JP3340339B2 - 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 an external pressure type membrane module provided immersed in a liquid to be treated.

[0002]

2. Description of the Related Art In the treatment of night soil, domestic wastewater, industrial wastewater, seawater desalination, and the like, an external pressure type membrane module provided as immersed in a liquid to be treated, as shown in FIGS. There are a plurality of tubular ceramic films 1 supported by headers 2 and 3 and arranged in parallel at intervals.

The header 2 has a suction chamber 5 formed by a face plate 4 and a suction port 6 for communicating the suction chamber 5 with the outside. One end of the hole is formed with a hole 7
And is opened to the inside of the suction chamber 5, and is fixed to the face plate 4 by the adhesive 8. The other end of the ceramic film 1
It is abutted against the header 3 and fixed by the adhesive 9.

A pair of plastic guide plates 10, 10 facing each other across the two headers 2, 3 are arranged outside the arranged ceramic films 1 for the purpose of protecting and rectifying the ceramic films 1. Are fixed to both headers 2 and 3 with an adhesive or the like.

A plurality of reinforcing plates 11 made of plastic, rubber, or the like are provided at a plurality of positions at appropriate intervals along the longitudinal direction of the ceramic film 1, here, at two positions.
They are arranged in parallel with each other between 0 and 10 and fixed at their ends to the guide plate 10 by an adhesive plate or the like. A hole 12 slightly larger than the outer diameter of the ceramic film 1 is formed in the reinforcing plate 11, and the ceramic film 1 is inserted through the hole 12 so that an appropriate gap is formed between the ceramic film 1 and the inner surface of the hole 12. Supported.

[0006] When performing the filtering by such membrane module, immersing the membrane module in a liquid to be processed, such as sludge mixture, flowing the liquid to be treated. Then, the liquid to be treated is rectified by the guide plate 10 and passes between the ceramic films 1 as shown by the arrow in FIG. (The natural head of the liquid) in the ceramic membrane 1
The clear water 13 that has passed through the ceramic membrane 1 is taken out through the suction chamber 5 and the suction port 6 to the outside.

At this time, a bending moment due to the flow of the liquid to be treated acts on each of the ceramic films 1, and each of the ceramic films 1 has two holes 1 in the reinforcing plate 11 along the longitudinal direction.
2 and is supported by the contact between the outer surface and the inner surface of the hole 12, so that deformation and breakage are prevented.

[0008]

However, in the conventional membrane module described above, the holes 7 in the face plate 4 and the reinforcing plates 11
Although it is difficult to form the holes 12 of the ceramic film 1 with high precision and it is difficult to form the ceramic film 1 without bending, the ceramic film 1 is formed with the holes 7 of the face plate 4 and the reinforcing plates 11 and 11.
(The other end of the ceramic film 1 is free and the header 3 is supported).
), The assembly of the membrane module is not easy, and there is a problem in strength because the bending stress generated during the assembly remains in the membrane module.

An object of the present invention is to solve the above problems and to provide a durable membrane module which can be easily manufactured.

[0010]

In order to solve the above problems, a membrane module of the present invention is an external pressure type membrane module provided by being immersed in a liquid to be treated, and comprises a plurality of tubular ceramic membranes. And one end of each ceramic membrane
One header arranged in parallel with a space between
Fix the other end of the film with the gap between them free.
And the other header that, opposite each other on the outside of the array ceramic membrane disposed passing between the two headers, a pair of guide plates for guiding the flow of the liquid to be treated to protect the ceramic membrane, a ceramic membrane A plurality of membrane insertion holes are disposed at approximately the center in the longitudinal direction between the two guide plates and formed.
And one reinforcing plate for supporting the ceramic film inserted therein.

Preferably, a reinforcing plate formed of an elastic material such as rubber is used. According to the above configuration, since one reinforcing plate is disposed at substantially the center of the ceramic film in the longitudinal direction, the ceramic film is substantially supported at two points by the header and the reinforcing plate, and almost no bending stress is generated. do not do. Such a membrane module can be manufactured more easily than before, and the strength is improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the membrane module according to one embodiment of the present invention has substantially the same configuration as the conventional one described with reference to FIGS. The same reference numerals are given and the detailed description is omitted.

In this membrane module, a plurality of tubular ceramic membranes 1 are provided with a header 2,
The ceramic membranes 1 are supported in parallel and arranged in parallel at an interval. One end of each ceramic membrane 1 is inserted into a hole 7 formed through the face plate 4 of the header 2 to open inside the suction chamber 5. ,
The ceramic film 1 is fixed to the face plate 4 by an adhesive 8, and the other end of the ceramic film 1 is abutted against the header 3 and fixed by an adhesive 9.

This membrane module differs from the conventional one in that the reinforcing plate 11 for supporting the ceramic film 1 is arranged only at a substantially central position in the longitudinal direction of the ceramic film 1. The ceramic membrane 1 is inserted into the hole 12 of the reinforcing plate 11,
It is supported in a state where an appropriate gap is formed between the hole 12 and the inner surface thereof.

According to the above configuration, the ceramic membrane 1 is supported at three points: the face plate 4 of the header 2, the reinforcing plate 11 and the header 3. 4 is inserted through the hole 7 of the reinforcing plate 11 and the hole 12 of the reinforcing plate 11, and then the other end of the free state is fixed to the header 3 by the adhesive 9, so that two points are substantially formed by the face plate 4 and the reinforcing plate 11. As a result, bending stress during manufacturing is unlikely to occur.

Therefore, no bending stress remains during manufacturing,
A strong and robust membrane module can be realized, and its manufacture is easier than before. When the membrane module is immersed in the liquid to be treated and subjected to filtration, a bending moment due to the water flow acts on the ceramic membrane 1, but the ceramic membrane 1 can be sufficiently supported by one reinforcing plate 12. The deformation of the ceramic film 1 due to the bending moment hardly occurs, and the breakage is prevented.

If the reinforcing plate 11 is made of an elastic material such as rubber, bending stress is less likely to be generated. However, a plastic plate having a hole 12 in which an appropriate gap is formed is used. Is also good.

[0018]

As described above, according to the present invention, the reinforcing plate is provided only at a substantially central position in the longitudinal direction of the ceramic film, and the ceramic film is substantially supported at two points of the header and the reinforcing plate. Because it can be manufactured more easily than before,
Bending stress during manufacturing does not remain, and a durable membrane module can be realized.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an overall configuration of a membrane module according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing the entire configuration of a conventional membrane module.

FIG. 3 is an explanatory diagram showing a state in which the membrane module of FIG. 2 is immersed in a liquid to be treated.

[Explanation of symbols]

 1 Ceramic membrane 2, 3 Header 10, 10 Guide plate 11 Reinforcement plate 12 holes

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshiya Ozaki 2-1-1 Nishijima, Nishiyodogawa-ku, Osaka-shi, Osaka Inside Kubota Shin-Yodogawa Plant (56) References JP-A-3-137922 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B01D 61/00-65/10 C02F 1/44

Claims (2)

(57) [Claims] 1. An external pressure type membrane module provided by being immersed in a liquid to be treated, wherein a plurality of tubular ceramic membranes and one end of each ceramic membrane are spaced apart from each other.
One header arranged in parallel and the other end of each ceramic membrane
The other header that fixes the parts with the space between them free
When disposed passing opposite each other on the outside of the array ceramic film between two header, a pair of guide plates for guiding the flow of the liquid to be treated to protect the ceramic membrane, the longitudinal direction substantially in the center of the ceramic membrane Position between the two guide plates, and the inside of each of a plurality of formed membrane insertion holes
A membrane module comprising : one reinforcing plate that supports an inserted ceramic membrane . 2. The membrane module according to claim 1, wherein the reinforcing plate is formed of an elastic material such as rubber.