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Seal structure of joint for pipe fittings

A technology of sealing structure and pipe fittings, which is applied in the direction of pipe/pipe joint/pipe fitting, passing element, sleeve/socket connection, etc. It can solve the problems of difficult switching between corner seal and plane seal, affecting production and application, and poor sealing performance. Excellent internal pressure bearing capacity, low production cost, and strong versatility

Inactive Publication Date: 2008-11-12
ZHEJIANG STRONGER HYDRAULIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The pipe joint of this structure is convenient to cooperate with the pipe fittings with internal thread, but the pipe joint of this structure is suitable for corner sealing, and its sealing performance is poor when plane sealing is required
In order to make the two connected pipes have a better sealing effect when connecting, the method of replacing the seal is usually used, such as a flat-bottomed gasket, so this sealing structure has poor versatility in actual operation, and it is not easy to seal corners and planes. switching between, affecting the actual production and application

Method used

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  • Seal structure of joint for pipe fittings
  • Seal structure of joint for pipe fittings
  • Seal structure of joint for pipe fittings

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Embodiment Construction

[0019] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0020] Such as figure 1 As shown, the sealing structure of the pipe fitting joint of the present invention includes a sealing ring 3 and a retaining ring 4 arranged between the pipe fitting 1 and the connecting body 2 connected with the pipe fitting 1 .

[0021] The connecting end of the pipe joint 1 has an external thread, and the root of the external thread is provided with a shoulder 5, and an annular groove 7 is provided between the shoulder 5 and the root of the thread, and the sealing ring 3 is sleeved on the annular groove 7, and the retaining ring 4 is sleeved on the sealing ring 3, and the inner side of the retaining ring 4 is closely attached to the sealing ring 3. Because the sealing ring 3 is an O-shaped seali...

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Abstract

The invention provides a sealing structure for pipe joints, which belongs to the mechanical technical field. The sealing structure solves the problems of rather bad universality and troublesome installation that existing sealing structure can not be used universally in angle sealing and plane sealing and sealing fittings need to be replaced. The sealing structure of the pipe joint is arranged between the pipe joint and a connector; external screw thread is grooved at the connecting end of the pipe joint which is connected with the connector through thread; a shoulder is arranged at the root of the external screw thread of the pipe joint and the connecting place of the connector is provided with a sealing end face; a seal ring and a bead flange are sheathed on the pipe joint, which are arranged between the sealing end face and the shoulder, and the seal ring is positioned at the inner side of the bead flange. The sealing structure adopts double-sealing structure of seal ring and bead ring in plane sealing, with good sealing effect; in angle sealing, only the bead flange needs to be taken down and no other sealing parts need to be replaced, thereby having simple structure, convenient installation, strong universality and wide application range.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a pipe fitting, in particular to a sealing structure used for pipe fitting connection. Background technique [0002] Because the sealing structure can play a sealing role in various connection processes, especially when connecting various pipe fittings, it can prevent water leakage, oil leakage, air leakage and other phenomena at the connection part, so it is widely used in daily life or industrial applications. [0003] The current common sealing structure for pipe fittings is that a sealing ring is connected between two pipe fittings or between a pipe fitting and a pipe fitting, and the sealing ring is extruded to form a seal. The Chinese patent application number is 03210617.3 and the authorized publication number is CN2639662Y, which discloses "a quick-fit pipe joint assembly of a lubrication system", including joints, O-rings, bushes, gaskets, and claws; In the joint connec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L21/02
Inventor 罗学荣
Owner ZHEJIANG STRONGER HYDRAULIC
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