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1、武汉科技大学本科毕业设计（外文文献）题目：中高压外啮合齿轮泵设计姓名：专业：交通运输学号：200934011指导教师：中高压外啮合齿轮泵-外文文献外文文献一Theconceptofgearpumpisverysimple,thatitistwoofthemostbasicformofthesamesizegearinacloseco-operationofmutualengagementwiththerotatingshell,theshell'sinternalsimilar"8"shape,thetwogearsmountedinsi
2、de,thediameterofgearandworkcloselywithbothsidesandshell.Fromtheextruderthematerialinhaledintothemouthoftwointermediategears,andfullofthespace,withtheteethalongtheshelloftherotarymovement,thefinaltwohoursfromthemeshingteeth.Speakingintermsofgear,alsoknownaspositivedisplace
3、mentpumpdevice,thatis,insidethecylinderlikeapiston,whenatoothtoanothertoothspaceofthefluid,theliquidwassqueezedmechanicallytorowout.Becausetheliquidisincompressible,sotheliquidandthetoothatthesametimewillnotbeabletooccupythesamespace,sothattheliquidhasbeenruledout.Because
4、oftheconstantmeshgear,thisphenomenonoccursonarowand,therefore,thepumpprovidesacontinuousexporttoexcludetheamountofaturneachpump,thevolumeofdischargeisthesame.Withthecontinuousrotationofthedriveshaft,pumpfluidiscontinuouslydischarged.Pumpflowdirectlytothespeedofthepump.Inf
5、act,thereislittlepumpofthefluidloss,whichmakestheoperationofpumpscannotachieve100%efficiency,asthesefluidsareusedtoonbothsidesofbearingandgearlubrication,andthepumpbodyisalsonotpossiblewithnogap,itcannotbesothat-17-中高压外啮合齿轮泵-外文文献100%offluiddischargedfromtheexport,soasmall
6、amountoffluidlossisinevitable.However,agoodpumpcanberunoutofmaterialforthemajority,willstillbeabletoachieve93%~98%efficiency.Fortheviscosityordensitychangeintheprocessfluid,thepumpwillnotbeaffectedtoomuch.Ifthereisadamper,forexample,intheexportside,oneroworalimiterfilter,
7、pumpswillpushfluidthroughthem.Ifthedamperchangesintheirwork,thatis,ifthefiltersbecomedirty,blocked,orlimiteronthebackofthehypertension,thepumpwillmaintainaconstantflow,untilthedeviceintheweakestpartsofthemechanicallimit(usuallyequippedwithatorquelimiter).Forapumpspeed,inf
8、act,therearerestrictions,whichmainlydependsontheprocessfluid,ifthetransmissionisoil,pumpcanrotat
