„Drzewicz” grain cleaners – how do they work?

The working principle is a perforated drum which rotates and separates impurities (straw, corn husks, corn piths, rocks, etc.) allowing the grain to fall through the drum.

Fine impurities (sand, etc.) are separated on a perforated sheet (1,5 mm perforation) located in the bottom part of the cleaner.
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