A pressure relief filter integrated device for a water tank that can continuously enter and exit water

Abstract

The application is suitable for the technical field of cleaning equipment. The application discloses a pressure relief and filtration integrated device for a water tank with continuous water inlet and outlet, which is installed in the water tank to make the liquid in the cavity of the water tank flow out of the cavity after filtration. A clamping end surface of the water tank is provided with a water inlet, a water outlet and an exhaust port. The pressure relief and filtration integrated device comprises a filtration assembly provided with a water outlet interface and an exhaust interface and a pressure relief assembly arranged in the filtration assembly and connected with the filtration assembly. One end of a pressure relief channel of the pressure relief assembly is connected to the exhaust interface and abuts against the inner wall of the clamping end surface of the water tank. In use, the circulating cleaning container is in a moving state, so that the pressure relief assembly must work, so that the pressure in the cavity can be released, thereby balancing the pressure inside and outside the water tank and effectively reducing the negative effects caused by the unbalanced pressure in the water tank.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaners, and in particular to a pressure relief and filtering integrated device of a water tank for cleaners capable of continuously inflowing and outflowing water. Background Art

[0002] In daily life, we are accustomed to using cleaners to clean our homes, daily necessities, and travel items. To ensure water consumption, cleaners are often equipped with water tanks. Currently, some cleaners use separate cleaning and wastewater tanks, while others use integrated recycling tanks. Integrated cleaning and wastewater tanks primarily process wastewater from cleaning products before entering the tank, thereby increasing water recycling.

[0003] In addition, because water tanks are generally sealed containers, in order to ensure the normal flow of clean and dirty water during operation, the water tank needs to be depressurized. At the same time, integrated water tanks for cleaning and sewage usually need to be equipped with a filter device. Currently, water tanks with filter devices on the market generally have the filter device installed at the sewage inlet, filtering the sewage as it enters. The filtered water is then used to clean the items or environment that need to be cleaned through the water outlet. The disadvantage of this design is that too many impurities will remain in the filter device, which will easily clog the filter holes over time, thereby affecting the filtering effect. In addition, the filter device is generally installed in the water tank, which is particularly inconvenient to clean. Summary of the Invention

[0004] The main technical problem solved by the present invention is to provide a pressure relief and filtering integrated device for a water tank that can continuously inlet and outlet water. The device is installed inside the water tank so that the liquid in the cavity of the water tank flows out of the cavity after filtration. The pressure relief and filtering integrated device can effectively balance the pressure in the water tank and reduce the adverse effects caused by the increase of pressure in the water tank.

[0005] In order to solve the above problems, the present invention provides an integrated pressure relief and filtering device for a water tank with continuous water inflow and outflow, which is installed inside the water tank with continuous water inflow and outflow, so that the liquid in the water tank's cavity flows out of the cavity after filtration, and a clamping end face of the water tank is provided with a water inlet, a water outlet and an exhaust port. The integrated pressure relief and filtering device includes a filter assembly provided with a water outlet interface and an exhaust interface, and a pressure relief assembly arranged inside the filter assembly and connected to the filter assembly, wherein one end of the pressure relief channel of the pressure relief assembly is connected to the exhaust interface and abuts against the inner wall of the clamping end face of the water tank.

[0006] Furthermore, the water tank is provided with ribs for the integrated pressure relief and filtering device to be slidably engaged, and both sides of the integrated pressure relief and filtering device are provided with guide wings that can be slidably engaged on the ribs.

[0007] Furthermore, the pressure relief component includes a pressure balancing mechanism that can connect the inside and outside of the water tank cavity. The pressure balancing mechanism includes a pressure relief port and a pressure relief channel connected to the pressure relief port. The pressure relief channel is provided with two pre-pressure relief ports respectively connected to the water tank cavity and a pre-pressure relief port control component that controls one of the two pre-pressure relief ports to connect to the pressure relief port through the pressure relief channel.

[0008] Furthermore, the pressure balancing mechanism is connected to the filter assembly provided with an exhaust interface, and when the pressure relief port of the pressure balancing mechanism is connected to the exhaust interface of the filter assembly, a part of the pressure relief channel is formed.

[0009] Furthermore, the pre-pressure relief port control assembly includes a pressure relief channel and two pressure relief control switches connected to the pressure relief channel. When the two pressure relief control switches are not on the same horizontal line, one of the pressure relief control switches is in a closed state; when the two pressure relief control switches are on the same horizontal line, one of the pressure relief control switches can be flushed open by the liquid in the cavity under the action of inertia.

[0010] Furthermore, the pressure relief control switch includes two movable gravity balls, two limit parts for limiting the moving position of the gravity balls, and two elastic sleeves that can be blocked by the gravity balls and contain pre-pressure relief through holes.

[0011] Furthermore, the pressure relief control switch includes an I-shaped pressure relief groove connected to the front and rear end walls of the filter assembly, and four pressure relief notches are provided at the root of the pressure relief groove connected to the front and rear end walls of the filter assembly. The elastic sleeve is arranged at both ends of the pressure relief groove and can be taken out upward, and the two limiting parts are arranged at two positions of 1 / 3 and 2 / 3 of the length of the pressure relief groove and extend upward from the bottom surface of the pressure relief groove, and the two gravity balls are arranged between the elastic sleeve and the limiting parts.

[0012] Furthermore, the bottom of the pressure relief groove is provided with an inclined surface for moving the gravity ball toward the pre-pressure relief through hole and a flat surface connecting the bottom of the inclined surface and parallel to the pre-pressure relief through hole.

[0013] Furthermore, a pressure relief rear section channel is provided at the middle of the pressure relief groove close to one side wall, extending from the top of the pressure relief groove downward to the middle of the height direction of the filter assembly, then turning 90 degrees toward the front wall corner of the filter assembly, and then continuing to extend toward the end face of the front wall of the filter assembly and connected to the exhaust interface on the front end face. The pressure relief rear section channel is part of the pressure relief channel.

[0014] Furthermore, the pressure relief rear section channel includes a pressure relief rear section channel component, and the pressure relief rear section channel is provided with a downwardly recessed exhaust valve installation step at the starting point of the top of the pressure relief groove, and the pressure relief rear section channel entrance is provided at the center of the exhaust valve installation step. On the passage of the pressure relief rear section channel, a tubular component connecting the pressure relief channel entrance and the exhaust interface and having a 90-degree corner and surrounding and closing the entire pressure relief rear section channel is the pressure relief rear section channel component.

[0015] Furthermore, the exhaust valve installation step at the beginning of the top of the pressure relief groove forms a gap between the pressure relief groove and the pressure relief groove on the pressure relief rear section channel, and the gap just connects the pressure relief groove and the pressure relief rear section channel.

[0016] Furthermore, the pressure relief rear section channel is also provided with an exhaust duckbill valve at the exhaust valve installation step.

[0017] Furthermore, the filter assembly includes a long box-shaped frame with an open top and hollow sides and bottom, and a filter screen covering the sides and bottom of the long box-shaped frame. The guide wings are arranged on the sides of the long box-shaped frame.

[0018] Furthermore, the front and rear end walls of the long box-shaped frame are solid walls, and a water outlet interface and an exhaust interface are provided on one end wall that abuts against the inner wall of the clamping end face of the water tank. The lower part of the other end wall opposite to the end wall is provided with a handle for conveniently sliding the entire pressure relief and filtering integrated device out of the water tank.

[0019] Furthermore, a circle of slots capable of elastically engaging a sealing ring is provided on the top of the long box-shaped frame, and the integrated pressure relief and filtering device is detachably sealedly connected to the top wall of the water tank through the sealing ring.

[0020] Furthermore, one end of the guide wing extends along the depth direction of the long box-shaped frame to the rear end surface, and the other end of the guide wing extends along the depth direction of the long box-shaped frame to the middle of the long box-shaped frame.

[0021] Furthermore, the filter assembly and the pressure relief assembly are integrally formed.

[0022] Compared with the prior art, the technical effects and advantages of the present invention are:

[0023] The application is a pressure relief and filtration integrated device for a water tank which can continuously take in and discharge water, and is installed in the water tank to make the liquid in the cavity of the water tank flow out of the cavity after filtration. The device can effectively balance the pressure in the water tank and reduce the adverse effects caused by the increase of the pressure in the water tank. The pressure relief and filtration integrated device for the water tank which can continuously take in and discharge water has a pressure balance mechanism which communicates the cavity with the outside. The pressure relief mechanism includes a pressure relief port and a pressure relief channel which communicates with the pressure relief port. The pressure relief channel is provided with two pre-pressure relief ports which respectively communicate with the cavity and a pre-pressure relief port control assembly which controls one of the two pre-pressure relief ports to communicate with the pressure relief port through the pressure relief channel. The pre-pressure relief port control assembly includes a pressure relief channel and two pressure relief control switches which communicate with the pressure relief channel. In use, the water tank which can continuously take in and discharge water is in a moving state and basically will not be in a horizontal state for a long time. When the two pressure relief control switches are not in the same horizontal line, one of the pressure relief control switches is in a closed state, which will inevitably make one of the pre-pressure relief ports communicate with the cavity through the pressure relief channel, so that the pressure in the cavity can be released to balance the pressure in and outside the circulating cleaning container and effectively reduce the negative effects caused by the unbalanced pressure in the circulating cleaning container. Even when the water tank which can continuously take in and discharge water is in a horizontal state, at this time, the two pressure relief control switches are in the same horizontal line, one of the pressure relief control switches can be opened by the liquid in the cavity under the action of inertia, which will inevitably make one of the pre-pressure relief ports communicate with the cavity through the pressure relief channel, so that the pressure in the cavity can be released to balance the pressure in and outside the circulating cleaning container and effectively reduce the negative effects caused by the unbalanced pressure in the circulating cleaning container. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings without exceeding the scope of the present application.

[0025] Figure 1 The exploded view of the water tank which can continuously take in and discharge water.

[0026] Figure 2 The Figure 1 The sectional view along the A-A direction.

[0027] Figure 3 The perspective view of the water tank body from one angle.

[0028] Figure 4 The perspective view of the water tank body from another angle.

[0029] Figure 5 The Figure 2 The local enlarged schematic view of the structure in the B part.

[0030] Figure 6 A perspective view of the pressure relief and filtration integrated device.

[0031] Figure 7 An exploded view of the pressure relief and filtration integrated device.

[0032] Reference signs:

[0033] Water tank bayonet assembly 1, bayonet end plate 10, gasket plate 11,

[0034] Water tank body assembly 2,

[0035] Water tank body 20, abutting surface 201, clamping rib 202,

[0036] Bayonet portion 21, first stepped end surface 210, clean water passage 211, sewage passage 212, sewage side inlet passage 2121, sewage pipe interface 2122, sewage passage surrounding wall 2123, exhaust passage 213, fastening screw blind hole 214, second stepped end surface 215, third stepped end surface 216, fourth stepped end surface 217, central solid portion 218, bayonet portion bottom wall 219,

[0037] Pressure relief and filtration integrated device 3,

[0038] Filter assembly 30, water outlet interface 301, exhaust interface 302, guide wing 303, filter screen 304,

[0039] Pressure relief assembly 31, limiting portion 315, pre-pressure relief port 316, pressure relief notch 318,

[0040] Pressure relief rear section passage 317, exhaust valve mounting step 3171, pressure relief rear section passage inlet 3172, pressure relief rear section passage member 3173,

[0041] Elastic sleeve 32, gravity ball 33, exhaust duckbill valve 34, sealing ring 35,

[0042] Water tank cover assembly 4,

[0043] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0044] The claims of the present application will be further described in detail below in conjunction with specific embodiments and the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor also belong to the scope of protection of the present application.

[0045] It should be understood that, in the description of the embodiments of the present invention, all directional indication terms, such as "up", "down", "left", "right", "front", "back", etc., indicate the orientation or position relationship based on the orientation and position relationship shown in the drawings or the orientation or position relationship in which the invention product is usually placed when in use. They are only for the purpose of simplifying the description of the present invention, and do not explicitly or implicitly indicate that the device, element or component referred to must have a specific orientation and a specific orientation structure, and should not be understood as limiting the invention. They are only used to explain the relative position relationship and movement of the various components shown in the drawings. When the specific posture changes, the directional indication may also change accordingly.

[0046] Furthermore, ordinal numbers such as "first" and "second" in this disclosure are used solely for distinction purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. The terms "first" and "second" may explicitly or implicitly indicate at least one of the technical features. In this disclosure, "plurality" means at least two, i.e., two or more, unless otherwise expressly specified; and "at least one" means one, one, or more.

[0047] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can mean that the positional relationship between components is relatively fixed, or that the components are physically fixedly connected. It can be a detachable connection or an integrated structure. It can be a mechanical connection or an electrical signal connection. It can be a direct connection or an indirect connection through an intermediate medium or component. It can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined in the specification, other understandings may not achieve the corresponding functions or effects. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The controllers and control circuits involved in the present invention are conventional control technologies or units for those skilled in the art. For example, the control circuits of the controllers can be implemented by those skilled in the art using existing technologies, such as simple programming. Regarding software or programs that work with hardware to achieve control results, if the description does not provide detailed information about the software or program control process involved, then the existing technologies or conventional technologies used by those skilled in the art are used. The power supply also uses the existing technologies in the art, and the main technical point of the present invention is to improve the mechanical device, so the present invention will not further explain the specific circuit control relationship and circuit connection in detail.

[0049] The disclosure of the present invention provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described in the present invention. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0050] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0051] The solution of this application will be described in detail below with reference to the accompanying drawings.

[0052] Figure 1-Figure 7 As shown, a schematic diagram of a pressure relief and filtration integrated device for a water tank that can continuously inlet and outlet water.

[0053] Specifically, if Figure 1 、 Figure 2 、 Figure 3 As shown, the water tank for the cleaner with continuous water inlet and outlet comprises a cylindrical water tank body assembly 2 with an open large end and a closed small end and a cavity, a water tank bayonet assembly 1 installed on the small end face of the water tank body assembly 2, a pressure relief and filtering integrated device 3 slidably engaged in the water tank body assembly 2, and a water tank cover assembly 4 covering the large end opening of the water tank body assembly 2 (not marked in the figure), wherein the water tank body assembly 2 comprises a bayonet portion 21 arranged on the small end face of the water tank body assembly 2 (not marked in the figure) for allowing liquid to enter and exit the cavity, the bayonet portion 21 is provided with a clean water channel 211, a sewage channel 212 and an exhaust channel 213, and the pressure accumulated in the cavity can be discharged through the pressure relief and filtering integrated device The device 3 is discharged out of the water tank along the exhaust channel 213 provided on the bayonet portion 21. The water tank bayonet assembly 1 is further detachably fastened to the bayonet portion 21 by screws. The water tank bayonet assembly 1 can further prevent the liquid contained in the cavity from leaking to other parts of the cleaner during operation. The parts of the water tank bayonet assembly 1 are also conveniently removed from the body of the cleaner (not shown in the figure) when the liquid in the cavity needs to be replaced. After removal, the entire water tank can still allow the clean water channel 211, sewage channel 212 and exhaust channel 213 in the bayonet portion 21 to be automatically closed, so that the entire water tank can still be leak-proof when the liquid in the cavity is replaced.

[0054] Specifically, if Figure 2 、 Figure 4As shown, the water tank body assembly 2 includes a water tank body 20 with a cylindrical shape, a large end open and a small end closed and with a cavity, and a bayonet portion 21 that closes the cavity at the small end of the water tank body 20. The water tank body 20 and the bayonet portion 21 are integrally formed. The side wall (not marked in the figure) of the water tank body 20 has a single structure relative to the end wall (not marked in the figure) of the bayonet portion 21, but the formed wall thickness is consistent. The bayonet portion 21 is provided with a multi-layer wall thickness structure (not marked in the figure) in the depth direction of the cylindrical water tank body 20. Specifically, as Figure 2 、 Figure 4 As shown, the multi-layer wall thickness structure of the bayonet portion 21 includes a first step end face 210 abutting against one side end face of the bayonet plate 10 of the water tank bayonet assembly 1, a second step end face 215 abutting against one side end face of the bayonet sealing pad 11 of the water tank bayonet assembly 1, a third step end face 216 of a sewage channel surrounding wall 2123 enclosing a sewage channel and parallel to the second step end face 215, and a fourth step end face 217 abutting against one end face of the pressure relief filter assembly 3 pointing to the water tank bayonet assembly 1. This design can enhance the ability of the bayonet portion 21 to resist external impacts while ensuring the rigidity of the entire water tank body, and can also ensure that the large end opening (not shown in the figure) of the water tank body 20 can easily open / close the water tank cover assembly 4. Figure 3 、 Figure 4 As shown, the bottom of the cylindrical body (not marked in the figure) where the water tank body 20 and the cleaner body (not marked in the figure) meet is in a straight state, and two abutment surfaces 201 are provided along the waist portion (not marked in the figure) that is inclined upward along the straight bottom. The abutment surfaces 201 of the water tank body 20 and the straight bottom and the inclined waist portion connecting the two are in contact with the cleaner body. Figure 4 As shown, the inner side wall of the water tank body 20 is provided with two clamping ribs 202 parallel to the axis of the water tank body 20 for slidingly clamping the pressure relief filter assembly 3. One end of the clamping rib 202 extends along the depth direction of the water tank body 20 to the large end opening of the water tank body 20, and the other end of the clamping rib 202 extends along the depth direction of the water tank body 20 to the middle of the water tank body 20.

[0055] like Figure 2 As shown, combined Figure 1 、 Figure 3 、 Figure 4Taken together, the end face of the sewage channel 212 of the bayonet portion 21 is provided with an abutment 131, and the abutment 131 is provided with a chamfer at one end facing the outside of the water tank body 20, and a double-layer connecting ring wall (not marked in the figure) that is not conductive to the outside. The hollow part of the double-layer connecting ring wall is just clamped with a spring 132. The end face of the sewage channel 212 of the bayonet portion 21 is also provided with a sewage channel surrounding wall 2123 that is closed and abutted with the outer ring wall of the abutment 131. The sewage channel surrounding wall 2123 is provided with a ring wall corresponding to the inner ring wall of the abutment 131 on the part of the third step surface (not marked in the figure). The other end of the spring 132 is clamped on the ring wall, and the abutment 131 clamps and connects a spring 132 to form a complete elastic abutment assembly 13. The outer annular wall of the abutment 131 (not marked in the figure), the sewage channel surrounding wall 2123, the central solid part 218 of the bayonet part 21, and the inner wall corresponding to the sewage channel 212 (not marked in the figure) together enclose a sewage side inlet channel 2121. The entrance of the sewage channel 212 is the sewage outlet 102 of the water tank bayonet assembly 1 that is exposed when the abutment 131 is compressed by external force. The outlet of the sewage channel 212 is the sewage pipe interface 2122. The part of the sewage channel 212 between the sewage outlet 102 and the sewage pipe interface 2122 is called the sewage side inlet channel 2121. In order to allow the sewage returned through the return pipe (not shown in the figure) to reach a deeper position in the water tank, a sewage pipe (not shown in the figure) can be plugged into the sewage pipe interface 2122, so that the sewage returned to the water tank can more fully contact the pressure relief filter assembly 3 and be filtered into clean water before being sent out of the water tank again. The sewage inlet 102, the sewage side inlet channel 2121, the sewage pipe interface 2122 and the sewage pipe (not shown in the figure) together form the entire sewage channel 212. The elastic abutment assembly 13 includes an abutment member 131 and a spring 132. When the abutment member 131 is pressed by an external force, the abutment member 131 compresses the spring 132, thereby opening the sewage channel 212.

[0056] like Figure 6 、 Figure 7 As shown, combined Figure 1 、 Figure 2 、 Figure 4Taken together, the pressure relief and filtration integrated device 3 slides and engages within the water tank body assembly 2. It includes a filter assembly 30, one end of which abuts the bottom wall 219 of the bayonet portion of the water tank body assembly 2 and the other end of which leaves a gap with the water tank cover assembly 4, and a pressure relief assembly 31 disposed within the filter assembly 30 and having the function of regulating the pressure within the water tank. The frame of the filter assembly 30 (not shown in the figure) and the pressure relief assembly 31 are detachably connected. The different names used here are only to better reflect the functions of each part. Any variation and adjustment of the technical solutions described above and below are within the scope of protection of this application. The frame of the filter assembly 30 is a long box-shaped frame. The front and rear end walls of the long box-shaped frame are solid walls. A water outlet interface 301 and an exhaust interface 302 are provided on the front face that abuts the bottom wall 219 of the bayonet portion of the water tank body assembly 2. A handle (not shown in the figure) is provided at the lower portion of the other end wall opposite to the end wall to facilitate sliding and removing the entire pressure relief and filtration integrated device 3 from the water tank body assembly 2. The top of the long box-shaped frame is open, and a circle of slots (not shown) are provided on the top of the long box-shaped frame to elastically engage the sealing ring 35. The pressure relief and filtration integrated device 3 is detachably sealed with the top wall of the water tank body assembly 2 through the sealing ring 35. In addition to the two end walls, the other two side walls and the bottom wall of the long box-shaped frame are provided with a large number of hollow areas (not shown in the figure). Figure 7 As shown, the outer walls of the two side walls and bottom wall of the long box-shaped frame are equipped with filter screens 304 to cover the hollowed-out areas. Sewage entering the water tank cavity through the sewage channel 212 is filtered by the filter screen 304 and enters the integrated pressure relief and filtration device 3, becoming "sub-clean water". It is then discharged from the water tank cavity through the water outlet interface 301 of the integrated pressure relief and filtration device 3 and the clean water channel 211. Guide wings 303 are respectively provided on the two side walls of the frame of the filter assembly 30. The guide wings 303 slidably abut against the engaging ribs 202 of the water tank body assembly 2. One end of the guide wing 303 extends along the depth direction of the frame of the filter assembly 30 to the rear end surface of the frame of the filter assembly 30 where the water outlet interface 301 and the exhaust interface 302 are not provided. The other end of the guide wing 303 extends along the depth direction of the frame of the filter assembly 30 to the middle of the depth direction of the frame.

[0057] As a further improved implementation method, as needed, Figure 5 、 Figure 6 、 Figure 7As shown, the pressure relief component 31 and the frame of the filter component 30 are integrally formed. The pressure relief component 31 is an "I"-shaped structure connecting the front end face (not marked in the figure) of the frame provided with the water outlet interface 301 and the exhaust interface 302 and the rear end face (not marked in the figure) not provided with the water outlet interface 301 and the exhaust interface 302. The "I"-shaped structure is provided with a pressure relief groove (not marked in the figure) for accommodating the pressure regulating device on the upper surface facing the water tank body component 2. The root of the pressure relief groove connecting the front end face and the rear end face of the "I"-shaped structure is provided with four pressure relief notches 318, and four clamping ribs (not marked in the figure) extend from the two walls of the pressure relief groove slightly away from the pressure relief notch 318. (not marked), a removable elastic sleeve 32 is connected to the card interface. A pre-pressure relief hole (not marked in the figure) is provided on the elastic sleeve 32 parallel to the axis of the pressure relief groove. The opening of the pre-pressure relief hole pointing to the two pressure relief notches 318 is a pre-pressure relief port 316. Two limiters 315 extend upward from the bottom of the pressure relief groove at two locations in the pressure relief groove, approximately 1 / 3 and 2 / 3 of the length of the pressure relief groove. A gravity ball 33 is placed between the two elastic sleeves 32 and the two limiters 315 in the pressure relief groove. Under the action of gravity, the gravity ball 33 can be used to block the pre-pressure relief hole and is restricted to movement only in the pressure relief groove between the elastic sleeve 32 and the two limiters 315. The gravity ball 33, the elastic sleeve 32, the limiters 315, and the pressure relief groove together form a complete pressure relief control assembly (not marked in the figure) with two sets of independent pressure relief control switches (not marked in the figure).

[0058] As a further improved implementation, as needed, the bottom of the pressure relief groove is provided with an inclined surface (not marked in the figure) that moves the gravity ball toward the pre-pressure relief through hole and a flat surface (not marked in the figure) connecting the bottom of the inclined surface and parallel to the pre-pressure relief through hole.

[0059] like Figure 6 、 Figure 7As shown, a downwardly extending pressure relief rear section passage 317 is provided at the middle of the pressure relief groove and close to a side wall, which extends to the front end surface direction where the water outlet interface 301 and the exhaust interface 302 are provided after a 90-degree corner in the height direction of the filter assembly 30, and then continues to extend towards the front end surface and is connected to the exhaust interface 302 on the front end surface. The exhaust valve mounting step 3171 is provided at the starting point of the pressure relief groove top, and the center of the exhaust valve mounting step 3171 is provided with a pressure relief rear section passage inlet 3172. A tubular member that connects the pressure relief rear section passage inlet 3172 and the exhaust interface 302 and has a 90-degree corner and encloses the entire pressure relief rear section passage 317 is called a pressure relief rear section passage member 3173. The gap between the pressure relief groove and the pressure relief rear section passage 317 formed by the exhaust valve mounting step 3171 at the starting point of the pressure relief groove top of the pressure relief rear section passage 317 exactly connects the pressure relief groove and the pressure relief rear section passage 317.

[0060] As shown in Figure 6 , Figure 7 , the pressure to be released in the water tank first enters the pressure relief filter assembly 3 through the filter screen 304 provided on both sides and the bottom surface of the skeleton of the filter assembly 30, and then enters the pressure relief groove through the four pressure relief gaps 318. One of the two gravity balls 33 blocks the pre-pressure relief hole in the corresponding elastic sleeve 32, while the other gravity ball 33 opens the pre-pressure relief hole in the corresponding elastic sleeve 32. After the pressure to be released passes through the limiting portion 315 corresponding to the gravity ball 33 that opens the pre-pressure relief hole, it continues to enter the pressure relief passage inlet 3172 along the gap on the side wall of the pressure relief groove, and then reaches the exhaust interface 302 along the pressure relief passage 317, and then is released outside the water tank through the exhaust port 103 of the water tank bayonet assembly 1. The pressure relief gap 318, the pressure relief groove, and the pressure relief rear section passage form a complete pressure relief passage.

[0061] As shown in Figure 7 , as a further improved embodiment, an exhaust duckbill valve 34 can be further provided at the exhaust valve mounting step 3171. The one-way conduction characteristic of the exhaust duckbill valve 34 can effectively prevent the reverse filling of the pressure relief groove through the pressure relief rear section passage 317 by the pressure outside the water tank.

[0062] Specifically, as shown in Figure 5 , Figure 6 , Figure 7As shown, in use, the water tank is in motion and is not in a horizontal state for a long time. When the two pressure relief control switches are not in the same horizontal line, one of the pressure relief control switches is in the closed state, which will inevitably cause one of the pre-pressure relief ports 316 to communicate with the cavity of the water tank, so that the pressure in the cavity can be released, thereby balancing the pressure inside and outside the water tank and effectively reducing the negative effects caused by the imbalance of the pressure in the water tank. Even when the circulating cleaning container is in a horizontal state, at this time, the two pressure relief control switches are in the same horizontal line, and one of the pressure relief control switches can be opened by the liquid in the cavity under the action of inertia, which will inevitably cause one of the pre-pressure relief ports 316 to communicate with the cavity, so that the pressure in the cavity can be released, thereby balancing the pressure inside and outside the circulating cleaning container and effectively reducing the negative effects caused by the imbalance of the pressure in the circulating cleaning container. The pressure relief control switch comprises a gravity ball 33, an elastic sleeve 32 capable of limiting the movement of the gravity ball 33, a pre-pressure relief through hole provided in the elastic sleeve 32, and a limiting portion 315 for limiting the movement position of the gravity ball 33.

[0063] When the car washing device uses the cleaning drum for continuous cleaning, during the automatic cleaning process of the cleaning drum, part of the air contained in the cleaning drum scrubbing sponge layer gap is squeezed out with the water into the cleaning liquid circuit, causing the circuit pressure to increase, resulting in low efficiency of the circuit liquid conveying, and the accumulated pressure in the cleaning liquid circuit can "open" the sealing structure of the joints, junctions and other parts in the conveying pipeline, causing the cleaning liquid circuit to "leak", which seriously affects the performance of the car washing device.

[0064] Specifically, as shown in Figure 5 , Figure 6 , Figure 7 Because the gravity ball 33 can move freely in the pressure relief groove, the two pressure relief control switches are arranged on the same horizontal line, and when the two pressure relief control switches are parallel to the horizontal plane, theoretically, the two pressure relief control switches can be in the closed state, the open state, or one is closed and the other is open. Because the water tank can only increase the pressure when it is in use, and the water tank is in motion during use, it is impossible for the two pressure relief control switches to be in the horizontal state for a long time, so only one of the two pressure relief control switches will be in the open state and the other will be in the closed state. Therefore, at least one of the pre-pressure relief ports 316 is communicated with the outside of the water tank through the pressure relief rear channel 317 and the exhaust channel 213 during use, so that the pressure inside and outside the water tank is balanced.

[0065] As a further improved implementation, in order to better ensure that pressure balance can be achieved when the two pressure relief control switches are in the same horizontal plane, the bottom of the pressure relief groove is provided with an inclined surface (not marked in the figure) for moving the gravity ball 33 toward the pre-pressure relief port 316 and a flat horizontal surface (not marked in the figure) connecting the bottom of the inclined surface and the pre-pressure relief port 316. When the two pressure relief control switches are in the same horizontal plane, even if the gravity ball 33 makes the pre-pressure relief port 316 non-conductive, the gravity ball 33 of one of the pressure relief control switches can be flushed open by the liquid in the water tank under the action of inertia, which will inevitably make it easier for the gravity ball 33 to leave the closed position of the pre-pressure relief port 316, so that one of the pre-pressure relief ports 316 will be connected to the water tank through the pressure relief rear section channel 317, so that the pressure in the water tank can be released, thereby balancing the pressure inside and outside the water tank.

[0066] As needed, such as Figure 5 、 Figure 6 、 Figure 7 As shown, the elastic sleeve 32 can effectively reduce the noise generated by the impact of the gravity ball during movement. The elastic sleeve 32 is made of elastic materials such as silicone. The elastic sleeve 32 adopts a trumpet-shaped structure (not shown in the figure), which can achieve a better switching effect.

[0067] When the water tank needs to be changed, or the pressure relief and filter integrated device 3 in the water tank needs deep cleaning, use external force to separate the water tank from the body of the vehicle cleaner, then pour out the liquid in the water tank and re-inject new liquid; or, further unplug the entire water tank cover assembly 4, further slide the handle on the pressure relief and filter integrated device 3 to remove the pressure relief and filter integrated device 3 outward, perform deep cleaning and then install it back, and finally use external force to cover the water tank cover assembly 4 with the water tank body assembly 2 to complete this time of replacing the cleaning liquid or deep cleaning of the pressure relief and filter assembly 3.

[0068] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core ideas of the present application. At the same time, changes or modifications made by those skilled in the art based on the ideas of the present application, the specific implementation methods, and the scope of application of the present application, all fall within the scope of protection of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. A pressure relief and filtration integrated device, installed inside a water tank that can continuously inlet and outlet water, the water tank includes a water tank body assembly, a water tank bayonet assembly installed on the small end face of the water tank body assembly, and a pressure relief and filtration integrated device slidably engaged in the water tank body assembly, the water tank body assembly includes a bayonet portion provided on the small end face of the water tank body assembly, the liquid in the water tank cavity flows out of the cavity after being filtered, a water inlet, a water outlet and an exhaust port are provided on a bayonet end face of the water tank, the bayonet portion is provided with a clean water channel, a sewage channel and an exhaust channel, characterized in that The integrated pressure relief and filtration device includes: The filter assembly has one end abutting against the bottom wall of the bayonet portion of the water tank body assembly, and the filter assembly is provided with a water outlet interface and an exhaust interface; The pressure relief assembly is arranged inside the filter assembly and connected to the filter assembly; the pressure relief assembly is provided with a pressure relief channel, one end of which is connected to the exhaust interface and abuts against the inner wall of the clamping end surface of the water tank; The sewage sent back to the water tank is fully in contact with the filter assembly and filtered into clean water, which can be sent out of the water tank again, thereby improving the repeated recycling of water. After removal, the entire water tank can still allow the clean water channel, sewage channel and exhaust channel in the bayonet part to be automatically closed.

2. The integrated pressure relief and filtration device according to claim 1, characterized in that: The water tank also includes a water tank cover assembly, and a gap is left between the other end of the filter assembly and the water tank cover assembly. The water tank body and the bayonet part are formed as one piece. The bayonet part is provided with a multi-layer wall thickness structure in the depth direction of the cylindrical water tank body. The inside of the water tank is provided with ribs for sliding and clamping the integrated pressure relief and filtering device. Guide wings that can be slidably clamped on the ribs are provided on both sides of the integrated pressure relief and filtering device.

3. The integrated pressure relief and filtration device according to claim 2, characterized in that: The pressure relief assembly includes a pressure balancing mechanism that can connect the inside and outside of the water tank cavity. The pressure balancing mechanism includes a pressure relief port and a pressure relief channel connected to the pressure relief port. The pressure relief channel is provided with two pre-pressure relief ports respectively connected to the water tank cavity and a pre-pressure relief port control assembly that controls one of the two pre-pressure relief ports to be connected to the pressure relief port through the pressure relief channel. The pre-pressure relief port control assembly includes a pressure relief channel and two pressure relief control switches connected to the pressure relief channel. When the two pressure relief control switches are not on the same horizontal line, one of the pressure relief control switches is in a closed state. When the two pressure relief control switches are on the same horizontal line, one of the pressure relief control switches can be flushed open by the liquid in the cavity under the action of inertia.

4. The integrated pressure relief and filtration device according to claim 3, characterized in that: The bayonet assembly also includes a bayonet plate and a bayonet sealing pad. The pressure balancing mechanism is connected to the filter assembly provided with an exhaust interface. When the pressure relief port of the pressure balancing mechanism is connected to the exhaust interface of the filter assembly, a part of the pressure relief channel is formed. The multi-layer wall thickness structure includes: The first step end surface abuts against one end surface of the bayonet plate of the water tank bayonet assembly, The second step end surface abuts against one end surface of the bayonet sealing pad of the water tank bayonet assembly, The sewage channel wall surrounding the sewage channel is parallel to the third step end face of the second step end face, And a fourth step end surface abutting against an end surface of the pressure relief filter assembly pointing to the water tank bayonet assembly.

5. The integrated pressure relief and filtration device according to claim 3, characterized in that: The pressure relief control switch includes two movable gravity balls, two limit parts for limiting the moving positions of the gravity balls, and two elastic sleeves which can be blocked by the gravity balls and contain pre-pressure relief through holes.

6. The integrated pressure relief and filtration device according to claim 5, characterized in that: The pressure relief control switch includes an "I"-shaped pressure relief groove connected to the front and rear end walls of the filter assembly. Four pressure relief notches are provided at the root where the pressure relief groove is connected to the front and rear end walls of the filter assembly. Elastic sleeves are arranged at both ends of the pressure relief groove and can be taken out upward. Two limit parts are arranged at two positions of 1 / 3 and 2 / 3 of the length of the pressure relief groove and extend upward from the bottom surface of the pressure relief groove. Two gravity balls are arranged between the elastic sleeve and the limit parts. The bottom of the pressure relief groove is provided with an inclined surface for moving the gravity ball toward the pre-pressure relief through hole and a flat surface connecting the bottom of the inclined surface and parallel to the pre-pressure relief through hole.

7. The integrated pressure relief and filtration device according to claim 6, characterized in that: In the middle of the pressure relief groove, close to one side wall, there is a pressure relief rear section channel that extends from the top of the pressure relief groove downward to the middle of the height direction of the filter component, then turns 90 degrees toward the front wall corner of the filter component, continues to extend toward the end face of the front wall of the filter component and is connected to the exhaust interface on the front end face. The pressure relief rear section channel is part of the pressure relief channel.

8. The integrated pressure relief and filtration device according to claim 7, characterized in that: The rear section of the pressure relief channel includes a rear section of the pressure relief channel component. The rear section of the pressure relief channel is provided with a downwardly concave exhaust valve installation step at the starting point of the top of the pressure relief groove. The center of the exhaust valve installation step is provided with an entrance to the rear section of the pressure relief channel. On the passage of the rear section of the pressure relief channel, a tubular component connecting the entrance of the pressure relief channel and the exhaust interface and having a 90-degree corner and surrounding and closing the entire rear section of the pressure relief channel is the rear section of the pressure relief channel component. The exhaust valve installation step at the starting point of the top of the pressure relief groove of the rear section of the pressure relief channel forms a gap between the rear section of the pressure relief channel and the pressure relief groove on the rear section of the pressure relief channel, and the gap just connects the pressure relief groove and the rear section of the pressure relief channel.

9. The integrated pressure relief and filtration device according to claim 2, wherein: The filter assembly includes a long box-shaped frame with an open top, two side surfaces and a hollow bottom surface, and a filter screen covered on the two side surfaces and bottom surfaces of the long box-shaped frame. The frame of the filter assembly is detachably connected to the pressure relief assembly, and the guide wings are arranged on the two side surfaces of the long box-shaped frame. The front and rear end walls of the long box-shaped frame are solid walls. An outlet interface and an exhaust interface are provided on one end wall abutting against the inner wall of the clamping end surface of the water tank. A handle is provided on the lower part of the other end wall opposite to the end wall for conveniently sliding the entire pressure relief and filter integrated device out of the water tank. A circle of card grooves that can be elastically clamped with a sealing ring is provided on the top of the long box-shaped frame. The pressure relief and filter integrated device is detachably sealed with the top wall of the water tank through the sealing ring. One end of the guide wing extends to the rear end surface along the depth direction of the long box-shaped frame, and the other end of the guide wing extends to the middle part of the long box-shaped frame along the depth direction of the long box-shaped frame.

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