KR100851873B1 - Equipments for steel manufacture with device for intercepting inflow of external air - Google Patents

Abstract

In the steelmaking process, in order to prevent external air from flowing into the in-cross in which the electric furnace is installed and reducing dust collection efficiency in the in-cross, an electric furnace is installed in the in-cross in which the inner space is formed, and the ink is in front of the in-cross. A door for opening or closing the rose is installed, and a tapping pit formed while forming a space at a position lower than this bottom surface is provided on the bottom surface of the front of the door where the bogie rail is installed, and on the door according to the opening / closing state of the door. Blocking or opening the space formed by the tapping pit is provided with a blocking device to prevent the outside air flows into the in the closed state.

Furnace, Block, Spring, Rotating Rod, Clamp, Hanging Plate

Description

Steelmaking facility with external air inlet blocking device {EQUIPMENTS FOR STEEL MANUFACTURE WITH DEVICE FOR INTERCEPTING INFLOW OF EXTERNAL AIR}

1 is a front sectional view showing a steel making facility according to an embodiment of the present invention.

2 is a cross-sectional view of the external air inlet blocking device according to the embodiment of the present invention.

3 is a partial perspective view illustrating the configuration of an external air inflow blocking device according to an embodiment of the present invention.

4 is a partial perspective view illustrating another configuration of the external air inflow blocking device according to the embodiment of the present invention.

5 and 6 are cross-sectional views for explaining the operation of the external air inlet blocking device according to an embodiment of the present invention.

7 is a schematic diagram illustrating a general steelmaking facility.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel making facility, and more particularly, to a steel making facility having a device for blocking external air from entering into the steel making facility during the steel making process.                         

In general, during the steelmaking process, the wastewater that has undergone the iron making process is transferred to the steelmaking process to lower the carbon content or remove impurities. Such a steelmaking process is usually performed in an electric furnace (converter), which is installed in an enclosed space, that is, an enclosure, to prevent dust and noise generated during the steelmaking process from leaking out of the workplace.

FIG. 7 is a view schematically showing a general steelmaking facility constituting the steelmaking process. As shown in the drawing, the steelmaking facility installs an electric furnace 3 into an incross 1 having an internal space of a predetermined size. In addition, the front surface of the inclose (1) is provided with a door (5) that opens and closes according to the left and right slides.

In the door 5, the molten steel that has undergone the iron making process is transferred to the electric furnace 3 by topedoca (not shown), or the molten steel that has undergone the steelmaking process is tapped out of the electric furnace 3 and melted. In the case of being transferred to a bogie (not shown), the inclose 1 is opened by maintaining the open state, and when the steelmaking process is performed in the electric furnace 3, the closed state is maintained. ) Is closed.

The electric furnace 3 is installed on three electrodes 7 for the practical operation of the electric furnace 3, and furthermore, the dust generated in the incense 1 during the steelmaking process is collected and the incense 1 An elbow 11 is installed to allow the dust to flow out of the in cloth 1 through the dust collecting duct 9 installed inside and outside of the cloth.

On the other hand, the front of the door (1) is provided with a trolley rail (13) for the movement of the molten trolley, the electric rail (1) on the bottom surface 17, the trolley rail 13 is disposed When tapping from the molten bogie from the molten iron, a tapping pit 19 is formed to allow molten steel to flow into the molten bogie.

That is, in the steelmaking facility described above, the molten steel is prevented from leaking to the outside of the inclose 1 during the tapping process of the molten steel through the tapping pit 19.

However, when the steelmaking process is performed using the steelmaking facility described above, the tapping pit 19 may have advantages such as safety accident prevention, while external air is introduced into the incross 1. There is a disadvantage in that the process atmosphere is lowered by inhibiting the dust collection efficiency in the in-cross (1).

In this case, since the tapping pit 17 is formed below the bottom surface 17, that is, lower than the ground, the door 5 is closed even if the door 5 is kept closed. Through the tapping pit 17, outside air is easily introduced into the inclose 1 and occurs.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a steelmaking facility that can effectively block the outside air flow into the in-cross in which the electric furnace is installed during the steelmaking process.

Accordingly, the present invention to realize the above object,

An electric furnace is installed in an inclosed interior space, a door for opening or closing the inclosed front surface is provided, and a lower position than this bottom surface is provided on the bottom surface of the front of the door where the bogie rail is installed. In the steelmaking facility which installs tapping pit formed while forming a space,

Steelmaking facilities are provided on the door to block or open the space formed by the tapping pit in accordance with the opening and closing state of the door to prevent the outside air flow into the in-close when the door is closed To provide.

In the steelmaking facility, the blocking device,

A barrier for lifting and lowering the space of the tapping pit by lifting and lowering according to the opening and closing state of the door and a barrier for lifting and supplying an energy source for the lifting movement of the barrier in connection with the opening and closing state of the door. It is preferable to include a drive unit.

In the steelmaking facility, the barrier film lift drive unit,

The operation bar is attached to the pressing plate at one end and is disposed on the mounting frame installed in the door, and receives the elastic force applied by the shock absorbing spring to elastically move horizontally, and the housing having one side connected to the operation bar and the other side having a predetermined internal space. As long as the connecting rod is connected to the operating bar perpendicularly to the operation bar and one end of the spring is tapered and the spring is disposed between the two ends of the spring, the spring is moved horizontally in and out of the housing under the elastic force of the spring. A pair of clamps, a pair of cylinders fixed to the mounting frame with the connecting rod interposed therebetween, a spring connected to each of the cylinders to apply elastic force to the cylinders, and a surface contacting the latches While being installed at one end of each cylinder of the cylinder according to the horizontal movement state of the operation bar And a retaining plate that maintains a locking state, a rotation rod forming a clearance hole on a center thereof, and a locking rod coupled to both ends thereof, and fixed to the door while being inserted into the clearance hole to move along the interior of the clearance hole. It is preferable that the rod comprises a fixing pin and a wire connected to one side of the rotating rod and the blocking film to the seesaw movement.

In addition, the steelmaking facility is provided by connecting the wire to a plurality of rollers installed at a predetermined position on the door, and at the middle portion of the barrier film is provided with a wrinkle membrane having a buffer spring installed therein, and above the barrier film. The end is preferably formed by arranging an arm that is connected to the connecting rod is installed on the upper end of the barrier film and the other end is shared and connected to the connecting ring connected to the wire.

Hereinafter, with reference to the accompanying drawings, preferred embodiments for clarifying the present invention will be described in detail.

1 is a view schematically showing a steelmaking facility according to an embodiment of the present invention, as shown, the steelmaking facility is also based on a conventional steelmaking facility configuration, which firstly has an internal space (20a) Includes the cross 20 is formed to a predetermined size. An electric furnace 22 is installed inside the incross 20 to substantially make the steelmaking process. In the front surface of the incross 20, the incross 20 is opened or closed according to the steelmaking process. A pair of doors 24 are installed to keep the. Here, the door 24 is connected to a driving source (not shown), the sprocket 26 and the chain 28, etc. to open or close while sliding left and right, thereby opening / closing the inclose 20.

In addition, the bottom surface 30 of the front side of the door 24 for the operation of the molten bogie (not shown) for driving the molten steel from the electric furnace 22 to the next step (for example) 32) are disposed at predetermined intervals, and furthermore, the bottom surface 30 is provided with a molten steel spill prevention tap 34 formed while forming a space having a predetermined size at a position lower than the bottom surface.

In the drawing, reference numeral 36 denotes three rod electrodes installed on the upper side of the furnace 22 for the practical operation of the furnace 22, and reference numerals 38 and 40 refer to dust collected during the steelmaking process. Points to elbows and dust collection ducts to be drawn out of the enclose (20).

In addition to the above-described configuration, the steelmaking facility of the present invention blocks the external air from entering the inclose 20 through the tapping pit 34 on the door 24 during the steelmaking process. The device is further installed.

In the present invention, the blocking device is interlocked with the movement of the door 24 according to the opening / closing state of the door 24 to block or open the space of the tapping pit 34 so that the outside air is inside the inclose 20. It will be prevented to flow into the bar, its configuration is as follows.

2, 3 and 4 are diagrams for explaining the configuration of the blocking device, and for reference, the blocking device may be symmetrical to the door 24 while having the same configuration, as shown in FIG. 1. Since they are installed and disposed to face each other, in the drawings of FIGS. 2, 3, and 4, only the blocking device installed on one side door 24 is illustrated.

First, the blocking device includes a blocking film 42 for lifting and lowering the space of the tapping pit 34 by lifting and lowering according to the opening / closing state of the door 24.

In the present embodiment, as the barrier film 42 is further understood through FIG. 4, the barrier film 42 is formed by arranging the wrinkle film 46 having a plurality of buffer springs 44 installed therein, but the configuration thereof is necessarily It is not limited to this.

In addition, the blockage device includes a barrier lift driver for supplying an energy source for the lifting motion of the barrier 42 to the barrier 42, and the barrier lift driver also opens and closes the door 24. It works in conjunction with the state.

Looking at the configuration of the barrier film lifting drive unit according to the present embodiment in turn, this includes an operation bar 50 disposed in the mounting frame 48 installed in the door 24 first. The actuating bar 50 attaches the pressing plate 52 to one end thereof, and is disposed at a position close to the pressing plate 52 and interposed in the buffer spring 54 provided on the mounting frame 48 so that the buffer spring ( Under the spring force of 54, elastically horizontal movement is achieved.

The operating bar 50 is coupled to the connecting table 56 disposed in a vertical state with respect to the operating bar 50, one side of the connecting table 56 is provided with a housing 58 having a predetermined internal space. Here, a pair of catches 62 are disposed inside the housing 58 with the springs 60 therebetween, and both ends of the catches 62 are tapered at one end (side disposed outside the housing). It has a true shape and is horizontally moved in and out of the housing 58 under the force of the spring 60.

In addition, the mounting frame 48 is fixedly provided with a pair of cylinders 64 disposed on both sides of the connecting table 56 with the connecting table 56 therebetween. On the outer circumference of the cylinder 64, a spring 68 coupled to the spring fixing plate 66 fixed to the mounting frame 48 to apply an elastic force to the cylinder 64 is arranged, and furthermore, At one end, the stopping plate 70 is attached.

In this case, as shown in the drawing, the locking plate 70 is tapered to form all the other surfaces, including a surface contacting the latch 62, and according to the horizontal movement state of the operation bar 50, the latch 62 and the locked state or released state.

As shown in FIG. 3, both of the locking plates 70 are coupled to both ends of the rotation rod 72 forming the clearance hole 72a on the center thereof, and the rotation rod 72 is connected to the clearance hole. It is inserted into the 72a by the coupling force of the fixing pin (74) fixed on the door 24 to the seesaw movement around the fixing pin (74) in the coupled state on the door (24). During the seesaw movement of the rotary rod 74, the fixing pin 74 flows along the inside of the clearance hole 72a and temporarily stops while the rotary rod 74 is rotated clockwise or counterclockwise. It will play a role.

In addition, a wire 76 leading to the blocking film 42 is coupled to one side of the rotary rod 74 while being coupled to a roller 78 fixedly installed on the door 24.

On the other hand, in the present embodiment, one end of the blocking film 42 is connected to the connecting table 80 provided on both sides of the upper surface of the blocking film 42 and the other end is shared and connected to the connecting ring 82 A pair of arms 84 are disposed, the wire 78 is connected to the connecting ring 82 is installed.

Accordingly, the steelmaking facility is to block the outside air inflow as follows according to the action of the blocking device configured as described above. For reference, since the blocking device achieves the same function in both the doors 24, the following description will be given to the operation of the blocking device as a reference of the one side door 24.

First, when the steelmaking process is performed in the steelmaking facility, the door 24 is kept closed as shown in FIG. 5 to block foreign substances such as dust from the inside of the enclosed 20 to the steelmaking workshop. In this way, when the door 24 is closed, the pressing plates 52 are brought into contact with each other. At this time, the operation bar 50 overcomes the force of the spring 54 and maintains the state moved to the left based on the drawing. Of the latches 62, one side (left side of the drawing reference) latch 62 is engaged with the one side (left side of the drawing reference) latching plate 7 of the latching plate 70 to maintain a locked state. . In this locked state, the cylinder 64 and the spring 68 on the left side are moved upward in accordance with the rotation (clockwise) state of the rotating rod 72 to maintain the contracted state. At this time, the rotary rod 72 is stopped in a stable state by the fixing pin 74 is transported to one side end of the clearance groove (72a) in close contact with it.

At the same time, the blocking film 42 is lowered into the space of the tapping pit 34 and disposed in the space to block the space. Thus, the space of the tapping pit 34 is formed by the blocking film 42. When blocked, it is difficult for outside air to flow through the tapping pit 34 from the outside of the enclose 20. Furthermore, when the blocking film 42 is disposed in the space of the tapping pit 34, the blocking film 42 may be in close contact with the surface forming the space of the tapping pit 34 under the force of the buffer spring 44. Therefore, it is possible to block the outside air without causing a predetermined gap.

As a result, the steelmaking facility of the present invention can perform the steelmaking step in an optimum atmosphere without introducing external air into the inclose 20.

On the other hand, when molten steel is tapped from the electric furnace 22 or the door 24 is opened as shown in FIG. 6 to supply molten iron to the electric furnace 22, the fraud blocking film 42 is It is raised from the space of the tapping pit 34 so that the door 24 can be opened smoothly without interference by the blocking film 42, which is achieved through the following process.

That is, when the door 24 starts to open, the operating bar 50 is horizontally moved by the spring 54 while being released by the pressing force applied to the pressing plate 52, and thus the latch 62 is closed. And the locked state of the locking plate 70 is released. At this time, the spring 68 on the side where the locked state is released is relaxed, and by this force, the rotary rod 72 is interlocked and rotated clockwise. In this process, the latch 62 on the right side of the drawing slides on the pressing plate 70 on the right side on the basis of the drawing, and is disposed below the bar. Therefore, the spring 68 on the right side of the drawing on the basis of the drawing rotates the rod 72. As it is contracted by, it rises up. At this time, the blocking film 42 is pulled up by the wire 76 is pulled in accordance with the rotation of the rotary rod 72, whereby the blocking film 42 is separated from the tapping pit 34 Thus, the door 24 can be slid open without interference by the blocking film 42.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. It goes without saying that it belongs to the scope of the present invention.

Steelmaking facilities in the present invention as described above, can effectively block the outside air that can be introduced into the interior through the tapping pit, the external air is introduced into the interior of the in-cross during the steelmaking process, Work efficiency can be improved by preventing the dust collection efficiency from falling.

In addition, the steelmaking facility of the present invention has the advantage of preventing dust and noise generated in the inflow through the tapping pit to the outside of the facility to improve the atmosphere of the workplace by preventing environmental pollution and noise reduction.

Claims (4)

An electric furnace is installed in an inclosed interior space, and a door for opening or closing the inclosed front is installed in the front surface of the inclosed space, and the space is lower than the bottom surface on the bottom surface of the front of the door where the bogie rail is installed. In the steelmaking facility which installs the tapping pit formed while forming, A blocking film for lifting and lowering the space of the tapping pit by lifting and lowering according to the opening and closing state of the door; The barrier film lift driving unit connected to the barrier film and connected to the opening / closing state of the door to supply an energy source for the movement of the barrier film. By mounting a blocking device comprising a Steelmaking having an external air inlet blocking device for blocking or opening the space formed by the tapping pit according to the opening / closing state of the door on the door to prevent external air from entering the enclosure when the door is closed equipment. delete The method of claim 1, The barrier film lift drive unit, The operation bar is attached to the pressing plate at one end and is disposed on the mounting frame installed in the door, and receives the elastic force applied by the shock absorbing spring to elastically move horizontally, and the housing having one side connected to the operation bar and the other side having a predetermined internal space. As long as the connecting rod is connected to the operating bar perpendicularly to the operation bar and one end of the spring is tapered and the spring is disposed between the two ends of the spring, the spring is moved horizontally in and out of the housing under the elastic force of the spring. The pair of latches, a pair of cylinders fixed to the mounting frame with the connecting rod interposed therebetween, a spring connected to each of the cylinders to apply elastic force to the cylinders, and a surface contacting the latches, The latch is installed at one end of each cylinder according to the horizontal movement state of the operation bar A locking plate to maintain a locked state, a rotation rod forming a clearance hole on a center thereof, and a locking rod coupled to both ends thereof, and fixed to the door while being inserted into the clearance hole to move along the interior of the clearance hole. Steelmaking equipment characterized in that it comprises a fixing pin and a wire connected to one side of the rotary rod and the blocking film to move the seesaw. The method of claim 3, wherein The wire is connected to a plurality of rollers installed at a predetermined position on the door, and a corrugated film having a buffer spring installed therein is provided at an intermediate portion of the blocking film, and one end thereof is above the blocking film. Steelmaking equipment, characterized in that the other end is connected to the connecting rod is installed on the upper side is formed by arranging the arm is shared and connected to the connecting ring connected to the wire.

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