CN106764150A - Snap ring locking type pipeline connecting assemble - Google Patents
Snap ring locking type pipeline connecting assemble Download PDFInfo
- Publication number
- CN106764150A CN106764150A CN201710189565.2A CN201710189565A CN106764150A CN 106764150 A CN106764150 A CN 106764150A CN 201710189565 A CN201710189565 A CN 201710189565A CN 106764150 A CN106764150 A CN 106764150A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- pipe fitting
- snap ring
- gland
- sealing ring
- 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.)
- Granted
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
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
-
- 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
- F16L21/00—Joints with sleeve or socket
- F16L21/007—Joints with sleeve or socket clamped by a wedging action
-
- 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
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a kind of snap ring locking type pipeline connecting assemble, with the acting pipe locking mechanism being made up of gland and locking member, gland is located at through hole section and is provided with horn-like tapered configuration, and locking member is made up of snap ring and plumbing chase；Coupling assembly also includes the casting die of a regulation sealing ring compression ratio, and it passes through thread helix and applies pressure to sealing ring in axial movement in pipe fitting set.The present invention stops the determination position of structure and groove with reference to top by the structure covered using gland cooperation pipe fitting, has both realized the locking of pipeline, in turn ensures that the accurate of Pipe installing size, and be detachable pipeline without other removal tool specials；Additionally, cleverly utilization space is provided with and can screw casting die in pipe fitting set, for adjusting the compression ratio of sealing ring, and then seal for pipe joints is ensured.Whole scheme cleverly structure design, the pipeline connection technology of current snap ring locking type is overturned, has especially broken bottleneck of traditional locking mode in large diameter pipeline connection, further expanded the advantage during snap ring is locked at pipeline connection technology, practicality is extremely strong, and market prospects are very wide.
Description
Technical field
The invention belongs to Quick joinker for pipeline technical field, the snap ring locking type pipeline for relating generally to inserted mode quickly connects
Head and component, are applicable to the quick connection of the pipelines such as stainless steel tube.
Background technology
The fast sealing connection of pipeline, connection of stainless steel waterpipe etc., have many kind to solve in reality is used
Scheme.How to ensure that pipeline connection possesses good sealing and enough pulling capacities, while also to have connecting convenient well
Property, it is that pipeline connects key technical problem to be solved.
Having in the prior art carries out the scheme of acting pipe locking using snap ring and the conical surface, such as：Chinese patent Authorization Notice No. is
The improved directly-pushing connecting pipe joint patent of invention of the A of CN 103062549, and China Patent Publication No. is CN101614308A
A kind of directly-pushing connecting pipe joint, both disclose self-locking when coordinating tapered configuration to realize pipeline drawing using tubing groove and snap ring
Technical scheme.But these prior arts have that some can not be ignored during practice, all, wherein：
(1) installation question of snap ring.Snap ring must snap in tubing groove can just play a part of axial lock, and existing
In the mechanism of technology, snap ring is to have to be initially charged with the horn mouth of pipe fitting set openend, it is impossible to filled in again on tubing in advance
In pipe fitting set.Because snap ring has elasticity, before pipeline is not inserted in, the interior diameter of snap ring is less than tubular outer diameter and pipeline
The bottom footpath of groove, snap ring will be also inserted first in pipe fitting set；Also exactly this reason, after snap ring is in the pipe fitting set, because loudspeaker
The concrete structure of mouth (tapered configuration) so that when pipeline is not inserted into snap ring, activity space of the snap ring in pipe fitting set becomes big, and this is just
Allow pipeline to be difficult fast and accurately to be directed at snap ring, sometimes result in snap ring when pipeline insertion pipe fitting covers, withstood on pipeline opening card
Extremely.This problem can insert examination solution for small-bore pipeline by being repeated several times, but for bigbore pipeline,
Snap ring docks almost unvanquishable problem with the accurate smooth of pipeline, because the big pipeline of bore, horn mouth size is big, and
Because the depth of large diameter pipeline connection request groove is big, the natural shrinking state size of snap ring and the outside dimension difference of pipeline
Just very greatly, the activity space and in pipe fitting set is also bigger, cannot smoothly be covered in pipe fitting set which results in snap ring
Enter on the pipeline of insertion.
(2) Pipe installing size precise positioning problem.Pipe installing is to the valve on pipeline or various equipment, and pipeline
Bending and the status requirement accurately size Control of branch；This pipe connecting structure of prior art increases in pipeline internal pressure
During can cause adjacent channel connect between position increase, finally result on pipeline various device locations skew, this
It is the problem for existing.
(3) problem of pipeline dismounting.When pipeline connection error or maintenance needs are removed, some structures need special work
Ball or ball bracket are inwardly pushed up back and could extract pipeline by tool, and what is had is not removable, it is necessary to destructive dismounting.
Additionally, in the prior art, the sealing means of pipeline connection are all and the sealing rings by the way of elastic seal ring
Compression ratio determine sealing property, the too big difficulty for being particularly easy to cause pipeline to insert sealing ring again of compression ratio；Additionally, steel pipe
With pipe fitting set and sealing ring three manufacture size not very precisely, this just causes some positions may be because of dimensional discrepancy unavoidably
And tightness is reduced, and particularly in the connection of bigbore pipeline, this phenomenon especially severe；Additionally, the compression ratio of sealing ring
Also adjusted without appropriate structure, be unfavorable for the convenient maintenance of seal for pipe joints performance, this is also that the innovation is focused on solving
Problem.
The content of the invention
Regarding to the issue above, the present invention is intended to provide a kind of be easy to snap ring to install and be easy to what pipeline was dismantled, moreover it is possible to precisely
Determine the pipeline connecting assemble of pipe fitting installation site；Present invention also offers a kind of pipeline of convenient regulation sealing ring compression ratio
Coupling assembly, changes the repair mode of the sealing problem occurred during pipeline use.
To realize the technical purpose, the solution of the present invention is：A kind of snap ring locking type pipeline connecting assemble, for pipeline enclosure
Connection, including pipeline, pipe fitting set, sealing ring and acting pipe locking mechanism, pipe fitting is cased with the openend for pipeline insertion, sealing ring
It is built in pipe fitting set, it is characterised in that：The pipe fitting set is provided with the first connection screw thread positioned at openend outer wall, and pipe fitting set is internal
It is provided with the top top that only pipeline is continued into only structure；The acting pipe locking mechanism includes a gland and a locking member；The gland
One end be opening, the other end has the through hole passed through for pipeline, and the inwall that gland is located at open section is provided with the second connection screw thread,
Gland is located at through hole section and is provided with horn-like tapered configuration, and towards open side, path is towards through-hole side for the big footpath of the tapered configuration；
Second connection thread helix screws in first and couples screw thread and makes gland be bolted in pipe fitting to put；The locking member is located on pipeline and encapsulates
In in gland, the locking member is made up of snap ring and plumbing chase, and the snap ring is fastened on plumbing chase, and the pipeline is recessed
Groove is the circle deep gouge being surrounded on pipeline outer wall；The size of the most path of the tapered configuration of gland should be less than snap ring positioned at groove
When maximum outside diameter size, the plumbing chase is located away from sealing ring, in sealing ring without phase when snap ring is stuck in plumbing chase
Interreaction force；When pipeline puts gland, snap ring is inserted into pipe fitting set on plumbing chase card, through the sealing being built in pipe fitting set
After circle is until push up only structure, gland spiral puts in pipe fitting and is axially elapsed to pipe fitting set direction, and snap ring is by the taper knot in gland
Structure is extruded and then by acting pipe locking in gland.
Used as further improving, the coupling assembly also includes the casting die of a regulation sealing ring compression ratio, the casting die
For an outer surface is provided with the rigid sleeve on the be set in pipeline of the 3rd connection screw thread, rotation force is provided with the top of the casting die
Structure；Inwall of the pipe fitting set positioned at openend is provided with the 4th connection screw thread, and the casting die is by the 3rd connection screw thread and the
Four connection thread helix finally apply pressure to sealing ring in sealing ring is moved axially in pipe fitting set；The casting die be stuck in pipeline
Snap ring on groove is without interaction force.
The smooth pad of an annulus is also built-in with as preferred scheme, between the sealing ring and casting die.
As preferred scheme, it is described 4th connection screw thread and first connection screw thread be by roller-compaction mode once
Take shape on the end wall of pipe fitting set opening.
The beneficial effects of the invention are as follows by coordinating the structure of pipe fitting set using gland, with reference to top, only structure and pipeline are recessed
The determination position of groove, had both realized the locking of pipeline axial movement, in turn ensured that the accurate of Pipe installing size, outwarded winding gland i.e.
Detachable pipeline and without other removal tool specials；Additionally, in pipe fitting set cleverly utilization space be provided with can
Casting die is screwed, for adjusting the degree that is extruded of sealing ring, and then seal for pipe joints is ensured, can be disassembled in pipe leakage
Further tightening casting die after pipe fitting set increases the compression ratio of sealing ring, pipe-repairing leak.Whole scheme cleverly structure design,
Overturned the pipeline connection technology of current snap ring locking type, especially broken traditional locking mode large diameter pipeline connection on
Bottleneck, further expands the advantage during snap ring is locked at pipeline connection technology, and practicality is extremely strong, and market prospects are very wide.
Brief description of the drawings
Fig. 1 is schematic cross-sectional view when pipeline insertion pipe fitting covers in embodiment one；
Fig. 2 is the exploded perspective view of pipeline and each component in embodiment one；
Fig. 3 is schematic cross-sectional view when pipeline insertion pipe fitting covers in embodiment two；
Fig. 4 is the exploded perspective view of pipeline and each component in embodiment two；
Fig. 5 is the pipe fitting set longitudinal sectional view of embodiment two in the present invention；
Fig. 6 is gland longitudinal sectional view of the invention；
Fig. 7 is the front view of casting die in the present invention；
Fig. 8 for Fig. 7 A-A to sectional view.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is expanded on further.In the following detailed description, only by explanation
Mode describes some one exemplary embodiments of the invention.Undoubtedly, one of ordinary skill in the art will recognize,
In the case of without departing from the spirit and scope of the present invention, described embodiment can be repaiied with a variety of modes
Just.Therefore, accompanying drawing and description are inherently illustrative, are not intended to limit the scope of the claims.
A kind of snap ring locking type pipeline connecting assemble involved in the present invention, is the connection for pipeline enclosure, the pipeline
Can be stainless steel waterpipe, or other tubing with identical function.As shown in Figure 1,2,3, 4, of the invention group
Part includes pipe fitting set 5, sealing ring 7 and acting pipe locking mechanism, and pipe fitting set 5 has the openend for the insertion of pipeline 1, has resilient close
Seal 7 is arranged on the groove position 52 inside pipe fitting set, for the sealing between pipeline 1 and pipe fitting set 5, it is ensured that water-tight.In reality
During border uses, pipe fitting set 5 can be it is straight-through can also be elbow, usually including two two-ways adapters of openend, certainly,
Can be that there are multiple openend to connect pipe more, this belongs to protection scope of the present invention, and specific openend quantity can root
Designed by those skilled in the art according to actual demand.
(the simply corresponding pipe fitting set of specific embodiment two of diagram, pipe fitting puts built-in sealing ring and top is stopped as shown in Figure 5
Structure etc. can be designed as the case may be), pipe fitting set of the invention is different from prior art, the openend of the pipe fitting set 5
Outer wall is provided with the first connection screw thread 53, and the inside of pipe fitting set 5 is provided with the top top that only pipeline is continued into only structure 51, and the structure can
To be to be located at the projection that pipe fitting covers inwall, the purpose is to not allow pipeline to continue to move axially, because if pipeline 1 is not stopped by top,
Pipeline 1 can be moved with the passage of gland 2, and snap ring 3 will be unable to locking pipe 1.
Acting pipe locking mechanism in the present invention includes a gland 2 and a locking member；One end of the gland 2 is opening, separately
One end has the through hole passed through for pipeline, as shown in Figure 6, and this is easy to pipeline to pass through the gland.Gland 2 is located at the interior of open section
Wall is provided with the second connection screw thread 22, and gland 2 is located at through hole section and is provided with horn-like tapered configuration 21, the big footpath of the tapered configuration 21
(i.e. maximum caliber), towards open side, towards through-hole side, the angle of specific tapered configuration can basis for path (i.e. lowest calibre)
Specific structure is designed and adjusts；Second connection screw thread spiral shell 22 screws in the first connection screw thread 53 makes gland be bolted in pipe fitting
Put.
Locking member in the present invention may be provided in and be packaged in gland on pipeline, and the locking member is recessed by snap ring 3 and pipeline
Groove 11 is constituted, and the snap ring 3 can be fastened on plumbing chase 11.In a particular embodiment, the cross section of snap ring 3 for it is circular (when
Can also be so other shapes), the plumbing chase 11 is to be surrounded on the circle deep gouge that cross section on pipeline outer wall is circular arc (to sink
The cross section of groove can also be other shapes)；The size of the small diameter of tapered configuration 21 should be less than snap ring positioned at groove when most
Big outside dimension, is skidded off with preventing snap ring from the through hole of gland；Plumbing chase 11 is located away from sealing ring 7, and snap ring is stuck in pipe
In sealing ring 7 without interaction force during road groove, advantage of this is that sealing ring will not be damaged；When pipeline 1 puts gland 2,
After the upper snap ring 3 of the card of plumbing chase 11 is inserted into pipe fitting set 5 until structure is stopped on top, the spiral of gland 2 is elapsed forward on pipe fitting set 5,
Snap ring 3 is extruded and then by acting pipe locking in gland by the tapered configuration 21 in gland.Because pipeline is pushed up stopping, the position of groove
It is to determine again, so the size that pipeline is connected to pipe fitting set is to determine, and is different from and need in the prior art outer tube drawing road and receive
The pipeline pressed and cause does not know with the size of pipe fitting set.
The present invention adjusts sealing ring compression ratio always according to foregoing pipe fitting set and gland structure, the one kind that devises of novelty
Casting die 4, as shown in FIG. 7 and 8, the casting die 4 for outer surface be provided with the 3rd connection screw thread 42 be set in pipeline on it is firm
Property sleeve, the top of the casting die 4 is provided with rotation force application structure 41, and this structure can be the structure of interior hexagonal etc, as long as
Can realize screwing the casting die using the instrument of such as spanner etc；It is corresponding, it is located at the inwall of openend in pipe fitting set 5
The 4th connection screw thread 54 is provided with, it is interior axially in pipe fitting set that the casting die 4 couples thread helix with the 4th by the 3rd connection screw thread
It is moved at sealing ring 3, finally applies pressure to sealing ring 3, the size of extruding force can be thus adjusted by rotary pressing member, and then
Regulation sealing ring extrusion pipe outer wall and pipe fitting cover the tightness degree of inwall.Fig. 3 and Fig. 4 are exactly specific embodiment of the invention
Two, described casting die 4 has just been embedded in the embodiment.
In order to prevent casting die in rotary course to the infringement of sealing ring, in the best mode for carrying out the invention, sealing ring 7 and casting die
The smooth pad 6 of an annulus is also built-in between 4.
Consideration based on manufacturing cost, and structure compactedness, described 4th connection screw thread and the first connection screw thread
It is to be covered on the end wall of opening in pipe fitting by the one-shot forming of roller-compaction mode.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (4)
1. a kind of snap ring locking type pipeline connecting assemble, for the connection of pipeline enclosure, including pipeline, pipe fitting set, sealing ring and pipe
Road retaining mechanism, pipe fitting is cased with the openend for pipeline insertion, and sealing ring is built in pipe fitting set, it is characterised in that：
The pipe fitting set is provided with the first connection screw thread positioned at openend outer wall, and what pipeline was continued into stopped in the internal top that is provided with of pipe fitting set
Stop structure in top；
The acting pipe locking mechanism includes a gland and a locking member；
One end of the gland is opening, and the other end has the through hole passed through for pipeline, and the inwall that gland is located at open section is provided with
Second connection screw thread, gland is located at through hole section and is provided with horn-like tapered configuration, and the big footpath of the tapered configuration is small towards open side
Footpath is towards through-hole side；Second connection thread helix screws in first and couples screw thread and makes gland be bolted in pipe fitting to put；
The locking member is located on pipeline and is packaged in gland, and the locking member is made up of snap ring and plumbing chase, the card
Ring is fastened on plumbing chase, and the plumbing chase is the circle deep gouge being surrounded on pipeline outer wall；The tapered configuration of gland
Maximum outside diameter size when the size of most path should be less than snap ring positioned at groove, the plumbing chase is located away from sealing ring,
Snap ring is when being stuck in plumbing chase in sealing ring without interaction force；
When pipeline puts gland, snap ring is inserted into pipe fitting set on plumbing chase card, straight through the sealing ring being built in pipe fitting set
After stopping structure to top, gland spiral is put in pipe fitting and is axially elapsed to pipe fitting set direction, and snap ring is squeezed by the tapered configuration in gland
It is pressed into and by acting pipe locking in gland.
2. snap ring locking type pipeline connecting assemble according to claim 1, it is characterised in that：The coupling assembly also includes
One regulation sealing ring compression ratio casting die, the casting die be an outer surface be provided with the 3rd connection screw thread be set in pipeline on it is firm
Property sleeve, is provided with rotation force application structure at the top of the casting die；Inwall of the pipe fitting set positioned at openend is provided with the 4th connection spiral shell
Line, the casting die couples thread helix with the 4th and moves axially to sealing ring in pipe fitting covers by the 3rd connection screw thread, finally
Apply pressure to sealing ring；The casting die is with the snap ring being stuck on plumbing chase without interaction force.
3. snap ring locking type pipeline connecting assemble according to claim 2, it is characterised in that the sealing ring and casting die it
Between be also built-in with the smooth pad of an annulus.
4. the snap ring locking type pipeline connecting assemble according to Claims 2 or 3, it is characterised in that the 4th connection spiral shell
Line and the first connection screw thread are covered on the end wall of opening in pipe fitting by the one-shot forming of roller-compaction mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710189565.2A CN106764150B (en) | 2017-03-27 | 2017-03-27 | Snap ring locking type pipeline connecting assemble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710189565.2A CN106764150B (en) | 2017-03-27 | 2017-03-27 | Snap ring locking type pipeline connecting assemble |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106764150A true CN106764150A (en) | 2017-05-31 |
| CN106764150B CN106764150B (en) | 2019-02-26 |
Family
ID=58966463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710189565.2A Active CN106764150B (en) | 2017-03-27 | 2017-03-27 | Snap ring locking type pipeline connecting assemble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106764150B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255194A (en) * | 2017-08-01 | 2017-10-17 | 广州长城长科贸有限公司 | The non-casting attachment structure of the full thin-walled of stainless steel tube |
| CN109185577A (en) * | 2018-09-30 | 2019-01-11 | 厦门中井科技有限公司 | Interior card clamp-press type assembling pipe joint |
| CN110864034A (en) * | 2019-09-09 | 2020-03-06 | 浙江海亮股份有限公司 | Clamping and pressing type connecting pipe fitting, clamping and pressing type composite pipe fitting and manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0424583A1 (en) * | 1988-12-02 | 1991-05-02 | Victaulic Company Of America | Pipe coupling |
| CN201180875Y (en) * | 2008-02-18 | 2009-01-14 | 吴百海 | Detachable connecting pipe fitting |
| WO2012162554A1 (en) * | 2011-05-24 | 2012-11-29 | Orbit Irrigation Products, Inc. | Conduit coupling apparatus and method |
| CN202719311U (en) * | 2012-06-01 | 2013-02-06 | 东莞市利连结管道有限公司 | Direct push connection pipe joint and direct push connection pipe joint structure |
| CN106090479A (en) * | 2015-11-06 | 2016-11-09 | 苏光彬 | Metallic conduit snap ring-type attachment structure and preparation method thereof |
| CN206637145U (en) * | 2017-03-27 | 2017-11-14 | 戴爱清 | A kind of new snap ring locking type pipeline connecting assemble |
-
2017
- 2017-03-27 CN CN201710189565.2A patent/CN106764150B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0424583A1 (en) * | 1988-12-02 | 1991-05-02 | Victaulic Company Of America | Pipe coupling |
| CN201180875Y (en) * | 2008-02-18 | 2009-01-14 | 吴百海 | Detachable connecting pipe fitting |
| WO2012162554A1 (en) * | 2011-05-24 | 2012-11-29 | Orbit Irrigation Products, Inc. | Conduit coupling apparatus and method |
| CN202719311U (en) * | 2012-06-01 | 2013-02-06 | 东莞市利连结管道有限公司 | Direct push connection pipe joint and direct push connection pipe joint structure |
| CN106090479A (en) * | 2015-11-06 | 2016-11-09 | 苏光彬 | Metallic conduit snap ring-type attachment structure and preparation method thereof |
| CN206637145U (en) * | 2017-03-27 | 2017-11-14 | 戴爱清 | A kind of new snap ring locking type pipeline connecting assemble |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255194A (en) * | 2017-08-01 | 2017-10-17 | 广州长城长科贸有限公司 | The non-casting attachment structure of the full thin-walled of stainless steel tube |
| CN109185577A (en) * | 2018-09-30 | 2019-01-11 | 厦门中井科技有限公司 | Interior card clamp-press type assembling pipe joint |
| CN110864034A (en) * | 2019-09-09 | 2020-03-06 | 浙江海亮股份有限公司 | Clamping and pressing type connecting pipe fitting, clamping and pressing type composite pipe fitting and manufacturing method |
| WO2021046670A1 (en) * | 2019-09-09 | 2021-03-18 | 浙江海亮股份有限公司 | Snap-fitting connecting pipe, snap-fitting composite pipe, and production method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106764150B (en) | 2019-02-26 |
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