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LWS decanter centrifuge (three-phase separation type)

Operating principle

Once the suspension fed into the centrifuge drum via feed pipe, solid phase of it of higher density will be settled down and attached to wall surface of the rotor drum under effect of centrifuge field. which will be screw pushed to drying area before it's discharged via slag outletthe clarified Iiquid phase of it will be overflowed via the overflow port of the rotor drumhence to realize solid and liquid separation.

LWS is three-phase separation type.

 

LWS Outline drawing

 

 

 

 Main features

Components/parts including drum and screw etc that will be in contact with the feedstock are made of corrosion resistant stainless steelduplex steel or C22 according to the working condition.

u High precision rotary drum(NC machininghigh-precision balance)high separation factor, improved separation efficieney.

u Dual variable frequency common DC bus control, step-less velocity adjustment of drum and screw;

u A variety of lubrication methods: grease lubrication (standard)oil injection lubricationoil and gas Iubrication.

u Fully automatic oil recharging device

u Surface of the spiral vane is sprayed with wear-resistant alloy or welding hard alloy.

u Different differential mechanism is equipped for different working conditionsi.e. cycloid pin, planet gear or hydraulic differential.

u Fully enclosed system satisfying specification of pharma production

u Multiple layers of protection including over-vibration protectioncover opening protectionmotor overload protectiondifferential speed/torque control and switch, bearing temperature detectionscrew pushing torque protectionstatic grounding protection and Iocking protection for maintenance

u N2 protection system and relevant ex-proof measures are equipped to satisfying ex-proof specification

u Can be core part of a waste water treatment system once combined with flocculant dosing system, screw pump, flow meter and other fittings

 

Personal form

 

 

Centrifuga casting of rotor drum

u The rotor drum is made by means of centrifugal casting and solution treatmentwhich means better stability

u Higher strength

u Can be made of various material including 304316L2205C22C276

 

 

 

Screw wear-resistance treatment

u Cemented carbide insert

      Tungsten carbide alloy

      Built-in structure

u Cemonted carbide coated surface

      Tungsten carbide coated

 

 

 

Differential mechanism

u Cycloid pin wheel differential

u Pianetary gear differential

        Larger torque output

        Stable and reliable operation

u Hydraulic differential mechanism

        Better Iow differential output

        Differential stepless adjustable

        Compact structure

 

 

 

Sealing performance

u Shaft seal design

    ensuring effective separation between the working cavity and bearing cavity

u Flexible joint for slag discharge and transfer connection

    Flexible joint or transfer connection for option of installation design

 

Liquid phase to be discharged by centripetal-pump

u Liquid phase will be discharged by centripetal pumpwith liquid level programmable as per process requirements

u Good sealing performance of the whole system

 

Three-phase sparation

u Applicable for solid-Iiquid-liquid separation

u Heavier Iiquid to be discharged by centripetal pump (Liquid level adjustable)

u Lighter Iiquid to be overflowed via overflow port of the rotor drum (liquid level adjustable)

 

 

Technical parameter

u Please refer to the Table above for technical parameters for LWS

u Ratio of length to diameter shown in above Table are generic parameterwhich is subject to adjustment base on working conditions in order to achieve satisfying performance of separation.

 

Explosion-proof and sealing

u Sealing of the whole system

u Shaft seal design

u N2 protection system

u Slag discharge connection/joint

u Explosion proof and separation measures

 (Refer to Application of Ex-proof Technology for detail)