CN112984258A - Electric hot melting pipe fitting and manufacturing process - Google Patents
Electric hot melting pipe fitting and manufacturing process Download PDFInfo
- Publication number
- CN112984258A CN112984258A CN202110455385.0A CN202110455385A CN112984258A CN 112984258 A CN112984258 A CN 112984258A CN 202110455385 A CN202110455385 A CN 202110455385A CN 112984258 A CN112984258 A CN 112984258A
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- CN
- China
- Prior art keywords
- pipe
- layer
- polyethylene
- pipe fitting
- steel
- 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
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- 238000002844 melting Methods 0.000 title claims abstract description 35
- 230000008018 melting Effects 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000004698 Polyethylene Substances 0.000 claims abstract description 89
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- -1 polyethylene Polymers 0.000 claims abstract description 35
- 229920000573 polyethylene Polymers 0.000 claims abstract description 35
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 238000004513 sizing Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims abstract 2
- 239000010410 layer Substances 0.000 claims description 70
- 239000012943 hotmelt Substances 0.000 claims description 12
- 239000004831 Hot glue Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 7
- 239000011265 semifinished product Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
- F16L47/03—Welded joints with an electrical resistance incorporated in the joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
- B29D23/003—Pipe joints, e.g. straight joints
- B29D23/005—Pipe joints, e.g. straight joints provided with electrical wiring
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- 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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
本发明公开了一种电热熔管件及制作工艺，管坯包括内层PE管、外包钢件、聚乙烯外层和电阻丝，其中外包钢件包裹在内层PE管外，聚乙烯外层包裹在外包钢件外，电阻丝设置在内层PE管内壁上；制作步骤：步骤一，挤出内层PE管，经过第一真空定径成型机组进行处理并冷却；步骤二：将内层PE管材外包裹外包钢件，然后聚乙烯外层挤出机挤出聚乙烯外层；经过第二真空定径成型机组进行处理并冷却；步骤三：在管坯半成品内壁布设电阻丝，制成电热熔管件，最后包装入库；本发明在管件的管坯中层设置外包钢件，用来加强管件承压能力，解决目前市场上钢丝网骨架增强聚乙烯复合管、高压管材连接管件施工连接中出现的管件稳定性下降的管件问题。
The invention discloses an electrothermal melting pipe fitting and a manufacturing process. The pipe blank comprises an inner PE pipe, an outer steel piece, a polyethylene outer layer and a resistance wire, wherein the outer steel piece is wrapped around the inner PE pipe, and the polyethylene outer layer is wrapped around the inner PE pipe. The outer layer is wrapped in the outer steel part, and the resistance wire is arranged on the inner wall of the inner layer PE pipe; production steps: step 1, extrude the inner layer PE pipe, process and cool it through the first vacuum sizing forming unit; step 2: put the inner layer The outer layer of PE pipe is wrapped with outer steel parts, and then the outer layer of polyethylene is extruded by the outer layer of polyethylene extruder; it is processed and cooled by the second vacuum sizing forming unit; Electrothermal melting pipe fittings are made, and finally packaged and put into storage; in the present invention, an outer steel fitting is arranged in the middle layer of the tube blank of the pipe fitting to strengthen the pressure bearing capacity of the pipe fitting, and solve the problem that the steel mesh skeleton reinforced polyethylene composite pipe and the high-pressure pipe material connecting pipe fittings are currently on the market. The pipe fitting problem that the stability of the pipe fitting is reduced in the construction connection.
Description
Technical Field
The invention relates to the technical field of electric hot-melting pipe fittings, in particular to an electric hot-melting pipe fitting and a manufacturing process thereof.
Background
The electric melting pipe fitting is a connecting pipe fitting which is connected with a connected piece by melting the connected piece through the temperature generated by current. At present, the material of a common electric hot-melt pipe fitting is plastic, and the electric hot-melt pipe fitting connects plastic pipelines to form a long pipeline.
The connection pipe fitting of the steel wire mesh framework reinforced polyethylene composite pipe in the current market is a common electric hot melting pipe fitting, and has the following problems:
1. the electric hot melting pipe fitting needs to be heated and hot melted when the pipe is connected, the strength of the pipe fitting is influenced after hot melting, the quality and the pressure bearing capacity of the pipe fitting are reduced, and the pipe fitting becomes a weak point of a pipeline system.
2. The common electric hot-melt pipe fitting has limited pressure-bearing capacity, the maximum pressure-bearing capacity is 1.6Mpa, and the electric hot-melt pipe fitting has defects in the application field of high-pressure steel wire mesh framework reinforced polyethylene composite pipes.
Therefore, how to provide an electrothermal welding pipe fitting with high pressure-bearing capacity and a manufacturing process thereof are problems to be solved urgently by the technical personnel in the field.
Disclosure of Invention
Accordingly, the present invention is directed to an electrothermal welding tube and a manufacturing process thereof, which at least solve one of the problems set forth in the background art.
In order to realize the scheme, the invention adopts the following technical scheme:
an electric hot-melting pipe fitting comprises an inner layer PE pipe, an outer steel wrapping piece, a polyethylene outer layer and a resistance wire, wherein the outer steel wrapping piece wraps the inner layer PE pipe, the polyethylene outer layer wraps the outer steel wrapping piece, and the resistance wire is arranged on the inner wall of the inner layer PE pipe.
Preferably, in the above one of the electrofusion pipe fittings, the steel-clad member is hollow cylindrical.
Preferably, in the above electric hot-melting pipe, the steel-clad member is uniformly provided with chamfers.
Preferably, in the above electric hot-melt pipe, a glue layer is disposed between the steel-clad member and the polyethylene outer layer.
Preferably, in the above electric hot-melt pipe, the adhesive layer is a hot-melt adhesive layer.
Preferably, in the above electrothermal welding pipe fitting, the resistance wires are provided in a plurality, and each resistance wire is arranged on the inner wall of the inner PE pipe in a ring belt shape.
Preferably, in the above electric hot-melt pipe, the inner wall of the steel-clad part is closely attached to the outer wall of the inner PE pipe.
A manufacturing process of an electric hot melting pipe fitting comprises the following steps:
feeding a PE raw material into an inner layer PE pipe extruder, extruding an inner layer PE pipe into an inner layer PE pipe mould, processing by a first vacuum sizing forming unit, cooling, and cutting into inner layer PE pipes with fixed length by traction;
step two: wrapping the outer steel wrapping part outside the inner PE pipe prepared in the step one, then placing the inner PE pipe wrapping the outer steel wrapping part in a composite co-extrusion vacuum mold, feeding a PE raw material into a polyethylene outer layer extruder, extruding the polyethylene outer layer into the composite co-extrusion vacuum mold, and forming a polyethylene outer layer on the outer wall of the outer steel wrapping part; then the tube blank is processed by a second vacuum sizing forming unit, and after cooling, the tube blank is cut into a tube blank semi-finished product with a fixed length by traction;
step three: and (5) laying resistance wires on the inner wall of the tube blank semi-finished product in the step two, manufacturing an electric hot-melting tube, and finally packaging and warehousing.
Preferably, in the above manufacturing process of the electric hot-melt pipe fitting, in the second step, when the outer steel member is wrapped outside the inner PE pipe, the inner PE pipe and the outer steel member are in clearance fit in the earlier stage, and then the outer steel member is subjected to diameter reduction treatment, so that the inner wall of the outer steel member is tightly attached to the outer wall of the inner PE pipe.
Preferably, in the above manufacturing process of the electric hot melt pipe, in the second step, when the outer polyethylene layer is extruded by the outer polyethylene layer extruder, the hot melt adhesive is extruded by the hot melt adhesive extruder, and a hot melt adhesive layer is formed between the outer steel wrapping member and the outer polyethylene layer.
When the electric melting pipe fitting is used for connecting a pipe, a connecting section is arranged at the connecting end of the pipe, the connecting section of the pipe is inserted into a welding area where resistance wires are arranged on the electric melting pipe fitting, and then the resistance wires are electrified to carry out hot melting connection on the pipe and the pipe fitting.
According to the technical scheme, compared with the prior art, the invention discloses the electric hot-melting pipe fitting and the manufacturing process, the outer steel wrapping part is arranged on the middle layer of the pipe blank of the pipe fitting and used for enhancing the pressure bearing capacity of the pipe fitting, and the problem that the stability of the pipe fitting is reduced in the construction and connection process of the steel wire mesh framework reinforced polyethylene composite pipe and the high-pressure pipe connecting pipe fitting in the current market is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a cross-sectional view of an electrothermal welding tube according to the present invention;
FIG. 2 is an enlarged view of a portion of an electric hot-melt pipe according to the present invention;
FIG. 3 is a flow chart of an electrothermal welding pipe manufacturing process;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses an electrothermal fusion pipe fitting which comprises an inner layer PE pipe 1, an outer coating steel part 2, a polyethylene outer layer 3 and a resistance wire 4, wherein the outer coating steel part 2 is coated outside the inner layer PE pipe 1, the polyethylene outer layer 3 is coated outside the outer coating steel part 2, and the resistance wire 4 is arranged on the inner wall of the inner layer PE pipe 1.
In order to further optimize the technical scheme, the steel cladding member 2 is in a hollow cylindrical shape.
In order to further optimize the technical scheme, chamfers are uniformly arranged on the steel wrapping part 2.
In order to further optimize the technical scheme, a glue layer 5 is arranged between the steel wrapping part 2 and the polyethylene outer layer 3.
In order to further optimize the above technical solution, the glue layer 5 is a hot melt glue layer.
In order to further optimize the technical scheme, the resistance wires 4 are arranged in a plurality of numbers, and each resistance wire 4 is arranged on the inner wall of the inner layer PE pipe 1 in an annular belt shape.
In order to further optimize the technical scheme, the inner wall of the steel-coated part 2 is tightly attached to the outer wall of the inner PE pipe 1.
A manufacturing process of an electric hot melting pipe fitting comprises the following steps:
feeding a PE raw material into an inner layer PE pipe extruder 6, extruding an inner layer PE pipe into an inner layer PE pipe mould 7, processing by a first vacuum sizing forming unit 8, cooling, and cutting into inner layer PE pipes 1 with fixed length by traction;
step two: wrapping the outer-wrapping steel member 2 outside the inner-layer PE pipe 1 prepared in the step one through a pipe-turning frame 9, then placing the inner-layer PE pipe 1 wrapping the outer-wrapping steel member 2 in a composite co-extrusion vacuum mold 10, feeding PE raw materials into a polyethylene outer-layer extruder 11, extruding a polyethylene outer layer 3 into the composite co-extrusion vacuum mold 10, and forming the polyethylene outer layer 3 on the outer wall of the outer-wrapping steel member 2; then the tube blank is processed by a second vacuum sizing forming unit 19, and after cooling, the tube blank is cut into a tube blank semi-finished product 12 with a fixed length by traction;
step three: and (5) laying resistance wires 4 on the inner wall of the tube blank semi-finished product in the step two, manufacturing an electric hot-melting tube, and finally packaging and warehousing.
In order to further optimize the technical scheme, in the second step, when the outer steel wrapping part 2 is wrapped outside the inner layer PE pipe 1, the inner layer PE pipe 1 and the outer steel wrapping part 2 are in clearance fit in the early stage, and then the outer steel wrapping part 2 is subjected to diameter reduction treatment, so that the inner wall of the outer steel wrapping part 2 is tightly attached to the outer wall of the inner layer PE pipe 1.
In order to further optimize the technical scheme, in the second step, when the outer polyethylene layer 3 is extruded by the outer polyethylene layer extruder 11, hot melt adhesive is extruded by the hot melt adhesive extruder 13, and the hot melt adhesive layer 5 is formed between the outer package steel part 2 and the outer polyethylene layer 3.
When the electric melting pipe fitting is used for connecting a pipe, a connecting section 15 is arranged at the connecting end of the pipe 14, the connecting section 15 of the pipe 14 is inserted into a welding area of a resistance wire 4 arranged on the electric melting pipe fitting, then the resistance wire 4 is electrified, and the pipe 14 and the pipe 16 are connected in a hot melting mode.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110455385.0A CN112984258A (en) | 2021-04-26 | 2021-04-26 | Electric hot melting pipe fitting and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110455385.0A CN112984258A (en) | 2021-04-26 | 2021-04-26 | Electric hot melting pipe fitting and manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112984258A true CN112984258A (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110455385.0A Pending CN112984258A (en) | 2021-04-26 | 2021-04-26 | Electric hot melting pipe fitting and manufacturing process |
Country Status (1)
| Country | Link |
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| CN (1) | CN112984258A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580588A (en) * | 2021-08-10 | 2021-11-02 | 安徽杰蓝特新材料有限公司 | Processing technology of extrusion type RTP composite pressure pipe fitting |
| CN114526382A (en) * | 2022-03-01 | 2022-05-24 | 四川信固科技有限公司 | Enhanced electric hot-melting pipe fitting and preparation method thereof |
| CN117601456A (en) * | 2024-01-22 | 2024-02-27 | 四川省宜宾普什建材有限责任公司 | Processing technology of large-caliber electric melting type plastic pipe fitting |
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| CN101344199A (en) * | 2008-08-15 | 2009-01-14 | 付志敏 | Rotational molding plastic composite pipes with steel rings and manufacturing method thereof |
| CN104441672A (en) * | 2014-11-04 | 2015-03-25 | 四川泰鑫实业发展有限责任公司 | Plastic corrugated pipe with steel belt reinforcing bodies as well as process and equipment for manufacturing same |
| CN104653890A (en) * | 2013-11-25 | 2015-05-27 | 江苏祥生新能源科技有限公司 | Anti-static enhanced hot-melt connecting pipe |
| CN204962068U (en) * | 2015-09-25 | 2016-01-13 | 徐胜 | Belted steel hoop polyethylene double -walled corrugated pipe for drainage with strengthening burying of structure |
| CN216112735U (en) * | 2021-04-26 | 2022-03-22 | 四川信固科技有限公司 | Electric hot melting pipe fitting |
-
2021
- 2021-04-26 CN CN202110455385.0A patent/CN112984258A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344199A (en) * | 2008-08-15 | 2009-01-14 | 付志敏 | Rotational molding plastic composite pipes with steel rings and manufacturing method thereof |
| CN104653890A (en) * | 2013-11-25 | 2015-05-27 | 江苏祥生新能源科技有限公司 | Anti-static enhanced hot-melt connecting pipe |
| CN104441672A (en) * | 2014-11-04 | 2015-03-25 | 四川泰鑫实业发展有限责任公司 | Plastic corrugated pipe with steel belt reinforcing bodies as well as process and equipment for manufacturing same |
| CN204962068U (en) * | 2015-09-25 | 2016-01-13 | 徐胜 | Belted steel hoop polyethylene double -walled corrugated pipe for drainage with strengthening burying of structure |
| CN216112735U (en) * | 2021-04-26 | 2022-03-22 | 四川信固科技有限公司 | Electric hot melting pipe fitting |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580588A (en) * | 2021-08-10 | 2021-11-02 | 安徽杰蓝特新材料有限公司 | Processing technology of extrusion type RTP composite pressure pipe fitting |
| CN114526382A (en) * | 2022-03-01 | 2022-05-24 | 四川信固科技有限公司 | Enhanced electric hot-melting pipe fitting and preparation method thereof |
| CN117601456A (en) * | 2024-01-22 | 2024-02-27 | 四川省宜宾普什建材有限责任公司 | Processing technology of large-caliber electric melting type plastic pipe fitting |
| CN117601456B (en) * | 2024-01-22 | 2024-03-26 | 四川省宜宾普什建材有限责任公司 | Processing technology of large-caliber electric melting type plastic pipe fitting |
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