JP3429725B2 - Magnetic roller and magnetic separator using the same - Google Patents
Magnetic roller and magnetic separator using the sameInfo
- Publication number
- JP3429725B2 JP3429725B2 JP2000089566A JP2000089566A JP3429725B2 JP 3429725 B2 JP3429725 B2 JP 3429725B2 JP 2000089566 A JP2000089566 A JP 2000089566A JP 2000089566 A JP2000089566 A JP 2000089566A JP 3429725 B2 JP3429725 B2 JP 3429725B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- permanent magnet
- roller
- outer diameter
- magnetic roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Rollers For Roller Conveyors For Transfer (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、磁気ローラ及びこ
れを用いた磁力選別機に係り、詳しくは、磁場を強くし
て弱磁性物質の選別を行うことができる磁気ローラ及び
これを用いた磁力選別機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic roller and a magnetic force separator using the magnetic roller, and more particularly, to a magnetic roller capable of strengthening a magnetic field to select a weak magnetic substance and a magnetic force using the magnetic roller. Regarding sorting machine.
【０００２】[0002]
【従来の技術】従来より、磁力選別機には、永久磁石を
複数配置した磁気ローラが使用されている。磁気ローラ
に使用される磁石は、その配置や種類によって、形成さ
れる磁力線の向きや強さを変えることができ、この配置
を変えることによって選別効率をよくしようとする試み
が行われていた。例えば、特公昭５７−４３３１０号公
報や特公昭６２−５４５４７号公報には、ドラムの周囲
に所定間隔で配置される磁石を同極性にし、磁石から発
生する磁力線をドラムの周面に対して略垂直になるよう
にして、選別効率を上げようとする装置が記載されてい
た。一方、磁気ローラにゴムベルトを巻着して、このゴ
ムベルト上に原料を投入して選別する方法も行われてい
る。2. Description of the Related Art Conventionally, a magnetic roller in which a plurality of permanent magnets are arranged has been used in a magnetic separator. The magnets used in the magnetic roller can change the direction and strength of the magnetic force lines formed depending on the arrangement and type thereof, and attempts have been made to improve the selection efficiency by changing the arrangement. For example, in Japanese Examined Patent Publication No. 57-43310 and Japanese Examined Patent Publication No. 62-54547, magnets arranged at a predetermined interval around the drum are made to have the same polarity, and magnetic force lines generated from the magnets are substantially aligned with the circumferential surface of the drum. An apparatus has been described which attempts to increase the sorting efficiency by making it vertical. On the other hand, a method is also used in which a rubber belt is wound around a magnetic roller, and the raw material is put on the rubber belt for selection.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記従
来の磁力選別機は、磁石を所定間隔で配置していたの
で、その磁束密度は、使用する永久磁石単体の磁束密度
に依存し、例えば、高磁束密度のＮｄ（ネオジウム）等
の希土類磁石を使用してもその磁束密度は、５０００ガ
ウス程度であった。一般的にオーステナイト系ステンレ
ス鋼は、非磁性体とされているが、切断等による塑性変
形や、熱衝撃等によって部分的にマルテンサイト変態を
生じて磁性体となることが知られている。切断等によっ
て、その組織の一部のみが磁着物となった場合に、この
ような弱磁着物を磁着物として選別するときには、従来
以上に高い磁束密度が必要であったが、従来の磁力選別
機では、磁束密度を上げる手段がないため、使用する永
久磁石の体積、重量、及びこれにかかる費用を増加させ
なければ、これを回収することができなかった。一方、
従来使用されていたゴムベルトは、厚みが６〜７ｍｍ程
度のものを使用していた。一般に知られているように、
磁力は、磁石からの距離の２乗に反比例するので、ベル
トを使用すると選別効率が悪くなるという問題があっ
た。本出願人は、これらの課題を解決すべく、半径方向
外側に磁場を発生する磁気発生部を、回転軸の軸方向に
沿って複数配置した磁気ローラであって、前記磁気発生
部は、強磁性体からなって隙間をあけて対向配置された
第１、第２の固定用円板と、前記第１、第２の固定用円
板の対向する内側面に固着された環状の第１、第２の永
久磁石と、対向配置された前記第１、第２の永久磁石の
外周部を連続的に覆い、前記第１、第２の固定用円板の
外径に合わせて設けられた非磁性体からなる保護カバー
とを有し、しかも、前記第１、第２の永久磁石は同一極
性の磁極が隙間を有して向かい合うように構成した磁気
ローラを発明した。かかる構成によって、上記の磁気ロ
ーラでは、対向配置した磁極の隙間から、永久磁石単体
のときより約１．８倍の強さの磁束密度を発生させるこ
とに成功した。しかし、弱磁着物の種類によっては、こ
の磁束密度でも足りない場合があり、磁束密度をさらに
高くすることが望まれていた。本発明はかかる事情に鑑
みてなされたもので、強い磁力を発生すると共に選別効
率をよくすることができる磁気ローラ及びこれを用いた
磁力選別機を提供することを目的とする。However, since the magnets are arranged at the predetermined intervals in the conventional magnetic force sorter, the magnetic flux density thereof depends on the magnetic flux density of the permanent magnet used alone, and for example, the Even when a rare earth magnet such as Nd (neodymium) having a magnetic flux density was used, the magnetic flux density was about 5000 gauss. Austenitic stainless steel is generally considered to be a non-magnetic material, but it is known that austenitic stainless steel partially undergoes martensitic transformation due to plastic deformation due to cutting or the like, or thermal shock to become a magnetic material. When only a part of the tissue became a magnetic substance due to cutting, a magnetic flux density higher than before was required when selecting such a weak magnetic substance as a magnetic substance. In the machine, since there is no means for increasing the magnetic flux density, the permanent magnet used cannot be recovered without increasing the volume, weight and cost of the permanent magnet. on the other hand,
The conventionally used rubber belt has a thickness of about 6 to 7 mm. As is generally known,
Since the magnetic force is inversely proportional to the square of the distance from the magnet, there is a problem that the selection efficiency deteriorates when a belt is used. In order to solve these problems, the applicant of the present invention is a magnetic roller in which a plurality of magnetic field generators that generate a magnetic field in the radial direction are arranged along the axial direction of a rotating shaft, wherein the magnetic field generators are strong. First and second fixing discs made of a magnetic material and opposed to each other with a gap therebetween, and annular first members fixed to the opposing inner side surfaces of the first and second fixing discs, A second permanent magnet and a first and a second permanent magnet that are arranged to face each other continuously cover outer peripheral portions of the first and second permanent magnets, and are provided according to outer diameters of the first and second fixing disks. A magnetic roller having a protective cover made of a magnetic material, and in which the first and second permanent magnets are arranged so that magnetic poles of the same polarity face each other with a gap. With such a configuration, the magnetic roller has succeeded in generating a magnetic flux density, which is about 1.8 times as strong as that of the permanent magnet alone, from the gap between the magnetic poles arranged facing each other. However, this magnetic flux density may not be sufficient depending on the kind of the weak magnetic material, and it has been desired to further increase the magnetic flux density. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a magnetic roller capable of generating a strong magnetic force and improving sorting efficiency, and a magnetic sorting machine using the magnetic roller.
【０００４】[0004]
【課題を解決するための手段】前記目的に沿う本発明に
係る磁気ローラは、回転軸の軸方向に所定の隙間をあけ
て配置され、それぞれの磁極の向きが前記回転軸の軸方
向に向いた複数のリング状の永久磁石と、各々の前記隙
間に配置され、前記永久磁石の外径と同一、又は前記永
久磁石の外径より少しの範囲で大きい強磁性体からなる
磁気誘導円板とを有し、しかも前記磁気誘導円板を介し
て対向する前記永久磁石の磁極は、同一極性である。こ
こで、磁気誘導円板には、一般的に使用される強磁性体
からなる鋼板を使用することができる。また、磁気誘導
円板には、磁束密度をさらに高くするために、鉄損値、
磁束密度、透磁率などの磁気特性の優れたけい素鋼板、
低炭素鋼板及び純鉄等からなる電磁鋼板を使用すること
も可能である。磁気誘導円板の厚みは、例えば、１〜２
０ｍｍにすることができる。ここでいう少しの範囲と
は、磁気誘導円板の外周端の磁束密度が、弱磁性物の磁
着ができる範囲内であればよく、使用する永久磁石の磁
力や磁気誘導円板の厚みを考慮して決められ、例えば、
１０ｍｍ以下に設定することができる。永久磁石の磁極
が隣り合う永久磁石の磁極と同一極性であるので、両側
の磁石から発生する磁力を合成して強くすることがで
き、また、隣り合う永久磁石間の隙間に磁気誘導円板を
配置しているので、磁気誘導円板内を通過する磁力線を
磁気ローラの外周面まで誘導して、磁気誘導円板の外周
面から半径方向外側に発生する磁場を強くすることがで
きる。According to the present invention, there is provided a magnetic roller having a predetermined gap in the axial direction of a rotary shaft, and each magnetic pole is oriented in the axial direction of the rotary shaft. A plurality of ring-shaped permanent magnets, and a magnetic induction disk that is disposed in each of the gaps and is made of a ferromagnetic material that is the same as the outer diameter of the permanent magnet or is larger than the outer diameter of the permanent magnet in a range slightly smaller than the outer diameter of the permanent magnet. And the magnetic poles of the permanent magnets that face each other through the magnetic induction disk have the same polarity. Here, as the magnetic induction disc, a generally used steel plate made of a ferromagnetic material can be used. In addition, in order to further increase the magnetic flux density in the magnetic induction disk, the iron loss value,
Silicon steel sheet with excellent magnetic properties such as magnetic flux density and permeability
It is also possible to use a low carbon steel plate and an electromagnetic steel plate made of pure iron or the like. The thickness of the magnetic induction disk is, for example, 1 to 2
It can be 0 mm. The small range here means that the magnetic flux density at the outer peripheral edge of the magnetic induction disk is within a range in which a weak magnetic substance can be magnetically adhered, and the magnetic force of the permanent magnet used and the thickness of the magnetic induction disk can be defined as follows. It is decided in consideration of, for example,
It can be set to 10 mm or less. Since the magnetic poles of the permanent magnets have the same polarity as the magnetic poles of the adjacent permanent magnets, the magnetic forces generated from the magnets on both sides can be combined and strengthened, and a magnetic induction disk is provided in the gap between the adjacent permanent magnets. Since they are arranged, the magnetic force lines passing through the magnetic induction disk can be guided to the outer peripheral surface of the magnetic roller, and the magnetic field generated radially outward from the outer peripheral surface of the magnetic induction disk can be strengthened.
【０００５】ここで、リング状の前記永久磁石を、多数
の円弧状磁石を接続して前記磁気誘導円板に固着し、前
記永久磁石の外周の半径方向外側に、前記磁気誘導円板
の外径に合わせて設けられた非磁性体からなる環状の保
護カバーを装着することが好ましい。円弧状磁石を接続
するので、取扱いを簡単にすると共に、永久磁石の破損
を防止することができる。保護カバーには、例えば、厚
みの薄いステンレス鋼板を使用することができ、それぞ
れの保護カバーを一体的に形成して共用することもでき
る。保護カバーを設けることによって、永久磁石に磁性
粉が付着することを防止することができる。Here, the ring-shaped permanent magnet is fixed to the magnetic induction disk by connecting a large number of arc-shaped magnets, and the outer circumference of the magnetic induction disk is outside the outer circumference of the permanent magnet in the radial direction. It is preferable to mount an annular protective cover made of a non-magnetic material provided according to the diameter. Since the arcuate magnets are connected, handling can be simplified and damage to the permanent magnets can be prevented. For the protective cover, for example, a thin stainless steel plate can be used, and the respective protective covers can be integrally formed and shared. By providing the protective cover, it is possible to prevent magnetic powder from adhering to the permanent magnet.
【０００６】また、前記磁気誘導円板を、軸方向に前記
回転軸によって連結する他、前記永久磁石の半径方向内
側にあって、前記磁気誘導円板を貫通する複数の連結ね
じによって連結することも可能である。連結ねじは、全
ての磁気誘導円板を貫通する長いねじを使用してもよ
く、また、長さの短い連結ねじを多数使用して２〜４枚
の磁気誘導円板をそれぞれ固定するように構成してもよ
い。このように構成することによって、複数の磁気誘導
円板及び永久磁石を、各永久磁石の反発力に対抗して確
実に取付けることができる。前記目的に沿う本発明に係
る磁力選別機は、回転軸の軸方向に所定の隙間をあけて
配置され、それぞれの磁極の向きが前記回転軸の軸方向
に向いた複数のリング状の永久磁石と、各々の前記隙間
に配置され、前記永久磁石の外径と同一、又は前記永久
磁石の外径より少しの範囲で大きい強磁性体からなる磁
気誘導円板とを有し、しかも前記磁気誘導円板を介して
対向する前記永久磁石の磁極は、同一極性である磁気ロ
ーラと、前記磁気ローラと従動車とを接続する厚みの薄
い磁着物搬送ベルトと、前記磁気ローラを回転させる駆
動源とを有し、弱磁性物質の選別を行う。In addition to connecting the magnetic induction discs by the rotary shaft in the axial direction, the magnetic induction discs are connected by a plurality of connecting screws located inside the permanent magnet in the radial direction and penetrating the magnetic induction discs. Is also possible. The connecting screw may be a long screw penetrating all the magnetic induction discs, or a large number of connecting screws having a short length may be used to fix each of the 2 to 4 magnetic induction discs. You may comprise. With this structure, the plurality of magnetic induction disks and the permanent magnets can be reliably attached against the repulsive force of each permanent magnet. The magnetic separator according to the present invention, which meets the above-mentioned object, is provided with a plurality of ring-shaped permanent magnets arranged with a predetermined gap in the axial direction of the rotary shaft, and the direction of each magnetic pole is oriented in the axial direction of the rotary shaft. And a magnetic induction disk made of a ferromagnetic material which is disposed in each of the gaps and is the same as the outer diameter of the permanent magnet or larger than the outer diameter of the permanent magnet in a range slightly smaller than the outer diameter of the permanent magnet. The magnetic poles of the permanent magnets that face each other through the disk are a magnetic roller having the same polarity, a thin magnetic material conveying belt that connects the magnetic roller and the driven wheel, and a drive source that rotates the magnetic roller. To select weak magnetic substances.
【０００７】磁着物搬送ベルトには、非磁性体で屈曲性
のあるシート状、メッシュ状のもの、例えば、ステンレ
ス、チタン、銅等の金属の他、人工皮革、天然皮革、プ
ラスチック、布等を用いることができる。ここで、厚み
の薄いとは、例えば、０．１ｍｍ以上、１ｍｍ以下の範
囲をいい、好ましくは、０．３ｍｍ以上、０．６ｍｍ以
下の範囲をいう。駆動源を作動させることによって、磁
着物搬送ベルトを介して接続された従動車及び磁気ロー
ラが回転する。磁気ローラの永久磁石は、同一極性の磁
極が磁気誘導円板を挟んで向かい合っているので、磁気
誘導円板から磁気ローラの半径方向外側に発生する磁界
を強くして、磁着物搬送ベルトを介して投入される原料
中に含まれる弱磁性物質を非磁性体と分離して選別する
ことができる。また、磁気ローラに厚みの薄い磁着物搬
送ベルトを取付けて使用しているので、磁気ローラの発
生する磁場の強さを効率よく利用することができると共
に、磁気ローラの表面が原料と摺動して摩耗することを
防止することができる。また、前記磁着物搬送ベルト
を、ステンレス製の帯板、又は網状板によって構成する
ことも可能である。このように構成することによって、
厚みを薄くして選別効率をよくすると共に、耐久性に優
れた装置を製造することができる。As the magnetic material-carrying belt, a non-magnetic and flexible sheet-shaped or mesh-shaped material such as metal such as stainless steel, titanium and copper, as well as artificial leather, natural leather, plastic and cloth are used. Can be used. Here, the thin thickness means, for example, a range of 0.1 mm or more and 1 mm or less, preferably a range of 0.3 mm or more and 0.6 mm or less. By operating the drive source, the driven wheel and the magnetic roller connected via the magnetic substance conveying belt rotate. Since the magnetic poles of the same polarity face each other across the magnetic induction disc, the permanent magnet of the magnetic roller strengthens the magnetic field generated from the magnetic induction disc to the outside of the magnetic roller in the radial direction, and the magnetic substance is conveyed through the magnetic substance transfer belt. It is possible to separate the weak magnetic substance contained in the charged raw material from the non-magnetic substance and to select it. In addition, since a thin magnetic material conveyor belt is attached to the magnetic roller for use, the strength of the magnetic field generated by the magnetic roller can be efficiently used and the surface of the magnetic roller slides against the raw material. Can be prevented from being worn away. Further, it is possible to configure the magnetic substance conveyance belt by a stainless steel strip plate or a mesh plate. By configuring in this way,
It is possible to reduce the thickness to improve the sorting efficiency and to manufacture a device having excellent durability.
【０００８】[0008]
【発明の実施の形態】続いて、添付した図面を参照しつ
つ、本発明を具体化した実施の形態について説明し、本
発明の理解に供する。図１、図２に示すように、本発明
の一実施の形態に係る磁力選別機１０は、両端部を軸受
３６によって支持された回転軸１４の軸方向に沿って所
定の隙間をあけ、交互に複数配置されたリング状の永久
磁石１９、２０と、各々の前記隙間に配置され、永久磁
石１９、２０の外径より少しの範囲で大きい強磁性体、
例えば、鋼板からなる磁気誘導円板１５とを有する磁気
ローラ１１と、磁気ローラ１１と図示しない従動車とを
接続する厚みの薄い磁着物搬送ベルト１２と、磁気ロー
ラ１１を回転させる減速モータ等からなる駆動源とを有
し、一部が磁着物に変態したオーステナイト系ステンレ
スやヘマタイト等の弱磁性物質の選別を行う装置であ
る。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. As shown in FIG. 1 and FIG. 2, a magnetic force separator 10 according to an embodiment of the present invention is configured such that a predetermined gap is opened along the axial direction of a rotary shaft 14 supported at both ends by bearings 36 and alternated. A plurality of ring-shaped permanent magnets 19 and 20, and a ferromagnetic material that is arranged in each of the gaps and is larger than the outer diameter of the permanent magnets 19 and 20 in a range of a little,
For example, from a magnetic roller 11 having a magnetic induction disk 15 made of a steel plate, a thin magnetic material conveying belt 12 that connects the magnetic roller 11 and a driven wheel (not shown), a deceleration motor that rotates the magnetic roller 11, and the like. Is a device for selecting a weak magnetic substance such as austenitic stainless steel or hematite partially transformed into a magnetic substance.
【０００９】以下、まず、磁気ローラ１１の構造につい
て、図１〜図３を参照して詳しく説明する。磁気ローラ
１１は、回転軸１４の軸方向の両端部に固定円板１３を
それぞれ取付け、両固定円板１３の間に複数のリング状
の永久磁石１９、２０を交互に設け、隣り合う永久磁石
１９、２０の間に磁気誘導円板１５を挟んだ構造になっ
ている。ここで、磁気誘導円板１５の構造について詳し
く説明する。磁気誘導円板１５には、中央に回転軸１４
が挿通する軸通し孔２１が形成され、その内周の一部に
は、キー溝４７が形成されている。First, the structure of the magnetic roller 11 will be described in detail below with reference to FIGS. The magnetic roller 11 has fixed discs 13 attached to both ends of the rotary shaft 14 in the axial direction, and a plurality of ring-shaped permanent magnets 19 and 20 are alternately provided between the fixed discs 13. The magnetic induction disk 15 is sandwiched between 19 and 20. Here, the structure of the magnetic induction disk 15 will be described in detail. The magnetic induction disk 15 has a rotating shaft 14 at the center.
Is formed with a shaft through hole 21, and a key groove 47 is formed in a part of the inner periphery thereof.
【００１０】また、磁気誘導円板１５の軸方向両側の外
周端部には、全周に亘って切欠き部２５が形成されてい
る。そして、磁気誘導円板１５の半径方向内側には、連
結ねじ２２が挿通する固定用孔２３が８箇所に均等配置
されて形成されている。なお、切欠き部２５は、固定円
板１３の対向側の外周端部にも形成されている。次に、
永久磁石１９、２０の構造について詳しく説明する。永
久磁石１９、２０は、多数の円弧状磁石２８を接続して
磁気誘導円板１５に固着して形成された同一形状の部材
で、永久磁石１９、２０の磁極の向きは、回転軸１４の
軸方向に向けて形成され、また、磁気誘導円板１５を介
して対向する永久磁石１９、２０のそれぞれの磁極は、
同一極性になるように構成されている。また、永久磁石
１９、２０は、軸心を磁気誘導円板１５及び回転軸１４
に一致させ、固定円板１３又は磁気誘導円板１５に軸方
向の片面を固着している。Notches 25 are formed over the entire circumference at the outer peripheral ends of the magnetic induction disk 15 on both sides in the axial direction. Further, on the inner side in the radial direction of the magnetic guide disk 15, fixing holes 23 through which the connecting screws 22 are inserted are evenly arranged at eight locations. The cutout portion 25 is also formed in the outer peripheral end portion on the opposite side of the fixed disc 13. next,
The structure of the permanent magnets 19 and 20 will be described in detail. The permanent magnets 19 and 20 are members of the same shape formed by connecting a large number of arc-shaped magnets 28 and fixing them to the magnetic induction disk 15, and the magnetic poles of the permanent magnets 19 and 20 are oriented in the direction of the rotating shaft 14. The magnetic poles of the permanent magnets 19 and 20 that are formed in the axial direction and that face each other via the magnetic induction disk 15 are:
It is configured to have the same polarity. Further, the permanent magnets 19 and 20 have their axes centered on the magnetic induction disk 15 and the rotary shaft 14.
And one side in the axial direction is fixed to the fixed disk 13 or the magnetic induction disk 15.
【００１１】環状の永久磁石１９の半径は、磁気誘導円
板１５の半径より切欠き部２５の径方向の幅ｄの分だけ
小さくしている。そして、永久磁石１９は、図３におい
て右側がＮ極、左側がＳ極になるように着磁されてい
る。なお、本実施の形態では、図２、図３に示すよう
に、永久磁石１９は、周方向に１６分割された円弧状磁
石２８を軸方向に２段重ねて形成されているが、これ
は、磁石を成形するプレスの能力や作業コストとの関係
で変更可能で、例えば、８分割や４分割、又は分割しな
いで成形してもよい。永久磁石２０は、永久磁石１９と
同様に複数の円弧状磁石２８によって形成され、磁極の
向きを永久磁石１９に対向するようにして、磁気誘導円
板１５を挟んで永久磁石１９とは逆側に配置されてい
る。永久磁石１９、２０は、同一極性の磁極（Ｎ極、又
はＳ極）が、磁気誘導円板１５を介して対向配置されて
いるので、対向する磁極同士が反撥して、各磁極から磁
気ローラ１１の周方向に向かう磁力線を、磁気ローラ１
１の半径方向外側に曲げることができる。また、永久磁
石１９、２０の磁力が合成されるので、磁気誘導円板１
５の半径方向外側に発生する磁力を強くすることができ
る。さらに、永久磁石１９、２０の間に設けられた磁気
誘導円板１５の外周端が永久磁石１９、２０の外周より
半径方向外側に突出しているので、磁気誘導円板１５内
を通過する磁力線を磁気ローラ１１の外周面まで誘導し
て、磁気ローラ１１の外周面からの磁力線の立ち上がり
方向を、磁気ローラ１１の外周面に対してより垂直に近
づけることができる。かかる構成によって、磁気ローラ
１１の外周面に対する垂直方向の磁束密度をより大きく
して、選別される弱磁性体を効率よく磁着することがで
きる。The radius of the annular permanent magnet 19 is made smaller than the radius of the magnetic induction disk 15 by the radial width d of the notch 25. The permanent magnet 19 is magnetized so that the right side is the N pole and the left side is the S pole in FIG. In this embodiment, as shown in FIGS. 2 and 3, the permanent magnet 19 is formed by stacking the arc-shaped magnets 28, which are divided into 16 in the circumferential direction, in two stages in the axial direction. The shape of the magnet can be changed depending on the ability of the press for molding the magnet and the working cost. For example, the magnet may be divided into eight, four, or not divided. The permanent magnet 20 is formed of a plurality of arc-shaped magnets 28 like the permanent magnet 19, and the magnetic pole faces the permanent magnet 19 so that the permanent magnet 20 is opposite to the permanent magnet 19 with the magnetic induction disk 15 interposed therebetween. It is located in. In the permanent magnets 19 and 20, magnetic poles (N pole or S pole) of the same polarity are arranged so as to face each other with the magnetic induction disk 15 interposed therebetween. The magnetic lines of force directed toward the circumferential direction of the magnetic roller 11
It can be bent outward in the radial direction of 1. Further, since the magnetic forces of the permanent magnets 19 and 20 are combined, the magnetic induction disk 1
The magnetic force generated on the outer side in the radial direction of 5 can be increased. Furthermore, since the outer peripheral end of the magnetic induction disc 15 provided between the permanent magnets 19 and 20 projects outward in the radial direction from the outer periphery of the permanent magnets 19 and 20, the magnetic field lines passing through the magnetic induction disc 15 are prevented. By guiding to the outer peripheral surface of the magnetic roller 11, the rising direction of the magnetic force lines from the outer peripheral surface of the magnetic roller 11 can be made closer to perpendicular to the outer peripheral surface of the magnetic roller 11. With such a configuration, the magnetic flux density in the direction perpendicular to the outer peripheral surface of the magnetic roller 11 can be increased, and the weak magnetic material to be selected can be efficiently magnetized.
【００１２】次に、永久磁石１９、２０の外周の半径方
向外側に設けられた環状の保護カバー２７について説明
する。保護カバー２７は、非磁性体、例えば、ステンレ
ス鋼板からなり、磁気誘導円板１５の外径に合わせて形
成されている。保護カバー２７は、永久磁石１９、２０
の外周の半径方向外側に装着され、永久磁石１９、２０
の外周と、磁気誘導円板１５の切欠き部２５と、磁着物
搬送ベルト１２によって囲まれた筒状空間部３０に装着
され、永久磁石１９、２０に直接磁性粉が付着するのを
防止している。また、保護カバー２７は、磁気誘導円板
１５の外周面と永久磁石１９、２０の外周面の間に一定
の距離を保ち、磁気ローラ１１の外周面の磁束密度の分
布を調整している。Next, the annular protective cover 27 provided on the outer circumference of the permanent magnets 19 and 20 in the radial direction will be described. The protective cover 27 is made of a non-magnetic material, for example, a stainless steel plate, and is formed to match the outer diameter of the magnetic induction disk 15. The protective cover 27 includes permanent magnets 19 and 20.
Mounted on the outer side in the radial direction of the outer circumference of the permanent magnets 19, 20.
Of the magnetic induction disk 15, the cutout portion 25 of the magnetic induction disk 15, and the cylindrical space portion 30 surrounded by the magnetic substance conveying belt 12 to prevent the magnetic powder from directly adhering to the permanent magnets 19 and 20. ing. Further, the protective cover 27 maintains a constant distance between the outer peripheral surface of the magnetic induction disk 15 and the outer peripheral surfaces of the permanent magnets 19 and 20, and adjusts the distribution of the magnetic flux density on the outer peripheral surface of the magnetic roller 11.
【００１３】次に、永久磁石１９、２０、保護カバー２
７、及び磁気誘導円板１５の配置、連結状態について説
明する。永久磁石１９、２０は、各磁気誘導円板１５の
一側面にそれぞれ軸心を合わせて固着され、各永久磁石
１９、２０の半径方向外側には、保護カバー２７がそれ
ぞれ取付けられている。回転軸１４の中央部には、キー
溝３４が形成され、各永久磁石１９、２０及び保護カバ
ー２７を取付けた磁気誘導円板１５は、回転軸１４のキ
ー溝３４及び磁気誘導円板１５のキー溝４７に嵌入され
るキー３５によって軸方向に連結されている他、磁気誘
導円板１５に形成された固定用孔２３に貫通して、永久
磁石１９、２０の半径方向内側にある８本の連結ねじ２
２と、連結ねじ２２に噛合して磁気誘導円板１５を締結
固定するナット２６によって連結されている。なお、磁
気誘導円板１５を固定するナット２６のうちの一方は、
省略して組み立てることも可能である。また、連結ねじ
２２の長さを短くして、磁気誘導円板１５を１枚ずつ固
定するように構成することも可能である。Next, the permanent magnets 19 and 20, the protective cover 2
7, the arrangement and connection state of the magnetic induction disk 15 will be described. The permanent magnets 19 and 20 are fixed to one side surface of each magnetic induction disk 15 with their axes aligned, and a protective cover 27 is attached to the outside of each permanent magnet 19 and 20 in the radial direction. A key groove 34 is formed in the center of the rotary shaft 14, and the magnetic induction disk 15 to which the permanent magnets 19 and 20 and the protective cover 27 are attached is the same as the key groove 34 and the magnetic induction disk 15 of the rotary shaft 14. In addition to being axially connected by the key 35 fitted in the key groove 47, the eight magnets that penetrate through the fixing holes 23 formed in the magnetic induction disk 15 and are radially inside the permanent magnets 19, 20 are provided. Connecting screw 2
2 and a nut 26 that meshes with the connecting screw 22 and fastens and fixes the magnetic induction disk 15. In addition, one of the nuts 26 for fixing the magnetic induction disk 15 is
It is also possible to omit and assemble. It is also possible to shorten the length of the connecting screw 22 and fix the magnetic induction disks 15 one by one.
【００１４】次に、磁気ローラ１１を用いた磁力選別機
１０について説明する。磁気ローラ１１の回転軸１４の
延長された一側端部には、キー溝３７が形成され、回転
軸１４は、その一側端部に取付けられた図示しないＶベ
ルト及びＶプーリ、又は軸継手を介して駆動源に連結さ
れる。磁気ローラ１１と従動車とを接続する磁着物搬送
ベルト１２には、例えば、非磁着性金属の一例であるス
テンレス製で、厚み０．１ｍｍ以上１ｍｍ以下、好まし
くは、０．３ｍｍ以上０．６ｍｍ以下の帯板、又は網状
板を使用することができる。一般に、磁力は、磁石から
の距離の２乗に反比例するので、磁着物搬送ベルト１２
の厚みを薄くすることによって、磁気ローラ１１が発生
する磁場を有効に利用することができる。次いで、磁力
選別機１０の使用時の状態について図２を参照して説明
する。駆動源によって磁気ローラ１１が駆動されると、
磁着物搬送ベルト１２によって接続された従動車も回転
する。Next, the magnetic force sorter 10 using the magnetic roller 11 will be described. A key groove 37 is formed on the extended one end of the rotating shaft 14 of the magnetic roller 11, and the rotating shaft 14 is mounted on the one end of the V belt and V pulley (not shown), or a shaft coupling. Is connected to the drive source via. The magnetic material conveying belt 12 that connects the magnetic roller 11 and the driven wheel is made of, for example, stainless steel which is an example of a non-magnetic metal and has a thickness of 0.1 mm or more and 1 mm or less, preferably 0.3 mm or more. A strip of 6 mm or less, or a mesh plate can be used. Generally, since the magnetic force is inversely proportional to the square of the distance from the magnet, the magnetic substance-carrying conveyor belt 12
The magnetic field generated by the magnetic roller 11 can be effectively utilized by reducing the thickness of the magnetic roller 11. Next, a state of using the magnetic force sorter 10 will be described with reference to FIG. When the magnetic roller 11 is driven by the drive source,
The driven wheel connected by the magnetic substance conveyance belt 12 also rotates.
【００１５】選別される原料を磁着物搬送ベルト１２の
上方から投入すると、原料は、磁気ローラ１１の方向に
移動し、原料中の弱磁性物質を含む磁着物は、磁気ロー
ラ１１の各永久磁石１９、２０の磁力によって磁着物搬
送ベルト１２の表面に吸引される。磁着物が吸引された
状態で磁気ローラ１１が９０度回転すると、原料中の非
磁着物は、重力によって下方（図中の矢印Ａ）に落下す
る。さらに、磁気ローラ１１が９０度回転すると、磁気
ローラ１１と磁着物搬送ベルト１２が離反するので、磁
気ローラ１１に吸引されている磁着物搬送ベルト１２表
面の磁着物は、重力と、磁気ローラ１１の回転による円
周方向の力によって、右下方向（図中の矢印Ｂ）に落下
する。When the raw material to be selected is put in from above the magnetic material conveying belt 12, the raw material moves toward the magnetic roller 11, and the magnetic material containing weak magnetic substances in the raw material is the permanent magnets of the magnetic roller 11. It is attracted to the surface of the magnetic substance transport belt 12 by the magnetic forces of 19 and 20. When the magnetic roller 11 rotates 90 degrees in a state where the magnetic substance is attracted, the non-magnetic substance in the raw material falls downward (arrow A in the figure) due to gravity. Further, when the magnetic roller 11 rotates 90 degrees, the magnetic roller 11 and the magnetic substance conveying belt 12 are separated from each other, so that the magnetic substance attracted to the magnetic roller 11 on the surface of the magnetic substance conveying belt 12 is gravity and the magnetic roller 11 Due to the force in the circumferential direction due to the rotation of, the robot falls in the lower right direction (arrow B in the figure).
【００１６】従来は、磁気ローラ１１の吸着力が小さか
ったため、弱磁性物質は、非磁着物と共に矢印Ａの方向
に落下していたが、本発明に係る磁気ローラ１１を使用
することによって、磁界の強さを強くすることができた
ので、磁着物として矢印Ｂの方向に落下させ、選別する
ことができる。次に、図４を参照して、本発明に係る磁
気ローラ１１を使用した変形例に係る磁力選別機３８に
ついて説明する。磁力選別機３８は、前述した磁気ロー
ラ１１と、磁気ローラ１１の外周に隙間を有して配置さ
れた磁着物搬送板３９と、磁着物搬送板３９に対向して
設けられた磁気誘導部材４０とを有している。また、磁
着物搬送板３９の上部には、落下ガイド板４１が、下部
には、磁着物４６を永久磁石１９、２０の磁束から引き
離す磁気分離板４２が連接して形成されている。Conventionally, since the magnetic roller 11 has a small attraction force, the weak magnetic substance has fallen in the direction of the arrow A together with the non-magnetic substance, but by using the magnetic roller 11 according to the present invention, the magnetic field is reduced. Since the strength of the magnetic substance can be increased, the magnetic substance can be dropped in the direction of the arrow B and sorted. Next, with reference to FIG. 4, a magnetic force sorter 38 according to a modified example using the magnetic roller 11 according to the present invention will be described. The magnetic force sorter 38 includes the above-described magnetic roller 11, a magnetic material conveying plate 39 arranged with a gap on the outer periphery of the magnetic roller 11, and a magnetic guiding member 40 provided to face the magnetic material conveying plate 39. And have. Further, a drop guide plate 41 is formed on the upper part of the magnetic material transport plate 39, and a magnetic separation plate 42 for separating the magnetic material 46 from the magnetic flux of the permanent magnets 19 and 20 is formed on the lower part thereof.
【００１７】そして、磁着物搬送板３９の側方に、磁着
物搬送板３９及び磁気誘導部材４０を含む角筒状の磁力
選別部４３を形成している。磁力選別部４３の下方に
は、傾斜角度を調整可能な分離板４４が設けられ、磁力
選別部４３から下方に落下する非磁着物４５と、磁気ロ
ーラ１１に吸引されながら磁気分離板４２に沿って右下
に落下する磁着物４６に分離することができる。以上、
本発明に係る実施の形態について説明してきたが、本発
明は、前記実施の形態に限定されるものではなく、例え
ば、磁気ローラ１１は、８本の連結ねじ２２で固定して
いるが、使用する永久磁石の強度によっては、６本、４
本に減らしてもよく、また、９本、１０本に増やしても
よい。また、回転軸を固定軸に変更して、両固定円板１
３、及び各磁気誘導円板１５を固定軸に対して回転可能
に設けることも可能である。さらに、駆動源は、磁気ロ
ーラを駆動する方式にしているが、従動車を駆動させて
もよい。また、磁気誘導円板の外径を永久磁石１９、２
０の外径と実質的に同一にして、磁気ローラの外周を１
つの保護カバーで覆うことも可能である。Then, on the side of the magnetic material transport plate 39, there is formed a rectangular cylindrical magnetic force selection portion 43 including the magnetic material transport plate 39 and the magnetic induction member 40. A separation plate 44 whose tilt angle can be adjusted is provided below the magnetic force selection unit 43, and along the magnetic separation plate 42 while being attracted to the non-magnetized object 45 that falls downward from the magnetic force selection unit 43 and the magnetic roller 11. It is possible to separate the magnetic substance 46 falling to the lower right. that's all,
Although the embodiment according to the present invention has been described, the present invention is not limited to the above-described embodiment. For example, although the magnetic roller 11 is fixed by eight connecting screws 22, Depending on the strength of the permanent magnet,
The number of books may be reduced or may be increased to 9, or 10. Also, changing the rotating shaft to a fixed shaft, both fixed discs 1
It is also possible to provide 3 and each magnetic induction disk 15 rotatably with respect to a fixed shaft. Further, although the drive source is of the type that drives the magnetic roller, it may drive a driven vehicle. In addition, the outer diameter of the magnetic induction disk is set to the permanent magnets 19, 2
The outer diameter of the magnetic roller is 1
It is also possible to cover with one protective cover.
【００１８】[0018]
【実施例】図５（Ａ）に示すように、例えば、外径２５
０〜３５０ｍｍ、内径１５０〜２００ｍｍ、厚み２５〜
３５ｍｍの環状のＮｄマグネットを１６分割して形成し
た磁石片の軸方向の両側をそれぞれＮ、Ｓ極に着磁した
円弧状磁石を、試作品として使用した。EXAMPLE As shown in FIG. 5A, for example, an outer diameter of 25
0-350 mm, inner diameter 150-200 mm, thickness 25-
An arc-shaped magnet, in which both sides in the axial direction of a magnet piece formed by dividing a 35 mm annular Nd magnet into 16 parts, were magnetized to N and S poles, respectively, was used as a prototype.
【００１９】[0019]
【表１】 [Table 1]
【００２０】表１の位置（１）、（２）、（３）は、図
５（Ｂ）に示すように、それぞれ円弧状磁石の外周から
半径方向内側に２ｍｍの位置、２５〜１００ｍｍの位
置、内周から半径方向外側に２ｍｍの位置を表し、Ａ、
Ｂ、Ｃは、それぞれ立設した円弧状磁石の左端から周方
向内側に２ｍｍの位置、中央位置、右端から周方向内側
に２ｍｍの位置を示している。なお、表１、表２中に示
す数値の単位は、ガウス（Ｇ）である。表１に示すよう
に、円弧状磁石の磁束密度は、位置（２）−Ａの点で最
大値４６８０Ｇを示している。The positions (1), (2), and (3) in Table 1 are, as shown in FIG. 5 (B), positions 2 mm inward in the radial direction from the outer circumference of the arc-shaped magnet, and positions 25 to 100 mm. , 2 mm from the inner circumference to the outside in the radial direction,
B and C respectively indicate a position of 2 mm inward in the circumferential direction from the left end of the arc-shaped magnets standing upright, a central position, and a position of 2 mm inward in the circumferential direction from the right end. The unit of the numerical values shown in Tables 1 and 2 is Gauss (G). As shown in Table 1, the magnetic flux density of the arc-shaped magnet has a maximum value of 4680 G at the position (2) -A.
【００２１】次に、図６に示すように、前記円弧状磁石
を５つ、隣り合う円弧状磁石の磁極が向かい合うように
配列し、配列した円弧状磁石の両端と、各円弧状磁石間
に厚み９ｍｍの磁気誘導板をそれぞれ挟んだ試験装置を
製作した。磁気誘導板の円弧状磁石の上端からの突出距
離は、３ｍｍにした。そして、各磁気誘導板の上側端の
左右の角部から磁石から遠ざかる方向（図６において上
方）に１０ｍｍおきの各点で磁束密度を測定した。Next, as shown in FIG. 6, five arc-shaped magnets are arranged so that the magnetic poles of the adjacent arc-shaped magnets face each other, and between the both ends of the arranged arc-shaped magnets and each arc-shaped magnet. A test device was manufactured in which magnetic induction plates each having a thickness of 9 mm were sandwiched. The protrusion distance from the upper end of the arc-shaped magnet of the magnetic guide plate was 3 mm. Then, the magnetic flux density was measured at every 10 mm point in the direction away from the magnet (upper side in FIG. 6) from the left and right corners of the upper end of each magnetic induction plate.
【００２２】[0022]
【表２】 [Table 2]
【００２３】図６及び表２に示すように、Ａ〜Ｅは、磁
気誘導板からの距離が、それぞれ０ｍｍ、１０ｍｍ、２
０ｍｍ、３０ｍｍ、４０ｍｍの位置を示し、（１）〜
（１２）は、１２箇所ある各磁気誘導板の上側端の両角
部に、左から順に番号を付したものである。例えば、表
２中のＣ−（４）は、左から２番目の磁気誘導板の右側
の角部から上方に２０ｍｍの位置で測定した磁束密度
（１１１０Ｇ）を示している。表２に示すように、この
場合の最大磁束密度は、Ａ−（９）の１１３３０Ｇであ
った。また、磁気誘導板の厚みを９ｍｍより小さくした
もので測定すると、磁束密度が大きくなることが確認さ
れた。しかし、磁気誘導板の厚みを一定の厚みより小さ
くした場合には、磁束密度は大きくなるが、磁着物を吸
着する力が小さくなった。これは、磁着物に接触する磁
気誘導板の面積が磁気誘導板の厚みに比例して小さくな
るためと考えられる。As shown in FIG. 6 and Table 2, in A to E, the distance from the magnetic induction plate was 0 mm, 10 mm, and 2 respectively.
The positions of 0 mm, 30 mm, and 40 mm are shown, and (1) to
In (12), numbers are sequentially added from the left to both corners of the upper end of each of the 12 magnetic induction plates. For example, C- (4) in Table 2 indicates the magnetic flux density (1110 G) measured at a position 20 mm above the right corner of the second magnetic induction plate from the left. As shown in Table 2, the maximum magnetic flux density in this case was 11330 G of A- (9). Further, it was confirmed that the magnetic flux density was increased when measured with a magnetic induction plate having a thickness smaller than 9 mm. However, when the thickness of the magnetic induction plate was made smaller than a certain value, the magnetic flux density increased, but the force for adsorbing the magnetic substance became smaller. It is considered that this is because the area of the magnetic induction plate contacting the magnetic substance becomes smaller in proportion to the thickness of the magnetic induction plate.
【００２４】[0024]
【表３】 [Table 3]
【００２５】次に、図１に示す磁気ローラ１１と同じ構
成になるように、円弧状磁石の厚みを前記試験装置（図
６参照）に使用した円弧状磁石の半分にして環状に接続
し、かつ２段に重ねて永久磁石として使用した磁気ロー
ラの磁束密度を実施例として測定した。以下、図１を参
照して説明する。なお、磁気誘導円板の厚みは７ｍｍに
している。表３に示す場所（１）、（１４）は、それぞ
れ磁気ローラの左右の固定円板の外周端部、（２）〜
（１３）は、左から右に順に設けられた磁気誘導円板の
外周端部を示している。表３に示すように、本実施例で
は、磁気誘導円板上の場所（２）で、最大値１４４２０
Ｇを示し、場所（４）で最小値１３１００Ｇを示してい
る。前述した試験装置より磁束密度が大きくなったの
は、磁気誘導円板の厚みを前記磁気誘導板より薄くした
ことの他に、円弧状磁石を環状に接続したので、磁力線
が周方向に逃げなくなったことが考えられる。なお、図
示しない比較例においては、磁気誘導円板を省略し、厚
み約４０ｍｍの永久磁石の間に空間部を形成した試作品
を製作したが、最大磁束密度は、１１２００Ｇしかなか
った。このように、単体で最大５０００Ｇ以下の磁束密
度しかない永久磁石を、隙間を有して同磁極を対向配置
させ、その間に磁気誘導円板を挟むことによって、円弧
状磁石単体の場合に比べて、約２．５倍以上の磁束密度
を得ることができた。Next, the thickness of the arc-shaped magnet is made half that of the arc-shaped magnet used in the test apparatus (see FIG. 6) so that the magnetic roller 11 shown in FIG. In addition, the magnetic flux density of the magnetic roller used as a permanent magnet in two layers was measured as an example. Hereinafter, description will be given with reference to FIG. The thickness of the magnetic induction disc is 7 mm. The locations (1) and (14) shown in Table 3 are the outer peripheral end portions of the left and right fixed disks of the magnetic roller, and (2) to
(13) shows the outer peripheral end of the magnetic induction disk provided in order from left to right. As shown in Table 3, in the present example, the maximum value 14420 was obtained at the position (2) on the magnetic induction disk.
G is shown, and the minimum value 13100G is shown at the place (4). The magnetic flux density was higher than that of the above-mentioned test equipment because the magnetic induction disk was thinner than the magnetic induction plate and the arcuate magnets were connected in an annular shape, so that the lines of magnetic force did not escape in the circumferential direction. It is possible that In a comparative example (not shown), a magnetic induction disk was omitted and a prototype having a space portion formed between permanent magnets having a thickness of about 40 mm was manufactured, but the maximum magnetic flux density was only 11200G. As described above, by arranging permanent magnets having a maximum magnetic flux density of 5000 G or less as a single unit, the magnetic poles are arranged to face each other with a gap, and a magnetic induction disk is sandwiched therebetween, as compared with the case of a single arc-shaped magnet. The magnetic flux density of about 2.5 times or more could be obtained.
【００２６】[0026]
【発明の効果】請求項１〜３記載の磁気ローラにおいて
は、永久磁石の磁極が隣り合う永久磁石の磁極と同一極
性であるので、両側の磁石から発生する磁力を合成して
強くすることができ、また、両側の磁石の間の隙間に磁
気誘導円板を設けているので、磁気誘導円板内を通過す
る磁力線を磁気ローラの外周面まで誘導して、磁気誘導
円板の外周面から半径方向外側に発生する磁場を強くす
ることができる。特に、請求項２記載の磁気ローラにお
いては、円弧状磁石を接続して永久磁石を形成するの
で、取扱いを簡単にすると共に、永久磁石の破損を防止
することができる。また、保護カバーを設けることによ
って、永久磁石に磁性粉が付着することを防止すること
ができる。請求項３記載の磁気ローラにおいては、磁気
誘導円板を、軸方向に回転軸によって連結する他、磁気
誘導円板を貫通する複数の連結ねじによって連結するの
で、複数の磁気誘導円板及び永久磁石を、各永久磁石の
反発力に対抗して確実に取付けることができる。請求項
４及び５記載の磁力選別機においては、磁気ローラの永
久磁石が、同一極性の磁極が磁気誘導円板を挟んで向か
い合っているので、磁気誘導円板から磁気ローラの半径
方向外側に発生する磁界を強くして、磁着物搬送ベルト
を介して投入される原料中に含まれる弱磁性物質を非磁
性体と分離して選別することができる。また、磁気ロー
ラに厚みの薄い磁着物搬送ベルトを取付けて使用してい
るので、磁気ローラの発生する磁場の強さを効率よく利
用することができると共に、磁気ローラの表面が原料と
摺動して摩耗することを防止することができる。そし
て、請求項５記載の磁力選別機においては、磁着物搬送
ベルトを、ステンレス製の帯板、又は網状板によって構
成するので、磁着物搬送ベルトの厚みを薄くして選別効
率をよくすると共に、耐久性に優れた装置を製造するこ
とができる。According to the magnetic roller of the present invention, since the magnetic poles of the permanent magnets have the same polarity as the magnetic poles of the adjacent permanent magnets, the magnetic forces generated by the magnets on both sides can be combined to strengthen. In addition, since a magnetic induction disk is provided in the gap between the magnets on both sides, the magnetic force lines passing through the magnetic induction disk are guided to the outer peripheral surface of the magnetic roller, and The magnetic field generated radially outward can be strengthened. Particularly, in the magnetic roller according to the second aspect, since the arc-shaped magnets are connected to form the permanent magnets, the handling can be simplified and the permanent magnets can be prevented from being damaged. Further, by providing the protective cover, it is possible to prevent magnetic powder from adhering to the permanent magnet. According to another aspect of the magnetic roller of the present invention, the magnetic induction discs are connected not only by the rotation shaft in the axial direction but also by a plurality of connecting screws penetrating the magnetic induction disc. The magnet can be securely attached against the repulsive force of each permanent magnet. In the magnetic force sorter according to claims 4 and 5, since the permanent magnets of the magnetic roller face each other with the magnetic poles of the same polarity sandwiching the magnetic induction disk, the magnetic induction disk is generated on the outer side in the radial direction of the magnetic roller. It is possible to separate the weak magnetic substance contained in the raw material introduced through the magnetic substance conveying belt from the non-magnetic substance and to select it. In addition, since a thin magnetic material conveyor belt is attached to the magnetic roller for use, the strength of the magnetic field generated by the magnetic roller can be efficiently used and the surface of the magnetic roller slides against the raw material. Can be prevented from being worn away. Further, in the magnetic force sorter according to claim 5, since the magnetic substance transport belt is constituted by a stainless steel strip plate or a mesh plate, the thickness of the magnetic substance transport belt is reduced to improve sorting efficiency, and It is possible to manufacture a device having excellent durability.
【図１】本発明の一実施の形態に係る磁力選別機の側断
面図である。FIG. 1 is a side sectional view of a magnetic force separator according to an embodiment of the present invention.
【図２】同磁力選別機の正断面図である。FIG. 2 is a front sectional view of the same magnetic separator.
【図３】同磁力選別機の部分拡大断面図である。FIG. 3 is a partially enlarged cross-sectional view of the same magnetic separator.
【図４】本発明の変形例に係る磁力選別機の正面図であ
る。FIG. 4 is a front view of a magnetic force separator according to a modification of the present invention.
【図５】（Ａ）、（Ｂ）は、それぞれ本発明の実施例で
使用する永久磁石の正面図と、永久磁石を構成する円弧
状磁石の正面図である。5 (A) and 5 (B) are respectively a front view of a permanent magnet used in an embodiment of the present invention and a front view of an arc-shaped magnet constituting the permanent magnet.
【図６】図５（Ｂ）に示す試験片を使用した試験装置の
説明図である。FIG. 6 is an explanatory view of a test apparatus using the test piece shown in FIG. 5 (B).
１０：磁力選別機、１１：磁気ローラ、１２：磁着物搬
送ベルト、１３：固定円板、１４：回転軸、１５：磁気
誘導円板、１６：円弧状磁石、１９、２０：永久磁石、
２１：軸通し孔、２２：連結ねじ、２３：固定用孔、２
５：切欠き部、２６：ナット、２７：保護カバー、２
８：円弧状磁石、３０：筒状空間部、３４：キー溝、３
５：キー、３６：軸受、３７：キー溝、３８：磁力選別
機、３９：磁着物搬送板、４０：磁気誘導部材、４１：
落下ガイド板、４２：磁気分離板、４３：磁力選別部、
４４：分離板、４５：非磁着物、４６：磁着物、４７：
キー溝10: Magnetic force sorter, 11: Magnetic roller, 12: Magnetic material conveying belt, 13: Fixed disc, 14: Rotating shaft, 15: Magnetic induction disc, 16: Arc magnet, 19, 20: Permanent magnet,
21: shaft through hole, 22: connecting screw, 23: fixing hole, 2
5: Notch, 26: Nut, 27: Protective cover, 2
8: Arc magnet, 30: Cylindrical space part, 34: Key groove, 3
5: key, 36: bearing, 37: key groove, 38: magnetic force sorter, 39: magnetic material carrier plate, 40: magnetic induction member, 41:
Drop guide plate, 42: magnetic separation plate, 43: magnetic force selection unit,
44: Separation plate, 45: Non-magnetic material, 46: Magnetic material, 47:
Keyway
Claims (5)
置され、それぞれの磁極の向きが前記回転軸の軸方向に
向いた複数のリング状の永久磁石と、各々の前記隙間に
配置され、前記永久磁石の外径と同一、又は前記永久磁
石の外径より少しの範囲で大きい強磁性体からなる磁気
誘導円板とを有し、しかも前記磁気誘導円板を介して対
向する前記永久磁石の磁極は、同一極性であることを特
徴とする磁気ローラ。1. A plurality of ring-shaped permanent magnets, which are arranged with a predetermined gap in the axial direction of the rotating shaft, and whose magnetic poles are oriented in the axial direction of the rotating shaft, and are arranged in the respective gaps. A magnetic induction disk made of a ferromagnetic material that is the same as the outer diameter of the permanent magnet, or is larger than the outer diameter of the permanent magnet in a range that is slightly smaller than the outer diameter of the permanent magnet. A magnetic roller characterized in that the magnetic poles of the permanent magnet have the same polarity.
ング状の前記永久磁石は、多数の円弧状磁石を接続して
前記磁気誘導円板に固着され、前記永久磁石の外周の半
径方向外側には、前記磁気誘導円板の外径に合わせて設
けられた非磁性体からなる環状の保護カバーが装着され
ていることを特徴とする磁気ローラ。2. The magnetic roller according to claim 1, wherein the ring-shaped permanent magnet is connected to a large number of arc-shaped magnets and fixed to the magnetic induction disk, and is radially outward of an outer circumference of the permanent magnet. Is equipped with an annular protective cover made of a non-magnetic material provided so as to match the outer diameter of the magnetic induction disk.
て、前記磁気誘導円板は、軸方向に前記回転軸によって
連結されている他、前記永久磁石の半径方向内側にあっ
て、前記磁気誘導円板を貫通する複数の連結ねじによっ
て連結されていることを特徴とする磁気ローラ。3. The magnetic roller according to claim 1, wherein the magnetic guide disks are axially connected to each other by the rotary shaft, and are inside the permanent magnet in the radial direction. A magnetic roller characterized by being connected by a plurality of connecting screws penetrating a disk.
置され、それぞれの磁極の向きが前記回転軸の軸方向に
向いた複数のリング状の永久磁石と、各々の前記隙間に
配置され、前記永久磁石の外径と同一、又は前記永久磁
石の外径より少しの範囲で大きい強磁性体からなる磁気
誘導円板とを有し、しかも前記磁気誘導円板を介して対
向する前記永久磁石の磁極は、同一極性である磁気ロー
ラと、前記磁気ローラと従動車とを接続する厚みの薄い
磁着物搬送ベルトと、前記磁気ローラを回転させる駆動
源とを有し、弱磁性物質の選別を行うことを特徴とする
磁力選別機。4. A plurality of ring-shaped permanent magnets which are arranged with a predetermined gap in the axial direction of the rotating shaft, and each magnetic pole is oriented in the axial direction of the rotating shaft, and are arranged in each of the gaps. A magnetic induction disk made of a ferromagnetic material that is the same as the outer diameter of the permanent magnet, or is larger than the outer diameter of the permanent magnet in a range that is slightly smaller than the outer diameter of the permanent magnet. The magnetic poles of the permanent magnets have a magnetic roller of the same polarity, a thin magnetic material conveying belt that connects the magnetic roller and the driven wheel, and a drive source that rotates the magnetic roller. A magnetic force sorter characterized by performing sorting.
記磁着物搬送ベルトは、ステンレス製の帯板、又は網状
板からなることを特徴とする磁力選別機。5. The magnetic force sorter according to claim 4, wherein the magnetic substance conveyance belt is made of a stainless steel strip plate or a mesh plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000089566A JP3429725B2 (en) | 2000-03-28 | 2000-03-28 | Magnetic roller and magnetic separator using the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000089566A JP3429725B2 (en) | 2000-03-28 | 2000-03-28 | Magnetic roller and magnetic separator using the same |
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| Publication Number | Publication Date |
|---|---|
| JP2001276646A JP2001276646A (en) | 2001-10-09 |
| JP3429725B2 true JP3429725B2 (en) | 2003-07-22 |
Family
ID=18605307
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000089566A Expired - Lifetime JP3429725B2 (en) | 2000-03-28 | 2000-03-28 | Magnetic roller and magnetic separator using the same |
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| Country | Link |
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2000
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238203A (en) * | 2016-08-04 | 2016-12-21 | 中钢集团安徽天源科技股份有限公司 | A kind of New type wet permanent magnetic separator |
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|---|---|
| JP2001276646A (en) | 2001-10-09 |
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