Discharging device of glass kiln

Abstract

The invention belongs to the technical field of substrate glass, and particularly relates to a glass kiln discharge device which comprises a discharge pipe made of platinum group materials, a first electrode, a second electrode, a first conductive connecting part, a second conductive connecting part and a heat preservation structure, and the discharge pipe is used for being connected with a brick body discharge hole of a glass kiln; the first electrode and the second electrode are electrically connected with the discharge pipe; the first conductive connecting part and the second conductive connecting part are used for being connected with an external power supply, so that current passes through the discharge pipe to generate joule heat so as to heat glass liquid in the discharge pipe; and the heat preservation structure covers the outer side of the discharge pipe. The traditional complex operation mode of heating and cooling the plug depending on an external combustion gun is abandoned, the self-heating function is achieved, the material discharging preparation time is remarkably shortened, and the manual intervention intensity is reduced; and meanwhile, the temperature and the flow of the discharged material are accurately and continuously adjusted in an electric control mode, and the safety, the controllability and the efficiency of the discharging process are improved.

Description

Technical Field

[0001] This invention belongs to the field of substrate glass technology, and specifically relates to a discharge device for a glass furnace. Background Technology

[0002] In common TFT-LCD substrate glass furnace structures, a brick-type discharge hole is typically provided at the furnace bottom. This hole is used for draining molten glass during furnace shutdown or when removing accumulated stones from the bottom of the furnace. Traditionally, the brick-type discharge hole is a perforated brick structure made of refractory bricks. The perforation extends from the bottom lining bricks to the outside of the furnace bottom, serving as the discharge hole. Additionally, a set of plugs containing cooling water is inserted inside the perforation to cool the molten glass and maintain it in a frozen state, preventing leakage.

[0003] However, when discharging molten glass through this type of brick-shaped discharge hole structure, the lack of self-heating capability necessitates removing the cooling plug beforehand. Furthermore, a flame torch must be used to thoroughly heat the cooled glass within the brick discharge hole until the frozen material reaches the required temperature for discharge, allowing the molten glass to drain smoothly from the furnace. This traditional brick-shaped discharge hole structure is not only time-consuming and labor-intensive during the discharge operation, but also fails to effectively control the flow rate of the molten glass. Summary of the Invention

[0004] The purpose of this application is to provide a discharge device for a glass furnace that not only has sufficient heating capacity to reach the discharge temperature of solidified glass, but also has the function of dynamically controlling the temperature of the discharged molten glass to stabilize the discharge flow rate by changing its own heat output, so as to solve the above-mentioned technical problems.

[0005] This application provides a discharge device for a glass furnace, comprising: A discharge pipe made of platinum group materials, the discharge pipe being used to connect to the discharge holes of the brick body of a glass furnace; A first electrode is disposed at the upper end of the discharge pipe and a second electrode is disposed at the lower end of the discharge pipe, and both the first electrode and the second electrode are electrically connected to the discharge pipe. The first conductive connection component and the second conductive connection component, which are respectively connected to the first electrode and the second electrode, are used to connect to an external power source so that the current passes through the discharge tube to generate Joule heat to heat the glass melt in the discharge tube. An insulation structure is provided to cover the outside of the discharge pipe.

[0006] Optionally, the discharge pipe has a tapered structure with a larger upper diameter and a smaller lower diameter, with the larger upper diameter matching the inner diameter of the discharge hole in the kiln brick body, and gradually tapering towards the smaller lower diameter.

[0007] Optionally, both the first conductive connection component and the second conductive connection component are copper-based plates with a cross-sectional area not less than 10 times the cross-sectional area of ​​the corresponding electrode, which is used to reduce resistance and improve current carrying capacity. The first electrode and the second electrode are made of the same material as the discharge pipe, and together they form a heating circuit.

[0008] Optionally, the insulation structure includes an insulation layer, and a 1-2 cm gap is provided between the insulation layer and the discharge pipe. The gap is filled with buffer particles to form a buffer particle layer, and the thickness of the insulation layer is not less than 5 times the large diameter of the discharge pipe.

[0009] Optionally, the discharge device further includes at least one set of side heating rods, which are embedded in the insulation layer and separated from the discharge pipe by the buffer particle layer, for providing an auxiliary heat source; the side heating rods are connected to an external power source through a side heating connection component.

[0010] Optionally, the discharge device further includes a fixing mechanism and a structural support. The fixing mechanism includes multiple side fixing angle steels that fit against the corner of the insulation layer, multiple side pressing bricks that fit against the outside of the insulation structure and are close to the bottom of the insulation structure, multiple side pressing plates that fit against the outside of the side pressing bricks, and a clamping stud that penetrates the side pressing plates and the side pressing bricks and is fixed to the side fixing angle steels. The clamping studs are screwed with nuts. The side fixing angle steels connect the insulation structure and the structural support. The mounting end of the side heating rod penetrates the side pressing bricks and the side pressing plates. The clamping studs fix the side pressing bricks to the side fixing angle steels through the side pressing plates, thereby fixing the side heating rods and the insulation structure.

[0011] Optionally, the structural support includes a bottom support plate connected to the side fixed angle steel, a plurality of adjusting screws passing through the bottom support plate and fastened by adjusting nuts, and a plurality of support seats fastened to the adjusting screws by adjusting nuts, the support seats being fixedly connected to the furnace bottom beam steel structure.

[0012] Optionally, the side heating rod is a silicon molybdenum rod heater and has a U-shaped structure.

[0013] Optionally, the buffer particles are hollow alumina spheres.

[0014] Optionally, the bottom support plate is fixedly provided with insulating terminal posts for the first conductive connection component and the second conductive connection component.

[0015] Optionally, the discharge device further includes at least two temperature monitoring devices, respectively located at the upper part of the discharge pipe and at the outlet.

[0016] Optionally, the discharge device further includes a joint cooling structure disposed on the top of the insulation structure. The joint cooling structure includes a cooling water channel and a cooling water pipe for cooling the outer area of ​​the joint between the discharge hole of the kiln brick and the discharge pipe.

[0017] Optionally, the platinum group material is an Rh-Pt alloy.

[0018] Optionally, the discharge port of the discharge pipe is provided with a circular cover.

[0019] The beneficial effects of this application are that it eliminates the complex operation method of relying on external combustion gun heating and cooling plugs, and has a self-heating function, significantly shortening the material discharge preparation time and reducing the intensity of manual intervention. Simultaneously, it achieves precise and continuous adjustment of the material discharge temperature and flow rate through electronic control, improving the safety, controllability, and efficiency of the material discharge process, making it particularly suitable for TFT-LCD substrate glass production scenarios with high requirements for process stability. Furthermore, platinum group materials possess excellent high-temperature corrosion resistance and electrical conductivity, ensuring long-term reliable operation of the device in a high-temperature molten glass environment. Attached Figure Description

[0020] Figure 1 A schematic diagram of the discharge device for the glass furnace provided in this application in use on the glass furnace; Figure 2 A schematic diagram of the material discharge device for the glass furnace provided in this application; Figure 3 A cross-sectional structural schematic diagram of the discharge device for the glass furnace provided in this application; Figure 4 A side view schematic diagram of the discharge device for the glass furnace provided in this application; Figure 5 This is a schematic diagram of the structure of the discharge pipe provided in this application; Figure 6 This is a schematic diagram of the side heating rod provided in this application.

[0021] In the diagram: 1. Furnace bottom paving bricks; 2. Brick discharge hole; 3. Three layers of bricks at the furnace bottom; 4. Two layers of bricks at the furnace bottom; 5. One layer of bricks at the furnace bottom; 6. Steel structure of the furnace bottom crossbeam; 7. Discharge device; 7-1. Discharge pipe; 7-2. Cooling water passage; 7-3. Side fixing angle steel; 7-4. Insulation layer; 7-5. Groove; 7-6. Side heating rod; 7-7. First conductive connection component; 7-8. Second conductive connection component; 7-9. Cooling water pipe. 7-10. Side heating connection component; 7-11. Bottom support plate; 7-12. Insulating terminal post; 7-13. Support base; 7-14. Adjusting screw; 7-15. First electrode; 7-16. Second electrode; 7-17. Buffer particle layer; 7-18. Circular cover; 7-19. Side pressing brick; 7-20. Pressing stud; 7-21. Adjusting nut; 7-22. Side pressure plate; 7-23. Temperature monitoring device. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] like Figures 1-6 As shown, the discharge device for a glass furnace provided in this application includes: The discharge pipe 7-1 is made of platinum group materials and is used to connect to the discharge hole 2 of the brick body of the glass furnace; The first electrode 7-15 at the upper end and the second electrode 7-16 at the lower end of the discharge pipe 7-1 are electrically connected to the discharge pipe 7-1. The first conductive connection component 7-7 and the second conductive connection component 7-8, which are respectively connected to the first electrode 7-15 and the second electrode 7-16, are used to connect to an external power source so that the current passes through the discharge pipe 7-1 to generate Joule heat to heat the glass melt inside the discharge pipe 7-1. The insulation structure is wrapped around the outside of the discharge pipe 7-1.

[0024] The glass furnace discharge device 7 provided in this application utilizes a discharge pipe 7-1 made of platinum group materials as a conductive heating element. By setting electrodes at the upper and lower ends of the discharge pipe 7-1 and connecting it to an external power source, current flows through the discharge pipe 7-1 to generate Joule heat, thereby autonomously and uniformly heating the solidified or low-temperature molten glass inside the pipe. Once the molten glass is heated to its flow temperature, it can be smoothly discharged from the furnace. Simultaneously, by adjusting the current or voltage of the external power source, the heat generation of the discharge pipe 7-1 can be dynamically controlled, thereby precisely regulating the temperature and flowability of the molten glass and achieving stable regulation of the discharge flow rate.

[0025] The discharge device 7 for the glass furnace provided in this application eliminates the complex operation method of relying on external combustion lance heating and cooling plugs, and has a self-heating function, significantly shortening the discharge preparation time and reducing the intensity of manual intervention. Simultaneously, it achieves precise and continuous adjustment of discharge temperature and flow rate through electronic control, improving the safety, controllability, and efficiency of the discharge process, making it particularly suitable for TFT-LCD substrate glass production scenarios with high requirements for process stability. Furthermore, platinum group materials possess excellent high-temperature corrosion resistance and electrical conductivity, ensuring long-term reliable operation of the device in a high-temperature molten glass environment.

[0026] It should be noted that the bottom of the glass kiln, from the inside out, includes the following layers: 1. Bottom paving bricks; 3. Bottom three-layer bricks; 4. Bottom two-layer bricks; 5. Bottom one-layer bricks; and 6. Bottom crossbeam steel structure supporting the bottom one-layer bricks.

[0027] In some possible implementations, such as Figure 3 and 5 As shown, the discharge pipe 7-1 has a conical structure with a larger upper diameter and a smaller lower diameter. The larger upper diameter matches the inner diameter of the discharge hole 2 of the kiln brick body, and gradually tapers towards the smaller lower diameter.

[0028] Specifically, the discharge pipe 7-1 adopts a tapered structure design with a larger upper diameter and a smaller lower diameter. Its upper diameter closely matches the inner diameter of the discharge hole pre-reserved in the furnace bottom bricks, ensuring stable installation and effective sealing to prevent leakage of molten glass from the interface. The discharge pipe 7-1 gradually narrows axially from top to bottom, forming a downward-narrowing channel. This not only helps guide the molten glass smoothly to the outlet, reducing the risk of stagnation and localized cooling, but also allows for some regulation of the molten glass flow rate through cross-sectional changes. Combined with the Joule heat generated by electric heating, this further enhances the stability and controllability of the discharge process. Simultaneously, the tapered structure facilitates reliable connection with the upper and lower electrodes and is beneficial for the insulation structure, thus improving the overall thermal efficiency and service life of the device.

[0029] In some possible implementations, the first conductive connection component 7-7 and the second conductive connection component 7-8 are both copper-based plates with a cross-sectional area not less than 10 times the cross-sectional area of ​​the corresponding electrode, which are used to reduce resistance and improve current carrying capacity. The first electrode 7-15 and the second electrode 7-16 are made of the same material as the discharge pipe 7-1, and together they form a heating circuit.

[0030] Specifically, both the first conductive connection component 7-7 and the second conductive connection component 7-8 are made of highly conductive copper-based plates, and their cross-sectional area is designed to be no less than 10 times the cross-sectional area of ​​the first electrode 7-15 and the second electrode 7-16 connected to them. This significantly reduces the contact resistance and Joule heat loss at the connection points, ensuring that the large current is efficiently and stably transmitted to the discharge tube 7-1. At the same time, the first electrode 7-15 and the second electrode 7-16 are made of the same platinum group materials as the discharge tube 7-1. The three together form a continuous, low-impedance heating circuit, so that the current mainly generates the required Joule heat in the body of the discharge tube 7-1, thereby achieving efficient and uniform heating of the glass melt. This not only ensures the heating efficiency but also avoids the failure of the electrodes or connection components due to overheating, improving the overall reliability and service life of the device.

[0031] In some possible implementations, such as Figure 3 As shown, the insulation structure includes an insulation layer 7-4, and a 1-2 cm gap is provided between the insulation layer 7-4 and the discharge pipe 7-1. The gap is filled with buffer particles to form a buffer particle layer 7-17. The thickness of the insulation layer 7-4 is not less than 5 times the major diameter of the discharge pipe 7-1.

[0032] Specifically, the buffer particle layer 7-17 not only effectively absorbs the mechanical stress caused by the difference in thermal expansion, preventing the discharge pipe 7-1 from cracking or deforming due to rigid constraints under high-temperature cyclic conditions, but also further enhances the heat insulation performance. At the same time, the thickness of the insulation layer 7-4 is not less than 5 times the large diameter of the discharge pipe 7-1, which significantly reduces the loss of heat to the external environment, improves the overall thermal efficiency, and enables the discharge pipe 7-1 to maintain a more uniform and stable heating temperature. This is conducive to the continuous and controllable discharge of molten glass, reduces energy consumption, and extends the service life of the device.

[0033] It should be noted that the insulation layer 7-4 can be composed of insulation bricks.

[0034] In some possible implementations, the discharge device 7 further includes at least one set of side heating rods 7-6, which are embedded in the insulation layer 7-4 and buffered by the particle layer 7-17 between the discharge pipe 7-1, for providing an auxiliary heat source; the side heating rods 7-6 are connected to an external power source through the side heating connection component 7-10.

[0035] Specifically, the side heating rod 7-6 is made of high-temperature resistant resistive material and is embedded in the groove 7-5 of the insulation layer 7-4, maintaining a certain distance from the discharge pipe 7-1. A buffer particle layer 7-17 filled with buffer particles is placed in the middle, which avoids local overheating caused by direct thermal contact and provides uniform auxiliary heat to the discharge pipe 7-1 through radiation and convection. The side heating rod 7-6 is led out to an external power source through a dedicated side heating connection component 7-10, and its power output can be controlled independently. It is activated when the main heating circuit (joule heat of the discharge pipe 7-1) is insufficient to maintain the required temperature, and is used for rapid heating, compensating for heat loss, or preheating the system during the start-up phase, thereby improving the thermal response speed and operational stability of the entire discharge device 7.

[0036] In some possible implementations, such as Figure 2 and 4 As shown, the discharge device 7 also includes a fixing mechanism and a structural support. The fixing mechanism includes multiple side fixing angle steels 7-3 that are attached to the corner of the insulation layer 7-4, multiple side pressing bricks 7-19 that are attached to the outside of the insulation structure and close to the bottom of the insulation structure, multiple side pressing plates 7-22 that are attached to the outside of the side pressing bricks 7-19, and a clamping stud 7-20 that passes through the side pressing plates 7-22 and the side pressing bricks 7-19 and is fixed to the side fixing angle steel 7-3. The clamping stud 7-20 is screwed with a nut. The side fixing angle steel 7-3 connects the insulation structure and the structural support. The mounting end of the side heating rod 7-6 passes through the side pressing bricks 7-19 and the side pressing plates 7-22. The clamping stud 7-20 fixes the side pressing bricks 7-19 to the side fixing angle steel 7-3 through the side pressing plates 7-22, which is used to fix the side heating rod 7-6 and the insulation structure.

[0037] Specifically, multiple side-fixing angle steels 7-3 are attached to the corner positions of the insulation layer 7-4 and serve as load-bearing components connecting the insulation structure and the external structural support. Side-pressing bricks 7-19 and side-pressing plates 7-22 are sequentially installed on the outer side of the bottom of the insulation structure. The two are tightly attached and connected to the side-fixing angle steels 7-3 through a clamping stud 7-20. The end of the clamping stud 7-20 is fitted with a nut to apply pre-tightening force, thereby firmly clamping the insulation structure. The installation end of the side heating rod 7-6 passes through the reserved holes on the side-pressing brick 7-19 and the side-pressing plate 7-22. Its position is limited and fixed by the clamping assembly, which ensures that the side heating rod 7-6 does not shift or loosen during high-temperature operation and avoids mechanical damage caused by thermal expansion.

[0038] In some possible implementations, such as Figure 3As shown, the structural support includes a bottom support plate 7-11 connected to the side fixing angle steel 7-3, multiple adjusting screws 7-14 passing through the bottom support plate 7-11 and fastened by adjusting nuts 7-21, and multiple support seats 7-13 fastened to the adjusting screws 7-14 by adjusting nuts 7-21. The support seats 7-13 are fixedly connected to the furnace bottom crossbeam steel structure 6.

[0039] Specifically, the bottom support plate 7-11 is rigidly connected to the side fixing angle steel 7-3, serving as the load-bearing base for the entire discharge device 7. Multiple adjusting screws 7-14 vertically penetrate the bottom support plate 7-11, and are finely adjusted and locked using two sets of adjusting nuts 7-21. The lower end of the adjusting screws 7-14 is connected to the support base 7-13, which is then firmly welded or bolted to the crossbeam steel structure at the bottom of the kiln. This not only anchors the discharge device 7 stably to the kiln body, but also allows for precise control of the installation height and levelness of the discharge pipe 7-1 relative to the discharge hole 2 in the kiln bottom brick by adjusting the adjusting nuts 7-21. This effectively compensates for manufacturing and installation errors, ensuring good alignment and reliable sealing between the discharge pipe 7-1 and the kiln brick hole, while avoiding stress concentration caused by thermal deformation or settlement, thus improving the stability and safety of the device operation.

[0040] In some possible implementations, such as Figure 6 As shown, the side heating rod 7-6 is a silicon molybdenum rod heater and has a U-shaped structure.

[0041] Specifically, the two ends serve as electrical connection points, extending from the outside of the insulation layer 7-4 and passing through the side pressing bricks 7-19 and the side pressing plate 7-22 before connecting to the side heating connection component 7-10. The U-shaped structure creates a large heat radiation area within the insulation layer 7-4, effectively improving the heating uniformity of the discharge pipe 7-1 circumferentially. Simultaneously, the silicon molybdenum rod possesses excellent high-temperature oxidation resistance and stable resistance characteristics, enabling long-term reliable operation in glass furnace environments above 1600℃. Furthermore, the U-shaped design facilitates installation and fixation around the buffer particle layer 7-17, maintaining a safe distance from the discharge pipe 7-1 to avoid localized overheating or arcing risks. While providing an efficient auxiliary heat source, it also balances structural compactness and flexibility in thermal field control.

[0042] In some possible implementations, the buffer particles are hollow alumina spheres.

[0043] Specifically, the buffer particles are made of hollow alumina spheres, which have low thermal conductivity, high temperature resistance (withstanding temperatures above 1700℃) and excellent chemical stability. They can form a lightweight, porous buffer particle layer 7-17 in the gap between the discharge pipe 7-1 and the insulation layer 7-4. This not only effectively absorbs the thermal expansion stress of the discharge pipe 7-1 caused by Joule heating or fluctuations in the temperature of the molten glass, preventing the insulation layer 7-4 or the discharge pipe 7-1 from cracking due to mechanical constraints, but also significantly enhances the thermal insulation performance and reduces heat loss to the outside. At the same time, the spherical structure of the hollow alumina spheres gives them good fluidity and filling properties, allowing them to be evenly distributed in the gaps, avoiding local hard point contact, and further improving the structural reliability and thermal stability of the device under high-temperature cyclic conditions.

[0044] The average particle size of the hollow alumina spheres is 0.2 mm to 1 mm.

[0045] In some possible implementations, the bottom support plate 7-11 is fixedly provided with an insulating terminal post 7-12 along with the first conductive connection component 7-7 and the second conductive connection component 7-8.

[0046] Specifically, the insulating terminal post 7-12 is made of high-temperature resistant and high-insulation ceramic material (such as alumina or boron nitride), which ensures reliable electrical isolation between the conductive connection component and the metal support structure to prevent current leakage or short circuit, and maintains structural stability and mechanical strength in high-temperature environments.

[0047] In some possible implementations, the discharge device 7 also includes at least two temperature monitoring devices 7-23, respectively located at the upper part of the discharge pipe 7-1 and at the outlet.

[0048] Specifically, the upper temperature monitoring device 7-23 is used to sense the initial temperature of the molten glass entering the discharge pipe 7-1 on the furnace side in real time, while the temperature monitoring device 7-23 at the outlet is used to monitor the actual temperature of the molten glass that is about to flow out.

[0049] More specifically, the temperature monitoring device 7-23 can be a thermocouple wire, which is arranged at key temperature measuring points on the upper part of the discharge pipe 7-1 and at the outlet. Its measuring end is close to or embedded in the outer wall of the discharge pipe 7-1 (or inserted into the near-wall area through a protective sleeve) to accurately sense the temperature changes of the glass melt at different locations. The lead wire of the thermocouple wire passes through the insulation layer 7-4 and is led out through the insulating sealing structure to connect to the external temperature acquisition and control system.

[0050] In some possible implementations, the discharge device 7 also includes a joint cooling structure located on top of the insulation structure. The joint cooling structure includes a cooling water passage 7-2 and a cooling water pipe 7-9, which are used to cool the outer area of ​​the joint between the discharge hole 2 of the kiln brick body and the discharge pipe 7-1.

[0051] In some possible implementations, the platinum group materials are Rh-Pt alloys.

[0052] Specifically, Rh-Pt alloys can be selected from PtRh10, PtRh13, PtRh20, or PtRh30. These Rh-Pt alloys possess excellent high-temperature strength, resistance to molten glass corrosion, and stable electrical properties, maintaining structural integrity and conductivity even in molten glass environments above 1600℃. Simultaneously, they exhibit high resistivity and good Joule heat conversion efficiency, making them suitable for use as self-heating elements. Furthermore, their coefficient of thermal expansion is well-matched with commonly used kiln refractory materials, reducing the risk of thermal stress cracking. In addition, these Rh-Pt alloys do not readily react with molten glass at high temperatures, effectively preventing contamination of the glass composition.

[0053] In some possible implementations, the discharge port of the discharge pipe 7-1 is provided with a circular cover 7-18.

[0054] Specifically, the circular cover 7-18 can be made of stainless steel, nickel-based alloy or ceramic material, and has a cylindrical structure that surrounds the discharge port. Its main functions include: first, guiding and concentrating the high-temperature glass melt flow to prevent splashing or scattering during discharge and ensure that the glass melt flows steadily into the receiving container; second, forming a local thermal shielding zone to slow down the heat dissipation rate of the glass melt at the discharge port and avoid outlet blockage due to rapid cooling.

[0055] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0056] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A discharge device for a glass furnace, characterized in that, include: A discharge pipe (7-1) made of platinum group materials is used to connect to the discharge hole (2) of the brick body of the glass furnace. The first electrode (7-15) at the upper end and the second electrode (7-16) at the lower end of the discharge pipe (7-1) are electrically connected to the discharge pipe (7-1). The first conductive connection component (7-7) and the second conductive connection component (7-8), which are respectively connected to the first electrode (7-15) and the second electrode (7-16), are used to connect to an external power source so that the current passes through the discharge pipe (7-1) to generate Joule heat to heat the glass melt inside the discharge pipe (7-1). The heat insulation structure is wrapped around the outside of the discharge pipe (7-1).

2. The discharge device for a glass furnace according to claim 1, characterized in that, The discharge pipe (7-1) has a tapered structure with a larger upper diameter and a smaller lower diameter. The upper large diameter matches the inner diameter of the discharge hole (2) of the kiln brick body and gradually shrinks towards the lower small diameter.

3. The discharge device for a glass furnace according to claim 1, characterized in that, The first conductive connection component (7-7) and the second conductive connection component (7-8) are both copper-based plates with a cross-sectional area not less than 10 times the cross-sectional area of ​​the corresponding electrode. They are used to reduce resistance and improve current carrying capacity. The first electrode (7-15) and the second electrode (7-16) are made of the same material as the discharge pipe (7-1) and together form a heating circuit.

4. The discharge device for a glass furnace according to claim 1, characterized in that, The insulation structure includes an insulation layer (7-4), and there is a 1-2 cm gap between the insulation layer (7-4) and the discharge pipe (7-1). The gap is filled with buffer particles to form a buffer particle layer (7-17). The thickness of the insulation layer (7-4) is not less than 5 times the major diameter of the discharge pipe (7-1).

5. The discharge device for a glass furnace according to claim 4, characterized in that, It also includes at least one set of side heating rods (7-6), which are embedded in the insulation layer (7-4) and separated from the discharge pipe (7-1) by the buffer particle layer (7-17) to provide an auxiliary heat source; the side heating rods (7-6) are connected to an external power source through a side heating connection component (7-10).

6. The discharge device for a glass furnace according to claim 5, characterized in that, It also includes a fixing mechanism and a structural support. The fixing mechanism includes multiple side fixing angle steels (7-3) that are attached to the corner of the insulation layer (7-4), multiple side pressing bricks (7-19) that are attached to the outside of the insulation structure and close to the bottom of the insulation structure, multiple side pressing plates (7-22) that are attached to the outside of the side pressing bricks (7-19), and a clamping stud (7-20) that passes through the side pressing plates (7-22) and the side pressing bricks (7-19) and is fixed to the side fixing angle steels (7-3). The clamping stud (7-20) is screwed with a nut. The side fixing angle steel (7-3) connects the insulation structure and the structural support. The mounting end of the side heating rod (7-6) passes through the side pressing brick (7-19) and the side pressing plate (7-22). The clamping stud (7-20) fixes the side pressing brick (7-19) to the side fixing angle steel (7-3) through the side pressing plate (7-22), which is used to fix the side heating rod (7-6) and the insulation structure.

7. The discharge device for a glass furnace according to claim 6, characterized in that, The structural support includes a bottom support plate (7-11) connected to the side fixed angle steel (7-3), a plurality of adjusting screws (7-14) passing through the bottom support plate (7-11) and fastened by adjusting nuts (7-21), and a plurality of support seats (7-13) fastened to the adjusting screws (7-14) by adjusting nuts (7-21). The support seats (7-13) are fixedly connected to the furnace bottom crossbeam steel structure (6).

8. The discharge device for a glass furnace according to claim 7, characterized in that, The side heating rod (7-6) is a silicon molybdenum rod heater and has a U-shaped structure; And / or, the buffer particles are hollow alumina spheres; And / or, the bottom support plate (7-11) is fixedly provided with an insulating terminal post (7-12) along with the first conductive connection component (7-7) and the second conductive connection component (7-8).

9. The discharge device for a glass furnace according to claim 1, characterized in that, It also includes at least two temperature monitoring devices (7-23), which are respectively installed at the top of the discharge pipe (7-1) and at the outlet.

10. The discharge device for a glass furnace according to any one of claims 1 to 9, characterized in that, It also includes a joint cooling structure set on the top of the insulation structure, the joint cooling structure including a cooling water channel (7-2) and a cooling water pipe (7-9) for cooling the outer area of ​​the joint between the kiln brick discharge hole (2) and the discharge pipe (7-1); And / or, the platinum group material is an Rh-Pt alloy; And / or, the discharge port of the discharge pipe (7-1) is provided with a circular cover (7-18).

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