ES380329A1 - Improvements relating to a roller mill - Google Patents

Abstract

Improvements in the construction of roller mills, particularly an elastic roller grinding mill and comprising a grinding part and an air separation part, provided on top of the latter, and in which the grinding part comprises a bearing plate, as well as rolling bodies movable with respect to the bearing plate, in particular elastic rollers, in whose mill there is also provided, in the vicinity of the outer contour of the bearing plate, a crown with fixed blades, to direct an air current that transports the milled product from the contour of the bearing plate to the screening chamber of the air separation part, which, in addition, comprises a rotating vane wheel, the coarse particles falling back out of the screening chamber classifier, again driven to the grinding part, while the fine particles are entrained with the air stream out of the chamber classifying screening area, characterized in that the crushing mill comprises, on the one hand, between the grinding part and the air separation part, another fixed fin crown to direct in the classifying screening chamber an air stream loaded with the product ground and, on the other hand, a funnel mounted under this crown of fixed fins and which leads the coarse particles back to the center of the bearing plate. (Machine-translation by Google Translate, not legally binding)