Rotary Evaporator

Structure: the distillation flask but with a standard grinding interface pear shaped orround bottom flask, a highly reflux condensing tube connected with the vacuum pump tosnake through, reflux condensing tube another opening with a receiving flask grinding mouth connected, are used for receiving organic solvent evaporation. Between thecondensing tube and decompression pump one three through the piston, when thesystem is communicated with the atmosphere, can be the distillation flask, solventtransfer liquid receiving flask, take down, when the system and decompression pump is communicated, the system should be in a vacuum state. When in use, should firstdecompression, then start the motor to rotate the distillation flask, the end, should firststop, then through the atmosphere, in order to prevent the distillation flask shedding in rotation. As the distillation of heat source, often with a constant temperature water tankcorresponding.

The 2 Principle

Through the electronic control, the flask in the most suitable speed, constant speed rotation to increase the evaporation area. Through the vacuum pump to make theevaporation flask in the state of negative pressure. The constant temperature heatingevaporation flask are placed in a rotating at the same time in a water bath, bottle of solution under negative pressure in the rotating flask heating diffusion evaporation.Rotary evaporator system can sealing pressure reduction to 400 ~ 600 mm Hg; heatingbath heating the solvent boiling point distillation flask, heating temperature can be close to the solvent; also can be rotated, speed is 50 ~ 160 rpm, allowing the solvent to form a film, increase the evaporation area. In addition, the high efficiency cooler effect, can make the heat steam rapid liquefaction, accelerate the rate of evaporation.

3 main parts

1, rotary motor, drives a rotary motor Sheng evaporation bottles have samples of;

2, the evaporation tube, evaporation tube has two functions, first of all to play the function of the sample rotation supporting shaft, followed by evaporation tube, a vacuum system to sample aspiration;

3, the vacuum system, the air pressure is used to reduce the rotary evaporator system;

4, the fluid heating pot, usually heating of the sample water;

5, a condenser tube, using double serpentine condensation or other agents such asdry ice and acetone condensation condensation samples;

6, the condensed sample collection bottle, the sample after cooling into a collecting bottle.

Mechanical or motor mechanical device is used to heat in boiler evaporation bottle fast promotion.

Vacuum system of rotary evaporator can make water suction pump immersed in cold water bath in simple, also can be a mechanical vacuum pump with cooling pipe. The evaporation and condensation of glass components can be very simple or verycomplex, depending on the goal and characteristics to distillation, distillation solvent.Different business equipment will contain some of the basic features of the modernequipment, such as digital control usually increases the vacuum pump, digital displayheating temperature or steam temperature and other functions.