Cleaning equipment and sewage tank

Abstract

The utility model provides cleaning equipment and a sewage tank. A shell of the sewage tank can comprise a separation bin and a water storage bin. Under the action of the separation bin, solid-liquid separation of dirt is achieved, and liquid garbage in the dirt flows into the water storage bin through the water passing hole and the backflow prevention assembly. The backflow prevention assembly can prevent liquid in the water storage bin from flowing back into the separation bin, and the backflow prevention assembly can be suitable for the cleaning equipment to be in a normal working state and a lying state. The sewage tank with the separation bin and the water storage bin is applied to the cleaning equipment, and when the cleaning equipment lies, the separation bin and the water storage bin are arranged, so that solid-liquid separation and water-vapor separation of dirt are realized, the production cost is reduced, and the space utilization rate of the shell is improved. According to the utility model, liquid can be prevented from entering the suction motor in a lying state.

Description

Technical Field

[0001] The utility model relates to cleaning equipment, in particular to cleaning equipment and a sewage tank. Background Art

[0002] Existing sewage tanks of cleaning equipment cannot be used flat, or most of them are complicated in structure or use active separation motors with high cost. When the existing sewage tanks of cleaning equipment that can be used flat are used flat, the distance between the dirty liquid surface and the motor becomes shorter, so that the motor can easily suck the liquid into the motor, causing damage to the suction motor. Therefore, there is room for improvement. Utility Model Content

[0003] The utility model provides a cleaning device and a sewage tank, so as to solve the technical problem that the sewage tank of the existing cleaning device which can be used flatly is easy to cause sewage to enter the HEPA and the suction motor when lying flat.

[0004] The utility model provides a cleaning device, comprising a body, wherein a sewage tank and a suction motor connected to the sewage tank are arranged in the body, and the sewage tank comprises:

[0005] The housing comprises a separation chamber and a water storage chamber, a water hole is provided between the separation chamber and the water storage chamber, the separation chamber is configured to separate the dirt sucked into the sewage tank by the suction motor into solid and liquid, and an end of the water hole facing the water storage chamber is connected to an anti-backflow component;

[0006] A sewage inlet pipe is arranged in the shell, and an outlet of the sewage inlet pipe is arranged in the separation chamber;

[0007] When dirt enters the separation bin, liquid in the dirt is introduced into the water storage bin through the water hole, and the backflow prevention component is used to prevent the liquid in the water storage bin from flowing back into the separation bin.

[0008] The above scheme divides the shell into two compartments, so that when the above equipment is in use, the sewage in the separation compartment can enter the water storage compartment. However, the suction of the suction motor can easily cause the liquid in the water storage compartment to flow back into the separation compartment. For this reason, the present application provides an anti-backflow component in the water storage compartment to prevent the liquid in the water storage compartment from flowing back.

[0009] In other words, the anti-backflow component combined with the separation design of the separation bin and the water storage bin can effectively prevent liquid from mixing into the airflow and entering the suction motor when the cleaning device is in use.

[0010] In one embodiment of the utility model, the backflow prevention assembly includes a backflow prevention pipe, which is connected to the water hole, and the liquid in the separation bin is introduced into the water storage bin through the water hole and the backflow prevention pipe.

[0011] By setting up the anti-reflux pipe, the flow distance of liquid reflux is increased, which means that the difficulty of reflux is increased. In actual use, the amount of liquid reflux can be effectively reduced, which means that the amount of liquid in the separation chamber close to the suction motor is effectively prevented.

[0012] In one embodiment of the utility model, when the cleaning device is in a lying state, the outlet of the anti-backflow pipe faces the top of the water storage tank, and the water hole is located at the bottom of the shell. The lying state means that the body is laid flat and the angle between it and the surface to be cleaned is in the range of 0° to 30°.

[0013] The outlet position of the anti-backflow pipe is set towards the top of the water storage tank in the lying state, which further increases the difficulty of liquid reflux. Imagine that in the lying state, the liquid needs to flow back to the separation tank through the above-mentioned anti-backflow pipe, and the reflux can only be achieved when the overall amount of liquid exceeds the height of the anti-backflow pipe. Accordingly, the difficulty of reflux can be controlled accordingly as long as the height of the anti-backflow pipe is controlled.

[0014] In one embodiment of the utility model, the central axis of the water hole is parallel to the central axis of the sewage inlet pipe, the backflow prevention pipe is configured as a circular tube, and the angle between the central axis of the backflow prevention pipe and the central axis of the water hole is 90° to 135°.

[0015] When the anti-backflow pipe is set as a circular pipe, the angle between its axes can be controlled to further improve the anti-backflow effect. Specifically, when it is set at an acute angle, the inclined surface of the anti-backflow pipe will extend toward the water hole. When the liquid shakes, the liquid will flow into the water hole along the inclined surface, resulting in a poor waterproof effect.

[0016] When it is set at a right angle, the vertical distance between the upper surface of the liquid and the opening of the anti-reflux pipe can be the highest. That is to say, when the liquid shakes, it needs to cross the highest distance to enter the water hole. The above setting can make reflux more difficult and effectively prevent liquid reflux.

[0017] When using an inclination angle between 90° and 135°, refer to Fig.18 The inclined surface of the inlet is facing away from the water hole, so the inclined outer wall can suppress the shaking liquid surface. When the inclination angle is larger, such as 145°, the distance between the inlet and the liquid surface becomes too small, so the water-proof effect is reduced.

[0018] To this end, a setting of 90° to 135° can be adopted to optimize the water ingress prevention effect. In other words, the above-mentioned features can also prevent surges to a certain extent. It should be understood that when the liquid surface surges in the lying state, the inertia of the movement will cause the liquid to be sucked into the motor along with the airflow. In addition to solving the problem of anti-backflow, the above-mentioned features can also interrupt the surge of the liquid surface, further preventing the risk of it following the airflow into the motor.

[0019] In one embodiment of the utility model, a partition plate is provided to divide the shell into the separation bin and the water storage bin, the anti-backflow pipe is configured as a non-circular tube structure and includes a side wall spaced apart from the partition plate, and the angle between the side wall and the central axis of the water hole is 90° to 135°.

[0020] In the above scheme, when the anti-backflow pipe is a non-circular pipe structure, the best anti-backflow effect can also be obtained by setting the angle between its side wall and the water hole. For the effect of the angle setting, see above.

[0021] In one embodiment of the utility model, a suction duct is provided in the shell, one end of the suction duct is connected to the water storage tank, and the other end is connected to the suction motor, so that when the suction motor is working, the gas in the water storage tank flows toward the suction motor through the suction duct.

[0022] The suction motor is connected to the water storage tank, so that negative pressure is formed in the water storage tank, which can cooperate with the anti-backflow component to further achieve an anti-backflow effect.

[0023] In one embodiment of the utility model, a partition plate is provided, which divides the shell into the separation bin and the water storage bin, and the partition plate is located on one side of the water storage bin and is provided with a suction port, which is connected to the suction air duct.

[0024] The water storage bin can be placed in a negative pressure state by separating the water storage bin with a partition plate and cooperating with a suction duct and a suction port. The suction port is opened on the partition plate to connect the suction duct with the water storage bin without adding any other structure.

[0025] In one embodiment of the utility model, a middle cavity is opened in the partition plate, one side of the middle cavity is configured as the suction port, and the other side is connected to the suction duct, and when the cleaning device is in a lying state, the suction port is configured to be located above the suction duct, and the lying state means that the body of the cleaning device is flat and the angle between it and the surface to be cleaned is in the range of 0° to 30°.

[0026] Also, in order to prevent water vapor from entering the suction duct and affecting the suction motor, an intermediate cavity is also provided in the partition plate. The use of the intermediate cavity can play a transitional role, which can extend the flow distance of water vapor and thus prevent the difficulty of water vapor entering the suction motor.

[0027] In one embodiment of the utility model, the projection of the suction port on the partition surface is staggered with the projection of the connection position between the suction duct and the intermediate cavity on the projection surface, and the partition surface is configured as the plane where the partition plate is located.

[0028] By staggering the connection positions between the suction port, the suction air duct and the middle cavity, the water vapor flow distance can be further extended, and the ability to prevent water vapor from entering is correspondingly stronger.

[0029] In one embodiment of the utility model, a labyrinth structure is provided outside the port of the suction port facing the water storage bin, and the labyrinth structure blocks the water vapor in the water storage bin from entering the suction air duct.

[0030] The design of the maze structure can block the gas to a certain extent before it enters the suction duct, thereby better preventing water vapor from entering the suction duct.

[0031] In one embodiment of the utility model, the maze structure includes a first channel and a second channel, the inlet of the first channel is connected to the water storage tank, the first channel is connected to the second channel and the flow direction of the internal gas is opposite, and the outlet of the second channel is connected to the suction port.

[0032] The above describes one implementation of the maze structure, which controls the direction of airflow through a staggered design of multiple channels, and also extends the airflow distance.

[0033] In one embodiment of the utility model, the maze structure includes a first connecting plate, a second connecting plate and a third connecting plate, the third connecting plate is arranged between the first connecting plate and the second connecting plate to form the first channel and the second channel, and the side of the third connecting plate away from the first connecting plate is connected to the shell next to the suction port.

[0034] The above is an implementation of one of the first channel and the second channel. The above channel is formed by connecting and separating multiple blocks, so as to control the direction of airflow.

[0035] In one embodiment of the present invention, the first connecting plate and the second connecting plate are connected to the partition plate, and a gap exists between a side of the third connecting plate close to the first connecting plate and the partition plate.

[0036] In an embodiment of the present invention, the water through hole is opened on the partition plate.

[0037] The above describes the way of opening the water holes. The way of opening the water holes on the partition plate can directly connect the two bins through the partition plate, and the structure is relatively more compact.

[0038] In one embodiment of the utility model, a solid-liquid separator is provided in the separation bin, and a plurality of separation holes are provided on the solid-liquid separator for performing solid-liquid separation on dirt flowing through the separation bin.

[0039] The solid-liquid separator can ensure that only solids exist in the separation bin, while liquids can enter the water storage bin through the water hole. After use, users only need to pour out the solids on the solid-liquid separator without having to separate them themselves, which provides a better user experience.

[0040] In one embodiment of the utility model, it comprises a cover body, and the cover body can be buckled on the opening of the sewage tank. One end of the solid-liquid separator is connected to the cover body, and the other end is connected to the partition plate.

[0041] The above describes the connection method of the solid-liquid separator, which is connected to the cover body, so that the extraction method thereof is more direct, and the solid-liquid separator can be taken out with it by only pulling out the cover body.

[0042] In one embodiment of the utility model, the solid-liquid separator is configured as a filter plate, a plurality of filter holes are provided on the filter plate, at least one side of a portion of the filter plate is recessed to form a filter cavity, and when the cleaning device is in a lying state, the opening of the filter cavity is arranged upward, and the lying state means that the body of the cleaning device is laid flat and the angle between it and the surface to be cleaned is in the range of 0° to 30°.

[0043] The use of the filter cavity can prevent the separated solid waste from having nowhere to be placed, and the filter cavity can prevent the solid waste from falling out of the solid-liquid separator when being pulled out.

[0044] In one embodiment of the present invention, the water passage hole is formed separately on the partition plate, and the water passage hole is arranged at the bottom of the filter plate, so that dirt passes through the filter plate first and then passes through the water passage hole.

[0045] In one embodiment of the utility model, the water hole is formed between the partition plate and the inner wall of the shell. When the cleaning device is in a lying state, the water hole is located at the bottom of the shell. The lying state means that the body is laid flat and the angle between it and the surface to be cleaned is in the range of 0° to 30°.

[0046] The above describes two ways of opening water holes. The first is to open them directly on the partition plate. The above method is simple, but the position determination is relatively complicated, and the opening position needs to be determined. The second method is simple to find the opening position. It only needs to be opened on the edge of the partition, and it can be formed by cooperating with the inner wall of the shell. However, the size planning is difficult to determine when opening the above scheme. The above schemes all have their own corresponding better effects.

[0047] In one embodiment of the present invention, the suction air duct is arranged on one side of the filter plate, and the suction air duct is isolated from the separation bin.

[0048] The opening of the above-mentioned suction air duct ensures that the suction air duct will not be affected by the suction of the separation chamber. After the two are isolated, the negative pressure of the water storage tank is directly controlled by the suction motor, while preventing the liquid in the water storage tank from entering the separation chamber.

[0049] The utility model also provides a sewage tank, which is used to communicate with an externally connected suction motor to achieve dirty suction, and includes:

[0050] The housing comprises a separation chamber and a water storage chamber, a water hole is provided between the separation chamber and the water storage chamber, the separation chamber is configured to separate dirt into solid and liquid, and an anti-backflow component is connected to one end of the water hole facing the water storage chamber;

[0051] A sewage inlet pipe is arranged in the shell, and an outlet of the sewage inlet pipe is arranged in the separation chamber;

[0052] When dirt enters the separation bin, liquid in the dirt is introduced into the water storage bin through the water hole, and the backflow prevention component is used to prevent the liquid in the water storage bin from flowing back into the separation bin.

[0053] The design of the above-mentioned sewage tank is similar to the effects introduced above. Please refer to the above description of the effects. Of course, it should be understood that the effects here are not only disclosed in the above content. The effects will be integrated into the following to further introduce this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0055] Figure 1 A schematic structural diagram of a cleaning device provided in one embodiment of the utility model.

[0056] Figure 2 A schematic cross-sectional view of a sewage tank provided in accordance with an embodiment of the utility model.

[0057] Figure 3 A schematic diagram of the position between the backflow prevention component and the separation chamber in a sewage tank provided in one embodiment of the utility model.

[0058] Figure 4 It is a schematic diagram of the position between the first baffle and the air inlet in a sewage tank provided by an embodiment of the utility model.

[0059] Figure 5 It is a schematic diagram of the position between the suction duct and the separation chamber in a sewage tank provided by an embodiment of the utility model.

[0060] Figure 6 It is a schematic diagram of the connection between the suction air duct and the middle cavity in a sewage tank provided by an embodiment of the utility model.

[0061] Figure 7 It is a schematic diagram of the position between the suction port and the maze structure in a sewage tank provided by an embodiment of the utility model.

[0062] Figure 8 It is a structural schematic diagram of a maze structure in a sewage tank provided by an embodiment of the utility model from one perspective.

[0063] Fig. 9 The utility model provides an embodiment of Figure 7 A magnified schematic diagram of the middle maze structure.

[0064] Fig.10 It is a structural schematic diagram of a maze structure in a sewage tank provided by an embodiment of the utility model from another perspective.

[0065] Fig.11 The utility model provides an embodiment of Fig. 9 A magnified schematic diagram of the middle maze structure.

[0066] Fig.12 It is a schematic diagram of the position of the front and rear sides of a sewage tank provided by an embodiment of the utility model.

[0067] Fig.13 It is a partial enlarged schematic diagram of a water hole in a sewage tank provided by an embodiment of the utility model.

[0068] Fig.14 It is a structural schematic diagram of a filter plate in a sewage tank provided by an embodiment of the utility model.

[0069] Fig.15 It is a schematic diagram of the flow direction of liquid garbage in the sewage tank provided by an embodiment of the utility model.

[0070] Fig.16 It is a schematic diagram of the flow of solid waste, liquid waste and gas in the sewage tank provided by one embodiment of the utility model under normal working conditions.

[0071] Fig.17 It is a schematic diagram of the flow direction of solid waste, liquid waste and gas in the sewage tank provided by one embodiment of the utility model when it is in a flat state.

[0072] Fig.18 It is a schematic diagram of a sewage tank provided by an embodiment of the utility model in a flat state, with the anti-backflow component's inclined wall pressing down on the water flow. DETAILED DESCRIPTION

[0073] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0074] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0075] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0076] See also Figures 1 to 18 Current cleaning equipment, such as a handheld floor scrubber, has a sewage tank 10 and a body 30. The sewage tank 10 is arranged on the body 30. A suction motor (not shown in the figure) is arranged above the sewage tank 10, and the dirt is cleaned by suction. In daily use, most floor scrubbers cannot clean environments such as under the bed that require lying flat for suction. This problem mainly arises because in the lying state, the sewage in the sewage tank is easy to flow into the suction motor, thereby causing damage to the equipment. Based on the above situation, the present application provides a solution to the above problem as follows.

[0077] Please refer to Figure 1 In the cleaning device, the lower end of the body 30 is usually connected to a floor brush assembly 20, and the target object, such as the floor, is cleaned by controlling the rotation of the floor brush assembly 20. A sewage tank 10 is provided with a sewage inlet pipe 150, which can be used to receive the dirt cleaned by the floor brush assembly 20. In daily cleaning work, the dirt inside the sewage inlet pipe 150 can be sucked into the sewage tank 10 by rotating the suction motor.

[0078] See also Figures 1 to 18 The flat state of the cleaning device refers to the setting of the fuselage 30 and the target ground at an angle within a certain range, and the above angle can be 0 degrees, that is, the fuselage is basically parallel to the target ground, or any angle within 0-30 degrees. That is, the flat state can be formed when the angle between the fuselage 30 and the target ground is within 0-30 degrees. The upright state described below is that the fuselage 30 is vertical relative to the ground, that is, between negative 60 degrees and positive 60 degrees with the target ground.

[0079] See also Figure 2 In one embodiment of the present invention, the sewage tank 10 may include a shell 110 , and the shell 110 may be provided with a separation chamber 120 , a water outlet chamber 130 and a sewage inlet pipe 150 .

[0080] Specifically, the outlet 151 of the sewage inlet pipe 150 faces the separation bin 120 to transport the dirt to the inside of the separation bin 120. The separation bin 120 performs solid-liquid separation on the dirt transported by the sewage inlet pipe 150, that is, the solid garbage is collected in the separation bin 120, and the liquid garbage can enter the water storage bin 130 after separation in the separation bin 120. When the body 30 is in a vertical state, the separation bin 120 is located on the top of the water storage bin 130. The separation bin 120 separates the dirt, stores the solid garbage in the separation bin 120, and stores the liquid garbage in the water storage bin 130, thereby improving the cleaning efficiency of the dirt.

[0081] Specifically, a water hole 141 is provided between the separation bin 120 and the water storage bin 130, and an anti-backflow component is connected to one end of the water hole 141 facing the water storage bin 130, and the outlet of the anti-backflow component can be arranged in the water storage bin 130. The liquid waste in the separation bin 120 flows into the water storage bin 130 through the water hole 141 and the anti-backflow component, and the anti-backflow component can prevent the liquid in the water storage bin 130 from flowing back into the separation bin 120. The benefit of the anti-backflow component preventing the liquid waste in the water storage bin 130 from flowing back into the separation bin 120 is that it can avoid excessive liquid waste in the separation bin 120, that is, it can ensure long-term and efficient solid-liquid separation work in the separation bin 120.

[0082] Specifically, for the gas inside the separation chamber 120 and the water storage chamber 130, the suction motor can provide negative pressure airflow to the separation chamber 120 and the water storage chamber 130, and the negative pressure airflow of the separation chamber 120 and the negative pressure airflow of the water storage chamber 130 converge at the suction motor to form a negative pressure state. Under the negative pressure state, the dirt transported by the sewage inlet pipe 150 can enter the separation chamber 120 for solid-liquid separation.

[0083] See also Figure 2 and Figure 3 In one embodiment of the utility model, the backflow prevention assembly may include a backflow prevention pipe 131. One end of the backflow prevention pipe 131 is connected to the water hole 141, and the other end of the backflow prevention pipe 131 is located in the water outlet bin 130. The liquid garbage separated in the separation bin 120 can flow into the water storage bin 130 through the water hole 141 and the backflow prevention pipe 131. When the body 30 is in a flat state, the outlet of the backflow prevention pipe 131 faces the top of the water storage bin 130, and the water hole 141 can be located at the bottom of the housing 110.

[0084] Specifically, after the dirt is separated and filtered by the separation bin 120, the liquid garbage flows into the water hole 141. When the body 30 is in a flat state, since the outlet height of the anti-backflow pipe 131 is higher than the height of the water hole 141, the liquid garbage at the water hole 141 cannot flow out of the anti-backflow pipe 131 to the water storage bin 130 in a short time. The liquid garbage at the water hole 141 reaches the outlet of the anti-backflow pipe 131 after a period of accumulation, and then the liquid garbage flows from the outlet of the anti-backflow pipe 131 to the water storage bin 130.

[0085] Specifically, when the body 30 is in a flat state, after the liquid garbage flows from the outlet of the anti-backflow pipe 131 to the water storage tank 130, only when the liquid garbage inside the water storage tank 130 reaches the outlet height of the anti-backflow pipe 131, it is possible to cause the liquid garbage inside the water storage tank 130 to flow back into the separation tank 120. Therefore, by connecting the anti-backflow pipe 131 to the side of the water hole 141 facing the water storage tank 130, during the normal use of the cleaning device, it is only necessary to ensure that the liquid inside the water storage tank 130 does not exceed the outlet height of the anti-backflow pipe 131 to ensure that the liquid in the water storage tank 130 cannot flow back into the separation tank 120.

[0086] Specifically, after the dirt is separated and filtered by the separation bin 120, the liquid garbage flows into the water hole 141. When the body 30 is in a vertical state, under the action of gravity, the liquid garbage at the water hole 141 flows into the water storage bin 130 through the anti-backflow pipe 131. Due to the influence of gravity, it is impossible for the liquid in the water storage bin 130 to flow back to the separation bin 120.

[0087] It can be seen that by connecting the anti-backflow pipe 131 on the side of the water hole 141 facing the water storage tank 130, the fuselage 30 can be used in a normal working state and a flat state, and it can ensure that the liquid in the water storage tank 130 will not flow back into the separation tank 120, thereby ensuring efficient solid-liquid separation in the separation tank 120.

[0088] See also Figure 2 and Figure 3 In one embodiment of the present invention, when the body 30 is in a flat state, the outlet of the anti-backflow pipe 131 faces the top of the water storage tank 130, and the water hole 141 can be located at the bottom of the housing 110. For example, when the body 30 is in a flat state, one end of the anti-backflow pipe 131 extends toward the top of the water storage tank 130.

[0089] Specifically, when the body 30 is in a lying state, the advantage of the water hole 141 being arranged at the bottom of the shell 110 is that, under the action of gravity, the liquid waste in the separation bin 120 is located at its bottom, so that the liquid waste in the separation bin 120 can quickly flow into the water hole 141, so as to realize the liquid waste flowing into the water storage bin 130 as soon as possible, thereby improving the solid-liquid separation work in the separation bin 120.

[0090] Specifically, when the body 30 is in a flat state, only when the liquid level of the water storage tank 130 exceeds the outlet height of the anti-backflow pipe 131, that is, the liquid in the water storage tank 130 is connected with the liquid in the anti-backflow pipe 131, can the liquid garbage in the water storage tank 130 flow back into the separation tank 120. Therefore, the advantage of directing the outlet of the anti-backflow pipe 131 toward the top of the water storage tank 130 is to prevent the liquid in the water storage tank 130 from being connected with the liquid in the anti-backflow pipe 131 in a short period of time. In other words, for a long period of time, the liquid in the anti-backflow pipe 131 can flow into the water storage tank 130, and since the liquid level of the water storage tank 130 does not reach the outlet height of the anti-backflow pipe 131, it is impossible for the liquid in the water storage tank 130 to flow into the anti-backflow pipe 131, thereby ensuring that the liquid in the water storage tank 130 will not flow back into the separation tank 120.

[0091] See also Figure 2 and Figure 3 In one embodiment of the utility model, the central axis of the water hole 141 is parallel to the central axis of the sewage inlet pipe 150, and the anti-backflow pipe 131 can be configured as a round pipe, and the angle between the central axis of the anti-backflow pipe 131 and the central axis of the water hole 141 is 90° to 135°. By setting the angle between the central axis of the anti-backflow pipe 131 and the central axis of the water hole 141 to be an obtuse angle, when the fuselage 30 is in a flat state or a vertical state, it can effectively prevent the liquid in the water storage tank 130 from flowing back into the separation tank 120.

[0092] See also Figure 2 and Figure 3 In one embodiment of the utility model, a partition plate 140 is provided in the shell 110, and the partition plate 140 can divide the shell 110 into a separation bin 120 and a water storage bin 130. The anti-backflow pipe 131 can be configured as a non-circular tube structure, and the anti-backflow pipe 131 includes a side wall spaced apart from the partition plate 140, and the angle between the side wall and the central axis of the water hole 141 is 90° to 135°. By setting the angle between the central axis of the anti-backflow pipe 131 and the central axis of the water hole 141 to be an obtuse angle, when the fuselage 30 is in a flat state or a vertical state, it is possible to effectively prevent the liquid in the water storage bin 130 from flowing back into the separation bin 120.

[0093] See also Figure 3 and Figure 4 In one embodiment of the utility model, a first baffle 111 is provided in the separation chamber 120. After passing through the first baffle 111, the gas in the separation chamber 120 converges to the suction motor. The first baffle 111 can prevent liquid from entering the suction motor.

[0094] Specifically, for the gas in the separation chamber 120, under the suction action of the suction motor, after the gas contacts the side wall of the first baffle 111, the first baffle 111 blocks the liquid, thereby preventing the liquid from entering the suction motor and causing damage to the suction motor. The housing 110 is provided with an air inlet 112. After the gas in the separation chamber 120 passes through the first baffle 111, it converges to the suction motor through the air inlet 112. The first baffle 111 is located between the air inlet 112 and the sewage inlet pipe 150, so that the first baffle 111 separates the air inlet 112 from the sewage inlet pipe 150.

[0095] See also Figure 3 and Figure 4 In one embodiment of the present invention, when the fuselage 30 is in a flat state, the top side wall of the first baffle 111 is located on one side of the air inlet 112, and the height of the top side wall of the first baffle 111 is higher than the height of the air inlet 112. The bottom side wall of the first baffle 111 is located at the bottom of the air inlet 112.

[0096] Specifically, the first baffle 111 includes a top side wall 1111 and a bottom side wall 1110, the top side wall 1111 is located on one side of the air inlet 112, and the height of the top side wall 1111 is higher than the height of the air inlet 112, and the bottom side wall 1110 is located at the bottom of the air inlet 112. Air inlets 112 may be provided on both sides of the sewage inlet pipe 150, one air inlet 112 corresponds to one first baffle 111, and the sewage inlet pipe 150 is located between the two first baffles 111. A filter screen 1120 may be provided at the air inlet 112 to effectively prevent solid waste from entering the HEPA 117.

[0097] See also Figure 3 In one embodiment of the present invention, a detection sheet 132 for detecting the liquid level may be provided in the water storage tank 130. The detection sheet 132 may be electrically connected to the detection conductive sheet 114 on the housing 110, and may be used to detect the liquid level in the water storage tank 130. For example, when the body 30 is in a flat state, the detection sheet 132 may be located at the top of the water storage tank 130 to detect whether the liquid level in the water storage tank 130 is full.

[0098] See also Figure 4 and Figure 5 In one embodiment of the utility model, a suction duct 113 is provided in the housing 110, one end of the suction duct 113 is connected to the water storage bin 130, and the other end of the suction duct 113 is connected to the suction motor. When the suction motor is working, the gas in the water storage bin 130 flows toward the suction motor through the suction duct 113. Under the suction action of the suction motor, the gas inside the separation bin 120 flows through the air inlet 112, and the gas inside the water storage bin 130 flows through the suction duct 113, so that during the operation of the cleaning device, the dirt in the sewage inlet pipe 150 is ensured to continuously enter the separation bin 120 for solid-liquid separation.

[0099] See also Figure 4 and Figure 5 In one embodiment of the utility model, a partition plate 140 is provided in the housing 110, and the partition plate 140 divides the housing 110 into a separation chamber 120 and a water storage chamber 130. The partition plate 140 is located on one side of the water storage chamber 130 and is provided with a suction port 133, and the suction port 133 is connected to the suction air duct 113. The partition plate 140 not only serves to separate the separation chamber 120 and the water storage chamber 130, but also serves to connect the gas in the water storage chamber 130 to the suction air duct 113 through the suction port 133, thereby reducing the production cost and saving the internal space of the housing 110.

[0100] See also Figure 6 In one embodiment of the utility model, a middle cavity 1131 is provided on the partition plate 140, one side of the middle cavity 1131 is configured as a suction port 133, and the other side of the middle cavity 1131 is connected to the suction duct 113. When the body 30 is in a flat state, the suction port 133 is configured to be located above the suction duct 113.

[0101] Specifically, the suction port 133 is connected to the suction air duct 113 through the middle cavity 1131, and the gas in the water storage tank 130 flows along the suction port 133, the middle cavity 1131, and the suction air duct 113 toward the suction motor, and the suction motor is used to provide negative pressure airflow to the water storage tank 130 to form a negative pressure state. A sealing ring 1130 may be provided in the suction air duct 113, and the sealing ring 1130 in the suction air duct 113 can prevent water vapor from entering the suction motor.

[0102] See also Figure 6 In one embodiment of the utility model, the plane where the partition plate 140 is located is defined as a partition plane, and the projection of the suction port 133 on the partition plane is staggered with the projection of the connecting position of the suction duct 113 and the intermediate cavity 1131 on the partition plane. The intermediate cavity 1131 plays a transitional role between the suction port 133 and the suction duct 113. The intermediate cavity 1131 can set the suction port 133 at a higher position, and set the connection between the suction duct 113 and the intermediate cavity 1131 at a lower position. The advantage of setting the intermediate cavity 1131 is that it is not necessary to set both the suction duct 113 and the suction port 133 at a higher position, and it is not necessary to add additional structures, thereby reducing production costs and saving the internal space of the shell 110.

[0103] See also Figure 6 , Figure 7 , Figure 8 and Fig.10 In one embodiment of the present invention, a labyrinth structure 134 is provided at the end of the suction port 133 facing the water storage tank 130 .

[0104] Specifically, since the passage in the maze structure 134 is tortuous, under the suction action of the suction motor, the gas in the water storage tank 130 can flow into the suction port 133 through the maze structure 134, and due to the obstruction of the maze structure, the water vapor in the water storage tank 130 can be effectively blocked from entering the suction duct 113, thereby avoiding damage to the suction motor.

[0105] See also Fig. 9 and Fig.11 In one embodiment of the present invention, the labyrinth structure 134 may include a first channel 1344 and a second channel 1345. The inlet of the first channel 1344 is connected to the water storage tank 130, and the outlet of the second channel 1345 is connected to the suction port 133. The first channel 1344 and the second channel 1345 are connected, and the flow directions of the gases in the first channel 1344 and the second channel 1345 are opposite.

[0106] Specifically, in Fig. 9 and Fig.11In the figure, the black arrows indicate the flow direction of the gas in the first channel 1344 and the second channel 1345 and the vicinity thereof. Under the suction action of the suction motor, the gas inside the water storage tank 130 first flows into the first channel 1344 from the inlet of the first channel 1344, then the gas flows into the second channel 1345 through the first channel 1344, then the gas flows into the suction port 133 from the outlet of the second channel 1345, and finally the gas flows from the suction port 133 into the suction duct 113 to the suction motor. In this embodiment, only the maze structure 134 consisting of the first channel 1344 and the second channel 1345 is provided. In other embodiments, a maze structure 134 consisting of at least two channels may also be included, and the maze structure 134 may be configured differently based on different channels.

[0107] See also Fig. 9 and Fig.11 In one embodiment of the present utility model, the labyrinth structure 134 includes a first connecting plate 1341, a second connecting plate 1342, and a third connecting plate 1343. The third connecting plate 1343 is disposed between the first connecting plate 1341 and the second connecting plate 1342, so that a first channel 1344 is formed between the first connecting plate 1341 and the third connecting plate 1343, and a second channel 1345 is formed between the second connecting plate 1342 and the third connecting plate 1343. The side of the third connecting plate 1343 away from the first connecting plate 1341 can be connected to the housing 110 next to the suction port 133, and the third connecting plate 1343 is disposed corresponding to the suction port 133.

[0108] Specifically, the third connecting plate 1343 is connected to the housing 110 next to the suction port 133, and the third connecting plate 1343 corresponds to the position of the suction port 133, so that a relatively closed area is formed between the third connecting plate 1343, the housing 110 and the suction port 133 on the partition plate 140, so that the gas in the water storage tank 130 flows into the suction port 133 through the maze structure 134, and can effectively prevent the water vapor in the water storage tank 130 from entering the suction duct 113. There is no restriction on the specific shape and path of the channel in the maze structure 134, and it can be specifically set based on different application scenarios.

[0109] See also Fig. 9 and Fig.11In one embodiment of the utility model, in the labyrinth structure 134, the first connecting plate 1341 and the second connecting plate 1342 can be connected to the partition plate 140, and there is a gap between the third connecting plate 1343 and the partition plate 140 on the side close to the first connecting plate 1341. The gas in the water storage tank 130 flows into the first channel 1344, and due to the existence of the gap, the gas can flow into the second channel 1345 through the first channel 1344. By forming the labyrinth structure 134 with the first connecting plate 1341, the second connecting plate 1342, the third connecting plate 1343 and the partition plate 140, the spatial structure of the partition plate 140 is fully utilized, thereby reducing the production cost and saving the internal space of the housing 110.

[0110] See also Fig.12 and Fig.13 In one embodiment of the present invention, from the above analysis of the middle cavity 1131 , it can be seen that the partition plate 140 divides the shell 110 into the separation chamber 120 and the water storage chamber 130 , and the water hole 141 can be opened on the partition plate 140 .

[0111] Specifically, the water hole 141 may be formed between the partition plate 140 and the inner wall of the housing 110. When the fuselage 30 is in a flat state, the water hole 141 may be located at the bottom of the housing 110. The water hole 141 may also be formed separately on the partition plate 140.

[0112] See also Fig.12 and Fig.13 In one embodiment of the utility model, a solid-liquid separator may be provided in the separation bin 130, and a plurality of separation holes are provided on the solid-liquid separator, and the plurality of separation holes are used to separate the dirt transported by the sewage inlet pipe 150 into solid and liquid, so that the solid waste is retained on the solid-liquid separator, and the liquid waste flows through the separation holes and flows into the water storage bin 130 through the water hole 141 and the anti-backflow pipe 131. The solid-liquid separator may be arranged along the length extension direction of the sewage inlet pipe 150, and the spatial structure of the solid-liquid separator is arranged to the maximum extent within the limited space of the separation bin 120, so that the internal space of the housing 110 can be reasonably and fully utilized.

[0113] See also Fig.12 In one embodiment of the present invention, a cover is further provided on the shell 110 , and the cover can be buckled on the opening of the sewage tank 20 .

[0114] Specifically, the cover body may be provided with a detection conductive sheet seat 118, a sewage tank upper cover 115 and an installation buckle seat 116. Among them, the detection conductive sheet seat 118 can be used to install the detection conductive sheet 114. The sewage tank upper cover 115 and the installation buckle seat 116 on the top of the shell 110 play the role of installing the sewage tank 10 in the fuselage 30. The cover body may be provided with a HEPA 117, and the gas in the separation chamber 120 and the water storage chamber 130 is finally gathered to the suction motor above through the HEPA 117.

[0115] See also Fig.13 and Fig.14 In one embodiment of the utility model, the solid-liquid separator is configured as a filter plate 121, and a plurality of filter holes are opened on the filter plate 121. At least one side of a portion of the filter plate is recessed to form a filter cavity. When the body 30 is in a lying state, the opening of the filter cavity is arranged upward.

[0116] Specifically, in the separation bin 120, after the separation effect of the filter plate 121, the solid waste is retained on the filter plate 121, and the liquid waste flows to the bottom of the separation bin 120. The filter plate 121 is set to be concave on one side to form a filter cavity, and the opening of the filter cavity faces upward when the body 30 is in a flat state. The advantage is that the concave shape has a larger surface area than other shapes and can accommodate more solid waste. The solid waste lies flat on the larger concave surface, which can improve the solid-liquid separation efficiency of the filter plate 121.

[0117] See also Fig.13 and Fig.14 In one embodiment of the present invention, when the water hole 141 is formed separately on the partition plate 140, the water hole 141 is arranged at the bottom of the filter plate 121, so that dirt first passes through the filter plate 121 and then passes through the water hole 141. When the water hole 141 is formed between the partition plate 140 and the inner wall of the housing 110 (not shown in the figure), when the body 30 is in a flat state, the water hole 141 is located at the bottom of the housing 110.

[0118] Specifically, when the fuselage 30 is in a vertical state or a flat state, in the separation bin 120, through the separation effect of the filter plate 121, the solid waste is retained on the surface of the filter plate 121, and the liquid waste passes through the filter holes of the filter plate 121. Since the water holes 141 are arranged at the bottom of the filter plate 121, the liquid waste can quickly flow into the water holes 141. The rapid flow of liquid waste into the water holes 141 allows the liquid waste to flow into the water storage bin 130 faster, avoiding excessive liquid waste in the separation bin 120, thereby improving the solid-liquid separation efficiency in the separation bin 120.

[0119] See also Figure 6 , Fig.13 and Fig.14In one embodiment of the present invention, the suction duct 113 is disposed on one side of the filter plate 121, and the suction duct 113 is isolated from the separation chamber 120. Under the suction action of the suction motor, the suction duct 113 is isolated from the separation chamber 120, thereby preventing the water vapor in the separation chamber 120 from being brought into the suction duct 113.

[0120] See also Fig.15 In one embodiment of the utility model, the cleaning device separates the water vapor, solid and liquid in the dirt as follows. First, under the suction action of the suction motor, the dirt is sucked into the sewage inlet pipe 150, and the dirt flows along the inner cavity of the sewage inlet pipe 150 to the outlet 151 of the sewage inlet pipe 150, and the dirt flows into the separation bin 120 from the outlet 151 of the sewage inlet pipe 150. Secondly, the dirt entering from the outlet 151 of the sewage inlet pipe 150 flows into the filter plate 121, and under the separation action of the filter plate 121, the solid-liquid separation of the dirt is achieved. The solid garbage is retained on the surface of the filter plate 121, and the liquid garbage passes through the separation hole of the filter plate 121 and continues to flow into the position of the water hole 141. Then, the liquid garbage in the water hole 141 can flow into the anti-backflow pipe 131, and the liquid garbage in the anti-backflow pipe 131 flows into the water storage bin 130.

[0121] See also Fig.16 In one embodiment of the present invention, when the cleaning device is in normal working state, that is, the body 30 is in a vertical state, the process of separating water vapor, solid and liquid in the dirt is as follows.

[0122] First, under the suction action of the suction motor, the dirt is sucked into the sewage inlet pipe 150, and the dirt flows along the inner cavity of the sewage inlet pipe 150 to the outlet 151 of the sewage inlet pipe 150, and the dirt flows into the separation bin 120 from the outlet 151 of the sewage inlet pipe 150. In the separation bin 120, the dirt entering from the outlet 151 of the sewage inlet pipe 150 flows onto the filter plate 121, and under the separation action of the filter plate 121, the solid-liquid separation of the dirt is achieved. The solid waste is retained on the surface of the filter plate 121, and the liquid waste passes through the separation holes of the filter plate 121 and continues to flow to the position of the water hole 141. As for the flow direction of the solid waste in the separation bin 120, Fig.11 It is indicated by the black arrow at the filter plate 121.

[0123] Secondly, in the separation chamber 120, a negative pressure airflow is provided to the separation chamber 120 through a suction motor, so that the gas in the separation chamber 120 flows into the suction motor through the first baffle 111, the air inlet 112, and the HEPA 117, thereby achieving gas-liquid separation of the dirt. Fig.11 It is indicated by the black arrow at the outlet of the sewage inlet pipe 150 and the first baffle 111.

[0124] Then, the liquid waste in the water hole 141 flows into the anti-backflow pipe 131, and under the action of gravity, the liquid waste in the anti-backflow pipe 131 flows into the water storage tank 130. Fig.11 It is indicated by the black arrows at the anti-backflow pipe 131 and the water storage tank 130. The suction motor provides negative pressure airflow to the water storage tank 130, so that the gas in the water storage tank 130 flows into the suction motor through the suction port 133, the suction air duct 113, and the HEPA 117.

[0125] See also Fig.17 In one embodiment of the present invention, when the body 30 is in a lying state, that is, the body 30 is in a horizontal state, the process of separating water vapor, solid and liquid in the dirt is as follows.

[0126] First, under the suction action of the suction motor, the dirt is sucked into the sewage inlet pipe 150, and the dirt flows along the inner cavity of the sewage inlet pipe 150 to the outlet 151 of the sewage inlet pipe 150, and the dirt flows into the separation bin 120 from the outlet 151 of the sewage inlet pipe 150. In the separation bin 120, the dirt entering from the outlet 151 of the sewage inlet pipe 150 flows onto the filter plate 121, and under the separation action of the filter plate 121, the solid-liquid separation of the dirt is achieved. The solid waste is retained on the surface of the filter plate 121, and the liquid waste passes through the separation holes of the filter plate 121 and continues to flow to the position of the water hole 141. As for the flow direction of the solid waste in the separation bin 120, Fig.12 It is indicated by the black arrow at the filter plate 121.

[0127] Secondly, in the separation chamber 120, a negative pressure airflow is provided to the separation chamber 120 through a suction motor, so that the gas in the separation chamber 120 flows into the suction motor through the first baffle 111, the air inlet 112, and the HEPA 117, thereby achieving gas-liquid separation of the dirt. Fig.12 It is indicated by the black arrow at the outlet of the sewage inlet pipe 150 and the first baffle 111.

[0128] Then, after the liquid waste in the water hole 141 flows into the backflow prevention pipe 131, the liquid in the backflow prevention pipe 131 continues to accumulate. When the height of the liquid waste exceeds the top of the backflow prevention pipe 131, the liquid waste in the backflow prevention pipe 131 flows into the water storage tank 130. Fig.12 It is indicated by the black arrows at the anti-backflow pipe 131 and the water storage tank 130. The suction motor provides negative pressure airflow to the water vapor storage tank 130, so that the gas in the water storage tank 130 flows into the suction motor through the suction port 133, the suction duct 113, and the HEPA 117.

[0129] See also Fig.16 and Fig.17 In one embodiment of the present utility model, a comparative analysis is performed with the fuselage 30 being in a normal working state and a flat lying state.

[0130] First, when the body 30 is in a vertical state or a flat state, dirt enters the separation chamber 120 through the outlet 151 of the dirt inlet pipe 150 .

[0131] Secondly, when the liquid garbage flows into the water hole 141 and the anti-backflow pipe 131, the working principles of the body 30 in the normal working state and the lying state are different.

[0132] Specifically, when the body 30 is in a vertical state, the liquid waste flows into the water storage bin 130 due to gravity, and even if the anti-backflow pipe 131 is not provided, the liquid waste inside the water storage bin 130 will not flow back into the separation bin 120 .

[0133] Specifically, when the body 30 is in a flat state, liquid waste may flow into the water storage bin 130. Therefore, by providing the anti-backflow pipe 131, the liquid waste can flow into the water storage bin 130 only when the height exceeds the top of the anti-backflow pipe 131, and the liquid waste inside the water storage bin 130 will not flow back into the separation bin 120. When the body 30 is in a vertical state or a flat state, it is necessary to ensure that the liquid waste separated by the filter plate 121 flows into the water storage bin 130 and does not flow back into the separation bin 120, so that the liquid level of the liquid waste in the separation bin 120 can be lower.

[0134] Then, the liquid waste flows into the water storage tank 130. When the fuselage 30 is in a vertical state, the liquid waste is located on the side of the water storage tank 130 away from the anti-backflow pipe 131. When the fuselage 30 is in a flat state, the liquid waste is located on the side of the water storage tank 130 away from the sewage inlet pipe 150.

[0135] To sum up, the utility model proposes a sewage tank and a cleaning equipment using the same, which has the advantages of simple structure, good maintainability and low cost, and solves the problem that sewage enters the HEPA and the suction motor when the sewage tank of the cleaning equipment is lying flat, causing the suction motor to fail.

[0136] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention. As used in the description herein and in the entire claims below, unless otherwise specified, "one", and "the" include plural references. Similarly, as used in the description herein and in the entire claims below, unless otherwise specified, the meaning of "in..." includes "in..." and "on...".

Claims

1. A cleaning device, characterized in that: The invention comprises a body, wherein a sewage tank and a suction motor connected to the sewage tank are arranged in the body, and the sewage tank comprises: The housing comprises a separation chamber and a water storage chamber, a water hole is provided between the separation chamber and the water storage chamber, the separation chamber is configured to separate the dirt sucked into the sewage tank by the suction motor into solid and liquid, and an end of the water hole facing the water storage chamber is connected to an anti-backflow component; A sewage inlet pipe is arranged in the shell, and an outlet of the sewage inlet pipe is arranged in the separation chamber; When dirt enters the separation bin, liquid in the dirt is introduced into the water storage bin through the water hole, and the backflow prevention component is used to prevent the liquid in the water storage bin from flowing back into the separation bin.

2. The cleaning device according to claim 1, characterized in that The backflow prevention component includes a backflow prevention pipe, which is connected to the water hole. The liquid in the separation bin is introduced into the water storage bin through the water hole and the backflow prevention pipe.

3. The cleaning device according to claim 2, characterized in that: When the cleaning device is in a lying state, the outlet of the anti-backflow pipe faces the top of the water storage tank, and the water hole is located at the bottom of the shell. The lying state means that the body is laid flat and the angle between it and the surface to be cleaned is in the range of 0° to 30°.

4. The cleaning device according to claim 2, characterized in that: The central axis of the water hole is parallel to the central axis of the sewage inlet pipe, the backflow prevention pipe is configured as a round pipe, and the angle between the central axis of the backflow prevention pipe and the central axis of the water hole is 90° to 135°.

5. The cleaning device according to claim 2, characterized in that: A partition plate is provided, which divides the shell into the separation bin and the water storage bin. The anti-backflow pipe is configured as a non-circular tube structure and includes a side wall spaced apart from the partition plate. The angle between the side wall and the central axis of the water hole is 90° to 135°.

6. The cleaning device according to claim 1, characterized in that A suction duct is provided in the shell, one end of the suction duct is connected to the water storage tank, and the other end is connected to the suction motor, so that when the suction motor is working, the gas in the water storage tank flows toward the suction motor through the suction duct.

7. The cleaning device according to claim 6, characterized in that A partition plate is provided to divide the shell into the separation bin and the water storage bin. The partition plate is located on one side of the water storage bin and is provided with a suction port, and the suction port is communicated with the suction air duct.

8. The cleaning device according to claim 7, characterized in that A middle cavity is provided in the partition plate, the suction port is arranged on one side of the middle cavity, and the other side of the middle cavity is connected with the suction duct. When the cleaning device is in a lying state, the suction port is arranged to be located above the suction duct. The lying state means that the body of the cleaning device is laid flat and the angle between the body and the surface to be cleaned is in the range of 0° to 30°.

9. The cleaning device according to claim 8, characterized in that The projection of the suction port on the partition surface is staggered with the projection of the connection position between the suction air duct and the intermediate cavity on the partition surface, and the partition surface is configured as the plane where the partition plate is located.

10. The cleaning device according to claim 7, characterized in that A labyrinth structure is provided outside the port of the suction port toward the water storage bin, and the labyrinth structure prolongs the distance that the water vapor in the water storage bin enters the suction air duct.

11. The cleaning device according to claim 10, characterized in that The maze structure includes a first channel and a second channel, the inlet of the first channel is connected to the water storage tank, the first channel is connected to the second channel and the flow direction of the internal gas is opposite, the outlet of the second channel is connected to the suction port, and the airflow in the water storage tank is sucked by the suction motor and then enters the suction motor through the first channel to the second channel.

12. The cleaning device according to claim 11, characterized in that The labyrinth structure includes a first connecting plate, a second connecting plate and a third connecting plate, wherein the third connecting plate is arranged between the first connecting plate and the second connecting plate to form the first channel and the second channel, and a side of the third connecting plate away from the first connecting plate is connected to the shell next to the suction port.

13. The cleaning device according to claim 12, characterized in that The first connecting plate and the second connecting plate are connected to the partition plate, and a gap exists between a side of the third connecting plate close to the first connecting plate and the partition plate.

14. The cleaning device according to claim 7, characterized in that The water holes are arranged on the partition plate.

15. The cleaning device according to claim 14, characterized in that A solid-liquid separation component is arranged in the separation bin, and a plurality of separation holes are opened on the solid-liquid separation component for performing solid-liquid separation on dirt flowing through the separation bin.

16. The cleaning device according to claim 15, characterized in that It comprises a cover body, which can be buckled on the opening of the sewage tank. One end of the solid-liquid separator is connected to the cover body, and the other end is connected to the partition plate.

17. The cleaning device according to claim 15, characterized in that The solid-liquid separator is configured as a filter plate, and a plurality of filter holes are formed on the filter plate. At least one side of a portion of the filter plate is recessed to form a filter cavity. When the cleaning device is in a lying state, the opening of the filter cavity is arranged upward. The lying state means that the body of the cleaning device is laid flat and the angle between the body and the surface to be cleaned is in the range of 0° to 30°.

18. The cleaning device according to claim 17, characterized in that The water passage hole is formed separately on the partition plate, and the water passage hole is arranged at the bottom of the filter plate, so that at least part of the dirt passes through the filter plate first and then passes through the water passage hole.

19. The cleaning device according to claim 14, characterized in that The water hole is formed between the partition plate and the inner wall of the shell. When the cleaning device is in a lying state, the water hole is located at the bottom of the shell. The lying state means that the body is laid flat and the angle between it and the surface to be cleaned is in the range of 0° to 30°.

20. The cleaning device according to claim 17, wherein the suction air duct is disposed on one side of the filter plate, and the suction air duct is isolated from the separation bin.

21. A sewage tank, characterized in that: The sewage tank is used to communicate with an externally connected suction motor to achieve dirty suction, and includes: The housing comprises a separation chamber and a water storage chamber, a water hole is provided between the separation chamber and the water storage chamber, the separation chamber is configured to separate dirt into solid and liquid, and an anti-backflow component is connected to one end of the water hole facing the water storage chamber; A sewage inlet pipe is arranged in the shell, and an outlet of the sewage inlet pipe is arranged in the separation chamber; When dirt enters the separation bin, liquid in the dirt is introduced into the water storage bin through the water hole, and the backflow prevention component is used to prevent the liquid in the water storage bin from flowing back into the separation bin.

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