KR101461573B1 - Cover and covering device - Google Patents

Abstract

The injector includes a body portion forming a path through which the mold can move, and an induction portion contacting the mold and capable of guiding the mold downward. The mold includes a mold Wherein the molten steel is stored in the ladle and the cover is placed in an upper portion of the ladle and the molten steel stored in the ladle is charged into the cover, And a cover device having the cover.

Description

{Cover and covering device}

The present invention relates to a cover, and more particularly, to a cover capable of suppressing temperature and quality deterioration of a material to be processed which is introduced into a container to be processed and stored in the container, To a cover device.

The ladle used in the steel manufacturing process receives the refined molten steel in the steelmaking process, carries it to the continuous casting equipment, and supplies the molten steel to the tundish of the continuous casting equipment.

If the temperature of the molten steel is lowered during the transportation of the molten steel, nozzle clogging may occur in the continuous casting process of the continuous casting equipment which receives the molten steel. Also, when the temperature of the molten steel is lowered, the quality of the product of the continuous casting process produced by using the molten steel is lowered. Therefore, temperature control of molten steel is important for stability and quality improvement of continuous casting process. The temperature drop of the molten steel in the ladle is mostly generated through the top of the open ladle. In order to prevent temperature drop and oxidation of the molten steel prior to transferring the refined molten steel to the continuous casting process, the insulating material is generally put on the molten steel surface. Further, a heat insulating cover is mounted on the upper portion of the ladle.

However, the conventional method of keeping the molten steel using the insulating material and the insulating cover has the following problems. The insulating material can not be uniformly sprayed on the molten steel in the process of inserting the insulating material but can be charged in a part of the upper surface of the molten steel. As a result, the temperature of the molten steel is lowered and oxidized on the upper surface of the molten steel not covered with the insulating material. Therefore, the quality of molten steel is deteriorated and the slag exclusion process is complicated after the completion of the continuous casting operation due to the sintering of the slag. It is difficult to maintain the cleanliness of the rags. In addition, in the operation of detaching the cover to the ladle, the cover is mounted on the crane beam manually, and then the cover is manually mounted on the ladle by the operation of the crane operator. There is a limit to precise covering if now formed.

The present invention provides a cover and a cover device capable of suppressing or preventing heat radiation and oxidation of a material to be contained in a container.

The present invention provides a cover and a cover device capable of suppressing or preventing heat radiation and oxidation of an object to be treated and storing the object in the container so as to maintain the quality of the object to be transported.

The present invention provides a cover and a cover device that can simplify the covering process of the object container.

A cover according to an aspect of the present invention is a cover mounted on a container for containing a material to be processed, the cover having an area that covers the upper side of the container and containing a heat insulating material, Body; A weight adjusting unit provided at a lower portion of the cover body and adjusting the center of gravity; And a plurality of through holes passing through the cover body in a vertical direction.

The weight adjusting unit may be an auxiliary member protruding outward at the center of the lower surface of the cover body or a supporting member formed to increase in thickness from the edge of the cover body toward the center.

The auxiliary member may be mounted on the cover body as a separate member or may be integrally formed with the cover body.

The diameter of the cover body may be such that a spacing is formed between the inner wall of the container and the inner wall of the container.

A cover device according to an aspect of the present invention is a cover device for a container for containing an object to be processed, comprising: a cover which contains a heat insulating material to keep the object to be treated and is combustible by the ambient temperature of the object to be processed; And a cover dispenser which can be installed on the upper side of the container and includes a path opened in the up and down direction and moves the cover along the path.

The thickness of the cover can be controlled to a thickness at which the cover is seated on the exposed surface of the object to be burned and burning is completed when the object is transported.

The cover may be provided with a weight adjusting part for adjusting the center of gravity of the lower part, and the vertical center axis of the cover may be aligned with the central axis of the path.

The cover may include a plurality of through holes spaced outward from the center of the cover and passing through the cover in a vertical direction.

The injector includes: a body surrounding a side of the path; And a plurality of guide portions connected to the body portion and extending in the vertical direction.

The guide portion includes: a rotation axis extending in the vertical direction; A plurality of support plates spaced apart from each other along the longitudinal direction of the rotary shaft so as to cross the rotary shaft; And driving means connected to the support plate for rotating each of the support plates.

Wherein the support plate is rotatable inward and outward of the body portion and at least a part of the support plate is located inside the body portion so as to support the cover in contact or rotate to the outside of the body portion to release contact with the cover, As shown in Fig.

Wherein a center axis of the path and a center axis of the body portion are aligned with each other in a vertical center axis of the container, and the diameter of the cover is a distance from an inner wall of the container to a height at which the object is stored May be formed.

The container is a ladle used in a steel making process, and the material to be processed may include molten steel or molten steel stored in the ladle.

According to the embodiment of the present invention, a cover that can cover the exposed surface of the object to be exposed exposed through the upper part of the container can be obtained. The cover is superior in heat retention effect as compared with the conventional insulating material.

In addition, it is possible to obtain a cover that is gradually burned on the exposed surface of the object to be processed and is easily removed by combustion upon completion of transportation of the object to be treated. Accordingly, the removal process of the cover after the completion of the transportation of the object to be processed is omitted, and the collection time of the container can be shortened.

According to the embodiment of the present invention, such a cover is provided inside, and a cover device which is provided on the upper side of various containers and can mount the cover on the upper part of the container is formed, so that the container can be covered quickly in the process of covering the container. From this, it is possible to simplify the covering process of the container, thereby shortening the processing time.

For example, when applied to a ladle used for conveying molten steel or molten steel in a steel manufacturing process, the cover device is located on the upper side of the ladle and the cover is guided downward from the inside of the cover device and rests on the upper side of the ladle. The cover can effectively suppress or prevent the heat radiation and oxidation generated on the upper surface of the molten steel and can maintain the quality of the molten steel in the ladle when the molten steel stored in the ladle is completed in the continuous casting process. In addition, it is possible to simplify the process by shortening the process of inserting the cover provided by the present invention into the container cover process, which is conventionally performed by inserting a heat insulating material and attaching a cover. This can reduce the processing time and cost.

Further, the cover is burnt within the ladle for a time required by the operator, and the ladle is completed to be burnt when the molten steel is completely transported and can be removed. Thus, the ladle collection time can be shortened and the ladle warmth can be improved.

1 is a schematic view of a cover according to an embodiment of the present invention;
2 is a schematic view of a cover device according to an embodiment of the present invention;
3 is a schematic view showing a driving state of a cover device according to an embodiment of the present invention;
FIG. 4 is a state diagram of a material container to which a cover device according to an embodiment of the present invention is applied. FIG.

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 described below, but may be embodied in various forms. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. Like reference numerals refer to like elements throughout.

FIG. 1 is a schematic view of a cover according to an embodiment of the present invention, and FIG. 2 is a schematic view of a cover apparatus according to an embodiment of the present invention. 1 (b) is a side view showing a cross-section of a cover according to a modification of the present invention, and FIG. 1 (c) is a side view showing a cross- Is a plan view showing an upper surface of a cover according to an embodiment of the present invention.

1 and 2, a cover 100 according to an embodiment of the present invention includes a cover body 110 having an area capable of covering an upper side of a container 10 on which the cover 100 is mounted, A weight adjusting unit 120 provided at a lower portion of the cover body 110 for adjusting the center of gravity of the cover body 110 and a plurality of through holes 130 penetrating the cover body 110 in the vertical direction. In addition, the cover body 110 contains a heat insulating material and is combustible by the ambient temperature of the container 10. [

Here, the container 10 on which the cover 100 is mounted is a container 10 for receiving the object 20, and in this embodiment, is a general ladle for storing molten iron or molten steel used in a steel manufacturing process . However, the cover 100 is not limited thereto, and may be mounted on various containers 10 capable of receiving the object 20 to be processed. Generally, the container 10 has, for example, an upper portion opened to the upper side, a cylindrical side surface extending in the up-and-down direction, and a lower surface connected to the lower end of the side surface, . In this embodiment, molten iron or molten steel is stored in the formed space. However, the present invention is not limited to this, and various objects to be processed can be stored in the container 10 on which the cover 100 is mounted.

The shape of the cover body 110 is not particularly limited and has a shape that is easy to be mounted on the container 10 to which the present embodiment is applied. For example, the cover body 100 may have the shape of a circular plate having a predetermined length extending outward from the central axis in the up-and-down direction and having an end. The cover body 110 falls down from the upper side of the container 10 toward the container 10 and seats on the exposed surface of the object 20 exposed through the open upper portion of the container 10 and exposed to the outside air, Thus, the cover 100 can be mounted on the container 10 to prevent or suppress temperature drop and oxidation of the object 20 to be processed. To this end, the cover body 110 can be inserted into the interior of the container 10 through the upper part of the opened container 10 and covers the exposed object 20 when it is placed on the exposed surface of the object 20 exposed to the outside air It is good to have an area that can be. In this embodiment, the diameter of the inside of the open upper part of the container 10, for example, the ladle is 4360 mm, and the diameter of the inside of the ladle in which the exposed surface of the material to be treated 20, e.g., molten steel, is located is about 4320 mm. Correspondingly, the cover body 110 can be seated on the exposed surface of the object 20 without being caught in the container 10 when the container body 10 is dropped into the container 10, Quot;) < / RTI > Thus, the end of the cover body 110 can form a gap of about 10 mm from the inner wall of the container 10 at a height at which the object 20 is stored. That is, the diameter of the cover body 110 is set such that the distance between the inner wall of the container 10 at the height at which the cover 100 is mounted and the end of the cover body 110 is in a range of 0 mm to 10 mm .

The cover 100 includes a general insulating material added to the upper part of the molten steel for the purpose of keeping the object 20, for example, molten steel therein, and is formed to be burnable and removable at the ambient temperature of the container 10. Therefore, the cover 100 is seated on the exposed surface of the object 20 to start the combustion, and when the object 20 is completely conveyed, the burned object is removed from the object to be treated 20, Can be removed from the vessel 10 with the resulting slag. For this, the cover body 110 may have a predetermined thickness to control the burning completion time required by the operator. In this embodiment, the cover body 110 is formed to have a thickness of 100 mm to 150 mm so as to maintain the shape and the function of the cover 100 during the combustion completion time required by the operator.

The weight adjusting unit 120 is an auxiliary member formed at a lower portion of the cover 100 to control the falling direction of the cover 100 when the cover 100 falls. The weight adjusting unit 120 may be formed to increase the thickness of the cover body 110 from the end of the cover body 110 toward the center of the cover body 110 or to be mounted on the center of the cover body 110, 1 (b)). At this time, the auxiliary member may be separately mounted on the cover body 110 or integrally with the cover body 110. The cover 100 is formed at the center of the exposed surface of the workpiece 20 at the correct position required by the operator when the container 100 is dropped onto the open top of the container 10 by the weight adjusting unit 120, Can be dropped so as to be aligned. The cover 100 is seated at an accurate position on the exposed surface of the object 20 to prevent the container 10 from colliding with the container 10 during dropping and prevents the container 10 and the cover 100 from being damaged due to collision can do.

The cover 100 formed as described above is contained in the component thereof with a heat insulating material capable of keeping the object 20, for example, molten steel therein. When the cover 100 is formed, a general insulating material is used as a thermal insulating material, and a process of adding a binder such as an organic compound, which serves to granulate the thermal insulating material powder in the process of forming the cover 100, is removed. The heat insulating material powder is injected into the form of sludge into a mold having a predetermined form that can be formed. Thereafter, the moisture of the heat-retaining material powder is removed using a dewatering equipment or a vacuum equipment, and heat is applied using an oven to form the shape of the cover 100.

The size and shape of the through hole 130 are not particularly limited. The through hole 130 may have a size and shape that can easily prevent or suppress the air resistance generated in the lower portion of the cover 100 when the cover 100 falls. The through hole 130 can apply an external force to the cover body 110 by the action of outside air passing through the through hole 130 when the through hole 130 is dropped. In order to prevent this, the through holes 130 are spaced apart from the center axis of the cover body 110 by a predetermined distance, and a plurality of through holes 130 are formed symmetrically with respect to the center axis. In this embodiment, through holes are formed in four directions. (See Fig. 1 (c)).

2, a cover device 1000 having a cover 100 can be installed on the upper side of the container 100, the container 10, for example, ladies that can insulate the article 20 from heat, And a dispenser 200 having a path inside the cover 100 and capable of moving the cover 100 along the path. The cover 100 is positioned so that the central axis of the cover 100 is aligned with the central axis of the path formed in the injector 200. The injector 200 includes a body 210 surrounding the sides of the path, and a plurality of guide portions 220 connected to the body 210 and extending in the vertical direction.

The body portion 210 is installed toward the container 10 from above the container 10. The body portion 210 has a shape and size that facilitates formation of a path through which the cover 100 moves. For example, in the present embodiment, the body 210 includes upper and lower rings 211 and 212 opened upward and downward, respectively, and a support 213 for connecting the rings 211 and 212 to the side, At least one in the direction intersecting each of the rings 211 and 212 is provided. The inner diameters of the respective rings 211 and 212 are formed corresponding to the diameter of the cover 100. The cover 100 moves from the upper side of the upper ring 211 of the body 210 to the inside of the body 210 and moves to the lower side of the body along with the induction of the induction 220, The cover 100 can be discharged to the outside of the body 210 through the lower side of the lower ring 212 of the body 210. [ At least one side of each of the rings 211 and 212 of the body 210 is connected to an induction unit 220 to be described later to support the induction unit 220.

The induction unit 220 includes a plurality of rotation shafts 221 extending in the up and down direction and a plurality of support plates 222 and support plates 222 spaced apart from each other along the longitudinal direction of the rotation shaft 221 crossing the rotation shafts 221 And drive means (223) connected to rotate each of the support plates (222). The rotation axis 221 is located on the side surface of the body portion 210 and is formed at least in three directions spaced about the central axis of the path. The formed rotary shaft 221 forms the same angle as each adjacent rotary shaft 221. Therefore, the support plate 222 mounted on the rotary shaft 221 is easy to support the cover 100 by contacting the cover 100 moving along the path at three positions. The plurality of support plates 222 are mounted in a direction crossing the rotation shaft 221. The support plate 222 is a plate having a predetermined area of, for example, an eccentric cam shape in which one side facing the body 210 is protruded. The support plate 222 is rotatable around the rotation axis and rotates inward and outward of the body 210. At least a part of the support plate 222 is positioned inside the body 210 so that one side of the support plate 222 contacts the cover 100 and the cover 100 supports the cover 100, It is loadable. The contact between the cover 100 and the support plate 222 is released when the support plate 222 contacting the cover 100 is rotated to the outside of the body 210 around the rotation axis 221, As shown in Fig. The cover 100 falling downward comes into contact with another lower support plate 222 and the support plate 222 rotates again so that the cover 100 can be guided sequentially from the upper side to the lower side of the rotary shaft 221 have. The rotation of the support plate 222 is performed simultaneously by the support plates 222 mounted on the respective rotation shafts 221. Thus, the cover 100 can simultaneously contact at least three support plates 222, balance it easily, and move downward easily. The driving of the supporting plate 222 is generated by the driving means 223 connected to the supporting plate 222. The driving means 223 may be a combination of a general rotary motor (not shown) and a gear unit (not shown), for example. A gear unit (not shown) connected to at least one of both ends of the rotation shaft 221 is mounted on the inner side of the rotation shaft 221 along the rotation shaft 221 Or from the outside to the respective support plates 222 to drive the support plates 222, respectively. In describing an embodiment of the present invention, it is not necessary to limit the drive means 223 to a specific configuration in the present invention, and conventional drive means (for example, 223) may be used therefor. Therefore, in order not to obscure the gist of the present invention, the description of the structure of the driving means 223 is omitted. The guiding portion 220 uses a coupling method suitable for the configuration of the injector 200 during the mechanical coupling method including contacting the body portion 210 with at least a part of the rotary shaft 221 or the driving means 223, Respectively.

FIG. 3 is a front view showing a driving state of a cover device according to an embodiment of the present invention, FIG. 4 is a state diagram showing a cover process of a container to be processed according to an embodiment of the present invention, to be. 3 (a) is a front view showing the first driving state of the cover device, FIG. 3 (b) is a front view showing a second driving state of the cover device, and FIG. 3 Fig. 3 is a front view showing the third driving state.

3 and 4, the driving of the cover apparatus 1000 including the cover 100 and the dispenser 200 according to the embodiment of the present invention will be described.

The cover 100 is located below the cover device 1000 in which the cover 100 is placed for the cover process of the vessel 10 (e.g., ladle of molten steel), such as ladle. At this time, the container 10 is positioned such that the vertical axis of the container 10 is aligned with the central axis of the cover device 1000. The support plate 222a mounted on each rotary shaft 221 rotates to the outside of the body part 210. As shown in FIG. The cover 100a located at the lower portion of the cover apparatus 1000 is released from contact with the support plate 222a and falls due to its own weight so that the object 20 Lt; / RTI > The cover 100a is aligned with the central axis of the container 10 and the exposed upper portion of the object 20 is exposed to the outside through the through holes 130. [ Can be seated on the surface. Subsequently, the support plate 222a in the rotated state returns toward the body portion 210. As shown in Fig. The support plate 222b located on the upper side of the support plate 222a which is continuously returned is rotated to the outside of the body portion 210. [ (See FIG. 3 (b)). The cover 100b, which has been held in contact with the support plate 222b, is guided downward and is loaded on the support plate 222a. This process is sequentially performed from the lower part to the upper part of the dispenser 200 and the cover 100e supplied from the outside of the cover device 1000 is loaded on the support plate 222d positioned on the upper part of the dispenser 200, The apparatus 1000 completes the cover mounting process once. (See FIG. 3 (c)). As described above, while the cover apparatus 1000 is repeatedly performed once, a new container 10 is placed at the bottom of the cover apparatus 1000, And the cover mounting process of the cover apparatus 1000 can be repeated. When the cover 100 is mounted on the container 10 in this way, the container 10 can carry the object 20 to the subsequent continuous casting process and the steel making process.

Although the above embodiment of the present invention is exemplified in the case of rabbits, the present invention can also be applied to a cover process of a container for carrying various other objects to be processed. It should be noted, however, that the above-described embodiments of the present invention are for the purpose of explanation and not for the purpose of limitation. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: cover 120: weight adjusting section
130: Through hole 200: Feeder
220: guide part 1000: cover device

Claims (13)

A cover which is seated on an exposed surface of a material to be treated contained in the container,
A cover body having an area covering the upper side of the container, the cover body containing a heat insulating material and capable of being burned by the ambient temperature of the container;
A weight adjusting unit provided at a lower portion of the cover body to adjust a center of gravity of the cover body so as to control a falling direction of the cover body when the cover body falls; And
And a plurality of through holes penetrating the cover body in a vertical direction,
Wherein the combustion is started by the ambient temperature of the vessel and combustion is completed when the transportation of the object to be treated is completed and removed from the vessel together with the slag.
The method according to claim 1,
Wherein the weight adjusting unit is an auxiliary member formed to protrude outward at a central portion of a lower surface of the cover body or an auxiliary member formed to increase in thickness from the edge of the cover body toward the center.
The method of claim 2,
Wherein the auxiliary member is mounted on the cover body as a separate member or integrally formed with the cover body.
The method according to claim 1,
Wherein a diameter of the cover body is such that a spacing is formed between the inner side wall of the container and the cover body.
A cover apparatus for a container for containing a material to be processed,
The object to be treated is placed on the exposed surface of the object to be treated accommodated in the container so that the combustion starts by the ambient temperature of the container, A cover in which combustion is completed upon completion of transportation of the object to be processed and removed from the container together with the slag;
And a cover dispenser provided on the upper side of the container, the cover dispenser having a path opened in an up-and-down direction and capable of moving the cover along the path,
And a weight adjusting unit capable of adjusting a center of gravity of the cover so as to control a falling direction of the cover when the cover falls.
The method of claim 5,
Wherein the thickness of the cover is controlled to a thickness at which the cover is seated on the exposed surface of the object to be burned and burning is completed when the conveyance of the object to be processed is completed. The method of claim 5,
Wherein the cover is installed such that the vertical center axis of the cover is aligned with the central axis of the path.
The method according to any one of claims 5 to 7,
Wherein the cover has a plurality of through holes spaced outward from the center of the cover and passing through the cover in a vertical direction.
The method according to any one of claims 5 to 7,
Wherein,
A body surrounding the side of the path; And
And a plurality of guide portions connected to the body portion and extending in the vertical direction.
The method of claim 9,
The guide portion
A rotating shaft extending in a vertical direction;
A plurality of support plates spaced apart from each other along the longitudinal direction of the rotary shaft so as to cross the rotary shaft;
And driving means connected to the support plate to rotate each of the support plates.
The method of claim 10,
The support plate
And is rotatable on the inside and outside of the body portion,
At least a part of which is located inside the body portion,
And the cover is rotated to the outside of the body portion to release the contact with the cover and drop the cover downward.
The method of claim 9,
A center axis of the path is aligned with a central axis of the body portion in a vertical center axis of the container,
Wherein the diameter of the cover is adjusted to a size such that a spacing is formed between the height of the object to be processed and the inner wall of the container.
The method according to any one of claims 5 to 7,
The container is a ladle used in a steel manufacturing process,
Wherein the object to be processed comprises a molten steel or molten steel stored in the ladle.

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