Current status and development of ultrasonic extraction equipment
At present, more and more things are extracted by ultrasonic extraction equipment, and the power of technology is becoming more and more important.
The most used extraction equipment. Use jacket steam to heat the medicinal materials immersed in the solvent, soak and extract. In addition to being suitable for heating extraction, a closed condensing system can also be used to recover volatile oil from medicinal materials; the extraction yield can be improved when the two-stage or three-stage cross-flow extraction process is adopted. The disadvantage is that when the diameter of the tank is too large, the solid matter hinders the heat transfer efficiency, and the material is difficult to fully boil, so that the extraction efficiency is reduced, and a large number of extraction tanks are required for large-scale production.
Multifunctional extraction tank with stirring device. The advantage is that the medicinal powder can be suspended in the solvent under stirring, the heat transfer speed is fast, the diffusion speed is also fast, so the extraction speed is fast and the extraction rate is high. The disadvantage is that the power consumption of medicinal materials to be processed into fine powder is high. The separation of dregs and extracts requires a centrifuge or a plate and frame filter, which consumes more manpower and power.
With the development of the modernization process of Chinese medicine, the variety and quantity of plant extraction will greatly increase. The extraction equipment is required to have the characteristics of large processing capacity, low production cost, low investment, and high safety when using organic solvents. However, the existing extraction equipment and The process is difficult to meet the above requirements. The continuous extraction equipment for traditional Chinese medicine designed according to the principle of continuous leaching of vegetable oil can meet the technical and safety requirements of large-scale industrial production.