Ultrasonic Cavitation Machine's Ultrasonic Effect
The ultrasonic effect of the Ultrasonic Cavitation Machine: When the ultrasonic wave propagates in the Ultrasonic Cavitation Machine, due to the interaction between the ultrasonic wave and the Ultrasonic Cavitation Machine, the Ultrasonic Cavitation Machine undergoes physical and chemical changes, thereby producing a series of mechanical, thermal and electromagnetic The acoustic and chemical ultrasonic effects include the following 4 effects:
① Mechanical effects. The mechanical action of ultrasound can promote liquid emulsification, gel liquefaction and solid dispersion. When a standing wave is formed in the ultrasonic fluid Ultrasonic Cavitation Machine, the tiny particles suspended in the fluid are condensed at the nodes due to mechanical force, forming periodic accumulation in the space. When ultrasonic waves propagate in piezoelectric materials and magnetostrictive materials, induced electrical polarization and induced magnetization due to the mechanical action of ultrasonic waves (see Physics of Ultrasonic Cavitation Machine and Magnetostriction).
② Cavitation. When ultrasonic waves act on liquids, a large number of small bubbles can be generated. One reason is that partial tensile stress appears in the liquid to form negative pressure. The decrease in pressure makes the gas originally dissolved in the liquid supersaturate and escape from the liquid and become small bubbles. The other reason is that the strong tensile stress "tears" the liquid into a cavity, which is called cavitation. Inside the cavity is liquid vapor or another gas dissolved in liquid, and it may even be a vacuum. The small bubbles formed by cavitation will continue to move, grow, or suddenly burst with the vibration of the surrounding Ultrasonic Cavitation Machine. When it bursts, the surrounding liquid suddenly rushes into the bubble, generating high temperature, high pressure, and shock waves. The internal friction accompanied by cavitation can form electric charges, and cause light emission in the bubbles due to discharge. The technology of ultrasonic treatment in liquid is mostly related to cavitation.
③ Thermal effect. Since the ultrasonic waves cause the substance to vibrate, it can produce a thermal effect when absorbed by the Ultrasonic Cavitation Machine.
④Chemical effect. The effect of ultrasound can promote or accelerate certain chemical reactions. For example, pure distilled water undergoes ultrasonic treatment to produce gen peroxide; nitrogen-dissolved water produces nitrous acid after ultrasonic treatment; the dye aqueous solution becomes discolored or faded after ultrasonic treatment. The occurrence of these phenomena is always accompanied by cavitation. Ultrasound can also accelerate the lysis, decomposition and polymerization of many chemical substances. Ultrasound also has a significant effect on photochemical and electrochemical processes. After the aqueous solutions of various amino acids and other organic substances are ultrasonically processed, the characteristic absorption bands disappear and show a uniform general absorption, which indicates that the cavitation has changed the molecular structure.
