Study on Rubber-roll rice huller (7)

The effect to hulling power by hardness of Rubber-roll used for hulling

Abstract

1) This experiment was committed to certify how to effect to hulling power and durability by hardness of Rubber-roll.
2) The relation of hardness of Rubber-roll and hulling power
a) H. P. of Rubber-roll which has hardness of 89-90 degree is needed little more, the rate of hulling is hulling short, the efficency of hulling is high.
b) The difference is no found at carbon adhesion and hulling degree by Rubber-roll which has hardness of 85 degree. The growth of crushing rice is out of question.
3) The relation of hardness of Rubber-roll and durability of Rubber-roll.
a) In this experiment the hardness of Rubber-roll which has 85 degree or so is strongest, and others are not stronger.
b) Vibration and noise of hulling operation are less and pleasant by the Rubber-roll which has 85 degree or so.
They are more violent in 99 degree and most violent and not useful in 95 degree.