Cleaning device

Abstract

The invention relates to cleaning equipment which comprises a floor brush assembly, and the floor brush assembly comprises a floor brush shell, a rolling brush and a liquid outlet assembly. The rolling brush is rotationally connected to the floor brush shell and is configured to be used for cleaning the working face. The liquid outlet assembly is arranged on the floor brush shell; the liquid outlet assembly comprises a liquid outlet plate, a liquid inlet and a liquid outlet which are formed in the liquid outlet plate, and a liquid flow channel for communicating the liquid inlet with the liquid outlet; the liquid flow channel comprises at least two stages of shunting channels which are positioned at different heights and are communicated in sequence; a steering buffer area is arranged at the communicating position of every two adjacent stages of flow dividing channels, and liquid is configured to flow into the flow dividing channel of the next stage after the flowing direction of the liquid is converted at least twice in the steering buffer areas. According to the liquid outlet assembly, flow division in the liquid outlet assembly is more uniform, even under the low-flow condition, all the liquid outlets of the liquid outlet assembly can keep the basically uniform liquid outlet amount, and the use experience of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cleaning equipment, and in particular to a cleaning equipment. Background Art

[0002] With the development of social productivity, people's living standards have also been improved. On the premise that the material basis is guaranteed, people begin to use a variety of tools to reduce labor and improve the quality of life, and household cleaning equipment comes into being.

[0003] For floor scrubbers, under low flow conditions, traditional floor scrubbers often have uneven water spraying, which results in different water contents at different points on the roller brush. In the cleaning area where the roller brush moves, the points with high water content on the roller brush will leave a wet water mark on the ground, resulting in uneven distribution of water marks on the ground, which in turn affects the drying speed of the ground. This not only affects the cleaning effect of the ground, but may also cause safety hazards, such as slippery ground may cause people to slip. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present disclosure provides a cleaning device.

[0005] According to a first aspect of the present disclosure, there is provided a cleaning device, including a floor brush assembly, the floor brush assembly comprising: Floor brush housing; A roller brush is rotatably connected to the floor brush housing and is configured to clean the working surface; A liquid outlet assembly is arranged on the floor brush housing; the liquid outlet assembly comprises a liquid outlet plate, a liquid inlet and a liquid outlet arranged on the liquid outlet plate, and a liquid flow channel connecting the liquid inlet and the liquid outlet; Wherein, the liquid flow channel includes at least two levels of diversion channels located at different heights and connected in sequence, and the liquid flows in two different directions when flowing into the diversion channels; a steering buffer zone is provided at the position where the two adjacent levels of diversion channels are connected, and the liquid is configured to change the flow direction at least twice in the steering buffer zone and then flow into the diversion channel of the next level.

[0006] One beneficial effect of the present disclosure is that a steering buffer zone is provided at the position where two adjacent levels of diversion channels are connected, and the liquid from the upper level diversion channel can change its flow direction at least twice in the steering buffer zone before flowing into the lower level diversion channel. Specifically, during the step-by-step diversion process, the liquid will first change its flow direction in the steering buffer zone before each diversion, thereby reducing the kinetic energy of the liquid and eliminating the flow inertia of the liquid in the upper level diversion channel. The liquid in the steering buffer zone can flow into the lower level diversion channel basically evenly, thereby reducing the flow difference during diversion. The present disclosure makes the diversion in the liquid outlet component more uniform, and even under low flow conditions, each liquid outlet of the liquid outlet component can maintain a basically uniform liquid output, thereby improving the user experience.

[0007] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0009] Figure 1 is a cross-sectional view of a brush assembly of the present disclosure; Figure 2 yes Figure 1 A partial enlarged view of the position of the middle liquid outlet plate; Figure 3 is a structural exploded diagram of the liquid outlet plate disclosed in the present invention; Figure 4 is a cross-sectional view of the liquid outlet plate disclosed herein; Figure 5 yes Figure 4 A partial enlarged view of point C in the middle; Figure 6 yes Figure 4 A partial enlarged view of point B in the middle; Figure 7 yes Figure 4 A partial enlarged view of the middle A; Figure 8 It is an enlarged view of the local structure of the liquid outlet plate disclosed in the present invention; Fig. 9 is a front view of the liquid outlet plate disclosed in the present invention; Fig.10 It is a schematic diagram of the structure of the liquid outlet plate and the dirt scraping plate disclosed in the present invention; Fig.11 yes Fig.10 A partial enlarged view of point D in the middle; Fig.12 This is a graph showing the results of the roller brush segmented humidity test of the control group in the second embodiment of the present disclosure; Fig.13This is a graph showing the results of the roller brush segmented humidity test in the experimental group of the second embodiment of the present disclosure; Fig.14 This is a graph showing the flow rate test results of the liquid outlet of the control group in Example 2 of the present disclosure; Fig.15 This is a test result diagram of the flow rate of the liquid outlet of the experimental group in the second embodiment of the present disclosure; Fig.16 It is a cross-sectional view of a liquid outlet plate in the prior art.

[0010] Figures 1 to 16 The one-to-one correspondence between the component names and the reference numerals is as follows: 1. Floor brush housing; 11. Traveling wheel; 2. Roller brush; 3. Liquid outlet plate; 31. Liquid inlet; 32. Liquid outlet; 33. Liquid flow channel; 331. First-stage diversion channel; 332. Second-stage diversion channel; 333. Third-stage diversion channel; 334. Connecting channel; 34. Steering buffer zone; 341. First buffer zone; 342. Second buffer zone; 343. Liquid inlet buffer zone; 344. Liquid storage zone; 345. Steering channel; 3451. First guide rib; 3452. Second guide rib; 35. Blocking wall; 351. Liquid buffer zone; 36. Liquid separation section; 370. Guide point; 371. Guide surface; 372. Guide rib; 38. Separation rib; 4. Scraping plate; 41. Exposed area; 5. Sewage suction port. DETAILED DESCRIPTION

[0011] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0012] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0013] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0014] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0015] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0016] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the premise of each other's existence.

[0017] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0018] Embodiment 1 The present disclosure provides a cleaning device, which can be a handheld cleaning device, such as a handheld cleaning machine, a handheld wet vacuum cleaner, a handheld floor scrubber, a handheld fabric cleaning machine, and other handheld cleaning devices known to those skilled in the art, or a floor scrubber robot, a sweeping and mopping robot, and other self-propelled cleaning devices known to those skilled in the art. This embodiment takes the cleaning device as a handheld floor scrubber as an example, and the cleaning device includes a handheld portion (not shown in the figure), a body (not shown in the figure), and a floor brush assembly connected to the bottom of the body. Specifically, the floor brush assembly is rotatably connected to the body, such as Figure 1 As shown, when the cleaning device is parked on the work surface or is cleaning the work surface, the floor brush assembly keeps in contact with the work surface. When the cleaning device is turned on, the user holds the handheld part to tilt the body and pushes and pulls it back and forth, and the floor brush assembly moves on the work surface to clean the dirt on the work surface; when the user holds the handheld part to make the body upright, the cleaning device stops working.

[0019] refer to Figure 1 The floor brush assembly includes a floor brush housing 1, a roller brush 2, and a liquid outlet assembly. The roller brush 2 is rotatably connected to the floor brush housing 1 and is configured to clean the working surface. Cleaning cotton, roller brush fluff, or other cleaning parts for cleaning may be provided on the outer surface of the roller brush 2. The rotation axis of the roller brush 2 is parallel to the working surface. During normal operation, the roller brush 2 can move along the Figure 1 The arrows in the figure indicate the direction (ref. Figure 1 The roller brush 2 can wet-mop the working surface with water during the rotation process. Figure 1 As shown, the roller brush 2 can be rotatably connected to one side of the floor brush housing 1, and a traveling wheel 11 can be provided on the other side thereof. The traveling wheel 11 is rotated by the user applying a forward or backward pushing force, or when the cleaning device disclosed in the present invention is a cleaning robot, the traveling wheel 11 rotates under the action of its own driving force to allow the cleaning device to walk on the work surface.

[0020] The liquid outlet assembly is arranged on the floor brush housing 1, refer to Figure 2 and Figure 3The liquid outlet assembly includes a liquid outlet plate 3, a liquid inlet 31 and a liquid outlet 32 ​​arranged on the liquid outlet plate 3, and a liquid flow channel 33 connecting the liquid inlet 31 and the liquid outlet 32. The liquid outlet plate 3 is configured to provide a cleaning medium to the roller brush 2, so that the cleaning device can wet-mop the work surface when performing cleaning work. The cleaning medium can be clean water or a disinfectant liquid configured to an appropriate concentration, etc., which is not limited by the present disclosure. A clean water tank and / or a cleaning liquid tank can be provided on the floor brush assembly. The liquid inlet 31 of the liquid outlet plate 3 can be connected to the outlet of the clean water tank and / or the cleaning liquid tank. The cleaning medium enters the liquid outlet plate 3 through the liquid inlet 31 and flows to the liquid outlet 32 ​​through the liquid flow channel 33. The liquid outlet 32 ​​can be configured to face the roller brush 2, thereby providing the roller brush 2 with a cleaning medium.

[0021] refer to Figure 4 , the liquid flow channel 33 includes at least two levels of shunt channels located at different heights and connected in sequence, wherein the shunt channel located at the most upstream position is constructed to be connected to the liquid inlet 31, and a plurality of liquid outlets 32 are provided, and the plurality of shunt channels located at the most downstream position are constructed to be connected to the plurality of liquid outlets 32 respectively. In one embodiment of the present disclosure, the most upstream position may be the highest position, and the most downstream position may be the lowest position, so that the cleaning liquid can flow downward naturally under the action of gravity, thereby realizing step-by-step diversion. The cleaning liquid flows into the most upstream shunt channel through the liquid inlet 31, and is diverted downward step by step to flow out from the plurality of liquid outlets 32. It should be noted that each shunt channel located relatively upstream is connected to at least two next-level shunt channels, so as to be able to play the function of diversion, and the waterway that is only connected to a single shunt channel does not belong to the shunt channel referred to in the present disclosure. That is to say, the diversion channel refers to a channel in which liquid flows in two opposite directions after flowing into the channel. Since the liquid flows in two different directions in the channel, the diversion channel can play a diversion function.

[0022] In one embodiment of the present disclosure, reference Figure 4 and Figure 5 The liquid flow channel 33 includes at least three levels of branch flow channels, which are sequentially recorded as the first-level branch flow channel 331, the second-level branch flow channel 332 and the third-level branch flow channel 333 in the direction from the liquid inlet 31 to the liquid outlet 32. Figure 4 In the viewing direction, the liquid flow channel 33 is respectively a first-stage flow channel 331, a second-stage flow channel 332 and a third-stage flow channel 333 from top to bottom, and each stage of the flow channel is configured to extend along the axial direction of the roller brush 2. Figure 4As shown, the first-stage flow channel 331 and the second-stage flow channel 332 have a projection overlap in the height direction, and the two-stage flow channels can share a partition wall; similarly, the second-stage flow channel 332 and the third-stage flow channel 333 also have a projection overlap in the height direction, and the two-stage flow channels can also share a partition wall. In this way, the space occupied by the flow channel wall of the three-stage flow channel is reduced, and the size of the liquid outlet plate 3 in the height direction is reduced.

[0023] like Figure 5 As shown, the liquid flow channel 33 also includes a connecting channel 334 for connecting the liquid inlet 31 with the first-stage diverter channel 331, and the connecting channel 334 is constructed to be lower than the first-stage diverter channel 331. It should be noted that the connecting channel 334 is directly connected to the liquid inlet 31, so it is the most upstream channel, and the downstream of the connecting channel 334 is connected to the first-stage diverter channel 331; however, since the connecting channel 334 is only used to connect a lower-stage channel, the liquid only flows in a single direction in the connecting channel 334, so the connecting channel 334 itself does not have a diverter function. It can be seen that the connecting channel 334 does not belong to the diverter channel referred to in the present disclosure. The diverter channel in this embodiment only includes the first-stage diverter channel 331, the second-stage diverter channel 332 and the third-stage diverter channel 333. The connecting channel 334 is connected to the middle position of the first-stage branch flow channel 331 , so that the cleaning liquid flowing into the connecting channel 334 through the liquid inlet 31 can enter the first-stage branch flow channel 331 from the middle position.

[0024] like Figure 5 As shown, the liquid inlet 31 and the connecting channel 334 are located in the extension direction of the second-stage branch flow channel 332. In this way, on the one hand, the space of the liquid outlet plate 3 is fully utilized, and there is no need to set up additional expansion space for the liquid inlet 31 above the first-stage branch flow channel 331, thereby reducing the size of the liquid outlet plate 3; on the other hand, the distance between the liquid inlet 31 and the first-stage branch flow channel 331 is reduced, so that the connecting channel 334 has a smaller length, thereby minimizing the energy consumption of the anti-gravity flow of the cleaning medium.

[0025] Continue to refer Figure 4 In the viewing direction, the liquid enters the connecting channel 334 from the liquid inlet 31, flows to the right along the connecting channel 334, and enters the first-stage flow channel 331 upward when it flows to the end. In the first-stage flow channel 331, the liquid flows to the left and right respectively, and when it flows to the ends of both sides, the liquid flows into the second-stage flow channel 332. Figure 4As shown, the two ends of the first-level shunt flow channel 331 are respectively connected to the middle area of ​​a second-level shunt flow channel 332, that is, there are two second-level shunt flow channels 332 in this embodiment, and the liquid can flow from the connecting end to its two ends in the second-level shunt flow channel 332. Further, the end of each second-level shunt flow channel 332 is respectively connected to the middle area of ​​a third-level shunt flow channel 333, that is, there are four third-level shunt flow channels 333 in this embodiment, and the liquid can flow from the connecting end to its two ends in the third-level shunt flow channel 333. A liquid outlet 32 ​​is provided at the end of each third-level shunt flow channel 333, that is, there are eight liquid outlets 32 in this embodiment. The liquid is divided three times in the liquid flow channel 33 of this embodiment, and eight liquid flows can be finally formed. The eight liquid outlets 32 can be distributed at the same distance on the liquid outlet plate 3, and the liquid can flow out from the eight liquid outlets 32 respectively to wet different areas of the roller brush 2 respectively.

[0026] However, the conventional design of the liquid flow channel 33 easily leads to the problem of uneven liquid discharge from each liquid outlet 32, especially when the total flow rate is low (such as 20-100 ml / min), the phenomenon of uneven liquid discharge will be more obvious. Fig.16 , the liquid flows into the first-stage branch flow channel 331 from the liquid inlet 31, and the liquid entering the second-stage branch flow channel 332 from the right end of the first-stage branch flow channel 331 has an inertia to the right, so that more liquid flows to the second-stage branch flow channel 332 on the right, and less liquid flows to the second-stage branch flow channel 332 on the left; and when the liquid enters the third-stage branch flow channel 333 from the second-stage branch flow channel 332, it will also be unevenly distributed according to the current inertia, which leads to flow differences among the four liquid outlets 32 on the right; similarly, the liquid from the first-stage branch flow channel 331 to the third-stage branch flow channel 333 will be unevenly distributed according to the current inertia, which leads to flow differences among the four liquid outlets 32 on the right. The liquid entering the second-stage diverter channel 332 from the left end of the flow channel 331 has an inertia to the left, so more liquid flows to the second-stage diverter channel 332 on the left, and less liquid flows to the second-stage diverter channel 332 on the right; and when the liquid enters the third-stage diverter channel 333 from the second-stage diverter channel 332, it will also be unevenly distributed according to the current inertia, which leads to flow differences among the four liquid outlets 32 on the left, with the result that the flow rate of the rightmost liquid outlet 32 ​​is the largest, and the flow rate of the third liquid outlet 32 ​​from the left is the smallest. In the case of a high total flow rate, since the liquid flow channel 33 can be completely filled with liquid, the problem of uneven liquid discharge will not be too obvious, but in the case of low flow, the flow rate difference between the liquid outlets 32 will be very obvious. This will cause a large difference in humidity at different positions of the roller brush 2, resulting in uneven distribution of water marks on the working surface, and the cleaning effect of the roller brush 2 will also be reduced.

[0027] In order to solve the above problems, the present disclosure provides a steering buffer zone 34 at the position where two adjacent levels of diversion channels are connected, and the liquid is configured to flow into the diversion channel of the next level after changing the flow direction at least twice in the steering buffer zone 34. In the process of step-by-step diversion of the liquid, the flow direction will be changed in the steering buffer zone 34 before each diversion, thereby reducing the kinetic energy of the liquid and eliminating the flow inertia of the liquid in the previous level of diversion channel. The liquid in the steering buffer zone 34 can flow into the diversion channel of the next level basically evenly, thereby reducing the flow difference during diversion. The present disclosure makes the diversion in the liquid outlet component more uniform. Even under low flow conditions, each liquid outlet 32 ​​of the liquid outlet component can maintain a basically uniform liquid output, thereby improving the user experience.

[0028] In one embodiment of the present disclosure, reference Figure 4 The upper-level flow diversion channel is constructed to connect the middle area of ​​the lower-level flow diversion channel through the diversion buffer zone 34, and the liquid in the diversion buffer zone 34 is configured to flow to the lower-level flow diversion channel on both sides thereof. The diversion buffer zones 34 between the first-level flow diversion channel 331 and the second-level flow diversion channel 332 and between the second-level flow diversion channel 332 and the third-level flow diversion channel 333 are respectively denoted as the first buffer zone 341 and the second buffer zone 342. Figure 5 As shown, a liquid inlet buffer zone 343 is provided at the connection position between the connecting channel 334 and the first-stage diversion channel 331. The liquid in the connecting channel 334 is configured to flow upward into the first-stage diversion channel 331 after changing the flow direction at least twice in the liquid inlet buffer zone 343. This can reduce the flow inertia and horizontal kinetic energy of the liquid in the connecting channel 334, and the liquid can be more evenly diverted to both sides of the first-stage diversion channel 331.

[0029] In this embodiment, the connecting channel 334 is connected to the middle area of ​​the first-level branch flow channel 331 through the liquid inlet buffer zone 343, that is, the first-level branch flow channel 331 is provided with one, and the liquid in the liquid inlet buffer zone 343 enters the first-level branch flow channel 331 and flows to the two opposite ends of the first-level branch flow channel 331; the two ends of the first-level branch flow channel 331 are respectively connected to the middle area of ​​the second-level branch flow channel 332 through their respective corresponding first buffer zones 341, that is, the second-level branch flow channel 332 is provided with two, and the middle area of ​​each second-level branch flow channel 332 is connected to the end of the corresponding first-level branch flow channel 331 through the first buffer zone 341, so that the liquid in the first buffer zone 341 enters the second-level branch flow channel 332 and flows Towards the two opposite ends of the second-level diversion channel 332; the two ends of the second-level diversion channel 332 are connected to the middle area of ​​the third-level diversion channel 333 through their respective corresponding second buffer zones 342; that is, there are four third-level diversion channels 333, and the middle area of ​​each third-level diversion channel 333 is connected to the corresponding end of the second-level diversion channel 332 through the second buffer zone 342, so that after the liquid in the second buffer zone 342 enters the third-level diversion channel 333, it will flow to the two opposite ends of the third-level diversion channel 333; thereby, it is achieved that the liquid is basically evenly diverted to the four third-level diversion channels 333, so that the eight liquid outlets 32 can basically evenly discharge liquid, and the wetting degree of each area of ​​the roller brush 2 can be basically kept consistent.

[0030] In one embodiment of the present disclosure, reference Figure 6 and Figure 7 , the steering buffer zone 34 includes a liquid storage area 344 located below the upper-level diversion channel, and the liquid storage area 344 is constructed to be connected to the lower-level diversion channels located on both sides thereof. The bottom end of the liquid storage area 344 is constructed to be lower than the lower-level diversion channel, and the top of the liquid storage area 344 is constructed not to be higher than the lower-level diversion channel, thereby causing the steering buffer zone 34 to sink relative to the lower-level flow channel. The liquid in the upper-level diversion channel is constructed to flow into the liquid storage area 344, and when the liquid level in the liquid storage area 344 reaches a predetermined height, it flows to the lower-level diversion channels on both sides thereof. The liquid storage area 344 is arranged below the upper-level diversion channel, which is beneficial to using gravity to slow down the kinetic energy in the horizontal direction in the liquid storage area 344. Figure 6As shown, taking the first buffer zone 341 as an example, a liquid storage area 344 is provided below the first-stage branch flow channel 331, and the top height of the liquid storage area 344 is not higher than the second-stage branch flow channel 332; the liquid from the first-stage branch flow channel 331 will not immediately flow into the second-stage branch flow channel 332 under the action of gravity after flowing into the liquid storage area 344, but will accumulate in the liquid storage area 344 until the liquid level rises to the height of the second-stage branch flow channel 332, and then the liquid can flow into the second-stage branch flow channel 332 on both sides. The liquid has a leftward (reference) Figure 6 In the liquid storage area 344, the liquid is buffered, and the kinetic energy is reduced, so that it can be basically evenly diverted to the second-stage diversion channel 332.

[0031] Similarly, if Figure 7 As shown, taking the second buffer zone 342 as an example, a liquid storage area 344 is provided below the second-level diversion channel 332, and the top height of the liquid storage area 344 is not higher than the third-level diversion channel 333; after the liquid from the second-level diversion channel 332 flows into the liquid storage area 344, it will not flow into the third-level diversion channel 333 immediately, but will accumulate in the liquid storage area 344 until the liquid level rises to the height of the third-level diversion channel 333, and then the liquid can flow into the third-level diversion channel 333 on both sides. The liquid has a leftward (reference) Figure 7 In the liquid storage area 344, the liquid is buffered, and the kinetic energy is reduced, so that it can be basically evenly diverted to the third-stage diversion channel 333.

[0032] In one embodiment of the present disclosure, reference Figure 5 At the end of the connecting channel 334, a liquid inlet buffer zone 343 is provided, and the top of the liquid inlet buffer zone 343 is not higher than the first-stage branch flow channel 331; after the liquid from the connecting channel 334 flows into the liquid inlet buffer zone 343, it will not flow into the first-stage branch flow channel 331 immediately, but will accumulate in the liquid inlet buffer zone 343 until the liquid level rises to the height of the first-stage branch flow channel 331, and then the liquid can flow into the first-stage branch flow channel 331. The liquid has a rightward (reference Figure 5 In the liquid inlet buffer area 343, the liquid is buffered, and the kinetic energy is reduced, so that the liquid can be basically evenly diverted to the left and right sides of the first-stage diversion channel 331.

[0033] The present disclosure sets a turning buffer zone 34 between each level of flow channels, so that the upstream liquid can accumulate and stay briefly in the turning buffer zone 34, so that the kinetic energy of the liquid can be reduced in advance before each diversion, avoiding the inertia of the liquid being continuously maintained and accumulated in the upper flow channel. During each diversion, the liquid with kinetic energy eliminated can be evenly diverted to the lower diversion channels on both sides as the liquid level rises steadily, so that each liquid outlet 32 ​​can maintain a basically uniform liquid output.

[0034] In one embodiment of the present disclosure, reference Figure 6 and Figure 7 The steering buffer area 34 further includes a first guide rib 3451 and a second guide rib 3452. The first guide rib 3451 and the second guide rib 3452 are configured to participate in forming a steering channel 345. The steering channel 345 is configured to extend from the upper-level shunt channel toward the liquid storage area 344. The liquid in the upper-level shunt channel is configured to flow into the liquid storage area 344 through the steering channel 345. The width of the liquid storage area 344 is configured to be greater than the width of the steering channel 345, so that when the liquid flows from the steering channel 345 into the liquid storage area 344, the flow rate of the liquid is reduced, which helps to eliminate the kinetic energy of the liquid.

[0035] like Figure 6 As shown, taking the first buffer zone 341 as an example, when liquid flows from the first-stage diverter channel 331 to the second-stage diverter channel 332, it needs to first turn from the horizontal flow direction (located in the first-stage diverter channel 331) to the vertical flow direction (located in the diverting channel 345), then turn to the horizontal flow direction (located in the liquid storage area 334), then turn to the upward flow (the liquid level rises in the liquid storage area 334), and finally turn to the horizontal flow direction (located in the second-stage diverter channel 332). After multiple flow direction conversions, the horizontal kinetic energy of the liquid along the initial flow direction in the first-stage diverter channel 331 can be eliminated as much as possible, so that it can flow evenly into the second-stage diverter channel 332.

[0036] Similarly, if Figure 7 As shown, taking the second buffer zone 342 as an example, when the liquid flows from the second-stage diverter channel 332 to the third-stage diverter channel 333, it needs to first turn from the horizontal flow direction (located in the second-stage diverter channel 332) to the vertical flow direction (located in the diverting channel 345), then turn to the horizontal flow direction (located in the liquid storage area 334), then turn to the upward flow (the liquid level rises in the liquid storage area 334), and finally turn to the horizontal flow direction (located in the third-stage diverter channel 333). After multiple flow direction conversions, the horizontal kinetic energy of the liquid along the initial flow direction in the second-stage diverter channel 332 can be eliminated as much as possible, so that it can flow evenly into the third-stage diverter channel 333.

[0037] In a specific embodiment of the present disclosure, Figure 6As shown, in the steering buffer zone 34 at least located upstream, one end of the steering channel 345 adjacent to the liquid storage area 344 is constructed to be lower than the top of the liquid storage area 344 in the height direction. If the end of the steering channel 345 adjacent to the liquid storage area 344 is set to be higher than or flush with the top of the liquid storage area 344, then after the liquid storage area 344 is filled with liquid, no new liquid will flow into the liquid storage area 344, but will directly flow into the next-level diversion channel after flowing out of the steering channel 345, so that the kinetic energy cannot be removed, and the liquid cannot be fully buffered. The present disclosure designs the first guide rib 3451 and the second guide rib 3452 to partially extend into the liquid storage area 344, so that the liquid in the steering channel 345 can flow to a position lower than the highest liquid level of the liquid storage area 344, thereby ensuring the renewal of the liquid in the liquid storage area 344, and then ensuring that the liquid can be continuously buffered, avoiding the problem of uneven diversion caused by kinetic energy impact.

[0038] Furthermore, the liquid in the upstream has a higher kinetic energy, and it can be seen that the buffering requirement in the upstream is relatively large. Therefore, in at least the steering buffer area 34 located in the upstream, the steering channel 345 can extend into the liquid storage area 344. For example, in this embodiment, Figure 6 In the first buffer zone 341 shown in FIG. 1 , the end of the turning channel 345 adjacent to the liquid storage zone 344 is significantly lower in height than the top of the liquid storage zone 344. Figure 7 As shown, in the second buffer zone 342 located downstream, one end of the turning channel 345 adjacent to the liquid storage area 344 can be basically flush with the top of the liquid storage area 344 in the height direction. This is because the kinetic energy of the liquid downstream has been consumed in large quantities, and its buffering demand is relatively small, and the space of the downstream turning buffer zone 34 is small, so the turning channel 345 can be reasonably set based on the actual space.

[0039] In one embodiment of the present disclosure, reference Figure 6 and Figure 7 , a barrier wall 35 is provided at the end of the previous-stage flow diversion channel, and in the extension direction of the previous-stage flow diversion channel, one end of the turning channel 345 is configured to communicate with the position of the previous-stage flow diversion channel that deviates from its barrier wall 35, so as to form a liquid buffer zone 351 in the area between the barrier wall 35 and the turning channel 345 in the previous-stage flow diversion channel, and the liquid buffer zone 351 is located in the extension path of the previous-stage flow diversion channel. Figure 6 In the viewing direction, taking the first buffer zone 341 as an example, a blocking wall 35 is provided at the left end of the first-stage branch flow channel 331, and the second guide rib 3452 deviates from the blocking wall 35 to the right in the vertical direction, thereby forming a liquid buffer zone 351 at the left end of the first-stage branch flow channel 331; the liquid in the first-stage branch flow channel 331 can be blocked by the blocking wall 35 when flowing to the left, which is beneficial to reducing the horizontal kinetic energy of the liquid, and the liquid refluxes in the liquid buffer zone 351 and enters the turning channel 345 with less kinetic energy.

[0040] refer to Figure 7 In the viewing direction, taking the second buffer zone 342 as an example, a blocking wall 35 is provided at the left end of the second-level diversion channel 332, and the second guide rib 3452 deviates from the blocking wall 35 to the right in the vertical direction, thereby forming a liquid buffer zone 351 at the left end of the second-level diversion channel 332; the liquid in the second-level diversion channel 332 can be blocked by the blocking wall 35 when flowing to the left, which is beneficial to reducing the horizontal kinetic energy of the liquid. The liquid refluxes in the liquid buffer zone 351 and enters the turning channel 345 with less kinetic energy.

[0041] If the liquid buffer zone 351 is not provided, the upstream liquid flow will turn to enter the turning channel 345 with more kinetic energy after impacting the flow channel wall. At this time, the kinetic energy of the liquid flow is more uncontrollable, and it may have kinetic energy in all directions. This may make it impossible for the liquid flow to flow along the path planned by the liquid flow channel 33 (i.e., first enter the liquid storage area 344 along the turning channel 345 for buffering, and then flow into the next-level flow channel after the liquid level rises). The unbuffered liquid cannot flow evenly to the left or right into the next-level flow channel. The present disclosure provides a liquid buffer zone 351 at the end of the previous-level flow channel, so that the liquid in the previous-level flow channel can unify the kinetic energy direction by impacting the blocking wall 35 and flowing back before entering the turning channel 345, thereby facilitating average flow distribution and helping each liquid outlet 32 ​​maintain a basically uniform liquid output.

[0042] In one embodiment of the present disclosure, reference Figure 4, the height dimension of the steering buffer zone 34 located at the upstream position is greater than the height dimension of the steering buffer zone 34 located at the downstream position; and / or, the height dimension of the steering buffer zone 34 located at the most downstream position is less than the height dimension of the steering buffer zone 34 at other positions. It should be noted that the height dimension of the steering buffer zone 34 includes the depth of the liquid storage area 344 and the extension length of the steering channel 345, that is, the height dimension of the steering buffer zone 34 can be reflected in the depth of the liquid storage area 344 and the extension length of the steering channel 345. The deeper the liquid storage area 344 and the longer the steering channel 345, the larger the height dimension of the steering buffer zone 34 is considered. For example, in this embodiment, only three-level shunt channels are provided, so only two steering buffer zones 34, namely the first buffer zone 341 and the second buffer zone 342, are included, and the height dimension of the first buffer zone 341 is greater than the height dimension of the second buffer zone 342. It can be understood that as the shunt proceeds, the amount of liquid entering each shunt channel will decrease step by step, and after each shunt buffering, the kinetic energy of the liquid will also decrease step by step. It can be seen that the kinetic energy of the upstream liquid is the largest, so the turning buffer zone 34 at the upstream position needs to be set to a larger height dimension to improve the buffering effect; and when the liquid flows to the downstream position, its kinetic energy has been greatly attenuated, so the turning buffer zone 34 at the downstream position can be set to a smaller height dimension, which on the one hand reduces the space occupied by the most downstream turning buffer zone 34, and on the other hand improves the smoothness of the downstream diversion channel and reduces the amount of liquid stored in the liquid storage area 344.

[0043] In other embodiments, more levels of diversion channels can be set in the liquid outlet plate 3. For example, in the case of setting a four-level diversion channel, the height dimension of the steering buffer zone 34 at the most upstream position can be set to the largest, the height dimension of the steering buffer zone 34 at the midstream position can be centered, and the height dimension of the steering buffer zone 34 at the downstream position can be the smallest. Alternatively, only the height dimension of the steering buffer zone 34 at the most downstream position can be set to the smallest, while the height dimensions of the steering buffer zones 34 at the upstream and midstream positions can be the same. This is because the kinetic energy of the liquid that needs to be buffered by the most downstream steering buffer zone 34 is smaller than that of the upstream, so only a smaller steering buffer zone 34 needs to be set to meet the buffering function requirements, thereby reducing the size of the liquid outlet plate 3. In addition, the kinetic energy of the liquid upstream is greater and needs to be buffered more. Based on the height of the flow channel itself, the upstream has a larger space to set a larger steering buffer zone. In this way, the size of the liquid outlet plate 3 is reduced while meeting the buffering requirements at all levels.

[0044] In one embodiment of the present disclosure, reference Figure 4 The third-stage flow diversion channel 333 and the second buffer zone 342 are configured to be located within the extension range of the first buffer zone 341 in the axial direction of the roller brush 2. Figure 5, the connecting channel 334 is constructed to be flush with the second-stage shunt flow channel 332, and the liquid inlet buffer zone 343 is constructed to be located within the extension range of the first buffer zone 341 in the axial direction of the roller brush 2. In this way, a compact arrangement of three-stage shunt channels and connecting channels is provided. Compared with the traditional liquid outlet plate 3, the present disclosure adds a steering buffer zone 34 (for example, at least including: a first buffer zone 341, a second buffer zone 342) and a liquid inlet buffer zone 343 that occupy space in the height direction. However, the present disclosure optimizes the layout of the liquid circuit so that the shunt channel is located within the lateral extension range of the steering buffer zone 34, thereby eliminating the need to set up additional height space, and the size of the liquid outlet plate 3 can be completely consistent with the traditional liquid outlet plate 3, which is conducive to improving the adaptability of the liquid outlet plate 3. Users can use the space of the existing liquid outlet component to replace the liquid outlet plate 3 of the present disclosure without replacing the entire cleaning equipment. In addition, since the kinetic energy of the liquid located downstream is smaller than that of the liquid located upstream, the size of the second buffer zone 342 located downstream can be set to be smaller than the size of the first buffer zone 341 located upstream. At the same time, the height difference from the first-level diversion channel 331 to the third-level diversion channel 333 is the largest. Therefore, combined with the needs of kinetic energy elimination and occupied space at different positions, the third-level diversion channel 333 and the second buffer zone 342 are constructed to be located within the axial extension range of the first buffer zone 341 in the roller brush 2, and the liquid inlet buffer zone 343 is constructed to be located within the axial extension range of the first buffer zone 341 in the roller brush 2.

[0045] In one embodiment of the present disclosure, reference Figure 8 and Fig. 9 , a liquid separation part 36 and a guide part are arranged at the position corresponding to the liquid outlet 32 ​​on the liquid outlet plate 3, and the guide part is constructed to extend from the position adjacent to the liquid outlet 32 ​​in a manner of being away from each other, and at least two guide points 370 distributed at intervals are formed at one end away from the liquid outlet 32. The liquid outlet plate 3 is usually installed vertically on the floor brush housing 1, so that the liquid in the liquid outlet plate 3 can flow from upstream to downstream under the action of gravity; and the liquid outlet 32 ​​on the liquid outlet plate 3 is constructed to face the roller brush 2, and the liquid needs to change its flow direction to be perpendicular to the flow channel or at a large angle to the flow channel to flow out from the liquid outlet 32. The liquid flowing out of the liquid outlet 32 ​​is constructed to flow along the guide parts on both sides after being separated by the liquid separation part 36. There are multiple liquid outlets 32, and a liquid separation part 36 is arranged at the position corresponding to each liquid outlet 32. The liquid from the liquid outlet 32 ​​impacts the inner wall of the liquid separation part 36, thereby being diverted to both sides of the liquid separation part 36.

[0046] For the traditional liquid outlet plate 3, a rib structure for liquid separation is usually provided. However, due to the tension, the liquid will re-merge after passing through the ribs and cannot be completely separated into two liquid flows. The present disclosure additionally provides a guide portion, so that the liquid from the liquid outlet 32 ​​flows away from each other along the guide portion after being separated by the liquid separation portion 36. Under the action of the guide portion, the liquid flows to the two guide points 370 without merging, thereby achieving complete separation and improving the effect of dispersing the liquid from the liquid outlet plate 3.

[0047] Specifically, Figure 8 As shown, the guide portion includes guide ribs 372 located on opposite sides of the liquid separation portion 36. The liquid separation portion 36 is constructed to extend upward from between the two guide ribs 372 to a position higher than the liquid outlet 32. The guide ribs 372 are constructed to extend obliquely in the axial direction of the roller brush 2. It can be understood that the ends of the guide ribs 372 on both sides away from the liquid outlet 32 ​​form two guide points 370 distributed at intervals on the liquid outlet plate 3. The guide portion also includes guide surfaces 371 located on opposite sides of the liquid separation portion 36 and connected to the bottom of the guide ribs 372. The guide surfaces 371 are constructed to gradually incline in the height direction from a position adjacent to the liquid outlet 32 ​​toward the direction of the roller brush 2. As shown Figure 8 As shown, two guide ribs 372 and two guide surfaces 371 are symmetrically arranged on both sides of the liquid separation portion 36, so as to guide and receive the two liquid flows after the separation. The two liquid flows can flow away from each other along the guide ribs 372 on both sides and spread on the guide surface 371; because the guide surface 371 is inclined toward the direction of the roller brush 2, the liquid will not accumulate on the guide surface 371, but can naturally flow to the roller brush 2 under the action of gravity.

[0048] In one embodiment of the present disclosure, reference Figure 8 , a separating rib 38 is provided on the guide surface 371 between adjacent liquid outlets 32, and the separating rib 38 is constructed to extend from one end of the adjacent liquid outlet 32 ​​to the edge of the liquid outlet plate 3. It can be understood that adjacent liquid outlets 32 discharge liquid at the same time and are respectively diverted through their corresponding liquid diverting parts 36 to form four liquid flows, wherein the right liquid flow of the left liquid outlet 32 ​​and the left liquid flow of the right liquid outlet 32 ​​will flow close to each other under the action of their respective guide ribs 372 and guide surfaces 371. If the separating rib 38 is not provided, the liquid flows on both sides will converge, which is not conducive to dispersed liquid discharge. The present disclosure achieves separation of each liquid outlet 32 ​​by providing the separating rib 38, and the liquid flows from each liquid outlet 32 ​​will not converge with each other after diversion, but can flow separately on their corresponding guide surfaces 371, effectively improving the dispersed liquid discharge effect of the liquid outlet plate 3.

[0049] In one embodiment of the present disclosure, Figure 1As shown, the floor brush housing 1 is provided with a sewage suction port 5, which can be connected to the sewage bucket on the body through a sewage suction channel, so that the cleaning device can suck the dirt at the sewage suction port 5 into the sewage bucket. Figure 2 As shown, a scraper plate 4 is provided below the liquid outlet plate 3, and the scraper plate 4 is configured to be interference fit with the roller brush 2. It should be noted that the scraper plate 4 can be considered as a part of the liquid outlet assembly, and the scraper plate 4 is fixed to the liquid outlet assembly so that it and the liquid outlet assembly form an assembled part, or it can be a component independent of the liquid outlet assembly. Figure 2 In the viewing direction, the roller brush 2 can rotate in the clockwise direction during normal operation, so that the roller brush 2 first passes through the scraper plate 4 and then passes through the liquid outlet assembly during the rotation process. The scraper plate 4 can scrape off the dirt on the roller brush 2, and the scraped dirt is sucked by the negative pressure at the dirt suction port 5 located below the scraper plate 4 (the negative pressure is generated by the suction motor, and the suction motor can be located on the machine body), thereby avoiding excessive dirt attached to the surface of the roller brush 2 and improving the cleaning effect of the roller brush 2. After the dirt on the roller brush 2 is scraped off, the liquid outlet assembly sprays clean cleaning medium onto the roller brush 2, and the roller brush 2 soaked in the clean cleaning medium rotates again to contact the working surface to clean the working surface.

[0050] refer to Fig.10 The side of the scraper plate 4 close to the roller brush 2 is constructed to exceed the edge of the liquid outlet plate 3, and the liquid flowing down from the guide portion is configured to flow to the roller brush 2 through the scraper plate 4 (specifically, the upper surface of the scraper plate 4). In this embodiment, the scraper plate 4 has the function of receiving the liquid drainage. Under the drainage effect of the guide ribs 372 and the guide surface 371, the liquid will flow to the scraper plate 4 and continue to be drained from the scraper plate 4 to the roller brush 2. Since the scraper plate 4 and the roller brush 2 are interference fit, there is no gap between the two, so the liquid can be completely drained to the roller brush 2 without dripping onto the working surface.

[0051] refer to Fig.11, the distance between the position area between the two guide points 370 and the outer edge of the scraper plate 4 is greater than the distance between the dividing rib 38 and the outer edge of the scraper plate 4. Since the outer edge of the scraper plate 4 is constructed as a straight line, the above distance difference makes the exposed area of ​​the scraper plate 4 corresponding to the position between the two guide points 370 larger than the exposed area of ​​the scraper plate 4 corresponding to the position of the dividing rib 38. Specifically, the scraper plate 4 is partially covered by the guide surface 371, and the uncovered exposed area 41 can play a drainage role. In a specific embodiment, the scraper plate 4 can be made of a hydrophilic material such as a metal material. Since the metal material is hydrophilic, the liquid can be easily spread evenly on the metal scraper plate 4. Furthermore, the exposed areas at various positions on the scraper plate 4 are different, and the liquid is more likely to flow to the area with a larger exposed area on the scraper plate 4. The distance between the dividing rib 38 and the outer edge of the scraper plate 4 is relatively small, and the corresponding exposed area of ​​the scraper plate 4 is also relatively small. Therefore, the liquid flowing down from the dividing rib 38 is more easily guided to other areas on the scraper plate 4; the distance between the position area between the two guide points 370 and the outer edge of the scraper plate 4 is relatively large, and the corresponding exposed area of ​​the scraper plate 4 is also relatively large. Therefore, the liquid is more easily guided on the scraper plate 4 to the position between the two guide points 370.

[0052] Furthermore, the distance from the middle of the two guide points 370 of the liquid outlet plate 3 from the dividing rib 38 to the outer edge of the scraper plate 4 gradually increases, and the corresponding exposed area of ​​the scraper plate 4 also gradually increases. Due to the diversion effect of the two guide ribs 372, there is almost no liquid flowing to the scraper plate 4 in the area between the two guide points 370; the position corresponding to the dividing rib 38 needs to receive the liquid from the liquid outlets 32 on both sides, so a large amount of liquid will flow to the scraper plate 4; and for the area between the guide point 370 and the dividing rib 38 (i.e., the area corresponding to the guide surface 371), a relatively average amount of liquid will flow to the scraper plate 4. Based on this, the present disclosure sets the area of ​​the exposed area 41 of the scraper plate 4 to be inversely proportional to the liquid flow rate, that is, the smaller the flow rate, the larger the area of ​​the exposed area 41, and the larger the flow rate, the smaller the area of ​​the exposed area 41. After the liquid in the area with large flow (i.e. the position corresponding to the dividing rib 38) flows to the scraper plate 4, it can flow to the area with a larger area of ​​the exposed area 41 (i.e. the position corresponding to the two guide points 370), which is conducive to evenly spreading the liquid on the scraper plate 4 and helping to make the humidity at various positions on the roller brush 2 more uniform.

[0053] The present disclosure also provides a liquid outlet assembly, which includes a liquid outlet plate 3, a liquid inlet 31 and a liquid outlet 32 ​​arranged on the liquid outlet plate, and a liquid flow channel 33 connecting the liquid inlet 31 and the liquid outlet 32. The liquid flow channel 33 includes at least two levels of diversion channels located at different heights and connected in sequence; a steering buffer zone 34 is provided at the position where two adjacent levels of diversion channels are connected, and the liquid is configured to flow into the diversion channel of the next level after changing the flow direction at least twice in the steering buffer zone 34. The specific structure and principle of the liquid outlet assembly of the present disclosure refer to the liquid outlet assembly of the above-mentioned cleaning device, and the present disclosure will not repeat them here.

[0054] Embodiment 2 The cleaning device provided in Example 1 was used as the experimental group, and the conventional cleaning device without a steering buffer zone was used as the control group to conduct the following two experiments: Experiment 1: Roller brush segment humidity test The control group and the experimental group were tested with the same new roller brushes to eliminate the influence of the roller brush's own absorption capacity. Lines were drawn on the two groups of roller brushes to divide them into five sections. Specifically, the five sections from the motor side to the handle side of the roller brush were marked as sections A, B, C, D, and E. This test determined the difference in the uniformity of the liquid discharge of the two groups of liquid discharge plates by measuring the water content of each section of the two groups of roller brushes.

[0055] Test method: Use a moisture meter to test the moisture in each area of ​​the dry roller brush; install the roller brush on the cleaning equipment and run it for 5 minutes; then remove the roller brush and use the moisture meter to test the moisture in each area of ​​the roller brush again; compare the difference between the results before and after. The control group and the experimental group were tested five times respectively.

[0056] Table 1: Test results of roller brush humidity in the control group

[0057] Table 2: Test results of roller brush humidity in the experimental group

[0058] The test results are shown in Table 1, Table 2, Fig.12 and Fig.13 The coefficient of variation of the difference in moisture content of each section of the roller brush in the control group after running for five minutes (0.20) is greater than the coefficient of variation of the difference in moisture content of each section of the roller brush in the experimental group after running for five minutes (0.13). It can be seen that the cleaning equipment and liquid outlet component provided by the present invention can divert the flow more evenly, and the moisture content of each section of the roller brush is more uniform.

[0059] Experiment 2: Liquid outlet flow test The liquid outlet components of the cleaning equipment in the control group and the experimental group are both equipped with 8 liquid outlet holes. This test determines the difference in liquid outlet uniformity between the two groups of liquid outlet plates by measuring the liquid outlet volume of each hole of the two groups of liquid outlet components. Test method: First open the flow rate for 5 seconds to ensure that all liquid flow paths are unobstructed and that all 8 liquid outlet holes can discharge liquid normally; then test at a flow rate of 30 ml / min, and record the liquid outlet volume of each liquid outlet hole within 1 minute. The control group and the experimental group were tested five times respectively.

[0060] Table 3: Results of the flow rate test of the control group

[0061] Table 4: Test results of the outlet flow rate of the experimental group

[0062] The test results are shown in Table 3, Table 5, Fig.14 and Fig.15 The difference in water output between the holes of the liquid outlet plate in the control group is greater than the difference in water output between the holes of the liquid outlet plate in the experimental group. It can be seen that the cleaning equipment and liquid outlet assembly provided by the present disclosure can divert the flow more evenly, and the liquid output of each liquid outlet hole is more uniform.

[0063] Application scenario 1 The cleaning device is a handheld floor scrubber, which includes a floor brush assembly, which includes: a floor brush housing 1, a roller brush 2 and a liquid outlet assembly, wherein the liquid outlet assembly includes a liquid outlet plate 3. A liquid flow channel 33 is provided in the liquid outlet plate 3, and the liquid flow channel 33 includes three-level diversion channels, which are sequentially recorded as a first-level diversion channel 331, a second-level diversion channel 332 and a third-level diversion channel 333 in the direction from the liquid inlet 31 to the liquid outlet 32. A first buffer zone 341 and a second buffer zone 342 are provided between the first-level diversion channel 331 and the second-level diversion channel 332, and between the second-level diversion channel 332 and the third-level diversion channel 333, respectively.

[0064] The liquid flow channel 33 also includes a connecting channel 334 for connecting the liquid inlet 31 to the first-level branch flow channel 331, and a liquid inlet buffer zone 343 is provided at the connecting position between the connecting channel 334 and the first-level branch flow channel 331. The connecting channel 334 is connected to the middle area of ​​the first-level branch flow channel 331 through the liquid inlet buffer zone 343, and the two ends of the first-level branch flow channel 331 are connected to the middle area of ​​the second-level branch flow channel 332 through their respective corresponding first buffer zones 341, that is, two second-level branch flow channels 332 are formed; the two ends of the second-level branch flow channel 332 are connected to the middle area of ​​the third-level branch flow channel 333 through their respective corresponding second buffer zones 342, that is, four third-level branch flow channels 333 are formed.

[0065] The liquid flows into the connecting channel 334 through the liquid inlet 31, and flows into the liquid inlet buffer 343 for buffering, and then enters the first-level diversion channel 331 from the middle position, and is evenly diverted to the left and right sides. The liquid flows to the left and right sides in the first-level diversion channel 331, and when it flows to the ends of both sides, the liquid can flow into the first buffer 341 for buffering under the action of gravity; after the liquid accumulates in the liquid storage area 344 of the first buffer 341 until the liquid level rises to the height of the second-level diversion channel 332, the liquid is evenly diverted into the second-level diversion channel 332 on both sides. When the liquid flows to the end in the second-level diversion channel 332, the liquid can flow into the second buffer 342 for buffering under the action of gravity; after the liquid accumulates in the liquid storage area 344 of the second buffer 342 until the liquid level rises to the height of the third-level diversion channel 333, the liquid is evenly diverted into the third-level diversion channel 333 on both sides.

[0066] After the above diversion process, the liquid is evenly divided into eight streams. The liquid outlet plate 3 can be provided with eight liquid outlets 32 spaced at the same distance, and substantially equal amounts of liquid can flow out of the eight liquid outlets 32 to evenly wet different areas of the roller brush 2. A liquid separation portion 36 and a guide portion are also provided at the position corresponding to each liquid outlet 32. The liquid flowing out of the liquid outlet 32 ​​is constructed to flow along the guide portions on both sides after being separated by the liquid separation portion 36, thereby improving the effect of the liquid outlet plate 3 in dispersing the liquid. The liquid flowing down from the guide portion will flow onto the scraper plate 4, and continue to be drained from the scraper plate 4 to the roller brush 2. The liquid can flow on the scraper plate 4 toward a larger exposed area 41, which is conducive to evenly spreading the liquid on the scraper plate 4, and helps to make the humidity at various positions on the roller brush 2 more uniform.

[0067] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cleaning device, comprising a floor brush assembly, characterized in that: The floor brush assembly comprises: Floor brush housing (1); A roller brush (2) rotatably connected to the floor brush housing (1) and configured to clean a working surface; A liquid outlet assembly, arranged on the floor brush housing (1); the liquid outlet assembly comprises a liquid outlet plate (3), a liquid inlet (31) and a liquid outlet (32) arranged on the liquid outlet plate (3), and a liquid flow channel (33) connecting the liquid inlet (31) and the liquid outlet (32); The liquid flow channel (33) comprises at least two levels of diversion channels located at different heights and connected in sequence, and when the liquid flows into the diversion channels, it flows in two different directions; a steering buffer zone (34) is provided at the position where the two adjacent levels of diversion channels are connected, and the liquid is configured to change its flow direction at least twice in the steering buffer zone (34) before flowing into the diversion channel of the next level.

2. The cleaning device according to claim 1, characterized in that The steering buffer zone (34) comprises a liquid storage area (344) located below an upper-level diversion channel, and the liquid storage area (344) is configured to be connected to two lower-level diversion channels located on both sides thereof respectively; the bottom end of the liquid storage area (344) is configured to be lower than the lower-level diversion channel, and the top of the liquid storage area (344) is configured to be not higher than the lower-level diversion channel; the liquid in the upper-level diversion channel is configured to flow into the liquid storage area (344), and when the liquid level in the liquid storage area (344) reaches a predetermined height, it flows to the lower-level diversion channels on both sides thereof.

3. The cleaning device according to claim 2, characterized in that: The steering buffer zone (34) further comprises a first guide rib (3451) and a second guide rib (3452); the first guide rib (3451) and the second guide rib (3452) are configured to participate in forming a steering channel (345); the steering channel (345) is configured to extend from an upper-level flow diversion channel toward the liquid storage area (344); and the liquid in the upper-level flow diversion channel is configured to flow into the liquid storage area (344) through the steering channel (345).

4. The cleaning device according to claim 3, characterized in that: In the turning buffer area (34) at least located upstream, one end of the turning channel (345) adjacent to the liquid storage area (344) is constructed to be lower than the top of the liquid storage area (344) in the height direction.

5. The cleaning device according to claim 3, characterized in that: A blocking wall (35) is provided at the end of the previous-stage flow diversion channel. In the extension direction of the previous-stage flow diversion channel, one end of the turning channel (345) is constructed to communicate with a position of the previous-stage flow diversion channel that deviates from its blocking wall (35), so as to form a liquid buffer zone (351) in the area between the blocking wall (35) and the turning channel (345) in the previous-stage flow diversion channel. The liquid buffer zone (351) is located in the extension path of the previous-stage flow diversion channel.

6. The cleaning device according to claim 1, characterized in that The liquid flow channel (33) comprises at least three levels of flow diversion channels, which are sequentially recorded as a first-level flow diversion channel (331), a second-level flow diversion channel (332) and a third-level flow diversion channel (333) in the direction from the liquid inlet (31) to the liquid outlet (32); wherein the turning buffer zones (34) between the first-level flow diversion channel (331) and the second-level flow diversion channel (332) and between the second-level flow diversion channel (332) and the third-level flow diversion channel (333) are respectively recorded as a first buffer zone (341) and a second buffer zone (342); wherein the third-level flow diversion channel (333) and the second buffer zone (342) are constructed to be located within the extension range of the first buffer zone (341) in the axial direction of the roller brush (2).

7. The cleaning device according to claim 6, characterized in that The liquid flow channel (33) further comprises a connecting channel (334) for connecting the liquid inlet (31) with the first-stage flow diversion channel (331); the connecting channel (334) is constructed to be lower than the first-stage flow diversion channel (331); a liquid inlet buffer zone (343) is provided at a connecting position between the connecting channel (334) and the first-stage flow diversion channel (331); and the liquid in the connecting channel (334) is configured to flow upward into the first-stage flow diversion channel (331) after changing the flow direction at least twice in the liquid inlet buffer zone (343).

8. The cleaning device according to claim 7, characterized in that The connecting channel (334) is constructed to be flush with the second-stage flow diversion channel (332); and the liquid inlet buffer zone (343) is constructed to be located within the extension range of the first buffer zone (341) in the axial direction of the roller brush (2).

9. The cleaning device according to claim 3, characterized in that: The height dimension of the steering buffer zone (34) located at the upstream position is greater than the height dimension of the steering buffer zone (34) located at the downstream position; and / or the height dimension of the steering buffer zone (34) located at the most downstream position is smaller than the height dimensions of the steering buffer zones (34) at other positions.

10. The cleaning device according to claim 9, characterized in that The height dimension of the steering buffer zone (34) includes the depth of the liquid storage area (344) and the extension length of the steering channel (345).

11. The cleaning device according to claim 1, characterized in that A liquid separation portion (36) and a guide portion are provided at a position on the liquid outlet plate (3) corresponding to the liquid outlet (32); the guide portion is configured to extend from a position adjacent to the liquid outlet (32) in a manner away from each other, and at least two guide points (370) are formed at an end away from the liquid outlet (32); the liquid flowing out of the liquid outlet (32) is configured to flow along the guide portions on both sides after being separated by the liquid separation portion (36).

12. The cleaning device according to claim 11, characterized in that The guide portion comprises guide ribs (372) located on opposite sides of the liquid separation portion (36); the liquid separation portion (36) is configured to extend upwards from between the two guide ribs (372) to a position higher than the liquid outlet (32); and the guide ribs (372) are configured to extend obliquely in the axial direction of the roller brush (2).

13. The cleaning device according to claim 12, characterized in that The guide portion further comprises guide surfaces (371) located at opposite sides of the liquid separation portion (36) and connected to the bottom of the guide rib (372); a separation rib (38) is provided on the guide surface (371) between adjacent liquid outlets (32); the separation rib (38) is configured to extend from one end adjacent to the liquid outlet (32) to the edge of the liquid outlet plate (3); A scraping plate (4) is arranged below the liquid outlet plate (3), and the scraping plate (4) is configured to be interference fit with the rolling brush (2); a side of the scraping plate (4) close to the rolling brush (2) is configured to extend beyond the edge of the liquid outlet plate (3), and the liquid flowing down from the guide portion is configured to flow toward the rolling brush (2) via the scraping plate (4); The distance between the position area between the two guide points (370) and the outer edge of the scraping plate (4) is greater than the distance between the separation rib (38) and the outer edge of the scraping plate (4).

14. The cleaning device according to claim 1, characterized in that Each level of the diversion channel is configured to extend along the axial direction of the roller brush (2), the upper level of the diversion channel is configured to communicate with the middle area of ​​the lower level of the diversion channel through the steering buffer zone (34), and the liquid in the steering buffer zone (34) is configured to flow to the lower level of the diversion channel on both sides thereof; The diverter channel at the most upstream position is configured to communicate with the liquid inlet (31); a plurality of liquid outlets (32) are provided, and the plurality of diverter channels at the most downstream position are configured to communicate with the plurality of liquid outlets (32) respectively.

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