1.To carefully check the mechanical seal number of parts is not meet the needs of, all kinds of mechanical seal equipment operation, each element is damaged, especially dynamic and static ring has no bumps, cracks, deformation and other defects. 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.To prevent the end cap deflection, coupling correction, tighten the gland pump mechanical seal bolts should be uniform, with the ruler, the fault is not greater than 0.05mm.
5.With the collaboration space feeler check the gland and the shaft or shaft diameter (i.e. concentricity), adjacent to the uniform, allow patients negligence is not greater than 0.l0mm.
6.Spring compression should comply with the rules, is not allowed to be too large or too small to allow fault representation, + 2, 00mm. excessive compression, face pressure, accelerate the wear of surface; pressure is too small, lack, 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.Static ring, the sealing ring in static ring back again into the sealing end cover mechanical seals, static ring end face and the end cover of the center line of the verticality shall meet the technical requirements, anti rotary slot should be anti rotation pin static ring back, 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.
