JPH0225481Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a horizontal dry media type grinding mixer.

[Conventional technology]

Hitherto, this type of horizontal dry media type grinding and mixing machine has been known as disclosed in Japanese Patent Publication No. 43051/1983.
This is a method in which the rod-shaped or plate-shaped stirring body does not move significantly in a direction parallel to the rotation axis, and substantially only gives circular motion.

[The problem that the idea aims to solve]

This invention aims to provide a mixer that enhances the mixing effect by promoting the irregular movement of the media, and further improves the grinding effect by forming dense areas of the media in the axial direction.

[Means to solve the problem]

The model dry media type grinding mixer of this invention is
A rotating shaft 2 is supported in the horizontal direction within a horizontally arranged cylindrical tank 1, a plurality of stirring bodies 3 are fixed at right angles to the rotating shaft 2 at intervals, and a media is placed inside the cylindrical tank. In a dry media type pulverizing mixer in which air is caught between the crushed particles and the crushed particles are pulverized in a fluidized state, one of the flat stirring bodies 3A, 3A', 3A'', 3C~
3F and the other stirring body 3B, 3B' adjacent to this,
3B'', 3K to 3N are each formed as a unit block, and the stirring bodies of one unit block and the other unit block are arranged on the axis so that they are oriented alternately in different radial directions, and one stirring body is aligned with the axis line. The other stirring body is mounted at the same angle of inclination in the direction opposite to the inclination angle of the one stirring body, and a high density area of media is provided between each unit block. It is characterized by being formed.

〔Example〕

First, the basic configuration of the pulverization mixer is that a cylindrical tank 1 is arranged horizontally, a pulverized material inlet 5 is provided in one upper part, and a media 10 and the same are provided in the other lower part. A separator section 6 for diameter sorting that prevents the passage of crushed materials with a particle size larger than the diameter is arranged, and an outlet 7 for discharging the crushed materials that have passed through the separator section 6 to the outside is installed directly below the separator section 6. . The tank 1 is constructed so that cooling water 11 can be filled into the circumferential wall of the tank 1 as required.
The cooling water 11 is sucked into the tank 1 through the water supply port 8, cools the tank 1 from the outer circumference, and then is discharged through the drain port 9, so that it can be used for circulation. A rotating shaft 2 rotated by a drive device 4 is provided in the tank 1 in a horizontal direction. Stirring bodies 3, which will be explained later in an embodiment, are fixed on the rotating shaft 2 at approximately equal intervals. A media 10 for grinding the crushed material supplied from the supply port 5 is housed in the tank 1 between the stirring bodies 3.
This media 10 has a substantially spherical shape and is made of steel or the like.

In each example described below, the configuration other than the stirring body 3 will be omitted, and the stirring body 3 shown in FIG. 1 will be replaced with the stirring body of each example.

Figures 2a and 2b show a first embodiment of this invention.

In this embodiment, one plate-shaped stirring body 3A and the other plate-shaped stirring body 3B are each formed as a unit block, and are attached adjacent to the rotating shaft 2.
One agitation body 3A is provided in a straight line on one side and the other side in the diametrical direction passing through the center of the rotary shaft 2, and applies a moving force to the media 10 in the forward direction a when the rotary shaft 2 rotates. It is mounted at an angle to the axis. The other stirring body 3B is the stirring body 3
It is attached to the rotating shaft 2 at a displacement of 90 degrees with respect to A, and is attached at the same angle of inclination in the opposite direction to that of the agitating body 3A, so that when the rotating shaft 2 rotates, the media 10 moves in the backward direction b. Grants movement power.
The stirring body 3A and the stirring body 3B are arranged in the axial direction of the rotating shaft 2 as a unit block.

Next, the action will be explained.

When the rotating shaft 2 is rotated in one direction by the drive device 4, crushed material (not shown) is fed from the metering feeder into the tank 1 through the supply port 5, and the crushed material is stirred by the stirring body 3A on one side of the unit block. At the same time, it is mixed with the media 10 and subjected to a grinding action by the media 10. The media 10 performs circular motion by rotation of one stirring body 3A and the other stirring body 3B, and as shown in FIG. 2a,
The stirring body 3A gives a moving force to the media 10 in the forward direction a, and the stirring body 3B gives the media 10 a moving force in the backward direction b.
Since the media 10 gives a moving force of , the stirring body 3
The media move forward and backward repeatedly between the stirring bodies 3A and 3B, and the advancing media and the retreating media gather near the middle between the stirring bodies 3A and 3B, so that a high-density area is formed here. Grinding material is also agitator 3A
While repeating advance and retreat between the agitator 3B and the agitator 3B, the media undergoes rapid grinding action, particularly in the high-density areas of the media, to become fine. Media is agitator 3A
Since the media are repeatedly moved forward and backward in the area of the unit block consisting of the agitator 3B and the agitator 3B, the media will not be unevenly distributed in the direction of the outlet 7 of the tank 1 (to the right of the tank 1).

While the crushed material is being subjected to the grinding action, the crushed material gradually becomes finer, and air is drawn in between the crushed material particles, resulting in a state where a thin layer of air is interposed between the particles. Because of this, the crushed material gradually assumes a fluidized state. Since there is a head difference between the inlet 5 and the outlet 7 of the tank, the finely divided particles move slowly from the inlet 5 to the outlet 7, just like flowing river water. Then, it passes through the separator section 6 and is taken out from the outlet 7.

Figures 3a and 3b show a second embodiment of this invention.

In this embodiment, one of the flat stirring bodies 3A',
3A'' and the other stirring bodies 3B', 3B'' are each formed as a unit block, and one stirring body 3A', 3B'' is formed as a unit block.
The two stirring bodies 3B' and 3A'' are fixed at a predetermined interval on the rotating shaft 2 while being displaced 90 degrees from each other, and the other stirring bodies 3B' and 3
The two bodies 3A' and 3A'' are fixed adjacent to the rotating shaft 2 with 90 degree displacement from each other.One of the agitating bodies 3A' and 3A'' cooperates to move the media in the forward direction a when the rotating shaft 2 rotates. The other stirring body 3
B' and 3B'' are attached at the same angle of inclination in opposite directions so as to enable a moving force to be applied to the media in the backward direction b.

One stirring body 3A', 3A'' and the other stirring body 3B',
As in the first embodiment, a high density area of the media is formed in the middle area of 3B'', so that a rapid grinding action is carried out in this high density area.

Figures 4a and 4b show a third embodiment of this invention.

In this embodiment, the number of stirring bodies is increased and four stirring bodies are constructed as one unit block. That is, one stirring body consists of 3C, 3D, 3E, and 3F, and the other stirring body consists of 3K, 3L, 3M, and 3N. Each stirring body is arranged with an angular displacement difference of 45 degrees. The stirring bodies 3C to 3F and 3K to 3N are configured such that a protruding length l ₁ on one side in the diametrical direction and a protruding length l ₂ on the other side in the diametrical direction are different from each other with respect to the rotating shaft 2 .

Furthermore, the stirring bodies 3C and 3K are attached so that the protruding length _l1 on one side and the protruding length _l2 on the other side are arranged in opposite directions. and stirring body 3C~3
The inclination direction of the rotating shaft 2 of F with respect to the axis and the stirring body 3
The directions of inclination with respect to the axis of the rotating shaft 2 of K to 3N are configured to have the same inclination angle in mutually opposite directions.

When the rotating shaft 2 rotates, the stirring bodies 3C to 3F apply a moving force in the forward direction a to the media, and the stirring bodies 3K
~3N gives the media a moving force in the backward direction b,
A high density area of media is formed between the stirring body 3F and the stirring body 3K. Furthermore, each stirring body 3C~3
Since the protrusion length l ₁ on one side in the diametrical direction and the protrusion length l ₂ on the other side in the diametrical direction are different, the axial speed of the media near the center of the stirring body and the vicinity of the tip of the stirring body Since the axial speed of the media in the axial direction changes irregularly and in a complex manner, the mixing effect is improved.

[Effect of the invention] The media performs circular motion due to centrifugal force, and moves forward and backward between one stirring body and the other stirring body.
The mixing effect improves because it repeatedly retreats and moves irregularly.

Since a high density area of media is formed between one stirring body and the other stirring body, the crushing effect is improved.

Since the media repeatedly move forward and backward between one stirring body and the other stirring body, the media are not unevenly distributed on the outlet side of the tank.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a horizontal dry media type grinding mixer, which is the basic body of each embodiment of this invention;
Figure a is a partial side view showing the structure of the stirring body in the first embodiment of this invention, Figure 2 b is a view taken in the direction of the arrow in Figure 2 a, and Figure 3 a is the stirring body in the second embodiment of this invention. Figure 3b is a partial side view showing the configuration of the third
Fig. 4a is a partial side view showing the structure of the stirring body in the third embodiment of this invention;
Figure b is a view taken in the direction of the arrows in Figure 4a. 1... Tank, 2... Rotating shaft, 3... Stirring body,
3A, 3A', 3A'', 3C, 3D, 3E, 3F...
...One stirring body, 3B, 3B', 3B'', 3K, 3
L, 3M, 3N...the other stirring body, 10...the media.

Claims (1)

[Claims for Utility Model Registration] 1. A rotating shaft 2 is supported in the horizontal direction within a cylindrical tank 1 arranged horizontally, and a plurality of stirring bodies 3 are fixed at right angles to the rotating shaft 2 at intervals. In a dry media type grinding mixer in which a media is housed in a cylindrical tank and air is drawn between the particles of the powder to make the powder fine in a fluidized state, one of the flat agitators 3A is used. ;3
A', 3A''; 3C to 3F and the other stirring body 3B adjacent thereto; 3B', 3B''; 3K to 3N are each formed as a unit block, and each stirring body of one unit block and the other unit block are arranged on the shaft so that they are arranged in alternating radial directions, one stirring body is installed at an inclination angle with respect to the axis, and the other stirring body is installed in a direction opposite to the one inclination angle. A horizontal dry media type grinding mixer characterized in that the media are installed at the same angle of inclination so that a high density area of media is formed between each unit block. 2 Stirring bodies 3C to 3F; 3K to 3N Utility model registration claim 1 configured such that the protrusion length l ₁ on one side and the protrusion length l ₂ on the other side are different with respect to the rotating shaft 2 Horizontal dry media type grinding mixer as described in Section 1.