Main unit wastewater tank

Abstract

Disclosed are a wastewater tank and a cleaning system. The wastewater tank comprises a tank cover, a tank body, and a flow distribution assembly. The flow distribution assembly is connected to the tank cover, and has a first portion and a second portion. A partition portion is formed between the first portion and the second portion. The partition portion is in sealing contact with the tank body and divides the tank body into a first cavity and a second cavity. The first portion is located in the first cavity and comprises a wastewater inlet. The second portion is located in the second cavity and comprises a flow port and a first channel section of a wastewater extraction channel. External wastewater can flow into the first cavity through the wastewater inlet and enter the second cavity through the flow port. The wastewater in the second cavity can enter the first channel section through the flow port.

Description

Host sewage tank

[0001] Cross-reference to related applications

[0002] This application claims priority to the Chinese Patent Application No. 202410785043.9, filed on June 17, 2024, entitled “Sewage Tank, Cleaning System”, the Chinese Patent Application No. 202411187458.2, filed on August 27, 2024, entitled “Sewage Tank, Cleaning System”, all of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of cleaning, in particular to a sewage tank and a cleaning system. BACKGROUND

[0004] At present, some scrubbers include a host and a base station, the host is provided with a host fan and a host sewage tank, and the base station is provided with a base station fan and a sewage discharge system. During the process of performing mopping work or self-cleaning of the host, the host fan is turned on to generate negative pressure in the host sewage tank by the host fan, and the generated sewage is sucked into the host sewage tank; after the host is docked with the base station, the base station fan on the base station is turned on to generate negative pressure in the base station sewage tank, so as to suck the sewage in the host sewage tank into the base station sewage tank, thereby automatically cleaning the host sewage tank. However, the above-mentioned double-fan structure is relatively complex, high in cost, and not conducive to installation and maintenance.

[0005] DISCLOSURE

[0006] Therefore, it is necessary to provide a sewage tank and a cleaning system capable of simplifying the cleaning system in view of the above technical problems.

[0007] In a first aspect, the present disclosure provides a sewage tank, comprising: a tank cover; a tank body; and a flow distribution assembly connected with the tank cover, having a first part and a second part, a separation part being formed between the first part and the second part, the separation part being in sealing contact with the tank body, dividing the tank body into a first cavity and a second cavity; wherein the first part is located in the first cavity and comprises a sewage inlet; the second part is located in the second cavity and comprises a flow passage and a first channel segment of a sewage suction channel; external sewage can flow into the first cavity through the sewage inlet and enter the second cavity through the flow passage, and sewage in the second cavity can enter the first channel segment through the flow passage.

[0008] In one of the embodiments, the flow passage is arranged in the bottom of the second part and is close to the first part.

[0009] In one of the embodiments, the shunt assembly comprises: a first airflow passage in communication with the first cavity; a second airflow passage in communication with the second cavity; when the sewage tank is under negative pressure, the second airflow passage drives the sewage in the first cavity to enter the second cavity through the flow passage, with the negative pressure in the second cavity being greater than that in the first cavity.

[0010] In one of the embodiments, the shunt assembly comprises: a filter, which comprises a first filter in the first cavity and a second filter in the second cavity, for filtering the sewage flowing into the sewage inlet.

[0011] In one of the embodiments, the second part comprises an openable cover, which has a flow guide passage between the cover and the second filter; the sewage filtered by the first filter reaches the flow passage through the flow guide passage and enters the second cavity.

[0012] In one of the embodiments, a lock structure is arranged between the second part and the cover, which has an unlocked state and an open state, so that the cover has an open state and a closed state correspondingly.

[0013] In one of the embodiments, an abutting piece is arranged on the cover; when the shunt assembly is installed in the sewage tank, the abutting piece has a pressing force between the abutting piece and the inner wall of the tank body, for driving the cover to be in the closed state by the pressing force when the lock structure is in the unlocked state.

[0014] In one of the embodiments, the first filter and the second filter are pivotally connected; the first filter rotates in a direction away from the shunt assembly under the external force in a first direction, and drives the second filter to separate from the shunt assembly under the external force in a second direction.

[0015] In one of the embodiments, the filter comprises a flow guide piece, which is arranged close to the sewage inlet.

[0016] In one of the embodiments, the first part further comprises a second passage section of the sewage suction passage, and the tank cover comprises a sewage discharge port and a third passage section of the sewage suction passage; the sewage in the second cavity can enter the first passage section, the second passage section and the third passage section in sequence through the flow passage, and flow out through the sewage discharge port.

[0017] In one of the embodiments, the sewage tank further comprises: a sewage inlet passage, which is in butt joint with the sewage inlet, so that the external sewage enters the sewage tank through the sewage inlet passage and the sewage inlet.

[0018] In one of the embodiments, the sewage tank further comprises a spraying assembly, the spraying assembly comprising a liquid inlet channel and a spraying water outlet, the spraying water outlet being located at the upper portion of the second portion.

[0019] In a second aspect, the present disclosure provides a cleaning system, comprising: a cleaning device comprising the sewage tank of any one of the embodiments of the first aspect; and a base station comprising a sewage collecting port; wherein, when the cleaning device is docked with the base station, the sewage outlet of the sewage tank is docked with the sewage collecting port, and the sewage in the sewage tank enters the base station through the sewage outlet and the sewage collecting port.

[0020] In one of the embodiments, the cleaning device further comprises a suction device and an air duct switching structure, the air duct switching structure having a first communication state and a second communication state; wherein, in the first communication state, the air duct switching structure communicates the suction device and the sewage tank, so as to create a negative pressure in the sewage tank, and external sewage enters the sewage tank under the action of the negative pressure; in the second communication state, the air duct switching structure communicates the suction device and the base station, so as to create a negative pressure in the base station, and the sewage in the sewage tank enters the base station through the sewage outlet and the sewage collecting port.

[0021] In one of the embodiments, the cleaning device has a first working state when cleaning a to-be-cleaned surface; in the first working state, the included angle between the body of the cleaning device and the ground is less than a preset angle, and the second cavity is away from the to-be-cleaned surface relative to the first cavity.

[0022] The sewage tank described above is provided with a shunt assembly, the shunt assembly comprising a separation portion, a sewage inlet, a flow-through port and a first channel segment of a sewage suction channel, the separation portion dividing the tank body of the sewage tank into a first cavity and a second cavity, the sewage flowing in from the sewage inlet entering the first cavity and then entering the second cavity through the flow-through port, so that the sewage tank can meet the use requirements of special scenarios, for example, in the flat-laying scenario of the cleaning device, the sewage in the first cavity can be prevented from entering the main fan after entering the second cavity; in addition, the sewage in the second cavity can enter the sewage suction channel through the flow-through port, so that the sewage tank can meet the automatic sewage discharge requirements. By providing a sewage tank that meets multiple requirements, the multifunctional setting of the cleaning system can be supported, and the functions of the cleaning system can be made more perfect.

[0023] The cleaning system has the suction device and the air duct switching structure on the cleaning equipment. Under the action of the air duct switching structure, the suction device of the cleaning equipment can meet the sewage suction requirement of the sewage tank of the cleaning equipment and can also meet the sewage discharge requirement of the base station. That is, the single suction device on the cleaning equipment can meet the sewage suction and discharge requirements, so that the structure of the cleaning system is simpler, the cost is lower, and the assembly and maintenance are more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0025] FIG. 1 is a schematic diagram of a cleaning system in an embodiment;

[0026] FIG. 2 is a schematic diagram of a sewage tank in an embodiment;

[0027] FIG. 3 is a schematic diagram of another view of the sewage tank in an embodiment;

[0028] FIG. 4 is a schematic diagram of the structure of a partial tank cover and a flow splitting assembly in an embodiment;

[0029] FIG. 5 is a schematic diagram of the structure of a partial tank cover and a flow splitting assembly in another embodiment;

[0030] FIG. 6 is a schematic diagram of a water flow path in a sewage discharge mode in an embodiment;

[0031] FIG. 7 is a schematic diagram of disassembly of the flow splitting assembly and a filter in an embodiment;

[0032] FIG. 8 is a schematic diagram of the structure of a partial tank cover and a flow splitting assembly in another embodiment;

[0033] FIG. 9 is a schematic diagram of a filter in an embodiment;

[0034] FIG. 10 is a schematic diagram of a cleaning system in a sewage suction mode in an embodiment provided with an air duct switching structure;

[0035] FIG. 11 is a schematic diagram of a cleaning system in a sewage discharge mode in an embodiment provided with an air duct switching structure.

[0036] Explanation of reference signs: 10, cleaning device; 20, base station; 210, base station body; 220, tray; 110, handle; 120, machine body; 130, floor brush assembly; 140, clean water tank; 150, sewage tank; 151, tank cover; 152, tank body; 1521, first cavity; 1522, second cavity; 153, shunt assembly; 1531, separation part; 1532, sewage inlet; 1533, flow-through port; 1534, first channel section; 1535, second channel section; 1536, third channel section; 1537, flow guide channel; 1538, first air flow channel; 1539, second air flow channel; 1540, support plate; 1541, first filter element; 1542, second filter element; 1543, cover body; 1544, lock catch structure; 1545, abutment; 1546, spray water outlet; 154, sewage outlet; 155, handle; 156, spray water inlet; 160, power assembly; 170, suction device; 180, air duct switching structure; 1501, first part; 1502, second part; 157, sewage suction channel; 158, filter element; 1581, flow guide element; 1530, sewage inlet channel; 159, spray assembly; 1591, liquid inlet channel; 201, sewage collection port. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present disclosure more obvious and easy to understand, the specific embodiments of the present disclosure are described in detail below in conjunction with the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present disclosure. However, the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present disclosure, so the present disclosure is not limited by the specific embodiments disclosed below.

[0038] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In the present disclosure, unless specifically defined and limited otherwise, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0040] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0041] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In the present application, unless otherwise specifically defined and limited, if there is a similar description of the first feature "on" or "under" the second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] It is to be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on the other element or intervening elements can also be present. In addition, it is to be noted that the term "comprising" or "including" when used in this specification, specifies the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used herein, the term "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms are used for explanation only and not to indicate an exclusive embodiment.

[0044] Embodiment 1

[0045] The embodiment provides a sewage tank applied to a cleaning device. The cleaning device can be a passive floor cleaning device (such as a scrubber), a dust collection device, an automatic floor cleaning device (such as a sweeper), a window cleaning machine, etc. Taking the scrubber as an example, as shown in FIG. 1, the cleaning device 10 includes a handle 110, a machine body 120, a floor brush assembly 130 pivotally connected to the machine body 110, etc. The machine body 110 can be provided with, but is not limited to, a clean water tank 140, a sewage tank 150, a power assembly 160, etc. The floor brush assembly 130 can be provided with a floor brush shell, a cleaning element, a floor brush motor, a water spraying assembly, etc. The cleaning element is used to clean a surface to be cleaned (such as a floor, a carpet, a window, etc.), such as a cloth turntable, a mopping roller brush, and a sweeping side brush. The power assembly 160 can include a power handle and a power shell, and the power shell can be provided with a battery pack, a suction device 170, a sound reduction structure, a heat dissipation structure, a shock absorption structure, etc. The suction device 170 can adopt a fan.

[0046] In one embodiment, as shown in FIGS. 2-8, the sewage tank 150 includes a tank cover 151, a tank body 152, a shunt assembly 153, and a sewage outlet 154. The suction device 170 is located above the sewage tank 150. When the suction device 170 is working, the gas in the sewage tank 150 enters the suction device 170, so that the sewage tank 150 is under negative pressure. The side where the sewage outlet 154 is located is the rear side, and the opposite side of the rear side is the front side. The side where the tank cover 151 is located is the upper side, and the side where the bottom of the sewage tank 150 is located is the lower side. The sewage outlet 154 allows the cleaning device 10 to have a sewage discharge mode, in which the sewage in the sewage tank 150 can be discharged to the outside of the sewage tank 150, such as to a base station 20 adapted to the cleaning device 10. The sewage outlet 154 can be arranged at an upper portion, a middle portion, a bottom portion, etc. of the sewage tank 150. The tank cover 151 and the tank body 152 can be detachably connected, so as to facilitate the user to manually clean the sewage tank 150; or can be fixedly connected.

[0047] The shunt assembly 153 is mounted at the lower part of the box cover 151, and can be fixedly connected or detachably connected between the shunt assembly 153 and the box cover 151. When the box cover 151 is mounted on the box body 152, the shunt assembly 153 is located in the box body 152. As shown in FIGS. 4 and 5, the shunt assembly 153 has a first part 1501 and a second part 1502, and a partition 1531 is formed between the first part 1501 and the second part 1502. The partition 1531 is in sealing contact with the inner wall of the box body 152, and divides the box body 152 into a first cavity 1521 and a second cavity 1522, as shown in FIG. 6.

[0048] The first part 1501 of the shunt assembly 153 is located in the first cavity 1521 and includes a sewage inlet 1532. The sewage inlet 1532 can be arranged side by side with the sewage suction channel 157. The cleaning device 10 is provided with a sewage inlet channel 1530, which can be arranged in the sewage tank 150 or adjacent to the sewage tank 150. One end of the sewage inlet channel 1530 is in communication with the sewage suction port of the brush assembly 130, and the other end is in butt joint with the sewage inlet 1532. Thus, the cleaning device 10 can have a sewage suction mode. In the sewage suction mode, the sewage tank 150 is under negative pressure, and the sewage flows into the first cavity 1521 of the sewage tank 150 through the sewage inlet channel 1530 and the sewage inlet under the action of the negative pressure.

[0049] The second part 1502 of the shunt assembly 153 is located in the second cavity 1522 of the sewage tank 150 and includes a flow-through port 1533 and a first channel segment 1534 of the sewage suction channel 157. The first cavity 1521 and the second cavity 1522 are in communication through the flow-through port 1533. After the sewage enters the first cavity 1521, it enters the second cavity 1522 through the flow-through port 1533. The first channel segment 1534 can be the starting segment of the sewage suction channel 157. One end of the sewage suction channel 157 is connected with the flow-through port 1533 through the first channel segment 1534, and the other end is connected with a sewage outlet 154 on the box body 152. When the cleaning device 10 is in a sewage discharge mode, the sewage in the second cavity 1522 enters the first channel segment 1534 through the flow-through port 1533, and then is discharged from the sewage outlet 154 to the outside of the sewage tank 150.

[0050] Further, as shown in FIG. 6, the first part 1501 further includes a second channel segment 1535 of the sewage suction channel 157, and the box cover 151 further includes a third channel segment 1536. The sewage in the second cavity 1522 can enter the first channel segment 1534, the second channel segment 1535 and the third channel segment 1536 in sequence through the flow-through port 1533, and then flow out through the sewage outlet 154. The first channel segment 1534, the second channel segment 1535 and the third channel segment 1536 can be integrally formed or separately arranged, and are in sealing butt joint between adjacent two channel segments.

[0051] Optionally, the first cavity 1521 of the sewage tank 150 is arranged close to the opening of the tank cover 151, and the second cavity 1522 is arranged away from the opening of the tank cover 151, and a sealing ring in a closed loop is formed between the partition 1531 and the inner wall of the tank 152. Under the action of the sealing ring, the sewage stored in the second cavity 1522 cannot reach the suction device 170 through the tank cover 151, avoiding the failure of the suction device 170 caused by liquid leakage, and prolonging the service life of the suction device 170.

[0052] In one embodiment, as shown in FIG. 7, the flow distribution assembly 153 further includes a flow guide channel 1537, which includes a first flow guide channel in the first part 1501 and a second flow guide channel (not shown in the figure) in the second part 1502, the first flow guide channel and the second flow guide channel are connected, and the flow passage 1533 is arranged close to the second flow guide channel. The sewage flowing into the sewage inlet 1532 enters the flow passage 1533 under the guidance of the flow guide channel 1537.

[0053] In one embodiment, the flow passage 1533 is arranged in the bottom of the second part 1502, close to the first part 1501. Optionally, the flow passage 1533 is arranged in the bottom of the second part 1502, at a position intersecting the vertical extension line of the first part 1501. In one example, the flow passage 1533 is arranged on the bottom rear edge of the second flow guide channel. With such an arrangement, on the one hand, the sewage in the first cavity 1521 can reach the flow passage 1533 in a straight path, shortening the flow path of the sewage; on the other hand, the sewage in the second cavity 1522 can directly enter the sewage pipe through the flow passage 1533, accelerating the sewage discharge efficiency. Optionally, the flow passage 1533 can be arranged in any shape such as rectangle, circle, ellipse, etc.

[0054] In one embodiment, as shown in FIG. 8, the flow distribution assembly 153 includes a first air flow channel 1538 and a second air flow channel 1539, the first air flow channel 1538 communicates the suction device 170 of the cleaning equipment 10 and the first cavity 1521, and the second air flow channel 1539 communicates the suction device 170 and the second cavity 1522. When the suction device 170 works, the suction force acts on the first cavity 1521 through the first air flow channel 1538, so that the first cavity 1521 is under negative pressure, and the second cavity 1522 is under negative pressure through the second air flow channel 1539.

[0055] Optionally, the cross-sectional area of the second airflow passage 1539 is greater than that of the first airflow passage 1538, so that the negative pressure generated in the second cavity 1522 per unit time is greater than that generated in the first cavity 1521. The sewage in the first cavity 1521 flows into the second cavity 1522 through the flow port 1533 under the driving of the negative pressure difference, thereby further reducing the retention rate of the sewage in the first cavity 1521. In addition, the negative pressure difference enables the sewage to be stably retained in the second cavity 1522, and also avoids failure of the suction device 170 due to liquid leakage, thereby prolonging the service life of the suction device 170.

[0056] In one embodiment, the shunt assembly 153 is provided with a support plate 1540 opposite the front wall of the sewage tank 150. The two sides of the support plate 1540 are connected with the partition 1531 and are in sealing contact with the inner wall of the sewage tank 150, thereby avoiding air leakage. The second airflow passage 1539 can be vertically, curved, or labyrinthine arranged on the support plate 1540.

[0057] Optionally, the support plate 1540 is located above the first passage segment 1534 of the sewage suction pipeline, and the support plate 1540, the first passage segment 1534, and the flow port 1533 are sequentially arranged from top to bottom.

[0058] In one embodiment, the shunt assembly 153 further comprises a filter 158. In the water flow path of the sewage suction mode, the filter 158 is located upstream of the flow port 1533 and is used for solid-liquid separation of the sewage flowing into the sewage inlet 1532, thereby avoiding blockage of the flow port 1533 by solid waste and causing abnormal operation of the cleaning device 10.

[0059] In the present embodiment, the filter 158 comprises a first filter 1541 and a second filter 1542. The first filter 1541 is located in the first flow channel, and the second filter 1542 is located in the second flow channel. The first filter 1541 is arranged around the sewage inlet 1532 and has a first filter portion (not shown in the figure) located at the rear side, and a plurality of filter holes are arranged on the first filter portion. The sewage entering through the sewage inlet 1532 is sprayed to the first filter portion under the action of suction force, and then flows into the flow port 1533 under the action of gravity and negative pressure difference, and enters the second cavity 1522. The second filter 1542 is used for solid-liquid separation of the sewage entering the second flow channel.

[0060] Further, the left and right sides of the first filter 1541 can also be provided with filter holes. By arranging the filter holes in multiple directions, the solid-liquid separation rate of the sewage can be improved, the solid waste can be dispersedly distributed, the accumulation of the solid waste can be avoided, and the possibility of blockage of the flow port 1533 can be reduced. In addition, by arranging the filter holes in multiple directions, the suction force of the sewage suction port can be prevented from being lost due to excessive solid waste blocking the filter holes, thereby affecting the sewage suction effect.

[0061] Further, in the front-rear direction, the gap between the first filter 1541 and the rear wall of the second flow channel is smaller than the gap between the second filter 1542 and the rear wall of the second flow channel, so that when the cleaning device 10 is sucking the sewage, the sewage filtered by the first filter 1541 can better flow into the space between the second filter 1542 and the second flow channel under the action of gravity, and then flow out from the flow port 1533 to the second cavity 1522 under the driving of the negative pressure difference.

[0062] Of course, in the front-rear direction, the gap between the first filter 1541 and the rear wall of the second flow channel can also be greater than or equal to the gap between the second filter 1542 and the rear wall of the second flow channel, and accordingly, the distance between the first filter 1541 and the inner wall of the first cavity 1521 of the sewage tank 150 is also increased. The structure makes the sewage not easy to spray to the inner wall of the first cavity 1521 of the sewage tank 150, which helps to ensure the cleanliness of the inner wall of the sewage tank 150.

[0063] Further, when the cleaning device 10 is sucking the sewage, part of the sewage cannot enter the flow port 1533 again after passing through the first filter 1541, but directly flows into the second flow channel. By providing the second filter 1542, the second filter 1542 can further ensure the solid-liquid separation effect of the sewage by performing solid-liquid separation on this part of the sewage.

[0064] Further, the filter 158 and the shunt assembly 130 can be enclosed to form a containing space for retaining solid waste.

[0065] Further, the filter 158 is provided with a flow guide 1581 near the sewage inlet 1532, as shown in FIG. 7, which is used to guide the sewage to flow to the first filter 1541.

[0066] In one embodiment, the second part 1502 of the shunt assembly 153 further comprises an openable cover 1543, which forms at least part of the rear wall of the second flow channel. The flow port 1533 can be arranged at the bottom of the cover 1543. A lock structure 1544 is arranged between the second part 1502 and the cover 1543, and the lock structure 1544 has an unlocking state and an opening state, so that the cover 1543 has an opening state and a closing state correspondingly. When the flow port 1533 is blocked, the cover 1543 can be opened by operating the lock structure 1544 to clean the flow port 1533, which is simple to operate.

[0067] In one embodiment, the cover 1543 is provided with an abutting piece 1545 on the side facing the inner wall of the box 152. When the shunt assembly 153 is installed in the sewage tank 150, the abutting piece 1545 has a pressing force with the inner wall of the box 152. When the locking structure 1544 is in the unlocked state, the cover 1543 is driven to the closed state by the pressing force, so as to avoid air and liquid leakage.

[0068] Further, the number of abutting pieces 1545 can be one or more, and the outer contour thereof can be in the shape of a circular arc, a triangle, etc.

[0069] Further, the abutting piece 1545 can be fixed on the cover 1543 or movably arranged on the cover 1543, such as a rotatable roller or a spring.

[0070] In one embodiment, the filter 158 is detachably arranged in the flow guide channel 1537. As shown in FIG. 9, the first filter 1541 and the second filter 1542 are pivotally connected. The first filter 1541 rotates in the direction away from the shunt assembly 153 under the external force in the first direction, and the second filter 1542 is separated from the shunt assembly 153 under the external force in the second direction. The first direction can be the backward direction, and the second direction can be the upward direction. In this way, the first filter 1541 and the second filter 1542 can be quickly integrated and detached, and the operation is simple, which facilitates the storage and cleaning of the first filter 1541 and the second filter 1542.

[0071] In one embodiment, the sewage tank 150 further comprises a spraying assembly 159. As shown in FIG. 4, the spraying assembly 159 comprises a spraying water inlet 156, a liquid inlet channel 1591 and a spraying water outlet 1546. One end of the liquid inlet channel 1591 is connected to an external water source through the spraying water inlet 156, and the other end is connected to the spraying water outlet 1546. The external water source can be the clean water tank 140 or a water storage tank on the base station 20. The spraying water outlet 1546 is located at the upper part of the second part 1502, so as to spray water downward and clean the inner wall of the second cavity 1522. Correspondingly, the spraying assembly 159 can also be arranged on the first part 1501 to clean the inner wall of the first cavity 1521, which will not be described in detail here.

[0072] Further, the number of spraying water outlets 1546 can be one or more, and the spraying water outlet 1546 can spray water in a rotating manner to improve the contact degree of water with the inner wall of the second cavity 1522.

[0073] Further, the spray water outlet 1546 can also be arranged at the bottom of the second cavity 1522 of the sewage tank 150 to spray water upward to the inner wall of the sewage tank, so that the water flows downward along the inner wall by gravity after being sprayed to the inner wall, thereby achieving secondary cleaning of the inner wall of the sewage tank.

[0074] In an embodiment, the outer wall of the tank body 152 can also be provided with a handle 155. The handle 155 can be pivotally arranged on the tank body 152 by a torsion spring, a hinge or the like, and has an unfolded state and a folded state. The handle 155 is in an unfolded state when in use, so that the user can hold the sewage tank 150 by the handle. When not in use, the handle 155 can be in a folded state, thereby reducing the occupied space of the cleaning device 10 and the probability of collision with the external environment.

[0075] In an embodiment, the sewage tank 150 can be provided with a liquid fullness detection mechanism. When the sewage tank 150 is full of liquid, the liquid fullness detection mechanism can send a prompt information.

[0076] Embodiment 2

[0077] The cleaning system can be a passive floor cleaning system (such as a scrubber), a dust collector, an automatic floor cleaning system (such as a sweeper), a window cleaner, etc. As shown in FIG. 1, taking a scrubber as an example, the cleaning system includes a cleaning device 10 and a base station 20. The cleaning device 10 includes a handle 110, a machine body 120, a floor brush assembly 130 pivotally connected to the machine body 120, etc. The machine body 110 can be provided with, but is not limited to, a clean water tank 140, a sewage tank 150, and a power assembly 160. The floor brush assembly 130 can be provided with a floor brush housing, a cleaning element, a floor brush motor, a water spraying assembly, etc. The cleaning element is used to clean the surface to be cleaned (such as the ground, carpet, window, etc.), such as a cloth turntable, a mopping roller brush, and a sweeping side brush. The power assembly 160 can include a power handle, a power housing, etc. The power housing can be provided with a battery pack, a suction device 170, a sound reduction structure, a heat dissipation structure, a shock absorption structure, etc. The suction device 170 can adopt a fan. The sewage tank 150 in the present embodiment is the sewage tank 150 of any one of the embodiments in Embodiment 1. The sewage outlet 154 is arranged on the upper part of the rear side of the sewage tank 150, and a sewage cover (not shown in the figure) is pivotally connected to the sewage outlet 154. In one example, the sewage outlet 154 is arranged on the tank cover 151.

[0078] Taking the default travel direction of the cleaning device 10 as the front side and the side facing the user as the rear side, the power assembly 160 and the sewage tank 150 are located on the same side of the machine body 110, preferably on the rear side of the machine body 120, and the clean water tank 140 is located on the front side of the machine body 120. In the vertical direction, the power assembly 160 is located above the sewage tank 150. The first cavity 1521 of the sewage tank 150 is closer to the power assembly 160 than the second cavity 1522.

[0079] The base station 20 can be provided with a tray 220 and a base station body 210 extending in the height direction. The base station 20 can be provided with a base station water replenishment assembly, a base station sewage discharge assembly, a charging assembly, etc. The base station 20 is also provided with a sewage collection port 201, as shown in FIG. 1. The base station sewage discharge assembly can include a sewage collection tank and the sewage collection port 201. When the cleaning device 10 docks with the base station 20, the sewage discharge cover at the sewage discharge port 154 is opened, and the sewage discharge port 154 and the sewage collection port 201 are docked. When the cleaning device 10 discharges sewage, the sewage enters the sewage collection tank through the sewage discharge port 154 and the sewage collection port 201.

[0080] Optionally, the sewage collection tank can be connected with an automatic sewer structure. When the sewage enters the sewage collection tank, the automatic sewer structure is opened, and the sewage is automatically discharged to the municipal pipeline, thereby realizing fully automatic treatment of the sewage without the need for manual treatment of the sewage by the user. Of course, the base station sewage discharge assembly can also not include the sewage collection tank, but directly connect the sewage collection port 201 with the automatic sewer structure, so that the sewage is discharged in real time through the sewage collection port 201 and the automatic sewer structure to the municipal pipeline.

[0081] In one embodiment, the cleaning device 10 has a first working state and a second working state when cleaning the surface to be cleaned. In the first working state, the included angle between the machine body 120 of the cleaning device 10 and the ground is less than a preset angle, which can be a small angle such as 5°, 10°, etc. In the second working state, the included angle between the machine body 110 of the cleaning device 10 and the ground is greater than or equal to the preset angle. In the first working state, the second cavity 1522 is farther away from the surface to be cleaned than the first cavity 1521. The sewage is stored in the second cavity 1522, and under the action of the negative pressure difference and the separation part 1531, the sewage will not enter the suction device 170, thereby avoiding the flow of liquid to the suction device 170, causing the suction device 170 to malfunction.

[0082] In one embodiment, as shown in FIGS. 10 and 11, the cleaning device 10 further includes an air duct switching structure 180 and a first air duct port provided on the outer shell of the cleaning device 10. The air duct switching structure 180 can be located between the suction device 170 and the sewage tank 150. By adopting such a position distribution, the fluid path can be shortened, and the overall structure of the cleaning device 10 can be simplified. The air duct switching structure 180 has a first air inlet, a second air inlet, an air outlet, and a switching piece. The first air inlet is docked with the sewage tank 150, the second air inlet is docked with the first air duct port, and the air outlet is docked with the air inlet end of the suction device 170. The switching piece is used to change the communication state between the first air inlet and the air outlet, and between the second air inlet and the air outlet. For example, the switching piece can be an electromagnetic valve, a gear structure, etc. The outer shell of the base station 20 is provided with a second air duct port, which communicates with the base station sewage discharge assembly. When the cleaning device 10 docks with the base station 20, the first air duct port and the second air duct port are docked.

[0083] The air duct switching structure 180 has a first communication state and a second communication state. As shown in FIG. 10, when the cleaning device 10 performs the sewage suction mode, the air duct switching structure 180 presents the first communication state, the switching piece opens the flow path between the first air inlet and the air outlet, and closes the flow path between the second air inlet and the air outlet, so that the suction device 170 and the sewage tank 150 are in fluid communication. The suction force of the suction device 170 acts on the sewage tank 150, and the sewage tank 150 is under negative pressure, and the sewage is sucked into the sewage tank 150.

[0084] As shown in FIG. 11, when the cleaning device 10 performs the sewage discharge mode, the air duct switching structure 180 presents the second communication state, the switching piece opens the flow path between the second air inlet and the air outlet, and closes the flow path between the first air inlet and the air outlet, so that the suction device 170 and the base station 20 are in fluid communication through the first air duct opening and the second air duct opening. The suction force of the suction device 170 acts on the base station sewage assembly, so that the base station sewage assembly is under negative pressure, and the sewage in the sewage tank 150 enters the base station sewage assembly through the sewage discharge opening 154 and the sewage collection opening 201.

[0085] In an embodiment, the sewage tank 150 can also be self-cleaned when the cleaning device 10 is docked with the base station 20. In a specific implementation, when self-cleaning, the air duct switching structure 180 switches between the first communication state and the second communication state, which can be periodic and regular switching, or irregular switching. When presenting the first communication state, the cleaning device 10 enters the sewage suction mode, the water spraying structure (not shown in the figure) of the brush assembly 130 sprays water, which is sucked into the sewage tank 150 under the action of the suction force, and is sprayed to the inner wall of the first cavity 1521 through the first filter 1541, to self-clean the inner wall of the first cavity 1521. When the air duct switching structure 180 switches from the first communication state to the second communication state, the water forms a tidal surge to self-clean the accommodation space between the filter 158 and the shunt assembly 130, and the inner wall of the shunt assembly 130, and at the same time, the cleaning device 10 enters the sewage discharge mode, and the water is sucked into the base station 20 under the action of the negative pressure of the base station 20, thereby realizing self-cleaning of the filter 158 and the shunt assembly 130.

[0086] In an embodiment, the air duct switching structure 180 can also include a position sensor. When the cleaning device 10 performs the sewage suction mode, if the controller on the cleaning device 10 determines that the air duct switching structure 180 is not currently in the first communication state based on the detection signal of the position sensor, the switching piece is controlled to work, so that the air duct switching structure 180 presents the first communication state.

[0087] Correspondingly, when the cleaning device 10 performs the sewage discharge mode, if the controller determines that the air duct switching structure 180 is not currently in the second communication state based on the detection signal of the position sensor, the switching piece is controlled to work, so that the air duct switching structure 180 presents the second communication state. In the embodiment, by arranging the position sensor, the air duct switching structure 180 can be fully automatically controlled based on the circuit system of the position sensor and the controller, so as to improve the intelligent degree of the cleaning device 10.

[0088] The cleaning system described above is provided with the air duct switching structure 180 on the cleaning device 10. Under the action of the air duct switching structure 180, the suction device 170 of the cleaning device 10 can not only meet the sewage suction demand of the cleaning device 10 to suck the external sewage into the sewage tank 150, but also meet the sewage discharge demand of the base station 20 to suck the sewage in the sewage tank 150 to the base station 20. That is, based on the single suction device 170 on the cleaning device 10, the sewage suction and sewage discharge demands can be realized, so that the structure of the cleaning system is simpler, the cost is lower, and the assembly and maintenance are more convenient.

[0089] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the disclosure.

[0090] The above embodiments only express several implementation manners of the disclosure, and the description is more specific and detailed, but it should not be understood as the limitation of the patent scope of the disclosure. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the disclosure, several modifications and improvements can be made, which belong to the protection scope of the disclosure. Therefore, the protection scope of the disclosure should be subject to the appended claims.

Claims

1. A sump tank (150) characterized by, The sewage tank (150) comprises: a tank cover (151); a tank body (152); and a flow distribution assembly (153) connected with the tank cover (151) and having a first part (1501) and a second part (1502), a partition (1531) being formed between the first part (1501) and the second part (1502) and being in sealed contact with the tank body (152) to divide the tank body (152) into a first cavity (1521) and a second cavity (1522); wherein the first part (1501) is located in the first cavity (1521) and comprises an inlet (1532); the second part (1502) is located in the second cavity (1522) and comprises a flow-through opening (1533) and a first channel segment (1534) of a sewage suction channel (157); external sewage can flow into the first cavity (1521) through the inlet (1532) and enter the second cavity (1522) through the flow-through opening (1533), and sewage in the second cavity (1522) can enter the first channel segment (1534) through the flow-through opening (1533). The flow-through opening (1533) is arranged in the bottom of the second part (1502) and is located close to the first part (1501).

2. The sump tank (150) according to claim 1, characterized in that The flow distribution assembly (153) comprises:

3. The bilge tank (150) according to claim 1 or 2, characterized in that a first air flow channel (1538) in communication with the first cavity (1521); a second air flow channel (1539) in communication with the second cavity (1522); when the sewage tank (150) is under negative pressure, the second air flow channel (1539) causes the negative pressure in the second cavity (1522) to be greater than the negative pressure in the first cavity (1521), thereby driving the sewage in the first cavity (1521) to enter the second cavity (1522) through the flow-through opening (1533). The flow distribution assembly (153) comprises:

4. The sump tank (150) according to any one of claims 1-3, characterized in that, a filter (158) comprising a first filter (1541) located in the first cavity (1521) and a second filter (1542) located in the second cavity (1522) for filtering sewage flowing into the inlet (1532). The second part (1502) comprises an openable cover (1543) having a flow guide channel (1537) between the cover (1543) and the second filter (1542); 5. The sump tank (150) according to claim 4, characterized in that sewage filtered by the first filter (1541) reaches the flow-through opening (1533) through the flow guide channel (1537) and enters the second cavity (1522). A lock structure (1544) is arranged between the second part (1502) and the cover (1543), the lock structure (1544) has an unlocking state and an open state, and the cover (1543) correspondingly has an open state and a closed state.

6. The sump tank (150) according to claim 5, characterized in that ​ 7. The sump tank (150) according to claim 6, characterized in that The cover (1543) is provided with an abutting piece (1545); when the shunt assembly (153) is installed into the sewage tank (150), the abutting piece (1545) and the inner wall of the tank body (152) have extrusion force, which is used to drive the cover (1543) to be in the closed state by extrusion force when the lock catch structure (1544) is in the unlocked state.

8. The sump tank (150) according to any one of claims 4-7, characterized in that, The first filter (1541) and the second filter (1542) are pivotally connected; The first filter (1541) rotates in the direction away from the shunt assembly (153) under the external force in the first direction, and drives the second filter (1542) to separate from the shunt assembly (153) under the external force in the second direction.

9. The sump tank (150) according to any one of claims 4-8, characterized in that, The filter (158) comprises a flow guide (1581) arranged close to the sewage inlet (1532).

10. The sump tank (150) according to any one of claims 1-9, characterized in that, The first part (1501) further comprises a second channel segment (1535) of the sewage suction channel (157), and the tank cover (151) comprises a sewage outlet (154) and a third channel segment (1536) of the sewage suction channel (157). The sewage in the second cavity (1522) can enter the first channel segment (1534), the second channel segment (1535) and the third channel segment (1536) in sequence through the flow passage (1533), and flow out through the sewage outlet (154).

11. The sump tank (150) according to any one of claims 1-10, characterized in that, The sewage tank (150) further comprises: A sewage inlet channel (1530) that is in abutment with the sewage inlet (1532), so that external sewage enters the sewage tank (150) through the sewage inlet channel (1530) and the sewage inlet (1532).

12. The sump tank (150) according to any one of claims 1-11, characterized in that, The sewage tank (150) further comprises: A spraying assembly (159) comprising a liquid inlet channel (1591) and a spraying water outlet (1546), wherein the spraying water outlet (1546) is located at the upper portion of the second part (1502).

13. A cleaning system characterized by, The application further provides: A cleaning device (10) comprising the sewage tank (150) according to any one of claims 1-12; And A base station (20) comprising a sewage collection port (201); When the cleaning device (10) is in abutment with the base station (20), the sewage outlet (154) of the sewage tank (150) is in abutment with the sewage collection port (201), and the sewage in the sewage tank (150) enters the base station (20) through the sewage outlet (154) and the sewage collection port (201).

14. The cleaning system of claim 13, wherein, The cleaning device (10) further comprises: A suction device (170); and An air duct switching structure (180) having a first communication state and a second communication state; The air duct switching structure (180) has a first communication state and a second communication state. In the first communication state, the air duct switching structure (180) communicates the suction device (170) and the sewage tank (150), so that the sewage tank (150) is under negative pressure, and external sewage enters the sewage tank (150) under the action of negative pressure. In the second communication state, the air duct switching structure (180) communicates the suction device (170) and the base station (20), so that the base station (20) is under negative pressure, and the sewage in the sewage tank (150) enters the base station (20) through the sewage discharge port (154) and the sewage collection port (201).

15. The cleaning system according to claim 13 or 14, characterized in that The cleaning equipment (10) has a first working state when cleaning the to-be-cleaned surface; In the first working state, the included angle between the machine body (120) of the cleaning equipment (10) and the ground is less than a preset angle, and the second cavity (1522) is away from the first cavity (1521) relative to the to-be-cleaned surface.

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