SMALL CHAMBER TYPE DRUM FILTER FOR DEHYDRATING CELLULOSE SUSPENSION

摘要

A cellular drum filter for dewatering suspensions is disclosed, comprising trough means and a filter drum mounted to rotate partially submerged in a liquid suspension in the trough means. Vacuum suction is applied to the surface of the drum from the interior thereof via radial passages communicating preferably with respective axial channels leading to a control head. Each radial passage and each channel has a cross-section whose shape is an arcuate sector of an annulus.