工程塑料泵叶轮强度计算  

Strength calculation for plastic pump impeller

作　　者：马新华[1] 桑建国[1] 李娟[1] 刘厚林[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《排灌机械》2007年第2期23-25,共3页Drainage and Irrigation Machinery

基　　金：江苏省自然科学基金资助项目(BK2004406)

摘　　要：针对目前广泛使用的工程塑料泵叶轮,对叶片和盖板进行受力分析,得出不同比转数叶轮叶片所对应的系数k1。根据简化模型并应用轮盘理论,详细推导了塑料泵叶轮强度计算公式。结合应用实例,对几种常用工程塑料泵叶片和盖板的强度进行了校核。计算和分析表明:工程塑料中,UHMWPE和PP的部分牌号可以满足强度要求;而PPO和PVDF由于性能优良,可以满足强度要求,从而为泵用工程塑料的选择和使用提供了理论依据。Impeller stress for pumps made of engineering plastics was analysed. The coefficients of k1 for various ns were summarized. The strength calculating formula for the impeller was obtained based on sireplified model and cover board theory. The strength of pump impeller made of engineering plastics in cornmon use was proofreaded by using this formula. The results show that UHMWPE and PP can be used in limited field and PPO and PVDF are the best, which provide the theory for engineering plastics choice.

关 键 词：叶轮 工程塑料 强度 应力 

分 类 号：TH311[机械工程—机械制造及自动化]