JP2019119449A - Powder feeding device - Google Patents

Abstract

To provide a powder feeding device capable of controlling the state of powder discharged from an opening by adjusting the flow state of powder.SOLUTION: A body part 2 has a storage space 2h for storing powder, and is provided with an opening 2a at the lower end for discharging the powder in the storage space 2h. The body part 2 has a pair of inclined walls 2f and 2f inclined so as to approach each other toward the lower end 2s thereof, and a pair of opposing walls 2g and 2g arranged to sandwich the pair of inclined walls 2f and 2f. A partition part 10 has a vertical partition plate 13 which provided between the facing inclined walls 2f and 2f in the storage space 2h, the vertical partition plate 13 of the partition part 10 is a plate-like member extending in the vertical direction and in the direction along the lower edge 2s of the inclined wall 2f, and has an inclined edge that inclines toward the other edge from top to bottom. Since the flow state of the powder in the storage space 2h of the body part 2 can be adjusted, the 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 device. More specifically, the supply state of powder in various dry states such as functional powder such as gas adsorbent, catalyst, battery positive electrode material, ore such as copper ore, nickel ore, fluorite powder, flour, etc. is adjusted. The present invention relates to a powder feeder.

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

  Among the hoppers as described above, there are ones that discharge the powder to the outside by gravity alone, and ones that are provided with a transport device at the position of the opening so that a fixed amount of powder can be supplied to the outside. In the case of the latter hopper, what provided conveyors, such as a screw conveyor, as a conveying apparatus is used.

  In the hopper which supplies a fixed amount of powder to the outside by the transfer device, the fixed amount of powder can be transferred continuously by the transfer device if the flow state of the powder inside the hopper is constant. However, if the flow condition of the powder in the hopper is not constant, the powder may combine to form a bridge. In this case, the flow condition changes and the powder can not be properly discharged from the opening. Therefore, techniques have been developed to prevent the formation of a bridge of powder in the hopper (Patent Documents 1 and 2).

In Patent Document 1, a pipe whose lower end is opened like a funnel is provided in the hopper, and the lower end of the pipe is disposed right above the opening of the hopper in a state where the upper end of the pipe is vertically suspended by a coil spring. Things are disclosed.
In addition, Patent Document 2 discloses that a cone-shaped component is disposed in the vicinity of the opening of the hopper.

As in the techniques of Patent Documents 1 and 2, when a pipe or a cone-like part whose lower end is opened like a funnel is disposed near the opening of the hopper, these members become obstacles and a bridge of powder is formed in the hopper. It becomes difficult to be done.
In addition, if a pipe or a cone-like part is moved up and down or vibrated, even if a bridge of powder is formed, it can be destroyed immediately.
Therefore, if the techniques of Patent Literatures 1 and 2 are adopted, it is possible to prevent the occurrence of the discharge failure of the powder due to the formation of the bridge of the powder in the hopper.

Patent No. 3352590 Japanese Patent Application Laid-Open No. 8-301387

  However, the techniques of Patent Documents 1 and 2 prevent the formation of a bridge of powder, and do not assume adjusting the flow state of the powder inside the hopper or in the vicinity of the opening. And the method of adjusting the flow state of powder and adjusting the state of the powder discharged | emitted from an opening is not disclosed by patent document 1, 2.

  An object of the present invention is to provide a powder feeding apparatus capable of preventing the formation of a bridge and controlling the flow state of the powder to control the state of the powder discharged from the opening.

The powder supply device according to the first aspect of the present invention includes a main body portion having a storage space for storing powder and having an opening formed at the lower end to discharge the powder in the storage space. A pair of sloped walls which are inclined toward each other toward the lower end and in which the opening is formed between the lower ends and a pair of sloped walls which are inclined so as to approach each other toward the opening And a pair of opposed walls disposed, and a partition having a vertical partition plate provided between the opposed inclined walls is provided in the storage space, and the vertical partition of the partition is provided. The plate is a plate-like member extending in the vertical direction and in the direction along the lower edge of the inclined wall, and the vertical partition plate is such that an edge opposite to the opposite wall is the other edge from the top toward the lower side It is important to note that it has a sloping To.
In the powder supply device according to a second aspect of the present invention, in the first aspect, the vertical partition plate makes an angle formed by an inclined edge of the vertical partition plate facing the opposing wall of the main body portion with respect to the vertical direction. A value obtained by dividing an intersection line between a plane including the surface of the plate and the opposing wall of the main body portion by the angle with the vertical direction is 1/4 to 1.
The powder supply device according to a third aspect of the present invention is the powder supply device according to the first aspect, wherein the vertical partition plate makes an angle formed by an inclined edge of the vertical partition plate facing the opposing wall of the main body with respect to the vertical direction. A value obtained by dividing an intersection line between a plane including the surface of the plate and the opposing wall of the main body portion by the angle with the vertical direction is 1/3 to 1.
The powder supply device according to a fourth aspect of the present invention is the powder feeder according to the first aspect, wherein the vertical partition plate makes an angle formed by an inclined edge of the vertical partition plate facing the opposing wall of the main body with respect to the vertical direction. A value obtained by dividing an intersection line between a plane including the surface of the plate and the opposing wall of the main body with respect to the vertical direction is 1/2 to 1.
In the powder supply device according to a fifth aspect of the present invention, in the first, second, third or fourth aspect, 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
The powder supply device according to a sixth aspect of the present invention is characterized in that, in the first, second, third, fourth or fifth aspect, the partition portion includes a plurality of the vertical partition plates.
The powder feeding apparatus according to a seventh aspect of the present invention is the powder feeding apparatus according to the first, second, third, fourth, fifth or sixth aspect, wherein the powder discharged from the opening is disposed below the opening in the main body. And a transport unit for transporting the

According to the first to fourth aspects of the invention, 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 fifth aspect of the present invention, the movement of the powder in the housing space of the main body can be easily brought close uniformly, so that the state of the powder discharged from the opening can be controlled more easily.
According to the sixth aspect of the invention, since the flow resistance to the flow of the powder toward the opening can be further increased, the moving state of the powder in the accommodation space of the main body can be easily brought close to uniformity.
According to the seventh invention, 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 arrow directional view of (A). (A) is a C-C line longitudinal cross-sectional view of FIG. 1 (B), (B) is an example in which another vertical partition plate 13 is provided. (A) is an explanatory view of a state where the position of the lower end of the vertical partition plate 13 is disposed below the opening 2a, and (B) is a state where the position of the lower end of the vertical partition plate 13 is disposed above the opening 2a FIG. FIG. 6 is an explanatory view of a case where a partition unit 10 has a plurality of vertical partition plates 13. 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 1B which has the main-body part 2 of a different shape, Comprising: (A) is a schematic plan view, (B) is a BB line cross section arrow view of (A). It is a schematic explanatory drawing of the powder supply apparatus 1B which has the main-body part 2 of a different shape.

  The powder supply device of the present embodiment is a device for temporarily storing powder and supplying it to the outside, and is characterized in that the powder can be stably supplied to the outside.

  The powder supply device of the present embodiment can be applied to any equipment. For example, it can be used as an apparatus which stores and supplies powder in equipment required to supply powder stably to the next process. For example, in the case of supplying functional powder raw materials to a reaction apparatus or the next process in a functional material manufacturing plant, in the case of supplying ore to a smelting furnace in a smelting plant, powder such as wheat flour in manufacturing equipment of various products. It is possible to apply also when 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, powder having an average particle diameter of several μm to several hundreds of μm, or having an average particle diameter of several μm to several tens of μm may be mentioned as the powder stored and supplied to the powder supply device of the present embodiment. it can. Further, the type of powder is not particularly limited, and, for example, functional particles, ore, fluorite, flour and the like can be mentioned as the powder stored and supplied to the powder supply device of the present embodiment. In particular, the powder feeding device of the present invention is suitable as a device for storing and feeding the powder to be fed in the presence of a gas such as air between the powders.

<Powder supply device 1>
As shown in FIG. 1, FIG. 2 and FIG. 5, the powder supply device 1 of the present embodiment includes a main body 2 for storing powder, a partition 10 provided in the main body 2, and the main body And a conveyance unit 20 disposed below the second unit.

<Body part 2>
As shown in FIGS. 1, 2 and 5, the main body 2 is a hollow member having a housing space 2 h inside. The main body portion 2 is provided at the lower end thereof with an opening 2a for discharging the powder in the accommodation space 2h to the outside. Although not shown, the powder is supplied from the supply portion provided at the upper portion of the main body portion 2 into the accommodation space 2 h.

  The main body portion 2 has a pair of inclined walls 2f, 2f inclined so as to approach each other toward the lower end thereof. The body portion 2 also has a pair of opposing walls 2g, 2g provided to sandwich the pair of inclined walls 2f, 2f. The pair of opposing walls 2g, 2g are also inclined so as to approach each other toward the lower end thereof. An opening 2a surrounded by lower end edges 2s of the pair of facing inclined walls 2f, 2f and lower end edges of the pair of opposing walls 2g, 2g is formed in the main body portion 2. In other words, the main body portion 2 has a pair of opposing inclined walls 2f, 2f and a pair of opposing walls 2g, 2g which are inclined toward the opening 2a.

In FIG. 1B, the opening 2a is in a substantially rectangular shape long along the lower end edges 2s of the inclined walls 2f, 2f, but the opening 2a may be in a square shape.
Further, in FIG. 1B, although lower end edges 2s of the inclined walls 2f, 2f are parallel to each other, lower end edges 2s of the inclined walls 2f, 2f may not necessarily be parallel. Similarly, in FIG. 1B, the lower ends of the pair of opposing walls 2g, 2g are parallel to each other, but the lower ends of the pair of opposing walls 2g, 2g may not necessarily be parallel. For example, the opening 2a may have a trapezoidal shape, an elliptical shape, a circular shape, or a polygon other than a rectangular shape.
Furthermore, the lower end 2s of the inclined walls 2f, 2f and the lower end of the opposing walls 2g, 2g may have the same height, but the height of the lower end 2s of the inclined walls 2f, 2f and the opposing walls 2g, 2g May be different from one another. Further, the lower ends 2s of the inclined walls 2f, 2f may be slightly deviated in height, or the lower ends of the pair of opposing walls 2g, 2g may be slightly deviated in height.

  In FIG. 1 (B), the lower end 2s of the inclined walls 2f, 2f is linear, but the "lower end 2s of the inclined walls 2f, 2f in this specification" has a lower end 2s in the "direction along the lower end 2s". In the case where is not linear (in the case where there is a curve or unevenness), the longitudinal direction is also included. For example, it is assumed that the opening 2a has a long elliptical shape in the vertical direction of FIG. 1 (B). In this case, the lower end 2s of the inclined walls 2f, 2f is arc-shaped, but the major axis direction of the opening 2a corresponds to "the direction along the lower end 2s of the inclined walls 2f, 2f".

  Further, in FIG. 1A, the pair of inclined walls 2f, 2f are formed to be symmetrical with respect to an intermediate line CL in the width direction of the main body 2 (see FIG. 1A). That is, the inclination angles θ2 and θ3 with respect to the horizontal direction of the opposing inclined walls 2f and 2f are provided to be the same. The inclination angles θ2 and θ3 are appropriately set according to the type of powder accommodated in the accommodation space 2h, the density, the particle diameter, the moisture content, and the powder characteristics (powder characteristics and fluidity) determined by the surface condition, etc. Generally, it is about 50 to 90 degrees, preferably about 50 to 80 degrees.

  The inclination angles θ2 and θ3 of the inclined walls 2f and 2f are desirably the same, but may be different. The difference between the inclination angle θ2 and the inclination angle θ3 when the inclination angles θ2 and θ3 are different is preferably within ± 5 degrees.

  Further, in FIG. 2, inclination angles θ 4 and θ 5 with respect to the horizontal direction of the pair of opposing walls 2 g and 2 g are also set to be the same. The inclination angles θ4 and θ5 are appropriately set according to the type of powder accommodated in the accommodation space 2h, the density, the particle diameter, the moisture content, and the powder characteristics (powder characteristics and fluidity) determined by the surface condition, etc. Generally, it is about 50 to 90 degrees, preferably about 50 to 80 degrees.

  The inclination angles θ4 and θ5 of the pair of facing walls 2g and 2g are desirably the same, but may be different. The difference between the inclination angle θ4 and the inclination angle θ5 when the inclination angles θ4 and θ5 are different is preferably within ± 5 degrees.

<Partition part 10>
As shown in FIGS. 1, 2 and 5, a partition 10 is provided in the housing space 2 h of the main body 2. The partition portion 10 includes a vertical partition plate 13 disposed on an intermediate line CL in the width direction of the main body portion 2. The vertical partition plate 13 is a plate-like member extending in the vertical direction and in the direction along the lower edge 2s of the inclined wall 2f. In the vertical partition plate 13, both end edges 13a and 13c, that is, the end edges 13a and 13c opposite to the pair of opposing walls 2g and 2g described above are inclined from the upper side toward the lower side ( 2 (A)). In other words, the end edges 13a and 13c are inclined so as to approach each other from above to below.

  The vertical partition plate 13 extending in the vertical direction means that the surface of the vertical partition plate 13 is perpendicular (90 degrees) to the horizontal plane, and the surface of the vertical partition plate 13 is perpendicular to the vertical direction. It is a concept that includes both cases of slight inclination (within 90 ° ± 5 ° with respect to the horizontal plane).

<Transport unit 20>
As shown in FIG. 1, FIG. 2 and FIG. 5, the transport section 20 is disposed below the opening 2a of the main body section 2 (note that the detailed structure of the transport section 20 is omitted in the figure). Yes). The transport unit 20 is a device for transporting the powder in the main unit 2 to the next step or the like. The conveyance part 20 should just have a function which can convey the powder in the main-body part 2 continuously every fixed quantity, and is not specifically limited. For example, a known powder transfer device such as a screw conveyer, a belt conveyer, or a chain conveyer can be used as the transfer unit 20.

  With the above configuration, when the transport unit 20 is operated, the powder in the storage space 2 h of the main body 2 can be discharged from the opening 2 a and the powder can be transported to the outside by the transport unit 20. .

  By discharging the powder from the opening 2a, a flow of the powder toward the opening 2a is generated 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 2 h, the resistance to the flow of the powder can be increased. That is, since the vertical partition plate 13 serves as a flow resistance of powder by arranging the vertical partition plate 13 in the housing space 2h, the flow state of the powder in the housing space 2h can be easily adjusted.

<About the vertical partition plate 13>
As shown in FIG. 2A, in the vertical partition plate 13, a pair of end edges 13a and 13c are inclined with respect to the vertical direction. The vertical partition plate 13 serves as a flow resistance of powder moving in the accommodation space 2h as described above, but the angle at which the pair of end edges 13a and 13c are inclined with respect to the vertical direction (inclination angle θa, By adjusting θc), the flow resistance of the powder by the vertical partition plate 13 can be adjusted. That is, by adjusting the inclination angles θa and θc of the pair of edges 13a and 13c of the vertical partition plate 13, the flow state of the powder in the accommodation space 2h and the state of the powder discharged from the opening 2a It becomes easy to control.

  The inclination angles θa and θc of the pair of end edges 13a and 13c of the vertical partition plate 13 are not particularly limited. Type of powder to be stored in the housing space 2h, density, particle diameter, moisture content, powder characteristics (powder characteristics and flowability), etc. determined by surface condition, etc. Further, inclination angle of a pair of opposing walls 2g, 2g It is appropriately set according to θ4 and θ5.

  For example, the inclination angles θa and θc of the pair of end edges 13a and 13c of the vertical partition plate 13 are separated so that the pair of end edges 13a and 13c are separated from the pair of opposing walls 2g and 2g as the inclination goes downward. adjust. Specifically, a value obtained by dividing the inclination angles θa and θc by the angle formed by the line of intersection of the plane including the surface of the vertical partition plate 13 and the opposing walls 2g and 2g of the main body 2 with the vertical direction is 1 It is adjusted to be / 4 to 1, preferably 1/3 to 1, more preferably 1/2 to 1. By adjusting the inclination angles θa and θc of the pair of edges 13a and 13c of the vertical partition plate 13 in this manner, the flow state of the powder in the accommodation space 2h and the state of the powder discharged from the opening 2a can be appropriately determined. The possibility of being able to be in the state is high. Here, assuming that the angle between the plane including the surface of the vertical partition plate 13 and the opposing wall 2g of the main body 2 with respect to the vertical direction is φ, the plane including the surface of the vertical partition plate 13 and the opposing wall 2g When and are orthogonal to each other, φ = 90 ° − (the inclination angles θ4 and θ5 of the facing walls 2g and 2g).

  In FIG. 2A, an example in which the upper end 13t and the lower end 13b of the vertical partition plate 13 are horizontal is described. However, in the vertical partition plate 13, the end edges 13 a and 13 c facing the pair of opposing walls 2 g and 2 g may be inclined with respect to the vertical direction, and the upper end edge 13 t and the lower end edge 13 b are not necessarily horizontal. Good.

  For example, as shown in FIG. 2 (B), both the upper end 13t and the lower end 13b of the vertical partition plate 13 may be inclined with respect to the horizontal. Further, only one of the upper end 13t and the lower end 13b of the vertical partition plate 13 may be inclined with respect to the horizontal.

  Further, in the case where both the upper end 13t and the lower end 13b of the vertical partition plate 13 are inclined with respect to the horizontal, as shown in FIG. 2 (B), the vertical partition 13 has the upper end 13t and the lower edge 13b may have the same inclination angle, or may have different inclination angles.

  Furthermore, the vertical partition plate 13 may have the upper end 13t and the lower end 13b inclined in the same direction (rightward in FIG. 2B), or may be inclined in different directions.

  Furthermore, in the example of FIG. 2, although the case where the vertical partition plate 13 is a trapezoid in which the upper end 13t and the lower end 13b are parallel is shown, the shape of the vertical partition 13 is not particularly limited. The upper end 13t and the lower end 13b may be a non-parallel square, or may be a triangle or a pentagon or more. When it becomes a triangle, it will be in the state where the lower end of edge 13a, 13c was connected (namely, the state where there is no lower end 13b).

  Furthermore, the end edges 13a and 13c of the vertical partition plate 13 only have to have portions inclined with respect to the vertical direction, and the whole does not necessarily have to be inclined with respect to the vertical direction. For example, as shown in FIG. 6 (B), at the end edges 13a and 13c of the vertical partition plate 13, the upper part continuing from the upper end edge 13t is vertical, and the lower part is inclined with respect to the vertical direction You may come to In this case, the end edges 13a and 13c of the vertical partition plate 13 that are inclined with respect to the vertical direction correspond to the inclined end edges referred to in the claims. When the entire edge 13a, 13c of the vertical partition plate 13 is inclined with respect to the vertical direction, the entire edge 13a, 13c corresponds to the inclined edge in the claims.

  Furthermore, the sloped edges at the edges 13a and 13c of the vertical partition plate 13 may not necessarily be straight, and may be curved. In this case, the angle formed by the line connecting the upper end and the lower end of the inclined edge with respect to the vertical direction can be the inclination angle of the inclined edge.

  Furthermore, the vertical partition plate 13 may be a member whose thickness is thinner than the length in the vertical direction or the horizontal direction (the left-right direction in FIG. 2A), and is not limited to a plate-like member. 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 accommodation space 2h of the main body 2, and it becomes difficult to cause problems such as increasing the flow resistance of powder more than necessary. . The vertical partition plate 13 can be formed, for example, by a flat plate whose surface is flat. In this case, it is preferable that the surface be parallel to the vertical direction and parallel to the lower end 2s of the inclined wall 2f (or the direction along the lower end 2s of the inclined wall 2f). Further, besides the flat plate as described above, a plate-like member having projections or the like on the corrugated plate or the surface can also be used as the vertical partition plate 13.

<Arrangement of Vertical Partition Plate 13 of Partition 10 in the Vertical Direction>
The position in the vertical direction of the vertical partition plate 13 of the partition unit 10 is not particularly limited. However, as shown in FIG. 1A, it is preferable that the lower end of the vertical partition plate 13 be disposed at substantially the same height as the lower end 2 of the facing inclined walls 2f, 2f. 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. 3B, the lower end of the vertical partition plate 13 of the partition portion 10 may be disposed above the lower end 2 of the inclined walls 2f, 2f facing each other. 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. The moving state of the powder may be appropriately adjusted so as to approach uniform according to the type of powder supplied to the main body portion 2, the state of the powder, the amount of discharging the powder from the opening 2 a and the like.

  Further, as shown in FIG. 3A, in the case where the connection space 4 is provided between the opening 2a of the main body portion 2 and the conveyance portion 2, the lower end of the vertical partition plate 13 is inclined to be opposed You may arrange so that it may be located below rather than the lower end 2 of wall 2f, 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. The moving state of the powder approaches uniform according to the type of powder supplied to the main body 2 and the state of the powder, the amount of discharging the powder from the opening 2a, the distance from the opening 2a to the transport unit 20, etc. You just have to adjust appropriately.

<Arrangement of Width of Vertical Partition Plate 13 of Partition 10>
Although the case where the vertical partition plate 13 of the partition portion 10 is disposed on the middle line CL in the width direction of the main body portion 2 has been described in the above example, the position where the vertical partition plate 13 is disposed in the width direction of the main body portion 2 Is not particularly limited. Depending on the type of powder supplied to the main body 2 and the state of the powder, the inclination angle of the inclined walls 2 f and 2 f to which the surface of the vertical partition plate 13 faces, etc., the movement state of the powder approaches uniform. It should be adjusted properly.

<Arrangement of Vertical Partition Plate 13 of Partition 10 in the Longitudinal Direction>
The size of the vertical partition plate 13 is also not particularly limited. For example, the vertical partition plate 13 may have its entire length longer or shorter than the length of the opening 2a. For example, both ends of the upper end 13t of the vertical partition plate 13 are positioned outward (that is, closer to the opposite wall 2g) than the lower ends of the pair of opposing walls 2g and 2g, and both ends of the lower edge 13b of the vertical partition 13 are paired The vertical partition plate 13 is disposed inward of the lower end edges of the opposing walls 2g and 2g (see FIG. 2A). Then, when the inclination angles θa and θc of the pair of edges 13a and 13c of the vertical partition plate 13 are adjusted, the flow state of the powder in the accommodation space 2h and the state of the powder discharged from the opening 2a It becomes easy to control.

  The arrangement in the longitudinal direction (vertical direction in FIG. 1B) of the vertical partition plate 13 is not particularly limited. The vertical partition plate 13 has a distance from the pair of end edges 13a and 13c to the pair of opposing walls 2g and 2g (for example, a distance from both ends of the upper edge 13t of the vertical partition plate 13 to the pair of opposing walls 2g and 2g) It may be the same distance or different. If the distance is the same, it becomes easy to bring the flowing state of the powder in the accommodation space 2h and the state of the powder discharged from the opening 2a into a uniform state.

<Multiple vertical partition plates 13>
Although the case where the partition part 10 was equipped with the one vertical partition plate 13 was demonstrated in the said example, the partition part 10 may be equipped with two or more vertical partition plates 13. FIG. For example, the plurality of vertical partition plates 13 are arranged in the width direction of the main body 2. That is, in the facing inclined walls 2f, 2f, a plurality of vertical partition plates 13 are arranged so as to be aligned from one inclined wall 2f toward the other inclined wall 2f (see FIG. 4). Then, since the flow resistance to the flow of the powder toward the opening 2a can be further increased, the moving state of the powder in the accommodation space 2h of the main body 2 can be easily brought close to uniformity. Further, by adjusting the distance between the adjacent vertical partition plates 13 and between the adjacent vertical partition plate 13 and the inclined wall 2f, the flow resistance can be changed according to the position in the housing 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 plate 13 and the inclined wall 2 f may be equidistant, or the distance may be determined depending on the position. You may change it. The moving state of the powder may be appropriately adjusted so as to approach uniform according to the type of powder supplied to the main body portion 2, the state of the powder, the amount of discharging the powder from the opening 2 a and the like. The distance between the vertical partition plate 13 and the inclined wall 2 f corresponds to the distance at the position where the vertical partition plate 13 and the inclined wall 2 f are closest to each other. For example, in FIG. 4, the distance in the horizontal direction between the vertical partition plate 13 and the lower end 2s of the inclined wall 2f is the distance between the vertical partition plate 13 and the inclined wall 2f.

  Furthermore, all of the plurality of vertical partition plates 13 may 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. An appropriate vertical partition plate 13 is adopted so that the moving state of the powder approaches uniform according to the type of powder supplied to the main unit 2, the state of the powder, the amount of discharging the powder from the opening 2a, etc. do it.

<About the main unit 2>
As described above, the main body portion 2 is inclined toward the opening 2a sandwiching the two opposing inclined walls 2f, 2f and the inclined walls 2f, 2f inclined toward each other toward the lower end thereof (a pair of The other shapes are not particularly limited as long as they have opposing walls 2g and 2g). For example, as the main body 2, one that is substantially rectangular in a plan view and whose upper part is a rectangular parallelepiped or a cube can be adopted (see FIGS. 1 and 5), or one whose upper part is cylindrical is also adopted. it can.

  Further, as shown in FIG. 6 and FIG. 7, the main body portion 2 may have a hexagonal shape in cross section of the wall forming the opening 2 a at the lower end edge. For example, the pair of opposing walls 2g, 2g sandwiching the pair of inclined walls 2f, 2f may be configured by two inclined wall surfaces 2ga, 2gb, respectively. Even in this case, the inclination angles θa and θc of the edges 13a and 13c of the vertical partition plate 13 are defined by the plane including the surface of the vertical partition plate 13 and the opposing wall 2g of the main body 2 (either or both of the opposing walls 2ga and 2gb Adjust the value divided by the angle that the line of intersection with the connecting part with the vertical direction makes with the vertical direction to be 1/4 to 1, preferably 1/3 to 1, more preferably 1/2 to 1. . Then, even if the main body portion 2 has a shape as shown in FIGS. 6 and 7, if the inclination angles θa and θc of the pair of end edges 13a and 13c of the vertical partition plate 13 are adjusted, the powder in the accommodation space 2h There is a high possibility that the fluid state of the body and the state of the powder discharged from the opening 2a can be made appropriate.

In addition, each opposing wall 2g in a pair of opposing wall 2g, 2g is a case where each is formed by the inclined wall of 1 sheet (refer FIG.1, FIG.2, FIG.5), and two sheets as mentioned above Not only the case where it is comprised by the inclined wall surface 2ga and 2gb (refer FIG. 6, FIG. 7), the case where each opposing wall 2g is formed by the three or more inclined wall surface is included.
Further, the pair of opposing walls 2g and 2g are not limited to the case where they are formed by the same number of inclined wall surfaces, but also includes the case where the pair of opposing walls 2g and 2g are formed by different numbers of inclined wall surfaces ing. For example, in the case where one opposing wall 2g is formed by one inclined wall surface and the other opposing wall 2g is formed by two or more inclined wall surfaces, or the inclined wall surface of one opposing wall 2g Also included is the case where the number of inclined wall surfaces of the other opposing wall 2g is larger than the number of sheets by one or more.

  Furthermore, the inclined wall 2 f and the opposing wall 2 g of the main body 2 are not limited to flat surfaces, and may be curved surfaces or may change in inclination angle. In this case, the angle formed by the line of intersection of the plane including the surface of the vertical partition plate 13 and the opposing wall 2g of the main body 2 with the vertical direction may be determined as follows. First, the intersection point (upper intersection point) of the horizontal line passing through the upper end of the opposing edge 2 g and the opposing inclined edge and the intersection line is determined. Next, the intersection point (lower intersection point) of the horizontal line passing through the lower end of the opposing wall 2g and the lower end of the opposing inclined edge and the intersection line is determined. Then, an angle formed by a line connecting the upper intersection point and the lower intersection point with the vertical direction is an angle formed by an intersection line of a plane including the surface of the vertical partition plate 13 and the opposing wall 2g of the main body 2 with the vertical direction. It can be done.

<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 every fixed quantity, and is not specifically limited. For example, a known powder transfer device such as a screw conveyer, a belt conveyer, or a chain conveyer can be used as the transfer unit 20. In particular, if the powder is transported along the direction in which the opening 2a of the main body 2 extends using a screw conveyor, it becomes easy to suppress the variation in the amount of powder discharged from the opening 2a of the main body 2. For example, if a screw conveyor with equal 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 (vertical position in FIG. 1B) It can be made smaller. Then, the amount of powder supplied from the opening 2 a of the main body 2 to the transport unit 20, in other words, the amount of powder discharged from the opening 2 a of the main body 2 can be stabilized and adjusted.

  Moreover, although the case where the powder supply apparatus 1 of this embodiment was equipped with the conveyance part 20 was demonstrated 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, in the case of discharging the powder from the opening 2a by gravity, the powder feeding device 1 of the present embodiment can be configured only by the main body 2 without providing the above-described transport unit 20.

  It has been confirmed that the powder supply device of the present invention can adjust the flow state of the powder in the housing space of the main body.

  In the experiment, in the powder supply apparatus in which the vertical partition plate is disposed as shown in FIG. 1, FIG. 2 (A) and FIG. 5 in the main body having the shape as shown in FIG. 1, FIG. 2 and FIG. Continuously, the input of the powder to the main body and the discharge from the opening to the transfer device were performed. Then, by changing the angle of the edge of the vertical partition plate and visually observing the flow state of the powder discharged from the opening, the number of times the flow of the powder in the powder supply device was stopped was confirmed.

  The powder used in the experiment was a copper concentrate which passed through a sieve of 50 μm mesh, and was supplied in a dried state until the water content became 0.2% or less.

  The main body used was one in which the inclined wall and the opposite wall were formed to a height of 2000 mm or more from the opening. The inclination angles of the inclined walls are θ2 and θ3 = 60 °, and the inclination angles of the opposite walls are θ4 and θ5 = 70 ° (that is, φ = 20 °).

  The vertical partition plate is a plate material whose upper side (13t in FIG. 2) has a length of 1800 mm, a height of 800 mm, and a thickness of 30 mm. The vertical partition plate was placed on the middle line in the width direction of the main body, and the upper side was placed at a height of 1100 mm from the opening of the main body. Moreover, the vertical partition plates were installed so that the distance from each end of the upper side to each opposing wall (13a, 13c in FIG. 2) was 350 mm.

The results are shown below.
First, when θa, θc = 5 ° and θa / φ and θc / φ are 1/4, the number of times the powder flow stops is twice, and θa, θc = 7 °. And when θ c / φ was 7/20, the number of times the powder flow stopped was one.
In addition, when θa, θc = 10 °, θa, θc = 20 ° and θa / φ and θc / φ are 1/2 and 1, respectively, the number of times the flow of the powder is stopped is 0 times. The
When θa, θc = 5 °, θa / φ and θc / φ are 1/4, and a vertical portion is provided between the upper end of the vertical partition and the inclined edge (see FIG. 6 (B)) Was twice the number of times the powder flow stopped.

  On the other hand, when the vertical partition plate is not provided, the number of times the powder flow stops is 18 times, and when θa, θc = and θa / φ and θc / φ are 0, 2.5, The number of times the powder flow stopped was 5 times and 12 times, respectively.

  The powder feeding apparatus of the present invention is suitable as an apparatus for storing and feeding the powder in equipment required to stably feed the powder to the next step.

DESCRIPTION OF SYMBOLS 1 powder supply apparatus 2 main-body part 2a opening 2h accommodation space 2f inclined wall 2s lower end edge 2g of inclined wall 2f opposite wall 10 partition part 13 vertical partition plate 13a edge 13c edge 20 conveyance part

Claims (7)

And a main body having an accommodation space for accommodating powder and having an opening at the lower end for discharging the powder in the accommodation space.
The body portion is
A pair of sloped walls sloped towards one another towards their lower ends, said openings being formed between the lower ends;
And a pair of opposing walls disposed so as to sandwich the pair of inclined walls, which are inclined toward each other toward the opening;
In the accommodation space,
There is provided a partition portion having a vertical partition plate provided between the facing inclined walls,
The vertical partition of the partition is
A plate-like member extending in the vertical direction and in the direction along the lower end edge of the inclined wall,
The vertical partition plate is
The powder supply device according to claim 1, wherein the edge opposed to the opposing wall has an inclined edge which is inclined to approach the other edge from the upper side to the lower side. The vertical partition plate is
An intersecting line of a plane including the surface of the vertical partition plate and the opposing wall of the main body portion in the vertical direction makes an angle that the inclined edge of the vertical partition plate facing the opposing wall of the main body portion makes with the vertical direction The powder supply device according to claim 1, wherein the value divided by the angle formed is 1/4 to 1. The vertical partition plate is
An intersecting line of a plane including the surface of the vertical partition plate and the opposing wall of the main body portion in the vertical direction makes an angle that the inclined edge of the vertical partition plate facing the opposing wall of the main body portion makes with the vertical direction The powder supply device according to claim 1, wherein the value divided by the angle formed is 1/3 to 1. The vertical partition plate is
An intersecting line of a plane including the surface of the vertical partition plate and the opposing wall of the main body portion in the vertical direction makes an angle that the inclined edge of the vertical partition plate facing the opposing wall of the main body portion makes with the vertical direction The powder supply device according to claim 1, wherein the value divided by the angle formed is 1/2 to 1. The partition part is
The powder supply device according to claim 1, 2, 3 or 4, wherein the lower end of the powder is located at the same height as the lower end of the opposing inclined wall. The partition part is
The powder supply device according to any one of claims 1, 2, 3, 4 and 5, wherein a plurality of the vertical partition plates are provided. The powder according to any one of claims 1, 2, 3, 4, 5 or 6, further comprising: a conveying portion disposed below the opening in the main body portion for conveying the powder discharged from the opening. Body supply device.

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