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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：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,thetwogearsmounted
2、inside,thediameterofgearandworkcloselywithbothsidesandshell.Fromtheextruderthematerialinhaledintothemouthoftwointermediategears,andfullofthespace,withtheteethalongtheshelloftherotarymovement,thefinaltwohoursfromthemeshingteeth.Speakingintermsofgear,alsoknowna
3、spositivedisplacementpumpdevice,thatis,insidethecylinderlikeapiston,whenatoothtoanothertoothspaceofthefluid,theliquidwassqueezedmechanicallytorowout.Becausetheliquidisincompressible,sotheliquidandthetoothatthesametimewillnotbeabletooccupythesamespace,sothatth
4、eliquidhasbeenruledout.Becauseoftheconstantmeshgear,thisphenomenonoccursonarowand,therefore,thepumpprovidesacontinuousexporttoexcludetheamountofaturneachpump,thevolumeofdischargeisthesame.Withthecontinuousrotationofthedriveshaft,pumpfluidiscontinuouslydischar
5、ged.Pumpflowdirectlytothespeedofthepump.Infact,thereislittlepumpofthefluidloss,whichmakestheoperationofpumpscannotachieve100%efficiency,asthesefluidsareusedtoonbothsidesofbearingandgearlubrication,andthepumpbodyisalsonotpossiblewithnogap,itcannotbesothat-17-中
6、高压外啮合齿轮泵-外文文献100%offluiddischargedfromtheexport,soasmallamountoffluidlossisinevitable.However,agoodpumpcanberunoutofmaterialforthemajority,willstillbeabletoachieve93%~98%efficiency.Fortheviscosityordensitychangeintheprocessfluid,thepumpwillnotbeaffectedtoomuc
7、h.Ifthereisadamper,forexample,intheexportside,oneroworalimiterfilter,pumpswillpushfluidthroughthem.Ifthedamperchangesintheirwork,thatis,ifthefiltersbecomedirty,blocked,orlimiteronthebackofthehypertension,thepumpwillmaintainaconstantflow,untilthedeviceinthewea
8、kestpartsofthemechanicallimit(usuallyequippedwithatorquelimiter).Forapumpspeed,infact,therearerestrictions,whichmainlydependsontheprocessfluid,ifthetransmissionisoil,pumpcanrotateathighsp
