Sewage tank and scrubber

Abstract

The application provides a sewage tank and a scrubber, and belongs to the technical field of scrubbers. The sewage tank comprises a tank body and a separation structure; the tank body is arranged on the scrubber, and the tank body has a solid cavity and a sewage cavity arranged in sequence along the length direction of the tank body; the separation structure comprises a first filter and a water-gas separation assembly; the first filter is located in the solid cavity, and the water-gas separation assembly is located in the sewage cavity; the first filter is configured to filter solid matters in a water-gas mixture entering the solid cavity; the water-gas separation assembly is configured to separate the filtered water-gas mixture into gas and water, and make the separated gas discharge from the sewage cavity and the separated water discharge into the sewage cavity. The sewage tank provided by the application stores the solid matters and water in the water-gas mixture in the solid cavity and the sewage cavity respectively, so that the separated gas can be discharged from the sewage cavity alone, thereby reducing the phenomenon that part of the water and solid particles are discharged from the sewage cavity together with the gas, and achieving a better water-gas-solid separation effect.

Description

Technical Field

[0001] This application relates to the field of floor scrubbing machine technology, and more particularly to a wastewater tank and a floor scrubbing machine. Background Technology

[0002] A floor scrubber is a cleaning device that integrates vacuuming, mopping, and wastewater recycling. It is mainly used for cleaning floors such as ceramic tiles, marble, and epoxy flooring.

[0003] In related technologies, floor scrubbers are equipped with a wastewater tank for collecting a mixture of water and air from the surface to be cleaned. The wastewater tank contains a wastewater chamber, into which the water and air mixture is drawn in by the negative pressure generated by the scrubber's fan. The water and air mixture stored in the wastewater chamber includes gas, water, and solids.

[0004] However, when the aforementioned sewage tank is in use, some water and solid particles may enter the blower along with the gas, affecting the blower's service life. Utility Model Content

[0005] This application provides a wastewater tank and a floor scrubbing machine to address the shortcomings of related technologies.

[0006] On one hand, this application provides a wastewater tank, including a tank body and a separation structure; the tank body is used to be installed on a floor scrubber, and the tank body has a solid cavity and a wastewater cavity arranged sequentially along the length of the tank body; the separation structure includes a first filter element and a water-air separation assembly, the first filter element is located in the solid cavity, and the water-air separation assembly is located in the wastewater cavity; the first filter element is configured to filter solids in the water-air mixture entering the solid cavity; the water-air separation assembly is configured to separate the filtered water-air mixture into gas and water, and discharge the separated gas into the wastewater cavity, and discharge the separated water into the wastewater cavity.

[0007] Thus, the first filter element filters the water-air mixture entering the solid chamber, and the solid matter filtered out of the water-air mixture is stored in the solid chamber; then the water-air separation component separates the filtered water-air mixture into gas and water, and the separated water is stored in the sewage chamber, so that the separated gas can be discharged from the sewage chamber separately, thereby reducing the phenomenon of some water and solid particles being discharged from the sewage chamber with the gas, and achieving a better water, gas and solid separation effect.

[0008] In one possible implementation, the sewage tank provided in this application further includes a first cover assembly, which is detachably mounted on the tank body, and the separated gas is discharged from the sewage chamber through the first cover assembly.

[0009] In this way, the first cover plate assembly provides a stable exhaust channel for the separated gas, preventing the separated gas from accumulating in the sewage chamber, which helps maintain the negative pressure balance of the floor scrubber's fan and improves work efficiency. By detachably mounting the first cover plate assembly on the housing, it is convenient for users to clean the exhaust channel regularly, extending the overall service life of the sewage tank.

[0010] In one possible implementation, the wastewater tank provided in this application further includes a one-way valve, which connects the solid chamber and the water-air separation component. The one-way valve opens under the action of the water-air mixture, so that the filtered water-air mixture flows to the water-air separation component.

[0011] In this way, by setting up a one-way valve, the filtered water-air mixture is guaranteed to flow unidirectionally from the solid chamber to the water-air separation component, reducing the impact on filtration efficiency or the spread of pollution caused by the water-air mixture flowing back into the solid chamber.

[0012] In one possible implementation, the wastewater tank provided in this application further includes a second filter element disposed on the first cover assembly, the second filter element filtering moisture in the air discharged from the wastewater chamber.

[0013] Thus, by further filtering the water mist or fine droplets carried in the gas discharged from the sewage chamber through the second filter element, it is possible to prevent incompletely separated water from entering the blower and extend the service life of the blower.

[0014] In one possible implementation, the wastewater tank provided in this application has an installation part inside the tank, and a first filter element and a water-air separation assembly are respectively connected to opposite sides of the installation part, and the first filter element and the water-air separation assembly are connected through the installation part.

[0015] In this way, the installation section provides a unified installation and positioning structure for the first filter element and the water-air separation assembly, ensuring that the assembly position of the two inside the tank is accurate and stable, reducing the impact of assembly deviation or loosening on the separation efficiency of the water-air mixture, and helping to improve the overall operational stability of the sewage tank.

[0016] In one possible implementation, the wastewater tank provided in this application has a second gas-liquid flow channel inside the first filter element, and the first filter element has a plurality of filter holes, the filter holes connecting the solid cavity and the second gas-liquid flow channel, and the second gas-liquid flow channel connecting the mounting part.

[0017] In this way, the first filter intercepts and retains the solids in the water-air mixture entering the solid chamber through the filter holes. Then, the filtered water-air mixture is guided in a concentrated manner through the second gas-liquid flow channel. This can prevent the water-air mixture that has not been fully filtered from directly entering the water-air separation component, thus ensuring the stability and efficiency of the separation process.

[0018] In one possible implementation, the wastewater tank provided in this application further includes a second cover assembly, which is detachably mounted on the tank body. The second cover assembly has an openable and closable first gas-liquid flow channel, which is configured to open under the action of a water-gas mixture to allow the water-gas mixture to enter the solid cavity.

[0019] Thus, the first gas-liquid flow channel opens only when a water-gas mixture flows into the solid chamber to establish a communication path with the solid chamber, ensuring that the water-gas mixture can be properly introduced into the solid chamber for filtration. By detachably mounting the second cover assembly on the housing, when it is necessary to clean the solid matter in the solid chamber later, the second cover assembly can be easily removed to pour out the solid matter, and then reinstalled on the housing, making it more convenient to use.

[0020] In one possible implementation, the wastewater tank provided in this application includes a first filter element comprising a filter section and a connecting section communicating with the filter section. The connecting section is connected to the mounting section. Filter holes are located on the filter section. The first gas-liquid flow channel and the filter section are arranged sequentially at intervals along the width direction of the tank body. The filter holes are adjacent to the second cover plate assembly.

[0021] Thus, by setting the first gas-liquid flow channel and the filter section to be arranged sequentially and at intervals along the width of the tank, the internal space of the tank can be fully utilized, the components can be arranged reasonably, structural crowding can be avoided, and the overall compactness of the sewage tank can be improved. By setting the filter hole adjacent to the second cover plate assembly, it is beneficial to ensure that the water-gas mixture entering the solid cavity is fully filtered before entering the second gas-liquid flow channel, thereby improving the separation effect of solids in the water-gas mixture.

[0022] In one possible implementation, the wastewater tank provided in this application has a filter section projected toward the connecting section within the connecting section; the filter section is a filter bucket, with the opening of the filter bucket connected to the connecting section; or, the filter section is a filter sleeve, with both ends of the filter sleeve connected to the second cover plate assembly and the connecting section, respectively.

[0023] Thus, by positioning the projection of the filter section towards the connecting section within the connecting section, the flow path of the filtered water-air mixture within the second gas-liquid flow channel is smoother and gentler, reducing turbulence. By designing the filter section as a filter barrel, simply connecting the barrel's opening to the connecting section simplifies the filtration process. Furthermore, the filter barrel has good manufacturability, making it suitable for mass production. By designing the filter section as a filter sleeve, connecting both ends of the filter sleeve to the second cover plate assembly and the connecting section respectively, a bidirectional force-bearing structure is formed, which helps improve the filter sleeve's resistance to deformation and its service life within the housing.

[0024] In one possible implementation, the wastewater tank provided in this application includes a water-air separation assembly comprising a support located in the wastewater chamber; a turbulence member disposed within the support, the turbulence member being configured to guide the water-air mixture around the turbulence member and along one end of the turbulence member toward the other end, so as to separate the mixture into air and water at the other end of the turbulence member, and to allow the separated air to exit the tank body, while the separated water flows into the wastewater chamber.

[0025] In this way, by setting up the baffle, the water-air mixture entering from one end of the baffle is guided to flow around the baffle, and the water-air mixture is separated into air and water at the other end of the baffle. The separated air flows out of the box and the separated water flows into the sewage chamber. Thus, water-air separation can be achieved without relying on the high-speed rotation of the baffle, reducing the requirements for high-precision processing technology. The structure is simple and the cost is low.

[0026] In one possible implementation, the sewage tank provided in this application has a support portion on the support member, and the support portion is detachably connected to the first cover plate assembly.

[0027] Thus, when it is necessary to clean the water collected in the sewage chamber, the first cover assembly and the water-air separation assembly are disassembled, and the first cover assembly is removed from the box, so that the water in the sewage chamber can be poured out, which is quite convenient.

[0028] In one possible implementation, the sewage tank provided in this application includes a turbulence-inducing component comprising a body portion and at least one spiral portion wound around the body portion. Both the body portion and the spiral portion are placed inside a support member, and the spiral portion extends along the axial direction of the body portion. A spiral channel for supplying a water-air mixture to flow around the body portion is formed between the spiral portion and the inner wall of the support member.

[0029] Thus, the spiral channel constructed between the spiral part and the inner wall of the support extends the flow path of the water-air mixture, increases the separation time, and forms a rotating flow pattern as the water-air mixture flows around the main body from one end to the other. Centrifugal force is used to cause the water to migrate into the sewage chamber and separate from the airflow.

[0030] In one possible implementation, the wastewater tank provided in this application includes a water-air separation assembly comprising a seal located between the solid cavity and the water-air separation assembly to seal the gap between the solid cavity and the water-air separation assembly.

[0031] In this way, a physical isolation layer is formed between the solid chamber and the water-air separation component by the sealing element, effectively sealing the gap between the two. This helps to reduce the leakage of the water-air mixture after filtering solids from the gap into the sewage chamber instead of properly entering the water-air separation component for water-air separation, thus ensuring the effectiveness of water-air separation.

[0032] In one possible implementation, the wastewater tank provided in this application includes a second cover assembly comprising a cover plate and a flow guide; the cover plate is detachably connected to the tank body; the flow guide is disposed on the cover plate and located within the solid cavity; a first gas-liquid flow channel is located on the flow guide, and one end of the first gas-liquid flow channel is connected to an inlet on the cover plate.

[0033] In this way, the cover plate, the guide plate and the first gas-liquid flow channel are integrated into the design, eliminating the need for additional guide pipes or supports, thus simplifying the structure of the sewage tank.

[0034] In one possible implementation, the wastewater tank provided in this application, the second cover assembly further includes a shielding member, the shielding member being hinged to the flow guide member, the shielding member being configured to open the first gas-liquid flow channel under the action of the water-air mixture, or to rebound toward the flow guide member to close the first gas-liquid flow channel when the floor scrubber stops.

[0035] Thus, by hinged connecting the shielding component and the flow guide component, the hinged structure is easy to process and manufacture, and has high mechanical stability, which can meet the application scenarios that require frequent opening and closing of the first gas-liquid flow channel.

[0036] In one possible implementation, the sewage tank provided in this application has an elastic shielding element.

[0037] In this way, the elastic element responds more quickly and sensitively to pressure changes in the water-air mixture, making the opening and closing of the first gas-liquid flow channel smoother and ensuring the real-time performance and stability of the water-air mixture entering the solid cavity.

[0038] In one possible implementation, the wastewater tank provided in this application has a sealing surface formed on the surface of the shielding member facing the flow guide member, and the sealing surface matches the end face of the flow guide member away from the cover plate member to seal the gap between the shielding member and the flow guide member.

[0039] In this way, by making the sealing surface and the end face of the guide piece away from the cover plate piece in close contact to seal the gap between them, the phenomenon of water and air mixture entering the solid cavity flowing back due to the disappearance of the negative pressure provided by the fan can be reduced, and the backflow of sewage into the clean area can be reduced; at the same time, it can also reduce the entry of external air into the box, maintain the negative pressure balance of the fan system, and ensure stable suction.

[0040] In one possible implementation, the wastewater tank provided in this application has a sloped end face of the guide member away from the cover plate member, and the sloped end face has an angle with the extension direction of the first gas-liquid flow channel.

[0041] Thus, after the water-air mixture is discharged through the first gas-liquid flow channel with its inclined guide structure, the flow direction of the water-air mixture becomes more concentrated and orderly, facilitating the first filter element to filter the solids in the water-air mixture. Furthermore, the inclined structure helps reduce the impact of the water-air mixture on the vertical cavity wall of the solid chamber, thereby reducing noise and vibration and improving the user experience.

[0042] In one possible implementation, the sewage tank provided in this application has an included angle greater than or equal to 20º and less than or equal to 70º.

[0043] In this way, when the water-air mixture flows into the solid cavity from the first gas-liquid flow channel, the water-air mixture can be oriented along the inclined plane to avoid directly impacting the vertical cavity wall of the solid cavity or generating turbulence; at the same time, it can ensure that the shielding part opens quickly under pressure and stably fits the sealing surface when rebounding, thus achieving good control over the opening and closing of the first gas-liquid flow channel.

[0044] In one possible implementation, the wastewater tank provided in this application has a shield and a flow guide hinged on the side opposite to the first filter, and the projection of the hinge point between the shield and the flow guide is located in the first gas-liquid flow channel.

[0045] This facilitates the coordinated layout between the shielding element and the first filter element, reducing the impact on the normal opening of the first gas-liquid flow channel caused by structural interference between the shielding element and the first filter element; at the same time, it can reduce the interference caused by the shielding element on the flow process of the water-air mixture to the filter element.

[0046] In one possible implementation, the wastewater tank provided in this application includes a one-way valve comprising a valve seat and a valve core disposed on the valve seat; the valve seat is connected to a water-air separation assembly, such that the valve core is disposed opposite to the water-air separation assembly; the valve core is configured to open under the action of a water-air mixture, so that the filtered water-air mixture flows to the water-air separation assembly; or to close when the floor scrubber stops to separate the solids chamber and the wastewater chamber.

[0047] Thus, by connecting the valve seat to the water-air separation component, a stable position is provided for the valve core, ensuring that the valve core can open under the action of the water-air mixture, allowing the filtered water-air mixture to flow smoothly to the water-air separation component; or when the floor scrubber stops, it can be closed to separate the solid chamber and the wastewater chamber, preventing liquid backflow or gas leakage.

[0048] In one possible implementation, the sewage tank provided in this application includes a first connector and a second connector arranged in sequence; the first connector is detachably connected to the tank body, and the second filter is detachably connected to the second connector; both the first connector and the second connector are provided with a clearance opening for avoiding the separated gas discharge sewage chamber, and the second filter is located at the clearance opening.

[0049] Thus, the separated gas can be smoothly discharged from the sewage chamber through the clearance openings on the first and second connectors, and the moisture in the gas can be filtered through the second filter element; at the same time, it is convenient to disassemble the first cover plate assembly from the box body and to install and replace the second filter element, making the structural design of the first cover plate assembly more reasonable.

[0050] On the other hand, this application provides a floor scrubbing machine, including a floor scrubbing machine body and a wastewater tank as described above, which is disposed on the floor scrubbing machine body.

[0051] Thus, in a floor scrubbing machine equipped with any of the aforementioned wastewater tanks, the wastewater tank uses a first filter to filter the water-air mixture entering the solid chamber, and stores the filtered solids in the water-air mixture through the solid chamber; then, a water-air separation component separates the filtered water-air mixture into gas and water, and stores the separated water through the wastewater chamber, so that the separated gas can flow to the blower of the floor scrubbing machine when it is discharged separately from the wastewater chamber, thereby reducing the phenomenon that some water and solid particles flow to the blower along with the gas, and reducing the impact on the life of the blower.

[0052] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that the sewage tank provided by this application can solve, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0053] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0054] Figure 1 This is a schematic diagram of the structure of the floor scrubber provided in the embodiments of this application;

[0055] Figure 2 for Figure 1 A schematic diagram of the sewage tank in the middle;

[0056] Figure 3 for Figure 2 Exploded view of the sewage tank structure in the image;

[0057] Figure 4 for Figure 2 Internal structure diagram of the sewage tank Figure 1 ;

[0058] Figure 5 for Figure 2 Internal structure diagram of the sewage tank Figure 2 ;

[0059] Figure 6 for Figure 4 Use of water-air mixtures entering the wastewater tank Figure 1 ;

[0060] Figure 7 for Figure 4 Use of the wastewater tank when the floor scrubber is stopped Figure 2 ;

[0061] Figure 8 for Figure 3 A schematic diagram of the one-way valve in the diagram;

[0062] Figure 9 for Figure 3 The connection diagram of the water-air separation component and the second cover plate component.

[0063] Explanation of reference numerals in the attached figures:

[0064] 100. Sewage tank;

[0065] 110. Container body; 111. Mounting section; 1111. First mounting section; 1112. Second mounting section; 1113. First connecting port; 1114. Second connecting port; 112. Solid cavity; 113. Wastewater cavity; 114. First mounting port; 115. Second mounting port;

[0066] 120. Separation structure; 121. First filter element; 1211. Connecting part; 1212. Filter part; 1213. Filter hole; 1214. Second gas-liquid flow channel; 122. Water-gas separation assembly; 1221. Support element; 1222. Baffle element; 101. Body part; 102. Spiral part; 1223. Water flow channel; 1224. Sealing element; 1225. Airflow channel; 1226. Support part;

[0067] 130. Second cover plate assembly; 131. Cover plate component; 132. Flow guide component; 1321. First gas-liquid flow channel; 133. Shielding component; 1331. Sealing surface;

[0068] 140. First cover plate assembly; 141. First connector; 142. Second connector; 143. Clearance opening; 144. Locking structure;

[0069] 150. Check valve; 151. Valve seat; 152. Valve core;

[0070] 160. Second filter element;

[0071] 200. Floor scrubber; 210. Floor scrubber body; 211. Handle assembly; 212. Main unit assembly; 213. Body assembly; 214. Floor brush assembly. Detailed Implementation

[0072] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0073] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0074] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0075] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0076] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0077] A floor scrubber is a cleaning device that integrates vacuuming, mopping, and wastewater recycling. It is mainly used for cleaning floors such as ceramic tiles, marble, and epoxy flooring.

[0078] In related technologies, floor scrubbers are equipped with a wastewater tank for collecting a mixture of water and air from the surface to be cleaned. The wastewater tank contains a wastewater chamber, into which the water and air mixture is drawn in by the negative pressure generated by the scrubber's fan. The water and air mixture stored in the wastewater chamber includes gas, water, and solids.

[0079] However, when the aforementioned sewage tank is in use, some water and solid particles may enter the blower along with the gas, affecting the blower's service life.

[0080] In view of this, embodiments of this application provide a wastewater tank and a floor scrubbing machine. The wastewater tank comprises a tank body and a separation structure. The tank body is mounted on the floor scrubbing machine and has a solid chamber and a wastewater chamber arranged sequentially along the length of the tank body. The separation structure includes a first filter element and a water-air separation assembly. The first filter element is located in the solid chamber, and the water-air separation assembly is located in the wastewater chamber. The first filter element is configured to filter solids in the water-air mixture entering the solid chamber. The water-air separation assembly is configured to separate the filtered water-air mixture into gas and water, and discharge the separated gas into the wastewater chamber, while the separated water is discharged into the wastewater chamber. This configuration utilizes the first filter element to filter the water-air mixture entering the solid chamber and stores the filtered solids in the solid chamber. Then, the water-air separation assembly separates the filtered water-air mixture into gas and water, and stores the separated water in the wastewater chamber. This allows the separated gas to be discharged separately from the wastewater chamber, thereby reducing the phenomenon of some water and solid particles being discharged from the wastewater chamber along with the gas, achieving a better separation effect of water, gas, and solids.

[0081] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0082] First, refer to Figures 1 to 3 As shown, this application embodiment provides a floor scrubbing machine 200, including a floor scrubbing machine body 210 and a wastewater tank 100 disposed on the floor scrubbing machine body 210.

[0083] For example, the floor scrubber body 210 includes a handle assembly 211, a main unit assembly 212, a body assembly 213, and a floor brush assembly 214. The handle assembly 211 is connected to one end of the body assembly 213, and the floor brush assembly 214 is connected to the other end of the body assembly 213. The main unit assembly 212 and the wastewater tank 100 are arranged on one side of the body assembly 213 along the extending direction of the body assembly 213, and the main unit assembly 212 is located above the water tank assembly and connected to the water tank assembly.

[0084] The handle assembly 211 is used for users to hold and provide operation control functions; the main unit assembly 212 is used to provide the power and control functions required for the operation of the whole machine, and the main unit assembly 212 includes a fan (not shown in the figure); the body assembly 213 is a support and connection platform for the overall structure of the floor scrubber 200; and the floor brush assembly 214 is responsible for completing the tasks of floor cleaning and wastewater recycling.

[0085] This layout makes the overall structure of the floor scrubber 200 more slender and streamlined. The body component 213 serves as the overall support, connecting the handle component 211 and the floor brush component 214, making it easier and more effortless for users to operate it upright.

[0086] The main unit 212 and the wastewater tank 100 are distributed vertically along the extension direction of the body assembly 213 on one side of the body assembly 213, reducing the overall space occupied by the cleaning equipment, making the structure more compact and easier for users to hold and operate. Furthermore, the wastewater tank 100 is close to the floor brush assembly 214, shortening the water delivery path and improving the working efficiency of the cleaning equipment.

[0087] The specific structure of the sewage tank 100 will be described below.

[0088] Reference Figures 3 to 5 As shown, the wastewater tank 100 provided in this embodiment includes a tank body 110 and a separation structure 120. The tank body 110 is used to be installed on the floor scrubber 200. The tank body 110 has a solid cavity 112 and a wastewater cavity 113 arranged sequentially along the length of the tank body 110. The separation structure 120 includes a first filter element 121 and a water-air separation component 122. The first filter element 121 is located in the solid cavity 112, and the water-air separation component 122 is located in the wastewater cavity 113. The first filter element 121 is configured to filter solids in the water-air mixture entering the solid cavity 112. The water-air separation component 122 is configured to separate the filtered water-air mixture into gas and water, and discharge the separated gas into the wastewater cavity 113, and discharge the separated water into the wastewater cavity 113.

[0089] The length direction of the box 110 is as follows: Figure 4 The X direction is shown in the diagram.

[0090] like Figure 1 As shown, it can be understood that the length direction of the box 110 is the opposite direction of gravity. When the box 110 is placed on the floor scrubber 200, the solid chamber 112 is located below the wastewater chamber 113, so that the water and air mixture on the surface to be cleaned flows upward into the solid chamber 112 first.

[0091] Specifically, the tank 110, as the main structure of the entire sewage tank 100, carries and accommodates the flow and separation process of the water-air mixture.

[0092] The solid chamber 112 serves as the initial separation area for the water-air mixture, collecting solid impurities from it. By separately setting up the solid chamber 112, it is possible to effectively prevent solids from entering the wastewater chamber 113 and causing blockages, while also facilitating centralized cleaning and reducing the difficulty of daily maintenance. Specifically, the first filter element 121 is located within the solid chamber 112 to intercept solid particles in the water-air mixture.

[0093] The wastewater chamber 113 serves as a secondary separation and wastewater collection area for the water-air mixture, storing the water after water-air separation. The wastewater chamber 113 provides working space for the water-air separation component 122. The solids chamber 112 (for storing solids) and the wastewater chamber 113 (for storing water) are isolated from each other through the structural design of the housing 110, the first filter element 121, and the water-air separation component 122. This prevents the separated solids and water from mixing, ensuring a good separation effect between the water and solids in the water-air mixture.

[0094] The water-air separator is used to separate the water-air mixture after filtering solids into water and gas. The separated water is discharged into the sewage chamber 113, and the separated gas is discharged from the sewage chamber 113, that is, discharged outside the box 110, and is drawn in by the fan above the box 110.

[0095] In summary, the wastewater tank 100 of this embodiment uses a first filter element 121 to filter the water-air mixture entering the solid chamber 112 and stores the filtered solids in the water-air mixture through the solid chamber 112; then, the water-air separation component 122 separates the filtered water-air mixture into gas and water, and stores the separated water through the wastewater chamber 113, so that the separated gas can be discharged separately from the wastewater chamber 113, thereby reducing the phenomenon of some water and solid particles being discharged from the wastewater chamber 113 along with the gas, and achieving a better water, gas and solid separation effect.

[0096] Reference Figure 3 and Figure 4 As shown, in some embodiments, the sewage tank 100 further includes a second cover assembly 130, which is detachably mounted on the tank body 110. The second cover assembly 130 is provided with an openable and closable first gas-liquid flow channel 1321, which is configured to open under the action of a water-gas mixture to allow the water-gas mixture to enter the solid cavity 112.

[0097] Thus, the first gas-liquid flow channel 1321 opens only when a water-gas mixture flows into the solid chamber 112 to establish a communication path with the solid chamber 112, ensuring that the water-gas mixture can be normally introduced into the solid chamber 112 for filtration. By detachably mounting the second cover assembly 130 on the housing 110, when it is necessary to clean the solid matter in the solid chamber 112 later, the second cover assembly 130 can be easily removed to pour out the solid matter, and then reinstalled on the housing 110, making it more convenient to use.

[0098] In specific implementation, such as Figure 3 As shown, the tank 110 has a first side and a second side along its length. The first side is located below the second side in the direction of gravity. A first mounting opening 114, matching the second cover assembly 130, is provided on the first side. The first mounting opening 114 communicates with the solids cavity 112, and the second cover assembly 130 is positioned at the first mounting opening 114. This reduces the space occupied by the second cover assembly 130, making the wastewater tank 100 more compact. Furthermore, when it is necessary to clean solids from the solids cavity 112, the second cover assembly 130 can be removed to expose the first mounting opening 114, allowing the solids to be poured out.

[0099] Reference Figure 3 and Figure 4 For example, the second cover plate assembly 130 includes a cover plate 131 and a flow guide 132; the cover plate 131 is detachably connected to the housing 110; the flow guide 132 is disposed on the cover plate 131 and is located in the solid cavity 112; a first gas-liquid flow channel 1321 is located on the flow guide 132, and one end of the first gas-liquid flow channel 1321 is connected to the inlet on the cover plate 131.

[0100] In this way, the cover plate 131, the guide 132 and the first gas-liquid flow channel 1321 are integrated into the design, eliminating the need for additional guide pipes or supports, thus simplifying the structure of the sewage tank 100.

[0101] The cover plate 131 can be connected to the box 110 by means of snaps, threads, etc., so that it can be easily disassembled by the user. This application embodiment does not limit this.

[0102] Furthermore, the guide member 132 can be a cylindrical shell structure, with the cavity inside the shell defining the first gas-liquid flow channel 1321, and the cover plate 131 has an inlet in the area where it connects to the cylindrical shell. In this way, the water-gas mixture enters the first gas-liquid flow channel 1321 through the inlet.

[0103] In practical applications, refer to Figures 3 to 7The second cover assembly 130 also includes a shield 133, which is hinged to the guide member 132. The shield 133 is configured to open the first gas-liquid flow channel 1321 under the action of the water-air mixture, or to rebound toward the guide member 132 to close the first gas-liquid flow channel 1321 when the floor scrubber 200 stops.

[0104] Thus, by hingedly connecting the shield 133 and the guide 132, the hinged structure is easy to manufacture and has high mechanical stability, which can meet the application scenarios that require frequent opening and closing of the first gas-liquid flow channel 1321.

[0105] The water-air mixture on the surface to be cleaned enters the first gas-liquid flow channel 1321 under the suction effect generated after the main unit 212 is started. The shielding member 133 can rotate under the thrust generated when the water-air mixture enters the first gas-liquid flow channel 1321. Figure 5 or Figure 6 The position shown opens the first gas-liquid flow channel 1321, allowing the water-air mixture to smoothly enter the solid chamber 112; when the floor scrubber 200 stops, the shield 133 rotates in the reverse direction to the position shown. Figure 7 The position shown indicates that the flow guide 132 rebounds, thereby closing the first gas-liquid flow channel 1321.

[0106] Overall, based on the opening form of the other end of the first gas-liquid flow channel 1321, the shielding member 133 can be adapted to be designed as a plate or other structure, which is relatively simple and convenient for production and processing.

[0107] For example, the shielding member 133 is an elastic member.

[0108] In this way, the elastic element responds more quickly and sensitively to pressure changes in the water-air mixture, making the opening and closing of the first gas-liquid flow channel 1321 smoother, and ensuring the real-time performance and stability of the water-air mixture entering the solid cavity 112.

[0109] The elastic element can be a rubber element or a silicone element, and this application embodiment does not limit this.

[0110] Reference Figure 7 In some embodiments, the shield 133 forms a sealing surface 1331 on the surface of the guide 132, and the sealing surface 1331 matches the end face of the guide 132 away from the cover plate 131 to seal the gap between the shield 133 and the guide 132.

[0111] In this way, by making the sealing surface 1331 and the end face of the guide member 132 facing away from the cover plate member 131 in close contact to seal the gap between them, the phenomenon of water and air mixture entering the solid cavity 112 flowing back due to the disappearance of the negative pressure provided by the fan can be reduced, and the backflow of sewage into the clean area can be reduced; at the same time, it can also reduce the entry of external air into the box 110, maintain the negative pressure balance of the fan system, and ensure stable suction.

[0112] In some examples, the end face of the guide member 132 facing away from the cover plate member 131 is a slope, and the slope has an angle with the extension direction of the first gas-liquid flow channel 1321.

[0113] Thus, after the water-air mixture is discharged through the first gas-liquid flow channel 1321 with the inclined guide structure, the flow direction of the water-air mixture is more concentrated and orderly, which facilitates the first filter element 121 to filter the solids in the water-air mixture. In addition, the inclined structure helps to reduce the impact of the water-air mixture on the vertical cavity wall of the solid cavity 112, thereby reducing noise and vibration and improving the user experience.

[0114] Among them, the end face of the guide member 132 facing away from the cover plate member 131 can be an annular surface, and the first gas-liquid flow channel 1321 is a cylindrical flow channel with the annular surface set at an inclination.

[0115] like Figure 4 As shown, the vertical cavity wall of the solid cavity 112, i.e. the mounting part 111, faces the side of the second cover plate assembly 130; the extension direction of the first gas-liquid flow channel 1321 is consistent with the length direction of the box body 110, and the angle between the inclined surface and the extension direction of the first gas-liquid flow channel 1321 is an acute angle.

[0116] In practice, the included angle is greater than or equal to 20º and less than or equal to 70º.

[0117] With this configuration, when the water-air mixture flows into the solid cavity 112 from the first gas-liquid flow channel 1321, the water-air mixture can be oriented along the inclined surface to avoid directly impacting the vertical cavity wall of the solid cavity 112 or generating turbulence; at the same time, it can ensure that the shielding member 133 opens quickly under pressure and stably fits the sealing surface 1331 when it rebounds, thus achieving good control over the opening and closing of the first gas-liquid flow channel 1321.

[0118] The included angle can be 20°, 40°, 55° or 70°.

[0119] Reference Figure 5 and Figure 6 In some embodiments, the shielding member 133 and the flow guide member 132 are hinged on the side opposite to the first filter member 121, and the projection of the hinge point between the shielding member 133 and the flow guide member 132 is located in the first gas-liquid flow channel 1321.

[0120] This facilitates the coordinated layout between the shielding member 133 and the first filter element 121, reducing the impact on the normal opening of the first gas-liquid flow channel 1321 caused by the structural interference between the opening of the shielding member 133 and the first filter element 121; at the same time, it can reduce the interference caused by the shielding member 133 on the flow process of the water-air mixture to the filter element.

[0121] The first gas-liquid flow channel 1321 on the guide member 132 and the filter section 1212 of the first filter member 121 are arranged sequentially at intervals along the width direction of the housing 110. The guide member 132 is located on the side opposite to the first filter member 121, that is, the one of the two sides of the guide member 132 along the width direction of the housing 110 that is opposite to the filter section 1212.

[0122] Here, the width direction of the box is 110. Figure 4 Y direction shown in .

[0123] Reference Figures 3 to 7 In some embodiments, the sewage tank 100 further includes a first cover assembly 140, which is detachably mounted on the tank body 110, and the separated gas is discharged from the sewage chamber 113 through the first cover assembly 140.

[0124] Thus, the first cover plate assembly 140 provides a stable discharge channel for the separated gas, preventing the separated gas from accumulating in the sewage chamber 113, which helps maintain the negative pressure balance of the blower of the floor scrubber 200 and improves work efficiency. By detachably mounting the first cover plate assembly 140 on the housing 110, it is convenient for users to clean the exhaust channel regularly, extending the overall service life of the sewage tank 100.

[0125] For example, by opening a second mounting opening 115 on the second side of the length direction of the tank 110 to match the first cover assembly 140, and setting the first cover assembly 140 at the second mounting opening 115, the space occupied by the first cover assembly 140 can be reduced, which is beneficial to making the structure of the sewage tank 100 more compact.

[0126] Among them, such as Figure 7 As shown, the first cover assembly 140 includes a first connector 141 and a second connector 142 arranged in sequence; the first connector 141 is detachably connected to the housing 110, and the second filter 160 is detachably connected to the second connector 142. Both the first connector 141 and the second connector 142 are provided with a clearance opening 143 for avoiding the separation of the gas discharge sewage chamber 113; the second filter 160 is located at the clearance opening 143.

[0127] Thus, the separated gas can be smoothly discharged from the sewage chamber 113 through the clearance opening 143 on the first connector 141 and the second connector 142, and the moisture in the gas can be filtered through the second filter element 160; at the same time, it is convenient to disassemble the first cover plate assembly 140 from the box 110 and to install and replace the second filter element 160, making the structural design of the first cover plate assembly 140 more reasonable.

[0128] For example, the first connector 141 and the housing 110 can be detachably connected by means of snap-fit ​​or threaded connection; the second filter element 160 and the second connector 142 can be detachably connected by means of snap-fit ​​or plug-in connection. This application embodiment does not limit this.

[0129] Reference Figures 4 to 8 In a specific example, the wastewater tank 100 also includes a one-way valve 150, which connects the solid chamber 112 and the water-air separation component 122. The one-way valve 150 opens under the action of the water-air mixture, so that the filtered water-air mixture flows to the water-air separation component 122.

[0130] Thus, by setting the one-way valve 150, the filtered water-air mixture is ensured to flow unidirectionally from the solid chamber 112 to the water-air separation component 122, reducing the impact on filtration efficiency or the spread of pollution caused by the water-air mixture flowing back into the solid chamber 112.

[0131] For example, the one-way valve 150 includes a valve seat 151 and a valve core 152 disposed on the valve seat 151; the valve seat 151 is connected to the water-air separation assembly 122, such that the valve core 152 is disposed opposite to the water-air separation assembly 122; the valve core 152 is configured to open under the action of the water-air mixture, so that the filtered water-air mixture flows to the water-air separation assembly 122; or to close when the floor scrubber 200 is stopped to separate the solids chamber 112 and the wastewater chamber 113.

[0132] Thus, the valve seat 151 is connected to the water-air separation component 122 to provide a stable position for the valve core 152, ensuring that the valve core 152 can be opened under the action of the water-air mixture, so that the filtered water-air mixture can flow smoothly to the water-air separation component 122; or when the floor scrubber 200 stops, it can be closed to separate the solid chamber 112 and the sewage chamber 113 to prevent liquid backflow or gas leakage.

[0133] The valve core 152 is used to open according to the pressure generated when the filtered water-air mixture flows, and automatically closes when the floor scrubber 200 stops and there is no water-air mixture flowing, thus blocking the passage of water and gas, making it convenient to use.

[0134] For example, the valve core 152 can be configured as a diaphragm valve core 152, a swing flap valve core 152, a piston sliding valve core 152 or a spring-loaded valve core 152, and the embodiments of this application do not limit this.

[0135] Reference Figure 4 and Figure 7 In some embodiments, the wastewater tank 100 further includes a second filter element 160 disposed on the first cover assembly 140, the second filter element 160 filtering moisture in the air discharged from the wastewater chamber 113.

[0136] Thus, by further filtering the water mist or fine droplets carried in the gas discharged from the sewage chamber 113 through the second filter element 160, it is possible to prevent incompletely separated water from entering the blower and extend the service life of the blower.

[0137] The specific type of the second filter element 160 is not limited in this application embodiment. For example, the second filter element 160 can be a porous foam material, filter cotton, or a sponge-like water-absorbing layer, etc., to ensure that it can filter the moisture in the air discharged from the sewage chamber 113.

[0138] Furthermore, the second filter element 160 can also be configured as a HEPA filter assembly. It is understood that the filter media of the HEPA filter assembly is made of ultra-fine glass fiber, synthetic fiber (such as polypropylene) or natural fiber. In addition to filtering out moisture in the air discharged from the sewage chamber 113, it can also effectively remove dust, bacteria and other pollutants in the air, thereby improving indoor air quality.

[0139] Reference Figure 4 In some examples, the housing 110 has a mounting section 111, and the first filter 121 and the water-air separation assembly 122 are respectively connected to the opposite sides of the mounting section 111, and the first filter 121 and the water-air separation assembly 122 are connected through the mounting section 111.

[0140] Thus, the installation section 111 provides a unified installation and positioning structure for the first filter element 121 and the water-air separation component 122, ensuring that the assembly position of the two inside the tank 110 is accurate and stable, reducing the impact of assembly deviation or loosening on the separation efficiency of the water-air mixture, and helping to improve the overall operational stability of the sewage tank 100.

[0141] In practice, the installation part 111 can be provided with a flow channel or connection interface so that the water-air mixture after preliminary filtration by the first filter element 121 can flow smoothly to the water-air separation component 122 for further water-air separation treatment.

[0142] like Figure 4As shown, the mounting part 111 includes a first mounting section 1111 and a second mounting section 1112. The first mounting section 1111 is connected to the inner peripheral side wall of the housing 110. The connecting part 1211 is connected to the first mounting section 1111. The first mounting section 1111 has a first communication port 1113 that communicates with the first filter element 121.

[0143] The second mounting section 1112 and the connecting part 1211 are located on both sides of the first mounting section 1111 along the length of the housing 110; the second mounting section 1112 is connected to the first mounting section 1111, and the second mounting section 1112 is provided with a second connecting port 1114 that communicates with the first connecting port 1113; the gas-liquid separation component is connected to the second mounting section 1112 and communicates with the second connecting port 1114.

[0144] The mounting part 111 and the housing 110 can be integrally formed.

[0145] Reference Figures 3 to 6 In some embodiments, the first filter element 121 has a second gas-liquid flow channel 1214, and the first filter element 121 has a plurality of filter holes 1213. The filter holes 1213 connect the solid cavity 112 and the second gas-liquid flow channel 1214, and the second gas-liquid flow channel 1214 connects to the mounting part 111.

[0146] In this way, the first filter element 121 intercepts and retains the solids in the water-air mixture entering the solid chamber 112 through the filter hole 1213, and then guides the filtered water-air mixture through the second gas-liquid flow channel 1214. This can prevent the water-air mixture that has not been fully filtered from directly entering the water-air separation component 122, thus ensuring the stability and efficiency of the separation process.

[0147] For example, when the wastewater tank 100 is applied to the floor scrubber 200, the size and number of the filter holes 1213 and the cross-sectional shape of the second air-liquid flow channel 1214 can be adjusted according to different floor scrubber 200 usage scenarios to adapt to different cleaning intensities and types of contaminants, thereby improving the versatility and applicability of the wastewater tank 100.

[0148] In a specific implementation, the first filter element 121 includes a filter section 1212 and a connecting section 1211 communicating with the filter section 1212. The connecting section 1211 is connected to the mounting section 111. The filter hole 1213 is located on the filter section 1212. The first gas-liquid flow channel 1321 and the filter section 1212 are arranged sequentially at intervals along the width direction of the housing 110. The filter hole 1213 is adjacent to the second cover plate assembly 130.

[0149] Among them, the width direction of the box body is 110. Figure 4 Y direction shown in .

[0150] Thus, by setting the first gas-liquid flow channel 1321 and the filter section 1212 to be arranged sequentially at intervals along the width direction of the tank 110, the internal space of the tank 110 can be fully utilized, the components can be reasonably arranged, structural crowding can be avoided, and the overall compactness of the sewage tank 100 can be improved. By setting the filter hole 1213 adjacent to the second cover plate assembly 130, it is beneficial to ensure that the water-air mixture entering the solid cavity 112 is fully filtered before entering the second gas-liquid flow channel 1214, thereby improving the separation effect of solids in the water-air mixture.

[0151] The connecting part 1211 and the filter part 1212 can be welded together or formed as a single piece. The connecting part 1211 and the mounting part 111 can be connected by snap-fit ​​or plug-in methods, which helps to improve assembly efficiency. In addition, a sealing structure can be provided between the connecting part 1211 and the mounting part 111 to prevent water and air leakage and ensure the sealing performance of the second gas-liquid flow channel 1214.

[0152] Furthermore, the projection of the filter section 1212 toward the connecting section 1211 is located inside the connecting section 1211; the filter section 1212 is a filter barrel, and the opening of the filter barrel is connected to the connecting section 1211; or, the filter section 1212 is a filter sleeve, and the two ends of the filter sleeve are respectively connected to the second cover plate assembly 130 and the connecting section 1211.

[0153] Thus, by positioning the projection of the filter section 1212 toward the connecting section 1211 within the connecting section 1211, the flow path of the filtered water-air mixture within the second gas-liquid flow channel 1214 becomes smoother and gentler, reducing turbulence. By designing the filter section 1212 as a filter barrel, connecting the barrel opening to the connecting section 1211 simplifies the assembly process. Furthermore, the filter barrel has good manufacturability, making it suitable for mass production. By designing the filter section 1212 as a filter sleeve, connecting both ends of the filter sleeve to the second cover plate assembly 130 and the connecting section 1211 respectively, a bidirectional force-bearing structure is formed, which helps improve the filter sleeve's resistance to deformation and its service life within the housing 110.

[0154] in, Figure 4 The connection structure of the filter section 1212 as a filter barrel is shown. Figure 5 The connection structure of the filter section 1212 as a filter sleeve is shown.

[0155] Reference Figure 4 and Figure 7In some examples, the water-air separation assembly 122 includes a support 1221 and a baffle 1222; the support 1221 is located in the wastewater chamber 113; the baffle 1222 is disposed within the support 1221 and is configured to guide the water-air mixture around the baffle 1222 and along one end of the baffle 1222 toward the other end, so as to separate the mixture into air and water at the other end of the baffle 1222, and to allow the separated air to exit the housing 110 and the separated water to flow into the wastewater chamber 113.

[0156] Thus, by setting the baffle 1222, the water-air mixture entering from one end of the baffle 1222 is guided to flow around the baffle 1222, and the water-air mixture is separated into air and water at the other end of the baffle 1222. The separated air flows out of the box 110, and the separated water flows into the sewage chamber 113. Therefore, water-air separation can be achieved without relying on the high-speed rotation of the baffle 1222, which reduces the requirements for high-precision processing technology. The structure is simple and the cost is low.

[0157] Among them, such as Figures 5 to 7 As shown, the support member 1221 is constructed with a water flow channel 1223 and an air flow channel 1225. The water flow channel 1223 is connected to the sewage chamber 113, and the air flow channel 1225 is connected to the first connector 141 and the second connector 142 via a clearance opening 143. In this way, the water and air mixture separated at the other end of the turbulence member 1222, the water flows into the sewage chamber 113 through the water flow channel 1223, and the separated air flows out of the housing 110 through the clearance opening 143 via the air flow channel 1225.

[0158] Reference Figure 7 and Figure 9 In a specific implementation, the support member 1221 has a support part 1226, which is detachably connected to the first cover plate assembly 140.

[0159] Thus, when it is necessary to clean the water collected in the sewage chamber 113, the first cover assembly 140 and the water-air separation assembly 122 are disassembled, and the first cover assembly 140 is removed from the housing 110, so that the water in the sewage chamber 113 can be poured out, which is more convenient to use.

[0160] For example, the support portion 1226 and the first cover plate assembly 140 are connected by means of... Figure 7 The locking structure 144 shown enables disassembly and assembly.

[0161] Continue to refer to Figure 7In a specific example, the turbulence-disrupting element 1222 includes a body portion 101 and at least one spiral portion 102 wound around the body portion 101. Both the body portion 101 and the spiral portion 102 are placed inside the support member 1221. The spiral portion 102 extends along the axial direction of the body portion 101. A spiral channel for supplying a water-air mixture to flow around the body portion 101 is formed between the spiral portion 102 and the inner wall of the support member 1221.

[0162] Thus, the spiral channel constructed between the spiral part 102 and the inner wall of the support member 1221 is used to extend the flow path of the water-air mixture, increase the separation time, and make the water-air mixture flow around the body part 101 from one end of the body part 101 to the other end, forming a rotating flow pattern, and using centrifugal force to make the water migrate to the sewage chamber 113 and get out of the airflow.

[0163] The main body 101 serves as the basic structure of the flow-disrupting component 1222, providing support points and connection points for the spiral part 102. The pitch of the spiral part 102 can be designed according to parameters such as the flow rate and velocity of the water-air mixture entering from one end of the main body 101, and this embodiment does not impose any limitations on this.

[0164] In practice, the main body 101 and the spiral part 102 can be formed by injection molding, 3D printing, or other methods. This results in a relatively mature molding process that can meet the needs of mass production.

[0165] Reference Figure 4 and Figure 9 In some embodiments, the water-air separation assembly 122 includes a seal 1224 located between the solid cavity 112 and the water-air separation assembly 122 to seal the gap between the solid cavity 112 and the water-air separation assembly 122.

[0166] Thus, a physical isolation layer is formed between the solid chamber 112 and the water-air separation component 122 by the sealing element 1224, effectively sealing the gap between the two. This helps to reduce the leakage of the water-air mixture after filtering solids from the gap into the sewage chamber 113 because it does not properly enter the water-air separation component 122 for water-air separation, thus ensuring the effect of water-air separation.

[0167] As mentioned earlier, the one-way valve 150 is used to connect the solid chamber 112 and the water-gas separation assembly 122. The valve seat 151 of the one-way valve 150 is connected to the water-gas separation assembly 122. In specific implementation, it is combined with... Figure 4As shown, the second mounting section 1112 of the mounting part 111 is provided with a mounting groove that matches the valve seat 151. The valve seat 151 is placed on the mounting groove, so that the valve core 152 is located at the second communication port 1114. The second mounting section 1112 is connected to the support member 1221 of the water-air separation component 122 through the valve seat 151. The valve core 152 is opposite to the baffle member 1222 of the water-air separation component 122.

[0168] Specifically, by placing a seal 1224 between the valve seat 151 and the support 1221, the seal 1224 seals the gap between the valve seat 151 and the support 1221. Thus, when the valve core 152 is opened to connect the solid chamber 112 and the water-air separation assembly 122, because the seal 1224 seals the gap between the valve seat 151 and the support 1221, the water-air mixture after filtering solids flows directly from the solid chamber 112 through the valve core 152 and then flows around the baffle 1222.

[0169] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A sewage tank (100), characterized in that, include: A housing (110) is used to be installed on a floor scrubber (200). The housing (110) has a solid cavity (112) and a sewage cavity (113) arranged sequentially along the length of the housing (110). The separation structure (120) includes a first filter element (121) and a water-air separation component (122), wherein the first filter element (121) is located in the solid chamber (112) and the water-air separation component (122) is located in the sewage chamber (113). The first filter element (121) is configured to filter solids in the water-air mixture entering the solid chamber (112); the water-air separation assembly (122) is configured to separate the filtered water-air mixture into gas and water, and discharge the separated gas out of the sewage chamber (113) and discharge the separated water into the sewage chamber (113).

2. The sewage tank (100) according to claim 1, characterized in that, It also includes a first cover plate assembly (140), which is detachably mounted on the housing (110), and the separated gas is discharged from the sewage chamber (113) through the first cover plate assembly (140).

3. The sewage tank (100) according to claim 1, characterized in that, It also includes a one-way valve (150) that connects the solid chamber (112) and the water-air separation assembly (122). The one-way valve (150) opens under the action of the water-air mixture to allow the filtered water-air mixture to flow to the water-air separation assembly (122).

4. The sewage tank (100) according to claim 2, characterized in that, It also includes a second filter element (160) disposed on the first cover assembly (140), the second filter element (160) filtering moisture in the air discharged from the sewage chamber (113).

5. The sewage tank (100) according to claim 1, characterized in that, The housing (110) has an installation part (111), the first filter element (121) and the water-air separation component (122) are respectively connected to the two sides opposite to the installation part (111), and the first filter element (121) and the water-air separation component (122) are connected through the installation part (111).

6. The sewage tank (100) according to claim 5, characterized in that, The first filter element (121) has a second gas-liquid flow channel (1214) inside, and the first filter element (121) has a plurality of filter holes (1213). The filter holes (1213) connect the solid cavity (112) and the second gas-liquid flow channel (1214). The second gas-liquid flow channel (1214) connects to the mounting part (111).

7. The sewage tank (100) according to claim 5, characterized in that, It also includes a second cover plate assembly (130), which is detachably mounted on the housing (110). The second cover plate assembly (130) is provided with an openable and closable first gas-liquid flow channel (1321), which is configured to open under the action of the water-gas mixture so that the water-gas mixture enters the solid cavity (112).

8. The sewage tank (100) according to claim 7, characterized in that, The first filter element (121) includes a filter section (1212) and a connecting section (1211) communicating with the filter section (1212). The connecting section (1211) is connected to the mounting section (111). The filter hole (1213) is located on the filter section (1212). The first gas-liquid flow channel (1321) and the filter section (1212) are arranged at intervals along the width direction of the housing (110). The filter hole (1213) is adjacent to the second cover plate assembly (130).

9. The sewage tank (100) according to claim 8, characterized in that, The projection of the filter section (1212) toward the connecting section (1211) is located within the connecting section (1211); The filter section (1212) is a filter barrel, and the opening of the filter barrel is connected to the connecting part (1211); or, the filter section (1212) is a filter sleeve, and the two ends of the filter sleeve are respectively connected to the second cover plate assembly (130) and the connecting part (1211).

10. The sewage tank (100) according to claim 2, characterized in that, The water-air separation component (122) includes: Support member (1221), the support member (1221) is located in the sewage chamber (113); A baffle (1222) is disposed within the support (1221). The baffle (1222) is configured to guide the water-air mixture around the baffle (1222) and along one end of the baffle (1222) toward the other end, so as to separate the mixture into air and water at the other end of the baffle (1222), and to allow the separated air to exit the housing (110), while the separated water flows into the sewage chamber (113).

11. The sewage tank (100) according to claim 10, characterized in that, The support member (1221) has a support portion (1226) which is detachably connected to the first cover plate assembly (140).

12. The sewage tank (100) according to claim 10, characterized in that, The spoiler (1222) includes a body part (101) and at least one spiral part (102) wound around the body part (101). The body part (101) and the spiral part (102) are both placed inside the support (1221). The spiral part (102) extends along the axial direction of the body part (101). A spiral channel is formed between the spiral portion (102) and the inner wall of the support member (1221) for the water-air mixture to flow around the body portion (101).

13. The sewage tank (100) according to any one of claims 1 to 12, characterized in that, The water-gas separation assembly (122) includes a seal (1224) located between the solid cavity (112) and the water-gas separation assembly (122) to seal the gap between the solid cavity (112) and the water-gas separation assembly (122).

14. The sewage tank (100) according to claim 7, characterized in that, The second cover plate assembly (130) includes: A cover plate (131) is detachably connected to the housing (110); A flow guide (132) is disposed on the cover plate (131) and located inside the solid cavity (112). The first gas-liquid flow channel (1321) is located on the flow guide (132) and one end of the first gas-liquid flow channel (1321) is connected to the inlet on the cover plate (131).

15. The sewage tank (100) according to claim 14, characterized in that, The second cover assembly (130) further includes a shield (133) hinged to the guide (132), the shield (133) being configured to open the first gas-liquid channel (1321) under the action of the water-air mixture, or to rebound toward the guide (132) to close the first gas-liquid channel (1321) when the floor scrubber (200) stops.

16. The sewage tank (100) according to claim 15, characterized in that, The shielding element (133) is an elastic element.

17. The sewage tank (100) according to claim 16, characterized in that, The shield (133) forms a sealing surface (1331) on the surface facing the guide (132), and the sealing surface (1331) matches the end face of the guide (132) away from the cover plate (131) to seal the gap between the shield (133) and the guide (132).

18. The sewage tank (100) according to any one of claims 14 to 17, characterized in that, The end face of the guide member (132) facing away from the cover plate member (131) is an inclined surface, and the inclined surface has an angle with the extension direction of the first gas-liquid flow channel (1321).

19. The sewage tank (100) according to claim 18, characterized in that, The included angle is greater than or equal to 20º and less than or equal to 70º.

20. The sewage tank (100) according to claim 15, characterized in that, The shielding member (133) is hinged to the flow guide member (132) on the side opposite to the first filter member (121), and the projection of the hinge point between the shielding member (133) and the flow guide member (132) is located in the first gas-liquid flow channel (1321).

21. The sewage tank (100) according to claim 3, characterized in that, The one-way valve (150) includes a valve seat (151) and a valve core (152) disposed on the valve seat (151). The valve seat (151) is connected to the water-air separation assembly (122), such that the valve core (152) is disposed opposite to the water-air separation assembly (122); the valve core (152) is configured to open under the action of the water-air mixture, so that the filtered water-air mixture flows to the water-air separation assembly (122); or to close when the floor scrubber (200) stops, so as to separate the solid chamber (112) and the wastewater chamber (113).

22. The sewage tank (100) according to claim 4, characterized in that, The first cover plate assembly (140) includes a first connector (141) and a second connector (142) arranged sequentially. The first connector (141) is detachably connected to the housing (110), and the second filter (160) is detachably connected to the second connector (142). Both the first connector (141) and the second connector (142) are provided with a clearance port (143) for avoiding the separation of the gas discharged from the sewage chamber (113). The second filter (160) is located at the clearance port (143).

23. A floor scrubbing machine (200), characterized in that, It includes a floor scrubber body (210) and a wastewater tank (100) as described in any one of claims 1 to 22 disposed on the floor scrubber body (210).

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