JP2018135210A - Powder supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powder supply device which can adjust a flow state of powder and control a state of the powder discharged from an opening.SOLUTION: A powder supply device includes a body part 2 which has a storage space 2h for storing powder and in which an opening 2a for discharging the powder in the storage space 2h is formed at a lower end. The body part 2 includes an inclined wall 2f which inclines toward the opening 2a. A partition part 10 having a vertical partition plate 13 is provided in the storage space 2h. A flow state of the powder in the storage space 2h of the body part 2 can be adjusted and thus a state of the powder discharged from the opening 2a can be controlled.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a powder supply apparatus. More specifically, it adjusts the supply state of various dry powders such as functional powders such as gas adsorbents, catalysts and battery cathode materials, ores such as copper ore and nickel ore, fluorite powder and wheat flour. The present invention relates to a powder supply apparatus.

  A hopper or the like is used as a device for storing dry powder and supplying the stored powder to the outside. In general hoppers and the like, an opening is provided at a lower end of a main body portion for storing powder, and an inner surface of the lower end portion is an inclined surface inclined toward the opening. Therefore, if the opening is closed, the powder can be stored in the main body, and if the opening is opened, the powder can be supplied to the outside through the opening.

  Some hoppers as described above discharge powder to the outside only by gravity, and others have a conveying device provided at the position of the opening so that a certain amount of powder can be supplied to the outside. In the case of the latter hopper, a conveyor provided with a conveyor such as a screw conveyor is used.

  In a hopper that supplies a fixed amount of powder to the outside by a transfer device, a fixed amount of powder can be continuously transferred by the transfer device as long as the flow state of the powder inside the hopper is constant. However, when the flow state of the powder in the hopper is not constant, there is a possibility that the powder is bonded to form a bridge. In such a case, the flow state changes and the powder cannot be properly discharged from the opening. Therefore, techniques for preventing the formation of a powder bridge in the hopper have been developed (Patent Documents 1 and 2).

In Patent Document 1, a pipe having a funnel-like lower end is provided in the hopper, and the lower end of the pipe is arranged directly above the opening of the hopper with the upper end of the pipe suspended by a coil spring. Are disclosed.
Patent Document 2 discloses a configuration in which a cone-shaped part is disposed in the vicinity of an opening of a hopper.

  If a pipe or cone-shaped part with a lower end opened like a funnel is placed near the opening of the hopper as in the techniques of Patent Documents 1 and 2, these members become obstacles and a powder bridge is formed in the hopper. It becomes difficult to be done. Moreover, if a pipe or cone-shaped part is moved up and down or vibrated, it can be immediately destroyed even if a powder bridge is formed. Therefore, if the techniques of Patent Documents 1 and 2 are employed, it is possible to prevent the occurrence of defective powder discharge resulting from the formation of a powder bridge in the hopper.

Japanese Patent No. 3352590 JP-A-8-301387

  However, the techniques of Patent Documents 1 and 2 prevent the formation of a powder bridge, and do not assume until the flow state of the powder in the hopper or in the vicinity of the opening is adjusted. A method for adjusting the state of the powder discharged from the opening by adjusting the flow state of the powder is not disclosed.

  In view of the above circumstances, an object of the present invention is to provide a powder supply apparatus that can control the state of powder discharged from an opening by adjusting the flow state of the powder.

The powder supply apparatus according to the first aspect of the present invention has a storage space for storing powder, and includes a main body portion formed with an opening for discharging powder in the storage space at the lower end. An inclined wall inclined toward the opening is provided, and a partition portion having a vertical partition plate is provided in the accommodation space.
The powder supply apparatus according to a second aspect of the present invention is the powder supply apparatus according to the first aspect, wherein the main body portion is inclined so as to approach each other toward the lower end, and includes two opposing inclined walls in which the opening is formed between the lower ends. The vertical partition plate of the partition part is a plate-like member provided between the opposing inclined walls and extending in the vertical direction and the direction along the lower end edge of the inclined wall.
The powder supply apparatus according to a third aspect of the present invention is characterized in that, in the first or second aspect, the partition portion includes a cross partition plate that intersects the vertical partition plate.
According to a fourth aspect of the present invention, there is provided a powder supply apparatus according to the third aspect, comprising a plurality of the intersecting partition plates, the plurality of intersecting partition plates being spaced apart so as to be aligned in a direction along a lower end edge of the inclined wall. It is characterized by being provided.
According to a fifth aspect of the present invention, in the first, second, third or fourth invention, the partition portion is provided such that the lower end thereof is positioned at the same height as the lower end edge of the opposing inclined wall. It is characterized by being.
According to a sixth aspect of the present invention, in the first, second, third, fourth, or fifth invention, the partition section includes a plurality of the vertical partition plates.
According to a seventh aspect of the present invention, there is provided a powder supply apparatus according to the first, second, third, fourth, fifth or sixth aspect, wherein the powder is disposed below the opening in the main body and discharged from the opening. It has the conveyance part which conveys.

According to the first and second inventions, since the flow state of the powder in the housing space of the main body can be adjusted, the state of the powder discharged from the opening can be controlled.
According to the third and fourth inventions, the interior space of the main body can be divided into a plurality of spaces, so that the movement of the powder in each of the divided spaces can be easily approximated. Therefore, it becomes easier to control the state of the powder discharged from the opening.
According to the fifth aspect, since the movement of the powder in the housing space of the main body portion can be easily made uniform, the state of the powder discharged from the opening can be controlled more easily.
According to the sixth aspect of the present invention, the flow resistance against the flow of the powder toward the opening can be further increased, so that the state of movement of the powder in the housing space of the main body can be easily approximated.
According to the seventh aspect, it becomes easy to adjust the amount of powder supplied to the outside by the transport unit.

It is a schematic explanatory drawing of the powder supply apparatus 1 of this embodiment, Comprising: (A) is a schematic longitudinal cross-sectional view, (B) is a BB sectional view taken on the line of (A). (A) is explanatory drawing of the state which has arrange | positioned the lower end position of the vertical partition plate 13 below the opening 2a, (B) is the state which has arrange | positioned the lower end position of the vertical partition plate 13 above the opening 2a It is explanatory drawing of. It is explanatory drawing in case the partition part 10 has multiple vertical partition plates 13. FIG. It is a schematic explanatory drawing of the powder supply apparatus 1 of this embodiment. It is a schematic explanatory drawing of the powder supply apparatus 1 of this embodiment provided with the partition part 10 which has the cross partition board 15, Comprising: (A) is a schematic longitudinal cross-sectional view, (B) is B- of (A). FIG. It is a schematic explanatory drawing of the powder supply apparatus 1 of this embodiment in case the partition part 10 has the cross partition board 15. FIG.

  The powder supply apparatus according to the present embodiment is an apparatus that temporarily stores powder and supplies the powder to the outside, and is characterized in that the powder can be stably supplied to the outside.

  The powder supply apparatus of this embodiment can be applied to any equipment. For example, it can be used as an apparatus for storing and supplying powder in facilities that require stable supply of powder to the next process. For example, when supplying a functional powder raw material to a reactor or the next process at a functional material manufacturing factory, when supplying ore to a smelting furnace at a smelting factory, powder such as flour is used at various product manufacturing facilities. It can also be applied to the case of supplying to the next process.

The powder stored and supplied by the powder supply apparatus of the present embodiment is not particularly limited. For example, an average particle diameter of those having μm~ several hundred μm and, like also the average particle diameter of several μm~ several tens μm of, be mentioned as a powder to be stored supplied to the powder supplying device of this embodiment the Can do. Also, the type of powder is not particularly limited, and examples thereof include functional particles, ore, fluorite, and wheat flour as powders stored and supplied to the powder supply device of this embodiment. In particular, the powder supply apparatus of the present invention is suitable as an apparatus for storing and supplying powder supplied in the presence of a gas such as air between the powders.

(Powder supply device 1)
As shown in FIGS. 1 and 4, the powder supply apparatus 1 of the present embodiment includes a main body 2 that stores powder, a partition 10 provided in the main body 2, and a lower portion of the main body 2. And a conveying unit 20 disposed in the.

(Main part 2)
As shown in FIGS. 1 and 4, the main body 2 is a hollow member having an accommodation space 2 h inside. The main body 2 is provided with an opening 2a at the lower end thereof for discharging the powder in the accommodation space 2h to the outside. In addition, although not shown in figure, the main-body part 2 supplies powder in the storage space 2h from the supply part provided in the upper part.

  The main body 2 has two opposing inclined walls 2f and 2f that are inclined so as to approach each other toward the lower end thereof. An opening 2a is formed between the lower end edges 2s of the two opposing inclined walls 2f, 2f. For this reason, the opening 2a has a substantially rectangular shape that is long along the lower end edge 2s of the inclined walls 2f and 2f (FIG. 1B).

  The opposing inclined walls 2f, 2f are formed so as to be symmetric with respect to the intermediate line CL in the width direction of the main body 2 (see FIG. 1A). That is, the inclined angles θ2 and θ3 with respect to the horizontal direction of the inclined walls 2f and 2f facing each other are provided to have the same angle. The inclination angles θ2 and θ3 are appropriately set according to the type of powder accommodated in the accommodation space 2h, powder characteristics (powder characteristics and fluidity) determined by the density, particle size, moisture content, and surface state. However, it is generally 50 to 90 degrees, preferably about 50 to 80 degrees.

(Partition 10)
As shown in FIGS. 1 and 4, a partition 10 is provided in the housing space 2 h of the main body 2. The partition unit 10 includes a vertical partition plate 13 disposed on the intermediate line CL in the width direction of the main body unit 2. The vertical partition plate 13 is a plate-like member extending in the vertical direction and in the direction along the lower end edge 2s of the inclined wall 2f.

  The vertical partition plate 13 is not limited to a plate-shaped member as long as it has a smaller thickness than the length in the vertical direction or the horizontal direction (the left-right direction in FIG. 1B). If a plate-like member is employed as the vertical partition plate 13, it is possible to prevent a decrease in the volume of the housing space 2h of the main body 2, and problems such as increasing the flow resistance of the powder more than necessary are less likely to occur. . The vertical partition plate 13 can be formed by a flat plate having a flat surface, for example. In this case, it is desirable to provide the surface so as to be parallel to the vertical direction and parallel to the lower end edge 2s of the inclined wall 2f. In addition to the flat plate as described above, a corrugated plate or a plate-like member having protrusions on the surface can be used as the vertical partition plate 13.

(Conveyor 20)
As shown in FIGS. 1 and 4, a transport unit 20 is disposed below the opening 2 a of the main body 2 (note that the detailed structure of the transport unit 20 is not shown in the figure). The transport unit 20 is a device for transporting the powder in the main body unit 2 to the next process or the like. The conveyance part 20 should just have a function which can convey the powder in the main-body part 2 continuously by a fixed amount, and is not specifically limited. For example, a known powder conveyance device such as a screw conveyor, a belt conveyor, or a chain conveyor can be used as the conveyance unit 20.

  Since it is the above structure, if the conveyance part 20 is operated, the powder in the accommodation space 2h of the main-body part 2 can be discharged | emitted from the opening 2a, and powder can be conveyed outside by the conveyance part 20. .

  As the powder is discharged from the opening 2a, the powder flows toward the opening 2a in the accommodation space 2h. At this time, since the vertical partition plate 13 of the partition portion 10 as described above is provided in the accommodation space 2h, it is possible to increase resistance to powder flow. That is, since the vertical partition plate 13 provides resistance to powder flow by disposing the vertical partition plate 13 in the accommodation space 2h, it is easy to adjust the flow state of the powder.

(Vertical arrangement of the vertical partition plate 13 of the partition unit 10)
The vertical partition plate 13 of the partition unit 10 is not particularly limited in its vertical position. However, as shown in FIG. 1 (A), it is desirable that the lower end of the vertical partition plate 13 is disposed at substantially the same height as the lower end 2 of the inclined walls 2f, 2f facing each other. In this case, since the flow state of the powder in the vicinity of the opening 2a can be easily adjusted, the state of the powder discharged from the opening 2a can be easily controlled.

  Further, as shown in FIG. 2B, the lower end of the vertical partition plate 13 of the partition portion 10 may be disposed above the lower end 2 of the opposing inclined walls 2f, 2f. In this case, the distance L1 from the lower end of the vertical partition plate 13 to the lower end 2 of the opposing inclined walls 2f, 2f is not particularly limited. What is necessary is just to adjust appropriately so that the movement state of a powder may approach uniformly according to the kind of powder supplied to the main-body part 2, the state of a powder, the quantity which discharges | emits powder from the opening 2a, etc.

  Further, as shown in FIG. 2A, when the connection space 4 is provided between the opening 2a of the main body 2 and the transport unit 2, the lower end of the vertical partition 13 is opposed to the lower end. You may arrange | position so that it may be located below the lower end 2 of the walls 2f and 2f. In this case, the distance L2 from the lower end of the vertical partition plate 13 to the lower end 2 of the opposing inclined walls 2f, 2f is not particularly limited. Depending on the type of powder supplied to the main body 2 and the state of the powder, the amount of powder discharged from the opening 2a, the distance from the opening 2a to the transport unit 20, etc., the moving state of the powder approaches uniformly. It is sufficient to adjust appropriately.

(Arrangement in the width direction of the vertical partition plate 13 of the partition unit 10)
In the above example, the case where the vertical partition plate 13 of the partition unit 10 is disposed on the intermediate line CL in the width direction of the main body unit 2 has been described, but the position where the vertical partition plate 13 is disposed in the width direction of the main body unit 2. Is not particularly limited. If the powder movement state is appropriately adjusted according to the type of powder supplied to the main body 2, the state of the powder, the inclination angle of the opposing inclined walls 2f, 2f, etc. Good.

(Multiple vertical partition plates 13)
In the above example, the case where the partition unit 10 includes one vertical partition plate 13 has been described, but the partition unit 10 may include a plurality of vertical partition plates 13. For example, the plurality of vertical partition plates 13 are arranged so as to be aligned in the width direction of the main body 2. That is, the plurality of vertical partition plates 13 are arranged so as to line up from one inclined wall 2f toward the other inclined wall 2f in the opposing inclined walls 2f and 2f (see FIG. 3). Then, since the flow resistance with respect to the flow of the powder toward the opening 2a can be increased, the moving state of the powder in the housing space 2h of the main body 2 can be easily approximated. Further, if the distance between the adjacent vertical partition plates 13 or the distance between the adjacent vertical partition plates 13 and the inclined wall 2f is adjusted, the flow resistance can be changed depending on the position in the storage space 2h. It becomes easy to adjust the flow state of the powder.

  When a plurality of vertical partition plates 13 are provided, the distance between the adjacent vertical partition plates 13 and the distance between the adjacent vertical partition plates 13 and the inclined wall 2f may be arranged at equal distances, or the distance may be varied depending on the position. You may change it. What is necessary is just to adjust appropriately so that the movement state of a powder may approach uniformly according to the kind of powder supplied to the main-body part 2, the state of a powder, the quantity which discharges | emits powder from the opening 2a, etc.

  Further, the plurality of vertical partition plates 13 may all be the same vertical partition plate 13, or different vertical partition plates 13 (for example, a flat plate and a corrugated plate) may be arranged depending on the position. Depending on the type of powder supplied to the main body 2, the state of the powder, the amount of powder discharged from the opening 2a, etc. do it.

(Cross partition plate 15 provided in the partition 10)
As shown in FIGS. 5 and 6, the partition unit 10 may include a cross partition plate 15 in addition to the vertical partition plate 13. The cross partition plate 15 is a plate-like member provided so as to cross the vertical partition plate 13. Specifically, the cross partition plate 15 is provided so that the surface thereof is parallel to the vertical direction and crosses the direction along the lower end edge 2s of the inclined wall 2f. Moreover, the cross partition plate 15 is provided such that its inner end is connected to the vertical partition plate 13 and its outer end is connected to the inclined wall 2f. That is, the cross partition plate 15 is provided such that there is no gap between the inner end and the vertical partition plate 13 and between the outer end and the inclined wall 2f.

  If such a cross partition plate 15 is provided, the accommodation space 2h of the main body 2 can be divided into smaller spaces, so that the movement of powder in each divided space can be easily controlled. That is, the movement state of the powder in each divided space can be easily approximated. Then, since the movement state of the powder in each space can be easily approached uniformly, the state of the powder in the entire opening 2a can be easily approached uniformly.

  In addition, the cross partition plate 15 should just be a member with thickness thin compared with the length of the vertical direction or a horizontal direction (up-down direction of FIG. 5 (B)), and is not restricted to a plate-shaped member. If a plate-like member is employed as the cross partition plate 15, it is possible to prevent a decrease in the volume of the housing space 2h of the main body 2, and problems such as increasing the flow resistance of the powder more than necessary are less likely to occur. . Such a cross partition plate 15 can be formed by, for example, a flat plate having a flat surface. In this case, it is desirable to provide the surface so that the surface is parallel to the vertical direction and intersects the direction along the lower edge 2s of the inclined wall 2f. In addition to the flat plate as described above, a corrugated plate or a plate-like member having protrusions on the surface can be used as the cross partition plate 15.

  The number of the cross partition plates 15 provided is not particularly limited. Although FIG. 5 and FIG. 6 demonstrated the case where the four cross partition plates 15 were provided, the number of the cross partition plates 15 may be three or less, and may be provided five or more. The divided space is appropriately sized according to the size of the accommodation space 2h of the main body 2 where the partition 10 is installed, the type of powder to be accommodated, the state of the powder, the amount of powder discharged from the opening 2a, and the like. What is necessary is just to make it the number of sheets. In other words, it is easy to control the movement of the powder in each divided space in accordance with the size of the accommodation space 2h of the main body 2 where the partition 10 is installed and the powder to be accommodated (for example, the movement state of the powder). (Easy to make uniform).

  Moreover, when providing the some cross partition board 15, the space | interval in the direction along the lower end edge 2s of the inclined wall 2f is not specifically limited. For example, in FIG. 5B, the interval between the adjacent cross partition plates 15 and the interval between the wall surfaces 2d and 2d sandwiching the inclined wall 2f in the main body 2 and the cross partition plate 15 may all be the same interval. Moreover, these intervals may be different. The distances D1 to D5 are appropriately adjusted so that the moving state of the powder approaches uniformly according to the type and state of the powder supplied to the main body 2 and the amount of powder discharged from the opening 2a. do it.

  If the plurality of cross partition plates 15 are provided so that the surfaces thereof are parallel to the vertical direction and perpendicular to the direction along the lower end edge 2s of the inclined wall 2f, the movement of the powder in the space partitioned by the cross partition plates 15 is performed. There is an advantage that the state can be easily adjusted.

  Further, the plurality of cross partition plates 15 may all have the same shape and size, or may have different shapes and sizes depending on positions. Moreover, you may arrange | position the cross partition board 15 (for example, a flat plate, a corrugated board, etc.) which changes with positions. An appropriate cross partition plate 15 is used so that the moving state of the powder approaches uniformly according to the type and state of the powder supplied to the main body 2 and the amount of powder discharged from the opening 2a. do it.

  5A and 6, the lower end of the cross partition plate 15 may be arranged at the same height as the lower end of the vertical partition plate 13, and the lower end of the cross partition plate 13 may be the same as that of the vertical partition plate 13. You may arrange | position so that it may be located above or below an upper end. However, if the cross partition plate 15 is arranged so that the lower end thereof is at the same height as the lower end of the vertical partition plate 13, the powder in the space surrounded by the vertical partition plate 13, the cross partition plate 15, and the inclined wall 2f. It becomes easy to adjust the flow state of the body.

  Further, as shown in FIGS. 5A and 6, the cross partition plate 15 may have its upper end disposed at the same height as the upper end of the vertical partition plate 13, and its upper end may be the vertical partition plate 13. You may arrange | position so that it may be located above or below an upper end. However, it is preferable to dispose the cross partition plate 15 so that the upper end of the cross partition plate 15 is at the same height as the upper end of the vertical partition plate 13 in order to make the movement state of the powder uniform.

(About main unit 2)
As described above, the main body 2 has two opposing inclined walls 2f and 2f that are inclined toward each other toward the lower end thereof, and an opening 2a is formed by the lower ends of the two inclined walls 2f and 2f. Any other shape may be used as long as it is designed, and other shapes are not particularly limited. For example, the main body 2 may be a substantially rectangular shape in plan view, and its upper part may be a rectangular parallelepiped or a cube (see FIGS. 1 and 4), or may have a cylindrical upper part. it can. Moreover, if the lower part also has two opposing inclined walls 2f and 2f, the shape of the wall other than the two inclined walls 2f and 2f is not particularly limited. For example, the other wall may be a vertical wall (see FIG. 1B) or a wall inclined toward the opening 2a.

  Further, the main body 2 does not necessarily have two inclined walls 2f, and the shape of the opening 2a is not necessarily substantially rectangular. Even in that case, if the vertical partition plate 13 and the cross partition plate 15 of the partition portion 10 are provided at the position of the opening 2a, it is possible to adjust the flow state of the powder in the housing space 2h of the main body portion 2. Yes, it is possible to control the state of the powder discharged from the opening 2a to some extent.

(About the transport unit 20)
The conveyance part 20 should just have a function which can convey the powder in the main-body part 2 continuously by a fixed amount, and is not specifically limited. For example, a known powder conveyance device such as a screw conveyor, a belt conveyor, or a chain conveyor can be used as the conveyance unit 20. In particular, if powder is conveyed along the direction in which the opening 2a of the main body 2 extends using a screw conveyor, it is easy to suppress variations in the amount of powder discharged from the opening 2a of the main body 2. For example, if a screw conveyor with an equal ratio pitch is used, the difference in the amount of powder discharged from the opening 2a of the main body 2 due to the position of the opening 2a (the vertical position in FIG. 2B) is calculated. Can be small. Then, it is possible to stabilize and adjust the amount of powder supplied from the opening 2a of the main body 2 to the conveying unit 20, in other words, the amount of powder discharged from the opening 2a of the main body 2.

  Moreover, although the powder supply apparatus 1 of this embodiment demonstrated the case where the conveyance part 20 was provided in the said example, the powder supply apparatus 1 of this embodiment does not necessarily need to be equipped with the conveyance part 20. . For example, when the powder is discharged from the opening 2a by gravity, the powder supply apparatus 1 of the present embodiment can be configured by only the main body 2 without providing the above-described transport unit 20.

  The powder supply apparatus of the present invention is suitable as an apparatus for storing and supplying powder in facilities that require stable supply of powder to the next process.

DESCRIPTION OF SYMBOLS 1 Powder supply apparatus 2 Main-body part 2a Opening 2h Storage space 2f Inclined wall 2s Lower end edge of inclined wall 2f 10 Partition part 13 Vertical partition plate 15 Cross partition plate 20 Conveyance part

Claims (7)

It has a storage space for storing powder, and has a main body portion formed with an opening for discharging powder in the storage space at the lower end,
The main body is
It has an inclined wall that is inclined toward its opening,
In the accommodation space,
A powder supply apparatus comprising a partition having a vertical partition plate. The main body is
Inclined so as to approach each other toward its lower end, and includes two opposing inclined walls in which the opening is formed between the lower ends,
The vertical partition plate of the partition part is
The powder supply apparatus according to claim 1, wherein the powder supply device is a plate-like member provided between the opposing inclined walls and extending in a vertical direction and a direction along a lower end edge of the inclined wall. The partition is
The powder supply apparatus according to claim 1, further comprising an intersecting partition plate that intersects with the vertical partition plate. A plurality of the cross partition plates,
The plurality of cross partition plates are:
The powder supply apparatus according to claim 3, wherein the powder supply apparatus is provided at intervals so as to be aligned in a direction along a lower end edge of the inclined wall. The partition is
The powder supply apparatus according to claim 1, 2, 3, or 4, wherein the lower end thereof is provided so as to be positioned at the same height as the lower end edge of the opposing inclined wall. The partition is
6. The powder supply apparatus according to claim 1, wherein a plurality of the vertical partition plates are provided. The powder according to claim 1, further comprising a conveying unit arranged below the opening in the main body for conveying the powder discharged from the opening. Body supply device.

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