CN202785976U - Device for producing sheet glass by use of overflow down-drawing method - Google Patents
Device for producing sheet glass by use of overflow down-drawing method Download PDFInfo
- Publication number
- CN202785976U CN202785976U CN 201220371749 CN201220371749U CN202785976U CN 202785976 U CN202785976 U CN 202785976U CN 201220371749 CN201220371749 CN 201220371749 CN 201220371749 U CN201220371749 U CN 201220371749U CN 202785976 U CN202785976 U CN 202785976U
- Authority
- CN
- China
- Prior art keywords
- static tube
- sheet glass
- glass melt
- glass
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000005357 flat glass Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title abstract description 11
- 238000003280 down draw process Methods 0.000 title abstract description 5
- 239000000156 glass melt Substances 0.000 claims abstract description 49
- 230000003068 static effect Effects 0.000 claims description 77
- 238000013461 design Methods 0.000 abstract description 11
- 230000033001 locomotion Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract 4
- 239000011521 glass Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003283 slot draw process Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000006124 Pilkington process Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Glass Melting And Manufacturing (AREA)
Abstract
The utility model relates to a device for producing sheet glass by use of an overflow down-drawing method. The device comprises an isostatic pressure tube (4) and a material feeding tube (3) for feeding glass melt to the isostatic pressure tube (4). The device is characterized in that the outlet of the material feeding tube (3) is of a slot type structure. The utility model provides the device for producing sheet glass by use of the overflow down-drawing method, wherein new designs of the isostatic pressure tube and the outlet of the material feeding tube are adopted, the material feeding tube is placed in the center of the isostatic pressure tube, therefore the distance difference generated by the movement of the glass melt in the isostatic pressure tube is reduced, so that the temperature loss of the glass melt is reduced correspondingly.
Description
Technical field
The utility model relates to a kind of device that uses overflow downdraw to produce sheet glass.
Background technology
Overflow downdraw (fusion downdraw method) is a kind of method of producing sheet glass in the glass preparation technology.Compare with other technique, for example, float glass process and slit tractive technique, overflow downdraw is produced the sheet glass with excellent planeness and slickness surface, and need not use post forming technique (grinding, polishing etc.).
In a kind of exemplary fusion downdraw technique, frit drops in the smelting furnace and melts, and being melted by frit is glass melt, and glass melt arrives feeder sleeve through the transmission of conduit, and glass melt is supplied to the groove in the static tubes such as being formed on refractory materials.Melten glass overflows to form two and half glass sheets at the top of the groove that waits the static tube both sides, sheet glass flow downward and subsequently along etc. the flow downwards of static tube.Two boards converges in the bottom of waiting static tube or root, and they fuse together and form the monolithic sheet glass there.In this production process, the effect of smelting furnace is to melt proportioning is good as requested frit and glass melt is carried out to a certain degree processing; The effect of conduit is to carry glass melt further to process simultaneously; Provide the attachment of a good overflow glass melt Deng the Main Function of static tube, reach the effect of controlling water kick quality; The Main Function of molding device is rational cooling rate of control, guarantees that sheet glass has the parameters such as qualified planeness, internal stress.
The shortcoming of overflow downdraw is that the means of the correlation parameters such as control formation sheet thickness, internal stress, surface finish are limited.The shortcoming of overflow downdraw is that also glass melt leaves feeder sleeve, the static tube such as enter after, can't adopt the conduction-type heating, can only adopt thermal-radiating method that glass melt is incubated.
Traditional overflow downdraw is produced liquid crystal flat glass, at one end connect an entrance pipe Deng static tube, the effect of this entrance pipe is that the glass melt that will vertically stay is converted to horizontal flow, and simultaneously so that the glass melt horizontal direction has certain movement velocity, just can guarantee to wait the glass of the entrance of static tube to pile up (waiting the upper surface on the bottom land of static tube and weir herein apart from maximum), also guarantee the far-end (move distance is the longest) of the static tubes such as glass melt arrival herein.Its shortcoming is: because glass melt differs larger in the internal motion distance that waits static tube, cause the temperature loss of glass melt to differ, need to the temperature of glass melt be compensated, but radiation heating is difficult to accomplish point-to-point heating that poor dwindling acts on limited to glass temperatures.This range difference can be along with the increase of planar substrates glass, and it is larger to become gradually.The size of present market demands planar substrates glass is in continuous increase, and is inevitable during the existing of this contradiction.
As can see from Figure 2, glass melt differs very large at the move distance that waits static tube inside, and at the inlet side that waits static tube, the glass melt move distance is equivalent to 2 times bottom land and the difference of altitude of weir crest section adds the downward distance of wedge shape flanging; At the far-end that waits static tube, the glass melt move distance is equivalent to the whole length of static tube that waits and adds the downward distance of corresponding position wedge shape flanging.Can find out, flow to the move distance of glass melt of far-end obviously greater than the move distance of inlet side, and this range difference is also constantly becoming large along with the development of liquid crystal flat-panel technology.Although because the conduction of heat of glass melt itself and the compensating action of external heater can reduce because the temperature head that the move distance difference causes guarantees that minimizing of temperature head is difficult to accomplish.Because the shortage of its control device, the geometric shape of the static tube such as cause that the production process of overflow downdraw depends critically upon.
The utility model content
The purpose of this utility model provides a kind of device that uses overflow downdraw to produce sheet glass, can reduce glass melt at the range difference that waits the static tube motion, thereby reduces accordingly the temperature loss of glass melt.
A kind of device that uses overflow downdraw to produce sheet glass, comprise wait static tube and to etc. the feeder sleeve of static tube supply glass melt, its special feature is: the outlet of described feeder sleeve is the slit structure.
Wherein the vertical centre of feeder sleeve overlaps substantially with the vertical centre that waits static tube.
Wherein be separately installed with baffle plate at the two ends of waiting static tube.
Wherein the width of each baffle plate is all greater than the width that waits static tube.
The outlet of wherein said feeder sleeve is rectangular slot.
Leave the gap between the entrance of its medium static tube and the outlet of feeder sleeve.
Its medium static tube adopts symmetrical structure.
The utility model provides a kind of device that uses overflow downdraw to produce sheet glass, adopted new wait static tube and new feeder sleeve outlet to design, feeder sleeve is placed on etc. the central position of static tube, reduce glass melt at the range difference that waits the static tube motion, thereby reduced accordingly the temperature loss of glass melt.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is feeder sleeve in the background technology (3) and the mode of connection synoptic diagram that waits static tube (4);
Accompanying drawing 3 is feeder sleeve in the utility model (3) and the mode of connection synoptic diagram that waits static tube (4);
Accompanying drawing 4 is feeder sleeve in the utility model (3) and the mode of connection synoptic diagram that waits static tube (4).
Embodiment
Shown in Fig. 1,3,4, the utility model is a kind of device that uses overflow downdraw to produce sheet glass, comprise etc. static tube 4 and to etc. static tube 4 supply with the feeder sleeve 3 of glass melts, the outlet of described feeder sleeve 3 is the slit structure, specifically can adopt rectangular slot.Wherein the vertical centre of feeder sleeve 3 overlaps substantially with the vertical centre that waits static tube 4, and is separately installed with baffle plate at the two ends of waiting static tube 4, and the width of each baffle plate all greater than etc. the width of static tube 4.
Shown in Fig. 3,4, wait between the outlet of the entrance of static tube 4 and feeder sleeve 3 and leave the gap, and unsealing.Wait in addition static tube 4 to adopt symmetrical structure.Frit drops in the smelting furnace 1 and melts during use, and being melted by frit is glass melt, and glass melt arrives feeder sleeve 3 through the transmission of conduit 2, and glass melt is supplied to the groove in the static tubes such as being formed on refractory materials 4.
Embodiment 1;
Because the shortage of control device, the geometric shape of the static tube 4 such as cause that the production process of overflow downdraw depends critically upon.For the geometric shape that waits static tube 4, in this patent, adopted a kind of novel structure that waits static tube 4.Adopt the novel static tube 4 such as grade of this kind can reduce glass melt and waiting static tube 4 internal motions distance (namely reduce and do not heat run duration), reduction waits the temperature head of static tube 4 inner different positionss, guarantees that its weir crest section overflow that waits static tube 4 that is subjected to has identical pressure to outside glass melt.
Entrance pipe has been cancelled in the design of the medium static tube 4 of the utility model, also the introducing point of glass melt is changed in the mid-way of static tube 4 such as grade, curved design by waiting static tube 4 bottom lands is converted to tangential movement and accumulation upwards with the motion vertically downward of glass melt.
Another design focal point is that the outlet of feeder sleeve 3 adopted the new design of slit in the utility model, at first finish in the distribution that waits on static tube 4 length directions by feeder sleeve 3 outlets of slit, thereby initiatively reduced the range difference that glass melt moves in the groove that waits static tube 4, reduced because the temperature of the glass melt that the factor of range difference causes is uneven, guaranteed to wait the temperature of the glass melt in the groove of static tube 4 substantially equal, the thermosteresis that range ability causes is substantially equal, can improve greatly the quality of overflow, and the temperature control requirement for glass melt also is reduced to the consistence of only requiring its temperature, need not to control its temperature head, from control, comparatively convenient, reliably.
The utility model has adopted the structure design of Fig. 3,4 medium static tubes 4, glass melt equates in the longitudinal direction substantially in the distance of the outer wall motion that waits static tube 4, do not exist because the overflow distance that near-end and the difference of altitude of far-end cause different, reduce the heat that outwards passes to of glass melt, reduced the temperature head of glass melt.Simultaneously, because inlet zone is positioned at the mid-way of waiting static tube 4, the temperature distribution of glass melt is symmetrical with respect to the centre of static tube 4 such as grade, and is also very favourable for the temperature compensation of glass melt.
Can think that the utility model is the combination of slot draw method and overflow downdraw.Combine simultaneously the good gauge control advantage of slot draw method, removed the not good shortcoming of quality control on the surface of slot draw method; Combine the good surface quality of overflow downdraw, removed the higher gauge control of difficulty of slot draw method.Combine the advantage of these two kinds of methods, removed the shortcoming of these two kinds of methods, its unique shortcoming is higher with respect to overflow downdraw for the difficulty of device fabrication.
Should be noted that: the symmetric design that focuses on waiting static tube 4 of the present utility model, and the center of static tube 4 such as has been changed in feeder sleeve 3 position of introducing glass melts.But the center of feeder sleeve 3 does not limit with respect to the central position of waiting static tube 4 and aligns fully, can have certain offset.Bottom land curved design Deng static tube 4 can adopt mathematical model, Computer simulation and experiments data to combine and draw with the configuration design that waits static tube 4 weirs.It is the plane that the top on its weir does not limit, and can be to have the curved surface that certain curvature changes.Also do not limit in the middle of being lowly on the curved surface of the trench bottom of static tube 4, the curved surface that both sides are high can be the curved surface of arbitrary shape.The certain side-play amount in static tube 4 centers such as also can depart from Deng the groove of static tube 4 and the design on weir.
Claims (7)
1. device that uses overflow downdraw to produce sheet glass, comprise wait static tube (4) and to etc. the feeder sleeve (3) of static tube (4) supply glass melt, it is characterized in that: the outlet of described feeder sleeve (3) is the slit structure.
2. a kind of device that uses overflow downdraw to produce sheet glass as claimed in claim 1, it is characterized in that: wherein the vertical centre of feeder sleeve (3) overlaps substantially with the vertical centre of static tube such as grade (4).
3. a kind of device that uses overflow downdraw to produce sheet glass as claimed in claim 1 is characterized in that: wherein be separately installed with baffle plate at the two ends of waiting static tube (4).
4. a kind of device that uses overflow downdraw to produce sheet glass as claimed in claim 3, it is characterized in that: wherein the width of each baffle plate is all greater than the width that waits static tube (4).
5. such as the described a kind of device that uses overflow downdraw to produce sheet glass of any one in the claim 1 to 4, it is characterized in that: wherein the outlet of feeder sleeve (3) is rectangular slot.
6. such as the described a kind of device that uses overflow downdraw to produce sheet glass of any one in the claim 1 to 4, it is characterized in that: leave the gap between the outlet of the entrance of its medium static tube (4) and feeder sleeve (3).
7. such as the described a kind of device that uses overflow downdraw to produce sheet glass of any one in the claim 1 to 4, it is characterized in that: its medium static tube (4) adopts symmetrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220371749 CN202785976U (en) | 2012-07-30 | 2012-07-30 | Device for producing sheet glass by use of overflow down-drawing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220371749 CN202785976U (en) | 2012-07-30 | 2012-07-30 | Device for producing sheet glass by use of overflow down-drawing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202785976U true CN202785976U (en) | 2013-03-13 |
Family
ID=47813282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220371749 Expired - Lifetime CN202785976U (en) | 2012-07-30 | 2012-07-30 | Device for producing sheet glass by use of overflow down-drawing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202785976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106673406A (en) * | 2017-01-20 | 2017-05-17 | 东旭科技集团有限公司 | Glass production apparatus |
-
2012
- 2012-07-30 CN CN 201220371749 patent/CN202785976U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106673406A (en) * | 2017-01-20 | 2017-05-17 | 东旭科技集团有限公司 | Glass production apparatus |
| CN106673406B (en) * | 2017-01-20 | 2019-09-03 | 东旭科技集团有限公司 | A kind of glass production device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101381195A (en) | Fused glass flow control device and control method in glass plate production | |
| CN110563323B (en) | Platinum-rhodium alloy bushing plate for drawing high-quality flexible glass | |
| CN108996895B (en) | Glass substrate overflow shaping crystallization control device | |
| CN202785976U (en) | Device for producing sheet glass by use of overflow down-drawing method | |
| CN206635206U (en) | A kind of melting furnaces founded for electronic glass | |
| CN204174064U (en) | One kiln three line thin float glass production line | |
| CN109657263B (en) | Design method for width, height and wall thickness of overflow brick inlet groove | |
| CN204848629U (en) | Multi -temperature -zone heating continuous smelting stove | |
| CN202898217U (en) | Ultrathin float glass tin bath stopping flag device | |
| CN206438032U (en) | A kind of overflow brick front apron flow controlling device | |
| JP5892986B2 (en) | Composite glass forming system | |
| CN205710398U (en) | A kind of double dynamical deep layer card neck water bag apparatus | |
| CN219032002U (en) | Adjustable temperature overflow launder | |
| CN103922567B (en) | The manufacturing installation of sheet glass | |
| CN106673406A (en) | Glass production apparatus | |
| CN218755413U (en) | Structure for reducing float glass crystallization | |
| CN203833804U (en) | Float glass annealing kiln | |
| CN201317729Y (en) | Plate-width increased type overflow groove device for photoelectric glass production | |
| CN103553301B (en) | Production method of high-zebra-angle 2mm automobile float glass | |
| CN206438036U (en) | A kind of assisted heating device for glass substrate forming equipment | |
| CN106277723A (en) | The process units of a kind of plate glass and production method | |
| CN202785978U (en) | Device for improving overflow width | |
| CN104193164A (en) | Equipment for producing andesite continuous fiber and method for producing continuous fiber through equipment | |
| CN206352108U (en) | Overflow mechanism | |
| CN202785979U (en) | Temperature control device for flowing down molten glass from formed body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |