Supermicro-pressure self-operated pressure regulating valve

Abstract

The invention belongs to the technical field of a regulating valve, in particular to a supermicro-pressure self-operated pressure regulating valve. The supermicro-pressure self-operated pressure regulating valve comprises a valve body, a valve rod, an executing mechanism, a pressure guide pipe and a spring I, wherein the valve rod penetrates through a plate I above the valve body and is connectedwith the executing mechanism; an outer ring of the executing mechanism communicates with the valve body through the pressure guide pipe, and the executing mechanism is connected with the plate I through a rod I; the valve rod penetrates through a thin film in the executing mechanism and extends out from the upper end face of the executing mechanism, and the upper end of the valve rod penetrates through a supporting plate and is fixedly connected with a plate II; the supporting plate is fixedly connected on the plate I through a rod II, the plate II is arranged in an inner ring of the supporting plate, and the spring I is arranged above the plate II; a press plate is arranged at the upper end of the spring I, and a plate III is arranged at the upper end of the press plate and is connected on the rod II through a bolt; and a regulating bolt is arranged at the central position of the plate III. The spring I is arranged above the executing mechanism, so that the working pressure of the self-operated pressure regulating valve is conveniently regulated.

Description

technical field [0001] The invention belongs to the technical field of regulating valves, in particular to an ultra-micro-pressure self-operated pressure regulating valve. Background technique [0002] Self-operated pressure regulating valves are divided into three series of self-operated pressure, differential pressure and flow regulating valves. The self-operated pressure regulating valve is divided into two types: before the valve and after the valve according to the position of the pressure taking point. When the pressure taking point is in front of the valve, it is used to adjust the pressure before the valve to be constant; when the pressure taking point is behind the valve, it is used to adjust the pressure behind the valve to be constant. . When the pressure before the valve and after the valve is introduced into both sides of the air chamber of the actuator, the self-operated differential pressure regulating valve can adjust the pressure at both ends of the regulat...

AI Technical Summary

Problems solved by technology

[0006] In order to make up for the deficiencies of the prior art and to solve the problem that the adjustment angle of each rotation of the adjustment seat is limited when the first spring is located between the actuator and the valve body, the present invention proposes an ultra-micro-pressure self-operated pressure adjustment valve

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