| 摘要 |
PURPOSE:To increase the vibration frequency of a mesh with a simple constitution and to stably separate foreign matter by vibrating plural magnetic members at different phases by change of the magnetic fields around magnet rollers and transmitting these vibrations to the mesh. CONSTITUTION:The magnet rollers 18, 19 having plural poles are arranged above and below the mesh 20 consisting of a nonmagnetic material disposed horizontally within a frame body 17 and are rotated so that the opposite poles face each other in the positions in proximity to the mesh 20. Magnets 23a are respectively mounted at the free ends of flexible sheets 23 of two pieces of vibration generating members disposed at the peak surface of the frame body 17. The respective magnets 23a are so arranged that one of the sides facing the magnet roller 19 is N pole and the other is S pole. Then, the respective magnets 23a vibrate in opposite phases to each other to vibrate the mesh 20 via a vibration rod 24 mounted at the flexible sheets 23 when the magnet roller 19 turns. As a result, the vibration frequencies of the mesh 20 are doubled without changing the number of revolutions, etc., of the magnet roller 19. |
