CLOSED PNEUMATIC SEPARATOR Russian patent published in 2003 - IPC

FIELD: apparatuses for cleaning loose materials, possibly in agriculture, flour mill-elevator and combined-fodder industry branches. SUBSTANCE: closed pneumatic separator includes pneumatic separating duct; settling chamber with device for discharging light-weight fraction. Duct is provided with lateral charging window and discharging window in its lower portion. Settling chamber is communicated with delay-action louver- countercurrent air cleaner. Pneumatic separator has diametrical blower. Suction window of blower is communicated with outlet of delay-action louver-countercurrent air cleaner. Outlet diffuser of blower through air supplying and recirculation ducts is communicated respectively with lower and upper portions of pneumatic separating duct. The last is provided with supporting net whose one end is arranged under charging window and whose other end is arranged in lower edge of discharging window. Apparatus for discharging heavy fraction is arranged between pneumatic separating duct and air supplying duct. EFFECT: enhanced efficiency of cleaning loose material, lowered size of pneumatic separator. 1 dwg