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Plastic flange connecting sealing system

A technology of sealing system and flange, which is applied in the direction of flange connection, pipe/pipe joint/pipe fitting, passing components, etc. It can solve the problems of poor sealing reliability of rubber sealing ring, increase of production cost, high hardness of nylon pipe, etc., and achieve extended use Longer life, improved construction safety, and low price

Inactive Publication Date: 2015-08-19
山东华信塑胶股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, flange A and flange B have inconsistent structures, and their production requires two different sets of production molds, which increases production costs; and the nylon tube has high hardness, and the sealing reliability and practicability of replacing the rubber sealing ring with it are poor.

Method used

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  • Plastic flange connecting sealing system
  • Plastic flange connecting sealing system
  • Plastic flange connecting sealing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1-2 shown.

[0027] A plastic flange connection sealing system, including a flange pipe fitting part and a sealing ring 2; the radial section of the sealing ring 2 is "T" shaped; the flange pipe fitting part includes two flange pipe heads 1; the The connecting surface of the flange pipe head 1 is provided with an annular groove 3 coaxial with the flange pipe head 1; one side of the sealing ring 2 is provided with an annular protrusion 4 coaxial with the sealing ring 2; The annular protrusion 4 is embedded in the annular groove 3; the two flanged pipe heads 1 are tightly and fixedly connected by bolts; the width of the annular protrusion 4 is 1 / 4 of the width of the sealing ring 2 , the height of the annular protrusion 4 is 1 / 3 of the thickness of the sealing ring 2; the radial sections of the annular protrusion 4 and the annular groove 3 are rectangular, and the width of the annular protrusion 4 is smaller than the The width of the annular groove 3 is ...

Embodiment 2

[0029] A plastic flange connection sealing system as described in Embodiment 1, the difference is that: the flange head 1 is sleeved with a metal flange 5, and the two flange head 1 are matched with the The metal flange 5 is fixedly connected. The metal flange 5 is used for connection, and there is no need to install a connecting plate on the pipe fitting itself. The manufacture of the pipe fitting is simple, resources and procedures are saved, and production and connection efficiency are improved.

Embodiment 3

[0031] A plastic flange connection sealing system as described in Embodiment 1, the difference is that: the side of the sealing ring 2 opposite to the annular protrusion 4 is provided with a small annular protrusion 7 coaxial with the sealing ring 2 , the height of the small annular protrusion is 5mm; the number of the small annular protrusions is 5. The small annular protrusion 7 improves the contact surface between the gaskets and the friction force between the contact surfaces, which can improve the sealing and stability of the flange connection.

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Abstract

The invention relates to a plastic flange connecting sealing system. The system comprises a flange pipe fitting portion and a sealing ring. The flange pipe fitting portion comprises two flange pipe heads. An annular groove coaxial with the flange pipe heads is formed in the connecting face of the flange pipe heads. One side face of the sealing ring is provided with an annular protrusion coaxial with the sealing ring. The annular protrusion is embedded into the annular groove. The two flange pipe heads are fixedly connected in a sealed mode through a bolt. The sealing system is high in safety, firm in sealing and long in service life, two different production molds are not needed for production of flanges needed by the sealing system, and practicability is high.

Description

Technical field: [0001] The invention relates to a plastic flange connection sealing system, which belongs to the technical field of flange connection sealing. Background technique: [0002] The sealing ring plays an important role in the flange connection. The existing sealing ring is in the shape of a disc. During the construction of the flange connection, the sealing ring is easy to deviate and misplace, which takes time and effort, affects the construction progress, poor safety, and workers. If you are not careful, your fingers may be squeezed, and if the gasket is not installed properly, the sealing effect will be affected. The sealing effect of the existing sealing ring often cannot meet the requirements for use. [0003] In addition, the sealing ring installed in the flange joint is often easily dislocated or torn due to long-term heavy load work during use, and the service life is short. [0004] Chinese patent CN203273164U discloses a plastic flange connection asse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L23/18F16L23/22F16L23/032F16L23/028
CPCF16L23/18F16L23/0283F16L23/032F16L23/22
Inventor 马立旺杨光李勇汤海敬杨家贤玄彦芳
Owner 山东华信塑胶股份有限公司
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