JP3070091B2 - Magnetic separation device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a magnetic separation apparatus, and more particularly to a water treatment apparatus used in the field of water treatment, which separates a magnetic substance contained in the water to be treated from the water to be treated. To a magnetic separation device.

[Conventional technology]

Conventionally, this type of magnetic separator has a magnetic field generating coil connected to a DC power supply on an outer peripheral portion of a cylindrical magnetic separator main body, and a spherical shape on an inner peripheral portion of the magnetic separator main body. Alternatively, a wire mesh magnetic member is provided. Then, the magnetic field generating coil is excited by a DC power supply to magnetize the magnetic member, and a magnetic substance contained in the water to be treated passing through the inside of the magnetic separator main body is adsorbed to the magnetic member and removed.

Further, as another magnetic separation device, a permanent magnet is arranged on the surface of a disk that is driven to rotate, and substantially half of the disk is submerged in the water to be treated and rotated to contain the magnetic substance contained in the water to be treated. In some cases, a permanent magnet is adsorbed and removed.

[Problems to be solved by the invention]

However, the magnetic separation device using the magnetic field generating coil has a drawback that the power of the equipment increases because a DC power supply must be installed.

In addition, since this magnetic separation device requires periodic backwashing, there is a disadvantage that the magnetization control of the magnetic member is complicated.

On the other hand, in order to remove the magnetic substance attached to the disk from the disk, the magnetic separation device in which a permanent magnet is disposed on the surface of the disk must remove the disk from the water to be treated, rotate the disk, and remove it by centrifugal force. Must. At this time, if the surface tension of the water attached to the disk is large, the magnetic substance cannot be removed, and the rotation speed of the disk cannot be increased beyond a predetermined speed. There is a disadvantage that.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a magnetic separation device that can reduce equipment power, can eliminate a reverse flood process, and can improve processing capacity. I do.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a magnetic separator for separating a magnetic substance contained in the water to be treated from the water to be treated by passing the water to be treated, wherein one end of a cylindrical magnetic separator main body is provided. The treated water is supplied from the treated water inlet, and the treated water is discharged from the treated water outlet provided at the other end of the magnetic separation device main body. A magnet is provided, and a drain port for discharging the magnetic substance is formed in a peripheral portion of a treated water outlet of the magnetic separation device main body. Further, in order to achieve the above object, the present invention provides a magnetic separation device for separating a magnetic substance contained in the water to be treated from the water to be treated by passing the water to be treated, wherein a cylindrical magnetic separation device main body is provided. The water to be treated is supplied from a water inlet which is opened at one end of the magnetic separator, and the water is discharged from a water outlet which is provided at the other end of the magnetic separation device main body. A permanent magnet is mounted substantially coaxially with the apparatus main body, and a drain port for discharging the magnetic substance is provided at the other end of the magnetic separation apparatus main body.

[Action]

According to the present invention, the permanent magnet (12) is installed on the inner periphery of the magnetic separation device main body (10), and the magnetic substance (16) is placed on the periphery of the treated water outlet (19) of the magnetic separation device main body (10). ) To form a drain outlet (23).

The feature of the present invention is that when the amount of the magnetic substance (16) adhered to the permanent magnet (12) increases, the magnetic force on the magnetic substance (16) decreases and the water flow velocity increases, so that the water flow velocity becomes higher than a predetermined value or more. Paying attention to the fact that the magnetic substance (16) does not adhere to the, and the magnetic substance (16) to which this does not adhere is physically removed with treated water. That is, the magnetic substance (16)
When the water is sent to the magnetic separation device main body (10) together with the water to be treated, it is separated from the water to be treated and is attracted to the permanent magnet (12). And attracted magnetic substance (16)
Is flowed along the inner peripheral surface of the magnetic separation device main body (10) by water flow force without being absorbed by the permanent magnet (12), and is discharged from the drain port (23). Thereby, the magnetic substance (16) can be separated from the water to be treated.

〔Example〕

Hereinafter, preferred embodiments of the magnetic separation device according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a first embodiment of the magnetic separator according to the present invention.

According to FIG. 1, the magnetic separation device main body 10 is constituted by a cylindrical permanent magnet 12. Below this permanent magnet 12 is a hopper 14
Are connected to each other, and at the lower part of the hopper 14, a treated water inlet 18 through which treated water containing the magnetic substances 16, 16,.

Above the permanent magnet 12, a treated water outlet 19 is provided. The treated water outlet 19 is a drain 21 of a drain pipe 20 for discharging treated water in the direction of arrow A and a drain for discharging treated water in the direction of arrow B. The outlets 23 of the pipes 22, 22 are formed. The drain pipe 20 is connected to an upper central portion of the permanent magnet 12. Also, the drain pipes 22, 22,...
As shown in FIG. 2, four portions are provided at equal intervals perpendicular to the drainage pipe 20.

Next, the operation of the first embodiment of the magnetic separator configured as described above will be described.

First, the water to be treated is sent from the treated water inlet 18 of the hopper 14 to the flowing water channel 24 formed by the permanent magnets 12. Running water channel 24
The to-be-processed water sent to the ascending process rises due to the flowing water power of the to-be-treated water. .. Contained in the water to be treated are attracted by the magnetic force of the permanent magnet 12 and adhere to the inner peripheral surface of the permanent magnet 12 during the rise of the water to be treated. Thereby, the treated water from which the magnetic substances 16, 16 ... have been removed can be discharged from the drain pipe 20. That is, the magnetic substance 1
6, 16,... Move to the inner peripheral portion of the permanent magnet 12 during the rise of the flowing water channel 24, so that the magnetic substances 16, 16,. The treated water will be discharged.

Next, a case where the thickness of the magnetic material layer 26 attached to the permanent magnet 12 exceeds a predetermined thickness will be described.

When the magnetic material layer 26 becomes thicker, the magnetic force exerted by the permanent magnet 12 on the magnetic materials 16, 16,. In addition, when the thickness of the magnetic material layer 26 is increased, the flowing channel 24 becomes narrower, and the flowing channel 24 becomes narrower.
The flow rate of the water to be treated in
16, 16,... Do not adhere to the permanent magnet 12. Magnetic substance 16,
When the magnetic substances 16, 16 are no longer attached, the magnetic substances 16, 16 are attracted to the permanent magnet 12, but flow along the inner peripheral surface of the magnetic substance layer 26 due to the hydraulic force. As a result, the concentration of the magnetic substance near the inner peripheral surface of the magnetic substance layer 26 increases, and the magnetic substances 16, 16,... Are combined with each other in the vicinity thereof to form the magnetic substance groups 28, 28,. And this magnetic substance group 2
Are raised along the inner peripheral surface of the magnetic material layer 26 by the hydraulic force, are absorbed by the drain pipe 22, and are discharged from the drain ports 23, 23 ... of the drain pipes 22, 22,. Become. At the same time, the treated water from which the magnetic substances 16, 16,... Have been separated is discharged to the outside through the drain port 21 of the drain pipe 20.

As described above, in the first embodiment, since the magnetic separation device main body 12 is configured by the permanent magnets 14, it can be configured with a simple structure. In addition, since the discharge pipes 22 for the magnetic substances 16, 16 ... are provided around the treated water outlet 19, even if the magnetic substances 16, 16 ... do not adhere to the permanent magnet 12, the magnetic substances 16, 16 ... are separated. can do.

Therefore, in the first embodiment, as compared with the conventional magnetic separation device, the facility power can be reduced, the reverse flooding step can be eliminated, and the processing capacity can be prevented from lowering.

FIG. 3 shows a second embodiment of the magnetic separator according to the present invention.

According to FIG. 3, the magnetic separation device 12 is provided with two permanent magnets 30, 32 having different magnetic flux densities. The permanent magnet 30
Uses a permanent magnet having a higher magnetic flux density than the permanent magnet 32.

Therefore, according to the second embodiment, the thickness of the magnetic material layer 34 attached to the permanent magnet 30 is greater than the thickness of the magnetic material layer 26 attached to the permanent magnet 32. Are no longer attached to the permanent magnet 30, are guided smoothly toward the magnetic material layer 26 by water flow force as indicated by arrows in the figure, and are introduced into the discharge pipe 22. Thereby, the processing ability of the magnetic substance can be improved.

FIG. 4 shows a third embodiment of the magnetic separator according to the present invention.

According to FIG. 4, the magnetic separator main body 36 is made of steel and formed in a cylindrical shape, and a rod-shaped permanent magnet 38 is suspended inside the magnetic separator main body 36 via a rope 40. The permanent magnet 38 is fixed coaxially with the magnetic separator main body 36.

On the other hand, a funnel 42 is installed above the permanent magnet 38 in the opposite direction, and a drain pipe 22 is connected to an upper end of the funnel 42. The upper part of the magnetic separator main body 36 is narrowed down and the
Are connected.

Therefore, according to the third embodiment, the magnetic substances 16, 16... That no longer adhere to the permanent magnet 38 rise along the surface of the magnetic substance layer 26 due to the hydraulic force, are introduced into the funnel 42 and are discharged. Become so. Also, the treated water from which the magnetic substances 16, 16 ... have been separated rises along the inner peripheral surface of the magnetic separator main body 36, and is discharged from the drain pipe 20. Thereby, the third embodiment can obtain the same effect as the first embodiment.

FIG. 5 shows a fourth embodiment of the magnetic separator according to the present invention.

According to FIG. 5, a cylindrical permanent magnet 44 is installed coaxially with the magnetic separator main body 36 inside the magnetic separator main body 36. Further, funnels 42, 42,... Are disposed above the permanent magnet 46.

Therefore, according to the fourth embodiment, the magnetic substances 16, 16 that no longer adhere to the outer and inner peripheral portions of the permanent magnet 46 rise along the magnetic material layers 26, and the funnels 42, 42. Will be introduced and discharged. As a result, the fourth embodiment can achieve the same effects as the first embodiment.

The permanent magnets 38, 44 shown in FIGS. 4 and 5 may be connected to permanent magnets having different magnetic flux densities, like the permanent magnets 30, 32 shown in FIG. At this time, care must be taken to install a permanent magnet having a high magnetic flux density on the inlet side of the water to be treated.

〔The invention's effect〕

As described above, according to the magnetic separation device of the present invention, the permanent magnet is installed on the inner periphery of the magnetic separation device main body, and the wastewater that discharges the magnetic substance to the periphery of the treated water outlet of the magnetic separation device main body. Since the port is provided, it is possible to reduce the equipment power of the magnetic separation device, eliminate the reverse flooding step, and improve the processing capacity.

[Brief description of the drawings]

1 is a sectional view showing a first embodiment of a magnetic separator according to the present invention, FIG. 2 is a top view of FIG. 1, and FIG. 3 is a second embodiment of the magnetic separator according to the present invention. Sectional view showing the fourth
FIG. 5 is a sectional view showing a third embodiment of the magnetic separator according to the present invention, and FIG. 5 is a sectional view showing a fourth embodiment of the magnetic separator according to the present invention. 10, 36: Magnetic separator main unit, 12, 30, 32, 38, 44: Permanent magnet, 16: Magnetic substance, 20, 22: Drain pipe, 21, 23: Drain outlet, 26, 34 ... ... magnetic material layer,

Continuation of front page (56) References JP-A-2-218412 (JP, A) JP-A-3-42093 (JP, A) JP-A-3-242290 (JP, A) JP-A-58-66393 (JP) , A) JP-A-58-55086 (JP, A) JP-A-58-8562 (JP, A) JP-A-62-221408 (JP, A) JP-A-63-104347 (JP, U) 53-50221 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B03C 1/00-1/32 C02F 1/48

Claims (4)

(57) [Claims] A magnetic separator for separating a magnetic substance contained in water to be treated from the water to be treated by passing the water to be treated, wherein the water to be treated is opened at one end of a cylindrical magnetic separator main body. The water to be treated is supplied from an inlet, and the water to be treated is discharged from a treated water outlet provided at the other end of the magnetic separation device main body. A permanent magnet is provided on an inner peripheral portion of the magnetic separation device main body, A magnetic separator, wherein a drain port for discharging the magnetic substance is formed in a periphery of a water outlet of the separator body. 2. The magnetic separator according to claim 1, wherein the magnetic flux density of the permanent magnet is higher on the inlet side of the water to be treated than on the outlet side of the water to be treated of the main body of the magnetic separator. . 3. A magnetic separator for separating a magnetic substance contained in water to be treated from the water to be treated by passing the water to be treated, wherein the water to be treated is opened at one end of a cylindrical magnetic separator main body. The water to be treated is supplied from the inlet, and the water to be treated is discharged from the water to be treated provided at the other end of the magnetic separation device main body. The permanent magnet is substantially coaxial with the magnetic separation device main body in the magnetic separation device main body. And a drain port for discharging the magnetic substance is provided at the other end of the magnetic separation device main body. 4. The magnetic separator according to claim 3, wherein the magnetic flux density of the permanent magnet is higher on the inlet side of the water to be treated than on the outlet side of the water to be treated of the main body of the magnetic separator. .