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高效率气动凿岩机和气动钻车的广泛应用,使矿井空气遭到了油雾的严重污染。由于气动机械的各运动零件是用含油的压缩空气润滑的,因此这些机械在工作时,油液通过空气动力和机械的扩散作用而形成大量的油雾,油雾与废气一起散布到工作面空气中。矿井空气中油雾的浓度与所使用的气动机械的类型、功率、数量、供油装置的技术状况、润滑油质量、工作面的通风情况等有关。
The widespread use of high-efficiency pneumatic rock drills and pneumatic drilling rigs has caused mine air to be seriously polluted by oil mist. Since the moving parts of the pneumatic machinery are lubricated with oil-containing compressed air, when these machines are in operation, the oil forms a large amount of oil mist by aerodynamic and mechanical diffusion and the oil mist and the exhaust air are distributed to the working surface air in. The concentration of oil mist in the mine air is related to the type of pneumatic machinery used, the power, the quantity, the technical condition of the oil supply, the quality of the lubricating oil and the ventilation of the working face.