RFEF系列二次分级机RFEFSERIESQUADRATICCLASSIFIERRFEF系列二次分级机，是营口瑞丰粉体设备有限公司采用成熟的分级技术，结合本公司生产配套的RFLM系列细粉立磨分级技术，解决目前普通分级机分级效果差、产量低等问题。本系列二次分级，可分选1.5~30μm，2μm含量可达90%。RFEFseriessecondaryclassifierRFEFSERIESQUADRATICCLASSIFIERRFEFseriessecondaryclassifierisYingkouRuifengpowderequipmentco.,Ltd.Adoptsmatureclassificationtechnology,combinedwiththematchingRFLMseriesfinepowderverticalmillclassificationtechnologyproducedbyourcompany,Tosolvethecurrentordinaryclassifierclassificationeffectispoor,lowoutputandotherproblems.Thisseriescanbedividedinto1.530μm~2μmandcanreach90μm.工作原理进料螺旋输送机将储存于原料仓的粉体物料，用电脑控制以固定的流量进入进料管，而在进入分级机前，粉体物料会与风机的主气流充分混合，充满物料的主气流先进入分级机下部的蜗壳，运用蜗壳结构将进入蜗壳的气流改变运动方向，形成漩涡，在漩涡力的作用下，使进入下壳体的主气流变成螺旋上升气流，在离心力的作用下对粉体物料进行预分级，较粗颗粒粉体会先行分出，没有进入下壳体而从分级机底部落下的粗颗粒粉体，即为分级后的下品。次气流则由下壳体的下方吸入，并且粗粉中再选出剩余的细粉。其余的含更细粉体的气流则被带入后分级区，分级出口装有3个或者多个分级轮的自动分级机进行选粉工作。粉体在此分级区中，收到离心力、流体阻力、以及自身的重力作用下，大于分级轮收束点的粉体则会被送回下壳体，小于收束点的粉体则随着气流带出分级机，风机将气体中的细粉自分级机带出，经脉冲式除尘器收集为成品，部分气体会从设备的排风管中排出进入大气，其余空气则被循环使用作为主气流，以维持整个分级系统可以正常运行。由脉冲式除尘器收集的细粉，及下壳体中的粗粉，会通过气力输送系统，根据其产品细度而运送到指定的不同的成品仓中，成品仓下方放置包装机进行包装。Workingprinciplethefeedscrewconveyerwillstorethepowdermaterialintherawmaterialbin,usethecomputercontroltoenterthefeedtubewiththefixedflowrate,andbeforeenteringtheclassifier,thepowdermaterialwillbefullymixedwiththemainairflowofthefan.Themainairflowfilledwithmaterialsfirstentersthevoluteofthelowerpartoftheclassifier.Thestructureofthevolutechangesthemovementdirectionoftheflowintothevoluteandformsawhirlpool.Undertheactionofthewhirlpoolforce,themainairflowenteringthelowershellbecomesaspiralupwardflow.Undertheactionofcentrifugalforce,thecoarseparticlepowderwillbeseparatedoutfirst,andthecoarseparticlepowderfallingfromthebottomoftheclassifierwithoutenteringthelowershell,thatis,thecoarseparticlepowderaftertheclassification.Thesecondaryairisinhaledfromthebottomofthelowershell,andtheremainingfinepowderisselectedfromthecoarsepowder.Theotherairflowwithfinerpowderwasbroughtintotherearclassificationarea,andtheautomaticclassifierwiththreeormoreclassifyingwheelswasinstalledattheoutletforpowdersorting.Inthisclassificationregion,whenthecentrifugalforce,fluidresistance,anditsowngravityarereceived,thepowderlargerthanthebunchingpointoftheclassifierwheelwillbesentbacktothelowershell,andthepowdersmallerthanthebeampointwillbebroughtoutoftheclassifierwiththeflowofair.Thefantakesthefinepowderinthegasoutoftheclassifier,andthemeridianpulsescrubberiscollectedasthefinishedproduct.Someofthegaswillbedischargedintotheatmospherefromtheexhaustpipeoftheequipment,andtherestoftheairwillberecycledasthemainairflow.Tomaintaintheentiregradingsystemtoworkproperly.Thefinepowdercollectedbythepulsedustcollectorandthecoarsepowderinthelowershellaretransportedtodifferentfinishedproductwarehousesaccordingtothefinenessoftheproductthroughthepneumaticconveyingsystem,andthepackagingmachineisplacedunderthefinishedproductbin.性能优势1.均匀的粒径分布。可根据所要求的收束点，调节控制，保持很窄的粒径分布。2.产品稳定，连续可靠。通过变频调节分级轮转速或调节风阀开度可任意调节产品细度，产品品种的调节方便简单，连续稳定。3.可大规模工业化分级生产，采用强力涡流分级设计，分级叶轮水平放置，多分级轮机构设计，更加适合400-8000目微粉大规模工业化分级生产。4.可设立独立的分级系统，单独使用。适合直连各类磨粉设备（如超细立磨机、球磨机、振动磨、气流磨、冲击磨、搅拌磨等），联合组成闭路连续超细粉体生产系统。5.全套分级系统，均采用PLC触屏智能化控制，可实现实时显示，参数、指标、温度、产量、细度等，并可做到可调可控。由于我公司技术成熟，可实现与RFLM系列超细立磨机**衔接，也可独立成为一套中控系统。Performanceadvantage1.Uniformparticlesizedistribution.Accordingtotherequiredcollectionpoint,thecontrolcanbeadjustedtomaintainanarrowparticlesizedistribution.2.Theproductisstable,continuousandreliable.Theproductfinenesscanbeadjustedarbitrarilybyadjustingthespeedoftheclassifierwheelortheopeningdegreeoftheairvalvebyfrequencyconversion.Theadjustmentoftheproductvarietyisconvenientandsimple,andtheproductiscontinuousandstable.3.Itcanbeusedforlarge-scaleindustrialgradingproduction.Itismoresuitableforlarge-scaleindustrialclassificationproductionof400-8000meshmicro-powderbyusingpowerfuleddycurrentclassificationdesign,horizontalplacementofclassifyingimpeller,anddesignofmulti-classifyingwheelmechanism.4.Aseparategradingsystemcanbesetupforseparateuse.Suitableforallkindsofgrindingequipment(suchassuperfineverticalmill,ballmill,vibrationmill,airflowmill,impactmill,agitationmill,etc.)andcombinetoformclosedcircuitcontinuousultrafinepowderproductionsystem.5.ThewholeclassificationsystemadoptsPLCtouchscreenintelligentcontrol,whichcanrealizereal-timedisplay,parameter,index,temperature,output,finenessandsoon,andcanbeadjustableandcontrollable.Becauseofthematuretechnologyofourcompany,wecanrealizeperfectconnectionwithRFLMseriessuperfineverticalmill,andcanalsobecomeasetofcentralcontrolsystemindependently.