| 摘要 |
<p>Screen for a paper pulp refiner and classifier of the kind consisting of the juxtaposition of members with a U cross-section comprising a flat bottom (2) provided with perforations and two side walls (3), characterised in that the members (1) with a U cross-section are arranged so that they form a wall especially of cylindrical revolution, provided with slots or holes coupled or otherwise with grooves and obstacles. <IMAGE></p> |
