CN217972972U - Glass melting furnace - Google Patents

Abstract

The utility model discloses a glass melting furnace. The glass melting furnace comprises a furnace chamber, a furnace bank and an air cooling system, wherein the furnace chamber comprises a bottom wall; the kiln ridge is convexly arranged on the bottom wall, the kiln ridge defines a cooling cavity, the cooling cavity extends downwards to penetrate through the bottom wall and forms a first opening, and the cooling cavity is communicated with outside air through the first opening; the air cooling system penetrates through the first opening and comprises an air outlet, the air outlet is located in the cooling cavity at least to form air flow for cooling, and the air flow can be discharged from the first opening at least. The utility model provides a hot gas flow inside the weir of glass melting furnace can be followed first opening and discharged, has greatly shortened the discharge path's of cooling medium length for the gaseous change speed in the cooling chamber can obtain better cooling effect.

Description

Glass melting furnace

Technical Field

The utility model belongs to the technical field of the glass manufacturing technique and specifically relates to a glass melting furnace.

Background

In the related technology, the kiln bank is an important separation structure in the glass melting kiln, can effectively control convection and backflow of glass liquid in the kiln, plays an important role in improving glass quality and stabilizing the flow velocity of liquid flow in the kiln, and is widely applied to certain special glass kilns. In the use process of the weir, as the temperature of the glass liquid is about 1500 ℃, the convection of the glass liquid is severe, the weir protrudes out of the bottom of the pool, three sides of the weir are soaked in the glass liquid, and the erosion of the weir by the glass liquid is serious. In the prior art, cooling is performed by adopting cooling water bags, cooling air and the like, but due to the problem of kiln ridge structural design, the moving path of a cooling medium is longer, the cooling effect is poor, and the service life of the kiln is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a glass melting furnace, the hot gas flow can be followed first opening and discharged, has greatly shortened the length of the discharge route of cooling medium for the gaseous change speed in the cooling chamber can obtain better cooling effect.

According to the utility model discloses a glass melting furnace of first aspect embodiment includes:

a kiln chamber comprising a bottom wall;

the kiln bank is convexly arranged on the bottom wall, a cooling cavity is defined by the kiln bank, the cooling cavity extends downwards to penetrate through the bottom wall and forms a first opening, and the cooling cavity is communicated with external air through the first opening;

the air cooling system penetrates through the first opening and comprises an air outlet, the air outlet is located in the cooling cavity to form air flow for cooling, and the air flow can be discharged from the first opening at least.

According to the utility model discloses glass melting furnace has following beneficial effect at least: this application runs through the first opening of diapire through the setting for the hot gas flow can be followed first opening and discharged, has greatly shortened the discharge path's of cooling medium length, has accelerated the change speed of gas in the cooling chamber, can obtain better cooling effect. In addition, as the bottom of the kiln bank is communicated with the external environment, an operator can observe the operation condition of the kiln bank through the first opening at any time during the operation of the kiln, and if the inner wall of the kiln bank has cracks or is corroded, the kiln bank can be repaired in time or the use of the kiln bank can be stopped in time, so as to avoid greater property loss.

According to some embodiments of the utility model, the both ends of weir extend to respectively with the lateral wall of the both sides of kiln room is connected, the cooling chamber orientation the length direction of weir extends and runs through the lateral wall, with respectively in both sides form second opening and third opening on the lateral wall, the air current can be followed the second opening with the third opening is discharged.

According to some embodiments of the utility model, the kiln bank includes a first supporting part and two second supporting parts, two the second supporting part sets up side by side, and each the one end of second supporting part connect in the diapire, the other end upwards extends in order to support first supporting part.

According to the utility model discloses a some embodiments, first supporting part is formed by the concatenation of the first kiln brick of polylith, each the both ends of first kiln brick are provided with first convex part and first concave part respectively, first kiln brick first convex part and adjacent first kiln brick first concave part is pegged graft to it is adjacent each form first seam of tortuous between the first kiln brick.

According to the utility model discloses a some embodiments, the quantity of air outlet is no less than the quantity of first kiln brick to make each first kiln brick corresponds at least and is provided with one the air outlet.

According to some embodiments of the utility model, the weir includes the third supporting part, the third supporting part laminate in the lateral wall setting of second supporting part, the second supporting part includes polylith second kiln brick, the third supporting part includes polylith third kiln brick, and is adjacent form the second seam between the second kiln brick, and is adjacent form the third seam between the third kiln brick, the second seam with the crisscross setting of third seam.

According to some embodiments of the present invention, the top surface of the third kiln brick is higher than the top surface setting of the second kiln brick.

According to some embodiments of the present invention, the bottom wall comprises a plurality of fourth bricks, adjacent to each other with an expansion gap between the fourth bricks.

According to some embodiments of the utility model, it is adjacent still injectd the recess to fourth kiln brick, the expansion gap intercommunication the recess, the diapire still includes polylith fifth kiln brick, fifth kiln brick set up in the recess, in order to seal the expansion gap.

According to some embodiments of the utility model, the fifth kiln brick along width direction's lateral wall with there is interval A in the lateral wall of recess, the width in expansion gap is B, interval A has following relation:

additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

FIG. 1 is a schematic structural view of a glass melting furnace according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along direction A of FIG. 1;

FIG. 3 is an enlarged view of region B of FIG. 1;

FIG. 4 is an enlarged view of area C of FIG. 2;

fig. 5 is a top view of a weir in an embodiment of the present invention;

fig. 6 is an enlarged schematic view of a region D in fig. 5.

Reference numerals:

a bottom wall 100, a fourth kiln brick 110, an expansion gap 111, a groove 112, a fifth kiln brick 120;

the kiln bank 200, the first support part 210, the first kiln brick 211, the first convex part 212, the first concave part 213, the first joint 214, the second support part 220, the second kiln brick 221, the second joint 222, the fourth joint 223, the third support part 230, the third kiln brick 231, the third joint 232, the fourth support part 240, the cooling cavity 250, the first opening 260, the second opening 270, and the third opening 280;

air cooling system 300, air outlet 310.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The application provides a glass melting furnace, as shown in fig. 1 and fig. 2, which mainly comprises a furnace chamber (only the bottom of the furnace chamber is shown in fig. 2), a kiln bank 200 and an air cooling system 300, wherein the furnace chamber can form a relatively closed space in the furnace, so that the glass melting furnace can keep a higher temperature to melt glass liquid. The chamber includes a bottom wall 100, and molten glass is deposited and layered on the bottom wall 100. The weir 200 is used as a separation structure in the glass melting furnace, can effectively prevent the backflow of the glass liquid, stabilizes the circulation of the glass liquid, and plays a role in stabilizing the glass liquid. The weir 200 is convexly arranged on the bottom wall 100, and the glass liquid flowing over the weir 200 is beneficial to discharging bubbles due to the shallow effect, so that the clarification speed of the glass liquid is greatly increased, and the quality of the glass liquid is improved. The cooling cavity 250 is defined in the kiln bank 200, and the supercooling cavity 250 can exchange heat with the kiln bank 200 to further cool the kiln bank 200, so that the erosion of the high temperature of the molten glass to the kiln bank 200 is slowed down. The cooling cavity 250 extends downward to penetrate through the bottom wall 100, a first opening 260 is formed in the bottom wall 100, the cooling cavity 250 is communicated with the outside air through the first opening 260, the air cooling system 300 comprises an air outlet 310, and at least the air outlet 310 is located in the cooling cavity 250.

Specifically, the air cooling system 300 includes a fan and an air outlet pipe, the air outlet pipe is provided with an air outlet 310, the fan can provide wind power for the air outlet pipe, so that the air outlet 310 forms a cold airflow blowing into the cooling cavity 250, and then, after the cold airflow enters the cooling cavity 250, heat exchange occurs with the high-temperature cavity wall of the cooling cavity 250, the cold airflow is heated to a hot airflow carrying a large amount of heat energy, the high-temperature kiln ridge 200 can be cooled, and then the hot airflow escapes from the first opening 260 on the lower side and is discharged into the air. The airflow flows through the cooling cavity 250 after being blown out from the air outlet 310 and then escapes from the first opening 260, the moving stroke of the airflow is short, the gas in the cooling cavity 250 can be quickly replaced to take away the heat of the kiln bank 200, and the cooling effect is good.

Compare in the water-cooling, the water cooling system can't cover on the inner wall of whole weir 200, can only carry out local cooling, and the air cooling system 300 that this application used can last and change the gas in the cooling chamber 250 rapidly, realizes the cooling to whole chamber wall. Compared with the traditional method that the openings are arranged at the two ends of the kiln bank 200 in the length direction to realize heat exchange, the length of the kiln bank 200 is far greater than the height of the kiln bank 200, the method has the advantages that the moving path of the cooling medium is long, and the cooling efficiency is low. This application has greatly shortened the discharge path's of cooling medium (like the air current of this application) length through setting up the first opening 260 that runs through diapire 100 for the change speed of gas in the cooling chamber 250 can obtain better cooling effect. In addition, since the bottom of the weir 200 is communicated with the external environment, an operator can observe the operation condition of the weir 200 through the first opening 260 at any time during the operation of the kiln, and if the inner wall of the weir 200 has cracks or is eroded, the weir 200 can be repaired in time or the use of the weir 200 can be stopped in time, so as to avoid greater property loss.

In some embodiments, the ends of the weir 200 extend to connect with the side walls of the kiln chamber, dividing the bottom wall 100 of the chamber into two regions. Referring to fig. 1, the cooling chamber 250 extends toward the length direction of the weir 200 and penetrates the side walls of the kiln chamber to form second and third openings 270 and 280 on the side walls of both sides, respectively, and the air flow can be discharged from the second and third openings 270 and 280. Furthermore, three sides of the cooling cavity 250 are communicated with the outside, and the airflow blown out from the air outlet pipe can flow out from the first opening 260, the second opening 270 and the third opening 280 respectively with heat, so that the communication area of the cooling cavity 250 and the outside air is further increased, namely the discharge area of hot airflow is increased.

As shown in fig. 2, the weir 200 includes a first supporting portion 210 and two second supporting portions 220, the two second supporting portions 220 are disposed in parallel, and one end of each second supporting portion 220 is connected to the bottom wall 100, and the other end extends upward to support the first supporting portion 210. The first and second support portions 210 and 220 overlap each other to form the weir 200 and define a cooling chamber 250. Further, the first supporting portion 210 is formed by splicing a plurality of first kiln bricks 211, and the first kiln bricks 211 can be electric-melting high-zirconium bricks or electric-melting AZS bricks, and can resist corrosion and high temperature. As shown in fig. 3, two ends of each first kiln brick 211 are respectively provided with a first convex portion 212 and a first concave portion 213, the first convex portion 212 of the previous first kiln brick 211 is inserted into the first concave portion 213 of the next first kiln brick 211, each first kiln brick 211 is sequentially connected to form an upper end portion of the kiln sill 200, the first convex portion 212 protrudes from an end surface of the first kiln brick 211, the first concave portion 213 is partially recessed into the end surface of the first kiln brick 211, and then the first convex portion 212 and the first groove 112 are matched to form a first zigzag seam 214. The tortuous first seam 214 may have better erosion resistance than a straight seam, thereby providing a longer life span for the weir 200.

Further, as shown in fig. 1, the number of the air outlets 310 is not less than that of the first kiln bricks 211, so that each first kiln brick 211 is at least correspondingly provided with one air outlet 310, and then the inner wall of each first kiln brick 211 can be blown to by airflow, thereby reducing the possibility of over-high local expansion caused by over-high local temperature of the kiln bricks.

Since the second supporting portion 220 is a supporting pillar of the kiln sill 200 and bears the weight of the first supporting portion 210, if the second supporting portion 220 is corroded, the structural strength of the second supporting portion 220 is affected, so that the bridge structure is unstable, and the service life of the kiln sill 200 is greatly shortened. Since the first support part 210 is covered on the second support part 220, a linear fourth joint 223 is formed between the bottom surface of the first support part 210 and the top surface of the second support part 220, and the linear joint is easily corroded by high temperature, thereby destroying the stable state of the kiln bank 200. Therefore, as shown in fig. 2, the weir 200 further includes a third supporting portion 230, the third supporting portion 230 is disposed to be attached to an outer side wall of the second supporting portion 220, and a height of the third supporting portion 230 is at least higher than that of the second supporting portion 220, that is, a top surface of the third kiln brick 231 is higher than that of the second kiln brick 221, so that the third supporting portion 230 can cover and shield the fourth joint 223, and the weir 200 is prevented from being eroded from the fourth joint 223, thereby improving stability of the overall structure. And the third support part 230 is provided, so that the support area for supporting the first support part 210 is large, and even if the second support part 220 or the third support part 230 is expanded and deformed at a high temperature, the inclination or collapse is not easily generated.

In addition, the third support 230 may prevent the second joint 222 of the second support 220 itself from being exposed to the high-temperature molten glass, in addition to preventing the fourth joint 223 from being exposed to the high-temperature molten glass. Specifically, as shown in fig. 6, it should be noted that a dotted line in fig. 6 shows a second support portion 220, the second support portion 220 includes a plurality of second kiln bricks 221, the third support portion 230 includes a plurality of third kiln bricks 231, a second joint 222 is formed between adjacent second kiln bricks 221, a third joint 232 is formed between adjacent third kiln bricks 231, the second joint 222 and the third joint 232 are arranged in a staggered manner, and further, the second joint 222 is covered and shielded by the third kiln bricks 231 of the third support portion 230, even if the third joint 232 is eroded, the structural strength of the weir 200 is not greatly affected. It can be understood that a fourth supporting portion 240 as shown in fig. 2 and 6 may be further provided, along the width direction of the weir 200, the second supporting portion 220, the third supporting portion 230 and the fourth supporting portion 240 are sequentially attached to each other, the fourth supporting portion 240 includes a plurality of kiln bricks, a joint is formed between adjacent kiln bricks, and the joint and the third joint 232 are staggered; based on the thought, a fifth supporting part, a sixth supporting part and the like can be further arranged, the erosion resistance of the kiln bank 200 can be enhanced, and the steps are not exhaustive one by one.

As shown in fig. 2 and 4, the bottom wall 100 includes a plurality of fourth kiln bricks 110, and if adjacent fourth kiln bricks 110 are closely joined, the fourth kiln bricks 110 may be pressed against each other after being thermally expanded so that the fourth kiln bricks 110 are turned up. In consideration of the expansion amount by thermal expansion, when the fourth kiln bricks 110 are laid, the adjacent fourth kiln bricks 110 are spaced apart to form expansion gaps 111 between the adjacent fourth kiln bricks 110 to allow a small amount of expansion displacement of the fourth kiln bricks 110. And the expansion gap 111 is provided as close to the arrangement region of the second support part 220 as possible to prevent the inclination of the second support part 220 caused by the expansion displacement of the fourth kiln brick 110 abutting against the second support part 220.

Further, as shown in fig. 4, in order to close the expansion gap 111, a groove 112 is further defined by adjacent fourth bricks 110, the expansion gap 111 is communicated with the groove 112, the bottom wall 100 further comprises a plurality of fifth bricks 120, the fifth bricks 120 are disposed in the groove 112 and further cover the expansion gap 111, so as to prevent the expansion gap 111 from being communicated with the melting chamber of the kiln chamber, and further avoid leakage of high-temperature molten glass. It should be noted that the fifth kiln brick 120 cannot be arranged to fill the groove 112, otherwise the fifth kiln brick 120 is extruded when the fourth kiln brick 110 is heated to expand, there is a distance a between the side wall of the fifth kiln brick 120 in the width direction and the side wall of the groove 112, the width of the expansion gap 111 is B, and the following relationship exists between the distance a of the side wall and the width B of the expansion gap 111:

the embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A glass melting furnace, comprising:

a kiln chamber comprising a bottom wall;

the kiln bank is convexly arranged on the bottom wall, a cooling cavity is defined by the kiln bank, the cooling cavity extends downwards to penetrate through the bottom wall and forms a first opening, and the cooling cavity is communicated with external air through the first opening;

the air cooling system penetrates through the first opening and comprises an air outlet, the air outlet is located in the cooling cavity to form air flow for cooling, and the air flow can be discharged from the first opening at least.

2. The glass melter of claim 1, wherein both ends of the weir extend to be connected to side walls of both sides of the furnace chamber, respectively, and the cooling chamber extends toward a length direction of the weir and penetrates the side walls to form a second opening and a third opening on the side walls of both sides, respectively, and the air flow can be discharged from the second opening and the third opening.

3. The glass melter of claim 1 wherein the weir includes a first support portion and two second support portions, the two second support portions being juxtaposed and each of the second support portions having one end connected to the bottom wall and the other end extending upwardly to support the first support portion.

4. The glass melter of claim 3 wherein the first support portion is formed from a plurality of first bricks joined together, each first brick having a first protrusion and a first recess disposed at each end, the first protrusion of a first brick and the first recess of an adjacent first brick being spliced together to form a first zigzag seam between each adjacent first brick.

5. The glass melter of claim 4 wherein the number of air outlets is not less than the number of first melter bricks, such that each first melter brick is correspondingly provided with at least one air outlet.

6. The glass melter of claim 3 wherein the weir comprises a third support portion disposed adjacent an outer sidewall of the second support portion, the second support portion comprising a plurality of second melter bricks, the third support portion comprising a plurality of third melter bricks, a second seam formed between adjacent second melter bricks, a third seam formed between adjacent third melter bricks, the second seam and the third seam being staggered.

7. The glass melter of claim 6 wherein the top surface of the third melter block is disposed higher than the top surface of the second melter block.

8. The glass melter of claim 1 wherein the bottom wall comprises a plurality of fourth bricks, and wherein expansion gaps exist between adjacent fourth bricks.

9. The glass melter of claim 8 wherein adjacent fourth bricks further define a recess, said expansion gap communicating with said recess, said bottom wall further comprising a plurality of fifth bricks disposed in said recess to close said expansion gap.

10. The glass melter of claim 9, wherein the melting furnace is characterized byThe side wall of the fifth kiln brick along the width direction has a distance A with the side wall of the groove, the width of the expansion gap is B, and the distance A has the following relation:

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