A PULPING APPARATUS

摘要

The invention relates to a pulping apparatus for the mixing and working a mixture of a waste material and a liquid. The apparatus comprises a container (102) and a rotor (101) which is placed with a rotational axis extending in an axial direction perpendicularly to a container side (106). The rotor comprises a mounting part (108) which is rotational symmetric around the rotational axis of the rotor and which is placed for rotating with an axial spacing to the container side. The pulping apparatus further comprises a protective collar (500) arranged on the container side so as to radially surround the mounting part. The protective collar may be placed with a spacing to the mounting part of the rotor which is smaller than the axial spacing between the mounting part and the container side and may be made of a wear resistant material,