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1. 发明授权

US4565305A Rotary vane valve 失效
标题翻译：旋转叶片阀
公开(公告)号：US4565305A
公开(公告)日：1986-01-21
申请号：US499783
申请日：1983-05-31
申请人： John Fischer , Kenneth A. Heaton , John W. Pfeiffer
发明人： John Fischer , Kenneth A. Heaton , John W. Pfeiffer
IPC分类号： G01F11/24
CPC分类号： G01F11/24 , Y10T137/4442
摘要： A rotary vane valve having a cylindrical housing with a pair of opposed end bells and an interior axial shaft. Opposed inlet and outlet openings on the side of the cylindrical housing allow transverse fluid flow through the housing and radial vanes project from the axial shaft to facilitate the transfer of fluid from the inlet at one pressure to the outlet at a different pressure. A pair of spaced shroud structures are fixed to the shaft at the ends of the vanes to generally separate the interior of the cylindrical housing from the end bells. These shroud structures are spaced from the cylindrical housing at their outer peripheral edges, but an annular throttle plate is spaced axially outwardly at a close distance from these shrouds and adjacent at its outer edge to the cylindrical housing to increase the velocity of purge gas flowing inwardly between the cylindrical housing and the outer peripheral edge of the shroud so that the escape of gas from the interior of the cylindrical housing is effectively prevented.
摘要翻译：一种旋转叶片阀，其具有带有一对相对的端部钟形的圆柱形壳体和内部轴向轴。在圆柱形壳体侧面上的相对的入口和出口开口允许横向流体流过壳体，并且径向叶片从轴向突出，以便于在一个压力下将流体从入口传送到出口处于不同的压力。一对隔开的护罩结构在叶片的端部处固定到轴上，以将圆柱形壳体的内部与端部罩分开。这些护罩结构在其外围边缘处与圆柱形壳体间隔开，但是环形节流板在与这些护罩相距较近的距离处轴向向外隔开，并且在其外边缘处邻近圆柱形壳体，以增加向内流动的吹扫气体的速度在圆柱形壳体和护罩的外周边缘之间，从而有效地防止气体从圆柱形壳体的内部逸出。

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