A two-way compressed air pressure regulating device

Abstract

This utility model is a two-way compressed air pressure regulating device. Its structure includes two normally open pilot valves, a normally closed high-speed switching valve, a miniature check valve, an air inlet, and a pressure output port symmetrically arranged on the valve body. An exhaust port is located at the bottom of the valve body. The pressure output port is sequentially connected to the first interface of the corresponding normally open pilot valve and the first interface of the corresponding normally closed high-speed switching valve via channels. The air inlet is connected to the second interface of the corresponding normally open pilot valve via a channel with a miniature check valve. The second interfaces of the two normally closed high-speed switching valves are respectively connected to the exhaust port via channels. It also includes two pressure sensors; the channels connecting the two pressure output ports to the first interfaces of the corresponding normally open pilot valves are each connected to a pressure sensor. The advantages of this utility model are: it can cooperate with a control system to automatically perform closed-loop control of the normally open pilot valve and the normally closed high-speed switching valve, outputting two channels of compressed air with the same or different pressures. The two channels of compressed air can flexibly achieve functions such as pressure boosting, pressure holding, pressure reduction, and rapid pressure reduction.

Description

Technical Field

[0001] This utility model relates to a compressed air pressure regulating device, specifically a two-way compressed air pressure regulating device. Background Technology

[0002] In automatic control systems, compressed air is often required, and its pressure needs to be adjusted to suit various application scenarios.

[0003] In the existing technology, compressed air pressure regulating devices can generally only regulate the pressure output of one compressed air stream, which has certain limitations. Utility Model Content

[0004] This utility model proposes a two-way compressed air pressure regulating device, which aims to overcome the above-mentioned shortcomings of the existing technology and realize the output of two compressed air with the same or different pressures.

[0005] The technical solution of this utility model is a two-way compressed air pressure regulating device. Its structure includes two sets of normally open pilot valves, two sets of normally closed high-speed switching valves, two sets of miniature check valves, two air inlets, and two pressure output ports symmetrically arranged on a valve body. An exhaust port is located at the bottom of the valve body. The pressure output port is sequentially connected to the first interface of the corresponding normally open pilot valve and the first interface of the corresponding normally closed high-speed switching valve via a channel. The air inlets are connected to the second interface of the corresponding normally open pilot valve via a channel with a miniature check valve. The second interfaces of the two normally closed high-speed switching valves are respectively connected to the exhaust port via channels. This allows for the output of two channels of compressed air with the same or different pressures, and the two channels of compressed air can perform functions such as pressure boosting, pressure holding, pressure reduction, and rapid pressure reduction.

[0006] Preferably, the system also includes two sets of pressure sensors, with each of the two pressure output ports connected to a pressure sensor via a channel that connects to the first interface of the corresponding normally open pilot valve. The placement of the pressure sensors enables automatic closed-loop control in conjunction with the control system.

[0007] The advantages of this utility model are: reasonable structural design, which can be used in conjunction with existing technical control systems to automatically close-loop control the normally open pilot valve and the normally closed high-speed switching valve, and output two compressed air channels with the same or different pressures. The two compressed air channels can flexibly realize functions such as pressure increase, pressure holding, pressure reduction, and rapid pressure reduction. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of the two-way compressed air pressure regulating device of this utility model.

[0009] Figure 2 This is a cross-sectional structural schematic diagram of the two-way compressed air pressure regulating device of this utility model.

[0010] In the diagram, 1 is the valve body, 2 is the normally open pilot valve, 3 is the normally closed high-speed switching valve, 4 is the miniature check valve, 5 is the pressure sensor, 6 is the air inlet, 7 is the pressure output port, and 8 is the exhaust port. Detailed Implementation

[0011] The present invention will be further described in detail below with reference to embodiments and specific implementation methods.

[0012] like Figure 1 , 2 As shown, a two-way compressed air pressure regulating device includes two sets of normally open pilot valves 2, two sets of normally closed high-speed switching valves 3, two sets of miniature check valves 4, two sets of pressure sensors 5, two air inlets 6, and two pressure output ports 7 symmetrically arranged on a valve body 1. An exhaust port 8 is provided at the bottom of the valve body 1. The pressure output port 7 is sequentially connected to the first interface of the corresponding normally open pilot valve 2 and the first interface of the corresponding normally closed high-speed switching valve 3 via channels. The air inlets 6 are connected to the second interface of the corresponding normally open pilot valve 2 via channels with miniature check valves 4. The second interfaces of the two normally closed high-speed switching valves 3 are respectively connected to the exhaust port 8 via channels. The channels connecting the two pressure output ports 7 to the first interfaces of the corresponding normally open pilot valves 2 are respectively connected to a pressure sensor 5.

[0013] Based on the above structure, the normally open pilot valve 2 and the normally closed high-speed switching valve 3 can be automatically closed-loop controlled to output two compressed air channels with the same or different pressures. The two compressed air channels can flexibly realize functions such as pressure boosting, pressure holding, pressure reduction, and rapid pressure reduction.

[0014] Both the normally open pilot valve 2 and the normally closed high-speed switching valve 3 are existing technologies, corresponding to the following respectively:

[0015] The CN211259822U pneumatic normally open pilot valve and the CN211259816U pneumatic normally closed high-speed switching valve 2019221642406 can achieve rapid response.

[0016] The miniature one-way valve 4 is existing technology. It adopts the one-way valve structure in the railway train anti-slip exhaust valve with one-way valve in CN105805381B, which can realize rapid exhaust (pressure reduction).

[0017] The use of pressure sensor 5 enables high-precision pressure regulation in closed-loop control.

[0018] The two sets of compressed air channels are integrated into one valve body 1, with a compact and reasonable flow path, making it easy to use.

[0019] In specific work,

[0020] 1) Pressure boosting: The control system inputs a pulse electrical signal to the normally open pilot valve 2, causing airflow to enter the normally open pilot valve 2 from the air inlet 6 and be output to the working system through the pressure output port 7, thereby boosting the pressure of the working system. The boost pressure can be determined by the control system. When the set pressure is reached, the system enters the pressure holding state. The pressure sensor 5 acts as a feedback loop for closed-loop control to monitor the output pressure. The control system controls the normally open pilot valve 2 to intake air or the normally closed high-speed switching valve 3 to exhaust air, thereby achieving constant pressure.

[0021] 2) Pressure reduction: The control system inputs a pulse electrical signal to the normally closed high-speed switching valve 3, causing the airflow to enter the pressure output port 7 from the working system, and then exit from the exhaust port 8 through the normally closed high-speed switching valve 3, thereby reducing the pressure of the working system. The amount of pressure reduction is determined by the control system. When the set pressure is reached, the system enters the pressure holding state. Similarly, the pressure sensor 5 is used as the feedback loop of the closed-loop control to monitor the output pressure. The control system controls the normally closed high-speed switching valve 3 to exhaust or the normally open pilot valve 2 to intake air, thereby achieving constant pressure.

[0022] 3) Pressure holding: Both the pressure increase and decrease processes include a pressure holding process. The pressure sensor 5 is used as a feedback loop in the closed-loop control to monitor the output pressure. The control system controls the normally closed high-speed switching valve 3 to exhaust or the normally open pilot valve 2 to intake air, so as to achieve constant pressure and achieve the pressure holding effect.

[0023] 4) Rapid exhaust: Close the air source of the air inlet 6, and at the same time open the air inlet 6 to the atmosphere. At this time, the compressed air in the working system is directly discharged into the atmosphere through the miniature one-way valve 4 and the air inlet 6 to achieve the purpose of rapid exhaust.

[0024] The control system and control process described above can be implemented by existing technology and are not within the scope of protection of this utility model.

[0025] All of the components described above are existing technologies, and those skilled in the art can use any model and existing design that can achieve their corresponding functions.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A two-channel compressed air pressure regulating device, characterized in that, It includes two normally open pilot valves (2), two normally closed high-speed switching valves (3), two miniature check valves (4), two air inlets (6) and two pressure output ports (7) symmetrically arranged on the valve body (1). The bottom of the valve body (1) is provided with an exhaust port (8). The pressure output port (7) is connected to the first interface of the corresponding normally open pilot valve (2) and the first interface of the corresponding normally closed high-speed switching valve (3) in sequence through a channel. The air inlet (6) is connected to the second interface of the corresponding normally open pilot valve (2) through a channel with a miniature check valve (4). The second interfaces of the two normally closed high-speed switching valves (3) are respectively connected to the exhaust port (8) through a channel.

2. The dual-channel compressed air pressure regulating device as described in claim 1, characterized in that, It also includes two sets of pressure sensors (5), and the channels connecting the two pressure output ports (7) to the first interface of the corresponding normally open pilot valve (2) are respectively connected to a pressure sensor (5).

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