JPH09141018A - Wet process magnetic sorter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for electromagnets and cooling fans so as to reduce an equipment cost and to eliminate the need for electric power to excite magnetic materials so as to reduce a running cost by moving permanent magnets by an air cylinder to attract magnetically attractable materials to the magnetic materials or to release the attraction. SOLUTION: When a rod 25a of an air cylinder 25a is withdrawn, the magnetic poles of the permanent magnets 28 are arranged to the excitation positions (a) on both flanks of the cylindrical body 12 along a sliding rod 23 and a series of closed magnetic circuits are formed between both permanent magnets 28, a moving member 29 and a cylindrical body 12. As a result, iron balls 15 housed in the cylindrical body 12 are strongly executed from outside and the magnetically attractable materials contained in raw material liquid are attracted in a large amt. on the iron balls 15 and are removed. At the time of backward washing the magnetically attractable materials attracted on the iron balls 15, the rod 25a of the cylinder 25 is projected to move the permanent magnets 28 to retreat positions (b). The excitation state of the iron balls 15 is then released and the magnetically attratable materials are easily desorbed from the surfaces of the iron balls 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet-type magnetic separator, and more particularly, to a magnetic body in a cylinder which is energized by applying a magnetic field from the outside, and adsorbs and removes a magnetic substance in a raw material. The present invention relates to a wet magnetic separator.

[0002]

2. Description of the Related Art A conventional wet magnetic separator employs a large number of iron balls housed in a cylindrical body as described in Japanese Patent Publication No. Sho. Is wound, an electromagnet is provided, the coil is energized to excite the iron ball from the outside, and then the raw material liquid is supplied from above, whereby the magnetic substance in the liquid is adsorbed to the iron ball and removed. When the adsorption of the magnetic substance has progressed, the supply of the raw material liquid is stopped, the cleaning liquid is supplied from the upper part to remove the raw material liquid, and after the energization of the coil is stopped, the cleaning is performed from the lower part of the cylindrical body. Water is supplied to wash the iron balls, so that the adsorbed magnetic substance is removed from the upper part of the cylindrical body.

[0003]

However, in the wet-type magnetic separator described in the above-mentioned publication, it is necessary to continue energization during use, and since the coil generates heat due to continuation of energization, a fan for cooling the coil is required. Required and consumes a lot of power. Further, in the wet-type magnetic separator described in the above publication, an electromagnet was used, which was energized to excite the internal iron ball, and further de-energized the coil of the electromagnet to release the excitation of the iron ball. If the raw material liquid is extremely volatile, there is a risk of ignition due to sparks caused by turning on and off the coil, so that an explosion-proof structure must be provided. The present invention has been made in view of the above circumstances and does not require an expensive electromagnet having an airtight explosion-proof structure or a cooling fan to reduce facility costs, and does not require electric power for exciting a magnetic body housed in a cylinder. Therefore, it is an object of the present invention to provide a wet magnetic separator capable of reducing running costs.

[0004]

According to the present invention, there is provided a semiconductor device comprising:
The wet magnetic separator described is filled with a magnetic material made of a material having a small residual magnetism with a gap inside, a raw material supply port in the upper part, and a product discharge port in the lower part. The cylindrical body made of a material, the permanent magnets which are arranged to oppose each other at different excitation positions on both sides of the cylindrical body when used, and which excite the magnetic body from the outside, and the opposing permanent magnets are There is provided an advancing / retreating means capable of releasing the excited state of the magnetic body in the cylindrical body by separating from the excited position to the outer retracted position. The material having a small remanence is a material such as soft iron that does not act as a magnet when the excitation is released. The wet magnetic force separator according to claim 2 is the wet magnetic force separator according to claim 1, wherein the cylindrical body has parallel side surfaces facing each other at the excitation position, The direction in which the permanent magnet is separated from the cylindrical body is a direction intersecting with the facing direction of the permanent magnet.

A wet magnetic force sorter according to a third aspect is the wet magnetic force sorter according to the first or second aspect, wherein the magnetic body is an iron ball, and an iron ball charging port is provided at an upper end of the cylindrical body. Is connected to the upper connection pipe, and the raw material supply port and the backwash water discharge port for discharging the backwash water containing the magnetic substance at the time of the backwash are arranged on the side of the upper connection pipe. And a tapered lower connecting pipe is connected to the lower portion of the tubular body,
The product discharge port and the backwash water supply port are disposed below the lower connecting pipe. The wet magnetic force sorter according to claim 4 is the wet magnetic force sorter according to claim 2 or 3,
The permanent magnets are arranged with opposite magnetic poles at both ends of a moving member made of a C-shaped magnetic body in plan view. When exciting the magnetic body, the permanent magnets are parallel to the cylindrical body. These side surfaces are arranged so as to sandwich them, and the advancing / retreating means is a cylinder. Here, the C-shape of the moving member is not limited to the C-shape in a strict sense, but includes a substantially C-shape. The wet magnetic force sorter according to claim 5 is the wet magnetic force sorter according to claim 4, wherein each of the permanent magnets adheres a plurality of magnet pieces to match the polarities of the facing surfaces of the respective permanent magnets. They are stacked. A wet magnetic force sorter according to claim 6 is the wet magnetic force sorter according to any one of claims 1 to 5, wherein the tubular body filled with the magnetic material is moved not only to the excitation position but also to the retracted position. It is also arranged at a position so that the magnetic material of one of the cylindrical bodies can be adsorbed and removed by flowing the raw material into the other cylindrical body while cleaning the magnetic body.

[0006]

In the wet magnetic force sorter according to any one of claims 1 to 6, when the advancing / retreating means moves the permanent magnets to the excitation positions on both sides of the cylinder, the magnetic body inside the cylinder is excited from the outside,
By supplying the raw material liquid from the raw material supply port into the cylinder in this state, the magnetic substance in the raw material liquid is adsorbed by the magnetic substance and removed, and then discharged from the product discharge port. At the time of cleaning, when the permanent magnet is moved to the retracted position outside the cylindrical body by the advancing / retreating means, the magnetic body in the cylindrical body is removed from the magnetic field of the permanent magnet, and the attracted state of the magnetically attached matter from the magnetic body is released. .
Thereafter, for example, by supplying washing water into the cylinder from the raw material supply port, the magnetic substance attached to the surface of the magnetic body is washed away by the force of the washing water, and is discharged out of the cylinder. Further, in the wet magnetic force sorter according to the second aspect of the present invention, during cleaning, when the advancing / retreating means applies a lateral force to the permanent magnet, that is, a force in a direction intersecting the opposing direction of the permanent magnet, The permanent magnets move gradually in the same direction, which reduces the number of magnetic lines of force connected between the magnetic poles, so that the permanent magnet can move laterally with a relatively small force.

In the wet magnetic force sorter according to claim 3,
When the iron ball introduced from the iron ball inlet of the upper connecting pipe is excited by arranging the permanent magnet at the excitation position, the magnetized substance in the raw material liquid flowing from the raw material inlet is adsorbed on the surface of the iron ball. During backwashing, the permanent magnet is moved to the retracted position outside the cylinder by the advancing / retreating means, and the backwash water is made to flow from the backwash water supply port. The washing water is blown into the cylindrical body to backwash the magnetic substance adhered to the iron ball, and is discharged from the backwash water discharge port as it is. In the wet magnetic force sorter according to claim 4, a moving member is moved by a cylinder, and a permanent magnet whose magnetic poles are opposite to each other is provided.
If the moving member is a magnetic body when it is arranged at the excitation position so as to be sandwiched from the outside with respect to the parallel parallel side surfaces of the cylindrical body,
A series of magnetic circuits, which are a permanent magnet and a cylinder sandwiched between the permanent magnets, which are arranged opposite to each other at both ends of the moving member, are closed, and a large exciting force is generated in the cylinder.

In the wet magnetic force sorter according to the fifth aspect, when a permanent magnet having an iron piece sandwiched between a plurality of magnet pieces is arranged at an exciting position, the permanent magnet is converted into, for example, a general single plate magnet. Since a larger magnetic force can be obtained, the excitation of the magnetic material becomes stronger and many magnetic substances can be firmly adsorbed. In the wet magnetic force sorter according to claim 6, for example, when the cleaning of the magnetic body on the excitation position side is started, the advancing / retreating means
When the permanent magnet is moved to the retracted position, the permanent magnet excites the magnetic body filled in the cylindrical body at the retracted position. In this state, the magnetic body is washed in the cylinder on the one excitation position side, and the magnetic force of the magnetic substance in the raw material liquid is selected in the cylinder on the other retreat position side. Thereafter, when cleaning the magnetic body at the retracted position side, the permanent magnet is moved to the excitation position by the advancing / retracting means, and by exchanging each work process, cleaning is performed in one cylinder and in the other cylinder. Magnetic sorting is performed.

[0009]

In the wet magnetic force sorter according to the first to sixth aspects of the invention, the advancing / retreating means moves the permanent magnet between the exciting position and the retreating position of the magnetic body in the cylindrical body to make the magnetic body. Since the magnetic substance in the raw material liquid is adsorbed and desorbed, the need for an electromagnet with an airtight explosion-proof structure and a cooling fan is eliminated, and equipment costs can be reduced, and the power to excite the magnetic substance housed in the cylinder is reduced. Is unnecessary and running cost can be reduced. Particularly, in the wet magnetic force sorter according to claim 2, when the magnetic material is washed in this manner,
Since the paired permanent magnets are laterally moved in the direction intersecting with the facing direction, the facing permanent magnets can easily escape from the magnetic field created by the facing permanent magnets, and the moving means, which is the drive unit, can move relatively easily. Even if a small output is used, the permanent magnet can be easily separated from the magnetic body.

In the wet magnetic force sorter according to the third aspect of the present invention, during the backwashing, the backwashing water whose flow rate is increased by the tapered lower connecting pipe is blown into the cylindrical body and adhered to the surface of the iron ball. Since the magnetic substance is backwashed, the attached magnetic substance can be washed well. In the wet magnetic force sorter according to claim 4, the cylinder is adopted as the advancing / retreating means, and the C-shaped moving member in plan view having the permanent magnet is connected to the cylindrical body through the cylinder. Since it is moved with respect to the side surface, it can be attracted with a larger force than, for example, a cylindrical tubular body, and the magnetic body in the tubular body can be excited more greatly. Here, when the cylinder is an air cylinder, the output is small and relatively inexpensive as compared with other driving means such as a hydraulic cylinder, and, as with an electric cylinder, for example, the raw material liquid is volatile. When a high object is used, there is no danger of ignition due to sparks or explosion due to electrical contact. Further, in the wet magnetic force sorter according to claim 5, since a permanent magnet having an iron piece sandwiched between a plurality of magnet pieces is adopted, when the permanent magnet is arranged at an excitation position, it is compared with a single plate magnet. As a result, a large magnetic force is obtained, which makes the excitation of the magnetic material strong, and more magnetic substances can be firmly adsorbed. In the wet magnetic force sorter according to claim 6, the cylindrical body filled with the magnetic material is arranged not only in the exciting position but also in the retracted position, and while the magnetic material of one cylindrical body is being washed, the other cylindrical body is being cleaned. Since the raw material is flown through the body to remove the magnetic substance by adsorption, the magnetic substance can be efficiently absorbed and removed.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to the attached drawings, an embodiment in which the present invention is embodied will be described to provide an understanding of the present invention. Here, FIG. 1 is a side view of a wet magnetic separator according to a first embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a schematic enlarged plan view of a permanent magnet, and FIG. 5 is a side view of the wet magnetic separator according to the second embodiment, FIG.
FIG. 2 is a schematic enlarged plan view of the permanent magnet. First, FIGS.
The wet magnetic force sorter 10 according to the first embodiment of the present invention will be described with reference to FIG.

As shown in FIGS. 1 and 2, a wet magnetic force sorter 10 according to a first embodiment has a vertically long rectangular tubular body made of non-magnetic stainless steel near a central portion of an upper portion of a gantry 11. An upper connecting pipe 13 and a tapered lower connecting pipe 14 are connected to the openings 12a and 12b at the upper and lower ends of the cylindrical body 12, respectively. At the upper end of the upper connecting pipe 13, an inlet 13a of an iron ball 15 which is an example of a magnetic material made of a material having a small residual magnetism is formed, and the air pinch valve 1 is provided on each of the opposite side surfaces of the upper connecting pipe 13.
The raw material supply port 16 and the backwash water discharge port 17 are communicated with each other through 6a and 17a. Further, an iron ball outlet 18 that is normally closed is provided on one side surface of the lower portion of the cylindrical body 12, and air pinch valves 19a and 20a are provided at opposing positions on the peripheral side surface of the lower connecting pipe 14, respectively. The product discharge port 19 and the backwash water supply port 20 are connected via the. Also,
A terminal box 21 for control is provided on one side surface of the gantry 11, and a pair of rectangular mounting plates 22 is arranged on both ends of the gantry 11 so as to face each other. Four long slide rods 23 are horizontally mounted between the facing corners.

As shown in FIGS. 1 and 3, the iron balls 15 are externally arranged on the four slide rods 23 by using different magnetic poles on both sides of the excitation position a of the cylindrical body 12 when in use. A permanent magnet structure 24 that is excited by the magnet is provided slidably. The permanent magnet structure 24 is moved in and out of a rod 25a of an air cylinder 25, which is an example of advancing and retracting means fixed to the central portion of the outer surface of one of the mounting plates 22, so that the permanent magnet 28 is laterally moved in the direction orthogonal to the facing direction of the permanent magnet 28. Slide in the direction. The permanent magnet structure 24 includes a permanent magnet 28 in which six iron pieces 26 are sandwiched between five thick plate-shaped magnet pieces 27.
Are fixed to the cylindrical opposing surfaces of both ends of a substantially C-shaped (strictly square C-shaped) moving member 29 made of magnetic material such as iron or ferrite, and the side plates 3 at both ends of the moving member 29 are fixed.
The four through-holes formed in the four corners 0 and 31 are made loosely inserted into the slide rods 23 so that they can be moved laterally. The magnet pieces 27 constituting the pair of permanent magnets 28 are stacked so that one polarity of the surface facing the parallel surface of the cylindrical body 12 is S and the other polarity is N. When the rod 25a of the air cylinder 25 is moved in and out, the permanent magnet structure 24 moves in the direction of the arrow, whereby the permanent magnets 28 which are opposed to each other on the flat side surfaces of the cylindrical body 12 with a slight gap therebetween are provided. The magnetic pole moves laterally between an excitation position a shown by a solid line in FIG. 3 and a retracted position b shown by a two-dot chain line in FIG. The terminal box 21 is provided with terminals connected to an air cylinder 25 and solenoid valves (not shown) that operate the air pinch valves 16a, 17a, 19a, 20a.

Next, the operation of the wet magnetic force sorter 10 according to the first embodiment of the present invention will be described. As shown in FIG. 1, when the rod 25 a of the air cylinder 25 is retracted, the magnetic poles of the permanent magnet 28 are arranged along the slide rod 23 at the excitation positions a on both side surfaces of the cylinder 12. At this time, since the moving member 29 is a magnetic material, the two permanent magnets 2
8. A series of magnetic closed circuits are formed between the moving member 29 and the cylindrical body 12, whereby the iron balls 15 housed in the cylindrical body 12 are strongly excited from the outside, and the magnetic substance contained in the raw material liquid is Is adsorbed and removed by these iron balls 15 in large quantities.
The raw material liquid from which the magnetic deposit has been removed is discharged from a product discharge port 19 connected to the lower connecting pipe 14. When the magnetic substance adsorbed on the iron ball 15 is backwashed, when the rod 25a of the air cylinder 25 is protruded to move the permanent magnet 28 to the retracted position b, the permanent magnet 28 moves in a direction substantially perpendicular to the magnetic force lines. However, since the number of lines of magnetic force between the magnetic poles decreases,
The permanent magnet 28 is laterally moved with a relatively small force to
By releasing the excitation state of No. 5, the magnetic substance can be easily separated from the surface of the iron ball 15. Thereafter, the backwash water is supplied from the lower backwash water supply port 20 into the cylinder 12 disposed above, so that the magnetically attached matter attached to the surface of the iron ball 15 is washed away by water pressure, and the upper part of the upper surface is washed. It is discharged from the backwash water discharge port 17.

In this way, the magnetic pole of the permanent magnet 28 is moved between the exciting position a and the retreat position b of the iron ball 15 in the cylindrical body 12 by the air cylinder 25 so that the iron ball 15 contains the raw material liquid. As it attracts and desorbs magnetic substances,
The airtight explosion-proof electromagnet and the cooling fan described in the section of the prior art are not required, so that the equipment cost can be reduced. Further, the power for exciting the iron ball 15 housed in the cylinder 12 is not required, and the running cost is reduced. Can be reduced. Also, at the time of washing,
When a force in the lateral direction, that is, a force in a direction orthogonal to the facing direction of the permanent magnet 28 is applied to the permanent magnet 28 by the air cylinder 25, the permanent magnet 28 gradually moves in the same direction, and the line of magnetic force between the magnetic poles Of permanent magnets 2
8 can be moved laterally with a relatively small force. Therefore, even if the air cylinder 25 of the drive unit is of a relatively low output, the magnetic substance can be easily separated from the iron ball 15 and the apparatus can be easily moved. Downsizing and equipment costs can be reduced.

Further, as the permanent magnet 28, the one in which the iron piece 26 is sandwiched between the plurality of magnet pieces 27 which are laminated with the polarities of the parallel planes facing each other on both side surfaces of the cylindrical body 12 is adopted. When the permanent magnet 28 is arranged at the excitation position a of the iron ball 15, since it is easy to obtain a strong magnet for each magnet, a large magnetic force can be obtained as compared with a general single plate magnet, and thus, the iron ball 15 can be obtained. Excitation becomes stronger, and more magnetic substances can be firmly adsorbed. Since the air cylinder 25 is used as the reciprocating means, the apparatus can be reduced in size and is relatively inexpensive as compared with other driving means such as a hydraulic cylinder, so that the cost can be reduced. There is no danger of ignition or explosion due to sparks at the electrical connection points when using high-potential objects. In addition, the cylinder is employed as the reciprocating means, and the moving member 29 having the permanent magnet 28 and having a substantially C-shape in plan view is moved with respect to the parallel side surface of the cylindrical body 12 having a rectangular cross section. Therefore, for example, compared with a cylindrical cylinder, the range in which adsorption can be performed with a large adsorption force is wide, and the iron ball 15
Can be more strongly excited.

Next, a wet magnetic force separator 40 according to a second embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 4 and 5, in the wet magnetic force sorter 40 according to the second embodiment, the cylindrical body 12 filled with the iron balls 15 is arranged not only in the excitation position a but also in the retracted position b. , One cylinder 1
While the iron ball 15 of No. 2 is being washed, the raw material is flown into the other cylindrical body 12 to adsorb and remove the magnetic substance, thereby efficiently adsorbing and removing the magnetic substance. In FIG.
Reference numerals a and 18b denote iron ball take-out ports. Other configurations and operations are the same as those of the wet magnetic separator 10 according to the first embodiment.
The description is omitted because it is the same as or can be estimated.

The present invention has been described above with reference to the drawings. However, the present invention is not limited to this embodiment, and even if there are design changes and the like within the scope of the invention, the present invention is included. . For example, in the embodiment, as the permanent magnet, a stack in which iron pieces are sandwiched between a plurality of magnet pieces is adopted. However, without being limited to this, for example, a normal single-plate permanent magnet or a well-known permanent magnet is used. A magnetic force enhancing means may be adopted. Further, in the embodiment, the iron ball is adopted as the magnetic body, but the present invention is not limited to this, and may be, for example, a lath net. Further, in the embodiments, the cylindrical body has a rectangular cross section. However, the present invention is not limited to this. For example, the cross section may be a square or a polygon having a parallel surface. Furthermore, in the embodiment, stainless steel is used as the material of the cylindrical body. However, the present invention is not limited to this, and a non-magnetic material such as hard aluminum or brass may be used.

Further, in the embodiment, the moving direction of the permanent magnet by the advancing / retreating means is set to the direction orthogonal to the facing direction of the permanent magnets arranged in a pair with the cylindrical body sandwiched therebetween, but the invention is not limited to this. For example, it may be a direction intersecting obliquely with the facing direction of the permanent magnet. Further, in the embodiment, after the excitation is released, the magnetic substance attached to the magnetic body of the tubular body is backwashed with the backwash water supplied from the backwash water supply port below the tubular body. Not limited to this, for example, after the supply of the raw material liquid from the raw material supply port is stopped, the backwash water may be supplied from the product discharge port and discharged from the raw material supply port. In the embodiment, the air cylinder is used as the reciprocating means. However, when processing a non-flammable liquid, a hydraulic cylinder, an electric cylinder, or another electric actuator may be used as the reciprocating means.

[Brief description of the drawings]

FIG. 1 is a side view of a wet magnetic separator according to a first embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a schematic enlarged plan view of the permanent magnet.

FIG. 4 is a side view of a wet magnetic force sorter according to a second embodiment of the present invention.

FIG. 5 is a schematic enlarged plan view of the permanent magnet.

[Explanation of symbols]

10 Wet magnetic force sorter 11 Frame 12 Cylindrical body 12a Opening 12b Opening 13 Upper connecting pipe 13a Input port 14 Lower connecting pipe 15 Iron ball 16 Raw material supply port 16a Air pinch valve 17 Backwash water discharge port 17a Air pinch valve 18 Iron ball Outlet port 18a Iron ball outlet port 18b Iron ball outlet port 19 Product outlet port 19a Air pinch valve 20 Backwash water supply port 20a Air pinch valve 21 Terminal box 22 Mounting plate 23 Slide rod 24 Permanent magnet structure 25 Air cylinder 25a Rod 26 Iron piece 27 Magnet piece 28 Permanent magnet 29 Moving member 30 Side plate 31 Side plate 40 Wet magnetic force sorter a Excitation position b Retreat position

Claims (6)

[Claims] 1. A magnetic body made of a material having a small residual magnetism is filled inside with a gap, and a raw material supply port is provided in the upper part.
In the lower part, a cylindrical body made of a non-magnetic material, in which product outlets are respectively arranged, and in use, are arranged to face each other at exciting positions on both sides of the cylindrical body so as to face each other with different magnetic poles. A magnet and an advancing / retreating means capable of releasing the magnetized state of the magnetic body in the cylinder from the magnetized position of the cylinder to an outer retracted position. Wet magnetic force sorter. 2. The cylindrical body has parallel side surfaces facing each other at the excitation position, and a direction in which the permanent magnet is separated from the cylindrical body by the advancing / retreating means intersects a facing direction of the permanent magnet. 2. The direction is set as follows.
The wet magnetic separator described. 3. The magnetic body is an iron ball, and an upper connecting pipe having an iron ball feeding opening provided at an upper end is connected to an upper portion of the cylindrical body and a side portion of the upper connecting pipe. Is provided with the raw material supply port and a backwash water discharge port for discharging backwash water containing magnetic substances during backwashing, and further, a tapered lower connecting pipe is connected to a lower portion of the cylindrical body, The wet magnetic force sorter according to claim 1 or 2, wherein the product discharge port and the backwash water supply port are provided on the lower side of the lower connecting pipe. 4. The permanent magnet is arranged with opposite magnetic poles at opposite ends of a moving member made of a C-shaped magnetic body in a plan view. When exciting the magnetic body, the permanent magnet is 3. The cylinder body is arranged so as to sandwich parallel side surfaces, and the advancing / retreating means is a cylinder.
Alternatively, the wet magnetic force sorter described in 3. 5. The wet magnetic force sorter according to claim 4, wherein each of the permanent magnets is formed by adhering a plurality of magnet pieces and laminating the permanent magnets so that the facing surfaces of the permanent magnets have the same polarity. . 6. A cylindrical body filled with the magnetic material is provided not only at the exciting position but also at the retracted position, and while the magnetic material of one of the cylindrical bodies is being cleaned, the other cylindrical body is The wet magnetic force sorter according to any one of claims 1 to 5, wherein the magnetic material can be adsorbed and removed by flowing the raw material.