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中小型露天矿山使用的YQ-150A型潜孔钻机本身不带空压机,采用集中供风方式。由于一般压气站离用气设备远,漏风和压降大,而且不便于调整供风量,使钻机经常处于风量和压力不足的状况下工作,钻孔效率低,钻具消耗和电耗都大。1983年7月开始在我矿进行的LY31D-18/7型移动式螺杆空气压缩机单体供风的工业试验,取得了提高钻孔效率、节电、降低穿孔成本的显著效益。
YQ-150A DTH drilling rig used in small and medium-sized open pit mine itself does not come with air compressor, and adopts centralized air supply method. Since the compressor station is far away from the gas equipment, air leakage and pressure drop are large, and it is inconvenient to adjust the air supply volume, the drill is often operated under the condition of insufficient air flow and pressure, the drilling efficiency is low, and the drilling tool consumption and the power consumption are both large. Industrial testing of LY31D-18/7 mobile screw air compressor for air supply started in our mine in July 1983 and achieved remarkable benefits of improving drilling efficiency, saving electricity and reducing perforation costs.