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    • 3. 发明授权
    • Valve arrangement for unloading liquid flow at a non-return valve
    • 用于在止回阀处卸载液体流的阀装置
    • US4638831A
    • 1987-01-27
    • US828758
    • 1985-12-24
    • Nils E. Lindgren
    • Nils E. Lindgren
    • F16K15/02F16K15/18G05D7/01
    • F16K15/026F16K15/18Y10T137/2584Y10T137/2587
    • A minimum flow valve device includes a housing providing a liquid passageway therethrough having an inlet end and an outlet end; a guide element mounted in the liquid passageway which provides an internal chamber that is open towards the inlet end of the liquid passageway, the guide element including a discharge orifice communicating with the internal chamber; an unloading pipe extending through the housing and communicating with the discharge orifice; an annular non-return valve element; and a valve sleeve member connected to the non-return valve element and extending within the internal chamber. The valve sleeve member includes orifices such that when the non-return valve element and the valve sleeve member are positioned to block liquid flow through the liquid passageway, liquid will flow through the discharge orifice and out the unloading pipe.
    • PCT No.PCT / SE85 / 00189 Sec。 371日期1985年12月24日第 102(e)1985年12月24日PCT PCT申请日1985年4月26日PCT公布。 公开号WO85 / 05430 1985年12月5日,最小流量阀装置包括一个壳体,提供一个通过其的液体通道,该液体通道具有入口端和出口端; 安装在所述液体通道中的引导元件,其提供朝向所述液体通道的入口端开口的内部腔室,所述引导元件包括与所述内部腔室连通的排出口; 卸载管,其延伸穿过所述壳体并与所述排放孔连通; 环形止回阀元件; 以及连接到止回阀元件并在内部腔室内延伸的阀套件。 阀套构件包括孔,使得当止回阀元件和阀套构件被定位成阻止流过液体通道的液体流动时,液体将流过排出孔并排出卸载管。