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Invitation to the 25th China Environmental Protection Exhibition

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?

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.

04

2019

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03

Failure analysis and quality requirements of screw pump seals

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

2019

/

01

Common Faults and Troubleshooting of Water Pumps

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.

17

2019

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01

What are the reasons why a screw pump is not sucking liquid?

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:

17

2019

/

01

Inspection quality standard for screw pump shafts

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.

17

2019

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01

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