Patent ID: 6402437
Filing Date: 2002-06-11
Classification: B65G

Abstract:
Bypass device (10, 30) for conveying a powder material in a hyperdense phase and connected to an upstream conveyor (T1) and a downstream conveyor (T2), comprising at least upstream, intermediate and downstream caissons:the upstream caisson (S1) comprising a lower duct (S1.1) supplied with gas at pressure P1 and an upper duct (T1.2) comprising a column (C1), connected at one end to an upper duct (T1.2) of he upstream conveyor (T1) and at the other end to an upper duct (S3.2) of the intermediate caisson (S3); at least one said intermediate caisson (S3), having a lower duct (S3.1) supplied with gas at pressure P3 and an upper duct (S3.2) connected at a first end to the upper duct (S1.2) of the upstream caisson (S1), and connected through a second end to an upper duct (S2.2) in the downstream caisson (S2); the downstream caisson (S2) comprising a lower duct (S2.1) supplied with gas at pressure P2 and an upper duct (S2.2) comprising a column (C2) connected at one end to the upper duct (S3.2) of the intermediate caisson (S3) and at another end to an upper duct (T2.2) of the downstream conveyor (T2).