Step-type magnetofluid sealing device
A ferrofluid sealing, stepped technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem of low pressure resistance, achieve enhanced pressure resistance, improve pressure resistance and sealing reliability, increase The effect of secondary pressure bearing capacity and self-healing capacity
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[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0018] see figure 1 , a stepped magnetic fluid sealing device, including a shaft 1, a housing 2, a sealing ring 7, a pole shoe 6, a magnetic fluid and a permanent magnet 8, the shaft 1 passes through and extends beyond both ends of the housing 2, so The shaft 1 includes a stepped shaft part located in the housing 2. The middle step diameter of the stepped shaft part is the largest, and the diameters of the steps on the left and right sides decrease successively. The stepped shaft part has a plurality of shafts parallel to the shaft. The first side 9 of the axis of 1 and a plurality of second sides 10 perpendicular to the axis, the inner surface of the housing 2 is provided with at least two pole shoes 6, and a pole shoe 6 is provided between adjacent two pole shoes 6 The ring-shaped permanent magnet 8, the pole piece 6 is an annular structure, the sealing ri...
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