PROBLEM TO BE SOLVED: To excellently convey a material to be treated without inducing complication of installation accuracies of electric blower, etc., even when the supply direction of sending air is changed to any side of a convey duct side and a discharge duct side.SOLUTION: A granule feeder comprises a supply route for conveying a material to be conveyed by air transportation and a discharge route for conveying the material to be conveyed by air transportation separately from the supply route and is equipped with a branched route for selectively sending conveying air supplied from an electric blower 40 for blowing to the supply route and the discharge route. The cross-section area of the branched route is larger than those of the supply route and the discharge route.COPYRIGHT: (C)2010,JPO&INPIT【課題】電動ブロアなどの取付精度の煩雑さを招くことなく、搬送ダクト側と排出ダクト側との何れの側に搬送風の供給方向を切り換えた場合にも良好な被処理物搬送が行えるようにする。【解決手段】被搬送物を風力搬送によって搬送する供給経路と、その供給経路とは別に被搬送物を風力搬送によって搬送する排出経路とを備えるとともに、起風用の電動ブロア40から供給される搬送風を供給経路と排出経路とに選択して送り込む分岐経路を備え、分岐経路の断面積を供給経路及び排出経路の断面積よりも大きくした。【選択図】図14
