JP2009195844A - Hollow fiber membrane module - Google Patents

Hollow fiber membrane module Download PDF

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JP2009195844A
JP2009195844A JP2008041561A JP2008041561A JP2009195844A JP 2009195844 A JP2009195844 A JP 2009195844A JP 2008041561 A JP2008041561 A JP 2008041561A JP 2008041561 A JP2008041561 A JP 2008041561A JP 2009195844 A JP2009195844 A JP 2009195844A
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housing
hollow fiber
fiber membrane
membrane module
fixing resin
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JP2009195844A5 (en
JP5075669B2 (en
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Tetsuya Torii
哲也 取違
Sadahito Nakahara
禎仁 中原
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Mitsubishi Rayon Engineering Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a flat hollow fiber membrane module suppressing exfoliation of fixing resin, without enhancing bending strength of a housing itself. <P>SOLUTION: The flat hollow fiber membrane module 1 includes: a bundle body 3 formed by bundling hollow fiber membranes 2 into a slender rectangular transection; the slender housing 4 with an end of the bundle inserted therein and fixing and holding it; a fixing resin part 7 for fixing ends of the respective hollow fiber membranes of the bundle inserted into an opening of the housing to each other and to an inner wall of the housing, with the open ends of the respective hollow membranes opened toward an inner space 5 for passing treating liquid in the housing, and sealing a space between the ends of the respective hollow fiber membranes and a space between the ends of the respective hollow fiber membranes and inner wall of the housing; and elastic bodies 9 extendedly disposed on an outer periphery of the fixing resin part along the longitudinal direction of the housing, the elastic bodies being bonded to the inner wall of the housing with bonding resin 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、中空糸膜モジュールに関し、詳細には、液体の分離、精製、固液分離などの濾過処理に用いられる平型の中空糸膜モジュールに関する。   The present invention relates to a hollow fiber membrane module, and in particular, to a flat hollow fiber membrane module used for filtration processes such as liquid separation, purification, and solid-liquid separation.

中空糸膜モジュールは、中空糸膜を多数本束ねた収束体の端部がハウジングに挿入され、中空糸膜の端部を開口させた状態で中空糸膜とハウジングとの間を樹脂で封止することにより、収束体をハウジング内で支持・固定した構造を有している。   The hollow fiber membrane module is sealed with resin between the hollow fiber membrane and the housing with the end of the converging body in which a number of hollow fiber membranes are bundled inserted into the housing and the end of the hollow fiber membrane is open. As a result, the converging body is supported and fixed in the housing.

このような構造を有する中空糸膜モジュールは、無菌水、飲料水、高度純水の製造や、空気の浄化等の濾過処理用途で使用されている。さらに、中空糸膜モジュールは、近年では、下水処理場における２次処理、３次処理や、浄化槽における固液分離、産業廃水中のＳＳ（懸濁物質）の固液分離などの高汚濁性水濾過にも用いられている。   The hollow fiber membrane module having such a structure is used in the production of aseptic water, drinking water, highly pure water, and filtration treatment applications such as air purification. Furthermore, in recent years, hollow fiber membrane modules have been used for highly polluted water such as secondary treatment and tertiary treatment in sewage treatment plants, solid-liquid separation in septic tanks, and solid-liquid separation of SS (suspended material) in industrial wastewater. It is also used for filtration.

高汚濁性水濾過では、中空糸膜の端部開口に高圧の液体を注入したり、中空糸膜の端部開口から流体を吸引することにより所定の処理水を得たり、中空糸膜の表面を洗浄したりする作業が繰り返される。このため、高汚濁性水濾過に用いられる中空糸膜モジュールには、特に高い耐圧性が要求される。   In high-contamination water filtration, a high-pressure liquid is injected into the end opening of the hollow fiber membrane, a predetermined treated water is obtained by sucking a fluid from the end opening of the hollow fiber membrane, or the surface of the hollow fiber membrane. The operation of washing is repeated. For this reason, especially high pressure resistance is requested | required of the hollow fiber membrane module used for highly polluting water filtration.

このような高い耐圧性を有する中空糸膜モジュールの一例が、特許文献１、２に開示されている。特許文献１の中空糸膜モジュールでは、中空糸膜の収束体の少なくとも一方の端部における中空糸膜相互間を封止する封止樹脂として、硬度測定における１０秒後のショアＤ硬度が６０以上であるポリウレタン系樹脂が使用され、封止樹脂の耐圧性能を向上させている。   Examples of such hollow fiber membrane modules having high pressure resistance are disclosed in Patent Documents 1 and 2. In the hollow fiber membrane module of Patent Document 1, the Shore D hardness after 10 seconds in hardness measurement is 60 or more as a sealing resin for sealing between the hollow fiber membranes at at least one end of the convergent body of the hollow fiber membranes. Is used to improve the pressure resistance of the sealing resin.

また、特許文献２には、固定用樹脂部とハウジングの内壁との接合面がハウジングの内部空間に露出した継ぎ目の上に、１０秒後のショアＡ硬度で１０〜６０度の範囲の接着用樹脂を設けることにより、固定用樹脂とハウジングとの剥離の発生を抑制して耐圧性能を高めた中空糸膜モジュール及びその製造方法が開示されている。   Further, Patent Document 2 discloses an adhesive for bonding within a range of 10 to 60 degrees in Shore A hardness after 10 seconds on the joint where the joint surface between the fixing resin portion and the inner wall of the housing is exposed in the inner space of the housing. Disclosed is a hollow fiber membrane module and a method for manufacturing the same, in which the resin is provided to suppress the occurrence of peeling between the fixing resin and the housing and to improve the pressure resistance.

特開２００３−１０３１４６号公報JP 2003-103146 A 特開２００６−６１８１６号公報JP 2006-61816 A

ここで中空糸膜モジュールは、多数の中空糸膜が横断面が円形となるように束ねられている収束体を使用する円筒型中空糸膜モジュールと、多数の中空糸膜が横断面が細長い矩形となるように束ねられている収束体を使用する平型中空糸膜モジュールとに大別される。
後者の平型中空糸膜モジュールでは、収束体の端部を保持するハウジングが、収束体の横断面形状に合わせられた細長い形状を有しており、この細長いハウジングの長手方向の両端を支持することによって、中空糸膜モジュール全体が支持される。 Here, the hollow fiber membrane module includes a cylindrical hollow fiber membrane module using a converging body in which a large number of hollow fiber membranes are bundled so as to have a circular cross section, and a large number of hollow fiber membranes each having a rectangular shape in cross section. And a flat hollow fiber membrane module using a converging body that is bundled so that
In the latter flat hollow fiber membrane module, the housing that holds the end of the converging body has an elongated shape that matches the cross-sectional shape of the converging body, and supports both ends in the longitudinal direction of the elongated housing. Thus, the entire hollow fiber membrane module is supported.

ハウジングは、通常、安価な汎用プラスチック材料で形成されている。このため、長手方向両端で支持されているハウジングに中空糸膜モジュールの自重や外力が加わると、ハウジングが撓んでしまうことがある。具体的には、細長いハウジングの長手方向の中央付近が、支持された両端よりも下方へ変形する。   The housing is usually made of an inexpensive general-purpose plastic material. For this reason, when the weight of the hollow fiber membrane module or an external force is applied to the housing supported at both ends in the longitudinal direction, the housing may be bent. Specifically, the vicinity of the center in the longitudinal direction of the elongated housing is deformed downward from both supported ends.

この結果、特許文献１の中空糸膜モジュールのように封止樹脂の種類や量を適当に選択し封止樹脂自体の耐圧性を高めた場合であっても、ハウジングの撓みが大きくなると、収束体をハウジングに保持固定している封止樹脂が割れたり、封止樹脂とハウジングとの間に剥離が発生したりすることがあるという問題がある。   As a result, even when the type and amount of the sealing resin is appropriately selected and the pressure resistance of the sealing resin itself is increased as in the hollow fiber membrane module of Patent Document 1, the convergence is increased when the deflection of the housing increases. There is a problem in that the sealing resin that holds and fixes the body to the housing may break, or peeling may occur between the sealing resin and the housing.

同様に、特許文献２の中空糸膜モジュールのように１０秒後のショアＡ硬度で１０〜６０度の範囲の接着用樹脂で固定用樹脂をハウジングへ接着することによって固定用樹脂とハウジングとの剥離を抑制した場合であっても、ハウジングの撓みが大きくなると、接着用樹脂が裂けたり、剥離したりすることがあるという問題がある。   Similarly, the fixing resin and the housing are bonded by adhering the fixing resin to the housing with an adhesive resin having a Shore A hardness of 10 to 60 degrees after 10 seconds as in the hollow fiber membrane module of Patent Document 2. Even when the peeling is suppressed, there is a problem that the adhesive resin may be torn or peeled off when the deflection of the housing increases.

固定用樹脂部の剥離等を防止するために、硬度が高い固定用樹脂を使用することが考えられるが、硬度が高い固定用樹脂を使用すると、固定用樹脂部が割れやすくなり、また、固定用樹脂部とハウジング内壁の接着界面に作用する応力が大きくなるので固定用樹脂部の剥離を起こしやすい。このため、硬度が高い固定用樹脂を使用することは、固定用樹脂部の剥離等を防止する観点からは好ましくない。   In order to prevent peeling of the fixing resin part, it is conceivable to use a fixing resin with a high hardness. However, if a fixing resin with a high hardness is used, the fixing resin part is easily broken and fixed. Since the stress acting on the bonding interface between the resin part for resin and the inner wall of the housing is increased, the fixing resin part is easily peeled off. For this reason, it is not preferable to use a fixing resin having a high hardness from the viewpoint of preventing peeling of the fixing resin portion.

そこで、ハウジング自体の曲げ剛性を高めて撓みを抑制することによって封止樹脂あるいは接着樹脂の割れ、剥離を防止すべく、ハウジング自体を、例えば、金属、エンジニアリングプラスチック、又は繊維強化プラスチックといった高強度材料で形成することが考えられる。しかし、これらの材料は汎用プラスチックに比べて高価であるため、ハウジングをこれらの材料で形成すると、中空糸膜モジュールのコストが上昇してしまうという問題がある。   Therefore, the housing itself is made of a high-strength material such as metal, engineering plastic, or fiber reinforced plastic in order to prevent cracking or peeling of the sealing resin or adhesive resin by increasing the bending rigidity of the housing itself and suppressing the bending. It is possible to form with. However, since these materials are more expensive than general-purpose plastics, there is a problem that the cost of the hollow fiber membrane module increases when the housing is formed of these materials.

また、汎用プラスチック材料で形成したハウジングの曲げ剛性を高めるために、ハウジング自体の肉厚を厚くしたり、ハウジングにリブを設けたりすることが考えられる。   Further, in order to increase the bending rigidity of the housing formed of a general-purpose plastic material, it is conceivable to increase the thickness of the housing itself or to provide a rib on the housing.

しかし、ハウジングの肉厚を厚くすると、成形時に反りやヒケといった欠陥が発生しやすくなる。さらに、ハウジングにリブを設けると、リブの付け根に応力が集中し、荷重が繰り返しかかることにより亀裂が発生しやすくなる。さらに、リブの部分は肉厚が厚いため、ヒケが発生しやすく、ハウジングの外観が悪くなるおそれがあるといった問題がある。   However, when the thickness of the housing is increased, defects such as warpage and sink marks are likely to occur during molding. Furthermore, when a rib is provided on the housing, stress concentrates on the base of the rib, and cracks are likely to occur due to repeated load. Further, since the rib portion is thick, there is a problem that sink marks are likely to occur and the appearance of the housing may be deteriorated.

本発明は、上述した問題を解決するためになされたものであり、ハウジング自体の曲げ剛性を高めなくとも、固定用樹脂の剥離等を抑制することができる平型中空糸膜モジュールを提供することを目的とする。   The present invention has been made to solve the above-described problems, and provides a flat hollow fiber membrane module that can suppress fixing resin peeling and the like without increasing the bending rigidity of the housing itself. With the goal.

上記の目的を達成するため、
平型中空糸膜モジュールであって、
複数の中空糸膜が細長い矩形状の横断面を有するように束ねられ収束体と、
前記収束体の端部が挿入され固定保持される細長い開口を有する細長いハウジングと、
前記ハウジングの開口に挿入された前記収束体の各中空糸膜の端部を、各中空糸膜の開口端が前記ハウジング内の処理液の通過する内部空間に向けて開口した状態で互いに且つ前記ハウジングの内壁に対して固定するとともに、前記各中空糸膜の端部相互間の空間および前記各中空糸膜の端部と前記ハウジングの内壁との間の空間を封止する固定用樹脂部と、
前記固定用樹脂部の外周面に前記ハウジングの長手方向に沿って延びるように配置された弾性体と、を備え、
前記弾性体が前記ハウジングの内壁に接着用樹脂で接着されている、
ことを特徴とする中空糸膜モジュールが提供される。 To achieve the above objectives,
A flat hollow fiber membrane module,
A converging body bundled with a plurality of hollow fiber membranes having an elongated rectangular cross section;
An elongated housing having an elongated opening into which the end of the converging body is inserted and fixed;
The ends of the hollow fiber membranes of the converging body inserted into the opening of the housing are mutually connected in a state where the open ends of the hollow fiber membranes open toward the internal space through which the processing liquid in the housing passes. A fixing resin portion for fixing to the inner wall of the housing and sealing the space between the end portions of each hollow fiber membrane and the space between the end portion of each hollow fiber membrane and the inner wall of the housing; ,
An elastic body arranged on the outer peripheral surface of the fixing resin portion so as to extend along the longitudinal direction of the housing,
The elastic body is bonded to the inner wall of the housing with an adhesive resin;
A hollow fiber membrane module is provided.

このように構成された本発明の中空糸膜モジュールによれば、固定用樹脂部とハウジングとの間に弾性体が設けられているので、ハウジングが撓んだときに弾性体が変形し、ハウジングの撓みの一部が吸収される。これにより、ハウジングの撓みによるハウジングと固定用樹脂部との剥離等の発生が抑制される。   According to the hollow fiber membrane module of the present invention configured as described above, since the elastic body is provided between the fixing resin portion and the housing, the elastic body is deformed when the housing is bent, and the housing A part of the bending is absorbed. Thereby, generation | occurrence | production of peeling etc. of the housing and the resin part for fixation by the bending of a housing is suppressed.

本発明の他の好ましい態様によれば、前記弾性体は、前記固定用樹脂部を構成する材料より柔らかく、１０秒後のショアＡ硬度が１０から８０度の範囲である材料から構成されている。
このように、固定用樹脂部よりも硬度の低い弾性体の使用により、固定用樹脂部の剥離等が効果的に抑制される。 According to another preferred aspect of the present invention, the elastic body is made of a material that is softer than the material constituting the fixing resin portion and has a Shore A hardness of 10 to 80 degrees after 10 seconds. .
As described above, the use of the elastic body having a lower hardness than the fixing resin portion effectively suppresses the peeling of the fixing resin portion.

本発明の他の好ましい態様によれば、前記弾性体は、前記収束体と前記ハウジングの長手方向の内壁との間で、該内壁に沿って帯状に配置されている。
このように、帯状の形状の弾性体がハウジングの長手方向に沿って配置されることにより、固定用樹脂部の剥離等が効果的に抑制される。 According to another preferred aspect of the present invention, the elastic body is disposed in a band shape along the inner wall between the converging body and the inner wall in the longitudinal direction of the housing.
In this way, the strip-shaped elastic body is arranged along the longitudinal direction of the housing, so that peeling of the fixing resin portion or the like is effectively suppressed.

このような構成を有する本発明によれば、ハウジング自体の曲げ剛性を高めなくとも、固定用樹脂の剥離等を抑制することができる平型中空糸膜モジュールが提供される。   According to the present invention having such a configuration, there is provided a flat hollow fiber membrane module that can suppress the peeling of the fixing resin without increasing the bending rigidity of the housing itself.

以下、添付の図面を参照して、本発明の好ましい実施形態の平型中空糸膜モジュール１の構成を説明する。図１は、本発明の好ましい実施形態の平型中空糸膜モジュール１の構成を示す概略的な斜視図であり、図２は図１のII−II線に沿った部分断面図であり、図３は図１のIII−III線に沿った部分断面図である。   Hereinafter, a configuration of a flat hollow fiber membrane module 1 according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic perspective view showing a configuration of a flat hollow fiber membrane module 1 according to a preferred embodiment of the present invention. FIG. 2 is a partial cross-sectional view taken along line II-II in FIG. 3 is a partial sectional view taken along line III-III in FIG.

図１に示すように、本実施形態の中空糸膜モジュール１は、複数の中空糸膜２を細長い矩形状の横断面を有するように束ねた収束体３と、収束体３の端部が挿入されるための細長い開口を有する箱形のハウジング４とを上下に備えている。   As shown in FIG. 1, the hollow fiber membrane module 1 of this embodiment includes a converging body 3 in which a plurality of hollow fiber membranes 2 are bundled so as to have an elongated rectangular cross section, and an end of the converging body 3 is inserted. And a box-shaped housing 4 having a long and narrow opening.

図２および図３から明らかなように、ハウジング４の内周には、階段状に寸法が減少する段差部４ａが形成されている。図３に示されているように、収束体３の先端部は、収束体３を構成する各中空糸膜２の先端（開口端）が、段差部８ａの高さ位置に達するようにハウジング４の開口からハウジング４内に差し込まれている。
尚、図２、図３は、中空糸膜モジュール１の下方側のハウジング４付近の構成を示すが、上方側のハウジング４付近も上下が異なる点を除き同様の構造を有する。 As is apparent from FIGS. 2 and 3, a stepped portion 4 a whose size decreases stepwise is formed on the inner periphery of the housing 4. As shown in FIG. 3, the distal end portion of the converging body 3 is arranged so that the front end (open end) of each hollow fiber membrane 2 constituting the converging body 3 reaches the height position of the stepped portion 8 a. Is inserted into the housing 4 through the opening.
2 and 3 show the configuration in the vicinity of the lower housing 4 of the hollow fiber membrane module 1, but the upper housing 4 also has a similar structure except that the upper and lower sides are different.

中空糸膜２は、濾過膜として使用可能なものであれば、その孔径、空孔率、膜厚、外径等は、特に限定されない。好ましくは、中空糸膜の外径は２０〜３０００μｍ、孔径は０．００１〜５μｍ、空孔率は２０〜９０％、膜厚は５〜３００μｍの範囲がよい。   As long as the hollow fiber membrane 2 can be used as a filtration membrane, its pore diameter, porosity, film thickness, outer diameter, etc. are not particularly limited. Preferably, the hollow fiber membrane has an outer diameter of 20 to 3000 μm, a pore diameter of 0.001 to 5 μm, a porosity of 20 to 90%, and a film thickness of 5 to 300 μm.

また、中空糸膜２の材質は、特に限定されるものではない。好ましくは、ポリスルホン系樹脂、ポリアクリロニトリル、セルロース誘導体、ポリエチレンやポリプロピレンなどのポリオレフィン、ポリフッ化ビニリデンやポリテトラフルオロエチレンなどのフッ素系樹脂、ポリアミド、ポリエステル、ポリメタクリレート、ポリアクリレートなどが挙げられる。また、これらの樹脂の共重合体や一部に置換基を導入したものであってもよい。さらに、２種以上の樹脂を混合したものであってもよい。   The material of the hollow fiber membrane 2 is not particularly limited. Preferred examples include polysulfone resins, polyacrylonitrile, cellulose derivatives, polyolefins such as polyethylene and polypropylene, fluorine resins such as polyvinylidene fluoride and polytetrafluoroethylene, polyamides, polyesters, polymethacrylates, and polyacrylates. In addition, copolymers of these resins or those having a substituent introduced into a part thereof may be used. Furthermore, what mixed 2 or more types of resin may be used.

本実施形態の中空糸膜モジュールは、平型の中空糸膜モジュールであるので、収束体３の横断面は細長い輪郭形状を有する。また、収束体３における中空糸膜２の配列方向は、特に限定されない。好ましくは、中空糸膜２が、被処理液の流れ方向に対し、概ね平行に配列される。このように配列すれば、中空糸膜２が被処理液の流れの障害とならない。その結果、夾雑物を含む高汚濁液を処理する場合に、夾雑物の中空糸膜２への堆積や絞絡が軽減される。   Since the hollow fiber membrane module of the present embodiment is a flat hollow fiber membrane module, the cross section of the converging body 3 has an elongated contour shape. Further, the arrangement direction of the hollow fiber membranes 2 in the converging body 3 is not particularly limited. Preferably, the hollow fiber membranes 2 are arranged substantially parallel to the flow direction of the liquid to be treated. If arranged in this way, the hollow fiber membrane 2 does not become an obstacle to the flow of the liquid to be treated. As a result, when a highly contaminated liquid containing contaminants is processed, accumulation and constriction of contaminants on the hollow fiber membrane 2 are reduced.

さらに、中空糸膜２の配列方向は、中空糸膜２の長さ方向が縦方向、即ち上下方向であることが好ましい。このように配列すれば、夾雑物を洗浄するエアバブリング洗浄時に発生する被処理液の上昇流方向と中空糸膜２の延在方向とが概ね平行となる。その結果、夾雑物の堆積が防止される。   Furthermore, the arrangement direction of the hollow fiber membranes 2 is preferably such that the length direction of the hollow fiber membranes 2 is the vertical direction, that is, the vertical direction. If arranged in this way, the upward flow direction of the liquid to be treated generated during air bubbling cleaning for cleaning impurities and the extending direction of the hollow fiber membrane 2 are substantially parallel. As a result, accumulation of impurities is prevented.

また、本実施形態におけるハウジング４の各部の寸法は、図２と同様の断面図である図４に示されているように、幅Ａが３０ｍｍ、高さＢが７５ｍｍ、段差部４ａから上の高さＣが４５ｍｍ、段差部４ａから下の高さＤが３０ｍｍ、段差部４ａの幅Ｅが３ｍｍである。また、図３と同様の断面図である図５に示されているように、ハウジング４の長手方向の長さＦは１２５０ｍｍ、開口部の長手方向の長さＧが１１５０ｍｍ、そして段差部４ａの長手方向の幅Ｈが３ｍｍである。   In addition, the dimensions of each part of the housing 4 in this embodiment are as shown in FIG. 4, which is a cross-sectional view similar to FIG. 2, and the width A is 30 mm, the height B is 75 mm, and the upper part from the step 4a. The height C is 45 mm, the height D below the step portion 4a is 30 mm, and the width E of the step portion 4a is 3 mm. Further, as shown in FIG. 5, which is a cross-sectional view similar to FIG. 3, the longitudinal length F of the housing 4 is 1250 mm, the longitudinal length G of the opening is 1150 mm, and the step portion 4a The width H in the longitudinal direction is 3 mm.

また、ハウジング４の材質としては、中空糸膜モジュールの製造コスト低減の観点から汎用の安価なプラスチックが好ましい。例えば、ポリカーボネート、ポリスルホン、ポリオレフィン、ＰＶＣ（ポリ塩化ビニル）、アクリル樹脂、ＡＢＳ樹脂、変成ＰＰＥ（ポリフェニレンエーテル）が挙げられる。また、使用後に焼却処理が必要な場合には、燃焼により有毒ガスを出さずに、完全燃焼させることのできるポリオレフィン等の炭化水素系の樹脂が好ましい。また、機械的強度及び耐久性を有する材質であることが更に好ましい。   The material of the housing 4 is preferably a general-purpose inexpensive plastic from the viewpoint of reducing the manufacturing cost of the hollow fiber membrane module. Examples thereof include polycarbonate, polysulfone, polyolefin, PVC (polyvinyl chloride), acrylic resin, ABS resin, and modified PPE (polyphenylene ether). Further, when an incineration treatment is necessary after use, a hydrocarbon-based resin such as polyolefin that can be completely burned without emitting a toxic gas by combustion is preferable. Further, a material having mechanical strength and durability is more preferable.

先端が段差部４ａに達するようにハウジング４内に差し込まれた収束体３の先端部は、段差部４ａの高さ位置からハウジング４の開口端まで充填されている固定用樹脂部７によって互いに固定されると共に、ハウジング４の内壁部４ｂに対しても固定されている。固定用樹脂部７は、ハウジング４内で段差部４ａより上方に充填されているので、段差部４ａから下方は、固定用樹脂部７とハウジング４の内壁とによって囲まれハウジング４の長手方向に沿って延びる内部空間５とされている。この内部空間５は、ハウジング４の長手方向端部に形成された貫通路６により外部と連通している。   The front ends of the converging body 3 inserted into the housing 4 so that the front ends reach the stepped portion 4a are fixed to each other by the fixing resin portion 7 filled from the height position of the stepped portion 4a to the opening end of the housing 4. In addition, it is also fixed to the inner wall 4b of the housing 4. Since the fixing resin portion 7 is filled above the step portion 4 a in the housing 4, the lower portion from the step portion 4 a is surrounded by the fixing resin portion 7 and the inner wall of the housing 4 in the longitudinal direction of the housing 4. It is set as the internal space 5 extended along. The internal space 5 communicates with the outside through a through passage 6 formed at the longitudinal end of the housing 4.

収束体３を構成する各中空糸膜２の先端の開口端は、この内部空間５に向けて開口するように配置、固定用樹脂部７で互いに固定されている。このような構成により、処理液が、各中空糸膜２の外部から内部を通過し、内部空間５に導入され、さらに、貫通路６を通してモジュール外へ流れて濾過される。   The open ends at the tips of the hollow fiber membranes 2 constituting the converging body 3 are arranged so as to open toward the internal space 5 and are fixed to each other by a fixing resin portion 7. With such a configuration, the treatment liquid passes from the outside to the inside of each hollow fiber membrane 2, is introduced into the internal space 5, and further flows out of the module through the through passage 6 and is filtered.

また、固定用樹脂部７を構成する樹脂としては、エポキシ樹脂、不飽和ポリエステル樹脂、ポリウレタン樹脂、シリコーン系充填材、各種ホットメルト樹脂等を用いることができる。   Moreover, as resin which comprises the resin part 7 for fixation, an epoxy resin, unsaturated polyester resin, a polyurethane resin, a silicone type filler, various hot-melt resins, etc. can be used.

また、固定用樹脂部７は、中空糸膜２の収束体３を担持し、かつ、固定用樹脂が嵌め込まれたハウジング４の剛性を確保して、使用時の耐圧性を発揮する機能を有する。このため、固定用樹脂部７は、所定の範囲の硬度を有することが好ましい。すなわち、固定用樹脂部７の硬度が、１０秒後のショアＡ硬度で８０度を下回ると、耐圧性を維持するために、多くの樹脂量が必要となり、中空糸膜モジュール１のコストを高騰させる要因となる。また、固定用樹脂部７の硬度が、１０秒後のショアＡ硬度で９９度を上回る場合は、固定用樹脂部７自体が割れ易くなる。したがって、固定用樹脂部７の硬度は、１０秒後のショアＡ硬度で８０〜９９度であることは好ましい。   In addition, the fixing resin portion 7 has a function of supporting the converging body 3 of the hollow fiber membrane 2 and ensuring the rigidity of the housing 4 in which the fixing resin is fitted and exhibiting pressure resistance during use. . For this reason, it is preferable that the fixing resin portion 7 has a hardness in a predetermined range. That is, when the hardness of the fixing resin portion 7 is less than 80 degrees in Shore A hardness after 10 seconds, a large amount of resin is required to maintain pressure resistance, and the cost of the hollow fiber membrane module 1 increases. It becomes a factor to make. Further, when the hardness of the fixing resin portion 7 exceeds 99 degrees in Shore A hardness after 10 seconds, the fixing resin portion 7 itself is easily cracked. Therefore, it is preferable that the hardness of the fixing resin portion 7 is 80 to 99 degrees in Shore A hardness after 10 seconds.

本実施形態では、ハウジング４内の左右の両段差部４ａ上に、段差部４ａの上方のハウジング内壁に当接してハウジング４の長手方向に延びる板（帯）状の弾性体９が、それぞれ、配置されている。弾性体９は、図３に示されているように、ハウジング４の開口の長手方向ほぼ全長に亘って連続して延び、ハウジング４の内壁部４ｂに固定用樹脂部７で接着されており、ハウジング４の段差部４ａに接着用樹脂部８で接着されている。   In the present embodiment, a plate (band) -like elastic body 9 extending in the longitudinal direction of the housing 4 in contact with the inner wall of the housing above the stepped portion 4a on the left and right stepped portions 4a in the housing 4, respectively. Has been placed. As shown in FIG. 3, the elastic body 9 extends continuously over substantially the entire length in the longitudinal direction of the opening of the housing 4, and is bonded to the inner wall portion 4 b of the housing 4 with a fixing resin portion 7. It is bonded to the stepped portion 4 a of the housing 4 with an adhesive resin portion 8.

本実施形態では、この状態で、固定用樹脂が中空糸膜２の先端部相互間の空間ならびに、収束体３とハウジング４の内壁との間の空間内に充填され、これらの空間を封止している。   In this embodiment, in this state, the fixing resin is filled in the space between the tip portions of the hollow fiber membrane 2 and the space between the converging body 3 and the inner wall of the housing 4 to seal these spaces. is doing.

接着用樹脂部８を構成する樹脂の材質は特に限定されず、例えば、ウレタン樹脂、シリコン樹脂又はアクリル樹脂等の公知の樹脂を用いることができる。そして、接着用樹脂部８の材質は、中空糸膜モジュールの用いられる環境や、通液される液体の種類に応じて選定されることが好ましい。   The material of the resin constituting the bonding resin portion 8 is not particularly limited, and for example, a known resin such as a urethane resin, a silicon resin, or an acrylic resin can be used. The material of the adhesive resin portion 8 is preferably selected according to the environment in which the hollow fiber membrane module is used and the type of liquid to be passed.

弾性体９の材質の硬度については、特に限定はされないが、中空糸膜モジュールに十分な耐圧性を与えるため、弾性体９の硬度は、１０秒後のショアＡ硬度で１０から８０度の範囲が好ましい。   The hardness of the material of the elastic body 9 is not particularly limited, but in order to give sufficient pressure resistance to the hollow fiber membrane module, the hardness of the elastic body 9 is in the range of 10 to 80 degrees in Shore A hardness after 10 seconds. Is preferred.

また、弾性体９の材質は特に限定されものではなく、弾性体９の材質は、中空糸膜モジュールの用いられる環境や、通液される液体の種類に応じて選定され、例えば、エチレンプロピレンゴム（ＥＰＤＭ）、二トリルゴム（ＮＢＲ）、ウレタンゴム、シリコンゴム、フッ素ゴム、クロロプレンゴム（ＣＲ）、アクリルゴム、ブチルゴム等のゴムを用いることができる。又、スチレン系エラストマ、オレフィン系エラストマ、塩ビ系エラストマ、ウレタン系エラストマ、エステル系エラストマ、アミド系エラストマなどの熱可塑性エラストマも用いることができる。   The material of the elastic body 9 is not particularly limited, and the material of the elastic body 9 is selected according to the environment in which the hollow fiber membrane module is used and the type of liquid to be passed. For example, ethylene propylene rubber (EPDM), nitrile rubber (NBR), urethane rubber, silicon rubber, fluorine rubber, chloroprene rubber (CR), acrylic rubber, butyl rubber, and the like can be used. Thermoplastic elastomers such as styrene elastomers, olefin elastomers, vinyl chloride elastomers, urethane elastomers, ester elastomers, and amide elastomers can also be used.

このように弾性体９を設けたことにより、固定用樹脂部７とハウジング４の内壁との接着界面に対する応力集中が、弾性体９にも分散される。その結果、接着界面に発生する最大応力を減らして固定用樹脂部７とハウジング４との間の剥離の発生が大幅に低減される。これにより、固定用樹脂部７とハウジング４との接着界面での剥離の進行、固定用樹脂部７の部分的な破壊、更にはこのような破壊に起因するリークの発生が抑制される。   By providing the elastic body 9 in this way, the stress concentration on the bonding interface between the fixing resin portion 7 and the inner wall of the housing 4 is dispersed also in the elastic body 9. As a result, the maximum stress generated at the bonding interface is reduced, and the occurrence of peeling between the fixing resin portion 7 and the housing 4 is greatly reduced. As a result, the progress of peeling at the bonding interface between the fixing resin portion 7 and the housing 4, the partial destruction of the fixing resin portion 7, and the occurrence of leakage due to such destruction are suppressed.

これにより、ハウジング４を厚肉化したり、補強リブを設けたりしなくとも、封止樹脂である固定用樹脂部７とハウジング４との間の剥離の発生が抑制されるので、中空糸膜モジュールのコストアップを抑制しつつ、ハウジングおよび中空糸膜モジュールの耐久性を高めることができる。   Thereby, even if the housing 4 is not thickened or provided with reinforcing ribs, the occurrence of peeling between the fixing resin portion 7 as the sealing resin and the housing 4 is suppressed, so that the hollow fiber membrane module Thus, the durability of the housing and the hollow fiber membrane module can be enhanced.

このような構成を有する中空糸膜モジュールを製造する際には、まず、切り揃えた多数（例えば１５００本程度）の中空糸膜（外径２８００μｍ）を細長い横断面形状を有するように束ね収束体３を形成する。次いで、図６に示されているように、収束体３の両端部を、細長い矩形の開口を有し内部に弾性体９のシートが配置されたポッティング容器１０内に差し込み、ポッティング容器１０内に、固定用樹脂を注入する。樹脂を硬化させた後に、ポッティング容器１０を取り外し、弾性体９のシートと一体となった固定用樹脂部７を形成した。次いで、固定用樹脂部ハウジング４を取り付け中空糸膜モジュールとする（図７）。   When producing a hollow fiber membrane module having such a configuration, first, a number of aligned (for example, about 1500) hollow fiber membranes (outer diameter of 2800 μm) are bundled so as to have an elongated cross-sectional shape and converged. 3 is formed. Next, as shown in FIG. 6, both ends of the converging body 3 are inserted into a potting container 10 having an elongated rectangular opening and a sheet of the elastic body 9 disposed therein. Inject the fixing resin. After the resin was cured, the potting container 10 was removed, and the fixing resin portion 7 integrated with the sheet of the elastic body 9 was formed. Next, the fixing resin part housing 4 is attached to form a hollow fiber membrane module (FIG. 7).

次いで、ポッティングン容器１０から取り外した中空糸膜２と一体となった固定用樹脂部７の端面をカットして中空糸膜の先端を開口させる。次に、中空糸膜２の先端が開口された固定用樹脂部７をハウジング４の段差部４ａへ接着樹脂８で接着する(図２)。   Next, the end surface of the fixing resin portion 7 integrated with the hollow fiber membrane 2 removed from the potting container 10 is cut to open the tip of the hollow fiber membrane. Next, the fixing resin portion 7 having the open end of the hollow fiber membrane 2 is bonded to the step portion 4a of the housing 4 with the adhesive resin 8 (FIG. 2).

本発明の前記実施形態に限定されることなく、特許請求の範囲に記載された技術的思想の範囲内で種々の変更、変形が可能である。
上記実施形態では、固定用樹脂部を形成するために用いる容器の中に、弾性体を入れた状態で固定用樹脂を容器に注入される構成であったが、固定用樹脂部と弾性体を予め接着することなく、ハウジングへ固定用樹脂と弾性体を別々に入れてから封止用樹脂を流し込んで樹脂部とした中空糸膜モジュールにも適用される。 Without being limited to the above-described embodiment of the present invention, various changes and modifications can be made within the scope of the technical idea described in the claims.
In the above embodiment, the fixing resin is injected into the container with the elastic body in the container used to form the fixing resin portion. The present invention is also applied to a hollow fiber membrane module in which a fixing resin and an elastic body are separately put into a housing without being bonded in advance, and then a sealing resin is poured into the housing to form a resin portion.

また、図８に示すように、ポッティングン容器から取り外した中空糸膜２と一体となった固定用樹脂部７の端面を刃物Ｂでカットして中空糸膜の先端を開口させ、図２のように、固定用樹脂部７をハウジング４の段差部４ａに接着樹脂で接着する。   Further, as shown in FIG. 8, the end surface of the fixing resin portion 7 integrated with the hollow fiber membrane 2 removed from the potting container is cut with a blade B to open the tip of the hollow fiber membrane, As described above, the fixing resin portion 7 is bonded to the step portion 4 a of the housing 4 with an adhesive resin.

また、上述した実施形態では、中空糸膜の収束体の両端にそれぞれハウジングを設けた例について説明したが、収束体の一方の端部にのみハウジングを設けた中空糸膜モジュールにも適用される。   In the above-described embodiment, the example in which the housing is provided at both ends of the converging body of the hollow fiber membrane has been described. However, the embodiment is also applied to the hollow fiber membrane module in which the housing is provided only at one end of the converging body. .

また、上述した実施形態では、２枚の弾性体が収束体の両側に分かれて配置されているが、収束体の両側にそれぞれ設けた弾性体どうしをハウジングの端部付近で連結し、ハウジングの開口の全周に沿って収束体を囲む構成でもよい。   In the above-described embodiment, the two elastic bodies are arranged separately on both sides of the converging body. However, the elastic bodies provided on both sides of the converging body are connected to each other in the vicinity of the end of the housing. It may be configured to surround the converging body along the entire circumference of the opening.

以下、本発明の実施例について説明する。
実施例では、上記実施形態と同様の構造を有する中空糸膜モジュールを以下のようにして製造した。 Examples of the present invention will be described below.
In Examples, a hollow fiber membrane module having the same structure as that of the above embodiment was manufactured as follows.

２０００ｍｍの長さに切り揃えたポリフッ化ビニリデン製中空糸膜（外径２８００μｍ）を１５００本用意した。次いで、長さ１１５４ｍｍ、幅２６ｍｍ、深さ５５ｍｍ、厚さ２ｍｍのポリエチレン製の容器を用意し、容器内壁の下方の両側に、長さ１１５０ｍｍ、幅３ｍｍ、高さ３０ｍｍのエチレンプロピレン製の弾性体となるゴムシート（硬度：１０秒後ショアＡ硬度７０度）を配置した。   1500 hollow fiber membranes (outer diameter: 2800 μm) made of polyvinylidene fluoride cut to a length of 2000 mm were prepared. Next, a polyethylene container having a length of 1154 mm, a width of 26 mm, a depth of 55 mm, and a thickness of 2 mm is prepared, and an elastic body made of ethylene propylene having a length of 1150 mm, a width of 3 mm, and a height of 30 mm is provided on both sides below the inner wall of the container. A rubber sheet (hardness: Shore A hardness 70 degrees after 10 seconds) was placed.

次に、その容器内に、中空糸膜の収束体の先端部を入れて、更に、固定用樹脂としてのポリウレタン樹脂（日本ポリウレタン製、ニッポラン４２２４／４４０３、硬化時硬度：１０秒後ショアＡ硬度９７度）を注入し、樹脂を硬化させた。硬化後に容器を取り外し、ゴムシートと一体となった固定用樹脂部を形成した。   Next, the tip of the converging body of the hollow fiber membrane is placed in the container, and a polyurethane resin as a fixing resin (Nippon Polyurethane, Nippon Run 4224/4403, hardness at curing: Shore A hardness after 10 seconds) 97 degrees) was injected to cure the resin. After curing, the container was removed to form a fixing resin part integrated with the rubber sheet.

また、中空糸膜の他端についても同様の作業を行い、ゴムシートと一体となった固定用樹脂部を有する中空糸膜の収束体を作成した。   Moreover, the same operation | work was performed also about the other end of the hollow fiber membrane, and the convergence body of the hollow fiber membrane which has the resin part for fixation integrated with the rubber sheet was created.

次に、両端の固定用樹脂部を、端部から２５ｍｍの長さで切断した。この際に、固定用樹脂部と一体となっていたゴムシート一緒に切断される。その結果、ゴムシートの残存部分が弾性体となる。これにより、弾性体が接着され、かつ、各中空糸膜の端面が開口された樹脂固定部を有する中空糸膜の収束体を得た。   Next, the fixing resin portions at both ends were cut to a length of 25 mm from the end portions. At this time, the rubber sheet integrated with the fixing resin portion is cut together. As a result, the remaining part of the rubber sheet becomes an elastic body. Thereby, the convergence body of the hollow fiber membrane which has the resin fixing | fixed part to which the elastic body was adhere | attached and the end surface of each hollow fiber membrane was opened was obtained.

次に、この固定用樹脂部を、ダイヤラックＥＸ１８Ｚ（ＵＭＧ ＡＢＳ（株）社製）のハウジングに配置するに先立ち、ハウジングの開口の段差部に接着用樹脂（ポリウレタン樹脂（ハンツマン・アドバンスド・マテリアルズ（株）製、Ａｒａｌｄａｉｔｅ ３０１８Ｂ／２０２３、硬化後硬度：１０秒後ショアＡ硬度４０度）を、シリンジを用いて垂れ下がらない程度に定量塗布し、約５分間増粘させた。そして、先の固定用樹脂部を段差部に配置し、約１２時間放置した。その後、ウレタン樹脂（日本ポリウレタン製、ニッポラン４２２４／４４０３）を、ハウジング内、及び中空糸膜間を満たすように注入し、硬化させた。さらに、もう一方の端面についても、同様の作業を行い、固定用樹脂部及び接着樹脂から構成される固定用樹脂部内に弾性体を設けた中空糸膜モジュールを得た。   Next, prior to disposing the fixing resin portion on the housing of Dialac EX18Z (manufactured by UMG ABS Co., Ltd.), an adhesive resin (polyurethane resin (Huntsman Advanced Materials) is formed on the step portion of the housing opening. Araldaite 3018B / 2023 manufactured by Co., Ltd., hardness after curing: Shore A hardness 40 degrees after 10 seconds) was applied quantitatively using a syringe so as not to sag, and thickened for about 5 minutes. The fixing resin part was placed on the step part and left for about 12 hours, after which urethane resin (Nippon Polyurethane, Nipponran 4224/4403) was injected and cured so as to fill the housing and between the hollow fiber membranes. In addition, the same operation is performed on the other end surface, and the fixing resin portion composed of the fixing resin portion and the adhesive resin is used. A hollow fiber membrane module in which an elastic body was provided was obtained.

このようにして製造した中空糸膜モジュールのハウジングの両端を支持して、両端を結ぶ線を基準として、ハウジング中央部の下方への撓み量を測定した。その結果、ハウジングの撓み量は、１０ｍｍであり、ハウジングと固定用樹脂部に割れや剥離は発生していなかった。   The both ends of the housing of the hollow fiber membrane module manufactured in this way were supported, and the amount of bending downward of the central portion of the housing was measured with reference to the line connecting the ends. As a result, the amount of bending of the housing was 10 mm, and no cracking or peeling occurred in the housing and the fixing resin portion.

次に、耐圧性の試験のために、製作した中空糸膜モジュールの中空糸膜を、長さ２０ｍｍを残して切断し、切断した中空糸膜の膜面、及び端面を、ウレタン樹脂（日本ポリウレタン製、ニッポラン４２２４／４４０３）で全て封止した中空糸膜モジュール試験体を作成した。この中空糸膜モジュール試験体では、ハウジングの内部空間が、通路を除いて密閉されている。   Next, for the pressure resistance test, the hollow fiber membrane of the manufactured hollow fiber membrane module was cut leaving a length of 20 mm, and the membrane surface and end surface of the cut hollow fiber membrane were made of urethane resin (Nippon Polyurethane). A hollow fiber membrane module test body was produced that was completely sealed with NIPPORAN 4224/4403). In this hollow fiber membrane module test body, the internal space of the housing is sealed except for the passage.

耐圧性の試験を行うにあたり、ハウジングの内部空間にシリンジで水を充填し、テストポンプ（（株）キョーワ製Ｔ−１００）に接続されたホースを管通路に接続した。そして、テストポンプにより、ハウジングの内部空間に水圧をかけたところ、水圧が１．２ＭＰａとなったときに、ハウジングと固定用樹脂部との間に剥離が生じ破壊した。   In conducting the pressure resistance test, water was filled into the internal space of the housing with a syringe, and a hose connected to a test pump (K-100, manufactured by Kyowa Corporation) was connected to the pipe passage. And when water pressure was applied to the internal space of the housing by the test pump, when the water pressure reached 1.2 MPa, peeling occurred between the housing and the fixing resin portion, resulting in destruction.

（比較例）
比較例の中空糸膜モジュールは、ハウジングと収束体で挟まれた空間の固定用樹脂部内に弾性体を設けない点を除いて、実施例で製造した中空糸膜モジュールと同じ構造を有する。
上記実施例と同様にして、比較例の中空糸膜モジュールのハウジングの撓み量を測定したところ、撓み量は、１０ｍｍであり、ハウジングと固定用樹脂部との剥離がみられた。
そして、上記の実施例と同様にして、ハウジングの内部空間に水圧をかけたところ、水圧が０．９ＭＰａとなったときに、ハウジングと固定用樹脂部との間に剥離が生じ破壊した。 (Comparative example)
The hollow fiber membrane module of the comparative example has the same structure as the hollow fiber membrane module manufactured in the example except that the elastic body is not provided in the fixing resin portion in the space sandwiched between the housing and the converging body.
When the amount of bending of the housing of the hollow fiber membrane module of the comparative example was measured in the same manner as in the above example, the amount of bending was 10 mm, and peeling between the housing and the fixing resin portion was observed.
Then, when water pressure was applied to the internal space of the housing in the same manner as in the above example, when the water pressure reached 0.9 MPa, peeling occurred between the housing and the fixing resin portion, resulting in destruction.

したがって、上記の実施例と比較例との比較から、ハウジング自体の曲げ剛性を高めなくとも、樹脂部に弾性体を設けたことにより、撓みによるハウジングと固定用樹脂の剥離を抑制ならびに封止樹脂自体の破損を防止して、中空糸膜モジュールの耐圧性能を大幅に向上させることができたことが分かる。   Therefore, from the comparison between the above-described embodiment and the comparative example, it is possible to suppress the separation of the housing and the fixing resin due to the bending and to provide a sealing resin by providing an elastic body in the resin portion without increasing the bending rigidity of the housing itself. It can be seen that the pressure resistance performance of the hollow fiber membrane module could be greatly improved by preventing damage to itself.

本発明の好ましい実施形態の平型中空糸膜モジュールの構成を示す概略的な斜視図である。It is a schematic perspective view which shows the structure of the flat type hollow fiber membrane module of preferable embodiment of this invention. 図１のII−II線に沿った部分断面図である。It is a fragmentary sectional view along the II-II line of FIG. 図１のIII−III線に沿った部分断面図である。It is a fragmentary sectional view in alignment with the III-III line of FIG. 図１のII−II線に沿ったハウジングの断面図である。It is sectional drawing of the housing along the II-II line | wire of FIG. 図１のIII−III線に沿ったハウジング断面図である。FIG. 3 is a sectional view of the housing along the line III-III in FIG. 1. 本実施形態の中空糸膜モジュールの製造方法を説明する図面である。It is drawing explaining the manufacturing method of the hollow fiber membrane module of this embodiment. 本実施形態の中空糸膜モジュールの製造方法を説明する図面である。It is drawing explaining the manufacturing method of the hollow fiber membrane module of this embodiment. 本実施形態の中空糸膜モジュールの他の製造方法を説明する図面である。It is drawing explaining the other manufacturing method of the hollow fiber membrane module of this embodiment.

符号の説明Explanation of symbols

１：中空糸膜モジュール
２：中空糸膜
３：収束体
４：ハウジング
４ａ：段差部
４ｂ：内壁部
５：内部空間
６：貫通路
７：固定用樹脂部
８：接着用樹脂部
９：弾性体
１０：ポッティング容器 1: Hollow fiber membrane module 2: Hollow fiber membrane 3: Converging body 4: Housing 4a: Stepped portion 4b: Inner wall portion 5: Inner space 6: Through passage 7: Fixing resin portion 8: Adhesive resin portion 9: Elastic body 10: Potting container

Claims (3)

平型中空糸膜モジュールであって、
複数の中空糸膜が細長い矩形状の横断面を有するように束ねられ収束体と、
前記収束体の端部が挿入され固定保持される細長い開口を有する細長いハウジングと、
前記ハウジングの開口に挿入された前記収束体の各中空糸膜の端部を、各中空糸膜の開口端が前記ハウジング内の処理液の通過する内部空間に向けて開口した状態で互いに且つ前記ハウジングの内壁に対して固定するとともに、前記各中空糸膜の端部相互間の空間および前記各中空糸膜の端部と前記ハウジングの内壁との間の空間を封止する固定用樹脂部と、
前記固定用樹脂部の外周面に前記ハウジングの長手方向に沿って延びるように配置された弾性体と、を備え、
前記弾性体が前記ハウジングの内壁に接着用樹脂で接着されている、
ことを特徴とする中空糸膜モジュール。 A flat hollow fiber membrane module,
A converging body bundled with a plurality of hollow fiber membranes having an elongated rectangular cross section;
An elongated housing having an elongated opening into which the end of the converging body is inserted and fixed;
The ends of the hollow fiber membranes of the converging body inserted into the opening of the housing are mutually connected in a state where the open ends of the hollow fiber membranes open toward the internal space through which the processing liquid in the housing passes. A fixing resin portion for fixing to the inner wall of the housing and sealing the space between the end portions of each hollow fiber membrane and the space between the end portion of each hollow fiber membrane and the inner wall of the housing; ,
An elastic body arranged on the outer peripheral surface of the fixing resin portion so as to extend along the longitudinal direction of the housing,
The elastic body is bonded to the inner wall of the housing with an adhesive resin;
A hollow fiber membrane module characterized by the above. 前記弾性体は、前記固定用樹脂部を構成する材料より柔らかく、１０秒後のショアＡ硬度が１０から８０度の範囲である材料から構成されている、
請求項１に記載の中空糸膜モジュール。 The elastic body is made of a material that is softer than the material constituting the fixing resin part and has a Shore A hardness of 10 to 80 degrees after 10 seconds.
The hollow fiber membrane module according to claim 1. 前記弾性体は、前記収束体と前記ハウジングの長手方向の内壁との間で、該内壁に沿って帯状に配置されている、
請求項１又は２に記載の中空糸膜モジュール。 The elastic body is disposed in a belt shape along the inner wall between the converging body and the inner wall in the longitudinal direction of the housing.
The hollow fiber membrane module according to claim 1 or 2.
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