Annular non-contact quartz fiber production heating and melting device

Abstract

The utility model relates to the field of quartz fiber production, and discloses an annular non-contact quartz fiber production heating and melting device which comprises an outer cavity, an outer cavity cover is fixedly connected to the top of the outer cavity, a plurality of guide rod holes are formed in the surface of the outer cavity cover, an inner cavity is fixedly connected to the interior of the outer cavity, and a plurality of guide rod holes are formed in the surface of the inner cavity. An inner cavity cover is fixedly connected to the top of the inner cavity, a heating assembly is arranged in the inner cavity and comprises a heating ring, the heating ring is installed in the inner cavity, a plurality of heat insulation pipes are fixedly connected to the bottom of the heating ring, a plurality of heating holes are formed in the top of the heating ring, and the heat insulation pipes are fixedly connected to the bottom of the heating ring. The outer wall of the heating ring is sleeved with an induction heating coil. According to the utility model, non-contact induction heating is adopted, and inert gas is filled into the inner cavity to protect molten quartz glass rod liquid drops, so that impurities in the air can be prevented from polluting the quartz liquid drops, and the purity of silicon dioxide in the quartz fiber is further improved.

Description

Technical Field

[0001] This utility model relates to the field of quartz fiber production, and in particular to a ring-shaped non-contact quartz fiber production heating and melting device. Background Technology

[0002] Quartz fiber is a high-performance inorganic fiber with silicon dioxide as its main component. It possesses excellent properties such as high strength, high modulus, high temperature resistance, and chemical corrosion resistance, and is widely used in high-end fields such as aerospace, electronics, and defense. Heating and melting are crucial steps in the production of quartz fiber. By heating and melting, the solid quartz raw material is transformed into a drawable liquid state, which can then be drawn into fibers of the required diameter using specific processes.

[0003] Traditional quartz fiber production heating and melting technologies often employ contact heating methods. This method has significant drawbacks. Due to differences in heat conduction at the contact points, uneven heating of the quartz rods easily occurs, resulting in inconsistent melting levels. This leads to large errors in the diameter of the produced quartz fiber monofilaments, significantly reducing product quality stability. Furthermore, the uneven heating makes it difficult for the quartz rods to form regular, ideal quartz droplet shapes during melting, greatly hindering subsequent fiber drawing operations and compromising the stability of the drawing process. This, in turn, severely impacts product quality and production capacity. Therefore, a ring-shaped non-contact quartz fiber production heating and melting device is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a ring-shaped non-contact quartz fiber production heating and melting device, which aims to improve the problem of uneven heat conduction at the contact parts in the prior art, which easily causes uneven heating of each quartz rod and results in inconsistent melting degrees.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a ring-shaped non-contact quartz fiber production heating and melting device, comprising an outer cavity, an outer cavity cover fixedly connected to the top of the outer cavity, a plurality of guide rod holes opened on the surface of the outer cavity cover, an inner cavity fixedly connected inside the outer cavity, an inner cavity cover fixedly connected to the top of the inner cavity, and a heating component disposed inside the inner cavity;

[0006] The heating assembly includes a heating ring installed inside the inner cavity. Multiple heat insulation tubes are fixedly connected to the bottom of the heating ring, and multiple heating holes are opened on the top of the heating ring. An induction heating coil is sleeved on the outer wall of the heating ring.

[0007] As a further description of the above technical solution:

[0008] An insulating layer is filled between the inner cavity and the outer cavity. An inert gas groove is provided between the top of the inner wall of the insulating layer and the inner cavity cover. Multiple inert gas inlet holes are provided on the bottom wall of the inert gas groove. A gas groove cover is provided on the top of the inert gas groove.

[0009] As a further description of the above technical solution:

[0010] The inner cavity has a cooling water tank at the bottom, the outer cavity has an inlet pipe fixedly connected to the left side of the bottom, and the outer cavity has an outlet pipe fixedly connected to the right side of the bottom. Both the inlet pipe and the outlet pipe are connected to the cooling water tank.

[0011] As a further description of the above technical solution:

[0012] The inner cavity surface is provided with multiple wire outlet holes. The number of wire outlet holes, heating holes and heat insulation tubes are equal. The heating holes are flared shapes that are wider at the top and narrower at the bottom, and the wire outlet holes are flared shapes that are narrower at the top and wider at the bottom.

[0013] As a further description of the above technical solution:

[0014] A thermocouple is fixedly connected to the middle side of the bottom of the inner cavity.

[0015] As a further description of the above technical solution:

[0016] Two air inlet pipes are fixedly connected to the outer wall of the outer cavity, and the air inlet pipes are connected to the inert gas tank.

[0017] As a further description of the above technical solution:

[0018] The bottom of the outer cavity has a wire outlet.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, non-contact induction heating is adopted, and inert gas is filled into the inner cavity to protect the molten quartz glass rod droplets. This can prevent impurities in the air from contaminating the quartz droplets, further improve the purity of silicon dioxide in the quartz fiber, and make the product quality higher and more stable.

[0021] 2. In this utility model, the heating ring is heated by an induction heating coil, which makes the heating more uniform and the melting of each quartz rod more uniform, thereby making the diameter error of the monofilament of the produced quartz fiber smaller and the product quality more stable.

[0022] 3. In this utility model, inert gas enters the inert gas groove on the inner cavity cover from the air inlet pipes at both ends, and then enters the inner cavity evenly from multiple inert gas inlet holes in the inert gas groove, so as to prevent the inert gas from forming eddies in the inner cavity and thus affecting the heating and melting of the quartz rod.

[0023] 4. In this utility model, the heating holes on the heating ring are designed with deep chamfers, which allows the quartz rod to be preheated in the upper half of the heating hole and melted in the lower half of the heating hole. This results in better morphology of the quartz droplets, more stable drawing operation, and more uniform diameter of the produced quartz fiber monofilaments.

[0024] 5. In this utility model, the cooling water tank at the bottom of the cavity can cool the inner cavity and the outer cavity at the same time, and can also cool the quartz fiber through the wire outlet hole, further improving the stability of the wire drawing operation and increasing the yield and production capacity.

[0025] 6. In this utility model, the thermocouple can feed back the temperature inside the wall to the control system in real time. The control system adjusts the current of the induction heating coil to correct the temperature, ensuring that the temperature inside the wall is constant, thereby ensuring the stability of operation and product quality. Attached Figure Description

[0026] Figure 1 This is a perspective view of a ring-shaped non-contact quartz fiber production heating and melting device proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of a thermocouple for a ring-shaped non-contact quartz fiber production heating and melting device proposed in this utility model;

[0028] Figure 3 This is a cross-sectional view of the outer cavity of a ring-shaped non-contact quartz fiber production heating and melting device proposed in this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0030] Legend:

[0031] 1. Outer cavity; 2. Outer cavity cover; 3. Guide rod hole; 4. Inner cavity; 5. Inner cavity cover; 6. Insulating layer; 7. Inert gas tank; 8. Gas tank cover; 9. Inert gas inlet; 10. Heating ring; 11. Heat insulation tube; 12. Induction heating coil; 13. Heating hole; 14. Wire outlet hole; 15. Cooling water tank; 16. Water inlet pipe; 17. Thermocouple; 18. Wire outlet; 19. Air inlet pipe; 20. Water outlet pipe. Detailed Implementation

[0032] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-3 This utility model provides an embodiment of a ring-shaped non-contact quartz fiber production heating and melting device, comprising an outer cavity 1. The outer cavity 1 serves as the external load-bearing structure of the entire device, providing space for the installation and operation of internal components, and playing a protective and supporting role. An outer cavity cover 2 is fixedly connected to the top of the outer cavity 1, which tightly covers the top of the outer cavity 1, effectively preventing external impurities from entering the device and affecting the quartz fiber production process. Multiple guide rod holes 3 are opened on the surface of the outer cavity cover 2, which are used to insert guide rods. During the quartz fiber production process, the guide rods can guide the raw materials into a designated position inside the device, preparing for the subsequent heating and melting process. An inner cavity 4 is fixedly connected inside the outer cavity 1. The inner cavity 4 is located inside the outer cavity 1 and is a key area that directly participates in the heating and melting of quartz fibers. It works in conjunction with the outer cavity 1 to ensure the functionality of the entire device. An inner cavity cover 5 is fixedly connected to the top of the inner cavity 4, which seals the top of the inner cavity 4 to prevent excessive heat loss from the top and also helps to maintain a stable environment inside the inner cavity 4. The inner cavity 4 is equipped with a heating component, which is the core part for heating and melting the quartz fiber raw material. By converting electrical energy into heat energy, the quartz fiber raw material is brought to a molten state so that it can be drawn into fibers later.

[0034] Reference Figure 4 The heating assembly includes a heating ring 10, which is installed inside the inner cavity 4. As the main heating element of the heating assembly, the heating ring 10 provides the required high-temperature environment for the quartz fiber raw material through its own heating. Multiple heat insulation tubes 11 are fixedly connected to the bottom of the heating ring 10. The heat insulation tubes 11 are used to prevent heat from being transferred downwards, avoiding excessive heat loss to the bottom of the device, improving energy utilization efficiency, and allowing more heat to be concentrated in the inner cavity 4 for heating and melting the raw material. Multiple heating holes 13 are opened on the top of the heating ring 10. The heating holes 13 are used to apply the heat generated by the heating ring 10 more evenly to the quartz fiber raw material placed above the heating ring 10, which helps to achieve uniform heating of the raw material. An induction heating coil 12 is sleeved on the outer wall of the heating ring 10. The induction heating coil 12 generates an induced current in the heating ring 10 through the principle of electromagnetic induction, thereby generating heat. This non-contact heating method can quickly and efficiently provide heat to the heating ring 10, and the heating process is relatively clean, reducing the pollution problems that may be caused by traditional heating methods.

[0035] Reference Figure 3 An insulating layer 6 is filled between the inner cavity 4 and the outer cavity 1. The insulating layer 6 is used for insulation to prevent leakage between the inner cavity 4 and the outer cavity 1. At the same time, its heat preservation performance can effectively reduce the heat loss from the inside of the device to the outside, maintain the high temperature environment inside the device, and reduce energy consumption. An inert gas tank 7 is opened between the top of the inner wall of the insulating layer 6 and the inner cavity cover 5. The inert gas tank 7 is used to store inert gas. The inert gas can create an inert environment inside the device to prevent the quartz fiber raw material from reacting with oxygen in the air during the heating and melting process. Multiple inert gas inlet holes 9 are opened on the bottom wall of the inert gas tank 7. The inert gas inlet holes 9 can make the inert gas in the inert gas tank 7 enter the inner cavity 4 evenly, effectively covering the quartz fiber raw material and further enhancing the protection effect. A gas tank cover 8 is set on the top of the inert gas tank 7 to prevent the leakage of inert gas.

[0036] Reference Figures 2-4 The inner cavity 4 has a cooling water tank 15 at the bottom. The function of the cooling water tank 15 is to quickly cool the drawn quartz fiber after it has been heated, melted and drawn, so that the fiber can be quickly shaped and the quality and performance of the fiber can be guaranteed. The bottom left side of the outer cavity 1 is fixedly connected to the water inlet pipe 16, which is used to introduce external cooling water into the cooling water tank 15 to provide continuous cooling water for the cooling process. The bottom right side of the outer cavity 1 is fixedly connected to the water outlet pipe 20, which discharges the hot water that has absorbed heat in the cooling water tank 15 to form a circulation of cooling water. Both the water inlet pipe 16 and the water outlet pipe 20 are connected to the cooling water tank 15. The connection design ensures that the cooling water can circulate smoothly in the cooling water tank 15 to achieve effective cooling of the drawn fiber.

[0037] Reference Figure 4 The inner cavity 4 has multiple fiber outlet holes 14 on its surface. The fiber outlet holes 14 are channels for the molten quartz fibers to flow out. Multiple fiber outlet holes 14 can realize the simultaneous drawing of multiple fibers, improving production efficiency. The number of fiber outlet holes 14, heating holes 13 and heat insulation tubes 11 are equal. The correspondence in number helps to ensure that the molten raw material generated in each heating zone has a corresponding fiber outlet channel, realizing precise matching between heating and fiber output. The heating hole 13 is a trumpet shape that is wider at the top and narrower at the bottom. This shape is conducive to the accumulation and downward transfer of heat, so that the quartz fiber raw material located above the heating hole 13 can better absorb heat. The fiber outlet hole 14 is a trumpet shape that is narrower at the top and wider at the bottom. This shape facilitates the smooth flow of molten quartz fibers under gravity and drawing force. Moreover, as the outlet gradually widens during the flow process, it can reduce the adhesion between fibers and ensure the quality of the fibers.

[0038] Reference Figure 2and Figure 3 A thermocouple 17 is fixedly connected to the bottom center of the inner cavity 4. The thermocouple 17 serves as a temperature measuring element, enabling real-time and accurate measurement of the temperature at the bottom of the inner cavity 4. By monitoring the temperature at this location, operators can promptly understand the internal temperature of the device and adjust the operating status of the heating components accordingly.

[0039] Reference Figures 1-3 Two air inlet pipes 19 are fixedly connected to the outer wall of the outer cavity 1. The air inlet pipes 19 are connected to the inert gas tank 7. The air inlet pipes 19 are used to introduce external inert gas into the inert gas tank 7. The design of two air inlet pipes 19 can make the inert gas enter the inert gas tank 7 more quickly and evenly.

[0040] Reference Figure 2 The bottom of the outer cavity 1 is provided with a fiber outlet 18, which is the channel for the final output device of the quartz fiber after it has been cooled and shaped by the cooling water tank 15. The produced quartz fiber can be collected and processed.

[0041] Working principle: When it is necessary to heat and melt quartz fibers, a guide rod is inserted through the guide rod hole 3 on the outer cavity cover 2 to guide the quartz fiber raw material into the inner cavity 4. Then, the induction heating coil 12 is energized, and the heating ring 10 generates an induced current and heats up by using the principle of electromagnetic induction. The heat generated by the heating ring 10 is evenly transferred to the upper guide rod through the heating hole 13 at the top, so that the quartz fiber raw material inside the guide rod is gradually heated and melted. Then, external inert gas is introduced into the inert gas tank 7 through the air inlet pipe 19. The inert gas inlet hole 9 on the bottom wall of the inert gas tank 7 allows the inert gas to enter the inner cavity 4 evenly, forming an inert environment around the quartz fiber raw material to prevent it from chemically reacting with oxygen in the air during the heating and melting process.

[0042] The molten quartz fiber flows out through the heat insulation tube 11 and the fiber outlet 14 on the surface of the inner cavity 4. During the flow of the quartz fiber, it is cooled by the cooling water inside the cooling water tank 15. After being cooled and shaped by the cooling water tank 15, the quartz fiber is discharged through the fiber outlet 18 at the bottom of the outer cavity 1 for subsequent processing.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ring-shaped non-contact quartz fiber production heating and melting device, comprising an outer cavity (1), characterized in that: The outer cavity (1) is fixedly connected to the top of the outer cavity cover (2), and the outer cavity cover (2) has multiple guide rod holes (3) on its surface. The outer cavity (1) is fixedly connected to the inside of the inner cavity (4), and the top of the inner cavity (4) is fixedly connected to the top of the inner cavity cover (5). The inner cavity (4) is equipped with a heating component. The heating assembly includes a heating ring (10), which is installed inside the inner cavity (4). Multiple heat insulation tubes (11) are fixedly connected to the bottom of the heating ring (10), and multiple heating holes (13) are opened on the top of the heating ring (10). An induction heating coil (12) is sleeved on the outer wall of the heating ring (10).

2. The annular non-contact quartz fiber production heating and melting device according to claim 1, characterized in that: An insulating layer (6) is filled between the inner cavity (4) and the outer cavity (1). An inert gas groove (7) is provided between the top of the inner wall of the insulating layer (6) and the inner cavity cover (5). A plurality of inert gas inlet holes (9) are provided on the bottom wall of the inert gas groove (7). A gas groove cover (8) is provided on the top of the inert gas groove (7).

3. The annular non-contact quartz fiber production heating and melting device according to claim 1, characterized in that: The inner cavity (4) has a cooling water tank (15) at the bottom. The outer cavity (1) has an inlet pipe (16) fixedly connected to the left side of the bottom and an outlet pipe (20) fixedly connected to the right side of the bottom. The inlet pipe (16) and the outlet pipe (20) are both connected to the cooling water tank (15).

4. The annular non-contact quartz fiber production heating and melting device according to claim 1, characterized in that: The inner cavity (4) has multiple wire outlet holes (14) on its surface. The number of wire outlet holes (14), heating holes (13), and heat insulation tubes (11) are equal. The heating holes (13) are flared shapes that are wider at the top and narrower at the bottom, and the wire outlet holes (14) are flared shapes that are narrower at the top and wider at the bottom.

5. The annular non-contact quartz fiber production heating and melting device according to claim 1, characterized in that: A thermocouple (17) is fixedly connected to the bottom middle side of the inner cavity (4).

6. The annular non-contact quartz fiber production heating and melting device according to claim 2, characterized in that: The outer wall of the outer cavity (1) is fixedly connected to two air inlet pipes (19), and the air inlet pipes (19) and the inert gas tank (7) are connected.

7. The annular non-contact quartz fiber production heating and melting device according to claim 1, characterized in that: The bottom of the outer cavity (1) is provided with a wire outlet (18).

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