The production process of Chinese medicine extraction, is based on the GMP standard, according to the given formula, produced by the batch production process, the production of Chinese traditional medicine extract a certain number of products, also called a batch mode of production. Its main features are: small volume, multi species, its features are: dynamic scheduling and allocation of materials flow discontinuities, material and equipment, non steady state of product and process uncertainty and equipment resources. The discontinuity is refers to the material input, output is intermittent, unit operation is sequential, equipment operation is intermittent, non steady state refers to the production process in the material and equipment are often in the state of changing. Uncertainty refers to according to the market demand the production of different products, and the addition of new products.
In order to improve the ability to adapt to the different and similar equipment production process, production equipment needs to have good flexibility of traditional Chinese medicine extraction, can produce a variety of process similar products. The product is finished, the cleaning equipment, can produce another kind of products. The process of Chinese medicine extraction unit, generally installed multiple operating equipment （such as extracting tank, concentrator）， multiple groups of different size and configuration of equipment （such as: buffer tank, tank）， equipment according to series and parallel structures, composition series, parallel structure extraction process unit, using a fixed or non fixed pipeline connecting hose connection unit between the equipment. Equipment in a continuous, semi continuous, intermittent work mode.
The process of extracting unit according to production products division of Chinese medicine, can be a single variety of process unit, many varieties of a single process unit, multi variety and multi process unit single variety process unit production process, the ratio of raw materials and process parameters are determined. Many varieties of a single process unit can produce a family of products with different specifications, the technological process for production of the same products, parameter changes. More and more varieties of process unit can produce a variety of products, production processes and process parameters of product can change. In addition, test process and test process of unit, unit adopts multi variety and multi process.
Commonly used traditional Chinese medicine extraction unit equipment mainly includes: multifunctional extraction pot, heat reflux extraction device, the external circulation vacuum concentrator, internal circulation vacuum concentrator, spherical concentrator, stirring settling tank, cold precipitation tank, centrifuge, filter, distillation, solvent configuration tank, decolorization tank, crystallizer, macroporous adsorption resin elution device, membrane separation / film concentrating device, supercritical extraction device, microwave extraction device, ultrasonic extraction device, tanks etc