PROBLEM TO BE SOLVED: To provide a dustless chute capable of preventing the generation of dust without using accessory equipment such as a dust collector.;SOLUTION: Provided is a dustless chute 1 formed by attaching a discharge port hood 4 to a chute 2 for transporting granular matters to be transported downward for making them fall from a discharge port 3 so that the discharge port hood 4 surrounds a lower side of the discharge port 3 of the chute 2. The sizes of put-in ports 12a, 13a into which the matters to be transported are put after falling from the discharge port 3 of the chute 2 are different from each other. A rectifier with a drawing function 9 configured in which a large diameter tapered short pipe 12 and a small diameter tapered short pipe 13 which have a tapered shape from the put-in ports 12a, 13a toward downward are disposed with a gap therebetween, and the small diameter tapered short pipe 13 is disposed in the large diameter tapered short pipe 12 concentrically, is disposed in the inside of the discharge port hood 4.;COPYRIGHT: (C)2015,JPO&INPIT
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