If you want to use the centrifugal pump reasonably, you need to define and implement the requirements of the centrifugal pump, which can not only ensure the normal operation of the centrifugal pump, but also improve the operating efficiency of the centrifugal pump. The central theme of this article is about the precautions when starting the centrifugal pump, taking the centrifugal pump produced by Shenyi Pump as an example.

First, the contents to be checked before starting the centrifugal pump: use lubricating oil according to the specification requirements, and its name, model and main performance are the key points of inspection; Whether the bearing lubrication system, sealing system and cooling system are intact, and whether the oil and water paths of the bearing are unblocked; Check whether the rotor has friction or seizure, and whether the rotation direction of the impeller is consistent with the design rotation direction; The working valve and accessory device of the centrifugal pump shall be at the position with minimum load, and the outlet valve shall also be closed.

Second, the pump shell and suction pipe of the centrifugal pump must be filled with water first to ensure the vacuum state of the suction inlet of the centrifugal pump. Third, when the medium to be transported is high-temperature liquid, the centrifugal pump needs to warm up. The reason is that the high-temperature liquid flows through the pump, causing the temperature of the centrifugal pump to rise too fast, which will cause excessive temperature difference between the components in the pump, resulting in uneven expansion of the centrifugal pump, which is easy to cause the pump body deformation, wear, vibration and bearing seizure accidents of the centrifugal pump.