What are the wearing parts that the pump often needs to replace

Before buying the water pump, we must first understand what the wearing parts of the pump are, and it is more appropriate to buy the wearing parts at the same time, so as to prevent the centrifugal pump from working normally after the wearing parts are broken, affecting the production process and causing unnecessary losses.

Water pump wearing parts mainly have the following parts:

1, the pump shell is generally cast iron, it is subject to mechanical force or thermal stress prone to cracks. When the centrifugal pump in the work due to the impact of cavitation or in the winter did not release the water in the pump shell and frozen, it is also easy to break, such as heavy damage can not be repaired when the new pump shell should be replaced.

2, the pump pump shaft is generally carbon steel parts, but due to manufacturing quality, use or installation reasons are also easy to damage. Centrifugal pump shaft may appear cracks, bending, journal wear, thread damage, etc., may also occur fracture accidents. If the damage is serious and cannot be repaired, a new shaft should be replaced.

3, impeller is an important working part of the pump, made of cast iron. It is also easy to damage due to manufacturing quality and use. The impeller may have cracks, holes or perforations formed on the surface due to cavitation, and the blade will be thinned or worn off for a long time, or even broken by debris. Some defects can be fixed; Some defects cannot be repaired, that is, a new impeller should be replaced.

4, the bearing is copper tin alloy cast, wear resistance is very poor, is easy to wear and burn one of the wearing parts, bearing can generally be repaired, can also be replaced with new parts. Rolling bearings generally have an average service life of 5000 hours, but improper installation, long service time or poor maintenance, and easy to wear or destroy. In addition to the individual parts of the rolling bearings can be replaced with new ones, the overall parts are generally replaced.

5, the mouth ring is also called leakage reduction or wear reduction ring, it is one of the parts that are easy to wear in the pump. It can be repaired or replaced after wear. When replacing the new leak reducing ring, its inner diameter should be configured according to the outer diameter of the impeller entrance. If the outer diameter of the impeller inlet is worn, it can be turned to eliminate grooves and ovals, and then configured with a leak-reducing ring with a reduced inner diameter. The outer diameter of the impeller inlet can generally be turned three times.

6, the filler will harden and lose elasticity after a long time, will make the pump leak, water leakage, generally should be replaced with new filler.