1 # 3 # 4 # 1 # pit for desulphurization pump mechanical seal replacement

1 # 3 # 4 # 1 # pit for desulphurization pump mechanical seal replacement - 2019 07 - Zhang yi (29 Zenith steel thermal power plant) 1, handle the maintenance working ticket, electricity, disconnect the pump total power supply, and completes the warning marks, beware of disassembled by artificial mistake on electricity. 2, in order to open the motor cover, coupling cover and pull outward motor disconnect couplings. 3, the symmetric disassemble pump body end cover screw, machine sealing seal water pipe. 4, will be at the bottom of the pump body fixed screw loosening, joint impeller out entirely, if difficult to pull out, on the pump cover screw holes impeller can be out. 5, use socket wrench to loosen the impeller fixed screw, remove the impeller counterclockwise. 6, loose bearing inside the Allen screw, remove the contractor. 7, remove the mechanical seal bearing end cover screw, observe the machine status, first ring to draw out slowly will be removed, such as relatively tight spray can be used lubricating oil on the shaft, remove the ring. After 8, remove the ring, visible machine static sealing ring and static ring embedded in the pump body, mouth, small available word gently move, pay attention to the static ring outer ring have L or type O sealing ring, the move is to prevent the sealing ring to pry the bad. Then encapsulation on the new machine, the specific steps are as follows: 1, to the pump shaft to clean up, when necessary, can be used sand paper burnish, gently with a clean cloth to clean the pump shaft and the static ring groove, attention must not have small particles and debris. 2, in the motor shaft and the static ring groove coated with grease, with a clean cotton cloth to wipe clean, xinji static sealing ring in static ring outer ring and end face is covered with grease and then will still face outwards ring embedded static ring groove, attention must be flat and level. 3, after clean ring, ring and face covered with grease face itself gently rotate slowly will ring and static ring end face tiejin, will ring spring compression, press the spring is elastic. 4, the total bearing end cover is installed in place, tighten the screw. 5, clockwise mount impeller, tighten the screw impeller ( Screw on the package ribbons) 。 6, insert the motor and impeller pump body, pay attention to the end cover of the outer ring o-rings don't crush, modifying the positions of impeller, shaft turning impeller mouth ring prevention department have jam phenomenon, even tight end cover screw, to check whether there is resistance, impeller and make the corresponding adjustment. Mechanical seal sealing pipe installation, open the water valve sealing and see if the leakage, leakage, if any, disc coupling, look to whether to solve the problem. 7, mount the motor cover, coupling guard, mechanical seal sealing water pipe. 8, cleaning tools and supplies, to clean up the scene.