KR102491075B1 - Magnetic separation device using permanent magnet and filter structure thereof - Google Patents

Abstract

According to the present invention, a case portion open on both sides so that at least a portion of a mixture containing magnetic particles passes therethrough, a metal network structure assembled inside the case portion, and disposed adjacent to the metal network structure, and a magnetic field Disclosed is a magnetic separation device including a magnetic body assembly that separates the magnetic body particles from the mixture based on generating and a filter structure thereof.

Description

Magnetic separation device using permanent magnet and its filter structure

The present invention relates to a magnetic separation device using a magnet and a filter structure thereof.

A technology for separating magnetic particles from a mixture containing magnetic particles using a magnetic field generated by a magnet is used in various fields. Typical application examples are iron sorters, separators in the food sector, separators in the steelmaking sector, drug targeting in the medical sector, separators for magnetic particles in the air in the subway, and there are various other applications.

Representative magnetic separation devices using existing permanent magnets include a drum surface-attached sorter for sorting magnetic objects included in a mixture, a rotating permanent magnet sorter inside a cylinder, and a magnetic particle separator with permanent magnets attached to the surface of a porous magnetic material. there is. The drum surface-attached separator is a device in which the drum rotates and the permanent magnet attached to the surface sorts the magnetic substance of the mixture. Only the magnetic field of the drum surface is used and the fluid cannot pass through, so the separation effective area is small and the collection performance is low. It is not suitable for collecting magnetic particles inside. The bar magnet rotary sorter sorts the magnetic particles by putting the mixture in a cylinder container and inserting a bar magnet and turning it. It requires a device for rotation and cannot perform continuous processing, so the throughput is limited. there is. The porous magnetic separator with permanent magnets can be continuously applied to the fluid, but the flow rate is very limited due to the large pressure loss of the porous material and the low operating flow rate.

The problem to be solved according to an embodiment of the present invention is to devise a magnetic separation device using a permanent magnet with a high degree of inequality to maximize the magnetophoretic force, and to achieve filter capture rate, pressure loss, and saturated collection amount. and obtaining high performance at operating flow rates.

Other objects not specified in this specification may be additionally considered within the scope that can be easily inferred from the following detailed description and effects thereof.

In order to solve the above problems, a magnetic separation device using a permanent magnet according to an embodiment of the present invention is a case part with both sides open so that at least a part of a mixture containing magnetic particles passes through, assembled inside the case part and a metal network structure and a magnetic body assembly disposed adjacent to the metal network structure and separating the magnetic body particles from the mixture based on generating a magnetic field.

Here, the magnetic field has an uneven magnetic field distribution.

Here, the magnetic body assembly may include a plurality of magnets disposed spaced apart from each other and a metal core positioned between the magnets.

Here, the magnets may be any one or a combination of two or more of rare earth magnets (NdFeB, SmCo), Alnico magnets, and ferrite magnets (Ferrite).

Here, the metal core includes carbon steel and may be formed in a block shape.

Here, each of the magnets may have a magnetization direction parallel to or perpendicular to the direction in which the mixture passes, and the magnetization direction of each magnet may have a magnetization direction opposite to or the same as that of an adjacent magnet.

Here, the metal network structure includes a plurality of planar networks having a structure in which metal wires are intersectingly arranged, and one side of the plurality of planar networks is placed parallel to a direction in which the mixture passes, and the mixture passes through. It may be arranged spaced apart from each other perpendicular to the direction to be.

Here, the magnetic body assembly may include a first magnetic body assembly and a second magnetic body assembly, and the first magnetic body assembly and the second magnetic body assembly may be stacked in a direction in which the mixture passes.

A filter structure of a magnetic separation device using a permanent magnet according to another embodiment of the present invention is disposed adjacent to a metal network structure passing at least a part of a mixture including magnetic particles and the metal network structure, and a magnetic body assembly that separates the magnetic body particles from the mixture based on generating a field).

Here, the magnetic body assembly may include a plurality of magnets disposed spaced apart from each other and a metal core positioned between the magnets.

Here, the magnets may be any one or a combination of two or more of rare earth magnets (NdFeB, SmCo), Alnico magnets, and ferrite magnets (Ferrite).

Here, the metal core includes carbon steel and may be formed in a block shape.

Here, each of the magnets may have a magnetization direction parallel to or perpendicular to the direction in which the mixture passes, and the magnetization direction of each magnet may have a magnetization direction opposite to or the same as that of an adjacent magnet.

Here, the metal network structure includes a plurality of planar networks having a structure in which metal wires are intersectingly arranged, and one side of the plurality of planar networks is placed parallel to a direction in which the mixture passes, and the mixture passes through. It may be arranged spaced apart from each other perpendicular to the direction to be.

Here, the magnetic body assembly may include a first magnetic body assembly and a second magnetic body assembly, and the first magnetic body assembly and the second magnetic body assembly may be stacked in a direction in which the mixture passes.

As described above, according to the embodiments of the present invention, it is possible to obtain a high collection rate of magnetic particles even at a high flow rate by generating a magnetic field distribution of high unevenness.

In addition, since the fan load for generating flow can be reduced by lowering the pressure loss, power consumption and noise generation can be reduced.

In addition, the saturation collection amount at which the filter begins to be clogged can be increased by expanding the collection effective area.

In addition, magnetophoretic force increases due to the occurrence of a magnetic field distribution with a large degree of inequality, so that even magnetic particles included in a high flow rate can be collected.

Even if the effects are not explicitly mentioned here, the effects described in the following specification expected by the technical features of the present invention and their provisional effects are treated as described in the specification of the present invention.

1 and 2 are diagrams showing a magnetic separation device using a permanent magnet according to an embodiment of the present invention.
3 is a diagram illustrating a planar network of a magnetic separation device using permanent magnets according to an embodiment of the present invention as an example.
4 shows arrangement structures of permanent magnets applicable to various embodiments of the present invention.
5 and 6 show an arrangement structure of permanent magnets according to an embodiment of the present invention.
7 to 9 show magnetic field distribution analysis results according to the arrangement of permanent magnets applicable to various embodiments of the present invention and the application of magnetic materials.
10 is a diagram showing collection performance test results using a magnetic separation device using a permanent magnet according to an embodiment of the present invention.
11 is a diagram showing a dust collection test duct to which a magnetic separation device using a permanent magnet according to an embodiment of the present invention is applied as an example.

Hereinafter, a magnetic separation device using a permanent magnet and a filter structure thereof according to the present invention will be described in detail with reference to the drawings. However, the present invention may be embodied in many different forms and is not limited to the described embodiments. And, in order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals in the drawings indicate the same members.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be.

The suffixes "module" and "unit" for the components used in the following description are given or used interchangeably in consideration of only the ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

One embodiment of the present invention relates to a magnetic separation device using a permanent magnet and a filter structure thereof.

1 and 2 are diagrams showing a magnetic separation device using a permanent magnet according to an embodiment of the present invention.

1 is a configuration diagram showing a magnetic separation device 10 using permanent magnets according to an embodiment of the present invention.

Referring to FIG. 1 , a magnetic separation device 10 using a permanent magnet includes a case part 100 , a metal network structure 200 and a magnetic body assembly 300 .

The magnetic separation device 10 using a permanent magnet according to an embodiment of the present invention is a device for separating magnetic particles in a mixture containing magnetic particles.

The principle of separating magnetic particles from a mixture is to use the magnetic force acting on the magnetic particles under an unequal magnetic field, and this phenomenon is called magnetophoresis (MAP). The magnetophoretic force received by sphere-shaped magnetic particles in an unequal magnetic field is expressed by Equation 1.

Here, μ ₁ is the permeability of the space around the particle, μ ₂ is the permeability of the particle, R is the radius of the particle, and H is the magnetic field strength.

When material properties and size are given in the expression of magnetophoresis, the magnetophoretic force is proportional to ∇H ² , the right-hand end term. ∇H ² is the gradient of the square of the magnetic field strength and represents the spatial nonuniformity of the magnetic field. That is, no matter how great the magnetic field strength is, if the spatial distribution is uniform, no force acting on the magnetic particles is generated. On the other hand, even if the magnetic field strength is small, if the spatial inequality is large, a large force is generated. The magnetic separation device 10 using a permanent magnet according to an embodiment of the present invention has a high magnetic field strength and a high degree of unevenness, so that the magnetic particle collecting performance can be improved. Specifically, in order to achieve a high capture rate and a high operating flow rate, it is necessary to generate an unequal magnetic field to maximize the magnetophoretic force.

To this end, the magnetic separation device 10 using permanent magnets according to an embodiment of the present invention periodically arranges several small permanent magnets at regular intervals in a space to generate an uneven magnetic field in the space between the permanent magnets. . At this time, the space between the permanent magnets arranged at regular intervals is used as a passage for flow, enabling smooth flow, reducing pressure loss and increasing the saturation collection amount by securing a wide particle collection area.

Both sides of the case unit 100 are open so that at least a portion of the mixture containing the magnetic particles passes therethrough. The case part 100 serves to fix and support permanent magnets, iron cores, and wire nets that generate a magnetic field, and serves as a flow path for magnetic particle mixed fluid and an enclosure to protect the filter.

The case unit 100 may be made of a hard plastic material such as PC or PMMA.

The metal network structure 200 is assembled inside the case unit 100 .

The metal network structure 200 includes a plurality of planar networks 210, 220, 230, and 240 having a structure in which metal lines are intersectingly arranged. The metal wire includes a high permeability iron wire.

A plurality of planar nets (210, 220, 230, 240) are placed so that one surface is parallel to the direction in which the mixture passes, and are spaced apart from each other perpendicular to the direction in which the mixture passes.

Accordingly, the metal network structure 200 can serve to greatly increase the inequality of the air gap magnetic field generated by the magnet 310 and the metal core 320, and change the direction of the air gap between the stacked wire meshes to the flow direction. The increase in pressure loss can be minimized by inserting it in line with the

The magnetic body assembly 300 is disposed adjacent to the metal network structure and separates the magnetic body particles from the mixture based on generating a magnetic field.

Here, the magnetic field has an uneven magnetic field distribution. To this end, as shown in FIG. 5 below, in order to maximize the magnetophoretic force acting on the magnetic particles, permanent magnets are arranged in a structure with a high degree of inequality, so that a high collection rate and a high operating flow rate can be obtained.

The magnetic assembly 300 includes magnets 310 and a metal core 320 .

A plurality of magnets 310 are disposed spaced apart from each other.

Here, the magnets 310 may be any one or a combination of two or more of rare earth magnets (NdFeB, SmCo), Alnico magnets, and ferrite magnets.

The magnets 310 are permanent magnets and do not require a conductor coil and power supply for current supply compared to electromagnets, so they can be configured with a simple structure when manufacturing a magnetic separation filter and have the advantage of not consuming power.

Each of the magnets 310 has a magnetization direction parallel to or perpendicular to the direction in which the mixture passes, and the magnetization direction of each magnet has a magnetization direction opposite to or the same as that of an adjacent magnet.

A metal core 320 is positioned between the magnets. The metal core 320 includes a ferromagnetic material having high magnetic permeability, such as carbon steel, and is formed in a block shape.

The metal core 320 serves to increase magnetic flux generated by the permanent magnet by reducing the magnetic resistance of the permanent magnet magnetic circuit. Accordingly, there is an effect of reducing material cost according to the efficient use of the permanent magnet by reducing the demagnetization effect of the permanent magnet.

In the arrangement of the magnets 310, the ferromagnetic metal core 320 is inserted between the permanent magnets to reduce the magnetic resistance of the permanent magnet magnetic circuit and to enhance the strength of the generated magnetic field, thereby promoting efficient use of the permanent magnet and reducing the material cost of the permanent magnet. can be reduced

The ferromagnetic core, which is the metal core 320, is inserted into the space between the permanent magnets that do not overlap with the flow path to prevent an increase in pressure loss. In this way, when the permanent magnet and the ferromagnetic core are arranged in series in line with the flow direction, about 1/4 of the entire area is filled with the permanent magnet and the iron core when viewed from the front of the filter, and the remaining 3/4 area is secured as a flow passage. Since this flow passage is a straight open structure without clogging at the front and rear ends of the filter, the pressure loss is very small. In addition, since securing a flow passage in a wide area means that a sufficient particle saturated collection space is secured, the saturated collection amount increases.

In addition, a plurality of metal network structures 200 made of small-diameter ferromagnetic wires are disposed in the flow passage to make the magnetic field distribution of the previously secured flow passage more uneven. This distorts the magnetic field distribution by the permanent magnet and the ferromagnetic core, greatly increasing the degree of magnetic field inequality. The magnetic field generated at this time is the sum of the permanent magnet and ferromagnetic core and the magnetization of the wire. In particular, since the distorted magnetic field due to the magnetization of the ferromagnetic wire is mainly generated around the wire, the unevenness of the magnetic field distribution is very high, contributing greatly to the increase of the magnetophoretic force. That is, a plurality of permanent magnets and iron cores are arranged at regular intervals to generate an unequal magnetic field, and a wire mesh is added to the flow path, which is the area where the unequal magnetic field is generated, to significantly increase the unequal degree of the magnetic field. As a method for easily arranging a plurality of ferromagnetic iron wires in the fluid passage, flat iron meshes 210, 220, 230, 240 made of small diameter iron wires are stacked in several layers and inserted into the fluid passage. During lamination, the laminated wire mesh is manufactured while maintaining a constant air gap between the flat wire meshes, and when the flow passage is inserted, the direction of the air gap of the laminated wire mesh coincides with the direction of flow to minimize the increase in pressure loss caused by the wire mesh.

2 is a front view (a), a side view (b), and a plan view (c) showing a magnetic separation device 10 using a permanent magnet according to an embodiment of the present invention.

Referring to the side view (b) and the plan view (c) of FIG. 2 , the magnetic body assembly 300 includes a first magnetic body assembly and a second magnetic body assembly, through which the mixture passes. are stacked in the direction of

In the magnetic separation device 10 using permanent magnets according to an embodiment of the present invention, it is possible to efficiently collect magnetic particles by arranging permanent magnets to generate a highly uneven magnetic field. In addition, the filter structure of the magnetic separation device 10 is configured to have a flow passage through which a mixture containing magnetic particles can smoothly pass, thereby increasing the filter's processing capacity. At this time, the size and position of the permanent magnet, the iron core, and the wire mesh can be properly determined and designed so that a magnetic field with a large degree of unevenness can be formed in the flow path.

3 is a diagram illustrating a planar network of a magnetic separation device using permanent magnets according to an embodiment of the present invention as an example.

The metal network structure 200 of the magnetic separation device using a permanent magnet according to an embodiment of the present invention includes a plurality of planar networks 210 having a structure in which metal wires 211 are alternately arranged, and the plurality of planar networks , One side is placed so that one side is parallel to the direction in which the mixture passes, and is spaced apart from each other perpendicular to the direction in which the mixture passes.

As a method for easily arranging a plurality of ferromagnetic iron wires in the fluid passage, flat iron meshes 210, 220, 230, 240 made of small diameter iron wires are stacked in several layers and inserted into the fluid passage. During lamination, the laminated wire mesh is manufactured while maintaining a constant air gap between the flat wire meshes, and when the flow passage is inserted, the increase in pressure loss due to the wire mesh can be minimized by inserting the laminated wire mesh so that the direction of the air gap coincides with the direction of flow.

The mesh size of the wire mesh can be selected in the range of 4 to 20 mesh in consideration of the magnetic field distribution of the flow passage and the pore size of the laminated wire mesh, and the wire diameter of the wire mesh can be selected in the range of 0.2 to 2 mm.

4 shows arrangement structures of permanent magnets applicable to various embodiments of the present invention.

When the permanent magnets are periodically arranged, the magnetization direction of each permanent magnet is appropriately arranged so that the magnetic field strength is large and the inequality is large. To this end, as shown in FIG. 4 and FIG. 5, 5 types of directional arrangements of permanent magnets applicable to various embodiments of the present invention may be used. In addition, various arrangements may be possible according to the magnetization direction of the permanent magnets and the distance between the permanent magnets.

In the arrangement structure shown in FIGS. 4 and 5, a plurality of small-sized permanent magnets are periodically arranged at appropriate distances from each other, and the magnetic field non-uniformity can be increased. The smaller the size of the permanent magnet and the larger the number, the higher the magnetic field inequality. However, if the size is too small, a precision process is required and the manufacturing process is complicated, which increases the manufacturing cost. .

In addition, a metal core 320 is inserted between the left and right permanent magnets 310 to increase magnetic field generation. The metal core 320 inserted between the magnets 310 is inserted on the left and right sides of the permanent magnets so as not to increase the pressure loss due to the obstruction to the flow.

Figure 4 (a) is arranged in the up-down-up-down direction.

Figure 4 (b) is arranged in the up-up-up-up direction.

(c) of FIG. 4 is arranged in the up-down-down-up direction.

(d) of FIG. 4 is arranged in the reverse Halbach direction.

5 is arranged in the Halbach direction.

The flow direction size ratio of the permanent magnet 310 and the iron core 320 is basically 1:1, but only permanent magnets may be used or the permanent magnets may be minimized depending on the need for generating a magnetic field. The applicable ratio can be selected within the range of 1:0 to 1:10.

By inserting a laminated iron mesh into the flow passage, the magnetic field inequality can be significantly increased, thereby significantly increasing the particle trapping force.

As shown in FIG. 4 and FIG. 5 below, the permanent magnet arrangement drawings are all 4×4 structures, but can be changed to any number of n×m structures according to the size of the required application.

In addition, the permanent magnet arrangement diagram is shown as one layer on the side, but the total number of layers can be changed according to the needs of the application, and the magnet arrangement direction of adjacent layers can be stirred or arranged in the same direction, and the spacing between adjacent layers is basically permanent magnet It is the same as the width, but can be adjusted according to the need for magnetic field generation.

Table 1 compares the average magnetic field non-uniformity of the arrangement of permanent magnets shown in FIG. 4 and FIG. 5 below. This is a comparison of the magnetic field non-uniformity according to the arrangement of permanent magnets when all permanent magnets, iron cores, and wire meshes are present and when the applied material and size are the same. It can be seen that the magnetic field non-uniformity of magnet arrangement 4 (Halbach) shown in Fig. 5 is the highest.

Accordingly, in FIGS. 5 and 6 below, the arrangement structure of permanent magnets according to an embodiment of the present invention will be described using a structure arranged in the Halbach direction.

5 and 6 show an arrangement structure of permanent magnets according to an embodiment of the present invention.

Referring to FIG. 5 , the magnet arrangement viewed from the side crosses the direction of the permanent magnets on the left and right two layers, and the magnet arrangement viewed from the top surface crosses the direction of the permanent magnets on the second floor.

In addition, referring to FIG. 6, the arrangement of magnets seen from the front is arranged in a 4×4 direction of permanent magnets.

That is, each of the magnets 310 has a magnetization direction parallel to or perpendicular to the direction in which the mixture passes, and the magnetization direction of each magnet has a magnetization direction opposite to or the same as that of an adjacent magnet.

7 to 9 show magnetic field distribution analysis results according to the arrangement of permanent magnets applicable to various embodiments of the present invention and the application of magnetic materials.

7 to 9 quantitatively analyze and compare the performance of the effect of using the iron core and wire mesh of the magnet arrangement shown in FIG. 4 and FIG. 5 through computer simulation of electromagnetic field numerical analysis (static magnetic field finite element analysis) .

Here, the analysis target through the electromagnetic field numerical analysis is the magnetic field inequality that determines the magnetic particle trapping power. Strict magnetic field distribution analysis for the proposed magnet arrangement requires a three-dimensional magnetic field analysis, but an alternative performance prediction is possible with a two-dimensional analysis for the effect analysis of the iron core and wire mesh.

Since the arrangement of permanent magnets and magnetic materials of the actually applied magnetic separation device is three-dimensional, the magnetic field distribution is also three-dimensional, resulting in a greater degree of magnetic field inequality than the two-dimensional analysis result. Therefore, the collection force of the actual magnetic separation device is higher than the 2D analysis result.

7 is an analysis result of the effect of the iron core and the wire mesh in the magnet arrangement 1 model according to FIG. 4 (a).

Figure 7 (a) shows the magnetic field distribution when there is only a permanent magnet without an iron core and wire mesh, and the average magnetic field inequality analysis result of the flow passage by the magnetic field distribution is 43.7 [T^2/m].

7(b) is the magnetic field distribution when there are only permanent magnets and iron cores without wire mesh, and the average magnetic field inequality analysis result of the flow path by the magnetic field distribution is 86.8 [T^2/m]. It can be seen that the average magnetic field inequality is also increased by 1.9 times compared to the case of FIG. 7 (a).

7(c) is the magnetic field distribution when the permanent magnet, the iron core, and the wire mesh are all present, and the average magnetic field inequality analysis result of the flow passage by the magnetic field distribution is 34,935.4 [T^2/m].

It can be seen that the average magnetic field inequality is also increased by 799.4 times compared to the case of (a) of FIG. 7, and the average magnetic field inequality is also increased by 402.4 times compared to the case of (b) of FIG.

8 is an analysis result of the effect of the iron core and the wire mesh in the magnet arrangement 2 model according to FIG. 4 (b).

Figure 8 (a) shows the magnetic field distribution when there are only permanent magnets and iron cores without wire mesh, and the average magnetic field inequality analysis result of the flow path by the magnetic field distribution is 86.2 [T^2/m].

8(b) shows the magnetic field distribution when the permanent magnet, iron core, and wire mesh are all present, and the result of analyzing the average magnetic field inequality of the flow passage by the magnetic field distribution is 35,506.5 [T^2/m].

It can be confirmed that the average magnetic field inequality is also increased by 411.9 times compared to the case of FIG. 8 (a).

9 is an analysis result of the effect of an iron core and a wire mesh in the magnet arrangement model according to FIG. 5 .

Figure 9 (a) shows the magnetic field distribution when there are only permanent magnets and iron cores without wire mesh, and the average magnetophoretic force in the flow path is 57.5 [T^2/m].

9(b) shows the magnetic field distribution when the permanent magnet, iron core, and wire mesh are all present, and the result of analyzing the average magnetic field inequality of the flow passage by the magnetic field distribution is 39,125.0 [T^2/m].

It can be confirmed that the average magnetic field inequality is also increased by 680.4 times compared to the case of FIG. 9 (a).

In addition, when confirming the effect of changing the thickness of the wire mesh wire in the magnet arrangement model according to FIG. 5, as a result of analyzing the change in magnetophoretic force according to the radius of the wire, the radius of the wire decreased from 0.25 mm to 0.15 mm, and the number of layers of the flat wire mesh was 1.6 It can be confirmed that the magnetophoretic force increases 1.53 times as the fold increases, and it can be confirmed that the smaller the radius of the wire mesh and the larger the number of layers, the higher the particle trapping power due to the increase in magnetic field non-uniformity.

In addition, when checking the change in magnetophoretic force and the effect of the filter length in the direction of flow according to the permanent magnet material, using a rare earth magnet (NdFeB magnet-residual magnetic flux density 1.2 tesla) compared to a ferrite magnet (residual magnetic flux density 0.3 tesla) average magnetophoretic force is increased by about 16 times, and accordingly, it can be confirmed that the minimum flow direction filter length required for collection is reduced by about 1/4.

10 is a diagram showing collection performance test results using a magnetic separation device using a permanent magnet according to an embodiment of the present invention.

As shown in FIG. 11 below, in the collection performance test, the magnetic filter is placed in a duct and erected vertically, and then a large amount of magnetic particles are dropped from 50 cm above the filter inlet to observe the collection state of the particles. The magnetic particles used in the test are magnetic iron oxide particles with a diameter of 1 to 10 μm.

Although the free-falling magnetic particles reached the inlet at a relatively high speed of about 2.5 m/s, almost all of the magnetic particles were collected near the inlet.

As can be seen in the comparison picture of the inlet and outlet, magnetic particles were only observed near the inlet and could not be found on the outlet side.

Through this, it is estimated that the magnetic particle capture rate of the filter of the magnetic separation device using the permanent magnet according to an embodiment of the present invention reaches 100% at a flow rate of 2.5 m/s. This coincides with the results of the particle motion analysis using the average magnetophoresis by the unequal magnetic field obtained through the magnetic field distribution analysis.

10, it can be confirmed that the magnetic material is collected in the inlet.

11 is a diagram showing a dust collection test duct to which a magnetic separation device using a permanent magnet according to an embodiment of the present invention is applied as an example.

As shown in FIG. 11 , the magnetic separation device 10 using a permanent magnet can be placed in the duct 30 and used upright.

At the top, a plastic mesh for supplying particles is located, and at the bottom, a magnetic filter is located. Accordingly, the magnetic separation device is placed on the ground, and the filter faces upward.

In general, filter performance is expressed based on four performance indicators: capture rate, pressure loss, saturated capture amount, and operating flow rate. The capture rate is calculated by measuring the amount of particles at the outlet against the amount of particles at the input at the front of the filter, and the pressure loss is obtained by measuring the difference in pressure between the front and rear ends of the filter when the fluid passes. The saturation capture amount is the maximum particle capture amount that requires filter replacement and particle removal after the filter starts clogging due to the accumulation of collected particles, and the operating flow rate is the flow rate at which a certain level of capture rate is maintained.

A magnetic separation device using a permanent magnet according to an embodiment of the present invention may satisfy the performance index.

The magnetic separation device 10 using a permanent magnet according to an embodiment of the present invention improves the processing capacity per unit volume, so it can be designed to reduce the size of the filter, and can be manufactured with easily available inexpensive materials, thereby reducing the manufacturing cost. can be reduced In addition, the use of permanent magnets may make power consumption and power supply unnecessary.

In addition, since the filter can be reused after being removed when particles are saturated, it has a semi-permanent lifespan and can reduce the emission of harmful substances and wastes such as ozone/electromagnetic waves/waste plastic.

The above description is just one embodiment of the present invention, and those skilled in the art can implement it in a modified form without departing from the essential characteristics of the present invention. Therefore, the scope of the present invention should be construed to include various embodiments within the scope equivalent to those described in the claims without being limited to the above-described embodiments.

10: magnetic separation device using a permanent magnet
100: case part
200: metal network structure
300: magnetic body assembly

Claims (15)

a case portion with both sides open so that at least a portion of the mixture containing the magnetic particles passes therethrough;
A metal network structure assembled inside the case portion; and
A magnetic body assembly disposed adjacent to the metal network structure and configured to separate the magnetic body particles from the mixture based on generating a magnetic field;
The metal network structure includes a plurality of planar networks placed so that one surface is parallel to a first direction, which is a direction in which the mixture passes, and spaced apart from each other along a second direction perpendicular to the first direction,
The magnetic separation device of claim 1 , wherein a plurality of magnetic body assemblies are disposed on a first plane including a side disposed on a side where the mixture is introduced for each plane network. According to claim 1,
The magnetic field has an unequal magnetic field distribution. According to claim 1,
The magnetic body assembly,
A plurality of magnets disposed spaced apart from each other; and
A magnetic separation device comprising a; metal core positioned between the magnets. According to claim 3,
The magnets,
Any one or a combination of two or more of rare earth magnets, Alnico magnets, and ferrite magnets,
The rare earth magnet includes at least one of NdFeB and SmCo. According to claim 3,
The metal core,
A magnetic separation device comprising carbon steel and formed in a block shape. According to claim 3,
Each of the magnets has a magnetization direction parallel to or perpendicular to the direction in which the mixture passes, and the magnetization direction of each magnet has a magnetization direction opposite to or the same as that of an adjacent magnet. According to claim 1,
The plurality of planar networks,
A magnetic separation device having a structure in which metal wires are alternately arranged so as to increase the non-uniformity of the magnetic field. According to claim 3,
The magnetic body assembly includes a first magnetic body assembly and a second magnetic body assembly,
The first magnetic body assembly and the second magnetic body assembly are stacked on the first plane and a second plane facing the first plane along the first direction. In the filter structure of the magnetic separation device,
a metal network structure through which at least a portion of a mixture containing magnetic particles passes; and
A magnetic body assembly disposed adjacent to the metal network structure and configured to separate the magnetic body particles from the mixture based on generating a magnetic field;
The metal network structure includes a plurality of planar networks disposed so that one surface is parallel to a first direction, which is a direction in which the mixture passes, and spaced apart from each other along a second direction perpendicular to the first direction,
The filter structure of the magnetic separation device in which a plurality of magnetic body assemblies are disposed on a first plane including a side placed on a side where the mixture is introduced for each plane network. According to claim 9,
The magnetic body assembly,
A plurality of magnets disposed spaced apart from each other; and
A filter structure of a magnetic separation device comprising a; metal core positioned between the magnets. According to claim 10,
The magnets,
Any one or a combination of two or more of rare earth magnets, Alnico magnets, and ferrite magnets,
The rare earth magnet is a filter structure of a magnetic separation device comprising at least one of NdFeB and SmCo. According to claim 10,
The metal core,
A filter structure of a magnetic separator comprising carbon steel and formed in a block shape. According to claim 10,
Each of the magnets has a magnetization direction parallel to or perpendicular to the direction in which the mixture passes, and the magnetization direction of each magnet has a magnetization direction opposite to or the same as that of an adjacent magnet. According to claim 9,
The plurality of planar networks,
A filter structure of a magnetic separation device having a structure in which metal wires are alternately arranged so that the non-uniformity of the magnetic field is increased. According to claim 10,
The magnetic body assembly includes a first magnetic body assembly and a second magnetic body assembly,
The first magnetic body assembly and the second magnetic body assembly are laminated on the first plane and a second plane facing the first plane along the first direction.

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