| 摘要 |
Disclosed is a device for reducing the size of paper particles. A housing (12) contains an inlet (15) for receiving material into a flow chamber (22). At least two adjacently spaced particle reduction stages (30, 40, 50) exist, through which material flows from one stage to the other for reducing the particle size of the material. An outlet (16) outputs processed material with reduced particle size. Each particle reduction stage has an impact member that rotates about a central shaft (20) for impacting material into smaller particles. At least one of the stages has a screen (45) located downstream from the impact member of that stage, the screen having perforations through which particles of a sufficiently small size can pass. The impact member of at least this stage has elongated beaters (32, 42, 52) supported on and extending radially from a beater plate (33, 43, 53) mounted to the central shaft. |
