CN106322008B - A kind of pipe fitting - Google Patents
A kind of pipe fitting Download PDFInfo
- Publication number
- CN106322008B CN106322008B CN201610845751.2A CN201610845751A CN106322008B CN 106322008 B CN106322008 B CN 106322008B CN 201610845751 A CN201610845751 A CN 201610845751A CN 106322008 B CN106322008 B CN 106322008B
- Authority
- CN
- China
- Prior art keywords
- retainer ring
- pipe fitting
- tubing
- bevel structure
- screw thread
- 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
Classifications
-
- 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
- F16L19/00—Joints 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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
Abstract
The invention is related to a kind of flexible pipe pipe fitting.A kind of pipe fitting, including an at least externally threaded main pipe body in one end, further include a thread cap matched with external screw thread, are equipped with a bevel structure in outer flighting front end, cyclic annular tooth form is equipped in bevel structure；It further include a retainer ring, the annular convex platform of retainer ring head is equipped with outer inclined-plane structure, is equipped with annular groove in interior bevel structure；Tubing after annular groove and cyclic annular tooth form cooperation fit sealing expander；The inner hole of ring tooth shaped position is not less than the inner hole of tubing；It is equipped between thread cap and the annular convex platform of retainer ring and promotes washer and flexible dish-shaped gasket.This structure pipe fitting realizes the connection of full-bore, and bevel structure and tubing cooperation are close smooth, reduce flow resistance, and can be reduced the growth space of Legionella, and pipeline connection is safe and reliable, easy to implement, has market popularization value.
Description
Technical field
The invention is related to building pipe field, and in particular to a kind of effective pipe fitting of flexibility.
Background technique
With the development of building pipe technology, flexible pipe is convenient with its production and transport, construction flexibly, application field extensively,
The advantages such as installation cost is low, are increasingly becoming market mainstream tubing.At present the flexible pipe of mainstream have aluminum plastic composite pipe, PE-X pipe,
PE-RT pipe, PB pipe, PE pipe etc..The connection type of such tubing is numerous, there is pincers-pressed type connection, and representative prior art such as authorizes public affairs
Accuse number " a kind of plastic-aluminum combined effective clipper type plastic pipe fitting " that is CN 2510708Y；Hot-melt adhesive paste, such as notification number CN
" connected structure of heat molten type pipe connecting piece and PPR pipe " of 202203579U；Sliding compact form connection the, such as " plastic tube of CN 2620158Y
Connection structure ".The fitting structure of the prior art, at connection tubing, because of reasons in structure flow area necking, pipeline flow amount
It is influenced to different extents, sliding tight type pipe fitting flow area reduces 8% or more, and hot melten type pipe fitting reduces 10% or more, especially
Clamper tube part, flow area reduce 20% or more.
Summary of the invention
The invention provides a kind of pipe fitting of full-bore for defect existing for the existing effective pipe fitting of flexibility, solves existing
There is the problem of pipe fitting connects necking.This structure can optimize pipeline hydraulic flow resistance, and practicability is high, have market popularization value.
To achieve the above object, the invention uses following technical scheme:
A kind of pipe fitting, including an at least externally threaded main pipe body in one end, further include a screw thread matched with external screw thread
Cap is equipped with a bevel structure in outer flighting front end, two or more the cyclic annular tooth forms incrementally increased is equipped in bevel structure；Also wrap
A retainer ring is included, there is an annular convex platform on retainer ring head, and annular convex platform is equipped with outer inclined-plane structure, is equipped with two or more in interior bevel structure
The annular groove gradually reduced；Tubing after annular groove and cyclic annular tooth form cooperation fit sealing expander；Ring tooth shaped position
Inner hole is not less than the inner hole of tubing；It is equipped between thread cap and the annular convex platform of retainer ring and promotes washer and flexible dish pad
Piece.
The technical solution that the invention can also use:
Above-mentioned retainer ring tail portion internal diameter is greater than tube outer diameter；Position internal diameter is less than tube outer diameter among retainer ring, in retainer ring
Between position inner wall on be additionally provided with barb recesses.
Inner cavity internal diameter in the middle part of above-mentioned thread cap is greater than minor diameter of internal thread；The internal screw thread of thread cap, which is equipped with two, to be run through
The groove of internal screw thread, two grooves are symmetrical；It promotes the outer diameter of washer to be less than inner cavity internal diameter and two groove maximum distances, and is greater than
Minor diameter of internal thread；Retainer ring tail portion outer diameter is greater than the inner hole of dish-shaped gasket.
The bevel structure of above-mentioned main pipe body is equipped with a sealing ring.
The bevel structure head of above-mentioned main pipe body is equipped with a stainless steel protection ring.
The bevel structure and axle center tilt angle of above-mentioned main pipe body are at 25 ° to 40 °.
A kind of pipe fitting of the invention passes through the fit structure of the annular groove in main pipe body ring-type tooth form and retainer ring
It is engaged sealing Deng by the flexible pipe after flaring, realizes the connection of full-bore, bevel structure and tubing cooperation are close smooth, reduce
Flow resistance, and can be reduced the growth space of Legionella；Dish-shaped gasket energy sustained release fastens elastic force, and pipeline connection is safe and reliable, real
It is higher with property, it is easy to implement.
Detailed description of the invention
Fig. 1, the present embodiment one are applying upper schematic cross-sectional view；
The stereo decomposing schematic cross-sectional view of Fig. 2, the present embodiment one；
The thread cap stereoscopic schematic diagram of Fig. 3, the present embodiment one；
The members schematic cross-sectional view of Fig. 4, the present embodiment one；
The main pipe body partial cutaway view schematic of Fig. 5, the present embodiment two；
Fig. 6, this pipe fitting tool expander schematic diagram.
Specific embodiment
The pipe fitting embodiment of the invention is described further with reference to the accompanying drawings.
As shown in Figure 1, 2, the pipe fitting of the embodiment one, main pipe body 1 are a female adapters, and main pipe body 1 is equipped with
One external screw thread 10 further includes a thread cap 2 matched with external screw thread 10.It is equipped with a bevel structure 11 in the front end of external screw thread 10,
Four cyclic annular tooth forms 12 incrementally increased are equipped in bevel structure 11；It further include a retainer ring 3, there is a convex annular on 3 head of retainer ring
Platform 30, annular convex platform 30 are equipped with outer inclined-plane structure 31, and four annular grooves 32 gradually reduced are equipped in interior bevel structure 31；
Annular groove 32 and cyclic annular tooth form 12 cooperate the tubing 9 after fit sealing expander；The inner hole 13 of annular 12 position of tooth form is not less than
Inner hole of pipe 90；It is equipped between thread cap 2 and the annular convex platform 30 of retainer ring 3 and promotes washer 4 and flexible dish-shaped gasket 5.
Main pipe body 1 can be elbow, threeway etc., and at least one end is equipped with external screw thread 10.Cyclic annular tooth form 12 and annular groove
32 can do quantity adjustment according to pipe fitting specification, and two or more, to ensure to seal and anti-pull-out property.
For the all-pass run-off for realizing pipe fitting connection, the inner hole 13 of 1 bevel structure 11 of this main pipe body is not less than in tubing
Hole 90, and bevel structure 11 is bonded close smoothness with inner hole of pipe 90, reduces flow resistance, and can be reduced the growth space of Legionella,
It is different from the undergauge structure of the prior art.
3 tail portion of retainer ring, 35 internal diameter is greater than 9 outer diameter of tubing；Intermediate 33 internal diameter of position of retainer ring 3 is less than 9 outer diameter of tubing,
A barb recesses 34 are additionally provided on the inner wall at position 33 among retainer ring；A plurality of, increase anti-pulling can be set in barb recesses 34
Energy.Different from the connection of the pipe fitting of the prior art, the intermediate position 33 of retainer ring 3 is less than the outer diameter of tubing 9, prevent tubing 9 is from manual
It is inserted into retainer ring 3, needs to use the specific purpose tool 8 such as attached drawing 6, the outer diameter of tubing 9 is clamped on 8 head 80 of specific purpose tool, by tubing 9
Retainer ring 3 is squeezed into, and realizes the expander of nozzle by the tool expander head 81 with taper.9 outer diameter of tubing is greater than the intermediate position of retainer ring 3
33 inner hole just enables barb recesses 34 to be caught in tubing 9, plays the role of enhancing drawing.In annular groove 32, cyclic annular tooth form
12, in the case that the tubing 9 after expander is able to achieve drawing requirement, whole hole sizes of retainer ring 3 can also be greater than the outer of tubing 9
Diameter.
The tubing 9 of the invention belongs to flexible pipe, such as PE-X, PE-RT, aluminium-plastic pipe, PB have suppleness and can
The tubing of flaring, the tubing with certain rigidity such as opposite copper tube, PPR pipe, PVC then lose this effect.
As shown in attached drawing 3,4,21 internal diameter of inner cavity among the thread cap 2 of the invention is greater than 20 internal diameter of internal screw thread；Spiral shell
The internal screw thread 20 of line cap 3 is equipped with two grooves 22 for running through internal screw thread, and two grooves 22 are symmetrical；Promote the outer diameter of washer 4 small
In 21 internal diameter of inner cavity and two 22 maximum distances of groove, and it is greater than 20 internal diameter of internal screw thread；3 tail portion of retainer ring, 35 outer diameter is greater than dish
The inner hole of shape gasket 5.
It promotes washer 4 or/and dish-shaped gasket 5 to enter the inner cavity 21 of thread cap 3 by two grooves 22, is put when by retainer ring 3
After entering and by tail portion 35 extend to it is bigger than 5 inner hole of butterfly gasket after, which will form one, at random will not take off
Out；One is formed the advantage is that one is efficient and convenient during installing and using, securely and reliably, secondly non-special after preventing abjection
Industry personnel cannot be reinstalled or reinstall the positional relationship of mistake, especially propulsion washer 4 and dish-shaped gasket 5, thirdly structure ruler
Very little relationship, the structure can save material and cost.It is difficult to be combined into one, it is asking of being commonly encountered of pipe fitting industry that component, which is scattered,
Topic, can effectively be resolved, with this configuration although increasing manufacturing procedure and machining accuracy.
As shown in figure 5, can be equipped with one in the bevel structure 11 of the main pipe body 1 of the invention places the close of sealing ring 6
Sealing groove 14, for increasing junction sealing effect, the general pipe fitting of contact face angle of the invention is few, only chamfered portion, leads to
It crosses increase sealing ring 6 and its security reliability is provided.
11 part of bevel structure of main pipe body 1, contact surface is small, and complete ring-type tooth form 12 influences seal for pipe joints straight
Connect, notch or damage and will will lead to the security risk of leakage, and main pipe body 1 generally uses copper alloy structure, hardness HV70 ~
Between HV160, hardness is partially soft, in actual production, transport and use process, is easy to damage, and is reinforced pipe main pipe body 1
Impact resistance is equipped with a stainless steel protection ring 7 with high hardness on the head of bevel structure 11, passes through anaerobic adhesive or notch etc.
It realizes and fixes.
Applicant is resistance to when the bevel structure 11 and axle center tilt angle of main pipe body 1 are not less than 25 ° by test discovery
Pull-out test can by the related request of GB/T19473.3-2004, less than 25 °, have pull-out test can not by the phenomenon that, and
Angle is smaller, and percent of pass is lower.When angle is greater than 40 °, there is the phenomenon that flaring cracking, especially aluminium-plastic pipe, cracking in tubing
Large effect is generated to the leakproofness of tubing afterwards, angle is bigger, and the probability and cracking length of cracking are also longer.The invention
Fitting structure, the bevel structure 11 of main pipe body 1 and axle center tilt angle are optimum range at 25 ° to 40 °.
The pipe fitting of the invention, it is recessed by cyclic annular tooth form and the annular on retainer ring compared with the pipe fitting in the existing field
Flexible pipe after flaring is engaged sealing by fit structure of slot etc., realizes the connection of full-bore, and bevel structure and tubing cooperate
It is close smooth, flow resistance is reduced, and can be reduced the growth space of Legionella；Dish-shaped gasket energy sustained release fastens elastic force, and pipeline connects
It connecing securely and reliably, practicability is higher, and it is easy to implement, there is market popularization value.
Claims (7)
1. a kind of pipe fitting, the main pipe body (1) including at least one end external screw thread (10) further includes one matching with external screw thread (10)
The thread cap (2) of set a, which is characterized in that bevel structure (11) are equipped in external screw thread (10) front end, on bevel structure (11)
The cyclic annular tooth form (12) incrementally increased equipped with two or more；It further include a retainer ring (3), there is an annular convex platform on retainer ring (3) head
(30), annular convex platform (30) is equipped with outer inclined-plane structure (31), is equipped with two or more the rings gradually reduced in interior bevel structure (31)
Connected in star (32)；Annular groove (32) and cyclic annular tooth form (12) cooperate, the tubing (9) after fit sealing expander；Cyclic annular tooth form
(12) inner hole (13) of position is not less than inner hole of pipe (90)；It is equipped between thread cap (2) and the annular convex platform (30) of retainer ring (3)
Washer (4) and flexible dish-shaped gasket (5) are promoted, inner cavity (21) internal diameter in the middle part of thread cap (2) is greater than in internal screw thread (20)
Diameter, inner cavity (21) wall non-threaded configurations；The internal screw thread (20) of thread cap (2) is equipped with two grooves for running through internal screw thread (20)
(22), two grooves (22) are symmetrical；Promote the outer diameter of washer (4) be less than inner cavity (21) internal diameter and two grooves (22) it is maximum away from
From, and it is greater than internal screw thread (20) internal diameter；Washer (4) and dish-shaped gasket (5) is promoted to enter thread cap (2) by two grooves (22)
Inner cavity (21), after retainer ring (3) is put into and by tail portion (35) extend to it is bigger than dish-shaped gasket (5) inner hole after, four
Component forms one.
2. a kind of pipe fitting according to claim 1, it is characterised in that: described retainer ring (3) tail portion (35) internal diameter is big
In tubing (9) outer diameter；Intermediate position (33) internal diameter of retainer ring (3) is less than tubing (9) outer diameter, in the intermediate position (33) of retainer ring (3)
Barb recesses (34) are additionally provided on inner wall.
3. a kind of pipe fitting according to claim 1 or 2, it is characterised in that: described retainer ring (3) tail portion (35) outer diameter
Greater than the inner hole of dish-shaped gasket (5).
4. a kind of pipe fitting according to claim 1, it is characterised in that: the bevel structure (11) of the main pipe body (1)
It is equipped with a sealing ring (6).
5. a kind of pipe fitting according to claim 1 or 2 or 4, it is characterised in that: the inclined-plane knot of the main pipe body (1)
Structure (11) head is equipped with a stainless steel protection ring (7).
6. a kind of pipe fitting according to claim 3, it is characterised in that: the bevel structure (11) of the main pipe body (1)
Head is equipped with a stainless steel protection ring (7).
7. a kind of pipe fitting according to claim 1, it is characterised in that: the bevel structure (11) of the main pipe body (1)
With axle center tilt angle at 25 ° to 40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845751.2A CN106322008B (en) | 2016-09-25 | 2016-09-25 | A kind of pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845751.2A CN106322008B (en) | 2016-09-25 | 2016-09-25 | A kind of pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106322008A CN106322008A (en) | 2017-01-11 |
| CN106322008B true CN106322008B (en) | 2019-01-01 |
Family
ID=57819879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610845751.2A Expired - Fee Related CN106322008B (en) | 2016-09-25 | 2016-09-25 | A kind of pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106322008B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107283814B (en) * | 2017-07-12 | 2018-08-03 | 台州半城暖通科技有限公司 | A kind of effective tube expansion head of flexibility |
| CN108413146A (en) * | 2018-03-02 | 2018-08-17 | 广东思豪流体技术有限公司 | A kind of pipe fitting |
| CN109099237A (en) * | 2018-09-28 | 2018-12-28 | 苏州丹顿机电有限公司 | A kind of pipe fitting |
| CN109623627A (en) * | 2018-12-20 | 2019-04-16 | 上海中船三井造船柴油机有限公司 | Pneumatic grinding tool and grinding method for high-pressure oil pipe Spherical Seals face |
| CN109798407A (en) * | 2019-02-26 | 2019-05-24 | 郑州博容节能科技有限公司 | Pipeline connecting structure and its pipe expander, connection method, water segregator and valve |
| CN110388524A (en) * | 2019-07-27 | 2019-10-29 | 安徽埃夫利舍建筑技术有限公司 | A kind of double containment flexibility pipe connected pipe fitting |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3265413A (en) * | 1963-07-25 | 1966-08-09 | Parker Hannifin Corp | Flared tube coupling joint and method for making the same |
| DE4141309A1 (en) * | 1991-03-05 | 1992-09-10 | Hewing Gmbh | Pipe coupling with pipe end forced axially onto sleeve - has pre-expanded pipe end only required to further expand slightly over sleeve conical end portion during assembly |
| CN2366660Y (en) * | 1998-11-06 | 2000-03-01 | 章兆余 | Joint for metal plastic composite pipeline |
| CN2469296Y (en) * | 2001-03-30 | 2002-01-02 | 张俊生 | Aluminium plastic pipe connecting joint |
| CN1502841A (en) * | 2002-11-25 | 2004-06-09 | Smc株式会社 | Pipe joint |
| CN101245883A (en) * | 2007-02-16 | 2008-08-20 | 势彼尔仕塑胶工业（马）有限公司 | A coupling system for polymeric pipes |
| CN102620079A (en) * | 2012-03-27 | 2012-08-01 | 河北省景县景渤石油机械有限公司 | Fire resistant rubber pipe assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB564233A (en) * | 1943-06-15 | 1944-09-19 | T C Enstone & Company Successo | Improvements in pipe couplings |
-
2016
- 2016-09-25 CN CN201610845751.2A patent/CN106322008B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3265413A (en) * | 1963-07-25 | 1966-08-09 | Parker Hannifin Corp | Flared tube coupling joint and method for making the same |
| DE4141309A1 (en) * | 1991-03-05 | 1992-09-10 | Hewing Gmbh | Pipe coupling with pipe end forced axially onto sleeve - has pre-expanded pipe end only required to further expand slightly over sleeve conical end portion during assembly |
| CN2366660Y (en) * | 1998-11-06 | 2000-03-01 | 章兆余 | Joint for metal plastic composite pipeline |
| CN2469296Y (en) * | 2001-03-30 | 2002-01-02 | 张俊生 | Aluminium plastic pipe connecting joint |
| CN1502841A (en) * | 2002-11-25 | 2004-06-09 | Smc株式会社 | Pipe joint |
| CN101245883A (en) * | 2007-02-16 | 2008-08-20 | 势彼尔仕塑胶工业（马）有限公司 | A coupling system for polymeric pipes |
| CN102620079A (en) * | 2012-03-27 | 2012-08-01 | 河北省景县景渤石油机械有限公司 | Fire resistant rubber pipe assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106322008A (en) | 2017-01-11 |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190325 Address after: 230000 B-1512, west of Ganquan Road, Shushan District, Hefei, Anhui. Patentee after: Anhui Eagle Dragon Industrial Design Co., Ltd. Address before: 317600 Dongping Road, new 83, Dongmen, Yuhuan, Taizhou, Zhejiang Patentee before: Huang Dexiu |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190731 Address after: 526000 East of Duanzhou Eighth Road and North of Fenghua Road, Duanzhou District, Zhaoqing City, Guangdong Province Patentee after: Guangdong Wankang Technology Co., Ltd. Address before: Ganquan road Shushan District of Hefei City, Anhui Province, 230000 West hillock road to the South Wild Garden commercial office building room B-1512 Patentee before: Anhui Eagle Dragon Industrial Design Co., Ltd. |
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| 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: 20190101 Termination date: 20190925 |