Wastewater tank and cleaning apparatus

Abstract

Disclosed in the present application are a wastewater tank and a cleaning apparatus. A wastewater tank body is provided with a solid-liquid separation cavity, a waste-liquid containing cavity, a first suction channel and a second suction channel, wherein an inlet of the first suction channel is in communication with the waste-liquid containing cavity; an inlet of the second suction channel is in communication with the solid-liquid separation cavity; an air output filter is arranged in the second suction channel; and an outlet of the first suction channel is located in the second suction channel and passes through the air output filter, or the outlet of the first suction channel is located on one side of the periphery of the second suction channel, or the outlet of the first suction channel is located on one side of the periphery of the air output filter.

Description

Sewage tanks and cleaning equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application with application number 202311129306.2, filed with the State Intellectual Property Office of China on September 1, 2023, entitled “Control method for cleaning equipment, cleaning equipment and computer-readable storage medium”, and the Chinese patent application with application number 202311483360.7, filed with the State Intellectual Property Office of China on November 8, 2023, entitled “Sewage tank and cleaning equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of cleaning equipment, and in particular to a sewage tank and cleaning equipment. Background Art

[0004] The surface cleaning device can clean the surface to be cleaned, such as the floor, where the surface to be cleaned can be a hard surface or a soft surface. The surface cleaning device can clean the surface to be cleaned based on a cleaning liquid (clean water, clean water mixed with a detergent, etc.). When the operator uses the surface cleaning device to clean the surface to be cleaned, the surface cleaning device is generally in an upright position or a working position slightly tilted relative to the upright position. The above working position of the surface cleaning device cannot meet the needs of some cleaning scenarios. For example, when the surface cleaning device needs to be used to clean the inner area of ​​the bottom of the sofa, the surface cleaning device needs to be tilted significantly relative to the upright position, or even lying flat.

[0005] In the related art, if a surface cleaning device is used to perform a cleaning operation in a significantly tilted working posture or even a lying posture, the working posture of the surface cleaning device will change significantly during the cleaning operation, which will cause the posture of the recovery storage part of the surface cleaning device to change significantly. Since the recovery storage part stores recovered liquid and recovered solid, and some recovery storage parts may also perform gas-liquid separation operations, the significant change in the posture of the recovery storage part will cause the recovered liquid stored in the recovery storage part to surge, and even the recovered liquid may be easily sucked into the suction component, causing the suction component to fail, and then causing the recovered liquid to flow back into the suction component, seriously affecting the use of the suction component and even shortening the service life of the suction component.

[0006] Public content

[0007] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a sewage tank that can enable a suction channel to borrow the vertical space occupied by the air outlet filter to shorten its overall path, thereby reducing the loss of suction force.

[0008] The present application further proposes a cleaning device.

[0009] According to the first aspect of the present application, the sewage tank includes: a sewage tank body, the sewage tank body having a solid-liquid separation chamber, a sewage holding chamber, a first suction channel and a second suction channel, the solid-liquid separation chamber and the sewage holding chamber are connected, the inlet of the first suction channel is connected to the sewage holding chamber, and the inlet of the second suction channel is connected to the solid-liquid separation chamber; a suction component, the suction component provides negative pressure airflow for the first suction channel and the second suction channel; and an air outlet filter, the air outlet filter is arranged in the second suction channel; the outlet airflow of the first suction channel and the outlet airflow of the second suction channel converge at the suction component, or the outlet airflow of the first suction channel converges to the second suction channel and then flows to the suction component together with the airflow in the second suction channel, or the outlet airflow of the second suction channel converges to the first suction channel and then flows to the suction component together with the airflow in the first suction channel.

[0010] Therefore, through such an arrangement, the first suction channel can borrow the vertical space occupied by the air outlet filter in the second suction channel to make its overall path shorter, thereby reducing the loss of suction force, facilitating the rapid entry of dirty liquid into the dirty liquid holding chamber, and thus avoiding the problem of dirty liquid easily entering the unexpected structure inside the cleaning equipment and causing failure.

[0011] In some examples of the present application, the outlet of the first suction channel is located in the second suction channel and passes through the air outlet filter, or the outlet of the first suction channel is located on an adjacent side of the second suction channel, or

[0012] The outlet of the first suction channel is located on a side adjacent to the air outlet filter.

[0013] In some examples of the present application, a portion of the first suction channel is located on the outer circumference of the solid-liquid separation chamber and a portion of the inlet is connected to the dirty liquid holding chamber; another portion of the first suction channel is located in the second suction channel and passes through the air outlet filter, or another portion of the first suction channel is located on an adjacent side of the second suction channel.

[0014] In some examples of the present application, the sewage tank includes: a tank body; a partition, which is arranged in the tank body, and the partition divides the space in the tank body into the solid-liquid separation chamber located above and the sewage holding chamber located below; a tank cover, which is arranged above the tank body; wherein at least one of the tank body and the partition forms the part of the first suction channel, and the tank cover forms the second suction channel and the other part of the first suction channel.

[0015] In some examples of the present application, the partition includes: a lower partition, which divides the space in the box body into the solid-liquid separation chamber located above and the dirty liquid holding chamber located below; a side partition, which is connected to the side edge of the lower partition and extends upward, and at least a portion of the first suction channel is formed between the side partition and the side wall on the outer side of the box body.

[0016] In some examples of the present application, a first flow port is provided on the side partition, and a second flow port is provided on the box cover, the first flow port is connected to the portion of the first suction channel, the second flow port is connected to the other portion of the first suction channel, and the first flow port and the second flow port are arranged opposite to each other and are connected.

[0017] In some examples of the present application, a water retaining structure located in the first suction channel is provided on the side partition, and the water retaining structure includes: a plurality of water retaining plates, the plurality of water retaining plates are arranged at intervals in the suction direction, each of the water retaining plates is provided with a vent, and adjacent vents are staggered, and the first flow port is located downstream of the water retaining structure.

[0018] In some examples of the present application, the box cover includes: an outer cover; an inner channel member, wherein the inner channel member is arranged inside the outer cover, the second suction channel is formed between the inner channel member and the outer cover, and the inner channel member forms the other part of the first suction channel.

[0019] In some examples of the present application, a water retaining structure is provided in the portion of the first suction channel.

[0020] In some examples of the present application, the water retaining structure includes: a plurality of water retaining plates, the plurality of water retaining plates are arranged at intervals in the suction direction, each of the water retaining plates is provided with a vent, and adjacent vents are staggered.

[0021] In some examples of the present application, the water retaining structure includes an "S-shaped" or "inverted S-shaped" water retaining passage.

[0022] In some examples of the present application, a sewage suction pipe is provided in the sewage tank body, the outlet of the sewage suction pipe is located in the solid-liquid separation chamber, and the solid-liquid separation chamber is formed with an air outlet chamber on the side away from the outlet of the sewage suction pipe, and the air outlet chamber is connected to the inlet of the second suction channel; the solid-liquid separation chamber is provided with a baffle between the outlet of the sewage suction pipe and the air outlet chamber.

[0023] According to the second aspect of the present application, the sewage tank includes: a tank body, the tank body having a solid-liquid separation chamber and a sewage holding chamber, the solid-liquid separation chamber and the sewage holding chamber being communicated; a tank cover, the tank cover is arranged above the tank body, the tank cover is formed with a third suction channel and a fourth suction channel, the inlet of the third suction channel is communicated with the solid-liquid separation chamber, and the fourth suction channel is communicated with the sewage holding chamber; an air outlet filter, the air outlet filter is arranged in the third suction channel; wherein the fourth suction channel is located in the third suction channel and passes through the air outlet filter, or the fourth suction channel is located on the outer circumference of the third suction channel.

[0024] Therefore, through such an arrangement, the fourth suction channel can borrow the vertical space occupied by the air outlet filter in the third suction channel to make its overall path shorter, thereby reducing the loss of suction force, facilitating the rapid entry of dirty liquid into the dirty liquid holding chamber, and thus avoiding the problem of dirty liquid easily entering the unexpected structure inside the cleaning equipment and causing failure.

[0025] The cleaning equipment according to the third aspect of the present application includes: a sewage tank according to any one of the above embodiments.

[0026] The cleaning equipment according to the fourth aspect of the present application includes: a solid-liquid separation chamber, a dirty liquid holding chamber, a fifth suction channel, a sixth suction channel and a seventh suction channel, the solid-liquid separation chamber and the dirty liquid holding chamber are connected, the inlet of the fifth suction channel is connected to the solid-liquid separation chamber, the inlet of the sixth suction channel is connected to the dirty liquid holding chamber, and the inlet of the seventh suction channel is connected to the outlet of the sixth suction channel; a suction component, the suction component is connected to the outlet of the fifth suction channel and the outlet of the seventh suction channel; wherein the seventh suction channel is located in the fifth suction channel, or the seventh suction channel is located on the outer circumference of the fifth suction channel.

[0027] In some examples of the present application, the sewage tank further has an eighth suction channel, the eighth suction channel is connected between the outlet of the sixth suction channel and the inlet of the seventh suction channel, and a water retaining structure is provided in the eighth suction channel.

[0028] In some examples of the present application, the water retaining structure includes: a plurality of water retaining plates, the plurality of water retaining plates are arranged at intervals in the suction direction, each of the water retaining plates is provided with a vent, and adjacent vents are staggered.

[0029] In some examples of the present application, the water retaining structure includes an "S-shaped" or "inverted S-shaped" water retaining passage.

[0030] According to the fifth aspect of the present application, a cleaning device includes a solid-liquid separation chamber, a dirty liquid holding chamber, a first suction channel, a second suction channel and a suction assembly, the solid-liquid separation chamber and the dirty liquid holding chamber are connected, the inlet of the first suction channel is connected to the dirty liquid holding chamber, the inlet of the second suction channel is connected to the solid-liquid separation chamber, and the outlet of the first suction channel and the outlet of the second suction channel are both connected to the suction assembly; at least part of the first suction channel is located in the second suction channel, or at least part of the first suction channel is located on the outer circumference of the second suction channel.

[0031] In some examples of the present application, a water retaining structure is provided in the first suction channel for preventing liquid from flowing along the first suction channel.

[0032] In some examples of the present application, the water retaining structure includes: a plurality of water retaining plates, the plurality of water retaining plates are arranged at intervals in the suction direction, each of the water retaining plates is provided with a vent, and adjacent vents are staggered.

[0033] In some examples of the present application, the water retaining structure includes an "S-shaped" or "inverted S-shaped" water retaining passage.

[0034] According to the sixth aspect of the present application, the cleaning equipment includes a sewage tank, which includes a tank body, a tank cover, and a solid-liquid separation chamber and a dirty liquid holding chamber formed therein; a first suction channel, the inlet of the first suction channel is connected to the dirty liquid holding chamber; a second suction channel, the inlet of the second suction channel is connected to the solid-liquid separation chamber; and a suction component, the outlets of the first suction channel and the second suction channel are connected to the suction component, and the first suction channel and the second suction channel are at least partially located in the tank cover.

[0035] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] FIG1 is a schematic structural diagram of a cleaning device according to an embodiment of the present application;

[0038] FIG2 is a partial exploded view of a sewage tank according to an embodiment of the present application;

[0039] FIG3 is a schematic structural diagram of a sewage tank according to an embodiment of the present application;

[0040] FIG4 is a front view of a sewage tank according to an embodiment of the present application;

[0041] FIG5 is a cross-sectional view taken along the AA direction in FIG4 ;

[0042] FIG6 is another partial structural schematic diagram of a sewage tank according to an embodiment of the present application;

[0043] FIG7 is a schematic diagram of air suction flow according to an embodiment of the present application;

[0044] FIG8 is another schematic diagram of air suction flow according to an embodiment of the present application;

[0045] FIG9 is a schematic structural diagram of a water retaining structure according to an embodiment of the present application.

[0046] FIG10 is a schematic structural diagram of a filter according to an embodiment of the present application;

[0047] FIG11 is a schematic structural diagram of an inner channel member according to an embodiment of the present application;

[0048] FIG12 is another schematic structural diagram of an inner channel member according to an embodiment of the present application;

[0049] FIG13 is another structural schematic diagram of the inner channel member according to an embodiment of the present application.

[0050] Reference numerals:

[0051] 100. Sewage tank; 200. Cleaning equipment;

[0052] 10. Solid-liquid separation chamber; 11. Drain hole; 12. Air outlet chamber; 13. Baffle; 20. Dirt liquid holding chamber;

[0053] 30. First suction channel; 31. Water retaining structure; 311. Water retaining plate; 3111. Ventilation port; 40. Filter;

[0054] 41. Filter hole; 42. Avoidance hole; 50. Sewage suction pipe; 60. Second suction channel; 71. Box;

[0055] 72, partition; 721, lower partition; 722, side partition; 7221, first flow port; 73, box cover;

[0056] 731. Second flow port; 732. Outer cover; 733. Inner channel member; 80. Suction assembly; 90. Air outlet filter. DETAILED DESCRIPTION

[0057] The following describes in detail embodiments of the present application, and the embodiments described with reference to the accompanying drawings are exemplary.

[0058] The sewage tank 100 according to an embodiment of the present application is described below with reference to FIG. 1 to FIG. 13 , which enables the suction channel to utilize the vertical space occupied by the air outlet filter 90 to shorten its overall path, thereby reducing the loss of suction force.

[0059] As shown in Figures 1-13, the present embodiment provides a sewage tank 100 that allows the suction channel for solid-liquid separation to utilize the vertical space occupied by the air outlet filter 90, shortening its overall path, thereby reducing suction loss and improving suction efficiency. The sewage tank 100 can adopt the corresponding structure and shape of sewage tanks 100 configured for various cleaning devices 200, such as handheld vacuum cleaners, horizontal vacuum cleaners, upright vacuum cleaners, and barrel vacuum cleaners, so long as it can provide suction to draw in dust and garbage. This embodiment of the present application is not limited to this.

[0060] As shown in Figures 1-6 and 8 , a sewage tank 100 according to an embodiment of the first aspect of the present application includes a sewage tank body and an outlet filter 90. The sewage tank body protects and supports its internal structure and constitutes the external structure of the sewage tank 100. The outlet filter 90 allows air to pass through but is designed to filter out smaller dust particles. For example, the outlet filter 90 can be a HEPA filter, which has the characteristics of allowing air to pass, a large dust holding capacity, and high filtration accuracy for 0.1 micron and 0.3 micron filters.

[0061] Specifically, the sewage tank body has a solid-liquid separation chamber 10, a sewage holding chamber 20, a first suction channel 30 and a second suction channel 60. The solid-liquid separation chamber 10 is connected to the sewage holding chamber 20, the inlet of the first suction channel 30 is connected to the sewage holding chamber 20, and the inlet of the second suction channel 60 is connected to the solid-liquid separation chamber 10. The air outlet filter 90 is arranged in the second suction channel 60; the outlet airflow of the first suction channel 30 and the outlet airflow of the second suction channel 60 converge at the suction component, or the outlet airflow of the first suction channel 30 converges to the second suction channel 60 and then flows to the suction component together with the airflow in the second suction channel 60, or the outlet airflow of the second suction channel 60 converges to the first suction channel 30 and then flows to the suction component together with the airflow in the first suction channel 30.

[0062] The outlet of the first suction channel 30 is located within the second suction channel 60 and passes through the air outlet filter 90, or the outlet of the first suction channel 30 is located on the outer periphery of the second suction channel 60, or the outlet of the first suction channel 30 is located on the outer periphery of the air outlet filter 90. In one embodiment, the outer periphery refers to an adjacent side. The air outlet filter 90 includes filter cotton (not shown) and an outer frame (not shown). The first suction channel 30 can at least partially pass through the filter cotton or the outer frame or be located adjacent to the outer frame.

[0063] Among them, a portion of the first suction channel 30 is located on the outer side of the solid-liquid separation chamber 10 and a portion of the inlet is connected to the dirty liquid holding chamber 20; another portion of the first suction channel 30 is located in the second suction channel 60 and passes through the air outlet filter 90, or another portion of the first suction channel 30 is located on the adjacent side of the second suction channel 60.

[0064] Specifically, after the dirt is sucked from the cleaning work surface into the solid-liquid separation chamber 10, the first suction channel 30 draws gas from the dirty liquid holding chamber 20, creating a negative pressure in the dirty liquid holding chamber 20. The liquid in the dirt in the solid-liquid separation chamber 10, under the negative pressure from the connection between the solid-liquid separation chamber 10 and the dirty liquid holding chamber 20, also flows from the solid-liquid separation chamber 10 into the dirty liquid holding chamber 20, thereby achieving a rapid and effective solid-liquid separation effect. The second suction channel 60 communicates with the solid-liquid separation chamber 10, thereby enhancing the suction force of the solid-liquid separation chamber 10 on the dirt on the cleaning work surface, thereby facilitating the pre-collection of the dirt in the solid-liquid separation chamber 10. This arrangement utilizes the suction force of a single suction assembly 20 to, on the one hand, achieve conventional dirt collection, and, on the other hand, provide suction force to the sewage tank 10, thereby preventing water from being sucked into the suction assembly 20 when the cleaning device is lying down at a certain angle for operation.

[0065] Among them, an air outlet filter 90 is provided in the second suction channel 60, so that on the basis of quickly and effectively separating the solid and liquid in the solid-liquid separation chamber 10 in the first suction channel 30, the tiny dust in the gas can be further filtered to prevent the dust from entering the unwanted structure inside the cleaning equipment 200 and causing malfunction.

[0066] For example, the outlet of the first suction channel 30 is located within the second suction channel 60 and passes through the air outlet filter 90. This improves the positional stability and concealment of the first suction channel 30. It also prevents the first suction channel 30 from excessively occupying the internal space of the sewage tank body, making the sewage tank 100 more compact and improving its layout rationality. Furthermore, the overall path of the first suction channel 30 is shortened in this manner, which reduces the loss of suction force and improves the suction effect, thereby facilitating the rapid entry of waste liquid into the waste liquid holding chamber 20 and preventing undesirable damage to the internal structures of the cleaning device 200.

[0067] For another example, the outlet of the first suction channel 30 is located on the outer circumference of the second suction channel 60, which can effectively use the vertical space occupied by the air outlet filter 90 to make its overall path shorter, thereby reducing the loss of suction force, which is conducive to the rapid entry of dirty liquid into the dirty liquid holding chamber 20, thereby avoiding the problem that dirty liquid easily enters the unexpected structure inside the cleaning device 200 and causes failure; at the same time, it is also beneficial to reduce the number of components used to construct the first suction channel 30, which is beneficial to reducing the weight and cost of the cleaning device 200.

[0068] For another example, the outlet of the first suction channel 30 is located on the outer side of the air outlet filter 90, which can effectively borrow the vertical space occupied by the air outlet filter 90 to make its overall path shorter, thereby reducing the loss of suction force, which is conducive to the rapid entry of dirty liquid into the dirty liquid holding chamber 20, thereby avoiding the problem that dirty liquid easily enters the unexpected structure inside the cleaning equipment 200 and causes failure; it can also help to improve the concealment of the position of the first suction channel 30, and at the same time help to reduce the number of components used to construct the first suction channel 30, which is conducive to reducing the weight and cost of the cleaning equipment 200.

[0069] Therefore, through such an arrangement, the first suction channel 30 can borrow the vertical space occupied by the air outlet filter 90 in the second suction channel 60 to make its overall path shorter, thereby reducing the loss of suction force, which is conducive to the rapid entry of dirty liquid into the dirty liquid holding chamber 20, thereby avoiding the problem of dirty liquid easily entering the unexpected structure inside the cleaning device 200 and causing failure.

[0070] In addition, a drain hole 11 is provided between the solid-liquid separation chamber 10 and the waste liquid holding chamber 20 to connect the two. The inlet of the first suction channel 30 is connected to the waste liquid holding chamber 20. A filter 40 is provided upstream of the drain hole 11 and has a plurality of filter holes 41 spaced apart therein. This allows the waste to be filtered by the filter 40 before flowing from the solid-liquid separation chamber 10 into the waste liquid holding chamber 20. This allows larger particles of waste to be filtered out upstream of the drain hole 11 to prevent clogging of the drain hole 11.

[0071] According to some optional embodiments of the present application, as shown in Figures 8, 11, and 12, a portion of the first suction channel 30 is located on the outer periphery of the solid-liquid separation chamber 10, and a portion of the inlet is connected to the dirty liquid holding chamber 20; another portion of the first suction channel 30 is located within the second suction channel 60 and passes through the air outlet filter 90, or another portion of the first suction channel 30 is located on the outer periphery of the second suction channel 60. (In the embodiments of the present application, the portion of the first suction channel 30 and the other portion of the first suction channel 30 do not constitute the complete first suction channel 30. The first suction channel 30 may also include another portion or multiple portions, and the present invention is not limited thereto, and the same shall apply hereinafter.)

[0072] A portion of the first suction channel 30 is located on the outer periphery of the solid-liquid separation chamber 10, and the inlet of this portion communicates with the waste liquid holding chamber 20. This improves the positional stability and concealment of the first suction channel 30, prevents the first suction channel 30 from occupying the internal space of the waste liquid holding chamber 20, thereby improving its layout and making the waste water tank 100 more compact. Furthermore, the overall path of the first suction channel 30 is shortened, reducing the loss of suction force and improving the suction effect, thereby facilitating the rapid entry of waste liquid into the waste liquid holding chamber 20 and preventing damage to the suction assembly 80.

[0073] In addition, another portion of the first suction channel 30 is located in the second suction channel 60, or another portion of the first suction channel 30 is located on the outer circumference of the second suction channel 60. This can effectively utilize the space inside the sewage tank 100, and can also help reduce the number of parts used to construct the first suction channel 30, which is beneficial to reducing the weight and cost of the cleaning equipment 200.

[0074] Specifically, as shown in Figures 5, 6 and 8, the sewage tank 100 includes a box body 71, a partition 72 and a box cover 73. The partition 72 is arranged in the box body 71, and the partition 72 divides the space in the box body 71 into a solid-liquid separation chamber 10 located above and a sewage holding chamber 20 located below. The box cover 73 is arranged above the box body 71; wherein, at least one of the box body 71 and the partition 72 forms a portion of the first suction channel 30, and the box cover 73 forms the second suction channel 60 and another portion of the first suction channel 30.

[0075] In particular, a partition 72 is provided in the upper and lower directions within the housing 71 to separate the solid-liquid separation chamber 10 from the dirty liquid holding chamber 20. Furthermore, the solid-liquid separation chamber 10 is located above the dirty liquid holding chamber 20. This allows the upper solid-liquid separation chamber 10 to preliminarily collect dirt on the clean surface within it under the negative pressure of the second suction channel 60. The lower dirty liquid holding chamber 20 can also, under the negative pressure of the first suction channel 30, suction the dirty water in the solid-liquid separation chamber 10. This achieves a step-by-step treatment effect of first pumping out the dirt and then separating the solid and liquid, thereby improving its scientificity and rationality. For example, a portion of the first suction channel 30 that communicates with the dirty liquid holding chamber 20 is constructed on the housing 71 and / or the partition 72. This improves the positional stability of the first suction channel 30 and prevents the first suction channel 30 from occupying the internal space of the dirty liquid holding chamber 20, thereby improving its rationality.

[0076] Furthermore, the lid 73 and the body 71 interlock vertically, making it easier for users to disassemble, assemble, and repair the internal structure of the sewage tank. Furthermore, the second suction channel 60 and another portion of the first suction channel 30 are concealed within the lid 73, enhancing the protection and concealment of the second and first suction channels 60 and 30, and improving the space utilization within the lid 73. The partition 72 is connected to the lid 73, allowing it to be removed when the lid 73 is removed, facilitating waste removal. The partition 72 and the lid 73 can be two separate components, connected to the lid 73 via a corresponding connection method. Alternatively, the partition 72 can be integrated with a portion of the lid 73 to provide a more integrated structure.

[0077] Furthermore, in combination with what is shown in FIG6 , the partition 72 includes a lower partition 721 and a side partition 722. The lower partition 721 divides the space inside the box body 71 into a solid-liquid separation chamber 10 located above and a dirty liquid holding chamber 20 located below. The side partition 722 is connected to the side edge of the lower partition 721 and extends upward. At least a portion of the first suction channel 30 is formed between the side partition 722 and the side wall on the outer periphery of the box body 71.

[0078] Among them, the lower partition 721 divides the space inside the box body 71 into a solid-liquid separation chamber 10 and a dirty liquid holding chamber 20 separated along the upper and lower directions, and the side partition 722 is bent upward from part of the outer peripheral edge of the lower partition 721, so that they can increase each other's weight and spatial mode, thereby increasing their own structural strength and bending and torsional stiffness; and the side partition 722 is arranged opposite to the side wall on one side of the outer periphery of the box body 71, so that the structural strength of the side wall of the box body 71 can be strengthened, and the spatial interference with the solid-liquid separation chamber 10 can be reduced, thereby improving its layout rationality.

[0079] In addition, a portion of the first suction channel 30 is formed between the side partition 722 and the side wall on the outer circumference of the box body 71, and the first suction channel 30 has an inlet at one end on the lower partition 721 facing the waste liquid holding chamber 20. In this way, the inlet can be concealed on the lower partition 721, and the first suction channel 30 and the side partition 722 can be formed into a structural whole, thereby enhancing the overall stability of the structure and the rationality of the spatial layout.

[0080] 9 and 13 , a first flow port 7221 is provided on the side partition 722, and a second flow port 731 is provided on the box cover 73. The first flow port 7221 is connected to a portion of the first suction channel 30, and the second flow port 731 is connected to another portion of the first suction channel 30. The first flow port 7221 and the second flow port 731 are arranged opposite to each other and are connected.

[0081] Among them, a first flow port 7221 is opened on the side partition 722, and a second flow port 731 is opened on the box cover 73. The first suction channel 30 is connected to the first flow port 7221 and the second flow port 731 respectively. In this way, the first suction channel 30 can smoothly connect the internal and external gases of the sewage tank 100 to achieve the effect of solid-liquid separation through suction, thereby improving the systematicness and integrity of the first suction channel 30 during operation.

[0082] In detail, a water retaining structure 31 located in the first suction channel 30 is provided on the side partition 722, and the water retaining structure 31 includes a plurality of water retaining plates 311, and the plurality of water retaining plates 311 are arranged at intervals in the suction direction. A vent 3111 is provided on each water retaining plate 311, and adjacent vents 3111 are staggered. The first flow outlet 7221 is located downstream of the water retaining structure 31.

[0083] Among them, a water retaining structure 31 is provided on the side partition 722, and the water retaining structure 31 is located in the first suction channel 30. In this way, the water retaining structure 31 can be extended by using the side surface of the side partition 722, thereby improving the structural reliability of the water retaining structure 31, and blocking the dirty liquid that may be sucked into the first suction channel 30 to increase the flow resistance of the dirty liquid in the first suction channel 30, thereby reducing the risk of dirty liquid in the gas passing through the first suction channel 30 and entering an unexpected structure in the cleaning equipment 200, causing it to fail.

[0084] In addition, multiple water baffles 311 are arranged at intervals in the suction direction, so that a blocking path can be added to the dirty liquid carried in the gas to increase the flow resistance of the dirty liquid, and each water baffle 311 is provided with a ventilation port 3111 for connecting the suction inlet and the suction outlet, so as to ensure the smooth flow of gas in the first suction channel 30, and the adjacent ventilation ports 3111 are staggered, so that layered staggered water baffles 311 can be formed to further increase the flow resistance of sewage, thereby ensuring that the first suction channel 30 can smoothly suck the gas, and further avoiding the problem of dirty liquid in the gas entering the unexpected structure in the cleaning equipment 200 and causing it to fail.

[0085] Furthermore, as shown in Figures 5, 11, and 12, the box cover 73 includes an outer cover 732 and an inner channel member 733. The inner channel member 733 is disposed within the outer cover 732. A second suction channel 60 is formed between the inner channel member 733 and the outer cover 732. The inner channel member also forms another portion of the first suction channel 30. The second suction channel 60 is formed between the inner channel member 733 and the outer cover 732. The second suction channel 60 is located within the solid-liquid separation chamber 10. This enhances the suction and collection function of the solid-liquid separation chamber 10 on dirt on the cleaning work surface, thereby improving cleaning efficiency.

[0086] In addition, the inner channel member 733 on the tank cover 73 also forms another part of the first suction channel 30. In this way, the end of the inner channel member 733 facing away from the sewage receiving chamber 20 serves as the outlet of the first suction channel 30. In this way, the outlet can be hidden within the structure of the tank cover 73, and the problem of the first suction channel 30 being easily interfered with and damaged by the structure outside the sewage tank body can be avoided, thereby improving the protection of the first suction channel 30 and the space utilization rate outside the sewage tank body.

[0087] Specifically, as shown in Figures 5, 8, and 9, a water retaining structure 31 is provided in a portion of the first suction channel 30. The water retaining structure 31 is provided in a portion of the first suction channel 30 adjacent to the dirty liquid holding chamber 20. This can block dirty liquid that may be drawn into the first suction channel 30, thereby increasing the flow resistance of the dirty liquid within the first suction channel 30. This further prevents the dirty liquid in the dirty liquid holding chamber 20 from easily entering undesirable structures within the cleaning device 200 under the suction force of the first suction channel 30, thereby extending the service life of the cleaning device 200.

[0088] For example, the water retaining structure 31 can also be set on the box cover 73, that is, when the box cover 73 is disassembled, the water retaining structure 31 is removed together, and the water retaining structure 31 can also be cleaned or flushed. Since the water retaining structure 31 also has dirty liquid flowing in the process of preventing dirty liquid from entering the suction component 80, there is dirt in the water retaining structure 31 and it needs to be flushed. The water retaining structure 31 can be a bracket, which is configured to have an S-shaped or surrounding air duct to increase the resistance to the flow of dirty liquid. The water retaining structure 31 can also be configured to be detachable relative to the box cover 73. The water retaining structure 31 can also be set on the side partition 722.

[0089] Of course, in other embodiments, the water retaining structure 31 is not necessarily provided on the box cover 73, but may be provided on the box body 71. The water retaining structure 31 and the box body 71 may be integrally formed, or may be installed later. It is only necessary to solve the sealing between the first suction channel 30 formed by the combination of the box cover 73 and the box body 71. The water retaining structure 31 has the functions of separating and blocking water vapor, thereby preventing water vapor from being directly sucked into the suction assembly 80 along the first suction channel 30 and causing the suction assembly 80 to fail.

[0090] Furthermore, as shown in FIG9 , the water retaining structure 31 includes a plurality of water retaining plates 311 , which are spaced apart in the suction direction. A vent 3111 is provided on each water retaining plate 311 , and adjacent vents 3111 are staggered.

[0091] Among them, multiple water baffles 311 are arranged at intervals in the suction direction, so that a blocking path can be added to the dirty liquid carried in the gas to increase the flow resistance of the dirty liquid, and each water baffle 311 is provided with a vent 3111 for connecting the suction inlet and the suction outlet, so that the smooth flow of gas in the first suction channel 30 can be ensured, and the adjacent vents 3111 are staggered, so that layered staggered water baffles 311 can be formed to further increase the flow resistance of dirty water, thereby ensuring that the first suction channel 30 can smoothly suck gas, and further preventing the dirty liquid in the gas from entering the undesirable structure of the cleaning device 200 and causing it to fail. For example, in two adjacent water baffles 311, the vent 3111 of the lower water baffle 311 is located at one end of its extension direction, and the vent 3111 of the upper water baffle 311 is located in the middle of its extension direction.

[0092] Specifically, the water retaining structure 31 includes an "S-shaped" or "inverted S-shaped" water retaining passage. For example, the water retaining structure 31 is formed with an "S-shaped" surrounding water retaining passage. In this way, while ensuring unobstructed air flow within the water retaining structure 31, it can also increase the flow resistance of sewage carried in the sucked air in the water retaining structure 31, thereby further preventing the sewage in the air from entering the undesirable structure of the cleaning device 200 and causing its failure.

[0093] According to some optional embodiments of the present application, in combination with Figures 5, 7 and 8, a sewage suction pipe 50 is provided in the sewage tank body, the outlet of the sewage suction pipe 50 is located in the solid-liquid separation chamber 10, and the solid-liquid separation chamber 10 is formed with an air outlet chamber 12 on the side away from the outlet of the sewage suction pipe 50, and the air outlet chamber 12 is connected to the inlet of the second suction channel 60; the solid-liquid separation chamber 10 is provided with a baffle 13 between the outlet of the sewage suction pipe 50 and the air outlet chamber 12.

[0094] Specifically, the inlet of the second suction channel 60 is directly connected to the air outlet chamber 12, and the air outlet chamber 12 is indirectly connected to the outlet of the sewage suction pipe 50 in the solid-liquid separation chamber 10. When the suction component 80 is started, the interior of the solid-liquid separation chamber 10 is pumped into a strong negative pressure through the first suction channel 30 and the second suction channel 60. Under the state of strong negative pressure in the solid-liquid separation chamber 10, the sewage suction pipe 50 draws the dirt into the solid-liquid separation chamber 10 through the outlet of the sewage suction pipe 50, so that the dirt collection work of the cleaning equipment 200 can be completed in advance, and the outlet directions of the air outlet chamber 12 and the sewage suction pipe 50 are different, so that the sewage or dirt discharged from the outlet of the sewage suction pipe 50 in the solid-liquid separation chamber 10 can be effectively kept away from the air outlet chamber 12, which is conducive to achieving the water-gas separation effect in the solid-liquid separation chamber 10, thereby reducing the risk of sewage being sucked into the second suction channel 60, reducing the equipment failure rate, and improving the sewage suction capacity of the cleaning equipment 200.

[0095] Among them, a baffle 13 is arranged between the outlet of the sewage suction pipe 50 and the air outlet chamber 12. When the second suction channel 60 forms a strong negative pressure air duct to form a suction force on the dirt discharged from the outlet of the sewage suction pipe 50, the baffle 13 can effectively block the dirt discharged from the outlet of the sewage suction pipe 50 from flowing back to the air outlet chamber 12, and then make the dirt fall onto the filter 40 under the action of gravity and the suction action of the first suction channel 30, thereby further reducing the risk of the dirt flowing out of the outlet of the sewage suction pipe 50 being sucked into the second suction channel 60, thereby reducing the failure rate of the cleaning equipment 200.

[0096] According to the second aspect of the present application, the sewage tank 100 includes a tank body 71, a tank cover 73 and an air outlet filter 90. The tank body 71 has a solid-liquid separation chamber 10 and a sewage holding chamber 20. The solid-liquid separation chamber 10 and the sewage holding chamber 20 are connected. The tank cover 73 is arranged above the tank body 71. The tank cover 73 forms a third suction channel and a fourth suction channel. The inlet of the third suction channel is connected to the solid-liquid separation chamber 10, and the fourth suction channel is connected to the sewage holding chamber 20; the air outlet filter 90 is arranged in the third suction channel; wherein the fourth suction channel is located in the third suction channel and passes through the air outlet filter 90, or the fourth suction channel is located on the outer circumference of the third suction channel.

[0097] Specifically, the box cover 73 and the box body 71 are installed in correspondence to form a closed cavity. The box body 71 is formed with a solid-liquid separation chamber 10 and a dirty liquid holding chamber 20. The dirty liquid holding chamber 20 is used to hold the dirty water sucked from the clean working surface. The solid-liquid separation chamber 10 is used to perform solid-liquid separation after pre-collection of dirt on the clean working surface, and at the same time accumulate solid waste.

[0098] Among them, after the dirt is sucked from the clean working surface to the solid-liquid separation chamber 10, the fourth suction channel sucks the gas in the dirty liquid holding chamber 20 to form a negative pressure in the dirty liquid holding chamber 20. The liquid in the dirt in the solid-liquid separation chamber 10 is also subjected to the negative pressure from the connection between the solid-liquid separation chamber 10 and the dirty liquid holding chamber 20. It also flows from the solid-liquid separation chamber 10 to the dirty liquid holding chamber 20. In this way, a fast and effective solid-liquid separation effect can be achieved. The third suction channel is connected to the solid-liquid separation chamber 10, which can enhance the suction force of the solid-liquid separation chamber 10 for the dirt on the clean working surface, thereby facilitating the pre-collection of dirt in the solid-liquid separation chamber 10.

[0099] In addition, an air outlet filter 90 is provided in the third suction channel, so that on the basis of quickly and effectively separating the dirt in the solid-liquid separation chamber 10 through the fourth suction channel, the tiny dust in the gas can be further filtered to prevent the dust from entering the unwanted structure inside the cleaning equipment 200 and causing malfunction.

[0100] For example, the outlet of the fourth suction channel is located within the third suction channel and passes through the air outlet filter 90. This improves the positional stability and concealment of the fourth suction channel. It also prevents the fourth suction channel from excessively occupying the internal space of the sewage tank body, making the sewage tank 100 more compact and improving its layout rationality. Furthermore, the shorter overall path of the fourth suction channel thus configured can reduce the loss of suction force and improve the suction effect, thereby facilitating the rapid entry of waste liquid into the waste liquid holding chamber 20 and preventing undesirable damage to the internal structures of the cleaning device 200.

[0101] For another example, the outlet of the first suction channel 30 is located on the outer circumference of the second suction channel 60, which can effectively use the vertical space occupied by the air outlet filter 90 to make its overall path shorter, thereby reducing the loss of suction force, which is conducive to the rapid entry of dirty liquid into the dirty liquid holding chamber 20, thereby avoiding the problem that dirty liquid easily enters the unexpected structure inside the cleaning device 200 and causes failure; at the same time, it is also beneficial to reduce the number of components used to construct the first suction channel 30, and can also help reduce the weight and cost of the cleaning device 200.

[0102] According to the third aspect of the present application, the cleaning device 200 includes the sewage tank 100 of the above embodiment. The cleaning device 200 having the sewage tank 100 can, while completing the rapid solid-liquid separation of the dirt sucked into the dirty liquid holding chamber 20, also utilize the vertical space occupied by the air outlet filter 90 in the second suction channel 60 to shorten its overall path, thereby reducing the loss of suction force, facilitating the rapid entry of dirty liquid into the dirty liquid holding chamber 20, and thus avoiding the problem of dirty liquid easily entering the undesirable structure inside the cleaning device 200 and causing failure. The type of the cleaning device 200 can be determined according to actual needs and is not limited in the present embodiment. Here, the other parts of the cleaning device 200, except for the sewage tank 100, can adopt the corresponding structure and shape of various types of vacuum cleaners such as handheld vacuum cleaners, horizontal vacuum cleaners, upright vacuum cleaners, and barrel vacuum cleaners, or can adopt the corresponding structure and shape of other cleaning devices 200 with dust collection functions, which is not limited in the present embodiment.

[0103] According to the fourth aspect of the present application, the cleaning equipment 200 includes a sewage tank 100, a suction assembly 80 and an air outlet filter 90. The sewage tank 100 has a solid-liquid separation chamber 10, a sewage holding chamber 20, a fifth suction channel, a sixth suction channel and a seventh suction channel. The solid-liquid separation chamber 10 is connected to the sewage holding chamber 20, the inlet of the fifth suction channel is connected to the solid-liquid separation chamber 10, the inlet of the sixth suction channel is connected to the sewage holding chamber 20, the inlet of the seventh suction channel is connected to the outlet of the sixth suction channel, the suction assembly 80 is connected to the outlet of the fifth suction channel and the outlet of the seventh suction channel, and the air outlet filter 90 is arranged in the fifth suction channel; wherein, the seventh suction channel is located in the fifth suction channel and passes through the air outlet filter 90, or the seventh suction channel is located on the outer circumference of the fifth suction channel.

[0104] Specifically, the outlet of the fifth suction channel and the outlet of the seventh suction channel are connected to the suction component 80, and the suction component 80 can simultaneously suction the fifth suction channel and the seventh suction channel, and the inlet of the fifth suction channel is connected to the solid-liquid separation chamber 10, and the inlet of the seventh suction channel is connected to the outlet of the sixth suction channel, and the inlet of the sixth suction channel is connected to the dirty liquid holding chamber 20, so that the air in the solid-liquid separation chamber 10 and the dirty liquid holding chamber 20 can be sucked at the same time to form a negative pressure, thereby achieving the effect of simultaneous solid-liquid separation and suction of dirt from the cleaning work surface.

[0105] For example, the air outlet filter 90 is disposed within the fifth suction channel, and the seventh suction channel is located within the fifth suction channel and passes through the air outlet filter 90. This improves the positional stability and concealment of the seventh suction channel, prevents the seventh suction channel from excessively occupying the internal space of the sewage tank body, and makes the sewage tank 100 more compact, thereby improving its layout rationality. Furthermore, the seventh suction channel has a shorter overall path, which reduces suction force loss and improves suction efficiency, thereby facilitating rapid entry of waste liquid into the waste liquid holding chamber 20 and preventing undesirable damage to the internal structures of the cleaning device 200.

[0106] For another example, the seventh suction channel is located on the outer circumference of the fifth suction channel, which can effectively use the vertical space occupied by the air outlet filter 90 to make its overall path shorter, thereby reducing the loss of suction force, and facilitating the rapid entry of dirty liquid into the dirty liquid holding chamber 20, thereby avoiding the problem that dirty liquid easily enters the unexpected structure inside the cleaning device 200 and causes failure; at the same time, it is also beneficial to reduce the number of components used to construct the seventh suction channel, and can also help reduce the weight and cost of the cleaning device 200.

[0107] According to some optional embodiments of the present application, the sewage tank 100 further has an eighth suction channel, which is connected between the outlet of the sixth suction channel and the inlet of the seventh suction channel, and a water retaining structure 31 is provided in the eighth suction channel. The water retaining structure 31 is provided in the eighth suction channel, which is connected between the outlet of the sixth suction channel and the inlet of the seventh suction channel. This can block the dirty liquid that may be sucked into the eighth suction channel to increase the flow resistance of the dirty liquid in the eighth suction channel, thereby further preventing the dirty liquid in the dirty liquid holding chamber 20 from easily entering the undesirable structure inside the cleaning device 200 under the action of the suction force of the eighth suction channel, thereby extending the service life of the cleaning device 200.

[0108] Specifically, the water retaining structure 31 includes a plurality of water retaining plates 311 , which are spaced apart in the suction direction. Each water retaining plate 311 is provided with a vent 3111 , and adjacent vents 3111 are staggered.

[0109] Among them, multiple water baffles 311 are arranged at intervals in the suction direction, so that a blocking path can be added to the dirty liquid carried in the gas to increase the flow resistance of the dirty liquid, and each water baffle 311 is provided with a vent 3111 for connecting the suction inlet and the suction outlet, so that the smooth flow of gas in the first suction channel 30 can be ensured, and the adjacent vents 3111 are staggered, so that layered staggered water baffles 311 can be formed to further increase the flow resistance of dirty water, thereby ensuring that the first suction channel 30 can smoothly suck gas, and further preventing the dirty liquid in the gas from entering the undesirable structure of the cleaning device 200 and causing it to fail. For example, in two adjacent water baffles 311, the vent 3111 of the lower water baffle 311 is located at one end of its extension direction, and the vent 3111 of the upper water baffle 311 is located in the middle of its extension direction.

[0110] The water retaining structure 31 includes an S-shaped or inverted S-shaped water retaining passage. For example, the water retaining structure 31 is formed with an S-shaped surrounding water retaining passage. This can ensure that the air in the water retaining structure 31 is unobstructed while also increasing the flow resistance of the sewage carried in the sucked air in the water retaining structure 31, thereby further preventing the sewage in the air from entering the undesirable structure of the cleaning device 200 and causing its failure.

[0111] According to a fifth aspect of the present application, a cleaning device 200 includes a solid-liquid separation chamber 10, a dirty liquid holding chamber 20, a first suction channel 30, a second suction channel 60 and a suction assembly 80. The solid-liquid separation chamber 10 and the dirty liquid holding chamber 20 are connected, the inlet of the first suction channel 30 is connected to the dirty liquid holding chamber 20, the inlet of the second suction channel 60 is connected to the solid-liquid separation chamber 10, and the outlet of the first suction channel 30 and the outlet of the second suction channel 60 are both connected to the suction assembly 80; at least part of the first suction channel 30 is located in the second suction channel 60, or at least part of the first suction channel 30 is located on the outer circumference of the second suction channel 60.

[0112] In detail, after the dirt is sucked from the clean working surface to the solid-liquid separation chamber 10, the first suction channel 30 sucks the gas in the dirty liquid holding chamber 20 to form a negative pressure in the dirty liquid holding chamber 20. The liquid in the dirt in the solid-liquid separation chamber 10 also flows from the solid-liquid separation chamber 10 to the dirty liquid holding chamber 20 after being subjected to the negative pressure from the connection between the solid-liquid separation chamber 10 and the dirty liquid holding chamber 20. In this way, a fast and effective solid-liquid separation effect can be achieved. The second suction channel 60 is connected to the solid-liquid separation chamber 10, which can enhance the suction force of the solid-liquid separation chamber 10 for the dirt on the clean working surface, thereby facilitating the pre-collection of dirt in the solid-liquid separation chamber 10.

[0113] For example, at least a portion of the first suction channel 30 is located within the second suction channel 60. This improves the positional stability and concealment of the first suction channel 30. It also prevents the first suction channel 30 from excessively occupying the internal space of the sewage tank body, making the sewage tank 100 more compact and improving its layout. Furthermore, this arrangement shortens the overall path of the first suction channel 30, reducing suction force loss and improving suction efficiency. This facilitates rapid entry of waste liquid into the waste liquid holding chamber 20, thereby preventing undesirable damage to the internal structures of the cleaning device 200.

[0114] For another example, at least a portion of the first suction channel 30 is located on the outer circumference of the second suction channel 60. This can effectively utilize the vertical space occupied by the second suction channel 60 to shorten its overall path, thereby reducing the loss of suction force and facilitating the rapid entry of dirty liquid into the dirty liquid holding chamber 20, thereby preventing the dirty liquid from easily entering the unwanted structure inside the cleaning device 200 and causing failure. At the same time, it is also beneficial to reduce the number of components used to construct the first suction channel 30, and can also help reduce the weight and cost of the cleaning device 200.

[0115] Specifically, a water retaining structure is provided in the first suction channel 30 for preventing liquid from flowing along the first suction channel 30. This can prevent the dirty liquid that may be sucked into the first suction channel 30 to increase the flow resistance of the dirty liquid in the first suction channel 30.

[0116] Furthermore, the water retaining structure 31 includes a plurality of water retaining plates 311, which are spaced apart in the suction direction. Each water retaining plate 311 is provided with a vent 3111, and adjacent vents 3111 are staggered. This ensures smooth flow of gas within the first suction channel 30. Furthermore, the staggered arrangement of adjacent vents 3111 forms layered, staggered water retaining plates 311, further increasing resistance to sewage flow. This ensures smooth suction of gas by the first suction channel 30 while also preventing waste liquid in the gas from entering undesirable structures within the cleaning device 200 and causing failure.

[0117] Specifically, the water retaining structure 31 includes an "S-shaped" or "inverted S-shaped" water retaining passage. For example, the water retaining structure 31 is formed with an "S-shaped" surrounding water retaining passage. In this way, while ensuring unobstructed air flow within the water retaining structure 31, it can also increase the flow resistance of sewage carried in the sucked air in the water retaining structure 31, thereby further preventing the sewage in the air from entering undesirable structures in the cleaning device 200 and causing failure thereof.

[0118] According to the sixth aspect of the present application, the cleaning device 200 includes a sewage tank 100, a first suction channel 30, a second suction channel 60 and a suction assembly 80. The sewage tank 100 includes a box body 71, a box cover 73 and a solid-liquid separation chamber 10 and a sewage holding chamber 20 formed inside the sewage tank 100. The inlet of the first suction channel 30 is connected to the sewage holding chamber 20, the inlet of the second suction channel 60 is connected to the solid-liquid separation chamber 10, the outlets of the first suction channel 30 and the second suction channel 60 are connected to the suction assembly 80, and the first suction channel 30 and the second suction channel 60 are at least partially located inside the box cover 73.

[0119] In detail, after the dirt is sucked from the clean working surface to the solid-liquid separation chamber 10 by the suction component 80, the first suction channel 30 sucks the gas in the dirty liquid holding chamber 20 to form a negative pressure in the dirty liquid holding chamber 20. The liquid in the dirt in the solid-liquid separation chamber 10 also flows from the solid-liquid separation chamber 10 to the dirty liquid holding chamber 20 after being subjected to the negative pressure from the connection between the solid-liquid separation chamber 10 and the dirty liquid holding chamber 20. In this way, a fast and effective solid-liquid separation effect can be achieved. The second suction channel 60 is connected to the solid-liquid separation chamber 10, which can enhance the suction force of the solid-liquid separation chamber 10 for the dirt on the clean working surface, thereby facilitating the pre-collection of dirt in the solid-liquid separation chamber 10.

[0120] The first suction channel 30 can be provided in the assembly space between the housing 71 and the outer shell, thereby not occupying the same space within the housing 71 and improving the dirt holding capacity of the housing 71. The first suction channel 30 can also be formed directly by utilizing the wall thickness of the housing 71 or the space within the housing 71, thereby improving the positional stability of the first suction channel 30 and ensuring its operational stability. The first suction channel 30 can also be formed by utilizing the wall thickness of the outer shell or the outer shell.

[0121] In addition, the first suction channel 30 and the second suction channel 60 are at least partially located inside the box cover 73, so that the first suction channel 30 and the second suction channel 60 can be hidden inside the box cover 73, thereby avoiding the problem of them being easily interfered with and damaged by the structure outside the box cover 73, thereby improving their protection.

[0122] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0123] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0124] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0125] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A sewage tank (100), characterized in that: include: A sewage tank (100) body, the sewage tank (100) body comprising a solid-liquid separation chamber (10), a sewage containing chamber (20), a first suction channel (30) and a second suction channel (60), the solid-liquid separation chamber (10) and the sewage containing chamber (20) being in communication, the inlet of the first suction channel (30) being in communication with the sewage containing chamber (20), and the inlet of the second suction channel (60) being in communication with the solid-liquid separation chamber (10); A suction component (80), wherein the suction component (80) provides negative pressure airflow for the first suction channel (30) and the second suction channel (60); and an air outlet filter (90), wherein the air outlet filter (90) is disposed in the second suction channel (60), wherein the outlet airflow of the first suction channel (30) and the outlet airflow of the second suction channel (60) converge at the suction component (80), or After the outlet airflow of the first suction channel (30) converges into the second suction channel (60), it flows to the suction assembly (80) together with the airflow in the second suction channel (60), or After the outlet airflow of the second suction channel (60) converges into the first suction channel (30), it flows to the suction assembly (80) together with the airflow in the first suction channel (30).

2. The sewage tank (100) according to claim 1, characterized in that: The outlet of the first suction channel (30) is located in the second suction channel (60) and passes through the air outlet filter (90), or The outlet of the first suction channel (30) is located on an adjacent side of the second suction channel (60), or The outlet of the first suction channel (30) is located on a side adjacent to the air outlet filter (90).

3. The sewage tank (100) according to claim 2, characterized in that: A portion of the first suction channel (30) is located on the outer circumference of the solid-liquid separation chamber (10), and a portion of the inlet is connected to the dirty liquid containing chamber (20); Another part of the first suction channel (30) is located in the second suction channel (60) and passes through the air outlet filter (90), or Another part of the first suction channel (30) is located on an adjacent side of the second suction channel (60).

4. The sewage tank (100) according to claim 3, characterized in that: The sewage tank (100) comprises: Box body (71); a partition (72), the partition (72) being arranged in the box body (71), the partition (72) dividing the space in the box body (71) into the solid-liquid separation chamber (10) located at the top and the dirty liquid containing chamber (20) located at the bottom; A box cover (73), wherein the box cover (73) is arranged above the box body (71); Wherein, at least one of the box body (71) and the partition plate (72) forms the portion of the first suction channel (30), and the box cover (73) forms the second suction channel (60) and the other portion of the first suction channel (30).

5. The sewage tank (100) according to claim 4, characterized in that: The partition (72) comprises: a lower partition (721), wherein the lower partition (721) divides the space in the box body (71) into the solid-liquid separation chamber (10) located at the top and the dirty liquid containing chamber (20) located at the bottom; and A side partition (722), wherein the side partition (722) is connected to the side edge of the lower partition (721) and extends upward, and at least a portion of the first suction channel (30) is formed between the side partition (722) and the side wall on the outer circumference of the box body (71).

6. The sewage tank (100) according to claim 5, characterized in that: The side partition plate (722) is provided with a first flow port (7221), and the box cover (73) is provided with a second flow port (731), the first flow port (7221) is communicated with the part of the first suction channel (30), and the second flow port (731) is communicated with the other part of the first suction channel (30), and the first flow port (7221) and the second flow port (731) are arranged opposite to each other and are communicated with each other.

7. The sewage tank (100) according to claim 6, characterized in that: The side baffle plate (722) is provided with a water retaining structure (31) located in the first suction channel (30), and the water retaining structure (31) comprises: A plurality of water baffles (311) are arranged at intervals in the suction direction, each of the water baffles (311) is provided with a vent (3111), adjacent vents (3111) are arranged in a staggered manner, and the first flow opening (7221) is located downstream of the water baffle structure (31).

8. The sewage tank (100) according to any one of claims 4 to 7, characterized in that: The box cover (73) comprises: an outer cover (732); and An inner channel member (733), wherein the inner channel member (733) is disposed inside the outer cover (732), wherein the second suction channel (60) is formed between the inner channel member (733) and the outer cover (732), and wherein the inner channel member (733) forms the other portion of the first suction channel (30).

9. The sewage tank (100) according to any one of claims 3 to 8, characterized in that: A water retaining structure (31) is provided in the portion of the first suction channel (30).

10. The sewage tank (100) according to claim 9, characterized in that: The water retaining structure (31) comprises: A plurality of water baffles (311) are provided, wherein the plurality of water baffles (311) are arranged at intervals in the suction direction, each of the water baffles (311) is provided with a vent (3111), and adjacent vents (3111) are arranged in a staggered manner.

11. The sewage tank (100) according to claim 9 or 10, characterized in that: The water retaining structure (31) comprises an "S-shaped" or "inverted S-shaped" water retaining passage.

12. The sewage tank (100) according to any one of claims 1 to 11, characterized in that: A sewage suction pipe (50) is arranged in the main body of the sewage tank (100), the outlet of the sewage suction pipe (50) is located in the solid-liquid separation chamber (10), and the solid-liquid separation chamber (10) is formed with an air outlet chamber (12) on a side away from the outlet of the sewage suction pipe (50), and the air outlet chamber (12) is communicated with the inlet of the second suction channel (60); The solid-liquid separation chamber (10) is provided with a baffle (13) between the outlet of the sewage suction pipe (50) and the air outlet chamber (12).

13. A sewage tank (100), characterized in that: include: A box body (71), the box body (71) having a solid-liquid separation chamber (10) and a dirty liquid containing chamber (20), the solid-liquid separation chamber (10) and the dirty liquid containing chamber (20) being in communication; a box cover (73), the box cover (73) being arranged above the box body (71), the box cover (73) being formed with a third suction channel and a fourth suction channel, the inlet of the third suction channel being in communication with the solid-liquid separation chamber (10), and the fourth suction channel being in communication with the dirty liquid containing chamber (20); and an air outlet filter (90), the air outlet filter (90) being arranged in the third suction channel; wherein the fourth suction channel is located in the third suction channel and passes through the air outlet filter (90), or The fourth suction passage is located on an outer circumference side of the third suction passage.

14. A cleaning device (200), characterized in that: include: A sewage tank (100) according to any one of claims 1-13.

15. A cleaning device (200), characterized in that: include: A solid-liquid separation chamber (10); A dirty liquid receiving chamber (20); a fifth suction channel; a sixth suction channel; a seventh suction channel, the solid-liquid separation chamber (10) and the waste liquid containing chamber (20) being in communication, the inlet of the fifth suction channel being in communication with the solid-liquid separation chamber (10), the inlet of the sixth suction channel being in communication with the waste liquid containing chamber (20), and the inlet of the seventh suction channel being in communication with the outlet of the sixth suction channel; and A suction assembly (80), the suction assembly (80) being in communication with an outlet of the fifth suction channel and an outlet of the seventh suction channel; Wherein, the seventh suction channel is located in the fifth suction channel, or The seventh suction channel is located on an outer circumference side of the fifth suction channel.

16. The cleaning device (200) according to claim 15, characterized in that: The sewage tank (100) further comprises an eighth suction channel, the eighth suction channel being connected between the outlet of the sixth suction channel and the inlet of the seventh suction channel, and a water retaining structure (31) is arranged in the eighth suction channel.

17. The sewage tank (100) according to claim 16, characterized in that: The water retaining structure (31) comprises: A plurality of water baffles (311) are provided, wherein the plurality of water baffles (311) are arranged at intervals in the suction direction, each of the water baffles (311) is provided with a vent (3111), and adjacent vents (3111) are arranged in a staggered manner.

18. The sewage tank (100) according to claim 16 or 17, characterized in that: The water retaining structure (31) comprises an "S-shaped" or "inverted S-shaped" water retaining passage.

19. A cleaning device (200), characterized in that: The invention comprises a solid-liquid separation chamber (10), a waste liquid containing chamber (20), a first suction channel (30), a second suction channel (60) and a suction assembly (80); the solid-liquid separation chamber (10) and the waste liquid containing chamber (20) are in communication; the inlet of the first suction channel (30) is in communication with the waste liquid containing chamber (20); the inlet of the second suction channel (60) is in communication with the solid-liquid separation chamber (10); and the outlet of the first suction channel (30) and the outlet of the second suction channel (60) are both in communication with the suction assembly (80); At least part of the first suction channel (30) is located in the second suction channel (60), or At least a portion of the first suction channel (30) is located on the outer circumference side of the second suction channel (60).

20. The cleaning device (200) according to claim 19, characterized in that A water retaining structure (31) for preventing liquid from flowing along the first suction channel (30) is provided in the first suction channel (30).

21. The cleaning device (200) according to claim 20, characterized in that The water retaining structure (31) comprises: A plurality of water baffles (311) are provided, wherein the plurality of water baffles (311) are arranged at intervals in the suction direction, each of the water baffles (311) is provided with a vent (3111), and adjacent vents (3111) are arranged in a staggered manner.

22. The cleaning device (200) according to claim 20 or 21, characterized in that: The water retaining structure (31) comprises an "S-shaped" or "inverted S-shaped" water retaining passage.

23. A cleaning device (200), characterized in that: It comprises a sewage tank (100), wherein the sewage tank (100) comprises: Box body (71); Box cover (73); A solid-liquid separation chamber (10) and a waste liquid containing chamber (20), wherein the solid-liquid separation chamber (10) and the waste liquid containing chamber (20) are formed inside the waste water tank (100); A first suction channel (30), the inlet of the first suction channel (30) being in communication with the dirty liquid containing chamber (20); a second suction channel (60), the inlet of the second suction channel (60) being in communication with the solid-liquid separation chamber (10); and A suction assembly (80), wherein outlets of the first suction channel (30) and the second suction channel (60) are connected to the suction assembly (80), and the first suction channel (30) and the second suction channel (60) are at least partially located in the box cover (73).

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