Deepa Screw Classifier
Deepa Spiral Classifier is an ideal machine to wash and separate silt and other
impurities as well as
dewatering sand after wash. It combines both the functions of washing and dewatering and is very
effective.
It consists of a slow rotating and gently elevating spiral screw in a tub with an inclined trough
and
its function is simple. Water is sprayed under pressure on to sand fines in the screen and the sand
slurry
is gently let into the classifier tub full of water without causing any turbulence. The silt and other
impurities get floated and discharged over weirs. The coarser particles i.e. sand settle at the bottom.
The
double start screw rotating at slow speed rakes up the settled sand particles and conveys up through the
inclined trough. This is a continuous process and as the washed sand moves up the excess water in the
sand
mix is drained back to the tub and at the discharge point a relatively water free sand is obtained.
