Causes and treatment methods of water pump leakage
Feb 02, 2023
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Causes and treatment methods of water pump leakage
1. The installation is too tight
Observe the planes of the dynamic and static rings of the mechanical seal. If there is serious burning, the planes turn black with deep traces, the sealant hardens and loses its elasticity, this is caused by over-tight installation.
Solution: Adjust the installation height. After the impeller is installed, pull out the spring with a screwdriver. The spring has a strong tension. After loosening, it will reset and move a distance of 24 mm.
2. The installation is too loose
Observe the machine seal, the plane of the static ring, there is a very thin scale on the surface, which can be wiped off, and the surface is basically not worn, which is caused by the loss of elasticity and the assembly of the spring, or the axial movement of the motor.
Solution: Adjust the installation height. After the impeller is installed, pull out the spring with a screwdriver. The spring has a strong tension. After loosening, it will reset and move a distance of 24 mm.
3. Poor water quality contains particles. Due to the poor water quality, the medium contains small particles and high hydrochloride content, forming the sealing surface or tension surface of the abrasive mill, causing grooves, grooves and other phenomena.
Treatment: Improve the water pressure or medium and replace the machine seal.
About the maintenance method of the water pump
During the long-term operation of the fire pump, phenomena such as wear of the bearing chamber, bearing position, cracks and rupture of the pump body, pump cavitation and erosion often occur. After the above problems occur, the traditional solution of the enterprise is to repair or repair after brush plating, but there are some shortcomings: the thermal stress generated by the high temperature of repair welding cannot be completely eliminated, and it is easy to cause material damage, resulting in bending or breaking of parts; The thermal stress after plating can cause material damage and part fracture. H electroplating is limited by the thickness of the coating, and it is easy to peel off. The above two methods use metal to repair the metal, and the "hard" state cannot be changed. For the hard fit relationship, under the combined action of various forces, it will still cause re-wear.
1. The installation is too tight
Observe the planes of the dynamic and static rings of the mechanical seal. If there is serious burning, the planes turn black with deep traces, the sealant hardens and loses its elasticity, this is caused by over-tight installation.
Solution: Adjust the installation height. After the impeller is installed, pull out the spring with a screwdriver. The spring has a strong tension. After loosening, it will reset and move a distance of 24 mm.
2. The installation is too loose
Observe the machine seal, the plane of the static ring, there is a very thin scale on the surface, which can be wiped off, and the surface is basically not worn, which is caused by the loss of elasticity and the assembly of the spring, or the axial movement of the motor.
Solution: Adjust the installation height. After the impeller is installed, pull out the spring with a screwdriver. The spring has a strong tension. After loosening, it will reset and move a distance of 24 mm.
3. Poor water quality contains particles. Due to the poor water quality, the medium contains small particles and high hydrochloride content, forming the sealing surface or tension surface of the abrasive mill, causing grooves, grooves and other phenomena.
Treatment: Improve the water pressure or medium and replace the machine seal.
About the maintenance method of the water pump
During the long-term operation of the fire pump, phenomena such as wear of the bearing chamber, bearing position, cracks and rupture of the pump body, pump cavitation and erosion often occur. After the above problems occur, the traditional solution of the enterprise is to repair or repair after brush plating, but there are some shortcomings: the thermal stress generated by the high temperature of repair welding cannot be completely eliminated, and it is easy to cause material damage, resulting in bending or breaking of parts; The thermal stress after plating can cause material damage and part fracture. H electroplating is limited by the thickness of the coating, and it is easy to peel off. The above two methods use metal to repair the metal, and the "hard" state cannot be changed. For the hard fit relationship, under the combined action of various forces, it will still cause re-wear.
