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Packing deterioration is one of the main reasons for excessive leakage of water pump packing and short service life. In addition, the reasons for this failure include loss of elasticity and poor packing quality.
Among the many fillers, asbestos filler is the most widely used filler at present. After drying and hardening, it will form hard lumps, which will greatly reduce the contact area with the pump shaft. , Increase wear and tear, the following is a specific introduction to the reasons for the leakage of water pump packing.
The replacement period of the packing is too long, the packing is aging; the quality of the packing is poor, the structure is loose, and it is easy to wear and fail, etc. are all the reasons for the water leakage of the packing of the pump. At this time, the packing needs to be replaced.
In addition, during the operation of the water pump, if the packing gland is too tight, the packing will wrap the pump shaft so that the water in the water seal ring cannot pass through smoothly, which will cause the packing to fail due to overheating and hardening due to insufficient cooling and lubrication. At this time, the packing gland should be tightened until the water flows out drop by drop.

The inner ring of the water seal ring of the water pump is too small, the number of small holes on the ring is insufficient or blocked, the installation position of the water seal ring is incorrect, and the water seal pipe is blocked; The small clearance between the packing gland and the pump shaft is also a cause of water leakage in the pump packing.