| 摘要 |
PURPOSE: To relatively simply attach and detach a blow tube by providing a cylinder as a pressure means and rotating the cylinder around a vertical shaft parallel to an axis of the cylinder to provide a required pressure. CONSTITUTION: A dust collector is provided with a lot of air-supply tubes 12 penetrating through an outer wall 10, a main plate 16 is fixed to the outer wall 16 and is provided with a plurality of openings 18 and a dust collecting bag 20 is freely attachably and detachably mounted to each opening 18. A lot of blow tubes 22 for blowing air to the bags 22 are provided, each blow tube 22 is provided with a means to press an opening end part 32 for a gasket 30, and the pressing means is provided with a cylinder 42 mounted on a vertical shaft 44. In order to remove the collecting bag 20, a handle 48 is rotated for rotating the shaft and cylinder 42 until cylinder wall 46 butts against a closing end part 36 of the blow tube 22, which causes the blow tube 22 to move in the shaft direction, releasing the opening end part 32 from a sleeve 28. Thus, the blow tube 22 can be easily detached. |
