| 摘要 |
The present invention relates to an arrangement in screening apparatuses of the pulp and paper industry, said arrangement comprising a conduit (2) for removing reject formed in a screening process. It is essential that circulation of material is arranged between the reject removal conduit and the interior of the screening apparatus from the removal conduit into the interior of the screening apparatus via a conduit (5) external to the screening apparatus. When such a by-pass flow is arranged for pulp via external circulation, heavy particles in the layer being diluted are allowed to be separated onto the bottom of the reject removal conduit and therethrough e.g. into a separate junk trap (3) .
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