KR20060082463A - Inner chamber for vibration mill, vibration mill and method for preparing powders using the same - Google Patents

Abstract

The present invention relates to an internal chamber for a vibration mill, a vibration mill and a powder manufacturing method using the same. More particularly, the vibration chamber of the vibration chamber in a vibration mill having a vibration chamber is provided. Internal chamber for a vibration mill having a predetermined distance from the inner surface and embedded therein, having a predetermined space therein, having at least one charging hole on the outside, and having a lid for hermetically sealing the charging hole, and a vibration mill including the same As a powder manufacturing method, it is possible to shorten the production time in the production of powder of the same level, to minimize impurities in the powder produced by using this, to activate the movement of the ball in the vibration mill to grind in the chamber during operation of the vibration mill Eliminates the sticking of the sieve, thereby increasing the yield of powder production.

Vibration Mill, Inner Chamber

Description

Inner chamber for vibration mill, vibration mill and powder manufacturing method using same {INNER CHAMBER FOR VIBRATION MILL, VIBRATION MILL AND METHOD FOR PREPARING POWDERS USING THE SAME}

1 is a photograph showing an example of a general vibration mill (Mill) applied to the present invention.

2 is a front schematic view showing a driving form of a vibration chamber of a general vibration mill applied to the present invention.

3 is a front schematic view showing the trajectory of the driving pattern according to the driving form of the vibration chamber of FIG.

Figure 4 is a schematic cross-sectional view showing the driving form in the state including the inner chamber in the vibration mill according to the present invention.

5 is a perspective view of one embodiment of an inner chamber of a vibration mill in accordance with the present invention.

6 is a photograph of another embodiment of an inner chamber of a vibration mill according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: vibration chamber 12: vibration chamber handle                 

14: vibration chamber center point 16: vibration chamber drive rotation axis

18: trajectory of the vibration chamber center point 20: the inner chamber

22: inner chamber lid

The present invention relates to an internal chamber for a vibration mill, a vibration mill, and a powder manufacturing method using the same. More specifically, the manufacturing time can be shortened in the production of powder of the same level. Minimize impurities in the powder mixed into the powder by impurities generated in the container, and activate the movement of the ball in the vibration mill, eliminating the phenomenon that the powder sticks in the chamber during the operation of the vibration mill, thereby increasing the yield of powder production. It relates to a vibration mill and a powder manufacturing method using the same.

In the case of pulverization or mixing of the general powder, a vibration mill may be used in a form that facilitates the rapid pulverization or mixing speed and the preparation of fine powder. Such a vibration mill is to be pulverized or mixed by vibrating the vibration chamber at high speed, but there are various shapes of the vibration chamber, but a cylindrical having a horizontal central axis such as a ball mill is most common. There are many forms, but the vibration through the circular motion is usually common.

A photograph of a general vibration mill is shown in FIG. 1, which is eccentric to the central axis 14 of the vibration chamber as described above, where a separate drive rotation shaft 16 exists and a circular motion is generated to generate vibration. The driving form of the vibration mill is shown in FIGS. Figure 3 shows the trajectory according to the driving of the vibration chamber to show that the up and down position of the vibration chamber is fixed and eccentric circular motion occurs.

However, since the vibration mill corresponds to a ball mill having a high energy, when the material of the chamber during milling is steel, the fracture toughness is high but wear resistance is low, and a considerable amount of impurities are mixed. In the case of ceramic materials such as zirconia having excellent abrasion resistance, cracks are generated by repeated collisions with balls during milling, and stress cracks are concentrated at these cracked areas, and cracks gradually propagate, causing brittle fracture or fatigue fracture. There is a problem in that the impurity particles of 5 to 20 μm size are mixed into the powder to lower the purity of the powder to be prepared.

In addition, depending on the characteristics of the powder or the mixed solvent during milling, the powder may adhere to the inner wall of the chamber during the milling process, and thus the material that adheres to the inner wall of the chamber may no longer be milled. There is a problem that the purity of the powder is lowered and the yield is also lowered.

This problem is more serious in the manufacture of nanopowders by Mechanochemical Process (MCP), which is one of the methods of preparing nanopowders, as well as in general grinding or mixing, in which MCP is replaced by mechanical energy. It is a method of forming a nanopowder by forming a chemical reaction corresponding to the reaction, because the chemical reaction corresponds to an exothermic reaction, the phenomenon that the starting material is attached to the inner wall of the chamber by the exothermic reaction more easily occurs.

In order to solve the problems of the prior art as described above, the present invention provides a vibration mill and a powder manufacturing method using the same to activate the movement of the ball in the vibration mill to minimize the phenomenon that the powder adheres to the inner wall surface of the chamber during operation of the vibration mill. It aims to provide.

In addition, an object of the present invention is to provide a vibration mill and a powder manufacturing method using the same to minimize the incorporation of impurities generated in the ball or chamber container into the powder in accordance with the operation of the vibration mill.

In addition, the present invention can reduce the production time in the production of the same level of powder, and an object of the present invention is to provide a vibrating mill and a powder production method using the same, which can increase the yield and purity of powder production.

In order to achieve the above object, the present invention

In the vibration mill (Mill) having a vibration chamber is embedded in the vibration chamber with a predetermined distance from the inner surface of the vibration chamber, and has a predetermined space therein, and has at least one charging opening on the outside, the charging hole It provides an inner chamber for a vibration mill having a lid for hermetically sealing.

In addition, the present invention

It provides a vibration mill including the above-described inner chamber for the vibration mill.                     

In addition to the present invention

It provides a powder manufacturing method, characterized in that for producing a powder using the vibration mill.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The internal chamber for the vibration mill (vibration mill) of the present invention is embedded in the vibration chamber with a predetermined distance from the inner surface of the vibration chamber in the vibration mill (Mill) having a vibration chamber, and has a predetermined space therein, It has at least one charging outlet on the outside, and has a lid having an airtight lid.

That is, as shown in FIG. 4, the present invention relates to an internal chamber provided separately in a vibration chamber vibrating by various driving methods, and the internal chamber of the present invention is fixedly provided in the vibration chamber. In addition, as shown in FIG. 4, the inner chamber has a predetermined distance from the inner wall of the vibrating chamber so that the inner chamber is separately generated as shown in FIG. 4 when the vibrating chamber is driven. Further, the separation distance is preferably 2 to 10 mm so as to smoothly rotate the inner chamber within a range that does not affect the vibration mill.

In this way, the inner chamber of the present invention can be rotated inside the vibration chamber, unlike the upper and lower fixed vibration chamber, so that even if the powder is stuck to the inner wall surface, the inner chamber portion where the powder is stuck is moved by the rotation of the inner chamber. At this time, the ball contained in the inner chamber is moved up and down in accordance with the movement of the vibration chamber, whereby the collision of the ball to the powder that is attached to the upper because the adhered materials fall down to make the milling do. In this case, since the ball is generally filled in the inner chamber by about 70 to 80% by volume, it is possible to collide with the upper part of the inner chamber by vibrating the vibration chamber as described above. By increasing, the above mechanism can be achieved.

In addition, as shown in Figure 5, the inner chamber for the vibration mill of the present invention may be provided with a charging inlet for charging a material, such as powder and a lid for hermetically sealing after charging, such a charging and sealing member is known Of course, you can use a variety of instruments.

Such a vibration chamber of the vibration mill (mill) to which the inner chamber of the present invention is applied may have various shapes, and preferably made of a cylindrical shape is preferable in terms of ease of vibration driving and fabrication. In this case, it is preferable that the inner chamber of the present invention included in the vibration chamber also has a cylindrical shape as shown in FIG. 5. Through this, the up and down rotation of the inner chamber can be smoothly rotated.

In addition, when the vibration chamber is cylindrical, it is preferable that the interior of the inner chamber of the present invention is also cylindrical or preferably the interior of the chamber is polygonal as shown in FIG. This makes the ball in the inner chamber more irregular movement to increase the milling effect. As a specific example of the said polygonal cylinder, the rectangular cylinder as shown in FIG. 6 is mentioned.

In addition, the material of the inner chamber for the vibration mill of the present invention is preferably a synthetic resin in order to meet the requirements of both fracture toughness and wear resistance. The synthetic resin has a high toughness, has excellent wear resistance to smooth surfaces such as balls, and is a material that easily absorbs collision energy, and thus is suitable as a material of the inner chamber for the vibration mill of the present invention. As such synthetic resins, various known synthetic resins may correspond to all of them. Preferably, the high-strength synthetic resin is preferable among the synthetic resins, and more preferably, the high-strength synthetic resin is MC nylon or UHMW PE. Through this, it is possible to fundamentally prevent the incorporation of the impurity particles into the powder caused by breakage of the inner wall of the chamber or breakage of the ball.

The present invention also provides a vibration mill, characterized in that it comprises the aforementioned internal chamber for the vibration mill in the vibration chamber. This may include a vibration mill having a variety of known driving mechanisms, preferably, as shown in Figures 2 to 3, the rotating shaft with respect to the central axis of the vibration chamber in a state that the upper and lower positions of the vibration chamber is fixed It is good for the rotation of the inner chamber to have a drive mechanism in which the spaced apart vibration chamber has an eccentric circular motion.

In addition, the present invention provides a powder manufacturing method, characterized in that the powder is prepared using a vibration mill as described above, which is not only the production of fine powder through known grinding, but also the heterogeneous fine powder using a vibration mill. And pulverization and mixing of mixed or heterogeneous powders, and especially, in the production of nano powders, which are in the spotlight in recent years, mechanochemical processes (MCP :) used together with chemical reduction, microemulsion, and electrolysis. Mechanochemical process can also be applied to the vibration mill of the present invention to prepare a nanopowder. Particularly, in the case of MCP, as the above-described substitution reaction during the MCP process is exothermic, the phenomenon that the powder adheres to the inner wall surface according to the heat of reaction is more serious. Therefore, the improvement effect may be increased when the present invention is applied. have. An example of such MCP application is the production of silver nano powder.

According to the inner chamber of the vibration mill, the vibration mill and the powder manufacturing method using the same according to the present invention, the powder is applied to the inner wall surface of the chamber during the operation of the vibration mill by activating the movement of the ball in the vibration mill and enabling the rotational movement in the chamber. Minimize the sticking phenomenon to maximize the grinding and mixing effect.

In addition, according to the present invention, since the mixing and pulverization is performed while minimizing the breakage caused by the collision between the ball and the chamber container according to the operation of the vibration mill, there is an effect of minimizing the mixing of the impurity powder caused by the breakage caused by the collision.

In addition, in the same level of powder production by the activated milling mechanism as described above, it is possible to shorten the production time, thereby improving productivity, and to increase the yield and purity of powder production compared to the conventional vibration mill. There is this.

The present invention described above is not limited to the above-described detailed description and the accompanying drawings, and various modifications and changes of those skilled in the art can be made without departing from the spirit and scope of the present invention as set forth in the claims below. Changes are also included within the scope of the invention.

Claims (11)

In the vibration mill (Mill) having a vibration chamber is embedded in the vibration chamber with a predetermined distance from the inner surface of the vibration chamber, it has a predetermined space therein, has at least one charging hole on the outside, the charging hole The inner chamber for the vibration mill having a lid for hermetically sealing. The method of claim 1, When the vibration chamber is cylindrical, the inner chamber for the vibration mill, characterized in that the outer cylinder is also cylindrical. The method of claim 2, The interior of the inner chamber is a vibration mill inner chamber, characterized in that the cylindrical or polygonal cylinder shape. The method of claim 1, The inner chamber is a vibration mill inner chamber, characterized in that the synthetic resin. The method of claim 4, wherein The synthetic resin inner chamber for the vibration mill, characterized in that the MC nylon or UHMW PE. Vibration mill, characterized in that it comprises the vibration chamber inner chamber of any one of claims 1 to 5 in the vibration chamber. The method of claim 6, The vibration mill is a vibration mill, characterized in that the vibration chamber has a drive mechanism for the eccentric circular motion is fixed up and down position. The method of claim 7, wherein The clearance of the predetermined interval is a vibration mill, characterized in that 2 to 10 mm. A powder manufacturing method, characterized in that for producing a powder using the vibration mill of claim 6. A powder manufacturing method comprising producing a powder using the vibration mill of claim 7. The method of claim 10, The powder production method is characterized in that the production of nano-powder by the Mechanochemical Process (MCP).

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