The solution to the leakage of the pump

(1) pump rotor axial momentum large, secondary seal and shaft interference quantity is big, ring cannot be flexible on the shaft to move. In turn pump, dynamic and static ring wear, without compensation displacement.

Countermeasures: when in the assembly of mechanical seal, pump company in shenyang the shaft axial momentum should be less than 0.1 mm, auxiliary seal and shaft interference quantity should be moderate, while guarantee the radial sealing, can guarantee on the shaft collar is assembled flexible mobile (press ring to spring can free to bounce back.

(2) the sealing surface lubricating oil quantity insufficient cause dry friction or hair the seals.

Countermeasures: oil chamber cavity lubricating oil surface height should be added to the above dynamic and static ring sealing surface.

(3) the rotor periodic vibration. The reason is that the stator and the upper and lower cover not on or in the impeller and shaft imbalance, cavitation or bearing damage (wear), that will shorten the seal life and leakage.