CN102688698B - Method and device for producing enhanced hollow fiber membrane - Google Patents
Method and device for producing enhanced hollow fiber membrane Download PDFInfo
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- CN102688698B CN102688698B CN201210160504.0A CN201210160504A CN102688698B CN 102688698 B CN102688698 B CN 102688698B CN 201210160504 A CN201210160504 A CN 201210160504A CN 102688698 B CN102688698 B CN 102688698B
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Abstract
The invention discloses a method for producing an enhanced hollow fiber membrane, which comprises (a) braiding a fiber rope to serve as an inner support for the hollow fiber membrane; (b) dragging the fiber rope to pass through a membrane casting solution while allowing the fiber rope to fully immerse in the membrane casting solution; (c) allowing the fiber rope to pass through an eyelet after leaving the membrane casting solution, and arranging a spherical body, with diameter larger than the diameter of the eyelet, in the tubular section of the fiber rope, and allowing the spherical body to abut against the eyelet by use of collection tension; (d) allowing the fiber rope to pass through a water tank after leaving the eyelet and solidify in the liquid, and sending the fiber rope out when the membrane casting solution on the surface of the fiber rope loses flowability; and (e) collecting. The invention also provides a device for producing the enhanced hollow fiber membrane by adopting the method. The invention can solve the problem of clogging of membrane filament due to material seepage in case of material solution with low viscosity, to ensure uniform penetration of the material solution into the inner and outer walls and improve the bonding force between the membrane layer and the support layer, and can solve the problem of non-round appearance.
Description
Technical field
The invention belongs to hollow-fibre membrane field, specifically, the present invention relates to a kind of production method of the enhancement type hollow fiber film with inner support and the device that forms a complete production network that is applicable to the method.
Background technology
The present stage embrane method more and more application at home of problem of disposing of sewage, the embrane method incomparable advantage of traditional handicraft of disposing of sewage, as fast in processing speed, processing accuracy is high.And the film that sewage disposal is used is also varied, existing film divides and has flat sheet membrane by shape, rolled film, and hollow-fibre membrane etc., forming method is divided into again dry method, wet method, thermic Xiang Fa etc.
The present invention is the forming method to enhancement type hollow fiber film, to get on the basis of wet method, existing wet method thin film-forming method mostly is measuring pump film extrusion, also have a small amount of company that comprises our company to utilize contacting between stay pipe and feed liquid, thereby frictionally will be coated on film forming on stay pipe under feed liquid band.
According to present stage document record, producer and research institution that all spinning inner supports strengthen hollow-fibre membrane all do not have method in inner support layer, to pass to core liquid, therefore the gel mode of casting solution can only be by outer and interior slow gel, when the viscosity of feed liquid is rarer or coating thickness is larger, be easy to the problem that occurs that film silk inner duct blocks.
Stay pipe after braiding lower whorl, if do not carry out thermal finalization processing outward appearance circle very, for the stay pipe outward appearance problem of rounding not, adopt thermal finalization to process more, increased heat treated power consumption cost.
While spinning inner support film at present, cannot use the casting solution that low viscosity casting solution solid content is low to carry out spinning, during due to the enhancement type hollow fiber film of current spinning inner support, film silk inside cannot lead to core liquid, so film silk can only ecto-entad gel, when casting solution viscosity is lower, easily there is the situations such as bleed or film silk internal diameter block.
Its inner support layer of inner support enhancement type hollow fiber film mostly is PET, glass fibre material, and the caking property of the bed of materials such as PVDF and supporting layer is generally poor.
For solving prior art above shortcomings, the present invention is proposed.
Summary of the invention
The object of the invention is the technical problem existing in order to overcome prior art, propose a kind of production method of the enhancement type hollow fiber film with inner support and the device that forms a complete production network that is applicable to the method.
For solving the problems of the technologies described above, realize object of the present invention, the invention provides a kind of production method of enhancement type hollow fiber film, comprise the steps:
A) cordage braiding, as the inner support of hollow-fibre membrane;
B) pull cordage by casting solution, cordage is immersed in casting solution completely;
C) cordage of leaving casting solution, by an eyelet, is placed an orbicule in cordage pipe, the diameter of orbicule is greater than the diameter of eyelet, utilizes collection pulling force to make orbicule prop up eyelet;
D) cordage of passing through eyelet, through a tank, is solidified, after the casting solution on cordage surface loses flowability, is sent in liquid;
E) collect.
The present invention also provides a kind of device that adopts said method to produce enhancement type hollow fiber film, comprise the wire-feed motor of conveying fiber rope, horizontal tank, the receipts silk machine of being disposed in order, in wire-feed motor, there is fiber roller, receive in silk machine and have wire drawing wheel, between wire-feed motor and horizontal tank, be also provided with a logical base coating device, logical base coating device comprises that one is equipped with the container of casting solution, is sequentially with wire feed guide wheel, thread pressing wheel, output guide wheel in container, and thread pressing wheel is pressed into the cordage of passing through in casting solution; The container other end is provided with one and holds the perforated metallic plate of tool that cordage is passed through, and in the pipeline section of cordage by eyelet eye, a sphere is housed, and the diameter of sphere is greater than the diameter of metallic plate eyelet.Laterally tank is connected with temperature control tank and EGR by pipeline.
The invention has the beneficial effects as follows: adopt after the film build method of this patent, can guarantee that film silk do not worry the problem that hollow-fibre membrane can block because of bleed when the feed liquid of using compared with sliminess yet, can guarantee that feed liquid evenly connects the inside and outside wall of supporting layer, guaranteeing, under the prerequisite that film silk does not block, can also to promote the adhesion of rete and supporting layer.And can solve the not problem of rounding of outward appearance.Wet spinning adopts the extrusion equipments such as measuring pump more at present, and its equipment cost and maintenance cost are all relatively high, and the present invention does not need the extrusion equipments such as measuring pump, reduces production costs; Present stage, because the gel mode of inner support type fortifying fibre film restricts, the viscosity of casting solution can not be too low, otherwise easily occur that casting solution penetrates into the situation that blocks film silk in stay pipe, and the thin film-forming method that the present invention adopts, the situation that blocks that can avoid stay pipe inside to cause due to bleed; Because adopt thin film-forming method of the present invention to coordinate solvent or diluent liquid to be spun into film silk, in stay pipe fiber, there is a little feed liquid to infiltrate again, can promote greatly the adhesion strength of rete and supporting layer.
Terminological interpretation:
Stay pipe: adopt the cordage braidings such as polyester, nylon to form, the hollow circular cylinder that similar shoestring is the same; What the stay pipe mentioned herein, cordage or inner support referred to is same object.
Casting solution: referring in the present invention can film forming, the macromolecular material of pore-forming is dissolved in corresponding organic solvent, the mixed liquor of formation, wherein casting solution can be the high molecular solution such as PVDF, PAN, PVC;
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the present invention and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention, wherein:
Fig. 1 is the overall structure schematic diagram of apparatus of the present invention;
Fig. 2 is the structural representation of logical base coating device in Fig. 1;
1. wire-feed motor in accompanying drawing, 2. fiber roller, 3. logical base coating device (3-1 guide wheel, 3-2 metal ball, 3-3 perforated metal plate, 3-4 casting solution), 4. horizontal tank, 5. controllable temperature aqua storage tank, 6. EGR, 7. pipeline, 8. wire drawing wheel, 9. a receipts silk machine.
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
With reference to accompanying drawing, the present invention is the enhancement type hollow fiber film process units of a set of employing moulding, be mainly used in the enhancement type hollow fiber film production phase, comprise the wire-feed motor 1 that is disposed in order conveying fiber rope, horizontal tank 4, receive silk machine 9, in wire-feed motor 1, there is fiber roller 2, receive in silk machine 9 and have wire drawing wheel 8, between wire-feed motor 1 and horizontal tank 4, be also provided with a logical base coating device 3, logical base coating device 3 comprises that one is equipped with the container 3-5 of casting solution 3-4, in container 3-5, be sequentially with wire feed guide wheel 3-6, thread pressing wheel 3-1, output guide wheel 3-7, thread pressing wheel 3-1 is pressed into the cordage of passing through 10 in casting solution 3-4, the container 3-5 other end is provided with one and holds the perforated metallic plate 3-3 of tool that cordage 10 is passed through, and a sphere 3-2 is housed in the pipeline section of cordage 10 by eyelet eye, and the diameter of sphere 3-2 is greater than the diameter of metallic plate 3-3 eyelet.Laterally tank 4 is connected with temperature control tank 5 and EGR 6 by pipeline 7.
In the present embodiment, be described as follows:
Wire-feed motor 1, has a fiber roller 2 in wire-feed motor 1, cordage 10 applies after upper casting solution by logical base coating device 3, and after horizontal tank 4, film silk, receiving under the traction of silk machine 9, is collected on wire drawing wheel 8.
In logical base coating device 3, cordage 10 is first pressed in casting solution 3-4 through guide wheel 3-1, cordage 10 is stretched under the effect of metal ball 3-2 that is slightly larger than cordage internal diameter afterwards, after through aperture, the perforated metal plate 3-3 between cordage and metal ball 3-2 size completes painting membrane process.
Wherein the liquid storage in horizontal tank 4, in controllable temperature aqua storage tank 5, is also squeezed into water in horizontal tank 4 by pipeline 7 through EGR 6, and is flow back in controllable temperature aqua storage tank 5 through another pipeline 7, completes circulation.
Production method of the present invention is as follows:
A) cordage braiding, as the inner support of hollow-fibre membrane;
B) pull cordage by casting solution, cordage is immersed in casting solution completely;
C) cordage of leaving casting solution, by an eyelet, is placed an orbicule in cordage pipe, the diameter of orbicule is greater than the diameter of eyelet, utilizes collection pulling force to make orbicule prop up eyelet;
D) cordage of passing through eyelet, through a tank, is solidified, after the casting solution on cordage surface loses flowability, is sent in liquid;
E) collect.
In the present embodiment, by following procedure declaration:
1. the cordage pulling in fiber roller 2 is passed successively logical base coating device 3, horizontal tank 4, is wound on wire drawing wheel 8
2. the position that arranges film silk in logical embryo coating device 3 can be immersed in casting solution 3-4 film silk under the effect of guide wheel 3-1, adjusts guide wheel 3-1 position, makes cordage level pass perforated metal plate 3-3.
3. ON cycle device 6, make to have in horizontal tank 4 liquid-circulating of uniform temperature;
4. open wire-feed motor 2 and receive silk machine 8, during the logical embryo coating device 3 of cordage process, under the effect of guide wheel 3-1, immerse casting solution 3-4, during afterwards by metal ball 3-2, feed liquid in infiltrated fiber rope is extruded, during through perforated metal plate 3-3, unnecessary feed liquid outside cordage is wiped off, complete painting membrane process.
5. film silk, receiving under the traction of silk machine 9, through horizontal tank 4, solidifies in liquid, and film silk surface loses flowability, and forms required film silk, is collected on wire drawing wheel 8.
6. wire drawing wheel 8 is collected after the film silk of some, shears to bind and carries out post processing.
Wherein, object during logical embryo in stay pipe is not limited to spheroid, is also not limited to metal material, can be other materials, other shapes.Stopping the hole of bead, be also not limited to circular hole, can be square, polygon etc.Spinning mode is not limited to horizontal spinning, can be also vertical, and stay pipe enters along vertical ground direction and walks around guide wheel after the gel groove of certain depth and turn back, and after gel, receives on silk machine again and receives silk.These are all conventional distortion of the present invention, within protection scope of the present invention.
As mentioned above, embodiments of the invention are explained, but as long as not departing from fact inventive point of the present invention and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection scope of the present invention.
Claims (3)
1. a production method for enhancement type hollow fiber film, is characterized in that, comprises the steps:
A) cordage braiding, as the inner support of hollow-fibre membrane;
B) pull cordage by casting solution, cordage is immersed in casting solution completely;
C) cordage of leaving casting solution, by an eyelet, is placed an orbicule in cordage pipe, the diameter of orbicule is greater than the diameter of eyelet, utilizes collection pulling force to make orbicule prop up eyelet;
D) cordage of passing through eyelet, through a tank, is solidified, after the casting solution on cordage surface loses flowability, is sent in liquid;
E) collect.
2. a device that adopts the method for claim 1 to produce enhancement type hollow fiber film, comprise the wire-feed motor of conveying fiber rope, horizontal tank, the receipts silk machine of being disposed in order, in wire-feed motor, there is fiber roller, receive in silk machine and have wire drawing wheel, it is characterized in that, between described wire-feed motor and horizontal tank, be also provided with a logical base coating device, logical base coating device comprises that one is equipped with the container of casting solution, in container, be sequentially with wire feed guide wheel, thread pressing wheel, output guide wheel, thread pressing wheel is pressed into the cordage of passing through in casting solution; The container other end is provided with one and holds the perforated metallic plate of tool that cordage is passed through, and in the pipeline section of cordage by eyelet, a sphere is housed, and the diameter of sphere is greater than the diameter of metallic plate eyelet.
3. the process units of enhancement type hollow fiber film according to claim 2, is characterized in that, described horizontal tank is connected with temperature control tank and EGR by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210160504.0A CN102688698B (en) | 2012-05-22 | 2012-05-22 | Method and device for producing enhanced hollow fiber membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210160504.0A CN102688698B (en) | 2012-05-22 | 2012-05-22 | Method and device for producing enhanced hollow fiber membrane |
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| CN102688698A CN102688698A (en) | 2012-09-26 |
| CN102688698B true CN102688698B (en) | 2014-08-13 |
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| CN201210160504.0A Active CN102688698B (en) | 2012-05-22 | 2012-05-22 | Method and device for producing enhanced hollow fiber membrane |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058059A (en) * | 2007-06-05 | 2007-10-24 | 天津膜天膜工程技术有限公司 | Making method and device for reinforced composite material hollow membrane |
| CN102240509A (en) * | 2010-05-10 | 2011-11-16 | 武汉美克安波科技有限公司 | Composite hollow fiber film preparation method based on on-line braiding-phase transfer moulding |
| CN202638292U (en) * | 2012-05-22 | 2013-01-02 | 北京碧水源膜科技有限公司 | Production device of enhanced hollow fiber membranes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6890435B2 (en) * | 2002-01-28 | 2005-05-10 | Koch Membrane Systems | Hollow fiber microfiltration membranes and a method of making these membranes |
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- 2012-05-22 CN CN201210160504.0A patent/CN102688698B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058059A (en) * | 2007-06-05 | 2007-10-24 | 天津膜天膜工程技术有限公司 | Making method and device for reinforced composite material hollow membrane |
| CN102240509A (en) * | 2010-05-10 | 2011-11-16 | 武汉美克安波科技有限公司 | Composite hollow fiber film preparation method based on on-line braiding-phase transfer moulding |
| CN202638292U (en) * | 2012-05-22 | 2013-01-02 | 北京碧水源膜科技有限公司 | Production device of enhanced hollow fiber membranes |
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| CN102688698A (en) | 2012-09-26 |
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Inventor after: Chen Yili Inventor after: Peng Xingzheng Inventor after: Li Suoding Inventor after: Dai Pan Inventor after: Wen Jianping Inventor before: Chen Yili Inventor before: Peng Xingzheng Inventor before: Li Suoding Inventor before: Dai Pan Inventor before: Wen Jianping |
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Application publication date: 20120926 Assignee: GUANGDONG O'WATER ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Assignor: Beijing Bishui Yuanmo Science and Technology Co., Ltd. Contract record no.: 2015990000120 Denomination of invention: Method and device for producing enhanced hollow fiber membrane Granted publication date: 20140813 License type: Exclusive License Record date: 20150324 |
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