double screw volumetric feeder for powder

- Oct 16, 2017 -

The sound that people hear is the frequency 20-20000hz sound wave signal, above 20000Hz sound wave is called the ultrasonic wave, the transmission of sound wave transmits according to the Sine curve longitudinal, produces a large number of small bubbles. One reason is that the liquid in the local tensile stress and the formation of negative pressure, reducing the pressure of the original dissolved in the liquid gas saturation, and from the liquid escape, become a small bubble, another reason is that the strong tensile stress of the liquid "rip" into an empty, called cavitation.

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