The utility model discloses a sowing barrel with an inner air extractor pulled by a bearing which is mounted on a gas pipe axle connected with an air pump.
本实用新型公开了一种内置气吸式播种滚筒，它由轴承带动转 动。
The air conveyer is provided with an air amount regulator, and includes an air pump and a connected air pipe with opening to the cooling barrel.
该空气输送装置具有气量调节结构；该空气输送装置包括空气泵和与 之相连的空气管，该空气管具有单独的开口通向制冷筒；
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