 15. Among them, the first end 21 of the air pipe 2 communicates with the water storage cavity 11 and is higher than the highest water level of the water storage cavity 11. The second end 22 of the air pipe 2 is exposed outside the box body 1 or the box cover 15 to communicate with the external air circuit.

[0127] Exemplarily, when the sewage tank 200 is in the first use state, the drain pipe 13 and the water outlet pipeline 120 can be sealed to keep the water inlet pipeline 110 and the water inlet pipe 12 unblocked. The power mechanism 300, such as an air pump, pumps air from the sewage tank 200 through the air pipe 2, and uses negative pressure to pump sewage (for example, the sewage in the cleaning tank 520 of the base station 500) along the water inlet pipeline 110 and the water inlet pipe 12 into the water storage cavity 11 of the sewage tank 200 in sequence to achieve the sewage pumping action; after the sewage is pumped into the sewage tank 200, the water inlet pipeline 110 or the water inlet pipe 12 can be sealed to keep the drain pipe 13 and the water outlet pipeline 120 unblocked. The power mechanism 300, such as an air pump, inflates the water storage cavity 11 of the sewage tank 200 through the air pipe 2 to press the sewage out of the water storage cavity 11 along the drain pipe 13 and the water outlet pipeline 120. Similarly, when the sewage tank 200 is in the second use state, with the cooperation of the external air circuit, the pumping or discharging of clean water can be achieved.

[0128] In some embodiments of the present disclosure, to prevent the liquid in the water storage cavity 11 from flowing out through the air pipe 2, as Figure 3 and Figure 15 shown, the sewage tank 200 further includes a water retaining ring 3. Among them, the water retaining ring 3 is arranged on the box body 1 or the box cover 15, and the position of the water retaining ring 3 corresponds to the first end 21 of the air pipe 2, or the water retaining ring 3 is sleeved on the first end 21 of the air pipe 2.

[0129] To simplify the overall structure, as Figure 13 and Figure 14 shown, the air pipe 2 is arranged on the box cover 15.

[0130] Exemplarily, in a specific embodiment, as Figure 14 shown, the air pipe 2 is a straight pipe, and the air pipe 2 is arranged in a direction perpendicular to the box cover 15. Exemplarily, when the box body 1 is placed horizontally, the air pipe 2 extends vertically upward and is located at the middle position of the box cover 15. Among them, as Figure 15 shown, at the corresponding position of the first end 21 of the air pipe 2, the water retaining ring 3 is arranged on the inner wall of the box cover 15 around the first end 21 of the air pipe 2. Or, as Figure 16 shown, the first end 21 of the air pipe 2 can directly communicate with the water storage cavity 11.

[0131] Or, in another specific embodiment, as Figure 13As shown, the trachea 2 is a bent pipe, which includes a first section 23 and a second section 24 that are connected to each other. Among them, the direction of the second section 24 is not the same as that of the first section 23, and the first section 23 of the trachea 2 is arranged along a direction perpendicular or parallel to the lid 15 and is connected to the water storage cavity 11. At least the second section 24 is exposed outside the box body 1 or the lid 15 and is connected to an external air circuit.

[0132] Exemplarily, as Figure 13 shown, when the box body 1 is placed horizontally, the first section 23 of the trachea 2 is vertically arranged at the middle position of the lid 15, the second section 24 of the trachea 2 is horizontally arranged, one end of the first section 23 is connected to the water storage cavity 11 of the sewage tank 200, the other end of the first section 23 is exposed outside the lid 15, one end of the second section 24 is connected to the other end of the first section 23, and the other end of the second section 24 is connected to an external air circuit. Understandably, the second section 24 of the trachea 2 is horizontally installed, which is beneficial to reducing the overall height of the sewage tank 200, and thus beneficial to reducing the required installation space. Another exemplarily, as Figure 15 shown, at the corresponding position of one end of the first section 23 of the trachea 2, the water blocking ring 3 is arranged on the inner wall of the lid 15 around one end of the first section 23 of the trachea 2. Or, as Figure 16 shown, one end of the first section 23 of the trachea 2 can be directly communicated with the water storage cavity 11.

[0133] Optionally, to achieve the sealed closure of the lid 15 and the box body 14, in a specific embodiment, the lid 15 is sealed to the box body 14 by ultrasonic welding.

[0134] Or, in another specific embodiment, the lid 15 and the box body 14 are detachably connected. The detachable connection includes but is not limited to threaded connection, snap connection, etc., and the box body 1 further includes a seal 16, where the seal 16 is located between the lid 15 and the box body 1. Optionally, the seal 16 includes but is not limited to a rubber sealing ring.

[0135] And / or, as Figure 17 shown, the lid 15 is further provided with an annular water blocking body 151, where the annular water blocking body 151 can be used to block the liquid in the annular diversion groove 111 from splashing towards the cavity wall direction away from the water storage cavity 11, so that the liquid can flow along the cavity wall of the water storage cavity 11 to the bottom of the box body 14, thereby being beneficial to improving the cleaning effect of the cleaning water flushing the cavity wall of the water storage cavity 11.

[0136] Optionally, in some embodiments of the present disclosure, to further improve the cleaning effect of the sewage tank 200, an annular water retaining body 151 is further provided at the bottom of the lid 15 facing the main body 14 of the tank. Among them, to ensure the water retaining effect of the annular water retaining body 151, the height of the annular water retaining body 151 may not be less than the thickness of the lid 15, and the height of the annular water retaining body 151 may also not be less than the height of the annular diversion groove 111. Exemplarily, the annular water retaining body 151 protrudes from the inner side of the lid 15, and the end protrudes from the lid 15.

[0137] Moreover, when the lid 15 is closed on the main body 14 of the tank, the annular water retaining body 151 is located between the center lines of the annular diversion groove 111 and the tank cavity 141, and the position of the annular water retaining body 151 corresponds to the position of the annular diversion groove 111. Among them, the inner diameter of the annular water retaining body 151 is not greater than the inner diameter of the annular diversion groove 111. In addition, to further improve the water retaining effect of the annular water retaining body 151, when the lid 15 is closed on the main body 14 of the tank, the annular water retaining body 151 is arranged as close as possible to the annular diversion groove 111 to ensure that as little liquid as possible splashes out of the annular diversion groove 111. It can be understood that the gap between the annular water retaining body 151 and the annular diversion groove 111 can be as small as possible, as long as it does not affect the normal flow of the liquid in the annular diversion groove 111.

[0138] Exemplarily, the annular water retaining body 151 is located outside the first end 21 of the water retaining ring 3 and the air pipe 2. When the water flow tangentially enters the annular diversion groove 111 from the water inlet pipe 12, when there is liquid splashing towards the center of the tank cavity 141 (or away from the wall of the water storage cavity 11), it will directly hit the side wall of the annular water retaining body 151 close to the annular diversion groove 111, and at least part of the liquid will be rebounded to the wall of the annular diversion groove 111 and / or the water storage cavity 11, so as to ensure that the splashed liquid can flow along the wall of the water storage cavity 11 to the bottom of the main body 14 of the tank, so that more cleaning water can wash the wall of the water storage cavity 11, thereby facilitating the improvement of the cleaning effect.

[0139] Based on the above self-cleaning sewage tank 200, as Figure 18 shown, the embodiments of the present disclosure further provide a water circuit system 100, which can be applied to the cleaning robot 400 and / or the base station 500 (see Figure 21 ).

[0140] In some embodiments of the present disclosure, as Figure 18 shown, the water circuit system 100 includes the above sewage tank 200, a water inlet pipeline 110, a water outlet pipeline 120 and a power mechanism 300. The water inlet pipeline 110 is communicated with the water inlet pipe 12, the water outlet pipeline 120 is communicated with the drain pipe 13, and the power mechanism 300 is communicated with the sewage tank 200.

[0141] Among them, the power mechanism 300 can be used to switch between a first state (specifically, such as a sewage pumping state or a water pumping state) and a second state (specifically, such as a sewage discharging state or a water discharging state); when the power mechanism 300 is in the first state, the power mechanism 300 can make sewage or clean water enter the water storage cavity 11 from the water inlet pipeline 110; when the power mechanism 300 is in the second state, the power mechanism 300 can make the sewage or clean water in the water storage cavity 11 be discharged to the water outlet pipeline 120 through the drain pipe 13. Optionally, the power mechanism 300 includes but is not limited to an air pump.

[0142] Based on the above self-cleaning sewage tank 200, an embodiment of the present disclosure further provides a cleaning robot 400, as Figure 19 shown. The cleaning robot 400 includes a robot body 410 and the above self-cleaning sewage tank 200, wherein the sewage tank 200 is arranged on the robot body 410.

[0143] Alternatively, the cleaning robot 400 includes a robot body 410 and the above waterway system 100, wherein the waterway system 100 is arranged in the robot body 410.

[0144] Exemplarily, the cleaning robot 400 can be a sweeping and mopping integrated machine with a built-in clean water tank and a sewage tank 200, that is, the cleaning robot 400 can clean the cleaning part 420 by itself without returning to the base station 500 for cleaning. The sewage after the cleaning robot 400 uses the clean water in its clean water tank to clean the cleaning part 420 can enter its sewage tank 200 for caching. For example, the clean water in the clean water tank of the cleaning robot 400 is sprayed onto the dirty cleaning part 420 or a certain component or the ground to clean the dirty cleaning part 420, and the cleaned sewage (for example, the sewage on the cleaning part 420 or a certain component or the ground) is cached in the sewage tank 200. Similarly, when the sewage tank 200 is self-cleaning, the clean water in the clean water tank of the cleaning robot 400 is sprayed onto the clean cleaning part 420 or a certain component or the ground, and then enters the sewage tank 200 to clean it.

[0145] Based on the above self-cleaning sewage tank 200, an embodiment of the present disclosure further provides a base station 500, as Figure 20 shown. The base station 500 includes a base station body 510 and the above self-cleaning sewage tank 200, wherein the sewage tank 200 (not shown in the figure) is arranged on the base station body 510.

[0146] Alternatively, the base station 500 includes a base station body 510 and the above-described waterway system 100, where the waterway system (not shown in the figure) is disposed in the base station body 510. Exemplarily, a cleaning tank 520 may be provided on the base station body 510 for cleaning the cleaning member 420 in the cleaning tank 520. Among them, the sewage tank 200 is communicated with the cleaning tank 520 through a water inlet pipeline 110, or the water inlet pipeline 110 of the waterway system 100 is communicated with the cleaning tank 520.

[0147] Based on the above self-cleaning sewage tank 200, an embodiment of the present disclosure further provides a cleaning system 1000, as Figure 21 shown. The cleaning system 1000 includes the above self-cleaning sewage tank 200, a cleaning robot 400, and a base station 500. Among them, the sewage tank 200 is disposed in the cleaning robot 400 and / or the base station 500. The base station 500 is adapted to be used with the cleaning robot 400, and the cleaning robot 400 can enter the base station 500 for maintenance.

[0148] It should be noted that the maintenance described here includes but is not limited to charging, dust collection, mopping cloth washing, drying, pumping sewage and / or adding clean water for the cleaning robot 400, etc. It can be understood that the cleaning robot 400 can complete at least one of the following in the base station 500: First, the base station 500 charges the cleaning robot 400; Second, the base station 500 recovers the garbage in the cleaning robot 400 into its dust collection container; Third, cleaning the cleaning member 420 (such as a mopping cloth, a roller, etc.) of the cleaning robot 400 in the base station 500; Fourth, the base station 500 replenishes clean water to the clean water tank of the cleaning robot 400; Fifth, the base station 500 recovers the dirt in the sewage tank 200 of the cleaning robot 400 into its dirt container. The above maintenance types are only exemplary descriptions and do not limit the present disclosure.

[0149] It should be noted that the cleaning robot 400 described in this article includes but is not limited to cleaning devices such as a floor sweeper, a mopping machine, a sweeping and mopping integrated machine, a floor washer, a vacuum cleaner, etc., which include but are not limited to having a cleaning function.

[0150] In summary, compared with the prior art, the waterway system 100, the cleaning robot 400, the base station 500, and the cleaning system 1000 have at least the following beneficial effects:

[0151] By adopting the above self-cleaning sewage tank 200, the present disclosure combines the pipelines for cleaning water use with the pipelines for sewage caching and discharging, not only enabling the functions of upper and lower sewage, but also having a self-cleaning function, which is beneficial to simplifying the cleaning waterway of the sewage tank 200, reducing the overall cost and occupied space, ensuring smooth cleaning of the sewage tank 200, and enabling cleaning of the entire sewage path, which is beneficial to installation and maintenance and provides a good user experience.

[0152] In some embodiments of the present disclosure, as Figure 21 shown, in the cleaning system 1000, the base station 500 is provided with a cleaning tank 520. Among them, the sewage tank 200 can be arranged in the base station 500 or the cleaning robot 400. The cleaning tank 520 is communicated with the water inlet pipeline 110, and the cleaning tank 520 is used to accommodate and clean the cleaning parts 420 of the cleaning robot 400.

[0153] Exemplarily, when the cleaning robot 400 enters the docking position of the base station 500, water can be injected into the cleaning tank 520 to clean the cleaning parts 420. The sewage after cleaning the cleaning parts 420 sequentially passes through the water inlet pipeline 110 and the water inlet pipe 12 and enters the water storage cavity 11 of the sewage tank 200, and then is discharged to the water outlet pipeline 120 through the drain pipe 13, and finally can be discharged to the sewer through the water outlet pipeline 120.

[0154] After the cleaning parts 420 are cleaned, and the sewage in the cleaning tank 520 is pumped into the sewage tank 200 and then discharged from the sewage tank 200, the operator can continue to inject cleaning water into the cleaning tank 520. The cleaning water sequentially passes through the water inlet pipeline 110 and the water inlet pipe 12 and enters the water storage cavity 11 of the sewage tank 200, and then is discharged to the water outlet pipeline 120 through the drain pipe 13, and finally can be discharged to the sewer through the water outlet pipeline 120. In this way, the water inlet pipeline 110, the water inlet pipe 12, the water storage cavity 11, the drain pipe 13 and the water outlet pipeline 120 through which the cleaning water sequentially flows can be cleaned.

[0155] The above are only the preferred embodiments of the present disclosure and are not used to limit the present disclosure. For those skilled in the art, the present disclosure can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included within the scope of the claims of the present disclosure.

Claims

1. A self - cleaning sewage tank, applied to a cleaning robot and / or a base station, the cleaning robot includes a cleaning component, and the cleaning robot cleans the cleaning component before or after performing a cleaning task; characterized in that, The self-cleaning sewage tank is used to cache the sewage after cleaning the cleaning part, and the self-cleaning sewage tank includes: A box body having a water storage cavity, a water inlet pipe and a drain pipe communicated with the water storage cavity; The water inlet pipe is communicated with the water inlet pipeline; The drain pipe is communicated with the water outlet pipeline; In the first use state of the sewage tank, the sewage enters the water storage cavity through the water inlet pipeline and the water inlet pipe in sequence, and then is discharged to the water outlet pipeline through the drain pipe; In the second use state of the sewage tank, by making the cleaning water enter the water storage cavity through the water inlet pipeline and the water inlet pipe in sequence, and then be discharged to the water outlet pipeline through the drain pipe, so as to clean the water inlet pipeline, the water inlet pipe, the water storage cavity, the drain pipe and the water outlet pipeline that it flows through in sequence.

2. The sewage tank according to claim 1, characterized in that, The water inlet pipe is tangent to the cavity wall of the water storage cavity, so that the water flow flowing out of the water inlet pipe flows into the water storage cavity along the direction tangent to the cavity wall of the water storage cavity; and / or, The drain pipe is arranged at the bottom of the water storage cavity; and / or, An annular diversion groove is formed on the cavity wall of the water storage cavity. The water inlet pipe is communicated with and tangent to the annular diversion groove. The water flow flowing out of the water inlet pipe flows to the annular diversion groove and flows in the groove of the annular diversion groove under the guiding action of the annular diversion groove, and at the same time flows down along the cavity wall of the water storage cavity under the action of its own weight, so as to wash the cavity wall of the water storage cavity; and / or, The inner diameter of the water storage cavity gradually decreases along the direction from the cavity top to the cavity bottom; and / or, The cavity bottom of the water storage cavity is inclined towards the direction of the drain pipe, so that the drain pipe is located at the lowest position of the water storage cavity; and / or, The cavity bottom surface of the water storage cavity is an inclined surface or a conical surface.

3. The sewage tank according to claim 1, characterized in that, Set the depth direction of the water storage cavity as the first direction, and set the second direction perpendicular to the first direction; The drain pipe is arranged at the lowest position of the box body along the direction parallel to the first direction; Or, the drain pipe is arranged at the lowest position of the box body along the direction tangent to or parallel to the cavity bottom surface of the water storage cavity; Or, the drain pipe is arranged at the lowest position of the box body along any direction within the included angle range of the first direction and the second direction; Or, the drain pipe is arranged at the lowest position of the box body along the second direction.

4. The sewage tank according to claim 3, characterized in that, The drain pipe has: a straight pipe barrel and a first drain hole and a second drain hole located at both ends of the straight pipe barrel; The first drain hole is located at the bottom of the box body and communicated with the water storage cavity; The second drain hole is located outside the box body and communicated with the water outlet pipeline; Wherein, the aperture of the second drain hole is greater than or equal to the aperture of the first drain hole; or, the inner diameter of the straight pipe barrel gradually increases along the direction from the first drain hole to the second drain hole.

5. The sewage tank according to claim 1, characterized in that, The box body includes: A box main body having a box cavity with an opening; A box cover covering the box main body to seal the opening and jointly enclose the water storage cavity with the box main body; Wherein, an annular diversion groove is formed on the cavity wall of the box cavity near the opening. The water inlet pipe is tangent to the annular diversion groove, and both the water inlet pipe and the drain pipe are communicated with the box cavity.

6. The sewage tank according to claim 5, characterized in that, A hollow air pipe is provided on the box body or the box cover. The first end of the air pipe communicates with the water storage cavity and is higher than the highest water level of the water storage cavity. The second end of the air pipe is exposed outside the box body or the box cover.

7. The sewage tank according to claim 6, characterized in that, The sewage tank further includes a water blocking ring for preventing the liquid in the water storage cavity from flowing out through the air pipe. The water blocking ring is provided on the box body or the box cover and corresponds to the position of the first end of the air pipe. Alternatively, the water blocking ring is sleeved on the first end of the air pipe; and / or, The air pipe is a straight pipe and is arranged in a direction perpendicular to the box cover. Alternatively, the air pipe is a bent pipe including a first section and a second section that are interconnected. Wherein, the first section is arranged in a direction perpendicular or parallel to the box cover, the direction of the second section is different from that of the first section, and at least the second section is exposed outside the box body or the box cover.

8. The sewage tank according to claim 5, characterized in that, The box cover is sealed to the box body by ultrasonic welding. Alternatively, the box cover and the box body are detachably connected. The box body further includes a sealing member located between the box cover and the box body; and / or, The box cover is further provided with an annular water blocking body for blocking the liquid in the annular diversion groove from splashing towards the cavity wall direction away from the water storage cavity, so that the liquid can flow along the cavity wall of the water storage cavity to the bottom of the box body.

9. The sewage tank according to claim 5, characterized in that, The box cover is further provided with an annular water blocking body facing the bottom of the box body. The height of the annular water blocking body is not less than the height of the annular diversion groove, and when the box cover is closed on the box body, the annular water blocking body is located between the annular diversion groove and the center line of the box cavity.

10. A waterway system, applied to a cleaning robot and / or a base station, characterized in that, The water circuit system includes: The sewage tank according to any one of claims 1 to 9; An inlet pipeline that communicates with the inlet pipe; An outlet pipeline that communicates with the drain pipe; and A power mechanism that communicates with the sewage tank and is used to switch between a first state and a second state. When the power mechanism is in the first state, the power mechanism allows the sewage or the cleaning water to enter the water storage cavity from the inlet pipeline. When the power mechanism is in the second state, the power mechanism allows the sewage or the cleaning water in the water storage cavity to be discharged to the outlet pipeline through the drain pipe.

11. A cleaning robot, characterized in that, The cleaning robot includes: A robot body; and The sewage tank according to any one of claims 1 to 9, the sewage tank is arranged on the robot body. Alternatively, the water circuit system according to claim 10, the water circuit system is arranged in the robot body.

12. A base station, characterized in that, The base station includes: A base station body; and The sewage tank according to any one of claims 1 to 9, the sewage tank is arranged on the base station body. Alternatively, the water circuit system according to claim 10, the water circuit system is arranged in the base station body.

13. A cleaning system, characterized in that, The cleaning system includes: The sewage tank according to any one of claims 1 to 9; A cleaning robot; and A base station that is used in cooperation with the cleaning robot, and the cleaning robot enters the base station for maintenance; Wherein, the sewage tank is arranged in the cleaning robot and / or the base station.

14. The cleaning system according to claim 13, wherein The base station is provided with the sewage tank and the cleaning tank. The cleaning tank is communicated with the water inlet pipeline, and the cleaning tank is used for accommodating and cleaning the cleaning parts of the cleaning robot. After the cleaning robot enters the docking position of the base station, water is injected into the cleaning tank to clean the cleaning parts. The sewage after cleaning the cleaning parts sequentially enters the water storage cavity through the water inlet pipeline and the water inlet pipe, and then is discharged to the water outlet pipeline through the drain pipe. After the cleaning of the cleaning parts is completed, the cleaning water is continuously injected into the cleaning tank. The cleaning water sequentially enters the water storage cavity through the water inlet pipeline and the water inlet pipe, and then is discharged to the water outlet pipeline through the drain pipe, so as to clean the water inlet pipeline, the water inlet pipe, the water storage cavity, the drain pipe and the water outlet pipeline through which it flows in sequence.

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