Frequently Asked Questions About Ultrasonic Vibratory Screening Systems

The working principle of ultrasonic vibrating screen adopts advanced screening technology and rich working experience to solve screening problems. This is also one of the important reasons for the high efficiency and popularity of ultrasonic vibrating screen. Ultrasonic vibrating screen has simple operation and high efficiency, which can greatly save production time and labor cost. At the same time, the screening machine has an automatic control system, which can be adjusted according to the characteristics and requirements of different raw materials to ensure the screening effect. The screening machine also has the characteristics of environmental protection and energy saving, effectively reducing the generation of waste and energy waste.

The following are some of the questions and answers to the ultrasonic vibration screening system that we have sorted out. Welcome new and old friends to consult.

Question 1
Q: What is the principle of ultrasonic vibrating screen?
Answer: Use the same ultrasonic power supply to connect a net cleaning transducer. The radiation surface of the ultrasonic transducer is in contact with the blocked net surface, and the blockage at the net opening can be removed by relative displacement. It has the advantages of fast and efficient, improving the quality of net cleaning, not changing the size of the net mouth, and not damaging the surface quality of the wire mesh. It can be widely used in test screens and working screens.
Question 2
Q: What is the function of the ultrasonic generator?
Answer: The ultrasonic generator is the core technology of ultrasonic vibration screening. It can make the ultrasonic wave in the best resonance state and play a vital role in solving the problem of screen mesh blockage. The vibrating screen can screen particles more finely. The screening efficiency is higher and the scope of application is wider.
Question 3
Q: What are the main process characteristics of ultrasonic vibration screening?
Answer: The screening performance is greatly affected by many factors such as equipment capacity and inclination. The performance can be measured by the screening efficiency and flux of the product.
Flux is defined as the amount of desired component (undersize material) carried from the feed through the sieving medium per unit area time. The screening efficiency is expressed as the ratio of the amount of material actually passing through the orifice divided by the amount of feed that should theoretically pass through. A commercially perfect screen is considered to be 95% efficient if the process is operated with the appropriate feed concentration and size of particles. In general, the suitable particle size difference between sieving and feed should not exceed 30%. The screening efficiency is high, which can reduce the qualified gain content in the circulating material screening, thereby improving the processing capacity of the mill.
The capacity of the equipment is almost proportional to the screen width. This means that by increasing the length, there will be more opportunities for passage, and this usually leads to an increase in transmission and efficiency. Generally speaking, the standard size of the screen length should be two to three times the width. However, some special cases, such as space constraints, may require a different design.
The angle of inclination can be designed according to the desired mineral particles. For example, the wet screen angle of the concentrator is generally about 25±2 °. Increasing the slope of the screen will effectively reduce the aperture by the cosine of the tilt angle. At the same time, the material also passes through the screen faster, resulting in faster delamination. However, after a certain point, the performance tends to decrease because the slope of the deck is too high, and most particles will stay in the excessive flow instead of passing through the aperture, so the resulting flux is lower.
The table below shows the relationship between the tilt angle and the desired product flux and efficiency.