阅读说明：本技术 一种大流量贵金属通道 (Large-flow noble metal channel ) 是由 彭寿 张冲 金良茂 曹志强 江龙跃 朱明柳 沈玉国 于 2020-06-08 设计创作，主要内容包括：本发明提供一种大流量贵金属通道,它包括玻璃液混流搅拌段,在玻璃液混流搅拌段一端并联有至少两个玻璃液加热澄清冷却段,在玻璃液混流搅拌段另一端还连通有供液槽。本发明主要用于8.5代及以上高世代TFT玻璃生产过程中大流量高温玻璃液的澄清、均化,为后面的浮法成形或溢流成形工艺提供无气泡、无条纹的高质量玻璃液。(The invention provides a large-flow noble metal channel which comprises a glass liquid mixed flow stirring section, wherein one end of the glass liquid mixed flow stirring section is connected with at least two glass liquid heating, clarifying and cooling sections in parallel, and the other end of the glass liquid mixed flow stirring section is also communicated with a liquid supply groove. The invention is mainly used for clarifying and homogenizing large-flow high-temperature glass liquid in the production process of 8.5 generation and higher generation TFT glass, and provides bubble-free and streak-free high-quality glass liquid for the following float forming or overflow forming process.)

1. The utility model provides a large-traffic noble metal passageway, it includes glass liquid mixed flow stirring section (1), its characterized in that: one end of the glass liquid mixed flow stirring section (1) is connected with at least two glass liquid heating, clarifying and cooling sections (2) in parallel, the other end of the glass liquid mixed flow stirring section (1) is also communicated with a liquid supply tank (3), the glass liquid heating, clarifying and cooling section (2) comprises a heating channel (2a) one end of which is communicated with the kiln, and the other end of the heating channel (2a) is sequentially communicated with a clarifying tank (2 b) and a cooling channel (2 c); the glass liquid mixed flow stirring section (1) comprises a confluence channel (1 a), one end of the confluence channel (1 a) is communicated with the two cooling channels (2 c), a group of spoilers (1 c) are arranged in the confluence channel (1 a), the other end of the confluence channel (1 a) is communicated with at least one glass liquid stirring groove (1 b), and a liquid outlet of the glass liquid stirring groove (1 b) is communicated with a liquid supply groove (3).

2. A high flow precious metal channel according to claim 1, wherein: each spoiler (1 c) in the group of spoilers (1 c) is distributed in a staggered manner, and a section of snake-shaped flow channel (4) is divided in the confluence channel (1 a) through the division of the group of spoilers (1 c).

3. A high flow precious metal channel according to claim 1, wherein: the other end of the confluence channel (1 a) is sequentially communicated with three molten glass stirring tanks (1 b), and the stirring directions of two adjacent molten glass stirring tanks (1 b) are different.

4. A high flow precious metal channel according to claim 1, wherein: the diameter of the heating channel (2a) is 150 mm-300 mm, and the length is 500 mm-1500 mm; the diameter of the clarifying tank (2 b) is 250 mm-400 mm, and the length is 3000 mm-8000 mm; the diameter of the cooling channel (2 c) is 220 mm-360 mm, and the length is 2000 mm-6000 mm; the diameter of the confluence channel (1 a) is 300-500 mm; the diameter of the molten glass stirring tank (1 b) is 350-550 mm, and the stirring speed is 2-20 circles per minute; the diameter of the liquid supply tank (3) is 300 mm-500 mm.

5. A high flow precious metal channel according to claim 1, wherein: the highest temperature of the heating channel (2a) during working is 1650 ℃, the highest temperature of the clarifying tank (2 b) during working is 1670 ℃, the temperature of the cooling channel (2 c) during working is 1500-1550 ℃, and the temperature of the liquid supply tank (3) during working is 1200-1400 ℃.

6. A high flow precious metal channel according to claim 1, wherein: the heating channel (2a), the clarifying tank (2 b), the cooling channel (2 c), the confluence channel (1 a), the glass metal stirring tank (1 b), the spoiler (1 c) and the liquid supply tank (3) are made of platinum-rhodium alloy or platinum-iridium alloy or platinum.

The technical field is as follows:

the invention relates to electronic glass manufacturing equipment, in particular to a large-flow noble metal channel mainly used in the production process of 8.5 generation and above advanced TFT glass substrates.

Background art:

the technology of treating the glass liquid by utilizing a noble metal channel is the most common method for producing TFT glass at present. The method utilizes the advantages of good temperature resistance, direct energization heating, good ductility and the like of noble metals, can be energized and directly heated to 1650 ℃, can realize effective bubble discharge of TFT substrate glass liquid at high temperature, achieves the effect of high-quality clarification homogenization, is key technical equipment for producing TFT glass, is easy to realize mass production, and relates to the process in the aspect of a plurality of patents and documents at home and abroad. For example, the Chinese invention patent CN101935146B describes a treatment method of glass liquid in a platinum channel, which realizes clarification and homogenization of glass liquid flow of 5-20 tons/day through five treatment steps of a clarification bin, a cooling bin, a stirring bin, a homogenizing bin and a feeding bin, but the treatment capacity of the method is limited, and large-flow glass liquid higher than 20 tons/day cannot ensure high-temperature mechanical strength due to too large platinum pipe required, and cannot realize high-quality stable clarification; the invention Chinese patent CN105948462A relates to a platinum channel heating device, a method, a platinum channel and a glass production system, the device is used for generating an alternating magnetic field, an induced eddy current is formed on the platinum channel, the eddy current flows through the platinum channel to generate heat, and the uniform heating of the platinum channel is realized, but the invention does not relate to a specific treatment method of large-flow molten glass.

The invention content is as follows:

the invention aims to overcome the defects in the prior art and provides a large-flow noble metal channel.

The application provides the following technical scheme:

the utility model provides a large-traffic noble metal passageway, it includes glass liquid mixed flow stirring section, its characterized in that: at least two molten glass heating, clarifying and cooling sections are connected in parallel at one end of the molten glass mixed flow stirring section, a liquid supply groove is also communicated at the other end of the molten glass mixed flow stirring section, the molten glass heating, clarifying and cooling section comprises a heating channel with one end communicated with the kiln, and a clarifying groove and a cooling channel are sequentially communicated at the other end of the heating channel; the glass liquid mixed flow stirring section comprises a confluence channel, one end of the confluence channel is communicated with the two cooling channels, a group of spoilers are arranged in the confluence channel, the other end of the confluence channel is communicated with at least one glass liquid stirring groove, and a liquid outlet of the glass liquid stirring groove is communicated with a liquid supply groove.

On the basis of the technical scheme, the following further technical scheme can be provided:

each spoiler in the group of spoilers is distributed in a staggered mode, and a section of snake-shaped flow channel is divided in the confluence channel through the division of the group of spoilers.

The other end of the confluence channel is sequentially communicated with three molten glass stirring grooves, and the stirring directions of two adjacent molten glass stirring grooves are different.

The diameter of the heating channel is 150 mm-300 mm, and the length of the heating channel is 500 mm-1500 mm; the diameter of the clarifying tank is 250 mm-400 mm, and the length of the clarifying tank is 3000 mm-8000 mm; the diameter of the cooling channel is 220 mm-360 mm, and the length of the cooling channel is 2000 mm-6000 mm; the diameter of the confluence channel is 300 mm-500 mm; the diameter of the molten glass stirring tank is 350 mm-550 mm, and the stirring speed is 2-20 circles per minute; the diameter of the liquid supply tank is 300 mm-500 mm.

The highest temperature of the heating channel during working is 1650 ℃, the highest temperature of the clarifying tank during working is 1670 ℃, the temperature of the cooling channel during working is 1500-1550 ℃, and the temperature of the liquid supply tank during working is 1200-1400 ℃.

The heating channel, the clarifying tank, the cooling channel, the confluence channel, the glass metal stirring tank, the spoiler and the liquid supply tank are made of platinum-rhodium alloy or platinum-iridium alloy or platinum.

The invention has the advantages that:

the invention has simple technical equipment, strong operability and excellent clarification homogenization effect, can realize high-temperature heating clarification of large-flow glass liquid by arranging two parallel glass liquid heating, clarification and cooling sections, can fully ensure the service life and high-temperature mechanical strength of platinum at a high-temperature section, and avoids the problem of collapse risk of a single large-diameter glass liquid channel at the high-temperature section due to the pressure action of the large-flow high-liquid-level glass liquid on the premise of ensuring high yield.

Description of the drawings:

FIG. 1 is a process flow diagram of examples 1-4 provided herein.

The specific implementation mode is as follows: