PROBLEM TO BE SOLVED: To provide a dust collecting tool capable of suppressing generation of dust when a powder or granular material is charged more efficiently and effectively. SOLUTION: The dust collecting device 4 is installed at an input port of a device into which the powder and granules 24 are loaded, and has a tubular portion 47 through which the powder and particulates 24 pass, and an outer peripheral side of the tubular portion 47. The annular pipe line 48 provided and the inner peripheral surface of the tubular part 47 are provided over the entire circumferential direction, and the inside of the tubular part 47 and the annular pipe line 48 are communicated with each other to charge the powdery or granular material 24. A suction port 49 for sucking dust generated along with the above is introduced into the annular conduit 48, and a suction port 51 provided at one end of the annular conduit 48 and communicating with the outside. [Selection diagram] Fig. 3【課題】粉粒体投入時の粉塵発生をより効率よく、かつ効果高く抑制できる集塵用器具を提供する。【解決手段】粉粒体２４が投入される装置の投入口に設置される集塵用器具４であって、粉粒体２４が通過する筒状部４７と、筒状部４７の外周側に設けられる環状管路４８と、筒状部４７の内周面の周方向全体に亘って設けられ、筒状部４７の内側と環状管路４８との間を連通して、粉粒体２４投入に伴い発生する粉塵を環状管路４８に吸入する吸入口４９と、環状管路４８の一端に設けられ外部と連通する吸出口５１と、を備える。【選択図】図３
