| 摘要 |
<p>The device consists of two fluidized bed tables (2, 3) which can vibrate on their support, and can be inclined as desired, allowing a common airflow to pass through. Located over the top end of the upper fluidized bed (2) is an inlet (1) for the granular material, opposite which, at the bottom end, is an outlet (14) for the very light granular fraction. At the top end of the lower fluidized bed (3) are a stone outlet (13) and, at the lower end, an outlet (15) for the heavy granular fraction. In addition, a chute (19) is situated between the fluidized beds (2, 3). An intermediate floor (17), shorter in length than the fluidized bed (2, 3) allows the evacuation and if necessary the regulation of a mixed fraction. In order to be able to remove a mixed fraction, with the easiest possible design, it is envisaged that the fluidized beds (2, 3) are arranged in a sturdy but movable frame (4), operated by a vibratory drive (5) with a vibratory movement directed towards the stone outlet (13) and that the intermediate floor (17) is tilted towards the bottom end of the lower fluidized bed (3).</p> |
