CN206786172U - Pipe fitting joint structure - Google Patents
Pipe fitting joint structure Download PDFInfo
- Publication number
- CN206786172U CN206786172U CN201720612845.5U CN201720612845U CN206786172U CN 206786172 U CN206786172 U CN 206786172U CN 201720612845 U CN201720612845 U CN 201720612845U CN 206786172 U CN206786172 U CN 206786172U
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- connecting portion
- external diameter
- expansion loop
- connector
- 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 discloses a kind of pipe fitting joint structure, the connector being connected including pipe fitting and with pipe fitting one end, one end end that the connector is connected with pipe fitting is provided with connecting portion, the outer circumferential side of connecting portion is provided with tapered thread, the external diameter small end of connecting portion is relative to big end away from connector, the big end external diameter of connecting portion is less than the external diameter of connector, the outer circumferential side of connecting portion is bolted with the expansion loop that external diameter can change and change with the external diameter of connecting portion, connecting portion outer circumferential side is socketed with sealing ring with gap between expansion loop and connector, the expansion loop is located at the internal diameter that external diameter when at connecting portion small end is slightly less than pipe fitting, the outer circumferential side of expansion loop is socketed with stopper ring made of flexible material, the external diameter of stopper ring is more than the internal diameter of pipe fitting.Beneficial effect：Protective layer is destroyed due to no on pipe fitting so that pipe fitting can integrally obtain longer service life；Maintenance after being damaged for pipe fitting connecting portion in the prior art, can solve the problem of broken wall.
Description
Technical field
The utility model belongs to pipe fitting interconnection technique field, more particularly to a kind of pipe fitting that can extend pipe fitting service life
Attachment structure.
Background technology
In the prior art, pipeline connection is typically all using threaded connection, cuts with scissors upper internal thread on a pipe fitting inner wall wherein,
The external screw thread to match on the outer peripheral face of another pipe fitting in hinge, the connection of pipeline is realized by being spirally connected for internal and external screw thread.This pipe
The connected mode that road generally uses typically all can be using one layer of specially treated formation there is some defects, such as pipeline outer surface
Anti-oxidation, etch-proof protective layer to extend the service life of pipeline, but due to pipeline in connecting portion hinge screw thread so that pipeline
The protective layer of connecting portion is destroyed, and is thinned the thickness of connecting portion tube wall, reduces mechanical strength, and the shape at abrupt changes in thickness
Into stress concentration, conduit connection is caused to turn into the most weakness of whole pipeline, it is overall because of the local damage of connecting portion to lose
Effect, greatly shorten the service life of whole pipeline.Will if pipeline is embedded in wall or be arranged on some of equipment
Tight position, the breakage of connecting portion can bring very inconvenience to follow-up maintenance.
The content of the invention
To overcome drawbacks described above, the utility model technical issues that need to address are to provide nothing between a kind of conduit connection
The pipe fitting joint structure that screw thread can be achieved to be reliably connected need to be cut with scissors.
The technical solution adopted in the utility model is：A kind of pipe fitting joint structure, including pipe fitting and with pipe fitting one end phase
The connector of connection, one end end that the connector is connected with pipe fitting are provided with connecting portion, and the outer circumferential side of connecting portion is provided with cone
Shape screw thread, the external diameter small end of connecting portion is relative to big end away from connector, and the big end external diameter of connecting portion is less than the external diameter of connector, even
The outer circumferential side of socket part is bolted with the expansion loop that external diameter can change and change with the external diameter of connecting portion, and connecting portion outer circumferential side is in expansion loop
It is socketed with sealing ring with gap between connector, external diameter is slightly less than the interior of pipe fitting when the expansion loop is located at connecting portion small end
Footpath, the outer circumferential side of expansion loop are socketed with stopper ring made of flexible material, and the external diameter of stopper ring is more than the internal diameter of pipe fitting.The technology
Expansion loop in scheme can be that the mode of a trifle as shown in Figure 3 of being decided what is right and what is wrong in its side wall realizes the inflatable of external diameter
Property or the helical cut in its side wall as shown in Figure 4 form spiral shape fine crack to realize the expansiveness of external diameter, make
To be preferred, expansion loop of the present utility model uses the expansion loop of manufacturing cost relative moderate as shown in Figure 3.So such as Fig. 1 institutes
Show, when expansion loop is located at the small end of connecting portion, expansion loop is not pushed away by the crowded of connecting portion, and the external diameter of expansion loop is slightly less than pipe
Part internal diameter, the stopper ring due to being socketed in expansion loop outer circumferential side are made of flexible materials, so now, the connecting portion of connector connects
Same expansion loop, stopper ring, sealing ring can with more convenient stretch into the endoporus of pipe fitting one end, then, rotary connector, in taper
Expansion loop moves to the big end of connecting portion under the promotion of screw thread, and with the increase of connecting portion external diameter, the external diameter of expansion loop also becomes big
Until being tightly connected on pipe fitting inner wall makes to obtain reliable fastening force between connector and pipe fitting and realize and be reliably connected, simultaneously
Sealing ring external diameter when being extruded by expansion loop, connector becomes big, internal diameter diminishes, and makes to obtain effectively between pipe fitting and connector
Sealing.Pipe fitting joint structure of the present utility model is on pipe fitting without destruction protective layer so that pipe fitting integrally obtains longer make
Use the life-span；Pipe fitting joint structure of the present utility model can be used for the maintenance after pipe fitting connecting portion damage in the prior art, this
Sample can exempt brokenly the problem of wall.
Preferably, the outer circumferential side of the expansion loop is provided with annular groove, the stopper ring is socketed in annular groove.This
Sample can ensure the expansion loop outer surface of stopper ring without departing from expansion loop during pipe fitting is inserted.
Preferably, the cross-sectional area of the annular groove is more than or equal to the cross-sectional area of stopper ring.So be advantageous to
Annular groove accommodates stopper ring, it is ensured that reliable between pipe fitting and expansion loop is abutted so as to obtain effective fixation.
Preferably, the external diameter difference of the big end of the connecting portion and small end is more than the difference of pipe fitting internal diameter and expansion loop external diameter
Value.So be advantageous to obtain reliably fastening force between pipe fitting and expansion loop.
The beneficial effects of the utility model：Because pipe fitting joint structure of the present utility model is protected on pipe fitting without destruction
Layer so that pipe fitting can integrally obtain longer service life；Pipe fitting joint structure of the present utility model is used in the prior art
Maintenance after the damage of pipe fitting connecting portion, can also solve the problem of broken wall.
Brief description of the drawings
Fig. 1 is a kind of structural representation before the utility model is fastenedly connected；
Fig. 2 is a kind of structural representation after the utility model is fastenedly connected；
Fig. 3 is a kind of structural representation of expansion loop in the utility model；
Fig. 4 is another structural representation of expansion loop in the utility model.
In figure：Pipe fitting 1, expansion loop 2, sealing ring 3, connector 4, connecting portion 5, stopper ring 6.
Embodiment
Below by specific embodiment, and with reference to accompanying drawing, the technical solution of the utility model is made further specifically to retouch
State：
Embodiment：A kind of pipe fitting joint structure, as shown in figure 1, the company being connected including pipe fitting 1 and with the one end of pipe fitting 1
Fitting 4, one end end that the connector 4 is connected with pipe fitting 1 are provided with connecting portion 5, and the outer circumferential side of connecting portion 5 is provided with taper spiral shell
Line, for the external diameter small end of connecting portion 5 relative to big end away from connector 4, connecting portion 5 holds greatly external diameter to be less than the external diameter of connector 4, connects
The outer circumferential side of socket part 5 is bolted with the expansion loop 2 that external diameter can change and change with the external diameter of connecting portion 5, and the outer circumferential side of connecting portion 5 is swollen
Sealing ring 3 is socketed between packing 2 and connector 4 with gap, it is smaller that the expansion loop 2 is located at external diameter when at the small end of connecting portion 5
In the internal diameter of pipe fitting 1, the outer circumferential side of expansion loop 2 is provided with annular groove, stop made of flexible material is socketed with annular groove
Circle 6, the external diameter of stopper ring 6 are more than the internal diameter of pipe fitting 1, and the cross-sectional area of the annular groove is more than or equal to the horizontal stroke of stopper ring 6
The external diameter difference of sectional area, the connecting portion 5 end greatly and small end is more than the difference of the internal diameter of pipe fitting 1 and the external diameter of expansion loop 2.
Described pipe fitting 1 is running water pipe or petroleum pipeline；The connector 4 is tap or valve
Door；The stopper ring 6 can be annular rubber ring or annular elastomeric spring coil；The expansion loop 2 can be as shown in Figure 3
Structure, a trifle is decided what is right and what is wrong on annular sidewall to realize the expansiveness of external diameter or structure as shown in Figure 4,
Helical cut forms spiral shape fine crack to realize the expansiveness of external diameter in its side wall.
After the utility model structure as shown in Figure 1 is completed, rotary connector 4 is swollen under the promotion of tapered thread
Packing 2 moves to the big end of connecting portion 5, and with the increase of the external diameter of connecting portion 5, the external diameter of expansion loop 2 also becomes big until tightly
Being connected on the inwall of pipe fitting 1 makes to obtain reliable fastening force between connector 4 and pipe fitting 1 and realize and be reliably connected, while sealing ring 3
By expansion loop 2, connector 4 extruding when external diameter becomes big, internal diameter diminishes, make to obtain between pipe fitting 1 and connector 4 effectively close
Envelope, so as to reach, pipe fitting 1 of the present utility model, connector 4 are as shown in Figure 2 to be reliably connected.
Claims (4)
1. a kind of pipe fitting joint structure, including pipe fitting and the connector that is connected with pipe fitting one end, it is characterised in that：The company
One end end that fitting is connected with pipe fitting is provided with connecting portion, and the outer circumferential side of connecting portion is provided with tapered thread, the external diameter of connecting portion
Small end is less than the external diameter of connector relative to big end away from connector, the big end external diameter of connecting portion, and the outer circumferential side of connecting portion is bolted with
External diameter can with connecting portion external diameter change and change expansion loop, connecting portion outer circumferential side between expansion loop and connector with gap
Sealing ring is socketed with, the expansion loop is located at the internal diameter that external diameter when at connecting portion small end is slightly less than pipe fitting, the outer circumferential side of expansion loop
Stopper ring made of flexible material is socketed with, the external diameter of stopper ring is more than the internal diameter of pipe fitting.
2. pipe fitting joint structure according to claim 1, it is characterised in that：It is recessed that the outer circumferential side of the expansion loop is provided with annular
Groove, the stopper ring are socketed in annular groove.
3. pipe fitting joint structure according to claim 2, it is characterised in that：The cross-sectional area of the annular groove be more than or
Equal to the cross-sectional area of stopper ring.
4. according to the pipe fitting joint structure described in claim 1 or 2 or 3, it is characterised in that：The big end of the connecting portion and small end
External diameter difference is more than the difference of pipe fitting internal diameter and expansion loop external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720612845.5U CN206786172U (en) | 2017-05-30 | 2017-05-30 | Pipe fitting joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720612845.5U CN206786172U (en) | 2017-05-30 | 2017-05-30 | Pipe fitting joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206786172U true CN206786172U (en) | 2017-12-22 |
Family
ID=60713413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720612845.5U Expired - Fee Related CN206786172U (en) | 2017-05-30 | 2017-05-30 | Pipe fitting joint structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206786172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879466A (en) * | 2020-07-10 | 2020-11-03 | 广东鸿图武汉压铸有限公司 | Self-adaptive counter-pulling internal expansion mechanism for plugging light hole in thin wall |
-
2017
- 2017-05-30 CN CN201720612845.5U patent/CN206786172U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879466A (en) * | 2020-07-10 | 2020-11-03 | 广东鸿图武汉压铸有限公司 | Self-adaptive counter-pulling internal expansion mechanism for plugging light hole in thin wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 Termination date: 20180530 |