AUTOMATIC SYSTEM OF PNEUMATIC HYDRO-SPRINKLING AND INHIBITION OF HIGHLY EXPLOSIVE METHANE-AIR MIXTURE (VERSIONS) Russian patent published in 2015 - IPC E21F5/04 E21C35/22 

FIELD: mining.

SUBSTANCE: invention relates to the coal industry and is designed to control and prevent the explosion of dust-methane-air mixture and improvement of mining safety in mines. The technical result of the proposed invention is to neutralise highly explosive accumulation of dust and gas cloud in work areas of mining machines and providing security. To solve this technical problem, three variants of the invention are proposed. In the first two variants the automatic system of pneumatic hydro-sprinkling and inhibition of highly explosive methane-air mixture comprises channels for water and air supply, filters, electronic gauges, methane sensor. The main difference from equivalents is that an electronic control unit is mounted, receiving and analysing signals from the metering devices of methane concentration, pressure of water and air, and which controls the supply of inhibitor. The channels for supply air and water are connected to the spray nozzle blocks consisting of two chambers. Each chamber is connected with separate inlets to spray nozzles. The channel of air supply through the metering device is connected to the cylinders with inhibitor. In the third embodiment the proposed automatic system comprises three separate channels for supplying water, air and inhibitor. The channels are connected with separate inlets to the nozzle block. The nozzle blocks are made in a three chamber design. Supply of inhibitor is regulated.

EFFECT: use of invention enables to improve significantly safety matters at mining operations.

5 cl, 8 dwg