进口容积泵/Positivedisplacementpump/德国品质德国KAYSEN凯森进口容积泵概述利用泵缸内容积的变化来输送液体的泵。往复泵：往复泵是利用活塞的往复运动来输送液体的泵，靠活塞的往复运动将能量直接以静压能的形式传送液体。由于液体是不可压缩的，所以在活塞压送液体时，可以使液体承受很高的压强，从而获得很高的扬程。转子泵：转子泵由静止的泵壳和旋转的转子组成，它没有吸入阀和排出阀，靠泵体内的转子与液体接触的一侧将能量以静压力形式直接作用于液体，并借旋转转子的挤压作用排出液体，同时在另一侧留出空间，形成低压，使液体连续吸入。转子泵的压头较高，流量通常较小，排液均匀，适用于输送粘度高，具有润滑性，但不含固体颗粒的液体。类型有齿轮泵、螺杆泵、滑片泵，挠性叶轮泵、罗茨泵、旋转活塞泵等，其中齿轮泵和螺杆泵是最常见的转子泵。主要特点：●具有离心泵运转的平稳性，无噪声（仅听到电机声)，无漏油现象，不需污油回收装置及水冷却等附属设备；●具有容积式泵效率高的特点，且压力变化时排量恒定（定速)；●泄漏点少、维护量小、维修费用低、维修时间短，但是螺杆泵主要用于输送高粘度的油品，输送稀油的效率比较低，且出口压力不能过高，否则内漏增加，影响泵的安全使用，同时螺杆泵对流量的变化适应差，对于流量变化大的管道需要设置变频器等额外设备来调整泵流量。主要应用：适用介质有汽油、柴油、煤油，还有专门设计特殊介质中使用的潜油泵，如100%甲醇、100%乙醇、超过15%甲醇汽油、异丙醇、乙酸乙酯、甲苯等。GermanyKAYSENimportedvolumepumpoverviewApumpthatdeliversliquidusingchangesintheinternalvolumeofthepumpcylinder.Reciprocatingpump:Areciprocatingpumpisapumpthatusesareciprocatingmotionofapistontodeliverliquid.Thereciprocatingmotionofthepistontransfersenergydirectlyintheformofstaticpressureenergy.Sincetheliquidisincompressible,theliquidcanbesubjectedtoahighpressurewhenthepistonispumpingtheliquid,therebyobtainingahighlift.Rotorpump:Therotorpumpconsistsofastationarypumpcasingandarotatingrotor.Ithasnosuctionvalveanddischargevalve.Thesideofthepumpbodythatisincontactwiththeliquidinthepumpbodydirectlyappliesenergytotheliquidintheformofstaticpressure,andissqueezedbytherotatingrotor.Theactiondischargestheliquidwhileleavingspaceontheothersidetoformalowpressureforcontinuousinhalationoftheliquid.Therotorpumphasahighpressurehead,asmallflowrateandauniformdischarge.Itissuitableforconveyingliquidswithhighviscosityandlubricitybutnosolidparticles.Typesincludegearpumps,screwpumps,vanepumps,flexibleimpellerpumps,Rootspumps,rotarypistonpumps,etc.Amongthem,gearpumpsandscrewpumpsarethemostcommonrotorpumps.mainfeature:●Ithasthesmoothnessoftheoperationofthecentrifugalpump,nonoise(onlythesoundofthemotorisheard),nooilleakage,noneedforauxiliaryequipmentsuchassewagerecoverydeviceandwatercooling;●Ithasthecharacteristicsofhighefficiencyofvolumetricpump,andthedisplacementisconstantwhenthepressurechanges(fixedspeed);●Lowleakagepoint,lowmaintenance,lowmaintenancecostandshortmaintenancetime,butthescrewpumpismainlyusedtotransporthighviscosityoil.Theefficiencyofconveyingthinoilisrelativelylow,andtheoutletpressurecannotbetoohigh,otherwisetheinternalleakagewillincrease.Itaffectsthesafeuseofthepump,andthescrewpumpadaptstothechangeoftheflowrate.Forthepipelinewithlargeflowchange,additionalequipmentsuchasfrequencyconverterisneededtoadjustthepumpflow.mainapplication:Applicablemediumsincludegasoline,diesel,kerosene,andsubmersiblepumpsspeciallydesignedforuseinspecialmedia,suchas100%methanol,100%ethanol,morethan15%methanolgasoline,isopropanol,ethylacetate,toluene,etc.)