JPS61197054A - Electromagnetic type erushing and mixing 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] [Technical field to which the invention pertains]

In this invention, a solid or powder is placed in a processing container that contains a large number of working bodies made of ferromagnetic material. By supplying a material to be processed such as a liquid and applying a moving magnetic field from the outside to this processing container, the working body is caused to move and the material to be processed is pulverized, mixed, grated, stirred, etc. The present invention relates to a continuous processing type electromagnetic pulverization and mixing processing device that allows only the processed material to be taken out afterwards.

[Prior art and its problems]

As this type of continuous processing type electromagnetic pulverization and mixing processing apparatus, those shown in FIGS. 3 and 4 have already been proposed. In the figure, reference numeral 1 denotes a processing container that houses an object to be processed 2 and a large number of spindle-shaped actuating bodies 3 made of ferromagnetic material. A population 1at and an outlet 1b for the object to be processed 2 are opened at both ends. Furthermore, moving magnetic field generators 4.5 are disposed oppositely above and below the processing container 1 with the processing container 1 in the center, and the moving magnetic field is generated along the cross-sectional direction of the processing container 1 as shown by φl and φ2. And the upper and lower directions are opposite to each other. This moving magnetic field generator 4.5 is well known as a so-called linear motor, and has a multiphase AC winding 7 on an iron core 6.
It is made up of wrapped. With this configuration, an electromagnetic force acts on the actuating body 3 placed in the magnetic field space where the moving magnetic fields φl and φ2 act based on the interaction with the moving magnetic field, and this causes translational force, buoyancy, and rotational torque in the direction of the moving magnetic field. In addition to the collision between the actuating bodies 1 and the collision between the actuating body and the wall of the container, the actuating body 3 moves randomly inside the container l and moves inside the container as a whole as shown by arrow A. Circular motion in the cross-sectional direction. Due to this random movement, the workpiece 2 undergoes processing such as pulverization and mixing. On the other hand, once the above-mentioned processing operation is completed, the crushed material obtained by pulverizing the crushed material, or the mixture obtained by mixing two or more types of powder, etc. will be taken out from the processing container. Become. The above-mentioned apparatus is a continuous type in which, for example, as a crusher for crushed materials, a classifier such as a cyclone or a bag filter is connected to the latter stage to crush and classify the crushed materials into two parts and extract crushed products of desired particle size. The pulverization processing system is assembled and configured. For this purpose, an inlet 1a opening into the processing container 1 as shown in FIG.
An inlet duct 8 leading to a supply hopper for crushed material is connected to the outlet 1b, and an outlet duct 9 for taking out crushed materials leading to a subsequent classifier is connected to the outlet 1b. The material to be treated 2 in this apparatus is transported in a pneumatic manner, as shown by arrow B, by the operation of, for example, an air transport blower connected within the system. During operation, the crushed material as the object to be processed 2 sent into the processing container from the inlet duct 8 is moved into the processing container as a whole by the circular random motion of the working piece that moves along the moving direction of the moving magnetic field and the conveying airflow. While moving in a spiral motion, the crushed product is taken out through the outlet duct 9 of the processing vessel 1 on the airflow and conveyed to the subsequent classifier. By the way, as can be seen from the above explanation, Magnetic field generator 4.
The moving magnetic fields φl and φ2 generated by the moving magnetic fields φl and φ2 have only components parallel to the plane of the paper in FIG. Therefore, if the inlet and outlet of the processing container 1 are left freely open, a part of the actuating body 3 will be blown away due to a collision between the actuating bodies, etc. A phenomenon occurs in which particles fly out of the processing container and escape along with the conveying air current while remaining mixed with the crushed products. As a measure to prevent such escape of the actuating body, conventionally, a suitable mesh screen 10 made of wire mesh, punched metal, etc. is provided at the outlet and inlet of the processing container 1 to confine the actuating body 3 within the container. Then, only the material to be treated is introduced through the screen 10. A method has been proposed to take it out. However, this method has the following drawbacks. That is, the operating body 3 is making violent random movements within the processing container 1, and as a matter of course, the operating body 3 also violently collides with the screen 10. As the actuating body 3 repeatedly collides without interruption, the screen 10 often wears out and is damaged within a relatively short period of time. It has been confirmed that the screen method becomes unusable after a few hours of operation.Another problem with the screen method is that as processing progresses, the screen becomes clogged with the processed material, making it difficult to take out the crushed product smoothly. This causes a decrease in grinding efficiency and processing capacity.For this reason, in the past, it was necessary to interrupt operation for a short period of time to clean and replace the screen. There are many unsuitable aspects, and it is hoped that alternative measures will emerge.

[Purpose of the invention] This invention has been made in view of the above points, and is an electromagnetic pulverizer that can skillfully prevent the working body from escaping and scattering outward from the processing container during processing operation without providing a screen. The purpose of the present invention is to provide a mixing processing device. [Key points of the invention]

In order to achieve the above object, the present invention provides a moving magnetic field generating means for recovering the working body, the moving magnetic field direction of which is directed toward the inside of the processing container, on one or both sides of the entrance and exit of the processing container,
A magnetic force is applied to the working body attempting to escape from the processing container by the moving magnetic field generating means for recovering the working body, and the working body is pulled back into the processing container by this magnetic force.

[Embodiments of the invention]

1 and 2 each show a different embodiment of the invention, and the same members as in FIG. 3 are given the same reference numerals. First, in the embodiment shown in FIG. 1, three-phase AC windings 10, represented by phase symbols U, V, and W, are arranged along the inlet duct 8 and the outlet duct 9, which are connected to the inlet and outlet of the processing container l, in the illustrated phase order! !
A moving magnetic field generating device 11.12 for recovering the working body mounted therein is provided. In addition, each moving magnetic field generator 11.12 has its AC winding 10.
By supplying power from a polyphase AC power supply to the dotted line φ3゜φ
The phase sequence of its windings is such that a moving magnetic field directed towards the interior of the processing vessel l is generated, as shown at 4 respectively. Or the current direction is set in advance. According to the above configuration, when the actuating body 3 tries to escape from the container through the inlet and outlet of the processing container 1 during processing operation of the object to be processed, the actuating member 3 moves to the moving magnetic field generator 11.
．． The moving magnetic field φ3 generated by 12. It receives a magnetic force in the direction of the moving magnetic field by φ4, and is pulled back into the processing container by this magnetic force. Therefore, the operating body 3 is reliably prevented from escaping from the processing container 1 without using mechanical means such as providing screens at the inlet and exit sides of the processing container as in the conventional system. The embodiment shown in FIG. 2 is a moving magnetic field generating device 1 for recovering a working body.
1.12 as inlet duct 8. Linear motors 13 each having three-phase AC windings wound around an iron core are arranged on both sides of the outlet duct 9 above and below. Here, each linear motor 13 generates a moving magnetic field φ3. φ4 is the first
It is set to face the inside of the processing container 1 similarly to the figure. The operation of this configuration is similar to that of the embodiment shown in FIG. In each of the above embodiments, an example was shown in which the moving magnetic field generating means for recovering the working body was installed on both the inlet side and the outlet side of the processing container 1, but the following usage is also possible. That is, in a method in which the processing container 1 is installed in an inclined position with the outlet side facing down and the objects to be processed are transported within the container using gravity, the operating body 3 is placed on the inlet side of the processing container during processing operation. Since it hardly ever jumps out, it is possible to omit the moving magnetic field generator 11 on the entrance side. In addition, especially when agitating a liquid, the inlet of the processing container is placed at a low position and the liquid to be processed is pushed up and supplied in order to fill the processing container with the liquid to be processed. There is a method to take it out from the exit side. In this case, since the actuating body hardly escapes from the outlet side, it is possible to omit the moving magnetic field generating means 2 on the outlet side.

【Effect of the invention】

As described above, according to the present invention, the moving magnetic field generating means for recovering the working body is provided on one or both sides of the entrance and exit of the processing container, so that the direction of the moving magnetic field is directed toward the inside of the processing container. It is possible to prevent the working body from escaping from the processing container during processing operation without installing a mechanical working body escape prevention means. Therefore, there is no need for maintenance work such as cleaning and replacing screens as in conventional screen systems, and maintainability and reliability can be greatly improved.

[Brief explanation of the drawing]

1 and 2 are respectively cross-sectional views of the configuration of different embodiments of the apparatus according to the present invention, FIG. 3 is a cross-sectional view of the configuration of a conventional electromagnetic pulverization and mixing apparatus, and FIG. 4 is a view taken in the direction of the arrow in FIG. IV
- In Figure 0, which is an enlarged sectional view of IV, 1: Processing container, 2: Processed object, 3: Working body, 4° 5: Moving magnetic field generator, 8: Inlet duct, 9: Outlet duct, 1
1.12: Moving magnetic field generator for recovering the working body. φ3. φ
4: Direction of the moving magnetic field of the moving magnetic field generator for recovering the working body. Figure 1 Figure 3

Claims (1)

[Claims] 1) A large number of working bodies made of ferromagnetic material are housed in a processing container with an open inlet and an outlet, and the workpiece introduced into the processing container through the inlet is exposed to a moving magnetic field applied to the processing container from the outside. pulverization due to the movement of the working body caused by the interaction of
In an electromagnetic pulverization and mixing processing device that mixes and takes out the processed material from the outlet to the outside of the processing container, a working body is collected on one or both sides of the entrance and exit of the processing container, with the direction of its moving magnetic field directed toward the inside of the processing container. 1. An electromagnetic pulverization and mixing processing device, characterized in that it is provided with a moving magnetic field generating means.