Tank med sentrifugalpumpe for tomming av tanken

摘要

The invention relates to a liquid tank with centrifugal pump with a substantially vertical pump shaft for discharging of the liquid, wherein the pump is arranged with the intake side at the bottom of the tank and via a drive shaft connected to drive means preferably arranged above the tank, where the drive shaft with a coupling is in operable connection with the pump shaft, and wherein the pump near the coupling has a first main shaft at the upper end of the pump shaft and a second main bearing opposite the coupling at the lower end of the pump shaft near the tank bottom, and wherein there is connection between the discharge side of the pump step opposite each bearing and the bearing faces of the relevant bearing, and wherein there is provided an outlet from each bearing to the intake side of the pump step. According to the invention the first main bearing near the coupling at the upper end of the pump shaft is a purely radial bearing, and the second main bearing opposite the coupling at the lower end of the pump shaft is a radial and axial bearing.