JPH06114285A - Magnetic particle-containing water treatment device - Google Patents

Abstract

PURPOSE:To successfully separate the magnetic particles magnetized and cap tured in a magnetic treatment without reincorporating these particles into an area of treated and purified water under the specifications that the magnetic particle-contg. water discharged from a wet process brushing stage for strips of iron, etc., into a tank and is magnetically treated with a magnetizing device. CONSTITUTION:The tank 1 housing the magnetic particle-contg. water is internally and vertically partitioned by a partition. A slit passage extending in the cross direction of the tank 1 is formed in this partition. This passage is formed as the magnetic treating media by the magnetizing device 3 isolated from the water in the tank by a nonmagnetic partition wall 4. A supply pipe 6 for the water to be treated is connected downward from above to the lower area 1a of the tank 1 partitioned by the partition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to water containing magnetic particles discharged from a wet brushing process such as polishing or cleaning a strip of iron, steel or the like with a brush roll machine under a spray of water, an alkaline solution or the like. Magnetically treating the magnetic particles to remove the magnetic particles contained in the magnetic particles to clean them.

In recent years, the development of such a wet brushing technique has been remarkable, and the amount of water containing magnetic particles discharged from the wet brushing process has reached a considerable amount per brush roll machine.

[0003] Thus, this type of water treatment is becoming a large amount of too big a problem.

[0004]

2. Description of the Related Art Conventionally, there has been established a method of storing water containing magnetic particles discharged from a wet brushing process of strips of iron, steel, etc. in a tank and effectively cleaning it by a magnetic specification treatment. It has not been.

In order to treat the water to be treated with magnetic specifications, a magnetizing device such as a magnet is installed directly in the water to be treated or under the partition wall, and magnetic particles in the water to be treated are directly or directly adsorbed to the magnetizing device. It is generally separated from water. However, in this conventional method, when magnetic particles adsorbed on the magnetizing device are exfoliated to take them out of the tank, there is no guarantee that the magnetic particles will not enter the area of the purified treated water in the tank.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Under the specifications that water containing magnetic particles discharged from the wet brushing process of strips of steel, etc. is stored in a tank and the water is magnetically processed by a magnetizing device, it is placed in an area of treated purified water. This is to ensure that the magnetism-collecting magnetic material particles are properly separated without being mixed again.

[0007]

In a water treatment apparatus containing magnetic particles according to the present invention, the inside of a tank containing water containing magnetic particles is divided into upper and lower parts by a partition, and the partition is arranged in the transverse direction of the tank. An elongated slit-shaped passage is formed, and the slit-shaped passage is a magnetic treatment medium by a magnetizing device separated from water in the tank by a non-magnetic partition wall, and the lower side of the tank is divided by the partition. The area is characterized in that a treated water supply pipe is connected downward from above.

By adopting this configuration, the intended problem solution can be achieved as will be described later.

In the present invention, the following structure can be added to the device having the above structure.

A strainer is arranged at a position corresponding to the surface layer of the internal water of the tank. The strainer is of a type that allows treated water in the tank to pass through the inside in an upward flow and overflow to flow out, and the strainer has a water-passing type housing on the upper side and a grid-type housing on the bottom side and the inside of the housing. And a bottom grid of the housing is trapezoidal in cross section.

A strainer is installed in the slit-shaped passage in the tank. The strainer includes a water-permeable floor and a weak magnetic small lump filter media provided on the floor.

[0012]

The present invention will now be described with reference to the drawings showing the embodiments of the present invention.

In the figure, reference numeral 1 denotes a tank for containing water containing magnetic particles, and the inside of the tank 1 is partly divided into upper and lower parts by a partition 10 which is applied to an upper surface plate of a square tube 4 which will be described later. There is. The partition 10 is formed with a slit-shaped passage 11 extending in the transverse direction of the tank 1. The slit-shaped passage 11 is used as a magnetically processed medium by a magnetizing device such as a magnet 3. The slit-shaped passage 11 has a vertical scraper S in a direction transverse to the slit-shaped passage 11.
Are arranged.

The magnet 3 is isolated from the water in the tank 1 by a rectangular tube 4 made of a non-magnetic partition wall. The magnet 3 is shown diagrammatically as a block diagram in FIGS.

In the drawing, the rectangular tubes 4 are arranged in a radial arrangement of four planes, but they may be arranged in a radial arrangement other than four or two opposing flat arrangements.

A slanted roof 4 for preventing sludge from accumulating in a portion of the square tube 4 inside the tank 1
Attaching 0 can be adopted.

Many magnets 3 are arranged close to the left and right side wall plates 41 of the rectangular tube 4 in the longitudinal direction of the rectangular tube 4, and a plurality of rows are arranged vertically, as shown in FIG. Four
As for the front wall plate 42 side, it is adopted to mount it on the support frame 31 in the rectangular tube 4 in an arrangement as shown in FIG. it can. A front plate 31 a of the support frame 31 is fixed to the tip of the plunger 51 of the air cylinder 5. The support frame 31 includes wheels 31b that contact the left and right side wall plates 41 of the rectangular tube 4 and wheels 31C that contact the bottom plate 43.

To the lower area a1 in the tank 1 divided by the partition 10, a treated water supply pipe 6 is connected downward from above through a passage 7 surrounded by the front surface of the rectangular tube 4.

When the water to be treated contains, in addition to the magnetic particles, particles such as fiber scraps produced by abrasion of the brush roll bushes of the brush roll machine and floating in the water, the tank 1 contains A strainer is arranged at a position corresponding to the surface layer of water or in the slit-shaped passage 11.

The strainer 2 arranged at a portion corresponding to the surface layer of the internal water of the tank 1 is of a type that allows the treated water in the tank 1 to pass through the inside in an upward flow and to overflow. The strainer 2 includes a housing 20 having a water-passing type on the upper side and a grid type on the bottom side, and a filter medium of a small mass, for example, a ball filter medium 21 having a diameter of several millimeters, which is laid and sealed in the housing 20 with an appropriate thickness. It has ingredients. The grid 22 on the bottom side of the housing 20 has a trapezoidal transparent shape in cross section. In the illustrated example, the housing 20 is a pair of upper and lower constituent elements, and the top and bottom plates of the upper and lower half constituent elements 20a and 20b are grids. The grid 23 of the upper half-side component 20a of the housing 20 may be a cross-section rectangular gap type. In order to allow the treated water to pass through the inside of the strainer 2 in an upward flow, for example, a partition 8 having an opening 80 at the bottom is arranged at a position corresponding to the internal water surface layer of the tank 1, and the opening 80 is covered by the housing 20 of the strainer 2. In this way, the strainer 2 can be attached to the partition 8. For mounting the strainer 2, a type in which a flange 201 formed on the housing 20 is coupled to the partition 8 can be adopted.

The strainer 2'disposed in the slit-shaped passage 11 of the tank 1 is a water-permeable type, for example, a grid type floor 2.
2'and the weak magnetic material provided on the floor 22 ', that is, a magnetic material that is magnetized when in the magnetic field of the magnetizing device 3 and loses magnetism if it goes away from the magnetic field, for example, stainless steel, amorphous It comprises a small mass of metal, soft ferrite, for example a ball filter media 21 'with a diameter of a few mm.

The water to be treated, for example, the waste water from the brushing process A such as wet polishing of an iron strip brush roll machine, flows into the lower area a1 of the tank 1 through the supply pipe 6 and the passage 7. In this case, the fact that the pipe 6 communicates with the lower area a1 downward from above results in subjecting the water to be treated to a magnetic treatment by the magnetizing device 3 with a downward flow. That is, when the water to be treated flows down the passage 7, magnets 3 in the water are magnetized by the magnets 3, 3 ... A primary treatment of adsorption can be performed.

Next, the water to be treated ascends from the lower area a1 through the slit-shaped passage 11 which is a magnetically treated medium and enters the upper area a2 of the tank 1. The magnetic particles in the water are magnetized when the water moves up the slit-shaped passage 11, and are attracted to the magnetizing devices 3, 3, ...

As described above, the water to be treated, which has already been magnetically treated in the process of entering the lower area a1 of the tank 1, ascends in the slit-shaped passage 11 and is further magnetically treated. Moreover, the water pressure in the upper area a2 is applied to the rising water, and the slit of the slit-shaped passage 11 has a function like a throttle valve. Therefore, the right and left side wall plates 41, 41 of the rectangular tube 4 are magnetized in the slit-shaped passage 11.
The magnetic particles in the water adsorbed by the inner magnets 3, 3, ... As partition walls are suppressed from flowing into the upper area a2 with the rising water flow, and are effectively retained in the slit-shaped passage 11. Further, as a result, the adsorption of the magnetic particles on the partition wall by the magnetization in the slit-shaped passage 11, that is, the separation from water by the magnetic treatment is also effective.

That is, the slit-shaped passage 11 which is the magnetic treatment medium according to the present invention exists between the lower area a1 and the upper area a2 in the tank 1 partitioned by the partition 10 and is made of a magnetic substance in water. It functions as a kind of barrier for effectively trapping particles, and substantially blocks the upper area a2 with respect to the lower area a1 of the tank 1 and brings the upper area a2 into the magnetically treated purified water area. is there.

Thus, according to the present invention, the water containing magnetic particles discharged from the wet brushing process of strips of iron, steel, etc. is stored in a tank, and the water is magnetically processed by a magnetizing device. It is ensured that the collected magnetized magnetic particles in the treatment are not re-mixed into the area of the purified water, but are separated well.

Incidentally, in the present invention, it was confirmed that the removal rate of the magnetic material contained in the water to be treated was 90% or more.

The water purified by the magnetic treatment in the upper area a2 of the tank 1 is preferably discharged from the tank 1 by overflow.

In the slit-shaped passage 11, the magnetizing device 3
The magnetic particles adsorbed on the partition wall are retracted by the plunger 51 of the air cylinder 5 of the magnetizing device 3, and the scraper S is used to exfoliate the magnetic particles on the partition wall while the magnetic particles on the partition wall are moved in association with the retraction. The water in the tank 1 may be drained from the bottom and dropped.

When the water to be treated contains suspended debris such as fiber dust, it is a strainer 2 at a portion corresponding to the surface layer of the water inside the tank 1 or a strainer 2'of the slit-like passage 11.
In an upward flow, filtered through a filter bed with groups of filter media 21 or 21 'and removed.

In the former strainer 2, the bottom grid 22 of the housing 20 in which the filter material 21 is enclosed is a trapezoidal transparent type having a trapezoidal cross section. In this configuration, the strainer 2 is a type that allows water to pass in an upward flow, and the water is raised in a slow flow, and the filter medium 21 is a small lump.
The swelling of water through the filter bed by the group of (4) and the floating dregs are retained under the bottom grid 22 to prevent the floating dregs from entering the filter bed by the group of filter media 21.

The floating debris staying under the grid 22 is
Serves as a filter bed for the water entering the strainer 2,
A higher effect can be obtained by preventing the floating debris from entering the filter medium in the strainer 2.

As a result, when the filter bed in the strainer 2 is backwashed (washed with water having a flow opposite to the flow of the treated water), the suspended debris can be washed off successfully.

To backwash the filter bed of the strainer 2, while gradually draining the treated water in the tank 1 from the drain pipe L at the bottom,
Strainer 2 for washing water shower less than the amount of drainage
You can make it go down from above. Then strainer 2
Since the bottom side grid 22 is a trapezoidal cross-section, which is a spread type with a downward spread, fiber dust and other debris between the grid 22 is well separated from the grid, and the debris under the grid 22 is heavy due to the water content due to the liquid level drop. Effectively washed away.

The strainer 2'provided in the slit-shaped passage 11 not only filters the water flowing upward in the passage 11 but also magnetizes the water in the passage 11 in the forward position of the magnetizing device 3. At this time, the filter medium 21 'made of a weak magnetic material is also magnetized, and the possibility that the magnetized magnetic material in the water in the passage 11 will come into contact with each other is significantly improved, which effectively contributes to magnetic separation. The fact that the filter media 21 'are small agglomerates has a high efficiency of causing the filter bed by the group to wobble water and remove floating debris.

To backwash the strainer 2 ', the tank 1
The water in the tank 1 may be washed out by draining the water from the pipe L. At that time, if necessary, the magnetizing device is retracted.

The treated water that overflows the strainer 2 on the liquid surface of the tank 1 is collected in a chamber 1a surrounding the tank 1 and connected to the outlet side of the strainer 2, and is collected by a pipe (not shown) by a pump (not shown). Brushing process A through
Can be reused in brushed water.

[0038]

As is apparent from the above description, according to the present invention, water containing magnetic particles discharged from the wet brushing process of strips of iron, steel, etc. is stored in a tank, and the water is magnetized by a magnetizing device. Under the specification that
There is an effect that the magnetization-collecting magnetic material particles in the treatment are remixed in the treated purified water area without being re-mixed, and are effectively separated.

[Brief description of drawings]

1A is an elevational view showing a longitudinal section of an embodiment of the present invention, and FIG. 1B is a view of a rectangular tube in the apparatus shown in FIG. It is a perspective view of a part.

FIG. 2 is a plan view of the device shown in FIG.

FIG. 3 is a side view showing an arrangement example of a magnetizing device according to the present invention.

4 (A) is a front view of the magnetizing device mounting frame shown in FIG. 3, and FIG. 4 (B) is a front view of the magnetizing device arrangement of FIG.

FIG. 5 is a vertical cross-sectional view showing an example of a strainer having a tank liquid level arrangement according to the present invention with a part omitted.

6 (A) is a plan view of the lower half component of the housing in the strainer of FIG. 5, FIG. 6 (B) is a longitudinal sectional view thereof, and FIG. 6 (C) is a transverse sectional view thereof.

7 (A) is a bottom view of the constituent elements on the upper half side of the housing in the strainer of FIG. 5, FIG. 7 (B) is a longitudinal sectional view thereof, and FIG. 7 (C) is a transverse sectional view thereof.

FIG. 8 is an elevation view in the tank radial direction showing an example of a strainer having a slit-like passage arrangement according to the present invention together with a part of a magnetizing device.

9 is a front view of the strainer, the rectangular tube and the magnetizing device shown in FIG. 8. FIG.

[Explanation of symbols]

 1 Tank 2 Strainer 2'Strainer 3 Magnetizing Device 4 Square Tube (Non-magnetic Partition Wall) 6 Untreated Water Supply Pipe 10 Partition 11 Slit Channel a1 Lower Area a2 Upper Area 20 Strainer Housing 21 Filter Media 21 'Filter Media 22 Bottom Side Grid 22 'floor

Claims (3)

[Claims] 1. The inside of a tank containing water containing magnetic particles is divided into upper and lower parts by a partition, and a slit-shaped passage extending in the transverse direction of the tank is formed in the partition.
The slit-shaped passage serves as a magnetic treatment medium by a magnetizing device which is isolated from water in the tank by a non-magnetic partition wall, and a treated water supply pipe is provided from above in a lower area of the tank divided by the partition. A water treatment device containing magnetic particles, characterized in that they are connected downward. 2. The inside of a tank containing water containing magnetic particles is partitioned by a partition into upper and lower parts, and a slit-shaped passage extending in the transverse direction of the tank is formed in the partition.
The slit-shaped passage serves as a magnetic treatment medium by a magnetizing device which is isolated from water in the tank by a non-magnetic partition wall, and a treated water supply pipe is provided from above in a lower area of the tank divided by the partition. A strainer of a type that is communicated downward and that allows the treated water in the tank to pass through the inside in an upward flow and to flow out by overflow is disposed at a position corresponding to the surface layer of the internal water of the tank. A magnetic type particle containing a water type, a grid type housing on the bottom side, and a small lump filter medium enclosed in the housing, wherein the bottom side grid of the housing is a trapezoidal gap type cross section. Water treatment equipment. 3. The inside of a tank containing water containing magnetic particles is divided into upper and lower parts by a partition, and a slit-shaped passage extending in the transverse direction of the tank is formed in the partition.
The slit-shaped passage serves as a magnetic treatment medium by a magnetizing device which is isolated from water in the tank by a non-magnetic partition wall, and a treated water supply pipe is provided from above in a lower area of the tank divided by the partition. The strainer is connected downward, and a strainer is arranged in a slit-shaped passage in the tank.
A magnetic particle-containing water treatment device comprising a water-permeable floor and a filter material of a small mass made of a weak magnetic material provided on the floor.