JP2007054813A - Device for supplying copper ion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for supplying a copper ion to water capable of effective copper ion elution, which can take place quantitatively from the theoretically set value of the current obtained by the amount of water flow per unit and the desired concentration of the copper ion. <P>SOLUTION: The device for supplying the copper ions to the water includes a group of electrodes comprising a plurality of pairs of the copper electrodes which are disposed evenly spaced and parallel to one another and a power source applying a DC voltage to each of the pairs of the electrodes. The device keeps the group of the electrodes inserted in a water conduit having a square or rectangular cross section so that the copper electrodes are disposed parallel with the water flow direction and the edge of the electrode parallel with the water flow direction is in absolute contact with the wall of the conduit. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus for supplying copper ions to water, particularly fresh water, and more specifically, copper ions effective for sterilization of pathogenic microorganisms, sharks, etc. during the cultivation of freshwater fish, hatching of freshwater fish eggs, etc. The present invention relates to an apparatus for quantitatively supplying copper ions into water by electrolysis using an anode.

Conventionally, as a copper ion supply device in a water flow system, for example, a cylindrical water pipe includes a copper anode pipe and a conductive material cathode pipe accommodated in the pipe, and the longitudinal direction of these pipes A copper ion elution device or the like in which is parallel to the water flow direction is known (for example, see Patent Document 1).
JP-A-8-229567

However, the copper ion elution device is particularly suitable for a system such as seawater having a high electrical conductivity to efficiently elute copper ions, but in fresh water having a low electrical conductivity, the elution efficiency of copper ions is low. Not necessarily satisfactory.
In addition, the concentration of copper ions in the aquatic environment when freshwater fish are cultivated or when eggs of freshwater fish are hatched is harmful to fish if it becomes too high. Therefore, it is necessary to strictly control the concentration. Therefore, it is important to supply fresh water having a stable copper ion concentration by controlling the current value. From this reason, an apparatus capable of quantitatively supplying copper ions into water is desired.

In view of this, the present inventors first conducted various studies on an apparatus that efficiently elutes (generates) copper ions even in fresh water in a water flow system and supplies them into water. As a result, the copper ion supply apparatus 1 shown in FIG. Produced.
The figure is a cross-sectional view and a left side view of the copper ion supply device 1, and a plurality of pairs of equidistant parallels are arranged in the water conduit 3 in the cylindrical water conduit 2 made of an insulating synthetic resin (vinyl chloride resin or the like). The electrode group 4 consisting of the long rectangular copper electrode plates 4a ′, 4a, 4b ′, 4b,..., And the copper electrode plates 4a ′, 4a, 4b ′, 4b,. (In the same figure, the copper electrode plate is horizontally arranged).
In the figure, 5a and 5b are poles made of copper or the like that give one polarity and the other polarity, respectively, and 6a and 6b are terminal rods made of stainless steel or the like, and the heads of the poles 5a and 5b. The tip of the screw hole is screwed into the screw hole and connected to a DC power source (not shown) via a connector (not shown). 7a and 7b are copper electrodes made of insulating synthetic resin (vinyl chloride resin, etc.) Reference numerals 8a and 8b denote flanges made of insulating synthetic resin (vinyl chloride resin or the like) on the inlet side and outlet side of the water flow, respectively.

  And when examining the elution state of copper ions with this device, elution of copper ions is efficient, but in operation by setting the theoretical current value obtained from the amount of water per hour and the desired copper ion concentration, It has been found that a phenomenon occurs in which the copper ion concentration deviates from the desired copper ion concentration or is unstable.

Therefore, as a result of further study, as described above, when the electrode group 4 (square or rectangular in cross section perpendicular to the water flow direction F) is inserted in the water conduit 3 in the cylindrical water conduit 2, this passage is used. In the water pipe 3, the flow velocity of water is large in the bowl-shaped spaces 9 a, 9 b, 9 c, 9 d formed on the upper, lower, left and right sides of the outer edge of the electrode group 4 in the water flow direction F. The flow rate of water is reduced by resistance (water pressure loss, retention) due to the copper electrode plates 4a ′, 4a, 4b ′, 4b,..., And furthermore, in these bowl-shaped spaces 9a, 9b, 9c, 9d, Since the elution of copper ions was extremely small, it was found that quantitative elution of copper ions based on the setting of the theoretical current value and supply to water was difficult.

  This invention is made | formed in view of such a subject, The place made into the objective is calculated | required from the amount of water flow per unit and desired copper ion concentration while the elution of a copper ion is efficient. An object of the present invention is to provide an apparatus for supplying copper ions into water, which can be quantitatively performed with respect to a theoretical current set value.

Means to solve the problem

  As a result of intensive investigations to achieve the above object, the present inventors have found that the inner wall of the cylindrical water pipe 2 (the peripheral surface of the water pipe 3) and the outer edge of the electrode group 4 in the water flow direction F in FIG. The formed bowl-shaped spaces 9a, 9b, 9c, 9d are closed with a spacer having the same shape, and the outer edge of the water flow direction F is connected to the newly formed water passage pipe having a square or rectangular cross section. By fitting in close contact with the wall of the water conduit, copper ions are efficiently and quantitatively eluted from the water flow per unit and the theoretical current set value in the water conduit and supplied to the water. New knowledge of what can be obtained has been obtained, and the present invention has been completed based on this knowledge.

That is, the copper ion supply apparatus of the present invention includes an electrode group composed of a plurality of pairs of equally-spaced parallel copper electrode plates, and a power source for applying a DC voltage between each pair of copper electrode plates. An apparatus for supplying ions,
In the electrode group, the copper plate is parallel to the water flow direction in a water passage having a square or rectangular cross section, and the outer edge portion of the electrode group in the water flow direction is in close contact with the water pipe wall. It is characterized by being fitted in.

  Another preferred embodiment of the copper ion supply apparatus of the present invention is characterized in that a polarity conversion mechanism for changing the polarity of the DC voltage to be applied is provided between the electrode group and the power source.

The invention's effect

  According to the copper ion supply device of the present invention, in the water conduit, water is allowed to pass only between the copper electrode plates, and the flow rates thereof are also substantially equal. , Can be eluted quantitatively with respect to the amount of water flow per unit and the theoretical current set value, and can be supplied into water.

  Below, the copper ion supply apparatus of this invention is demonstrated in detail.

  First, the copper ion supply apparatus of the present invention prevents the generation of copper ions effective for sterilization of pathogenic microorganisms, sharks, etc. during the cultivation of fish, particularly freshwater fish, and the hatching of eggs, and further the generation of algae and the like. It is suitably used as an apparatus for supplying copper ions such as fresh water to fresh water.

  The water flow system may be either a water supply system or a water circulation system, but the former is adopted from the viewpoint of maintaining a suitable concentration of copper ions in freshwater fish farming and the like.

  The most characteristic feature of the copper ion supply device of the present invention is that, as described above, an electrode group consisting of a plurality of pairs of equally spaced parallel copper electrode plates in a square or rectangular cross-section water passage, So that the outer edge of the electrode group in the water flow direction is in close contact with the water passage wall, that is, the upper, lower, left and right sides of the outer edge of the electrode group in the water flow direction. By fitting and attaching the electrode group to the water pipe without substantially forming a space between the water pipe wall and the water pipe, the speed of the water flow between the copper electrode plates is made substantially equal and the residence is maintained. To solve this problem, copper ions are efficiently and quantitatively eluted with respect to the theoretical current set value and supplied to water.

As the above-mentioned square or rectangular water flow pipe, a spacer formed by a square or rectangular square pipe, or a cylindrical pipe, as described above, is inserted along the inner wall of the pipe-like space. There are no particular restrictions on newly formed products. Since the copper ion supply apparatus of the present invention is generally used under low water pressure, there is no problem with the former (for example, see Example 1 below), and under high pressure. Among the special specifications used, those according to the latter (for example, see Example 2 described later) are preferable from the viewpoint of pressure resistance.
In addition, as a hook-shaped spacer that closes the space such as the hook-shaped space, a spacer made of an insulating synthetic resin such as vinyl chloride resin is used.

The electrode group is an assembly composed of a plurality of pairs of copper electrode plates arranged in parallel at equal intervals, that is, each copper electrode plate has substantially the same shape and the same surface area. It has a rectangular shape with a long water flow direction.
And there are no particular restrictions on the logarithm, spacing, electrode plate surface area, long side length, etc. of this copper electrode plate, and it is appropriately selected and determined according to the cross-sectional area of the water conduit, the desired copper ion concentration, etc. Is done.
The copper electrode plate is not particularly limited as long as it elutes copper by electrolysis, and materials such as pure copper and copper alloy are used as appropriate.
Furthermore, the material for forming the water conduit is not particularly limited as long as it is insulating and hard, but for example, an insulating synthetic resin such as a vinyl chloride resin is preferable.

Each pair of one and the other copper electrode plate in the electrode group is connected to a pole column that gives polarity (positive or negative), and a screw hole formed in the head thereof. A terminal bar is screwed to the terminal bar, and the terminal bar is connected to a DC power source via a connector.
The positional relationship between one pole column and the other pole column connected to the copper electrode plate is not particularly limited as long as there is no problem with electrolysis. For example, both pole columns may have an inlet side or an outlet side in the water flow direction. Appropriate positional relationships such as the end of each copper electrode plate at substantially the same position, such as one pole column on the inlet side of the water flow and the other pole column as the end portion of each copper electrode plate on the outlet side Should be adopted.

In addition, a polarity conversion mechanism that changes the polarity of the DC voltage to be applied is provided between the electrode group and the power source. For example, if the polarity is periodically changed, the copper electrode plate can be evenly consumed. The effect of is obtained and is preferable.
Furthermore, the copper ion supply device of the present invention may be installed horizontally, but standing up and using the up-flow method, such as smooth discharge of hydrogen gas generated by electrolysis, etc. It is preferable from the viewpoint.

FIG. 2 is a cross-sectional view and a left side view showing an embodiment of the copper ion supply apparatus of the present invention.
In this figure, this copper ion supply device 31 is provided with a plurality of pairs of long squares (water flow direction is long side) in a water passage 33 having a square or rectangular cross section in a water passage (square or rectangular square tube) 32. The electrode group 34 is made up of copper electrode plates 34a ′, 34a, 34b ′, 34b,... Arranged in parallel at equal intervals, and these copper electrode plates 34a ′, 34a, 34b ′, 34b,. The outer edge of the electrode group 34 in the water flow direction F is fitted so as to be in close contact with the wall of the water conduit 33 so as to be parallel to the water flow direction F (in the figure, a copper electrode plate 34a ′). , 34a, 34b ′,... Are horizontally arranged.)

The electrode group 34 is configured as follows, for example, and is supported and fixed in the water pipe 32.
In this electrode group 34, one pole pole 35a made of copper or the like has a hole provided at the end of the water flow inlet side of each pair of copper electrode plates 34a, 34b,. It is inserted into a ring spacer K35a1 made of copper or the like interposed between the plates, and the lower end portion of this pole column 35a is screwed into a nut K35a3 made of copper or the like (inserted into a recess on the inner surface of the water pipe 32). Thus, the copper electrode plates 34a, 34b,... Are fixed to the pole column 35a and are electrically connected.
Further, when the pole 35a is drilled in the head portion 35a2 (the upper end of which is inserted into the recess of the inner surface of the water conduit 32), a terminal rod 35a4 made of stainless steel or the like is inserted into the screw hole in the outer wall of the water conduit 32. The electrode group 34 is supported and fixed in the water pipe 32 by passing through the wall of the water pipe 32 through a support 35a5 having a through hole attached thereto.
Incidentally, 35a6 and 35b6 are O-rings made of silicon rubber or the like, thereby ensuring water tightness.

Further, a rod-shaped electrode plate support member 36a made of an insulating synthetic resin (vinyl chloride resin or the like) is provided in the vicinity of the downstream side of the electrode column 35a, and the other copper electrode plates 34a ′, 34b ′,. Of the other copper electrode plates 34a, 34b,... Of each pair and the opposite ends thereof, and the copper electrode plates 34a ', 34a, 34b', 34b,. Insulating ring spacer S36a1 (for example, made of insulating synthetic resin (vinyl chloride resin) or the like above and below the ring spacer, for example, made of synthetic resin (silicon rubber synthetic resin or the like) having insulation and elasticity, etc. Ring spacer S sandwiched between ring spacers, ring spacer S made only of a synthetic resin (silicon rubber synthetic resin, etc.) having insulating properties and elasticity, etc. The portion is screwed into a nut S36a3 made of an insulating synthetic resin (vinyl chloride resin or the like). And the head part 36a2 and nut S36a3 of this electrode plate support member 36a are each inserted in the recessed part of water pipe 32 inner surface.
In this way, the copper electrode plates 34a ′, 34a, 34b ′, 34b,... Are supported and fixed in the water conduit 32.

  The interstitial significance of the insulating ring spacer S36a1 is that, in addition to ensuring the interval between the copper electrode plates 34a ′, 34a, 34b ′, 34b,. In the case where the member 36a is inserted through holes provided through each pair of copper electrode plates 34a ′, 34a, 34b ′, 34b,..., These holes and the inside of the ring spacer S36a1 and a rod shape The flow between the copper electrode plates 34a ′, 34a, 34b ′, 34b,... Of the copper ion-containing electrolyte generated in the gap with the electrode plate support member 36a is prevented by ensuring water tightness with silicon rubber or the like. This is to avoid an electrical short circuit. That is, when there is a circulation of the copper ion-containing electrolyte in the gap as described above, the copper ion concentration of this electrolyte gradually increases due to a very slow flow rate or stagnation. (For example, in about two weeks, etc.) an electrical short circuit may occur, resulting in inoperability.

On the other hand, the configuration and fixing method of the other pole column 35b of the electrode group 34 and the electrode plate support member 36b in the vicinity of the upstream side of the pole column 35b are the same as described above at the position rotated 180 degrees in FIG. Configured, supported and fixed.
The electrode group 34 is connected to a DC power source (not shown) via a connector (not shown), a polarity converter or the like at the tip of the terminal rods 35a4, 35b4.
The positional relationship between the terminal rods 35a4 and 35b4 in the electrode group 34 is the opposite direction in this embodiment, but of course may be the same direction.

The electrode group 34 configured as described above is fitted into the water conduit 33 having a square or rectangular cross section in the water conduit 32 by, for example, the following method.
First, the water flow pipe 32 is manufactured by being divided into a U-shaped bowl-shaped member 32a and a lid-shaped member 32b, and the two members 32a and 32b include heads 35a2 and 35b2 of pole columns 35a and 35b, Recesses are provided at portions where nuts K35a3 and 35b3 screwed to the lower end portions, head portions 36a2 and 36b2 of the electrode plate support members 36a and 36b and nuts S36a3 and 36b3 screwed to the lower end portions are located, Supports 35a5, 35b5 having through holes are provided at corresponding positions, and further, through holes are provided at positions where the terminal rods 35a4, 35b4 are inserted.

Next, the electrode group 34 is fitted into the U-shaped bowl-shaped member 32a, and subsequently the lid-shaped member 32b is placed thereon. Further, the terminal rods 35a4 and 35b4 are supported by the supports 35a5 and 35b and both the members 32a and 32b. Further, the lower end of each is inserted into the screw holes of the heads 35a2 and 35b2 of the pole columns 35a and 35b, and the electrode group 34 is fixed in the water pipe 32. The
The flange-like member 32a and the lid-like member 32b are sealed in a watertight manner, and the flanges 37a and 37b at both ends of the water conduit 32 may be attached either before or after the electrode group 34 is fitted.
In this way, the outer edge portion of the electrode group 34 in the water flow direction F is closely attached to the wall of the water conduit 33, that is, the upper, lower, left and right of the outer edge portion of the electrode group 34 in the water flow direction F and the wall of the water conduit 33. A space is not substantially formed between the two.

Note that the electrode plate supporting method is not limited to the above-described method, and other appropriate methods may be employed. For example, the following methods may be mentioned.
1 Method using an insulating button (see Fig. 3 (a))
A method in which insulative buttons 61a and 61b (for example, made of vinyl chloride resin) having protrusions that fit into half the depth of the holes penetrating the electrode plates 34a ′ and 34a are combined and used as spacers.
2 Method using the above-mentioned 1 insulating button and insulating sheet (see FIG. 3B)
A convex portion is provided in the central portion of the back portion (opposite side of the projection) of the insulating button 62a similar to that used in the above method 1, and a concave portion is provided in the central portion of the back portion of the other insulating button 62b combined therewith. A method in which a creeping distance is increased as a spacer by interposing an insulating sheet 63 made of, for example, tetrafluoroethylene resin larger than the area of the button back portion between the two back portions.
3 Insulating button and method using this insulating button and insulating packing (see FIG. 3C).
(1) A method of using as a spacer a combination of insulating buttons 64a and 64b (for example, made of vinyl chloride resin) having convex portions that fit into concave portions that do not penetrate the electrode plates 34a 'and 34a.
(2) A method in which an insulating packing (not shown) such as a silicon rubber sheet is interposed between the insulating buttons 64a and 64b and the electrode plate of (1) above and used as a spacer.

Next, the usage example of the copper ion supply apparatus 31 of a present Example is demonstrated.
In the standing copper ion supply device 31 of this embodiment connected to a water supply source (not shown) via a water pipe, a DC power source (not shown) is connected to the terminal rods 35a4 and 35b4 via a polarity conversion device and a connector (not shown). Has been.
When DC voltage is applied with the start of water flow and the theoretical current value obtained from the water flow rate and the desired copper ion concentration is applied, copper ions from the anode by electrolysis efficiently and against the theoretical current set value It is eluted quantitatively, and water of the target copper ion concentration is stably discharged and supplied to a freshwater fish culture tank or the like.
Further, by reversing the polarity by a polarity conversion device at regular time intervals, for example, every 1 to 60 minutes, both electrodes are dissolved in average, and a high electrode utilization rate is obtained.

FIG. 4 is a cross-sectional view and a left side view showing another embodiment of the copper ion supply apparatus of the present invention.
In the present embodiment, members and locations that are substantially the same as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the copper ion supply device 41 shown in FIG. 4, when the electrode group 34 is inserted into a cylindrical water conduit 42 in which four corners of a cross section (a cross section perpendicular to the water flow direction F) square or rectangular are inscribed. , Spacers 50a, 50b made of an insulating synthetic resin (vinyl chloride resin) or the like that closes the bowl-shaped space formed by the upper, lower, left, and right of the outer edge of the electrode group 34 in the water flow direction F and the inner wall of the water pipe 42 50c and 50d are adhered and fixed to the inner wall, and the electrode group 34 is fitted into the newly formed water passage 33 having a square or rectangular cross section.

  About the method of fitting the electrode group 34 into the water conduit 33 at this time, for example, instead of the U-shaped rod-shaped member 32a and the lid-shaped member 32b, the flange-shaped spacers 50a, 50b, 50c, 50d are used. The support 35a5, 35b5 is substantially the same as described in the first embodiment except that the outer surface of the cylindrical member 32a and the lid member 32b is replaced by the outer surface of the cylindrical water conduit 42. A method or the like can be employed.

In the standing copper ion supply device 41 of this embodiment connected to a water supply source (not shown) via a water pipe, a DC power source (not shown) is connected to terminal bars 35a4 and 35b4 via a polarity conversion device and a connector (not shown). It is connected to the.
When the copper ion supply device 41 is operated in the same manner as in Example 1, copper ions are efficiently eluted from the anode by electrolysis and quantitatively with respect to the theoretical current set value. Copper ion concentration water flows out stably and is supplied to aquaculture tanks for freshwater fish. ,

  Although the present invention has been described in detail with some examples, the present invention is not limited to these examples, and various modifications can be made within the scope of the gist of the present invention.

  It is a cross section and a left side view of a copper ion supply device provided by inserting an electrode group into a cylindrical water conduit.   It is the cross section and left view which show one Example of the copper ion supply apparatus of this invention.   It is explanatory schematic sectional drawing which illustrates the support method of an electrode plate.   It is the cross section and left view which show the other Example of the copper ion supply apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Copper ion supply apparatus 2 Cylindrical water pipe 3 Water flow pipe 4 Electrode group 4a ', 4a, 4b', 4b Copper electrode plate 5a, 5b Electrode column 6a, 6b Terminal bar 7a, 7b Electrode plate support member 8a, 8b Flange 9a, 9b, 9c, 9d Cone-shaped space part 31, 41 Copper ion supply device 32, 42 Water pipe 32a Cage-like member 32b Cover-like member 33 Water-conducting pipe 34 Electrode group 34a ', 34a, 34b', 34b Copper electrode plate 35a, 35b Polar columns 35a1, 35b1 Ring spacer K
35a2, 35b2 Polar pole heads 35a3, 35b3 Nut K
35a4, 35b4 Terminal bar 35a5, 35b5 Support 35a6, 35b6 O-ring 36a, 36b Electrode plate support member 36a1, 36b1 Ring spacer S
36a2, 36b2 Head of electrode plate support member 36a3, 36b3 Nut S
37a, 37b Flange 50a, 50b, 50c, 50d Gutter-shaped spacer 61a, 61b, 62a, 62b, 64a, 64b Button 63 Sheet

Claims (2)

An apparatus for supplying copper ions into water, comprising an electrode group consisting of a plurality of pairs of equally spaced parallel copper electrode plates, and a power source for applying a DC voltage between the copper electrodes of each pair,
In the electrode group, the copper plate is parallel to the water flow direction in a water passage having a square or rectangular cross section, and the outer edge portion of the electrode group in the water flow direction is in close contact with the water pipe wall. A copper ion supply device, wherein the copper ion supply device is fitted into the device.   2. The copper ion supply device according to claim 1, wherein a polarity conversion mechanism for changing the polarity of the DC voltage to be applied is provided between the electrode group and the power source.

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