20L explosion-proof rotary evaporator manufacturer

20L explosion-proof rotary evaporator manufacturerproductIntroduction:

Mainly used for concentration, crystallization, drying, separation, and solvent recovery in the pharmaceutical, chemical, and biopharmaceutical industries. The principle is to heat at a constant temperature under vacuum conditions, causing the rotating bottle to rotate at a constant speed. The material forms a large film on the bottle wall and evaporates efficiently. The solvent vapor is cooled by a high-efficiency glass condenser and recovered in a collection bottle to improve evaporation efficiency. Specially suitable for the concentration and purification of biological products that are prone to decomposition and denaturation at high temperatures. It is an improvement on the basis of ordinary rotary evaporators, including explosion-proof motors, explosion-proof boiler gauges, explosion-proof frequency converters and enclosures, explosion-proof cable conduits, and explosion-proof button switches.

20L explosion-proof rotary evaporator manufacturerStructural features:
1. Using a composite seal of polytetrafluoroethylene and rubber, it can maintain a high vacuum degree.
2. Adopting an efficient condenser to ensure high recovery rate.
3. Continuous feeding is possible.
4. Digital constant temperature control for water bath.
5. Reasonable structure and exquisite materials.
The mechanical structure extensively uses stainless steel and aluminum alloy parts, and all glass parts are made of high-temperature resistant high boron glass. All key electrical components with rubber seals are easily replaced, making it convenient for users to purchase and update.

Installation steps:
1. Rotate the rack on a sturdy workbench near the water source, and if it is uneven, place four hard rubber feet on it.
2. Move the center of the machine head to a height of 48cm from the chassis and tilt it to the right by about 25 degrees to lock the locking nuts on the frame.
3. Fix the electrical control box according to the diagram and plug in the motor five pin plug.
4. Insert the condenser into the machine head interface, adjust each movable joint to make the condenser vertical, and hold it with a fixing clip. The pipe joints of the condenser are facing backwards. 5. Insert the feeding tube into the condenser tube.
6. Connect the collection bottle to the condenser tube and clamp it tightly with the bottle mouth.
7. Insert the rotating bottle onto the right end of the rotating shaft and clamp it securely with the bottle neck.
8. Place the water bath pot under the rotating bottle and add clean water to 2/3 of the pot (tap water should be left for 12 days)
9. Connect the vacuum tube to the vacuum tube connector at the exhaust pipe, and connect the other connector to the vacuum pump or laboratory vacuum switch.
10. Connectors (2) and (3) are connected to the cooling water, and connector (4) is connected to the feeding pipe.

Operation steps:
1. Vacuuming: After turning on the vacuum pump, if it is found that the vacuum cannot be applied, it is necessary to check whether the bottle openings are sealed properly, whether the vacuum pump itself is leaking, whether the sealing ring at the shaft is intact, and whether a vacuum switch is connected in series with an external vacuum tube to improve the recovery rate and evaporation speed.
2. Feeding: Using the vacuum negative pressure of the system, the liquid material can be sucked into the rotary bottle through a hose at the feeding port (4), and the liquid material should not exceed half of the rotary bottle. This instrument can continuously add materials. When adding materials, please pay attention to ① turning off the vacuum pump ② stopping heating ③ slowly opening the pipe plug after evaporation stops to prevent backflow.
3. Heating: This instrument is equipped with a specially designed water bath, which must be filled with water first and then powered on. The temperature control scale is 0-99 ℃ for reference. Due to the existence of thermal inertia, the actual water temperature is about 2 degrees higher than the set temperature. The set value can be adjusted during use, for example, if you need a water temperature of 1/3-1/2. Remove the power plug after use.
4. Rotation: Turn on the switch of the electrical control box and adjust the knob to the appropriate evaporation speed. Pay attention to avoiding water bath vibrations and fluctuations.
5. Connect the cooling water.
6. Recycling solvent: Turn off the vacuum pump, turn on the feeding switch to release gas, and remove the solvent from the collection bottle