| 摘要 |
A grain cleaner for a bucket elevator having a downflow grain passage opening into an upflow air passage connected to a blower. A valve is positioned in the opening so that in a first position it restricts the flow of air with the grain through the opening so that the grain can be cleaned by an airstream created by the blower and in a second position leaves the opening unrestricted so that a large volume of grain can flow freely through the grain passage and lower portion of the air passage.
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