| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic screening device provided with a decoupler for reducing vibration to a mesh frame of a transducer. SOLUTION: In this ultrasonic screening device provided with a decoupler 18 for transmitting vibration formed by a transducer T to a separation medium through a first resonator 16 to enable the combination of the transducer T and the first transducer 16 held to a screen containing the separation medium disposed on a frame 12, the first resonator 16 is about circular in section and has a first shape. The ultrasonic decoupler 18 being about circular in section and having a second shape is concentrically connected to the first resonator 16. When using the device, the decoupler 18 is connected to a bracket 20 suited so that it is fitted in the frame 12. The first shape of the first resonator 16 connects the resonator to the transducer T in the position of an antinode and the second shape of the ultrasonic decoupler 18 connects the decoupler to the first resonator 16 in the position of a wave node.
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