| 摘要 |
A rotary screen assembly for a pneumatic grain handling device is described which is comprised of a perforated cylindrical screen member rotatably driven by a propeller means which is placed in the airstream of the device. The screen assembly includes a cut-off plate positioned at the bottom inside surface of the screen member for interupting airflow through a portion of the screen member thereby creating a continuous cleaning action of the screen assembly. The screen assembly is particularly useful for preventing abrasive airborne particles from entering into and damaging the blower components.
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