High pressure dry gas mechanical seal

Abstract

The utility model relates to the technical field of packing type mechanical seal, especially relates to a high pressure dry gas mechanical seal. The shaft sleeve is sleeved on the shaft, the primary seal and the secondary seal are successively sleeved on the shaft sleeve, and the two are linked through screws, the rear labyrinth is installed on the outside of the secondary seal and is linked with the secondary seal through screws, the locking device is installed at the rear end of the shaft sleeve through screws and is connected with the shaft through a positioning pin, the packing device is installed on the outside of the secondary seal through screws and is connected with the shaft sleeve through screws, the packing device is removed after the packing is installed, the clamping plate is installed between the secondary seal and the rear labyrinth and is connected with the secondary seal and the rear labyrinth through screws respectively, and the clamping plate and the compressor wall are positioned through an anti-rotation pin. The technical scheme of the utility model solves the problems that the existing mechanical seal for the existing compressor cannot have good sealing performance, reliable work, small leakage, long service life and low power consumption in the prior art.

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