Background Art In general, a mixing apparatus shown in Fig. 1 and Fig. 2 is used for mixing homogeneously various kinds of solid powder material, and mixing and dispersing homogeneously solid powder with a solvent such as water, or crushing solid powder to below 1. Ou, and, mixing and dispersing homogeneously the crushed powder, and mixing powder with powder, and dispersing a cohesive particle.

A mixing apparatus, as shown in Fig. 1, put a mixture inside a circular rotation body 1 which is horizontally rotating and revolve a ball media or a rod media for improving mixture and dispersion.

Namely, as shown in Fig. 1, the rotation body 1 passes through a pivot 80 horizontally, and the pivot 80 rotates and receives a turning force of a motor 72 from a pulley 76 and a pulley 74. The pivot 80 is supported from a supporter 70, and the pulley 74 and the pulley 76 rotate reciprocally through a belt 78.

A mixing apparatus, as shown in Fig. 2, includes a separate pivot 5 inside a

perpendicular cylinder 4, and a large number of protrusions 6 provided with perpendicular to the separate pivot 5. The mixing apparatus put a mixture (namely, a ball 2 and a solvent 3) and rotates a ball media for improving mixture and dispersing.

Meanwhile, a mixing apparatus includes a separate pivot inside a even cylinder, and a protrusion provided with perpendicular to the separate pivot. The mixing apparatus put a mixture and rotates a ball media for improving mixture and dispersing.

Above mixing apparatus crushes or disperse powder between a ball and a ball through mechanical power, but the mixing apparatus is not efficient to separate a cohesive particle.

Disclosure of the Invention To solve the above problems, the present invention provides a mixing apparatus promoting the maximum of mixture and dispersion by facilitating separation of a cohesive particle.

A mixing apparatus according to an embodiment of the present invention comprises a ball box including a mixture, a ball mill including a cylinder which is including the ball box, and a large number of ultrasonic generation means provided with outside the cylinder and transmitting ultrasonic to the ball mill when a mixture is mixed in the ball mill.

A mixing apparatus according to another embodiment of the present invention includes an ultrasonic generator including a predetermined means of generating ultrasonic, a fixed frame provided with the ultrasonic generator, a motor provided with upside of the fixed frame, a driving pulley which is connected to the motor, a sub-driving pulley

provided with a predetermined distance with a perpendicular fall from the driving pulley, a belt provided with between the driving pulley and the sub-driving pulley, a bar which is fixed across a side of the lower part of the fixed frame, a roller provided with the other side of the lower part of the fixed frame, a rotation bar provided with between the roller and the sub-driving pulley, and a ball box provided with between the bar and the rotation bar for rotating with the rotation bar.

Brief Description of the Drawings Fig. 1 shows an embodiment of previous ball mill.

Fig. 2 shows an alternative embodiment of previous ball mill.

Fig. 3a and Fig. 3b show constitution of a mixing apparatus according to the first embodiment of the present invention.

Fig. 4 shows constitution of a mixing apparatus according to the second embodiment of the present invention.

Fig. 5 shows constitution of a mixing apparatus according to the third embodiment of the present invention.

Fig. 6 shows constitution of a mixing apparatus according to the fourth embodiment of the present invention.

Fig. 7 shows dielectric loss data according to the composition of the previous ball mill and the mixing apparatus according to the fourth embodiment shown in Fig. 6.

Preferred Embodiments of the invention The preferred embodiments of the present invention are described below in detail,

with reference to the drawings.

Fig. 3a and Fig. 3b show constitution of a mixing apparatus according to the first embodiment of the present invention. The mixing apparatus shown in Fig. 3a and Fig. 3b includes a ball box 12 of which diameter is smaller than diameter of a cylinder 10, and the ball box 12 is filled with a large number of balls 2. A pipe is provided with outside the cylinder 10 for input and output of a cooling solvent or cooling water. Therefore, the space between the cylinder 10 and the ball box 12 is filled with the cooling water or the cooling solvent, and a large number of ultrasonic generation means 14a-14f are provided with outside the cylinder 10, and the ball box 12 is filled with a large number of balls 2 and predetermined water or a solvent 3.

According to the constitution of the first embodiment of the present invention, when the ball box 12 rotates, balls 2 which are rotating with the ball box 12 are crushed and dispersed to solid powder. Then, an ultrasonic generated from the ultrasonic generation means 14a-14f is transmitted to inside the ball box 12, and the solid powder material inside the ball box 12 receives a vibration of the solvent 3 so that a cohesive particle is simply separated, and the crushed particle is mixed and dispersed through the ultrasonic vibration to maximize a mixture and dispersion.

Fig. 3a and Fig. 3b show a structure of a cylinder. But the structure of the cylinder shown in Fig. 3a and Fig. 3b can be used instead of the structure of previous cylinder.

Fig. 4 shows constitution of a mixing apparatus according to the second embodiment of the present invention. A mixing apparatus shown in Fig. 4 includes a ball box 26 of which diameter is smaller than diameter of a cylinder 24, and the ball box 26 is filled with a large number of balls 2, and the space between the cylinder 24 and the ball

box 26 is filled with water or a solvent 3.

In addition to, a motor 20 having a separate pivot 22 is provided with predetermined distance away from the upper part of the ball box 26, and a large number of intrusions 28 are provided with perpendicularly to the pivot 22, and a large number of ultrasonic generation means 30a-30f are provided with outside the cylinder 24.

According to the constitution of the second embodiment of the present invention shown in Fig. 4, the pivot 22 rotates in predetermined direction by driving the motor 20, and the intrusions 28 on the pivot 22 provided with the ball box 26 rotates together.

Thus, balls 2 inside ball box 26 are crushed and dispersed to solid powder, an ultrasonic generated from the ultrasonic generation means 30a-30f is transmitted to inside the ball box 26. And then, the solid powder material inside the ball box 26 receives a vibration of the solvent 3 so that a cohesive particle is simply dispersed, and the crushed particle is mixed and dispersed through the ultrasonic vibration to maximize a mixture and dispersion.

Fig. 5 shows constitution of a mixing apparatus according to the third embodiment of the present invention. A mixing apparatus shown in Fig. 5 includes a ball box 42 of which diameter is smaller than diameter of a cylinder 40, and the ball box 42 is filled with a large number of balls 2, and the space between the cylinder 40 and the ball box 42 is filled with water or a solvent 3.

And, a pivot 44 is horizontally provided with inside the ball box 42 and a large number of disks 46 for crushing on the pivot 44 are pressed and provided with a regular distance. In addition to, a large number of ultrasonic generation means 48a-48f are provided with outside the cylinder 40.

As not shown in Fig. 5 but shown in Fig. 4, a motor rotating the pivot 44 is included.

According to the third embodiment of the present invention shown in Fig. 5, when the pivot 44 inside the ball box 42 rotate, the disk rotates together for crushing on the pivot 44.

Then, balls 2 inside ball box 42 are crushed and dispersed to solid powder, the ultrasonic generated from the ultrasonic generation means 48a-48f is transmitted to inside the ball box 42. And then, the solid powder material inside the ball box 42 receives a vibration of the solvent 3 so that a cohesive particle is simply dispersed, and the crushed particle is mixed and dispersed through the ultrasonic vibration to maximize a mixture and dispersion.

Fig. 6 shows constitution of a mixing apparatus according to the fourth embodiment of the present invention. A mixing apparatus shown in Fig. 6 includes an ultrasonic generator 60, a fixed frame 62, a motor 50, a driving pulley 52, a sub-driving pulley 54, a belt 56, a bar 64, a roller 66, a rotation bar 68 and a ball box 58.

The ultrasonic generator 60 includes a predetermined means of generating ultrasonic, and the fixed frame 62 is provided with the ultrasonic generator 60. The motor 50 is provided with the fixed frame 62 and the driving pulley 52 is connected to the motor 50, and the sub-driving pulley 54 is provided a predetermined distance with a perpendicular fall from the driving pulley 52. The belt is provided with between the driving pulley 52 and the sub-driving pulley 54, and the bar 64 is fixed across a side of the lower part of the fixed frame 62. The roller 66 is provided with the other side of the lower part of the fixed frame 62, and the rotation bar 68 is provided with between the roller 66 and the

sub-driving pulley. The ball box 58 is provided with between the bar 64 and the rotation bar 68 for rotating with the rotation bar 68, and the ball box 58 is filled with a large number of balls and a solvent such as water.

In addition to, the cylinder shown in Fig. 6 can be operated at a state sunken under ultrasonic generator 60, and the ultrasonic generator 60 can be moved up to down, and the fixed frame 62 can be moved up to down.

As according to constitution of the mixing apparatus of the fourth embodiment shown in Fig. 6, if the motor 50 drives, the driving pulley 52 provided with axis of the motor 50 rotates, and turning force of the driving pulley 52 is transmitted to the sub-driving pulley 54 through the belt 56.

If the sub-driving pulley 54 rotates to the same direction with the driving pulley 52, the rotation bar 68 provided with between the sub-driving pulley 54 and the roller 66 rotates and the ball box 58 rotates to the opposite direction with the rotation bar 68.

Therefore, balls in the ball box 58 are crushed and dispersed to solid powder materials. Then, an ultrasonic generated from the ultrasonic generator 60 is transmitted to inside ball box 58, and the solid powder materials in the ball box 58 receives the vibration of the solvent to facilitate dispersion of the cohesive particle, and the crushed particle is mixed and dispersed through the ultrasonic vibration to maximize a mixture and dispersion.

Fig. 7 shows dielectric loss data according to the composition of the previous ball mill and the mixing apparatus according to the fourth embodiment shown in Fig. 6.

The condition of the experiment is below, and the composition ratio of a dielectric material was 0. 5parts ZnO and 0.25parts NiO to main material (0. 78mole Zr02+ 0.22mole SnO2+ 1. 0moleTiO2).

0. 8parts dispersion powder and 60parts distilled water for the dielectric material were put in a previous mixing apparatus shown in Fig. 1 and a mixing apparatus shown in Fig. 6. And then, mixed liquefied slurry was agitated with 5parts PVA (Poly Vinyl Alcohol) for 30minutes in separate agitation apparatus. Drying, crushing, shaping, and plasticity were performed for 8 hours at 110°C, and a dielectric loss was measured and analyzed.

The result of the analysis shows that when a mixing apparatus of the present invention operates for 3 hours, it has same result with an operation of previous mixing apparatus.