JP2011157249A - Tweel for controlling amount of molten glass and method for feeding molten glass - Google Patents

Tweel for controlling amount of molten glass and method for feeding molten glass Download PDF

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JP2011157249A
JP2011157249A JP2010022452A JP2010022452A JP2011157249A JP 2011157249 A JP2011157249 A JP 2011157249A JP 2010022452 A JP2010022452 A JP 2010022452A JP 2010022452 A JP2010022452 A JP 2010022452A JP 2011157249 A JP2011157249 A JP 2011157249A
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molten glass
concave groove
wheel
float bath
groove
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JP5482255B2 (en
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Genichi Iga
元一 伊賀
Tetsushi Takiguchi
哲史 瀧口
Nobuyuki Ban
信之 伴
Michito Sasaki
道人 佐々木
Toshihide Murakami
敏英 村上
Kenichi Masuda
健一 増田
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AGC Inc
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Asahi Glass Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a tweel for controlling the amount of molten glass capable of preventing coagulates adhering to the tweel from flowing into that part of the molten glass which forms a product to cause foreign matter contamination. <P>SOLUTION: There is provided a tweel 1 for controlling the amount of molten glass which is height-adjustably disposed on the molten glass feed part 8 of a float bath 3 and, when its height is changed, controls the amount of the molten glass to be fed to the float bath 3, wherein a recessed groove 6 that collects matter flowing down along the side surface 15 on the float bath side is formed in the proximity of the lower edge of the side surface 15 on the tweel 1 float bath side, and the recessed groove 6 is formed so that it crosses the side surface 15 on the float bath side and is inclined downward in relation to the horizontal direction toward at least one edge. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、フロートガラス製造装置に溶融ガラスを供給する際の溶融ガラス調量用ツィール、および該ツィールを使用する溶融ガラスの供給方法に関する。   The present invention relates to a molten glass metering tool for supplying molten glass to a float glass manufacturing apparatus, and a molten glass supply method using the wheel.

フロートガラスは、ガラス原料を溶融槽にて加熱し溶解した溶融ガラスをフロートガラス製造装置の溶融ガラス供給部に送給し、該溶融ガラス供給部に配置したツィールで溶融ガラス量を調節してフロートバスの溶融錫上に供給しリボン状ガラスに成形される（特許文献１参照）。リボン状ガラスは冷却された後、幅方向両端部が切除され、残りの幅方向中央部が製品となる。   Float glass is a float glass that is heated in a melting tank and melted, and the molten glass is fed to a molten glass supply unit of a float glass manufacturing apparatus, and the amount of molten glass is adjusted by a wheel disposed in the molten glass supply unit. It is supplied onto molten tin in a bath and formed into ribbon-like glass (see Patent Document 1). After the ribbon-shaped glass is cooled, both end portions in the width direction are cut off, and the remaining center portion in the width direction becomes a product.

図６は上記溶融ガラス供給部を概略に示したもので、溶融ガラス供給部２８に送給されてきた溶融ガラスは、ツィール２１で溶融ガラス量を調節してフロートバス２３に供給される。このツィール２１は、シリカガラスセラミック（溶融シリカ）などの耐熱材料で作製された矩形板状体で、溶融ガラス供給部２８に昇降可能に設置されており、その高さを変えることによって溶融ガラス供給量が調節できる。   FIG. 6 schematically shows the molten glass supply unit. The molten glass fed to the molten glass supply unit 28 is supplied to the float bath 23 with the amount of molten glass adjusted by the wheel 21. The wheel 21 is a rectangular plate made of a heat-resistant material such as silica glass ceramic (fused silica), and is installed on the molten glass supply unit 28 so as to be movable up and down. By changing its height, molten glass is supplied. The amount can be adjusted.

この場合、ツィール２１のフロートバス２３と反対側の下部側面は、図６に示すように溶融ガラス３７に接触しているが、フロートバス２３側の側面３５は、囲い壁２７やブロック３６で密閉構造になっているフロートバス２３の雰囲気に曝される。このフロートバス２３の雰囲気には、例えば、溶融錫の酸化を防止するために導入される不活性ガス（Ｎ２ガス）や、溶融錫から揮散する錫、蒸発しやすい溶融ガラス成分などが存在する。このため、上記ツィール２１のバス側側面３５には、錫、錫化合物、ガラスの揮散凝集物など（以下、凝集物とする）が付着する。そして、ツィール２１のバス側側面３５は、溶融ガラスに近く高温であるため、付着した凝集物は流動しやすい。 In this case, the lower side surface of the wheel 21 opposite to the float bath 23 is in contact with the molten glass 37 as shown in FIG. 6, but the side surface 35 on the float bath 23 side is hermetically sealed by the enclosure wall 27 and the block 36. It is exposed to the atmosphere of the float bath 23 having a structure. The atmosphere of the float bath 23 includes, for example, an inert gas (N 2 gas) introduced to prevent oxidation of molten tin, tin volatilized from molten tin, a molten glass component that easily evaporates, and the like. . For this reason, tin, a tin compound, volatilized aggregates of glass, and the like (hereinafter referred to as aggregates) adhere to the bus side surface 35 of the wheel 21. And since the bath side surface 35 of the Tiel 21 is close to the molten glass and is at a high temperature, the adhered aggregates easily flow.

特開２００８−５３９１５１号公報JP 2008-539151 A

上記ツィールのフロートバス側の側面に付着した凝集物は、高温の雰囲気に曝されるとともにツィールの側面が鉛直面であることから、付着量の増加に伴ってツィールの側面を流下してフロートバスに供給される溶融ガラス上に流下し、溶融ガラスの製品となる部分に混入して異物となる場合がある。このような異物は、製品において欠点となり、歩留を低下させる。   Agglomerates adhering to the side surface of the above-mentioned wheel on the float bath side are exposed to a high-temperature atmosphere and the side surface of the wheel is a vertical surface. It flows down on the molten glass supplied to the glass and may be mixed into a part that becomes a product of the molten glass to become a foreign substance. Such a foreign substance becomes a defect in the product and reduces the yield.

本発明は、上記課題に鑑みてなされたもので、ツィールに付着した凝集物が流下して溶融ガラスの製品となる部分に異物として混入するのを防ぐことができる溶融ガラス調量用ツィールを提供することを目的とする。   The present invention has been made in view of the above problems, and provides a molten glass metering tool that can prevent agglomerates adhering to the wheel from flowing down and mixing as a foreign substance into a molten glass product. The purpose is to do.

本発明は、フロートバスの溶融ガラス供給部に昇降可能に設置され、高さを変えることにより前記フロートバスに供給する溶融ガラス量を調節するための溶融ガラス調量用ツィールであって、
該ツィールのフロートバス側側面の下端近傍に、該フロートバス側側面を流下する流下物を収集する凹溝が設けられており、
該凹溝は、前記フロートバス側側面を横切り、かつ少なくとも一方の端部に向かって水平方向に対して下方に傾斜するように、形成されている溶融ガラス調量用ツィール（以下、本発明のツィールとする）を提供する。 The present invention is a molten glass metering tool for adjusting the amount of molten glass to be supplied to the float bath by changing the height, which is installed so as to be movable up and down in the molten glass supply section of the float bath,
In the vicinity of the lower end of the float bath side surface of the wheel, a concave groove for collecting the flowing-down material flowing down the float bath side surface is provided,
The concave groove is formed of a molten glass metering wheel (hereinafter referred to as the present invention) so as to cross the side surface of the float bath and to incline downward with respect to the horizontal direction toward at least one end. Twill).

本発明によれば、ツィールに付着した凝集物が流下して溶融ガラスの製品となる部分に異物として混入するのを防ぐことができる溶融ガラス調量用ツィールを提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the molten glass metering tool which can prevent that the aggregate adhering to the wheel flows down and mixes as a foreign material in the part used as the product of a molten glass can be provided.

本発明の好ましい実施形態に係る溶融ガラス供給装置の断面説明図。Cross-sectional explanatory drawing of the molten glass supply apparatus which concerns on preferable embodiment of this invention. 本発明の好ましい実施形態に係るツィールの斜視図。1 is a perspective view of a wheel according to a preferred embodiment of the present invention. 図２のＡ−Ａ部における断面図。Sectional drawing in the AA part of FIG. 本発明の他の実施形態に係るツィールの部分断面図。The fragmentary sectional view of the tiel concerning other embodiments of the present invention. 本発明の他の実施形態に係るツィールの側面図。The side view of the wheel which concerns on other embodiment of this invention. 従来の溶融ガラス供給装置の斜視図。The perspective view of the conventional molten glass supply apparatus.

以下、本発明の実施形態について図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１は、本発明の好ましい実施形態に係る溶融ガラス供給装置の断面説明図である。図１に示すように、溶融ガラス１７は供給パイプ２によってフロートガラス製造装置の溶融ガラス供給部８に送給される。そして、溶融ガラス供給部８に送給された溶融ガラス１７は、該溶融ガラス供給部８に設置したツィール１で溶融ガラス量が調節され、一定幅の溶融ガラス流となってリップタイル１４からフロートバス３の溶融錫４上に供給され、ガラスリボン５に成形される。この場合、溶融ガラス供給部８で形成された一定幅の溶融ガラス流は、そのままフロートバス３に供給されガラスリボン５に成形されるため、溶融ガラス流の幅方向端部はガラスリボン５の幅方向端部（製品以外の部分）となり、溶融ガラス流の幅方向中央部（以下、「主要部」ともいう）はガラスリボン５の幅方向中央部（製品となる部分）となる。   FIG. 1 is a cross-sectional explanatory view of a molten glass supply apparatus according to a preferred embodiment of the present invention. As shown in FIG. 1, the molten glass 17 is fed by the supply pipe 2 to the molten glass supply unit 8 of the float glass manufacturing apparatus. Then, the molten glass 17 fed to the molten glass supply unit 8 is adjusted in the amount of molten glass by the wheel 1 installed in the molten glass supply unit 8 and becomes a molten glass flow having a certain width and floats from the lip tile 14. It is supplied onto the molten tin 4 of the bath 3 and formed into a glass ribbon 5. In this case, since the molten glass flow having a constant width formed by the molten glass supply unit 8 is supplied to the float bath 3 as it is and formed into the glass ribbon 5, the end in the width direction of the molten glass flow is the width of the glass ribbon 5. It becomes a direction end portion (a portion other than the product), and a width direction center portion (hereinafter, also referred to as “main portion”) of the molten glass flow becomes a width direction center portion (a portion to be a product) of the glass ribbon 5.

上記ツィール１は、図２に示すようにシリカガラスセラミックなどの耐熱材料で作製された矩形板状体で、上部に取り付けた金具９を介して吊り棒１０で吊持され、フロートバス３の溶融ガラス供給部８に側面を前記供給パイプ２の開口部に対向して上下可能に設置される。このツィール１は、供給パイプ２の開口部の横幅および溶融ガラス供給部８の幅とほぼ同じ幅を有し、上下動させて高さを変えることによってフロートバス３に供給する溶融ガラス量を調節できる。また、最下位置に下げることによってフロートバス３への溶融ガラス１７の供給を停止させることもできる。   The above-described wheel 1 is a rectangular plate made of a heat-resistant material such as silica glass ceramic as shown in FIG. 2, and is suspended by a suspension rod 10 via a metal fitting 9 attached to the upper portion, so that the float bath 3 is melted. A side surface of the glass supply unit 8 is installed to face the opening of the supply pipe 2 so as to be vertically movable. The wheel 1 has a width substantially equal to the width of the opening of the supply pipe 2 and the width of the molten glass supply unit 8 and adjusts the amount of molten glass supplied to the float bath 3 by moving up and down to change the height. it can. Moreover, supply of the molten glass 17 to the float bath 3 can also be stopped by lowering to the lowest position.

上記ツィール１を供給パイプ２の開口部に対向して設ける場合、該ツィール１と開口部との間隙Ｍを狭くするために、ツィール１は供給パイプ２の開口部にできるだけ近接して設けることが好ましい。上記間隙Ｍは３０ｍｍ以下が好ましく、より好ましくは２０ｍｍ以下である。この間隙Ｍが大きいと、溶融ガラス供給部８の溶融ガラス１７が外気と接触する面積が増大することによって冷却されたり、あるいは一部ガラス成分の蒸発を招くため好ましくない。   When the wheel 1 is provided opposite to the opening of the supply pipe 2, the wheel 1 is provided as close as possible to the opening of the supply pipe 2 in order to narrow the gap M between the wheel 1 and the opening. preferable. The gap M is preferably 30 mm or less, more preferably 20 mm or less. If the gap M is large, the molten glass 17 of the molten glass supply unit 8 is cooled by increasing the area in contact with the outside air, or part of the glass component is evaporated, which is not preferable.

このように溶融ガラス供給部８に設置されたツィール１において、供給パイプ２に対向する側の側面は溶融ガラス１７と接触しているが、フロートバス側側面（以下、バス側側面とする）１５は、前記したように囲い壁７やブロック１６で密閉構造になっているフロートバス３の雰囲気に曝される。このため該バス側側面１５に凝集物が付着し、さらに該溶融ガラス供給部８が１０００〜１４００℃の高温であるために、付着した凝集物が流下する。   Thus, in the wheel 1 installed in the molten glass supply unit 8, the side surface on the side facing the supply pipe 2 is in contact with the molten glass 17, but the float bath side surface (hereinafter referred to as the bus side surface) 15. Is exposed to the atmosphere of the float bath 3 having a sealed structure with the surrounding wall 7 and the block 16 as described above. For this reason, aggregates adhere to the bath side surface 15, and the molten glass supply unit 8 has a high temperature of 1000 to 1400 ° C., so the adhered aggregates flow down.

本発明は、流下する凝集物がフロートバス３に供給する溶融ガラス流の主要部に流下し混入するのを防止するために、ツィール１のバス側側面１５の下端近傍に、該バス側側面１５を流下する流下物を収集するための凹溝を設け、前記流下物を該凹溝で収集して該凹溝の端部に導き、該凹溝の端部から溶融ガラス流の幅方向端部に流下させる。このため、前記凹溝は前記バス側側面１５を横切って、少なくとも一方の端部に向かって水平方向に対して下方に傾斜するように形成される。   In the present invention, in order to prevent the agglomerates flowing down from flowing into the main part of the molten glass flow supplied to the float bath 3, the bus side surface 15 is located near the lower end of the bus side surface 15 of the wheel 1. A concave groove is provided for collecting the flowing-down material flowing down, and the falling material is collected in the concave groove and guided to the end of the concave groove, and the widthwise end of the molten glass flow from the end of the concave groove To flow down. Therefore, the concave groove is formed so as to incline downward with respect to the horizontal direction toward at least one end portion across the bus side surface 15.

図２は、本発明の好ましい実施形態のツィールの斜視図である。本例のツィール１は、図示するようにツィール１のバス側側面１５の下端近傍に、該バス側側面１５を流下する流下物を収集するための凹溝６が右端から左端に向かって水平方向に対して傾斜角度θ１の下り傾斜で形成されている。凹溝６がバス側側面１５の下端近傍の右端から左端まで形成されているので、バス側側面１５に付着した凝集物はバス側側面１５を流下し該凹溝６に流入して収集された後、該凹溝６内を前記下り傾斜によって左端に流動し、該左端から溶融ガラス流の幅方向端部に流下される。その際、ツィール１の幅が溶融ガラス供給部８の幅とほぼ同じであるため、ツィール１の左端から流下した流下物は溶融ガラス流の左端に流下し、そのままフロートバス３に供給される。その結果、前記流下物が混入した溶融ガラス流の左端部分は、フロートバス３で成形されるガラスリボン５の左端部に混入し、該端部は切断してカレット（屑ガラス）にされるため、ガラスリボン５の主要部、すなわち製品化される部分には混入しない。   FIG. 2 is a perspective view of the wheel of a preferred embodiment of the present invention. As shown in the figure, the wheel 1 has a groove 6 in the horizontal direction from the right end to the left end in the vicinity of the lower end of the bus side surface 15 of the wheel 1 for collecting the flowing-down material flowing down the bus side surface 15. Is formed with a downward inclination at an inclination angle θ1. Since the concave groove 6 is formed from the right end to the left end near the lower end of the bus side surface 15, the agglomerates adhering to the bus side surface 15 flow down the bus side surface 15 and flow into the concave groove 6 and are collected. After that, it flows in the concave groove 6 to the left end by the downward slope, and flows down from the left end to the end in the width direction of the molten glass flow. At that time, since the width of the wheel 1 is substantially the same as the width of the molten glass supply unit 8, the falling material flowing down from the left end of the wheel 1 flows down to the left end of the molten glass flow and is supplied to the float bath 3 as it is. As a result, the left end portion of the molten glass flow mixed with the flowing-down material is mixed into the left end portion of the glass ribbon 5 formed by the float bath 3, and the end portion is cut into cullet (scrap glass). The main part of the glass ribbon 5, that is, the part to be manufactured is not mixed.

ここで、凹溝６を設けるバス側側面１５の下端近傍とは、バス側側面１５の下部で溶融ガラスに接触している部分の直上の領域を指し、溶融ガラスに触れない限りできるだけバス側側面１５の下方が好ましい。   Here, the vicinity of the lower end of the bus-side side surface 15 provided with the concave groove 6 refers to a region immediately below the portion in contact with the molten glass at the lower part of the bus-side side surface 15 and the bus-side side surface as much as possible unless touching the molten glass. Below 15 is preferred.

上記ツィール１において、上記凹溝６（凹溝６の延在方向）の水平方向に対する傾斜角度θ１としては、２〜３０度が好ましく、３〜１０度がより好ましく、４〜７度が最も好ましい。θ１が２度より小さいと、凹溝６に収集された流下物がその流動抵抗もあって端部まで円滑に流動しないで凹溝６内に停滞し、やがて凹溝６から溢れ出て溶融ガラス流の中央域に位置する主要部に流下するので好ましくない。一方、θ１が３０度より大きいと、凹溝６に収集された流下物の流動性はよくなるが、バス側側面１５の上り側（図２における右側）の凹溝６の位置がθ１に比例して高くなるため、この部分の凹溝６の下方に流下物を収集できない領域が大きく生じるので好ましくない。この凹溝６の傾斜角度θ１は、他の実施形態においても同じである。   In the wheel 1, the inclination angle θ <b> 1 with respect to the horizontal direction of the groove 6 (extending direction of the groove 6) is preferably 2 to 30 degrees, more preferably 3 to 10 degrees, and most preferably 4 to 7 degrees. . If θ1 is smaller than 2 degrees, the falling material collected in the groove 6 also has flow resistance and does not flow smoothly to the end, but stays in the groove 6 and eventually overflows from the groove 6 and is molten glass. Since it flows down to the main part located in the center area of a flow, it is not preferable. On the other hand, if θ1 is larger than 30 degrees, the flowability of the flowed material collected in the groove 6 is improved, but the position of the groove 6 on the upstream side (right side in FIG. 2) of the bus side surface 15 is proportional to θ1. Therefore, it is not preferable because a large area where the falling material cannot be collected is formed below the concave groove 6 in this portion. The inclination angle θ1 of the concave groove 6 is the same in other embodiments.

本発明において、上記凹溝６の形状（断面形状）は、Ｖ字状、コ字状またはＵ字状が好ましい。本例の凹溝６は、図３に示すように上面１２と下面１３とによって形成されるＶ字状を有している。該上面１２および下面１３は、バス側側面１５を流下する流下物を確実に凹溝６内に収集し、収集した流下物をこぼすことなくツィール１（バス側側面１５）の端部に導くために、いずれも凹溝６の開口から奥に向かって水平方向に対して下り傾斜面であることが好ましい。すなわち、上面１２を下り傾斜面にすることによって、ツィール１のバス側側面１５に付着した凝集物は、側面１５を凹溝６まで流下すると、該凹溝６の上面１２の下り傾斜面に移乗し、さらに下り傾斜面に沿って奥に向かって流動し凹溝６内に取り込まれる。そして、凹溝６内に取り込まれた流下物は、下面１３が下り傾斜面になっているので、凹溝６からこぼれることなく、凹溝６の下り端部に向かって流動する。   In the present invention, the shape (cross-sectional shape) of the concave groove 6 is preferably V-shaped, U-shaped or U-shaped. The groove 6 of this example has a V-shape formed by the upper surface 12 and the lower surface 13 as shown in FIG. The upper surface 12 and the lower surface 13 reliably collect the falling material flowing down the bus-side side surface 15 in the concave groove 6 and guide it to the end of the wheel 1 (the bus-side side surface 15) without spilling the collected flowing material. In addition, it is preferable that all of them are downwardly inclined surfaces with respect to the horizontal direction from the opening of the groove 6 toward the back. That is, by making the upper surface 12 a downward inclined surface, the aggregates attached to the bus side surface 15 of the wheel 1 are transferred to the downward inclined surface of the upper surface 12 of the concave groove 6 when the side surface 15 flows down to the concave groove 6. Furthermore, it flows toward the back along the downward inclined surface and is taken into the groove 6. And the flowed-in thing taken in into the ditch | groove 6 flows toward the descent | fall end part of the ditch | groove 6 without spilling from the ditch | groove 6, since the lower surface 13 has become the downward inclined surface.

この凹溝６の上面１２と下面１３の奥行き方向における水平方向に対する下り傾斜角度θ２、θ３は、凹溝６の形状や凹溝６の奥行き深さｄなどを考慮して適宜決めるため特定されないが、例えば上面１２の下り傾斜角度θ２としては、３０度以上が好ましく、より好ましくは４０度以上である。上面１２の下り傾斜角度θ２が３０度より小さいと、ツィール１の側面１５を流下してきた流下物が上面１２へ円滑に移乗できなくなり、凹溝６への取り込みが確実に得られなくなる。一方、下面１３の下り傾斜角度θ３は、凹溝６の奥行き深さｄと凹溝６内に取り込まれる流下物の収集量から、前記流下物が凹溝６から外にこぼれることなく凹溝６内に収容されるように設定する。しかして、下面１３の下り傾斜角度θ３としては５度以上が好ましく、より好ましくは８度以上である。   The downward inclination angles θ2 and θ3 with respect to the horizontal direction in the depth direction of the upper surface 12 and the lower surface 13 of the concave groove 6 are not specified because they are determined appropriately in consideration of the shape of the concave groove 6, the depth depth d of the concave groove 6, and the like. For example, the downward inclination angle θ2 of the upper surface 12 is preferably 30 degrees or more, and more preferably 40 degrees or more. When the downward inclination angle θ2 of the upper surface 12 is smaller than 30 degrees, the falling material that has flowed down the side surface 15 of the wheel 1 cannot be smoothly transferred to the upper surface 12, and the incorporation into the concave groove 6 cannot be reliably obtained. On the other hand, the downward inclination angle θ3 of the lower surface 13 is determined based on the depth d of the concave groove 6 and the collected amount of the falling material taken into the concave groove 6, so that the falling material does not spill out from the concave groove 6. Set to be housed inside. Therefore, the downward inclination angle θ3 of the lower surface 13 is preferably 5 degrees or more, more preferably 8 degrees or more.

また、上記凹溝６の奥行き深さｄは５〜３０ｍｍであることが好ましく、８〜２０ｍｍであるとより好ましい。ｄが５ｍｍより小さいと、凹溝６の下面１３の下り傾斜角度θ３を大きく設定しても、収集した流下物を凹溝６内に収容して端部まで流動させることが困難になる。また、ｄが３０ｍｍを超えることは凹溝６を必要以上に深く形成することになり、ツィール１の強度上や凹溝６の加工負担の面で好ましくない。ｄを上記範囲で適当に決めることにより、凹溝６内に取り込まれた流下物を外にこぼさずに凹溝６内に確実に収容してツィール１の端部に流動させることができる。なお、凹溝６の開口部の溝幅ｗは５ｍｍ以上が好ましく、１０ｍｍ以上がより好ましい。   Moreover, it is preferable that the depth depth d of the said ditch | groove 6 is 5-30 mm, and it is more preferable in it being 8-20 mm. If d is smaller than 5 mm, it becomes difficult to accommodate the collected falling material in the groove 6 and flow to the end even if the downward inclination angle θ3 of the lower surface 13 of the groove 6 is set large. Further, if d exceeds 30 mm, the groove 6 is formed deeper than necessary, which is not preferable in terms of the strength of the wheel 1 and the processing load of the groove 6. By appropriately determining d within the above range, the falling material taken into the groove 6 can be reliably accommodated in the groove 6 without spilling out and flowed to the end of the wheel 1. The groove width w of the opening of the concave groove 6 is preferably 5 mm or more, and more preferably 10 mm or more.

また、本発明においてツィール１は、シリカガラスセラミックなどの耐熱材料で作製された主要部を、図３に示すように耐熱性および耐蝕性に優れる白金または白金合金１１で被覆するのが好ましい。特に成形温度が高いホウケイ酸ガラスに対しては、ツィール１を高温の溶融ガラスから保護し、さらに該白金または白金合金１１に通電し加熱することによって、溶融ガラス供給部８における溶融ガラス１７を所定の温度に保持できるとともに、ツィール１のバス側側面１５に付着した凝集物の流動性がよくなるため凹溝６による取り出しが容易となる。   In addition, in the present invention, the wheel 1 is preferably coated with platinum or a platinum alloy 11 that is excellent in heat resistance and corrosion resistance as shown in FIG. 3 in a main part made of a heat resistant material such as silica glass ceramic. In particular, for borosilicate glass having a high molding temperature, the molten glass 17 in the molten glass supply unit 8 is predetermined by protecting the tiel 1 from high-temperature molten glass and further energizing and heating the platinum or platinum alloy 11. And the fluidity of the agglomerates adhering to the bath side surface 15 of the wheel 1 is improved, so that the removal by the concave groove 6 is facilitated.

以上、本発明の好ましい実施形態として凹溝の断面形状がＶ字状のツィールについて説明したが、凹溝の断面形状は種々の形状に変えることができる。図４は、ツィール１に設ける凹溝の他の好ましい実施形態を例示したものである。（Ａ）のツィール１は、凹溝６Ａの断面形状がコ字状の例である。この凹溝６Ａはコ字状の断面を有しているため、図３のＶ字状の凹溝６に比べて大きい断面積の凹溝が容易に得られる。（Ｂ）のツィール１は、断面形状がＵ字状の凹溝６Ｂを有し、凹溝６Ｂが湾曲面で形成されている。また、（Ｃ）のツィール１は、図３と同じＶ字状の凹溝６Ｃであるが、本例では凹溝６Ｃの上面と連なる側面１５を厚さｂ（例えば１〜１０ｍｍ程度）だけ凹ませて、バス側側面１５を流下する流下物が確実に凹溝６Ｃに収集されるようにしたものである。これら（Ａ）、（Ｂ）、（Ｃ）の各ツィ−ルにおいても、凹溝６Ａ〜６Ｃの上面および下面は奥行きに向かって水平方向に対して下り傾斜しており、その傾斜角度の大きさも前記した図３の凹溝６と実質的に同じである。そして、各凹溝６Ａ〜６Ｃの奥行き深さおよび開口部の溝幅も、図３の凹溝６と実質的に同じである。なお、（Ｂ）のＵ字状の凹溝６Ｂにおける上面とは、凹溝６Ｂの開口上縁から変曲点までの領域をいい、上面の傾斜角度とは、該開口上縁と該変曲点とを結ぶ直線の水平方向に対する傾斜角として求められる。下面についても同様である。   As described above, a wheel having a V-shaped cross-sectional shape has been described as a preferred embodiment of the present invention, but the cross-sectional shape of the groove can be changed to various shapes. FIG. 4 illustrates another preferred embodiment of a recessed groove provided in the wheel 1. The wheel 1 of (A) is an example in which the cross-sectional shape of the groove 6A is U-shaped. Since the groove 6A has a U-shaped cross section, a groove having a larger cross-sectional area than the V-shaped groove 6 in FIG. 3 can be easily obtained. The wheel 1 of (B) has a groove 6B having a U-shaped cross section, and the groove 6B is formed with a curved surface. Further, the wheel 1 in FIG. 3C is the same V-shaped groove 6C as in FIG. 3, but in this example, the side surface 15 connected to the upper surface of the groove 6C is recessed by a thickness b (for example, about 1 to 10 mm). In addition, the falling material flowing down the bus side surface 15 is surely collected in the concave groove 6C. Also in each of the tools (A), (B), and (C), the upper and lower surfaces of the grooves 6A to 6C are inclined downward with respect to the horizontal direction toward the depth, and the inclination angle is large. This is substantially the same as the concave groove 6 of FIG. And the depth depth of each recessed groove 6A-6C and the groove width of an opening part are also substantially the same as the recessed groove 6 of FIG. The upper surface of the U-shaped groove 6B in (B) refers to the region from the upper edge of the groove 6B to the inflection point, and the inclination angle of the upper surface refers to the upper edge of the opening and the inflection. It is obtained as an inclination angle with respect to the horizontal direction of a straight line connecting points. The same applies to the lower surface.

図５は、凹溝６の異なる形成の仕方を示したものである。（Ａ）は、凹溝６Ｄをツィール１のバス側側面１５の中央部から両端部に向かって水平方向に対して下方に傾斜して形成する方法である。この方法により、凹溝６Ｄはバス側側面１５を横切って山形状に形成される。このため、バス側側面１５を流下する流下物は該凹溝６Ｄに収集された後、凹溝６Ｄ内をツィール１の両端に向かって流動し、該両端から溶融ガラス流の幅方向両端部に流下される。（Ｂ）は、（Ａ）の凹溝６Ｄをさらに変形させたもので、全体的に山形である点は（Ａ）と同じであるが、凹溝６Ｅを円弧状に形成するところで異なっている。凹溝６Ｅが円弧状であっても、凹溝６Ｅは全体的にツィール１の両端に向かって水平方向に対して下方に傾斜しているため、（Ａ）の山形の凹溝と同じように収集した流下物をツィール１の両端に流動させることができる。   FIG. 5 shows different ways of forming the groove 6. (A) is a method in which the concave groove 6D is formed so as to be inclined downward with respect to the horizontal direction from the central portion of the bus side surface 15 of the wheel 1 toward both end portions. By this method, the concave groove 6D is formed in a mountain shape across the bus side surface 15. For this reason, after the falling material flowing down the bus side surface 15 is collected in the concave groove 6D, it flows in the concave groove 6D toward both ends of the wheel 1 and from both ends to both ends in the width direction of the molten glass flow. Be flowed down. (B) is a further modification of the concave groove 6D of (A), and is the same as (A) in that it is generally chevron, but differs in that the concave groove 6E is formed in an arc shape. . Even if the concave groove 6E is arcuate, the concave groove 6E is inclined downward with respect to the horizontal direction toward both ends of the wheel 1 as a whole, so that it is the same as the mountain-shaped concave groove in FIG. The collected spilled material can flow to both ends of the wheel 1.

なお、本発明において、凹溝６はツィール１にバス側側面１５の全幅を横切るように設ければ、１本を設けるだけで足りるが、２本以上を上下に並列して設けることもできる。   In the present invention, if the groove 6 is provided in the wheel 1 so as to cross the entire width of the bus-side side surface 15, it is sufficient to provide one, but two or more grooves can be provided in parallel in the vertical direction.

本発明のツィールには、以上説明したようにバス側側面に凹溝が形成されているので、該ツィールを使用して溶融ガラスをフロートバスに供給すると、該ツィールのバス側側面を流下する流下物を前記凹溝で収集してツィールの端部に導き、溶融ガラス流の幅方向端部に流下させることができる。これによって、ツィールのバス側側面に付着した凝集物が流下して溶融ガラス流の幅方向中央部分の主要部に流下し混入するのを防止できる。   Since the groove of the present invention has a concave groove formed on the side surface of the bus as described above, when the molten glass is supplied to the float bath using the wheel, the flow flows down the side surface of the bus of the wheel. Objects can be collected in the groove and guided to the end of the wheel and allowed to flow down to the widthwise end of the molten glass stream. Thereby, it is possible to prevent the agglomerates adhering to the bath side surface of the wheel from flowing down and flowing into the main part of the central portion in the width direction of the molten glass flow.

本発明は、フロートガラス製造装置の溶融ガラス供給用ツィールとして有効であり、特に高品質が要求されるＬＣＤ用ガラス基板のフロートガラス製造に好適する。   INDUSTRIAL APPLICABILITY The present invention is effective as a molten glass supply tool for a float glass manufacturing apparatus, and is particularly suitable for manufacturing a float glass of an LCD glass substrate that requires high quality.

１：ツィール
２：供給パイプ
３：フロートバス
４：溶融錫
５：ガラスリボン
６：凹溝
７：囲い壁
８：溶融ガラス供給部
９：金具
１０：吊り棒
１１：白金または白金合金
１２：上面
１３：下面
１４：リップタイル
１５：フロートバス側側面
１６：ブロック
１７：溶融ガラス 1: Tiel 2: Supply pipe 3: Float bath 4: Molten tin 5: Glass ribbon 6: Groove 7: Enclosure wall 8: Molten glass supply unit 9: Metal fitting 10: Hanging rod 11: Platinum or platinum alloy 12: Upper surface 13 : Lower surface 14: Lip tile 15: Float bath side surface 16: Block 17: Molten glass

Claims (9)

フロートバスの溶融ガラス供給部に昇降可能に設置され、高さを変えることにより前記フロートバスに供給する溶融ガラス量を調節するための溶融ガラス調量用ツィールであって、
該ツィールのフロートバス側側面の下端近傍に、該フロートバス側側面を流下する流下物を収集する凹溝が設けられており、
該凹溝は、前記フロートバス側側面を横切り、かつ少なくとも一方の端部に向かって水平方向に対して下方に傾斜するように、形成されている溶融ガラス調量用ツィール。 A molten glass metering tool for adjusting the amount of molten glass to be supplied to the float bath by changing the height, which is installed in the molten glass supply section of the float bath so as to be movable up and down,
In the vicinity of the lower end of the float bath side surface of the wheel, a concave groove for collecting the flowing-down material flowing down the float bath side surface is provided,
The molten glass metering wheel is formed so that the concave groove traverses the side surface of the float bath and is inclined downward with respect to the horizontal direction toward at least one end. 前記凹溝の下面および上面は、前記凹溝の開口から奥に向かって水平方向に対して下り傾斜面をなしている請求項１に記載の溶融ガラス調量用ツィール。   2. The molten glass metering tool according to claim 1, wherein a lower surface and an upper surface of the concave groove form a downward inclined surface with respect to a horizontal direction from the opening of the concave groove toward the back. 前記凹溝は、一方の端部から他方の端部に向かって水平方向に対して下方に傾斜して形成されている請求項１または２に記載の溶融ガラス調量用ツィール。   3. The molten glass metering tool according to claim 1, wherein the concave groove is formed to be inclined downward with respect to the horizontal direction from one end to the other end. 4. 前記凹溝は、中央部から両端部に向かって水平方向に対して下方に傾斜して形成されている請求項１または２に記載の溶融ガラス調量用ツィール。   3. The molten glass metering tool according to claim 1, wherein the concave groove is formed to be inclined downward with respect to a horizontal direction from a central portion toward both end portions. 前記凹溝の水平方向に対する傾斜角度が２〜３０度である請求項１〜４のいずれかに記載の溶融ガラス調量用ツィール。   The molten glass metering tool according to any one of claims 1 to 4, wherein an inclination angle of the concave groove with respect to a horizontal direction is 2 to 30 degrees. 前記凹溝の断面形状が、Ｖ字状、コ字状またはＵ字状である請求項１〜５のいずれかに記載の溶融ガラス調量用ツィール。   The molten glass metering tool according to any one of claims 1 to 5, wherein a cross-sectional shape of the groove is V-shaped, U-shaped or U-shaped. 前記凹溝の奥行深さが５〜３０ｍｍである請求項１〜６のいずれかに記載の溶融ガラス調量用ツィール。   The molten glass metering tool according to any one of claims 1 to 6, wherein a depth of the concave groove is 5 to 30 mm. 前記ツィールが、白金または白金合金で被覆され、通電加熱によって一定の温度に保持される請求項１〜７のいずれかに記載の溶融ガラス調量用ツィール。   The wheel for molten glass metering according to any one of claims 1 to 7, wherein the wheel is coated with platinum or a platinum alloy and maintained at a constant temperature by energization heating. 請求項１〜８のいずれかに記載の溶融ガラス調量用ツィールを用いて、該ツィールの前記フロートバス側側面を流下する流下物を前記凹溝で収集して前記凹溝の端部に導き、前記凹溝の端部から溶融ガラス流の幅方向端部に流下させる溶融ガラスの供給方法。   Using the molten glass metering tool according to any one of claims 1 to 8, the falling material flowing down the side surface of the float bath of the wheel is collected by the concave groove and guided to the end of the concave groove. A method for supplying molten glass that flows down from an end of the concave groove to an end in the width direction of the molten glass flow.
JP2010022452A 2010-02-03 2010-02-03 Method for supplying molten glass metering wheel and molten glass. Expired - Fee Related JP5482255B2 (en)

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WO2014013913A1 (en) * 2012-07-17 2014-01-23 旭硝子株式会社 Method for producing glass plate, and glass plate
JP2016113344A (en) * 2014-12-17 2016-06-23 日本電気硝子株式会社 Tuyere and method for manufacturing glass article
KR20200059571A (en) * 2018-11-21 2020-05-29 주식회사 엘지화학 Apparatus for manufacturing glass
KR102542084B1 (en) * 2018-11-21 2023-06-13 주식회사 엘지화학 Apparatus for manufacturing glass
CN109231795A (en) * 2018-11-30 2019-01-18 中建材蚌埠玻璃工业设计研究院有限公司 A kind of section flashboard for electronical display glass platinum channel tapping channel
CN109231795B (en) * 2018-11-30 2024-01-23 中建材玻璃新材料研究院集团有限公司 Section flashboard for liquid outlet channel of platinum channel of electronic display glass
KR20200113701A (en) * 2019-03-26 2020-10-07 주식회사 엘지화학 Apparatus for manufacturing glass
KR102542098B1 (en) * 2019-03-26 2023-06-13 주식회사 엘지화학 Apparatus for manufacturing glass
CN114180816A (en) * 2021-12-22 2022-03-15 中国建材国际工程集团有限公司 Feeding device and feeding process for float glass production
CN114180816B (en) * 2021-12-22 2023-04-07 中国建材国际工程集团有限公司 Feeding device and feeding process for float glass production

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