| 摘要 |
PURPOSE:To improve the power consumption ratio and filling rate by forming a screw blade non-vertically to an axis at a cross section including the axis of a rotary shaft. CONSTITUTION:A screw blade 1d is linear at a cross section including the axis of a rotary shaft 2 and is non-vertical to the axis by an angle theta. Accordingly, the screw blade 1d applies a component of force in the conveyance direction to a conveyed object, and it generates an effect to decrease the centrifugal force applied to the conveyed object. Thereby, the friction between the conveyed object and a casing is reduced, and the power consumption ratio can be improved. |
