The Relationship Between Flow Channel Loss And Impeller Of Centrifugal Water Pump

Sep 18, 2024

The main mechanical loss of centrifugal pumps is the increase in friction and loss of the pump disc, which is basically at 30% of the effective power; If the dedicated area and roughness of the impeller and pump can be reduced, the losses caused by friction can be greatly reduced. Based on the reasons mentioned above, using ultra smooth coatings or more advanced smooth impellers can directly reduce the power loss of pipeline pumps during operation.

But when we use it for a long time, and under the erosion of various sediments and water currents, the impeller slowly wears and corrodes, forming grooves and scratches on the surface. Sometimes it is damaged by air, and various honeycomb like or perforated structures appear. Whether some are not treated properly during casting, with pores or impurities mixed in, pores or cracks appear after long-term use.

There are many methods for repairing damaged impellers in centrifugal pipeline pumps, such as spray welding, stainless steel inlay or welding, and epoxy resin polymer material coating, which has the advantages of simple construction method, low cost, and good effect. By optimizing the ratio and adjusting the performance indicators of the material in a targeted manner, it demonstrates high-strength adhesion and toughness in absorbing impact energy, and has high strength and hardness in resisting cavitation and abrasion damage.