DEVICE FOR HEATING OF MINE AIR-SUPPLYING SHAFTS Russian patent published in 2003 - IPC

FIELD: mining; applicable in heating of mine air-supplying shafts. SUBSTANCE: device has intercommunicated gas fuel combustion chamber, air duct for supply of warm air to mine shaft, mixing chamber located between air duct and combustion chamber provided with electromagnetic locking mechanism for supply of gas-air mixture to it, mine induced fan for supply of cold air to combustion chamber and gas level control gauge, and provided with relay unit and control panel. Air duct is airtight. Combustion chamber, mixing chamber and airtight air duct are installed in common branch pipe. Gas level control gauge is installed in underground mine working and connected with control panel which is connected to relay unit providing for leading deenergizing of electric igniters of burners in combustion chamber and electromagnetic locking mechanism shutting-off mixture supply to combustion chamber. Methane may be used as gas in gas-air mixture. EFFECT: higher reliability and safety of heating and ventilating system. 2 cl, 2 dwg