Rotary evaporator capable of accurately and quantitatively recovering several solvents at a time

Abstract

The invention relates to the technical field of chemical experiment devices, in particular to a rotary evaporator capable of accurately and quantitatively recovering several solvents at a time. According to the rotary evaporator, one distilling bottle, one condenser and one collecting bottle of an existing rotary evaporator are replaced with at least two distilling bottles, at least two condensersand at least two collecting bottles respectively, an existing water (oil) bath pot is replaced with an electric heating belt, and the condensers and the distilling bottles are communicated through connectors with porous pipe structures. All the distilling bottles are sequentially connected in series and rotate around the same axis. A down-tilting included angle of 2-44 degrees is formed between the rotating axis of the distilling bottles and the horizontal plane. A bracket support is arranged below the space between every two adjacent distilling bottles. All the condensers are vertically placed side by side. The upper side and the lower side of each collector are each provided with a valve, and a quantitative thin pipe is arranged between each valve and the corresponding side of the corresponding collector. No solvent evaporating, condensing and collecting pipelines are communicated. All the solvents can be accurately and quantitatively recovered on the premise of not detaching the collectors and not greatly influencing the negative pressure of the system.

Description

technical field [0001] The invention relates to the technical field of chemical experiment equipment, in particular to a rotary evaporator, in particular to a rotary evaporator capable of accurately and quantitatively recovering multiple solvents at one time. Background technique [0002] Rotary evaporator is an extraction experimental equipment for vacuum distillation and concentration of materials. It is widely used in experiments such as large-scale concentration, drying, extraction and recovery of samples, especially for rapid distillation of large amounts of solvents. Existing rotary evaporators are usually composed of vacuum pumping devices, heating devices, condensing devices, rotating devices and other components. The principle of rotary evaporators is mainly controlled by electronic equipment, so that the flask rotates at a constant speed at the most suitable speed to form a thin film of solvent , increase the evaporation area, and use a vacuum pump to make the evap...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a rotary evaporator that can accurately and quantitatively recover multiple solvents at one time, solves the low efficiency problem that a rotary evaporator can only distill one sample and recover one solvent at a time, and also solves the problem of accurate and quantitative control of recovered solvents question

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