螺旋离心式砂石泵的结构设计说明书.doc

黑龙江工程学院本科生毕业设计1目录摘要·········································································································IABSTRACT································································································II第1章绪论····························································································11.1选题背景及意义·························································错误!未定义书签。1.2砂石泵的概述及发展··················································错误!未定义书签。1.2.1砂石泵的工作原理··············································错误!未定义书签。1.2.2砂石泵的主要零部件···········································错误!未定义书签。第2章砂石泵的总体结构设计········································错误!未定义书签。2.1砂石泵结构设计的总体方案分析···································错误!未定义书签。2.2.1螺旋离心泵叶轮结构特征·····································错误!未定义书签。2.2.2砂石泵的主要性能参数········································错误!未定义书签。2.2确定泵的总体结构形式················································错误!未定义书签。2.3泵的进出口直径的确定················································错误!未定义书签。2.3.1进口直径···························································错误!未定义书签。2.3.2泵的出口直径Dd·················································错误!未定义书签。2.4泵转速的确定····························································错误!未定义书签。2.5确定泵的水利方案······················································错误!未定义书签。2.6本章小结··································································错误!未定义书签。第3章砂石泵的水利设计计算········································错误!未定义书签。3.1轴功率和原动机功率···················································错误!未定义书签。3.2泵轴径和叶轮轮毂直径的初步计算·······························错误!未定义书签。3.3叶轮主要尺寸的确定方法·············································错误!未定义书签。3.3.1基本公式···························································错误!未定义书签。3.3.2用速度系数法计算叶轮主要尺寸的公式··················错误!未定义书签。3.3.3叶轮磨损分析····················································错误!未定义书签。3.4压水室设计······························································错误!未定义书签。3.4.1涡形体各断面面积内的平均速度3v························错误!未定义书签。3.4.2、舌角3a的计算··················································错误!未定义书签。黑龙江工程学院本科生毕业设计23.4.3基圆直径3D······················································错误!未定义书签。3.5叶片厚度的确定·························································错误!未定义书签。3.6本章小结··································································错误!未定义书签。第4章轴向力及其平衡···················································错误!未定义书签。4.1产生轴向力的主要原因··············································错误!未定义书签。4.2轴向力的计算··························································错误!未定义书签。4.3轴向力的平衡方法····················································错误!未定义书签。第5章砂石泵主要零件的强度计算·································错误!未定义书签。5.1引言·········································································错误!未定义书签。5.2叶轮强度计算····························································错误!未定义书签。5.2.1盖板强度计算·····················································错误!未定义书签。5.2.2叶片厚度计算·····················································错误!未定义书签。5.3泵轴的强度校核··························································错误!未定义书签。5.3.1泵轴的强度计算·················································错误!未定义书签。5.3.2泵轴的刚度校核·················································错误!未定义书签。5.4键的校核··································································错误!未定义书签。5.4.1键的选择··························································错误!未定义书签。5.4.2键联接强度计算·················································错误!未定义书签。5.5本章小结··································································错误!未定义书签。第6章砂石泵主要通用零部件的选择·····························错误!未定义书签。6.1正确选用砂石泵主要通用零件的重要性·························错误!未定义书签。6.2轴封结构的选择··························································错误!未定义书签。6.3轴承部件的选择·························································错误!未定义书签。6.4联轴器的选择····························································错误!未定义书签。6.5电动机的选择····························································错误!未定义书签。6.6本章小结··································································错误!未定义书签。结论···············································································错误!未定义书签。参考文献···········································································错误!未定义书签。致谢···············································································错误!未定义书签。黑龙江工程学院本科生毕业设计3摘要砂石泵有较多优点，在国民经济中广泛使用，但国内尚无这种新型砂石泵产品。因此，本人对此类型的泵进行了探索性设计，在普通螺旋泵的基础上结合离心泵原理，增加其过流面积等方法。使其达到设计最初要求。在设计过程中对此类泵的结构和在泵工作中可能出现的问题进行了分析和改造，并综合分析其影响，对此类泵的性能因素，提出改善方案。另外，对平衡轴向力的问题上，以及径向力的平衡等，做出了说明。并在结构设计过程中，合理选择结构形式，优化结构参数，对主要零件进行强度校核，保证该泵具有良好的工作性能和可靠性。关键词：砂石泵；水利计算；叶轮；结构设计；市场黑龙江工程学院本科生毕业设计4ABSTRACTGravelpumphasmuchadvantageandextensiveusageinnationaleconomy,butchinahasnothiskindofnewgravelpumpproduct.Therefore,thedesignproceededtothistypepumpquestdesigninthefoundationofcommonspiralpumpthecombinationleavestheheartthepumptheprinciple,increasingitsoverflowareaandmethodtomakeitsattainthefirstrequestindesign.Inthedesignprocessitanalyzesthistypeconstructionandtheproblemthatmayappearintheworkingprecedecombiningtosynthesizetoanalyzeitsinfluence.Alsothisthesisrisestheimproveprogramaboutthefunctionfactor.Besides,thepapermakesthenotesabouttheaxialforcebalanceandthepathforcebalance.Inthestructuralprocess,thepaperchoosethereasonablestructure,optimizethestructureparametersandcheckthestrengthofthemaincomponentstoguaranteeagoodperformanceandreliability.Keywords:FreestonePump；WaterConservancyCounting；Impeller；ConstructionDesign；Market