水泵轴封发热或寿命短故障原因
故障原因：填料密封1)填料压的太紧2)填料未串水水或串水未对准填料环3)填料室与轴不同心4)轴或填料轴套磨损

机械密封1)机封弹资压绪量过大压得太紧2)机封选型不当3)机封的冷却冲洗不当4)发生干磨5)介质不洁
排除方法：1)适当放松填料密封2)加串水或调整密封环对准串水口3)更换填料室4)修理或更换轴、轴套
         1)调整弹簧压缩量2)按密封腔压力、温度选择合适的机封型式及材料3)按密封腔温度、压力正确选择机封的冷却冲洗方法4)正确选择冲洗、放气等，防止泵发生汽蚀5)采取措施清洁介质，或改变摩擦副材料
二、故障原因分析、确定具体原因
    从表7-1中可以看出，对一种故障，有多种故障原因，只有正确确定具体原因后才能正确排除故障，在现场要正确确定具体原因常是很复杂困难的工作，只有通过各种仪表及各方面的现象进行仔细、综合的分析才能得出具体的原因。表7-2介绍了故晾原因现象分析的一些方法。渣浆泵厂家

The cause of water pump shaft seal heating or short life failure

Fault cause: packing seal 1) packing pressure is too tight 2) packing is not filled with water or water is not aligned with packing ring 3) packing chamber is not concentric with shaft 4) shaft or packing sleeve is worn

Mechanical seal: 1) too much pressure thread of mechanical seal; 2) improper selection of mechanical seal; 3) improper cooling and flushing of mechanical seal; 4) dry grinding; 5) unclean medium

Troubleshooting: 1) properly loosen the packing seal 2) add water or adjust the sealing ring to align with the water inlet 3) replace the packing chamber 4) repair or replace the shaft and shaft sleeve

1) adjust the compression amount of spring 2) select the appropriate seal type and material according to the pressure and temperature of the seal chamber 3) select the cooling and flushing method of the seal according to the temperature and pressure of the seal chamber 4) select the flushing and venting method correctly to prevent cavitation of the pump 5) take measures to clean the medium or change the friction pair material

II. Failure cause analysis and determination of specific causes

It can be seen from table 7-1 that for a fault, there are multiple fault causes. Only after the specific causes are correctly determined can the fault be correctly eliminated. It is often very complicated and difficult to correctly determine the specific causes on site. Only through careful and comprehensive analysis of various instruments and phenomena in all aspects can the specific causes be obtained. Table 7-2 introduces some methods for analyzing the phenomenon of the reason for air drying. Slurry pump manufacturer