Key features of the GEHO hydraulic driven piston pumpsFor highly concentrated slurries, sludges and pastes

Key features and benefits of the GEHO hydraulic driven piston pumps

Initiator: hydraulic cylinder position measurement• Ensuresfulluseofstrokelength,• allowsforelectronicmonitoring• andsoftstopandstart-up due to sensors located at the end ofsuctionanddischargestroke.

Linear transducer: hydraulic cylinder position measurementAllowsathighspeedasoftstopandstart-up–duetoaslenderbarmountedinthepistonrod.

Hydraulic cylinder piston sealNoleakage/higherefficiency,accuratecontrolatlowcapacity–duetouseofstandardhydraulicsealsbecauseofabsenceofboreholes.

Sludge cylinder liner and pistonLongwearlifeofcylinders–dueto0,4mmchromeplating.

Reducedwear,energyconsumptionandlowestfrictionlosses–duetohardchromeplatedandprecisionmachinedliner,allowsforflexiblelipsealandguideringdesign.

Option 1: DHC

Transfer tube

Type SR1Highvolumetricefficiency–thetubenozzlemayslideand provide sealing againstthewearplate through the slurrypressure.

Type SR2+3Automaticwearcompensation/lessmainte-nance.Thenozzleismountedflexibly.Theswivelcylinderismountedatanangletomaintainsealing.Longtermreliability-theleverismountedonataperedpolygontoprovideaclearance-freefitwithoutmechanicallooseness.

Cone valves• Reducedmaintenancecosts–duetovalve andvalveseatreplacementwithoutdisconnecting piping,hydraulichosesormovingthepump.• Reducedpressurepulsation-duetothevalve openingandclosingsequence,preventsback flowfromdischargetosuction.• Nooilcontamination–duetostuffingbox betweensludgeandhydrauliccylinder.• Quickmaintenance–duetohydraulicvalve seatrelease.

Option 2: DHT

PLC controlSupervisoryPLCcontrolpanelwithtouchscreen• Remotecontrol• Maintenancesupportwithsignalrecording• Easypumpcontrolwithvisualizationofpumpcomponents

GEHO hydraulic power pack

• Easypumpflowadjustmentandcontrolledstrokereversal throughuseofaxialpiston/swashplatehydraulicoilpump.• Longhydrauliccomponentlifeasaresultofhydraulic pressurelimitedtoapprox.250baranduseofoilfilters onallreturnlines.• Reputablecomponentsuppliersonlywithworldwide services.• Designedforsoftstart/stopreducingpipelinevibrations andnoise.

GEHO screw feeder seal

• Screwfeederforhighviscoussludges.• Flexiblemountedmechanicalsealfor ultimatelifetimewithoutsludgeleakage.

GEHO system components

• Non-returnvalvesforDHTpumps.• Levelcontrolledairoverslurrypulsationdampenervessel, includingautomaticslurrylevelcontrolsystem.• Intakehopperswithlevelmeasurement.• Hydraulicallyoperatedswitch-overS-tubeforremoteswitch overfromonetotheotherpipeline.• Pumprelatedsystemsupport.

General features

• Designedforheavyduty24hrs/dayservice inindustrialenvironments.• Electronicstrokecontrol.• 0,4mmhardchromeslurrycylinderliners.• Optional:VZ'nearlypulsationfree'system.

• Pistonswithcupsealandguidering.• Automaticgreasesystem.• PLCcontrolled.• Softstart/stopduringswitchover.

GEHO DHC pump

GEHODHCpump:hydraulicdrivenpistonpumpwithconevalves.Varietyofvalvedesignsanddifferentmetalsandelastomersavailable.

GEHO DHT pump

GEHODHTpump:hydraulicdrivenpistonpumpwithtransfertube.Avarietyofmaterialselectionsfornozzleandwearplateavailable.

Weir Minerals Netherlands b.v.

Tel: +31(0)773895200 Fax:+31(0)773824844 Email:weir@weirminerals.com www.weirminerals.com

Copyright © Weir Minerals Netherlands b.v. 2005

P.O.Box249,5900AEVenlo,theNetherlandsEgtenrayseweg9,NL-5928PHVenlo 4495RegistrationNo.:12032525

RSG90,Denmark:tubereactorfeed,PVCrecycling

TarongPowerPlant,Australia:flyashdisposal

Kali+Salz,Germany:minebackfilling,brineandflyashes

Northwich,UK:mineclosure,corrosiveflyashesandcement

RWZIDordrecht,theNetherlands:sewagesludgetransport

Tochigi(Utsunomiya),Japan:sewagesludgetransfer

Hyougo,Japan:sewagesludgetransfer

OCIWyoming,USA:minebackfilling

Typical references