Magnetic liquid sealing device used for sealing liquid medium

Abstract

The invention discloses a magnetic liquid sealing device used for sealing a liquid medium. The magnetic liquid sealing device used for sealing the liquid medium comprises a shell, a shaft, a magnetic liquid sealing assembly, a heat conduction gasket and a resistance wire. The shell is provided with a cavity, the shaft is pivotally arranged in the cavity, at least one end of the shaft extends out of the cavity, the magnetic liquid sealing assembly is located in the cavity and is arranged on the rotating shaft in a sleeving manner, the heat conduction gasket is arranged in the cavity and is arranged on the shaft in a sleeving manner, the inner circumferential face of the heat conduction gasket and the shaft are arranged at intervals in the radial direction of the shaft, the magnetic liquid sealing assembly and the heat conduction gasket are arranged at intervals in the axial direction of the shaft, and the resistance wire is arranged in the heat conduction gasket, so that sealed liquid flowing into space between the heat conduction gasket and the shaft is gasified. According to the magnetic liquid sealing device used for sealing the liquid medium, the structure is simple, the sealed liquid and magnetic liquid can be isolated, and the service life of the magnetic liquid sealing device is prolonged.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering sealing, and in particular relates to a magnetic liquid sealing device for sealing a liquid medium. Background technique [0002] Magnetic liquid sealing technology has the advantages of zero leakage, no wear, long life and simple structure, so it is used by more and more industries. [0003] In the related art, when the magnetic liquid seals the liquid medium, due to the instability at the contact interface between the two liquids, the magnetic liquid is easily miscible with the sealed liquid medium, resulting in failure of the seal. The environment of high pressure and high linear velocity will not only aggravate the instability of the liquid-liquid interface between the magnetic liquid and the sealed liquid medium, but also the sealing liquid and the sealed liquid are prone to emulsification in the high pressure and high linear velocity environment, resulting in a decrease in the...

AI Technical Summary

Problems solved by technology

[0003] In the related art, when the magnetic liquid seals the liquid medium, due to the instability at the contact interface between the two liquids, the magnetic liquid is easily miscible with the sealed liquid medium, resulting in seal failure

The environment of high pressure and high linear velocity will not only aggravate the instability of the liquid-liquid interface between the magnetic liquid and the sealed liquid medium, but also the sealing liquid and the sealed liquid are prone to emulsification in the high pressure and high linear velocity environment, resulting in a decrease in the performance of the magnetic liquid. resulting in seal failure

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