A proportional pressure valve with an air supply switch

Abstract

The invention discloses a proportional pressure valve with an air supply switch, comprising a main valve body and a control module. The main valve body is provided with an electric control assembly, a push rod, an air inlet, a work outlet, an exhaust outlet and an air inlet cavity. , intermediate chamber and exhaust chamber, the main valve body is provided with a first valve port and a valve core; the working port is provided with a pressure feedback device; the valve core is provided with a communication cavity, and the valve core side wall is provided with a first communication hole; the main valve The body is provided with an exhaust seat; it also includes a first elastic piece and a second elastic piece; the main valve body is provided with an air intake module, the air intake module includes a cover body, an air passage and a switch valve, and the air passage includes a main air intake passage and branches aisle. The invention has the following advantages and effects: the process of air intake, pressure maintaining and exhausting can be realized, and the air pressure at the working port can be controlled in time through the pressure feedback device, so as to realize stable pressure maintaining for a long time, and can be controlled at any time through the pressure feedback. It is more convenient and has the effect of more compact structure, smaller volume, and convenient packaging and transportation.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a proportional pressure valve with an air supply switch. Background technique [0002] As a highly integrated mechatronic product, proportional pressure valve is the core of electrical proportional control technology and represents the development direction of fluid control technology. It is widely used in factory automation and vehicle control. [0003] The existing proportional pressure valve mainly includes an intake port, an exhaust port and a working port, and the working port is connected to the gas-using equipment. When the equipment needs to input different gases, the air inlet needs to be connected to multiple gas pipes, and each gas pipe is connected to different gases, and the on-off is realized through the control valve. The control valve and the gas pipe are separated from the proportional pressure valve. The total volume is large, the structure is loose, and it is i...

AI Technical Summary

Problems solved by technology

[0003] The existing proportional pressure valve mainly includes an air inlet, an exhaust port and a working port. The working port is connected to the gas-consuming equipment. When the equipment needs to input different gases, the air inlet needs to be connected with multiple gas delivery pipes, and each gas delivery pipe is connected to different gases, and the on-off is realized through the control valve respectively. The control valve and the gas delivery pipe are separated from the proportional pressure valve. The overall volume is large, the structure is loose, and it is not convenient for packaging and transportation

In addition, the existing proportional pressure valve is difficult to achieve long-term stable pressure maintenance and pressure regulation at any time

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