The Decanter / Solid Bowl Centrifuge operates on the principle of sedimentation. Often the solids are too fine to be dewatered satisfactorily in the filtering centrifuges. They can be separated in solid bowl centrifuges provided their sedimentation speed in the mother liquid is sufficient. The sinking settling speed which is determined by Particle size, Particle shape, difference in density between solids and liquids as well as their viscosity.
The system is continuous, compact and enclosed while offering versatility, high performance, and low maintenance.
Separation takes place in Horizontal conico / cylindrical bowl with screw conveyor.
The slurry is feed into the bowl through a stationery inlet tube and accelerated by specially design inlet distributor.
Centrifugal force leads to instant sedimentation of the solids on the wall of bowl.
The conveyor, rotating in the same direction as bowl with differential speed, conveys the solids to conical end. The solids are lifted clear of the liquid and centrifugally dewatered before being discharged into the collecting channel.
The clarified liquid flows into the housing through opening in cylindrical end of the bowl.
Simple, rugged construction
Rotor comprising screw conveyor inside conico / cylindrical bowl
Screw conveyor (single flight or multiple flights), with or without hard surfacing
Solids discharge through collecting channel and hard-surfaced scrapers
Drive by electric motor and V-belts with gear box for high strength and reliability
Oil lubrication for gear box and greasing for bearings
Overload protection device
Optional Gas-tight design with gas-sealed labyrinths
Perbunan, viton or PTFE seals
Pressure-tight design with glide ring seals for up to 10 bar
Optional – Centralised lubrication SystemCylindrical vacuum filter