| 摘要 |
An apparatus for pressure tight discharge of refiner material, such as cellulosic material by using a screw which feeds the material between a screw shaft and screw housing whereby a pressure tight material plug is formed at an outlet of the screw housing. The screw is, at the out end, provided with a flange which together with a throttle journalled around the flange forms an adjustable outlet opening through which material is fed out by the screw while the material forms a pressure tight material plug. |
