Cleaning apparatus and cleaning system

Abstract

This invention provides a cleaning device and a cleaning system. The cleaning device includes a device body extending longitudinally along a first direction. The device body includes a clean water tank receiving section configured to receive a clean water tank and a wastewater tank receiving section configured to receive a wastewater tank. The cleaning device further includes a suction port configured to allow wastewater from the surface to be cleaned to be drawn into the inlet of the cleaning device; and a suction channel configured to be in fluid communication with the suction port and the wastewater tank. Both the clean water tank receiving section and the wastewater tank receiving section are in fluid communication with the suction channel, so that liquid accumulated in the clean water tank receiving section and the wastewater tank receiving section is guided to the suction channel for recycling into the wastewater tank.

Description

Cleaning equipment and cleaning systems The present invention relates to the field of automatic cleaning technology, and in particular to a cleaning device and a cleaning system. With the continuous development of science and technology, cleaning equipment, such as floor scrubbers, have been widely adopted by households. Floor scrubbers save time and effort compared to traditional manual cleaning. A floor scrubber typically consists of a main unit and a cleaning base. The main unit houses a water recovery tank, such as a wastewater tank, a cleaning fluid tank, such as a fresh water tank, and a main blower for suction. The cleaning base includes two cleaning rollers for mopping and scrubbing, typically used for efficient cleaning. Clean cleaning fluid, such as water, is sprayed through an internal water pipe onto the fleece-coated cleaning rollers, which rotate at high speed to scrub the floor. With the widespread use of floor scrubbers, a more compact overall structure has become a common requirement, along with a rational layout of the components within the machine. The invention provides a cleaning device and a cleaning system. Some embodiments of the present invention provide a cleaning device, comprising: A cleaning seat configured to move on the surface to be cleaned; The device body extends longitudinally along the first direction and is pivotally connected to the cleaning seat, comprising: A sewage tank is detachably mounted on one side of the device body; a power source mounted on the other side of the device body, wherein a direction from one side of the device body to the other side is substantially perpendicular to the first direction; a first air duct connecting the sewage tank and the air inlet of the power source; a second air duct connecting the air outlet of the power source and the air outlet of the cleaning device; Wherein, in response to the activation of the power source, the cleaning device is configured so that the working airflow flows sequentially through the cleaning seat, the sewage tank, the first air duct, the power source, the second air duct and the air outlet of the cleaning device and is discharged. Some embodiments of the present invention provide a cleaning device, comprising: The device housing comprises: The cleaning seat is configured to move on the surface to be cleaned. An equipment body extending longitudinally along a first direction and pivotally connected to the cleaning seat; an equipment air duct configured to form a flow path for a working air flow; The equipment air duct is formed by at least a sewage suction port, a sewage tank and a power source. When the power source is started, the working airflow flows through the sewage suction port, the sewage tank and the power source in sequence. The parts of the equipment air duct before and after the air outlet of the sewage tank are respectively a front air duct and a rear air duct, and the overall flow directions of the working airflow in the front air duct and the rear air duct are opposite. Some embodiments of the present invention provide a cleaning device, comprising: A cleaning seat, which is configured to move on the surface to be cleaned and includes a sewage suction port; The device body extends longitudinally along the first direction and is pivotally connected to the cleaning seat, comprising: a power source configured to generate a moving working airflow when activated; a wastewater tank configured to receive wastewater recovered from the cleaned surface; The moving path of the working airflow passes through the sewage suction port, the sewage tank and the power source in sequence, and the working airflow contains the sewage, which is collected and contained in the sewage tank; The power source includes an air inlet and an air outlet. The working airflow enters the power source from the air inlet. The air inlet extends in a first direction toward a direction away from the cleaning seat. Some embodiments of the present invention provide a cleaning system comprising: piles; and In the cleaning device described in any of the above embodiments, the pile body is configured to support the cleaning device. Some embodiments of the present invention provide a cleaning device, comprising: The device body extends longitudinally along a first direction and includes: The clean water tank accommodating portion is configured to accommodate the clean water tank, comprising: a first chassis configured to carry the clean water tank, wherein the first chassis comprises at least one first liquid leakage port; The sewage tank accommodating portion is configured to accommodate the sewage tank, comprising: The side wall of the sewage tank accommodating portion extends along the first direction; The first liquid leakage port is in fluid communication with the side wall of the sewage tank accommodating portion, and is configured to drain the liquid in the first bottom tray through the first liquid leakage port and the side wall of the sewage tank accommodating portion. Some embodiments of the present invention provide a cleaning device, comprising: The device body extends longitudinally along a first direction and includes: The clean water tank accommodating portion is configured to accommodate the clean water tank, a sewage tank accommodating portion configured to accommodate a sewage tank; a sewage suction port, configured to allow sewage from the cleaned surface to be sucked into the inlet of the cleaning device; a sewage suction channel configured to be in fluid communication with the sewage suction port and the sewage tank; The clean water tank accommodating part and the sewage tank accommodating part are both in fluid communication with the sewage suction channel, so that the liquids accumulated in the clean water tank accommodating part and the sewage tank accommodating part are both diverted to the sewage suction channel to be recovered into the sewage tank. Some embodiments of the present invention provide a cleaning system comprising: piles; and In the cleaning device described in any of the above embodiments, the pile body is configured to support the cleaning device. Some embodiments of the present invention provide a cleaning device, comprising: Equipment housing, including: a device body extending longitudinally along a first direction; A cleaning seat, pivotally connected to the device body; A liquid supply system configured to supply cleaning liquid to the cleaning roller brush and / or the cleaned surface, comprising: a liquid storage device configured to store a cleaning liquid; Liquid supply line, including: A dispensing connector configured to dispense the cleaning fluid, comprising: a liquid inlet, configured as an inlet for the cleaning liquid; There are at least two liquid outlets, and the one closer to the liquid inlet among the at least two liquid outlets has a larger diameter. Some embodiments of the present invention further provide a cleaning system, comprising: piles; and In the cleaning device described in the above embodiment, the pile body is configured to support the cleaning device. This application is a divisional application of the invention patent application with application number 112112309, invention name “Cleaning equipment and cleaning system” and application date March 30, 2023. To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only some, not all, of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention. It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or device. In the absence of further limitations, an element defined by the phrase "comprising a" does not exclude the presence of other identical elements in the product or device comprising the element. Cleaning equipment, such as a floor scrubber, typically includes an equipment housing, which is divided into an equipment body and a cleaning base. The equipment body is provided with a recovery water tank, such as a sewage tank, and a cleaning liquid tank, such as a clean water tank, and a main fan for suction. The cleaning base includes a cleaning roller brush for mopping. The cleaning roller brushes may be, for example, 1, 2, or more. To ensure cleaning efficiency, two cleaning roller brushes are generally provided. Clean cleaning liquid, such as clean water, is sprayed onto the cleaning roller brush with fluff through a built-in water pipe. The cleaning roller brush rotates at high speed to scrub the ground. At the same time, the main fan forms a negative pressure in the equipment air duct of the cleaning equipment. The suction port of the cleaning equipment sucks in the sewage after cleaning the surface and pumps it into the sewage tank. The sewage return path serves as part of the equipment air duct of the cleaning equipment. After use, the cleaning device is usually placed back on the pile body, where the cleaning roller brush can be cleaned and dried. The cleaning roller brush can be dried, for example, by air drying or heating. The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the related art, the fan element of the cleaning equipment is dangerous due to the suction generated by the rotating impeller, and is usually installed at the upper part of the equipment. When the user maintains the cleaning equipment, such as installing or removing the sewage tank, it is easy for the user to accidentally touch the fan with their hands and cause an accident. If a protective net is installed around the fan, it will affect the air output of the fan. To this end, embodiments of the present invention provide a cleaning device that, by arranging the fan and sewage tank approximately horizontally relative to each other, prevents users from accidentally touching the fan during maintenance, thereby improving safety and operability. Furthermore, embodiments of the present invention utilize a curved first air duct to achieve a more compact structural layout, saving space while lowering the overall center of gravity of the cleaning device. Furthermore, the curved air duct effectively reduces noise generated by the fan during operation, enhancing the user experience. Specifically, the cleaning device provided by the embodiment of the present invention is taken as an example. FIG1 is a schematic structural diagram of the cleaning device provided by some embodiments of the present invention. As shown in FIG1 , the cleaning device 20, such as a floor scrubber, includes an equipment housing, which is divided into: a cleaning base 21, an equipment body 22, and a handle element 23. Among them, the equipment body 22 is arranged above the cleaning base 21 and is movably connected to the cleaning base 21, such as a pivot connection. The handle element 23 is connected to one end of the equipment body 22 away from the cleaning base 21, and is used for the user to operate and hold. The user holds the handle element 23 to manipulate the cleaning base 21 to perform cleaning tasks on the cleaned surface, such as the ground. For ease of description, the following directional definitions are provided: A floor scrubber can be calibrated along three mutually perpendicular axes: the transverse axis Y, the fore-aft axis X, and the vertical axis Z. The direction indicated by the arrow along the fore-aft axis X is labeled "forward," and the direction opposite the arrow along the fore-aft axis X is labeled "backward." The transverse axis Y essentially runs along the width of the cleaning base 21. The direction indicated by the arrow along the transverse axis Y is labeled "left," and the direction opposite the arrow along the transverse axis Y is labeled "right." The vertical axis Z extends upward from the bottom surface of the cleaning base 21. As shown in Figure 1, the direction extending from the handle element 23 to the device body 22 or the direction extending from the device body 22 to the handle assembly 23 is defined as the first direction, and the direction perpendicular to the first direction is the second direction. Usually, when the cleaning device is in the storage state, as shown in Figure 1, the first direction is roughly vertical, with a small angle to the vertical axis Z, roughly close to parallel, for example, an angle of less than 15 degrees, and the first direction is, for example, vertically upward or vertically downward; the second direction is basically a horizontal direction, basically parallel to the front-to-back axis X or the transverse axis Y, such as a left-right horizontal direction or a front-to-back horizontal direction. In the embodiments of the present invention, "substantially perpendicular" means, for example, that the angle between the two directions is greater than or equal to 75 degrees and less than or equal to 105 degrees, such as 90 degrees. "Substantially extending in one direction" or "substantially parallel" means that the two directions are approximately parallel, such as having an angle of less than 30 degrees (preferably less than 15 degrees). In some embodiments, the device body 22 refers to the portion of the cleaning device located between the cleaning base 21 and the handle element 23. The device body 22 extends longitudinally as a whole, that is, extends in a first direction. The handle element 23 is connected to the upper end of the device body 22, and the cleaning base 21 is connected to the lower end of the device body 22. The device body 22 is pivotally connected to the cleaning base 21. The device body 22 can rotate relative to the cleaning base 21, thereby changing the operating angle and flexibly adjusting the cleaning posture. The cleaning base 21 includes a cleaning roller brush 211 located at its bottom. Specifically, the number of cleaning roller brushes 211 is, for example, 1 or more, for example, 2, and the cleaning roller brush 211 can rotate at high speed to mop the floor. In some embodiments, the cleaning device 20 further includes a power source, which is configured to generate a moving airflow within the cleaning device. This airflow carries the sewage (which may include solid waste) from the cleaned surface into the cleaning device 20 for recycling, and thus this airflow is defined as a recycling airflow, which may also be referred to as a working airflow. The airflow path through which the recycled airflow flows within the cleaning device 20 is formed by the device air duct, and the entire airflow path passes through at least the sewage suction port, the dirt collection portion (e.g., a sewage tank), and the power source of the cleaning device 20 in sequence, that is, the device air duct includes at least the sewage suction port, the dirt collection portion (e.g., a sewage tank), and the power source, wherein the sewage suction port is the entrance for sewage to enter the cleaning device 20, and is also the air inlet of the device air duct; the recycled airflow flowing out of the dirt collection portion does not carry sewage, and therefore, the airflow path defined by the sewage suction port to the dirt collection portion is defined as the recycling path. Specifically, the power source can be a suction source, such as a fan, which is arranged in the equipment body 22 and configured to allow gas to circulate in the equipment air duct to form a recovery airflow, providing suction power for sewage recovery; the sewage recovery pipeline connects the sewage suction port and the sewage tank 25, thereby forming a part of the equipment air duct. Under the action of the suction force generated by the fan, the sewage is sucked into the sewage tank 25 through the sewage recovery pipeline. In some embodiments, the power source includes an air inlet and an air outlet, and the power generated by the power source causes the recovered air flow to enter from the air inlet and be discharged from the air outlet; when the power source is a suction source, taking a fan as an example, the fan refers to a collection of related components that includes at least an impeller that moves air, that is, it can be a fan product (which usually includes an impeller, a motor, a corresponding drive control circuit, and a housing that accommodates the aforementioned devices), it can also be an impeller and its drive motor, or it can also be just a specific impeller. Please refer to Figures 1 and 2 together. As shown in Figure 1, a cleaning device 20, such as a floor scrubber, includes a clean water tank 26, a sewage tank 25, a fan 273, and an equipment air duct. The fan 273 sucks gas to form a recycling airflow in the equipment air duct to generate negative pressure, thereby sucking the sewage on the cleaned surface (including garbage when there is garbage on the cleaned surface, hereinafter referred to as sewage) into the sewage tank. The clean water tank 26 and the dirty water tank 25 are both, for example, disposed on the device body 22. In some embodiments, both are detachably connected to the device body 22. In some embodiments, the clean water tank 26 and the dirty water tank 25 are arranged along a first direction, for example, with the clean water tank 26 disposed above the dirty water tank 25. The clean water tank 26 is used to hold a cleaning liquid, such as clean water. This cleaning liquid can be supplied to the cleaning roller brush 211 and / or the cleaned surface via a clean water pipeline, wetting the surface of the cleaning roller brush 211 and enabling the cleaning roller brush 211 to wet clean the cleaned surface. The dirty water tank 25 is configured to hold recycled dirty water. When the cleaning roller brush 211 performs wet cleaning, it generates dirty water on the cleaned surface. This dirty water (which may include debris on the cleaned surface) can be recycled into the dirty water tank 25 via a dirty water recycling pipeline. The fan 273 is disposed within the device body 22 and configured to circulate the recovered airflow within the device's air duct, providing power for wastewater recovery. In some embodiments, the wastewater tank 25 is mounted on one side of the device body 22, and the fan 273 is mounted on the other side of the device body 22. In some embodiments, the fan 273 and the wastewater tank 25 are arranged generally along a second direction. The fan 273 and the wastewater tank 25 are arranged generally horizontally relative to each other, so that when a user installs or removes the wastewater tank 25, the air inlet of the fan 273 is not directly connected to the air outlet of the wastewater tank 25. Therefore, user operation is not affected by the fan 273, and there is no need to install a protective net around the fan 273 to protect the user but which would also affect the air volume. In some embodiments, the equipment air duct further includes a first air duct and a second air duct, wherein the first air duct connects the sewage tank with the air inlet of the fan, and the second air duct connects the air outlet of the fan with the air outlet of the cleaning equipment. The length and shape of the first and second air ducts are not limited and can be dedicated structural members or elements designed to achieve the air duct function, or can be air ducts formed by the space between components of the cleaning equipment. In some embodiments, as shown in FIG2 , the air duct of the device further includes a first air duct 241 and a second air duct 242. The first air duct 241 connects the sewage tank 25 with the air inlet 2731 of the fan 273, and the second air duct 242 extends substantially along the first direction of the device body 22, connecting the air outlet 2732 of the fan 273 with the air outlet 221 of the cleaning device. The first air duct 241 is a curved air duct, connecting the sewage tank 25 with the air inlet 2731 of the fan 273 in a curved manner. Specifically, the air inlet of the first air duct 241 is connected to the sewage tank 25. The first air duct 241 extends substantially along the second direction at its air inlet. After extending a certain distance in the second direction, the first air duct 241 bends downward and extends substantially along the first direction. The first air duct 241 extends along the first direction and connects to the air inlet 2731 of the fan 273. In some embodiments, the first air duct 241 is curved at the bend where it turns from the first direction to the second direction, i.e., the first air duct 241 has a smooth transition section at the bend, thereby reducing the resistance of the recycled airflow in the first air duct 241 and preventing turbulence at the bend. Designing the first air duct 241 as a curved air duct to achieve the parallel arrangement of the sewage tank and the fan can make the structural layout of the cleaning device more compact, saving space, and also lowering the overall center of gravity of the cleaning device, making it easier to hold and operate. The curved air duct can also reduce the noise generated by the recycled airflow to a certain extent, improving the user experience. In some embodiments, the second air duct 242 is connected to the air outlet 2732 of the fan 273, and the recovered air flow from the air outlet 2732 of the fan 273 is discharged from the cleaning device through the second air duct 242. Alternatively, the second air duct can be formed by the gaps between the various components of the cleaning device, and the recovered air flow discharged through the air outlet 2732 of the fan 273 can be discharged outside the cleaning device through the second air duct formed by the gaps between the various components of the cleaning device. As an example, the second air duct 242 is arranged between the fan 273 and the sewage tank 25, and there is a narrow gap extending along the first direction between the fan 273 and the sewage tank 25. The second air duct 242 extends from top to bottom along the first direction to the vicinity of the cleaning seat 21, and the recovered air flow is discharged from the outlet 222 at the bottom or lower portion of the device body 22. As another example, as shown in FIG2 , the second air duct 242 is a curved air duct that connects the air outlet 2732 of the fan 273 with the air outlet 221 of the cleaning device 20. The second air duct 242 is disposed between the fan 273 and the sewage tank 25. A narrow gap extending along a first direction exists between the fan 273 and the sewage tank 25. The second air duct 242 extends along the first direction to a position adjacent to the cleaning base 21, then bends in the opposite direction a predetermined distance to connect with the air outlet 221 of the cleaning device. The air outlet 221 of the cleaning device is disposed between the sewage tank 25 and the fan 273. In some embodiments, the air outlet 221 of the cleaning device is provided with a plurality of through holes that extend generally along the first direction and are arranged on the side wall of the device body 22, for example, forming a mesh structure. The recovered air flow is discharged to the exterior of the side wall of the cleaning device through the through holes of the mesh structure. The through holes of the mesh structure can disperse the discharged air flow, preventing the concentrated downward discharge of the moist recovered air flow from wetting the cleaned surface and preventing dust from entering the interior of the cleaning device body. Designing the second air duct 242 to bend in the opposite direction near the cleaning base 21 can make the structural layout of the cleaning device more compact, and the bent air duct can also reduce the noise generated by the recycled airflow to a certain extent, thereby improving the user experience. In some embodiments, a noise reduction component is provided at at least one location in the equipment air duct, such as the first air duct and / or the second air duct, and the location of the noise reduction component is, for example, the air duct inlet, the air duct outlet, and the air duct side wall. Regarding the flow path of the recycled air flow in the cleaning device 20, especially in the first air duct 241 and the second air duct 242, please refer to Figure 7. After the fan 273 is turned on, the recycled air flow passes through the cleaning base 21, the sewage tank 25, and the first air duct 241 in sequence, enters the fan air inlet 2731 and is discharged from the fan air outlet 2732. The discharged recycled air flow is then discharged to the outside of the cleaning device 20 through the second air duct 242 and the air outlet 221 of the cleaning device 20. Due to the layout structure of the fan 273 and the sewage tank 25, the overall flow direction of the recovered air flow changes after being discharged from the air outlet of the sewage tank 25, for example, it becomes reverse. The overall flow direction here refers to the direction from the starting end of the recovered air flow entering the equipment air duct to the ending end of the exhaust equipment air duct. For example, the equipment channel through which the recovered air flow passes in the first half of the recovery path in the cleaning equipment 20 is called the front channel, and the equipment channel in the second half after the recovery path is called the rear channel. The starting end of the front channel is the sewage suction port of the cleaning seat 21, and the ending end is the air outlet of the sewage tank 25. The direction of the sewage suction port toward the air outlet of the sewage tank 25 is basically the first direction away from the cleaned surface; the starting end of the rear channel is the air inlet of the first air duct 241, and the ending end is the air outlet 221 of the cleaning equipment 20. The direction of the air inlet of the first air duct 241 toward the air outlet 221 is basically the first direction toward the cleaning surface, that is, the overall flow direction of the recovered air flow in the front channel is opposite to the overall flow direction of the recovered air flow in the rear channel. In some embodiments, under the suction force generated by the fan 273, the recycled air flows through the sewage pipe 2511 into the sewage tank 251, then enters the first air duct 241 from the air outlet at the top of the sewage tank 25 (corresponding to the filter assembly 2551 on the cover bracket 252). In some embodiments, the first support bracket 2521 is provided with a filter window 2528, which can be provided with, for example, mesh or other filter material. After entering the sewage tank 251, the recycled air flows through the filter window 2528 and reaches the air outlet at the top of the sewage tank. Filtering through the filter window 2528 reduces impurities carried by the recycled air flow, thereby minimizing damage to the fan 273. In some embodiments, a filter assembly 2551 is provided at the end of the cover bracket 252 near the sewage tank opening. The recycled air flows through the filter assembly 2551 before entering the first air duct 241. Filtering through the filter element 2551 further reduces impurities carried by the recycled air flow, thereby minimizing damage to the fan 273. The cleaning device provided by the embodiment of the present invention can make the structural layout of the cleaning device more compact and save space through the bent first air duct. At the same time, it can also lower the center of gravity of the cleaning device, making it easier for the user to hold and operate it. In addition, by making the working airflow change its direction multiple times inside the cleaning device, it can reduce the noise generated by the airflow flow to a certain extent, thereby improving the user experience. Please refer to Figures 3 to 5 . As shown in Figure 3 , the sewage tank 25 includes a sewage tank body 251 and a cover bracket 252. The sewage tank body 251 is configured to accommodate recovered sewage. The sewage tank body 251 is mounted on at least the lower half of the cover bracket 252 and is detachably connected to the cover bracket 252. The sewage tank body 251 includes a sewage tank opening 2513 and a sewage tank bottom surface 2514, as shown in Figure 4 . As shown in FIG4 , the sewage tank 251 includes a sewage pipe 2511 extending along the bottom surface 2514 of the sewage tank toward the sewage tank opening 2513. The pipe is configured to allow sewage from the cleaning roller brush 211 to enter the sewage tank 251 through the sewage pipe 2511 under the action of the fan 273. The sewage tank 251 also includes a protruding handle 2512 for easy manipulation when assembling or removing the sewage tank 25. In some embodiments, as shown in FIG5 , the cover bracket 252 includes a first support frame 2521, a second support frame 2522, and a third support frame 2523. The first support frame 2521 extends along the longitudinal direction (first direction) of the sewage tank 251. The second support frame 2522 extends at a predetermined angle to the first support frame 2521, for example, in a substantially perpendicular direction (second direction). The third support frame 2523 extends at a predetermined angle to the first support frame 2521, for example, in a substantially perpendicular direction (second direction). The third support frame 2523 and the second support frame 2522 may be symmetrical, for example, symmetrical about the first support frame 2521 in the first direction. In some embodiments, the first, second, and third support frames 2521, 2522, and 2523 are integrally formed, and the transitions between the first and second support frames 2521, and between the first and third support frames 2521, 2523, may be formed by smooth curves or corners. The first support frame 2521 , the second support frame 2522 and the third support frame 2523 generally form a U-shaped structure to improve the stability and strength of the cover bracket 252 . The cover bracket 252 further includes: a first float and a second float, wherein the first float is arranged on one side of the cover bracket 252, and the second float is symmetrically arranged on the other side of the cover bracket 252. Specifically, the first float is arranged on the second support frame 2522, and the second float is arranged on the third support frame 2523, and both the first float and the second float can rotate between the first position and the second position. Figure 6 primarily illustrates the relationship between the second float 2541 and its associated components. It should be understood that the relationship between the first float (not shown) and its associated components is similar and will not be further described. Specifically, both the first and second floats 2541 can independently move with changes in the water level. For example, when the water level is below the second float 2541, the second float 2541 is not affected by buoyancy and is in its lowest position (the first position in Figure 5). When the water level rises to contact the second float 2541, the second float 2541 begins to experience buoyancy, allowing it to move with the water level. As the water level continues to rise, due to structural constraints, the second float 2541 reaches its highest position (the second position in Figure 5). The first and second floats 2541 operate on the same principle; specifically, both floats pivot. In some embodiments, the first float and the second float 2541 use small floats. The small floats take up little space and are low in cost, which can increase the amount of sewage that can be accommodated in the sewage tank. Since the small floats are small in size, the volume of the floats immersed in the sewage will be very small, which has little impact on the volume of sewage contained in the sewage tank 25. Combined with the left-right symmetrical structure, the difference in water volume when triggered front, back, left and right can be small. In addition, the small floats can increase the sensitivity of the float's rotation, thereby increasing the sensitivity of detection. In some embodiments, the first and second floats 2541 are configured to cooperate with a first sensing element (not shown) secured to the device body 22 to monitor whether the wastewater tank 25 is properly installed. Specifically, the first float includes a second sensing element, and the second float includes a third sensing element. In one embodiment, the first sensing element can include one, two, or more components. When the first sensing element includes two or more components, they can be located at different locations within the device body to interact with the second and third sensing elements to generate sensing signals. When the wastewater tank 25 is installed in the device body 22, the first and second floats 2541 are in the first position, and the second and / or third sensing elements generate sensing signals with the first sensing element. These sensing signals are used to indicate that the wastewater tank 25 is properly installed. Conversely, when the wastewater tank 25 is not installed or improperly installed in the device body 22, the second and / or third sensing elements do not generate sensing signals with the first sensing element, thereby providing a warning message, prompting the user to reinstall the wastewater tank 25. In some embodiments, the first sensing element is disposed on the device body corresponding to when the first float and the second float are in the first position. The first float and the second float are configured to work in conjunction with the first sensing element disposed on the device body 22 to monitor the water level in the sewage tank 251. As an embodiment, the first sensing element and the first float and / or the second float can generate sensing signals of different strengths corresponding to different distances within a certain distance range. For example, the strength of the sensing signal decreases as the distance increases. For example, the first sensing component can generate sensing signals from strong to weak within a distance range of 1cm-3cm. When the distance is less than 1cm, the sensing signal strength remains unchanged. When the distance is greater than 3cm, the sensing signal decays to 0. Therefore, different distance ranges can be defined as threshold ranges. The above distance ranges can be specific distance values, such as 1cm and 3cm. Different distance ranges can be continuous or discontinuous. A specific example is given below using a continuous distance range. For example, within the range of 1cm-3cm, two distance ranges of 1cm-2cm and 2cm-3cm are formed with 2cm as the boundary. The detection threshold ranges are used to monitor whether the sewage tank is in place and full of water. When the sewage tank 25 is installed on the device body 22, the first float and the second float 2541 are located in the first position, and the second sensing element and / or the third sensing element are respectively at a first distance from the first sensing element, for example, 2.5 cm, which meets the detection threshold range of 2 cm-3 cm. The information that the sewage tank 25 is in place is given based on the intensity of the sensing signal generated by the first sensing element; when the sewage tank 25 is full of water, the first float and the second float 2541 are located in the second position, and the second sensing element and / or the third sensing element are respectively at a second distance from the first sensing element, for example, 1.5 cm, which meets the detection threshold range of 1 cm-2 cm. The information that the sewage tank 25 is full of water is given based on the intensity of the sensing signal generated by the first sensing element; the same applies to discontinuous distance ranges. In some embodiments, the first sensing element includes two sets of sensing elements. The first set of sensing elements is disposed on the device body corresponding to when the first and second floats are in the first position, and the second set of sensing elements is disposed on the device body corresponding to when the first and second floats are in the second position. The two sets of sensing elements work in conjunction with the first and / or second floats, respectively, to detect when the sewage tank 25 is full. Specifically, the first float includes a second sensing element, and the second float includes a third sensing element. When the sewage tank 25 is assembled with the device body 22, the first and second floats 2541 are in the first position. The second and / or third sensing elements, respectively, generate a first sensing signal with the first set of sensing elements. The first sensing signal is used to indicate that the sewage tank 25 is assembled properly. When the sewage in the sewage tank 25 reaches a predetermined position, such as a predetermined position where the first and / or second floats reach the second position, the second and / or third sensing elements, respectively, generate a second sensing signal with the second set of sensing elements. The second sensing signal is used to indicate that the sewage tank 25 is full, thereby prompting the user to take appropriate measures. In some embodiments, as long as one of the first and second floats emits the second sensing signal, the sewage tank 25 can be determined to be full. For example, if one of the floats is blocked or stuck and cannot float, the other float will float normally, providing an alarm for a full water signal and thus preventing sewage overflow. In some embodiments, the first float includes a second sensing element, and the second float includes a third sensing element. When the sewage in the sewage tank has not reached a predetermined position, the second and / or third sensing elements are in a first position. In response to the sewage tank being mounted on the device body, at least one of the second and / or third sensing elements generates a sensing signal with the first sensing element, and information indicating that the sewage tank is fully mounted is provided based on the first sensing signal. When the sewage in the sewage tank reaches a predetermined position, at least one of the second and / or third sensing elements reaches a second position due to the buoyancy of the sewage. The distance between the second and / or third sensing elements and the first sensing element increases, causing the sensing signal to disappear. Information indicating that the sewage tank is fully loaded is provided based on the disappearance of the sensing signal. This configuration achieves both full-water and fully mounted detection functions with only one detection position (corresponding to the first position) without requiring additional modifications to the Hall effect sensor's judgment circuitry. This simplifies the detection logic, improves detection efficiency, and reduces the cost of the detection circuitry. In some embodiments, the detection of sewage tank assembly anomalies can be achieved by comparing two symmetrical floats: a first float and a second float. Specifically, if only one float generates a sensing signal, or if the difference between the sensing signals generated by the first and second floats exceeds a preset threshold, the sewage tank assembly is determined to be abnormal and not properly assembled, prompting the user to take corrective action. In some embodiments, single-side float blockage detection can be achieved by comparing the sensing signals of two symmetrical floats: the first and second floats. Specifically, when the difference in the sensing signals generated by the first and second floats exceeds a preset threshold, it can be determined that the float on one side is blocked, prompting the user to take corrective action. In some embodiments, as an example, the first sensing element includes but is not limited to a Hall element, such as a Hall plate and a Hall sensing element, and the second sensing element and the third sensing element include but are not limited to magnets. In some embodiments, the cover bracket 252 further includes a first float cover 2533 and a second float cover 2543. The first float cover 2533 is pivotally mounted on one side of the cover bracket 252, while the second float cover 2543 is pivotally mounted on the other side of the cover bracket 252. When the first float cover 2533 and the second float cover 2543 are engaged with the cover bracket 252, the first float cover 2533 covers the first float, and the second float cover 2543 covers the second float 2541. The float covers protect the floats by preventing debris in the sewage from clogging the floats or affecting their response to water level changes. In some embodiments, as shown in FIG6 , at least one locking member 2534, such as a snap, is provided on the edge of each of the first and second float covers 2533 and 2543. At least one locking member 2524, such as a snap-fitting groove, is provided at a corresponding position on the cover bracket 252. Through the cooperation of the locking member 2534 and the locking member 2524 , the first float cover 2533 and the second float cover 2543 can be buckled with the cover bracket 252 to enhance the protection of the first float and the second float. In some embodiments, the first float cover 2533 and the second float cover 2543 are respectively provided with a plurality of first through holes 2544. Sewage in the sewage tank 25 can flow in or out through the first through holes 2544, so that the first float and the second float can quickly respond to the sewage water level. In some embodiments, the second float 2541 includes a second rotation shaft 2542, and the second float 2541 can rotate between a first position and a second position around the second rotation shaft 2542. Similarly, the first float includes a first rotation shaft, and the first float can freely rotate between a first position and a second position around the first rotation shaft. In some embodiments, the cover bracket 252 further includes a filter net bag 2525, which extends substantially in the same direction as the first support frame 2521. In some embodiments, the filter net bag 2525 and the first support frame 2521 are integrally formed. This integral molding can increase the overall strength and durability of the cover bracket 252 structure. The filter net bag 2525 and the first support frame 2521 can also be detachably connected, making it easier for the user to clean them and also allowing them to be replaced as consumables. The filter net bag 2525 can also be integrally formed with the first support frame 2521, the second support frame 2522, and the third support frame 2523, further increasing the strength and durability of the cover bracket 252. The filter net 2525 is disposed at a first end of the cover bracket 252, facing the bottom surface of the sewage tank 251. The filter net 2525 extends generally from the bottom surface of the cover bracket 252 toward the bottom surface of the sewage tank 251. When the sewage tank 25 is in the assembled position, the filter net 2525 extends generally in a first direction. When sewage enters the sewage tank 251, the filter net 2525 is aligned with the flow direction of the sewage. This reduces resistance to the sewage entering the sewage tank 251 and prevents impurities in the sewage from being caught by the filter net 2525. When the sewage tank 25 is removed to empty the sewage, the user can choose whether to use the filter net 2525 to filter the sewage according to the specific needs of the environment. Specifically, when using the filter net 2525 to filter sewage, the user can grasp the second end 255 of the cover bracket 252 so that the receiving surface of the filter net 2525 faces the direction of sewage pouring. For example, the filter net bag 2525 can filter sewage within a preset angle range with the horizontal direction. For example, the extended surface of the filter net bag 2525 forms a preset angle range of 0-90 degrees with the horizontal direction, which is convenient for the user to perform filtering operations when filtering sewage is needed. In some embodiments, as shown in FIG5 , the filter net bag 2525 further includes a recessed portion 2526, the opening of which is oriented opposite to the direction in which the second support frame 2522 extends. In the assembled position, the recessed portion 2526 of the filter net bag 2525 faces the outside of the device body 22, facilitating ease of use. Optionally, the filter net bag can be formed from a hard material, such as hard plastic, hard organic material, or metal, to enhance the rigidity of the filter net bag 2525 during filtration. In some embodiments, the filter net 2525 further includes a plurality of second through holes 2527. In some embodiments, the openings of the second through holes 2527 are larger than the openings of the first through holes 2544. Selecting different opening sizes can filter out debris of different sizes in the sewage. The larger openings of the second through holes 2527 facilitate rapid filtration and flow of sewage, while the smaller openings of the first through holes 2544 only allow water to enter the float cover. When the sewage tank 25 is full of water, the user removes it from the cleaning device body 22 and takes out the cover bracket 252 from the sewage tank body 251. If the user thinks it is necessary to filter the sewage before dumping it, one way is to place the cover bracket 252 horizontally so that the filter net bag 2525 is located below the sewage outlet of the sewage tank body 251. In this way, after the sewage flows out of the sewage tank body 251, it can pass through the recess 2526 of the filter net bag 2525 and discharge the liquid through the second through hole 2527, thereby filtering most of the debris in the sewage and preventing large volumes of debris from being directly dumped into the drainage location (such as the sewer, toilet), causing blockage in the drainage location. The filter net bag 2525 has the same overall extension direction as the cover bracket 252. The recess 2526 is shallow and has a smooth shape. Compared with the structure in which there is a certain angle between the gripping part and the filtering part, it is more convenient for the user to dump the filtered debris and garbage, and the user experience is easier. Similarly, it is also easier in the subsequent cleaning process. The filter net bag extending longitudinally along the sewage tank body reduces the space occupied in the sewage tank body during assembly, is not easy to hang impurities, and can selectively use the filtering function when dumping sewage. The operation is simple and flexible, which improves the practicality of the filter bracket. In some embodiments, the cover support 252 may further include a filter window 2528, for example, which may be provided with a mesh or other filter material. The filter window 2528 is disposed on the first support frame 2521 and configured to filter gas. Gas can pass through the first support frame 2521 via the filter window 2528, and during the gas flow, particulate matter carried by the gas can be blocked by the filter window 2528, thereby achieving coarse filtration of the gas. The filter window 2528 is set on the first support frame 2521. When dumping sewage, the first support frame 2521 needs to be removed from the sewage tank. At this time, the filter window 2528 set on the first support frame 2521 is located in a position that is easy for the user to see, that is, easy for the user to feel, which can achieve the effect of reminding the user to clean the dirt attached to the filter window 2528 in time. In addition, the filter window 2528 is located close to the filter net bag 2525, so that the user can rinse the filter window 2528 and the filter net bag 2525 together when cleaning. Optionally, the filter window 2528 can be a single structure or a two-petal structure or other multi-petal structure, which is not limited to this. In some embodiments, the cleaning device 20 also includes a power source, which is configured to generate an airflow moving in the same direction in the cleaning device. The airflow carries the sewage (including solid waste) on the cleaning surface into the cleaning device 20 for recycling, and therefore the airflow is defined as a recycling airflow. The airflow path of the recovered airflow flowing through the cleaning device 20 is formed by the device air duct, and the entire airflow path passes through at least the sewage suction port and the dirt collection part (i.e., the sewage bucket) and the power source of the cleaning device 20 in sequence, that is, the device air duct at least includes the sewage suction port, the dirt collection part (i.e., the sewage bucket) and the power source; the recovered airflow flowing out of the dirt collection part does not carry sewage, therefore, the airflow path defined by the sewage suction port and the dirt collection part is defined as the recovery path. The power source can specifically be a suction source, such as a fan, which is arranged in the equipment body 22 and configured to allow gas to circulate in the equipment air duct to form a recovery airflow, providing suction power for sewage recovery; the sewage recovery pipeline connects the sewage suction port and the sewage tank 25, thereby forming a part of the equipment air duct. Under the action of the suction force generated by the fan, the sewage is sucked into the sewage tank 25 through the sewage recovery pipeline. In some embodiments, as shown in Figure 5, the cover bracket 252 further includes a second end 255 opposite the first end, with the second end 255 positioned adjacent to the opening of the sewage tank 251. The cover bracket 252 further includes a filter element 2551 disposed at the second end 255. The filter element 2551 is configured to allow the recycled air flow to flow through the sewage pipe 2511, the filter window 2528, and the filter assembly 2551. The recycled air flow is first filtered through the filter window 2528 and then filtered through the filter element 2551 before entering the blower. This ensures that the air entering the blower is free of impurities and reduces damage to the blower. Optionally, the filter assembly 2551 is constructed from multiple layers of filter cotton or multiple layers of gauze. Either the filter window 2528 or the filter element 2551 may be provided with gauze. Alternatively, both the filter window 2528 and the filter element 2551 may be provided with gauze to enhance filtering performance. In some embodiments, the cover bracket further includes a sewage tank assembly portion 2552 circumferentially extending at the second end 255 and configured to engage with the opening of the sewage tank 251 . In the related art, the clean water tank and / or sewage tank of the cleaning equipment often leaks liquid due to improper installation, excessive water level, etc., which not only causes secondary contamination of the cleaned ground, but also poses a safety hazard. To this end, this embodiment provides a cleaning device, which is equipped with a water receiving structure. Through the first chassis and its first liquid leakage port, when liquid leaks from the clean water tank placed on the first chassis, the liquid can be guided to the sewage suction channel, or, through the second chassis and its second liquid leakage port, the liquid leaked in the sewage tank can also be guided to the sewage suction channel, thereby reducing the risk of leaked liquid spilling outside the cleaning device and also reducing safety hazards. Specifically, as shown in FIG8 , this embodiment provides a cleaning device. The same structure can be referred to in the above embodiment, which will not be described in detail here. The cleaning device includes an equipment body 22, which extends longitudinally along a first direction. The equipment body 22 includes a clean water tank accommodating portion 224 and a sewage tank accommodating portion 225. The clean water tank accommodating portion 224 is configured to accommodate a clean water tank 26, and the sewage tank accommodating portion 225 is configured to accommodate a sewage tank 25. The clean water tank accommodating portion 224 includes: a first chassis 2211, configured to carry the clean water tank 26, wherein the first chassis 2211 includes at least one first leakage port 22111 and a first protrusion 22112. As shown in Figure 9, the first protrusion 22112 is arranged around the first chassis 2211. The first protrusion 22112 is used to stop the clean water tank 26 to prevent the clean water tank 26 from shaking or dislocating, and at the same time prevent liquid missed by the clean water tank 26 from flowing out of the first chassis 2211. There is at least one first leakage port 22111, for example, 2, 3, 4 or more. When there are an even number of them, they can be symmetrically arranged on both sides of the first chassis 2211. The shape of the first leakage port is not limited, for example, it can be a circular hole, a square hole or a strip hole; the sewage tank accommodating portion 225 includes a sewage tank accommodating portion side wall 2221, which extends from the top end to the bottom end of the sewage tank accommodating portion along the first direction, and the top end of the sewage tank accommodating portion side wall 2221 is fluidly connected to the first leakage port 22111, and is configured to allow the liquid leaked from the clean water tank 26 to flow out through the first leakage port 22111 and then flow down along the sewage tank accommodating portion side wall 2221; as shown in Figure 11, the sewage tank accommodating portion side wall 2221 is provided with a folded edge 22212 on two side edges along the first direction facing the inner side surface of the sewage tank 25, and the angle between the folded edge 22212 and the inner side surface is a right angle or an obtuse angle, which can prevent the liquid from flowing out of the sewage tank accommodating portion. In some other embodiments, a liquid conducting groove 22211 is provided on the edge of the side wall 2221 of the sewage tank accommodating portion. The liquid conducting groove 22211 extends along the first direction on the side wall 2221 of the sewage tank accommodating portion toward the outside of the sewage tank 25 or away from the inside of the sewage tank 25. The liquid conducting groove 22211 can be provided on the edge or middle of the side wall 2221 of the sewage tank accommodating portion, or can be an integrally molded structure on the side wall 2221 of the sewage tank accommodating portion, or can be a separately provided device. Schematically, as shown in Figure 10, the liquid guide groove 22211 can be arranged on one side or both sides of the edge of the side wall 2221 of the sewage tank accommodating portion. The liquid guide groove 22211 can be arranged along the side wall 2221 of the sewage tank accommodating portion to form an inwardly recessed groove that passes through from top to bottom, or it can be arranged on the side wall 2221 of the sewage tank accommodating portion. A tubular liquid guide groove 22211 passes through from top to bottom; wherein, the first liquid leakage port 22111 is connected to the liquid guide groove 22211, and is configured to collect the liquid leaked from the clean water tank 26 through the first liquid leakage port 22111 and the liquid guide groove 22211. In some embodiments, in combination with Figures 11 and 10, the equipment body 22 may further include a water receiving structure 223, which connects the first chassis 2211 and the side wall 2221 of the sewage tank accommodating portion. The liquid leaked from the clean water tank 26 is discharged through the first leakage port 22111, the water receiving structure 223 and the side wall 2221 of the sewage tank accommodating portion. The water receiving structure 223, the first chassis 2211 and the side wall 2221 of the sewage tank accommodating portion may be an integral structure or a detachable connection. In some embodiments, the water receiving structure 223 includes a water receiving structure body 2231, a water receiving trough 2232, and an air duct opening 2234. The water receiving structure body 2231 is a sloped structure when assembled, tilted to interface with the filter element 2551 of the sewage tank. The air duct opening 2234 communicates with the fan 273 and is configured to engage with the air outlet of the sewage tank 25 to allow for the passage of recycled air. A pair of water receiving troughs 2232 are symmetrically positioned on either side of the water receiving structure body 2231. Liquid leaking from the clean water tank flows into the water receiving troughs 2232 through the first liquid leakage port 22111. In some embodiments, the cross-section of the water receiving trough 2232 in the first direction is roughly triangular in structure to match the inclined surface structure of the water receiving structure body 2231, so that the top of the water receiving trough 2232 is roughly horizontal, thereby stably receiving the clean water tank. The water receiving trough 2232 includes side walls, an inclined bottom surface 2233, and a water receiving trough hole 22321. The water receiving trough hole 22321 is set in the inclined bottom surface 2233. Optionally, the water receiving trough hole 22321 is set at the lowest position of the inclined bottom surface 2233 to facilitate liquid discharge. The water receiving trough hole 22321 is connected to the liquid guide groove 22211 of the side wall 2221 of the sewage tank accommodating portion. Liquid flowing into the water receiving trough 2232 flows into the liquid guide groove 22211 through the inclined bottom surface 2233 and the water receiving trough hole 22321. In some embodiments, as shown in Figure 12, the sewage tank accommodating portion 225 further includes a second chassis 2222, which is integrally connected or detachably connected to the side wall 2221 of the sewage tank accommodating portion. The second chassis 2222 is configured to carry the sewage tank 25, wherein the second chassis 2222 includes at least one second leakage port 22221 and a second protrusion 2225. The second protrusion 2225 is used to stop the sewage tank 25 to prevent the sewage tank 25 from shaking or dislocating, and at the same time prevent the liquid leaked from the sewage tank 25 from flowing out of the second chassis 2222. The shape and number of the second leakage port 22221 are not limited, and the shape can be, for example, a round hole, a square hole, or a strip hole. In some embodiments, as shown in Figure 13, the cleaning device 20 also includes a sewage suction channel 2223, which runs through the second chassis 2222 and is connected to the sewage tank 25. The sewage suction channel 2223 is configured to connect the sewage suction port with the sewage tank 25 fluid, so that the sewage enters the sewage suction port and then enters the sewage tank 25 through the sewage suction channel 2223; the cleaning device 20 also includes a guide channel 2224, which connects the liquid guide groove 22211, the second liquid leakage port 22221 and the sewage suction channel 2223. The guide channel 2224 flows the liquid flowing out of the liquid guide groove 22211 and the liquid flowing out of the second liquid leakage port 22221 into the sewage suction channel 2223 through the guide channel 2224, so that the liquid missed from the clean water tank and the liquid missed from the sewage tank can be introduced into the sewage suction channel 2223, and then sucked into the sewage tank 25 through the sewage suction channel 2223. In some embodiments, the liquid guiding groove 22211 guides the liquid flowing down from the first bottom plate 2211 to the second bottom plate 2222 or directly introduces it into the guiding channel 2224 , and the liquid at the second bottom plate 2222 flows into the guiding channel 2224 through the second liquid leakage port 22221 . In some embodiments, the diversion channel 2224 refers to any channel structure capable of achieving fluid communication with the sewage suction channel 2223. It can be an independent structural element or component, or it can be formed by utilizing the space between various components. For example, the diversion channel 2224 can be a pipe directly connected to the sewage suction channel 2223 at one end and directly connected to the second liquid leakage port 22221 and / or the liquid guide groove 22211 at the other end. The diversion channel 2224 can also be implemented as follows (not shown in the figure): the liquid flowing out of the second liquid leakage port 22221 and / or the liquid guide groove 22211 is collected in a liquid collection device, and a pipeline is provided between the liquid collection device and the sewage suction channel 2223 to connect the two fluids. The negative pressure in the sewage suction channel 2223 causes the liquid in the liquid collection device to be recovered into the sewage suction channel 2223. In some embodiments, as shown in Figure 14, the clean water tank accommodating portion 221 is provided with a handle disassembly structure, which is located on the inner wall of the clean water tank accommodating portion 221 and is configured to disassemble the cleaning equipment handle 23 after pressing. When the clean water tank 26 is assembled to the clean water tank accommodating portion 221, the handle disassembly structure is blocked and covered to prevent the handle from falling off due to misoperation. Specifically, the handle disassembly structure includes a pressing chamber 2213, which is integrally formed on the inner wall of the clean water tank accommodating portion 221. For example, the inner wall of the clean water tank accommodating portion 221 is recessed inward to form a groove to form the pressing chamber 2213. The handle disassembly structure also includes a pressing portion 2212, which is arranged to fit the inner wall of the clean water tank accommodating portion 221 and basically covers the pressing chamber 2213. The pressing portion 2212 can be formed of a material with pressing elasticity; the handle disassembly structure also includes a buttress 2214, which is connected to the pressing portion 2212. The pressing portion 2212 and the buttress 2214 can be integrally formed or separately formed. Under the pressure of the pressing portion 2212, one end of the buttress 2214 presses against the locking protrusion 2215 of the cleaning device handle, thereby unlocking the cleaning device handle 23 from the device body 22 so that it can be removed by the user. Compared to the common method of installing a socket on the body and using a specially shaped tool (such as a pin) to trigger disassembly, this method allows for easy disassembly by simply pressing. Furthermore, the pressing portion 2212 is located behind the fresh water tank to prevent accidental triggering during use. Optionally, a return spring 2216 can be provided between the abutment portion 2214 and the bottom of the pressing chamber 2213 to provide elastic reset. In the related art, when the cleaning equipment is working, the water in the clean water tank is pumped out by a water pump and distributed to the brush head or the surface to be cleaned. Ideally, the water needs to be evenly distributed on the brush head or the surface to be cleaned. However, due to the difference in water pressure, the current water channel structure cannot evenly distribute the water on the brush head or the surface to be cleaned, resulting in some brush heads or surfaces to be cleaned having too much water in some areas, wasting water resources, while some brush heads or surfaces to be cleaned have too little water in some areas, making it impossible to ensure the cleanliness of the floor. Some embodiments of the present invention provide a cleaning device, which configures a liquid distribution joint in the liquid supply pipeline structure of the cleaning seat. The liquid distribution joint has multiple liquid outlets, and the closer the liquid outlet is to the liquid inlet, the larger the diameter is, so that the water flowing out of the multiple liquid outlets has a flow rate as uniform as possible, so that the liquid distributed to the brush head or the surface to be cleaned is uniform. Specifically, as shown in Figure 15, the cleaning device includes a device housing, which includes a cleaning base 21 and a device body 22. The cleaning base 21 is pivotally connected to the device body 22. A cleaning roller brush 211 is disposed in the cleaning base 21, and the cleaning roller brush 211 rotates to clean the floor. The cleaning roller brush can be installed in a rotationally engaged manner. Specifically, an end cap is disposed at the end of the cleaning roller brush. When the cleaning roller brush is fully inserted into the drive end, the end cap is rotated in the engagement direction to achieve the engagement connection between the cleaning roller brush and the cleaning base 21. The end cap is rotated in a release direction opposite to the engagement direction to release the engagement connection between the cleaning roller brush and the cleaning base 21. When the cleaning device is performing a cleaning operation, if the rotation direction of the cleaning roller brush is opposite to the engagement direction of the end cap, the cleaning roller brush may be easily released during the cleaning operation, which may cause the cleaning roller brush to fall off. Therefore, the engagement direction of the cleaning roller brush can be set to the rotation direction of the cleaning roller brush during the cleaning operation to prevent the cleaning roller brush from being released during normal operation. The cleaning equipment also includes a liquid supply system, which includes a liquid storage device, a liquid supply pipeline, a liquid supply power source, and a liquid distributor. The liquid storage device is used to store cleaning liquid and can be implemented as one, two, or more containers, or a container with two or more chambers, or a combination of the aforementioned containers. The liquid supply power source is a device that provides power for the flow of cleaning liquid, such as a water pump. The liquid distributor is a device that distributes cleaning liquid to the cleaning roller brush and / or the surface being cleaned. The liquid supply pipeline is the pipe through which the cleaning liquid flows from the liquid storage device to the liquid distributor under the power provided by the liquid supply power source. In some embodiments, the liquid storage device comprises two or more containers or chambers, at least one of which is used to hold clean water, while the remaining containers or chambers are used to hold detergents or other cleaning agents to enhance cleaning performance. Specifically, as shown in FIG1 , a clean water tank 26 is disposed on the device body 22 and is configured to hold clean water; as shown in FIG16 , a detergent cartridge 214 is disposed within the cleaning base 21 and is configured to hold detergent. The clean water and detergent are mixed in the liquid supply line and then distributed to the cleaning roller brush 211 and / or the surface being cleaned via a liquid distributor. Since the structure of the liquid distributor needs to correspond to the cleaning roller brush 211 to ensure uniform water distribution, the liquid distributor includes four liquid inlets. In view of the liquid inlet structure of the liquid distributor, the liquid supply pipeline in the cleaning seat 21 includes a liquid distribution joint 215, which is configured to distribute the cleaning liquid mixed with clean water and detergent. The liquid distribution joint 215 includes a liquid inlet 21511 for the mixed cleaning liquid to flow into, and at least two liquid outlets. The closer the at least two liquid outlets are to the liquid inlet, the larger the diameter. In some embodiments, as shown in Figure 17, the liquid dispensing joint 215 includes: a main liquid pipe 2151, a first end of which is a liquid inlet 21511 for the mixed cleaning liquid to flow in, and a second end of which is a closed structure 21512. The liquid dispensing pipes 2152 are connected to the main liquid pipe 2151 approximately vertically, and each of the liquid dispensing pipes 2152 includes a liquid outlet. In some embodiments, the liquid dispensing pipes 2152 have substantially the same outer diameter and different inner diameters. Substantially the same means, for example, that the difference between the two values ​​is less than or equal to 15% (for example, the larger of the two values ​​is used as a reference value), for example, 5%. In some embodiments, the liquid dispensing pipes 2152 include a first liquid dispensing pipe 21521, a second liquid dispensing pipe 21522, a third liquid dispensing pipe 21523, and a fourth liquid dispensing pipe 21524, which are arranged in sequence from the first end to the second end of the main liquid pipe 2151. The first dispensing tube 21521 delivers liquid to the first roller brush via the second dispensing tube 2142. The second dispensing tube 21522 delivers liquid to the second roller brush via the third dispensing tube 2143. The third dispensing tube 21523 delivers liquid to the third roller brush via the fourth dispensing tube 2144. The fourth dispensing tube 21524 delivers liquid to the first roller brush via the fifth dispensing tube 2145. The inner diameters of the first, second, third, and fourth dispensing tubes 21521, 21522, 21523, and 21524 are arranged from thick to thin. In some embodiments, the inner diameter of the first dispensing tube 21521 is 1.35-1.45 mm; the inner diameter of the second dispensing tube 21522 is 1.25-1.35 mm; the inner diameter of the third dispensing tube 21523 is 1.15-1.25 mm; and the inner diameter of the fourth dispensing tube 21524 is 1.05-1.15 mm. Since the second end of the main liquid pipe 2151 is a closed structure, the hydraulic pressure in the main liquid pipe 2151 increases from small to large along the direction from the first end to the second end. When the inner diameters of the first liquid distribution pipe 21521, the second liquid distribution pipe 21522, the third liquid distribution pipe 21523 and the fourth liquid distribution pipe 21524 are arranged from thick to thin, it can ensure that the amount of liquid flowing out of the first liquid distribution pipe 21521, the second liquid distribution pipe 21522, the third liquid distribution pipe 21523 and the fourth liquid distribution pipe 21524 is uniform, thereby ensuring that the amount of liquid obtained by the first roller brush, the second roller brush and the third roller brush is basically the same, making the roller brush cleaning process more uniform and no stains remaining due to excessive liquid. In some embodiments, as shown in Figure 18, the cleaning base 21 further includes a first roller brush accommodating portion 216 configured to accommodate the first roller brush; a second roller brush accommodating portion 217 configured to accommodate the second roller brush; and a third roller brush accommodating portion 218 configured to accommodate the third roller brush. The outlet of the liquid dispensing connector 215 distributes the cleaning liquid to the first, second, and third roller brushes via liquid pipes. For example, the first liquid dispensing pipe 21521 delivers cleaning liquid to the first roller brush via the second liquid pipe 2142, the second liquid dispensing pipe 21522 delivers cleaning liquid to the second roller brush via the third liquid pipe 2143, the third liquid dispensing pipe 21523 delivers cleaning liquid to the third roller brush via the fourth liquid pipe 2144, and the fourth liquid dispensing pipe 21524 delivers cleaning liquid to the first roller brush via the fifth liquid pipe 2145. As an example, the first roller brush is independently positioned along the width of the cleaning base 21, while the second and third roller brushes are adjacent to each other along the width of the cleaning base 21. This means that the combined length of the second and third roller brushes is approximately equal to the length of the first roller brush. The first roller brush, the second roller brush and the third roller brush are driven by the motor to rotate and clean the floor. In some embodiments, as shown in Figures 18-19, the first roller brush accommodating portion 216 includes a first scraper 2161, which extends along the length direction of the first roller brush and roughly matches the length of the first roller brush, that is, the first scraper 2161 extends from one end of the first roller brush to the other end in a direction parallel to the first roller brush. The first scraper 2161 is used to scrape dirt on the first roller brush. Similarly, the second roller brush and the third roller brush are also provided with scrapers with the same function at corresponding positions near the entrance of the suction channel; the second scraper 2162 extends along the length direction of the first roller brush and partially matches the first roller brush. Optionally, the second scraper 2162 is roughly located in the center of the length direction of the first roller brush. Since the driving devices of the second and third roller brushes are located in the center, more water marks will remain in the center of the cleaning surface covered by the roller brush when the cleaning device 20 is pulled backward (that is, opposite to the X direction). By providing the second scraper 2162, the water marks remaining in the weak position (central position) of the cleaning surface covered by the roller brush can be reduced. The second roller brush housing 217 includes a third scraper 2171, which extends along the length of the second roller brush and partially mates with the second roller brush. Optionally, the third scraper 2171 is located at the outer edge of the second roller brush housing 217. The third roller brush housing 218 includes a fourth scraper 2181, which extends along the length of the third roller brush and partially mates with the third roller brush. Optionally, the fourth scraper 2181 is located at the outer edge of the third roller brush housing 218 to reduce water marks left at the weak points (edges) where the roller brush covers the cleaning surface. Because the drive mechanism of the first roller brush is located at the edge of the first roller brush, this can result in a significant amount of water marks left at the edge of the cleaning surface when the cleaning device 20 is pulled forward (i.e., in the X direction). The third and fourth scrapers 2171, 2181 can reduce these water marks left at the weak points (edges) where the roller brush covers the cleaning surface. The first scraper 2161 roughly matches the length of the first roller brush, for example, the difference between the length of the first scraper 2161 and the length of the first roller brush is less than or equal to 15% (for example, the larger of the two length values ​​is used as a reference value), for example, 5%. In some embodiments, a scraping blade (not shown) is further provided on the bottom surface of the cleaning base 21 for interfering with and scraping the surface being cleaned. The scraping blade is located near the rear side (in the X direction) of the first roller brush and can be fixedly or movably connected to the cleaning base 21. The movably connected connection can include a pivotal connection, an elastic connection, or a height-adjustable connection. The scraping blade can have a length corresponding to that of the first roller brush, for example, the same length. In some embodiments, as shown in Figure 20, the cleaning base 21 further includes a sewage suction channel 2223 configured to transport sewage extracted from between the first, second, and third roller brushes to the sewage tank 25. The entrance of the sewage suction channel is located between the first, second, and third roller brushes. As shown by the arrows in Figure 20, the channel extends to the top of the roller brushes, then bends approximately 90 degrees backward (i.e., toward the device body 22 and opposite the X-direction) toward the device body, then bends upward approximately 90 degrees before entering the sewage tank. The design of the sewage suction channel allows the device body 22 and the cleaning base 21 to achieve an angle of slightly less than 90 degrees in the X-direction, thereby achieving the upright locking function of the cleaning device. In some embodiments, as shown in FIG15 , the front edge positions on both sides of the cleaning base 21 also include freely rotatable front impact rollers 212. During cleaning operations, if the cleaning base 21 collides with an obstacle, such as furniture or a wall, the rotation of the rollers generates a buffer, thereby reducing the collision force and avoiding damage to the cleaning equipment and the collided object. In this embodiment of the present invention, a liquid distributor is configured within the liquid supply piping structure of the cleaning base. The distributor has multiple liquid outlets, with the outlets having larger diameters the closer they are to the liquid inlet. This ensures that the liquid flow from the multiple outlets is as uniform as possible, ensuring that the amount of liquid distributed to the brush head or surface to be cleaned is as even as possible. Furthermore, a scraper is provided at locations where the roller brush is relatively weakly covered to remove contaminated water from the roller brush surface, preventing excess water marks in those locations. As shown in FIG21 , the present invention further provides a cleaning system 100 , which includes a pile body 10 and the cleaning device 20 of the aforementioned embodiment. The pile body 10 is configured to support the cleaning device 20 . FIG22 is a schematic diagram of an exploded view of a pile body 10 according to some embodiments of the present invention. As shown in FIG22 , some embodiments of the present invention provide a pile body 10 configured to support a cleaning device, such as a floor scrubber, and dry the cleaning components of the cleaning device. The cleaning device, for example, is a floor scrubber, and the cleaning components, for example, are the cleaning roller brushes of the floor scrubber. After completing the cleaning operation, the floor scrubber can be returned to the pile body 10 for support, and various operations can be performed on the pile body, such as charging, self-cleaning, and drying cycles. As shown in Figure 22, the pile body 10 includes a shell 12, and the shell 12 has an accommodating space 13. For example, the shell 12 includes a bottom plate 11 and an upper shell buckled on the bottom plate 11, and the bottom plate 11 and the upper shell enclose the accommodating space 13. The bottom plate 11 and the upper shell can be detachable assembly parts or can be formed integrally. The pile body 10 also includes a pile body fan 14, which is arranged in the accommodating space 13 and is configured to form dry gas in the accommodating space 13. A pile body air outlet 123 is provided on the shell 12, which is configured to dock with the cleaning equipment, such as the bottom air outlet of the equipment body 22 of a floor scrubber. The equipment air duct of the cleaning equipment is used to allow sewage to flow into the sewage tank and transmit moist air during the cleaning operation. When the cleaning equipment is returned to the pile body, the pile body air outlet can be connected to the cleaning equipment air outlet of the equipment air duct of the cleaning equipment. Under the action of the pile body fan inside the pile body, dry air enters the cleaning equipment from the cleaning equipment air outlet, along the equipment air duct of the cleaning equipment to the cleaning roller brush of the cleaning equipment, thereby drying the cleaning roller brush of the cleaning equipment. At the same time, because the equipment air duct passes through the sewage tank of the cleaning equipment, the dry air can flow through the sewage tank of the cleaning equipment, drying the inner wall of the sewage tank, thereby preventing the sewage tank and the equipment air duct from being damp for a long time and breeding dirt. Some embodiments of the present invention provide a cleaning device, comprising: A cleaning seat configured to move on the surface to be cleaned; The device body extends longitudinally along the first direction and is pivotally connected to the cleaning seat, comprising: A sewage tank is detachably mounted on one side of the device body; a power source mounted on the other side of the device body, wherein a direction from one side of the device body to the other side is substantially perpendicular to the first direction; a first air duct connecting the sewage tank and the air inlet of the power source; a second air duct connecting the air outlet of the power source and the air outlet of the cleaning device; In response to the activation of the power source, the working airflow sequentially flows through the cleaning seat, the sewage tank, the first air duct, the power source, the second air duct and the air outlet of the cleaning device and is discharged. In an optional embodiment, the air inlet of the power source is located above the air outlet of the power source. In an optional embodiment, the sewage tank includes: The sewage tank body comprises: a sewage pipe extending along the bottom surface of the sewage tank body toward the sewage tank body opening; a cover bracket, detachably connected to the sewage tank body and extending along the first direction; The cleaning device is configured such that the working airflow enters the sewage tank through the sewage pipe, then passes through the cover bracket and enters the first air duct through the top of the sewage tank. In an optional embodiment, the cover bracket includes: The first support frame extends along the longitudinal direction of the sewage tank body, wherein the first support frame is provided with a filter window, and the cleaning device is configured so that the working airflow enters the sewage tank body, passes through the filter window, and then enters the first air duct through the top of the sewage tank. In an optional embodiment, the cover bracket further includes: The filter assembly is arranged at the end of the cover bracket adjacent to the opening of the sewage tank body and is configured to allow the working air flow to enter the first air duct through the sewage pipe, the filter window and the filter element. In an optional embodiment, the second air duct is arranged between the power source and the sewage tank. In an optional embodiment, the second air duct extends along the first direction of the device body to the vicinity of the cleaning seat, and then bends in the opposite direction to communicate with the air outlet of the cleaning device. In an optional embodiment, the cover bracket further includes: The filter net bag extends roughly along the direction in which the first supporting frame extends. In an optional embodiment, the air outlet of the cleaning device is a plurality of through holes. Some embodiments of the present invention provide a cleaning device, comprising: The device housing comprises: The cleaning seat is configured to move on the surface to be cleaned. An equipment body extending longitudinally along a first direction and pivotally connected to the cleaning seat; an equipment air duct configured to form a flow path for a working air flow; The equipment air duct is formed by at least a sewage suction port, a sewage tank and a power source. When the power source is started, the working airflow flows through the sewage suction port, the sewage tank and the power source in sequence. The parts of the equipment air duct before and after the air outlet of the sewage tank are respectively a front air duct and a rear air duct, and the overall flow directions of the working airflow in the front air duct and the rear air duct are opposite. In an optional embodiment, the rear air duct includes: a first air duct connecting the air outlet of the sewage tank and the air inlet of the power source; a second air duct connecting the air outlet of the power source and the air outlet of the cleaning device; In response to the power source being turned on, the working airflow flows generally from top to bottom through the first air duct, the power source, and the second air duct. In an optional embodiment, the front air duct includes: a sewage pipe extending longitudinally along a first direction; In response to the activation of the power source, the working airflow flows generally from bottom to top along the sewage pipe. In an optional embodiment, the front air duct further includes: The filter window, the working airflow flows roughly from bottom to top along the sewage pipe, the filter window and the air outlet of the sewage tank. In an optional embodiment, the front air duct further includes: The filter element is arranged at the air outlet of the sewage tank, and the working airflow flows roughly from bottom to top along the sewage pipe, the filter window and the filter element. In an optional embodiment, the working airflow flows in the second air duct approximately in a top-down direction. An embodiment of the present invention further provides a cleaning device, comprising: A cleaning seat, which is configured to move on the surface to be cleaned and includes a sewage suction port; The device body extends longitudinally along the first direction and is pivotally connected to the cleaning seat, comprising: a power source configured to generate a moving working airflow when activated; a wastewater tank configured to receive wastewater recovered from the cleaned surface; The moving path of the working airflow passes through the sewage suction port, the sewage tank and the power source in sequence, and the working airflow contains the sewage, which is collected and contained in the sewage tank; The power source includes an air inlet and an air outlet. The working airflow enters the power source from the air inlet. The air inlet extends in a first direction toward a direction away from the cleaning seat. In an optional embodiment, the device body further includes: a first air duct, connecting the sewage tank and the air inlet of the power source; a second air duct connecting the air outlet of the power source and the air outlet of the cleaning device; In response to the activation of the power source, the working airflow sequentially flows through the cleaning seat, the sewage tank, the first air duct, the power source and the second air duct, and is discharged from the air outlet of the cleaning device. In an optional embodiment, the sewage tank includes: The sewage tank body comprises: a sewage pipe extending along the bottom surface of the sewage tank body toward the sewage tank body opening; a cover bracket, detachably connected to the sewage tank; The working air flows into the sewage tank through the sewage pipe, then passes through the cover bracket and enters the first air duct through the air outlet of the sewage tank. In an optional embodiment, the cover bracket includes: The first support frame extends along the longitudinal direction of the sewage tank body, wherein the first support frame is provided with a filter window. After the working airflow enters the sewage tank body, it passes through the filter window and then enters the first air duct through the air outlet of the sewage tank. In an optional embodiment, the cover bracket further includes: The filter assembly is arranged at the end of the cover bracket adjacent to the opening of the sewage tank body and is configured to allow the working air flow to enter the first air duct through the sewage pipe, the filter window and the filter element. In an optional embodiment, the second air duct is formed by the space between components in the cleaning device. Some embodiments of the present invention provide a cleaning system, comprising: piles; and As in any one of the above embodiments of the cleaning device, the pile is configured to support the cleaning device. Some embodiments of the present invention provide a cleaning device, comprising: The device body extends longitudinally along a first direction and includes: The clean water tank accommodating portion is configured to accommodate the clean water tank, comprising: a first chassis configured to carry the clean water tank, wherein the first chassis comprises at least one first liquid leakage port; The sewage tank accommodating portion is configured to accommodate the sewage tank, comprising: The side wall of the sewage tank accommodating portion extends along the first direction; The first liquid leakage port is in fluid communication with the side wall of the sewage tank accommodating portion, and is configured to drain the liquid in the first bottom tray through the first liquid leakage port and the side wall of the sewage tank accommodating portion. In an optional embodiment, a liquid guide groove is provided on the side wall of the sewage tank accommodating portion, and the first liquid leakage port and the liquid guide groove are fluidically connected and configured to drain the liquid in the first chassis through the first liquid leakage port and the liquid guide groove. In an optional embodiment, the device body further includes: The water receiving structure connects the first bottom plate and the side wall of the sewage tank accommodating portion and is configured to allow liquid in the first bottom plate to flow out through the first liquid leakage port, the water receiving structure and the side wall of the sewage tank accommodating portion. In an optional embodiment, the water receiving structure includes: Water receiving structure body; The water receiving troughs are provided on both sides of the water receiving structure body and are configured so that the liquid in the first bottom plate flows into the water receiving troughs through the first liquid leakage port. In an optional embodiment, the water receiving tank includes: The water receiving trough hole is communicated with the side wall of the sewage tank accommodating portion and is configured so that the liquid flowing into the water receiving trough flows out through the water receiving trough hole. In an optional embodiment, the water receiving tank further includes: The water receiving trough hole is arranged on the inclined bottom surface, and is configured so that the liquid flowing into the water receiving trough flows out through the inclined bottom surface and the water receiving trough hole. In an optional embodiment, the sewage tank accommodating portion includes: The second bottom plate is connected to the side wall of the sewage tank accommodating portion and is configured to support the sewage tank, wherein the second bottom plate includes at least one second liquid leakage port. In an optional embodiment, the device body further includes: a sewage suction channel, passing through the second chassis and communicating with the sewage tank, and configured to allow the sucked sewage to enter the sewage tank through the sewage suction channel; The guide channel is connected to the second liquid leakage port and the sewage suction channel, and is configured to allow the liquid flowing in from the second liquid leakage port to flow into the sewage suction channel through the guide channel. In an optional embodiment, the clean water tank accommodating portion includes: The handle disassembly structure is arranged on the side wall of the clean water tank accommodating portion and is configured to release the cleaning equipment handle after being pressed. In an optional embodiment, the handle disassembly structure includes: A pressing portion is arranged to fit the side wall of the clean water tank accommodating portion; The abutting top portion is connected to the pressing portion and is configured to release the cleaning device handle from the device body after abutting against the locking protrusion of the cleaning device handle under the pressure of the pressing portion. Some embodiments of the present invention provide a cleaning device, comprising: The device body extends longitudinally along a first direction and includes: The clean water tank accommodating portion is configured to accommodate the clean water tank, a sewage tank accommodating portion configured to accommodate a sewage tank; a sewage suction port, configured to allow sewage from the cleaned surface to be sucked into the inlet of the cleaning device; a sewage suction channel configured to be in fluid communication with the sewage suction port and the sewage tank; The clean water tank accommodating part and the sewage tank accommodating part are both in fluid communication with the sewage suction channel, so that the liquids accumulated in the clean water tank accommodating part and the sewage tank accommodating part are both diverted to the sewage suction channel to be recovered into the sewage tank. In an optional embodiment, the clean water tank accommodating portion includes: a first chassis configured to carry a clean water tank, wherein the first chassis includes at least one first liquid leakage port; The sewage tank accommodating portion includes: The side wall of the sewage tank accommodating portion extends along the first direction; The first liquid leakage port is connected to the side wall of the sewage tank accommodating portion and is configured to discharge the liquid to the sewage suction channel through the first liquid leakage port and the side wall of the sewage tank accommodating portion. In an optional embodiment, a liquid guide groove is provided on the edge of the side wall of the sewage tank accommodating portion, and the first liquid leakage port is connected to the liquid guide groove and is configured to drain the liquid through the first liquid leakage port and the liquid guide groove. In an optional embodiment, the device body further includes: The water receiving structure connects the first bottom plate and the side wall of the sewage tank accommodating portion and is configured so that the liquid flows out through the first liquid leakage port, the water receiving structure and the side wall of the sewage tank accommodating portion in sequence. In an optional embodiment, the sewage tank accommodating portion includes: The second bottom plate is connected to the side wall of the sewage tank accommodating portion and is configured to support the sewage tank, wherein the second bottom plate includes at least one second liquid leakage port. In an optional embodiment, the device body further includes: The guide channel is configured to connect the second liquid leakage port, the side wall of the sewage tank accommodating portion and the sewage suction channel, so that the liquid flows into the sewage suction channel through the guide channel. In an optional embodiment, the diversion channel includes a liquid collecting device. In an optional embodiment, the device body further includes: The diversion channel is a pipeline structure connecting the second liquid leakage port and the sewage suction channel. Some embodiments of the present invention provide a cleaning system comprising: piles; and As in any one of the above embodiments of the cleaning device, the pile is configured to support the cleaning device. Some embodiments of the present invention provide a cleaning device, comprising: Equipment housing, including: a device body extending longitudinally along a first direction; A cleaning seat, pivotally connected to the device body; A liquid supply system configured to supply cleaning liquid to the cleaning roller brush and / or the cleaned surface, comprising: a liquid storage device configured to store a cleaning liquid; Liquid supply line, including: A dispensing connector configured to dispense the cleaning fluid, comprising: a liquid inlet, configured as an inlet for the cleaning liquid; There are at least two liquid outlets, and the one closer to the liquid inlet among the at least two liquid outlets has a larger diameter. In an optional embodiment, the liquid separation joint includes: A main liquid pipe, having an open liquid inlet at a first end and a closed structure at a second end; At least two liquid distribution pipes are connected to the main liquid pipe approximately vertically, and each of the liquid distribution pipes includes a liquid outlet. In an optional embodiment, the at least two liquid dispensing tubes have substantially the same outer diameter and different inner diameters. In an optional embodiment, the at least two liquid dispensing tubes include: A first liquid distributing tube, a second liquid distributing tube, a third liquid distributing tube and a fourth liquid distributing tube are sequentially arranged along the direction from the first end to the second end of the main liquid tube. In an optional embodiment, the inner diameter of the first dispensing tube is 1.35-1.45 mm; the inner diameter of the second dispensing tube is 1.25-1.35 mm; the inner diameter of the third dispensing tube is 1.15-1.25 mm; and the inner diameter of the fourth dispensing tube is 1.05-1.15 mm. In an optional embodiment, the cleaning seat includes: a first roller brush accommodating portion configured to accommodate a first roller brush; a second roller brush accommodating portion configured to accommodate a second roller brush; a third roller brush accommodating portion configured to accommodate a third roller brush; Wherein, the liquid outlet of the liquid dispensing joint distributes the cleaning liquid to the first roller brush, the second roller brush and the third roller brush through a liquid pipe. In an optional embodiment, the first roller brush accommodating portion includes: a first scraper extending along the length direction of the first roller brush and roughly matching the length of the first roller brush; The second scraper extends along the length direction of the first roller brush and matches a part of the first roller brush. In an optional embodiment, the second roller brush accommodating portion includes: a third scraper extending along the length direction of the second roller brush and matching a portion of the second roller brush; and / or The third roller brush accommodating portion includes: The fourth scraper extends along the length direction of the third roller brush and matches a part of the third roller brush. In an optional embodiment, the cleaning seat further includes: The sewage suction channel is configured to transport sewage extracted from between the first roller brush, the second roller brush and the third roller brush. In an optional embodiment, the cleaning seat includes: The front impact rollers are arranged on both sides of the cleaning seat. Some embodiments of the present invention provide a cleaning system comprising: piles; and A cleaning device as described in any one of the above items, wherein the pile is configured to support the cleaning device. Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. References to the common and similar parts between the various embodiments will be sufficient. For the systems or devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, their descriptions are relatively simple; for relevant details, refer to the descriptions of the methods. The above is merely an exemplary embodiment of the present invention and is not intended to limit the scope of the present invention. That is, any equivalent changes and modifications made according to the teachings of the present invention are still within the scope of the present invention. Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the disclosure herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not described in the present invention. The description and examples are to be regarded as exemplary only, and the scope and spirit of the present invention are defined by the scope of the claims. The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention. 10: Pile body 11: Bottom plate 12: Shell 13: Accommodation space 14: Pile body fan 20: Cleaning equipment 21: Cleaning seat 22: Equipment body 23: Handle element / handle assembly / Cleaning equipment handle 25: Sewage tank 26: Clean water tank 100: Cleaning system / Cleaning system 123: Pile body air outlet 211: Cleaning roller brush 212: Front impact roller 214: Detergent box 215: Liquid separation joint 216: First roller brush accommodating portion 217: Second roller brush accommodating portion 218: Third roller brush accommodating portion 221: Cleaning equipment air outlet / Clean water tank accommodating portion 222: Outlet 223: Water receiving structure 224: Clean water tank accommodating portion Part 225: Sewage tank accommodating portion 241: First air duct 242: Second air duct 251: Sewage tank body 252: Cover bracket 255: Second end 273: Power source (fan) / fan 2142: Second liquid pipe 2143: Third liquid pipe 2144: Fourth liquid pipe 2145: Fifth liquid pipe 2151: Main liquid pipe 2152: Liquid distribution pipe 2161: First scraper 2162: Second scraper 2171: Third scraper 2181: Fourth scraper 2211: First chassis 2212: Pressing portion 2213: Pressing chamber 2214: The abutting top 2215: Locking protrusion 2216: Return spring 2221: Accommodation sidewall 2222: Second chassis 2223: Sewage suction channel 2224: Diversion channel 2225: Second protrusion 2231: Water receiving structure body 2232: Water receiving trough 2233: Inclined bottom surface 2234: Air duct opening 2511: Sewage pipe 2512: Handle 2513: Sewage tank opening 2514: Sewage tank bottom 2521: First support frame 2522: Second support frame 2523: Third support frame 2524: Locking member 2525: Filter net bag 2526: Recess 2527: Second through hole 2528: Filter window / filter window 2533: First float cover 2534: Locking Component 2541: Second Float 2542: Second Rotating Shaft 2543: Second Float Cover 2544: First Through Hole 2551: Filter Assembly / Filter Element 2552: Sewage Tank Assembly 2731: Power Source Air Inlet 2732: Power Source Air Outlet 21511: Liquid Inlet 21512: Enclosed Structure 21521: First Liquid Dispensing Pipe 21522: Second Liquid Dispensing Pipe 21523: Third Liquid Dispensing Pipe 21524: Fourth Liquid Dispensing Pipe 22111: First Liquid Leakage Port 22112: First Protruding Edge 22211: Liquid Guide Trough 22212: Folded Edge 22221: Second Liquid Leakage Port 22321: Water Receiving Sink Hole In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work. FIG1 is a schematic structural diagram of a cleaning device provided by some embodiments of the present invention. FIG2 is a partial cross-sectional view of a cleaning device provided by some embodiments of the present invention. FIG3 is a schematic diagram of the structure of a sewage tank provided by some embodiments of the present invention. FIG4 is a schematic diagram of the sewage tank structure provided by some embodiments of the present invention. FIG5 is a schematic diagram of the cover support structure provided by some embodiments of the present invention. FIG6 is a schematic diagram of a partial structure of a cover bracket provided by some embodiments of the present invention. FIG7 is a schematic diagram of the air duct and the direction of the working airflow when the fan of the cleaning equipment provided by some embodiments of the present invention is in operation. FIG8 is a schematic diagram of the structure of the cleaning device body provided by some embodiments of the present invention. FIG9 is a schematic diagram of a clean water tank housing chassis structure provided by some embodiments of the present invention. FIG10 is a top view of a water receiving structure provided by some embodiments of the present invention. FIG. 11 is a side view of a water receiving structure provided in some embodiments of the present invention. FIG12 is a schematic diagram from a top view of a sewage tank housing chassis structure provided by some embodiments of the present invention. FIG13 is a bottom view schematic diagram of a sewage tank accommodating chassis structure provided by some embodiments of the present invention. FIG14 is a cross-sectional view of a disassembled structure of a handle element provided in some embodiments of the present invention. FIG. 15 is a schematic diagram of the cleaning seat structure provided by some embodiments of the present invention. FIG. 16 is a schematic diagram of the internal structure of a cleaning seat provided in some embodiments of the present invention. FIG17 is a schematic diagram of the structure of a water diversion joint provided in some embodiments of the present invention. FIG18 is a schematic diagram of the roller brush accommodating chamber structure provided in some embodiments of the present invention. FIG19 is a schematic diagram of the roller brush accommodating chamber provided in some embodiments of the present invention from another angle. FIG20 is a schematic diagram of the direction of the sewage suction channel provided in some embodiments of the present invention. FIG21 is a schematic diagram of the cleaning system structure provided by some embodiments of the present invention. FIG22 is a schematic diagram of the explosion structure of a pile provided by some embodiments of the present invention. 224: Clean water tank accommodating part 225: Sewage tank storage part

Claims

1. A cleaning device, comprising: The equipment body extends longitudinally along a first direction and includes: a clean water tank receiving section configured to receive a clean water tank; a wastewater tank receiving section configured to receive a wastewater tank; a suction port configured to allow wastewater from the surface being cleaned to be sucked into the inlet of the cleaning equipment; and a suction channel configured to be in fluid communication with the suction port and the wastewater tank, wherein the clean water tank receiving section and the wastewater tank receiving section are both in fluid communication with the suction channel, so that the liquid accumulated in the clean water tank receiving section and the wastewater tank receiving section is guided to the suction channel for recycling into the wastewater tank.

2. The cleaning equipment as requested in item 1, wherein, The clean water tank includes a first chassis configured to support the clean water tank, wherein the first chassis includes at least one first drain outlet. The wastewater tank includes a wastewater tank sidewall extending along the first direction, wherein the first drain outlet and the wastewater tank sidewall are connected and configured to allow the liquid to flow through the first drain outlet and the wastewater tank sidewall to the suction channel.

3. The cleaning equipment as requested in item 2, wherein, The sewage tank has a liquid guide channel on the edge of the side wall of the receiving part. The first leakage port is connected to the liquid guide channel and is configured to allow the liquid to flow out through the first leakage port and the liquid guide channel.

4. The cleaning equipment as requested in item 2, wherein, The device body also includes: a water receiving structure connecting the first chassis and the side wall of the sewage tank receiving part, configured such that the liquid flows out sequentially through the first leak, the water receiving structure and the side wall of the sewage tank receiving part.

5. The cleaning equipment as requested in item 2, wherein, The wastewater tank accommodating part includes: a second chassis connected to the side wall of the wastewater tank accommodating part and configured to support the wastewater tank, wherein the second chassis includes at least one second leakage port.

6. The cleaning equipment as requested in item 5, wherein, The device body also includes a flow channel, configured to connect the second leakage port, the side wall of the sewage tank accommodating part and the suction channel, so that the liquid flows into the suction channel through the flow channel.

7. The cleaning equipment as requested in item 6, wherein, The flow channel includes a liquid collection device.

8. The cleaning equipment as requested in item 5, wherein, The device body also includes: a flow channel, a piping structure configured to connect the second leakage port to the suction channel.

9. A cleaning system, comprising: pile body; And the cleaning equipment as claimed in any of claims 1 to 8, wherein the pile is configured to support the cleaning equipment.

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