Detailed introduction
　　I. Working Principle of Aromatic Oil Extraction Tank
　　Aromatic oil extraction tank is used to recover aromatic oil substances. Firstly, traditional Chinese medicine and water containing volatile oil are added into the extraction tank according to a certain technological proportion, and the heat source steam (with jacket) is given to the interlayer. After the volatilization temperature is reached, the amount of steam is adjusted, and the temperature in the tank is maintained for a certain time according to the technological requirements. The volatilized aromatic oil can be cooled through the cooling system, and the cooled medicine can be separated through the oil-water separator. The aromatic oil extraction tank has the advantages of simple operation, reliable process and high recovery efficiency.
　　II. Structural Characteristics of Aromatic Oil Extraction Tanks
　　The main body of the aromatic oil extraction tank is made of high quality 304 stainless steel. All other non-contact parts are made of non-toxic, non-falling and non-adsorbing materials. There is no dead angle in the contact part with the liquid medicine, and the surface treatment is smooth, which avoids the accumulation and stagnation, and is easy to clean. The equipment has reasonable structure design, meets the technological requirements and is easy to clean. The extraction tank is equipped with CIP port, drinking water, steam, condensate, thermometer, pressure gauge, outlet, circulation, inlet, reflux and other process nozzles. Equipment should be equipped with cleaning balls to achieve online cleaning function. The extraction tank is filtered at the bottom, which has a large filtering area; the filter net is firm and has certain strength and is not easy to be damaged; the filter net should be disassembled and easy to clean; the filter net should be based on effective solid-liquid separation. The suction device of the auxiliary equipment of the extraction tank can effectively capture the foam of the medicine, prevent foam overflow, and has the characteristics of easy cleaning. Condenser, an accessory equipment of extraction tank, can effectively condense liquid medicine and has the characteristics of easy cleaning. The auxiliary equipment cooler of extraction tank is easy to clean, and the condensated liquid is effectively cooled below 30 C to optimize the oil-water separation effect.
　　The oil-water separator attached to the extraction tank is easy to clean and can effectively separate the oil and water from the coolant liquid, and has a protective structure to prevent the liquid from flowing into the recovered volatile oil.
　　The filter of accessory equipment of extraction tank can realize continuous operation, which can avoid the accumulation of residue resulting in unobstructed liquid discharge and easy disassembly and cleaning. Electrical part is sealed to ensure that it is not eroded by water. The bottom is equipped with a central heating drum. The upper and lower jackets and the central heating drum can be set up to achieve separate heating. It is easy to ensure that the liquid is in a slight boiling state, avoid boiling, and the heating effect is good.