| 摘要 |
1. The dynamic seal for a large rotary drum, in particular for a sugar drier, at the contact point of the rotary drum with the stationary front closing wall, whereas one of those elements is fitted with a contact sealing ring, consisting in that it has a sealing strip (5) with a multiplayer brush (6) made of elastic bristle, which is linked with the other of the cooperating elements (3) and whose shape is adjusted to the contact ring (2), the sealing brush (6) being flanked by a hermetic shield (8) for at least half of its height on the side of the hair seat strip (7).<IMAGE>
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