| 摘要 |
An agitator for use on an agitator shaft having an axis of rotation. The agitator has a blade mount configured and dimensioned to receive the agitator shaft and being further configured and dimensioned so as to hold a plurality of agitator blades radially with respect to the axis of rotation. Each agitator blade has a plurality of segments, including an upper segment relative to the axis of rotation and a lower segment relative to the axis of rotation. The segments are inclined at an acute angle relative to the axis of rotation in the direction of rotation, wherein the acute angle changes continuously or stepwise from about 25° at the upper segment to about 65° at the lower segment.
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