Reconstruction of Vacuum System on Central Fans on Molins Super 9

Abstract

In this experimental work, possible solutions to the problem of damage to the impeller of the centrifugal (radial) fan are provided. Due to the impact of the impeller, a breakdown (damage) of the casing occurred, and then to the bending of the shaft of the fan assembly. In the first part of the paper, as a proposal of the solution, the reconstruction of the axle mounting on the basis of the installation of double bearings of the same type and the structural change of the blades of the rotor was done. In the second part, the process of reconstructing the impeller of the fan with modified production technology was worked out to solve the problem of balancing the mass. The study defines the methodology to be followed through the design documentation and the Instructions on the assembly process, which must be strictly observed. By complying with the prescribed technological procedure, the lifetime of the fan will undoubtedly be prolonged.