JPS6010642Y2 - Solution separation device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a solution separation device for recovering a concentrated liquid containing valuables, treating waste water, etc., and particularly relates to a solution separation device in which the element configuration is improved to improve separation ability.

Some conventional solution separation devices use a tubular element whose surface is encapsulated with a selectively permeable membrane (hereinafter referred to as membrane), which forms a constant straight flow channel. Therefore, the solution (raw water) can be uniformly distributed over the membrane surface at a high flow rate, resulting in a turbulent flow phenomenon on the membrane surface, which prevents clogging due to the self-cleaning effect and reduces concentration polarization. Although it has the advantage of being suppressed and producing a large amount of flux, a solution separation device using such a tubular element is inevitably large and costly.

Moreover, in the conventional device described above, tubular elements with a circular cross section are used, and a plurality of them are arranged and held in the separator body (pressure cylinder), so the membrane of each circular tubular element is Sludge tends to accumulate on the surface, reducing separation ability.

Therefore, in order to prevent the adhesion and accumulation of slag, as shown in FIGS. By inserting and holding the circular tubular element 6 with a water passage gap inside the construction waist and causing solution turbulence between the circular tubular element 6 and the cartridge tube 5, the membrane 7 on the outer periphery of the element is A solution separation device is also provided which allows the slag that tends to adhere to the solution to flow away.

However, in this solution separation device, a dead space D-5 occurs between the cartridge tubes 5 in the separator body 1, so the number of element sets is restricted and all the membranes 7 cannot be used compared to the volume of the separator body 1. The total effective membrane area is small, and as described above, using the same number of cartridge tubes 5 as circular tubular elements 6 is a waste of materials, increases the number of assembly steps, complicates the structure, and increases costs.

This idea was made in view of the above circumstances, and it has a structure with a large membrane area that ensures the advantages of tubular elements and eliminates the disadvantages, and allows solution separation to be carried out smoothly and efficiently at all times, and has a simple structure. It is an object of the present invention to provide a solution separation device that can reduce assembly man-hours and costs.

A preferred embodiment of this invention will be described below with reference to FIG. 3 and subsequent drawings.

In Fig. 3, 10 is the separator main body as a pressure cylinder;
It is constructed by sealing the openings at both ends of the outer cylinder 10a with an entrance/exit side lid 10b and a product side 110c.

The inlet/outlet side cover 10b has a concentrated liquid outflow path 12 in the center and a solution inflow path 11 sandwiching this, and these solution inflow path 11 and concentrated liquid outflow path 12 are connected to the inside of the separator body 10. is formed in a widening shape.

On the other hand, the product outlet head 1
3 and the water collection head 14 to close the permeated water outlet side opening end of the outer cylinder 10a, and has a center hole 10C1 for fitting into the permeated water discharge pipe portion 14b of the water collection head 14. .

The product outlet head 13 has a plurality of permeate holes 13.
a is installed through the water collecting head 14 and the product outlet head 13, and the permeated water holes 13a and the permeated water discharge pipe section 1 are connected to each other.
4b.

A plurality of elements 15 are incorporated into the separator main body 10 in a unitized state during assembly, and each element 15 has a configuration as described below.

That is, each element 15 is supported by a pair of flat plates 16, 16 to be joined together as shown in FIGS. 4 to 6.

Each of the flat plates 16.16 is rectangular in plane and has the same dimensions, and a plurality of grooves 17 are formed along the longitudinal direction on the opposing surfaces of each plate, and each of the grooves 17 leads to an individual groove. It has a large number of water passage pores 18 that open on the surface.

A pair of such flat plates 16.16 are connected to each other by these groove paths 17.
After bonding them together with an adhesive or the like so that they match, a membrane 20 is stretched on both sides with a water conductive material 19 interposed therebetween.
The element 15 is constructed by firmly fixing both end edges thereof with an end seal tape 21 or the like.

A plurality of elements 15 having the above structure are assembled into a unit in advance when assembled into the separator main body 10, but when unitizing, a pair of left and right spacing members 22 and a pair of upper and lower elements shown in FIGS. 7 and 8 are used. A shielding plate 23, clamping pieces 24 protruding from both longitudinal edges of the shielding plate 23, and a clamping tool 25 are used.

On the facing surface of the spacing member 22, a plurality of fitting grooves 22a into which the longitudinal side edges of the elements 15 are fitted are provided in multiple stages at regular intervals.

In the above process, first, by fitting both edges of the element 15 in the longitudinal direction across the fitting R22a at each opposing position between the pair of spacing members 22, the plurality of elements 15 are arranged so that the surface of each membrane 20 is constant. Assemble and hold the shelves facing each other with a parallel interval of .

Next, the spacer 22 is sandwiched between the upper and lower shielding plates 23, and the upper and lower clamping pieces 24 protruding from both sides in the longitudinal direction are tightened with the clamping tools 25.

Therefore, by loosening the fastener 25, the element 1
5 is pulled out from the spacing member 22 and is detachable.

In this case, the J material piece 24 is the one that is engaged with the shielding plate 23 when assembling the element unit, or the one that engages with the shielding plate 23 when assembling the element unit.
3) may be used.

Further, the groove passage 17 of each element 15 is communicated with each permeate hole 13a of the product outlet head 13 via a reading pipe 26.

Once the unit of the element 15 is assembled in this manner, by assembling the element unit into the outer cylinder 10a, the upper and lower inner walls of the outer cylinder 10a and the shielding plate 23 are connected to each other.
A solution flow path 11a is formed between the upper and lower elements 15 and the shielding plate 23, and a liquid flow path 27 is formed between each element 15.

The solution flow path 11a is a solution inflow path 1 of the entrance/exit side lid 10b that closes one end (left end in FIG. 3) of the outer cylinder 10a.
1 , and also communicates with a liquid passage 27 via an opening 23 a provided on the product outlet head 13 side of the shielding plate 23 , and this liquid passage 27 communicates with the concentrate outflow passage 12 .

In addition, the other end of the outer cylinder 10a (the right end in FIG. 3) is connected to the water collection head 1.
4 and seal with the product side lid 10c.

As described above, a solution separation device is assembled in which a plurality of rectangular flat plate-shaped elements 15 are arranged in parallel at regular intervals across the separator main body 10.

Next, the operation of this solution separation device will be explained.

The raw water, so-called pressure solution, flowing from the solution inflow path 11 passes through the solution flow path 11a and flows from the opening 23a through the liquid passage 27 toward the concentrated liquid outflow path 12, but in the flow process, the solution is Due to the selective permeation effect of the membrane 20, when the water passes through the membrane 20 and the water guide material 19, it is separated into permeated water and a concentrated liquid that does not pass through.

The permeated water that has flowed into the channel 17 through the water passage pores 18 of each element 15 passes through the connecting pipe 26, each of the permeated water holes 13a of the product outlet head 13, and the water collection groove 14a in sequence. The permeated water is guided from the permeated water discharge pipe section 14b to a required recovery section or the like.

On the other hand, the concentrated liquid flowing through the liquid passage 27 is
2 and is discharged.

Further, when a failure occurs in a particular element, the fastener 25 that tightens the spacing member 22 is loosened, and only the element in which the failure has occurred is extracted from the spacing member 22 and replaced.

As explained above, this device has a plate-like structure and a plurality of elements are stretched on both sides of each selectively permeable membrane. Since the membrane area is maintained in an array, the membrane area is significantly increased compared to conventional tubular elements, which eliminates the disadvantage of tubular elements such as the small membrane area, while still maintaining its advantages. Solution separation can be performed smoothly and efficiently at all times.

In addition, the plate-shaped element has a larger membrane area within the separator body of the same volume than a tubular element, and does not require a cartridge tube, etc., so there is no wastage of materials and fewer assembly steps. This can reduce costs.

Further, when only a specific element is to be replaced for maintenance, the replacement work can be speeded up by loosening the fastener, extracting only the element from the spacing member, and replacing the new element.

[Brief explanation of the drawing]

Fig. 1 is a half-cut sectional view showing a conventional solution separation device, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a half-cut side view of the solution separation device showing a preferred embodiment of this invention. , Fig. 4 is a plan view of the same element, Fig. 5 is a sectional view taken along the line ■-V in Fig. 4,
Figure 6 is a sectional view taken along the line ■-■ in Figure 4, and Figure 7 is a cross-sectional view taken along the line ■-■ in Figure 3.
Fig. 8 is a sectional view taken along the line IIX-I-I in Fig. 3; In the figure, 10 is a separator main body, 15 is an element, 17 is a channel, 18 is a water passage pore, and 20 is a selectively permeable membrane.

Claims (1)

[Scope of utility model registration request] In a solution separation device that separates the solution flowing into the separator body into permeate water and concentrated liquid by selective permeation membrane action and flows out from the respective outlet systems, each of a pair of flat plates whose planes are to be joined is A groove is formed along the longitudinal direction of the opposing surface, and a large number of water passage pores are formed on both sides communicating with the groove 7. Both sides of the flat plate in which the water passage pores are formed are covered with a selectively permeable membrane to form an element.The elements are detachably assembled and held in a multi-shelf state using spacing materials so that the selectively permeable membranes face each other with a certain parallel gap. A solution separation device characterized in that the plurality of elements assembled in the separator body are provided in the separator main body.