Reciprocating shaft's sealing device with both magnetic fluid seal and c-type slip ring seal

Abstract

A combined sealing device composed of a magnetic fluid seal and a C-type slip ring seal for a reciprocating shaft, characterized in that an internal circlip (2) with an O-shaped rubber seal ring, N pieces of seal assemblies, a C-type slip ring (7) provided on the external circlip, and an external circlip (8) with an O-shaped rubber seal are placed at the end of the sealed chamber (1) with an O-shaped rubber seal in order, and by connecting the external thread of the swivel nut (9) with the thread of the sealed chamber (1) with the O-shaped rubber seal, the swivel nut (9) is adapted to press above listed parts tightly, 1≦N≦20; every seal assembly is composed of a C-type slip ring (3), a pole piece (4) with an O-shaped rubber seal, a permanent magnet (5), and a pole piece (6), then the above-mentioned components are bonded together; before the combined sealing device composed of the magnetic fluid seal and the C-type slip ring for the reciprocating shaft is installed on the shaft, the magnetic fluid is injected into the inner circumferential surface of the permanent magnet of N pieces of seal assemblies. This device can overcome the problem of leakage of the reciprocating compressors.

Dependencies are inferred from the claim text.