JPH05101924A - Magnet apparatus - Google Patents

Abstract

PURPOSE:To extend a magnetic attraction part as the whole magnet apparatus continuously and longitudinally. CONSTITUTION:The apparatus comprises a flexible cylindrical body 12, a plurality of magnet assemblies 14 disposed in the body 12 successively, and longitudinally of the body 12, and means for one-dimensiomlly and foldably coupling the magnet assemblies 14. Each meet assembly 14 comprises at least one permanent magnet 18, and a plurality of yokes 20 coupled with the permanent magnet 18 putting the permanent magnet 18 therebetween and magnetically connected with magnetic pole faces of the permanent magnet 18, and includes magnetic pole faces located around the axis of the cylindrical body 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bendable magnet device using a plurality of permanent magnets.

[0002]

2. Description of the Related Art In a magnetic separator for magnetically extracting and separating a magnetic substance such as iron powder from a liquid mixed with the magnetic substance, a bendable magnet device is used as means for adsorbing the magnetic substance in the liquid There are some (for example, the actual Kaisho Sho 63-1
No. 57251). In the magnet device used in this magnetic separator, a plurality of magnet assemblies are sequentially attached to an endless winding medium such as a chain at intervals in the moving direction thereof.

In the known magnetic separator, the magnetic material in the liquid is attracted to the magnetic attraction surface of the magnet assembly as the winding medium moves through the liquid, and the magnet assembly moves. Is moved out of the liquid and scraped from the magnetic attraction surface by a scraper at the scraping station outside the liquid.

However, in the known magnet device, since a space exists between the magnetic attraction surfaces of the adjacent magnet assemblies, the magnetic attraction surface of the entire magnet device becomes discontinuous, and as a result, the magnet assembly is scratched. Each time the scraping station is reached, the scraper must be moved closer to and then away from the magnet assembly, thus the movement of the scraper and the magnetic scraping mechanism using the scraper It gets complicated.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to make the magnetic attraction portion of the entire magnet device continuous in the longitudinal direction of the magnet device.

[0006]

A magnet device of the present invention includes a flexible tubular body, a plurality of magnet assemblies sequentially arranged in the tubular body in a longitudinal direction of the tubular body, and Means for flexibly one-dimensionally connecting the magnet assemblies, each magnet assembly comprising at least one permanent magnet and a magnetic pole coupled to the permanent magnet with the permanent magnet in between. A plurality of yokes magnetically connected to the surface, and each magnet assembly has a magnetic pole surface around an axis of the cylindrical body.

The magnetic flux from each permanent magnet passes through the corresponding one yoke, the outside of the cylindrical body, and the corresponding other yoke in that order. Therefore, the magnetic body is adsorbed on the outer surface of the cylindrical body.

According to the present invention, since the outer surface of the cylindrical body that essentially defines the magnetic attraction portion is continuous, the magnetic attraction portion as the entire magnet device is essentially continuous in the longitudinal direction of the magnet device. To do. In addition, since the tubular body has flexibility and the adjacent magnet assemblies are bendably connected,
The magnet device itself can be bent.

The yoke can be arranged so as to face the magnetization direction of the permanent magnet, and the magnetic pole surface can be defined by the yoke. A magnet assembly can be obtained by alternately stacking a plurality of permanent magnets and a plurality of yokes in the magnetization direction of the permanent magnets. The adjacent magnet assemblies may be connected to each other by connecting means at the ends in the magnetization direction. A hole may be formed in each of the magnet assemblies so as to penetrate the magnet assembly in the axial direction of the cylindrical body, and the magnet assemblies may be connected by passing the linear body through the hole.

The magnetic device of the present invention is a magnetic separator for magnetically taking out and separating a magnetic material from a tank containing a liquid containing a magnetic material such as iron powder. It can be used as a means for adsorbing and transporting it outside the tank. By doing so, the magnetic attraction surface of the entire magnet device is essentially continuous in the longitudinal direction of the magnet device, so that the magnetic substance can be scraped off the outer surface of the magnet device without moving the scraper. No need for a mechanism to give movement to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIGS. 1 and 2, a magnet device 10 is provided.
Is a flexible tubular body 12 and a plurality of magnet assemblies 14 sequentially arranged in the tubular body in the longitudinal direction of the tubular body.
And a connecting body 16 for connecting the magnet assembly in a one-dimensional manner so as to be bendable.

The tubular body 12 is made of a flexible non-magnetic material such as rubber or soft synthetic resin, and has a hose shape.

Each magnet assembly 14 is a disk-shaped permanent magnet 1
8 is sandwiched between a pair of yokes 20 to integrally bond the permanent magnet 18 and the yoke 20 with an adhesive or the like, and a hole penetrating the magnet assembly 14 along the axis of the magnet assembly 14. 22.

Each of the permanent magnets 18 has a diameter substantially the same as the inner diameter of the cylindrical body 12 and is magnetized in the thickness direction, and the yoke is arranged so that the magnetic pole surface is on the yoke 20 side. It is located between 20. A rod-shaped permanent magnet may be used instead of the plate-shaped permanent magnet.

Each yoke 20 has a disk-shaped first portion 20a which is in contact with one pole surface of the permanent magnet 18, and a truncated cone-shaped second portion 20b which is integrally connected to the first portion 20a. , And a third portion 20c integrally following the second portion. The diameter of the first portion 20a is substantially the same as the diameter of the permanent magnet 18. The outer peripheral surface of the first portion 20 a is in contact with the inner surface of the tubular body 12, and also acts as a magnetic pole surface of the magnet assembly 14. The end surface of the third portion 20c is a hemispherical convex surface.

In the illustrated example, the yoke 20 is entirely made of a magnetic material. However, the first portion 20a of the yoke 20 may be made of a magnetic material and the third portion 20c may be made of a non-magnetic material. In this case, the second part 20
b may be made of a magnetic material or a non-magnetic material.

The connecting body 16 is a linear body such as a wire which is passed through the hole 22 of the magnet assembly 14 to connect the adjacent magnet assemblies 14 in a bendable manner. This linear body may or may not be adhered to the magnet assembly 14 with an adhesive or the like. If not bonded, the ends of the linear body can be joined to a stopper (not shown) to prevent the magnet assembly 14 from slipping out. The adjacent magnet assembly 14 has a third portion 20c of the yoke 20.
Abutting on the convex surface of. However, it does not prevent the relative bending of the adjacent magnet assemblies 14.

In the illustrated example, the magnetizing directions of the adjacent magnet assemblies 14 are opposite to each other, but when the third portion 20c of the yoke 20 is made of a non-magnetic material, the adjacent magnet assemblies 14 are made. May have the same magnetization direction.

The magnetic flux from each permanent magnet 18 passes through the corresponding one yoke 20, the outside of the cylindrical body 12, and the corresponding other yoke 20 in that order. Therefore, the tubular body 12
The outer surface of the magnet acts as a magnetic attraction surface of the magnet device 10,
It is also continuous in the longitudinal direction. The magnetic body is adsorbed on the outer surface of the cylindrical body 12.

As shown in the magnet assembly 24 in FIG. 3, a plurality of disk-shaped permanent magnets 18, 18 and a plurality of yokes 20, 2 are provided.
0 and 26 may be alternately superposed on the magnetization directions of the permanent magnets 18 and 18. In the magnet assembly 24, the yoke 26 is
It has a disc shape and is sandwiched between the permanent magnets 18, 18.

As in each magnet assembly 28 shown in FIG. 4, the end surface of the third portion 20c of one yoke 20 is a hemispherical convex surface, and the third portion 20c of the other yoke 20 is a hemispherical concave surface. May be Adjacent magnet assemblies 28 are in contact with each other at the hemispherical convex surface and concave surface.

In each magnet assembly 30 shown in FIG. 5, the third portion 20c of each yoke 20 is a disc-shaped portion that follows the second portion 20b, and a conical shape that follows the disc-shaped portion. It is composed of parts. Adjacent magnet assemblies 30 are separated by a tubular member 32 arranged between them.

As the connecting body for connecting the adjacent magnet assemblies in a one-dimensional manner so as to be bendable, a body other than the linear body may be used. In addition, instead of connecting the adjacent magnet assemblies so as to be bendable around two axes that are orthogonal to these connecting directions and are orthogonal to each other, the adjacent magnet assemblies are connected to one axis line that is orthogonal to these connecting directions. It may be connected so as to be bendable around.

The magnet assembly 34 shown in FIG. 6 is flexibly one-dimensionally connected to each other by a pair of eyebolt-shaped connecting bodies 36 fixed to the magnet assembly 34.

The magnet assembly 38 shown in FIG. 7 is one-dimensionally connected to each other in a bendable manner by a connecting member 40 using a joint having a pair of spherical portions. Each third part 20c
Is used as a seat for receiving the spherical portion of the connecting body 40. The spherical portion of the connecting body 40 is formed in the third portion 20c.
A retainer 42 is attached to prevent the retainer 42 from being detached from the portion 20c.

The magnet assembly 44 shown in FIG. 8 is one-dimensionally connected so as to be bendable by a connecting member 46 having two annular portions. Each third portion 20c has a connecting body 46.
It is used as a bifurcated bracket that receives the annular portion of. Both annular portions of each connecting body 46 are connected to the corresponding third portion 20c by a pin 48 so as to be pivotally movable about axes extending in directions orthogonal to each other.

The magnet assembly 50 shown in FIG. 9 is one-dimensionally connected so as to be bendable by a connecting member 52 having two annular portions. Each of the third parts 20c has a connecting body 52.
It is used as a bifurcated bracket that receives the annular portion of. Both annular parts of each connecting body 52 are connected to the corresponding third portion 20c by a pin 54 so as to be pivotable about axes extending in parallel in the same direction.

Instead of connecting the permanent magnet and both yokes of the magnet assembly with an adhesive, the magnet assembly 5 shown in FIG.
As in 6, the permanent magnet 18 and both yokes 20 may be connected by the bolt 58. Adjacent magnet assemblies 56
Are connected by a connector 40 similar to the magnet assembly 38 shown in FIG.

The present invention can be applied not only to a magnet device having a circular cross-sectional shape, but also to a magnet device having a polygonal cross-sectional shape such as a quadrangle.

FIG. 11 shows an embodiment of a magnetic separator 60 using the magnet device 10 of the present invention. Magnetic separation device 6
0 is supported by a tank 64 containing a liquid 62 in which a magnetic substance such as iron powder is mixed, a pulley 68 arranged by a bracket 66 on the bottom of the tank, and a frame 70 attached to the upper portion of the tank 64. Multiple pulleys 72, 7
4, 76, a drive mechanism 78 supported by the frame 70 for rotating one pulley 74, a pressing roller 80 supported by the frame 70, and a frame 70 for scraping the magnetic material attached to the magnet device 10. The frame 7 to receive the scraper 82 supported and the magnetic material scraped off.
And a sludge box 84 supported by zero.

The magnet device 10 includes pulleys 68, 72, 7
It is wound around 4, 76 and is moved through the liquid by the rotation of the drive mechanism 78. The magnetic substance mixed in the liquid 62 is adsorbed to the outer surface of the magnet device 10 when the magnet device 10 passes through the liquid 62, and is moved to the outside of the liquid 62 as the magnet device 10 moves.
The scraper 82 scrapes the outer surface of the magnet device 10 from outside. The scraped magnetic material is received by the sludge box 84.

According to the magnetic separator 60, the magnet device 10
Since the outer surface of the scraper is continuous in the longitudinal direction of the scraper,
The magnetic body can be scraped off the outer surface of the magnet device 10 without moving the magnet 4, and a mechanism for imparting motion to the scraper 84 becomes unnecessary.

The magnet device of the present invention can be applied to equipment other than the magnetic separator.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a part of an embodiment of a magnet device of the present invention.

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

FIG. 3 is a view showing another embodiment of the magnet assembly.

FIG. 4 is a view showing still another embodiment of the magnet assembly.

FIG. 5 is a view showing still another embodiment of the magnet assembly.

FIG. 6 is a view showing still another embodiment of the magnet assembly.

FIG. 7 is a view showing still another embodiment of the magnet assembly.

FIG. 8 is a view showing still another embodiment of the magnet assembly.

FIG. 9 is a view showing still another embodiment of the magnet assembly.

FIG. 10 is a sectional view showing another embodiment of the method of assembling the magnet assembly.

FIG. 11 is a diagram showing an embodiment of a magnetic separator using the magnet device of the present invention.

[Explanation of symbols]

10 Magnet Device 12 Cylindrical Body 14, 24, 28, 30, 34, 38, 44, 50, 5
6 Magnet Assembly 16, 36, 40, 46, 52 Coupling 18 Permanent Magnet 20 Yoke

Claims (5)

[Claims] 1. A flexible tubular body, a plurality of magnet assemblies sequentially arranged in the tubular body in a longitudinal direction of the tubular body, and the magnet assembly is one-dimensionally bendable. Each of the magnet assemblies includes at least one permanent magnet, and a plurality of magnets coupled to the permanent magnet with the permanent magnet in between and magnetically connected to a magnetic pole surface of the permanent magnet. Magnets, and each magnet assembly has a magnetic pole surface around an axis of the cylindrical body. 2. The magnet device according to claim 1, wherein the yokes are arranged so as to face each other in a magnetization direction of the permanent magnet and define the magnetic pole surface. 3. The magnet device according to claim 2, wherein the magnet assembly is formed by alternately stacking a plurality of permanent magnets and a plurality of yokes in a magnetization direction of the permanent magnets. 4. The magnet device according to claim 1, 2 or 3, wherein the adjacent magnet assemblies are connected to each other by the connecting means at their ends in the magnetization direction. 5. The magnet assembly has a hole penetrating the magnet assembly in the axial direction of the cylindrical body, and the connecting means has a linear body passed through the hole. 2. The magnet device according to 2 or 3.