DUST-THROWING GAS-DYNAMIC MORTAR Russian patent published in 2012 - IPC E21F5/14 

FIELD: mining.

SUBSTANCE: mortar includes cylindrical housing, container with dry chemical powder barred with diaphragm at outlet, piston, chamber with preset pressure of gas in it, gas generator. Mortar is started by electric impulse of remotely placed detector tracking the situation independent of its type. Chamber with preset pressure is connected to cavity in which gas generator is located, separated from container with dry chemical powder by membrane to open. Container is provided with movable partitions, the first of them is located with a gap to membrane and has through selection chordwise in its lower part. Mortar housing is provided with elements providing its fastening on carriage or to gas outlet main pipe or to its discharging vertically oriented branch.

EFFECT: improving safety, reliability and efficiency of distance protection of controlled space from fire and explosions upon localisation of these factors at distant approaches from the device independent of type of used detector and mortar space orientation.

10 cl, 6 dwg