渣浆泵的故障及分析排除方法
一、泵的故障原因及排除方法

泵的常见故障原因及排除方法见表7-1。

1. 故障：泵不出水

故障原因：  1)泵内充液不足2)管路或叶轮堵塞3)吸入管路漏气或轴封海气4)泵转向不对5)叶轮损坏6)发生汽蚀7)泵的最高扬程低于装置杨程
排除方法： 1)继续向泵内充液并放气或抽真空2)清理管路或叶轮3)检查并消除漏气4)改变泵旋转方向5)更换叶轮6)增加吸入压力或降低泵安装高度7)提高泵的扬程或减少装置扬程
2.故障：流量小

故障原因：1)泵规定点扬程低于装置扬程2)吸入管路内窝气3)泵转速低4)泵发生汽蚀5)叶轮部分堵塞6)叶轮损坏或密封环磨损过大7)泵淹没深度小，吸水面产生旋涡，吸入空气8)泵叶轮直径小
排除方法：1)提高泵的扬程或减小装置扬程2)放气及消除吸入管内窝气3)检查原动机及电路4)增加吸入压力或降低泵安装高度5)清理叶轮6)更换叶轮或更换密封环7)增加泵的淹没深度或加防旋涡措施8)检查加大叶轮直径.渣浆泵厂家

Trouble of slurry pump and its analysis and elimination

I. causes of pump failure and troubleshooting

See table 7-1 for common fault causes and troubleshooting methods of the pump.

1. Fault: pump does not discharge water

Causes of failure: 1) insufficient liquid filling in the pump 2) blocked pipeline or impeller 3) air leakage in the suction pipeline or sea air in the shaft seal 4) improper rotation of the pump 5) impeller damage 6) cavitation 7) the maximum head of the pump is lower than the unit head

Troubleshooting: 1) continue to fill the pump with liquid and bleed or vacuum 2) clean the pipeline or impeller 3) check and eliminate air leakage 4) change the rotation direction of the pump 5) replace the impeller 6) increase the suction pressure or reduce the installation height of the pump 7) increase the head of the pump or reduce the head of the device

2. Fault: small flow

Fault causes: 1) the specified point lift of the pump is lower than the device lift; 2) the air in the suction pipeline is blocked; 3) the pump speed is low; 4) the pump is cavitating; 5) the impeller is partially blocked; 6) the impeller is damaged or the sealing ring is excessively worn; 7) the pump submerged depth is small, the suction surface produces vortex, and the air is drawn in; 8) the straight diameter of the pump impeller is small

Elimination methods: 1) increase the head of the pump or reduce the head of the device; 2) vent the air and eliminate the air pockets in the suction pipe; 3) check the prime mover and circuit; 4) increase the suction pressure or reduce the installation height of the pump; 5) clean the impeller; 6) replace the impeller or replace the sealing ring; 7) increase the submergence depth of the pump or add anti whirlpool measures; 8) check and increase the diameter of the impeller. Slurry pump manufacturer