Extraction tank principle and operation

The working principle of the extraction tank is a simple boiling process. The Chinese herbal medicine is immersed in water and heated by steam. After a certain period of time, the effective ingredients are extracted, and the length of the boiling time is determined according to the properties of different materials. The dosage is due to the shape of the Chinese herbal medicine. The extraction of active ingredients is difficult and can not be unified. It is recommended that the feeding amount should not exceed two-thirds of the volume of the equipment. When the aromatic oil is extracted, the secondary steam passes through the condensation. After cooling, the oil enters the oil-water separator. The light oil is discharged in the upper part of the separator, the heavy oil is discharged in the lower part, and the water is drained or recirculated through the overflow (see the nozzle orientation and the installation diagram for the specific process), and the vacuum is discharged after the boiling, so that the liquid discharge time can be shortened. More importantly, the effective residual liquid in the slag can be exhausted to avoid waste. When the dregs arching (commonly known as "bridge") has difficulty in discharging the slag, the lifting cylinder is driven to make the lifting rod reciprocate up and down to assist the arching of the slag, and the dregs are basically exhausted.