CN110255868A - A kind of float glass forming arrangement and forming method improving protective gas utilization efficiency - Google Patents
A kind of float glass forming arrangement and forming method improving protective gas utilization efficiency Download PDFInfo
- Publication number
- CN110255868A CN110255868A CN201910702280.3A CN201910702280A CN110255868A CN 110255868 A CN110255868 A CN 110255868A CN 201910702280 A CN201910702280 A CN 201910702280A CN 110255868 A CN110255868 A CN 110255868A
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- China
- Prior art keywords
- tin liquor
- protective gas
- ease
- glass
- forming tank
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- 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.)
- Granted
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 96
- 239000005329 float glass Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000007496 glass forming Methods 0.000 title claims abstract description 32
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 159
- 239000002184 metal Substances 0.000 claims abstract description 62
- 229910052751 metal Inorganic materials 0.000 claims abstract description 62
- 238000000465 moulding Methods 0.000 claims abstract description 29
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 126
- 239000011521 glass Substances 0.000 claims description 105
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 31
- 238000002844 melting Methods 0.000 claims description 28
- 230000008018 melting Effects 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000007493 shaping process Methods 0.000 claims description 20
- 230000008676 import Effects 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 claims description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 14
- 238000007667 floating Methods 0.000 claims description 13
- 238000012384 transportation and delivery Methods 0.000 claims description 13
- 238000000137 annealing Methods 0.000 claims description 12
- 239000011449 brick Substances 0.000 claims description 10
- 238000006124 Pilkington process Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000005357 flat glass Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910000953 kanthal Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 241000237983 Trochidae Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
- C03B18/06—Changing or regulating the dimensions of the molten glass ribbon using mechanical means, e.g. restrictor bars, edge rollers
-
- 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
- C03B18/18—Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
-
- 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
- C03B18/22—Controlling or regulating the temperature of the atmosphere above the float tank
Abstract
The present invention provides a kind of float glass forming arrangements and forming method for improving protective gas utilization efficiency; the float glass forming arrangement includes forming tank; tin liquor is poured into the molding slot cavity body; at least one anti-ease device is set above the tin liquor, the protective gas for preventing the tin liquor oxidation is passed through in the anti-ease device.The present invention, which makes protective gas directly act on molten metal surface by the way that anti-ease device is arranged above molten metal, prevents metal liquid oxidation, effectively prevents protective gas evolution, improves the utilization efficiency of protective gas.Meanwhile improved procedure of the invention is not necessarily to significantly be adjusted to existing forming tank, has saved the improving cost and investment cost of equipment.
Description
Technical field
The invention belongs to process of glass technical field, it is related to a kind of float glass forming arrangement and its forming method,
More particularly to a kind of float glass forming arrangement and forming method for improving protective gas utilization efficiency.
Background technique
Now, it as the rapid development of glass production technology, glass no longer only have single type, has developed suitable
Various types of glasswares for a variety of occasions.Difference can be divided into present plate glass according to the production process: flat
Glass sheet, float flat glass and calendering plate glass are evened up, among these, more common float glass production process is float glass process
Moulding process swims in heavy tin liquor surface using the small melten glass liquid of specific gravity, the glass metal of melting is because of itself weight
Under power, surface tension, the collective effect of lehr rollers drawing gravitation and edge machine, cooling and solidifying molding, produce required thickness and
The plate glass of width.
Float glass technology specifically includes that ingredient, fusing, molding and plated film, annealing and cutting.Wherein, it forms and plates
Film is a step of most critical in float glass process, molding coating process carried out in molten tin bath, therefore, molten tin bath naturally also at
For one of Thermal Equipment the most key in float glass system, it is the rectangle or front wide and rear narrow for filling tin liquor
The trumpet type groove body of middle shrinkage, molten tin bath consist of three parts: input end, molten tin bath ontology and outlet end (transition roller table), import
End is the transition position of molten tin bath and melting furnaces, and outlet end is the junction of molten tin bath and annealing kiln, and molten tin bath ontology is one with steel plate and resistance to
The cuboid confined space that fiery material is built up.
It is easily oxidized generation tin oxide after meeting oxygen due to tin liquor, is sticked to glass surface, causes glass defect, therefore usually
It is connected with a certain amount of protective gas into molten tin bath, and forms the normal pressure of tens pas in molten tin bath, to prevent from containing outside molten tin bath
The gas of oxygen is into people.Glass metal, which enters after molten tin bath, to be completed to shakeout on tin liquor face, polishes and drawn thin or heap is thick to form one continuously
Glass tape, N is full of in molten tin bath always2And H2Equal protective gas, to reduce tin liquor oxidation.
CN207347388U discloses a kind of floatation glass production line tin groove device, and the tin groove device has molten tin bath
Ontology；Tin liquor is placed in the molten tin bath ontology, and floating has glass tape in the top of the tin liquor；The bottom of the molten tin bath ontology
Portion is provided with the graphite bar to reduce molten tin backflow, improve tin liquor convection current；The graphite bar is disposed in parallel two
Item；The tin groove device is additionally provided with the check apron to separate glass tape and exposed tin liquor face；The check apron is position
In the multiple of ribbon width direction two sides.
CN208279494U discloses a kind of float glass tin bath, including bottom case, and the bottom case has accommodating chamber, and conduct
Support construction is used to provide support to the float glass tin bath；Main insulating brick-layer is mounted on the inside of the accommodating chamber for shape
At the container for holding tin liquor, and wide section, the contraction section, narrow section of the float glass tin bath is collectively formed with the bottom case；And
Auxiliary insulating brick-layer, the auxiliary insulating brick-layer is set on described narrow section of the main insulating brick-layer, and can reduce the tin
The width ratio of narrow section of slot and the wide section of the molten tin bath.
CN109455908A discloses a kind of float glass tin bath, the molding for ultra-thin glass, comprising: groove body, it is described
Groove body includes successively along the feeding inlet of groove body length direction setting, wide section and contraction section, and the width section includes described in adjoining
The high-temperature region of feeding inlet, the middle warm area of the adjacent contraction section and between the high-temperature region and the middle warm area at
Type area；Multipair flag formula keeps off flag, is arranged at intervals on the middle warm area and/or shaping area along the length direction of the groove body；And it is more
Flag is kept off to immersion, is arranged at intervals on the high-temperature region along the molten tin bath length direction.
But the problem of published float glass tin bath is easy a large amount of evolutions there are still protective gas in the prior art, this is
Due to molten tin bath top shell at a distance from tin liquor farther out, protective gas is passed through after molten tin bath and does not contact with tin liquor also, is escaped by tin bath outlet end
Ease, causes protective gas that can not play its anti-oxidation effect completely.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of to improve protective gas utilization efficiency
Float glass forming arrangement and forming method make protective gas directly act on tin by the way that anti-ease device is arranged above tin liquor
Liquid surface prevents tin liquor from aoxidizing, and effectively prevents protective gas evolution, meanwhile, improved procedure of the invention is to existing forming tank
Structure has saved the improving cost and investment cost of equipment without significantly being adjusted.
To achieve this purpose, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of float glass forming arrangement for improving protective gas utilization efficiency, it is described
Float glass forming arrangement include forming tank, pour into tin liquor in the molding slot cavity body, setting is extremely above the tin liquor
Lack an anti-ease device, the protective gas for preventing the tin liquor oxidation is passed through in the anti-ease device.
The present invention, which makes protective gas directly act on tin liquor surface by the way that anti-ease device is arranged above tin liquor, prevents tin
Liquid oxidation effectively prevents protective gas evolution, improves the utilization efficiency of protective gas.Meanwhile improved procedure of the invention
To existing molding slot structure without significantly being adjusted, the improving cost and investment cost of equipment have been saved.
Although in addition, also asking those skilled in the art it is noted that occurring what applicant voluntarily founded in the present invention
Vocabulary of terms, but it is the known device component of this field, only changes reference title, and general structure is still public with this field institute
The part of appliance known is similar.Such as: " forming tank " that occurs is " molten tin bath " generally in the art in the present invention, structure with
The structure of " molten tin bath " generally maintains unanimously, within the scope of difference place is only that the application to the restriction of forming tank, other structures
And components are consistent with general molten tin bath well known in the art.
As a preferred technical solution of the present invention, it is provided at the top of the forming tank for installing heating cable
Bus-bar room.Heating cable of the present invention refers to the heating device of the transformer and top that are electrically connected above molding slot shell
Cable.
In addition, forming tank should also include inlet end and an outlet end, input end be docked with melting furnaces (melting furnaces for by raw material into
Row melting, this is known to those skilled in the art, and this will not be repeated here), the glass metal melted in melting furnaces is through runner
Into forming tank, this section of thermal technology's structure is known as the input end of forming tank, and the structure of runner is optionally with shrinkage type, through-type
Or trumpet type, refractory material used in runner, which must assure that, to be corroded and be washed away with resistance to glass metal, and will not be dirty after water eroding and flooding
Glass metal is contaminated, does not generate bubble, good heat stability, surfacing flawless in use process.The outlet end of forming tank with move back
(annealing kiln is used to carry out annealing operation, similarly, the structure and function of annealing kiln to the glass tape for leaving forming tank for fiery kiln docking
Also known to those skilled in the art, this will not be repeated here, in addition, glass tape is that glass metal is formed through forming tank cooling and solidifying
Product afterwards, the glass tape appeared below can do identical understanding), the structure of outlet end determines the air-tightness of forming tank, outlet
End mainly includes adjustable roller-way and check apron, and adjustable roller-way is for generating " climbing " power, drawing glass tape travel and progressively disengaging tin
Liquid；Check apron is used to increase the outlet pressure of protective gas, prevents external air access forming tank.In addition, molding groove body includes
Slot bottom, breastwork and top cover, slot bottom are the cavity bottom for the forming tank that the present invention limits, and material therefor is refractory material, optionally
Refractory material for slot bottom of the present invention includes refractory brick or refractory concrete, wherein refractory brick is clayey, uses fire resisting
When brick laying groove bottom, it is desirable that the specification of refractory brick is accurate, and each face is smooth, and brickwork joint is aligned when paving, and every piece of brick is used
Ironware is connected and fixed with bottom steel construction, to prevent tin liquor from causing brick to float after brickwork joint infiltration；Refractory concrete be it is a kind of not
Amorphous refractory when doing slot bottom with refractory concrete, without calcining, simple process in advance, can be prefabricated into component assembling, can also
In-place forming.Top cover is the top for the molding slot cavity body that the present invention limits, and mostly uses flat furred ceiling all-sealed structure greatly, top cover
Material and shape are different, and heating device is arranged on top cover.Breastwork refers to the wall between top cover and forming tank sidewall block
Body is built into the thermal insulation material of excellent heat insulating performance, and outsourcing iron sheet, main function is to be sealed to type groove.It should be noted that slot
Bottom, breastwork and top cover are the technical terms of this field, can be understood by known meaning.In addition, the float glass process that the present invention limits
Device for shaping glass should also include achievable technique completely necessary components, though being not explicitly defined is those skilled in the art
Well known to member, details are not described herein.
Preferably, protective gas import is provided at the top of the bus-bar room.Illustratively, two are arranged at the top of bus-bar room
A protective gas import, one is used to be passed through nitrogen, and one for being passed through hydrogen, nitrogen and the hydrogen cooling bus in bus-bar room
While, also produce mixed uniformly effect.
Preferably, protective gas is filled in the bus-bar room.Since the temperature of bus-bar room does not allow more than 260 DEG C, because
This is by being filled with the bus stored in the cooling bus-bar room of protective gas into bus-bar room.
In addition, being sticked to glass surface since tin liquor is easily oxidized generation tin oxide, glass appearance defect is caused, is influenced
Product yield, therefore tin liquor oxidation can be effectively prevented to keep the polishing degree of glass, in addition, also having by being filled with protective gas
The defects of conducive to iris, tin sticky and optical distortion is reduced.It can be connected to by pipeline between bus-bar room and forming tank or phase
It is mutually independent, if two chambers are mutually indepedent it is also ensured that protective gas enters forming tank by bus-bar room, this is because forming tank
There are gap between the suspended block of top, protective gas can enter forming tank by gap and act on tin liquor surface.
Preferably, the protective gas is reducibility gas.Since the purpose of protective gas is that tin liquor is prevented to be oxidized,
Therefore, use reducibility gas as protective gas in the present invention.
Preferably, the protective gas is the mixed gas of nitrogen and hydrogen.
Preferably, tin liquor is poured into the forming tank, floating has the glass metal for flowing into forming tank above tin liquor.
As a preferred technical solution of the present invention, melt flow direction, which is provided at least one, prevents protection gas
The anti-ease device of body escape, the anti-ease device are vacantly set to above the tin liquor for not floating glass metal.
Preferably, the protective gas for preventing tin liquor from aoxidizing is passed through in the anti-ease device, protective gas is in anti-ease
It is directly contacted under the action of device with tin liquor.
As a preferred technical solution of the present invention, the anti-ease device is the anti-ease box of one side opening, described
Anti- ease box is open towards tin liquor surface.
Preferably, the anti-external delivery pipe of ease box, the delivery pipe support anti-ease box and to anti-ease box for fixed
Inside it is passed through protective gas.Protective gas enters anti-ease box via delivery pipe, since the opening of anti-ease box is towards tin liquor, protects
Gas can directly be contacted with tin liquor, play effective anti-oxidation effect to tin liquor, in addition, the anti-ease box of setting additionally aid it is anti-
Only protective gas is exported by forming tank and is escaped, and is saved protective gas dosage, is improved the service efficiency of protective gas.
Preferably, the anti-ease box is vacantly set to above the tin liquor for not floating glass metal.The main hair of tin liquor oxidation
Life is in the region for not floating glass metal, and therefore, anti-ease box provided by the present application, which is typically provided at, does not float glass metal
Above tin liquor, and guarantees that multiple anti-ease boxes are completely covered and be exposed to outer tin liquor.
Preferably, anti-ease box opening is close to not float the tin liquor surface of glass metal and not contacted with tin liquor.
As a preferred technical solution of the present invention, the forming tank is internally provided with gas piping, the gas
The input end of pipeline is located at bus-bar room, and the gap that the outlet end of the gas piping passes through between the top cover brick of forming tank enters molding
Slot.Other than anti-ease device is arranged gas piping is also arranged, so that protective gas is via flue in the present invention inside forming tank
Road is passed directly to tin liquor surface, and the oxidation-protective effect for strengthening protective gas also effectively prevents gas escape or waves via brickwork joint
Hair.
Preferably, heating device is additionally provided at the top of the forming tank.Heating device is mainly used for: (1) baking molding
Slot；(2) safeguard and adjust the temperature of each process island in forming tank；(3) there is forming tank when accident to keep the temperature.
Preferably, the heating device is electrical heating elements.Illustratively, electrical heating elements commonly used in the art include
Three-phase Elema or Kanthal wire.
As a preferred technical solution of the present invention, the float glass forming arrangement further includes traction device, institute
Traction device is stated for pulling glass metal and controlling thickness of glass after molding.Glass metal on high temperature tin liquor face is in no external force
Under effect, suffered by gravity and surface tension reach balance, there are a predictable fixed values for the thickness of glass tape, referred to as
Equilibrium thickness, typically about 6~7mm.Because the surface tension of glass changes, equilibrium thickness with the temperature of glass metal
With the different differences of actual conditions.Actually due to additional longitudinal pulling force, this value is smaller.And in actual production, balance
Thickness is often unable to satisfy the diversified demand of client, and therefore, the actual (real) thickness of glass tape to be made is thinner or thicker than equilibrium thickness,
Corresponding measure should be taken.When being thinner than the float glass of equilibrium thickness such as production, mechanical La Bianfa can be used, i.e., in forming tank middle section
Several edge machines are arranged in the both sides of glass tape, mainly serve and laterally draw side and prevention lehr roller (lehr roller is used for
Glass tape is sent in annealing kiln, the component is known to those skilled in the art, and this will not be repeated here) longitudinal pulling force pass
It is delivered on the glass tape of high-temperature region, to reduce its cross-direction shrinkage, after improving pull speed, glass tape is gradually drawn thin, thickness
Also it decreases.And produce and graphite rib device then is set in forming tank high-temperature region two sides when being thicker than the float glass of equilibrium thickness,
To prevent glass metal from making thinner.
Preferably, the traction device is edge machine.Thin, product is thick and control glass is taken away for throttling, drawing for edge machine
To, its working principle is that, by the glass tape travel on the edge wheel tractive load tin liquor face of edge machine front end, and pass through tune
Horizontal pivot angle, the level inclination etc. for saving edge wheel and linear velocity and edge wheel, reach control ribbon thickness and stabilized glass
The purpose of bandwidth.
Second aspect, the present invention provides a kind of float shaping method, the float shaping method is
It is carried out in float glass forming arrangement described in one side.
The float shaping method specifically includes:
Tin liquor is poured into forming tank, and the protective gas for preventing tin liquor from aoxidizing, the glass of melting are passed through into anti-ease device
Glass liquid stream swims in tin liquor surface after entering forming tank and the exhibition of shakeouing under the action of gravity and surface tension is thin, send after cooling and shaping
From forming tank.
As a preferred technical solution of the present invention, the float shaping method further include:
(I) after pouring into tin liquor in forming tank, it is passed through protective gas to protective gas import, protective gas enters through bus-bar room
Gas piping is passed through forming tank by gas piping, directly contacts with tin liquor surface, prevents tin liquor from aoxidizing；
(II) glass metal tin liquor surface shakeout exhibition it is thin during, traction device forming tank two sides pull glass metal to
Forming tank opening direction is mobile.
As a preferred technical solution of the present invention, the temperature of the tin liquor is 700~900 DEG C, such as can be 700
DEG C, 720 DEG C, 740 DEG C, 760 DEG C, 780 DEG C, 800 DEG C, 820 DEG C, 840 DEG C, 860 DEG C, 880 DEG C or 900 DEG C.
Preferably, the temperature of the glass metal is 800~1200 DEG C, such as can be 800 DEG C, 850 DEG C, 900 DEG C, 950
DEG C, 1000 DEG C, 1050 DEG C, 1100 DEG C, 1150 DEG C or 1200 DEG C.
Preferably, after glass metal is cooled to 500~700 DEG C molding be sent from forming tank, such as can be 500 DEG C, 520 DEG C,
540 DEG C, 560 DEG C, 580 DEG C, 600 DEG C, 620 DEG C, 640 DEG C, 680 DEG C or 700 DEG C.
Preferably, the protective gas is the mixed gas of nitrogen and hydrogen.
Preferably, the volume ratio of nitrogen and hydrogen is (90~97): (10~3) in the protective gas, such as can be with
It is 90:10,91:9,92:8,93:7,94:6,95:5,96:4 or 97:3.
The third aspect, the present invention provides a kind of float glass be melted system, the float glass be melted system according to
Float glass process route includes sequentially connected dosing, melting unit, forming unit and annealing unit.
The forming unit includes float glass forming arrangement described in first aspect.
It is melted in system in the float glass that the present invention limits and only forming unit is improved, other are such as charger sheet
Member, melting unit, forming unit and annealing unit etc. are well known to those skilled in the art, also disclosed in the prior art,
Within protection scope of the present invention and the open scope, prior art has disclosed or new technology in it is undocumented any of the above-described
Unit is used equally in the present invention.
Illustratively, the present invention provides a kind of specific float glass melting technology routes:
(I) ingredient: the feedstock deliveries such as sand, dolomite, lime stone, soda ash and saltcake to batch house are provided in batch house
Feed bin, hopper, conveyer belt, chute, dust arrester and necessary control system.Inside batch house, conveyer belt presses raw material
Order is delivered in bucket elevator from various raw material feed bins, is sent to meausring apparatus again then to detect its combined weight, to mixed
It closes the recycling cullet for adulterating 10~30wt% in material or production line is later expected, stir into batch, the batch being stirred is logical
It crosses conveyer belt and is sent to the storage of melting furnaces feed bin from batch house, the rate that batch enters melting furnaces is then controlled by charger.
(II) melt: batch after mixing is sent into melting unit, and melting unit is melting furnaces, and melting furnaces mainly include
Melting tank/clarifying basin, work pool, regenerative chamber and port, outline border have steel construction.Batch is sent in melting tank by charger, is melted
Change pond and be heated to 1650 DEG C through natural gas spraying gun, the glass metal of melting flows to card neck region from the clarified pond of melting tank, and stirring is equal
Work pool is flowed into after even, Slow cooling is down to about 1100 DEG C, it is made to reach reasonable viscosity range before reaching forming tank.
(III) molding and plated film: glass metal is gushed out from melting furnaces by flow passage area, controls its stream by the adjustable gate of flashboard
Amount, flashboard are deep into glass metal ± 0.15mm.After glass metal enters forming tank, tin liquor surface can be swum in, in glass metal itself weight
The exhibition of shakeouing under the action of power and surface tension is thin, and the edge machine on forming tank both sides pulls glass metal, and operator passes through control journey
For the forward speed of sequence setting edge machine to control the thickness of glass tape, the thickness of glass tape can be any between 0.55~25mm
Adjustment.As glass metal continuously flows through tin liquor, the temperature of glass metal is gradually reduced, curing molding.
(IV) it anneals: molding glass tape being sent by annealing kiln by lehr roller, includes automatically controlled heating in annealing kiln
Element and blower make the temperature gradient of glass tape by controlling heat to keep the distribution of glass tape transverse temperature continual and steady
Decline, is finally down to environment temperature, to eliminate harmful internal stress in glass.
It is to be understood that above-mentioned specific float glass melting technology route is not belonging to disclosure of the invention range and guarantor
Range is protected, only as a kind of exemplary description for helping those skilled in the art to more fully understand technical solution of the present invention, therefore
Above-mentioned process route and procedure parameter do not generate substantive restriction effect to the present invention.
Numberical range of the present invention not only includes enumerated point value, further includes the above-mentioned numerical value not included
Arbitrary point value between range, as space is limited and for concise consideration, range described in the present invention no longer exclusive list includes
Specific point value.
The system refers to device systems, apparatus system or process units.
Compared with prior art, the invention has the benefit that
The present invention, which makes protective gas directly act on tin liquor surface by the way that anti-ease device is arranged above tin liquor, prevents tin
Liquid oxidation effectively prevents protective gas evolution, improves the service efficiency of protective gas.Meanwhile improved procedure of the invention
To existing forming tank without significantly being adjusted, the improving cost and investment cost of equipment have been saved.
Detailed description of the invention
Fig. 1 is the section structure diagram for the float glass forming arrangement that a specific embodiment of the invention provides；
Fig. 2 is the overlooking structure diagram for the float glass forming arrangement that a specific embodiment of the invention provides；
Wherein, 1- glass metal；2- forming tank；The anti-ease device of 3-；4- delivery pipe；5- traction device；6- protective gas import；
7- bus-bar room；8- heating device；9- tin liquor；10- tin liquor import.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
It is to be appreciated that the orientation or position of the instructions such as term " import ", " outlet ", "top", "bottom", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitation of the present invention.
It should be noted that unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " should be done extensively
Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected, or be integrally connected；It can be mechanical connection,
It can be electrical connection；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary
It is logical.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood by concrete condition
Meaning.
In a specific embodiment, the present invention provides it is a kind of improve protective gas utilization efficiency float glass at
Type device, the float glass forming arrangement is as depicted in figs. 1 and 2, including forming tank 2, pours into tin liquor in 2 cavity of forming tank
9, at least one anti-ease device 3 is set above tin liquor 9, the protection gas for preventing the tin liquor 9 from aoxidizing is passed through in anti-ease device 3
Body.
It is provided with the bus-bar room 7 for installing heating cable at the top of forming tank 2, is provided with protective gas at the top of bus-bar room 7
Import 6 and tin liquor import 10 are filled with protective gas in bus-bar room 7, and protective gas, such as can optionally with week reduction gas
To be the mixed gas of nitrogen and hydrogen.
Tin liquor 9 is poured into forming tank 2, floating has the glass metal 1 for flowing into forming tank 2 above tin liquor 9.
1 flow direction of glass metal is provided at least one anti-ease device 3 for preventing protective gas from escaping, anti-ease device 3
It is vacantly set to 9 top (as shown in Figure 1) of tin liquor for not floating glass metal 1, is passed through in anti-ease device 3 for preventing tin liquor 9
The protective gas of oxidation, protective gas may be implemented to come into full contact with the direct of tin liquor 9 under the action of anti-ease device 3, thus
More effectively play the effect for preventing tin liquor 9 from aoxidizing.Illustratively, the present invention provides a kind of specific anti-ease device 3, institutes
The anti-ease box that anti-ease device 3 is one side opening is stated, is open towards 9 surface of tin liquor, the anti-external delivery pipe 4 of ease box, 4 one side of delivery pipe
Face supports anti-ease box for fixed, so that anti-ease box is able to vacantly be set to 9 top of tin liquor for not floating glass metal 1, it is another
Aspect is passed through protective gas into anti-ease box by delivery pipe 4, and protective gas is able to straight with tin liquor 9 under the blocking of anti-ease box
Contact, to effectively play the effect for preventing tin liquor 9 from aoxidizing, it is expressly noted that the flying height of anti-ease box is unsuitable excessively high,
It is close to 9 surface of tin liquor as far as possible, but it is ensured that is not contacted with tin liquor 9.
Be additionally provided with gas piping inside forming tank 2, the input end of gas piping is connected to bus-bar room 7, outlet end pass through at
Gap between the top cover brick of type groove 2 enters the inside of forming tank 2, the protective gas being filled in bus-bar room 7 by gas piping into
Enter forming tank 2 and 9 surface of blow-through tin liquor.
Heating device 8 is additionally provided with inside forming tank 2, specifically, heating device 8 is located at the top of the cavity of forming tank 2, adds
Thermal 8 uses electrical heating elements, and optional electrical heating elements include three-phase Elema or Kanthal wire.
The float glass forming arrangement further includes traction device 5, and the traction device 5 is for pulling glass metal 1 simultaneously
Ribbon thickness after molding is controlled, the traction device 5 is edge machine.
In another embodiment, the present invention also provides a kind of float shaping method, the float glass process
Glass forming method carries out in above-mentioned float glass forming arrangement.Specifically, the float shaping method includes such as
Lower step:
(I) tin liquor 9 that temperature is 700~900 DEG C is poured into forming tank 2, is passed through in anti-ease device 3 for preventing tin liquor 9
The protective gas of oxidation, protective gas import 6 are passed through protective gas (mixed gas of nitrogen and hydrogen), and protective gas is in bus
For cooling down the heating cable installed in bus-bar room 7 and realizing gas mixing in room 7, protective gas is successively gentle through bus-bar room 7
Body pipeline enters forming tank 2, directly contacts with 9 surface of tin liquor, prevents tin liquor 9 from aoxidizing；
(II) 9 surface of tin liquor is swum in after melting to 800~1200 DEG C of the inflow forming tank 2 of glass metal 1, glass metal 1 exists
The exhibition of shakeouing of 9 surface of tin liquor is thin, and traction device 5 pulls opening extreme direction (bore of the glass metal 1 to forming tank 2 in 2 two sides of forming tank
Be open end at tightening) it is mobile, operator by the speed control thickness of glass of control traction device 5, be cooled to 500~
Molding is sent from forming tank 2 after 700 DEG C.
In another embodiment, the present invention provides a kind of float glasses, and system, the float glass process glass is melted
Glass be melted system according to float glass process route include sequentially connected dosing, melting unit, forming unit and
Annealing unit, wherein the forming unit includes above-mentioned float glass forming arrangement.
Embodiment 1
Present embodiments provide a kind of float glass forming arrangement, the float glass forming arrangement such as Fig. 1 and Fig. 2 institute
Show including forming tank 2, the bus-bar room 7 for installing heating cable is provided at the top of forming tank 2, is provided with two at the top of bus-bar room 7
A protective gas import 6 (left side is nitrogen inlet, and right side is hydrogen inlet) and a tin liquor import 10 are filled in bus-bar room 7
The mixed gas of hydrogen and nitrogen is as protective gas；Tin liquor 9 is poured into forming tank 2, floating has inflow forming tank above tin liquor 9
2 glass metal 1.
Completely floating have the anti-ease box of setting 10 above the tin liquor 9 of glass metal 1 (the specific installation position of anti-ease box referring to
Fig. 1,9 exposed region of tin liquor positioned at 1 two sides of glass metal, every side include 5 anti-ease boxes of single setting), anti-ease box one side
Opening, opening support anti-ease box for fixed towards 9 surface of tin liquor, the anti-external delivery pipe 4 of ease box, 4 one side of delivery pipe, so that
Anti- ease box is able to vacantly be set to 9 top (as shown in Figure 1) of tin liquor for not floating glass metal 1；On the other hand, pass through delivery pipe
4 are passed through protective gas into anti-ease box, and protective gas is able to directly contact with tin liquor 9 under the blocking of anti-ease box, thus effectively
Play the effect for preventing tin liquor 9 from aoxidizing.
Forming tank 2 is internally provided with gas piping, and the input end of gas piping is connected to bus-bar room 7, and outlet end passes through molding
Gap between the top cover brick of slot 2 enters forming tank 2, and the protective gas being filled in bus-bar room 7 enters forming tank 2 by gas piping
And 9 surface of blow-through tin liquor.
Three-phase Elema electrical heating elements 9 are additionally provided at the top surface inner wall of forming tank 2.
The float glass forming arrangement further includes the edge machine positioned at 2 two sides of forming tank, edge machine one end and glass
Band is fixed, and pull glass tape is moved out tin liquor 9 to 2 open end of forming tank and controls ribbon thickness.
Embodiment 2
A kind of float shaping method is present embodiments provided, the float glass forming arrangement provided using embodiment 1
Curing molding is carried out to glass metal 1, specifically, the float shaping method includes the following steps:
(I) tin liquor 9 that temperature is 700 DEG C is poured into forming tank 2, is passed through into anti-ease box for preventing tin liquor 9 from aoxidizing
Protective gas is passed through the gaseous mixture of nitrogen and hydrogen as protective gas, the volume ratio of nitrogen and hydrogen to protective gas import 6
For 90:10, protective gas successively imports forming tank 2 through gas piping and bus-bar room 7, directly contacts with 9 surface of tin liquor, prevent tin
Liquid 9 aoxidizes；
(II) 9 surface of tin liquor is swum in after melting to 800 DEG C of the inflow forming tank 2 of glass metal 1, glass metal 1 is in 9 table of tin liquor
The face exhibition of shakeouing is thin, and edge machine pulls glass metal 1 to the movement of 2 opening direction of forming tank in 2 two sides of forming tank, and operator passes through control
The movement speed of edge machine processed is to control thickness of glass, and molding is sent from forming tank 2 after glass tape is cooled to 500 DEG C.
Embodiment 3
A kind of float shaping method is present embodiments provided, the float glass forming arrangement provided using embodiment 1
Curing molding is carried out to glass metal 1, specifically, the float shaping method includes the following steps:
(I) tin liquor 9 that temperature is 900 DEG C is poured into forming tank 2, is passed through into anti-ease box for preventing tin liquor 9 from aoxidizing
Protective gas is passed through the gaseous mixture of nitrogen and hydrogen as protective gas, the volume ratio of nitrogen and hydrogen to protective gas import 6
For 97:3, protective gas imports forming tank 2 through gas piping and bus-bar room 7, directly contacts with 9 surface of tin liquor, prevent 9 oxygen of tin liquor
Change；
(II) 9 surface of tin liquor is swum in after melting to 1200 DEG C of the inflow forming tank 2 of glass metal 1, glass metal 1 is in tin liquor 9
The surface exhibition of shakeouing is thin, and edge machine pulls glass metal 1 to the movement of 2 opening direction of forming tank in 2 two sides of forming tank, and operator passes through
The movement speed of edge machine is controlled to control thickness of glass, molding is sent from forming tank 2 after glass tape is cooled to 700 DEG C.
The Applicant declares that the foregoing is merely a specific embodiment of the invention, but protection scope of the present invention not office
It is limited to this, it should be clear to those skilled in the art, any to belong to those skilled in the art and take off in the present invention
In the technical scope of dew, any changes or substitutions that can be easily thought of, and all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. it is a kind of improve protective gas utilization efficiency float glass forming arrangement, which is characterized in that the float glass at
Type device includes forming tank, and tin liquor is poured into the molding slot cavity body, at least one anti-ease dress of setting above the tin liquor
It sets, the protective gas for preventing the tin liquor oxidation is passed through in the anti-ease device.
2. float glass forming arrangement according to claim 1, which is characterized in that setting is useful at the top of the forming tank
In the bus-bar room of installation heating cable；
Preferably, protective gas import is provided at the top of the bus-bar room；
Preferably, protective gas is filled in the bus-bar room；
Preferably, the protective gas is reducibility gas；
Preferably, the protective gas is the mixed gas of nitrogen and hydrogen；
Preferably, tin liquor is poured into the forming tank, floating has the glass metal for flowing into forming tank above tin liquor.
3. float glass forming arrangement according to claim 1 or 2, which is characterized in that be arranged along melt flow direction
The anti-ease device for having at least one to prevent protective gas from escaping, the anti-ease device, which is vacantly set to, does not float glass metal
Above tin liquor；
Preferably, the protective gas for preventing tin liquor from aoxidizing is passed through in the anti-ease device, protective gas is in anti-ease device
Under the action of directly contacted with tin liquor.
4. float glass forming arrangement according to claim 1-3, which is characterized in that the anti-ease device is
The anti-ease box being open on one side, the anti-ease box are open towards tin liquor surface；
Preferably, the anti-external delivery pipe of ease box, the delivery pipe are led to for the anti-ease box of fixed support and into anti-ease box
Enter protective gas；
Preferably, the anti-ease box is vacantly set to above the tin liquor for not floating glass metal；
Preferably, anti-ease box opening is close to not float the tin liquor surface of glass metal and not contacted with tin liquor.
5. float glass forming arrangement according to claim 1-4, which is characterized in that inside the forming tank
It is provided with gas piping, the input end of the gas piping is located at bus-bar room, and the outlet end of the gas piping passes through forming tank
Top cover brick between gap enter forming tank；
Preferably, heating device is additionally provided at the top of the forming tank；
Preferably, the heating device is electrical heating elements.
6. float glass forming arrangement according to claim 1-5, which is characterized in that the float glass at
Type device further includes traction device, and the traction device is for pulling glass metal and controlling thickness of glass after molding；
Preferably, the traction device is edge machine.
7. a kind of float shaping method, which is characterized in that the float shaping method is any in claim 1-6
It is carried out in float glass forming arrangement described in；
The float shaping method specifically includes:
Tin liquor is poured into forming tank, and the protective gas for preventing tin liquor from aoxidizing, the glass metal of melting are passed through into anti-ease device
Tin liquor surface is swum in after flowing into forming tank and the exhibition of shakeouing under the action of gravity and surface tension is thin, is sent from into after cooling and shaping
Type groove.
8. float shaping method according to claim 7, which is characterized in that the float shaping method is also
Include:
(I) after pouring into tin liquor in forming tank, it is passed through protective gas to protective gas import, protective gas enters gas through bus-bar room
Pipeline is passed through forming tank by gas piping, directly contacts with tin liquor surface, prevents tin liquor from aoxidizing；
(II) for glass metal during the exhibition of shakeouing of tin liquor surface is thin, traction device pulls glass metal to molding in forming tank two sides
Channel opening direction is mobile.
9. float shaping method according to claim 7 or 8, which is characterized in that the temperature of the tin liquor be 700~
900℃；
Preferably, the temperature of the glass metal is 800~1200 DEG C；
Preferably, molding is sent from forming tank after glass metal is cooled to 500~700 DEG C；
Preferably, the protective gas is the mixed gas of nitrogen and hydrogen；
Preferably, the volume ratio of nitrogen and hydrogen is (90~97): (10~3) in the protective gas.
10. system is melted in a kind of float glass, which is characterized in that system is melted according to float glass in the float glass
Process route includes sequentially connected dosing, melting unit, forming unit and annealing unit；
The forming unit includes float glass forming arrangement described in any one of claims 1-6.
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| CN201910702280.3A CN110255868B (en) | 2019-07-31 | 2019-07-31 | Float glass forming device and forming method for improving utilization efficiency of shielding gas |
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| CN201910702280.3A CN110255868B (en) | 2019-07-31 | 2019-07-31 | Float glass forming device and forming method for improving utilization efficiency of shielding gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114349316A (en) * | 2021-12-20 | 2022-04-15 | 蚌埠中光电科技有限公司 | Float electronic glass protective gas implementation device and operation method thereof |
| CN114349315A (en) * | 2021-12-17 | 2022-04-15 | 蚌埠中光电科技有限公司 | Method and device for protecting molten tin in float glass tin bath |
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| CN114349316A (en) * | 2021-12-20 | 2022-04-15 | 蚌埠中光电科技有限公司 | Float electronic glass protective gas implementation device and operation method thereof |
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| Publication number | Publication date |
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| CN110255868B (en) | 2024-04-02 |
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