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2. 发明授权

US3902518A Anti-syphon toilet reservoir valve 失效
标题翻译：防虹吸马桶水箱阀
公开(公告)号：US3902518A
公开(公告)日：1975-09-02
申请号：US40005273
申请日：1973-09-24
申请人： FISCHER EDWARD J
发明人： FISCHER EDWARD J
IPC分类号： E03C1/10 , F16K15/02 , F16K27/02 , F16K21/18
CPC分类号： E03C1/104 , F16K15/02 , F16K27/0209 , Y10T137/3149 , Y10T137/7915
摘要： A toilet reservoir valve assembly incorporating a mounting fixture rigidly fixed in the bottom panel of a toilet reservoir tank. A water supply pipe is compressively attached by a threaded nut to the bottom of the mounting fixture. An anti-syphon valve assembly is rigidly fixed to the top of the supply pipe and extends into the bottom of the mounting fixture. The valve assembly incorporates a mechanically free valve. The valve opens by positive water pressure in the supply pipe and simultaneously throttles the flow of water since the valve moves vertically inside a concentric tube that constitutes an upper extension of the anti-syphon valve assembly. The valve closes against an annular seat by zero or negative pressure in the supply pipe, thus preventing tank water from syphoning into the supply pipe.
摘要翻译：一个马桶水箱阀门组件，其内装有刚性地固定在马桶储水罐的底板中的安装夹具。供水管通过螺母与安装夹具的底部压缩连接。防虹吸阀组件刚性地固定在供应管的顶部并延伸到安装夹具的底部。阀组件包含机械自由阀。阀门通过供水管中的正水压力打开，同时节流水流，因为阀门在构成防虹吸阀组件的上延伸部的同心管内垂直移动。阀门在供气管上以零或负压关闭环形阀座，从而防止油箱水进入供油管道。

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