CN211199014U - Glass annealing kiln convulsions circulation system - Google Patents
Glass annealing kiln convulsions circulation system Download PDFInfo
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- CN211199014U CN211199014U CN201922405246.8U CN201922405246U CN211199014U CN 211199014 U CN211199014 U CN 211199014U CN 201922405246 U CN201922405246 U CN 201922405246U CN 211199014 U CN211199014 U CN 211199014U
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Abstract
The utility model discloses a glass annealing kiln ventilation circulating system, which comprises an annealing kiln metal shell, wherein electric heaters are arranged on two sides of the upper part of the annealing kiln metal shell, a centrifugal fan is arranged at the top of the annealing kiln metal shell close to the middle position, roller transmission devices are respectively arranged on two sides of the annealing kiln metal shell, a bearing seat is arranged on each roller transmission device, a roller is arranged on each bearing seat, and the upper end of each roller is used for placing a glass belt; both sides of the top of the annealing kiln metal shell are provided with an upper plate exhaust pipe, the pipe orifice of the upper plate exhaust pipe is communicated with the upper position of the inner plate of the annealing kiln metal shell, and meanwhile, the bottom of the side end of the annealing kiln metal shell is provided with a lower plate exhaust pipe; the plate upper exhaust pipe and the plate lower exhaust pipe are converged on the exhaust main pipe and are connected with an air inlet of the centrifugal fan through a flange; and the lower exhaust pipe is arranged by the upper exhaust pipe, so that the gas extracted from the inside of the annealing kiln metal shell is exhausted out of the room.
Description
Technical Field
The utility model relates to a glass processing technology field especially relates to a glass annealing kiln convulsions circulation system.
Background
The glass annealing kiln is used as one of three thermal equipment for float glass production, and plays a decisive role in the glass forming process. The glass strip that comes out from the molten tin bath gets into the annealing kiln through excessive roller stand and cools down with reasonable temperature curve, and the annealing kiln is the permanent stress of elimination glass on the one hand, and on the other hand carries the glass sheet to the cold junction. The temperature of the glass leaving the tin bath after the tin bath is formed is between about 580 ℃ and 620 ℃, the temperature of the glass plate received by the cold section is between about 70 ℃ and 80 ℃, in this temperature range, the glass undergoes a change from plastic to elastomer, and the transition temperature is between about 470 ℃ and 480 ℃ (i.e. at the rear end of the annealing furnace B zone). Large-scale float glass production and processing enterprises all use continuous type annealing kiln, and annealing temperature is controlled through electric heater and tube bundle formula radiant cooler to annealing kiln, and when the temperature is less than 470 ℃ (annealing kiln C district), under the prerequisite that satisfies glass temporary stress, can suitably promote cooling speed, especially below 200 ℃, the cooling glass board of accessible forced cold wind furthest. At present, the common continuous annealing kiln ventilation system without the kiln has the following problems in the production and processing process of special electronic glass such as high alumina and the like:
firstly, the requirement on the temperature curve of the front area (A, B, C area) of the annealing kiln is high, the convection circulation of gas in the space is carried out by the front and back temperature gradients, and because of production reasons, when the temperature changes rapidly, the rapid adjustment of the temperature in the kiln is difficult to carry out through electric heating and a tube bundle type radiation cooler, the stability of the operation condition of the annealing kiln is influenced, and the glass forming and annealing quality is influenced to a certain extent.
Secondly, the annealing kiln is in a thermal working condition environment, dust and particles inevitably enter the annealing kiln from a glass strip inlet and other gaps, and particularly, dust particles of masonry refractory materials and sealing refractory materials are accumulated in the annealing kiln, so that the quality of the surface of a glass plate is seriously influenced. For example, dust particles adhere to the annealing kiln roller due to the action of static electricity and the like, and the lower surface of the glass strip can generate defects such as scratches, indentations and the like when the defects are serious.
Third, dust and the like accumulated on the annealing kiln roller need to be cleaned in time, a lower edge seal needs to be opened, the cleaning time is long, the annealing temperature of the glass belt in the annealing kiln is influenced, plate breakage is easy to occur, and the yield of the glass plate is influenced. Meanwhile, when the roller is cleaned by opening the edge seal for a long time frequently, strong convection is generated between external cold air and high-temperature air in the kiln due to density difference, the cold air enters the kiln, the temperature of the part, which is not in contact with glass, of the roller in the kiln is suddenly reduced, and the roller is suddenly shrunk to cause bending deformation. Damage to the annealing equipment, such as severe distortion, can cause glass sheet breakage and affect glass production continuity.
Therefore, in the production and processing of special electronic glass such as high-alumina, a novel annealing kiln exhaust system is urgently needed to overcome the defects.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a glass annealing kiln convulsions circulation system comes board exhaust column down through being provided with the board exhaust column on, will take out the gas outgoing outdoor in the annealing kiln metal casing.
In order to realize the technical scheme, the utility model provides a glass annealing kiln ventilation circulation system, which comprises an annealing kiln metal shell, wherein electric heaters are arranged on two sides of the upper part of the annealing kiln metal shell, a centrifugal fan is arranged at the top of the annealing kiln metal shell close to the middle position, roller transmission devices are respectively arranged on two sides of the annealing kiln metal shell, a bearing seat is arranged on each roller transmission device, a roller is arranged on each bearing seat, and the upper end of each roller is used for placing a glass belt; both sides of the top of the annealing kiln metal shell are provided with an on-plate exhaust pipe, the pipe orifice of the on-plate exhaust pipe is communicated with the upper position of the internal plate of the annealing kiln metal shell, meanwhile, the bottom of the side end of the annealing kiln metal shell is provided with an off-plate exhaust pipe, and the pipe orifice of the off-plate exhaust pipe is communicated with the lower position of the internal plate of the annealing kiln metal shell; and the plate upper exhaust pipe and the plate lower exhaust pipe are converged on the main exhaust pipe and connected with the air inlet of the centrifugal fan through a flange.
The further improvement lies in that: the centrifugal fan is fixedly installed on the annealing kiln metal shell through an elastic shock absorption seat, and the elastic shock absorption seat is connected to the annealing kiln metal shell through a bolt.
The further improvement lies in that: the air outlet of the centrifugal fan is connected with an indoor air outlet pipe through a flange, and the other end of the indoor air outlet pipe is welded on the outdoor air outlet pipe.
The further improvement lies in that: the ribbon moves rearward under the frictional force of the rollers.
The further improvement lies in that: the electric heaters are at least provided with two groups and are arranged on the side end of the upper part of the annealing kiln metal shell.
The further improvement lies in that: electric butterfly valves are arranged on the plate upper exhaust pipe and the plate lower exhaust pipe.
The further improvement lies in that: a zone A, a zone B and a zone C are arranged in the annealing kiln metal shell, and the air draft circulating system is installed in the zone C of the annealing kiln metal shell.
The utility model has the advantages that:
1. within the range of reasonable temporary stress and temperature gradient, the frequency of the variable-frequency centrifugal fan can be adjusted, and the temperature regulation speed of the C area of the annealing kiln can be properly accelerated; and the upper plate exhaust pipe and the lower plate exhaust pipe are respectively provided with an electric butterfly valve, the air distribution of the upper plate and the lower plate is adjustable, the air quantity of the upper plate and the lower plate can be adjusted, the temperature difference of the upper plate and the lower plate can be adjusted, and a certain positive effect is realized on the control of the warpage of the plate.
2. Because the centrifugal fan is used for forcibly discharging the gas in the kiln, a negative pressure area is formed in the annealing kiln C area, pressure difference is generated along the movement direction of the glass belt, impurities such as dust, particles and the like entering the annealing kiln are discharged out of the annealing kiln through the centrifugal fan air draft system along with hot air, the quantity of the dust and the particles adhered to the roller is reduced, and the quantity of defects such as scratches, marks and the like on the surface of the glass is greatly reduced; meanwhile, because pressure difference is generated in the kiln, gas in the kiln can run directionally, heat dissipation to the surrounding environment of the annealing kiln is reduced, and the working environment is improved.
3. Because most dust and particulate matters are discharged outside the annealing kiln by the annealing kiln exhaust system, the cleaning times of dust and other attachments adhered to the roller are reduced, the phenomenon that the roller is cleaned for a long time for multiple times to cause cold air entering to influence the annealing temperature and the annealing quality of the glass belt is avoided, the problems of deformation and the like of the roller caused by rapid cooling are relieved, and the continuity of glass production and processing is kept.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a left side view of the present invention.
Wherein: 1. annealing kiln metal shell; 2. an electric heater; 3. a centrifugal fan; 4. a roller transmission; 5. a bearing seat; 6. a roller; 7. a glass ribbon; 8. an air exhaust pipe is arranged on the plate; 9. an air exhaust pipe below the plate; 10. a main exhaust pipe; 11. an elastic shock-absorbing seat; 12. an indoor air outlet pipe; 13. an outdoor air outlet pipe; 14. an electric butterfly valve.
Detailed Description
In order to deepen the understanding of the present invention, the following embodiments will be combined to make the present invention do further details, and the present embodiment is only used for explaining the present invention, and does not constitute the limitation of the protection scope of the present invention.
According to the drawings of fig. 1 and 2, the embodiment provides an air-draft circulation system of a glass annealing kiln, which comprises an annealing kiln metal shell 1, wherein electric heaters 2 are respectively installed on two sides of the upper part of the annealing kiln metal shell 1, a centrifugal fan 3 is arranged at the top of the annealing kiln metal shell 1 close to the middle, roller transmission devices 4 are respectively arranged on two sides of the annealing kiln metal shell 1, bearing seats 5 are arranged on the roller transmission devices 4, rollers 6 are installed on a left bearing seat and a right bearing seat, and the upper ends of the rollers 6 are used for placing glass belts 7; both sides of the top of the annealing kiln metal shell 1 are provided with an on-board exhaust pipe 8, the pipe orifice of the on-board exhaust pipe 8 is communicated with the on-board position inside the annealing kiln metal shell 1, meanwhile, the bottom of the side end of the annealing kiln metal shell 1 is provided with an off-board exhaust pipe 9, and the pipe orifice of the off-board exhaust pipe 9 is communicated with the off-board position inside the annealing kiln metal shell 1; the plate upper exhaust pipe 8 and the plate lower exhaust pipe 9 are converged on the main exhaust pipe 10 and connected with the air inlet of the centrifugal fan 3 through a flange.
Within the range of reasonable temporary stress and temperature gradient, the frequency of the variable-frequency centrifugal fan can be adjusted, and the temperature regulation speed of the C area of the annealing kiln can be properly accelerated; and the upper plate exhaust pipe and the lower plate exhaust pipe are respectively provided with an electric butterfly valve, the air distribution of the upper plate and the lower plate is adjustable, the air quantity of the upper plate and the lower plate can be adjusted, the temperature difference of the upper plate and the lower plate can be adjusted, and a certain positive effect is realized on the control of the warpage of the plate.
Because the centrifugal fan is used for forcibly discharging the gas in the kiln, a negative pressure area is formed in the annealing kiln C area, pressure difference is generated along the movement direction of the glass belt, impurities such as dust, particles and the like entering the annealing kiln are discharged out of the annealing kiln through the centrifugal fan air draft system along with hot air, the quantity of the dust and the particles adhered to the roller is reduced, and the quantity of defects such as scratches, marks and the like on the surface of the glass is greatly reduced; meanwhile, because pressure difference is generated in the kiln, gas in the kiln can run directionally, heat dissipation to the surrounding environment of the annealing kiln is reduced, and the working environment is improved.
Because most dust and particulate matters are discharged outside the annealing kiln by the annealing kiln exhaust system, the cleaning times of dust and other attachments adhered to the roller are reduced, the phenomenon that the roller is cleaned for a long time for multiple times to cause cold air entering to influence the annealing temperature and the annealing quality of the glass belt is avoided, the problems of deformation and the like of the roller caused by rapid cooling are relieved, and the continuity of glass production and processing is kept.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a glass annealing kiln convulsions circulation system, is including annealing kiln metal casing (1), its characterized in that: electric heaters (2) are mounted on two sides of the upper portion of the annealing kiln metal shell (1), a centrifugal fan (3) is arranged at the position, close to the middle, of the top of the annealing kiln metal shell (1), roller transmission devices (4) are arranged on two sides of the annealing kiln metal shell (1) respectively, bearing seats (5) are arranged on the roller transmission devices (4), rollers (6) are mounted on the left bearing seat and the right bearing seat, and the upper ends of the rollers (6) are used for placing glass belts (7); both sides of the top of the annealing kiln metal shell (1) are provided with an upper plate exhaust pipe (8), the pipe orifice of the upper plate exhaust pipe (8) is communicated with the upper position of the inner plate of the annealing kiln metal shell (1), meanwhile, the bottom of the side end of the annealing kiln metal shell (1) is provided with a lower plate exhaust pipe (9), and the pipe orifice of the lower plate exhaust pipe (9) is communicated with the lower position of the inner plate of the annealing kiln metal shell (1); and the plate upper exhaust pipe (8) and the plate lower exhaust pipe (9) are converged on the exhaust main pipe (10) and connected with the air inlet of the centrifugal fan (3) through a flange.
2. The glass annealing kiln ventilation circulating system of claim 1, wherein: the centrifugal fan (3) is installed on the annealing kiln metal shell (1) through an elastic shock absorption seat (11), and the elastic shock absorption seat (11) is connected to the annealing kiln metal shell (1) through a bolt.
3. The glass annealing kiln ventilation circulating system of claim 1, wherein: the air outlet of the centrifugal fan (3) is connected with an indoor air outlet pipe (12) through a flange, and the other end of the indoor air outlet pipe (12) is welded on the outdoor air outlet pipe (13).
4. The glass annealing kiln ventilation circulating system of claim 1, wherein: the glass ribbon (7) is moved backwards under the friction of the rollers.
5. The glass annealing kiln ventilation circulating system of claim 1, wherein: the electric heaters (2) are at least provided with two groups and are arranged on the side end of the upper part of the annealing kiln metal shell (1).
6. The glass annealing kiln ventilation circulating system of claim 1, wherein: electric butterfly valves (14) are arranged on the plate upper air exhaust pipe (8) and the plate lower air exhaust pipe (9).
7. The glass annealing kiln ventilation circulating system of claim 1, wherein: a zone A, a zone B and a zone C are arranged in the annealing kiln metal shell (1), and the air draft circulating system is arranged in the zone C of the annealing kiln metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922405246.8U CN211199014U (en) | 2019-12-27 | 2019-12-27 | Glass annealing kiln convulsions circulation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922405246.8U CN211199014U (en) | 2019-12-27 | 2019-12-27 | Glass annealing kiln convulsions circulation system |
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| CN211199014U true CN211199014U (en) | 2020-08-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818237A (en) * | 2019-12-27 | 2020-02-21 | 中建材（蚌埠）光电材料有限公司 | Glass annealing kiln convulsions circulation system |
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- 2019-12-27 CN CN201922405246.8U patent/CN211199014U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818237A (en) * | 2019-12-27 | 2020-02-21 | 中建材（蚌埠）光电材料有限公司 | Glass annealing kiln convulsions circulation system |
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