JPS5946146A - Electromagnetic type crushing treating device - 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 a moving magnetic field to the processing container from the outside. The present invention relates to an electromagnetic pulverization device that performs a pulverization operation on granulated material by causing random motion in pieces.

As this type of moving magnetic field type electromagnetic pulverization apparatus, those shown in FIGS. 1 and 2 have already been proposed. In the figure, 1 is a large number of working pieces 3 made of ferromagnetic or non-magnetic conductive material together with crushed material 2 to be processed.
This is a processing container containing a container 1, and moving magnetic field generators 4 and 5 are arranged facing each other above and below the container 1, and the moving directions of the moving magnetic fields are mutually arranged as shown by φ1 and φ2. is set in the opposite direction. The moving magnetic field generators 4 and 5 are well-known as so-called linear motors (hereinafter, the "moving magnetic field generator" is referred to as a "linear motor"), and for example, rotate the AC winding 6. Like electricity, it is constructed by winding it inside the coil slot of the iron core 7, and receives power from the power supply to generate moving magnetic fields φ1, φ.
form 2.

With this configuration, the working piece 3 placed in the magnetic field where the moving magnetic fields φ1 and φ2 act is exposed to the moving magnetic fields φ1 and φ2.
An electromagnetic force based on the interaction with φ2 acts, which causes translational force in the direction of the moving magnetic field, levitation force, and rotational torque that rotates around the center of gravity, as well as collisions between the working pieces and the collision between the working pieces and the container. Due to the collision with the wall, etc., the working piece 3 causes intense random movement, and as a whole moves toward the processing container 1 as shown by arrow P.
It performs a circular movement in which it circles inside. The pulverizing operation of the pulverized material 2 is performed by the random circular movement of the working piece.

It is desired that this type of pulverization processing apparatus has high pulverization efficiency and that it is easy to take out the crushed product of fine powder produced as the pulverization operation progresses.

On the other hand, according to observation using a high-speed camera of the pulverization process carried out using the apparatus shown in FIG. Among the working pieces 3, those close to the linear motor 4 move from right to left inside the container while rotating while being attracted toward the iron core surface by the action of the moving magnetic field φ1. On the other hand, the working piece near the linear motor 5 moves from left to right along the moving magnetic field φ2. Then, when approaching a corner in the direction of movement in the processing container 1, the direction changes, and the working pieces on the lower side move upwards, supported by the succeeding working pieces, and those on the upper side move downwards, and eventually Once they enter the magnetic field action area of the linear motor on the opposite side, they can be seen to be translated again in the direction of the moving magnetic field. However, in this case, the corner indicated by the symbol A in FIG. 1, that is, the working piece 3 that has been translated along the moving magnetic fields φ1 and φ2 changes direction and then turns further in the direction of the moving magnetic field on the opposite side. It has become clear that there is almost no flow of the working piece 3 at the corner of the part to be changed, and the corner of this corner A is a blind spot for the circumferential movement of the working piece 3.

Furthermore, it can be seen that the crushed material 2 remains at this corner A with almost no movement. On the other hand, at the other corner B, the working pieces 3 directly collide with the end face of the container and gather together in large numbers, so that the movement of the working pieces becomes slow. As is clear from this, in the box-shaped processing container 1 shown in FIG. This is not done, and a large amount of the material to be crushed remains at this corner, making it impossible to obtain sufficient crushing efficiency.

On the other hand, once the crushed material has been pulverized, it is necessary to separate the crushed material from the working piece 3 and collect it, but in this case, as shown in Fig. In the batch processing method containing the raw material 2, it is extremely difficult to separate and discharge only the crushed material from the processing container 1 as it is, and usually the crushed material is taken out of the container together with the working piece 3 and passed through a classification sieve again. A method of sifting the working piece and crushed material using a method has been carried out. However, this method has the disadvantage of poor work efficiency.

This invention was made in consideration of the above points, and its purpose is to solve the problems of the above-mentioned conventional equipment in terms of crushing efficiency and taking out the crushed product at once through its clever structure, and to obtain a high crushing effect. An object of the present invention is to provide an electromagnetic pulverization processing apparatus which allows the pulverized product to be directly taken out from a processing container.

According to the present invention, such a purpose is achieved by disposing a classification sieve obliquely at a corner along the circular movement path of the working piece in the processing container, defining a crushed product extraction chamber at the corner on the back side of the sieve, and pulverizing. This is achieved by taking out the crushed product that passes through the classification sieve and is collected at the corners during the course of operation to the outside of the processing container through the crushed product collection chamber.

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

First, in FIGS. 3 and 4, among the four corners along the circular movement path P of the working piece 3 in the processing container 1, the upstream side of the moving magnetic fields φ1 and φ2, that is, the corner A shown in FIG. A classification sieve 8 is arranged diagonally in the corresponding corner part, and this sieve 8
A crushed material collection chamber 9 having a triangular cross section and surrounded by the sieve surface and the corner wall surface of the processing container 1 is defined on the back side of the processing container 1 .

Furthermore, a crushed product collection chamber 9 has a connecting opening for a crushed product extraction pipe 10, which communicates with a crushed product recovery container 12 via a suction-type conveying device 11. On the other hand, on the side of the processing container 1 that does not face the linear motors 4 and 5, a crushed material inlet 17 is opened as shown in FIG. are connected by a crushed material supply pipe 15 equipped with a crushed material feed mechanism 14, which is, for example, a screw conveyor.

Next, the pulverizing operation with the above configuration will be described. When the crushed material 2 is fed into the processing container 1 through the crushed material supply pipe 15 with the linear motors 4 and 5 in operation, the crushed material 2 is crushed by the rotation and random movement of the working piece 3, and The fine powder, which has been finely ground to a desired particle size, flows through the processing container 1 while being thrown off by the working piece 3, and when it approaches a corner, it is removed from the flow of the circular motion of the working piece 3, and is classified as described above. It passes through the sieve 8 and gathers in the crushed material collection chamber 9.

In this case, the working pieces 3 or particles with a large particle size constantly pass through the surface side of the classification sieve 8 and hit the sieve surface, so that the sieve 8 is not clogged. Next, the crushed product 16 collected in the chamber 9 is taken out of the container from the chamber 9 through the crushed product extraction pipe 10 and collected into the recovery container 12. By continuing to introduce the crushed material 2 and to take out the crushed material 16, the pulverizing process of the crushed material can be performed continuously. Moreover, according to the above configuration and its crushing operation, as described in FIG. Only the substances can be separated and collected within the processing container, and the crushed products can be successively taken out and collected outside while the operation is being carried out.

In addition, unlike in the conventional case, the coarse crushed material 2 that is still pulverized or in the coarsely pulverized stage does not stay in the corners of the corners, so the crushed material 2 is evenly pulverized to the end, and the crushed material 2 has a uniform particle size. You can get things. Moreover, the crushed material 2 is separated and discharged as soon as it is crushed to a predetermined particle size in the processing container, so the degree of vortex crushing is small, and therefore the generation of ultrafine powder that becomes an obstacle to the continuation of the crushing operation is avoided. It is possible to improve the crushing performance, such as being able to press down, and at the same time, it becomes possible to easily separate and take out the crushed product.

The embodiment shown in Fig. 3 shows a case in which crushed material collection chambers are defined at two specific corners among the four corners, but a classification sieve is arranged diagonally at each of the four corners. A debris collection chamber may also be defined. FIG. 5 shows an embodiment in which crushed material collection chambers 9 are defined at each of the four corners. Furthermore, in this embodiment, a partition is provided inside the processing container 1 to define a plurality of independent processing chambers lined up on the left and right, and with this configuration, it is possible to perform pulverization of multiple items with one device. I can do it. By disposing the sieves 8 diagonally at each of the four corners of the processing container 1, the sieves 8 at each corner serve as corner guides for the circular movement of the working piece 3. This helps improve grinding performance because it allows for smooth circular motion.

As described above, according to the present invention, the corners, which were previously considered dead zones and ineffective spaces from the perspective of the crushing process, are actively utilized to improve crushing efficiency and separate crushed products. Practical effects such as being able to take out the material can be obtained.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the principle of construction of an electromagnetic crushing device, Fig. 2 is a sectional view taken along arrow II-II in Fig. 1, Fig. 3 is a sectional view of the arrangement of an embodiment of the present invention, and Fig. 4 is a sectional view taken along arrow II-II in Fig. 1. 3 is a sectional view taken along arrow IV-IV, and FIG. 5 is a schematic configuration diagram of another embodiment. DESCRIPTION OF SYMBOLS 1... Processing container, 2... Crushed material, 3... Working piece, 4, 5... Moving magnetic field generator, 8... Classifying sieve, 9... Crushed material collection chamber, 16...Crushed product, 1
7... Grinding material introduction port, φ1, φ2... Moving direction of moving magnetic field, P... Circulating motion path of working piece.

Claims (1)

[Claims] 1) A box-shaped processing container in which a number of working pieces made of a magnetic material or a non-magnetic conductive material are housed; It consists of a pair of moving magnetic field generators whose moving magnetic field directions are opposite to each other, and the working piece rotates in the processing container along the moving magnetic field direction by electromagnetic force based on the interaction with the moving magnetic field. In an electromagnetic pulverization device that crushes crushed material introduced into a processing container to obtain a crushed product, a classification sieve is passed through a corner along the circular movement path of the working piece in the processing container. An electromagnetic pulverization processing apparatus characterized in that the crushed product collected at the corner of the corner is taken out of the container through the crushed product collection chamber. 2) In the pulverization processing apparatus according to claim 1, the pulverization processing apparatus is characterized in that the pulverized product collection chamber is defined in a corner part of the processing container corresponding to the upstream side in the direction of the moving magnetic field. Type crushing equipment. 3) An electromagnetic crushing device according to claim 1, characterized in that crushed product collection chambers are defined at each of the four corners of the processing container. . 4) In the pulverization processing apparatus according to any one of claims 1 to 3, the processing container is provided with a pulverized material inlet, and the pulverized material is continuously fed into the container through the pulverized material inlet. An electromagnetic crushing device characterized by being configured to feed into the interior.