| 摘要 |
The equipment is used for conserving grains and pushing the grains out from a grains box with isolating exterior air from the grains box. Three step outlets are installed at the lower part of a drains storage. The upper and the lower outlet are made to be closed, the middle outlet being made to be closed, and next, the upper and the lower outlet being made to be opened, so that the grains between the two outlets can be pushed out with isolating exterior air from the grains box. The equipment includes levers, rods (2',3',4') for closing, rods (2,3,4) for opening, and springs.
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