JPS5817641B2 - Tubular membrane separation module - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in tubular membrane separation modules.

Modules using permeable membranes are used to separate solvents or solutes from stock solutions, but for ultra-slough filtration, precision swab filtration, etc. that perform separation under relatively low pressure, modules are used for low-pressure operation. It is possible to simplify the

FIG. 1A shows a simple module previously proposed by the present applicant, in which a first
As shown in Figure B, multiple tubular permeable membranes 2', 2'...
are stored in an integrated state, and these tubular permeable membranes 2/, 2/,
... are sealed and fixed to the inner surface of the outer cylinder at both ends with resin 3'.

The tubular permeable membrane has a configuration in which a permeable membrane is provided on the inner surface of a nonwoven fabric tube.

By the way, in a module that uses a tubular permeable membrane, it is possible to increase the membrane area with respect to the flow rate of the liquid to be treated, to increase the flow rate of the liquid to be treated appropriately, or to increase the flow rate of the liquid to be treated to prevent foreign matter from adhering to the membrane surface or for cleaning. It is known to insert a core such as a rod or several spheres into a tubular permeable membrane in order to create turbulent flow.

When using a covered core, a means to prevent the core from escaping at the end of the tubular permeable membrane is required, but it is also necessary to ensure the flow of the raw solution (liquid to be treated) at this point. So,
Generally, it is unavoidable that the escape prevention means has a complicated structure.

The present invention provides a tubular membrane separation module that is equipped with means for preventing the core from escaping, while maintaining its simplicity in the above-mentioned simple module.

That is, in the tubular membrane separation module according to the present invention, a tubular permeable membrane is housed in an outer cylinder, a rod having a flow hole is housed in an end of the tubular permeable membrane, and the rod, the tubular permeable membrane, and the outer cylinder are connected. is sealed and fixed in a water-tight manner, and a core is housed in the tubular permeable membrane, and when the end of the core and the end of the rod abut butt against each other, a trough-like space is secured by facing the abutting point. This structure is characterized in that at least one of the core end and the rod end is chamfered, and the flow hole opening of the rod is open to the valley-shaped space.

The present invention will be explained below with reference to the drawings.

In FIG. 2, 1 is an outer cylinder having a permeate outlet 11;
2, 2, . . . are tubular permeable membranes housed in an integrated state within the outer cylinder 1, and their configurations are the same as those shown in FIGS. 1A and 1B.

3 is several communication holes 31. It is a short rod having..., and is housed within the end of the treated liquid outlet side of each of the above-mentioned tubular permeable membranes 2, 2..., and is connected to the rods 3, 3... and the tubular permeable membranes 2, 2... ... and the outer cylinder 1 are sealed and fixed with a casting resin 4.

5 is a rod-shaped core inserted into the tubular permeable membrane 2, and is molded from lightweight resin such as foamed resin.

In the above, at least one of the core ends and rod ends facing each other is chamfered (in the figure,
The rod end is chamfered into a tapered surface shape a), so that when the core end and the rod end are in butt contact, a valley-shaped space is secured facing the butt point.

The above-mentioned communication hole 31 of the rod 3. ...is open to this valley-shaped space.

In FIG. 2, reference numeral 6 denotes a concentrate outlet 61 (as the stock solution passes through the tubular permeable membrane, the solvent is separated by the permeable membrane,
The cap is attached to one end (concentrate outlet side) of the outer cylinder 1.

Reference numeral 7 denotes a cap having a raw solution inflow lower 1, which is detachably attached to the other end of the outer cylinder 1.

Therefore, core 5. It is easy to replace...

In the above, m indicates the flow direction of the liquid to be treated, and the core end is brought into butt contact with the rod end for the flow of the liquid to be treated.

Even in this butt-contact state, a valley-shaped space is secured facing the contact point, and this valley-shaped space is filled with the communication hole 31 of the rod 3. ... is open, so there is no risk of the rod's circulation hole being blocked by the core end.
Smooth flow of the stock solution through the flow holes of the rod can be guaranteed.

In the above, as shown in FIG. 3A, the rod end 301
It is also possible to chamfer both the core end 501 and the core end 501, or to chamfer only the core end 501 as shown in FIG. 3B.

In addition, these chamfers can be vertical chamfers a as shown in FIG. be.

Furthermore, it is also possible to use, for example, several balls in the core.

As described above, according to the present invention, in a simple module, when the end of the tubular separation tube is sealed and fixed to the end of the outer cylinder, the core can be prevented from escaping by simply sealing and fixing the rod inside the end of the tubular separation tube. Furthermore, it is possible to manufacture a module that allows smooth extraction of the concentrated liquid, and to provide a module with a built-in core that sufficiently maintains the simplicity of a simple module.

[Brief explanation of drawings]

FIG. 1A is an explanatory longitudinal cross-sectional view showing a conventional tubular membrane separation module, FIG. 1B is an explanatory cross-sectional view taken along line b in FIG. 1A, and FIG. 2 is an explanatory view showing a tubular membrane separation module according to the present invention. 3A, 3B, and 3C are explanatory diagrams showing precedents for rods and cores used in the present invention, respectively. In the figure, 1 is an outer cylinder, 2, 2... are tubular permeable membranes, 3
．． 3... is a rod, 31, 31... are communication holes, 4 is resin, 5, 5... are cores, a,... are chamfered surfaces, b
. ... is a valley-shaped space.

Claims (1)

[Claims] 1. A tubular permeable membrane is housed in an outer cylinder, a rod having a flow hole is housed in an end of the tubular permeable membrane, the rod, the tubular permeable membrane, and the outer cylinder are sealed and fixed in a watertight manner, and the tubular permeable membrane is sealed and fixed in a watertight manner. A core is housed in the membrane, and at least one of the core end and the rod end is arranged so as to face the butt point and secure a valley-like space when the core end and the rod end abut and come into contact. A tubular membrane separation module characterized in that one side of the rod is chamfered, and the flow hole opening of the rod is open to the valley-shaped space.