PURPOSE: To make a titled dust collector easily applicable for multiple purposes by respectively unitizing a filter section having a filter with a dust suction fan, cyclone dust collector section and dust box section and attachably and detachably accumulating these sections.

CONSTITUTION: Air contg. dust is introduced through a suction port 11 into the cyclone section 200 where swirling flow is provided to the air by an outside cylinder 12 of said section to allow the heavy dust to settle downward. The clean air and fine dust are thereafter made to arrive at the filter 7 in the filter section 100 provided in the upper part through an inside cylinder 13. The dust dislodged from the filter 7 and the dust captured in the cyclone section 200 are housed into the dust box 14 in the dust box section 300. The above- mentioned filter section 100, cyclone section 200 and dust box section 300 are attachably and detachably and interchangeably constituted, by which the dust collector is made easily and flexibly adaptable itself to divesified changes of working conditions.