Air filtering equipment, air suspension system and vehicle

Abstract

The utility model discloses an air filtration equipment, air suspension system and vehicle, wherein the air filtration equipment includes: the casing is equipped with the filter chamber, the casing is equipped with the pressure relief port, the pressure relief port is communicated with the filter chamber; the pressure relief valve is arranged at one end of the pressure relief opening, and the pressure relief valve is provided with a matching part; the driving assembly is arranged on the shell, the driving assembly comprises a transmission part, the transmission part can move between a first position and a second position, when the transmission part is located at the first position, the pressure release valve can be switched between an open state and a closed state according to air pressure in the filter cavity, and when the transmission part is located at the second position, the pressure release valve can be switched between an open state and a closed state according to the air pressure in the filter cavity. When the transmission part moves towards the second position from the first position, the transmission part is matched with the matching part, and the transmission part drives the pressure release valve to be switched from the closed state to the open state.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to an air filtering device, an air suspension system and a vehicle. Background Art

[0002] Air filtration plays a crucial role in a vehicle's air suspension system, filtering and drying the air entering the system to ensure proper operation and extend its service life. Existing air filtration systems rely on solenoid valves to control a pressure relief valve to deflate and release air. However, these air filtration systems are complex, lack compactness, and have low reliability. Utility Model Content

[0003] The first object of the present utility model is to provide a new technical solution for air filtering equipment, which can at least solve one of the problems of the existing air filtering equipment, namely, poor structural compactness and low reliability.

[0004] The second object of the present invention is to provide a new technical solution for an air suspension system.

[0005] The third object of the present invention is to provide a new technical solution for a vehicle.

[0006] According to a first aspect of the present utility model, an air filtering device is provided, comprising: a shell, the shell being provided with a filter chamber, the shell being provided with a pressure relief port, the pressure relief port being connected to the filter chamber; a pressure relief valve, the pressure relief valve being provided at one end of the pressure relief port, the pressure relief valve being provided with a fitting portion; a drive assembly, the drive assembly being provided at the shell, the drive assembly comprising a transmission portion, the transmission portion being movable between a first position and a second position, wherein, when the transmission portion is located at the first position, the pressure relief valve can switch between an open state and a closed state according to the air pressure in the filter chamber, and when the transmission portion moves from the first position to the second position, the transmission portion cooperates with the fitting portion, and the transmission portion drives the pressure relief valve to switch from the closed state to the open state.

[0007] Optionally, the drive assembly includes: a transmission member, the transmission member is formed as the transmission part, the transmission member is movable along the first direction between the first position and the second position, a driving member, the driving member is provided on the housing, the driving member is connected to the transmission member, and the driving member is used to drive the transmission member to move between the first position and the second position.

[0008] Optionally, the pressure relief valve includes: a valve core, the valve core is provided with the fitting portion, and the valve core is movably provided on the housing between a third position and a fourth position along the first direction, wherein when the valve core is located at the third position, the pressure relief valve is in the closed state, and when the valve core is located at the fourth position, the pressure relief valve is in the open state.

[0009] Optionally, the transmission member is movably provided on the valve core along the first direction.

[0010] Optionally, the valve core is provided with a connecting groove extending along the first direction, and in the first direction, the inner wall surface of the connecting groove at one end away from the pressure relief port is formed as the fitting portion, and the transmission member is movably provided in the connecting groove along the first direction.

[0011] Optionally, the connecting groove is a through groove, the driving assembly includes two driving members, the first end of the transmission member is connected to one of the driving members, and the second end of the transmission member passes through the connecting groove and is connected to the other driving member.

[0012] Optionally, a first installation channel is provided at one end of the pressure relief port away from the filter chamber, a pressure relief hole is provided on the side wall of the first installation channel, and the valve core is movably provided in the first installation channel between the third position and the fourth position. When the valve core is located at the third position, the pressure relief port is disconnected from the pressure relief hole, and when the valve core is located at the fourth position, the pressure relief port is connected to the pressure relief hole.

[0013] Optionally, a piston portion is provided at one end of the valve core close to the pressure relief port, and when the valve core is located in the third position, the piston portion is inserted into the pressure relief port. The pressure relief valve also includes: a sealing member, which is sleeved on the valve core and is suitable for filling the gap between the circumferential wall surface of the valve core and the wall surface of the first mounting channel.

[0014] Optionally, the shell includes: a main shell, the main shell is provided with the filter chamber, the first end of the main shell includes a first area and a second area, the first area is provided with an air outlet, the second area is provided with the pressure relief port, the second end of the main shell is provided with an air inlet, the air outlet and the air inlet are respectively connected to the filter chamber; a sub-shell, the sub-shell is provided in the second area, the second area and the inner wall surface of the sub-shell define an installation cavity, the drive assembly and the pressure relief valve are both provided in the installation cavity, the sub-shell is provided with an exhaust port, and the exhaust port is connected to the installation cavity.

[0015] Optionally, a protrusion is provided on the inner wall surface of the installation cavity, and the protrusion is provided with a guide channel. An end of the valve core away from the pressure relief port is movably provided in the guide channel along a first direction.

[0016] Optionally, the pressure relief valve further includes: an elastic member, which is used to provide an elastic force to the valve core from the fourth position toward the third position, wherein the first end of the elastic member abuts against the valve core, and the second end of the elastic member abuts against the protrusion.

[0017] Optionally, the air filtering device further includes: a filter element, which is arranged in the filter cavity, the filter element is suitable for filtering and drying gas, the outer peripheral surface of the filter element is in contact with the inner wall surface of the filter cavity, and the filter element is provided with a second installation channel; a pressure relief pipe, the pressure relief pipe is arranged in the second installation channel, the first end of the pressure relief pipe is arranged at one end of the pressure relief port close to the filter cavity, and the second end of the pressure relief pipe is connected to the filter cavity.

[0018] According to a second aspect of the present invention, an air suspension system is provided, comprising the above-mentioned air filtering device.

[0019] According to a third aspect of the present invention, a vehicle is provided, comprising the above-mentioned air suspension system.

[0020] According to the air filtering device of the present invention, by setting a driving component, the pressure relief valve can not only realize the automatic deflation process according to the air pressure activity in the filter chamber, but also realize the controlled deflation process through the driving component. Moreover, the structure is compact and the integration is high. Compared with the existing technology, the structural compactness and reliability of the air filtering device are effectively improved.

[0021] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0023] Figure 1 This is a perspective view of an air filtration device according to an embodiment of the present invention;

[0024] Figure 2 This is an exploded view of the structure of an air filtration device according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the principle of an air filter device according to an embodiment of the present invention when air is being taken into an air suspension system;

[0026] Figure 4 yes Figure 3 An enlarged schematic diagram of the center circle A;

[0027] Figure 5 This is a schematic diagram of the air filtering device according to one embodiment of the present invention during automatic deflation;

[0028] Figure 6 This is a schematic diagram of the air filtration device according to one embodiment of the present invention during controlled deflation;

[0029] Figure 7 This is a schematic diagram of the principle of an air filtering device according to another embodiment of the present invention during controlled deflation.

[0030] Reference numerals:

[0031] Air filtering device 100;

[0032] Housing 10; pressure relief port 10a;

[0033] Main housing 11; filter chamber 11a; air outlet 11b; first end cover 111; air inlet 111a;

[0034] The auxiliary housing 12; the mounting cavity 12a; the exhaust port 12b; the first mounting channel 121; the pressure relief hole 121a; the second end cover 122; the raised portion 123; the guide channel 123a; the second sealing ring 124;

[0035] Pressure relief valve 20; valve core 21; piston portion 21a; connecting groove 211; matching portion 211a; sealing member 22; elastic member 23;

[0036] Driving assembly 30; transmission member 31; driving member 32;

[0037] Filter element 40; filter housing 41; filter screen 42;

[0038] Pressure relief pipe 50; air outlet pipe 60; air pipe joint 61; air return pipe 70; compression spring 80. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0041] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0042] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0043] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0044] The air filtering device 100 according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] like Figures 1 to 7 As shown, the air filtering device 100 according to an embodiment of the present invention includes: a housing 10 , a pressure relief valve 20 and a drive assembly 30 .

[0046] Specifically, the housing 10 is provided with a filter chamber 11a, the housing 10 is provided with a pressure relief port 10a, the pressure relief port 10a is connected to the filter chamber 11a, the pressure relief valve 20 is provided at one end of the pressure relief port 10a, the pressure relief valve 20 is provided with a matching portion 211a, the driving assembly 30 is provided in the housing 10, the driving assembly 30 includes a transmission portion, the transmission portion is movable between a first position and a second position, wherein, when the transmission portion is in the first position, the pressure relief valve 20 can switch between an open state and a closed state according to the air pressure in the filter chamber 11a, and when the transmission portion moves from the first position to the movable second position, the transmission portion cooperates with the matching portion 211a, and the transmission portion drives the pressure relief valve 20 to switch from a closed state to an open state.

[0047] In other words, if Figures 1 to 7 As shown, the air filtering device 100 according to an embodiment of the present invention mainly includes a shell 10, a pressure relief valve 20 and a drive assembly 30, wherein the shell 10 is provided with a filter chamber 11a extending along its length direction, and the shell 10 is provided with a pressure relief port 10a at one end of the filter chamber 11a, and the first end of the pressure relief port 10a is connected to the filter chamber 11a, and the pressure relief valve 20 can be installed at the second end of the pressure relief port 10a. The pressure relief valve 20 has a closed state and an open state. When the pressure relief valve 20 is in the closed state, the gas in the filter chamber 11a will not flow out from the pressure relief port 10a. When the pressure relief valve 20 is in the open state, the gas in the filter chamber 11a can flow out from the pressure relief port 10a, and the pressure relief valve 20 is provided with a mating portion 211a.

[0048] The driving assembly 30 is disposed in the housing 10 , and the driving assembly 30 has a transmission portion movable between a first position and a second position. When the transmission part is in the first position, the drive assembly 30 will not affect the switching state of the pressure relief valve 20, that is, the pressure relief valve 20 can switch between the open state and the closed state according to the air pressure in the filter chamber 11a. For example, when the air pressure in the filter chamber 11a is less than the set value, the pressure relief valve 20 is in the closed state. When the air pressure in the filter chamber 11a is greater than the set value, the pressure relief valve 20 can automatically switch from the closed state to the open state under the action of the air pressure, so that the gas in the filter chamber 11a can flow out from the pressure relief port 10a, thereby avoiding damage to the equipment due to excessive pressure and enhancing the safety and reliability of the equipment; when the transmission part moves from the first position to the second position, the transmission part cooperates with the matching part 211a, for example, the transmission part abuts against the matching part 211a, and at the same time drives the pressure relief valve 20 to switch from the closed state to the open state. When the transmission part is in the second position, the pressure relief valve 20 is in the open state, thereby realizing a controlled deflation process.

[0049] It should be noted that other components of the air filtering device 100 according to the embodiment of the present invention, such as the undescribed parts of the housing 10 and the pressure relief valve 20 , are known to those skilled in the art and will not be described in detail in this embodiment.

[0050] Therefore, according to the air filtering device 100 of the embodiment of the present invention, by setting the drive component 30, the pressure relief valve 20 can not only realize the automatic deflation process according to the air pressure activity in the filter chamber 11a, but also realize the controlled deflation process through the drive component 30. Moreover, it has a compact structure and high integration. Compared with the existing technology, it effectively improves the structural compactness and reliability of the air filtering device 100.

[0051] According to one embodiment of the present invention, the driving assembly 30 includes: a transmission member 31 and a driving member 32, the transmission member 31 is formed as a transmission part, the transmission member 31 is movable between a first position and a second position along a first direction, the driving member 32 is provided in the housing 10, the driving member 32 is connected to the transmission member 31, and the driving member 32 is used to drive the transmission member 31 to move between the first position and the second position.

[0052] Specifically, if Figure 2 and Figure 3As shown, the driving assembly 30 mainly includes a transmission member 31 and a driving member 32, wherein the transmission member 31 is the transmission part of the driving assembly 30, and the transmission member 31 and the transmission part are distributed along a first direction. The first direction can be the length direction of the shell 10, and the driving member 32 can be an electric telescopic rod. The driving member 32 is fixedly connected to the shell 10, and the driving end of the driving member 32 is movable along the first direction. The transmission member 31 is fixedly connected to the driving end of the driving member 32, so that the driving member 32 can drive the transmission member 31 to move between a first position and a second position along the first direction.

[0053] In this embodiment, the pressure relief valve 20 can be driven to switch from a closed state to an open state by the driving member 32 and the transmission member 31 . This has a simple structure and high reliability, and can effectively reduce the production cost of the air filtering device 100 .

[0054] In some specific embodiments of the present invention, the pressure relief valve 20 includes: a valve core 21, the valve core 21 is provided with a matching portion 211a, and the valve core 21 is movably provided on the housing 10 between a third position and a fourth position along a first direction, wherein when the valve core 21 is located at the third position, the pressure relief valve 20 is in a closed state, and when the valve core 21 is located at the fourth position, the pressure relief valve 20 is in an open state.

[0055] That is to say, if Figure 3 and Figure 5 As shown, the pressure relief valve 20 mainly includes a valve core 21, a fitting portion 211a is provided on the valve core 21, the valve core 21 is located at an end of the pressure relief port 10a away from the filter chamber 11a, and the valve core 21 is movable between a third position and a fourth position along a first direction, the third position is closer to the pressure relief port 10a, and the fourth position is farther away from the pressure relief port 10a.

[0056] When the valve core 21 is in the third position, the end of the valve core 21 can abut against the outer shell 10 on the periphery of the pressure relief port 10a, thereby blocking the second end of the pressure relief port 10a. At this time, the pressure relief valve 20 is in a closed state, and the gas inside the filter chamber 11a will not flow out from the pressure relief port 10a. Figures 5 to 7 As shown, when the valve core 21 is located at the fourth position, there is a gap between the valve core 21 and the second end of the pressure relief port 10a. At this time, the pressure relief valve 20 is in an open state, and the gas in the filter cavity 11a can flow out from the pressure relief port 10a.

[0057] In this embodiment, when the transmission member 31 is located at the first position, the valve core 21 can move between the third position and the fourth position according to the air pressure in the filter chamber 11a. When the transmission member 31 is located at the second position, the valve core 21 is located at the fourth position.

[0058] According to an embodiment of the present invention, the transmission member 31 is movably disposed on the valve core 21 along the first direction.

[0059] like Figures 2 to 7 As shown, in order to improve the stability of the valve core 21 and the transmission member 31 during movement, the transmission member 31 can be movably arranged on the valve core 21 along the first direction. For example, a guide rail can be provided on the valve core 21, and a part of the transmission member 31 can be movably arranged in the guide rail along the first direction, so that the valve core 21 and the transmission member 31 can guide and limit each other, which can effectively improve the stability during movement and is conducive to assembly.

[0060] In some specific embodiments of the present invention, the valve core 21 is provided with a connecting groove 211 extending along a first direction. In the first direction, the inner wall surface of the connecting groove 211 at one end away from the pressure relief port 10a is formed as a mating portion 211a, and the transmission member 31 is movably provided in the connecting groove 211 along the first direction.

[0061] Specifically, if Figures 2 to 7 As shown, the side wall of the valve core 21 is provided with a connecting groove 211 extending along the first direction. In the first direction, the inner wall surface of the connecting groove 211 at one end away from the pressure relief port 10a is formed as a fitting portion 211a. The transmission member 31 can be formed as a rod body extending in the depth direction of the connecting groove 211. The transmission member 31 is movably provided in the connecting groove 211 along the first direction. The length of the connecting groove 211 is not less than the sum of the dimension from the third position to the fourth position and the dimension of the transmission member 31 in the first direction.

[0062] It should be noted that, in the first direction, the specific position of the connecting groove 211 on the valve core 21 can be adaptively adjusted according to the specific length of the connecting groove 211 , which will not be described in detail in this embodiment.

[0063] In this embodiment, the inner wall surface of the end of the connecting groove 211 away from the pressure relief port 10a is formed as a fitting portion 211a, which has a simple structure and is convenient for production and subsequent assembly. In addition, the setting of the connecting groove 211 can effectively reduce the weight of the transmission member 31.

[0064] According to one embodiment of the present invention, the connecting groove 211 is a through groove, the driving assembly 30 includes two driving members 32, the first end of the transmission member 31 is connected to one of the driving members 32, and the second end of the transmission member 31 passes through the connecting groove 211 and is connected to the other driving member 32.

[0065] Specifically, if Figures 2 to 7As shown, the connecting groove 211 is formed as a through groove that passes through the transmission member 31, so that the weight of the transmission member 31 can be further reduced, and one end of the transmission member 31 can pass through the connecting groove 211. In this embodiment, the driving assembly 30 includes two driving members 32, and the two driving members 32 are spaced apart along the depth direction of the connecting groove 211. The first end of the transmission member 31 is fixedly connected to the output end of one of the driving members 32, and the second end of the transmission member 31 passes through the connecting groove 211 and is fixedly connected to the output end of the other driving member 32.

[0066] Therefore, the two driving members 32 can apply driving force to the transmission member 31 at both ends of the transmission member 31, which can effectively improve the stability of the transmission member 31 during movement, thereby ensuring the reliability of the air filtering device 100.

[0067] In some specific embodiments of the present invention, a first installation channel 121 is provided at one end of the pressure relief port 10a away from the filter chamber 11a, and a pressure relief hole 121a is provided on the side wall of the first installation channel 121. The valve core 21 is movably provided in the first installation channel 121 between a third position and a fourth position. When the valve core 21 is in the third position, the pressure relief port 10a and the pressure relief hole 121a are disconnected. When the valve core 21 is in the fourth position, the pressure relief port 10a and the pressure relief hole 121a are connected.

[0068] like Figure 3 As shown, in order to improve the stability of the valve core 21 during movement, the housing 10 is provided with a first installation channel 121 extending along the first direction at the end of the pressure relief port 10a away from the filter chamber 11a, and the side wall of the first installation channel 121 is provided with a pressure relief hole 121a, and the pressure relief hole 121a is spaced apart from the pressure relief port 10a and distributed along the first direction. The first installation channel 121 is adapted to the valve core 21, and one end of the valve core 21 is movably provided in the first installation channel 121 between the third position and the fourth position, so that the first installation channel 121 can guide the valve core 21, thereby effectively improving the stability of the valve core 21 during movement.

[0069] In this embodiment, when the valve core 21 is located in the third position, the valve core 21 blocks the air flow channel between the pressure relief port 10a and the pressure relief hole 121a. At this time, the pressure relief port 10a and the pressure relief hole 121a are disconnected, and the gas in the filter chamber 11a will not flow out through the pressure relief port 10a. When the valve core 21 is located in the fourth position, the valve core 21 avoids the air flow channel between the pressure relief port 10a and the pressure relief hole 121a, and the gas in the filter chamber 11a can pass through the pressure relief port 10a and flow out from the pressure relief hole 121a.

[0070] According to one embodiment of the present invention, a piston portion 21a is provided at one end of the valve core 21 close to the pressure relief port 10a. When the valve core 21 is located in the third position, the piston portion 21a is inserted into the pressure relief port 10a. The pressure relief valve 20 also includes: a sealing member 22, which is sleeved on the valve core 21. The sealing member 22 is suitable for filling the gap between the circumferential wall surface of the valve core 21 and the wall surface of the first installation channel 121.

[0071] Specifically, if Figure 3 and Figure 5 As shown, a piston portion 21a is provided at one end of the valve core 21 close to the pressure relief port 10a. The piston portion 21a can be made of rubber and can be integrally formed with the valve core 21. When the valve core 21 is in the third position, the piston portion 21a is inserted into the pressure relief port 10a, thereby improving the sealing performance of the valve core 21 and effectively avoiding the problem of air leakage in the pressure relief hole 121a when the valve core 21 is in the third position, thereby ensuring the reliability of the air filtering device 100; when the valve core 21 is in the fourth position, the piston portion 21a is separated from the pressure relief port 10a, and the gas in the filter chamber 11a can pass through the pressure relief port 10a and flow out from the pressure relief hole 121a.

[0072] Furthermore, if Figure 3 As shown, the side wall of the valve core 21 at one end close to the pressure relief port 10a is provided with an annular mounting groove extending along its circumference, and the valve core 21 is provided with a sealing member 22, such as a rubber ring, at the position of the annular mounting groove. The sealing member 22 can fill the gap between the circumferential wall surface of the valve core 21 and the first mounting channel 121, thereby further improving the sealing performance of the valve core 21 and further avoiding the problem of air leakage in the pressure relief hole 121a when the valve core 21 is in the third position.

[0073] In some specific embodiments of the present invention, the shell 10 includes: a main shell 11 and a sub-shell 12, the main shell 11 is provided with a filter chamber 11a, the first end of the main shell 11 includes a first area and a second area, the first area is provided with an air outlet 11b, and the second area is provided with a pressure relief port 10a, the second end of the main shell 11 is provided with an air inlet 111a, the air outlet 11b and the air inlet 111a are respectively connected to the filter chamber 11a, the sub-shell 12 is provided in the second area, and the second area and the inner wall surface of the sub-shell 12 define an installation cavity 12a, the drive assembly 30 and the pressure relief valve 20 are both provided in the installation cavity 12a, and the sub-shell 12 is provided with an exhaust port 12b, and the exhaust port 12b is connected to the installation cavity 12a.

[0074] In other words, if Figure 2 and Figure 3As shown, the shell 10 according to the embodiment of the present invention mainly includes a main shell 11 and a sub-shell 12, wherein the main shell 11 is provided with a filter chamber 11a extending along the first direction, and the main shell 11 has a first end and a second end relatively arranged in the first direction, and the first end of the main shell 11 is divided into a first area and a second area, and the first area is provided with an air outlet 11b connected to the filter chamber 11a, and the air outlet 11b is connected to an air outlet pipe 60 extending along the first direction, and the first end of the air outlet pipe 60 is fixedly connected to the main shell 11, and the second end of the air outlet pipe 60 is connected to an air pipe joint 61, which is used to connect to the pipeline of the air suspension system, and the pressure relief port 10a is provided in the second area; the second end of the main shell 11 is provided with an air inlet 111a connected to the filter chamber 11a, and when in use, external gas can enter the filter chamber 11a from the air inlet 111a.

[0075] The secondary housing 12 is disposed in the second region of the first end of the main housing 11. The secondary housing 12 can be integrally formed with the main housing 11 or fixedly connected thereto by welding or other means. The secondary housing 12 and the surface of the second region define a mounting cavity 12a. The drive assembly 30 and the pressure relief valve 20 are both mounted in the mounting cavity 12a. The secondary housing 12 also has an exhaust port 12b in communication with the mounting cavity 12a. When the valve core 21 is in the fourth position, gas within the filter chamber 11a can flow out of the exhaust port 12b.

[0076] In this embodiment, the air outlet 11b, the auxiliary shell 12, the drive assembly 30 and the pressure relief valve 20 are all located at the first end of the main shell 11. The structure is compact, and the space corresponding to the first area can provide installation space for other structures, which is convenient for subsequent installation.

[0077] Furthermore, if Figure 5 As shown, a return air pipe 70 is provided on the exterior of the secondary housing 12. A first end of the return air pipe 70 communicates with the exhaust port 12b, and a second end of the return air pipe 70 can communicate with the intake chamber of the air pump of the air suspension system. When the valve core 21 is in the fourth position, the gas within the filter chamber 11a can be discharged into the intake chamber of the air pump through the return air pipe 70 and then discharged from the intake port of the air pump.

[0078] According to one embodiment of the present invention, a protrusion 123 is provided on the inner wall of the installation cavity 12a. The protrusion 123 is provided with a guide channel 123a. The end of the valve core 21 away from the pressure relief port 10a is movably provided in the guide channel 123a along the first direction.

[0079] Specifically, if Figure 3 and Figure 4As shown, the inner wall surface of the installation cavity 12a is provided with a protrusion 123 extending along the first direction, and the protrusion 123 will not affect the movement of the transmission member 31 in the first direction. The end of the protrusion 123 close to the valve core 21 is provided with a guide channel 123a extending along the first direction, and the end of the valve core 21 away from the pressure relief port 10a is movably provided in the guide channel 123a along the first direction.

[0080] Therefore, the guide channel 123a can be used to guide the end of the valve core 21 away from the pressure relief port 10a, which can effectively improve the stability of the valve core 21 and the transmission member 31 during movement, thereby ensuring the reliability of the air filtering device 100.

[0081] In some specific embodiments of the present invention, the pressure relief valve 20 further includes: an elastic member 23, which is used to provide an elastic force to the valve core 21 from the fourth position toward the third position, and the first end of the elastic member 23 abuts against the valve core 21, and the second end of the elastic member 23 abuts against the protrusion 123.

[0082] That is to say, if Figure 2 and Figure 3 As shown, the pressure relief valve 20 mainly includes a valve core 21 and an elastic member 23. The valve core 21 is provided with a flange portion. The elastic member 23 can be a spring. The elastic member 23 is sleeved on the valve core 21. The elastic member 23 is located between the flange portion and the protrusion 123, and the first end of the elastic member 23 abuts against the flange portion, and the second end of the elastic member 23 abuts against the protrusion 123. The elastic member 23 can apply an elastic force toward the pressure relief port 10a to the valve core 21, so that the valve core 21 can move between the third position and the fourth state according to the air pressure in the filter chamber 11a.

[0083] In addition, the pressure relief valve 20 may also be other structures in the prior art, which will not be described in detail in this embodiment.

[0084] like Figures 3 to 6 As shown, according to one embodiment of the present invention, a filter element 40 is provided in the filter cavity 11a, and a filter housing 41 is provided on the outside of the filter element 40. There is a gap between the filter housing 41 and the inner wall surface of the filter cavity 11a. The filter housing 41 has a first open end and a second open end opposite to each other in a first direction. The first open end of the filter housing 41 is provided at the air outlet 11b, and the second open end of the filter housing 41 faces the air inlet 111a. When the air suspension system is inflated, the gas enters the filter element 40 through the second open end of the filter housing 41, and enters the air suspension system through the filter element 40 and the air inlet 111a. When the air suspension system is deflated, the gas in the air suspension system enters the first open end of the filter housing 41 through the air outlet 11b, enters the filter element 40, and flows to the second open end of the filter housing 41. After passing through the second open end of the filter housing 41, the gas flows to the pressure relief port 10a through the gap between the outer peripheral surface of the filter housing 41 and the inner wall surface of the filter cavity 11a, and is discharged from the pressure relief port 10a.

[0085] In this embodiment, the gas entering the air suspension can be filtered and dried by the filter element 40, and the gas discharged by the air suspension system can carry out the moisture in the filter element 40, which is beneficial to improving the service life of the filter element 40.

[0086] According to one embodiment of the present invention, the air filtering device 100 also includes: a filter element 40 and a pressure relief pipe 50. The filter element 40 is arranged in the filter chamber 11a. The filter element 40 is suitable for filtering and drying the gas. The outer peripheral surface of the filter element 40 is in contact with the inner wall surface of the filter chamber 11a. The filter element 40 is provided with a second installation channel. The pressure relief pipe 50 is provided in the second installation channel. The first end of the pressure relief pipe 50 is provided at one end of the pressure relief port 10a close to the filter chamber 11a, and the second end of the pressure relief pipe 50 is connected to the filter chamber 11a.

[0087] Specifically, if Figure 7 As shown, a filter element 40 is disposed within the filter cavity 11a. The filter element 40 has a plurality of adsorption holes, through which the gas passing therethrough can be filtered and dried. The outer peripheral surface of the filter element 40 is in contact with the inner wall surface of the filter cavity 11a, thereby fully utilizing the space of the filter cavity 11a. A desiccant can also be disposed within the filter element 40 to enhance the drying effect of the filter element 40. The filter element 40 is also provided with a second mounting channel extending along a first direction. A pressure relief pipe 50 is inserted into the second mounting channel. The first end of the pressure relief pipe 50 is disposed at an end of the pressure relief port 10a proximal to the filter cavity 11a, so that the pressure relief pipe 50 communicates with the pressure relief port 10a, and the second end of the pressure relief pipe 50 communicates with the filter cavity 11a.

[0088] Therefore, according to the air filtering device 100 of the embodiment of the present invention, when the air suspension system is deflated, the gas in the air suspension system first passes through the filter element 40, and then is discharged from the pressure relief port 10a through the pressure relief pipe 50. The gas can bring out the moisture in the filter element 40, which can effectively extend the service life of the filter element 40. Compared with the above embodiment, the filter element 40 of this embodiment does not need to be provided with a filter housing 41 structure, has a simple structure, and has a low production cost.

[0089] Optionally, the pressure relief pipe 50 is fixedly connected to the main housing 11 , for example, the pressure relief pipe 50 is welded to the main housing 11 .

[0090] like Figure 2As shown, according to one embodiment of the present invention, the second end of the main shell 11 is provided with a first end cover 111, and the air inlet 111a is provided on the first end cover 111. The first end cover 111 can be installed and fixed by bolts. When the first end cover 111 is not installed, there is an opening at one end of the filter chamber 11a, and the filter element 40 can be installed in the filter chamber 11a from the opening; the end of the auxiliary shell 12 away from the main shell 11 is provided with a second end cover 122, and the second end cover 122 can be installed and fixed by bolts, and the protrusion 123 is provided on the inner side of the second end cover 122. When the second end cover 122 is not installed, there is an opening at one end of the installation chamber 12a, and the pressure relief valve 20 and the drive assembly 30 can be installed in the installation chamber 12a from the opening.

[0091] Alternatively, as Figure 2 As shown, a first sealing ring is provided between the open end of the first end cover 111 and the main shell 11, and the gap between the first end cover 111 and the open end of the main shell 11 can be filled by the first sealing ring, thereby ensuring the air tightness of the filter cavity 11a; a second sealing ring 124 is provided between the second end cover 122 and the open end of the auxiliary shell 12, and the gap between the second end cover 122 and the open end of the auxiliary shell 12 can be filled by the second sealing ring 124, thereby ensuring the air tightness of the installation cavity 12a.

[0092] In some specific embodiments of the present invention, filter screens 42 are provided at both ends of the filter element 40 in the first direction. When the filter element 40 has a filter housing 41 , the filter screens 42 are installed in the filter housing 41 .

[0093] like Figure 2 As shown, according to one embodiment of the present invention, a compression spring 80 is provided between the filter element 40 and the first end cover 111, the first end of the compression spring 80 abuts against the filter element 40, and the second end of the compression spring 80 abuts against the first end cover 111. The compression spring 80 can apply a force toward the air outlet 11b to the filter element 40, so that the first open end of the filter housing 41 can stop against the inner wall surface of the filter chamber 11a, and the structure is simple, which is convenient for production and assembly.

[0094] When the air filtering device 100 according to the embodiment of the present invention is in use, the air outlet pipe 60 is connected to the pipeline of the air suspension system through the air pipe joint 61, the air inlet 111a is connected to the air outlet end of the air pump, and the second end of the return air pipe 70 is connected to the air inlet cavity of the air pump.

[0095] like Figure 3As shown, when the air suspension system is inflated, the pressure relief valve 20 is in a closed state, the transmission part of the drive assembly 30 is in the first position, and the air pump transports the gas from the air inlet 111a to the filter chamber 11a. The air pressure in the filter chamber 11a gradually increases, and the gas entering the filter chamber 11a passes through the filter element 40 and flows into the pipeline of the air suspension system through the outlet pipe 60. When the gas passes through the filter element 40, the filter element 40 can filter and dry the passing gas.

[0096] like Figure 5 As shown, when the air pressure in the filter chamber 11a exceeds the safety pressure range set by the air relief valve, the force exerted by the gas in the filter chamber 11a on the valve core 21 is greater than the elastic force of the elastic member 23, the elastic member 23 is compressed, and the valve core 21 moves from the third position to the fourth position under the force of the gas, and the pressure relief valve 20 is in an open state. The gas in the filter chamber 11a can pass through the pressure relief port 10a and flow into the installation chamber 12a from the pressure relief hole 121a, and pass through the installation chamber 12a and the return air pipe 70 to be discharged into the air inlet chamber of the air pump, and finally be discharged through the air outlet end of the air pump until the air pressure in the filter chamber 11a returns to the set safety pressure range. When the air pressure in the filter chamber 11a returns to the set safety pressure range, the valve core 21 moves from the fourth position to the third position under the elastic force of the elastic member 23.

[0097] like Figure 7 As shown, during air suspension system deflation, the control driver 32 extends in the first direction, causing the transmission member 31 to abut against the mating portion. The transmission member 31 then moves from the first position toward the second position. During this movement, the transmission member 31 drives the valve core 21 from the third position to the fourth position, thereby deflating the air suspension system. After deflation is complete, the control driver 32 retracts, and the valve core 21 returns to the third position under the elastic force of the elastic member 23.

[0098] In summary, according to the air filtering device 100 of the embodiment of the present invention, by setting the drive component 30, the pressure relief valve 20 can not only realize the automatic deflation process according to the air pressure activity in the filter chamber 11a, but also realize the controlled deflation process through the drive component 30. Moreover, it has a compact structure and high integration. Compared with the existing technology, the structural compactness and reliability of the air filtering device 100 are effectively improved.

[0099] The present invention also provides an air suspension system including the air filter device 100 described in any of the above embodiments. Since the air filter device 100 according to the present invention has the above technical effects, the air suspension system according to the present invention also has corresponding technical effects, which will not be described in detail in this embodiment.

[0100] The embodiment of the present invention further provides a vehicle including the air suspension system described in the above embodiment. Since the air filter device 100 according to the embodiment of the present invention has the above technical effects, the vehicle according to the embodiment of the present invention also has corresponding technical effects, which will not be described in detail in this embodiment.

[0101] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An air filtering device, characterized in that: include: A housing, wherein the housing is provided with a filter cavity, the housing is provided with a pressure relief port, and the pressure relief port is communicated with the filter cavity; A pressure relief valve, the pressure relief valve being provided at one end of the pressure relief port and having a matching portion; A drive assembly is provided in the housing, and the drive assembly includes a transmission part, and the transmission part is movable between a first position and a second position, wherein: When the transmission part is located at the first position, the pressure relief valve can be switched between an open state and a closed state according to the air pressure in the filter chamber. When the transmission part moves from the first position to the movable second position, the transmission part cooperates with the matching part, and the transmission part drives the pressure relief valve to switch from the closed state to the open state.

2. The air filtering device according to claim 1, characterized in that The drive assembly includes: a transmission member, the transmission member being formed as the transmission portion, the transmission member being movable between the first position and the second position along a first direction, A driving member is provided on the housing, the driving member is connected to the transmission member, and the driving member is used to drive the transmission member to move between the first position and the second position.

3. The air filtering device according to claim 2, characterized in that The pressure relief valve comprises: The valve core is provided with the matching portion, and the valve core is movably provided on the housing between a third position and a fourth position along the first direction, wherein: When the valve core is located at the third position, the pressure relief valve is in the closed state, and when the valve core is located at the fourth position, the pressure relief valve is in the open state.

4. The air filtering device according to claim 3, characterized in that The transmission member is movably disposed on the valve core along the first direction.

5. The air filtering device according to claim 3, characterized in that: The valve core is provided with a connecting groove extending along the first direction. In the first direction, the inner wall surface of the connecting groove at one end away from the pressure relief port forms the matching portion. The transmission member is movably provided in the connecting groove along the first direction.

6. The air filtering device according to claim 5, characterized in that The connecting groove is a through groove, the driving assembly includes two driving members, the first end of the transmission member is connected to one of the driving members, and the second end of the transmission member passes through the connecting groove and is connected to the other driving member.

7. The air filtering device according to claim 3, characterized in that A first installation channel is provided at one end of the pressure relief port away from the filter chamber, a pressure relief hole is provided on the side wall of the first installation channel, and the valve core is movably provided in the first installation channel between the third position and the fourth position. When the valve core is located at the third position, the pressure relief port is disconnected from the pressure relief hole. When the valve core is located at the fourth position, the pressure relief port is connected to the pressure relief hole.

8. The air filtering device according to claim 7, characterized in that: The valve core is provided with a piston portion at one end close to the pressure relief port. When the valve core is located at the third position, the piston portion is plugged into the pressure relief port. The pressure relief valve further comprises: A sealing member is sleeved on the valve core, and the sealing member is suitable for filling the gap between the circumferential wall surface of the valve core and the wall surface of the first installation channel.

9. The air filtering device according to claim 3, characterized in that: The housing comprises: A main housing, wherein the main housing is provided with the filter cavity, the first end of the main housing includes a first area and a second area, the first area is provided with an air outlet, the second area is provided with the pressure relief port, and the second end of the main housing is provided with an air inlet, the air outlet and the air inlet are respectively communicated with the filter cavity; A secondary shell, the secondary shell is arranged in the second area, the second area and the inner wall surface of the secondary shell define an installation cavity, the drive assembly and the pressure relief valve are both arranged in the installation cavity, the secondary shell is provided with an exhaust port, and the exhaust port is connected to the installation cavity.

10. The air filtering device according to claim 9, characterized in that: The inner wall surface of the installation cavity is provided with a protrusion, the protrusion is provided with a guide channel, and the end of the valve core away from the pressure relief port is movably provided in the guide channel along a first direction.

11. The air filtering device according to claim 10, characterized in that: The pressure relief valve further comprises: An elastic member is used to provide an elastic force to the valve core from the fourth position toward the third position, a first end of the elastic member abuts against the valve core, and a second end of the elastic member abuts against the protrusion.

12. The air filtering device according to any one of claims 1 to 11, characterized in that Also includes: A filter element, the filter element being disposed in the filter cavity, the filter element being suitable for filtering and drying gas, the outer peripheral surface of the filter element being in contact with the inner wall surface of the filter cavity, and the filter element being provided with a second mounting channel; A pressure relief pipe is provided in the second installation channel, a first end of the pressure relief pipe is provided at one end of the pressure relief port close to the filter cavity, and a second end of the pressure relief pipe is communicated with the filter cavity.

13. An air suspension system, characterized in that: An air filtering device comprising the air filtering device according to any one of claims 1 to 12.

14. A vehicle, characterized in that: Includes the air suspension system as claimed in claim 13.

Images