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Clarification tank, glass article manufacturing device, and glass article manufacturing method

A technology of clarification tank and glass melting, which is applied in the field of glass article manufacturing equipment and clarification tank, and can solve the problems such as the quality decline of glass melting material and the concentration of heterogeneous material layers.

Active Publication Date: 2019-02-15
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, for example, in the brick-made clarification tanks shown in Patent Documents 1 and 2, convection of the molten glass sometimes occurs in the clarification tank.
As a result, the molten glass in the vacuum degassing tank is stirred together with the heterogeneous material layer, and it may be difficult to collect the heterogeneous material layer locally and then discharge it.
As a result, the quality of the glass melt sometimes deteriorates

Method used

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  • Clarification tank, glass article manufacturing device, and glass article manufacturing method
  • Clarification tank, glass article manufacturing device, and glass article manufacturing method
  • Clarification tank, glass article manufacturing device, and glass article manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0060] Such as figure 1 As shown, the glassware manufacturing apparatus 10 of the first embodiment includes a so-called door-type vacuum degassing apparatus. The glassware manufacturing apparatus 10 includes a clarification tank 14 , an ascending pipe 13 , a descending pipe 15 , a barrier plate 20 , a melting tank 11 , a forming device 500 , and a decompression unit not shown.

[0061] The clarification tank 14 is formed with a refractory brick. Such as figure 2 and image 3 As shown, the clarification tank 14 is a hollow structure having an inner space surrounded by refractory bricks. That is, the internal space of the clarification tank 14 is surrounded by the side wall part 17, the top part 18, and the bottom part 19, and the said side wall part 17 is formed with the brick 17a and the brick 17b. Brick 17a and brick 17b are rectangular parallelepiped refractory bricks. The top 18 and the bottom 19 are formed by one refractory brick, or a combination of multiple refract...

no. 2 approach

[0125] The glass article manufacturing apparatus 210 of 2nd Embodiment is a glass article manufacturing apparatus which has what is called a flat high-temperature clarification tank.

[0126] In addition, the same structure as 1st Embodiment may be attached|subjected to the same code|symbol in drawing, and description is abbreviate|omitted.

[0127] Such as Figure 6 As shown, the glass article manufacturing device 210 includes a clarification tank 214 , a barrier plate 20 , electrodes (heating devices) 40 a , 40 b , 40 c , a melting tank 11 and a forming device 500 .

[0128]The clarification tank 214 is a hollow structure having an inner space surrounded by refractory bricks. The flow path 214a of the molten glass G is formed in the internal space of the clarification tank 214. As shown in FIG. The flow path 214 a has a polygonal flow path portion 230 and a rectangular flow path portion 231 .

[0129] The polygonal flow path portion 230 is the same as the polygonal flow p...

Embodiment 1

[0148] Embodiments 1-1 to 1-4 were compared with comparative examples 1-1 to 1-3 and the reference example through a simulation test. As a result, it was confirmed that convection of molten glass can be suppressed by forming the cross-sectional shape of the molten glass flow path into a polygonal shape of not less than a hexagon and satisfying the formula (4). In Table 1, each parameter of Examples 1-1 to 1-4, Comparative Examples 1-1 to 1-3, and a reference example is shown.

[0149] Table 1

[0150]

[0151] The cross-sectional shape of the glass molten flow path at the polygonal flow path portion of Example 1-1 is as follows: Figure 7 As shown in (A), it is formed in the same hexagonal shape as the molten glass channel 32 of the first embodiment.

[0152] The cross-sectional shape of the glass molten flow path at the polygonal flow path portion of Example 1-2 is as follows: Figure 7 As shown in (B), it is formed in the same hexagonal shape as the molten glass flow c...

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PUM

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Abstract

A setting tank can prevent glass fuse object quality dropping, a glass object making device comprising the same, and a glass object making method using same are provided; the setting tank has a glass fuse liquid flow path made of fireproof bricks and extending in one direction; the flow path has a polygon flow path portion with a section above hexagon; the polygon flow path has the bottom face, a first side face vertical to the bottom face, and a second side face vertical to the bottom face and opposite to the first side face; a size between the bottom of the first side face to the bottom face in a normal direction of the bottom face is set as a, and a formula is complied with: (1): 0.25<a / H<0.52...(1).

Description

technical field [0001] The invention relates to a clarification tank, a glass article manufacturing device and a glass article manufacturing method. Background technique [0002] In order to improve the quality of the formed glass product, a clarification process is performed before forming to remove bubbles generated in the molten glass and to homogenize the glass. As an example of the clarification tank used in such a clarification process, the vacuum degassing tank is proposed (for example, patent document 1, 2). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: International Publication No. 2009 / 148028 [0006] Patent Document 2: Japanese Patent Laid-Open No. 2000-178029 [0007] In the clarification tank, components that tend to volatilize from the material surface of the glass melt flowing in the flow path of the clarification tank volatilize to form a material layer having a different composition from other normal parts, that is, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B5/225
CPCC03B5/04C03B5/225
Inventor 浦田新吾黑田隆之助增田健一
Owner ASAHI GLASS CO LTD
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