How to look at the heavy use of ultrasonic cleaners in the laboratory field

1.Put the cleaning objects gently into the cleaning basket of the ultrasonic cleaner, and then put the cleaning basket into the cleaning tank of the ultrasonic cleaning machine, and the objects cannot be put into the cleaning tank immediately to prevent the destruction of the machine and equipment and the actual effect of cleaning. 2.

According to different commodities or the actual effect of cleaning, pour cleaning liquid, water or cleaning organic solvent according to the proportion, and the water level in the ultrasonic cleaning machine shall not be less than a certain part. 3.The ultrasonic cleaner is connected to the switching power supply to ensure that the switching power supply is connected.

4.Turn on the ultrasonic cleaner button switch, and it shows that everything is working normally for the ultrasonic cleaner.

In addition to the basic function of ultrasonic cleaning, the functions of the laboratory ultrasonic cleaning machine mainly play an important auxiliary role in the research laboratories of agronomy, food, cosmetics, biochemistry, etc., which can not only carry out professional cleaning of special appliances, but also have significant effects in the sample pretreatment, crushing, emulsification, dispersion, dissolution, extraction and extraction, defoaming and degassing, accelerated chemical reaction, nano preparation and other aspects of the analysis object.

The effect is good, put some laundry detergent with the alkali tank acid tank.

Ultrasonic waves propagate in the liquid, so that the liquid and the cleaning tank vibrate together at the ultrasonic frequency, and the liquid and the cleaning tank vibrate with their own natural frequency, which is the frequency of sound waves, so people hear the buzzing sound. With the continuous development of the cleaning industry, more and more industries and enterprises have used ultrasonic cleaning machines. The high-frequency oscillation signal sent by the ultrasonic generator is converted into high-frequency mechanical oscillation by the transducer and propagated to the medium cleaning solvent, and the ultrasonic wave radiates forward in the cleaning liquid, so that the liquid flows and produces tens of thousands of tiny bubbles with a diameter of 50-500 m, and the tiny bubbles existing in the liquid vibrate under the action of the sound field.

These bubbles form and grow in the negative pressure area where the ultrasonic wave propagates longitudinally, while in the positive pressure area, when the sound pressure reaches a certain value, the bubble increases rapidly and then closes abruptly. And when the bubble closes, a shock wave is generated, thousands of atmospheres are generated around it, destroying the insoluble dirt and dispersing them in the cleaning solution, when the group particles are wrapped in oil and adhere to the surface of the cleaning parts, the oil is emulsified, and the solid particles are separated, so as to achieve the purpose of cleaning parts purification. In this process, known as the "cavitation" effect, the bubble closes to form instantaneous high pressures of several high temperatures and more than 1,000 atmospheres.

The advantages of the ultrasonic cleaner are: the ultrasonic cleaning effect is good, and the operation is simple. The sound that people hear is a sound wave signal with a frequency of 20-20000Hz, and the sound wave above 20000Hz is called ultrasound, and the transmission of sound waves travels longitudinally according to a sinusoidal curve, producing a large number of small bubbles.

One reason is that the tensile stress in the liquid forms a negative pressure, and the decrease in pressure makes the gas originally dissolved in the liquid supersaturated, and escapes from the liquid to become small bubbles; Another reason is that the strong tensile stress "tears" the liquid into a cavity, which is called cavitation.

1. Pay attention to the cautious use of cleaning liquid.

When using the ultrasonic cleaning machine, it must be operated in the order required by the specification, especially not to start the machine first and then pour the cleaning liquid into it, which is an illegal operation that will cause serious consequences and even damage the machine, so be sure to put the liquid in first and then turn on the switch. At the same time, the ultrasonic cleaner manufacturer reminds that the composition of the cleaning liquid should also be taken into account, if it contains flammable liquid, then the operation must be completed in a short time, and the whole process must be supervised, and can not leave the scene.

2. Pay attention to the use of corrosive or volatile cleaning liquids to do special treatmentUsually it is not recommended to use dangerous cleaning liquids, but if the situation is more special, it is emphasized that ultrasonic cleaning machine manufacturers must use corrosive or volatile liquids, so they should be properly treated in an indirect way. The specific operation method introduced by the ultrasonic cleaner manufacturer is to add water to the cleaning tank first, and then use another container to fill the cleaning solution and put in the items that need to be cleaned, and then immerse them in the water of the cleaning tank.

3. Pay attention to the relevant factors of cleaning.

Ultrasonic cleaner manufacturers recommend not to put the things that need to be cleaned at the bottom, but to use a specially cleaned bracket to put them in the middle of the position, so that you can evenly stress the force to get a good cleaning effect when eating. At the same time, high-end ultrasonic cleaner manufacturers remind that they should also pay attention to the energy of the cleaning solution put in, and not too little, otherwise the instrument may be damaged or malfunction.

When using a laboratory ultrasonic cleaner, you should pay attention to the following things:

1. Do not open the machine with an empty slot to avoid damaging the machine;

2. It is forbidden to use corrosive and flammable solutions as cleaning agents, so as to avoid accidents and dangers caused by corroding machines;

3. The dosage of cleaning liquid is generally 1 2 or 2 3 of the volume of the machine;

4. Pay attention to keep the machine clean, and turn off the power when not in use;

5. Keep away from heat sources to avoid collision and violent vibration of the machine;

6. Do not stir the air or put your hands into the cleaning liquid during the operation of the machine;

7. When using the machine, you must wear rubber gloves that discharge water, and it is strictly forbidden to operate the button with wet hands;

8. During the maintenance and repair of the machine, it is strictly forbidden to disassemble and install the machine with electricity to prevent electric shock.

1. The power supply of the ultrasonic cleaner and the power supply of the electric heater must have a good grounding device.

2. It is strictly forbidden to start the ultrasonic cleaner when there is no water or solvent in the tank, which will cause air vibration and cause scrap or damage to the vibrating head.

3. It is strictly forbidden to turn on the heating switch when there is no liquid in the cleaning equipment with heating system.

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

5. The bottom of the cleaning cylinder should be washed regularly, and there should be no excessive debris or dirt.

6. Do not put your fingers into the cleaning tank during the operation of the cleaning machine, otherwise you will feel stinging or uncomfortable.

7. Each time the new liquid is changed, the parts can be washed only after the ultrasonic start.

8. Use water or aqueous solution as the cleaning agent, try not to use alcohol, gasoline or any combustible gas as the cleaning agent to add to the cleaning machine, which is easy to cause fire, etc.

9. The best way to make the ultrasonic cleaning effect is the best way to make the ultrasonic cleaning tank, the temperature of the ultrasonic cleaning tank is best to be 60 70, and the cleaning agent is correctly selected according to different cleaning objects. Cleaning agents are generally divided into water-based (alkaline) cleaning agents, organic solvent cleaning agents and chemical reaction cleaning agents. Water-based cleaners are usually the most commonly used, and different cleaning times are selected depending on the degree of contamination and the nature of the dirt to be cleaned.

The transducer inside the ultrasonic cleaner generally rarely fails, and if there is a problem, it is generally caused by the following reasons.

The ultrasonic transducer is damp.

Generally, a megohmmeter is used to check the plug connected to the transducer, and the insulation resistance value between the positive and negative poles of the transducer can be judged. Generally, the insulation resistance is greater than 30 megaohms. If this insulation resistance value is not reached, it is likely that the transducer is damp.

The maintenance method is to put the whole transducer (excluding the spray shell) into the oven to set about 100, dry for three hours or use a hair dryer to remove moisture until the resistance value is normal.

The transducer oscillator ignited, and the ceramic material shattered.

Repairs can be checked with a combination of visual and megohmmeter. Generally, as an emergency treatment measure, the individual damaged transducers can be disconnected, which will not affect the normal use of other transducers.

Transducer degumming.

We know that most manufacturers use adhesive to fix the transducer, but after long-term use of the ultrasonic cleaner, there will be degumming due to vibration. There are also manufacturers using cementation and screw fastening, generally will not appear degumming, due to the effect of the screw, the oscillator will not fall from the vibration surface after degumming, the general judgment method is to gently shake the tail of the oscillator by hand, carefully observe the glue situation of the vibration surface to make a judgment.

Generally, the power output of the ultrasonic power supply is normal after the oscillator is degummed, but because the oscillator is not well connected with the vibrating surface, the vibration effect of the vibrating surface is not good, and the oscillator is likely to burn out because the energy cannot be released after a long time. The degumming of the oscillator is more troublesome for the user to maintain, and it can only be sent back to the manufacturer for maintenance under normal circumstances. The most effective way to avoid the degumming of the oscillator is to pay attention not to impact the vibrating surface during daily use.

Vibrating surface perforation.

Generally, the ultrasonic transducer may be perforated after several years of full load use, which is caused by the long-term high-frequency vibration fatigue of the stainless steel plate of the vibrating surface.

In recent years, with the economic and social development and the increase of scientific research laboratories, all scientific researchers have a consistent problem, that is, how to clean laboratory instruments simply and effectively? Laboratory instruments will adhere to grease, sweat, experimental objects and other dirt in use, such as not cleaned during storage, it will also bring rust and mildew, which will not only affect the service life of laboratory instruments, but also affect the effect of the operator's experimental operation steps in the later stage. Traditional cleaning is usually divided into two kinds, one is to clean with a shovel, scrape, brush, etc., and the other is to clean by some chemical decontamination solvents.

Due to the defects of the above two forms, the cleaning is not clean, causing a series of problems such as ecological and environmental problems, and then the ultrasonic cleaning machine used in the laboratory should change from time to time under the high standard and high requirements of laboratory instrument decontamination.

The use of ultrasonic cleaning technology in biological laboratory cleaning mainly considers that its cleaning method is more environmentally friendly, the cleaning efficiency is high, and the cleaning effect is good, which has the advantages that other cleaning methods cannot match. With the development trend of better and more effective ultrasonic cleaning technology, the use of ultrasonic cleaning machines in biological laboratories in the cleaning and maintenance of laboratory equipment will be more extensive, so what are the functions of ultrasonic cleaning machines in laboratories?

First of all, the essential function of the ultrasonic cleaning machine is cleaning, so its core function is to clean the experimental instruments. Utensils such as beakers. Many experimental operation procedures are very thin and long, and the dirt on the inner wall is often difficult to clean, and it is difficult to clean it in time by manpower, and the residual dirt may directly affect the results of the experiment.

This must be removed with an ultrasonic cleaning machine. Just put it in the trough, pour it with water, and clean the inside and outside of the vessel in a few minutes, completely and thoroughly decontaminated without missing anything.

Why can ultrasonic cleaning machines remove dirt from the inner walls of utensils? This is because its working principle is to use the high frequency of ultrasonic waves to convert into mechanical kinetic energy, and then apply it to the liquid state in the tank, so that the liquid state forms cavitation, forming one fine bubble after another, these bubbles quickly burst, forming an impact force, and continuously impacting the surface of the material immersed in the liquid state, so that the dirt on the surface layer is separated and the cleaning effect is achieved.

Secondly, due to the working principle of ultrasonic cleaning technology, this kind of experimental instrument also has a unique role in the laboratory, which is used to mix evenly, emulsify, peel, purify, etc., and the effect is good.

Overall, do you know more about the advantages of ultrasonic cleaning machines in the laboratory?

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1. Wide range of applications.

Because the characteristics of laboratories are different according to different industries, the popular laboratory ultrasonic cleaner can not only clean the laboratory equipment in various fields, but also carry out some pretreatment, crushing, emulsification, dispersion, dissolution, extraction, defoaming and degassing, accelerated chemical reaction, nano preparation, etc., so it has a very wide range of applications.

2. High efficiency without heat.

Due to the advanced process design, the laboratory ultrasonic cleaner has a more perfect structure, which can not only effectively improve the sound energy conversion efficiency in the process of use, but also use fewer resonance points in the structural design, so it can ensure that the ineffective heat energy of the ultrasonic cleaner is minimized when it is running, so it can meet the requirements of high temperature accuracy under working conditions.

3. Strong operability.

In order to simplify the operation of the laboratory ultrasonic cleaner as much as possible, it adopts the design of Auto one-button automatic button, and there are also personalized selection settings, which can fully meet the needs of laboratory applications in various industries. At the same time, the LCD LCD large screen display interface is used to make the display clearer, so the experimenter can not only have a clear view of various parameters at a glance when operating.

1. High precision: good durability laboratory ultrasonic cleaner has excellent high precision, and can use the penetration energy of ultrasonic waves to clean very fine gaps and small holes. Therefore, ultrasonic cleaning is often the only cleaning method in the laboratory that meets special technical requirements.

2. Ultra-fast: Compared with some conventional cleaning methods, the laboratory ultrasonic cleaning machine is very fast in terms of dust and scale removal on the workpiece, which improves the cleaning efficiency. In addition, there is no need to disassemble the assembly when using this device, which saves some time and effort.

3. Consistency: The so-called consistency refers to the fact that when using the laboratory ultrasonic cleaning machine, no matter whether the objects to be cleaned are large or small, or simple or complex, the degree of cleaning is consistent, and there is no serious difference. In this way, it also ensures that every object that is cleaned has a good cleaning effect.