JP2012232813A - Granule supplying device using horizontal turntable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a granule supplying device which enables granules to be supplied in a fixed quantity without using a discharge scraper.SOLUTION: A horizontal turntable 8 is provided in a casing 1, a circular interval S is formed between an outer peripheral edge of the turntable 8 and an inner periphery face of the casing, an inner cylinder 4 is coupled to a lower end of a feeding hopper 3, a horizontal flange 5 is provided at a lower edge of the inner cylinder 4, and the inner cylinder 4 is disposed above the horizontal turntable 8 to provide a material discharge interval t, so that the granules fed to the inner cylinder 4 are made to flow out on the horizontal turntable 8 from a lower end of the inner cylinder at a fixed repose angle θ, and a plurality of longitudinal linear projections 6 are formed on an inner face of the inner cylinder 4, and a plurality of radial linear projections 7 are formed on a lower face of the horizontal flange, and by rotating the horizontal turntable 8, the granules flowing out on the horizontal turntable 8 are moved in an outer peripheral edge direction of the table so that the granules are dropped and supplied from the outer peripheral edge 8a of the horizontal rotation table via the circular interval S.

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular material supply apparatus using a horizontal rotating table, and a powder by a horizontal rotating table that can smoothly supply a fixed amount of crushed stone, metal, resin and other granular materials without using a discharge scraper or the like. The present invention relates to a granular material supply apparatus.

  Conventionally, a base is provided in the machine frame, an upright rotary shaft is provided at the center of the base, a rotary table is provided at the upper end of the rotary shaft, a supply hopper is provided on the rotary table, and the rotary table is provided from the hopper. The powder particles are dropped and supplied onto the table, and the powder particles on the table are guided toward the outer peripheral edge of the table or the inner peripheral side of the table by the discharge scraper disposed on the rotary table. A table feeder has been proposed in which a powder is supplied in a fixed amount from the table by dropping it downward from the outer peripheral edge of the table or the opening on the inner peripheral side (Patent Documents 1 and 2).

JP-A-63-71030 Japanese Utility Model Publication 4-27833

  By the way, since all the conventional table feeders are to guide and drop the powder particles downward from the table by the discharge scraper on the table, the powder particles are once brought into contact with the scraper, The route is changed by the scraper and then falls from the table.

  However, due to the nature of the granular material to be supplied, in the conveying path, contact with a metal member such as a discharge scraper should be avoided as much as possible. If the scraper surface is damaged due to contact with the metal scraper and the resulting metal powder or the like is mixed into the granular material as impurities, the raw material is supplied quantitatively without using the discharge scraper. There is a need for a device that does this.

  The present invention has been made in view of the above-described conventional problems, and is a powder by a horizontal rotary table that can smoothly supply a fixed amount of powder particles such as stone, metal, and resin crushed material without using a discharge scraper. It aims at providing a granular material supply apparatus.

In order to achieve the above object, the present invention
First, a machine frame is fixed in a cylindrical casing, an upright rotating shaft is provided on the machine frame, and a horizontal rotary table having the upright rotating shaft as a central axis is provided above the upright rotating shaft. An inverted conical shape in which an annular space for discharging material is formed between the outer peripheral edge of the rotary table and the inner peripheral surface of the casing, an opening is provided on the upper surface of the casing, and the central axis is common to the opening. A charging hopper connected to the lower end of the charging hopper, an inner cylinder having the same central axis as the charging hopper, and a lower edge of the inner cylinder that protrudes horizontally and has a common central axis. An annular horizontal flange is provided, the inner cylinder is disposed above the horizontal rotary table, a material discharge interval is formed between the lower end of the inner cylinder and the horizontal rotary table, and the inner cylinder The granular material put in The inner cylinder is configured to flow out from the lower end portion of the inner cylinder onto the horizontal rotary table with a certain angle of repose, and the inner cylinder is directed toward the inner circumferential surface of the inner cylinder at equal intervals along the inner circumference. A plurality of longitudinal linear projections projecting downward are provided, and a plurality of radial linear projections projecting downward at equal circumferential intervals are provided on the lower surface of the horizontal flange, and the horizontal rotary table is mounted by an electric motor. By rotating, the granular material that has flowed out on the horizontal rotating table is moved toward the outer peripheral edge of the horizontal rotating table, and the granular material is moved from the outer peripheral edge of the horizontal rotating table via the annular interval. It is comprised by the granular material supply apparatus by the horizontal rotary table which is what is supplied by dropping below a casing.

  The machine frame can be constituted by a horizontal machine frame (10). If comprised in this way, with the rotation of the said horizontal turntable, the force (arrow F2 direction) pushed out to the outer periphery direction of a horizontal turntable will be applied to the granular material which exists in the said material discharge space | interval, and the rotation direction of the said horizontal turntable Since the tangential force (arrow F1 direction) which acts is applied, the said granular material is the slant outer periphery direction (arrow A 'direction (arrow A' direction force = arrow F1 direction) along the rotation direction of the said horizontal turntable. Force + force in the direction of arrow F2)) toward the outer peripheral edge of the table, so that the powder particles from substantially the entire circumference of the horizontal rotary table without using a discharge scraper or the like in the conventional feeding device The body can be quantitatively dropped.

  Second, the granular material located on the lower surface of the horizontal flange generates a frictional resistance with the radial linear projections by contact with the radial linear projections on the lower surface of the horizontal flange, thereby The said 1st aspect characterized by the above-mentioned. The said granular material in a material discharge | emission space | interval is comprised so that it can move to the direction which goes to the outer periphery of the said horizontal rotation table based on rotation of the said horizontal rotation table. It is comprised by the granular material supply apparatus by the horizontal rotating table of.

  If comprised in this way, since the granular material located in the lower surface of the said horizontal flange will be prevented from the rotation with the said horizontal rotary table by the contact friction with the said radial linear protrusion, without using a discharge scraper etc. Quantitative discharge can be performed by reliably moving the granular material at the material discharge interval in the direction of the outer peripheral edge of the horizontal rotary table.

  Third, the distance (L) from the position (4b) on the horizontal turntable corresponding to the lower end of the inner cylinder to the outer periphery of the horizontal turntable is the repose angle (θ) from the position (4b). The granular material supply apparatus using the horizontal rotating table according to the first or second aspect, which is twice the distance (K) of the granular material flowing out at the outer edge on the horizontal rotating table.

  That is, it is preferable that the distance (L) from the position (4b) on the horizontal rotary table corresponding to the lower end of the inner cylinder to the outer peripheral edge of the horizontal rotary table is determined according to the equation (1). If comprised in this way, a granular material can be fall-supplied quantitatively and stably from the substantially perimeter area of a horizontal rotary table, without using a discharge scraper etc.

  Fourth, the horizontal rotary table according to any one of the first to third aspects, wherein the number of the radial linear protrusions is greater than the number of the longitudinal linear protrusions. It is comprised by the granular material supply apparatus by.

  For example, as shown in the embodiment, the number of longitudinal linear protrusions is 6 and the number of radial linear protrusions is 12. If comprised in this way, the granular material which flows out out of an inner cylinder can be smoothly guide | induced to the outer peripheral direction of a horizontal turntable with a radial linear protrusion.

  Fifth, the number of the vertical linear protrusions is ½ of the number of the radial linear protrusions, and the vertical linear protrusions correspond to the angular positions of the other radial linear protrusions. It is comprised by the granular material supply apparatus by the horizontal rotary table of the said 4th what is provided.

  If comprised in this way, the circulation phenomenon of the granular material located in the said horizontal flange lower surface can also be prevented, preventing the circulation phenomenon of a granular material by the vertical linear protrusion in the said inner cylinder. Therefore, it is possible to realize a quantitative discharge of the granular material from substantially the entire peripheral area of the horizontal rotary table without using a discharge scraper or the like.

  As described above, according to the present invention, the granular material can be quantitatively dropped from the entire circumference of the horizontal rotary table without using a discharge scraper or the like in a conventional supply device. Even if it is a granular material etc. which need to avoid contact with the discharge scraper etc. of this, it can supply quantitatively without trouble.

  In addition, the granular material located on the lower surface of the horizontal flange is effectively prevented from rotating with the horizontal rotary table due to contact friction with the radial linear protrusions, so that the granular material can be smoothly dispersed without using a discharge scraper or the like. The body can be supplied quantitatively.

  Further, while preventing the granular material from rotating due to the longitudinal linear protrusions in the inner cylinder, the radial linear protrusion can also prevent the rotating particles from being distributed on the lower surface of the horizontal flange. Therefore, it is possible to realize the quantitative discharge of the granular material from the substantially entire circumference of the horizontal rotary table without using a discharge scraper or the like.

It is side surface sectional drawing of the granular material supply apparatus by the horizontal turntable which concerns on this invention. It is a top view of a supply apparatus same as the above. It is a partially cutaway side view of the vicinity of the electric motor of the apparatus. It is the X1-X1 sectional view taken on the line of FIG. It is the X2-X2 sectional view taken on the line of FIG. It is the X3-X3 sectional view taken on the line of FIG. It is the X4-X4 sectional view taken on the line of FIG. It is side surface sectional drawing of material discharge interval t vicinity of an apparatus same as the above. It is a perspective view of the inner cylinder vicinity of an apparatus same as the above. It is the X5-X5 line arrow figure of FIG. (A) is sectional drawing of a longitudinal direction linear protrusion, (b) It is sectional drawing of a radial direction linear protrusion.

FIG. 1 shows a side cross-sectional view of a granular material supply apparatus using a horizontal rotary table of the present invention. In the figure, reference numeral 1 denotes a cylindrical casing centering on a common central axis C. A cylindrical upper casing 1a and a cylindrical lower casing 1b are connected by a bolt B1 at a flange F, and the upper casing 1a. The upper opening edge 1a "is closed by a ring-shaped upper lid 2. Further, an inverted conical discharge hopper 1c having the central axis C as a common center is provided at the lower end of the lower casing 1b with a flange F '. It is connected by a bolt B2.
A circular opening (opening) 2a having the central axis C in common is provided at the center of the ring-shaped upper lid 2, and a raw material charging center around the central axis C is provided on the circular opening 2a. An inverted conical charging hopper 3 is connected via its lower end 3a.

  A cylindrical inner cylinder 4 centering on the central axis C is connected to the lower end portion 3a of the hopper 3 in the direction toward the inside of the casing 1 from the circular opening 2a. An annular horizontal flange 5 is formed on the lower edge of the inner cylinder 4 horizontally in the outer peripheral direction and protrudes outward in the direction perpendicular to the outer periphery of the inner cylinder 4.

  On the inner peripheral surface of the inner cylinder 4, longitudinal linear protrusions 6 extending from the upper end to the lower end of the inner cylinder 4 are provided at six locations at equal intervals along the inner periphery (every 60 degrees). (See FIGS. 4, 7, and 9). The vertical linear protrusion 6 is composed of a vertical protrusion having a lateral width e1 of about 3 mm and a height e2 (projection height in the direction of the center of the cylinder) of about 1.5 mm (see FIG. 11A). It is formed by overlay welding with a width of about 3 mm. These vertical linear projections 6 prevent resistance of the powder particles by providing resistance to the powder particles to be rotated together with the horizontal rotary table 8 described later in the inner cylinder 4.

On the lower surface 5a of the horizontal flange 5, radial linear projections 7 extending radially from the inner peripheral edge to the outer peripheral edge are radially provided at equal intervals in the circumferential direction (every 30 degrees) (FIG. 4). FIG. 7 and FIG. 9). Similar to the longitudinal linear protrusions 6, the radial linear protrusions 7 are constituted by outer circumferential protrusions having a lateral width e1 ′ of about 3 mm and a height e2 ′ (downward protruding height) of about 1.5 mm. (See FIG. 11B), for example, formed by overlay welding with a width of about 3 mm. Of these radial linear projections 7, every other six radial linear projections 7 are continuously provided from the lower end of the longitudinal linear projection 6 on the inner peripheral surface 4 a of the cylinder 4. That is, the number of the vertical linear protrusions 6 is ½ of the number of the radial linear protrusions 7, and the vertical linear protrusions 6 correspond to the angular positions of the radial linear protrusions 7. Is provided. These radial linear protrusions 7 provide resistance to the powder particles to be rotated together with the horizontal rotary table 8 described later, thereby preventing the powder particles from rotating, and the powder particles are outside the horizontal rotary table 8. This is intended to facilitate discharge from the peripheral edge 8a.
Thus, it is preferable that the number of the radial linear protrusions 7 is larger than the number of the longitudinal linear protrusions 6. By configuring in this way, the radial linear projections 7 are surely brought into contact with the granular material positioned below the lower surface 5a of the horizontal flange 5, and the granular material positioned below the lower surface 5a is smoothly smoothed. It can be guided in the outer peripheral direction of the horizontal rotary table 8.

  Here, the term “powder” used in the present embodiment is a concept including, for example, a crushed ore used for an electronic component or the like to 5 mm to 10 mm, and a plastic crushed material of about 5 mm. Is used as a broad concept including fine powders having a diameter of 1 mm or less.

  A disc-shaped horizontal rotary table 8 is provided at a position below the inner cylinder 4 inside the casing 1 with a constant material carry-out interval t (see FIGS. 1, 5, 7, and 8). ). The horizontal rotary table 8 is a flat surface disk having the central axis C as a common center, and an upright rotary shaft 9 for driving is connected to the central axis C on the back surface of the horizontal rotary table 8. The lower end of the rotary shaft 9 is The speed reducer 11 is located in the middle of the casing 1. The speed reducer 11 has an upper portion fixed to a horizontal machine frame 10 fixed to an inner peripheral surface 1 d in the middle of the casing 1.

  And the electric motor 12 is being fixed to the outer side of the said 1 side inner peripheral surface 1d of the said casing 1 with the fixed frame 12a supported by the said casing 1, The drive shaft of the said electric motor 12 is the said casing 1's. It extends into the casing 1 through a wall surface and is connected to the speed reducer 11. Therefore, by driving the electric motor 12, the horizontal rotary table 8 can be rotated in the direction of arrow A at a constant speed.

  The horizontal rotary table 8 is a disk having a smaller diameter than the inner peripheral surface 1a ′ of the upper casing 1a, and a material passes between the outer peripheral edge 8a of the horizontal rotary table 8 and the inner peripheral surface 1a ′. An annular interval S is formed (see FIGS. 5 and 7).

  In FIG. 1, reference numeral 13 denotes a cylindrical cover that covers the outside of the speed reducer 11 in the casing 1 (see FIG. 6). The outer periphery of the speed reducer 11 is centered on the central axis C and the casing 1. A cylindrical portion 13a that concentrically covers is provided. One side surface of the cylindrical portion 13a of the cylindrical cover 13 on the motor 12 side is formed with an opening 13b (see FIG. 6), and the opening 13b and the one side inner peripheral surface 1d in the casing 1 are a pair. The plate-like connection plates 13c and 13c are completely closed, thereby forming a connection portion 13c ′. Further, the lower end of the cylindrical cover 13, that is, the lower end of the cylindrical portion 13a and the lower end of the connecting portion 13c 'are completely closed by a lower end plate 13d, and the upper end of the cylindrical cover 13, that is, the upper end of the cylindrical portion 13a and the above-mentioned The upper end of the connecting portion 13c ′ is completely closed by the horizontal machine frame 10. As a result, the speed reducer 11 is disposed in a sealed space in the cylindrical cover 13.

  Further, an upper cylindrical machine frame 14 centered on the central axis C is fixed above the horizontal machine frame 10, and the upper end of the upper cylindrical machine frame 14 has a ring 14a centered on the central axis C. The outer peripheral edge is connected, and the upper surface of the ring 14 a is disposed close to the rear surface of the horizontal rotary table 8.

  An annular cylindrical space P1 following the annular interval S is formed between the cylindrical machine casing 14 and the inner peripheral surface 1a ′ of the upper casing 1a of the casing 1, and the cylindrical cover 13 and An annular cylindrical space P2 following the cylindrical space P1 is formed between the casing 1 and the inner peripheral surface 1b ′ of the lower casing 1b, and the horizontal rotary table is formed through these cylindrical spaces P1 and P2. The granular material that has fallen from the outer peripheral edge 8a of 8 falls downward in the casing 1, and is discharged from the discharge port 1c 'through the discharge hopper 1c.

  However, the cylindrical space P2 is not completely cylindrical, and as described above, the connection portion 13c ′ is present in a part of the space P2 (see FIGS. 5 and 6). ), The cylindrical space P2 is not a continuous cylindrical space in the connection portion 13c ′, and is a discontinuous space. Further, in the upper part of the horizontal machine casing 10 above the connection part 13c ′, a position slightly shifted from the central axis C as shown in FIGS. Tapered plates 15 and 15 that form a pair of descending inclined surfaces at an angle of about 45 degrees from the horizon are provided.

  Since the apex Q of the tapered plates 15 and 15 is located slightly below the outer peripheral edge 8a of the horizontal rotary table 8 (see FIG. 1), the apex Q falls from the outer peripheral edge 8a onto the tapered plates 15 and 15. The granular material falls downward while being guided to both sides by the taper plates 15 and 15, falls along the connection plates 13 c and 13 c of the connection portion 13 c ′, and falls in the space P 2, in the direction of the discharge hopper 1 c. It is configured to be able to fall smoothly. That is, the granular material that has fallen from the outer peripheral edge 8a smoothly falls along the inclined surfaces of the tapered plates 15 and 15, and therefore does not fall directly on the horizontal machine frame 10.

  Thus, the material falling from the outer peripheral edge 8a of the horizontal rotating table 8 passes through the cylindrical spaces P1 and P2 below from the outer peripheral edge 8a of the horizontal rotating table 8 through the annular space S and is discharged. The material dropped onto the hopper 1c, but the material dropped onto the tapered plates 15 and 15 of the connecting portion 13c 'is distributed in the inclined direction of the tapered plates 15 and 15, and the connecting plates 13c and 15c of the connecting portion 13c' It is smoothly dropped and supplied to the lower discharge hopper 1c along the side of 13c.

  Next, functions of the longitudinal linear protrusions 6 and the radial linear protrusions 7 provided on the inner cylinder 4 and the horizontal flange 5 will be described.

  When the powder particles are charged into the charging hopper 3, the powder particles are filled into the charging hopper 3 and the inner cylinder 4, and are placed on the horizontal rotary table 8 from the lower end of the inner cylinder 4. At this time, the powder particles spread on the inclined surface r1 in the outer peripheral direction (in the direction of the outer peripheral edge 8a) from the lower end of the inner cylinder 4 on the horizontal rotary table 8 at a constant repose angle θ through the material discharge interval t. It will be in a state (refer to inclined surface r1 of the granular material in FIG. 8). In this state, when the electric motor 12 is driven to rotate the horizontal rotary table 8 in the direction of arrow A, the powder particles r stored in the inner cylinder 4 are positioned in the vicinity of the horizontal rotary table 8. According to the rotation of the horizontal rotary table 8 in the direction of arrow A by the frictional force with the upper surface 8b of the horizontal rotary table 8, as shown in FIG. Receives tangential force.

  At the same time, according to the rotation of the horizontal turntable 8 in the direction of arrow A, the granular material having the material discharge interval t is moved from the material discharge interval t to the outer peripheral direction (outward radial direction) by the load of the granular material itself. ) Force pushed to F2 acts.

  Accordingly, the powder particles at the material discharge interval t as a whole are substantially in the direction of the arrow A ′ (F1 + F2), which is the combined force of the force in the direction of the arrow F1 and the force in the direction of the arrow F2, and (Force in the outer peripheral direction) acts, and gradually moves in the direction of the outer peripheral edge of the horizontal rotary table 8 while moving in the direction of the arrow A ′, and the granular material in the material discharge interval t It is gradually pushed out in the direction of the outer peripheral edge 8a of the horizontal rotary table 8 from the material discharge interval t, and falls downward substantially uniformly from the entire circumference of the outer peripheral edge 8a of the horizontal rotary table 8 (arrow G direction in FIG. 8). . At this time, the inclined surface of the granular material moves from r1 to the inclined surface r2, and the granular material reaching the outer peripheral edge 8a of the horizontal rotary table 8 falls quantitatively from the outer peripheral edge 8a ( In FIG. 8, refer to the inclined surface r2 and the arrow G of the granular material).

  Here, in such a supply state, the frictional force between the granular material in the inner cylinder 4 and the inner peripheral surface 4a of the inner cylinder 4 due to some cause (for example, decrease in the granular material in the charging hopper 3) is the horizontal rotation. When the stirring force of the table 8 (the frictional force between the upper surface 8b and the granular material) is reduced, the entire granular material in the inner cylinder 4 becomes a lump as the horizontal rotating table 8 rotates, and the arrow A A so-called rotation phenomenon that rotates in the direction occurs, and as a result, the force for pushing the material in the outer circumferential direction from the material discharge interval t (force in the direction of arrow F2) disappears or decreases, and the supply of the granular material stops. Resulting in. Therefore, in order to prevent such a phenomenon in which the granular material is rotated, a plurality of the longitudinal linear protrusions 6 are formed on the inner peripheral surface of the inner cylinder 4.

  That is, in the state in which the horizontal rotary table 8 is rotating, the powder at the material discharge interval t is pushed out in the direction F2 of the outer peripheral edge 8a of the horizontal rotary table 8 by the rotation of the table 8. Although the force is acting, the granular material in the inner cylinder 4 is defined by the rotational direction A of the horizontal rotary table 8 from the six longitudinal linear protrusions 6 that are evenly present on the inner peripheral surface 4a. In order to receive the pressure (resistance) in the opposing direction evenly, the frictional force between the granular material r and the inner peripheral surface 4a of the inner cylinder 4 is maintained. As a result, the granular material r in the inner cylinder 4 is maintained. The traveling phenomenon is effectively prevented. Therefore, the force (force in the direction of the arrow F2) for pushing out the granular material from the material discharge interval t in the direction of the outer peripheral edge 8a is maintained. Therefore, the granular material in the material discharge interval t is continuously sent out in the direction of the outer peripheral edge.

  If the state in which the granular material is continuously pushed out and dropped from the outer peripheral edge 8a of the table 8 by the rotation of the horizontal rotating table 8, the whole of the granular material positioned at the material discharge interval t is further removed. The powder particles are pushed in the outer peripheral direction (arrow F2 direction), and the powder particles are also located on the lower surface 5a of the horizontal flange 5 like the inclined surface r3 of the powder particles in FIG. Thus, in the state where the granular material is positioned on the lower surface 5a of the horizontal flange 5, if the frictional force between the horizontal flange lower surface 5a and the granular material is reduced, the granular material positioned on the lower surface 5a of the horizontal flange 5 will be described. A phenomenon occurs in which the body rotates together with the horizontal rotary table 8, and when this phenomenon occurs, the pushing force in the direction of the outer periphery of the granular material (the direction of the arrow F2) disappears or decreases. Therefore, by providing the radial linear protrusions 7 on the lower surface 5a of the horizontal flange 5, such a traveling phenomenon is prevented.

  That is, the granular material located on the lower surface 5a of the horizontal flange 5 tries to move in the same direction by the force in the direction of arrow F1 due to the rotation of the horizontal rotary table 8 in the direction of arrow A. At this time, the radial linear projections 7 on the lower surface 5a of the horizontal flange 5 uniformly apply pressure (resistance) in the direction opposite to the rotational direction A to the powder particles in contact with the lower surface 5a of the horizontal flange 5. Therefore, the granular material positioned on the lower surface 5a of the horizontal flange 5 does not rotate with the horizontal rotating table 8, and as a result, the horizontal rotating table is placed on the granular material near the upper surface 8b of the horizontal rotating table 8. The force pushed out in the direction of the outer peripheral edge 8 (arrow F2 direction) is normally applied, and the granular material is pushed out in the outer peripheral edge direction (arrow A ′ direction) of the horizontal rotary table 8. As described above, the radial linear protrusions 7 on the lower surface 5a of the horizontal flange 5 maintain the frictional force with the powder particles located at the material discharge interval t, so that the powder particles are removed from the horizontal rotary table 8. It has a function of pushing in the direction of the peripheral edge 8a.

  Moreover, the force which pushes out the granular material in the outer peripheral direction (arrow F2 direction) on the lower surface 5a of the horizontal flange 5 is the outer peripheral portion of the annular portion (flange portion) of the lower surface 5a of the horizontal flange 5 from the inner peripheral portion. However, the radial linear projections 7 cause a certain resistance force (resistance force against the direction of arrow A) to act on the powder particles located on the outer peripheral side of the horizontal flange 5. The radial linear projections 7 have a function of reliably extruding powder particles located near the outer periphery of the horizontal flange 5 outward (in the direction of arrow F2). Thus, the radial linear protrusion 7 has a function of guiding the powder particles in the direction of the outer peripheral edge without the discharge scraper in the conventional apparatus. Therefore, since the powder particles are supplied in a fixed amount without contacting the discharge scraper, unnecessary breakage of the powder particles can be prevented.

Next, the relationship between the position of the outer peripheral edge 8a of the horizontal table 8 and the inner cylinder 4 will be described.
As shown in FIG. 8, the angle of repose θ of the granular material, the material discharge interval t, and the distance K from which the granular material flows out from the interval t by the angle of repose θ (on the horizontal rotary table 8 corresponding to the lower end of the inner cylinder 4) Assuming that the distance K = t / tan θ from the position 4b to the outer edge (position 4c) of the granular material flowing out at the angle of repose θ is from the position 4b at the lower end of the inner cylinder 4 to the outer peripheral edge 8a of the horizontal table 8. The distance L is
L = (t / tan θ) × 2 (1)
And

  That is, the distance L from the lower end position 4b of the inner cylinder 4 to the outer peripheral edge 8a of the horizontal table 8 is the distance K from the material discharge interval t to the outer edge (position 4c) from which the granular material has flowed out at the angle of repose θ. 2 times.

  With this configuration, the granular material that has flowed out onto the horizontal rotary table 8 by a distance K depending on the angle of repose θ gradually moves in the direction of the outer periphery of the horizontal rotary table 8 (in the direction of arrow A ′) due to the rotation of the horizontal rotary table 8. ) And is smoothly pushed out to the position where the distance L (K × 2) is reached, so that it falls evenly from the outer peripheral edge 8a of the horizontal rotary table 8 and is fixed to the annular space S and the cylindrical space P1. Fall supplied. If the distance L to the outer peripheral edge 8a of the horizontal rotary table 8 is smaller than the distance (K × 2), the amount of powder discharged from the outer peripheral edge 8a is likely to vary, and the distance When L is larger than the distance (K × 2), there is a possibility that the granular material discharged from the outer peripheral edge 8a is interrupted. Therefore, the distance L from the lower end position 4b of the inner cylinder 4 to the outer peripheral edge 8a of the horizontal rotary table 8 preferably satisfies the above formula (1) from the viewpoint of quantitative supply of the granular material.

  Further, the position of the outer peripheral edge 5b of the horizontal flange 5 is preferably set to a position closer to or closer to the position 4c than the position of the distance K of the horizontal rotary table 8 (position 4c in FIG. 8). That is, the length of the horizontal flange 5 (the length of the radial linear protrusion 7) is preferably substantially the same as the distance K or shorter than the distance K ([length of the horizontal flange 5] ≦ distance K). ). By comprising in this way, the fixed supply control can be performed smoothly, suppressing the natural fall of the granular material located in the outer periphery vicinity of the said horizontal turntable 8. FIG. The horizontal flange 5 prevents the powder particles flowing out from the inner cylinder 4 from rising upward from the lower end portion of the inner cylinder 4, and smoothly guides the powder particles in the outer peripheral direction of the horizontal rotary table 8. It also has a function to

  The material discharge interval t is fixed and is changed according to the supply capacity of the granular material. For example, the material discharge interval t is, for example, 20 mm, 25 mm, 30 mm, 35 mm, or the like. Of course, the larger the interval t, the higher the powder supply capability.

  Next, the function of the charging hopper 3 will be described (see FIG. 1). The diameter of the lower end of the charging hopper 3, that is, the diameter (diameter H) of the inner cylinder 4 is set to a minimum diameter so that no bridging of powder particles occurs in the hopper 3. The taper surface 3 ′ has a function of reducing the pressure (direct pressure) of the granular material acting on the horizontal rotary table 8.

  Depending on the properties of the granular material (for example, a granular material having high fluidity), in order to prevent the bridging of the granular material in the charging hopper 3, the charging hopper 3 and the inner cylinder 4 A conical cone 16 can be provided on the central axis in the connecting portion.

  Since the granular material supply apparatus using the horizontal rotary table according to the present invention is configured as described above, its operation will be described below.

  Here, in this embodiment, the case where the granular material which crushed the rough used for industry to about 5 mm-10 mm is supplied quantitatively is demonstrated.

  First, the granular material r is charged into the charging hopper 3 until the granular material r reaches substantially the upper end of the charging hopper 3 (see FIG. 1). Then, the granular material r reaches the upper surface 8b of the horizontal rotary table 8 from the charging hopper 3 through the inside of the inner cylinder 4, and from the lower end position 4b of the inner cylinder 4 through the material discharge interval t to the outer peripheral edge. The inclined surface r1 having the angle of repose θ is formed over the entire circumference of the upper surface 8b of the horizontal rotary table 8 at the lower end of the inner cylinder 4 (see FIGS. 7 and 8).

  In this state, the electric motor 12 is driven to rotate the horizontal rotary table 8 in the direction of arrow A at a constant speed (constant angular speed).

  Then, the powder particles in the material discharge interval t are caused by the load of the powder particles positioned on the upper surface 8b of the horizontal rotating table 8 and the frictional force between the powder particles r and the upper surface 8b of the horizontal rotating table 8. The force in the direction of the arrow F1 along the rotation direction and the force in the direction of the arrow F2 that is pushed in the outward radial direction orthogonal to the rotation direction acts on the body r. The powder particles are uniformly pushed in the direction of the outer peripheral edge 8a (the direction of the arrow A ′), and the granular material reaches the outer peripheral edge 8a of the horizontal rotary table 8, and the inclined surface r2 (see FIG. 8) of the granular material is completely removed. At the stage of being formed over the circumference, the granular material falls downward from the substantially entire circumference or the entire circumference of the outer peripheral end 8a of the horizontal rotary table 8 via the annular interval S (see arrow G in FIG. 8). .

  At this time, in the inner cylinder 4, the granular material r is in contact with the inner peripheral surface 4 a of the inner cylinder 4, but the granular material has six longitudinal directions existing on the inner peripheral surface 4 a of the inner cylinder 4. Since the linear projections 6 come into contact with each other and receive pressure (resistance) from these longitudinal linear projections 6, the frictional force between the inner peripheral surface 4 a and the granular material r becomes large, and the inner cylinder 4 A rotating phenomenon in which the inner granular material r rotates integrally with the horizontal rotary table 8 is effectively prevented, and the extruding of the granular material r from the material discharge interval t toward the outer peripheral edge is smoothly performed. Done.

  Further, the granular material r pushed outward from the material discharge interval t is gradually pushed out in the direction of the outer peripheral edge (in the direction of arrow A ′), and is also located in the region of the lower surface 5 a of the horizontal flange 5. Thus, an inclined surface r3 extending from the outer peripheral edge 5b of the horizontal flange 5 to the outer peripheral edge 8a of the horizontal rotary table 8 is formed over the entire periphery (see FIG. 8).

  At this time, the granular material on the lower surface 5a of the horizontal flange 5 is in contact with the lower surface 5a of the horizontal flange 5, but the granular material r in contact with the lower surface 5a and the granular material r in the vicinity thereof are: Pressure (resistance) is equally received from the twelve radial linear projections 7 present on the lower surface 5a, and the frictional force between the lower surface 5a and the granular material r becomes large. On the other hand, below the lower surface 5 a of the horizontal flange 5, the granular material r in contact with the upper surface 8 b of the horizontal rotary table 8 and the granular material r in the vicinity thereof are caused by the frictional force with the horizontal rotary table 8 to indicate the arrow F <b> 1. In order to receive the force in the direction, the granular material r located below the horizontal flange 5 gradually moves in the outer peripheral direction of the horizontal rotary table 8 while moving in an oblique outer peripheral direction (arrow A ′ direction) with respect to the rotational direction. It is pushed out and the drop supply (quantitative supply) from the outer peripheral edge 8a is smoothly performed.

  Further, the force pushing the granular material r in the outward radial direction (in the direction of the arrow F2) from the material discharge interval t decreases from the inner peripheral side of the horizontal flange 5 toward the outer peripheral edge 5b. Since the protrusions 7 uniformly apply pressure (resistance) to the powder particles in the vicinity of the outer peripheral edge 5b of the horizontal flange 5, the outward projection in the outward radial direction (with respect to the powder particles near the outer peripheral edge 5b of the horizontal flange 5) It also has a function of effectively giving a force of pushing in the direction of arrow F2. Therefore, the granular material r in the vicinity of the outer peripheral edge 5b of the horizontal flange 5 is also smoothly pushed out in the outward direction (arrow A ′ direction), and falls smoothly and quantitatively from the entire circumference of the outer peripheral edge 8a. (FIG. 8 arrow G direction).

  Thus, according to the rotation of the horizontal rotary table 8, the granular material r in the inner cylinder 4 is gradually pushed out from the material discharge interval t toward the outer periphery of the horizontal rotary table 8. Quantitatively drops and is supplied downward from the entire circumference of the peripheral edge 8a (see arrow G in FIG. 8).

  The granular material dropped downward from the outer peripheral edge 8a of the horizontal rotary table 8 reaches the lower discharge hopper 1c through the cylindrical spaces P1 and P2, and quantitatively from the discharge port 1c 'at the lower end of the discharge hopper 1c. To be discharged.

  The granular material r that has fallen on the taper plates 15 and 15 descends along the taper plates 15 and 15 and similarly passes through the cylindrical spaces P1 and P2 to the discharge hopper 1c. Finally, it is quantitatively discharged from the discharge port 1c ′ of the discharge hopper 1c.

  In the case of a highly granular powder having a smaller particle diameter than that of the powder of the present embodiment (for example, the particle diameter is about 1 mm), a cone 16 is installed in the charging hopper 3 and the inside of the charging hopper 3 Can prevent bridging of the granular material r.

  In FIG. 1, 17 is a flange in the charging hopper 3, and 18 is a flange in the discharging hopper 1c, which are connected to the powder inlet and the powder outlet in the plant by bolts and nuts, respectively. In FIG. 1, 9 a is a cover for the upright rotating shaft 9, and a bolt B <b> 3 fixes the cover 9 a to the upper machine casing 10.

  As described above, according to the present invention, without using a discharge scraper or a stirring blade or the like in a conventional supply device, the granular material is removed from substantially the entire circumferential area or the entire circumferential area of the horizontal rotary table 8 having a flat surface. Since it is possible to drop and supply quantitatively, for example, it is possible to smoothly and quantitatively supply a granular material that needs to avoid contact with a metal discharge scraper or the like.

  As described above, the present invention does not include a member that makes contact with (impacts) the granular material, such as a discharge scraper and a stirring blade, in the outflow path of the granular material. The metal scraper is damaged by the contact with the metal powder, and the situation that the metal powder is mixed into the powder raw material does not occur, and the quantitative supply in a state in which the purity of the powder material is maintained can be realized.

  In addition, since the powder particles located on the lower surface of the horizontal flange 5 are effectively prevented from rotating with the horizontal rotary table 8 due to contact friction with the radial linear projections 7, smoothness can be achieved without using a discharge scraper or the like. It is possible to quantitatively supply the powder body by extruding it in the direction of the outer peripheral edge.

  Further, while preventing the granular material from rotating due to the longitudinal linear protrusions 6 in the inner cylinder 4, the rotating phenomenon of the granular material positioned on the lower surface 5a of the horizontal flange 5 from the radial linear protrusions 7 is also achieved. Therefore, it is possible to realize the quantitative discharge of the powder and granular material from the entire circumference of the horizontal rotary table without using a discharge scraper or the like.

  Further, by providing the cone 16 in the charging hopper 3, the pressure of the granular material against the horizontal rotary table 8 can be reduced, and the supply amount fluctuation due to the powder pressure can be suppressed by the cone 16.

  Of course, the number of the longitudinal linear protrusions 6 and the radial linear protrusions 7 is not limited to the above embodiment, and can be changed depending on the aperture size of the inner cylinder 4.

  Since the present invention can realize a quantitative supply of powder by a horizontal rotary table without using a discharge scraper or a stirring blade, for example, various kinds of powder raw materials that are not preferable to contact with a member such as a scraper. A constant supply can be realized without hindrance.

DESCRIPTION OF SYMBOLS 1 Casing 1a 'Inner peripheral surface 2a Circular opening part (opening part)
3 Feeding hopper 4 Inner cylinder 4a Inner peripheral surface 4b Position 4c Position (outer edge)
DESCRIPTION OF SYMBOLS 5 Horizontal flange 5a Lower surface 6 Longitudinal linear protrusion 7 Radial linear protrusion 8 Horizontal rotary table 8a Outer periphery 9 Upright rotating shaft 10 Horizontal machine frame (machine frame)
12 Motor 13 Cylindrical cover 14 Upper cylindrical machine frame C Center axis K Distance L Distance r Granules S Annular interval t Material discharge interval θ Repose angle

Claims (5)

A machine frame is fixed in a cylindrical casing, an upright rotating shaft is provided on the machine frame, a horizontal rotating table having the upright rotating shaft as a central axis is provided above the upright rotating shaft, and an outer side of the horizontal rotating table is provided. An annular interval for discharging material is formed between the peripheral edge and the casing inner peripheral surface,
An opening is provided on the upper surface of the casing, an inverted conical charging hopper having the same central axis is connected to the opening, and an inner portion having the same central axis as the charging hopper is connected to the lower end of the charging hopper. Connect the tube,
At the lower edge of the inner cylinder, an annular horizontal flange that projects horizontally outward and shares the central axis is provided.
The inner cylinder is disposed above the horizontal rotary table, a material discharge interval is formed between the lower end portion of the inner cylinder and the horizontal rotary table, and the granular material charged into the inner cylinder is It is configured to flow out from the lower end of the inner cylinder onto the horizontal rotary table with a certain angle of repose,
Provided on the inner peripheral surface of the inner cylinder a plurality of longitudinal linear protrusions protruding in the center direction of the inner cylinder at equal intervals along the inner circumference,
On the lower surface of the horizontal flange, a plurality of radial linear projections projecting downward at equal intervals in the circumferential direction are provided,
By rotating the horizontal rotary table with an electric motor, the powder particles that have flowed out on the horizontal rotary table are moved toward the outer peripheral edge of the horizontal rotary table, and the powder particles are moved from the outer peripheral edge of the horizontal rotary table. The granular material supply apparatus by the horizontal rotary table which is what drops and supplies below the said casing via the said cyclic | annular space | interval.   The powder particles located on the lower surface of the horizontal flange generate a frictional resistance with the radial linear protrusions by contact with the radial linear protrusions on the lower surface of the horizontal flange, thereby increasing the material discharge interval. 2. The horizontal rotary table according to claim 1, wherein the certain granular material is configured to move in a direction toward an outer peripheral edge of the horizontal rotary table based on rotation of the horizontal rotary table. By powder supply device.   The distance (L) from the position (4b) on the horizontal turntable corresponding to the lower end of the inner cylinder to the outer periphery of the horizontal turntable flows out from the position (4b) at the repose angle (θ). The granular material supply apparatus by a horizontal rotating table according to claim 1 or 2, which is twice the distance (K) of the granular material to the outer edge on the horizontal rotating table.   The granular material by the horizontal rotary table according to any one of claims 1 to 3, wherein the number of the radial linear protrusions is formed so as to be larger than the number of the longitudinal linear protrusions. Feeding device.   The number of the longitudinal linear protrusions is ½ of the number of the radial linear protrusions, and the longitudinal linear protrusions are provided corresponding to every other angular position of the radial linear protrusions. The granular material supply apparatus by the horizontal rotary table of Claim 4 which is a thing.

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