Direct current coupled immersion mixer for use in e.g. waste-water treatment plant in industry, has screw thread devices provided on driven shaft adjacent to double slanted bearing, where thread devices perform pre-stressing operation

摘要

The mixer has a tapered roller bearing (5) arranged on a driven shaft (10) within a drive housing (13), and a double slanted bearing (6) attached to the driven shaft. Screw thread devices are provided on the driven shaft adjacent to the double slanted bearing, where the thread devices perform pre-stressing operation. A shaft sealing (2) includes a primary seal (1) provided with an oil seal (4). The driven shaft is connected with an electric motor by a speed reduction connection. An impeller is made of polyurethane or polymer.