Hello! The working principle of traditional Chinese medicine extraction tank is a simple decocting process. Chinese herbal medicines are soaked in water and heated by steam. After a period of time, the effective components are extracted. The length of decocting time depends on the properties of different materials. Due to the different shapes of Chinese herbal medicines, it is difficult to extract effective components, and there is no uniform regulation. It is recommended that the dosage should not exceed two thirds of the volume of the equipment. When aromatic oil is extracted, the secondary steam is condensed and cooled. Oil-water enters the oil-water separator, light oil is discharged from the upper part of the separator, heavy oil is discharged from the lower part, and water is discharged or refluxed through overflow (see the schematic diagram of nozzle orientation and use and installation for specific process). After the decoction, vacuum drainage is needed, which can not only shorten the drainage time, but also extract the effective residual liquid from the slag to avoid waste. When it is difficult to discharge slag due to arching (commonly known as "bridging"), the lifting cylinder is driven to make the lifting rod reciprocate up and down to help break the arch and discharge slag until the slag is basically discharged.