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水泵軸封發(fā)熱或壽命短故障原因
故障原因：填料密封1)填料壓的太緊2)填料未串水水或串水未對準(zhǔn)填料環(huán)3)填料室與軸不同心4)軸或填料軸套磨損
機(jī)械密封1)機(jī)封彈資壓緒量過大壓得太緊2)機(jī)封選型不當(dāng)3)機(jī)封的冷卻沖洗不當(dāng)4)發(fā)生干磨5)介質(zhì)不潔
排除方法：1)適當(dāng)放松填料密封2)加串水或調(diào)整密封環(huán)對準(zhǔn)串水口3)更換填料室4)修理或更換軸、軸套
1)調(diào)整彈簧壓縮量2)按密封腔壓力、溫度選擇合適的機(jī)封型式及材料3)按密封腔溫度、壓力正確選擇機(jī)封的冷卻沖洗方法4)正確選擇沖洗、放氣等，防止泵發(fā)生汽蝕5)采取措施清潔介質(zhì)，或改變摩擦副材料
二、故障原因分析、確定具體原因
從表7-1中可以看出，對一種故障，有多種故障原因，只有正確確定具體原因后才能正確排除故障，在現(xiàn)場要正確確定具體原因常是很復(fù)雜困難的工作，只有通過各種儀表及各方面的現(xiàn)象進(jìn)行仔細(xì)、綜合的分析才能得出具體的原因。表7-2介紹了故晾原因現(xiàn)象分析的一些方法。渣漿泵廠家
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
