JP2003047967A - Magnetic water treater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an improved treatment efficiency and the avoidance of poor water flowability in a magnetic water treater. SOLUTION: A plurality of hexagonal inner cylinders 20 are fitted into a cylindrical casing 10 through which the water to be treated flows to form a honeycomb in which each inner cylinder 20 is surrounded with a clearance 40. A row of magnets 30 is encased within each inner cylinder 20. The row of the magnets 30 is composed by laying a plurality of permanent magnets 31, 31, etc., magnetized in the direction rectangular to the direction of the flow of water in a manner that the directions of their magnetization vary about the center of each inner cylinder 20. The permanent magnets 31, 31, etc., of each row of magnets are arranged on the same level in a lateral direction rectangular to the direction of the flow of water, and those permanent magnets 31, 31, etc., which are situated on the same level have the same magnetization direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic water treatment device used as a measure against red rust on steel pipes.

[0002]

2. Description of the Related Art Conventionally, water is passed through a permanent magnet between a north pole and a south pole at a predetermined speed, so-called magnetic treatment of water makes it difficult for scale to adhere to a pipe, or the scale that adheres is gradually removed. It has been reported to be effective.

That is, various steel pipes laid in condominiums and the like cause red rust on the inner surface with use, and the red rust dissolves in water and causes red water. As a result, it is necessary to update the piping, but it is well known that the cost is huge. So, instead of updating the piping,
It is considered to install a magnetic water treatment device in the middle of piping.

A conventional general magnetic water treatment apparatus is one in which a large number of bar-shaped magnets are inserted in a water flow direction in a cylindrical casing with a gap therebetween. If this treatment device is installed in the middle of a pipe that has red rust, the water flowing in the pipe is activated by magnetic treatment, and red rust changes to magnetite called black rust. Magnetite is a stable passive body, and when red rust changes to this magnetite, red water stops and corrosion of the piping thereafter stops. In this way, the piping can be regenerated economically.

An important point for increasing the treatment efficiency in such magnetic treatment of water is to pass the water through the magnetic force lines many times, that is, to irradiate the water with magnetic force lines many times in a pulsed manner, and It is supposed that the water is applied to the water at a right angle, and a relatively recent development from this viewpoint is Japanese Patent No. 2909891.
It is a magnetic water treatment device described in Japanese Patent Publication No. It should be noted that by irradiating the magnetic field lines in a pulsed manner, the time required for the water to reach the saturation activity is significantly shortened, and the decrease in the activity of the water reaching the saturation activity is effectively suppressed. , `` Journal of Colloid and Interface Science 20
9, 374-379 (1999) ”.

The magnetic water treatment apparatus described in Japanese Patent No. 2909891 includes a tubular casing through which water to be treated flows and a plurality of laminated columns that are installed in parallel in the tubular casing. Each laminated column has a structure in which a large number of magnets are laminated with a magnetic metal plate sandwiched in the water flow direction so that the same poles face each other. Is arranged in the casing.

[0007]

In the magnetic water treatment apparatus having such a structure, the magnetic metal plates adjacent to each other in the lateral direction are magnetized to have different polarities, and the water to be treated circulates between them, whereby the treated water is treated. Magnetic field lines in the direction perpendicular to water repeatedly act on water. As a result, compared with the conventional device in which many rod-shaped magnets are inserted in the water flow direction with a gap in the tubular casing,
The processing efficiency will be improved.

However, in each laminated pillar, although the magnetic metal plate is interposed between the magnets, a large number of magnets laminated in the water-passing direction are magnetized in the laminating direction, that is, the water-passing direction. That is, the direction of the magnetic field acting on water is different from the magnetization direction of the magnet. Therefore, the magnetic field density acting on water is relatively reduced as compared with the magnetic energy of the magnet, and in this respect, the reduction of treatment efficiency is unavoidable.

In addition, the magnetic metal plate interposed between the magnets is
Since it is a flat plate that is perpendicular to the flow of the water to be treated, it forms a turbulent flow in the water to be treated and causes stagnation. Moreover, since the edge surface having a small area serves as a magnetic pole surface that sandwiches the water to be treated from both sides, it is difficult to make the magnetic pole surface large. These points also cause a decrease in processing efficiency. Further, it increases water resistance in the tubular casing, which causes water permeability to decrease.

An object of the present invention is to provide a magnetic water treatment apparatus having high magnetic treatment efficiency and excellent water permeability.

[0011]

In order to achieve the above-mentioned object, a magnetic water treatment apparatus according to the present invention has a cylindrical casing through which water to be treated flows and gaps at a plurality of cross-section positions in the cylindrical casing. A plurality of magnets that are inserted in the water flow direction with a gap between them and are laminated in the water flow direction by changing the magnetization direction within the transverse section and magnetizing a plurality of permanent magnets magnetized in a direction substantially perpendicular to the water flow direction. And columns.

In the magnetic water treatment apparatus according to the present invention, the plurality of permanent magnets forming each magnet row are magnetized in a direction substantially perpendicular to the water flow direction, and the magnetization directions are sequentially set within the cross section. Have changed. Therefore, as the water to be treated circulates between the plurality of magnet examples, the water to be treated repeatedly passes between the permanent magnets, and the magnetic field in the direction perpendicular to the circulation direction is repeatedly received in pulses.

Since the permanent magnets in the magnet array are magnetized in the direction substantially perpendicular to the water flow direction as described above, a strong perpendicular magnetic field can be generated without interposing a magnetic metal plate between the magnets. It is possible to act on the water to be treated and it is easy to enlarge the magnetic pole surface. By omitting the magnetic metal plate, excellent water permeation is ensured and stagnation due to turbulence is prevented.

In order to increase the efficiency of the action of the magnetic field on the water to be treated, it is preferable that the permanent magnets of each magnet row be positioned at the same level in the lateral direction perpendicular to the water flow direction. It is further preferable that the permanent magnets of the magnet array have substantially parallel magnetization directions. When the magnetizing directions of the permanent magnets arranged at the same level are made substantially parallel, the opposing pole faces of the permanent magnets adjacent in the magnetizing direction do not necessarily have to have different polarities, and may have the same polarities.

Further, in order to facilitate holding of the permanent magnets of each magnet row, to reduce water flow resistance, and to prevent turbulence, the permanent magnets of each magnet row correspond to the changing angle of the magnetization direction. Insertion into the polygonal inner cylinder is preferred.

A hexagonal cylinder is rational as the inner cylinder, and in that case, the permanent magnets of each magnet array have a magnetization direction of 120.
It is preferable to insert it into the inner cylinder by changing it every time. Also,
The hexagonal cylinder is preferably inserted in a honeycomb shape with a predetermined gap in the cylindrical casing from the viewpoint of magnetic efficiency and the like.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a magnetic water treatment apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view schematically showing an arrangement form of magnets in a magnet example, and FIG. 3 is a positional relationship of magnets in each stage. It is a cross-sectional view which shows typically.

As shown in FIG. 1, the magnetic water treatment apparatus according to this embodiment has a tubular casing 10 made of a tubular body having a circular cross section, and a plurality of tubular casings 10 inserted in parallel in the tubular casing 10. .. and a magnet array 30 housed in each inner cylinder 20.

The tubular casing 10 is a circular pipe having a diameter larger than that of steel pipes laid in, for example, buildings and condominiums,
It is inserted in the middle of the steel pipe. Tubular casing 10
Both ends of the are closed by end plates having a small-diameter pipe used for connection with the steel pipe in the center. As the constituent material of the tubular casing 10, a non-magnetic metal having excellent corrosion resistance such as SUS304 and SUS316 is used, like the inner cylinders 20, 20 ...

Each of the plurality of inner cylinders 20, 20, ... Is a regular hexagonal square tube, and a predetermined gap 40 is formed between adjacent inner cylinders 20, 20 in the same direction in the cylindrical casing 10. They are arranged in a honeycomb shape. Both ends of each inner cylinder 20 are closed by an end plate (not shown), and are similarly supported by a support member (not shown) on a portion other than both ends of the tubular casing 10 so that the water to be treated flows through the gap 40. Has been done.

The magnet array 30 housed in the inner cylinder 20 is a rectangular parallelepiped magnetized in the lateral direction perpendicular to the water flow direction in the cylindrical casing 10 (the central axis direction of the cylindrical casing 10 and the inner cylinder 20). Of a large number of permanent magnets 31. The plurality of permanent magnets 31 are laminated in the axial direction within the inner cylinder 20 by sequentially displacing the respective magnetization directions by 120 degrees within the cross section of the inner cylinder 20. Also, a plurality of inner cylinders 20, 20, ...
, The corresponding permanent magnets 31, 31, ...
Are located at the same level, and permanent magnets 3 at the same level
The magnetization directions of 1, 31, ... Are parallel and are the same here.

Referring to FIGS. 2 and 3, the inner cylinders 20, 20
The direction of the permanent magnets 31, 31 of each stage in.
When the magnetization direction of .. is set to FIG. 3C, the magnetization directions of the permanent magnets 31, 31 ... of the N + 1th stage are as shown in FIG. Counterclockwise 12
It is displaced by 0 degrees, and the permanent magnets 31, 31,
As shown in FIG. 3 (a), the magnetization directions of all are displaced 120 ° counterclockwise with respect to FIG. 3 (b).
Then, at the (N + 3) th stage, it is further displaced counterclockwise by 120 degrees from FIG. 3A and returns to FIG. 3C. As a result, in any step, the facing surfaces of the permanent magnets 31, 31 that are adjacent to each other in the magnetization direction are magnetic pole surfaces having different poles.

Each permanent magnet 31 has a laminated structure in which a plurality of thin plate magnets divided in the magnetization direction are attracted in the plate thickness direction.

Next, the function of the magnetic water treatment apparatus according to this embodiment will be described.

In the magnetic water treatment apparatus according to this embodiment, the water to be treated flows in the cylindrical casing 10 in the central axis direction. More specifically, the gas flows through the annular gap 40 formed between each of the plurality of inner cylinders 20, 20, ... Arranged in the cylindrical casing 10. For the clearance formed between the inner cylinders 20, 20 ... And the cylindrical casing 10 on the outside thereof, that is, the outermost clearance, measures such as provision of padding are taken so that the water to be treated does not flow. ing.

Attention is now paid to the water to be treated flowing through the positions indicated by X, Y and Z in FIGS. 3 (a) to 3 (c). X, Y, Z
3 positions are annular gaps 4 formed around the inner cylinder 20.
0, which corresponds to the magnetization direction of the permanent magnets 31, 31, 31 forming the magnet array 30 in the inner cylinder 20. The flow direction of the treated water is from top to bottom, that is, N + 2nd stage, N + 1th stage,
The order of the Nth stage.

In the (N + 2) th stage shown in FIG. 3A, the X position is the S pole and the S pole of the permanent magnets 31, 31 adjacent to each other in the magnetization direction.
It is sandwiched between the poles and the water to be treated passes through it, thereby passing through a magnetic field perpendicular to the water flow direction. In the (N + 1) th stage shown in FIG. 3B, the Y position is sandwiched between the N and S poles of the permanent magnets 31, 31 adjacent to each other in the magnetization direction, and the water to be treated passes therethrough. It passes through a magnetic field perpendicular to the water direction. In the Nth stage shown in FIG. 3C, the Z position is
It is sandwiched between the N poles and S poles of the permanent magnets 31, 31 adjacent to each other in the magnetization direction, and the water to be treated passes therethrough, thereby passing through a magnetic field perpendicular to the water passage direction. At the (N-1) th stage, the state shown in FIG. 3A is again established, and the water to be treated passing through the X position passes through the magnetic field perpendicular to the water passing direction.

As can be seen from the above, in the magnetic water treatment apparatus according to the present embodiment, the water to be treated flowing in the cylindrical casing 10 in the direction of the central axis is the permanent magnets 31, 31.・ Passes through the magnetic field perpendicular to the water flow direction once every three steps. Permanent magnet 3 in each inner cylinder 20
If the number of 1, 1, ... Is 30, the water to be treated passes through the magnetic field perpendicular to the water flow direction 10 times while passing through the tubular casing 10.

Thus, the magnetic field perpendicular to the water flow direction acts on the water to be treated in a pulsed manner. Moreover, the permanent magnets 31, 31 that apply each pulse are magnetized in the direction perpendicular to the water flow direction. That is, the direction of the magnetic field acting on the water to be treated and the magnetization directions of the permanent magnets 31, 31 are parallel, and are the same here. Therefore, the magnetic energy of the permanent magnets 31, 31 efficiently contributes to the formation of the magnetic field that acts on the water to be treated, and the energy of each pulse becomes stronger than the magnetic energy of the permanent magnets 31, 31.

In addition, the magnetic pole surfaces of the permanent magnets 31, 31 that sandwich the water to be treated from both sides are wide. In the conventional device described in Japanese Patent No. 2909891, since the water to be treated passes between the magnetic metal plates on both sides, the edge surface parallel to the water flow direction of the magnetic metal plate becomes the magnetic pole surface, and its height is small, Cannot secure a large area. The magnetic flux density can be increased by stacking the magnets in the water flow direction, but the energy product cannot be increased because the magnetic pole surface is narrow. On the other hand, in the present embodiment, the permanent magnet 31 is composed of a plurality of thin plate-shaped magnets divided in the magnetization direction, the magnetic flux density can be increased by stacking the magnets, and the permanent magnet 31 sandwiches the water to be treated from both sides. , 3
The magnetic pole face of 1 is wide. Therefore, the energy product becomes very large even when the magnetic flux density is the same, and the energy of each pulse is also enhanced from this point.

Furthermore, the water to be treated flows straight through the gap 40. Therefore, the water permeability is good, and the generation of turbulence is prevented.

Therefore, although the magnetic metal plate is not interposed between the permanent magnets, a higher processing efficiency can be obtained than that of the conventional apparatus in which the magnetic metal plate is interposed. Further, by not interposing a magnetic metal plate between the permanent magnets, excellent water permeability can be secured at the same time.

In the above embodiment, the large number of permanent magnets 31, 31, ... Constituting the magnet array 30 are displaced by 120 degrees in the hexagonal inner cylinder 20, but they may be displaced by 60 degrees. In that case, the water to be treated passes through the magnetic field perpendicular to the water flow direction once every three stages of the permanent magnets 31, 31 ... In the inner cylinder 20. Similarly, a large number of permanent magnets 31, 31, ... Constituting the magnet array 30 may be displaced within the quadrangular inner cylinder 20 by 180 degrees or by 90 degrees. 1
The magnetic field perpendicular to the water flow direction acts like a pulse once every two steps when displaced by 80 degrees and once every four steps when displaced by 90 degrees. Further, it can be displaced within the polygonal inner cylinder 20 of octagon or more.

Of these, the above-mentioned embodiment, that is, the form in which the permanent magnets 31, 31, ... Are displaced by 120 degrees in the hexagonal inner cylinder 20, is the most rational. This is because the hexagonal inner cylinder 20 can be easily assembled in the cylindrical casing 10, the gap 40 can be easily formed, and the low-efficiency outermost gap can be reduced. Further, when the permanent magnets 3 that are adjacent to each other in the arrangement direction within the inner cylinder 20 are displaced by 120 degrees.
The repulsive force generated between the first magnet 31 and the second magnet 31 is reduced, and the attractive force is generated rather.
It becomes easy to combine 1,31 ...

[0035]

As described above, the magnetic water treatment apparatus according to the present invention has a tubular casing through which the water to be treated flows, and a water passage direction in which a plurality of transverse cross-sections are provided in the tubular casing with gaps. A plurality of permanent magnets that are inserted in the magnet and are magnetized in a direction substantially perpendicular to the water flow direction, and are laminated in the water flow direction by changing the magnetization direction within the cross section. Thus, the high-efficiency magnetic field in the direction perpendicular to the flow direction can be repeatedly applied to the water to be treated in a pulsed manner without using a magnetic metal plate, so that the treatment efficiency is high and the water permeability is also excellent.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a magnetic water treatment device according to an embodiment of the present invention.

FIG. 2 is a perspective view schematically showing an arrangement form of magnets in a magnet example.

FIG. 3 is a cross-sectional view schematically showing the positional relationship of magnets in each stage.

[Explanation of symbols] 10 Cylindrical casing 20 inner cylinder 30 magnet rows 31 Permanent magnet 40 gap

Claims (7)

[Claims] 1. A tubular casing through which water to be treated flows,
A plurality of permanent magnets, which are inserted in the water-passing direction with a gap at a plurality of positions in the horizontal cross-section in the tubular casing and magnetized in a direction substantially perpendicular to the water-passing direction, change the magnetization direction in the horizontal cross-section to pass water. 1. A magnetic water treatment apparatus, comprising: a plurality of magnet rows that are stacked in a direction. 2. The magnetic water treatment apparatus according to claim 1, wherein the permanent magnets of each magnet row are located at the same level in the lateral direction perpendicular to the water flow direction. 3. The magnetic water treatment apparatus according to claim 2, wherein the magnetizing directions of the permanent magnets of the magnet rows arranged at the same level are substantially parallel to each other. 4. The magnetic water treatment apparatus according to claim 3, wherein the facing polar surfaces of the permanent magnets adjacent to each other in the magnetization direction have different polarities or the same polarities. 5. The permanent magnet of each magnet array is inserted in a polygonal inner cylinder corresponding to a change angle of a magnetization direction.
The magnetic water treatment device described in 1. 6. The magnetic water treatment apparatus according to claim 5, wherein the inner cylinder has a hexagonal shape, and the permanent magnets of each magnet row are inserted into the inner cylinder by changing the magnetization direction by 120 degrees. 7. The magnetic water treatment apparatus according to claim 6, wherein the hexagonal inner cylinder is inserted in the cylindrical casing in a honeycomb shape with a predetermined gap.