| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vibration screen in which control force can be efficiently converted into tension of a screen and the capacity of which for coping with the advanced deformation of a screen member can be improved. Ž<P>SOLUTION: The vibration screen 15 is provided with: a frame-like screen frame 16 supported to be vibrated on a supporting rack; a screen 17 the edges of which are restricted on the inner walls of the screen frame 16; a vibration unit for vibrating the screen frame 16; a screen supporting member 50 for supporting the middle part of the screen 17 from below; and a tension unit 55 which is supported by the screen frame 16 and is used for adjusting the tension state of the screen 17 by vertically sliding the screen supporting member 50. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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