Patent ID: 8726933
Filing Date: 2014-05-20
Classification: A61M,F16K,Y10T

Abstract:
1. A pressure control valve, comprising: a cylindrical valve body, having a bottom wall and a side wall, wherein the bottom wall is provided with an air inlet communicating with a device whose pressure is to be limited, the inner side wall comprises at least one guiding pin, and the cylindrical valve body is provided with air outlets communicating to an exhausting system, a valve core, provided within the cylindrical valve body and in air-tight cooperation with the air inlet, a traveling guiding bar, having a lower end connected to the valve core, a covering, fitted rotatably or up-and-down movably over the cylindrical valve body, for driving the traveling guiding bar to rotate or move up-and-down, a spiral guiding member, fitted up-and-down movably over the traveling guiding bar and provided on its outer surface with spiral grooves into which the at least one guiding pin can be inserted, and a pressure spring, having one end pressed against the valve core and the other end standing against the spiral guiding member.