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泵的应用很广,泵消耗的能量约占全国电力的20％。提高泵的效率是节约能源的一个重要措施。因此,我们对水泵叶轮采用喷涂工艺来提高泵效率的课题进行了试验研究。一、理论依据泵的效率是受多种因素影响的,除了泵内的机械损失、容积损失、水力损失外,还有旋转圆盘造成的摩擦损失比轴承和填料函中的磨擦损失要大好几倍,且圆盘磨擦力矩与盘壁的粗糙度成正比增加。由此可见,要提高泵的效率,在过流壁面粗糙度
The pump is widely used, the pump consumes about 20% of the national electricity. Pump efficiency is an important measure to save energy. Therefore, we conducted a pilot study of the pump impeller using spraying process to improve pump efficiency. First, the theoretical basis Pump efficiency is affected by many factors, in addition to pump mechanical loss, volume loss, hydraulic losses, but also the friction caused by the rotating disc friction loss than the bearing and stuffing box to be much better Times, and disc friction moment increases in proportion to the roughness of the disc wall. This shows that to improve pump efficiency, over-flow wall roughness