Multistage centrifugal pumps are mainly used in the oil, machinery, miners, light industry, pharmaceutical, chemical and other industries pump equipment, in the industry, multistage centrifugal pump has a variety of functions, such as vacuum feeding, vacuum Evaporated, concentrated in vacuo, resuspended in vacuo and degassed in vacuo. Because multistage centrifugal pumps have a wide range of uses and applications, it takes more effort to service multistage centrifugal pumps. Multi-stage centrifugal pump maintenance 1, the demolition of the thrust bearing should be measured before using dial indicator balance disc clearance, and make a record; multi-stage pump disassembly parts must be marked according to the original order to avoid chaos when loading , Installed wrong; not easy to mark the small pieces (such as keys) can be the same level with the impeller or vane (middle) and so on together. 2, visual inspection of the surface of each part is normal, the mating surface must be no bump scratch, no corrosion, etc .; the amount of measured with the key parts of the tolerance tolerance; impeller seal ring, shell seal ring, guide vane seal ring, interstage axis Set of gaps at the time whether the tolerance range, excessive wear and tear need to be replaced. 3, the first rotor installed, re-balancing test; according to the reverse order to remove the pump back to the various parts, pay attention to re-install the amount of each seal ring gap value to ensure correct; Quantity; 4, with the total assembly on the assembly map of the total amount required and semi-serial quantity control should be basically in line with the drawings requirements. Under normal circumstances, the amount of semi-series is about half the total amount of the string. 5, thrust bearing installed thrust balance should pay attention to adjusting the gap between the bearings should be used before the adjustment ring balance plate clearance adjusted to the drawing requirements. Multistage centrifugal pump maintenance for multi-stage centrifugal pump is very important for the work and maintenance, people often say that precautions, multistage centrifugal pump is not a low-cost products, for users, the use of multistage centrifugal pump is hoping it can protect the interests of work, If the multi-stage centrifugal pump to use in the process of doing enough protection and maintenance, multi-stage centrifugal pumps will certainly be building blocks.
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