JPS6140736B2 - - Google Patents
Info
- Publication number
- JPS6140736B2 JPS6140736B2 JP24663783A JP24663783A JPS6140736B2 JP S6140736 B2 JPS6140736 B2 JP S6140736B2 JP 24663783 A JP24663783 A JP 24663783A JP 24663783 A JP24663783 A JP 24663783A JP S6140736 B2 JPS6140736 B2 JP S6140736B2
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- seal member
- processing
- annular seal
- tank
- 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
Links
- 229910052782 aluminium Inorganic materials 0.000 claims description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 23
- 238000003780 insertion Methods 0.000 claims description 18
- 230000037431 insertion Effects 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 28
- 230000003028 elevating effect Effects 0.000 description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】
この発明は、アルミニウム溶湯処理槽における
回転軸挿入口のシール装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing device for a rotating shaft insertion port in a molten aluminum processing tank.
鋳造前のアルミニウム溶湯には、水素ガスなど
の有害ガスや、アルミニウムおよびマグネシウム
の酸化物などの非金属介在物が含まれている。上
記水素ガスおよび非金属介在物は、得られた鋳塊
およびこの鋳塊からつくられる製品に欠陥を生じ
させる原因となる。そこで従来、これらを除去す
る方法として、アルミニウム溶湯中にチツ素ガ
ス、アルゴンガス等の不活性ガスや塩素ガスを気
泡状態で吹込む方法が採用されている。不活性ガ
スや塩素ガスをアルミニウム溶湯中に気泡状態で
吹込むには、たとえばアルミニウム溶湯処理槽の
蓋に形成された回転軸挿入口を通つて処理槽内に
ガス通路およびガス吹出口を有する回転軸を挿入
し、この回転軸を回転させながらガス吹出口から
不活性ガスや塩素ガスを吹出すことによつて行な
つていた。ところで、とくに高純度のアルミニウ
ム溶湯を処理する場合には、溶湯を外気と遮断し
て行なう必要があるが、回転軸の出入れおよび回
転に支障をきたさないためには、回転軸挿入口と
回転軸との間をシールすることは困難であり、溶
湯表面全体が外気に接触し、処理効率が低下する
という問題があつた。 Molten aluminum before casting contains harmful gases such as hydrogen gas and nonmetallic inclusions such as oxides of aluminum and magnesium. The hydrogen gas and nonmetallic inclusions cause defects in the obtained ingot and products made from this ingot. Conventionally, as a method for removing these, a method has been adopted in which inert gas such as nitrogen gas or argon gas or chlorine gas is blown into the molten aluminum in the form of bubbles. In order to blow inert gas or chlorine gas into molten aluminum in the form of bubbles, for example, a rotary shaft having a gas passage and a gas outlet into the processing tank through a rotating shaft insertion port formed in the lid of the molten aluminum processing tank is used. This was done by inserting a shaft and blowing out inert gas or chlorine gas from the gas outlet while rotating the rotating shaft. By the way, especially when processing high-purity molten aluminum, it is necessary to isolate the molten metal from the outside air, but in order to prevent problems with the rotation and insertion of the rotating shaft, it is necessary to It is difficult to seal the space between the molten metal and the shaft, and the entire surface of the molten metal comes into contact with the outside air, resulting in a reduction in processing efficiency.
この発明は上記実情に鑑みてなされたものであ
つて、回転軸挿入口と回転軸との間のシールをよ
り完全にし、その結果処理効率の向上を図ること
のできるシール装置を提供することを目的とす
る。 The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a sealing device that can more completely seal between the rotary shaft insertion port and the rotary shaft, thereby improving processing efficiency. purpose.
この明細書において「アルミニウム」という語
は純アルミニウム、少量の不純物を含むアルミニ
ウムおよびアルミニウム合金を含む意味で用いら
れる。また、「不活性ガス」という語は、周期表
のアルゴンガス、ヘリウムガス等の他にアルミニ
ウムに対して不活性なチツ素ガス等も含む意味で
用いられる。 In this specification, the term "aluminum" is used to include pure aluminum, aluminum containing small amounts of impurities, and aluminum alloys. Furthermore, the term "inert gas" is used to include not only argon gas, helium gas, etc. in the periodic table, but also nitrogen gas, etc., which is inert to aluminum.
この発明によるアルミニウム溶湯処理槽におけ
る回転軸挿入口のシール装置は、アルミニウム溶
湯処理槽の蓋に形成された回転軸挿入口に配置さ
れているシール部材用受座と、内部に処理ガス通
路を有しかつ回転軸挿入口を通つて処理槽内に出
入れされる昇降自在の処理ガス吹込み用回転軸
と、回転軸の周囲に配置されかつ回転軸とともに
昇降する環状部材と、回転軸に嵌め被せられると
ともに上端部で環状シール部材に取付けられてい
るセラミツクス製筒体とを備えており、回転軸が
下限位置にあるときに、環状シール部材が受座に
密着状態で受けられるとともに、筒体の下端が溶
湯表面よりも下方にくるようになされているもの
である。 A sealing device for a rotating shaft insertion port in a molten aluminum processing tank according to the present invention includes a seat for a sealing member disposed in a rotating shaft insertion port formed in a lid of a molten aluminum processing tank, and a processing gas passage inside. A rotating shaft for blowing processing gas that can be raised and lowered to be taken in and out of the processing tank through the rotating shaft insertion port, an annular member that is arranged around the rotating shaft and moves up and down together with the rotating shaft, and a ring-shaped member that is fitted onto the rotating shaft. It is equipped with a ceramic cylindrical body that is placed over the annular seal member and attached to the annular seal member at its upper end, so that when the rotating shaft is at the lower limit position, the annular seal member is closely received by the catch, and the cylindrical body The lower end of the molten metal is below the surface of the molten metal.
上記において、シール部材用受座は、たとえば
炭化ケイ素からつくられる。回転軸はカーボン製
で、内部に処理ガス通路を有する。また、回転軸
の下端にはたとえば円盤状気泡状処理ガス放出部
材を取付けておくのがよい。環状シール部材およ
び筒体としては、たとえばチツ化ケイ素などのセ
ラミツクス製のものを用いるのがよい。筒体の環
状シール部材への取付けは、環状シール部材の内
周面に雌ねじを形成するとともに筒体の上端部外
周面に雄ねじを形成しておき、筒体の上端部を環
状シール部材にねじ嵌めることにより行ない、着
脱自在としておくのがよい。環状シール部材およ
び筒体が、たとえばチツ化ケイ素製の場合、ねじ
切り加工を施すことは可能である。また、筒体の
下端は回転軸の下端よりも上方にある。 In the above, the seat for the seal member is made of silicon carbide, for example. The rotating shaft is made of carbon and has a processing gas passage inside. Further, it is preferable to attach, for example, a disk-shaped, bubble-shaped processing gas release member to the lower end of the rotating shaft. The annular sealing member and the cylindrical body are preferably made of ceramics such as silicon nitride. To attach the cylinder to the annular seal member, first form a female thread on the inner peripheral surface of the annular seal member and a male thread on the outer peripheral surface of the upper end of the cylinder, then screw the upper end of the cylinder into the annular seal member. It is best to do this by fitting it in and making it removable. If the annular seal member and the cylindrical body are made of silicon nitride, for example, it is possible to perform thread cutting. Further, the lower end of the cylinder is located above the lower end of the rotating shaft.
この発明によるシール装置は上述のように構成
されているので、回転軸を下限位置まで下降させ
ると、環状シール部材もこれとともに下降し、シ
ール部材用受座に密着した状態で受けられる。し
たがつて、回転軸挿入口と回転軸との間のシール
を、回転軸を下降させるだけで簡単に行なうこと
ができる。また、回転軸の下限位置で筒体の下端
部が溶湯中に浸漬されるので、筒体に囲まれた部
分の溶湯表面だけが大気と接することになる。し
たがつて、大気との接触面積が小さくなつて、大
気の影響を受けにくくなり処理効率が向上する。 Since the seal device according to the present invention is configured as described above, when the rotating shaft is lowered to the lower limit position, the annular seal member also lowers together with the rotary shaft and is received in a state in close contact with the seal member seat. Therefore, sealing between the rotating shaft insertion port and the rotating shaft can be easily achieved by simply lowering the rotating shaft. Furthermore, since the lower end of the cylinder is immersed in the molten metal at the lower limit position of the rotation axis, only the surface of the molten metal surrounded by the cylinder comes into contact with the atmosphere. Therefore, the contact area with the atmosphere becomes smaller, making it less susceptible to the influence of the atmosphere and improving processing efficiency.
この発明を以下図面を参照しながら説明する。
以下の説明において左右とは第１図に向つていう
ものとする。 This invention will be explained below with reference to the drawings.
In the following description, left and right refer to those toward FIG. 1.
図面には、この発明によるシール装置を備えた
アルミニウム溶湯の処理装置が示されている。処
理装置は、アルミニウム溶湯の処理槽１と、処理
槽１の上方に配置された左右に長い上下２本のレ
ール２と、レール２に沿つて左右に走行する走行
移動体３と、走行移動体３に備えられかつ２本の
処理ガス吹込み用回転軸４を有する上下動自在の
昇降体５とからなる。 The drawing shows an apparatus for processing molten aluminum with a sealing device according to the invention. The processing equipment includes a processing tank 1 for molten aluminum, two vertically long rails 2 disposed above the processing tank 1, a running moving body 3 that runs left and right along the rails 2, and a running moving body 3. 3 and a vertically movable elevating body 5 having two rotating shafts 4 for blowing processing gas.
処理槽１は、チツ化ケイ素結合炭化ケイ素製セ
ラミツクスで内張りされた槽本体７と蓋８とより
なり、蓋８に２つの回転軸挿入口９および複数の
ヒータ・カバー挿入口１０が形成されている。回
転軸挿入口９には、上端に外向きフランジ１１ａ
が、下端に内向きフランジ１１ｂがそれぞれ一体
的に設けられた炭化ケイ素製シール部材用受座１
１が取付けられている。内向きフランジ１１ｂ上
面には耐熱ペーパ１４が貼着されている。ヒー
タ・カバー挿入口１０は下方に向つて径が小さく
なつたテーパ状であり、このヒータ・カバー挿入
口１０に、上端部にテーパ状フランジ１２ａが設
けられた有底筒状の炭化ケイ素製ヒータ・カバー
１２が挿入支持されている。ヒータ・カバー１２
の下端部は槽本体７の底部近傍まで伸びており、
このヒータ・カバー１２内に非金属発熱体を有す
る電熱ヒータ１３が入れられ、このヒータ１３に
よりアルミニウム溶湯および槽１内雰囲気が加熱
されるようになつている。 The processing tank 1 consists of a tank body 7 lined with silicon nitride-bonded silicon carbide ceramics and a lid 8, and the lid 8 has two rotating shaft insertion openings 9 and a plurality of heater cover insertion openings 10 formed therein. There is. The rotating shaft insertion port 9 has an outward flange 11a at the upper end.
However, a seat 1 for a seal member made of silicon carbide is integrally provided with an inward flange 11b at the lower end.
1 is installed. Heat-resistant paper 14 is adhered to the upper surface of the inward flange 11b. The heater cover insertion opening 10 has a tapered shape with a diameter decreasing downwardly, and a bottomed cylindrical silicon carbide heater with a tapered flange 12a at the upper end is inserted into the heater cover insertion opening 10. - The cover 12 is inserted and supported. Heater cover 12
The lower end of the tank extends to the vicinity of the bottom of the tank body 7,
An electric heater 13 having a non-metallic heating element is placed inside the heater cover 12, and the molten aluminum and the atmosphere inside the tank 1 are heated by the heater 13.
走行移動体３は、枠１６と、枠１６に取付けら
れかつ上側レール２上を走行する車輪１７と、枠
１６に取付けられかつ車輪１７を駆動するモータ
１８とよりなる。また、走行移動体３は、昇降体
５を上下動させる下向きのパワーシリンダ１９
と、昇降体５を案内する左右一対の垂直ガイド・
バー２０とを備えている。 The traveling vehicle 3 includes a frame 16, wheels 17 attached to the frame 16 and running on the upper rail 2, and a motor 18 attached to the frame 16 and driving the wheels 17. The traveling moving body 3 also includes a downward power cylinder 19 that moves the elevating body 5 up and down.
and a pair of left and right vertical guides that guide the elevating body 5.
bar 20.
昇降体５は、パワーシリンダ１９のピストン・
ロツド１９ａに取付けられており、その左右に設
けられた車輪２１が垂直ガイド・バー２０に沿つ
て転動するようになつている。また昇降体５内に
は回転駆動軸２２が配置されている。回転駆動軸
２２は、昇降体５内に配置されたモータ２３によ
つて、モータ２３の原動軸に取付けられたベルト
軸２４、回転駆動軸２２の上端に取付けられたベ
ルト車２５および両ベルト車２４，２５に掛られ
たベルト２６を介して回転されるようになつてい
る。また、回転駆動軸２２の内部には処理ガス通
路２７が設けられている。この通路２７の上端に
は図示しないがロータリー・ジヨイントを介して
処理ガス供給源からのびた処理ガス供給管が接続
されている。 The elevating body 5 is a piston of a power cylinder 19.
It is attached to a rod 19a, and wheels 21 provided on the left and right sides of the rod 19a roll along a vertical guide bar 20. Further, a rotational drive shaft 22 is arranged within the elevating body 5. The rotary drive shaft 22 is driven by a motor 23 disposed within the elevating body 5, and a belt shaft 24 attached to the driving shaft of the motor 23, a belt pulley 25 attached to the upper end of the rotary drive shaft 22, and both belt pulleys. It is designed to be rotated via a belt 26 that is hung between 24 and 25. Further, a processing gas passage 27 is provided inside the rotary drive shaft 22 . Although not shown, a processing gas supply pipe extending from a processing gas supply source is connected to the upper end of this passage 27 via a rotary joint.
処理ガス吹込み用回転軸４は、回転駆動軸２２
の下端に連結部材３０によつて連結されている。
また、回転軸４はカーボン製であつて、内部に回
転駆動軸２２の通路２７に連通する処理ガス通路
３１が設けられているとともに、下端に円盤状の
気泡状処理ガス放出部材３２が設けられている。
処理ガス通路３１の下端は処理ガス放出部材３２
の下面に開口している。また、処理ガス放出部材
３２の下面には放射状の溝３２ａが形成されてい
る。回転軸４の上端部の周囲には、内径が回転軸
４の外径よりも大きくかつ回転軸４とともに上下
動するチツ化ケイ素製環状シール部材３３が配置
されている。環状シール部材３３は、昇降体５の
前後両壁５ａの下縁部間に設けられた取付枠３４
に、４本のバー３５を介して取付けられている。
バー３５は枠３４に対して上下動自在であり、そ
の上端に取付けられたストツパ３６により下降位
置が決められるようになつている。環状シール部
材３３はバー３５の下端に、バー３５に対して若
干上下動しうるように取付けられている。また、
環状シール部材３３と取付け枠３４との間におい
てバー３５にはコイルバネ３７が装着されてお
り、環状シール部材３３を常に下方に付勢してい
る。環状シール部材３３に、回転軸４に嵌め被せ
られ、かつ回転軸４よりも短いチツ化ケイ素製の
筒体３８の上端部が取付けられている。筒体３８
の上端部外周面には雄ねじが形成されており、こ
の部分を環状シール部材３３の内周面に形成され
た雌ねじにねじ嵌めることにより筒体３８がシー
ル部材３３に着脱自在に取付けられている。 The rotation shaft 4 for blowing processing gas is a rotation drive shaft 22
It is connected to the lower end of the body by a connecting member 30.
Further, the rotating shaft 4 is made of carbon, and is provided with a processing gas passage 31 communicating with the passage 27 of the rotational drive shaft 22 inside, and a disc-shaped bubble-shaped processing gas release member 32 is provided at the lower end. ing.
The lower end of the processing gas passage 31 is connected to a processing gas discharge member 32.
It is open on the bottom side. Furthermore, radial grooves 32a are formed on the lower surface of the processing gas release member 32. An annular seal member 33 made of silicon oxide, which has an inner diameter larger than an outer diameter of the rotary shaft 4 and moves up and down together with the rotary shaft 4, is disposed around the upper end of the rotary shaft 4. The annular seal member 33 is attached to a mounting frame 34 provided between the lower edges of both the front and rear walls 5a of the elevating body 5.
is attached via four bars 35.
The bar 35 is movable up and down relative to the frame 34, and its lowering position can be determined by a stopper 36 attached to its upper end. The annular seal member 33 is attached to the lower end of the bar 35 so as to be able to move up and down slightly relative to the bar 35. Also,
A coil spring 37 is attached to the bar 35 between the annular seal member 33 and the mounting frame 34, and constantly biases the annular seal member 33 downward. An upper end portion of a cylindrical body 38 made of silicon oxide, which is fitted over the rotating shaft 4 and is shorter than the rotating shaft 4, is attached to the annular seal member 33. Cylindrical body 38
A male thread is formed on the outer peripheral surface of the upper end portion, and the cylinder body 38 is detachably attached to the seal member 33 by screwing this portion into a female thread formed on the inner peripheral surface of the annular seal member 33. .
このようなアルミニウム溶湯の処理装置におい
て、容湯の処理を行なう場合、まず走行移動体３
を処理槽１の上方に移動させておく。つぎに、パ
ワーシリンダ１９を作動させて昇降体５を下降さ
せる。すると、回転軸４が下降し、これとともに
環状シール部材３３および筒体３８が下降して回
転軸４および筒体３８が回転軸挿入口９から処理
槽１内に入る。回転軸４、すなわち昇降体５が下
限位置まで下降すると、環状シール部材３３がシ
ール部材用受座１１の内向きフランジ１１ｂに受
けられるとともに、筒体３８の下端部が槽１内の
アルミニウム溶湯内に浸漬される。昇降体５の下
限位置においては、取付け枠３４によりコイルバ
ネ３７が若干圧縮されるので、環状シール部材３
３は下方に付勢され、内向きフランジ１１ｂに密
着させられる。したがつて、環状シール部材３３
と受座１１との間からの大気の侵入が完全に防止
される。また、筒体３８の下端部が溶湯に浸漬さ
れているので、筒体３８の上端開口から侵入する
大気も溶湯表面全体のうち筒体３８に囲まれた部
分にしか接触しない。したがつて、大気の影響を
受けにくく、処理効率が向上する。この状態で、
処理ガス供給源（図示略）から回転駆動軸２２お
よび回転軸４の処理ガス通路２７，３１を経て処
理ガスを放出部材３２に供給するとともに、モー
タ２３により回転駆動軸２２および回転軸４を回
転させると、回転軸４の下端開口から放出部材３
２の下面に放出された処理ガスは、放出部材３２
の回転により生じる遠心力および溝３２ａの作用
によつて、微細な気泡とされ槽１全体に行き渡る
ように分散させられて放出する。この処理ガスに
よつて、アルミニウム溶湯中の水素ガスや非金属
介在物が除去される。 In such a processing apparatus for molten aluminum, when processing the molten metal, first the traveling moving body 3
is moved above the treatment tank 1. Next, the power cylinder 19 is operated to lower the elevating body 5. Then, the rotating shaft 4 is lowered, and the annular seal member 33 and the cylinder 38 are also lowered, and the rotating shaft 4 and the cylinder 38 enter the processing tank 1 through the rotating shaft insertion port 9. When the rotating shaft 4, that is, the elevating body 5 descends to the lower limit position, the annular seal member 33 is received by the inward flange 11b of the seal member seat 11, and the lower end of the cylindrical body 38 is inserted into the molten aluminum in the tank 1. immersed in. At the lower limit position of the elevating body 5, the coil spring 37 is slightly compressed by the mounting frame 34, so that the annular seal member 3
3 is urged downward and brought into close contact with the inward flange 11b. Therefore, the annular seal member 33
Intrusion of the atmosphere from between the seat 11 and the seat 11 is completely prevented. Furthermore, since the lower end of the cylinder 38 is immersed in the molten metal, the atmosphere entering through the opening at the upper end of the cylinder 38 comes into contact only with the part surrounded by the cylinder 38 of the entire surface of the molten metal. Therefore, it is less susceptible to atmospheric influences and processing efficiency is improved. In this state,
Processing gas is supplied from a processing gas supply source (not shown) to the discharge member 32 through the processing gas passages 27 and 31 of the rotational drive shaft 22 and the rotational shaft 4, and the rotational drive shaft 22 and the rotational shaft 4 are rotated by the motor 23. When the release member 3 is released from the lower end opening of the rotating shaft 4,
The processing gas discharged to the lower surface of the discharge member 32
Due to the centrifugal force generated by the rotation of the bubbles and the action of the grooves 32a, the bubbles are dispersed and released into fine bubbles throughout the tank 1. Hydrogen gas and nonmetallic inclusions in the molten aluminum are removed by this processing gas.
上記実施例では、バー３５に、コイルバネ３７
が装着されており、環状シール部材３３を下方に
付勢するようになつているので、槽１内の圧力が
高まつた場合にもシール部材３３と受座１１との
間に隙間が生ずることはないが、コイルバネに代
えてバー３５にウエイトを上下動自在に取付けて
おき、このウエイトで環状シール部材を下方に付
勢するようにしてもよい。また、コイルバネおよ
びウエイトのような付勢手段は必ずしも必要とは
せず、環状シール部材３３が自重により受座１１
に密着するようにしてもよい。 In the above embodiment, the coil spring 37 is attached to the bar 35.
is attached to urge the annular seal member 33 downward, so that even if the pressure inside the tank 1 increases, a gap will not be created between the seal member 33 and the catch seat 11. However, instead of the coil spring, a weight may be attached to the bar 35 so as to be movable up and down, and the annular seal member may be urged downward by this weight. Further, a biasing means such as a coil spring and a weight is not necessarily required, and the annular seal member 33 is moved by its own weight to the seat 11.
It may be made to come in close contact with.
第１図はこの発明のシール装置を備えたアルミ
ニウム溶湯処理装置の正面図、第２図は第１図の
−線にそう拡大断面図である。
１……アルミニウム溶湯処理槽、４……処理ガ
ス吹込み用回転軸、８……蓋、９……回転軸挿入
口、１１……シール部材用受座、３１……回転軸
の処理ガス通路、３３……環状シール部材、３８
……筒体。
FIG. 1 is a front view of a molten aluminum processing apparatus equipped with a sealing device of the present invention, and FIG. 2 is an enlarged sectional view taken along the - line in FIG. 1. DESCRIPTION OF SYMBOLS 1... Aluminum molten metal processing tank, 4... Rotating shaft for blowing processing gas, 8... Lid, 9... Rotating shaft insertion port, 11... Sealing seat for sealing member, 31... Processing gas passage for rotating shaft , 33... annular seal member, 38
...Cylinder.
Claims (1)
た回転軸挿入口９に配置されているシール部材用
受座１１と、内部に処理ガス通路３１を有しかつ
回転軸挿入口９を通つて処理槽１内に出入れされ
る昇降自在の処理ガス吹込み用回転軸４と、回転
軸４の周囲に配置されかつ回転軸４とともに昇降
する環状シール部材３３と、回転軸４に嵌め被せ
られるとともに上端部で環状シール部材３３に取
付けられているセラミツクス製筒体３８とを備え
ており、回転軸４が下限位置にあるときに、環状
シール部材３３が受座１１に密着状態で受けられ
るとともに、筒体３８の下端が溶湯表面よりも下
方にくるようになされている、アルミニウム溶湯
処理槽における回転軸挿入口のシール装置。1 A sealing member seat 11 disposed in a rotary shaft insertion port 9 formed in the lid 8 of the molten aluminum processing tank 1, and a processing gas passage 31 inside the processing gas passage 31 for processing through the rotary shaft insertion port 9. A rotating shaft 4 for blowing process gas that can be moved up and down into and out of the tank 1, an annular seal member 33 that is arranged around the rotating shaft 4 and moves up and down together with the rotating shaft 4, and a ring-shaped seal member 33 that is fitted over the rotating shaft 4 and A ceramic cylinder 38 is attached to the annular seal member 33 at the upper end thereof, and when the rotating shaft 4 is at the lower limit position, the annular seal member 33 is closely received by the catch seat 11. A sealing device for a rotating shaft insertion port in an aluminum molten metal processing tank, in which the lower end of the cylindrical body 38 is located below the surface of the molten metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24663783A JPS60141838A (en) | 1983-12-29 | 1983-12-29 | Device for sealing inserting port for revolving shaft with treating vessel for molten aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24663783A JPS60141838A (en) | 1983-12-29 | 1983-12-29 | Device for sealing inserting port for revolving shaft with treating vessel for molten aluminum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60141838A JPS60141838A (en) | 1985-07-26 |
| JPS6140736B2 true JPS6140736B2 (en) | 1986-09-10 |
Family
ID=17151365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24663783A Granted JPS60141838A (en) | 1983-12-29 | 1983-12-29 | Device for sealing inserting port for revolving shaft with treating vessel for molten aluminum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60141838A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010155255A (en) * | 2008-12-26 | 2010-07-15 | Showa Denko Kk | Molten aluminum treatment apparatus |
| JP2010155257A (en) * | 2008-12-26 | 2010-07-15 | Showa Denko Kk | Molten aluminum treatment apparatus |
| JP2013063472A (en) * | 2013-01-18 | 2013-04-11 | Showa Denko Kk | Molten aluminum treatment apparatus |
| KR20210128386A (en) * | 2019-02-20 | 2021-10-26 | 가부시키가이샤 히다치 인더스트리얼 프로덕츠 | Multistage Centrifugal Fluid Machine |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6146443A (en) * | 1997-06-26 | 2000-11-14 | Eckert; C. Edward | Pre-treated carbon based composite material for molten metal |
| US6299828B1 (en) * | 1997-06-26 | 2001-10-09 | C. Edward Eckert | Shaft design for fluxing molten metal |
| US6162279A (en) * | 1997-06-26 | 2000-12-19 | Eckert; C. Edward | Method for fluxing molten metal using shaft design |
| US6508977B2 (en) | 1997-06-26 | 2003-01-21 | C. Edward Eckert | Reinforced refractory shaft design for fluxing molten metal |
| CN101985698B (en) * | 2010-11-18 | 2012-07-04 | 西北工业大学 | Aluminum alloy vacuum lifting degassing device |
-
1983
- 1983-12-29 JP JP24663783A patent/JPS60141838A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010155255A (en) * | 2008-12-26 | 2010-07-15 | Showa Denko Kk | Molten aluminum treatment apparatus |
| JP2010155257A (en) * | 2008-12-26 | 2010-07-15 | Showa Denko Kk | Molten aluminum treatment apparatus |
| JP2013063472A (en) * | 2013-01-18 | 2013-04-11 | Showa Denko Kk | Molten aluminum treatment apparatus |
| KR20210128386A (en) * | 2019-02-20 | 2021-10-26 | 가부시키가이샤 히다치 인더스트리얼 프로덕츠 | Multistage Centrifugal Fluid Machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60141838A (en) | 1985-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |