APPARATUS FOR CLEANING LOOSE MATERIAL Russian patent published in 1999 - IPC

FIELD: equipment for pneumatically separating loose materials, possibly in agriculture and forestry for cleaning seeds. SUBSTANCE: apparatus includes receiving hopper with vane feeder arranged in it and rotary damper engaging with feeder, vertical pneumatic duct connected with receiving hopper by means of charging window, receivers for separated fractions. Apparatus also includes shutter mounted in hopper opposite rotary damper. Rotary damper is secured by cantilever fashion at side of pneumatic duct and rests upon eccentric washer mounted under it. Efficiency of cleaning process is increased by 3-5%. EFFECT: enhanced efficiency of cleaning. 1 dwg