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91. 发明专利

JPH09210221A VARIABLE CONSTANT FLOW VALVE DEVICE 失效
公开(公告)号：JPH09210221A
公开(公告)日：1997-08-12
申请号：JP1492896
申请日：1996-01-31
申请人： YOKOTA HIROSHI
发明人： YOKOTA HIROSHI , YOKOTA SHINGO
IPC分类号： F16K1/34 , F16K1/54 , G05D7/06
摘要： PROBLEM TO BE SOLVED: To provide a convenient variable constant flow valve device made easily applicable for even a place of low differential pressure, with stable flow control performance and with very small power only required for driving an automatic valve, also provided with a trouble preventing function for clogging by self cleaning action of the automatic valve. SOLUTION: This constitution is formed into a structure such that, a flow regulating valve 3 setting a flow amount value and an automatic valve 7 performing automatic throttle adjusting action are arranged in series in the flow path direction by interposing an intermediate flow path (b), the automatic valve 7 is turnably pivotally supported on an automatic valve case 5 through an automatic valve shaft 8 fixedly extended in a position uniformly sorting a surface pressure received from a passing fluid, a clearance flow path is formed between an automatic valve valve seat 6 fixed in the automatic valve case 5 and the automatic valve, and the automatic valve 7 is driven by an automatic valve drive part 11 operated with, a difference of pressure between a pressure of a flow path (a) in an external pipe side of the flow adjusting valve 3 and a pressure of the intermediate flow path (b), serving as motive power source, the clearance flow path between the automatic valve and the automatic valve seat 6 is automatically throttle-adjusted.

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