Beater arm, for impact pulverizer rotor, has curved offset with rotational point of smaller radius of curve of contact faces located a distance away from rotational point of larger radius of curve of support face

摘要

The beater arm (3) for impact pulverizer rotors has an offset (4) on its end form-fitting in circumferential slots (2) in the rotor. The offset is curved in shape and the rotational point (8) of the smaller radius (R1) of the curve of the contact faces (7,7') is located at a distance (X) away from the rotational point (9) of the larger radius (R2) of the curve of the support face (12) in the direction of the beating circle of the arm. The two rotational points extending in a line approximately parallel to the beating face (11), whereby the contact faces lie at an obtuse angle in relation to each other in an extension of the smaller curve.