发明名称 |
Improvements relating to centrifugal pump impellers. |
摘要 |
<p>A centrifugal pump impeller includes front and back shrouds and a plurality of pumping vanes therebetween, each pumping vane having a leading edge in the region of an impeller inlet and a trailing edge, the front shroud has an arcuate inner face in the region of the impeller inlet, the arcuate inner face having a radius of curvature (Rs) in the range from 0.05 to 0.16 of the outer diameter of the impeller (D2) The back shroud includes an inner main face and a nose having a curved profile with a nose apex in the region of the central axis which extends towards the front shroud, there being a curved transition region between the inner main face and the nose. Fr is the radius of curvature of the transition region and the ratio Fr/D2 is from 0.32 to 0.65. Other ratios of various dimensions of the impeller are also described.</p> |
申请公布号 |
AP201005475(D0) |
申请公布日期 |
2010.12.31 |
申请号 |
AP20100005475 |
申请日期 |
2009.05.27 |
申请人 |
WEIR MINERALS AUSTRALIA LTD |
发明人 |
BURGESS KEVIN EDWARD;LIU WEN-JIE;LAVAGNA LUIS MOSCOSO |
分类号 |
F04D29/22;F04D7/04;F04D29/24 |
主分类号 |
F04D29/22 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|