ABRASION-RESISTANT CRUSHER OF GRINDER

摘要

PURPOSE: A crusher is provided to extend the life span of a grinding roller by minimizing the eccentric abrasion of the grinding roller, to improve the rate of crushing coal, to save time and cost caused by replacing a grinding roller and to improve the operation reliability of the crusher. CONSTITUTION: A crusher is comprised of a transfer pipe(10), a bowl(20), a grinding roller(40) and so on. The diameter rate of an inner diameter and an outer diameter of grinding roller(40) to reduce the eccentric abrasion, and the rate of the speed of revolution between the grinding roller and a bowl(20) are equalized by putting the rotational center of the grinding roller on the shaft of the rotational center of the bowl(20). The eccentric abrasion is prevented by dispersing a concentrative load generated when the grinding roller rotates by flatly designing the slant part of an outer circumference into a face where the grinding roller is contacted with the bowl, having an interval.