Centrifugal extractor is a kind of equipment that performs extraction and separation through centrifugal force. According to different structural forms, it can be divided into many types, such as cylindrical type, annular type, box type, wave type, Luwei type, etc. Although their structures are different, their working principles are similar.

Taking the cylindrical centrifugal extractor as an example, it consists of motor, transmission device, drum, light phase and heavy phase separation channel and outlet, mixing chamber and other parts. During the working process, the light phase and heavy phase liquids enter the mixing chamber from the lower inlet, and then enter the drum after full mixing and mass transfer. Under the action of centrifugal force generated by the high-speed rotation of the drum, the mixed liquid is separated into heavy phase and light phase liquids, which are finally discharged from their respective outlets.

Centrifugal extractors have the advantages of high mass transfer efficiency, small retention volume, and small equipment volume. They have been widely used in petroleum refining, chemical industry, medicine, food, military industry and other industries. However, the traditional annular gap centrifugal extractor has some problems. For example, the drum deflects greatly during high-speed rotation and may collide with other parts, posing safety risks.

In order to solve these problems, Zhengzhou Tiei Extraction CWL-M series centrifugal extractors adopt a top-suspension structure, which avoids the problems of traditional centrifugal extractors. This model also has an automatic correction device for the adjustable drum and spindle, which can automatically correct the spindle to a vertical position, and can easily adjust the size of the heavy and light phase liquid outlet.

Compared with the traditional annular gap structure, Zhengzhou Tiei Extraction CWL-M series centrifugal extractor has the following characteristics: it adopts a top-suspension structure, there are no bottom bearings and mechanical seals in the processing area, and there is no risk of leakage, maintenance costs and worker labor intensity are greatly reduced. An online cleaning system that meets GMP standards is optional. A variety of mixing structures are available, which can be applied to systems that are easy to emulsify, with thorough mixing and high extraction rate. The structure is simple, modular manufacturing is adopted, and the processing cycle is shorter. The operation is unmonitored, the processing capacity is larger, and it is more energy-saving(with the same processing capacity, its power consumption is 1/3 to 1/10 of the traditional annular structure centrifugal extractor). The equipment is constructed of perfluoropolymer materials, which can withstand the corrosion of concentrated sulfuric acid, hydrochloric acid, mixed acids and organic solvents. When replacing heavy-phase components, there is no need to disassemble the motor and bearings, and ordinary workers can complete it, making the operation simple and convenient. The centrifuge can adapt to intermittent and continuous operation; the liquid residence time is short, the residual amount is small, and the internal circulation of heavy or light phases can be realized; each extraction machine is roughly equivalent to a theoretical extraction stage, and it takes a short time to reach equilibrium.

With the continuous advancement of science and technology and the continuous expansion of application fields, the performance and functions of centrifugal extraction machines will be further improved and improved.
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