The most prominent and widely known effect of power ultrasound in liquids is the dispersing effect. Ultrasound in the liquid dispersion, mainly depends on the liquid ultrasonic cavitation.
Dispersion with ultrasonic waves, emulsifiers do not need to be used in many cases, phacoemulsification can be 1μm particles below. The formation of this high-quality emulsion is primarily due to the strong cavitation of ultrasound near the dispersive tool. The agent can disperse the paraffin in water. The diameter of the dispersed satellites is less than 1 μm.
Ultrasonic dispersion holding point is usually small vibration, acceleration, ultrasonic dispersion device has been widely used in food, fuel, new materials, chemicals, coatings and other fields.
2 scattered principle
1 ultrasonic generator: its efficiency up to 90%, and small size, light weight; (also known as ultrasonic drive power).
Ultrasonic dispersion equipment
2. Ultrasonic system, in order to obtain high-power, the total vibration frequency is selected at about 15kHz, the ultrasonic generator and the resonance system to form a frequency automatic tracking system; (ultrasonic transducer and ultrasonic horn consisting of ultrasonic vibrator ).
3. Ultrasonic dispersion tool; (ultrasonic tool head and vibrator connected).
Ultrasonic dispersion principle
Ultrasound dispersion in many areas have a wide range of applications: such as food, cosmetics, medicine, chemistry and so on. Ultrasound in the application of food dispersion can be divided into: liquid - liquid dispersion (emulsion), solid - liquid dispersion (suspension), gas - liquid dispersion of three cases.
Solid-liquid dispersion (suspension): such as powder emulsion dispersion.
Ultrasound dispersion can also be used for the preparation of nanomaterials; for food sample detection and analysis, such as using ultrasonic dispersion liquid phase microextraction