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Self-adaptive abutting-type stern shaft sealing device

A sealing device and self-adaptive technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of stern shaft sealing effect, unreliable sealing performance, unreliable sealing performance, etc., to achieve flexible structural design and improved The effect of the sealing structure

Inactive Publication Date: 2021-06-15
DONGTAI HAIPENG MARINE PARTS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the shipbuilding industry, in order to prevent seawater and lake water from infiltrating into the hull along the stern tube, the stern shaft must be strictly sealed to ensure the safety of the ship. The existing seal used for the stern shaft The device is generally sealed by sealing rings at multiple joints, but the existing sealing rings are squeezed and positioned through the gland, so that a tight sealing structure is formed between the sealing ring and the stern shaft. The sealing performance of this structure is It is unreliable. In addition, once the gland is slightly loosened, the sealing of the stern shaft will be affected, which makes the sealing unreliable

Method used

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  • Self-adaptive abutting-type stern shaft sealing device
  • Self-adaptive abutting-type stern shaft sealing device

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Embodiment Construction

[0014] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0015] Such as figure 1 and 2 As shown, an adaptive abutment type stern shaft sealing device includes a stern shaft body 5, a front cover 1, a rear gland 2, and a sealing assembly 3; the front end cover 1 and the rear gland 2 are both in a ring structure; the One end of the rear gland 2 is sleeved and installed on the outside of one end of the front end cover 1; the stern shaft body 5 is rotatably connected inside the front end cover 1 and the rear gland 2; the sealing assembly 3 is installed on the rear gland 2 Around the inside; the sealing assembly 3 includes a sealing ring body 32, a positioning plate 31, a positioning sleeve 33, an extrusion sleeve 35, a pressing elastic body 34, a sliding plate 36, and an extrusion ring body 37; the rear gland 2 A driving groove 21 is respectively arranged up and down in the middle of the interior; a po...

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Abstract

The invention discloses a self-adaptive abutting-type stern shaft sealing device. The self-adaptive abutting stern shaft sealing device comprises a stern shaft body, a front end cover, a rear gland and a sealing assembly. According to the self-adaptive abutting-type stern shaft sealing device, the sealing assembly is additionally arranged on a traditional structure, the upper part and the lower part of the middle of the interior of the rear gland are provided with driving grooves separately, a positioning plate is fixedly arranged in the middle of each driving groove, the position between a positioning sleeve of each positioning plate and an extrusion sleeve of a sliding plate is sleeved with a pressing elastic body, in this way, when each pressing elastic body axially pushes the corresponding sliding plate, each sliding plate drives an extrusion ring body to extrude the periphery of the inner end of one sealing ring body, and each sealing ring body is extruded by the corresponding extrusion ring body and then is tightly pressed on the outer side of the periphery of the stern shaft body in the radial directions, so that therefore, the sealing ring bodies are subjected to secondary extrusion, and the sealing structure of the sealing ring bodies and the stern shaft body is greatly improved.

Description

technical field [0001] The invention relates to an adaptive abutting type stern shaft sealing device. Background technique [0002] At present, in the shipbuilding industry, in order to prevent seawater and lake water from infiltrating into the hull along the stern tube, the stern shaft must be strictly sealed to ensure the safety of the ship. The existing seal used for the stern shaft The device is generally sealed by sealing rings at multiple joints, but the existing sealing rings are squeezed and positioned through the gland, so that a tight sealing structure is formed between the sealing ring and the stern shaft. The sealing performance of this structure is It is unreliable. In addition, once the gland is slightly loosened, the sealing of the stern shaft will be affected, which makes the sealing unreliable. Contents of the invention [0003] Aiming at the shortcomings of the above-mentioned prior art, the problem to be solved by the present invention is to provide an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/16F16J15/3248F16J15/3268
CPCF16J15/16F16J15/3248F16J15/3268
Inventor 汪国君曹兴林王亚东
Owner DONGTAI HAIPENG MARINE PARTS CO LTD
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