JP3278244B2 - Sealing fixing method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing and fixing method used for sealing and fixing a terminal portion of a hollow fiber membrane bundle of a hollow fiber membrane module for, for example, a household water purifier, industrial or medical use.

[0002]

2. Description of the Related Art Conventional sealing and fixing methods of this type include:
For example, it is performed by a sealing and fixing device using a hollow housing 101 having an opening 100 as shown in FIG.

The housing 101 includes a housing 1
A ring 103 having a blocking portion 102 for blocking the hollow interior of the housing 101 in the axial direction is fitted and fixed at a desired position in the axial direction with a predetermined gap on the inner peripheral surface of the housing 101. Potting nipple 1 as a sealing fixing material injection port for injecting and filling sealing fixing material 104 into housing 101 at a position on the outer peripheral portion of ring portion 103A.
05.

[0004] As a conventional sealing and fixing method, a method of sealing and fixing an end of a hollow fiber membrane bundle will be described. First, the ring 103 is opened from the opening 100 of the housing 101.
The bundle of a large number of hollow fiber membranes 106 to be sealed and fixed is inserted until the blocking portion 102 of the housing 10 is closed.
The first opening 100 is closed with a cup 107, and a sealing fixing material 104 is injected into the housing 101 from a potting nipple 105. The injected sealing fixing material 104 joins the ring portion 103A of the ring 103, and is injected and filled between the hollow fiber membranes 106 and between the hollow fiber membranes 106 and the housing 101 in order from the cup 107 side by a centrifugal method. It is sealed and fixed.

[0005]

However, in the case of the above-mentioned prior art, the housing 10 is formed by a centrifugal method.
1 is cooled, and the heat generated when the sealing and fixing material 104 is hardened causes unevenness. As a result, internal stress is generated in the hardened sealing and fixing material 104, and the durability of the sealing and fixing portion is reduced. Will be spoiled.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object thereof is to improve the durability of a sealing and fixing portion, thereby improving the reliability of a product. An object of the present invention is to provide a sealing and fixing method and an apparatus therefor.

[0007]

In order to achieve the above object, according to the present invention, a hollow housing having an opening is used, and a number of objects to be sealed and fixed are inserted from the inner periphery of the opening of the housing. And sealing the opening with a cup,
The interior of the housing is injected and filled through the sealing and fixing material injection port provided in the housing, and the gap between each sealing and fixing object and the gap between the sealing and fixing object and the inner periphery of the housing are sealed with the sealing and fixing material. In the sealing and fixing method for fixing and fixing, the housing is sealed and fixed in a state where a heat insulating material is provided on an outer peripheral portion of the housing located at the sealing and fixing portion.

Then, the device is provided with a hollow housing having an opening, a cup for closing the opening, and a sealing and fixing member for injecting and filling a sealing fixing material into the housing provided in the housing. And a material injection port, wherein a heat insulating material is provided at a position of the sealing and fixing portion on the outer peripheral portion of the housing.

[0009]

According to the above-mentioned sealing and fixing method and apparatus, since the heat insulating material is provided on the outer peripheral portion of the housing located at the sealing and fixing portion, the sealing and fixing material is injected and filled by the centrifugal method as in the conventional case. In this case, the outer peripheral portion of the housing is not cooled, and uneven heat generated when the sealing and fixing material is cured can be prevented. Therefore, it is possible to suppress the occurrence of internal stress in the sealing and fixing portion at the time of curing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 shows a sealing and fixing device for sealing and fixing an end of a hollow fiber membrane bundle of a hollow fiber membrane module performing a cross flow according to one embodiment of the present invention.

The sealing and fixing is performed by a sealing and fixing device A using the housing 1 shown in FIG. The housing 1 is hollow inside with an opening 2 and has a ring 3
And a sealing and fixing material injection port 5 for injecting and filling an adhesive 4 as a sealing and fixing material into the housing 1.

The ring 3 is a cylindrical member having a blocking portion 3A for blocking the hollow inside the housing 1 in the axial direction.
The blocking portion 3A has a plurality of holes 6 penetrating in the axial direction with a predetermined gap in the radial direction. And this ring 3
Inside the housing 1, a cylindrical ring portion 3 </ b> B has a predetermined gap with the inner peripheral surface of the housing 1, and is fitted and fixed to a desired position in the axial direction of the housing 1 with the outer peripheral portion of the blocking portion 5.

On the other hand, the sealing fixing material injection port 5 has a port 51 penetrating through the housing 1 in the radial direction, a socket 52 fixed in the port 51 in a liquid-tight manner, and a liquid-tight fixing in the socket 52. And a potting nipple 53 to be used. The port 51 is formed at a position on the outer peripheral portion of the ring portion 3B to which the ring 3 is fitted and fixed, and has a screw portion on the inner peripheral portion. In addition, socket 5
2 is a substantially cylindrical shape, the inside of which has a large diameter portion 52A and a small diameter portion 52B.
The small diameter portion 52 </ b> B has a screw portion on the outer peripheral portion, and is screwed and fixed to the screw portion and the screw portion of the port 51. Further, the potting nipple 53 is a cylindrical member having an injection port 53A penetrating in the axial direction.
B having a large diameter portion 53C,
3C has a screw portion on the outer periphery, and the screw portion and the socket 5
The second large-diameter portion 52 </ b> A is screwed and fixed to a screw portion provided on the inner peripheral portion. As the potting nipple 53 is screwed and fixed to the socket 52 in this manner, the injection port 5
3A is communicated with the inside of the housing 1. The injection port 53A has a predetermined gap with the ring portion 3B of the ring 3.

A potting cup 7, which is a cup for closing the opening 2, is screwed and fixed to the opening 2 of the housing 1. The potting cup 7 has a substantially concave cross section.

In a state where the potting cup 7 is screwed and fixed to the opening 2, the potting cup 7
A heat insulating material 8 is wound all around the outer periphery of the housing 1 between the housing 1 and the inlet 5 fixed to the housing 1.

Next, using the sealing and fixing device A having the above structure,
A sealing and fixing method by a centrifugal method will be described. First,
A bundle of a large number of hollow fiber membranes 9 to be sealed and fixed is inserted between the opening 2 of the housing 1 and the blocking portion 3A of the ring 3, and then the opening 2 of the housing 1 is opened with a potting cup 7. After sealing, the adhesive 4 is injected into the housing 1 from the injection port 53A of the potting nipple 53. The injected adhesive 4 hits the ring portion 3B of the ring 3 and spreads uniformly in the circumferential direction.
From the potting cup 7 side of the hollow fiber membrane bundle 9 </ b> A housed in the interior hollow to the position of the sealing material inlet 5 side end of the heat insulating material 8 provided on the outer peripheral portion of the housing 1 in order.
The gaps between the hollow fiber membranes 9 and between the hollow fiber membranes 9 and the housing 1 are injected and filled and cured, and the ends of the hollow fiber membrane bundle 9A are sealed and fixed.

Then, a hollow fiber membrane module (not shown) is manufactured by post-processing.

According to the sealing and fixing method using the sealing and fixing device A, since the heat insulating material 8 is wound around the outer periphery of the housing 1 of the sealing and fixing portion 10, the heat is generated when the adhesive 4 is cured. Heat unevenness is reduced, and the occurrence of internal stress is reduced.

Further, in the prior art, the ambient temperature is raised at a high temperature for the purpose of assisting heat generation during curing. However, it can be performed even at room temperature.

Furthermore, the curing time can be shortened.

Since the contact surface between the sealing and fixing portion 10 and the housing 1 is not cooled and can be hardened at a high temperature without fail, the space between the hollow fiber membranes 9 to be adhered and The adhesive strength between each hollow fiber membrane 9 and the housing 1 is improved.

In the above embodiment, the sealing and fixing of the hollow fiber membrane module has been described as an example. However, the present invention is not limited to the hollow fiber membrane module. It can be applied to various sealing and fixing parts as described below.

[0023]

The present invention has the above-described structure and operation. Since a heat insulating material is provided on the outer peripheral portion of the housing located at the sealing and fixing portion, the sealing and fixing material is injected by a centrifugal method as in the prior art. Even in the case of filling, the outer peripheral portion of the housing is no longer cooled, unevenness of heat generated when the sealing and fixing material is cured can be prevented, and generation of internal stress in the sealing and fixing portion after curing can be suppressed. Therefore, the product manufactured by this sealing and fixing method has improved reliability.

[Brief description of the drawings]

FIG. 1 is a half sectional view of a main part showing a sealing and fixing device used in a sealing and fixing method according to an embodiment of the present invention.

FIG. 2 is a half sectional view of a main part showing a sealing and fixing device used in a conventional sealing and fixing method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Opening part 3 Ring 3A Blocking part 3B Ring part 4 Adhesive (sealing fixing material) 5 Sealing fixing material injection port 51 Port 52 Socket 52A Large diameter part 52B Small diameter part 53 Potting nipple 53A Injection port 53B Flange part 53C Large diameter portion 6 hole 7 potting cup (cup) 8 heat insulating material 9 hollow fiber membrane (object to be sealed and fixed) 9A hollow fiber membrane bundle 10 sealing and fixing part A sealing and fixing device

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

Claims (2)

(57) [Claims] 1. An internal hollow housing having an opening, a large number of objects to be sealed and fixed are inserted from the inner periphery of the opening of the housing, the opening is sealed with a cup, and the housing is sealed and fixed. A sealing and fixing method in which a housing is injected and filled through a material injection port, and a gap between each sealing and fixing object and a gap between the sealing and fixing object and the inner periphery of the housing are sealed and fixed with a sealing and fixing material. The sealing and fixing method according to any one of claims 1 to 3, wherein the sealing and fixing are performed with a heat insulating material provided on an outer peripheral portion of the housing located at the sealing and fixing portion. 2. An inner hollow housing having an opening, a cup for closing the opening, a sealing fixing material injection port for injecting and filling a sealing fixing material into a housing provided in the housing. , Wherein a heat insulating material is provided at a position of the sealing and fixing portion on the outer peripheral portion of the housing.