Ultrasonic transducer is a kind of energy converter, which mainly uses piezoelectric effect of material to convert the input electric power into mechanical power (i.e. ultrasonic wave) and then transmit it. It is this kind of low-amplitude and high-frequency ultrasonic vibration wave (mechanical wave) that makes the ultrasonic vibration screen stand out from the ordinary light screening equipment and becomes the high-efficiency screening equipment favored by customers of ultrafine subdivision.