JPH06323734A - Electric furnace facility - Google Patents

Abstract

PURPOSE:To prevent dust and oil mist from injecting and scattering out of a room of an intermediate house by incorporating a crane for charging scrap charged in a bucket at least in an electric furnace in the house formed of a partition wall. CONSTITUTION:An electric furnace 21, a body inclining unit 21a, an electrode elevator, etc., are contained in an intermediate house 10 formed of a partition wall 11, and a crane 41 for charging scrap charged in a bucket 31 in the furnace 21 is contained in the same house. Dust, oil most injected, scattered when the scrap is charged in the electric furnace are retained in the house 10, noise generated in a melting period, etc., of the scrap is shut OFF by the wall 11 of a sealed structure for forming the house 10, and the dust, the mist are treated by a dust collector through a duct 71. Thus, it prevents the dust, the mist from injecting, scattering out of the house 10 and reduces leakage of noise out of the house, thereby improving an operating environment.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to electric furnace equipment. Electric furnace equipment is used to melt scrap. The electric furnace equipment includes an electric furnace, for example, an arc furnace as a core, an intermediate house (sky house) for accommodating the electric furnace, a crane device for throwing scrap loaded in a bucket into the electric furnace, and a maintenance aid. It consists of a crane device and so on. The present invention relates to improvement of such electric furnace equipment.

[0002]

2. Description of the Related Art Conventionally, as an electric furnace facility as described above,
An electric furnace, an intermediate house accommodating the electric furnace, and a crane device mounted outside the intermediate house are used (Japanese Patent Laid-Open No. 3-247987). The intermediate house constructed by the partition wall is formed with an opening having a correspondingly large diameter for loading and unloading the bucket suspended by the crane device, and an opening / closing door is attached to the opening.

In such a conventional electric furnace facility, a bucket loaded with scraps is mounted on a trolley and moved to a predetermined position, where the bucket is hung by a crane device to be lifted and moved to a position directly above the electric furnace. To do. Next, the opening / closing door and furnace lid of the intermediate house are opened, the bucket is lowered while being hung by the crane device, and the bottom lid of the bucket is opened to throw scrap into the electric furnace.
Then, the emptied bucket is lifted again while being hung by the crane device, the furnace lid and the opening / closing door of the intermediate house are closed, and the bucket is moved again by the crane device.

However, in the above-mentioned conventional electric furnace equipment, when the scrap is put into the electric furnace, since the opening / closing door attached to the opening of the intermediate house for accommodating the electric furnace is opened, a large amount is opened from the opening. However, there is a drawback in that the dust and oil smoke of the above are ejected and scattered outside the room of the intermediate house. Even if an air curtain is applied to the opening to which the opening / closing door is attached, in reality, it is not possible to prevent dust and oil smoke from being blown out and scattered. Further, the conventional electric furnace equipment has a drawback that noise is severely leaked to the outside even if the opening / closing door is attached to the opening of the intermediate house for accommodating the electric furnace, because the structure is not completely closed. The above-mentioned conventional electric furnace equipment has a bad working environment.

[0005]

The problem to be solved by the present invention is that in the conventional electric furnace equipment, a large amount of dust and oil smoke are jetted and scattered outside the intermediate house, and noise is leaked to the outside. It is also intense and the working environment is bad.

[0006]

According to the present invention, at least an electric furnace and a crane device for charging scraps loaded in a bucket into the electric furnace are housed in a room of an intermediate house constructed by partition walls. The present invention relates to an electric furnace facility characterized by being formed.

In the present invention, not only is the electric furnace and its direct accessory devices, such as the electrode lifting device and tilting device, housed in the room of the intermediate house constructed by the partition walls, but at the same time, at least the electric furnace is installed. A crane device for loading the scrap loaded in the bucket is stored. The crane device is mounted in the same room as the intermediate house that houses the electric furnace. Normally, the partition wall that constructs the intermediate house has an opening for loading and unloading a truck with a bucket for scrap loading, an opening for loading and unloading a truck with a ladle for loading molten metal, and an opening for work. Open / close doors are attached to these openings of correspondingly small diameter, and a duct connected to the dust collector is attached to the upper part of the partition wall forming the intermediate house.

[0008]

The electric furnace and the crane device for charging the scrap loaded in the bucket into the electric furnace are housed in the room of the intermediate house. Dust and oil fumes that are ejected and scattered when throwing scrap into the electric furnace remain in the room of the intermediate house, and these are sucked into the dust collector through the duct and processed. In addition, the bulkhead that constructs the intermediate house does not have a correspondingly large opening for loading and unloading buckets that are suspended by a crane device. It is possible to reduce the leakage of noise to the room.

[0009]

1 is a vertical sectional view schematically showing an embodiment of the present invention. An electric furnace 21 and a tilting device 21 which is a direct accessory device for the electric furnace 21 are provided in the room of the intermediate house 10 constructed by the partition wall 11.
a, an electrode lifting device (not shown), etc. are housed, and a crane device 41 for charging the scrap loaded in the bucket 31 into the electric furnace 21 is housed in the same chamber. An opening 61 for loading and unloading a dolly 51 having a bucket for loading scraps is installed at the lower part of one side wall of the partition wall 11, and a dolly 52 having a ladle for loading molten metal is installed at the lower part of the other side wall of the partition wall 11. An opening 62 for inserting and removing is formed, and an opening for work (not shown) is formed in the partition wall 11. The opening 6 having a correspondingly small diameter is formed.
Opening / closing doors 61a and 62a are attached to 1, 62, and a duct 71 connected to a dust collector (not shown) is attached to the central portion of the top wall of the partition wall 11.

The opening / closing door 61a is opened, the bucket loaded with scrap is mounted on the trolley 51, loaded into the interior of the intermediate house 10, and the opening / closing door 61a is closed. Then, the bucket 31 is hung by the crane device 41 and lifted. Let the electric furnace 2
Move to the position directly above 1. Next, the furnace lid is opened, the bucket 31 is lowered while being suspended by the crane device 41, the bottom lid of the bucket 31 is opened, and the scrap is put into the electric furnace 21. The emptied bucket is lifted again by the crane device 41 while being suspended, the furnace lid is closed, the bucket device is moved again to the original position by the crane device 41, and the bucket is mounted on the trolley. Then, the opening / closing door 61a is opened, the trolley carrying the empty bucket is loaded to the outside of the intermediate house 10, and the opening / closing door 61a is closed. The following is a repeat of this.

A crane device for raising and lowering a bucket and for moving scrap into the electric furnace is housed in a room of an intermediate house that houses the electric furnace, and when the scrap is thrown into the electric furnace, jetting and scattering are performed. The dust or oily smoke is retained in the room of the intermediate house, and the noise generated during the melting period of the scrap is cut off by the partition wall of the closed structure that constructs the intermediate house, and the dust or oily smoke is attached to the intermediate house. The final processing is done by a dust collector through the duct.

[0012]

As is apparent from the above, according to the present invention described above, it is possible to prevent dust and oil smoke from being ejected and scattered to the outside of the intermediate house when throwing scrap into the electric furnace, and to the outside of the house. There is an effect that the work environment can be improved by reducing the leakage of noise.

[Brief description of drawings]

FIG. 1 is a vertical sectional view schematically showing an embodiment of the present invention.

[Explanation of symbols]

10 ... Intermediate house, 11 ... Bulkhead, 21 ... Electric furnace, 31 ... Bucket, 41 ... Crane device,
51, 52 ... Bogie, 71 ... Duct

Claims (1)

[Claims] 1. An electric furnace facility comprising at least an electric furnace and a crane device for charging scraps loaded in a bucket into the electric furnace, which is housed in a room of an intermediate house constructed by partition walls.