Glass production line

Abstract

The utility model discloses a glass production line which is characterized in that a glass kiln is connected with two pieces of glass forming equipment through two mutually independent platinum channels, a direct heating channel enables the platinum channels to emit heat through eddy current generated by an induction heating coil, the heating speed is high, and glass liquid is clarified through high temperature; the device is suitable for glass forming equipment which has relatively large and stable requirements on the feeding amount and relatively high requirements on the clarification temperature; the indirect heating channel indirectly heats the platinum channel through heat radiation generated by the heating element, the heating speed is low, glass liquid is clarified through time, and the device is suitable for glass forming equipment which has small requirements for the discharging amount and needs to be adjusted frequently. The two platinum channels respectively adopt two heating modes of direct heating and indirect heating, so that the adjustable range of the feeding amount can be improved, and the requirements of different formulas and forming modes on the temperature and viscosity of the molten glass can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of the feeding passage in glass forming, and particularly relates to a glass production line. Background Art

[0002] In the glass production process, it is mostly adopted to lead out the molten glass liquid in the glass furnace through a platinum channel and guide it to the glass forming equipment. At present, the industry generally adopts a one-kiln-one-line production mode. As Figure 1 shown, that is, one glass furnace is connected to one glass forming equipment through one platinum channel. The platinum channel includes multiple processing sections, specifically an inlet section, a clarification section, a cooling section, a stirring tank and a feeding section connected in sequence. For glass furnaces with a larger tonnage, in order to meet the feeding requirements, a one-kiln-two-line production mode is mostly adopted. As Figure 2 shown, that is, one glass furnace is connected to two glass forming equipments through two platinum channels respectively. Similarly, there is a double platinum channel structure for ultra-thin glass substrates disclosed in Chinese Patent CN109305747A, and an inclined double platinum channel glass liquid treatment and conveying system disclosed in Chinese Patent CN110981167B. However, the glass liquid output from these two platinum channels is the same, and correspondingly, it can only be connected to two glass forming equipments with the same forming method, resulting in a single product type. Summary of the Invention

[0003] Aiming at the above deficiencies of the prior art, the purpose of the utility model is to provide a glass production line to solve the technical problem that the one-kiln-two-line production mode is difficult to meet the production requirements due to the single heating method, and achieve the effect of improving the flexibility and adaptability of production adjustment.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A glass production line includes two platinum channels. The inlet sections of the two platinum channels are respectively connected to the discharge port of the glass furnace, and the feeding sections are connected to the feeding ports of two glass forming equipments one by one. The two platinum channels are a direct heating channel and an indirect heating channel respectively. A direct heating structure is provided on the direct heating channel, and the direct heating structure enables the direct heating channel to generate eddy currents to achieve direct heating. An indirect heating structure is provided on the indirect heating channel, and the indirect heating structure generates thermal radiation to the indirect heating channel to achieve indirect heating.

[0006] Further, the indirect heating structure includes a plurality of heating rods evenly spaced along the length direction of the indirect heating channel.

[0007] Further, the indirect heating channel is wrapped with refractory materials, and the heating rods are arranged through the refractory materials.

[0008] Furthermore, the direct heating structure includes an induction heating coil helically wound around the outside of the direct heating channel.

[0009] Furthermore, the direct heating channel includes a plurality of processing sections sequentially connected by platinum flanges, and direct heating structures are respectively provided on each processing section.

[0010] Furthermore, the direct heating structure further includes a copper bar connected to the end of the induction heating coil, and the copper bar is fixedly connected to the inner side of the platinum flange close thereto.

[0011] Furthermore, the two platinum channels include a plurality of processing sections sequentially connected, which are respectively an inlet section, a heating-up section, a clarification section, a cooling-down section, a stirring section, and a feeding section.

[0012] Furthermore, direct heating structures are respectively provided on the inlet section, the heating-up section, the clarification section, the cooling-down section, the stirring section, and the feeding section of the direct heating channel.

[0013] Furthermore, direct heating structures are respectively provided on the inlet section and the feeding section of the indirect heating channel, and indirect heating structures are respectively provided on the heating-up section, the clarification section, the cooling-down section, and the stirring section of the indirect heating channel.

[0014] Furthermore, the feeding section of the direct heating channel is connected to a glass forming device for overflow forming, and the feeding section of the indirect heating channel is connected to a glass forming device for casting forming.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] In the glass production line of the present utility model, two independent platinum channels are connected between the glass kiln and two glass forming devices. The direct heating channel generates eddy currents through the induction heating coil to heat the platinum channel, and the heating speed is relatively fast. The glass liquid is clarified at high temperature, which is suitable for glass forming devices with large and stable feeding requirements and high requirements for clarification temperature. The indirect heating channel indirectly heats the platinum channel through the thermal radiation generated by the heating element, and the heating speed is relatively slow. The glass liquid is clarified through time, which is suitable for glass forming devices with small discharge requirements and frequent adjustment requirements. The two platinum channels respectively adopt two heating methods of direct heating and indirect heating, which can increase the adjustable range of the feeding amount and is beneficial to meeting the requirements of different formulations and forming methods for the temperature and viscosity of the glass liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the one-kiln-one-line production mode described in the background art;

[0018] Figure 2 is a schematic structural diagram of the one-kiln-two-line production mode described in the background art;

[0019] Figure 3 Schematic structural diagram of the glass production line described in the embodiment;

[0020] Figure 4 Partial schematic structural diagram of the indirect heating channel described in the embodiment;

[0021] Figure 5 Partial schematic structural diagram of the direct heating channel described in the embodiment;

[0022] Among them, there are glass furnace 1, inlet section 21, clarification section 22, cooling section 23, stirring section 24, feeding section 25, glass forming equipment 3, direct heating channel 4, platinum flange 41, copper row 42, induction heating coil 43, indirect heating channel 5, heating rod 51, refractory material 52. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0024] Embodiment:

[0025] Please refer to Figure 3 , a glass production line includes two platinum channels. The inlet sections of the two platinum channels are respectively connected to the discharge ports of the glass furnace 1, and the feeding sections are connected to the feeding ports of two glass forming equipments 3 one by one; the two platinum channels are respectively a direct heating channel 4 and an indirect heating channel 5. A direct heating structure is provided on the direct heating channel 4, and the direct heating structure generates eddy current in the direct heating channel 4 to achieve direct heating. An indirect heating structure is provided on the indirect heating channel 5, and the indirect heating structure generates thermal radiation to the indirect heating channel 5 to achieve indirect heating.

[0026] The glass production line of the present utility model is connected between a glass furnace 1 and two glass forming devices 3 through two independent platinum channels, which can effectively meet the discharging requirements of a glass furnace with a relatively large tonnage; the two platinum channels adopt two heating methods of direct heating and indirect heating respectively. The direct heating is realized by generating eddy currents in the direct heating channel 4 through a direct heating structure, and the heating speed is relatively fast. The glass liquid is clarified by high temperature, which is applicable to glass forming devices with a large and stable demand for the feeding amount and a high requirement for the clarification temperature; the indirect heating is realized by the heat radiation generated by an indirect heating structure, and the heating speed is relatively slow. The glass liquid is clarified by time, which is applicable to glass forming devices with a small demand for the discharging amount and that need to be adjusted frequently; the glass production line supplies materials to the glass production equipment through two platinum channels with different heating methods, which can increase the adjustable range of the feeding amount, is beneficial to meeting the requirements of different formulas and forming methods for the temperature and viscosity of the glass liquid, and can effectively solve the problem that the current production mode of one furnace with two lines is difficult to meet the production requirements due to a single heating method, and achieve the effect of improving the flexibility and adaptability of production adjustment.

[0027] During implementation, the indirect heating structure can adopt the form of winding electric heating wires around the indirect heating channel 5. However, when the electric heating wires are energized for heating, their surfaces are charged and the heating temperature is limited. Therefore, as Figure 4 shown, in this embodiment, heating rods 51 are uniformly spaced along the length direction outside the indirect heating channel 5 as the indirect heating structure; in this way, since the surfaces of the heating rods 51 are non-conductive and the heating temperature range is relatively large, the heating requirements of the glass liquid can be better met; the heating rods 51 are uniformly spaced along the length direction of the indirect heating channel 5, so that the heat radiation of the indirect heating structure to the indirect heating channel 5 is uniform, thereby making the temperature of the glass liquid conveyed therein more stable, which is beneficial to improving the quality of glass production.

[0028] Furthermore, please refer to Figure 4 , a refractory material 52 is wrapped outside the indirect heating channel 5, and the heating rods 51 are arranged through the refractory material 52; in this way, the heating rods 51 are separated from the outside through the refractory material 52, which not only improves the safety of the use of the indirect heating channel 5, but also the refractory material 52 has certain heat insulation performance, which can make the heat generated by the heating rods 51 act on the platinum channel better, which is beneficial to improving the heating efficiency.

[0029] Please refer to Figure 5 , the direct heating structure includes an induction heating coil 43 spirally wound around the outside of the direct heating channel 4; in this way, the direct heating structure generates uniformly distributed eddy currents in the direct heating channel 4, so that the direct heating channel 4 generates heat more uniformly and the temperature of the glass liquid conveyed inside is more stable, which is beneficial to improving the quality of glass production.

[0030] In this embodiment, both the direct heating channel 4 and the indirect heating channel 5 include a plurality of processing sections connected in sequence, which are respectively an inlet section, a heating-up section, a clarification section, a cooling-down section, a stirring section, and a feeding section. In this way, the processing sections of the two platinum channels are the same as those of the conventional platinum channel, so as to enable the conveyed molten glass to undergo a complete heating and processing process, and cooperate with two different heating methods to meet different production requirements.

[0031] Please refer to Figure 5 , platinum flanges 41 are respectively provided at both ends of each processing section of the direct heating channel 4, and each processing section is connected through the platinum flanges 41, and a direct heating structure is respectively provided on each processing section. In this way, induction heating coils 43 are arranged in sections on the direct heating channel 4, so as to facilitate sectional temperature control and be beneficial to the flexibility of temperature adjustment. In addition, each processing section is connected through the platinum flanges 41, so as to facilitate separate replacement, cleaning, and maintenance.

[0032] Please refer to Figure 5 , the direct heating structure further includes a copper row 42 connected to the end of the induction heating coil 43, and the copper row 42 is fixedly connected to the inner side of the adjacent platinum flange 41. In this way, the end of the induction heating coil 43 is connected to the copper row 42 on the inner side of the platinum flange 41, so as to facilitate wiring and heating the corresponding processing section.

[0033] In this embodiment, direct heating structures are respectively provided on the inlet section, heating-up section, clarification section, cooling-down section, stirring section, and feeding section of the direct heating channel 4. In this way, the direct heating channel 4 maintains a form of direct heating throughout the process, with a fast heating speed, so as to meet the glass forming equipment with a large demand for the feeding amount and a high requirement for the clarification temperature.

[0034] In this embodiment, direct heating structures are respectively provided on the inlet section and the feeding section of the indirect heating channel 5, and indirect heating structures are respectively provided on the heating-up section, clarification section, cooling-down section, and stirring section of the indirect heating channel 5. In this way, except for direct heating at both ends, the rest of the indirect heating channel 5 adopts indirect heating, with a slower heating speed and flexible temperature adjustment, so as to meet the glass forming equipment with a small demand for the discharge amount and frequent adjustment requirements.

[0035] In this embodiment, the direct heating channel 4 is set with a clarification temperature of 1550 - 1650 °C, a clarification time of 40 - 60 minutes, a stirring temperature of 1300 - 1400 °C, and a feeding temperature of 1250 - 1280 °C. Correspondingly, the feeding section is connected to the glass forming device 3 for overflow forming; the indirect heating channel 5 is set with a clarification temperature of 1400 - 1450 °C, a clarification time of 80 - 120 minutes, a stirring temperature of 1250 - 1300 °C, and a feeding temperature of 1150 - 1200 °C. Correspondingly, the feeding section is connected to the glass forming device 3 for casting forming. In this way, the two platinum channels are respectively connected to two glass forming devices 3 with different forming methods, which can be flexibly selected according to conditions such as the formula, forming temperature, and viscosity of the glass product, so as to meet different production requirements.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the technical solutions. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present invention without departing from the purpose and scope of the present technical solution shall be covered by the scope of the claims of the present invention.

Claims

1. A glass production line, characterized in that: It includes two platinum channels. The inlet sections of the two platinum channels are respectively connected to the discharge ports of the glass furnace, and the feeding sections are connected to the inlet ports of two glass forming devices one by one; the two platinum channels are a direct heating channel and an indirect heating channel respectively. A direct heating structure is provided on the direct heating channel, and the direct heating structure generates eddy currents in the direct heating channel to achieve direct heating. An indirect heating structure is provided on the indirect heating channel, and the indirect heating structure generates thermal radiation to the indirect heating channel to achieve indirect heating.

2. The glass production line according to claim 1, wherein: The indirect heating structure includes a number of heating rods evenly spaced along the length direction of the indirect heating channel.

3. The glass production line according to claim 2, characterized in that: The indirect heating channel is wrapped with refractory materials, and the heating rods are inserted into the refractory materials.

4. The glass production line according to claim 1, wherein: The direct heating structure includes an induction heating coil spirally wound outside the direct heating channel.

5. The glass production line according to claim 4, characterized in that: The direct heating channel includes a plurality of treatment sections connected in sequence through platinum flanges, and direct heating structures are respectively provided on each treatment section.

6. The glass production line according to claim 5, wherein: The direct heating structure further includes a copper busbar connected to the end of the induction heating coil, and the copper busbar is fixedly connected to the inner side of the adjacent platinum flange.

7. The glass production line according to claim 1, characterized in that: The two platinum channels include a plurality of treatment sections connected in sequence, which are respectively an inlet section, a heating-up section, a clarification section, a cooling-down section, a stirring section and a feeding section.

8. The glass production line according to claim 7, wherein: Direct heating structures are respectively provided on the inlet section, heating-up section, clarification section, cooling-down section, stirring section and feeding section of the direct heating channel.

9. The glass production line according to claim 7, wherein: Direct heating structures are respectively provided on the inlet section and feeding section of the indirect heating channel, and indirect heating structures are respectively provided on the heating-up section, clarification section, cooling-down section and stirring section of the indirect heating channel.

10. The glass production line according to claim 1, characterized in that: The feeding section of the direct heating channel is connected to the glass forming device for overflow forming, and the feeding section of the indirect heating channel is connected to the glass forming device for casting forming.

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