Cartridge type mechanical sealing device for sealing liquid

Abstract

The present application discloses a cartridge type mechanical sealing device for sealing liquid, the sealing device including a gland, a rotating ring adaptor assembly, a rotating ring, a stationary ring adaptor, a stationary ring, and a locking ring mounted around a rotating shaft. The gland is configured to be fastened to a rear end surface of the equipment enclosure; the rotating ring adaptor assembly including a front end portion configured to be in the liquid and supporting the rotating ring and a rear end portion extending through the gland to be surrounded by the locking assembly which is configured to fasten the rotating ring adaptor assembly to the rotating shaft; the stationary ring adaptor is fastened to a rear end surface of the gland; and when the stationary ring adaptor is released from the gland, a rotating ring adaptor of the rotating ring adaptor assembly or the stationary ring adaptor can be pulled along the rotating ring in a direction away from the liquid so as to be separated from the gland, thereby separating the rotating ring and the stationary ring to release the sealing interface and exposing the rotating ring and the stationary ring to the outside air respectively and providing for in-line maintenance and a reduction of possible leakage points.