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Adjustable stern shaft rubber sealing device

A rubber-sealed and adjustable technology, applied in the direction of engine sealing, transmission with synchronous propulsion components, engine components, etc. The sealing end cap can not achieve a good sealing effect, etc., to achieve the effect of abutting degree

Inactive Publication Date: 2021-03-23
江苏德立密封科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Adjustable stern shaft rubber sealing device
  • Adjustable stern shaft rubber sealing device
  • Adjustable stern shaft rubber sealing device

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Embodiment Construction

[0017] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] Such as Figures 1 to 4 As shown, an adjustable stern shaft rubber sealing device includes a stern shaft 1, a front end cover 2, a rear end cover 3, a sealing assembly 4, and an adjustment mechanism 5; the front end cover 2 and the rear end cover 3 are connected end-to-end; The stern shaft 1 is threaded and installed between the front end cover 2 and the rear end cover 3; the sealing assembly 4 includes a fastening seal ring 45, a pressing seal ring 44, a telescopic hose 46, an extrusion ring 43, a threading Rod 42, guide sliding rod 41, driving ring 47, and pressing elastic body 48; the inside of the rear end cover 3 is provided with a plurality of guide passages 31 along its length direction; the outer end surface of the rear end cover 3 is provided with Ring-shaped drive groove 33; the outer ends of the plurality of guide channels 31...

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Abstract

The invention discloses an adjustable stern shaft rubber sealing device which comprises a stern shaft, a front end cover, a rear end cover, a sealing assembly, and an adjusting mechanism. The adjusting mechanism is additionally arranged; a driving screw rod is rotated to drive an adjusting block to transversely move, so that the adjusting block abuts against the inner end of an abutting elastic body; and when the adjusting block extrudes the abutting elastic body towards the outer end, the abutting elastic body extrudes a driving ring towards the outer side due to the force transmissibility, so that the abutting sealing ring abuts against the rear end cover more tightly, and therefore the abutting degree can be adjusted.

Description

technical field [0001] The invention relates to an adjustable stern shaft rubber sealing device. Background technique [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. ...

Claims

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Application Information

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IPC IPC(8): F16J15/3284F16J15/3268B63H23/36
CPCB63H23/36F16J15/3268F16J15/3284
Inventor 陶伟
Owner 江苏德立密封科技有限公司
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