| 摘要 |
PURPOSE:To prevent sticking and growth of a material to be kneaded by providing double coil-shaped screws which rotate respectively, independently on a concentrical shaft. CONSTITUTION:Shafts 2A, 2B are attached at both ends of an inner coil-shaped screw 1 having a small diameter in a horizontal direction, and an outside coil- shaped screw 3 is disposed by reversing the twisting direction on the centrical shaft as the screw 1. Hollow shafts 4A, 4B fitted externally to the shafts 2A, 2B are attached at both ends of said screw. The shafts 4A, 4B are supported by bearings 5A, 5B and the shafts 2A, 2B are supported by bearings 6A, 6B. Since the screws 1, 3 are so constituted as to have no central axes, the sticking and growth of the material to be kneaded are decreased and the required driving power of the kneader is decreased correspondingly. A good kneading effect is obtainable irrespectively of the characteristic such as softness and hardness of the material to be kneaded. |
