A parallel magnetic fluid reciprocating sealing device

Abstract

The invention relates to a parallel type magnetofluid reciprocating sealing device. The device comprises a shaft, a shell, an outer ring magnetic conductive sleeve, a left pole shoe ring, a right poleshoe ring, permanent magnet rings I, permanent magnet rings II and permanent magnet rings III; the left pole shoe ring and the right pole shoe ring are arranged at the two ends of the inner wall of the outer ring magnetic conductive sleeve separately; more than one permanent magnet ring I is arranged on the inner wall, corresponding to the part between the left pole shoe ring and the right pole shoe ring, of the outer ring magnetic conductive sleeve at intervals in the axial direction; the permanent magnet rings II are arranged on the left end surface of the left pole shoe ring; the permanentmagnet rings III are arranged on the right end surface of the right pole shoe ring; and pole teeth I, pole teeth II and pole teeth III are arranged on the shaft. The device has the advantages that the problem that an existing single-magnetic-source magnetofluid sealing device and an existing multi-magnetic-source magnetofluid sealing device are low in pressure resistance can be solved, meanwhile,the stress concentration can be reduced, machining and assembling are simple, and therefore a sealing technology can be successfully applied to the fields of engineering machinery, aviation reciprocating shaft seal and the like.

Description

technical field [0001] The invention belongs to the field of mechanical engineering seals, in particular to a parallel magnetic fluid reciprocating seal device. Background technique [0002] my country is relatively backward in high-pressure reciprocating seal testing work and the establishment of related standards. The current seal testing standards are basically formulated with reference to early foreign standards, which cannot meet the needs of the rapid development of the aviation industry. The research on reciprocating seals is of great significance for further understanding the current situation of domestic and foreign aviation industries and taking a solid step in the field of aviation sealing. In general, the advantages of this technology are unique, and as people explore it further, these disadvantages can be resolved. Therefore, the magnetic liquid reciprocating shaft sealing technology has high utilization value and broad development prospects. [0003] One of t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a parallel magnetic fluid reciprocating sealing device, which uses multiple permanent magnets to provide a magnetic source. The fluid sealing device and multi-magnetic source magnetic fluid sealing device have the problem of low pressure resistance, while reducing stress concentration and simple processing and assembly, making this sealing technology successfully applied to construction machinery and even aviation reciprocating shaft seals and other fields

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