| 摘要 |
A dry air filter and dust collector employing fabric cylinders through which air is drawn from the outside to the inside. The fabric cylinders are tensioned at the bottom and mounted to permit shrinking and stretching of the fabric while maintaining constant tension. At the same time means are provided for applying shaking movements to the bottom of the filter cylinders to remove dust accumulation therefrom. A source of low pressure air for the top of the fabric cylinder may oppose flow of the air to be filtered so that the dust will not be held against the fabric surface thereby.
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