CN106594406B - A kind of inner lining plastic tube cast iron pipe and its manufacture method - Google Patents

A kind of inner lining plastic tube cast iron pipe and its manufacture method Download PDF

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Publication number
CN106594406B
CN106594406B CN201710082463.0A CN201710082463A CN106594406B CN 106594406 B CN106594406 B CN 106594406B CN 201710082463 A CN201710082463 A CN 201710082463A CN 106594406 B CN106594406 B CN 106594406B
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CN
China
Prior art keywords
pipe
cast iron
heating
iron pipe
plastic tube
Prior art date
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Application number
CN201710082463.0A
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Chinese (zh)
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CN106594406A (en
Inventor
肖和飞
尹希伟
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HUNAN ZHENHUI PIPE CO Ltd
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HUNAN ZHENHUI PIPE CO Ltd
Priority date (The priority date 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 date listed.)
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Application filed by HUNAN ZHENHUI PIPE CO Ltd filed Critical HUNAN ZHENHUI PIPE CO Ltd
Priority to CN201710082463.0A priority Critical patent/CN106594406B/en
Publication of CN106594406A publication Critical patent/CN106594406A/en
Priority to SG11201907511RA priority patent/SG11201907511RA/en
Priority to PCT/CN2017/111477 priority patent/WO2018149188A1/en
Priority to GB1911610.2A priority patent/GB2573244B/en
Application granted granted Critical
Publication of CN106594406B publication Critical patent/CN106594406B/en
Priority to TW107102655A priority patent/TWI657217B/en
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Classifications

    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
    • B29C63/341—Lining or sheathing of internal surfaces using tubular layers or sheathings pressed against the wall by mechanical means
    • 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
    • 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
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0065—Heat treatment
    • B29C63/0069—Heat treatment of tubular articles
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/48—Preparation of the surfaces
    • B29C63/481—Preparation of the surfaces mechanically

Abstract

A kind of inner lining plastic tube cast iron pipe and its manufacture method, the inner lining plastic tube cast iron pipe includes cast iron pipe and compound plastic pipe, the compound plastic pipe is made up of outer layer hot melt adhesive layer and inner layer plastic tube, described compound plastic pipe through being made online, described cast iron pipe inner wall carries out sandblasting, shot-peening or Shot Blasting after polishing, described compound plastic pipe is pulled in the cast iron pipe handled well, by the sealing of compound plastic pipe both ends, inflation, after heating, cooling, cast iron pipe and compound plastic pipe cementation, deburring, spraying, mark.Present invention additionally comprises a kind of manufacture method of inner lining plastic tube cast iron pipe.The defects of overcoming existing cement mortar nodular cast iron tube with liner and epoxy resin, epoxy ceramic nodular cast iron tube with liner using the present invention, it is suitable for the fields such as feedwater, combustion gas, draining, blowdown, heating, is current optimal water transferring line product.

Description

A kind of inner lining plastic tube cast iron pipe and its manufacture method
Technical field
The present invention relates to a kind of inner lining plastic tube cast iron pipe and its manufacture method.
Background technology
Existing plain cast iron pipe, because of its preferable combination property, water supply aqueduct is often used as, in order to solve cast iron pipe Anticorrosion, most common method are that cement mortar liner or epoxy resin, epoxy ceramic liner are used in cast iron pipe as this The preferred anti-corrosion mode of class pipeline；Using cement mortar liner as drinking water aqueduct, because inwall is rough, current resistance Power is big, and easy fouling, and reactive material caused by hardening of cement influences water quality, and thickness of inner lining is larger, reaches 3-12mm, emptying effectiveness Relatively low, cement lining causes whole body weight to increase, and is unfavorable for construction and installation, and cement lining processing is inconvenient, attachment Power is poor, and the impact and pipe deformations during construction and installation easily cause cement and come off, and cement lining remains many to be resolved Difficult point, so the liner mode that cement lining has not been；Using epoxy resin liner, come off because inner liner is easily layered, material Material cost is high, influence of the harmful substance to water quality and health caused by Curing Process of Epoxy, it is difficult to be widely applied, Using epoxy ceramic liner, although having very high adhesive force and finish, manufacture difficulty is big, and equipment is complicated, and cost is high, only Particularity engineering can be used for, can not be widely used.
The content of the invention
The technical problem to be solved by the invention is to provide a kind of inner lining plastic tube cast iron pipe, its simple in construction, making is held Easily, cost is low, good mechanical property, hygienic environment-protecting, corrosion resistance is good, service life is long, inner wall smooth, small flow resistance, defeated Water efficiency high, energy consumption are low, liner adhesive force is high, environmental suitability is strong, cost-effective and be easy to popularize.
Further technical problem to be solved of the invention is to provide a kind of manufacture method of inner lining plastic tube cast iron pipe, It passes through continuous online making compound plastic pipe；Sandblasting, shot-peening or ball blast are carried out after cast iron pipe inner wall polishing；Plastic composite pipe Material is pulled in the cast iron pipe that inwall is handled well, sealed, inflation, heating, cooling, deburring, spraying, mark process on-line operation, So as to realize the making of inner lining plastic tube cast iron pipe.
The technical solution adopted for the present invention to solve the technical problems is：
The inner lining plastic tube cast iron pipe of the present invention, including cast iron pipe and compound plastic pipe, the compound plastic pipe by Outer layer hot melt adhesive layer and inner layer plastic tube are formed, and described compound plastic pipe through being made online, in described cast iron pipe Wall carries out sandblasting, shot-peening or Shot Blasting after polishing, and described compound plastic pipe is pulled in the cast iron pipe handled well, will The sealing of compound plastic pipe both ends, inflation, after heating, cool down, cast iron pipe and compound plastic pipe cementation, deburring, spraying, Mark.
Further, described compound plastic pipe is pulled in the cast iron pipe handled well, then be placed on bushing pipe platform, will moulded Expect the sealing of composite pipe both ends, inflation, passed through by moving cart through the heating devices heat or heater of bushing pipe platform Moving cart heats through tubing.
Further, described mode of heating is sensing heating, can be low frequency, intermediate frequency, high frequency or superaudio sensing heating, excellent Select Frequency Induction Heating.
Further, the cast iron pipe is spigot-and-socket ductile iron pipe.
The manufacture method of the inner lining plastic tube cast iron pipe of the present invention, comprises the following steps：
A, plastic resin and PUR make compound plastic pipe
1）Plastic resin, PUR drying process；
2）Co-extrusion is extruded or PUR applies on the plastic tube outside；
3）Vacuum shaping；
4）Cooling；
5）Traction；
6）Fixed length cutting；
B, cast iron pipe（Include outer wall zinc layers）Inwall processing
7）Inwall is polished；
8）Sandblasting, shot-peening or ball blast；
C, trombone slide
9）Clamp；
10）Pull in；
D, bushing pipe
11）Sealing；
12）Inflation；
13）Heating；
14）Cooling；
15）Deburring；
16）Spraying；
17）Mark；
E, detection, check and accepting storing.
Further, in order to improve the quality of inner lining plastic tube cast iron pipe and production efficiency, reduce energy consumption and production costs, its Further step is：
Step 2）In, co-extrusion extruding and hot melting glue-line or the thickness 0.2-0.5mm for applying hot melt adhesive layer outside.
Step 12）In, inner gas pressure is 0.2MPa ± 0.05MPa.
Step 13）In, heating-up temperature：Away within pipe end 300mm be 170 DEG C ± 5 DEG C, away from pipe end 300mm with Outer is 150 DEG C ± 5 DEG C.
Step 13）In, by the change of temperature automatically adjust heating power or tubing and heating collar relative moving speed with Control heating-up temperature.
Step 14）In, outer pipe wall temperature is kept for 50-60 DEG C after cooling.
The manufacture method of the inner lining plastic tube cast iron pipe of the present invention, it is plastics that it, which includes the online internal layer that makes,（Polyethylene）、 Outer layer is the compound plastic pipe of PUR；Cast iron pipe inner wall carries out sandblasting, shot-peening or Shot Blasting again after the processing of interior mill；Will Compound plastic pipe is pulled in the cast iron pipe handled well, then is placed in bushing pipe platform and is sealed pipe both ends, inflate, and passes through moving cart Heating devices heat or heater through bushing pipe platform are heated by moving cart through tubing, water-spraying control, or heating Device is heated by moving cart through tubing, trimmer deburring, flush coater spraying, ink jet numbering machine mark.It overcomes existing water Inwall existing for cement mortar nodular cast iron tube with liner is rough, and resistance to water-flow is big, easy fouling, is harmful to caused by hardening of cement process Material influences water quality, and thickness of inner lining is big, and emptying effectiveness is low, and tubing is hit, deforms the defects of cement is easy to fall off；Also overcome existing Have that epoxy resin, epoxy ceramic nodular cast iron tube with liner cost of manufacture are high, easily layering, Curing Process of Epoxy influence water quality and The defects of worker health.
Compared with prior art, the invention has the characteristics that：
（1）The present invention makes cast iron pipe thickness of inner lining using the technical scheme of cast iron pipe and compound plastic pipe entirety cementation Reducing, internal diameter increase, water passing capacity and emptying effectiveness greatly improve, while reach energy-saving effect, and liner is plastic tube, The cost of material is low.
（2）The present invention becomes cast iron tube wall using the technical scheme of cast iron pipe and compound plastic pipe entirety cementation Smooth and non-scaling, small flow resistance, pipeline comprehensive energy consumption and operating cost substantially reduce.
（3）The present invention uses the technical scheme of cast iron pipe and compound plastic pipe entirety cementation, and plastic lining obstructs completely Contact of the water with cast iron tube wall, has prevented the secondary pollution of water quality during water delivery, water quality is become much cleaner health.
（4）The present invention keeps ductile iron pipe using the technical scheme of cast iron pipe and compound plastic pipe entirety cementation Good mechanical performance, inner lining plastic tube greatly improve pipeline corrosion resistance and service life to cast iron pipe in itself.
（5）For the present invention using the technical scheme of cast iron pipe and compound plastic pipe entirety cementation, internal layer is polyethylene pipe, tough Property it is good, ectonexine using PUR be bonded, substantially increase the adhesive force of cast iron pipe and lined with polyethylene pipe, solve in other Lining mode inner liner is easy to crack, the problem of being layered, coming off, and construction is become convenient, fast, simple.
（6）The present invention makes cast iron pipe inner wall more smooth using polishing cast iron pipe inner wall, then by sandblasting, Shot-peening or ball blast technique processing, greatly improve cast iron pipe and hot melt adhesive layer, the bonding quality of inner lining plastic tube, make production tube More smooth, resistance to water-flow can be smaller, and the comprehensive energy consumption and operating cost of pipeline can be even lower.
（7）The present invention is suitable for the production of heavy caliber pipe（Prior art is only adapted to the following tubing of bore 500mm, this Invention is adaptable to bore 2600mm above tubing）, while equipment simple and flexible, it is suitable for factory lines, produces in enormous quantities, Production efficiency is high, and production cost is low, greatly improves the inner lining plastic tube cast iron pipe market competitiveness.
（8）The technical scheme sprayed after bushing pipe that the present invention uses is compound, heated using bushing pipe compound tense tubing Residual temperature accelerate spraying rate of drying, improve production efficiency.
（9）Preferably, the present invention automatically adjusts heating power or by tubing and heating collar by the change of heating-up temperature Relative moving speed come reach temperature heating stability, make each position heating-up temperature of tubing uniform so that cast iron pipe with heat Melt layer and plastic tube bonding plane are without leak source, and product quality is stable, and one-shot forming qualification rate is high, and energy-conserving and environment-protective.
Embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment
The inner lining plastic tube spigot-and-socket ductile iron pipe of the present embodiment, including spigot-and-socket ductile iron pipe and plastic composite pipe Material, the compound plastic pipe is by outer layer hot melt adhesive layer and inner layer plastic tube（Polyethylene）Form.
Described compound plastic pipe through being made online：Polyethylene and PUR drying process, the extruded machine of difference Extrusion produces the double-layer plastic composite pipe that outer layer is PUR, internal layer is polyethylene, hot melt adhesive layer thickness to co-extruding mould For 0.3mm, polyethylene layer thickness is 3mm, and external diameter is smaller 0.5mm than spheroidal graphite cast-iron bore, then by Vacuum shaping, cooling, is led Draw machine travel, the length cut into required for bushing pipe composite molding.
Described ductile iron pipe inner wall polishes flat through interior grinding machine, then by the ductile iron pipe to polish flat through sandblasting, Shot-peening or ball blast, ductile iron pipe inner wall oxide layer, iron rust is removed totally and obtain the frosting of certain roughness.
In order to ensure that inner lining plastic tube smoothly pulls in ductile iron pipe and facilitates seal head sealed liner plastic tube, will mould Trombone slide machine clamp is inserted in material multiple tube one end, and the ductile iron pipe that inwall is handled well is placed in trombone slide machine platform, by plastic composite pipe Pull in ductile iron pipe, plastic composite pipe both ends respectively reserve the length required for bushing pipe platform seal head.
In order to ensure that ductile iron pipe is bonded as one with inner lining plastic tube, tubing is placed in bushing pipe platform running trolley On, the sealed head sealing in plastic tube both ends, compressed air is filled with to 0.2MPa, startup optimization dolly, is started by optoelectronic switch Intermediate frequency induction heating device（Medium frequency induction device is existing equipment）Heating, heating control system set tubing heating-up temperature be away from It is 170 DEG C within socket end 300mm, away from being 150 DEG C beyond socket end 300mm, heating work(is automatically adjusted by the change of temperature Rate or tubing and heating collar relative moving speed make tubing heating-up temperature meet temperature program(me) requirement, edge to control heating-up temperature Tubing moving direction sets cooling water ring apart from heating collar 300mm-600mm, and carrying out water drenching after tubing heating cools down 50 DEG C -60 DEG C, meanwhile, air pressure 3-10min in tubing is kept, discharging platform is discharged into, deburring is carried out with trimmer；Deburring is completed, after heating Residual temperature sprayed through flush coater, ink jet numbering machine carry out coding mark.
The manufacture method of described inner lining plastic tube spigot-and-socket ductile iron pipe, comprises the following steps：
A, polyethylene and PUR make plastic composite pipe
1）Polyethylene, PUR drying process-dryer；
2）Co-extrusion extrusion-extruder, co-extruding mould；
3）Vacuum shaping-calibration sleeve, vacuum tank；
4）Cooling-spray water tank；
5）Traction-hauling machine；
6）Fixed length cutting-cutting machine；
B, spigot-and-socket ductile iron pipe（Include outer wall zinc layers）Inwall processing
7）Inwall polishing-interior grinding machine；
8）Sandblasting, shot-peening or ball blast-sand-blasting machine, compressed air shotblasting machine or shot-blasting machine；
C, trombone slide
9）Clamp-fixture；
10）Pull in-bench；
D, bushing pipe
11）Sealing-seal head；
12）Inflation-gas tube；
13）Heating-intermediate frequency induction heating device, running trolley；
14）Cooling-water ring；
15）Deburring-trimmer；
16）Spraying-flush coater；
17）Mark-ink jet numbering machine；
E, detection, check and accepting storing.

Claims (7)

  1. A kind of 1. inner lining plastic tube cast iron pipe, it is characterised in that：Including cast iron pipe and compound plastic pipe, the plastic composite pipe Material is made up of outer layer hot melt adhesive layer and inner layer plastic tube, and described compound plastic pipe through being made online, described cast iron Inside pipe wall carries out sandblasting, shot-peening or Shot Blasting after polishing, and described compound plastic pipe is pulled in the cast iron pipe handled well It is interior, then be placed on bushing pipe platform, by the sealing of compound plastic pipe both ends, inflation, pass through moving cart adding through bushing pipe platform Thermal is heated or heater is heated by moving cart through tubing, and described mode of heating is sensing heating, passes through temperature The change of degree automatically adjusts heating power or tubing with heating collar relative moving speed to control heating-up temperature, after heating, Cooling, cast iron pipe and compound plastic pipe cementation, deburring, are sprayed, mark.
  2. 2. inner lining plastic tube cast iron pipe according to claim 1, it is characterised in that：Described sensing heating be low frequency, in Frequently, high frequency or superaudio heating.
  3. 3. a kind of manufacture method of inner lining plastic tube cast iron pipe, it is characterised in that comprise the following steps：
    A, plastic resin and PUR make compound plastic pipe
    1）Plastic resin, PUR drying process；
    2）Co-extrusion is extruded or PUR applies on the plastic tube outside；
    3）Vacuum shaping；
    4）Cooling；
    5）Traction；
    6）Fixed length cutting；
    B, cast iron pipe inner wall is handled
    7）Inwall is polished；
    8）Sandblasting, shot-peening or ball blast；
    C, trombone slide
    9）Clamp；
    10）Pull in；
    D, bushing pipe
    11）Sealing；
    12）Inflation；
    13）Heating；
    Heated by moving cart through the heating devices heat or heater of bushing pipe platform by moving cart through tubing, Described mode of heating is sensing heating, and automatically adjust heating power or tubing by the change of temperature relatively moves with heating collar Speed is to control heating-up temperature；
    14）Cooling；
    15）Deburring；
    16）Spraying；
    17）Mark；
    E, detection, check and accepting storing.
  4. 4. the manufacture method of inner lining plastic tube cast iron pipe according to claim 3, it is characterised in that step 2）In, co-extrusion Extruding and hot melting glue-line or the thickness for applying hot melt adhesive layer outside are 0.2-0.5mm.
  5. 5. the manufacture method of inner lining plastic tube cast iron pipe according to claim 4, it is characterised in that step 12）In, inflation Air pressure is 0.2MPa ± 0.05MPa.
  6. 6. the manufacture method of inner lining plastic tube cast iron pipe according to claim 5, it is characterised in that step 13）In, heating Temperature：It is 150 DEG C ± 5 DEG C in addition away from pipe end 300mm away from being 170 DEG C ± 5 DEG C within pipe end 300mm.
  7. 7. the manufacture method of inner lining plastic tube cast iron pipe according to claim 6, it is characterised in that step 14）In, cooling Outer pipe wall temperature is kept for 50-60 DEG C afterwards.
CN201710082463.0A 2017-02-16 2017-02-16 A kind of inner lining plastic tube cast iron pipe and its manufacture method Active CN106594406B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201710082463.0A CN106594406B (en) 2017-02-16 2017-02-16 A kind of inner lining plastic tube cast iron pipe and its manufacture method
SG11201907511RA SG11201907511RA (en) 2017-02-16 2017-11-17 Ductile iron pipe lined with plastic pipe liner and method for manufacturing same
PCT/CN2017/111477 WO2018149188A1 (en) 2017-02-16 2017-11-17 Cast iron pipe lined with plastic pipe liner and manufacturing method thereof
GB1911610.2A GB2573244B (en) 2017-02-16 2017-11-17 Ductile iron pipe lined with plastic pipe liner and method for manufacturing same
TW107102655A TWI657217B (en) 2017-02-16 2018-01-25 Cast iron pipe lined with plastic pipe and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710082463.0A CN106594406B (en) 2017-02-16 2017-02-16 A kind of inner lining plastic tube cast iron pipe and its manufacture method

Publications (2)

Publication Number Publication Date
CN106594406A CN106594406A (en) 2017-04-26
CN106594406B true CN106594406B (en) 2017-11-21

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GB (1) GB2573244B (en)
SG (1) SG11201907511RA (en)
TW (1) TWI657217B (en)
WO (1) WO2018149188A1 (en)

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CN106594406B (en) * 2017-02-16 2017-11-21 湖南振辉管业有限公司 A kind of inner lining plastic tube cast iron pipe and its manufacture method
CN109049744A (en) * 2018-08-13 2018-12-21 湖南振辉管业有限公司 Bench
CN109323052B (en) * 2018-10-23 2021-09-03 济南德士净水管道制造有限公司 Composite pipeline and manufacturing method thereof
CN109237146A (en) * 2018-11-06 2019-01-18 湖南振辉管业有限公司 Embedded port enhancing ring composite metal-plastic pipe and its manufacturing method
CN109210286A (en) * 2018-11-06 2019-01-15 湖南振辉管业有限公司 Outer plastic-coated lining plastic metal composite pipe and its manufacturing method
CN111452400A (en) * 2020-04-17 2020-07-28 衡水市东晨矿山机械制造有限公司 Production process of drainage pipe fitting for mine

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Publication number Publication date
WO2018149188A1 (en) 2018-08-23
CN106594406A (en) 2017-04-26
SG11201907511RA (en) 2019-09-27
GB2573244A (en) 2019-10-30
TW201831814A (en) 2018-09-01
GB2573244B (en) 2022-07-27
TWI657217B (en) 2019-04-21
GB201911610D0 (en) 2019-09-25

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