DUST BAG DEVICE, DUST BAG AND DUST-COLLECTING FILTER

摘要

PROBLEM TO BE SOLVED: To dump dusts recovered in a dust-collecting filter without contaminating a floor, or the like, at a dust bag device provided with a dust bag and the dust-collecting filter accommodated in the dust bag. SOLUTION: The dust bag has an openable/closable bag body 30 for accommodating the dust-collecting filter; and a cylindrical body 10 which is attached to the bag body 30 and one end of which is connectable to a discharge port of the dust-collecting device and the other end is projected into the dust bag. A check valve 24 is provided on the other end of the cylindrical body 10. The dust-collecting filter provided with a cylindrical body insertion port inserted with the cylindrical body 10 and a dust discharge port for discharging the dusts is mounted to this dust bag. When the dusts recovered in the dust-collecting filter are dumped, they are dumped from the dust discharge port in the state that the cylindrical body 10 is inserted into the dust-collecting filter.