Molten glass stirring structure and molten glass stirring system

Abstract

The utility model provides a molten glass stirring structure and a molten glass stirring system, the molten glass stirring structure comprises a platinum tube cooling section, a platinum tube stirring section, a primary stirring structure fixedly arranged in the platinum tube cooling section and a secondary stirring structure rotatably arranged in the platinum tube stirring section, the first-stage stirring structure comprises a center rod extending in the length direction of the platinum tube cooling section and a plurality of spiral stirring blades which are fixedly connected to the center rod and spirally extend in the length direction of the platinum tube cooling section. According to the molten glass stirring structure disclosed by the utility model, the spiral stirring structure is arranged in the platinum tube cooling section, so that the molten glass is passively stirred and homogenized for the first time through the spiral stirring blades and then stirred and homogenized for the second time through the platinum tube stirring section at the rear end in the flowing process, and the homogenizing effect is further improved through the synergistic effect of the two stirring and homogenizing processes; the occurrence frequency of bubbles and stripes is greatly reduced, the homogenizing time is effectively shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of substrate glass production technology, specifically relating to a glass melt stirring structure and a glass melt stirring system. Background Technology

[0002] In the production of substrate glass, melting homogenization is a crucial step, especially for high-flow-rate substrate glass. In existing substrate glass production technologies, molten glass passes through a platinum tube cooling section before entering a stirring section for agitation. However, due to the limited homogenization capacity of the stirring rods, defects such as bubbles and streaks often occur. These problems not only affect the optical properties of the glass products but can also lead to a decrease in the yield rate of the production line and increase production costs. To enhance the homogenization effect during the flow of molten glass, it is necessary to improve the existing molten glass stirring equipment. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a glass melt stirring structure and system that can achieve efficient homogenization of molten glass.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] Based on one aspect of this utility model, a glass melt stirring structure is provided, including a platinum tube cooling section, a platinum tube stirring section, a primary stirring structure fixed in the platinum tube cooling section, and a rotatable secondary stirring structure disposed in the platinum tube stirring section. The primary stirring structure includes a central rod extending along the length direction of the platinum tube cooling section and a plurality of spiral stirring blades fixed to the central rod and extending spirally along the length direction of the platinum tube cooling section.

[0006] In one embodiment, the spiral parameters of each of the spiral stirring blades are the same and they are evenly distributed on the central rod.

[0007] In one embodiment, the number of spiral stirring blades is 3 to 5, the spiral length is 1 to 2 meters, and the number of spiral turns is 4 to 6. The selection of the number of spiral stirring blades depends on the flow rate and viscosity of the molten glass. While ensuring the stirring effect, it avoids excessive stirring that could cause temperature fluctuations in the molten glass. A reasonable spiral length and number of turns can ensure that the molten glass is fully stirred and homogenized when passing through the spiral stirring structure.

[0008] In one embodiment, the spiral stirring blade is made of platinum-rhodium alloy with a thickness of 2-5 mm. Platinum-rhodium alloy has excellent high-temperature resistance and corrosion resistance, which can ensure that the spiral stirring blade can work stably for a long time in high-temperature environments, while the appropriate thickness can ensure the strength and rigidity of the spiral stirring blade and prevent deformation during stirring.

[0009] In one embodiment, the secondary stirring structure includes a rotating rod and a stirring bar fixed on the rotating rod, wherein the length direction of the rotating rod is perpendicular to the length direction of the central rod.

[0010] In one embodiment, the stirring rod includes two rectangular stirring frames, which are centrally fixed on the rotating rod and the planes containing the two rectangular stirring frames are perpendicular or intersecting.

[0011] In one embodiment, the primary stirring structure is welded to the middle and rear section of the platinum tube cooling section.

[0012] According to another aspect of this utility model, a glass melt stirring system is provided, characterized in that it includes a glass melt stirring structure as described in any one of claims, a platinum channel cooling system, a secondary stirring drive mechanism, a first temperature sensor, a second temperature sensor, and a main controller. The cooling pipes of the platinum channel cooling system are arranged around the cooling section of the platinum tube. The drive end of the secondary stirring drive mechanism is connected to the secondary stirring structure. The first temperature sensor is located on the surface of the cooling section of the platinum tube and is positioned before the primary stirring structure. The second temperature sensor is located on the surface of the cooling section of the platinum tube and is positioned after the primary stirring structure. The main controller is communicatively connected to the platinum channel cooling system, the secondary stirring drive mechanism, the first temperature sensor, and the second temperature sensor.

[0013] In one embodiment, a third temperature sensor is also included on the surface of the platinum tube stirring section, and the third temperature sensor is communicatively connected to the main controller.

[0014] Compared with existing technologies, the glass melt stirring structure and system of this invention incorporates a spiral stirring structure within the platinum tube cooling section. This allows the glass melt to undergo passive stirring during its flow, effectively reducing the frequency of bubble and streak formation. Furthermore, it helps to reduce the temperature difference between the glass melt near the center and near the tube wall within the platinum tube cooling section, significantly improving the homogenization effect and enhancing the quality and yield of glass products. After the glass melt undergoes passive stirring and homogenization once in the platinum tube cooling section by the spiral stirring blades, it undergoes secondary stirring and homogenization in the rear platinum tube stirring section. The primary and secondary stirring and homogenization processes work synergistically to further enhance the homogenization effect, effectively shortening the homogenization time and increasing production efficiency. The overall structural design is simple and reasonable, with low installation and maintenance costs. It is applicable to the production of substrate glass of different thicknesses and flow rates, exhibiting strong adaptability, good versatility and flexibility, and promising application prospects. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an embodiment of a glass melt stirring structure according to the present invention;

[0016] Figure 2 for Figure 1 A three-dimensional structural diagram of the primary stirring structure in the glass melt stirring structure shown.

[0017] Figure 3 for Figure 2 The diagram shows a frontal view of the primary stirring structure.

[0018] Explanation of reference numerals in the attached diagram: 1 Platinum tube cooling section, 2 Platinum tube stirring section, 3 Primary stirring structure, 31 Central rod, 33 Spiral stirring blade, 4 Secondary stirring structure, 41 Rotating rod, 43 Stirring rod. Detailed Implementation

[0019] Example 1

[0020] See also Figure 1-3This embodiment provides a glass melt stirring structure for substrate glass production, including a platinum tube cooling section 1, a platinum tube stirring section 2, a primary stirring structure 3 fixed within the platinum tube cooling section 1, and a rotatable secondary stirring structure 4 located within the platinum tube stirring section 2. The primary stirring structure 3 is a spiral stirring structure, including a central rod 31 extending along the length of the platinum tube cooling section 1 and several spiral stirring blades 33 fixed to the central rod 31 and extending spirally along the length of the platinum tube cooling section 1. All spiral stirring blades 33 have the same spiral parameters and are welded to the middle and rear sections of the platinum tube cooling section 1. The number of spiral stirring blades 33 is 3 to 5, evenly distributed on the central rod 31. The spiral stirring blades 33 are made of platinum-rhodium alloy, with a platinum content of 65% to 80% and a rhodium content of 20% to 30%. The blade thickness is 2 to 5 mm, the spiral length is 1 to 2 meters, and the number of spiral turns is 4 to 6. The primary stirring structure 3 is used to perform the first stirring and homogenization of the molten glass. The design of the spiral stirring blades 33 causes eddies and shear forces to be generated when the molten glass passes through each blade, thereby effectively reducing the formation of bubbles and streaks, enhancing the passive homogenization effect of the molten glass during the cooling process of the platinum tube, and significantly improving the glass quality.

[0021] In this embodiment, the secondary stirring structure 4 includes a rotating rod 41 and a stirring rod 43 fixed on the rotating rod 41. The length direction of the rotating rod 41 is perpendicular to the length direction of the central rod 31. The stirring rod 43 includes two rectangular stirring frames, which are centrally fixed on the rotating rod 41, and the planes containing the two rectangular stirring frames are perpendicular or intersecting. The secondary stirring structure 4 is used to perform secondary stirring and homogenization of the molten glass.

[0022] In this embodiment, the molten glass flows within a platinum tube and undergoes passive agitation and homogenization upon passing through the spiral stirring blades 33. The temperature of the molten glass is controlled between 1530°C and 1480°C when entering the spiral stirring blades 33 of the primary stirring structure 3, and between 1430°C and 1380°C when exiting the primary stirring structure 3. After passing through the spiral stirring structure, the molten glass undergoes secondary agitation and homogenization through the rear platinum tube stirring section 2. The primary and secondary agitation and homogenization processes work synergistically to further enhance the homogenization effect, effectively shorten the homogenization time, and improve production efficiency.

[0023] By incorporating a spiral stirring structure within the cooling section of the platinum tube, the molten glass undergoes passive agitation during its flow, significantly improving the homogenization effect. This effectively reduces the frequency of bubbles and streaks and helps lower the temperature difference between the molten glass near the center and near the tube wall, thus improving the quality and yield of glass products. The spiral stirring structure is simple and reasonable in design, with low installation and maintenance costs. It is applicable to the production of substrate glass of varying thicknesses and flow rates, exhibiting strong adaptability, good versatility and flexibility, and promising application prospects.

[0024] Example 2

[0025] This embodiment provides a glass melt stirring system, including the glass melt stirring structure of Embodiment 1, a platinum channel cooling system, a secondary stirring drive mechanism, a first temperature sensor, a second temperature sensor, a third temperature sensor, and a main controller. The cooling pipes of the platinum channel cooling system are arranged around the platinum tube cooling section 1. The drive end of the secondary stirring drive mechanism is connected to the secondary stirring structure 4. The first temperature sensor is located on the surface of the platinum tube cooling section 1 and is located before the primary stirring structure 3. The second temperature sensor is located on the surface of the platinum tube cooling section 1 and is located after the primary stirring structure 3. The third temperature sensor is located on the surface of the platinum tube stirring section 2. The main controller is communicatively connected to the platinum channel cooling system, the secondary stirring drive mechanism, the first temperature sensor, the second temperature sensor, and the third temperature sensor.

[0026] In this embodiment, the platinum tube is made of high-purity platinum material to ensure its stability and corrosion resistance under high-temperature environments. The inner diameter of the platinum tube is selected appropriately based on the flow rate and viscosity of the molten glass to ensure smooth flow. An external cooling system controls the temperature distribution within the platinum tube, ensuring that the molten glass maintains uniform fluidity during cooling.

[0027] In this embodiment, the first temperature sensor is located on the surface of the cooling section 1 of the platinum tube and before the location of the primary stirring structure 3. The second temperature sensor is located on the surface of the cooling section 1 of the platinum tube and after the location of the primary stirring structure 3. Through communication and coordination between the main controller, the platinum channel cooling system, the first temperature sensor, and the second temperature sensor, the temperature of the molten glass entering the spiral stirring structure is controlled at 1530℃~1480℃, and the temperature of the molten glass exiting the spiral stirring structure is controlled at 1430℃~1380℃. For example, when the data transmitted to the main controller by the first or second temperature sensor is not within the required temperature control range, the main controller sends a command to the external cooling system to control the operation of the external cooling system to ensure that the temperature distribution inside the platinum tube is uniform and meets the requirements, and to prevent local overcooling or overheating of the molten glass during the cooling process.

[0028] In this embodiment, the platinum tube stirring section 2 uses an electronically displayed glass platinum channel stirring tank to ensure homogenization of the molten glass. The secondary stirring drive mechanism and the third temperature sensor are both communicatively connected to the main controller. The main controller determines the stirring parameters of the stirring tank based on the properties of the molten glass or the data from the third temperature sensor and sends them to the secondary stirring drive mechanism. The secondary stirring drive mechanism adjusts the stirring speed and time of the electronically displayed glass platinum channel stirring tank to ensure homogenization. The molten glass, homogenized by the first spiral stirring in the platinum tube cooling section 1, continues to flow into the rear platinum tube stirring section 2, where it undergoes secondary stirring and homogenization by the stirring rod 43. The design of the secondary stirring structure 4 ensures that the molten glass has undergone preliminary homogenization before entering the stirring tank, further improving the homogenization effect.

[0029] The glass melt stirring system of this embodiment incorporates a spiral stirring structure within the platinum tube cooling section. This allows the molten glass to undergo passive stirring during its flow. By employing a first temperature sensor and a second temperature sensor, the temperature of the molten glass entering the spiral stirring blades is controlled between 1530℃ and 1480℃, and the temperature exiting the spiral stirring blades is controlled between 1430℃ and 1380℃. This significantly improves the homogenization effect of the molten glass, effectively reducing the frequency of bubbles and streaks, and improving the quality and yield of glass products. Furthermore, after the molten glass undergoes passive stirring and homogenization once in the platinum tube cooling section via the spiral stirring blades, it undergoes secondary stirring and homogenization in the subsequent platinum tube stirring section. The synergistic effect of the primary and secondary stirring and homogenization processes further enhances the homogenization effect, effectively shortens the homogenization time, and improves production efficiency.

[0030] 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.

[0031] 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 glass melt stirring structure, characterized by, It includes a platinum tube cooling section (1), a platinum tube stirring section (2), a primary stirring structure (3) fixed in the platinum tube cooling section (1), and a secondary stirring structure (4) rotatable in the platinum tube stirring section (2). The primary stirring structure (3) includes a central rod (31) extending along the length of the platinum tube cooling section (1) and several spiral stirring blades (33) fixed to the central rod (31) and spirally extending along the length of the platinum tube cooling section (1).

2. The glass melt agitation structure of claim 1, wherein, The spiral parameters of each of the spiral stirring blades (33) are the same and are equally distributed on the central rod (31).

3. The glass melt agitation structure of claim 2, wherein, The number of spiral stirring blades (33) is 3 to 5, the spiral length is 1 to 2 meters, and the number of spiral turns is 4 to 6.

4. The glass melt agitation structure of any of claims 1-3, wherein, The spiral stirring blade (33) is made of platinum-rhodium alloy and has a thickness of 2-5 mm.

5. The glass melt agitation structure of any of claims 1-3, wherein, The secondary stirring structure (4) includes a rotating rod (41) and a stirring rod (43) fixed on the rotating rod (41). The length direction of the rotating rod (41) is perpendicular to the length direction of the central rod (31).

6. The glass melt agitation structure of claim 5, wherein, The stirring rod (43) includes two rectangular stirring frames, which are fixed in the center on the rotating rod (41) and the planes in which the two rectangular stirring frames are located are perpendicular or intersecting.

7. The glass melt agitation structure of any of claims 1-3, wherein, The primary stirring structure (3) is welded to the middle and rear section of the platinum tube cooling section (1).

8. A glass melt stirring system characterized by, The system includes a glass melt stirring structure as described in any one of claims 1-7, a platinum channel cooling system, a secondary stirring drive mechanism, a first temperature sensor, a second temperature sensor, and a main controller. The cooling pipes of the platinum channel cooling system are arranged around the platinum tube cooling section (1). The drive end of the secondary stirring drive mechanism is connected to the secondary stirring structure (4). The first temperature sensor is located on the surface of the platinum tube cooling section (1) and is located before the location of the primary stirring structure (3). The second temperature sensor is located on the surface of the platinum tube cooling section (1) and is located after the location of the primary stirring structure (3). The main controller is communicatively connected to the platinum channel cooling system, the secondary stirring drive mechanism, the first temperature sensor, and the second temperature sensor.

9. The glass melt agitation system of claim 8, wherein, It also includes a third temperature sensor located on the surface of the platinum tube stirring section (2), which is communicatively connected to the main controller.

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