Cleaning and/or grading machine for free-flowing materials

摘要

A cleaning and/or grading machine for free-flowing materials comprises at least one cleaning and/or grading unit accommodated in a hollow housing which is secured on a frame and connected with an aspirating chamber; a batching device located in the upper part of said housing; an air separating channel installed in the same housing and comprising a thrower of the free-flowing material; a rotor installed in said housing and comprising a screen drum secured thereon, said drum having a material distributor in the upper part; said screen drum is built up of a number of consecutively arranged sections each consisting of a screen in the form of a body of revolution and secured on supporting rings; the sections are interconnected by equidistant tie rods extending through said supporting rings which makes it possible to assemble these sections into standardized screen drums while the cleaners installed at the external side of said drum opposite to each other relative to the rotation axis of said drum ensure efficient cleaning of the holes of said screen.