Knowledge | 2022-05-30
Ultrasonic washer machine for substrate glass
The basic structure of the ultrasonic washer machine for substrate glass
Substrate glass ultrasonic washer machine mainly consists of two parts: ultrasonic cleaning tank and ultrasonic generator. The ultrasonic cleaning tank is made of an ultrasonic vibrating plate connected with an ultrasonic generator and stainless steel mesh plate with strong, good elasticity and corrosion resistance. The bottom of the cleaning tank is provided with an Ultrasonic transducer The ultrasonic generator generates a high frequency and high voltage, which is transmitted to the transducer through the cable connection line. The transducer and the vibration plate together produce high-frequency resonance. The substrate glass can be completely immersed in the ultrasonic cleaning tank through the way of the overflow of the ultrasonic cleaning solution during the transmission of the substrate glass in the washing machine, the solvent in the tank is Sonication to clean the dirt. The main parts of the cleaning machine use Q235, AL6063, OCR18NI9, HT-PVC, and other materials.
Principle of ultrasonic cleaning
A higher than 2000 Hz sound wave is called an ultrasonic wave, ultrasonic wave frequency is high. The wavelength is short, so the direction of transmission is good, and the penetrating ability is strong. The direct and indirect effects of cavitation, direct inflow and acceleration of ultrasonic waves on liquid and dirt are used to disperse, emulsify and peel off the dirt layer to achieve the aim of cleaning.
Sound waves are transmitted along a sine curve, one layer strong and one layer weak. When a weak sound wave acts on a liquid, it exerts a negative pressure on the liquid, that is, the volume of the liquid increases, the molecular gaps in the liquid increase, and many tiny bubbles are formed, will produce a certain positive pressure on the liquid, and liquid volume is compressed to reduce the formation of tiny bubbles in the liquid is crushed. Studies have shown that when Sonication is in a liquid, the bursting of each bubble in the liquid produces a shock wave of enormous energy, the equivalent of instant hundreds of degrees Celsius of heat and thousands of atmospheres of pressure, this phenomenon is called cavitation, ultrasonic cleaning is the use of liquid bubble rupture generated by the shock wave to achieve cleaning and washing the surface of the workpiece inside and outside.
Ultrasonic waves are projected onto the liquid in a high-frequency pattern of alternating compressibility and depressurization at more than 20,000 times per second. When the pressure is reduced, the phenomenon of vacuum nuclear group bubbles appears in the liquid, and when the pressure is applied, the vacuum nuclear group bubbles are crushed by the pressure, resulting in a strong impact force, thus stripping the dirt on the surface of the cleansed object, to achieve precision cleaning purposes.
(2) direct inflow
The phenomenon that ultrasonic waves flow in a liquid along the direction of sound propagation is called direct inflow. When the intensity of the sound wave is 0.5 w/cm ~ 2, the flow velocity is about 10 cm/s. Through this direct flow, the micro-oil dirt on the surface of the cleaned material is stirred, and the cleaning liquid on the surface of the cleaned material also generates convection. The dissolving solution of the dissolved dirt is mixed with the new liquid, thus speeding up the dissolving speed, it plays an important role in the transportation of sewage.
The acceleration is produced by the push of a liquid particle. For the high-frequency ultrasonic cleaning machine, cavitation is not significant, at this time the cleaning mainly depends on the liquid particles' ultrasonic acceleration impact particles for ultra-precision cleaning dirt.
Ultrasonic cleaning has the following technical characteristics:
① The cleaning speed is fast, the cleaning effect is good, the cleanliness is high, the workpiece is consistent, and there is no damage to the surface of the product.
② Do not need to touch the cleaning solution, safe and reliable to clean the deep holes, seams, and workpieces.
③ Save solvents, thermal energy, work venues, and artificial manual.
④ The accuracy of cleaning is high, and you can strongly clean the tiny stain particles.
Substrate glass ultrasonic washer machine has multi-stage heating ultrasonic cleaning, as well as spray cleaning will optical glass surface impurities to better wash away dirt, and slowly pull off the cleaning solution, the utility model can better overcome the watermark easily produced when the optical glass is cleaned and has the advantages of reducing the labor cost, greatly increasing the cleaning productivity in a short time, and the design of the equipment greatly reduces the space occupied by the equipment, the utility model has the advantages of small land use, high efficiency, low cost, etc..