JPS594728Y2 - Separation device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a separation device for separating a solvent or fine solids from a stock solution by permeation treatment using a permeation membrane.

Various separation devices are used to float factory waste liquid or sewage, or to remove salt from seawater.

One of these separation devices is a separation device in which a permeable membrane is provided on the outer or inner surface of a support coil made of a wire wound in a helical shape.

In this separation device, the permeable membrane surface forms unevenness corresponding to the support coil, so the stock solution flowing on the permeable membrane surface causes turbulence.
Although this method has the advantage of suppressing the accumulation of cake on the membrane surface, there is a problem in that when the viscosity of the stock solution is high, the permeation treatment rate is significantly reduced.

The present invention relates to a separation device that solves the problems of the conventional products described above, and includes a support material made by winding an insulating-coated linear electric heating element in a spiral shape, and a permeable membrane provided on the inner or outer surface of the support material. It is.

Hereinafter, examples of the present invention will be explained with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a support material, in which a linear electric heating element 2 such as a nichrome wire or a nickel-chrome steel wire is covered with an electrically insulating film, an adhesive tape, a tube, a heat-shrinkable tube, or the like, using the film as a support. It is insulated and covered with an electrically insulating layer 3 made of epoxy resin or the like, and is wound in a helical shape.

The outer surface of the support material 1 is covered with a bag-shaped membrane selected from reverse osmosis membranes, ultrafiltration membranes, microfiltration membranes, and filtration membranes made of cellulose derivatives, fluororesin, etc., depending on the raw solution to be permeated. A permeable membrane 4 is provided.

Reference numeral 5 denotes a plug for supporting the bottom of the permeable membrane 4, and is fitted into the end of the support member 1.

Although not shown, the end of the linear electric heating element 2 within the support member 1 is connected to a power source via a temperature control device such as a temperature fuse or thermostat.

Therefore, in order to permeate the stock solution using this separation device 6, as shown in FIG.
When the stock solution is pumped through the stock solution inlet 9 of the container 8, the permeate that has been permeated by the permeable membrane 4 flows into the space 10 formed by the support material 1, so that the permeate is transferred to the permeate collection port 11 of the container 8. The permeation treatment can be performed by discharging the concentrated stock solution from the stock solution outlet 12.

In the above example, a bag-shaped permeable membrane was used as the permeable membrane 4, but the present invention may use a cylindrical permeable membrane or a sheet-shaped permeable membrane spiral-wound or swivel-wound.

Figure 3 shows a suitable example when the pressure of the stock solution is particularly high.
The inner surface of the support material 1 is made of a porous synthetic resin tube reinforced with fibers such as glass fiber, carbon fiber, nylon, polyester, or cotton, a sintered tube obtained by sintering metal powder or synthetic resin powder, or a perforated synthetic resin. A reinforcing material 13 in the form of a tube, a perforated metal tube, a synthetic resin foamed tube, or the like having a liquid passage and having high strength is arranged.

When the separation device 6 shown in FIG. 3 is used, the permeate flows through the reinforcing material 13 and is collected in the hollow portion 14 thereof.

Further, as shown in FIG. 4, reinforcing material 13 may be filled with thin rod-like bodies or linear bodies made of metal, synthetic resin, etc. in the support material 1 so as to leave a space 10 for the permeate to flow. Also, the same effect as in the case of FIG. 3 can be obtained.

In this case, a thin tubular body can also be used as the reinforcing material 13.

In addition, the reference numeral 15 indicates that the permeable membrane 4 and the support material 1 are in close contact with each other, reducing the permeation function in the contact area, or that the permeable membrane 4 is inserted into a trough formed by winding the support material 1 in a spiral shape. This spacer is used to prevent water from being washed away, and liquid-permeable materials such as non-woven fabric, woven fabric, filter paper, and net-like material are used.

Although the above-mentioned FIGS. 1 to 4 are examples of separation devices used as an external pressure type, the separation device of the present invention can also be used as an internal pressure type.

For example, as shown in FIG. 5, a permeable membrane 4 is provided on the inner surface of the support material 1, a pressurized stock solution is guided to the inner surface of the permeable membrane 4, and the permeated liquid that has been permeated by the permeable membrane 4 is transferred to the support material. It is possible to use an internal pressure type separation device with a structure that leads to one side.

In the case of this internal pressure type, for the same reason as the external pressure type,
A spacer 15 may be interposed between the permeable membrane 4 and the support material 1.

Furthermore, since the supporting material 1 wound in a helical shape has a large resistance force against radially outward force, the reinforcing material 13 is hardly required even if the pressure of the stock solution is high, but if it is particularly desired, A tubular reinforcing member 13 similar to that shown in FIG. 3 can also be arranged on the outer surface of the support member 1.

The present invention is constructed as described above, and since an electric heating element is built into the device, it can heat the liquid to be permeabilized and reduce its viscosity, so it can efficiently handle highly viscous liquids. Transparent processing is possible.

In addition, if the permeable membrane is installed directly on the support material or if the spacer is relatively thin, the permeable membrane surface will be uneven, causing turbulence in the stock solution and preventing cake buildup. obtain.

Furthermore, it has advantages such as simple structure and easy manufacture.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an example of the separation device according to the present invention;
FIG. 2 is a longitudinal cross-sectional view showing an example of the use of the separation device shown in FIG. 1, and FIGS. 3 to 5 are cross-sectional views showing other examples. DESCRIPTION OF SYMBOLS 1...Supporting material, 2...Linear electric heating element, 3...Electric insulating layer, 4...Permeable membrane,
6...Separation device, 13...Reinforcement material, 1
5...Spacer

Claims (3)

[Scope of utility model registration request] (1) A separation device in which a permeable membrane is provided on the inner or outer surface of a support material made by winding an insulating-coated linear electric heating element in a spiral shape. (2) The separation device according to claim 1, wherein a spacer is interposed between the support material and the permeable membrane to prevent the liquid from passing through. (3) The separation device according to claim 1 or 2, wherein the supporting material is reinforced with a reinforcing material.