Molten glass stirring device, plate glass manufacturing device, molten glass stirring method, and plate glass manufacturing method

A technology of molten glass and stirring device, which is applied in the direction of glass manufacturing equipment, manufacturing tools, glass furnace equipment, etc., can solve the problems such as difficulty in obtaining the homogeneity of molten glass, and achieve high transparency, excellent homogeneity, and high flatness Effect

Active Publication Date: 2019-06-04
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In these cases where extremely high homogeneity is required, it is difficult to obtain sufficient homogeneity of the molten glass with conventional stirring devices

Method used

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  • Molten glass stirring device, plate glass manufacturing device, molten glass stirring method, and plate glass manufacturing method
  • Molten glass stirring device, plate glass manufacturing device, molten glass stirring method, and plate glass manufacturing method
  • Molten glass stirring device, plate glass manufacturing device, molten glass stirring method, and plate glass manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0199] Will image 3 The shown molten glass stirring apparatus 10a of this invention was installed in the main pipe 100 of a molten glass conveyance pipe, and the behavior of the fluid at the time of stirring was evaluated. The dimensions of each part of the molten glass stirring device are as follows.

[0200] The maximum diameter D of the first stirring blade 13 and the second stirring blade 14 1 : 80mm

[0201] The outer diameter D of the annular blade 15 r : 80mm

[0202] Distance between the lower end of the annular blade 15 and the upper end of the branch pipe 110 on the upstream side: +10mm

[0203] Distance between the upper end of the annular blade 15 and the upper end of the branch pipe 110 on the upstream side: +30mm

[0204] Distance between the switching position of the stirring blade and the upper end of the branch pipe 110 on the upstream side: +45mm

[0205] The upward force F of the flow of molten glass produced by the first stirring blades 13 contained ...

Embodiment 2

[0210] Will Figure 4 The shown molten glass stirring apparatus 10c of this invention was installed in the main pipe 100 of a molten glass conveyance pipe, and the behavior of the fluid at the time of stirring was evaluated. The dimension of each part of the molten-glass stirring apparatus 10c is as follows.

[0211] The maximum diameter D of the first stirring blade 13 and the second stirring blade 14 1 : 80mm

[0212] The outer diameter D of the annular blade 15 r : 80mm

[0213] Distance between the lower end of the annular blade 15 and the upper end of the branch pipe 110 on the upstream side: +10 mm

[0214] Distance between the upper end of the annular blade 15 and the upper end of the branch pipe 110 on the upstream side: +30mm

[0215] Distance between the switching position of the stirring blade and the upper end of the branch pipe 110 on the upstream side: +80mm

[0216] The upward force F of the flow of molten glass produced by the first stirring blades 13 con...

Embodiment 3

[0234] Will Figure 8 The illustrated molten glass stirring device 40 was installed in the main pipe 100 of the molten glass conveyance pipe, and the behavior of the fluid when stirring was performed was evaluated.

[0235] The dimension of each part of the molten-glass stirring apparatus 40 is as follows.

[0236] The maximum diameter D of the first stirring blade 43 and the second stirring blade 44 1 : 80mm

[0237] The outer diameter D of the annular blade 45 r : 80mm

[0238] Distance between the lower end of the annular blade 45 and the upper end of the branch pipe 110 on the upstream side: +10 mm

[0239] Distance between the upper end of the annular blade 45 and the upper end of the branch pipe 110 on the upstream side: +30mm

[0240] Distance between the switching position of the stirring blade and the upper end of the branch pipe 110 on the upstream side: +45mm

[0241] The upward force F of the flow of molten glass produced by the first stirring blade 43 contai...

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Abstract

The invention provides a molten glass stirring device, a plate glass manufacturing device, a molten glass stirring method and a plate glass manufacturing method. The heterogeneous composition of molten glass close to the molten glass carrying pipe wall can be restrained, and the stirring action on the molten glass in the molten glass carrying pipe is excellent. The invention relates to a molten glass stirring device, molten glass is stirred in a molten glass carrying pipe provided with branch pipes at the upstream side and the downstream side, and the molten glass stirring device is provided with a rotary center shaft and a stirring part arranged on the center shaft. The stirring part comprises a first stirring blade for generating upward flow of molten glass flow by means of specified rotation, a second stirring blade for generating downward flow of molten glass flow by means of specified rotation, and an annular blade.

Description

technical field [0001] The present invention relates to a molten glass stirring device for stirring molten glass in a molten glass conveying pipe for conveying molten glass, especially for a large flat panel display (FPD) in which a large amount of molten glass is conveyed, and its use. A plate glass manufacturing device of the molten glass stirring device, a molten glass stirring method, and a plate glass manufacturing method are disclosed. Background technique [0002] Conventionally, for the purpose of improving the homogeneity of molten glass, a stirring device was installed in a molten glass conveyance pipe for conveying molten glass, and the molten glass was stirred. The homogeneity of molten glass has a great influence on the transparency and thickness of the produced glass. [0003] A stirring device is generally composed of a central shaft as a center of rotation, and a stirring unit having stirring blades attached around the central shaft. [0004] In order to fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B5/187
Inventor 铃木悠介民辻慎哉村上敏英广濑元之
Owner ASAHI GLASS CO LTD
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