This unit is a new product researched and developed by our factory on the basis of similar products at home and abroad. It integrates multi-functional extraction, vacuum concentration and solvent recovery, which simplifies the operation procedure. At the same time, the entire extraction concentration and recovery is carried out in a closed flow path. Therefore, the phenomenon of “running”, “rising” and “leakage” is avoided, and the dregs can be electrically lifted to improve the working environment and reduce energy consumption. The parts in contact with the unit are all made of stainless steel and meet GMP requirements. It is suitable for the extraction, concentration and recovery of organic solvents in Chinese herbal medicines, fruit juices, etc. in hospitals, pharmaceutical factories and food industries