Author(s):

Sivala Kumar, N Ramesh and A Devender

Abstract: The cashewnut processing factories are located in rural and backward areas in India. The processing of cashewnuts in these factories are manual and labour-intensive, tedious, time consuming which leads to drudgery in the system. The cashewnut is an irregular shaped nut and causes difficulty for any type of mechanization. An attempt was made to develop a cashewnut grader for roasted cashewnuts for subsequent mechanical shelling operation. In general, the feed rate and the screen efficiency were increased with the speed of the grader pulley and angle of inclination of the screen. The feed rate increased gradually from 7.2 kg/h to 60 kg/h for the change in the slope of the screen from 9° to 12° at 70 rpm. The maximum feed rate of 36 kg/h was observed when the speed of the grader pulley was increased from 80 to 90 rpm for 11° angle of inclination of the screen.

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