| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibratory screening apparatus which can separate a very fine object even when a screen mesh with a large diameter size is used in making the screen mesh finely vibrate by ultrasonic wave. SOLUTION: The vibratory screening apparatus M has a separation frame 20 with the screen mesh 22, a vibration supplying means for making the separation frame 20 vibrate, and an ultrasonic-wave generator 31 for making the screen mesh 22 generate fine vibration by the ultrasonic wave. The separation frame 20 has a circular frame 21 and the screen mesh 22 which is arranged on the circular frame 21 and is composed by performing an electroless nickel plating treatment on a raw materials mesh which is formed by knitting many metallic wires. COPYRIGHT: (C)2007,JPO&INPIT
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