What’s the working principle of the rotary evaporator?

As a common evaporator in laboratory and production, rotary evaporator has been widely recognized for its excellent distillation and extraction performance.Today the staff of Lanphan will introduce the working principle and structural features of the rotary evaporator.I hope this article can help users make better use of our products.

rotary evaporator
rotary evaporator

What’s the working principle of the rotary evaporator?

In short ,the principle of the rotary evaporator is electronically controlling the distillation flask to rotate at a constant speed at the optimum speed to increase the evaporation area. At the same time through the vacuum pump to make the evaporation flask in the state of negative pressure. The evaporation flask was heated in a water bath while rotating at a constant temperature, and the solution in the bottle was subjected to heat diffusion evaporation in a rotating flask under a negative pressure.The evaporation system can be sealed to a pressure of 400 to 600 mm Hg; the solvent in the distillation flask can be heated by a heating bath to heat up to the boiling point of the solvent; and the rotation can be carried out at a speed of 50 to 160 rpm to form a solvent film. Increase the evaporation area. In addition, the hot vapor can be quickly liquefied by the high efficiency cooler to accelerate the evaporation rate. The above is the introduction of the working principle of the rotary evaporator.

What’s the structure of rotary evaporator?

Now that we have explained how a rotary evaporator works, let’s see what its structure is.it is mainly composed of six parts:condensing tube, collecting bottle, evaporating tube, rotary motor, vacuum system and bath pan.The condensing tube uses double serpentine condensation, adding a condensing agent such as dry ice and acetone to condense the sample; the collecting bottle effectively recovers the condensed sample, and the sample is cooled and collected through the collecting bottle; the evaporation tube first acts as a sample rotating support shaft, and secondly The sample is aspirated through an evaporation tube vacuum system; the rotary motor drives the evaporation bottle containing the sample by the rotation of the motor; the vacuum system is used to lower the pressure of the rotary evaporator system; and finally the bath is used to heat the sample with water or oil as a medium.

rotary evaporator
rotary evaporator

The working principle and structure of the rotary evaporator have been explained.

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