used ultrasonic cleaner

Types of used ultrasonic cleaners

An ultrasonic cleaner uses ultrasound waves and a suitable cleaning solvent to clean delicate items. These cleaners often have a variety of applications, from industrial sectors to home use. The following types of ultrasonic cleaning equipment are typically available.

• Immersion Cleaners

These are the most common ultrasonic cleaners. They are tubs or tanks in which the items to be cleaned are placed directly into the liquid. After turning the machine on, high-frequency sound waves are produced, forming bubbles that collapse on the items. Immersion ultrasonic cleaners are commonly used to clean medical instruments, jewelry, and electronic parts. They are more effective than manual cleaning methods, yet they are gentle enough not to cause damage to delicate items.

• Multi-Stage Ultrasonic Cleaners

These are large industrial ultrasonic cleaners that are used to clean items on a production line. The machine has multiple washing stages, and each stage has a specific cleaning solution. Parts to be cleaned move along the different stages via a conveyor system. Multi-stage ultrasonic cleaners are used to clean items made of plastic, metal, glass, and ceramics. They are commonly used in automotive, aerospace, and electronics industries.

• Ultrasonic Vapor Degreasers

This is a type of ultrasonic cleaner that uses vaporized cleaning agents to clean items. The machine first sprays the cleaning agent on the items to be cleaned. The items are then exposed to high-frequency sound waves. This type of ultrasonic cleaner is used to clean items with complex geometries. It is commonly used in the electronics and metalworking industries. The process cleans, degreases, and dries items in one single operation.

• Medical Ultrasonic Cleaners

These are ultrasonic cleaners that are specially designed for cleaning medical instruments. They come in a variety of sizes, from small benchtop units to large industrial cleaners. Medical ultrasonic cleaners are used to remove contaminants like blood, grease, and other biological materials from medical instruments. They are commonly used in hospitals, dental clinics, and laboratories.

• Automated Ultrasonic Cleaners

These are ultrasonic cleaners that are fully automated. They have a conveyor system that moves items to be cleaned through the cleaning process. The machine has multiple washing stages, such as ultrasonic cleaning, rinsing, and drying. Automated ultrasonic cleaners are commonly used in high-volume production environments, such as automotive and electronics manufacturing.

Specifications and maintenance of used ultrasonic cleaners

• Middle size:

Specifications: A middle-sized ultrasonic cleaner usually has a tank size ranging from 2L to 30L, with a frequency of 40kHz or 60kHz, a power of 120W to 1000W, and an input voltage of 110V or 220V.

It is important to conduct regular maintenance on the used ultrasonic cleaning equipment to ensure it works properly. Thorough cleaning of the tank, including the inside and outside, is important. Wipe the outside of the tank with a dry cloth. Avoid wiping the outside of the tank with a damp cloth to prevent it from entering the inside of the tank and damaging the electronic components. A large amount of water or cleaning agent is required during the cleaning process. After cleaning, ensure the tank is dry. Use a dry rag to wipe the inside of the tank. After the inside is completely dry, connect the power supply and turn on the power. Ensure the cleaning effect is normal and there are no abnormal noises. If the noise is abnormal, turn off the power and check the equipment immediately. Regularly check the power line of the ultrasonic cleaning machine and the socket for wear. Replace it in time if there is any damage. Regularly check the grounding wire for looseness. The grounding resistance should be less than 4 ohms. If the resistance is greater than 4 ohms, the grounding wire should be tightened or replaced in time.

• Large capacity:

Specifications: A large-capacity ultrasonic cleaner typically has a tank size ranging from 30L to 600L, a frequency of 28kHz to 40kHz, a power of 1000W to 3000W, and an input voltage of 220V or 380V.

Maintenance: Check the temperature and depth of the cleaning fluid regularly. Add the cleaning fluid in time if the amount is insufficient. If the cleaning liquid is dirty, it needs to be replaced in time. After each operation, clean the residue in the tank immediately. Use a soft cloth or sponge to clean the inside and outside of the tank to avoid scale buildup and corrosion. The cleaning liquid used should be neutral and non-corrosive. Periodically inspect the filter to ensure it is not blocked. Clean or replace the filter in time. Also, check the ultrasonic generator and transducer regularly. Ensure there is no damage or abnormality. Lubricate the bearings and other moving components of the ultrasonic cleaner regularly. This is important for maintaining the proper functioning of the equipment. Inspect the electrical system regularly to ensure that the cables and connections are secure. If there is any damage, it needs to be repaired in time.

Applications of used ultrasonic cleaners

Used ultrasonic cleaning machines are used in a wide range of industries.

• Industrial manufacturing:

Ultrasonic cleaners are used to remove contaminants such as dust, grease, oil, and debris from parts and components. They are commonly used in the manufacturing of electronics, automotive parts, and precision machinery.

• Medical and healthcare:

Ultrasonic cleaners are used to clean and sterilize medical instruments, implants, and equipment. They play a crucial role in maintaining high standards of hygiene and preventing the spread of infections in healthcare settings.

• Jewelry and watchmaking:

Ultrasonic cleaners are used to clean delicate jewelry, gemstones, and watches without causing damage. They can reach small crevices and spaces that are difficult to clean by hand, restoring the luster and appearance of the items.

• Automotive and aerospace:

Ultrasonic cleaners are used in the automotive and aerospace industries to clean precision parts, valves, fuel injectors, and carburetors. They can remove carbon deposits, rust, and contaminants from critical components without damaging them.

• Food and beverage:

Ultrasonic cleaners are used for applications in the food and beverage industry, such as removing labels, dirt, and residue from containers, bottles, and equipment. They help maintain cleanliness and compliance with food safety regulations.

• Archaeology and restoration:

Ultrasonic cleaners are used in the fields of archaeology and restoration to clean delicate artifacts, paintings, and sculptures without using harsh chemicals or abrasives. The gentle cleaning process helps preserve the integrity and authenticity of the cultural heritage.

• Optical and electronics:

Ultrasonic cleaners are used in the fields of optics and electronics to clean lenses, circuit boards, and precision instruments. They can remove fingerprints, dust, and particles without leaving residue or scratches behind, ensuring optimal performance and clarity.

How to choose used ultrasonic cleaners

When buying second-hand ultrasonic cleaners, there are a few things to consider. First, ensure the machine's capacity is sufficient for the intended workload. This includes the size of the tank and the power of the transducers. Choose a unit with a suitable frequency range. While 40 kHz is standard, finer cleaning may require a higher frequency. Lastly, choose a machine that has the right features for the cleaning job, such as timers, heaters, and filtration.

Functionality is a key consideration when investing in a used industrial ultrasonic cleaner. Check for any sign of damage or wear on the unit, including the transducers, control panels, and electrical systems. Look for features such as digital timers and temperature control, which can enhance the cleaning process. Check the machine's filtration system to ensure it can remove contaminants from the cleaning solution effectively. Filtration is important to prevent recontamination of cleaned parts. It is also important to have a well-functioning heating system, as some cleaning tasks require specific temperatures to achieve the desired results.

A used industrial ultrasonic cleaner should have safety features in place, such as automatic shut-off when the lid is open or overload protection. If the machine has a drying feature, make sure the drying process is effective and not too harsh on parts. Thorough inspection of the unit before purchasing can help ensure it will meet the business's cleaning requirements and operate efficiently for years to come. It is also a good idea to ask the seller about the machine's maintenance history and any service records available.

FAQ

Q1: How do manufacturers check the cleanliness of parts done in an ultrasonic cleaner?

A1: Manufacturers use different methods to check the cleanliness of parts after the ultrasonic cleaning process. The most common methods include visual inspection, water break test, and surface analysis techniques. Visual inspection involves checking the parts for any visible debris, contaminants, or discoloration. Manufacturers can use a water break test to check the presence of organic residue on the cleaned surface. If the surface is clean, water will form an even film. Manufacturers can use surface analysis techniques such as scanning electron microscopy to check for any contaminants at a microscopic level.

Q2: How does an ultrasonic cleaner work?

A2: An ultrasonic cleaner works by converting electrical energy into high-frequency sound waves through a transducer. The transducer then vibrates the cleaning solution at a very high frequency. The vibration creates high-energy bubbles that implode, generating micro-jets that remove contaminants from the surfaces of items placed in the cleaner.

Q3: What is the difference between a 2.5L and 6.5L ultrasonic cleaner?

A3: The main difference between a 2.5L and 6.5L ultrasonic cleaner is the size and capacity. The 6.5L ultrasonic cleaner is bigger and can hold more items than the 2.5L cleaner.

Q4: Are used ultrasonic cleaners worth it?

A4: Yes, used ultrasonic cleaners are worth investing in, especially if buyers are working with a tight budget. As long as the equipment is well-maintained and in good condition, it will offer effective and efficient cleaning performance similar to new models.