PAGE\*MERGEFORMAT33双吸渣浆泵设计及机械密封设计摘要：泵是应用非常广泛的通用机械，可以说是液体流动之处，几乎都有泵在工作。而且，随着科学技术的发展，泵的应用领域正在迅速扩大，根据国家统计，泵的耗电量都约占全国总发电量的1/5,可见泵是当然的耗能大户。因而,提高泵技术水平对节约能耗具有重要意义。离心式渣浆泵广泛应用于煤炭、矿山、冶金、电力、水利、交通等部门，主要进行静矿、尾矿、灰渣、泥沙等固体物料的水力输送，但其过流部件的磨损相当严重，其主要破坏形式为过流部件洞穿和变形，过流部件的严重磨损，恶化了泵内流动特性及外特性，缩短了泵的实际使用寿命，使生产效率降低，加大耗能和设备的投资，进而影响生产的发展。因此所设计的渣浆泵中采用多叶片数来减少单个叶片的磨损，适当的增加过流部件的厚度并采用高硬度的耐磨材料来来减小磨损，将叶轮入口的后盖板设计为凸出的、由光滑圆弧组成的轮毂头。采用机械端面密封使密封面紧密贴合，防止介质泄漏，自动补偿密封面磨损。本设计详细介绍了渣浆泵的总体结构、工作原理、结构设计和机械密封设计。关键词:渣浆泵机械密封密封圈DoublesuctionslurrypumpdesignandmechanicalsealdesignAbstract:Pumpisthemostwidelyusedgeneralmachinery,itcanbesaidthatanyliquidflows,almostallofthepumpswork,Withthedevelopmentofscienceandtechnology,pumpingapplicationareasareexpandingrapidly,Accordingtonationalstatistics.Pumppowerconsumptionaccountedforafifthofthecountry,wecanseethatthepumpisonlynaturalconsumptionmarket.Pumptechnologywillincreasethelevelofenergyconservationhasaveryimportantsignificance.Theslurrypumpistheextensiveapplyinginthecoal,mineralmountain,metallurgy,electrical,waterconservancy,transportationandsoon.Itismaintoproceedthewaterpowerofthestaticmineral,tailmineral,ashgrain,sedimentsolidmaterialtransportation.Butitsveryseriousovertheabrasionthatflowtheparts.Itsmainbreakageformisoverflowthepartspenetratewithtransformation.Overseriousabrasionthatflowtheparts，itisworseningthepumpinsideflowscharacteristicandoutsidecharacteristics,shortingtheactualservicelifeofthepumpandmakingproductionefficiencylower,enlargingconsumestheinvestmentoftheequipments,andthenaffectingthedevelopmentoftheproduction.Itadoptmanyleaf'snumbertoreducethesingleabrasionofleaf'ssliceforthisdesigningslurrypump,alsoincreasedcombinesoverthethicknessthatflowthepartsthehighdegreeofhardnessinadoptionbearstowhetthematerialtocometoletupthewearandtear,andempressedanentrancecoversplankdesignastobulgeandsmoothhubcaphead.Thisdesignwasdetailedtointroducethetotalconstructionthatslurrypump,theworkprincipledesignswiththeconstructionandthemechanicals