What should be paid attention to when installing and operating mechanical seals? Machinery Seal

What should be paid attention to when installing and operating mechanical seals?

Installation and decommissioning

1. Before starting, the sealed chamber should be filled with liquid. When transporting solidified medium, steam should be used to heat the sealed cavity to melt the medium. The car must be cranked before starting to prevent the soft ring from breaking due to sudden start.

2. For mechanical seals that use the external oil sealing system of the pump, the oil sealing system should be started first. Stop the oil sealing system last after parking.

3. After the hot oil pump is out of service, the cooling water in the oil seal cavity and the end face seal cannot be stopped immediately. The cooling water should be stopped only when the oil temperature at the end face seal drops below 80 degrees, so as not to damage the sealing parts.

run

1. If there is a slight leakage after the pump is started, it should be observed for a period of time. If the leakage does not decrease after 4 hours of continuous operation, the pump should be stopped for inspection.

2. The operating pressure of the pump should be stable, and the pressure fluctuation should not exceed 1 kg/cm2.

3. When the pump is in operation, avoid pumping out to avoid dry friction and damage to the sealing surface.

3. The sealing condition should be checked frequently. During operation, when the leakage exceeds the standard, the heavy oil is not more than 5 drops/min, and the light oil is not more than 10 drops/min. If there is no improvement within 2-3 days, the pump should be stopped to check the sealing device.