Before buying a water pump, we must first understand which parts of the pump are vulnerable parts. It is better to buy the vulnerable parts together when buying the water pump, because it is to prevent the pump from not working as usual after the vulnerable parts are damaged, which affects the production process. Unnecessary losses.
The wearing parts of the water pump mainly include these parts:
1. If the pump casing of the water pump is cast iron, it should be noted that it is prone to cracks under the action of mechanical force or thermal stress. When the pump is impacted by cavitation during work or the water in the pump casing is not released in winter, it will be frozen and easily broken. If the damage is serious and cannot be repaired in time, the pump casing needs to be replaced.
2. The material of the pump shaft is generally carbon steel, but it is also easily damaged due to manufacturing quality, use or installation, etc. The pump shaft may also have cracks, bends, journal wear or thread damage, etc., which may also cause the pump shaft If the pump shaft is severely damaged and cannot be repaired, it should be replaced with a new pump shaft in time.
3. The impeller in the water pump is the most important part of the work. The impeller is generally made of cast iron. If required, it can be made of stainless steel or other materials. Due to manufacturing quality and use and other reasons, the impeller may also be easily damaged. Cracks may appear on the impeller. Cavitation may cause holes or perforations on the surface. After long-term scouring, the blades will become thinner or eccentrically worn, or even broken by debris. Some defects can be repaired; some defects cannot be repaired, that is, the impeller should be replaced with a new one.
4. The bearing bush of the sliding bearing is made of copper tin alloy and has poor wear resistance. It is one of the most vulnerable parts that are easily worn and burned. The bearing bush can generally be repaired or replaced with a new one. Rolling bearings generally have an average service life of 5000 hours, but improper installation, long use time or poor maintenance can also be easily worn or destroyed. In addition to the individual parts of the rolling bearing can be exchanged for new ones, the whole parts are generally replaced.
5. The mouth ring of the water pump is also called the anti-leakage or anti-friction ring. The mouth ring of the water pump is one of the most easily worn parts in the water pump. After wear, it can be repaired or replaced with a new one. When replacing a new leakage reducing ring, its inner diameter should be configured according to the outer diameter of the impeller inlet. If the outer diameter of the impeller water inlet is worn, turning can be performed to eliminate groove marks and ellipses, and then a leakage reducing ring with a reduced inner diameter is configured. The outer diameter of the impeller water inlet can generally be turned three times.
6. After a long time, the packing will become hard and lose its elasticity, which will cause the water pump to leak air and water. Generally, the packing should be replaced with a new one.
7. The oil seal of the water pump is made of rubber, which is easy to wear and age. Generally, it must be replaced with a new one.
Post time: 2022-01-06
