JP3440381B2 - Equipment for processing molten metal - Google Patents
Equipment for processing molten metalInfo
- Publication number
- JP3440381B2 JP3440381B2 JP07454593A JP7454593A JP3440381B2 JP 3440381 B2 JP3440381 B2 JP 3440381B2 JP 07454593 A JP07454593 A JP 07454593A JP 7454593 A JP7454593 A JP 7454593A JP 3440381 B2 JP3440381 B2 JP 3440381B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- baffle plate
- lid
- baffle
- eddy currents
- 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
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】この発明は溶融金属の処理装置、
さらに詳しくいえば、処理槽の蓋に渦流および波立ち防
止用邪魔板が垂下状に設けられているとともに、渦流お
よび波立ち防止用邪魔板の下部が処理槽内に入れられた
溶融金属中に浸漬されるようになされており、溶融金属
中に処理ガスを微細な気泡状態で導入するとともに溶融
金属中に浸漬した回転体によって溶融金属を攪拌し、処
理ガスと溶融金属とを接触させて溶融金属中の溶存ガス
や非金属介在物を除去する装置に関する。
【０００２】
【従来の技術】この種溶融金属の処理装置として、処理
槽の蓋の下面に邪魔板取付部分が設けられ、渦流および
波立ち防止用邪魔板の上端部が、ボルトとナットにより
取付部分に着脱自在に取付けられたものが知られている
（実公平１−７７１６号公報参照）。
【０００３】
【発明が解決しようとする課題】しかしながら、従来の
装置では、処理作業中に溶融金属が飛散し、ボルト、ナ
ットが浸食され、邪魔板の交換時に容易に取り外すこと
ができないという問題がある。しかも、邪魔板が消耗、
損傷していない場合であっても、ボルト、ナットが浸食
されると、邪魔板が脱落するおそれがあるので、これら
を取り替える必要があり、その作業が面倒であるという
問題がある。さらに、邪魔板や、ボルト、ナット等を取
り替えるさいには、クレーン等で蓋全体を吊り上げて行
なう必要があり、その作業が面倒であるという問題があ
る。
【０００４】この発明の目的は、上記問題を解決した溶
融金属の処理装置を提供することにある。
【０００５】
【課題を解決するための手段】この発明による溶融金属
の処理装置は、処理槽の上端開口が蓋により閉鎖され、
蓋に渦流および波立ち防止用邪魔板が垂下状に設けられ
ているとともに、渦流および波立ち防止用邪魔板の下部
が処理槽内に入れられた溶融金属中に浸漬されるように
なされており、溶融金属中に処理ガスを微細な気泡状態
で導入するとともに溶融金属中に浸漬した回転体によっ
て溶融金属を攪拌し、処理ガスと溶融金属とを接触させ
て溶融金属中の溶存ガスや非金属介在物を除去する装置
であって、蓋に邪魔板だけが通される邪魔板挿通用貫通
孔が形成されるとともに、蓋の上面に邪魔板取付部分が
設けられ、渦流および波立ち防止用邪魔板が邪魔板挿通
用貫通孔に通されるとともに蓋の外部において邪魔板取
付部分に着脱自在に取付けられているものである。
【０００６】
【作用】処理槽の上端開口を閉鎖する蓋に邪魔板だけが
通される邪魔板挿通用貫通孔が形成されるとともに、蓋
の上面に邪魔板取付部分が設けられ、渦流および波立ち
防止用邪魔板が邪魔板挿通用貫通孔に通されるとともに
蓋の外部において邪魔板取付部分に着脱自在に取付けら
れていると、処理作業中においても、溶融金属が邪魔板
取付部分に邪魔板を取付けるボルト、ナット等の部材に
飛散することはなく、これらの部材の浸食が防止され
る。また、邪魔板を取り替えるさいにも、蓋の外部で作
業を行なえるので、蓋を外す必要がなくなる。
【０００７】
【実施例】以下、この発明の実施例を、図面を参照して
説明する。
【０００８】溶融金属の処理装置は、着脱自在の蓋(2)
を有する溶融金属を入れるための処理槽(1) と、蓋(2)
に垂下状に設けられ、かつ下部が処理層(1) 内に入れら
れた溶融金属中に浸漬される複数の渦流および波立ち防
止用邪魔板(3) と、処理槽(1) 内に配置されるととも
に、蓋(2) を貫通して上部が処理槽(1) の外部にのび、
かつ内部に処理ガス供給路(5) を有する垂直回転軸(4)
と、垂直回転軸(4) の下端に固定状に設けられた処理ガ
ス微細化分散用回転体(6) とを備えている。渦流および
波立ち防止用邪魔板(3) は、ＳｉＣ、ＳｉＮ等のセラミ
ックスや黒鉛で形成されているのがよいが、これに限る
ものではなく、溶融金属と反応せず、かつ溶融金属に浸
食されにくい材料からなるものであればよい。
【０００９】蓋(2) における垂直回転軸(4) と同心の円
周上に、邪魔板挿通用貫通孔(7) が周方向に間隔をおい
て複数形成されている。また、蓋(2) の上面における各
貫通孔(7) に近接した部分に、邪魔板取付部分(8) が上
方突出状に一体に形成されている。そして、渦流および
波立ち防止用邪魔板(3) が貫通孔(7) に通され、その上
端部がボルト(9) およびナット(11)により邪魔板取付部
分(8) に着脱自在に取付けられている。なお、渦流およ
び波立ち防止用邪魔板(3) は、回転体(6) により攪拌さ
れた溶融金属の流れ方向と直交する向きに配置されてい
るのがよい。
【００１０】垂直回転軸(4) は、処理層(1) の上方に配
置された回転駆動装置（図示略）によって回転させられ
るようになっている。処理ガス供給路(5) の上端は図示
しない処理ガス供給装置に接続され、下端は回転体(6)
内部の中央部に形成されたガス室（図示略）内に開口し
ている。図示は省略したが、回転体(6) の周面に周方向
に間隔をおいて複数の攪拌用突起が形成されている。ま
た、回転体(6) に一端がガス室に開口するとともに他端
が攪拌用突起の先端面に開口した複数の貫通孔が放射状
に形成されている。さらに、回転体(6) の底面には中央
部から周面に至る複数の溝が放射状に設けられている。
【００１１】このような構成において、垂直回転軸(4)
が駆動装置により高速回転させられるとともに、処理ガ
ス供給装置から処理ガス供給路(5) に処理ガスが供給さ
れる。処理ガスは処理ガス供給路(5) の下端からガス室
内に放出され、放射状の貫通孔を通って周縁に流れ、そ
の攪拌用突起の先端面から微細化された気泡状態で溶融
金属中に放出される。微細化された気泡は、回転体(6)
の回転により生じる溶融金属の流れにのって処理層(1)
全体に分散される。このとき、邪魔板(3) によって溶融
金属表面の著しい渦流および波立ちが防止される。ま
た、邪魔板(3) の背面（溶融金属の流れが当たる面と反
対側の面）側に小さな乱流が発生し、この乱流により処
理ガスの微細化貴方が一層効率良く処理槽(1) 全体に分
散させられる。そして、処理槽(1) 全体に分散した処理
ガスの気泡が溶融金属と接触し、溶存ガスおよび非金属
介在物が除去される。
【００１２】消耗、損傷等により渦流および波立ち防止
用邪魔板(3) を取り替える必要が生じた場合には、蓋
(2) の外部でボルト(9) 、ナット(11)を取外して行なえ
ばよい。
【００１３】
【発明の効果】この発明の溶融金属の処理装置によれ
ば、上述のように、処理作業中においても、溶融金属が
邪魔板取付部分に邪魔板を取付けるボルト、ナット等の
部材に飛散することはなく、これらの部材の浸食が防止
される。したがって、邪魔板の交換時に容易に取り外す
ことができる。しかも、ボルト、ナット等の部材の浸食
に起因する邪魔板の取換えの必要がなくなる。また、邪
魔板を取り替えるさいにも、蓋を外す必要がなくなるの
で、その作業が簡単になる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating molten metal,
More specifically, a baffle for preventing eddy currents and undulations is provided in a hanging manner on the lid of the processing tank, and a lower portion of the baffle for preventing eddy currents and undulations is immersed in the molten metal placed in the processing tank. The processing gas is introduced into the molten metal in the form of fine bubbles, and the molten metal is stirred by a rotating body immersed in the molten metal, and the processing gas and the molten metal are brought into contact with each other. For removing dissolved gases and non-metallic inclusions. 2. Description of the Related Art As an apparatus for treating molten metal of this type, a baffle plate mounting portion is provided on the lower surface of a lid of a processing tank, and an upper end portion of a baffle plate for preventing eddy currents and waving is mounted by bolts and nuts. Is known (see Japanese Utility Model Publication No. 1-7716). [0003] However, the conventional apparatus has a problem that molten metal is scattered during the processing operation, the bolts and nuts are eroded, and it is not easy to remove the baffle plate when replacing it. is there. Moreover, the baffle is worn out,
Even if the bolts and nuts are not damaged, if the bolts and nuts are eroded, the baffle plate may fall off. Therefore, it is necessary to replace these, and there is a problem that the operation is troublesome. Further, when replacing baffles, bolts, nuts, and the like, it is necessary to lift the entire lid with a crane or the like, and there is a problem that the operation is troublesome. An object of the present invention is to provide a molten metal processing apparatus which solves the above problems. [0005] In the molten metal processing apparatus according to the present invention, the upper end opening of the processing tank is closed by a lid,
The baffle for preventing eddy currents and ripples is provided on the lid in a drooping manner, and the lower part of the baffle for preventing vortex currents and ripples is immersed in the molten metal placed in the processing tank, and The processing gas is introduced into the metal in the form of fine bubbles, and the molten metal is stirred by the rotating body immersed in the molten metal, and the processing gas and the molten metal are brought into contact with each other to dissolve the dissolved gas and nonmetallic inclusions in the molten metal. A baffle plate insertion through-hole through which only the baffle plate is passed is formed in the lid, and a baffle plate attachment portion is provided on the upper surface of the lid, so that the baffle plate for preventing eddy currents and waving is obstructed. Board insertion
And is detachably attached to the baffle plate attaching portion outside the lid. [0006] Only a baffle plate is provided on the lid for closing the upper opening of the processing tank.
A baffle plate insertion through hole to be passed is formed, and a baffle plate attachment portion is provided on the upper surface of the lid, and a vortex and waving prevention baffle plate is passed through the baffle plate insertion through hole and at the outside of the lid. If the baffle plate is removably attached to the baffle plate mounting portion, the molten metal will not scatter to bolts, nuts, etc., which attach the baffle plate to the baffle plate mounting portion, even during processing work, and these members will erode. Is prevented. Also, when replacing the baffle plate, the work can be performed outside the lid, so that it is not necessary to remove the lid. An embodiment of the present invention will be described below with reference to the drawings. [0008] The apparatus for treating molten metal has a detachable lid (2).
Treatment tank (1) for containing molten metal with lid, and lid (2)
A plurality of baffles (3) for preventing eddy currents and undulations, which are provided in a drooping manner, and the lower part of which is immersed in the molten metal contained in the treatment layer (1), and are disposed in the treatment tank (1). And the upper part extends outside the treatment tank (1) through the lid (2),
And a vertical rotating shaft (4) having a processing gas supply path (5) inside.
And a rotating body (6) for finely dispersing and treating the processing gas fixedly provided at the lower end of the vertical rotating shaft (4). The baffle plate (3) for preventing eddy currents and ripples is preferably made of ceramics such as SiC or SiN or graphite, but is not limited thereto, and does not react with the molten metal and is eroded by the molten metal. What is necessary is just to consist of a difficult material. A plurality of baffle plate through holes (7) are formed on the circumference of the lid (2) concentric with the vertical rotation axis (4) at intervals in the circumferential direction. A baffle plate mounting portion (8) is formed integrally with the upper surface of the lid (2) so as to protrude upward at a portion adjacent to each through hole (7). The baffle plate (3) for preventing eddy currents and ripples is passed through the through-hole (7), and the upper end thereof is detachably attached to the baffle plate attachment portion (8) by bolts (9) and nuts (11). I have. The baffle plate (3) for preventing eddy currents and undulations is preferably arranged in a direction perpendicular to the flow direction of the molten metal stirred by the rotating body (6). The vertical rotating shaft (4) is rotated by a rotary drive (not shown) disposed above the processing layer (1). The upper end of the processing gas supply path (5) is connected to a processing gas supply device (not shown), and the lower end is a rotating body (6).
It opens into a gas chamber (not shown) formed at the center of the interior. Although not shown, a plurality of agitating projections are formed on the peripheral surface of the rotating body (6) at intervals in the circumferential direction. The rotating body (6) has a plurality of radially formed through holes, one end of which is open to the gas chamber and the other end of which is open to the tip surface of the stirring projection. Further, a plurality of grooves extending radially from the central portion to the peripheral surface are provided on the bottom surface of the rotating body (6). In such a configuration, the vertical rotation shaft (4)
Is rotated at a high speed by the driving device, and the processing gas is supplied from the processing gas supply device to the processing gas supply path (5). The processing gas is discharged into the gas chamber from the lower end of the processing gas supply path (5), flows to the periphery through the radial through-hole, and is discharged into the molten metal in the form of fine bubbles from the tip of the stirring projection. Is done. The microbubbles are the rotating body (6)
Treatment layer along the flow of molten metal generated by the rotation of
Distributed throughout. At this time, the baffle plate (3) prevents remarkable eddies and undulations on the surface of the molten metal. In addition, a small turbulent flow is generated on the back side of the baffle plate (3) (the surface opposite to the surface on which the molten metal flows), and this turbulent flow allows the processing gas to be refined more efficiently. ) Distributed throughout. Then, bubbles of the processing gas dispersed throughout the processing tank (1) come into contact with the molten metal, and the dissolved gas and nonmetallic inclusions are removed. If it becomes necessary to replace the vortex and ripple preventing baffle (3) due to wear, damage, etc.
The bolt (9) and the nut (11) may be removed outside (2). According to the molten metal processing apparatus of the present invention, as described above, even during the processing operation, the molten metal can be applied to members such as bolts and nuts for attaching the baffle plate to the baffle plate mounting portion. There is no scattering, and erosion of these members is prevented. Therefore, the baffle can be easily removed at the time of replacement. In addition, there is no need to replace baffles due to erosion of members such as bolts and nuts. In addition, since it is not necessary to remove the lid when replacing the baffle plate, the operation is simplified.
【図面の簡単な説明】 【図１】この発明の実施例を示す垂直断面図である。 【図２】図１のII−II線拡大断面図である。 【符号の説明】 １ 処理槽 ２ 蓋 ３ 渦流および波立ち防止用邪魔板 ６ 回転体 ７ 邪魔板挿通用貫通孔 ８ 邪魔板取付部分[Brief description of the drawings] FIG. 1 is a vertical sectional view showing an embodiment of the present invention. FIG. 2 is an enlarged sectional view taken along line II-II of FIG. [Explanation of symbols] 1 Processing tank 2 lid 3 Baffle plate for preventing eddy currents and ripples 6 rotating body 7 Through hole for baffle plate insertion 8 Baffle plate mounting part
Claims (1)
蓋に渦流および波立ち防止用邪魔板が垂下状に設けられ
ているとともに、渦流および波立ち防止用邪魔板の下部
が処理槽内に入れられた溶融金属中に浸漬されるように
なされており、溶融金属中に処理ガスを微細な気泡状態
で導入するとともに溶融金属中に浸漬した回転体によっ
て溶融金属を攪拌し、処理ガスと溶融金属とを接触させ
て溶融金属中の溶存ガスや非金属介在物を除去する装置
であって、蓋に邪魔板だけが通される邪魔板挿通用貫通
孔が形成されるとともに、蓋の上面に邪魔板取付部分が
設けられ、渦流および波立ち防止用邪魔板が邪魔板挿通
用貫通孔に通されるとともに蓋の外部において邪魔板取
付部分に着脱自在に取付けられている溶融金属の処理装
置。(57) [Claims 1] The upper end opening of the processing tank is closed by a lid,
The baffle for preventing eddy currents and waviness is provided on the lid in a drooping shape, and the lower part of the baffle for preventing eddy currents and waviness is immersed in the molten metal placed in the processing tank, and The processing gas is introduced into the metal in the form of fine bubbles, and the molten metal is stirred by the rotating body immersed in the molten metal, and the processing gas and the molten metal are brought into contact with each other to dissolve dissolved gases and nonmetallic inclusions in the molten metal. A baffle plate insertion through hole through which only the baffle plate is passed is formed in the lid, and a baffle plate attachment portion is provided on the upper surface of the lid, so that the baffle plate for preventing eddy currents and waving is obstructed. Board insertion
Molten metal treatment device that is passed through a through hole for use and is detachably attached to a baffle plate attachment portion outside the lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07454593A JP3440381B2 (en) | 1993-03-31 | 1993-03-31 | Equipment for processing molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07454593A JP3440381B2 (en) | 1993-03-31 | 1993-03-31 | Equipment for processing molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06287651A JPH06287651A (en) | 1994-10-11 |
| JP3440381B2 true JP3440381B2 (en) | 2003-08-25 |
Family
ID=13550338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07454593A Expired - Fee Related JP3440381B2 (en) | 1993-03-31 | 1993-03-31 | Equipment for processing molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3440381B2 (en) |
-
1993
- 1993-03-31 JP JP07454593A patent/JP3440381B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06287651A (en) | 1994-10-11 |
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