JPH11114326A - Magnetically separating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a device and to make the device compact by rotating a magnetic filter in such a manner that the filter alternately passes through an effective magnetic field and ineffective magnetic field, that magnetic solid suspended substances are adsorbed by a filament in the effective magnetic field and that the magnetic solid suspended substances are removed in the ineffective magnetic field. SOLUTION: A raw water 40 containing magnetic solid suspended substances is introduced by a raw water supply pump 42 through a raw water inlet 36 to a separator container 30. The raw water 40 enters the effective magnetic field generated by an electromagnet 35, where the magnetic solid suspended substances in the raw water 40 are trapped by filaments 32. The water 40 as treated water 46 is discharged through a treated water discharging part 37. The magnetic solid suspended substances trapped by the filaments are carried by rotation of the filament 32 to an ineffective magnetic field region, where the filaments 32 are vibrated by projections 67 to remove the solid suspended substances with a reverse washing water. The removed magnetic solid suspended substances with the reverse washing water are sent from a reverse washing water discharging part 39 through a reverse washing water returning pipe 61 and reserved in a reverse washing waste water tank 52.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic separation apparatus for purifying water as a treatment fluid by magnetic separation in a water treatment apparatus, and more particularly to a magnetic separation apparatus for continuously performing magnetic separation using a high gradient magnetic filter. It relates to a preferred magnetic separation device.

[0002]

2. Description of the Related Art In a conventional magnetic separation apparatus, an electromagnet using a DC power supply is used as a magnetic field generator for applying a magnetic field from the outside to a high gradient magnetic filter.

[0003] A high gradient magnetic filter is formed of a magnetic thin wire having an extremely small radius of curvature, and is filled with a wire mesh-shaped magnetic stainless fine wire. By arranging a magnetic wire having an extremely small radius of curvature in a uniform magnetic field in this way, a local magnetic field density is generated near the surface of the magnetic wire, and a large magnetic gradient is generated. The magnetic solid suspension in the raw water is adsorbed on the surface of the magnetic fine wire when passing through the high gradient magnetic filter and separated from the raw water.

FIG. 10 is a system diagram showing a conventional magnetic separation device. The operation of the high gradient magnetic filter will be described with reference to FIG.
Is temporarily stored in the raw water tank 2, flows through the water pipe 4 by driving the raw water feed pump 3, and flows into the separator container 6 via the valve 5.

Next, when a DC current is supplied from a DC power supply 8 to an annular air-core electromagnet 7 disposed around the separator container 6, a magnetic field proportional to the DC current is generated in the cylindrical separator container 6. Occurs.

[0006] When a magnetic field is generated in the separator container 6 to magnetize the magnetic fine wire filling 9 in the separator container 6, the magnetic field in the separator container 6 is changed to the magnetic magnetic wire filling. Disturbance is generated due to the object 9, localization of magnetic flux is locally generated, and a large number of portions having a high magnetic field gradient are generated.

[0007] When the raw water 1 containing the magnetic solid suspended matter is supplied in an upward flow from below the separator vessel 6, the magnetic solid suspended matter in the raw water 1 is transferred to the surface of the magnetic substance thin wire packing 9 of the magnetic substance fine wire. Is supplemented by a large magnetic force. The raw water 1 purified by the separator vessel 6 passes through the backwash water tank 11 and the valve 12 and is discharged to the treated water tank 13 as treated water 10.

After a certain amount of the magnetic solid suspended matter is captured by the magnetic fine wire filler 9, the magnetic fine wire filler 9 is backwashed in order to recover the performance of magnetic separation. In this backwash, first, the raw water feed pump 3 is stopped, and the valve 5 and the valve 12
Is closed to stop the feed of raw water 1.

Next, after the power supply of the DC power supply 8 is turned off and the magnetic field is eliminated, the compressed air flows into the backwash water tank 11 through the valve 16 from the air tank 15 in which the compressed air compressed by the compressor 14 is stored. The valve 17 is opened.

The backwash water 18 in the backwash water tank 11
From the upper part of the separator container 6 to wash and remove the magnetic solid suspended matter adhering to the surface of the magnetic fine wire filler 9, and drain it as a backwash drainage 19 to a backwash drainage tank 20.

Thereafter, the valves 16 and 17 are closed, a DC current is again supplied from the DC power supply 8 to the air-core electromagnet 7, the valves 5 and 12 are opened, and the raw water pump 3 is operated to restart magnetic separation. Note that, during the backwashing of the magnetic thin wire filler 9, the raw water 1 is not purified. The cycle at which the backwash is performed differs depending on the concentration of the magnetic solid suspension in the raw water 1 and the processing speed, and the shorter the processing time of the raw water 1, the shorter the cycle.

Conventionally, as a continuous water purification apparatus to which this kind of solid-liquid separation technology is applied, two or more magnetic filters of a magnetic separation apparatus using a magnetic fine wire packing are provided,
Japanese Patent Application Laid-Open No. Sho 59-3 discloses that it is sufficient to switch between reproduction times.
Although it is disclosed in Japanese Patent Publication No. 71, its specific configuration and operation are not described.

[0013]

By the way, in recent years, with the increase of the purification capacity of the water treatment apparatus, it is necessary to improve the performance of the magnetic separation unit. However, in the conventional method, the regeneration time by backwashing is required, and the backwash cycle becomes shorter as the processing amount increases. Therefore, during backwashing, there is no need to purify the raw water, requiring the use of multiple high gradient magnetic filters. Therefore, it is desired to realize an apparatus capable of continuous treatment in which separation and backwashing can be performed simultaneously without stopping treated water.

That is, in the conventional magnetic separation apparatus, in recent years, with the increase in the purification treatment amount of the water treatment apparatus,
It is necessary to improve the performance of the magnetic separation unit, and one method is to increase the magnetic field strength and increase the capturing power of the magnetic solid suspended matter. However, as described above, the more the amount of treatment increases, the shorter the backwashing cycle becomes, and the purification of raw water is not performed during the backwashing. Therefore, there is a problem that the amount of purification treatment cannot be increased with one magnetic filter.

The present invention has been made in view of the above-mentioned circumstances, and has as its object to provide a magnetic separation apparatus capable of eliminating the time of unpurified processing fluid due to backwashing and increasing the purification processing amount. .

[0016]

In order to solve the above-mentioned problems, a first aspect of the present invention is to provide a separator container formed in a cylindrical shape, and a magnet for partially generating a magnetic field in the separator container. And a circle that is accommodated in the separator container, rotates so as to alternately pass through an effective magnetic field and an ineffective magnetic field by the magnet, and adsorbs the magnetic substance from raw water containing the magnetic substance supplied in the effective magnetic field. An annular magnetic filter, a rotation driving means for rotating the magnetic filter, and a raw water inflow disposed in the separator container such that a flow direction of the raw water in the effective magnetic field is a rotation direction of the magnetic filter. A backwash water inflow section for inflow and discharge of backwash water disposed in the separator container and for removing magnetic substances adsorbed on the magnetic filter in the ineffective magnetic field; And a backwash water discharging unit, characterized by being configured to perform regenerating operation and adsorption operation of the magnetic filter simultaneously.

According to a second aspect of the present invention, in the magnetic separation device according to the first aspect, the separator container is formed in a closed structure.

According to a third aspect of the present invention, in the magnetic separator according to the first aspect, a circulation line is provided for returning the backwash water from the backwash water discharge section to the backwash water inflow section, and the backwash water has a predetermined concentration. It is characterized by circulating until it becomes.

According to a fourth aspect of the present invention, there is provided the magnetic separation apparatus according to the first aspect, wherein the flow rate and the pressure of the raw water flowing into the separator vessel, the flow rate and the pressure of the treated water, and the backwashing flow flowing into the vessel separator. A fluid control mechanism for controlling the flow rate and pressure of water and the flow rate and pressure of backwash wastewater, respectively, is provided.

According to a fifth aspect of the present invention, in the magnetic separation apparatus according to the fourth aspect, the fluid control mechanism makes the flow rate of the raw water and the backwash water equal, and the flow rate of the treated water and the backwash wastewater respectively. Control as described above.

According to a sixth aspect of the present invention, in the magnetic separation device according to the fourth or fifth aspect, the fluid control mechanism is configured to control the pressure of the raw water and the pressure of the backwash water, and the pressure of the treated water and the pressure of the backwash water, respectively. It is characterized in that they are controlled to be equal.

According to a seventh aspect of the present invention, there is provided the magnetic separation apparatus according to the first aspect, wherein the separator container has a fluid inlet / outlet serving as a raw water inlet, a treated water outlet, a backwash water inlet, and a backwash water outlet. And the fluid inlet and outlet are selected such that at least one of the flow rate and the pressure of the raw water and the backwash water and the flow rate and the pressure of the treated water and the backwash wastewater are equal to each other.

According to an eighth aspect of the present invention, in the magnetic separation device according to the first aspect, the magnetic separation device includes:
A protrusion is provided inside the separator container between the backwash water inflow portion and the backwash water discharge portion, and each of the filaments of the magnetic filter is flipped by the protrusion.

According to a ninth aspect of the present invention, in the magnetic separation apparatus according to the eighth aspect, the amount of protrusion of the protrusion to the inside of the separator container can be changed based on the amount of treated water and the properties of the treated substance. .

According to a tenth aspect of the present invention, in the magnetic separation device according to the first aspect, a compressed air introduction pipe is disposed upstream of the backwash water inflow section.

According to an eleventh aspect of the present invention, in the magnetic separation device according to the first aspect, the rotation speed of the magnetic filter is variable.

According to a twelfth aspect of the present invention, in the magnetic separation device according to the first aspect, the magnetic filter has a plurality of filaments for adsorbing a magnetic substance, and a rotating member which holds and rotates these filaments, A groove is formed at a position where the rotating member and the separator container face each other to form a water seal structure.

According to a thirteenth aspect of the present invention, in the magnetic separation device according to the first aspect, an inflow portion of the raw water, the treated water, the backwash water and the backwash wastewater into the separator container and an outflow portion from the separator container are provided. Each of the separators is directed in a tangential direction of a flow path in the separator container.

According to a fourteenth aspect of the present invention, in the magnetic separation device according to the first aspect, the backwash water inflow portion and the backwash water discharge portion are vertically arranged vertically with respect to the flow path in the separator container. It is characterized by having been done.

According to a fifteenth aspect of the present invention, in the magnetic separation device according to the first aspect, the magnet is a superconductive magnet.

According to a sixteenth aspect of the present invention, in the magnetic separation device according to the fifteenth aspect, the superconducting electromagnet is a pair of split electromagnets.

A seventeenth aspect of the present invention is the magnetic separator according to the first, fifteenth or sixteenth aspect, wherein a magnetic shield is provided outside the backwash portion of the separator container.

[0033] The invention of claim 18 is the invention of claim 15 or 1
6. The magnetic separator according to 6, wherein an iron core is provided on the superconducting electromagnet.

[0034] The invention of claim 19 is the invention of claims 15 to 1
8. The magnetic separation device according to any one of items 8, wherein a refrigerator is provided integrally with the superconducting electromagnet.

[0035]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] (Claims 1 to 6, 8 to 1)
FIG. 1 is a system diagram showing a first embodiment of a magnetic separation device according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG.

(Structure of the First Embodiment) As shown in FIG. 1, the magnetic separator of this embodiment has a separator container 30 formed in a cylindrical shape and having a closed structure. Houses a magnetic filter 31 formed in an annular shape.

The magnetic filter 31 includes a plurality of filaments 32 as magnetic thin wires radially arranged.
The filament adsorbs the magnetic solid suspension from raw water containing the magnetic solid suspension (hereinafter, also referred to as a magnetic substance). These filaments 32 are held on a rotating disk 33 as a rotating member.

As shown in FIG. 2, the rotating disk 33 is operatively connected to a driving motor 34 as a rotation driving means. By driving the driving motor 34, the magnetic filter 31 is rotated counterclockwise through the rotating disk 33. Rotate around. The rotation speed of the drive motor 34 can be changed, and the rotation speed of the magnetic filter 31 can be changed by changing the rotation speed.

An electromagnet 35 is provided in a part of the separator container 30, and the electromagnet 35 partially generates a magnetic field in the separator container 30. Thus, the separator container 30
The magnetic filter 31 rotates so as to alternately pass through the effective magnetic field and the ineffective magnetic field by partially generating a magnetic field therein, and in this effective magnetic field, the filament 32 adsorbs the magnetic solid suspension from the raw water. On the other hand, the magnetic solid suspended matter adsorbed on the filament 32 in the invalid magnetic field is removed by the backwash water.

Further, in the circumferential direction of the separator container 30, at a predetermined interval, a raw water inflow portion 36 into which raw water containing magnetic solid suspended matter (magnetic substance) flows, and a magnetic solid suspended matter from the raw water. A treated water discharge part 37 for discharging treated water treated by removing water, and a backwash water inflow part 38 for flowing backwash water for backwashing the magnetic material adsorbed on the filament 32 in the invalid magnetic field. And a backwash water discharge section 39 for discharging backwash water obtained by backwashing the magnetic solid suspended matter.

Raw water inflow section 36 and backwash water inflow section 38
Is installed on the same plane as the turntable 33, and the raw water flows in parallel with the magnetic filter 31. Further, the raw water inflow section 36 and the treated water discharge section 37 are arranged such that the flow direction of the raw water is in the rotation direction of the magnetic filter 31 in the effective magnetic field of the electromagnet 35.

A raw water introduction pipe 41 for introducing raw water 40 is connected to the raw water inflow section 36.
The raw water feed pump 42, the flow rate sensor 43,
Control valve 44 as fluid control mechanism and pressure sensor 4
5 are sequentially inserted. The flow rate measured by the flow rate sensor 43 and the pressure measured by the pressure sensor 45 are:
Each is converted into an electric signal, and the opening of the control valve 44 is controlled based on these electric signals.

A treated water discharge pipe 47 for discharging treated water 46 is connected to the treated water discharge section 37. The treated water discharge pipe 47 has a pressure sensor 48 and a control valve as a fluid control mechanism from the upstream side. 49 and a flow sensor 50 are sequentially inserted. As described above, the flow rate measured by the flow rate sensor 50 and the pressure measured by the pressure sensor 48 are:
Each is converted to an electric signal, and the opening of the control valve 49 is controlled based on these electric signals.

One end of a backwash water introduction pipe 51 for introducing backwash water is connected to the backwash water inflow section 38, and the other end of the backwash water introduction pipe 51 is connected to a backwash drain tank. 52 are connected. A backwash water feed pump 53, a flow sensor 54, a control valve 55 as a fluid control mechanism, and a pressure sensor 56 are sequentially inserted into the backwash water introduction pipe 51 from the upstream side. Then, the opening of the control valve 55 is controlled based on the measurement results of the flow sensor 54 and the pressure sensor 56.

Further, the backwash water inflow section 38 and the pressure sensor 5
6 is provided with a compressed air introduction pipe 57.
The compressed air introduction pipe 57 is provided with a valve 58, an air tank 59, and an air compressor 60 sequentially inserted from the downstream side. Therefore, compressed air is stored in the air tank 59 by the air compressor 60, and the flow rate of the compressed air is controlled by adjusting the opening degree of the valve 58.

A backwash water return pipe 61 is connected to the backwash water discharge section 39 as a circulation line for returning the backwash water to the backwash drain tank 52. From the pressure sensor 62, the control valve 63 as a fluid control mechanism,
And a flow sensor 64 are sequentially inserted. Similarly to the above, the opening of the control valve 63 is controlled based on the measurement results of the flow sensor 64 and the pressure sensor 62.

The backwash water return pipe 61 has a water supply pipe 65.
Is connected, and water is supplied from the water supply pipe 65 to the backwash water return pipe 61 so that the concentration of the backwash water is kept constant. Further, a concentrated liquid discharge pipe 66 is connected to the backwash drain tank 52, and the concentrated liquid discharged pipe 66 discharges backwash water having a predetermined concentration.

On the other hand, a projection 67 is provided in the rotation locus of the magnetic filter 31 and inside the separator container 30 between the backwash water inflow section 38 and the backwash water discharge section 39. 67 is each filament 3 of the rotating magnetic filter 31
I try to play 2. In addition, the protrusion 67 is configured such that the amount of protrusion toward the radially inner side of the separator container 30 is variable based on the amount of treated water and the properties of the treated substance.

(Operation of First Embodiment) Next, the operation of the present embodiment will be described.

The raw water 40 containing the magnetic solid suspended matter is fed by a raw water feed pump 42 through a raw water introduction pipe 41, and is supplied with a flow rate sensor 43, a control valve 44, and a pressure sensor 4.
5 and flows into the separator container 30 from the raw water inflow portion 36.

Here, the raw water inflow section 36 and the backwash water inflow section 38 are installed on the same plane as the turntable 33 and
Flows parallel to the magnetic filter 31. The filament 32 of the magnetic filter 31 rotates counterclockwise via the turntable 33 by driving the drive motor 34.

The raw water 40 flowing into the separator container 30 flows through the flow path formed by the separator container 30 and the rotating disk 33 with a speed difference from the filament 32,
While entering the effective magnetic field region generated by the electromagnet 35, the magnetic solid suspension in the raw water 40 is captured by the filament 32, while the processed raw water 40 becomes the treated water 46, The water is discharged from the treated water discharge pipe 47 to the outside of the device via the control valve 49 and the flow rate sensor 50.

On the other hand, the magnetic solid suspended matter captured by the filament 32 is carried to the ineffective magnetic field region where the magnetic field is weak due to the rotation of the filament 32, the filament 32 is repelled by the projection 67, and vibration is given to the backwash water. To be removed. The backwash water is fed from a backwash drain tank 52 through a backwash water introduction pipe 51 by a backwash water feed pump 53, and is supplied with a flow rate sensor 54, a control valve 55, and a pressure sensor 5.
After passing through 6, the water flows into the separator container 30 from the backwash water inflow section 38.

On the other hand, the magnetic solid suspended matter is supplied to the pressure sensor 62, the control valve 63,
Then, the water is stored in the backwash drain tank 52 by the backwash water return pipe 61 via the backwash water return pipe 61, further fed by the backwash water feed pump 53, and the flow sensor 54, the control valve 55, and the It is introduced into the separator container 30 from the backwash water inflow section 38 via the pressure sensor 56, and the filament 32 is backwashed.

The compressed air is stored in the air tank 59 by the compressor 60, and the compressed air supplies the compressed air to the backwash water before the backwash water inflow section 38 via the valve 58, and the backwash efficiency is reduced. Is increasing. The backwash water is circulated for a certain period of time to reach a predetermined concentration and then drained, or at the same time, drains a certain amount from a concentrated liquid discharge pipe 66 provided in the backwash drain tank 52, and at the same time, the water supply pipe By supplying the same amount of water from 65, the concentration of the backwash water is kept constant.

The flow rate and pressure of the raw water 40 are converted into electric signals by the flow rate sensor 43, the pressure sensor 45, and the control valve 44, and the opening of the control valve 44 is controlled. In addition, treated water 4
6 also has a flow sensor 50, a pressure sensor 48 and a control valve 4
9, the inflow side of the backwash water is output by the flow rate sensor 54, the pressure sensor 56 and the control valve 55, and the outflow side of the backwash water is output by the flow rate sensor 64, the pressure sensor 62 and the control valve 63, and the respective flow rates and pressures are converted into electric signals. Converted and control valves 49,5
5, 63 are controlled.

The control method is as follows.
The opening degrees of 49, 55 and 63 are controlled so that the respective flow rates become equal. Further, control may be performed so that the respective pressures are equal, or control may be performed so that the pressure on each inflow side and the flow rate on each outflow side are equal.

(Effect of the First Embodiment) According to the present embodiment, the magnetic filter 31 rotates so as to alternately pass through the effective magnetic field and the ineffective magnetic field, and the filament 32 is rotated in the effective magnetic field. The magnetic solid suspended matter is adsorbed from the raw water, while the magnetic solid suspended matter adsorbed on the filament 32 in the invalid magnetic field is removed by backwash water,
That is, since the adsorption operation and the regeneration operation of the magnetic filter 31 are performed at the same time, the filament 32 can be regenerated while processing the fluid containing the magnetic solid suspended matter, and the parallel filters can be batch-processed. In a high gradient magnetic separation that had to be sequentially backwashed, a single magnetic filter 31 can continuously treat magnetic suspended solids, thereby realizing a greatly simplified and compact apparatus. Can be.

Also, since the flow direction of the raw water 40 is parallel to the rotation direction of the magnetic filter 31, there is no restriction on the configuration of the electromagnet 35 and a superconducting magnet is used because it is necessary to generate a strong magnetic field. Also, the electromagnet can be arbitrarily configured.

Further, since the magnetic filter 31 is housed in the separator container 30 which is a closed container, the pressure and the flow rate can be easily controlled, and the flow rate and the property of the raw water 40 can be changed immediately. And the separator container 30
Has a closed structure, so if this apparatus is installed in the middle of the line, the pressure of the treated water 46 does not need to be reduced,
A pump for pumping 6 to a dryer or the like becomes unnecessary.

This embodiment has a backwash water return pipe 61 for returning the backwash water discharged from the backwash water discharge section 39 to the backwash water inflow section 38, and circulates the fluid obtained by backwashing the magnetic solid suspended matter. Then, by using it as a backwashing fluid and circulating it until a predetermined concentration is reached, a fluid containing a high concentration of magnetic solid suspension can be obtained.

The raw water 40 flowing into the separator container 30
And the flow rate and pressure of the treated water 46,
Flow rate and pressure of the backwash water flowing into the vessel separator 30;
The flow rate and pressure of the backwash wastewater are controlled by control valves 44 and 4 respectively.
9, 55, 63, regardless of the flow rate and pressure of the fluid flowing into the container separator 30,
The state of the fluid in the container separator 30 can be arbitrarily controlled.

Further, the control valves 44, 49, 55, 63
The flow rate of the raw water 40 and the backwash water, the flow rate of the treated water 46 and the flow rate of the backwash wastewater are controlled to be equal to each other. By controlling the pressure of 46 and the pressure of the backwash wastewater to be equal to each other, two kinds of fluids of the raw water 40 and the backwash water flowing into the container separator 30 are mixed in the container separator 30. Can be exhausted without the need.

In the present embodiment, the magnetic filter 3
A projection 67 is provided inside the separator container 30 between the backwash water inflow section 38 and the backwash water discharge section 39 within the rotation locus of 1, and the projection 67 flips each filament 32 of the magnetic filter 31. Thereby, the removal rate of the magnetic solid suspended matter attached to the filament 32 can be increased.

The protrusion 67 has a variable amount of protrusion into the separator container 30 based on the amount of water to be treated and the properties of the substance to be treated, so that the efficiency of separating magnetic solid suspended matter from the filament 32 is optimally controlled. can do.

Further, a compressed air introduction pipe 57 is provided upstream of the backwash water inflow section 38, and compressed air is added to the backwash water to reduce the removal rate of the magnetic solid suspended matter attached to the filament 32. Can be improved. Further, by making the rotation speed of the magnetic filter 31 variable, it is possible to change the removal rate of the magnetic solid suspended matter in the processing fluid.

[Second Embodiment] (corresponding to claim 7) FIG. 3 is a configuration diagram showing a separator container of a second embodiment of the magnetic separator according to the present invention. The same or corresponding portions as those in the first embodiment will be described using the same reference numerals. The same applies to the following embodiments.

As shown in FIG. 3, the separator container 30 of the magnetic separation device according to the second embodiment includes a raw water inflow section 36, a backwash water inflow section 38, a treated water discharge section 37, and a backwash water discharge section 39. Many fluid ports are provided, and the fluid ports are selected at positions where the flow rates or pressures of the raw water 40, the backwash water, and the treated water 46 are equal.

Thus, the merging can be prevented without mixing the raw water 40 and the backwash water and the treated water 46 and the backwash wastewater in the separator container 30.

[Third Embodiment] (corresponding to claim 13) FIG. 4 is a configuration diagram showing a separator container of a third embodiment of the magnetic separation device according to the present invention.

As shown in FIG. 4, the separator container 30 of the magnetic separator according to the third embodiment comprises a raw water inflow section 36, a backwash water inflow section 38, a treated water discharge section 37, and a backwash water discharge section 39. The fluid inlet / outlet points in the tangential direction of the fluid flow path in the separator container 30.

As a result, the merging of the raw water 40 and the backwash water, and of the treated water 46 and the backwash wastewater can be prevented.

[Fourth Embodiment] (corresponding to claim 14) FIGS. 5A and 5B show a fourth embodiment of the magnetic separation apparatus according to the present invention.
It is the top view and front view which show the separator container of embodiment.

As shown in FIGS. 5A and 5B, the separator container 30 of the magnetic separator of the fourth embodiment has a raw water inlet 36 and a treated water outlet 37 at the center of the separator container 30. And the backwash water inflow portion 38
And a backwash water outflow section 39 are vertically arranged opposite to the flow path in the separator container 30 in the up-down direction.

As a result, the merging of the raw water 40 and the backwash water, and of the treated water 46 and the backwash wastewater can be prevented.

[Fifth Embodiment] (corresponding to claim 12) FIG. 6 is a sectional view showing a separator container of a magnetic separator according to a fifth embodiment of the present invention.

The separator container 30 and the turntable 33 of the magnetic separator of the fifth embodiment are formed with grooves 68 and 69 at positions facing each other, and have a water seal structure.

Thus, the separator container 30 and the rotating plate 33
Fluid can be prevented from entering the gap between the first and second fluids.

[Sixth Embodiment] (Claims 15, 16, 1)
FIGS. 7A and 7B show a sixth embodiment of the magnetic separator according to the present invention.
FIG. 3 is a configuration diagram and a plan view showing the embodiment.

The magnetic separator according to the sixth embodiment comprises a separator container 30 and a split superconducting electromagnet 70 for generating a magnetic field in an effective magnetic field region of the separator container 30.
And a vacuum container 71 containing the superconducting electromagnet 70,
A refrigerator 72 is provided integrally with the superconducting electromagnet 70 and cools the superconducting electromagnet 70.

That is, in the magnetic separation device of the sixth embodiment, the magnets are split type superconducting electromagnets 70 that form a pair, and a refrigerator 72 is provided integrally with the superconducting electromagnets 70.

It is necessary to take out the magnetic filter 31 of the separator container 30 for maintenance and disassembly. However, in the magnetic separator of this embodiment, the separator container 30 is independent of the superconducting electromagnet 70. Due to the configuration, only the separator container 30 is disassembled in FIG.
Move in the middle and arrow B directions.

As described above, according to the present embodiment, a strong magnetic field can be generated by using a pair of split type superconducting electromagnets 70 that can be installed in the separator container 30 as described above. Weak magnetic particles can be processed continuously and with high efficiency. Also, the superconducting conductive magnet 70
By operating with permanent current, power loss is eliminated,
The running cost can be reduced.

Further, the adoption of the split type makes it possible to apply a high magnetic field to the magnetic filter 31 provided between the superconducting electromagnets 70, and to facilitate the access of the magnetic filter 31 to facilitate disassembly / assembly and magnetic filter 31 becomes easy to maintain.

Since the refrigerator 72 is provided integrally with the superconducting electromagnet 70 and is of the direct cooling type, the overall configuration can be made compact.

[Seventh Embodiment] (corresponding to claim 17) FIG. 8 is a configuration diagram showing a seventh embodiment of the magnetic separator according to the present invention. The same or corresponding portions as those in the sixth embodiment are denoted by the same reference numerals and described.

The magnetic separation device according to the seventh embodiment is similar to that shown in FIG.
As shown in (2), a magnetic shield 73 is provided outside the backwash portion of the separator container 30 to shield the leakage magnetic field of the split superconducting electromagnet 70 at the position of the invalid magnetic field region.

When the magnetic field in the effective magnetic field region is increased in order to capture a magnetic material having a low magnetic susceptibility, that is, to remove weak magnetic particles, the leakage magnetic field in the backwash portion also increases proportionally.
The degree of adsorption of the magnetic solid suspended matter increases, and the magnetic solid suspension cannot be easily removed from the filament 32 of the magnetic filter 31.

Therefore, when the magnetic field is increased, the magnetic shield 73 is provided outside the magnetic filter 31 in the backwash portion where the influence of the leakage magnetic field is generated and shielded, thereby enabling efficient backwash.

[Eighth Embodiment] (corresponding to claim 18) FIG. 9 is a configuration diagram showing an eighth embodiment of a magnetic separator according to the present invention.

The magnetic separator according to the eighth embodiment includes a split type superconducting electromagnet 70 for generating a magnetic field, and an iron core 74 having a gap in the effective magnetic field region of the superconducting electromagnet 70.

Since the iron core 74 is provided on the superconducting electromagnet 70 in this manner, when a current is applied to the superconducting electromagnet 70, the magnetic flux passes through the iron core 74 and between the gaps (corresponding to the magnetic material capturing region of the magnetic filter 31). To generate a concentrated magnetic field. Therefore, compared with the superconducting electromagnet 70 in which the iron core 74 is not installed, the magnetic field can be generated more efficiently, and the current value can be reduced.

Further, by passing a magnetic field through the iron core 74, the magnetic field in the backwash portion can be reduced, and the leakage magnetic field to the external region can be reduced.

[0095]

As described above, according to the first aspect of the present invention, a separator container formed in a cylindrical shape, a magnet for partially generating a magnetic field in the separator container, and a separator container An annular magnetic filter which is housed in a magnet and rotates so as to alternately pass through an effective magnetic field and an ineffective magnetic field by a magnet, and adsorbs a magnetic substance from raw water containing the magnetic substance supplied in the effective magnetic field, and this magnetic filter Rotation driving means for rotating the raw water, the raw water inflow portion and the treated water discharge portion disposed in the separator container such that the flow direction of the raw water in the effective magnetic field is the rotation direction of the magnetic filter, and the separator container A backwash water inflow section and a backwash water discharge section for inflow and discharge of backwash water for removing magnetic substances adsorbed on the magnetic filter in the invalid magnetic field, and perform an adsorption operation and a regeneration operation of the magnetic filter. With the arrangements as performed during while processing the raw water containing the magnetic material in the magnetic filter, it is possible to reproduce the magnetic filter. as a result,
The amount of raw water purification treatment can be increased, and the apparatus can be greatly simplified and downsized.

Also, since the flow direction of the raw water is parallel to the rotation direction of the magnetic filter, there is no restriction on the configuration of the magnet, and even when a superconducting magnet is used due to the need to generate a strong magnetic field, The electromagnet can be arbitrarily configured.

According to the second aspect of the present invention, in the magnetic separation apparatus according to the first aspect, since the separator container is configured in a closed structure, if the apparatus is installed in the middle of the line, the pressure of the treated water is reduced. There is no need to do so, and a pump for pumping the treated water to a dryer or the like becomes unnecessary.

According to the third aspect of the present invention, in the magnetic separation device according to the first aspect, a circulation line is provided for returning the backwash water from the backwash water discharge section to the backwash water inflow section, and the backwash water is supplied to a predetermined amount. By circulating until the concentration reaches the concentration, a concentrated solution of the magnetic substance separated from the raw water can be obtained, and the amount of backwash wastewater can be reduced.

According to the fourth aspect of the present invention, in the magnetic separation apparatus according to the first aspect, the flow rate and pressure of raw water flowing into the separator vessel, the flow rate and pressure of treated water, and the reverse flow flowing into the vessel separator. By providing a fluid control mechanism to control the flow rate and pressure of the wash water and the flow rate and pressure of the backwash wastewater, respectively, the merging of raw water and backwash water, and treated water and backwash wastewater in the separator vessel Can be prevented.

According to a fifth aspect of the present invention, in the magnetic separation device according to the fourth aspect, the fluid control mechanism is configured to control a flow rate of the raw water and a flow rate of the backwash water, and a flow rate of the treated water and the flow rate of the backwash wastewater, respectively. By controlling them to be equal, it is possible to prevent merging of raw water and backwash water, and of treated water and backwash wastewater in the separator container.

According to the sixth aspect of the present invention, in the magnetic separation device according to the fourth or fifth aspect, the fluid control mechanism is configured to control the pressure of the raw water and the pressure of the backwash water, and the pressure of the treated water and the pressure of the backwash water. By controlling them so as to be equal to each other, it is possible to prevent the merger of the raw water and the backwash water, and the treated water and the backwash wastewater in the separator container.

According to the seventh aspect of the present invention, in the magnetic separation apparatus according to the first aspect, the separator vessel has a raw water inflow section, a treated water discharge section, a backwash water inflow section, and a backwash water discharge section. A large number of fluid ports are provided, and by selecting the fluid ports so that at least one of the flow rate and pressure of the raw water and backwash water and the treated water and backwash drainage are equal, backwash with the raw water in the separator container It is possible to prevent water and treated water from being combined with backwash wastewater.

According to the eighth aspect of the present invention, in the magnetic separation device according to the first aspect, the separator container between the backwash water inflow portion and the backwash water discharge portion in the rotation locus of the magnetic filter. By providing a projection on the inside and flipping each filament of the magnetic filter with the projection, the backwashing efficiency can be improved.

According to the ninth aspect of the present invention, in the magnetic separation device according to the eighth aspect, the protrusion is configured such that the amount of protrusion to the inside of the separator container is variable based on the amount of treated water and the properties of the treated substance. The backwashing efficiency can be adjusted in accordance with the properties of the fluid to be treated and the magnetic solid suspension.

According to the tenth aspect of the present invention, in the magnetic separation apparatus according to the first aspect, the compressed air introduction pipe is disposed upstream of the backwash water inflow portion, whereby air is mixed into the backwash water. The backwashing efficiency can be improved.

According to the eleventh aspect of the present invention, in the magnetic separation device according to the first aspect, the speed difference between the raw water and the treated water is changed by making the rotation speed of the magnetic filter variable.
The separation rate can be changed.

According to a twelfth aspect of the present invention, in the magnetic separation device according to the first aspect, the magnetic filter has a plurality of filaments for adsorbing a magnetic substance and a rotating member that holds and rotates these filaments. However, by forming a groove at a position where the rotating member and the separator container face each other to form a water seal structure, it is possible to prevent water from entering a gap between the separator container and the rotating member.

According to a thirteenth aspect of the present invention, there is provided the magnetic separation device according to the first aspect, wherein the raw water, the treated water, the backwash water and the backwash wastewater enter into the separator container and exit from the separator container. Are directed in the tangential direction of the flow path in the separator container, thereby preventing the merger of raw water and backwash water and treated water and backwash wastewater in the separator container.

According to the fourteenth aspect of the present invention, in the magnetic separation device according to the first aspect, the backwash water inflow portion and the backwash water discharge portion are vertically perpendicular to the flow path in the separator container. With the arrangement, it is possible to prevent the raw water and the backwash water and the treated water and the backwash wastewater from being combined in the separator container.

According to the fifteenth and sixteenth aspects of the present invention, in the magnetic separation device according to the first aspect, the magnet is a split-type superconducting magnet, so that small or weak magnetic particles are continuously treated. be able to.

Further, the use of the split type facilitates access to the magnetic filter, and simplifies disassembly / assembly and maintenance of the filter. Further, by operating the superconducting electromagnet with a permanent current, power loss can be eliminated and running costs can be reduced.

According to the seventeenth aspect, the first and the first aspects
In the magnetic separation apparatus described in 5 or 16, by providing a magnetic shield outside the backwash portion of the separator container, efficient backwash can be performed even when the magnetic field is increased.

According to the eighteenth aspect of the present invention, in the magnetic separation device according to the fifteenth or sixteenth aspect, by providing an iron core on the superconducting electromagnet, in addition to the effects of the seventeenth aspect,
By passing a magnetic field through the iron core, the magnetic field in the backwash portion can be reduced, and the leakage magnetic field to the external region can be reduced.

According to the nineteenth aspect of the present invention, in the magnetic separation device according to any one of the fifteenth to eighteenth aspects, the refrigerator is integrated with the superconducting electromagnet, so that the handling is easy and compact. Configuration becomes possible.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a first embodiment of a magnetic separation device according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a configuration diagram showing a separator container of a second embodiment of the magnetic separation device according to the present invention.

FIG. 4 is a configuration diagram showing a separator container of a third embodiment of the magnetic separation device according to the present invention.

FIGS. 5A and 5B are a plan view and a front view showing a separator container of a magnetic separator according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view showing a separator container according to a fifth embodiment of the magnetic separator according to the present invention.

FIGS. 7A and 7B are a configuration diagram and a plan view showing a sixth embodiment of the magnetic separation device according to the present invention.

FIG. 8 is a configuration diagram showing a seventh embodiment of the magnetic separation device according to the present invention.

FIG. 9 is a configuration diagram showing an eighth embodiment of the magnetic separation device according to the present invention.

FIG. 10 is a system diagram showing a conventional magnetic separation device.

[Explanation of symbols]

 Reference Signs List 30 separator container 31 magnetic filter 32 filament 33 turntable (rotary member) 34 drive motor (rotary drive means) 35 electromagnet 36 raw water inflow section 37 treated water discharge section 38 backwash water inflow section 39 backwash water discharge section 40 raw water 41 Raw water introduction pipe 42 Raw water feed pump 43 Flow rate sensor 44 Control valve (fluid control mechanism) 45 Pressure sensor 46 Treated water 47 Treated water discharge pipe 48 Pressure sensor 49 Control valve (fluid control mechanism) 50 Flow rate sensor 51 Backwash water introduction pipe 52 Backwash drainage tank 53 Backwash water feed pump 54 Flow rate sensor 55 Control valve (fluid control mechanism) 56 Pressure sensor 57 Compressed air introduction pipe 58 Valve 59 Air tank 60 Air compressor 61 Backwash water return pipe 62 Pressure sensor 63 Control valve (fluid Control mechanism) 64 Flow rate sensor 65 Water supply pipe 66 Concentrated liquid discharge pipe 67 Projection 68 groove 69 groove 70 superconducting electromagnet 71 vacuum vessel 72 refrigerator 73 magnetic shield 74 iron core

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinichi Kimura 2-4, Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside the Toshiba Keihin Works Co., Ltd. (72) Inventor Takeo Yamamori 1-1-1, Shibaura, Minato-ku, Tokyo No. Toshiba Corporation Head Office (72) Inventor Shinichiro Tochio 1000 Hamada, Aboshi-ku, Himeji-shi, Hyogo Nishiba Electric Machine Co., Ltd.

Claims (19)

[Claims] 1. A separator container formed in a cylindrical shape, a magnet for partially generating a magnetic field in the separator container, and an effective magnetic field and an ineffective magnetic field stored in the separator container and generated by the magnet. An annular magnetic filter that rotates so as to pass alternately and adsorbs the magnetic substance from the raw water containing the magnetic substance supplied in the effective magnetic field; a rotation driving unit that rotationally drives the magnetic filter; A raw water inflow portion and a treated water discharge portion disposed in the separator container such that the flow direction of the raw water in the magnetic field is the rotation direction of the magnetic filter; and the ineffective magnetic field disposed in the separator container. A backwash water inflow section and a backwash water discharge section for inflow and discharge of backwash water for removing magnetic substances adsorbed on the magnetic filter, wherein the adsorption operation and the regeneration operation of the magnetic filter are performed in the same manner. A magnetic separation device characterized in that the magnetic separation device is configured to be operated at times. 2. The magnetic separation device according to claim 1, wherein
A magnetic separator, wherein the separator container has a closed structure. 3. The magnetic separation device according to claim 1, wherein
A magnetic separation device comprising a circulation line for returning backwash water from a backwash water discharge section to a backwash water inflow section, and circulating backwash water to a predetermined concentration. 4. The magnetic separation device according to claim 1, wherein
Fluid for controlling the flow rate and pressure of raw water flowing into the separator vessel, the flow rate and pressure of treated water, the flow rate and pressure of backwash water flowing into the vessel separator, and the flow rate and pressure of backwash wastewater, respectively. A magnetic separation device comprising a control mechanism. 5. The magnetic separation device according to claim 4, wherein
A magnetic separation device, wherein the fluid control mechanism controls the flow rate of raw water and the flow rate of backwash water, and the flow rate of treated water and the flow rate of backwash wastewater to be equal to each other. 6. The magnetic separation device according to claim 4, wherein the fluid control mechanism includes a pressure of the raw water and a pressure of the backwash water,
A magnetic separator wherein the pressure of the treated water and the pressure of the backwash wastewater are controlled to be equal to each other. 7. The magnetic separation device according to claim 1, wherein
A large number of fluid inlets and outlets are provided in the separator container as raw water inflow, treated water discharge, backwash water inflow, and backwash water discharge.
A magnetic separation apparatus wherein the fluid inlet / outlet is selected such that at least one of the flow rate and pressure of raw water and backwash water and treated water and backwash wastewater are equal to each other. 8. The magnetic separation device according to claim 1, wherein
A protrusion is provided on the inside of the separator container between the backwash water inflow portion and the backwash water discharge portion in the rotation trajectory of the magnetic filter, and each filament of the magnetic filter is flipped by the protrusion. Magnetic separation device. 9. The magnetic separation device according to claim 8, wherein
A magnetic separation apparatus characterized in that the amount of protrusion is variable depending on the amount of water to be treated and the properties of a substance to be treated, and the amount of protrusion into the separator container is variable. 10. The magnetic separation apparatus according to claim 1, wherein a compressed air introduction pipe is provided upstream of the backwash water inflow section. 11. The magnetic separation device according to claim 1, wherein the rotation speed of the magnetic filter is variable. 12. The magnetic separation device according to claim 1, wherein the magnetic filter has a plurality of filaments for adsorbing a magnetic substance, and a rotatable rotating member that holds and rotates these filaments. A magnetic separator, wherein grooves are formed at opposing positions of the container to form a water seal structure. 13. The magnetic separation apparatus according to claim 1, wherein an inflow portion of raw water, treated water, backwash water, and backwash wastewater into and out of the separator container are respectively provided in the separator container. A magnetic separation device oriented in a tangential direction of an inner flow path. 14. The magnetic separation apparatus according to claim 1, wherein the backwash water inflow section and the backwash water discharge section are vertically arranged in a vertical direction with respect to a flow path in the separator vessel. Magnetic separation device. 15. The magnetic separation device according to claim 1, wherein the magnet is a superconducting magnet. 16. The magnetic separator according to claim 15, wherein the superconducting electromagnet is a pair of split electromagnets. 17. The magnetic separation device according to claim 1, wherein a magnetic shield is provided outside a backwash portion of the separator container. 18. The magnetic separator according to claim 15, wherein an iron core is provided on the superconducting electromagnet. 19. The magnetic separator according to claim 15, wherein a refrigerator is provided integrally with the superconducting electromagnet.