High head centrifugal slicing slurry pump
    2.
    发明公开
    High head centrifugal slicing slurry pump 失效
    高档离心机SLUUR PUMP

    公开(公告)号:EP0057319A3

    公开(公告)日:1983-01-26

    申请号:EP81305743

    申请日:1981-12-04

    申请人: Vaughan Co., Inc.

    发明人: Dorsch, Glenn R.

    IPC分类号: F04D07/04 F04D29/42

    CPC分类号: F04D7/045

    摘要: A booster propeller (15) is located in a flared funnel (28) leading toward inlet apertures (14) in an end plate (13) of a centrifugal pump casing (5). Such propeller has radially projecting blades (16) of generally triangular cross section for propelling slurry toward the apertures. The end plate is recessed into the impeller-receiving bowl (6) of the pump casing. The inner face of the end plate is flush with the adjoining inner face of the peripheral pump outlet conduit (18). The impeller (7) has vanes (10) projecting toward the end plate and having cupped leading surfaces forming a sharpened edge. Such blades are swept back in the area of the end plate inlet apertures for effective slicing of solid material in the slurry in combination with edges of the inlet apertures. The pump bowl has a semicylindrical wall portion closely encircling the impeller before the wall spirals volutely outward to the outlet conduit.

    摘要翻译: 增压螺旋桨位于通向离心泵壳体的端板中的弓形入口孔的扩口漏斗的入口处。 这种螺旋桨具有大致直角三角形横截面的径向突出的叶片,底部由宽的后侧和远离叶轮的宽的底侧构成; 每个叶片的斜边是相对于垂直于轴线的平面倾斜的宽上表面,用于将浆料推向入口孔。 端板凹入到泵壳的叶轮容纳碗中,使得端板的内表面与与泵壳一体的外围泵出口导管的相邻内表面齐平。 叶轮具有垂直于轴线的圆形护罩板,叶片或叶片朝向端板突出并且具有形成锋利边缘的杯形前表面。 这样的叶片在端板入口孔的区域中被扫掠,以有效地切割浆料中的块状物或块状物料,并与入口孔的锋利前缘组合。 泵壳碗具有紧密地围绕叶轮的半圆柱形壁部分,并且在碗壁螺旋向外螺旋到出口导管之前提供用于浆料向外加速的增压区域。 从罩板相对于泵送叶片突出的短肋或叶片在壳体顶部处的密封区域保持轻微的抽吸。

    Centrifugal pump for very thick and/or viscous materials and products
    3.
    发明公开
    Centrifugal pump for very thick and/or viscous materials and products 失效
    离心泵用于非常厚的和/或VISCOUS材料和产品

    公开(公告)号:EP0131326A3

    公开(公告)日:1985-06-12

    申请号:EP84200934

    申请日:1984-06-28

    IPC分类号: F04D07/04

    CPC分类号: F04D29/2216 F04D7/04

    摘要: A centrifugal pump for very thick and/or viscous materials and products comprises a screw impeller of at least one start, of which the component blade, which is in the form of a helix (8) having a pitch which increases in the material feed direction, has a slightly conical outer profile, is wound on a highly conical core (5) smoothly joined to a base disc (6), and at its downstream terminal portion is twisted towards the core (5) to assume the configuration of a delivery vane (9) forming an acute angle with the disc (6) and disposed a chord thereof, and supporting an overlying circumferential ring (10) which defines a closed delivery duct for the material.

    Submerged motor pump for transporting submarine minerals
    4.
    发明公开
    Submerged motor pump for transporting submarine minerals 失效
    用于运输矿物矿物的电动马达泵

    公开(公告)号:EP0108869A3

    公开(公告)日:1985-05-22

    申请号:EP83108096

    申请日:1983-08-17

    IPC分类号: F04D07/04 E02F03/90

    CPC分类号: F04D29/167

    摘要: Hierbei geht es um die Spülung der Laufradspaltringe bzw. Drosselspalten, welche durch die in der Förderflüssig keit enthaltenen Feststoffe einem erhöhten Verschleiß aus gesetzt sind. Da spezielle Spülpumpen bei den in großen Meerestiefen angeordneten Unterwassermotorpumpen ei nen erheblichen zusätzlichen Aufwand darstellen, wurde eine andere Lösung gefunden. Es werden die zu spülenden Stellen von denjenigen Pumpenstufen, deren Druck kleiner als der äußere hydrostatische Druck ist, direkt mit dem umgebenden Meerwasser gespült.

    摘要翻译: 这涉及由于钻井液中的固体而暴露于增加的磨损的转子分裂环或节流间隙的冲洗。 由于特殊的钻井液泵在海底水下的潜水电机泵中代表了可观的附加成本,因此已经找到了不同的解决方案。 在压力低于外部静水压力的泵送阶段中冲洗的点被直接与周围的海水冲刷。