JPH091133A - Water treatment device and wire lectrodischarge machine incorporating this water treatment device - Google Patents

Abstract

PURPOSE: To improve water quality so as to have antioxidation power and sterilization power, etc. CONSTITUTION: In a cylindrical body 1 with a required length, having an inflow port 1a of water at one end and an outflow port at the other end, packed layers 2A, 4A with particulates 2a consisting of far-infrared ray irradiation ceramics and particulates 4a consisting of ceramics treated the surface with divalent and trivalent iron salts, respective are provided. Also a permanent magnet 3 is arranged in the cylindrical body 1 and the both ends of the cylindrical body 1 are sealed with caps having water passing property.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment device for imparting antioxidative power and bacterial growth inhibitory power to general water, and suppressing the generation of odor and rust of a working fluid which incorporates the water treatment device and circulates. The present invention relates to a wire electric discharge machine that facilitates maintenance.

[0002]

2. Description of the Related Art Generally, divalent and trivalent iron salts include, for example, Fe ₂ Cl ₅ .XH ₂ O and Fe ₃ Cl ₇ .X.
Although there are H ₂ O and Fe ₃ Cl ₈ · XH ₂ O, etc., it has recently been confirmed that these divalent and trivalent iron salts have extremely useful actions such as antioxidant action and ionization inhibiting action. There is. It is also known that strong magnetic force reduces nutrients in water that cause bacterial growth.

By the way, in the conventional wire electric discharge machine, after water in the tank is supplied into the machining tank by a pump through a filter and an ion exchange resin, and the electric discharge machining of the workpiece is carried out in the machining tank. The water is circulated into the tank and supplied again to the processing tank as described above. Moreover, the circulating water removes chlorine, iron, magnesium, calcium, phosphorus, and other substances dissolved by the ion-exchange resin so as to have pure and insulating properties.

[0004]

However, high temperature,
When it is humid or after a holiday, the water in the processing tank or tank will rot and give off a bad odor, or if the work piece is left in the water for several hours to several days, the Rust was generated up to the table on which the work piece was placed. Therefore, it takes a lot of time and labor for maintenance such as water replacement and rust removal, and further, there is a fatal problem such as a decrease in accuracy of the work piece. Therefore, in order to solve these problems as much as possible, the non-resistance value of the ion exchange resin was increased or the filter was replaced earlier, but there was a problem that the cost was economically high.

The present invention has been made to solve the above problems, and has an antioxidative effect on a divalent and trivalent iron salt and a divalent and trivalent iron salt compound comprising a divalent and trivalent iron salt and an alkali metal salt. It has an ionization-suppressing action, and the water containing them has a smaller bond structure of water molecules than ordinary water, and the magnetic force reduces nutrients in the water that cause bacterial growth. A water treatment apparatus having a granular material made of ceramics surface-treated with a valent iron salt or divalent and trivalent iron salt mixture, a granular material made of far-infrared radiation ceramics, and a permanent magnet, and a water treatment apparatus incorporating the same. It is an object of the present invention to provide a wire electric discharge machine that facilitates maintenance and enhances the economical effect.

[0006]

A water treatment apparatus has a cylindrical body having a required length, one end of which is a water inlet and the other end of which is a water outlet, and a granular material made of far-infrared emitting ceramics and a divalent metal. A structure is provided in which a packing layer of granular material made of ceramics surface-treated with a trivalent iron salt is provided, and permanent magnets are arranged in the cylindrical body, and both ends of the cylindrical body are sealed with a water-permeable lid. .

Alternatively, a granular material made of far-infrared emitting ceramics, a divalent and trivalent iron salt and an alkali metal salt are provided in a cylinder having a required length with one end serving as a water inlet and the other end serving as a water outlet. A lid having a water-permeable material provided on both ends of the cylindrical body, each of which is provided with a packed layer of a granular material made of ceramics which is surface-treated with a divalent and trivalent iron salt compound consisting of It has a structure sealed with.

The wire electric discharge machine is provided with a tank for storing a machining fluid, a machining vessel for performing electric discharge machining, and a machining fluid in the tank for supplying the machining fluid into the machining vessel by a pump through a filter and an ion exchange resin. In a wire electric discharge machine comprising an outflow pipe and a return pipe for returning the processing liquid in the processing tank to the inside of the tank, the water treatment of any one of the above in the forward flow pipe or the return pipe at a desired position. The device is arranged.

[0009]

The water that has passed through the water treatment device has a smaller bond structure of water molecules, and is subjected to an antioxidant action, an ionization inhibiting action, a magnetic action and the like. Therefore, in the wire electric discharge machine incorporating this water treatment device, the above-described various actions are performed to prevent the deterioration of water as a machining fluid and the generation of bad odor, and the generation of rust on the workpiece and the table. It is held down. Moreover, the life of the filter and the ion-exchange resin is kept significantly longer.

[0010]

Embodiment 1 An embodiment of a water treatment apparatus according to the present invention and a wire electric discharge machine incorporating the water treatment apparatus will be described below with reference to the drawings. FIG. 1 is a perspective view of the water treatment device, and FIG. 2 is a sectional view of the same. In the figure, 1 is a water inlet 1 at one end
a, a cylindrical body having a required diameter and length with the other end serving as a water outlet 1b, and a granular material made of far-infrared emitting ceramics in the longitudinal center part of the cylindrical body 1. 2a
The filling layer 2A is provided, and the permanent magnet 3 is embedded in the center thereof.

Then, on both the left and right sides of the filling layer 2A of the granular material 2a made of the far infrared radiation ceramics,
A packing layer 4A, 4A of granular material 4a made of ceramics surface-treated with divalent and trivalent iron salt is provided, and a lid made of wire mesh is provided at both ends in the longitudinal direction of the cylindrical body 1 so that the ceramic granular material 4a does not spill out. It is sealed with the bodies 5 and 5. Further, threaded portions 6 and 6 are engraved on the outer peripheries of both ends of the tubular body 1 in the longitudinal direction, and connection pipes 7 and 7 are screwed to the threaded portions 6 and 6 to be connected. Flange 8, 8 is provided around outer ends of these connecting pipes 7, 7, and cap nuts 9, 9 are attached to the flanges 8, 8 to form a unitized water treatment device T. The filling layers 2A, 4A, 4A are formed with some margins.

The granular material 2a made of the far-infrared emitting ceramics is formed by mixing natural ore, natural zeolite and the like in a powder form, mixing them into spherical particles of appropriate size, and sintering these spherical particles. Examples of natural ores include alumina, β-spodumene, zircon, silicon, iron,
Those containing mineral substances such as titanium, calcium, sodium and potassium are effective. Further, the granular material 4a made of ceramics which is surface-treated with divalent and trivalent iron salt is similarly formed. Examples of divalent and trivalent iron salts include Fe ₂ C
l ₅ · XH ₂ O is used, but Fe ₃ Cl ₇ · XH ₂ O is also used
Alternatively, it may be Fe ₃ Cl ₈ .XH ₂ O. This Fe ₂
Cl ₅ .XH ₂ O is prepared by dissolving ferrous sulfate in a hydrochloric acid aqueous solution and then concentrating the resulting crystals to dissolve in an isopropanol-water mixture, and filtering the solution, or concentrating ferric chloride with caustic soda. Crystals obtained by dissolving in an aqueous solution, neutralizing with hydrochloric acid, and concentrating are dissolved in an isopropanol-water mixed solution, and the solution is filtered and then concentrated.

For example, 1 g of ferrous sulfate FeSO ₄ .6
H ₂ O is put into 5 ml of 12N HCl, and after stirring, insoluble components are filtered with a filter paper (No. 5C). After adding 0.1 g of sodium chloride (special grade) to the solution portion, the solution is concentrated under reduced pressure. Next, 10 ml of methyl alcohol is added and the extracted portions are collected and dried in a desiccator. Fe ₂ Cl ₅ .XH ₂ O is obtained in finely crystalline form by washing the dry substance with a little pyridine and then putting it in 10 ml of ethyl alcohol.
Therefore, the fine crystals of Fe ₂ Cl ₅ .XH ₂ O are dissolved in 1 liter of distilled water, and this is diluted to obtain a stock solution. And
A granular material 4a made of ceramics, which has been surface-treated with a divalent and trivalent iron salt, is obtained by immersing the powdery material made of the ceramics in this stock solution for about one day, taking it out and drying it.

In the case of a divalent and trivalent iron salt compound, for example, Fe
Fine crystals of ₂ Cl ₅ .XH ₂ O are dissolved in 1 liter of water, 10 g of ferric chloride FeCl ₃ .6H ₂ O is added thereto, and this is diluted 1000 times to prepare a stock solution. Next, the undiluted solution 500
To a solution prepared by adding 0.5 ml of concentrated hydrochloric acid to ml, 200 g of aluminum powder was added, and the mixture was left standing for 24 hours after stirring. Next, this treated powder is put into 500 ml of a treated stock solution to which 0.5 g of caustic soda and 0.5 g of glucose are added, and the mixture is left to stand for 24 hours after stirring. Next, this treated powder is placed in 500 ml of a treated stock solution to which 0.5 g of caustic soda and 0.5 g of glucose are added, and the mixture is stirred and allowed to stand for 24 hours. After standing, the powder is dried by heating to obtain an aluminum complex.

On the other hand, treated seawater prepared by adding 5 g of the aluminum complex and 10 g of glucose to 10 l of natural seawater and allowing it to stand still for 5 days or more was filtered with No. 5C paper, and 2 l thereof
Is placed in a enamel container, 500 g of sodium chloride is added, and the mixture is heated to 50 ° C. and completely dissolved. In addition to the above Fe
₁ mg of ₂ Cl ₅ .XH ₂ O is added. This solution is evaporated by heating and concentrated to a liquid volume of 200 ml, and crystals of sodium chloride which are ejected during this period are collected. Then, the concentrated liquid 20 finally obtained by removing the sodium chloride crystals
0 ml was further concentrated on the water bath until the liquid amount became 20 ml, the precipitated crystals were separated by filtration, and the filtrate was collected, and magnesium chloride MgCl ₂ .6H ₂ O was added to it until saturation was reached. A saturated solution of the magnesium chloride complex, which is a salt formulation, is obtained.

Then, this magnesium chloride complex is diluted with distilled water to prepare a 10 ⁸ -fold dilution of the stock solution, which is further diluted 100-fold with natural seawater to prepare the stock solution. Finally,
Diluting the stock solution by 1000 times with distilled water, immersing the ceramics in the solution for 24 hours, taking out and drying, to obtain granules of the ceramics surface-treated with the divalent and trivalent iron salt mixture. Become. In this way, by blending the divalent and trivalent iron salt with the alkali metal salt, the unique action of the divalent and trivalent iron salt can be further promoted. As the permanent magnet 3, an alnico magnet having a coercive force of 500 G is used. Alternatively, a ferrite magnet, a rare earth magnet, or the like may be used.

The water treatment apparatus T of the present invention has the above-mentioned structure. When water is passed from the inflow port 1a to the outflow port 1b, first, Fe ₂ Cl ₅ .XH ₂ O reduces the bond structure of water molecules, and Oxidation and ionization are suppressed.
Further, the far infrared rays are naturally irradiated into the water from the granular material 2a made of the far infrared radiating ceramics to promote the respective suppressing forces. Further, the magnetic force emitted from the permanent magnet 3 reduces nutrients in water that cause bacteria to grow, and suppresses the growth of bacteria. In this way, the three parties work together to improve water quality.

[0018]

[Embodiment 2] Next, a case where the water treatment device T is incorporated in a wire electric discharge machine will be described. FIG. 3 shows a schematic configuration diagram of the wire electric discharge machine. In the figure, 10 is a machining tank for performing electric discharge machining, into which insulating water as a machining liquid is supplied. A processing head 11 is faced from above in the processing tank 10, and a table 12 for supporting a workpiece is disposed at the bottom. The water W used in the processing tank 10 is sent to the tank 14 via the reflux pipe 13 to separate and precipitate the chips generated during the processing. The water W from which the chips have been separated is pumped up by the pump 15, then filtered by the filter 16, and the ions such as chlorine, iron, magnesium, etc. eluted in the water are removed by the ion exchange resin 17, and the outflow pipe 18 Through processing tank 10
Supplied to In this way, water is circulated.

Therefore, in FIG. 3, the water treatment device T is arranged in the outflow pipe 18 between the filter 16 and the ion exchange resin 17, and is connected to the outflow pipe 18 via the cap nuts 9, 9. By providing the water treatment device T in this way, the water W is first passed through the water treatment device T in the process of Fe ₂ Cl ₅
The granular material 2a made of ceramics which has been surface-treated with XH ₂ O receives an antioxidant effect and an ionization suppressing effect, and at the same time, the magnetic force emitted from the permanent magnet 3 reduces the nutrients in the water which cause bacterial growth. As a result, the deterioration of water as the working liquid and the generation of bad odor are suppressed, and further the generation of rust on the workpiece and the surface of the table 12 is suppressed.

Further, since the bond structure of water molecules is smaller than in the usual case, noble metals are also extruded by the change of hydrated ions and almost filtered by the filter. on the other hand,
Water can pass through the filter because of its small molecular bond structure. Therefore, the life of the filter is long-lived, and the frequency with which the ion exchange resin works is reduced accordingly, and the life is also long-lived. The service life of the water treatment device T is usually 2 years or 5000 hours.

Here, with respect to the ion exchange resin and the filter, actual data of the difference in service life between the conventional wire electric discharge machine and the wire electric discharge machine using the present water treatment apparatus are shown in FIGS. 4 and 5. FIG. 4 shows that the initial non-resistance value is set to 100,000 Ω with 5 liters of ion exchange resin and the non-resistance value decreases with time. Here, the work piece is SK
Steel, SC steel, and stainless steel were used. Generally, the non-resistance value is limited to 30,000 Ω, and in the conventional case A is 1
When the water treatment device is used, it reaches at 00H B
Then it has reached 300H. From this, it can be seen that the purity of water is kept longer in the case of using the water treatment device B than in the case of the conventional case.

Further, FIG. 5 shows that the water pressure required for filtration rises with time. Generally, the limit that can be filtered is 2.5 atm, and in the case of A in the past, it is 200
Whereas H is reached, in the case of using this water treatment device, B is reached at 300H. From this, it can be seen that when the water treatment device of the present invention is used, the clogging of the filter is slower in the case of using the present water treatment device, that is, it lasts longer.

[0023]

As described above, the water treatment apparatus according to the present invention comprises the granular material made of far infrared radiation ceramics and the ceramic surface-treated with divalent and trivalent iron salt or divalent and trivalent iron salt compound. Since it has a structure in which the granular material and the permanent magnet are internally provided, the water that has passed through the water treatment device is subjected to an antioxidant action, an ionization inhibiting action, and a magnetic action.

In the wire electric discharge machine incorporating the water treatment device, it is possible to suppress the decomposition of water, the generation of bad odor, and the generation of rust, as well as the life of the filter and the ion exchange resin. Can be held for a long time and the processing tank does not become dirty so cleaning can be reduced, which simplifies maintenance. Therefore, economical cost reduction can be achieved. Furthermore, it has many beneficial effects, such as improving the accuracy of the workpiece without impairing the health of the worker. Furthermore, the water treatment device according to the present invention is not limited to a wire electric discharge machine, and in combination with being compactly unitized, it can be widely used for many applications in which a working fluid such as water is used.

[Brief description of the drawings]

FIG. 1 is a perspective view of a water treatment device according to the present invention.

FIG. 2 is a sectional view of FIG.

FIG. 3 is a schematic configuration diagram of a wire electric discharge machine incorporating the water treatment device shown in FIG.

FIG. 4 is a diagram showing actual data of service life of ion exchange resins.

FIG. 5 is a diagram showing actual data of filter service life.

[Explanation of symbols]

1 Cylinder 1a Inlet 1b Outlet 2a Granular material made of far-infrared emitting ceramics 2A Packing layer made of far-infrared emitting ceramics 3 Permanent magnet 4a Granular material made of ceramics surface-treated with divalent and trivalent iron ions 4A Granular packing layer of ceramics surface-treated with divalent and trivalent iron ions 5,5 Lid

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[Procedure amendment]

[Submission date] October 30, 1995

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Added

[Correction contents]

[Figure 5]

Claims (3)

[Claims] 1. A cylindrical body having a required length, one end of which is a water inlet and the other end of which is a water outlet, which is surface-treated with a granular material made of far-infrared emitting ceramics and a divalent and trivalent iron salt. A water treatment apparatus characterized in that a packing layer of granular material made of ceramics is provided, permanent magnets are arranged in the cylinder, and both ends of the cylinder are sealed with water-permeable lids. 2. A granular material made of far-infrared radiation ceramics, a divalent and trivalent iron salt and an alkali metal salt in a cylinder having a required length, one end of which serves as a water inlet and the other end of which serves as a water outlet. A lid having a water-permeable material provided on both ends of the cylindrical body, each of which is provided with a packed layer of a granular material made of ceramics which is surface-treated with a divalent and trivalent iron salt compound consisting of A water treatment device characterized by being sealed with. 3. A tank for storing the working liquid, a working tank for performing electric discharge machining, and a forward flow pipe for supplying the working liquid in the tank into the working tank by a pump via a filter and an ion exchange resin. 3. A wire electric discharge machine comprising a reflux pipe for returning the machining fluid after machining in a machining tank into the tank, wherein the water according to claim 1 or 2 is located at a desired position of the forward flow pipe or the reflux pipe. A wire electric discharge machine comprising a processing device.