JPH053359B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water treatment device that magnetically improves and purifies the water quality of drinking water, industrial water, wastewater, agricultural water, etc.

[Conventional technology]

Even the tap water provided for drinking may be contaminated with red rust that comes from water supply equipment such as pipes and water tanks, and so-called rust that is brought in from outside. In particular, when the mixed rust is minute red rust particles, the red rust particles do not easily settle and remain suspended in the water. Water in which such red rust particles are suspended is called red water because the particles give it a red color. This red water is not suitable for drinking, and for this reason, for example, chemicals are used, mechanical means such as filtration are employed, or biological means are used.

However, with chemicals, it is difficult to put them into practical use because there are concerns about their effects on the human body, animals and plants after use, and with mechanical means, the equipment cost increases as the amount of water to be treated increases. It was rarely introduced into actual water supply facilities. Furthermore, biotechnological methods have not yet been established and there is no prospect of their adoption at this time. For this reason, recently, treatments that expose water to a magnetic field,
So-called magnetic processing is attracting attention.

An example of water treatment that performs this magnetic treatment is a water treatment device disclosed in Japanese Patent Application Laid-open No. 154188/1983. This water treatment device has a plurality of cylindrical permanent magnets having different polarities on the inner and outer circumferential surfaces of non-magnetic magnets in a cylindrical space formed by an inner jacket and an outer jacket made of non-magnetic material. The different poles are housed next to each other through a collar made of a material, and a central member made of a ferromagnetic material and having an outer diameter smaller than the inner diameter of the jacket is passed through the center of the inner jacket. An inner flow path is formed between the outer jacket and the outer jacket, and an outer tube made of a ferromagnetic material and having an inner diameter larger than the outer diameter of the outer jacket is concentrically covered with the outer jacket. An outer flow path is formed therebetween, and the treated water is configured to flow through the inner flow path and the outer flow path.

With this configuration, the magnetic flux lines emitted from the cylindrical permanent magnet can be made to cross the inner flow path and the outer flow path, and the treated water flowing in the inner and outer flow paths can be exposed to the magnetic field to the maximum extent possible. states.

Another known example is a drinking water treatment device disclosed in Japanese Patent Application Laid-Open No. 61-33290. This drinking water treatment device consists of a plurality of axially magnetized hollow disk-shaped permanent magnets arranged coaxially and in close contact with each other so that the same poles are in contact with each other in a hollow cylindrical body, and the hollow part allows drinking water to flow through. The drinking water flow path is formed in such a way that the drinking water flow path has a surface that can be covered with a non-magnetic material.

With this configuration, the magnetic fields are mutually compressed, and the magnetic flux density perpendicular to the flow can take the maximum value.As the fluid passes inside the hollow disk-shaped permanent magnet, the magnetic flux does not expand inside, and the entire area It is stated that the space has an effective magnetic flux density over a period of time, so that the fluid can be activated effectively and the reforming function can be performed without the proliferation of bacteria and other bacteria.

Furthermore, as another conventional example, there is a magnetic treatment in which treated water is passed through a flow path consisting of an annular cylinder formed between an inner tube connected to different poles of a permanent magnet and an outer tube surrounding the outer circumference of the inner tube. There is a water treatment equipment that does this. This water treatment device has an inner tube and an outer tube placed close to each other at one end of the flow path to form a gap, and generates a high magnetic flux density in the gap, which causes the treated water to become magnetic when passing through the gap. It is set to be processed.

[Problem that the invention seeks to solve]

By the way, the magnetic flux density required for water treatment is
It has been experimentally demonstrated that it varies depending on the use and purpose. In other words, magnetic treatment with a magnetic flux density of 1000 to 1500 Gauss is effective in promoting the growth of plants including fungi, and magnetic treatment with a magnetic flux density of at least 5000 Gauss or higher is effective in removing red rust and scale. It recognized.

However, in the first mentioned water treatment device, lines of magnetic flux are generated between the permanent magnet of the inner N pole and the outer S pole and the axially adjacent permanent magnet of the inner S pole and the outer N pole. The magnetic flux lines cross the entire annular cross section of the inner and outer flow channels, but because the distance between different poles becomes longer, the magnetic flux density becomes smaller.
A maximum magnetic flux density of about 2000 Gauss can only be obtained. This is because the energy product of a practical permanent magnet, such as a samarium cobalt magnet, is about 10,800 gauss at maximum, so the N pole and S
This is because there is a limit to the magnetic flux density that can be obtained with the above configuration in which the poles are far apart. Therefore, in the water treatment apparatus having the above configuration, it is considered that magnetic treatment over a long period of time is required in a closed waterway in order to remove red rust and scale.

In addition, in the case of the second drinking water treatment device, the same poles are connected so that they are in contact with each other, and a repulsive magnetic field is used, so contradictory compressed magnetic fields exist continuously, but the obtained The magnetic flux density is small.
Therefore, the effect of removing red rust and scale cannot be obtained. In addition, it is demagnetized due to the repulsive magnetic field, making it unsuitable for long-term use.

Furthermore, in the third-mentioned water treatment device, magnetic treatment is performed when the water passes through the gap, but it is instantaneous, so it is difficult to say that the magnetic treatment is sufficient. Furthermore, since the flow path area becomes smaller at the gap portion and the flow path resistance increases, there is a problem in that it is difficult to secure a desired flow rate.

This invention was made in view of the above-mentioned technical background, and its purpose is to obtain a high magnetic flux density, and to improve water quality by exposing treated water to the high magnetic flux density and performing magnetic treatment. The object of the present invention is to provide a water treatment device that can improve water quality. Another object of the present invention is to provide a water treatment device that can remove not only red rust in treated water but also scale and rust attached to the inner walls of piping. Still another object is to provide a water treatment device that can efficiently perform magnetic treatment on a large amount of treated water without reducing the flow path area.

[Means for solving problems]

In order to achieve the above object, the present invention provides a water quality improvement device that is installed in a running water path and performs magnetic treatment by introducing treated water into a magnetic field. A permanent magnet array is formed by stacking different poles facing each other at preset intervals via a spacing regulating means made of a non-magnetic material, and this permanent magnet array is housed and the permanent magnets are sandwiched from both sides. A casing to be held, a treated water flow path formed between the outer circumferential side of the permanent magnet array and the inner surface of the casing, and one end of the permanent magnet array formed by arranging the central through-hole of each permanent magnet in series. an introduction path for introducing treated water into the through-hole, and an introduction path on the other end side of the through-hole that obstructs the flow passing through the through-hole and prevents at least most of the treated water introduced into the through-hole. flow regulating means for causing the water to flow out from the spacing between adjacent permanent magnets toward the outer circumferential direction of the permanent magnets, and a drainage path for guiding the treated water that has flowed out of the permanent magnet row outside the casing after being regulated by the flow regulating means. It has a similar structure.

[Effect]

According to the above means, if the distance between the permanent magnets is set to 1 mm to 2 mm, for example, a magnetic flux density of about 6000 Gauss to 7000 Gauss can be easily obtained with a permanent magnet having an energy product of about 10800 Gauss.
The treated water is introduced into the through hole in the center of the permanent magnet array, and the flow direction of the treated water is changed by the flow regulating means, so that at least the majority of the treated water is directed toward the outer circumference of the permanent magnets along the gaps between each permanent magnet. If you let it flow out,
It becomes possible to magnetically treat treated water by exposing it to high magnetic flux density. Further, since the total opening area of the gaps between the permanent magnets becomes the flow path area, a large amount of magnetic processing can be performed without increasing the flow path resistance.

As a result, for example, the red rust particles present in the treated water are sufficiently magnetized, and while floating, they adsorb to each other and precipitate as a combined body, thereby making it possible to purify the treated water.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

1 to 3 are for explaining a water treatment device according to an embodiment, in which FIG. 1 is a partially cutaway perspective view of the water treatment device, FIG. 2 is a longitudinal section of the same, and FIG. It is an explanatory diagram showing a flow of treated water.

In FIGS. 1 and 2, water treatment equipment 10
The permanent magnet array 13 is mainly composed of a permanent magnet array 13 made of a laminate of a plurality of permanent magnets 11, and a casing 15 that houses the permanent magnet array 13.

The permanent magnet 11 is an annular disk having a through hole 17 in the center thereof, and both end surfaces thereof are magnetized to N and S poles, respectively, as shown in FIG. This permanent magnet 11 is a samarium cobalt magnet,
It is magnetized to 10800 Gauss by electric power. As shown in FIGS. 1 and 2, ten such permanent magnets 11 are stacked so that the upper through hole 17 is coaxial and different poles face each other to form a permanent magnet array 13. There is. This laminate is laminated with holders 19 made of polycarbonate, for example, fitted onto the outer periphery of each permanent magnet 11. Spacer portion 21 protruding in the direction
and a protrusion 23 which protrudes in the outer circumferential direction as treated water flow path forming means and are integrally formed into a ring shape. By changing the thickness of the spacer portion 21, the distance w between adjacent permanent magnets 11 can be freely set. In the case of this embodiment, the above-mentioned interval w is set to 1.5 mm in consideration of magnetic flux density and flow path area. This spacing is optimally 1mm to 2mm, but generally
A spacing of 0.5 mm to 5 mm is selected. Considering the magnetic flux density, it is advantageous to have a diameter of 0.5 mm or less, but the attraction force of the permanent magnet 11 becomes too strong, which not only makes assembly technically difficult, but also causes clogging due to dust, rust, etc. in the treated water. may occur and is not practical.

In this way, the permanent magnet array 13 formed by stacking the holder 19 can be handled as a unit due to mutual attraction force without any particular fixing device, but if necessary, the permanent magnet array 13 can be inserted into the protrusion 23. Holes may be drilled and fixed with bolts and nuts.

The casing 15 includes a cylindrical cover pipe 25
, a flange 27 on the treated water inlet side and a flange 29 on the treated water outlet side, both flanges 2
Threaded parts 31, 33 screwed on the outer periphery of 7, 29
Then, the threaded portions 35 and 37 threaded onto the inner periphery of the cover pipe 25 are screwed together, and the three are integrated. At this time, packing 39 is sandwiched between the end face of the cover pipe 25 and the end face of each flange, making the casing 15 watertight.

Further, in the flange 27 on the treated water introduction side, an introduction path 41 for introducing treated water from outside the casing into the casing is formed coaxially with the through hole portion 18 consisting of the through holes 17 arranged in series. In the flange 29 on the water outlet side, a discharge path 43 for guiding treated water from inside the casing into the casing is formed coaxially with the through hole portion 18 . These flanges 27 and 29 each have a path portion 42, which is made of magnetic soft iron and protrudes from the flange portion.
A connecting member 46 having a pipe thread 45 screwed thereon as required is welded to the outer circumference of the pipe 44, and is connected to a water flow path outside the water treatment device 10 via the connecting member 46.

In this embodiment, the cover pipe 25 is made of transparent polycarbonate, and its inner diameter is set to be large enough to allow the protrusion 23 of the holder 19 to be inserted therein. As a result, the permanent magnet array 13
is inserted into the casing 15, a treated water flow path 4 is formed between the inner surface of the cover pipe 25 and the outer circumference of the holder 19 other than the protrusion 23 of the holder 19.
7 is formed. Further, since the cover pipe 25 is transparent, the gap 14 between the permanent magnets 11 and the treated water flow path 47 can be visually recognized from the outside.

Furthermore, on the end face 49 of the permanent magnet array 13 on the flange 29 side on the lead-out side, a blind plate 51 as a flow regulating means made of magnetic soft iron is provided at the through-hole portion 1.
It is attached to close 8. This blind plate 51 is formed in a shape that closes only the through hole portion 18 and does not close the treated water flow path 47, and in this embodiment, the blind plate 51 is formed at a portion corresponding to the protruding portion 23 of the holder 19. extends toward the outer circumference,
The structure is such that the end face of the flange 29 on the outlet side abuts and presses down. However, for example, as described above, an insertion hole is formed at a position corresponding to the insertion hole inserted through the protrusion 23 of the holder 19, and these holders 19 are fixed to the permanent magnet array 13 through bolts and nuts. It's okay.

In addition, the flange 27 on the introduction side of the permanent magnet array 13
A through hole 53 coaxial and with the same diameter as the through hole portion 18 is provided on the side.
A disc-shaped spacer 54 made of magnetic soft iron with
is installed. Therefore, the permanent magnet array 13
is held in the casing 15 with the spacer 54 arranged on the introduction path 41 side and the blind plate 51 arranged on the output path 43 side. As a result, a flow path is formed that extends from the introduction path 41 through the through hole 53 of the spacer 54 and the through hole portion 18 to the gap 14 between each permanent magnet 11 and the treated water distribution path 47, and further continues to the outlet path 43. It turns out.

For example, as shown in FIG. 5, this water treatment device 10 has the aforementioned connecting member 46 connected to the discharge end of the water supply pipe 57 and the suction end of the drain pipe 59 of the water storage tank 55 of the building.
Connect and use by screwing together. In this example, the water treatment device 10 attached to the water supply pipe 57 side
The water treatment device 10 installed on the drain pipe 59 side is mainly used to treat rust from water mains, and the water treatment device 10 is installed in the drain pipes and water distribution pipes that lead from the water storage tank 55 to each water supply point in the building. This is for treating red rust on interior walls.

This will be explained in detail.

That is, when tap water mixed with red rust is supplied from the water main pipe to the water storage tank 55 side via the water supply pipe 57, the tap water flows through the introduction path 4 of the flange 27.
1 to the through hole portion 18 of the permanent magnet array 11. However, since this through hole portion 18 is closed by the blind plate 51 on the outlet side flange 29 side, all the introduced tap water is absorbed into each permanent magnet 11.
It flows out toward the outer circumference of the permanent magnet 11 along the gap 14 between them. At this time, as shown in FIGS. 2 and 3, since the end faces of the adjacent permanent magnets 11 are formed with different polarities, the tap water passing through the gap 14 has a concentration of at least 5,000 Gauss or more, and most of them have a Gauss of 6,000 It will be exposed to a magnetic flux density of Gauss to 7000 Gauss. In other words, the gap 14 functions as a magnetic processing path, and magnetic processing is performed in the gap 14.

Then, the magnetically treated tap water is placed under a permanent magnet 1.
The treated water reaches a flow path 47 formed between the outer circumference of the holder 19 fitted on the outer circumference of the holder 19 and the inner surface of the cover pipe 25, and flows out in the longitudinal direction along the inner surface of the cover pipe 25. The water passes outside the outer circumferential surface of the blind plate 51 and collects in the outlet path 43, and is discharged from the outlet path 43 into the water storage tank 55. The water flow inside the water treatment device 10 at this time is shown in Figures 2 and 3.
It is indicated by the symbol F in the figure.

In tap water that has been magnetically treated in this way, the red rust mixed therein is reduced to become black rust particles 61, and the magnetized black rust particles 61 aggregate in the water storage 56 and precipitate in the water storage tank 55. , extremely transparent water is supplied from the drain pipe 59 to various parts of the building. To explain in more detail, it is thought that the main component of red rust is valent iron oxide, Fe ₂ O ₃ , which is reduced to Fe ₃ O ₄ and FeO. This Fe ₃ O ₄ and FeO are both black rust and have been reduced from valence to valence. And although red rust does not contain ferromagnetic material, black rust contains quite a lot of ferromagnetic material, so when black rust is magnetized, it aggregates and precipitates, causing red water to This will reduce the occurrence. In addition,
The black rust that has coagulated and precipitated can be removed using another permanent magnet or the like, for example, during monthly building maintenance.

In addition, the water treatment device 1 attached to the drain pipe 59 side
0 further subjects the magnetically treated water in the water tank 55 to magnetic treatment, and by this magnetic treatment, it is possible to remove red rust that has formed on the inner wall of the piping from the drain pipe 59 to each water supply point. This is because the red rust on the inner wall of the pipe is reduced by the nascent hydrogen in the magnetically treated tap water, and the surface gradually becomes black rust, and this black rust peels off from the red rust and flows out. It is believed that there is.

Therefore, by installing the water treatment device 10 at the discharge end of the water supply pipe 57 and the suction end of the drain pipe 59 as described above, it is possible to not only prevent red water but also remove red rust from the pipes in the building. .

Note that FIGS. 6 and 7 show how this red rust changes into black rust and aggregates. In this example, about 7 g of red rust powder is mixed into tap water 20 to create red water, and the red water is forcibly circulated through the water treatment device 10 using a pump. Figure 6 is a micrograph showing the initial particle structure of the mixture, and the small particles that appear dotted are red rust powder with a diameter of about 1 μm. Figure 7 is a micrograph of the particle structure contained in the tap water after 3 days, showing that one aggregate has turned into black rust with a size of at least 1000 μm or more. Even after stirring, there were many precipitated crystals, and the mixture was no longer red and cloudy.

In this way, when the water treatment device 10 according to the embodiment is attached to the water storage tank 55 of a building, tap water can be subjected to magnetic treatment due to the strong magnetization effect.
It becomes possible to prevent red water and remove red rust.

Although the above embodiment describes the removal of red rust, it is also possible to remove hardly soluble scale attached to the inner wall of the piping. In this case, the poorly soluble scale is gradually reduced and transformed into soluble scale, which dissolves into tap water and is discharged.

Furthermore, in the above embodiment, ten permanent magnets 11 are stacked to form one permanent magnet array 13 to obtain a high magnetic flux density. However, when the number of stacked permanent magnets 11 is small, As shown in FIG. 4, a magnetic closed circuit is created by short-circuiting the introductory flange 27 as an N-pole piece that contacts both end faces of the permanent magnet array 13 and the blind plate 51 as an S-pole piece with a yoke 63. It is also possible to increase the magnetic flux density in the gap 14 between the permanent magnets 11 as a magnetic action path.
In FIG. 4, components that can be considered to be equivalent to those in FIGS. 1 and 2 are given the same reference numerals, and detailed explanation thereof will be omitted.

Furthermore, in both of the above embodiments, the flow regulating means is constituted by the blind plate 51, and all the introduced treated water is guided to the gap 14 between the permanent magnets 11.
Although magnetic processing is performed in the gap 14, if the magnetic flux density for magnetization may be low, a small amount of water may be guided directly from the flow regulating means to the outlet path 43 side. In this case, it is more effective to provide an outflow hole 65 as shown in FIG. 4 along the inner surface of the through hole 17 so that the treated water can be led out.

As described above, according to the above embodiment, the permanent magnet 1 has an annular disk whose both end surfaces are magnetized.
1 are stacked so that different poles face each other at a short distance through the spacer part 21 of the holder 19, so a permanent magnet 11 with an energy product of about 10,800 Gauss is used in the gap 14 as a magnetic action path. It is possible to obtain a magnetic flux density of 6000 Gauss to 7000 Gauss.As mentioned in , it is possible to obtain a magnetic flux density of 5000 Gauss or more, so a strong magnetizing effect can be exerted and the generation of red water can be easily prevented. For the same reason, red rust and scale on the inner wall of the pipe can be effectively removed, and the gap 14 between adjacent permanent magnets 11 and the number of stages (number of sheets) of permanent magnets 11 can be adjusted with respect to the area of the through hole 17. This makes it possible to equalize the flow path area and enable magnetic treatment of a large amount of treated water without increasing flow path resistance.The gap w between the permanent magnets 11 can be set freely depending on the thickness of the spacer portion of the holder 19. For example, it is suitable for growing plants.
A magnetic flux density of about 1500 Gauss can be obtained with the same configuration, and it can be applied to any field of magnetic processing.Since the cover pipe 25 is transparent, processing can be performed before the gap 14 becomes clogged. , Since it is magnetically processed while it flows out in the outer circumferential direction of the permanent magnet 11, the time of exposure to the magnetic field becomes longer and sufficient magnetization becomes possible.The spacer part 21 as a spacing regulating means and the treated water flow path forming means The protrusion 23 as
A holder 19 fitted to the outer periphery of the permanent magnet 11
Since it is integrally formed with the main body, there are various effects such as ease of assembly.

Regarding water that has been magnetically treated to date, that is, magnetically treated water, in addition to the above-mentioned effects of preventing and removing red rust and scale and promoting the growth of plants, it has the effect of settling suspended solid particles, improving the performance of concrete, It is known that liquid fuel has an effect of improving fuel efficiency, and it goes without saying that the water treatment device of the present invention has effects on all of these. In particular, since no water treatment device with a magnetic flux density of 5,000 Gauss or more has been put into practical use until now, sufficient effects can be achieved even on targets for which it was thought that the effects would be weak until now.

〔Effect of the invention〕

As is clear from the above description, the water treatment device of the present invention uses the gap between the stacked permanent magnets via the spacing regulating means as a magnetic action path, and performs magnetic treatment by flowing from the center of the permanent magnet to the outer periphery. According to the above, since the different poles of the annular permanent magnets having different end faces are opposed at a short distance, a high magnetic flux density can be obtained. Furthermore, since magnetic treatment can be sufficiently performed under high magnetic flux density, it is possible to remove not only red rust floating in the treated water, but also red rust generated on the inner wall of the piping and scale attached to the inner wall. At this time, since the flow path area is not reduced for magnetic treatment, efficient magnetic treatment of a large amount of treated water is possible.

[Brief explanation of drawings]

The figures are all for explaining this invention, and FIG. 1 is a partially cutaway perspective view of a water treatment device according to an embodiment, FIG. 2 is a vertical cross-sectional view of the same water treatment device, and FIG. 3 is an explanatory diagram showing the flow of treated water and the state of magnetized magnetic poles, FIG. 4 is a longitudinal cross-sectional view of a water treatment device according to another embodiment, and FIG. 5 is an explanatory diagram showing the state of use of the water treatment device. Figure 6 is a microscopic photograph showing the particle structure of the treated water before magnetic treatment, and Figure 7 is a microscopic photograph showing the particle structure of the precipitate in the treated water after magnetic treatment. 10...Water treatment device, 11...Permanent magnet, 13
... Permanent magnet row, 14 ... Gap, 15 ... Casing, 17 ... Through hole, 18 ... Through hole portion, 19
...Holder, 21...Spacer part, 23...Protrusion part, 25...Cover pipe, 27, 29...Flange, 41...Introduction path, 43...Output path, 4
7... Treated water distribution path, 51... Blind board.

Claims (1)

[Scope of Claims] 1. In a water treatment device that is installed in a running water path and performs magnetic treatment by introducing treated water into a magnetic field, a plurality of annular permanent magnets each having opposite polarities on both ends are arranged in a non-contact manner. A permanent magnet array formed by stacking different polarities facing each other at preset intervals via interval regulating means made of magnetic material, and a casing that houses this permanent magnet array and holds the permanent magnets by sandwiching them from both sides. , a treated water flow path formed between the outer circumferential side of the permanent magnet row and the inner surface of the casing, and a through-hole portion at one end of the permanent magnet row in which the central through-holes of each permanent magnet are arranged in series. an introduction path for introducing treated water into the through-hole, and an introduction path located at the other end of the through-hole that obstructs the flow passing through the through-hole and directs at least most of the treated water introduced into the through-hole from one end into the adjacent through-hole. a flow regulating means for causing the flow to flow from the spacing between the permanent magnets toward the outer periphery of the permanent magnets; and a drainage path for guiding the treated water that has been regulated by the flow regulating means and flowed out of the permanent magnet array to the outside of the casing. A water treatment device characterized by: 2. The water treatment device according to claim 1, wherein the permanent magnet is formed of a plate-shaped torus. 3 In claim 1, the distance between each permanent magnet set in advance through the distance regulating means is 1 mm.
A water treatment device characterized by having a diameter of 5 mm to 5 mm. 4. The water treatment device according to claim 1, wherein each of the permanent magnets constituting the permanent magnet array is independent. 5. The water treatment device according to claim 1, wherein the outer magnetic poles of the permanent magnets located at both ends of the permanent magnet array are short-circuited by a magnetic material. 6. The water treatment according to claim 1, characterized in that the flow regulating means is constituted by a blind plate that completely prevents the treated water introduced into the through-hole from passing through the through-hole. Device. 7. The water treatment device according to claim 1, wherein the flow regulating means includes an outflow hole that allows some of the treated water to flow out along the inner edge of the through-hole portion. 8. The water treatment device according to claim 1, wherein at least a portion of the casing is transparent. 9. The water treatment device according to claim 1, wherein the lead-out path is arranged in a direction substantially perpendicular to the end face between the permanent magnets. 10. The water treatment device according to claim 1, wherein the magnetic flux density between adjacent permanent magnets is at least 5000 Gauss or more. 11. The water treatment according to claim 1, characterized in that the interval regulating means is formed integrally with a holder that holds each permanent magnet with a flow path secured between it and the inner surface of the casing. Device.