KR-20260067246-A - electric furnace

KR20260067246AKR 20260067246 AKR20260067246 AKR 20260067246AKR-20260067246-A

Abstract

Start the electric furnace. An electric furnace according to one embodiment may include: a main body into which scrap is introduced into an internal space in which an arc heat source is generated by an electrode rod through an inlet formed on the side; a scrap conveying device installed outside the main body to convey the scrap in the direction of the inlet; a connecting trolley that travels along a rail via a driving wheel provided to move back and forth relative to the inlet, which controls the connection between the inlet and the scrap conveying device to allow or block the introduction of scrap into the inlet; and a foreign matter removal device provided on the connecting trolley to remove foreign matter on the rail when the connecting trolley travels.

Inventors

백찬준
정호현
손성제
이완근
신종훈
고명국

Assignees

주식회사 포스코

Dates

Publication Date: 20260512
Application Date: 20241105

Claims (11)

A main body into which scrap is fed into an internal space where an arc heat source is generated by an electrode rod through an input port formed on the side; A scrap conveying device installed on the outside of the main body to convey scrap in the direction of the input port; A connecting trolley that travels along a rail via a driving wheel equipped to allow or block the input of scrap into the input port and the scrap conveying device, and is capable of moving back and forth relative to the input port; and An electric furnace comprising: a foreign matter removal device provided on the connecting bogie to remove foreign matter on the rail during the operation of the connecting bogie.
In Article 1, The scrap conveying device described above includes a conveyor in which at least a portion is covered by a preheating hood, and An electric furnace further comprising a dust collector that collects waste gas generated in the internal space by passing it between the conveyor and the preheating hood.
In Article 1, The above foreign matter removal device is an electric furnace that includes a foreign matter removal unit that maintains contact with the rail and scrapes the rail surface when the connecting bogie travels.
In Paragraph 3, The above foreign matter removal unit is an electric furnace comprising at least one of a brush and a scraper.
In Paragraph 3, The above foreign matter removal unit is an electric furnace positioned in front of the driving wheel in the forward direction of the connecting carriage.
In Paragraph 5, The above foreign matter removal device is an electric furnace further comprising a cover portion that covers the front of the driving wheel in the forward direction of the connecting carriage.
In Paragraph 6, The above foreign matter removal unit is an electric furnace provided integrally with the above cover unit.
In Paragraph 6, The above connecting bogie is, A body in which the above-mentioned driving wheel is installed at the bottom; and A control plate provided on the upper part of the body to support the scrap, connected to the inlet when the body is advanced toward the inlet, and spaced apart from the inlet when the body is retracted from the inlet; The above cover portion is formed to extend from the front of the body in the forward direction to the front of the driving wheel, and The above foreign matter removal unit is an electric furnace provided at the end of the cover portion in the direction of extension of the cover portion.
In Paragraph 3, The above connecting bogie is, A body in which the above-mentioned driving wheel is installed at the bottom; and A control plate provided on the upper part of the body to support the scrap, connected to the inlet when the body is advanced toward the inlet, and spaced apart from the inlet when the body is retracted from the inlet; The above foreign matter removal unit is rotatably coupled to the front surface of the body in the forward direction of the body so as to be able to contact the rail or be spaced apart from the rail, and The above foreign matter removal device is an electric furnace further comprising an elastic member that elastically supports the foreign matter removal part in a downward direction.
In Article 1, The above foreign matter removal device includes a foreign matter removal unit that maintains contact with the rail when the connecting carriage moves forward and scrapes the rail surface. The above foreign matter removal unit is positioned in front of the driving wheel in the forward direction of the connecting carriage and is spaced apart from the rail when the connecting carriage moves backward.
In Article 1, The above connecting bogie is, A body in which the above-mentioned driving wheel is installed at the bottom; and A control plate provided on the upper part of the body to support the scrap, connected to the inlet when the body is advanced toward the inlet, and spaced apart from the inlet when the body is retracted from the inlet; The above foreign matter removal unit is coupled to the front of the body in a forward direction so as to be able to change position so as to be in contact with or separated from the rail, and The above foreign matter removal device further comprises an electric furnace including a posture switching drive unit that switches the posture of the foreign matter removal unit so that the foreign matter removal unit contacts the rail when the body moves forward, and the foreign matter removal unit is separated from the rail when the body moves backward.

Description

electric furnace The present disclosure relates to an electric furnace in which scrap is loaded through the side of the main body. Generally, in an electric furnace, an arc heat source generated through electrode rods is used to melt the scrap introduced into the internal space of the main body. In addition, some electric furnaces are designed so that scrap is fed into the internal space through an input port formed on the side of the main body. In this electric furnace, scrap is transported toward the input port by a scrap conveying device installed on the exterior of the main body, and a connecting trolley is installed between the scrap conveying device and the input port to allow or block the input of scrap relative to the input port. The connecting trolley is equipped with driving wheels and can move forward or backward relative to the input port while traveling along rails. When loading scrap, the connecting trolley advances toward the input port so that the scrap conveying device and the input port are connected, allowing the scrap conveyed by the scrap conveying device to be supplied to the main body through the input port. In addition, during the tilting operation to discharge the main body while the scrap loaded in the receiving space is melted, the connecting trolley can move backward in the opposite direction of the input port so that the connection between the scrap conveying device and the input port is cut off, thereby avoiding interference with the rotational movement of the main body. However, in an electric furnace of this type in which scrap is supplied to the side of the main body, when the connecting trolley moves backward or when the main body tilts, the scrap accumulated on the connecting trolley or the main body's input port may fall between the input port and the connecting trolley and be accumulated on the rail. Scrap piled on the rails threatens the driving safety of the connecting bogie by causing the driving wheels to get stuck or derail, which can lead to the shutdown of the electric furnace and result in reduced productivity. FIG. 1 is a configuration diagram of an electric furnace according to one embodiment, showing a state in which scrap is blocked from being fed into the internal space of the main body. FIG. 2 is a configuration diagram of an electric furnace according to one embodiment, showing the state in which scrap is fed into the internal space of the main body. FIG. 3 shows a front view of a connecting bogie in an electric furnace according to one embodiment. FIG. 4 shows a modified example of a foreign matter removal device in an electric furnace according to one embodiment. FIG. 5 illustrates another modified example of a foreign matter removal device in an electric furnace according to one embodiment, showing a state in which a connecting carriage is advancing toward the input port. FIG. 6 illustrates another modified example of a foreign matter removal device in an electric furnace according to one embodiment, showing a state in which a connecting trolley is moving backward in the opposite direction of the input opening. Throughout the specification, the same reference numerals refer to the same components. This specification does not describe all elements of the embodiments, and general content in the art to which the invention pertains or content that overlaps between embodiments is omitted. The terms 'part, module, component, block' used in the specification may be implemented in software or hardware, and depending on the embodiments, a plurality of 'parts, modules, components, blocks' may be implemented as a single component, or a single 'part, module, component, block' may include a plurality of components. Throughout the specification, when a part is described as being "connected" to another part, this includes not only cases where they are directly connected but also cases where they are indirectly connected, and indirect connections include connections made via a wireless communication network. Furthermore, when it is stated that a part "includes" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Throughout the specification, when it is stated that a component is located "on" another component, this includes not only cases where a component is in contact with another component, but also cases where another component exists between the two components. The terms first, second, etc. are used to distinguish one component from another, and the components are not limited by the aforementioned terms. Singular expressions include plural expressions unless there is an obvious exception in the context. In each step, identification codes are used for convenience of explanation and do not describe the order of the steps; the steps may be performed differently from the specified order unless the context clearly indicates the characteristic sequence. The term “and/or”