JPS5952537A - Operation system of 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 a moving magnetic field from the outside to □ Wa”
Generate violent random movements in the king piece to crush the crushed material! ! The present invention relates to an electromagnetic pulverization processing apparatus, particularly an operating method of a processing apparatus configured to carry out continuous pulverization of pulverized material.

The principle of this type of processing device will now be explained with reference to FIGS. 1 and 2. In other words, in Fig. 1, 1 is the crushed material 2
This is a processing container containing a large number of spindle-shaped working pieces 3, both of which are made of ferromagnetic or non-magnetic conductive material.This container 1 is sandwiched in the center, and above and below it are moving magnetic field generators. 4.5 are arranged facing each other, 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, the "moving magnetic field generator" will be referred to as a "linear motor.") For example, it is constructed by winding a three-phase winding wire 6 along an iron core 7 to form multiple poles, and is a multi-phase AC power source. It receives electric power and generates moving magnetic fields φ1 and φ2.

With the configuration shown in Fig. 1, the working piece 3 placed in the magnetic field where the moving magnetic fields φl and φ2 act is subjected to electromagnetic force due to the action of magnetization and eddy current, and the working piece 3 is placed in the magnetic field where the moving magnetic fields φl and φ2 act. to perform rotational movement, and a moving magnetic field φ1. In addition to the propulsive force and floating force caused by φ2 in the direction of the moving magnetic field, collisions between the working pieces and collisions between the container walls a cause intense random motion within the container 1. The whole goes around inside the container as shown by arrow P. Due to this random movement, the crushed material 2 is finely crushed by collision with the working piece 3 and the like.

The above-mentioned apparatus 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 type apparatus configured as shown in FIG. 3 is adopted. That is, in FIG. 3, the processing container 1 has a crushed material inlet 8 on one of both end walls not facing the linear motors 4 and 5.
On the other hand, there is a crushed product outlet 9, and in front of the outlet 9, a classification sieve lO with sieve openings set according to the desired particle size is installed in the processing container so that the crushed product can pass through. is equipped with. Further, the crushed material inlet 8 has a crushed material hopper 11. A constant current feeder 12 for supplying crushed material is connected to a prower 15 via a crushed material feeder 14. The prower 15 plays the role of carrying out an air flow so that the crushed material is taken out from the processing container 1 by the air flow generated by its operation. In addition, the reference numeral 16 in the figure is an operation control panel for the proa 15, and the reference numeral 17 is a crushed product collection container.

With the above configuration, if the crushed material 2 is supplied from the hopper 11 to the processing container 1 while operating the linear motor 4.5, it will be finely crushed by the random movement of the working piece (not shown), as shown by the arrow P°. It advances toward the exit 9 while spirally moving inside the processing chamber 51. Then, the finely pulverized product is carried by the conveying airflow caused by the operation of the proar 15 and passes through the classification sieve 10 from inside the processing container 1 to the pulverizer 14. There, the air is separated from the airflow and collected into the collection container 17.

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

By the way, when the above-mentioned processing apparatus performs continuous pulverization of the crushed material, it may often become impossible to take out the crushed material. This phenomenon is caused by clogging of the classification sieve, so if the crushed material is pulverized in the processing vessel as described above and the crushed material is continuously taken out from the outlet 9 by air flow conveyance,
Coarsely crushed particles that cannot pass through the sieves of the classification sieve 10 adhere to the classification sieve 10 while being sucked and guided to the exit 10, causing clogging of the sieve. For this purpose, in the past, the processing operation was interrupted each time and the clogging of the classification sieve 10 was removed, but this work was not only troublesome, but also reduced the operating rate of the processing equipment. This improvement measure is highly anticipated.

This invention has been made in view of the above points, and includes:
The purpose is to
The present invention provides an operating system that can effectively prevent clogging of a classification sieve while the pulverizing operation of the granulated material continues.

This purpose is achieved by controlling the operation of the present invention so that the operation of the linear motor continues the crushing operation of the crushed material, while at the same time periodically stopping the airflow conveyance for taking out the crushed material for a short period of time. achieved.

Next, a 41st embodiment of a different driving method according to the present invention!
, 7I and the operation chart H shown in Figure 1ζ will be explained.

First, in the operation chart shown in Figure 4, the Proa 15 described in Figure 3 is controlled by the timer on the control board 16 so that it is periodically stopped for a short period of time during the lotus change.
The operation is controlled by periodically repeating N and OFF cycles. On the other hand, linear motor 4
, 5 are operated continuously while the processing equipment is in operation, and the hopper 1
The grinding material supplied from scratch is being crushed. With this operating system, the flow of the conveying air current stops when the prower 15 stops operating during the process i-turn. Therefore, the air flow iM of the crushed product is poetically interrupted, and the permeation of the crushed product through the classification sieve is stopped for a short period of time, but on the other hand, as the near motors 4 and 5 operate, The working pieces are performing random movements, and during this period, the working pieces and unpulverized materials repeatedly collide and rub against each other on the inner surface of the classification sieve 10, which may cause clogging. The fine particles adhering to the sieve surface are knocked off. As a result, even if a part of the classification sieve 10 is clogged in the previous operation cycle, it will be removed immediately, and in the next cycle, if the air flow conveyance is started when the operation of the proar 15 is restarted,
The classification sieve 10 normally performs its classification function and can smoothly take out crushed products.

The operation chart shown in FIG. 5 is a further development of the previous embodiment, and according to this embodiment, a reversible type is used for the main shaft shown in FIG. In addition, when the airflow conveyance is stopped for a short time, the operation of the proar 15 is controlled to be switched from normal to reverse. Therefore, during this period, contrary to the airflow conveyance of the crushed product, the outside airflow sucked into the proa 15 is blown from the outlet side of the processing container 1 toward the classification sieve lO as indicated by the arrow AI in FIG. Rare, full G)
Perform 10 backwashes. As a result, in addition to the knocking effect caused by the movement of the working pieces that have been completely distributed, the blowing of the backwash airflow AI acts, so that clogging of the classification sieve 10 can be reliably prevented.

In this case, in order to enhance the backwashing effect, it is recommended to prepare a detour in advance to bypass the dust collector 14, such as a bag filter, and open a valve inserted in this bypass. good. In addition, the above embodiments are all based on Proa 1.
5 was shown to turn ON and OFF or rotate forward and reverse, but instead of controlling the operation of Proa 15, a switching valve was connected in the middle of the ventilation pipe, and Proa 15 continued to operate. It is also possible to stop the conveying airflow or reverse the airflow by switching control of the switching valve in the same state.

As described above, according to the present invention, the random motion of the working piece that moves around inside the processing container of the electromagnetic pulverization processing device is skillfully utilized, and the material can be pulverized without stopping the operation of the processing device. It is possible to effectively remove or prevent clogging of the classification sieve while continuing the operation, thereby maintaining the normal function of the classification sieve and smoothly taking out the crushed products. Therefore, it is possible to improve the operational performance of the processing device.

[Brief explanation of the drawing]

Figure 1 is a diagram of the basic structure of the electromagnetic pulverization equipment, Figure 2
The figure is a sectional view taken along the arrow ■-■ in FIG. 1, FIG. 3 is a diagram showing the layout of a continuous processing type pulverization processing device, and FIGS. This is the driving chart 1 shown below. 1: Processing container, 2: Grinding material, 3: Working piece, 41
5': moving magnetic field generator, 8: crushed material inlet, 9: crushed material outlet, 10: classification sieve, 15 nib blower, A: conveying air flow.

Claims (1)

[Scope of Claims] 1) A processing container containing a large number of working pieces made of magnetic or non-magnetic conductive material, and the moving direction of the magnetic field of the processing container, which is placed oppositely on both sides with the container in between at the center. an electromagnetic type, comprising a pair of moving magnetic field generating devices in opposite directions, and pulverizing the crushed material put into the processing container by random movement of a working piece based on interaction with the moving magnetic field of the moving magnetic field generating device. It is a crushing processing device, and the processing container has a crushed material inlet and a crushed material outlet equipped with a classification sieve, and the crushed material that has passed through the classification sieve is taken out from the processing container by air flow conveyance l, and the processing container is a continuous type. An electromagnetic pulverization process that is characterized in that the pulverizing operation of the pulverized material continues, while the air flow conveyance for taking out the pulverized material is periodically stopped for a short period of time. Operation method of the device. 2. In the operating method described in claim 1, (1)
The vL electromagnetic pulverizer is characterized in that the airflow conveyance for taking out the crushed product is performed by the conveyance airflow generated by the operation of the prower, and the conveyance airflow by the prower is stopped when the airflow conveyance is periodically stopped. Processing equipment operation method. 3) In the operating system described in claim 1, the airflow conveyance for taking out the crushed material is carried out by the conveyance airflow generated by the operation of the prower, and when the airflow conveyance is periodically stopped, the airflow conveyance is performed by the prower. An operating system for a 'dL magnetic crushing processing apparatus, characterized in that the airflow is blown from the product outlet side of the processing container toward the classification sieve by reversing the conveying airflow.