How to replace the packing (also known as gland) of a slurry pump?

08-26 15:34

How to replace the packing (also known as gland) of a slurry pump? The seal of a slurry pump can be divided into packing seal and mechanical seal. Packing seals are generally more cost-effective, so they are commonly used. However, after a period of use, the packing may experience significant slurry leakage, indicating that it needs to be replaced. So, how do you replace the packing? Below, Pan Shi Pump Industry will provide you with a detailed explanation on how to replace the packing (gland).

How to replace the packing (also known as gland) of a slurry pump? The seal of a slurry pump can be divided into packing seal and mechanical seal. Packing seals are generally more cost-effective, so they are commonly used. However, after a period of use, the packing may experience significant slurry leakage, indicating that it needs to be replaced. So, how do you replace the packing? Below, Pan Shi Pump Industry will provide you with a detailed explanation on how to replace the packing (gland).

A packing seal refers to a dynamic sealing device that generates compressive force between the packing, rotating parts, and stationary parts through pre-tightening or the self-tightening effect of the medium pressure. It is also called “packing box seal”. There are various structural forms, mainly consisting of packing, packing box, and packing gland.

The common cause of leakage in the packing seal of a slurry pump is the generation of high temperature due to friction, which leads to the volatilization or carbonization of certain components in the packing and results in leaking gaps. Replacing it is not a simple task, and there are many details to pay attention to!

Select the appropriate packing based on the pump model.
Before replacing the packing, the pump must be stopped.
Close the inlet and outlet valves of the pump, open the vent valve and drain valve, release the residual pressure in the pump, and avoid operating under pressure.
Remove the adjusting screws of the packing gland and take off the gland.
Thoroughly clean the old packing from the packing box.
Check the surface wear of the shaft sleeve.
Cut the new packing according to the outer diameter of the shaft sleeve and add it to the packing box one by one as required.
After adding the new packing, put on the packing gland and tighten the adjusting screws evenly.
Rotate the shaft for 3-5 turns to check the tightness of the packing and whether it rotates smoothly.
Open the pump inlet valve and start the pump according to the operating procedures for testing.