CN111470761A - Float glass manufacturing device and float glass - Google Patents
Float glass manufacturing device and float glass Download PDFInfo
- Publication number
- CN111470761A CN111470761A CN202010244794.1A CN202010244794A CN111470761A CN 111470761 A CN111470761 A CN 111470761A CN 202010244794 A CN202010244794 A CN 202010244794A CN 111470761 A CN111470761 A CN 111470761A
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- Prior art keywords
- tin bath
- float glass
- gas
- glass manufacturing
- tin
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/20—Composition of the atmosphere above the float bath; Treating or purifying the atmosphere above the float bath
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a float glass manufacturing device, which sequentially comprises a melting furnace, a tin bath and a transition roller table which are hermetically connected with each other according to the flowing direction of molten glass, wherein a gas sealing device is arranged at an outlet of the transition roller table, protective gas is filled in the tin bath, the gas pressure generated by the gas sealing device is greater than the pressure of the protective gas filled in the tin bath, and a fluid director is also arranged on the tin bath. The invention can prevent the gas in the tin bath from entering the transition roller table and prevent the tin oxide from refluxing and polluting the tin liquid.
Description
Technical Field
The invention belongs to the technical field of float glass production, and particularly relates to a float glass manufacturing device and float glass.
Background
The float glass is produced by flowing molten glass melted in a melting furnace into a tin bath containing molten tin, floating the molten glass in a high temperature zone upstream of the tin bath to a low temperature zone downstream of the tin bath, forming a plate-like glass ribbon in the floating flow, lifting the glass ribbon at a downstream outlet end of the tin bath, passing the glass ribbon through a transition roller table, and then entering an annealing furnace for annealing and cooling.
In order to ensure the purity of the molten tin in the tin bath and prevent the oxidation of the molten tin in the tin bath, protective gas with weak reducibility is filled into the sealed tin bath to protect the molten tin, the outlet of the tin bath is controlled by the micro-positive pressure of the protective gas in the tin bath, the gas flowing out of the tin bath contains nitrogen, tin vapor and tin oxide particles, and the gas can be condensed in the shell of the transition roller table when cooled, so that the gas can pollute the roller table and the glass plate surface in the roller table and further influence the glass quality.
Patent application No. cn201911170682.x discloses a manufacturing device and a manufacturing method of float glass, wherein an upper gas sealing device and a lower gas sealing device are respectively arranged at an outlet of a tin bath, so that the sealing property of the outlet end of the tin bath is improved, gas in the tin bath is prevented from entering a transition roller table, and the pollution of the gas of the transition roller table to molten tin in the tin bath is prevented.
However, along with the gas increase at the tin bath outlet, its part can also aerify in the tin bath in order to guarantee that inside protective gas pressure is stable in the tin bath simultaneously in order to guarantee in its pressure difference backward to the tin bath, finally leads to tin bath internal gas pressure to surpass the atmospheric pressure at tin bath outlet, and the protective gas who carries the tin oxide particle in the tin bath still can follow tin bath outlet and escape and cause the pollution and advance to influence the glass quality.
Disclosure of Invention
The present invention addresses the problems of the prior art described above and provides a float glass manufacturing apparatus and a float glass.
The invention solves the technical problems through the following technical means:
the float glass manufacturing device comprises a melting furnace, a tin bath and a transition roller table which are hermetically connected with each other in sequence according to the flowing direction of molten glass, wherein a gas sealing device is arranged at an outlet of the transition roller table, protective gas is filled in the tin bath, the gas pressure generated by the gas sealing device is greater than the pressure of the protective gas filled in the tin bath, and a fluid director is further arranged on the tin bath.
Furthermore, a guide sleeve is arranged at the outlet of the tin bath, and the outer wall of the guide sleeve is hermetically connected with the outlet of the tin bath.
Further, the guide sleeve is made of high-temperature ceramic materials.
Furthermore, a driving roller is arranged inside the guide sleeve to support the glass belt.
Furthermore, the gas sealing device comprises an upper gas sealer and a lower gas sealer, and the upper gas sealer and the lower gas sealer are respectively positioned on the upper plate surface and the lower plate surface of the glass belt.
Further, the fluid director includes accelerating tube, separator tube and blast pipe that communicate in proper order, the below of separator tube is provided with the collecting hopper, the separator tube internal diameter is greater than accelerating tube, accelerating tube's length is less than the separator tube.
Furthermore, the bottom of the aggregate bin is provided with an opening and a cover plate which is sealed at the opening in a rotating manner.
Furthermore, an inner container barrel with an opening at the top is arranged in the material collecting hopper, and sawteeth are arranged on the edge of the opening of the inner container barrel.
Furthermore, a hidden handle is arranged at the bottom of the inner container barrel.
The present invention also provides a float glass produced using any of the above float glass production apparatuses.
The invention has the beneficial effects that: the invention can prevent the gas in the tin bath from entering the transition roller table and prevent the tin oxide from refluxing and polluting the tin liquid.
Drawings
FIG. 1 is a schematic view of the structure of a float glass manufacturing apparatus in an embodiment;
FIG. 2 is a schematic view of the structure of the deflector and the tin bath in the embodiment;
FIG. 3 is an assembly view of the material collecting hopper, the cover plate and the inner container tube in the embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment aims to solve the problem that the coating device cannot be moved to the outside of a float tin bath for cleaning, and simultaneously ensures the stability of the suspension structure and the coating device when the coating device moves outwards.
Examples
As shown in fig. 1, the float glass manufacturing apparatus sequentially comprises a melting furnace 10, a tin bath 20 and a transition roller table 30 according to the flowing direction of a glass melt 1, wherein the joints among the melting furnace 10, the tin bath 20 and the transition roller table 30 are all sealed, the inlet of the tin bath 20 is sealed by molten glass under the normal production condition, the periphery of the shell of the tin bath 20 and the joints among the melting furnace 10, the tin bath 20 and the transition roller table 30 are sealed by sealing cement, that is, only the outlet of the transition roller table 30 is connected with the inlet of an annealing furnace (not shown in the figure); the outlet of the transition roller table 30 is provided with a gas sealing device 40, the tin bath 20 is filled with protective gas, usually the protective gas is inert gas or weak reductive gas, such as nitrogen, the outlet of the tin bath 20 is provided with a guide sleeve 50, the periphery of the guide sleeve 50 and the outlet of the tin bath 20 are sealed, a glass ribbon formed by the glass melt 1 in the tin bath 20 enters the transition roller table 30 only through the guide sleeve 50, the gas pressure generated by the gas sealing device 40 is greater than the pressure of the protective gas filled in the tin bath 20, and the tin bath 20 is further provided with a fluid director 60.
Based on the technical scheme, the gas sealing device 40 sprays protective gas at the outlet of the transition roller table 30 to form a gas curtain, the inside of the transition roller table 30 is isolated from the outside, and gas convection is prevented, further, the positive pressure gas curtain formed by the gas sealing device 40 can gradually fill the inside of the transition roller table 30 with the protective gas, and meanwhile, the tin bath 20 can be filled with the protective gas, because the gas pressure generated by the gas sealing device 40 is greater than the pressure of the protective gas filled in the tin bath 20, the gas pressure inside the transition roller table 30 can form a shielding effect at the outlet of the tin bath 20, and the mixed gas with tin oxide particles and tin vapor in the tin bath 20 is prevented from entering, so that the tin vapor and the tin oxide particles are prevented from condensing in the shell of the transition roller table, and the roller table and the glass surface are polluted, and further the glass quality is influenced; meanwhile, because the tin bath 20 is also provided with the fluid director 60, and the inlet end of the fluid director 60 is communicated with the tin bath 20, the positive pressure gas environment generated by the gas sealing device 40 can be balanced by the fluid director 60, that is, the following gas environment characteristics exist in the whole float glass manufacturing device: only protective gas generated by the gas sealing device 40 is always arranged in the transition roller table 30; the mixed gas in the tin bath 20 can not enter the transition roller table 30 to pollute the roller way and the glass plate surface; the pressure difference between the inside of the transition roller table 30 and the inside of the tin bath 20 causes the pure protective gas in the transition roller table 30 to enter the tin bath 20, meanwhile, the excessive pressure generated in the tin bath 20 is released through the fluid director 60, thereby balancing the pressure in the tin bath 20, and when the mixed gas is released through the fluid director 60, the fluid director 60 also intercepts the tin oxide particles formed by oxidation, thereby preventing the tin oxide from flowing back and polluting the tin liquid. Meanwhile, the guide sleeve 50 arranged at the outlet of the tin bath 20 has the characteristic of a flattened channel, and compared with the outlet of the original open tin bath 20, the guide sleeve 50 prolongs the gas exchange channel between the tin bath 20 and the transition roller table 30, reduces the effective area of gas exchange, and is beneficial to further preventing the pure protective gas in the transition roller table 30 from entering the tin bath 20.
As shown in fig. 1, the gas sealing device 40 is composed of an upper gas sealer and a lower gas sealer, which are respectively disposed on the upper and lower plate surfaces of the glass ribbon, thereby forming a complete gas curtain. Of course, two horizontal body sealers may be added on both sides of the glass ribbon to improve the sealing of the gas curtain. The gas sealing device 40 is connected to an external gas supply device (such as a gas pump or a high-pressure gas tank) through a pipeline, and a pressure monitor and a flow control valve are usually arranged on the pipeline.
The guide sleeve 50 is made of high-temperature ceramic material, and the high-temperature ceramic has a melting point of 1700 ℃, so that the requirement of a production process of float glass can be met.
In addition, as shown in fig. 1, in order to prevent the glass ribbon from being deformed due to direct contact between the glass ribbon and the inner wall of the guide sleeve 50, a driving roller 51 may be installed inside the guide sleeve 50 to support the glass ribbon.
As shown in fig. 2, the flow guider 60 includes an acceleration pipe 61, a separation pipe 62 and an exhaust pipe 63 which are sequentially communicated, a collection hopper 64 is arranged below the separation pipe 62, the inner diameter of the separation pipe 62 is larger than that of the acceleration pipe 61, and the length of the acceleration pipe 61 is smaller than that of the separation pipe 62.
The fluid director 60 is connected with the tin bath 20 through a flange at the inlet end of the accelerating tube 61, the mixed gas with tin oxide in the tin bath 20 flows into the separating tube 62 through the accelerating tube 61, the speed of the gas flow in the accelerating tube 61 is fast, the distance is short, and the tin oxide particles cannot settle at the position; after the airflow enters the separation tube 62, because the cross section of the airflow is larger than that of the acceleration tube 61 (usually, the cross section area of the inner part of the separation tube 62 is 5-9 times of that of the acceleration tube 61), the airflow speed is slow, the tin oxide particles settle at the airflow speed, the airflow enters the collection hopper 64, and the clean gas is discharged from the exhaust tube 63. Therefore, the air pressure in the tin bath 20 is balanced by the fluid director 60, and simultaneously, tin oxide particles can be collected, so that the fluid director 60 is prevented from being blocked, the cleaning is convenient, and the environment is protected.
As shown in fig. 2, in order to prevent the external air from flowing in series with the protective gas inside the tin bath 20 through the flow guider 60, an exhaust valve 65 is further installed at the air outlet end of the exhaust pipe 63, and the exhaust valve 65 is a one-way valve, which can allow the gas inside the tin bath 20 to be exhausted and can prevent the external air from entering the tin bath 20 to cause the tin bath to be oxidized.
As shown in fig. 3, the bottom of the collecting hopper 64 is provided with an opening and a cover plate 641 that is sealed at the opening, the cover plate 641 can be connected by a sealing ring in a sealing manner, and the cover plate 641 can be opened in a rotating manner, so as to clean the tin oxide particles in time.
As shown in fig. 3, an inner tube 642 having an open top is provided inside the collection hopper 64, and serrations 643 are provided at an opening edge of the inner tube 642. The purpose of the serrations 643 is to peel off the deposits once the deposits are formed at the boundary between the opening of the inner tube 642 and the collection hopper 64 by rotating the inner tube 642, so that the deposits are generated by the serrations 643.
As shown in fig. 3, in order to facilitate the rotation of the inner tube 642, a hidden handle 644 is provided at the bottom of the inner tube 642.
The fixing connection means not described in detail in the above embodiments are all conventional connection means such as welding, screwing, and the like.
In another embodiment of the present invention, there is also provided a float glass manufactured using the above float glass manufacturing apparatus.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The float glass manufacturing device is characterized by comprising a melting furnace (10), a tin bath (20) and a transition roller table (30) which are hermetically connected with each other in sequence according to the flowing direction of a glass melt, wherein a gas sealing device (40) is arranged at an outlet of the transition roller table (30), protective gas is filled in the tin bath (20), the gas pressure generated by the gas sealing device (40) is greater than the pressure of the protective gas filled in the tin bath (20), and a fluid director (60) is further arranged on the tin bath (20).
2. Float glass manufacturing installation according to claim 1, characterised in that a guide sleeve (50) is arranged at the outlet of the tin bath (20), the outer wall of the guide sleeve (50) being sealingly connected to the outlet of the tin bath (20).
3. Float glass manufacturing installation according to claim 2, characterised in that the guide sleeve (50) is a high temperature ceramic material.
4. The float glass manufacturing apparatus according to claim 3, wherein a driving roller (51) is further installed inside the guide sleeve (50) to support the glass ribbon.
5. The float glass manufacturing apparatus according to any one of claims 1 to 4, wherein the gas sealing apparatus (40) comprises an upper gas sealer and a lower gas sealer, which are respectively located at upper and lower plate surfaces of the glass ribbon.
6. The float glass manufacturing apparatus according to claim 5, wherein the flow guide (60) comprises an acceleration pipe (61), a separation pipe (62) and an exhaust pipe (63) which are sequentially communicated, wherein a collection hopper (64) is arranged below the separation pipe (62), the inner diameter of the separation pipe (62) is larger than that of the acceleration pipe (61), and the length of the acceleration pipe (61) is smaller than that of the separation pipe (62).
7. The float glass manufacturing apparatus according to claim 6, wherein the bottom of the collection hopper (64) is provided with an opening and a cover plate (641) which is screwed to the opening.
8. The float glass manufacturing apparatus according to claim 7, wherein an inner tube (642) having an open top is provided inside the collection hopper (64), and a serration (643) is provided at an opening edge of the inner tube (642).
9. The float glass manufacturing apparatus according to claim 8, wherein a hidden handle (644) is provided at the bottom of the inner tube (642).
10. A float glass produced by using the float glass production apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010244794.1A CN111470761B (en) | 2020-03-31 | 2020-03-31 | Float glass manufacturing device and float glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010244794.1A CN111470761B (en) | 2020-03-31 | 2020-03-31 | Float glass manufacturing device and float glass |
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| Publication Number | Publication Date |
|---|---|
| CN111470761A true CN111470761A (en) | 2020-07-31 |
| CN111470761B CN111470761B (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010244794.1A Active CN111470761B (en) | 2020-03-31 | 2020-03-31 | Float glass manufacturing device and float glass |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010076968A (en) * | 2008-09-25 | 2010-04-08 | Nippon Electric Glass Co Ltd | Apparatus and method for manufacturing float glass |
| CN103951168A (en) * | 2014-01-23 | 2014-07-30 | 重庆万盛浮法玻璃有限公司 | Float glass production line melting furnace tin bath with clogging-free atmosphere flow deflector |
| EP2933237A2 (en) * | 2014-03-12 | 2015-10-21 | Calsitherm Verwaltungs GmbH | Device for manufacturing flat glass |
| CN105384326A (en) * | 2014-09-01 | 2016-03-09 | 旭硝子株式会社 | Atmosphere separation device, float glass manufacturing device and float glass manufacturing method |
| CN110668679A (en) * | 2019-11-26 | 2020-01-10 | 中国洛阳浮法玻璃集团有限责任公司 | Manufacturing device and manufacturing method of float glass |
-
2020
- 2020-03-31 CN CN202010244794.1A patent/CN111470761B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010076968A (en) * | 2008-09-25 | 2010-04-08 | Nippon Electric Glass Co Ltd | Apparatus and method for manufacturing float glass |
| CN103951168A (en) * | 2014-01-23 | 2014-07-30 | 重庆万盛浮法玻璃有限公司 | Float glass production line melting furnace tin bath with clogging-free atmosphere flow deflector |
| EP2933237A2 (en) * | 2014-03-12 | 2015-10-21 | Calsitherm Verwaltungs GmbH | Device for manufacturing flat glass |
| CN105384326A (en) * | 2014-09-01 | 2016-03-09 | 旭硝子株式会社 | Atmosphere separation device, float glass manufacturing device and float glass manufacturing method |
| CN110668679A (en) * | 2019-11-26 | 2020-01-10 | 中国洛阳浮法玻璃集团有限责任公司 | Manufacturing device and manufacturing method of float glass |
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| Publication number | Publication date |
|---|---|
| CN111470761B (en) | 2022-05-27 |
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