Common types of ultrasonic cleaning machines:

Desktop ultrasonic cleaning machine, ultrasonic pipette cleaning machine, single tank ultrasonic cleaning equipment, ultrasonic pipette cleaning machine, high-power ultrasonic cleaning Machine, ultrasonic cylinder parts cleaning machine, ultrasonic reed cleaning machine, ultrasonic dishwasher, immersion ultrasonic cleaning machine, ultrasonic titanium alloy rod cleaning machine, ultrasonic filter element cleaning machine, ultrasonic aluminum barrel cleaning machine, ultrasonic filter cake cleaning machine , digital ultrasonic cleaning machine, ultrasonic cleaning machine, high-power ultrasonic cleaning machine, ultrasonic cleaning line, fully automatic ultrasonic cleaning machine, ultrasonic bottle washing machine, double-tank ultrasonic cleaning machine, multi-tank ultrasonic cleaning machine, ultrasonic photoelectric glass cleaning machine, medical Ultrasonic cleaning machine, etc.

Basic parameters of ultrasonic cleaning machine

Ultrasonic cleaning is based on cavitation, so many bubbles in the cleaning solution are rapidly generated and implode immediately. The impact caused by the impact will fall off the waste on the inner and outer surfaces of the workpiece immersed in the cleaning solution. As the ultrasonic frequency increases, the number of bubbles increases and the blasting impact force becomes weaker. Therefore, high-frequency ultrasonic is especially suitable for cleaning particle stains without damaging the surface of the workpiece. All ultrasonic cleaning systems require three basic components: a tank to store the cleaning fluid, a transducer that converts electrical energy into mechanical energy, and an ultrasonic generator that generates high-frequency electrical signals.

(1) Frequency: ≥20KHz, which can be divided into three types: low frequency, medium frequency and high frequency.

(2) Cleaning medium: Ultrasonic cleaning is used. Generally, there are two types of cleaning agents: chemical agents, water-based cleaning fluids, etc. The chemical action of the cleaning medium can accelerate the effect of ultrasonic cleaning. Ultrasonic cleaning is a physical action. The two actions are combined to achieve deep and complete cleaning of items.

(3) Power density: Power density = emission power (W) / emission area (cm2) generally ≥ 0.3W/cm2. The higher the power density of ultrasonic waves, the stronger the cavitation effect and the faster the speed. , the better the cleaning effect. However, for precision items with high surface smoothness, long-term high-power density cleaning will cause "cavitation" corrosion on the surface of the items.

(4) Ultrasonic frequency: The lower the ultrasonic frequency, the easier it is to produce cavitation in the liquid, the greater the intensity, and the stronger the effect. It is mainly used for cleaning workpieces (rough and dirty). The higher the frequency, the stronger the directionality of ultrasonic waves, which is mainly used for cleaning delicate items.

(5) Cleaning temperature: Under normal circumstances, the cavitation effect of ultrasonic based sound waves is best at 30℃-40℃. The higher the temperature of the detergent, the more obvious its effect will be. Generally, when applying ultrasonic waves in practice, the operating temperature is 50℃-70℃.

Specifications for the use of ultrasonic cleaning machines:

(1) The power supply of the ultrasonic cleaning machine and the power supply of the electric heater must have excellent grounding protection devices.

(2) If a certain amount of cleaning fluid is not added to the cleaning tank of the ultrasonic cleaning machine, the ultrasonic switch cannot be activated.

(3) For cleaning equipment with heating equipment, it is strictly forbidden to turn on the heating switch when there is no liquid.

(4) It is strictly forbidden to use heavy objects (iron parts) to hit the bottom of the cleaning cylinder to prevent damage to the energy converter chip.

(5) The ultrasonic generator power supply should use a single 220V/50Hz power supply and be equipped with a voltage regulator of more than 2000W.

(6) Clean the bottom of the cleaning tank frequently to avoid excessive impurities or stains.

(7) Each time the fluid is replaced, the parts can be cleaned after the ultrasonic wave is started.

Selection of cleaning agents related to ultrasonic cleaning machines:

When discussing the preparation of ultrasonic cleaning agents, the most important thing to remember is the principle and cleaning process of cleaning agents on dirt. Although washing has a long history, due to the high complexity of the washing process and system, the theoretical community has only essentially explored it but it is difficult to achieve data control of the washing process. Mainly because the solution system is a multi-phase dispersion system. Dispersion media are also complex solutions with a wide variety of components: the surfaces and interfaces involved in the system, as well as the nature of the stains, are extremely complex.

The cleaning agents used in ultrasonic cleaning machines are mostly liquid detergents, and their composition patterns are: surfactants, additives, and other auxiliaries. When a substance is dissolved in water, even at a small concentration, it can significantly reduce the surface tension between water and air, or the interfacial tension between water and other substances, the substance is called a surfactant.

Depending on the electrical properties of the hydrophilic group when the surfactant is dissolved in water, surfactants can be divided into anionic, cationic, neutral and amphoteric surfactants.

The addition of certain additives will play the following roles: 1. Buffering effect: to maintain a stable pH value of the detergent. 2. Anti-corrosion effect on metals. 3. It can increase the emulsifying ability and emulsification stability of detergents. 4. It allows the solution to have very good suspension ability and the ability to stabilize the suspension system, preventing stains from settling again. The selection principles of surfactants, chelating agents and auxiliaries: (1) The detergent composed of them has strong cleaning ability; (2) The chemical properties are mild and will not damage the items being washed; (3) The combination of the two components There will be no chemical interaction in the process and the components will fail; (4) It has good rinseability. The usage temperature and concentration of the prepared washing liquid should be determined by specific experiments. The function of solvent-based cleaning agents is to achieve cleaning purposes by dissolving glue, wax, and asphalt on them. Therefore, in ultrasonic cleaning, it is necessary to select an appropriate cleaning agent according to the characteristics of the dirt on the cleaning object. Only by selecting an appropriate cleaning agent can a satisfactory cleaning effect be achieved.

Other applications of ultrasonic cleaning machines

In addition to cleaning, ultrasonic cleaning machines can also be widely used for degassing, defoaming, emulsification, mixing, replacement, extraction, and powdering. Material crushing and cell crushing. Among them, liquid phase degassing has become one of the main applications of ultrasonic cleaning machines in addition to cleaning, and has become one of the necessary tools for liquid phase instruments.

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