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Alarm device of rotary evaporator vacuum system

A technology of rotary evaporator and alarm device, which is applied in vacuum gauges, measuring devices, instruments, etc., can solve the problem of inability to monitor the solvent evaporation process, and achieve the effect of flexible use

Inactive Publication Date: 2014-09-10
CHINESE RES ACAD OF ENVIRONMENTAL SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an alarm device for the vacuum system of a rotary evaporator to solve the technical problem that the solvent evaporation process cannot be monitored during the evaporation process of the rotary evaporator

Method used

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  • Alarm device of rotary evaporator vacuum system
  • Alarm device of rotary evaporator vacuum system
  • Alarm device of rotary evaporator vacuum system

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Experimental program
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Embodiment Construction

[0015] The evaporation process of the rotary evaporator is completed through a vacuum system connected to the sealed container where the sample is placed. The vacuum system continuously draws a vacuum on the sealed container. As the sample solvent is continuously evaporated, the solvent gas in the sealed container is gradually thinned. Gradually increase. A correlation curve is formed between the gas vacuum degree, the concentration of the solvent gas and the content of the sample solvent, and the content of the sample solvent in the sealed container can be accurately measured by testing the gas vacuum degree.

[0016] like figure 1 As shown, the alarm device for the vacuum system of the rotary evaporator of the present invention includes an air inlet joint 01, an air outlet joint 02, a tee joint 03, a pressure transmitter 04, a digital display 05, a buzzer 06 and a switching power supply 07.

[0017] The inlet joint 01 is connected to the first interface 03a of the tee joint...

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Abstract

The invention discloses an alarm device of a rotary evaporator vacuum system and relates to an alarm device of rotary evaporator vacuum system. The alarm device comprises a switch power supply and is characterized by further comprising an air inlet joint, an air outlet joint, a tee joint, a pressure transmitter, a digital display and a buzzer, wherein the air inlet joint is connected with the first interface of the tee joint through a pressure duct, the air outlet joint is connected with the second interface of the tee joint through the pressure duct, the branch pipe interface of the tee joint is connected with the pressure guide joint of the pressure transmitter through the pressure duct, the signal output end of the pressure transmitter is connected with the signal input end of the digital display, the signal output end of the digital display is connected with the buzzer, the input end of the switch power supply is connected with a mains supply, the output end of the switch power supply provides a 24V DC working power supply and is connected with the power supply input end of the digital display. The device in the invention aims at accurately monitoring the evaporation process of sample solvents.

Description

technical field [0001] The invention relates to an alarm device, in particular to an alarm device for the vacuum system of a rotary evaporator. Background technique [0002] Rotary evaporator is a commonly used experimental instrument in chemical laboratories, which can effectively purify certain chemical components through distillation. Rotary evaporators can be used to quickly and gently distill most samples. Rotary evaporators typically use a vacuum system to reduce the air pressure for the distillation process. [0003] In the past, the rotary evaporator did not have a reminder device during the evaporation process, which would lead to excessive evaporation of the evaporated solvent, or even dryness during the evaporation process, which would affect the results of the experiment. What's more, due to the difficulty of sample collection , Some are even one-time samples, which cannot be collected repeatedly, which will cause the scientific research work to lose valuable d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L21/00
Inventor 朱晓华黄启飞杨玉飞雷敏傅海辉何洁杨文于玲
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI