CN110043738A - High pressure elbow pipe fitting - Google Patents
High pressure elbow pipe fitting Download PDFInfo
- Publication number
- CN110043738A CN110043738A CN201910418532.XA CN201910418532A CN110043738A CN 110043738 A CN110043738 A CN 110043738A CN 201910418532 A CN201910418532 A CN 201910418532A CN 110043738 A CN110043738 A CN 110043738A
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- China
- Prior art keywords
- vertical bar
- bend pipe
- high pressure
- elbow
- wall
- 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
- 210000003205 muscle Anatomy 0.000 claims abstract description 29
- 230000003139 buffering effect Effects 0.000 claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000002346 layers by function Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003116 impacting effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 45
- 239000004568 cement Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 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
- F16L43/00—Bends; Siphons
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The present invention provides a kind of high pressure elbow pipe fittings, belong to bend pipe tools technical field, including elbow body, buffering muscle and push plate；Elbow body side is interior bend pipe wall, and the other side is excurvation tube wall；Buffering muscle one end is connected on the excurvation tube wall of elbow body；Push plate is connect with the other end of buffering muscle.High pressure elbow pipe fitting provided by the invention, it can not only prevent elbow body from being deformed or being detached from for a long time pipeline by impacting with high pressure, but also it is avoided that the functional layer on elbow body inner wall is destroyed, improve the service life of elbow body, the replacement frequency for reducing elbow body has ensured the use and conveying effect of pipeline.
Description
Technical field
The invention belongs to bend pipe tools technical fields, are to be related to a kind of high pressure elbow pipe fitting more specifically.
Background technique
Currently, since pipeline designs or construction need, often requiring to use bend pipe tools in pipe-laying process to change
Become the laying direction of pipeline.When pipeline is in conveying high-pressure medium, biggish impact force will receive at bend pipe tools, in order to prevent
Bend pipe tools are detached from pipeline under the influence of the impact force, according to pipeline bore and manage interior compression situation, can be at bend pipe tools back
Cement buttress of different sizes is set to offset impact force.However it is both provided with functional layer, such as insulating layer in general pipeline, curved
Cement buttress is arranged to offset hydraulic thrust in head tube part back, and the functional layer that will lead in bend pipe tools is impaired, and then influences pipeline
Conveying effect.
Summary of the invention
The purpose of the present invention is to provide a kind of high pressure elbow pipe fittings, it is intended to which high pressure Jie is offset in solution using cement buttress
The impact force of confrontation bend pipe tools, the functional layer easily led in bend pipe tools is impaired, makes bend pipe tools reduced service life, influences
The technical issues of pipeline conveying effect.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of high pressure elbow pipe fitting, including bend pipe sheet are provided
Body, buffering muscle and push plate；Elbow body side is interior bend pipe wall, and the other side is excurvation tube wall；Buffering muscle one end is connected to institute
It states on the excurvation tube wall of elbow body；Push plate is connect with the other end of the buffering muscle.
Further, the buffering muscle includes: the first vertical bar, is radially arranged in the outer bend pipe along the elbow body
The highest point of wall has the cambered surface for cooperating with the excurvation tube wall and the plane for connecting with the push plate, described
The tangent line of the highest point of excurvation tube wall is vertical with first vertical bar；The push plate is vertical with first vertical bar to be connect.
Further, the buffering muscle further includes the second vertical bar and third vertical bar；The setting of second vertical bar is perpendicular described first
The left side of muscle and parallel with first vertical bar, one end is connected on the excurvation tube wall of the elbow body, the other end with it is described
Push plate is vertical；The right side of first vertical bar and parallel with first vertical bar is arranged in third vertical bar, and one end is connected to institute
It states on the excurvation tube wall of elbow body, the other end is vertical with the push plate.
Further, the spacing of second vertical bar and first vertical bar and the third vertical bar and first vertical bar
Spacing it is equal.
Further, reinforcing rib is additionally provided between first vertical bar, second vertical bar and the third vertical bar.
Further, the buffering muscle further includes the first diagonal bar and the second diagonal bar；First diagonal bar is along the elbow body
It is radially arranged in the left side of first vertical bar；Be radially arranged in first vertical bar of second diagonal bar along the elbow body
Right side.
Further, first diagonal bar and the angle of first vertical bar and second diagonal bar and first vertical bar
Angle it is equal.
Further, reinforcing rib is additionally provided between first vertical bar, first diagonal bar and second diagonal bar.
Further, the elbow body includes bend pipe outer layer, bend pipe internal layer, several dowels and filled layer；Bend pipe
Internal layer is arranged in the inside of the bend pipe outer layer, and along the inner wall of the bend pipe outer layer and the bend pipe outer layer have it is uniform between
Gap；Several dowel both ends are connect with the outer wall of the inner wall of the bend pipe outer layer and the bend pipe internal layer respectively, and along described
The circumferential direction of bend pipe outer layer is uniformly arranged and length direction axially extends；Filled layer is arranged in the bend pipe outer layer and the bend pipe
In the gap of internal layer.
Further, the elbow body further include: several deflectors are distributed in the excurvation of the bend pipe internal layer
On inner wall, and it is arranged with the excurvation inner wall of the bend pipe internal layer in angle.
The beneficial effect of high pressure elbow pipe fitting provided by the invention is: compared with prior art, high pressure elbow of the present invention
Push plate is fixed on cement buttress by pipe fitting after elbow body is installed.In high-pressure medium such as high pressure water, high pressure water
Steam or concrete, when by bend pipe tools, bend pipe tools will receive the biggish impact of high-pressure medium, and high impact forces are through slow
Floating screed is transmitted in push plate, then is offset by cement buttress, can not only prevent elbow body from being become for a long time by impacting with high pressure
Shape is detached from pipeline, but also is avoided that the functional layer on elbow body inner wall is destroyed, and improve elbow body uses the longevity
Life, reduces the replacement frequency of elbow body, has ensured the use and conveying effect of pipeline.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram one of high pressure elbow pipe fitting provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram two of high pressure elbow pipe fitting provided in an embodiment of the present invention；
Fig. 3 is the longitudinal sectional view of Fig. 1；
Fig. 4 is the usage state diagram of high pressure elbow pipe fitting provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram for the high pressure elbow pipe fitting that another embodiment of the present invention provides；
Fig. 6 is the structural schematic diagram one of elbow body provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram two of elbow body provided in an embodiment of the present invention；
Fig. 8 is cross-sectional view of the Fig. 6 along the direction A-A.
In figure: 1, elbow body；11, interior bend pipe wall；12, excurvation tube wall；13, bend pipe outer layer；14, bend pipe internal layer；15, it fills out
Fill layer；16, dowel；17, deflector；2, muscle is buffered；21, the first vertical bar；202, the second vertical bar；203, third vertical bar；212,
First diagonal bar；213, the second diagonal bar；3, reinforcing rib；4, push plate；5, cement buttress.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Also referring to Fig. 1 to Fig. 4, now high pressure elbow pipe fitting provided by the invention is illustrated.The high pressure elbow
Pipe fitting, including elbow body 1, buffering muscle 2 and push plate 4；1 side of elbow body is interior bend pipe wall 11, and the other side is outer bend pipe
Wall 12；Buffering 2 one end of muscle is connected on the excurvation tube wall 12 of the elbow body 1；Push plate 4 is another with the buffering muscle 2
End connection.
The beneficial effect of high pressure elbow pipe fitting provided by the invention is: compared with prior art, high pressure elbow of the present invention
Push plate 4 is fixed on cement buttress 5 by pipe fitting after elbow body 1 is installed.In high-pressure medium such as high pressure water, high pressure
Vapor or concrete, when by bend pipe tools, bend pipe tools will receive the biggish impact of high-pressure medium, high impact forces warp
Buffering muscle 2 is transmitted in push plate 4, then is offset by cement buttress 5, can not only prevent elbow body 1 from being rushed for a long time by high pressure
It hits and deforms or be detached from pipeline, but also be avoided that the functional layer on 1 inner wall of elbow body is destroyed, improve elbow body 1
Service life, reduce the replacement frequency of elbow body 1, ensured the use and conveying effect of pipeline.
As a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention, please refer to Fig.1 to Fig.3, due to curved
Tube body 1 is maximum in the impact force that centre is subject to, and in order to alleviate impact force suffered by inner wall at 1 center of elbow body, keeps away
Exempt from the functional layer at this to be destroyed.The buffering muscle 2 includes: the first vertical bar 21, is radially arranged in institute along the elbow body 1
The highest point of excurvation tube wall 12 is stated, there is the cambered surface for cooperating with the excurvation tube wall 12 and for connecting with the push plate 4
The plane connect, the tangent line of the highest point of the excurvation tube wall 12 are vertical with first vertical bar 21；The push plate 4 and described the
The one vertically connection of vertical bar 21.
As a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention, referring to FIG. 1 to FIG. 4, in order to
The two sides of elbow body 1 increase buffering and supporting role.The buffering muscle 2 further includes the second vertical bar 202 and third vertical bar 203；
The left side of first vertical bar 21 and parallel with first vertical bar 21 is arranged in second vertical bar 202, and one end is connected to described curved
On the excurvation tube wall 12 of tube body 1, the other end is vertical with the push plate 4；Third vertical bar 203 is arranged in first vertical bar 21
Right side and parallel with first vertical bar 21, one end is connected on the excurvation tube wall 12 of the elbow body 1, the other end and institute
It is vertical to state push plate 4.
It is curved in order to make refering to fig. 1 to Fig. 4 as a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention
The two sides stress balance of tube body 1, avoids unbalance stress and deforms.Between second vertical bar 202 and first vertical bar 21
Away from equal with the spacing of the third vertical bar 203 and first vertical bar 21.
As a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention, referring to FIG. 1 to FIG. 4, in order to increase
Add the support strength of the first vertical bar 21, the second vertical bar 202 and third vertical bar 203.First vertical bar 21, second vertical bar
Reinforcing rib 3 is additionally provided between 202 and the third vertical bar 203.
As a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention, refering to Fig. 5, the buffering muscle 2 is also
Including the first diagonal bar 212 and the second diagonal bar 213；First diagonal bar 212 along the elbow body 1 to be radially arranged in described first perpendicular
The left side of muscle 21；Second diagonal bar 213 is along the right side for being radially arranged in first vertical bar 21 of the elbow body 1.Due to
The radial direction of elbow body 1 is arranged in one diagonal bar 212 and the second diagonal bar 213, so the first diagonal bar 212 and the second diagonal bar 213 are to curved
The support of tube body 1 is more stable, and effect is more preferable.
In the present embodiment, first diagonal bar 212 and the angle of first vertical bar 21 are acute angle；Second diagonal bar
213 and the angle of first vertical bar 21 are acute angle.
As a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention, refering to Fig. 5, in order to make elbow body
1 two sides stress balance, avoids unbalance stress and deforms.The angle and institute of first diagonal bar 212 and first vertical bar 21
It is equal with the angle of first vertical bar 21 to state the second diagonal bar 213.
It is perpendicular in order to increase by first refering to Fig. 5 as a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention
The support strength of muscle 21, the first diagonal bar 212 and the second diagonal bar 213.First vertical bar 21, first diagonal bar 212 and
Reinforcing rib 3 is additionally provided between second diagonal bar 213.
As a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention, refering to Fig. 3, the buffering muscle 2, institute
It states elbow body 1 and the push plate 4 is integrally formed.It, will buffering muscle 2, curved since the structure of one keeps its stability more preferable
Tube body 1 and the setting of push plate 4 are integrated.
As a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention, in order to enhance the buffering of buffering muscle 2
Effect cuts down damage of the impact force to 1 inner wall of elbow body, the buffering muscle 2 and the elbow body 1 and with it is described
The junction of push plate 4 is provided with cushion.
As a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention, Fig. 6 to Fig. 8 is please referred to, it is described curved
Tube body includes bend pipe outer layer 13, bend pipe internal layer 14, several dowels 16 and filled layer 15；Bend pipe internal layer 14 is arranged described
The inside of bend pipe outer layer 13, and there is uniform gap along the inner wall of the bend pipe outer layer 13 and the bend pipe outer layer 13；It is several
A dowel 16, both ends are connect with the outer wall of the inner wall of the bend pipe outer layer 13 and the bend pipe internal layer 14 respectively, and along described
The circumferential direction of bend pipe outer layer 13 is uniformly arranged and length direction axially extends；Filled layer 15 is arranged in the bend pipe outer layer 13 and institute
In the gap for stating bend pipe internal layer 14.Due to being provided with filled layer 15 in bend pipe outer layer 13 and bend pipe internal layer 14, can effectively weaken
Pumped (conveying) medium avoids the functional layer of bend pipe internal layer 14 impaired the impact force of bend pipe internal layer 14；Due in bend pipe outer layer 13 and curved
Inner tube layer 14 is provided directly with dowel 16, enhances the compression strength of bend pipe internal layer 14.
In the present embodiment, refering to Fig. 8, dowel 16 can be snakelike, S type, further increase the anti-of bend pipe internal layer 14
Impact capacity.
In the present embodiment, the filled layer 15 be thermal insulation material, sound-absorbing material, compression-resistant material or other.
As a kind of specific embodiment of high pressure elbow pipe fitting provided by the invention, Fig. 6 to Fig. 8 is please referred to, it is described curved
Tube body further include: several deflectors 17 are distributed on the excurvation inner wall of the bend pipe internal layer 14, and with the bend pipe
The excurvation inner wall of internal layer 14 is arranged in angle.Specifically, it is divided into left and right side using the highest point of elbow body as boundary, if
A dry deflector 17 is arranged at left side or right side, and when deflector 17 is arranged at right side, installation elbow body ensures defeated
The medium sent is entered by right side nozzle, and deflector 17 is to be obliquely installed with bend pipe internal layer 14, the inclined direction and pumped (conveying) medium
The angle of flow direction be acute angle, and corner dimension is equal.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. high pressure elbow pipe fitting characterized by comprising
Elbow body, side are interior bend pipe wall, and the other side is excurvation tube wall；
Muscle is buffered, one end is connected on the excurvation tube wall of the elbow body；With
Push plate is connect with the other end of the buffering muscle.
2. high pressure elbow pipe fitting as described in claim 1, which is characterized in that the buffering muscle includes:
First vertical bar, along the highest point for being radially arranged in the excurvation tube wall of the elbow body, have for it is described outer
The cambered surface and plane for being connect with the push plate of bend pipe wall cooperation, the tangent line of the highest point of the excurvation tube wall with it is described
First vertical bar is vertical；
The push plate is vertical with first vertical bar to be connect.
3. high pressure elbow pipe fitting as claimed in claim 2, which is characterized in that the buffering muscle further include:
The left side of first vertical bar and parallel with first vertical bar is arranged in second vertical bar, and one end is connected to the bend pipe
On the excurvation tube wall of ontology, the other end is vertical with the push plate；With
The right side of first vertical bar and parallel with first vertical bar is arranged in third vertical bar, and one end is connected to the bend pipe
On the excurvation tube wall of ontology, the other end is vertical with the push plate.
4. high pressure elbow pipe fitting as claimed in claim 3, which is characterized in that between second vertical bar and first vertical bar
Away from equal with the spacing of the third vertical bar and first vertical bar.
5. high pressure elbow pipe fitting as claimed in claim 3, which is characterized in that first vertical bar, second vertical bar and
Reinforcing rib is additionally provided between the third vertical bar.
6. high pressure elbow pipe fitting as claimed in claim 2, which is characterized in that the buffering muscle further include:
First diagonal bar, along the left side for being radially arranged in first vertical bar of the elbow body；With
Second diagonal bar, along the right side for being radially arranged in first vertical bar of the elbow body.
7. high pressure elbow pipe fitting as claimed in claim 6, which is characterized in that the folder of first diagonal bar and first vertical bar
Angle is equal with the angle of second diagonal bar and first vertical bar.
8. high pressure elbow pipe fitting as claimed in claim 6, which is characterized in that first vertical bar, first diagonal bar and
Reinforcing rib is additionally provided between second diagonal bar.
9. the high pressure elbow pipe fitting as described in claim 1-8 any one, which is characterized in that the elbow body includes:
Bend pipe outer layer；
Bend pipe internal layer is arranged in the inside of the bend pipe outer layer, and has along the inner wall of the bend pipe outer layer and the bend pipe outer layer
There is uniform gap；
Several dowels, both ends are connect with the outer wall of the inner wall of the bend pipe outer layer and the bend pipe internal layer respectively, and along institute
The circumferential direction for stating bend pipe outer layer is uniformly arranged and length direction axially extends；With
Filled layer is arranged in the gap of the bend pipe outer layer and the bend pipe internal layer.
10. the high pressure elbow pipe fitting as described in claim 9 any one, which is characterized in that the elbow body further include:
Several deflectors are distributed on the excurvation inner wall of the bend pipe internal layer, and in the excurvation of the bend pipe internal layer
Wall is arranged in angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418532.XA CN110043738A (en) | 2019-05-20 | 2019-05-20 | High pressure elbow pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418532.XA CN110043738A (en) | 2019-05-20 | 2019-05-20 | High pressure elbow pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110043738A true CN110043738A (en) | 2019-07-23 |
Family
ID=67282809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910418532.XA Pending CN110043738A (en) | 2019-05-20 | 2019-05-20 | High pressure elbow pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110043738A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202691413U (en) * | 2012-07-18 | 2013-01-23 | 中国十七冶集团有限公司 | Buffer device of 90-degree elbow pipe of concrete delivery pipe |
| CN203770916U (en) * | 2013-12-31 | 2014-08-13 | 杭州鸿雁管道系统科技有限公司 | Anti-impact and large-span elbow |
| CN204176219U (en) * | 2014-08-11 | 2015-02-25 | 张虞旭驹 | 90 ° of elbows |
| CN205606061U (en) * | 2016-03-25 | 2016-09-28 | 安徽禹王铸业有限公司 | Wear -resisting engineering elbow |
| CN206496123U (en) * | 2017-02-27 | 2017-09-15 | 青岛法尔塑胶管业有限公司 | A kind of PP R45 ° elbows with pooling feature |
| US20170314724A1 (en) * | 2015-08-08 | 2017-11-02 | Zhaohui Zhou | Auto-fill two-layer two-half wear resistant elbow of concrete pump truck and manufacturing method thereof |
| CN208138676U (en) * | 2018-05-13 | 2018-11-23 | 英立（江苏）机电有限公司 | A kind of shockproof pvc pipe |
| CN210219014U (en) * | 2019-05-20 | 2020-03-31 | 新兴铸管股份有限公司 | High-pressure elbow pipe fitting |
-
2019
- 2019-05-20 CN CN201910418532.XA patent/CN110043738A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202691413U (en) * | 2012-07-18 | 2013-01-23 | 中国十七冶集团有限公司 | Buffer device of 90-degree elbow pipe of concrete delivery pipe |
| CN203770916U (en) * | 2013-12-31 | 2014-08-13 | 杭州鸿雁管道系统科技有限公司 | Anti-impact and large-span elbow |
| CN204176219U (en) * | 2014-08-11 | 2015-02-25 | 张虞旭驹 | 90 ° of elbows |
| US20170314724A1 (en) * | 2015-08-08 | 2017-11-02 | Zhaohui Zhou | Auto-fill two-layer two-half wear resistant elbow of concrete pump truck and manufacturing method thereof |
| CN205606061U (en) * | 2016-03-25 | 2016-09-28 | 安徽禹王铸业有限公司 | Wear -resisting engineering elbow |
| CN206496123U (en) * | 2017-02-27 | 2017-09-15 | 青岛法尔塑胶管业有限公司 | A kind of PP R45 ° elbows with pooling feature |
| CN208138676U (en) * | 2018-05-13 | 2018-11-23 | 英立（江苏）机电有限公司 | A kind of shockproof pvc pipe |
| CN210219014U (en) * | 2019-05-20 | 2020-03-31 | 新兴铸管股份有限公司 | High-pressure elbow pipe fitting |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20240913 |
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