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1. 发明专利

JPH1163268A AERATOR VALVE ASSEMBLY FOR PNEUMATIC DEVICE 失效
公开(公告)号：JPH1163268A
公开(公告)日：1999-03-05
申请号：JP14771498
申请日：1998-05-28
申请人： MARTIN ENG CO
发明人： BURKHART JAMES R , HURDIS JASON R
IPC分类号： F16K21/00 , B65D88/70 , F16K24/00
摘要： PROBLEM TO BE SOLVED: To provide an aerator valve assembly which can prevent a bulk material from being blocked by storing pressure gas in a pressure tank, and discharging the gas instantaneously to the volume of the bulk material or the like. SOLUTION: This valve assembly 10 which communicates selectively between a gas supply source 92 and a pressure vessel 36, or between the pressure vessel and a bulk material processing structure 144 is formed with a valve element 12, a piston sheet 100 involving an exhaust port which fluid-communicates an end cap 58 connected to the gas supply source 92 with the bulk material processing structure, and a port 81 fluid-communicating with the pressure vessel 36. A piston 150 is disposed in the chamber 32 of the valve element, and the piston is formed so as to slide freely selectively between an extension position where the exhaust port is sealed by forming metal-to-metal sealing against the piston sheet, and a retreat position where the seal is broken. A plurality of fluid passages 158 are formed for communicating between the gas supply source and the port 21 of the valve element at a diaphragm 152 which engages with the piston sheet.

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