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JP3838966B2 - Device for closing crucible melt outlet - Google Patents
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JP3838966B2 - Device for closing crucible melt outlet - Google Patents

Device for closing crucible melt outlet Download PDF

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Publication number
JP3838966B2
JP3838966B2 JP2002336743A JP2002336743A JP3838966B2 JP 3838966 B2 JP3838966 B2 JP 3838966B2 JP 2002336743 A JP2002336743 A JP 2002336743A JP 2002336743 A JP2002336743 A JP 2002336743A JP 3838966 B2 JP3838966 B2 JP 3838966B2
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Japan
Prior art keywords
melt
stopper
crucible
closing
discharge port
Prior art date
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Expired - Fee Related
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JP2002336743A
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Japanese (ja)
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JP2004170003A (en
Inventor
保介 柏
智章 嶋崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Priority to JP2002336743A priority Critical patent/JP3838966B2/en
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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/26Outlets, e.g. drains, siphons; Overflows, e.g. for supplying the float tank, tweels

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Furnace Details (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、坩堝の溶融物排出口の閉止装置に関し、より詳しくは、坩堝の底部に形成される溶融物排出口から溶融物が排出されるのを閉止する坩堝の溶融物排出口の閉止装置に関するものである。
【0002】
【従来の技術】
ガラスや金属等の溶融物を得るのに、例えば、坩堝を架台等に載置した状態で炉内に設置して、坩堝内のガラスや金属等を溶融状態とし、坩堝の底部に形成される溶融物排出口を開口して、溶融物を溶融物排出口から流動排出させる方法がとられることがある。
このとき、任意量の溶融物を取り出した後、溶融物排出口からの溶融物の流動排出を閉止する技術として、従来は、架台等に載置された坩堝の溶融物排出口の下方より、閉栓具を突き当てて、その溶融物排出口を閉栓することで、溶融物排出口を閉じることが提案されている(例えば、特許文献1参照)。
【0003】
【特許文献1】
特公昭37―6954号公報
【0004】
【発明が解決しようとする課題】
ところが、上述のような技術では、坩堝に対する下方からの閉栓具の突き当て時、閉栓具が坩堝と接当する突上げ力で、坩堝が、移動したり或いは傾いて姿勢変更したりして、溶融物排出口が完全に閉止されず、溶融物が流出してしまうおそれがあり、改善の余地が残されている。
【0005】
本発明は、上記実情に鑑みてなされたものであって、その目的は、突上げ力により坩堝が移動したり、その姿勢が変更したりすることなく、坩堝の底部に形成される溶融物排出口を閉止することができる、坩堝の溶融物排出口の閉止装置を提供するところにある。
【0006】
【課題を解決するための手段】
請求項1記載の発明の特徴構成は、坩堝の底部に形成される溶融物排出口に対し、その下方からの押し当てにより、前記溶融物排出口を閉栓可能な閉栓具を設け、
その閉栓具を前記溶融物排出口に押し当て操作する閉栓操作機構と、その閉栓操作機構により前記閉栓具が前記溶融物排出口に押し当てられる際の、前記坩堝への突上げ力を吸収する突上げ力吸収機構とを設けると共に、
前記閉栓具に、前記溶融物排出口の溶融物を冷却可能な冷却機構を備えさせてあるところにある。
【0007】
〔作用効果〕
本特徴構成によれば、閉栓操作機構によって、閉栓具が、坩堝の底部に形成される溶融物排出口に対してその下方から押し当てられて、前記溶融物排出口が閉栓される。
しかも、この際、突上げ力吸収機構により、前記閉栓具が前記溶融物排出口に押し当てられる時の前記坩堝への突上げ力が吸収され、坩堝に突上げ力が作用するおそれがなくなる。よって、突上げ力により坩堝が移動したり、その姿勢が変更したりするおそれを解消することができる。
さらに、このようにして閉栓具により溶融物排出口が閉栓されるばかりか、閉栓具に備えられる冷却機構により、溶融物排出口の溶融物を冷却固化することで、溶融物が流動することなく、確実に、溶融物排出口を閉止することができるようになる。
【0008】
請求項2記載の発明の特徴構成は、上記請求項1の特徴構成に加えて、前記突上げ力吸収機構を設けるに、弾性部材を、前記閉栓具と前記閉栓操作機構の間に介在させてあるところにある。
【0009】
〔作用効果〕
本特徴構成によれば、前記突上げ力吸収機構が、弾性部材を、閉栓具と閉栓操作機構の間に介在させることで設けらるため、簡易な構造でありながら、閉栓具が坩堝に押し当てられて接当される時の突上げ力が吸収されるようになり、有利である。
【0010】
【発明の実施の形態】
以下に本発明の実施の形態を図面に基づいて説明する。
【0011】
図1〜3に、本発明に係る坩堝の溶融物排出口の閉止装置(以下、単に閉止装置と略称する)Aの一実施形態を示す。
【0012】
図1,2に、前記閉止装置Aで溶融物排出口を閉止する坩堝の一例としての白金坩堝1を示してあり、この白金坩堝1について簡単に説明すると、図に示すように、白金坩堝1は、上側の円筒状部分と、下方にかけて径が次第に窄まる漏斗状部分とから形成されている。そして、その漏斗状部分の底部中央が鉛直下方に延出されて管状の溶融物排出口2が形成されている。
【0013】
そして、この白金坩堝1は、図1に示すような坩堝炉(炉の一例)Bの中央部に設けられる架台11に、漏斗状部分を載置させることで、前記溶融物排出口2からの溶融物の排出方向が鉛直方向に沿う鉛直姿勢にて坩堝炉Bに設置されている。尚、この坩堝炉Bは、図に示すように、電熱ヒーター12等を設け、白金坩堝1を加熱や保温自在に構成されている。
【0014】
次に、本発明に係る閉止装置Aについて、図1〜3を参照しながら説明する。
【0015】
この閉止装置Aは、図に示すように、閉栓具20と、閉止操作機構を備える操作装置30と、突上げ力吸収機構とを設けて、操作装置30により閉栓具20を溶融物排出口2に対しその下方から押し当て操作し、その際の白金坩堝1への突上げ力を吸収できるように構成してある。
【0016】
前記閉栓具20は、図1〜3に示すように、その長手方向に沿って、ほぼ管状の金属製の小径部21とほぼ管状の金属製の大径部22とから形成され、前記小径部21の先端側に形成される扁平面21aを、溶融物排出口2の下端に押し当てることで、その溶融物排出口2を前記扁平面21aにより閉塞し、閉止可能に構成してある。
尚、閉栓具20は、このように溶融物排出口2の下端に押し当てることで閉止するものに限らず、溶融物排出口2に対しその下方からの押し当てにより溶融物排出口2を閉止可能なものであればよく、例えば、溶融物排出口2の下端側より押し当て、その溶融物排出口2内に挿入することで、溶融物排出口2を閉止するように構成してあってもよい。
【0017】
そして、図3に詳しく示すように、この閉栓具20には、一例として次のような冷却機構を備えさせてあり、溶融物排出口2の溶融物を冷却することで固化させて、確実に溶融物排出口2を閉止することができるようにしてある。
具体的には、小径部21は、図3に示すように、外筒体24内に内筒体25が内装される二重管構造に形成され、そして、大径部22の後端側に設けられる給水管部27から前記内筒25に冷却水が供給され、その冷却水が、内筒25の先端から排出されて、外筒24と内筒25の間に形成されるUターン水路を経て、大径部22の後端側に設けられる排水管部28から排出されるように構成することで、前記冷却機構を設けてある。このような冷却機構により、冷却水を循環させることで、扁平面21aが冷却され、結果、扁平面21aが溶融物排出口2の下端に押し付けられた状態にて、溶融物排出口2の溶融物を冷却することができるようにしてある。
【0018】
また、大径部22には、その先端と後端との中間部にリング部材29を取り付け固定してあり、そのリング部材29には、後述するように弾性部材Sを取り付け可能な取り付け部29aを、その外周側の周方向に沿って複数形成してある。
【0019】
一方、前記操作装置30は、一例として、図1,2に示すように、昇降ジャッキ31と、その昇降ジャッキ31の上に載置されるスタンド32と、そのスタンド32に固定されると共に一端側が閉栓具20に装着される支持フレーム33とから構成してある。
【0020】
前記昇降ジャッキ31は、操作レバー31aの回動操作により、その上に載置されるスタンド32を昇降自在に構成される。
【0021】
このように昇降ジャッキ31により昇降されるスタンド32には、鉛直方向に沿う姿勢の支柱32aを備えさせてある。この支柱32aには、前記支持フレーム33が固定部材(例えば、クランプ等)34により水平姿勢にて固定されている。尚、この支持フレーム33は、固定部材34の調整ノブ34aの操作で、前記支柱32aへの取り付け高さ位置を上下調整可能に取り付け固定されている。
【0022】
そして、スタンド32に固定される支持フレーム33の一端側には、閉栓具20への装着部材35を備えさせてあり、図1,2,3に例示するように、次のようにして、装着部材35が閉栓具20に装着されている。
【0023】
前記装着部材35は、前後両方とも開口するほぼ筒状で、その外周側には、その周方向に沿って複数の突起部36が形成されている。そして、装着部材35は、その軸方向が支柱32aと平行となる姿勢にて支持フレーム33に固定支持されている。
この装着部材35は、その内周側にて、閉栓具20が鉛直方向に沿って上下動可能に設けてあり、本実施形態では、図1,2に示すように、その内周側に大径部22を挿入した状態にて、前記複数の突起部36と前記複数の取り付け部29aとが互いに対面するように、閉栓具20に装着されている。
【0024】
そして、それら突起部36と取り付け部29a間は各々、スプリング(弾性部材の一例)Sにより連結されており、前記スプリングSにより、リング部材29と装着部材35とは互いに近接するように(つまり、閉栓具20の先端側が装着部材35から遠ざかる方向に)付勢され、通常は、図1に例示するように、リング部材29と装着部材とが接当した状態となるように構成されている。
このようにして連結される閉栓具20と操作装置30の間に介在されるスプリングSが、操作装置30により閉栓具20が溶融物排出口2に押し当てられる際の白金坩堝1への突上げ力を吸収する突上げ力吸収機構として機能する。
【0025】
以上のように構成される閉栓装置Aの動作状況について、以下、簡単に説明する。
【0026】
図1に示すように、溶融物排出口2を閉止する際には、溶融物排出口2の下方鉛直方向に、閉栓具20の扁平面21aが位置するように、閉栓装置Aを配置する。
そして、操作装置30の昇降レバー31aを回動操作することで、昇降ジャッキ31を上昇させ、スタンド32や支持フレーム33を介して、装着部材35を上昇させる。
すると、装着部材35の上昇に応じてスプリングSを介して閉栓具20が上昇され、扁平面21aが溶融物排出口2の下端に押し当てられることで、溶融物排出口2が閉止される。この際、扁平面21aが溶融物排出口2に接当する時の突上げ力は、スプリングSに伝達され吸収されるため、かかる突上げ力が白金坩堝1に作用することなく、白金坩堝1の姿勢は安定に維持されて、溶融物排出口2が閉止される。さらに、白金坩堝1内に溶融物が貯留されているときには、前記冷却機構により、溶融物排出口2の溶融物が冷却され、固化されるため、確実に、溶融物排出口2が閉止される。
【0027】
因みに、このように閉栓具20が溶融物排出口2に押し当てられ、接当する際の突上げ力がスプリングSにより吸収されるため、閉栓具20を押し当てる際の力加減を厳密に調整する必要がなくなり、簡易に且つ迅速に溶融物排出口2を閉止することが可能となる。しかも、閉栓具20を溶融物排出口2に押し当てた状態が、スプリングSによる付勢力により確実に維持されて、閉止状態を安定に長期間維持することができ、好適である。
【0028】
尚、操作装置30は、上述のように閉栓具20を上昇操作させるだけでなく、逆の操作により操作レバー31aを逆方向に回動させれば、閉栓具20を下降操作させ、溶融物排出口2を開状態とすることができ、簡易に、溶融物排出口2の開閉操作を繰り返し行うことができ、利便である。
溶融物排出中に閉栓するのに、流下物を受ける受皿40を設けることによって、大径部22と装着部材35との間やスプリングSに流下物が掛かるのを防止して、閉栓具20の上下動を維持できるようにしてある。
【0029】
〔別実施形態〕
以下に他の実施形態を説明する。
〈1〉 本発明は、先の実施形態で説明した白金坩堝に限るものではなく、例えば石英やその他のセラミック製などからなる坩堝にも適用でき、また、坩堝の形状についても、先の実施形態で例示したものに限定されるものではなく、溶融物排出口が底部に形成されているものであれば適用可能である。
〈2〉 また、先の実施形態では、閉栓操作機構として、手動で操作するものを例示したが、それらは、駆動装置等により自動操作されるものでも勿論よい。そして、以上の実施形態で説明した操作装置30は一例であり、閉栓操作機構は、閉栓具を溶融物排出口に押し当て操作するものであれば如何なる形態のものでもよい。
〈3〉 尚、突上げ力吸収機構は、先の第1実施形態で例示した構成に限らず、例えば、閉栓具自体に備えさせてあってもよく、閉栓操作機構により閉栓具が溶融物排出口に押し当てられる際の坩堝への突上げ力を吸収可能であれば、如何なる構成でもよい。
【図面の簡単な説明】
【図1】本発明の一実施形態を示す断面図
【図2】本発明の一実施形態を示す断面図
【図3】閉栓具の冷却機構を示す要部図
【符号の説明】
1 坩堝
2 溶融物排出口
20 閉栓具
A 閉止装置
S 弾性部材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crucible melt outlet closing device, and more particularly to a crucible melt outlet closing device for closing a melt from a melt outlet formed at the bottom of a crucible. It is about.
[0002]
[Prior art]
In order to obtain a molten material such as glass or metal, for example, the crucible is placed in a furnace in a state where it is placed on a stand or the like, and the glass or metal in the crucible is melted and formed at the bottom of the crucible. A method may be used in which the melt discharge port is opened and the melt is fluidly discharged from the melt discharge port.
At this time, after taking out an arbitrary amount of the melt, as a technique for closing the flow discharge of the melt from the melt discharge port, conventionally, from below the melt discharge port of the crucible placed on a stand or the like, It has been proposed to close the melt discharge port by abutting a stopper and closing the melt discharge port (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Examined Patent Publication No. 37-6654 [0004]
[Problems to be solved by the invention]
However, in the technique as described above, when the stopper is abutted against the crucible from below, the crucible moves or tilts and changes its posture with the thrust force that the stopper comes into contact with the crucible, The melt outlet is not completely closed, and the melt may flow out, leaving room for improvement.
[0005]
The present invention has been made in view of the above circumstances, and an object of the present invention is to discharge the melt formed at the bottom of the crucible without the crucible moving or changing its posture by the pushing-up force. It is an object of the present invention to provide a crucible melt outlet closing device capable of closing an outlet.
[0006]
[Means for Solving the Problems]
The characteristic configuration of the invention according to claim 1 is provided with a stopper capable of closing the melt outlet by pressing against the melt outlet formed at the bottom of the crucible from below.
A stopper operating mechanism that presses the stopper against the melt outlet, and absorbs the pushing force to the crucible when the stopper is pressed against the melt outlet by the stopper operation mechanism. While providing a thrust absorption mechanism,
The stopper is provided with a cooling mechanism capable of cooling the melt at the melt outlet.
[0007]
[Function and effect]
According to this characteristic configuration, the closure device is pressed against the melt outlet formed at the bottom of the crucible from below by the closure operation mechanism, thereby closing the melt outlet.
Moreover, at this time, the push-up force absorbing mechanism absorbs the push-up force applied to the crucible when the stopper is pressed against the melt outlet, and there is no possibility that the push-up force acts on the crucible. Therefore, the possibility that the crucible may move or change its posture due to the thrusting force can be eliminated.
Furthermore, not only the melt discharge port is closed by the plugging device in this way, but also the melt at the melt discharge port is cooled and solidified by the cooling mechanism provided in the plugging device, so that the melt does not flow. The melt outlet can be closed reliably.
[0008]
According to a second aspect of the invention, in addition to the first aspect of the invention, the push-up force absorbing mechanism is provided with an elastic member interposed between the stopper and the closing operation mechanism. There is somewhere.
[0009]
[Function and effect]
According to this characteristic configuration, since the push-up force absorbing mechanism is provided by interposing the elastic member between the stopper and the stopper operating mechanism, the stopper is pushed to the crucible while having a simple structure. This is advantageous because the push-up force at the time of being applied and touched is absorbed.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
1 to 3 show an embodiment of a crucible melt outlet closing device (hereinafter simply referred to as a closing device) A according to the present invention.
[0012]
1 and 2 show a platinum crucible 1 as an example of a crucible for closing a melt discharge port by the closing device A. The platinum crucible 1 will be briefly described. As shown in FIG. Is formed of an upper cylindrical portion and a funnel-shaped portion whose diameter gradually narrows downward. And the bottom center of the funnel-shaped part is extended vertically downward, and the tubular melt discharge port 2 is formed.
[0013]
And this platinum crucible 1 places the funnel-shaped part on the mount 11 provided in the center part of the crucible furnace (an example of a furnace) B as shown in FIG. It is installed in the crucible furnace B in a vertical posture where the discharge direction of the melt is along the vertical direction. As shown in the figure, the crucible furnace B is provided with an electric heater 12 and the like so that the platinum crucible 1 can be heated and kept warm.
[0014]
Next, the closing device A according to the present invention will be described with reference to FIGS.
[0015]
As shown in the figure, the closing device A is provided with a stopper 20, an operating device 30 having a closing operation mechanism, and a push-up force absorbing mechanism, and the operating device 30 removes the stopper 20 from the melt outlet 2. For this, the pushing operation is performed from below, and the push-up force to the platinum crucible 1 at that time can be absorbed.
[0016]
As shown in FIGS. 1 to 3, the stopper 20 is formed of a substantially tubular metal small-diameter portion 21 and a substantially tubular metal large-diameter portion 22 along the longitudinal direction thereof. The flat surface 21a formed on the front end side of 21 is pressed against the lower end of the melt discharge port 2 so that the melt discharge port 2 is closed by the flat surface 21a and can be closed.
The stopper 20 is not limited to being closed by pressing against the lower end of the melt discharge port 2 as described above, and the melt discharge port 2 is closed by pressing the melt discharge port 2 from below. What is possible is, for example, configured to close the melt discharge port 2 by being pressed from the lower end side of the melt discharge port 2 and inserted into the melt discharge port 2. Also good.
[0017]
As shown in detail in FIG. 3, the stopper 20 is provided with the following cooling mechanism as an example, and the melt at the melt outlet 2 is solidified by cooling, so that The melt outlet 2 can be closed.
Specifically, as shown in FIG. 3, the small diameter portion 21 is formed in a double tube structure in which an inner cylinder 25 is housed in an outer cylinder 24, and on the rear end side of the large diameter portion 22. Cooling water is supplied to the inner cylinder 25 from the provided water supply pipe portion 27, and the cooling water is discharged from the tip of the inner cylinder 25 to form a U-turn water channel formed between the outer cylinder 24 and the inner cylinder 25. Then, the cooling mechanism is provided by being configured to be discharged from the drain pipe portion 28 provided on the rear end side of the large diameter portion 22. By circulating the cooling water by such a cooling mechanism, the flat surface 21 a is cooled, and as a result, the melt discharge port 2 is melted in a state where the flat surface 21 a is pressed against the lower end of the melt discharge port 2. The thing can be cooled.
[0018]
Further, a ring member 29 is attached and fixed to an intermediate portion between the front end and the rear end of the large diameter portion 22, and an attachment portion 29 a to which an elastic member S can be attached as will be described later. Are formed along the circumferential direction on the outer peripheral side.
[0019]
On the other hand, as shown in FIGS. 1 and 2, the operating device 30 includes an elevating jack 31, a stand 32 placed on the elevating jack 31, a fixed end to the stand 32, and one end side of the operating device 30. It is comprised from the support frame 33 with which the closing tool 20 is mounted | worn.
[0020]
The elevating jack 31 is configured such that the stand 32 placed thereon can be raised and lowered by a turning operation of the operation lever 31a.
[0021]
In this way, the stand 32 that is lifted and lowered by the lifting jack 31 is provided with a support column 32a in a posture along the vertical direction. The support frame 33 is fixed to the support column 32a by a fixing member (for example, a clamp) 34 in a horizontal posture. The support frame 33 is mounted and fixed so that the height of the mounting to the support column 32a can be adjusted up and down by operating the adjustment knob 34a of the fixing member 34.
[0022]
An attachment member 35 to the stopper 20 is provided on one end side of the support frame 33 fixed to the stand 32. As shown in FIGS. A member 35 is attached to the stopper 20.
[0023]
The mounting member 35 has a substantially cylindrical shape that is open at both the front and rear sides, and a plurality of protrusions 36 are formed on the outer peripheral side along the circumferential direction. The mounting member 35 is fixedly supported by the support frame 33 in such a posture that its axial direction is parallel to the support column 32a.
The mounting member 35 is provided on its inner peripheral side so that the stopper 20 can be moved up and down along the vertical direction. In this embodiment, as shown in FIGS. In the state where the diameter portion 22 is inserted, the plurality of protrusions 36 and the plurality of attachment portions 29a are attached to the stopper 20 so as to face each other.
[0024]
The projecting portions 36 and the attachment portions 29a are each connected by a spring (an example of an elastic member) S so that the ring member 29 and the mounting member 35 are brought close to each other by the spring S (that is, The tip end side of the closure device 20 is biased (in a direction away from the mounting member 35), and normally, as illustrated in FIG. 1, the ring member 29 and the mounting member are in contact with each other.
The spring S interposed between the stopper 20 thus connected and the operating device 30 is pushed up to the platinum crucible 1 when the stopper 20 is pressed against the melt outlet 2 by the operating device 30. It functions as a push-up force absorbing mechanism that absorbs force.
[0025]
The operation status of the closing device A configured as described above will be briefly described below.
[0026]
As shown in FIG. 1, when closing the melt outlet 2, the closure device A is arranged so that the flat surface 21 a of the closure 20 is positioned in the vertical direction below the melt outlet 2.
And the raising / lowering jack 31 is raised by rotating the raising / lowering lever 31 a of the operating device 30, and the mounting member 35 is raised via the stand 32 and the support frame 33.
Then, the stopper 20 is raised via the spring S according to the rise of the mounting member 35, and the flat surface 21 a is pressed against the lower end of the melt discharge port 2, thereby closing the melt discharge port 2. At this time, the push-up force when the flat surface 21 a contacts the melt discharge port 2 is transmitted to and absorbed by the spring S, so that the push-up force does not act on the platinum crucible 1. Is maintained stably, and the melt outlet 2 is closed. Furthermore, when the melt is stored in the platinum crucible 1, the melt at the melt discharge port 2 is cooled and solidified by the cooling mechanism, so that the melt discharge port 2 is reliably closed. .
[0027]
By the way, the stopper 20 is pressed against the melt outlet 2 in this way, and the push-up force at the time of contact is absorbed by the spring S, so the force adjustment when pressing the stopper 20 is adjusted strictly. Therefore, the melt outlet 2 can be closed easily and quickly. Moreover, the state in which the stopper 20 is pressed against the melt outlet 2 is reliably maintained by the urging force of the spring S, and the closed state can be stably maintained for a long period of time.
[0028]
Note that the operating device 30 not only causes the closing tool 20 to be raised as described above, but if the operating lever 31a is rotated in the reverse direction by the reverse operation, the closing tool 20 is lowered to discharge the melt. The outlet 2 can be opened, and the melt discharge port 2 can be easily opened and closed repeatedly, which is convenient.
In order to close the plug during the discharge of the melt, by providing a receiving tray 40 for receiving the flowing-down material, it is possible to prevent the flowing-down material from being applied between the large diameter portion 22 and the mounting member 35 and the spring S. The vertical movement can be maintained.
[0029]
[Another embodiment]
Other embodiments will be described below.
<1> The present invention is not limited to the platinum crucible described in the previous embodiment, and can be applied to a crucible made of, for example, quartz or other ceramics. The shape of the crucible is also applicable to the previous embodiment. However, the present invention is not limited to those exemplified above, and any melt outlet can be applied as long as the melt outlet is formed at the bottom.
<2> In the previous embodiment, the manual operation was exemplified as the closing operation mechanism, but it may be automatically operated by a drive device or the like. The operation device 30 described in the above embodiment is an example, and the closing operation mechanism may have any form as long as the closing device is pressed against the melt outlet.
<3> The push-up force absorbing mechanism is not limited to the configuration exemplified in the first embodiment, and may be provided in the stopper itself, for example. Any structure may be used as long as it can absorb the pushing force to the crucible when pressed against the outlet.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an embodiment of the present invention. FIG. 2 is a sectional view showing an embodiment of the invention. FIG. 3 is a main part view showing a cooling mechanism of a stopper.
1 Crucible 2 Melt outlet 20 Closure A Closing device S Elastic member

Claims (2)

坩堝の底部に形成される溶融物排出口に対し、その下方からの押し当てにより、前記溶融物排出口を閉栓可能な閉栓具を設け、
その閉栓具を前記溶融物排出口に押し当て操作する閉栓操作機構と、その閉栓操作機構により前記閉栓具が前記溶融物排出口に押し当てられる際の、前記坩堝への突上げ力を吸収する突上げ力吸収機構とを設けると共に、
前記閉栓具に、前記溶融物排出口の溶融物を冷却可能な冷却機構を備えさせてある坩堝の溶融物排出口の閉止装置。
For the melt outlet formed at the bottom of the crucible, a stopper is provided that can close the melt outlet by pressing from below.
A stopper operating mechanism that presses the stopper against the melt outlet, and absorbs the pushing force to the crucible when the stopper is pressed against the melt outlet by the stopper operation mechanism. While providing a thrust absorption mechanism,
A device for closing a melt discharge port of a crucible, wherein the closure tool is provided with a cooling mechanism capable of cooling the melt at the melt discharge port.
前記突上げ力吸収機構を設けるに、弾性部材を、前記閉栓具と前記閉栓操作機構の間に介在させてある請求項1記載の坩堝の溶融物排出口の閉止装置。The apparatus for closing a melt outlet of a crucible according to claim 1, wherein an elastic member is interposed between the stopper and the closing operation mechanism to provide the push-up force absorbing mechanism.
JP2002336743A 2002-11-20 2002-11-20 Device for closing crucible melt outlet Expired - Fee Related JP3838966B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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US20180155231A1 (en) * 2016-12-07 2018-06-07 Corning Incorporated Flow stopper for a bottom delivery melter
US12054418B2 (en) * 2020-09-30 2024-08-06 Owens-Brockway Glass Container Inc. Fluid-cooled needle for molten material flow control
CN111457724B (en) * 2020-03-31 2021-08-06 宁波可可磁业股份有限公司 Vacuum smelting furnace for neodymium-iron-boron alloy and using method thereof
CN113336417B (en) * 2021-05-22 2022-12-23 盛吉盛精密制造(绍兴)有限公司 Quartz glass continuous melting furnace
CN113970248B (en) * 2021-11-15 2023-12-12 江西省君鑫贵金属科技材料有限公司 Burn and cultivate device that can be used to purification recovery
CN117263497B (en) * 2023-09-21 2025-09-23 成都光明光电有限责任公司 Glass liquid blocking device and blocking method thereof

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