Studies on the Rubber-Roll Rice Hullers. (13)

Relation of Cause-Effect among Hulling Types, Hulling Actions and the Break-Down Form of Husks

Abstract

Systemanizing the mutural relation among hulling types, hulling actions and the break-down type of husks, the following are given;
Hulling type
Classification Hulling actions
Break-down form of husks
1. Mortar type{Friction action. Rub-rolling action. Wear and crack form Irregular twist and tear form.
Compression action. Cross-wide crack form.
Shearing action. Shearing longitudinal split form.
Others. Shapeless fragment form.
2. Impulsion type{Impulsion action. Original form and edge cutting form.
Friction action. Wear and crack form.
3. Roll type{Friction action. Wear and crack form. Longitudinal partion form.
Compression action. Cross-wide crack form.
Pull action. Lateral long cutting form.
Rub-rolling action. Irregular twist and tear form.
Pressing out action. Openning form.
Others. Shapeless fragments.