The overheating of the packing box in the fire pump is mainly caused by wear and tear of the packing or seal, incorrect packing, problems with packing design, and wear of mechanical seals.
Overall, the overheating of the stuffing box in fire pumps is mainly caused by wear and tear of the packing or seal, incorrect packing, problems with packing design, and wear of mechanical seals.
1) The packing or seal in the stuffing box is worn, causing air to leak into the pump casing
Elimination measures: Check the packing or seal and replace it as needed. Check if the lubrication is normal.
2) The packing box is not filled correctly (insufficient packing, not properly inserted or run in, too tight packing)
Elimination measures: Check the packing and reload the packing box.
3) There are design issues with the packing or mechanical seal
Elimination measures: Consult with the manufacturer.
4) Mechanical seal damage
Elimination measures: Check and replace as required. Consult with the manufacturer.
5) Scratch on the shaft sleeve
Elimination measures: Repair, re machine or replace as required.
6) The packing is too tight or the mechanical seal is not adjusted correctly
Elimination measures: Check and adjust the packing, and replace it as required. Adjust the mechanical seal (refer to the manufacturer's instructions provided with the water pump or consult with the manufacturer).
