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    • 6. 发明授权
    • Dual impeller pump
    • 双叶轮泵
    • US4732236A
    • 1988-03-22
    • US852773
    • 1986-04-16
    • David L. Jacques
    • David L. Jacques
    • F04D29/22F04D1/00F04D29/06F01M11/06
    • F04D29/06F04D1/006
    • A liquid scavenging pump system for scavenging oil or the like from a blower, an engine or the like. A casing is provided for housing the blower and defining an oil receiving cavity. A dual pump is mounted in the casing and has first and second pumps in communication with the casing cavity for conjoint rotation. A first inlet is provided from the casing cavity to the first pump, and a first outlet is provided from the first pump for delivering oil from the cavity to a pump or the like. A second inlet is provided from the casing cavity, remote from the first inlet, to the second pump. The second outlet from the second pump is in communication with the first inlet to the first pump to facilitate operating the pump at various attitudes. The dual pump is of the radial-vaned impeller type, but includes two sets of axially spaced impeller vanes separated by a common barrier and including a sleeve for mounting on a common drive shaft. The impeller vanes, the barrier and the sleeve all are fabricated as a single unitarily constructed structure, such as by molding.
    • 一种用于从鼓风机,发动机等中清除油等的液体清除泵系统。 提供了用于容纳鼓风机并限定油接收腔的壳体。 双泵安装在壳体中,并且具有与壳体腔连通的第一和第二泵,用于联合旋转。 从壳体腔向第一泵提供第一入口,并且从第一泵提供第一出口,用于将油从空腔输送到泵等。 第二入口从壳体空腔提供,远离第一入口到第二泵。 来自第二泵的第二出口与第一泵的第一入口连通,以便以各种姿态操作泵。 双泵是径向叶轮类型的,但是包括两组轴向隔开的叶轮叶片,它们由公共挡板分开并且包括用于安装在公共驱动轴上的套筒。 叶轮叶片,阻挡件和套筒都被制造为单一的整体结构,例如通过模制。