Gas supply device and production system

Abstract

The utility model provides a gas supply device and a production system, and relates to the technical field of glass tube production. The gas supply device is used for glass tube forming and comprises a device body, a gas supply device and a gas supply device, the device body is provided with a cavity, the cavity comprises a cavity inlet and a cavity outlet, and the cavity outlet is used for being communicated with a glass tube forming device; the heating device is arranged in the cavity; and the air supply pipeline is communicated with the inlet of the cavity. According to the technical scheme, the gas provided by the gas supply pipeline is heated through the heating device arranged in the cavity of the device body, the influence of environment temperature change on the blowing temperature in the glass tube forming process can be reduced, and then the influence of temperature change on the glass tube quality is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of glass tube production, and in particular to a gas supply device and a production system. Background Art

[0002] The Danner process is a process for producing glass tubes. This process is mainly based on the principle of rotating and blowing molten glass. By controlling parameters such as temperature, rotation speed and blowing pressure, the molten glass is blown into the required glass tube.

[0003] The existing Danner process for producing glass tubes is as follows: the main body of the rotating tube is placed in a muffle furnace at a certain inclination angle, one end of the rotating tube is installed on the Danner machine through a mandrel, the Danner machine provides a stable rotation speed and air source, and the glass liquid is stably and evenly wound and distributed on the rotating tube at a suitable temperature. The glass liquid in the kiln falls on the rotating tube through the channel. Under the action of its own gravity and the rotation of the rotating tube, the glass liquid is wound on the rotating tube to form a uniform glass layer. The rotating tube is a hollow structure, and the glass layer is pulled by a traction machine and compressed air of a certain pressure is blown into the rotating tube to form a hollow tube root. The glass after the tube root leaves the end of the rotating tube is formed into a glass tube.

[0004] It can be seen from the production process of glass tubes that the stable control of blowing temperature has a great influence on the size and quality of glass tubes. However, in the existing glass tube production process, due to seasonal and environmental temperature changes, the blowing stability of glass tube molding is adversely affected. Especially when the temperature is low, it is easy to produce adhesion materials on the metal end of the rotating tube, resulting in stone nodules and stripes on the inner surface of the glass tube.

[0005] Therefore, a gas supply device is needed to at least solve the above problems. Utility Model Content

[0006] A technical problem to be solved by the present disclosure is: how to reduce the influence of ambient temperature changes on the blowing temperature during the glass tube forming process, so as to reduce the influence of temperature changes on the quality of the glass tube.

[0007] In order to solve the above technical problems, an embodiment of the present disclosure provides a gas supply device for glass tube forming, which includes: a device body, the device body has a cavity, the cavity includes a cavity inlet and a cavity outlet, and the cavity outlet is used to communicate with a glass tube forming device; a heating device, the heating device is arranged in the cavity; at least one gas supply pipeline, and the gas supply pipeline is connected to the cavity inlet.

[0008] In some embodiments, the gas supply device also includes: a temperature detection device, the detection end of the temperature detection device is arranged in the cavity; a controller, the controller is electrically connected to the heating device, the controller receives the temperature signal of the temperature detection device, and controls the power of the heating device according to the temperature signal.

[0009] In some embodiments, the gas supply pipeline is a pair, namely a first pipeline and a second pipeline, the first pipeline and the second pipeline are respectively connected to the cavity inlet; the first pipeline is used to provide a first gas, and the second pipeline is used to provide a second gas, and the first gas and the second gas are different.

[0010] In some embodiments, the first gas is compressed air; the second gas is glass tube modified gas.

[0011] In some embodiments, the glass tube modifying gas is any one of silane, hydrogen, and nitrogen.

[0012] In some embodiments, the gas supply device also includes: a first flow valve, which is arranged on the first pipeline; a second flow valve, which is arranged on the second pipeline; and a controller controls the flow of the first flow valve and / or the second flow valve according to the preset outer diameter information of the glass tube.

[0013] In some embodiments, the gas supply device also includes: a concentration detection device, which is arranged in the cavity and is used to detect the concentration of the second gas; the controller controls the flow of the first flow valve and / or the second flow valve according to the gas concentration signal detected by the concentration detection device.

[0014] In some embodiments, the heating device includes a plurality of heating elements, and the plurality of heating elements are evenly distributed in the cavity, or at least some of the heating elements are embedded in the inner wall of the cavity.

[0015] In some embodiments, the gas supply device further includes: a heat-insulating layer; the cavity outlet is connected to a third pipeline, the third pipeline is used to connect to the glass tube forming device; and the heat-insulating layer is coated on the third pipeline.

[0016] The embodiment of the present disclosure also provides a production system, including the above-mentioned gas supply device.

[0017] Through the above technical scheme, the gas supply device provided by the present invention is connected with the inlet of the cavity of the device body through the gas supply pipeline, and the outlet of the cavity is connected with the glass tube forming device, so that the gas supplied by the gas supply pipeline can pass through the cavity into the glass tube forming device for glass tube forming, and the gas can be heated by the heating device in the cavity, which can ensure that the gas reaches the ideal process temperature before entering the glass tube forming device, thereby reducing the temperature difference between the gas and the glass tube forming area, and avoiding the glass liquid from producing adhesion on the metal end of the rotating tube due to the low temperature of the blown gas, resulting in defects such as stone nodules and stripes on the inner surface of the glass tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the structure of a glass tube production system in the prior art disclosed in an embodiment of the present disclosure;

[0020] Figure 2 is a schematic structural diagram of the air supply device disclosed in the embodiment of the present disclosure;

[0021] Figure 3 It is a schematic diagram of the structure of the production system disclosed in the embodiment of the present disclosure.

[0022] Description of reference numerals:

[0023] 100, glass tube root; 200, muffle furnace; 300, feeding channel; 400, Danner machine; 500, mandrel blowing device;

[0024] 1. Device body; 101. Cavity; 2. Heating device; 3. Air supply pipeline; 301. First pipeline; 302. Second pipeline; 4. Temperature detection device; 5. Controller; 501. Control cabinet; 502. PLC unit; 6. First flow valve; 7. Second flow valve; 8. Insulation layer; 9. Third pipeline. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0026] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0027] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0028] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0029] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0030] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0032] The Dana method is generally used in the existing glass tube manufacturing technology. The process of producing glass tubes by the Dana method is as follows: Figure 1As shown, the mandrel blowing device 500 includes a rotating tube and a mandrel. The rotating tube is sleeved at one end of the mandrel, and the rotating tube is placed in the muffle furnace 200 at a certain tilt angle. The other end of the mandrel is installed on the Danner machine 400. The Danner machine 400 is used to provide a stable rotation speed to drive the mandrel to rotate so that the glass liquid is stably and evenly wound and distributed on the rotating tube. The glass liquid melted by the kiln falls on the rotating tube through the feeding channel 300. Under the action of its own gravity and the rotation of the rotating tube, the glass liquid is wound on the rotating tube and forms a uniform glass layer. The mandrel is a hollow structure and is connected to the blowing pipeline. The gas enters the muffle furnace 200 through the blowing pipeline and the mandrel. The glass layer is pulled by the traction machine and forms a hollow glass tube root 100 through the blown gas. The glass after the glass tube root 100 leaves the end of the rotating tube is formed into a glass tube. However, since the temperature in the muffle furnace 200 is too high, and the temperature of the gas blown in varies greatly due to seasonal and environmental influences, the blowing stability of the glass tube molding is affected. Especially when the gas temperature is low, the glass liquid is prone to adhere to the metal end of the rotating tube due to the temperature difference, and the resulting adhered material is prone to cause defects such as stone nodules and streaks on the inner surface of the glass tube.

[0033] Example 1

[0034] In order to solve the problems existing in the prior art, the present disclosure provides a gas supply device for glass tube molding, such as Figure 2 As shown, it includes: a device body 1, the device body 1 has a cavity 101, the cavity 101 includes a cavity 101 inlet and a cavity 101 outlet, and the cavity 101 outlet is used to communicate with a glass tube forming device; a heating device 2, the heating device 2 is arranged in the cavity 101; at least one gas supply pipeline 3, the gas supply pipeline 3 is connected to the cavity 101 inlet.

[0035] The core part of the gas supply device is a device body 1 having a cavity 101. At least one gas supply pipeline 3 is connected to the inlet of the cavity 101, which is responsible for supplying gas into the cavity 101. The supplied gas is used for glass tube molding. The inlet of the cavity 101 is used to introduce gas. The outlet of the cavity 101 is connected to the corresponding interface of the glass tube molding device, so that the gas supplied by the gas supply pipeline 3 can be delivered to the molding area. A heating device 2 is arranged inside the cavity 101. The heating device 2 is used to adjust, heat and maintain the temperature of the gas in the cavity 101 to ensure that the gas reaches the ideal process temperature before entering the glass tube molding device. The gas supply device provided in the embodiment of the present disclosure heats the gas through the heating device 2, reduces the temperature difference between the gas and the glass tube molding area, so as to promote the fluidity and uniformity of the glass melt, and avoids the glass melt from producing adhesion material on the metal end of the rotating tube due to the low temperature of the gas blown in, resulting in defects such as stone nodules and stripes on the inner surface of the glass tube, which can effectively improve the molding efficiency and product quality of the glass tube.

[0036] In some embodiments, the heating device 2 includes a plurality of heating elements, and the plurality of heating elements are evenly distributed in the cavity 101 , or at least some of the heating elements are embedded in the inner wall of the cavity 101 .

[0037] The heating element may be an electric heating element, an infrared radiation heater or other forms of heating components. Multiple heating elements are evenly distributed inside the cavity 101 to form a three-dimensional, all-round heating layout. This uniform arrangement can ensure that the gas in the cavity 101 is heated evenly to avoid local overheating or cold spots. Alternatively, at least part of the heating elements are embedded in the inner wall of the cavity 101, and the wall of the cavity 101 is used for indirect heating, which not only saves space, but also enables heat to be more evenly transferred from all sides to the gas in the cavity 101, further ensuring heating efficiency and uniformity. Through the uniform arrangement of multiple heating elements or the inner wall embedded design, uniform and stable heat distribution can be provided, and accurate and uniform heating of the gas in the cavity 101 is achieved, which helps to improve the quality and consistency of the glass tube. The design of multi-point heating can quickly increase the temperature in the cavity 101 to the set value and keep it stable, reducing energy waste and improving the operating efficiency of the equipment.

[0038] The device body 1 may be rectangular or cuboid, which is convenient for evenly distributing the heating elements, ensuring that the gas can be fully heated and evenly mixed with the modified gas when passing through the entire cavity 101 from the inlet to the outlet. Alternatively, the device body 1 may be a cylindrical or tubular structure, and the cylindrical design can optimize the gas flow path, reduce flow resistance, and make the gas flow more smoothly in the cavity 101. At the same time, the circular inner wall is more conducive to the arrangement of embedded heating elements, achieving 360-degree surrounding heating and ensuring uniform heat distribution.

[0039] In some embodiments, the gas supply device also includes: a temperature detection device 4, the detection end of the temperature detection device 4 is arranged in the cavity 101; a controller 5, the controller 5 is electrically connected to the heating device 2, the controller 5 receives the temperature signal of the temperature detection device 4, and controls the power of the heating device 2 according to the temperature signal.

[0040] The temperature detection device 4 can be a thermocouple, an infrared thermometer, etc., which is used to monitor and obtain the gas temperature information in the cavity 101 in real time. A through hole is provided on the side wall of the device body 1, and the detection end of the temperature detection device 4 is directly placed in the cavity 101 through the through hole, and a sealing device, such as a high temperature resistant sealing pad, is provided at the connection between the temperature detection device 4 and the device body 1 to ensure that the measurement data accurately reflects the gas temperature under the actual working state. The controller 5 is electrically connected to the heating device 2 and the temperature detection device 4 respectively, and the controller 5 can receive the temperature signal from the temperature detection device 4 and process and analyze according to the received temperature data. Among them, the controller 5 includes a control cabinet 501 and a PLC unit 502, the control cabinet 501 is electrically connected to the PLC unit 502, the PLC unit 502 receives the temperature signal from the temperature detection device 4, and through the computing power and logic control function of the PLC unit 502, it can send instructions to the control cabinet 501 according to the preset temperature curve or algorithm, and the control cabinet 501 automatically adjusts the working power of the heating device 2 to accurately control the gas temperature in the cavity 101. The closed-loop control of the gas temperature in the cavity 101 is achieved through the combination of the temperature detection device 4 and the controller 5, thereby improving the temperature control accuracy. By automatically adjusting the power of the heating device 2, the problem of overheating or insufficient temperature can be effectively prevented, thereby avoiding the influence of temperature fluctuations on the quality of glass tube molding, and improving the consistency of product quality and the yield rate.

[0041] In some embodiments, Figure 2 As shown, the gas supply pipeline 3 is a pair, namely a first pipeline 301 and a second pipeline 302, the first pipeline 301 and the second pipeline 302 are respectively connected to the entrance of the cavity 101; the first pipeline 301 is used to provide a first gas, and the second pipeline 302 is used to provide a second gas, and the first gas is different from the second gas.

[0042] The first pipeline 301 and the second pipeline 302 are connected to the entrance of the cavity 101. The first pipeline 301 is responsible for providing a first gas of a specific property, while the second pipeline 302 is used to transport a second gas different from the first gas. In this way, according to the specific requirements of the glass tube forming process, by controlling the proportion or sequence of different gases entering the cavity 101, the thickness, composition and mechanical properties of the oxide layer on the inner wall of the glass tube can be finely controlled. For example, in some processes, one gas may be used for glass tube forming, and another gas may be used to promote a specific chemical reaction, thereby improving the performance indicators of the glass tube.

[0043] In some embodiments, the first gas is compressed air; the second gas is glass tube modified gas.

[0044] The first pipeline 301 is used to communicate with the air compressor. After being purified, dried and other pre-processed, the compressed air enters the cavity 101 through the first pipeline 301 to provide a certain gas pressure support and possible cooling effect for the glass tube forming process. The second pipeline 302 transports the glass tube improvement gas, which can be selected according to the specific performance optimization requirements in the glass tube production process. For example, the improvement gas can be hydrogen to reduce the oxygen content of the molten glass and improve its light transmittance; it can also be argon or other inert gases to prevent oxidation reactions and maintain the purity of the glass; or in special circumstances, it is necessary to add certain chemical components to change the physical properties of the glass (such as hardness, refractive index, etc.).

[0045] By independently controlling the input of compressed air and glass tube improving gas, the gas composition and pressure in the molding environment can be precisely adjusted. The glass tube improving gas can specifically improve the surface quality of the inner wall of the glass tube, which helps to manufacture high-quality glass tubes that meet specific performance requirements.

[0046] In some embodiments, the glass tube modifying gas is any one of silane, hydrogen, and nitrogen.

[0047] Silane can be evenly deposited on the inner wall of the glass tube, and completes attachment and reaction at high temperature to form a layer of silicon oxide film, thereby changing the properties of the inner wall of the glass, such as improving corrosion resistance, reducing friction coefficient or achieving hydrophobic treatment; hydrogen can be used for reduction treatment at high temperature, such as annealing to relieve stress, and hydrogen can help eliminate residual stress inside the glass tube; nitrogen is often used as an inert protective gas, filling the inside of the glass tube to prevent oxygen and other active gases from reacting with the inner wall material, maintaining the stability and cleanliness of the inner wall, especially in some applications with high purity requirements or susceptible to oxidation. By introducing different modified gases, customized production can be carried out for different types of glass tube products to meet the unique requirements of various application fields for glass performance.

[0048] In some embodiments, the gas supply device also includes: a first flow valve 6, which is arranged on the first pipeline 301; a second flow valve 7, which is arranged on the second pipeline 302; and the controller 5 controls the flow of the first flow valve 6 and / or the second flow valve 7 according to the preset outer diameter information of the glass tube.

[0049] The first pipeline 301 delivers compressed air, while the second pipeline 302 is responsible for delivering specific gases used to improve the performance of glass management. A first flow valve 6 is installed on the first pipeline 301, which can accurately control the gas flow entering the heating cavity 101 or the molding area through it. Similarly, a second flow valve 7 is configured on the second pipeline 302 to regulate the flow of improved gases such as silane, hydrogen, and nitrogen delivered to the glass tube processing process. The controller 5 is electrically connected to the first flow valve 6 and the second flow valve 7 respectively. The PLC unit 502 in the controller 5 can use the information such as the outer diameter of the preset glass tube as an input parameter, and intelligently adjust the working state of the two flow valves based on this information. By adjusting the flow of the first flow valve 6 and the second flow valve 7 according to the preset outer diameter information of the glass tube by the controller 5, the gas flow and the mixing ratio of various gases can be accurately controlled according to the production requirements of glass tubes of different specifications, thereby reducing the fluctuation of the glass tube size, physical and chemical properties caused by uneven gas supply in different batches or even in the same batch.

[0050] In some embodiments, the gas supply device also includes: a concentration detection device, which is arranged in the cavity 101 and is used to detect the concentration of the second gas; the controller 5 controls the flow of the first flow valve 6 and / or the second flow valve 7 according to the gas concentration signal detected by the concentration detection device.

[0051] The concentration detection device is electrically connected to the controller 5 (not shown in the figure), and can transmit the detected gas concentration signal to the controller 5 in real time. The concentration detection device can realize closed-loop automatic control of the concentration of the modified gas. When the controller 5 receives the concentration signal sent by the concentration detection device, it can compare the actual detection result with the concentration target value required for the preset glass tube inner wall improvement, and adjust the opening of the first flow valve 6 and / or the second flow valve 7 accordingly, so as to accurately control the ratio of the two gases entering the cavity 101, and ensure that the concentration of the modified gas is maintained within the required range. By real-time monitoring and feedback of the modified gas concentration, the unstable performance of the glass tube caused by gas concentration fluctuations can be effectively prevented, and the consistency of product quality in the production process can be ensured.

[0052] The concentration detection device can also be a gas detector or a composite gas analyzer that can detect the type and concentration of gas at the same time. For example, a laser absorption spectrometer can accurately measure the gas concentration based on the change of the specific absorption spectrum when the laser beam passes through the measured gas; or a gas chromatograph or a mass spectrometer can accurately measure the concentration of multiple gases by separating and quantifying each component in the mixed gas; for gases with specific infrared absorption spectrum, the concentration detection device can be an infrared spectrum sensor, which measures the absorption degree of the gas to infrared light of a specific wavelength and calculates the concentration of the gas according to the Lambert-Beer law. The controller 5 receives the gas type and concentration information fed back by the concentration detection device in real time, and accurately adjusts the opening of the first flow valve 6 and the second flow valve 7 according to the gas required for the preset glass tube inner wall improvement and the concentration of the gas, so as to ensure that the proportion and total amount of the gas components entering the glass tube forming device are kept within the preset target value range.

[0053] In some embodiments, the gas supply device further includes: a heat-insulating layer 8 ; the outlet of the cavity 101 is connected to a third pipeline 9 , and the third pipeline 9 is used to connect to the glass tube forming device; and the heat-insulating layer 8 is coated on the third pipeline 9 .

[0054] In order to reduce heat loss, maintain stable gas temperature and improve energy efficiency, an insulation layer 8 is added to the third pipeline 9 connected to the glass tube forming device at the outlet of the cavity 101 of the device body 1. The third pipeline 9 is responsible for transporting the heated and mixed gas from the outlet of the cavity 101 of the gas supply device to the glass tube forming device. The insulation layer 8 can be made of high-efficiency insulation materials, such as insulation cotton, aluminum silicate fiber, polyurethane foam, etc., tightly wrapped on the outside of the third pipeline 9. The insulation layer 8 effectively reduces the heat transferred from the gas to the surrounding environment during the transportation process of the third pipeline 9, ensuring that the high temperature or specific temperature gas can enter the glass tube forming area in a constant state, which is conducive to maintaining the temperature conditions required for the molding process, thereby ensuring the quality and production stability of the glass tube. In order to ensure that the gas temperature during the transmission process does not drop too much due to environmental factors, the third pipeline 9 must be able to withstand high temperatures and have good sealing performance.

[0055] The use process of the gas supply device provided in the embodiment of the present disclosure is as follows:

[0056] Compressed air is introduced into the cavity 101 through the first pipeline 301, and the glass tube modified gas is introduced into the cavity 101 through the second pipeline 302. The compressed air and the glass tube modified gas are mixed in the cavity 101 and heated to an appropriate temperature by the heating device 2 according to the preset temperature information. A concentration detection device is installed in the cavity 101 to monitor the concentration of the modified gas in real time and feed back the signal to the controller 5. The controller 5 adjusts the opening of the first flow valve 6 and / or the second flow valve 7 according to the preset target concentration and the actual detection results to ensure the stability of the modified gas concentration. The heated and precisely proportioned mixed gas is then transmitted to the glass tube forming device through the third pipeline 9 protected by the insulation layer 8. The insulation layer 8 ensures that the heat loss of the high-temperature gas is minimized during the transmission process. The mixed gas contacts the glass melt at high temperature and provides a certain pressure to support the glass tube forming. The gas supply device provided by the embodiment of the present disclosure realizes the automatic management of the glass tube forming process parameters by accurately controlling the gas concentration, temperature and flow rate, reduces the quality difference between batches, reduces the temperature difference between the gas and the glass tube forming area, promotes the fluidity and uniformity of the molten glass, and avoids the glass liquid from producing adhesion materials on the metal end of the rotating tube due to the low temperature of the blown gas, resulting in defects such as stone nodules and stripes on the inner surface of the glass tube, thereby improving the consistency and qualified rate of the product. The simultaneous introduction of heated and modified gas during the glass tube blowing process can optimize the final quality of the glass tube and meet the special requirements in different application scenarios.

[0057] Example 2

[0058] The embodiment of the present disclosure provides a production system, such as Figure 3 As shown, it includes the air supply device provided by the above embodiment.

[0059] The production system also includes a kiln, which is used to provide molten glass; a glass tube forming device, which uses the Danner process to make glass tubes; and a traction machine, which is arranged downstream of the glass tube forming device and is used to traction the tube root of the glass tube.

[0060] If the glass tube modified gas in the gas supply device uses modified gases such as silane, these gases may be toxic or flammable in some cases. In order to ensure production safety and environmental protection, such gases must be effectively recovered or eliminated. Therefore, a gas recovery or removal device must also be set up in the production system. For example, an exhaust gas collection device can be installed at the end of the glass tube forming device to ensure that all escaping modified gases can be collected together instead of being directly discharged into the atmosphere. Alternatively, an adsorption device can be set at the end of the glass tube forming device. The adsorption device uses specific adsorption materials (such as activated carbon, molecular sieves, etc.) to adsorb toxic and harmful gases, and fixes them on the surface of the adsorbent through physical adsorption or chemical reaction. The adsorbent that has been saturated with adsorption can then be regenerated or safely disposed of.

[0061] The embodiments of the present disclosure provide a production system that, by adopting the gas supply device provided in Embodiment 1 of the present disclosure, can accurately control the temperature of the gas blown into the glass tube forming area, thereby ensuring that the molten glass flows and forms in a uniform and stable high-temperature environment, improving the consistency and qualified rate of the products, and being able to directly improve the physical and chemical properties of the inner wall of the glass tube during the glass tube forming process, further improving the production efficiency and product yield.

[0062] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0063] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A gas supply device for glass tube forming, characterized in that: include: A device body (1), the device body (1) having a cavity (101), the cavity (101) comprising a cavity (101) inlet and a cavity (101) outlet, the cavity (101) outlet being used to communicate with a glass tube forming device; A heating device (2), wherein the heating device (2) is arranged in the cavity (101); At least one air supply pipeline (3), wherein the air supply pipeline (3) is in communication with an inlet of the cavity (101).

2. The air supply device according to claim 1, characterized in that: Also includes: A temperature detection device (4), wherein a detection end of the temperature detection device (4) is arranged in the cavity (101); A controller (5), the controller (5) being electrically connected to the heating device (2), the controller (5) receiving a temperature signal from the temperature detection device (4) and controlling the power of the heating device (2) according to the temperature signal.

3. The air supply device according to claim 2, characterized in that: The air supply pipeline (3) is a pair, namely a first pipeline (301) and a second pipeline (302); the first pipeline (301) and the second pipeline (302) are respectively connected to the inlet of the cavity (101); The first pipeline (301) is used to provide a first gas, and the second pipeline (302) is used to provide a second gas, and the first gas is different from the second gas.

4. The air supply device according to claim 3, characterized in that: The first gas is compressed air; The second gas is glass tube modified gas.

5. The air supply device according to claim 4, characterized in that: The glass tube improving gas is any one of silane, hydrogen and nitrogen.

6. The gas supply device according to claim 3, characterized in that: Also includes: a first flow valve (6), the first flow valve (6) being arranged on the first pipeline (301); a second flow valve (7), wherein the second flow valve (7) is arranged on the second pipeline (302); The controller (5) controls the flow rate of the first flow valve (6) and / or the second flow valve (7) according to preset outer diameter information of the glass tube.

7. The air supply device according to claim 6, characterized in that: Also includes: A concentration detection device is disposed in the cavity (101) and is used to detect the concentration of the second gas; the controller (5) controls the flow of the first flow valve (6) and / or the second flow valve (7) according to the gas concentration signal detected by the concentration detection device.

8. The air supply device according to claim 2, characterized in that: The heating device (2) comprises a plurality of heating elements, and the plurality of heating elements are evenly distributed in the cavity (101), or at least some of the heating elements are embedded in the inner wall of the cavity (101).

9. The air supply device according to claim 1, characterized in that: Also includes: Insulation layer (8); The cavity (101) outlet is connected to a third pipeline (9), and the third pipeline (9) is used to connect to the glass tube forming device; the thermal insulation layer (8) is coated on the third pipeline (9).

10. A production system, characterized in that: Comprising the gas supply device according to any one of claims 1 to 9.

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