| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dust supply machine including a rotor for roughly crushing wastes, and capable of suppressing the winding of a long object to the crushing rotor. <P>SOLUTION: This dust supply device includes the crushing rotor 22, a fixed blade, and a scraper. The crushing rotor 22 includes a drum 28, and rotary blade supporting rings 30 disposed on an outer peripheral face of the drum. The rotary blade supporting rings 30 are arranged in the rotating shaft direction of the drum 28, and support a plurality of rotary blades for crushing the waste in co-operation with the fixed blade 44, and circumferential grooves extending in the circumferential direction, are formed between the rotary blade supporting rings 30. The scraper has scraping members 50 disposed between the rotary blade supporting rings 30. A cutting projection projecting outward in the radial direction so that it can be opposed to the scraping member 50 is formed at a part in the circumferential direction of a bottom face of each circumferential groove. A projecting dimension is determined to a degree of applying a shearing force to the long object in the circumferential groove 34 with the scraping member 50 accompanied by the rotation of the crushing rotor 22 to cut the long object. <P>COPYRIGHT: (C)2013,JPO&INPIT |
