CN207229944U - A kind of PP R plastic aluminum steady-state tubes - Google Patents
A kind of PP R plastic aluminum steady-state tubes Download PDFInfo
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- CN207229944U CN207229944U CN201721107209.3U CN201721107209U CN207229944U CN 207229944 U CN207229944 U CN 207229944U CN 201721107209 U CN201721107209 U CN 201721107209U CN 207229944 U CN207229944 U CN 207229944U
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- layer
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- spiral groove
- aluminium strip
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Abstract
The utility model specifically discloses a kind of PP R plastic aluminum steady-state tubes, including PP R internal layers, inner glue layer, aluminium strip layer, outer glue-line and PP R outer layers, the PP R inner layer outer surfaces are equipped with axially extending spiral groove, the spiral groove is disposed with the inner glue layer, the aluminium strip layer and the outer glue-line from inside to outside, and radial spacing is left between the outer end face of the outer glue-line and the outer surface of PP R internal layers, the PP R external sheaths are in PP R inner layer outer surfaces and with being equipped with the spiral raised line to connect with outer glue-line and spiral groove side wall at spiral groove opposite position.Influence of the aluminium strip layer to hot-melt adhesive paste intensity when may be such that and be tightly combined between PP R internal layers, inner glue layer, aluminium strip layer, outer glue-line and each layer of PP R outer layers firmly using above-mentioned technical proposal, hold together, be not easy delamination, while can also reduce adapter installation.
Description
Technical field
Tubing technical field is the utility model is related to, more particularly to a kind of PP-R plastic aluminum steady-state tubes.
Background technology
PP-R steady-state plastic aluminum composite pipes are with thermal coefficient of expansion is low, high temperature deformation resistance and pressure-resistant performance are more preferable, hot-melt adhesive paste
The advantages that safe and reliable, be to build hot water and the preferable tubing of central air-conditioning pipe system.But due to inner plastic layer and aluminium strip layer
And connected between outer plastic layer and aluminium strip layer for bonding mode, so during actual production and use, easily occur
The phenomenon of layering.In addition, to ensure bonding strength, which needs to use specific purpose tool by tubing outer layer
Hot-melt adhesive paste is carried out with PP-R pipe fittings again after being peelled off with aluminium lamination, operation is inconvenient, is also not easy to popularization and uses.
Utility model content
To overcome technological deficiency existing in the prior art, the utility model provides a kind of PP-R plastic aluminum steady-state tubes, and each layer connects
For an entirety, common pressure-bearing, is not easy to be layered.
The utility model use technical solution be：
A kind of PP-R plastic aluminum steady-state tubes, including PP-R internal layers, inner glue layer, aluminium strip layer, outer glue-line and PP-R outer layers, it is described
PP-R inner layer outer surfaces are equipped with axially extending spiral groove, and the spiral groove is disposed with the interior glue from inside to outside
Layer, the aluminium strip layer and the outer glue-line, and left between the outer surface of the outer end face of the outer glue-line and PP-R internal layers radially
Spacing, the PP-R external sheaths PP-R inner layer outer surfaces and with spiral groove opposite position at be equipped with outer glue-line and
The spiral raised line that spiral groove side wall connects.
Preferably, the spiral groove side wall is respectively equipped with reinforced wall with inner glue layer and outer glue-line axial direction corresponding position
Groove.
Preferably, the distance between the aluminium strip layer and PP-R outer layers outer surface are the 1/2 to 3/4 of tubing total wall thickness.
The beneficial effects of the utility model：Due to setting spiral groove in PP-R inner layer outer surfaces and being set in spiral groove
Inner glue layer, aluminium strip layer and outer glue-line are put, and radial spacing, PP-R external sheaths are left between outer glue-line and PP-R inner layer outer surfaces
It is connected in PP-R inner layer outer surfaces and with outer glue-line, so that PP-R internal layers, inner glue layer, aluminium strip layer, outer glue-line and PP-R
Aluminium strip layer is right when being tightly combined between each layer of outer layer firmly, hold together, be not easy delamination, while can also reduce adapter installation
The influence of hot-melt adhesive paste intensity.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is the partial enlarged view of A shown in Fig. 1.
Description of reference numerals：
10th, PP-R internal layers；11st, spiral groove；20th, aluminium strip layer；30th, PP-R outer layers；31st, spiral raised line；41st, inner glue layer；
42nd, outer glue-line.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figs. 1-2, the present embodiment provides a kind of PP-R plastic aluminum steady-state tubes, including PP-R internal layers 10, inner glue layer 41, aluminium
Belt 20, outer glue-line 42 and PP-R outer layers 30,10 outer surface of PP-R internal layers is equipped with axially extending spiral groove 11, described
Spiral groove 11 is disposed with the inner glue layer 41, the aluminium strip layer 20 and the outer glue-line 42 from inside to outside, and described outer
Radial spacing is left between the outer end face of glue-line 42 and the outer surface of PP-R internal layers 10, the PP-R outer layers 30 are coated in PP-R
10 outer surface of layer and with being equipped with the spiral shell that connects with outer glue-line 42 and 11 side wall of spiral groove at 11 opposite position of spiral groove
Raised line 31 is revolved, since PP-R internal layers 10 and PP-R outer layers 30 are identical material, there is good amalgamation, the two part that is in contact
It can well combine together, improve heat endurance under the hydrostatic strength and hydrostatic pressure condition of steady state pipe.
In the present embodiment, the pitch of the spiral groove 11 is required according to the standard of specific caliber and hot melt spigot-and-socket depth
Setting, for example may be configured as 12.5mm for the pitch for the PP-R plastic aluminum steady-state tubes that caliber is 25mm.And the present embodiment is spiral
The axial width of groove 11 can set it is larger, first, can be arranged on easy to inner glue layer 41, aluminium strip layer 20 and outer glue-line 42 spiral recessed
In groove 11, manufacture difficulty is reduced, two are so that the present embodiment steady state pipe major part position tool can obtain the enhancing of aluminium strip layer 20
Effect, has the splendid physical properties such as small linear expansion coefficient, high intensity, high temperature tolerance.
In the present embodiment, 11 side wall of spiral groove is distinguished with inner glue layer 41 and the axial corresponding position of outer glue-line 42
Equipped with reinforcement wall trench, the axial end portion of the inner glue layer 41 and outer glue-line 42 is embedded respectively to be strengthened in wall trench, can so be increased
Strong inner glue layer 41 and outer glue-line 42 bonding strength with PP-R internal layers 10 and the cladding stabilization to aluminium strip layer 20 respectively.
Further, the distance between the aluminium strip layer 20 and 30 outer surface of PP-R outer layers for tubing total wall thickness 1/2 to
3/4, without PP-R outer layers 30 and aluminium strip layer volume 20 is reamed by specific purpose tool during installation, can directly pass through the method for hot melt
Steady state pipe is connected with pipe fitting, can effectively avoid bearing capacity being made uniformly to divide there is a situation where leak in junction
Cloth improves the load performance of the steady state pipe on PP-R internal layers 10, aluminium strip layer 20 and PP-R outer layers 30.
The basic principle and main feature and advantages of the present invention of the invention has been shown and described above, the industry
Technical staff is it should be appreciated that the present utility model is not limited to the above embodiments, described in the above embodiment and specification
It is the principle for illustrating the utility model, on the premise of the invention spirit and scope are not departed from, the utility model also has
Various changes and modifications, these various changes and improvements fall within the scope of the claimed invention, the requires of the utility model
Protection domain is defined by the appending claims and its equivalent thereof.
Claims (3)
1. a kind of PP-R plastic aluminum steady-state tubes, it is characterised in that outside including PP-R internal layers, inner glue layer, aluminium strip layer, outer glue-line and PP-R
Layer, the PP-R inner layer outer surfaces are equipped with axially extending spiral groove, and the spiral groove is set gradually from inside to outside
Inner glue layer, the aluminium strip layer and the outer glue-line are stated, and is stayed between the outer surface of the outer end face of the outer glue-line and PP-R internal layers
Have a radial spacing, the PP-R external sheaths PP-R inner layer outer surfaces and with spiral groove opposite position at be equipped with it is outer
The spiral raised line that glue-line and spiral groove side wall connect.
2. PP-R plastic aluminum steady-state tubes according to claim 1, it is characterised in that the spiral groove side wall and inner glue layer and
Outer glue-line axial direction corresponding position is respectively equipped with reinforcement wall trench.
3. according to claim 1 to 2 any one of them PP-R plastic aluminum steady-state tubes, it is characterised in that the aluminium strip layer and PP-R
The distance between outer layer outer surface is the 1/2 to 3/4 of tubing total wall thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721107209.3U CN207229944U (en) | 2017-08-31 | 2017-08-31 | A kind of PP R plastic aluminum steady-state tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721107209.3U CN207229944U (en) | 2017-08-31 | 2017-08-31 | A kind of PP R plastic aluminum steady-state tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229944U true CN207229944U (en) | 2018-04-13 |
Family
ID=61859958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721107209.3U Active CN207229944U (en) | 2017-08-31 | 2017-08-31 | A kind of PP R plastic aluminum steady-state tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207229944U (en) |
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2017
- 2017-08-31 CN CN201721107209.3U patent/CN207229944U/en active Active
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