The decanter centrifuge is for continuous separation of 3-phases systems
consisting of two immiscibleliquids and solids.
Stock liquid is brought into the bowl through a centripetal pump.
Solid matter settles into outer larger by the centrifugal force.
The settled sediment is pushed into the drying area at the cone of the bowl
by rotary difference between spiral and bow land discharged from the outlet.
Because of the different gravity of emulsion of liquid phases in the bowl,
the light liquid and the heavy liquid are separated by the baffle at the cylinder
end of the bowl, light liquid flows out from the light liquid outlet through
the centripetal pump and heavy liquid flows out from the heavy liquid outlet.
The drum and scroll conveyor are made of stainless steel and titanium
resisting corrosion. The scroll conveyor was coated with wearable alloy
or welded with alloy plate. Stepless speed regulation for the bowl. Step
or stepless speed regulation for scroll's differential speed. Simple lubrication.
Safety protection: rotation rate detection over, vibration protection,
motor overload and overheat protection, protection for scroll when zero
differential speed occurs. For the highly sticky materials, it can add the
hydraulic differential gear to stabilize. The centrifuge is a specially developed
continuous Solid-Bowl horizontal Scroll Discharge centrifuge for effective
separation of slurries into liquid-solid phases/liquid-liquid-solid phases,
with the application of centrifugal sedimentation principle.
A decanter centrifuge separates solids from one or two liquid phases
in one single continuous process. This is done using centrifugal forces
that can be well beyond 3000 times greater than gravity. When subject to
such forces, the denser solid particles are pressed outwards against
the rotating bowl wall, while the less dense liquid phaseforms a concentric
inner layer. Different dam plates are used to vary the depth of the liquid the
so-called pond as required. The sediment formed by the solid particles
is continuously removed by the screw conveyor, which rotates at a
different speed than the bowl. As a result, the solids are gradually "ploughed"
out of the pond and up the conical "beach". The centrifugal force compacts
the solids and expels the surplus liquid. The dried solids then discharge from
the bowl. The clarified liquid phase or phases overflow the dam plates situated
at the opposite end of the bowl. Baffles within the centrifuge casing direct
the separated phases into the correct flow path and prevent any risk of
coss-contamination. The speed of the screw conveyor may be
automatically adjusted by use of the variable.