Pump e.g. displacement pump, for use as power or work machine for delivering gaseous, liquid fluid or particle stream, has housing with inlet and outlet for fluid, and sealing surfaces formed with roller bodies of roller bearings

摘要

The pump has a housing (103) with inlet and outlet for circulating fluid. Radial sealing surfaces are formed with roller bodies (102) such as rollers, of cylindrical roller bearings. Rotors (101) run on a housing inner wall and in a central area. The roller bodies are guided in a cage in the cylindrical roller bearings. The housing, the rotors and the roller bodies are conically implemented in an axial direction. An axial position of the rotors is adjusted to produce a gap and/or pressing force of the roller bodies relative to the rotors and the housing.