How does Ultrasonic Nozzle Work?
Ultrasonic nozzle is a type of atomizing nozzle that generates high-frequency vibrations from a piezoelectric transducer at the tip of the nozzle, resulting in capillary waves in the liquid film. Once the amplitude of capillary waves reaches a critical height (due to the power level provided by the generator), they become too high to support themselves, and tiny droplets fall from the tip of each wave. When the liquid leaves the atomizing surface of the nozzle, it is decomposed into a uniform fine mist of micrometer sized droplets. Under appropriate conditions, atomization can last for a long time.
Each ultrasonic nozzle operates at a specific resonance frequency, which determines the median size of the droplets. The frequency is usually in the range of 20-180 kHz, with the highest frequency producing the smallest droplet size.
The nozzle is made of highly durable materials such as titanium, making it very suitable for various challenging environments and chemicals. The electroactive element is contained within a sealed casing, which can protect the nozzle assembly from external contamination. The liquid feed pipe runs through the entire length of the nozzle. The design of the nozzle ensures that the liquid only comes into contact with the titanium inside the nozzle.
Advantages of ultrasonic nozzles:
1. High transmission efficiency - reducing material usage
2. No blockage - capable of handling high solid content materials
3. Durability - Titanium structure is resistant to various solvents and wear.
4. Uniform distribution of droplet size height - reduces coating defects.
5. Airless spraying - can easily control the process and is also an ideal choice for vacuum environments
Application of ultrasonic nozzle:
1. New energy
2. Nanomaterials
3. Electronic and semiconductor antibacterial coatings
4. Biomedical equipment
5. Glass coating
6. Food industry
