Transverse temperature difference adjusting device for molten glass at overflow port of rolled glass melting furnace

Abstract

The invention discloses a glass liquid transverse temperature difference adjusting device for an overflow port of a rolled glass melting furnace, which comprises a flame blocking brick, a cut-off gate plate and a cover plate brick which are arranged above the overflow port and are sequentially arranged towards the direction of a calender, and the heights of the flame blocking brick, the cut-off gate plate and the cover plate brick are independently adjusted; blocking parts are formed on the two sides of the cut-off gate plate, one blocking part is in contact with the flame blocking brick, and the other blocking part is in contact with the cover plate brick; the cover plate brick is made of a material capable of heating after being electrified, the cover plate brick comprises a plurality of brick bodies which are distributed in the transverse direction, the height, the electrified power and the current of each brick body can be independently adjusted, and the height, the electrified power and the current of each brick body can be controlled by controlling the height, the electrified power and the current of each brick body. Accurate temperature control can be performed on different transverse positions of molten glass, diversified production requirements are met, the transverse temperature difference is effectively reduced, and the quality of a glass plate is improved.

Description

Technical Field

[0001] This invention relates to the technical field of glass processing, and more particularly to a device for adjusting the transverse temperature difference of molten glass at the overflow port of a rolling glass melting furnace. Background Technology

[0002] The glass industry is a key sector in numerous fields, including building materials production, photovoltaics, electronic displays, and daily-use pharmaceutical containers. In the production process of rolling glass melting furnaces, the lateral temperature difference of the molten glass at the overflow outlet plays a decisive role in the glass forming process and the uniformity of the final glass sheet. Excessive lateral temperature difference leads to significant variations in the viscosity and fluidity of the molten glass, resulting in uneven glass sheet thickness, warping, and deformation, severely impacting the appearance quality of the glass product. Furthermore, excessive lateral temperature difference can damage the internal structure of the glass, reduce optical performance, and produce defects such as glass streaks and ripples, significantly reducing yield and increasing production costs.

[0003] Currently, the main method for regulating the lateral temperature difference of molten glass is to add edge heating or cooling air systems near the overflow outlet. However, this method has many drawbacks. On the one hand, operators need to frequently adjust the heating power or cooling air volume to compensate for the lateral temperature difference, making the production control process complex and cumbersome, and difficult to achieve an ideal stable state. On the other hand, this regulation method lacks precision and cannot perform detailed temperature control at different lateral positions of the molten glass, making it difficult to meet the demands of modern production for high-quality glass products. Summary of the Invention

[0004] In view of the above-mentioned problems with existing glass melt lateral temperature difference regulation, the present invention aims to provide a glass melt lateral temperature difference regulation device at the overflow port of a rolling glass melting furnace.

[0005] The specific technical solution is as follows: A transverse temperature difference adjustment device for molten glass overflow in a rolling glass melting furnace includes: a flame baffle brick, a cut-off gate, and a cover brick arranged sequentially above the overflow and facing the rolling mill, wherein the heights of the flame baffle brick, the cut-off gate, and the cover brick are all independently adjustable. Both sides of the cut-off gate are formed with a baffle, one of which contacts the flame-blocking brick and the other baffle contacts the cover brick; The cover plate brick is made of an electrically heated material. The cover plate brick includes several bricks distributed in a horizontal direction. The height, power and current of each brick can be independently adjusted. By controlling the height, power and current of the brick, the temperature of the molten glass at the overflow port located directly below the brick can be controlled.

[0006] As a further improvement and optimization of this solution, when the temperature of the molten glass at a certain position of the overflow port is high, the temperature of the molten glass at that position can be reduced by increasing the height of the brick corresponding to that position or reducing the power and current passing through the brick at that position. When the temperature of the molten glass at a certain location in the overflow port is low, the temperature of the molten glass at that location can be increased by reducing the height of the brick corresponding to that location or by increasing the power and current supplied to the brick at that location.

[0007] As a further improvement and optimization of this solution, the flame-blocking brick, the cut-off gate, and each of the bricks are height-adjusted by a set of electric hoists installed on the glass melting furnace.

[0008] As a further improvement and optimization of this solution, a temperature detection mechanism and a control cabinet are also included. The temperature detection mechanism is used to detect the multi-row transverse temperature of the molten glass between the overflow port and the rolling mill, and transmits the temperature to the control cabinet so that the control cabinet controls the height of the brick at the corresponding position as well as the power and current.

[0009] As a further improvement and optimization of this solution, the temperature detection mechanism is a thermal imager, which is located above the overflow port and between the cover brick and the calender.

[0010] As a further improvement and optimization of this solution, each of the electric hoists is equipped with a stroke sensor to identify and record the lifting or lowering distance data of the electric hoist, and to feed the data back to the control cabinet.

[0011] As a further improvement and optimization of this solution, the material of the brick is molybdenum disilicide.

[0012] As a further improvement and optimization of this solution, the blocking part and the cutting-off gate are integrally formed.

[0013] The positive effects of the above technical solution compared with the existing technology are: This invention allows for independent adjustment of the height of the flame-blocking bricks, the cut-off gate, and the cover bricks. This enables flexible adjustment of the space structure above the overflow port according to actual production needs, enhancing the insulation effect or improving heat dissipation. The design of the baffles on both sides of the cut-off gate effectively reduces the entry of cold air into the overflow port, further improving the stability of temperature control. The cover bricks are composed of several bricks whose height, power, and current can be independently adjusted, enabling precise temperature control at different transverse positions of the molten glass. This meets diverse production needs, effectively reduces transverse temperature differences, and improves the quality of the glass plate. Attached Figure Description

[0014] Figure 1 This is a front view of a transverse temperature difference adjustment device for the overflow port of a rolled glass melting furnace according to the present invention; Figure 2 This is a side view of a transverse temperature difference adjustment device for the overflow port of a rolled glass melting furnace according to the present invention. In the attached diagram: 1. Overflow port; 2. Calender; 3. Flame baffle brick; 4. Cut-off gate; 5. Cover brick; 6. Temperature detection mechanism; 7. Electric hoist; 41. Barrier section; 51. Brick body. Detailed Implementation

[0015] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] In the description of this invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] Figure 1 This is a front view of a transverse temperature difference adjustment device for the overflow port of a rolled glass melting furnace according to the present invention; Figure 2 This is a side view of a transverse temperature difference adjustment device for the overflow outlet of a rolled glass melting furnace according to the present invention. Figure 1-2The diagram illustrates a preferred embodiment of a transverse temperature difference adjustment device for the overflow port of a rolled glass melting furnace. The device includes: a flame-blocking brick 3, a shut-off gate 4, and a cover brick 5 arranged sequentially above the overflow port 1 and towards the rolling mill 2. The heights of the flame-blocking brick 3, the shut-off gate 4, and the cover brick 5 are all independently adjustable. The shut-off gate 4 has baffles 41 on both sides, one baffle 41 contacting the flame-blocking brick 3 and the other baffle 41 contacting the cover brick 5. The cover brick 5 is made of an electrically heated material and includes several brick bodies 51 distributed transversely. The height, power, and current of each brick body 51 are independently adjustable. By controlling the height, power, and current of the brick body 51, the temperature of the molten glass at the overflow port 1 directly below the brick body 51 is controlled.

[0019] In this application, by independently adjusting the height of the flame-blocking brick 3, the shut-off gate 4, and the cover brick 5, the spatial structure above the overflow port 1 can be flexibly adjusted according to actual production needs, enhancing the heat preservation effect or improving heat dissipation conditions. The design of the baffles 41 on both sides of the shut-off gate 4 effectively reduces the entry of cold air from the outside into the overflow port 1, further improving the stability of temperature control. The cover brick 5 is composed of several bricks 51 whose height, power, and current can be independently adjusted, enabling precise temperature control at different transverse positions of the molten glass, meeting diverse production needs, effectively reducing transverse temperature differences, and improving the quality of the glass plate.

[0020] Furthermore, as a preferred embodiment, when the temperature of a certain position of the molten glass at the overflow port 1 is high, the temperature of the molten glass at that position is lowered by increasing the height of the brick 51 corresponding to that position or decreasing the power and current supplied to the brick 51 at that position; conversely, when the temperature of a certain position of the molten glass at the overflow port 1 is low, the temperature of the molten glass at that position is increased by decreasing the height of the brick 51 corresponding to that position or increasing the power and current supplied to the brick 51 at that position. Specifically, by adjusting the temperature in reverse according to different positions of the molten glass, precise dynamic control of the molten glass temperature is achieved. By flexibly adjusting the height of the brick 51 or the power supply parameters, the lateral temperature difference of the molten glass can be quickly and effectively balanced, ensuring that the temperature of the molten glass is uniform and stable during the forming process, improving the thickness uniformity and surface flatness of the glass sheet, and reducing quality defects caused by temperature differences.

[0021] Furthermore, as a preferred embodiment, the flame-blocking brick 3, the shut-off gate 4, and each brick 51 are height-adjusted using a set of electric hoists 7 installed on the glass melting furnace. Using electric hoists 7 for height adjustment automates and precisely controls the adjustment process. Operators can remotely control the raising and lowering of the electric hoists 7 through the control system, eliminating the need for manual operation, significantly reducing labor intensity and improving production efficiency. Simultaneously, the precise adjustment capability of the electric hoists 7 ensures that the flame-blocking brick 3, the shut-off gate 4, and the brick 51 accurately reach the set height, providing a guarantee for precise control of the glass melt temperature.

[0022] Furthermore, as a preferred embodiment, the system also includes a temperature detection mechanism 6 and a control cabinet. The temperature detection mechanism 6 detects the multi-row transverse temperature of the molten glass between the overflow port 1 and the rolling mill 2, and transmits this temperature to the control cabinet. The control cabinet then controls the height of the brick 51 at the corresponding position, as well as the power and current applied. The temperature detection mechanism 6 can monitor the multi-row transverse temperature of the molten glass in real time and transmit the data to the control cabinet promptly. Based on the received temperature data, the control cabinet automatically analyzes and issues commands to precisely control the height of the brick 51 at the corresponding position and the power parameters, achieving closed-loop control of temperature regulation. This automated control system greatly improves the timeliness and accuracy of temperature regulation, ensuring that the molten glass temperature is always at its optimal level, effectively improving the stability of the production process and product quality.

[0023] Furthermore, as a preferred embodiment, the temperature detection mechanism 6 is a thermal imager, positioned above the overflow port 1 and between the cover brick 5 and the rolling mill 2. The thermal imager features non-contact, large-area, and rapid detection capabilities, enabling real-time acquisition of temperature distribution images on the surface of the molten glass, accurately reflecting the multi-row lateral temperature changes. Positioning it above the overflow port 1 and between the cover brick 5 and the rolling mill 2 ensures comprehensive coverage of key areas of the molten glass, guaranteeing the accuracy and completeness of the temperature detection data. Through the cooperation of the thermal imager and the control cabinet, real-time monitoring and precise adjustment of the molten glass temperature are achieved.

[0024] Furthermore, as a preferred embodiment, each electric hoist 7 is equipped with a stroke sensor to identify and record the lifting or lowering distance data of the electric hoist 7, and feed this data back to the control cabinet. The stroke sensor can monitor the lifting distance of the electric hoist 7 in real time and accurately feed the data back to the control cabinet. Based on this data, the control cabinet can accurately determine the actual height position of the flame-blocking brick 3, the cut-off gate 4, and the brick body 51. Furthermore, as a preferred embodiment, the brick body 51 is made of molybdenum disilicide. Molybdenum disilicide has excellent high-temperature stability, electrical conductivity, and thermal conductivity, enabling it to operate stably in high-temperature environments. It also heats up rapidly after being energized, with a stable heating temperature exceeding 1200℃, meeting the temperature requirements at the glass overflow outlet 1. Using molybdenum disilicide as the material for the brick body 51 ensures the reliability and stability of the cover brick 5 at high temperatures, providing continuous and stable thermal radiation to the molten glass, effectively increasing the glass temperature. Simultaneously, its good electrical conductivity facilitates precise control of the energized heating function.

[0025] Furthermore, as a preferred embodiment, the baffle 41 and the shut-off gate 4 are integrally formed. Specifically, the integrally formed structure design makes the connection between the baffle 41 and the shut-off gate 4 tighter and more secure, reducing the possibility of gaps and further enhancing the sealing and insulation effect above the overflow port 1. This structural design simplifies the installation process, improves the overall strength and stability of the equipment, reduces temperature fluctuations caused by loose parts or gaps, and provides more favorable conditions for precise control of the glass melt temperature.

[0026] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for regulating the transverse temperature difference of molten glass at the overflow outlet of a rolling glass melting furnace, characterized in that, include: A flame-blocking brick, a cut-off gate, and a cover brick are arranged sequentially above the overflow port and facing the direction of the calender, and the heights of the flame-blocking brick, the cut-off gate, and the cover brick are all independently adjustable; Both sides of the cut-off gate are formed with a baffle, one of which contacts the flame-blocking brick and the other baffle contacts the cover brick; The cover plate brick is made of an electrically heated material. The cover plate brick includes several bricks distributed in a horizontal direction. The height, power and current of each brick can be independently adjusted. By controlling the height, power and current of the brick, the temperature of the molten glass at the overflow port located directly below the brick can be controlled.

2. The transverse temperature difference adjustment device for the overflow port of a rolled glass melting furnace according to claim 1, characterized in that, When the temperature of the molten glass at a certain position in the overflow port is high, the temperature of the molten glass at that position can be reduced by increasing the height of the brick corresponding to that position or reducing the power and current passing through the brick at that position. When the temperature of the molten glass at a certain location in the overflow port is low, the temperature of the molten glass at that location can be increased by reducing the height of the brick corresponding to that location or by increasing the power and current supplied to the brick at that location.

3. The transverse temperature difference adjustment device for the overflow port of a rolled glass melting furnace according to claim 1, characterized in that, The flame-blocking brick, the cutting-off gate, and each of the bricks are height-adjusted by a set of electric hoists installed on the glass melting furnace.

4. The transverse temperature difference adjustment device for the overflow port of a rolled glass melting furnace according to claim 3, characterized in that, It also includes a temperature detection mechanism and a control cabinet. The temperature detection mechanism is used to detect the multi-row transverse temperature of the molten glass between the overflow port and the rolling mill, and transmits the temperature to the control cabinet so that the control cabinet controls the height of the brick at the corresponding position as well as the power and current.

5. The transverse temperature difference adjustment device for the overflow port of a rolling glass melting furnace according to claim 4, characterized in that, The temperature detection mechanism is a thermal imager, which is located above the overflow port and between the cover brick and the calender.

6. The transverse temperature difference adjustment device for the overflow port of a rolling glass melting furnace according to claim 4, characterized in that, Each of the electric hoists is equipped with a stroke sensor to identify and record the lifting or lowering distance data of the electric hoist, and to feed the data back to the control cabinet.

7. The transverse temperature difference adjustment device for the overflow port of a rolled glass melting furnace according to claim 1, characterized in that, The brick is made of molybdenum disilicide.

8. The transverse temperature difference adjustment device for the overflow port of a rolled glass melting furnace according to claim 1, characterized in that, The blocking part and the cutting-off gate are integrally formed.

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