Development of Aonla Shredding cum Stone Extracting Machine

Abstract

A continuous flow, power-operated machine for production of aonla shreds as well as extraction of stone has been designed and developed. The machine consists of a hopper, a tapered roller, a drum chamber with concave sieve, a discharge chute and a power transmission system. The machine was tested at roller speed ranging from 200 to 400 revolutions per minute (RPM). At 330 RPM speed of roller, maximum aonla shreds (97-98%) were recovered with minimal breakage of stone (6-7%). The machine could process 60-70 kg aonla per hour, which is 10 times more than the manual processing. The cost of processing of aonla using the developed machine is just Rs. 159 per tonne as compared to Rs. 833 per tonne for manual extraction.