Screw spindle pump for supplying and compressing gases has a rotor inner cooling mechanism working with a coolant for a displacing rotor pair in a pump casing along with a toothed wheel fixed on the rotor

摘要

Designed as a cylindrical retaining peg, a rotor toothed wheel's (12) end on the side of a bearing plugs into a cylindrical section on a spindle rotor cooling hole under an arrangement of spindle rotor bearings (13). On the rotor toothed wheel, a diameter step between the cylindrical retaining peg and the rotor toothed wheel's gearing takes over a bearing's inner raceway axial fixing on the arrangement of spindle rotor bearings via an inner feeder tube (9) for a rotor inner cooling mechanism.