IMPROVED WATER- INJECTED SCREW COMPRESSOR ELEMENT.

摘要

Improved water- injected screw compressor element which mainly consists of a housing (2) on the one hand, confining a rotor chamber (5) with an inlet (6) on one far end and an outlet (7) on the other far end and in which two co-operating rotors (3,4) are provided which are bearing- mounted in the housing (2) with their shaft (16,20) by means of water-lubricated bearings (17,18,21,22) , characterised in that for every rotor are provided two pistons, a first piston (37,38) and a second piston (17,21) respectively, which can be each axially shifted in a guide, whereby each of these pistons (17,21,37,38) makes contact with the rotor (3,4) concerned with one side or is part of it, and makes contact with a pressure chamber (41,42,43,44) with an opposite side, in order to partly or almost entirely compensate for axial force components exerted by the compressed gasses on the rotors.