Ultrasonic cleaner manufacturer: A brief introduction to ultrasonic cleaners
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Summary: Ultrasound propagates in liquids, causing the liquid and cleaning tank to vibrate together at the ultrasonic frequency. When the liquid and cleaning tank vibrate, they have their own natural frequency, which is the frequency of the sound wave, so people hear a humming sound. With the continuous development of the cleaning industry, more and more industries and enterprises have applied ultrasonic cleaning machines.
Ultrasound propagates in liquids, causing the liquid and cleaning tank to vibrate at the ultrasonic frequency. When the liquid and cleaning tank vibrate, they have their own natural frequencies, which are the frequencies of the sound waves, so people hear a buzzing sound. With the continuous development of the cleaning industry, more and more industries and enterprises have applied ultrasonic cleaning machines.
Regarding the principle of ultrasonic cleaning machines, the high-frequency oscillating signal emitted by the ultrasonic generator is converted into high-frequency mechanical oscillations by the transducer and transmitted to the cleaning solvent medium. The positive radiation of ultrasound in the cleaning solution causes the liquid to flow, generating thousands of tiny bubbles with diameters of 50-500 μm. The tiny bubbles in the liquid vibrate under the action of the sound field. These bubbles form and grow in the negative pressure zone of longitudinal ultrasonic propagation, and in the positive pressure zone, when the sound pressure reaches a certain value, the bubbles suddenly increase and then close. When the bubbles close, a shock wave is generated, producing thousands of atmospheric pressures around the bubbles, breaking down insoluble dirt and dispersing it in the cleaning solution. When agglomerates are wrapped in oil stains and attached to the surface of the cleaning piece, the oil is emulsified, and the solid particles are separated, thereby achieving the purpose of cleaning the cleaning piece. In this process, known as the "cavitation" effect, the bubble closure creates temperatures of several hundred degrees Celsius and instantaneous high pressures exceeding 1000 atmospheres.
Ultrasonic cleaning machines have good ultrasonic cleaning effects and are easy to operate. The sound people hear is a sound wave signal with a frequency of 20-20,000 Hz. Sound waves above 20,000 Hz are called ultrasound. The propagation of sound waves follows a vertical sine curve, producing a large number of small bubbles. One reason is that the local tensile stress in the liquid forms negative pressure, and the decrease in pressure causes the gas originally dissolved in the liquid to become supersaturated, but it escapes from the liquid to become small bubbles; another reason is that the strong tensile stress "tears" the liquid into cavities, which is called cavitation.
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