STATIONARY DISC, ROTATING DISC AND MILL ASSEMBLY FOR REDUCING MACHINES

摘要

A reducing machine having an air cooled cutting discs is disclosed. The air cooled discs have cutting surfaces on both sides. The cutting surfaces have edges which are sharpened for cutting input material when the cutting surface is facing the cutting surface of the opposed disc. When the cutting surface of the stationary disc is facing the housing, the cutting surface acts as a heat sink to air cool the stationary disc and the mill assembly in general. Air inlets in the housing lid permit air to flow over the cooling surface. A damper restricts air flow over the air cooling surface to control the temperature of the reducing machine, such as during start up.

主权项

1. A disc mill assembly of a reducing apparatus having a fan, said disc mill assembly comprising:
a rotating disc having a rotating cutting surface; a stationary disc having a stationary cutting surface on a first side for operative interaction with the rotating cutting surface of the opposed rotating disc, and, a second side having an air cooling surface in thermal contact with the stationary cutting surface; a housing lid having air inlets on an external wall; an attaching mechanism for operatively attaching the stationary disc to the housing lid with the air cooling surface facing the air inlets and axially separated therefrom to permit air flow between said housing and the cooling surface; wherein, during operation, the fan draws air from the air inlets, between the housing and the air cooling surface to cool the stationary disc.