Water pump mechanical seal leakage fault is one of the most prone to failure of the pump fault. Mechanical sealing material must be suitable for the user to transport the liquid medium, one time in order to explain the nature of the delivery of the medium. Below to the general user about mechanical seal leakage of the six major reasons and maintenance methods:
1. Mechanical seal leakage of the first possibility is the mechanical seal of the dynamic, static ring plane wear. Repair method: replace mechanical seal
2. The water quality is poor. Due to poor water quality, containing high hydrochloride content in small particles and medium, the formation of abrasive wear machine sealing plane or pulling the surface groove, ring groove, such phenomenon. Treatment: to improve the water pressure or media, the replacement of mechanical seals.
3. Install too loose. Observation of machine closure dynamic and static ring plane, the surface have a very thin layer of scale, to wipe the surface, the basic non wear, which is the loss of flexibility and spring assembly caused by bad, or motor axial dynamic.
4. Dry operation caused by dry grinding damage. This phenomenon is more common in type valve at the end of the installation form of inlet pressure, inlet air, pump cavity with air, starting the pump, mechanical seal friction high-speed operation and produces high temperature, unable to get cooling, check sealing machine, spring tension is normal, friction surface charred black, rubber hard cracking. Treatment: exhaust pipe and pump cavity air, the replacement of mechanical seals.
5. Install tight. Observation of mechanical sealing static ring plane, such as a severe burning phenomenon, flat black and deep traces, the sealing rubber hardens, loss of elasticity, this phenomenon is due to caused by the installation too tight. Treatment: adjust the installation height, impeller installation, with a screwdriver to pull out the spring, the spring has a strong tension, after the release of the reset, there is 2 - 4mm of the moving distance can be.
6. Cavitation. Cavitation is mainly produced in hot water pump. The medium is water, the water temperature is too high to produce steam, steam pipe into the pump cavity height, this part of the steam can not be ruled out, resulting in running water, sealing machine dry abrasion failure, cavitation loading automatic exhaust valve, replacement of machine closure.
