KR102092751B1 - Closing apparatus and method for tap hole - Google Patents

Abstract

The present invention, a dart head formed so as to close the outlet of the container using the outer circumferential surface, one side guides through the center of the dart head, the guide to axially rotate the guide using the vortex flow of the processing material contained in the container It includes an impeller mounted on the other side of the, and the discharge port closing device that can be inserted into the container to close the discharge port while discharging the processed material through the discharge port and a method for closing the discharge port applied thereto, the discharge port is stable A device and method for closing the outlet that can be closed is presented.

Description

CLOSING APPARATUS AND METHOD FOR TAP HOLE}

The present invention relates to an outlet closing device and method, and more particularly, to an outlet closing device and method capable of stably closing the discharge port using a flow of the processed material while discharging the treated product from the container.

The converter is a reactor for refining molten steel, and the molten steel refined in the converter is discharged to the ladle through the outlet. Usually, the exit opening is formed on the upper part of the converter, and the converter is tilted when the molten steel exits. As the amount of molten steel in the converter decreases and reaches a predetermined level as the molten steel exits, slag in the converter may be mixed with the molten steel and flows into the exit, so the exit is closed before that. At this time, the dart is inserted into the converter to move the dart to the upper part of the outlet together with the molten steel, and the outlet is closed by inserting the dart into the outlet using the discharge pressure of the molten steel.

On the other hand, when the temperature of the molten steel is at the time of exiting, the degree of good of the slag varies depending on the temperature of the molten steel, the amount of oxygen in the molten steel, etc. If the good of the slag is poor and poor, the slag is cured. When the slag is hardened, the dart does not completely exit the slag, and the dart is placed in the slag.

In addition, when the iron oxide component such as T-Fe in the slag is high or the thickness of the slag is thin, the dart floats in the slag or fails to vertically control the posture while lying on the molten metal surface.

In the above-described case, the dart cannot close the exit hole, and thus, the slag flows into the ladle together with the molten steel and is transported to the next process.

The technology underlying the present invention is published in the following patent documents.

KR 10-2013-0015149 A

The present invention provides a device and a method for closing and closing a discharge port stably by controlling the posture and movement of a dart head using a vortex flow of a treatment material generated around a discharge port of a container.

An outlet closing device according to an embodiment of the present invention, the outlet closing device capable of closing the outlet by being introduced into a container containing a processed material, a dart head formed to close the outlet using an outer circumferential surface; One side guides through the center of the dart head; And an impeller mounted on the other side of the guide so that the guide can be axially rotated using the vortex flow of the treatment.

The impeller may include at least one blade to impart motility toward the outlet to the dart head using axial rotation.

The impeller and the guide may be formed in size and weight so as to be positioned below the dart head within the processing object.

The impeller and the guide may be formed with an outer diameter smaller than the inner diameter of the outlet so that it can be inserted into the outlet.

The guide, a guide rod extending in one direction, one side is inserted into the dart head; A core material extending in one direction through the center of the guide rod and protruding to one side of the guide rod and to the outside of the dart head; A mounting portion mounted in one direction on the other side of the guide rod and the impeller is detachably mounted; It may include; a stopper coupled to a portion protruding from the dart head of the core material.

The impeller includes a shaft extending in one direction; A blade protruding from the outer circumferential surface of the shaft and extending in one direction; It may include a; protruding from one side of the shaft to the outside, mounted on the other side of the guide.

The outer circumferential surface of the shaft includes a blade region in which the blade is located and the rest of the regions except for this, and a length in one direction of the blade region may be greater than a length in one direction of the remaining region.

The protruding length of the blade is smaller than the outer diameter of the shaft, the protruding length is larger as it is closer to the guide, and the protruding length is smaller as it is farther from the guide.

The blade may gradually change the protruding length from the end of the shaft side toward the other end of the both ends.

The fastening portion is provided with a thread on the outer circumferential surface so as to be detachably mounted on the other side of the guide, the winding direction of the thread may be formed in a direction opposite to the rotation direction of the vortex flow.

A method for closing a discharge port according to an embodiment of the present invention includes: a process of tilting a container containing a processed material and discharging the processed material through a discharge port formed on an outer circumferential surface of the container; Inputting a closing device into the container; Controlling posture and motion of the outlet closing device using the vortex flow of the processed material; And a process of inserting the outlet closing device into the outlet so as to close the outlet.

The process of controlling the posture and movement may include: rotating the outlet closing device by using an blade provided in the outlet closing device; Aligning the central axis of the outlet closing device to the center of the outlet using the axial rotation; And a process of moving the outlet closing device to the outlet side using the axial rotation.

According to an embodiment of the present invention, by using the vortex flow of the treated material generated around the outlet of the container while discharging the processed object from the container, the attitude and movement of the dart head injected into the treated object is controlled and the outlet is blocked by the dart head The outlet can be closed stably.

For example, when applied to a converter refining facility, it is possible to obtain an outlet closing device including a dart head and a guide and an impeller that can be detachably attached to the front of the furnace to close the outlet, and use the molten steel during the course of exiting the molten steel. The impeller is rotated using the vortex flow, the guide can be aligned with the central axis of the exit, and the dart head can be provided with mobility toward the exit. Therefore, the posture and movement of the dart head can be controlled so that the dart head is accurately directed to the exit hole, and the exit hole can be stably closed.

In particular, since the impeller is not directly attached or detached to the dart head, but is connected through a guide having a predetermined length, it is advantageous to control the posture in the vortex flow. In addition, even if the center axis of the sprue and the spout are not vertical, the rotation of the impeller can resist the gravity in the vertical direction and can be aligned with the center shaft of the spout, so that the angle of the center shaft of the spout with respect to the molten steel spout is The hatch can be closed stably regardless.

In addition, the guide and the dart head are rotatably connected to each other so as to minimize the rotation of the guide to the dart head, and the periphery of the periphery of the periphery of the center of the dart head is prevented from being rotated by friction with the guide You can increase the weight to increase the moment of inertia of the dart head. Accordingly, even while the impeller and the guide rotate, the dart head does not rotate, or rotation can be minimized, and the dart head can be more stably brought into close contact with the exit.

From this, it is possible to smoothly close the hatch and minimize the introduction of slag into the next process. Accordingly, it is possible to easily control the components of molten steel in a subsequent refining process of molten steel, and productivity can be improved.

1 is a schematic view showing a treatment object treatment facility and an outlet closing device according to an embodiment of the present invention.
2 is a schematic view showing the operation of the outlet closing device according to an embodiment of the present invention.
Figure 3 is a three-dimensional view of the outlet closing device according to an embodiment of the present invention.
Figure 4 is a side view showing a part of the outlet closing device according to an embodiment of the present invention.
5 is a cross-sectional view of an outlet closing device according to an embodiment of the present invention.
6 is a view showing an outlet closing device according to a modification of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and will be implemented in various different forms. Only the embodiments of the present invention are provided to make the disclosure of the present invention complete, and to fully inform the scope of the invention to those skilled in the art. The drawings may be exaggerated to describe embodiments of the present invention, and the same reference numerals in the drawings refer to the same elements.

1 is a schematic view showing a treatment object treatment facility and an outlet closing device according to an embodiment of the present invention. Here, Fig. 1 (a) is a schematic view showing a state in which the outlet closing device controls the posture and movement using the vortex flow of the treatment, and Figure 1 (b) is a state in which the outlet closing device closed the outlet of the container It is a schematic diagram showing.

FIG. 2 is a schematic view showing an operation of an outlet closing device according to an embodiment of the present invention by enlarging portion A of FIG. 1.

Figure 3 is a three-dimensional view of the outlet closing device according to an embodiment of the present invention. At this time, Figure 3 (a) is a three-dimensional view showing the state viewed from the bottom of the outlet closing device, Figure 3 (b) is a three-dimensional view showing the state viewed from the top of the outlet closing device.

Figure 4 is a side view showing a part of the outlet closing device according to an embodiment of the present invention. 5 is a cross-sectional view of an outlet closing device according to an embodiment of the present invention. At this time, Figure 5 (a) is an exploded cross-sectional view of the outlet closing device, Figure 5 (b) is a combined cross-sectional view of the outlet closing device.

Hereinafter, a device for closing an outlet according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5. The outlet closing device 300 according to an embodiment of the present invention is an outlet closing device capable of closing the outlet 11 of the container 10 by being introduced into the container 10 containing the processed material M, and using an outer circumferential surface By using the dart head 310 formed so as to close the outlet 11, the guide 320 through one side of the dart head 310, and the vortex flow (V) of the treatment (M) It includes an impeller 330 mounted to the other side of the guide 320 to rotate the guide shaft axially.

Here, one side of the guide 320 is a portion connected to the dart head 310, refers to the top or top of the guide 320, and the other side of the guide 320 is a portion connected to the impeller 330, the guide It may refer to the lower portion or the lower portion of the 320.

The outlet closing device 300 according to the embodiment of the present invention may be referred to as a self-supporting dart device using a molten steel vortex flow.

The processed material M may include molten steel. The container 10 may include a converter. The container 10 can accommodate the processed object M, and the processed object M can be processed in various ways. For example, the container 10 may refine the processed product M.

The converter is a high-temperature reactor provided to refine the molten steel, and the molten steel refined in the converter may be discharged to the ladle 20. The outlet 11 may include an outlet of the converter. The outlet 11 may be located on top of the container 10. The outlet 11 may penetrate the outer circumferential surface of the container 10 and communicate with the inside of the container 10. The container 10 can be tilted to discharge the processed material M in the container 10 to the discharge port 11. The outlet closing device 300 may close the outlet 11 so that the slag S is not discharged together with molten steel.

The dart head 310 is formed to close the outlet 11 using an outer circumferential surface. The dart head 310 may be formed in a hemispherical shape with a flat upper surface and a convex lower surface. Alternatively, the dart head 310 may be formed in a funnel shape in which the outer diameter becomes smaller as it goes from top to bottom. The upper outer diameter of the dart head 310 may be larger than the inner diameter of the outlet 11, and the lower outer diameter of the dart head 310 may be smaller than the inner diameter of the outlet 11.

The dart head 310 may be inserted into the outlet 11 in a form fitted to the upper portion of the outlet 11 by the pressure of the processed object M to close the outlet 11. The dart head 310 may include a refractory material. For example, the dart head 310 may be formed of a body having a funnel-shaped refractory block 311. The dart head 310 may be closed by blocking the upper end of the outlet 11 with a convex outer circumferential surface of the lower surface.

A guide insertion hole 312 may be formed through the center of the lower surface of the dart head 310, and a core through-hole 313 may be formed through the center of the upper surface of the dart head 310. The upper end of the insertion hole 312 and the lower end of the through hole 313 communicate with each other, and since the inner diameter of the insertion hole 312 is larger than the inner diameter of the through hole 313, a stepped jaw may be formed in these connecting portions.

The dart head 310 may be mounted to the guide 320 through the insertion hole 312 and the through hole 313.

On the other hand, depending on the state of the slag (S) and the processed material (M) in the container 10, the dart head 310 may not reach smoothly to the inlet side of the outlet (11). To prevent this, the guide 320 and the impeller 330 may control the posture and movement of the dart head 310 using the vortex flow V of the processing object M.

One side of the guide 320 penetrates the center of the dart head 310. The guide 320 may be mounted through the center of the lower surface of the dart head 310. The guide 320 serves to facilitate the posture control of the dart head 310 by the impeller 330, and is inserted into the outlet 11 before the dart head 310 and guides the dart head 310 It also plays a role. The guide 320 may be located in front of the lower surface of the dart head 310. Here, the front means forward with respect to the discharge port 11, the side facing the discharge port 11 is the front, and the side facing the discharge port 11 is the rear. Looking at the dart head 310, the lower convex lower surface is the front, and the flat upper surface is the rear.

The guide 320 may be formed in size and weight to be positioned below the dart head 310 in the slag S or the processed object M. Here, the lower side means a low height. In addition, the guide 320 may be formed with an outer diameter smaller than the inner diameter of the outlet 11 so that it can be inserted into the outlet 11.

The guide 320 extends in one direction, for example, in the extension direction of the outlet 11, and includes refractory material, and the guide rod 321 and the guide rod 321 are inserted into the dart head 310 at one side. Penetrating and extending in one direction, protruding to one side of the guide rod 321 and to the outside of the dart head 310, in one direction to the other side of the core 323, the guide rod 321 comprising a metal or alloy material Mounted, the impeller 330 may include a mounting portion 322 that is detachably mounted, a stopper 324 coupled to a portion protruding from the dart head 310 of the core material 323.

The guide rod 321 may be in the form of a circular bar extending in one direction and having a circular cross section, and one side may be inserted into the insertion hole 312. Here, one side of the guide rod 321 is a portion that is inserted into the insertion hole 312, and refers to the upper end of the guide rod 321. Meanwhile, the other side of the guide rod 321 is a portion to which the impeller 330 is detached, and refers to the lower end of the guide rod 321.

The guide rod 321 is placed in the center of the vortex flow (V) when the impeller 330 rotates and serves to help control the posture in a manner aligned with the central axis of the outlet 11. The guide rod 321 may have an extended length H4 of several hundred mm to thousands of mm.

The core material 323 may include steel, and may also include various alloys. The lower portion of the core material 323 may be inserted into the guide rod 321. The upper portion of the core material 323 may protrude outward from the upper end of the guide rod 321, and may protrude outward from the upper surface of the dart head 310. Here, the above-mentioned outer side means the upper side.

Ring-shaped protrusions may be formed on the outer circumferential surface of the lower portion of the core material 323. The protruding length H5 of the core material 323 may be several hundred mm smaller than the extending length H4 of the guide rod 321. The core material 323 may penetrate the through-hole 313 and protrude upward from the upper surface of the dart head 310.

The stopper 324 may be in the form of a bolt or washer. The stopper 324 is contacted or separated from the upper surface of the dart head 310 and may be joined to a protruding portion of the core material 323 by, for example, welding. The core material 323 and the stopper 324 serve to bind the upper end of the guide rod 321 to the dart head 310.

The stopper 324 may include a heat-resistant metal material so as not to melt at the temperature of the processed material M, and is not particularly limited. At this time, the core material 323 may also include various alloys capable of maintaining the shape for a desired time at the temperature of the processed material M.

Of course, if the core material 323 and the stopper 324 maintain the shape in the processing object M while the dart head 310 is inserted into the outlet 11 and determine the length and thickness so as to sufficiently lengthen the melting time, It may include a metal material similar to the component of the treatment (M).

The protruding portion of the core material 323 is caught by a dart injector (not shown) to inject the outlet closing device 300 into the container 10.

The mounting portion 322 may have a hollow cylindrical shape, and threads may be formed on its inner circumferential surface. That is, the mounting portion 322 may include a female screw. The impeller 330 may be screwed to the mounting portion 322 to be detachably fixed.

The impeller 330 may be mounted on the other side of the guide 320, for example, at the bottom, so that the guide 320 can be axially rotated using the vortex flow V of the treatment M. The impeller 330 may be located in front of the guide 320 with respect to the outlet 11.

The outlet closing device 300 may be close to the outlet 11 in the order of the impeller 330, the guide 320, and the dart head 310 among the processed objects M.

The impeller 330 may be formed in size and weight so as to be positioned below the dart head 310 and the guide 320 within the processed object M. In addition, the impeller 330 may be formed with an outer diameter smaller than the inner diameter of the outlet 11 so that it can be inserted into the outlet 11.

That is, the impeller 330 rotates using the vortex flow V as described above, and the central axes of the dart head 310 and the guide 320 can be aligned with the central axis of the outlet 11, and the dart head ( 310) and the guide 320 can be moved to the outlet (11) side.

Thereafter, the impeller 330 is inserted into the outlet 11 prior to the dart head 310 and the guide 320, and is separated from the processing object M by the dart head 310 to stop rotation.

The impeller 330 may include at least one blade 332 to impart mobility toward the outlet 11 to the dart head 310 using axial rotation. Hereinafter, the impeller 330 will be described in detail.

The impeller 330 protrudes from the shaft 331 extending in one direction, the outer circumferential surface of the shaft 331, the blade 332 extending in one direction, and protrudes outward from one side of the shaft 331, the guide ( 320) may be mounted on the other side of the fastening portion 330.

The shaft 331 serves as a center of rotation of the impeller 330, and may be formed in a cylindrical shape. The outer diameter D1 of the shaft 331 may be the same as the outer diameter of the guide 320, and is not particularly limited. The shaft 331 may include a refractory material.

The shaft 331 may be detachably fastened through a fastening part 330 at a front end of the guide 320, such as a lower end. The outer circumferential surface of the shaft 331 includes a blade region in which the blade 332 is located and the rest of the regions, and the length H1 in one direction of the blade region may be greater than the length H2 in one direction of the remaining region. .

The blade area is referred to as the lower portion of the shaft 331. The length H1 of the plated area may be several tens of mm. The remaining area is referred to as the upper portion of the shaft 331. The length H2 of the remaining area may be several tens of millimeters.

The blade 332 may rotate the shaft 331 and the guide 320 fastened thereto using a vortex flow (V), and the outlet 11 to the shaft 331 and the guide 320 fastened thereto. It can impart head movement.

The blade 332 may protrude radially to the outer circumferential surface of the lower portion of the shaft 331, and in the exemplary embodiment, four blades 332 are illustrated, but the number may vary. The protruding length D2 of the blade 332 may be smaller than the outer diameter D1 of the shaft 331. The protruding length D2 of the blade 332 and the outer diameter D1 of the shaft 331 may be several tens of mm.

Meanwhile, the outer diameter of the impeller 330 is equal to a value obtained by adding the outer diameter D1 of the shaft 331 to twice the value of the protruding length D2 of the blade 332.

The blade 332 may have a larger protruding length as it is closer to the guide 320, and may have a smaller protruding length as it is farther from the guide 320. In addition, the protruding length of the blade 322 may gradually change from both ends in one direction, such as the upper end and the lower end, from the upper end of the shaft side toward the lower end of the other end.

That is, the blade 332 may have a retracted wing shape, and may be specifically formed into a triangular wing shape. By such a shape, the blade 332 may impart motility such as movement toward the outlet 11 to the shaft 331 and the guide 320 when rotating. The blade 332 may include a refractory material.

The fastening part 333 is mounted on the upper end of the shaft 331 and may protrude above the shaft 331. The fastening part 333 may be provided with a thread on the outer circumferential surface so that it can be detachably mounted on the mounting part 322 on the other side of the guide 320. That is, the fastening portion 333 may be in the form of a male screw. The impeller 330 may be screwed detachably to the guide 320 by the fastening part 333. On the other hand, the winding direction of the thread of the fastening portion 333 may be formed in a direction opposite to the rotation direction of the vortex flow (v).

The protruding length H3 of the fastening portion 333 may be smaller than the length H2 of the upper portion of the shaft 331. For example, the protruding length H3 of the fastening portion 333 may be several tens of mm.

6 is a view showing the outlet closing device according to a modification of the present invention, Figure 6 (a) and (b) is a cross-sectional view and a three-dimensional view of the outlet closing device, respectively.

The outlet closing device according to the modified example of the present invention may further include a rotating insulation part. The rotating insulation portion serves to insulate the rotation of the guide 320 and the dart head 310. The rotating insulation part is radially disposed inside the liner 341 and the dart head 310 provided between the guide 320 and the dart head 310 so that the guide 320 and the dart head 310 can be rotated with each other. Balance adjustment member 342 may be included.

The liner 341 may be attached or formed to surround the inner circumferential surfaces of the insertion hole 312 and the through hole 313 of the dart head 310. The liner 341 may include materials such as various heat-resistant alloys or barzalts, which may reduce friction with the guide 320 and may be delayed or not melted for a long time at the temperature of the treatment M, and the surface This can be formed smoothly. Here, a long time may mean a predetermined time during which the outlet closing device 300 can sufficiently perform closing of the outlet 11 in the container 10.

A plurality of balance adjusting members 342 is provided, and may include various refractory blocks or metal blocks having different densities from the dart head 310. The balance adjusting member 342 serves to increase the moment of inertia by increasing the weight of the position spaced apart from the central axis of the dart head 310. The material of the liner 341 is not particularly limited.

The stopper 324 may be spaced apart a predetermined distance (t) from the upper surface of the dart head 310. In this case, the liner 341 reduces friction with the guide 320 to suppress rotation of the guide 320 from being transmitted to the dart head 310, and at this time, the balance of the dart head 310 by the adjustment member 342 Rotation can be suppressed.

That is, the rotation of the impeller 330 by the blade 332 can be suppressed or prevented from being transmitted to the dart head 310, and accordingly, the dart head 310 is rotated while the rotation of the discharge port 11 is suppressed. It can be adhered smoothly to the top.

Hereinafter, a method for closing an outlet according to an embodiment of the present invention will be described. The method of closing the outlet according to the embodiment of the present invention, the process of discharging the processed object M through the outlet 11 formed on the outer circumferential surface of the container 10 while tilting the container 10 containing the treated object M, The process of injecting the outlet closing device 300 according to the embodiment of the present invention into the container 10, and controlling the posture and movement of the outlet closing device 300 by using the vortex flow V of the processed object M And a process of inserting the outlet closing device 300 into the outlet 11 so as to close the outlet 11.

First, the container 10 containing the processed material M is tilted and the processed material M is discharged through the outlet 11 formed on the outer circumferential surface of the container 10. Thereafter, when the level of the processed object M in the container 10 is reduced to a predetermined level, the outlet closing device 300 is introduced into the container 10. The manner of this may vary, and is not particularly limited.

For example, after the outlet closing device 300 is positioned above the outlet 11, the outlet closing device 300 may be introduced into the container 10 in a manner of dropping the outlet closing device 300 downward.

Here, the outlet closing device 300 is positioned above the outlet 11 using a dart feeder. After moving the outlet closing device 300 into the container 10, it can be performed by pushing the outlet closing device 300 into the slag S from the upper side of the outlet 11.

The outlet blocking device 300 may not penetrate the slag S in the container 10, or the posture may be closed. When the impeller 330 is exposed to the treatment M, the treatment M The impeller 330 is rotated by the vortex flow V to generate thrust force downward, so that the outlet closing device 300 is aligned with the outlet 11 and can be moved to the outlet 11. This process is referred to as a process of controlling the posture and motion of the outlet closing device 300 using the vortex flow of the processed material.

This process, while exposing the impeller 330 of the outlet closing device 300 to the vortex flow (V) of the treatment material (M), the shaft of the outlet closing device 300 using the blade 332 of the impeller 330 A series of processes of rotating, aligning the central axis of the outlet closing device 300 to the center of the outlet 11 using axial rotation, and moving the outlet closing device 300 to the outlet 11 side using axial rotation It can contain.

Here, exposing the impeller 330 to the vortex flow V of the treatment M may use the above-described dart injector or use the weight of the impeller 330.

By the above-described process, the impeller 330 is rotated using the vortex flow V to align the guide 320 and the dart head 310 with the central axis of the outlet 11 and impart mobility to the outlet 11 Can be sucked into the side.

At this time, since the dart head 310 is not lowered by using the own weight of the dart head 310 as in the prior art, even though the central axis of the outlet 11 is inclined with respect to the vertical direction, the outlet closing device by the inclination angle θ 300) can be aligned obliquely.

Thereafter, the outlet closing device 300 is inserted into the outlet 11 so that the outlet 11 can be closed, and the outlet 11 is closed. For example, the dart head 310 is pushed into the outlet 11 using the discharge pressure of the processed object M, and the upper end of the outlet 11 is closed using the outer circumferential surface. Thus, the discharge of the treated product M is ended.

The above embodiments of the present invention are for the purpose of describing the present invention and not for the limitation of the present invention. It should be noted that the configurations and methods disclosed in the above embodiments of the present invention may be modified in various forms by combining or crossing each other, and such modified examples may be viewed as the scope of the present invention. That is, the present invention will be implemented in a variety of different forms within the scope of the claims and equivalent technical spirit, and various embodiments are possible within the scope of the technical spirit of the present invention. Will be able to understand.

300: outlet closing device 310: dart head
320: guide 323: heartwood
330: impeller 332: blade

Claims (12)

As a discharge device for closing the discharge port is inserted into the container containing the processed material,
A dart head formed to close the outlet using an outer circumferential surface;
One side guides through the center of the dart head; And
Includes; an impeller mounted on the other side of the guide so as to rotate the guide shaft using the vortex flow of the treatment;
The impeller is an outlet closing device provided with at least one blade to impart mobility toward the outlet to the dart head using axial rotation. delete The method according to claim 1,
The impeller and the guide is an outlet closing device in which the size and weight are formed so as to be positioned below the dart head within the processed object. The method according to claim 1,
The impeller and the guide, the outlet closing device is formed with an outer diameter smaller than the inner diameter of the outlet so that it can be inserted into the outlet. The method according to claim 1,
The guide,
A guide rod extending in one direction and one side inserted into the dart head;
A core material extending in one direction through the center of the guide rod and protruding to one side of the guide rod and to the outside of the dart head;
A mounting portion mounted in one direction on the other side of the guide rod and the impeller is detachably mounted;
And a stopper coupled to a portion protruding from the dart head of the core material. The method according to claim 1,
The impeller,
A shaft extending in one direction;
Includes; protruding from one side of the shaft to the outside, mounted on the other side of the guide;
The blade is protruding from the outer peripheral surface of the shaft, the outlet closing device extending in one direction. The method according to claim 6,
The outer circumferential surface of the shaft includes a blade region in which the blade is located and the rest of the region except for this,
The outlet closing device in which the length in one direction of the blade area is greater than the length in one direction of the remaining area. The method according to claim 6,
The outlet length of the blade is smaller than the outer diameter of the shaft, and the closer to the guide, the larger the projection length, and the farther from the guide, the smaller the outlet length, the outlet closing device. The method according to claim 8,
The blade is an outlet closing device in which the protruding length gradually changes from both ends of the shaft toward the other end. The method according to claim 6,
The fastening portion is provided with a thread on the outer circumferential surface to be detachably mounted on the other side of the guide,
The closing direction of the thread is formed in a direction opposite to the direction of rotation of the vortex flow. Tilting the container containing the processed material and discharging the processed material through an outlet formed on an outer circumferential surface of the container;
Inputting a closing device into the container;
Controlling posture and motion of the outlet closing device using the vortex flow of the processed material;
Including the process of inserting the outlet closing device to the outlet so as to close the outlet;
The process of controlling the posture and movement,
Axially rotating the outlet closing device using a blade provided in the outlet closing device;
Aligning the central axis of the outlet closing device to the center of the outlet using the axial rotation;
And moving the outlet closing device in the direction of the outlet using the axial rotation. delete

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