| 摘要 |
PURPOSE:To improve the conveyance efficiency of granular body, by forming both upward and downward air passages in a way of superposing a small diametral inward pipe and a large diametral outward pipe for these granules partially on each other inside the casing body hermetically sealed, and feeding air with pressure from the tangential direction of a casing. CONSTITUTION:A small diametral inward pipe 6 for granular body is inserted from one end face 4 of the casing body 1 hermetically sealed. And, a large diametral outward pipe 5 is fitted from the other end face 3, and each end of these pipes 6 and 5 is partially superposed on each other. And, there is provided with an air pressure-feed pipe 2 which charges air from a connecting direction of the casing 1. When air is fed with pressure in an X direction from this air pressure-feed pipe 2, this air goes down spirally as stepping down at an interval D between the casing 1 and the outward pipe 5 and, after being turned over at the end face 4, goes up spirally as stepping up at an interval U between the outward pipe 5 and the inward pipe 6. The granular body is inhaled from an arrow Y direction, then discharged to the outward pipe 5. With this constitution, these granular body is efficiently conveyable.
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