Abstract：The impeller of double channel sewage pump is different from common centrifugal pump.So the method of building 3D model needs to be further explored.Modeling 3D shape of the impeller in Pro/E was carried out.3D passage center-line is generated by projection,then it is made as the original tra-jectory to produce inner passage by command sweep and blend,with passage cross-sections as sections.Inner passage center-line is extended to the outer diameter of the impeller with its rule formula,the curve resulted is regarded as a original trajectory,and sections are placed in proper position through outer passage profile line.Then the outer passage can be made by command sweep and blend.A failure to form double-inner-channel is very likely to be encountered during the process of transforming 2D drawing to 3D model of double-channel impeller.If such thing happens,the position and direction of cross-section should be adjusted first,then the shape of cross section and passage center-line can be changed.
[1] 施卫东,曹卫东,刘厚林.不同叶轮结构型式对污水泵性能的影响[J].农业工程学报,2003,19(2):114-116[2] KSB A G.Sewage pump designed for high efficiency[J].World Pumps,1996(4):42-43[3] 施卫东,桑一萌,王准.高效无堵塞泵的研究开发与发展展望[J].排灌机械,2006,24(6):48-52[4] 关醒凡.现代泵技术手册[M].北京:宇航出版社,1995[5] 许洪元.离心式渣浆泵的设计理论研究与应用[J].水力发电学报,1998(1):76-84[6] 刘厚林,关醒凡,李幼康.双流道叶轮的设计方法[J].流体机械,1999,27(9):15-17[7] 李红,袁寿其,袁建平.基于泵内纸浆悬浮液数值计算的纸浆泵设计[J].江苏大学学报(自然科学版),2007,28(1):51-55[8] 刘小龙,施卫东,曹卫东.双流道泵三维实体造型过程的研究[J].流体机械,2003,31(4):12-14,48[9] 倪合玉.双流道污水泵叶轮的设计方法与设计实践[J].通用机械,2004(6):67-69
