2L 5L 10L 20L 50L Rotary Evaporator

Rotary evaporators can be used to recover and evaporate organic solvents. A motor is used to drive the distilling bottle to rotate, and since the distiller is constantly rotating, bumping can be avoided during boiling. At the same time, due to the continuous rotation, the liquid is attached to the wall of the distiller, forming a layer of liquid film, which increases the evaporation area and accelerates the evaporation speed.

RE-501(5L Rotary Evaporator)

The Working Principle of the Rotary Evaporator:

The rotary evaporator is electronically controlled to make the evaporating flask rotate at a constant speed at the most suitable speed to increase the evaporation area. The evaporating flask was kept under negative pressure by a vacuum pump. The evaporation flask is placed in a water bath for constant temperature heating while rotating, and the solution in the bottle is heated, diffused and evaporated in the rotating flask under negative pressure. The rotary evaporator system can be sealed and decompressed to 400-600 mm Hg; the solvent in the distillation bottle is heated with a heating bath, and the heating temperature can be close to the boiling point of the solvent; at the same time, it can also be rotated at a speed of 50-160 rpm. Make the solvent form a thin film and increase the evaporation area. In addition, under the action of the high-efficiency cooler, the hot vapor can be quickly liquefied and the evaporation rate can be accelerated.

Rotary Evaporator Model:

ZZKD Machinery has been focusing on the R&D and production of rotary evaporators for many years. It is one of our main products. After many upgrades, there are more and more models and types of rotary evaporators, more and more perfect functions, and a lot of appearance. big change. At present, our rotary evaporators are divided into the following types:

Re Series Small Capacity Rotary Evaporator:

There are four types of RE series small-capacity rotary evaporators: RE-201D (1L Rotary Evaporator), RE-301 (3L Rotary Evaporator), RE-501 (5L Rotary Evaporator), RE-5299 (0.25L-2L Rotary Evaporator) Evaporator)

RE-201D (1L Rotary Evaporator)and RE-501(5L Rotary Evaporator)

Re Series Small Capacity Automatic Lifting Rotary Evaporator:

There are three models of RE series small-capacity automatic lifting rotary evaporator: RE-2000A (1L Rotary Evaporator), RE-2000B (1L Rotary Evaporator), RE-2000E (1L Rotary Evaporator)

RE-2000B(1L Rotary Evaporator)and RE-2000E (1L Rotary Evaporator)

Re Series Large Capacity Rotary Evaporator:

There are three types of RE series large-capacity rotary evaporators: RE-1002 (10L Rotary Evaporator), RE-2002 (20L Rotary Evaporator), RE-5002 (50L Rotary Evaporator)

RE-1002 (10L Rotary Evaporator)and RE-5002 (50L Rotary Evaporator)

Re Series Large Capacity Automatic Lifting Rotary Evaporator:

There are two models of RE series large-capacity automatic lifting rotary evaporator: RE-5002B (50L Rotary Evaporator), RE-2002B (20L Rotary Evaporator)

RE-5002B (50L Rotary Evaporator)and RE-2002B (20L Rotary Evaporator)

Re Series Large-capacity Explosion-proof Rotary Evaporator:

There are three types of RE series large-capacity explosion-proof rotary evaporator: EXRE-1002 (10L Rotary Evaporator), EXRE-2002 (20L Rotary Evaporator), EXRE-5002 (50L Rotary Evaporator)

EXRE-1002 (10L Rotary Evaporator)and EXRE-5002 (50L Rotary Evaporator)

R Series Automatic Lifting Rotary Evaporator:

There are four types of R series automatic lifting rotary evaporator: R-1005 (5L Rotary Evaporator), R-1010 (10L Rotary Evaporator), R-1020 (20L Rotary Evaporator), R-1050 (50L Rotary Evaporator)

R-1005 (5L Rotary Evaporator)andR-1050 (50L Rotary Evaporator)

RE series small-capacity rotary evaporators are mainly basic instruments necessary for chemical, pharmaceutical, universities, scientific research laboratories and other units. When used, they need to be equipped with desktop circulating water vacuum pumps and low-temperature cooling liquid circulating pumps. The desktop circulating water vacuum pump uses circulating water as the working fluid to provide vacuum conditions for the rotary evaporation process. The low-temperature coolant circulation pump adopts the principle of mechanical refrigeration for low-temperature cooling, and the lowest temperature can reach -120°C.

RE series large-capacity rotary evaporators can be used to recover and evaporate organic solvents. Under vacuum conditions, constant temperature heating. The rotary bottle rotates at a constant speed, and the material forms a large-area film on the wall of the bottle to evaporate efficiently. The evaporated solvent is cooled by a high-efficiency glass condenser and recovered in a collection bottle. The large-capacity rotary evaporation greatly improves the evaporation efficiency, and is especially suitable for the concentration and purification of materials that are easy to decompose and deform at high temperatures. The RE series large-capacity rotary evaporator also needs to be equipped with a desktop circulating water vacuum pump and a low-temperature coolant circulating pump.

The Structure of the Rotary Evaporator:

The rotary evaporator is mainly composed of: motor, distillation bottle, vacuum system, heating pot, condenser tube and other parts.

R-1020(20L Rotary Evaporator)

1. Rotary motor

The operation of the rotating motor needs to be driven by electricity, and the operation of the motor on the rotary evaporator requires uniform speed operation, so that the distillation flask is driven to rotate at a uniform speed. It should be said that this type of rotation is more in line with various experiments. required.

2. Evaporation glass tube

Here we mainly understand the two important functions of the evaporation glass tube. On the one hand, the evaporation glass tube can achieve the purpose of supporting and protecting when the sample is rotated. Another function is that the political and legal glass tube can realize the vacuum device to extract the sample.

3. Vacuum device

It should be known that the vacuum device on the rotary evaporator can greatly reduce the overall air pressure on the rotary evaporator, which is conducive to the normal operation of the experiment.

4. Fluid heating pot

The main function of such accessories on the distillation apparatus is to heat the sample, and then control the required temperature better to achieve the required temperature.

5. Condenser tube

The main purpose of use: to condense the sample for easy collection.

Supporting Equipment for Rotary Evaporator:

The rotary evaporator needs to be equipped with a low-temperature cooling liquid circulation pump and a circulating water vacuum pump for use.

10l Rotary Evaporator Supporting Equipment

Low Temperature Coolant Circulation Pump:

The main function is the cooling cycle, which provides the cooling source for the rotary evaporator. There are many types of it. Different types of low-temperature coolant circulation pumps have different capacities and minimum refrigeration temperatures. The equipment should be selected according to the type of rotary evaporator.

Circulating Water Vacuum Pump:

The main function is to provide a vacuum environment for rotary evaporation. The circulating water vacuum pump is divided into two types: desktop and vertical. Small rotary evaporators are usually equipped with a desktop circulating water vacuum pump.

Process of 5l Rotary Evaporator

Process of Rotary Evaporator:

1. Turn on the power, turn on the cooling system - turn on the main switch, power switch, wait for the instrument to self-check for 60 seconds, when the cooling light is not flashing, turn on the circulation pump button, the cooling button, and set the cooling temperature;

2. Connect the rotary evaporator, make the water bath pot flush with the liquid level in the bottle, turn off the vent button of the rotary evaporator, turn on the vacuum pump, and let go only when the vacuum degree is greater than 0.04 MP;

3. Turn on the rotary button and adjust the speed. The speed should not be too high at the beginning to prevent bumping. Turn on the temperature button and set the appropriate temperature according to the boiling point of the solvent to be evaporated;

4. When the liquid drops fall evenly in the distillation bottle, the rotary steaming starts;

5. Hold the flask with your right hand, and slowly open the air valve with your left hand to deflate; when the vacuum degree drops by 0.04MP, turn off the vacuum pump and remove the rotary steamer;

6. Turn off the water bath heating; turn off the condensation cycle; (turn off the refrigeration button, circulation pump button, power button, and rear main switch in turn);

7. Dispose of the condensed waste liquid in time and clean up the instrument area; 8. When you stop using it, turn the rotary knob to a small position, turn off the rotary switch, and unplug the power plug in time.

Application Fields of Rotary Evaporator:

Rotary evaporators are mainly used in concentration, crystallization, drying, separation and solvent recovery in pharmaceutical, chemical and biopharmaceutical industries. The principle is to heat at a constant temperature under vacuum conditions to make the rotary bottle rotate at a constant speed, and the material forms a large-area film on the bottle wall and evaporates efficiently. The solvent vapor is cooled by a high-efficiency glass condenser and recovered in the collection bottle, which greatly improves the evaporation efficiency. It is especially suitable for the concentration and purification of biological products that are easy to decompose and denature at high temperature.

5l Rotary Evaporator Installation

Advantages of a Rotary Evaporator:

1. High Vacuum Sealing Performance:

The sealing ring is made of PTFE to ensure strong acid and alkali corrosion resistance and vacuum tightness;

The ultimate vacuum value can reach 1mabr, and the vacuum leakage rate is lower than 1mbar/min;

2. Performance and Safety of Heating Pot:

·Electric lifting;

·Heating pot temperature range (20~180) ℃, temperature control accuracy: ±1 ℃, temperature digital display, convenient for recording and control at any time;

The material of the heating pot is V4A (1.4404), dual-purpose for water and oil, and the bottom is equipped with a drain valve, which is convenient for replacing the heating medium;

The heating coil is built inside the heating pot without any exposed components, which is convenient for cleaning the heating pot;

The heating pot can automatically monitor the liquid level. When the liquid level is too low, it can automatically replenish liquid to avoid the risk of dry burning. At the same time, it has an overflow port and a bottom drain valve to prevent the heating medium from overflowing;

3. Operation Panel:

50l Rotary Evaporator Control Panel

·Touch screen control panel, which can display all set parameters and actual parameters;

The surface of the operation panel is made of reinforced glass to avoid contamination and corrosion caused by liquid splashing on the panel; it has excellent mechanical, chemical and thermal stability, and the protection level can reach IP42;

·All parameters can be controlled individually through the touch screen, and have the function of turning on or off at the same time with one key;

Features of the Rotary Evaporator:

1. Lifting structure: automatic lifting of the main machine, seesaw buttons, electric contact mechanical retractable principle, hydraulic auxiliary push, rapid lifting of 0~150 mm;

2. Control mode: dual control and dual display of temperature and speed;

3. Main components: antirust aluminum alloy, special engineering plastics, high temperature resistant glass. Compact structure, beautiful appearance, durable;

4. Main engine transmission: DC brushless motor, electronic stepless speed regulation, and synchronous belt transmission device. Increase the aperture of the drive shaft tube, so the evaporation pipe is 1.5 times larger than the general instrument, and the evaporation efficiency is improved;

5. Sealing components: double seals made of Teflon and fluorine rubber, good air tightness, long service life, can be removed for cleaning or replacement regularly;

6. Condenser: vertical, high-temperature-resistant glass exquisite double-reflux integrated ball-milling mouth condenser with ball-milling mouth collection bottle to achieve quick loading and unloading;

7. Heating pot: Teflon aluminum alloy composite pot is used, and the fully enclosed electric heater is installed on the base of the aluminum alloy pot, which is stable and reliable, and can be flexibly configured.

How to Choose a Suitable Rotary Evaporator?

1. First of all, pay attention to the material selection of the instrument.

2. You can choose automatic lifting or manual lifting according to your own requirements.

3. Another thing to pay attention to is the difference between water bath and oil bath. When your experiment temperature is too high, it is recommended to buy an evaporator for oil bath.

4. Whether the glass is explosion-proof, for your safety, please pay attention to this item.

5. The tightness of the rotary evaporator.

6. The power of the water bath.

7. Speed and speed regulation.

8. Whether it supports continuous feeding when using.

Precautions for Using the Rotary Evaporator:

1. When using, first draw a small vacuum (to about 0.03MPa), and then turn on the rotation to prevent the distillation flask from slipping; when stopping, first stop the rotation, hold the distillation flask by hand, and ventilate the atmosphere, and wait until the vacuum degree drops to about 0.04MPa. Stop the vacuum pump to prevent the distillation bottle from falling off and sucking back.

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 before the heating tank is powered on, and dry heating without water is not allowed.

4. If the vacuum degree is too low, check the airtightness of each joint, vacuum tube and glass bottle.

5. When rotary evaporating air-sensitive substances, connect a nitrogen balloon to the exhaust port, pass a burst of nitrogen gas first, discharge the air in the rotary evaporator, and then connect the sample bottle to rotary evaporator. After steaming, release nitrogen to increase the pressure, then turn off the pump, then remove the sample bottle and seal it.

6. If the viscosity of the sample is very high, the rotation speed should be slowed down, and the rotation speed should be slowed down by hand, so as to form a new liquid surface and facilitate the evaporation of the solvent.

Maintenance Method of Rotary Evaporator:

1. Check the instrument carefully before use, whether the glass bottle is damaged, whether the interfaces are consistent, and handle with care.

2. Wipe each interface with a soft cloth (you can replace it with a napkin), and then apply a little vacuum grease. Vacuum grease must be covered after use to prevent lime sand from entering.

3. The connectors should not be screwed too tightly, but should be loosened regularly to avoid the connectors being seized by long-term locking.

4. Turn on the power switch first, and then let the machine run from slow to fast. When stopping, make the machine stop, and then turn off the switch.

5. The PTFE switches everywhere should not be tightened too hard, as it is easy to damage the glass.

6. After each use, you must use a soft cloth to wipe off all kinds of oil stains, stains, and solvent residues left on the surface of the machine, and keep it clean.

7. Unscrew each PTFE switch after stopping the machine, and the PTFE piston will be deformed if it is still in the working state for a long time.

8. Clean the sealing ring regularly. The method is: take off the sealing ring, check whether there is dirt on the shaft, wipe it clean with a soft cloth, then apply a little vacuum grease, and reinstall it to keep the shaft and the sealing ring smooth.

Why Choose Us

Professional extraction equipment manufacturer

Zhengzhou Keda Machinery Equipment Co., Ltd. is a family integrating production and trade. Our main product is laboratory extraction equipment. Rotary evaporator is one of our main products for sale. Our rotary evaporator models are: R series And RE series, 2L rotary evaporator, 5L rotary evaporator, 10L rotary evaporator, 20L rotary evaporator, 50L rotary evaporator, and can also be customized according to your needs. The company has been established for more than ten years, serving domestic and foreign Tens of thousands of companies and individuals have provided equipment solutions, which have won unanimous praise from domestic and foreign customers.

Fast delivery

We have warehouses in Los Angeles in the United States, Valencia in Spain, and Thailand. We can choose the nearest warehouse for delivery according to the customer's geographical location, ensuring that the customer receives the goods quickly.

Perfect after-sales team

We provide a one-year warranty service for the products we sell. We have a professional after-sales team to deal with customers' after-sales problems, and can provide corresponding technical guidance through videos and other methods.

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