Incoming material falls onto a shoe, that oscillates under the function of a vibro motor, grain is distributed evenly on the feeding shoe which introduces a thin horizontal flow of material into the machine chamber. Under the function of air and different specific gravity of various materials, the separation of husks and dust is separated into a separate chamber which can be adjusted with a retarding plate. This separated low-density material together with the recycled air flows into another separator while the particles fall in a screw conveyor and are discharged. The cleaned air is then recycled by a fan and back into the aspiration channel via a return air channel. The heavy grain material falls down and is discharged via a finger value which opens due to the gravity of material flow. An adjustable wall plate mounted inside the chamber allows the airflow stream flow rate to be controlled to obtain different degrees of separation.
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