JP3834537B2 - Reinforcing material for hollow fiber membrane bundle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reinforcing material for a hollow fiber membrane bundle and a hollow fiber membrane module.
[0002]
[Prior art and problems to be solved by the invention]
There is a type of hollow fiber membrane module in which a required number of hollow fiber membrane bundles are accommodated in a case housing having a liquid inlet / outlet, and liquid (raw water, permeated water, etc.) enters and exits into the case housing only by the liquid inlet / outlet, Such types are often applied to relatively large modules.
[0003]
However, when manufacturing such a type of hollow fiber membrane module, a large number of hollow fiber membrane bundles composed of a plurality of hollow fiber membranes are accommodated in the case housing. Will be required.
[0004]
In addition, when performing filtration using the above-described hollow fiber membrane module, raw water and the like enter and exit from the liquid inlet / outlet, so only the hollow fiber membrane bundle at the position facing the liquid inlet / outlet is a pressure accompanying the entry and exit of raw water and the like Will continue to receive. In particular, when the liquid inlet / outlet is above the side surface of the case housing, only the upper part of the hollow fiber membrane bundle is subjected to pressure, and the plurality of hollow fiber membrane bundles are shaken and repeatedly collide with each other.
[0005]
When such a situation occurs, there is a problem that the hollow fiber membranes constituting the hollow fiber membrane bundle are likely to be broken, and the replacement frequency of the hollow fiber membrane at a specific part in the hollow fiber membrane bundle is increased. There are problems such as interruption of filtration operation due to replacement work and increase in operating cost.
[0006]
This invention makes it a subject to provide the reinforcing material for hollow fiber membrane bundles which can simplify the accommodation fixation operation | work of a hollow fiber membrane bundle, and a hollow fiber membrane module using the same.
[0007]
[Means for Solving the Problems]
The invention of claim 1 comprises a combination of an annular outer frame and a partition plate that divides the outer frame into eight or more fan-shaped holes as means for solving the problem, and for supporting the hollow fiber membrane bundle in the fan-shaped holes. A reinforcing material for a hollow fiber membrane bundle is provided.
[0008]
By using such a reinforcing material for a hollow fiber membrane bundle, it becomes easy to support and fix the hollow fiber membrane bundle. Therefore, when the hollow fiber membrane module is manufactured by housing and fixing the hollow fiber membrane bundle in the case housing, In addition to facilitating the work, the hollow fiber membrane bundles are swayed and collided repeatedly by the flow accompanying the liquid entry / exit from the liquid inlet / outlet, and are prevented from being damaged.
[0009]
As another means for solving the problems, the invention of claim 2 is a combination of an annular outer frame and a partition plate that divides the outer frame into eight or more fan-shaped holes, and supports the hollow fiber membrane bundle in the fan-shaped holes. A hollow fiber membrane bundle for supporting a hollow fiber membrane bundle having a buffer plate attached to the liquid inlet / outlet to relieve the liquid pressure caused by the liquid entering / exiting when attached to the hollow fiber membrane module A reinforcing material for a bundle of hollow fiber membranes is provided.
[0010]
By using such a reinforcing member for a hollow fiber membrane bundle, the same action as that of the invention of claim 1 is achieved, and the liquid pressure due to the liquid entering / exiting from the liquid inlet / outlet is relieved. Thus, the hollow fiber membrane bundles are prevented from shaking and repeatedly colliding and being damaged.
[0011]
Claims 3 to 6 are inventions according to preferred embodiments of the inventions of Claims 1 and 2 for solving the problems of the present invention.
[0012]
In another aspect of the present invention, a plurality of hollow fiber membrane bundles in which one or both ends of a plurality of hollow fiber membranes are integrated with an adhesive in a vertically long case housing having a liquid inlet / outlet. A hollow fiber membrane module in which a plurality of hollow fiber membrane bundles are accommodated in the fan-shaped holes of the reinforcing member for hollow fiber membrane bundles according to any one of claims 1 and 4 to 6, and are removed by an adhesive. The present invention provides a hollow fiber membrane module which is fixed to a frame and a partition plate, and in which a reinforcing material for a bundle of hollow fiber membranes is fixed to a case housing.
[0013]
By using such a reinforcing material for a hollow fiber membrane bundle, it becomes easy to support and fix the hollow fiber membrane bundle. Therefore, when the hollow fiber membrane module is manufactured by housing and fixing the hollow fiber membrane bundle in the case housing, In addition to being easy to work, the hollow fiber membrane bundles are shaken by the flow associated with entering / exiting liquid from the liquid inlet / outlet and are prevented from being repeatedly damaged and broken.
[0014]
In another aspect of the present invention, a plurality of hollow fiber membrane bundles in which one or both ends of a plurality of hollow fiber membranes are integrated with an adhesive in a vertically long case housing having a liquid inlet / outlet. A hollow fiber membrane module in which a plurality of hollow fiber membrane bundles are accommodated in the fan-shaped holes of the reinforcing member for hollow fiber membrane bundles according to any one of claims 2 to 6, and the outer frame is formed by an adhesive. Further, the present invention provides a hollow fiber membrane module which is fixed to the partition plate and in which the reinforcing material for the hollow fiber membrane bundle is disposed in the case housing so that the buffer plate faces the liquid inlet / outlet.
[0015]
By using such a reinforcing member for hollow fiber membrane bundles, the same action as that of the invention of claim 7 is achieved, and the liquid pressure due to the liquid entering / exiting from the liquid inlet / outlet is relieved. Thus, the hollow fiber membrane bundles are prevented from shaking and repeatedly colliding and being damaged.
[0016]
Claims 9 to 14 are inventions according to preferred embodiments of the inventions of Claims 7 and 8 for solving the problems of the present invention.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
(1) Embodiment of reinforcing material for hollow fiber membrane bundle Hereinafter, the reinforcing material for a hollow fiber membrane bundle of the present invention will be described with reference to the drawings. 1 is a plan view of a reinforcing material for a hollow fiber membrane bundle, FIG. 2 is a front view of FIG. 1, FIG. 3 is a plan view of a reinforcing material for a hollow fiber membrane bundle of another embodiment, and FIG. 4 is a front view of FIG. is there. In FIGS. 1 and 3, the hollow fiber membrane bundle is shown only in the fan-shaped hole h in order to explain the accommodation state of the hollow fiber membrane bundle.
[0018]
The hollow fiber membrane bundle reinforcing material 10 shown in FIGS. 1 and 2 is composed of a combination of an annular outer frame 11 and a plurality of partition plates 12 for partitioning the inside of the annular outer frame 11. The frame 11 and the base portion 13 at the center are connected. The hollow fiber membrane bundle reinforcing material 10 is preferably made of fiber reinforced resin in order to be lightweight and high in strength.
[0019]
The annular outer frame 11 has eight fan holes a to h surrounded by a part of the periphery (arc) of the annular outer frame 11 and the two partition plates 12, and the number of fan holes may be eight or more. For example, the upper limit is not particularly limited, and is appropriately set according to the size of the hollow fiber membrane module to be applied. When a hollow fiber membrane module is manufactured using the reinforcing member 10 for hollow fiber membrane bundles, the hollow fiber membrane bundle 116 is accommodated in the fan-shaped holes a to h and fixed with an adhesive 118.
[0020]
The ratio (A ₂ / A ₁ ) of the total occupied area A ₂ of the fan-shaped holes a to h to the area A ₁ in the annular outer frame 11 is preferably 65% or more, more preferably 70% or more, and still more preferably 80%. That's it. By setting the ratio to 65% or more, the filling rate (accommodation number) of hollow fiber membrane bundles per unit area can be increased, and as a result, the effective membrane area can be increased. The filtration performance can be improved. A ₂ is a value obtained by subtracting the area of the partition plate 12 from A ₁ .
[0021]
The width W ₁ of the annular outer frame 11 is preferably _{1 to} 30 mm, more preferably 5 to 20 mm, still more preferably 7 to 15 mm, and the thickness T ₁ is preferably 10 to 200 mm, more preferably 20 to 100 mm, More preferably, it is 30-60 mm.
[0022]
The width _{W 2} of the partition plate 12, preferably 1 to 30 mm, more preferably 5 to 20 mm, more preferably from 7 to 15 mm, the thickness _{T 2} are preferably 10 to 200 mm, more preferably 20 to 100 mm, further Preferably it is 30-60 mm.
[0023]
The hollow fiber membrane bundle reinforcing material 20 shown in FIG. 3 has the same structure and dimensions as the hollow fiber membrane bundle reinforcing material 10 shown in FIGS.
[0024]
It consists of a combination of an annular outer frame 21 and a plurality of partition plates 22 that partition the inside of the annular outer frame 21, and the plurality of partition plates 22 connect between the annular outer frame 21 and the base point portion 23 at the center. . The hollow fiber membrane bundle reinforcing material 20 is preferably made of a fiber reinforced resin in order to make it lightweight and high in strength.
[0025]
The inside of the annular outer frame 21 has eight fan holes a to h surrounded by a part of the periphery (arc-shaped side) of the annular outer frame 21 and two partition plates 22, and the number of fan holes is eight or more. If so, the upper limit is not particularly limited, and is set as appropriate according to the size of the case housing to be applied. When a hollow fiber membrane module is manufactured using the reinforcing member 20 for hollow fiber membrane bundles, the hollow fiber membrane bundle 116 is accommodated in the fan-shaped holes a to h and fixed with an adhesive 118.
[0026]
The ratio (A ₂ / A ₁ ) of the total occupied area A ₂ of the fan-shaped holes a to h to the area A ₁ in the annular outer frame 21 is preferably 65% or more, more preferably 70% or more, and still more preferably 80%. That's it. By setting the ratio to 65% or more, the filling rate (accommodation number) of hollow fiber membrane bundles per unit area can be increased, and as a result, the effective membrane area can be increased. The filtration performance can be improved. A ₂ is a value obtained by subtracting the area of the partition plate 22 from A ₁ .
[0027]
The width and thickness of the annular outer frame 21 and the partition plate 22 can be in the same numerical range as the width and thickness of the annular outer frame 11 and the partition plate 12 shown in FIGS.
[0028]
In the reinforcing member 20 for a hollow fiber membrane bundle, a buffer plate 30 is provided in the fan holes d and e.
[0029]
The buffer plate 30 has an arch-shaped buffer surface 31 protruding in one direction and two support plates 32 and 33, and is integrated with the annular outer frame 21 and the partition plate 22. The support plates 32 and 33 may be a frame or may be provided with holes. The buffer surface 31 is in contact with (or fixed in contact with) the single partition plate 22 at the center, and the two support plates 32 and 33 are respectively attached to the single partition plate 22 and the annular outer frame 21. It is fixed in contact.
[0030]
By integrating the buffer plate 30 with the support frame 20 in this way, the buffer plate 30 may be deformed or dropped even when it is subjected to hydraulic pressure such as counter pressure washing water using permeated water. Is prevented.
[0031]
(2) Embodiment of Hollow Fiber Membrane Module Hereinafter, the hollow fiber membrane module of the present invention will be described with reference to the drawings. FIG. 5 is a schematic partial cross-sectional view of a hollow fiber membrane module, and FIG. 7 is a schematic partial cross-sectional view of a hollow fiber membrane module according to another embodiment, in which both the cylindrical main body and the cap show a cross section. The others are not cross-sections, and hatching is added to clarify the distinction between members. FIG. 6 is a schematic cross-sectional view in the radial direction of FIG. 5 and is a view for explaining an attachment state of the hollow fiber membrane reinforcing material in FIG. In addition, in FIG. 6, in order to demonstrate the accommodation state of a hollow fiber membrane bundle, the hollow fiber membrane bundle is shown only in the fan-shaped hole e.
[0032]
In the hollow fiber membrane module 100 shown in FIG. 5, an outer shell (case housing) is formed from a cylindrical main body 112, an upper cap 114, and a lower cap 115. Instead of providing the lower cap 115, the bottom of the cylindrical main body 112 may be closed to provide the bottom. These cylindrical main body 112, upper cap 114, and lower cap 115 are preferably made of fiber reinforced resin or stainless steel.
[0033]
The upper cap 114 is provided with an upper inlet / outlet (concentrate outlet, permeate outlet, back pressure washing water supply port or raw water supply port) 114a having a flange 114b, and the lower cap 115 has a flange 115b. A lower liquid inlet / outlet (raw water supply port, concentrate outlet, permeate outlet or back pressure wash water supply port) 115a is provided.
[0034]
For example, a pipe 140 that forms a concentrate line is connected to the upper inlet / outlet 114a. At this time, it is desirable to interpose a sealant between the flange 114b of the upper inlet / outlet 114a and the flange 141 of the pipe 140.
[0035]
For example, a pipe 142 forming a raw water line is connected to the lower entrance / exit 115a. At this time, it is desirable to interpose a sealing material between the flange 115b of the upper entrance / exit 115a and the flange 143 of the pipe 142.
[0036]
A cylindrical permeated water inlet / outlet 120 (hereinafter referred to as 120 is a permeated water inlet / outlet, but is used as a raw water supply port or a concentrated liquid outlet) in a state of protruding outward from the side surface at the upper portion of the side surface of the cylindrical main body portion 112. Can also be provided). It is desirable that a protective entrance / exit 125 having the same shape is detachably attached to the permeate entrance / exit 120 by means of screwing or the like.
[0037]
By attaching such a protective inlet / outlet 125, for example, a pipe for connecting to the raw water tank can be connected via the protective inlet / outlet 125 without being directly connected to the permeated water inlet / outlet 120. It is prevented that 120 is damaged. Then, by making the protective entrance 125 detachable, when the protective entrance 125 is damaged, it can be easily replaced.
[0038]
At both ends of the cylindrical main body 112, the hollow fiber membrane bundle reinforcing material 20 is disposed on the upper cap 114 side, and the hollow fiber membrane bundle reinforcing material 10 is disposed on the lower cap 115 side. The reinforcing members 10 and 20 for the hollow fiber membrane bundle are bonded and fixed to the inner peripheral surface of the cylindrical main body 112.
[0039]
As shown in FIGS. 3 and 5, the upper ends of the hollow fiber membrane bundle 116 are inserted into the fan holes a to h of the reinforcing member 20 for the hollow fiber membrane bundle, and the hollow fibers constituting the hollow fiber membrane bundle 116 are inserted. The membranes, the hollow fiber membrane bundle 116, the annular outer frame 11, and the partition plate 12 are fixedly integrated with each other by a resin (adhesive) 118. The hollow fiber membrane bundle reinforcing material 20 is disposed so that the buffer plate 30 faces the raw water supply port 120.
[0040]
As shown in FIGS. 1 and 5, the lower end portion of the hollow fiber membrane bundle 116 is inserted into the fan holes a to h of the reinforcing material 10 for hollow fiber membrane bundle, and the hollow fibers constituting the hollow fiber membrane bundle 116 are formed. The membranes, the hollow fiber membrane bundle 116, the annular outer frame 11 and the partition plate 12 are fixedly integrated with each other with an adhesive 118.
[0041]
It should be noted that one or more hollow fiber membrane bundle reinforcing members 10 can be disposed other than both ends of the hollow fiber membrane bundle 116 as necessary.
[0042]
By using the reinforcing member 20 for the hollow fiber membrane bundle and the reinforcing member 10 for the hollow fiber membrane bundle in this manner, the hollow fiber membrane bundle 116 can be easily supported and fixed, and the hollow fiber membrane can be removed by the flow accompanying the flow of the liquid. It is prevented that the bundles 116 are repeatedly shaken and collided to be damaged.
[0043]
Further, since the hollow fiber membrane reinforcing member 20 includes the buffer plate 30, it is possible to prevent the backwash water (using permeated water) supplied from the permeated water inlet / outlet 120 from directly hitting the hollow fiber membrane bundle 116. The hydraulic pressure on the hollow fiber membrane bundle 116 is relieved. The area of the buffer plate 30 is preferably 1.2 times or more, more preferably 1.5 times or more the opening area of the stock solution supply port 120 in order to perform the above-described function.
[0044]
Since the buffer plate 30 is composed of three surfaces of the buffer surface 31 and the two support plates 32 and 33, the upper side and the lower side are opened (however, the upper side opening is small for removing air bubbles). Hole), the reverse pressure washing water supplied from the permeate inlet / outlet 120 hits the buffer surface 30 and is then supplied to the hollow fiber membrane bundle 116 mainly from the lower opening. At this time, the support plates 32 and 33 may be framed, or holes may be provided in the support plates 32 and 33 so that the stock solution can be supplied from the support plates 32 and 33 side in addition to the lower opening. .
[0045]
The inner diameter (D) of the cylindrical main body 112 at the installation position of the reinforcing member 20 for the hollow fiber membrane bundle or the reinforcing member 10 for the hollow fiber membrane bundle, and the thickness (t) of the adhesive 118 for fixing the hollow fiber membrane bundle 116 The ratio (t / D) is preferably 1/7 or less, more preferably 1/8 or less, and still more preferably 1/9 or less. Note that the thickness t of the adhesive 118 is equal to or less than the thickness of the annular outer frame 21 or 11.
[0046]
When the end portion of the hollow fiber membrane bundle 116 is fixed with the adhesive 118 without using the reinforcing members 20 and 10 for the hollow fiber membrane bundle, the thickness of the adhesive 118 is increased when trying to obtain an equivalent reinforcing effect. (The length of the portion where the hollow fiber membrane bundle 116 is covered with the adhesive 118 is increased.) As a result, the effective membrane area is greatly reduced. However, since the length of the portion covered with the resin (resin sealing portion) can be shortened by using the reinforcing members 20 and 10 for the hollow fiber membrane bundle, the decrease in the effective membrane area is small.
[0047]
Ratio of the length of the portion covered with the adhesive to the length (L ₁ ) of the hollow fiber membrane bundle 116 (the length of the portion covered with the adhesive from the end surface of the hollow fiber membrane bundle 116) (L ₂ ) L ₂ / L ₁ ) is preferably 1/10 or less, more preferably 1/11 or less, and still more preferably 1/12 or less. L ₂ is equal to or less than the thickness of the annular outer frame 21 or 11.
[0048]
By setting L ₂ / L ₁ in the above range, the resin-sealed portion L ₂ in the hollow fiber membrane bundle 116 can be shortened, so the reduction in effective membrane area is small.
[0049]
The filling area ratio (first filling area ratio) of the hollow fiber membrane bundle 116 with respect to the total area of the fan holes a to h of the reinforcing members 20 and 10 for the hollow fiber membrane bundle is preferably 50% or more, more preferably 55% or more. More preferably, the filling area ratio (second filling area) of the hollow fiber membrane bundle 116 with respect to the cross-sectional area in the width direction of the cylindrical main body 112 at the installation position of the reinforcing members 20 and 10 for hollow fiber membrane bundles is 60% or more. The ratio is preferably 50% or less, more preferably 45% or less, and still more preferably 40% or less.
[0050]
By setting the first filling area ratio within the above range, the filling ratio (accommodating number) of hollow fiber membranes per unit area can be increased, and as a result, the effective membrane area can be increased. The filtration performance of the yarn membrane module can be improved.
[0051]
By setting the second filling area ratio in the above range, it is possible to secure a gap for smooth movement of the liquid between the hollow fiber membrane bundles 116, so that a difference in liquid concentration is prevented depending on the location, and filtration is performed. Performance can be improved.
[0052]
As shown in FIG. 5, when the hollow fiber membrane bundle 116 is supported and fixed at both ends by the two hollow fiber membrane bundle reinforcing members 20 and 10 disposed at both ends of the case housing, two hollow fiber membranes are used. It is important that the attachment positions of the bundle reinforcing members 20 and 10 are not displaced. When these attachment positions are deviated, the hollow fiber membrane bundle 116 is twisted, and the hollow fiber membrane is damaged.
[0053]
For this reason, it is desirable to provide positioning means, for example, as shown in FIG. 6 so that such a situation does not occur.
[0054]
The inner wall surface of the cylindrical main body 112, specifically, the upper inner wall surface on which the hollow fiber membrane bundle reinforcing material 20 is arranged, and the lower inner wall surface on which the hollow fiber membrane bundle reinforcing material 10 is arranged, respectively. Two positioning projections 130a and 130b in the direction are provided.
[0055]
On the other hand, in the reinforcing members 20 and 10 for hollow fiber membrane bundles (in FIG. 6, the reinforcing member 10 for hollow fiber membrane bundles is shown), positioning concave portions 15a and 15b are provided at positions corresponding to the positioning convex portions 130a and 130b. Provide.
[0056]
When the hollow fiber membrane bundle 116 having both ends fixed to the hollow fiber membrane bundle reinforcing members 20 and 10 is accommodated in the cylindrical main body 112, the positioning convex portion 130a, the positioning concave portion 15a, and the positioning convex portion 130b are positioned. The recess 15b is accommodated so as to be combined with each other.
[0057]
By using such positioning means, the mounting positions of the two hollow fiber membrane bundle reinforcing members 20 and 10 can be accommodated so that the deviation angle with respect to the same part is 1 ° or less.
[0058]
The hollow fiber membrane module 200 shown in FIG. 7 has a configuration in which two reinforcing members 20 and 10 for hollow fiber membrane bundles are connected to a stainless support rod 50, and the other structure is the hollow fiber membrane shown in FIG. The same as the module 100.
[0059]
Both ends of the support bar 50 are fixed to the base point portion 23 of the reinforcing member 20 for hollow fiber membrane bundles and the base point portion 13 of the reinforcing member 10 for hollow fiber membrane bundles by fixing means such as bolts.
[0060]
By using the reinforcing member for the hollow fiber membrane bundle having such a support rod 50, the positioning means as shown in FIG. 6 becomes unnecessary, and the operation for housing and fixing the hollow fiber membrane bundle 116 becomes easy. Furthermore, there is also an effect of suppressing the deformation of the reinforcing members 20 and 10 for the hollow fiber membrane bundle due to the water pressure of the raw water supplied from the lower cap 115 and the back pressure washing water supplied from the permeated water inlet / outlet 120.
[0061]
In the hollow fiber membrane module shown in FIGS. 5 to 7, the ratio (d) between the inner diameter (D) of the cylindrical main body 112 and the outer diameter (d) of one hollow fiber membrane included in the hollow fiber membrane bundle 116. / D) is preferably 1/125 to 1/900, more preferably 1/200 to 1/700, and even more preferably 1/300 to 1/500.
[0062]
By setting the d / D ratio in the above range, the filling rate (accommodation number) of hollow fiber membranes per unit area can be increased, and as a result, the effective membrane area can be increased. The filtration performance of the membrane module can be improved.
[0063]
【Example】
Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.
[0064]
Example 1
A hollow fiber membrane module as shown in FIG. 5 was produced. As the reinforcing material for the hollow fiber membrane bundle, the reinforcing material 10 for the hollow fiber membrane bundle shown in FIGS. 1 and 2 and the reinforcing material 20 for the hollow fiber membrane bundle shown in FIGS. Details are as follows.
[0065]
(Case housing)
The cylindrical main body 112 was made of FRP having an inner diameter of 450 mm (D), an outer diameter of 463 mm, and a length of 1110 mm, and upper and lower caps 114 and 115 made of SUS were attached to both ends. 114a is a concentrate outlet, and 115a is a raw water supply port.
[0066]
(Permeate entrance / exit 120)
An entrance / exit with an opening diameter of 228 mm was provided at a position 210 mm from the end of the cylindrical main body 112, and a protective entrance / exit 125 made of vinyl chloride resin was attached via an O-ring.
[0067]
(Reinforcing material 20 for hollow fiber membrane bundle)
The width (W ₁ ) of the annular outer frame 11 is 12 mm, the thickness (T ₁ ) is 50 mm, the width (W ₂ ) of the partition plate 12 is 10 mm, and the thickness (T ₂ ) is 50 mm.
The area of the buffer surface 31 of the buffer plate 30 is 1.5 times the area of the permeated water inlet / outlet 120 (A ₁ ) in the annular outer frame 11 is 158,962.5 mm ²
The total occupied area (A ₂ ) of the sectors a to h is 120,000 mm ²
(Reinforcing material 10 for hollow fiber membrane bundle)
The width (W ₁ ) of the annular outer frame 11 is 12 mm, the thickness (T ₁ ) is 50 mm, the width (W ₂ ) of the partition plate 12 is 10 mm, and the thickness (T ₂ ) is 50 mm.
(Hollow fiber membrane)
A cellulose acetate-based hollow fiber membrane having an inner diameter of 0.8 mm (d), an outer diameter of 1.3 mm, and a length (L ₁ ) of 1110 mm is used, and the fan holes a to c and f to h of the reinforcing member 20 for a hollow fiber membrane bundle are used. Inserts 6215 each, inserts 3785 into each of the fan holes d and e, and inserts both ends of the cylindrical main body 12 with a centrifugal sealer (a horizontal centrifugal molding machine manufactured by Toho Machine Industry Co., Ltd.). The hollow fiber membranes located on the side, and the hollow fiber membranes and the inner peripheral surfaces of the annular outer frames of the reinforcing members 20 and 10 for the bundle of hollow fiber membranes were bonded and sealed with a urethane-based adhesive. The thickness (t) of the adhesive (length L ₂ at one end of the hollow fiber membrane fixed and integrated with the adhesive) was 50 mm (100 mm at both ends), and the effective membrane area was 110 m ² .
[0068]
t / D = 50/450 = 1/9
L ₂ / L ₁ = 50/1110 = 0.045
d / D = 0.8 / 450
A ₂ / A ₁ (Reinforcing material 20 for hollow fiber membrane bundle) = 120,000 / 158,962.5 = 0.75
Example 2
A hollow fiber membrane module was produced in the same manner as in Example 1 except that each of the reinforcing members 20 and 10 for the hollow fiber membrane bundle was provided with a positioning member as shown in FIG. However, although the areas of the fan-shaped holes b and f are slightly smaller, there is no substantial difference.
[0069]
By using the reinforcing members 20 and 10 for hollow fiber membrane bundles provided with such positioning members, the displacement angle of the mounting positions of the reinforcing members 20 and 10 for hollow fiber membrane bundles was completely eliminated.
[0070]
Example 3
A hollow fiber membrane module similar to that of Example 1 except that the support rod 50 as shown in FIG. The support bar 50 is made of SUS having an outer diameter of 15 mm, and the male screw portions on both end faces are passed through the through holes (inner diameter 16 mm) provided in the base points 23 and 13 of the reinforcing members 20 and 10 for the hollow fiber membrane bundle. And screwed.
[0071]
By using the reinforcing members 20 and 10 for hollow fiber membrane bundles connected by such a support rod 50, the displacement angle of the mounting positions of the reinforcing members 20 and 10 for hollow fiber membrane bundles is completely eliminated.
[0072]
【The invention's effect】
By using the reinforcing material for a hollow fiber membrane bundle of the present invention, when the hollow fiber membrane module is manufactured, the hollow fiber membrane bundle can be easily accommodated and fixed, and workability is improved.
[0073]
When the filtration operation is performed using the hollow fiber membrane module using the reinforcing material for hollow fiber membrane bundles of the present invention, the hollow fiber membrane bundles are fixed to each other at one end side or both end sides, so that raw water or the like is contained in the case housing. The hollow fiber membrane bundles are shaken by the hydraulic pressure when the liquid enters and exits, and the hollow fiber membrane bundles are prevented from colliding with each other and damaging the hollow fiber membranes. Furthermore, by attaching a buffer plate to the reinforcing material for the hollow fiber membrane bundle, the pressure associated with the flow of raw water etc. into and out of the hollow fiber membrane accommodated in the case housing is reduced, so that the hollow fiber membrane may be damaged. Is prevented. For this reason, by using the hollow fiber membrane module of the present invention, a stable filtration operation can be performed for a long time.
[Brief description of the drawings]
FIG. 1 is a plan view of a reinforcing material for a bundle of hollow fiber membranes.
FIG. 2 is a front view of FIG.
FIG. 3 is a plan view of a reinforcing member for a hollow fiber membrane bundle according to another embodiment.
4 is a front view of FIG. 3. FIG.
FIG. 5 is a schematic longitudinal sectional view of a hollow fiber membrane module.
FIG. 6 is a schematic cross-sectional view in the radial direction of a hollow fiber membrane module according to another embodiment.
FIG. 7 is a schematic longitudinal sectional view of a hollow fiber membrane module according to another embodiment.
DESCRIPTION OF SYMBOLS 10, 20 Reinforcing material for hollow fiber membrane bundles 11, 21 Annular outer frame 12, 22 Partition plate 13, 23 Base part 30 Buffer plate 100, 200 Hollow fiber membrane module 112 Cylindrical main body 114 Upper cap 115 Lower cap 116 Hollow membrane Bundle 118 Adhesive 120 Permeated water entrance / exit

Claims (15)

A reinforcing member for a hollow fiber membrane bundle comprising a combination of an annular outer frame and a partition plate that divides the inside of the outer frame into eight or more fan-shaped holes. A reinforcing material for a hollow fiber membrane bundle for supporting a hollow fiber membrane bundle provided with a buffer plate for relaxing a hydraulic pressure caused by liquid entry / exit from a liquid inlet / outlet when attached to a membrane module . Buffer plate spans one sector holes or two or more fan-shaped hole, it is provided to partition the along the fan-shaped hole in the circumferential direction, the hollow fiber of claim 1, wherein the plane shape is of arcuate bundle Reinforcing material. The reinforcing material for a hollow fiber membrane bundle according to claim 1 or 2 , wherein a ratio of the occupied area of the fan-shaped holes to the area in the annular outer frame is 65% or more. The width of the annular outer frame is 1 to 30 mm, the thickness is 10 to 200 mm, the width of the partition plate is 1 to 30 mm, and the thickness is 10 to 200 mm. Wood. The reinforcing material for a hollow fiber membrane bundle according to any one of claims 1 to 4 , comprising a fiber reinforced resin. A hollow fiber membrane module in which a plurality of hollow fiber membrane bundles in which one or both ends of a plurality of hollow fiber membranes are integrated with an adhesive are accommodated in a vertically long case housing having a liquid inlet / outlet, and the plurality of hollow fibers The membrane bundle is accommodated in the fan-shaped hole of the reinforcing member for a hollow fiber membrane bundle according to any one of claims 1 to 5 , and is fixed to the annular outer frame and the partition plate by an adhesive, and further for the hollow fiber membrane bundle. A hollow fiber membrane module in which a reinforcing material is fixed to a case housing. A hollow fiber membrane module in which a plurality of hollow fiber membrane bundles in which one or both ends of a plurality of hollow fiber membranes are integrated with an adhesive are accommodated in a vertically long case housing having a liquid inlet / outlet, and the plurality of hollow fibers The membrane bundle is accommodated in the fan-shaped hole of the reinforcing material for hollow fiber membrane bundle according to any one of claims 1 to 5 , and is fixed to the outer frame and the partition plate by an adhesive, and further the reinforcing for hollow fiber membrane bundle. A hollow fiber membrane module in which the material is arranged in the case housing so that the buffer plate faces the liquid inlet / outlet. The ratio (t / D) of the inner diameter (D ₁ ) at the installation position of the reinforcing material for the hollow fiber membrane bundle of the case housing to the thickness (t) of the adhesive that fixes the hollow fiber membrane bundle is 1/7 or less. The hollow fiber membrane module according to claim 6 or 7 . Any of claims 6-8 length of the hollow fiber membrane bundle ratio of the length of the integrated part by adhesive _{(L 2)} with respect to _{(L 1) (L 2 /} L 1) is less than 1/10 2. A hollow fiber membrane module according to claim 1. The hollow fiber membrane bundle has a filling area ratio of 50% or more with respect to the area of the fan-shaped hole of the reinforcing member for hollow fiber membrane bundle, and the hollow fiber with respect to the cross-sectional area in the width direction at the installation position of the reinforcing member for hollow fiber membrane bundle in the case housing The hollow fiber membrane module according to any one of claims 6 to 9 , wherein a filling area ratio of the membrane bundle is 50% or less. The hollow fiber membrane bundle is supported and fixed at both ends by the reinforcing members for hollow fiber membrane bundles arranged at both ends of the case housing, and the mounting positions of the two reinforcing members for hollow fiber membrane bundles are the same part. The hollow fiber membrane module according to any one of claims 6 to 10 , wherein the hollow fiber membrane module is adjusted by a positioning member provided in the case housing so that a reference deviation angle is 1 ° or less. The hollow fiber membrane module according to any one of claims 6 to 11 , wherein the hollow fiber membrane bundle reinforcing material is connected to a stainless steel support rod provided in the case housing. The ratio (d / D) between the inner diameter (D) of the main body of the case housing and the outer diameter (d) of one hollow fiber membrane included in the hollow fiber membrane bundle is 1/125 to 1/900. The hollow fiber membrane module of any one of 6-12 . A hollow fiber membrane module in which a plurality of hollow fiber membrane bundles in which one or both ends of a plurality of hollow fiber membranes are integrated with an adhesive are accommodated in a vertically long case housing having a liquid inlet / outlet,
Multiple hollow fiber membrane bundles
It consists of a combination of an annular outer frame and a partition plate that divides the inside of the outer frame into eight or more fan-shaped holes, and is accommodated in a fan-shaped hole of a reinforcing material for a hollow fiber membrane bundle for supporting the hollow fiber membrane bundle in the fan-shaped hole. , Is fixed to the annular outer frame and the partition plate by an adhesive, and further, the reinforcing material for the hollow fiber membrane bundle is fixed to the case housing,
The hollow fiber membrane bundle reinforcing material is disposed on both ends of the case housing, the hollow fiber membrane bundle is supported and fixed on both ends, and the mounting positions of the two hollow fiber membrane bundle reinforcing materials are the same part. A hollow fiber membrane module which is adjusted by a positioning member provided in the case housing so that a reference deviation angle is 1 ° or less. A hollow fiber membrane module in which a plurality of hollow fiber membrane bundles in which one or both ends of a plurality of hollow fiber membranes are integrated with an adhesive are accommodated in a vertically long case housing having a liquid inlet / outlet,
Multiple hollow fiber membrane bundles
It consists of a combination of an annular outer frame and a partition plate that divides the inside of the outer frame into eight or more fan-shaped holes, and is accommodated in a fan-shaped hole of a reinforcing material for a hollow fiber membrane bundle for supporting the hollow fiber membrane bundle in the fan-shaped hole. , Fixed to the annular outer frame and the partition plate by an adhesive, and further, the reinforcing material for the bundle of hollow fiber membranes is fixed to the case housing,
A hollow fiber membrane module, wherein the hollow fiber membrane bundle reinforcing material is connected to a stainless steel support rod provided in a case housing.

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