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The standard for judging a good centrifugal industrial pump

2025/5/14      view: 1

The standard for judging a good centrifugal industrial pump

The pump body and pipeline need to be free of cracks and water leakage. The pump body and drainage pipeline inside the pump room are well protected, and the suction diameter is not less than the suction diameter of the water pump. The balance plate is adjusted to the appropriate axial displacement. Compliant with standards, the drip of the packing does not cause line leakage, and the packing box does not overheat. Bearings need to achieve flexible rotation of the oil ring, qualified oil quality, and no oil leakage. The temperature of the rolling bearing shall not exceed 75 ° C. The temperature of the sliding bearing shall not exceed 65 ° C, and the maximum clearance of the bearing shall not exceed the specifications in the table below. The standard end face clearance of the coupling is 2-3mm larger than the maximum displacement of the shaft, and the radial displacement is not greater than 0.2mm. The inclination of the end face shall not exceed 1.0 thousandth, and the difference between the outer diameter and aperture of the rubber ring shall be greater than 2mm. The operation and output must meet the requirements, operate normally, and have no abnormal vibration or noise.

The bearing clearance shall not exceed the following table specifications: mm

 Shaft neck/journal

Slide bearing

Rolling bearing

30-50

0.24

0.20

> 50-80

0.30

0.20

>80-120

0.35

0.30

>120-180

0.30

0.30



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