CN110746091A - Large arch structure capable of preventing glass defect caused by flow of kiln large arch coagulum - Google Patents
Large arch structure capable of preventing glass defect caused by flow of kiln large arch coagulum Download PDFInfo
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- CN110746091A CN110746091A CN201910937062.8A CN201910937062A CN110746091A CN 110746091 A CN110746091 A CN 110746091A CN 201910937062 A CN201910937062 A CN 201910937062A CN 110746091 A CN110746091 A CN 110746091A
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- arch
- brick
- crown
- bricks
- crown structure
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
- C03B5/43—Use of materials for furnace walls, e.g. fire-bricks
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a crown structure capable of preventing glass defects caused by the flowing of a large crown condensate of a kiln, wherein each arch unit is contracted into an arch surface at the lower end surface of any crown brick close to a crown foot brick to form a crown drip channel, the side surfaces of a plurality of same arch units are sequentially connected to form the large crown structure, and the crown drip channel is formed on the arch surface (working surface) at the lower end of the large crown structure. The main crown coagulum is basically a refractory material flow formed by erosion, evaporation and condensation of refractory materials under the action of various chemical atmospheres of a kiln, and the flow can not fall into molten glass along the vertical direction due to friction force caused by the surface roughness of the crown bricks after the working surface of the crown bricks is formed.
Description
Technical Field
The invention belongs to the field of glass kilns, and particularly relates to a crown structure capable of preventing glass defects caused by the flowing of coagula of a crown of a kiln.
Background
The glass product has been widely used in the display field, has no support of the glass industry, the development of the display device industry is unthinkable, although other materials can replace the glass material in partial use occasions, the glass product still has no excellent performance, from the traditional color kinescope industry to the current flat panel display industry, the glass has been used as a key component to play a key role in the display device, actually, a frame and a carrier of the whole device and an optical element are used as an upper substrate and a lower substrate of the flat panel display device, a fine microscopic semiconductor process processing procedure is needed, undoubtedly, the requirements on the purity and the uniformity of the glass material are extremely high, and the glass product is very sensitive to various impurities and impurities in molten glass. How to reduce inclusions is always an important issue.
During the manufacturing process of the glass substrate, the glass material is firstly put in a kiln for melting, clarifying and homogenizing, and qualified and homogeneous glass liquid is provided for the next working procedure. The glass liquid melted by the kiln is alkali-free high-alumina borosilicate glass, and the glass product is mainly a glass substrate for flat panel display.
The glass substrate can not have any defect points including defects of bubbles, stones, precious metals, heterogeneous glass particles and the like before being used for the flat display glass. The concretion (refractory stone) is basically caused by erosion, evaporation and condensation of refractory materials in the kiln, and high-temperature concretion of the crown of the kiln often flows into molten glass through the arch surface of the crown to cause the defects of glass substrate concretion, so that a drip trough structure for preventing the concretion of the crown of the kiln from flowing is needed to be designed to solve the defects.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the crown structure which can prevent the glass defect caused by the flowing of the coagulant of the crown of the kiln, and can avoid the problem of poor defect of glass-based stone hardening caused by the dropping of the coagulant of the crown of the kiln into molten glass.
In order to solve the technical problems, the invention solves the problems by the following technical scheme:
a crown structure capable of preventing glass defects caused by the flowing of kiln crown concretions comprises a plurality of same arch units, wherein the side surfaces of adjacent arch units are sequentially connected to form the crown structure; each arch unit comprises two arch foot bricks, a lock brick and a plurality of arch bricks, wherein the lock brick is positioned in the middle of the arch unit, and the two arch foot bricks are respectively positioned at two ends of the arch unit; and a plurality of arch bricks are arranged between each arch foot brick and the lock brick, the side surfaces of two adjacent arch bricks are sequentially connected, the lower end surface of the lock brick and the lower end surfaces of the plurality of arch bricks are positioned on the same arch surface, and the lower end surface of any arch brick close to the arch foot bricks is contracted into the arch surface to form an arch drip groove.
Further, the lower end surface of any arch brick in the third to the fifth arch bricks close to the arch foot brick is retracted into the arch surface to form an arch drip groove.
Furthermore, fourteen arch bricks are arranged between each arch foot brick and the lock brick, and the lower end surface of the fourth arch brick close to the arch foot brick is contracted into an arch surface to form an arch drip groove.
Further, each of the arch bricks is the same size, and the depth of the arch drip groove is not greater than 1/10 of the arch brick height.
Furthermore, each arch brick is of a wedge-shaped structure, the lower end face of each arch brick is a small end face, and the upper end face of each arch brick is a large end face.
Furthermore, the thickness d of the arch brick is more than 85mm and less than 95mm, and the thickness of the lower end surface of the arch brick is 8-10 mm smaller than that of the upper end surface.
Further, the two arch foot bricks are symmetrically arranged relative to the central line of the lock brick.
Furthermore, the arch foot brick, the lock brick and the arch brick are all made of re-sintered mullite.
Compared with the prior art, the invention has at least the following beneficial effects: the invention relates to a big arch structure capable of preventing glass defects caused by the flowing of the coagulants of the big arch of a kiln. The main crown coagulum is basically a refractory material flow formed by erosion, evaporation and condensation of refractory materials under the action of various chemical atmospheres of a kiln, and the flow can not fall into molten glass along the vertical direction due to friction force caused by the surface roughness of the crown bricks after the working surface of the crown bricks is formed. Namely, the coagulates of the main crown of the kiln on the arch surface can flow and gather in the crown drip channel, namely, the crown drip channel can gather the coagulates on the coagulation arch surface, thereby preventing the coagulates of the main crown of the kiln from flowing into the glass liquid to cause the defects of glass substrate stones. In addition, due to the existence of the arch drip groove, about 2mm allowance is reserved for the horizontal expansion of the main arch in the temperature rising process, the adjacent arch bricks are prevented from being extruded and cracked by the expansion in the temperature rising process of the arch brick kiln, meanwhile, the locking force of the arch bricks and the arch bricks is improved in the temperature rising expansion process, and the defect that the glass substrate generates stones due to the falling of the arch bricks is avoided.
Further, in the process of simulating the glass liquid of the substrate glass kiln, the glass liquid in the kiln flows into the platinum channel through the throat pipe of the rear tank wall, the glass liquid at the middle position of the kiln is taken as the main stream, and the lead-out amount of the kiln is basically provided by the glass liquid at the middle position; the molten glass close to the tank walls on the two sides is basically in a standing state, the flow speed is very low, and the molten glass on the two sides of the tank walls basically faces the arch bricks of the 3 rd to the 5 th rows of the kiln crown, so that the crown drip groove is designed at the position, and even if condensate drips, the defect of stone of a water product flowing on the glass substrate can be avoided to the greatest extent.
Furthermore, each arch brick has the same size, the depth of the arch drip channel is not more than 1/10 of the height of the arch brick, the design is that the height of the arch brick is generally 300mm, the downward gravity center position of each arch brick is about 3/5 (calculated according to the volume and weight of the arch brick) of the height direction of the arch brick, the static friction force between the arch brick and the adjacent arch brick is reduced (because the contact area is reduced) due to the excessively high depth of the arch drip channel, the arch brick is easy to fall into the molten glass of the kiln to cause more serious stone defects, and the strength of the big arch is also influenced.
Furthermore, each arch brick is of a wedge-shaped structure, the lower end face of each arch brick is a small end face, the upper end face of each arch brick is a large end face, the relative motion between the two bricks is restrained by the aid of static friction force between the wedge-shaped blocks, and then after the arch tire is disassembled, the friction force between the adjacent arch bricks is increased in the process of sinking the arch bricks, so that the strength of the large arch is improved.
Furthermore, the thickness of the arch brick is more than 85mm and less than d and less than 95mm, the thickness of the lower end face of the arch brick is 8-10 mm smaller than that of the upper end face, the arch height and the span of the main arch and the distance between the center of the lock brick and a liquid level line are fixed in the process of designing the main arch, and the arch height and the span value of each arch brick are designed and arranged in the process of designing the size of each arch brick.
Furthermore, the two arch foot bricks are symmetrically arranged relative to the central line of the lock brick, and the lock brick is designed on the central line, so that the gravity center positions at two sides can not be shifted, and the locking force borne by the main arch can ensure the strength of the main arch.
Furthermore, the arch foot brick, the lock brick and the arch brick are all made of re-sintered mullite, and have strong chemical corrosion resistance, good thermal shock resistance, difficult cracking and long service life.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of the main arch structure of the present invention;
FIG. 2 is a front view of the arch brick of the present invention;
FIG. 3 is a left side view of the arch brick of the present invention;
FIG. 4 is a top view of the arch brick of the present invention.
In the figure: 1-skewback brick; 2, locking the brick; 3-arch brick; 4-arch drop groove.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As a specific embodiment of the invention, the crown structure capable of preventing glass defects caused by the flowing of the coagula of the crown of the kiln comprises a plurality of same arch units, and the side surfaces of the adjacent arch units are sequentially connected to form the crown structure. As shown in fig. 1, each arch unit comprises two arch foot bricks 1, one lock brick 2 and a plurality of arch bricks 3, the lock brick 2 is located at the middle position of the arch unit, the two arch foot bricks 1 are respectively located at two ends of the arch unit, that is, one arch foot brick 1 is located at one end of the arch unit, and the other arch foot brick 1 is located at the other end of the arch unit; preferably, the two skewback bricks 1 are symmetrically arranged relative to the central line of the lock brick 2.
In each arch unit, a plurality of arch bricks 3 are arranged between each arch foot brick 1 and the lock brick 2, the side surfaces of two adjacent arch bricks 3 are sequentially connected, one side of the arch brick 3 adjacent to the lock brick 2 is connected with the lock brick 2, and one side of the arch brick 3 adjacent to the arch foot brick 1 is connected with the arch foot brick 1.
In the preferred embodiment of the present invention, each arch brick 3 has the same size, and as shown in fig. 2, 3 and 4, each arch brick 3 has a wedge-shaped structure, and the lower end surface of each arch brick 3 is a small end surface and the upper end surface thereof is a large end surface. The thickness d of the arch brick 3 is more than 85mm and less than 95mm, and the thickness of the lower end surface of the arch brick 3 is 8-10 mm less than that of the upper end surface.
As shown in fig. 1, the lower end face of the lock brick 2 and the lower end faces of the plurality of arch bricks 3 are located on the same arch face, and the lower end face of any arch brick 3 close to the arch foot brick 1 retracts into the arch face to form an arch drip groove 4, that is, the arch drip groove 4 is formed between two adjacent arch bricks 3 of the arch brick 3 with the lower end faces retracting into the arch face; preferably, the lower end face of any arch brick 3 in the third to fifth arch bricks 1 is contracted into the arch face to form the arch drip groove 4. In order to ensure the integral strength of the arch brick masonry, the depth of the arch drip groove 4 is not more than 1/10 of the height of the arch brick 3.
The coagulates of the main crown of the kiln on the arch surface can flow and gather in the crown drip groove 4, namely, the coagulates on the coagulation arch surface are gathered by the crown drip groove 4, thereby preventing the coagulates of the main crown of the kiln from flowing into glass liquid to cause the defects of glass substrate stones. In addition, in the process of heating up the kiln, the main arch bricks 3 are heated up and expanded, and the arch drip grooves 4 can also lift the locking force between the arch bricks 3, so that the glass substrate is prevented from generating stone defects caused by falling of the arch bricks 3.
As a specific embodiment of the invention, fourteen arch bricks 3 are arranged between each arch foot brick 1 and the lock brick 2, and an arch drip groove 4 is formed by the lower end surface of the fourth arch brick 3 which is close to the arch foot brick 1 and shrinking into the arch surface. That is, the central line of the lock brick 2 is taken as the central line of the main arch, 14 rows of arch bricks 3 are respectively arranged at two sides of the central line of the main arch, the 4 th row of arch bricks 3 are integrally lifted upwards by 30mm along the height direction, namely, an arch drip channel 4 for preventing condensate from flowing is designed and formed, the depth of the arch drip channel 4 cannot be greater than 1/10 of the overall height of the arch bricks 3, and the locking force of the main arch bricks is prevented from being weaker. When the furnace is used for melting molten glass, coagulates of the main arch of the furnace can flow into the arch drip groove 4 through the arch surface of the main arch, so that the coagulates are prevented from falling into the molten glass, and the defects of glass substrate stones are avoided.
The overall span of the main arch and the specific design size of the arch height related in the main arch structure are designed according to the width size of a glass liquid space of a kiln, the height size of a flue port of a front wall and a rear wall and the height size of an industrial television brick, and specifically, the arch span (L) is equal to the glass liquid space width +2 and the extending length + 2-4 mm of a flame blocking brick of a chest wall; the arch height plus the breast wall height is greater than the height of the back wall industrial television brick; the arch height and the height of the breast wall are more than or equal to the height of the upper edge of the flue port of the front wall.
As a preferred embodiment of the invention, the arch foot brick 1, the lock brick 2 and the arch brick 3 are all made of re-sintered mullite, and the re-sintered mullite has strong chemical corrosion resistance, good thermal shock resistance, difficult cracking and long service life.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A big arch structure capable of preventing glass defects caused by the flowing of the coagulants of the big arch of a kiln is characterized in that: the arch structure comprises a plurality of same arch units, wherein the side surfaces of adjacent arch units are sequentially connected to form a big arch structure; each arch unit comprises two arch foot bricks (1), a lock brick (2) and a plurality of arch bricks (3), wherein the lock brick (2) is positioned in the middle of the arch unit, and the two arch foot bricks (1) are respectively positioned at two ends of the arch unit; a plurality of arch bricks (3) are arranged between each arch foot brick (1) and the lock brick (2), the side surfaces of two adjacent arch bricks (3) are sequentially connected, the lower end surface of the lock brick (2) and the lower end surfaces of the plurality of arch bricks (3) are positioned on the same arch surface, and the lower end surface of any arch brick (3) close to the arch foot bricks (1) is retracted into the arch surface to form an arch drip groove (4).
2. The crown structure of claim 1, wherein the crown structure is configured to prevent glass defects caused by flow of crown condensate from the furnace, the crown structure comprising: the lower end surface of any arch brick (3) of the third to the fifth arch bricks (1) is contracted into an arch surface to form an arch drip groove (4).
3. The crown structure of claim 1, wherein the crown structure is configured to prevent glass defects caused by flow of crown condensate from the furnace, the crown structure comprising: fourteen arch bricks (3) are arranged between each arch foot brick (1) and the lock brick (2), and an arch drip groove (4) is formed by the lower end surface of the fourth arch brick (3) close to the arch foot bricks (1) shrinking into an arch surface.
4. The crown structure of claim 1, wherein the crown structure is configured to prevent glass defects caused by flow of crown condensate from the furnace, the crown structure comprising: the sizes of the arch bricks (3) are the same, and the depth of the arch drip groove (4) is not more than 1/10 of the height of the arch bricks (3).
5. The crown structure of claim 1, wherein the crown structure is configured to prevent glass defects caused by flow of crown condensate from the furnace, the crown structure comprising: each arch brick (3) is of a wedge-shaped structure, the lower end face of each arch brick (3) is a small end face, and the upper end face of each arch brick is a large end face.
6. The crown structure of claim 4, wherein the crown structure is configured to prevent glass defects caused by flow of crown condensate from the furnace, and further configured to: the thickness d of the arch brick (3) is more than 85mm and less than 95mm, and the thickness of the lower end surface of the arch brick (3) is 8-10 mm less than that of the upper end surface.
7. The crown structure of claim 1, wherein the crown structure is configured to prevent glass defects caused by flow of crown condensate from the furnace, the crown structure comprising: the two arch foot bricks (1) are symmetrically arranged relative to the central line of the lock brick (2).
8. The crown structure of claim 1, wherein the crown structure is configured to prevent glass defects caused by flow of crown condensate from the furnace, the crown structure comprising: the arch foot brick (1), the lock brick (2) and the arch brick (3) are all made of re-sintered mullite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910937062.8A CN110746091A (en) | 2019-09-29 | 2019-09-29 | Large arch structure capable of preventing glass defect caused by flow of kiln large arch coagulum |
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| CN201910937062.8A CN110746091A (en) | 2019-09-29 | 2019-09-29 | Large arch structure capable of preventing glass defect caused by flow of kiln large arch coagulum |
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| CN110746091A true CN110746091A (en) | 2020-02-04 |
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| CN201910937062.8A Pending CN110746091A (en) | 2019-09-29 | 2019-09-29 | Large arch structure capable of preventing glass defect caused by flow of kiln large arch coagulum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480142A (en) * | 2021-07-21 | 2021-10-08 | 甘肃旭康材料科技有限公司 | Glass kiln |
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Application publication date: 20200204 |