公开(公告)号：US4809736A

公开(公告)日：1989-03-07

申请号：US84440

申请日：1987-08-11

申请人： Tadashi Oike ,  Takeshi Yokoyama

发明人： Tadashi Oike ,  Takeshi Yokoyama

IPC分类号： G05D16/16 ,  F16K31/383 ,  G05D16/18 ,  F16K31/122

CPC分类号： F16K31/383 ,  G05D16/166 ,  Y10T137/7768

摘要： A piston structure of a pressure reducing valve in which a piston is formed on its side surface with an annular groove for receiving a piston ring therein and is slidably inserted into a cylinder together with the piston ring, and a main valve is operatively opened and closed by regulating the operating pressure of the piston through a pilot valve for operatively detecting a secondary pressure, the outer peripheral edge of an upper surface of the piston is formed in outer peripheral direction, to be lower than a circle on the upper surface that is axially aligned with the bottom surface of the annular groove or a circle located more inwardly thereof, to prevent the upper corner of the piston from collision with an inner wall of the cylinder, when the piston is inclined by fluid jetted from the main valve.

摘要翻译： 减压阀的活塞结构，其活塞在其侧面形成有用于在其中容纳活塞环的环形槽，并且与活塞环一起可滑动地插入到气缸中，并且主阀可操作地打开和关闭 通过通过用于操作性地检测二次压力的先导阀调节活塞的操作压力，活塞的上表面的外周边缘在外周方向上形成为低于在轴向上的上表面上的圆 与环形槽的底面或位于其内侧的圆对准，以防止当活塞被从主阀喷射的流体倾斜时活塞的上角与缸的内壁碰撞。