UNIVERSAL SIZING CLASSIFIER Russian patent published in 2011 - IPC B07C5/00 B07B1/00 

FIELD: process engineering.

SUBSTANCE: invention relates to industrial and agricultural machine building, namely, to sizing classifier. Proposed classifier consists of top and bottom sheets fitted in frame guides to displace therein, each having lines of holes. Triangular crimps are secured to top sheet outer surface between said lines of holes across the flow of processed material. Top sheet holes are arranged vertically relative to sheet surface. Pressure mechanism is made up of tube. Rubbish removal cutouts are made along the length of tube bottom part. Said tube accommodates locking mechanisms, each being furnished with hold-down tools and balls. Said hold-down tool is made up of spring. Balls are designed to perform limited motion insides the tube. Limiting plate is secured to hold-down tool edges. Tube bottom part wall has lower cutout to allow hold-down tool to vertically move therein. Spring is secured to tube bottom part outer surface, which represents a spring plate with its each end provided with rolling part fitted therein. Detachable frame with louvre mechanism and detachable louvre plates are arranged below hold-down tool. Detachable dividers made up of ribs are arranged on top sheet surface.

EFFECT: tight fit between top and bottom sheets, optimum selection of hole sizes to add to quality of classification.