Mechanical seal manufacturer Teach you to clean and check!

The working principle of mechanical seal requires that there is no impurity inside the mechanical seal.

Before assembling the mechanical seal, the moving ring, stationary ring, shaft sleeve and other parts shall be thoroughly cleaned. Key inspection:

1. Whether there are scratches, cracks and other defects on the surface of the moving and stationary rings, which will cause serious leakage of the mechanical seal. If possible, special tools can be used to check whether the sealing surface is flat or not. If the sealing surface is uneven, pressure water will enter the sealing surface of the dynamic and static rings of the mechanical seal after assembly, separating the dynamic and static rings, and the mechanical seal will fail. If necessary, tooling can be made for hydrostatic test before assembly.

2. Check whether the rotating and stationary ring seats have defects that affect the sealing. For example, whether there are scars and other defects on the mating surface of the movable and stationary ring seats and the sealing rubber rings of the movable and stationary rings.

3. Check whether the mechanical seal compensation spring is damaged and deformed, and whether the obstinacy coefficient changes.

4. Check whether there are burrs, grooves and other defects in the seal shaft sleeve.

5. Clean and check all sealing rubber rings for cracks, air holes and other defects, and measure whether the diameter of rubber rings is within the working tolerance range.

6. For the mechanical seal with pumping mechanism, check whether the spiral line of the screw pump has cracks, broken lines and other defects.