Reactive force extrusion type stern shaft sealing device

A reaction force and sealing device technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of inconvenient installation and complex structure of the sealing device, and achieve flexible use, ingenious design, and better sealing effect. Effect

Active Publication Date: 2018-12-28
DONGTAI YOUMING MARINE FITTINGS
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

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. The use of the sealing rings requires multiple extrusion mechanisms to cooperate and connect, which leads to the complexity of the structure of the entire sealing device and inconvenient installation. The invention provides a sealing The structure is convenient to install, flexible to use, and firmly connected to the reaction force extrusion type stern shaft seal device

Method used

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  • Reactive force extrusion type stern shaft sealing device
  • Reactive force extrusion type stern shaft sealing device

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Embodiment Construction

[0019] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] Such as Figure 1 to 2 As shown, a reaction force extrusion type stern shaft sealing device includes a bottom plate 1, a gland 2, a stern shaft 6, a sealing mechanism, and an extrusion ring 7. The gland 2 is installed on the bottom plate 1; a sealed cavity is enclosed between the gland 2 and the bottom plate 1. The stern shaft 6 is inserted into the sealed cavity; the sealing mechanism is installed in the sealed cavity. The sealing mechanism includes a first sealing ring 31, a second sealing ring 32, a sealing telescopic tube 33, a telescopic elastic body 34, and a locking assembly. The first sealing ring 31 and the second sealing ring 32 are arranged in parallel and coaxially; the section of the sealing telescopic tube 33 is a ring structure; the two ends of the sealing telescopic tube 33 are respectively solidified on the first sealing ...

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Abstract

The invention discloses a reactive force extrusion type stern shaft sealing device which comprises a bottom plate, a pressing cover, a stern shaft, a sealing mechanism and extrusion rings. According to the reactive force extrusion type stern shaft sealing device, the extrusion rings are additionally arranged cleverly, the extrusion rings on the bottom plate and the pressing cover are inserted intoextrusion ring grooves in the outer sides of a first sealing ring and a second sealing ring, when the first sealing ring and the second sealing ring are extruded towards the outer side, the extrusionrings apply reactive force towards the inner side of the axis of the stern shaft to the first sealing ring and the second sealing ring, thus the attaching force of the first sealing ring and the second sealing ring to the stern shaft is increased, and the sealing effect is better.

Description

Technical field [0001] The invention relates to a reaction force extrusion type stern shaft sealing device. Background technique [0002] The stern shaft is also called the tail shaft. The stern shaft is the last section of the shaft. The head flange and the intermediate shaft flange are connected by tight bolts; the tail end is in the shape of a cone to install the propeller. The stern shaft is forged with high-quality carbon steel. At present, in the shipbuilding industry, in order to prevent sea water and lake water from penetrating into the hull along the stern tube, the stern shaft must be strictly sealed to ensure the safety of the ship. The existing seal is used for the stern shaft. The device is generally sealed by multiple sealing rings at the joints. The use of the matching sealing rings requires multiple extrusion mechanisms for matching connection, which in turn leads to the complexity of the entire sealing device structure and inconvenient installation. The present...

Claims

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Application Information

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IPC IPC(8): F16J15/3284
CPCF16J15/3284
Inventor 周海伦周树明俞平景高伟
Owner DONGTAI YOUMING MARINE FITTINGS
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