CN103510168A - Drafting hot box device for ultra-high molecular weight polyethylene fibers - Google Patents
Drafting hot box device for ultra-high molecular weight polyethylene fibers Download PDFInfo
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- CN103510168A CN103510168A CN201210206604.2A CN201210206604A CN103510168A CN 103510168 A CN103510168 A CN 103510168A CN 201210206604 A CN201210206604 A CN 201210206604A CN 103510168 A CN103510168 A CN 103510168A
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Abstract
The invention belongs to the technical field of textile material equipment and discloses a drafting hot box device for ultra-high molecular weight polyethylene fibers. The drafting hot box device for the ultra-high molecular weight polyethylene fibers comprises a box body composed of an upper box body and a lower box body. A drafting chamber and a circulation air duct are arranged in the box body, wherein the inner surface of the drafting chamber is covered with a multi-hole core material structure. One end of the drafting chamber is a strand inlet and an air inlet and the other end of the drafting chamber is a strand outlet and an air outlet. A fan, a cooling fin heating pipe and a high-efficiency air supplying port are arranged in the air duct. One side of the box body is provided with 3-6 box body side doors capable of being opened. Thermal insulation material layers are arranged in the upper box body, the lower box body and the box body side doors. The drafting hot box device for the ultra-high molecular weight polyethylene fibers can improve the heat efficiency, guarantee that strands are drafted under the conditions of even temperature and non-perturbation, improve the evenness of the fiber number and effectively reduce the frequency of occurrence of broken filaments and broken ends, and therefore the quality and the finished product rate of the finished fibers are improved.
Description
Technical field
The present invention relates to the drafting heat box that a kind of spinning industry is used, be especially applied in the production of superhigh molecular weight polyethylene fibers.
Background technology
Superhigh molecular weight polyethylene fibers is the fiber that a class has height-oriented extended-chain configuration, is one of important new material supporting world's new high-tech industry, with carbon fiber, aramid fiber and be called three large tec fibers.Because of its have that intensity is high, modulus is high, quality is light, fast light strong, abrasion resistance is high, energy absorption and the feature such as damping capacity is superior, in advanced lightweight composite, demonstrate great advantage, main application is to replace iron and steel, alloy, in field of aerospace, military field, there is irreplaceable effect, relate to the sensitive material of national security.Can be widely used in the fields such as military equipment, space flight navigation, security protection, extraordinary building, fishery, shipbuilding industry, there are very good market prospects.
Mostly superhigh molecular weight polyethylene fibers suitability for industrialized production is to adopt gel spinning-super drawing technology at present.Gel spinning makes large molecule in solution in low entanglement state, after spinning moulding, by quenching, make the large molecule in dynamic analysis of spinning substantially keep this low entanglement state, but because of its structure still unstable, from supramolecular structure, large molecular order is lower, must make its post forming through following process, improve the physics-mechanical performance of fiber.And only have through high power hot-stretch, the large molecule of polyethylene could be unfolded and stretch along draw direction, and macromolecular orientation and crystallization degree improve, thereby make macromolecular chain be changed and give fiber very excellent mechanical property to extended-chain configuration by original folded chain.The master operation of high power hot-stretch is exactly drafting process.In drafting process, first make the aggregation that presents large platelet be decomposed into the slightly platelet accumulation of orientation, platelet is conciliate and is twined along draw direction rotation subsequently, finally causes the microfibrillar structure of extended chain crystallization to form.Stretching in drafting process can make strand chain segment orientation, and the high temperature that drafting heat box provides can make strand be orientated, and finally improves degree of crystallinity and the degree of orientation of fiber, improves the performance of fiber.
In the prior art, superhigh molecular weight polyethylene fibers be stretched as hot-stretch, as-spun fibre is among air surrounds, it is mainly in drafting heat box, to rely on the heat transmission between air dielectric and heater to realize that fiber is heated.At present drafting heat box mainly adopts hot air circulating system to provide heat energy for fiber, and drafting heat box chamber is the metal material of common heat transfer, because of circulated air and drawing-off chamber have an effect after wind direction can change, cause wind field disorder.Circulated air through drawing-off chamber in the process of fiber heating because circulated air can to precursor and drawing-off chamber be had an effect and transferring heat, can make precursor in chamber, occur to vibrate and there is temperature unbalanced phenomena and produce lousiness, broken end and thread quality wild effect.Heating arrangement is common case structure electric heater, and gas easily forms gas stagnant area at the place, dead angle of casing, has a strong impact on the efficiency of heating surface, waste thermal energy consumption.Can cause because of expanding with heat and contract with cold in air channel pipe deforming even reveal, circulated air can not impact the moulding of equipment and tow, outward appearance because not passing through purified treatment entrained impurity when tow is heated simultaneously.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of drafting heat box device for superhigh molecular weight polyethylene fibers traction sizing use, its thermal efficiency is high, uniformity of temperature profile, circulated air is clean, little and the distributing equilibrium to tow disturbance, can effectively prevent that the pipe deforming causing owing to expanding with heat and contract with cold from even revealing, guarantee fibre bundle drawing-off at the temperature of even constant cleaning, thereby improved the performance of finished fiber, yield rate and stability, reduced workman's labour intensity and frequently opened thermal loss that hot case causes and inhomogeneous because processing the broken end of lousiness in hot case.
Technical solution of the present invention:
Use a drafting heat box device, it is characterized in that: it comprises the casing being comprised of upper box and lower box, in casing, establish drawing-off chamber and circulation air path that inner surface covers porous material structure; Drawing-off Shi one end is tow entrance and air inlet, and the other end is tow outlet and air outlet; In circulation air path, be provided with blower fan, expansion joint, cylinder efficient heating device and efficient air distributor; One side of casing be provided with the casing side door that can open several, in upper box and lower box and casing side door, establish insulation material layer.
In above-mentioned circulation air path, adopt novel cylinder efficient heating device.
Above-mentioned porous material is bi-dimensional cellular porous metal material, and its material is the metals such as bronze, nickel, alloy, stainless steel, titanium, aluminium; Its micro-structural can be equilateral triangle honeycomb, square honeycomb, regular hexagon honeycomb, the combination cellular Kagome structure that is comprised of regular hexagon honeycomb and equilateral triangle honeycomb etc., preferably regular hexagon honeycomb, Kagome honeycomb micro-structural.
Above-mentioned efficient air distributor adopt there is voltage stabilizing, shunting, filtration integrated structure.
Employing can effectively prevent that the pipe deforming causing owing to expanding with heat and contract with cold from even revealing expansion joint in above-mentioned circulation air path.
Technological merit of the present invention is:
1. the present invention adopts novel cylinder efficient heating device, adopt columnar new-type heater, there is no square dead angle, gas communication is smooth and easy, have quick heating, heating evenly, the advantage such as high, the long service life of perfect heat-dissipating, the thermal efficiency, the stability of circulated air heating is increased substantially.Add thermal recovery integral heater, directly insert cylinder, two ends are fixed with flange.Easily installation and removal, easy maintenance and replacement.
2. drawing-off chamber inner surface of the present invention covers porous core, when circulated air passes through porous material, can uniform distribution air quantity, can make part circulated air change laminar flow into by turbulent flow,, thus make the circulated air distributed uniform through tow, thereby can because wind direction is disorderly, not make tow that vibration occurs and produce lousiness and broken end, the quality of impact silk,, reduce labor strength and frequently open thermal loss that hot case causes and inhomogeneous because processing lousiness broken end in hot case.Simultaneously, because porous material is for a long time under circulated air effect, temperature reaches assigned temperature constant temperature, makes drafting heat box temperature even, and tow drawing-off at uniform and stable temperature can guarantee to produce high-quality fiber.
The present invention adopt there is voltage stabilizing, efficient air distributor that shunting, air quantity regulated, were filtered into one, simple in structure, and the effective entrained impurity of filtration cycle wind, raising fiber quality.
4. the present invention has added an expansion joint on air channel, can effectively prevent that like this pipe deforming causing owing to expanding with heat and contract with cold from even revealing.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention drafting heat box.
In figure, 1-upper box, 2-lower box, 3-porous material, 4-drawing-off chamber, 5-casing side door, 6-tow entrance, the outlet of 7-tow, 8-expansion joint, 9-air inlet, 10-air outlet, 11-circulation air path, 12-blower fan, 13-cylinder efficient heating device, 14-efficient air distributor.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention will be further described.
Embodiment
Superhigh molecular weight polyethylene fibers described in the present embodiment drafting heat box device, as shown in Figure 1, its casing is comprised of upper box 1 and lower box 2, establishes drawing-off chamber 4 and circulation air path 11 in casing; One end of drawing-off chamber 4 is tow entrance 6 and air inlet 9, and the other end is tow outlet 7 and air outlet 10; In circulation air path 11, be provided with blower fan 12, expansion joint 8, novel cylinder efficient heating device 13 and efficient air distributor 14; A side of casing be provided with the casing side door 5 that can open several, in upper box 1 and lower box 2 and casing side door 5, establish insulation material layer.
Above-mentioned drawing-off chamber 4 inner surfaces are comprised of porous metal material, this porous material 3 is bi-dimensional cellular shape porous material, its micro-structural can be equilateral triangle, square, regular hexagon, Kagome network (combination cellular being comprised of regular hexagon honeycomb and equilateral triangle honeycomb) etc., preferably regular hexagon, Kagome micro-structural.Because porous material inside has a large amount of holes, make porous metal material have the characteristic of many excellences, specific area is large, energy absorption good, heat exchange heat-sinking capability is high, sound absorption property is good, permeability is excellent, high temperature resistant.Can be used for controlling the flow velocity of gas and flowing, can make turbulent flow change laminar flow into, be conducive to 3 D complex and flow, overcome the adverse effect in boundary layer.Drawing-off chamber 4 inner surfaces adopt porous materials 3, can overcome circulated air and directly produce with the effect of drawing-off chamber to reflect and make the indefinite problem of wind direction, make disorderly circulated air become Laminar Flow; When circulated air enters drawing-off chamber, the even action by porous material be distributed in whole fibre bundle surface, guarantee that tow do not shake in drawing-off chamber; Simultaneously, because porous material is for a long time under circulated air effect, temperature reaches assigned temperature constant temperature, makes drafting heat box temperature even, and tow drawing-off at uniform and stable temperature can guarantee to produce high-quality fiber.
Above-mentioned novel cylinder efficient heating device 13 is positioned at circulation air path 11, between blower fan 12 and efficient air distributor 14, from blower fan 12 circulated air out, through there is no the columnar new-type heater at square dead angle, gas communication is smooth and easy, and the efficiency of heating surface is high, homogeneous heating.Add thermal recovery integral heater, directly insert cylinder, two ends are fixed with flange.Easily installation and removal, easy maintenance and replacement.
Above-mentioned casing side door 5, is positioned at lower box 2 upper ends, and side door number is about 3-6.Side door door-plate heat-barrier material is made, and replaceable high-temperature silica gel sealing ring is set.When tow, by drafting heat box and tow, fracture occurs when side door is convenient to drawing-off, manually connect a use, because this side door is adjacent one by one, when opening, for opening one by one, reduced and opened external thermal loss of moment.
Above-mentioned efficient air distributor 14 is positioned at circulation air path 11, circulated air import department, the built-in plenum chamber of this efficient air distributor, diffuser plate, volume damper, heat-insulation layer and high efficiency particulate air filter, this efficient air distributor 14 integrates voltage stabilizing, shunting, filtration insulation, and can select suitable air outlet according to Air Quantity Required.Circulated air through efficient air distributor steadily, evenly send, and effectively filters impurity, has prevented that impurity is on the infringement of equipment and the impact on wire-beam forming and outward appearance.
Claims (5)
1. a superhigh molecular weight polyethylene fibers drafting heat box device, is characterized in that: it comprises the casing being comprised of upper box and lower box, establishes drawing-off chamber and circulation air path that inner surface covers porous material structure in casing; Drawing-off Shi one end is tow entrance and air inlet, and the other end is tow outlet and air outlet; In circulation air path, be provided with blower fan, expansion joint, cylinder efficient heating device and efficient air distributor; One side of casing be provided with the casing side door that can open several, in upper box and lower box and casing side door, establish insulation material layer.
2. drafting heat box device according to claim 1, is characterized in that cylinder efficient heating device adopts integral heater, directly inserts cylinder, and two ends are fixed with flange.
3. drafting heat box device according to claim 1, it is characterized in that porous material structure is bi-dimensional cellular porous metal material structure, the combination cellular Kagome structure that its micro-structural is equilateral triangle honeycomb, square honeycomb, regular hexagon honeycomb, be comprised of regular hexagon honeycomb or equilateral triangle honeycomb.
4. drafting heat box device according to claim 3, is characterized in that Microstructures of Cellular Materials is regular hexagon honeycomb, Kagome honeycomb micro-structural.
5. drafting heat box device according to claim 1, it is characterized in that efficient air distributor adopt there is voltage stabilizing, structure that shunting, air quantity regulated, were filtered into one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210206604.2A CN103510168A (en) | 2012-06-21 | 2012-06-21 | Drafting hot box device for ultra-high molecular weight polyethylene fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210206604.2A CN103510168A (en) | 2012-06-21 | 2012-06-21 | Drafting hot box device for ultra-high molecular weight polyethylene fibers |
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| CN103510168A true CN103510168A (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210206604.2A Pending CN103510168A (en) | 2012-06-21 | 2012-06-21 | Drafting hot box device for ultra-high molecular weight polyethylene fibers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921422A (en) * | 2021-01-20 | 2021-06-08 | 中国纺织科学研究院有限公司 | Hot box for drawing yarns |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5702657A (en) * | 1994-12-27 | 1997-12-30 | Nippon Oil Co., Ltd. | Method for the continuous production of a polyethylene material having high strength and high modulus of elasticity |
| CN201077870Y (en) * | 2007-08-29 | 2008-06-25 | 山东爱地高分子材料有限公司 | Ultra-high molecular mass northylen drafting heat box |
| CN201099710Y (en) * | 2007-09-29 | 2008-08-13 | 盐城市宏达纺织器材有限公司 | High modulus high-strength polyethylene fiber drafting machine |
| CN101967691A (en) * | 2010-09-21 | 2011-02-09 | 中国科学院宁波材料技术与工程研究所 | Hot drafting method for ultra-high molecular weight polyethylene strands |
| CN201809490U (en) * | 2010-09-28 | 2011-04-27 | 青岛华世洁环保科技有限公司 | Novel high-strength high-modulus polyethylene fiber drafting hot box |
| CN202830251U (en) * | 2012-06-21 | 2013-03-27 | 中国石油化工股份有限公司 | Drafting hot box device for ultra high molecular weight polyethylene fiber |
-
2012
- 2012-06-21 CN CN201210206604.2A patent/CN103510168A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5702657A (en) * | 1994-12-27 | 1997-12-30 | Nippon Oil Co., Ltd. | Method for the continuous production of a polyethylene material having high strength and high modulus of elasticity |
| CN201077870Y (en) * | 2007-08-29 | 2008-06-25 | 山东爱地高分子材料有限公司 | Ultra-high molecular mass northylen drafting heat box |
| CN201099710Y (en) * | 2007-09-29 | 2008-08-13 | 盐城市宏达纺织器材有限公司 | High modulus high-strength polyethylene fiber drafting machine |
| CN101967691A (en) * | 2010-09-21 | 2011-02-09 | 中国科学院宁波材料技术与工程研究所 | Hot drafting method for ultra-high molecular weight polyethylene strands |
| CN201809490U (en) * | 2010-09-28 | 2011-04-27 | 青岛华世洁环保科技有限公司 | Novel high-strength high-modulus polyethylene fiber drafting hot box |
| CN202830251U (en) * | 2012-06-21 | 2013-03-27 | 中国石油化工股份有限公司 | Drafting hot box device for ultra high molecular weight polyethylene fiber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921422A (en) * | 2021-01-20 | 2021-06-08 | 中国纺织科学研究院有限公司 | Hot box for drawing yarns |
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Application publication date: 20140115 |