| 摘要 |
Screw press 1 for the pressing of fibrous material, in particular waste paper and cardboard, with a pressing screw 3 which is floatingly mounted and consists of a cylindrical conveying part 4 which rotates in an open conveying trough and of an adjoining, conical pressing part 5 which runs in a nozzle 6 with a small circumferential gap 10 with respect to the latter. The pressing part 5 is provided with a screw thread 16 which terminates in a ball-shaped end 21. The screw thread 16 is provided with a conveying surface 17 which encloses an obtuse angle 19 with the axis 18 of the pressing screw 3. The nozzle 6 is provided with axial lands 30 and grooves 23 in a front, conically tapering region 12 as seen the conveying direction 11 adjoining which region is a slightly widening outlet region 13 through whose outlet orifice 14 the material being pressed passes between the jaws 37, 37' of a pressing clamp 32 and is dispensed therefrom as a pressed article 2. The grooves 23 become gradually deeper in the direction of rotation 33 of the pressing part 5, are very flat with respect to their width 24 and end with steeper curvature 34 in strip-off edges 35, which form an obtuse edge angle 36 with the inner wall 31. <IMAGE> |
