发明名称 IMPROVEMENTS RELATING TO CENTRIFUGAL PUMP IMPELLERS.
摘要 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.
申请公布号 MX339040(B) 申请公布日期 2016.05.05
申请号 MX20100013007 申请日期 2009.05.27
申请人 WEIR MINERALS AUSTRALIA LTD 发明人 KEVIN EDWARD BURGESS;WEN-JIE LIU;LUIS MOSCOSO LAVAGNA
分类号 F04D29/22;F04D29/24 主分类号 F04D29/22
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