【摘要】 文章介绍了采用固液两相流理论设计叶轮、平衡轴向力，间隙密封部位喷焊耐磨合金粉末等措施，使改进型１２Ｍ６×２ｋ 泵较原泵在输送煤水时，效率提高１４ 个百分点，泵的大修寿命提高３ 倍，轴承寿命由平均５０ ｈ 提高至１４００ ｈ 以上更多还原

【Abstract】 Through the design of the impeller and balance axial force based on the theory of two phase flow,and coating the sealing position of clearance through spray welding of powdered wearresistant alloy material,the improved coal water pump is 14% higher in efficiency and has a 3 fold longer overhaul life as copmpared to the original version.The service life of the bearing is increased from 50 h to over 1400 h on average.更多还原