Disc centrifuge is a kind of vertical centrifuge. The drum is mounted at the end of the vertical shaft and rotates at high speed through a drive device driven by a motor. Inside the drum there is a set of overlapping disc-shaped parts - discs. There is a small gap between the disc and the disc. Suspension (or emulsion) is added to the drum by a feeding tube located at the center of the drum. When suspension (or emulsion) flows through the gap between discs, solid particles (or droplets) settle on the disc under the action of centrifuge to form sediment (or liquid layer). The sediment slides along the disc surface and separates from the disc and accumulates in the largest diameter part of the drum. The separated liquid discharges from the outlet of the drum. The function of the disc is to shorten the settling distance of solid particles (or droplets) and expand the settling area of the drum. The production capacity of the separator is greatly improved by installing the disc in the drum. Solids accumulated in the drum are removed artificially after the separator shuts down, or discharged from the drum through the slag discharging mechanism without shutdown. Disc separator can complete two operations: liquid-solid separation (i.e. separation of bottom concentration suspension), called clarification operation; liquid-liquid separation (or liquid-liquid-solid) separation (i.e. separation of emulsion), called separation operation. The drum is equipped with a stack of conical discs, and a centrifugal separator is used to separate the components of emulsion and low concentration suspension by centrifugal sedimentation method. The disc separator can be operated under sealed, high temperature, low temperature, pressure and vacuum conditions. It can be used to extract butter and juice from milk, purify beer, animal and vegetable oils, transformer oil, concentrate yeast and extract serum from animal plasma, etc. application area 1. Mineral Oil Industry: Purification of Fuel and Lubricating Oil for Marine Main Engine, Land Diesel Engine, Power Station, etc. 2. Dairy industry: clarification and purification of fresh milk, degreasing; 3. Vegetable oil industry: purification and clarification of palm oil, degumming, desoaping, dewatering and dewaxing of vegetable oil refining, etc. 4. Beverage products industry: clarification of beer, juice, beverage, extraction of plant protein, treatment of wastewater, clarification of bioengineering fermentation broth, etc. 5. Starch industry: concentration and classification of starch pulp; 6. Pharmaceutical industry: purification or clarification of antibiotics and biochemical pharmaceuticals during extraction, clarification of traditional Chinese medicine pharmaceuticals, etc. 7. Chemical industry: purification or clarification of chemical raw materials; 8. Wool grease industry: extracting and purifying wool grease from wool washing wastewater; 9. Latex industry: purification and concentration of natural rubber latex; 10. Other industries: laboratory, petroleum, coking, kaolin, pulp recycling, electrolyte treatment, wastewater treatment, environmental protection and so on, as well as animal and plant protein extraction, animal fat extraction and refining, the separation of mixed fatty acids.