Flow control valve
    1.
    发明授权
    Flow control valve 失效
    流量控制阀

    公开(公告)号:US4998561A

    公开(公告)日:1991-03-12

    申请号:US446376

    申请日:1989-12-05

    IPC分类号: F16K31/06 F16K39/02

    摘要: A flow control valve comprising a main valve for opening and closing a fluid conduit, an electromagnetic coil for driving the main valve, a diaphragm responsive to the action of the main valve, a sub-valve chamber partitioned by the main valve and the diaphragm, a sub-valve incorporated in the main valve for opening and closing the sub-valve chamber to a conduit in the secondary side, a projection, protrusively formed on a driving shaft of the electromagnetic coil, responsive to a driving force of the electromagnetic coil for sliding the sub-valve by a predetermined stroke to bring the same in a fully opened state with the main valve remaining in a closed state and thereafter opening the main valve, a bleed orifice provided through a side wall of the main valve for making the pressure in the sub-valve chamber equal to a primary pressure; and a returning spring for urging each of the main valve and the sub-valve in the closing direction.

    摘要翻译: 一种流量控制阀,包括用于打开和关闭流体导管的主阀,用于驱动主阀的电磁线圈,响应于主阀的作用的隔膜,由主阀和隔膜分隔的副阀室, 并入主阀中的副阀,用于将次阀室打开和关闭到次级侧的导管,突出部形成在电磁线圈的驱动轴上,该突起响应于电磁线圈的驱动力,用于 以预定行程滑动副阀,使其处于完全打开状态,主阀保持在关闭状态,然后打开主阀,通过主阀的侧壁设置的排气孔,用于使压力 在次阀室中等于初级压力; 以及用于沿关闭方向推压主阀和副阀的每一个的复位弹簧。