A kind of alcohol precipitation control method

Abstract

The invention discloses an alcohol precipitation control method. The alcohol precipitation control method comprises adding traditional Chinese medicine extract and ethanol into an alcohol precipitation tank and stirring them; when the preset stirring time expires, control The device turns off the stirring motor; the radio frequency admittance level gauge detects the alcohol precipitation liquid capacitance and the total liquid level, and the controller calculates the solid-liquid interface height in real time according to the pre-established detection model and the detection results of the radio frequency admittance level gauge; If the height of the solid-liquid interface remains unchanged within the preset time threshold, the supernatant liquid outlet valve is opened to allow the supernatant liquid to flow out. The alcohol precipitation control method provided by the invention can realize the real-time on-line detection of the solid-liquid interface in the alcohol precipitation process of the traditional Chinese medicine and the rapid detection of the end point of the alcohol precipitation of the traditional Chinese medicine, and improve the separation efficiency of the alcohol precipitation process of the traditional Chinese medicine.

Description

A kind of alcohol precipitation control method technical field The present invention relates to Chinese medicine production field, particularly a kind of alcohol precipitation control method. Background technique Chinese medicinal materials are first extracted with water, then add an appropriate amount of ethanol of a certain concentration to remove impurities such as protein, tannin, etc. It is one of the commonly used processes in drug production, and it is also the most commonly used traditional Chinese medicine preparations with clarity requirements such as traditional Chinese medicine oral liquids and injections. refining method. The alcohol precipitation process has the advantages of simple operation steps, relatively low cost and high impurity removal efficiency. In the past ten years, it has been the preferred separation and impurity removal technology for Chinese medicine manufacturers in my country. The control accuracy of the alcohol precipitation process ...

AI Technical Summary

Problems solved by technology

However, since the invention uses the sending and receiving of optical signals to detect the solid-liquid interface, a light source generator needs to be installed in the alcohol precipitation tank, so the cost is high, and it will cause damage to the photosensitive active ingredients in the traditional Chinese medicine alcohol precipitation solution. influences

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