JP5871127B2 - Jig for storing cylindrical casing - Google Patents

Description

  The present invention generally relates to a jig for housing a cylindrical casing, and in particular, used in a centrifugal device used when filling an adhesive in the manufacture of a hollow fiber membrane module used in a water purifier. It relates to a jig to be used.

  In recent years, water purifiers for purifying tap water have been generally used in homes and the like. In such a water purifier, for example, a hollow fiber membrane module 18 (FIG. 1) in which one end 14 a of the cylindrical body 14 of the hollow fiber membrane 12 is fixed with an adhesive 16 in the cylindrical casing 10 is used as a filter medium. I often do it.

When manufacturing such a hollow fiber membrane module 18, first, the hollow fiber membrane 12 is turned into a sheet-like shape with a fixed length a number of times, and then a yarn 20 such as a polyester filament yarn is provided near both ends. And knitted with a long knitted fabric 22 (FIG. 2).
Next, the long knitted fabric 22 is cut into a predetermined length and wound in a direction perpendicular to the length direction of the hollow fiber membrane 12 around a center tube 24 for resin injection as shown in FIG. Let it be a cylindrical body 14 (FIG. 4).

  And this cylindrical body 14 is accommodated in the bottom part of the cylindrical casing 10 by which the end was closed by the baseplate 10a. Further, the discharge pipe 26 of the resin pot (liquid resin reservoir container) 28 in which the discharge pipe 26 is integrally formed at the lower part is inserted into the center tube 24 wound around the center of the cylindrical hollow fiber membrane (columnar body) 22. Further, a fixing liquid resin R is put into the resin pot 28 (FIG. 5) to obtain an intermediate M of the hollow fiber membrane module. The intermediate M is attached to the centrifugal device, and the resin is filled in the resin potting 28 through the center tube 24 to the bottom of the cylindrical casing 10, and the adhesive (resin) layer 16 is formed on the bottom of the cylindrical casing 10.

  The cylindrical casing 10 has a small diameter portion 10b adjacent to the bottom portion, and the small diameter portion 10b is connected to the upper portion by a step portion 10c.

  The columnar body 14 is fixed to the inner peripheral surface of the cylindrical casing 10 by the adhesive (resin) layer 16, and the hollow fiber membranes 12 in the columnar body 14 are bonded and integrated with each other.

  As the centrifuge used in the resin filling as described above, for example, as shown in FIGS. 6 and 7, the pivot shaft 30 arranged in the vertical direction and the pivot shaft 30 while holding the intermediate body M are used as the center. There exists an apparatus provided with the part which turns (patent document 1).

  This centrifuge is a device that is housed in the centrifuge housing and forms the main part of the centrifuge, and includes six arms 32 that are fixed to the pivot shaft 30 and that extend radially from the pivot shaft 30 in the horizontal direction. A rotating member 34, and six buckets 36 that are suspended so as to straddle the tips of two adjacent arms 32, and that can swing radially outwardly about a connecting portion with the arm 32. I have.

  Each bucket 36 is horizontally arranged, a holding plate 40 in which four openings 38 capable of accommodating the cylindrical casing 10 of the intermediate body M are formed, and a pair of hanging members 42 for hanging the holding plate 40. The cylindrical casing 10 can be fixed and held so that the length direction thereof is the vertical direction by fitting the bottom of the cylindrical casing 10 of the intermediate body M to each opening 38. Yes.

  As shown in FIG. 5, the casing 10 having the hollow fiber membrane columnar body 14 and the resin pot 28 containing the resin R disposed therein is fitted into the opening 38 of the holding plate 40 to rotate. The member 34 is rotated around the turning shaft 30.

  By this rotation, the bucket 36 suspended from the tips of the six arms 32 of the rotating member 34 swings radially outward about the connecting portion with the arm 32 according to the centrifugal force accompanying the turning. . As a result, the cylindrical casing 10 of the intermediate body M fitted into the opening of the holding plate 40 of the bucket 36 is inclined outward (FIG. 8).

  By such an inclination, the resin liquid R in the resin pot 28 is filled into the bottom of the cylindrical casing 10 through the center tube 24 from the discharge pipe 26 of the resin pot 28 by centrifugal force, and the bottom of the cylindrical casing 10 is filled. Thus, an adhesive (resin) layer 16 is formed.

Japanese Patent No. 4095800

  Here, the outer diameter of the cylindrical casing used for the hollow fiber membrane module (intermediate body) of the water purifier varies depending on the size of the water purifier to be attached. Therefore, the filling process which is a part of the manufacturing process of the hollow fiber membrane module needs to correspond to the cylindrical casing having different outer diameters.

  However, in the centrifugal device disclosed in Patent Document 1, the cylindrical casing 10 is fitted into the opening 38 of the holding plate 40 of each bucket 36 so that the length direction of the cylindrical casing 10 becomes the vertical direction. Since the filling process is performed while being fixed to and held on, the filling operation of the adhesive cannot be performed on cylindrical casings having different outer diameters.

  In addition, a method of preparing a plurality of holding plates with openings having different diameters and replacing the holding plate according to the outer diameter of the target cylindrical casing is also conceivable, but the holding plate is a metal part. Therefore, it is expensive, and there is a problem that the work of changing the holding plate according to the outer diameter of the target cylindrical casing reduces the production efficiency.

  The present invention has been made to cope with such a problem, and is intended for housing a cylindrical casing that can make the production of a hollow fiber membrane module having a cylindrical casing having different outer diameters inexpensive and simple. An object is to provide a jig.

According to the present invention,
A cylindrical casing having a hollow fiber membrane bundle made up of a plurality of hollow fiber membranes and having a bottom plate formed at one end is accommodated, and the cylindrical plate is rotated by the centrifugal force accompanying the turning about the turning axis. A centrifugal device that is oriented so as to face radially outward and fills an adhesive resin in the vicinity of a bottom plate of the cylindrical casing, wherein the cylindrical casing is accommodated in an opening, and the cylindrical casing is vertically moved A cylindrical casing storage jig used in a centrifuge equipped with a storage plate that can move from a supported initial position to a centrifugal position where the bottom plate of the cylindrical casing is oriented radially outward by the centrifugal force. Tools,
It has a substantially cylindrical shape with at least one end opened,
The outer periphery of the jig has an outer support portion having an outer diameter substantially equal to the inner diameter of the opening portion of the storage plate, and an outer side disposed on the one end side of the outer support portion and having a larger outer diameter than the outer support portion. A large-diameter portion, and an outer step portion connecting the outer support portion and the outer large-diameter portion,
The inner periphery of the jig has an inner large diameter portion arranged on the one end side, an inner medium diameter portion having an inner diameter smaller than the inner large diameter portion arranged on the other end side of the inner large diameter portion, and An inner step portion for connecting the inner large diameter portion and the inner medium diameter portion,
The jig characterized by this is provided.

  According to such a configuration, since the portion having a different inner diameter is provided inside the jig, if the hollow fiber membrane module includes a casing having an outer diameter corresponding to any of these inner diameters, this jig It can attach to a centrifuge device via and can perform an adhesive filling operation.

According to another preferred embodiment of the invention,
An inner small diameter portion that is disposed on the other end side of the inner medium diameter portion and has an inner diameter smaller than the inner medium diameter portion, and a second inner step portion that connects the inner medium diameter portion and the inner small diameter portion. In preparation.

According to another preferred embodiment of the invention,
It is integrally formed with a synthetic resin.

  ADVANTAGE OF THE INVENTION According to this invention, the jig | tool for cylindrical casing accommodation which can manufacture the hollow fiber membrane module which has a cylindrical casing of a different outer diameter cheaply and easily can be provided.

It is sectional drawing of the hollow fiber membrane module manufactured using the jig | tool of the preferable aspect of this invention. It is a top view of the elongate knitted fabric of the hollow fiber membrane used for the hollow fiber membrane module of FIG. It is a perspective view of the center tube used at the time of manufacture of the hollow fiber membrane module of FIG. It is a perspective view of the cylindrical body of the hollow fiber membrane used with the hollow fiber membrane module of FIG. It is sectional drawing of the intermediate body of a hollow fiber membrane module for demonstrating the manufacturing process of the hollow fiber membrane module of FIG. It is a perspective view of the centrifuge which uses the jig of a desirable mode of the present invention. It is a top view of the centrifuge which uses the jig of a desirable mode of the present invention. It is a side view explaining operation | movement of the centrifuge which uses the jig | tool of the preferable aspect of this invention. It is a perspective view of the jig | tool of the preferable aspect of this invention. It is a longitudinal cross-sectional view of the jig | tool of the preferable aspect of this invention. It is a perspective view of the state where the jig of the desirable mode of the present invention was attached to the support plate. It is a longitudinal cross-sectional view of the state which attached the intermediate body of the hollow fiber membrane module to the jig | tool of the preferable aspect of this invention. It is a longitudinal cross-sectional view of the state which attached the other intermediate body of the hollow fiber membrane module to the jig | tool of the preferable aspect of this invention. It is a longitudinal cross-sectional view of the state which attached the other intermediate body of the hollow fiber membrane module to the jig | tool of the preferable aspect of this invention.

  Hereinafter, a jig 50 according to a preferred embodiment of the present invention will be described with reference to the drawings. This jig can be used in, for example, the centrifuge described in Patent Document 1, but can also be used in other types of centrifuges.

  As shown in FIGS. 9 and 10, the jig 50 is a cup-shaped member that has a substantially cylindrical shape with one end being an open end 52 and is integrally formed of synthetic resin.

  On the outer periphery of the jig 50, a cylindrical outer support portion 54 is provided in the center in the longitudinal direction (axial direction) of the jig 50 and has an outer diameter substantially equal to the inner diameter of the opening 38 of the holding plate 40 of the centrifuge. Is provided. Further, on the outer periphery of the jig 50, a cylindrical outer large-diameter portion 56 that is disposed on the opening end 52 side of the outer support portion 54 and has an outer diameter larger than that of the outer support portion 54 is provided.

  An outer stepped portion 58 is formed between the outer support portion 54 and the outer large diameter portion 56. The outer step portion 58 has an annular portion extending in the radial direction of the jig 50, and connects the upper end of the outer support portion 54 and the lower end of the outer large diameter portion 56.

  Further, on the outer periphery of the jig 50, a cylindrical outer small-diameter portion 60 that is disposed on the other end side of the outer support portion 54 and has an outer diameter smaller than that of the outer support portion 54 is provided.

  A second outer step portion 62 is formed between the outer support portion 54 and the outer small diameter portion 60. Similar to the outer step portion 58, the second outer step portion 62 has an annular portion extending downward in the radial direction of the jig 50, and connects the lower end of the outer support portion 54 and the upper end of the outer small diameter portion 60. ing.

  With such a configuration, when the jig 50 is accommodated in the opening 38 of the holding plate 40 of the centrifuge, the annular portion extending in the radial direction of the jig 50 is similar to the upper surface of the storage plate 40 in the same manner as the outer stepped portion 58. The jig 50 comes into contact with the opening 38 (FIG. 11).

  On the other hand, on the inner periphery of the jig 50, an inner large-diameter portion 64 disposed on one end (open end) side and having a cylindrical inner peripheral wall, and an inner large-diameter portion disposed on the other end side of the inner large-diameter portion 64. An inner inner diameter portion 66 having a cylindrical inner peripheral wall having an inner diameter smaller than 64 is provided. An inner stepped portion 68 is formed between the inner large diameter portion 64 and the inner middle diameter portion 66.

  The inner step portion 68 has an annular portion that extends in the radial direction of the jig 50, and connects the lower end of the inner large-diameter portion 64 and the upper end of the inner medium-diameter portion 66.

  Further, an inner small diameter portion 70 having a cylindrical inner peripheral wall having an inner diameter smaller than that of the inner medium diameter portion 66 is provided on the other end side of the inner medium diameter portion 66. A second inner stepped portion 72 is provided between the inner middle diameter portion 64 and the inner small diameter portion 70.

  Similarly to the inner step portion 68, the second inner step portion 72 has an upwardly extending annular portion extending in the radial direction of the jig 50, and connects the lower end of the inner medium diameter portion 66 and the upper end of the inner small diameter portion 70. doing.

  In the present embodiment, the inner diameter of the inner small diameter portion 70 is set substantially equal to the outer diameter of the small diameter portion 10 b adjacent to the bottom portion 10 a of the cylindrical casing 10, and the inner diameter of the inner medium diameter portion 66 is the main body of the cylindrical casing 10. The dimension is set to be approximately equal to the outer diameter of the part.

  With such a configuration, when the intermediate body M of the hollow fiber membrane module shown in FIG. 5 is inserted into the jig 50 from the open end 52 of the jig 50 so that the bottom portion is down, the intermediate body The small-diameter portion 10b of the cylindrical casing 10 constituting M contacts the inner peripheral surface of the inner small-diameter portion 70 of the jig 50, and further, a step portion 10c between the small-diameter portion 10b of the cylindrical casing 10 and the main body portion. The intermediate body M is held in the jig 50 by engaging with the second inner stepped portion 72 of the jig 50 (FIG. 12).

  Moreover, the intermediate body M ′ having a casing having an outer diameter smaller than the inner small diameter portion 70 of the jig 50 can be held in the inner small diameter portion 70 (FIG. 13).

  Further, the intermediate M ″ having a casing having an outer diameter larger than the inner large diameter portion 64 of the jig 50 can be held in the inner large diameter portion 64 (FIG. 14).

  Thus, if the jig | tool of this embodiment is used, the intermediate body M etc. which have the cylindrical casing of a different outer diameter can be set to a centrifuge.

  After setting the intermediate M or the like in the centrifugal device, the centrifugal device is operated to apply a centrifugal force to the intermediate M or the like as shown in FIG. Will be filled.

  The centrifuge shown in FIGS. 6 to 8 is generally housed in a casing 80 that can control the internal temperature and the like, and is centrifuged.

  The centrifuge 82 includes a heater and a fan disposed inside the housing 80, and is controlled so that the inside of the housing has a uniform desired temperature.

  Various hollow fiber membranes used in the hollow fiber membrane module 18, intermediates M, M ′, M ″ and the like can be used. For example, cellulose-based, polyolefin-based, polyvinyl alcohol-based, PMMA (polymethyl methacrylate) ) Type, polysulfone type, etc., hollow fiber membranes made of various materials can be used, and hollow fiber membranes made of a material with high elongation such as polyethylene are particularly preferred.

  In addition, the hole diameter, porosity, film thickness, outer diameter, and the like of the hollow fiber membrane are not particularly limited as long as the hollow fiber membrane can be used as a filtration membrane. It is preferable that the diameter is 2000 μm, the pore diameter is 0.01 to 1 μm, the porosity is 20 to 90%, and the thickness is about 5 to 300 μm.

  The casing 10 may be made of any material having mechanical strength and durability. For example, polycarbonate, polysulfone, polyolefin, PVC (polyvinyl chloride), acrylic resin, ABS resin, modified PPE (polyphenylene ether), etc. Is used.

  As the fixing resin, an epoxy resin, an unsaturated polyester resin, a polyurethane resin, a silicone-based filler, various hot melt resins, and the like can be used, and can be appropriately selected. Also, the viscosity of the fixing resin before solidification is not particularly limited, but is preferably 500 to 5000 mPa · s, more preferably 2000 to 3000 mPa · s.

  When the viscosity of the fixing resin is less than 500 mPa · s, the fixing resin may flow to the opening end portion of the hollow fiber membrane and cause the opening end portion to be blocked. When the viscosity of the fixing resin exceeds 5000 mPa · s, it is difficult to impregnate between the hollow fiber membranes.

  Due to the operation of the centrifugal device, the bucket 36 swings radially outward, and the intermediate body M accommodated in the bucket is oriented so that the bottom surface side of the casing 10 faces outward and the open end side faces inward, and receives a centrifugal force. . Due to this centrifugal force, the liquid resin in the liquid resin reservoir 28 reaches the bottom of the casing 10 through the center tube 24 as indicated by an arrow C.

  During the centrifugation process, the heater and the fan are operated in the casing, and the casing is controlled to have a uniform desired temperature.

  After a predetermined time has elapsed, the centrifuge is stopped, the casing 10 is removed from the centrifuge, the liquid resin that has reached the bottom of the casing 10 is cured, and the casing 10 is sealed at the bottom and the internal space of the casing 10 is sealed in the axial direction. A resin (adhesive) layer 16 is formed.

  With this resin layer 16, the cylindrical body 14 is fixed to the inner peripheral surface of the casing 10, and the hollow fiber membranes 12 are joined together in the cylindrical body 14.

  Finally, in the vicinity of the bottom plate 10 a of the casing 10, the cylindrical body 11 integrated by the casing 10 and the resin layer 16 is cut in the radial direction of the casing 10, and the open end of the hollow fiber membrane 12 constituting the cylindrical body 14 is formed. Exposing to the outside, the production of the hollow fiber membrane module 18 (FIG. 1) is completed.

  In the jig of this embodiment, the height position of the cylindrical casing with respect to the jig 50 differs depending on the outer diameter of the cylindrical casing of the hollow fiber membrane module.

  Therefore, when the same jig is used, the distance between the rotating shaft of the centrifuge and the cylindrical casing in the centrifugation process varies depending on the difference in the height position of the cylindrical casing with respect to the jig 50, and the outside of the cylindrical casing. The magnitude of the centrifugal force acting on the hollow fiber membrane module varies depending on the diameter. That is, when the same jig is used, a large centrifugal force can be applied to the cylindrical casing having a small outer diameter.

  On the other hand, the magnitude of the centrifugal force acting on the hollow fiber membrane module can be changed by changing the height positions of the outer stepped portion, the inner stepped portion, the second inner stepped portion and the like.

  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.

38: Opening portion 40: Holding plate 50: Jig 52: Open end 54: Outer support portion 56: Outer large diameter portion 58: Outer step portion 60: Outer small diameter portion 62: Second outer step portion 64: Inner large diameter portion 66: Inner medium diameter portion 68: Inner step portion 70: Inner small diameter portion 72: Second inner step portion

Claims (3)

A cylindrical casing having a hollow fiber membrane bundle made up of a plurality of hollow fiber membranes and having a bottom plate formed at one end is accommodated. The centrifugal device is oriented so as to be directed radially outward, and is filled with an adhesive resin in the vicinity of a bottom plate of the cylindrical casing, wherein the cylindrical casing is accommodated in an opening, and the cylindrical casing is For storing a cylindrical casing used in a centrifuge equipped with a storage plate that can be moved from the initial position supported to a centrifugal position where the bottom plate of the cylindrical casing is oriented radially outward by the centrifugal force. A jig,
It has a substantially cylindrical shape with at least one end opened,
The outer periphery of the jig has an outer support portion having an outer diameter substantially equal to the inner diameter of the opening portion of the storage plate, and an outer side disposed on the one end side of the outer support portion and having a larger outer diameter than the outer support portion. A large-diameter portion, and an outer step portion connecting the outer support portion and the outer large-diameter portion,
The inner periphery of the jig has an inner large diameter portion arranged on the one end side, an inner medium diameter portion having an inner diameter smaller than the inner large diameter portion arranged on the other end side of the inner large diameter portion, and An inner step portion for connecting the inner large diameter portion and the inner medium diameter portion,
A jig characterized by that. An inner small diameter portion that is disposed on the other end side of the inner medium diameter portion and has an inner diameter smaller than the inner medium diameter portion, and a second inner step portion that connects the inner medium diameter portion and the inner small diameter portion. In preparation for the
The jig according to claim 1. It is integrally formed with synthetic resin,
The jig according to claim 1 or 2.

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