CN1817614A - Continuously extruding foam thermal-insulative piping material with polystyrene and production thereof - Google Patents
Continuously extruding foam thermal-insulative piping material with polystyrene and production thereof Download PDFInfo
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- CN1817614A CN1817614A CNA2006100420817A CN200610042081A CN1817614A CN 1817614 A CN1817614 A CN 1817614A CN A2006100420817 A CNA2006100420817 A CN A2006100420817A CN 200610042081 A CN200610042081 A CN 200610042081A CN 1817614 A CN1817614 A CN 1817614A
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Abstract
A continuously extruded insulating foam polystyrene pipe used for heating engineering is prepared through continuously extruding out foam polystyrene layer, attaching it onto external surface of steel pipe, continuously extruding out high-density polyethene layer, attaching it onto said foam polystyrene layer, foaming, and coating.
Description
Affiliated technical field
The present invention relates to a kind of foam thermal-insulative piping material with polystyrene and production method thereof, this tubing is made by steel pipe, mainly is heat-insulating pipe and the manufacture method thereof that is used for municipal works heating system trunk line.
Background technology
The heat-insulating pipe of existing municipal works heating system trunk line, generally outer by polyurethane foam plastics by steel pipe and its, and outside polyurethane foam plastics, be composited by high density polyethylene pipe.Steel pipe is used to carry the continuous operation temperature not to be higher than 120 ℃; the occasional peaks temperature is not higher than 140 ℃; operating pressure is not more than the medium of 2.5MPa; the polyurethane foam plastics layer is as heat-insulation layer; the temperature that keeps the institute's pumped (conveying) medium in the steel pipe; and high density polyethylene pipe has corrosion resistance and environmental stress cracking resistance, mainly plays the outer layer protection effect.Its production method of this heat-insulating pipe adopts and discontinuously extrudes, composite foamed, single-piece production technology.The complex heat-preservation tubing that this production method is produced, owing to adopt discontinuous extruding and single-piece production, production efficiency is lower, because the strength ratio of polyurethane foam plastics is lower, pipe workpiece quality is affected, in addition because polyurethane foam plastics price comparison height causes the cost of polyurethane foam heat-insulating pipe higher.
Summary of the invention
Adopt discontinuous extruding in order to overcome its production method of existing heat-insulating pipe, composite foamed, single-piece production technology, production efficiency is low, the strength ratio of polyurethane foam plastics is lower, pipe workpiece quality is affected, and polyurethane foam plastics price comparison height, cause the cost problem of higher of polyurethane foam heat-insulating pipe, the invention provides a kind of continuously extruding foam thermal-insulative piping material with polystyrene and production method thereof, the polyurethane foam heat-insulation layer that replaces existing polyurethane foam heat-insulating pipe with the foamed polystyrene heat-insulation layer, replace existing polyurethane foam intermittently to produce with continuous expressing technique, and, make continuous extrusion foaming technology be achieved providing a kind of foaming and setting hauling machine equipment in the expressing technique continuously.The complex heat-preservation tubing that this production method is produced, can overcome and adopt discontinuous extruding and single-piece production, the problem that production efficiency is lower, enhance productivity, and can change because the strength ratio of polyurethane foam plastics is lower, the situation that price comparison is high, the service life of improving municipal works heating system trunk line, and reduce municipal works heating system construction cost.
For achieving the above object, the concrete technical scheme of the present invention's employing is:
Be responsible for the subject matter that heat-insulating pipe exists at existing municipal works heating system, according to physics, chemical feature and the performance of relevant plastics, basic technical scheme of the present invention comprises:
A kind of continuously extruding foam thermal-insulative piping material with polystyrene production method is characterized in that it is made of following technology:
1. extruding continuously of foamed polystyrene layer:
Polystyrene raw material is through automatical feeding system, add in the drying hopper of polystyrene extruder, through after the removal moisture drying by the screw rod extrusion plasticizing, polystyrene after the plasticizing is supplied with foam extrusion machine, simultaneously blowing agent is added in the extruder, through the abundant mixing and the extruding of foam extrusion machine screw rod, clamp-on extrusion die at last, here be compound on the outer wall of steel pipe;
2. extruding continuously of high-density polyethylene layer:
The high density polyethylene (HDPE) raw material adds in the drying hopper of high density polyethylene (HDPE) extruder through the raw material automatical feeding system, through behind the desiccant dehumidification, screw rod extrusion plasticizing by the high density polyethylene (HDPE) extruder, high density polyethylene (HDPE) material after the plasticizing is supplied with outer coating mould, here is compound on the foamed polystyrene layer of steel pipe outside;
3. composite foamed, the coating of steel pipe and middle insulating foam layer and external protection:
Will be through rust cleaning; the steel pipe of oil removal treatment; by a delivery platform; being transported to one by one carried in the hauling machine; by carry hauling machine eject active force continuous offer extrusion die; here; steel pipe is compound to the foamed polystyrene layer; and finish foaming process in the passage in the foaming and setting hauling machine; said foaming and setting hauling machine by crawler belt module up and down to synthetic columniform passage; this passage is at the uniform velocity mobile; make the continuous formation of foamed polystyrene layer and be coated on the inner layer steel pipe; and gradually by last; following crawler belt module cooling and typing; multiple tube be pulled and finalize the design after enter outer coating mould; extrude the compound outer protective layer of going up here continuously; and through the spraying cooling water groove of back with the outer layer polyethylene cooling and shaping, be cut into the size of fixed length through planet cut-off again and stack, finish whole production technology.
Foam thermal-insulative piping material with polystyrene product in one; it is characterized in that it is to adopt foregoing invention continuously extruding foam thermal-insulative piping material with polystyrene production method to produce; be compounded with the foamed polystyrene heat-insulation layer in the steel pipe outside, its outside is compounded with high density polyethylene protective coating again.
The special equipment that uses in the production method of continuously extruding foam thermal-insulative piping material with polystyrene of the present invention is a tinuous production, comprise: 1 carries hauling machine, 2 polystyrene extruders, 3 foam extrusion machines, 4 foaming and setting hauling machines, 5 polyethylene extruders, 6 outer coating moulds, 7 extrusion dies, 8 spraying cooling water grooves, 9 planet cut-offs, the employed special equipment of described aforementioned production method, dispose accordingly according to following working procedure, steel pipe enters the conveying hauling machine through delivery platform, enter extrusion die (7), polystyrene raw material enters the drying hopper of polystyrene extruder through automatical feeding system, enter the polystyrene extruder then, enter foam extrusion machine again, enter extrusion die, enter the foaming and setting hauling machine then, the polyethylene raw material enters the polyethylene automatical feeding system, enter the drying hopper of high density polyethylene (HDPE) extruder then, enter the high density polyethylene (HDPE) extruder, enter then and come out from the foaming and setting hauling machine, be coated with the outer coating mould of the steel pipe of expanded polystyrene (EPS) heat-insulation layer, and then enter spraying cooling water groove and planet cut-off.
In technique scheme, it is characterized in that said foaming and setting hauling machine by upper and lower crawler belt module to synthetic columniform passage, this passage is at the uniform velocity mobile, and make the continuous formation of foamed polystyrene layer and be coated on the inner layer steel pipe, and gradually by cooling of crawler belt module and typing up and down.
The present invention has following good effect:
The invention provides a kind of continuously extruding foam thermal-insulative piping material with polystyrene and production method thereof, this heat-insulating pipe is mainly used in carries the continuous operation temperature not to be higher than 120 ℃, the occasional peaks temperature is not higher than 140 ℃, operating pressure is not more than the medium of 2.5MPa, the polyurethane foam heat-insulation layer that replaces existing polyurethane foam heat-insulating pipe with the foamed polystyrene heat-insulation layer, replace existing polyurethane foam intermittently to produce with continuous expressing technique, and, make continuous extrusion foaming technology be achieved providing a kind of foaming and setting hauling machine equipment in the expressing technique continuously.The composite pipe that this production method is produced, can overcome discontinuous extruding and single-piece production, the problem that production efficiency is lower, realize producing continuously, thereby enhance productivity, and intensity and the service life that can improve municipal works heating system trunk line, reduce municipal works heating system construction cost.
Below in conjunction with drawings and Examples the present invention is done explanation in further detail:
Fig. 1 is the structural representation of product continuously extruding foam thermal-insulative piping material with polystyrene of the present invention;
Fig. 2 is the continuously extruding foam thermal-insulative piping material with polystyrene technological process of production of the present invention and special equipment tinuous production schematic diagram.
In the drawings, 1 carries hauling machine, 2 polystyrene extruders; 3 foam extrusion machines; 4 foaming and setting hauling machines, 5 high density polyethylene (HDPE) extruders, 6 outer coating moulds; 7 extrusion dies; 8 spraying cooling water grooves, 9 planet cut-offs, the 10th, steel pipe; the 11st, polystyrene raw material; the 12nd, high density polyethylene (HDPE) raw material, the 13rd, delivery platform, the 14th, automatical feeding system; the 15th, drying hopper; the 16th, blowing agent, the 17th, automatical feeding system, the 18th, drying hopper; the 22nd, foamed polystyrene heat-insulation layer, the 33rd, high density polyethylene protective coating.
In Fig. 1, a kind of continuously extruding foam thermal-insulative piping material with polystyrene production method is characterized in that it is made of following technology:
Extruding continuously of foamed polystyrene layer: polystyrene raw material (11) is through automatical feeding system (14), add in the drying hopper (15) of polystyrene extruder (2), through after the removal moisture drying by the screw rod extrusion plasticizing, polystyrene after the plasticizing is supplied with foam extrusion machine (3), simultaneously blowing agent (16) is added in the extruder, through the abundant mixing and the extruding of foam extrusion machine screw rod, clamp-on extrusion die (7) at last, here be compound on the outer wall of steel pipe (10); Extruding continuously of high-density polyethylene layer: high density polyethylene (HDPE) raw material (12) adds in the drying hopper (18) of high density polyethylene (HDPE) extruder (5) through raw material automatical feeding system (17), through behind the desiccant dehumidification, screw rod extrusion plasticizing by high density polyethylene (HDPE) extruder (5), high density polyethylene (HDPE) material after the plasticizing is supplied with outer coating mould (6), here is compound on the foamed polystyrene heat-insulation layer of steel pipe (10) outside (22); Steel pipe (10) is composite foamed with middle foamed polystyrene heat-insulation layer (22) and outer high density polyethylene protective coating (33); apply: will be through rust cleaning; the steel pipe of oil removal treatment (10); by a delivery platform (13); being transported to one by one carried in the hauling machine (1); by carry hauling machine (1) eject active force continuous offer extrusion die (7); here; steel pipe (10) is compound to foamed polystyrene layer (22); and finish foaming process in the passage in foaming and setting hauling machine (4); said foaming and setting hauling machine (4) by crawler belt module up and down to synthetic columniform passage; this passage is at the uniform velocity mobile; make the continuous formation of foamed polystyrene layer (22) and be coated on the inner layer steel pipe (10); and gradually by last; following crawler belt module cooling and typing; multiple tube be pulled and finalize the design after enter outer coating mould (6); extrude the compound outer high density polyethylene protective coating (33) that here continuously; and through the spraying cooling water groove (8) of back with the outer layer polyethylene cooling and shaping; pass through size and stacking that planet cut-off (9) is cut into fixed length again, finish whole production technology.
In Fig. 2; a kind of continuously extruding foam thermal-insulative piping material with polystyrene product; it is characterized in that it is to adopt above-mentioned polystyrene heat-preservation tubing production technology to be compounded with foamed polystyrene heat-insulation layer (22) in steel pipe (10) outside, its outside is compounded with high density polyethylene protective coating (33) again.
Fig. 1 gives the special equipment tinuous production that uses in the production method of continuously extruding foam thermal-insulative piping material with polystyrene of the present invention, comprise: 1 carries hauling machine, 2 polystyrene extruders, 3 foam extrusion machines, 4 foaming and setting hauling machines, 5 polyethylene extruders, 6 outer coating moulds, 7 extrusion dies, 8 spraying cooling water grooves, 9 planet cut-offs, the employed equipment of described aforementioned production method, dispose accordingly according to following working procedure, steel pipe (10) enters through delivery platform (13) and carries hauling machine (1), enter extrusion die (7), polystyrene raw material (11) enters the drying hopper (15) of polystyrene extruder (2) through automatical feeding system (14), enter polystyrene extruder (2) then, enter foam extrusion machine (3) again, enter extrusion die (7), enter foaming and setting hauling machine (4) then, high density polyethylene (HDPE) raw material (12) enters polyethylene automatical feeding system (17), enter the drying hopper (18) of high density polyethylene (HDPE) extruder (5) then, enter high density polyethylene (HDPE) extruder (5), enter then to come out from foaming and setting hauling machine (4), be coated with the outer coating mould (6) of the steel pipe (10) of expanded polystyrene (EPS) heat-insulation layer (22), and then enter spraying cooling water groove (8) and planet cut-off (9).
In technique scheme, it is characterized in that said foaming and setting hauling machine (4) by upper and lower crawler belt module to synthetic columniform passage, this passage is at the uniform velocity mobile, make the continuous formation of foamed polystyrene layer (22) and be coated on the inner layer steel pipe, and gradually by cooling of crawler belt module and typing up and down.
The specific embodiment
Most preferred embodiment of the present invention:
The 1st, the STLQ-400 type that sharp mechanical joint-stock company of Qingdao Germany and Italy produces is carried hauling machine; the 2nd, SJ-120 * 30 type polystyrene extruders; the 3rd, SJ-150 * 30 type foam extrusion machines; the 4th, SFQ-400 type foaming and setting hauling machine; the 5th, SJ-90 * 30 type polyethylene extruders; the 6th, outer coating mould; the 7th, extrusion die; the 8th, the spraying cooling water groove; the 9th, SXG-400 type planet cut-off; form production line according to as directed configuration relation; steel pipe enters carries hauling machine 1; enter extrusion die 7; polystyrene raw material enters extrusion die 2; enter foam extrusion machine 3 again; enter extrusion die 7; enter foaming and setting hauling machine 4 then; the polyethylene raw material enters polyethylene extruder 5; enter then to come out from foaming and setting hauling machine 4; be coated with the outer coating mould 6 of the steel pipe of expanded polystyrene (EPS) heat-insulation layer; and then enter spraying cooling water groove 8, with the outer layer polyethylene cooling and shaping, be cut into the size and the stacking of fixed length again through planet cut-off 9; finish whole production technology; in order to produce the continuously extruding foam thermal-insulative piping material with polystyrene of nominal diameter 100mm, the steel pipe overall diameter is 108mm, thickness of steel pipe 5mm; the overall diameter of high density polyethylene protective coating is 200mm; thickness is 3.9mm, and the thickness of extruded polystyrene heat-insulation layer is 42.1mm continuously, and this Guan Michong is 14.59kg.
As change to the foregoing description:
1. the specifications and models of each unit of quoting of above-mentioned tinuous production, mould, device can suitably change;
2. the size of the specification of the tubing of being produced, employed raw-material specification and this product various piece also can suitably change.
Claims (3)
1. continuously extruding foam thermal-insulative piping material with polystyrene production method is characterized in that it is made of following technology:
Extruding continuously of foamed polystyrene layer: polystyrene raw material (11) is through automatical feeding system (14), add in the drying hopper (15) of polystyrene extruder (2), through after the removal moisture drying by the screw rod extrusion plasticizing, polystyrene after the plasticizing is supplied with foam extrusion machine (3), simultaneously blowing agent (16) is added in the extruder, through the abundant mixing and the extruding of foam extrusion machine screw rod, clamp-on extrusion die (7) at last, here be compound on the outer wall of steel pipe (10); Extruding continuously of high-density polyethylene layer: high density polyethylene (HDPE) raw material (12) adds in the drying hopper (18) of high density polyethylene (HDPE) extruder (5) through raw material automatical feeding system (17), through behind the desiccant dehumidification, screw rod extrusion plasticizing by high density polyethylene (HDPE) extruder (5), high density polyethylene (HDPE) material after the plasticizing is supplied with outer coating mould (6), here is compound on the foamed polystyrene heat-insulation layer of steel pipe (10) outside (22); Steel pipe (10) is composite foamed with middle foamed polystyrene heat-insulation layer (22) and outer high density polyethylene protective coating (33); apply: will be through rust cleaning; the steel pipe of oil removal treatment (10) is by delivery platform (13); being transported to one by one carried in the hauling machine (1); by carry hauling machine (1) eject active force continuous offer extrusion die (7); here; steel pipe (10) is compound to foamed polystyrene layer (22); and finish foaming process in the passage in foaming and setting hauling machine (4); said foaming and setting hauling machine (4) by crawler belt module up and down to synthetic columniform passage; this passage is at the uniform velocity mobile; make the continuous formation of foamed polystyrene layer (22) and be coated on the inner layer steel pipe (10); and gradually by last; following crawler belt module cooling and typing; multiple tube be pulled and finalize the design after enter outer coating mould (6); extrude the compound outer high density polyethylene protective coating (33) that here continuously; and through the spraying cooling water groove (8) of back with the outer layer polyethylene cooling and shaping, pass through planet cut-off (9) again and be cut into fixed length.
2. continuously extruding foam thermal-insulative piping material with polystyrene product; it is characterized in that it is to be compounded with foamed polystyrene heat-insulation layer (22) according to the described polystyrene heat-preservation tubing of claim 1 production technology in steel pipe (10) outside, its outside is compounded with high density polyethylene protective coating (33) again.
3. the special equipment that uses in the production method of a continuously extruding foam thermal-insulative piping material with polystyrene, it is characterized in that it is a tinuous production, comprise: carry hauling machine (1), polystyrene extruder (2), foam extrusion machine (3), foaming and setting hauling machine (4), high density polyethylene (HDPE) extruder (5), outer coating mould (6), extrusion die (7), spraying cooling water groove (8) and 9 planet cut-offs (9), the employed equipment of described aforementioned production method, dispose accordingly according to following working procedure, steel pipe (10) enters through delivery platform (13) and carries hauling machine (1), enter extrusion die (7), polystyrene raw material (11) enters the drying hopper (15) of polystyrene extruder (2) through automatical feeding system (14), enter polystyrene extruder (2) then, enter foam extrusion machine (3) again, enter extrusion die (7), enter foaming and setting hauling machine (4) then, high density polyethylene (HDPE) raw material (12) enters polyethylene automatical feeding system (17), enter the drying hopper (18) of high density polyethylene (HDPE) extruder (5) then, enter high density polyethylene (HDPE) extruder (5), enter then to come out from foaming and setting hauling machine (4), be coated with the outer coating mould (6) of the steel pipe (10) of expanded polystyrene (EPS) heat-insulation layer (22), and then enter spraying cooling water groove (8) and planet cut-off (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100420817A CN1817614A (en) | 2006-01-15 | 2006-01-15 | Continuously extruding foam thermal-insulative piping material with polystyrene and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100420817A CN1817614A (en) | 2006-01-15 | 2006-01-15 | Continuously extruding foam thermal-insulative piping material with polystyrene and production thereof |
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| CN1817614A true CN1817614A (en) | 2006-08-16 |
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|---|---|---|---|
| CNA2006100420817A Pending CN1817614A (en) | 2006-01-15 | 2006-01-15 | Continuously extruding foam thermal-insulative piping material with polystyrene and production thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103832031A (en) * | 2014-03-17 | 2014-06-04 | 罗景明 | Foaming regeneration environment-friendly plastic sheet and preparation method thereof |
| CN105984099A (en) * | 2015-02-11 | 2016-10-05 | 四平市圣螺塑胶制品有限公司 | Production process for whole internal co-extrusion micro-foaming polyvinyl chloride (PVC) profile |
| CN107538718A (en) * | 2016-06-25 | 2018-01-05 | 绍兴仁通塑胶有限公司 | A kind of plastic pipe pipeline production line |
-
2006
- 2006-01-15 CN CNA2006100420817A patent/CN1817614A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103832031A (en) * | 2014-03-17 | 2014-06-04 | 罗景明 | Foaming regeneration environment-friendly plastic sheet and preparation method thereof |
| CN103832031B (en) * | 2014-03-17 | 2016-02-17 | 罗景明 | A kind of foaming regenerated environment protecting plastic sheet and preparation method |
| CN105984099A (en) * | 2015-02-11 | 2016-10-05 | 四平市圣螺塑胶制品有限公司 | Production process for whole internal co-extrusion micro-foaming polyvinyl chloride (PVC) profile |
| CN107538718A (en) * | 2016-06-25 | 2018-01-05 | 绍兴仁通塑胶有限公司 | A kind of plastic pipe pipeline production line |
| CN107538718B (en) * | 2016-06-25 | 2024-01-02 | 绍兴仁通塑胶有限公司 | Plastic pipeline production line |
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