Liquid collection device and cleaning equipment

Abstract

The present invention discloses a liquid collection device and a cleaning device. The liquid collection device includes: a box body having an accommodation cavity and an exhaust passage; a rotating assembly including an impeller provided with an air inlet, the impeller being rotatably disposed in the accommodation cavity, and the accommodation cavity being communicated with the exhaust passage through the air inlet; a liquid inlet mechanism having a liquid outlet, the liquid outlet being communicated with the accommodation cavity; a stop structure disposed in the accommodation cavity, the stop structure including a stop baffle located between the liquid outlet and the impeller; wherein, the box body includes a first side wall and a second side wall, and the distance between the liquid inlet mechanism and the first side wall is greater than the distance between the liquid inlet mechanism and the second side wall; the liquid collection device has a lying state where the first side wall is below the second side wall. When the liquid collection device is in the lying state, the air inlet is higher than the highest water level distribution of the accommodation cavity, and within the height range between the lowest position and the highest position of the liquid outlet, the stop baffle is a closed plate.

Description

[0001] This application claims the priority of a prior application with an application date of December 30, 2021, an application number of 2021234511458, and an invention title of "Liquid Collection Device and Cleaning Equipment". Technical Field

[0002] The present invention belongs to the technical field of cleaning appliances, and particularly relates to a liquid collection device and a cleaning equipment. Background Art

[0003] With the continuous progress of living conditions and technological levels, cleaning equipment has the advantages of being convenient to use and having a good cleaning effect. Therefore, cleaning equipment has gradually begun to replace manual cleaning and widely appears in life and work. During the use of cleaning equipment, when there is sewage on the surface to be cleaned, the cleaning equipment can adsorb the sewage into the interior of the sewage collection tank. The main method is to create a negative pressure inside the sewage collection tank to suck the sewage into the interior of the sewage collection tank.

[0004] However, during the use of current cleaning equipment, when cleaning narrow spaces, the body of the cleaning equipment needs to be switched from an upright state to a lying state for convenient cleaning. In the lying state of existing cleaning equipment, the sewage in the sewage tank will invade the fan along the air inlet channel, resulting in the fan being unable to work properly. As can be seen from the above, existing cleaning equipment cannot achieve flat cleaning operations, greatly limiting the scope of application of cleaning equipment. Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide a liquid collection device and a cleaning equipment that can achieve cleaning operations in a lying state.

[0006] To solve the above technical problems, the present invention provides a liquid collection device, comprising: a box body having a receiving cavity and an exhaust passage communicating with the outside of the box body; a rotating assembly including an impeller provided with an air inlet, the impeller being rotatably disposed in the receiving cavity, and the receiving cavity communicating with the exhaust passage through the air inlet; a liquid inlet mechanism having a liquid outlet, the liquid outlet communicating with the receiving cavity; a stop structure disposed in the receiving cavity, the stop structure including a stop plate located between the liquid outlet and the impeller; wherein, the box body includes a first side wall and a second side wall arranged opposite to each other, the distance between the liquid inlet mechanism and the first side wall is greater than the distance between the liquid inlet mechanism and the second side wall; the liquid collection device has a lying state in which the first side wall is below the second side wall, when the liquid collection device is in the lying state, the air inlet is higher than the highest water level distribution of the receiving cavity, within the height range between the lowest position and the highest position of the liquid outlet, the stop plate is a closed plate, and the center line of the liquid inlet mechanism is higher than the center line of the box body.

[0007] Preferably, the liquid inlet mechanism has a suspended end suspended in the receiving cavity, and the liquid outlet is formed on the suspended end.

[0008] Preferably, the liquid inlet mechanism is a tubular member, and the liquid inlet mechanism extends along the longitudinal length direction of the box body.

[0009] Preferably, along the extending direction of the center line of the liquid inlet mechanism, the liquid outlet and the stop plate are spaced apart, and the stop plate is distributed substantially perpendicular to the side wall of the box body, so that the fluid ejected through the liquid outlet flows out towards the first side wall and / or the second side wall.

[0010] Preferably, there is a space between the stop plate and the side wall of the box body to form a flow channel for gas to flow through.

[0011] Preferably, the stop structure further includes a sleeve disposed in the receiving cavity and surrounding the outer periphery of the liquid inlet mechanism, the sleeve being located on the side of the stop plate away from the impeller; wherein, an opening facing the side wall of the box body is provided on the side wall of the sleeve.

[0012] Preferably, the exhaust passage forms an exhaust port at the top of the box body, and the impeller extends into the receiving cavity through the exhaust port.

[0013] Preferably, a stepped portion protruding towards the second side wall is formed at the top of the first side wall, the exhaust passage forms the exhaust port on the stepped portion, and the impeller is removably disposed in the receiving cavity through the exhaust port.

[0014] Preferably, the rotating assembly includes the impeller and a driving member, wherein the driving member is connected to the impeller to drive the impeller to rotate in the accommodating cavity.

[0015] The present invention also provides a cleaning device, comprising: a body with a negative pressure generator disposed therein; a liquid collection device detachably disposed on the body; wherein the negative pressure generator is communicated with the exhaust passage of the box body, and the liquid collection device is the liquid collection device as described above.

[0016] The technical solution provided by the present invention has the following advantages:

[0017] 1. When the liquid collection device is in a lying state, the air inlet is higher than the highest water level distribution of the accommodating cavity. Thus, the liquid medium in the accommodating cavity cannot enter the exhaust passage through the air inlet, and the liquid medium cannot enter the negative pressure generator of the floor washer, so that the cleaning operation when the floor washer is lying can be realized.

[0018] 2. Within the height range between the lowest position and the highest position of the liquid outlet, the stop baffle is a closed plate. When the fluid enters the accommodating cavity through the liquid inlet mechanism, part of the fluid ejected from the liquid outlet will impact on the stop baffle. Since the stop baffle is a closed plate at the height and area of the liquid outlet, the fluid cannot flow further towards the impeller, and the fluid has a movement tendency to flow away from the impeller under the blocking action of the stop baffle; thus, the liquid medium and the solid medium will not be directly ejected to the impeller, which is beneficial to the smooth gas-liquid separation operation of the impeller and can effectively prevent the liquid in the accommodating cavity from being sucked into the exhaust passage.

[0019] 3. The center line of the liquid inlet mechanism is higher than the center line of the box body. Thus, when the liquid collection device is in a lying state, there is a large accommodating space between the liquid inlet mechanism and the first side wall, effectively improving the dirt-containing capacity of the accommodating cavity when the liquid collection device is in a lying state, avoiding frequent dumping of the dirt in the accommodating cavity, and having the advantage of convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the cleaning device provided by the present invention;

[0021] Figure 2 is Figure 1 exploded structural diagram of;

[0022] Figure 3 is a schematic internal structural diagram of the liquid collection device provided by the present invention when it is vertical;

[0023] Figure 4 is a schematic internal structural diagram of the liquid collection device provided by the present invention when it is lying;

[0024] Figure 5 Structural schematic diagram of the box body in the present invention;

[0025] Figure 6 Structural schematic diagram of the impeller in the present invention;

[0026] Figure 7 Exploded schematic diagram between the output shaft and the impeller in the present invention;

[0027] Figure 8 Schematic diagram of the blocking structure in the present invention;

[0028] Figure 9 Three-dimensional structural schematic diagram of the rotating assembly in the accommodating cavity of the box body in the present invention;

[0029] Figure 10 Internal structural schematic diagram of the rotating assembly in the accommodating cavity of the box body in the present invention. Detailed implementation manners

[0030] Terms such as "first", "second", etc. in the description, claims and above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence.

[0031] In the present invention, unless otherwise stated, orientation terms such as "upper", "lower", "top", "bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms do not limit the present invention.

[0032] Embodiment 1

[0033] Please refer to Figures 1 to 8 As shown, the present invention provides a liquid collection device. In an application scenario, the liquid collection device is the sewage tank of a handheld floor washer, and is used to hold the dirt generated when cleaning the floor.

[0034] It should be noted that the liquid collection device described in the above example as the sewage tank of the floor washer is only a feasible application scenario of the liquid collection device. In other feasible scenarios that cannot be explicitly excluded, the liquid collection device can also be used on other cleaning devices that require lying flat.

[0035] The following will mainly take the liquid collection device used for a handheld floor washer as an example for elaboration, and the handheld floor washer will be simply referred to as the floor washer in the following text. However, based on the above description, it can be known that the protection scope of the embodiments of the present invention is not limited thereby.

[0036] Existing floor washing machines cannot achieve flat cleaning for the following reasons. When the floor washing machine is cleaning in relatively low environments such as under the sofa or under the bed, it is necessary to lower the body of the floor washing machine so that the body is close to the ground, enabling the floor brush of the floor washing machine to reach under the sofa or under the bed. However, during the process of the body approaching the ground, the sewage tank will follow the body and approach the ground synchronously. In the above situation, the sewage in the sewage tank will invade the negative pressure generator, thus affecting the normal operation of the negative pressure generator.

[0037] In view of the fact that the sewage tank of the existing floor washing machine cannot meet the requirements of flat cleaning, the present invention provides the liquid collection device. Please refer to Figure 3 and Figure 4 As shown, the liquid collection device includes a box body 100, a rotating assembly, and a liquid inlet mechanism 200. The box body 100 has a receiving cavity 110 and an exhaust passage (not shown in the figure) communicating with the outside of the box body 100. Among them, the exhaust passage communicates the air inlet end of the negative pressure generator (not shown in the figure) with the receiving cavity 110. The receiving cavity 110 is used to hold dirt, and the above-mentioned dirt includes solid media and liquid media.

[0038] The liquid inlet mechanism 200 is communicated with the dirt suction port (not shown in the figure) of the floor brush (not shown in the figure) of the floor washing machine. When the floor washing machine is working, a suction air flow is formed between the negative pressure generator and the dirt suction port. The receiving cavity 110 and the dirt suction port are in a negative pressure state. The solid media and liquid media on the ground enter the receiving cavity 110 under the action of the suction air flow after passing through the dirt suction port.

[0039] In this embodiment, the liquid inlet mechanism 200 is a tubular member, preferably a straight pipe. Among them, the liquid inlet mechanism 200 extends along the longitudinal direction of the box body 100. The above-mentioned "longitudinal direction" refers to the extending direction of the body of the floor washing machine, and can also be understood as the direction from the floor brush of the floor washing machine to the handle.

[0040] Please continue to refer to Figure 3 As shown, the liquid inlet mechanism 200 has a suspended end 212 suspended in the receiving cavity 110, and a liquid outlet 210 is formed on the suspended end 212. The liquid outlet 210 is located inside the box body 100 and communicates with the receiving cavity 110. Thus, the solid media and liquid media sucked through the dirt suction port can enter the receiving cavity 110 through the liquid outlet 210.

[0041] Regarding the position of the liquid inlet mechanism 200, in one case, the liquid inlet mechanism 200 is completely disposed in the receiving cavity 110; in another case, a part of the liquid inlet mechanism 200 can be located inside the receiving cavity 110 and another part can be located outside the receiving cavity 110. The following mainly takes the case where the liquid inlet mechanism 200 is completely disposed in the receiving cavity 110 as an example for elaboration, but the protection scope of the embodiments of the present invention is not limited thereby.

[0042] The liquid inlet mechanism 200 also has a fixed end 211, which is fixed on the wall of the accommodation chamber 110 and communicates with the sewage suction port. Among them, the fixed end 211 communicates with the suspended end 212 to form a sewage inlet passage.

[0043] The rotating assembly is used for gas-liquid separation of the box body 100 to prevent the suction air flow from bringing the liquid medium in the accommodation chamber 110 into the negative pressure generator, which affects the normal operation of the negative pressure generator. Please continue to refer to Figure 3 and Figure 4 As shown, the rotating assembly includes an impeller 400 and a driving member 500. Among them, the impeller 400 is located in the accommodation chamber 110, and the driving member 500 is connected to the impeller 400 to drive the impeller 400 to rotate in the accommodation chamber 110. That is to say, the impeller 400 is rotatably arranged in the accommodation chamber 110, and gas-liquid separation is realized by means of the centrifugal force generated by the rotational motion of the impeller 400.

[0044] Regarding the installation of the impeller 400, please refer to Figure 5 As shown, the exhaust passage forms an exhaust port 120 at the top of the box body 100, and the impeller 400 extends into the accommodation chamber 110 through the exhaust port 120. That is to say, the impeller 400 is inserted into the accommodation chamber 110 through the exhaust port 120, and the exhaust port 120 can be regarded as an avoidance port for installing the above-mentioned impeller 400.

[0045] Please refer to Figure 6 As shown, the impeller 400 is provided with an air inlet 430, and the accommodation chamber 110 of the box body 100 communicates with the exhaust passage through the air inlet 430. In this embodiment, the gas in the accommodation chamber 110 can enter the exhaust passage only after passing through the air inlet 430. That is to say, the gas in the accommodation chamber 110 of the box body 100 can only enter the exhaust passage through the air inlet 430 of the impeller 400.

[0046] Specifically, the air inlet 430 of the impeller 400 is arranged along the circumferential direction of the impeller 400, and a plurality of spaced gratings are arranged on the side surface of the impeller 400, and the air inlet 430 is formed between two adjacent gratings. Of course, the air inlet 430 is not limited to the structure formed by the gratings, and other structures can also be used as long as the effect of water-vapor separation can be achieved through rotation.

[0047] Please refer to Figure 7 As shown, the driving member 500 has an output shaft 510, and the output shaft 510 is connected to the impeller 400 to drive the impeller 400 to rotate. The driving member 500 can be a motor or other structural members such as a cylinder that can provide rotational power output.

[0048] Specifically, when the driving member 500 drives the impeller 400 to rotate, the gas in the accommodating cavity 110 enters through the air inlet 430 of the impeller 400 and flows towards the exhaust passage. When the liquid medium mixed in the airflow flows towards the impeller 400, the rotating impeller 400 throws the liquid medium onto the cavity wall of the accommodating cavity 110 under the action of centrifugal force, and the thrown liquid medium is stored inside the box body 100 under the action of gravity.

[0049] In this embodiment, please continue to refer to Figure 4 As shown, the box body 100 includes a first side wall 101 and a second side wall 102 which are oppositely arranged, and the output shaft 510 of the driving member 500 extends towards the second side wall 102. Among them, the distance between the liquid inlet mechanism 200 and the first side wall 101 is greater than the distance between the liquid inlet mechanism 200 and the second side wall 102.

[0050] The liquid collection device has the following two states during operation: The first state is the normal working state. At this time, the liquid collection device is inclined relative to the ground, and the inclination angle of the liquid collection device relative to the ground is greater than 10°. The first side wall 101 and the second side wall 102 are respectively located on the left and right sides of the liquid inlet mechanism 200, or on the front and rear sides of the liquid inlet mechanism 200. The second state is the lying state. At this time, the first side wall 101 is located below the second side wall 102, that is to say, the first side wall 101 and the second side wall 102 are respectively located on the upper and lower sides of the liquid inlet mechanism 200.

[0051] When the liquid collection device is in the lying state, the liquid collection device is substantially parallel to the ground. At this time, the body of the floor washer is close to the ground, and the floor brush of the floor washer can extend into low environments such as under low sofas and under beds. It should be noted that in this specification, "substantially" or "basically" can be understood as close to, approximate, or within a predetermined range of the target value.

[0052] In this embodiment, the surface of the first side wall 101 is a plane, the surface of the second side wall 102 is an arc surface, and the distance from the liquid inlet mechanism 200 to the apex of the arc surface is less than the distance from the liquid inlet mechanism 200 to the plane.

[0053] Of course, the first side wall 101 is not limited to a plane and can also be an arc surface structure. When the surface of the first side wall 101 is an arc surface, the distance from the liquid inlet mechanism 200 to the apex of the arc of the first side wall 101 is greater than the distance between the liquid inlet mechanism 200 and the second side wall 102. The surface of the second side wall 102 is not limited to an arc surface and can also be a plane, specifically to make the liquid inlet mechanism 200 close to the second side wall 102 to improve the liquid storage capacity of the box body 100 when the liquid collection device is in the lying state.

[0054] In this embodiment, when the liquid collection device is in a lying state, the air inlet 430 is higher than the highest water level distribution of the accommodation cavity 110. Thus, the liquid medium in the accommodation cavity 110 cannot enter the exhaust passage through the air inlet 430, and the liquid medium cannot enter the negative pressure generator, thereby enabling the cleaning operation when the floor washer is lying flat.

[0055] Furthermore, a stepped portion 104 protruding towards the second side wall 102 is formed at the top of the first side wall 101, and the exhaust port 120 is formed on the stepped portion 104 of the exhaust passage. The impeller 400 is removably disposed in the accommodation cavity 110 through the exhaust port 120. In this embodiment, by providing the stepped portion 104, the driving member 500 and the impeller 400 can have a preset installation height. Thus, when the liquid collection device is in a lying state, the liquid medium inside the box body 100 can be prevented from invading the negative pressure generator.

[0056] The liquid collection device further includes a stop structure, and the stop structure is disposed in the accommodation cavity 110. Please refer to Figure 4 and combine with Figure 8 as shown. The stop structure includes a stop plate 302, and the stop plate 302 is located between the liquid outlet 210 and the impeller 400. The stop plate 302 is used to prevent the fluid ejected from the liquid outlet 210 from splashing onto the impeller 400, thereby affecting the gas-liquid separation effect of the impeller 400. The "fluid" in the above "the fluid ejected from the liquid outlet 210 splashes onto the impeller 400" includes solid medium and liquid medium.

[0057] Specifically, in the extending direction of the center line of the liquid inlet mechanism 200, the liquid outlet 210 and the stop plate 302 are spaced apart. The stop plate 302 is spaced apart from the side wall of the box body 100 to form a flow channel for gas to flow through. The stop plate 302 is distributed substantially perpendicular to the side wall of the box body 100 so that the fluid ejected from the liquid outlet 210 flows towards the side wall of the box body 100. Among them, the center line of the liquid inlet mechanism 200 refers to the center line of the liquid inlet mechanism 200. In this embodiment, the liquid inlet mechanism 200 is in a circular tube shape, and the center line is the center line M of the circular tube.

[0058] The above "the fluid ejected from the liquid outlet 210 flows towards the side wall of the box body 100" has the following several situations: the first situation is that the fluid ejected from the liquid outlet 210 flows towards the first side wall 101; the second situation is that the fluid ejected from the liquid outlet 210 flows towards the second side wall 102; the third situation is that the fluid ejected from the liquid outlet 210 flows towards both the first side wall 101 and the second side wall 102.

[0059] In this embodiment, when the liquid collection device is in a lying state, within the height range between the lowest position and the highest position of the liquid outlet 210, the stop baffle 302 is a closed plate, and the center line M of the liquid outlet 210 is higher than the center line N of the box body 100. Among them, the areas of the stop baffle 302 located below the lowest position of the liquid outlet 210 and above the highest position of the liquid outlet 210 can be either closed plates or perforated plates. The above-mentioned "perforated plate" can be understood as having through holes (not shown in the figure) in the areas of the stop baffle 302 located below the lowest position of the liquid outlet 210 and above the highest position of the liquid outlet 210.

[0060] When the fluid enters the accommodation cavity 110 through the liquid inlet mechanism 200, a part of the fluid ejected from the liquid outlet 210 will impact on the stop baffle 302. Since the stop baffle 302 is a closed plate within the height and area of the liquid outlet 210, the fluid cannot flow further towards the impeller 400, and the fluid has a movement trend of flowing away from the impeller 400 under the blocking effect of the stop baffle 302. Thus, the liquid medium and the solid medium will not be directly ejected to the impeller 400, which is beneficial to the smooth gas-liquid separation operation of the impeller 400, and can also effectively prevent the liquid in the accommodation cavity 110 from being sucked into the exhaust passage.

[0061] Regarding the "center line N of the box body 100", the box body 100 has a symmetry plane Q-Q, the first side wall 101 is symmetric about the symmetry plane Q-Q, and the second side wall 102 is symmetric about the symmetry plane Q-Q. When the liquid collection device is in a lying state, the low position of the box body 100 is located at the intersection of the first side wall 101 and the symmetry plane Q-Q, and the high position of the box body 100 is located at the intersection of the second side wall 102 and the symmetry plane Q-Q. In this embodiment, the above-mentioned low position can be understood as the lowest position of the box body 100, and the above-mentioned high position can be understood as the highest position of the box body 100. The above-mentioned "center line of the box body 100" is an imaginary line on the symmetry plane Q-Q where the distance to the high position is equal to the distance to the low position.

[0062] In this embodiment, since the distance between the liquid inlet mechanism 200 and the first side wall 101 is greater than the distance between the liquid inlet mechanism 200 and the second side wall 102, the center line M of the liquid inlet mechanism 200 is higher than the center line of the box body 100. Thus, when the liquid collection device is in a lying state, there is a larger accommodation space between the liquid inlet mechanism 200 and the first side wall 101, effectively improving the dirt holding capacity of the accommodation cavity 110 when the liquid collection device is in a lying state, avoiding frequent dumping of the dirt in the accommodation cavity 110, and having the advantage of convenient use.

[0063] Further, please refer to Figure 8As shown, the stop structure further includes a sleeve 301 disposed in the accommodation cavity 110 and surrounding the outer periphery of the liquid inlet mechanism 200. The sleeve 301 is located on the side of the stop plate 302 away from the impeller 400. Among them, an opening 303 is provided on the side wall of the sleeve 301 and distributed towards the side wall of the box body 100.

[0064] The opening 303 is arranged at a first angle with respect to the extending direction of the liquid inlet mechanism 200, and the first angle is greater than 30° and less than 150°. For example, the value of the first angle can be values such as 30°, 60°, 90°, 120°, 150°, etc., or it can be an increase with an interval unit of 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10° between 30° and 150°. In this embodiment, the first angle is preferably set to 90°.

[0065] Regarding the setting form between the sleeve 301 and the stop plate 302, in one setting form, please continue to refer to Figure 8 As shown, the sleeve 301 is disposed on the end face of the stop plate 302 close to the liquid outlet 210 side, and the stop plate 302 is disposed at the suspended end 212 through the sleeve 301. The fluid ejected from the liquid outlet 210 flows into the accommodation cavity 110 through the opening 303 on the side wall of the sleeve 301.

[0066] The flow direction of the fluid at the opening 303 is closely related to the orientation of the opening 303. In this embodiment, the opening 303 of the sleeve 301 can face the first side wall 101, or can face the second side wall 102, or can also face the first side wall 101 and the second side wall 102 simultaneously. When the opening 303 of the sleeve 301 faces the first side wall 101, the fluid discharged from the liquid inlet mechanism 200 flows out towards the first side wall 101. Similarly, when the opening 303 of the sleeve 301 faces the second side wall 102, the fluid discharged from the liquid inlet mechanism 200 flows out towards the first side wall 101; when the opening 303 of the sleeve 301 faces the first side wall 101 and the second side wall 102 simultaneously, the fluid discharged from the liquid inlet mechanism 200 flows out towards the first side wall 101 and the second side wall 102 simultaneously.

[0067] Now, taking the opening 303 facing the first side wall 101 as an example for illustration. Specifically, the sleeve 301 and the stop plate 302 cooperate to form a liquid inlet channel. The fluid entering the inside of the liquid inlet mechanism 200 flows towards the stop plate 302. The stop plate 302 stops the fluid so that the fluid can only flow out through the opening 303. When the liquid collection device is in a lying state, the fluid flows towards the first side wall 101 under the action of gravity through the opening 303 and is stored in the accommodation cavity 110 of the box body 100; when the liquid collection device is not in a lying state (normal working state), the fluid flows towards the bottom of the accommodation cavity 110 under the action of gravity through the opening 303 and is stored inside the box body 100.

[0068] In another setting form (not shown in the figure), there is no connection relationship between the sleeve 301 and the stop baffle 302. That is to say, the sleeve 301 and the stop baffle 302 are spaced apart in the extending direction of the middle line M. The sleeve 301 is fixedly arranged in the accommodation cavity 110, and the liquid inlet mechanism 200 is disposed through the sleeve 301.

[0069] In this embodiment, a liquid level sensor (not shown in the figure) is further provided in the accommodation cavity 110, and the liquid level sensor is used to sense the liquid level height in the accommodation cavity 110. The above liquid level sensor can sense the highest liquid level in the accommodation cavity 110. However, it should be noted that the liquid level sensor includes but is not limited to sensing the highest liquid level of the accommodation cavity 110, and the liquid level sensor can also be used to sense the real-time liquid level height in the accommodation cavity 110.

[0070] Regardless of whether the liquid collection device is in a normal working state or a lying state, the highest liquid level surface of the accommodation cavity 110 is lower than the air inlet 430. Thus, the liquid medium in the accommodation cavity 110 will not enter the exhaust passage through the air inlet 430.

[0071] In the lying state, the highest liquid level surface of the accommodation cavity 110 is located at the bottom end of the stop baffle 302. That is to say, the bottom end of the stop baffle 302 is the highest liquid level height of the accommodation cavity 110. In this embodiment, when the liquid collection device is in the lying state, the bottom end of the stop baffle 302 is arranged lower than the lowest position of the liquid outlet 210. Thus, when the accommodation cavity 110 is full (when the liquid level height in the accommodation cavity 110 is the highest liquid level height), the liquid medium in the accommodation cavity 110 will not flow back to the ground through the liquid inlet mechanism 200. At the same time, in order to ensure that the accommodation cavity 110 has a predetermined ability to accommodate dirt in the lying state, the bottom end of the stop baffle 302 is infinitely close to the lowest position of the liquid outlet 210. Among them, the bottom end of the stop baffle 302 and the first side wall 101 are spaced apart to allow air flow.

[0072] In this embodiment, by providing a liquid level sensor inside the box body 100, the liquid level sensor detects and feeds back the liquid level of the liquid in real time, avoiding the phenomenon that the liquid collection device cannot work due to excessive liquid causing the liquid inlet mechanism 200 to be immersed in the liquid. When the liquid level of the liquid exceeds the preset liquid level, the liquid level sensor alarms and sends a stop signal to the negative pressure generator, and the liquid collection device stops working.

[0073] Regarding the installation position of the rotating assembly, in one setting form, the rotating assembly can be installed on the machine body 700. Please refer to Figure 2 and Figure 3 As shown, when the rotating assembly is installed on the machine body 700, the driving member 500 is installed on the machine body 700 and is located outside the box body 100, and the impeller 400 is located inside the box body 100.

[0074] In another setting form, the rotating assembly can also be arranged in the accommodating cavity 110 of the box body 100, that is, both the impeller 400 and the driving member 500 are located in the accommodating cavity 110. Please refer to Figure 9 and Figure 10 As shown, the rotating assembly and the box body 100 form an integral body, and the rotating assembly can cooperate or disassemble with the machine body 700 synchronously following the box body 100.

[0075] When the rotating assembly is arranged in the accommodating cavity 110 of the box body 100, please continue to refer to Figure 9 and Figure 10 As shown, at the first end of the accommodating cavity 110 (the right end in Figure 10 , and the above-mentioned right end is the top end of the accommodating cavity 110 when the liquid collection device is in the normal working state), an installation part is provided, and the installation part has an exhaust passage communicating with the outside of the box body 100. Among them, the installation part is arranged at the step part 104.

[0076] Please refer to Figure 10 As shown, a sealing structure is arranged between the impeller 400 and the installation part. The sealing structure can be an O-ring, and the sealing structure can also be a waterproof bearing. Of course, the sealing structure can also be other structural parts, specifically based on the ability to prevent water vapor from entering the inside of the impeller 400 at the installation gap between the impeller 400 and the installation part.

[0077] The accommodating cavity 110 also has a second end 103 distributed opposite to the first end. The above-mentioned "second end 103" is the left end in Figure 10 , and when the liquid collection device is in the normal working state, the second end 103 is the bottom end of the accommodating cavity 110. Among them, the first end can be understood as the first end of the box body, and the second end 103 can be understood as the second end of the box body. In another setting form (not shown in the figure), the output shaft of the driving member 500 extends towards the second end 103 of the box body 100.

[0078] Please refer to Figure 10 As shown, the box body 100 includes a base and a box cover. The box cover is detachably covered on the base. The liquid inlet mechanism 200 extends into the inside of the box body 100 from the base, and the installation part is arranged on the inner surface of the box cover. The exhaust passage penetrates through the box cover and communicates with the outside of the box body 100.

[0079] Embodiment 2

[0080] The present invention also provides a cleaning device. In an application scenario, the cleaning device is a handheld floor washer. It should be noted that the cleaning device being a handheld floor washer in the above example is only a feasible usage scenario, and the cleaning device can also be other cleaning devices with a flat cleaning requirement. The protection scope of the embodiments of the present invention is not limited thereby.

[0081] Please refer to Figures 1 to 4 As shown, the cleaning device includes: a body 700 with a negative pressure generator 710 inside, a handle (not shown in the figure) connected above the body 700, and a floor brush (not shown in the figure) connected below the body 700. A liquid collection device is detachably provided on the body 700, and the liquid collection device is the liquid collection device described in Embodiment 1. The floor brush is provided with a dirt suction port for sucking dirt on the ground, and the dirt suction port is communicated with the liquid collection device, and the liquid collection device is used to accommodate the dirt sucked through the dirt suction port. The negative pressure generator 710 is communicated with the exhaust passage of the box body 100. Among them, the negative pressure generator 710 can be a blower or a vacuum pump.

[0082] The handle is provided with a control unit for controlling the operation of the whole machine. When the user drives the negative pressure generator 710 to work through the control unit, the gas inside the box body 100 is evacuated so that the accommodation cavity 110 maintains a negative pressure state. The box body 100 in the negative pressure state can adsorb the liquid medium and solid medium on the ground. Thus, the liquid medium, solid medium and air enter the accommodation cavity 110 of the box body 100 together. The liquid medium and solid medium fall into the accommodation cavity 110 under the action of gravity. Part of the liquid flows towards the impeller 400 along with the gas. The rotating impeller 400 blocks the liquid, and the gas enters the inside of the impeller 400 from the air inlet 430 and flows out of the box body 100 through the exhaust passage.

[0083] When the liquid collection device is installed on the body 700, the box body 100 is connected to the body 700, and the box body 100 forms a part of the outer shell of the body 700; when the liquid collection device is detached from the body 700, the box body 100 is separated from the body 700, and the body 700 is provided with a recessed area that cooperates with the box body 100.

[0084] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0085] 1. A shielding structure is provided on the liquid inlet mechanism 200 so that the liquid medium and solid medium flowing through the liquid inlet mechanism 200 flow towards the side wall of the box body 100 under the action of the shielding structure, so as to prevent the liquid medium and solid medium from directly flowing towards the rotating assembly from the liquid inlet mechanism 200, thereby avoiding the phenomenon that the liquid medium and solid medium are sucked into the inside of the rotating assembly. By providing the shielding structure, the collection efficiency of the liquid collection device for collecting sewage is improved, the cleaning efficiency of the cleaning device is improved, and the user experience is enhanced.

[0086] 2. The distance between the liquid inlet mechanism 200 and the first side wall 101 is greater than the distance between the liquid inlet mechanism 200 and the second side wall 102, so that a large amount of liquid can be collected when the liquid collection device is in a lying state, and the use efficiency of the liquid collection device is improved.

[0087] 3. By using the impeller 400 to achieve water-vapor separation, it is possible to avoid the reduction of the cleaning efficiency caused by the liquid discharging from the box body 100.

Claims

1. A liquid collection device is installed on the body of a cleaning device, characterized in that, Comprising: A box body having a receiving cavity and an exhaust passage communicating with the outside of the box body; A rotating assembly including an impeller provided with an air inlet and a driving member. The impeller is rotatably disposed in the receiving cavity. The receiving cavity communicates with the exhaust passage through the air inlet. The exhaust passage forms an exhaust port at the top of the box body. The impeller extends into the receiving cavity through the exhaust port and is removably disposed in the receiving cavity through the exhaust port. The driving member is disposed on the machine body and located outside the box body. The driving member is connected to the impeller to drive the impeller to rotate in the receiving cavity; A liquid inlet mechanism having a liquid outlet, and the liquid outlet communicates with the receiving cavity; A stop structure disposed in the receiving cavity, and the stop structure includes a stop plate located between the liquid outlet and the impeller; Wherein, the box body includes a first side wall and a second side wall arranged oppositely, and the distance between the liquid inlet mechanism and the first side wall is greater than the distance between the liquid inlet mechanism and the second side wall; The liquid collection device has a lying state where the first side wall is below the second side wall. When the liquid collection device is in the lying state, the air inlet is higher than the highest water level distribution of the receiving cavity. Within the height range between the lowest position and the highest position of the liquid outlet, the stop plate is a closed plate, and the center line of the liquid inlet mechanism is higher than the center line of the box body.

2. The liquid collection device according to claim 1, wherein The liquid inlet mechanism has a suspended end suspended in the receiving cavity, and the liquid outlet is formed on the suspended end.

3. The liquid collection device according to claim 1, wherein The liquid inlet mechanism is a tubular member, and the liquid inlet mechanism extends along the longitudinal length direction of the box body.

4. The liquid collection device according to claim 1, wherein In the extending direction of the center line of the liquid inlet mechanism, the liquid outlet and the stop plate are spaced apart, and the stop plate is distributed substantially perpendicular to the side wall of the box body, so that the fluid ejected through the liquid outlet flows out towards the first side wall and / or the second side wall.

5. The liquid collection device according to claim 1, wherein The stop plate is spaced apart from the side wall of the box body to form a flow channel for gas circulation.

6. The liquid collection device according to claim 1, wherein The stop structure further includes a sleeve disposed in the receiving cavity and surrounding the outer periphery of the liquid inlet mechanism, and the sleeve is located on the side of the stop plate away from the impeller; Wherein, an opening facing the side wall of the box body is provided on the side wall of the sleeve.

7. The liquid collection device according to claim 1, wherein A stepped portion protruding towards the second side wall is formed at the top of the first side wall, and the exhaust port is formed on the stepped portion of the exhaust passage. The impeller is removably disposed in the receiving cavity through the exhaust port.

8. A cleaning device, characterized in that, Comprising: A machine body internally provided with a negative pressure generator; A liquid collection device detachably disposed on the machine body; Wherein, the negative pressure generator is communicated with the exhaust passage of the box body, and the liquid collection device is the liquid collection device according to any one of claims 1 to 7.

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