A kind of control method of cold precipitation temperature in alcohol precipitation process of traditional Chinese medicine

Abstract

The invention discloses a method for controlling the cold sink temperature in the alcohol precipitation process of traditional Chinese medicine, which comprises the following steps: 1) a low-temperature water inlet and outlet regulating valve and a temperature sensor are respectively arranged on the alcohol precipitation tank; 2) the cold sink temperature is set on the controller The temperature T, the cooling time t and the heat preservation and cold sink time are set during the heat preservation and cold sink process. When the temperature fluctuation range of the cold sink exceeds ±1°C, the controller starts to adjust; 3) The controller changes the low temperature by adjusting the opening K. The flow of water is controlled by temperature, where K=0.1*(T0‑Tc)*k*100%=0.1*(T0‑Tc)*(T0‑T) / t*100%; 4) When the temperature drops to the set When the cooling temperature is T, the heat preservation starts. The temperature sensor detects the temperature of the material in real time, and the controller adjusts it in real time. After the set time is reached, the cooling phase ends. The invention can realize the precise control of the cooling rate and the cold sink temperature, and ensures the high-quality grade and uniformity of the final product.

Description

technical field [0001] The invention relates to the field of traditional Chinese medicine pharmacy. More specifically, the present invention relates to a method for controlling the cooling temperature of the traditional Chinese medicine alcohol precipitation process. Background technique [0002] Chinese herbal medicines are first extracted with water, and then add an appropriate amount of ethanol at a certain concentration to remove impurities such as protein and tannin. . The alcohol precipitation process is widely used because of its simple operation steps, relatively low equipment cost, and effective removal of impurities. It has been the preferred separation and removal technology for Chinese traditional medicine manufacturers in recent decades. Therefore, the advanced nature of the alcohol precipitation process and its quality control level are closely related to the safety, stability and effectiveness of traditional Chinese medicine products, which in turn affects t...

AI Technical Summary

Problems solved by technology

Among them, the cooling temperature plays a vital role in the effect of alcohol precipitation: if the cooling stage is too fast, the precipitation particles will be finer and difficult to filter; if the cooling is too slow, the alcohol precipitation time will be prolonged; Too high or too low will affect the precipitation of impurities, affect the quality of the alcohol precipitation supernatant, and even affect the quality of the final product

[0004] At present, the cold precipitation temperature of traditional Chinese medicine alcohol precipitation process is still generally controlled by manual experience, and it is difficult to ensure the uniformity of the product between batches. Therefore, it is necessary to develop a control method for the cold precipitation temperature of traditional Chinese medicine alcohol precipitation process

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