JP2013022579A - Membrane module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To firmly and stably fix a lid body and a cylinder body using an adhesive agent so that a hollow fiber membrane module will not get dirty by the adhesive agent.SOLUTION: A hollow fiber membrane module 1 includes a cylinder body 10 where a hollow fiber membrane is stored, and a lid body 11 which is fit in the outer periphery of the opening of the cylinder body 10 to close the opening. At a lid body side fitting part 30 fit with the cylinder body 10 at the lid body 11, an injection hole 70 for an adhesive agent C is formed. A projected adhesive agent guide 80 to guide the adhesive agent C injected from the injection hole 70 from the outer end part side to the inner side of the fitting face is formed at least either on a fitting face 61 or 31 in a cylinder body side fitting part 60 which is fit with the lid body 11 in the cylinder body 10, or in the lid body side fitting part 30. The adhesive agent guide 80 is formed along the circumference direction of the fitting faces 61 and 31, and it is formed in a spiral shape so that it gradually moves inside.

Description

  The present invention relates to a membrane module.

  For example, membrane modules are used in the fields of blood purification such as hemodialysis therapy and plasma exchange therapy, blood treatment performed by removing viruses from blood products, and water purification treatment.

  The membrane module includes, for example, a tubular body in which a bundle of hollow fiber membranes is accommodated, or one end of which is open, and a lid that is fitted on the outer periphery of the opening of the tubular body and closes the opening. Yes. For example, a primary port is formed on the lid, and a secondary port is formed near the end of the cylindrical body.

  By the way, in the manufacture and assembly of the membrane module, one or both ends of the hollow fiber membrane in the cylindrical body are fixed with a potting agent, the hollow fiber membrane is cut into a predetermined length, and then the opening of the cylindrical body A lid is fitted on the outer periphery of the tube to close the opening of the cylindrical body. At this time, the cylindrical body and the lid body may be fixed with an adhesive to prevent the lid body from rotating around the cylindrical body.

JP 2000-262869 A JP-A-10-202070

  The inventors have considered fixing the tubular body and the lid firmly in order to prevent the lid of the membrane module from being removed during transport or use or the sealing performance of the membrane module from being lowered. At this time, it is conceivable to apply a larger amount of adhesive to the fitting surface between the cylindrical body and the lid body and then fit the lid body into the cylindrical body. However, in this case, since the lid is fitted into the outer periphery of the cylindrical body from the outside, the adhesive is rubbed and moved in the gap between the lid and the cylindrical body, and the amount of the adhesive is within the surface of the fitting surface. Spots appear. When spots are formed, the adhesive strength between the cylindrical body and the lid is lowered and becomes unstable. If the adhesive is increased so that spots are not formed, the adhesive is pushed out by the lid when fitted, and the membrane module becomes dirty.

  This invention is made | formed in view of this point, and makes it the objective to fix a cover body and a cylindrical body firmly and stably with an adhesive agent so that a membrane module may not become dirty with an adhesive agent.

  In order to achieve the above object, the present invention includes a cylindrical body in which one or both ends are opened, and a lid that is fitted to the outer periphery of the opening of the cylindrical body and closes the opening. An adhesive injection hole is formed in a lid-side fitting portion that is a membrane module and is fitted to the cylindrical body in the lid, and is fitted to the lid in the cylindrical body. The adhesive injected from the injection hole is guided inward from the outer end side of the fitting surface to at least one of the fitting surface of the cylindrical body side fitting portion or the lid body side fitting portion. This is a membrane module in which a protruding or recessed adhesive guide is formed.

  According to the present invention, the adhesive injection hole is formed in the lid-side fitting portion, and the adhesive guide is formed on the fitting surface. Therefore, after the lid is fitted into the opening of the cylindrical body, the lid An adhesive can be injected from the injection hole of the body-side fitting portion, and the adhesive can be guided toward the inside of the fitting surface. Thereby, an adhesive agent can be spread evenly and reliably to the fitting surface of a lid body and a cylindrical body, and a lid body and a cylindrical body can be firmly and stably fixed with an adhesive agent. Further, since the adhesive is not pushed out by the lid, contamination of the membrane module can be prevented.

  The adhesive guide may be formed along the circumferential direction of the fitting surface, and may be formed in a spiral shape so as to gradually shift inward.

  The adhesive guide may be formed in a continuous linear shape.

  The adhesive guide may have a plurality of circumferences along the fitting surface.

  The injection hole may be formed at a position where a plurality of protrusions or recesses of the adhesive guide overlap when viewed inward from the outer end side of the fitting surface.

  A plurality of the adhesive guides may be formed along the fitting surface.

  The said injection hole may be formed in the outer end part of the said cover body side fitting part.

  The injection hole may be formed at a position corresponding to an outer end portion of the adhesive guide.

  A port of a membrane module is formed in the cylindrical body, and the injection hole may be formed at an angle rotated by 30 to 330 degrees with respect to the port.

  As the adhesive, an adhesive that has been defoamed before injection may be used.

  The adhesive may have a viscosity of 500 to 3000 mPa · s.

  According to another aspect of the present invention, there is provided a method for manufacturing a membrane module, the step of closing the opening by fitting a lid to the outer periphery of an opening of a cylindrical body in which one or both ends of the membrane is accommodated. And injecting an adhesive into the injection hole formed in the lid side fitting portion of the lid, and flowing the adhesive inward from the outer end side of the fitting portion of the lid and the cylindrical body. A process for filling the membrane module.

  In the step of filling the adhesive, the adhesive may be guided inwardly from the outer end side of the fitting portion by a protruding or concave adhesive guide.

  This invention by another viewpoint is a membrane module manufactured by the manufacturing method of the membrane module in any one of the said.

  According to the present invention, the lid and the cylindrical body can be firmly and stably fixed with the adhesive so that the membrane module is not soiled with the adhesive, so that the transportability and reliability of the membrane module can be improved. .

It is sectional drawing which shows the outline of a structure of a hollow fiber membrane module. It is an external view of the cover body of the hollow fiber membrane module which shows the position of an injection hole. It is a longitudinal cross-sectional view of a cover body. It is an external view of the edge part of a cylindrical body. It is an expanded sectional view of the fitting part of the cover body and cylindrical body which shows the structure of an adhesive guide. It is an external view of the edge part of a cylindrical body at the time of providing two protrusions. It is an external view of the edge part of the cylindrical body with a protrusion with a discontinuous part. It is explanatory drawing which shows the case where the protrusions of a cover body side protrusion and the protrusions of a cylindrical body side, and the concave stripe parts oppose each other. It is explanatory drawing which shows the case where an adhesive guide is provided only in the fitting surface of either a cover body side or a cylindrical body side. It is an expanded sectional view of the fitting part of the cover body and cylindrical body which shows the other structure of an adhesive agent guide.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Drawing 1 is an explanatory view of the longitudinal section showing the outline of the composition of hollow fiber membrane module 1 as a membrane module concerning this embodiment. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  The hollow fiber membrane module 1 includes, for example, as shown in FIG. 1, a tubular body 10 in which a large number of hollow fiber membranes A are accommodated in the longitudinal direction (axial direction), and fitted into both ends of the tubular body 10. And a lid 11 for closing the opening of the part.

  The lid 11 has a substantially cylindrical shape with one end face closed, and a first port 20 that communicates the internal space of the module 1 with the outside is provided at the center of the closed face. The cylindrical side wall of the lid 11 is a lid-side fitting portion 30 that is fitted into the outer circumferential surface of the cylindrical body 10, and the inner circumferential surface of the lid-side fitting portion 30 is the fitting surface 31. Yes. The inner surface of the side wall of the lid body 11 is formed with, for example, a small-diameter surface 40 on the first port 20 side and a large-diameter surface 41 with a large inner diameter on the cylindrical body 10 side to form a stepped portion. Is the fitting surface 31.

  The cylindrical body 10 is formed in a substantially cylindrical shape, and the diameter of both end portions is larger than the diameter on the central portion side. A second port 50 is provided on each of the wall surfaces of both ends of the cylindrical body 10. The wall surface outside the second port 50 of the cylindrical body 10 is a cylindrical body-side fitting portion 60 that is fitted to the lid body 11, and the outer peripheral surface of the cylindrical body-side fitting portion 60 is the fitting surface 61. It has become.

  As shown in FIG. 2, an adhesive injection hole 70 that penetrates the side wall of the lid 11 is formed in the lid-side fitting portion 30 of the lid 11. The injection hole 70 is formed at the outer end portion of the lid-side fitting portion 30. The injection hole 70 is formed at a position rotated by 30 to 330 degrees in the circumferential direction of the module with respect to the second port 50, more preferably at an angle rotated by 60 to 120 degrees, or 240 to 300 degrees.

  As shown in FIGS. 3, 4, and 5, the adhesive injected from the injection hole 70 is applied to the fitting surface 31 of the lid 11 and the fitting surface 61 of the cylindrical body 10. An adhesive guide 80 is formed to guide from the outer end side to the inside (center side of the module). For example, as shown in FIG. 3, a spiral protrusion 81 that extends along the circumferential direction of the fitting surface 31 and gradually shifts toward the center of the module is formed on the fitting surface 31 of the lid 11. . As shown in FIG. 4, a spiral protrusion 82 extending along the circumferential direction of the fitting surface 61 and gradually shifting to the center side of the module is formed on the fitting surface 61 of the cylindrical body 10. . As shown in FIG. 5, the protrusions 81 and the protrusions 82 are alternately positioned and meshed with each other. The ridge body 81 and the ridge body 82 are formed in a continuous linear shape so as not to be interrupted in the middle, and a plurality of circumferences are formed along the fitting surfaces 31 and 61. The ridge body 81 may be formed longer than the ridge body 82.

  As shown in FIG. 3, the injection hole 70 is formed at a position corresponding to the outer end (starting point) 81 a of the protrusion 81, for example, near the outer end 81 a on the extension line of the protrusion 81. The injection hole 70 is formed at a position where a plurality of protrusions 81 overlap when viewed from the outer end side of the fitting surface 31 toward the inside.

  As shown in FIG. 1, both ends of the hollow fiber membrane A in the cylindrical body 10 are sealed with a potting agent B. The potting agent B is hardened in a cylindrical shape, and is filled between the hollow fiber membranes A and between the hollow fiber membrane A and the inner peripheral surface of the tubular body 10, and seals both ends of the hollow fiber membrane A. It has stopped. Note that both ends of the hollow fiber membrane A are open to the outer end face of the potting agent B.

  Next, the manufacturing method of the hollow fiber membrane module 1 comprised as mentioned above is demonstrated. First, the hollow fiber membrane A is accommodated in the cylindrical body 10, and the lid 11 is fixed to both ends of the cylindrical body 10 in a state where both ends of the hollow fiber membrane A are fixed to the cylindrical body 10 by the potting agent B. The opening of both ends of the cylindrical body 10 is closed. At this time, for example, the lid body 11 is fitted into the cylindrical body 10 while being rotated, and the protrusion 81 of the fitting surface 31 of the lid body 11 and the concave stripe body 82 of the fitting surface 61 of the cylindrical body 10 are screwed. It functions as a mechanism and engages with each other. When the lid body 11 is fitted into the tubular body 10 to the end, the injection hole 70 of the lid body 11 is arranged at a position rotated by, for example, about 90 degrees with respect to the second port 50.

  Next, as shown in FIG. 5, the adhesive C is injected from the injection hole 70 of the lid 11. At this time, as the adhesive C, one previously defoamed is used, for example, one having a viscosity of 500 to 3000 mPa · s, preferably 1000 to 2000 mPa · s. In addition, injection | pouring of the adhesive agent C may be performed manually, for example using a syringe etc., and may be performed using apparatuses, such as a dispenser.

  The injected adhesive C is guided between the fitting surfaces 31 and 61 by the projecting body 81 and the projecting body 82, flows along the projecting body 81 and the projecting body 82, and the fitting surface 31, It flows from the outer end side of 61 toward the center of the module. In particular, since the pressure is released on the module center side of the fitting surfaces 31 and 61, the adhesive C easily flows. Thus, the adhesive C is filled between the fitting surface 31 and the fitting surface 61. Thereafter, when the adhesive C is dried, the lid body 11 and the cylindrical body 10 are fixed to each other.

  According to the above embodiment, since the injection hole 70 for the adhesive C is formed in the lid-side fitting portion 30 and the adhesive guide 80 is formed on the fitting surfaces 31 and 61, the lid 11 is formed into a cylindrical body. 10, the adhesive C is injected from the injection hole 70 of the lid-side fitting portion 30, and the adhesive C is guided toward the inside of the fitting surfaces 31 and 61 (module center side). can do. Thereby, an adhesive agent can be spread evenly and reliably to the fitting surfaces 31 and 61 of the lid body 11 and the cylindrical body 10, and the lid body 11 and the cylindrical body 10 can be firmly and stably adhered with the adhesive C. Can be fixed. Further, since the adhesive C is not pushed out by the lid 11, contamination of the hollow fiber membrane joule 1 by the adhesive C can be prevented.

  The protrusions 81 and 82 of the adhesive guide 80 are formed along the circumferential direction of the fitting surfaces 31 and 61 and are formed in a spiral shape so as to gradually shift toward the center of the module. Thus, the adhesive C can be properly guided and diffused.

  Since the protrusions 81 and 82 of the adhesive guide 80 are continuously formed without interruption, the adhesive C can be more stably guided to the entire fitting surfaces 31 and 61.

  In addition, since the protrusions 81 and 82 of the adhesive guide 80 have a plurality of circumferences along the fitting surfaces 31 and 61, the protrusions 81 and 82 serve as a weir, and the adhesive C is the protrusion. It is possible to prevent the body 81, 82 from getting over and flowing out from the inner end of the fitting surface 31.

  The injection hole 70 is formed at a position where a plurality of protrusions 81 of the adhesive guide 80 are overlapped when viewed from the outer end side of the fitting surface toward the inside. Also by this, the function as the weir of the protrusions 81 and 82 is enhanced, and the adhesive C can be prevented from flowing out from the inner end of the fitting surface 31.

  Since the injection hole 70 is formed at the outer ends of the fitting surfaces 31 and 61, the adhesive C is applied from the outer ends of the fitting surfaces 31 and 61 toward the inside where the pressure is released. The adhesive C can be easily spread over the entire fitting surfaces 31 and 61.

  Since the injection hole 70 is formed at a position corresponding to the outer end 81 a of the protrusion 81 of the adhesive guide 80, the adhesive C injected from the injection hole 70 is preferably guided by the protrusion 81. be able to.

  Since the injection hole 70 is formed at an angle rotated by 30 to 330 degrees with respect to the second port 50, the adhesive C is injected into the injection hole by, for example, a syringe or a dispenser without causing the second port 50 to get in the way. 70 can be injected.

  Since the adhesive C defoamed before injection is used, it is possible to prevent bubbles from being mixed into the fitting surfaces 31 and 61. Thereby, the adhesive strength of the fitting surfaces 31 and 61 by the adhesive C is improved, and the appearance is also improved.

  As the adhesive C, one having a viscosity of 500 to 3000 mPa · s is used. When the viscosity is 3000 mPa · s or less, the adhesive C is supplied to a small gap. Moreover, it can prevent leaking from the clearance gap between the fitting surfaces 31 and 61 because a viscosity is 500 mPa * s or more. The viscosity is a value measured using a B-type viscometer, a No. 4 rotor as the rotor, and the rotor rotation speed at 30 rpm.

  In the above embodiment, one protrusion 81, 82 of the adhesive guide 80 is formed, but a plurality of protrusions 81, 82 may be formed. FIG. 6 shows an example in which two continuous protrusions 82 are formed.

  Moreover, although the protrusions 81 and 82 were a continuous continuous thing, they may be an intermittent thing with a discontinuous part in the middle. FIG. 7 shows an example in which the protruding body 82 has an interrupted portion 82a.

  Further, in the above-described embodiment, the protrusions 81 and 82 of the adhesive guide 80 include the protrusions of the protrusion 81, the recesses of the protrusion 82, and the protrusions and protrusions of the protrusion 81. The ridges of the ridge 82 are meshed with each other, but this is not a limitation. For example, as shown in FIG. 8, the ridge 90 of the ridge 81 and the ridge 91 of the ridge 82, The concave stripe portion 92 of the elongated protrusion 81 and the concave stripe portion 93 of the elongated protrusion 82 may be opposed to each other. Further, as shown in FIG. 9, the protrusions of the adhesive guide 80 are provided only on one of the fitting surface 31 and the fitting surface 61 (the fitting surface 61 in the figure), and the other is flat. Also good.

  Further, for example, as shown in FIG. 10, when the protrusions of the protrusion 81 and the protrusions of the protrusion 82, the protrusions of the protrusion 81 and the protrusions of the protrusion 82 mesh with each other. In addition, the width of the recess may be formed sufficiently larger than the width of the protrusion. In this case, for example, it is preferable that the ratio of the width of the bottom surface of the concave portion and the width of the vertex of the protruding portion is 1.5 to 5 times. More preferably, it is 2 to 4 times. By doing so, the adhesive C can flow more easily, and the adhesive C can be distributed more evenly and reliably to the fitting surfaces 31 and 61 of the lid body 11 and the cylindrical body 10.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the idea described in the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  For example, in the above embodiment, the adhesive guide 80 is formed in the fitting portion between the lid body 11 and the cylindrical body 10 on both sides in the longitudinal direction of the hollow fiber membrane module 1, but only on one side in the longitudinal direction. An adhesive guide 80 may be formed. Moreover, although the adhesive guide 80 was implement | achieved in the form of the protrusions 81 and 82, it may be implement | achieved in the form of a concave strip. Moreover, although the said embodiment was an example which applied this invention to the hollow fiber membrane module 1, membranes other than a hollow fiber membrane, for example, a membrane of a flat membrane type, a spiral type, a pleat type, a tubular type The present invention can also be applied to a membrane module containing the above.

  The present invention is useful when the lid and the cylindrical body of the membrane module are firmly and stably fixed with the adhesive so that the membrane module is not soiled with the adhesive.

DESCRIPTION OF SYMBOLS 1 Hollow fiber membrane module 10 Tubular body 11 Lid body 20 1st port 30 Lid body side fitting part 31 Fitting surface 50 2nd port 60 Cylindrical body side fitting part 61 Fitting surface 70 Injection hole 80 Adhesive guide 81 Projection body 82 Projection body A Hollow fiber membrane B Potting agent C Adhesive

Claims (14)

A membrane module having a cylindrical body in which one or both ends of the membrane is opened, and a lid that is fitted to the outer periphery of the opening of the cylindrical body and closes the opening,
An adhesive injection hole is formed in the lid-side fitting portion fitted to the cylindrical body in the lid,
The cylindrical body-side fitting portion that is fitted to the lid body in the tubular body, or the fitting surface that is at least one of the lid-side fitting portion is filled with the adhesive injected from the injection hole. A membrane module in which a ridge-shaped or concave-shaped adhesive guide that is guided inwardly from the outer end side of the fitting surface is formed.   2. The membrane module according to claim 1, wherein the adhesive guide is formed along a circumferential direction of the fitting surface and is formed in a spiral shape so as to gradually shift inward.   The membrane module according to claim 2, wherein the adhesive guide is formed in a continuous linear shape.   The membrane module according to claim 2 or 3, wherein the adhesive guide has a plurality of circumferences along the fitting surface.   The injection hole is formed at a position where a plurality of protrusions or recesses of the adhesive guide overlap when viewed inward from the outer end side of the fitting surface. 5. The membrane module according to any one of 4 above.   The membrane module according to claim 2, wherein a plurality of the adhesive guides are formed along the fitting surface.   The said injection hole is a membrane module in any one of Claims 1-6 currently formed in the outer end part of the said cover body side fitting part.   The membrane module according to claim 1, wherein the injection hole is formed at a position corresponding to an outer end portion of the adhesive guide. The membrane according to any one of claims 1 to 8, wherein a port of a membrane module is formed in the cylindrical body, and the injection hole is formed at an angle rotated by 30 to 330 degrees with respect to the port. module.   The membrane module according to claim 1, wherein the adhesive is defoamed in advance before injection.   The membrane module according to claim 1, wherein the adhesive has a viscosity of 500 to 3000 mPa · s. A method for manufacturing a membrane module, comprising:
A step of closing the opening by fitting a lid to the outer periphery of the opening of the cylindrical body in which one or both ends of the membrane is accommodated;
An adhesive is injected into the injection hole formed in the lid side fitting portion of the lid body, and the adhesive is filled by flowing inward from the outer end side of the fitting portion of the lid and the cylindrical body. A process for producing a membrane module.   13. The membrane module manufacturing according to claim 12, wherein in the step of filling the adhesive, the adhesive is guided inwardly from the outer end side of the fitting portion by a protruding or concave adhesive guide. Method.   The membrane module manufactured by the manufacturing method of the membrane module in any one of Claim 12 or 13.

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