Common Reasons for a Leaking Pump Shaft Seal

To refresh your mind, what are the signs of a pump? The pump cover runs on a rotating pump as it passes through the non-rotating parts of the building. Water enters your pump through a nipple in the center of the impeller. As the impeller rotates, the vanes are filled with liquid and expelled from the pump body through the discharge nozzle. Due to the pump pressure, the water tries to escape from the rotating rod.

The pump valve cover allows the rotating shaft to enter the "wet" area of ​​the pump without getting wet. Each pump shaft has a minimum (acceptable) water consumption. Seal failure is defined as the extraction of excess water. The number of circulating media is determined by the pump's pressure, flow, size, tension, and rotation speed, among other factors. Failure of the pump seal results in loss of fluid and unsafe workplaces due to leaks. That's why you should look for a pump brand you can rely on which offers the best hours of continuous performance.

The 5 Most Common Causes of leaking Pump Shaft Seal Symptoms

1. Close the device

The pump shaft is permanently closed to the side of the post. Regardless of the type of seal your pump uses, there is always contact (friction) between the shaft and the seal. Applying all sealants (gland packing, metal, or liquidizing) always begins to wear due to friction. The seal gradually lengthens and has a longer life when the material has less friction with the shaft.

2. Dry and Running

The marks often use liquid to make this action. If no water is available for lubrication, the seal will dry out, causing friction and heat to increase. The seal will burn or melt and break, causing the liquid to leak due to the pressure. Even a few seconds of dry running can cause a thermal crack or blister, causing the pump Shaft Seal. Most dry running failures occur when restarting the pump after it has been run.

3. Fear and trembling

Extreme shock and vibration can cause axial and radial wear. This leads to misalignment with other water sources. Recording, operating conditions, or working beyond the pump's optimum operating point (BEP) can produce excessive vibration and reduce seal life. If your pump withstands heavy conditions (like dredge pumps), make sure your seal can handle axial and radial loads!

4. Wear the bottom of the bearings

As suggested, the bearings also have to deal with wear due to friction. If the bearings are worn, the shaft vibrates. The shaft movement will cause vibration, which we discussed in the previous chapter about the pump.

5. Pressure drops or spikes

The wear rate will increase if your pump has to deal with pressure drops or spikes. Changing operating conditions will result in increased fluidity. Rubber lip liners are more forgiving in these situations and are less susceptible to this condition.