CN109667997A - Pipe fitting - Google Patents

Pipe fitting Download PDF

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Publication number
CN109667997A
CN109667997A CN201811485901.9A CN201811485901A CN109667997A CN 109667997 A CN109667997 A CN 109667997A CN 201811485901 A CN201811485901 A CN 201811485901A CN 109667997 A CN109667997 A CN 109667997A
Authority
CN
China
Prior art keywords
screw thread
tube body
wall
pipe fitting
sealing element
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.)
Pending
Application number
CN201811485901.9A
Other languages
Chinese (zh)
Inventor
陈�峰
梁三宝
周宇
张帆
谭志荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Construction Fifth Engineering Bureau Co Ltd
Original Assignee
China Construction Fifth Engineering Bureau Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Construction Fifth Engineering Bureau Co Ltd filed Critical China Construction Fifth Engineering Bureau Co Ltd
Priority to CN201811485901.9A priority Critical patent/CN109667997A/en
Publication of CN109667997A publication Critical patent/CN109667997A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0206Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/04Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L43/00Bends; Siphons
    • F16L43/02Bends; Siphons adapted to make use of special securing means

Abstract

The invention discloses pipe fittings, pipe fitting includes tube body, sealing element and nut, the outer wall of tube body is provided with external screw thread, the inner wall of tube body is provided with the first internal screw thread, first internal screw thread is used for connecting pipe, and nut is equipped with the second internal screw thread, and external screw thread is threadedly engaged with the second internal screw thread, and make the outer wall of sealing element compression pipeline, thus the gap between the inner wall of sealed tube body and the outer wall of pipeline.This pipe fitting is easily installed and dismantles, so that maintenance is more easier.Moreover, avoid using liquid raw material band and caused by pollute quality problem, and be unfavorable for the problem of disassembling and maintaining;It also avoids simultaneously using polytetrafluoroethylraw raw material, thus the phenomenon that avoiding inner wall of the pipe from being blocked by polytetrafluoroethylraw raw material.

Description

Pipe fitting
Technical field
The present invention relates to connector technical field more particularly to pipe fittings.
Background technique
Existing rigidity bearing pipe is generally required (to be threadedly coupled) using screwed connection, and is needed in the outer of pipe fitting Polytetrafluoroethylraw raw material is wound at screw thread after flax silk again, alternatively, applying liquid raw material band is again directly by pipe fitting directly at screw thread Connecting pipe, to have enough leakproofness after guaranteeing that pipe fitting is connect with pipeline.Then, using flax silk and polytetrafluoroethylene (PTFE) When raw material are connected and sealed, the polytetrafluoroethylraw raw material of winding is very few to be easy to cause leakproofness inadequate, the polytetrafluoroethyl-ne of winding Alkene raw material excessively then cause surplus too many, are not easy to install, while may cause inner wall of the pipe blocking, and have an effect on appearance; And when directlying adopt liquid raw material band, it is not easy to disassemble although solving the problems, such as leakproofness, it is also larger to water pollution, And be not easy to dismantle, lead to maintenance difficult.
Summary of the invention
For overcome the deficiencies in the prior art, it the purpose of the present invention is to provide pipe fitting, is easily installed and dismantles and just In maintenance, and sealed reliable, and water quality will not be polluted.
An object of the present invention adopts the following technical scheme that realization:
Pipe fitting, including tube body, sealing element and nut, the outer wall of the tube body are provided with external screw thread, the inner wall of the tube body It is provided with the first internal screw thread, first internal screw thread is used for connecting pipe, and the nut is equipped with the second internal screw thread, the external screw thread It is threadedly engaged with second internal screw thread, and makes the outer wall of the sealing element compression pipeline, to seal the interior of the tube body Gap between wall and the outer wall of pipeline.
Further, the nut has anti-drop end cover, and interval is formed with appearance between the anti-drop end cover and the tube body Receive chamber, the accommodating chamber for accommodating the sealing element, the anti-drop end cover can squeeze sealing member so that sealing element compressing pipe The outer wall in road.
Further, the inner wall of the tube body offers sealed groove, and the sealed groove is used to accommodate the sealing element, The pipeline can squeeze the sealing element, so that the sealing element blocks the seam between the inner wall of tube body and the outer wall of pipeline Gap.
Further, the nut has anti-drop end cover, and interval is formed with appearance between the anti-drop end cover and the tube body Receive chamber;The inner wall of the tube body offers sealed groove;The accommodating chamber and the sealed groove can accommodate the sealing Part.
Further, the sealing element is sealing ring or gasket.
Further, the both ends of the tube body are provided with the external screw thread, there are two the nut is set, two spiral shells Cap is separately connected one of them described external screw thread.
Further, the inner wall of the tube body is formed with first annular lug boss to the radial protrusion of the tube body, described First internal screw thread is set to the first annular lug boss.
Further, the outer wall of the tube body is formed with the second annular relief along the radial protrusion of the tube body, described External screw thread is set to second annular relief, and the first annular lug boss and second annular relief are along the tube body Axile displacement arrangement.
Further, the external screw thread is than first internal screw thread closer to the port of the tube body.
Further, first internal screw thread includes the first thread segment and the second thread segment, and the inner wall of the tube body is along diameter To having convexed to form annular stop portion, the annular stop portion between first thread segment and second thread segment, The annular stop portion is for supporting the pipeline.
Compared with prior art, the beneficial effects of the present invention are:
Pipe fitting of the invention includes tube body, sealing element and nut, and the outer wall of tube body is provided with external screw thread, and the inner wall of tube body is set It is equipped with the first internal screw thread, the first internal screw thread is used for connecting pipe, and nut is equipped with the second internal screw thread, external screw thread and the second internal screw thread spiral shell Line cooperation, and make the outer wall of sealing element compression pipeline, thus the gap between the inner wall of sealed tube body and the outer wall of pipeline.This The first internal screw thread is arranged in the inner wall of tube body in invention, is removably threadedly coupled by the first internal screw thread with pipeline, thus Convenient for this pipe fitting jointing pipe road, it is firm to connect, it is not easy to loosen, while convenient for disassembling this pipe fitting from pipeline, that is, be convenient for Maintenance.External screw thread is set by the outer wall in tube body, also, the inner wall of nut is equipped with the second internal screw thread, passes through the second internal screw thread It is threadedly engaged with external screw thread, so that sealing element to be pressed on to the outer wall of pipeline, and then the inner wall of sealed tube body and pipeline Gap between outer wall.Pipe fitting of the invention not only cleans, and will not pollute to water quality;And it avoids using polytetrafluoroethyl-ne Alkene raw material, thus solve the problems, such as that polytetrafluoroethylraw raw material blocks pipeline.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the pipe fitting of first embodiment of the invention;
Fig. 2 is the structural schematic diagram in pipe fitting jointing pipe road shown in FIG. 1;
Fig. 3 is the structural schematic diagram of the tube body of pipe fitting shown in FIG. 1;
Fig. 4 is the structural schematic diagram of the anti-drop end cover of pipe fitting shown in FIG. 1;
Fig. 5 is the structural schematic diagram of the pipe fitting of second embodiment of the invention;
Fig. 6 is the structural schematic diagram of the pipe fitting of third embodiment of the invention;
Fig. 7 is the structural schematic diagram in pipe fitting jointing pipe road shown in fig. 6.
In figure: 1, tube body;11, external screw thread;12, the first internal screw thread;121, the first thread segment;122, the second thread segment;13, Sealed groove;14, first annular lug boss;15, the second annular relief;16, annular stop portion;2, nut;201, accommodating chamber; 21, the second internal screw thread;22, anti-drop end cover;3, sealing element.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination Example.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", " water It is flat ", "vertical", "top", "inner", the instructions such as "outside" orientation or positional relationship be that orientation based on the figure or position are closed System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as limitation of the invention.In addition, term " first ", " second " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In description of the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, can be fixedly connected, may be a detachable connection, or be integrally connected;It can be with It is mechanical connection, is also possible to be electrically connected;It can be and be directly connected to, it can also indirectly connected through an intermediary or two Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be Concrete meaning in invention.
First embodiment:
Fig. 1-4 shows the pipe fitting of first embodiment of the invention, and pipe fitting is in long strip, and pipe fitting includes tube body 1, sealing element 3 With nut 2, the outer wall of tube body 1 is provided with external screw thread 11, and the inner wall of tube body 1 is provided with the first internal screw thread 12, the first internal screw thread 12 For connecting pipe, nut 2 is equipped with the second internal screw thread 21, and external screw thread 11 is threadedly engaged with the second internal screw thread 21, and to seal Part 3 compresses the outer wall of pipeline, thus the gap between the inner wall of sealed tube body 1 and the outer wall of pipeline.The present invention passes through in tube body 1 Inner wall be arranged the first internal screw thread 12, be removably threadedly coupled by the first internal screw thread 12 with pipeline, consequently facilitating Pipe fitting jointing pipe road, and convenient for disassembling this pipe fitting from pipeline;By the outer wall in tube body 1, external screw thread 11 is set, and And the inner wall of nut 2 is equipped with the second internal screw thread 21, is threadedly engaged by the second internal screw thread 21 with external screw thread 11, thus will Sealing element 3 is pressed on the outer wall of pipeline, and then the gap between the inner wall of sealed tube body 1 and the outer wall of pipeline;Also, by the Cooperate between two internal screw threads 21 and external screw thread 11, be not only further convenient for the installation and removal of this pipe fitting, so that maintenance is more held Easily.Moreover, avoid using liquid raw material band and caused by pollute quality problem, and be unfavorable for the problem of disassembling and maintaining; It also avoids simultaneously using polytetrafluoroethylraw raw material, thus the phenomenon that avoiding inner wall of the pipe from being blocked by polytetrafluoroethylraw raw material.It is excellent Selection of land, sealing element 3 are sealing ring or gasket.
Preferably, nut 2 has anti-drop end cover 22, and anti-drop end cover 22 is located at one end of nut 2, anti-drop end cover 22 and tube body Interval is formed with accommodating chamber 201 between 1 end, and for accommodating sealing element 3, anti-drop end cover 22 can squeeze close accommodating chamber 201 Sealing 3, so that sealing element 3 compresses the outer wall of pipeline.By the way that sealing element 3 to be accommodated in accommodating chamber 201, then pass through spiral shell in second Line 21 is threadedly engaged with external screw thread 11, so that the anti-drop end cover 22 of nut 2 squeezes sealing element 3, so that close Sealing 3 deforms and compresses the outer wall of pipeline, while sealing element 3 compresses the port of tube body 1, sealed reliable, and mounts and dismounts It is all very easy, it is convenient for safeguarding.
Preferably, the inner wall of tube body 1 offers sealed groove 13, and for sealed groove 13 for accommodating sealing element 3, pipeline can Squeeze sealing member 3, so that sealing element 3 blocks the gap between the inner wall of tube body 1 and the outer wall of pipeline.By in tube body 1 Wall is equipped with sealed groove 13, and sealed groove 13 is also equipped with sealing element 3, when pipeline is connect with this pipe fitting, the outer wall of pipeline Just sealing element 3 is squeezed, thus the further gap between the inner wall of sealed tube body 1 and the outer wall of pipeline.
Preferably, the both ends of tube body 1 are provided with external screw thread 11, and there are two the settings of nut 2, two nuts 2 referring to Fig. 3 It is separately connected one of external screw thread 11.In the present embodiment, it by the way that external screw thread 11 is arranged at the both ends of tube body 1, is not only convenient for Processing, and avoid processing full thread in the outer wall of tube body 1 and reduce the intensity of tube body 1.
Preferably, the inner wall of tube body 1 is formed with first annular lug boss 14 to the radial protrusion of tube body 1 referring to Fig. 3, the One internal screw thread 12 is set to first annular lug boss 14.First annular lug boss 14 is formed by the way that the inner wall of tube body 1 is inwardly protruding, from And can in the first internal screw thread of inwall processing 12 of tube body 1, and avoid pipeline inject tube body 1 when, the inner wall and pipeline of tube body 1 It interferes.
Further, the outer wall of tube body 1 is formed with the second lug boss along the radial protrusion of tube body 1, and external screw thread 11 is set to Second annular relief 15, first annular lug boss 14 and the second annular relief 15 are arranged along the axile displacement of tube body 1.Pass through The second lug boss is formed in the outer wall outwardly convex of tube body 1, and external screw thread 11 is set to the second lug boss, so that tube body 1 After the first internal screw thread 12 and external screw thread 11 is respectively set in first annular lug boss 14 and the second annular relief 15, tube body 1 Wall thickness can be relatively uniform, to guarantee the intensity of tube body 1, to extend the service life of this pipe fitting.Also, by by the first ring Shape lug boss 14 and the second annular relief 15 are arranged along the axial offset of tube body 1, so that the stress of tube body 1 is unlikely to concentrate on At one, so that the first internal screw thread 12, external screw thread 11 be avoided to be excessively stressed and cause to wear.
Preferably, 11 to the first internal screw thread 12 of external screw thread is closer to the port of tube body 1.Due to the needs of external screw thread 11 and nut 2 the second internal screw thread 21 cooperation, by 11 to the first internal screw thread 12 of external screw thread closer to the port of tube body 1, can shorten nut 2 Length, while it is more firm that nut 2 is connect with external screw thread 11.And it is possible to make the contact length of pipeline Yu tube body 1 It is longer, further increase the bonding strength between pipeline and tube body 1.
Preferably, the first internal screw thread 12 includes the first thread segment 121 and the second thread segment 122, the inner wall of tube body 1 is radially Annular stop portion 16 is convexed to form, annular stop portion 16 is between the first thread segment 121 and the second thread segment 122, annular Limiting section 16 is for supporting pipeline.By the setting in annular stop portion 16, when so that pipeline connecting this pipe fitting, wherein one is avoided Pipeline matches excessive first internal screw thread 12 and causes another to be not connected firmly and lean on.For example, ought wherein a root canal road and the first spiral shell When line section 121 connects, when the pipeline continues along the axial traveling of tube body 1, it will support and be limited with annular stop portion 16, from And the pipeline is avoided to connect with the second thread segment 122, to ensure that another root canal road can be threadedly engaged the second thread segment 122, and connect it is firm.
When this pipe fitting is installed, by taking the installation of one end of pipe fitting as an example, the other end copies installation: first in the close of tube body 1 Envelope groove 13 places sealing element 3, while by 2 sets of access conduit of nut, then by 3 sets of access conduit of another sealing element, then will First internal screw thread 12 of the threaded one end connection pipe body 1 of pipeline, then rotary nut 2, so that the second internal screw thread 21 is threadedly coupled outside Screw thread 11, seal chamber is compacted with the sealing element 3 in sealed groove 13 at this time.
Second embodiment:
Fig. 5 shows the pipe fitting of second embodiment of the invention, and pipe fitting is in long strip, and pipe fitting includes tube body 1,3 and of sealing element Nut 2, the outer wall of tube body 1 are provided with external screw thread 11, and the inner wall of tube body 1 is provided with the first internal screw thread 12, and the first internal screw thread 12 is used In connecting pipe, nut 2 is equipped with the second internal screw thread 21, and external screw thread 11 is threadedly engaged with the second internal screw thread 21, and makes sealing element 3 The outer wall for compressing pipeline, thus the gap between the inner wall of sealed tube body 1 and the outer wall of pipeline.The present invention passes through in tube body 1 The first internal screw thread 12 is arranged in inner wall, is removably threadedly coupled by the first internal screw thread 12 with pipeline, consequently facilitating this pipe Part connecting pipe, and convenient for disassembling this pipe fitting from pipeline;By the outer wall in tube body 1, external screw thread 11 is set, also, The inner wall of nut 2 is equipped with the second internal screw thread 21, is threadedly engaged by the second internal screw thread 21 with external screw thread 11, thus will sealing Part 3 is pressed on the outer wall of pipeline, and then the gap between the inner wall of sealed tube body 1 and the outer wall of pipeline;Also, in second Cooperate between screw thread 21 and external screw thread 11, be not only further convenient for the installation and removal of this pipe fitting, so that maintenance is more easier.And And avoid using liquid raw material band and caused by pollute quality problem, and be unfavorable for the problem of disassembling and maintaining;Simultaneously It avoids using polytetrafluoroethylraw raw material, thus the phenomenon that avoiding inner wall of the pipe from being blocked by polytetrafluoroethylraw raw material.Preferably, close Sealing 3 is sealing ring or gasket.
Preferably, nut 2 has anti-drop end cover 22, and anti-drop end cover 22 is located at one end of nut 2, anti-drop end cover 22 and tube body Interval is formed with accommodating chamber 201 between 1 end, and for accommodating sealing element 3, anti-drop end cover 22 can squeeze close accommodating chamber 201 Sealing 3, so that sealing element 3 compresses the outer wall of pipeline.By the way that sealing element 3 to be accommodated in accommodating chamber 201, then pass through spiral shell in second Line 21 is threadedly engaged with external screw thread 11, so that the anti-drop end cover 22 of nut 2 squeezes sealing element 3, so that close Sealing 3 deforms and compresses the outer wall of pipeline, while sealing element 3 compresses the port of tube body 1, sealed reliable, and mounts and dismounts It is all very easy, it is convenient for safeguarding.
Preferably, the inner wall of tube body 1 offers sealed groove 13, and for sealed groove 13 for accommodating sealing element 3, pipeline can Squeeze sealing member 3, so that sealing element 3 blocks the gap between the inner wall of tube body 1 and the outer wall of pipeline.By in tube body 1 Wall is equipped with sealed groove 13, and sealed groove 13 is also equipped with sealing element 3, when pipeline is connect with this pipe fitting, the outer wall of pipeline Just sealing element 3 is squeezed, thus the further gap between the inner wall of sealed tube body 1 and the outer wall of pipeline.
Wherein, the external screw thread 11 of the outer wall of tube body 1 is full thread, is convenient for a procedure process finishing.
Preferably, the inner wall of tube body 1 is formed with first annular lug boss 14 to the radial protrusion of tube body 1 referring to Fig. 3, the One internal screw thread 12 is set to first annular lug boss 14.First annular lug boss 14 is formed by the way that the inner wall of tube body 1 is inwardly protruding, from And can in the first internal screw thread of inwall processing 12 of tube body 1, and avoid pipeline inject tube body 1 when, the inner wall and pipeline of tube body 1 It interferes.
When this pipe fitting is installed, by taking the installation of one end of pipe fitting as an example, the other end is copied: first recessed in the sealing of tube body 1 Slot 13 places sealing element 3, while by 2 sets of access conduit of nut, then by 3 sets of access conduit of another sealing element, then by pipeline Threaded one end connection pipe body 1 the first internal screw thread 12, then rotary nut 2, so that the second internal screw thread 21 is threadedly coupled external screw thread 11, seal chamber is compacted with the sealing element 3 in sealed groove 13 at this time.
3rd embodiment:
Fig. 6 and Fig. 7 shows the pipe fitting of third embodiment of the invention, and 3rd embodiment is provided including first embodiment pipe Part is different from first embodiment: pipe fitting is in syphon shape, it will be understood that pipe fitting can also be other shapes, shape It does not limit, and its shape has no effect on pipe fitting in the present invention and is easily installed and dismantles, and the characteristics of sealed reliable.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto, The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention Claimed range.

Claims (10)

1. pipe fitting, it is characterised in that: including tube body, sealing element and nut, the outer wall of the tube body is provided with external screw thread, the pipe The inner wall of body is provided with the first internal screw thread, and first internal screw thread is used for connecting pipe, and the nut is equipped with the second internal screw thread, institute It states external screw thread to be threadedly engaged with second internal screw thread, and makes the outer wall of the sealing element compression pipeline, thus described in sealing Gap between the inner wall of tube body and the outer wall of pipeline.
2. pipe fitting as described in claim 1, it is characterised in that: the nut has anti-drop end cover, the anti-drop end cover and institute It states interval between tube body and is formed with accommodating chamber, for accommodating the sealing element, the anti-drop end cover can squeeze the accommodating chamber Sealing element, so that sealing element compresses the outer wall of pipeline.
3. pipe fitting as described in claim 1, it is characterised in that: the inner wall of the tube body offers sealed groove, the sealing For groove for accommodating the sealing element, the pipeline can squeeze the sealing element, so that the sealing element blocks the interior of tube body Gap between wall and the outer wall of pipeline.
4. pipe fitting as described in claim 1, it is characterised in that: the nut has anti-drop end cover, the anti-drop end cover and institute It states interval between tube body and is formed with accommodating chamber;The inner wall of the tube body offers sealed groove;The accommodating chamber and the sealing Groove can accommodate the sealing element.
5. pipe fitting as described in claim 1, it is characterised in that: the sealing element is sealing ring or gasket.
6. pipe fitting as described in claim 1, it is characterised in that: the both ends of the tube body are provided with the external screw thread, described There are two nut is set, two nuts are separately connected one of them described external screw thread.
7. pipe fitting as described in claim 1, it is characterised in that: the inner wall of the tube body is formed to the radial protrusion of the tube body There is first annular lug boss, first internal screw thread is set to the first annular lug boss.
8. pipe fitting as claimed in claim 7, it is characterised in that: the outer wall of the tube body is formed along the radial protrusion of the tube body There is the second annular relief, the external screw thread is set to second annular relief, the first annular lug boss and described the Second ring lug boss is arranged along the axile displacement of the tube body.
9. pipe fitting as claimed in claim 8, it is characterised in that: the external screw thread is than first internal screw thread closer to the pipe The port of body.
10. pipe fitting as described in claim 1, it is characterised in that: first internal screw thread includes the first thread segment and the second spiral shell Line section, the inner wall of the tube body have radially convexed to form annular stop portion, and the annular stop portion is located at first screw thread Between section and second thread segment, the annular stop portion is for supporting the pipeline.
CN201811485901.9A 2018-12-06 2018-12-06 Pipe fitting Pending CN109667997A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811485901.9A CN109667997A (en) 2018-12-06 2018-12-06 Pipe fitting

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Application Number Priority Date Filing Date Title
CN201811485901.9A CN109667997A (en) 2018-12-06 2018-12-06 Pipe fitting

Publications (1)

Publication Number Publication Date
CN109667997A true CN109667997A (en) 2019-04-23

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Application Number Title Priority Date Filing Date
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Country Link
CN (1) CN109667997A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111022793A (en) * 2019-12-23 2020-04-17 江门市长优实业有限公司 Pipeline connecting structure for resin tower
CN112283468A (en) * 2020-10-12 2021-01-29 危文强 Water tap steel water inlet pipe connection sealing structure

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CN201764152U (en) * 2010-08-17 2011-03-16 杭州宏升塑胶有限公司 Mute drain pipe fitting connecting structure
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CN202327417U (en) * 2011-12-08 2012-07-11 聂臻 Threaded-connection structure of sounding pipe
CN203628075U (en) * 2013-12-26 2014-06-04 北京长吉加油设备有限公司 Combined type cutting sleeve joint for gas path
CN104822980A (en) * 2012-10-01 2015-08-05 恩特格里斯公司 Connection system and method
CN108050319A (en) * 2017-12-22 2018-05-18 芜湖荣基实业有限公司 A kind of metal straight pipe sealed fitting

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2264523C1 (en) * 2004-09-15 2005-11-20 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Production string or casing pipe connection in oil and gas wells
CN101307846A (en) * 2008-02-18 2008-11-19 吴百海 Detachable connecting pipe fitting
CN201764152U (en) * 2010-08-17 2011-03-16 杭州宏升塑胶有限公司 Mute drain pipe fitting connecting structure
CN202252540U (en) * 2011-10-04 2012-05-30 赵安 Quick tee joint with female adapter for pipeline
CN202327417U (en) * 2011-12-08 2012-07-11 聂臻 Threaded-connection structure of sounding pipe
CN104822980A (en) * 2012-10-01 2015-08-05 恩特格里斯公司 Connection system and method
CN203628075U (en) * 2013-12-26 2014-06-04 北京长吉加油设备有限公司 Combined type cutting sleeve joint for gas path
CN108050319A (en) * 2017-12-22 2018-05-18 芜湖荣基实业有限公司 A kind of metal straight pipe sealed fitting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111022793A (en) * 2019-12-23 2020-04-17 江门市长优实业有限公司 Pipeline connecting structure for resin tower
CN112283468A (en) * 2020-10-12 2021-01-29 危文强 Water tap steel water inlet pipe connection sealing structure

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