CN117383797A

CN117383797A - Glass manufacturing apparatus and glass manufacturing method

Info

Publication number: CN117383797A
Application number: CN202311383435.4A
Authority: CN
Inventors: 杨浩鑫; 黄桃; 易池端; 侯瑞; 吴缙伟; 刘家成; 肖清亮
Original assignee: CDGM Glass Co Ltd
Current assignee: CDGM Glass Co Ltd
Priority date: 2023-10-24
Filing date: 2023-10-24
Publication date: 2024-01-12

Abstract

The present application relates to a glass manufacturing apparatus and a glass manufacturing method, the glass manufacturing apparatus including: clarification equipment, agitating unit and guiding device. The fining apparatus is provided with a fining bath for injecting molten glass. The stirring device is provided with a stirring homogenization pool. The flow guiding device is connected between the clarification device and at least two stirring devices; the flow guiding device is provided with an inner flow passage which is communicated between the clarifying tank and the stirring homogenizing tank; wherein the output molding flow of one stirring device is a first flow value or a second flow value, and the first flow value is less than the second flow value by a variable difference value; the total output molding flow of the other stirring devices is the sum of the basic flow value and the variable difference value. Therefore, the feeding amount and the discharging amount of the glass manufacturing equipment can be kept consistent, and stable technological parameters are facilitated to be obtained. Therefore, the optical constants and the internal quality of all glass strips produced in the transition process can meet the standard requirements, and waste products and stock generated in the transition process of manufacturing specification switching are avoided.

Description

Glass manufacturing apparatus and glass manufacturing method

Technical Field

The application relates to the technical field of glass production, in particular to glass manufacturing equipment and a glass manufacturing method.

Background

Part of optical glass is manufactured by adopting a one-time continuous smelting and continuous forming mode, and glass manufacturing equipment is produced by the process steps of powder melting, high-temperature clarification, stirring homogenization, strip forming, annealing and the like. In the production process, the required feeding amount is consistent with the required discharging amount, and technological parameters such as stabilizing material, clarifying, homogenizing temperature and the like are formed on the basis, so that the optical constant, the internal quality and the like of the glass meet the standard requirements.

When large-size glass strips and general-size glass strips are produced on the same glass manufacturing equipment, the large-size glass strips have larger differences from the general-size glass strips in thickness and width, and in the transition process between the large-size glass strips production and the general-size glass strips production, the glass manufacturing equipment needs to carry out larger adjustment on the feeding amount, the discharging amount and the smelting process parameters. Because glass manufacturing equipment is required to be in a continuous running state all the time and is influenced by changing factors such as the feeding amount, the optical constant and the internal quality of glass strips produced in the transition process are difficult to ensure, and more waste products and stores are generated in the transition process.

Disclosure of Invention

Based on this, it is necessary to provide a glass manufacturing apparatus and a glass manufacturing method for solving the problems that the optical constants and the internal quality of the produced glass gob are difficult to be ensured in the transition process between the production of large-sized glass gob and the production of general-sized glass gob, and more waste and stock are generated in the transition process.

A glass manufacturing apparatus comprising:

the clarification device is provided with a clarification tank for injecting glass liquid;

the stirring device is provided with a stirring homogenization pool;

the flow guiding device is connected between the clarification equipment and at least two stirring devices; the flow guiding device is provided with an inner flow passage which is communicated between the clarifying tank and the stirring homogenizing tank; wherein the output molding flow of the stirring device is a first flow value or a second flow value, and the first flow value is less than the second flow value by a variable difference value; the output molding flow of the other stirring devices is an basic flow value or a superposition flow value; the superimposed flow value is the sum of the base flow value and the variable difference value.

According to the glass manufacturing equipment, after the glass liquid is injected into the clarifying tank of the clarifying equipment, the glass liquid is clarified at a high temperature in the clarifying tank, so that the internal composition, bubbles or stones and the like of the glass liquid are refined, and the internal quality of the glass liquid is improved. The glass liquid in the clarifying tank is split into more than two stirring devices by the flow guiding device. One of the stirring devices is designated for making large-format glass strands or general-format glass strands. When the glass strip material with the general specification is manufactured, the forming capability and forming stripes of the glass are easy to control, and the output forming flow is not required to be excessively limited. When the device is used for producing the glass strips with the general specification, the output molding flow of the designated flow guiding device is a second flow value which is higher than the first flow value, so that the production efficiency of the glass strips with the general specification is ensured. In the manufacture of large-format glass frits, the output molding flow needs to be kept low to more reliably avoid the occurrence of molding streaks. The output forming flow of the designated stirring device is reduced from the second flow value to the relatively lower first flow value, so that the manufactured large-size glass strip meets the standard requirement. In the process that the output molding flow of the designated stirring device is reduced from the second flow value to the first flow value, the molten glass corresponding to the variable difference value is output from the rest stirring devices, so that the feeding amount and the discharging amount of the glass manufacturing equipment are kept consistent, and stable process parameters are facilitated to be obtained. The rest stirring devices are used for generating glass strips with common specifications, so that the quality is not obviously reduced due to the rising or falling of the output forming flow, the optical constants and the internal quality of all the glass strips produced in the transition process can meet the standard requirements, and waste products and stock are avoided in the transition process of manufacturing specification switching.

In one embodiment, the flow guiding device comprises a split flow body, an input conduit and a plurality of output conduits; the split fluid, the input conduit and the output conduit respectively form the outer boundary of the inner runner; the shunt body is provided with a shunt inner cavity; the input conduit is communicated between the clarification tank and the diversion cavity; the split fluid is connected with a plurality of output pipes; the output conduit is communicated between the shunt cavity and one stirring homogenization pool.

In one embodiment, the shunt lumen is inverted hemispherical in shape; and/or the upper boundary of the diversion cavity is lower than the rated liquid level of the clarification tank.

In one embodiment, the length of each of the output conduits is uniform.

In one embodiment, the stirring device is provided with a discharge pipe which is communicated with the stirring homogenization tank; the stirring device further comprises a heating piece connected to the discharging pipe; the heating element is used for transferring heat to the molten glass in the discharging pipe.

In one embodiment, the stirring device further comprises a control module, wherein the control module is connected to the heating element of each stirring device; the control module is used for adjusting the heating power of the heating element.

In one embodiment, the device further comprises a plurality of forming devices and a plurality of annealing furnaces; the molding devices are correspondingly connected with the stirring devices one by one; the annealing furnaces are correspondingly connected to the forming devices one by one.

A method for manufacturing glass, which comprises the steps of,

outputting glass liquid from the fining pool to at least two stirring devices according to a preset flow rate;

the output molding flow of one stirring device is downwards regulated from a second flow value to a first flow value;

and (3) the output molding flow of the other stirring devices is adjusted upwards, and the size of the up-adjustment amount corresponds to the down-adjustment amount of the output molding flow of one stirring device.

In one embodiment, at any time, the sum of the output molding flow rate of one of the stirring devices and the output molding flow rates of the other stirring devices is made equal to the predetermined flow rate.

In one embodiment, the first flow value is set according to the size of one of the stirring device forming specifications and the streak risk assessment.

A method for manufacturing glass, which comprises the steps of,

the output molding flow of one stirring device is adjusted upwards from a first flow value to a second flow value;

the size of the downward adjustment amount of the output molding flow of the rest stirring devices corresponds to the upward adjustment amount of the output molding flow of one stirring device.

In one embodiment, the molten glass is output from the fining bath to two stirring devices at the predetermined flow rate; in the process that the output molding flow of one stirring device is adjusted upwards from the first flow value to the second flow value, the output molding flow of the other stirring device is adjusted downwards, and the size of the adjusted downwards corresponds to the adjusted upwards amount of the output molding flow of one stirring device.

Drawings

FIG. 1 is a top view of a glass manufacturing apparatus according to one embodiment of the present application.

FIG. 2 is a partial side view of the glass manufacturing apparatus shown in FIG. 1.

Fig. 3 is a partial top view of the deflector shown in fig. 1.

Fig. 4 is a partial rear view of the deflector shown in fig. 1.

FIG. 5 is a schematic flow chart of a glass manufacturing method according to an embodiment of the present application.

FIG. 6 is a schematic flow chart of a glass manufacturing method according to another embodiment of the present application.

Reference numerals: 100. a glass manufacturing apparatus; 20. a smelting furnace; 21. a melting tank; 22. a guide tube; 30. a clarification device; 31. a clarification tank; 40. a stirring device; 41. stirring and homogenizing the pool; 42. a discharge pipe; 43. stirring paddles; 50. a flow guiding device; 51. a split flow; 52. an input conduit; 53. an output conduit; 60. a molding device; 70. and (5) an annealing furnace.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either directly in contact or indirectly through intervening media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

The following describes the technical scheme provided by the embodiment of the application with reference to the accompanying drawings.

As shown in connection with fig. 1-4, the present application provides a glass manufacturing apparatus 100.

In some embodiments, the glass manufacturing apparatus 100 is used to manufacture glass frits. Further, the glass manufacturing apparatus 100 is used to manufacture large-format glass frits and general-format glass frits. In some embodiments, the large format glass ribbon has a cross-sectional width of no less than 200mm and a cross-sectional height of no less than 40mm. In some embodiments, the cross-sectional width of the common gauge glass frit is no greater than 160mm and the cross-sectional height is no greater than 15mm.

In some embodiments, the glass manufacturing apparatus 100 receives an injection of a flowable glass liquid, and utilizes the glass liquid to manufacture a glass ribbon. In some embodiments, the glass liquid contains volatile components to produce glass strands with excellent optical properties.

In some embodiments, as shown in connection with fig. 1 and 2, glass manufacturing apparatus 100 includes: clarification device 30, stirring device 40 and diversion device 50. The fining apparatus 30 is provided with a fining bath 31 for injecting molten glass. The stirring device 40 is provided with a stirring homogenization tank 41. The deflector 50 is connected between the clarification device 30 and the at least two stirring devices 40. The deflector 50 is provided with an inner flow passage which is communicated between the clarifier 31 and the stirring homogenizing tank 41. The output molding flow of one of the stirring devices 40 is a first flow value or a second flow value, and the first flow value is less than the second flow value by a variable value. The total output molding flow rate of the remaining stirring devices 40 is a basic flow rate value or a superimposed flow rate value. The superimposed flow value is the sum of the base flow value and the variable difference value.

Specifically, after the molten glass is injected into the fining pool 31 of the fining apparatus 30, the molten glass is subjected to high-temperature fining in the fining pool 31, so that the internal composition, bubbles or stones and the like of the molten glass are refined, and the internal quality of the molten glass is improved. The molten glass in the refining tank 31 is split by the flow guide device 50 to more than two stirring devices 40. One of the stirring devices 40 is designated for manufacturing large-sized glass strands or general-sized glass strands. When the glass strip material with the general specification is manufactured, the forming capability and forming stripes of the glass are easy to control, and the output forming flow is not required to be excessively limited. When the device is used for producing the glass strips of the general specification, the output forming flow of the designated flow guiding device 50 is a second flow value which is higher than the first flow value, so that the production efficiency of the glass strips of the general specification is ensured. In the manufacture of large-format glass frits, the output molding flow needs to be kept low to more reliably avoid the occurrence of molding streaks. The output forming flow of the designated stirring device 40 is reduced from the second flow value to the relatively lower first flow value, ensuring that the manufactured large-sized glass ribbon meets the standard requirements. In the process that the output molding flow rate of the specified stirring device 40 is reduced from the second flow rate value to the first flow rate value, the molten glass corresponding to the variable difference value is output from the remaining stirring devices 40, so that the feeding amount and the discharging amount of the glass manufacturing apparatus 100 can be kept consistent, which is advantageous in obtaining stable process parameters. Since the remaining stirring device 40 is used for generating the glass ribbon of the general specification, the quality is not obviously reduced due to the rising or falling of the output molding flow, so that the optical constants and the internal quality of all the glass ribbon produced in the transition process can meet the standard requirements, and the waste and the stock generated in the transition process of the manufacturing specification switching are avoided.

In some embodiments, when the output shaping flow of a given stirring device 40 is the second flow value, the output shaping flow of the remaining stirring devices 40 is the base flow value, and any remaining stirring devices 40 can be discharged at a lower rate to produce a general-sized glass ribbon with relatively lower efficiency. When the output molding flow of the specified stirring device 40 is the first flow value, the output molding flow of the other stirring devices 40 is the superposition flow value, so that the speed discharge of any stirring device 40 can be improved, and the other stirring devices 40 can produce glass strips with general specifications with relatively high efficiency.

In other embodiments, the basic flow value is zero, i.e., the remaining stirring devices 40 cease to output when the output shaping flow of the specified stirring device 40 is used to make a normal-sized glass ribbon, and the remaining stirring devices 40 begin to be commissioned and the output shaping flow is of a superimposed flow value when the output shaping flow of the specified stirring device 40 is used to make a large-sized glass ribbon. More specifically, the magnitude of the superimposed flow value at this time is equal to the variable difference value. Specifically, the second flow value is any flow value that is greater than the first flow value.

In some embodiments, as shown in connection with FIG. 2, the stirring device 40 is provided with a discharge pipe 42, the discharge pipe 42 being in communication with the stirring homogenization tank 41. The stirring device 40 further comprises a heating element connected to the tapping pipe 42. The heating element is used to transfer heat to the molten glass in the tapping pipe 42. Specifically, when the power of the heating element is large, the temperature of the molten glass in the tapping pipe 42 is high. Since the viscosity of the molten glass decreases with an increase in temperature and the fluidity of the molten glass increases, the output molding flow rate of the stirring device 40 can be adjusted by controlling the heating power of the heating element and adjusting the temperature of the molten glass in the discharge pipe 42. In one embodiment, the heating elements are distributed around the periphery of the tapping pipe 42 in order to increase the temperature uniformity of the molten glass within the tapping pipe 42.

In some embodiments, as shown in connection with fig. 2, the stirring device 40 further includes a stirring driver and a stirring blade 43 disposed in the stirring and homogenizing tank 41, where the stirring driver drives the stirring blade 43 to rotate, so that the internal uniformity of the molten glass in the stirring and homogenizing tank 41 is significantly improved. Specifically, the agitation driver is a motor. In some embodiments, the discharge pipe 42 is provided in communication with the lower portion of the stirring homogenization tank 41.

In some embodiments, the glass manufacturing apparatus 100 further includes a control module coupled to the heating element of each stirring device 40. The control module is used for adjusting the heating power of the heating element. Specifically, the control module adjusts the heating power of the heating element to change the fluidity of the glass liquid in the discharge pipe 42. The coordination of the control module to the heating elements of each stirring device 40 can enable the output molding flow of different stirring devices 40 to be matched, and the constant flow glass liquid flowing out of the clarification tank 31 is reasonably distributed among the stirring devices 40, so that the consistent feeding amount and the consistent discharging amount of the glass manufacturing equipment 100 are realized.

In some embodiments, as shown in connection with fig. 1, 3 and 4, the flow guiding device 50 comprises a split flow 51, an input conduit 52 and a plurality of output conduits 53. The split flow body 51, the input conduit 52 and the output conduit 53 each form an outer boundary of the inner flow path. The shunt body 51 is provided with a shunt lumen. An inlet conduit 52 communicates between the clarifier 31 and the diverter lumen. The dividing body 51 is connected to a number of outlet ducts 53. The output conduit 53 communicates between the split cavity and one of the stir homogenizing tanks 41. Specifically, the glass liquid in the fining bath 31 flows into the input conduit 52 and flows along the internal flow path in the input conduit 52 into the diversion cavity of the diversion body 51. The glass liquid in the shunt inner cavity respectively enters the ports of each output conduit 53 and then respectively flows into the corresponding stirring homogenization pool 41 along each output conduit 53, thereby realizing the shunt of the glass liquid. More specifically, the shunt lumen is one of the sections of the inner flow passage.

In some embodiments, there is a difference between the set temperature of the fining bath 31 and the set temperature of the stir homogenizing bath 41, and the glass gradually cools during flow along either the input conduit 52 or the output conduit 53, thereby enabling the glass to accommodate the temperature difference between the fining bath 31 and the stir homogenizing bath 41.

In some embodiments, the inner diameter of the shunt lumen is greater than the inner diameter of either the input catheter 52 or the output catheter 53. In other embodiments, the ends of the input conduit 52 may also be directly in communicative abutment with the ends of the several output conduits 53.

In some embodiments, the upper boundary of the shunt lumen is below the rated level of the fining bath 31, thereby enabling the glass liquid to fully fill the shunt lumen, avoiding volatilization of the glass liquid in the shunt lumen in the presence of volatile components, and preventing the optical constants or internal quality of the glass ribbon from being affected. Specifically, the upper boundary of the diversion cavity is also below the liquid level of the stirring homogenization tank 41.

In some embodiments, the shunt lumen is inverted hemispherical in shape. Specifically, the shape of the shunt cavity is in an inverted hemispherical shape, so that the bottom wall of the shunt cavity is basically free of stress concentration points, and the mechanical strength of shunt is improved. The upper boundary of the shunt lumen is planar and advantageously substantially flush with the upper edge of the inner periphery of the input conduit 52. When the glass liquid contains volatile components, the upper boundary of the shunt inner cavity is basically kept at the same level with the upper edge of the inner periphery of the input conduit 52, the glass liquid can fully contact with the upper boundary of the shunt inner cavity, a vacuum area is avoided being formed in the shunt inner cavity, volatile matters are prevented from being adsorbed by the glass liquid with volatile marks in the vacuum area, and the glass liquid is prevented from being firmly initiated due to falling of the volatile matters and finally scrapped. In addition, when the shape of the shunt cavity is in an inverted hemispherical shape, the impact and vortex generated by glass in the flowing process can be reduced, and the glass liquid is prevented from obviously rotating in the shunt cavity.

Further, when the shape of the split inner cavity is in an inverted hemispherical shape, the outer part of the split body 51 is also in an inverted hemispherical shape, which is beneficial to the installation and maintenance of the heating structure outside the split body 51.

In some embodiments, the length of each output conduit 53 is uniform, thereby allowing the glass to flow the same distance between any stir homogenizing bath 41 and the split 51, facilitating uniform cooling adjustments of glass flowing to different stir homogenizing baths 41. Further, when the output duct 53 is straight, the distance between any stirring device 40 and the split flow body 51 is uniform.

In some embodiments, the number of stirring devices 40 is two, and the number of output conduits 53 corresponds to the number of stirring devices 40.

In some embodiments, as shown in connection with FIG. 1, the glass manufacturing apparatus 100 further includes a number of forming devices 60 and a number of lehr 70. The molding devices 60 are connected to the stirring devices 40 in one-to-one correspondence. The annealing furnaces 70 are connected to the molding device 60 in one-to-one correspondence. Specifically, since the forming device 60 and the annealing furnace 70 are individually associated with any stirring device 40, the glass can be individually manufactured by each stirring device 40. The forming device 60 limits the flow range of the molten glass by its inner walls and molds the molten glass into a desired shape and size. After the glass flows onto the forming device 60, the temperature decreases somewhat and the viscosity increases as it moves away from the discharge tube 42, thereby forming a stable form. Further, by adjusting the size of the internal space of the molding device 60, the molten glass can be molded into a large-sized glass ribbon or a general-sized glass ribbon. The annealing furnace 70 is used to transfer proper heat to the formed glass ribbon, to make the temperature inside and outside the glass ribbon close, to eliminate the internal stress of the glass ribbon, and to avoid cracking caused by uneven cooling. The inner and outer layers of the glass strand are synchronously cooled in the lehr 70 and finally serve as product blanks. In one embodiment, the lehr 70 is a mesh belt lehr 70.

In other embodiments, the glass manufacturing apparatus 100 utilizes raw materials to produce glass strands. In some embodiments, the raw material comprises a meltable powder. In some embodiments, the raw materials include volatile components.

In some embodiments, as shown in connection with fig. 1 and 2, the glass manufacturing apparatus 100 further includes a melting furnace 20, the melting furnace 20 being provided with a melting tank 21. The melting tank 21 is used for pouring meltable powder, and the meltable powder is dissolved by high temperature in the melting tank 21 to form glass liquid initially. Further, the melter 20 also performs bubbling agitation of the meltable powder in the melting tank 21.

In some embodiments, as shown in connection with fig. 1 and 2, glass manufacturing apparatus 100 further includes a guide tube 22, guide tube 22 being in communication between melting tank 21 and fining tank 31. The primarily formed glass liquid is circulated through the guide tube 22 to the fining bath 31.

Specifically, in the manufacturing process of glass strips containing volatile components, the glass strips are subject to objective factors such as the fact that the brands contain volatile components, have weak anti-fluctuation capability, poor thermal efficiency of smelting equipment and the like, and compared with the conventional optical glass, the glass strips have more severe requirements on the stability of the smelting processes such as constant temperature, constant speed, constant current and the like, and the quality fluctuation and rejection of products are extremely easy to cause in the process adjustment process. In the forming process of the glass strip material containing the volatile components, the glass strip material containing the volatile components is manufactured under a small flow rate during large-specification forming under the conditions of low viscosity, easy volatilization, large influence of heat quantity and the like, so that the stripe yield can be ensured. Thus, large format glass frits containing volatile components are particularly required to be manufactured at or below the first flow value.

The application also provides a glass manufacturing method.

In some embodiments, as shown in connection with fig. 5, the glass manufacturing method includes the steps of:

s10: the molten glass is output from the fining bath 31 to at least two stirring devices 40 at a predetermined flow rate.

S20: the output molding flow of one of the stirring devices 40 is adjusted down from the second flow value to the first flow value.

S30: the amount of upward adjustment of the output molding flow rate of the remaining stirring devices 40 is made to correspond to the amount of downward adjustment of the output molding flow rate of one of the stirring devices 40.

Specifically, after the molten glass is injected into the clarifier 31, the molten glass is clarified at a high temperature in the clarifier 31, so that the internal composition, bubbles or stones and the like of the molten glass are refined, and the internal quality of the molten glass is improved. The molten glass in the refining vessel 31 is split into two or more stirring devices 40. One of the stirring devices 40 is used to make a general-sized glass ribbon before conditioning and to make a large-sized glass ribbon after conditioning. When the glass strip material with the general specification is manufactured, the forming capability and forming stripes of the glass are easy to control, and the output forming flow is not required to be excessively limited. When the device is used for producing the glass strips of the general specification, the output forming flow of the designated flow guiding device 50 is a second flow value which is higher than the first flow value, so that the production efficiency of the glass strips of the general specification is ensured. In the manufacture of large format glass frits, the output molding flow needs to be kept low to more reliably mold the occurrence of streaks. The output forming flow of the designated stirring device 40 is adjusted downwards from the second flow value to a relatively lower first flow value, so that the manufactured large-size glass ribbon meets the standard requirements. In the process that the output molding flow of the designated stirring device 40 is reduced from the second flow value to the first flow value, the output molding flow of the other stirring devices 40 is adjusted upwards, and the size of the up-adjustment amount corresponds to the down-adjustment amount of the output molding flow of one stirring device 40, so that the charging amount and the discharging amount are kept consistent, and stable process parameters are facilitated to be obtained. Since the remaining stirring device 40 is used for generating the glass ribbon of the general specification, the quality is not reduced due to the rising of the output forming flow, so that the optical constants and the internal quality of all the glass ribbon produced in the transition process can meet the standard requirements, and the waste and the stock generated in the transition process are avoided.

In some embodiments, the process parameters include temperature, flow rate, and flow rate.

In some embodiments, as for the output molding flow rate of the remaining stirring devices 40, it is understood that when the first stirring device 40 is used to manufacture a general-sized glass frit or a large-sized glass frit when the total number of stirring devices 40 is two as shown in fig. 1, the output molding flow rate of the remaining stirring devices 40 is the output molding flow rate of the first stirring device 40. When the total number of stirring devices 40 is three, the first stirring device 40 is used for manufacturing the glass ribbon of the general specification or the glass ribbon of the large specification, and the output molding flow rate of the other stirring devices 40 is the sum of the output molding flow rates of the second stirring device 40 and the third stirring device 40.

In some embodiments, the sum of the output molding flow rate of one of the stirring devices 40 and the output molding flow rate of the other stirring device 40 is made equal to the predetermined flow rate at any time. Specifically, since the glass liquid output from the fining pool 31 is finally output from each stirring device 40 and is shaped into glass strands, when the sum of the output shaping flow rates of each stirring device 40 is equal to the predetermined flow rate, and the output shaping flow rate of one stirring device 40 is adjusted downward, the output shaping flow rates of the other stirring devices 40 are adjusted in a compensating manner, and the glass liquid can be maintained to flow out of the fining pool 31 at the predetermined flow rate, so that the feeding amount and the discharging amount are maintained to be consistent, and stable process parameters are facilitated.

In some embodiments, the first flow value is set according to the size of the molding specification and the streak risk assessment. Specifically, the first flow value is any flow value that meets the production needs of large format glass frits. By adjusting the specific size of the first flow value according to the specific size of the large-format glass frit, the optical constant and the internal quality of the large-format glass frit can be ensured.

In some embodiments, as shown in connection with FIG. 1, molten glass is output from the fining bath 31 to two stirring devices 40 at a predetermined flow rate. During the downward adjustment of the output molding flow of one of the stirring devices 40 from the second flow value to the first flow value, the output molding flow of the other stirring device 40 is adjusted upward and the amount of the upward adjustment corresponds to the amount of the downward adjustment of the output molding flow of one of the stirring devices 40. Further, after the stirring device 40 outputs the molten glass, the molten glass is sequentially subjected to molding and annealing. Specifically, when the output molding flow rate of the stirring device 40 is specified to be adjusted down from the second flow rate value to the first flow rate value, only the output molding flow rate of the other stirring device 40 needs to be adjusted up, so that the control of the output molding flow rate of the stirring device 40 can be simplified.

In some embodiments, as shown in connection with fig. 6, the glass manufacturing method includes the steps of:

S21: the output molding flow of one of the stirring devices 40 is adjusted upward from the first flow value to the second flow value.

S31: the amount of the downward adjustment of the total output molding flow of the remaining stirring devices 40 is made to correspond to the upward adjustment of the output molding flow of one of the stirring devices 40.

Specifically, after the molten glass is injected into the clarifier 31, the molten glass is clarified at a high temperature in the clarifier 31, so that the internal composition, bubbles or stones and the like of the molten glass are refined, and the internal quality of the molten glass is improved. The molten glass in the refining vessel 31 is split into two or more stirring devices 40. One of the stirring devices 40 is used to make large format glass frits before conditioning and to make general format glass frits after conditioning. When manufacturing large-sized glass ribbon, the molding capability and molding stripe control difficulty of the glass are high, and the output molding flow is required to be limited. When the device is used for producing large-size glass strips, the output forming flow of the designated flow guiding device 50 is a first flow value which is lower than a second flow value, so that the forming capability and forming stripe control of the large-size glass strips are ensured. In the process of adjusting the output molding flow of the specified stirring device 40 from the first flow value to the second flow value, the output molding flow of the other stirring devices 40 is adjusted downwards, and the size of the adjusted downwards corresponds to the adjusted upwards of the output molding flow of the specified stirring device 40, so that the feeding amount and the discharging amount are kept consistent, and stable process parameters are facilitated to be obtained. Since the remaining stirring device 40 is used for generating the glass ribbon of the general specification, the quality is not reduced due to the down regulation of the output molding flow, the optical constants and the internal quality of all the glass ribbon produced in the transition process can meet the standard requirements, and the waste and the stock generated in the transition process are avoided.

In some embodiments, as shown in connection with FIG. 1, molten glass is output from the fining bath 31 to two stirring devices 40 at a predetermined flow rate. During the upward adjustment of the output molding flow of one of the stirring devices 40 from the first flow value to the second flow value, the output molding flow of the other stirring device 40 is adjusted downward and the amount of the downward adjustment corresponds to the amount of the upward adjustment of the output molding flow of one of the stirring devices 40. Specifically, when the output molding flow rate of the stirring device 40 is specified to be adjusted up from the first flow rate value to the second flow rate value, only the output molding flow rate of the other stirring device 40 needs to be adjusted down, so that the control of the output molding flow rate of the stirring device 40 can be simplified.

In some embodiments, as shown in connection with fig. 1, a glass manufacturing method includes the steps of: the meltable frit is melted to form a preliminary molten glass, and the preliminary molten glass is injected into the fining bath 31. Specifically, the meltable powder is melted by the action of high temperature in the melting tank 21.

In some embodiments, after the discharge of the specified stirring device 40 is completed, the temperature of the discharge pipe 42 is reduced, so that the glass liquid in the discharge pipe 42 is converted into solid glass, i.e. the discharge pipe 42 is cut off, and the specified stirring device 40 is stopped to continue to output. The glass slowly enters the annealing furnace 70 according to the traction rotating speed of the current annealing furnace 70, the finished glass in the annealing furnace 70 can be prevented from being burst during the constant traction rotating speed, the operation of the annealing furnace 70 can be stopped if necessary, the annealing furnace 70 is utilized to immediately perform slow cooling annealing, and further, the large-size glass strips are prevented from being burst. After the large-size glass strip is formed by breaking, the corresponding flow can be compensated to the other stirring devices 40 to perform normal discharging, and the state of the melting tank 21 can still be ensured to be still in the process, or the flow of the melting tank 21 can be finely adjusted according to the single-port forming capability. By implementing the single-port discharging method, after the molding of the large-sized glass ribbon is finished, the stable transition of the filling of the melting tank 21 can be completely realized.

In some embodiments, after the large-sized glass gob is completely withdrawn from the annealing furnace 70, the discharge pipe 42 which is originally broken by the gate can be heated up to discharge immediately, and the output forming flow rate of each stirring device 40 is adjusted to the stable state when the large-sized glass gob is produced. During this process, the state of the melting tank 21 can be stably transited.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A glass manufacturing apparatus, comprising:

the stirring device is provided with a stirring homogenization pool;

2. The glass manufacturing apparatus of claim 1, wherein the flow directing device comprises a flow divider, an input conduit, and a plurality of output conduits; the split fluid, the input conduit and the output conduit respectively form the outer boundary of the inner runner; the shunt body is provided with a shunt inner cavity; the input conduit is communicated between the clarification tank and the diversion cavity; the split fluid is connected with a plurality of output pipes; the output conduit is communicated between the shunt cavity and one stirring homogenization pool.

3. The glass manufacturing apparatus of claim 2, wherein the shunt lumen is inverted hemispherical in shape; and/or the upper boundary of the diversion cavity is lower than the rated liquid level of the clarification tank.

4. A glass manufacturing apparatus according to claim 3, wherein the length of each of the output conduits is uniform.

5. The glass manufacturing apparatus of claim 1, wherein the stirring device is provided with a discharge pipe that communicates with the stirring homogenization tank; the stirring device further comprises a heating piece connected to the discharging pipe; the heating element is used for transferring heat to the molten glass in the discharging pipe.

6. The glass manufacturing apparatus of claim 5, further comprising a control module connected to the heating element of each of the stirring devices; the control module is used for adjusting the heating power of the heating element.

7. The glass manufacturing apparatus of claim 1, further comprising a plurality of forming devices and a plurality of lehr; the molding devices are correspondingly connected with the stirring devices one by one; the annealing furnaces are correspondingly connected to the forming devices one by one.

8. A glass manufacturing method, characterized in that,

9. The glass manufacturing method according to claim 8, wherein a sum of the output molding flow rate of one of the stirring devices and the output molding flow rates of the remaining stirring devices is made equal to the predetermined flow rate at any time.

10. The glass manufacturing method according to claim 8, wherein the first flow value is set according to a size of one of the stirring device forming specifications and a streak risk assessment.

11. A glass manufacturing method, characterized in that,

12. The glass manufacturing method according to claim 11, wherein the molten glass is outputted from the fining bath to the two stirring devices at the predetermined flow rate; in the process that the output molding flow of one stirring device is adjusted upwards from the first flow value to the second flow value, the output molding flow of the other stirring device is adjusted downwards, and the size of the adjusted downwards corresponds to the adjusted upwards amount of the output molding flow of one stirring device.