SGZ-type three-foot automatic bottom discharge centrifuge for three foot-type scraper bottom discharge, intermittent operation, automatic centrifuge filtration process control, through the advanced PLC programmable controller, using variable frequency speed controller, and brake system moving units, and hydraulic (or pneumatic) pieces of combination of stand-alone computer network with the main control center. Hydraulic and electric control system for automatically feeding, separation, washing, dewatering, discharge and other processes, can realize long-distance operation, can be used with solid-phase particle size 0.005-0.15 mm particle suspension liquid separation, the aircraft No clutch, no brakes tiles, especially suitable for heat sensitive strong, and does not allow grain crushing, the operator should not be close to the separation of materials, are fully applicable to inflammable, explosive, toxic, corrosive to the work site. The aircraft has a high degree of automation to handle large amount of separation is good, stable running, convenient operation, etc., can realize all-round clean, safe and reliable, in line with GMP standard. Is widely used in solid granular suspension for the filtering. Chemicals, gypsum, acetic acid, together two urea; Food: MSG, food additives, pharmaceuticals, vitamins, antibiotics, caffeine. Mining and metallurgy of copper, zinc, aluminum, mineral materials, metal refining; environmental protection; water sludge, sewage sludge.