| 摘要 |
<p>The conveying worm (3) is driven by a fan belt guided around a pulley (5) directly attached to the worm element (3) and around a pulley located at the shaft driving the blade. The power transmission can be performed by a ring either positioned between two separate outer pipes, attached to the worm (3), or designed as a tappet. Sealing flaps are positioned laterally in order to close the gap between the outer pipes.</p> |
