The principle of ultrasonic cleaning machine is to convert the ultrasonic energy of transducer and power ultrasonic frequency source into mechanical vibration, and make the cleaning solution in the tank radiate to ultrasonic through cleaning the tank wall. Because of the ultrasonic radiation, the microbubbles in the liquid in the tank can keep vibration under the action of acoustic wave.
When the sound pressure or sound intensity reaches a certain level, the bubble will expand rapidly and then close suddenly. In this process, shock wave is generated at the moment of bubble closure, which makes 1012-1013 PA pressure and local temperature around the bubble. The huge pressure generated by ultrasonic cavitation can destroy insoluble pollutants and make them differentiate into solution. The direct counter impact of steam cavitation on the fouling.
Ultrasonic wave is a kind of mechanical wave whose vibration frequency is higher than that of sound wave. It is generated by the vibration of transducer chip under the excitation of voltage. It has the characteristics of high frequency, short wavelength, small diffraction phenomenon, especially good directivity, and can become a ray and propagate directionally.
Ultrasonic has great penetration ability to liquid and solid, especially in the opaque solid of sunlight, it can penetrate tens of meters deep. When the ultrasonic wave touches the impurity or interface, it will produce significant reflection and echo. When it touches the moving object, it will produce Doppler effect. Therefore, ultrasonic testing is widely used in industry, national defense, biomedicine and other aspects.