CN102010118A - Float glass melting furnace - Google Patents
Float glass melting furnace Download PDFInfo
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- CN102010118A CN102010118A CN 201010114931 CN201010114931A CN102010118A CN 102010118 A CN102010118 A CN 102010118A CN 201010114931 CN201010114931 CN 201010114931 CN 201010114931 A CN201010114931 A CN 201010114931A CN 102010118 A CN102010118 A CN 102010118A
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Abstract
The invention discloses a float glass melting furnace, comprising a melting region which is arranged at the forepart of the melting furnace, wherein a charging opening is arranged at the front end of the melting region; a hot spot is arranged in the middle of the melting region along the length direction; a furnace bank is arranged at the hot spot of the melting region; the length dimension of the furnace bank is same as the width dimension of a pool of the melting region; the height of the furnace bank is 50-70% of the depth of the pool of the melting region; and the thickness of the furnace bank is 300-400mm. By adopting the structure, the float glass melting furnace can maintain the stability of two circulating glass melt flows in the melting furnace and prolong the residence time of the glass melt in the melting furnace to contribute to the clarification and the homogenization of the glass melt, and can prevent the dirty materials at the bottom of the pool of the melting region from directly flowing to a cooling region and prevent a part of the glass melt in the cooling region from reflowing to the melting region to be reheated, thereby improving the melting quality of the glass melt, saving the energy, and lowering the loss of the float glass melting furnace.
Description
Technical field
The present invention relates to a kind of float glass smelting kiln, particularly relate to a kind of structure and carry out improved float glass smelting kiln melting end.
Background technology
Float glass process is the main production of present sheet glass, and melting furnaces then are one of most important Thermal Equipments in the float glass process production technique.For a long time, strengthen scientific research, the problem that raising Glass Melting Furnace Design level is glass production research always, the designer was concerned about and paid attention to glass melter.Improve melting furnace structure and not only can reduce the glass production cost, and can improve glass quality.
Glass smelting adds admixtion exactly in the melting furnaces through heat and forms evenly, no bubble (promptly bubble, striped and calculus etc. being reduced to degree of admission), meets the process of the glass metal of moulding requirement.The glass smelting process has five stages, i.e. the formation of the formation of silicate, glass, clarification, homogenizing and cooling, and each stage, required temperature was different, promptly needed certain temperature schedule.For satisfying the required temperature of glass smelting process different steps, melting end two ends (charging opening and card neck place) temperature is lower, and middle (focus place) temperature is the highest.Because the temperature difference, just have temperature head, and the existence of temperature head causes the difference of specific gravity of glass metal, the glass metal of light specific gravity rises to the surface, heavyly drops to the bottom, thereby makes glass metal produce convection current, and this is called natural convection.Thermograde in melting end is big more, and this convection current is just strong more, thereby difference in specific gravity is big more.The result of natural convection be skin glass liquid from the high low zone of field flow orientation temperature of temperature, the deep layer glass metal then flows to the high temperature place from low temperature, forms a cycling stream.In addition, because the external force effect is called forced convection as the thrust of charging machine, the convection current that the drawing effect of production stream produces.The result of the comprehensive action of above convection current has produced two round-robin glass metals streams at melting end vertical (length direction).Whether stablizing of these two round-robin glass metal streams, the length of glass metal residence time in melting end directly has influence on the refining quality of glass, thereby has influence on quality product, output and cost.
For making two round-robin glass metal streams stable, in numerous melting furnace structure improvement projects, Chi Digupao and weir are comparatively feasible.And Chi Digupao is because brick is fragile at the bottom of the pond, leakiness material at the bottom of the pond, or bubbling pipe easily stops up etc. former thereby has limited its application.Weir though come into question, tried out decades, only has use as a kind of simple and easy to do measure on container glass kiln and other small-sized glass melters, do not use yet so far in the float glass smelting kiln of China at present.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of float glass smelting kiln is provided, it is provided with weir one at the focus place of the melting end of glass melter, in order to strengthen the effect of melting end focus, and make glass metal stream keep stable, thereby solved the existing weak point of float glass smelting kiln of prior art.
The technical solution adopted for the present invention to solve the technical problems is: a kind of float glass smelting kiln comprises the melting end of being located at the melting furnaces leading portion; The front end of this melting end is provided with charging opening; This melting end centre alongst is provided with focus; Focus place at melting end is provided with weir one, to keep the stable of focus both sides glass metal circulation; It is identical with the width dimensions in the pond of melting end that the length dimension of this weir is made as; The height of this weir be made as melting end the pond the degree of depth 50%～75%; The thickness of this weir is made as 300 millimeters～400 millimeters.
Described weir is built by laying bricks or stones by Corhart Zac-block (electric smelting AZS41# brick or electric smelting Z95 brick) and is formed.
The transverse shape of described weir is made as rectangle.
The transverse shape of described weir is made as rectangle, and the size on rectangular long limit equates with the height dimension of weir.
The transverse shape of described weir is made as trapezoidal.
The transverse shape of described weir is made as isosceles trapezoid, and the high size of isosceles trapezoid equates with the height dimension of weir.
A kind of float glass smelting kiln of the present invention is to be provided with weir one at the focus place of melting end, to keep the stable of focus front and back glass metal circulation.Focus place at melting end is vertically emerging first circulation glass metal stream to the glass metal circulation between the charging opening, and the glass metal circulation between the focus place of its melting end to the cooling end rear end is vertically emerging second circulation glass metal stream; This first circulation glass metal stream and the second circulation glass metal stream are provided with opposite flow direction, and this first circulation glass metal flows and second circulation glass metal stream emerges convection current in the focus both sides.The present invention is after the focus place of its melting end is provided with weir, strengthened the effect of melting end focus, make the convection current of win circulation glass metal stream and second circulation glass metal stream stronger, thereby glass metal stream can not changed because of the slight variation of producing conditions such as stream or kiln temperature, and promptly glass metal stream will keep steady state.In addition, because convection current has strengthened, make cycle index also corresponding increased of glass metal at melting end, and since the height of weir of the present invention be made as melting end the pond the degree of depth 50%～75%, thickness is made as 300 millimeters～400 millimeters, and it is identical with the width in the pond of melting end that length is made as, and makes this weir have barrier effect, thereby glass metal can directly not flow to cooling end from charging opening, thereby prolonged the residence time of glass metal in melting end; The height of weir can not be too high, flows to cooling end otherwise can hinder glass metal from melting end, and the height of weir can not be too low, highly low then act on not obvious.Weir of the present invention can also play the clarifying effect of shallow-layer, promptly force the glass metal of refiner all to flow to the upper strata of melting furnaces, and be skim, then the temperature of glass metal can further improve, and help the discharge of bubble, and then can accelerate clarifying speed greatly and improve the quality of glass metal.In addition, because the barrier effect of weir of the present invention, make the dirty material at the bottom of the melting end pond can directly not flow to cooling end, and be back to the cold also corresponding minimizing of glass liquid measure of part of melting end from cooling end, thereby not only help improving the refining quality of glass metal, and help the energy-saving and cost-reducing of this float glass smelting kiln.
The invention has the beneficial effects as follows: the design of weir of the present invention, can keep the stable of interior two the circulation glass metals stream of melting furnaces, prolong the residence time of glass metal in melting end, thereby help the clarification and homogenization of glass metal; The design of weir of the present invention, dirty material directly flows to cooling end at the bottom of can also stoping the pond of melting end, and the segment glass liquid of cooling end is back in the melting end and reheated, thereby helps improving the refining quality of glass metal, and helps the energy-saving and cost-reducing of float glass smelting kiln.
Below in conjunction with drawings and Examples the present invention is described in further detail; But a kind of float glass smelting kiln of the present invention is not limited to embodiment.
Description of drawings
Fig. 1 is the structural representation at the bottom of the embodiment one melting furnaces of the present invention pond;
Fig. 2 is the structural representation at the bottom of the embodiment two melting furnaces of the present invention ponds.
Embodiment
Embodiment one, sees also shown in Figure 1ly, and a kind of float glass smelting kiln of the present invention comprises the melting end 1 of being located at the melting furnaces leading portion; The front end of this melting end 1 is provided with charging opening 3; This melting end 1 centre alongst is provided with focus 4; Focus 4 places at melting end 1 are provided with weir 5 one, directly flow to the cooling end 2 of melting furnaces back segment from charging opening 3 to stop glass metal, keep the stable of focus both sides glass metal circulation; It is identical with the width dimensions in the pond of melting end 1 that the length dimension of this weir 5 is made as; The height of this weir 5 be made as melting end 1 the pond the degree of depth 50%～75%; The thickness of this weir 5 is made as 300 millimeters～400 millimeters.
Wherein,
Described weir 5 is built by laying bricks or stones by Corhart Zac-block and is formed, such as, can be electric smelting AZS41# brick or electric smelting Z95 brick etc.;
The transverse shape of described weir 5 is made as rectangle, and this rectangular length height that is this weir 5, and the weir 5 in this rectangle transverse section makes that the retaining wall of weir 5 is straight shape.
A kind of float glass smelting kiln of the present invention is to be provided with weir 5 one at focus 4 places of melting end 1, to keep the stable of focus 4 front and back glass metal circulation.Mechanism according to convection current formation, because focus 4 place's temperature are the highest, make focus 4 places of its melting end 1 vertically emerge first circulation glass metal stream 6 to the glass metal circulation between the charging opening 3, the glass metal circulation between focus 4 places of its melting end 1 to cooling end 2 rear ends is vertically emerging second circulation glass metal stream 7; This first circulation glass metal stream 6 and second circulation glass metal stream 7 is provided with opposite flow direction, and this first circulation glass metal stream, 6 and second circulation glass metal stream 7 emerges convection current in focus 4 both sides.The present invention is after focus 4 places of its melting end 1 are provided with weir 5, strengthened the effect of melting end focus 4, make the convection current of circulation glass metal the stream 6 and second circulation glass metal stream 7 of winning stronger, thereby glass metal stream can not changed because of the slight variation of producing conditions such as stream or kiln temperature, and promptly glass metal stream will keep steady state.In addition, because convection current has strengthened, make cycle index also corresponding increased of glass metal at melting end 1, and since the height of weir 5 of the present invention be made as melting end the pond the degree of depth 50%～75%, thickness is made as 300 millimeters～400 millimeters, and it is identical with the width in the pond of melting end 1 that length is made as, and makes this weir 5 have barrier effect, thereby glass metal can directly not flow to the cooling end 2 of melting furnaces back segment from charging opening 3, thereby prolonged the residence time of glass metal in melting end 1; The height of weir 5 can not be too high, flows to cooling end 2 otherwise can hinder glass metal from melting end, and the height of weir 5 can not be too low, highly low then act on not obvious.Weir 5 of the present invention can also play the clarifying effect of shallow-layer, promptly force the glass metal of refiner all to flow to the upper strata of melting furnaces, and be skim, then the temperature of glass metal can further improve, and help the discharge of bubble, and then can accelerate clarifying speed greatly and improve the quality of glass metal.In addition, because the barrier effect of weir 5 of the present invention, make the dirty material 8 at the bottom of the melting end pond can directly not flow to the cooling end 2 of melting furnaces back segment, and the cold glass liquid measure of part that is back to melting end 1 from cooling end 2 also can correspondingly reduce, thereby not only help improving the refining quality of glass metal, and help the energy-saving and cost-reducing of this float glass smelting kiln.
Embodiment two, see also shown in Figure 2, a kind of float glass smelting kiln of the present invention, the difference of itself and the foregoing description one is: its weir 5 ' transverse shape be made as isosceles trapezoid; And this isosceles trapezoid height be made as this weir 5 ' height, the weir 5 in this isosceles trapezoid transverse section ', make weir 5 ' retaining wall be ramp structure.The weir 5 of this trapezium-shaped ' can keep the stable of the interior first circulation glass metal stream of melting furnaces 6 and second circulation glass metal stream 7 equally, and prolong the residence time of glass metal in melting end 1, thus help the clarification and homogenization of glass metal; Dirty material 8 directly flows to cooling end 2 at the bottom of can stoping the pond of melting end 1, and the segment glass liquid of cooling end 2 is back in the melting end 1 and reheated, thereby helps improving the refining quality of glass metal, and helps the energy-saving and cost-reducing of float glass smelting kiln.
The foregoing description only is used for further specifying a kind of float glass smelting kiln of the present invention; but the present invention is not limited to embodiment; every foundation technical spirit of the present invention all falls into the protection domain of technical solution of the present invention to any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1. a float glass smelting kiln comprises the melting end of being located at the melting furnaces leading portion; The front end of this melting end is provided with charging opening; This melting end centre alongst is provided with focus; It is characterized in that: the focus place at melting end is provided with weir one; It is identical with the width dimensions in the pond of melting end that the length dimension of this weir is made as; The height of this weir be made as melting end the pond the degree of depth 50%～75%; The thickness of this weir is made as 300 millimeters～400 millimeters.
2. according to the described float glass smelting kiln of claim 1, it is characterized in that: described weir is built by laying bricks or stones by Corhart Zac-block and is formed.
3. according to claim 1 or 2 described float glass smelting kilns, it is characterized in that: the transverse shape of described weir is made as rectangle.
4. according to the described float glass smelting kiln of claim 3, it is characterized in that: the transverse shape of described weir is made as rectangle, and the size on rectangular long limit equates with the height dimension of weir.
5. according to claim 1 or 2 described float glass smelting kilns, it is characterized in that: the transverse shape of described weir is made as trapezoidal.
6. according to the described float glass smelting kiln of claim 5, it is characterized in that: the transverse shape of described weir is made as isosceles trapezoid, and the high size of isosceles trapezoid equates with the height dimension of weir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010114931 CN102010118A (en) | 2010-02-26 | 2010-02-26 | Float glass melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010114931 CN102010118A (en) | 2010-02-26 | 2010-02-26 | Float glass melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102010118A true CN102010118A (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010114931 Pending CN102010118A (en) | 2010-02-26 | 2010-02-26 | Float glass melting furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104058574A (en) * | 2014-06-27 | 2014-09-24 | 安徽吉曜玻璃微纤有限公司 | Novel throat |
| CN109455908A (en) * | 2018-12-29 | 2019-03-12 | 长兴旗滨玻璃有限公司 | Float glass tin bath, floatation glass production line and ultra-thin glass preparation process |
| CN109721222A (en) * | 2019-02-19 | 2019-05-07 | 东旭科技集团有限公司 | The control method of glass furnace and glass furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182808Y (en) * | 1994-02-04 | 1994-11-16 | 黄洪钧 | Throat for glass melting furnace |
-
2010
- 2010-02-26 CN CN 201010114931 patent/CN102010118A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182808Y (en) * | 1994-02-04 | 1994-11-16 | 黄洪钧 | Throat for glass melting furnace |
Non-Patent Citations (2)
| Title |
|---|
| 《材料科学与工程》 19981231 沈锦林等 玻璃熔窑中窑坎位置变化对液流温度场和速度场的影响 第61-65页 1-6 第16卷, 第4期 * |
| 《玻璃与搪瓷》 20071031 孙承绪 窑坎的研究 第28-32页，第10页 1-6 第35卷, 第5期 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104058574A (en) * | 2014-06-27 | 2014-09-24 | 安徽吉曜玻璃微纤有限公司 | Novel throat |
| CN109455908A (en) * | 2018-12-29 | 2019-03-12 | 长兴旗滨玻璃有限公司 | Float glass tin bath, floatation glass production line and ultra-thin glass preparation process |
| CN109455908B (en) * | 2018-12-29 | 2022-03-11 | 醴陵旗滨电子玻璃有限公司 | Float glass tin bath, float glass production line and ultra-thin glass preparation process |
| CN109721222A (en) * | 2019-02-19 | 2019-05-07 | 东旭科技集团有限公司 | The control method of glass furnace and glass furnace |
| CN109721222B (en) * | 2019-02-19 | 2022-03-04 | 东旭光电科技股份有限公司 | Glass kiln and control method thereof |
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Application publication date: 20110413 |