| 摘要 |
A rotating sorter is provided for the removal of minuscule pollutants from fiber material suspensions by means of a symmetrical fixed filter basket disposed in a fixed spiral-shaped housing and in whose interior a generally vertical axle rotates sorter vanes in close proximity to the filter basket. Fiber material suspension to be sorted is delivered to a generally ring-shaped sorting space formed between the filter basket and housing. The direction of flow of fiber material suspension delivered to the filter basket occurs substantially tangentially thereto and generally perpendicular to the rotating axle, and quality material is sorted into the interior of the filter basket. The apparatus of the present invention is distinguished by an inlet nozzle which communicates with the sorting space through a generally vertically disposed slit, and by the sorting space steadily narrowing or tapering from a width equal to the width of the slit and along the axial length of the filter basket beginning at least at a point level with the slit, whereby the tapering of the sorting space occurs in a spiral fashion in the direction of flow of the fiber material suspension along the filter basket. This results in a higher degree of sorting effectiveness, especially in preventing the removal of long fibers with ejected material. |
