CN201225484Y - Electric melting pipe fittings for embedded pipe - Google Patents
Electric melting pipe fittings for embedded pipe Download PDFInfo
- Publication number
- CN201225484Y CN201225484Y CNU2008201268525U CN200820126852U CN201225484Y CN 201225484 Y CN201225484 Y CN 201225484Y CN U2008201268525 U CNU2008201268525 U CN U2008201268525U CN 200820126852 U CN200820126852 U CN 200820126852U CN 201225484 Y CN201225484 Y CN 201225484Y
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- CN
- China
- Prior art keywords
- peep hole
- core
- resistance wire
- observation
- electric melting
- 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
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Abstract
The utility model provides an electrofusion pipe fitting used for buried pipelines, which comprises a joint main body, a heating resistance wire buried on the inner wall of the joint main body, and an observation port and two terminals exposed out the joint main body. Post heads connected with the heating resistance wire are arranged in the terminals, and an observation core is arranged in the observation port. The top of the observation core is of a taper shape, the lower end is of a column shape, the opening part of the observation port is of a reverse taper shape, and the size of the opening part is smaller than the diameter of the column part of the observation core. The observation port of the utility model has limiting function, not only fulfills the function, but also effectively avoids the loss of the inner welding pressure, and increases the using safety of the electrofusion pipe piece.
Description
Technical field
The utility model relates to the buried pipeline link, particularly a kind of electric melting pipe fittings that is used for buried pipeline.
Background technique
At present, the buried pipeline link particularly the polyethylene electric melting pipe fittings be a known technology.This electric melting pipe fittings comprises: adapter body, be embedded in the heating resistance wire of adapter body inwall and expose the peep hole and two terminal of adapter body, be provided with the wiring terminal that links to each other with heating resistance wire in the terminal, the outer wall of adapter body is provided with the peep hole that contains the peep hole core, is provided with the peep hole core in the peep hole.Wherein, heating resistance wire is used for welding process heating molten plastic pipe fitting and tubing, and wiring terminal is used for connecting the both positive and negative polarity of welding equipment, and peep hole is used to observe welding effect.Existing peep hole is the straight hole structure, any position diameter of peep hole core is all little than peep hole size, in the electric melting pipe fittings using process, and the rising that the material that melts in the heating peep hole along with resistance wire is not stopping, so usually cause the welding underpressure of welding region, produce shrinkage cavity.
Summary of the invention
The purpose of this utility model is the defective at above-mentioned prior art, and a kind of electric melting pipe fittings that is used for buried pipeline is provided, and the peep hole of this pipe fitting has limit function, can avoid the defective of the interior welds pressure loss, and safety in utilization is better.
The technological scheme taked of the utility model is to achieve these goals: a kind of electric melting pipe fittings that is used for buried pipeline, comprise adapter body, be embedded in the heating resistance wire of adapter body inwall, and expose the peep hole and two terminal of adapter body, be provided with the wiring terminal that links to each other with heating resistance wire in the terminal, be provided with the peep hole core in the peep hole, the top of described peep hole core is taper, the lower end is cylindrical, the angle of taper of described peep hole core and the length of cylindrical part are that the Kong Xin length of stretching out adapter body is determined according to the observation, and the oral area of described peep hole is inverted cone and the finish dimensional diameter less than the column part of peep hole core.Therefore described peep hole has limit function, the peep hole core can be subjected to the restriction of peep hole oral area in uphill process, thereby the height that makes the peep hole core protrude the peep hole oral area is that a fixed value is when the peep hole core rises to certain position in the welding process, just stop to rise, thereby both played the effect of peep hole, simultaneously effectively avoid the interior welds pressure loss, improved the safety in utilization of electric melting pipe fittings.
The beneficial effects of the utility model are: compared to existing technology, peep hole described in the utility model has limit function, has not only played the effect of peep hole, and has effectively avoided the interior welds pressure loss, has improved the safety in utilization of electric melting pipe fittings.
Description of drawings
Fig. 1 is the overall structure schematic representation that is used for the electric melting pipe fittings of buried pipeline described in the utility model;
Fig. 2 is the enlarged diagram of peep hole described in Fig. 1.
Among the figure: 1 adapter body, 2 heating resistance wires, 3 peep holes, 4 wiring terminals, 5 peep hole cores.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
Shown in Fig. 1-2, a kind of electric melting pipe fittings that is used for buried pipeline of the utility model, comprise: adapter body 1, be embedded in the heating resistance wire 2 of adapter body 1 inwall and expose two peep holes 3 and two terminal of adapter body 1, be provided with the wiring terminal 4 that links to each other with heating resistance wire 2 in the terminal, be provided with peep hole core 5 in the peep hole 3.Heating resistance wire 2 is used for welding process heating molten plastic pipe fitting and tubing, and wiring terminal 4 is used for connecting the both positive and negative polarity of welding equipment, and peep hole 3 is used to observe welding effect.
As shown in Figure 2, the top of described peep hole core 5 is that taper, lower end are cylindrical.The angle of taper of described peep hole core 5 and the length of cylindrical part are that hole core 5 length of stretching out adapter body 1 is determined according to the observation.The oral area of described peep hole 3 is inverted cone and the finish dimensional diameter less than the column part of peep hole core 5.
Therefore described peep hole has limit function, the peep hole core can be subjected to the restriction of peep hole oral area in uphill process, thereby the height that makes the peep hole core protrude the peep hole oral area is that a fixed value is when the peep hole core rises to certain position in the welding process, just stop to rise, thereby both played the effect of peep hole, simultaneously effectively avoid the interior welds pressure loss, improved the safety in utilization of electric melting pipe fittings.
Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.
Claims (1)
1. electric melting pipe fittings that is used for buried pipeline, comprise adapter body, be embedded in the heating resistance wire of adapter body inwall and expose the peep hole and two terminal of adapter body, be provided with the wiring terminal that links to each other with heating resistance wire in the terminal, be provided with the peep hole core in the peep hole, it is characterized in that: the top of described peep hole core is that taper, lower end are cylindrical, and the oral area of described peep hole is inverted cone and the finish dimensional diameter less than the column part of peep hole core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201268525U CN201225484Y (en) | 2008-07-02 | 2008-07-02 | Electric melting pipe fittings for embedded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201268525U CN201225484Y (en) | 2008-07-02 | 2008-07-02 | Electric melting pipe fittings for embedded pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201225484Y true CN201225484Y (en) | 2009-04-22 |
Family
ID=40598370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201268525U Expired - Fee Related CN201225484Y (en) | 2008-07-02 | 2008-07-02 | Electric melting pipe fittings for embedded pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201225484Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571220B (en) * | 2009-05-07 | 2010-12-01 | 华创天元实业发展有限责任公司 | Embedded electrofusion connecting piece and molding method |
-
2008
- 2008-07-02 CN CNU2008201268525U patent/CN201225484Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571220B (en) * | 2009-05-07 | 2010-12-01 | 华创天元实业发展有限责任公司 | Embedded electrofusion connecting piece and molding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20160702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |