KR102106124B1 - Rotary-Disc Type Forming Apparatus - Google Patents

Abstract

The present invention can not only obtain a high-quality molded article for manufacturing artificial lightweight aggregates by expanding the range of motion of the molded body in the rotating disc (potential ratio), but also prevent the deformation or damage of the disc due to the behavior of the molded body during long-term use. In order to provide a rotating disk-shaped molding apparatus capable of, the rotating disk-shaped molding apparatus is formed of a circular side wall and a bottom surface, and a disk for molding a raw material into a molded body by rotation, and rotating the disk in a predetermined direction. It comprises a rotating shaft, characterized in that the bottom portion is formed by applying a powder material and the same material of the same point as the raw material supplied to be molded into the molded body on the bottom surface of the disk.

Description

Rotary-Disc Type Forming Apparatus

The present invention relates to a rotating disk-shaped molding device for forming a molded body for artificial lightweight aggregate by rotation in an inclined state using an inorganic solid waste containing unburned carbon or an organic material.

Lightweight aggregate refers to aggregate that has a smaller specific gravity (less than 2.0) than the aggregate commonly used to reduce the weight of concrete, and the type of lightweight aggregate is artificial that is made by roasting shale, expandable clay, and fly ash as the main raw materials. There are lightweight aggregates and natural lightweight aggregates such as volcanic, tuff and lava.

Recently, artificial lightweight aggregates are mainly manufactured using waste resources, for example, coal ash, paper sludge dewatering cakes, sewage sludge dewatering cakes, sewage sludge dewatering cakes, and decontamination plants generated in thermal power generation processes. Various studies have been actively conducted to manufacture artificial lightweight aggregate by recycling waste resources such as stone washing sludge dewatering cake.

The production of such artificial lightweight aggregate, raw materials for producing the artificial lightweight aggregate, for example, coal ash discharged from a thermal power generation process, paper sludge dewatering cake, sewage sludge dewatering cake, water purification plant sludge dewatering cake, remicon After mixing the powdered sludge dewatering cake, clay, or other additives generated in the facility in an appropriate ratio, and then molding it into a molded body using a finely ground mixed powder, it is made of artificial lightweight aggregate through a calcination process.

In addition, the size or quality of these artificial lightweight aggregates is largely determined by the size or quality of the molded body, and the size determined by the molded body is determined as the size of the artificial lightweight aggregate through the firing process as it is (of course, the water content during the firing process). Evaporation, the size is slightly reduced), the homogeneity of the raw materials constituting the molded body leads to the homogeneity of the artificial lightweight aggregate as it is, and the rigidity of the molded body affects the deformation or damage of the artificial lightweight aggregate in the firing process.

That is, in order to obtain an artificial lightweight aggregate having a good quality at an appropriate size, a molding device having a good quality at an appropriate size must be preceded, and thus, in the manufacture of an artificial lightweight aggregate, a molding device using a mixed powder to form a molded body is important. Will have

First, as an example of a conventional rotating disk-type molding apparatus, Korean Patent Registration No. 10-0711762 (hereinafter referred to as “patent document 1”) discloses “a pelletizer for granulating fine powders”.

In the pelletizer disclosed in Patent Document 1, in assembling the fine iron ore raw material, the pelletizer is used to assemble the raw material to be assembled without changing the inclination, depth, size, and feed rate of the pelletizer pan. In order to provide a pelletizer for assembling the powdered raw material that can stay inside the fan for a long time, the first pelletizer fan and a connection formed in the vertical direction of the first pelletizer fan at the center of the first pelletizer fan It includes a shaft and a second pelletizer fan that is concentric with the first pelletizer fan and is coupled to the first pelletizer fan by a connecting shaft.

That is, Patent Document 1, when the finely mixed powder is supplied to the second pelletizer pan, the powdered raw materials are assembled while flowing inside the second pelletizer pan, and then the first pelletizer pan. By dropping, the first pelletizer fan flows for a certain period of time and discharges it to the outside to increase the residence time of the fine raw material.

However, this patent document 1 is not only complicated in structure, there is a possibility that the assembled fine powder may be deformed or damaged in the process of falling from the second pelletizer fan to the first pelletizer fan, and the first pellet may be used for a long time. There is a risk of deformation or damage to the tire pan and the second pelletizer pan itself.

Patent Document 1: Korean Registered Patent No. 10-0711762

The present invention, as described above, in consideration of the problems of the prior art, as well as to obtain a high-quality artificial lightweight aggregate for producing a molded body by increasing the range of motion (drop ratio) of the molded body in a rotating disk in an inclined state , It is to provide a rotating disk-shaped molding apparatus that can prevent the deformation or damage of the disk due to the behavior of the molded body during long-term use.

The rotating disk-shaped molding apparatus according to the present invention comprises a circular sidewall and a bottom surface, and includes a disk for molding the raw material of the molded body into a molded body by rotation in an inclined state, and a rotating shaft for rotating the disk in a predetermined direction. , On the bottom surface of the disk, characterized in that the bottom portion is formed by applying the powder material and the caking water of the same components as the raw material of the molded body supplied to be molded into the molded body.

In addition, the bottom surface of the disk of the rotating disk-shaped molding apparatus according to the present invention is formed in a concave shape, and the powder material and the point-forming water of the same components as the raw material supplied to be molded into the molded body are applied to the concave portion of the bottom surface. The bottom is formed. The upper surface of the bottom portion is characterized in that it coincides with the lower end of the side wall of the disc.

In addition, a plurality of nail-shaped studs are provided on the bottom surface of the disk of the rotating disk-shaped molding apparatus according to the present invention.

In addition, it characterized in that it comprises at least one rotating knife for maintaining the upper surface of the bottom portion of the rotating disk-shaped molding apparatus according to the present invention in a horizontal plane.

According to the present invention, it is possible to obtain a molded article for manufacturing high-quality artificial lightweight aggregate by expanding the behavior range (spot ratio) of the molded body in a disc rotating in an inclined state, and the disc may be deformed due to the behavior of the molded body during long-term use. Damage can be prevented.

1 is a view showing a rotating disk-shaped molding apparatus of the present invention
2 is a view showing another embodiment of FIG. 1;
Figure 3 is a view showing the configuration of the rotating knife in Figures 1 and 2
Figure 4 is a view showing the behavior of the molded body in Figures 1 and 2

Hereinafter, the rotating disk-shaped molding apparatus of the present invention will be described in detail with reference to FIGS. 1 to 4.

1 is a view showing a rotating disk-shaped molding apparatus of the present invention, Figure 2 is a view showing another embodiment of Figure 1, Figure 3 is a view showing the configuration of the rotating knife in Figures 1 and 2, Figure 4 is 1 and 2 are views showing a range of behavior of the molded body.

In addition, the present invention is a rotating disk-shaped molding apparatus for molding a molded body for artificial lightweight aggregate, as raw material for the molded body for artificial lightweight aggregate, coal ash, paper sludge dewatering cake, sewage sludge discharged from a thermal power generation process Dehydrated Cake, Water Treatment Plant Sludge Dehydrated Cake, Stone Wash from Remicon Facility Sludge Dehydrated Cake, selected as an ingredient suitable for artificial lightweight aggregate production from clay, other additives, etc., weighed at an appropriate ratio, evenly mixed and finely ground mixed powder Etc. can be used.

The rotating disk-shaped molding device (hereinafter referred to as a "forming device"), as shown in Figure 1, a circular sidewall and a disk 210 made of a bottom surface, and the frame 220 for supporting the disk, A rotating shaft 230 for rotating the disk 210 in a predetermined direction, an inclination adjusting unit 240 provided at a lower end of the rotating shaft 230 to adjust the inclination angle of the disk 210, and the frame 220 It includes a cross bar 250 that traverses the upper surface of the disk 210 from the top, and at least one or more rotating knife portions 260 provided on the cross bar 250.

First, the disk 210 is for molding a raw material into a molded body by rotation in an inclined state, and as shown in FIG. 1, it is formed from a circular side wall and a bottom surface extending from the side wall and sealing the bottom surface. In the shape of the opened circular pot, the bottom surface is provided with a bottom portion 211 made of the same components as the raw material of the molded body, wherein the top surface of the bottom portion 311 is rolled in the process of forming the raw material into a molded body. It functions as a floor.

That is, the bottom portion 211 is formed by applying a powder made of the same component as the raw material molded into the molded body by the disk 210 and the point-forming water to the bottom surface of the disk 210.

However, in this case, when the bottom portion 211 is formed by applying only the material of powder having the same components as the raw material of the molded body and the point water, the disk 210 is tilted and rotated to mold the raw material into a molded body. When, when the force applied to the material of the bottom portion 211 by rotation of the disk 210 is greater than the bonding force between the materials of the bottom portion 211, the material forming the bottom portion 211 There is a danger that they will fall out and jump out.

Therefore, in the molding apparatus 200 of the present invention, a plurality of nail-shaped studs 212 having a plate-shaped head on the bottom surface of the disk 210 is relatively densely provided, and the bottom portion 211 has a plurality of It is formed by coating the bottom surface of the disk 210 in which the stud 212 is provided relatively densely, and a material made of powder having the same components as the raw material of the molded body and a water for spot bonding.

That is, in the present invention, since the plurality of the studs 212 are positioned between the materials forming the bottom portion 211, the disk 210 is attached to the materials of the bottom portion 211, thereby holding the disc 210. Even when rotating in an inclined state, the materials of the bottom part 211 are not separated from the disk 210 and can stably maintain the bottom part 211.

In addition, the upper surface of the bottom portion 211, that is, the bottom surface is because the molded body (or raw material) functions as a rolling surface in the process of molding the raw material of the molded body into the molded body, thereby forming the bottom portion 211 It is necessary to apply the material to cover the top of the stud 212, and it is also necessary to maintain the horizontal surface of the top surface of the bottom portion 211, that is, the bottom surface.

In addition, the bottom portion 211 is formed by combining the materials applied to the bottom surface, and the bonding between the materials is made by the moisture contained in the material, the materials constituting the bottom portion 211 are appropriate It is necessary to include a proportion of moisture.

However, in this case, the ratio of the moisture contained in the raw material of the molded body molded into a molded body while rolling the top of the bottom portion 211, and the molded body (or raw material) is the bottom part in the process of forming the molded body raw material into a molded body (311) It should be taken into consideration that water is exchanged between the raw material of the molded body and the material forming the bottom portion 211 while rolling on the top.

Therefore, when the proportion of moisture contained in the raw material of the molded body molded into a molded body is less than the ratio of moisture to maintain an appropriate bonding force, the material forming the bottom portion 211 is It is preferable that the material constituting the bottom portion 211 contains moisture in a ratio higher than the ratio of moisture required to maintain proper bonding force.

In addition, when the proportion of moisture contained in the raw material of the molded body molded into a molded body is equal to or higher than the ratio of moisture for maintaining an appropriate bonding force, the bottom portion 211 is added. The material to be formed preferably contains moisture in a ratio equal to the ratio of moisture contained in the raw material of the molded body to be molded into a molded body.

That is, the material constituting the bottom portion 211 preferably contains moisture at a rate equal to or higher than the ratio of moisture contained in the raw material of the molded body molded into a molded body at the bottom portion 211.

Meanwhile, as shown in FIG. 1, when the bottom surface of the disk 310 forms a flat surface, the entire bottom portion 211 is formed to have the same thickness.

However, in this case, when the disk 210 is rotated in an inclined state in order to mold the raw material of the molded body into a molded body, a centrifugal force is greatly increased at the edge portion of the bottom portion 211 in contact with the side wall of the disc 210. Because it works, it may happen that the material of the edge portion of the bottom portion 211 is dropped.

Of course, dropping of the edge portion of the bottom portion 211 is a problem that occurs at the beginning of rotation of the disk 210 for molding the molded body, and after a certain time has elapsed, rather than the molded body for molding into a molded body. Since the bottom portion 211 is pressed against the raw material, and the flattening operation for removing the raw material of the pressed molded body is repeated, dropping off the edge portion of the bottom portion 211 is not a significant problem.

However, when the raw material of the molded body for molding into a molded body is rotated at the beginning of the rotation of the disk 210 that is not sufficiently supplied, if the materials fall off at the edge of the bottom portion 311, the repair for the dropped part is immediately performed. Since it is difficult, a problem arises in which it is difficult to proceed with subsequent operations.

Accordingly, in another embodiment of the present invention, as shown in FIG. 2, the bottom portion 211 is formed by concavely forming the bottom surface of the disk 210 and filling only the concave portion with a material composed of the same components as the raw material of the molded body. Is forming.

At this time, since the upper surface (bottom surface) of the bottom portion 211 is matched with the lower end of the side wall of the disk 210, in this case, the upper surfaces of the plurality of studs 212 provided on the bottom surface are naturally the disk 210 ) Is located lower than the bottom of the side wall.

As described above, by filling the concave portion of the bottom surface of the disk 210 with the same material as the raw material of the molded body to form the bottom portion 211, the center portion of the bottom portion 211 where the centrifugal force acts small is On the other hand, it is formed thickly, while the thickness of the edge portion where the centrifugal force acts largely is formed thin.

That is, since a small amount of material is applied to the edge portion of the bottom portion 211 greatly affected by the centrifugal force, the centrifugal force actually acting on the edge portion of the bottom portion 211 when the disk 210 is rotated. By reducing the size of, it is possible not only to reduce the probability of material falling off the rim portion, but even if the delamination occurs at the rim portion, the advantage of being able to repair the delaminated portion even with a small amount of molded material. have.

As described above, while the raw material of the molded body rolls on the top surface of the bottom portion 211, that is, on the bottom surface, the raw material of the molded body is molded into the molded body.

Therefore, in order to mold a molded body of uniform size and quality from raw materials of the molded body, it is necessary to maintain the top surface (bottom surface) of the bottom portion 211 in a horizontal plane.

That is, while the raw material of the molded body rolls on the bottom surface while the raw material is molded into the molded body, the raw material of the injected molded body is pressed against the bottom portion 211 or the molded body seed pressed against the bottom portion 311. In the process of falling off, a part of the material constituting the bottom portion 211 may fall out. At this time, in order to maintain the bottom surface in a horizontal plane, the raw material of the molded body pressed against the bottom surface is removed. , Flattening work is needed to fill the missing parts.

Therefore, in the present invention, in order to maintain the horizontal surface of the top of the bottom portion 211, the two rotating knife portions provided on the rail 250 crossing the top surface of the disk 210 at the top of the frame 220 ( 260).

The rotating knife portion 260 is provided on the lower end of the motor 263, the shaft 262 rotated by the motor 263, and the shaft 262, as shown in Fig. 3 (a). It includes a rotating blade 261.

In addition, as shown in Figure 3 (b), when the disk 210 is rotated in the clockwise direction, since the raw material of the molded body is put in the upper left of the disk 210, the rotating knife portion 260 The rotating blade 261 is preferably provided to be located on the upper right side of the disk 210.

The rotating blade 261 of the rotary knife part 260 rotates while its lower surface is in close contact with the upper surface (bottom surface) of the bottom part 211, while the raw material of the molded body is attached and protrudes, Since the part from which the material forming the bottom part 311 is dropped is filled, it is possible to maintain the top surface (bottom surface) of the bottom part 211 horizontally.

In addition, the length of the rotary blade 261 of the rotary knife portion 260 is preferably provided to cover the rim of the bottom portion 211 to the center (radius).

That is, as in the present invention, when using the two rotary knife portion 260, the length of the rotary blade 261 of the rotary knife portion 260 is about half the length of the radius of the bottom portion 211 Can be done with However, in this case, the rotary blade 261 of the rotary knife portion 260 needs some clearance from the side wall of the disk 210, and the rotary blade 261 and rotary blade 261 of the neighboring rotary knife portion 260 It is preferable to make the length of the rotating blade 261 smaller than 1/2 of the radius of the bottom portion 211 in that a slight gap is required between).

In addition, in the present invention, it is shown that the two rotating knife parts 260 are fixed to the crossbar 250, but one or two rotating knife parts 260 are provided by providing a moving rail (not shown) on the crossbar 250. ) May move along the moving rail and planarize the bottom portion 211.

With this configuration, the bottom portion 211 is flattened by the rotating blade portion 260 whenever the bottom portion 211 passes the position where the rotating blade portion 260 is provided while the disk 210 rotates. The work is done so that the horizontal plane can be maintained.

Next, a description will be given of a process of molding the raw material of the molded body into a molded body by the molding apparatus 200 of the present invention.

First, as shown in (b) of FIG. 3, when the disk 210 rotates in the clockwise direction, the raw material of the molded body is introduced to the upper left of the disk 210.

The raw material of the molded body input to the disk 210 is rolled on the bottom surface of the bottom part 211 of the rotating disk 210. Through this rolling process, the raw material of the other molded materials in contact with each other As it bumps into, it grows to a certain size and becomes harder, so it is molded into a molded body.

In this case, when the moisture ratio of the raw material of the molded body is high, the size of the molded body is combined with the raw material of the other molded body by the moisture contained in the molded body raw material in the process of bumping or contacting while rolling on the bottom surface of the bottom part 211. As the strength increases, the strength of the molded body is low, but when the moisture ratio of the raw material of the molded body is low, the size of the molded body is not increased due to low bonding strength, but the strength is improved while rolling over the bottom surface of the bottom portion 211.

In addition, as in the present invention, the quality of the molded body by the disk 210 that rotates in an inclined state is the ratio of the area of the disk 210 due to the behavior of the molded body (or raw material) at the bottom 211 of the disk 210 (占 積 率, the ratio of the part that is actually used to the space available).

That is, in order to mold the raw material of the injected molded body into a good quality of a size and strength desired by the user, the wider the range of the raw material of the molded body in the bottom portion 211 of the disk 210 rotating in an inclined state is, the wider the range. desirable.

 At this time, in the behavior of the raw material of the molded body in the bottom portion 211, as shown in FIG. 4, the finishing force between the raw material of the molded body and the bottom portion 211 acts as an important element.

In Fig. 4, "A" shows the behavior of the raw material of the molded body on a disk made of a metal plate with a conventional bottom portion, and "B" is the raw material of the molded body on a disc formed with the same material as the molded seeds as in the present invention. It shows the behavior.

That is, as shown in "A" above, in the case of a disc whose bottom portion is made of a metal plate, the raw material of the molded body located at the lower edge of the inclined disc is attached to the edge of the disc by centrifugal force when the disc rotates. It moves upward along the rotation.

At this time, since the frictional force (maximum static frictional force) between the raw material of the molded body moved upward along the disk and the bottom of the metal plate is small, the raw material of the molded body is not only quickly separated from the edge of the disk, but also the disk. Even when falling on the bottom of the mold, the friction force (motion friction force) between the raw material of the molded body and the bottom portion made of a metal plate is small, so that it falls at a high speed, so the range of movement of the raw material of the molded body at the bottom of the disk is narrow and less It becomes rolled, and it becomes difficult to mold the raw material of the molded body into a rigid molded body.

Furthermore, in the case of a disk made of a conventional bottom portion of a metal plate, since the molded body must be molded within a narrow range of motion, the number of behaviors of the raw material of the molded body must be increased, and the bottom is caused by the behavior of the raw material of the molded body repeated in such a narrow space. The metal plate to be called is distorted or cracked, which acts as a cause of the defect in the molded body, and furthermore, the durability of the disk.

On the other hand, as in the present invention, in the case of "B" in which the bottom portion 211 is formed of the same material as the raw material of the molded body, as in "A", the raw material of the molded body located at the lower edge of the inclined disc is When rotating, the disk moves upward along the rotation while being attached to the edge of the disk by centrifugal force. At this time, the friction force (maximum static friction force) between the raw material of the molded body and the bottom portion 211 is greater than that of "A". , The raw material of the molded body is pulled up to a higher position.

In addition, the frictional force (motion between the raw material of the molded body and the bottom part 211) even when the raw material of the molded body is separated from the edge of the disk 210 and falls on the bottom part 211 of the disk 210 at a certain height. Due to its large frictional force), it falls at a slower rate than in the case of "A" above, and it also acts in a wider range than in the case of "A" by the centrifugal force acting while the raw material of the molded body falls at a slower rate. It is molded into a hard molded body while rolling a lot.

As described above, in the present invention, since the bottom portion 211 of the disk 210 is made of the same material as the raw material of the molded body, the frictional force between the raw material of the molded body and the bottom portion is larger than that of the conventional bottom portion of the disc made of a metal plate. Therefore, the occupancy rate in the bottom portion becomes large.

In addition, since the bottom portion 211 of the present invention is formed by coating powder and point water of the same components as the raw material of the molded body on the bottom surface of the disk 210, the raw material of the molded body is formed into the molded body in the bottom portion 211. During the molding process, there is no change in the components of the molded body. Therefore, not only the production of a molded article of uniform quality is possible, but also the bottom surface of the disk 210 can be protected by the bottom portion 211.

200 rotating disc type molding machine (forming machine) 210 disc
220 frame 230 rotating shaft
240 Inclination part 250 Crossbar
260 rotary knife

Claims (4)

A disk formed of a circular side wall and a bottom surface, and the raw material of the molded body is molded into a molded body by rotation in an inclined state.
It includes a rotating shaft for rotating the disk in a constant direction,
A plurality of nail-shaped studs are provided on the bottom surface of the disk, and a bottom portion is formed by applying powder material and coking water of the same components as the raw material of the molded body supplied for molding into the molded body to the bottom surface of the disk Rotating disk type forming device.
According to claim 1,
The bottom surface of the disk is formed in a concave shape, and a bottom portion is formed by applying powder material and the same amount of point water as the raw material supplied to be formed into the molded body to the concave portion of the bottom surface,
The upper surface of the bottom portion, the rotating disk-shaped molding apparatus, characterized in that coincides with the lower end of the side wall of the disk.
delete The method according to claim 1 or 2,
A rotating disk-shaped molding apparatus comprising at least one rotating knife for maintaining the upper surface of the bottom portion in a horizontal plane.

Images