Large rotary evaporator manufacturers provide you with 2L, 5L, 10L, 20L, 50L rotary evaporator and explosion-proof rotary evaporator, as well as supporting products of rotary evaporator
Rotary evaporator is a commonly used equipment in the laboratory. It consists of a motor, a distillation flask, a heating pot, and a condenser. It is mainly used for continuous distillation of volatile solvents under reduced pressure. Rotary evaporators produced by rotary evaporator manufacturers can be divided into 2L rotary evaporators, 5L rotary evaporators, 10L rotary evaporators, 20L rotary evaporators and 50L rotary evaporators. In addition, we also develop and develop according to the actual needs of customers. Explosion-proof rotary evaporator. Next, we will introduce in detail the structure of the rotary evaporator, the use of the rotary evaporator and precautions.
The main components of the rotary evaporator:
2. Evaporation tube, the evaporation tube has two functions, first it plays the role of supporting the rotation axis of the sample, and secondly it sucks the sample through the evaporation tube and the vacuum system
3. Vacuum system, used to reduce the air pressure of the rotary evaporator system;
4, fluid heating pot, usually under water to heat the sample;
5. Condensation tube, use double serpentine condensation or other condensing agents such as dry ice and acetone to condense the sample;
6. Condensate the sample collection bottle. After the sample cools, enter the collection bottle.
A mechanical or motor mechanism is used to quickly lift the evaporating flask in the heating pot.
The vacuum system of the rotary evaporator can be a simple water suction pump immersed in a cold water bath, or a mechanical vacuum pump with a cooling tube. Evaporating and condensing glass components can be simple or complex, depending on the goals of the distillation and the characteristics of the solvent to be distilled. Different commercial equipment will include some basic features. Modern equipment usually adds functions such as digitally controlled vacuum pumps, digital display of heating temperature and even steam temperature.
⒈Height adjustment: Manually lift, turn the handwheel above the machine column, forward to rise, reverse to fall
Electric lift, the main unit touches the up key, and the main unit touches the down key.
⒉The condenser has two external joints for cooling water. One end is connected with water and the other end is connected with tap water. Generally, it is connected to tap water. The lower the temperature of the condensed water, the better the effect. The upper port is equipped with a vacuum joint and a vacuum pump leather tube. For vacuuming.
⒊ Before turning on the machine, turn the speed control knob to the left, press the power switch indicator light, and then slowly turn right to the required rotation speed. Generally, large evaporation bottles are used for low speed and low viscosity solutions. Flasks It is the standard interface No. 24, and two 500ml and 1000ml flasks are randomly included. The amount of solution is generally not more than 50%.
⒋During use, the pressure should be reduced first, and then the motor should be turned to rotate the distillation flask. At the end, the motor should be stopped before venting to the atmosphere to prevent the distillation flask from falling off during rotation.
Notes on rotary evaporator:
1. Use a small vacuum before use, and then rotate to prevent the distillation flask from slipping. When stopping, stop the rotation, hold the distillation flask by hand, and open the atmosphere. When the vacuum drops to a certain index, stop the vacuum pump to prevent the distillation flask. Shedding and suction.
2. Each interface, sealing surface, sealing ring and joints need to be coated with a layer of vacuum grease before installation.
3. Water must be added to the heating tank before power is applied.
4. If the vacuum is too low, check the air tightness of each joint, vacuum tube and glass bottle.
5. When rotary steam is sensitive to air, connect a nitrogen balloon to the exhaust port, first pass a burst of nitrogen, exhaust the air in the rotary steamer, and then connect the sample bottle to spin. After steaming, release nitrogen to increase the pressure, then turn off the pump, then remove the sample bottle and seal it.
6. If the sample viscosity is very large, slow down the rotation speed, and then slowly rotate it manually to form a new liquid surface to facilitate solvent evaporation.
Of course, if you need to purchase the supporting products of the rotary evaporator, we can also provide
 Low-temperature cooling circulation pump |
 Desktop circulating water vacuum pump |
If you want to know more about rotary evaporator equipment or need to purchase rotary evaporator s equipment, please contact us via email（[email protected]） or WhatsApp（+(86) 16639109158）, and look forward to cooperating with you.
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