JPS58210839A - Working piece of electromagnetic agitating and mixing device - Google Patents

Abstract

PURPOSE:To obtan titled working piece that reacts and corrodes the object to be processed by covering the metal of the body of a working piece which is contained in a processing vessel together with the object with chemically inactive material. CONSTITUTION:In a device that puts a working piece 3 made of magnetic material or non-magnetic conductive material in a processing vessel 1 together with an objet 2 to be processed, applies shifting magnetic fields phi1, phi2 from outside by shifting magnetic field generator 4, 5, and agitates and mixes the object 2 by giving random motion to the working piece 3 by electromagnetic force, the metal body 31 of the working piece is covered 32 with chemically inactive material by coating fluororesin etc. This cover 32 prevents corrosion, and in addition, functions as a reinforcement and a buffer. The cover 32 can be formed by sealing the body 31 is a tube made of fluororesin and sticking fast by thermal contraction.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention accommodates a workpiece made of a ferromagnetic material or a non-magnetic conductive material together with a workpiece such as a liquid, powder, or gas in a processing container. The present invention relates to a working piece of an electromagnetic stirring/mixing device that performs processing such as mixing and stirring of the object to be processed by applying a moving magnetic field from the outside to cause violent random motion in the working piece.

As this type of electromagnetic processing device, Fig. 1 and Fig. 2 ζ
Something like this has already been proposed. In the figure, reference numeral 1 denotes a processing container containing a large number of working pieces 3 made of ferromagnetic material as well as a liquid to be stirred as an object 2 to be processed. Here, two moving magnetic field generators 4.5 are arranged facing each other, 71
The moving magnetic field of m is ψ1. As shown by ψ2, they are set in opposite directions. This moving magnetic field generating device 4.5 is a so-called linear motor (known as such, for example, a three-phase winding, a coil on the iron core side that moves l11j16 to the iron core 7 in the same way as a rotating machine). A moving magnetic field ψ receives power from a slot (consisting of a power supply).
1゜ψ: is generated. Further, as shown in FIG. 3, the working piece 3 is made of a spindle-shaped cylindrical body made of a ferromagnetic material such as an iron alloy or ferrite, or a non-magnetic conductive material such as copper.

η) is placed in the moving magnetic fields ψl, ψ2 due to the configuration
Magnetization or eddy current is generated in the working piece 3, and based on the interaction with the moving magnetic field (electromagnetic force acts, this causes the working piece 3 to move in the direction of the moving magnetic field ψ1.ψ2
The working piece 3 is subjected to translational force, floating blade, and rotational torque caused by rotation around the center of gravity.Furthermore, collisions between the working pieces, collisions between the working pieces and the container wall, etc. are added, and as a result, the working piece 3 complex 7 in 1
1) Generate intense random motion. This random movement stirs the liquid and the powder.

Mixing operations, mixing of gas or solid objects into liquid, #solution operations, etc. are performed. In this case, especially from the point of view of motion caused by electromagnetic force, a working piece that has high hysteresis characteristics and is made of, for example, an iron alloy similar to that of a permanent magnet, has a hysteresis loop that has an area of Since a magnetic torque proportional to is generated, active motion can be obtained even in a liquid with relatively high viscosity.

However, when the working piece 3 made of a metal material such as a ferromagnetic material shown in FIG. If the material is chemically active, a chemical reaction may occur between the two, or the working piece itself may be corroded, which is an undesirable phenomenon. Additionally, such ferromagnetic materials are generally brittle and have low impact resistance.

Collisions between working pieces may cause damage or damage.

This invention is based on the above-mentioned points, and its purpose is to eliminate the risk of causing a chemical reaction with the object to be treated and to have excellent impact resistance. The object of the present invention is to provide a working piece for a tortoise-magnetic stirring and mixing device.

From this invention number, the object is achieved by coating the surface of the working piece body with a chemically inert material such as fluororesin.Hereinafter, embodiments of the present invention will be described based on the drawings. As shown in FIG. 4, the working piece 3 includes a working piece main body 31 made of a ferromagnetic material or the like, and a coating layer 32 of a chemically inert material covering the entire surface of the working piece main body 31. It consists of Covering layer 3
As an example of No. 2, a fluororesin having chemically inert properties is used.

This is coated on the surface of the working piece main body 31 by an appropriate means to form a coating layer 32. As another example, the working piece main body 31° is sealed in a tube made of fluororesin prepared in advance, and then the resin is heat-shrinked by heating to tightly cover the surface of the working piece 31 with the tube. Then, the coating layer 328 is formed.

By using the working piece with the above configuration, the surface of the working piece main body 31 made of metal such as ferromagnetic material is not exposed to the outside, and there is no possibility that a chemical reaction will occur with the object to be processed 2. (Become.

In addition, the resin coating layer 32 of the working piece 3 plays the role of reinforcing and cushioning the working piece main body 31, and has the effect of increasing the impact resistance of the working piece 3. This invention provides a working piece with high practical value. 0 who can provide pieces

[Brief explanation of the drawing]

Fig. 1 is a diagram of the principle configuration of an electromagnetic stirring and mixing device, Fig. 2 is a sectional view taken along the arrow nn in Fig. 1, Fig. 3 is an external perspective view of a conventional working piece, and Fig. 4 is a diagram of the present invention. FIG. 2 is a cross-sectional view of a working piece according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Processing container, 2... Processing object, 3... Working piece, 4.5... Moving magnetic field generator, 31...
- Working piece body, 32...Covering layer of chemically inert material, ψ1. ψ2...moving magnetic field. T11 Fang 2 eyes 3 days old Figure 4

Claims (1)

[Claims] 1) A working piece made of a magnetic material or a non-magnetic compound material is housed together with the object to be processed in a processing container, and a moving magnetic field is applied to the processing container from the outside. The working piece is stirred and mixed by causing random motion in the working piece using the ridge magnetic force based on the interaction with the moving magnetic field. 1. A working piece of a magnetic stirring and mixing device characterized by being coated with a chemically inert material. 2. An electromagnetic stirrer, characterized in that the working piece' according to claim 1 is coated with a fluororesin on the surface of the working piece body;
Working piece of mixing equipment. 3) In the working piece described in claim 1,
The electromagnetic stirring and mixing method is characterized in that the working piece body is sealed in a fluororesin tube, and then the fluororesin is heat-shrinked to closely cover the surface of the working piece body with the tube. Equipment φWaheng