1. All kinds of sewage pump mechanical seal equipment operation before. If there is any doubt, the need for correction or replacement of new pieces.
2. Check the sleeve or gland chamfer is not appropriate, does not meet the need of necessary repair.
3. Submersible sewage pump mechanical seal equipment before operation, it is necessary to clean the mechanical seal of the various components and related equipment contact surface. Equipment in the process should adhere to clean, especially the dynamic and static ring surface and its auxiliary seal components should be free of impurities, dust. The surface of the dynamic and static ring is coated with a layer of clean mechanical oil or turbine oil.
4. In order to prevent the end cap of skew, after the correction of a coupling, pump mechanical sealing press cover is tightened bolts should be uniform, check with the feeler of each point, the fault is not more than 0.05mm.
5. Feeler to check the gland and the shaft or shaft diameter collaboration space (i.e. concentricity), adjacent to the uniform, suffering from the allowable error not more than 0.l0mm.
6. Spring compression amount should conform to the rules, is not allowed to be too large or too small representation, the allowable error is plus or minus 2, tightening 00mm. volume, face pressure increases, accelerated wear of surface; too small, pressure lack, up not to seal. Spring loaded in the spring seat movement should be active. When the equipment is single spring, it should pay attention to the rotation direction of the spring, and its rotation direction should be opposite to the direction of the shaft.
7. Equipment moving ring, should be able to activate the mobile ring pressure to the spring should be able to automatically bounce back.
8. Equipment static ring. First of all, the sealing ring is sleeved in the static ring back again into the sealing end cover of the mechanical seal and the verticality of the center line of the end surface of the static ring and an end cover should fit in with the needs of the technology, static ring back anti rotary slot to response the anti rotation pin, but not in contact. In the process of equipment, do not damage the static ring end face.
9. In the process of equipment, must not allow the impact of the sealing element with something to prevent damage to the sealing element.
