Serial-connected magnetofluid sealing structure
A magnetic fluid sealing, series type technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of increasing the volume of the magnetic fluid sealing structure, wasting costs, etc., to increase the secondary pressure bearing capacity and self-repair. ability, ensuring the sealing pressure resistance performance, the effect of enhancing the sealing pressure resistance ability
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[0032] Such as figure 1 As shown, a serial magnetic fluid sealing structure includes a hollow shell 2, one end of which is closed and the other end is open. A through hole is opened in the center of the closed end face of the housing 2 , and a shaft 1 penetrating from the through hole to the inner chamber of the housing 2 is also included.
[0033] In the space between the outer surface of the shaft 1 and the inner wall of the housing 2, a plurality of first pole shoes 3 are axially spaced apart. The first pole piece 3 is annular. The outer circular surface of the first pole shoe 3 abuts against the inner wall of the housing 2 .
[0034] An axially magnetized permanent magnet ring 7 is interposed between two adjacent first pole pieces 3 . The polarities of the magnetic poles of two adjacent axially magnetized permanent magnet rings 7 are opposite.
[0035] A radially magnetized permanent magnet ring 8 is sheathed on the inner surface of each first pole piece 3 . A second ...
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