ROLL CRUSHER OF COOLER APPARATUS

Provided is a roll crusher of a cooler apparatus, the roll crusher being capable of leveling out temporal changes in the roll load. A roll crusher (15) of a cooler apparatus (1) includes a plurality of load-reducing rolls (15a and 15b). The load-reducing rolls (15a and 15b) are arranged side by side in a conveying direction such that a gap (S1) is formed therebetween, and are rotated about respective rotational axes (L1 and L2) by corresponding rotating units to crush cement. The load-reducing rolls (15a and 15b) include a plurality of crushing rings (22 and 23) and a plurality of crushing rings (32 and 33), respectively. Crushing teeth (24 and 27) are formed on outer peripheral surfaces of the crushing rings (22 and 23) at a regular pitch p1, and crushing teeth (34 and 35) are formed on outer peripheral surfaces of the crushing rings (32 and 33) at a regular pitch p2. The crushing teeth (27 and 35) are arranged such that they are shifted relative to the adjacent crushing teeth (24 and 34) in a circumferential direction. (Figure 3)