CN212293293U

CN212293293U - A porch formula widescrow melting furnace for electronic display glass production

Info

Publication number: CN212293293U
Application number: CN202020891078.8U
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 porch formula broad body melting furnace for electronic display glass production, it includes melting furnace (1), divide into charging portion (1 a), melting portion (1 b) and clarification portion (1 c) along glass liquid flow direction in melting furnace (1), on the pool wall of melting portion (1 b), the symmetry is equipped with a set of heating electrode (2), still the symmetry is equipped with its characterized in that of a set of first combustor (5): be equipped with breach (6) at feeding portion (1 a) and melting portion (1 b) bottom of the pool, be equipped with on scarce hole (2) with separate cover (3), separate cover (3) and breach (6) form cavity (4) with external intercommunication, be equipped with a set of second heating electrode (7) that correspond the distribution with first heating electrode (2) on separate cover (3) to and correspond second combustor (8) that distribute with first combustor (5). The utility model discloses simple structure, convenient to use under not changing the heating process condition, improve the melting furnace productivity through increasing the melting furnace width, are convenient for maintain simultaneously again.

Description

A porch formula widescrow melting furnace for electronic display glass production

The technical field is as follows:

the utility model belongs to the technical field of electronic display glass production and specifically relates to a porch formula broad body 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 glass melt, an upper space is formed between the plane of the glass melt and the arch top of the feeding part, a combustion space is formed between the plane of the glass melt 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 melting and conducting 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 plane of the glass melt, and the heating electrode is arranged on two sides of the lower part of the tank wall and is lower than the plane of the glass melt. 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 reaches the use limit, the melting capacity 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 by increasing the length of the furnace body, and the increase of the length of the melting furnace can cause the great reduction of the heating efficiency. The technology of the Corning company also comprises the technology that after the width of a furnace body is increased, a heating electrode is arranged on the bottom of a tank to shorten the distance between electrodes in order to increase the melting capacity of the melting furnace, the heating electrode is completely immersed in molten glass, firstly, the heating electrode cannot be replaced, and secondly, the path of heating current is not beneficial to heating. Increasing the width of the melting part of the melting furnace (the technology of photoelectric utilization in the achievement) has become the development bottleneck of the electronic display glass industry.

In Chinese patent porch-type wide-body melting furnace (201911124368.8) for electronic display glass production, a solution for the wide-body melting furnace is provided, but the problems that heat in a cavity of a cover body is not easy to dissipate, a heating part is inconvenient to maintain and the like exist.

The utility model has the following contents:

the utility model provides a porch type wide-body melting furnace for electronic display glass production, aiming at overcoming the defects in the prior art.

The application provides the following technical scheme:

the utility model provides a porch formula widescrow melting furnace for electronic display glass production, it includes the melting furnace, divide into charging portion, melting portion and clarification portion along the glass liquid flow direction in the melting furnace, on the pool wall of melting portion, the symmetry is equipped with a set of first heating electrode, and still the symmetry is equipped with its characterized in that of a set of first combustor: the bottom of the charging part and the bottom of the melting part are provided with notches, the notches are provided with separating covers, the separating covers and the notches form cavities communicated with the outside, the horizontal ends of the notches communicated with the outside are positioned on one side of the charging part, and the separating covers are provided with a group of second heating electrodes distributed correspondingly to the first heating electrodes and second burners distributed correspondingly to the first burners.

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

the notch is in a long strip shape, and the central axis of the notch is collinear with the central axes of the feeding part and the melting part at the bottom of the tank.

The separation cover comprises separation walls which are distributed along three sides of the notch and are correspondingly matched with the feeding part and the melting part, a cover top is arranged on the separation walls in a spanning mode, and the separation walls and the cover top are of an integrated structure.

Utility model advantage:

the utility model discloses simple structure, convenient to use under not changing heating process condition, improve the melting furnace productivity through increasing the melting furnace width, are convenient for again simultaneously maintain and give off of heat in the cavity.

Description of the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

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

FIG. 3 is a cross-sectional view B-B of FIG. 1;

fig. 4 is a cross-sectional view taken along line C-C of fig. 1.

The specific implementation mode is as follows:

1-4, a stand-alone wide melt melter for electronic display glass production includes a melter 1 having a width that is twice that of the original melter 1.

The melting furnace 1 is internally divided into a feeding part 1a, a melting part 1b and a clarifying part 1c along the flowing direction of molten glass 12, a group of first heating electrodes 2 are symmetrically arranged on the wall of the melting part 1b which is melted below the liquid level of the molten glass 12, and the group of first heating electrodes 2 are divided into two rows and symmetrically distributed on the wall of the melting furnace at two sides.

A group of first burners 5 are also arranged on the wall of the melting part 1b above the liquid level of the molten glass 12, and the group of first burners 5 are divided into two rows and symmetrically distributed on the wall of the melting furnace at two sides. A smoke outlet 9 is also arranged on the melting furnace breast wall 11 above the first combustor 5. And a crown 13 is spanned on the melting furnace breast wall 11. The first burners 5 are horizontally distributed above the liquid level of the molten glass 12.

The bottom of the feeding portion 1a and the melting portion 1b is provided with a notch 6, the central axis of the notch 6 is collinear with the central axes of the feeding portion 1a and the melting portion 1b, and the horizontal end of the notch 6 communicated with the outside is positioned on one side of the feeding portion 1 a.

The gap 6 is provided with a separating cover 3, the separating cover 3 comprises a separating wall 3a which is distributed along three edges of the gap 6 and is correspondingly matched with the bottom of the feeding part 1a and the melting part 1b, and a cover top 3b is arranged on the separating wall 3a in a spanning manner. The separating cover 3 is integrated into a reversed porch structure with an opening at one end and a sealed cover top at the other end. A cavity 4 having one end communicating with the outside is formed by the gap 6 in the partition cover 3, and the end is located on the charging portion 1a side. The gap 6 provides a convenient service for maintenance to be performed on the second burner 8 and the second heating electrode 7 mentioned below. The partition wall 3a and the cover top 3b are of an integrated structure.

The feed portion 1a and the melting portion 1b are divided into a first feed portion a, a first melting portion c, a second feed portion b, and a second melting portion d, which have the same area, on the left and right sides by the partition cover 3 and the notch 6.

A row of second heating electrodes 7 corresponding to the first heating electrodes 2 is provided on the partition walls 3a in the range of the first melting portion c and the second melting portion d, respectively. Second burners 8 are also provided on the partition wall 3a above the second heating electrode 7, and are distributed in correspondence with the first burners 5. The first combustor 5 and the second combustor 8 are oxygen-enriched gas guns.

The wavy line in the figure is a schematic line of the current between the first heating electrode 2 and the second heating electrode 7.

The raw materials enter two parts of the feeding part 1a at the same time, then flow into two melting parts 1b to be heated at the same time, finally flow into the same clarifying part 1c, and flow into the next working procedure from the clarifying part after being clarified in the clarifying part 1 c.

Claims

1. The utility model provides a porch formula widescrow melting furnace for electronic display glass production, it includes melting furnace (1), divide into charging portion (1 a), melting portion (1 b) and clarification portion (1 c) along the glass liquid flow direction in melting furnace (1), on the pool wall of melting portion (1 b), the symmetry is equipped with a set of first heating electrode (2), and still the symmetry is equipped with its characterized in that of a set of first combustor (5): be equipped with breach (6) on reinforced portion (1 a) and melting portion (1 b) bottom of the pool, be equipped with on breach (6) and separate cover (3), separate cover (3) and breach (6) form cavity (4) with external intercommunication, breach (6) and the horizontal end of external intercommunication are located reinforced portion (1 a) one side, are equipped with a set of second heating electrode (7) that correspond the distribution with first heating electrode (2) on separating cover (3) to and correspond second combustor (8) that distribute with first combustor (5).

2. A vestibule-type wide body furnace for electronic display glass production as claimed in claim 1 wherein: the notch (6) is in a long strip shape, and the central axis of the notch (6) is collinear with the central axes of the bottom of the feeding part (1 a) and the melting part (1 b).

3. A vestibule-type wide body furnace for electronic display glass production as claimed in claim 1 wherein: the separating cover (3) comprises separating walls (3 a) which are distributed along three sides of the notch (6) and are correspondingly matched with the bottom of the feeding part (1 a) and the melting part (1 b), and a cover top (3 b) is arranged on the separating walls (3 a) in a spanning mode, wherein the separating walls (3 a) and the cover top (3 b) are of an integrated structure.