Device for automatically adding water to heating pot in rotary evaporator based on lever principle

Abstract

The invention relates to the technical field of food detection, and discloses a device for automatically adding water to a heating pot in a rotary evaporator based on a lever principle. The device comprises a workbench, wherein a water bath pot is fixedly connected above the workbench to heat a rotary bottle to improve the evaporation speed; through water evaporation, the water level drops to drive a suspension ball to move downwards, so that water in the water bath pot can be automatically added, the water in the water bath pot is prevented from being evaporated due to high temperature, and the effect of liquid heating and evaporating in the rotary bottle is avoided. At the same time, the damage to the water bath pot is avoided, the buoyancy decreases after the water level drops, and a spring pulls the suspension ball downwards, so that an arc-shaped plug is rapidly opened, and the sensitivity of the whole device is increased; an arc-shaped hole is arranged in an overflow pipe, and the overflow pipe is connected with a water outlet, so that the damage to instruments caused by too a high water level is avoided; and a handle, a steel wire and the arc-shaped plug which are arranged on the front surface of the water bath pot are matched with each other, so that automatic water supply can be achieved, and self-service control can be realized.

Description

technical field [0001] The invention relates to the technical field of food detection, in particular to a device for automatically adding water to a heating pot in a rotary evaporator based on a lever principle. Background technique [0002] Food is the most important thing for the people. However, with the development of society, people's living standards have been continuously improved. The problem of food and clothing has been raised to the level of healthy and safe food. The majority of people have also begun to pay attention to the health of their daily diet. More and more attention is being paid to illegal traders, who often add illegal preservatives and coloring agents to food in order to make small profits. Therefore, in order to ensure food safety, the detection of food ingredients is particularly important. [0003] Food is usually composed of carbohydrates, fat, water and protein. In order to ensure the freshness of food and prolong the storage time of processed f...

AI Technical Summary

Problems solved by technology

[0003] Food is usually composed of carbohydrates, fat, water and protein. In order to ensure the freshness of food and prolong the storage time of processed food, legal and appropriate additives are generally added during processing. In order to avoid adding too many additives, There is a special food testing department that will sample and test food for supervision. In the process of testing, it is usually necessary to use an instrument such as a rotary evaporator, and use a water bath to distill the tested samples. The distillation flask is rotated continuously. A layer of liquid film is always attached to the wall of the bottle to increase the evaporation area, thereby speeding up the evaporation rate. However, due to the long distillation time during use, it is necessary to keep sufficient water in the water bath to avoid water evaporation caused by continuous heating. Dry, it will cause damage to the experimental equipment, and indirectly lead to higher cost of food testing, and the traditional equipment needs someone to watch it all the time, and it cannot automatically add water when the water level drops, and the testing personnel need to add water to the water bath , because continuous heating evaporates faster and the number of water additions is more, people cannot carry out other experiments at the same time, wasting a lot of labor

[0004] In order to solve the above problems, the inventor proposed a device based on the lever principle to automatically add water to the heating pot in the rotary evaporator. It ensures the use of this device in the process of food testing, and the automatic addition of water through the water bath ensures sufficient evaporation, avoids damage caused by water drying, reduces experimental costs, and improves staff utilization

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