The rotary evaporator heats the solvent to boiling state through a heater. The evaporator bottle rotates above the heater to evenly heat the solvent during the evaporation process and help improve the evaporation efficiency. Rotation also causes the liquid sample to form a liquid film on the inner surface of the evaporation bottle, increasing the heating area. Under the combined action of heating and rotation, the solvent gradually evaporates to form steam. The steam is cooled by a condenser and re condensed into liquid, which is collected in a collection bottle. The vacuum pump extracts the air from the system, reduces the system pressure, and further improves the evaporation efficiency.

Rotary evaporators are mainly used for continuous distillation of volatile solvents under reduced pressure conditions and are commonly used experimental equipment in fields such as chemistry, chemical engineering, and biomedicine. Including the host (including heater and rotating shaft), evaporator, condenser, vacuum pump, etc. The heater in the host is used to control the temperature, and the rotating shaft drives the evaporator bottle to rotate; Evaporative bottles are used to hold liquid samples; The condenser is used to cool steam and collect liquids; Vacuum pumps are used to reduce the pressure inside the system and improve evaporation efficiency.