B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
241/74
B02C 13/26 (2006.01) B02C 13/09 (2006.01)
Patent
CA 1063998
ABSTRACT An impact mill has a rotor with beater bars sweeping on a beating circle, a mill housing, and an impact or grinding mechanism pivotably mounted in the mill housing adjacent the rotor. A cover plate of the housing forms stop means to prevent the mechanism from pivoting too far towards the rotor and to thereby determine a gap between the mechanism and the beating circle, Two shafts extend through the cover plate and are connected at one of their ends to the mechanism, Attachment members e.g. transverse beam uniting the parts of the shafts located outside the cover plate are provided on these parts of the shafts, A hydraulic cylinder-piston unit is connected at one end to the mill housing and at the other end to the attachment members or the transverse beam. This connection is provided with a lost motion corresponding to the amount the mechanism must freely pivot outwardly away from the rotor during use. A wedge or step wedge type insert piece is arranged between the attachment members or the transverse beam and the cover plate. This insert piece is displaceable in order to adjust the size of the gap.
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