CN204403609U - A kind of steel plastic compount screw thread bellows - Google Patents

A kind of steel plastic compount screw thread bellows Download PDF

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Publication number
CN204403609U
CN204403609U CN201420781744.7U CN201420781744U CN204403609U CN 204403609 U CN204403609 U CN 204403609U CN 201420781744 U CN201420781744 U CN 201420781744U CN 204403609 U CN204403609 U CN 204403609U
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steel
layer
plastic
screw thread
bellows
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CN201420781744.7U
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周成纤
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Kang Mingyuan (Guizhou) Technology Development Co., Ltd.
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周成纤
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Abstract

The utility model relates to a kind of steel plastic compount screw thread bellows, the outside worm structure in wave shape of this steel plastic compount screw thread bellows, the crest of this steel plastic compount screw thread bellows is disposed with plastic outer layer, the first adhesive layer, steel belt layer, the second adhesive layer, reinforcing layer, inner plastic from outside to inside.Steel plastic compount screw thread bellows anti-pressure ability of the present utility model is strong, and pipe ring stiffness is high: because adopting steel plastic compount and polyethylene or polypropylene reinforcing layer solid construction, therefore, can significantly improve the anti-pressure ability of tubing, ring stiffness can reach more than 16kN/ ㎡.Steel plastic compount screw thread bellows corrosion resistance of the present utility model is good: steel band is coated through layer by layer, and other arbitrary substance cannot leak into steel band at all, protects steel band greatly, guarantees not to be corroded.

Description

A kind of steel plastic compount screw thread bellows
Technical field
The utility model relates to a kind of screw thread bellows, is specifically related to a kind of steel plastic compount screw thread bellows.
Background technique
The hot entwining tube of existing HDPE structural walls (carat pipe), there is following shortcoming: one, tubing cost is high: because it is overall plastic material, when reaching certain ring stiffness, its material consumption significantly increases, in addition the price of plastic material itself is just somewhat expensive, so compound material cost is higher, than general steel-plastic composite pipe height about more than 30%.Its two, cannot ultra-large caliber pipe material be produced: because of overall plastic material, produce heavy caliber pipe time, its compression resistance become 3 word sides decline, therefore, cannot produce more than more than 3 meters caliber pipe materials, this is the major limitation of this product.Its three, pipe ring stiffness is lower: because being overall plastic material, and by the impact that plastics themselves bend modulus is less, its compression resistance is lower, and ring stiffness is generally 8kN/ about ㎡.
Existing buried draining steel band enhanced polyethylene (PE) helical bellows, there is following shortcoming: one, ring stiffness is low: though tubing have employed steel plastic compount mode, but because of structural imperfection, for falling " U " shape hollow in its waveform, compressive strength still has deficiency, within being generally 12.5kN/ ㎡.They are two years old, corrosion resistance is poor: though steel band has through surface plastic coating process, but because coating layer itself is thinner, be generally about 1mm, in production process or engineer applied, flowing into it for falling in the waveform of " U " shape hollow structure if any water, after certain hour, very easily causing coating layer to be separated with steel band, finally cause steel band to corrode, cause engineering accident.Its three, it is poor that covering property each other moulded by steel: because of fall " U " shape hollow waveform configuration, steel band has the area of nearly 40% not coated by plastic layer, cause when being subject to external force, the transmission of power is uneven, easily produces stress raisers, thus destruction pipeline, cause engineering accident.They are four years old, environmental suitability is poor: because falling " U " shape hollow waveform configuration, steel is moulded entirely not coated, be subject under ambient temperature impact, entirely not coated one side, easily produce because expanding with heat and contract with cold steel mould between separation, thus destroy the enhancing effect of steel band, and greatly reduce plastic layer to the corrosion-resisting function of steel band.Its five, working life is shorter: because of structural imperfection, does not overcome the problem of steel plastic compount preferably, occurs that segregation phenomenon moulded by steel after tubing certain hour through often, and working life is generally at about 10 years.
Model utility content
The utility model object is to provide a kind of steel plastic compount screw thread bellows and manufacture method thereof, and to overcome in prior art, helical bellows ring stiffness is low, corrosion resistance is poor, the problem that covering property is each other poor, working life is shorter moulded by steel.
The utility model adopts following technological scheme: a kind of steel plastic compount screw thread bellows, the outside of this steel plastic compount screw thread bellows is shape of threads, the screw thread of the outside projection of this steel plastic compount screw thread bellows is crest, outside this steel plastic compount screw thread bellows, the position of relatively described crest depression is trough, the crest of this steel plastic compount screw thread bellows is disposed with plastic outer layer from outside to inside, first adhesive layer, steel belt layer, second adhesive layer, reinforcing layer, inner plastic, the cross section of this plastic outer layer is in falling " U " font, the sectional shape of this steel belt layer is in falling " U " font, this steel belt layer is bonding by described first adhesive layer with described plastic outer layer, the sectional shape of described reinforcing layer and the sectional shape of described steel belt layer suitable, and this reinforcing layer is clogged in " U " font that described steel belt layer is formed, this reinforcing layer is bonding with described steel belt layer by the second adhesive layer, the bottom of this reinforcing layer is connected with described inner plastic.
Preferably, the trough of this steel plastic compount screw thread bellows comprises described plastic outer layer and described inner plastic, and this plastic outer layer is connected with described inner plastic.
Preferably, described reinforcing layer is polyethylene reinforcing layer or polypropylene reinforcing layer.
Preferably, described plastic outer layer is outer layer of polyethene or outer layer of polypropylene.
Preferably, described inner plastic is polyethylene inner layer or inner layer of polypropylene.
The above-mentioned description to the utility model structure and method is known, compared to the prior art, the utility model tool has the following advantages: one, steel plastic compount screw thread bellows anti-pressure ability of the present utility model is strong, pipe ring stiffness is high: because adopting steel plastic compount and polyethylene or polypropylene reinforcing layer solid construction, therefore, can significantly improve the anti-pressure ability of tubing, ring stiffness can reach more than 16kN/ ㎡.They are two years old, steel plastic compount screw thread bellows good-toughness of the present utility model: adopt polyethylene or polypropylene plastics, the feature of their good toughness utilized admirably, its specific elongation can reach more than 300%, cryogenic property is good simultaneously, normally can use under-20 DEG C of conditions.Its three, steel plastic compount screw thread bellows corrosion resistance of the present utility model is good: steel band is coated through layer by layer, and other arbitrary substance cannot leak into steel band at all, protects steel band greatly, guarantees not to be corroded.They are four years old, the pipe internal stress of steel plastic compount screw thread bellows of the present utility model is little: compare other steel and mould class composite pipe, steel plastic compount helical bellows is because of plastics and steel band Full connected, hollow is not had in ripple, therefore the covering property of plastics and steel band is better, when being subject to external force, can forming good steel and moulding acting in conjunction, uniformly power is passed to each construction layer, greatly overcome the problem of stress concentration of steel band and plastics.They are five years old, tubing good environmental adaptability: compare other steel and mould class composite pipe, because of steel band by buried enter in plastic layer, good with the compatibility of plastics, be subject under the impact of external environment temperature, steel band can produce corresponding displacement as much as possible with expanding with heat and contract with cold of plastics, and not like other steel-plastic composite pipe, because the area of the nearly half of steel band is not coated, cause and be subject under the impact of external environment temperature, invar moulds the difference of shrinkage, easily cause steel to mould and produce break-off after expanding with heat and contract with cold for a long time, the enhancing effect of steel band is significantly reduced, the antisepsis of plastic layer to steel band also greatly declines simultaneously.They are six years old, steel plastic compount screw thread bellows cost of the present utility model is low: relative to full-plastic tube, steel plastic compount helical bellows is because employing steel belt layer, when reaching identical ring stiffness, the materials'use amount of tubing can obviously decline (for the tubing of DN800 ring stiffness for 16kN/ ㎡, steel plastic compount helical bellows rice is heavily about 35kg/m), simultaneously, compare plastics, steel band is also less expensive, therefore overall cost can decline more than 40%, and full-plastic tube best in the market, entwining tube as hot in HDPE structural walls (carat pipe), because it all uses plastics, the flexural modulus of material is lower, therefore material consumption significantly strengthens, its DN800 ring stiffness is that the Guan meter Chong of 8kN/ ㎡ about needs more than 60kg/m, and it is more expensive that the price of plastic materials compares steel band, therefore, overall cost greatly improves.Its seven, the utility model can produce the steel plastic compount screw thread bellows of super large caliber: because of effective application of steel band, production ultra-large caliber pipe material in, still can guarantee the ring stiffness of tubing, meet the requirement of some key project.They are eight years old, steel plastic compount screw thread bellows long service life of the present utility model: tubing overall structure is excellent, combines the feature of steel band and plastics admirably, greatly overcomes its respective birth defect, make the performance of plastics and steel band obtain organic unity, the working life of tubing can reach more than 50 years.
Accompanying drawing explanation
Fig. 1 is steel plastic compount screw thread bellows sectional structure schematic diagram of the present utility model, and the portions of steel plastic compount screw thread bellows is only shown in figure.
Fig. 2 is the structure for amplifying schematic diagram of A in Fig. 1.
Fig. 3 is the crest decomposition texture schematic diagram of steel plastic compount screw thread bellows of the present utility model.
Embodiment
Embodiment of the present utility model is described with reference to the accompanying drawings.
See figures.1.and.2, a kind of steel plastic compount screw thread bellows, the outside of this steel plastic compount screw thread bellows is shape of threads, the screw thread of the outside projection of this steel plastic compount screw thread bellows is crest 1, the position that outside this steel plastic compount screw thread bellows, relatively described crest 1 caves in is trough 2, and the crest 1 of this steel plastic compount screw thread bellows is disposed with plastic outer layer 10, first adhesive layer 11, steel belt layer 12, second adhesive layer 13, reinforcing layer 14, inner plastic 15 from outside to inside.The cross section of this plastic outer layer 10 is in falling " U " font, and the sectional shape of this steel belt layer 12 is in falling " U " font.Steel belt layer 12 is bonding by the first adhesive layer 11 with plastic outer layer 10.The sectional shape of reinforcing layer 14 and the sectional shape of steel belt layer 12 suitable, and this reinforcing layer 14 clogs falling in " U " font of being formed in steel belt layer 12.This reinforcing layer 14 is bonding with steel belt layer 12 by the second adhesive layer 13, and the bottom of this reinforcing layer 14 is connected with inner plastic 15.
See figures.1.and.2, the trough 2 of steel plastic compount screw thread bellows comprises two layers of plastic outer 10 and two layers of plastic internal layer 15, and this plastic outer layer 10 superposes mutually with inner plastic 15.Reinforcing layer 14 is polyethylene reinforcing layer or polypropylene reinforcing layer.Plastic outer layer 10 is outer layer of polyethene or outer layer of polypropylene.Inner plastic 15 is polyethylene inner layer or inner layer of polypropylene.
A manufacture method for steel plastic compount screw thread bellows, this manufacture method comprises the following steps:
The first, produce plastic-coated steel band, comprise the following steps:
A. the adhesive with resistance oxygen and antiseptic property is carried out melting at the temperature of 160 ~ 230 DEG C;
B. to the steel band of plastic-coated 200 ~ 300 DEG C will be heated to and be incubated, steel band entirety is heated evenly, guarantees good plastic-coated adhesive effect;
C. adhesive is applied uniformly steel strip surface after the heating;
D. be that the cooling water of 30 ~ 60 DEG C carries out cooling down to the Clad Steel band through coating processing by temperature;
E. by steel band good for plastic-coated with the speed of 0.5 ~ 8m/min pulling out at the uniform velocity.
F. coated Clad Steel tep reel is become web-like.
The second, produce reinforcing layer 14, comprise the following steps:
A. polyethylene or PP GRANULES are carried out melting at the temperature of 170 ~ 250 DEG C.
B. polyethylene or melt polypropylene are formed the shape of reinforcing layer by mould.
C. polyethylene or polypropylene reinforcing layer are carried out cooling and shaping by the cooling water that shaping cover and temperature are 30 ~ 60 DEG C, make it cooling curing.
D. by polyethylene or polypropylene reinforcing layer with the speed of 0.5 ~ 8m/min pulling out at the uniform velocity.
E. polyethylene good for cooling and shaping or polypropylene reinforcing layer dish are become web-like.
3rd, manufacture steel plastic compount screw thread bellows, comprise the following steps:
(1) plastic-coated steel band is molded into waveform configuration, the Clad Steel belt surface of forming is heated to 120 ~ 180 DEG C;
(2) polyethylene or polypropylene reinforcing layer are heated to 150 ~ 220 DEG C, and the polyethylene after the plastic-coated steel band after heating and heating or polypropylene reinforcing layer are combined into steel plastic compount reinforcing layer, and be bent to form circle shape by Bending machines;
(3) polyethylene or inner layer of polypropylene extruded and draw on upper Stetch Wrapping Machine, and making it to become spiral progressive motion with Stetch Wrapping Machine, forming the internal layer of tubing;
(4) introduce Stetch Wrapping Machine after the steel plastic compount reinforcing layer forming circle shape being heated to 150 ~ 220 DEG C, and be combined with each other with polyethylene or inner layer of polypropylene;
(5) polyethylene extrusion or outer layer of polypropylene, be coated on the steel plastic compount reinforcing layer and polyethylene or inner layer of polypropylene that have been closely linked, by the spiral motion of Stetch Wrapping Machine, polyethylene or outer layer of polypropylene, steel plastic compount reinforcing layer, polyethylene or inner layer of polypropylene are closely combined with each other the most at last; Polyethylene or outer layer of polypropylene are by after spiral winding, and the tubing peak-to-peak polyethylene of adjacent two ripple or outer layer of polypropylene superpose the outer section forming tubing trough mutually, and the outer section of tubing trough and the inner stacks of described tubing are added together;
(6) by each layer cooling curing after compound, final steel plastic compount helical bellows is formed.
Steel plastic compount screw thread bellows anti-pressure ability of the present utility model is strong, pipe ring stiffness is high: because adopting steel plastic compount, (flexural modulus of steel can reach about 200Gpa to the high feature of the flexural modulus of steel, and polyethylene or polyacrylic flexural modulus are about about 1Gpa), effectively improve steel plastic compount screw thread bellows anti-pressure ability.Adopt polyethylene or polypropylene reinforcing layer solid construction, because corrugated thread is interior reinforcement solid construction, therefore, can significantly improve the anti-pressure ability of tubing, ring stiffness can reach more than 16kN/ ㎡.Steel plastic compount screw thread bellows good-toughness of the present utility model: adopt polyethylene or polypropylene plastics, the feature of their good toughness utilized admirably, its specific elongation can reach more than 300%, cryogenic property is good simultaneously, normally can use under-20 DEG C of conditions.Steel plastic compount screw thread bellows corrosion resistance of the present utility model is good: steel band is coated through layer by layer, and other arbitrary substance cannot leak into steel band at all, protects steel band greatly, guarantees not to be corroded.The pipe internal stress of steel plastic compount screw thread bellows of the present utility model is little: compare other steel and mould class composite pipe, steel plastic compount helical bellows is because of plastics and steel band Full connected, corrugated thread does not have hollow, therefore the covering property of plastics and steel band is better, when being subject to external force, good steel can be formed and mould acting in conjunction, uniformly power be passed to each construction layer, greatly overcome the problem of stress concentration of steel band and plastics.Tubing good environmental adaptability: compare other steel and mould class composite pipe, because of steel band by buried enter in plastic layer, good with the compatibility of plastics, be subject under the impact of external environment temperature, steel band can produce corresponding displacement as much as possible with expanding with heat and contract with cold of plastics, and not like other steel-plastic composite pipe, because the area of the nearly half of steel band is not coated, cause and be subject under the impact of external environment temperature, invar moulds the difference of shrinkage, easily cause steel to mould and produce break-off after expanding with heat and contract with cold for a long time, the enhancing effect of steel band is significantly reduced, the antisepsis of plastic layer to steel band also greatly declines simultaneously.Steel plastic compount screw thread bellows cost of the present utility model is low: relative to full-plastic tube, steel plastic compount helical bellows is because employing steel belt layer, when reaching identical ring stiffness, the materials'use amount of tubing can obviously decline (for the tubing of DN800 ring stiffness for 16kN/ ㎡, steel plastic compount helical bellows rice is heavily about 35kg/m), simultaneously, compare plastics, steel band is also less expensive, therefore overall cost can decline more than 40%, and full-plastic tube best in the market, entwining tube as hot in HDPE structural walls (carat pipe), because it all uses plastics, the flexural modulus of material is lower, therefore material consumption significantly strengthens, its DN800 ring stiffness is that the Guan meter Chong of 8kN/ ㎡ about needs more than 60kg/m, and it is more expensive that the price of plastic materials compares steel band, therefore, overall cost greatly improves.The utility model can produce the steel plastic compount screw thread bellows of super large caliber: because of effective application of steel band, when production ultra-large caliber pipe material, still can guarantee the ring stiffness of tubing, meet the requirement of some key project.Steel plastic compount screw thread bellows long service life of the present utility model: tubing overall structure is excellent, combine the feature of steel band and plastics admirably, greatly overcome its respective birth defect, make the performance of plastics and steel band obtain organic unity, the working life of tubing can reach more than 50 years.
Above are only embodiment of the present utility model, but design concept of the present utility model is not limited thereto, all changes utilizing this design the utility model to be carried out to unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims (5)

1. a steel plastic compount screw thread bellows, it is characterized in that: the outside of this steel plastic compount screw thread bellows is shape of threads, the screw thread of the outside projection of this steel plastic compount screw thread bellows is crest, outside this steel plastic compount screw thread bellows, the position of relatively described crest depression is trough, the crest of this steel plastic compount screw thread bellows is disposed with plastic outer layer from outside to inside, first adhesive layer, steel belt layer, second adhesive layer, reinforcing layer, inner plastic, the cross section of this plastic outer layer is in falling " U " font, the sectional shape of this steel belt layer is in falling " U " font, this steel belt layer is bonding by described first adhesive layer with described plastic outer layer, the sectional shape of described reinforcing layer and the sectional shape of described steel belt layer suitable, and this reinforcing layer is clogged in " U " font that described steel belt layer is formed, this reinforcing layer is bonding with described steel belt layer by the second adhesive layer, the bottom of this reinforcing layer is connected with described inner plastic.
2. according to a kind of steel plastic compount screw thread bellows according to claim 1, it is characterized in that: the trough of this steel plastic compount screw thread bellows comprises described plastic outer layer and described inner plastic, and this plastic outer layer is connected with described inner plastic.
3. according to a kind of steel plastic compount screw thread bellows according to claim 1, it is characterized in that: described reinforcing layer is polyethylene reinforcing layer or polypropylene reinforcing layer.
4., according to a kind of steel plastic compount screw thread bellows described in claim 1 or 2, it is characterized in that: described plastic outer layer is outer layer of polyethene or outer layer of polypropylene.
5., according to a kind of steel plastic compount screw thread bellows described in claim 1 or 2, it is characterized in that: described inner plastic is polyethylene inner layer or inner layer of polypropylene.
CN201420781744.7U 2014-12-11 2014-12-11 A kind of steel plastic compount screw thread bellows Active CN204403609U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104482329A (en) * 2014-12-11 2015-04-01 周成纤 Steel-plastic composite thread corrugated pipe and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104482329A (en) * 2014-12-11 2015-04-01 周成纤 Steel-plastic composite thread corrugated pipe and manufacturing method thereof
CN104482329B (en) * 2014-12-11 2017-05-03 周成纤 Steel-plastic composite thread corrugated pipe

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C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20180827

Address after: 561100 1, Longteng Road, Xia Yun Industrial Park, Pingba District, Anshun, Guizhou

Patentee after: Kang Mingyuan (Guizhou) Technology Development Co., Ltd.

Address before: 337018 Maple Bay 34, Qianjin village, Xianggang Town, Xiangdong District, Pingxiang, Jiangxi

Patentee before: Zhou Chengxian

TR01 Transfer of patent right