JPH0369607A - Hollow fiber membrane spinning unit with spinneret angle-regulative device - Google Patents
Hollow fiber membrane spinning unit with spinneret angle-regulative deviceInfo
- Publication number
- JPH0369607A JPH0369607A JP20458989A JP20458989A JPH0369607A JP H0369607 A JPH0369607 A JP H0369607A JP 20458989 A JP20458989 A JP 20458989A JP 20458989 A JP20458989 A JP 20458989A JP H0369607 A JPH0369607 A JP H0369607A
- Authority
- JP
- Japan
- Prior art keywords
- spinneret
- angle
- spinning
- hollow fiber
- fiber membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009987 spinning Methods 0.000 title claims abstract description 41
- 239000012528 membrane Substances 0.000 title claims abstract description 23
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 22
- 230000001112 coagulating effect Effects 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 23
- 238000005345 coagulation Methods 0.000 claims description 19
- 230000015271 coagulation Effects 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000011550 stock solution Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001891 gel spinning Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、各種重合体を原料とする中空糸状分離膜の製
造装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for producing hollow fiber separation membranes using various polymers as raw materials.
（従来技術及び発明が解決しようとする課題）選択透過
機能を有する中空糸膜は、限外濾過、逆浸透等による溶
液分離やガス分離に用いられ、医療をはじめとして電子
工業、食品工業及びその他の各種産業で利用されている
。(Prior art and problems to be solved by the invention) Hollow fiber membranes with a selective permeation function are used for solution separation and gas separation by ultrafiltration, reverse osmosis, etc., and are used in medical, electronic, food, and other industries. It is used in various industries.
かかる中空糸膜の製造に際しては、乾湿式紡糸が一般に
行われ、紡糸口金からの紡糸原液の吐出にはじまり、凝
固、水洗処理など一連の過程を経る製造方法が公知であ
る。In the production of such hollow fiber membranes, dry-wet spinning is generally performed, and a production method is known that involves a series of processes including discharging a spinning stock solution from a spinneret, coagulation, and washing with water.
乾湿式紡糸法は、紡糸口金より吐出した紡糸原液を一定
距離の空中を走行させたのち、凝固液中へ導入して凝固
させるものであるが、このように紡糸口金を凝固液と接
触させず空中に置いた状態で長時間中空糸膜の紡糸を行
うと空気中を浮遊するゴミやほこりが口金の紡糸原液吐
出部に付着したり、あるいは吐出された紡糸原液の一部
が糸にならずに口金面に付着するなどして、それ以降の
紡糸で製造される中空糸膜の形状を損うなどのトラブル
が発生することがある。In the dry-wet spinning method, the spinning stock solution discharged from the spinneret travels a certain distance in the air, and then is introduced into the coagulating liquid and coagulated. If a hollow fiber membrane is spun for a long time while it is left in the air, dirt and dust floating in the air may adhere to the spinning dope discharge part of the spinneret, or some of the spun dope may not become yarn. This may cause problems such as adhesion to the spinneret surface, damaging the shape of the hollow fiber membrane produced in the subsequent spinning process.
このようなトラブルが発生した場合は、水などの凝固剤
で紡糸口金表面を清拭してやると紡糸そのものを中断さ
せずとも正常な紡糸にもどすことが可能であるが、紡糸
口金面は当然、凝固液面と対面している上、紡糸口金面
と凝固液面との間隔はおよそ２０（７）以下であること
が多く、口金面と凝固液面が近接した状態で紡糸が行わ
れているため、凝固浴の外部から口金面を直接観察する
ことが困難となり、口金面の清拭も容易ではない。If such a problem occurs, it is possible to return to normal spinning without interrupting the spinning process by wiping the surface of the spinneret with a coagulant such as water, but the surface of the spinneret may naturally be coagulated. In addition to facing the liquid level, the distance between the spinneret surface and the coagulating liquid level is often approximately 20 (7) or less, and spinning is performed with the spinneret surface and the coagulating liquid level close to each other. , it becomes difficult to directly observe the cap surface from outside the coagulation bath, and it is also difficult to clean the cap surface.
（課題を解決するための手段）
本発明は前記した紡糸口金の汚れ等によるトラブルに際
して容易に口金面の清拭を行うことのできる中空糸膜紡
糸装置を得ることを目的とする。(Means for Solving the Problems) An object of the present invention is to obtain a hollow fiber membrane spinning device that allows easy cleaning of the spinneret surface in the event of problems such as staining of the spinneret.
即ち本発明は、チューブインオリフィス型紡糸口金より
紡糸原液を凝固浴中へ吐出させる中空糸状分離膜の製造
において、紡糸口金面が凝固液面に対してなす角度を調
整する手段を備えてなる角度調整式中空糸膜紡糸装置を
提供するものである。That is, the present invention provides a method for manufacturing a hollow fiber separation membrane in which a spinning stock solution is discharged into a coagulation bath from a tube-in-orifice type spinneret, which is equipped with means for adjusting the angle that the spinneret surface makes with respect to the coagulation liquid surface. An adjustable hollow fiber membrane spinning device is provided.
本発明の装置を用いれば、中空糸膜製造時は紡糸口金が
凝固波面に対して平行である紡糸位置で紡糸するのに対
して、口金面の清掃の際は凝固液面に平行であった紡糸
口金面を傾け、凝固浴の外側に位置した作業者が直接口
金面を観察しやすい状態にした口金洗浄位置で口金面の
清拭を行うことができ、さらに清拭終了後は再び紡糸、
口金面を紡糸位置にもどすことで紡糸を中止することな
しに口金面の清拭を行うことができる。When using the apparatus of the present invention, during hollow fiber membrane production, the spinneret spins at a spinning position parallel to the coagulation wave surface, whereas when cleaning the spinneret surface, the spinneret is parallel to the coagulation liquid surface. The spinneret surface can be cleaned at the spinneret cleaning position where the spinneret surface is tilted so that the operator located outside the coagulation bath can easily directly observe the spinneret surface.Furthermore, after wiping, the spinneret surface can be spun again.
By returning the spinneret surface to the spinning position, the spinneret surface can be cleaned without stopping spinning.
口金洗浄位置における紡糸口金面が凝固液に対してなす
角度は、２０″以上できれば３０″以上が好適で、上記
角度が２０°に満たないと凝固浴の外に位置する作業者
からは実際上、紡糸口金面が十分確認できない場合が多
く、凝固剤にょる清拭作業も困難であるので好ましくな
い。The angle that the spinneret surface makes with respect to the coagulation liquid at the nozzle cleaning position is preferably 20" or more, preferably 30" or more. If the angle is less than 20°, it will be difficult for workers located outside the coagulation bath to notice it. In many cases, the surface of the spinneret cannot be sufficiently confirmed, and wiping with a coagulant is difficult, which is not preferable.
また上記角度が９０″、つまり紡糸口金面が凝固液面に
対して垂直となる状態に近づくと、口金より吐出された
紡糸原液が口金面を伝って流れ始める結果、紡糸は明ら
かに途切れてしまう。さらに紡糸口金の構造あるいは紡
糸口金を組み込んだ口金バック等の構造による制約から
、結局、上記角度の上限は４５″以下となるのが一般的
であるが、この限界角度は本来使用する口金や口金バッ
ク等の構造によって決まるものである。Furthermore, when the above angle approaches 90'', that is, the spinning nozzle surface is perpendicular to the coagulating liquid surface, the spinning stock solution discharged from the nozzle begins to flow along the nozzle surface, and as a result, spinning is clearly interrupted. Furthermore, due to constraints due to the structure of the spinneret or the structure of the spinneret back into which the spinneret is installed, the upper limit of the above angle is generally 45" or less, but this limit angle depends on the spinneret originally used and the spinneret back. This is determined by the structure of the cap back, etc.
紡糸口金を傾ける向きとしては、凝固浴の外側に位置し
た作業者が直接口金面を観察可能であれば特に制限され
ないが、口金面の観察あるいは清拭作業の容易さを考え
ると、紡糸口金に対してより近接した凝固浴壁面の外側
から作業できるような向きに傾けることがより望ましい
。さらに口金を傾ける方法については、紡糸口金を直接
あるいは間接的に傾ける方向に対して垂直で、なおかつ
水平な軸と接続し、この軸を回転させることで口金面を
傾ける方法が一般的であるが、これ以外にも通常考えら
れるあらゆる方法が適用できる。The direction in which the spinneret is tilted is not particularly limited as long as the operator located outside the coagulation bath can directly observe the spinneret surface. On the other hand, it is more desirable to tilt the coagulation bath in a direction that allows work to be performed from the outside of the wall surface of the coagulation bath. Furthermore, a common method for tilting the spinneret is to directly or indirectly connect the spinneret to a shaft that is perpendicular and horizontal to the direction in which the spinneret is tilted, and then rotate this shaft to tilt the spinneret surface. In addition to this, any other commonly thought of methods can be applied.
（実施例）
以下、図面を参照しつつ実施例により本発明をさらに説
明する。(Examples) Hereinafter, the present invention will be further explained by examples with reference to the drawings.
図は本発明による中空糸膜紡糸装置の一実施例を示すも
ので、第１図は中空糸膜製造の基本概念図、第２図およ
び第３図は凝固浴９の外側、具体的には作業者が紡糸口
金の清拭を行う側から装置を見た側面図である。The figures show an embodiment of the hollow fiber membrane spinning apparatus according to the present invention, in which Figure 1 is a basic conceptual diagram of hollow fiber membrane production, and Figures 2 and 3 are the outside of the coagulation bath 9, specifically the FIG. 3 is a side view of the apparatus viewed from the side where an operator cleans the spinneret.
第２図中、紡糸口金３は口金パック１の内部に組み込ま
れており、紡糸原液導入管６．紡糸芯液導入管７より送
り込まれた紡糸原液および紡糸芯液が、中空糸膜８とな
って吐出される。また、円柱状の支持軸２を軸受け４に
固定用ネジ５で固定することにより、紡糸口金３の口金
面が凝固浴９中の凝固液１０の液面と平行になった状態
、つまり紡糸位置で固定されており、通常の中空糸膜紡
糸が行なわれている。In FIG. 2, a spinneret 3 is assembled inside a spinneret pack 1, and a spinning dope introduction tube 6. The spinning stock solution and the spinning core solution sent through the spinning core solution introduction tube 7 are discharged as hollow fiber membranes 8 . Furthermore, by fixing the cylindrical support shaft 2 to the bearing 4 with the fixing screw 5, the spinneret 3 is placed in a state in which the spinneret surface is parallel to the surface of the coagulating liquid 10 in the coagulating bath 9, that is, the spinning position. The fibers are fixed at 100 mm, and ordinary hollow fiber membrane spinning is performed.
これに対して、支持軸２を回転させ、紡糸口金３の口金
面を凝固液１ｏの液面に対して傾け、口金洗浄位置に再
度固定しなおした状態が第３図で、この際口金面と凝固
液の液面とのなす角度は約４０”であった。この状態に
おいて、紡糸口金３の口金面は凝固浴の外側より容易に
観察することができ、水の吹きつけによる口金面の洗浄
も極めて容易に行うことができた。また口金洗浄の間も
紡糸は中断されておらず、口金洗浄終了後、再び支持軸
２を回転させることにより、口金面を凝固液面と平行と
し中空糸膜の製造紡糸を継続させることが可能であった
。On the other hand, FIG. 3 shows a state in which the support shaft 2 is rotated, the spinneret surface of the spinneret 3 is tilted with respect to the liquid level of the coagulating liquid 1o, and the spinneret is fixed again in the spinneret cleaning position. The angle formed by the surface of the spinneret 3 and the surface of the coagulation liquid was approximately 40". In this state, the spinneret surface of spinneret 3 could be easily observed from the outside of the coagulation bath, and the spinneret surface could be easily observed from the outside of the coagulation bath. Cleaning was also extremely easy.Also, spinning was not interrupted during the spinneret cleaning, and by rotating the support shaft 2 again after the spinneret was cleaned, the spinneret surface was made parallel to the coagulating liquid level and the hollow It was possible to continue manufacturing and spinning the thread membrane.
（発明の効果）
以上述べたように、本発明の口金角度調整式中空糸膜紡
糸装置は、紡糸口金面を凝固液の液面と平行にした紡糸
位置と紡糸口金面を凝固液の液面に対して傾けた口金洗
浄位置との間で角度調整可能とすることで、紡糸口金の
洗浄を紡糸を中断させることなく、しかも口金を直接観
察しながら容易に行うことができ、中空糸膜の品質向上
、生産性向上等に寄与するものである。(Effects of the Invention) As described above, the spinneret angle adjustable hollow fiber membrane spinning apparatus of the present invention has a spinning position where the spinneret surface is parallel to the liquid level of the coagulating liquid, and a spinning position where the spinneret surface is parallel to the liquid level of the coagulating liquid. By making it possible to adjust the angle between the spinning nozzle cleaning position and the spinning nozzle tilting to This contributes to quality improvement, productivity improvement, etc.
第１図は中空糸膜紡糸に関する基本概念図、第２図およ
び第３図は本発明の実施例による中空糸膜紡糸装置の側
面図である。
１・・・口金バック、２・・・支持軸、３・・・紡糸口
金、４・・・軸受け、５・・・固定用ネジ、６・・・紡
糸原液導入管、７・・・紡糸芯液導入管、８・・・中空
糸膜、９・・・凝固浴、１０・・・凝固液、１１．１２
・・・フリーロール。FIG. 1 is a basic conceptual diagram regarding hollow fiber membrane spinning, and FIGS. 2 and 3 are side views of a hollow fiber membrane spinning apparatus according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Spinneret back, 2... Support shaft, 3... Spinneret, 4... Bearing, 5... Fixing screw, 6... Spinning stock solution introduction tube, 7... Spinning core Liquid introduction pipe, 8... Hollow fiber membrane, 9... Coagulation bath, 10... Coagulation liquid, 11.12
...Freeroll.
Claims (1)
凝固浴中へ吐出させる中空糸状分離膜の製造において、
紡糸口金面が凝固液の液面に対してなす角度を調整する
手段を備えてなる角度調整式中空糸膜紡糸装置。 ２）角度調整が、紡糸口金面が凝固液面に対して平行で
ある紡糸位置から凝固液面に対して２０°以上の角度と
なる口金洗浄位置との間で可能である請求項１記載の角
度調整式中空糸膜紡糸装置。[Claims] 1) In the production of a hollow fiber separation membrane in which a spinning stock solution is discharged from a tube-in-orifice type spinneret into a coagulation bath,
An angle-adjustable hollow fiber membrane spinning device comprising means for adjusting the angle that the spinneret surface makes with respect to the liquid level of the coagulating liquid. 2) Angle adjustment is possible between a spinning position where the spinneret surface is parallel to the coagulating liquid level and a spinneret cleaning position where the spinneret surface is at an angle of 20° or more with respect to the coagulating liquid level. Angle-adjustable hollow fiber membrane spinning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20458989A JPH0369607A (en) | 1989-08-09 | 1989-08-09 | Hollow fiber membrane spinning unit with spinneret angle-regulative device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20458989A JPH0369607A (en) | 1989-08-09 | 1989-08-09 | Hollow fiber membrane spinning unit with spinneret angle-regulative device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0369607A true JPH0369607A (en) | 1991-03-26 |
Family
ID=16492968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20458989A Pending JPH0369607A (en) | 1989-08-09 | 1989-08-09 | Hollow fiber membrane spinning unit with spinneret angle-regulative device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0369607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012187549A (en) * | 2011-03-11 | 2012-10-04 | Ube Nitto Kasei Co Ltd | Small-diameter degassing tube and method for producing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55155704A (en) * | 1979-05-23 | 1980-12-04 | Nippon Zeon Co Ltd | Hollow semipermeable membrane and its production |
-
1989
- 1989-08-09 JP JP20458989A patent/JPH0369607A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55155704A (en) * | 1979-05-23 | 1980-12-04 | Nippon Zeon Co Ltd | Hollow semipermeable membrane and its production |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012187549A (en) * | 2011-03-11 | 2012-10-04 | Ube Nitto Kasei Co Ltd | Small-diameter degassing tube and method for producing the same |
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