BREAKING SET OF A DISC MILL Russian patent published in 2006 - IPC B02C7/12 D21D1/30 

FIELD: the invention refers to breaking sets of disc mills.

SUBSTANCE: the breaking set includes discs gathered together of sectors whose working surface consists of a central and periphery ring zones with grooves between knives overlapped on the periphery with dams located on eccentric bows relatively to the centers of the discs with forked knives some of which are shortened, limited with the peripheral ring zone. They are alternated with whole knives passing through the both zones. At that the knives and the radiuses of the dams are directed from the center to the periphery of the disc under an angle to its radius and a number of knives on a unit of length of an arbitrary circumference of the ring zones increases in radial direction to the largest neighboring edge of the disc, the grooves between knives expand from lateral surfaces of the dams - from the side of the central ring zone in the direction towards the center of the disc, and from the side of the peripheral zone in direction to its largest neighboring edge. At that the radial extension of the central and the peripheral ring zones are fulfilled with correlation defined out of given expression.

EFFECT: increases quality of milling, effectiveness , time of cutting edges of knives, life and reduces energy consumption.

2 dwg