The main factors affecting the work of ultrasonic atomization spraying system
Ultrasonic spraying equipment
Ultrasonic spraying is a unique spraying technology, which is a spraying method based on ultrasonic atomization nozzle technology. Compared with traditional pneumatic two-fluid spraying, ultrasonic atomized spraying can achieve better uniformity, thinner coating thickness, and higher precision. At the same time, because the ultrasonic spray nozzle can be atomized without the aid of air pressure, the use of ultrasonic spraying can significantly reduce the splashing of the paint during the spraying process, and realize the purpose of saving paint. The utilization rate of the ultrasonic spraying is more than 4 times that of the traditional two-fluid spraying. .
Ultrasonic atomization spraying equipment: Use the energy of ultrasonic waves to break up water or liquids to form tiny particles of several microns to more than 100 microns in size to achieve air humidification, liquid granulation, mixing, promotion of chemical reactions, spraying, and metal melting System fans and other purposes.
The main factors that may affect the work of ultrasonic atomization spraying are as follows:
1. Droplet size
The size of droplets of the same solution during ultrasonic atomization is determined by the vibration frequency of the nozzle, the surface tension and density of the atomized liquid. The frequency is the determining factor. The higher the frequency, the smaller the median diameter of the droplets. The atomized particles are 15-25 microns in size.
2. Atomization flow
The flow range of ultrasonic nozzles is generally relatively large. Since the ultrasonic atomization process does not depend on pressure, the amount of liquid atomized by the nozzle per unit time of the same solution is mainly controlled by the liquid delivery system used in combination with the nozzle.
3. Success or failure of atomization
The liquid is introduced to the atomization surface through the non-clogging channel of the nozzle length, and the liquid appearing on the atomization surface absorbs the vibration energy. The vibration amplitude must be carefully controlled. When it is lower than the so-called critical amplitude, there is not enough energy to generate atomization. But if the vibration is too high, the liquid will be torn apart and sprayed out in lumps. Only the amplitude within a specific input power range can produce an ideal atomization effect. For ultrasonic atomization, the input power level is generally from 10 to 15 watts.
