Impeller assembly for centrifugal pump
    2.
    发明授权
    Impeller assembly for centrifugal pump 有权
    离心泵叶轮总成

    公开(公告)号:US06609890B2

    公开(公告)日:2003-08-26

    申请号:US10055129

    申请日:2002-01-23

    IPC分类号: F04D2920

    CPC分类号: F04D29/2294 F04D29/2222

    摘要: An impeller assembly for reducing blockage at the inlet of a centrifugal pump includes an impeller having an inlet side and a bearing hub, wherein the bearing hub extends axially outwardly from the inlet side of the impeller. A conical floating sleeve is mounted on the bearing hub and held in place by a detachable retainer. The mating surfaces of either the bearing or the conical floating sleeve may be coated with a polymer to reduce surface friction. The bearing hub of the impeller may also be bored to receive a drive shaft.

    摘要翻译: 用于减少离心泵入口处阻塞的叶轮组件包括具有入口侧和轴承毂的叶轮,其中轴承毂从叶轮的入口侧轴向向外延伸。 锥形浮动套筒安装在轴承座上,并通过可拆卸的保持架保持在适当位置。 轴承或锥形浮动套管的配合表面可以用聚合物涂覆以减少表面摩擦。 叶轮的轴承毂也可以是无孔的以接收驱动轴。

    Multi-purpose end casings for ring type multi-stage centrifugal pumps
    4.
    发明授权
    Multi-purpose end casings for ring type multi-stage centrifugal pumps 失效
    环形多级离心泵用多功能端壳

    公开(公告)号:US4116583A

    公开(公告)日:1978-09-26

    申请号:US773709

    申请日:1977-03-02

    申请人: Allan R. Budris

    发明人: Allan R. Budris

    CPC分类号: F04D29/628 F04D1/066

    摘要: Multi-purpose end casing for ring type multi-stage centrifugal pumps adaptable respectively for the side suction end casings and side discharge end casings of horizontal, vertical and dry pit side suction multi-stage ring type centrifugal pumps, are disclosed as having a generally cylindrical body portion having at least four tie rod lugs extending therefrom at generally 90.degree. intervals. Each of the tie rod lugs has an ample adapter bearing surface, and a rabbet fitted surface formed thereon to render the same utilizable with a variety of adapters as may be required in different types of pumps on which the end casings are used. Machined, foot mounting surfaces are provided on at least three sides of the respective side suction end casings and side discharge end casings to enable the ready attachment and detachment of pump casing mounting feet. In addition, bearing housings including provision for pump stuffing box leakage collection and drainage are operatively associated with the respective end casings to provide additional versatility.

    摘要翻译: 分别适用于水平,垂直和干式凹坑侧抽吸多级环型离心泵的侧抽吸端壳体和侧排出端壳体的多用途端壳,其具有通常为圆柱形 主体部分具有至少四个拉杆凸耳,以大致90度的间隔从其延伸。 每个拉杆凸耳具有足够的适配器支承表面和形成在其上的拉杆配合表面,以使其能够与在其上使用端部壳体的不同类型的泵中可能需要的各种适配器一起使用。 加工的脚安装表面设置在相应的侧抽吸端壳体和侧排出端壳体的至少三个侧面上,以使泵壳安装脚的准备安装和拆卸。 此外,包括用于泵填料函泄漏收集和排放的轴承座与相应的端部壳体可操作地相关联,以提供额外的多功能性。

    Multi-stage ring type centrifugal pumps with inducer means
    5.
    发明授权
    Multi-stage ring type centrifugal pumps with inducer means 失效
    带诱导装置的多级环式离心泵

    公开(公告)号:US4097186A

    公开(公告)日:1978-06-27

    申请号:US742899

    申请日:1976-11-18

    申请人: Allan R. Budris

    发明人: Allan R. Budris

    摘要: Multi-Stage ring type centrifugal pumps for pumping fluids are adapted to receive an inducer shaped and sized generally but not necessarily to replace the impeller and diffuser of the first pumping stage of the given centrifugal pump. The preferred type of inducer for this use has an enlarged inlet diameter, at least two inducer vanes; an outlet diameter less than the inlet diameter to provide generally convergent flow passages, and the selected inlet vane angle for the inducer vanes will provide a positive incidence angle to increase the pressure at the suction inlet of the associated stage impeller into which the fluid being pumped is delivered. The inductor is shown in various forms. One embodiment includes an integral hub, inducer vanes and outer shroud. A second male type embodiment includes an integral hub and inducer vanes, and an operatively associated fixed outer shroud matched to the outer periphery of the inducer vanes. A third female type embodiment includes an integral outer shroud and inducer vanes, and an operatively associated separate shaft sleeve matched to the inner periphery of the inducer vanes. Where the outer shroud is rotatable as in the first and second embodiment the inducer is provided with a wearing ring sealing assembly to retain the pressure developed by the inducer.

    摘要翻译: 用于泵送流体的多级环型离心泵适于接收形状和尺寸大致但不一定代替给定离心泵的第一泵送级的叶轮和扩散器的诱导器。 用于该用途的诱导剂的优选类型具有扩大的入口直径,至少两个诱导器叶片; 出口直径小于入口直径,以提供大致会聚的流动通道,并且用于导流叶片的所选择的入口叶片角度将提供正入射角以增加在被泵送的流体所在的相关级叶轮的吸入口处的压力 交付