Centrifugal method for each component overhaul

First, the packing seal repair methods
1, cleaning centrifugal pump stuffing box and check whether the shaft surface scratches, burrs, etc. . Stuffing box should be cleaned shaft surface should be smooth .
2, check shaft runout , unbalance of the rotor should be beating within the allowable range ,indicative seal in order to avoid excessive vibration , the filler negative.
3 , the packing box and shaft sealant coated or coated with a lubricant adapted to the media .
4, rolls packing filler with a time of first take root stick with the journal of the same size , the packing wound on it , and then cut with a knife , blade best was 45 ° slope.
5 , packing to loading by the root , not one filled with a few . Method is to take a filler coated with a lubricant , filler interface, each hand holding one end opened in the axial direction , so that a spiral , and then coat the incision into the journal . Shall not be opened along the radial direction in order to avoid missing the interface .
6 , take a box of the same size with the filler material or be lower than the hardness of the metal shaft bushings, push the stuffing box deep , with gland put some pressure on the sleeve , so that the filler be pre-compressed . Precompression of 5% to 10%, up to 20%. Then the shaft is rotated one week , remove the sleeve .
7 , in the same way , filling the second , third, . Note that when the filler number of 4 to 8 , the filling should be the interface to each other by 90 °; two fillers shifted 180 °; 3 ~ 6根shifted 120 °, to prevent leakage through the interface .
8 , the last one filler loading is complete, the application gland pressed, but pressing force is not too large .metal seal While rotating shaft by hand to make assembly clamping force tends parabolic profile . Then relax a little gland .
9 , for running test , if not sealed , then pressed a number of filler ; if fever is too large , it would relax some of the . So transferred was only little droplets when leakage and heat up ( only fill part of the temperature than the ambient temperature 30 ~ 40 ℃), before they can be put into use.