Kejiemeng: A Brief Analysis of the Working Principle of Ultrasonic Cleaners

Ultrasonic waves refer to sound waves that are inaudible to the human ear. The normal human hearing can detect sound waves ranging from 20 to 20,000 Hertz (HZ). Sound waves below 20 Hertz are called infrasound or subsonic waves, and those above 20,000 Hertz are called ultrasonic waves. I. Main Parameters of Ultrasonic Waves: Frequency: F≥ 20KHz; Power density: p= Transmission power (W)/ Transmission area (cm ²); Usually p≥ 0.3w/cm ². Ii. Working Principle of Ultrasonic Cleaning Machine The main principle of ultrasonic cleaning machine is to convert the acoustic energy of the power ultrasonic frequency source into mechanical vibration by the transducer. The cleaning solution in the tank is radiated to the ultrasonic waves by cleaning the tank wall. Due to the radiation of ultrasonic waves, the microbubbles in the liquid inside the tank can maintain vibration under the action of sound waves. When the sound pressure or sound intensity is subjected to pressure to a certain extent, the bubbles will rapidly expand and then suddenly close. During this process, an shock wave is generated at the moment the bubble closes, creating a pressure of 1012-1013 Pa and local temperature regulation around the bubble. The immense pressure produced by this ultrasonic cavitation can break down insoluble contaminants and dissolve them in the solution. The direct and repeated impact of steam-type cavitation on the contaminants. On the one hand, it disrupts the adsorption between dirt and the surface of the cleaning object; on the other hand, it can cause fatigue damage to the dirt layer and lead to its detachment. The vibration of gas-type bubbles scrubs the solid surface. Once there is a gap in the dirt layer that can be drilled, the bubbles immediately ";" "Drill into" Vibration causes the dirt layer to fall off. Due to cavitation, the two liquids rapidly disperse and emulsify at the interface. When solid particles are wrapped in oil and adhere to the surface of the cleaning object, the oil is emulsified and the solid particles fall off by themselves. When ultrasonic waves propagate in the cleaning liquid, they generate alternating positive and negative sound pressures, forming jets that impact the cleaning object. At the same time, due to nonlinear effects, acoustic flows and micro-acoustic flows are produced. Ultrasonic cavitation generates high-speed micro-jets at the interface between solids and liquids. All these effects can break down dirt, remove or weaken boundary dirt layers, increase stirring and diffusion effects, accelerate the dissolution of soluble dirt, and enhance the cleaning effect of chemical cleaning agents. From this, it can be seen that wherever the liquid can reach and the sound field exists, there is a cleaning effect. Its characteristics are suitable for the cleaning of parts with very complex surface shapes. Especially after adopting this technology, the usage of chemical solvents can be reduced, thereby significantly lowering environmental pollution. The second ultrasonic wave propagates in the liquid, causing the liquid and the cleaning tank to vibrate together at the ultrasonic frequency. When the liquid and the cleaning tank vibrate, they have their own natural frequencies, which are the frequencies of sound waves, so people can hear a buzzing sound. In addition, during the ultrasonic cleaning process, the bubbles visible to the naked eye are not vacuum cluster bubbles but air bubbles, which inhibit cavitation and reduce the cleaning efficiency. Only when the air bubbles in the liquid are completely dragged away can the vacuum nucleus group bubbles of cavitation achieve the best effect. < / p > < p > < a href = "http://www.gzgjm.com" > < strong > ultrasonic cleaning machine < / strong > < / a > features: & other; "Ultrasonic cleaning process technology" It refers to the use of the cavitation effect of ultrasonic waves to impact and peel off dirt on the surface of objects, in order to achieve the purpose of cleaning. It features high cleaning cleanliness and fast cleaning speed. Especially for blind holes and various geometric objects, it has a unique cleaning effect that other cleaning methods cannot achieve.