| 摘要 |
A device for removing gas and impurities from the molten aluminium is composed of a driving portion, a transmission portion, and an agitating portion. The driving portion has an output shaft while the transmission portion has a transmission shaft such that the axis of the transmission shaft is parallel to the axis of the output shaft, and that the transmission shaft is driven by the output shaft. The agitating portion comprises a plurality of blades, which are driven by the transmission shaft. Each blade has an upper end surface and a lower end surface, which form respectively a predetermined angle with the axis of the transmission shaft. The transmission shaft is provided with an axial hole of a predetermined length. Each blade is provided therein with a channel for expelling the gas contained in the molten aluminium.
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