JPS5952543A - Electromagnetic crushing apparatus - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] This invention accommodates a working piece made of ferromagnetic or non-magnetic conductive material together with crushed material in a processing container, and applies an 8III magnetic field to the processing container from the outside. , an electromagnetic pulverization processing device that performs a pulverization operation of pulverized material by causing a working piece to undergo random motion This article relates to structural improvement of the extraction section.

First, the principle of this type of moving magnetic field type electromagnetic crushing device will be explained with reference to FIGS. 1 and 42. In the figure, l is a non-magnetic processing container containing crushed material 2 as the object to be processed and a large number of working pieces 3 made of a magnetic material or a non-magnetic conductive material. A moving magnetic field generating device 4.5 is disposed oppositely above and below the two, and the moving direction of the generated magnetic field is indicated by the arrow φ1. As shown by φ2, they are set in opposite directions. This moving magnetic field generator 4.5 is well known as a so-called linear motor (hereinafter referred to as [moving magnetic field generator j
is called a "linear motor". ) For example, a three-phase AC winding 6 is wound in a coil slot of an iron core 7 in the same way as in a rotating electric machine, and the moving magnetic field φ is
1. Form φ2.

With this configuration, the moving magnetic field φ1. The working piece 3 placed in the magnetic field where φ2 acts has a moving magnetic field φl,
An electromagnetic force based on the interaction with φ2 acts, which causes a translational force in the direction of movement of the magnetic field, a rotational torque that rotates around the floating blade and the center of gravity, and also causes collisions between the working pieces and the collision between the working pieces and the container wall. As a result of the collision with the working piece 3, the working piece 3 causes a violent random movement, and as a whole, it performs a circular movement in which it rotates inside the processing container 1 as shown by an arrow P. The pulverizing operation of the pulverized material 2 is performed by the random circular movement of the working piece.

The above-mentioned equipment is of a so-called batch processing type, but in order to efficiently and continuously process a large amount of crushed material,
A continuous processing apparatus configured as shown in FIG. 3 is employed. That is, in FIG. 3, the processing container I has a crushed material inlet 8 on one of the front and rear end wall surfaces not facing the linear motors 4 and 5, and a crushed material outlet 9 on the other side.
In front of the processing container 1 is a classification sieve 1o with sieve openings set according to the desired particle size so that only the crushed product can pass through.
equipped inside. In addition, a crushed material hopper 1 is provided at the crushed material inlet 8.
1. The fixed quantity supply feeder 12 of the crushed material is connected to the crushed material supply vig 13
In contrast, an air flow conveying pipe 18 is connected to the crushed product outlet 9, and a proar 15 is connected to the crusher 15 via a mulch 14, which is, for example, a bag filter ξ.

The proar 15 plays the role of transporting airflow so that the crushed material is taken out from the processing container 1 by the transport airflow generated by its movement. In the figure, reference numeral 16 indicates a crushed product collection container, and 17 indicates a crushed product obtained by passing through the classification sieve 10.

With the above configuration, if the crushed material 2 is supplied from the hopper 11 to the processing container 1 while operating the linear motors 4 and 5, it will be finely crushed by the random movement of the working piece (not shown) and processed as shown by the arrow P1. It advances towards the exit 9 while moving spirally inside the container l. The crushed product, which is finely pulverized by the conveying airflow caused by the operation of the proa 15, passes through the classification sieve 10 from inside the processing container 1 and enters the dust collector 14, where it is separated from the airflow and collected into the collection container 17. be done.

Note that the conveying airflow separated from the crushed material is discharged into the atmosphere through the propeller 15 as indicated by the arrow.

By the way, when the above-mentioned processing device continuously pulverizes the crushed material, it may sometimes become impossible to take out the crushed material.

This phenomenon is caused by clogging of the classification sieve, so the crushed material is pulverized in the processing container as described above, and the material is crushed at the outlet 9.
When the crushed material is continuously taken out from the sieve, the coarsely pulverized material that cannot pass through the sieve of the classification sieve 10 passes through the sieve 10 while being sucked and guided to the outlet side. It will stick and cause clogging of the sieve. For this reason, in the past, the processing J rotation was stopped each time, and the classification
) 10, but this work is not only troublesome, but also reduces the operating efficiency of the processing equipment, so this improvement measure is desired. There is.

The clogging phenomenon of the classification sieve described above will now be described in more detail with regard to the structure of a conventional processing container. That is, in the conventional apparatus shown in FIG. WJ3, as detailed in FIG. 4 and FIG. 5, the flat classification sieve 10 is moved in the magnetic field movement direction φ1. It is arranged in a plane parallel to the movement direction P of the working piece 3 circulating inside the container along φ2.

The conveying air flow is perpendicular to the sieve surface of the classification sieve lO. In this structure, the working piece 3 rotates in parallel with the classification sieve 10, so the working piece 3 does not actively interfere with the classification sieve 10, and is carried by the conveying air flow A. This invention was made in consideration of the above points, and its purpose is to improve the circular motion of the working pieces moving around in the processing container through the clever structural arrangement of the classification sieve. A processing device that skillfully utilizes this technology to prevent clogging of classification sieves? It's about giving grandchildren.

According to the present invention, the classification sieve is made into a cylindrical structure whose peripheral surface is the sieve surface, and the classification sieve is aligned parallel to the linear motor and perpendicular to the direction of movement of the magnetic field to provide a crushed product outlet. This is achieved by protruding into the processing container from the side.

Embodiments of the present invention will be described in detail below based on the drawings.

6 and 7, the basic configuration of the continuous pulverization processing apparatus is the same as that shown in FIG. It is configured as a body and is arranged so as to protrude into the working space of the processing container l. More specifically, the classifying sieve 19 is a cylindrical structure with a bottom made of wire gauze with a metal mesh, and the surface of the cylindrical structure is the sieve surface. The cylindrical shaft is arranged so as to protrude into the working space of the processing container 1 with the cylindrical shaft parallel to the arrangement of the vertical linear motors 4.5 and perpendicular to the moving directions φ1 and φ2 of the magnetic field. 19 is connected directly to the air flow conveying pipe 18 on the outlet side of the processing container 1 by penetrating approximately the center of the container wall.

With the above configuration, the crushed material that has been finely crushed as the crushing operation progresses is carried by the conveying airflow to the classification sieve 1.
The dust passes through the sieve 9 and is taken out and conveyed to the dust collector 14 at the subsequent stage. On the other hand, in the working space of the processing container 1, the working piece 3 moves in the moving magnetic field φ1. Due to the electromagnetic force based on the interaction with φ2, the cylindrical classification sieve 19 is moved around in the direction of arrow P in the container along the direction of magnetic field movement, and due to this orbital movement, the cylindrical classification sieve 19 protrudes into the working space. In this case, the working piece 3 repeatedly collides or rubs against each other without being fed. Therefore, the hammer effect caused by the impact force of collision and rubbing with the working piece 3 removes and prevents clogging of the classification sieve 19. The cross-sectional shape of the cylindrical classifying sieve 19 is not limited to the circular shape shown in the illustration, but may be appropriately selected based on the elliptical shape or the sieve area determined from the force.

In particular, the diameter size is limited to an extent that does not impede the random movement of the working pieces and the crushed material around the classification sieve.

As described above, the structure of the present invention makes it possible to reliably prevent clogging of the classification sieve, which has been a problem in the past, by skillfully utilizing the circumferential movement of the working piece during the crushing process. can. Therefore, the conventional maintenance work of temporarily stopping the sieve operation to remove clogged sieves is no longer necessary, which makes operational handling easier and improves reliability.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the principle of construction of an electromagnetic pulverization processing device, Fig. 2 is a sectional view taken along arrows in Fig. 1, Fig. 3 is a diagram showing the overall arrangement of a conventional continuous processing processing device, and Fig. 4 The figure is a cross-sectional side view of the processing container in FIG. 3, and an enlarged perspective view showing the main structure of FIG. . 1: processing container, 2: crushed material, 3: working piece, 4.
5: Moving magnetic field generator, 8: Crushed material inlet, 9: Crushed material outlet, 15 Ni blower, 18: Air flow conveying pipe, 19: Cylindrical classification pipe, φl, φ2: Magnetic field movement direction of moving magnetic field, A :
conveying airflow.

Claims (1)

[Claims] 1) A processing container containing a large number of working pieces made of magnetic or non-magnetic conductive materials, and a pair of processing containers placed opposite each other on both sides with this container in the center, the directions of movement of the magnetic fields being opposite to each other. An electromagnetic pulverization processing apparatus that pulverizes crushed material placed in a processing container by the movement of a working piece generated by electromagnetic force due to the moving magnetic field of the moving magnetic field generation apparatus, and Said processing e
Z has a classification sieve installed at the crushed material inlet, crushed material outlet, and crushed material outlet side, and the crushed material that has passed through the classification sieve is taken out from the processing container by air flow conveyance, and the crushed material is continuously pulverized. The classification sieve is formed into a cylindrical structure whose peripheral surface is the sieve surface, and the classification sieve is aligned parallel to the moving magnetic field generator and perpendicular to the direction of movement of the magnetic field to provide a crushed product outlet. An electromagnetic crushing device characterized in that it is installed so as to protrude into a processing container from the side.