CPC B02C 4/40 (2013.01) [B02C 4/02 (2013.01)] | 22 Claims |
1. A scraper device for a roller crusher, comprising:
a rotatable multi head scraper unit having at least two scrapers arranged tangentially about the rotatable multi head scraper unit at a respective radial distance from a rotational axis of the rotatable multi head scraper unit;
a rotation actuator arranged to selectively rotate the rotatable multi head scraper unit to allow operative use of one of the at least two scrapers at a time; and
at least one brake arrangement configured to prevent and/or restrict rotation of the rotatable multi head scraper unit during operation of the one of the at least two scrapers.
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