WOHWAWeigh Belt Feeders (blending and reclaim) forgravimetricblending/loadoutofbulkmaterials.

Features/Benefits• Extremely robust construction • Hot-dip galvanized • Modular design • Manual or electric slide gate for repair purposes • Automatic zero setting with electric slide gate • Automatic belt tensioning device • High blending and measure- ment accuracy • Pre-adjusted at factory • Simple and fast re-adjust- ment with supplied test weight • Legal-for-Trade (reclaim weigh belt feeders)

Over50yearsago,WOHWAdevelopedthefirstblendingandreclaimweighbeltfeed-ers.Allcomponentsandsoftwareforthemodulardesignedweighingsystemare producedin-houseatourfactory.The modulardesignoftheWOHWAblendingandreclaimweighbeltfeedersallowsanindividualadaptationtoon-siteconditionswhileusingstandardcomponents.

EachblendingdevicecanbeequippedwitheitheramanualWOHWAshut-offorsealedgateoranelectricslidegate.Anelectricslidegateallowsautomaticzero-settingofthebeltscale.

Therobustweighbeltfeederscanbe suppliedwithbeltwidthsfrom16inches(400mm)to56inches(1,400mm)tomeetallapplication-specificrequirementsinrespectofflowrate,productandflowcharacteristics.

Allstandardcomponentsarecutonourownlasercuttingmachineandthenhot-dipgalvanized.Theweighbeltfeederscanbesuppliedwithtroughedorflatbelts.Thewell-designedconstructionprotectsthescalefromdetrimentalinfluencesthatwoulddisturbthehighaccuracyweighing.

ReclaimWeighBeltFeederforloadout

*TheDigitalTachometerandtheWeighStationcanbeconnectedtoaWOHWAWeighingTerminal.

WeighStationwithLoadCell andTestWeightsupport

DigitalTachometer

Chute

Eachweighbeltfeedercanbeadaptedinlength and width to meet the customers’ specificrequirements.Priortocommence-mentofmanufacturing,plansinPDForDWGformatswillbesubmittedtothecustomerforfinalapproval.

Connectingflangeandchutecanbeindivid-uallyadaptedtoeachcustomerapplication. Theweighbeltfeederisequippedwithaslip-ongeardrive,andthemotorpowerratingisoptimallyselectedforanyspecifiedblending/reclaimrate(specialmotorver-sionsalsoavailable).

Additionally,severaloptionsareavailable,suchasdustcovers,wear-resistantlining,watergutters,emergency-pullcords, sheetcoverforreversepulley, frequencyconverters,etc.All sensorsarenon-contacting.

WOHWAweighbeltfeederscan easilybecombinedwithother WOHWAcomponents.

Quality, Continuity, Variability

Slide Gate Dependingupontheapplication,themanualemergencyshut-offgates,types09and99,thepingate,type89,orthedouble-flangesealedgate,type02,maybeusedasshut-offgates.TheWOHWAsealedgates,types03und08.1aswellastheslidegates,type01.1,canbesuppliedeitherwithamotororwithahand-wheel.Acombinationofthevariousblending/reclaimfeederswiththeabovelistedgatetypeswithopeningwidthsrangingfrom8x8inches(200x200mm)to40x40inches(1,000x1,000mm),meetsmostflowraterequirements.

Connection Frame Therobustconnectionframebetweenslidegateandbeltfeederpreventsdustanddirtenteringtheslidemechanics.Allslidegatecomponentsarefreelyaccessibleandcanbechangedwithouthavingtoemptythestockpileorsilo.

Feed Chute Thefeedchuteismountedbetweenconnec-tionframeandbeltfeederandallowstheformingofamaterialbedonthebelt.Thefeedchutecanbeadaptedtoanycustomerapplication.

Belt Feeder Availablestandardversions:•Beltwidthsrangingfrom16to55inches (400to1,400mm)•Materialbeddepthadjustabletomax. 16inches(400mm),dependingupon application•Beltfeederlengthsrangingfrom7to 39feet(2to12m).

•Flowratesupto2,500metrict/h (specialsizesuponrequest)

ChuteLinedwith0.39inches(10mm)polyure-thanereducingwearandnoise.

Automatic Belt Tensioning Device A constant belt tension increases the weigh-ingaccuracy.

Belt Cleaner Maintenance-free,self-adjustingouterbeltcleanerwithrubberspringelementforeasybeltcleaning.TheV-shapedinnerbeltcleanerpreventsbeltdamagefrommaterialintrudingbetweenbeltandreversepulley.

Belt ScaleEachbeltscaleissuppliedwitharobustdigitaltachometer(wheel)formeasuringthebeltspeed.Sensorandbearingarehermeti-callysealedtopreventcontaminationfromdirt.Standard functions•ZeroSetting•EraseWeight•Date/Time•Printlogforconsecutivenumber,date, timeandweight(onlywithGCU64)•Pre-selectionoftotalweightquantities•PowerFlow/SlowFlowShutoff (onlywithGCU64)•CorrectionFactor•BufferedTotalizer

Re-AdjustmentAllscalesarepre-adjustedatfactoryandcaneasilybere-adjustedonsitewiththesuppliedtestweight.

Set-Up of the WOHWA Weigh Belt Feeder

ReclaimWeighBeltFeederforloadout ProtectivegratingforlowerbeltFront view WOHWAGravimetricBlendingSystem

Feed Chute

SheetCoverfor ReversePulley

ElectricSlideGate Type01.1

Double-FlangeSealedGateType08.1

PinGateType89

ProtectiveGrating forlowerbelt

Connection Frame

BeltTensioningDevice

AutomaticBelt TensioningDevice

WaterGutterMotor

Feed chute with material controller

Chute

Automatic belt tensioning device

Test weight

WOHWA Weigh Belt Feeders (blending and reclaim)

Technical Features •Modular•Bolted•Completelyhot-dipgalvanized•Motorandbearingsmaintenance-free•adaptableflanges•Chute(optional)•Outerandinnerbeltcleaner•Dustcover(optional)•Laggeddrivepulley (optional)•Interfacestodustextractionsystem (optional)•High-resolutionbeltscale•Robustmeasuringwheel (dust-andwater-proof)•WOHWAWeighingTerminal GCU50/GCU64•SerialinterfaceRS422(optional)

•Analoginterface4-20mAor 0-10V(optional)•IntegratedPIDcontroller•OperatorMenu English/German/French (otherlanguagesoptional)•Custom-tailoredsoftware

Connectionofthebeltscalesdirectlyvia RS422/485or,optionally,viaPROFIBUSto:•PCandPLCofWOHWAControlSystem forProcessingPlants,andWOHWA BlendingandLoadoutSystem

Weighing Terminal GCU50The weighing terminal GCU50hasbeende-signedasafieldunitforoutdoorapplications. Itissuitedforawidevarietyofinstallations: atthebeltscale,for

wall-mounting,orforintegrationintoacontrolpanel.

Severalinterfacesoptionscanbeprovidedforconnectingtheterminaltoahostprocessvisualizationandcontrolsystem.

Weighing Terminal GCU64The weighing terminal GCU64 must be usedforareclaimweighbeltfeederifthebeltscaleistobeusedforlegal-for-tradeoperationsorforPIDcontrol.Itcanbeinte-gratedintoprocesscontrolviaaPROFIBUSinterface.

Configuration•Canbeequippedwithupto7serialinter- faces.RS232orRS422/485(twoof whichcanoptionallybesuppliedasTTY currentloopinterfaces)•1Centronicsprinterinterface•32digitalinputsoroutputs (opticallyisolated)•8analoginputsoroutputs•0-10Vor0-20mA/4-20mA

WÖHWA Waagenbau GmbH ÖhringerStr.6·74629Pfedelbach·GERMANYPhone+4979419131-0·Fax+4979419131-28info@woehwa.com·www.woehwa.com