Waste liquid continuous collection device of vacuum rotary evaporator

A technology of vacuum rotary evaporation and collection device, applied in chemical instruments and methods, laboratory utensils, laboratory containers, etc., can solve the problems of wasting time, small size, wasting electricity and cooling water, etc.

Inactive Publication Date: 2013-04-24
徐自升 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The problem with the common vacuum rotary evaporator in the laboratory at present is that there is only one waste liquid collection bottle with a small volume. When concentrating a large volume of solution, t

Method used

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  • Waste liquid continuous collection device of vacuum rotary evaporator
  • Waste liquid continuous collection device of vacuum rotary evaporator

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Embodiment Construction

[0008] When using the present invention "a device for continuously collecting waste liquid from a vacuum rotary evaporator" for vacuum concentration, the solvent vapor is pumped into the condenser (1) and cooled by the condenser tube (4), and the liquid droplets are collected by the condenser. The through valve (8) controls the flow into the waste liquid bottle (12) on the left. At this time, the three-way valve of the connecting pipe on the upper part of the left waste liquid bottle is opened, and the drain valve on the lower part is closed. Condenser total three-way valve (8), connection pipe (9) and connection pipe three-way valve (10) and flow in the bottle. When the condensate collected in the bottle is about to be full, the total three-way valve (8) is led to the waste liquid bottle (12) on the right, as mentioned above, the condensate flows into the bottle. At this time, the connecting pipe three-way valve (10) on the top of the left waste liquid bottle (12) can be vent...

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Abstract

The invention discloses a waste liquid continuous collection device of a vacuum rotary evaporator. A condenser master three-way valve is added below a condenser of a traditional vacuum rotary evaporator so as to control condensate to flow into a waste liquid bottle at the left or right side. The two waste liquid bottles at the left side and the right side are used for alternatively collecting the condensate. When one bottle is full and the other bottle is alternated for collection, the concentration process is not stopped. Therefore, when a large quantity of solution is concentrated continuously, the concentration efficiency is improved and the consumption of electricity and cooling water is lowered. The lower part of each waste liquid bottle which is full of condensate is provided with a liquid discharging valve, and an upper connecting pipe is provided with a three-way valve and an air inlet, so that the pressure inside the bottle is balanced and the discharge of the condensate is facilitated. After the liquid discharging valves and the air inlets are closed, the waste liquid bottles can be alternated for collecting condensate next time, so that the waste liquid is collected continuously. The waste liquid continuous collection device has significance for improving the concentration efficiency of chemical liquids in laboratories as well as lowering the waste of water and electricity.

Description

technical field [0001] The invention relates to a device for continuously collecting waste liquid of a vacuum rotary evaporator, in particular to a device for continuously collecting waste liquid of a medium or small vacuum rotary evaporator used in a laboratory. Background technique [0002] Vacuum rotary evaporator is an indispensable routine equipment in chemical and pharmaceutical laboratories, and is widely used in the concentration and chemical synthesis of liquid medicine. Generally, it is composed of several parts such as water bath heating device, round bottom flask, condensation device, vacuum device, waste liquid collection device and control device. Since the liquid is concentrated under negative pressure, the solvent will boil at a lower temperature, which not only improves the concentration efficiency, but also greatly reduces the damage of the solute caused by high temperature and long time concentration. [0003] The problem with the common vacuum rotary eva...

Claims

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Application Information

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IPC IPC(8): B01L3/16
Inventor 吴财郁祁俊徐自升徐漫
Owner 徐自升
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