Float glass kiln tank bottom cooling system

Abstract

The invention provides a pool bottom cooling system of a float glass kiln, and relates to the technical field of cooling of cooling parts of glass kilns. A float glass kiln pool bottom cooling system comprises a movable air cooling assembly sliding at the bottom of an inlet of a kiln cooling part, a fixed air cooling assembly fixed to the tail end of the kiln cooling part and a fan conveying cold air to the movable air cooling assembly and the fixed air cooling assembly, and the output end of the fan is fixedly communicated with an air supply pipe. And one end of the air supply pipe fixedly communicates with a shunting air pipe. A fan is started to divide an air path into two paths under the action of a flow dividing air pipe, one path reaches a pool bottom movable air cooling assembly at an inlet of the cooling part, the temperature of molten glass entering the cooling part can be properly reduced, the molten glass entering the cooling part has a slow cooling process, and the movable air cooling assembly is of a sliding structure, so that the temperature of the molten glass entering the cooling part is reduced. The device can move back and forth to adjust the position according to temperature and defect conditions, so that the situation that bubbles in molten glass are difficult to absorb by the molten glass and exist in a finished product to influence the glass quality due to quenching is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cooling of a glass furnace cooling part, in particular to a float glass furnace pool bottom cooling system. Background Art

[0002] Glass kiln is a melting device that is essential for the glass manufacturing industry. Glass melting furnace is generally divided into melting section, clarification section and cooling section. The function of the cooling section is to make the molten glass reach the temperature required for molding. Since the melting temperature of high-temperature refractory glass is very high, the hot spot temperature reaches over 1600°C. The temperature of the glass liquid after passing through the neck to the cooling section is also over 1300°C, while the molding temperature of the tin bath is around 1100°C. Therefore, it is necessary to reduce the high temperature of the glass liquid in the cooling section to the appropriate temperature required for tin bath molding.

[0003] Generally, ordinary float glass production lines increase the size of the neck water bag and the dilution air volume in the cooling section to reduce the glass liquid to the forming temperature of the tin bath. During the cooling process of the glass liquid, there will always be some temperature difference between the glass liquid at different positions, which will cause uneven cooling of the glass liquid and form glass ribs in the glass, greatly reducing the quality of the glass. It will also increase the number of defects in the glass liquid, especially affecting the generation of bubbles. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a float glass furnace bottom cooling system, which solves the problem that the temperature difference in the cooling part causes uneven cooling of the molten glass, reduces the quality of the glass, and also causes an increase in the number of defects in the molten glass, especially affecting the generation of bubbles.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a float glass kiln pool bottom cooling system, comprising a dynamic air cooling assembly sliding at the bottom of the kiln cooling part entrance, a fixed air cooling assembly fixed at the tail end of the kiln cooling part, and a fan for conveying cold air to the dynamic air cooling assembly and the fixed air cooling assembly, the output end of the fan is fixedly connected with an air supply pipe, one end of the air supply pipe is fixedly connected with a diversion air duct, the diversion air duct diverts the cold air to the inside of the dynamic air cooling assembly and the fixed air cooling assembly, the dynamic air cooling assembly and the fixed air cooling assembly are both composed of a bellows and a plurality of air outlet pipes, and the plurality of air outlet pipes are fixedly connected to the top of the bellows.

[0008] Preferably, the bottom of the wind box of the dynamic air cooling component is fixedly connected with a first connecting pipe, one end of the first connecting pipe is fixedly connected with a bellows, one end of the bellows is connected to one end of the shunt air duct through the second connecting pipe, and the dynamic air cooling component is connected to one end of the shunt air duct under the action of the first connecting pipe, the bellows and the second connecting pipe, and the bellows is arranged so that the dynamic air cooling component is not affected in delivering cold air to the dynamic air cooling component after sliding adjustment.

[0009] Preferably, a third connecting pipe is fixedly connected to the bottom of the wind box of the fixed air cooling component, and the other end of the third connecting pipe is connected to the other end of the diversion air duct. The fixed air cooling component is connected to one end of the diversion air duct through the third connecting pipe.

[0010] Preferably, both ends of the air outlet of the split air duct are fixedly connected with air valves, and the air valves can adjust the air volume.

[0011] Preferably, two groups of connecting frames are fixedly connected to the bottom of the entrance of the cooling part of the kiln, and fixed sliding rods are fixedly connected between each group of connecting frames. Connecting sliders are fixedly connected to the two side surfaces of the dynamic air cooling component, and the two connecting sliders are respectively slidably connected to the two fixed sliding rods. The dynamic air cooling component is slidably installed at the bottom of the entrance of the cooling part of the kiln through the action of the arranged connecting frames, fixed sliding rods and connecting sliders.

[0012] Preferably, two sets of fixing frames are fixedly connected to the bottom of the tail end of the kiln cooling part, and the fixed air cooling component is fixedly connected between the two sets of fixing frames, and the fixed air cooling component is fixed to the bottom of the tail end of the kiln cooling part under the action of the fixing frames.

[0013] (III) Beneficial effects

[0014] The present invention provides a float glass furnace bottom cooling system, which has the following beneficial effects:

[0015] 1. The bottom cooling system of the float glass furnace starts the fan to divide the air path into two paths under the action of the diversion air duct. One path is the dynamic air cooling component at the bottom of the cooling part entrance, which can appropriately reduce the temperature of the glass liquid entering the cooling part. The glass liquid entering the cooling part has a slow cooling process. The dynamic air cooling component here is a sliding structure, which can be moved back and forth to adjust its position according to the temperature and defect conditions, reducing the rapid cooling. The bubbles in the glass liquid are difficult to be absorbed by the glass liquid, and the bubbles exist in the finished product and affect the glass quality.

[0016] 2. The float glass furnace pool bottom cooling system starts the fan to divide the air path into two paths under the action of the diversion air duct. The other path goes to the fixed air cooling component at the bottom of the pool at the tail end of the cooling section to better adjust the temperature of the glass liquid entering the tin bath and reduce the impact of bubbles. The fixed air cooling component here is fixed. By evenly cooling the glass liquid entering the cooling section, the glass liquid has the viscosity required for molding and does not damage the quality of the glass liquid during the cooling stage.

[0017] 3. The float glass furnace bottom cooling system adjusts the amount of cold air at the bottom of the furnace cooling part through the air valve to reduce the temperature of the glass liquid at the bottom of the cooling part, and then adjusts the temperature difference of the glass liquid in the cooling part, so that the glass liquid is cooled evenly, which is conducive to the absorption of residual bubbles in the cooling process, thereby obtaining the appropriate glass forming temperature and high-quality glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation of the dynamic air cooling component, the fixed air cooling component and the fan assembly of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the air cooling component and the fixed air cooling component installed at the bottom of the kiln cooling part of the present invention.

[0020] Among them, 1. fan; 11. air supply pipe; 12. diversion air duct; 2. dynamic air cooling component; 21. first connecting pipe; 22. bellows; 23. second connecting pipe; 24. connecting slider; 3. fixed air cooling component; 31. third connecting pipe; 4. air valve; 5. connecting frame; 51. fixed slide rod; 6. fixed frame. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 and Figure 2As shown, the float glass kiln pool bottom cooling system includes a dynamic air cooling component 2 sliding at the bottom of the kiln cooling part entrance, a fixed air cooling component 3 fixed at the tail end of the kiln cooling part and a fan 1 for conveying cold air to the dynamic air cooling component 2 and the fixed air cooling component 3. The output end of the fan 1 is fixedly connected with an air supply pipe 11, and one end of the air supply pipe 11 is fixedly connected with a diversion air duct 12. The diversion air duct 12 diverts the cold air to the inside of the dynamic air cooling component 2 and the fixed air cooling component 3. The fan 1 diverts the air volume through the fan 1 and the diversion air duct 12 to the inside of the dynamic air cooling component 2 and the fixed air cooling component 3 to cool the bottom of the kiln. Both ends of the air outlet of the diversion air duct 12 are fixedly connected with air valves 4. The air valve 4 is an electric air valve. The air volume can be adjusted by setting the air valve 4.

[0023] Please refer again Figure 1 and Figure 2 The dynamic air cooling component 2 and the fixed air cooling component 3 are both composed of a wind box and a plurality of air outlet pipes. The plurality of air outlet pipes are fixedly connected to the top of the wind box. According to the actual temperature and the actual environmental conditions on site, the cooling position and the expected temperature drop are determined, and the air volume required by the fan is calculated, and then the number of air outlet pipes on the top of the wind box is determined.

[0024] Please refer again Figure 1 and Figure 2 A first connecting pipe 21 is fixedly connected to the bottom of the wind box of the dynamic air-cooling component 2, and one end of the first connecting pipe 21 is fixedly connected to a bellows 22, and one end of the bellows 22 is connected to one end of the shunt air duct 12 through a second connecting pipe 23. Under the action of the first connecting pipe 21, the bellows 22 and the second connecting pipe 23, one end of the shunt air duct 12 is used to supply air to the dynamic air-cooling component 2, and under the action of the bellows 22, the dynamic air-cooling component 2 remains connected after sliding adjustment, and a third connecting pipe 31 is fixedly connected to the bottom of the wind box of the fixed air-cooling component 3, and the other end of the third connecting pipe 31 is connected to the other end of the shunt air duct 12, and under the action of the third connecting pipe 31, an air path separated by the shunt air duct 12 is used to supply air to the fixed air-cooling component 3.

[0025] Please refer again Figure 2 Two groups of connecting frames 5 are fixedly connected to the bottom of the entrance of the kiln cooling part, and fixed slide bars 51 are fixedly connected between each group of connecting frames 5. Connecting slide bars 24 are fixedly connected to the two side surfaces of the dynamic air cooling component 2. The two connecting slide bars 24 are respectively slidably connected to the two fixed slide bars 51. The dynamic air cooling component 2 is adjusted by controlling the sliding between the two groups of fixed slide bars 51. Its position can be adjusted by moving forward and backward according to the temperature and defect conditions.

[0026] Please refer again Figure 2Two sets of fixing frames 6 are fixedly connected to the bottom of the tail end of the kiln cooling part, and the fixed air cooling component 3 is fixedly connected between the two sets of fixing frames 6. Under the action of the two sets of fixing frames 6, the fixed air cooling component 3 is fixed to the bottom of the tail end of the kiln cooling part.

[0027] Working principle: The outlet of the fan 1 is connected with the air supply pipe 11, and the air path is divided into two paths under the action of the diversion air pipe 12. One path goes to the dynamic air cooling component 2 at the bottom of the pool at the entrance of the cooling part, where the wind box is a slidable structure. The other path goes to the fixed air cooling component 3 at the bottom of the pool at the entrance of the cooling part outlet flow channel. The upper part of the two wind boxes are each provided with a plurality of air outlet pipes to blow air to cool the bottom of the kiln pool.

[0028] The bellows at the entrance of the cooling section is slidable and can be moved back and forth to adjust its position according to the temperature and defect conditions. By cooling the bottom of the pool at the entrance of the cooling section, the temperature of the molten glass entering the cooling section can be appropriately reduced. The molten glass entering the cooling section has a slow cooling process, which weakens the effect of rapid cooling and makes it difficult for bubbles in the molten glass to be absorbed by the molten glass, and their presence in the finished product affects the quality of the glass.

[0029] The bellows at the bottom of the pool at the entrance of the flow channel at the tail end of the cooling section is fixed, which can better adjust the temperature of the molten glass entering the tin bath and reduce the impact of bubbles. By evenly cooling the molten glass entering the cooling section, the molten glass has the viscosity required for molding and the quality of the molten glass is not damaged during the cooling stage.

[0030] The first time the pool bottom cooling air was turned on at 10HZ, the pool bottom temperature did not drop significantly, and the number of large bubbles did not decrease significantly. The frequency of fan 1 was adjusted to 17HZ again, the pool bottom temperature dropped, and the number of large bubbles showed a downward trend. Finally, the frequency of fan 1 was adjusted to 20HZ, and the pool bottom temperature at the inlet of the cooling section dropped from 1052℃ to 1046℃; the pool bottom temperature at the inlet of the cooling section outlet flow channel dropped from 928℃ to 916℃, and the number of large bubbles decreased significantly, among which the number of bubbles of types 9 and 10 dropped to about 5 / hour, and that of type 7 was below 10 / hour. The yield rate, first-class rate and output have been greatly improved.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A float glass furnace bottom cooling system, comprising a dynamic air cooling assembly (2) sliding at the bottom of the furnace cooling section entrance, a fixed air cooling assembly (3) fixed at the rear end of the furnace cooling section, and a fan (1) for conveying cold air to the dynamic air cooling assembly (2) and the fixed air cooling assembly (3), characterized in that: The output end of the fan (1) is fixedly connected to an air supply pipe (11), one end of the air supply pipe (11) is fixedly connected to a bypass air pipe (12), the bypass air pipe (12) bypasses and transports cold air to the interior of the dynamic air cooling component (2) and the fixed air cooling component (3), the dynamic air cooling component (2) and the fixed air cooling component (3) are both composed of a bellows and a plurality of air outlet pipes, and the plurality of air outlet pipes are fixedly connected to the top of the bellows.

2. The float glass furnace bottom cooling system according to claim 1, characterized in that: The bottom of the wind box of the dynamic air cooling component (2) is fixedly connected to a first connecting pipe (21), one end of the first connecting pipe (21) is fixedly connected to a bellows (22), and one end of the bellows (22) is connected to one end of the diversion air duct (12) via a second connecting pipe (23).

3. The float glass furnace bottom cooling system according to claim 1, characterized in that: A third connecting pipe (31) is fixedly connected to the bottom of the wind box of the fixed air cooling component (3), and the other end of the third connecting pipe (31) is connected to the other end of the diversion air duct (12).

4. The float glass furnace bottom cooling system according to claim 1, characterized in that: Both ends of the air outlet of the split air duct (12) are fixedly connected with air valves (4).

5. The float glass furnace bottom cooling system according to claim 1, characterized in that: Two groups of connecting frames (5) are fixedly connected to the bottom of the entrance of the kiln cooling part, and fixed sliding rods (51) are fixedly connected between each group of connecting frames (5). Both side surfaces of the dynamic air cooling component (2) are fixedly connected to connecting sliding blocks (24), and the two connecting sliding blocks (24) are respectively slidably connected to the two fixed sliding bars (51).

6. The float glass furnace bottom cooling system according to claim 1, characterized in that: Two sets of fixing frames (6) are fixedly connected to the bottom of the tail end of the kiln cooling part, and the fixed air cooling component (3) is fixedly connected between the two sets of fixing frames (6).

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