Rotary evaporator capable of accurately and quantitatively condensing several samples 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 condensing several samples at a time. According to the rotary evaporator, one distilling bottle of an existing rotary evaporator is replaced with a distilling bottle group with at least two distilling bottles, an existing water (oil) bath pot isreplaced with an electric heating belt, and all the distilling bottles in the distilling bottle group 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 and the horizontal plane. A bracket support is arranged below the space between every two adjacent distilling bottles. The lowest liquid surfaceof the working position of each distilling bottle is provided with a drain outlet which is connected with a scale metering thin pipe, the upper side and the lower side of each scale metering thin pipeare each provided with a valve, when the amount of a concentrated solution reaches the designed accurate amount, rotation is instantly stopped, the two valves are switched on and switched off accordingly, and the concentrated solutions in the distilling bottles can be accurately and quantitatively discharged on the premise of not detaching the collectors and not greatly influencing the negative pressure in 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 quantitatively concentrating multiple samples 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 evapor...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a rotary evaporator that can accurately and quantitatively concentrate multiple samples at one time, which solves the low efficiency problem that a rotary evaporator can only distill one sample at a time, and also solves the problem that the negative pressure in the system does not have a great impact The problem of accurate quantitative control of the concentrate under the premise of

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