Patent ID: 8157196

Claim:
A grinding device of a vertical grinder, comprising: a driving device ( 1 ); a vertical grinding barrel ( 2 ) which is driven by the driving device; a grinding roller ( 3 ); a pressure applying device ( 4 ) acting on the grinding roller ( 3 ), and a material-shaving device ( 9 ); wherein the vertical grinding barrel ( 2 ) includes an upper opening; wherein a running-in surface is composed of the roller surface of the grinding roller and a grinding surface ( 6 ) of the inner lining of the vertical grinding barrel; wherein the grinding surface ( 6 ) of the inner lining of the vertical grinding barrel and the vertical line has an angular separation; and wherein the material-shaving device ( 9 ) includes features that are complementary to the angular separation between the inner lining and the vertical line, and is configured to loosen grinded materials attached to the inner lining and drive the grinded materials towards the upper opening.