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Invitation to the 25th China Environmental Protection Exhibition
Invitation to the 25th China Environmental Protection Exhibition, April 18-20, 2024, Shanghai New International Expo Center, Booth N4·J69. We sincerely invite you to visit.
15
2024
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04
What could be the reason why my newly purchased screw pump is not delivering fluid?
Some users are worried when their newly installed screw pump fails to deliver fluid, and some even doubt the quality of the screw pump. In fact, this phenomenon of a new screw pump failing to deliver fluid is common.
2019
03
Failure analysis and quality requirements of screw pump seals
Statistics from home and abroad show that screw pump seal failures account for 50%-70% of centrifugal pump failures, and aging failures account for 10%-30% of screw pump seal failures. The vast majority are accidental failures, which are the subject of failure analysis.
17
01
Common Faults and Troubleshooting of Water Pumps
One reason is the power supply: If the voltage is too high or too low, and under a specific load, if the voltage fluctuation range is outside 10% to -5% of the rated value, it will cause the motor to overheat.
What are the reasons why a screw pump is not sucking liquid?
When screw pumps are used to pump liquids with low liquid levels, they may occasionally fail to pump liquid. The reason for this is often misunderstood due to a lack of understanding of the liquid suction principle of screw pumps. The main reasons why a screw pump may fail to pump liquid are as follows:
Inspection quality standard for screw pump shafts
Using the screw thread top as a reference, inspect the wear condition of the shaft neck and screw surface. There must be no scratches, and the screw surface roughness must not be less than 1.6. The surface roughness of the thread top must not be less than 0.8. The ellipticity of the shaft neck must not exceed 1/2000 of the diameter.