JPS637302Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The present invention relates to a stirring device that efficiently stirs and mixes two or more types of powder materials that require mixing operations. It is an object of the present invention to provide a stirring device capable of quickly and efficiently performing stirring and mixing work of powdered materials by preventing the materials from forming into lumps during mixing.

[Prior art]

Conventionally, when stirring and mixing two or more types of powder materials, there was a drawback that if the powder materials became moist, some of the powder materials would form small lumps during the mixing process, making it impossible to perform the stirring and mixing process smoothly. . For this reason, the powder material lumps were taken out from the powder material after mixing, crushed on a thin wire mesh and sieved, and manually mixed with the powder material that had already been mixed. Stirring and mixing powder materials is very time-consuming and troublesome, and it is difficult to stir and mix a plurality of types of powder materials evenly and uniformly.

[Purpose of invention]

The present invention eliminates the above-mentioned drawbacks and prevents part of the powder materials from forming lumps due to moisture during stirring and mixing of two or more types of powder materials, so that the stirring and mixing of the powder materials is always done evenly and smoothly. The purpose of this invention is to provide a stirring device that can perform the following steps.

[Summary of the idea]

In the present invention, a rotary blade is attached to one or both axial ends of the stirring drum so as to be able to rotate at high speed, and a lump of powder material is crushed by the rotary blade to efficiently perform the stirring and mixing operation of the powder material. During the mixing operation, the powder material is prevented from entering into a bearing member supporting a drive shaft to which the rotary vane is attached, so that the rotary vane is smoothly rotated at high speed.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 2 and 3, reference numeral 1 denotes a base plate made of angle steel or the like in a rectangular shape, and this base plate 1 has side plates 2 at both left and right ends with a U-shaped planar shape and standing upright. It is swingably attached to a support base 4 like a seesaw via a support shaft 3 pivotally supported at the center of 2'. 5 is a rotating shaft rotatably attached to the side plates 2, 2', and the side plates 2, 2' of this rotating shaft 5
Friction wheels 6 are attached to the ends protruding from each side, and pulleys 7 are attached to the insides of the side plates 2, 2'. Reference numeral 8 denotes an electric motor of a speed reduction device attached to the back surface of the base plate 1. The electric motor 8 and the pulley 7 are drivingly connected by a belt 10 passing through a through hole 9 in the base plate 1 to rotate the friction wheel 6. 11 is a crank mechanism, and a connecting tool 12 is attached to the end of the base plate 1.
, an electric motor 13 with a speed reduction device, and a link 1 drivably connected between the connecting tool 12 and the electric motor 13.
1a and 11b, and the rotation of the electric motor 13 causes the base plate 1 to swing around the support shaft 3 like a seesaw. 14 is a hollow cylindrical stirring drum mounted rotatably on the friction wheel 6, protrusions 15 are provided on both sides of its outer circumference in close proximity to the friction wheel 6, and the stirring drum 14 is mounted on the inner peripheral surface. A scraping plate 16 is disposed along the axial direction of the holder 14b, and a cover 17 is provided at each opening 14a at both ends.
It is removably attached by. As shown in FIG. 1, reference numeral 18 denotes a rotary blade provided inside one opening 14a of the stirring drum 14.
It is attached to the tip of a drive shaft 20 that is rotatably supported by a bearing member 19 fixed to the inner surface of the drive shaft 7 . Next, the structure of the bearing member 19 will be explained with reference to FIG. This bearing member 19 includes a bearing 19a that supports the drive shaft 20 inside, and an oil seal 19b arranged on the side of the bearing 19a located inside the stirring drum 14.
The end face of the bearing member 19 located inside the stirring drum has excellent heat resistance and wear resistance in a state where the drive shaft 20 is rotatably protruded, and
It is closed by a closing plate 21 made of synthetic resin with low frictional resistance, and a nut 22 is screwed onto the protruding end of the bearing member 19 that protrudes outward from the cover 17 to close the bearing member 19. It is fixed to the cover 17. On the other hand, the drive shaft 20 protruding from the closing plate 21 of the bearing member 19 is integrally provided with a collar 20a in close contact with the end surface of the closing plate 21, and the collar 20a of the drive shaft 19 and the rotating blade 18 are connected to each other. In between, a rotating plate 23 faces the blocking plate 21 and surrounds the collar 20a, with a small gap (approximately 0.1 to 0.2 mm) between the rotating plate 23 and the blocking plate 21. It is screwed on. Note that a protruding end of the drive shaft 20 that protrudes outside the stirring drum 14 is connected via a universal joint 24 to an electric motor 25 that rotates the rotary blade 18 at high speed. 26 is a mounting frame attached to the side plates 2, 2' so as to surround the stirring drum 14;
The rotating blade 18 is installed at the end of the rotating blade 18 mounting side.
The electric motor 25 that rotates the is attached via a mounting plate 27.

Next, the operation will be explained.

Now, when a plurality of types of powder materials are respectively stored in the stirring drum 14 and the stirring drum 14 is rotated by the electric motor 8 via the friction wheel 6, the powder materials are scraped up by the scraping plate 16 and raised to a certain height. The mixture is mixed by repeating the process of falling when it reaches . At this time, since the stirring drum 14 swings like a seesaw around the support shaft 3 by the crank mechanism 11 as shown by the two-dot chain line in FIG. 3, the powder material also reciprocates in the axial direction of the stirring drum 14 The mixing operation can be continued by repeating the steps. However, if the powdered material becomes moist, some of the powdered material may form a lump and roll in the stirring drum 14 each time the stirring drum 14 swings, gradually growing into a larger lump. There were times when work could not be carried out smoothly.

However, in the stirring device of the present invention, the stirring drum 14
Since an electrically driven rotating blade 18 is installed at one end in the axial direction of the stirring drum 14, when the rotating blade 18 side of the stirring drum 14 is tilted downward by the crank mechanism 11, the lump of powder material is also rotated in the same direction. move,
Since the powder material is crushed into powder by the rotary blade 18 that rotates at high speed in the opposite direction to the stirring drum 14, the powder material can be reliably stirred and mixed without forming lumps.

After mixing, one cover 17 of the stirring drum 14 is opened to discharge the powder material.

Next, during the mixing of the powder materials, the stirring drum 14
When the bearing member 19 is tilted toward the rotating blade 18 side, the powder material also moves toward the rotating blade 18 side, and a part of the bearing member 19 is filled with the powder material, and a part of the powder material may enter into the bearing member 19. be. However, in the present invention, a small gap S is formed between the end of the closing plate 21 of the bearing member 19 and the rotary plate 23, so that the powder material that tries to enter this small gap S is removed by the rotating plate 23 rotating at high speed. Due to the wind pressure that occurs during this process, there is almost no intrusion. That is, the rotating plate 23 and the closing plate 21
By providing a small gap S between the small gap S, the high speed rotation of the rotating plate 23 tends to generate a large wind pressure near the small gap S, thereby preventing the powder material from entering the small gap S. Furthermore, even if powder material were to enter the small gap S, this powder would not be absorbed by the rotating plate 23.
Since it rotates at high speed, it does not accumulate in the small gap S and is not forcibly removed from the small gap S by the wind pressure generated during the rotation of the rotary plate 23 and remains there. As described above, after the stirrer of the present invention was continuously operated for 100 hours to stir and mix the powder materials with the small gap S formed, when the state of the small gap S was inspected, it was found that the rotary plate 23 and the closing plate were Almost no powder material was attached to the end face of No. 21. In other words, there were hardly any traces of powder material entering the small gap S. On the other hand, with the rotary plate 23 and the closing plate 21 brought into close contact without providing a small gap S, the stirring device is operated for 100 minutes as described above.
After continuous operation for an hour, the rotating plate 23 and the blocking plate 21
When looking at the end surface of the holder, it was found that the powder material had adhered here and there, and there were many scratches that appeared to be caused by the powder material that had entered. This phenomenon is thought to have occurred under the following conditions. That is, when the rotary plate 23 and the closing plate 21 are rotated in close contact with each other, the frictional resistance between the two plates 23 and 21 becomes large, and a portion of the sliding contact portion may be worn out, or the closing plate 21 may become partially damaged due to frictional heat. Therefore, both plates 23,
A gap is created in a part of the close contact portion of 21, and the powder material enters through this gap. However, since the gap is partially formed, the powder that has entered into both plates 23 and 21 remains there without being discharged to the outside. The powder material will be chewed. If the stirring device is used in such a state for a long period of time, it is highly conceivable that the frictional resistance at the sliding contact portion between the rotary plate and the closing plate will increase, which will impede the operation of the electric motor 25. However, the present invention is based on the rotating plate 23.
Since a necessary gap is provided between the block plate 21 and the block plate 21, there is no possibility that the powder material will be trapped and interfere with the operation of the electric motor.

Although the present invention has been described with reference to an example in which the rotary blades 18 are installed only on one side of the stirring drum 14 in the longitudinal direction, the present invention can also be implemented even if the rotary blades 18 are installed on both sides of the stirring drum 14.

[Effect of idea]

Since the present invention is configured as described above, it has the following effects.

(1) This invention has rotating blades installed on one or both sides of the stirring drum, so when the stirring drum is rocking and rotating to mix the powder materials, moisture may cause lumps in some of the powder materials. Even if such lumps are generated, the rotating blades can crush the lumps and make them into fine particles, so that the stirring and mixing operation of the powdered materials can be performed evenly and efficiently.

(2) Also, on the drive shaft to which the rotary vanes are attached, a rotary plate is attached so as to face the end face of the bearing member of the drive shaft, keeping a small gap from the end face of the drive member, so that it is difficult to mix powder materials. Even if the bearing member is embedded in the powder material, the powder material is prevented from entering the small gap between the rotary plate and the bearing member by the wind pressure generated when the rotary plate rotates at high speed. The member will not be deteriorated or damaged due to the intrusion of the powder material, thereby preventing the rotary movement of the rotary blade from being inhibited.

[Brief explanation of the drawing]

Fig. 1 is an enlarged vertical sectional view of the main parts of the stirring device of the present invention, Fig. 2 is a partially cutaway front view of the stirring device of the present invention, Fig. 3 is a partially cutaway side view of the proposed stirring device, and Fig. 4 FIG. 2 is a perspective view showing a state in which the rotating blade is attached. 1... Base plate, 6... Friction wheel, 14... Stirring drum, 18... Rotating blade, 21... Closing plate, 23...
...Rotating plate.

Claims (1)

[Scope of utility model registration request] A rotating blade that rotates at high speed is attached to one or both sides of the longitudinal direction of the stirring drum mounted on an electrically driven friction wheel and driven and rotated by the friction wheel, and the rotating blade is A stirring device characterized in that a rotary plate is fixed to the drive shaft with a small gap maintained between it and an end face of a bearing member that rotatably supports the drive shaft.