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1. 发明专利

JPH04266667A SAFETY VALVE FOR FLUID SYSTEM 失效
公开(公告)号：JPH04266667A
公开(公告)日：1992-09-22
申请号：JP33571491
申请日：1991-11-25
申请人： ROSS OPERATING VALVE CO
发明人： NEIRU YUUJIIN RATSUSERU , OUEN HARORUDO RIBII
IPC分类号： F16K17/02 , F15B11/068
摘要： PURPOSE: To enhance profitability, such as decrease in number of component members of a safety valve for a fluid system actuating a reciprocating fluid motor or the like, by avoiding the response delay of an apparatus to be actuated. CONSTITUTION: A piston 56 reciprocating within a piston chamber 60 provided in a housing 42 actuates a poppet valve member 50 opening and closing the space between a feed port 44 and an outlet port 46, and an exhaust piston 80 reciprocating within an exhaust closure cavity 84 actuates an exhaust valve member 86 opening and closing the space between the outlet port 46 and an exhaust port 49. A first passage means communicating the supply port 44 to the piston chamber 60 is provided with throttle means 66, 67, and a second passage means communicating the piston chamber 60 to the outlet port 46 is provided with a one-way check valve 77. A pilot actuating member 90 is provided for selectively supplying or blocking line pressure from the supply port 44 to the common part of a third passage means communicating the supply port 44 to the exhaust closure cavity 84 and the first passage means.

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