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Usually, the ultrasonic vibrating screen system is mainly composed of an ultrasonic generator, a transducer, and a resonance ring. The ultrasonic generator generates high frequency oscillations, which are converted by the transducer into longitudinal oscillating waves of high frequency sinusoidal form.
And this oscillating wave is transmitted to the resonance ring, so that the resonance ring resonates, and then the vibration is evenly transmitted by the resonance ring to only the sieve surface, and the material on the sieve mesh is superimposed with the ultrasonic vibration while doing the low-frequency three-dimensional vibration, which can prevent The mesh is blocked and the screening yield and quality can be improved.
According to the relevant manufacturers, the ultrasonic vibrating screen can improve the flat drop of the low density fraction in the gravity settlement (light contact between the powder and the mesh port), the slip effect, improve the retention or wedging of the high density metal in the mesh port, and improve the electrostatic powder. Adhesion effect, thereby improving screening efficiency and screening quality. The sieving pass rate indicates that the pass rate is generally 50%-100% higher than that without the ultrasonic vibrating screen, and the pass rate is increased by 400% in some cases.
The author understands that the ultrasonic vibrating screen has a great influence on the pharmaceutical production. For example, when the ultrasonic vibrating screen is equipped with an advanced ultrasonic cleaning system, the screen frame can be used for three-dimensional movement under the driving of the motor, and at the same time A high-frequency, low-amplitude ultrasonic vibration wave from the ultrasonic system, which allows the material to float at low surface on the screen surface, thereby achieving the effect of clearing the high-precision material and improving the screening efficiency.
For example, some companies have designed and produced medical ultrasonic vibrating screens, which can effectively solve the screening problems of strong adsorption, easy agglomeration, high static, high precision, high density, light specific gravity.
Although the ultrasonic vibrating screen is constantly being upgraded, many users do not fully understand the use of this device. “At present, some users are still not fully able to use ultrasonic vibrating screens.†According to industry insiders, the correct and standardized use of ultrasonic vibrating screens can extend the life of products and obtain higher quality products.
Specifically, the ultrasonic controller and the vibrating screen are separately supplied with power, the vibrating screen is three-phase power supply, and the ultrasonic power source is single-phase power supply, both of which need to be reliably grounded.
There are two terminals (red) and black (negative) in the junction box of the ultrasonic resonant power supply. Users need to connect the red and blue wires of the ultrasonic connecting cable to each other and check that the connection is reliable. The aerial plug end of the connecting cable is connected to the oscillator and the seal is securely fastened.
When connecting the ultrasonic resonant power supply and the ultrasonic connecting cable, check the error and then turn on the ultrasonic power switch. With the sound of a "drop", the ultrasonic resonance power is turned on, the display window displays "P0", and enters the self-test state.
After a few seconds, the display window displays the operating current, and the frequency is automatically searched. After 30 seconds, the ultrasonic resonant power supply enters the normal working state. Touching the screen with your hand, the screen has a strong sense of vibration.
According to reports, the ultrasonic resonant power supply has two working states: continuous working state (left window display: Cn, n is 1~9 digits) and pulse working state (left window display: Hn, n is 1~2 digits), normal Continuous working status.
In the continuous working state, press the mode key to enter the pulse working state. Press the mode button in the pulse state to return to the continuous working state. Press the display button in the continuous working state to display the center frequency of the power supply (the left window displays: F-), and then press the display button to return to the continuous working state.
Standardize the use of ultrasonic vibrating screen to ensure the screening accuracy of equipment
The ultrasonic vibrating screen converts 220v, 50HZ or 110v, 60HZ electric energy into 38KHZ high-frequency electric energy, and inputs it into an ultrasonic transducer to turn it into 38KHZ mechanical vibration, thereby achieving the purpose of efficient screening and cleaning.