A cleaning device with variable flow channel flushing direction

Abstract

The present application is suitable for the technical field of cleaning. The present application discloses a cleaning device with changeable flow channel flushing direction, comprising a scrubbing head and a handle connected with the scrubbing head, characterized in that the scrubbing head comprises a body, a water tank, a scrubbing roller and a liquid flow channel, wherein the scrubbing roller realizes continuous scrubbing by continuously rolling on the surface to be cleaned; the body is provided with a pump for conveying cleaning liquid in the water tank to the scrubbing roller and the liquid flow channel; the handle is provided with a control panel, so that the pump executes the reverse instruction according to the set program or the signal fed back by the sensor arranged on the body, thereby changing the liquid conveying direction, which plays a very favorable role in flushing and preventing blockage of the inner wall of all liquid flow pipelines or channels. The blockage of the water flow channel can be further prevented.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology, and more particularly to a cleaning device with a variable flow channel rinsing direction. Background Technology

[0002] Existing cleaning devices can continuously scrub the surface to be cleaned. However, the built-in pump delivers water in a single direction. Continuous scrubbing on the surface to be cleaned for a long time can easily cause blockage or scaling on the inner walls of the liquid flow pipes or channels. After the inner walls of the liquid flow pipes or channels are blocked or scaled, the water stains left by the cleaning device when scrubbing the surface to be cleaned are not good for the user's health.

[0003] Therefore, it is necessary to develop a cleaner that prevents the inner walls of liquid flow pipes or channels from becoming clogged or scaled. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide a cleaning device with a variable flow channel rinsing direction. This cleaning device can continuously scrub the surface to be cleaned. The direction of water delivery by the built-in pump can be executed according to a predetermined program or signals from sensors installed in the liquid flow pipelines or channels to execute a "reverse command," thereby changing the "water flow direction." This is highly effective in preventing clogging of the inner walls of all liquid flow pipelines or channels. It can further prevent blockage of the water flow channels. During use, users can modify the water pipeline connections of the cleaner according to their own preferences and specific needs, increasing the consumer's participation in the continuous improvement of the cleaner product through DIY, and providing practical hardware support for users to customize the product according to their own preferences.

[0005] To address the aforementioned technical problems, this invention provides a cleaning device with a variable flow channel rinsing direction, comprising a scrubbing head and a handle connected to the scrubbing head. The scrubbing head includes a body, a water tank, a scrubbing roller, and a liquid flow channel. The scrubbing roller continuously scrubs the surface to be cleaned by rolling continuously. The body is equipped with a pump that delivers cleaning fluid from the water tank to the scrubbing roller and the liquid flow channel. The handle contains a control panel that allows the pump to execute a reverse command according to a pre-set program or a signal fed back from a sensor located on the body, thereby changing the liquid delivery direction.

[0006] Furthermore, the machine body includes two clamping portions extending from the machine body to both ends, which elastically clamp the washing and wiping rollers, and the two clamping portions are provided with flow channels inside to allow liquid to be transported to the surface of the washing and wiping rollers.

[0007] Furthermore, the scrubbing head also includes a cleaning mechanism connecting the two clamping parts, which continuously cleans the surface of the scrubbing roller portion after the surface to be cleaned is scrubbed and maintains the humidity of the scrubbing roller surface, including forming a sealed liquid exchange zone with the scrubbing roller surface.

[0008] Furthermore, the cleaning mechanism includes a first interference portion that forms a compression with the surface of the washing and wiping roller. The first interference portion has a fixing portion and a sealing portion on both sides of the circumferential direction of the washing and wiping roller surface, and the sealing portion forms a sealed liquid exchange zone on the surface of the washing and wiping roller.

[0009] Furthermore, the cleaning mechanism also includes a water-guiding structure that is connected to the sealing part and contacts the surface of the scrubbing roller to form a watertight contact.

[0010] Furthermore, the water-guiding structure includes a water-guiding part that contacts the surface of the washing roller and a water-storing part that is connected to the contact part.

[0011] Furthermore, the water inlet extends into the sealed liquid exchange zone, with the portion of the water inlet near the sealed liquid exchange zone contacting the surface of the washing roller, and a gap being provided between the portion of the water inlet away from the sealed liquid exchange zone and the surface of the washing roller.

[0012] Furthermore, the liquid flow channel includes a clean water outlet pipe and a wastewater return pipe that connect the water tank and the sealed liquid exchange area, forming a circulating liquid flow loop between the two.

[0013] Furthermore, the clean water outlet pipe is either a single pipe or a main clean water outlet pipe that branches into two clean water outlet branch pipes via a T-joint.

[0014] Furthermore, the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at a high position in the middle or at both ends of the sealed liquid exchange area. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at a high position in the middle of the sealed liquid exchange area, it is a single inlet access; when the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at a high position at both ends of the sealed liquid exchange area, it is a dual inlet access.

[0015] Furthermore, the sewage return pipe is either a single pipe or a main-branch structure pipe formed by two sewage return branch pipes connected by a T-joint to form the main sewage return pipe.

[0016] Furthermore, the sewage return pipe is connected to the sewage outlet of the sealed liquid exchange area at the middle or both ends of the sealed liquid exchange area. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at the middle of the sealed liquid exchange area, it is a single inlet connection; when the sewage return pipe is connected to the sewage outlet of the sealed liquid exchange area at the lower ends of the sealed liquid exchange area, it is a dual outlet connection. Similarly, when the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at the higher ends of the sealed liquid exchange area, it is a dual inlet connection; when the sewage return pipe is connected to the sewage outlet of the sealed liquid exchange area at the lower middle of the sealed liquid exchange area, it is a single outlet connection.

[0017] Furthermore, the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at the lower part of the middle or both ends of the sealed liquid exchange area. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at the lower part of the middle of the sealed liquid exchange area, it is a single inlet access; when the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at the lower part of both ends of the sealed liquid exchange area, it is a dual inlet access.

[0018] Furthermore, the sewage return pipe is connected to the sewage outlet of the sealed liquid exchange area at a high position in the middle or at both ends of the sealed liquid exchange area. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at a low position in the middle of the sealed liquid exchange area, it is a single inlet connection. When the sewage return pipe is connected to the sewage outlet of the sealed liquid exchange area at a high position at both ends of the sealed liquid exchange area, it is a dual outlet connection. Similarly, when the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area at a low position at both ends of the sealed liquid exchange area, it is a dual inlet connection. When the sewage return pipe is connected to the sewage outlet of the sealed liquid exchange area at a high position in the middle of the sealed liquid exchange area, it is a single outlet connection.

[0019] Furthermore, the sealed liquid exchange zone has an arc-shaped cross-section along its length perpendicular to the horizontal direction.

[0020] Furthermore, the arc shape includes a C-shape.

[0021] The beneficial effects of the cleaning device of the present invention, which allows for changing the direction of flow channel flushing, are:

[0022] 1. This cleaning device can continuously scrub the surface to be cleaned. The direction of water delivery by the built-in pump can be reversed according to a predetermined program or signals from sensors installed in the liquid flow pipelines or channels, thereby changing the direction of water flow. This is highly effective in flushing and preventing blockage of the inner walls of all liquid flow pipelines or channels, further preventing clogging of the water flow channels.

[0023] 2. In the liquid flow channel of this cleaning device, the flow channel in the sealed liquid exchange zone follows the principle of "flow from both ends to the middle" or "flow from the middle to both ends". This significantly improves the risk of complete blockage if the flow channel in the sealed liquid exchange zone adopts a unidirectional flow channel. Blockage in any branch of the main-branch structure pipeline or the branch-main structure pipeline will not affect the normal operation of the other branch. With the real-time signal feedback from the sensors in the liquid flow channel, the risk of channel blockage can be reduced to zero.

[0024] 3. During use, users can change the water pipe connection of the cleaner according to their own preferences and needs for specific scenarios. This increases the consumer's participation in the DIY spirit of continuously improving the cleaner product and provides practical support for users to customize the product hardware according to their own preferences. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the description only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an embodiment of a cleaning device with a variable flow channel rinsing direction.

[0027] Figure 2 For along Figure 1 Schematic diagram of the washing and wiping roller in cross-section along the CC direction.

[0028] Figure 3 for Figure 2 Enlarged schematic diagram of part B in the middle.

[0029] Figure 4 for Figure 2 A partial explosion diagram of the cleaning facility.

[0030] Figure 5 This is a schematic diagram of the water flow direction in one embodiment.

[0031] Figure 6 For along Figure 5 A schematic diagram of the water flow direction in another embodiment of the stepped section in the EE direction.

[0032] Figure 7 For along Figure 5 A schematic diagram of the water flow direction in another embodiment of the stepped section in the EE direction.

[0033] Figure 8This is a schematic diagram of the water flow direction in another embodiment.

[0034] Figure 9 For along Figure 8 A schematic diagram of the water flow direction in another embodiment of the stepped section in the EE direction.

[0035] Figure 10 For along Figure 8 A schematic diagram of the water flow direction in another embodiment of the stepped section in the EE direction.

[0036] Figure label:

[0037] 1. Washing roller, 11. Absorbent layer, 12. Motor, 2. Cleaning mechanism, 3. Water tank, 4. Machine body, 5. Handle, 51. Control panel, 6. Water pump, 7. Exhaust pipe, 8. Sealed liquid exchange area.

[0038] 8. Clean water outlet pipe; 81. Clean water outlet branch pipe; 82. Clean water outlet main pipe; 83.

[0039] Sewage return pipe 9, sewage return branch pipe 91, sewage return branch pipe 92, sewage return main pipe 93

[0040] 10-way connector

[0041] First interference part 20, arc-shaped protrusion 201, fixing part 21, sealing part 22, rib plate 23, mounting part 24, top cover 25, pressure relief connector 28.

[0042] Water intake structure 61, water intake section 611, second interference section 6111, water storage section 614, straight section 616, extension section 610, first pressure relief groove G1, second pressure relief groove G2, return water inlet D1 of the sealed liquid exchange zone, return water inlet D2 of the sealed liquid exchange zone, clean water inlet D1 of the sealed liquid exchange zone, and clean water inlet D2 of the sealed liquid exchange zone.

[0043] Clamping the upper end 41, clamping the upper end shell 411, clamping the upper end bottom shell 412.

[0044] Clamping lower end 42, clamping lower end face shell 421, clamping lower end bottom shell 422, sewage return hole 4221, clean water output hole 4221.

[0045] First fixing component 62, pressure relief chamber 620, pressure relief vent 6201, third interference part 621, fourth interference part 622, arc surface 623, collapse part 624, mounting stud 625, third interference part 631, fourth interference part 632, fourth interference part 631

[0046] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The claims of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.

[0048] It should be understood that, in the description of the embodiments of the present invention, all directional indicating terms, such as "up," "down," "left," "right," "front," and "back," indicate the orientation or positional relationship based on the orientation and positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product is in use. These terms are merely for the purpose of simplifying the description of the present invention and do not explicitly or implicitly suggest that the device, element, or component referred to must have a specific orientation or specific orientational structure, and should not be construed as a limitation of the present invention. They are only used to explain the relative positional relationships and movements between the components shown in the accompanying drawings. When this specific orientation changes, the directional indication may also change accordingly.

[0049] Furthermore, in this invention, ordinal numbers such as "first" and "second" are used for distinguishing purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, the features referred to as "first" and "second" may explicitly or implicitly include at least one of those technical features. In the description of this invention, "a plurality of" means at least two, i.e., two or more, unless otherwise explicitly defined; "at least one" means one or more.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-in" should be interpreted broadly. For example, they can refer to a relatively fixed positional relationship between components, or a physically fixed connection between components; they can be detachable connections or integral structures; they can be mechanical connections or electrical signal connections; they can be direct connections or indirect connections through intermediate media or components; they can refer to the internal communication of two elements or the interaction between two elements. Unless otherwise explicitly limited in the specification, other interpretations will not achieve the corresponding functions or effects. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0051] If the controllers or control circuits involved in this invention are conventional control technologies or units for those skilled in the art, such as the control circuits of the controllers, they can be implemented by those skilled in the art using existing methods, such as simple programming. Regarding software or programs that work with hardware to achieve control results, unless the description provides a detailed explanation of the control process of the software or programs involved, this pertains to the use of existing technology or conventional techniques for those skilled in the art. The power supply also employs existing technology in the art. Furthermore, since the main inventive aspect of this invention lies in the improvement of the mechanical device, this invention will not provide a detailed explanation of the specific circuit control relationships and circuit connections.

[0052] This invention discloses many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0053] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0054] like Figures 1-10 As shown, the present invention provides an embodiment of a cleaning device with a variable flow channel scouring direction.

[0055] like Figure 1 , Figure 2As shown, the cleaning device includes a scrubbing head (not shown in the attached figure) and a handle 5 connected to the scrubbing head. The scrubbing head includes a scrubbing roller 1, a cleaning mechanism 2, a water tank 3, a body 4, a pump 6 that delivers cleaning fluid from the water tank 3 to the cleaning mechanism, and a pressure relief mechanism (not shown in the attached figure) that releases pressure in the water tank 3 during the cleaning process through an exhaust pipe 7. The scrubbing roller 1 continuously scrubs the surface to be cleaned by rolling continuously. The cleaning mechanism 2 continuously cleans a portion of the surface of the scrubbing roller 1 after scrubbing the surface and maintains the surface humidity of the scrubbing roller, and includes a sealed liquid exchange zone A. The scrubbing roller 1 is directly driven by a motor 12, or it can be driven by a motor or other means through a transmission mechanism (not shown in the attached figure), and continuous scrubbing is achieved by the scrubbing roller 1 rolling on the surface to be cleaned. The water tank 3 is detachably mounted on the body 4. The pump 6 is installed inside the body closer to the handle 5. The pump 6 is powered by a battery (not shown in the figure) built into the handle 6 through a connector (not shown in the figure) at the end of the body closer to the handle 5. The inlet of the pump 6 (not shown in the figure) is connected to the outlet of the water tank 3 (not shown in the figure) through a pipe. The outlet of the pump 6 (not shown in the figure) is connected to the inlet of the sealed liquid exchange zone A (not shown in the figure) through a pipe. The outlet of the sealed liquid exchange zone A (not shown in the figure) is connected to the return port of the water tank 3 (not shown in the figure) through a pipe. The handle 5 has a built-in control board 51 for controlling the pump 6 and the motor 12. The battery, pump 6 and motor 12 are electrically connected to the control board 51. The water tank 3 is also equipped with an exhaust port (not shown in the attached drawing) which is connected to the pressure relief connector 28 through the exhaust pipe 7. During the cleaning process, the air pressure in the water tank 3 is released through the pressure relief mechanism (not shown in the attached drawing) and finally released through the pressure relief connector 28, along with water and air, onto the surface of the scrubbing roller 1.

[0056] Specifically, such as Figure 1 , Figure 2 , Figure 5 , Figure 7 As shown, the washing head includes two clamping parts (including clamping upper end 41 and clamping lower end 42) extending from the body 4 to both ends, a washing roller 1 elastically clamped by the two clamping parts, a cleaning mechanism 2 connecting the two clamping parts and cleaning the washing roller 1, and an upper cover 25 covering the cleaning mechanism 2. The surface of the washing roller 1 is provided with a water-absorbing layer 11, and in this embodiment, the water-absorbing layer 11 is a sponge.

[0057] like Figure 2 , Figure 3 , Figure 4 , Figure 7As shown, the cleaning mechanism continuously cleans and maintains the surface humidity of the washing roller 1 after the vehicle surface has been washed and wiped. It includes forming a sealed liquid exchange zone A on the surface of the washing roller 1 and a first interference portion 20 that squeezes the liquid on the washing roller 1 into the sealed liquid exchange zone A.

[0058] The cleaning mechanism 2 adopts an integrated structure. Although the following embodiments use the cleaning mechanism 2 as multiple parts, the component numbers and names involved in the following description are consistent with this embodiment. Alternatively, those skilled in the art can make simple modifications and expansions based on the following text description and drawings, all of which are within the protection scope of the technical solution disclosed in this embodiment.

[0059] As a further improved implementation, the cleaning mechanism 2 can also be implemented by multiple parts working together. When multiple separate parts work together, the processing and manufacturing difficulty of the cleaning mechanism can be reduced.

[0060] This embodiment uses the cleaning mechanism 2 as an example of a separate component structure for illustration.

[0061] like Figure 2 , Figure 3 , Figure 4 As shown, the cleaning mechanism 2 includes a first interference portion 20 that forms a pressure against the surface of the scrubbing roller 1. The first interference portion 20 has a fixing portion 21 and a sealing portion 22 on both sides of the circumferential direction of the surface of the scrubbing roller 1. The sealing portion 22 extends outward to form a mounting portion 24 with a flat mounting surface for fixing the water-guiding structure 61. The sealing portion 22 and the water-guiding structure 61 cooperate to form a sealed liquid exchange zone A on the surface of the scrubbing roller 1. The upper cover 25 can be snapped into the slot of the fixing portion 21 (not shown in the figure) and can be detachably connected to it. The water-guiding structure 61 can connect with the sealing portion 22 to form a water-sealed contact on the surface of the scrubbing roller 1.

[0062] As a further improved implementation method, such as Figure 4 As shown, the first interference portion 20 has arc-shaped protrusions 201 pointing radially towards the washing and rubbing roller 1 at both ends near the cleaning mechanism 2 along the length direction of the washing and rubbing roller 1. The closer the arc-shaped protrusion is to the two ends of the housing, the greater the interference with the washing and rubbing roller 1. This ensures that even if there is slight misalignment during the high-speed rotation of the washing and rubbing roller 1, liquid leakage from both ends of the cleaning mechanism 2 will not occur due to insufficient interference between the washing and rubbing roller and the first interference portion 20. The arc-shaped protrusion 201 is offset from the axial direction of the washing and rubbing roller 1, and the arc can be gradually changed along or against the direction of rotation of the washing and rubbing roller 1.

[0063] like Figure 3 , Figure 4As shown in the figure, the water-guiding structure 61 includes a water-guiding part 611 in contact with the surface of the washing and rubbing roller 1, a water-storing part 614 connected to the water-guiding part 611, guide strips 612 that cause interference between the two ends of the washing and rubbing roller 1, and an extension part 610 with a first gap (not shown in the figure) between it and the surface of the washing and rubbing roller 1. The circumferential end of the water-guiding part 611 is provided with a second interference part 6111 that forms a water seal with the surface of the washing and rubbing roller 1. Guide strips 612 that cause interference between the two ends of the washing and rubbing roller 1 are respectively provided at both ends of the length direction of the water-guiding part 611, that is, the guide strips 612 are in partial contact with the surface of the washing and rubbing roller 1. The inner side of the guide strip 612 is provided with an inclined surface (not shown in the figure). The inclined surface is an arc-shaped structure. The arc-shaped structure design of the inclined surface can keep the contact pressure of each part when the inclined surface contacts the surface of the washing and rubbing roller 1 basically the same. The guide bar 612 extends towards the sealed liquid exchange zone A with a protrusion 6121. This protrusion, together with the first interference portion 20, the second interference portion 6111, the water storage portion 614, and the sealing portion 22 on both sides of the sealed liquid exchange zone A, encloses the surface of the washing roller 1 to form a sealed liquid exchange zone A. The water storage portion 614, the water intake portion 611, the guide bar 612, and the sealing portion 22 cooperate with the surface of the washing roller 1 to form the sealed liquid exchange zone A. The extension portion 610 and the water intake portion 611 are located on both sides of the water storage portion 614. The water storage portion 614 and the sealing portion 22 are fixed by a waterproof connection.

[0064] As a further improved implementation, the second interference part 6111 can adopt a strip structure, and the contact surface formed between it and the surface of the washing and rubbing roller 1 is as small as possible. This can ensure that no leakage occurs from the second interference part 6111 during the water exchange process, while also reducing the rotational resistance of the washing and rubbing roller 1 during operation. In addition, it can effectively increase the gap length in the circumferential direction of the washing and rubbing roller 1, thereby increasing the pressure relief area.

[0065] As a further improved implementation method, such as Figure 3 As shown, the water-guiding structure 61 includes a water-guiding part 611 that contacts the surface of the washing and rubbing roller 1, a water-storing part 614 connected to the water-guiding part 611, and an extension part 610 with a first gap between it and the surface of the washing and rubbing roller 1. The circumferential end of the water-guiding part 611 is provided with a second interference part 6111 that forms a watertight contact with the surface of the washing and rubbing roller 1. The water-guiding part 611 extends all the way to the inner wall of the clamping upper end 41 and the clamping lower end 42 of the two clamping parts that extend from the machine body 4 to both ends. This eliminates the need for the complex structure of guide strips 612 that extend at both ends of the length direction of the water-guiding part 611 to cause interference between the surfaces of the two ends of the washing and rubbing roller 1. This implementation can reduce the processing and manufacturing difficulty of the water-guiding structure 61.

[0066] like Figure 3 , Figure 4As shown, the cleaning mechanism 2 also includes a first fixing member 62 that cooperates with the sealing part 22 to fix the water-guiding structure 61. The upper half of the surface of the first fixing member 62 near the washing roller 1 is provided with an arc-shaped structure that matches the surface of the washing roller 1, and there is a second gap (not shown in the figure) between the arc-shaped structure and the surface of the washing roller 1 that communicates with the first gap. The lower half of the surface of the first fixing member 62 near the washing roller 1 is provided with a third interference part 621 and a fourth interference part 622 that abut against the surface of the washing roller 1. The lower half of the surface of the first fixing member 62 near the washing roller 1 is provided with an arc surface 623 that matches the surface of the washing roller 1. Furthermore, the arc surface 623 is provided with a first pressure relief groove G1 with one side boundary being the third interference part 621 and another with one side boundary being the third interference part 621, which are further concave inwards away from the surface of the washing roller 1. The second pressure relief groove G2, with the interference section 621 on one side and the fourth interference section 622 on the other, has a width in the axial dimension of the first pressure relief groove G1 pointing towards the inner wall of the two clamping parts smaller than that of the second pressure relief groove G2. At both ends of the first pressure relief groove G1, the first pressure relief space (not shown in the figure) formed with the surface of the washing and rubbing roller 1 is obliquely narrowed upwards to be flush with the arc surface 623. Along the direction of the first pressure relief groove G1 pointing towards the inner wall of the two clamping parts, the arc surface 623 has a collapsed part 624 that is obliquely downwards and further away from the surface of the washing and rubbing roller 1. The second pressure relief groove G2 extends axially along the washing and rubbing roller 1 to the inner wall of the two clamping parts. The second pressure relief groove G2, the inner wall of the two clamping parts, and part of the surface of the washing and rubbing roller 1 surround the second pressure relief space (not shown in the figure). The arc surface 623 forms a second pressure relief space through the collapsed part 624 thereon. Figure 5 The second pressure relief left inlet (not shown in the attached figure) and the second pressure relief left and right inlets (not shown in the attached figure) are shown. The first gap, the second gap, the first pressure relief space, and the second pressure relief space form a complete pressure relief chamber (not shown in the attached figure). Since the first gap, the second gap, the first pressure relief space, and the second pressure relief space form a large area projection on the surface of the washing and rubbing roller 1, when pressure relief is required, the air outlet of the pressure relief connector 28 is connected to the pressure relief chamber through a solenoid valve (not shown in the attached figure), which can be absorbed by the washing and rubbing roller 1 more quickly, thereby avoiding the phenomenon of air bubbles when the pressure is released to the washing and rubbing roller 1.

[0067] As a further improved implementation method, such as Figure 3 , Figure 4 As shown, the first fixing member 62 is an integral structure, which can further simplify the internal structure of the cleaning mechanism 2 and reduce the processing and manufacturing difficulty of the cleaning mechanism.

[0068] As a further improved implementation method, such as Figure 7 , Figure 9 , Figure 10As shown, the first fastener 62 is a split structure that can be disassembled and assembled, which can further reduce the complexity of individual parts, but the assembly process is slightly increased.

[0069] As a further improved implementation method, such as Figure 3 As shown, the air outlet of the pressure relief connector 28 is directly connected to the pressure relief chamber, which can further simplify the internal structure of the cleaning mechanism 2 and reduce the processing and manufacturing difficulty of the cleaning mechanism.

[0070] As a further improved implementation method, as needed, Figure 9 , Figure 10 As shown, the cleaning mechanism 2 also includes a fourth interference portion 631 formed on the surface of the washing roller 1 by the second fixing member 63. This fourth interference portion 631 can be a strip-shaped structure. The fourth interference portion 631 can be disposed on the first fixing member 62 or on other components. For example, when the first fixing member 62 needs to be fixed by the second fixing member 63, the fourth interference portion 631 can be disposed on the second fixing member 63. The third interference portion 621, the fourth interference portion 631, the water guiding portion 611, the second interference portion 6111, the first pressure relief space, the second pressure relief space, and the guide strip 612 form a completely closed pressure relief chamber, avoiding the appearance of bubbles on the surface of the washing roller 1 when the pressure is large.

[0071] like Figure 7 As shown, the third interference portion 631 and the fourth interference portion 632 include the outer side of the third interference portion (not shown in the figure) when viewed from the direction of the clockwise rotating washing and scrubbing roller 1, the inner side of the third interference portion (not shown in the figure) when viewed from the direction of the clockwise rotating washing and scrubbing roller 1, the outer side of the fourth interference portion (not shown in the figure), and the inner side of the fourth interference portion (not shown in the figure). Since the third interference portion 631 and the fourth interference portion 632 are located close to the surface to be cleaned, when particulate debris is present, it can be separated from the surface of the washing and scrubbing roller 1 by the action of the outer side of the third interference portion and the fourth interference portion, and accumulate on the inner side of the third interference portion and the fourth interference portion. When the third interference portion and the fourth interference portion are located on the second fixing member 63, they can be easily removed for cleaning.

[0072] As a further improved implementation, the third and fourth interference parts can be disposed on other components as needed, and can be easily removed for cleaning.

[0073] like Figure 9 , Figure 10As shown, the fourth interference portion 631 includes an outer side of the third interference portion (not shown in the figure) located on the outer side when viewed from the direction of the clockwise rotating washing roller 1, and an inner concave side of the third interference portion (not shown in the figure) located on the inner side when viewed from the direction of the clockwise rotating washing roller 1. Since the fourth interference portion 631 is located closest to the surface to be cleaned, when particulate debris is present, it can be separated from the surface of the washing roller 1 by the action of the outer side of the fourth interference portion, and accumulate on the inner concave side of the fourth interference portion. When the fourth interference portion 631 is located on the second fixing member 63, it can be easily removed for cleaning.

[0074] As a further improved implementation, the fourth interference part 631 can be disposed on other components as needed, and can be easily removed for cleaning.

[0075] like Figure 3 , Figure 4 As shown, the sealing part 22 forms a V-shaped groove (not shown in the figure) between the side opposite to the first interference part 20 and the fixing part 21. In order to improve strength and reduce weight, a rib 23 is provided between the sealing part 22 and the fixing part 21 on the side opposite to the first interference part 20.

[0076] like Figures 2 to 4 As shown, the cleaning mechanism 2 further includes a water-guiding structure 61 that is connected to the sealing part 22 and forms a watertight contact with the surface of the scrubbing roller 1. The water-guiding structure 61 includes a water-guiding part 611 that contacts the surface of the scrubbing roller 1 and a water storage part 614 connected to the water-guiding part, as well as an extension part 610 that has a pressure relief chamber between it and the surface of the scrubbing roller 1. The pressure relief chamber is connected to the air outlet of the pressure relief connector 28.

[0077] As a further improved implementation method, as needed, such as Figure 3 , Figure 4 As shown, a pressure-relieving chamber 620 is provided between the pressure relief chamber and the pressure chamber (not shown in the attached figure, which may be one of the inner cavities of the container for collecting, filtering, and outputting return water from the cleaning device). A pressure relief vent 6201 is provided between the pressure-relieving chamber 620 and the first pressure relief space. The surface area of ​​the scrubbing roller 1 forming part of the pressure relief chamber is larger than the surface area of ​​the scrubbing roller 1 forming part of the sealed liquid exchange zone A. Because the surface area of ​​the scrubbing roller 1 is smaller, the air generated is limited, while the area of ​​the pressure relief chamber is larger, making pressure relief easier.

[0078] like Figure 3 , Figure 4As shown, the water inlet 611 extends into the sealed liquid exchange zone A. The portion of the water inlet 611 near the sealed liquid exchange zone A contacts the surface 1 of the washing roller, while a gap is provided between the portion of the water inlet 611 away from the sealed liquid exchange zone A and the surface of the washing roller 1. The sealed liquid exchange zone has an arc-shaped cross-section along its length perpendicular to the horizontal direction, and this arc shape includes a C-shape.

[0079] As a further improved implementation method, as needed, such as Figure 4 As shown, the first interference part 20 has protrusions 201 at both ends. The extrusion force formed by the protrusions 201 on the surface of the washing roller 1 is less than or equal to that of the first interference part 20. The protrusions 201 can prevent the liquid on both sides of the washing roller 1 from seeping outward when squeezing water.

[0080] As a further improved implementation method, as needed, such as Figure 4 As shown, the protrusion 201 is not on the same straight line as the first interference portion 20 in the length direction. It is best to extend into the sealed liquid exchange zone A so that the squeezed liquid can be gathered in the middle and prevent leakage from both sides.

[0081] like Figure 3 , Figure 4 As shown, the straight portion 616 of the water-guiding structure 61 has several through holes (not shown in the figure). The top of the first fixing member 62 has several mounting studs 625. The mounting studs 625 mate with the through holes. Then, by passing the mounting portion 24 of the cleaning structure 2 downwards through the top of the straight portion 616 of the water-guiding structure 61, the fastening screws are driven into the mounting studs 625 on the top of the first fixing member 62, thereby realizing the installation of the main component of the cleaning mechanism 2. Furthermore, the second fixing member 63 can be detachably connected to the first fixing member 62 by an interference fit through an opening at the bottom of the first fixing member 62 (not shown in the figure). To facilitate disassembly and assembly, a gap (not shown in the figure) is left between the second fixing member 63 and the first fixing member 62 so that the compressed air during the interference fit insertion process still has some space, improving the convenience of disassembly and assembly.

[0082] like Figure 5 , Figure 8As shown, the clamping part includes an upper clamping end 41 and a lower clamping end 42. The machine body 4 extends to both the upper and lower ends to form the upper clamping end 41 and the lower clamping end 42. The upper cover 25 covers the machine body 4 to cover the internal structure of the cleaning mechanism 2. This improves the maintainability of the car wiping device and makes the exterior of the car wiping device look more complete and beautiful. The clamping part includes an upper clamping end 41 and a lower clamping end 42, which elastically clamp the washing and wiping roller 1. At the same time, the internal mounting holes and related water channels facilitate the rotation of the washing and wiping roller 1 while providing a continuous supply of water to clean the water-absorbing layer 11 of the washing and wiping roller 1. The clamping upper end 41 includes a clamping upper end shell 411 and a clamping upper end bottom shell 412. The clamping upper end bottom shell 412 is integrally formed with the machine body 4. The clamping upper end shell 411 is detachably fastened or slidably covered onto the clamping upper end bottom shell 412. The clamping upper end bottom shell 412 is provided with a washing and wiping roller engaging hole (not shown in the attached figure) for engaging the end button (not shown in the attached figure) of the washing and wiping roller 1. The inner side of the clamping upper end bottom shell 412 that engages the washing and wiping roller 1 is provided with a washing and wiping roller sliding step (not shown in the attached figure) to facilitate the sliding out of the washing and wiping roller 1.

[0083] As a further improved implementation method, as needed, such as Figure 5 , Figure 8 As shown, the clamping lower end 42 includes a clamping lower end face shell 421 and a clamping lower end bottom shell 422. The clamping lower end bottom shell 422 is integrally formed with the machine body 4. The clamping lower end face shell 421 is detachably fastened or slidably covered onto the clamping lower end bottom shell 422. The clamping lower end bottom shell 422 is provided with a washing and wiping roller engaging hole for engaging the end button (not shown in the attached figure) of the washing and wiping roller 1. The inner side of the clamping lower end bottom shell 422 engaging the washing and wiping roller 1 is provided with a washing and wiping roller sliding step to facilitate the sliding out of the washing and wiping roller 1.

[0084] As a further improved implementation method, as needed, such as Figure 2 , Figure 3 , Figure 4 As shown, a pressure relief connector 28 for connecting a pressure relief pipeline (not shown in the attached figure) is provided in the middle of the side of the first fixing member 62 facing away from the washing roller 1. The pressure relief connector 28 is provided with an air outlet. When it is necessary to release the pressure accumulated inside the car washing device, the pressure relief pipeline discharges air through the air outlet of the pressure relief connector 28 to the pressure relief chamber. The pressure relief chamber then further releases the accumulated pressure, thereby realizing the release of the pressure accumulated inside the car washing device.

[0085] As a further improved implementation, as needed, in the above embodiments, the cross-section of the first interference part 20 can be triangular, and the top of the three angles is a smooth arc structure. This can reduce the resistance generated by the large contact surface during interference, and at the same time reduce the frictional wear on the washing roller 1, and extend its service life.

[0086] As a further improved implementation method, as needed, such as Figure 4 As shown, the first fixing member 62 extends A-shaped water-collecting protrusions (not shown in the figure) radially upward along the outer surface of the washing and wiping roller 1 from both ends of the third interference portion 621. The first fixing member 62 continues to extend towards both ends at the water-collecting protrusions, while its interference fit with the outer surface of the washing and wiping roller 1 gradually decreases to zero until a gap is left between them, forming the collapsed section 624. The first fixing member 62 has a slight interference fit with the outer surface of the washing and wiping roller 1 at the third interference portion 621 and the two water-collecting protrusions, forming a fine particulate waste collection space G1 at the lower part of the second gap (i.e., the aforementioned first pressure relief groove G1 has the function of collecting fine particulate waste). On one hand, the outer side of the third interference section 621 (not shown in the attached figure) is located close to the vehicle surface. When particulate waste is present and has passed through the second pressure relief groove G2, it can be separated from the surface of the scrubbing roller 1 by the action of the outer side of the third interference section (not shown in the attached figure). When the particulate waste is adhered to the highest point of the third interference section 621 by the adhesive action of the water-absorbing layer 11 on the surface of the wetted scrubbing roller 1, under the impact of the vented air released through the air outlet, and accompanied by the sewage squeezed out by the first interference section 20 wetting the water-absorbing layer 11 again, the particulate waste forms a deposit on the concave side of the third interference section. When the third interference section 621 is located on the second fixing member 63, it can be easily removed, thereby facilitating the cleaning of the particulate waste deposited in the fine particulate waste collection space G1. On the other hand, when the vented air is released into the pressure relief chamber through the air outlet, and encounters the fine particulate waste collection space G1 which is full of particulate waste or sewage, the gap between the collapsed section 624 of the first fixing member 62 and the water-absorbing layer 11 on the surface of the washing roller 1 forms a second pressure relief left inlet (not shown in the figure) and a second pressure relief left and right inlet (not shown in the figure). After encountering the obstruction of the fine particulate waste collection space G1, the vented air will be discharged from the second pressure relief left inlet and the second pressure relief left and right inlet into the second pressure relief space, thereby realizing the secondary release of the pressure accumulated inside the car wiping device.

[0087] Example 1, as Figure 5 As shown, combined with Figure 2To ensure continuous exchange of the sealed liquid exchange zone A during operation, the sealed liquid exchange zone A can be equipped with a clean water inlet (not shown in the attached diagram) connected to the clean water outlet pipe 8, and a sewage outlet 911 and a sewage outlet 921 connected to the return water inlet D1 and the return water inlet D2, respectively. The clean water inlet is located at a high point in the middle of the sealed liquid exchange zone A, and the other end of the clean water outlet pipe 8 is connected to the clean water outlet of the water tank 3 (not shown in the attached diagram). One end of the sewage return branch pipe 91 is connected to the sewage outlet 911, and the other end is connected to a branch end of a tee connector 10. One end of the sewage return branch pipe 92 is connected to the sewage outlet 921, and the other end is connected to another branch end of the same tee connector 10. The tee connector 10 combines the two sewage branch pipes into a single sewage return main pipe 93. The sewage return branch pipe 91, sewage return branch pipe 92, tee connector 10, and sewage return main pipe 93 together form a complete sewage return pipe 9. The other end of the sewage return main pipe 93, which is also the other end of the sewage return pipe 9, is connected to the sewage inlet of the water tank 3 (not shown in the attached drawing). The height of the tee connector 10 should be lower than the lowest point at both ends of the sealed liquid exchange area A. The clean water inlet can be connected to the water tank 3 via a pump 6, and the sewage outlet can also be connected to the water tank 3 (not shown in the attached drawing) via a pump 6. The water tank 3 can be equipped with a conversion device (not shown in the attached drawing) to convert sewage into cleaning fluid, thus protecting the surface to be cleaned for a longer period of continuous washing. The cleaning fluid may include clean water or a mixture of clean water and cleaning fluid, or it may be cleaning fluid only. The cleaning fluid inlet is located at a high point in the middle of the sealed liquid exchange zone A, and the wastewater outlets 911 and 921 are located at the low points of the water storage section 614 at both ends of the sealed liquid exchange zone A, respectively. The arrows in the figure indicate the direction of liquid flow. This design allows the water flow channel to form a reasonable flow pattern from a high point in the middle to a low point at both ends in the sealed liquid exchange zone A. It makes good use of the principles of fluid dynamics. Within the effective sealed liquid exchange zone A, it utilizes the potential energy difference between the highest point in the middle and the lowest points at both ends. Within this potential energy difference area, the liquid can automatically flow from the middle to both sides, which is conducive to smoother fluid flow in the flow channel.

[0088] Figure 6 For along Figure 5 A schematic diagram of the water flow direction in a stepped cross-section in the EE direction, representing one embodiment. (See diagram below.) Figure 6As shown, driven by pump 6, the clean water outlet (not shown in the attached diagram) of water tank 3 delivers clean water along the clean water outlet pipe 8 into the highest point in the middle of the sealed liquid exchange zone A. Then, the liquid in the sealed liquid exchange zone A automatically flows from the middle to both sides. The arrow in the diagram indicates the direction of liquid flow. Through the sewage return hole 4221 of the lower end shell 422, the sewage flows into the sewage interface 921 of the sewage return branch pipe 92. The height of the tee connector 10 is lower than the lowest points at both ends of the sealed liquid exchange zone A. Then, the sewage flows through the tee connector 10 to the sewage return main pipe 93, and then back into water tank 3. The clean water outlet of water tank 3 is located at the low point of the external interface of water tank 3, and the sewage return main pipe 93 returns to the high point of the external interface of water tank 3.

[0089] Example 2, as another improved implementation method, can be carried out as needed. Figure 7 For along Figure 5 A schematic diagram of the water flow direction in another embodiment of the stepped section in the EE direction, as shown below. Figure 7 As shown, driven by pump 6, the clean water outlet (not shown in the attached diagram) of the water tank 3 delivers clean water along the clean water outlet pipe 8 into the highest point in the middle of the sealed liquid exchange zone A. Then, the liquid in the sealed liquid exchange zone A automatically flows from the middle to both sides. The arrow in the diagram indicates the direction of liquid flow. Through the sewage return hole 4221 of the lower end shell 422, the sewage flows into the sewage interface 921 of the sewage return branch pipe 92, and then through the tee connector 10 to the sewage return main pipe 93, and then back into the water tank 3. Unlike embodiment one, the clean water outlet of the water tank 3 is located at a high point of the external interface of the water tank 3, and the sewage return main pipe 93 returns to the lower point of the external interface of the water tank 3.

[0090] Example 3, as Figure 8 As shown, combined with Figure 2To ensure continuous exchange of the sealed liquid exchange zone A during operation, the sealed liquid exchange zone A can be equipped with clean water inlets D1 and D2 connected to clean water outlet branch pipes 81 and 82, and clean water outlets 811 and 821 connected to clean water inlets D1 and D2, respectively. The two clean water inlets are located at the higher points at both ends of the sealed liquid exchange zone A. The clean water outlet main pipe 83 is divided into clean water outlet branch pipes 81 and 82 via a three-way connector 10. The three-way connector 10 is higher than the highest points at both ends of the sealed liquid exchange zone A. The other end of the clean water outlet main pipe 83 is connected to the clean water outlet of the water tank 3 (not shown in the attached diagram). One end of the wastewater return pipe 9 is connected to the wastewater outlet of the sealed liquid exchange zone A (not shown in the attached diagram). The wastewater outlet of the sealed liquid exchange zone A is located at the lowest point in the middle of the sealed liquid exchange zone A. The clean water outlet branch pipe 81, the clean water outlet branch pipe 82, the tee connector 10, and the clean water outlet main pipe 83 together form a complete clean water outlet pipe 8. The wastewater outlet can also be connected to the water tank 3 (not shown in the attached diagram) via the pump 6. The wastewater outlet is located at the lowest point in the middle of the sealed liquid exchange zone A. The water tank 3 may be equipped with a conversion device (not shown in the attached diagram), such as converting wastewater into cleaning fluid, which can protect the surface to be cleaned for a longer period of continuous washing. The cleaning fluid may include clean water or a mixture of clean water and cleaning fluid, or it may be cleaning fluid only. The cleaning fluid inlet is located at the highest point at both ends of the sealed liquid exchange zone A. The clean water outlets 811 and 821 are located at both ends of the sealed liquid exchange zone A, close to or above the highest point at both ends of the sealed liquid exchange zone A. This design allows the water flow channel to form a reasonable flow pattern from the high points at both ends to the low point in the middle within the sealed liquid exchange zone A. It makes good use of the principles of fluid dynamics. Within the effective sealed liquid exchange zone A, it utilizes the potential energy difference between the highest point at both ends and the lowest point in the middle. Within this potential energy difference area, the liquid can automatically flow from both ends to the middle, which is conducive to smoother fluid flow in the channel.

[0091] Figure 9 For along Figure 8 A schematic diagram of the water flow direction in a stepped cross-section in the EE direction, representing one embodiment. (See diagram below.) Figure 9 As shown, driven by pump 6, the clean water outlet (not shown in the attached diagram) of water tank 3 is split into two streams along the clean water outlet pipe 8 through a three-way connector 10, delivering clean water into the highest points at both ends of the sealed liquid exchange zone A. Then, the liquid in the sealed liquid exchange zone A automatically flows from both ends towards the middle, and through the sewage return hole 4221 of the lower bottom shell 422, the sewage flows into the sewage inlet (not shown in the attached diagram) of the sewage return pipe 9, and then back into water tank 3. The clean water outlet of water tank 3 is located at a high point of the external interface of water tank 3, and the sewage return pipe 9 returns the water to a low point of the external interface of water tank 3.

[0092] Example 4, as another improved implementation, can be carried out as needed. Figure 10 For along Figure 8 A schematic diagram of the water flow direction in another embodiment of the stepped section in the EE direction, as shown below. Figure 10 As shown, driven by pump 6, the clean water outlet (not shown in the attached diagram) of water tank 3 is split into two streams along the clean water outlet pipe 8 and a three-way connector 10, delivering clean water into the highest points at both ends of the sealed liquid exchange zone A. Then, the liquid in the sealed liquid exchange zone A automatically flows from both ends towards the middle, and through the sewage return hole 4221 of the lower bottom shell 422, the sewage flows into the sewage inlet (not shown in the attached diagram) of the sewage return pipe 9, and then back into water tank 3. Unlike embodiment three, the clean water outlet of water tank 3 is located at the lower part of the external interface of water tank 3, and the sewage return pipe 9 returns the water to the higher part of the external interface of water tank 3.

[0093] It should be noted that in all the embodiments described above, the direction of water delivery by pump 6 can be changed by the control board 51 executing a "reverse command" based on a predetermined program or by the signal fed back from the pressure sensors in the clean water output pipe 8 and the sewage return pipe 9. Once the control board 51 executes the "reverse command," the direction of water delivery by pump 6 is reversed, which plays a very beneficial role in flushing and preventing blockage of the inner walls of all clean water output pipes 8 and sewage return pipes 9, and can further prevent blockage of the water flow channels. Of course, in the reverse operation state of the water pump, the unconventional state of water flow "from low to high" in the sealed liquid exchange zone A in all the aforementioned embodiments is only temporary, and the height dimension of the sealed liquid exchange zone A is also small, and the potential energy difference overcome is also small. When the "reverse command" is executed and the normal operation state is restored, the water flow in the sealed liquid exchange zone A is still in the normal state of "from high to low," and the potential energy difference can still be used to make the water flow automatically.

[0094] As a further improved implementation, the sensor can also be located in other positions on the fuselage.

[0095] The water pipe connection methods in the above four embodiments are not exhaustive of all possible connection methods. The connection methods of one-to-two, one-to-many main pipe and branch pipes that basically follow the principle of "water flows downhill" are all within the protection scope of this application. Even connection methods that simply violate the principle of "water flows downhill" are within the protection scope of this application. Since the height potential energy difference of each inlet and outlet of the sealed liquid exchange zone A in the entire pipeline circuit is negligible compared to the external output power of pump 6, the unconventional water pipe connection methods in specific application scenarios are also within the protection scope of this application.

[0096] This cleaning device enables continuous scrubbing of surfaces. The built-in pump can reverse the direction of water flow based on a predetermined program or signals from sensors installed in the liquid flow pipes or channels. This effectively changes the direction of water flow, significantly improving the flushing and clogging prevention of the inner walls of all liquid flow pipes or channels. It further prevents blockages in the water flow channels.

[0097] In the liquid flow channel of this cleaning device, the flow in the sealed liquid exchange zone follows the principle of "flow from both ends to the middle" or "flow from the middle to both ends," which significantly improves the risk of complete blockage if the flow channel in the sealed liquid exchange zone adopts a unidirectional flow channel. Blockage in any branch of the main-branch structure pipeline or the branch-main structure pipeline will not affect the normal operation of the other branch. With the real-time signal feedback from the sensors in the liquid flow channel, the risk of channel blockage can be reduced to zero.

[0098] Of course, users can change the water pipe connection of the cleaner according to their own preferences and needs for specific scenarios during use. This increases the consumer's participation in the DIY spirit of continuously improving the cleaner product and provides practical support for users to customize the product hardware according to their own preferences.

[0099] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cleaning device with a variable flow channel rinsing direction, comprising a scrubbing head and a handle connected to the scrubbing head, characterized in that, The scrubbing head includes a body, a water tank, scrubbing rollers, and a liquid flow channel, among which, The scrubbing roller achieves continuous scrubbing by continuously rolling on the surface to be cleaned; The water tank is detached and installed on the machine body. The machine body is equipped with a pump that delivers the cleaning liquid in the water tank to the washing and wiping roller and a liquid flow channel. The machine body includes two clamping parts that extend from the machine body to both ends. The two clamping parts elastically clamp the washing and wiping roller, and their interiors are equipped with flow channels that allow liquid to be delivered to the surface of the washing and wiping roller. The washing head also includes a cleaning mechanism connecting the two clamping parts. The cleaning mechanism includes a first interference part that forms a compression with the surface of the washing roller. The first interference part is provided with a fixing part and a sealing part on both sides of the circumferential direction of the surface of the washing roller. The sealing part forms a sealed liquid exchange area on the surface of the washing roller. The cleaning mechanism continuously cleans the surface of the washing roller after the surface to be cleaned is washed and maintains the humidity of the surface of the washing roller to wash the vehicle surface. The handle contains a control panel that allows the pump to execute reverse commands according to a set program or signals from sensors located on the machine body, thereby changing the direction of liquid delivery.

2. The cleaning device with variable flow channel flushing direction according to claim 1, characterized in that, The first interference part has arc-shaped protrusions that are more radially oriented towards the washing and rubbing roller at both ends near the cleaning mechanism along the length direction of the washing and rubbing roller. The closer the arc-shaped protrusions are to both ends of the housing, the greater the interference with the washing and rubbing roller. The washing and rubbing roller rolls on the surface to be cleaned to achieve continuous washing and rubbing. The washing and wiping roller is directly driven by a motor, or the washing and wiping roller is driven by a motor through a transmission mechanism.

3. The cleaning device with variable flow channel flushing direction according to claim 2, characterized in that, The pump is installed inside the main body near the handle. The pump is powered by a battery built into the handle via a connector at the handle end of the main body. The pump's inlet is connected to the water tank's outlet via a clean water output pipe. The pump's outlet is connected to the inlet of the sealed liquid exchange zone via a pipe. The outlet of the sealed liquid exchange zone is connected to the water tank's return outlet via a wastewater return pipe. Pressure sensors are installed in the clean water output pipe and the wastewater return pipe. The battery, pump, and motor are electrically connected to the control board, which controls the pump and motor. The water tank is also equipped with an exhaust port, which is connected to the pressure relief connector via an exhaust pipe. During the cleaning process, the air pressure in the water tank is released through the pressure relief mechanism and finally released through the pressure relief connector, along with water and air, onto the surface of the scrubbing roller.

4. The cleaning device with variable flow channel scouring direction according to claim 1, characterized in that, The scrubbing head also includes a cover that fits onto the cleaning mechanism, and the surface of the scrubbing roller is provided with an absorbent layer that can absorb water.

5. The cleaning device with variable flow channel flushing direction according to claim 4, characterized in that, The cleaning mechanism also includes a water-guiding structure that is connected to the sealing part and contacts the surface of the scrubbing roller to form a watertight contact. The sealing part extends outward to fix the water-guiding structure. The sealing part and the water-guiding structure cooperate to form a sealed liquid exchange area on the surface of the scrubbing roller. The top cover can be snapped into the slot of the fixing part.

6. The cleaning device with variable flow channel scouring direction according to claim 5, characterized in that, The water-guiding structure includes a water-guiding part that contacts the surface of the scrubbing roller and a water-storing part that is connected to the contact part.

7. The cleaning device with variable flow channel flushing direction according to claim 6, characterized in that, The water inlet extends into the sealed liquid exchange zone. The portion of the water inlet near the sealed liquid exchange zone contacts the surface of the washing and wiping roller, while a gap is provided between the portion of the water inlet away from the sealed liquid exchange zone and the surface of the washing and wiping roller.

8. The cleaning device with variable flow channel flushing direction according to claim 3, characterized in that, The liquid flow channel includes a clean water outlet pipe and a wastewater return pipe that connect the water tank and the sealed liquid exchange area, forming a circulating liquid flow loop between the two.

9. The cleaning device with variable flow channel flushing direction according to claim 8, characterized in that, The clean water outlet pipe is either a single pipe or a main clean water outlet pipe that branches into two clean water outlet branch pipes through a T-joint.

10. The cleaning device with variable flow channel scouring direction according to claim 9, characterized in that, The clean water outlet pipe connects to the clean water inlet of the sealed liquid exchange zone, which is located in the middle or at either end of the sealed liquid exchange zone. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area, it is a single inlet connection when the clean water inlet is located at a high point in the middle of the sealed liquid exchange area. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area and is located at the high point at both ends of the sealed liquid exchange area, it is a dual-inlet connection.

11. The cleaning device with variable flow channel scouring direction according to claim 8, characterized in that, The sewage return pipe is either a single pipe or two sewage return branch pipes connected by a T-joint to form a main sewage return pipe with a branch structure.

12. The cleaning device with variable flow channel scouring direction according to claim 11, characterized in that, The wastewater return pipe connects to the wastewater outlet of the sealed liquid exchange zone, which is located at the lower center or both ends of the sealed liquid exchange zone. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area and is located at a high point in the middle of the sealed liquid exchange area, it is a single inlet connection. When the wastewater return pipe is connected to the wastewater outlet of the sealed liquid exchange area and is located at a low point at both ends of the sealed liquid exchange area, it is a dual outlet connection. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area and is located at the high point at both ends of the sealed liquid exchange area, it is a dual-inlet connection. When the sewage return pipe is connected to the sewage outlet of the sealed liquid exchange area and is located at the low point in the middle of the sealed liquid exchange area, it is a single-outlet connection.

13. The cleaning device with variable flow channel scouring direction according to claim 9, characterized in that, The clean water outlet pipe connects to the clean water inlet of the sealed liquid exchange zone, which is located in the middle or at the lower ends of the sealed liquid exchange zone. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange zone, it is a single inlet connection when the clean water inlet is located at a low point in the middle of the sealed liquid exchange zone. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area and is located at the lower ends of the sealed liquid exchange area, it is a dual-inlet connection.

14. The cleaning device with variable flow channel scouring direction according to claim 13, characterized in that, The wastewater return pipe connects to the wastewater outlet of the sealed liquid exchange zone, which is located in the middle or at either end of the sealed liquid exchange zone at a high position. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area and is located at the lower middle part of the sealed liquid exchange area, it is a single inlet connection. When the sewage return pipe is connected to the sewage outlet of the sealed liquid exchange area and is located at the higher ends of the sealed liquid exchange area, it is a dual outlet connection. When the clean water outlet pipe is connected to the clean water inlet of the sealed liquid exchange area and is located at the lower ends of the sealed liquid exchange area, it is a dual-inlet connection. When the sewage return pipe is connected to the sewage outlet of the sealed liquid exchange area and is located at the higher middle part of the sealed liquid exchange area, it is a single-outlet connection.

15. The cleaning device with variable flow channel scouring direction according to claim 3, characterized in that, The sealed liquid exchange zone has a circular arc-shaped cross-section along its length perpendicular to the direction of its length.

16. The cleaning device with variable flow channel scouring direction according to claim 15, characterized in that, Arc shapes include C-shapes.

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