CHAMBER FEEDER OF AIR-CONVEYING PLANT Russian patent published in 1998 - IPC

FIELD: blasting operations; applicable in mining industry for charging of blast holes with explosives. SUBSTANCE: chamber feeder includes loading hopper, batch-weighing chamber, air cylinder provided with radial holes and located inside batch-weighing chamber, shutoff valve attached to air cylinder rod, conveying and air pipelines. Novelty in chamber feeder consists in that air cylinder is placed in casing to form gap between casing and air cylinder. Casing has rests installed on bottom of batch-weighing chamber to form gap between casing and bottom of batch-weighing chamber. Casing has nozzle opposite to throat of conveying pipelines. Chamber feeder has instantaneous air valve mounted on bottom of batch-weighing chamber from outer side and connected with air pipeline. EFFECT: higher charge density of explosives along the entire length of blast hole. 1 dwg