Safety protection system for drilling and spraying orifice

• Main Authors: FANG LIANGCAI, ZHANG SHIHUAN, SU LIJUN, ZHOU RUHONG, ZHANG SHIKUO, LI YONG, BAI FASONG, CAO XUEJUN, YUAN LIANG
• Format: Patent
• Language: Chinese; English
• Published: 16.09.2009
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

A safety protection system for drilling and spraying orifice is characterized in that the system comprises an orifice multi-way device which is provided with a drill rod channel, an extensible connecting pipe made of high-intensity filament fiber cloth, a flexible steel wire helically arranged is sewed in an interlayer of the high-intensity filament fiber cloth, a pair of soft coal storing and slag discharge devices which are symmetrically connected on the outlet openings on two sides of a three-way slag discharge device, and a coal gas purifier provided with a dust collecting box; one side wall of the dust collecting box is communicated with an extracting and mining channel of the orifice multi-way device through a gas inlet pipe, and the other side wall thereof is communicated with the extracting and mining channel through a gas outlet pipe. The utility model can ensure that the drill rod normally advances, retreats and rotates, meanwhile, not only the forward jetting of the coal and the methane gas in the