CN2373672Y - Abnormal diameter joint speecial for aluminium plastic composited tube - Google Patents
Abnormal diameter joint speecial for aluminium plastic composited tube Download PDFInfo
- Publication number
- CN2373672Y CN2373672Y CN 99211416 CN99211416U CN2373672Y CN 2373672 Y CN2373672 Y CN 2373672Y CN 99211416 CN99211416 CN 99211416 CN 99211416 U CN99211416 U CN 99211416U CN 2373672 Y CN2373672 Y CN 2373672Y
- Authority
- CN
- China
- Prior art keywords
- joint
- shape
- plastic composite
- plastic
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a special abnormal diameter joint for aluminum-plastic composite pipes, which comprises joint core pipes and a joint outer casing pipe. Outer threads are arranged on two ends of the joint core pipes to be engaged with inner threads of the joint outer casing pipe. The special abnormal diameter joint for aluminum-plastic composite pipes is characterized in that the joint core pipes are diameter unequal plastic pipes on two ends of a straight pipe. O-shaped grooves are arranged in two ends of the joint core pipes. O-shaped rubber sealing rings with conical sections are embedded in the O-shaped grooves. The end heads of the O-shaped rubber sealing rings are provided with plastic O-shaped pressing rings. The joint outer casing pipe is a plastic sleeve-shaped pipe, and an end opening of the joint outer casing pipe is provided with a plastic O-shaped breaking type tightening ring. Compared with a copper pipe joint, the cost of the special abnormal diameter joint for aluminum-plastic composite pipes is lowered, and the special abnormal diameter joint for aluminum-plastic composite pipes can not be corroded. The sealing performance and the stability of the special abnormal diameter joint for aluminum-plastic composite pipes are enhanced. The special abnormal diameter joint for aluminum-plastic composite pipes is suitable for the connection of aluminum-plastic composite pipelines.
Description
The utility model relates to a kind of fluid pipe fitting joint.
The existing reducing coupling joint that is used for plastic-aluminum combined pipeline is a copper tube joint, and copper tube joint is made up of joint core pipe, joint outer sleeve, and there are outside thread and the engagement of joint outer sleeve internal thread in joint core pipe two ends, and sealing is by the plastic band sealing.Copper pipe pipe fitting joint cost is higher, corrosion easily, and pipe fitting connects sealing and less stable.
The purpose of this utility model provides the special-purpose reducing coupling of a kind of aluminium-plastic composite pipe, reduces the pipe fitting joint cost, prevents corrosion, improves pipe fitting connective stability and sealing.
The technological scheme of the special-purpose reducing coupling of the utility model aluminium-plastic composite pipe is: it comprises joint core pipe and joint outer sleeve, there are outside thread and the engagement of joint outer sleeve internal thread in joint core pipe two ends, it is characterized in that: joint core pipe is the not isometrical plastic tubes in straight tube two ends, O shape open-ended formula groove is arranged in the two ends, groove is embedded in awl cross section O shape rubber seal, there is plastics O shape retainer ring the seal ring termination, plastics O shape retainer ring is the shoulder block formula, small end is pressed on the O shape rubber seal, the point of shoulder retaining is at joint core tube opening, the joint outer sleeve is a plastic sheath shape pipe, there is one in its port and has internal thread, and be stuck in the interior plastics O shape disconnecting type tightening ring of joint outer sleeve port.
Above-mentioned O shape disconnecting type tightening ring profile is the awl frustoconic shape, matches with joint outer sleeve port inner cone truncated conical shape.
The awl bottom section of above-mentioned awl cross section O shape rubber seal is a rectangle.
Above-mentioned joint core pipe middle part has reducing to stop rib.
The utility model has the advantages that: reduce than copper tube joint cost; Prevent the pipe fitting corrosion; The effect of picking up the slip joint of plastic core pipe joint avoids temperature variation to produce spalling; O shape awl cross section rubber seal can be born bigger jam-packed pressure, and pipe seal and stability are improved greatly, is applicable to that plastic-aluminum manages connection again.
Below in conjunction with drawings and Examples the utility model is described in detail:
Fig. 1 is the structural representation of the utility model installment state.
As shown in the figure, the special-purpose reducing coupling of aluminium-plastic composite pipe comprises joint core pipe 1 and joint outer sleeve 2, there are outside thread and the engagement of joint outer sleeve internal thread in joint core pipe 1 two ends, joint core pipe 1 is the not isometrical plastic tubes in straight tube two ends, the O connected in star is arranged in the two ends, groove is embedded in awl cross section O shape rubber seal, there is plastics O shape retainer ring the seal ring termination, plastics O shape retainer ring is the shoulder block formula, small end is pressed on the O shape rubber seal, and point of shoulder keeps off at joint core tube opening, and the joint outer sleeve is a plastic sheath shape pipe, there is one in its port and has internal thread, and be stuck in the interior plastics O shape disconnecting type tightening ring of joint outer sleeve port.O shape disconnecting type tightening ring profile is the awl frustoconic shape, matches with joint outer sleeve port inner cone truncated conical shape, and the awl bottom section of awl cross section O shape rubber seal is a rectangle.During installation, aluminium-plastic composite pipe 6,7 is inserted from joint outer sleeve head, pass tightening ring 5, retainer ring 4 and seal ring 3, extend reducing and stop that rib 8,9 place's roof pressures screw, the tightening ring internal thread increases surface friction drag, keeps joint firm.
Claims (4)
1, the special-purpose reducing coupling of a kind of aluminium-plastic composite pipe, comprise joint core pipe and joint outer sleeve, there are outside thread and the engagement of joint outer sleeve internal thread in joint core pipe two ends, it is characterized in that: joint core pipe is the not isometrical plastic tubes in straight tube two ends, O shape open-ended formula groove is arranged in the two ends, groove is embedded in awl cross section O shape rubber seal, there is plastics O shape retainer ring the seal ring termination, plastics O shape retainer ring is the shoulder block formula, small end is pressed on the O shape rubber seal, and point of shoulder keeps off at joint core tube opening, and the joint outer sleeve is a plastic sheath shape pipe, there is one in its port and has internal thread, and be stuck in the interior plastics O shape disconnecting type tightening ring of joint outer sleeve port.
2, the special-purpose reducing coupling of aluminium-plastic composite pipe according to claim 1, it is characterized in that: described O shape disconnecting type tightening ring profile is the awl frustoconic shape, matches with joint outer sleeve port inner cone truncated conical shape.
3, the special-purpose reducing coupling of aluminium-plastic composite pipe according to claim 1, it is characterized in that: the awl bottom section of described awl cross section O shape rubber seal is a rectangle.
4, the special-purpose equal coupling of aluminium-plastic composite pipe according to claim 1 is characterized in that: described joint core pipe middle part has reducing to stop rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211416 CN2373672Y (en) | 1999-05-12 | 1999-05-12 | Abnormal diameter joint speecial for aluminium plastic composited tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211416 CN2373672Y (en) | 1999-05-12 | 1999-05-12 | Abnormal diameter joint speecial for aluminium plastic composited tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2373672Y true CN2373672Y (en) | 2000-04-12 |
Family
ID=34004374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99211416 Expired - Fee Related CN2373672Y (en) | 1999-05-12 | 1999-05-12 | Abnormal diameter joint speecial for aluminium plastic composited tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2373672Y (en) |
-
1999
- 1999-05-12 CN CN 99211416 patent/CN2373672Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |