Maintenance method for excessive leakage of water pump stuffing box

Fault cause: ① the packing in the stuffing box of the water pump is not pressed tightly ② the packing in the stuffing box of the water pump is wrapped wrongly or the packing is worn and the properties are changed ③ the pump shaft is bent ④ the cooling water flowing into the stuffing box is not clean, which causes the pump shaft to wear and open Maintenance method: ① firstly, use wrench to tighten gland screw of stuffing box to compress the packing If the failure cannot be eliminated, open the stuffing box again to check the packing condition; if the packing is too loose or the number of layers is insufficient, it shall be rewound and added with packing ② open the stuffing box of the water pump and check the filling quality and properties of the packing If the packing method is improper, the packing shall be refilled according to the correct method; if the packing is worn or the properties change (such as different thickness of asbestos rope, drying, hardening, etc.), the new packing shall be replaced Packing method: generally, asbestos rope is used to weave the packing into various specifications with different thickness After being soaked with butter, the packing is pressed into strips with square section, and graphite powder is coated on the outer surface Several sections of the packing with appropriate specifications are cut according to the thickness of the shaft and put into the packing box The number of layers of the packing should be appropriate, Generally, it is better to use 4-6 layers and wrench to properly tighten the gland of stuffing box (generally, the amount of water dripping is 60 drops / min) ③ first open the pump body, dismantle the pump shaft of the water pump and carry out calibration Then correct or replace according to the calibration ④ first, loosen the open water plug to drain the cooling water in the stuffing box, and then refill the clean cooling water Then, take out the pump shaft for inspection, and repair or replace it according to the specific situation of inspection.