A refined flat glass annealing device

Abstract

The utility model discloses a kind of fine flat plate glass annealing device, belong to overflow glass production equipment technical field, including annealing furnace body and wind box;Annealing furnace body includes annealing furnace steel structure and heater, wind box is set in the two sides inner cavity of annealing furnace steel structure;Multiple holes are opened in the two sides of annealing furnace steel structure, wind box connects air inlet pipe, multiple air outlets are opened in air inlet pipe, air outlet is connected with hole one-to-one, air outlet and hole between installation air pipe;One end of air inlet pipe is provided with wind box air inlet, the other end of air inlet pipe is closed;One end of wind box is provided with air outlet, and one end of air outlet is connected with exhaust pipe;The two ends of annealing furnace steel structure are provided with traction hole, and traction roller is installed in traction hole;Traction roller clamps glass plate.Wind box is connected with multiple air pipes, the cooling air flow of each air pipe can be independently adjusted, the corresponding position cooling of wind box is realized, the gap between each air pipe can be reduced to within 50mm, more fine annealing adjustment is realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of overflow glass production equipment, specifically relating to a refined flat glass annealing device. Background Technology

[0002] Currently, the most common glass production methods are float glass and overflow glass. Overflow glass, compared to float glass, can produce glass with double-sided surfaces. The overflow method for producing cover glass involves a series of processes: overflow drawing, cooling and shaping, and annealing to finally form solid glass. In the overflow glass production process, the annealing furnace is one of the most crucial pieces of equipment. The glass production process, from top to bottom, consists of a muffle furnace, a forming furnace, and an annealing furnace, with the temperature gradually decreasing. The annealing furnace is a vital device for annealing the glass, releasing stress, and controlling warpage.

[0003] Currently, the annealing furnace area in the production process only has corresponding heaters, and the width of a single heater is more than 500mm, resulting in a wide range of adjustments and making it impossible to make precise adjustments. Utility Model Content

[0004] The purpose of this invention is to overcome the problem that the adjustment range in the annealing furnace area is not precise enough due to the use of a single heater, and to propose a refined flat glass annealing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A sophisticated flat glass annealing apparatus includes an annealing furnace body and a bellows; the annealing furnace body includes an annealing furnace steel structure and a heater, and the bellows are arranged in the inner cavities on both sides of the annealing furnace steel structure. Multiple holes are opened on both sides of the steel structure of the annealing furnace. The air box is connected to the air inlet pipe. Multiple air outlets are opened on the air inlet pipe. The air outlets are connected to the holes one by one. Air pipes are installed between the air outlets and the holes. One end of the air inlet duct is equipped with an air box inlet, and the other end of the air inlet duct is closed. An exhaust port is provided at one end of the bellows, and the exhaust port is connected to one end of the exhaust pipe; The steel structure of the annealing furnace has traction holes at both ends, and traction rollers are installed in the traction holes; the traction rollers hold the glass plates.

[0006] Furthermore, the air inlet duct is equipped with an air duct adjustment device.

[0007] Furthermore, the duct regulating device is equipped with a duct regulating valve.

[0008] Furthermore, the air inlet of the bellows is connected to the air supply equipment.

[0009] Furthermore, the air delivered by the air supply equipment includes cold air or hot air.

[0010] Furthermore, the duct regulating device is connected to one side of the flow meter.

[0011] Furthermore, the other side of the flow meter is connected to the air inlet pipe.

[0012] Furthermore, the other end of the exhaust pipe is located outside the steel structure of the annealing furnace.

[0013] Furthermore, the bellows is made of silicon carbide.

[0014] Furthermore, silicon carbide plates are used on the inner side of the annealing furnace steel structure.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: This invention proposes a refined annealing device for flat glass. The design of the bellows and other components ensures uniform annealing and precise temperature control, improving glass quality, reducing defects, and enhancing performance. Stable transmission via traction rollers improves efficiency. Furthermore, the device has a robust structure and a rational component layout, facilitating maintenance and repair, and meeting the demands of high-efficiency, high-quality production. Multiple air ducts are connected to the bellows, each with independently adjustable cooling airflow to cool corresponding areas within the bellows. The gap between each duct can be reduced to within 50mm, enabling more precise annealing adjustments. This invention allows for more accurate control of the annealing temperature, thereby optimizing glass warpage and stress, and improving the quality of glass production. Attached Figure Description

[0016] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the present invention and do not specifically limit the shapes and proportions of the components. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a refined flat glass annealing device according to the present invention. Figure 2 This is a front view of a refined flat glass annealing apparatus according to the present invention; Figure 3 This is a left view of a refined flat glass annealing apparatus according to the present invention; Figure 4 This is a top view of a refined flat glass annealing apparatus according to the present invention; Figure 5 This is a schematic diagram of the overall structure of the air duct adjustment of a precision flat glass annealing device according to the present invention. Figure 6 This is a front view of the air duct adjustment of a refined flat glass annealing device according to this utility model. Figure 7This is a left view of the air duct adjustment of a refined flat glass annealing device according to the present invention. Figure 8 This is a top view of the air duct adjustment of a refined flat glass annealing device according to this utility model.

[0017] Among them: 1: glass plate, 2: silicon carbide plate, 3: traction roller, 4: wind box, 5: air duct adjustment device, 6: air inlet pipe, 7: air outlet pipe, 8: annealing furnace steel structure, 9: air duct adjustment valve. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] Example 1 A sophisticated flat glass annealing apparatus includes an annealing furnace body and a bellows 4. The annealing furnace body includes an annealing furnace steel structure 8 and a heater. The bellows 4 are located in the inner cavities on both sides of the annealing furnace steel structure 8. Multiple holes are opened on both sides of the annealing furnace steel structure 8. The bellows 4 are connected to an air inlet pipe 6. The air inlet pipe 6 has multiple air outlets, and each air outlet is connected to one of the holes. Air ducts are installed between the air outlets and the holes. One end of the air inlet pipe 6 is provided with a bellows inlet, and the other end of the air inlet pipe 6 is closed. One end of the bellows 4 is provided with an exhaust port, which is connected to one end of an exhaust pipe 7. Traction holes are opened at both ends of the annealing furnace steel structure 8, and traction rollers 3 are installed in the traction holes. The traction rollers clamp the glass plate 1.

[0023] In this embodiment, the bellows are located inside the steel structure on both sides of the annealing furnace. Multiple air outlets in the inlet duct are connected to holes in the steel structure, allowing hot air to be evenly distributed onto the glass plate. Combined with the exhaust duct, this creates a stable airflow circulation, ensuring uniform heating and cooling of the glass and effectively eliminating thermal stress. The heater and air system work together to quickly and accurately adjust the furnace temperature, meeting diverse annealing requirements. Uniform airflow and precise temperature control prevent hot and cold spots on the glass surface, reducing defects such as unevenness and ripples, and improving appearance quality. Optimized internal structure reduces defects and microcracks, improving strength, hardness, and optical performance, and enhancing stability. The traction roller stably clamps the glass plate in the traction hole, ensuring continuous and smooth transmission and reducing swaying and deviation. Precise temperature control and uniform airflow accelerate heating and cooling, shortening the annealing cycle and increasing production capacity. The device has a robust structure and a rational component layout. The design of the inlet duct, exhaust duct, and traction roller facilitates disassembly and installation, aiding in daily maintenance and reducing downtime and costs.

[0024] The working process of a sophisticated flat glass annealing apparatus is as follows: Equipment Inspection: Before commencing the annealing operation, conduct a comprehensive inspection of the annealing apparatus. Ensure the annealing furnace's steel structure is stable, the heaters are functioning properly, and components such as the bellows, inlet pipes, and exhaust pipes are undamaged and securely connected. Ensure all pipes and openings are properly connected and there are no air leaks. Check that the traction rollers rotate freely to ensure they can smoothly clamp and pull the glass plates.

[0025] Parameter settings: Based on the material, thickness, and size of the glass plate, as well as the required annealing process, set appropriate parameters such as heating temperature, heating time, cooling air velocity, and cooling time on the control system. These parameters directly affect the annealing quality of the glass plate and therefore need to be set precisely.

[0026] Glass plate installation: Place the glass plate to be annealed on the traction rollers of the annealing furnace steel structure, adjust the position of the traction rollers to ensure that the glass plate is accurately clamped and can remain stable during the traction process without shifting or shaking.

[0027] Start the heater: Turn on the heater inside the annealing furnace. The heater begins to work, heating the internal space of the annealing furnace's steel structure. Heat is gradually transferred to the surface of the glass plate, causing the glass plate's temperature to rise. During the heating process, the control system monitors the furnace temperature in real time and automatically adjusts the heater power according to the set temperature curve to ensure that the glass plate heats up uniformly at the predetermined heating rate.

[0028] Temperature uniformity control: During the heating process, the uniformity of temperature inside the furnace is ensured as much as possible by rationally arranging the position and power distribution of the heaters and by designing the thermal insulation of the annealing furnace steel structure. At the same time, the bellows is kept closed to prevent cold air from entering and affecting the heating process of the glass plate.

[0029] Once the glass plate reaches the set insulation temperature, it enters the insulation stage. During this stage, the heater maintains a certain power output to keep the glass plate at the set temperature for a period of time. The purpose of insulation is to eliminate temperature gradients within the glass plate, making the temperature more uniform and reducing internal stress caused by uneven temperature distribution. The insulation time is determined based on factors such as the thickness and material of the glass plate, and the control system precisely controls the insulation time.

[0030] Start the air-cooling system: After the heat preservation is completed, cold air enters the air inlet duct through the air box inlet, and then enters through multiple air outlets in the air inlet duct and the holes on both sides of the annealing furnace steel structure. The cold air flows and exchanges heat with the high-temperature glass plate, causing the glass plate to gradually cool down. By adjusting the air flow rate in the air inlet duct, the flow rate of cold air entering the furnace can be controlled, thereby adjusting the cooling wind speed.

[0031] Cooling process control: During the cooling process, the control system monitors the temperature of the glass plate in real time according to the set cooling curve and automatically adjusts the cooling airflow speed according to temperature changes. The cooling process is usually divided into multiple stages, each using a different cooling rate, to ensure that the glass plate does not generate excessive internal stress due to excessively rapid cooling, which could lead to glass breakage or performance degradation.

[0032] Exhaust ventilation: After heat exchange with the cold air, the hot air enters the exhaust duct through the exhaust port at one end of the air box and is then discharged outside the annealing furnace. The exhaust duct helps maintain air circulation inside the furnace, ensuring uniform cooling and preventing hot air from accumulating inside the furnace and affecting cooling efficiency.

[0033] Glass plate traction: Throughout the heating, holding, and cooling processes, the traction rollers rotate continuously and slowly, driving the glass plate to move smoothly within the annealing furnace. The traction speed is precisely controlled according to the annealing process requirements, ensuring that the glass plate has sufficient residence time in the furnace to complete each stage of processing.

[0034] Unloading: After the glass sheet has completed the entire annealing process and cooled to near room temperature, it is pulled out of the annealing furnace steel structure by traction rollers. During unloading, operators must carefully observe the surface quality of the glass sheet, checking for defects such as cracks and deformation. If defects are found, the annealing process parameters must be adjusted promptly or the equipment must be inspected and repaired.

[0035] Through the above process, a refined flat glass annealing device achieves refined annealing of flat glass, significantly improving the flatness and optical performance of the product, and is suitable for high-end application scenarios such as photovoltaic glass and automotive glass.

[0036] Example 2 A sophisticated flat glass annealing apparatus includes an annealing furnace body and a bellows 4. The annealing furnace body includes an annealing furnace steel structure 8 and a heater. The bellows 4 are located in the inner cavities on both sides of the annealing furnace steel structure 8. Multiple holes are opened on both sides of the annealing furnace steel structure 8. The bellows 4 are connected to an air inlet pipe 6. The air inlet pipe 6 has multiple air outlets, and each air outlet is connected to one of the holes. Air ducts are installed between the air outlets and the holes. One end of the air inlet pipe 6 is provided with a bellows inlet, and the other end of the air inlet pipe 6 is closed. One end of the bellows 4 is provided with an exhaust port, which is connected to one end of an exhaust pipe 7. Traction holes are opened at both ends of the annealing furnace steel structure 8, and traction rollers 3 are installed in the traction holes. The traction rollers clamp the glass plate 1.

[0037] The air inlet duct 6 is equipped with an air duct regulating device 5. An air duct regulating valve 9 is installed on the air duct regulating device 5. The air box inlet is connected to the air supply equipment. The air supply equipment delivers either cold or hot air. The air duct regulating device 5 is connected to one side of the flow meter. The other side of the flow meter is connected to the air inlet duct 6. The other end of the exhaust duct 7 is located outside the annealing furnace steel structure 8. The air box 4 is made of silicon carbide. The inner side of the annealing furnace steel structure 8 is made of silicon carbide plate 2.

[0038] The steel structure 8 of the annealing furnace is mainly used for heat preservation and fixing related devices, while the heater is used to keep the glass plate 1 warm and prevent it from cooling down too quickly.

[0039] Optionally, the air box 4 is a cooling air box, horizontally fixed inside the annealing furnace steel structure 8, forming a closed space with the annealing furnace steel structure 8; the annealing furnace steel structure 8 that fixes the air box 4 has a series of holes for installing the air inlet pipe 6. Optionally, the cooling air box is made of silicon carbide material, used for heat equalization and to prevent cooling air from directly blowing onto the surface of the glass plate 1. Optionally, the cooling air box has an exhaust port at its end for exhausting air from the air box and preventing the air box from breaking due to excessive pressure. Optionally, the air intake of the air inlet pipe is controlled by a flow meter for precise adjustment of the area temperature. Optionally, the other side of the flow meter is connected to the air inlet pipe 6; one side of the air inlet of the air inlet pipe is connected to the air supply equipment, and the other side is closed. This embodiment changes the temperature of a corresponding narrow area by adjusting the flow rate of the air duct, thereby achieving refined annealing of the glass. Furthermore, the air introduced can be cold air or hot air, achieving a wider range of temperature adjustment and improving product quality.

[0040] This embodiment includes an annealing furnace body and a cooling air box, etc. The annealing furnace body is composed of a steel structure and heaters, etc., and is used for glass annealing and fixing related equipment in glass production. The cooling air box is made of silicon carbide and is fixed in a fixed position inside the annealing furnace body, forming a closed space with the annealing furnace body. Air is directly blown onto the silicon carbide surface from the outside through air ducts to achieve regional temperature regulation. This embodiment can more accurately control the annealing temperature, thereby optimizing the warpage and stress of the glass sheet and improving the quality of glass production.

[0041] Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the foregoing description. Therefore, the scope of this teaching should not be determined by reference to the foregoing description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed utility model subject matter.

[0042] The above content provides a further detailed description of this utility model. It should not be considered that the specific embodiments of this utility model are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the scope of protection of this utility model as defined by the submitted claims.

Claims

1. A refined flat glass annealing apparatus, characterized in that, It includes an annealing furnace body and a bellows (4); the annealing furnace body includes an annealing furnace steel structure (8) and a heater, and the bellows (4) are arranged in the inner cavities on both sides of the annealing furnace steel structure (8); Multiple holes are opened on both sides of the steel structure (8) of the annealing furnace. The air box (4) is connected to the air inlet pipe (6). Multiple air outlets are opened on the air inlet pipe (6). The air outlets are connected to the holes one by one. Air pipes are installed between the air outlets and the holes. One end of the air inlet pipe (6) is provided with an air box inlet, and the other end of the air inlet pipe (6) is closed; An exhaust port is provided at one end of the bellows (4), and the exhaust port is connected to one end of the exhaust pipe (7); Both ends of the steel structure (8) of the annealing furnace are provided with traction holes, and traction rollers (3) are installed in the traction holes; the traction rollers hold the glass plate (1).

2. The refined flat glass annealing apparatus according to claim 1, characterized in that, The air inlet of the air box is connected to the air supply equipment.

3. The refined flat glass annealing apparatus according to claim 2, characterized in that, The air in the air supply equipment includes cold air or hot air.

4. The refined flat glass annealing apparatus according to claim 1, characterized in that, The air inlet pipe (6) is equipped with an air pipe adjustment device (5).

5. The refined flat glass annealing apparatus according to claim 4, characterized in that, The duct regulating device (5) is equipped with a duct regulating valve (9).

6. The refined flat glass annealing apparatus according to claim 4, characterized in that, The duct regulating device (5) is connected to one side of the flow meter.

7. A refined flat glass annealing apparatus according to claim 6, characterized in that, The other side of the flow meter is connected to the air inlet pipe (6).

8. The refined flat glass annealing apparatus according to claim 1, characterized in that, The other end of the exhaust pipe (7) is located outside the steel structure (8) of the annealing furnace.

9. The refined flat glass annealing apparatus according to claim 1, characterized in that, The air box (4) is made of silicon carbide.

10. A refined flat glass annealing apparatus according to claim 1, characterized in that, The inner side of the steel structure (8) of the annealing furnace is made of silicon carbide plate (2).

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