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Self-sealing socket butt-joint corrugated pipe and manufacture method

A production method and technology of corrugated pipes, which are applied in the directions of pipes/pipe joints/pipe fittings, pipe connection arrangements, mechanical equipment, etc.

Inactive Publication Date: 2012-06-27
HANGZHOU JINMIN PIPES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages: First, because the convex outer wall of the annular groove is higher than the large-diameter pipe wall, after the corrugated pipe is transported and installed, the convex groove wall protruding from the large-diameter pipe wall directly falls to the ground, and it is necessary to bear the entire length of the corrugated pipe. The weight of the bellows or the fluid in the bellows, the load-bearing capacity is concentrated on the wall of the small annular convex groove, and the double-layer bellows is often a large-diameter bellows. It is easy to cause damage and damage to the bellows, and it cannot be modified after damage or damage, directly causing the bellows to be scrapped; second, because the sealing ring is built in the inner wall groove of the large-diameter pipe wall, there is no gap between the sealing ring and the groove. A tension fit is formed, and only a loose fit is formed. Therefore, when it is plugged and fitted with the small-diameter end of the double-layer bellows, it often causes the sealing ring to run out of the groove (run out of the groove) and deviate, unable to form a sealed fit, and in When the channel deviation is found, it is often impossible to make a second remedy, and the original sealing method can only be used for sealing, which not only has poor sealing effect, but also has leakage and leakage, which directly pollutes groundwater resources and the environment; the third is Not suitable for the production of corrugated pipes with metal pipe ribs

Method used

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  • Self-sealing socket butt-joint corrugated pipe and manufacture method
  • Self-sealing socket butt-joint corrugated pipe and manufacture method
  • Self-sealing socket butt-joint corrugated pipe and manufacture method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: with reference to attached Figure 1-5 . A self-sealing socket butt joint bellows, which includes a bellows 1, a bellows socket 4 and a bellows socket 2, the socket 4 in the bellows 1 is docked with one end of the bellows 1 The cladding tape 5 with the same pipe material melts the socket 4 and one end of the bellows mouth to form an integral structure. The socket 2 in the bellows 1 is docked with the other end of the bellows 1 and uses the same The wrapping tape fuses the socket 2 and the other end of the corrugated tube to form an integral structure. There is an annular groove 6 on the outer surface of the socket 2 and an annular convex sealing ring 3 is embedded in the annular groove 6 . The convex peaks in the annular convex peak sealing ring 3 are double-peak annular sealing rings or tri-peak annular sealing rings, and the peak height of the front peak is smaller than that of the rear peak. The butt joint between the bellows 4 in the bellows 1 and th...

Embodiment 2

[0016] Embodiment 2: On the basis of Embodiment 1, a method for manufacturing a self-sealing socket butt joint bellows, including the online manufacturing process of the bellows 1, after the bellows 1 is manufactured online, the bellows socket tooling ( bellows socket forming inner core) and bellows socket tooling (bellows socket forming inner core) to make bellows socket 4 and bellows socket 2 which are exactly the same The bellows socket 4 and the bellows socket 2 are wound with the same covering tape, and the bellows socket 4 and the bellows socket 2 are respectively connected with the two ports of the bellows 1 after being wound and formed, and are coated with the same material as the bellows The belt is melted and wrapped to form an integral structure, and then an annular groove is formed on the outer surface of the bellows socket 2 .

Embodiment 3

[0017] Embodiment 3: On the basis of Embodiment 2, the bellows socket 4 and the bellows socket 2 are injection-molded with the same material as the bellows socket, and then an annular groove is formed on the outer surface of the bellows socket 2, The bellows socket 4 and the bellows socket 2 are connected to the two ports of the bellows 1 respectively, and are wrapped by melting and winding with the same covering tape as the material of the bellows to form an integral structure.

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Abstract

The invention relates to a self-sealing socket butt-joint corrugated pipe and a manufacture method, which can enable corrugated pipes to be free of welding connection, meet high butt-joint requirements for reliable sealing, and enable socket between the corrugated pipes after butt joint to have a self-sealing function. The self-sealing socket butt-joint corrugated pipe comprises a corrugated pipe, a corrugated pipe bell end and a corrugated pipe inserting opening, wherein the bell end in the corrugated pipe is in butt joint with one end of a pipe opening of the corrugated pipe, and a cladding belt made of materials same as the corrugated pipe is utilized to clad the bell end and the one end of the pipe opening of the corrugated pipe into an integral structure in a fusing mode. The inserting opening in the corrugated pipe is in butt joint with the other end of the pipe opening of the corrugated pipe, and a cladding belt made of materials same as the corrugated pipe is utilized to clad the bell end and the other end of the pipe opening of the corrugated pipe into an integral structure in a fusing mode. An annular groove is arranged on the excircle surface of the inserting opening. The self-sealing socket butt-joint corrugated pipe and the manufacture method have the advantage that a leading card that the corrugated pipe bell end, the corrugated pipe inserting opening and the corrugated pipe port require no welding connection, are directly in butt joint and are formed in a fusing cladding mode is given.

Description

technical field [0001] The invention relates to a self-sealing device that can not only realize the requirement of highly reliable sealing butt joint between bellows and bellows without welding, but also enable the plug connection between the butted bellows and bellows to have a self-sealing function. The socket butt joint corrugated pipe and its production method are mainly suitable for polyethylene steel belt reinforced spiral corrugated pipe, polyethylene double flat wall steel-plastic composite winding pipe and polyethylene hollow wall winding pipe, belonging to the field of corrugated pipe manufacturing. Background technique [0002] CN2821350Y, titled "Pipeline Connection Structure", includes a double-layer corrugated pipe with a wavy outer wall and a smooth inner wall. The two ends are respectively provided with a large-diameter end and a small-diameter end with smooth inner and outer walls. The inner diameter of the large-diameter end and the outer diameter of the sma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L47/02F16L47/06
Inventor 金献民
Owner HANGZHOU JINMIN PIPES
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