WO2010150586A1 - 原料供給方法及び原料供給装置、並びにガラス板の製造装置及び製造方法 - Google Patents
原料供給方法及び原料供給装置、並びにガラス板の製造装置及び製造方法 Download PDFInfo
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- WO2010150586A1 WO2010150586A1 PCT/JP2010/056263 JP2010056263W WO2010150586A1 WO 2010150586 A1 WO2010150586 A1 WO 2010150586A1 JP 2010056263 W JP2010056263 W JP 2010056263W WO 2010150586 A1 WO2010150586 A1 WO 2010150586A1
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- raw material
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B3/00—Charging the melting furnaces
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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
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
Definitions
- the present invention relates to a raw material supply method and a raw material supply device for supplying a glass raw material to a melting tank of a glass melting furnace, and a glass plate manufacturing apparatus and manufacturing method.
- a raw material supply method for supplying a glass raw material to a melting tank of a glass melting furnace a method using a screw feeder, a vibration feeder, a blanket feeder, an oscillation feeder, or a combination thereof is generally known.
- Non-Patent Document 1 a combination of a blanket feeder and an oscillation feeder is used, as shown in FIG. 3 is moved back and forth, and the glass raw material 1 on the transport surface 4 of the transport pan 3 is put into the melting tank 6 of the glass melting furnace 5 (see, for example, Non-Patent Document 1).
- the conveyance surface 4 of the conveyance pan 3 is an inclined surface that is lowered downward toward the glass melting furnace 5.
- the glass raw material 1 is sent out (dropped) from the hopper 2 onto the transport surface 4.
- the glass raw material 1 on the transport surface 4 is charged into the melting tank 6.
- the conveying surface 4 is an inclined surface that falls forward toward the inside of the glass melting furnace 5, even if the glass raw material 1 slides down due to the inclination from the conveying surface 4, it is introduced into the melting tank 6.
- a front end 3 a of the transport pan 3 is disposed in the vicinity of the raw material inlet 7. Therefore, the conveyance pan 3 is heated by the radiant heat from the glass melting furnace 5, and the glass raw material 1 on the conveyance surface 4 becomes high temperature. For this reason, when the glass raw material 1 changes in quality and the fluidity
- the present invention has been made in view of the above problems, and is a raw material supply method and a raw material supply apparatus capable of stably feeding a glass raw material on a conveyance surface into a glass melting furnace in a certain amount each time.
- An object is to provide a manufacturing apparatus and a manufacturing method.
- the raw material supply method of the present invention comprises: In the raw material supply method of dropping the glass raw material from the hopper onto the transport pan, reciprocating the transport pan and charging the glass raw material on the transport surface of the transport pan into the melting tank of the glass melting furnace, When the transport pan advances from the transport direction upstream end to the transport direction downstream end, a cutter that can be inserted into the glass raw material on the transport surface moves to a standby position above the glass raw material on the transport surface, When the transport pan retracts from the downstream end in the transport direction to the upstream end in the transport direction, the cutter moves to the glass raw material insertion position on the transport surface and stops at the insertion position along with the backward movement of the transport pan. A cutter extrudes at least a part of the glass raw material downstream of the cutter in the transport direction from the transport pan and puts it into the melting tank.
- the raw material supply apparatus of the present invention is In a raw material supply apparatus having a transport pan for transporting a glass raw material dropped from a hopper, reciprocating the transport pan, and charging the glass raw material on the transport surface of the transport pan into a melting tank of a glass melting furnace, A cutter that can be inserted into the glass raw material on the transport surface, When the transport pan advances from the transport direction upstream end to the transport direction downstream end, the cutter moves to a standby position above the glass raw material on the transport surface, When the transport pan retracts from the downstream end in the transport direction to the upstream end in the transport direction, the cutter moves to the glass raw material insertion position on the transport surface and stops at the insertion position along with the backward movement of the transport pan. A cutter extrudes at least a part of the glass raw material downstream of the cutter in the transport direction from the transport pan and puts it into the melting tank.
- the apparatus for producing a glass plate of the present invention comprises: The raw material supply apparatus of the present invention, a glass melting furnace for melting the glass raw material supplied by the raw material supply apparatus, and a forming furnace for forming the molten glass melted in the glass melting furnace into a sheet glass.
- the method for producing the glass plate of the present invention comprises: A glass plate is manufactured using the glass plate manufacturing apparatus of the present invention.
- the present invention it is possible to provide a raw material supply method and a raw material supply device, and a glass plate manufacturing apparatus and manufacturing method capable of stably feeding a glass raw material on a conveying surface into a glass melting furnace in a fixed amount. it can.
- FIG. 1 is a schematic view showing a conventional example of a raw material supply apparatus.
- FIG. 2 is a block diagram showing a configuration of a glass plate manufacturing apparatus according to an embodiment of the present invention.
- FIG. 3 is a cross-sectional view for explaining the configuration and operation of the raw material supply apparatus 10 and shows a state in which the transport pan 22 is located at the upstream end in the transport direction and the cutter 24 is in the insertion position.
- 4 is a cross-sectional view for explaining the operation of the cutter 24, and is a cross-sectional view taken along the line AA ′ of FIG. FIG.
- FIG. 5 is a cross-sectional view for explaining the configuration and operation of the raw material supply apparatus 10 and shows a state where the transport pan 22 is located at the upstream end in the transport direction and the cutter 24 is in the standby position.
- 6 is a cross-sectional view for explaining the operation of the cutter 24, and is a cross-sectional view taken along the line BB ′ of FIG.
- FIG. 7 is a cross-sectional view for explaining the configuration and operation of the raw material supply apparatus 10 and shows a state in which the transport pan 22 is located at the downstream end in the transport direction and the cutter 24 is in the standby position.
- FIG. 8 is a cross-sectional view for explaining the configuration and operation of the raw material supply apparatus 10 and shows a state in which the transport pan 22 is located at the downstream end in the transport direction and the cutter 24 is in the insertion position.
- FIG. 2 is a block diagram showing the configuration of a glass plate manufacturing apparatus according to an embodiment of the present invention, and arrows indicate the flow of glass raw material and molten glass.
- FIG. 3 is a cross-sectional view for explaining the configuration and operation of the raw material supply apparatus 10.
- the glass plate manufacturing apparatus includes a raw material supply device 10 for feeding a powdery or granular glass raw material G into the glass melting furnace 11, and a glass raw material G supplied by the raw material supply device 10. It has a glass melting furnace 11 for melting, and a molding furnace 12 for molding the molten glass L melted in the glass melting furnace 11 into a sheet glass.
- the glass melting furnace 11 may have a well-known configuration, for example, a raw material charging port 13, a melting tank 14, a clarification tank 15, and the like.
- a dustproof plate 16 for preventing the glass raw material G from scattering when the raw material is supplied is provided above the raw material inlet 13.
- the glass raw material G input from the raw material input port 13 moves to the downstream side (clarification tank 15 side) of the melting tank 14 while floating on the molten glass L in the melting tank 14.
- the glass raw material G is heated by the flame heat and radiant heat in the glass melting furnace 11 and the conduction heat from the molten glass L in the process of moving to the clarification tank 15 side, and gradually melts into the molten glass L.
- the supply of the glass raw material G using the raw material supply device 10 will be described later.
- the molten glass L is obtained by melting the powdery or granular glass raw material G, it contains a large number of bubbles inside. Therefore, the molten glass L is sent from the melting tank 14 to the clarification tank 15, and bubbles are lifted and removed to perform clarification. Further, a vacuum degassing tank may be provided between the clarification tank 15 and the molding furnace 12.
- the forming furnace 12 may have a well-known configuration.
- the forming furnace 12 includes a float tank 17 and the like.
- the clarified molten glass L flows out onto the molten metal (for example, molten tin) in the float bath 17 and becomes plate-like glass due to the smooth surface of the molten metal.
- the plate-like glass is cooled while moving to the downstream side of the float tank 17 to produce a glass plate.
- the molding furnace 12 is composed of the float tank 17 and the like, but the present invention is not limited to this.
- the molding furnace 12 is composed of a molded body having a wedge-shaped cross section that converges downward.
- the clarified molten glass L flows down along both side surfaces of the molded body and joins at the lower edge of the molded body to form a sheet glass.
- the plate glass is cooled while being pulled downward, and a glass plate is manufactured.
- a plurality of (for example, two) raw material supply apparatuses 10 are installed side by side in the glass melting furnace 11 (melting tank 14) (only one is shown in FIG. 3).
- Each raw material supply device 10 includes a hopper 21 adjacent to the glass melting furnace 11, a transport pan 22 for transporting the glass raw material G dropped from the hopper 21 to the glass melting furnace 11, and a transport surface 23 of the transport pan 22.
- a cutter 24 that can be inserted into the glass raw material G is provided.
- the hopper 21 is formed of a steel material (for example, SS material) or the like.
- the hopper 21 has a cylindrical shape that tapers downward, and has an inlet 21a on the upper side and an outlet 21b on the lower side.
- the hopper 21 is divided into a plurality of members in the vertical direction, and can be expanded and contracted in the vertical direction. Thereby, the position of the conveyance pan 22 can be adjusted in the vertical direction.
- a mixer (not shown) is installed above the hopper inlet 21a to measure and mix a plurality of types of raw materials into a glass raw material G.
- the glass raw material G mixed by the mixer is dropped into the hopper inlet 21a and stored in the hopper.
- raw materials before mixing are pneumatically fed to the mixer through a raw material supply pipe (not shown).
- the inner circumference of the raw material supply pipe is covered with an electroformed brick having excellent wear resistance.
- the hopper outlet 21 b has a gap 25 between the conveyance surface 23 of the conveyance pan 22. From this gap 25, the glass material G in the hopper 21 is sent out (dropped) to the transport surface 23.
- the size of the gap 25, the inclination angle ⁇ of the conveyance surface 23 with respect to the horizontal plane, and the angle of repose of the glass material G are set so that the glass material G is appropriately sent to the conveyance surface 23.
- the inclination angle ⁇ (see FIG. 3) of the transport surface 23 with respect to the horizontal plane is preferably 8 ° to 15 °, and more preferably 10 ° to 12 °.
- the angle of repose of the glass raw material G is preferably 30 ° to 45 °, more preferably 35 ° to 40 °.
- the angle of repose was measured by the method described in JIS R 9301-2-2 “Alumina powder—Part 2: Physical property measurement method-2: Angle of repose”. More specifically, the angle of repose is determined by passing a specimen (glass raw material G before being stored in the hopper 21) through a sieve having a diameter of 80 mm and a mesh size of 710 ⁇ m while vibrating it to a height of 160 mm on a horizontal plane. When it is gently dropped from a funnel onto a table with a diameter of 80 mm, it is defined by measuring the angle formed by the generatrix of the cone formed by the test body and the horizontal plane. Here, the amount of powder falling is assumed to drop until the angle of repose is substantially stabilized.
- the conveyance pan 22 is formed of a steel material (for example, SS material) or the like.
- the transport pan 22 has a flat body 31.
- the upper surface of the main body 31 serves as a conveyance surface 23 on which the glass raw material G dropped from the hopper 21 is placed.
- a pair of side plates 32 project from the transport surface 23 so that the glass material G on the transport surface 23 does not slide down in a direction perpendicular to the transport direction.
- the conveyance surface 22 of the conveyance pan 22 is an inclined surface, the front end portion 22a is introduced from the material input port 13 so that the glass raw material G is introduced into the melting tank 14 even if the glass material G slides down due to the inclination. It is always inserted into the glass melting furnace 11. For this reason, the conveyance pan 22 is heated by the radiant heat from the glass melting furnace 11.
- the raw material supply apparatus 10 has a cooling means for cooling the transport pan 22.
- the cooling means for example, there is a refrigerant path 33 provided inside the transport pan 22. By causing the refrigerant to flow through the refrigerant path 33, the conveyance pan 22 can be cooled, and the temperature rise of the glass raw material G on the conveyance surface 23 can be suppressed.
- a boron compound is mixed and used for the glass raw material G of the glass substrate for display.
- boric acid H 3 BO 3
- This boric acid is a hydrate and releases water of hydration when heated.
- boric acid although it is possible to use anhydrous boric acid obtained by heating boric acid (B 2 O 3), the production cost is high.
- the glass raw material G contains a hydrate
- the conveyance pan 22 is heated by the radiant heat from the glass melting furnace 11
- the glass raw material G on the conveyance surface 23 is heated and releases hydrated water.
- the fluidity of the glass raw material G on the conveying surface 23 deteriorates (decreases), so there is a possibility that the glass raw material G is put into the melting tank 14 as a lump, and the glass raw material G is stably and constant in the melting tank 14. It is difficult to throw in quantities.
- the glass raw material G thrown into the melting tank 14 is heated and melted from the outside by flame heat, radiant heat, and heat transfer from the molten glass L in the glass melting furnace 11, when thrown as a lump, Large bubbles are trapped. Air bubbles can be defects in the glass plate being manufactured.
- the glass raw material G consists of several types of raw materials from which melting
- the inside of the transport pan 22 is cooled to suppress the temperature rise of the glass raw material G on the transport surface 23, so that the alteration of the glass raw material G (release of hydrated water from the glass raw material G) ) Can be suppressed.
- the deterioration (decrease) of the fluidity of the glass raw material G on the conveyance surface 23 can be suppressed, and the glass raw material G can be stably fed into the melting tank 14 by a certain amount.
- the transport pan 22 is configured to be capable of reciprocating between an upstream end (retreat position) in the transport direction and a downstream end (forward position) in the transport direction.
- the transport pan 22 has a plurality of wheels 34 that can travel on a pair of guide rails 26.
- the guide rail 26 is supported by the frame 27, and guides the transport pan 22 toward the front of the glass melting furnace 11. For this reason, the conveyance surface 23 of the conveyance pan 22 is an inclined surface that falls forward toward the inside of the glass melting furnace 11.
- each raw material supply device 10 has a motor 41 fixed to the frame 27, a rotary disk 42 attached to the rotary shaft of the motor 41, A rod 43 is provided. One end of the rod 43 is rotatably connected to the eccentric position of the rotating disk 42. The other end of the rod 43 is rotatably connected to the transport pan 22.
- the motor 41 is connected to a control device 28 such as a computer.
- a control device 28 such as a computer.
- one end of the rod 43 rotates around the rotation center of the rotating disk 42. Accordingly, the other end of the rod 43 swings, and the transport pan 22 connected to the other end of the rod 43 reciprocates on the guide rail 26.
- the stroke amount of the transport pan 22 (movement distance between the upstream end in the transport direction and the downstream end in the transport direction) is appropriately set according to the shape of the raw material inlet 13 and the like, but is 80 mm to 150 mm.
- the thickness is preferably 100 mm to 120 mm.
- Each raw material supply apparatus 10 includes, as an adjustment mechanism for adjusting the relative position between the guide rail 26 and the melting tank 14, for example, as shown in FIG. 3, a movable carriage 51 and a lifting device 52 mounted on the movable carriage 51.
- the movable carriage 51 is configured to be able to travel in a direction toward and away from the glass melting furnace 11 (melting tank 14).
- the lifting device 52 includes a support portion 53 that supports the frame 27 from the lower surface side, and a drive device 54 that lifts and lowers the support portion 53.
- the driving device 54 for example, a hydraulic jack can be used.
- the cutter 24 is formed of a steel material (for example, SS material) or the like.
- the cutter 24 is formed in a long plate shape, and is disposed substantially vertically near the raw material inlet 13. A sharp blade portion may be provided at the lower end portion of the cutter 24.
- the cutter 24 moves between a standby position above the glass raw material G on the conveying surface 23 and an insertion position where the glass raw material G on the conveying surface 23 is inserted. Possible configuration.
- the lower surface 24 a of the cutter 24 is positioned above the glass raw material G on the transport surface 23. Therefore, at the standby position, the cutter 24 allows the movement of the glass material G on the transport surface 23.
- the standby position is appropriately set according to the thickness of the glass material G on the transport surface 23 and the like.
- the lower surface 24a of the cutter 24 may be in contact with the transport surface 23 or may form a slight gap with the transport surface 23. Further, at the insertion position, both side surfaces 24 b of the cutter 24 form a slight gap with each of the pair of side plates 32 of the transport pan 22. Accordingly, at the insertion position, the cutter 24 restricts the movement of the glass raw material G on the conveyance surface 23.
- Each raw material supply apparatus 10 has an actuator 61, a first link 62, and a second as a moving mechanism 60 that moves the cutter 24 between the standby position and the insertion position, for example, as shown in FIGS.
- a link 63 is provided.
- the actuator 61 is for rotating the first link 62.
- the actuator 61 includes an air cylinder or a hydraulic cylinder, and includes a cylinder 61a and a piston 61b that can slide in the cylinder 61a.
- the base end portion of the cylinder 61 a is rotatably connected to the outer surface of the hopper 21.
- the tip of the piston 61b is rotatably connected to one end of the first link 62.
- the base end portion of the cylinder 61a is rotatably connected to the hopper 21.
- the base end portion of the cylinder 61a may be rotatably connected to one end portion of the first link 62.
- the tip of the piston 61b is rotatably connected to the hopper 21.
- the actuator 61 can rotate the first link 62.
- the first link 62 has a longitudinal intermediate portion 62a pinned to the outer surface of the hopper 21, and can rotate around the pin.
- the other end of the first link 62 is rotatably connected to one end of the second link 63.
- the second link 63 is inserted into the opening 18 provided in the dustproof plate 16 so as to be able to enter and exit.
- the dustproof plate 16 is provided with an accordion-like stretchable cover 19 for preventing the glass raw material G from scattering from the opening 18.
- the extendable cover 19 covers one end of the second link 63 and expands and contracts with the movement of the second link 63.
- the other end of the second link 63 is connected to the upper surface of the cutter 24.
- the pressure source of the actuator 61 is connected to the control device 28.
- the first link 62 rotates in one direction (counterclockwise in FIGS. 5 and 8) or the other direction (clockwise in FIGS. 5 and 8) by the expansion and contraction of the actuator 61.
- the second link 63 moves, and the cutter 24 moves upward or downward.
- the operations of the first to fourth steps described later are repeatedly executed at predetermined intervals (for example, cycles of 1 minute to 10 minutes) under the control of the control device 28.
- the cutter 24 is raised from the insertion position to the standby position with the transport pan 22 stopped at the retracted position.
- the lower surface of the cutter 24 is positioned above the glass raw material G on the transport surface 23.
- the transport pan 22 advances from the retracted position to the advanced position with the cutter 24 stopped at the standby position. Accordingly, the conveyance surface 23 moves forward, so that the glass material G is sent out (dropped) to the conveyance surface 23 from the gap 25 between the conveyance surface 23 and the hopper outlet 21b. In addition, while the conveyance pan 22 moves forward, the glass raw material G on the conveyance surface 23 is stably placed on the conveyance surface 23 by friction.
- the front end portion 22a of the transport pan 22 moves the glass raw material G floating on the molten glass L in the melting tank 14 to the downstream side of the melting tank 14 (clarification tank 15). To the side) and move it. Thereby, the space for throwing in the glass raw material G on the conveyance pan 22 is securable.
- the glass raw material G on the transport pan 22 is introduced without securing a space, the glass raw material G introduced this time is deposited on the glass raw material G floating on the molten glass L introduced last time. It takes longer to melt.
- the glass raw material G which floats on the molten glass L moves to the downstream side (clarification tank 15 side) of the melting tank 14 as mentioned above, it can keep away from the low temperature raw material input port 13, and the glass raw material G Are sequentially sent out to the high temperature downstream side, so that melting of the glass raw material G is promoted.
- the height T (see FIG. 7) of the glass raw material G (including the portion sinking below the liquid surface of the molten glass L) moved to the downstream side by the front end portion 22a of the transport pan 22 is 50 mm to 200 mm. Is more preferably 70 to 150 mm, and particularly preferably 80 to 100 mm.
- the front end 22a of the transport pan 22 may come into contact with the molten glass L in the melting tank 14.
- the height T is higher than 200 mm, it is difficult to effectively melt the glass raw material G.
- the bar is drawn from the glass raw material G in the vertical direction, and the portion of the undissolved glass raw material G adhering to the rod is measured. The method of doing is illustrated.
- the cutter 24 is lowered from the standby position to the insertion position with the transport pan 22 stopped at the forward movement position.
- the cutter 24 is inserted into the glass raw material G on the conveyance surface 23.
- the lower surface of the cutter 24 is in contact with the conveyance surface 23 or slightly above the conveyance surface 23, so that the movement of the glass raw material G on the conveyance surface 23 is restricted. Is done.
- the transport pan 22 moves backward from the forward movement position to the backward movement position with the cutter 24 stopped at the insertion position. Then, the cutter 24 stopped at the insertion position relatively pushes out at least a part of the glass raw material G downstream of the cutter 24 in the transport direction from the transport surface 23 and drops it onto the melting tank 14.
- the glass raw material G is stably supplied to the glass melting furnace 11 by a certain amount (for example, 0.3 ton / hour). ⁇ 1.3 tons / hour, preferably 0.5 tons / hour to 1.0 tons / hour).
- the cutter 24 pushes out at least a part of the glass raw material G from the conveying surface 23 as the conveying pan 22 moves backward, and drops it onto the melting tank 14. Even when the property is deteriorated (decreased), the glass raw material G can be stably fed into the glass melting furnace 11 by a fixed amount.
- the front end portion 22 a of the transport pan 22 moves the glass raw material G floating on the molten glass L in the melting tank 14 to the downstream side of the melting tank 14 as the transport pan 22 advances. Therefore, a space for charging the glass material G on the transport pan 22 can be secured. Moreover, the glass raw material G which floats on the molten glass L in the melting tank 14 can be kept away from the low temperature raw material inlet 13, and it can prevent that the time until it melts becomes long.
- the conveyance pan 22 is cooled by the refrigerant path 33, the temperature rise of the glass raw material G on the conveyance surface 23 can be suppressed, and the quality change (from the glass raw material G of glass raw material G) can be suppressed. Release of water of hydration).
- a plurality of (for example, two) raw material supply apparatuses 10 are installed side by side in the glass melting furnace 11, but only one may be installed.
- the transport pan 22 moves forward from the retracted position to the advanced position with the cutter 24 stopped at the standby position, but the present invention is not limited to this.
- the transport pan 22 may advance from the retracted position to the advanced position while the cutter 24 is raised from the insertion position to the standby position.
- the transport pan 22 in the fourth step, is retracted from the advance position to the retract position with the cutter 24 stopped at the insertion position, but the present invention is not limited to this.
- the transport pan 22 may be retracted from the advance position to the retract position while the cutter 24 is lowered from the standby position to the insertion position.
- dry air may be blown into the hopper 21 and further into the upstream material silo (not shown).
- the present invention can also be applied to glass raw materials that do not contain hydrates.
- the present invention it is possible to provide a raw material supply method and a raw material supply device, and a glass plate manufacturing apparatus and manufacturing method capable of stably feeding a glass raw material on a conveying surface into a glass melting furnace in a fixed amount. it can.
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Abstract
Description
ガラス原料をホッパーから搬送パンに投下し、該搬送パンを往復移動して該搬送パンの搬送面上のガラス原料をガラス溶融炉の溶融槽へ投入する原料供給方法において、
前記搬送パンが搬送方向上流端から搬送方向下流端へ前進するとき、前記搬送面上のガラス原料に刺入可能なカッターが前記搬送面上のガラス原料よりも上方の待機位置に移動し、
前記搬送パンが搬送方向下流端から搬送方向上流端へ後退するとき、前記カッターが前記搬送面上のガラス原料への刺入位置に移動し、前記搬送パンの後退と共に前記刺入位置で停止したカッターが該カッターよりも搬送方向下流側のガラス原料の少なくとも一部分を前記搬送パンから相対的に押し出し、前記溶融槽に投入する。
ホッパーから投下されたガラス原料を搬送する搬送パンを有し、該搬送パンを往復移動して該搬送パンの搬送面上のガラス原料をガラス溶融炉の溶融槽へ投入する原料供給装置において、
前記搬送面上のガラス原料に刺入可能なカッターを備え、
前記搬送パンが搬送方向上流端から搬送方向下流端へ前進するとき、前記カッターが前記搬送面上のガラス原料よりも上方の待機位置に移動し、
前記搬送パンが搬送方向下流端から搬送方向上流端へ後退するとき、前記カッターが前記搬送面上のガラス原料への刺入位置に移動し、前記搬送パンの後退と共に前記刺入位置で停止したカッターが該カッターよりも搬送方向下流側のガラス原料の少なくとも一部分を前記搬送パンから相対的に押し出し、前記溶融槽に投入する。
本発明の原料供給装置と、該原料供給装置によって供給されたガラス原料を溶融するガラス溶融炉と、該ガラス溶融炉で溶融された溶融ガラスを板状ガラスに成形する成形炉とを有する。
本発明のガラス板の製造装置を用いて、ガラス板を製造する。
本出願は、2009年6月22日出願の日本特許出願2009-148058に基づくものであり、その内容はここに参照として取り込まれる。
11 ガラス溶融炉
12 成形炉
13 原料投入口
14 溶融槽
21 ホッパー
22 搬送パン
23 搬送面
24 カッター
Claims (10)
- ガラス原料をホッパーから搬送パンに投下し、該搬送パンを往復移動して該搬送パンの搬送面上のガラス原料をガラス溶融炉の溶融槽へ投入する原料供給方法において、
前記搬送パンが搬送方向上流端から搬送方向下流端へ前進するとき、前記搬送面上のガラス原料に刺入可能なカッターが前記搬送面上のガラス原料よりも上方の待機位置に移動し、
前記搬送パンが搬送方向下流端から搬送方向上流端へ後退するとき、前記カッターが前記搬送面上のガラス原料への刺入位置に移動し、前記搬送パンの後退と共に前記刺入位置で停止したカッターが該カッターよりも搬送方向下流側のガラス原料の少なくとも一部分を前記搬送パンから相対的に押し出し、前記溶融槽に投入する原料供給方法。 - 前記搬送パンが搬送方向上流端から搬送方向下流端へ前進するとき、前記搬送パンの前端部が前記溶融槽内の溶融ガラス上に浮遊するガラス原料を前記溶融槽の下流側へ移動させる請求項1記載の原料供給方法。
- 前記ガラス原料は、水和物を含む請求項1又は2記載の原料供給方法。
- 前記水和物は、ホウ酸(H3BO3)である請求項3記載の原料供給方法。
- 前記搬送パンを冷却する請求項1~4いずれか一項記載の原料供給方法。
- ホッパーから投下されたガラス原料を搬送する搬送パンを有し、該搬送パンを往復移動して該搬送パンの搬送面上のガラス原料をガラス溶融炉の溶融槽へ投入する原料供給装置において、
前記搬送面上のガラス原料に刺入可能なカッターを備え、
前記搬送パンが搬送方向上流端から搬送方向下流端へ前進するとき、前記カッターが前記搬送面上のガラス原料よりも上方の待機位置に移動し、
前記搬送パンが搬送方向下流端から搬送方向上流端へ後退するとき、前記カッターが前記搬送面上のガラス原料への刺入位置に移動し、前記搬送パンの後退と共に前記刺入位置で停止したカッターが該カッターよりも搬送方向下流側のガラス原料の少なくとも一部分を前記搬送パンから相対的に押し出し、前記溶融槽に投入する原料供給装置。 - 前記搬送パンが搬送方向上流端から搬送方向下流端へ前進するとき、前記搬送パンの前端部が前記溶融槽内の溶融ガラス上に浮遊するガラス原料を前記溶融槽の下流側へ移動させる請求項6記載の原料供給装置。
- 前記搬送パンを冷却する冷却手段を更に有する請求項6又は7記載の原料供給装置。
- 請求項6~8いずれか一項記載の原料供給装置と、該原料供給装置によって供給されたガラス原料を溶融するガラス溶融炉と、該ガラス溶融炉で溶融された溶融ガラスを板状ガラスに成形する成形炉とを有するガラス板の製造装置。
- 請求項9記載のガラス板の製造装置を用いて、ガラス板を製造するガラス板の製造方法。
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Cited By (11)
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WO2012026254A1 (ja) * | 2010-08-27 | 2012-03-01 | 旭硝子株式会社 | 原料供給装置および原料供給方法、ならびにガラス板の製造装置および製造方法 |
JP2016159474A (ja) * | 2015-02-27 | 2016-09-05 | 新和建設工業株式会社 | コンクリートの現場練り製造ユニット |
JP2017202956A (ja) * | 2016-05-12 | 2017-11-16 | 日本電気硝子株式会社 | 原料供給装置及びガラス製造装置 |
JP2019502636A (ja) * | 2015-12-18 | 2019-01-31 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | マルチチャンバ炉内での石英ガラス体の調製 |
US11236002B2 (en) | 2015-12-18 | 2022-02-01 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of an opaque quartz glass body |
US11299417B2 (en) | 2015-12-18 | 2022-04-12 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a quartz glass body in a melting crucible of refractory metal |
US11339076B2 (en) | 2015-12-18 | 2022-05-24 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of carbon-doped silicon dioxide granulate as an intermediate in the preparation of quartz glass |
US11492285B2 (en) | 2015-12-18 | 2022-11-08 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of quartz glass bodies from silicon dioxide granulate |
US11492282B2 (en) | 2015-12-18 | 2022-11-08 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of quartz glass bodies with dew point monitoring in the melting oven |
CN115417579A (zh) * | 2022-07-19 | 2022-12-02 | 彩虹(合肥)液晶玻璃有限公司 | 一种投料机定位固定装置 |
US11952303B2 (en) | 2015-12-18 | 2024-04-09 | Heraeus Quarzglas Gmbh & Co. Kg | Increase in silicon content in the preparation of quartz glass |
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KR20160087626A (ko) | 2015-01-14 | 2016-07-22 | 부산외국어대학교 산학협력단 | 수중관측을 위한 탐사동력장치 및 이를 이용한 운항방법 |
KR101772840B1 (ko) | 2017-01-06 | 2017-08-30 | 부산외국어대학교 산학협력단 | 수중관측을 위한 탐사동력장치의 운항방법 |
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WO2012026254A1 (ja) * | 2010-08-27 | 2012-03-01 | 旭硝子株式会社 | 原料供給装置および原料供給方法、ならびにガラス板の製造装置および製造方法 |
JP5817729B2 (ja) * | 2010-08-27 | 2015-11-18 | 旭硝子株式会社 | 原料供給装置および原料供給方法、ならびにガラス板の製造装置および製造方法 |
JP2016159474A (ja) * | 2015-02-27 | 2016-09-05 | 新和建設工業株式会社 | コンクリートの現場練り製造ユニット |
US11492285B2 (en) | 2015-12-18 | 2022-11-08 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of quartz glass bodies from silicon dioxide granulate |
JP2019502636A (ja) * | 2015-12-18 | 2019-01-31 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | マルチチャンバ炉内での石英ガラス体の調製 |
US11236002B2 (en) | 2015-12-18 | 2022-02-01 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of an opaque quartz glass body |
JP7048053B2 (ja) | 2015-12-18 | 2022-04-05 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | マルチチャンバ炉内での石英ガラス体の調製 |
US11299417B2 (en) | 2015-12-18 | 2022-04-12 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a quartz glass body in a melting crucible of refractory metal |
US11339076B2 (en) | 2015-12-18 | 2022-05-24 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of carbon-doped silicon dioxide granulate as an intermediate in the preparation of quartz glass |
US11492282B2 (en) | 2015-12-18 | 2022-11-08 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of quartz glass bodies with dew point monitoring in the melting oven |
US11708290B2 (en) | 2015-12-18 | 2023-07-25 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a quartz glass body in a multi-chamber oven |
US11952303B2 (en) | 2015-12-18 | 2024-04-09 | Heraeus Quarzglas Gmbh & Co. Kg | Increase in silicon content in the preparation of quartz glass |
JP2017202956A (ja) * | 2016-05-12 | 2017-11-16 | 日本電気硝子株式会社 | 原料供給装置及びガラス製造装置 |
CN115417579A (zh) * | 2022-07-19 | 2022-12-02 | 彩虹(合肥)液晶玻璃有限公司 | 一种投料机定位固定装置 |
CN115417579B (zh) * | 2022-07-19 | 2023-08-01 | 彩虹(合肥)液晶玻璃有限公司 | 一种投料机定位固定装置 |
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KR20120031951A (ko) | 2012-04-04 |
JP5614403B2 (ja) | 2014-10-29 |
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