The ultrasonic cleaner is an instrument for removing pollutants, and the sound energy of the power ultrasonic source is converted into mechanical vibration by the transducer to clean the article, and is widely used in industrial, national defense, biomedical and the like.
Studies have shown that when ultrasonic waves act on a liquid, the rupture of each bubble in the liquid will produce a shock wave with a great energy, which is equivalent to instantaneously generating several hundred degrees of high temperature and up to thousands of atmospheres. This phenomenon is called "empty". "The effect of ultrasonic cleaning" is to use the shock wave generated by the bubble burst in the liquid to clean and wash the inner and outer surfaces of the workpiece. Ultrasonic waves propagate in the liquid, causing the liquid to vibrate together with the cleaning tank at the ultrasonic frequency. When the liquid and the cleaning tank vibrate, they have their own natural frequencies. This vibration frequency is the acoustic frequency, so people hear the humming sound.
The ultrasonic cleaner removes contaminants from liquids and solids on the work surface to achieve a certain degree of cleanliness. Cleaning is a very complicated process of physical and chemical action.
Cleaning is not only related to the nature, type, form and degree of adhesion of the pollutants, but also related to the physical and chemical properties of the cleaning medium, cleaning performance, material of the workpiece, and surface state. Ultrasonic cleaners are scientific and reasonable according to the cleaning conditions. Cleaning process.
Composition
The whole process of automatic ultrasonic cleaning machine is mechanical fully automatic. (Using a single beam multi-arm robot). The automatic super-wave cleaning machine is mainly composed of two parts: an ultrasonic cleaning tank and an ultrasonic generator. The ultrasonic cleaning tank is made of high-quality stainless steel with strong elasticity and corrosion resistance. The ultrasonic transducer vibrator is installed at the bottom; the ultrasonic generator generates high-frequency high-voltage, which is transmitted to the transducer through the cable coupling line, and the transducer is combined with the vibration plate. The high frequency resonance is generated, so that the solvent in the cleaning tank is subjected to ultrasonic waves to wash the dirt.
Application range
Among all the cleaning methods, multi-hook synchronous automatic ultrasonic cleaning is the most efficient and effective one. The reason why ultrasonic cleaning can achieve such effect is closely related to its unique working principle and cleaning method. We know that there are many things that need to be cleaned in production and life. There are many types and links that need to be cleaned, such as: removing pollutants from objects, dredging small holes, and common manual cleaning methods are undoubtedly impossible for hidden objects and hidden objects. To meet the requirements, even steam cleaning and high-pressure water jet cleaning can not meet the demand for higher cleanliness. Ultrasonic cleaning can also kill bacteria, dissolve organic pollutants, prevent over-corrosion, etc. Therefore, ultrasonic cleaning is increasingly Widely used in all walks of life: (1) Machinery industry: the removal of rust and grease; the cleaning of measuring tools; the degreasing and derusting of mechanical parts; the cleaning of engines, carburetor and auto parts; the cleaning and cleaning of filters and filters . (2) Surface treatment industry: degreasing and derusting before electroplating; pre-ion plating cleaning; phosphating; removing carbon deposits; removing scale; removing polishing paste; (3) Instrumentation industry: high cleanliness of precision parts, cleaning before assembly, etc. (4) Electronics industry: printing circuit boards except rosin, solder spots; cleaning of mechanical and electronic parts such as high-voltage contacts. (5) Medical industry: cleaning, disinfection, sterilization of medical equipment, cleaning of experimental utensils, etc. (6) Semiconductor industry: high cleanliness cleaning of semiconductor wafers. (7) Watch and watch industry: remove the sludge, dust, oxide layer, polishing paste, etc. (8) Chemical and biological industries: cleaning and descaling of experimental vessels. (9) Optical industry: degreasing, de-sweating, cleaning, etc. of optical devices.
Cleaning method
It can distinguish the fully enclosed/semi-closed gantry multi-arm robot transfer work, and the computer controls the whole process of the touch screen operation. Greatly reduce the labor intensity.
Brand product
Washing machine, ultrasonic, industrial ultrasonic cleaning machine, high frequency ultrasonic cleaning machine, ultrasonic generator, ultrasonic transducer, fully automatic intelligent ultrasonic cleaning machine and other products. Recently, the company's products are widely used in cleaning glasses, jewelry, watches, pesticide residues and other civilian homes, and have expanded to medical, mechanical, textile, electronics, chemical fiber, petrochemical, colleges and universities, research laboratories, super hard Materials or military industries or departments. The products are sold well in all provinces and cities of the country, famous in Europe, America, Africa and Africa. With its excellent performance and quality, it has won unanimous praise and enthusiasm from customers. The company's professional, honest, sharing and win-win business ideas and development concepts have also been widely used by peers. Recognition and praise.
Typical user
Metro industry: Beijing Metro Line 4, Shenzhen Metro, Shanghai Metro, Kunming Railway Bureau, etc.; Harmony No.: Tianjin Tanggu; Carburetor Industry: Zhejiang Junma, Wenzhou Zhongcheng, etc.; Mobile Phone Industry: Belrose, Foxconn, etc.; Industry: Feitong, Bill Fiber, Optics Valley, etc.;
principle
The ultrasonic cleaner is a standard type, which uses the cross-talk signal from the ultrasonic generator to be converted into an AC mechanical oscillation by the transducer and propagated to the medium--cleaning liquid. The strong ultrasonic wave is densely dispersed in the cleaning liquid. The phased form radiates to the object to be washed. A "cavitation" phenomenon occurs, that is, a "bubble" form in the cleaning liquid, causing a crack. When "cavitation" reaches the moment when the surface of the object to be washed is broken, an impact force far exceeding 1000 atmospheric pressure is generated, so that the dirt in the surface, the hole and the gap of the object are dispersed, cracked and peeled off, so that the object is cleaned and cleaned. It is mainly used for cleaning, degassing, mixing, extracting and cell crushing in small batches of commercial, light industry, colleges and universities.
Scope of application
Ultrasonic cleaning instruments are widely used in electronic devices, semiconductor wafers, circuit boards, plated parts, optical lenses, audio heads, polyester filters, chemical fiber spinnerets, spinnerets, printer inkjet heads, latex molds, magnetic materials, medical Instruments, surgical instruments, glassware, photographic equipment, communication equipment, fire masks, stainless steel products, gold and silver jewelry, watch parts, eyeglass parts, sewing machine parts, precision mechanical parts, hydraulic parts, pneumatic parts, hardware tools, three-way valves, Cleaning, degreasing, descaling, decarburization and surface treatment of bearings, bushings, grease nipples, oil pumps, carburetor, fuel injectors, cylinder heads, cylinder heads, cylinder blocks, locomotive parts, especially for deep holes and blind holes The cleaning of the concave groove is the most ideal equipment.
common problem
The common problems of ultrasonic cleaners are as follows;
1. What is "cavitation"? "Cavitation" is the phenomenon in which millions of tiny bubbles (or holes) form and burst rapidly in a liquid. The "cavitation" is produced as a result of the interaction of high and low pressure waves formed by high frequency sound waves (ultrasonic waves). In the low pressure phase, the bubbles become a little bit larger, and in the high pressure phase, they are compressed and imploded.
2. How can I achieve the best ultrasonic cleaning effect? ​​There are many conditions that can determine the final cleaning effect. The most important thing is to choose the right cleaning solution, clean the proper time at the right temperature, and select the appropriate size and type of ultrasonic wave. washing machine.
3. Will ultrasonic cleaning damage my workpiece? Ultrasonic cleaning is safe for most workpieces. The energy generated by the implosion of thousands of bubbles per second is enormous, but because the energy is concentrated in extremely small areas, the entire cleaning process is safe. The most cautious consideration for safety should be the choice of cleaning fluid. The potential damage of the cleaning fluid to certain workpiece surfaces may increase due to the use of ultrasound. Ultrasonic cleaning is not recommended for the following stones: opal, pearl, emerald, tanzanite, malachite, emerald, lapis lazuli and coral.
Ultrasonic cleaner
Ultrasonic cleaner
4. What is "direct" and "indirect" cleaning? Direct cleaning usually means that the workpiece is cleaned in a cleaning tank filled with cleaning fluid. The workpiece is usually placed in a perforated tray or tool basket. The limitation of direct cleaning is the need to select cleaning fluids that do not damage the ultrasonic cleaning bath. Indirect cleaning is to place the workpiece to be cleaned in a beaker or a tray without holes. The beaker or tray contains the solution instead of being directly installed in the cleaning tank. When indirect cleaning is selected, verify that the water level in the tank is maintained at the standard position.
5. Why do I need a special cleaning solution for cleaning? The purpose of using the cleaning solution is to break the connection between the dirt and the workpiece, and the use of water alone does not improve the cleaning effect. The main purpose of ultrasonic cavitation is also to assist the cleaning fluid for cleaning. A cleaning solution contains a variety of ingredients that achieve optimum cleaning results. For example, reducing the surface tension of the liquid can increase the cavitation strength, while an ultrasonic cleaning solution can contain a wetting agent or a surfactant component.
6. What cleaning solution should I use? Frequently used ultrasonic cleaning fluids are a mixture of various cleaning ingredients, wetting agents and other reactive ingredients. Choosing the right cleaning solution is critical to effectively cleaning the workpiece and eliminating unwanted reactions. You can provide the best cleaning solution for you.
7. What kind of cleaning solution should I not use? Do not use flammable or low flash point solutions. The energy released by cavitation is converted into heat and kinetic energy and produces high temperatures in the solution, which is very dangerous for flammable liquids. Acidic cleaning solutions and bleaches should normally be avoided as they can damage stainless steel tanks or cause hazards; however, they can be used when used in indirect cleaning processes, such as large beakers as indirect cleaning vessels.
8. When should I change the cleaning solution? When cleaning, I can see that the obvious cleaning solution should be replaced, or when the cleaning solution is obviously dirty or invalid, the cleaning solution should also be replaced.
Household ultrasonic cleaner
9. Why do I have to keep the cleaning fluid within the height allowed by the liquid level indicator? The ultrasonic cleaning system is a "tuning" system. Improper liquid level will change the cleaning environment, which will affect the system frequency, reduce cleaning efficiency and damage the equipment. . Maintaining the proper level allows the workpiece to be in optimal flow and protects the heater and diaphragm from damage due to overheating.
10. What is the length of the cleaning time? The cleaning time varies depending on factors such as dirt, cleaning fluid, temperature and cleanliness requirements. When the ultrasonic cleaning was started, almost at the same time, it was observed that significant dirt was removed. Adjusting the cleaning time is the easiest (and often misused) method to compensate for changes that occur during the process. While an experienced operator can try to ensure the time required for a new cleaning process, it is often necessary to verify the actual application by selecting cleaning fluids and contaminated workpieces.
11. What is the heating device used for? The huge energy generated by the cavitation generates heat. The main purpose of the heating device is to maintain the temperature in the cleaning solution during the cleaning process.
12. What is the best cleaning temperature? Heating usually provides the speed of cleaning. At the same time, the chemical composition of most cleaning solutions will achieve the best cleaning effect at a certain temperature. The best way to find the best temperature is to experiment. Typically, the optimum cleaning temperature will be between 50 ° C and 65 ° C.
Common malfunctions
When the ultrasonic cleaner fails to function normally, the following eight conditions are common, and the eight conditions are analyzed and tested:
First, the insurance damage: If there is no power display after booting, no action, first of all, it depends on whether the insurance in the power supply seat is damaged.
Analysis: It is possible that the user grounding wire is mixed with the live wire or the neutral wire, and there is no grounding (the ground wire of the machine is connected to the outer casing of the machine), and there may be a short circuit of the machine, and a short circuit occurs in the aging of the components, resulting in insurance damage.
Detection: Take out the insurance to watch, whether there is a break, use the multimeter to measure the disconnection, and replace the new device.
Second, the transducer is damaged:
Analysis: It may be due to the long-term use of the state, the temperature will gradually rise, causing the colloid melting transducer to fall off or the ceramic part of the transducer to break.
Detection: The insulation strength of the transducer is measured with a shaker. The insulation strength is below 200 MΩ and cannot be used. A new transducer must be replaced.
The internal ceramic of the transducer will also break due to long-term use, making it unable to work properly.
Third, the power tube damage:
Analysis: The power tube on the main board will be short-circuited due to the uninterrupted use of the machine for a long time or the cleaning liquid is used for too long.
Detection: When the power tube is connected on the main board, use a multimeter to measure the resistance of the pins on both sides of the power tube. Under normal conditions, it should be around 22Ω. After taking down the power tube (disconnected from the main board), it should be measured between the various pins.
Fourth, the regulator tube is damaged
Analysis: The damage of the Zener tube is generally caused by the power-tube resistance value being small or short-circuited, and it is rarely damaged by itself.
Detection: According to the characteristics of the diode, forward conduction, reverse termination. It is measured with a multimeter diode file, and the forward resistance is about 70Ω, which is reversed. If the value deviation is too large or the forward resistance is also ∞, replace the new regulator.
Five, bridge damage (diode rectifier circuit)
Analysis: the same as the regulator tube status
Detection: also according to the characteristics of the diode (the bridge itself is composed of diodes)
6. Damage to the control board (adjustable ultrasonic cleaner)
Analysis: Long-term continuous work, related components aging, and sometimes related to the penetration of cleaning fluid.
Detection: Disconnect the control board from the motherboard when the machine is not working. Power on the motherboard. If the machine is working, the control panel is damaged and needs to be replaced.
7. Damage to the inductor and isolation transformer
Analysis: Because the machine works for a long time, the inductor and the transformer are heat-dissipating components, which may melt and burn due to excessive temperature, causing a short circuit.
Detection: Inductance, transformer damage, in most cases can be seen visually burned, replace the new device.
Do not worry when the ultrasonic cleaner malfunctions, and solve the problem according to the above analysis and detection. More questions can be called professional ultrasonic cleaning machine manufacturers, such as Jining Tianhua ultrasound, Kunshan Sumei and so on.
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