公开(公告)号：US20100143106A1

公开(公告)日：2010-06-10

申请号：US12531741

申请日：2008-03-10

Applicant: Colin Thomas Pomfret

Inventor： Colin Thomas Pomfret

IPC: F04D9/00 ,  F04D29/08

CPC classification number: F04D9/006

Abstract: A fluid pump comprising a pump body, a low pressure impeller, a high pressure impeller, impeller seal means separating the inlet side of the low pressure impeller from its pressure side, a pump priming system, and a pump priming conduit provided through the low pressure impeller radially inboard of the impeller seal means. The high pressure impeller is preferably provided within a cavity, defined by an impeller recess and a cover plate. A wear ring is preferably provided between the low pressure impeller and the inboard end of the cover plate. The pump priming conduit preferably comprises: first and second axial bores through the pump body; a radial bore and two axial holes through the cover plate; an axial hole through the rear wear ring; a cavity between the wear ring and the low pressure impeller; and axial holes through the low pressure impeller, connecting the cavity to the suction side of the low pressure impeller.

Abstract translation: 一种流体泵，包括泵体，低压叶轮，高压叶轮，将低压叶轮的入口侧与其压力侧分离的叶轮密封装置，泵起动系统和通过低压提供的泵起动管道 叶轮在叶轮密封装置的径向内侧。 高压叶轮优选地设置在由叶轮凹部和盖板限定的空腔内。 优选地，在低压叶轮和盖板的内侧端之间设置耐磨环。 泵起动管道优选地包括：通过泵体的第一和第二轴向孔; 径向孔和穿过盖板的两个轴向孔; 通过后磨损环的轴向孔; 磨损环和低压叶轮之间的空腔; 并通过低压叶轮的轴向孔，将空腔连接到低压叶轮的吸入侧。

公开(公告)号：US08419347B2

公开(公告)日：2013-04-16

申请号：US12531741

申请日：2008-03-10

Applicant: Colin Thomas Pomfret

Inventor： Colin Thomas Pomfret

IPC: F04D9/00

CPC classification number: F04D9/006

Abstract: A fluid pump comprising a pump body, a low pressure impeller, a high pressure impeller, impeller seal means separating the inlet side of the low pressure impeller from its pressure side, a pump priming system, and a pump priming conduit provided through the low pressure impeller radially inboard of the impeller seal means. The high pressure impeller is preferably provided within a cavity, defined by an impeller recess and a cover plate. A wear ring is preferably provided between the low pressure impeller and the inboard end of the cover plate. The pump priming conduit preferably comprises: first and second axial bores through the pump body; a radial bore and two axial holes through the cover plate; an axial hole through the rear wear ring; a cavity between the wear ring and the low pressure impeller; and axial holes through the low pressure impeller, connecting the cavity to the suction side of the low pressure impeller.

Abstract translation: 一种流体泵，包括泵体，低压叶轮，高压叶轮，将低压叶轮的入口侧与其压力侧分离的叶轮密封装置，泵起动系统和通过低压提供的泵起动管道 叶轮在叶轮密封装置的径向内侧。 高压叶轮优选地设置在由叶轮凹部和盖板限定的空腔内。 优选地，在低压叶轮和盖板的内侧端之间设置耐磨环。 泵起动管道优选地包括：通过泵体的第一和第二轴向孔; 径向孔和穿过盖板的两个轴向孔; 通过后磨损环的轴向孔; 磨损环和低压叶轮之间的空腔; 并通过低压叶轮的轴向孔，将空腔连接到低压叶轮的吸入侧。