The principle of ultrasonic atomization work is to use the ultrasonic generator and the converter to generate self -exciting oscillating, and radiate the ultrasonic with radiation in the water. Make the micro -bubbles in the salt solution vibrated under the action of the sound field. When the sound pressure reaches a certain value, the micro -bubble expands quickly and suddenly closed, and the shock wave is generated when the micro bubble is closed. This series of dynamic processes such as expansion, closure, oscillation, etc. are called sound vacation. Under the action of sound and vacation, the liquid scattered in the gas phase and forms fine mist flying on the surface of the liquid. Driven by the flowing gas, the fine mist continues to flow from the atomizer cup to achieve ultrasound atomization. Only physical reactions throughout the process and no chemical reactions occurred.
2) Control of salt fogging volume in the ultrasonic atomization method
The ultrasonic atomization method is easy to control salt fog setting rate, affecting The factors of salt fog depression rate are: temperature, pressure, salt soluble concentration, salt fog particles diameter, atomization speed, etc. The size of the diameter of the salt fog particles has the following relationship with the ultrasonic frequency:
Ultrasonic frequency;: salt solution density;: surface tension of salt solution
can be seen as other conditions. Timing, you can adjust the salt fog subsidence rate by adjusting the diameter of salt fog particles. The higher the ultrasonic frequency, the thinner the salt fog produced, the lower the salt fog subsidence rate. The purpose of controlling salt fog subsidence can be achieved by regulating the ultrasonic frequency.
The atomization speed is closely related to the power of the ultrasonic wave, and the salt fog depression rate is adjusted by adjusting the power of the ultrasonic generator. Therefore, the setting rate of the unit time is controlled. You can also adjust the output of salt and fog by adjusting the air volume of entering the atomic cup inlet. When the intake volume is large, the micro -bubbles that exist in the liquid will increase, and it is easy to form more fine fog. At the same time, the flow rate of the ambassador salt and mist due to the increase in pressure differences will increase, and the fog in the test area will increase.
In order to prove the feasibility and superiority of ultrasound atomization, the following two tests will be performed:
① Ultrasonic atomization feasibility test
The purpose of this experiment is 1) Whether the salt mist of ultrasonic atomization sinks. (2) Whether the salt fog setting rate can be controlled. (3) Whether the salt solution is not good for physical and chemical changes after the lid.
The ultrasonic generator allows the salt liquid in the atomized cup to atomize and diffuses through the plastic hose to enter the test area. As the diffusion concentration increases, salt fog begins to settle down. The higher the concentration of the salt fog in the test area, the faster the settlement. Eventually the settlement rate reaches a balance and stabilizes. The indicators such as salt solution concentration, pH value, and test area of the test area during the ultrasonic atomization test meet the requirements of salt fog standards.