The utility model provides a take bag collector of case that gathers materials, including last box (1) and set up air inlet flow equalizing pipe (2) on the box, set up filter bag (3) and jetting device (4) in the box, be located ash bucket (5) of bottom half, set up in helical feeding mechanism (6) of ash bucket bottom, set up in unloading pipe (8) of being equipped with of helical feeding mechanism discharge end unloading valve (7), set up and expect sack (9) in connecing of unloading pipe lower extreme, still be provided with the case that gathers materials (10) that the sealed cowling was stayed material pipe lower part and was gathered materials the sack and be equipped with door (12), connect one gather dust tub (11) at the air inlet flow equalizing pipe mouth of pipe, gather dust thetail end of pipe shen ru to the case that gathers materials in. The utility model discloses bag collector can be effectively reduced and the pollution of the raise dust of material in -process production to the environment is arranged.