Patent ID: 8657221

Claim:
A roller mill structure configured to discharge fine particles obtained by milling a material to be milled, which is loaded in a mill body, from a plurality of fine particle exits formed on the top of the mill body so as to be separated in the circumferential direction to the outside by air current conveyance, said roller mill structure comprising: a table configured to rotate inside the mill body; a plurality of rollers configured to rotate on the table and mill the material to be milled; and a rotary classifier disposed directly upstream of the plurality of fine particle exits, wherein a plurality of rectifying devices for partly narrowing a cross-sectional area of a flow channel are provided inside the rotary classifier, at a midpoint of the flow channel for fine particle current flowing into the interior of the rotary classifier and proceeding toward the plurality of fine particle exits, wherein each of the plurality of rectifying devices is rotated individually, and wherein the plurality of rectifying devices are configured with a plurality of panel-shaped damper members which pivot about a revolving shaft extending in a vertical direction, supported on a side wall side of the rotary classifier, so as to adjust the cross-sectional area of the flow channel.