CN104649568A - Equipment For Producing Float Plate Glass - Google Patents
Equipment For Producing Float Plate Glass Download PDFInfo
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- CN104649568A CN104649568A CN201410669613.4A CN201410669613A CN104649568A CN 104649568 A CN104649568 A CN 104649568A CN 201410669613 A CN201410669613 A CN 201410669613A CN 104649568 A CN104649568 A CN 104649568A
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- Prior art keywords
- floor
- bath
- glass
- reticulation
- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The present invention provides an equipment for producing a float plate glass. The equipment for producing the float plate glass is characterized by comprising a fusing groove arranged adjacent to an opening part arranged on the upper-layer floor of a building; a bath groove for shaping the fused glass float into a glass belt; a main pipeline arranged in the lower layer of the building, and possessing a plurality of injection pipes opposite to the bottom of the bath groove; a master air blower; a clathrate floor arranged at the lower side of the bath groove and forming an intermediate layer; a supply pipe penetrating the clathrate floor along the upper and down directions, extending to the bottom of the bath groove, and possessing the injection pipes at the top end side; a plurality of slave air blowers arranged on the clathrate floor, and conveying the air surrounding the supply pipe to the lower layer side below the fusing groove via the clathrate floor. The equipment for producing the float plate glass is equipped with an exhaust stream path which conveys the air conveyed to the lower layer side below the fusing groove to the upper layer via the opening part and then exhausts the air to the exterior of a room.
Description
Technical field
The present invention relates to a kind of structure device utilizing float glass process to manufacture sheet glass being located at the producing apparatus of buildings.
Background technology
When utilizing float glass process to manufacture sheet glass, usually manufacture by the method for following explanation.Frit is put in melting channel and carry out heating and making this frit melting, thus obtain melten glass.Then, the melten glass utilizing melting channel to obtain is supplied to continuously on the surface of the molten metals such as the molten tin that is contained in bath.
Utilize top roll widened into Rack from this melten glass of two side stretchings of this melten glass and be adjusted to specific thickness making to be supplied to while the melten glass on molten metal flows along the surface of molten metal to prescribed direction, float forming is the glass ribbon of band plate-like thus.Pull out from the export department of bath the glass ribbon that has been shaped and make it keep, zonally in annealing furnace annealing, cutting after cleaning this glass ribbon, thus the sheet glass of target thickness, target sizes can being obtained.
Should be higher by the productivity of the manufacture method of float forming manufacture sheet glass, and the flatness of the sheet glass obtained is excellent.Thus, the sheet glass formed by float forming is widely used in panel for construction glass, automobile sheet glass, FPD (flat-panel monitor) use sheet glass.
Bath for float glass process is made up of the metallic casing of polylith refractory brick with the outside surface covering refractory brick, polylith refractory brick is assembled into grooved across puzzle joint and forms bath, accommodating the molten metals such as molten tin in the inside of this bath.At this, the refractory brick forming the furnace bottom of bath is also referred to as end brick, and the shell made of iron covering the outside surface of this end brick is referred to as drain pan.
When bath is described structure, if molten metal arrives drain pan via the puzzle joint of end brick, then drain pan may deform or be destroyed, and therefore needs to avoid this situation occurs.Such as, the technology by cooling drain pan to the outside surface blow air of drain pan there will be a known as described in following patent documentation 1.Made the molten metal solidification of the puzzle joint entered near drain pan by cooling drain pan, prevent molten metal from arriving drain pan thus, prevent drain pan from deforming, destroy.Such as, when molten metal is molten tin, as long as drain pan to be cooled to the temperature of the fusing point (231.9 DEG C) lower than tin.
In the structure described in patent documentation 1, in order to make the temperature distribution homogenization of drain pan, be configured with multiple temperature measuring equipment in drain pan bottom surface, and be provided with the air supply pipe of the multiple positions opening in drain pan bottom surface.Utilize this structure, from multiple opening blow air of supply-pipe, drain pan is cooled respectively, and control the air capacity that blows out from each opening according to the measuring tempeature bottom drain pan, thus make the temperature distribution homogenization of drain pan.
prior art document
patent documentation
Patent documentation 1: No. 2012/060197th, International Publication
Summary of the invention
the problem that invention will solve
In the technology described in patent documentation 1, trip temperature of going forward side by side from the bottom that multiple opening blow out air cools drain pan controls, but after blowing to the bottom of drain pan by the space of warmed-up air residual below bath.
If cooling drain pan and to guarantee that needed for the opening ejection of supply-pipe maximum quantity of wind is with day and night, control within the scope of constant temp by drain pan to season, then to there is the problem in installation space that hot gas remains in below bath.In addition, for being arranged at the floor below bath to the gas blower of supply-pipe conveying air, therefore when hot gas remains in the installation space below bath, there is such problem: again to be sucked by gas blower to cool warm air that drain pan temporarily employs and again to carry to the bottom side of drain pan.If the hot gas be trapped in the space below bath is sucked again by gas blower and bottom to drain pan is carried, then the problem that the cooling efficiency that there is drain pan reduces.
The present invention makes to solve problem described above, its object is to provide a kind of producing apparatus of such float flat glass: effectively discharge the hot gas after to air cooling bottom bath, even if the air quantity increase of cooling thus also can prevent hot gas to be detained, thus can improve the cooling efficiency bottom bath.
for the scheme of dealing with problems
(1) feature of the producing apparatus of float flat glass of the present invention is, comprise: melting channel, it manufactures melten glass for making frit melt, this melting channel is arranged at the floor on the upper strata of buildings in the mode adjacent with opening portion, and the floor on described upper strata is located in the mode being communicated with levels in this opening portion; Bath, it is supplied to the molten metal of described melten glass on receiving surface, and for being glass ribbon by described melten glass float forming, this bath is arranged on interconnecting part, and this interconnecting part is located at the floor on described upper strata in the mode being communicated with levels; Main pipeline, it is located at the lower floor of described buildings, is connected with the spray tube that many roots and tops portion is relative with the bottom of the bath on described upper strata; Main blower, it is connected with described main pipeline; Reticulation floor (Japanese: グ レ ー チ Application グ bed), it is arranged on the lower side of described bath, between described upper strata and described lower floor, form middle layer; Supply-pipe, it is connected to described main pipeline in the mode on through along the vertical direction described reticulation floor, has towards the described spray tube bottom the bath on described upper strata in its tip side; And multiple secondary gas blower, it is arranged on described reticulation floor, for the air above described reticulation floor is carried via the lower layer side of described reticulation floor to the lower position of described melting channel, the producing apparatus of this float flat glass have make the air utilizing described secondary gas blower to be transported to the lower layer side of the lower position of described melting channel be transported to upper strata via described opening portion after be discharged to outdoor exhaust flow path.
(2) in the present invention, such structure can be adopted: described reticulation floor is formed in the lower side of described melting channel along described bath, the circulation flow path be divided into by the floor of the sidewall of described lower floor, described lower floor and described reticulation floor area is formed in the width both sides on described reticulation floor, the air blast direction of described secondary gas blower is with the below towards described reticulation floor or in the horizontal direction towards the direction of described circulation flow path, and is the direction of the lower position side along described circulation flow path towards described melting channel.(3) in the present invention, can adopt such structure: be formed with venting port at the top of described buildings, the venting port of lower air from described top being discharged to upper strata from described opening portion is discharged.(4) in the present invention, can adopt such structure: on the floor of described lower floor, be provided with auxiliary blower near described main pipeline, this auxiliary blower send the air near described main pipeline along the circulation flow path of described lower floor to the lower position side-blown of described melting channel.(5) in the present invention, such structure can be adopted, near described main blower, be formed with the suction port of buildings extraneous air.(6) in the present invention, can adopt such structure: the floor on described upper strata comprises steel frame beam tectosome and floor panel, described interconnecting part is local by dispensing described floor panel and steel frame beam tectosome is exposed.
(7) in the present invention, the preferred described glass ribbon of cutting and the sheet glass that obtains is represent the non-alkali glass with following composition with the mass percent of oxide compound benchmark.
SiO
2：50％～73％，Al
2O
3：10.5％～24％，B
2O
3：0～12％，MgO：0～10％，CaO：0～14.5％，SrO：0～24％，BaO：0～13.5％，MgO+CaO+SrO+BaO：8％～29.5％，ZrO
2：0～5％。(8) in the present invention, the preferred described glass ribbon of cutting and the sheet glass that obtains is represent the non-alkali glass with following composition with the mass percent of oxide compound benchmark.
SiO
2：58％～66％，Al
2O
3：15％～22％，B
2O
3：5％～12％，MgO：0～8％，CaO：0～9％，SrO：3％～12.5％，BaO：0～2％，MgO+CaO+SrO+BaO：9％～18％。(9) in the present invention, the preferred described glass ribbon of cutting and the sheet glass that obtains is represent the non-alkali glass with following composition with the mass percent of oxide compound benchmark.
SiO
2：54％～73％，Al
2O
3：10.5％～22.5％，B
2O
3：0～5.5％，MgO：0～10％，CaO：0～9％，SrO：0～16％，BaO：0～2.5％，MgO+CaO+SrO+BaO：8％～26％。
the effect of invention
Adopt the present invention, can utilize secondary gas blower that self-injection pipe is sprayed bottom bath and hot gas cooled bottom bath is discharged to the lower layer space than side on the lower, reticulation floor through reticulation floor, make this hot gas discharge to upper strata along the opening portion of exhaust pathway from the floor on upper strata afterwards, and then be discharged to outdoor from roof portion.Therefore, the underlying space bottom bath can not be full of hot gas.
Thus, the cooling efficiency bottom bath is made to improve.Therefore, though when in order to day and night, season by when controlling bottom bath to guarantee required maximum quantity of wind to cool within the scope of constant temp, the cooling efficiency bottom bath also can not reduce.
Accompanying drawing explanation
(A) of Fig. 1 and (B) of Fig. 1 represents the example structure comprising the buildings of the producing apparatus of float flat glass of the present invention, (A) of Fig. 1 is (B) of one-piece construction figure, Fig. 1 is the vertical view representing the melting channel on buildings upper strata and the configuration relation of bath.
Fig. 2 is the schematic top view figure of an example of the position relationship represented when bath of the present invention, main blower and main pipeline being arranged in buildings.
Fig. 3 is that sketch chart is cutd open in the side of an example of the position relationship represented when bath of the present invention, reticulation floor and main pipeline being arranged in buildings.
Fig. 4 is the cross-sectional sketch chart of an example of the position relationship representing bath of the present invention, main blower, supply-pipe, spray tube.
Fig. 5 is along the A in Fig. 4
1-A
2the sectional view of line.
Fig. 6 is the approximate vertical view of another example of the position relationship representing bath of the present invention, main pipeline, spray tube and secondary gas blower.
Embodiment
Below, limit is with reference to accompanying drawing limit application embodiments of the present invention.
(A) of Fig. 1 represents and to be provided with melting channel 1, bath 2, annealing furnace 3 on upper strata 5, to be provided with main pipeline 7, main blower 8 in lower floor 6, between upper strata 5 and lower floor 6, to be provided with the side profile construction of the buildings 11 in middle layer 10, be provided with reticulation floor 9 in this middle layer 10.
As an example of this buildings 11, adopt two floor structures, by the floor 12 and erectting of Stall be arranged at sidewall 13 around this floor around and form the Stall of buildings 11, by the floor 15 and erectting of second floor be arranged at sidewall 16 around this floor around and form the second floor of buildings, roof portion 17 is constructed, being partially formed for the venting port 17A to the air in sheaf space in the discharge of outdoor in this roof portion 17 on the sidewall 16 of second floor.
Venting port 17A can be assembled in the local of roof structure as scavenge port inside eaves etc., also can be the opening of window, and, also can the gas barrier be used for the air in the space in discharge roof portion, outdoor 17 and the air in upper strata 5 be set in the inner side of venting port 17A.
Wherein, in the present embodiment, buildings 11 is described as two floor structures, as long as but buildings 11 is the structure comprising upper strata 5 and lower floor 6, then can be random layer number.Such as, also the structure that upper strata 5 is Stall, lower floor 6 is subterranean layer can be configured to, can also using any one deck of the buildings of more than 3 layers as upper strata 5 and using the layer under this upper strata 5 as lower floor 6.
In the buildings 11 of present embodiment, for the floor 12 of Stall, can exemplify by erect be arranged at post, beam etc. on the ground of buildings 11 around floor that the general reinforced-concrete construction of Steel Concrete keel etc. is set, interval or the steel frame beam tectosome that forms at assembling reinforcing bar on the floor of reinforcement constitution of installing floor board plate.In addition, the deck construction of buildings 11 is not particularly limited, and except the structure of this example, also can apply the floor of the arbitrary structure be made up of general deck construction material.Such as, also can be that the floor 12 of Stall is held concurrently as the structure of the ground of buildings.
In the buildings 11 of present embodiment, as an example of the floor 15 of second floor, adopt reinforcement constitution, be made up of such as lower part, that is: the floor panel of the local of the steel frame beam tectosome steel such as H-shaped steel, I shape steel formed along direction assembling in length and breadth and the upper surface side that covers this tectosome.
As shown in the side section of (A) of Fig. 1, on the floor 15 of second floor, be configured with melting channel 1, connection section 18, bath 2, annealing furnace 3 in a neighboring manner successively to the left, along the length direction of buildings 11 from the right side of buildings 11.Therefore, the aftermentioned melten glass utilizing melting channel 1 to generate is transported to bath 2 by the melting channel 1 of (A) from Fig. 1 via connection section 18, and on the molten metal being contained in bath 2 inside, widened into Rack, specific thickness and be configured as glass ribbon, afterwards, be transported to annealing furnace 3 by the export department from bath 2 and cool.Therefore, when being described along the flow direction of melten glass, side, most upstream being provided with melting channel 1, being configured with connection section 18, bath 2 and annealing furnace 3 in a neighboring manner successively along with going towards downstream side from melting channel 1.
In the floor 15 of second floor, eliminate the floor panel in region being provided with melting channel 1, connection section 18, bath 2, melting channel 1, connection section 18, bath 2 are arranged on the steel frame beam tectosome 19 that formed along direction assembling in length and breadth by steel.
Thus, in the region being provided with melting channel 1, connection section 18, bath 2 of floor 15, levels is communicated with by the interconnecting part 19a be formed between steel frame beam tectosome 19, and operating personnel can contact the respective bottom side of melting channel 1, connection section 18, bath 2 from lower floor 6 side joint.That is, operating personnel can carry out remedial operation from lower floor 6 side via the respective bottom side of steel frame beam tectosome 19 pairs of melting channels 1 of floor 15, connection section 18, bath 2.
In addition, eliminate diagram in the accompanying drawings, but be equipped with the pipe arrangement of the cooling apparatuss such as many water pipes in the bottom of melting channel 1, therefore, it is possible to configure a part for these pipe arrangements via the interconnecting part 19a in the gap of the steel frame beam tectosome 19 below melting channel 1.
In addition, the part except being provided with the region of melting channel 1, connection section 18, bath 2 of the floor 15 on upper strata 5 is the floors of the ordinary construction being equipped with floor panel on steel frame beam tectosome 19, therefore in (A) of Fig. 1, eliminate the diagram of steel frame beam tectosome 19 and floor panel, schematic diagram is the floor of a structure.
As shown in (B) of Fig. 1, in the floor 15 of second floor, be formed with in width (direction orthogonal with the flow direction of the melten glass) left and right sides of melting channel 1 opening portion 14 that lower floor 6 is communicated with upper strata 5, the air be positioned at immediately below melting channel in lower floor 6 can move to side, upper strata 5 via opening portion 14.
Opening portion 14 only can be located at the side of melting channel 1, if but be provided with opening portion 14 in both sides, then not easily there is the left and right temperature difference, therefore preferably.
In the buildings 11 of present embodiment, the floor 12 of Stall and the floor 15 of second floor are all rectangle when overlooking as shown in (B) of Fig. 1, and melting channel 1, connection section 18, bath 2 configure along the length direction of buildings 11.Therefore, the flow direction of melten glass and the length direction of buildings are same direction, and the width of the width of buildings 11 and melting channel 1, connection section 18, bath 2 is same direction, is described following with this.
In the floor 15 of described second floor, be provided with smelting furnace 1, connection section 18, bath 2 the below in region be formed with reticulation floor 9.Reticulation floor 9 be combination multiple checker, mesh etc. are installed on frame material lattice member and the floor that forms, the wind of aftermentioned secondary gas blower is easily by reticulation floor 9.
Also as shown in Figure 3, reticulation floor 9 has the width of part degree of the width of buildings 11, and is formed as having width and the length of the lower zone that can cover the region being provided with melting channel 1, connection section 18 and bath 2.
Reticulation floor 9 is formed between upper strata 5 and lower floor 6, and accounts for a part for the upper side of lower floor 6, with guarantee operating personnel keep in repair smelting furnace 1, connection section 18, bath 2 respective bottom time working space.Reticulation floor 9 is formed as the intermediate altitude between the floor 12 of Stall and the floor 15 of second floor.
Reticulation floor 9 is suspension type in the structure shown in (A) of Fig. 1, but also can be the structure of the floor 12 being supported on Stall by support, post etc.
The refrigerating unit 20 of the bottom for cooling bath 2 is configured with in the position be positioned at below described bath 2 of lower floor 6.
About the structure of the structure of refrigerating unit 20 and the bath 2 of side disposed thereon and an example of position relationship between the two, be described following based on Fig. 4, Fig. 5.
As shown in Figure 4, Figure 5, bath 2 comprises the shell 27 of the outside surface of polylith brick 26 and covering brick 26, in bath, accommodate the molten metals such as molten tin 28.At this, in the present embodiment, the brick of the furnace bottom forming bath 2 is called end brick 26A, the shell of the outside surface covering this end brick 26A is called drain pan 27A.
As long as the material that the material of brick 26 is lower with the reactivity of molten metal 28 or do not have reactive material with molten metal 28 and be the material with high thermal resistance, alumina, sillmanite (sillimanite), clayey etc. can be exemplified.
The constituent material of drain pan 27A is not particularly limited, such as, formed by the thermotolerance such as iron or stainless steel metallic substance.
As shown in Figure 4, refrigerating unit 20 is extended by main blower 8, temperature measuring equipment 33, temperature indicating device 34, control device 35, main pipeline 7, main conduit 7 supply-pipe 22, arm 23, spray tube 25 are formed.
In the region be positioned at immediately below described bath 2 of lower floor 6, at the lower position of the width central part of bath 2, the length direction of bath 2 is provided with main pipeline 7, this main pipeline 7 extends to the position of the lower position near annealing furnace 3 along the lower floor 6 of buildings 11.
As shown in Figure 2, the extension side of main pipeline 7 branches out the two take-off pipe 7A in left and right, is connected to main blower 8 in the extension side of each take-off pipe 7A.By making these main blowers 8,8 work, the air near main blower 8,8 can be transported in main pipeline 7.The suction port 37 of buildings extraneous air and the window portion 38 of open and close type is formed at the sidewall 13 of the side being positioned at main blower 8.
Many supply-pipes 22 (be 5 piece at (A) of Fig. 1, the example of Fig. 4) are connected with off and in the midway part be arranged in immediately below described bath 2 of main pipeline 7.Supply-pipe 22 main conduit 7 erects upward, through reticulation floor 9 also extends further upward, this supply-pipe 22 extends along the width of bath 2 and branches out many arms 23 above reticulation floor 9, is integrally formed with multiple spray tube 25 in the upper side of each arm 23.
The top of described spray tube 25 is relative with the bottom surface of the drain pan 27A of bath 2.Thus, if the top of self-injection pipe 25 is sprayed be transported to the air of main pipeline 7, then can to the bottom surface blow air of drain pan 27A, thereby, it is possible to cooling drain pan 27A and the bottom of lower side, the i.e. bath 2 of end brick 26A that contacts with this drain pan 27A.Wherein, the branch direction of arm 23 can be the width of bath 2 as shown in Figure 5, also can along its length with width both sides branch.
The supply-pipe 22 of present embodiment, arm 23 and spray tube 25 are not limited to the form shown in Fig. 4, Fig. 5, supply-pipe 22 and arm 23 may not be branch within the scope of the whole length direction of bath 2, but in the region of the upstream side (near the side of melting channel 1, the right side in (A) of Fig. 1) of deflection bath 2 branch.The upstream side of bath 2 is regions that the temperature of the melten glass on molten metal is higher, if be present in the molten metal of the puzzle joint of end brick 26A and occur bubble, bring detrimentally affect then can to the quality of melten glass, therefore need the cooling of the bottom of the upstream side fully carrying out bath 2.Therefore, preferably employing is configured with the structure compared with manifold 23 at the upstream side of bath 2 as shown in Figure 4.
Position for the configuration of main pipeline 7, supply-pipe 22 and arm 23 is not limited to immediately below bath 2, extends as long as each pipe to be configured to adipping after being configured in the position of slightly departing from immediately below bath 2 and finally spray tube 25 can be configured in the target location of the bottom surface side of drain pan 27A.In addition, both can be provided with more than 3 main blowers 8 be connected with main pipeline 7, also can be provided with a main blower 8 be connected with main pipeline 7.
The bath 2 that Fig. 6 represents for specified shape limits the branches of supply-pipe 22 and arm 23 and arranges the structure example of spray tube 25 for bath 2 as far as possible equably.
In the structure example shown in Fig. 6, bath 2 is such structure: in the plan view shape of bath 2, the part of on the length direction from inlet portion 2a side about 2/3 is configured to wide portion 2A, and remaining about 1/3 is configured to narrow portion 2B, is provided with export department 2b at the end side of narrow portion 2B.
For the bath 2 of this shape, main pipeline 7 is provided with below its width central part, on the length direction of main pipeline 7, be formed with 6 supply-pipes 22 accordingly at predetermined intervals with wide portion 2A, and be formed with 3 supply-pipes 22 accordingly at predetermined intervals with narrow portion 2B.Further, the width from supply-pipe 22 along bath 2 branches out arm 23, in wide portion 2A, arm 23 is formed with 5 spray tubes 25, in narrow portion 2B, branches out 3 spray tubes 25 from arm 23.
Configuring supply-pipe 22, arm 23 and spray tube 25 is as shown in Figure 6 an example, and the configuration of certain supply-pipe 22, arm 23 and spray tube 25 is not limited to this example.
That is, if the bottom that can cool the width of bath 2 makes it be in constant temp scope, then the quantity being the arm 23 of fan shape branch along the width of bath 2 is not particularly limited.In addition, be also not particularly limited to this example along the interval between the interval between the supply-pipe 22 that main pipeline 7 configures and the arm 23 that configures along supply-pipe 22, both can be constant interval, also can be not fixed intervals.
In addition, in the structure shown in Fig. 4 and Fig. 5, between the outside surface (bottom surface) and the top of spray tube 25 of drain pan 27A, be formed with gap, if but the temperature of the outside surface of drain pan 27A can be controlled, then this gap can be arbitrary size.In addition, also can be, the outside surface of drain pan 27A and the tip contact of spray tube 25.
Temperature measuring equipment 33 is devices of the temperature of outside surface for measuring drain pan 27A, and the outside surface of drain pan 27A is provided with multiple temperature measuring equipment 33.Quantity and the configuration space of temperature measuring equipment 33 are not particularly limited.Such as, both can the main like that upstream side being arranged on bath 2 as shown in Figure 4, Figure 5, also can be configured in upstream side, side, middle reaches, downstream side along the length direction of bath 2.In addition, also multiple temperature measuring equipment 33 can be configured with along the width of bath 2 as shown in Figure 5.
Temperature indicating device 34 is devices of the temperature data of outside surface for showing the drain pan 27A measured by temperature measuring equipment 33.By being presented at by the temperature data measured on the picture of temperature indicating device 34, the operating personnels such as monitoring personnel can be made to grasp measured temperature data.
The temperature data of display represents the mean value of multiple temperature data and the plurality of temperature data measured by multiple temperature measuring equipments 33 of the outside surface being arranged at drain pan 27A or the temperature data to the effective position of this shortcoming of bubble that reduction occurs in glass ribbon.
Such as, when controlling inadequate to the temperature of drain pan 27A, the temperature of drain pan 27A rises, and occurs bubble in the molten metal sometimes.If this bubble enters melten glass side, then there is the problem causing glass quality to decline.Therefore, the temperature of carrying out drain pan 27A controls to be important.
Control device 35 is the devices for controlling to be supplied by main blower 8 air capacity come.Monitoring personnel controls the mode operating control device 35 in the scope expected according to the temperature data shown by temperature indicating device 34 with the amplitude of fluctuation of the temperature of the outside surface by drain pan 27A and manually operates blast volume.Temperature data as the benchmark for controlling air quantity both can be the mean value of the temperature data measured by multiple temperature measuring equipment 33, also can be the temperature data to controlling the effective position of bubble.Wherein, the amplitude of fluctuation illustrated by present embodiment refers to the difference of top temperature and minimum temperature.
Utilize control device 35 to control main blower 8 to be undertaken by the manual operation of monitoring personnel, but also can be utilize the program stored in the not shown storing device being located at control device in addition to carry out the structure automatically controlled.In this case, can be like this: not shown machine unit is set at control device 35, carries out by described program the blast volume that automatic decision adjusts main blower 8 according to the temperature data measured by temperature measuring equipment 33.
On described reticulation floor 9 and near the position of supply-pipe 22 extension, secondary gas blower 40 is respectively arranged with row in the mode being positioned at the left and right of supply-pipe 22 in the width left and right sides on reticulation floor 9, and the air blast direction of each secondary gas blower 40 is towards the oblique below outside the width on reticulation floor 9.In the example of (A) of Fig. 1, show at row (being 5 in the example shown in (A) of Fig. 1) the secondary gas blower 40 towards the side, front in the secondary gas blower 40 of two row on reticulation floor 9.Each secondary gas blower 40 shown in (A) of Fig. 1 is set to: air blast direction is towards the oblique below, right side of the lower floor 6 of the buildings 11 in (A) of Fig. 1.As an example of secondary gas blower 40, utilize gas blower that electric motor carries out the airblast blade rotated, that can carry for utilizing foot-supporting frame supporting motor part and comprising.In addition, the number that arranges of secondary gas blower 40 can be any, but in order to cover the major part in the region being provided with supply-pipe 22, arm 23 and spray tube 25, preferably arrange required number.
What Fig. 3 represented the secondary gas blower 40 that the cross section along buildings 11 and reticulation floor 9 is seen arranges state.When observing along the direction shown in Fig. 3, secondary gas blower 40 is set as: air blast direction from the width end on reticulation floor 9 towards sidewall 13 side of buildings and can oblique below air blast laterally.In addition, be formed in the left and right sides on the reticulation floor 9 of lower floor 6 by the circulation flow path 41 of floor 15 zoning on the floor 12 of the sidewall 13 of lower floor 6, reticulation floor 9, lower floor 6 and upper strata.This circulation flow path 41 is configured in the width both sides of width both sides, the i.e. main pipeline 7 on reticulation floor 9.
According to structure described above, secondary gas blower 40 makes air, i.e. supply-pipe 22 between reticulation floor 9 and bath 2, arm 23, spray tube 25 ambient air towards circulation flow path 41 geosyncline flowing underneath, moves to effluent immediately below the melting channel setting position of buildings 11.
In the circulation flow path 41 of Stall, on floor 12, be provided with auxiliary blower 42 near main blower 8, this auxiliary blower 42 is towards side immediately below the melting channel setting position of buildings 11, and air blast direction is the horizontal direction along circulation flow path 41.
Then, to use be located at buildings 11 as described above equipment, utilize float glass process to manufacture the method for sheet glass to be described.
Frit is dropped in melting channel 1, melten glass is manufactured in melting channel 1, afterwards, supply melten glass G via connection section 18 as illustrated in Figure 4 to the surface of the molten metal 28 in bath 2 and widened and become band, thus be configured as the glass ribbon GR of Rack, specific thickness.
The glass ribbon GR utilizing the pull-ups such as conveying roller to be shaped and make it move to annealing furnace 3 side from the export department of bath 2 and anneal, carries out in the operation afterwards below cleaning, cutting, can obtain the sheet glass of target sizes thus.
This sheet glass can apply the non-alkali glass shown in following composition example.
As the 1st example, can use and represent the non-alkali glass with following composition with the mass percent of oxide compound benchmark.
SiO
2：50％～73％，Al
2O
3：10.5％～24％，B
2O
3：0～12％，MgO：0～10％，CaO：0～14.5％，SrO：0～24％，BaO：0～13.5％，MgO+CaO+SrO+BaO：8％～29.5％，ZrO
2：0～5％。
As the 2nd example, can use and represent the non-alkali glass with following composition with the mass percent of oxide compound benchmark.
SiO
2：58％～66％，Al
2O
3：15％～22％，B
2O
3：5％～12％，MgO：0～8％，CaO：0～9％，SrO：3％～12.5％，BaO：0～2％，MgO+CaO+SrO+BaO：9％～18％。
As the 3rd example, can use and represent the non-alkali glass with following composition with the mass percent of oxide compound benchmark.
SiO
2：54％～73％，Al
2O
3：10.5％～22.5％，B
2O
3：0～5.5％，MgO：0～10％，CaO：0～9％，SrO：0～16％，BaO：0～2.5％，MgO+CaO+SrO+BaO：8％～26％。
As non-alkali glass, the sheet glass that utilizes float glass process to manufacture described in using, such as, if display unit glass, then can exemplify thickness be 0.7mm ~ 0.1mm, vertical wide be 2500mm, transverse width is the sheet glass of 2200mm etc.
When using bath 2, cooling is needed to be melted the drain pan 27A of metal 28 heating.The control of the temperature variation amplitude to drain pan 27A is below described.
Such as, when implementing the manufacture of float flat glass from morning to noon, when the temperature of the outside surface of drain pan 27A be also rising trend and amplitude of fluctuation not expect scope in, increase the blast volume from main blower 8.The air quantity blowed to the outside surface of drain pan 27A from each spray tube 25 via main pipeline 7, supply-pipe 22, arm 23 can be made to increase by increasing blast volume.
The air sprayed from each spray tube 25 blows, therefore, it is possible to cool the outside surface of drain pan 27A efficiently to the outside surface of drain pan 27A via the interconnecting part 19a of the steel frame beam tectosome 19 of second floor.
When implementing the manufacture of float flat glass from noon to evening, the temperature of the outside surface of drain pan 27A is the tendency that declines.When the temperature of the outside surface of drain pan 27A be decline tendency and amplitude of fluctuation not expect scope in, reduce the blast volume from main blower 8.
In described explanation, in during from morning to noon, increase blast volume, reduce blast volume in during from noon to evening, but the present invention is not limited thereto.Even at dead of night, when the amplitude of fluctuation of the temperature of the outside surface of drain pan 27A is not in the scope expected, also preferably by increasing or reduce the amplitude of fluctuation reducing temperature from the blast volume of main blower 8.For the amplitude of fluctuation of temperature, as an example, be preferably less than 4 DEG C, be more preferably less than 3 DEG C, be particularly preferably less than 2 DEG C.
In addition, in order to regulate the blast volume from main blower 8, preferably, the temperature of the bottom surface side of the drain pan 27A that use can utilize the main blower 8 of the type of Frequency Converter Control rotating speed, basis is measured by temperature measuring equipment 33 adjusts blast volume and self-injection pipe 25 carries out air blast.
The suction port 37 of buildings extraneous air is formed in the position of the close main blower 8 of the sidewall 13 of lower floor 6, therefore main blower 8 sucks extraneous air and is carried to main pipeline 7, and this air is cooled the bottom of bath 2 by blowing to the bottom of bath 2 from multiple spray tube 25 afterwards.
Main blower 8 is used cooled for the outside surface of drain pan 27A air to be become warm air and is stranded in the middle layer 10 immediately below bath 2 as described.Wherein, have the interconnecting part 19a of steel frame beam tectosome 19 in the outside surface side of drain pan 27A, therefore this part is also easily full of hot gas.In addition, be formed with many arms 23 and spray tube 25 in the below of bath 2, the space therefore around them is also easily full of hot gas.
In order to remove the hot gas that these are full of, in the equipment of present embodiment, the multiple secondary gas blower 40 be located on reticulation floor 9 is worked, and the air in middle layer 10, air in other words between bath 2 and reticulation floor 9 is passed out in the stream shown in arrow a in (A) of Fig. 1.Secondary gas blower 40 sucks and is trapped in than secondary gas blower 40 warm air by the top and it is oliquely downward sent respectively.
Wherein, in the example of (A) of Fig. 1, secondary gas blower 40 is illustrated as obliquely downward, but also can towards immediately below, can also be horizontal direction.Also can in addition connecting tube and midway change direction, be such as adjusted to: on the floor 12 of Stall along horizontal direction from downstream side towards upstream side.Warm air has the character of accumulating upward under the effect of buoyancy, therefore in order to make warm air be reduced to lower floor 6 from middle layer 10, needs the power that secondary gas blower 40 is such.
Therefore, it is possible to prevent bath 2 underlying space and around be full of hot gas.In addition, if hot gas is full of the larger scope in middle layer 10, then there is such problem: main blower 8 sucks this hot gas, warm air is transported to the drain pan 27A of bath 2 by main blower 8.
Make the action of secondary gas blower 40 as described, hot gas can be removed and shroud, therefore, it is possible to suppress main blower 8 to carry the temperature to the tempering air of drain pan 27A to rise, improve the cooling efficiency of bath 2.
Suppose, though when in order to day and night, season drain pan 27A is controlled to guarantee that needed for main blower 8, maximum quantity of wind cools in constant temp scope, also can not reduce the cooling efficiency of drain pan 27A by making secondary gas blower 40 work.
Described reticulation floor 9 forms middle layer 10, and therefore operating personnel can utilize the space between reticulation floor 9 and bath 2 to carry out bottom bath and the remedial operation etc. of remedial operation around, the remedial operation of spray tube 25, the remedial operation of temperature measuring equipment 33 and secondary gas blower 40.In addition, when using the superjacent air space on reticulation floor 9 because maintenance waits, if be full of hot gas in this space, then the environment of remedial operation also becomes the condition of high temperature, may environmental degradation be there is, but the temperature by using secondary gas blower 40 to reduce this region, can prevent operating environment from worsening.
The warm air sent along stream a of secondary gas blower 40 along lower floor circulation flow path 41 and along the flow path shown in arrow b, and arrive the region being positioned at melting channel lower side of lower floor 6, then, along the stream rising shown in arrow c, the opening portion 14 near melting channel.Warm air through opening portion 14 moves to upper strata 5, and arrives the venting port 17A in roof portion 17 along the flow path shown in arrow d on upper strata 5, afterwards from venting port 17A along the stream shown in arrow e to outdoor discharge.
Therefore, warm air can not be trapped in comprise lower floor 6 reticulation ground panel area, bath 2 underlying space lower floor 6 in, therefore, it is possible to prevent from shrouding in any position of lower floor 6 have hot gas.
As described above, in buildings 11, the exhaust magnetism of the air blast power of secondary gas blower 40 and the venting port 17A in roof portion 17 can be utilized to form such exhaust flow path: flow along stream a, b in lower floor 6, upper strata 5 is arrived from lower floor 6 via opening portion 14 afterwards along stream c, rise in upper strata 5 along stream d afterwards, be discharged to outdoor along stream e from venting port 17A afterwards.
In the structure of present embodiment, preferably, except making the work of multiple secondary gas blower 40, the auxiliary blower 42 being located at lower floor 6 is also made to work.
Auxiliary blower 42 is worked, along circulation flow path 41 air blast as shown in stream b, the air-flow of the warm air sent by multiple secondary gas blower 40 can be collected thus, the airflow via stream b can be made forcibly consistent.The airflow being stranded in lower floor 6 can be reduced thus, can be carried by side, opening portion 14 as high current.
The Japanese patent application 2013-240110 that the application filed an application based on November 20th, 2013, quotes its content in this as reference.
description of reference numerals
1, melting channel; 2, bath; 3, annealing furnace; 5, upper strata; 6, lower floor; 7, main pipeline; 8, main blower; 9, reticulation floor; 10, middle layer; 11, buildings; 12, floor; 13, sidewall; 14, opening portion; 15, floor; 16, sidewall; 17, roof portion; 18, connection section; 19, steel frame beam tectosome; 19a, interconnecting part; 20, refrigerating unit; 22, supply-pipe; 23, arm; 25, spray tube; 26, brick; 26A, end brick; 27, shell; 27A, drain pan; 28, molten metal; 33, temperature measuring equipment; 34, temperature indicating device; 35, control device; 37, suction port; 40, secondary gas blower; 41, circulation flow path; 42, auxiliary blower; G, melten glass; GR, glass ribbon; A, b, c, d, e, stream.
Claims (9)
1. a producing apparatus for float flat glass, is characterized in that,
The producing apparatus of this float flat glass comprises:
Melting channel, it manufactures melten glass for making frit melt, and this melting channel is arranged at the floor on the upper strata of buildings in the mode adjacent with opening portion, and the floor on described upper strata is located in the mode being communicated with levels in this opening portion;
Bath, it is supplied to the molten metal of described melten glass on receiving surface, and for being glass ribbon by described melten glass float forming, this bath is arranged on interconnecting part, and this interconnecting part is located at the floor on described upper strata in the mode being communicated with levels;
Main pipeline, it is located at the lower floor of described buildings, is connected with the spray tube that many roots and tops portion is relative with the bottom of the bath on described upper strata;
Main blower, it is connected with described main pipeline;
Reticulation floor, it is arranged on the lower side of described bath, between described upper strata and described lower floor, form middle layer;
Supply-pipe, it is connected to described main pipeline in the mode on through along the vertical direction described reticulation floor, has towards the described spray tube bottom the bath on described upper strata in its tip side; And
Multiple secondary gas blower, it is arranged on described reticulation floor, for the air above described reticulation floor is carried via the lower layer side of described reticulation floor to the lower position of described melting channel,
The producing apparatus of this float flat glass have make the air utilizing described secondary gas blower to be transported to the lower layer side of the lower position of described melting channel be transported to upper strata via described opening portion after be discharged to outdoor exhaust flow path.
2. the producing apparatus of float flat glass according to claim 1, is characterized in that,
Described reticulation floor is formed in the lower side of described melting channel along described bath, the circulation flow path be divided into by the floor of the sidewall of described lower floor, described lower floor and described reticulation floor area is formed in the width both sides on described reticulation floor, the air blast direction of described secondary gas blower is with the below towards described reticulation floor or in the horizontal direction towards the direction of described circulation flow path, and is the direction of the lower position side along described circulation flow path towards described melting channel.
3., according to the producing apparatus of float flat glass according to claim 1 or claim 2, it is characterized in that,
Be formed with venting port at the top of described buildings, the venting port of lower air from described top being discharged to upper strata from described opening portion is discharged.
4. the producing apparatus of the float flat glass according to any one in claim 1 ~ claim 3, is characterized in that,
The floor of described lower floor is provided with auxiliary blower near described main pipeline, and this auxiliary blower send the air near described main pipeline along the circulation flow path of described lower floor to the lower position side-blown of described melting channel.
5. the producing apparatus of the float flat glass according to any one in claim 1 ~ claim 4, is characterized in that,
The suction port of buildings extraneous air is formed near described main blower.
6. the producing apparatus of the float flat glass according to any one in claim 1 ~ claim 5, is characterized in that,
The floor on described upper strata comprises steel frame beam tectosome and floor panel, and described interconnecting part is local by dispensing described floor panel and steel frame beam tectosome is exposed.
7. the producing apparatus of the float flat glass according to any one in claim 1 ~ claim 6, is characterized in that,
Cut described glass ribbon and the sheet glass obtained is represent the non-alkali glass with following composition with the mass percent of oxide compound benchmark:
SiO
2：50％～73％，Al
2O
3：10.5％～24％，B
2O
3：0～12％，MgO：0～10％，CaO：0～14.5％，SrO：0～24％，BaO：0～13.5％，MgO+CaO+SrO+BaO：8％～29.5％，ZrO
2：0～5％。
8. the producing apparatus of the float flat glass according to any one in claim 1 ~ claim 6, is characterized in that,
Cut described glass ribbon and the sheet glass obtained is represent the non-alkali glass with following composition with the mass percent of oxide compound benchmark:
SiO
2：58％～66％，Al
2O
3：15％～22％，B
2O
3：5％～12％，MgO：0～8％，CaO：0～9％，SrO：3％～12.5％，BaO：0～2％，MgO+CaO+SrO+BaO：9％～18％。
9. the producing apparatus of the float flat glass according to any one in claim 1 ~ claim 6, is characterized in that,
Cut described glass ribbon and the sheet glass obtained is represent the non-alkali glass with following composition with the mass percent of oxide compound benchmark:
SiO
2：54％～73％，Al
2O
3：10.5％～22.5％，B
2O
3：0～5.5％，MgO：0～10％，CaO：0～9％，SrO：0～16％，BaO：0～2.5％，MgO+CaO+SrO+BaO：8％～26％。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013240110A JP2015098424A (en) | 2013-11-20 | 2013-11-20 | Facility for manufacturing float plate glass |
| JP2013-240110 | 2013-11-20 |
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| Publication Number | Publication Date |
|---|---|
| CN104649568A true CN104649568A (en) | 2015-05-27 |
| CN104649568B CN104649568B (en) | 2017-08-22 |
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|---|---|---|---|
| CN201410669613.4A Active CN104649568B (en) | 2013-11-20 | 2014-11-20 | The manufacturing equipment of float flat glass |
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|---|---|
| JP (1) | JP2015098424A (en) |
| KR (1) | KR20150058086A (en) |
| CN (1) | CN104649568B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3048692B1 (en) * | 2016-03-08 | 2018-04-20 | Fives Stein | FLAT GLASS PRODUCTION FACILITY COMPRISING A CONTINUOUS GLASS TEMPERATURE MEASUREMENT INSTALLATION AND METHOD OF ADJUSTING SUCH A MEASUREMENT INSTALLATION |
| DE102017124625A1 (en) * | 2016-12-22 | 2018-06-28 | Schott Ag | Thin glass substrate, method and apparatus for its manufacture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100223956A1 (en) * | 2009-03-03 | 2010-09-09 | Won-Jae Moon | Float bath system for manufacturing float glass |
| CN102372419A (en) * | 2010-08-11 | 2012-03-14 | 株式会社Lg化学 | Float bath for manufacturing float glass and cooling method of the same |
| CN103209935A (en) * | 2010-11-04 | 2013-07-17 | 旭硝子株式会社 | Method for producing float plate glass and apparatus for producing float plate glass |
-
2013
- 2013-11-20 JP JP2013240110A patent/JP2015098424A/en active Pending
-
2014
- 2014-11-20 KR KR1020140162416A patent/KR20150058086A/en active IP Right Grant
- 2014-11-20 CN CN201410669613.4A patent/CN104649568B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100223956A1 (en) * | 2009-03-03 | 2010-09-09 | Won-Jae Moon | Float bath system for manufacturing float glass |
| CN102372419A (en) * | 2010-08-11 | 2012-03-14 | 株式会社Lg化学 | Float bath for manufacturing float glass and cooling method of the same |
| CN103209935A (en) * | 2010-11-04 | 2013-07-17 | 旭硝子株式会社 | Method for producing float plate glass and apparatus for producing float plate glass |
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|---|---|
| JP2015098424A (en) | 2015-05-28 |
| CN104649568B (en) | 2017-08-22 |
| KR20150058086A (en) | 2015-05-28 |
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