CN211688809U - Glass liquid steady flow control mechanism of molten tin bath inlet suitable for special glass float process - Google Patents
Glass liquid steady flow control mechanism of molten tin bath inlet suitable for special glass float process Download PDFInfo
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Abstract
The utility model belongs to the technical field of special glass float production, a glass liquid steady flow control mechanism of molten tin bath entry suitable for special glass float is proposed. The glass liquid steady flow control mechanism at the inlet of the tin bath of the special glass float process is provided with a flashboard arranged in a flow passage at the tail end of a melting furnace; the rear end of a flow passage at the tail end of the melting furnace is provided with a lip brick; the lip brick is positioned above the tin bath inlet, and a combined liquid flow channel A is formed between the lip brick and the side wall brick I; the rear end of the side wall brick I is provided with a side wall brick II which is attached to the side wall brick I; two sides of the inlet of the molten tin bath are provided with two-section type current-limiting bricks connected with arc surfaces; the rear end of the side wall brick II is provided with a lintel brick; a combined liquid flow channel B with an opening at the upper end is formed among the flow limiting bricks, the side wall bricks II and the lintel bricks; a cover plate brick is arranged above the combined liquid flow channel B; and a 0-shell sealing space is formed among the cover plate brick, the side wall brick II and the lintel brick, and an electric heating silicon carbide rod is arranged in the 0-shell sealing space. The utility model provides high special glass quality and yield.
Description
Technical Field
The utility model belongs to the technical field of special glass float production, mainly relates to a molten glass steady flow control mechanism of molten tin bath entry suitable for special glass float.
Background
At present, special glass produced by using a small float process in the glass research and development field mainly comprises high alumina silica glass, high borosilicate glass and the like.
As a novel display material, the high-alumina-silica glass is mainly used in the field of touch screens of smart phones, tablet computers, touch control integrated machines and the like, and as a touch screen product, China consumes a large number of households, and most of the glass products are imported in the past.
The high borosilicate glass has good optical and electrical properties and very low thermal expansion coefficient, and can work for a long time at a high temperature of 450 ℃. With the emergence of float plate borosilicate glass, the use field of the borosilicate glass is further expanded, such as novel high-grade science and technology and safety fields of LCD projector protective cover plates, heat-resistant glass panels of outdoor large-scale lamps, heat-resistant glass table tops, high-grade bulletproof glass, high-grade fireproof glass and the like.
Compared with common float glass, the special glass such as high-alumina-silica glass, high-borosilicate glass and the like has the most outstanding characteristics of high melting temperature, high viscosity and high refractoriness, belongs to the leading-edge technology of the high-point field, strictly keeps the foreign technology secret, and lacks successful technical reference for late domestic research and initiation. The tonnage of the production line should not be too large in order to guarantee its glass quality. The tonnage of the float line of high-quality special glass produced at home and abroad is generally 30-100 t/d.
China is used as a birth place of the Luoyang float glass process which is one of three major float glass processes in the world to produce general AL2O3About 1.2 percent of large and medium float glass lines mainly comprising building glass and automobile glass are close to 400, and the production process technology of the conventional soda-lime-silica float glass with the thickness of 3-15mm is mastered. If the float process technology is successfully expanded to AL2O3The technical field of high-alumina-silica-high-borosilicate glass production, which achieves 4-20 percent, higher melting temperature, higher glass forming viscosity, larger production variety and thickness span of 0.3-8mm and higher forming control difficulty, has a profound influence on the technical upgrading of float glass in China.
At present, the float glass company and scientific research institute which are extremely practical in China actively research and develop and build a small float glass line to produce special float glass. As the production line generally has the characteristics of small tonnage of 30-50t/d, large adjustable range of output of nearly 50%, large span of variation of production varieties and thickness of 0.3-8mm, high production control difficulty and the like, the perfected successful production technical experience and reasonable and fine process design are still gradually searched and sought. Due to AL in the glass2O3The higher the content is, the higher the glass melting and forming viscosity is, besides the defects that the temperature control of a melting furnace clarification channel is unbalanced, the clarification is insufficient and micro bubbles are left to be highlighted, the forming defects of large glass surface waviness, prominent surface micro-wrinkles, difficult glass flattening and polishing, large optical deformation of a plate surface, drifting of fixed wet back ribs at two edges of the glass to the inside of an effective glass plate surface and the like caused by temperature-viscosity nonuniformity due to imperfect configuration of a forming tin bath inlet liquid flow channel are more prominent, the production quality and yield of special high-alumina-silica-silicon and high-borosilicate glass are seriously influenced, and the glass becomes a bottleneck restricting the production technology of special float glass to obtain great breakthrough.
The reasonable fine design configuration and the thermal state fine maintenance exploration of the key part structure at the joint of the channel outlet of the special glass small float glass kiln and the inlet of the forming tin bath become the first tasks which are urgently needed to be solved by design, research and development teams and production operators in the field at present.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims to provide a molten glass steady flow control mechanism suitable for a tin bath inlet of a special glass float process.
The utility model discloses with high aluminium silicon float glass kiln route export and shaping molten tin bath entry junction keyThe process analysis of the process flow form of the part lip tile part is an entry point for glass AL2O3The method has the advantages that the content of the high-strength high-.
The utility model adopts the following technical scheme for accomplishing the above purpose:
a glass liquid steady flow control mechanism suitable for the tin bath inlet of the special glass float process, the glass liquid steady flow control mechanism has flashboards arranged in the terminal flow passage of the melting furnace; the flashboard is arranged perpendicular to the flow direction of the molten glass, and a gap for flowing the molten glass is formed between the lower end surface of the flashboard and the bottom surface of a flow channel at the tail end of the melting furnace; the rear end of the melting furnace tail end runner is provided with a lip brick; the lip brick outlet nose end is arranged as an inclined cambered surface, the lip brick is positioned above the tin bath inlet, and a combined liquid flow channel A is formed between the lip brick and the side wall brick I; the rear end of the side wall brick I is provided with a side wall brick II which is attached to the side wall brick I; flow-limiting bricks are arranged on two sides of the molten tin bath inlet; the flow limiting brick is arranged backwards and outwards obliquely from the lip brick; the front ends of the flow limiting bricks on the two sides are attached to a back wetting brick which is arranged in a tin bath below the lip brick and is close to the front end wall of the tin bath, and the flow limiting bricks are of a novel movable two-section type cambered surface connection combined structure; glass liquid reflowing from the wet back area in a channel between the flow limiting bricks on two sides and the inner side surfaces of two side walls of the lip brick forms a glass edge; the rear end of the side wall brick II is provided with a lintel brick arranged in parallel to the flashboard; the lintel brick is positioned above the tin bath, and a channel for glass liquid to flow is arranged between the lintel brick and the bottom surface of the tin bath; a combined liquid flow channel B with an opening at the upper end is formed among the flow limiting bricks at the two sides, the side wall bricks II and the lintel bricks; a cover plate brick is arranged above the combined liquid flow channel B; the cover plateA 0-shell sealed space is formed among the bricks, the side wall bricks II and the lintel bricks, and N is introduced into the space during the production of the conventional float glass2The gas effectively prevents the outside air from polluting the tin liquid after entering the space of the tin bath through the gas sealing effect; when the special glass is produced, an electric heating silicon carbide rod is arranged in the sealed space; the electrical heating silicon carbon rods are arranged in a staggered manner from top to bottom, and are obliquely arranged from top to bottom; an electric heating silicon carbide rod is arranged between the lip brick and the wet back brick; and a supplementary heating mode of an electric heating silicon carbide rod is adopted, so that the cooling speed is reduced.
In the glass liquid steady flow control mechanism at the inlet of the tin bath of the special glass float method, the depth H of the flow channel in front of the flashboard1The control needs to satisfy equation 1:
in formula 1, G is the molten glass flow rate t/d, ρ is the molten glass density G/cm3, and W is*The width of the lip brick is mm, VFlow ofThe flow rate of molten glass at the outlet of the flow channel is mm/s; considering the stability of the control of the production liquid flow, the selection range of the width W of the flow channel outlet is 400-650 mm, and the flow velocity V of the molten glass at the flow channel outletFlow ofAnd the concentration is 3-6 mm/s.
In the glass liquid steady flow control mechanism at the inlet of the tin bath of the special glass float process, the distance H between the lip brick and the tin liquid surface2The value of the letter should satisfy H2*=60~65mm。
The distance between the lip brick and the wet back brick, namely the value range of the length L of the backflow area is 100-140 mm.
The distance between the lip brick and the current limiting brick is reverse distance B = 55-65 mm.
The diameter of each electric heating silicon-carbon rod is 50-80 mm; the number of the electrically heated silicon-carbon rods in the combined liquid flow channel B is 3-5 according to the variation trend amplitude of the viscosity of the glass along with the temperature and the sectional area of the 0-Bei side wall, and the total power is 60-80 kw.
The utility model provides a glass liquid steady flow control mechanism suitable for molten tin bath entry of little float process of special glass, from the conservation of quality and the mobile form law of hydrodynamics, combine production reality, propose to be applicable to the peculiar runner lip brick position structural design of special glass little float line and technology configuration for the glass liquid at the lip brick position of special glass high viscosity, large-span variety scope, little float line flows the form and is in controllable, adjustable steady flow state: the method comprises the following specific steps:
1. the correction coefficient is added, and H1 and W flow channels and lip brick channels are reasonably arranged, so that the kinetic energy requirement of small-flow molten glass can be met in a sufficient pressure difference state when the molten glass from the melting furnace passes through the flow regulating gate.
2. Reasonably set H2In a 0-shell sealed space formed by the cover plate brick, the side wall brick II and the tin lintel brick, a 0-shell space silicon carbon rod with certain power is specially added for special glass to electrically heat, so that the temperature difference of the inner layer and the outer layer of the glass liquid is reduced, and the flattening and polishing quality of the surface of the glass liquid is improved; in the upper space of the wetback brick at the lower part of the lip brick, the electrical heating strengthening 'high viscosity and small flow' float glass liquid reflux quantity of a silicon carbon rod in the wetback area is increased, so that when glass liquid flows through a combined liquid flow channel formed by the lip brick and a side wall brick I of the lip brick, a small amount of glass liquid which is in contact with the lip brick, is polluted by refractory materials and is rich in refractory material oxides flows out of the nose end of the lip brick, and the glass liquid which is separated from the forward flowing glass liquid flows towards the direction of the wetback brick, thereby forming reasonably controlled wetback flow with certain kinetic energy and viscosity requirements; then wet back flow can flow to both sides along wet back brick naturally, later through lip brick's sideline and the novel movable current-limiting brick between the reasonable channel B region that sets up with the lip brick under good glass liquid advance the flow join, and then form as far as possible and be close to the glass tape edge portion and lie in the wet back line of being cut out the limit within range. The movable novel flow-limiting brick is a two-section type cambered surface connection combined structure and has the characteristics of flexibly adjusting the opening degree, the flow-limiting length in the glass liquid flowing process and the subsequent epitaxial flowing angle and facilitating thermal state replacement. Therefore, the polluted glass liquid contacting the runner lip brick forms the edge of the glass due to the controllable backflow effect, so that the defects are concentrated on the edge of the glass and removed in the process of cutting and removing the edge of the glass, and the quality of the glass and the assembly are ensuredThe rate of finished products is high; and simultaneously, the utility model discloses with the help of the regional silicon carbide rod supplemental heating of 0 shellfish, slow down the outer temperature difference in the glass liquid, keep the last effective qualified board wide range's of glass area's of the good glass liquid composition of the stationary flow state of upper strata and intermediate level in the lip brick passageway lower surface and upper surface, improve glass surface quality.
To sum up, the utility model discloses make the little unique "glass surface waviness degree of special glass float the normal line greatly, the little fold in surface is prominent, the fixed wet back line of glass limit portion to effective glass's inside drift, the glass lower surface produces little open air bubble or close a bubble, glass shakeouts the polishing difficulty, outstanding shaping defect such as face optical deformation is big can effective control and alleviate, has improved glass quality and yield.
Drawings
FIG. 1 is a schematic view of the structure of the special small float channel lip brick and the glass flow.
Fig. 2 is a sectional view taken along line I-I of fig. 1.
In the figure: 1. flashboard, 2, lip brick, 3, side wall brick I, 4, wet back brick, 5, current limiting brick, 6, 0 shell cover plate, 7, side wall brick II, 8, lintel brick, 9 and electrical heating silicon carbide rod.
Detailed Description
The present invention will be described with reference to the accompanying drawings and specific embodiments, in which the front end and the rear end are referred to as the rear end in the direction of the molten glass flow;
as shown in figures 1 and 2, the molten glass steady flow control mechanism of a tin bath inlet suitable for a special glass float process is provided with a gate plate 1 arranged in a flow passage at the tail end of a melting furnace; the gate plate 1 is arranged perpendicular to the flowing direction of the molten glass, and a gap for flowing the molten glass is formed between the lower end surface of the gate plate 1 and the bottom surface of a flow channel at the tail end of the melting furnace; the rear end of the melting furnace tail end runner is provided with a lip brick 2; the outlet nose end of the lip brick 2 is arranged as an inclined cambered surface, the lip brick 2 is positioned above the tin bath inlet, and a combined liquid flow channel A is formed between the lip brick 2 and the side wall brick I3; the rear end of the side wall brick I3 is provided with a side wall brick II 7 which is attached to the side wall brick I3; two sides of the tin bath inlet are provided with flow-limiting bricks 5; the flow limiting brick 5 is obliquely arranged backwards and outwards from the lip brick; the front ends of the flow limiting bricks 5 on the two sides are attached to a wet back brick 4 which is arranged in a tin bath below the lip brick and is close to the front end wall of the tin bath, and the flow limiting bricks 5 are of a novel movable two-section cambered surface connection combined structure; glass liquid reflowing from the wet back area in a channel (B region) between the flow limiting bricks 5 at two sides and the inner side surfaces of two side walls of the lip brick 2 forms a glass edge; the rear end of the side wall brick II 7 is provided with a lintel brick 8 arranged in parallel to the flashboard; the lintel brick 8 is positioned above the tin bath, and a channel for glass liquid to flow is arranged between the lintel brick 8 and the bottom surface of the tin bath; a combined liquid flow channel B with an opening at the upper end is formed among the flow limiting bricks 5 at the two sides, the side wall bricks II 7 and the lintel bricks 8; a cover plate brick 6 is arranged above the combined liquid flow channel B; a 0-shell sealed space is formed among the cover plate brick 6, the side wall brick II 7 and the lintel brick 8, N2 gas is introduced into the space during the production of the conventional float glass, and the external air is effectively prevented from polluting tin liquid after entering the space of the tin bath through the gas sealing effect; when the special glass is produced, an electric heating silicon carbide rod 9 is arranged in the sealed space; the electrical heating silicon carbide rods 9 are arranged in a staggered manner from top to bottom, and the electrical heating silicon carbide rods 9 are obliquely arranged from top to bottom; an electric heating silicon carbide rod is arranged between the lip brick 2 and the wet back brick 4; and a supplementary heating mode of an electric heating silicon carbide rod is adopted, so that the cooling speed is reduced.
In the glass liquid steady flow control mechanism at the inlet of the tin bath of the special glass float method, the depth H of the flow channel in front of the flashboard1The control needs to satisfy equation 1:
in formula 1, G is the molten glass flow rate t/d, ρ is the molten glass density G/cm3, and W is*The width of the lip brick is mm, VFlow ofThe flow rate of molten glass at the outlet of the flow channel is mm/s; the stability of the production liquid flow control is considered, the selection range of the width W of the flow channel outlet is 400-650 mm, and the flow velocity V of the molten glass at the flow channel outletFlow ofIs 3 to 6mm/s.
Molten glass at inlet of tin bath of special glass float processIn the steady flow control mechanism, the distance H between the lip brick and the tin liquid surface2The value of the letter should satisfy H2= 60-65 mm; the distance between the lip brick and the tin liquid level is H according to the experience of the general conventional floating normal line2And = 65-70 mm. Distance H between lip brick and tin liquid level2The free falling path of the molten glass is determined, the production capacity is large, the flow rate of the molten glass is large, and the suspension height is correspondingly increased; the glass liquid is too small in suspension height, backflow can be inhibited, the glass liquid spreads backwards on the bottom surface of the flow trough to form retention, crystallization is easy to generate, and the glass liquid is not beneficial to flowing. The suspension height of the glass liquid is too large, the free flow of the glass is unstable, and wrinkles and folding bubbles are generated. Aiming at the small floating normal line of the special glass, the small flow and the high viscosity are considered, and the distance between the corresponding lip brick and the tin liquid level takes the value H2*=60~65mm。
The distance between the lip brick and the wet back brick, namely the value range of the length L of the backflow area is 100-140 mm, and the length L of the backflow area is = 140-200 mm in a common floating normal line. If the distance is too large, wet back flow is increased, so that a wet back line moves inwards, the width of the edge to be cut is increased, and the yield is influenced; if the distance is too small, the glass liquid is stretched into the short space, the backflow of the glass liquid is limited, and the glass liquid with impurities cannot be shunted to the natural edge, so that the quality of the plate surface is influenced. However, for the small float line of the special glass, because the viscosity of the glass is high, when the glass liquid flows down from the lip brick, the kinetic energy naturally spreading outwards from the falling point is insufficient, and because the width B of the lip brick is small, the proper backflow of the glass liquid is considered, the length of a backflow area can be properly reduced, and the value range L = 100-140 mm according to physical simulation and practical experience; meanwhile, the electrical heating of a silicon carbide rod is added in the wet back area to supplement heat, so that the backflow effect of the high-viscosity and small-flow glass liquid is strengthened.
The distance between the lip brick and the current limiting brick is reverse distance B = 55-65 mm; the general floating line is normally produced by 3-12 mm glass, the distance (reverse distance) B between the lip brick and the current-limiting brick has no special requirement, but when an electronic glass production line with the thickness of less than 3mm is produced, the importance of the distance B between the lip brick and the current-limiting brick is highlighted: the distance is too small, so that the wet back flow is blocked from flowing forwards, and impurities and crystallization on the lower surface of the glass are easy to appear; the spacing is too large, the wet back line moves inwards, the width of the edge needing to be cut is increased, and the rate of finished products is influenced.
Aiming at the special glass float method, when the glass liquid flow with small flow flows down from the lip brick due to large viscosity, the kinetic energy naturally spreading outwards from the total falling point is insufficient, the backflow amount of the glass liquid is small, the outstanding problem is that the glass liquid and the flow-limiting brick are possibly in a separated state, relatively speaking, the distance between the two side boundaries of the lip brick and the flow-limiting brick is large, the effect of the flow-limiting brick is weakened, therefore, on one hand, heating measures of a silicon carbide rod 9 can be added in the space above the lip brick 2 and a wet back area as shown in figures 1 and 2, the reflux quantity of glass liquid and the outward spreading kinetic energy of the glass liquid at the falling point of a tin bath are strengthened, on the other hand, a two-section type cambered surface connection combined novel movable current-limiting brick 5 can be adopted as shown in figure 2, the opening and the inclination angle of the flow limiting brick 5 can be flexibly adjusted, and repeated practical verification is carried out for many times, so that the distance (namely the reverse distance) B = 55-65 mm between the boundary of the special glass small floating normal lip brick and the flow limiting brick is reasonable.
The defects of large waviness of the glass surface, prominent surface micro-wrinkles and large optical deformation of the glass surface are caused by small heat brought by small-tonnage molten glass, large cooling speed block of the upper surface of the glass when the high-alumina glass flows through a kiln passage and a lip brick part, large temperature gradient in the thickness direction and large viscosity increase amplitude. In this case, the normal float line of N2 gas introduced into the 0-beta space is obviously not suitable, but rather, the surface cooling of the high alumina glass is increased, and the degree of surface waviness and wrinkle defects of the glass are increased. Therefore, when the small-tonnage high-alumina glass is produced, N2 gas introduced into the zero-bainite space needs to be cut off, meanwhile, the heating mode of the silicon carbide rod shown in the figures 1 and 2 is adopted, the cooling speed is reduced, holes which can penetrate through the silicon carbide rod 9 are reserved on the side wall brick II 7 of the zero-bainite space, the shape of glass liquid flowing into a tin bath from a lip brick can be preferably conformed, and the side wall brick II is obliquely arranged from top to bottom. The holes can be used in the production process, and a silicon carbide rod is used for heating when glass with higher viscosity is produced, so that the surface viscosity is reduced, and the glass quality is improved; n2 gas can be properly introduced when producing glass with low viscosity, so as to prevent the tin bath from being polluted by outside air.
Considering the above consideration factors and considering the strength problem of a single silicon carbide rod, the diameter of the silicon carbide rod increased by 0 shellfish space is generally 50-80 mm due to the length of about 2000 mm; the number of the silicon carbide rods with the space of 0 shell increased is 3-5 according to the trend amplitude of the viscosity of the glass along with the temperature change and the size of the sectional area of the side wall brick II with the space of 0 shell, and the total power of 60-80 kw is reasonable.
The defects that the fixed wet back line at the edge of the glass drifts towards the inside of the effective glass and the small open bubbles or closed bubbles are generated on the lower surface of the glass are all caused by the characteristic factors of small production liquid flow, small heat brought by the glass, large viscosity and the like of a special glass small-tonnage production line, and relatively speaking, the height H from a lip brick arranged by the general float process experience to the tin liquid level is adopted2The back flow area L in the back wet brick area is relatively overlong, the distance B between the edge line of the lip brick and the flow limiting brick is relatively overlarge, and the prominent phenomena of low temperature of the back wet area and small glass liquid backflow are further shown. It is usually on one side of the ribbon, but sometimes extends halfway across the ribbon. On the other hand, the small backflow of the molten glass can cause the wet back line to move inwards, and the glass yield is influenced.
And (3) performing symptomatic treatment on small bubbles on the lower surface of the glass: the temperature of the flow channel is increased to ensure good sealing around the wet back area, a silicon carbon rod heater is additionally arranged in the space of the upper area of the wet back brick to strengthen the back lining backflow liquid, so that the stagnation of the glass liquid in the backflow area is weakened, and the normal glass liquid flow of the wet back area is ensured.
Carrying out symptomatic treatment measures on the inward movement of the wet back line: firstly, checking the wet back brick area, and if the backflow area is too long, replacing the large-size wet back brick. Checking the distance between the edge line of the lip brick and the current-limiting brick, adjusting the position of the current-limiting brick if the distance is too large, pushing the front section of the novel current-limiting brick inwards, and reducing the opening degree of the rear section and the distance.
Claims (5)
1. A glass liquid steady flow control mechanism suitable for the tin bath inlet of the special glass float process, the glass liquid steady flow control mechanism has flashboards arranged in the terminal flow passage of the melting furnace; the flashboard is arranged perpendicular to the flow direction of the molten glass, and a gap for flowing the molten glass is formed between the lower end surface of the flashboard and the bottom surface of a flow channel at the tail end of the melting furnace; the rear end of the melting furnace tail end runner is provided with a lip brick; the lip brick outlet nose end is arranged as an inclined cambered surface, the lip brick is positioned above the tin bath inlet, and a combined liquid flow channel A is formed between the lip brick and the side wall brick I; the method is characterized in that: the rear end of the side wall brick I is provided with a side wall brick II which is attached to the side wall brick I; flow-limiting bricks are arranged on two sides of the molten tin bath inlet; the flow limiting brick is arranged backwards and outwards obliquely from the lip brick; the front ends of the flow limiting bricks on the two sides are attached to a back wetting brick which is arranged in a tin bath below the lip brick and is close to the front end wall of the tin bath, and the flow limiting bricks are of a movable two-section cambered surface connection combined structure; the rear end of the side wall brick II is provided with a lintel brick arranged in parallel to the flashboard; the lintel brick is positioned above the tin bath, and a channel for glass liquid to flow is arranged between the lintel brick and the bottom surface of the tin bath; a combined liquid flow channel B with an opening at the upper end is formed among the flow limiting bricks at the two sides, the side wall bricks II and the lintel bricks; a cover plate brick is arranged above the combined liquid flow channel B; a sealing space is formed among the cover plate bricks, the side wall bricks II and the lintel bricks; an electric heating silicon carbide rod is arranged in the sealed space; the electrical heating silicon carbon rods are arranged in staggered layers from top to bottom, and are obliquely arranged from top to bottom; an electric heating silicon carbide rod is arranged between the lip brick and the wet back brick.
2. The molten glass steady flow control mechanism of the tin bath inlet suitable for the special glass float process as claimed in claim 1, wherein: in the glass liquid steady flow control mechanism at the inlet of the tin bath of the special glass float process, the distance H between the lip brick and the tin liquid surface2The value of the letter should satisfy H2*=60~65mm。
3. The molten glass steady flow control mechanism of the tin bath inlet suitable for the special glass float process as claimed in claim 1, wherein: the distance between the lip brick and the wet back brick, namely the value range of the length L of the backflow area is 100-140 mm.
4. The molten glass steady flow control mechanism of the tin bath inlet suitable for the special glass float process as claimed in claim 1, wherein: the distance between the lip brick and the current limiting brick is reverse distance B = 55-65 mm.
5. The molten glass steady flow control mechanism of the tin bath inlet suitable for the special glass float process as claimed in claim 1, wherein: the diameter of each electric heating silicon-carbon rod is 50-80 mm; the number of the electrically heated silicon-carbon rods in the sealed space above the combined liquid flow channel B is 3-5 according to the change trend amplitude of the viscosity of the glass along with the temperature and the sectional area of the side wall brick II, and the total power is 60-80 kw.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170618A (en) * | 2019-11-27 | 2020-05-19 | 海南中航特玻科技有限公司 | Glass liquid steady flow control mechanism of molten tin bath inlet suitable for special glass float process |
| CN113532695A (en) * | 2021-08-14 | 2021-10-22 | 中建材蚌埠玻璃工业设计研究院有限公司 | Tin bath physical simulation method suitable for float glass |
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2019
- 2019-11-27 CN CN201922075759.7U patent/CN211688809U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170618A (en) * | 2019-11-27 | 2020-05-19 | 海南中航特玻科技有限公司 | Glass liquid steady flow control mechanism of molten tin bath inlet suitable for special glass float process |
| CN111170618B (en) * | 2019-11-27 | 2024-06-18 | 海南海控特玻科技有限公司 | Molten glass steady flow control mechanism suitable for tin bath inlet of special glass float process |
| CN113532695A (en) * | 2021-08-14 | 2021-10-22 | 中建材蚌埠玻璃工业设计研究院有限公司 | Tin bath physical simulation method suitable for float glass |
| CN113532695B (en) * | 2021-08-14 | 2024-04-19 | 中建材玻璃新材料研究院集团有限公司 | Tin bath physical simulation method suitable for float glass |
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Address after: 570100 2001, floor 1, building A17, Hainan Ecological Software Park, hi tech industry demonstration zone, Chengmai County, Hainan Province Patentee after: Hainan Haikong special glass technology Co., Ltd Address before: 571924 county level administrative division of Hainan Province Patentee before: AVIC (HAINAN) SPECIAL GLASS MATERIALS Co.,Ltd. |