CN212293297U

CN212293297U - A heating melting furnace of subsection for electronic display glass production

Info

Publication number: CN212293297U
Application number: CN202020891092.8U
Authority: CN
Inventors: 张冲; 左泽芳; 方强; 曹志强; 张治民
Original assignee: CNBM Bengbu Design and Research Institute for Glass Industry Co Ltd
Current assignee: CNBM Bengbu Design and Research Institute for Glass Industry Co Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-01-05
Anticipated expiration: 2030-05-25

Abstract

The utility model provides a subsection heating melting furnace for electronic display glass production, it includes melting furnace (1), its characterized in that: the melting furnace (1) is internally divided into a feeding part (1 a), a first melting part (1 b), a second melting part (1 c) and a clarifying part (1 d) along the flowing direction of molten glass, a group of burners (2) are symmetrically arranged on the first melting part (1 b), and a group of heating electrodes (3) are symmetrically arranged on the second melting part (1 c). The utility model discloses simple structure, convenient to use, avoided the restraint of electrode heating distance, under the effect distance condition that does not increase the electrode, can improve the melting ability of melting furnace by a wide margin.

Description

A heating melting furnace of subsection for electronic display glass production

The technical field is as follows:

the utility model belongs to the technical field of glass production technique and specifically relates to a subsection heating melting furnace for electronic display glass production.

Background art:

in the field of manufacturing of electronic display glass (TFT-LCD glass), a melting furnace consists of a feeding part, a melting part, a clarifying part and other parts, wherein the vertical cross section comprises a tank bottom, a tank wall, a breast wall and an arch top, a smoke outlet is arranged on the breast wall, the tank bottom and the tank wall need to be air-cooled, the tank bottom and the tank wall are used for containing molten glass, an upper space is formed between the liquid level of the molten glass and the arch top of the feeding part, a combustion space is formed between the liquid level of the molten glass and the arch top of the melting part, and the melting furnace is integrally supported and fixed in a suspended mode.

In order to meet the technological requirements, the melting temperature of the glass liquid reaches 1680 ℃, the raw materials are heated to a molten conductive state by an oxygen-enriched burner, then the raw materials are continuously heated to the temperature required by the technology by a heating electrode, the oxygen-enriched burner is arranged on the upper part of the tank wall and is higher than the liquid level of the glass liquid, and the heating electrode is arranged on two sides of the lower part of the tank wall and is lower than the liquid level of the glass liquid. There is an urgent market need to improve the melting capacity of melting furnaces to produce wider breadth electronic display glass.

At present, considering the safety factor, when the voltage of the heating electrode is used to the limit, the melting capacity of the melting furnace cannot be improved by increasing the voltage, that is, the melting capacity of the melting furnace cannot be improved by increasing the width of the furnace body, and only increasing the length of the furnace body can cause the heating efficiency to be greatly reduced. The method comprises the following steps of arranging a heating electrode on the bottom of a tank to shorten the distance between the heating electrodes after increasing the width of a melting furnace body, wherein the heating electrode is completely immersed in molten glass, so that the heating electrode cannot be replaced, and the path of heating current is not beneficial to heating. Increasing the width of the melting section of the melting furnace has become a development bottleneck in the electronic display glass industry.

The utility model has the following contents:

the utility model provides a subsection heating melting furnace for electronic display glass production in order to overcome the defects in the prior art.

The application provides the following technical scheme:

a heating melting furnace of subsection for electronic display glass production, it includes the melting furnace, its characterized in that: the melting furnace is internally divided into a feeding part, a first melting part, a second melting part and a clarifying part along the flowing direction of molten glass, wherein a group of burners are symmetrically arranged on the first melting part, and a group of heating electrodes are symmetrically arranged on the second melting part.

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

and a group of smoke outlets are also arranged on the first melting part above the group of burners.

The width of the first melting part is greater than that of the second melting part.

Utility model advantage:

the utility model discloses simple structure, convenient to use, avoided the restraint of electrode heating distance, under the effect distance condition that does not increase the electrode, can improve the melting ability of melting furnace by a wide margin.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view A-A of FIG. 1;

fig. 3 is a sectional view B-B in fig. 1.

The specific implementation mode is as follows:

as shown in FIGS. 1-3, a sectional heating furnace for electronic display glass production comprises a furnace 1, wherein the width of the furnace 1 is twice that of the original furnace. The melting furnace 1 is internally divided into a feeding part 1a, a first melting part 1b, a second melting part 1c and a clarifying part 1d which are communicated in sequence along the flowing direction of molten glass 13, the width of the feeding part 1a, the width of the first melting part 1b and the width of the clarifying part 1d are the same and are twice of the width of the original melting furnace, and the width of the second melting part 1c is smaller and is the same as the width of the original melting furnace.

A group of burners 2 are symmetrically distributed on the tank walls 1a at two sides of the first melting part 1b above the molten glass 13, the burners 2 are oxygen-enriched gas guns, and flames 2a sprayed by the oxygen-enriched gas guns are horizontally distributed. The group of burners 2 is divided into two rows and symmetrically distributed on the tank wall at two sides of the first melting part 1 b. A group of smoke outlets 4 are arranged on the breast wall 1f of the melting furnace 1 above each row of burners 2, and the group of smoke outlets 4 are distributed corresponding to the burners 2 in the opposite row. One end of the smoke outlet 4 is communicated with the interior of the melting furnace 1, and the other end of the smoke outlet is communicated with the exterior of the melting furnace 1.

A set of symmetrically distributed heating electrodes 3 are arranged on the tank walls at both sides of the second melting part 1c below the liquid level of the molten glass 13, and the molten glass 13 flowing into the second melting part 1c is reheated by the heating electrodes 3 at both sides. The wavy lines in the figure are current schematic lines.

Since the width of the charging part 1a, the width of the first melting part 1b and the width of the refining part 1d are the same as twice of the width of the original melting furnace, and the width of the second melting part 1c is smaller and the same as the width of the original melting furnace, the heating area of the melting furnace is greatly increased, and the melting capacity of the melting furnace is greatly improved. The crown 1e above the charge portion 1a, the first melting portion 1b and the refining portion 1d is wider than the crown 1g above the second melting portion 1 c.

Claims

1. A heating melting furnace of branch for electronic display glass production, it includes melting furnace (1), its characterized in that: the melting furnace (1) is internally divided into a feeding part (1 a), a first melting part (1 b), a second melting part (1 c) and a clarifying part (1 d) along the flowing direction of molten glass, a group of burners (2) are symmetrically arranged on the first melting part (1 b), and a group of heating electrodes (3) are symmetrically arranged on the second melting part (1 c).

2. A sectional heating furnace for electronic display glass production as claimed in claim 1, wherein: a group of smoke outlets (4) are also arranged on the first melting part (1 b) above the group of burners (2).

3. A sectional heating furnace for electronic display glass production as claimed in claim 1, wherein: the width of the first melting part (1 b) is greater than the width of the second melting part (1 c).