Radial and axial double-seal pressing type stern shaft sealing piece

Abstract

The invention discloses a radial and axial double-seal pressing type stern shaft sealing piece which comprises a stern shaft, a front end cover, a rear end cover, a sealing assembly, an adjusting mechanism and a radial abutting mechanism. According to the radial and axial double-seal pressing type stern shaft sealing piece provided by the invention, a radial sealing ring is inserted into an outerside radial annular groove in the inner side of the periphery of an abutting sealing ring, and multiple radial elastic bodies are fixedly installed in an inner side radial annular groove in the outerside of the periphery of the radial sealing ring in the radial direction, so that the two ends of each radial elastic body elastically abut against the position between the outer side radial annular groove and the inner side radial annular groove; the outer side of the periphery of the abutting sealing ring abuts against the inner wall of the periphery of the rear end cover through extrusion of the multiple radial elastic bodies, so that axial and radial sealing abutting of the abutting sealing ring and the rear end cover is achieved; and meanwhile, the inner side of the periphery of the radial sealing ring abuts against the outer side of the periphery of the stern shaft, so that the sealing performance is further improved.

Description

Technical field [0001] The present invention relates to a radial and axial bipolar seal. Background technique [0002] At present, the marine shaft sealing device generally includes a shaft, a sealing end cap, two sealing rings, and a seal is fastened to the shaft, and the other seal is contacted on the inner side of the sealing end cap by elastic pressure. In this case, the jam is sealed and sealed, but during long-term use of the axis, the axial axis occurs in the axial direction, and the axial is moved to the other seal from the inside of the end cap. The pressure will decrease, thereby changing the pressure of the seal and the sealing end cap, resulting in a good sealing effect of the sealing end to the sealing end, so that it is necessary to develop a shaft when the axial movement occurs. Affect the degree of pressure on the sealing ring and the rear end cover. Inventive content [0003] In response to the shortcomings of the above prior art, the problem solved by the prese...

AI Technical Summary

Problems solved by technology

[0002] At present, the marine stern shaft sealing device generally includes a stern shaft, a sealing end cover, and two sealing rings, one sealing ring is fastened on the stern shaft, and the other sealing ring abuts against the inner surface of the sealing end cover through an elastic pressure-resisting mechanism. In this way, the stern shaft and the sealing end cover are sealed by the sealing ring, but during the long-term use of the stern shaft, the stern shaft will be displaced in the axial direction, and the other sealing ring pressed against the inner side of the end cover is subjected to elastic resistance when the stern shaft moves The pressure will decrease, so that the degree of pressure resistance between the sealing ring and the sealing end cover will change, so that the sealing ring will not have a good sealing effect on the sealing end cover. Therefore, it is necessary to develop a type that will not move when the stern shaft moves axially. Affect the degree of pressure between the sealing ring and the rear end cover

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