CN114180816B - Feeding device and feeding process for float glass production - Google Patents
Feeding device and feeding process for float glass production Download PDFInfo
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- CN114180816B CN114180816B CN202111583349.9A CN202111583349A CN114180816B CN 114180816 B CN114180816 B CN 114180816B CN 202111583349 A CN202111583349 A CN 202111583349A CN 114180816 B CN114180816 B CN 114180816B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/02—Forehearths, i.e. feeder channels
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/005—Controlling, regulating or measuring
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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
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Abstract
The invention relates to the technical field of float glass, in particular to a feeding device for float glass production, which comprises a platinum material pipe and a flow groove, wherein the platinum material pipe is internally communicated to form a platinum channel for conveying molten glass; a groove-shaped channel for glass liquid to flow is formed inside the flow groove, a feed inlet communicated with an outlet of the platinum material pipe is formed in the bottom wall of the front end of the groove-shaped channel, the rear end of the groove-shaped channel is communicated to the front end of the tin bath, and a liftable flashboard is arranged in the groove-shaped channel. Also relates to a float glass production feeding process adopting the device, which mainly comprises a normal production mode, a gate replacing mode and a launder replacing mode. The process requirements of normal production, flashboard replacement and launder replacement can be met, the stability of the platinum channel is maintained to the maximum extent, the service life of the platinum channel is prolonged, and meanwhile, the flashboard replacement and launder replacement are simple and convenient to operate.
Description
Technical Field
The invention relates to the technical field of float glass, in particular to a feeding device and a feeding process for float glass production.
Background
The float process is adopted to produce special glass, including ultra-Thin glass, high-aluminum cover plate glass, high-borosilicate fireproof glass, TFT-LCD (Thin film transistor liquid crystal display) substrate glass and the like. According to the requirements of the production process, platinum channels are adopted by some special glass production lines as glass liquid conveying channels, and the special glass production lines are widely applied to the field of TFT-LCD liquid crystal substrates. The platinum channel replaces a refractory brick to serve as a channel for conveying molten glass, and has the advantages of less pollution, less volatilization, uniform temperature, fine temperature adjustment and the like. However, how the molten glass in the platinum channel is delivered to the tin bath determines the stability and the service life of the platinum channel.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a float glass production feeding device for conveying molten glass conveyed by a platinum channel to a tin bath, so as to overcome the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a feeding device for float glass production, which comprises a platinum material pipe and a flow groove, wherein a platinum channel for conveying molten glass is formed in the platinum material pipe in a run-through manner; a groove-shaped channel for glass liquid to flow is formed inside the flow groove, a feed inlet communicated with an outlet of the platinum material pipe is formed in the bottom wall of the front end of the groove-shaped channel, the rear end of the groove-shaped channel is communicated to the front end of the tin bath, and a liftable flashboard is arranged in the groove-shaped channel.
Preferably, the launder comprises a lip brick and side wall bricks arranged on the front side and two sides of the lip brick, a groove-shaped channel is formed between the side wall bricks and the lip brick, supporting insulating bricks are arranged on the outer sides of the side wall bricks and the lip brick, steel shells are arranged on the outer sides of the supporting insulating bricks, the feed inlet is arranged at the front end of the lip brick and penetrates through the lip brick, and the platinum material pipe penetrates through the supporting insulating bricks and the steel shells which are positioned on the outer sides of the lip brick and is communicated with the feed inlet.
Preferably, the supporting insulating brick comprises a lining brick and an insulating brick, the lining brick is arranged on the outer sides of the side wall brick and the lip brick, and the insulating brick is arranged on the outer side of the lining brick.
Preferably, the rear end of the lip tile is tongue-shaped.
Preferably, an auxiliary heating element is arranged on the outer peripheral side of the discharging pipe.
Preferably, the discharging outlet of the discharging pipe is provided with an openable or closable blocking plate and a top thread for keeping the blocking plate closed.
Preferably, the inlet of the platinum material pipe and the outlet of the platinum material pipe are both provided with electric connection flanges.
Preferably, the centre line of the inlet of the platinum pipe is angled with respect to the centre line of the outlet of the platinum pipe.
Preferably, the platinum material pipe comprises a front end material pipe, an intermediate material pipe and a rear end material pipe which are sequentially communicated, the cross section of the front end material pipe is circular, the cross section of the front end material pipe and the cross section of the rear end material pipe are respectively circular and rectangular, the cross section of the rear end material pipe is rectangular, and the rear end material pipe is an L-shaped pipe.
The invention also provides a float glass production feeding process, which adopts the float glass production feeding device and comprises the following modes: and (3) normal production mode: the discharging outlet of the discharging pipe is closed, glass liquid is conveyed in the platinum channel, the glass liquid enters the groove-shaped channel of the flow groove through the outlet and the feeding hole of the platinum pipe and flows to the front end of the tin bath along the groove-shaped channel, the flashboard is lifted, and the flow of the glass liquid flowing into the front end of the tin bath in the groove-shaped channel is adjusted; and (3) replacing a gate plate mode: opening a discharging outlet of a discharging pipe, lifting a flashboard for replacing the flashboard when the liquid level of the molten glass in the groove-shaped channel drops to the liquid level of the replaced flashboard, closing the discharging outlet of the discharging pipe when a new replaced flashboard drops to contact the molten glass, and enabling the liquid level of the replaced flashboard to be higher than the upper surface of the bottom wall of the groove-shaped channel and lower than the normal production liquid level; replacing a launder mode: and opening a discharging outlet of the discharging pipe, when the liquid level of the glass liquid in the groove-shaped channel is lowered to the liquid level of the replacement chute, disassembling and hoisting the chute to replace the chute, enabling the replaced new chute to fall and be connected with the platinum material pipe in place, and enabling the liquid level of the replacement chute to be lower than the outlet of the platinum material pipe.
Compared with the prior art, the invention has the remarkable progress that:
the flow groove is connected with the platinum channel of the platinum material pipe and the front end of the tin bath, the glass liquid conveyed in the platinum channel can enter the groove-shaped channel through the outlet of the platinum material pipe and the feed inlet of the groove-shaped channel of the flow groove and flow to the front end of the tin bath along the groove-shaped channel, so that the glass liquid conveyed by the platinum channel is conveyed to the tin bath, and meanwhile, the flashboard is lifted and lowered, so that the flow of the glass liquid flowing into the tin bath in the groove-shaped channel can be adjusted, and the requirements of a production process are met; in addition, when the flashboard or the launder needs to be replaced, the discharging outlet of the discharging pipe is opened, so that the liquid level of the glass liquid in the groove-shaped channel is lowered to the required liquid level, and the flashboard or the launder can be lifted for replacement. Therefore, the invention can meet the process requirements of normal production, gate plate replacement and launder replacement, maintain the stability of the platinum channel to the maximum extent, prolong the service life of the platinum channel, and meanwhile, the gate plate replacement and launder replacement are simple and convenient to operate, and have small influence on production and small economic loss.
Drawings
FIG. 1 is a schematic cross-sectional view of a float glass production feeder of an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of a trough in a float glass production feeder according to an embodiment of the present invention.
FIG. 3 isbase:Sub>A schematic cross-sectional view ofbase:Sub>A trough of the float glass production feeder of the embodiment of the present invention taken along the line A-A in FIG. 2.
FIG. 4 is a schematic front view of a platinum feed tube in a float glass production and feeding apparatus according to an embodiment of the present invention.
FIG. 5 is a schematic side view of a platinum feed tube in a float glass production feeder according to an embodiment of the present invention.
Wherein the reference numerals are as follows:
1. platinum material tube
10. Platinum channel
1a outlet
1b inlet
11. Discharging pipe
111. Blocking plate
112. Jackscrew
12. Power connection flange
13. Front end material pipe
14. Intermediate material pipe
15. Rear end material pipe
2. Launder
20. Grooved channel
20a feed inlet
21. Gate plate
22. Lip tile
23. Side wall brick
24. Support insulating brick
25. Steel shell
3. Front end of tin bath
Normal production liquid level of Y1
Y2 replacement flashboard liquid level
Y3 replacement launder liquid level
e direction of molten glass flow
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative, and not restrictive, of the invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
One embodiment of a float glass production feeder of the present invention is shown in fig. 1 through 5.
Referring to fig. 1, the float glass production feeding apparatus of the present embodiment includes a platinum material pipe 1 and a trough 2. The interior of the platinum material pipe 1 is communicated to form a platinum channel 10 for conveying molten glass, the end of an outlet 1a of the platinum material pipe 1 is provided with a discharging pipe 11, the interior of the discharging pipe 11 is communicated, the discharging pipe 11 is provided with a discharging inlet communicated with the platinum channel 10 and a discharging outlet which can be opened or closed, and the discharging inlet and the discharging outlet are respectively positioned at two ends of the discharging pipe 11. When a discharging outlet of the discharging pipe 11 is opened, the molten glass in the platinum channel 10 can flow out of the discharging outlet through the discharging pipe 11, and the discharging pipe 11 discharges; when the discharging outlet is closed, the discharging pipe 11 does not discharge. A groove-shaped channel 20 for glass liquid to flow is formed in the flow groove 2, a feed inlet 20a communicated with an outlet 1a of the platinum material pipe 1 is formed in the bottom wall of the front end of the groove-shaped channel 20, and the rear end of the groove-shaped channel 20 is communicated to the front end 3 of the tin bath. In this embodiment, the direction of the molten glass flow in the channel-shaped passage 20 of the trough 2 (molten glass flow direction e) is defined as from "front" to "rear". The groove-shaped channel 20 is internally provided with a lifting flashboard 21, an interval for glass liquid to pass through is formed between the bottom end of the flashboard 21 and the bottom wall of the groove-shaped channel 20, the flashboard 21 is lifted or descended, the size of the interval between the flashboard 21 and the bottom wall of the groove-shaped channel 20 is adjusted, namely the opening size of the flashboard 21 is adjusted, and the glass liquid flow of the tin bath flowing into the groove-shaped channel 20 can be adjusted.
According to the float glass production feeding device, the flow groove 2 is connected with the platinum channel 10 of the platinum material pipe 1 and the front end 3 of the tin bath, glass liquid conveyed in the platinum channel 10 can enter the groove-shaped channel 20 through the outlet 1a of the platinum material pipe 1 and the feed inlet 20a of the groove-shaped channel 20 of the flow groove 2 and flow to the front end 3 of the tin bath along the groove-shaped channel 20, so that the glass liquid conveyed by the platinum channel 10 is conveyed to the tin bath, and meanwhile, the flashboard 21 is lifted and lowered, so that the flow of the glass liquid flowing into the tin bath in the groove-shaped channel 20 can be adjusted, and the glass liquid meets the production process requirements; in addition, when the gate plate 21 or the trough 2 needs to be replaced, the discharging outlet of the discharging pipe 11 is opened, so that the liquid level of the molten glass in the trough-shaped channel 20 is lowered to the required liquid level, and the gate plate 21 or the trough 2 can be lifted for replacement. Therefore, the float glass production feeding device of the embodiment can meet the process requirements of normal production, gate 21 replacement and launder 2 replacement, maintain the stability of the platinum channel 10 to the maximum extent, prolong the service life of the platinum channel 10, and meanwhile, the gate 21 replacement and launder 2 replacement are simple and convenient to operate, have small influence on production and have small economic loss.
Referring to fig. 2 and 3, in the present embodiment, the launder 2 preferably comprises a lip brick 22, a side wall brick 23, a supporting insulating brick 24 and a steel shell 25.
Wherein the lip 22 is arranged horizontally, and the lip 22 forms the bottom wall of the channel-shaped passage 20 of the launder 2 for contact with the molten glass. The material of the lip brick 22 is not limited, and preferably, any one of an α - β corundum brick, an AZS fused zirconia corundum brick, and a high-zirconium brick may be used.
The side wall bricks 23 are arranged on the front side of the lip brick 22 and on both sides of the lip brick 22, and a groove-shaped channel 20 is formed between the side wall bricks 23 and the lip brick 22. The material of the sidewall brick 23 is not limited, and preferably, any one of an α - β corundum brick, an AZS fused zirconia corundum brick, and a high-zirconium brick may be used.
And the outer sides of the side wall bricks 23 and the lip bricks 22 are provided with supporting insulating bricks 24, and the outer sides of the side wall bricks 23 and the lip bricks 22 refer to the outer side surfaces of the side wall bricks 23 and the lip bricks 22 far away from the inside of the groove-shaped channel 20. The supporting insulating bricks 24 are used for supporting the side wall bricks 23 and the lip bricks 22 and realizing an insulating function. Preferably, the supporting insulating bricks 24 may include lining bricks and insulating bricks. The lining tiles are provided on the outer sides of the side wall tile 23 and the lip tile 22, and the lining tiles serve to support the side wall tile 23 and the lip tile 22. The insulating brick is arranged on the outer side of the lining brick and used for realizing the heat insulation function and reducing the heat dissipation of the glass liquid at the position of the flow groove 2.
The outer side of the supporting insulating brick 24 is provided with a steel shell 25, and the steel shell 25 can be fixed with the supporting insulating brick 24 through a fastener. The lip brick 22, the side wall brick 23 and the supporting insulating brick 24 form a brick structure, the steel shell 25 and the fastening piece form a steel structure, and the steel structure is used as a stressed structural member to support the brick structure.
The feed inlet 20a of the groove-shaped channel 20 is arranged at the front end of the lip brick 22 and penetrates through the lip brick 22, the platinum material pipe 1 penetrates through the supporting insulating brick 24 and the steel shell 25 which are positioned outside the lip brick 22 and is communicated with the feed inlet 20a, so that the platinum channel 10 is communicated with the groove-shaped channel 20, and the platinum material pipe 1 is in sealing fit with the supporting insulating brick 24 and the steel shell 25. Therefore, the molten glass conveyed in the platinum channel 10 enters the trough-shaped channel 20 from the bottom of the launder 2, the molten glass entering the trough-shaped channel 20 flows along the upper surface of the lip 22 from the front end of the lip 22 to the rear end of the lip 22, and the rear end of the lip 22 is connected to the front end 3 of the tin bath, so that the molten glass is conveyed to the tin bath. An interval for glass liquid to pass is formed between the bottom end of the flashboard 21 and the upper surface of the lip brick 22, and the gap between the flashboard 21 and the upper surface of the lip brick 22 is adjusted by lifting or descending the flashboard 21, namely the opening size of the flashboard 21 is adjusted, so that the flow of the glass liquid flowing into the tin bath in the groove-shaped channel 20 can be adjusted.
Preferably, in this embodiment, the rear end of lip 22 is tongue-shaped.
The front end 3 of the tin bath is the initial part of glass forming, and in this embodiment, the structure of the front end 3 of the tin bath is not limited, and the existing tin bath structure can be adopted.
In this embodiment, it is preferable that an auxiliary heating member is provided on the outer peripheral side of the discharging pipe 11 on the platinum pipe 1. The discharging outlet of the discharging pipe 11 is opened, and when the discharging pipe 11 discharges, the frozen glass liquid at the discharging pipe 11 can be heated and melted by the auxiliary heating element, so that the glass liquid can flow out of the discharging pipe 11. The form of the auxiliary heating member is not limited as long as heating of the molten glass in the discharging pipe 11 can be achieved.
Referring to fig. 4 and 5, in the present embodiment, preferably, the discharging outlet of the discharging pipe 11 is provided with an openable or closable blocking plate 111 and a top thread 112 for keeping the blocking plate 111 closed. During normal production, the plug plate 111 is tightly pushed at the discharging outlet end of the discharging pipe 11 by the jackscrew 112, so that the plug plate 111 keeps the state of closing the discharging outlet of the discharging pipe 11, and the discharging pipe 11 is ensured not to discharge. When the material needs to be discharged, the jackscrew 112 is moved away, and the blocking plate 111 can be opened, so that the discharge outlet of the discharge pipe 11 is opened.
Referring to fig. 5, preferably, a discharging pipe 11 may be respectively disposed at both sides of the outlet 1a end of the platinum pipe 1.
Preferably, in this embodiment, the discharging inlet end of the discharging tube 11 and the platinum tube 1 may be connected by welding.
Referring to fig. 4, in the present embodiment, preferably, the inlet 1b of the platinum pipe 1 and the outlet 1a of the platinum pipe 1 are both provided with an electric connection flange 12 for electrifying and heating the platinum pipe 1.
Preferably, the center line of the inlet 1b of the platinum pipe 1 is angled with respect to the center line of the outlet 1a of the platinum pipe 1 to realize the change of the flow direction of the molten glass through the platinum passage 10. Preferably, the size of the angle between the center line of the inlet 1b of the platinum pipe 1 and the center line of the outlet 1a of the platinum pipe 1 may be in the range of 90 ° ± 15 °. Optimally, in the embodiment, the center line of the inlet 1b of the platinum pipe 1 is perpendicular to the center line of the outlet 1a of the platinum pipe 1, so that the molten glass horizontally entering the inlet 1b of the platinum pipe 1 can vertically flow out from the outlet 1a of the platinum pipe 1, and thus can vertically enter the trough-shaped channel 20 from the bottom of the launder 2, and the molten glass entering the trough-shaped channel 20 horizontally flows from the front end of the lip 22 to the rear end of the lip 22 along the upper surface of the lip 22.
Specifically, the platinum material tube 1 may include a front end material tube 13, an intermediate material tube 14, and a rear end material tube 15 that are sequentially communicated from front to back, where a cross-sectional shape of the front end material tube 13 is circular, a cross-sectional shape of the rear end material tube 15 is rectangular, and a cross-sectional shape of a front end and a cross-sectional shape of a rear end of the intermediate material tube 14 are circular and rectangular, respectively, so as to implement transitional connection between the front end material tube 13 and the rear end material tube 15. The rear end material pipe 15 is an L-shaped pipe, and the bending angle of the L-shaped pipe is preferably within the range of 90 +/-15 degrees. In this embodiment, preferably, the rear end material pipe 15 includes a horizontal section connected to the rear end of the intermediate material pipe 14, and a vertical section connected to the horizontal section perpendicularly to form an L shape, the vertical section extends upward from the rear end of the horizontal section, and the vertical section is connected to the horizontal section in an arc transition manner. The inlet 1b of the platinum material pipe 1 is positioned at the front end of the front end material pipe 13, and the outlet 1a of the platinum material pipe 1 is positioned at the upper end of the vertical section of the rear end material pipe 15. The discharge pipe 11 is arranged on a vertical section of the rear end pipe 15.
Preferably, in this embodiment, the outer circumferential side of the platinum pipe 1 may be wrapped by a refractory material and a steel structure. The material of the platinum tube 1 is not limited, and preferably, ptRh10, ptRh20 or dispersed PtRh10 material can be used. The wall thickness of the platinum pipe 1 is preferably set to 0.5mm to 2mm.
Based on the float glass production feeding device, the embodiment of the invention also provides a float glass production feeding process. Referring to fig. 1, the float glass production and feeding process of the present embodiment uses the float glass production and feeding device of the present embodiment, and includes the following modes: a normal production mode, a replacement gate mode and a replacement launder mode.
The gate plate 21 is eroded and washed by high-temperature molten glass, so that the lower edge of the gate plate 21 is uneven, flow fluctuation is caused, and production stability is influenced, so that the gate plate 21 needs to be replaced periodically, and a gate plate replacing mode is provided.
The erosion and the washing of the high-temperature molten glass in the launder 2, especially the erosion of the end part of the tongue-shaped part at the rear end of the lip brick 22 is firstly rapid, the molten glass contacts with the lining brick when flowing downwards and passing through the tongue-shaped part at the rear end of the lip brick 22 to generate defects, the erosion of the lip brick 22 causes the molten glass to enter the position of the front end 3 of the tin bath to move forwards, the float forming quality is adversely affected, and the launder 2 needs to be replaced regularly, so that a launder replacing mode is provided.
Wherein, the normal production mode is as follows: the discharging outlet of the discharging pipe 11 is closed, the molten glass is conveyed in the platinum channel 10, and the molten glass can pass through various functional sections from the kiln to obtain qualified molten glass and is conveyed into the inlet 1b of the platinum pipe 1 so as to enter the platinum channel 10. Preferably, the platinum-gold tube 1 can be heated electrically by means of electrical flanges 12 at the inlet 1b and outlet 1a of the platinum-gold tube 1 in order to adjust the temperature homogeneity of the glass melt. After flowing through the platinum channel 10, the glass liquid enters the groove-shaped channel 20 through the outlet 1a of the platinum material pipe 1 and the feed inlet 20a of the groove-shaped channel 20 of the flow groove 2, and flows to the front end 3 of the tin bath along the groove-shaped channel 20, so that the flashboard 21 is lifted, the opening between the flashboard 21 and the bottom wall of the groove-shaped channel 20 is adjusted, and the flow of the glass liquid flowing into the front end 3 of the tin bath in the groove-shaped channel 20 is adjusted, so that the requirements of a normal production process are met. The molten glass entering the front end 3 of the tin bath starts the forming process. In the normal production mode, the glass liquid level in front of the gate 21 is the normal production liquid level Y1.
The mode of replacing the flashboard is as follows: the discharging outlet of the discharging pipe 11 is opened to discharge the glass from the discharging pipe 11, and preferably, the frozen glass at the discharging pipe 11 can be heated and melted by the auxiliary heating element on the outer circumferential side of the discharging pipe 11 to increase the discharging flow. When the glass liquid level in the trough-shaped channel 20 of the launder 2 (glass liquid level before the flashboard 21) drops to the replacement flashboard level Y2, the flashboard 21 is lifted up to replace the flashboard 21. The replacement gate level Y2 is higher than the upper surface of the bottom wall of the grooved channel 20 (i.e., the upper surface of the lip 22) and lower than the normal production level Y1. Preferably, the replacement level Y2 is slightly higher than the upper surface of the bottom wall of the trough-shaped passage 20 and is far lower than the normal production level Y1. During operation, when the liquid level of the molten glass in the trough-shaped channel 20 of the trough 2 drops to the replacement gate plate liquid level Y2, the gate plate 21 can be lifted slowly to enable the gate plate 21 to leave the trough 2, at the moment, the molten glass continues to flow into the front end 3 of the tin bath along the trough-shaped channel 20, after the new gate plate 21 is replaced, the new gate plate 21 after replacement slowly drops into the trough-shaped channel 20 of the trough 2, when the new gate plate 21 after replacement drops to contact the molten glass, the discharging outlet of the discharging pipe 11 is closed slowly to enable the discharging pipe 11 to stop discharging, the liquid level of the molten glass in the trough-shaped channel 20 gradually rises, and the new gate plate 21 is matched to gradually drop until the liquid level of the molten glass in the trough-shaped channel 20, the opening degree of the gate plate and the temperature system recover to the normal production process system, namely recover to the production mode.
The runner replacing mode is as follows: the discharging outlet of the discharging pipe 11 is opened to discharge the glass from the discharging pipe 11, and preferably, the frozen glass at the discharging pipe 11 can be heated and melted by the auxiliary heating element on the outer circumferential side of the discharging pipe 11 to increase the discharging flow. When the glass liquid level in the trough-shaped channel 20 (glass liquid level in front of the flashboard 21) is lowered to the launder replacement level Y3, the launder 2 is detached and hoisted for launder 2 replacement. The liquid level Y3 of the replacement launder is lower than the outlet 1a of the platinum material pipe 1, so that the molten glass is not in the groove-shaped channel 20 of the launder 2 any longer. During operation, when the liquid level of the glass liquid in the groove-shaped channel 20 is lowered to the liquid level Y3 of the replacement launder, the connection and the sealing between the launder 2 and the platinum material pipe 1 can be removed, the launder 2 is hoisted for replacement, and when the launder 2 is replaced, the flashboard 21 is also replaced; and (3) heating the replaced new launder 2 and new flashboard 21, and enabling the heated new launder 2 and new flashboard 21 to fall down and be connected with the platinum material pipe 1 in place to seal. Then, the gate plate 21 in the new launder 2 is lowered to the bottom wall of the trough-shaped channel 20 of the launder 2, then the discharging outlet of the discharging pipe 11 is gradually closed, the discharging of the discharging pipe 11 is stopped, the liquid level of the glass liquid in the trough-shaped channel 20 gradually rises to be close to the normal production liquid level Y1, the gate plate 21 is gradually lifted, the glass liquid flows into the front end 3 of the tin bath through the gate plate 21, a leader is prepared to recover production, the opening degree of the gate plate is adjusted until the liquid level of the glass liquid in the trough-shaped channel 20, the opening degree of the gate plate and the temperature system recover to the normal production process system, namely the production mode is recovered.
Therefore, the float glass production feeding process can meet the process requirements of normal production, replacement of the gate plate 21 and replacement of the launder 2, the stability of the platinum channel 10 is maintained to the maximum extent, the service life of the platinum channel 10 is prolonged, and meanwhile, the replacement of the gate plate 21 and the replacement of the launder 2 are simple and convenient to operate, the production influence is small, and the economic loss is small.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The float glass production feeding device is characterized by comprising a platinum material pipe (1) and a flow groove (2), wherein a platinum channel (10) for conveying molten glass is formed by penetrating the inside of the platinum material pipe (1), an internally-penetrated discharging pipe (11) is arranged at the end of an outlet (1 a) of the platinum material pipe (1), and the discharging pipe (11) is provided with a discharging inlet communicated with the platinum channel (10) and a discharging outlet which can be opened or closed; the glass melting furnace is characterized in that a groove-shaped channel (20) for glass liquid to flow through is formed inside the flow groove (2), a feeding hole (20 a) communicated with an outlet (1 a) of the platinum material pipe (1) is formed in the bottom wall of the front end of the groove-shaped channel (20), the rear end of the groove-shaped channel (20) is communicated to the front end (3) of the tin bath, and a liftable flashboard (21) is arranged in the groove-shaped channel (20).
2. The float glass production feeding device according to claim 1, wherein the runner (2) comprises a lip brick (22) and side wall bricks (23) arranged on the front side and two sides of the lip brick (22), the side wall bricks (23) and the lip brick (22) form the groove-shaped channel (20), the side wall bricks (23) and the outer sides of the lip brick (22) are provided with supporting insulating bricks (24), the outer sides of the supporting insulating bricks (24) are provided with steel shells (25), the feeding hole (20 a) is arranged at the front end of the lip brick (22) and penetrates through the lip brick (22), and the platinum pipe (1) penetrates through the supporting insulating bricks (24) and the steel shells (25) which are arranged on the outer sides of the lip brick (22) and is communicated with the feeding hole (20 a).
3. Float glass production feeder according to claim 2, characterised in that the supporting insulating bricks (24) comprise lining bricks and insulating bricks, the lining bricks being placed on the outside of the side wall bricks (23) and the lip bricks (22), the insulating bricks being placed on the outside of the lining bricks.
4. Float glass production feeder according to claim 2, characterised in that the rear end of the lip (22) is tongue-shaped.
5. Float glass production feeder according to claim 1, characterised in that the discharge pipe (11) is provided with auxiliary heating elements on its peripheral side.
6. Float glass production feeder according to claim 1, characterised in that the discharge outlet of the discharge pipe (11) is provided with an openable or closable closure plate (111) and a jack screw (112) which keeps the closure plate (111) closed.
7. Float glass production feeding device according to claim 1, characterised in that the inlet (1 b) of the platinum feed tube (1) and the outlet (1 a) of the platinum feed tube (1) are provided with electrical flanges (12).
8. Float glass production feeder according to claim 1, characterised in that the centre line of the inlet (1 b) of the platinum pipe (1) is angled to the centre line of the outlet (1 a) of the platinum pipe (1).
9. The float glass production feeding device according to claim 8, wherein the platinum material pipe (1) comprises a front end material pipe (13), an intermediate material pipe (14) and a rear end material pipe (15) which are sequentially communicated, the cross section of the front end material pipe (13) is circular, the cross section of the front end and the cross section of the rear end of the intermediate material pipe (14) are respectively circular and rectangular, the cross section of the rear end material pipe (15) is rectangular, and the rear end material pipe (15) is an L-shaped pipe.
10. A float glass production feed process, characterized in that the float glass production feed apparatus of any one of claims 1 to 9 is used, comprising the following modes:
a normal production mode: a discharging outlet of the discharging pipe (11) is closed, glass liquid is conveyed into the platinum channel (10), the glass liquid enters the groove-shaped channel (20) of the flow groove (2) through an outlet (1 a) and the feeding hole (20 a) of the platinum pipe (1), and flows to the front end (3) of the tin bath along the groove-shaped channel (20), the flashboard (21) is lifted, and the flow of the glass liquid flowing into the front end (3) of the tin bath in the groove-shaped channel (20) is adjusted;
and (3) replacing a gate plate mode: opening a discharging outlet of the discharging pipe (11), lifting the gate plate (21) to replace the gate plate (21) when the liquid level of the glass liquid in the groove-shaped channel (20) drops to a replacement gate plate liquid level (Y2), and closing the discharging outlet of the discharging pipe (11) when a new replaced gate plate (21) drops to contact the glass liquid, wherein the replacement gate plate liquid level (Y2) is higher than the upper surface of the bottom wall of the groove-shaped channel (20) and lower than a normal production liquid level (Y1);
and (3) replacing a runner mode: opening the discharging outlet of the discharging pipe (11), when the liquid level of the glass liquid in the groove-shaped channel (20) drops to the replacement launder liquid level (Y3), disassembling and hoisting the launder (2) for replacing the launder (2), dropping the replaced new launder (2) and connecting the new launder (2) with the platinum material pipe (1) in place, wherein the replacement launder liquid level (Y3) is lower than the outlet (1 a) of the platinum material pipe (1).
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| CN202111583349.9A CN114180816B (en) | 2021-12-22 | 2021-12-22 | Feeding device and feeding process for float glass production |
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| CN114180816B true CN114180816B (en) | 2023-04-07 |
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| US4332607A (en) * | 1980-11-28 | 1982-06-01 | Ppg Industries, Inc. | Overhead mechanism for flat glass forming tweel |
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| CN209537285U (en) * | 2019-01-15 | 2019-10-25 | 绍兴旗滨玻璃有限公司 | Float glass flow channel device |
| CN211946782U (en) * | 2020-03-26 | 2020-11-17 | 上海吉驰玻璃科技有限公司 | Runner lip brick structure for float glass tin bath |
| CN213446808U (en) * | 2020-10-29 | 2021-06-15 | 东莞南玻太阳能玻璃有限公司 | Device for replacing runner gate plate in float glass production |
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| US4332607A (en) * | 1980-11-28 | 1982-06-01 | Ppg Industries, Inc. | Overhead mechanism for flat glass forming tweel |
| JP2011157249A (en) * | 2010-02-03 | 2011-08-18 | Asahi Glass Co Ltd | Tweel for controlling amount of molten glass and method for feeding molten glass |
| CN205420145U (en) * | 2016-03-11 | 2016-08-03 | 东旭科技集团有限公司 | Linking device that links up structure and platinum passageway |
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| CN114180816A (en) | 2022-03-15 |
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