AIR-SUCTION TYPE CONVEYANCE DEVICE

To provide an air-suction type conveyance device capable of easily adjusting an intake amount of secondary air, which foreign matter hardly enters from outside.SOLUTION: The air-suction type conveyance device comprises: a conveyance pipeline through which granules pass; and a granule introduction part connected to an upstream side of the conveyance pipeline. The granule introduction part is provided with a connecting pipe, an inlet cylinder, and an outer cylinder. As to the connecting pipe, its upstream side end portion is directed upward, and its downstream side end portion is connected to the conveyance pipeline. The inlet cylinder formed of a net material is connected to an upstream side of the connecting pipe. The outer cylinder whose inner peripheral surface comes in slide contact with an outer peripheral surface of the inlet cylinder is slidable in a vertical direction.SELECTED DRAWING: Figure 1 【課題】二次空気の取り込み量を容易に調整可能であって、外部から異物が混入しにくい空気吸引式搬送装置を提供する。【解決手段】粒体が通過する搬送管路と、該搬送管路の上流側に接続する粒体導入部を備え、該粒体導入部は、連結管と、入口筒と、外筒を備え、前記連結管は、上流側端部が上方を向き、下流側端部が前記搬送管路に接続しており、前記入口筒は、網材からなり前記連結管の上流側に接続しており、前記外筒は、内周面が前記入口筒の外周面に摺接するものであって上下方向に摺動自在である。【選択図】図１