Study on the Rubber-roll rice huller. (3)

On the effect of hulling capacity by Size of Rubber-roll diameter and rate of circuit speed of Rubber-roll

Abstract

1. According to this experiment, large diameter roll was higher than small one in hulling capacity.
2. In proportion to the roll diameter increase as being with burden the difference of necessary horse-power increase.
3. About the hulling quantity of unhulled rice large roll is more efficient than small one every hour.
4. From the above result, the practical gum-roll diameter in the highest efficiency is supposed to be 61/2 inches or so in minimum, and 91/2 inches or so in maximum.
5. Accordance with the increase of the rate of circuit speed, the hulling power increase, but does not rise by the same increasing rate.
6. As to the relation of horse-power, the greater the rate of circuit speed is, the greater the needed horse-power is.
7. The hulling quantity of unhulled rice every hour is closely connected with rate of hulling and increase the rate of circuit speed.
8. The quality of unhulled rice is in the hight condition is the 30-35% rate, though the skin hulling and carbon adhesion, crushing rice quantity are increased by increasing of rate of circuit speed.