The so-called extraction equipment is a solid-liquid extraction equipment that separates the effective components of a solid material with a solvent(water or other solvent). Common ones are static extraction tanks, ultrasonic extraction equipment, microwave extraction equipment, and supercritical extraction equipment. Taking ultrasonic extraction equipment as an example, ultrasonic extraction equipment is an extraction device that uses ultrasonic cavitation to accelerate the leaching of active ingredients of medicinal herbs.
In general, the thermal effects, mechanical effects, and cavitation of ultrasonic waves are related to each other. Therefore, the frequency and intensity of ultrasonic waves can be controlled, one of them can be highlighted, and another effect can be reduced or avoided, so as to increase the effective component extraction rate of medicinal materials. The purpose. Some manufacturers have indicated that the advantages of ultrasonic extraction equipment are not only short time, low temperature and high yield, but also provide rational production processes, processes and parameters for large-scale production.
For example, supercritical extraction equipment, the author learned that supercritical extraction has the characteristics of distillation and liquid-liquid extraction, and can be used in the extraction process, and two factors have different volatility differences and molecular affinity between the separated substances at the same time. play a role. Therefore, the supercritical extraction equipment has the characteristics of high efficiency, fast speed and low energy consumption. In the pharmaceutical industry where the Environmental Protection trend is prevailing, supercritical extraction equipment is more suitable for separation from thermal sensitive substances.
Enrichment equipment generally has multi-effect condenser, single-effect condenser and so on. Multi-effect condenser is to use the secondary steam produced by one evaporation concentration as the next source of concentrated heat, and the primary concentrated liquid enters the next concentration through a series pipeline. However, there are many residual effects on the condenser, it is difficult to clean, the effective concentration temperature is high, and the thermal sensitive components are lost more. The single-effect condenser adopts the combination of external heating natural circulation and vacuum negative pressure evaporation. The evaporation speed is fast, the decompression low temperature concentration, the concentration proportion is large, and the cleaning is also convenient. According to the performance and characteristics of the above equipment, users can choose according to actual requirements.
With the steady improvement of extraction and concentration technology, the market for Chinese medicine extraction and concentration equipment has become more and more heavy, and many new types of equipment have gradually emerged. The author has learned that the new type of Chinese medicine extraction and concentration equipment on the market has many advantages. For example, the material will not leak, safe and reliable, easy to use, and high efficiency; The connection hose of the bottom cover and the liquid outlet mainly adopts hard stainless steel fixation and bottom wall effusion.
For example, the tank adopts a straight barrel type, and a lower clamp is added to the lower part, and the bottom wall is used for liquid discharge. This method not only maintains the high concentration difference, speeds up the extraction speed, shortens the extraction time, raises the rate, and can make the canister medicine loose easy to the posterior process slag, easy to use.
In addition, ring filters will be added to the bottom of the extraction equipment tank to increase the area of the filter, which will prevent the filtration nets and pipes from being blocked due to the destruction of the fiber of the medicinal materials caused by the stirring of the pulp and leaves. At the same time, the extraction and enrichment equipment tank also uses a pump injection to force upward countercurrent circulation, which plays a role in stirring.