JPS645925B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a liquid processing apparatus using hollow fiber membranes, in particular, a large number of hollow fiber bundles can be reliably and easily attached to a tube plate provided in a closed container, and the tube This invention relates to a device that can be easily removed from a board.

BACKGROUND ART Conventionally, there have been known filtering devices in which a cylindrical material or a material coated with a superimposing agent on a mesh body is housed between containers (for example, Japanese Patent Publication No. 19626-1971, Publication No. 20316-1974, etc.). The above material has two flanges formed on an adapter attached to the top of the material.
It is attached to the tube sheet by pressing the parts with a fastening metal fitting, or it is attached to the tube sheet by screwing a support section provided at the top of the material into a mounting hole drilled in an equilateral triangular arrangement. In the conventional device, the attachment part of the material to the tube plate is made of metal, so it can be attached by being pressed against the tube plate with a strong pressing force, or it can be screwed into the tube plate.
However, since the hollow fiber membranes that have come into use in many fields in recent years have plastic attachment parts to the tube plate, there is the problem that the plastic will break if the attachment means applied to conventional metal attachment parts are used as they are. It was hot. For this reason, in fluid treatment equipment using hollow fiber membranes, the hollow fiber membranes are usually assembled into a single bundle or multiple bundles and fixed together with adhesive or removable couplings using O-rings, tightening bolts, etc. inside the container. A structure is adopted in which the tube plate is attached to the tube plate provided in the tube plate. However, such structures have important problems, particularly for industrial applications where it is necessary to accommodate as large an area of membrane as possible in a given volume. In other words, it is relatively easy to install hollow fibers in a very compact manner to accommodate as large a membrane area as possible, but from a practical standpoint such as industrial use, it is easy to attach and replace unit hollow fiber bundles as necessary. It is also important to be able to do this.
However, with the conventional structure, it is extremely difficult to attach and detach unit fiber bundles in devices that accommodate large membrane areas.
There was nothing that met both requirements.

The present inventors have arrived at the present invention as a result of intensive studies in order to solve the above-mentioned conventional problems and provide an apparatus that can accommodate a large membrane area and that allows easy attachment and detachment of hollow fiber bundles. That is, the present invention has a large number of hollow fiber bundle mounting holes arranged in an equilateral triangular arrangement in a tube plate into which a hollow fiber bundle is mounted, and a center of one of the equilateral triangles formed by the mounting holes of three adjacent hollow fiber bundles. A large number of tightening bolts embedded in the tube sheet in an equilateral triangular arrangement with A fixing plate that engages with the upper surface of a flange provided on the concentrator section of the hollow fiber bundle accommodated in the three hollow fiber bundle device holes adjacent to the tightening bolt, and a fastening plate that is screwed into the tightening bolt. The fixing plate simultaneously presses the upper surface of the flange provided on the converging tool for the hollow fiber bundle accommodated in three adjacent hollow fiber bundle mounting holes through the packing body by the tightening nut. , is a fluid treatment device using a hollow fiber membrane, characterized in that a large number of hollow fiber bundles are fluid-tightly accommodated in a tube plate by pressing three locations on the upper surface of the flange at equal intervals.

According to the present invention, since the hollow fiber bundle mounting holes are provided in an equilateral triangular arrangement on the tube plate, a device with a large membrane area is provided, and since three adjacent hollow fiber bundles are pressed by a common fixing plate, a unit The hollow fiber bundle can be easily attached and detached, the unit hollow fiber bundle can be securely fixed to the tube plate, and a membrane with as large an area as possible can be accommodated in a predetermined volume.

Next, one embodiment of the device of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing the upper surface of a tube plate on which hollow fiber bundles are arranged in the apparatus of the present invention, and FIG. 2 is a sectional view thereof.

In the present invention, the hollow fiber bundle device holes 3 are arranged in an equilateral triangular arrangement in the tube plate 2, as shown in FIG.
When six mounting holes adjacent to one device hole 3 are connected, six equilateral triangles are formed. A large number of tightening bolts 4 are embedded in an equilateral triangular arrangement with the apex at the center of one of the six equilateral triangles. A fixing plate 5 is inserted into the tightening bolt 4. The fixing plate 5 has a shape such that it engages with a flange 1' formed on the converging tool of the hollow fiber bundle 1 attached to the three attachment holes 3 located at equal distances from the tightening bolts. There is.

The hollow fiber bundle 1 is inserted into mounting holes 3 drilled in a tube plate 2 in an equilateral triangular arrangement, and a fixing plate 5 inserted into the tightening bolts 4 arranged in an equilateral triangular arrangement is tightened with respect to the mounting hole. It is fastened and fixed to the surface of the tube plate 2 with a nut 6 via a packing body 7.

Therefore, the hollow fiber bundle 1 is fixed to the tube plate 2 by pressing the flange 1' formed on the converging tool part by three fixing devices 5 located at equal distances and equally divided in three directions. Ru.

The fixing device consisting of a tightening bolt, a fixing plate, and a tightening nut is one embodiment, and it goes without saying that fixing devices of various other structures can be used. The fixing plate 5 has three arcuate portions 5' around its periphery, and these portions have the function of coming into contact with and fixing the converging tool section 1' of the hollow fiber bundle.

In the device according to the present invention, various polymers such as regenerated cellulose, cellulose derivatives, polyvinyl alcohol, polyacrylonitrile, polymethyl methacrylate, polyamide, polyolefin, polyvinyl chloride, and silicone rubber are used as the hollow fibers. can. It is preferable that the hollow fiber membrane has an outer diameter of 10 to 3000 μm and a membrane thickness of about 10 to 500 μm. Several hundred to several hundred thousand of these hollow fibers are grouped together into a bundle. This becomes a unit hollow fiber bundle. For unit hollow fiber bundles, one end is unified with adhesive and a binding tool, and the hollow fiber holes are opened, and the other end is closed with the hollow fiber holes for each unit fiber, leaving the fibers free without being unified. There are both cases where both ends are of the above-mentioned open shape.

The tube plate provided in the container serves as a mounting plate for the hollow fiber bundle, and also serves as an end plate of the casing that accommodates the hollow fiber bundle. The hollow fiber bundle is inserted through a hole drilled in the tube sheet, and the hollow fiber bundle is fixed to the tube sheet by a fixing device through a packing body using a converging tool portion at one end.

In the device of the present invention, a plurality of hollow fiber bundle mounting holes are arranged in a tube plate so that a plurality of hollow fiber bundles are arranged in an equilateral triangular arrangement, and the hollow fiber bundle mounting holes are arranged in an equilateral triangular arrangement with respect to the hollow fiber bundle mounting holes. It has a hollow fiber bundle fixing device. Furthermore, one fixture usually has three fixing parts so as to fix three hollow fiber bundles surrounding it and equidistant from it. Therefore, a unit hollow fiber bundle is necessarily fixed by three fixing devices located at equal distances and equally divided in three directions, and two of the three fixing devices are used to attach and detach a unit hollow fiber bundle. It can be easily done by just operating one or three things. Since the unit hollow fiber bundle receives equal fixing action from three directions, reliable fixing can be achieved. Since the fixing device can be placed in the remaining tube plate portion where the hollow fiber bundle mounting hole has been bored, the arrangement pitch of the mounting hole is not particularly affected by the size of the fixing device, and can be adjusted according to the original requirements of the fluid treatment device. The determined optimal array pitch can be followed. Therefore, the normal array pitch can be made as small as possible,
The number of hollow fiber bundles arranged within a predetermined cross-sectional area can be increased, and as a result, as large a membrane area as possible can be achieved within a predetermined volume, which greatly improves the economic efficiency of the device and the operating economy of the fluid treatment device. It's convenient.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the structure of an example of a tube plate in the apparatus of the present invention, and FIG. 2 is a partial sectional view thereof. 1... Hollow fiber bundle, 2... Tube plate, 3... Mounting hole,
4... Tightening bolt, 5... Fixing plate, 6... Tightening nut, 7... Packing body.

Claims (1)

[Claims] 1 One of the equilateral triangles formed by a large number of hollow fiber bundle mounting holes 3 arranged in an equilateral triangular arrangement in the tube plate 2 into which the hollow fiber bundles 1 are mounted, and the mounting holes 3 of three adjacent hollow fiber bundles. A large number of tightening bolts 4 embedded in the tube plate 2 in an equilateral triangular arrangement with the center as the apex, the hollow fiber bundles 1 accommodated in the three adjacent hollow fiber bundle mounting holes 3, and the tightening bolts. 4, and a fixing plate 5 that engages with the upper surface of the flange 1' provided on the hollow fiber bundle concentrator portion accommodated in the three hollow fiber bundle mounting holes 3 adjacent to the tightening bolts. The tightening bolt 4
The tightening nut 6 is screwed into the flange provided on the concentrator section of the hollow fiber bundle accommodated in the three adjacent hollow fiber bundle mounting holes via the packing body 7. A hollow fiber membrane is used, which is characterized in that a large number of hollow fiber bundles are liquid-tightly housed in a tube plate by simultaneously pressing the top surface with a fixing plate and pressing three locations on the top surface of the flange at equal intervals. Fluid processing equipment.