Apparatus for comminuting or grinding fibrous material, in particular drum refiner

摘要

The invention relates to an apparatus for comminuting or grinding in particular wet fibrous material or fibrous material mixed with water, preferably chippings, in particular a drum refiner having a motor-driven rotor having at least two surfaces having comminution or grinding elements and inclined with respect to the rotor axis or positioned normally with respect to the latter, expediently surfaces of revolution, in particular frustoconical surfaces having a diameter decreasing away from the at least one material feed means, and a preferably horizontal rotating shaft and a housing which receives the rotor and has corresponding inner wall (walls) and counter comminution or grinding surface(s) arranged thereupon, the at least one material feed, in particular directed approximately radially with respect to the rotor axis or approximately tangentially with respect to the rotor or housing casing, being provided approximately in the centre of the said housing, and, on the casing of the rotor and, correspondingly, on the inner wall of the housing, the comminution or grinding surfaces extend, on both sides, away from the at least one material feed means, on the inclined or approximately normally positioned surfaces, preferably surfaces of revolution, in particular frustoconical surfaces having diameters decreasing away from the at least one material feed means, and the comminuting or grinding surfaces enclosing, on both sides, together with the rotor axis, an angle which is open towards the end of the rotor. The invention is characterised primarily in that, between the material feed means and the comminuting or grinding surfaces ... with increasing ... Original abstract incomplete. <IMAGE>