CN1152684A - Aluminium-plastics composite pipe joint - Google Patents
Aluminium-plastics composite pipe joint Download PDFInfo
- Publication number
- CN1152684A CN1152684A CN 95114270 CN95114270A CN1152684A CN 1152684 A CN1152684 A CN 1152684A CN 95114270 CN95114270 CN 95114270 CN 95114270 A CN95114270 A CN 95114270A CN 1152684 A CN1152684 A CN 1152684A
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- Prior art keywords
- joint
- aluminium
- pipe
- composite pipe
- core pipe
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The present invention relates to an adapter for connecting aluminium-plastic composite tube. Said adapter is composed of core tube of adapter, outer sleeve and inner sleeve of the adapter. Said core tube and inner sleeve can be made into one body or separated, and the core tube and outer sleeve can be joined by male-screws of the former and female-screws of the latter, and the inner sleeve or/and core tube and outer steeve can form a ring-shaped cavity into which the aluminium-plastic composite tube whose end port is expanded can be inserted, and a sealing ring can be placed on the tail end of said ring-shaped cavity. Said aluminium-plastic composite tube can be screwed into the adapter to form a tight connection. Said invented adapter is simple in structure, easy to manufacture and disassemble and assemble and its flowing resistance is low.
Description
The present invention relates to a kind of joint of plastic-aluminum MULTILAYER COMPOSITE reinforced pipe, belong to pipeline and connect fastening means.
Aluminium-plastic composite pipe, or claim plastic-aluminum MULTILAYER COMPOSITE reinforced pipe, be a kind of novel pipeline material, structure is made by glueing joint layer of aluminum alloy pipe (6b) in the middle of inside and outside two layers of polyethylene (or crosslinked polyethylene) pipe (6a, 6c) as shown in Figure 1.Intensity and deformation plasticity preferably that this pipe smooth in appearance and tool are higher.Therefore their joint is all different with the requirement of the joint of iron pipe, plastic tube or rubber pipe.
For aluminium-plastic composite pipe, many at present with joint connection shown in Figure 2.This joint is complex structure not only, and requirement on machining accuracy height, difficulty are big, the cost height, and also the internal diameter of joint core pipe is more much smaller than the internal diameter of connected aluminium-plastic composite pipe, makes pipe resistance big, has a strong impact on the fluid process.
The objective of the invention is to overcome the shortcoming of prior art, provide a kind of simple in structure, processing and easy accessibility, sealability and anti-pull-off ability strong, the plastic-aluminum combined interface tube that pipe resistance is little.
The present invention forms by overlapping in joint core pipe, joint overcoat and the joint, and cover and joint core pipe can integrated or splits in the joint; The outside thread of joint core pipe and the internal thread interlock of joint overcoat; Cover in the joint is or/and the outer inner room of joint core pipe and joint forms a toroidal cavity, and the interior external diameter of toroidal cavity is slightly larger than the interior external diameter of aluminium-plastic composite pipe, and the plastic-aluminum combined tube opening after the expansion tightly is placed in this toroidal cavity; Overlap or/and joint is arranged with screw thread outward the threaded engagement of the aluminium-plastic composite pipe after this screw thread and the expansion in the toroidal cavity part, joint.
In order to carry sealing effect, can also aluminium-plastic composite pipe terminal with joint core pipe between or/and overlap in the joint and joint core pipe between add seal ring.
Be described further below in conjunction with drawings and Examples.
Fig. 3～Fig. 9 is seven kinds of embodiments of the present invention;
Figure 10 is the processing scheme of the aluminium-plastic composite pipe that is connected with joint shown in Figure 3.
Referring to Fig. 3, the present invention is made up of cover (3) in joint core pipe (1), joint overcoat (2) and the joint, and cover (3) is connected as a single entity with joint core pipe (1) in the joint; Form a toroidal cavity in internal thread (5) interlock of the outside thread (4) of joint core pipe and joint overcoat, joint between cover (3) and the joint overcoat (2), the plastic-aluminum combined tube opening (6) after the expansion is placed in wherein.Seal ring (11) is positioned between aluminium-plastic composite pipe (6) end and the joint core pipe (1).With aluminium-plastic composite pipe (6) attachment portion, i.e. toroidal cavity part, cover (3) is provided with outside thread (7) in the joint, with internal thread (8) interlock of aluminium-plastic composite pipe (6); Joint overcoat (2) is provided with internal thread (9), with outside thread (10) interlock of aluminium-plastic composite pipe (6).
For strengthening sealing effect and improve resistance to plucking and take off ability, cover in the joint is or/and the toroidal cavity between joint core pipe and the joint overcoat can be made horn-likely, and inboard diameter is greater than outside diameter.
During installation, earlier joint overcoat (2) is inserted in aluminium-plastic composite pipe, with instrument the port of aluminium-plastic composite pipe is expanded into slightly horn-likely, can attack threading, see Figure 10 at inside and outside wall.Seal ring (11) is inserted in joint core pipe (1), again aluminium-plastic composite pipe is inserted in, at last the internal thread (5) of joint overcoat (2) is screwed in the outside thread of joint core pipe (1), tighten, promptly finish.
The other end of joint core pipe (1) can be provided with internal thread or outside thread or other interface modes, is connected with other joints or pipeline.
Because the internal diameter and the aluminium-plastic composite pipe difference in internal diameters of joint core pipe (1) are few, so flow resistance is little.
The scheme of Fig. 4 and Fig. 5 is similar to the scheme of Fig. 3, and cover (3) is integrated with joint core pipe (1) in the joint.
Embodiment shown in Figure 4, in the toroidal cavity part, cover (3) is provided with outside thread (7) and the joint overcoat is not established screw thread in the joint.Embodiment shown in Figure 4, then joint overcoat (2) be provided with internal thread (9) and in the joint cover do not establish screw thread, these two kinds of schemes all have good sealing effect and stretching resistance.
In the scheme of Fig. 6～Fig. 8, cover (3) is independent with joint core pipe (1) split in the joint.Toroidal cavity between joint core pipe (1) and the joint overcoat (2) is partly made horn shape, and is provided with seal ring (11), (12), and stretching resistance and sealing effect are fine, can be used for the connection of air conditioner pipeline etc.
The present invention also can save joint core pipe, and by cover, joint overcoat looping cavity in the joint, the plastic-aluminum combined tube opening after the expansion tightly is placed in the toroidal cavity, passes through threaded engagement between the aluminium-plastic composite pipe after joint overcoat and the expansion.As shown in Figure 9.
Advantage of the present invention and good effect are good seal performance, and anti-pull-out force is strong, the processing letter Single, easy accessibility, flow resistance is little etc.
Claims (4)
1. an aluminium-plastics composite pipe joint is characterized in that forming by overlapping in joint core pipe, joint overcoat and the joint, and cover and joint core pipe can integrated or splits in the joint; The outside thread of joint core pipe and the internal thread interlock of joint overcoat; Cover in the joint is or/and the outer inner room of joint core pipe and joint forms a toroidal cavity, and the interior external diameter of toroidal cavity is slightly larger than the interior external diameter of aluminium-plastic composite pipe, and the plastic-aluminum combined tube opening after the expansion tightly is placed in this toroidal cavity; Overlap or/and joint is arranged with screw thread outward the threaded engagement of the aluminium-plastic composite pipe after this screw thread and the expansion in the toroidal cavity part, joint.
2. aluminium-plastics composite pipe joint according to claim 1, it is characterized in that can also aluminium-plastic composite pipe terminal with joint core pipe between or/and overlap in the joint and joint core pipe between add seal ring.
3. aluminium-plastics composite pipe joint according to claim 1 is characterized in that cover in the joint or/and the toroidal cavity between joint core pipe and the joint overcoat can be made horn-likely, and inboard diameter is greater than outside diameter.
4. an aluminium-plastics composite pipe joint is characterized in that the plastic-aluminum combined tube opening after the expansion tightly is placed in the toroidal cavity by cover, joint overcoat looping cavity in the joint, and the aluminium-plastic composite pipe after joint overcoat and the expansion passes through threaded engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95114270 CN1152684A (en) | 1995-12-20 | 1995-12-20 | Aluminium-plastics composite pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95114270 CN1152684A (en) | 1995-12-20 | 1995-12-20 | Aluminium-plastics composite pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1152684A true CN1152684A (en) | 1997-06-25 |
Family
ID=5080305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95114270 Pending CN1152684A (en) | 1995-12-20 | 1995-12-20 | Aluminium-plastics composite pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1152684A (en) |
-
1995
- 1995-12-20 CN CN 95114270 patent/CN1152684A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |