Safe and efficient rotatory evaporator

Abstract

The invention provides a safe and efficient rotatory evaporator. The safe and efficient rotatory evaporator comprises a condensing pipe, a recycling bottle, a rotating device, a buffering bottle, a distilling bottle and an ultrasonic water bath kettle, wherein the top of the condensing pipe is connected with a vacuumizing joint of which the middle is provided with a filter screen; the lower end of the condensing pipe is provided with a left and right through washing pipeline, and the left end of the washing pipeline is provided with a release valve; and the lower end of the right side of the condensing pipe is connected with the rotating device, and the right side of the rotating device is sequentially connected with the buffering bottle and the distilling bottle. The safe and efficient rotatory evaporator has the following advantages that by arranging the buffering bottle between the rotating device and the distilling bottle, the rotatory evaporator prevents the loss and other equipment pollution caused by liquid bumping; by arranging the filter screen, the distilling bottle and the recycling bottle are prevented from being polluted by rubber particles; by arranging the ultrasonic water bath kettle, materials are convenient to transfer, and wastes are avoided; and the rotatory evaporator is simple in structure, convenient to operate, reasonable in design and wide in the range of applications and has wide application prospects, and both safety and evaporating efficiency are obviously improved.

Description

technical field [0001] The invention relates to the field of rotary evaporators, in particular to a safe and efficient rotary evaporator. Background technique [0002] Rotary evaporators are mainly used for concentration, crystallization, drying, separation and solvent recovery in pharmaceutical, chemical and biopharmaceutical industries. The principle is to heat at a constant temperature under vacuum conditions to make the rotary bottle rotate at a constant speed, and the material forms a large-area film on the bottle wall and evaporates efficiently. The solvent vapor is cooled by a high-efficiency glass condenser and recovered in the collection bottle, which greatly improves the evaporation efficiency. It is especially suitable for the concentration and purification of biological products or other chemical intermediates that are easily decomposed and denatured at high temperature. [0003] When the distilled liquid contains foaming substances, it is easy to have bubbles ...

AI Technical Summary

Problems solved by technology

[0003] When the distilled liquid contains foaming substances, it is easy to have bubbles on the liquid surface, or when the temperature of the water bath is too high or the vacuum of the vacuum pump is too high, it is easy to cause the solvent to bump. Splashing, light ones cause distillate loss, severe cases distillation delay or failure; the prior art has a kind of rotary evaporator, in the retort, a cross defoaming frame composed of two crossed glass rods is placed to break the bubbles, its The defect is that the glass rod is rigid, and its length can only be smaller than the diameter of the retort. During the rotation process, the end of the rod will collide with the retort, which is easy to damage the retort, and the cross defoaming rack is put in and taken out. It is very difficult; some people use elastic defoaming net or zeolite, the defect is that when the distillation is finished, the remaining viscous substrate concentration is very thick, it is easy to attach to the net structure or zeolite and cause serious waste, and it needs to be washed. It is troublesome to operate, especially when the distillation residue has a very low melting point and solidifies at room temperature, so that the method of preventing bumping is not practical. In addition, the low melting point distillation residue or part of the solid precipitates are attached to the wall of the retort bottle, which is not easy Easy to take out and transfer to the next reaction

In addition, in the prior art, because the pipes used in the vacuum system are hard rubber pipes, they will age after long-term use, and cracks will appear on the inner surface. When the vacuum degree is adjusted, the solid particles in the leather pipes are easily brought into the distillation bottle and the recovery bottle. , contaminated distillate and recovered reagents

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