Screw air compressor

Abstract

The utility model discloses a screw air compressor, including the shaft with the tooth part and the casing with the cavity, the shaft is along its axial and is placed in the cavity, and the axial both ends are through bearing assembly and casing rotatable connection respectively, still include the shaft sealing assembly, and the both ends of shaft pass through two groups of shaft sealing assembly and the bearing of bearing assembly's connection to make the bearing seal in the bearing seat of bearing assembly. The utility model discloses a bearing assembly and the shaft between setting up the shaft sealing assembly, to realize the isolation between bearing and casing, prevent gas, liquid and enter the bearing to influence the service life of bearing, through the elastic abutment sealing of dynamic sealing unit and static sealing unit and the centrifugal drainage effect of centrifugal piece, realize multistage sealing, to ensure the working environment of bearing, prolong the bearing life, improve the reliability and stability of compressor.

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