Single stage double suction split closing centrifugal pump is a type of centrifugal water pump that is horizontally installed with single-stage double suction. It has the advantages of high flow rate, moderate head, strong universality, and long service life. It has a wide range of applications in industrial production, agricultural irrigation, and water intake engineering. This article will introduce a common fault in a centrifugal pump - the cause and solution of high bearing temperature in the centrifugal pump.
1, The common reasons for the heating of centrifugal pump bearings are as follows:
1. Poor lubrication: Insufficient lubricating oil in the bearing, or poor quality of lubricating oil.
2. Improper installation or operation: incorrect installation of oil seals, damaged or blocked gaskets, mechanical seal problems, etc.
3. Improper setting of bearing clearance: The clearance left during bearing installation is too small.
4. The bearing is not installed properly.
5. The oil slinger is deformed or damaged.
2, The treatment method for overheating of centrifugal pump bearings is as follows:
6. Check the sealing performance of the oil seal, replace the oil seal, and ensure that the sealing components are clean.
7. Clean the seals with No. 10 engine oil or kerosene, and replace the seals if necessary.
8. Replace the sealing ring: Remove the seal and replace it with a new one according to the original specifications. Consider replacing the original oil seal with a mechanical seal.
9. Replace the spring coil: Reinstall the spring pad, clean it with No. 10 engine oil, install the spring pad as required, and check if the hydraulic cylinder piston rod nut is loose.
10. Check for leaks in the hydraulic system, repair leaks, and replace oil seals if necessary.
3, When working with a centrifugal pump, the following precautions should be taken:
11. Before installation, check if there are any debris inside the pump to prevent them from blocking the rotor gap.
12. Check the smoothness of the pipeline.
13. Before starting work, ensure that the pump is filled with water or conduct a water intake test to check the pump's performance.
14. Check if the direction and speed of the electric motor are consistent with the shaft.
15. Check the wear of the impeller sealing surface and the performance of the sealing components to prevent damage to the machine base or bearings.
16. When the motor load exceeds the rated speed, it must be stopped for maintenance.
