JPH02194822A - Spiral-type membrane module - Google Patents
Spiral-type membrane moduleInfo
- Publication number
- JPH02194822A JPH02194822A JP1379789A JP1379789A JPH02194822A JP H02194822 A JPH02194822 A JP H02194822A JP 1379789 A JP1379789 A JP 1379789A JP 1379789 A JP1379789 A JP 1379789A JP H02194822 A JPH02194822 A JP H02194822A
- Authority
- JP
- Japan
- Prior art keywords
- spacer
- membrane
- wavy
- spiral
- corrugated
- 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
- 239000012528 membrane Substances 0.000 title claims abstract description 51
- 125000006850 spacer group Chemical group 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000000926 separation method Methods 0.000 claims abstract description 20
- 230000002265 prevention Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 2
- 230000003449 preventive effect Effects 0.000 description 5
- 239000004744 fabric Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は逆浸透膜分離装置や限外濾過装置或いは精密濾
過装置等の膜分離装置に用いられるスパイラル型膜モジ
ュールに関するものであり、特に波板形スペーサを介し
て分離膜を集水管外周に巻き付ける際のスペーサ端辺部
の圧潰を防止するよう構成したスパイラル型膜モジュー
ルに関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a spiral membrane module used in a membrane separation device such as a reverse osmosis membrane separation device, an ultrafiltration device, or a precision filtration device. This invention relates to a spiral-type membrane module configured to prevent the edges of the spacer from being crushed when the separation membrane is wound around the outer periphery of a water collection pipe via a plate-shaped spacer.
［従来の技術］
逆浸透膜分離装置等の膜分離装置に用いられる膜モジュ
ールとして、集水管の外周に分離膜を巻回したスパイラ
ル型膜モジュールがある。このスパイラル型膜モジュー
ルにおいては、膜間に原水が通る流路を形成するために
スペーサを介在させているが、従来このスペーサとして
波板形のスペーサ（いわゆるコルゲートスペーサ）が知
られている。第６図はコルゲートスペーサを用いたスパ
イラル型膜モジュールの集水管管軸方向と垂直方向の断
面図、第７図は組立構造を示す断面図である。[Prior Art] As a membrane module used in a membrane separation device such as a reverse osmosis membrane separation device, there is a spiral-type membrane module in which a separation membrane is wound around the outer periphery of a water collection pipe. In this spiral type membrane module, a spacer is interposed between the membranes to form a flow path for raw water to pass through, and a corrugated plate-shaped spacer (so-called corrugated spacer) is conventionally known as this spacer. FIG. 6 is a sectional view taken in a direction perpendicular to the axial direction of a water collecting pipe of a spiral membrane module using a corrugated spacer, and FIG. 7 is a sectional view showing an assembled structure.
符号１は集水管であり、その外周に波板形のスペーサ２
を介して分離膜３が巻回されている。Reference numeral 1 is a water collection pipe, and a corrugated plate-shaped spacer 2 is placed around its outer circumference.
The separation membrane 3 is wound around the membrane.
第５図に拡大して示す如く、集水管１は管内外を連通ず
る開口１ａが穿設されている。分離膜３は袋状のもので
あり、その中央部３ａが集水管１をくるんでおり、非中
央部３ｂ、３ｃが重ね合わされた状態にて集水管１の周
囲に巻回される。この袋状分離膜３の内部にはメツシュ
スペーサ４が挿入されており、この袋状分離膜３の内部
が透過水通路５となる。As shown in an enlarged view in FIG. 5, the water collection pipe 1 is provided with an opening 1a that communicates the inside and outside of the pipe. The separation membrane 3 is bag-shaped, and its central portion 3a wraps around the water collection pipe 1, and the non-central portions 3b and 3c are wound around the water collection pipe 1 in an overlapping state. A mesh spacer 4 is inserted into the bag-like separation membrane 3, and the inside of the bag-like separation membrane 3 becomes a permeate passage 5.
波板形スペーサ２は原水流路を形成するためのものであ
り、該波板形スペーサ２の波状は集水管１の管軸方向に
沿フたものとなっている。この波板形スペーサは、繊維
等の懸濁物を含む原水が流通されても、該懸濁物が付着
、堆積しにくいという特徴を有している。The corrugated spacer 2 is for forming a raw water flow path, and the wave shape of the corrugated spacer 2 runs along the axis of the water collecting pipe 1. This corrugated plate-shaped spacer has the characteristic that even if raw water containing suspended matter such as fibers is distributed, the suspended matter is difficult to adhere to or accumulate on the corrugated spacer.
波板形スペーサを用いた別の従来のスパイラル型膜モジ
ュールの組み立て（巻き付け）前の状態を第８図に示す
。また、第８図のＡ部分の巻き付は時の状態を模式的に
第９．１０図に示す。第８〜１０図において、ニラ折り
にされた多数組の分離膜３の表面同志の間に波板形スペ
ーサ２が挿入され、分離膜３の表面同志の間が原水流路
５となっている。集水管１の外周部分と連通ずるように
透水性の集水布６が分１１ｉ１を膜３の裏面同志の間に
挿入されている。そして、分ｌ１ｌｌｔ膜３と集水布６
とを重ね合せた状態で集水管１の外周に巻き付ける。FIG. 8 shows another conventional spiral membrane module using corrugated spacers before assembly (winding). Further, the winding state of part A in FIG. 8 is schematically shown in FIG. 9.10. In FIGS. 8 to 10, a corrugated spacer 2 is inserted between the surfaces of multiple sets of separation membranes 3 that are folded in half, and a raw water flow path 5 is formed between the surfaces of the separation membranes 3. . A water-permeable water collecting cloth 6 is inserted between the back surfaces of the membrane 3 at portions 11i1 so as to communicate with the outer peripheral portion of the water collecting pipe 1. Then, the membrane 3 and the water collecting cloth 6
Wrap them around the outer periphery of the water collection pipe 1 in a superimposed state.
第８〜１０図の如くして製造されたスパイラル型膜モジ
ュールにあっても、原水は波板形スペーサ２に沿って流
れる。分１１を膜３を透過した透過水は集水布６に沿っ
て集水管１に向って流れ、開口１ａを通って集水管１内
に流入する。Even in the spiral membrane module manufactured as shown in FIGS. 8 to 10, raw water flows along the corrugated spacer 2. The permeated water that has passed through the membrane 3 for 11 minutes flows toward the water collection pipe 1 along the water collection cloth 6, and flows into the water collection pipe 1 through the opening 1a.
［発明が解決しようとする課題］
上記の波板形スペーサを有するスパイラル型膜モジュー
ルを製造する場合、波板形スペーサ２には圧迫荷重が加
えられる。特に、集水管１に巻き始められる端辺部分（
集水管１に沿う端辺部分）には、相当に大きな圧迫荷重
が加えられる。そして、このために該端辺部分で波板形
スペーサの波が圧潰（座屈）され、いわゆるベシャンコ
又はそれに近い形状となる。この結果、該端辺部分では
原水の流路断面積が小さくなり、分離膜の有効膜面積が
減少していた（著しい場合には、全膜面積の約３０％程
度が損失となることもあった。）［課題を解決するため
の手段］
本発明のスパイラル型膜モジュールは、波板形スペーサ
の集水管に沿う端辺部分に、波板形スペーサの波の高さ
方向に厚みを有するスペーサ圧潰防止体を設けたことを
特徴とするものである。[Problems to be Solved by the Invention] When manufacturing a spiral membrane module having the above corrugated spacer, a compressive load is applied to the corrugated spacer 2. In particular, the end part (
A considerably large compressive load is applied to the end portion along the water collection pipe 1). For this reason, the waves of the corrugated spacer are crushed (buckled) at the end portions, resulting in a so-called Bechanko or a shape close to it. As a result, the cross-sectional area of the raw water flow path became smaller in the edge portion, and the effective membrane area of the separation membrane decreased (in severe cases, about 30% of the total membrane area could be lost). ) [Means for Solving the Problems] The spiral membrane module of the present invention includes a spacer having a thickness in the wave height direction of the corrugated spacer at the end portion of the corrugated spacer along the water collection pipe. It is characterized by being provided with a crush prevention body.
［作用コ
かかる本発明のスパイラル型膜モジュールにおいては、
波板形スペーサを分離膜と共に集水管に巻き付ける際の
圧迫荷重が圧潰防止体により対抗され、波板形スペーサ
の圧潰が防止される。これにより、原水流路が犬きくと
れ、有効膜面積も大きくなる。[In the spiral-wound membrane module of the present invention that has the following effects:
The crushing prevention body counteracts the compressive load when the corrugated spacer is wound around the water collection pipe together with the separation membrane, thereby preventing the corrugated spacer from being crushed. This makes the raw water flow path clearer and increases the effective membrane area.
［実施例コ 以下、図面を参照して実施例について説明する。[Example code] Examples will be described below with reference to the drawings.
第１．２図は第８図に示したタイプのスパイラル型膜モ
ジュールにおいて圧潰防止体７を設けた実施例を示すも
のであり、集水管１に対し分離膜３を巻き始めた状態を
示している。FIG. 1.2 shows an embodiment of the spiral type membrane module of the type shown in FIG. 8 in which a crush preventive body 7 is provided, and shows a state in which the separation membrane 3 has begun to be wound around the water collection pipe 1. There is.
本実施例では、第３図に示す如く、波板形スペーサ２の
集水管１に沿った端辺部分に圧潰防止体７が接着剤によ
り接着されている。この圧潰防止体７は波板形スペーサ
２の波の高さ方向（第３図の矢印り方向）の厚みｄを有
するものである。In this embodiment, as shown in FIG. 3, a crush prevention body 7 is bonded to the edge portion of the corrugated spacer 2 along the water collection pipe 1 with an adhesive. This crush prevention body 7 has a thickness d in the wave height direction of the corrugated spacer 2 (in the direction of the arrow in FIG. 3).
かかる圧潰防止体７を設けることにより、分離膜３を集
水管１に巻回する際に波板形スペーサ２に加えられる圧
迫荷重が対抗され、波板形スペーサ２の前記端辺部分に
おける圧潰が防止される。これにより、原水流路が大き
くなり、有効膜面積が大きくなる。By providing such a crush prevention body 7, the compressive load applied to the corrugated spacer 2 when the separation membrane 3 is wound around the water collection pipe 1 is counteracted, and the crushing at the end portion of the corrugated spacer 2 is prevented. Prevented. This increases the raw water flow path and increases the effective membrane area.
第４図は圧潰防止体７の取り付は構造の別の例を示すも
のであり、圧潰防止体７に形成されたスリット８に波板
形スペーサ２の端辺が挿入されている。なお、このスペ
ーサ２の端辺は単に挿入されるだけであっても良く、接
着剤を用いてスリット８に挿入されても良い。FIG. 4 shows another example of the mounting structure of the crush preventive body 7, in which the edge of the corrugated spacer 2 is inserted into a slit 8 formed in the crush preventive body 7. Note that the end side of the spacer 2 may be simply inserted, or may be inserted into the slit 8 using an adhesive.
第５図は第６．７図に示したスパイラル型膜モジュール
において波板形スペーサ２の端辺に圧潰防止体を設けた
実施例を示すものである。本実施例においても、スペー
サ２の端辺部分における圧潰が確実に防止される。FIG. 5 shows an embodiment in which a crush preventive body is provided on the edge of the corrugated spacer 2 in the spiral type membrane module shown in FIG. 6.7. In this embodiment as well, crushing at the end portions of the spacer 2 is reliably prevented.
もちろん、本発明は波板形スペーサを用いた図示以外の
各種のスパイラル型膜モジュールについても適用できる
ことは明らかである。Of course, it is obvious that the present invention is also applicable to various spiral-wound membrane modules other than those shown in the drawings that use corrugated spacers.
本発明において、圧潰防止体７の厚さｄは波板形スペー
サ２の波の高さ（全幅）とほぼ等しいものが好適である
が、それよりも多少大きかったり、逆に小さかったりし
ても良い。In the present invention, the thickness d of the crush prevention body 7 is preferably approximately equal to the height (full width) of the waves of the corrugated spacer 2, but it may be slightly larger or smaller than that. good.
圧潰防止体７の材質は、耐食性を有していれば良く、硬
質であっても軟質であっても良い。軟質である場合には
、前記の圧迫荷重が加えられて変形した後でも波板形ス
ペーサ２の波の高さをそれ程は減じない程度の厚みを有
しているものが採用される。The material of the crush prevention body 7 only needs to have corrosion resistance, and may be hard or soft. If it is soft, it has a thickness that does not significantly reduce the wave height of the corrugated plate-shaped spacer 2 even after it is deformed by the above-mentioned compressive load.
上記実施例では圧潰防止体として中実体が図示されてい
るが、中空体であっても良く、多孔体であっても良い。In the above embodiment, a solid body is illustrated as the crush prevention body, but it may be a hollow body or a porous body.
上記実施例では、スペーサ２の波状は集水管の管軸心方
向と平行方向の直線状とされているが、蛇行していても
良い。In the above embodiment, the wavy shape of the spacer 2 is linear in the direction parallel to the axial direction of the water collection pipe, but it may be meandering.
本発明においては、圧潰防止体７として図示の如（角が
丸味を帯びたものや円形断面形状もしくはそれに近似し
たものが好適である。このようにすると、分離膜３と圧
潰防止体７との間に局部的な摩擦が働いて分離膜３に損
傷が生ずることが防止される。In the present invention, it is preferable that the crush preventive body 7 has rounded corners, a circular cross-sectional shape, or something similar to the shape as shown in the figure. Damage to the separation membrane 3 due to local friction between the two is prevented.
［発明の効果］
以上の通り、本発明のスパイラル型膜モジュールにおい
ては、波板形スペーサの圧潰が防止され、有効膜面積が
大きくなる。また、波板形スペーサ、の集水管側の端辺
近傍における原水流路が大きくなるので、原水中の懸濁
物による閉塞も防止される。[Effects of the Invention] As described above, in the spiral membrane module of the present invention, the corrugated spacer is prevented from being crushed, and the effective membrane area is increased. Furthermore, since the raw water flow path near the end of the corrugated plate-shaped spacer on the water collection pipe side becomes larger, blockage due to suspended matter in the raw water is also prevented.
第１図及び第２図は実施例に係るスパイラル型膜モジュ
ールを示す断面図、第３図及び第４図は波板形スペーサ
の要部斜視図である。第５図は別の実施例を示す断面図
である。第６図ないし第１０図の各図は従来例の構成説
明図である。
１・・・集水管、 ２・・・波板形スペーサ、３・
・・分離膜、 ５・・・原水流路、７・・・圧潰防止
体。
代理人 弁理士 重 野 剛
Ｍ１図
第５図
第２図
ｂ
第６図
絶７図
ｂ’FIGS. 1 and 2 are cross-sectional views showing a spiral membrane module according to an embodiment, and FIGS. 3 and 4 are perspective views of essential parts of a corrugated spacer. FIG. 5 is a sectional view showing another embodiment. Each of FIGS. 6 to 10 is a diagram illustrating the configuration of a conventional example. 1... Water collection pipe, 2... Corrugated plate spacer, 3...
... Separation membrane, 5... Raw water channel, 7... Collapse prevention body. Agent Patent Attorney Tsuyoshi Shigeno M1 Figure 5 Figure 2 b Figure 6 Zetsu Figure 7 b'
Claims (1)
を巻回したスパイラル型膜モジュールにおいて、波板形
スペーサの集水管に沿う端辺部分に、波板形スペーサの
波の高さ方向に厚みを有するスペーサ圧潰防止体を設け
たことを特徴とするスパイラル型膜モジュール。(1) In a spiral membrane module in which a separation membrane is wound around the outer circumference of a water collection pipe through a corrugated spacer, the wave height of the corrugated spacer is A spiral membrane module characterized by being provided with a spacer crush prevention body having a thickness in the width direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1379789A JPH02194822A (en) | 1989-01-23 | 1989-01-23 | Spiral-type membrane module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1379789A JPH02194822A (en) | 1989-01-23 | 1989-01-23 | Spiral-type membrane module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02194822A true JPH02194822A (en) | 1990-08-01 |
Family
ID=11843246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1379789A Pending JPH02194822A (en) | 1989-01-23 | 1989-01-23 | Spiral-type membrane module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02194822A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014050461A1 (en) * | 2012-09-28 | 2014-04-03 | 富士フイルム株式会社 | Acidic gas separation module, and method for manufacturing acidic gas separation module |
| CN106669426A (en) * | 2016-12-30 | 2017-05-17 | 北京碧水源膜科技有限公司 | Wound membrane element and winding method thereof |
-
1989
- 1989-01-23 JP JP1379789A patent/JPH02194822A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014050461A1 (en) * | 2012-09-28 | 2014-04-03 | 富士フイルム株式会社 | Acidic gas separation module, and method for manufacturing acidic gas separation module |
| CN106669426A (en) * | 2016-12-30 | 2017-05-17 | 北京碧水源膜科技有限公司 | Wound membrane element and winding method thereof |
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