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更新时间:2020-10-28 19:11:02

止回阀

止回阀】是茸阀流体旗下产品,,我们可为客户提供止回阀的作用,止回阀规格型号,止回阀尺寸结构图,标准,工作原理,止回阀安装说明书,欢迎来电咨询、采购。
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  止回阀启闭件为圆形阀瓣并靠自身重量及介质压力产生动作来阻断介质倒流的一种阀门,阀瓣运动方式分为升降式和旋启式。升降式止回阀与截止阀结构类似,仅缺少带动阀瓣的阀杆。介质从进口端(下侧)流入,从出口端(上侧)流出。当进口压力大于阀瓣重量及其流动阻力之和时,阀门被开启。反之,介质倒流时阀门则关闭。旋启式止回阀有一个斜置并能绕轴旋转的阀瓣,工作原理与升降式止回阀相似。止回阀常用作抽水装置的底阀,可以阻止水的回流,止回阀与截止阀组合使用,可起到安全隔离的作用。

  The Check Valve Is A Kind Of Valve Whose Opening And Closing Parts Are Round Valve Disc And Block The Reverse Flow Of Medium By Its Own Weight And Medium Pressure. The Movement Mode Of Valve Disc Is Divided Into Lifting Type And Swing Type. The Structure Of Lift Check Valve Is Similar To That Of Stop Valve, But It Lacks The Stem To Drive The Disc. The Medium Flows In From The Inlet End (lower Side) And Flows Out From The Outlet End (upper Side). When The Inlet Pressure Is Greater Than The Sum Of The Disc Weight And Its Flow Resistance, The Valve Is Opened. On The Contrary, The Valve Will Be Closed When The Medium Flows Backward. Swing Check Valve Has An Inclined Disc Which Can Rotate Around The Shaft. Its Working Principle Is Similar To That Of Lift Check Valve. Check Valve Is Often Used As The Bottom Valve Of Pumping Device, Which Can Prevent The Backflow Of Water. The Combination Of Check Valve And Stop Valve Can Play A Role Of Safety Isolation.

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