JP5553073B2 - Housing-equipped hollow fiber membrane module - Google Patents

Description

The present invention relates to a hollow fiber membrane module. More specifically, the present invention relates to a hollow fiber membrane module in which a bundle tube containing a hollow fiber membrane group is attached to a housing via an O-ring .

Currently, porous hollow fiber membranes such as porous ceramic hollow fiber membranes and porous carbon hollow fiber membranes are effectively used as liquid separation membranes and gas separation membranes. When using such a porous hollow fiber membrane, it is necessary to fix and seal them, and for this purpose, a through-hole drilling in which a porous ceramic hollow fiber membrane group is fitted to the bundled tube end The present applicant has previously proposed a porous ceramic hollow fiber membrane module or the like that is inserted into a through hole of a flat plate and the outer surface side of the through hole drilled flat plate is covered with a glass sealing material. Here, since the bundled tube is basically cylindrical , an O-ring as a seal member is disposed in a groove for fitting a seal member provided on the inner peripheral surface of the housing, and sealing is performed when the housing is mounted ( Patent Documents 1-2).

Here, when the module is mounted on the housing, it is necessary to insert the module into the housing while receiving the tightening force of the seal member. An O-ring or the like is generally used as a sealing member on such a cylindrical outer peripheral surface. For example , as shown in FIG. 3, after the insertion (b) from the state before the bundled tube is inserted into the housing (b). Through this state, the O-ring 1 passes through the sealing portion where the O-ring 2 is to be sealed. Thus is poor wearability during insertion of the module, and the like resulting O-ring is twisted, which may cause the problem of reducing the sealing properties. This is the same when two grooves for fitting the seal member are provided not on the outer peripheral surface of the bundled tube but on the inner peripheral surface of the housing.

Here, as shown in FIG. 4, the diameter of the O-ring 2 is made larger than that of the O-ring 1 and until the bundled tube is inserted into the housing shown in FIG . It is also conceivable to improve the mountability by eliminating the insertion resistance when passing through the seal portion and finally setting the state after (b) after inserting the bundling tube into the housing. However, for a larger diameter O-ring, a larger space is required in the housing, and the cost is higher than when an O-ring having the same diameter is used .

JP 2004-267852 A JP 2003-251164 A

An object of the present invention is to provide a housing-mounted hollow fiber membrane module in which the O-ring of the same size is used and the mounting property to the housing is improved.

An object of the present invention is to insert a hollow fiber membrane module composed of a bundled tube containing a hollow fiber membrane through a hollow fiber membrane module insertion portion provided at one end of a housing, so that the outer peripheral surface of the bundled tube and the bundled tube are inserted. In the housing-mounted hollow fiber membrane module in which at least two seal members are arranged in the gap with the inner peripheral surface of the housing that accommodates
O provided on the inner peripheral surface of the end located on the side opposite to the hollow fiber membrane module insertion portion of the housing and the outer peripheral surface of the bundled tube corresponding to the end located on the hollow fiber membrane module insertion portion side of the housing. This is achieved by a housing-mounted hollow fiber membrane module in which a hollow fiber membrane module is mounted on a housing by mounting O-rings of the same size in the grooves for ring mounting.

The housing-attached hollow fiber membrane module according to the present invention comprises a hollow fiber membrane module comprising a bundled tube containing hollow fiber membranes such as a porous ceramic hollow fiber membrane and a porous carbon hollow fiber membrane, and an outer peripheral surface of the bundled tube. When installing at least two seal members in the gap with the inner peripheral surface of the housing and mounting them on the housing, both of the seal members are O-rings of the same size, thereby maintaining space saving and avoiding cost increase. doing.

Also, one O-ring fitting groove is provided on the inner peripheral surface of the end located on the opposite side of the housing from the hollow fiber membrane module insertion part, and the other O-ring fitting groove is provided as the hollow fiber membrane module insertion part. By providing it on the outer peripheral surface of the bundled tube corresponding to the end located on the side, the insertion resistance when mounting the hollow fiber membrane module to the housing is reduced, and deformation or breakage of the O-ring caused by resistance due to increased number of insertions Even when the hollow fiber membrane module is used after being replaced several times, an excellent effect of maintaining the sealing performance is obtained.

FIG. 2 is a half-cut sectional view showing one aspect of mounting the hollow fiber membrane module according to the present invention on the housing as a state during (a) and after (b) insertion of the hollow fiber membrane module into the housing . FIG. 2 is a half-cut sectional view showing a state in which both ends of the hollow fiber membrane module according to the present invention are mounted in separate housings as a state after the hollow fiber membrane module is mounted in the housing . FIG. 6 is a half-cut sectional view showing an aspect of mounting a conventional hollow fiber membrane module on a housing as a state before (a) and after (b) insertion of the hollow fiber membrane module into the housing . FIG. 6 is a half-cut sectional view showing another aspect of mounting the conventional hollow fiber membrane module on the housing as a state during (a) and after (b) insertion of the hollow fiber membrane module into the housing .

As shown in FIGS. 1 and 2, the housing-attached hollow fiber membrane module includes a hollow fiber membrane module 5 including a bundled tube 4 containing the hollow fiber membrane 3, and an outer peripheral surface of the bundled tube 4 and an inner periphery of the housing 6. At least two seal members are arranged in the gap with the surface and are mounted on the housing 6. One mode of mounting the hollow fiber membrane module on the housing is shown in FIG. (a) shows a state in the middle of inserting the hollow fiber membrane module into the housing, and (b) shows a state after the insertion. Here, as the housing 6, in addition to an integral housing that can accommodate the entire hollow fiber membrane module 5 shown in FIG. 1 in its tube, both ends of the hollow fiber membrane module 5 as shown in FIG. Any of the divided housings that can be accommodated separately can be used.

O-rings of the same size are used. By making all the O-rings the same size , it is possible to maintain the space saving in the housing and to avoid an increase in cost due to the use of O-rings of different sizes .

In the integrated housing shown in FIG. 1, it is located on the inner peripheral surface of the other end 9 of the housing located on the side opposite to the hollow fiber membrane module insertion portion 7 and on the housing hollow fiber membrane module insertion portion 7 side. A groove for fitting an O-ring is provided on the outer peripheral surface of the bundled tube corresponding to the one end 8 of the housing. Each of the grooves for receiving the O-rings 1 and 2 has the same dimensions, that is, the groove depth and the groove width, and the groove provided in the other end 9 of the housing is formed by denting the inner peripheral surface of the housing. The groove provided in the portion 8 is formed by providing a protruding portion having a recess on the outer peripheral surface of the bundled tube. In these figures, the depth of the groove for fitting the O-rings 1 and 2 is set to be smaller than the diameter of the rubber cross section of the O-rings 1 and 2, thereby allowing the hollow fiber membrane module 5 to be watertight in the housing 6. It becomes possible to attach with.

In the split housing shown in FIG. 2, the inner peripheral surface of the housing end 9 located on the opposite side of the hollow fiber membrane module insertion portion 7 and the housing end on the hollow fiber membrane module insertion portion 7 side are also provided. A groove for fitting O-rings 1 and 2 is provided on the outer peripheral surface of the bundled tube corresponding to the portion 8. In this case, since it becomes easy to mount at least two O-rings 1 and 2 at each end, it is possible to easily mount at least four O-rings as a whole. Also in the case of this figure, the depth of the groove for fitting the O-rings 1 and 2 is set smaller than the diameter of the rubber cross section of the O-rings 1 and 2, whereby the hollow fiber membrane module 5 is sealed in the housing 6. It becomes possible to attach with.

Regardless of the housing, the housing end provided with the O-ring fitting groove located on the inner peripheral surface of the housing or the outer peripheral surface of the bundling tube It refers to the position facing the bundled tube side end excluding the portion provided with the air or fluid inflow / outflow holes provided in the tube side peripheral portion. That is, the gap generated between the inner peripheral surface of the housing and the outer peripheral surface of the bundled tube generated in this part is reliably sealed using a seal member, so that the fluid before and after passing through the hollow fiber is completely isolated. be able to.

1, 2 O-ring 3 Hollow fiber 4 Bundled tube 5 Hollow fiber membrane module 6 Housing 7 Hollow fiber membrane module insertion part
8 housing one end
9 Housing other end 10 Housing mounted hollow fiber membrane module

Claims (4)

A hollow fiber membrane module composed of a bundled tube containing a hollow fiber membrane is inserted from a hollow fiber membrane module insertion portion provided at one end of the housing, and an outer peripheral surface of the bundled tube and an inner peripheral surface of the housing for accommodating the bundled tube In the housing-attached hollow fiber membrane module in which at least two seal members are arranged in the gap between and attached to the housing,
O provided on the inner peripheral surface of the end located on the side opposite to the hollow fiber membrane module insertion portion of the housing and the outer peripheral surface of the bundled tube corresponding to the end located on the hollow fiber membrane module insertion portion side of the housing. the groove of the ring fitting wearing by allowed to fit each O-ring of the same size both housing mounted hollow fiber membrane module was allowed mounted hollow fiber membrane module into the housing. The housing-mounted hollow fiber membrane module according to claim 1, wherein the housing is an integral housing that can accommodate the entire hollow fiber membrane module therein. The housing-mounted hollow fiber membrane module according to claim 1, wherein the housing is a split type housing that can separately accommodate both ends of the hollow fiber membrane module. A hollow fiber membrane module composed of a bundled tube containing a hollow fiber membrane is inserted from a hollow fiber membrane module insertion portion provided at one end of the housing, and an outer peripheral surface of the bundled tube and an inner peripheral surface of the housing for accommodating the bundled tube In the manufacturing method of the housing-attached hollow fiber membrane module in which at least two seal members are arranged in the gap between the two and attached to the housing,
A hollow fiber membrane module in which an O-ring is inserted into a groove for fitting an O-ring provided on the outer peripheral surface of a bundled tube corresponding to an end located on the hollow fiber membrane module insertion portion side of the housing is connected to the hollow fiber of the housing. Each of the O-ring fitting grooves provided on the inner peripheral surface of the end located on the opposite side of the membrane module insertion portion is mounted on a housing in which an O-ring of the same size is fitted. Manufacturing method of housing-mounted hollow fiber membrane module.

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