CN107061908A - External circular type attachment structure and pipe-line system - Google Patents
External circular type attachment structure and pipe-line system Download PDFInfo
- Publication number
- CN107061908A CN107061908A CN201710406429.4A CN201710406429A CN107061908A CN 107061908 A CN107061908 A CN 107061908A CN 201710406429 A CN201710406429 A CN 201710406429A CN 107061908 A CN107061908 A CN 107061908A
- Authority
- CN
- China
- Prior art keywords
- long cylinder
- installation portion
- mandrel
- attachment structure
- connection end
- 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
Links
- 238000009434 installation Methods 0.000 claims abstract description 49
- 238000005253 cladding Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
- F16L37/1225—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members using a retaining member the extremities of which, e.g. in the form of a U, engage behind a shoulder of both parts
Abstract
The present invention relates to technical field of pipeline connection, more particularly, to a kind of external circular type attachment structure and pipe-line system, to alleviate complex, the higher technical problem of cost of assembling present in prior art, including：Mandrel, the first long cylinder, the second long cylinder and anchor ear；The connection end of first long cylinder is set in one end of mandrel, and the connection end of the second long cylinder is set in the other end of mandrel and offseted with the connection end of the first long cylinder；Anchor ear covers the part of the part of the connection end of the first long cylinder and the connection end of the second long cylinder and the relative position of lock in the axial direction with radial direction the first long cylinder and the second long cylinder simultaneously.By above-mentioned connected mode, can lock the first long cylinder and the second long cylinder with radial direction in the axial direction.The installation of two pipelines can be realized by simply installing, assembling mode is simple and easy to apply, and cost is relatively low.
Description
Technical field
The present invention relates to technical field of pipeline connection, more particularly, to a kind of external circular type attachment structure and pipe-line system.
Background technology
Pipeline connected mode of the prior art has a variety of：
For example it is attached by flange, flange connection is the flange being put into pad on two mouths of pipe of a pair of fixations
Centre, being tensed with bolt makes a kind of detachable connector that it is combined closely.Thus mainly solved in the design of flange connection
The problem of be to prevent dielectric leakage.Flange connects the preferable intensity of local and compactness, and applicable size range is wide, in equipment and
It can be applied on pipeline, so using more universal.But when flange is connected, it is impossible to soon assembly or disassembly, assemble more multiple
It is miscellaneous and cost is higher.
Thus existing connected mode assembling is complex, and the higher technical problem of cost turns into people's skill urgently to be resolved hurrily
Art problem.
The content of the invention
It is an object of the invention to provide a kind of external circular type attachment structure and pipe-line system, exist in the prior art to alleviate
Assembling it is complex, the higher technical problem of cost.
In order to solve the above technical problems, the technical scheme that the present invention is provided is：
A kind of external circular type attachment structure, including：Mandrel, the first long cylinder, the second long cylinder and anchor ear；
The connection end of the first long cylinder is set in one end of the mandrel, and the connection end of the second long cylinder is set in institute
State the other end of mandrel and offseted with the connection end of the described first long cylinder；The anchor ear covers the company of the described first long cylinder simultaneously
Connect part and the first long cylinder that locks in the axial direction with radial direction of the part at end and the connection end of the second long cylinder
With the relative position of the described second long cylinder.
Further, circumferentially direction is provided with mounting groove to the outer peripheral face of the mandrel, in the assembled state, the core
The quantity for the mounting groove that the part of the connection end for stretching into the described first long cylinder of axle is set stretches into second length with the mandrel
The quantity for the mounting groove that the part of the connection end of cylinder is set is equal.
Further, the mandrel is provided with four mounting grooves, four mounting grooves and is provided with sealing ring.
Further, the described first long cylinder includes the first long cylinder main body and the first long cylinder installation portion, first length
The diameter of cylinder installation portion is more than the diameter of the described first long cylinder main body, and the first long cylinder main body is pacified with the described first long cylinder
Dress is seamlessly transitted between portion.
Further, one end away from the described first long cylinder main body of the described first long cylinder installation portion is provided with radially
The first flange that direction stretches out, in the assembled state, the end face of first flange offset with the described second long cylinder；
The inwall being internally provided with from the described first long cylinder installation portion of the first long cylinder installation portion is extended inwardly to form
Be used for limit the first limit baffle ring of the mandrel built-in length.
Further, the described second long cylinder includes the second long cylinder main body and the second long cylinder installation portion,
The diameter of the second long cylinder installation portion is more than the diameter of the described second long cylinder main body, and the second long cylinder master
Seamlessly transitted between body and the second long cylinder installation portion.
Further, one end away from the described second long cylinder main body of the described second long cylinder installation portion is provided with radially
The second flange that direction stretches out, in the assembled state, the end face of second flange offset with first flange part；
The inwall being internally provided with from the described second long cylinder installation portion of the second long cylinder installation portion is extended inwardly to form
Be used for limit the second limit baffle ring of the mandrel built-in length.
Further, the anchor ear includes the part of the first long cylinder installation portion described in continued circling and second length
The part of cylinder installation portion and the cladding ring with opening, and distinguish from corresponding two free ends of opening of the cladding ring
To be formed two that stretch out relative the first otic placode and the second otic placode；
The first mounting hole and the second mounting hole, described first are relatively set with first otic placode and second otic placode
Otic placode and second otic placode are by the fastener also cross first mounting hole and second mounting hole with locking.
Further, the cladding ring is provided with for while accommodating first flange and described in circumferential direction
The fin of second flange.
A kind of pipe-line system, including above-mentioned external circular type attachment structure.
With reference to above technical scheme, the beneficial effect that the present invention can reach is：
The connection end of first long cylinder is set in one end of mandrel, the connection end of the second long cylinder is set in the another of mandrel
Hold, and the connection end of the first long cylinder and the connection end of the second long cylinder offset, and are then grown the first long cylinder and second by anchor ear
The link position locking of cylinder.By above-mentioned connected mode, can lock the first long cylinder and the with radial direction in the axial direction
Two long cylinders.The installation of two pipelines can be realized by simply installing, assembling mode is simple and easy to apply, and cost is relatively low.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the assembled state of external circular type attachment structure provided in an embodiment of the present invention；
Fig. 2 is the sectional view of the assembled state of external circular type attachment structure provided in an embodiment of the present invention；
Fig. 3 is the structural representation of I parts in Fig. 2；
Fig. 4 is the structural representation of mandrel；
Fig. 5 is the sectional view of the first long cylinder；
Fig. 6 is the sectional view of the second long cylinder；
Fig. 7 is the overall structure diagram of anchor ear.
Icon：100- mandrels；The long cylinders of 200- first；The long cylinders of 300- second；400- anchor ears；110- mounting grooves；
The long cylinder main bodys of 210- first；The long cylinder installation portions of 220- first；The flanges of 221- first；The limit baffle rings of 222- first；310-
Two long cylinder main bodys；The long cylinder installation portions of 320- second；The flanges of 321- second；The limit baffle rings of 322- second；410- coats ring；
The otic placodes of 420- first；The otic placodes of 430- second；411- fins.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Embodiment 1 and embodiment 2 are described in detail below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of the assembled state of external circular type attachment structure provided in an embodiment of the present invention；Fig. 2 is this hair
The sectional view of the assembled state for the external circular type attachment structure that bright embodiment is provided；Fig. 3 is the structural representation of I parts in Fig. 2；Figure
4 be the structural representation of mandrel；5 be the sectional view of the first long cylinder；Fig. 6 is the sectional view of the second long cylinder；Fig. 7 is the entirety of anchor ear
Structural representation.
Embodiment 1
A kind of external circular type attachment structure is present embodiments provided, please with reference to Fig. 1 to Fig. 7, including：Mandrel 100, first
Long cylinder 200, the second long cylinder 300 and anchor ear 400；
The connection end of first long cylinder 200 is set in one end of mandrel 100, and the connection end of the second long cylinder 300 is set in mandrel
100 other end and offseted with the connection end of the first long cylinder 200；Anchor ear 400 covers the connection end of the first long cylinder 200 simultaneously
Simultaneously grown in the axial direction with the long cylinder 200 and second of radial direction locking first part of part and the connection end of the second long cylinder 300
The relative position of cylinder 300.
The assemble method of the first long cylinder 300 of long cylinder 200 and second is simply described below：
The connection end of first long cylinder 200 is set in one end of mandrel 100, the connection end of the second long cylinder 300 is set in
The other end of mandrel 100, and the connection end of the first long cylinder 200 and the connection end of the second long cylinder 300 offset, and then passes through anchor ear
400 lock the link position of the first long cylinder 300 of long cylinder 200 and second.
The beneficial effect that above-mentioned connected mode can reach：
By above-mentioned connected mode, can lock the first long cylinder of long cylinder 200 and second with radial direction in the axial direction
300.The installation of two pipelines can be realized by simply installing, assembling mode is simple and easy to apply.
Shape and structure below to mandrel 100 describes in detail as follows：
Circumferentially direction is provided with mounting groove 110 to the outer peripheral face of mandrel 100, in the assembled state, and mandrel 100 stretches into
The quantity for the mounting groove 110 that the part of the connection end of one long cylinder 200 is set stretches into the connection end of the second long cylinder 300 with mandrel 100
Part set mounting groove 110 quantity it is equal.
Further, mandrel 100 is provided with four mounting grooves 110, four mounting grooves 110 and is provided with sealing ring.
In the assembled state, the outer surface of sealing ring is contacted with the inner surface of the first long cylinder 300 of long cylinder 200 and second, and first
Deformed under the squeezing action of the long cylinder 300 of long cylinder 200 and second, so as to increase sealing ring and the first long cylinder of long cylinder 200 and second
The contact area of 300 inner surface, realizes the fixation and sealing of the long cylinder 300 of the long cylinder 200 and second of mandrel 100 and first.
One of ordinary skill in the art should be appreciated that the mounting groove 110 of the other quantity under the premise of without departing from present inventive concept should also be as
Within the scope of protection of present invention.
Further, mandrel 100 is set to hollow cylindrical structure, and multiple mounting grooves 110 are on the side face of mandrel 100
Uniform arrangement.
Further, mounting groove 110 is set to annular groove, and sealing ring is set to O-ring seal.Art technology
Personnel should be appreciated that the mounting groove 110 of the other shapes under the premise of without departing from present inventive concept should also be as requiring by invention
Within the scope of protection.
Shape and structure below to the first long cylinder 200 describes in detail as follows：
In the alternative of the present embodiment：
First long cylinder 200 includes the first long cylinder installation portion 220 of long cylinder main body 210 and first, the first long cylinder installation portion 220
Diameter be more than the first long cylinder main body 210 diameter, and between the first long cylinder installation portion 220 of long cylinder main body 210 and first put down
Slip over and cross.
One end away from the first long cylinder main body 210 of first long cylinder installation portion 220, which is provided with, radially to stretch out
The first flange 221, in the assembled state, the end face of the first flange 221 offsets with the second long cylinder 300.
First long cylinder installation portion 220 is internally provided with what is extended inwardly to form from the inwall of the first long cylinder installation portion 220
The first limit baffle ring 222 for limiting the built-in length of mandrel 100.
Shape and structure below to the second long cylinder 300 describes in detail as follows：
Second long cylinder 300 includes the second long cylinder installation portion 320 of long cylinder main body 310 and second, the second long cylinder installation portion 320
Diameter be more than the second long cylinder main body 310 diameter, and between the second long cylinder installation portion 320 of long cylinder main body 310 and second put down
Slip over and cross.
One end away from the second long cylinder main body 310 of second long cylinder installation portion 320, which is provided with, radially to stretch out
The second flange 321, in the assembled state, the end face of the second flange 321 offsets for 221 with the first flange；
Second long cylinder installation portion 320 is internally provided with what is extended inwardly to form from the inwall of the second long cylinder installation portion 320
The second limit baffle ring 322 for limiting the built-in length of mandrel 100.
Shape and structure below to anchor ear 400 describes in detail as follows：
Anchor ear 400 includes the part of the long cylinder installation portion 220 of continued circling first and the part of the second long cylinder installation portion 320
And the cladding ring 410 with opening, and stretch out to be formed respectively from corresponding two free ends of opening of cladding ring 410
Two relative the first otic placodes 420 and the second otic placode 430.
Further, the first mounting hole and the second installation are relatively set with the first otic placode 420 and the second otic placode 430
Hole, the first otic placode 420 and the second otic placode 430 are by the fastener also cross the first mounting hole and the second mounting hole with locking.
More preferably, the first mounting hole is unthreaded hole, and the second mounting hole is screwed hole, or, the first mounting hole is screwed hole, the second peace
Dress hole is unthreaded hole, and bolt is also cross the first mounting hole and the second mounting hole and by nut locking, by adjusting the first otic placode
420 and second otic placode 430 distance to adjust the locking degree of the first long cylinder 300 of long cylinder 200 and second.
Further, cladding ring 410 is provided with for while the first flange 221 and second of receiving is convex in circumferential direction
The fin 411 of edge 321.Under the assembled state of the first long cylinder 300 of long cylinder 200 and second, the first flange of the first long cylinder 200
221 and second second flange 321 of long cylinder 300 abut that form the loop configuration of superposition, above-mentioned fin 411 is hollow simultaneously
And the first flange 221 and the second flange 321 in overlaying state are accommodated completely, can be with complete by the above-mentioned structure of fin 411
The relative position of the complete long cylinder 300 of the long cylinder 200 and second of locking first, it is to avoid the first long cylinder 300 of long cylinder 200 and second is along axis side
To motion.
Embodiment 2
A kind of pipe-line system is present embodiments provided, includes the external circular type attachment structure of embodiment 1.
External circular type attachment structure is specifically included：
Mandrel 100, the first long cylinder 200, the second long cylinder 300 and anchor ear 400.Wherein, the connection end set of the first long cylinder 200
One end loaded on mandrel 100, the connection end of the second long cylinder 300 be set in the other end of mandrel 100 and with the first long cylinder 200
Connection end offsets；Anchor ear 400 covers the portion of the part of the connection end of the first long cylinder 200 and the connection end of the second long cylinder 300 simultaneously
Point and in the axial direction with radial direction locking the first long cylinder 300 of long cylinder 200 and second relative position.
The assemble method of the first long cylinder 300 of long cylinder 200 and second is simply described below：
The connection end of first long cylinder 200 is set in one end of mandrel 100, the connection end of the second long cylinder 300 is set in
The other end of mandrel 100, and the connection end of the first long cylinder 200 and the connection end of the second long cylinder 300 offset, and then passes through anchor ear
400 lock the link position of the first long cylinder 300 of long cylinder 200 and second.
The beneficial effect that above-mentioned connected mode can reach：
By above-mentioned connected mode, can lock the first long cylinder of long cylinder 200 and second with radial direction in the axial direction
300.The installation of two pipelines can be realized by simply installing, assembling mode is simple and easy to apply.
In addition, the pipe-line system that the present embodiment is provided can include between multiple pipelines, adjacent channel by above-mentioned
Connected mode is to realize connection.Certainly, in order to realize effective connection, the connection end (such as one end or two ends) of pipeline all should be with
The first above-mentioned long cylinder 200 is identical with the structure of the connection end of the second long cylinder 300.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of external circular type attachment structure, it is characterised in that including：Mandrel, the first long cylinder, the second long cylinder and anchor ear；
The connection end of the first long cylinder is set in one end of the mandrel, and the connection end of the second long cylinder is set in the core
The other end of axle and offseted with the connection end of the described first long cylinder；The anchor ear covers the connection end of the described first long cylinder simultaneously
Part and the second long cylinder connection end part and lock in the axial direction with the radial direction first long cylinder and institute
State the relative position of the second long cylinder.
2. external circular type attachment structure according to claim 1, it is characterised in that
Circumferentially direction is provided with mounting groove to the outer peripheral face of the mandrel, in the assembled state, and the mandrel stretches into described
The quantity for the mounting groove that the part of the connection end of one long cylinder is set stretches into the portion of the connection end of the described second long cylinder with the mandrel
The quantity for setting up the mounting groove put separately is equal.
3. external circular type attachment structure according to claim 1, it is characterised in that
The mandrel is provided with four mounting grooves, four mounting grooves and is provided with sealing ring.
4. external circular type attachment structure according to claim 1, it is characterised in that
The first long cylinder includes the first long cylinder main body and the first long cylinder installation portion, and the diameter of the first long cylinder installation portion is big
It is smoothed between the diameter of the described first long cylinder main body, and the first long cylinder main body and the first long cylinder installation portion
Cross.
5. external circular type attachment structure according to claim 1, it is characterised in that
One end away from the described first long cylinder main body of the first long cylinder installation portion is provided with what is radially stretched out
First flange, in the assembled state, the end face of first flange offset with the described second long cylinder；
The first long cylinder installation portion is internally provided with the use extended inwardly to form from the inwall of the described first long cylinder installation portion
In the first limit baffle ring for limiting the mandrel built-in length.
6. external circular type attachment structure according to claim 1, it is characterised in that
The second long cylinder includes the second long cylinder main body and the second long cylinder installation portion,
The diameter of the second long cylinder installation portion be more than the described second long cylinder main body diameter, and the second long cylinder main body with
Seamlessly transitted between the second long cylinder installation portion.
7. external circular type attachment structure according to claim 5, it is characterised in that
One end away from the described second long cylinder main body of the second long cylinder installation portion is provided with what is radially stretched out
Second flange, in the assembled state, the end face of second flange offset with first flange part；
The second long cylinder installation portion is internally provided with the use extended inwardly to form from the inwall of the described second long cylinder installation portion
In the second limit baffle ring for limiting the mandrel built-in length.
8. external circular type attachment structure according to claim 7, it is characterised in that
The anchor ear includes the part of the first long cylinder installation portion described in continued circling and the part of the second long cylinder installation portion
And the cladding ring with opening, and stretch out what is formed respectively from corresponding two free ends of opening of the cladding ring
Two relative the first otic placodes and the second otic placode；
The first mounting hole and the second mounting hole, first otic placode are relatively set with first otic placode and second otic placode
With second otic placode by the fastener also cross first mounting hole and second mounting hole with locking.
9. external circular type attachment structure according to claim 8, it is characterised in that
The cladding ring is provided with for while accommodating the fin of first flange and second flange in circumferential direction.
10. a kind of pipe-line system, it is characterised in that including the external circular type attachment structure as described in claim any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406429.4A CN107061908A (en) | 2017-06-01 | 2017-06-01 | External circular type attachment structure and pipe-line system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406429.4A CN107061908A (en) | 2017-06-01 | 2017-06-01 | External circular type attachment structure and pipe-line system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107061908A true CN107061908A (en) | 2017-08-18 |
Family
ID=59615506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710406429.4A Pending CN107061908A (en) | 2017-06-01 | 2017-06-01 | External circular type attachment structure and pipe-line system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107061908A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2819254A1 (en) * | 1977-05-06 | 1978-11-16 | Symalit Lizenz Ag | PIPE CONNECTION |
| CN201561210U (en) * | 2009-11-06 | 2010-08-25 | 北汽福田汽车股份有限公司 | Pipeline connection structure |
| CN201661263U (en) * | 2010-04-30 | 2010-12-01 | 王寿明 | Thermal production mandrel type bushing head |
| CN103822034A (en) * | 2014-02-27 | 2014-05-28 | 苏氏工业科学技术（北京）有限公司 | Sealing hoop and connecting structure that sealing hoop connects flange plate |
| CN204062274U (en) * | 2014-05-30 | 2014-12-31 | 广州市傲派自动化设备有限公司 | A kind of locking hood type rapid pipe joint of wind-force feed system |
| WO2016091297A1 (en) * | 2014-12-10 | 2016-06-16 | Husqvarna Ab | Connecting element for one or more flexible tubes with improved locking arrangement |
| CN106439283A (en) * | 2016-10-18 | 2017-02-22 | 曾广新 | Connecting pipe system |
| CN206786199U (en) * | 2017-06-01 | 2017-12-22 | 曾广新 | External circular type attachment structure and pipe-line system |
-
2017
- 2017-06-01 CN CN201710406429.4A patent/CN107061908A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2819254A1 (en) * | 1977-05-06 | 1978-11-16 | Symalit Lizenz Ag | PIPE CONNECTION |
| CN201561210U (en) * | 2009-11-06 | 2010-08-25 | 北汽福田汽车股份有限公司 | Pipeline connection structure |
| CN201661263U (en) * | 2010-04-30 | 2010-12-01 | 王寿明 | Thermal production mandrel type bushing head |
| CN103822034A (en) * | 2014-02-27 | 2014-05-28 | 苏氏工业科学技术（北京）有限公司 | Sealing hoop and connecting structure that sealing hoop connects flange plate |
| CN204062274U (en) * | 2014-05-30 | 2014-12-31 | 广州市傲派自动化设备有限公司 | A kind of locking hood type rapid pipe joint of wind-force feed system |
| WO2016091297A1 (en) * | 2014-12-10 | 2016-06-16 | Husqvarna Ab | Connecting element for one or more flexible tubes with improved locking arrangement |
| CN106439283A (en) * | 2016-10-18 | 2017-02-22 | 曾广新 | Connecting pipe system |
| CN206786199U (en) * | 2017-06-01 | 2017-12-22 | 曾广新 | External circular type attachment structure and pipe-line system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170818 |
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| RJ01 | Rejection of invention patent application after publication |