CN100398895C - Separating, insertion and fastening type metal connector for polytetrafluoroethylene hose assembly and assembling method thereof - Google Patents
Separating, insertion and fastening type metal connector for polytetrafluoroethylene hose assembly and assembling method thereof Download PDFInfo
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- CN100398895C CN100398895C CNB2006100283631A CN200610028363A CN100398895C CN 100398895 C CN100398895 C CN 100398895C CN B2006100283631 A CNB2006100283631 A CN B2006100283631A CN 200610028363 A CN200610028363 A CN 200610028363A CN 100398895 C CN100398895 C CN 100398895C
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Abstract
The present invention belongs to the technical field of machines, particularly to a separating, insertion and fastening type metal connector for polytetrafluoroethylene hose assembly and an assembling method thereof. The present invention is composed of nuts, a joint, an outer sleeve, an inner liner, a reinforced layer and a polytetrafluoroethylene inner pipe, wherein the inner liner is arranged in a connecting hole in the joint, the reinforced layer can be deformed as a taper and cylindrical structure via buckling, and the inner liner is composed by the respective connection of an embedded section, a flaring section, a contracted section and a stable section. The reinforced layer is covered outside the polytetrafluoroethylene inner pipe, the embedded section and the flaring section of the reinforced layer can form a gap with the inner wall of the contracted section and the outer wall of the polytetrafluoroethylene inner pipe, the gap can form a joint sealing groove, and the back end of the joint is embedded in the sealing groove. With the supporting of the inner liner, the joint sealing groove is embedded outside the polytetrafluoroethylene inner pipe so as to obtain a sealing effect, and the pulling-out force of the polytetrafluoroethylene soft pipe and the joint can be reinforced via a step shape. The present invention not only efficiently assures the largest diameter of the soft pipe, but also reduces the inner stress born by the soft pipe, and the present invention has the advantages of long service life, strong sealing performance and convenient operation.
Description
Technical field
The invention belongs to field of mechanical technique, be specifically related to a kind of polytetrafluoroethylhose hose assembly separating, insertion and fastening type metal connector and assembly method thereof.
Background technique
At present, the integral type assembling fastening type metal connector of conventional polytetrafluoroethylhose hose assembly (hereinafter to be referred as hose), form by joint, outer sleeve and three parts of nut, its assembly method is by joint being inserted in the teflon braided steel wire pipe, directly withhold outer sleeve, make pipe clamp stressed joint joint in steel wire enhancement layer, the teflon, make a certain amount of distortion of pipe generation in the teflon simultaneously, reach sealing effect to embed in the joint sealing groove.When using under certain pressure, the anti-pulling-out force of hose and joint depends on the fastening degree of outer sleeve inner spiral groove fully.Like this, interior pipe is because the internal stress that distortion is produced is bigger in the joint, and long-term use is easy to produce inner pipe joint end fatigability cracking, causes the hose oil impregnate, cisco unity malfunction.In addition, adopt integral type to withhold metal connecting piece, because the lifting of working pressure for improving the pulling-out force of hose, often to increase joint outer sleeve length, has so just caused the increase of the weight of hose own in design; Owing to adopt long adapter sleeve, the pipe surface of contact will become greatly in inserting in the joint, and connection supports power also strengthens thereupon when withholding, so joint wall thickening when requirement designs, usually can only realize by the joint internal diameter that reduces hose, thereby cause the latus rectum flow of hose own to descend.
Therefore, a kind of pipe fatigability cracking, prolongation hose working life, sealing strong polytetrafluoroethylhose hose assembly separating, insertion and fastening type metal connector and the assembly method technical goal that is those skilled in the art thereof that can reduce of research hose joint the end in.
Summary of the invention
The objective of the invention is to propose a kind of long service life, sealing strong, be applicable to working pressure and maximum operation (service) temperature polytetrafluoroethylhose hose assembly separating, insertion and fastening type metal connector and assembly method thereof.
The polytetrafluoroethylhose hose assembly separating, insertion and fastening type metal connector that the present invention proposes, form by pipe 6 in nut 1, joint 2, outer sleeve 3, neck bush 4, enhancement layer 5 and the teflon, structure after the assembling as shown in Figure 1, wherein, attachment hole 7 in the joint 2 is cylindric, has circular groove 12 on the hole wall of attachment hole 7, and neck bush 4 one ends are provided with flange 13, neck bush 4 is positioned at attachment hole 7, and its flange 13 is embedded in the circular groove 12; By withholding, enhancement layer 5 rear portions are placed in the joint rear end, enhancement layer 5 warpages are circular cone, cylindrical structural, be connected to form successively by embedding section 8, contraction section 10, flared section 9 and stable section 11, embed section 8, stable section 11 is cylindrical, it is conical that flared section 9 and contraction section 10 are, and the diameter that embeds section 8 is greater than stable section 11 diameters, makes to embed section 8 self pulling-out force greater than stable section 11; Enhancement layer 5 is placed in manages outside 6 in the teflon, form the space between pipe 6 outer walls in the inwall of the embedding section 8 of enhancement layer 5, contraction section 10 and flared section 9 and the teflon, this space constitutes fittings body seal groove 14, places that end structure and fittings body seal groove 14 structures are complementary behind the joint of fittings body seal groove 14; Pipe 6 places outside the neck bush 4 in the teflon, and joint 2 front end outer surface circumference have screw thread, and nut 1 is sleeved on joint 2 front ends; Outside the enhancement layer 5 is outer sleeve 3, is withheld by eight lobe Closing in die and tightens up outer sleeve 3, and outer sleeve 3 distortion make enhancement layer 5 firmly be connected with joint 2.
Among the present invention, enhancement layer 5 is the steel wire floors that adopt individual layer braiding or double braid.
The assembly method of the polytetrafluoroethylhose hose assembly separating, insertion and fastening type metal connector that the present invention proposes, its concrete steps are as follows:
1, nut 1 is set in joint 2 front ends, carries out nut 1 and close up;
2, neck bush 4 is positioned in the attachment hole 7 of joint 2, and corresponding enlarging part is put into neck bush 4, beats to make neck bush 4 ends form flange 13 by expansion, and it is in place that this flange 13 embeds circular groove 12 internal fixation;
3, sleeve 3 is placed in outside the enhancement layer 5;
4, by the special device instrument enhancement layer 5 is separated with pipe 6 in the teflon, make in enhancement layer 5 inwalls and the teflon and form the space between pipe 6 outer walls, constitute fittings body seal groove 14 shapes;
5, pipe 6 is middle in enhancement layer 5 that the embedding of joint rear end has been separated and the teflon, makes simultaneously and manages in the teflon between 6 insertion neck bushs 4 and joint 2 inwalls, makes fittings body seal groove 14 in place;
6, withhold with the equipment of withholding and tighten up outer sleeve 3, the distortion by outer sleeve 3 makes joint 2 firmly be connected with enhancement layer 5.
The present invention withholds by disposable, make sleeve 3 form stairstepping, enhancement layer embeds in the fittings body root groove simultaneously, make enhancement layer 5 form columniform embedding section 8, conical flared section 9 and conical contraction section 10, simultaneously under the support of neck bush, it is outer to reach sealing effect that the fittings body seal groove is embedded in the teflon pipe, by stepped, and the pulling-out force of pipe and joint in the reinforced TFE.
The present invention is through withholding, make the trapezoidal protrusion of seal groove wire, the area that is involved is less, and therefore through after withholding, seal groove embeds in the teflon hose fully, the teflon hose internal stress of bearing reduces like this, when withholding to the corresponding minimizing of power that neck bush produced, thereby more effectively guaranteed the maximum diameter of flexible pipe, in addition, flexible pipe self pulling-out force embeds the root of joint by steel wire fully, strengthens the pulling-out force of body and joint by ladder.
The present invention has long service life, the advantage that sealing is strong, easy to operate.
Description of drawings
Fig. 1 is a structural diagrams of the present invention.
Number in the figure: 1 is nut, and 2 is joint, and 3 is sleeve, 4 is neck bush, and 5 is enhancement layer, and 6 is pipe in the teflon, 7 is attachment hole, 8 is the embedding section of enhancement layer, and 9 is the flared section of enhancement layer, and 10 is the contraction section of enhancement layer, 11 is the stable section of enhancement layer, 12 is circular groove, and 13 is flange, and 14 is the fittings body seal groove.
Embodiment
Further specify the present invention below by embodiment.
Embodiment 1: following each parts are connected by mode shown in Figure 1, and the person skilled in art all can smooth implementation.Adopt pipe in the Φ 10mm teflon, its wall thickness is 1.21mm, neck bush 4 external diameters are 10.5mm, and external diameter is 16.5/18.8mm in the sleeve 3, and enhancement layer 5 adopts the steel wire floor of individual layer braiding, the position length that sleeve 3 is withheld is 138.5mm, trimming scale is 1.21mm, and withholding diameter is 16.1mm, and withholding length is 14.2mm, nut 1 is withheld and is of a size of 20.9mm, withholds height 5.8mm.
Assembly method is as follows:
1, nut 1 is set in joint 2 front ends, tightens up nut 1 by the nut Closing in die;
2, neck bush 4 is positioned in the attachment hole 7 of joint 2 in placely, puts into neck bush 4 by corresponding enlarging tool, become punching press to beat with hammer and make neck bush 4 ends form flange 13 by expansion, it is in place that this flange 13 embeds circular grooves 12 internal fixation;
3, require to tie up the flexible pipe active component according to flexible pipe length, carry out square cut along the galvanized wire edge then with galvanized wire;
4, the cone-shaped embedding of the joint that will make up has separated in the middle of enhancement layer and the interior pipe in place;
5, by mounted head machine or lathe sleeve 3 is placed in outside the enhancement layer 5.
6, withhold by eight lobe Closing in die, make enhancement layer 5 form columniform embedding section 8, conical flared section 9 and conical contraction section 10, just constitute fittings body seal groove shape between enhancement layer inwall and interior pipe 6 outer walls.
Gained is separated assembling fastening-pressing type joint be used for the supplementary material that aerospace flight vehicle uses, its performance index can reach: Maximum operating pressure 10.0MPa, serviceability temperature-55～204 ℃, high temperature bursting pressure 41.4MPa, room temperature bursting pressure 55.2MPa, impulse test 100,000 times, weight 0.35kg/m.
Embodiment 2: following each parts are connected by mode shown in Figure 1, and the person skilled in art all can smooth implementation.Adopt pipe in the Φ 25mm teflon, its wall thickness is 1.55mm, neck bush 4 external diameters are 25.5mm, and external diameter is 36.5/41.6mm in the sleeve 3, and enhancement layer 5 adopts the steel wire floor of double braid, the position length that sleeve 3 is withheld is 126.5mm, trimming scale 0.07mm, withholding diameter is 35.6mm, withholding length is 24.2mm, nut 1 is withheld and is of a size of 30.9mm, withholds highly to be 5.3mm.
Assembly method is as follows:
1, nut 1 is set in joint 2 front ends, tightens up nut 1 by the nut Closing in die;
2, neck bush 4 is positioned in the attachment hole 7 of joint 2 in placely, puts into neck bush 4 by corresponding enlarging tool, become punching press to beat with hammer and make neck bush 4 ends form flange 13 by expansion, it is in place that this flange 13 embeds circular grooves 12 internal fixation;
3, require to tie up the flexible pipe active component according to flexible pipe length, carry out square cut along the galvanized wire edge then with galvanized wire;
4, the cone-shaped embedding of the joint that will make up has separated in the middle of enhancement layer and the interior pipe in place;
5, by mounted head machine or lathe sleeve 3 is placed in outside the enhancement layer 5.
6, withhold by eight lobe Closing in die, make enhancement layer 5 form columniform embedding section 8, conical flared section 9 and conical contraction section 10, just constitute fittings body seal groove shape between enhancement layer inwall and interior pipe 6 outer walls.
Gained is separated assembling fastening-pressing type joint be used for the supplementary material that aerospace flight vehicle uses, its performance index can reach: Maximum operating pressure 6.3MPa, serviceability temperature-55～204 ℃, high temperature bursting pressure 18.9MPa, room temperature bursting pressure 25.2MPa, impulse test 100,000 times, weight 1.10kg/m.
Claims (3)
1. polytetrafluoroethylhose hose assembly separating, insertion and fastening type metal connector, form by pipe (6) in nut (1), joint (2), outer sleeve (3), neck bush (4), enhancement layer (5) and the teflon, it is characterized in that the attachment hole (7) in the joint (2) is cylindric, have circular groove (12) on the hole wall of attachment hole (7), neck bush (4) one ends are provided with flange (13), neck bush (4) is positioned at attachment hole (7), and its flange (13) is embedded in the circular groove (12); Enhancement layer (5) is outer to be outer sleeve (3), enhancement layer (5) rear portion is placed in the joint rear end, withhold by eight lobe Closing in die and to tighten up outer sleeve (3), outer sleeve (3) distortion, making enhancement layer (5) warpage is circular cone, cylindrical, enhancement layer (5) is by embedding section (8), contraction section (10), flared section (9) and stable section (11) are connected to form successively, embed section (8), stable section (11) is cylindrical, it is conical that flared section (9) and contraction section (10) are, the diameter that embeds section (8) makes to embed section (8) self pulling-out force greater than stable section (11) greater than stable section (11) diameter; Enhancement layer (5) is placed in manages outside (6) in the teflon, form the space between pipe (6) outer wall in the inwall of the embedding section (8) of enhancement layer (5), contraction section (10) and flared section (9) and the teflon, this space constitutes fittings body seal groove (14), places the joint rear end of fittings body seal groove (14) and fittings body seal groove (14) to become one; Pipe (6) is placed in outside the neck bush (4) in the teflon, and joint (2) front end outer surface circumference has screw thread, and nut (1) is sleeved on joint (2) front end.
2. polytetrafluoroethylhose hose assembly separating, insertion and fastening type metal connector according to claim 1 is characterized in that enhancement layer (5) is the steel wire floor that adopts individual layer braiding or double braid.
3. the assembly method of a polytetrafluoroethylhose hose assembly separating, insertion and fastening type metal connector as claimed in claim 1 is characterized in that concrete steps are as follows:
1. nut (1) is set in joint (2) front end, carries out nut (1) and close up;
2. neck bush (4) is positioned in the attachment hole (7) of joint (2), and corresponding enlarging part is put into neck bush (4), beats to make neck bush (4) end form flange (13) by expansion, and it is in place that this flange (13) embeds circular groove (12) internal fixation;
3. sleeve (3) is placed in outside the enhancement layer (5);
4. by the special device instrument enhancement layer (5) is separated with pipe (6) in the teflon, make in enhancement layer (5) inwall and the teflon and form the space between pipe (6) outer wall, constitute fittings body seal groove (14) shape;
5. the joint rear end is embedded in the middle of the enhancement layer (5) and the interior pipe of teflon (6) that has separated, make simultaneously and manage in the teflon between (6) insertion neck bush (4) and joint (2) inwall, make fittings body seal groove (14) in place;
6. withhold with the equipment of withholding and tighten up outer sleeve (3), the distortion by outer sleeve (3) makes joint (2) firmly be connected with enhancement layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100283631A CN100398895C (en) | 2006-06-29 | 2006-06-29 | Separating, insertion and fastening type metal connector for polytetrafluoroethylene hose assembly and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100283631A CN100398895C (en) | 2006-06-29 | 2006-06-29 | Separating, insertion and fastening type metal connector for polytetrafluoroethylene hose assembly and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1877183A CN1877183A (en) | 2006-12-13 |
| CN100398895C true CN100398895C (en) | 2008-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100283631A Active CN100398895C (en) | 2006-06-29 | 2006-06-29 | Separating, insertion and fastening type metal connector for polytetrafluoroethylene hose assembly and assembling method thereof |
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| CN (1) | CN100398895C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239357B (en) * | 2008-12-08 | 2014-01-29 | 亨利佩特里管理有限责任公司 | Vessel having a hose coupling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586720B (en) * | 2009-04-23 | 2012-05-23 | 贵州航天精工制造有限公司 | Pipeline assembly for connecting fuel server of aeroengine and preparation method thereof |
| CN102418822A (en) * | 2011-09-21 | 2012-04-18 | 四川达宇特种车辆制造厂 | Weldless metal hose coupler |
| CN106958705A (en) * | 2017-02-17 | 2017-07-18 | 蒋丽红 | A kind of hose joint |
| CN107654773A (en) * | 2017-10-31 | 2018-02-02 | 芜湖锐华暖通科技有限公司 | The adapter piece of hydraulic coupler |
| CN108916498B (en) * | 2018-08-30 | 2020-02-14 | 常州市盛士达汽车空调有限公司 | Connecting structure of R744 air conditioner pipe and conversion connecting assembly |
| CN109578728B (en) * | 2018-11-28 | 2020-11-13 | 中航光电科技股份有限公司 | Assembling process of anti-drop structure of buckling hose connector |
| CN109386671B (en) * | 2018-12-03 | 2020-06-09 | 攀钢集团工程技术有限公司 | Production method of hydraulic hose assembly for metallurgical equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085019U (en) * | 1991-03-05 | 1991-09-18 | 鞍山热能研究院设备研制厂 | Fast assembled joint for sealing oxygen blast pipe of electric furnace |
| CN1162711A (en) * | 1996-03-22 | 1997-10-22 | Smc株式会社 | Pipe joint |
| US6412825B1 (en) * | 1997-10-14 | 2002-07-02 | Nkt Flexibles I/S | Assembly of an end-fitting and a flexible pipe |
| JP2003287178A (en) * | 2002-03-28 | 2003-10-10 | Tokai Rubber Ind Ltd | Hose connecting structure |
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2006
- 2006-06-29 CN CNB2006100283631A patent/CN100398895C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085019U (en) * | 1991-03-05 | 1991-09-18 | 鞍山热能研究院设备研制厂 | Fast assembled joint for sealing oxygen blast pipe of electric furnace |
| CN1162711A (en) * | 1996-03-22 | 1997-10-22 | Smc株式会社 | Pipe joint |
| US6412825B1 (en) * | 1997-10-14 | 2002-07-02 | Nkt Flexibles I/S | Assembly of an end-fitting and a flexible pipe |
| JP2003287178A (en) * | 2002-03-28 | 2003-10-10 | Tokai Rubber Ind Ltd | Hose connecting structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239357B (en) * | 2008-12-08 | 2014-01-29 | 亨利佩特里管理有限责任公司 | Vessel having a hose coupling |
| US9022243B2 (en) | 2008-12-08 | 2015-05-05 | Henri Peteri Beheer B.V. | Vessel having a hose coupling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1877183A (en) | 2006-12-13 |
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Owner name: SHANGHAI PLASTIC RESEARCH INSTITUTE CO., LTD. Free format text: FORMER NAME: SHANGHAI PLASTIC INST. |
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Address after: Qingpu District Xujing town Shanghai city 201702 West Zhu Lu Road No. 1251 Patentee after: Co., Ltd of Shanghai Plastic Inst. Address before: 200090 Shanghai Yangshupu Road No. 1664 Patentee before: Shanghai Plastic Inst. |