A water tank and surface cleaning apparatus

Abstract

The application provides a water tank and a surface cleaning device. The water tank comprises a water tank body provided with a liquid containing cavity and a flexible partition, the partition is arranged obliquely relative to an axis of the liquid containing cavity and is connected to a peripheral wall of the liquid containing cavity, and the partition divides the liquid containing cavity into a clean water cavity and a dirty water cavity with variable volumes. The water tank has the advantages that the partition is simple to fix, the water tank is low in manufacturing cost, the position of the partition in the liquid containing cavity is fixed, only sealing is required between the partition and the cavity wall of the liquid containing cavity, and the sealing is easy to realize. In the case that the partition is not damaged, no leakage occurs between the clean water cavity and the dirty water cavity at the partition, and the water tank is not scratched.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment, specifically to a water tank and a surface cleaning device. Background Technology

[0002] The related technology provides a floor scrubber with dynamically adjustable water tank volume. The water tank is divided into a clean water chamber 11 and a wastewater chamber 12 by an internal adjusting baffle 13. The adjusting baffle 13 is driven by a screw nut motor structure 14 to dynamically adjust the volume of the water tank, so that the volume of the clean water chamber 11 and the volume of the wastewater chamber 12 can be more rationally allocated according to actual use needs.

[0003] The adjustment baffle 13 and the inner wall of the water tank are sealed by a sealant. Movement and sealing are inherently contradictory. Movement requires a certain amount of clearance, while sealing requires no clearance. It is difficult to achieve a solution that satisfies both movement and sealing at the same time. In addition, the reciprocating movement of the adjustment baffle 13 will scratch the inner wall of the water tank, especially in transparent water tanks where visible scratches will form. Furthermore, the screw nut motor structure 14 is complex and costly. In the sewage chamber 12, the screw nut is also prone to dirt accumulation, causing transmission jamming. Summary of the Invention

[0004] The main objective of this invention is to provide a water tank that is not only simple in structure, easy to manufacture, and low in manufacturing cost, but also has good performance.

[0005] This invention also provides a surface cleaning device.

[0006] To achieve the above objectives, the water tank proposed in this embodiment of the invention includes: a water tank body with a liquid-containing cavity; and a flexible partition, which is inclined relative to the axis of the liquid-containing cavity and connected to the peripheral wall of the liquid-containing cavity, wherein the partition divides the liquid-containing cavity into a clear water cavity and a sewage cavity with variable volume.

[0007] In an exemplary embodiment, the angle of inclination of the separator relative to the axis of the liquid-containing cavity is 15 degrees to 60 degrees.

[0008] In an exemplary embodiment, the water tank body has a first air duct on its mounting side. The first air duct includes a conveying section and an outlet section that are connected to each other. The conveying section extends from the clean water chamber to the wastewater chamber, and the outlet section is located inside the wastewater chamber. The conveying section is connected to the wastewater chamber through the outlet section.

[0009] In an exemplary embodiment, along the extension direction of the conveying section: the separator is inclined from the second side of the water tank body toward the mounting side, the second side being the opposite side to the mounting side.

[0010] In an exemplary embodiment, along the extension direction of the conveying section: the separator is inclined from the mounting side toward a second side of the water tank body, the second side being opposite to the mounting side.

[0011] In an exemplary embodiment, the water tank body is further provided with a second air duct, the sewage chamber is located between the clean water chamber and the second air duct, and the inlet of the second air duct is connected to the end of the sewage chamber away from the clean water chamber.

[0012] In an exemplary embodiment, the outlet of the outlet section and the inlet of the second air duct are located in the area within the sewage chamber away from the installation side.

[0013] In one exemplary embodiment, the separator is a diaphragm.

[0014] In one exemplary embodiment, the diaphragm has a protruding structure, and the plane where the diaphragm connects to the peripheral wall of the liquid-containing cavity is inclined relative to the axis of the liquid-containing cavity.

[0015] The surface cleaning device provided in this embodiment of the invention includes a body and a water tank as described in any of the above embodiments, wherein the water tank is mounted on the body.

[0016] In one exemplary embodiment, the surface cleaning device is a floor scrubber.

[0017] In the technical solution of this invention, the method of fixing the separator is simple, the manufacturing cost of the water tank is low, and the separator is fixed in position inside the liquid-containing cavity. Only a seal is required between the separator and the cavity wall of the liquid-containing cavity, which is easy to achieve. Without damage to the separator, there will be no leakage problem between the clear water cavity and the sewage cavity at the separator, and the water tank will not be scratched. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the water tank in the floor scrubber described in the related technology;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of an example water tank according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2The diagram shows a right-side sectional view of the water tank in its operational state.

[0022] Figure 4 for Figure 2 A right-side sectional view of the water tank in another usage state;

[0023] Figure 5 This is a right-side structural cross-sectional view of another example of the water tank described in one embodiment of the present invention;

[0024] Figure 6 for Figure 5 A schematic cross-sectional view of the water tank shown in the diagram.

[0025] Figure 7 This is a right-side structural cross-sectional view of another example of the water tank described in one embodiment of the present invention;

[0026] Figure 8 This is a right-side structural cross-sectional view of another example of the water tank described in one embodiment of the present invention;

[0027] Figure 9 This is a right-side structural cross-sectional view of another example of the water tank described in one embodiment of the present invention;

[0028] Figure 10 This is a three-dimensional structural diagram of a floor scrubber according to an embodiment of the present invention;

[0029] Figure 11 for Figure 10 The diagram shows a partial cross-sectional view of the floor scrubber.

[0030] in, Figure 1 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0031] 11. Clear water chamber, 12. Sewage chamber, 13. Adjustment baffle, 14. Screw nut motor structure.

[0032] Figures 2 to 11 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0033] 100 Water tank body, 110 First air duct, 111 Conveying section, 112 Outlet section, 120 Second air duct, 130 Clean water chamber, 131 Water outlet valve, 132 Water filling cover, 140 Sewage chamber, 141 Second baffle wall, 150 Partition plate, 151 First baffle wall, 160 Folded plate, 161 Horizontal plate, 170 Protrusion, 180 Support rib, 191 First area, 192 Second area, 200 Separator, 300 Installation side, 400 Second side, 510 Body, 520 Floor brush, 530 Fan assembly, 610 First deflector section, 620 Second deflector section, 630 Third deflector section.

[0034] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0037] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection. "Connection" can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0040] This invention provides a water tank, comprising: a water tank body having a liquid-containing cavity; and a flexible partition, which is inclined relative to the axis of the liquid-containing cavity and connected to the peripheral wall of the liquid-containing cavity, wherein the partition divides the liquid-containing cavity into a clear water cavity and a wastewater cavity with variable volume.

[0041] The water tank has a simple method for fixing the partition, resulting in low manufacturing costs. The partition is fixed in position within the liquid-containing chamber, and only a seal is required between the partition and the wall of the liquid-containing chamber, which is easy to achieve. Without damage to the partition, there will be no leakage between the clean water chamber and the wastewater chamber at the partition, and the water tank will not be scratched.

[0042] This invention also provides a surface cleaning device, including a body and a water tank as described in any of the above embodiments, wherein the water tank is mounted on the body.

[0043] This surface cleaning device possesses all the advantages of the water tank provided in any of the above embodiments, which will not be elaborated further here.

[0044] Figure 2 This is a three-dimensional structural schematic diagram of an example water tank according to an embodiment of the present invention. Figure 3 for Figure 2 The diagram shows a right-side sectional view of the water tank in its operational state. Figure 4 for Figure 2 The diagram shows a right-side sectional view of the water tank in another usage state. Figure 5 This is a right-side structural cross-sectional view of another example of the water tank described in one embodiment of the present invention. Figure 6 for Figure 5 The diagram shows a front view of the water tank in cross-section. Figure 7 This is a right-side structural cross-sectional schematic diagram of another example of the water tank described in one embodiment of the present invention. Figure 8 This is a right-side structural cross-sectional schematic diagram of another example of the water tank described in one embodiment of the present invention. Figure 9 This is a right-side structural cross-sectional schematic diagram of another example of the water tank described in one embodiment of the present invention. Figure 10 This is a three-dimensional structural diagram of a floor scrubbing machine according to an embodiment of the present invention. Figure 11 for Figure 10 The diagram shows a partial cross-sectional view of the floor scrubber.

[0045] like Figures 2 to 11As shown, this embodiment of the invention provides a water tank for a floor scrubber, including a tank body 100 and a flexible partition 200. The tank body 100 has a liquid-holding chamber, a first air duct 110, and a second air duct 120. The edge of the partition 200 is directly or indirectly connected to the peripheral wall of the liquid-holding chamber, dividing the liquid-holding chamber into a variable-volume clean water chamber 130 and a wastewater chamber 140. The clean water chamber 130 and the wastewater chamber 140 are located on the same side of the first air duct 110, and the clean water chamber 130, the wastewater chamber 140, and the second air duct 120 are arranged sequentially along the extension direction of the first air duct 110. The outlet of the first air duct 110 is connected to the end of the wastewater chamber 140 away from the clean water chamber 130, and the inlet of the second air duct 120 is connected to the end of the wastewater chamber 140 away from the clean water chamber 130. The extension direction of the first air duct 110 is from the inlet of the first air duct 110 to the outlet of the first air duct 110.

[0046] This technical solution features a simple, easy-to-implement, and low-cost method for fixing the separator 200. Furthermore, the separator 200 is fixed in position within the liquid-containing cavity, and there will be no leakage problem between the clear water cavity 130 and the sewage cavity 140 at the separator 200 as long as the separator 200 is not damaged.

[0047] Among them, such as Figures 2 to 5 , Figures 7 to 11 As shown, the side where the first air duct 110 of the water tank body 100 is located is the installation side 300 of the water tank, and the side where the clean water chamber 130 and the wastewater chamber 140 of the water tank body 100 are located is the second side 400 of the water tank. The installation side 300 and the second side 400 are opposite sides. The inlet of the second air duct 120 is away from the installation side 300 and close to the second side 400. This water tank is used in a floor scrubber. The water tank is installed on the body 510 of the floor scrubber, with the installation side 300 of the water tank facing the body 510 of the floor scrubber. The clean water chamber 130 is located between the wastewater chamber 140 and the floor brush 520 of the floor scrubber. The inlet of the first air duct 110 faces the floor brush 520, and the outlet of the second air duct 120 faces away from the floor brush 520 and is used in conjunction with the filter and the fan assembly 530 on the body 510. The fan assembly 530 includes a cover and components such as a motor installed inside the cover. When the floor scrubber is working, the water in the clean water chamber 130 is gradually consumed, and the separator 200 deforms toward the clean water chamber 130, causing the volume of the clean water chamber 130 to gradually decrease and the volume of the wastewater chamber 140 to gradually increase. The wastewater enters the wastewater chamber 140 from the outlet of the first air duct 110 along the first air duct 110, and the liquid level in the wastewater chamber 140 will be lower. Even with the floor scrubber body 510 tilted at a large angle, the wastewater in the wastewater chamber 140 is always below the inlet of the second air duct 120. The wastewater in the wastewater chamber 140 will not enter the second air duct 120 from the inlet of the second air duct 120, and therefore will not pass through the filter along the second air duct 120 and enter the fan assembly, damaging the motor. Therefore, this floor scrubber can clean low-height spaces such as under the bed and under the cabinet.

[0048] Furthermore, such as Figures 3 to 5 , Figure 7 , Figure 8 and Figure 11 As shown, the outlet of the first air duct 110 extends from the installation side 300 to the second side 400 into the sewage chamber 140 (possibly, the first air duct 110 includes a connected conveying section 11 and an outlet section 112, the conveying section 111 is arranged axially along the liquid-containing chamber, the outlet section 112 is located within the sewage chamber 140, and the outlet section 112 extends radially from the conveying section 111 along the sewage chamber 140 so that the outlet of the outlet section 112 is away from the installation side, and the first air duct 110 communicates with the sewage chamber 140 through the outlet section 112). The inlet of the second air duct 120 is located on the end wall of the sewage chamber 140 away from the clear water chamber 130, and the outlet of the first air duct 110 and the inlet of the second air duct 120 are connected by a partition 150. The first air duct 110 is separated from the partition 150, and a first deflector section 610 is formed between the outlet of the first air duct 110 and the partition 150. When the body 510 of the floor scrubber is tilted, it can ensure that the outlet of the first air duct 110 is above the liquid surface in the sewage chamber 140. This can prevent sewage in the sewage chamber 140 from flowing back from the outlet of the first air duct 110 along the first air duct 110 when the body 510 is tilted at a large angle. It can also prevent the airflow (moving from the outlet of the first air duct 110 through the sewage chamber 140 to the inlet of the second air duct 120) from blowing the sewage in the sewage chamber 140 up and blowing it into the blower assembly 530 along the second air duct 120, which would cause water damage to the motor.

[0049] It can be, such as Figures 3 to 5 , Figure 7 and Figure 8 As shown, the outlet of the first air duct 110 and the inlet of the second air duct 120 are arranged sequentially in a first direction, which is the direction from the installation side 300 to the second side 400; or it could be, as Figure 9 As shown, the outlet of the first air duct 110 and the inlet of the second air duct 120 are arranged sequentially in the second direction, which is perpendicular to the first direction and parallel to the end wall of the clean water chamber 130 away from the sewage chamber 140. All of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention. They will not be repeated here, and all should fall within the protection scope of this application.

[0050] Better, such as Figure 5As shown, the partition 150 is provided with a first baffle wall 151, which is horizontally positioned outside the outlet of the first air duct 110 and spaced apart from the outlet of the first air duct 110, and blocks the outlet of the first air duct 110. A second baffle section 620 is constructed between the outlet of the first deflector section 610 and the first baffle wall 151, which can prevent the airflow blown out of the outlet of the first air duct 110 from directly blowing onto the sewage surface in the sewage chamber 140 and causing sewage splashing. A second baffle wall 141 is provided inside the sewage chamber 140, which is horizontally positioned outside the inlet of the second air duct 120 and spaced apart from the inlet of the second air duct 120, and blocks the inlet of the second air duct 120. A third baffle section 630 is constructed between the inlet of the second air duct 120 and the second baffle wall 141, which can better prevent the sewage splashed in the sewage chamber 140 from entering the second air duct 120 through the inlet of the second air duct 120.

[0051] It can be that the partition 150 is a straight plate (not shown in the figure); or it can be that the partition 150 is an irregularly shaped plate (such as...). Figures 3 to 5 , Figure 7 and Figure 8 As shown, the irregularly shaped plate can better block the sewage entering the sewage chamber 140 from the first air duct 110, so that the sewage can flow better into the sewage chamber 140 under the action of gravity along the irregularly shaped plate; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention, and will not be repeated here, and should all fall within the protection scope of this application.

[0052] It can be, such as Figures 3 to 6 , Figure 8 As shown, the plane where the separator 200 connects to the liquid-containing chamber is parallel to the end wall of the clean water chamber 130 that is away from the wastewater chamber 140; or it can be, as... Figure 7 As shown, the plane where the edge of the separator 200 is located is perpendicular to the end wall of the clear water chamber 130 away from the sewage chamber 140. The technical solution employed includes a folded plate 160 inside the liquid-containing chamber. The folded plate 160 includes two horizontal plates 161 and one vertical plate. The two horizontal plates 161 are located on both sides of the vertical plate and connected by the vertical plate. An installation opening is provided on the vertical plate, located between the two horizontal plates 161. The separator 200 is fixedly installed at the installation opening. The separator 200 and the folded plate 160 divide the liquid-containing chamber into the clear water chamber 130 and the sewage chamber 140. The wastewater chamber 140, a water tank used in a floor scrubber, has one of the two horizontal plates 161 adjacent to the fan assembly 530 and away from the floor brush 520, while the other of the two horizontal plates 161 is adjacent to the floor brush 520 and away from the fan assembly 530; alternatively, the plane where the partition 200 connects to the liquid-holding chamber is inclined relative to the end wall of the clean water chamber 130 away from the wastewater chamber 140, for example: the partition 200 is inclined from the second side 400 to the mounting side 300 along the extension direction of the first air duct 110 (which can be understood as: from bottom to top), such as... Figure 11 As shown, the tilt angle θ can be 15 degrees to 60 degrees. When the floor scrubber is working normally, the machine body 510 forms a certain angle with the ground, and the separator 200 is more horizontal. This results in a small angle between the separator 200 and the liquid surface in the wastewater chamber 140, effectively increasing the effective volume of the wastewater chamber 140 towards the clean water chamber 130, thus increasing the distance between the liquid surface in the wastewater chamber 140 and the inlet of the second air duct 120. Alternatively, the separator 200 can extend along the first air duct 110 from the installation side 300 towards the second side. The floor scrubber is tilted at 400 degrees (not shown in the diagram), with the tilt angle ranging from 15 to 60 degrees. In this configuration, when the floor scrubber is working normally, the lowest point of the wastewater chamber 140 is lower and forms an inverted triangle. The inverted triangle structure increases the volume of the wastewater chamber 140, allowing it to hold more wastewater. Furthermore, the distance between the liquid level in the wastewater chamber 140 and the inlet of the second air duct 120 is also greater. All of the above achieve the purpose of this application, and their intent does not depart from the design concept of this invention. They will not be elaborated further here, and should all fall within the protection scope of this application.

[0053] For example, such as Figures 3 to 6 , Figure 8 and Figure 11 As shown, when the plane where the separator 200 connects to the liquid-containing chamber is arranged parallel to or inclined relative to the end wall of the clean water chamber 130 away from the wastewater chamber 140, see [reference needed]. Figure 8 The distance between the edge of the separator 200 and the end wall of the clean water chamber 130 away from the sewage chamber 140 is L1. The height of the liquid-holding chamber in the extension direction of the first air duct 110 is L2. When L1 / L2>0.5, the volume of the sewage chamber 140 is insufficient; when L1 / L2<0.25, the volume of the clean water chamber 130 is insufficient. Therefore, L1 / L2 is set to 0.25~0.5. For the structure in which the plane where the separator 200 connects to the peripheral wall of the liquid-holding chamber is inclined relative to the axis of the liquid-holding chamber, the distance L1 between the separator 200 and the end wall of the clean water chamber 130 away from the sewage chamber 140 is set as the average of the maximum and minimum distances between the separator and the end wall of the clean water chamber 130 away from the sewage chamber 140. For the scheme where the separator 200 is connected to the folded plate 160, the average distance between the two horizontal plates 161 and the end wall of the clean water chamber 130 away from the sewage chamber 140 is L1, the height of the liquid-containing chamber in the extension direction of the first air duct 110 is L2, and L1 / L2 is set to 0.25~0.5.

[0054] When the clean water chamber 130 is filled with water, during the initial cleaning stage, the body 510 of the floor scrubber is tilted. The separator 200 protrudes towards the wastewater chamber 140, forming a bulge 170 (the separator has a protruding structure, and water squeezes the protruding structure to form the bulge 170). The bulge 170 rests against the mounting side 300, causing the first area 191 of the wastewater chamber 140 facing the clean water chamber 130, adjacent to the mounting side 300, to be largely filled by the bulge 170, making it difficult to hold wastewater. The wastewater is stored in the second area 192 of the wastewater chamber 140 facing the clean water chamber 130, adjacent to the second side 400. This second area 192 is closer to the inlet of the second air duct 120. The airflow entering the wastewater chamber 140 from the outlet of the first air duct 110 easily blows the wastewater in the second area 192 up, causing the wastewater to be blown from the inlet of the second air duct 120 along the second air duct 120 into the blower assembly 530, resulting in water damage to the motor. Figure 5 As shown, a support structure can be set in the first region 191. The support structure can be multiple support ribs 180 spaced apart. The support ribs 180 support the protrusion 170, so that a space for accommodating sewage is formed between adjacent support ribs 180, ensuring that a large amount of sewage can be stored in the first region 191. At this time, there is very little sewage in the second region 192 and the distance from the inlet of the second air duct 120 is far. The airflow entering the sewage chamber 140 from the outlet of the first air duct 110 will not blow up the sewage in the second region 192 as it moves towards the inlet of the second air duct 120. Therefore, there will be no problem of sewage being blown from the inlet of the second air duct 120 to the blower assembly. This can better prevent the motor from being damaged by water. As the water in the clear water chamber 130 decreases, the protrusion 170 will gradually disappear, and the separator 200 will deform into the clear water chamber 130, which will increase the volume of the sewage chamber 140 and lower the liquid level in the sewage chamber 140.

[0055] It could be: such as Figure 5 and Figure 6 As shown, on the installation side 300, multiple support ribs 180 are spaced apart circumferentially along the water tank body 100, and each support rib 180 extends axially along the water tank body 100. The protrusion height of any support rib 180 can be set to gradually decrease from the end away from the partition 200 to the end adjacent to the partition 200; or, on the installation side 300, multiple support ribs 180 are spaced apart axially along the water tank body 100, and each support rib 180 extends circumferentially along the water tank body 100 (not shown in this embodiment). The protrusion height of the multiple support ribs 180 can be set to decrease sequentially from the end away from the partition 200 to the end adjacent to the partition 200, and each support rib 180 is a circular arc protrusion rib. All of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention. They will not be elaborated here, and should all fall within the protection scope of this application.

[0056] For example, the separator 200 is configured as a flexible diaphragm sheet, which is installed in a replaceable manner so that the user can replace the diaphragm sheet himself if it is damaged.

[0057] The flexible diaphragm can be made of neoprene rubber, nitrile rubber, polytetrafluoroethylene or perfluoroethylene, etc., all of which can achieve the purpose of this application. Their purpose has not departed from the design concept of this invention, and will not be elaborated here. They should all fall within the protection scope of this application.

[0058] like Figures 3 to 5 As shown, the end of the clean water chamber 130 away from the sewage chamber 140 is provided with a water outlet valve 131 and a water inlet cover 132.

[0059] This invention also provides a floor scrubbing machine, such as... Figure 10 and Figure 11 As shown, it includes a floor brush 520, a body 510 connected to the floor brush 520, and a water tank as described in any of the above embodiments. The water tank is installed on the body 510. The inlet of the first air duct 110 is connected to the floor brush 520, and the outlet of the second air duct 120 is connected to the fan assembly 530 on the body 510. The fan assembly 530 includes a cover for the air outlet and components such as a motor installed inside the cover.

[0060] This floor scrubber possesses all the advantages of the water tank provided in any of the above embodiments, which will not be elaborated further here.

[0061] For example, a filter (not shown in the figure) is provided between the shroud and the outlet of the second air duct 520. The filter is used to remove dirt from the airflow blowing from the second air duct 520 to the shroud, thereby providing better dust protection for the motor inside the shroud.

[0062] In summary, in the technical solution of this invention, the water tank is applied to the floor scrubber, which is installed on the body of the floor scrubber. The floor brush is installed at one end of the body. The inlet of the first air duct is connected to the floor brush, and the outlet of the second air duct is connected to the blower assembly. The installation side faces the body, and the second side faces away from the body. The outlet of the first air duct and the inlet of the second air duct are both far from the installation side and close to the second side. When the body of the floor scrubber is tilted at a large angle, the liquid level of the sewage in the sewage chamber is below the outlet of the first air duct and the inlet of the second air duct. It will not flow back from the outlet of the first air duct to the first air duct, nor will it flow into the second air duct from the inlet of the second air duct.

[0063] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "periphery", "square-shaped structure" and the like are based on the orientation or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred structure must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0064] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connected", "directly connected", "indirectly connected", " fixedly connected", "mounted", "assembled" shall be construed in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; the terms "mounted", "connected", "fixedly connected" may be directly connected, or indirectly connected through an intermediate medium, or may be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood under specific circumstances.

[0065] Although the embodiments disclosed in the present invention are as described above, the described contents are merely the embodiments adopted for the convenience of understanding the present invention, and are not intended to limit the present invention. Any person skilled in the art to which the present invention pertains may make any modifications and variations in the form and details of implementation without departing from the spirit and scope disclosed by the present invention, but the patent protection scope of the present invention shall still be defined by the appended claims.

[0066] The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made by using the contents of the specification and accompanying drawings of the present invention under the concept of the present invention, or direct / indirect application in other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A water tank, characterized in that, include: A water tank body equipped with a liquid-containing chamber; and A flexible partition is inclined relative to the axis of the liquid-containing cavity and connected to the peripheral wall of the liquid-containing cavity. The partition divides the liquid-containing cavity into a variable-volume clear water cavity and a wastewater cavity. A first air duct is provided on the mounting side of the water tank body. The first air duct includes a connected conveying section and an outlet section. The conveying section extends from the clear water cavity to the wastewater cavity, and the outlet section is located in the wastewater cavity. The conveying section communicates with the wastewater cavity through the outlet section. The outlet section extends radially from the conveying section along the sewage chamber, such that the outlet of the outlet section is away from the installation side. The outlet of the first air duct and the inlet of the second air duct are separated by a partition. The outlet of the first air duct faces the partition. A first baffle section is formed between the outlet of the first air duct and the partition. The partition is provided with a first blocking wall. The first blocking wall is placed horizontally outside the outlet of the first air duct, spaced apart from the outlet of the first air duct, and blocks the outlet of the first air duct. A second baffle section is formed between the outlet of the first baffle section and the first blocking wall.

2. The water tank according to claim 1, characterized in that, The angle of inclination of the separator relative to the axis of the liquid-containing cavity is 15 degrees to 60 degrees.

3. The water tank according to claim 1 or 2, characterized in that, Along the extension direction of the conveying section: the separator is inclined from the second side of the water tank body toward the mounting side, and the second side and the mounting side are opposite sides.

4. The water tank according to claim 1 or 2, characterized in that, Along the extension direction of the conveying section: the separator is inclined from the mounting side toward a second side of the water tank body, the second side being opposite to the mounting side.

5. The water tank according to claim 1 or 2, characterized in that, The water tank body is also provided with a second air duct, the sewage chamber is located between the clean water chamber and the second air duct, and the inlet of the second air duct is connected to the end of the sewage chamber away from the clean water chamber.

6. The water tank according to claim 5, characterized in that, The outlet of the outlet section and the inlet of the second air duct are located in the area inside the sewage chamber away from the installation side.

7. The water tank according to claim 1, 2, or 6, characterized in that, The separator is a diaphragm.

8. The water tank according to claim 3, characterized in that, The separator is a diaphragm.

9. The water tank according to claim 4, characterized in that, The separator is a diaphragm.

10. The water tank according to claim 5, characterized in that, The separator is a diaphragm.

11. The water tank according to claim 7, characterized in that, The diaphragm has a raised structure, and the plane where the diaphragm connects to the peripheral wall of the liquid-containing cavity is inclined relative to the axis of the liquid-containing cavity.

12. The water tank according to claim 8, 9 or 10, characterized in that, The diaphragm has a raised structure, and the plane where the diaphragm connects to the peripheral wall of the liquid-containing cavity is inclined relative to the axis of the liquid-containing cavity.

13. A surface cleaning device, characterized in that, It includes a fuselage and a water tank as described in any one of claims 1 to 12, the water tank being mounted on the fuselage.

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