JP2015181986A - Hollow fiber membrane module and manufacturing method of hollow fiber membrane module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hollow fiber membrane module which can widen the width of selection of case material, can reduce the number of components and, at the same time, is excellent in tight sealing between a seal part for sealing a gap between hollow fiber membranes and a case, and to provide a manufacturing method of the hollow fiber membrane module.SOLUTION: In such a state that an adhesion part between a first seal part 140a and an outer case 110 and an adhesion part between the first seal part 140a and an inner case 120 are respectively stripped, elastomer seal parts 151a, 152a are respectively provided on a gap between the first seal part 140a and the outer case 110 and on a gap between the first seal part 140a and the inner case 120 and, in such a state that an adhesion part between a second seal part 140b and the outer case 110 and an adhesion part between the second seal part 140b and the inner case 120 are respectively stripped, elastomer seal parts 151b, 152b are respectively provided on a gap between the second seal part 140b and the outer case 110 and on a gap between the second seal part 140b and the inner case 120.

Description

  The present invention relates to a hollow fiber membrane module and a method for producing the hollow fiber membrane module.

  The hollow fiber membrane module generally includes a case and a plurality of hollow fiber membranes filled in the case. In the vicinity of the opening of the case, the gap between the case and the plurality of hollow fiber membranes is sealed in a state where the hollow interior of each hollow fiber membrane is opened, and the plurality of hollow fiber membranes are attached to the case. A sealing and fixing portion (potting portion) for fixing to the substrate is provided.

  Here, as for the material of the case, the material of the sealing and fixing part (epoxy resin or the like) is used so that the adhesive part between the case and the sealing and fixing part does not peel off due to thermal expansion and contraction of the case and the sealing and fixing part. ) And a material whose linear expansion coefficient is equivalent. However, cases made of such materials are usually not very strong. Therefore, in such a hollow fiber membrane module, the above case cannot often be used as a case exposed to the outside. Therefore, in the case of the hollow fiber membrane module as described above, it is often used in a state of being mounted in a housing made of a metal (aluminum or the like) or a hard resin material (PPS or the like). Such a conventional hollow fiber membrane module will be described with reference to FIG. FIG. 10 is a schematic cross-sectional view of a conventional hollow fiber membrane module.

  The hollow fiber membrane module 600 includes a cylindrical outer case 610, a bottomed cylindrical inner case 620, and a plurality of hollow fiber membranes 630 filled in an annular gap between the outer case 610 and the inner case 620. I have. Seal fixing portions (potting portions) 640a and 640b are provided on both end sides of the outer case 610 and the inner case 620, respectively. As described above, as the material of the outer case 610 and the inner case 620, a material having a linear expansion coefficient equivalent to the material of the sealing fixing portions 640a and 640b (sealing material such as epoxy resin) is selected. Accordingly, since the strength of these cases is not so high, the hollow fiber membrane module 600 is mounted inside a cylindrical housing 700 having high rigidity. Thus, in the prior art, apart from the hollow fiber membrane module 600, a highly rigid housing 700 is required, which increases the number of components.

  Further, in the hollow fiber membrane module 600 configured as described above, a flow path that passes through the hollow interior of each hollow fiber membrane 630 and two flow paths that pass through the exterior of the hollow fiber membrane 630 are formed. It is used so that each fluid may flow through the flow path. Therefore, high sealing performance is often required between the hollow fiber membrane module 600 and the housing 700. In the illustrated conventional example, O-rings O1, O2, and O3 made of rubber-like elastic bodies are mounted at three locations, respectively. In order to sufficiently enhance the sealing performance by these O-rings O1, O2, and O3, the concentricity between the outer case 610 and the housing 700 must be increased. In addition, although not particularly illustrated, a highly rigid pipe-like member is inserted into the hollow of the inner case 620, and an annular gap between the pipe-like member and the inner case 620 is sealed with an O-ring or the like. Sometimes. In this case, the concentricity between the pipe-shaped member and the inner case 620 must also be increased. As described above, the outer case 610 and the inner case 620 may be required to have high dimensional accuracy. In addition, if necessary, a part of these cases must be cut by post-processing such as cutting to increase the concentricity with the housing 700 or the like.

Japanese Patent No. 4516333 Japanese Patent No. 5354248

  The object of the present invention is to increase the range of selection of the case material, and to reduce the number of parts while improving the sealing performance between the sealing portion and the case for sealing the gap between the hollow fiber membranes. An object of the present invention is to provide an excellent hollow fiber membrane module and a method for producing the hollow fiber membrane module.

  The present invention employs the following means in order to solve the above problems.

The hollow fiber membrane module of the present invention is
Case and
A plurality of hollow fiber membranes filled in the case;
In a state where the hollow interior of each hollow fiber membrane is opened, a sealing portion that seals gaps between the plurality of hollow fiber membranes;
In a hollow fiber membrane module comprising:
The sealing portion is formed by being cured after a sealing material is injected in a state where a plurality of hollow fiber membranes are filled in the case, and
An elastic seal part is provided in a gap between the sealing part and the case in a state where the adhesive part between the sealing part and the case is peeled off.

  According to the present invention, the sealing portion and the case are not sealed by adhesion of the sealing portion to the case, but are sealed by an elastic sealing portion. Thereby, sealing performance can be improved. Moreover, the adhesion part between a sealing part and a case exists in the peeled state. Therefore, it is not necessary to adopt materials having the same linear expansion coefficient as the material of the sealing portion and the material of the case. Thereby, the selection range of the case material can be widened. Therefore, it is not necessary to mount the hollow fiber membrane module in a highly rigid housing, and the number of parts can be reduced.

Here, in the manufacturing method of the hollow fiber membrane module,
Filling the case with a plurality of hollow fiber membranes and injecting a sealing material in a state where the opening of the case is closed by a jig; and
Removing the jig after the sealing material is cured, and cutting the part of the cured part of the sealing material to create the sealing portion; and
A step of peeling the adhesive portion between the sealing portion and the case by heat treatment;
Providing an elastic seal part in the gap between the sealing part and the case;
It is characterized by including.

In addition, the hollow fiber membrane module according to another invention,
A cylindrical outer case,
An inner case disposed inside the outer case and having a hollow portion;
A plurality of hollow fiber membranes filled in an annular gap between the outer case and the inner case;
A first sealing portion that seals gaps between the plurality of hollow fiber membranes in a state where the hollow interior of each hollow fiber membrane is opened on one end side of the outer case and the inner case;
A second sealing portion that seals gaps between the plurality of hollow fiber membranes in a state where the hollow interior of each hollow fiber membrane is opened on the other end side of the outer case and the inner case;
A hollow fiber membrane module comprising:
The side wall of the outer case is provided with a first through hole that communicates from the annular gap to the outside of the outer case, and the side wall of the inner case has a second through hole that communicates from the hollow portion to the annular gap. In the provided hollow fiber membrane module,
The first sealing portion and the second sealing portion are formed by being cured after the sealing material is injected in a state where a plurality of hollow fiber membranes are filled in the annular gap,
In a state where the adhesive portion between the first sealing portion and the outer case and the adhesive portion between the first sealing portion and the inner case are peeled off, the first sealing portion and the outer case A seal part made of an elastic body is provided in the gap between and the gap between the first sealing part and the inner case,
In addition, the second sealing portion and the outer case in a state where the adhesive portion between the second sealing portion and the outer case and the adhesive portion between the second sealing portion and the inner case are peeled off, respectively. And a gap between the second sealing portion and the inner case are provided with an elastic seal portion, respectively.

  According to the present invention, between the first sealing portion and the outer case, between the first sealing portion and the inner case, between the second sealing portion and the outer case, and between the second sealing portion and the inner case. The case is not sealed by adhesion of each sealing part to each case, but is sealed by an elastic seal part. Thereby, sealing performance can be improved. Also, between the first sealing portion and the outer case, between the first sealing portion and the inner case, between the second sealing portion and the outer case, and between the second sealing portion and the inner case. The adhesive part is peeled off. Therefore, it is not necessary to adopt materials having the same linear expansion coefficient as the material of each sealing portion and the material of each case. Thereby, the range of selection of each case material can be widened. Therefore, it is not necessary to mount the hollow fiber membrane module in a highly rigid housing, and the number of parts can be reduced.

  Here, the inner peripheral surface of the outer case and the outer peripheral surface of the inner case are provided with annular grooves on one end side and the other end side, respectively, and the first sealing portion and the second sealing portion are formed in an annular shape. It is preferable that an annular protrusion that fits into the groove is formed.

  Thereby, even if the adhesion part between each sealing part and each case is peeled, it can suppress that each sealing part moves with respect to each case.

Moreover, in the above method for producing a hollow fiber membrane module,
Injecting a sealing material in a state where a plurality of hollow fiber membranes are filled in the annular gap and the opening of the annular gap is closed by a jig;
Removing the jig after the sealing material is cured, and cutting a part of the cured part of the sealing material to create the first sealing portion and the second sealing portion;
By heat treatment, an adhesive portion between the first sealing portion and the outer case, an adhesive portion between the first sealing portion and the inner case, an adhesive portion between the second sealing portion and the outer case And the step of peeling off the adhesive portions between the second sealing portion and the inner case,
A gap between the first sealing portion and the outer case, a gap between the first sealing portion and the inner case, a gap between the second sealing portion and the outer case, and a second sealing Providing a seal portion made of an elastic body in a gap between the portion and the inner case,
It is characterized by including.

Here, annular notches are provided on the inner periphery of both ends of the outer case, and annular notches are provided on the outer periphery of both ends of the inner case, respectively.
When the jig is removed after the sealing material is cured, the jig is provided with annular projections that are respectively fitted to the notches, so that the gap between the first sealing part and the outer case is removed. The seal portion is provided between the first sealing portion and the inner case, between the second sealing portion and the outer case, and between the second sealing portion and the inner case. These gaps are preferably formed.

  Thereby, it is not necessary to form an annular gap for providing the seal portion by cutting or the like, and an increase in the number of manufacturing steps can be suppressed.

  In addition, the said seal | sticker part is good in the liquid seal | sticker which becomes liquid at the time of application | coating, and becomes an elastic body by hardening after that.

  In addition, said each structure can be employ | adopted combining as much as possible.

  As described above, according to the present invention, the selection range of the case material can be widened, and the sealing performance between the sealing portion and the case can be improved while the number of parts can be reduced. .

FIG. 1 is a plan view of a hollow fiber membrane module according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of a hollow fiber membrane module according to an embodiment of the present invention. FIG. 3 is a diagram showing a manufacturing process of the hollow fiber membrane module according to the embodiment of the present invention. FIG. 4 is a view showing a manufacturing process of the hollow fiber membrane module according to the embodiment of the present invention. FIG. 5 is a diagram showing a manufacturing process of the hollow fiber membrane module according to the embodiment of the present invention. FIG. 6 is a diagram showing a manufacturing process of the hollow fiber membrane module according to the embodiment of the present invention. FIG. 7 is a diagram showing a manufacturing process of the hollow fiber membrane module according to the embodiment of the present invention. FIG. 8 is a diagram showing a manufacturing process of the hollow fiber membrane module according to the embodiment of the present invention. FIG. 9 is a view showing a manufacturing process of the hollow fiber membrane module according to the embodiment of the present invention. FIG. 10 is a schematic cross-sectional view of a conventional hollow fiber membrane module.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be exemplarily described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. .

(Example)
With reference to FIGS. 1-9, the hollow fiber membrane module which concerns on the Example of this invention is demonstrated. In addition, the hollow fiber membrane module which concerns on a present Example can be utilized suitably for a humidifier or a dehumidifier.

<Hollow fiber membrane module>
In particular, the configuration of the hollow fiber membrane module according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan view of a hollow fiber membrane module according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of a hollow fiber membrane module according to an embodiment of the present invention. 2 is a sectional view taken along line XX in FIG. In the following description, in the hollow fiber membrane module, the right side in FIG. 2 is referred to as “one end side” and the left side in FIG. 2 is referred to as “other end side”.

The hollow fiber membrane module 100 includes a cylindrical outer case 110 and an inner case 120 disposed inside the outer case 110 and having a hollow portion. In the present embodiment, the outer case 110 is constituted by a cylindrical member, and the inner case 120 is constituted by a bottomed cylindrical member. The outer case 110 and the inner case 120 according to the present embodiment are made of a highly rigid material (for example, a metal such as aluminum or a hard resin such as PPS).

  Further, the hollow fiber membrane module 100 includes a plurality of hollow fiber membranes 130 filled in an annular gap S between the outer case 110 and the inner case 120. Further, the hollow fiber membrane module 100 is a first member that seals gaps between the plurality of hollow fiber membranes 130 at one end side of the outer case 110 and the inner case 120 with the hollow interior of each hollow fiber membrane 130 open. The sealing part 140a is provided. Further, the hollow fiber membrane module 100 seals the gaps between the plurality of hollow fiber membranes 130 with the hollow interior of each hollow fiber membrane 130 open at the other end side of the outer case 110 and the inner case 120. Two sealing portions 140b are provided. The first sealing portion 140a and the second sealing portion 140b are formed by curing a sealing material such as an epoxy resin.

  However, in the hollow fiber membrane module 100 according to the present embodiment, the bonding portion between the first sealing portion 140a and the outer case 110 and the bonding portion between the first sealing portion 140a and the inner case 120 are respectively It has been peeled off. Further, the adhesive portion between the second sealing portion 140b and the outer case 110 and the adhesive portion between the second sealing portion 140b and the inner case 120 are also peeled off.

  In addition, annular notches 112a and 112b are provided on the inner periphery of both ends of the outer case 110, respectively. These notches 112a and 112b form an annular gap between the first sealing portion 140a and the outer case 110 and between the second sealing portion 140b and the outer case 110. The annular seal portions 151a and 151b are provided in these annular gaps, respectively.

  In addition, annular notches 122a and 122b are also provided on the outer periphery of both ends of the inner case 120, respectively. These notches 122a and 122b form an annular gap between the first sealing portion 140a and the inner case 120 and between the second sealing portion 140b and the inner case 120. In these annular gaps, annular seal portions 152a and 152b are respectively provided.

  The seal portions 151a, 151b, 152a, and 152b according to the present embodiment employ a liquid seal that becomes a liquid when applied and becomes an elastic body when cured. However, the seal portion in the present invention is not limited to a liquid seal, and a seal ring such as an O-ring or a square ring made of a rubber-like elastic body may be employed.

  Further, in the hollow fiber membrane module 100 according to the present embodiment, annular grooves 113a and 113b are provided on the inner peripheral surface of the outer case 110 on one end side and the other end side, respectively. Also, annular grooves 123a and 123b are provided on the outer peripheral surface of the inner case 120 on one end side and the other end side, respectively. The first sealing portion 140a is formed with annular protrusions 141a and 142a that fit into the annular grooves 113a and 123a, respectively, and the second sealing portion 140b is formed with an annular protrusion that fits into the annular grooves 113b and 123b. 141b and 142b are respectively formed.

  Furthermore, a first through hole 111 communicating with the outside of the outer case 110 through the annular gap S is provided on the side wall of the outer case 110. The inner case 120 is provided with a plurality of second through holes 121 that communicate with the annular gap S from the hollow portion (inside the cylinder).

In the hollow fiber membrane module 100 configured as described above, two channels of a first channel and a second channel are formed. More specifically, the first channel is a channel that passes through the hollow interior of the plurality of hollow fiber membranes 130 (see arrow A in FIG. 2). Further, the second flow path passes through the hollow portion of the inner case 120 (see arrow B1 in FIG. 2), passes through the second through hole 121 (see arrow B2 in FIG. 2) from this hollow portion, and the annular gap S The flow path passes through the outside of the plurality of hollow fiber membranes 130 and passes from the first through hole 111 to the outside of the outer case 110 (see arrow B3 in FIG. 2). The dry gas, which is the object of humidification, flows through one of the first flow path and the second flow path, and the wet gas flows through the other flow path, whereby the dry gas can be humidified by the membrane separation action of the hollow fiber membrane 130. It becomes possible. Since the wet gas is dried, it can be used for a dehumidifier.

<Method for producing hollow fiber membrane module>
With reference to FIGS. 3-9, the manufacturing method of the hollow fiber membrane module 100 which concerns on a present Example is demonstrated in order of a manufacturing process.

<< Jig installation process >>
3 to 5 show a process of attaching the jig 200 to the outer case 110 and the inner case 120 and a process of filling a plurality of hollow fiber membranes 130. The jig 200 is used for injecting a sealing material such as an epoxy resin. The jig 200 plays a role of closing the opening of the annular gap S so that the sealing material does not leak. The jig 200 includes cylindrical portions 210 and 220 on the outer side and the inner side, respectively. An injection port 210 a for sealing material is provided on the side wall surface of the outer cylindrical portion 210. In addition, an annular protrusion 210 b that fits into the notches 112 a and 112 b provided in the outer case 110 is provided at the tip of the outer cylindrical portion 210. An annular protrusion 220 a that fits into the notches 122 a and 122 b provided in the inner case 120 is provided at the tip of the inner cylindrical portion 220.

  The jig 200 configured as described above is attached to the other end side of the outer case 110 and the inner case 120 as shown in FIG. That is, the other end of the outer case 110 is fitted to the annular protrusion 210b, and the other end of the inner case 120 is fitted to the annular protrusion 220a. That is, the notch 112b and the annular protrusion 210b of the outer case 110 are fitted, and the notch 122b and the annular protrusion 220a of the inner case 120 are fitted. Thereafter, as shown in FIG. 4, a plurality of hollow fiber membranes 130 are filled into the annular gap S from one end side of the outer case 110 and the inner case 120. Then, as shown in FIG. 5, the jig 200 is also attached to one end side of the outer case 110 and the inner case 120. That is, the notch 112a and the annular protrusion 210b of the outer case 110 are fitted, and the notch 122a and the annular protrusion 220a of the inner case 120 are fitted. The intermediate product obtained by the above manufacturing process is referred to as a first intermediate product 100X for convenience of explanation.

  In the above example, after attaching the jig 200 to the other end side of the outer case 110 and the inner case 120, a plurality of hollow fiber membranes 130 are filled, and then, on one end side of the outer case 110 and the inner case 120. The case where the jig 200 is attached has been described. However, after attaching the jig 200 to one end side of the outer case 110 and the inner case 120, the plurality of hollow fiber membranes 130 are filled, and then the jig 200 is attached to the other end side of the outer case 110 and the inner case 120. You may do it.

<< Creation process of sealing part >>
6 and 7 show the process of creating the sealing portion. First, as shown in FIG. 6, the first intermediate product 100 </ b> X is attached to the centrifuge 300. Then, the centrifuge 300 injects a sealing material from the injection port 210a provided in the jig 200 in a state where centrifugal force is applied to the first intermediate product 100X (see arrow Q). The sealing material is injected by a predetermined amount, and centrifugal force is continuously applied until the sealing material is cured. The sealing material injection process described above is performed on each of the one end side and the other end side of the first intermediate product 100X. Any order may be used first.

  The intermediate product thus obtained is removed from the centrifuge 300, and the jigs 200 at both ends are also removed. Then, as shown in FIG. 7, the cutting tool 400 cuts a part of the cured sealing material on both end sides together with the hollow fiber membrane 130. In addition, the dotted line in FIG. 7 has shown the site | part to cut | disconnect. Thus, the 1st sealing part 140a and the 2nd sealing part 140b are created. The intermediate product obtained by the above manufacturing process is referred to as a second intermediate product 100Y for convenience of explanation.

<< Peeling process of adhesive part between sealing part and case >>
FIG. 8 shows a process of peeling off the adhesive portion between the sealing portion and the case. As illustrated, the second intermediate product 100 </ b> Y is placed in the thermostatic chamber 500. Then, the second intermediate product 100Y is heat-treated at a predetermined temperature. In addition, the heating temperature is the bonding portion between the first sealing portion 140a and the outer case 110, the bonding portion between the first sealing portion 140a and the inner case 120, the second sealing portion 140b and the outer case. 110 and the adhesive part between the second sealing part 140b and the inner case 120 are set to temperatures at which the adhesive part is peeled off. The intermediate product obtained by the above manufacturing process is referred to as a third intermediate product 100Z for convenience of explanation.

<< Step of providing a seal part >>
FIG. 9 shows a process of providing a seal portion. In the third intermediate product 100Z, between the first sealing portion 140a and the outer case 110, between the first sealing portion 140a and the inner case 120, between the second sealing portion 140b and the outer case 110, In addition, annular gaps are formed between the second sealing portion 140b and the inner case 120, respectively. When the sealing material is injected, the annular protrusions 210b and 220a of the jig 200 are fitted into the notches 112a and 112b of the outer case 110 and the notches 122a and 122b of the inner case, respectively. The gap is formed by removing the jig 200 after the sealing material is cured. Then, by injecting a liquid seal into these annular gaps (see arrow Q), rubber-like elastic seal parts 151a, 151b, 152a, 152b are provided in these gaps. As described above, instead of a liquid seal, a seal ring such as an O-ring or a square ring made of a rubber-like elastic body may be attached to the annular gap. As described above, the hollow fiber membrane module 100 according to the present embodiment can be manufactured.

<The excellent point of the hollow fiber membrane module which concerns on a present Example, and its manufacturing method>
As described above, according to the hollow fiber membrane module 100 according to the present embodiment, the seal between each sealing portion and each case is not based on adhesion of each sealing portion to each case, but an elastic seal. Each part is sealed. Thereby, sealing performance can be improved. Moreover, the adhesion part between each sealing part and each case exists in the peeled state. Therefore, it is not necessary to adopt materials having the same linear expansion coefficient as the material of each sealing portion and the material of each case. Thereby, the range of selection of each case material can be widened. In the present embodiment, as described above, the outer case 110 and the inner case 120 are made of a highly rigid material. Accordingly, there is no need to mount the hollow fiber membrane module 100 in a highly rigid housing, and the number of parts can be reduced. In addition, there is no need to attach a seal ring such as an O-ring between the case and the housing as in the case of using a highly rigid housing. Therefore, high dimensional accuracy is not required for the outer case 110 and the inner case 120. Along with this, post-processing is not required to increase the concentricity.

Further, in the hollow fiber membrane module 100 according to the present embodiment, annular grooves 113a, 113b, 123a, 123b are provided on the inner peripheral surface of the outer case 110 and the outer peripheral surface of the inner case 120 on one end side and the other end side, respectively. It has been. The first sealing portion 140a and the second sealing portion 140b are formed with annular protrusions 141a, 141b, 142a, 142b that fit into the annular grooves 113a, 113b, 123a, 123b, respectively. Thereby, even if the adhesion part between each sealing part and each case is peeled, it can suppress that each sealing part moves with respect to each case.

  In the manufacturing method according to this embodiment, when the jig 200 is removed by providing the jig 200 with the annular protrusions 210b and 220a, a seal portion is provided between each sealing portion and each case. For this reason, a method is used in which an annular gap is formed. Thereby, it is not necessary to form an annular gap for providing the seal portion by cutting or the like, and an increase in the number of manufacturing steps can be suppressed.

(Other)
In the present embodiment, the case where the outer case 110 is constituted by a cylindrical member has been shown, but the outer case in the present invention is not limited to a cylindrical member as long as it is a cylindrical member. In the present embodiment, the case where the inner case 120 is formed of a bottomed cylindrical member has been shown. However, the inner case in the present invention can be applied to various members having hollow portions.

  In this embodiment, the hollow fiber membrane module 100 includes an outer case 110 and an inner case 120, and a plurality of hollow fiber membranes 130 are filled in the annular gap S between the outer case 110 and the inner case 120. Showed the case. However, in this invention, it is applicable not only to such a hollow fiber membrane module but to various hollow fiber membrane modules. For example, the present invention can also be applied to a hollow fiber membrane module in which a plurality of hollow fiber membranes are filled in a U-shape in one bottomed cylindrical case, and a sealing portion is provided at an opening on one end side. The present invention can also be applied to a hollow fiber membrane module in which a single cylindrical case is filled with a plurality of hollow fiber membranes, and sealing portions are respectively provided at openings on both ends.

  That is, also in these hollow fiber membrane modules, after creating the sealing portion, the adhesive portion between the sealing portion and the case is peeled off by heat treatment, and an elastic body is formed in the gap between the sealing portion and the case. It is good to provide the seal part. The gap between the sealing part and the case may be formed by devising the structure of the jig and removing the jig, as shown in the above embodiment, or by cutting. May be formed.

100 hollow fiber membrane module 100X first intermediate product 100Y second intermediate product 100Z third intermediate product 110 outer case 111 first through hole 112a, 112b notch 113a, 113b annular groove 120 inner case 121 second through hole 122a, 122b Notch parts 123a, 123b Annular groove 130 Hollow fiber membrane 140a First sealing part 140b Second sealing part 141a, 141b, 142a, 142b Protrusion 151a, 151b, 152a, 152b Seal part 200 Jig 210, 220 Cylindrical part 210a Inlet 210b, 220a Annular projection 300 Centrifuge 400 Cutting tool 500 Constant temperature bath S Annular gap

Claims (7)

Case and
A plurality of hollow fiber membranes filled in the case;
In a state where the hollow interior of each hollow fiber membrane is opened, a sealing portion that seals gaps between the plurality of hollow fiber membranes;
In a hollow fiber membrane module comprising:
The sealing portion is formed by being cured after a sealing material is injected in a state where a plurality of hollow fiber membranes are filled in the case, and
A hollow fiber characterized in that an elastic seal part is provided in a gap between the sealing part and the case in a state where an adhesive part between the sealing part and the case is peeled off. Membrane module. A cylindrical outer case,
An inner case disposed inside the outer case and having a hollow portion;
A plurality of hollow fiber membranes filled in an annular gap between the outer case and the inner case;
A first sealing portion that seals gaps between the plurality of hollow fiber membranes in a state where the hollow interior of each hollow fiber membrane is opened on one end side of the outer case and the inner case;
A second sealing portion that seals gaps between the plurality of hollow fiber membranes in a state where the hollow interior of each hollow fiber membrane is opened on the other end side of the outer case and the inner case;
A hollow fiber membrane module comprising:
The side wall of the outer case is provided with a first through hole that communicates from the annular gap to the outside of the outer case, and the side wall of the inner case has a second through hole that communicates from the hollow portion to the annular gap. In the provided hollow fiber membrane module,
The first sealing portion and the second sealing portion are formed by being cured after the sealing material is injected in a state where a plurality of hollow fiber membranes are filled in the annular gap,
In a state where the adhesive portion between the first sealing portion and the outer case and the adhesive portion between the first sealing portion and the inner case are peeled off, the first sealing portion and the outer case A seal part made of an elastic body is provided in the gap between and the gap between the first sealing part and the inner case,
In addition, the second sealing portion and the outer case in a state where the adhesive portion between the second sealing portion and the outer case and the adhesive portion between the second sealing portion and the inner case are peeled off, respectively. The hollow fiber membrane module is characterized in that an elastic seal part is provided in each of a gap between the second sealing part and the inner case.   The outer circumferential surface of the outer case and the outer circumferential surface of the inner case are provided with annular grooves on one end side and the other end side, respectively, and the first sealing portion and the second sealing portion are fitted in these annular grooves. The hollow fiber membrane module according to claim 2, wherein annular projections are formed respectively. It is a manufacturing method of the hollow fiber membrane module according to claim 1,
Filling the case with a plurality of hollow fiber membranes and injecting a sealing material in a state where the opening of the case is closed by a jig; and
Removing the jig after the sealing material is cured, and cutting the part of the cured part of the sealing material to create the sealing portion; and
A step of peeling the adhesive portion between the sealing portion and the case by heat treatment;
Providing an elastic seal part in the gap between the sealing part and the case;
The manufacturing method of the hollow fiber membrane module characterized by including. It is a manufacturing method of the hollow fiber membrane module according to claim 2 or 3,
Injecting a sealing material in a state where a plurality of hollow fiber membranes are filled in the annular gap and the opening of the annular gap is closed by a jig;
Removing the jig after the sealing material is cured, and cutting a part of the cured part of the sealing material to create the first sealing portion and the second sealing portion;
By heat treatment, an adhesive portion between the first sealing portion and the outer case, an adhesive portion between the first sealing portion and the inner case, an adhesive portion between the second sealing portion and the outer case And the step of peeling off the adhesive portions between the second sealing portion and the inner case,
A gap between the first sealing portion and the outer case, a gap between the first sealing portion and the inner case, a gap between the second sealing portion and the outer case, and a second sealing Providing a seal portion made of an elastic body in a gap between the portion and the inner case,
The manufacturing method of the hollow fiber membrane module characterized by including. An annular notch is provided on the inner periphery of both ends of the outer case, and an annular notch is provided on the outer periphery of both ends of the inner case.
When the jig is removed after the sealing material is cured, the jig is provided with annular projections that are respectively fitted to the notches, so that the gap between the first sealing part and the outer case is removed. The seal portion is provided between the first sealing portion and the inner case, between the second sealing portion and the outer case, and between the second sealing portion and the inner case. The manufacturing method of the hollow fiber membrane module according to claim 5, wherein the gaps are respectively formed.   The method for producing a hollow fiber membrane module according to claim 4, 5 or 6, wherein the seal portion is a liquid seal that becomes liquid when applied and becomes an elastic body when cured.

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