Soluble liquid tank and scrubber

Abstract

The utility model discloses a soiling solution tank and scrubber, the soiling solution tank is used for the scrubber and comprises a water tank shell, a dirt suction pipe fitting and an anti-backflow piece, the water tank shell is provided with a containing cavity used for collecting soiling solution, an airflow outlet is formed in the top of the water tank shell, at least part of the dirt suction pipe fitting is located in the containing cavity, the dirt suction pipe fitting is provided with a dirt suction port and a dirt outlet, and the anti-backflow piece is connected with the dirt suction port. The sewage outlet is located in the containing cavity and located below the airflow outlet, the containing cavity communicates with the sewage outlet and the airflow outlet, and the backflow preventing piece is located in the containing cavity and used for opening and closing the sewage outlet. According to the dirty liquid box, the backflow preventing piece used for opening and closing the dirty outlet is arranged, so that when the floor washing machine stops working, for example, the floor washing machine inclines, and particularly the floor washing machine lies flat, the backflow preventing piece can close the dirty outlet; therefore, dirty liquid is effectively prevented from flowing back into the floor brush from the dirt outlet through the dirt suction pipe fitting to pollute the floor brush and even the ground.

Description

Technical Field

[0001] The utility model relates to the field of cleaning electrical appliances, in particular to a waste liquid tank and a floor scrubber. Background Art

[0002] In the related art, when a floor scrubber is in use, the floor is cleaned by a floor brush. At the same time, the dirty liquid on the floor is sucked into the dirty liquid tank of the floor scrubber through the floor brush and the dirt suction pipe under the action of the power component. The air flow containing dirty liquid flowing out of the dirt outlet of the dirt suction pipe enters the dirty liquid tank for gas-liquid separation. The separated liquid is stored in the dirty liquid tank, and the gas is discharged into the external environment after passing through the power component.

[0003] However, when the floor scrubber is not in operation, the dirty liquid in the dirty liquid tank may flow back through the outlet of the suction pipe into the floor brush, thereby contaminating the floor brush and even the floor. For example, when the floor scrubber is tilted, especially when the floor scrubber is lying flat, the dirty liquid in the dirty liquid tank is more likely to flow back into the floor brush. Therefore, a solution is needed. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a waste liquid tank that is provided with a backflow prevention member for opening and closing the waste outlet. When the floor scrubber is stopped, for example, when the floor scrubber is tilted, and particularly when the floor scrubber is lying flat, the backflow prevention member can close the waste outlet, thereby effectively preventing waste liquid from flowing back from the waste outlet through the waste suction pipe into the floor brush, thereby contaminating the floor brush and even the floor.

[0005] The utility model also provides a floor scrubber comprising the above-mentioned dirty liquid tank.

[0006] According to the embodiment of the first aspect of the present utility model, the dirty liquid tank is used for a floor scrubber and includes: a water tank shell, having a accommodating chamber for collecting dirty liquid, and an air flow outlet is formed on the top of the water tank shell; a sewage suction pipe fitting, at least a portion of the sewage suction pipe fitting is located in the accommodating chamber, the sewage suction pipe fitting has a sewage suction port and a sewage outlet, the sewage outlet is located in the accommodating chamber and below the air flow outlet, and the accommodating chamber connects the sewage outlet and the air flow outlet; a backflow prevention member is located in the accommodating chamber and is used to open and close the sewage outlet.

[0007] According to the dirty liquid tank of the embodiment of the present invention, a backflow prevention member is provided for opening and closing the sewage outlet. When the floor scrubber stops working, for example, when the floor scrubber is tilted, especially when the floor scrubber is lying flat, the backflow prevention member can close the sewage outlet to effectively prevent the dirty liquid from flowing back from the sewage outlet through the sewage suction pipe into the floor brush and contaminating the floor brush or even the floor.

[0008] According to some embodiments of the present invention, the backflow prevention member includes a shielding portion, which is suitable for moving to an open position of opening the sewage outlet under the action of the airflow flowing out of the sewage outlet, and the shielding portion is suitable for moving to a position of closing the sewage outlet under the action of its own gravity or elastic force.

[0009] According to some embodiments of the present invention, the shielding portion is a flexible portion.

[0010] According to some embodiments of the present invention, the shielding portion is a soft rubber portion.

[0011] According to some embodiments of the present invention, the shielding portion is in a sheet shape.

[0012] According to some embodiments of the present invention, when the floor scrubber is lying flat, the rear side of the floor scrubber faces downward, the sewage outlet faces upward, and the shielding portion is located above the sewage outlet.

[0013] According to some embodiments of the present invention, the backflow prevention member is installed on the sewage suction pipe and is located outside the sewage suction pipe.

[0014] According to some embodiments of the present invention, the backflow prevention member includes a fixing portion and a shielding portion, the fixing portion is fixed to the sewage suction pipe, and the shielding portion is movable relative to the sewage suction pipe to open and close the sewage outlet.

[0015] According to some embodiments of the present invention, the backflow prevention member is a flexible member, and the shielding portion and the fixing portion are both sheet-shaped.

[0016] According to some embodiments of the present invention, a pre-fold is provided between the shielding portion and the fixing portion, and in a direction from the fixing portion to the shielding portion, the shielding portion extends obliquely in a direction away from the sewage outlet.

[0017] According to some embodiments of the present invention, the fixing portion is connected to the sewage suction pipe through an adhesive layer.

[0018] According to some embodiments of the present utility model, the sewage suction pipe includes a sewage suction pipe body and a fixed protrusion, the sewage suction pipe body is formed with the sewage suction port and the sewage outlet, the fixed protrusion is arranged on the outer wall surface of the sewage suction pipe body and is located on the outer peripheral side of the sewage outlet, and the fixing part is fixed to the fixed protrusion.

[0019] According to some embodiments of the present invention, when the floor scrubber is upright, the sewage outlet faces the peripheral wall of the water tank shell, and the fixing portion is connected to the upper side of the shielding portion and is located above the sewage outlet.

[0020] According to some embodiments of the present invention, a liquid baffle is provided in the water tank shell, and the liquid baffle is located on the outer peripheral side of the sewage suction pipe and is spaced apart from the sewage suction pipe. At least a portion of the liquid baffle is opposite to the sewage outlet, and when the shielding portion is in the open position to open the sewage outlet, the shielding portion is in contact with and cooperates with the liquid baffle.

[0021] According to some embodiments of the present invention, a evacuation opening for evading the shielding portion is formed on the liquid baffle plate, and when the shielding portion is located at an open position for opening the sewage outlet, at least a portion of the shielding portion is accommodated in the evacuation opening.

[0022] According to the second aspect of the present invention, the floor scrubber includes: a body; a dirty liquid tank according to the first aspect of the present invention, the dirty liquid tank being installed on the body; a floor brush connected to the bottom of the body, the bottom of the floor brush having a suction port, the top of the floor brush having a first connection port, the first connection port being connected to the sewage suction port and connecting the suction port and the sewage suction port; a power assembly installed on the body and located on the upper side of the dirty liquid tank, the power assembly having a second connection port connected to the airflow outlet and an exhaust port connected to the external environment, the power assembly being used to drive the airflow from the suction port through the floor brush, the sewage suction pipe, the water tank shell and the power assembly.

[0023] According to the floor scrubber of the embodiment of the present invention, the above-mentioned dirty liquid tank is provided, and a backflow prevention member for opening and closing the sewage outlet is set through the dirty liquid tank. When the floor scrubber stops working, for example, when the floor scrubber is tilted, especially when the floor scrubber is lying flat, the backflow prevention member can close the sewage outlet to effectively prevent the dirty liquid from flowing back from the sewage outlet through the sewage suction pipe into the floor brush and contaminating the floor brush or even the floor.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is an exploded view of a dirty liquid tank according to some embodiments of the present invention;

[0027] Figure 2 yes Figure 1 Schematic diagram of the assembly of the sewage suction pipe and the backflow prevention member in the sewage liquid tank;

[0028] Figure 3 yes Figure 2Schematic diagram of the assembly of the outlet end of the sewage suction pipe and the backflow prevention member;

[0029] Figure 4 yes Figure 3 A schematic diagram of the assembly of the outlet end of the sewage suction pipe and the backflow prevention member from another angle;

[0030] Figure 5 yes Figure 1 Schematic diagram of the assembly of the sewage suction pipe, the water tank shell and the backflow prevention part in the sewage tank;

[0031] Figure 6 yes Figure 5 A schematic diagram of the assembly of the sewage suction pipe, the water tank shell and the backflow prevention member in the sewage tank from another angle;

[0032] Figure 7 yes Figure 6 A cross-sectional view of the sewage suction pipe, the water tank shell and the backflow prevention member in the sewage liquid tank;

[0033] Figure 8 yes Figure 5 Schematic diagram of the water tank shell in the dirty liquid tank.

[0034] Reference numerals:

[0035] 100. Dirty liquid tank;

[0036] 1. Water tank shell; 11. Accommodation chamber; 12. Liquid baffle; 121. Avoidance port; 13. Air flow outlet; 14. Shell; 15. Upper cover; 16. Gas-liquid separation rib plate;

[0037] 2. Sewage suction pipe fittings; 21. Sewage suction port; 22. Sewage outlet; 23. Sewage suction pipe body; 231. First pipe body; 232. Second pipe body; 24. Fixed bump; 25. Bottom sealing plate;

[0038] 3. Backflow prevention component; 31. Shielding portion; 32. Fixing portion; 33. Pre-crease. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] Reference below Figures 1-8 The dirty liquid tank 100 according to an embodiment of the present invention is described.

[0041] Reference Figure 1 、 Figure 2 and Figure 6According to the embodiment of the first aspect of the present invention, the dirty liquid tank 100 is used for a floor scrubber. The floor scrubber includes a body, a dirty liquid tank 100, a floor brush, and a power assembly. The dirty liquid tank 100 is arranged on the body, the floor brush is connected to the bottom of the body, the power assembly is installed on the body and the power assembly is located on the upper side of the dirty liquid tank 100. The power assembly has an exhaust port connected to the external environment, and the power assembly is used to drive airflow through the floor brush, the dirty liquid tank 100, and the power assembly.

[0042] When the floor scrubber is working, the power assembly works, and the floor brush of the floor scrubber sucks the dirty liquid on the working surface and flows it into the dirty liquid tank 100. The air flow carrying the dirty liquid is separated into gas and liquid in the dirty liquid tank 100, and the separated liquid is stored in the dirty liquid tank 100. The separated gas flows out of the dirty liquid tank 100 and is discharged into the external environment after passing through the power assembly.

[0043] The sewage liquid tank 100 includes a water tank shell 1, a sewage suction pipe 2 and a backflow prevention member 3. The water tank shell 1 has a accommodating cavity 11 for collecting sewage. An air flow outlet 13 is formed at the top of the water tank shell 1. At least a portion of the sewage suction pipe 2 is located in the accommodating cavity 11. The at least a portion of the sewage suction pipe 2 being located in the accommodating cavity 11 may include the following situations: for example, a portion of the sewage suction pipe 2 may be located in the accommodating cavity 11; for another example, the entire sewage suction pipe 2 may be located in the accommodating cavity 11.

[0044] The sewage suction pipe 2 has a sewage suction port 21 and a sewage discharge port 22. The sewage discharge port 22 is located within the accommodating chamber 11 and below the airflow outlet 13. The accommodating chamber 11 connects the sewage discharge port 22 and the airflow outlet 13. Sewage can enter the sewage suction pipe 2 from the sewage suction port 21, flow through the sewage suction pipe 2, and out of the sewage discharge port 22 into the water tank shell 1, where gas and liquid are separated. The sewage discharge port 22 is located within the accommodating chamber 11 to ensure that the sewage sucked by the sewage suction pipe 2 is discharged into the accommodating chamber 11. The airflow outlet 13 is formed at the top of the water tank shell 1, and the sewage discharge port 22 is located below the airflow outlet 13. The sewage can flow out of the sewage discharge port 22 by its own gravity and then be stored in the accommodating chamber 11. The separated gas flows out of the sewage tank 100 through the airflow outlet 13.

[0045] Optionally, the sewage suction pipe 2 includes a sewage suction pipe body 23 and a bottom sealing plate 25. The lower end of the sewage suction pipe body 23 is connected to the bottom sealing plate 25. The bottom sealing plate 25 can be used to seal the bottom of the water tank shell 1. The bottom sealing plate 25 and the water tank shell 1 can jointly define the accommodating cavity 11.

[0046] Optionally, the sewage suction pipe body 23 may include a first pipe body 231 and a second pipe body 232, the first pipe body 231 extends in the up and down directions, the lower end of the first pipe body 231 is formed with a sewage suction port 21, the second pipe body 232 is connected to the upper end of the first pipe body 231 and is formed into a curved pipe, and the second pipe body 232 is formed with a sewage outlet 22.

[0047] The backflow prevention member 3 is located in the accommodating chamber 11 and is used to open and close the sewage outlet 22. When the floor scrubber stops working, for example, when the floor scrubber is tilted, especially when the floor scrubber is lying flat, the dirty liquid in the accommodating chamber 11 is more likely to flow back through the sewage outlet 22 to the floor brush. At this time, the backflow prevention member 3 can close the sewage outlet 22 to prevent the dirty liquid from flowing back into the sewage suction pipe 2 from the sewage outlet 22 and flowing to the floor brush. When the floor scrubber is working, the backflow prevention member 3 can open the sewage outlet 22 to facilitate the discharge of dirty liquid into the accommodating chamber 11 through the sewage outlet 22.

[0048] According to the dirty liquid tank 100 of the embodiment of the present invention, by providing an anti-backflow component 3 for opening and closing the sewage outlet 22, when the floor scrubber stops working, for example, when the floor scrubber is tilted, especially when the floor scrubber is lying flat, the anti-backflow component 3 can close the sewage outlet 22 to effectively prevent the dirty liquid from flowing back from the sewage outlet 22 through the sewage suction pipe 2 into the floor brush and contaminating the floor brush or even the ground.

[0049] Reference Figure 2-Figure 5 According to some embodiments of the present invention, the backflow prevention member 3 includes a shielding portion 31. The shielding portion 31 is adapted to move to an open position, opening the outlet 22, under the influence of airflow flowing out of the outlet 22. The shielding portion 31 is adapted to move to a position closing the outlet 22 under the influence of its own gravity or elastic force. When the floor scrubber is in operation, the sewage suction pipe 2 draws in waste liquid through the sewage suction port 21. The airflow carrying the waste liquid flows toward the outlet 22. This airflow generates thrust on the shielding portion 31, causing it to move to the open position, opening the outlet 22. This opens the outlet 22 and facilitates the discharge of waste liquid from the outlet 22 into the accommodating chamber 11. When the floor scrubber is not working, for example, when the floor scrubber is lying flat, the rear side of the floor scrubber faces downward, the sewage outlet 22 faces upward, and the shielding portion 31 is located above the sewage outlet 22. At this time, the shielding portion 31 moves to a position closing the sewage outlet 22 under the action of its own gravity or elastic force, thereby preventing the sewage liquid from flowing back.

[0050] For example, the shielding portion 31 can be a flexible portion. When the floor scrubber is working, under the thrust of the airflow, the flexible portion can undergo elastic deformation to enable the shielding portion 31 to move to a position where the sewage outlet 22 is opened. When the floor scrubber is not working, the flexible portion can use its own elastic force to return to a position where the sewage outlet 22 is closed. For another example, the shielding portion 31 and the sewage suction pipe 2 can be connected by an elastic member. When the floor scrubber is working, the thrust generated by the airflow can overcome the elastic force of the elastic member to enable the shielding portion 31 to move to an open position where the sewage outlet 22 is opened. When the floor scrubber is not working, the restoring force of the elastic member can enable the shielding portion 31 to move to a position where the sewage outlet 22 is closed.

[0051] The automatic switching function of the shielding part 31 is achieved by utilizing the thrust of the airflow on the shielding part 31 or the gravity or elastic force of the shielding part 31 itself. This can simplify the structure of the backflow prevention part 3 and save manufacturing costs compared to using an electronic control module to control the automatic switching function of the backflow prevention part 3.

[0052] Reference Figure 2-Figure 5 According to some embodiments of the present invention, the shielding portion 31 is a flexible portion. When the floor scrubber is working, the flexible shielding portion 31 can be elastically deformed under the thrust of the airflow, so that the shielding portion 31 moves to the open position of opening the sewage outlet 22, thereby ensuring that the sewage can be smoothly discharged into the accommodating chamber 11 through the sewage outlet 22; when the floor scrubber is not working, the flexible shielding portion 31 can also move to the position of closing the sewage outlet 22 under the action of the restoring force, thereby preventing the sewage from flowing back into the sewage suction pipe 2 through the sewage outlet 22.

[0053] Reference Figure 2-Figure 4 According to some embodiments of the present invention, the shielding portion 31 is a soft rubber portion. For example, the shielding portion 31 can be a silicone portion, a rubber portion, or a plastic portion. The shielding portion 31 is a soft rubber portion so that the shielding portion 31 has good flexibility. When the floor scrubber is working, the soft rubber portion can be elastically deformed under the thrust of the airflow, so that the shielding portion 31 moves to the open position to open the sewage outlet 22; when the floor scrubber is not working, the soft rubber portion can also move to the position to close the sewage outlet 22 under the action of the restoring force.

[0054] Reference Figure 2-Figure 4 According to some embodiments of the present invention, the shielding portion 31 is in the form of a sheet. When the shielding portion 31 is in the position of closing the sewage outlet 22, the sheet-shaped shielding portion 31 can fit the sewage outlet 22 well, forming a good sealing effect, thereby effectively preventing the sewage from flowing back into the sewage suction pipe 2 through the sewage outlet 22. When the floor scrubber is working, the sheet-shaped shielding portion 31 can also reduce the resistance to the flow of sewage, so that the shielding portion 31 can be pushed by the airflow to move more smoothly to the open position to open the sewage outlet 22.

[0055] The sheet-like shielding portion 31 can take on a variety of shapes and sizes, such as square, rectangular, polygonal, circular, and elliptical. The specific shape and size of the shielding portion 31 are not limited and can be determined based on the specific shape and size of the sewage outlet 22. The size of the shielding portion 31 can be equal to, slightly larger than, or slightly smaller than the size of the wiper. This is sufficient as long as the shielding portion 31, when moved to a position that closes the sewage outlet 22, seals the sewage outlet 22 and prevents waste liquid from flowing back into the sewage suction pipe 2 through the sewage outlet 22.

[0056] Reference Figure 2-Figure 4 According to some embodiments of the present invention, when the floor scrubber is lying flat, the rear side of the floor scrubber faces downward, the sewage outlet 22 faces upward, and the shielding portion 31 is located above the sewage outlet 22. When the floor scrubber is lying flat, the sewage outlet 22 faces upward, so that the shielding portion 31 can naturally droop under the effect of its own gravity to cover the sewage outlet 22, preventing the sewage in the accommodating chamber 11 from flowing back into the sewage suction pipe 2 through the sewage outlet 22.

[0057] Reference Figure 2-Figure 4 According to some embodiments of the present invention, the backflow prevention member 3 is installed on the sewage suction pipe 2 and is located outside the sewage suction pipe 2. The backflow prevention member 3 being located outside the sewage suction pipe 2 can make the installation and maintenance of the backflow prevention member 3 more convenient, and can also reduce or avoid the resistance to the flow of sewage in the sewage suction pipe 2 caused by the backflow prevention member 3 being located inside the sewage suction pipe 2.

[0058] Reference Figure 2-Figure 5 According to some embodiments of the present invention, the backflow prevention member 3 includes a fixing portion 32 and a shielding portion 31. The fixing portion 32 is fixed to the sewage suction pipe 2, and the shielding portion 31 is movable relative to the sewage suction pipe 2 to open and close the sewage outlet 22. The fixing portion 32 is fixed to the sewage suction pipe and serves to fix the shielding portion 31. The shielding portion 31 is a free end and can move to a position to open or close the sewage outlet 22 under the thrust of the airflow or the gravity or elastic force of the shielding portion 31, thereby opening or closing the sewage outlet 22.

[0059] When the floor scrubber is working, the dirty liquid enters the accommodating chamber 11 through the sewage outlet 22. At this time, the airflow carrying the dirty liquid will generate an upward thrust on the shielding part 31. The thrust generated by the airflow can overcome the gravity or elastic force of the shielding part 31 itself, causing the shielding part 31 to move upward to the position of opening the sewage outlet 22, thereby opening the sewage outlet 22 and facilitating the dirty liquid to flow into the accommodating chamber 11 through the sewage outlet 22.

[0060] When the floor scrubber is not working, the shielding portion 31 will naturally droop under the action of its own gravity or elastic restoring force, and will again shield the sewage outlet 22 to prevent the sewage from flowing back into the sewage suction pipe 2.

[0061] Reference Figure 2-Figure 4 According to some embodiments of the present invention, the backflow prevention member 3 is a flexible member, and the shielding portion 31 and the fixing portion 32 are both sheet-shaped. The shielding portion 31 and the fixing portion 32 are both sheet-shaped and flexible. When the floor scrubber is operating, this helps reduce the resistance to gas flow through the sewage outlet 22. The shielding portion 31 is moved to an open position to open the sewage outlet 22 by the thrust of the airflow, so that the sewage outlet 22 is opened, allowing the sewage liquid and gas to be discharged more smoothly through the sewage outlet 22. When the floor scrubber is not operating, this allows the shielding portion 31 and the fixing portion 32 to fit tightly against the sewage outlet 22, helping to improve the sealing effect of the backflow prevention member 3 at the sewage outlet 22, thereby effectively preventing the sewage liquid from flowing back through the sewage outlet 22.

[0062] Reference Figure 2-Figure 4 According to some embodiments of the present invention, a pre-fold 33 is provided between the shielding portion 31 and the fixing portion 32. In the direction from the fixing portion 32 to the shielding portion 31, the shielding portion 31 extends obliquely away from the sewage outlet 22. The pre-fold 33 reduces the shielding portion 31's resistance to gas and liquid waste. When the airflow carrying the liquid waste passes through the sewage outlet 22, the shielding portion 31 is more easily pushed open, reducing resistance to the flow of gas and liquid waste. Furthermore, when the airflow is weak, the pre-fold 33 between the shielding portion 31 and the fixing portion 32 prevents the shielding portion 31 from covering the sewage outlet 22, allowing the airflow carrying the liquid waste to flow out of the sewage outlet 22 smoothly.

[0063] Reference Figure 2-Figure 4 According to some embodiments of the present invention, the fixing portion 32 is connected to the sewage suction pipe 2 via an adhesive layer, which can make the connection between the fixing portion 32 and the sewage suction pipe 2 simple and have greater stability.

[0064] Reference Figure 2-Figure 4According to some embodiments of the present invention, the sewage suction pipe 2 includes a sewage suction pipe body 23 and a fixed protrusion 24. The sewage suction pipe body 23 is formed with a sewage suction port 21 and a sewage outlet 22. The fixed protrusion 24 is provided on the outer wall surface of the sewage suction pipe body 23 and is located on the outer periphery of the sewage outlet 22. The fixing portion 32 is fixed to the fixed protrusion 24. The fixed protrusion 24 can provide support and fixation for the fixing portion 32, thereby facilitating the fixation of the backflow prevention member 3 to the sewage suction pipe 2. The fixing portion 32 is fixed to the fixed protrusion 24, providing stable support for the shielding portion 31. In this case, the shielding portion 31 is a free end and can move to an open position to open the sewage outlet 22 according to the thrust of the airflow at the sewage outlet 22, or move to a position to close the sewage outlet 22 due to its own gravity or elastic force.

[0065] Reference Figure 2-Figure 5 According to some embodiments of the present invention, when the floor scrubber is in an upright position, the sewage outlet 22 faces the peripheral wall of the water tank shell 1, and the fixing portion 32 is connected to the upper side of the shielding portion 31 and is located above the sewage outlet 22. When the floor scrubber is in operation, the sewage outlet 22 faces the peripheral wall of the water tank shell 1, and the fixing portion 32 is located above the sewage outlet 22. The fixing portion 32 can provide support and fixation for the shielding portion 31. At this time, the shielding portion 31 is a free end. When an airflow carrying sewage passes through the sewage outlet 22, the thrust of the airflow causes the shielding portion 31 to move relative to the sewage suction pipe 2 to an open position that opens the sewage outlet 22, allowing the sewage discharged through the sewage outlet 22 to be discharged more smoothly into the accommodating cavity 11 of the water tank shell 1.

[0066] Reference Figure 1 、 Figure 5-Figure 8 According to some embodiments of the present invention, a liquid baffle 12 is provided in the water tank shell 1, and the liquid baffle 12 is located on the outer peripheral side of the sewage suction pipe 2 and is separated from the sewage suction pipe 2, and at least a portion of the liquid baffle 12 is opposite to the sewage outlet 22, wherein at least a portion of the liquid baffle 12 is opposite to the sewage outlet 22 can include the following situations: for example, a portion of the liquid baffle 12 can be opposite to the sewage outlet 22; for another example, the entire liquid baffle 12 can be opposite to the sewage outlet 22.

[0067] When the shielding portion 31 is in the open position for opening the sewage outlet 22, the shielding portion 31 contacts and cooperates with the liquid baffle 12. By providing the liquid baffle 12 in the water tank shell 1, when the shielding portion 31 is in the open position for opening the sewage outlet 22, the shielding portion 31 contacts and cooperates with the liquid baffle 12, so that the shielding portion 31 can be more stably maintained in the open position for opening the sewage outlet 22, thereby preventing the shielding portion 31 from shaking or moving and increasing the resistance to the flow of the sewage, so that the sewage can flow out of the sewage outlet 22 more smoothly; and the shielding portion 31 contacts and cooperates with the liquid baffle 12, thereby blocking the gap between the sewage outlet 22 and the peripheral wall of the water tank shell 1, thereby preventing the sewage from overflowing through the gap between the sewage outlet 22 and the peripheral wall of the water tank shell 1 and flowing into other components in the water tank shell 1.

[0068] In addition, the liquid baffle 12 can also guide the dirty liquid so that it flows toward the receiving chamber 11, and can also play a role in gas-liquid separation. When the air flow carrying dirty liquid flows through the sewage outlet 22, the separated liquid can be drained into the receiving chamber 11 through the liquid baffle 12, and the separated gas flows out of the dirty liquid tank 100 through the air flow outlet 13.

[0069] Optionally, the water tank shell 1 includes a shell body 14 and an upper cover 15, the upper cover 15 is arranged on the top of the shell body 14, the air flow outlet 13 is formed on the upper cover 15, the liquid baffle plate 12 can be arranged on the upper cover 15 and the liquid baffle plate 12 is connected to the lower side of the upper cover 15, and the liquid baffle plate 12 can be integrally formed with the upper cover 15, which can enhance the overall structural strength of the water tank shell 1 to a certain extent, and can eliminate the assembly step between the liquid baffle plate 12 and the upper cover 15.

[0070] The upper cover 15 may also be provided with a gas-liquid separation rib 16, located on the underside of the upper cover 15. The gas-liquid separation rib 16 serves to separate the gas and liquid. The gas-liquid separation rib 16, the liquid baffle 12, and the upper cover 15 may be integrally formed, thereby enhancing the overall structural strength of the water tank shell 1 and eliminating the need for assembly between the gas-liquid separation rib 16, the liquid baffle 12, and the upper cover 15.

[0071] Reference Figure 5-Figure 8 According to some embodiments of the present invention, a relief opening 121 is formed on the liquid baffle plate 12 for circumventing the shielding portion 31. When the shielding portion 31 is in the open position, which opens the sewage outlet 22, at least a portion of the shielding portion 31 is accommodated within the relief opening 121. The at least partial accommodation of the shielding portion 31 within the relief opening 121 may include, for example, a portion of the shielding portion 31 being accommodated within the relief opening 121; or, for another example, the entire shielding portion 31 being accommodated within the relief opening 121.

[0072] The avoidance opening 121 facilitates at least partial accommodation of the shielding portion 31 therein, and makes the overall structure of the shielding portion 31 and the liquid baffle plate 12 compact. By providing the avoidance opening 121 on the liquid baffle plate 12, it is ensured that the shielding portion 31 has sufficient space to move to the open position of the sewage outlet 22, so that the sewage and air flow can flow smoothly through the sewage outlet 22 into the accommodating chamber 11. In addition, the avoidance opening 121 can serve as a limit for the shielding portion 31, allowing the shielding portion 31 to move more accurately to the open position of the sewage outlet 22.

[0073] Refer to the following Figures 1-8 The dirty liquid tank 100 according to some embodiments of the present invention is described. The dirty liquid tank 100 is used in a floor scrubber.

[0074] Reference Figure 1-Figure 3 In this embodiment, the sewage tank 100 includes a water tank shell 1, a sewage suction pipe 2, and a backflow prevention member 3. The water tank shell 1 has a accommodating chamber 11 for collecting sewage, and an air flow outlet 13 is formed at the top of the water tank shell 1. At least a portion of the sewage suction pipe 2 is located in the accommodating chamber 11. The sewage suction pipe 2 has a sewage suction port 21 and a sewage outlet 22. The sewage outlet 22 is located in the accommodating chamber 11 and below the air flow outlet 13. The accommodating chamber 11 connects the sewage outlet 22 and the air flow outlet 13. The backflow prevention member 3 is located in the accommodating chamber 11 and is used to open and close the sewage outlet 22. The backflow prevention member 3 is installed on the sewage suction pipe 2 and is located outside the sewage suction pipe 2.

[0075] The backflow prevention member 3 comprises a fixed portion 32 and a shielding portion 31. The backflow prevention member 3 is a flexible member, and both the shielding portion 31 and the fixed portion 32 are sheet-shaped. The fixed portion 32 is connected to the sewage suction pipe 2 via an adhesive layer. The shielding portion 31 is movable relative to the sewage suction pipe 2 to open and close the sewage outlet 22. The shielding portion 31 is adapted to move to an open position, thereby opening the sewage outlet 22, under the influence of airflow from the sewage outlet 22. The shielding portion 31 is adapted to move to a closed position, thereby closing the sewage outlet 22, under the influence of its own gravity or elastic force.

[0076] The shielding portion 31 is a flexible portion. A pre-fold 33 is defined between the shielding portion 31 and the fixing portion 32 . In the direction from the fixing portion 32 to the shielding portion 31 , the shielding portion 31 extends obliquely away from the sewage outlet 22 .

[0077] A liquid baffle 12 is provided within the water tank housing 1. The liquid baffle 12 is located on the outer periphery of the sewage suction pipe 2 and is spaced apart from the sewage suction pipe 2. At least a portion of the liquid baffle 12 faces the sewage outlet 22. When the shielding portion 31 is in the open position, which opens the sewage outlet 22, the shielding portion 31 contacts and cooperates with the liquid baffle 12. A clearance opening 121 is formed on the liquid baffle 12 for circumventing the barrier 31. When the shielding portion 31 is in the open position, which opens the sewage outlet 22, at least a portion of the barrier 31 is accommodated in the clearance opening 121.

[0078] When the floor scrubber is working, the sewage suction pipe 2 sucks in sewage through the sewage suction port 21, and the air flow carrying the sewage flows to the sewage outlet 22. These air flows will generate thrust on the shielding part 31, so that the shielding part 31 moves to the open position of opening the sewage outlet 22, so that the sewage outlet 22 is opened, which facilitates the sewage to be discharged from the sewage outlet 22 into the accommodating cavity 11.

[0079] When the floor scrubber is not working, for example, when the floor scrubber is lying flat, the rear side of the floor scrubber faces downward, the sewage outlet 22 faces upward, and the shielding portion 31 is located above the sewage outlet 22. At this time, the shielding portion 31 moves to a position closing the sewage outlet 22 under the action of its own gravity or elastic force, thereby preventing the sewage liquid from flowing back.

[0080] Reference Figure 1 、 Figure 2 and Figure 5 According to an embodiment of the second aspect of the present invention, a floor scrubber includes a body, a dirty liquid tank 100 according to the embodiment of the first aspect of the present invention, a floor brush, and a power assembly. The dirty liquid tank 100 is installed on the body, the floor brush is connected to the bottom of the body, the bottom of the floor brush has a suction port, the top of the floor brush has a first connection port, the first connection port is connected to the sewage suction port 21, and the first connection port communicates with the suction port and the sewage suction port 21. The power assembly is installed on the body and the power assembly is located on the upper side of the dirty liquid tank 100. The power assembly has a second connection port connected to the airflow outlet 13 and an exhaust port connected to the external environment. The power assembly is used to drive the airflow from the suction port through the floor brush, the sewage suction pipe 2, the water tank shell 1, and the power assembly.

[0081] The body is the main portion of the scrubber, supporting and securing the waste liquid tank 100, the floor brush, and the power assembly. The floor brush is located at the bottom of the body and has a suction port to facilitate the suction of waste liquid from the work surface. A first connection port is connected to the waste liquid suction port 21, and the first connection port communicates the suction port and the waste liquid suction port 21. This allows waste liquid from the work surface sucked in by the suction port to flow through the first connection port into the waste liquid suction port 21, then through the waste liquid suction pipe 23 to the waste liquid outlet 22, and then be discharged into the accommodating chamber 11 through the waste liquid outlet 22. Furthermore, air entering the scrubber from the suction port can flow through the first connection port into the waste liquid suction port 21, then through the waste liquid suction pipe 23 to the waste liquid outlet 22, and then be discharged into the accommodating chamber 11 through the waste liquid outlet 22. Due to the characteristics of the airflow itself, the airflow can flow upward into the airflow outlet 13. Because the power assembly has a second connection port connected to the airflow outlet 13 and an exhaust port connected to the external environment, the airflow at the airflow outlet 13 can be discharged into the external environment through the second connection port and the exhaust port.

[0082] When the floor scrubber is operating, its brushes draw in dirty liquid from the work surface and direct it into the dirty liquid tank 100. The airflow carrying the dirty liquid undergoes gas-liquid separation within the dirty liquid tank 100, with the separated liquid stored in the dirty liquid tank 100 and the separated gas flowing out of the dirty liquid tank 100. The power assembly drives the airflow through the airflow outlet 13 toward the exhaust port, where it is then discharged into the external environment.

[0083] According to the floor scrubber of the embodiment of the present invention, the above-mentioned dirty liquid tank 100 is provided, and the anti-backflow member 3 for opening and closing the sewage outlet 22 is set through the dirty liquid tank 100. When the floor scrubber stops working, for example, when the floor scrubber is tilted, especially when the floor scrubber is lying flat, the anti-backflow member 3 can close the sewage outlet 22 to effectively prevent the dirty liquid from flowing back from the sewage outlet 22 through the sewage suction pipe 2 into the floor brush and contaminating the floor brush or even the ground.

[0084] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present 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 should not be understood as a limitation to the present invention.

[0085] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0086] In the description of the present invention, “plurality” means two or more.

[0087] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0088] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0089] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0090] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dirty liquid tank, characterized in that: For use with floor scrubbers and including: A water tank shell has a receiving cavity for collecting waste liquid, and an air flow outlet is formed on the top of the water tank shell; a sewage suction pipe, at least a portion of which is located in the accommodating cavity, the sewage suction pipe having a sewage suction port and a sewage outlet, the sewage outlet being located in the accommodating cavity and below the airflow outlet, the accommodating cavity communicating with the sewage outlet and the airflow outlet; The backflow prevention member is located in the accommodating cavity and is used to open and close the sewage outlet.

2. The dirty liquid tank according to claim 1, characterized in that The backflow prevention member includes a shielding portion, which is suitable for moving to an open position of opening the sewage outlet under the action of the airflow flowing out of the sewage outlet, and the shielding portion is suitable for moving to a position of closing the sewage outlet under the action of its own gravity or elastic force.

3. The dirty liquid tank according to claim 2, characterized in that: The shielding portion is a flexible portion.

4. The dirty liquid tank according to claim 3, characterized in that: The shielding portion is a soft rubber portion.

5. The dirty liquid tank according to claim 2, characterized in that: The shielding portion is in a sheet shape.

6. The dirty liquid tank according to claim 2, characterized in that: When the floor scrubber is lying flat, the rear side of the floor scrubber faces downward, the sewage outlet faces upward, and the shielding portion is located above the sewage outlet.

7. The dirty liquid tank according to any one of claims 1 to 6, characterized in that: The backflow prevention component is installed on the sewage suction pipe component and is located outside the sewage suction pipe component.

8. The dirty liquid tank according to claim 7, characterized in that: The backflow prevention member includes a fixing portion and a shielding portion, wherein the fixing portion is fixed to the sewage suction pipe member, and the shielding portion is movable relative to the sewage suction pipe member to open and close the sewage outlet.

9. The dirty liquid tank according to claim 8, characterized in that: The backflow prevention component is a flexible component, and the shielding portion and the fixing portion are both sheet-shaped.

10. The dirty liquid tank according to claim 9, characterized in that: A pre-fold is provided between the shielding portion and the fixing portion. In a direction from the fixing portion to the shielding portion, the shielding portion extends obliquely in a direction away from the sewage outlet.

11. The dirty liquid tank according to claim 8, characterized in that The fixing portion is connected to the sewage suction pipe through an adhesive layer.

12. The dirty liquid tank according to claim 8, characterized in that The sewage suction pipe comprises a sewage suction pipe body and a fixing protrusion, wherein the sewage suction pipe body is formed with the sewage suction port and the sewage outlet, the fixing protrusion is arranged on the outer wall surface of the sewage suction pipe body and is located on the outer peripheral side of the sewage outlet, and the fixing part is fixed to the fixing protrusion.

13. The dirty liquid tank according to claim 8, characterized in that When the floor scrubber is upright, the sewage outlet faces the peripheral wall of the water tank shell, and the fixing portion is connected to the upper side of the shielding portion and is located above the sewage outlet.

14. The dirty liquid tank according to claim 13, characterized in that A liquid baffle is provided in the water tank shell, and the liquid baffle is located on the outer peripheral side of the sewage suction pipe and is spaced apart from the sewage suction pipe. At least a portion of the liquid baffle is opposite to the sewage outlet. When the shielding portion is in the open position for opening the sewage outlet, the shielding portion contacts and cooperates with the liquid baffle.

15. The dirty liquid tank according to claim 14, characterized in that The liquid shielding plate is formed with an escape opening for evading the shielding portion. When the shielding portion is located at an open position for opening the sewage outlet, at least a portion of the shielding portion is accommodated in the escape opening.

16. A floor scrubber, characterized in that: include: body; The dirty liquid tank according to any one of claims 1 to 15, wherein the dirty liquid tank is mounted on the fuselage; A floor brush is connected to the bottom of the body, the bottom of the floor brush has a suction port, the top of the floor brush has a first connection port, the first connection port is connected to the sewage suction port and communicates the suction port and the sewage suction port; A power assembly is installed on the fuselage and located on the upper side of the dirty liquid tank. The power assembly has a second connection port connected to the air flow outlet and an exhaust port connected to the external environment. The power assembly is used to drive the air flow from the suction port through the floor brush, the sewage suction pipe, the water tank shell and the power assembly.

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