PROBLEM TO BE SOLVED: To provide a granule discharge device, such as a grain discharge device, which can maintain conveyance performance regardless of an extended/contracted state of the device.SOLUTION: An iron spiral member 31 is constituted by: a boss part 33 including a hole 32 to which a rotation shaft 27 is slidably inserted a support part 50 supported by the boss part 33 and a spiral body 35 supported by both edges of the support part 50. A resin spiral member 31 is constituted by integrally molding a connection part 34 arranged on both edges of the boss part 33 and a spiral body 35 erected from an outer peripheral face of the boss part 33 and an outer peripheral face of the connection part 34 by a resin or synthetic resin. By contraction of a conveyance cylinder 19, the adjacent spiral members 31 slide in an approaching direction. By extension of the conveyance cylinder 19, the adjacent spiral members 31 slide in a separating direction.SELECTED DRAWING: Figure 17COPYRIGHT: (C)2017,JPO&INPIT【課題】穀粒排出装置などの粉粒体排出装置を、その伸縮状態に拘わらずに搬送能力を維持できるものとし、排出作業の能率を高める。【解決手段】鉄製の螺旋部材(31)は、回転軸(27)が摺動自在に挿入される孔(32)を有したボス部(33)と、このボス部(33)に支持された支持部(50)と、この支持部(50)の両端部に支持された螺旋体(35)から構成される。樹脂製の螺旋部材(31)は、ボス部(33)の両端部に備えられた接続部(34)と、ボス部(33)の外周面と接続部(34)の外周面から起立する螺旋体(35)を、樹脂または合成樹脂によって一体成形して構成される。搬送筒(19)の短縮によって、隣接する螺旋部材(31)が接近する方向へ摺動し、搬送筒(19)の伸長によって、隣接する螺旋部材(31)が離れる方向へ摺動する構成とする。【選択図】 図17
