Submersible sewage pump mechanical seal

(1) a variety of submersible sewage pump mechanical seal equipment before the operation to carefully check the number of mechanical seal parts is not in line with the needs of the components for damage, especially dynamic and static ring without bumps, cracks, deformation and other defects. If in doubt, correct or replace the parts.

(2) check the sleeve or gland chamfering is not appropriate, does not meet the need to repair.

(3) submersible sewage pump mechanical seal equipment before running, it is necessary to clean and clean the mechanical seal components and their related equipment contact surface. Equipment process should adhere to the clean, especially the dynamic and static ring surface and its auxiliary sealing components should be no impurities, dust. Static, static ring surface coated with a layer of clean mechanical oil or turbine oil.

(4) In order to prevent gland face deflection, coupling correction, the submersible sewage pump pump mechanical seal tight gland bolts should be uniform, with the feeler to check the points, the fault is not greater than 0.05mm.

(5) with a feeler gauge gland and shaft or sleeve diameter of the collaborative space (ie concentricity), adjacent to uniform, the suffering of the permissible fault is not greater than 0.l0mm.

(6) the amount of spring tightening should be consistent with the rules, does not allow too much or too small appearance, to allow fault ± 2,00mm. When the tightening amount is too large, the end face increases in specific pressure, and accelerates the end face wear; when it is too small, the specific pressure is scarce and the sealing effect can not be achieved. Spring loaded into the spring seat after the move should be active. Equipment single spring, should pay attention to the rotation of the spring, the rotation should be in the opposite direction with the axis of change.

(7) equipment ring, it should be able to ensure that mobile, dynamic ring pressure to the spring should be able to automatically bounce back.

(8) When the equipment is stationary, first install the sealing ring on the back of the static ring and then in the mechanical seal. The perpendicularity of the static ring end face and the center line of the end cover should meet the technical requirements. Should be aligned anti-pin, but can not touch. Do not damage the ring end face during the installation.

(9) equipment, the process will not be allowed to hit something with the sealing element to prevent damage to the sealing element.