Importance

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Abstract

In a screw conveyor the conveyor screw is arranged in a casing where there is at least one support fastened to the casing between the ends of the conveyor screw, the conveyor screw being mounted in the support via a bearing which is sealed by a seal. Included in the seal there are two sealing devices which are unrotatably but axially displaceably mounted on the screw shaft, and which are urged axially from opposite directions to press with a respective sealing portion against a corresponding sealing portion on the support. The sealing portions are situated radially outside the bearing. Each sealing device at its end facing away from the support engages against a sealing element, which in turn connects to the screw shaft.

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First Claim