Thrust Bearing-Relieving Disk of Multistage Centrifugal Pump

The dewatering pumps operating in the deep level mines show the problems of volumetric losses and wear that are caused by the wear of thrust axial disk. The pumped fluid, contaminated with the hard mineral particles, flows through the gap between the rotating disk and stationary relieving disk and it causes the wear of both elements. The paper describes the grounds and the design of the modernized thrust node of multistage centrifugal pump. This node fulfils the function of axial hydrostatic bearing supplied with the working fluid and transmitting high axial load. The suggested node design consists of relieving disk with flat carrying surface and stationary thrust ring supported elastically on the polymer layer. The disk and ring are separated by the thin water film.