Condensate pump shaft seal rehabilitation programs

Cancellation packing seal, no leakage lossless transformation of a single cartridge mechanical seal face .
Transformation of the condensate pump range:
a) The structure of the pump itself, without any changes , retaining the original sleeve , but to ensure sleeve diameter size φ120-0.04-0.08mm, outer surface roughness Ra of less than 6.3μm;
b) The outer face of the gland packing chamber by the two bolt holes increased to 4 , in order to ensure the mechanical padlock seal gland installation force uniform ;
c) cancel the filler , watershed ring, packing gland ;
d) retain the original outer loop piping system, which is only used at startup , normal operation can be shut down packing chamber cooling water ;
e) from the mechanical seal and flush mouth then a nominal diameter of 8 mm tube into the original relief holes , and install the valve control.  3 swing and ran on the mechanical shaft seal of LDTN type condensate pump for the vertical suspension mode , the pump and motor by the motor rotor weight borne Thrust above . Normal conditions , the upper and lower motor bearings and bearing fluorine resin condensate pump rotor pump only play the role of radial positioning , there is damage to the mechanical seal swing mainly radial and axial movement of the swing . If the radial and axial movement of the swing beyond the mechanical seal to allow beating range, it will damage the mechanical Fixed Length plastic seal. The following may occur for condensate pump two most harsh conditions the greatest impact on the mechanical seal , one is in the motor pump and motor shaft bearings as a fulcrum for the conical lower swing ; another is based on the lower bearing motor and pump heads fluorine resin bearings as a fulcrum for the arc-shaped swing.