A heater structure for a liquid crystal glass forming furnace

Abstract

This utility model discloses a heater structure for a liquid crystal glass forming furnace, relating to the field of glass substrate manufacturing technology. It includes a base plate, on the front of which a heat insulation box, a heat insulation block, and a wire spool are sequentially mounted. The wire spool has a U-shaped independent mounting position for nesting heating wires, avoiding mutual heat interference. A ceramic base, a wiring copper plate, and a handle are mounted on the back for easy wiring and operation. The heat insulation box and wire spool are fixed together by an L-shaped clamping plate and slot, ensuring a stable connection and easy disassembly. Each component has pre-drilled holes through which corundum tubes are inserted for insulation and guiding the heating wire terminals. The wire spool is made of high-purity alumina, possessing excellent insulation and thermal shock resistance. This structure offers high reliability and good insulation, resisting high temperatures within the forming furnace and impacts from material breakage and blockages, reducing damage to the heater and heating wires, and allowing for rapid replacement, ensuring production continuity and glass substrate quality.

Description

Technical Field

[0001] This utility model relates to the field of glass substrate manufacturing technology, and in particular to a heater structure for a liquid crystal glass forming furnace. Background Technology

[0002] In the field of glass substrate manufacturing, the overflow pull-down method has become the mainstream production process due to its advantage of producing high-flatness and high-quality glass substrates. In this process, molten glass flows evenly through the U-shaped groove on the top of the overflow brick, and after converging into a glass ribbon, it forms a substrate glass under the action of gravity and traction rollers. It then undergoes annealing, cutting and other processes to become the finished product.

[0003] However, actual production faces numerous challenges. On the one hand, the glass sheets are in a high-temperature environment inside the forming furnace, requiring the heaters to operate continuously for extended periods. This high temperature accelerates the aging of internal heater components, leading to performance degradation or even damage, and affecting the stability of temperature control. On the other hand, unexpected situations such as sheet breakage and material blockage may occur during production. During material handling, the material may directly impact the heaters, especially the heating wires, easily causing damage. Once the heater or heating wires are damaged, the furnace temperature cannot be effectively maintained, affecting the forming quality of the glass sheets and the stress relief effect, ultimately leading to a decline in product quality and even causing the entire production line to shut down, resulting in significant economic losses for the company. Therefore, there is an urgent need for a heater structure that is highly reliable, has good insulation, and is easy to replace quickly. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a heater structure for a liquid crystal glass forming furnace.

[0005] The present invention proposes a heater structure for a liquid crystal glass forming furnace, including a base plate, an insulation box on the front of the base plate, an insulation block fixed inside the insulation box, a wire spool installed on the front of the insulation box, and several U-shaped independent mounting positions on the front of the wire spool, with heating wires installed in the independent mounting positions. A ceramic seat, a wiring copper plate, and a handle are provided on the back of the base plate.

[0006] Furthermore, the insulation box and the wire reel are fixedly connected by a matching L-shaped card plate and slot. The slot is opened at the top and bottom of the wire reel, and the L-shaped card plate is installed at the top and bottom of the insulation box by bolts, with the end of the L-shaped card plate engaging inside the slot.

[0007] Furthermore, the back of the silk disc extends into the interior of the insulation box and fits against the front of the insulation block.

[0008] Furthermore, corresponding pre-drilled holes are made inside the base plate, insulation box, insulation block, and wire disc. Corundum tubes are fixed inside the pre-drilled holes. After the heating wire is installed, two wires are led out as electrical terminals, extending from the inside of the corundum tube to the back, passing through the ceramic base, and then fixed inside the wiring copper plate.

[0009] Furthermore, the wire spool is mainly made of aluminum oxide.

[0010] Furthermore, the base plate, insulation box, and L-shaped cardboard are made of high-temperature resistant stainless steel, and the insulation block is made of high-temperature resistant heat insulation material.

[0011] Furthermore, the heating wire is made of an iron-chromium-aluminum alloy.

[0012] The beneficial effects of this utility model are: it has high reliability and good heat preservation, which can effectively resist the high temperature environment in the forming furnace and the impact of the material in the barrel when the plate breaks and the material is blocked, greatly reducing the probability of damage to the heater and heating wire. When the heater fails, it can be quickly disassembled and replaced, and the furnace temperature can be quickly restored to a stable state. It reduces the adverse effects of temperature fluctuations on glass plate forming and stress relief, effectively ensuring the continuity of glass substrate production and the stability of product quality, and reducing the economic losses caused by production interruption and product defects. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the disassembled parts of this utility model;

[0014] Figure 2 This is a schematic diagram of the rear view after assembly of this utility model;

[0015] Figure 3 This is a schematic diagram of the front view after assembly of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the wire spool and the L-shaped clamping plate in this utility model;

[0017] Figure 5 This is a cross-sectional view of the assembled version of this utility model.

[0018] In the diagram: 1. Base plate; 2. Insulation box; 3. Insulation block; 31. Reserved hole; 4. Wire spool; 41. Independent mounting position; 42. Slot; 5. Heating wire; 6. Ceramic base; 7. Wiring copper plate; 8. Handle; 9. L-shaped clamp; 10. Corundum tube. Detailed Implementation

[0019] Reference Figure 1-5 The present invention proposes a heater structure for a liquid crystal glass forming furnace, the specific structure of which and its installation and usage are as follows:

[0020] Base plate 1: As the supporting foundation of the entire heater structure, it is made of high-temperature resistant stainless steel to ensure stable structural performance even in high-temperature environments.

[0021] Insulation box 2: Installed on the front of base plate 1, it is also made of high temperature resistant stainless steel. Insulation block 3 is fixed inside to reduce heat loss and improve heating efficiency.

[0022] Insulation block 3: Made of high-temperature resistant heat insulation material, it is filled inside the insulation box 2 to effectively prevent heat from being transferred to the outside.

[0023] Wire spool 4: Installed on the front of the insulation box 2, made of aluminum oxide (content not less than 97%), which has good insulation and thermal shock resistance. The front of the wire spool 4 has several independent mounting positions 41 with "U"-shaped structures for nesting and installing heating wires 5.

[0024] Heating wire 5: Made of iron-chromium-aluminum alloy, it has high resistivity and good performance, and can effectively convert electrical energy into heat energy. The heating wire 5 is nested in each independent mounting position 41 of the wire reel 4 to ensure that the heat emitted by each heating wire 5 does not interfere with each other.

[0025] Ceramic base 6: Symmetrically mounted on the back of base plate 1, used to support and fix wiring copper plate 7.

[0026] Wiring copper plate 7: Installed on the back of ceramic base 6, used to connect the power terminal of heating wire 5 and external cable.

[0027] Handle 8: Installed on the back of base plate 1, facilitating the installation and replacement of the heater.

[0028] L-shaped clamping plate 9 and clamping slot 42: used to fix the insulation box 2 and the wire spool 4. The clamping slot 42 is opened at the top and bottom of the wire spool 4. The L-shaped clamping plate 9 is installed at the top and bottom of the insulation box 2 by bolts, and the end of the L-shaped clamping plate 9 is engaged inside the clamping slot 42 to achieve a stable connection.

[0029] Corundum tube 10: It is fixed in the corresponding reserved hole 31 inside the base plate 1, the insulation box 2, the insulation block 3, and the wire disc 4. It is used to guide the electrical terminal of the heating wire 5 to extend from the inside to the back and also serves as insulation.

[0030] During installation, the heater is embedded in the furnace shell of the liquid crystal glass forming furnace using several bolts. After installation, the side with the heating wire 5 faces the furnace, while the side with the wiring copper plate 7 and handle 8 is exposed outside the shell. When the heater needs to be disassembled and replaced, simply remove the bolts connected to the shell and pull out the heater using the handle 8. This allows for quick heater replacement. During use, the external cable needs to be connected to the two terminals of the heating wire 5 fixed on the wiring copper plate 7. When powered on, the heating wire 5 generates heat, thus achieving heating. Because of the insulation block 3, the heat generated by the heating wire 5 does not diffuse to the outside of the shell. Furthermore, the heating wires 5 are installed in independent mounting positions 41, so the heat generated between them does not interfere with each other.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heater structure for a liquid crystal glass forming furnace, characterized in that, It includes a base plate (1), a heat preservation box (2) on the front of the base plate (1), a heat preservation block (3) fixed inside the heat preservation box (2), a wire spool (4) installed on the front of the heat preservation box (2), several "U"-shaped independent mounting positions (41) on the front of the wire spool (4), a heating wire (5) installed in the independent mounting position (41), and a ceramic seat (6), a wiring copper plate (7) and a handle (8) on the back of the base plate (1).

2. The structure of the liquid crystal glass forming furnace heater according to claim 1, characterized in that, The heat preservation box (2) and the wire disc (4) are fixedly connected by a matching L-shaped card plate (9) and a card slot (42). The card slot (42) is opened at the top and bottom of the wire disc (4). The L-shaped card plate (9) is installed at the top and bottom of the heat preservation box (2) by bolts, and the end of the L-shaped card plate (9) is engaged inside the card slot (42).

3. The structure of the liquid crystal glass forming furnace heater according to claim 1, characterized in that, The back of the silk disc (4) extends into the interior of the insulation box (2) and is in contact with the front of the insulation block (3).

4. The structure of the liquid crystal glass forming furnace heater according to claim 1, characterized in that, The base plate (1), the insulation box (2), the insulation block (3), and the wire disc (4) all have corresponding reserved holes (31). The reserved holes (31) are fixed with a corundum tube (10). After the heating wire (5) is installed, two wires are led out as electrical terminals, extending from the inside of the corundum tube (10) to the back, passing through the ceramic seat (6), and then fixed inside the wiring copper plate (7).

5. The structure of the liquid crystal glass forming furnace heater according to claim 1, characterized in that, The silk disc (4) is mainly made of aluminum oxide.

6. The structure of the liquid crystal glass forming furnace heater according to claim 1, characterized in that, The base plate (1), the insulation box (2), and the L-shaped card plate (9) are made of high-temperature resistant stainless steel, and the insulation block (3) is made of high-temperature resistant heat insulation material.

7. The liquid crystal glass forming furnace heater structure according to claim 1, characterized in that, The heating wire (5) is made of iron-chromium-aluminum alloy.

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