Sewage tank and cleaning electric appliance

Abstract

The utility model discloses a sewage tank and a cleaning electric appliance, the sewage tank comprises a tank body, a tank cover, a water inlet pipeline and a baffle plate, specifically, the tank body is provided with an accommodating cavity; the box cover is connected to the box body; the water inlet pipeline is provided with a water outlet end, and the water outlet end is located in the containing cavity. The baffle is located in the containing cavity. Wherein the sewage tank is provided with an air return port, and the water outlet end faces the direction far away from the tank cover; the air return port and the water outlet end are located on the same side of the baffle. When the sewage tank is used at a large angle, a gas-liquid mixture enters the water inlet pipeline and then enters the containing cavity from the water outlet end, the water outlet end is far away from the air return port, sewage is blocked by the baffle and cannot overflow to the air return port, meanwhile, the water outlet end and the air return port are located on the same side of the baffle, and the sewage cannot easily flow back to the water outlet end of the water inlet pipeline; and the condition of water return when the sewage tank is used at a large angle can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning electrical appliances, in particular to a sewage tank and a cleaning electrical appliance. Background Art

[0002] A floor scrubber is a cleaning appliance that integrates vacuuming and mopping functions, and can meet users' daily cleaning needs for floors, table corners, wall seams, etc. Existing floor scrubbers are generally top-spraying type, with sewage entering through the water inlet pipe set inside the sewage tank, and the gas-liquid mixture impacting the top of the sewage tank and then turning into the water storage part of the sewage tank, with the liquid remaining in the water storage part and the gas flowing out from the return air port.

[0003] For cleaning in some specific scenarios, such as under sofas and beds, the floor scrubber needs to be laid flat at a large angle. The existing water inlet pipe of the floor scrubber is located in the lower middle of the sewage tank. When used at a large angle, sewage is easy to flow back into the water inlet pipe and overflow into the air return port, affecting the use effect. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a sewage tank, which can effectively prevent sewage from overflowing to the air return port or backflowing to the water inlet pipe when the sewage tank is used at a large angle.

[0005] The utility model also provides a cleaning appliance with the sewage tank.

[0006] According to the first aspect of the present invention, the sewage tank comprises:

[0007] The box body is provided with a containing cavity;

[0008] A box cover connected to the box body;

[0009] A water inlet pipe, provided with a water outlet end, wherein the water outlet end is located in the accommodating cavity;

[0010] a baffle, located in the accommodating cavity;

[0011] Wherein, the sewage tank is provided with an air return port, and the water outlet is oriented in a direction away from the tank cover; the air return port and the water outlet are located on the same side of the baffle.

[0012] The sewage tank according to the embodiment of the utility model has at least the following beneficial effects: the sewage tank improves the setting of the water inlet pipe and the air return port, and sets a baffle in the chamber of the sewage tank to prevent the sewage from overflowing to the air return port or flowing back to the water inlet pipe when the sewage tank is used at a large angle. Specifically, when the sewage tank is tilted at a large angle, the gas-liquid mixture enters the water inlet pipe, and then enters the chamber of the sewage tank from the water outlet. The water outlet is far away from the air return port, and the sewage is blocked by the baffle and is not easy to overflow to the air return port. At the same time, the water outlet and the air return port are located on the same side of the baffle, and the sewage is not easy to flow back to the water outlet of the water inlet pipe.

[0013] According to some embodiments of the present invention, the air return port is located on the box cover, or on a portion of the box body close to the box cover.

[0014] According to some embodiments of the present utility model, the sewage tank has a first direction and a second direction perpendicular to each other, the air return port and the water outlet are arranged along the first direction, and the air return port and the water outlet are located on one side of the baffle in the second direction.

[0015] According to some embodiments of the present utility model, the baffle includes a first water retaining section and a second water retaining section, the first water retaining section is located on a side of the second water retaining section close to the box cover, and the maximum distance L1 between the first water retaining section and the central axis of the water outlet end is smaller than the minimum distance L2 between the second water retaining section and the central axis of the water outlet end.

[0016] According to some embodiments of the utility model, the water outlet is provided with a guide portion, which is located on a side of the water outlet away from the baffle and protrudes from the water outlet along the direction of the water outlet, and along the direction of the water outlet, the area of ​​the guide portion in the cross section gradually decreases, and the cross section is perpendicular to the direction of the water outlet.

[0017] According to some embodiments of the utility model, along the first direction, the guide portion is provided with a guide surface, and along the direction of the water outlet end, the guide surface guides the water flow along the inner wall surface of the water inlet pipe to the central axis of the water outlet end.

[0018] According to some embodiments of the utility model, the sewage tank further comprises an electrode sheet mounted on the tank cover, and along the arrangement direction of the water outlet and the baffle, the baffle covers the end of the electrode sheet connected to the tank cover.

[0019] According to some embodiments of the present invention, along the direction of the water outlet, the electrode sheet and the water outlet protrude from the baffle, and on a projection plane perpendicular to the second direction, the electrode sheet and the water outlet are staggered.

[0020] According to some embodiments of the present utility model, the water inlet pipe and the baffle are installed on the box cover.

[0021] According to some embodiments of the utility model, the water inlet pipe is passed through the baffle, and the water inlet pipe is provided with a water inlet end, and the water inlet end is located on a side of the baffle away from the water outlet end.

[0022] According to some embodiments of the utility model, the sewage tank is provided with an air return channel located between the water inlet pipe and the tank cover, the air return channel having an air inlet end and an air outlet end, the air inlet end is located on one side of the baffle, at least part of the air outlet end is located on the other side of the baffle, and the air return port is located at the air inlet end.

[0023] According to some embodiments of the utility model, a notch is provided at one end of the baffle plate close to the box cover, and the sewage tank further includes a surrounding plate and a filter, the surrounding plate is arranged around the edge of the notch, a part of the structure of the surrounding plate is located on one side of the baffle plate, and another part of the structure of the surrounding plate is located on the other side of the baffle plate, the surrounding plate connects the water inlet pipe and the box cover to form the return air channel, the notch is located in the return air channel, and the filter is located at the air outlet end.

[0024] The cleaning appliance according to the second embodiment of the utility model comprises:

[0025] A sewage tank as in the first aspect embodiment of the utility model.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 A schematic diagram of a water tank according to an embodiment of the utility model;

[0029] Figure 2 for Figure 1 A cross-sectional view of the water tank shown in a first use state;

[0030] Figure 3 for Figure 1 A cross-sectional view of the water tank shown in a second use state;

[0031] Figure 4 for Figure 1 The schematic diagram of the assembly formed by assembling the water tank cover, the electrode sheet, the water inlet pipe and the baffle;

[0032] Figure 5 for Figure 4 A front view of the assembly is shown;

[0033] Figure 6 for Figure 4 A side view of the assembly is shown;

[0034] Figure 7 The figure is a schematic diagram of a cleaning appliance according to an embodiment of the utility model.

[0035] Reference numerals:

[0036] Water tank 100, box body 110, accommodating chamber 111, box cover 120, air return port 121, water inlet pipe 130, water outlet end 131, guide part 132, water inlet end 133, baffle 134, first water retaining section 135, second water retaining section 136, electrode sheet 140, connecting section 141, detection section 142, insulating member 143, enclosure 150, filter 160, fuselage 200, clean water tank 210, floor brush 220. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] A floor scrubber is a cleaning appliance that integrates vacuuming and mopping functions, and can meet users' needs for cleaning daily scenes such as floors, table corners, and wall seams. Existing floor scrubbers are generally top-spraying type, with a water inlet pipe in the sewage tank. The water outlet of the water inlet pipe is generally set downward, that is, toward the bottom of the sewage tank, and the return air port of the sewage tank is generally set at the top of the sewage tank. When working, sewage enters through the water inlet pipe set inside the sewage tank, and the gas-liquid mixture is sprayed from the water outlet of the water inlet pipe into the water storage part of the sewage tank. The liquid remains in the water storage part, and the gas flows out from the return air port.

[0042] For cleaning in some specific scenarios, such as under sofas and beds, the floor scrubber needs to be laid flat at a large angle. The existing water inlet pipe of the floor scrubber is located in the lower middle of the sewage tank. When used at a large angle, sewage is easy to flow back into the water inlet pipe and overflow into the air return port, affecting the use effect.

[0043] In view of the technical problems existing in the prior art, the utility model proposes a sewage tank, which improves the arrangement of the water inlet pipe and the air return port, and arranges a baffle in the chamber of the sewage tank to prevent the sewage from overflowing to the air return port or flowing back to the water inlet pipe when the sewage tank is used at a large angle. Specifically, when the sewage tank is tilted at a large angle, the gas-liquid mixture enters the water inlet pipe, and then enters the chamber of the sewage tank from the water outlet. The water outlet is far away from the air return port, and the sewage is blocked by the baffle and cannot overflow to the air return port. At the same time, the water outlet and the air return port are located on the same side of the baffle, and the sewage is not easy to flow back to the water outlet of the water inlet pipe.

[0044] Reference Figures 1 to 3 The sewage tank 100 provided by the first embodiment of the utility model includes a box body 110, a box cover 120, a water inlet pipe 130 and a baffle 134. The box body 110 is provided with a receiving chamber 111 inside, the box cover 120 is connected to the box body 110, the box cover 120 is provided with an air return port 121 connected to the receiving chamber 111, the water inlet pipe 130 is provided with a water outlet end 131, the water outlet end 131 is located in the receiving chamber 111, and the baffle 134 is also provided in the receiving chamber 111.

[0045] It can be understood that the sewage tank 100 has a first direction and a second direction perpendicular to each other, such as Figure 2 As shown in the figure, the first direction is the up-down direction shown in the figure, and the second direction is the front-back direction shown in the figure; Figure 3 As shown in the figure, the first direction is the length direction of the water tank shown in the figure, and the second direction is the direction perpendicular to the length direction of the water tank. The air return port 121 and the water outlet 131 are arranged along the first direction, and the water outlet 131 is oriented away from the air return port 121; in the second direction, the air return port 121 and the water outlet 131 are located on the same side of the baffle 134. Figure 2 and Figure 3As shown, the advantage of such a design is that the sewage enters the accommodating chamber 111 from the water outlet end 131 far away from the return air port 121, and the initial direction of the fluid entering the accommodating chamber 111 is to flow in the direction away from the return air port, and the water sprayed out from the water outlet end 131 is not easy to directly enter the return air port 121; at the same time, the return air port 121 and the water outlet end 131 are located on the same side of the baffle 134, so that when used at a large angle, the return air port 121 and the water outlet end 131 are located on the upper side of the baffle 134, and the sewage is collected on the lower side of the baffle 134. The baffle 134 prevents the sewage from shaking upward, and the position of the water outlet end 131 is set higher than the water level of the sewage. The sewage sprayed out from the water outlet end 131 forms a certain impact force, which can also inhibit the sewage from flowing toward the water outlet end 131, and the sewage is not easy to flow back to the water outlet end 131.

[0046] In addition, when the improved structure of the sewage tank 100 provided in the embodiment of the first aspect of the utility model is used normally vertically, the space utilization rate inside the sewage tank 100 is high, and the setting of the baffle 134 will not occupy too much space of the accommodating cavity 111; when used at a large angle, the baffle 134 can effectively prevent sewage backflow and overflow.

[0047] It should be noted that, in other embodiments, the air return port 121 can also be provided on the box body 110, and the air return port 121 is located at a part of the box body 110 close to the box cover 120, for example, the air return port 121 can be located in the upper half of the box body 110. The air return port 121 is located close to the box cover 120, that is, there is a certain distance between the air return port 121 and the bottom of the box body 110. When the sewage tank 100 is used vertically, the air return port 121 is located at the upper part of the box body 110, so that sewage is not easy to enter the air return port 121. The water outlet 131 is oriented away from the box cover 120. The air return port 121 can be located between the water outlet 131 and the box cover 120, or it can be located on the side of the water outlet 131 away from the baffle 134, so as to prevent the sewage discharged from the water outlet 131 from directly heading toward the air return port 121. In addition, the air return port 121 and the water outlet end 131 are located on the same side of the baffle 134. When the sewage tank 100 is tilted for use, the air return port 121 and the water outlet end 131 are located on the upper side of the baffle 134. The sewage enters the tank body 110 from the water outlet end 131, and then flows to the side of the baffle 134 away from the air return port 121 and the water outlet end 131 and is blocked by the baffle 134. When the tank body 110 is tilted for use below a predetermined water level, the sewage in the tank body 110 cannot easily overflow to the air return port 121. At the same time, since the air return port 121 is close to the tank cover 120 and the water outlet end 131 is directed away from the tank cover 120, the sewage sprayed from the water outlet end 131 is not easy to splash to the air return port 121.

[0048] It should be noted that “the air return port 121 and the water outlet 131 are arranged along the first direction, and the water outlet 131 is oriented away from the air return port 121” can be arranged in several ways. Figure 2 As shown, the water outlet 131 may be arranged perpendicular to the bottom of the sewage tank 100 ; in other embodiments, the water outlet 131 may have a certain inclination angle, inclining toward a side close to the baffle 134 or inclining toward a side away from the baffle 134 .

[0049] It should be noted that if Figure 2 and Figure 3 As shown, the box cover 120 of the sewage tank 100 provided by the embodiment of the first aspect of the utility model is detachably mounted on the box body 110, generally installed by snap-fit, and is easy to disassemble. The water inlet pipe 130 is arranged on the box cover 120, and the water inlet pipe 130 presents an L-shaped structure. The installation method of the sewage tank 100 is front installation, and the water inlet end 133 of the water inlet pipe 130 is located at the rear of the box body 110. The water inlet pipe 130 and the baffle 134 are both installed on the box cover 120. This arrangement allows the water inlet pipe 130 and the baffle 134 to be removed together with the box cover 120. The product has a high degree of integration and is easy to remove for cleaning. The structure is concentrated on the box cover 120, and the box body 110 is empty, which does not affect the utilization rate of the sewage tank 100 during normal use.

[0050] It should be noted that the water inlet pipe 130 is passed through the baffle 134, and the water inlet end 133 of the water inlet pipe 130 is located on the side of the baffle 134 away from the water outlet end 131. Since the sewage tank 100 provided in the first aspect of the utility model is a pre-sewage tank 100, that is, installed in front of the clean water tank 210, the water inlet end 133 is set on the side of the baffle 134 away from the water outlet end 131, which effectively reduces the setting of the pipeline. When the sewage tank 100 is used at a large angle, the water outlet end 131 is located at the top, and the water inlet end 133 is correspondingly set at the bottom, and the sewage entering from the water inlet end 133 will gradually decrease.

[0051] It should be noted that, in other embodiments, the water inlet pipe 130 can be directly set on the box body 110 and located in the accommodating cavity 111, the water inlet end 133 of the water inlet pipe 130 is set at the bottom of the box body 110, and the water outlet end 131 is bent toward the bottom of the sewage tank 100, that is, away from the direction of the return air port 121 of the box cover 120.

[0052] It can be understood that the position of the water inlet pipe 130 and the position of the water inlet end 133 are not specially limited, and the position of the water outlet end 131 satisfies "the return air port 121 and the water outlet end 131 are arranged along the first direction, and the direction of the water outlet end 131 is away from the return air port 121; in the second direction, the return air port 121 and the water outlet end 131 are located on the same side of the baffle 134".

[0053] It should be noted that the box body 110 is generally made of plastic material and is formed in one piece by injection molding. The box body 110 is generally designed to be transparent, or is provided with a transparent observation part to facilitate observation of the amount of sewage in the box body 110. At present, the box body 110 of the sewage tank 100 in the industry is generally made of polyethylene or polypropylene. Polyethylene has high corrosion resistance and impact resistance, and has good sealing performance; in addition, polyethylene material also has low temperature resistance and high temperature resistance, and can adapt to different climatic conditions. Polypropylene has good acid resistance, alkali resistance and high temperature resistance, among which PP-H material also has good cold resistance and is suitable for use in cold areas. Compared with the two, the ultraviolet resistance of polyethylene material is poor, and it is easy to age in sunlight, but the cost is lower. Polypropylene material has better performance and higher cost. The material of the box cover 120 is generally the same as that of the box body 110, and the difference is that the box cover 120 generally does not need to be designed to be transparent.

[0054] Reference Figures 4 to 6 The baffle 134 of the sewage tank 100 provided in the embodiment of the first aspect of the utility model includes a first water retaining section 135 and a second water retaining section 136, the first water retaining section 135 is located on the side of the second water retaining section 136 close to the tank cover 120, the first water retaining section 135 is a part of the baffle 134 connected to the tank cover 120, and the second water retaining section 136 is located on the side of the first water retaining section 135 away from the tank cover 120, wherein the maximum distance L1 between the first water retaining section 135 and the central axis of the water outlet end 131 is less than the minimum distance L2 between the second water retaining section 136 and the central axis of the water outlet end 131. The advantage of such a design is that when used at a large angle, the sewage at the first water retaining section 135 will not be filled before the sewage at the second water retaining section 136, and the sewage will flow to the first water retaining section 135 first. The second water retaining section 136 is located farther from the water outlet 131, which can block the shaking sewage and prevent the sewage from overflowing the baffle 134 and flowing into the return air port 121, thereby effectively increasing the water retaining capacity of the baffle 134 when used at a large angle.

[0055] Reference Figures 2 to 6 The sewage tank 100 further includes an electrode sheet 140, which includes a connecting section 141 and a detecting section 142. The detecting section 142 is used to detect the water level. The angle between the connecting section 141 and the detecting section 142 is an obtuse angle. The detecting section 142 is located on the side of the connecting section 141 away from the tank cover 120. The second water retaining section 136 is parallel to the detecting section 142 of the electrode sheet 140. The advantage of such a design is that it can effectively avoid interference with the baffle 134 when installing the electrode sheet 140.

[0056] It should be noted that if Figure 6As shown, the first water retaining section 135 is vertically arranged, and the second water retaining section 136 is inclined. The second water retaining section 136 is parallel to the detection section 142 of the electrode sheet 140 . The purpose of the inclined arrangement of the second water retaining section 136 is to avoid the bent electrode sheet 140 .

[0057] Reference Figures 2 to 6 The water outlet 131 is provided with a guide portion 132, which is located on a side of the water outlet 131 away from the baffle 134 and protrudes from the water outlet 131 along a first direction, that is, the guide portion 132 protrudes from the water outlet 131 along the direction of the water outlet 131. Along the direction of the water outlet 131, the area of ​​the guide portion 132 in the cross section gradually decreases, and the first direction is perpendicular to the cross section. Figures 4 to 6 As shown, the guide portion 132 is configured as a pointed elbow, which can effectively increase the air intake interception area. The air speed will decrease after passing through the guide portion 132 , thereby reducing the sewage entering the accommodating chamber 111 from splashing to the return air port 121 .

[0058] It should be noted that the sewage tank 100 has a first use state and a second use state. Figure 2 As shown, the first use state can be a vertical state or a state close to the vertical state, that is, the sewage tank 100 is placed in the vertical direction as a whole or the length direction of the sewage tank 100 has a small angle with the vertical direction, for example, the length direction of the sewage tank 100 has an angle with the vertical direction less than 45°, and this state corresponds to the state in which the floor scrubber is used vertically; Figure 3 As shown, the second use state can be a state of use at a large angle, that is, the sewage tank 100 is placed at a large angle or in a horizontal direction. For example, the angle between the length direction of the sewage tank 100 and the vertical direction is greater than 60°. This state corresponds to the state of the floor scrubber being used at an angle. In the first use state, the connecting section 141 is located above the detection section 142, and in the second use state, the detection section 142 is located above the connecting section 141.

[0059] It should be noted that if Figure 2 As shown, in the first use state, sewage enters the water inlet pipe 130 from the water inlet end 133 and then sprays out from the water outlet end 131. The guide part 132 has a guiding effect on the sewage and the airflow, and guides the sewage and the airflow to the rear side of the sewage tank 100. After the sewage hits the sewage tank 100, it flows downward to the bottom of the sewage tank 100, and the water level in the sewage tank 100 gradually rises. When the water surface contacts the detection section 142 of the electrode sheet 140, a water level alarm is issued. After hitting the sewage tank 100, the airflow will flow to the front side, and then flow toward the return air port 121 above. Due to the existence of the guide part 132, after the airflow hits the guide part 132, the interception area increases and the airflow velocity slows down, so that the airflow flowing into the return air port 121 is basically not accompanied by sewage.

[0060] It should be noted that if Figure 3 As shown, in the second use state, sewage enters the water inlet pipe 130 from the water inlet end 133 and then sprays out from the water outlet end 131. The guide part 132 has a guiding effect on the sewage and the airflow, and guides the sewage and the airflow to the bottom of the sewage tank 100. After the sewage hits the sewage tank 100, it flows forward, and the water level in the sewage tank 100 gradually rises. When the water surface contacts the detection section 142 of the electrode sheet 140, a water level alarm is issued. Different from the first use state, after the water level gradually rises, the sewage sprayed from the water outlet end 131 will hit the water surface, thereby raising water splashes. After hitting the water surface, the airflow carries part of the water splashes and flows to the top of the sewage tank 100 and flows toward the return air port 121 on the rear side of the sewage tank 100. Due to the existence of the guide part 132, the airflow will hit the guide part 132 before flowing to the return air port 121, the interception area is increased, the airflow velocity is slowed down, and the water splashes carried by the airflow will fall, so that the airflow flowing into the return air port 121 is basically not accompanied by sewage.

[0061] Reference Figures 2 to 6 The guide portion 132 provided in the first embodiment of the utility model also has the following characteristics: the guide portion 132 is located on the side of the water outlet 131 away from the baffle 134, and the guide portion 132 is provided with a guide surface, and the guide surface guides the water flow along the inner wall surface of the water inlet pipe 130 to the central axis of the water outlet 131 in the direction away from the return air port 121. The specific structure is as follows Figure 4 and Figure 5 As shown, the guide portion 132 is an elbow with the bottom converging inward, that is, the bottom converging inward toward the central axis of the water outlet end 131 of the water inlet pipe 130. When sewage is sprayed out from the water outlet end 131 and guided by the guide portion 132, the sewage will flow toward the central axis of the water outlet end 131 or have a tendency to flow toward the central axis of the water outlet end 131, and the water droplets hanging on the edge of the water outlet end 131 will not flow back to the return air port 121 along the outer wall of the pipe, but will flow along the guide surface to the central axis of the water outlet end 131, effectively avoiding the problem of backwater short circuit.

[0062] It should be noted that the length of the baffle 134 in the first direction cannot exceed the guide portion 132. The reason is that when sewage is sprayed out from the water outlet 131 of the water inlet pipe 130, if the length of the baffle 134 in the first direction exceeds the guide portion 132, the sprayed sewage will directly splash on the side of the baffle 134 close to the return air port 121, thereby causing backflow, that is, the sewage will move along the side of the baffle 134 close to the return air port 121 to the return air port 121, and flow from the return air port 121 to the fan.

[0063] Reference Figures 2 to 6, along the second direction, the baffle 134 covers the end of the electrode sheet 140 connected to the box cover 120. The electrode sheet 140 is arranged on the side of the baffle 134 away from the return air port 121 and the water outlet 131. The baffle 134 blocks the end of the electrode sheet 140 connected to the box cover 120. When sewage is sprayed from the water outlet 131, the baffle 134 can effectively block the sewage and prevent the sewage from splashing on the top of the electrode sheet 140. A dry area is formed on the top of the electrode sheet 140, which effectively avoids the occurrence of false alarms of the sewage tank 100 caused by top conduction.

[0064] It is understandable that when the sewage is a highly adhesive substance such as soy sauce, if the baffle 134 is not provided, the sewage will be sprayed out from the water outlet 131, and part of the sewage will splash onto the top of the electrode sheet 140 and the body of the electrode sheet 140, and the sewage will not easily flow down from the electrode sheet 140. When the positive and negative electrode sheets 140 are connected through the sewage on the top of the electrode sheet 140, a full water alarm will be issued, but at this time the sewage tank 100 is not full, resulting in a false alarm. The arrangement of the baffle 134 covering the top of the electrode sheet 140 effectively avoids the occurrence of false alarms. In addition, except for the protruding part used for detection, the rest of the electrode sheet 140 is covered with a rubber sleeve to achieve a partial insulation effect. This arrangement can effectively prevent the positive and negative electrodes from forming a loop with the sewage.

[0065] It should be noted that a portion of the electrode sheet 140 needs to protrude from the baffle 134 along the first direction, that is, the detection portion at the end protrudes from the baffle 134 along the first direction. This arrangement is conducive to the electrode sheet 140 detecting the water level in the sewage tank 100. Figure 2 and Figure 3 As shown, whether in normal use or in large-angle use, the electrode sheet 140 can effectively detect the sewage water level and issue an alarm when the sewage water level exceeds the normal use value range.

[0066] Reference Figures 4 to 6 In order to prevent the sewage sprayed from the water outlet 131 from splashing onto the electrode sheet 140 and causing a false alarm, the electrode sheet 140 and the water outlet 131 protrude from the baffle 134 along the first direction, and the electrode sheet 140 and the water outlet 131 are staggered on the projection plane perpendicular to the second direction. With this arrangement, the sewage sprayed from the water outlet 131 will not directly spray onto the protruding portion of the electrode sheet 140.

[0067] Reference Figures 2 to 6The sewage tank 100 is provided with an air return channel, which is located between the water inlet pipe 130 and the tank cover 120. The air return channel has an air inlet end and an air outlet end, the air inlet end is located on one side of the baffle 134, at least part of the air outlet end is located on the other side of the baffle 134, and the air return port 121 is located at the air inlet end. The air return channel spans across both sides of the baffle 134, thereby extending the air return path, increasing the air return interception area, and thereby reducing the air return speed and reducing the liquid mixed in the air flow.

[0068] Reference Figures 2 to 6 , the sewage tank 100 also includes a panel 150 and a filter 160, wherein a notch is provided at one end of the baffle 134 close to the box cover 120, the panel 150 is arranged around the edge of the notch, a part of the structure of the panel 150 is located on one side of the baffle 134 in the second direction, and another part of the structure of the panel 150 is located on the other side of the baffle 134 in the second direction, the panel 150 is connected to the outer wall of the water inlet pipe 130 and the bottom of the box cover 120 to form a return air channel, the filter 160 is located at the air outlet end of the return air channel, and the notch is located in the return air channel. The filter 160 is used to filter solid particles mixed in the gas to prevent the solid particles mixed in the gas from entering the inside of the fan. The air outlet end of the return air channel spans both sides of the baffle 134, so that a filter 160 with a larger area can be used, thereby improving the filtering efficiency.

[0069] It should be noted that, in other embodiments, the air return channel may also be a structure formed by a single pipe between the water inlet pipe 130 and the box cover 120 .

[0070] It is understandable that the enclosure 150 can block the sewage on the baffle 134 to prevent the sewage from flowing into the air return port 121. The enclosure 150 has a blocking effect on the sewage remaining on the baffle 134. For example, when there is sewage remaining on the baffle 134, using the sewage tank 100 at a large angle will cause the sewage on the baffle 134 to flow. At this time, the enclosure 150 plays a blocking role, blocking the sewage so that the sewage cannot flow into the air return port 121, thereby avoiding the occurrence of backflow. The height design of the enclosure 150 does not affect the air backflow in the sewage tank 100.

[0071] It is understandable that filter 160 is generally a HEPA filter element, which uses ultra-fine glass fiber paper as filter material, offset paper, aluminum film and other materials as partition plates, and is bonded with a wooden frame and aluminum alloy. It is made of special silicone rubber, has no odor, and the surface will not harden or crack over time. It has stable chemical properties and is corrosion-resistant. It can absorb the stress caused by thermal expansion and contraction without cracking. It has moderate hardness and good elastic recovery. Compared with ordinary filter elements, HEPA filter elements can filter out approximately 99.97% of fine particles in the air, such as pollen, dust mites, viruses, etc., and have an excellent filtering effect.

[0072] It should be noted that, in other embodiments, the filter 160 can also be a high-efficiency filter mesh, dust-proof cotton, etc., among which the high-efficiency filter mesh is one of the most common filter elements, mainly used to filter dust, fine particles, etc., and is generally taken out and cleaned once a week. The function of the dust-proof cotton is similar to that of the high-efficiency filter mesh, which is mainly used to filter dust, fine particles, etc. The price of dust-proof cotton is lower than that of the high-efficiency filter element.

[0073] Reference Figure 7 The cleaning appliance of the second embodiment of the utility model includes a sewage tank 100, a body 200, a clean water tank 210, a floor brush 220 and a charging base. A handle is provided on the top of the body 200, and the handle is convenient for the user to hold. A floor brush 220 is provided at the bottom of the body 200, and the floor brush 220 is provided with a roller brush for cleaning the bottom surface. A fan is provided inside the body 200, and the fan is used to exhaust air from the air inlet of the floor brush 220. The sewage tank 100 is arranged at the front of the body 200, and the clean water tank 210 is arranged at the rear of the body 200. The water inlet pipe 130 of the sewage tank 100 is connected to the air inlet of the floor brush 220. The clean water tank 210 provides clean water for the floor brush 220. When the floor brush 220 is idle, it is placed on the charging base for charging.

[0074] It should be noted that the fan is started by a switch provided on the handle, the air inlet of the floor brush 220 starts to draw air and absorb the garbage and sewage on the ground, and at the same time the floor brush 220 also sprays water on the ground and the roller brush, the roller brush rolls to clean the ground, the garbage and sewage enter the sewage tank 100 through the water inlet pipe 130 and realize gas-liquid separation in the sewage tank 100, and the air flows out from the return air port 121 of the sewage tank 100.

[0075] It should be noted that the connection method between the sewage tank 100 and the body 200 is not limited. In some embodiments, the body 200 and the sewage tank 100 are connected in a detachable manner such as a threaded connection or a slot connection. The position where the sewage tank 100 is installed on the body 200 is not limited. In some embodiments, the sewage tank 100 is installed on the front of the body 200, and the clean water tank 210 is correspondingly installed on the rear of the body 200, so that the overall product is more compact. In other embodiments, the sewage tank 100 is installed on the side or rear of the body 200, and the installation position of the clean water tank 210 is adaptively adjusted.

[0076] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A sewage tank, characterized in that: include: The box body is provided with a containing cavity; A box cover connected to the box body; A water inlet pipe, provided with a water outlet end, wherein the water outlet end is located in the accommodating cavity; a baffle, located in the accommodating cavity; Wherein, the sewage tank is provided with an air return port, and the water outlet is oriented in a direction away from the tank cover; the air return port and the water outlet are located on the same side of the baffle.

2. The sewage tank according to claim 1, characterized in that: The air return port is located on the box cover.

3. The sewage tank according to claim 1, characterized in that: The sewage tank has a first direction and a second direction perpendicular to each other, the air return port and the water outlet are arranged along the first direction, and the air return port and the water outlet are located on one side of the baffle in the second direction.

4. The sewage tank according to claim 1, characterized in that: The baffle includes a first water retaining section and a second water retaining section, the first water retaining section is located on a side of the second water retaining section close to the box cover, and the maximum distance L1 between the first water retaining section and the central axis of the water outlet end is smaller than the minimum distance L2 between the second water retaining section and the central axis of the water outlet end.

5. The sewage tank according to claim 1, characterized in that: The water outlet is provided with a guide portion, which is located on a side of the water outlet away from the baffle and protrudes from the water outlet along the direction of the water outlet. Along the direction of the water outlet, the area of ​​the guide portion in the cross section gradually decreases, and the cross section is perpendicular to the direction of the water outlet.

6. The sewage tank according to claim 5, characterized in that: The guide portion is provided with a guide surface, and along the direction of the water outlet end, the guide surface guides the water flow to flow along the inner wall surface of the water inlet pipe to the central axis of the water outlet end.

7. The sewage tank according to claim 1, characterized in that: The sewage tank further comprises an electrode sheet mounted on the tank cover, and along the arrangement direction of the water outlet and the baffle, the baffle covers the end of the electrode sheet connected to the tank cover.

8. The sewage tank according to claim 7, characterized in that: Along the direction of the water outlet, the electrode sheet and the water outlet protrude from the baffle, the sewage tank has a first direction and a second direction perpendicular to each other, the air return port and the water outlet are arranged along the first direction, the air return port and the water outlet are located on one side of the baffle in the second direction, and on the projection plane perpendicular to the second direction, the electrode sheet and the water outlet are staggered.

9. The sewage tank according to claim 1, characterized in that: The water inlet pipe and the baffle are installed on the box cover.

10. The sewage tank according to claim 9, characterized in that: The water inlet pipe is passed through the baffle plate, and the water inlet pipe is provided with a water inlet end, and the water inlet end is located at a side of the baffle plate away from the water outlet end.

11. The sewage tank according to claim 10, characterized in that: The sewage tank is provided with an air return channel located between the water inlet pipe and the tank cover, the air return channel has an air inlet end and an air outlet end, the air inlet end is located on one side of the baffle, at least part of the air outlet end is located on the other side of the baffle, and the air return port is located at the air inlet end.

12. The sewage tank according to claim 11, characterized in that: A notch is provided at one end of the baffle plate close to the box cover, and the sewage tank also includes a surrounding plate and a filter. The surrounding plate is arranged around the edge of the notch, a part of the structure of the surrounding plate is located on one side of the baffle plate, and another part of the structure of the surrounding plate is located on the other side of the baffle plate. The surrounding plate connects the water inlet pipe and the box cover to form the return air channel, the notch is located in the return air channel, and the filter is located at the air outlet end.

13. A cleaning appliance, characterized in that: A sewage tank comprising any one of claims 1 to 12.

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