Operation and maintenance of centrifugal pumps

As a widely used fluid transport equipment, centrifugal pumps have a vital impact on industrial production, municipal facilities and daily life with their efficient and stable working performance.

Before starting the centrifugal pump, check the installation of the pump and motor to ensure that they are in good condition. Securely fastened to the foundation. Then check the pump's suction and discharge pipes to make sure there are no leaks, blockages or damage to the pipes. Then check the pump sealing device to ensure it has good sealing performance. Then check the pump's bearings and lubrication system to ensure that the quantity and quality of lubricating oil or grease meet the requirements. Also check the pump coupling to make sure it is tightly connected. Finally, check the pump's safety valve and overload protection device to ensure they are working properly.

When starting the centrifugal pump, open the suction valve and discharge valve of the pump to ensure that the pump is filled with liquid. Then start the motor to bring the pump to rated speed. Finally, observe the pump pressure gauge and flow meter to make sure they are within the normal range. When stopping a centrifugal pump, you should first close the pump's discharge valve, then stop the motor, and at the same time close the pump's suction valve.

In the daily maintenance of centrifugal pumps, remember to lubricate and maintain them. The bearings of centrifugal pumps are key components to ensure efficient operation of the pump body. Add or replace lubricating oil regularly to ensure good bearing lubrication, reduce wear and extend service life. For centrifugal pumps with built-in cooling systems, it is necessary to check whether the cooling water supply is smooth to prevent the bearings from overheating. At the same time, pay attention to the leakage of the shaft seal. If the leakage is serious, it should be replaced in time to prevent the loss of medium in the pump and environmental pollution caused by leakage. Centrifugal pump vibration and noise also need to be monitored regularly. Exceeding standards may indicate damaged bearings, rotor imbalance, or other mechanical failure. The cause needs to be identified and repaired promptly.

After stopping the pump, debris inside and outside the pump body should be cleaned promptly to prevent sediment from affecting the performance of the pump. Clean the pump cavity when necessary to keep the inside of the pump cavity clean and ensure the suction capacity and efficiency of the pump. In order to ensure the long-term efficient and stable operation of centrifugal pumps, there should be a complete inspection and preventive maintenance system. Regularly disassemble and inspect the centrifugal pump, replace wearing parts, detect the wear of important components such as the pump body, impeller, and shaft seal, and make necessary repairs or replacements. At the same time, we develop a preventive maintenance plan and conduct regular vibration analysis, electrical performance testing, etc. to prevent possible failures and improve the reliability of equipment operation.

In short, correct operation and careful maintenance of centrifugal pumps are the key to centrifugal pumps. The cornerstone to ensure its efficient and stable operation. By strictly implementing operating procedures, implementing daily maintenance measures, and performing regular preventive maintenance, the centrifugal pump can always maintain good working condition under various working conditions, thereby creating continuous value for the enterprise.