Principles of ultrasonic spray

Use of ultrasonic vibrations generated in the liquid atomization function, the change can be the front of the liquid flowing through the ultrasonic atomization, to produce the fine droplets of micron; Add an appropriate pressure of the compressed gas, so that the fog particles in the air flow under the action, more Suixiao homogenization run points to guide mist particles to increase the power of atomized particles run, so as to treat the surface of coated precision spraying purposes.

Because of the characteristics of the ultrasonic atomizer, generally applicable to a slightly lower viscosity liquid or liquid solid mixture (the liquid mixed with appropriate amount of minute particles), the general ultrasonic vibration frequency is higher, the smaller the particle atomization, but also electrical power becomes low, the the atomization amount corresponding smaller. Such as vibration frequency of 30KHz-100KHz, may correspond to produce a particle diameter of about 80μm ~ 20μm. After the spray of the liquid (or liquid-solid) by adjusting the concentration and viscosity for the fluid volume, the diversion of the gas pressure, nozzle or spray platform relative running speed, an ultrasonic vibration frequency and power, such as electrical, physical parameters can be achieved subnanometer microns scale film thickness.

Because the atomized particles are subtle, and the higher the activity of the particle surface, to adjust the appropriate diversion gas pressure, each particle can be well adsorbed for spraying surfaces, does not generate a rebound and spillage losses, in order to ensure the uniformity of the spray, and utilization of the coating material (95% -99%).

Depending upon different spray application and requirements, and can select a different form of the nozzle, the nozzle according to the different structure, are generally divided into the fluid, surface drainage and extrusion-type. Generally, the fluid by the formula is applicable to the uniform spraying of the occasion of middle and small area, particularly suitable for the spraying of the liquid-solid mixture, prior to the atomization first stirred after the ultrasonic vibration transducer, a more uniform mixing. Apply to a larger area quickly spray the surface drainage; Extrusion generally applicable to a smaller range of linear spray.