Air filtering equipment and vehicle

Abstract

The utility model provides air filtering equipment and a vehicle. The air filtering equipment comprises a shell, a pressure release valve and an electromagnetic valve, the shell is provided with a first inner cavity, a partition plate is arranged in the first inner cavity, the first inner cavity is divided into a first cavity body and a second cavity body by the partition plate, and a pressure relief opening and an air relief opening which are communicated with the first cavity body and the second cavity body are formed in the partition plate; the pressure relief valve is connected to the pressure relief opening so as to control the pressure relief opening to be opened and closed, and the electromagnetic valve is connected to the air discharging opening so as to control the air discharging opening to be opened and closed. According to the embodiment of the invention, the pressure release valve and the electromagnetic valve act independently, so that the structure is simpler, and the reliability is high.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to an air filtering device and a vehicle. Background Art

[0002] As a crucial component of the vehicle's chassis system, air suspension adjusts the vehicle's height and stance, ensuring comfortable driving on a variety of road conditions. Air suspension typically consists of air springs and an air pump. The air pump draws in ambient air, compresses it to a certain pressure, and then feeds it into the air springs. The air springs, in turn, adjust the vehicle's height and stance based on this high-pressure air. To prevent moisture and impurities in the ambient air from adversely affecting the air springs and related components, the high-pressure air is filtered through an air filter before being fed into the air springs.

[0003] In related technologies, air filters usually achieve the system's inflation, deflation, and release processes through the coordinated use of a solenoid valve and a pressure relief valve. However, the coordinated use of the pressure relief valve and the solenoid valve results in a complex structure and poor reliability. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an air filtration device that can solve the problems in the related art to at least a certain extent.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an air filtering device, the air filtering device comprising: a housing, a pressure relief valve, and a solenoid valve;

[0007] The housing has a first inner cavity, a partition is provided in the first inner cavity, the partition divides the first inner cavity into a first cavity and a second cavity, and a pressure relief port and an air release port communicating with the first cavity and the second cavity are provided on the partition;

[0008] The pressure relief valve is connected to the pressure relief port to control the on / off of the pressure relief port, and the solenoid valve is connected to the air release port to control the on / off of the air release port.

[0009] Optionally, the pressure relief valve is movably connected to the pressure relief port so that the pressure relief port can be switched between a disconnected state and a connected state; in the disconnected state, the pressure relief valve blocks the pressure relief port; in the connected state, the pressure relief valve releases the blockage of the pressure relief port.

[0010] Optionally, the pressure relief valve includes a valve core and an elastic member, wherein the elastic member is connected between the cavity wall of the second cavity and the valve core, and the elastic member is used to provide elastic force for resetting the valve core.

[0011] Optionally, the elastic member is a spring.

[0012] Optionally, the air filtering device further comprises a guide member, wherein the guide member is provided on the partition;

[0013] The valve core is movably connected to the guide member, and the guide member is used to guide the movement of the valve core.

[0014] Optionally, the guide member is a cylindrical structure having a second inner cavity, and the valve core is slidably connected to the second inner cavity.

[0015] Optionally, one end of the cylindrical structure extends into the first cavity, and the portion of the cylindrical structure extending into the first cavity is provided with the pressure relief port.

[0016] Optionally, the cylindrical structure is provided with a through hole, and the through hole is used to achieve communication between the second cavity and the second inner cavity.

[0017] Optionally, the solenoid valve is fixedly connected to the vent port. When the solenoid valve is closed, the solenoid valve can block the vent port; when the solenoid valve is opened, the solenoid valve can release the blockage of the vent port.

[0018] Optionally, the pressure relief valve and the solenoid valve are arranged in the second cavity.

[0019] Optionally, a filter element is further included, and the filter element is installed in the first cavity.

[0020] Optionally, the filter element includes two filter screens spaced apart along the axial direction of the shell, the filter screens are connected to the inner wall of the shell, and the two spaced apart filter screens and the inner wall of the shell form a accommodating cavity for accommodating the desiccant.

[0021] Optionally, the air filtering device further includes an air vent pipe, which is disposed in the first cavity and communicates with the air vent port on the partition, and is used to discharge the gas in the first cavity.

[0022] Optionally, the housing includes an air inlet, an air outlet, and an air return port, the air inlet is communicated with the first cavity, the air outlet is communicated with the first cavity, and the air return port is communicated with the second cavity;

[0023] The working process of the air filtration device includes an inflation process, a deflation process and a degassing process;

[0024] During the inflation process, the pressure relief port and the air release port are blocked, and the gas in the first cavity flows in from the air inlet and flows out from the air exhaust port;

[0025] During the deflation process, the pressure relief port is open and the vent port is blocked, so that part of the gas in the first cavity flows out from the vent port, and the other part flows into the second cavity from the pressure relief port and is discharged from the second cavity from the gas return port;

[0026] During the deflation process, the deflation port is open, the pressure relief port is blocked, and the gas in the first cavity flows from the deflation port into the second cavity and is discharged from the second cavity from the gas return port.

[0027] In a second aspect, an embodiment of the present application provides a vehicle, comprising the air filtration device described in any one of the above items.

[0028] The air filtration equipment in the embodiment of the present application integrates the functions of air filtration and drying, air path control, overpressure protection, etc., and is equipped with a pressure relief valve to avoid the danger caused by excessive gas pressure, thereby improving the safety of the air filtration equipment. Through the solenoid valve, when the air suspension system is deflated, the high-pressure gas can be reversed through the filter element, thereby taking away moisture and impurities in the filter element, effectively extending the service life of the air filtration equipment; the pressure relief valve and the solenoid valve act independently, with a simple structure and high reliability.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of an air filtration device proposed in this application;

[0031] Figure 2 This is an exploded view of the structure of an air filtration device proposed in this application;

[0032] Figure 3 An inflation principle diagram of an air filtration device proposed in this application;

[0033] Figure 4 A pressure relief principle diagram of an air filtration device proposed in this application;

[0034] Figure 5 This is a diagram of the air release principle of an air filtration device proposed in this application.

[0035] Description of reference numerals:

[0036] 1-shell, 110-first inner cavity, 111-first cavity, 112-second cavity, 2-filter element, 20-accommodating cavity, 201-filter screen, 202-filter cotton, 3-pressure relief valve, 31-valve core, 32-elastic member, 301-pressure relief port, 302-through hole, 4-solenoid valve, 40-air release port, 5-partition, 6-cavity wall, 7-guide member, 71-second inner cavity, 8-end cover, 80-air inlet, 90-exhaust port, 10-return air pipe, 100-return air port, 11-sealing cover, 12-connector, 13-extrusion spring, 14-sealing ring, 15-sealing pad, 16-air release pipe. DETAILED DESCRIPTION

[0037] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0041] The embodiment of the present application provides an air filtration device. In actual application, the air filtration device can be used in an automobile air suspension system. The automobile air suspension is located in the chassis system of the automobile. The system can be used to adjust the height and posture of the automobile, thereby improving the comfort of the user. The automobile air suspension system usually includes an air spring and an air pump. The air pump can inhale external air and compress it to a certain pressure to input it into the air spring. The air spring adjusts the height and posture of the vehicle body based on the high-pressure air inhaled from the air pump. The moisture and impurities in the external air will have an adverse effect on the air spring and related components. Before the high-pressure air is input into the air spring, it needs to be filtered by the air filtration device of the present application. The air filtration device of the present application is described in detail below with reference to the accompanying drawings.

[0042] Reference Figure 1 , shows a schematic structural diagram of an air filtration device according to an embodiment of the present application, referring to Figure 2 , showing Figure 1 The structural decomposition diagram of the air filtering device shown in the figure, specifically, the air filtering device includes: a shell 1, a filter element 2, a pressure relief valve 3 and a solenoid valve 4; the shell 1 has a first inner cavity 110, and the first inner cavity 110 is provided with a pressure relief port 301 and an air vent 40 connecting the first cavity 111 and the second cavity 112, which is divided into a first cavity 111 and a second cavity 112; the pressure relief valve 3 is connected to the pressure relief port 301 to control the on and off of the pressure relief port 301, and the solenoid valve 4 is connected to the air vent 40 to control the on and off of the air vent 40.

[0043] In the air filtration device of the embodiment of the present application, the filter element 2 is suitable for installation in the first cavity 111, and the housing 1 includes an air inlet 80, an exhaust port 90, and an air return port 100. The air inlet 80 is connected to the first cavity 111, the exhaust port 90 is connected to the air inlet 80, and the air return port 100 is connected to the second cavity 112. In a specific application, the air inlet 80 of the air filtration device provided in the embodiment of the present application is connected to the exhaust port of the air pump, the exhaust port 90 is connected to the air spring, and the air return port 100 is connected to the air inlet cavity of the air pump.

[0044] Reference Figure 3, shows an inflation principle diagram of an air filtration device in the present application. During the inflation process, the air pump compresses the outside air and inputs the high-pressure gas into the filter element 2 of the air filtration device through the air inlet 80. After the moisture and impurities in the high-pressure gas are filtered in the filter element 2, the high-pressure gas is input into the air spring through the exhaust port 90, so that the air spring adjusts the height and posture of the vehicle body through the high-pressure air, and avoids the adverse effects of moisture and impurities in the outside air on the air spring and related components.

[0045] Reference Figure 4 , shows a pressure relief principle diagram of an air filtration device in the present application. A pressure relief valve 3 is provided in the air filtration device in the embodiment of the present application. During the deflation process, when the exhaust pressure is too high and exceeds the safety pressure value set by the pressure relief valve 3, the pressure relief port 301 is connected. At this time, part of the gas in the first cavity 111 is discharged into the air inlet cavity of the air pump through the pressure relief port 301 and the return air port 100, and then discharged into the outside atmosphere through the air pump intake pipe until the exhaust pressure returns to the safety pressure range set by the pressure relief valve 3. In the embodiment of the present application, by providing the pressure relief valve 3, the danger caused by excessively high exhaust pressure is avoided, so that the air filtration device has an overpressure protection function, and the safety of the air filtration device is improved.

[0046] Reference Figure 5 , shows a deflation principle diagram of an air filtering device in the present application. A solenoid valve 4 is provided in the air filtering device in the embodiment of the present application. During the deflation process, the solenoid valve 4 is opened, the deflation port 40 is connected, and the gas in the first cavity is discharged into the air inlet cavity of the air pump through the filter element 2, the deflation pipe 16, the deflation port 40, the solenoid valve 4, the return air port 100, and the return air pipe 10, and is discharged into the outside atmosphere through the air pump intake pipe. During the deflation process, the moisture of the desiccant is brought into the outside air by the gas flowing in the opposite direction to that during the inflation process, thereby extending the service life of the desiccant, so that the air filtering device has the function of air path control, and extends the service life of the air filtering device.

[0047] In the embodiment of the present application, the provision of a pressure relief valve 3 can avoid the danger caused by excessive gas pressure, thereby improving the safety of the air filtration device. Since the solenoid valve 4 is provided, the high-pressure gas can be reversely passed through the filter element 2 when the air spring is deflated, thereby taking away the moisture and impurities in the filter element 2, thereby extending the service life of the air filtration device. In this way, the air filtration device has the functions of air filtration and drying, air path control, overpressure protection, etc. The pressure relief valve 3 and the solenoid valve 4 can work independently. Compared with the related art in which the solenoid valve 4 and the pressure relief valve 3 work together to achieve the above functions, the structure of the present application is simpler and more reliable.

[0048] Optionally, the pressure relief valve 3 is movably connected to the pressure relief port 301 so that the pressure relief port 301 switches between a disconnected state and a connected state; in the disconnected state, the pressure relief valve 3 blocks the pressure relief port 301; in the connected state, the pressure relief valve 3 releases the blockage of the pressure relief port 301.

[0049] In actual application, by movably connecting the pressure relief valve 3 to the pressure relief port 301, the pressure relief port 301 can be switched between the on state and the off state, thereby making it easier and more convenient to control the on and off of the pressure relief port 301, thereby avoiding the danger caused by excessive exhaust pressure and improving the safety of the air filtration equipment.

[0050] Optionally, the pressure relief valve 3 includes a valve core 31 and an elastic member 32 . The elastic member 32 is connected between the cavity wall 6 of the second cavity 112 and the valve core 31 . The elastic member 32 is used to provide elastic force for resetting the valve core 31 .

[0051] In actual use, the elastic member 32 provides elastic force to the valve core 31, causing the valve core 31 to block the pressure relief port 301, thereby preventing gas from flowing out of the pressure relief port 301 during inflation. The cooperation between the valve core 31 and the elastic member 32 can achieve the blockage of the pressure relief port 301, thereby simplifying the structure of the pressure relief valve 3 and further reducing costs.

[0052] Optionally, the elastic member 32 may be a spring, one end of which is connected to the second cavity 112 and the cavity wall 6 opposite thereto, and the other end of which is connected to the valve core 31 .

[0053] In a specific application, the valve core 31 can block the pressure relief port 301 through the elastic force of the spring. Since the spring 3 is a relatively common elastic part with a simple structure and is easy to obtain, it can not only simplify the structural design of the pressure relief valve 3 but also further reduce costs.

[0054] In some optional embodiments of the present application, such as Figure 2 and Figure 3 As shown, a corresponding boss can be provided on the cavity wall 6 , one end of the spring is sleeved on the boss, and the other end is sleeved on the valve core 31 , thereby realizing the connection between the valve core 31 and the cavity wall 6 of the spring.

[0055] Optionally, the air filtering device further includes a guide member 7 , which is disposed on the valve core 31 . The valve core 31 is movably connected to the guide member 7 , and the guide member 7 is used to guide the movement of the valve core 31 .

[0056] In actual application, the size and shape of the valve core 31 can be adapted to the size and shape of the guide member 7. By movably connecting the valve core 31 to the guide member 7, the guiding effect of the guide member 7 can make the switching of the valve core 31 between the connected state and the disconnected state of the pressure relief port 301 more accurate and convenient, thereby improving the movement accuracy of the valve core 31.

[0057] Optionally, the guide member 7 may be a cylindrical structure having a second inner cavity 71 , and the valve core 31 is slidably connected to the second inner cavity 71 to block the pressure relief port 301 or release the blockage of the pressure relief port 301 .

[0058] like Figure 2 As shown, the cylindrical structure can be a cylindrical structure, and the pressure relief port 301 can be set at the bottom of the cylindrical structure. The second inner cavity 71 can be closed by movably connecting the valve core 31 with the inner wall of the cylindrical structure, and the valve core 31 can slide in the second inner cavity 71 to seal or unblock the pressure relief port 301. In actual applications, since the cylindrical structure is the most common structure, the structure of the air filtration equipment is simpler, saving costs.

[0059] Optionally, one end of the cylindrical structure extends into the first cavity 111 , and a pressure relief port 301 is provided on the portion of the cylindrical structure extending into the first cavity 111 .

[0060] like Figure 4 As shown, in some optional embodiments of the present application, one end of the cylindrical structure can be extended into the first cavity 111, and a pressure relief port 301 is provided at the bottom of the cylindrical structure extending into the first cavity 111. In practical applications, by extending the cylindrical structure into the first cavity 111, the distance between the valve core 31 and the first cavity 111 can be made closer, and the gas in the first cavity 111 can be discharged more accurately when the gas pressure in the first cavity 111 is too high, thereby further improving the safety of the air filtration device.

[0061] Optionally, the cylindrical structure is provided with a through hole 302 , which can be provided in the portion of the cylindrical structure located in the second cavity 112 . The through hole 302 is used to achieve communication between the second cavity 112 and the second inner cavity 71 .

[0062] In a specific application, by setting a through hole 302 in the cylindrical structure, the second cavity 112 and the second inner cavity 71 can be connected, so that the gas coming out of the pressure relief port 301 can simply flow into the second cavity 112, and then flow out of the second cavity through the return air port 100, so that the air filtration device can discharge the air in the first cavity 111 during the pressure relief process, avoiding the danger caused by excessive exhaust pressure, and improving the safety of the air filtration device.

[0063] Optionally, the solenoid valve 4 is fixedly connected to the vent 40 . When the solenoid valve 4 is closed, the solenoid valve 4 can block the vent 40 ; when the solenoid valve 4 is opened, the solenoid valve 4 can release the blockage of the vent 40 .

[0064] In actual application, the solenoid valve 4 is fixedly connected to the air vent 40 by bolts. By sealing or unblocking the air vent 40 by the solenoid valve 4, the high-pressure gas can pass through the filter element 2 in the opposite direction when the air spring is deflated, thereby taking away moisture and impurities in the filter element 2, effectively extending the service life of the air filtration equipment.

[0065] Preferably, the shell 1 in the embodiment of the present application can be made of plastic, thereby reducing the weight of the product.

[0066] Optionally, the pressure relief valve 3 and the solenoid valve 4 are arranged in the second cavity 112. In this application, the pressure relief valve 3 and the solenoid valve 4 are installed in the same cavity, which makes the structure of the air filtering equipment simpler and saves costs.

[0067] Optionally, the air filtering device further includes a filter element 2 , which is installed in the first cavity 111 .

[0068] Reference Figure 2 Optionally, the filter element 2 includes two filter screens 201 arranged at intervals along the axial direction of the shell 1, the filter screens 201 are connected to the inner wall of the shell 1, and the two spaced filter screens 201 and the inner wall of the shell 1 are enclosed to form a accommodating cavity 20 for accommodating the desiccant, and filter cotton 202 can be provided on the surface of the filter screen 201 close to the accommodating cavity 20.

[0069] In actual applications, two filter screens 201 are directly connected to the inner wall of the shell 1 to form a receiving cavity 20 with the inner wall of the shell. Desiccant is filled in the receiving cavity 20 so that the desiccant is in direct contact with the inner wall of the shell. More desiccant can be filled in the receiving cavity 20, thereby improving the ability of the filter element 2 to filter moisture in the gas.

[0070] Specifically, filter screen 201 is movably connected to the inner wall of housing 1. Filter screen 201 is made of metal and has multiple through-holes. Filter screen 201 allows gas to enter filter element 2 to filter larger particles of impurities in the gas. Furthermore, metal filter screen 201 prevents filter cotton 202 and desiccant from escaping from housing 1, thus serving as a securing mechanism. Filter cotton 202 is used to filter impurities in the gas, such as dust, soot, smoke, mineral dust, sand, powder, and other particles. The desiccant is used to remove moisture from the gas.

[0071] Optionally, the air filtering device may further include: an air vent pipe 16 , which is disposed in the first cavity 111 and communicates with the air vent 40 on the partition 5 , and is used to discharge the gas in the first cavity 111 .

[0072] In practical applications, refer to Figure 5By providing the vent pipe 16, during the venting process, when the high-pressure gas is discharged from the air inlet 80 into the first cavity 111, it can pass through the filter element 2, take away the moisture in the desiccant, and be discharged to the vent port 40 through the vent pipe 16, and then discharged to the second cavity 112 through the solenoid valve 4. The moisture in the desiccant can be taken away during the venting process, thereby extending the life of the desiccant and thus improving the service life of the air filtration equipment.

[0073] Optionally, the air filtering device further includes an air return pipe 10 , which is connected to the housing 1 at the air return port 100 , and the gas flowing out of the air return port 100 is discharged through the air return pipe 10 .

[0074] In actual application, one end of the return air pipe 10 is connected to the shell 1, and the other end is connected to the air pump, so that the gas in the second cavity 112 is discharged to the air pump through the return air pipe 10 and then discharged to the outside atmosphere through the air pump.

[0075] For example, the return air pipe 10 and the housing 1 may be connected by threaded connection, welding, etc. The embodiment of the present application does not specifically limit the connection method between the return air pipe 10 and the housing 1.

[0076] Optionally, the air filtration device further includes an end cap 8 having an air inlet 80 formed thereon, and the end cap 8 is connected to the first cavity 111. In a specific application, the end cap 8 is matingly connected to the open end of the first cavity 111 on the housing 1 to seal the first cavity 111. Preferably, a sealing ring 14 can be provided between the end cap 8 and the open end of the housing 1 to improve the sealing effect on the first cavity 111.

[0077] Optionally, the air filtering device also includes a sealing cover 11, which is mechanically connected to the shell 1 to close the second cavity 112. The cavity wall 6 is the inner wall of the sealing cover 11. The connection method between the sealing cover 11 and the shell 1 can be one of bolt connection, snap fastening and ultrasonic welding. The embodiment of the present application does not specifically limit the connection method between the sealing cover 11 and the shell 1.

[0078] Preferably, in order to improve the sealing effect of the sealing cover 11 on the second cavity 112 , a sealing gasket 15 may be provided between the sealing cover 11 and the housing 1 .

[0079] Optionally, the air filtering device further includes a connector 12, which is connected to the housing 1. The connector 12 is an air pipe mounting connector for connecting to a vehicle air suspension system. The connector 12 may be a quick-connect connector or a common connector.

[0080] Optionally, the air filtering device also includes an extrusion spring 13, which is arranged between the end cover 8 and the filter element 2. One end of the extrusion spring 13 abuts against the end cover 8, and the other end abuts against the filter screen 201, so that the filter element 2 is fixed in the first inner cavity 110 through its own elastic force to prevent the filter element 2 from sliding in the first inner cavity 110.

[0081] The specific implementation principles of the inflation process, deflation process, and degassing process of the air filtration device of the embodiment of the present application are as follows:

[0082] Inflation principle: refer to Figure 3 When the air pump inflates the air suspension system, the pressure relief valve 3 blocks the pressure relief port 301 under the action of the spring force F1, and the solenoid valve 4 closes, blocking the air release port 40. The high-pressure air from the air pump enters the first cavity from the air inlet 80, is filtered and dried by the filter element 2, and then is filled into the air suspension system from the exhaust port 90.

[0083] Deflation principle: refer to Figure 4 When the exhaust pressure is too high and exceeds the safety pressure value set by the pressure relief valve 3, the force F1 of the high-pressure gas on the pressure relief valve 3 is greater than the elastic force F2 of the elastic member 32, that is: F1>F2; the valve core 31 moves away from the pressure relief port 301, the elastic member 32 is compressed, the pressure relief valve 3 releases the blockage of the pressure relief port 301, the pressure relief port 301 is connected, the solenoid valve 4 is closed, and the air release port 40 is blocked. At this time, part of the gas in the first cavity 111 enters the return air pipe 10 through the pressure relief port 301 and the return air port 100 and is discharged into the air intake chamber of the air pump, and then is discharged into the outside atmosphere through the air intake pipe of the air pump until the exhaust pressure returns to the safety pressure range set by the pressure relief valve 3;

[0084] Deflation principle: refer to Figure 5 When the air suspension system is deflated, the gas enters the first cavity from the exhaust port 90, the solenoid valve 4 opens, the vent port 40 is connected, and the pressure relief valve 3 blocks the pressure relief port 301 under the action of the spring force F1. The gas in the first cavity passes through the filter element 2, the vent pipe 16, the vent port 40, and the solenoid valve 4 and enters the second cavity 112. It is discharged into the air pump intake cavity through the return port 100 and the return pipe 10, and then discharged into the outside atmosphere through the air pump intake pipe.

[0085] The air filtration device provided in the embodiment of the present application realizes the pressure relief process through the independent action of the pressure relief valve 3 and realizes the air release process through the independent action of the solenoid valve 4. The two valves act independently without affecting each other, thereby further improving the reliability of the air filtration device.

[0086] An embodiment of the present application also provides a vehicle comprising the above-mentioned air filtering device.

[0087] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An air filtering device, characterized in that: include: housing, pressure relief valve and solenoid valve; The housing has a first inner cavity, a partition is provided in the first inner cavity, and the partition divides the first inner cavity into a first cavity and a second cavity. The partition is provided with a pressure relief port and an air release port communicating with the first cavity and the second cavity; The pressure relief valve is connected to the pressure relief port to control the on / off of the pressure relief port, and the solenoid valve is connected to the air release port to control the on / off of the air release port.

2. The air filtering device according to claim 1, characterized in that The pressure relief valve is movably connected to the pressure relief port so that the pressure relief port can be switched between a disconnected state and a connected state; in the disconnected state, the pressure relief valve blocks the pressure relief port; in the connected state, the pressure relief valve releases the blockage of the pressure relief port.

3. The air filtering device according to claim 2, characterized in that The pressure relief valve includes a valve core and an elastic member. The elastic member is connected between the cavity wall of the second cavity and the valve core. The elastic member is used to provide elastic force for restoring the valve core.

4. The air filtering device according to claim 3, characterized in that The elastic member is a spring.

5. The air filtering device according to claim 3, characterized in that: It also includes a guide member, wherein the guide member is arranged on the partition; The valve core is movably connected to the guide member, and the guide member is used to guide the movement of the valve core.

6. The air filtering device according to claim 5, characterized in that The guide member is a cylindrical structure having a second inner cavity, and the valve core is slidably connected to the second inner cavity.

7. The air filtering device according to claim 6, characterized in that: One end of the cylindrical structure extends into the first cavity, and the portion of the cylindrical structure extending into the first cavity is provided with the pressure relief port.

8. The air filtering device according to claim 6, characterized in that The cylindrical structure is provided with a through hole, and the through hole is used to achieve communication between the second cavity and the second inner cavity.

9. The air filtering device according to claim 1, characterized in that: The solenoid valve is fixedly connected to the vent port. When the solenoid valve is closed, the solenoid valve can block the vent port; when the solenoid valve is opened, the solenoid valve can release the blockage of the vent port.

10. The air filtering device according to any one of claims 1 to 9, characterized in that: The pressure relief valve and the solenoid valve are arranged in the second cavity.

11. The air filtering device according to claim 1, characterized in that It also includes a filter element installed in the first cavity.

12. The air filtering device according to claim 11, characterized in that The filter element includes two filter screens spaced apart along the axial direction of the housing. The filter screens are connected to the inner wall of the housing. The two spaced apart filter screens and the inner wall of the housing form a receiving cavity for receiving a desiccant.

13. The air filtering device according to claim 11, characterized in that The air filtering device further includes an air vent pipe, which is disposed in the first cavity and communicates with the air vent port on the partition, and is used to discharge the gas in the first cavity.

14. The air filtering device according to claim 1, characterized in that The housing includes an air inlet, an air outlet, and an air return port, wherein the air inlet is connected to the first cavity, the air outlet is connected to the first cavity, and the air return port is connected to the second cavity; The working process of the air filtration device includes an inflation process, a deflation process and a degassing process; During the inflation process, the pressure relief port and the air release port are blocked, and the gas in the first cavity flows in from the air inlet and flows out from the air exhaust port; During the deflation process, the pressure relief port is open and the vent port is blocked, so that part of the gas in the first cavity flows out from the vent port, and the other part flows into the second cavity from the pressure relief port and is discharged from the second cavity from the gas return port; During the deflation process, the deflation port is open, the pressure relief port is blocked, and the gas in the first cavity flows from the deflation port into the second cavity and is discharged from the second cavity from the gas return port.

15. A vehicle, characterized in that: The vehicle comprises: the air filtering device according to any one of claims 1-14.

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