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88 条记录 (耗时 0.012 秒)

    Sealed valve and related structure
    81.
    再颁专利
    Sealed valve and related structure 失效
    密封阀及相关结构

    公开(公告)号：USRE30989E

    公开(公告)日：1982-07-06

    申请号：US165419

    申请日：1980-07-03

    申请人： Earl A. Bake ,  William G. Lunt

    发明人： Earl A. Bake ,  William G. Lunt

    IPC分类号： F16K1/10 ,  F16K31/50 ,  F16K41/12

    CPC分类号： F16K41/12 ,  F16K1/10 ,  F16K31/50

    摘要： A metal diaphragm valve including a multiple ply metal diaphragm structure comprised of a plurality of thin circular metal elements each having a planar annular rim surrounding a dome-shaped interior portion superimposed one on top of another with their annular rims fixed together to seal the hollow interior portion of a valve bonnet. A diaphragm contacting surface including at least two areas of different degrees of curvature, one of which is cruciform in shape, is mounted for axial movement in the valve bonnet. A method of making the metal diaphragm structure and a hermetically sealed valve assembly are also disclosed.

    Valve
    82.
    发明授权
    Valve 失效
    阀

    公开(公告)号：US4268472A

    公开(公告)日：1981-05-19

    申请号：US88057

    申请日：1979-10-24

    申请人： Douglas D. J. Nightingale

    发明人： Douglas D. J. Nightingale

    IPC分类号： F16K1/10 ,  F16K1/36 ,  B29C13/00

    CPC分类号： F16K1/10 ,  Y10S264/71 ,  Y10S264/76 ,  Y10T137/3015

    摘要： A valve especially suitable as a relatively cheaply manufactured means for controlling liquids in laboratory equipment, comprises a body having a valve seat with a flow passage passing through the seat, and a spindle located within the body; the spindle comprising a mandrel having an annular groove, a resilient annulus located in the annular groove, and an inert sheath fitted closely over the surface of an end portion of the mandrel and overlying the resilient annulus, the sheath having a closed end shaped to engage the seat for occlusion thereof and having overlying the resilient annulus an annular sealing portion standing proud of the surface of the rest of the sheath, the annular sealing portion being biased against the surrounding body to form a sliding gland seal. The sheath may be preformed or moulded in situ, and protects the mandrel and resilient annulus from attack by fluids flowing through the valve.

    摘要翻译： 特别适合作为相对廉价制造的用于控制实验室设备中的液体的装置的阀包括具有阀座的主体，所述阀座具有穿过所述座的流动通道和位于所述主体内的主轴; 所述心轴包括具有环形凹槽的心轴，位于所述环形凹槽中的弹性环，以及惰性护套，所述惰性护套紧密地配合在所述心轴的端部的表面上并覆盖所述弹性环，所述护套具有闭合的端部， 用于遮挡它并且具有覆盖弹性环的座位，环形密封部分站立在护套的其余部分的表面之上，环形密封部分被偏置抵靠周围的主体以形成滑动密封。 护套可以在现场预成型或模制，并且保护心轴和弹性环免受流过阀的流体的侵蚀。

    High pressure diaphragm valves
    83.
    发明授权
    High pressure diaphragm valves 失效
    高压隔膜阀

    公开(公告)号：US4171792A

    公开(公告)日：1979-10-23

    申请号：US784200

    申请日：1977-04-04

    申请人： Harold E. Bass

    发明人： Harold E. Bass

    IPC分类号： F16K1/10 ,  F16K7/00 ,  F16K41/12 ,  F16K31/50

    CPC分类号： F16K7/00 ,  F16K1/10 ,  F16K41/12

    摘要： A globe type Y-pattern diaphragm valve for high pressure, high temperature service affording increased diaphragm cycle life, enhanced flow coefficient and features of decreased construction cost. Comprising the diaphragm in one embodiment is a resiliently supported multi-layer cartridge formed of superimposed layers of different metals having different moduli of elasticity with the upper layers being radially slotted to redistribute encountered stress loads. In an alternate embodiment the multi-layer diaphragm cartridge is comprised of superimposed layers of like composition but of varying relative thicknesses and supported to afford a controlled flexure. An auxiliary porting in the discharge passage adjacent the valve head in combination with a downstream tapered and faired beltway effects a more nearly streamlined flow path to increase the flow coefficient rating of the valve. By means of a multi-purpose packing gland identically threaded both inside and out, the gland is able to also function as a stem bushing enabling a comparatively inexpensive bar stock bonnet construction to be employed.

    摘要翻译： 一种用于高压，高温服务的球形Y型隔膜阀，提高了膜片循环寿命，提高了流动系数，降低了施工成本。 在一个实施例中包括隔膜的是弹性支撑的多层筒，其由具有不同弹性模量的不同金属的叠加层形成，上层径向开槽以重新分布遇到的应力负荷。 在替代实施例中，多层隔膜盒由相同组成但具有变化的相对厚度的叠加层组成并被支撑以提供受控弯曲。 与排放通道相邻的排气通道与下游的锥形和流线组合结合的辅助端口可实现更加流线型的流路，以增加阀的流量系数。 通过内部和外部相同螺纹连接的多功能填料密封管，密封套还可以作为阀杆衬套起作用，从而可以采用相对便宜的棒式阀盖结构。