BREAKING DOWN AND LOOSENING APPARATUS FOR CAKED LOOSE MATERIALS IN HOPPERS Russian patent published in 2007 - IPC B08B5/02 B65D88/70 

FIELD: apparatuses for breaking down and loosening caked loose materials in hoppers, possibly in metallurgical, building, mining, food making and other branches of national economy.

SUBSTANCE: apparatus includes accumulation chamber communicated with pneumatic main line for feeding compressed air, exhaust branch pipe and air release mechanism. Apparatus includes in addition unit for increasing pressure in accumulation chamber. Said unit is in the form of three annular flanges arranged along the same axis; upper and lower flanges are provided with rigid bottoms. Elastic diaphragms are fastened between said flanges for restricting together with flange bottoms two chambers. One of said chambers is provided with inlet and outlet non-return valves communicated respectively with pneumatic main line and with accumulation chamber. Second chamber is communicated with pneumatic main line and with atmosphere through control mechanism having valve device and communicated with chamber by flow-through ducts. Said valve device is in the form of freely moving cylinder with rod. Diaphragm of second chamber is provided with pressure member turned to side of diaphragm of first chamber and joined with rod of cylinder of valve device. Surface area of diaphragm of second chamber consists of 1.3 - 3 surface areas of diaphragm of first chamber.

EFFECT: enhanced effectiveness of breaking down and loosening caked materials.

2 dwg