The extractor is applied for several process operations, such as water decoction, warm-immersion, thermal circumfluence, filtration and collation and aromatic oil collection of traditional Chinese medicine, propagation and chemical raw material, and recycling of organic solvent. Yuenta enterprise develops in many aspects, such as safety of application, convenience of operation and obtainments for GMP regulations and so on, based on traditional distilling manufacturing standard in the country: 1. 3-cylinder rotary self-lock drop shutter is applied on the slag door, of which the single-cylinder starts up while two-cylinder rotates and pulls the clamp ring to be clamped and the inclined sickle self-locks as a result. The developed process can solve the problems of leakage that are enhanced by poor air pressure or tripping incidents. 2. Special shape applies for the seal ring on the slag door to make sure reliable sealing performance and long-life of application as static pressure of liquid column or pressure in the tank increases much higher. 3. The inner surface of tank polishes with mirror plate, with transitional filleting weld joint to be cleaned easily and without slag. 4. Collocations, such as all-position CIP cleaner, anti-explosion sight lamp and sight glass, quick-opening sanitary feeder nose in portability, mist eliminator and so on, are made into use for convenient operations. Based on the shape, the QT series distilling tank in Yuenta enterprise can be classified as follows: static state of single-tank, multi-function (including recycle, circumfluence and aromatic oil collection devices), dynamic state of mixing (including anti-explosion mixing system), compulsory circulating dynamic state (including circulation pump and circulation pipeline) To be customized