CN112721090A - Production process of flange connection double-wall corrugated pipe - Google Patents
Production process of flange connection double-wall corrugated pipe Download PDFInfo
- Publication number
- CN112721090A CN112721090A CN202011418139.XA CN202011418139A CN112721090A CN 112721090 A CN112721090 A CN 112721090A CN 202011418139 A CN202011418139 A CN 202011418139A CN 112721090 A CN112721090 A CN 112721090A
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- flange
- solid
- wave crest
- corrugated pipe
- double
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention provides a production process of a flange connection double-wall corrugated pipe, which comprises the following steps: (1) adding raw materials into an extruder; (2) when the flange solid wave crest module is formed by extrusion, the forming machine and the extruder start to change the speed, and the flange solid wave crest module is completely filled with raw materials to form the flange solid wave crest; (3) cooling, sizing and cutting at fixed length; (4) flattening the cut edge trimmer; (5) and drilling connecting screw holes on the wave crests of the flange entity after flattening. The flange connection double-wall corrugated pipe can be produced without adopting a flaring module, and the continuous automatic production of the pipe body can be realized only by controlling the speed of an extruder and a forming machine to form a flange entity wave crest.
Description
Technical Field
The invention belongs to the technical field of production of double-wall corrugated pipes, and particularly relates to a production process of a flange-connected double-wall corrugated pipe.
Background
The double-wall corrugated pipe is a novel pipe with an outer wall with an annular structure and a smooth inner wall, and after development and improvement for more than ten years, the double-wall corrugated pipe is developed from a single variety to a complete product series, and the production process and the use technology are mature.
The pipe bodies of the traditional double-wall corrugated pipe are connected by adopting a socket, namely, a pipe production needs a flaring module. And the bell and spigot joint usually uses connection modes such as rubber ring connection, electric melting bell and spigot joint, heat shrinkable sleeve connection, electric melting belt connection and the like, but the connection modes have poor sealing performance and high construction environment requirements, and water is easy to seep out of the joint of the double-wall corrugated pipe during water conveying, so that the bell and spigot joint is not beneficial to use.
Therefore, there is a need to provide a new production process of double-wall corrugated pipe to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides a production process of a flange connection double-wall corrugated pipe, which comprises the following steps of:
(1) adding raw materials into an extruder;
(2) when the flange solid wave crest module is formed by extrusion, the forming machine and the extruder start to change the speed, and the flange solid wave crest module is completely filled with raw materials to form the flange solid wave crest;
(3) cooling, sizing and cutting at fixed length;
(4) flattening the cut edge trimmer;
(5) and drilling connecting screw holes on the wave crests of the flange entity after flattening.
Preferably, the method further comprises the following steps: and cutting and trimming the flange entity wave crests at the two ends of the pipe body to enable the cross sections of the flange entity wave crests at the two ends of the pipe body to be square.
Preferably, the method further comprises the following steps: the flange connecting pipe is produced by adopting an injection molding machine, a flange connecting ring is arranged on the surface of the flange connecting pipe, and a connecting screw hole is arranged in the flange connecting ring.
Preferably, the method further comprises the following steps: processing a solid short peak or a solid gap peak:
(1) processing a solid short wave crest: the wave crest on the surface of the flange-connected double-wall corrugated pipe close to the flange solid wave crests at two ends is also of a solid wall structure, and the wave crest is trimmed by a cutting machine, so that the height of the wave crest is lower than that of a flange connection screw hole;
(2) processing a solid notch peak: the wave crest on the surface of the flange-connected double-wall corrugated pipe close to the solid wave crests of the flanges at the two ends is also of a solid-wall structure, and the wave crest is trimmed by a cutting machine to form a notch.
The invention has the following beneficial effects:
1. the flange connection double-wall corrugated pipe can be produced without adopting a flaring module, and the continuous automatic production of the pipe body can be realized only by controlling the speed of an extruder and a forming machine to form a flange entity wave crest.
2. The flange connection double-wall corrugated pipe produced by the invention has the advantages of simple structure, convenient connection, high pipeline connection strength and good sealing performance.
Drawings
FIG. 1 is a schematic structural view of a flanged double-walled corrugated pipe;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of a structure of a solid short peak;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is a schematic view of a connection made without using a flange connection pipe;
in the figure: 1. a first double-walled bellows body; 2. wave crest; 3. a trough of a wave; 4. a nut; 5. a metal gasket; 6. a solid peak A; 7. a connecting hole A; 8. a flange connecting ring A; 9. a threaded rod A; 10. A flange connecting ring B; 11. a connecting hole B; 12. a solid peak B; 13. a threaded rod B; 14. a solid notched peak; 15. a flange connecting pipe; 16. a seal ring; 17. a second double-walled bellows body; 18. a circular arc-shaped notch; 19. a solid short peak A; 20. the solid short peak B.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
As shown in fig. 1-2, a flange connection double-wall corrugated pipe comprises a first double-wall corrugated pipe body and a second double-wall corrugated pipe body, and further comprises a flange connection pipe, wherein the surfaces of the first double-wall corrugated pipe body and the second double-wall corrugated pipe body are sequentially provided with integrally formed wave crests (the wave crests are generally hollow wave crests) from left to right, wave troughs are formed between the wave crests, the first double-wall corrugated pipe body is provided with a solid wave crest a near the second double-wall corrugated pipe body, the second double-wall corrugated pipe body is provided with a solid wave crest B near the first double-wall corrugated pipe body, the flange connection pipe is provided with a flange connection ring a and a flange connection ring B, the solid wave crest a and the flange connection ring a are respectively provided with a plurality of pairs of connection holes a along the axial direction, and a plurality of pairs of connection holes B are respectively arranged, the number of the threaded rods A is equal to the number of pairs of the connecting holes A, and the number of the threaded rods B is equal to the number of pairs of the connecting holes B. The threaded rod A sequentially penetrates through the solid wave crest A and each pair of connecting holes A in the flange connecting ring A, the two ends of the threaded rod A are screwed by nuts to be fixedly connected with the first double-wall corrugated pipe body and the flange connecting pipe, the threaded rod B sequentially penetrates through the solid wave crest B and each pair of connecting holes B in the flange connecting ring B, and the two ends of the threaded rod B are screwed by nuts to be fixedly connected with the second double-wall corrugated pipe body and the flange connecting pipe. The flange joint pipe includes linkage segment A and linkage segment B, linkage segment A is located first double-walled bellows originally internally, linkage segment B is located the second double-walled bellows originally internally, and first double-walled bellows body and flange joint union coupling department to and flange joint pipe and the second double-walled bellows body junction all are equipped with the sealing washer.
In this embodiment, metal gaskets are further arranged at two ends of the threaded rod a and the threaded rod B. And the cross sections of the solid wave crest A, the solid wave crest B, the flange connecting ring A and the flange connecting ring B are square.
The wave crest of the first double-wall corrugated pipe body close to the solid wave crest A and the wave crest of the second double-wall corrugated pipe body close to the solid wave crest B are both solid notched wave crests, namely, the solid wave crests are provided with arc-shaped notches (also can be trapezoidal notches and triangular notches), and the lowest position of each arc-shaped notch is lower than the lowest position of the nut. The arc-shaped gap is arranged to facilitate the fixed installation of the threaded rod A and the threaded rod B.
During installation, the sealing ring is placed at the joint of the first double-wall corrugated pipe body and the flange connecting pipe, and then the connecting holes A in the entity wave crest A and the flange connecting ring A are aligned. And then, the installer inserts the threaded rod A into the connecting hole A to perform threaded connection, places the metal gasket outside the connecting hole at the moment, and then fixes the metal gasket and the threaded rod A by using a nut, so that the first double-wall corrugated pipe body and the flange connecting pipe are fixed. And fixing the flange connecting pipe and the second double-wall corrugated pipe body according to the same method.
Meanwhile, the wave crest of the first double-wall corrugated pipe body close to the entity wave crest A can be an entity short wave crest A, the wave crest of the second double-wall corrugated pipe body close to the entity wave crest B is also an entity short wave crest B, the height of the entity short wave crest A is lower than the height of the highest position of the threaded rod A, and the height of the entity short wave crest B is lower than the height of the highest position of the threaded rod B. See fig. 3 and 4 in detail.
The production process of the flange connection double-wall corrugated pipe comprises the following steps:
(1) adding raw materials into an extruder;
(2) when the flange solid wave crest module is formed by extrusion, the forming machine and the extruder start to change the speed, and the flange solid wave crest module is completely filled with raw materials to form the flange solid wave crest;
(3) cooling, sizing and cutting at fixed length;
(4) flattening the cut edge trimmer;
(5) drilling connecting screw holes on the wave crests of the flange entity after flattening;
(6) and cutting and trimming the flange entity wave crests at the two ends of the pipe body to enable the cross sections of the flange entity wave crests at the two ends of the pipe body to be square.
(7) The flange connecting pipe is produced by adopting an injection molding machine, a flange connecting ring is arranged on the surface of the flange connecting pipe, and a connecting screw hole is arranged in the flange connecting ring.
(8) Processing a solid short peak or a solid gap peak:
A. processing a solid short wave crest: the wave crest on the surface of the flange-connected double-wall corrugated pipe close to the flange solid wave crests at two ends is also of a solid wall structure, and the wave crest is trimmed by a cutting machine, so that the height of the wave crest is lower than that of a flange connection screw hole;
B. processing a solid notch peak: the wave crest on the surface of the flange-connected double-wall corrugated pipe close to the solid wave crests of the flanges at the two ends is also of a solid-wall structure, and the wave crest is trimmed by a cutting machine to form a notch (the notch can be an arc notch, and can also be a trapezoid notch or a triangle notch).
Or the two flange-connected double-wall corrugated pipes can be directly connected by utilizing the solid wave crests A and B at the two ends of the pipe body without using a flange connecting pipe for connection, and the concrete figure is 5.
The production process of the flange connection double-wall corrugated pipe comprises the following steps:
(1) adding raw materials into an extruder;
(2) when the flange solid wave crest module is formed by extrusion, the forming machine and the extruder start to change the speed, and the flange solid wave crest module is completely filled with raw materials to form the flange solid wave crest;
(3) cooling, sizing and cutting at fixed length;
(4) flattening the cut edge trimmer;
(5) and drilling connecting screw holes on the wave crests of the flange entity after flattening.
(6) Processing a solid short peak or a solid gap peak:
A. processing a solid short wave crest: the wave crest on the surface of the flange-connected double-wall corrugated pipe close to the flange solid wave crests at two ends is also of a solid wall structure, and the wave crest is trimmed by a cutting machine, so that the height of the wave crest is lower than that of a flange connection screw hole;
B. processing a solid notch peak: the wave crest on the surface of the flange-connected double-wall corrugated pipe close to the solid wave crests of the flanges at the two ends is also of a solid-wall structure, and the wave crest is trimmed by a cutting machine to form a notch (the notch can be an arc notch, and can also be a trapezoid notch or a triangle notch).
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all simple and equivalent substitutions made by using the contents of the specification and the drawings, or direct or indirect applications in other related technical fields, are included in the scope of the present invention.
Claims (4)
1. A production process of a flange connection double-wall corrugated pipe is characterized by comprising the following steps: the method comprises the following steps:
(1) adding raw materials into an extruder;
(2) when the flange solid wave crest module is formed by extrusion, the forming machine and the extruder start to change the speed, and the flange solid wave crest module is completely filled with raw materials to form the flange solid wave crest;
(3) cooling, sizing and cutting at fixed length;
(4) flattening the cut edge trimmer;
(5) and drilling connecting screw holes on the wave crests of the flange entity after flattening.
2. A process for producing a flanged double-walled corrugated pipe according to claim 1, wherein: further comprising the steps of: and cutting and trimming the flange entity wave crests at the two ends of the pipe body to enable the cross sections of the flange entity wave crests at the two ends of the pipe body to be square.
3. A process for producing a flanged double-walled corrugated pipe according to claim 1, wherein: further comprising the steps of: the flange connecting pipe is produced by adopting an injection molding machine, a flange connecting ring is arranged on the surface of the flange connecting pipe, and a connecting screw hole is arranged in the flange connecting ring.
4. A process for producing a flanged double-walled corrugated pipe according to claim 1, wherein: further comprising the steps of: processing a solid short peak or a solid gap peak:
(1) processing a solid short wave crest: the wave crest on the surface of the flange-connected double-wall corrugated pipe close to the flange solid wave crests at two ends is also of a solid wall structure, and the wave crest is trimmed by a cutting machine, so that the height of the wave crest is lower than that of a flange connection screw hole;
(2) processing a solid notch peak: the wave crest on the surface of the flange-connected double-wall corrugated pipe close to the solid wave crests of the flanges at the two ends is also of a solid-wall structure, and the wave crest is trimmed by a cutting machine to form a notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418139.XA CN112721090B (en) | 2020-12-07 | 2020-12-07 | Production process of flange connection double-wall corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418139.XA CN112721090B (en) | 2020-12-07 | 2020-12-07 | Production process of flange connection double-wall corrugated pipe |
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| Publication Number | Publication Date |
|---|---|
| CN112721090A true CN112721090A (en) | 2021-04-30 |
| CN112721090B CN112721090B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011418139.XA Active CN112721090B (en) | 2020-12-07 | 2020-12-07 | Production process of flange connection double-wall corrugated pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113459549A (en) * | 2021-06-28 | 2021-10-01 | 康命源(京山)新材料科技发展有限公司 | Production process of semi-ring loop connection double-wall corrugated pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691897A (en) * | 2009-08-18 | 2010-04-07 | 谢志树 | Injection plastic double-wall corrugated pipe and manufacturing method thereof |
| KR20110059314A (en) * | 2009-11-27 | 2011-06-02 | 안정복 | A flange type plastic corrugated pipe |
| CN102278342A (en) * | 2011-06-28 | 2011-12-14 | 北京航空航天大学 | Method for bonding carbon fiber pipe with metal flanges internally and externally |
| CN211118211U (en) * | 2019-11-18 | 2020-07-28 | 安徽万方管业集团有限公司 | Connecting joint of HDPE double-wall corrugated pipe |
-
2020
- 2020-12-07 CN CN202011418139.XA patent/CN112721090B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691897A (en) * | 2009-08-18 | 2010-04-07 | 谢志树 | Injection plastic double-wall corrugated pipe and manufacturing method thereof |
| KR20110059314A (en) * | 2009-11-27 | 2011-06-02 | 안정복 | A flange type plastic corrugated pipe |
| CN102278342A (en) * | 2011-06-28 | 2011-12-14 | 北京航空航天大学 | Method for bonding carbon fiber pipe with metal flanges internally and externally |
| CN211118211U (en) * | 2019-11-18 | 2020-07-28 | 安徽万方管业集团有限公司 | Connecting joint of HDPE double-wall corrugated pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113459549A (en) * | 2021-06-28 | 2021-10-01 | 康命源(京山)新材料科技发展有限公司 | Production process of semi-ring loop connection double-wall corrugated pipe |
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| Publication number | Publication date |
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| CN112721090B (en) | 2023-09-29 |
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