Lip brick temperature control mechanism, glass plate manufacturing equipment and temperature control method

Abstract

The invention provides a lip brick temperature control mechanism, glass plate manufacturing equipment and a temperature control method.The lip brick temperature control mechanism mainly comprises a lip brick, a temperature measuring assembly, a heating assembly and a control assembly, the temperature measuring assembly is located in the lip brick and used for effectively measuring the temperature of molten glass, and the heating assembly is used for heating the molten glass; the top plate body and the side plate body of the heating assembly directly surround the lip tile, the top plate body is directly contacted with the bottom of the molten glass, and the top plate body and the side plate body are connected into the heating circuit, so that the temperature of the molten glass is directly regulated and controlled, and the molten glass can be heated in a targeted manner in cooperation with the detection of the temperature measuring assembly; electric energy waste caused by comprehensive heating is avoided, and the purposes of saving energy, reducing emission and maintaining process stability are achieved. According to the invention, the problems of high energy consumption and poor effect when the temperature of the molten glass on the lip tile position is kept constant in the existing glass plate manufacturing equipment are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of glass manufacturing, and in particular to a lip brick temperature control mechanism, a glass plate manufacturing device and a temperature control method. Background Art

[0002] In the solar photovoltaic glass industry, calendering is one of the main methods for forming glass sheets. After the molten glass is heated inside the kiln, it flows to the end of the kiln branch channel, flows through the lip brick, and is squeezed by upper and lower calendering rollers to roll the molten glass into a glass sheet with uniform thickness and pattern. After the glass sheet is gradually cooled, it enters the annealing furnace to eliminate stress. The subsequent processes further include cutting, chamfering, grinding, and cleaning of the glass sheet until the product is packaged.

[0003] Normally, when the glass liquid in the furnace branch channel flows to the top of the lip brick, the glass liquid dissipates unevenly due to the overall layout and installation of the lip brick and the structure of the furnace branch channel. The temperature of the glass liquid at the edges of the lip brick is lower than that in the middle of the lip brick. The wider the glass width, the greater the temperature difference between the two, and there will be a lateral thickness deviation of the glass plate (i.e. the thickness difference between the middle part and the edges of the glass on both sides).

[0004] In the prior art, in order to heat the glass liquid on the edges of both sides of the lip brick, a heating structure is usually set directly on the top of the glass liquid, such as the electric heating structure set in the patent CN202022838048.3, the hot air circulation cylinder set in the patent CN201711232791.0, or the edge burning air gun is directly set for heating. The heating method is mainly to cover the entire upper surface of the glass liquid, which is equivalent to playing an overall heat preservation role, and cannot perform targeted heating according to the actual temperature of the glass liquid. The overall energy consumption and effect are relatively poor.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] A technical problem to be solved by the present application is that the existing glass plate manufacturing equipment has the problem of high energy consumption and poor effect in maintaining a constant temperature of the glass liquid at the lip brick position.

[0007] To solve the above technical problems, on the first aspect, an embodiment of the present application provides a lip brick temperature control mechanism, which mainly includes a lip brick, a temperature measuring component, a heating component and a control component. The lip brick includes a temperature measuring channel, which runs through the lip brick in a vertical direction; the temperature measuring component is fixedly arranged in the temperature measuring channel; the heating component includes a top plate and multiple side plates made of conductive material, the top plate and two adjacent side plates form a lip brick installation space, the lip brick is detachably connected to the side plates, and the lip brick is attached to the top plate; the control component includes multiple power terminals connected one by one to the multiple side plates, and the temperature measuring component is electrically connected to the control component.

[0008] In some embodiments, the top panel and the plurality of side panels are an integrally formed structure.

[0009] In some embodiments, the conductive material is a platinum-rhodium alloy material, and the thickness of the top plate and the plurality of side plates are both greater than or equal to 4 mm.

[0010] In some embodiments, the temperature measuring component is a thermocouple, and the temperature measuring component is fixedly connected to the top plate.

[0011] In some embodiments, the power connection end is fixedly connected to the side plate, and an elastic component is provided between the power connection end and an end of the lip brick away from the top plate, and the elastic component applies a force to the lip brick close to the top plate.

[0012] In some embodiments, the elastic component includes one or more disc spring structures, which apply thrust to the lip brick and the power terminal respectively.

[0013] In some embodiments, the elastic component further includes a first abutment plate and a second abutment plate, the first abutment plate is fixedly connected to the power connection terminal, and the second abutment plate abuts against the lip brick.

[0014] In some embodiments, the electrical connection end is a threaded rod, and the elastic component further includes a fastener, which is threadedly connected to the threaded rod to limit the first abutment plate.

[0015] In the second aspect, an embodiment of the present application provides a glass manufacturing device, which includes a rolling mechanism and a lip brick temperature control mechanism as described above, wherein the rolling mechanism includes a first rolling roller and a second rolling roller, wherein a rolling space is formed between the first rolling roller and the second rolling roller, and a top plate of the lip brick temperature control mechanism has a side away from the lip brick pointing toward the rolling space.

[0016] In a third aspect, an embodiment of the present application provides a temperature control method, using the glass manufacturing device as described above, the temperature control method further includes the following steps:

[0017] Introduce the glass liquid into the side of the top plate away from the lip brick;

[0018] Determine the real-time temperature of the glass liquid and compare it with the preset target temperature;

[0019] If the real-time temperature value is less than the target temperature value, the heating circuit is turned on to heat the side plates and the top plate on both sides of the lip brick;

[0020] Real-time monitoring of the changing temperature of glass liquid;

[0021] When the changed temperature value is greater than or equal to the preset target temperature value, the heating circuit is disconnected and the real-time temperature value of the glass liquid is repeatedly measured.

[0022] Through the above technical scheme, the present application provides a lip brick temperature control mechanism, a glass plate manufacturing device and a temperature control method, wherein the lip brick temperature control mechanism mainly includes a lip brick, a temperature measuring component, a heating component and a control component, the lip brick includes a temperature measuring channel, and the temperature measuring channel penetrates the lip brick in a vertical direction; the temperature measuring component is fixedly arranged in the temperature measuring channel; the heating component includes a top plate body and a plurality of side plates made of a conductive material, the top plate body and two adjacent side plates form a lip brick installation space, the lip brick is detachably connected to the side plates, and the lip brick is attached to the top plate body; the control component includes a plurality of power terminals connected to the plurality of side plates in a one-to-one correspondence, and the temperature measuring component is electrically connected to the control component.

[0023] The temperature measuring component is located inside the lip brick to effectively measure the temperature of the glass liquid. The top plate and the side plate made of conductive material directly surround the lip brick. On the one hand, it is directly in contact with the bottom of the glass liquid. On the other hand, it can form a heating circuit through the two power terminals of the control component to directly heat the bottom of the glass liquid. The heating area is part of the top plate between the two side plates, which can achieve real-time heating of the area with lower temperature and realize precise temperature control. The above-mentioned setting can not only specifically measure the temperature of the glass liquid in the corresponding area of ​​a single lip brick, but also perform targeted heating treatment according to the temperature of the glass liquid in the corresponding area, avoiding the waste of electric energy caused by comprehensive heating, and can reduce the power requirement of the heating component. At the same time, the heated area can also meet the manufacturing temperature requirements, achieving energy conservation and emission reduction, and maintaining process stability. The present application effectively solves the problem of high energy consumption and poor effect in maintaining a constant temperature of the glass liquid at the lip brick position in the existing glass plate manufacturing equipment.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a lip brick temperature control mechanism disclosed in an embodiment of the present application is shown;

[0027] Figure 2 Shows Figure 1 Schematic diagram of the three-dimensional structure of the lip brick temperature control mechanism without the lip brick;

[0028] Figure 3 Shows Figure 1 Schematic diagram of the main view of the lip brick temperature control mechanism without the lip brick;

[0029] Figure 4 Shows Figure 1 Schematic diagram of the coordination between the power connection terminal and the elastic component of the lip brick temperature control mechanism;

[0030] Figure 5 Shows Figure 1 A schematic cross-sectional view of a lip brick in a lip brick temperature control mechanism;

[0031] Figure 6 Shows Figure 1 A three-dimensional schematic diagram of a partial structure of a glass plate manufacturing device provided in an embodiment of the present application;

[0032] Figure 7 Shows Figure 6 A schematic diagram of a front view of a portion of the structure of a glass sheet manufacturing equipment;

[0033] Figure 8 Shows Figure 6 Schematic side view of part of a glass sheet manufacturing apparatus.

[0034] The above drawings contain the following reference numerals:

[0035] 10. Lip brick; 11. Temperature measuring channel; 20. Temperature measuring assembly; 30. Heating assembly; 31. Top plate; 32. Side plate; 40. Control assembly; 41. Power terminal; 411. Threaded section; 412. Clip section; 50. Elastic assembly; 51. Disc spring structure; 52. First abutment plate; 53. Second abutment plate; 54. Fastener; 60. Calendering mechanism; 61. First calendering roller; 62. Second calendering roller; 63. Calendering space; 70. Glass liquid. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0037] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0038] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0039] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0040] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0041] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0042] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0043] like Figures 1 to 3 as well as Figure 5 As shown, in the first aspect, in some exemplary embodiments of the present application, a lip brick temperature control mechanism is provided, which mainly includes a lip brick 10, a temperature measuring component 20, a heating component 30 and a control component 40, wherein the lip brick 10 includes a temperature measuring channel 11, and the temperature measuring channel 11 is arranged to penetrate the lip brick 10 in a vertical direction; the temperature measuring component 20 is fixedly arranged in the temperature measuring channel 11; the heating component 30 includes a top plate 31 and a plurality of side plates 32 made of conductive material, the top plate 31 and two adjacent side plates 32 form an installation space for the lip brick 10, the lip brick 10 is detachably connected to the side plates 32, and the lip brick 10 is attached to the top plate 31; the control component 40 includes a plurality of power terminals 41 connected to the plurality of side plates 32 in a one-to-one correspondence, and the temperature measuring component 20 is electrically connected to the control component 40.

[0044] The temperature measuring component 20 is located inside the lip brick 10, and can effectively measure the temperature of the glass liquid 70. It can be understood that the lip brick 10 is directly in contact with the glass liquid 70 before the improvement, and after the improvement, the lip brick is in contact with the top plate 31, and the glass liquid 70 is in contact with the top plate 31. In this way, the heat of the glass liquid 70 is transferred through the top plate 31, and the specific temperature value can be directly obtained, which is convenient for controlling the real-time temperature of the glass liquid 70 and maintaining its temperature before rolling.

[0045] The top plate 31 and the side plate 32 made of conductive material can be directly connected to the heating circuit, which is equivalent to the top plate 31 as a heating structure, and the side plate 32 as a conductor, and the top plate 31 directly contacts the bottom of the glass liquid 70 to achieve heating of the glass liquid 70. The power connection terminal 41 provided by the control component 40 forms a heating circuit with the top plate 31 and the two side plates 32, which can achieve real-time heating of the area with lower temperature and realize precise temperature control.

[0046] It can be understood that the two power terminals 41 of the control component form a heating circuit with the top plate 31 and the two side plates 32, and are not limited to two adjacent side plates 32. That is, the area that needs to be heated can be measured by the temperature measuring component 20, and then the length of the heating area can be determined to determine which two side plates 32 the area is between, thereby achieving more flexible regional heating of the glass liquid 70.

[0047] The above-mentioned setting can not only specifically measure the temperature of the glass liquid 70 in the corresponding area of ​​a single lip brick 10, but also perform targeted heating treatment according to the temperature of the glass liquid 70 in the corresponding area. On the one hand, it can avoid the waste of electric energy caused by comprehensive heating, and on the other hand, it can reduce the overall power requirement of the heating component 30. At the same time, the heated area can also meet the manufacturing temperature requirements, achieving energy conservation and emission reduction, and maintaining process stability. The present application effectively solves the problem of high energy consumption and poor effect in maintaining a constant temperature of the glass liquid at the lip brick position in the existing glass plate manufacturing equipment.

[0048] It should be noted that, according to the width of the glass plate and the requirements for product thickness, the temperature of the glass liquid 70 flowing through the lip brick is usually between 1065-1070°C, and the temperature requirements of the glass liquid 70 for glass products of different thicknesses are slightly different. The transverse thickness deviation of the glass plate (i.e., the thickness difference between the middle part of the glass and the edge parts on both sides) is an important indicator for evaluating the quality of the glass plate. Glass plates that exceed the thickness deviation of the quality assurance standard will not meet the product function requirements of downstream users. In order to ensure that the transverse thickness deviation of the glass plate after calendering meets the standard, the temperature difference between the glass liquid 70 in the middle part of the lip brick and the glass liquid 70 on both sides of the edge is required to be within 8°C. Under normal circumstances, when the glass liquid 70 in the kiln branch channel flows to the top of the lip brick, due to the overall layout and installation of the lip brick and the structure of the kiln branch, the heat dissipation of the glass liquid 70 is uneven, and the temperature of the glass liquid 70 on both sides of the lip brick is lower than that of the glass liquid 70 in the middle part of the lip brick. The wider the glass format, the greater the temperature difference between the two. The solution of the above embodiment can be used to heat the glass liquid 70 with uneven temperature in different regions, thereby meeting the requirements of subsequent calendering.

[0049] like Figures 1 to 3 As shown, in some exemplary embodiments of the present application, the top plate 31 and the plurality of side plates 32 are an integrally formed structure. The integrally formed structure enables the heating assembly 30 to have a complete top plate 31 adapted to a glass product with a larger width.

[0050] It can be understood that the integrated arrangement of the top plate 31 and the multiple side plates 32 can meet the requirements for the passage of current, that is, current flows from one side plate through its corresponding top plate 31 area and out of the other side plate 32 to form a loop, while the remaining side plates 32 and the corresponding top plate 31 areas are equivalent to open circuits and will not affect the on-off of the circuit.

[0051] In some exemplary embodiments of the present application (not shown in the figure), the conductive material is a platinum-rhodium alloy material, and the thickness of the top plate 31 and the plurality of side plates 32 are both greater than or equal to 4 mm. The setting of the platinum-rhodium alloy material can achieve conductivity in a high temperature environment and heating of the glass liquid 70. It has the characteristics of increased resistivity and reduced resistance temperature coefficient, and has a high advantage in heating the glass liquid 70. It also has high mechanical properties, and even in a high temperature environment, it has very stable mechanical properties and almost no morphological changes. Compared with the existing lip bricks that directly use zirconium mullite as a raw material, it has higher structural strength and corrosion resistance, and can meet the needs of high-precision glass manufacturing.

[0052] The platinum-rhodium alloy material can specifically be PtRh20 alloy, which is a high-temperature thermocouple material with a high-temperature use temperature of 1750°C, which is higher than the temperature range of 70°C of glass liquid and is suitable for the manufacture of glass. The PtRh20 alloy has high tensile strength and can be adapted to lip bricks with certain thermal expansion and contraction, which stabilizes the structure and improves the precision of glass products. In addition, the PtRh20 alloy also has excellent refractory metal and precious metal properties, and meets the high-temperature conductivity and resistivity required for heating. It can also be formed by 3D printing to form the structure of the top plate 31 and the side plate 32, with higher structural precision, and the physical properties after molding meet the use requirements. It should be noted that the composition of the PtRh20 alloy is a mixture of platinum and rhodium, in which the rhodium content is 20%.

[0053] Furthermore, in some exemplary embodiments of the present application, the alloy thickness of PtRh20 is greater than or equal to 4 mm. Such a thickness setting meets the structural strength requirements of the plate and is easy to manufacture. Its resistivity and conductivity can meet the heating requirements at the temperature of the glass liquid 70.

[0054] like Figures 1 to 3 As shown, in some exemplary embodiments of the present application, the temperature measuring component 20 is an electric thermocouple, and the temperature measuring component 20 is fixedly connected to the top plate 31. Thermocouples are commonly used temperature measuring elements in temperature measuring instruments, which can directly measure temperature, that is, directly measure the temperature of the top plate 31. The top plate 31 is in direct contact with the glass liquid 70 and has good thermal conductivity, that is, directly measure the temperature of the glass liquid 70. Such a setting measurement structure is more accurate and reliable, and can meet the needs of regional precision testing.

[0055] Specifically, the thermocouple converts the temperature signal into a thermoelectric electromotive force signal, and transmits it to the control component 40 through the signal connection. The control component 40 can start and stop the heating component 30 according to the measured temperature information. The thermocouple is directly connected to the top plate 31 and passes through the temperature measurement channel 11. On the one hand, the structure is compact and reliable, and on the other hand, it will not directly contact the glass liquid 70 or the high temperature area, which will affect the accuracy of the thermocouple measurement data.

[0056] In an optional embodiment, the temperature measurement component 20 uses an S-type thermocouple for temperature measurement. The S-type thermocouple is a single platinum-rhodium thermocouple, which mainly measures the temperature of the medium between 0 and 1600°C and has the highest measurement accuracy. Its physical and chemical properties are stable, with good reproducibility, and it exhibits good anti-oxidation properties at low temperatures. The S-type thermocouple performs well in long-term use, has a long service life, and a wide temperature measurement range, and can ensure high measurement accuracy within the temperature range of 800 to 1300°C. When the S-type thermocouple is set in the temperature measurement channel 11, contamination can be effectively avoided. The lip brick material and environment on the surrounding side can ensure the structural strength of the temperature measurement channel 11, thereby meeting the situation where the mechanical strength of the S-type thermocouple decreases at high temperatures. The S-type thermocouple, specifically, has one or more in a single heating circuit and is evenly distributed along the width of the glass.

[0057] like Figures 1 to 4 As shown, in some exemplary embodiments of the present application, the power connection terminal 41 is fixedly connected to the side plate 32, and an elastic component 50 is provided between the power connection terminal 41 and the end of the lip brick 10 away from the top plate 31, and the elastic component 50 applies a force to the lip brick 10 to approach the top plate 31. The setting of the elastic component 50 cooperates with the top plate 31 and the side plate to limit the lip brick 10, and the elastic component 50 is equivalent to pushing the lip brick 10, so that the lip brick 10 and the top plate 31 can be tightly combined to prevent the entry of the glass liquid 70.

[0058] At the same time, the lip brick 10 will experience certain thermal expansion and contraction under the high temperature of the glass liquid 70. At this time, the elastic component 50 can adapt to the thermal expansion and contraction of the lip brick 10, avoiding overly rigid installation that may cause structural damage to the lip brick 10, which is beneficial to improving the service life of the overall structure.

[0059] It can be understood that the fixed connection between the power terminal 41 and the side plate 32 serves as a fixing basis for the elastic component 50. The force exerted by the elastic component 50 will eventually be fed back to the heating component 30. Such a setting has balanced internal forces, a compact structure, and a relatively stable connection that is not prone to damage.

[0060] like Figure 4As shown, in some exemplary embodiments of the present application, the elastic component 50 includes one or more disc spring structures 51, and the disc spring structures 51 apply thrust to the lip brick 10 and the power terminal 41 respectively. The disc spring structure 51 is set to apply elastic force. It has the characteristics of high rigidity, strong buffering and vibration absorption ability, and can withstand large loads with small deformation. It can be suitable for the position of the power terminal 41 with small axial space requirements. At the same time, the disc spring structure 51 can be combined in different ways, which can make the elastic capacity of the combination vary in a wide range. When the lip brick 10 expands due to heat, its vertical expansion relative to the top plate 31 is buffered and absorbed by the disc spring structure 51.

[0061] It should be noted that the multiple disc spring structures 51 can be combined in a matching or overlapping manner, or in a combination of different thicknesses, different numbers of sheets, etc., which can adapt to different elasticity or elastic force requirements and have higher adaptability.

[0062] like Figure 4 As shown, in some exemplary embodiments of the present application, the elastic component 50 further includes a first abutting plate 52 and a second abutting plate 53, the first abutting plate 52 is fixedly connected to the power terminal 41, and the second abutting plate 53 abuts against the lip brick 10. The first abutting plate 52 and the second abutting plate 53 are used to clamp the disc spring structure 51, so that the force direction of the disc spring structure 51 can be ensured to be always perpendicular to the first abutting plate 52 and the second abutting plate 53, and the first abutting plate 52 is equivalent to a force transfer plate.

[0063] It is understandable that the first abutment plate 52 above the elastic component 50 located between the two lip bricks 10 will bear the gravity and the force of the two lip bricks 10 respectively. Such a setting can balance the force direction, so that the force on the first abutment plate 52 is balanced, avoiding lateral force caused by deformation, thereby causing the disc spring structure 51 to be subjected to biased pressure, resulting in damage, and affecting the overall service life of the elastic component 50.

[0064] In an optional embodiment, the first abutment plate 52 is made of a high temperature resistant flexible material. The provision of the flexible material allows the first abutment plate 52 to be tightly combined with the lip brick 10, thereby ensuring the structural integrity of the lip brick 10 and increasing its service life.

[0065] like Figure 4 As shown, in some exemplary embodiments of the present application, the power connection end 41 is a threaded rod, and the elastic component 50 further includes a fastener 54, which is threadedly connected to the threaded rod to limit the first abutment plate 52. The fastener 54 can be threadedly connected to the power connection end 41 to form a self-locking thread, maintain a tightening effect, have an adjustable property, and facilitate disassembly and installation.

[0066] The power terminal 41 includes a threaded section 411 and a clamping section 412. The threaded section 411 is threadedly matched with the fastener 54. The clamping section 412 clamps the side plate 32 from both sides to form a fixation, which can increase the bonding between the power terminal 41 and the side plate 32 and maintain the stability of power supply. The power terminal 41 can be made of copper material, which has good mechanical structure properties and conductive properties and can meet the environment in which it is used.

[0067] In order to achieve complete fixation of the clamping segment 412 and the side plate body 32 , the two may be welded after the clamping is formed to increase the connection strength.

[0068] In an optional embodiment, a PtRh20 precious metal alloy is used to form the top plate 31 and the side plate 32, so as to wrap the lip brick 10, and the precious metal alloy is energized, and then the precious metal alloy self-heats to control the temperature of the glass liquid.

[0069] The arrangement of multiple side plates 32 divides the top plate 31 above the lip brick 10 into several heating sections. The glass liquid 70 in the center of the top plate 31 can be left unheated or less heated according to the process requirements. The glass liquid 70 on both sides and the edge of the center of the top plate 31 is heated according to the actual process requirements, so that the temperature of the glass liquid 70 over the entire width of the lip brick 10 can be made consistent.

[0070] An S-type thermocouple connected to the top plate 31 is provided in the temperature measuring channel 11 of each lip brick 10, so as to measure the temperature of the glass liquid 70 area corresponding to the individual lip brick 10. Since the glass liquid 70 is in direct contact with the top plate 31, the S-type thermocouple feeds back the actual temperature value of the glass liquid 70, and the measurement result is more accurate and stable.

[0071] The lower parts of the two side plates 32 corresponding to the lip brick 10 are provided with power terminals 41 and elastic components 50 , which are convenient for electrical wiring and fixing the integral heating component 30 to the lip brick 10 .

[0072] In addition, when the kiln system of the glass liquid 70 heats the lip brick 10 , the heating component 30 can rely on the elastic component 50 to flexibly contact it, which will not cause the heating component 30 to deform and has adaptability to the thermal expansion of the lip brick 10 .

[0073] The top plate 31 covers the top surface of the lip brick 10 and can withstand high temperatures, so the service life of the lip brick 10 will reach more than 5 to 6 years, which is basically the same as the service life of the kiln. At the same time, it can avoid glass defects caused by cracking of the lip brick 10 during use, such as hidden lines, flow ribs, bubbles, etc.

[0074] The heating component 30 is formed of a PtRh20 precious metal alloy to cover the top and side surfaces of the lip brick 10. The material has good thermal and electrical conductivity, a melting point of >1880°C, and the plate-shaped PtRh20 alloy has excellent comprehensive mechanical strength, which is suitable for the needs of glass manufacturing.

[0075] The PtRh20 alloy material on the top of the lip brick 10 is divided into several heating sections according to the number of segmented lip bricks 10. There are conductive side plates 32 on both sides corresponding to each heating section. An electrical terminal 41 is fixedly connected to the bottom of the side plate 32, specifically an electrode connecting screw. The screw is made of copper and has good conductive properties.

[0076] An elastic component 50 is installed on the power terminal 41, which mainly includes a disc spring structure 51. When the disc spring structure 51 is tightened, the top plate 31 and the bottom surface of the lip brick 10 are fixed to each other. When the kiln system is heated, the lip brick 10 expands and the disc spring structure 51 is compressed to ensure that the top plate 31 is not deformed.

[0077] In a specific embodiment, the installation process of the lip brick temperature control mechanism is as follows: the size and quantity of the lip brick 10 are determined according to the width of the glass product, so as to obtain the size of the top plate 31 and the side plate 32 of the heating component 30, and a temperature measurement channel 11 is opened on the lip brick 10 for installing the temperature measurement component 20, that is, the S-type thermocouple. The integrated heating component 30 is installed in conjunction with multiple lip bricks 10 to ensure that the temperature measurement component 20 is fixed on the top plate 31 through the lip brick 10. Then, the elastic component 50 is installed on the power connection terminal 41, and the fastener 54 is rotated so that the first abutment plate 52 is in contact with the bottom of the lip brick 10 and the fastener 54 is continuously rotated until the disc spring structure 51 is compressed and deformed. The specific deformation amount can be adjusted according to the maximum design value of the disc spring structure 51 of the corresponding specification by 20%. The installation pre-tightening of the elastic component 50 on the two outermost side plates 32 of the heating component 30 needs to rely on the brick structure of the edge of the kiln. After that, the side plate 32 is connected, the power terminal 41 is clamped and welded to the side plate 32 to be fixed, and then connected to the control component 40, and the temperature measurement component 20 is connected at the same time. After the connection is completed, it needs to be powered on in cold state for debugging.

[0078] like Figures 6 to 8As shown, in the second aspect, in some exemplary embodiments of the present application, a glass manufacturing device is provided, the glass manufacturing device includes a calendering mechanism 60 and a lip brick temperature control mechanism as in any of the above embodiments, the calendering mechanism 60 includes a first calendering roller 61 and a second calendering roller 62, a calendering space 63 is formed between the first calendering roller 61 and the second calendering roller 62, and a top plate 31 of the lip brick temperature control mechanism is directed to the calendering space 63 away from the lip brick 10. The lip brick temperature control mechanism and the specific beneficial effects of its internal structure can be found in the description of the above embodiments, which will not be repeated here. The first calendering roller 61 and the second calendering roller 62 of the calendering mechanism 60 are used to form a specific shape of the glass plate, and the thickness and width can be adjusted according to actual needs.

[0079] On the third aspect, in some exemplary embodiments of the present application, a temperature control method is provided, which is applied to the glass manufacturing equipment as in the above embodiments. The specific beneficial effects of the glass manufacturing equipment and its lip brick temperature control mechanism can be found in the description in the above embodiments and will not be repeated here.

[0080] The temperature control method also includes the following steps:

[0081] S10, introducing the glass liquid 70 into the side of the top plate 31 away from the lip brick 10; performing the pre-process of the rolling process, at this time, the shape of the glass liquid 70 can be adjusted, and the temperature of the glass liquid 70 can be gradually controlled to make it close to the temperature required for the rolling process. Specifically, it can be introduced into the top plate 31 through the liquid channel to the limiting structure arranged opposite to it, or directly forming the glass liquid of the required thickness to meet the requirements of the rolling process.

[0082] S20, measure the real-time temperature value of the glass liquid 70 and compare it with the preset target temperature value; specifically, through the temperature measuring component 20 located in the temperature measuring channel 11 and connected to the top plate 31, the temperature is recorded and transmitted to the control component 40, and the control component 40 records and compares the preset target temperature value to determine whether heating is required.

[0083] S30, if the real-time temperature value is less than the target temperature value, the heating circuit is turned on to heat the side plates 32 and the top plate 31 on both sides of the lip brick 10; when the control component 40 determines that the real-time temperature value is less than the target temperature value, it is necessary to heat it by power. At this time, a heating loop is formed through the power terminal 41, and the current flows from the part of the top plate 31 corresponding to the area to be heated to determine which two side plates 32 need to form a heating loop. After confirmation, power is turned on to heat the glass liquid 70 by the top plate 31.

[0084] S40, real-time monitoring of the changing temperature value of the glass liquid 70; specifically, the temperature is recorded and transmitted to the control component 40 through the temperature measuring component 20. The changing temperature value belongs to the changing range. The control component 40 records and compares the preset target temperature value to determine whether to continue heating.

[0085] S50, when the changed temperature value is greater than or equal to the preset target temperature value, the heating circuit is disconnected, and the real-time temperature value of the glass liquid 70 is repeatedly measured. The temperature adjustment of the glass liquid 70 is completed, and the temperature change is monitored in real time to ensure that the temperature of the glass liquid 70 entering the rolling space 63 meets the requirements.

[0086] Furthermore, in step S30, there are the following steps:

[0087] S31, if there are multiple areas where the real-time temperature value is lower than the target temperature value, identify the area where the difference between the real-time temperature value and the target temperature value is the largest, connect the two side plates 32 corresponding to the area and turn on the power, and after the temperature reaches the standard, heat each area one by one in a manner that gradually reduces the difference.

[0088] In a specific production process, it is assumed that the glass plate produced is 3 meters wide and 3 mm thick, and the temperature of the glass liquid in front of the calendering roller is managed at 1070°C; the width of the top plate 31 is 3 meters. Before the heating component 30 is powered on for heating, the temperature measuring component 20 connected to the center of the top plate 31 feedbacks the temperature tCD=1070°C, and the temperatures on both sides of the center top plate 31 from near to far are tBC=tDE=1060°C and tAB=tEF=1050°C, respectively, and the temperature difference between the edge and the center area is 20°C. At this time, it is necessary to carry out regional heating, specifically: first, power on the AB and EF sections separately until the feedback temperature of the thermocouples in the two sections rises from 1050℃ to 1070℃; power on the BC and DE sections separately until the feedback temperature of the thermocouples in the two sections rises from 1060℃ to 1070℃; the power-on can be set to the automatic temperature control mode, that is, when the feedback temperature of the temperature measuring component 20 is lower than 1070℃, the powered section is continuously powered until the temperature reaches the target value; when the feedback temperature of the temperature measuring component 20 is greater than 1070℃, the power supply to the powered section is reduced until the temperature reaches the target value; the CD section does not need to be powered.

[0089] In another specific production process, referring to the above process,

[0090] Assuming tCD = 1065°C, tBC = tDE = 1055°C, tAB = tEF = 1045°C, the CD section needs to be powered on until the feedback temperature of the thermocouple in this section rises from 1065°C to 1070°C; the AB and EF sections need to be powered on separately until the feedback temperature of the thermocouples in the two sections rises from 1045°C to 1070°C; the BC and DE sections need to be powered on separately until the feedback temperature of the thermocouples in the two sections rises from 1055°C to 1070°C; the above power-on of the side plate 32 can be set to the automatic temperature control mode, that is, when the feedback temperature of the temperature measuring component 20 is lower than 1070°C, the powered section is continuously powered until the temperature reaches the target value; when the feedback temperature of the temperature measuring component 20 is greater than 1070°C, the power supply to the powered section is reduced until the temperature reaches the target value.

[0091] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0092] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A lip brick temperature control mechanism, characterized in that: include: The lip brick (10) comprises a temperature measuring channel (11), wherein the temperature measuring channel (11) is arranged to penetrate the lip brick (10) in a vertical direction; A temperature measuring component (20) is fixedly arranged in the temperature measuring channel (11); The heating assembly (30) comprises a top plate (31) and a plurality of side plates (32) made of a conductive material, wherein the top plate (31) and two adjacent side plates (32) form a lip brick (10) installation space (33), the lip brick (10) and the side plates (32) are detachably connected, and the lip brick (10) and the top plate (31) are attached to each other; The control component (40) comprises a plurality of electrical terminals (41) connected in a one-to-one correspondence with the plurality of side plates (32), and the temperature measuring component (20) is electrically connected to the control component (40).

2. The lip brick temperature control mechanism according to claim 1, characterized in that: The top plate (31) and the plurality of side plates (32) are an integrally formed structure.

3. The lip brick temperature control mechanism according to claim 2, characterized in that: The conductive material is a platinum-rhodium alloy material, and the thickness of the top plate (31) and the plurality of side plates (32) are both greater than or equal to 4 mm.

4. The lip brick temperature control mechanism according to claim 1, characterized in that: The temperature measuring component (20) is an electric thermocouple, and the temperature measuring component (20) is fixedly connected to the top plate (31).

5. The lip brick temperature control mechanism according to any one of claims 1 to 4, characterized in that: The power connection end (41) is fixedly connected to the side plate (32), and an elastic component (50) is provided between the power connection end (41) and an end of the lip brick (10) away from the top plate (31), and the elastic component (50) applies a force to the lip brick (10) to move it closer to the top plate (31).

6. The lip brick temperature control mechanism according to claim 5, characterized in that: The elastic component (50) comprises one or more disc spring structures (51), and the disc spring structures (51) apply thrust to the lip brick (10) and the power connection terminal (41) respectively.

7. The lip brick temperature control mechanism according to claim 6, characterized in that: The elastic component (50) further comprises a first abutment plate (52) and a second abutment plate (53); the first abutment plate (52) is fixedly connected to the power connection terminal (41), and the second abutment plate (53) abuts against the lip brick (10).

8. The lip brick temperature control mechanism according to claim 7, characterized in that: The power connection end (41) is a threaded rod, and the elastic component (50) further comprises a fastener (54), wherein the fastener (54) is threadedly connected to the threaded rod to limit the first abutment plate (52).

9. A glass manufacturing device, characterized in that: The glass manufacturing equipment comprises a rolling mechanism (60) and a lip brick temperature control mechanism as described in any one of claims 1 to 8, the rolling mechanism (60) comprises a first rolling roller (61) and a second rolling roller (62), a rolling space (63) is formed between the first rolling roller (61) and the second rolling roller (62), and a top plate (31) of the lip brick temperature control mechanism has a side away from the lip brick (10) pointing toward the rolling space (63).

10. A temperature control method, characterized in that: Using the glass manufacturing equipment as described in claim 9, the temperature control method further includes the following steps: Introducing glass liquid (70) into a side of the top plate (31) away from the lip brick (10); Determining the real-time temperature value of the glass liquid (70) and comparing it with a preset target temperature value; If the real-time temperature value is less than the target temperature value, the heating circuit is turned on to electrically heat the side plates (32) and the top plate (31) on both sides of the lip brick (10); Real-time monitoring of the temperature change of the glass liquid (70); When the changed temperature value is greater than or equal to a preset target temperature value, the heating circuit is disconnected, and the real-time temperature value of the glass liquid (70) is repeatedly measured.

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