CN110818230A - Tin bath for float glass forming process - Google Patents
Tin bath for float glass forming process Download PDFInfo
- Publication number
- CN110818230A CN110818230A CN201911140427.0A CN201911140427A CN110818230A CN 110818230 A CN110818230 A CN 110818230A CN 201911140427 A CN201911140427 A CN 201911140427A CN 110818230 A CN110818230 A CN 110818230A
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- Prior art keywords
- tin
- tin bath
- bath
- bead
- liquid
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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
- C03B18/16—Construction of the float tank; Use of material for the float tank; Coating or protection of the tank wall
-
- 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)
Abstract
The invention provides a tin bath for a float glass forming process, wherein a semicircular or arc-shaped tin bath bead is arranged at the tail end of an outlet of the tin bath, a diversion trench is arranged on the outer side of the bead, the diversion trench is connected with a bottom recovery box through a diversion pipe, the recovery box is connected with the tin bath through a circulating pump and a liquid supply pipe, the bead is lower than the surface of tin liquid, the tin liquid flows out along the bead, flows into the bottom recovery box through the diversion trench and the diversion pipe, and is sent into a bath body in front of the bead through the circulating pump, so that a circular flow is formed. According to the invention, through the design of the bead, the diversion trench and the recovery box, the molten tin is recovered and added outside the trench, so that the invasion of outside air is effectively avoided, and the structure of the bead and the transition roller effectively prevents the occurrence of tin pick-up and tin ash defects, prevents the plate from being broken, improves the conveying efficiency of the transition roller, and ensures the surface quality of the glass plate.
Description
Technical Field
The invention relates to a tin bath for a float glass forming process, and belongs to the technical field of float glass production.
Background
The float process is a method for forming plate glass on the surface of molten metal tin after the molten glass in melting furnace flows into tin bath, the tin bath is key thermal equipment for float glass forming, the tin bath is loaded with tin liquor, the molten glass is floated on the surface of tin liquor, under the control of proper temperature gradient, under the action of edge-drawing machine, the plate glass with required thickness and width can be formed. After the glass plate is shaped, the glass plate is required to be led out to a transition roller at the tail end of a tin bath and is continuously sent to an annealing kiln.
The molten tin bath body is the closing device who comprises refractory material and steel sheet, and the molten tin is flourishing in the inslot, and the transition roller is outside export groove edge, lifts up the glass board with the transition roller, pulls out the molten tin bath, and when the glass board passes through the groove edge, if highly low, can cause glass board contact groove edge, causes the fish tail, leads to the fact disconnected board when serious, so the transition roller need have certain height, to ultra-thin glass, because the glass board is thin again soft, needs the transition roller height higher. The higher the elevation, the more difficult it is for the glass sheet to roll up the rolls, and the higher the probability of sheet breakage. If the internal plate breakage of the tin bath occurs, the glass plate needs to be manually conveyed to the transition roller at the fastest speed, otherwise, glass liquid is accumulated in the tin bath, the tin bath is full, and long-time production stop is caused in serious cases.
At molten tin bath export groove edge department, the glass board is lifted the back, can form the molten tin of certain distance at molten tin bath export district and expose in space atmosphere, commonly known as the triangular space, and this triangular space causes the molten tin oxidation to form the tin ash most easily, if glue and form tin ash defect on the cullet piece, glue and form the fish tail defect on the transition roller, consequently need in time detach the tin ash in the triangular space, generally set up the harrow sediment machine in both sides, then the manual work takes out the tin ash.
In the production process, the loss of the tin liquor can be caused due to various reasons, the liquid level of the tin liquor in the tank can be gradually reduced, and when the liquid level is reduced to a certain degree, the tin is required to be added, and the liquid level of the tin liquor is corrected. When adding tin, the tin is added at the rear part of the tin bath close to the edge seal opening or the slag removing opening of the outlet, the tin block is directly put into the tin liquid in the tin bath, is gradually melted under the heating of the temperature in the tin bath, and flows into the tin bath along with the tin liquid. When adding tin, need carry out the opening to sealed molten tin bath, probably lead to the invasion of outside air, the tin billet has reduced the molten tin temperature of throwing the entrance certainly in directly throwing into the molten tin, leads to the technology undulant.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a tin bath for a float glass forming process, which solves the problems of tin liquor recovery and tin adding, is quick and efficient, effectively avoids the invasion of outside air, prevents plate breakage, effectively prevents the defects of tin pick-up and tin ash, improves the conveying efficiency of a transition roller, and ensures the surface quality of a glass plate.
The technical scheme adopted by the invention for solving the problems is as follows: a tin bath for a float glass forming process is characterized in that a semicircular or arc-shaped tin bath bead is arranged at the tail end of an outlet of the tin bath, a diversion trench is arranged on the outer side of the bead and is connected with a bottom recovery box through a diversion pipe, the recovery box is connected with the tin bath through a circulating pump and a liquid supply pipe, the bead is lower than the surface of tin liquid, the tin liquid flows out along the bead and flows into the bottom recovery box through the diversion trench and the diversion pipe, and then the tin liquid is delivered into a bath body in front of the bead through the circulating pump from the liquid supply pipe to form a circulation.
Further, set up the transition roller behind the molten tin bath export, transition roller mounting height and inslot tin liquid level or be less than 0 ~ 10mm of tin liquid level, the glass board walks behind the molten tin bath export, pulls out the molten tin bath with the glass board through transition roller self rotational tension.
Furthermore, a plurality of conveying rollers are arranged behind the transition roller, the height of the conveying rollers is the same as the installation height of the transition roller or lower than the transition roller, and when the conveying rollers are lower than the transition roller, an inclined plane is formed by the conveying rollers and the transition roller.
Further, the bead is made of a refractory material.
Furthermore, a tin ash collecting and processing device and a tin ingot supplementing device are arranged in the recycling box.
Furthermore, a heating device is arranged in the recovery box, a heating device is arranged in the liquid supply pipe, the temperature of the tin liquor supplied to the tin bath is adjusted, and the temperature of the tin liquor in the tin bath is balanced.
Furthermore, the temperature of the tin liquor in the recovery box and the liquid supply pipe is 730-770 ℃.
Furthermore, a flowmeter is arranged at the edge opening, the flow of the tin liquor flowing out of the tin bath is measured, the liquid level height of the tin liquor in the tin bath is calculated, and then the height of the tin liquor in the tin bath is adjusted by adjusting the flow of a tin liquor pump.
Furthermore, the liquid level height calculation formula of the tin liquid is as follows: h = (2 g)-1/3×Q/mb)2/3H, H: the liquid level height of the tin liquid at the overflow edge port, g: acceleration of gravity, Q: flow rate of molten tin, m: overflow coefficient characteristic value, b: the width of the bead.
The beneficial technical effects of the invention are as follows: through bead, guiding gutter and collection box design, retrieve the tin liquid and arrange the groove in with tin outside, the effectual invasion of having avoided the outside air, the bead effectively prevents and treats the emergence of tin sticky and tin ash defect with the structure of transition roller, prevents the broken plate, has improved the conveying efficiency of transition roller, has ensured the surface quality of glass board.
Drawings
The technical scheme of the invention is described in detail in the following with reference to the accompanying drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of a prior art structure.
In the figure: 1. the tin bath bottom brick, 2, molten tin, 3, glass board, 4, transition roller, 5, honeycomb duct, 6, collection box, 7, liquid supply pipe, 8, bead, 9, guiding gutter.
Detailed Description
Example 1
As shown in figure 1, the tin bath for the float glass forming process is characterized in that a semicircular or arc-shaped tin bath bead 8 is arranged at the tail end of an outlet of the tin bath, a diversion trench 9 is arranged outside the bead 8, the diversion trench 9 is connected with a bottom recovery box 6 through a diversion pipe 5, the recovery box 6 is connected with the tin bath through a circulating pump and a liquid supply pipe 7, the bead 8 is lower than the surface of tin liquid 2, the tin liquid 2 flows out along the bead, flows into the bottom recovery box 6 through the diversion trench 9 and the diversion pipe 5, and then is sent into the bath body in front of the bead 8 from the liquid supply pipe 7 through the circulating pump to form a circulating current.
The molten tin bath device includes at the bottom of the molten tin bath brick 1, transition roller 4, honeycomb duct 5, collection box 6, liquid feed pipe 7, glass board 3 floats on 2 surfaces of molten tin, in the molten tin bath exit, set up a molten tin bath bead 8, this molten tin bath bead 8 is less than 2 surfaces of molten tin, molten tin 2 flows along molten tin bath bead 8, and flow to bottom collection box 6 in through guiding gutter and honeycomb duct 5, the rethread circulating pump promotes, send the molten tin anterior suitable position to through liquid feed pipe 7, form a circulation, under the effect of drawing the side machine thrust, go on transition roller 4 with the direct nature of glass board 3, transition roller 4 draws out the molten tin bath with the glass board outside the export groove.
Example 2
As a further optimization design of the embodiment example 1, the transition roller 4 is arranged behind the tin bath outlet, the installation height of the transition roller 4 is flush with the tin liquid level in the tin bath or is 0-10 mm lower than the tin liquid level, and after the glass plate passes through the tin bath outlet, the glass plate is pulled out of the tin bath through the self-rotation pulling force of the transition roller.
Set up a plurality of conveying rollers behind the transition roller, the height of a plurality of conveying rollers is the same with the mounting height of transition roller or is less than the transition roller, when being less than the transition roller, forms an inclined plane by a plurality of conveying rollers and transition roller.
Said bead 8 is made of refractory material.
And a tin ash collecting and processing device and a tin ingot supplementing device are arranged in the recycling box 6. The tin ash collecting and processing device and the tin ingot supplementing device adopt the structure of the prior art.
A heating device is arranged in the recovery box 6, a heating device is arranged in the liquid supply pipe, the temperature of the molten tin supplied to the molten tin bath is adjusted, and the temperature of the molten tin in the molten tin bath is balanced.
The temperature of the tin liquid in the recovery box and the liquid supply pipe is 730-770 ℃.
Example 3
As a further optimization design of the embodiment 1, a flow meter is arranged at the bead 8, the flow of the tin liquid flowing out of the tin bath is measured, the height of the liquid level of the tin liquid in the tin bath is calculated, and then the height of the tin liquid in the tin bath is adjusted by adjusting the flow of the tin liquid pump.
The liquid level height calculation formula of the tin liquid is as follows: h = (2 g)-1/3×Q/mb)2/3H, H: the liquid level height of the tin liquid at the overflow edge port, g: acceleration of gravity, Q: flow rate of molten tin, m: coefficient of overflowEigenvalue, b: the width of the bead.
As shown in figure 2, the structure is a schematic structure diagram in the prior art, compared with the prior art, the tin liquor is recovered and added outside the tank through the design of the bead, the diversion trench and the recovery box, so that the invasion of outside air is effectively avoided, the defects of tin pick-up and tin ash are effectively prevented and prevented due to the structure of the bead and the transition roller, plate breakage is prevented, the conveying efficiency of the transition roller is improved, and the surface quality of a glass plate is ensured.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
Claims (9)
1. A tin bath for a float glass forming process is characterized in that: the tin bath recovery device is characterized in that a semicircular or arc-shaped tin bath bead is arranged at the tail end of an outlet of a tin bath, a diversion trench is arranged on the outer side of the bead and is connected with a bottom recovery box through a diversion pipe, the recovery box is connected with the tin bath through a circulating pump and a liquid supply pipe, the bead is lower than the surface of tin liquid, the tin liquid flows out along the bead and flows into the bottom recovery box through the diversion trench and the diversion pipe, and then the tin liquid is sent into a bath body in front of the bead through the liquid supply pipe through the circulating pump to form a circulation.
2. The tin bath for a float glass forming process according to claim 1, wherein: set up the transition roller behind the molten tin bath export, transition roller mounting height and inslot tin liquid level parallel and level or be less than 0 ~ 10mm of tin liquid level, the glass board is walked tin bath export back, pulls out the molten tin bath with the glass board through transition roller self rotatory pulling force.
3. The float glass forming process tin bath according to claim 2, wherein: set up a plurality of conveying rollers behind the transition roller, the height of a plurality of conveying rollers is the same with the mounting height of transition roller or is less than the transition roller, when being less than the transition roller, forms an inclined plane by a plurality of conveying rollers and transition roller.
4. The tin bath for a float glass forming process according to claim 1, wherein: the bead is made of a refractory material.
5. The tin bath for a float glass forming process according to claim 1, wherein: and a tin ash collecting and processing device and a tin ingot supplementing device are arranged in the recycling box.
6. The float glass forming process tin bath according to claim 5, wherein: the recovery box is internally provided with a heating device, the liquid supply pipe is internally provided with a heating device, the temperature of the molten tin supplied to the molten tin bath is adjusted, and the temperature of the molten tin in the molten tin bath is balanced.
7. The float glass forming process tin bath according to claim 5, wherein: the temperature of the tin liquid in the recovery box and the liquid supply pipe is 730-770 ℃.
8. The tin bath for a float glass forming process according to claim 1, wherein: the edge opening is provided with a flowmeter, the flow of the tin liquor flowing out of the tin bath is measured, the liquid level height of the tin liquor in the tin bath is calculated, and then the height of the tin liquor in the tin bath is adjusted by adjusting the flow of the tin liquor pump.
9. The float glass forming process tin bath according to claim 8, wherein: the liquid level height calculation formula of the tin liquid is as follows: h = (2 g)-1/3×Q/mb)2/3H, H: the liquid level height of the tin liquid at the overflow edge port, g: acceleration of gravity, Q: flow rate of molten tin, m: overflow coefficient characteristic value, b: the width of the bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911140427.0A CN110818230A (en) | 2019-11-20 | 2019-11-20 | Tin bath for float glass forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911140427.0A CN110818230A (en) | 2019-11-20 | 2019-11-20 | Tin bath for float glass forming process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110818230A true CN110818230A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911140427.0A Pending CN110818230A (en) | 2019-11-20 | 2019-11-20 | Tin bath for float glass forming process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110818230A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115286219A (en) * | 2022-08-02 | 2022-11-04 | 山西利虎玻璃（集团）有限公司 | Novel float glass tin bath outlet drainage device |
| US20230084167A1 (en) * | 2021-09-09 | 2023-03-16 | James William Masten, JR. | Method for Forming Shaped Glass |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0656324A1 (en) * | 1993-11-30 | 1995-06-07 | SOCIETA' ITALIANA VETRO - SIV - S.p.A. | A process and device for the manufacture of flat glass sheet with improved characteristics |
| JP2003261339A (en) * | 2002-03-06 | 2003-09-16 | Carl Zeiss:Fa | Float glass melting furnace and method for float melting of glass |
| CN102039462A (en) * | 2010-08-31 | 2011-05-04 | 北大方正集团有限公司 | Tin liquor purification equipment, tin spraying treatment system and tin liquor purification method |
| CN106145620A (en) * | 2016-09-09 | 2016-11-23 | 蚌埠中建材信息显示材料有限公司 | A kind of thin float glass molding tin bath outlet device |
| CN106186643A (en) * | 2016-09-09 | 2016-12-07 | 蚌埠中建材信息显示材料有限公司 | A kind of float glass process shaped device for producing ultra-thin glass |
| CN206927790U (en) * | 2017-06-08 | 2018-01-26 | 中国洛阳浮法玻璃集团有限责任公司 | A kind of tin bath outlet of float glass |
-
2019
- 2019-11-20 CN CN201911140427.0A patent/CN110818230A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0656324A1 (en) * | 1993-11-30 | 1995-06-07 | SOCIETA' ITALIANA VETRO - SIV - S.p.A. | A process and device for the manufacture of flat glass sheet with improved characteristics |
| JP2003261339A (en) * | 2002-03-06 | 2003-09-16 | Carl Zeiss:Fa | Float glass melting furnace and method for float melting of glass |
| CN102039462A (en) * | 2010-08-31 | 2011-05-04 | 北大方正集团有限公司 | Tin liquor purification equipment, tin spraying treatment system and tin liquor purification method |
| CN106145620A (en) * | 2016-09-09 | 2016-11-23 | 蚌埠中建材信息显示材料有限公司 | A kind of thin float glass molding tin bath outlet device |
| CN106186643A (en) * | 2016-09-09 | 2016-12-07 | 蚌埠中建材信息显示材料有限公司 | A kind of float glass process shaped device for producing ultra-thin glass |
| CN206927790U (en) * | 2017-06-08 | 2018-01-26 | 中国洛阳浮法玻璃集团有限责任公司 | A kind of tin bath outlet of float glass |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230084167A1 (en) * | 2021-09-09 | 2023-03-16 | James William Masten, JR. | Method for Forming Shaped Glass |
| US11851357B2 (en) * | 2021-09-09 | 2023-12-26 | James William Masten, JR. | Method for forming shaped glass |
| CN115286219A (en) * | 2022-08-02 | 2022-11-04 | 山西利虎玻璃（集团）有限公司 | Novel float glass tin bath outlet drainage device |
| CN115286219B (en) * | 2022-08-02 | 2024-01-26 | 山西利虎玻璃（集团）有限公司 | Float glass tin bath outlet drainage device |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |
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| RJ01 | Rejection of invention patent application after publication |