从材料力学方面分析碳黑洗涤泵断轴原因。得出推力的增大是主要原因。分析在较大推力下泵轴的破坏形式 ,从维修装配上制定措施。分析振动增大的原因 ,并采取相应措施 ,提出对泵的改造 Analysis of the causes of broken shaft of carbon black washing pump from material mechanics. The main reason is the increase of thrust. Analysis of the damage under the larger thrust pump shaft form, from the maintenance of the assembly to develop measures. Analysis of the reasons for the increase of vibration, and take corresponding measures, put forward the transformation of the pump