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预计在1991年,市场上会出现以纯为工作介质的凿岩机。在南非kloof采金公司(属金田公司集团)和其他地方使用的水力凿岩机,采用98%的水和2%的添加乳化剂。添加剂是一种无油耐腐蚀的合成产品。纯水经水力换能器间接驱动凿岩机。为了变换两相之间的能量,这种装置采用双作用往复活塞,一侧有水,乳化剂在另一侧。可选择成比例的活塞面积以获水与乳化剂的压力比,适应水力供压范围。一台换能器可同时驱动三台凿岩机。
It is estimated that in 1991, purely working rock drills will appear on the market. Hydraulic rock drills used by kloof Gold Mining (a member of the Gold Fields Group) in South Africa and elsewhere use 98% water and 2% emulsifier. Additive is an oil-free, corrosion-resistant synthetic product. Pure water indirectly drives the rock drill by hydraulic transducers. In order to change the energy between the two phases, this device uses a double-acting reciprocating piston with water on one side and emulsifier on the other side. The proportional piston area can be chosen to obtain the pressure ratio of water to emulsifier and adapt to the hydraulic pressure range. A single transducer can drive three rock drills simultaneously.