Characteristic：

This machine has the advantage of providing a dynamic counter current extraction method for the traditional Chinese medicine extraction tank group, which has the advantages of labor-saving, energy saving, consumption reduction, short extraction period and high extraction efficiency. Its characteristic is that in each extraction process, the traditional single extraction tank is replaced by the extraction tank group extraction, and the traditional static extraction process is replaced by the dynamic counter current extraction. Therefore, according to the needs of extraction and production of traditional Chinese herbal medicine, the number of flexible combination of extraction tank, effective use of solid-liquid concentration gradient, increase the concentration difference, improve the extraction rate, shorten the extraction cycle.

Working principle:

It is assumed that several extraction tanks are connected to each other to form a series of extraction tanks .the herbal material in each tank are in turn new-loaded herbal materials ,after extraction,the fresh solvent is added to the last tank .the other tanks are successively filled with the extract transferred from the next tank for extraction.the extract is eventually discharged from the front tank ,then the final extract tank discharges to the residue and loads the new herbal into the first extractor tank,so the circular extraction is carried out.

Counter current method is a method for continuous and sufficient contact extraction of medicinal materials and solvents by moving in the opposite direction in the leaching container.The equipment is an efficient continuous dynamic counter current extractor. The continuous counter current extraction equipment is a combination of dynamic extraction, counter current extraction and decoction extraction. While retaining the advantages of many traditional processes, it creates many advantages that these traditional processes cannot achieve: fast extraction speed, sufficient extraction of effective components, high extraction yield, less solvent consumption, high

concentration of liquid medicine, reduction of evaporation and concentration and other subsequent processing technologies, medicine in drum, etc The moving speed of the material particles can be adjusted, so that the extraction time can be adjusted according to the characteristics of the medicinal materials. The medicinal materials can be extracted in a mild dynamic environment. The heating temperature is low, and the effective ingredients are less damaged, so that the impurity content in the medicinal solution is less, which belongs to continuous production and has large processing capacity.