DUST COLLECTOR

PROBLEM TO BE SOLVED: To facilitate transfer for connection with different apparatuses and enable reliable collection even of floating particulate dust.SOLUTION: A dust collector includes a suction hole 2 at one end and a suction pipe 10 to be connected with a separation cylindrical tube 3 in the tangential direction, disposed at the other end, and a dust collection fan 4 arranged inside the suction pipe 10. One end of an exhaust pipe 6 is connected in such a way as to penetrate the separation cylindrical tube 3, and the other end of the exhaust pipe 6 is opened to border on a water tank 7. A rubbish bag 15 is mounted, in a freely removable way, on the opened part at the lower end of the separation cylindrical tube 3 as a foreign matter collecting portion 5. Individual constituents other than the rubbish bag 15 and the lower part of the separation cylindrical tube 3 are covered with a housing 8, and the constituents of the dust collector are mounted on a cart 9. Air within the carrying passage is sucked by the dust collection fan 4; foreign matter contaminating a lump of grains is made to flow down to the rubbish bag 15 along the direction of a swirling flow generated in the separation cylindrical tube 3; and fine dust difficult to remove thoroughly by the separation cylindrical tube 3 is captured with water in the water tank 7.