JPS6339647A - Electromagnetic type crusher - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an electromagnetic pulverizer that pulverizes raw materials by the movement of a ferromagnetic material within a container driven by an external moving magnetic field.

[Conventional technology] FIG. 3 shows the principle of an electromagnetic crusher.

1 is a crushing container made of non-magnetic material;
Inside is a small piece of work (called a piece) made of ferromagnetic material.
2 is included. A pair of stators 3a and 3b of a near motor are provided to sandwich the crushing container 1 from above and below to generate a magnetic field in a linear direction. The direction of the moving magnetic field by the stators 3 at 3 b is perpendicular to the flow direction of the raw material passing through the crushing container 1, and the directions of the moving magnetic fields by the stators 3a and 3b are opposite to each other. . With this configuration, piece 2
The pieces 2 rotate in a spiral manner within the crushing container 1 in accordance with the moving magnetic fields of the stators 3a and 3b, so that the fed raw material is crushed by the movement of the pieces 2.

Since the moving speed of the piece 2 can be increased in proportion to the frequency of supply to the stator filters 4a, 4h of the stators 3a, 3b, the raw materials can be pulverized or mixed in a short time.

[Problem to be Solved by the Invention 1] However, with the above-mentioned apparatus, collision energy is generated during grinding, and the temperature inside the grinding container 1 is constantly rising, which may cause inconvenient problems depending on the type of raw material. occured.

In addition, as the piece 2 used in such an electromagnetic crushing rock, a piece of via 7 wire, etc., which has less wear, is cut to a predetermined size.
Due to the collision, the piece 2 gradually wears out. piece 2
If the piece 2 wears out, the crushing performance deteriorates and the piece 2 needs to be replaced, but this replacement is a time-consuming task.

It is an object of the present invention to provide an electromagnetic crushing apparatus that performs natural cooling by circulating the working body and has a working body recovery means added to the circulation path.

[Means for Solving the Problems 1] The electromagnetic crusher of the present invention is an electromagnetic crusher that crushes or stirs raw materials in a container by driving a working body made of a ferromagnetic material inside the container by a moving magnetic field from the outside. The type crushing apparatus is characterized in that a line for sequentially circulating the working bodies inside the container in one direction is provided outside the container, and a working body collecting means for recovering the working bodies is provided in the line.

[Function] According to the above configuration, when the temperature of the working body rises due to crushing inside the container, the working body is naturally cooled by circulating the working body to the line outside the container. In addition, a working body whose life has come to an end due to wear can be easily collected by a working body collecting means provided on the line.

Embodiment 1 FIG. 1 shows a schematic diagram of an electromagnetic crushing apparatus according to an embodiment of the present invention, and the same parts as those in the apparatus of FIG. 3 are given the same reference numerals.

3a and 3b are a pair of stators provided to sandwich the crushing container 1 from above and below;
As shown in FIG. 2, the coils 4a and 4b at t 3 b have a smaller number of coils on one side in the moving magnetic field direction than the Ikegata. As a result, the stator 3a,
The magnetic field generated at 3b is no longer uniform, and the tray 2 in the crushing container 1 driven by this magnetic field begins to exhibit random movements. 5 is a collector, and suction 7
The pieces 2 and raw materials in the crushing container 1 are collected by the suction force of the Ann 6. 7 is piece 2 collected by collector 5
This is a sieve that separates the raw materials by vibration, and the separated raw materials are collected at another location as a product. 8
is a hopper that collects the pieces 2 sorted by the sieve 7, and the pieces 2 collected by the hopper 8 are transported to the raw material supply path of the crusher 1 by a transport device as needed. Reference numeral 9 denotes a damper branched off from the piece conveyance path between the sieve 7 and the hopper 8, and the pieces 2 whose lifespan has reached the end due to wear are discharged from the damper 8 at any time. 10 is a hopper for supplying raw materials.

Next, the operation of the crushing device having the above-described configuration will be explained.

The raw material supplied from the raw material supply hopper 10 is drawn into the crushing container 1 by the suction force of the suction fan 6, and while passing through the powder i and the container 1, it is crushed by the movement of the mixer 2. As described above, since the pieces 2 move randomly, the supplied raw material is efficiently pulverized. The piece 2 remains in the crushing container 1 due to the restraint force generated by the excitation of the stators 3 a and 3 b, and only the raw material is sucked and collected in the collector 5 . This collected raw material is collected as a product through a sieve 7.

In this way, the raw material is continuously pulverized, and during this time, when the temperature of the piece 2 increases due to pulverization, or periodically, the stator 3a.

Power supply to 3b is stopped. As a result, the restraining force of the pieces 2 in the crushing container 1 is eliminated, and the pieces 2 are collected together with the raw material in the collector 5.

Thereafter, the pieces 2 and the raw materials are sorted by the sieve 7, and the raw materials are collected as a product, while the pieces 2 are collected into the hopper 8. After that, stators 3a and 3b
After energizing, the pieces 2 in the hopper 8 are supplied into the crushing device 1 together with the raw material supplied by the raw material supply hopper 10, and the crushing of the raw materials is started. In this way, by circulating the pieces 2 through the line of the sieve 7° hopper 8, etc., the pieces 2 are naturally cooled. Furthermore, when the piece 2 needs to be replaced due to wear, the piece 2 is discharged from the damper 9 by opening the damper 9 and circulating the piece 2 as described above. .

The amount that is insufficient due to the discharge of this piece 2 may be supplied together with the raw material from the raw material supply device 10.

The crushing container 1 described in the above embodiment has a rectangular cross section perpendicular to the raw material outflow direction. With such a shape, the pieces 2 and the raw material collide with the walls inside the crushing container 1, thereby improving the crushing efficiency. However, when the main purpose is to stir the raw material, it is preferable that the cross section of the crushing container 1 is circular to prevent unnecessary turbulence of the pieces 2 and the raw material. A general motorized stator that generates a rotating magnetic field can be used instead.

As explained above, a line for circulating the piece 2 is provided, and a damper 9 for collecting the piece 2 is provided in this line (therefore, by circulating the piece 2 through the line, the piece 2 can be cooled. , also worn piece 2
can be easily recovered from the damper 9. Furthermore, since the magnetic fields generated by the stators 3a and 3b are made non-uniform, the pieces 2 in the crushing container 1 move randomly, thereby efficiently crushing the raw material.

[Effects of the Invention 1] As explained above, in this invention, since a line equipped with a working body recovery means is separately provided, the working bodies can be cooled while circulating through this line, and worn working bodies can be removed. The workpiece can be easily recovered by the workpiece recovery means.

[Brief explanation of the drawing]

Fig. 1 is a block diagram schematically showing an electromagnetic type crusher which is an embodiment of the present invention, Fig. 2 is a cutaway view showing details of the stator section in Fig. 1, and Fig. 3 is a conventional electromagnetic type crusher. It is a broken view showing a crushing part. 1... Grinding container, 2... Piece, 3 a, 3 b
...Stator, 4a, 4b...Stator coil, 5
... Piece collector, 6... Suction fan, 7...
・Sieve, 8... hopper, 9... damper, 10.
・Hara n Tomo! 45. Hopper. Figure 3 3q Step Procedure Amendment (Self-Restrained Patent Office Commissioner Mem March 1902, Name of Invention Electromagnetic Pulverizer 3, Relationship with the Person Who Makes the Amendment Case Patent Applicant"' (523) Yushi Densei Mashishiki Company 4, Agent Address: 2-1-61 Mi, Higashi-ku, Osaka City, Osaka Prefecture 540
No. 6 Subject of amendment: Drawings

Claims (1)

[Claims] (1) In an electromagnetic crusher that crushes or stirs raw materials in a container by driving a working body made of a ferromagnetic material inside the container by a moving magnetic field from the outside, the working body in the container is sequentially moved in one direction. An electromagnetic crushing device characterized in that a line for circulation is provided outside the container, and a work body recovery means for recovering the work body is provided in the line.