Stainless steel submersible pump repair process

Ningbo J&T water pump factory according to their own years of experience in pump industry, provide stainless steel pump maintenance knowledge, hope useful for everyone. Stainless steel submersible pump general overhaul once a year, the total run time less than 2000 h, may be extended appropriately according to specific situation. Its content is as follows. 1, ball bearing and the bearing cover should be clean, such as bearing a little corrosion, crack, or clearance, to timely replacement. When changing bearing level shall not be lower than the original bearing level, be sure to use formal bearing factory products. Replace the plug gauge measuring clearance before application, each large water pump overhaul should clean up the bearing of the cooling jacket when scale and sundry, to ensure the water flow. 2, impeller and blade if there is crack, damage and corrosion, and so on and so forth, light person can use the repair, such as epoxy resin, responding to replace the new impeller. Impeller and shaft connection parts of the loose and permeable, if any, should be revised or change the join keys, the impeller is installed on the water pump shaft after shaking value must not exceed 0. 05mm( This figure is for reference only, because of some requirements of high-speed impeller on shaking value higher 。 Repair or replace the impeller for calibration of dynamic balance and static equilibrium, if beyond the scope should be allowed timely correction, such as heavier on one side of the file off some, but prohibited from use on the impeller of drilling methods to achieve balance, so as not to appear in the hole of the damage caused by stress concentration. 3, water control valves should be timely check and change the packing, in order to prevent leakage. Stainless steel submersible pump overhaul process 4, 0 the diameter of the pump shaft bending more than the original. 05% when, should be corrected. shaft and shaft sleeve not concentricity between should not exceed 0. 5 mm, more than to replace collar. Water pump shaft corrosion or wear more than 2% of the original diameter, should replace the new shaft. 5, axle sleeve with rules of wear on more than 3% of the original diameter, irregular wear the original diameter of more than 2%, must be replaced. At the same time, check the shaft and shaft sleeve of the contact surface with and without water seepage, shaft sleeve between the impeller and paper pad is complete, not requirements shall be modified or replaced. New collar after impaction and bearing concentricity, should not be more than 0. 05mm。 6, check the sealing ring crack and wear and tear, the impeller of the radial clearance should not exceed the prescribed maximum allowable values, more than should be replaced. When replace the sealing ring, the water inlet of impeller outer diameter should be turning, the principle is to see the light can be turning when should pay attention to and axis concentric. Then put the seal ring diameter according to the size of fit clearance value well, sealing ring and the axial clearance between the impeller with between 3 ~ 5 mm advisable.
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