| 主权项 |
1. A liquid ring pump for generating vacuum and for pumping a flow of sewage in a vacuum sewage system, wherein the liquid ring pump comprises, in the direction of the flow of sewage,
a pump inlet, an inlet chamber, a pump housing provided with a rotor arranged on a drive shaft, an outlet chamber, the drive shaft extending from the housing into the outlet chamber, the drive shaft having a mechanical seal, wherein the mechanical seal is arranged on a portion of the drive shaft that passes through the outlet chamber, an integrated extension comprising an extended volume extending from the outlet chamber, the integrated extension having a width that extends over the outlet chamber, wherein the integrated extension provides a continuation and enlargement of the outlet chamber extending toward a pump outlet, and the pump outlet arranged at an end of the integrated extension, in the direction of the flow of sewage, wherein the pump inlet is arranged to be connected to a collector for receiving the flow of sewage, wherein the pump outlet is arranged to be connected to a discharge pipe for discharging the flow of sewage, and wherein the mechanical seal is arranged to be lubricated by the flow of sewage as the flow of sewage flows from the pump housing into and through the outlet chamber and the integrated extension of the outlet chamber from where it is discharged through the pump outlet into the discharge pipe. |
