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公开(公告)号：DE2854207A1
公开(公告)日：1980-06-19
申请号：DE2854207
申请日：1978-12-15
Applicant: BASF AG
Inventor： ZETTLER HANS DIETER DIPL ING , SCHNEIDER WOLFGANG DIPL ING DR , BAUER WOLFGANG DIPL ING DR
Abstract: In order, in the case of a short overall length, to increase throughput and/or reduce wear, the discharge zone (A) is 0.5 to 1.5 D long. D is the external diameter of the screws in the feed zone (E). Single or multiple flight screw profiles have pitches (H2) in the discharge zone of between 0.3 and 1 D. The screw circumferential velocities may be 1 to 2.5 m/s.
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