机器的使用寿命和维修期的长短,除受结构和制造质量的影响外,绝大多数是受磨损的影响,造成机械性能过早恶化,以至早期报废,选煤机械也不例外。目前各国都在从不同的角度研究浮选机的耐磨问题,大体有以下几种: 1、采用特殊结构的叶轮。如:美国在叶轮上增设离心泵式叶片;西德推广 Except for the influence of structure and manufacturing quality, the service life of the machine and the length of the maintenance period are mostly affected by wear and tear, resulting in premature deterioration of mechanical properties and even early scrapping. The coal preparation machinery is no exception. At present, all countries are from different perspectives on the flotation machine wear, there are generally the following: 1, the use of special structure of the impeller. Such as: the United States additional centrifugal pump impeller blade; West Germany promotion