| 摘要 |
The agitator apparatus of this invention is designed primarily for use in mixing suspension liquids, such as suspension fertilizers and feeds, and comprises an agitator having a shaft with a first helicoid layer surrounding the shaft, and a second unsymmetrical helicoid layer, pitched greater than and opposite to the first, mounted around the periphery of the first helicoid layer. Means are provided for rotatably mounting the agitator vertically disposed in the material to be mixed, the material being contained in a tank having a diameter substantially greater than the diameter of the agitator, and for rotating the shaft in a direction such that the first helicoid layer produces a movement of the material in the downward direction, and the second helicoid layer produces a movement of the material in the upward direction.
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