A pressure relief mechanism for a scrubbing vehicle

Abstract

The application belongs to the technical field of vehicle cleaning, and discloses a pressure relief mechanism of a washing and scrubbing vehicle. The pressure relief mechanism of the washing and scrubbing vehicle comprises a pressure relief cavity which is arranged on the surface of a washing and scrubbing roller and is communicated with a pressure cavity. In use, the pressure generated by the collected liquid in the using process can be released through the washing and scrubbing roller, and no bubbles and noise are discharged in the releasing process.

Description

Technical Field

[0001] This invention relates to the field of vehicle cleaning technology, and more particularly to a pressure relief mechanism for washing and wiping vehicles. Background Technology

[0002] Vehicle washing usually requires continuous washing to achieve high cleaning efficiency. However, when using washing rollers, the surface of which is usually made of sponge, wastewater is collected after the roller is squeezed, and the squeezed-out air is also collected, causing an increase in pressure in the liquid collection chamber. Effectively releasing this pressure is a problem that needs to be solved. Summary of the Invention

[0003] The main technical problem solved by this invention is to provide a pressure relief mechanism for a washing and wiping vehicle. This mechanism can effectively release the air generated during the washing and wiping process, while avoiding the generation of bubbles or noise during the release process.

[0004] To solve the above-mentioned technical problems, the present invention provides a pressure relief mechanism for a washing and wiping vehicle, which includes a pressure relief chamber that communicates with a pressure chamber at a corresponding position on the surface of the washing and wiping roller.

[0005] Furthermore, the pressure relief chamber includes a water-guiding structure that forms a watertight contact with the surface of the washing and rubbing roller. The water-guiding structure includes a water-guiding part that contacts the surface of the washing and rubbing roller. The water-guiding part partially contacts the surface of the washing and rubbing roller, and a gap is provided between the water-guiding part away from the surface of the washing and rubbing roller and the surface of the washing and rubbing roller.

[0006] Furthermore, the pressure relief mechanism of the washing and wiping vehicle also includes a cleaning mechanism, which includes a first interference part that forms a compression with the surface of the washing and wiping roller. The first interference part is provided with a fixing part and a sealing part on both sides of the circumferential direction of the washing and wiping roller surface, and the sealing part forms a sealed liquid exchange zone on the surface of the washing and wiping roller.

[0007] 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.

[0008] Furthermore, the water-guiding structure includes a water-guiding part that contacts the surface of the washing roller and a water-storing part connected to the contact part.

[0009] 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.

[0010] Furthermore, the pressure relief chamber is a sealed structure.

[0011] Furthermore, the pressure relief chamber also includes an interference strip that is parallel to the axial direction of the washing and wiping roller and forms a semi-closed shape in the circumferential direction of the washing and wiping roller, located near the surface of the washing and wiping roller.

[0012] Furthermore, the two ends of the interference strip are provided with water-collecting protrusions for depositing particulate waste.

[0013] Furthermore, the interference strip has collapse sections at both ends for releasing gas pressure, and the leak-proof protrusion is located at the junction of the collapse section and the interference section, facing away from the inner side of the washing roller end and extending away from the vehicle surface.

[0014] Furthermore, a pressure-relieving chamber is provided between the pressure relief chamber and the pressure chamber, and a pressure relief hole is provided between the pressure-relieving chamber and the pressure relief chamber.

[0015] Furthermore, the surface area of ​​the wash roller that forms part of the pressure relief chamber is greater than the surface area of ​​the wash roller that forms part of the sealed liquid exchange zone.

[0016] This invention relates to a pressure relief mechanism for a washing and wiping vehicle, comprising a pressure relief chamber connected to a pressure chamber on the surface of the washing and wiping roller. During use, the pressure generated by the collected liquid during operation is released through the washing and wiping roller via the pressure relief chamber, without the discharge of air bubbles or other contaminants. Simultaneously, a pressure buffer chamber is provided between the pressure relief chamber and the pressure chamber, and a pressure relief hole is provided between the pressure buffer chamber and the pressure relief chamber. This allows for a preliminary pressure release during pressure relief, thereby preventing noise from entering the pressure relief chamber. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of an embodiment of the pressure relief mechanism for a wash truck.

[0019] Figure 2 For along Figure 1 Schematic diagram of the washing and wiping roller in cross section of the AA direction.

[0020] Figure 3 for Figure 2 Enlarged schematic diagram of section C.

[0021] Figure 4 for Figure 2 A schematic diagram of the structure without the scrubbing roller.

[0022] Figure 5 for Figure 2 Schematic diagram of the structure exploded.

[0023] Figure 6 This is an exploded view of an embodiment of the water diversion structure.

[0024] Figure 7 This is a schematic diagram of an embodiment of the pressure relief mechanism for a washing and wiping vehicle without washing and wiping rollers installed.

[0025] Figure 8 This is a front view of an embodiment of the car washing and wiping device.

[0026] Figure 9 A schematic diagram of the depressurization air circuit for a washing and wiping vehicle device without washing and wiping rollers installed.

[0027] Figure 10 This is a complete schematic diagram of the water-guiding structure along the axial direction of the washing and wiping roller.

[0028] Figure label:

[0029] 1. Washing roller, 11. Absorbent layer, 12. Motor, 2. Cleaning mechanism, 3. Housing, A. Sealed liquid exchange area, B. Pressure relief chamber, B1. First gap, B2. Air outlet, 27. Housing cover, 34.

[0030] First fastener 22

[0031] Gap 221, pressure relief hole 222, curved surface 223

[0032] Second fastener 23

[0033] Third Interference Section 231, Outer Side of Third Interference Section 2311, Inner Side of Third Interference Section 2312, Collapsed Section 232, Water-Collecting Protrusion 234, Fine Particulate Waste Collection Space G

[0034] Interference component 20

[0035] First interference part 200, fixing part 201, sealing part 202, rib plate 203, housing cover snap-fit ​​groove 205, mounting part 207, pressure relief chamber 220

[0036] Water diversion structure 21

[0037] Extension 210, water intake 211, second interference section 2111, guide bar 212, inclined surface 2121, protrusion 2122, water storage section 214, straight section 216.

[0038] The realization of the objectives, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] This invention discloses many different embodiments or examples for implementing different 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.

[0045] 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.

[0046] like Figures 1-10 As shown, the present invention provides an embodiment of a pressure relief mechanism for a washing and wiping vehicle.

[0047] like Figure 1 , Figure 2 As shown, the car cleaning and pressure relief mechanism includes a cleaning head and a handle (not shown in the figure) connected to the cleaning head. The cleaning head includes a housing 3, a cleaning roller 1 and a cleaning mechanism 2 mounted on the housing 3. The cleaning roller 1 continuously cleans the vehicle surface by rolling continuously. The cleaning mechanism 2 continuously cleans the surface of the cleaning roller after cleaning the vehicle surface and maintains the surface humidity of the cleaning roller. The cleaning mechanism 2 includes a sealed liquid exchange zone A and an interference part assembly 20 that squeezes the liquid on the cleaning roller 1 into the sealed liquid exchange zone A.

[0048] Specifically, such as Figure 1 , Figure 2 As shown, the surface of the washing and wiping roller 1 is provided with a water-absorbing layer 11, which is a sponge in this embodiment. The washing and wiping roller 1 is directly driven by a motor 12, or it can be driven by a motor or the like through a transmission mechanism (not shown in the figure). Continuous washing and wiping is achieved by the washing and wiping roller rolling on the surface of the vehicle.

[0049] The cleaning mechanism 2 can be an integral structure. Although the following embodiments use multiple parts to implement the cleaning mechanism 2, the component numbers and names mentioned 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.

[0050] 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.

[0051] This embodiment uses the cleaning mechanism 2 as an example of a separate component structure for illustration.

[0052] like Figure 2 , Figure 4 , Figure 5 As shown, the interference assembly 20 includes a first interference section 200 that forms a pressure with the surface of the washing roller 1. The first interference section 200 has a fixing section 201 and a sealing section 202 on both sides of the circumferential direction of the washing roller 1 surface. The sealing section 202 extends outward to form a mounting section 207 with a flat mounting surface for fixing the water-guiding structure 21. The sealing section 202 and the water-guiding structure 21 cooperate to form a sealed liquid exchange zone A on the surface of the washing roller 1. The fixing section 201 can be fixed to the housing 3. The water-guiding structure 21 can connect with the sealing section 202 to form a water-sealed contact on the surface of the washing roller 1.

[0053] like Figure 3 , Figure 4 , Figure 5As shown, the water-guiding structure 21 includes a water-guiding part 211 in contact with the surface of the washing and rubbing roller 1, a water-storing part 214 connected to the water-guiding part 211, guide strips 212 that cause interference between the two ends of the washing and rubbing roller 1, and an extension part 210 with a first gap B1 between it and the surface of the washing and rubbing roller 1. The circumferential end of the water-guiding part 211 is provided with a second interference part 2111 that forms a water seal with the surface of the washing and rubbing roller 1. Guide strips 212 that cause interference between the two ends of the washing and rubbing roller 1 are provided at both ends of the length direction of the water-guiding part 211, that is, the guide strips 212 are in partial contact with the surface of the washing and rubbing roller 1. The inner side of the guide strip 212 is provided with an inclined surface 2121. The inclined surface 2121 has an arc-shaped structure. The arc-shaped structure design of the inclined surface 2121 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 strip 212 extends towards the sealed liquid exchange zone A with protrusions 2122. These protrusions 2122, together with the first interference portion 200, the second interference portion 2111, the water storage portion 214, and the sealing portion 202, enclose the surface of the washing roller 1 to form a sealed liquid exchange zone A. The water storage portion 214, the water intake portion 211, the guide strip 212, and the sealing portion 202 cooperate with the surface of the washing roller 1 to form the sealed liquid exchange zone A. The extension portion 210 and the water intake portion 211 are located on both sides of the water storage portion 214. The water storage portion 214 and the sealing portion 202 are fixed together using a waterproof connection.

[0054] As a further improved implementation, the second interference part 2111 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 2111 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.

[0055] like Figure 2 , Figure 3 , Figure 4 As shown, the cleaning mechanism 2 also includes a first fixing member 22 and a second fixing member 23 that cooperate with the sealing part 202 to fix the water-guiding structure 21. The first fixing member 22 needs to be fixed by the second fixing member 23. The surface of the first fixing member 22 near the washing and rubbing roller 1 is set with an arc-shaped structure, and there is a second gap B2 between the arc-shaped structure and the surface of the washing and rubbing roller 1 that communicates with the first gap B1. The first gap B1 and the second gap B2 form a pressure relief chamber B. Since the first gap B1 and the second gap B2 form a large area projection on the surface of the washing and rubbing roller 1, when pressure relief is required, the pressure relief outlet 27 is connected to the pressure relief chamber B through a solenoid valve (not shown in the figure), which can be absorbed by the washing and rubbing roller 1 more quickly, thereby avoiding the phenomenon of bubbles when the pressure is released to the washing and rubbing roller 1.

[0056] As a further improved implementation method, such as Figure 3 As shown, the pressure relief outlet 27 is directly connected to the pressure relief chamber B, which can further simplify the internal structure of the cleaning mechanism 2 and reduce the processing and manufacturing difficulty of the cleaning mechanism.

[0057] As needed, the pressure relief chamber B is a semi-sealed structure. This chamber also includes a third interference portion 231 located near the vehicle surface of the washing roller 1, parallel to the axis of the washing roller 1 and forming a semi-closed shape circumferentially around the washing roller. This third interference portion can be a separate detachable part or a part of a component. The pressure relief chamber B is called a "semi-sealed structure" primarily because the third interference portion only forms a semi-closed shape circumferentially around the washing roller in its own length direction; gaps remain between the third interference portion and the washing roller 1 at both ends in the length direction. Details are provided in the following paragraphs describing the pressure relief channel and in the appendix of the instruction manual. Figure 3 , Figure 7 , Figure 9 The description provides a detailed description of the pressure relief chamber B, which has pressure relief channels at both ends near the washing roller 1. Therefore, the pressure relief chamber B is a semi-sealed structure.

[0058] As a further improved implementation method, as needed, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the pressure relief mechanism of the washing and wiping vehicle also includes a cleaning mechanism 2. This cleaning mechanism further includes a third interference portion 231 formed on the surface of the washing and wiping roller 1 by the second fixing member 23. The third interference portion 231 can be a strip-shaped structure, such as an interference strip. The third interference portion 231 can be set on the first fixing member 22 or on other components. For example, when the first fixing member 22 needs to be fixed by the second fixing member 23, the third interference portion 231 can be set on the second fixing member 23. The third interference portion 231 is located close to the vehicle surface and parallel to the axis of the washing and wiping roller 1. The third interference portion 231, the water guiding portion 211, the second interference portion 2111, and the guide strip 212 form a closed pressure relief chamber B, which avoids the appearance of bubbles on the surface of the washing and wiping roller 1 when the pressure is large.

[0059] like Figure 5 As shown, the third interference portion 231 includes an outer side 2311 of the third interference portion located on the outer side when viewed from the direction of the clockwise rotating washing roller 1, and an inner side 2312 of the third interference portion located on the inner side when viewed from the direction of the clockwise rotating washing roller 1. Since the third interference portion 231 is located closest to the vehicle surface, when particulate debris is present, it can be separated from the surface of the washing roller 1 by the action of the outer side 2311, and aggregated on the inner side 2312. When the third interference portion 231 is located on the second fixing member 23, it can be easily removed for cleaning.

[0060] As a further improved implementation, the third interference part 231 can be disposed on other components as needed, and can be easily removed for cleaning.

[0061] As a further improved implementation method, as needed, such as Figure 7 , Figure 9 As shown, the second fixing member 23 extends A-shaped water-collecting protrusions 234 at both ends of the third interference portion 231 along the length direction and simultaneously radially upward along the outer surface of the scrubbing roller 1. The second fixing member 23 continues to extend towards both ends at the water-collecting protrusions 234, while the interference fit between it and the outer surface of the scrubbing roller 1 gradually decreases to zero until a gap is left between them, forming a collapsed section 232. The second fixing member 23 has a slight interference fit with the outer surface of the scrubbing roller 1 at the third interference portion 231 and the two water-collecting protrusions 234, forming a collection space G at the lower part of the second gap B2. Further, the collection space includes a fine particulate waste collection space. On one hand, the outer side 2311 of the third interference section 231 is closest to the vehicle surface. When particulate waste is present, it can be separated from the surface of the scrubbing roller 1 by the action of the outer side 2311 of the third interference section. When the particulate waste is adhered to the highest point of the third interference section 231 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 27, and accompanied by the water-absorbing layer 11 being wetted again by the sewage squeezed out by the first interference section 200, the particulate waste forms a deposit on the concave side 2312 of the third interference section. When the third interference section 231 is located on the second fixing member 23, it can be easily removed, thereby facilitating the cleaning of the particulate waste deposited in the fine particulate waste collection space G. On the other hand, when the vented air is released into the pressure relief chamber B through the air outlet 27 and encounters the fine particulate waste collection space G filled with particulate waste or sewage, the first exhaust gap D1 and the second exhaust gap D2 are formed because there is a gap between the collapsed section 232 of the second fixing member 23 and the water-absorbing layer 11 on the surface of the washing roller 1. After encountering the obstruction of the fine particulate waste collection space G, the vented air will be discharged from the first exhaust gap D1 and the second exhaust gap D2 to the outside of the car washing device, thereby releasing the pressure accumulated inside the car washing device.

[0062] like Figure 3 As shown, a pressure-relieving chamber 220 is provided between the pressure relief chamber B 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 washing and wiping vehicle device). A pressure relief hole 222 is provided between the pressure-relieving chamber 220 and the pressure relief chamber B. The surface area of ​​the washing and wiping roller 1 forming part of the pressure relief chamber B is larger than the surface area of ​​the washing and wiping roller 1 forming part of the sealed liquid exchange zone A. Because the surface area of ​​the squeezing washing and wiping roller 1 is smaller, the air generated is limited, while the area of ​​the pressure relief chamber B is larger, making pressure relief easier.

[0063] like Figure 2 , Figure 5 As shown, the sealing part 202 forms a V-shaped groove (not shown in the figure) between the sealing part 202 and the fixing part 201 on the side opposite to the first interference part 200. In order to improve strength and reduce weight, a rib 203 is provided between the sealing part 202 and the fixing part 201 on the side opposite to the first interference part 200.

[0064] like Figures 2 to 5 As shown, the cleaning mechanism 2 further includes a water-guiding structure 21 that is connected to the sealing part 202 and forms a watertight contact with the surface of the scrubbing roller 1. The water-guiding structure 21 includes a water-guiding part 211 that contacts the surface of the scrubbing roller 1 and a water storage part 214 connected to the water-guiding part 211, as well as an extension part 210 that has a pressure relief chamber B between it and the surface of the scrubbing roller 1. The pressure relief chamber B is connected to the pressure relief outlet 27.

[0065] like Figure 2 , Figure 3 As shown, the water inlet 211 extends into the sealed liquid exchange zone A. The portion of the water inlet 211 near the sealed liquid exchange zone A contacts the surface 1 of the washing roller, while a gap B1 is provided between the portion of the water inlet 211 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.

[0066] like Figure 6 , Figure 7 As shown, the straight portion 216 of the water-guiding structure 21 has several through holes (not shown in the figure), and the top of the first fixing member 22 has several nut posts (not shown in the figure). The nut posts mate with the through holes. Then, by driving the fastening screws down through the mounting portion 207 of the interference part assembly 20 through the top of the straight portion 216 of the water-guiding structure 21, the fastening screws can be driven into the nut posts on the top of the first fixing member 22, thereby realizing the installation of the main component of the cleaning mechanism 2. Furthermore, the second fixing member 23 can be detachably connected to the first fixing member 22 by an interference fit through an opening at the bottom of the first fixing member 22. To facilitate disassembly and assembly, a gap 221 is left between the second fixing member 23 and the first fixing member 22 so that the compressed air during the interference fit insertion process still has some space, improving the convenience of disassembly and assembly.

[0067] like Figure 6 , Figure 7As shown, in the middle of the cleaning mechanism 2 assembled by the water-guiding structure 21, the first fixing member 22, and the second fixing member 23, there is a pressure relief hole 222 communicating with the air outlet 27. The main part of the pressure relief hole 222 communicating with the air outlet 27 is located in the middle of the first fixing member 22. The side of the first fixing member 22 facing the surface of the washing and rubbing roller 1 is an arc surface 223 with a similar curvature. The arc surface 223, the pressure relief hole 222, and the surface of the washing and rubbing roller 1 together form a second gap B2. The upper half of the pressure relief hole 222 is located in the middle of the water-guiding structure 21, and the lower half of the pressure relief hole 222 is located in the middle of the second fixing member 23. The two upper and lower half guide portions together form a complete guide portion of the pressure relief hole 222. The guide portion of the pressure relief hole 222 can increase the air outlet area of ​​the pressure relief hole 222, further reducing the air outlet velocity. Simultaneously, it is more conducive to the even dispersion of the discharged air onto the surface of the washing roller 1, further reducing the noise generated by the washing vehicle device during pressure relief and exhaust. For example... Figure 8 As shown, combined with Figure 2 To ensure continuous exchange of fluids in the sealed fluid exchange zone A during operation, the zone can be equipped with a clean water inlet A1 connected to the outlet pipe 41 and a wastewater outlet A2 connected to the return water inlet 51. The clean water inlet can be connected to the cleaning fluid container (not shown in the attached diagram) via a water pump (not shown in the diagram), and the wastewater outlet can also be connected to the wastewater container (not shown in the attached diagram) via a water pump. A conversion device (not shown in the attached diagram) can be provided between the wastewater container and the cleaning fluid container to convert wastewater into cleaning fluid, thus protecting the vehicle from continuous washing over extended periods. The cleaning fluid can include clean water, a mixture of clean water and cleaning fluid, or only cleaning fluid. The cleaning fluid inlet and wastewater outlet are located at opposite ends of the sealed fluid exchange zone.

[0068] 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 pressure relief mechanism for a wash truck, characterized in that, include: A scrubbing head, comprising a housing, a scrubbing roller mounted on the housing, and a cleaning mechanism, the cleaning mechanism comprising a sealed liquid exchange zone and an interference part assembly for squeezing liquid from the scrubbing roller into the sealed liquid exchange zone; The pressure relief chamber is located on the surface of the washing and rubbing roller and is connected to the pressure chamber. Pressure relief channels are provided near the two ends of the washing and rubbing roller. A pressure relief chamber is provided between the pressure relief chamber and the pressure chamber. A pressure relief hole is provided between the pressure relief chamber and the pressure relief chamber.

2. The pressure relief mechanism for the washing vehicle according to claim 1, characterized in that, The interference component includes a first interference part that forms a compression with the surface of the washing and rubbing roller. The first interference structure is provided with a fixing part and a sealing part on both sides of the circumferential direction of the surface of the washing and rubbing roller. 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 zone on the surface of the washing and rubbing roller. The fixing part can be fixed to the housing. The water-guiding structure can be connected to the sealing part to contact the surface of the washing and rubbing roller to form a water-sealed contact. The pressure relief chamber includes a water-guiding structure, which includes a water-guiding part that contacts the surface of the washing and rubbing roller. The water-guiding part partially contacts the surface of the washing and rubbing roller, and a gap is provided between the water-guiding part away from the surface of the washing and rubbing roller and the surface of the washing and rubbing roller. The water-guiding structure includes a water-guiding part that contacts the surface of the washing and rubbing roller, a water storage part connected to the water-guiding part, a guide strip that causes interference between the two ends of the washing and rubbing roller, and an extension part that has a first gap with the surface of the washing and rubbing roller.

3. The pressure relief mechanism for the washing vehicle according to claim 2, characterized in that, The circumferential end of the water inlet section is provided with a second interference section that forms a water seal with the surface of the washing and rubbing roller, and guide strips are provided at both ends of the water inlet section to cause interference between the surfaces of the two ends of the washing and rubbing roller.

4. The pressure relief mechanism for the washing vehicle according to claim 3, characterized in that, The inner side of the guide bar is set as an inclined surface, which is an arc structure. The guide bar extends with a protrusion in the direction of the sealed liquid exchange area. The protrusion, together with the first interference part, the second interference part, the water storage part and the sealing part on both sides of the sealed liquid exchange area, surrounds the surface of the washing and rubbing roller to form a sealed washing and rubbing roller sealed liquid exchange area.

5. The pressure relief mechanism for the wash truck according to claim 4, 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.

6. The pressure relief mechanism for the washing vehicle according to claim 5, 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.

7. The pressure relief mechanism for the wash truck according to claim 1, characterized in that, The pressure relief chamber is a sealed structure.

8. The pressure relief mechanism for the wash truck according to claim 7, characterized in that, The pressure relief chamber also includes interference strips that are parallel to the axial direction of the washing and wiping roller and form a semi-closed shape in the circumferential direction of the washing and wiping roller, located near the surface of the washing and wiping roller on the vehicle surface.

9. The pressure relief mechanism for the wash truck according to claim 1, characterized in that, The two ends of the interference bar are equipped with water-collecting protrusions for depositing particulate waste.

10. The pressure relief mechanism for the washing vehicle according to claim 9, characterized in that, The two ends of the interference strip are provided with collapse sections for relieving gas pressure. The anti-leakage protrusion is located at the junction of the collapse section and the interference section, and extends away from the inner side of the end of the washing and wiping roller and away from the vehicle surface.

11. The pressure relief mechanism for the washing vehicle according to claim 3, characterized in that, The water storage section, water intake section, guide strip, and sealing section cooperate with the surface of the washing and wiping roller to form a sealed liquid exchange zone. The extension section and the water intake section are located on both sides of the water storage section. The water storage section and the sealing section are fixed by a waterproof connection.

12. The pressure relief mechanism for the wash truck according to claim 6, characterized in that, The surface area of ​​the wash roller that forms part of the pressure relief chamber is larger than the surface area of ​​the wash roller that forms part of the sealed liquid exchange zone.

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