LOOSE MATERIAL CLASSIFIER Russian patent published in 2008 - IPC B07B1/14 B07B13/05 

FIELD: engines and pumps.

SUBSTANCE: loose material classifier incorporates intake bin, running cylindrical shafts fitted to form a sizing slit, sized material receptacles. The aforesaid shafts represent and upper shaft integrated with a drum, a pusher intended for preventing the sizing slit clogging and a power shat with a feed drum, both shafts running in one direction. The upper shaft runs 2 to 3 times faster than the lower one. To allow material move along the slit and to prevent clogging the later, the drums are furnished with multi-start threads with slot width making b=(3-4)l, where l is the slot length and depth making h= (0.3 to 0.5)l. The angle formed by the horizontal pane and the shafts axes plane varies from 30 to 60 degrees.

EFFECT: higher efficiency of sizing and lower wear of components.

2 dwg