Return oil filtering device of lubricating oil system of steam turbine generator unit

The invention discloses a return oil filtering device of a lubricating oil system of a steam turbine generator unit. The return oil filtering device is small in size and light in weight, secondary filtering of return oil is achieved by arranging an inner filtering cylinder in an outer filtering cylinder in a sleeved mode, the return oil can be stirred through an accelerating assembly, and filtering can be accelerated by filtering the return oil in the inner cylinder after stirring. Meanwhile, the fixing assembly is arranged according to the return oil at different heights, the acceleration assembly can be automatically controlled to stir, and the stirring speeds are different when the fixing positions at different heights are different. The technical problem that in the prior art, return oil flowing into a main oil tank in a lubricating oil system is poor in filtering performance through a return oil filter is solved, and the technical effects that the filtering performance of the return oil flowing into the