As technology advances, the continual emergence of new materials, rotating mechanical seal mechanical seal has been widely used as a seal device in the power and chemical industry is particularly evident. Relative to the packing seal mechanical seal with no leakage, long life, low power consuming, and many other advantages, but also the structure is relatively complex and require higher maintenance process and other shortcomings, which gives a higher maintenance requirements officer.

    Our factory unit for the 70's # 1 imported units, level of technology by the time limit, rotating machinery, especially the widely used pump gasket seal. In the operation of the pump shaft seal leakage frequently, especially heat pumps, such as a pump booster pump, drain pump, etc. 4 #, severe leakage was forced to stop running, seriously affecting the safety and stable operation of the unit. After continuous exploration and research, water pump classes successfully carried out a water pump of Unit transformation of mechanical seals, and in the transformation process has accumulated rich experience in mechanical seal repair and maintenance.

    To master the repair and maintenance of mechanical seals, mechanical seals must first know the works. Mechanical seal is sealed by the two components (static ring and the ring) perpendicular to the axis, the surface smooth, straight fit with each other and posed for the relative rotation of the seal. It is sealed by the pressure of the media ring in the co-rotating stationary ring contact surface (face) to generate an appropriate pressing force, so that the combination of the two end close, end the maintenance of an extremely thin liquid film and to seal purpose. This layer of liquid film with the liquid dynamic pressure and static pressure, plays the role of lubrication combined counterweight. Pump mechanical seal repair process is mainly in the following areas:

One. Cleaning and inspection of mechanical seal

    The working principle of the mechanical seal mechanical seal requires no internal impurities. In the mechanical seal assembly thoroughly before cleaning ring and static ring, sleeve and other components. Key check:

    1, the static rings (5,6) the existence of surface scratches, cracks and other defects, the existence of these defects can cause serious mechanical seal leakage. Conditions can be sealed with a special tool to check whether the flat surface, sealing surface is not flat, the pressure of water will enter the assembly of the movement after the mechanical seal ring sealing surface, the separation of dynamic and static ring, mechanical seal failure. Production tooling when necessary, before the pressure test in the assembly.