JPS62201664A - Method and device for spreading granular material, liquid or the like - Google Patents

Abstract

PURPOSE:To uniformly and quickly spray a material over a wide range at one time by rotating a spreading plate which is formed in approximately the entire circumference of the outside peripheral edge to a spiral shape in the plane shape at a specified speed in a horizontal direction. CONSTITUTION:The spreading plate 6 of a spreading device is so formed the plan shape over approximately the entire circumference of the outside peripheral edge has the center O on the axial line of a vessel, i.e., on the vertical line running the center of the surface to be spread and that the plane shape of the outside peripheral edge 21a has the spiral shape having the longest distance from the center O approximately equal to the radius of the surface to be spread and arriving at the center thereof after making approximately one turn. While such spreading plate 6 is rotted at the specified speed in the horizontal direction around the center thereof, the material is dropped and supplied at a constant rate onto the central part of the spreading plate 6. The material is thereby uniformly and quickly spread over a wide range t one time.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and apparatus for dispersing granules, liquids, etc., for uniformly dispersing materials such as granules, liquids, etc. inside a cylindrical container. be.

[Prior art and its problems]

For example, in steel mills, coke is spread as a heat insulator on the top surface of hot metal received in a cylindrical hot metal ladle. This coke must be spread evenly so that a coke layer of a certain thickness is formed on the top of the hot metal, but in the past, this work was not mechanized and relied on manual labor. For this reason, not only is it difficult to uniformly spread coke, but there are also problems in that work efficiency is poor and the labor burden on workers is heavy, and there are also problems in terms of safety and environmental health.

The present invention has been made in view of the above circumstances, and provides an adsorbent in a reaction tank, which allows coke to be evenly and quickly spread over hot metal in a hot metal ladle.

The purpose of the present invention is to provide a method and device for dispersing granules, liquids, etc. that can be widely applied to filling various materials such as ion exchange resins, uniformly distributing various liquid materials, charging powder and granules in silos, etc.

Means for Solving Problem C] The method of the present invention is a method for dispersing granules, liquids, etc., in which materials such as granules, liquids, etc. are uniformly dispersed, and the shape of substantially the entire circumference of the outer periphery is While rotating the scattering plate, which is formed in a spiral shape starting from the longest distance from the center and making approximately one rotation to the center, at a constant speed in the horizontal direction about the center, The apparatus of the present invention is configured to drop and supply the above-mentioned material in a quantitative manner, and cause the material to flow down from the outer peripheral edge of the scattering plate to be scattered. A material supplying device is disposed below the material supplying device, and the shape of the outer periphery around the entire circumference is a spiral shape starting from the longest distance from the center in the plan view and making approximately one rotation to reach the center. A scattering plate is provided, which receives the material falling from the material supply device at the upper center and allows it to flow down from the outer peripheral edge, and the scattering plate is horizontally disposed about the center of the scattering plate. It is constructed by attaching a rotating means for rotating at a constant speed in the direction.

The plan view shape of the outer periphery of the scattering plate is the shape of the outer periphery formed on a plane by projecting the scattering plate from an upward point at infinity, and it is the shape of the outer periphery that is generated on a plane by projecting the scattering plate from an upward point at infinity. This is the shape of the outer peripheral edge of the scattering plate.

[Effect]

In the above configuration, the granules are supplied from the material supply device.

When a material such as a liquid is dropped at a constant temperature, the material falls onto the center of the spreading plate, moves from the center to the outer periphery, flows down from the outer periphery, and falls onto the surface to be spread. However, the scattering plate is rotated horizontally at a constant speed by a rotating means around its center, and the plan view shape of approximately the entire circumference of the outer periphery of the scattering plate is approximately - from the longest distance from the center as the starting point.
Because it has a spiral shape that rotates and reaches the center,
The material falls in an evenly distributed manner over the entire circular spread surface whose radius is the longest distance from the center of the spread plate.

〔Example〕

Hereinafter, a first embodiment of the apparatus of the present invention will be described with reference to FIGS. 1 to 6.

In the figure, numeral 1 is a cylindrical container such as a hot metal pot containing hot metal, and the top thereof is open. The spraying device according to the present invention uniformly sprays granular material A such as coke onto a circular sprayed surface 2 such as the upper surface of hot metal inside the container 1,
It is fixedly installed on the floor 3 of the floor above the floor on which the container 1 is placed, and is rotated in the horizontal direction by a material supply device 4 that quantitatively supplies the granular material A by dropping, and a rotation means 5. Meanwhile, the granular material A supplied from the material supply device @4
is received at the upper part and flows down from the outer peripheral edge, and the above-mentioned sprayed surface 2
It is mainly composed of a scattering plate 6 for dispersing water onto the surface.

The material supply device 4 has an inverted conical shape on the lower side, and is supported by a plurality of support columns 7a so that its center line is coaxial with the axis of the container 1 (vertical axis passing through the center of the surface to be spread 2). Large-capacity storage hopper 7 installed on the floor 3 above
The lower side has an inverted conical shape, and consists of a small-capacity weighing hopper 8 suspended below the storage hopper 7 by a plurality of support members 8a so as to be coaxial therewith. and,
The lower discharge port of the storage hopper is equipped with a rotary discharge device 9, and the lower discharge port of the weighing hopper 8 is equipped with a damper 10 that is opened and closed by a cylinder 10a. Each load cell 11 is interposed in the middle of each support member 8a, and these load cells 11 move the storage hopper 7 to the weighing hopper 8.
A fixed amount of granular material A can be taken out inside the container. Further, in the lower part of the weighing hopper 8, there is a guide chute 12 having an inverted conical shape on the upper side and a vertical cylindrical shape on the lower side. It is fixedly attached by a plurality of brackets 12a facing the discharge port of the weighing hopper 8, and the guide chute 12 is inserted into a circular opening 3a formed in a portion of the floor 3 above the container 1. It is now inserted.

On the other hand, the rotating means 5 is provided in the opening 3a of the floor 3. That is, the container 1 is placed in the opening 3a of the floor 3.
An annular support stand 13 having a predetermined width and coaxial with the support stand 13 is fixedly provided, and a circular rail 14 is laid on the upper inner peripheral edge of the support stand 13. An annular rotary table 15 is mounted on the rail 14, and a plurality of support wheels 16 are mounted on the rail 14, coaxially with the container 1, surrounding the weighing hopper 8, and mounted on the lower surface at a predetermined pitch in the circumferential direction. 14, and is rotatably supported.

Further, a roller chain 17 is wound around and fixed to the outer peripheral surface of the rotary table 15 in the circumferential direction, while a sprocket 18 meshed with the roller chain 17 is mounted on the upper part of the support base 13. A driving device @19 is provided, and the rotary table 15 is rotated at a constant speed in the circumferential direction by the operation of the driving device 19. The scattering plate 6 is provided on the inner periphery of the lower surface of the rotary table 15 via a plurality of hanging rods 20 .

The above-mentioned scattering plate 6 has a substantially entire circumferential plan view shape of the outer peripheral edge, and has a center O on the axis of the container 1, that is, a vertical axis passing through the center of the sprayed surface 2, r-roJl (θ/2π)・・・・・・■ However, r
and θ are polar coordinate variables, and ro is a plate material defined by a spiral curve that satisfies the longest distance from the center 0 in the plan view of the scattering plate, and as shown in FIG. The figure shape has the longest distance r from the center 0
. is approximately equal to the radius of the spread surface 2, and the central angle is, for example, 27
The upper scattering plate 21 has a spiral shape defined by the above formula up to 0 degrees, and the remaining part has an arc shape with a center angle of 90 degrees, and the plan view shape of the outer peripheral edge 21a of the upper scattering plate 21 is A guide plate 22a is arranged below the arc-shaped portion, and a guide plate 22a is provided around the outer circumferential edge which has a larger diameter than the arc of the outer circumferential edge 21a, and an inner circumferential edge 22b.
The plan view shape of is the outer peripheral edge 21a of the upper scattering plate 21.
The lower scattering plate 22 has a spiral shape that is a continuous extension of the plan view shape of the lower scattering plate 22. The upper scattering plate 21 has a conical shape with its center (same as the center 0 of the scattering plate 6) as the top and its diameter increases as it goes downward, and the lower scattering plate 22 has a conical shape with its center (same as the center 0 of the scattering plate 6) as the top, and the lower scattering plate 22 has a conical shape with its center (same as the center 0 of the scattering plate 6) as the top. It has an inverted conical slope shape with the top at the center O (same as the center O), and the diameter decreases as it goes downward. In addition, the upper scattering plate 21
A plurality of guide plates 23 (four in the figure) extending along the generatrix to near the center are attached at equal intervals in the circumferential direction, and some of these guide plates 23 are connected to the lower scattering plate 22. is tilted downward so that the granular material A flows down toward the center O (that is, flows down from the inner peripheral edge 22b), and the upper scattering plate 21 and the lower scattering plate 22 are fixed with a gap between them, and the lower scattering On the other side that is connected to the guide plate 22a on the outer peripheral edge of the plate 22 and is not on the spiral inner peripheral edge 22b of the lower scattering plate 22, it is connected to the upper scattering plate 21 to prevent the granular material A from flowing down. Lower dispersion plates 22 are connected to each other, and the lower ends of the hanging rods 20 are fixed to these guide plates 23. Note that 24 in the figure is a cylindrical hood.

Here, the above-mentioned equation 0 will be explained in detail.

First, when a granular material A is dropped onto the apex of a cone C as shown in FIG.
The particles are dispersed and flow radially down along the generatrix toward the outer periphery of the circle 811c, and fall from the outer periphery. The outer peripheral edge of such a cone C is formed so that the shape in plan view is spiral as shown in FIG. 3(b). Of the inclined surface of the cone C' whose outer periphery is spiral-shaped, as shown in Fig. 3 (
C) Any two fan-shaped surfaces T with the same central angle θa
+, consider Tz. These fan-shaped surfaces T+.

At Tz, the maximum and minimum distances from the apex to the outer peripheral edge are determined as r+, r2 for the fan-shaped surface T+, r3. Let it be r4. When each fan-shaped surface TI, T2 is rotated once at a constant speed in the horizontal direction around its apex and the granular material A is quantitatively dropped on the apex, the granular material A falls from the distance rl to r2 on the fan-shaped surface TI. At the outer peripheral edge of the fan-shaped surface T2, the distance r3
to r4, respectively, and fall through the outer peripheral edge.

Here, since both the fan-shaped surfaces T+ and Tz have the same central angle θa, the suspension of the granular material A falling from each outer peripheral edge is the same, and from the fan-shaped surface T+, a circular ring with an area of π(rI2 rz2) is formed. On the band, from the fan-shaped surface T2, the area is π(r32-r
42) The granules A are sprinkled on the respective annular belts. Therefore, if the shapes of the outer peripheral edges are determined so that the areas of these annular bands are equal to each other, the amount of the granular material A to be spread on these annular bands becomes uniform.

That is, in FIG. 4, if the granules A supplied to the center O of the sector 0PoP with the central angle θ fall from the arc PoP, and the granules A are continuously supplied as the sector OPa P rotates once. , the granules A are scattered in the annular zone between the longest radius ro and the radius r. The area S of this circular zone is S=π(ro2-r2)''・
...[), and since the amount of granules A scattered over the area S of this annular zone is equal to the mother of granules A flowing down along the sector 0PoP with the central angle θ, the longest radius ro If the total area of the spread surface 2 formed by is 80, then θ/2π-8/S.

That is, S=(θ/2π)So ・・・・・・■
Therefore, from these equations, (θ/2π)So=π(ro2 72). In this formula, So−πro 2 ...
■ Substituting the relational expression, r2-ro2 (1(θ/2π)), that is, r = r of [core Σ4 cho......■
is obtained. According to the conical scattering plate 6 whose outer peripheral edge is defined in plan view by this spiral curve, the granules A can be uniformly dispersed over the entire surface 2 to be sprayed.

Further, in FIG. 5, if the scattering plate 6 has a shape in plan view of its outer peripheral edge in a spiral conical shape defined by the above formula 0, then the size of the granular material A, the supply port (
Depending on the speed), etc., the diameter of the guide chute 12 that supplies the granules A to the top of the scattering plate 6 becomes large, and the granules A supplied to the top of the scattering plate 6 have a diameter that is approximately equal to the diameter of the guide chute 12. It falls over a range of d. In such a case, the granules A supplied to the shaded area W fall directly onto the surface 2 to be sprayed without being received by the scattering plate 6 .

In order to prevent this, the above range W includes, as mentioned above,
A lower scattering plate 22 is provided, and the lower scattering plate 22
The plan view shape of the inner peripheral edge portion 22b is also formed in a spiral shape that satisfies the above formula 0.

Furthermore, the above-mentioned scattering plate 6 has the above-mentioned 0
Ideally, it should be formed based on the formula, but in reality it is 0
It is difficult to create a spiral shape based on a formula. Therefore, the spiral shape can also be created using the following simple method instead of using Formula 0. That is, as shown in FIG. 6, first, a circle is divided into n equal parts and dividing lines are drawn so as to form n sector shapes having equal areas. Then,
Draw dividing concentric circles that divide the above circle into n rings so that each area is equal. In other words, the area of each annular zone (one is a small circle) divided into n on the above circle is M+, M2,
..., the width J of each ring band so that Mn is equal to each other
Determine Ir 42 ,..., Jn (J+ <J2ku...<Jn) and draw n-1 divided concentric circles. Then, starting from the intersection of a certain dividing line of a circle and the outer periphery of the circle, the adjacent dividing line on the counterclockwise side of the dividing line, for example in FIG. , and the intersection between the adjacent dividing line on the counterclockwise side and the adjacent dividing concentric circle on the inner side of the above dividing concentric circle.
By sequentially connecting them with gentle curves, the spiral curve R shown in Fig. 6, which rotates 360 degrees from the starting point and reaches the center of the circle mentioned above, is obtained. Furthermore, by connecting each of the above-mentioned intersection points with a straight line, a spiral line segment R' shown in FIG. 6 is obtained. These spiral curves R or spiral line segments R
' are both spiral-shaped approximate curves or line segments defined by the above formula 0, and the shape of the peripheral edge of the dispersion plate 6 can be determined using these.

Next, one embodiment of the method of the present invention will be described.

The method of the present invention is suitably carried out using the spraying device configured as described above. That is, in the spraying device configured as described above, first, a fixed amount of the granules A to be sprayed onto the surface 2 to be sprayed is taken out from the storage hopper 7 and stored in the weighing hopper 8. Next, the drive bag @ 19 is operated to rotate the rotary table 15 in the circumferential direction around its axis, thereby moving the spreading plate 6 around the vertical axis passing through the center of the surface 2 to be spread as shown by the arrow in FIG. Rotate horizontally at a constant speed as shown in .

Simultaneously with the rotation of the scattering plate 6, the granular material A contained in the window M contained in the weighing hopper 8 is dropped and supplied in a fixed concave manner by opening the damper 10. Then, the granular material A moves through the guide chute 1
2 through the upper part of the scattering plate 6 The top (center) of the scattering plate 21
fall on top. Then, it slides down the sloped upper surface, and most of it falls directly from the outer peripheral edge 21a and is sprayed on the sprayed surface 2, and some of it falls from the outer peripheral edge 21a onto the lower scattering plate 22, and inside it. It is sprayed onto the surface 2 to be sprayed from the peripheral edge 22b. Here, the outer peripheral edge 21a of the upper scattering plate 21 and the inner peripheral edge 22b of the lower scattering plate 22 both have a spiral shape in plan view defined by the above formula 0, and these scattering plates 21.22 These dispersing plates 21.
The granules A falling from the outer circumferential edge 21a and the inner circumferential edge 22b of 22 are uniformly scattered over the entire surface 2 to be sprayed.

In addition, in the above, the upper scattering plate 21 and the lower scattering plate 22
Each inclination angle α1. α2. These rotational speeds N and granules A
The falling supply mQ of each should be determined by actual machine tests, etc., and differs depending on various conditions such as the type and properties of the granular material A.
If the coke is up to +, α1 = α2 − 35°
, N=4.8 rpm, and the falling feed IQ is preferably about 133 rotations per rotation of the scattering plate 6.

Next, some other embodiments of the present invention will be described.

FIG. 7(a) to C) shows the second embodiment,
This embodiment is different from the inner peripheral edge 22 in the first embodiment.
In place of the spiral-shaped lower scattering plate 22, a lower scattering plate 30 having a different shape is used, and the plan view shape of the lower scattering plate 30 is vertical to the center of the upper scattering plate 21. The radius of a circle having its apex near the axis (vertical axis passing through the center of the spread surface 2) and having a plane length d of the shortest generatrix of the upper scattering plate 21 and a diameter approximately equal to the diameter of the guide chute 12. The triangular portion 30a has a triangular portion 30a having two adjacent sides having a length substantially equal to the longer planar length).
The rectangular receiver with the guide plate 30b on the outer periphery and the side edge on the outer side of a has a structure in which parts 30C are connected, and the apex of the triangular part 30a is downward. Consists of sloping flat plates.

8 and 9 show a third embodiment. In this embodiment, the scattering plate 31 has the same shape in plan view as the upper scattering plate 21, but has a horizontal flat upper part. It consists of a dispersion plate 31a and a lower dispersion plate 31b, which has the same plan view shape as the lower dispersion plate 22 or the lower dispersion plate 30, but is disposed horizontally. A vibration device 32 for vibrating the scattering plate 31 is attached to the scattering plate 31. This excitation device 32 is an electromagnetic magnet that excites and de-energizes an excitation member 32b made of magnetic gold fi, which is biased in a predetermined direction by a leaf spring 32a, for example, with an alternating current supplied via a slip ring 32c. 32d, the vibration member 32b is moved up and down to vibrate the scattering plate 31 by suctioning or releasing the suction. It is locked by a locking member 32e in a state where rotation of is allowed, and
Device body 32f with plate spring 32a and electromagnet 32d attached
is fixed to a required fixed part via a bracket 32g. In this embodiment, the scattering plate 31 is
is rotated in the circumferential direction by the rotating means 5 while being vibrated, and the granules A are dropped and fed onto the center of the scattering plate 31 from the weighing hopper 8 through the guide chute 12. Then, the granular material A spreads radially in the radial direction due to the vibration of the scattering plate 31, and its periphery (outer periphery in the upper scattering plate 31a, inner periphery or triangular part in the lower scattering plate 31b).
The particles fall from the ground and are sprayed onto the surface 2 to be sprayed. Note that the vibration device 32 may be fixed to the dispersion plate 31 itself instead of the required fixed part. Further, the current supplied to the vibration device 32 may be taken from two rails of the rotary table 15, for example. Furthermore, the vibration excitation device 32 is
When added to the scattering plate 6 of the embodiment, in cases where it is difficult for the granules A to flow down on the scattering plate 6, or when it is required to increase the scattering speed of the granules A,
This is advantageous because the vibration device 32 can be actuated and discharged as necessary to promote the flow of the granular material A.

Furthermore, it goes without saying that the present invention is applicable not only to the dispersion of granular material A such as coke, but also to the dispersion of various liquid materials.

In addition, when dispersing granular materials or liquid materials with extremely small particle sizes, if these materials can be dropped and supplied within an extremely narrow range at the center of the dispersion plate 6,
The lower dispersion plate 22, 30.31b can also be substantially omitted.

Further, in the first to third embodiments, the explanation was given using a scattering plate whose longest distance from the center in the plan view shape is approximately equal to the radius of the spread surface, but the present invention is not limited thereto. Alternatively, the spreading plate may be moved at a constant speed over a wide spread surface. For example, for an annular spread surface, a dispersion plate rotated by a rotating means such as rotation and revolution may be moved in an annular shape together with a material supply device at a constant speed. By sequentially moving the material according to the shape, the material can be uniformly spread on surfaces of various shapes.

Further, in each embodiment, the material supply device of the present invention was configured with the storage hopper 7 and the weighing hopper 8, but it may also be configured with only the storage hopper 7 and the discharge device 9 provided at its lower part. Any material that can quantitatively supply the material to the center of the plate may be used.

〔Effect of the invention〕

As explained above, in the present invention, a material supplying device rotates a scattering plate whose outer periphery has a spiral shape in a plan view by a rotating means at a constant speed. Materials such as granules are quantitatively dropped and supplied onto the center of the scattering plate, and the material is allowed to flow down from the outer periphery of the scattering plate, so that it can be spread over a wide area at once. The material can be spread evenly and quickly, and the device has a simple structure and does not require large operating power.

[Brief Description of the Drawings] Figures 1 to 6 show an embodiment of the present invention.
Figure 1 is an overall sectional view of the spraying device, and Figure 2 is the n-
I arrow sectional view, Figures 3 (a) to d), Figures 4 and 5 are explanatory diagrams for explaining the spiral curve, Figure 6 is an explanatory diagram of a simple method for creating the spiral shape, and , FIG. 7 is a partial view without showing the second embodiment, FIG. 7(a) is a plan view of the scattering plate, and FIG. 7(b) is a view taken from the ■b-■b arrow in FIG. 7(C) is a plan view of the lower dispersion plate, FIGS. 8 and 9 show the third embodiment, FIG. 8 is an overall sectional view, and FIG. 9 is a part of the vibration device. It is an enlarged cross-sectional view of A... Granular body, 4... Material supply device,
5... Rotating means, 6.31... Spreading plate.

Claims (6)

[Claims] (1) Granules, granules that uniformly disperse materials such as liquids,
In a method of dispersing liquids, etc., a dispersion plate is formed in a spiral shape, in which the shape of approximately the entire circumference of the outer periphery starts from the longest distance from the center in a plan view, and rotates approximately once to reach the center. The material is quantitatively dropped and supplied onto the center of the scattering plate while rotating at a constant speed in the horizontal direction as the center, and the material is spread by flowing down from the outer periphery of the scattering plate. How to spray granules, liquids, etc. (2) The spiral shape of the outer peripheral edge of the scattering plate in plan view is r=r_0√[1-(θ/2π)] where r and θ are polar coordinate variables, and r_0 is the center of the scattering plate in plan view. 2. The method for dispersing granules, liquids, etc. according to claim 1, characterized in that the method is defined by a spiral curve that satisfies the longest distance from . (3) The spiral shape of the outer peripheral edge of the scattering plate in plan view is r=r_0√[1-(θ/2π)] where r and θ are polar coordinate variables, and r_0 is the center of the scattering plate in plan view. The method for dispersing granules, liquids, etc. according to claim 1, characterized in that the method is defined by a spiral shape formed by connecting a plurality of points on a spiral curve with straight lines that satisfy the longest distance from the spiral curve. (4) A granular material that uniformly disperses materials such as granular material and liquid;
In the method of dispersing liquid, etc., a material supply device that quantitatively drops the above-mentioned material is arranged, and below the material supply device, the shape of approximately the entire circumference of the outer periphery is the longest from the center in the plan view. A scattering plate is provided, which is formed in a spiral shape starting from the distance and making approximately one rotation to the center, and receives the material dropped from the material supply device at the upper part of the center and causes it to flow down from the outer peripheral edge. . A device for dispersing granules, liquids, etc., characterized in that the dispersion plate is provided with a rotating means for rotating the dispersion plate in a horizontal direction at a constant speed about its center. (5) The spiral shape of the outer peripheral edge of the scattering plate in plan view is r=r_0√[1-(θ/2π)] where r and θ are polar coordinate variables, and r_0 is the center of the scattering plate in plan view. 5. The device for dispersing granules, liquids, etc. according to claim 4, characterized in that the device is defined by a spiral curve that satisfies the longest distance from . (6) The spiral shape of the outer peripheral edge of the scattering plate in plan view is r=r_0√[1-(θ/2π)] where r and θ are polar coordinate variables, and r_0 is the center of the scattering plate in plan view. 5. The device for dispersing granules, liquids, etc. according to claim 4, characterized in that the device is defined by a spiral shape formed by connecting a plurality of points on a spiral curve with straight lines that satisfy the longest distance from the spiral curve.