The seal structure is improved and external seal for drive shaft is added. American 1500en graphite packing is chosen as sealing material for shaft end.
改进密封结构，增加传动轴外置密封体，选用美国1500 en石墨盘根为轴头密封填充材料。
Each rotor impeller is composed of a cast iron frame, a graphite casing, an upper main shaft, a lower main shaft, the graphite impeller and the belt wheel.
转子叶轮由铸铁支架、石墨套管，上部主轴、下部主轴、石墨叶轮和皮带轮构成。
Protection-shaft configuration is adopted. Sliding bearings are made of wear-resistant materials such as silicon carbide ceramic, graphite, tungsten carbide.
采用护轴结构，滑动轴承采用碳化硅陶瓷、石墨、碳化钨等耐磨材料。
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