The principle of the fully automatic ultrasonic cleaning machine is to convert the acoustic energy of the power ultrasonic frequency source into mechanical vibration through the transducer, and make it radiate the cleaning liquid in the tank to the ultrasonic through the cleaning tank wall. Because of the radiated ultrasonic wave, the microbubbles in the liquid in the groove 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 suddenly close. In this process, the shock wave will be generated at the moment of bubble closure, and 1012-1013pa pressure and local temperature will be generated around the bubble. The huge pressure generated by this ultrasonic cavitation can destroy the insoluble dirt and make them differentiate into solution. The direct and repeated impact of steam cavitation on the dirt. On the one hand, it can destroy the adsorption between the dirt and the surface of the cleaning part, and on the other hand, it can cause the fatigue damage of the dirt layer and be refuted. The vibration of gas-type bubbles can scrub the solid surface. Once the dirt layer has a seam, the bubbles immediately "drill in" and vibrate to make the dirt layer fall off. Because of the cavitation function, the two liquids disperse rapidly at the interface and emulsify. When the solid particles are wrapped in oil and adhere to the surface of the cleaning part, the oil is emulsified Solid particles fall off by themselves, and when ultrasonic wave propagates in the cleaning solution, it will generate positive and negative alternating sound pressure, form a jet, and impact the cleaning part. At the same time, due to nonlinear effects, it will generate sound flow and micro-acoustic flow, while ultrasonic cavitation will generate high-speed micro-jet at the interface of solid and liquid. All these effects can destroy the dirt, remove or weaken the boundary dirt layer, increase the mixing and diffusion effects, and accelerate the dissolution of soluble dirt, Strengthen the cleaning effect of chemical cleaning agent. It can be seen that any place where the liquid can be immersed and the sound field exists has the cleaning function, and its characteristics are applicable to the cleaning of parts with very complex surface shape. Especially after using this technology, the amount of chemical solvent can be reduced, thus greatly reducing environmental pollution.

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