CN202241997U - Coextrusion cooling air duct used for big-caliber steel-plastic composite pressure pipe - Google Patents
Coextrusion cooling air duct used for big-caliber steel-plastic composite pressure pipe Download PDFInfo
- Publication number
- CN202241997U CN202241997U CN2011203882941U CN201120388294U CN202241997U CN 202241997 U CN202241997 U CN 202241997U CN 2011203882941 U CN2011203882941 U CN 2011203882941U CN 201120388294 U CN201120388294 U CN 201120388294U CN 202241997 U CN202241997 U CN 202241997U
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- air duct
- pipe
- plastic composite
- composite pressure
- pressure pipe
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Abstract
The utility model discloses a coextrusion cooling air duct used for a big-caliber steel-plastic composite pressure pipe, and the coextrusion cooling air duct comprises a bracket and an air duct, wherein the air duce is horizontally fixed above the bracket; the side wall of the air duct is provided with an air inlet; and the air inlet is connected with a fan via an air inlet pipe. The coextrusion cooling air duct ventilates the inner side of the air duct by virtue of the fan, an inner plastic layer on the sponge plug of the steel-plastic composite pressure pipe is cooled to solve the problem of overlong steel wire rope distance and the phenomena of ridging and inner pipe thread caused because steel wire rope support is insufficient when the friction size of a sealing sponge and a pipe wall becomes small in the pipe operation process, the cooling effect is improved, the starting up and the halt are not affected in the using process, and convenience for external plastic cleaning is also taken into consideration.
Description
Technical field
The utility model relates to the cooling device that adopts when a kind of large-diameter steel plastic composite pressure pipe coextrusion process is produced, and especially a kind of large-diameter steel plastic composite pressure pipe cools off air duct with co-extrusion.
Background technology
The steel-plastic composite pressure pipe industry is a kind of new industry that has just grown up recent years, and this tubing is all to mould layer inside and outside a kind of, and the centre is an argon arc butt welding steel pipe, carries out five layers of bonding composite pipe by special-purpose adhesive between steel pipe and the plastics.The large-diameter steel plastic composite pressure pipe is general moulds the manufacturing technique method that layer and adhesive co-extrusion are coated to steel pipe internal-surface in adopting.When adopting this process to produce; The adhesive that steel duct coats with in mould the pneumatics wind of the sponge plug sealing certain pressure that layer supports through rope traction; Bond together on the steel pipe that its inflation is crossed to high-frequency heating and with steel pipe; Coat outer layer glue stick and outer plastic layer then, and pass through but aftershaping of water-cooled.Traditional sponge plug sealing station is the cooling water place of outer plastic layer, and design can cause following technology unstability like this:
(1) steel wire rope of supporting traction sponge distance is long; Tubing seals sponge and the tube wall sponge size decreases that rubs for a long time in running; It is not enough and sagging to cause steel wire rope to support; Contact with the plastic inner pipe wall of high temperature when sagging, produce the corrugate phenomenon at uncooled position easily, tubing is scrapped.
(2) because sponge seals at cool position is far away apart from head, be expanded into type by wind under the pipe co-extrusion mode, the pressure of wind is too small, and it is not tight to cause inwall to fit, and pipe material inner wall is easy to generate the screw thread phenomenon.
(3) because in the outer molding machine head heating running, polyethylene is in the die surface carbonization, cause to mould the surface cut is arranged outward, when needs clear ups since steel wire rope in the interior layer the inside of moulding, can not be in the sawed-off tubing cleaning of outer plastic layer operation, must all fronts shutdown.Startup-shutdown can cause a large amount of technology waste products like this.
The utility model content
When the technical problem that the utility model will solve provides and moulds layer in a kind of large-diameter steel plastic composite pressure pipe and apply with the adhesive co-extrusion, can guarantee sponge plug place and in mould the cooling air duct of layer cooling effect.
For solving the problems of the technologies described above; The technical scheme that the utility model is taked is: a kind of large-diameter steel plastic composite pressure pipe cools off air duct with co-extrusion; It is characterized in that comprising support; And the fixing air duct of said support upper horizontal, offering air inlet on the sidewall of said air duct, said air inlet is connected with blower fan through blast pipe.The utility model utilizes blower fan in air duct, to ventilate, and cools off moulding layer in the steel-plastic composite pressure pipe sponge plug place, avoids long because of the steel wire rope of supporting traction sponge, under the co-extrusion mode, leans on an end wind to be expanded into type, because of the corrugate phenomenon appears in inhomogeneous cooling.
Preferably, said air duct is the cylinder with double-layer structure, is respectively air duct internal layer and air duct skin, and said air duct internal layer is coaxial with the air duct skin, and both two ends fixed connections, is evenly equipped with the aperture of ventilation on the tube wall of said air duct internal layer.Air duct in the utility model is set to inside and outside double-layer structure; Be evenly equipped with the aperture of ventilation on the tube wall of air duct internal layer; Can evenly shunt the air-flow that gets in the air duct; Realize that the inner air-flow of air duct is even, avoid quickening Internal Pipe Thread or the corrugate phenomenon that cooling produces, improve cooling effect because of the part.
Preferably, at least two of the quantity of said air inlet, it is positioned on the same warp of said air duct lateral wall and evenly and distributes.Increasing the quantity of air inlet, is to send into air duct inside more uniformly for the air-flow that improves blower fan.
Preferably, said air duct internal layer and the outer field junction of air duct are for being tightly connected.Seal the junction at air duct internal layer and the outer both ends of air duct; Make between air duct internal layer and the air duct skin and form sealed hollow; The air-flow of blower fan gets into this cavity and is incident upon air duct inside along the holes in spraying on the air duct inner layer tube wall; Air-flow in the cavity can not get into the external world, has improved the utilization rate of cooling blast.
Adopt the beneficial effect that technique scheme produced to be: the utility model is used in when moulding layer with the coating of adhesive co-extrusion in the large-diameter steel plastic composite pressure pipe; Dispose sponge plug in the pipe in air duct; Through blower fan air duct is blown; To the sealing station of sponge and in mould layer and cool off, avoid quickening Internal Pipe Thread or the corrugate phenomenon that cooling produces because of the part; Connect the distance that has shortened sponge plug and head between the use of the utility model; It is long to have solved the steel wire rope distance; Cause steel wire rope to support not enough and corrugate and Internal Pipe Thread phenomenon that produce when sealing sponge and pipe friction size decreases in the tubing running; And do not influence startup-shutdown when using, take into account outer moulding and clear up conveniently.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model;
State diagram when Fig. 2 is the utility model use;
Mould layer wherein, 1, air duct, 2, the air duct internal layer, 3, air duct is outer, 4, blast pipe, 5, blower fan, 6, support, 7, Baogang's pipe, 8, steel wire rope, 9, the sponge plug, 10, tube wall, 11.
The specific embodiment
Can know according to accompanying drawing 1; The utility model is specifically related to a kind of large-diameter steel plastic composite pressure pipe and cools off air duct with co-extrusion, comprises support 6, and the fixing air duct 1 of support 6 upper horizontal; Offer air inlet on the sidewall of air duct 1; Air inlet is connected with blower fan 5 through blast pipe 4, at least two of the quantity of air inlet, and it is positioned on the same warp of air duct lateral wall and even distribution.
The concrete occupation mode of the utility model is shown in accompanying drawing 2; Baogang's pipe 7 of moulding layer 11 and adhesive in the tube wall 10 that high-frequency heating is crossed has penetrates air duct 1 inside; And sponge plug 9 parts that connect sealing through steel wire rope 8 are reserved in air duct 1 inside, through blower fan 5 air blast cooling, divide two-way to send in the air duct 1 wind; And mould layer 11 in uniformly cooling is sticked under the aperture effect of air duct internal layer 2, make and mould the purpose that layer 11 hardening cannot not reach stickingly sponge in softening.
The utility model forms for the ordinary carbon steel processing and fabricating, and external air blast compressor set provides the air blast cooling.The utility model installation site is outside before the adhesive coated; Solve the outer plastic layer operation and can not mould the sawed-off tubing cleaning of operation unusually outside; And the problem that must shut down completely; Shortened sponge plug 9 and head distance after adopting this device, it is long to have solved steel wire rope 8 distances, causes steel wire rope to support not enough and corrugate and Internal Pipe Thread phenomenon that produce when sealing sponge and tube wall 10 rub size decreases in the tubing running.
Claims (4)
1. a large-diameter steel plastic composite pressure pipe cools off air duct with co-extrusion; It is characterized in that comprising support (6); And the fixing air duct (1) of said support (6) upper horizontal; Offer air inlet on the sidewall of said air duct (1), said air inlet is connected with blower fan (5) through blast pipe (4).
2. large-diameter steel plastic composite pressure pipe according to claim 1 cools off air duct with co-extrusion; It is characterized in that said air duct (1) is for having the cylinder of double-layer structure; Be respectively air duct internal layer (2) and air duct outer (3); Said air duct internal layer (2) is coaxial with air duct outer (3), and both two ends fixed connections, is evenly equipped with the aperture of ventilation on the tube wall of said air duct internal layer (2).
3. large-diameter steel plastic composite pressure pipe according to claim 1 cools off air duct with co-extrusion, it is characterized in that at least two of the quantity of said air inlet, and it is positioned on the same warp of said air duct lateral wall and evenly distributes.
4. large-diameter steel plastic composite pressure pipe according to claim 2 cools off air duct with co-extrusion, and the junction that it is characterized in that said air duct internal layer (2) and air duct outer (3) is for being tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203882941U CN202241997U (en) | 2011-10-13 | 2011-10-13 | Coextrusion cooling air duct used for big-caliber steel-plastic composite pressure pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203882941U CN202241997U (en) | 2011-10-13 | 2011-10-13 | Coextrusion cooling air duct used for big-caliber steel-plastic composite pressure pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202241997U true CN202241997U (en) | 2012-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203882941U Expired - Lifetime CN202241997U (en) | 2011-10-13 | 2011-10-13 | Coextrusion cooling air duct used for big-caliber steel-plastic composite pressure pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202241997U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070272A (en) * | 2013-03-26 | 2014-10-01 | 江苏承中和高精度钢管制造有限公司 | Air cooling device for welded pipes |
| CN105058744A (en) * | 2015-07-21 | 2015-11-18 | 成都领航科技股份有限公司 | Uniform ventilation wall device for cooling three rolls in extrusion process of diffusion plate |
| CN107471587A (en) * | 2017-08-10 | 2017-12-15 | 新兴铸管股份有限公司 | A kind of steel-plastic composite pressure pipe co-extrusion is bonded compound stable-pressure device |
-
2011
- 2011-10-13 CN CN2011203882941U patent/CN202241997U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070272A (en) * | 2013-03-26 | 2014-10-01 | 江苏承中和高精度钢管制造有限公司 | Air cooling device for welded pipes |
| CN105058744A (en) * | 2015-07-21 | 2015-11-18 | 成都领航科技股份有限公司 | Uniform ventilation wall device for cooling three rolls in extrusion process of diffusion plate |
| CN107471587A (en) * | 2017-08-10 | 2017-12-15 | 新兴铸管股份有限公司 | A kind of steel-plastic composite pressure pipe co-extrusion is bonded compound stable-pressure device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |