| 摘要 |
<p>On the bottom surface of a store for a granular material is arranged a system of air ducts (2) connected at one end with a blower (10) and having at their opposite ends a closing valve (14). The side walls of the ducts are provided with openings (20) enabling air to be let out into the material for drying the same when the valve (14) is closed. When the valve (14) is opened the air flows right through each duct, and the openings (20) are made as ejector openings, whereby the material will be drawn into the duct and thus be conveyed out of the store. </p> |
