Sewage Discharge Pump Topic N99-121

摘要

Report developed under SBIR contract for topic N99-121. Barber- Nichols Inc. has completed a preliminary design of an innovative sewage pump. initial analysis, material selection, and pump layout drawings have been finished along with the Phase-I final report. The pump design features a hermetic electric motor / pump housing that eliminates the troublesome pump seal and utilizes a unique mechanism chopping solids at the pump inlet. The pump motor and bearing system is cooled, lubricated, and purged with a small flow of fresh water thus eliminating the typical oil system. The report outlines the research and testing conducted to select the most effective chopping technology incorporated into the pump design. The design shows the two major failures in the current Naval sewage CHT systems - pump seal leakage and comminutor plugging. The pump is applicable for many marine wastewater-pumping applications (both civilian and military). Other industries that could utilize this technology include residential wastewater lift stations, food processing waste handling operations, the pulp and paper industry or any pumping application that might require the transfer of waste solids.