CN101614308B - Directly-pushing connecting pipe joint - Google Patents
Directly-pushing connecting pipe joint Download PDFInfo
- Publication number
- CN101614308B CN101614308B CN2009100404894A CN200910040489A CN101614308B CN 101614308 B CN101614308 B CN 101614308B CN 2009100404894 A CN2009100404894 A CN 2009100404894A CN 200910040489 A CN200910040489 A CN 200910040489A CN 101614308 B CN101614308 B CN 101614308B
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- hole
- connected tube
- connecting pipe
- snap ring
- elastic opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/088—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention relates to a directly-pushing connecting pipe joint comprising a joint body (3) with a through hole (2) for the insertion of a connecting pipe (1) to be connected. A sealing rubber ring (5) forming a water-tight seal with the body of the connecting pipe (1) to be connected is mounted in the through hole (2), stepped holes respectively having a large interior and a small exterior are respectively arranged at both ends of the through hole (2); the outer small hole is a sealing section (6) and has an inside diameter adaptive to the outer diameter of the connecting pipe (1) to be connected; the inner large hole is a horn hole (7) with a large mouth facing inward; a gap is formed between the inner wall of the horn hole (7) and the connecting pipe (1) to be connected; the sealing rubber ring (5) is mounted at the innermost end of the gap which is also provided with an elastic open clasp ring (8); and a circular clasp ring groove (9) corresponding to the elastic open clasp ring (8) is arranged outside the connecting pipe (1) to be connected. The groove in the joint body (2) of the connecting pipe (1) is directly arranged on the inner end wall of the horn hole (7) so that the joint body avoids generating great curvature change in a very short time and can be made by once profiling a cold expanding pipe to save raw materials and decrease the cost.
Description
Technical field
The present invention relates to a kind of pipe joint, especially relate to a kind of directly-pushing connecting pipe joint.
Background technique
Pipeline connects general by pipe joint, and general connected tube and joint also have the linkage structure that adopts the internal tooth slotted collar by being threaded.Employing elastic opening snap ring that also has and conical surface combination directly push away linkage structure, connected tube can push and plug directly into that joint body connects, but is subject to the conical surface and elastic opening snap ring and can not extracts.
Existing a kind of pipe joint, comprise joint body with the through hole that can supply the connected tube insertion, have groove in the through hole O-ring seal that constitutes water-stop with the connected tube pipe shaft is housed, the through hole two ends are provided with big mouth bellmouth orifice inwardly, form the space between bellmouth orifice inwall and the connected tube, shooting property slotted collar in the space; Connected tube has the circumferential clasp groove corresponding to the elastic opening snap ring outward.When connected tube inserts like this elastic opening snap ring top spreading is inserted in the circumferential clasp groove, wedging when connected tube is pulled out and can not extracting.
This scheme has following deficiency:
At first, because the groove of O-ring seal is installed to be out on the through-hole wall of joint body, and have between the inner terminal of bellmouth orifice at interval, referring to Fig. 1, so just make the manufacturing of joint body produce many problems: if adopt the car product, promptly get on the bus at joint body with lathe and make groove and bellmouth orifice, then the wall thickness of joint body will increase greatly, cost of material and processing cost can rise about about 4 times, and pipe joint will be produced in enormous quantities.
They are two years old, make joint body if adopt pattern cold expanding pipe legal system, then because the interval between O-ring seal groove and the bellmouth orifice generally is very little (big and waste material), big curvature changing is very difficult will to allow joint body produce so in very short length, can only secondary pattern cold expanding pipe, increased processing cost equally.
In addition, the width of O-ring seal groove forms and has relatively high expectations, because if recess width is wideer than O-ring seal, O-ring seal can be taken out of easily when connected tube inserts, if recess width is narrower than O-ring seal, then limited the distortion of seal ring and shortened the seal ring life-span easily, and the life-span of this joint is by the decision of life-span of seal ring.
Be exactly in addition, the last closing in always of the big end of the bellmouth orifice on the joint body, to excessively be connected with the through hole of the external diameter of adaptive connected tube after closing up, adopting what method to form all can not meet at right angles, especially the pipe method that rises is necessarily to have excessive circular arc, sometimes excessively the radius of circular arc is also not little, when the radius of excessive circular arc during greater than the middle footpath of the most frequently used round and elastic slotted collar, in the time of can take place inserting connected tube with the elastic opening snap ring by dieback in the excessive circular arc position that the big end of bellmouth orifice closes up and can not spreading (referring to Fig. 2), even the distortion of elastic opening snap ring top, connected tube is inserted the situation of not advancing not connect.
Summary of the invention
First purpose of the present invention, just to provide a kind of conservation greatly and processing cost, O-ring seal also be the joint body long service life and can not take place because the elastic opening snap ring can not be made connected tube insert the directly-pushing connecting pipe joint that does not advance to be connected the endless sentiments condition by spreading by dieback.
Above-mentioned purpose of the present invention realizes by following technological scheme:
A kind of directly-pushing connecting pipe joint, comprise joint body 3 with the through hole 2 that can supply connected tube 1 insertion, it is characterized in that: described through hole 2 two ends are interior big outer little shoulder hole, outside port aperture is the section of sealing 6, its internal diameter adapts to the connected tube external diameter, form the space between macropore 7 inwalls of the inside and the connected tube, the O-ring seal 5 and the elastic opening snap ring 8 that constitute water-stop with the connected tube pipe shaft are arranged, the described connected tube 1 outer circumferential clasp groove 9 that has corresponding to the elastic opening snap ring in the space.
On the basis of the above, the present invention also has following various modification:
Described the inside macropore is a big mouth bellmouth orifice 7 inwardly, and described O-ring seal 5 is installed in the inner terminal in space.
The cross section of described O-ring seal 5 surrounds for circle or by the adaptive bellmouth orifice inwall of outer arc, the cambered outwards interior outer arc of inner arc, and the internal diameter of O-ring seal 5 is less than connected tube 1 external diameter, so that constitute water-stop with connected tube.
Described O-ring seal 5 is installed in the groove interior 4 of adaptive O-ring seal 5 outer arcs of being opened on the bellmouth orifice 7 inner end walls.
The middle footpath of described elastic opening snap ring 8 is greater than the external diameter of connected tube, described circumferential clasp groove 9 cross sections be groove depth less than elastic opening snap ring 8 cross sections half, the upper end, both sides has the groove of circular arc chamfering, makes things convenient for elastic opening snap ring 8 to stick into or be ejected groove 9.
Be useful on the positioning step of connected tube location in the middle of the described through hole 2.
On the basis of the above, another object of the present invention be realize connected tube be easy to change and dismounting, for this reason, the present invention can do further improvement:
In the described shoulder hole, also be provided with tube drawing top tube 11 outside the elastic opening snap ring 8, leave gap 12 between the described shoulder hole port aperture section of sealing 6 internal diameters and the connected tube external diameter, so that unlocking tool inserts.
In the described shoulder hole, also be provided with tube drawing top tube 11 outside the elastic opening snap ring 8, leave gap 12 between the described shoulder hole port aperture section of sealing 6 internal diameters and the connected tube external diameter, inwardly pull pipe top tube so that unlocking tool inserts.
The chamfering of the inner osculum of described bellmouth orifice should be less than half of elastic opening snap ring 8 cross sections.
Described joint body is joints such as straight-through, elbow, threeway or four-way.
Compared with prior art, because the groove in the joint body is directly opened on the bellmouth orifice inner end wall, avoided producing excessive curvature changing at very short length spigot body, can adopt a pattern cold expanding pipe to make, save raw material and reduced cost, and, will not take place to be inserted the situation of not advancing not connect by the spreading connected tube by dieback because be O-ring seal after the elastic opening snap ring.Semi-open O-ring seal groove is processed to form conveniently, does not influence the working life of O-ring seal.
Description of drawings
Fig. 1 is immediate prior art pipe joint structure cross-sectional schematic;
Fig. 2 is the pipe joint connected tube of Fig. 1 cross-sectional schematic with snap ring dieback situation when inserting;
Fig. 3 is the structure cross-sectional schematic of the embodiment of the invention one;
Fig. 4 is the structure cross-sectional schematic of the embodiment of the invention two;
Fig. 5 is the O-ring seal cross-sectional schematic of Fig. 4;
Fig. 6 is the structure cross-sectional schematic of the embodiment of the invention three;
Fig. 7 is the structure cross-sectional schematic of the embodiment of the invention four;
Fig. 8 is the structure cross-sectional schematic of the embodiment of the invention 5;
Fig. 9 is the structure cross-sectional schematic in embodiment of the invention land;
Figure 10 is the assembly structure cross-sectional schematic of embodiment land before taking over construction.
Embodiment
Among the figure: 1-connected tube, 2-through hole, 3-joint body, 4-O-ring seal groove, 5-O-ring seal, the 6-section of sealing, the 7-bellmouth orifice, 8-elastic opening snap ring, 9-circumferential clasp groove, 10-positioning step, 11-tube drawing top tube, the 12-gap, the interval between 13-groove and the bellmouth orifice, the big end of the 14-bellmouth orifice excessive circular arc that closes up.
Be illustrated in figure 1 as immediate prior art constructions cross-sectional schematic, have at interval 13 between O-ring seal groove in the joint body through hole and the inner terminal of bellmouth orifice, form it then or adopt the car method for making material walls will be thick or want secondary to rise and manage the processing charges rising.
In addition, referring to Fig. 2, when it inserts for pipe joint connected tube of Fig. 1 with the signal of analysing and observe of snap ring dieback situation, close up always owing to the big end that connects bellmouth orifice is last, to excessively be connected with the through hole of the external diameter of adaptive connected tube after closing up, this is necessarily to have excessive circular arc, when the radius of excessive circular arc during greater than the middle footpath of round and elastic slotted collar, in the time of can take place inserting connected tube with the elastic opening snap ring by dieback in the excessive circular arc position that the big end of bellmouth orifice closes up and can not spreading, connected tube is inserted the situation of not advancing not connect.
As shown in Figure 3, pipe joint embodiment one of the present invention, comprise joint body 3 with the through hole 2 that can supply connected tube 1 insertion, the O-ring seal 5 that constitutes water-stop with the connected tube pipe shaft is housed in the through hole 2, the internal diameter of O-ring seal 5 is less than connected tube 1 external diameter, so that constitute water-stop with connected tube.
Be useful on the positioning step of connected tube location in the middle of the through hole 2, through hole 2 two ends are interior big outer little shoulder hole, outside port aperture is the section of sealing 6, its internal diameter adapts to connected tube 1 external diameter, the macropore of the inside is a big mouth bellmouth orifice 7 inwardly, form the space between bellmouth orifice 7 inwalls and the connected tube 1, O-ring seal 5 is installed in the inner terminal in space, shooting property slotted collar 8 also in the space, open elastic opening snap ring top when making things convenient for connected tube to insert greater than the external diameter of connected tube in the middle footpath of elastic opening snap ring 8.
The cross section of this routine elastic opening snap ring 8 is circular, and the cross section of circumferential clasp groove 9 is a groove depth less than half arc groove of elastic opening snap ring cross section, extracts connected tube after conveniently having instrument that the elastic opening snap ring is ejected from the circumferential clasp groove.
The axial section in the space between bellmouth orifice 7 inwalls and the connected tube 1 is a wedge-like space, so, when connected tube was inserted joint body, bigger space inside the wedge-like space, elastic opening snap ring 8 quilt top can be inserted in the circumferential clasp groove 9 outside the connected tube 1 by spreading.And when extracting connected tube 1, elastic opening snap ring 8 to the point place in wedge-like space, can not be pulled out it by the wedging connected tube by band from joint body.
Because O-ring seal directly just is mounted in the inner terminal in the space between bellmouth orifice 7 inwalls and the connected tube 1, needn't slot separately, avoided producing excessive curvature changing, can adopt a pattern cold expanding pipe to make, saved raw material and reduced cost at very short length spigot body.
Figure 4 shows that the sectional view of embodiments of the invention two, be that with example one difference the cross section of described O-ring seal bar is is that the interior outer arc of cambered outwards arc surrounds (referring to Fig. 5) by the adaptive bellmouth orifice inwall of outer arc, inner arc.
Embodiment three shown in Figure 6, be that with example one difference described O-ring seal 5 is installed in the groove 4 of the adaptive O-ring seal of being opened on the bellmouth orifice 7 inner end walls 5, since bellmouth orifice be big mouthful inwardly, even if on wall, slot, can avoid in very short length, will allowing joint body produce big curvature changing equally.
Embodiment four shown in Figure 7, be among the described through hole 2 two ends shoulder holes bellmouth orifice 7 inside with example three differences, also be provided with tube drawing top tube 11 outside the elastic opening snap ring 8, leave gap 12 between the through hole 2 port aperture section of sealing internal diameters and the connected tube external diameter, convenient 12 stretch into from the gap with instrument, tube drawing top tube 11 is inwardly pushed up, elastic opening snap ring 8 is ejected the top behind bigger space, the inside, wedge-like space, connected tube 1 can be extracted out in joint body 3 from circumferential clasp groove 9, referring to Fig. 6.
Schematic representation after pipe joint embodiment land shown in Figure 9 connects connected tube, comparing the macropore 7 that difference is described through hole 2 the insides with example one is not bellmouth orifice, the port aperture section of sealing 6 roll extrusion after adapter is sealed.Assembly structure cross-sectional schematic before taking over construction is seen Figure 10, the two ends of joint body when plant produced is dispatched from the factory be not interior big outside little shoulder hole, do not have the port aperture section of sealing 6, have only the connected tube of insertion just to seal afterwards and form the section of sealing 6 with the instrument roll extrusion.
Above-mentioned joint body is all straight coupling, but can be used for angle coupling or threeway, cross fitting fully.
Claims (1)
1. directly-pushing connecting pipe joint, comprise joint body (3) with the through hole (2) that can supply connected tube (1) insertion, it is characterized in that: described through hole (2) two ends are interior big outer little shoulder hole, outside port aperture is the section of sealing (6), its internal diameter adapts to the connected tube external diameter, the macropore of the inside is a big mouth bellmouth orifice (7) inwardly, form the space between bellmouth orifice (7) inwall and the connected tube, the O-ring seal (5) and the elastic opening snap ring (8) that constitute water-stop with the connected tube pipe shaft are arranged, the outer circumferential clasp groove (9) that has corresponding to the elastic opening snap ring of described connected tube (1) in the space; Described O-ring seal (5) is installed in the groove (4) of adaptive O-ring seal (5) outer arc of being opened on the inner terminal, bellmouth orifice (7) inner end wall in space; The cross section of described O-ring seal (5) surrounds for circle or by the adaptive bellmouth orifice inwall of outer arc, the cambered outwards interior outer arc of inner arc; The cross section of described elastic opening snap ring (8) is circular; The middle footpath of described elastic opening snap ring (8) is greater than the external diameter of connected tube, described circumferential clasp groove (9) cross section be groove depth less than elastic opening snap ring (8) cross section half, the upper end, both sides has the groove of circular arc chamfering, makes things convenient for elastic opening snap ring (8) to stick into or be ejected circumferential clasp groove (9); In the described shoulder hole, also be provided with tube drawing top tube (11) outside the elastic opening snap ring (8), leave gap (12) between the described shoulder hole port aperture section of sealing (6) internal diameter and the connected tube external diameter, so that unlocking tool inserts.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100404894A CN101614308B (en) | 2009-06-23 | 2009-06-23 | Directly-pushing connecting pipe joint |
| PCT/CN2010/000887 WO2010148637A1 (en) | 2009-06-23 | 2010-06-18 | Connector for straight push connecting pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100404894A CN101614308B (en) | 2009-06-23 | 2009-06-23 | Directly-pushing connecting pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101614308A CN101614308A (en) | 2009-12-30 |
| CN101614308B true CN101614308B (en) | 2011-01-26 |
Family
ID=41494130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100404894A Active CN101614308B (en) | 2009-06-23 | 2009-06-23 | Directly-pushing connecting pipe joint |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101614308B (en) |
| WO (1) | WO2010148637A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929587A (en) * | 2010-06-21 | 2010-12-29 | 新兴铸管股份有限公司 | Heavy-calibre circlip self-rivet connecting ductile cast iron pipe |
| CN103062549B (en) * | 2013-02-06 | 2015-10-28 | 张晓晖 | The directly-pushing connecting pipe joint improved |
| CN103775774B (en) * | 2014-01-28 | 2017-10-10 | 张颂文 | Directly-pushing connecting pipe joint |
| CN107504297A (en) * | 2017-02-24 | 2017-12-22 | 黄浩 | Thin-wall stainless steel pipe fitting interconnects tube head with tubing |
| CN107091382B (en) * | 2017-05-18 | 2024-01-19 | 潘汝锦 | Self-locking rigid pipe connector with inner joint |
| CN114320381A (en) * | 2021-12-08 | 2022-04-12 | 北京中煤矿山工程有限公司 | Water stopping device for preventing through holes from leaking water and processing method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3596939A (en) * | 1968-08-15 | 1971-08-03 | Glenn J Gibson | Tube joint having sealing and crimping means |
| DE19725557C1 (en) * | 1997-06-12 | 1999-02-04 | Mannesmann Ag | Pipe press connection |
| US6488319B2 (en) * | 2001-04-26 | 2002-12-03 | Jim Jones | Self restrained pressure gasket |
| CN2610198Y (en) * | 2003-04-15 | 2004-04-07 | 杨阀门产业有限公司 | Improved structure of pipe joint |
| CN201434171Y (en) * | 2009-06-03 | 2010-03-31 | 伍婧绫 | Direct push connecting pipe joint |
-
2009
- 2009-06-23 CN CN2009100404894A patent/CN101614308B/en active Active
-
2010
- 2010-06-18 WO PCT/CN2010/000887 patent/WO2010148637A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN101614308A (en) | 2009-12-30 |
| WO2010148637A1 (en) | 2010-12-29 |
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Owner name: DONGGUAN CITYLINK WORLDPIPE CO., LTD. Free format text: FORMER OWNER: WU JINGLING Effective date: 20120514 |
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Free format text: CORRECT: ADDRESS; FROM: 510100 GUANGZHOU, GUANGDONG PROVINCE TO: 523000 DONGGUAN, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120514 Address after: Changping Zhen Shu Village 523000 Guangdong city of Dongguan Province Patentee after: Dongguan City Link World Pipe Co.,Ltd. Address before: 1406 room 176, South 510100, Guangzhou, Guangdong, Yuexiu Patentee before: Wu Jingling |
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Effective date of registration: 20161031 Address after: 528244, two, lane two, Heshun soup Village Development Zone, Lishui Town, Nanhai, Guangdong, Foshan Patentee after: Foshan Yitong union Technology Co Ltd Address before: Changping Zhen Shu Village 523000 Guangdong city of Dongguan Province Patentee before: Dongguan City Link World Pipe Co.,Ltd. |