BATCH BOX AND PROCESS OF BATCHING OF POWDERY OR GRANULATED MATERIAL Russian patent published in 1999 - IPC

FIELD: measuring technology. SUBSTANCE: batch box includes metering control valve set in action by rocking level via connecting rod. Control valve slides in groove. When control valve is in bottom dead center of its stroke elementary space is formed in front of it. Metering control valve travels to its top dead center forcing metered material into displacement chamber. Process consists in usage of metering control valve sliding in groove of body between top and bottom dead centers and piston located in displacement chamber. Elementary space of metering is partially determined by withdrawal of control valve into bottom dead center with piston being left in position at which it shuts off communication between groove and displacement chamber. Elementary space is isolated after removal of material by screen. EFFECT: provision for accurate adjustment of single dose without change of speed of drive of batch box. 11 cl, 19 dwg