Multi-interface air filtration regulator and control method thereof

Abstract

The invention belongs to the technical field of air filtration regulators, and discloses a multi-interface air filtration regulator and a control method thereof.The multi-interface air filtration regulator comprises an air filtration shell, the lower end of the air filtration shell is fixedly connected with a bottom cover, the upper end of the air filtration shell is fixedly connected with a top cover, a groove is formed in the side wall of the air filtration shell, and an air path control unit is arranged in the groove; a valve element and a valve seat are arranged in the air filter shell in the vertical direction, a piston and a piston ejector rod are arranged in the bottom cover, the piston ejector rod penetrates through one end of the valve seat to abut against the valve element, and the other end of the piston ejector rod is fixedly connected with the piston. The air path control unit is in butt joint with an air path in the air filter shell, the air path transmission path is shortened, and the response speed is increased. The two reserved ports are respectively connected with the independent G area and H area, so that the stability of a gas source is ensured, and compared with a single output port, the gas source can be provided for two different gas using components at the same time, and the gas using requirements of different devices are met.

Description

Technical Field

[0001] This invention belongs to the field of air filter regulator technology, and relates to a multi-interface air filter regulator and its control method. Background Technology

[0002] In various vehicles and equipment such as heavy-duty trucks, medium and light trucks, mining trucks, and agricultural machinery, a dual intermediate shaft mechanical transmission with a main and auxiliary gearbox structure is adopted. The auxiliary gearbox structure is used for high and low gear switching to adapt to the driving and operation needs under different working conditions.

[0003] The existing mechanical gearbox shifting process is as follows: the air source first flows through an air filter to remove impurities. The filtered air is then delivered to the air circuit control valve through a shaped air tube. The air circuit control valve controls the air circuit opening and closing of the shifting actuator. The air, after being regulated by the air circuit control valve, is then separated into high and low gear air circuits by a high and low gear control valve, and finally delivered to the high and low gear cylinders in the auxiliary gearbox. The extension and retraction of the cylinders completes the gear shift. However, the gear shifting process involves many intermediate steps, a long air circuit transmission path with complex nodes, and unstable air circuit operation. In addition, each additional component incurs additional costs and losses. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a multi-interface air filter regulator and its control method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a multi-port air filter regulator, including an air filter housing. A bottom cover is fixedly connected to the lower end of the air filter housing, and a top cover is fixedly connected to the upper end. A groove is provided on the side wall of the air filter housing, and an air circuit control unit is provided in the groove. A valve core is provided vertically inside the air filter housing. A piston and a piston rod are provided inside the bottom cover. One end of the piston rod passes through the valve seat and abuts against the valve core, and the other end is fixedly connected to the piston.

[0006] Furthermore, the air circuit control unit includes a push rod spring, a push rod cap, and a push rod. The push rod spring and the push rod are disposed in a groove. One end of the push rod spring abuts against the air filter housing, and the other end abuts against the push rod. The push rod cap is sleeved on the outer surface of the push rod and is detachably connected to the air filter housing.

[0007] Furthermore, a valve core spring and a buckle are sequentially provided at the end of the valve core away from the piston rod. One end of the valve core spring is fixedly installed in the buckle, and the other end is sleeved on the outer surface of the upper end of the valve core. A filter screen and a filter screen retainer are provided at the upper end of the buckle. The filter screen retainer is located on the outer surface of the filter screen and is fixedly connected to the air filter housing.

[0008] Furthermore, a piston spring is fitted at the lower end of the piston, with one end of the piston spring abutting against the piston and the other end abutting against the boss of the bottom cover; an overflow hole is provided on the bottom wall of the bottom cover; and fixedly connected ribs are provided on the side wall of the bottom cover.

[0009] Furthermore, the air circuit control unit has two reserved ports on one side and an output port on the other side, and both the reserved ports and the output port are fixedly connected to the air filter housing; the top cover has an input port.

[0010] Furthermore, a connecting shell is provided on the outside of the valve core. The connecting shell is fixedly connected to the air filter housing through a connector. The connecting shells are arranged in a clockwise direction as a first connecting shell, a second connecting shell, a third connecting shell, and a fourth connecting shell. The first connecting shell is located on the right side of the air circuit control unit. The second, third, and fourth connecting shells are provided with through holes.

[0011] Furthermore, a top cover sealing ring and a top cover sealing gasket are sequentially provided at the lower end of the top cover, an air filter housing sealing ring is provided on the inner surface of the top cover, a piston sealing ring is provided on the outer surface of the piston, and a push rod sealing ring is provided on the outer surface of the push rod.

[0012] Furthermore, the outer surface of the boss of the bottom cover is provided with sponge.

[0013] The present invention also provides a control method for a multi-port air filter regulator. Based on the above-mentioned multi-port air filter regulator, the method includes the following steps: gas passes through the top cover and enters the air filter housing. The air path of the air filter housing is controlled by the air path control unit. When the gas pressure in the air filter housing is greater than the set value, the gas will drive the piston to move downward, the valve core separates from the piston rod, and the gas flows outward through the bottom end of the bottom cover.

[0014] Furthermore, a connecting shell is provided on the outside of the valve core. The connecting shells are arranged in a clockwise direction as a first connecting shell, a second connecting shell, a third connecting shell, and a fourth connecting shell. The first connecting shell and the fourth connecting shell are connected through an air circuit control unit for the flow of gas during gearbox shifting. The air circuit control unit has two reserved ports on one side and an output port on the other side. The output port is used to connect to the high and low gear switching valve body.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: This invention discloses a multi-interface air filter regulator that integrates the air circuit control unit with the air filter housing. By utilizing the spatial structure of the air filter housing, the air circuit control unit can be connected to the air circuit inside the air filter housing, shortening the air circuit transmission path and improving the response speed. A piston and piston rod are installed inside the bottom cover, and the piston and valve core are directly driven, reducing the loss in the power transmission process.

[0016] The gas circuit control unit has two reserved ports on one side and an output port on the other side. The output port is used to connect to the high and low gear switching valve body. The two reserved ports are connected to the G zone and the H zone respectively. The G zone and the H zone are two independent chambers, which ensures the stability of the gas source. Compared with a single output port, it can provide gas source to two different gas-consuming components at the same time, meeting the gas consumption needs of different equipment.

[0017] An overflow hole is provided on the bottom wall of the bottom cover, and the overflow hole is located at the highest point of the spherical bottom cover. In the case of rain or equipment cleaning, water droplets will flow naturally along the side wall of the bottom cover to the bottom and fall off. If water mist or dust enters the bottom cover through the overflow hole, the sponge inside the bottom cover will absorb it, and it can be reused by simply replacing the sponge.

[0018] The outer surface of the air filter housing is also provided with positioning holes. The three positioning holes are set at different angles. The multi-port air filter adjuster is fixedly installed on the upper surface of the gearbox using screws to limit the movement of the piston rod in the horizontal direction.

[0019] The assembly structure has one end of the piston spring abutting against the bottom cover and the other end sleeved on the outer surface of the lower end of the piston. The output air pressure is determined by calculating the downward compression displacement of the piston spring. When different output air pressure values ​​need to be changed in production operations, only the piston spring with the corresponding spring stiffness coefficient needs to be replaced, which simplifies the operation steps of air pressure adjustment and reduces the process flow.

[0020] The outer surface of the protrusion on the bottom cover is covered with a sponge. The sponge absorbs water vapor, dust and other impurities generated during the valve body and exhaust process, preventing air passage blockage and extending service life. On the other hand, it absorbs the noise generated during exhaust, reducing noise pollution.

[0021] This invention discloses a control method for a multi-port air filter regulator. After gas enters the air filter housing through the top cover, the air circuit control unit precisely controls the opening and closing of the air circuit inside the air filter housing. When the gas pressure inside the air filter housing is greater than the set value, the gas drives the piston to move down, separating the valve core from the piston rod. The gas flows outward through the bottom end of the bottom cover. The piston moves upward under the elastic restoring force of the piston spring and fits against the valve core. The air pressure value in each chamber is restored to the set value, and automatic pressure regulation is performed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a multi-port air filter regulator according to the present invention; Figure 2 This is a cross-sectional view from a first perspective in an embodiment of the present invention; Figure 3 This is a cross-sectional view from a second perspective in an embodiment of the present invention; Figure 4This is a schematic diagram of the internal structure of the air filter housing in an embodiment of the present invention; Figure 5 This is a top view of a multi-port air filter regulator according to the present invention.

[0023] Figure label: 1-Top cover; 2-Filter screen retainer; 3-Filter screen; 4-Inlet; 5-Air filter housing sealing ring; 7-Top cover sealing ring; 8-Top cover sealing gasket; 9-Valve core spring; 10-Valve seat; 11-Piston sealing ring; 12-Piston spring; 13-Piston; 14-Piston rod; 15-Valve core; 16-Snap-fit; 17-Bottom cover; 18-Sponge; 19-Overflow hole; 20-Rod spring; 21-Rod cap; 22-Rod; 23-Rod sealing ring; 24-Air circuit control unit; 25-Outlet; 26-Reserved opening; 27-Rib; 28-Air filter housing; 29-Groove. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0025] Example 1 The present invention discloses a multi-port air filter regulator, comprising: an air filter housing 28, a bottom cover 17 fixedly connected to the lower end of the air filter housing 28, a top cover 1 fixedly connected to the upper end of the air filter housing 28, a groove 29 provided on the side wall of the air filter housing 28, an air circuit control unit 24 provided in the groove 29, a valve core 15 provided in the air filter housing 28 in a vertical direction, and a piston 13 and a piston rod 14 provided in the bottom cover 17. The piston rod 14 passes through a valve seat 10 and abuts against the valve core 15 at one end, and is fixedly connected to the piston 13 at the other end.

[0026] The top cover 1, air filter housing 28, and bottom cover 17 are arranged sequentially from top to bottom. The top cover 1 is connected to the air filter housing 28 by threads, and the air filter housing 28 is connected to the bottom cover 17 by threads. Figure 2 As shown, a top cover sealing ring 7 and a top cover sealing gasket 8 are provided between the lower end of the top cover 1 and the air filter housing 28, which fit together at the connection to form a double seal, preventing gas from leaking out of the gap. An air filter housing sealing ring 5 is provided between the inner side wall of the top cover 1 and the air filter housing 28 to prevent gas leakage due to poor sealing.

[0027] A valve core 15 is vertically arranged inside the air filter housing 28. The valve core 15 is convex, and a valve core spring 9 is fitted on the upper outer surface. The other end of the valve core spring 9 is installed in a buckle 16. The inner side wall of the buckle 16 is provided with a limiting groove for installing the air filter housing 28. The buckle 16 is installed by rotation to prevent separation from the air filter housing 28 and to prevent inaccurate positioning after assembly. The buckle 16 has a porous structure. When gas passes through the area where the buckle 16 is located, it passes through the holes on the buckle 16 to ensure unobstructed gas flow and prevent the buckle 16 from obstructing gas flow. A valve seat 10 is provided at the lower end of the valve core 15 and is fixedly installed inside the air filter housing 28. The piston rod 14 passes through the valve seat 10, with one end abutting against the valve core 15 and the other end fixedly connected to the piston 13.

[0028] A connecting shell is provided on the outer surface of the valve core 15. The connecting shell is fixedly connected to the air filter housing 28 through a connector. The connecting shells are arranged in a clockwise direction as a first connecting shell, a second connecting shell, a third connecting shell, and a fourth connecting shell. The first connecting shell is located on the right side of the air circuit control unit 24. Figure 5 As shown, the cavity between the first connecting shell and the air filter housing 28 is region F, the cavity between the second connecting shell and the air filter housing 28 is region G, the cavity between the third connecting shell and the air filter housing 28 is region H, and the cavity between the fourth connecting shell and the air filter housing 28 is region E. Through holes are provided on the second, third, and fourth connecting shells. Integrating the air circuit control unit 24 with the air filter housing 28 shortens the gas transmission path, making gear shifting more efficient.

[0029] The four chambers are independent gas containment and flow spaces, used for the diversion and transmission of different gas paths, providing a basis for multi-port output. At the same time, the through holes on the second, third, and fourth connecting shells are used for gas diversion, and zone F is connected to zone E through the gas path control unit 24.

[0030] The upper end of the buckle 16 is provided with a filter screen 3 and a filter screen retainer 2. The filter screen retainer 2 is located on the outer surface of the filter screen 3 and is fixedly connected to the air filter housing 28. The filter screen retainer 2 uses elastic force to tightly press the filter screen 3 onto the upper end of the buckle 16, so as to prevent the filter screen 3 from loosening or shifting during gas flow. An inlet 4 is provided at the upper end of the top cover 1. The air enters the multi-port air filter regulator through the inlet 4 at the upper end of the top cover 1. First, it passes through the filter screen 3, which intercepts impurities, dust and other particulate matter in the air. The filtered air enters area A, which is the cavity between the filter screen 3 and the buckle 16. Then, it enters area B through the porous structure on the buckle 16, which is the cavity between the buckle 16 and the valve core 15. After that, it flows downward and enters area C through the valve seat 10. Area C is the cavity between the valve core 15, the piston 13 and the inner connecting shell of the air filter housing 28. The air entering area C then passes through the through holes on the second connecting shell, the third connecting shell and the fourth connecting shell, and enters areas G, H and E respectively. Among them, the air that passes through the through hole of the second connecting shell enters area G, the air that passes through the through hole of the third connecting shell enters area H, and the air that passes through the through hole of the fourth connecting shell enters area E.

[0031] like Figure 1 He Ru Figure 3 As shown, a groove 29 is provided on the side wall of the air filter housing 28. An air path control unit 24 is provided in the groove 29. The air path control unit 24 includes a push rod spring 20, a push rod cap 21, and a push rod 22. The push rod spring 20 and the push rod 22 are disposed in the groove 29. One end of the push rod spring 20 abuts against the air filter housing 28, and the other end abuts against the push rod 22. The push rod cap 21 is sleeved on the outer surface of the push rod 22 and threadedly connected to the air filter housing 28. It not only fixes the push rod 22 and the push rod spring 20, but also seals the opening of the groove 29 to prevent gas from leaking from the opening of the groove 29, and at the same time prevents external impurities from entering the interior of the groove 29.

[0032] The push rod 22 is cross-shaped. The push rod cap 21 is installed inside the air filter housing 28. Under the action of external force, the push rod 22 can move left and right inside the groove 29 to avoid jamming. A ring of holes is provided on the side of the push rod 22 for gas flow between zones E and F. Gas flows freely between zones E and F through the holes on the side of the push rod 22 for gas exchange. When the push rod 22 is compressed by external force, the holes separate zones E and F, and the side wall of the push rod 22 blocks the flow channel between zones E and F, and the gas in the two zones no longer flows, thus meeting the gas path control requirements under different working scenarios.

[0033] The gas circuit control unit 24 has a reserved port 26 on one side and an output port 25 on the other side, such as... Figure 1As shown, the output port 25 is located on the right side of the gas circuit control unit 24, arranged clockwise, and is used to connect to the high / low gear switching valve body. The output port 25 is also connected to zone F. The reserved port 26 is located on the left side of the gas circuit control unit 24, arranged counterclockwise. Specifically, there are two reserved ports 26 located on both sides of the axis of the gas circuit control unit 24, connected to zones H and G respectively. Zones G and H are two independent cavities, ensuring the stability of the gas source. Compared to a single output port, it can simultaneously provide gas to two different gas-consuming components, meeting the gas needs of different devices. Furthermore, the reserved port 26 is compatible with external gas pipelines, facilitating connection to external gas-consuming components.

[0034] The outer surface of the air filter housing 28 is also provided with positioning holes. There are three positioning holes, one of which is located between the reserved port 26 and the output port 25. The three positioning holes are distributed at different angles. The multi-port air filter adjuster is fixedly installed on the upper surface of the gearbox using screws. In addition, the screws exert a clamping force on the top cover 1. The top cover 1 cannot move up or down due to the limitation of the screws, which enhances the stability and sealing performance of the connection between the top cover 1 and the air filter housing 28 and avoids gas leakage caused by loosening or displacement of the top cover 1.

[0035] A piston 13 is housed inside the bottom cover 17. A piston spring 12 is fitted onto the lower end of the piston 13. One end of the piston spring 12 abuts against the piston 13, and the other end abuts against a protrusion on the bottom cover 17. The piston 13 moves freely vertically inside the bottom cover 17. The D-section at the lower end of the piston 13 is connected to the external atmosphere, allowing excess gas in the upper region of the piston 13 to be discharged, preventing negative pressure from being generated when the piston 13 moves upward. The protrusion inside the bottom cover 17 is used to fix the lower end of the piston spring 12. When the piston 13 moves downward under the action of gas pressure, it compresses the piston spring 12, which generates a counter-elastic force. When the gas pressure disappears or decreases, the piston spring 12 pushes the piston 13 back upward.

[0036] The output air pressure can be determined by calculating the spring force of piston spring 12. Piston spring 12 with different K values ​​can be replaced according to the air pressure value. The piston spring 12 bears the air pressure above and relies on the spring force below, and the two are balanced with each other.

[0037] The spring force is:

[0038] in This is the displacement caused by the downward compression of piston spring 12. This is the spring stiffness coefficient.

[0039] By simply changing the spring stiffness coefficient K, a unique corresponding spring force value can be determined, thereby determining the output air pressure. This eliminates the need for repeated adjustments to valves, knobs, and other operations to calibrate the air pressure, simplifying the process.

[0040] A sponge 18 is provided on the outer side of the protrusion of the bottom cover 17. The sponge 18 can absorb moisture and dust while also absorbing noise generated during exhaust. An overflow hole 19 is provided on the bottom wall of the bottom cover 17 for overflow pressure relief. The overflow hole 19 can quickly discharge excess gas when the pressure is too high, and there will be no gas leakage under normal operating pressure. Ribs 27 are provided on the outer wall of the bottom cover 17 for fixed connection, which can enhance the structural strength and rigidity of the bottom cover 17 and prevent deformation and damage during long-term use. In addition, the ribs 27 can also improve the convenience of assembly operation between the bottom cover 17 and the air filter housing 28 and reduce the assembly difficulty.

[0041] Example 2 The present invention discloses a control method for a multi-port air filter regulator, comprising the following steps: gas passes through the top cover 1 and enters the air filter housing 28, and the air passage of the air filter housing 28 is controlled by the air passage control unit 24; when the gas pressure in the air filter housing 28 is greater than a set value, the gas drives the piston 13 to move downward, the valve core 15 separates from the piston rod 14, and the gas flows outward through the bottom end of the bottom cover 17.

[0042] Gas enters through inlet 4, undergoes preliminary filtration through filter screen 3, and then enters zone A. The filtered gas passes through the small hole at the top of buckle 16 into zone B, and then through the channel in the middle of valve seat 10 into zone C. Gas entering zone C is split through the second connecting shell, the third connecting shell, and the fourth connecting shell, and enters zones E, G, and H respectively. Zones G and H are gas flow channels for reserved port 26, which are always closed when there is no external load. Only gas entering zone E passes through groove 29 and then flows through the hole on the side of push rod 22 into zone F. The output port 25 of zone F is connected to the high / low gear switching valve body. When driving normally in high or low gear, push rod 22 is compressed, and zone F is closed. The entire gas path is in a closed state. The input gas continuously accumulates in the chambers of each zone. The gas pressure acts on the upper part of piston 13 and pushes piston 13 to move downward. Piston 13 compresses piston spring 12 downward in sync. When piston 13 moves downward to the preset value, valve seat 10 and valve core 15 are in contact. The chambers of zone A and zone B are isolated from the other chambers. Piston spring 12 stops being compressed. When the gas pressure value in each chamber stabilizes to the set value, the gas pressure at the output port 25 is the target gas pressure value after pressure adjustment. If the gas pressure in zones C, E, F, G, and H exceeds the set value, the gas pressure continues to act on the upper part of piston 13, pushing piston spring 12 to continue moving downward. At the same time, it causes piston rod 14 to separate from valve core 15. Excess gas enters zone D through piston rod 14 and is discharged to the outside through overflow hole 19. During the discharge of excess gas, the amount of gas in zone C gradually decreases, the pressure decreases, and piston 13 moves upward under the elastic restoring force of piston spring 12. Piston rod 14 and valve core 15 are in contact, and the gas pressure in each chamber returns to the set value, thus performing automatic pressure regulation.

[0043] When switching from a high gear to a low gear, the driver first moves the paddle on the cab control handle to pre-select a low gear. After receiving the signal, the high / low gear switching valve body switches from a high gear state to a low gear state. The driver then shifts the cab control handle from the current 7th gear to N (neutral). During the shifting process, the push rod 22 returns to its free state, connecting the passage between compartment E and compartment F, and starting to supply air to compartment F. After the air supply, the gas in the output port 25 channel, the gas in the low gear channel, and the gas on the low gear side of the auxiliary gearbox shift cylinder maintain a pressure-holding state, and is in the low gear position. At this time, the auxiliary gearbox completes the low gear preparation. Finally, the driver shifts the cab control handle from N to 6th gear. During the shifting process, the push rod 22 is driven from a free state to a compressed state, and the passage between compartment E and compartment F is cut off again. The low gear side of the auxiliary gearbox shift cylinder continues to maintain a pressure-holding state. During the switching process, the gas flows through zone E and zone F, and enters the corresponding low-gear air chamber area through output port 25, thereby completing the operation of switching from high gear to low gear. This ensures that the high-gear or low-gear side of the auxiliary gearbox shift cylinder is kept under pressure to prevent the main gearbox from shifting before the auxiliary gearbox is properly engaged, which could lead to asynchrony between the main and auxiliary gearboxes and gear breakage in the synchronizer. It should be noted that only one side of the high / low-gear side air chamber area of ​​the auxiliary gearbox shift cylinder is allowed to have air for locking the gear.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

Claims

1. A multi-port air filter regulator, characterized in that: The air filter housing (28) is provided with a bottom cover (17) fixedly connected to the lower end and a top cover (1) fixedly connected to the upper end. A groove (29) is provided on the side wall of the air filter housing (28). An air circuit control unit (24) is provided in the groove (29). A valve core (15) and a valve seat (10) are provided in the air filter housing (28) along the vertical direction. A piston (13) and a piston rod (14) are provided in the bottom cover (17). The piston rod (14) passes through the valve seat (10) and abuts against the valve core (15) at one end, and is fixedly connected to the piston (13) at the other end.

2. The multi-port air filter regulator according to claim 1, characterized in that: The air circuit control unit (24) includes a push rod spring (20), a push rod cap (21), and a push rod (22). The push rod spring (20) and the push rod (22) are disposed in a groove (29). One end of the push rod spring (20) abuts against the air filter housing (28), and the other end abuts against the push rod (22). The push rod cap (21) is sleeved on the outer surface of the push rod (22) and is detachably connected to the air filter housing (28).

3. The multi-port air filter regulator according to claim 1, characterized in that: The valve core (15) is provided with a valve core spring (9) and a buckle (16) at the end away from the piston rod (14). One end of the valve core spring (9) is fixedly installed in the buckle (16), and the other end is sleeved on the outer surface of the upper end of the valve core (15). The upper end of the buckle (16) is provided with a filter screen (3) and a filter screen retainer (2). The filter screen retainer (2) is provided on the outer surface of the filter screen (3) and is fixedly connected to the air filter housing (28).

4. The multi-port air filter regulator according to claim 1, characterized in that: A piston spring (12) is fitted at the lower end of the piston (13). One end of the piston spring (12) abuts against the piston (13), and the other end abuts against the boss of the bottom cover (17). An overflow hole (19) is provided on the bottom wall of the bottom cover (17). The bottom cover (17) has fixedly connected ribs (27) on its side wall.

5. The multi-port air filter regulator according to claim 1, characterized in that: The air circuit control unit (24) has two reserved ports (26) on one side and an output port (25) on the other side. Both the reserved ports (26) and the output port (25) are fixedly connected to the air filter housing (28). An input port (4) is provided on the top cover (1).

6. The multi-port air filter regulator according to claim 1, characterized in that: A connecting shell is provided on the outside of the valve core (15). The connecting shell is fixedly connected to the air filter housing (28) through a connector. The connecting shells are arranged in a clockwise direction as a first connecting shell, a second connecting shell, a third connecting shell and a fourth connecting shell. The first connecting shell is located on the right side of the air circuit control unit (24). The second, third and fourth connecting shells are provided with through holes.

7. The multi-port air filter regulator according to claim 2, characterized in that: The lower end of the top cover (1) is provided with a top cover sealing ring (7) and a top cover sealing gasket (8) in sequence. The inner surface of the top cover (1) is provided with an air filter housing sealing ring (5). The outer surface of the piston (13) is provided with a piston sealing ring (11). The outer surface of the push rod (22) is provided with a push rod sealing ring (23).

8. The multi-port air filter regulator according to claim 4, characterized in that: The outer surface of the boss of the bottom cover (17) is provided with a sponge (18).

9. A control method for a multi-port air filter regulator, characterized in that, The multi-port air filter regulator according to any one of claims 1-8 includes the following steps: Gas passes through the top cover (1) and enters the air filter housing (28). The air passage control unit (24) controls the opening and closing of the air passage of the air filter housing (28). When the gas pressure inside the air filter housing (28) is greater than the set value, the gas will drive the piston (13) to move downward, the valve core (15) will separate from the piston rod (14), and the gas will flow out through the bottom end of the bottom cover (17).

10. The control method for the multi-interface air filter regulator according to claim 9, characterized in that: A connecting shell is provided on the outside of the valve core (15). The connecting shells are arranged in a clockwise direction as a first connecting shell, a second connecting shell, a third connecting shell and a fourth connecting shell. The first connecting shell and the fourth connecting shell are connected through the air circuit control unit (24) for the transmission shift gas flow. The air circuit control unit (24) has two reserved ports (26) on one side and an output port (25) on the other side. The output port (25) is used to connect to the high and low gear switching valve body.

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