| 摘要 |
A screening apparatus for grains comprises a housing, wherein a support structure is arranged which is rotatable by means of a main shaft. The support carries a screen drum rotatably mounted upon a planet shaft arranged eccentrically with respect to the main shaft. The support, furthermore, carries vanes engaging a delivery channel for the screened goods. In order to achieve a comparatively small resulting centrifugal force effect upon the material fed to the screen drum, while maintaining optimal peripheral speeds as regards the delivery vanes and the speed of the screen drum, the screen drum is arranged with an eccentricity with respect to the main shaft which is smaller that the greatest radius of the screen drum.
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