JPH0627636B2 - Closure device for bottom tapping of electric furnace - Google Patents
Closure device for bottom tapping of electric furnaceInfo
- Publication number
- JPH0627636B2 JPH0627636B2 JP13153787A JP13153787A JPH0627636B2 JP H0627636 B2 JPH0627636 B2 JP H0627636B2 JP 13153787 A JP13153787 A JP 13153787A JP 13153787 A JP13153787 A JP 13153787A JP H0627636 B2 JPH0627636 B2 JP H0627636B2
- Authority
- JP
- Japan
- Prior art keywords
- electric furnace
- closing plate
- pedestal
- pivotally supported
- closing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、特に確実な閉鎖性を要求される電気炉の炉
底出鋼閉鎖装置に関する。Description: TECHNICAL FIELD The present invention relates to a bottom tap steel closing device for an electric furnace, which requires particularly reliable closure.
電気炉の出鋼方法は屑鉄の溶解・精錬後、電気炉を傾動
（最大４５度）させて、電気炉の側壁から長く伸びた出
鋼樋（２ｍから３ｍ）より溶綱を出鋼する。この方法で
は電気炉内の溶鋼表面に浮遊しているスラグが、出鋼の
際に溶鋼とスラグが一緒に流出してしまう。スラグが一
緒に流出することを防止する方法として、電気炉炉底出
鋼方法が工業化されてきた。In the steelmaking method of the electric furnace, after melting and refining scrap iron, the electric furnace is tilted (maximum 45 degrees), and molten steel is tapped from a steel tapping gutter (2 m to 3 m) extending from the side wall of the electric furnace. In this method, the slag floating on the molten steel surface in the electric furnace flows out together with the molten steel and the slag at the time of tapping. As a method for preventing slag from flowing out together, an electric furnace bottom tapping method has been industrialized.
炉底出鋼方法の閉鎖装置は、例えば特公昭５９−２６２
２９号の公報に示されているものがある。この装置は電
気炉の炉底出鋼の炉の内側に設けたストッパー方式によ
る閉鎖装置であるが、この装置はストッパーが耐火物で
構成されているので、溶鋼・スラグにより溶損する。こ
のためストッパーの取替が必要であり、コストアップと
なる。この解決方法は、例えば特開昭５５−１６２５８
５号の公報に示されている。この公報によれば、第７
図、第８図に示すように電気炉１の炉底２に出鋼口３を
有している。The closing device for the method of tapping the bottom of the furnace is, for example, Japanese Patent Publication No. 59-262.
There is one disclosed in Japanese Patent No. 29. This device is a stopper-type closing device provided inside the furnace for steel bottom tapping of an electric furnace. However, since this device has a stopper made of refractory material, it is melted by molten steel and slag. Therefore, it is necessary to replace the stopper, which increases the cost. This solution is disclosed in, for example, JP-A-55-16258.
No. 5 publication. According to this publication, the seventh
As shown in FIG. 8 and FIG. 8, the bottom 2 of the electric furnace 1 has a tap hole 3.
閉鎖装置は軸４と、シリンダー５と、閉鎖プレート６
と、レバー７から構成され、シリンダー５の作動により
軸４を回動し、軸４に固定されたレバー７と、レバー７
に固定された閉鎖プレート６を作動して出鋼口３を開口
及び閉鎖していた。The closing device comprises a shaft 4, a cylinder 5 and a closing plate 6.
And a lever 7, the shaft 4 is rotated by the operation of the cylinder 5, and the lever 7 is fixed to the shaft 4, and the lever 7
The closing plate 6 fixed to was operated to open and close the tap hole 3.
しかしながら、この装置では電気炉の炉底の鉄皮側に支
持された閉鎖装置であるので、熱を直接受けやすく、電
気炉の溶解・精錬作業中に閉鎖装置の軸、シリンダー等
が加熱されて、閉鎖装置が誤作動を起こし、閉鎖プレー
トが電気炉の溶解精錬作業中に回動し、電気炉内の溶鋼
が電気炉の炉下に流出するような事故を起こしたり、さ
らに電気炉を長期間使用してくると、炉底部の鉄皮形状
が変形してくるので、出鋼口の底部と、閉鎖プレートと
の摺り合わせが悪く、詰物が流出するという問題があっ
た。However, since this device is a closing device supported on the iron skin side of the bottom of the electric furnace, it is likely to receive heat directly, and the shaft, cylinder, etc. of the closing device are heated during the melting and refining work of the electric furnace. , The closing device malfunctions, the closing plate rotates during the melting and refining work of the electric furnace, causing an accident such as molten steel in the electric furnace flowing out to the bottom of the electric furnace, and further extending the electric furnace. Since the shape of the iron shell at the bottom of the furnace is deformed after a long period of use, there was a problem in that the bottom of the tap hole and the closing plate were not in good contact with each other and the filling material flowed out.
この発明は斯かる事情を鑑みてなされたものであって、
特に確実な閉鎖性を要求される電気炉の炉底出鋼閉鎖装
置を得ることを目的とする。The present invention has been made in view of such circumstances,
It is an object of the present invention to obtain a furnace bottom tapping closing device for an electric furnace that requires particularly reliable closure.
この発明に係わる電気炉の炉底出鋼閉鎖装置は炉底出鋼
電気炉の側方に設置された台座と、前記台座の側部に揺
動可能に軸支されたシリンダーと、中央部を前記台座の
側部に回動自在に軸支され一端を前記シリンダーの他端
に軸支されたレバーと、前記台座の底部に取り付けられ
たガイドローラーと、このガイドローラー上を移動する
走行アームと、この走行アームの一端に接続された閉鎖
プレート支持金具と、この閉鎖プレート支持金具に取付
けられた電気炉出鋼口閉鎖プレートと、一端を前記閉鎖
プレート支持金具に軸支され他端を前記レバーの他端に
軸支されたロッドとを特徴とする 〔作用〕 この発明における電気炉の炉底出鋼閉鎖装置は、電気炉
の側方に設置された台座に取り付けられているので、溶
鋼の輻射熱部から退避でき、加熱による閉鎖装置の作動
を防止できる。A furnace bottom tapping closing device for an electric furnace according to the present invention includes a pedestal installed on the side of the furnace bottom tapping electric furnace, a cylinder pivotally supported on the side of the pedestal, and a central part. A lever rotatably supported on the side of the pedestal and one end of which is rotatably supported on the other end of the cylinder, a guide roller attached to the bottom of the pedestal, and a traveling arm that moves on the guide roller. A closing plate support fitting connected to one end of the traveling arm, an electric furnace tap hole closing plate attached to the closing plate support fitting, one end of which is pivotally supported by the closing plate support fitting, and the other end of which is the lever. [Operation] The furnace bottom tapping closing device of the electric furnace according to the present invention is attached to a pedestal installed on the side of the electric furnace. Can be evacuated from the radiant heat section, It prevents actuation of the closure device due to heat.
以下添付図面の第１図から第６図を参照にして、この発
明の実施例を説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 6 of the accompanying drawings.
第１図に示すように電気炉１の炉底２には、出鋼口３が
配置され、出鋼口３の底部には、溶綱９の流出の防止す
る閉鎖装置が取付けている。閉鎖装置は電気炉１の側方
に設置された台座１１に取りつけられ台座１１の側部に
揺動可能に軸支されたシリンダー５を作動すると、中央
部を前記台座の側部に回動自在に軸支され一端を前記シ
リンダーの他端に軸支されたレバー１２がシリンダー５
の作動と一緒に回動する。そしてレバー１２の回動によ
りレバー１２の他端に軸支されているロッド１４と、ロ
ッド１４の他端に軸支されている閉鎖プレート支持金具
１５と、閉鎖プレート支持金具１５の他端に軸支された
閉鎖プラー６が、一緒に出鋼口３より退避するように作
動する。そして 第２図に示すような出鋼口３に対し
て、退避の状態で保持される。As shown in FIG. 1, a tap hole 3 is arranged at the bottom 2 of the electric furnace 1, and a closing device for preventing the molten steel 9 from flowing out is attached to the bottom of the tap port 3. The closing device is attached to a pedestal 11 installed on the side of the electric furnace 1, and when a cylinder 5 pivotally supported on the side of the pedestal 11 is operated, the central portion is rotatable to the side of the pedestal. A lever 12 which is rotatably supported on one end and is rotatably supported on the other end of the cylinder by the cylinder 5.
Rotate with the operation of. The rod 14 is pivotally supported by the other end of the lever 12 by the rotation of the lever 12, the closing plate support fitting 15 is pivotally supported by the other end of the rod 14, and the other end of the closing plate support fitting 15 is pivotally supported. The supported closing puller 6 operates together with the closing puller 6 to retract from the tap hole 3. Then, it is held in a retracted state with respect to the tap hole 3 as shown in FIG.
つぎにこの発明の実施例の動作について説明する。Next, the operation of the embodiment of the present invention will be described.
第１図に示すように電気炉１内には、溶鋼９が収納され
ており、溶鋼の表面にはスラグ１０が浮遊している。電
気炉１の炉底２には出鋼口３が配置されている。この出
鋼口３には、電気炉１の精錬中は出鋼口３を閉鎖してお
く詰物８（珪砂等）が埋込まれている。電気炉の溶解、
精錬が終了後の出鋼準備に入る。第３図に示すように、
電気炉の側方に設置された台座１１の側部に取付けられ
たレバー固定金具１７と、レバー一部の穴付き部１８を
貫通しているロックピン１９をエアーシリンダー２０に
より抜取り、レバー１２が回動可能な状態にする。つぎ
にシリンダー５（油圧装置＝図示せず）により矢印Ｘの
方向に移動すると、シリンダー５の一端に軸置されてい
るレバー１２が矢印Ｘの方向に回動する。As shown in FIG. 1, molten steel 9 is stored in the electric furnace 1, and slag 10 floats on the surface of the molten steel. A tap hole 3 is arranged on the bottom 2 of the electric furnace 1. A padding 8 (silica sand or the like) that keeps the tapping port 3 closed during refining of the electric furnace 1 is embedded in the tapping port 3. Melting of electric furnace,
Preparation for tapping after the refining is completed. As shown in FIG.
The lever fixing metal fitting 17 attached to the side of the pedestal 11 installed on the side of the electric furnace and the lock pin 19 penetrating the holed portion 18 of the lever are pulled out by the air cylinder 20. Make it rotatable. Next, when the cylinder 5 (hydraulic device = not shown) is moved in the direction of arrow X, the lever 12 axially placed at one end of the cylinder 5 is rotated in the direction of arrow X.
さらにレバー１２の他端に軸支されたロッド１４が矢印
Ｘの方向に移動する。ロッド１４の他端が閉鎖プレート
支持金具１５の一端に軸支されている。閉鎖プレート支
持金具１５に布設されている走行アーム１６と、閉鎖プ
レート６と一緒に矢印Ｘの方向に移動する。第５図は閉
鎖プレート６の拡大図、第６図は第５図のＣ−Ｃ線に沿
った断面図である。第５図・第６図に示すように、閉鎖
プレート支持金具１５には、ストッパー２４が設置さ
れ、閉鎖プレート６の作動を制限している。また、閉鎖
プレート６は、耐火部材２２と、閉鎖プレート板２１
と、閉鎖プレート板支持金具２５とから構成され、シャ
フトで軸支されているので閉鎖プレート６は、前後、左
右に作動できる。第４図に示すように、走行アーム１６
は台座１１の下部に固定されたガイドローラー支持金具
２３に取付けられている２対のガイドローラー１３に支
持されている。２対のガイドローラー１３は走行アーム
１６に対して２列以上配置されており、その配置は出鋼
口に近い２対のガイドローラー１３の方が、出鋼口３に
対して遠い２対のカイドローラー１３より仰角になるよ
うに配置する。さらに走行アーム１６の他端（固定して
いない方）の形状を上方に曲げる。第２図により電気炉
炉底の出鋼口３を閉鎖する動作を説明すると、つぎにシ
リンダー５（油圧装置＝図示せず）により矢印Ｙの方向
に移動すると、シリンダー５の一端に軸支されているレ
バー１２が矢印Ｙの方向に回動する。さらにレバー１２
の他端に軸支されたロッド１４が矢印Ｙの方向に移動す
る。ロッド１４の他端が閉鎖プレート支持金具１５の一
端に軸支されている。閉鎖プレート支持金具１５に布設
されている走行アーム１６と、閉鎖プレート１６も一緒
に矢印Ｙの方向に移動する。このような動作を行うの
で、出鋼口３近くにおいて閉鎖プレート６は上向動作に
なり、より確実な閉鎖性が保たれる。さらに電気炉の側
方に設置された台座１１の側部に取付けられたレバー固
定金具１７と、レバー一端の穴付き部１８を一致させ、
エアーシリンダー２０に設置されているロックピン１９
を差し込みストッパーとして作用させることにより、つ
ぎの出鋼までの装置の作動不良等による問題は発生しな
い。本発明と従来法による状況の比較を表１に示す。こ
の表１から明らかなように本発明では、問題は全く発生
していない。Further, the rod 14 pivotally supported on the other end of the lever 12 moves in the direction of arrow X. The other end of the rod 14 is pivotally supported on one end of the closing plate support fitting 15. The traveling arm 16 laid on the closing plate support fitting 15 and the closing plate 6 move in the direction of the arrow X. FIG. 5 is an enlarged view of the closing plate 6, and FIG. 6 is a sectional view taken along the line CC of FIG. As shown in FIGS. 5 and 6, a stopper 24 is installed on the closing plate support fitting 15 to limit the operation of the closing plate 6. Further, the closing plate 6 includes the fireproof member 22 and the closing plate plate 21.
And the closing plate plate support fitting 25, and the shaft is pivotally supported by the shaft, so that the closing plate 6 can be moved forward and backward and left and right. As shown in FIG. 4, the traveling arm 16
Is supported by two pairs of guide rollers 13 attached to guide roller support fittings 23 fixed to the lower part of the base 11. The two pairs of guide rollers 13 are arranged in two or more rows with respect to the traveling arm 16, and the arrangement is such that the two pairs of guide rollers 13 closer to the tap hole are farther from the tap hole 3. It is arranged so that the elevation angle is higher than that of the guide roller 13. Further, the shape of the other end (the one which is not fixed) of the traveling arm 16 is bent upward. The operation of closing the tap hole 3 at the bottom of the electric furnace will be described with reference to FIG. 2. Next, when the cylinder 5 (hydraulic device = not shown) moves in the direction of arrow Y, the cylinder 5 is pivotally supported at one end of the cylinder 5. The lever 12 is rotating in the direction of arrow Y. Further lever 12
The rod 14, which is pivotally supported at the other end of, moves in the direction of arrow Y. The other end of the rod 14 is pivotally supported on one end of the closing plate support fitting 15. The traveling arm 16 provided on the closing plate support fitting 15 and the closing plate 16 also move in the direction of the arrow Y. Since such an operation is performed, the closing plate 6 is moved upward in the vicinity of the tap hole 3 and more reliable closing property is maintained. Further, the lever fixing metal fitting 17 attached to the side portion of the pedestal 11 installed on the side of the electric furnace and the holed portion 18 at one end of the lever are aligned,
Lock pin 19 installed in the air cylinder 20
By acting as an insertion stopper, problems such as malfunction of the device until the next tapping will not occur. Table 1 shows a comparison between the present invention and the conventional method. As is clear from Table 1, no problem has occurred in the present invention.
この発明は上述した一実施例に限定されず、この発明の
要旨を逸脱しない範囲種々変形可能である。例えば第１
図の台座１１は、電気炉の側方に固定されたものである
が、台座１１を台車に乗せて移動可能にしてもよい。 The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, the first
Although the pedestal 11 in the figure is fixed to the side of the electric furnace, the pedestal 11 may be placed on a dolly so as to be movable.
この発明によれば、閉鎖装置への輻射熱が減少するの
で、装置の作動不良を防止し確実な閉鎖性を保持するの
で、作業性は著しく向上する。According to the present invention, the radiant heat to the closing device is reduced, so that a malfunction of the device is prevented and a reliable closing property is maintained, so that workability is significantly improved.
第１図はこの発明の実施例に係わる電気炉の炉底出鋼閉
鎖装置の出鋼口を閉鎖している場合の側面図。第２図
はこの発明の実施例に係わる電気炉の炉底出鋼閉鎖装置
の出鋼口を開口している場合の側面図。 第３図は第１
図のＡ−Ａ線に沿った断面図。第４図は第１図のＢ−Ｂ
線に沿った断面図。第５図は第２図の閉鎖プレートの拡
大図。第６図は第５図のＣ−Ｃ線に 沿った断面図。第
７図は従来の炉底出鋼閉鎖装置の正面図。第８図は従来
の炉底出鋼閉鎖装置の側面図である。 １……電気炉、２……炉底、３……出鋼口、 ５……シリンダー、１２……レバー、 １３……ガイドローラー、１４……ロッド、１５……閉
鎖プレート支持金具、 １６……走行アームFIG. 1 is a side view when the steel tap opening of the bottom tap steel closing device of the electric furnace according to the embodiment of the present invention is closed. Fig. 2
FIG. 4 is a side view of the steel bottom tapping closing device of the electric furnace according to the embodiment of the present invention in which a tapping port is opened. Figure 3 is the first
Sectional drawing which followed the AA line of a figure. FIG. 4 is BB of FIG.
Sectional drawing along the line. FIG. 5 is an enlarged view of the closing plate of FIG. FIG. 6 is a sectional view taken along the line CC of FIG. FIG. 7 is a front view of a conventional furnace bottom tapping closing device. FIG. 8 is a side view of a conventional furnace bottom steel closing device. 1 ... Electric furnace, 2 ... Furnace bottom, 3 ... Steel tap, 5 ... Cylinder, 12 ... Lever, 13 ... Guide roller, 14 ... Rod, 15 ... Closure plate support metal fitting, 16 ... … Running arm
Claims (1)
と、前記台座の側部に揺動可能に軸支されたシリンダー
と、中央部を前記台座の側部に回動自在に軸支され一端
を前記シリンダーの他端に軸支されたレバーと、前記台
座の底部に取り付けられたガイドローラーと、該ガイド
ローラー上を移動する走行アームと、この走行アームの
一端に接続された閉鎖プレート支持金具と、この閉鎖プ
レート支持金具に取付けられた電気炉出鋼口閉鎖プレー
トと、一端を前記閉鎖プレート支持金具に軸支され他端
を前記レバーの他端に軸支されたロッドとを備えたこと
を特徴とする電気炉の炉底出鋼閉鎖装置。1. A pedestal installed on the side of the furnace bottom steel-making electric furnace, a cylinder pivotally supported on the side of the pedestal, and a central part rotatable about the side of the pedestal. A lever whose one end is pivotally supported on the other end of the cylinder, a guide roller attached to the bottom of the pedestal, a traveling arm that moves on the guide roller, and one end of the traveling arm. Closing plate support metal fitting, electric furnace tap hole closing plate attached to the closing plate support metal fitting, one end pivotally supported by the closing plate support metal fitting and the other end pivotally supported by the other end of the lever An apparatus for closing steel bottom tapping of an electric furnace, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13153787A JPH0627636B2 (en) | 1987-05-29 | 1987-05-29 | Closure device for bottom tapping of electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13153787A JPH0627636B2 (en) | 1987-05-29 | 1987-05-29 | Closure device for bottom tapping of electric furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63297989A JPS63297989A (en) | 1988-12-05 |
| JPH0627636B2 true JPH0627636B2 (en) | 1994-04-13 |
Family
ID=15060392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13153787A Expired - Fee Related JPH0627636B2 (en) | 1987-05-29 | 1987-05-29 | Closure device for bottom tapping of electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0627636B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100777234B1 (en) * | 2001-10-31 | 2007-11-19 | 주식회사 포스코 | Eccentric bottom tapping opener of electrode arc furnace |
-
1987
- 1987-05-29 JP JP13153787A patent/JPH0627636B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63297989A (en) | 1988-12-05 |
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