PROBLEM TO BE SOLVED: To improve conveyance performance and to make maintenance easy for a spiral type conveying device.SOLUTION: The problem is solved in this invention by: including a cylindrical member (100) in which a conveyance passage (170) is formed inside having an interlocking part (118) which interlocks end parts of two spiral axes (40) for conveyance inside the cylindrical member (100) and forming an opening (114) which communicates the conveyance passage (170) and an outside part of the cylindrical part (100), at a portion facing the interlocking part (118) on a side wall of the cylindrical member (100). Also, a lid (125) for blocking the opening (114) is provided. It is preferable to have a configuration in which an auxiliary conveyance passage (172), which becomes a part of the conveyance passage (170), is formed between the inner side surface of the lid (125) and the interlocking part (118), in a state where the lid (125) is mounted on the opening (114).COPYRIGHT: (C)2014,JPO&INPIT【課題】螺旋式搬送装置の搬送性能を向上させるとともに、メンテナンスを容易化する。【解決手段】本発明の課題は、内部に搬送通路(170)が形成された筒状部材(100)を備え、この筒状部材(100)の内部には、搬送用の2つの螺旋軸(40)の端部を連動する連動部(118)を有し、この筒状部材(100)の側壁における連動部(118)と対向する部位に、前記搬送通路(170)と筒状部材(100)の外部とを連通する開口部(114)を形成することにより解決される。また、開口部(114)を閉塞する蓋(125)を備え、この蓋(125)を開口部(114)に装着した状態で、この蓋(125)の内側面と連動部(118)との間に、搬送通路(170)の一部となる補助搬送通路(172)が形成される構成とすることが好ましい。【選択図】図6
