The utility model relates to a backflow prevention device of a rotary evaporation instrument, which comprises a backflow prevention connecting pipe and a backflow liquid phase collection cover, the backflow prevention connecting pipe comprises a split phase pipe in the center and a joint integrally formed at both ends of the split phase pipe; the split phase pipe is provided with an air communicating channel in the center, and the split phase pipe wall is outwardly annular raised to form several liquid phase drainage grooves, each of which is a liquid phase drainage groove Several leakage holes are evenly arranged on the cover; the return liquid phase collection cover includes two covers, both ends of the two covers are provided with arc-shaped shell edges, and the outer walls of the two covers are sunken inward to form a ring-shaped fixed groove; the phase separation pipe of the anti return communication pipe and the joint are connected to form an arc-shaped depression, which matches the shape of the arc-shaped shell edges. The anti reflux device of the rotary evaporator overcomes the shortcomings of the traditional rotary evaporator, such as the complicated separation and purification process caused by the backflow of the coolant phase and the prolonged time. When it is applied to the segmented distillation, it can ensure the full separation of the fraction in each temperature distillation section.
【技术实现步骤摘要】
一种旋转蒸发仪防回流装置
本技术涉及一种旋转蒸发仪防回流装置。
技术介绍
传统旋转蒸发仪包括带有水浴锅和接头的仪器主体,所述接头上设置电机驱动接头一端旋转,仪器还包括与仪器主体相连接的蒸馏烧瓶、冷凝管、接收烧瓶,其中所述蒸馏烧瓶连接在接头旋转端,所述冷凝管连接在接头固定端,冷凝管下方连接接收烧瓶,便可进行常压蒸馏,当进行减压蒸馏时,可利用蛇形回流冷凝管外接真空泵实现。传统旋转蒸发仪连续蒸馏大量易挥发性溶剂时,伴随着冷凝管的高效冷却作用蒸汽迅速液化后,虽然大部分流入接收烧瓶,但还有一部分于流入或液化于仪器主体接头部分的液体,会原路回流入蒸榴烧瓶,造成分离和纯化的过程复杂、时间延长,应用于分段蒸馏时还会造成蒸馏原液的污染,造成分离物纯度下降。
技术实现思路
本技术要解决的技术问题是如何克服现有技术的上述缺陷,提供一种旋转蒸发仪防回流装置。为解决上述技术问题,本旋转蒸发仪防回流装置包括防回流连通管和活动连接在该防回流连通管上的回流液相收集罩,其中,所述防回流连通管包括位于中央的分相管和一体成型于在该分相管两端的接头;所述分相管中央设有气相通道,分相管管壁向外环形凸起形成若干液相引流槽,各所述液相引流槽上均匀布设若干漏液孔;所述回流液相收集罩包括两个罩壳,两所述罩壳两端均设有弧形壳缘,两个罩壳外壁向内凹陷形成环形的固定槽;所述防回流连通管的分相管与接头连接处形成弧形凹陷,该弧形凹陷与所述弧形壳缘的形状相匹配。如此设计,将本装置安装在旋转蒸发仪的仪器主体与蒸馏烧瓶之间,防回流连通管两端接头分别连接固定仪 ...
【技术保护点】
1.一种旋转蒸发仪防回流装置,其特征是:包括防回流连通管(1)和活动连接在该防回流连通管(1)上的回流液相收集罩(2),其中,/n所述防回流连通管(1)包括位于中央的分相管(11)和一体成型于在该分相管(11)两端的接头(12);/n所述分相管(11)中央设有气相通道(111),分相管(11)管壁向外环形凸起形成若干液相引流槽(112),各所述液相引流槽(112)上均匀布设若干漏液孔(113);/n所述回流液相收集罩(2)包括两个罩壳(21),两所述罩壳(21)两端均设有弧形壳缘(211),两个罩壳(21)外壁向内凹陷形成环形的固定槽(212);/n所述防回流连通管(1)的分相管(11)与接头(12)连接处形成弧形凹陷(13),该弧形凹陷(13)与所述弧形壳缘(211)的形状相匹配。/n
【技术特征摘要】
1.一种旋转蒸发仪防回流装置,其特征是:包括防回流连通管(1)和活动连接在该防回流连通管(1)上的回流液相收集罩(2),其中,
所述防回流连通管(1)包括位于中央的分相管(11)和一体成型于在该分相管(11)两端的接头(12);
所述分相管(11)中央设有气相通道(111),分相管(11)管壁向外环形凸起形成若干液相引流槽(112),各所述液相引流槽(112)上均匀布设若干漏液孔(113);
所述回流液相收集罩(2)包括两个罩壳(21),两所述罩壳(21)两端...
【专利技术属性】
技术研发人员:陈正贵,贾清华,任阿芳,赵丽娟,彭小丽,
申请(专利权)人:四川海润检测有限公司,
类型:新型
国别省市:四川;51
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