Grain Cleaning Column

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a machine for cleaning seeds from other substances with different aerodynamic properties. The pneumatic column produced in the USSR has a ventilator, a working air duct, and a settling chamber. The working elements of the grain cleaning column are set in motion by an electric engine with a power of 4.5 kilowatts. In the working duct a grid is placed at a 30° angle. The cleaned grain material is moved to this grid. There, an air current blowing on the grid from below carries off light impurities and dust to the settling chamber. The cleaned seeds roll down the grid into an outlet and through it into bags. The productivity of the grain cleaning column is 2–4 tons per hour.

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