The ultrasonic cleaning machine uses the principle of ultrasonic vibration to clean all kinds of complex geometric shape precision equipment to remove the dirt such as grease, radioactive substances, blood stains and bacteria. So what is the working principle of ultrasonic cleaning machine? What is the composition of ultrasonic cleaning machine?
全自動(dòng)超聲波清洗機(jī)結(jié)構(gòu)
Structure of automatic ultrasonic cleaning machine
1. Ultrasonic generator is composed of power transformer and rectifier system, oscillator, driving stage, power amplifier and transmission transformer.
The transducer consists of a stainless steel slot and a cleaning tank. The transducer is bonded to the bottom of the stainless steel tank, and the damping device is padded between the stainless steel tank and the box frame.
3. The panel of the box is equipped with ammeter, power switch, transmission socket, frequency and power adjustment knob, and the back of which is equipped with power inlet socket and safety tube.
Ultrasonic cleaning machine makes use of the high energy of ultrasonic wave to make the material molecules produce significant sound pressure. When the liquid molecules are closely arranged by ultrasonic vibration, the liquid molecules are under pressure, and when the liquid molecules are sparse by ultrasonic vibration, the liquid molecules are subject to the outward scattered tension.
Liquid molecules can bear pressure better, but when they are under tension, their arrangement is easy to break. This kind of fracture occurs in the place where there are impurities or bubbles in the liquid. After the fracture of liquid molecules, there are many small bubble like cavities in it. These cavities close in a very short time and generate huge instantaneous pressure, which can reach several gigapascals.
The huge instantaneous pressure can cause the surface of solid suspended in liquid to be destroyed rapidly. The effect of supergenerated wave on the sound pressure of liquid and solid is called pitting phenomenon. According to this principle, the oscillator consists of a coupled inductance capacitor oscillation circuit composed of an electronic tube, and the oscillation frequency is determined by the capacitance and inductance. The potentiometer is used to control the feedback signal. The vibration signal is transmitted to the driving stage through the coupling capacitance. After being amplified by the class a power amplifier of the electronic tube, it is then amplified by the non stage power, and then transmitted to the transducer to convert the piezoelectric energy into mechanical energy, thus generating ultrasonic vibration.