JP2606450Y2 - Hollow fiber membrane module - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow fiber membrane module used for, for example, a household water purifier or an industrial or medical filtration device.

[0002]

2. Description of the Related Art A conventional hollow fiber membrane module of this type is, for example, as shown in FIG. In this hollow fiber membrane module 100, a bundle of many hollow fiber membranes 102 is inserted into a case 101 having both ends opened, and both ends of each hollow fiber membrane 102 are connected to both cases 101. At the open end of each of the hollow fibers, a potting agent injection port 104 for injecting and filling into the case 101 a potting agent 103 which is a sealing material provided on a side surface of the case 101 near each of the open ends. Membrane 10
2 and the gaps between the hollow fiber membranes 102 and the case 101 are filled and filled to form a potting portion 1 as a sealing and fixing portion.
05, and the potting portion 105 forms the case 1
01 separates the filtration chamber 106 inside from the external space B.

[0003] Since the hollow fiber membrane module 100 is of a cross flow type, the potting agent injection port 104 is shared with a secondary opening.
It is provided on the side of the case 101 near the filtration chamber 106.

[0004]

However, in the case of the above-mentioned prior art, when the potting agent 103 is injected, the surface of each hollow fiber membrane 102 is connected and flows to the open end of the case 101 so that the potting portion 105 is formed. The hollow fiber membrane 102 is applied to the surface of the hollow fiber membrane 102 except for the effective area of the membrane and the durability of the hollow fiber membrane. There are problems such as breakage of each hollow fiber membrane 102 due to shaking of the 102.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a hollow fiber membrane module capable of improving the durability of a hollow fiber membrane. .

[0006]

In order to achieve the above object, according to the present invention, a bundle of a large number of hollow fiber membranes is inserted into a case, and each hollow fiber membrane is opened at both open ends of the case. A sealing material is injected and filled into the gap between the fiber membranes and the gap between each hollow fiber membrane and the case to form a sealing fixed portion, and the filtration chamber provided at the central portion inside the case at the sealing fixed portion. and separates the external space, in the hollow fiber membrane module having an opening portion further communicating with the filtration chamber of the case side surface, the opening is provided
Between the inner surface of the case and the hollow fiber membrane bundle
And the filtration chamber side is fixed to the inner surface of the case.
Shielding means is provided, between the inner surface of the case and the shielding means.
At the same time, bypasses the outer periphery of the hollow fiber membrane bundle and
Providing a passage for the injected sealant,
Penetrate the shielding means on the filtration chamber side of the opening
And a through-hole communicating from the opening to the filtration chamber is provided .

[0007]

In the hollow fiber membrane module having the above-mentioned structure, between the inner circumference of the case and the hollow fiber membrane bundle, an opening communicating with the filtration chamber inside the case bypassing the outer circumference of the hollow fiber membrane bundle. Since the passage for the sealing material to be injected is provided to the sealing fixing portion, when the sealing material is injected and filled in the sealing fixing portion,
The sealing material is not applied to the surface of the hollow fiber membrane other than the sealing and fixing part. Therefore, the effective membrane area of the hollow fiber membrane does not decrease, and the durability does not decrease.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiment. In FIGS. 1 and 2 showing a hollow fiber membrane module according to an embodiment of the present invention, reference numeral 1 denotes a hollow fiber membrane module, and the hollow fiber membrane module 1 performs cross flow, and has two ends. Open cylindrical case 2
A plurality of bundles of hollow fiber membranes 3 are inserted into a ring 6 (shielding means) of a cylindrical body having a smaller cross-sectional area than the cross-sectional area of the case 2 housed therein, and both ends of each hollow fiber membrane 3 At both open ends of the case 2, a potting agent inlet for injecting and filling the case 2 with a potting agent 4 as a sealing material provided on a side surface of the case 2 near each of the open ends. 5, a gap between each hollow fiber membrane 3 and a gap between each hollow fiber membrane 3 and the case 2 are injected and filled to form a potting portion 8 as a sealing and fixing portion.
The inner filtration chamber 9 is isolated from the outer space B.

Since the hollow fiber membrane module 1 is of a cross flow type, the potting agent inlet 5 is a secondary opening.

The ring 6 has a rib 61 fitted and fixed to the inner periphery of the case 2 on the filtration chamber 9 side of the outer periphery of the cylindrical portion 62, and the rib 61 communicates with the filtration chamber 9. A through-hole 63 penetrating in the axial direction is formed. The ring 6 is arranged inside the case 2 such that the rib 61 is located on the side of the filtration chamber 9 in the axial direction from the potting agent injection port 5 which is a secondary opening. By arranging in this manner, the inner circumference of the case 2 and the rib 61
A passage 7 communicating from the potting agent inlet 5 to the potting part 8 is formed from the outer periphery of the cylindrical part 62. That is, the passage 7 detours between the inner periphery of the case 2 and the hollow fiber membrane bundle 3A and the outer periphery of the hollow fiber membrane bundle 3A.

By arranging the ring 6 configured as described above inside the case 2 as described above, the potting agent 4 injected from the potting agent injection port 5 allows the potting agent 4 to enter the cylindrical portion 62 of the ring 6 in the passage 7. The outer circumference of the hollow fiber membrane bundle 3A is uniformly spread in the circumferential direction, bypasses the outer periphery of the hollow fiber membrane bundle 3A via the cylindrical portion 62, and flows to the open end of the case 2; It is injected and filled from inside.

[0012]

In the hollow fiber membrane module having the above structure, the ring 6 is disposed inside the case 2 to
Since the passage 7 leading from the potting agent inlet 5 to the potting portion 8 is formed around the outer periphery of the hollow fiber membrane bundle 3A, the ring 6 is used when the potting agent 4 is injected through the passage 7.
Since the injection and filling are performed uniformly by the cylindrical portion 62, the potting portion 8 has no unevenness in the length of the potting.

Further, when the potting agent 4 is injected, only the potting portion 8, which is the portion to be injected and filled, does not come into contact with the surface of the hollow fiber membrane 3 directly.
The durability was improved.

Further, when suction is performed from the potting agent injection port 5 to reduce the pressure, the force is dispersed by the cylindrical portion 62 of the ring 6 and does not concentrate on a part, and in the same axial direction as the arrangement of the hollow fiber membranes 3. Since the force acts, each hollow fiber membrane 3 is not damaged. Therefore, the occurrence of yarn breakage in the hollow fiber membrane 3 was eliminated.

On the other hand, in the conventional hollow fiber membrane module 100 shown in FIG. 4 described in the above prior art, when a potting agent 103 is injected from a potting agent injection port 104 which is a secondary opening, the hollow fiber membrane 102 , A thin layer of potting agent 103 was observed. Then, when vacuum suction was performed from the potting agent injection port 104, the bundle of the hollow fiber membranes 102 was shaken, and the hollow fiber membranes 102 were cut.

FIG. 3 shows another embodiment of the present invention. In the above embodiment, the ring 6 is disposed inside the case 2 to form the passage 7. However, in this embodiment, both ends in the axial direction are opened inside the potting agent inlet 5 which is a secondary opening. The passage 7 is formed by a flat plate 6A (shielding means) attached to the inside of the case 2 via the rib 61. By providing the flat plate 6A in this way, when suction was performed under reduced pressure from the potting agent injection port 5, the flat plate 6A
As a result, the force was dispersed, and the shaking of the hollow fiber membrane 3A was significantly reduced as compared with the case where the flat plate 6A was not attached, and the hollow fiber membrane 3 did not break.

Also, during potting, since the potting agent 4 is directly injected into the potting portion 8 through the flat plate 6A of the passage 7, good results can be obtained without touching the surface of the hollow fiber membrane 3. .

Since other configurations and operations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and description thereof will be omitted.

[0020]

The present invention has the above-described structure and operation, and communicates between the inner periphery of the case and the hollow fiber membrane bundle to the filtration chamber inside the case bypassing the outer periphery of the hollow fiber membrane bundle. For the injected sealing material, which leads from the opening to the sealing fixture
When the sealing material is injected and filled in the sealing and fixing portion, the sealing material is not applied to the surface of the hollow fiber membrane other than the sealing and fixing portion. Therefore, the effective membrane area of the hollow fiber membrane did not decrease, and the hollow fiber membrane did not break, and the durability was improved.

[Brief description of the drawings]

FIG. 1A is a schematic view of a hollow fiber membrane module according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A.

FIG. 2 is an enlarged view of a potting portion of FIG.

FIG. 3 is an enlarged view of a potting portion of a hollow fiber membrane module according to another embodiment of the present invention.

FIG. 4 (a) is a schematic view of a conventional hollow fiber membrane module, and FIG. 4 (b) is an enlarged view of the potting portion of FIG. 4 (a).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hollow fiber membrane module 2 Case 3 Hollow fiber membrane 3A Hollow fiber membrane bundle 4 Potting agent (sealing material) 5 Potting agent injection port (secondary side opening) 6 Ring 6A Flat plate 61 Rib 62 Cylindrical part 63 Through-hole 7 Passageway 8 Potting part (sealing fixing part) 9 Filtration chamber

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B01D 63/02 B01D 63/00 500

Claims (1)

(57) [Scope of request for utility model registration] 1. A bundle of a large number of hollow fiber membranes is inserted into a case, and a sealing material is inserted into a gap between each hollow fiber membrane and a gap between each hollow fiber membrane and the case at open ends on both sides of the case. To form a sealing and fixing part, and the sealing and fixing part
In a hollow fiber membrane module in which a filtration chamber provided in a central portion is separated from an external space and an opening communicating with the filtration chamber is provided on a side surface of the case, the inner surface of the case provided with the opening is hollow. Thread membrane bundle
And the filtration chamber side is inside the case.
A shielding means fixed to the surface, wherein the hollow fiber membrane is provided between the inner surface of the case and the shielding means.
Injected, bypassing the perimeter of the bundle and leading to the sealing fixture
Providing a passage for the sealing material,
Also through the shielding means on the filtration chamber side
A hollow fiber membrane module provided with a through-hole communicating with the filtration chamber .