Glass kiln

Abstract

The utility model relates to the technical field of glass manufacturing, in particular to a glass kiln. The glass kiln comprises a pool bottom, a front wall, a rear wall, side walls and an arch top, the front wall, the rear wall and at least two side walls surround the pool bottom in the circumferential direction, the arch top covers the top ends of the front wall, the side walls and the rear wall and forms a kiln cavity of the glass kiln in a surrounding mode, a feeding port communicated with the kiln cavity is formed in the front wall, and a discharging port communicated with the kiln cavity is formed in the rear wall. A first heating piece is mounted on the side wall; a second heating piece is mounted in a high-temperature area in the middle of the pool bottom. The second heating piece is mounted in the high-temperature area in the middle of the pool bottom, and the second heating piece further heats the glass raw material entering the high-temperature area while the first heating piece heats the glass raw material, so that the heating temperature of the high-temperature area is increased, and the situation that the glass raw material, a half-cooked material and molten glass are mixed together and flow out of the discharge port is avoided; and the melting effect and the clarifying effect of the glass raw material are improved, so that the yield of molten glass is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glass manufacturing, in particular to a glass furnace. Background Art

[0002] A glass furnace generally includes a crown, a bottom, a front wall, a rear wall, and side walls surrounding the bottom. Electrode bricks and burners are installed on the two side walls in the width direction of the glass furnace to achieve two heating modes of electric heating and oxy-fuel combustion heating in the furnace cavity. The raw glass material enters the furnace cavity from the feeding port and is melted under the high temperature of the two heating modes to form transparent, pure, and uniform glass liquid. The glass liquid then flows out from the discharging port and enters the next process.

[0003] After the glass furnace is started, the raw glass material continuously flows into the furnace cavity from the feeding port and flows out from the discharging port. The raw glass material is heated and melted during the flowing process in the furnace cavity. The problem of the existing glass furnace is that with the improvement of production efficiency and feeding amount, some raw glass materials in the furnace cavity flow out from the discharging port before being completely heated. There is often a situation where the raw glass materials, undercooked materials, and molten glass liquid are mixed and flow out from the discharging port, resulting in unsatisfactory melting and clarification effects, and further affecting the yield rate of the glass liquid. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a glass furnace to improve the melting and clarification effects of the raw glass materials in the glass furnace and improve the yield rate of the glass liquid.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0006] A glass furnace, comprising a bottom, a front wall, a rear wall, side walls, and a crown. The front wall, the rear wall, and at least two side walls are circumferentially arranged around the bottom. The crown covers the tops of the front wall, the side walls, and the rear wall and encloses to form the furnace cavity of the glass furnace. The front wall is provided with a feeding port communicating with the furnace cavity, the rear wall is provided with a discharging port communicating with the furnace cavity, a first heating element is installed on the side wall, and a second heating element is installed in the high-temperature area in the middle of the bottom.

[0007] As an optional scheme of the glass furnace, the second heating element protrudes from the inner surface of the high-temperature area.

[0008] As an optional scheme of the glass furnace, the height of the top surface of the second heating element is 30 mm greater than the height of the inner surface of the high-temperature area.

[0009] As an optional scheme of the glass furnace, the second heating element is an electrode brick, and the electrode brick is laid on the inner surface of the high-temperature area.

[0010] As an alternative to the glass furnace, a buffer wall is provided on the side wall extending towards the interior of the furnace cavity, and the bottom of the buffer wall is connected to the bottom of the tank.

[0011] As an alternative to the glass furnace, at least one of the buffer walls is located at one end of the high-temperature zone close to the front wall.

[0012] As an alternative to the glass furnace, two buffer walls are provided on the side wall extending towards the interior of the furnace cavity. One buffer wall is located at one end of the high-temperature zone close to the front wall, and the other buffer wall is located at one end of the high-temperature zone close to the rear wall.

[0013] As an alternative to the glass furnace, the length of the buffer wall extending into the furnace cavity is 25 mm to 35 mm.

[0014] As an alternative to the glass furnace, a dam is provided on the bottom of the tank, and both sides of the dam in the width direction are respectively connected to two side walls oppositely arranged along the width direction of the bottom of the tank.

[0015] As an alternative to the glass furnace, the height of the dam is 7 m to 9 m.

[0016] The beneficial effects of the present utility model are as follows:

[0017] For the glass furnace proposed by the present utility model, a second heating element is installed in the high-temperature zone in the middle of the bottom of the tank. While the first heating element is heating, the second heating element further heats the glass raw material entering the high-temperature zone, increasing the heating temperature in the high-temperature zone, improving the melting effect of the glass raw material, avoiding the situation where the glass raw material, undercooked material and molten glass liquid are mixed together and flow out from the discharge port, improving the melting effect and clarification effect of the glass raw material in the glass furnace, and thus improving the yield rate of the glass liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view of the internal structure of the glass furnace provided by the embodiment of the present utility model;

[0019] Figure 2 is the top view of the internal structure of the glass furnace provided by the embodiment of the present utility model.

[0020] The names and reference numerals of the components in the figure are as follows:

[0021] 10, furnace cavity; 1, bottom of the tank; 11, high-temperature zone; 12, discharge opening; 2, front wall; 21, feeding opening; 3, rear wall; 31, outlet; 4, side wall; 5, arch crown; 6, first heating element; 7, second heating element; 8, buffer wall; 9, dam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the technical problems solved, the technical solutions adopted, and the achieved technical effects of the present utility model clearer, the technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings rather than all of them.

[0023] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the", and "on the" second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the", and "under the" second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0025] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", and "left" are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0026] The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments.

[0027] Such as Figure 1 and Figure 2As shown in the figure, this embodiment proposes a glass furnace, which includes a bottom 1, a front wall 2, a rear wall 3, side walls 4 and a crown 5. The front wall 2, the rear wall 3 and at least two side walls 4 are circumferentially arranged around the bottom 1. The crown 5 covers the tops of the front wall 2, the side walls 4 and the rear wall 3 and encloses a furnace chamber 10 of the glass furnace. The front wall 2 is provided with a charging port 21 communicating with the furnace chamber 10, the rear wall 3 is provided with a discharging port 31 communicating with the furnace chamber 10, and a first heating element 6 is installed on the side wall 4.

[0028] Specifically, the front wall 2 is installed at the front end of the bottom 1, the rear wall 3 is installed at the rear end of the bottom 1, one side wall 4 is installed on each of the left and right sides of the bottom 1, and the crown 5 is an arc-shaped wall, so that the glass furnace has an arched top. The glass raw material is put into the furnace chamber 10 through the charging port 21, and the glass liquid after melting of the glass raw material flows out from the discharging port 31. The first heating element 6 of this embodiment includes electrode bricks and burners. A plurality of electrode bricks and a plurality of burners are installed at intervals on each side wall 4 along the length direction of the bottom 1 (the front-rear direction in the figure) to realize two heating modes of electric heating and oxy-fuel combustion heating of the furnace chamber 10. The glass raw material in the furnace chamber 10 is melted under the high temperature action of the two heating modes to form a transparent, pure and uniform glass liquid. The glass liquid finally flows out of the furnace chamber 10 from the discharging port 31 of the rear wall 3 and enters the next process. Since the above-mentioned electrode bricks and burners are all prior arts, the specific structures and heating principles of the electrode bricks and burners will not be described in detail.

[0029] As Figure 2 shown, a discharging port 12 is opened in the area of the bottom 1 close to the rear wall 3. Before using the glass furnace, the inside of the furnace chamber 10 needs to be cleaned. The cleaned glass liquid is discharged from the discharging port 12 to ensure the cleanliness inside the glass furnace and avoid contaminating the glass liquid. The length of the furnace chamber 10 in the front-rear direction of this embodiment is about 8m - 10m, and the width of the furnace chamber 10 in the left-right direction is about 2m - 4m. In other embodiments, the length and width of the furnace chamber 10 can also be set to other values.

[0030] For the sake of convenience in description, in this embodiment, the furnace cavity 10 is divided into a charging area at the front end, a high-temperature area 11 in the middle, and a clarification area at the rear end. The front-end area of the furnace cavity 10 is the charging area (or pre-melting area). After passing through the feeding port 21, the glass raw materials are piled up in the charging area and are preliminarily heated and melted. As the glass raw materials are preliminarily melted, they flow towards the middle area of the furnace cavity 10. The middle area of the furnace cavity 10 is the high-temperature area 11 (the temperature in the middle position is relatively high). The glass raw materials, undercooked materials, and glass liquid are further heated in the high-temperature area 11 to be transformed into a molten state. Then, the molten glass liquid flows towards the clarification area at the rear end of the furnace cavity 10. The glass liquid is further heated in the clarification area, and at the same time, the clarification process is completed to ensure the transparency, purity, and uniformity of the glass liquid. The division lengths of the above-mentioned charging area, high-temperature area 11, and clarification area in the front-rear direction can be adaptively adjusted according to the specific length of the furnace cavity 10, and no specific limitation is made here.

[0031] The problem existing in the existing glass kiln is that with the improvement of production efficiency and feeding amount, some of the glass raw materials in the furnace cavity 10 flow out from the discharge port 31 before being thoroughly heated, and there often occurs a situation where the glass raw materials, undercooked materials, and molten glass liquid are mixed together and flow out from the discharge port 31, resulting in unsatisfactory melting effect and clarification effect, and further affecting the yield rate of the glass liquid.

[0032] To solve the above problems, as Figure 1 and Figure 2 shown, a second heating element 7 is installed in the high-temperature area 11 in the middle of the bottom of the tank 1. By installing the second heating element 7 in the high-temperature area 11 in the middle of the bottom of the tank 1, while the first heating element 6 is heating, the second heating element 7 further heats the glass raw materials entering the high-temperature area 11, increasing the heating temperature of the high-temperature area 11, improving the melting effect of the glass raw materials, avoiding the situation where the glass raw materials, undercooked materials, and molten glass liquid are mixed together and flow out from the discharge port 31, improving the melting effect and clarification effect of the glass raw materials in the glass kiln, and thus increasing the yield rate of the glass liquid.

[0033] In this embodiment, the second heating element 7 is an electrode brick, and the electrode brick is laid on the inner surface of the high-temperature area 11, realizing the rapid installation and stable heating of the second heating element 7. In other embodiments, the second heating element 7 can also be other heating components, such as electric heating rods, heating resistance wires, etc.

[0034] As Figure 1 and Figure 2 shown, the second heating element 7 protrudes from the inner surface of the high-temperature area 11, without the need to process or adjust the bottom of the tank 1, enabling the second heating element 7 to be quickly installed on the bottom of the tank 1 and improving the disassembly and assembly efficiency of the second heating element 7.

[0035] Furthermore, the height of the top surface of the second heating element 7 is 30 mm greater than the height of the inner surface of the high-temperature zone 11. When the second heating element 7 heats and raises the temperature of the raw glass material, it can also have a certain blocking effect on the molten glass liquid, so as to slow down the flow rate of the glass liquid in the high-temperature zone 11, thereby increasing the residence time of the glass liquid flowing through the high-temperature zone 11 and enhancing the melting effect of the glass liquid. Moreover, it weakens the erosion of the side walls 4 on both the left and right sides of the high-temperature zone 11 and the electrode bricks on the side walls 4, not only improving the service life of the glass furnace, but also preventing impurities peeled off from the eroded side walls 4 from being doped into the glass liquid, and improving the yield rate of the glass liquid.

[0036] As Figure 1 shown, the height h of the second heating element 7 is about 30 mm. When the height h of the second heating element 7 is greater than 30 mm, the effect of slowing down the flow rate of the glass liquid in the high-temperature zone 11 is obvious, which is not conducive to improving production efficiency; when the height h of the second heating element 7 is less than 30 mm, the effect of slowing down the flow rate of the glass liquid in the high-temperature zone 11 is weak, and it cannot effectively protect the two side walls 4 and the electrode bricks on the side walls 4.

[0037] As Figure 1 and Figure 2 shown, a buffer wall 8 is arranged on the side wall 4 extending towards the inside of the furnace chamber 10, and the bottom of the buffer wall 8 is connected to the bottom of the pool 1. The buffer wall 8 can have a good blocking effect on the molten glass liquid, slow down the flow rate of the glass liquid in the high-temperature zone 11, and further enhance the melting effect of the glass liquid. Moreover, it further weakens the erosion of the side walls 4 on both the left and right sides of the high-temperature zone 11 and the electrode bricks on the side walls 4, and prevents impurities peeled off from the eroded side walls 4 from being doped into the glass liquid, further improving the yield rate of the glass liquid.

[0038] It should be noted that at least one buffer wall 8 is located at one end of the high-temperature zone 11 close to the front wall 2. Through the above setting, the buffer wall 8 can play a blocking and buffering role before the glass liquid enters the high-temperature zone 11, so as to ensure the protection effect on the side walls 4 on both the left and right sides of the high-temperature zone 11 and the electrode bricks on the side walls 4, and further reduce the situation of impurities peeled off from the eroded side walls 4 being doped into the glass liquid, which is beneficial to improving the yield rate of the glass liquid.

[0039] Specifically, two buffer walls 8 are arranged on the side wall 4 extending towards the inside of the furnace chamber 10. One buffer wall 8 is located at one end of the high-temperature zone 11 close to the front wall 2, and the other buffer wall 8 is located at one end of the high-temperature zone 11 close to the rear wall 3. By arranging buffer walls 8 at both the front and rear ends of the high-temperature zone 11, the glass liquid has a buffer and deceleration effect at both the front and rear ends of the high-temperature zone 11, not only further enhancing the melting effect of the glass liquid, but also further weakening the erosion degree of the side walls 4 on both the left and right sides of the high-temperature zone 11 and the electrode bricks on the side walls 4, and improving the yield rate of the glass liquid.

[0040] In this embodiment, the length of the buffer wall 8 extending into the furnace cavity 10 is 25 mm to 35 mm. As Figure 2 shown, the length L of the buffer wall 8 extending into the furnace cavity 10 can be 25 mm, 27 mm, 29 mm, 31 mm, 33 mm, 35 mm, etc. Preferably, the length L of the buffer wall 8 extending into the furnace cavity 10 is 30 mm. When the length L is greater than 35 mm, the effect of slowing down the flow rate of the molten glass in the high-temperature zone 11 is more obvious, which is not conducive to improving production efficiency; when the length L is less than 25 mm, the effect of slowing down the flow rate of the molten glass in the high-temperature zone 11 is weak, and the two side walls 4 and the electrode bricks on the side walls 4 cannot be effectively protected.

[0041] As Figure 1 and Figure 2 shown, the bottom of the tank 1 is provided with a weir 9, and both sides of the weir 9 in the width direction are respectively connected to the two side walls 4 arranged oppositely in the width direction of the bottom of the tank 1. Specifically, the weir 9 is arranged in the clarification area, which can effectively block the impurities eroded and fallen off from the buffer wall 8 in the high-temperature zone 11, prevent the impurities from flowing out of the discharge port 31 along with the molten glass, and improve the yield rate of the molten glass. In addition, the weir 9, a part of the side walls 4 on the left and right sides, and the rear wall 3 together enclose a clarification chamber to improve the clarification effect of the molten glass in the clarification area and further improve the quality of the molten glass.

[0042] Specifically, the height of the weir 9 is 7 m to 9 m. The height H of the weir 9 can be 7 m, 8 m, 9 m, etc., to enhance the effect of filtering impurities by the weir 9. When the height H of the weir 9 is less than 7 m, the effect of filtering impurities is weakened, which is likely to reduce the yield rate of the molten glass; when the height H of the weir 9 is greater than 9 m, the weir 9 is too high, increasing the deceleration effect of the molten glass and affecting the smooth flow of the molten glass out of the discharge port 31, reducing the production rate of the molten glass.

[0043] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. Glass furnace, comprising a bottom (1), a front wall (2), a rear wall (3), side walls (4) and a crown (5), wherein the front wall (2), the rear wall (3) and at least two of the side walls (4) are circumferentially arranged around the bottom (1), and the crown (5) covers the tops of the front wall (2), the side walls (4) and the rear wall (3) and encloses a furnace cavity (10) of the glass furnace. A charging port (21) communicating with the furnace cavity (10) is provided on the front wall (2), and a discharging port (31) communicating with the furnace cavity (10) is provided on the rear wall (3). A first heating element (6) is installed on the side wall (4), and it is characterized in that, A second heating element (7) is installed in the high-temperature area (11) in the middle of the pool bottom (1).

2. The glass melting furnace according to claim 1, characterized in that, The second heating element (7) protrudes from the inner surface of the high-temperature area (11).

3. The glass furnace according to claim 2, characterized in that, The height of the top surface of the second heating element (7) is 30 mm greater than the height of the inner surface of the high-temperature area (11).

4. The glass furnace according to claim 2, characterized in that, The second heating element (7) is an electrode brick, and the electrode brick is laid on the inner surface of the high-temperature area (11).

5. The glass melting furnace according to claim 1, characterized in that, A buffer wall (8) extends towards the inside of the furnace cavity (10) on the side wall (4), and the bottom of the buffer wall (8) is connected to the pool bottom (1).

6. The glass furnace according to claim 5, characterized in that, At least one of the buffer walls (8) is located at one end of the high-temperature area (11) close to the front wall (2).

7. The glass furnace according to claim 5, wherein, Two buffer walls (8) extend towards the inside of the furnace cavity (10) on the side wall (4). One buffer wall (8) is located at one end of the high-temperature area (11) close to the front wall (2), and the other buffer wall (8) is located at one end of the high-temperature area (11) close to the rear wall (3).

8. The glass furnace according to claim 5, characterized in that, The length of the buffer wall (8) extending into the furnace cavity (10) is 25 mm to 35 mm.

9. The glass furnace according to any one of claims 1 to 8, characterized in that, The pool bottom (1) is provided with a dam (9), and both sides of the dam (9) in the width direction are respectively connected to the two side walls (4) arranged oppositely in the width direction of the pool bottom (1).

10. The glass furnace according to claim 9, characterized in that, The height of the dam (9) is 7 m to 9 m.

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