| 摘要 |
PURPOSE:To smoothen the operation of dust cleaner by a method in which a rake is connected with an arm in a vertically and rotationally movable man ner, a guide groove is formed in the side of a screen, and a slide piece moving in the guide groove is attached to the rake. CONSTITUTION:When an arm 13 is turned toward a screen 10 side, a rake 12 is passed through guide grooves 18a and 18b along slide pieces 20 moving in the guide groove 18 and goes down to a bent point D, and the rake 12 is opened downwards. Dust is trapped into the space formed by the rake 12 and the screen 10. When the arm 13 is turaned to the opposite side of the screen 10, the slide pieces 20 pass through the grooves 18a and 18b and dust is pulled up and discharged by the rake 12.
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