| 摘要 |
In order to remove dust from textile fiber tufts, the tufts are conveyed by an air-penetrable, continuously advancing screening element and a single stream of air is passed a plurality of times through the screening element in order to alternately mix with and become separated from the tufts and the stream is given a net flow in the direction opposite to the direction in which the tufts are being conveyed by the screening element.
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