| 摘要 |
Within a machine housing 10 a paddle assembly 33 is mounted to a first shaft 30 and is rotatable within a stationary cylindrical screen 14. An auger screw 23 provided on a second shaft is rotatable to feed material to be sifted into a first end of the cylindrical screen 14. The second shaft of the auger screw 23 is hollow and the first shaft 30, on which the paddle assembly 33 is mounted, extends co-axially through the hollow second shaft, preferably in cantilever manner. Drive means 28,29,35,36,39 operable to rotate the first and second shafts is provided at a common end of the apparatus. In an alternative version the shafts may be provided the opposite way round such that the first shaft, on which the paddle assembly is mounted, is hollow and the second shaft of the auger screw extends through the hollow first shaft. |
