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Manual de-hulling of different grains has been a time-consuming and tedious operation. From locally available and low cost motorized grain de-huller was therefore developed, fabricated and evaluated on different grains. The de-hulling operation of the machine is achieving by combination of abrasive and impact forces. The machine consists of a hopper, a de-hulling unit consisting of a shaft with Beater arrangement on it and which rub the grains against cylinder and grain to grains, an outlet for collection of de-hulled and a frame made of rectangular pipe mild steel. Rice, wheat, Oat and barley were the grains used for evaluating the performance of machine. Besides de-hulling operation the machine also tested on splitting of di-cotyledon such as bean, pea and lentil. The average de-hulling Capacity and efficiencies of the machine were 215 kg /hr and 86.22 %, 243 kg/hr and 91.01 %, 204 kg/hr and 90.94 %, and 282 kg/hr and 97.87%, on rice, wheat and barley oat grains respectively.
Nadew et al. (Thu,) studied this question.