Glass production apparatus and glass production line

Abstract

The utility model discloses a glass production equipment and glass production line relates to glass manufacturing technical field, and this glass production equipment includes feed pipe, forming device, flow monitoring device and temperature control device, and the inside of feed pipe is equipped with runner, and the feed end of runner is in communication with the discharge end of feeding equipment, the inside of forming device is formed with the liquid collecting cavity and the forming cavity that communicate in turn along up and down, and the top of forming device is equipped with the feed end in communication with runner, and the bottom of forming device is equipped with the discharge slit in communication with forming cavity, temperature control device includes first temperature control part and second temperature control part, and first temperature control part electricity is connected flow detection device, is used for receiving flow signal and is adjusted according to flow signal temperature of runner, and second temperature control part is used for adjusting the temperature of liquid collecting cavity and forming cavity. The utility model aims at solving the problem that glass liquid flow is not stable because of temperature fluctuation and the forming precision is not up to standard in the narrow slit down-draw method.

Description

Technical Field

[0001] This utility model relates to the field of glass manufacturing technology, and in particular to a glass production equipment and a glass production line. Background Technology

[0002] In the field of flexible ultrathin glass manufacturing, the slit pull method is a key process. Its principle is as follows: molten glass is introduced into a specific tank, and the molten glass flows out from the slit at the bottom of the tank. With the help of its own gravity and the synergistic effect of external pull force, it is pulled into flexible ultrathin glass. The core structure of the device for this process includes: a platinum alloy tank (used to contain and guide molten glass), a slit structure (a channel for molten glass to flow out) located at the bottom of the tank, a platinum channel (connecting the furnace and the tank to transport molten glass) and a forming furnace (providing the temperature environment required for forming molten glass).

[0003] However, the viscosity of molten glass is easily affected by temperature and composition fluctuations, which directly leads to unstable molten glass flow and makes the finished product's forming accuracy substandard. Utility Model Content

[0004] The main purpose of this invention is to propose a glass production equipment that aims to solve the problems of unstable glass melt flow rate and substandard forming accuracy caused by temperature fluctuations in the slit-pull method.

[0005] To achieve the above objectives, this utility model proposes a glass production equipment, comprising: The feed pipe has a flow channel inside, and the feed end of the flow channel is connected to the discharge end of the feeding device; A molding device, wherein the interior of the molding device has a liquid collection chamber and a molding chamber that are connected sequentially in the vertical direction, the top of the molding device is provided with a feed end that communicates with the flow channel, and the bottom of the molding device is provided with a discharge slit that communicates with the molding chamber. A flow monitoring device, wherein the flow monitoring device is disposed within the flow channel and electrically connected to the first temperature control unit, is used to detect the flow rate within the flow channel in real time and output a flow signal; and A temperature control device, comprising a first temperature control unit and a second temperature control unit, wherein the first temperature control unit is electrically connected to the flow detection device and is used to receive the flow signal and adjust the temperature of the flow channel according to the flow signal; and the second temperature control unit is used to adjust the temperature of the liquid collection chamber and the molding chamber.

[0006] In one embodiment, the feed pipe includes a feed platinum pipe, a flow control platinum pipe, and a discharge platinum pipe connected in sequence. The feed platinum pipe has a feed chamber inside, and the feed end of the feed chamber is connected to the discharge end of the feeding device. The flow control platinum pipe has a flow control chamber inside, and the feed end of the flow control chamber is connected to the discharge end of the feed chamber. The discharge platinum pipe has a discharge chamber inside, and the feed end of the discharge chamber is connected to the discharge end of the flow control chamber. The discharge end of the discharge chamber is connected to the liquid collection chamber. The feed chamber, the flow control chamber, and the discharge chamber together constitute the flow channel.

[0007] In one embodiment, the length of the feed platinum tube is less than the length of the flow control platinum tube.

[0008] In one embodiment, both the feed platinum tube and the discharge platinum tube extend vertically, while the flow control platinum tube extends horizontally; and / or The flow-controlling platinum tube is a corrugated platinum tube.

[0009] In one embodiment, the feed pipe further includes a first flange, a second flange, a third flange, and a fourth flange. The first flange is disposed on the feed platinum pipe near the feed end of the feed chamber; the second flange is disposed on the flow control platinum pipe near the discharge end of the feed chamber; the third flange is disposed on the discharge platinum pipe near the discharge end of the flow control chamber; and the fourth flange is disposed on the discharge platinum pipe near the discharge end of the discharge chamber. The first flange, the second flange, and the feed platinum pipe constitute a first heating circuit; the second flange, the third flange, and the flow control platinum pipe constitute a second heating circuit; and the third flange, the fourth flange, and the discharge platinum pipe constitute a third heating circuit. The first temperature control unit includes a first temperature controller, a second temperature controller, and a third temperature controller. The first temperature controller is electrically connected to the first flange and the second flange to change the current power flowing through the first heating circuit. The second temperature controller is electrically connected to the second flange and the third flange to change the current power flowing through the second heating circuit. The third temperature controller is electrically connected to the third flange and the fourth flange to change the current power flowing through the third heating circuit.

[0010] In one embodiment, the molding apparatus includes a first platinum container and a second platinum container disposed at the bottom of the first platinum container. The first platinum container has the liquid collection cavity formed inside it. The second platinum container has the molding cavity formed inside it. The discharge slit is provided on the side of the second platinum container opposite to the first platinum container.

[0011] In one embodiment, the second platinum container includes a container body and a base plate, wherein the forming cavity is formed inside the container body; the base plate is disposed at one end of the container body opposite to the first platinum container and is detachably connected to the container body, and the base plate begins to have the discharge slit; and / or The outer wall of the first platinum container has a pressure stabilizing hole that connects to the liquid collection chamber.

[0012] In one embodiment, the first platinum container has a triangular cross-sectional shape, with the feed end located at its small end, and the large end connected to the second platinum container; and / or The second platinum container has a rectangular cross-sectional shape.

[0013] In one embodiment, the molding apparatus further includes a fifth flange, a sixth flange, and a seventh flange. The fifth flange is disposed at the inlet end of the first platinum container near the liquid collection chamber; the sixth flange is disposed at the outlet end of the second platinum container near the liquid collection chamber; and the seventh flange is disposed at the outlet end of the second platinum container near the molding chamber. The fifth flange, the sixth flange, and the first platinum container constitute the fourth heating circuit; the sixth flange, the seventh flange, and the second platinum container constitute the fifth heating circuit. The second temperature control unit includes a fourth temperature controller and a fifth temperature controller. The fourth temperature controller is electrically connected to the fifth flange and the sixth flange to change the current power flowing through the fourth heating circuit. The fifth temperature controller is electrically connected to the sixth flange and the seventh flange to change the current power flowing through the fifth heating circuit.

[0014] This utility model also provides a glass production line, including the glass production equipment as described above.

[0015] The glass production equipment provided by this invention solves the problems of unstable glass melt flow and substandard forming accuracy caused by temperature fluctuations in the slit-pull method by using a flow monitoring device and a temperature control device to control the temperature of the feed pipe and forming device in a closed loop. Specifically, the flow monitoring device detects the glass melt flow rate in the flow channel in real time and outputs a flow signal; after receiving the flow signal, the first temperature control unit immediately calculates the temperature correction amount against the set value and dynamically adjusts the heating / cooling power of the flow channel to keep the glass melt viscosity within the target range, thereby stabilizing the flow rate. The second temperature control unit independently controls the temperature of the collecting chamber and the forming chamber to ensure that the glass melt has a consistent temperature and viscosity along the pull path, avoiding sudden changes in flow rate caused by local overcooling or overheating. In this way, with the synergistic effect of the above-mentioned multi-stage temperature control and flow feedback, this invention achieves high-precision and stable control of the glass melt flow rate, significantly improving the thickness uniformity and surface quality of flexible ultrathin glass and reducing the scrap rate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the glass production equipment provided by this utility model; Figure 2 A schematic diagram of another embodiment of the glass production equipment provided by this utility model; Figure 3 A schematic diagram of an embodiment of the molding apparatus provided by this utility model.

[0018] Explanation of icon numbers: 1000. Glass production equipment; 1. Feed pipe; 11. Feed platinum pipe; 12. Flow control platinum pipe; 13. Discharge platinum pipe; 14. First flange; 15. Second flange; 16. Third flange; 17. Fourth flange; 131. First platinum pipe section; 132. Second platinum pipe section; 2. Forming device; 21. First platinum container; 211. Liquid collection chamber; 212. Pressure stabilizing hole; 213. Suspended area; 22. Second platinum container; 221. Container body; 2211. Forming cavity; 222. Base plate; 2221. Discharge slit; 23. Fifth flange; 24. Sixth flange; 25. Seventh flange.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] 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 scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This utility model proposes a glass production equipment 1000.

[0024] Please see Figure 1 In one embodiment, the glass production equipment 1000 proposed by this utility model includes: Feed pipe 1, the inside of feed pipe 1 is provided with a flow channel, and the feed end of the flow channel is connected to the discharge end of the feeding equipment; The molding device 2 has a liquid collection chamber 211 and a molding chamber 2211 that are connected sequentially in the vertical direction inside the molding device 2. The top of the molding device 2 is provided with a feed end that is connected to the flow channel, and the bottom of the molding device 2 is provided with a discharge slit 2221 that is connected to the molding chamber 2211. A flow monitoring device, located within the flow channel and electrically connected to the first temperature control unit, is used to detect the flow rate within the flow channel in real time and output a flow signal; and The temperature control device includes a first temperature control unit and a second temperature control unit. The first temperature control unit is electrically connected to a flow detection device and is used to receive flow signals and adjust the temperature of the flow channel according to the flow signals. The second temperature control unit is used to adjust the temperature of the liquid collection chamber 211 and the forming chamber 2211.

[0025] It should be noted that the feed tube 1 is made of platinum. Platinum possesses excellent high-temperature resistance (withstanding temperatures above 1500℃ required for molten glass), chemical inertness (it does not react chemically with the molten glass, avoiding contamination of the glass melt), and good thermal conductivity. This ensures both long-term stable operation of the flow channel under high-temperature conditions and the purity of the molten glass, meeting the stringent requirements for raw material purity in flexible ultra-thin glass. The thickness of feed tube 1 is generally selected as 0.8-1.5mm.

[0026] The forming device 2 is also made of platinum. Because the forming device 2 needs to be in contact with high-temperature molten glass for extended periods and withstand certain mechanical stress, platinum prevents the device from deforming or being corroded by the molten glass at high temperatures. Furthermore, its uniform thermal conductivity provides a foundation for precise temperature control of the subsequent liquid collection chamber 211 and forming chamber 2211. The thickness of the forming device 2 is generally selected as 1.8-2.2 mm.

[0027] The collecting chamber 211 is a hollow structure located at the top of the forming device 2. Its cross-sectional area is larger than that of the flow channel and gradually increases from top to bottom. The cavity wall has a smoothly transitioning arc or conical design. The core function of the collecting chamber 211 is to receive the molten glass flowing in from the flow channel. By expanding the capacity, it temporarily stores and buffers the molten glass, preventing flow turbulence caused by excessive flow velocity or impact when the molten glass directly enters the forming chamber 2211. At the same time, it allows the molten glass to be fully mixed in the collecting chamber 211, balancing the liquid level and eliminating viscosity unevenness that may be caused by slight temperature differences in the flow channel. This provides a stable and uniform material flow basis for the molten glass that subsequently enters the forming chamber 2211. The forming cavity 2211 is a hollow structure located below the liquid collection cavity 211 inside the forming device 2. Its cross-sectional area is generally the same as or slightly larger than the size of the finished glass product. The spatial dimensions (such as height and cross-sectional shrinkage rate) of the forming cavity 2211 need to match the width of the discharge slit 2221 and the downward traction speed, so that the molten glass can gradually adapt to the transition from "free flow" to "directional forming" in the forming cavity 2211, avoiding stress concentration inside the molten glass due to sudden spatial changes. The stable molten glass finally flows into the forming area through the discharge slit under the action of gravity. After cooling annealing and the assistance of traction rollers, the forming process produces a qualified ultra-thin flexible glass sheet.

[0028] The temperature control device can be used in conjunction with a heating flange for temperature control.

[0029] The glass production equipment 1000 provided by this invention solves the problems of unstable glass melt flow and substandard forming accuracy caused by temperature fluctuations in the slit-pull method by using a flow monitoring device and a temperature control device to control the temperature of the feed pipe 1 and the forming device 2 in a closed loop. Specifically, the flow monitoring device detects the glass melt flow rate in the flow channel in real time and outputs a flow signal; after receiving the flow signal, the first temperature control unit immediately calculates the temperature correction amount according to the set value and dynamically adjusts the heating / cooling power of the flow channel to keep the glass melt viscosity in the target range, thereby stabilizing the flow rate. The second temperature control unit independently controls the temperature of the collecting chamber 211 and the forming chamber 2211 to ensure that the glass melt has a consistent temperature and viscosity along the pull path, avoiding sudden changes in flow rate caused by local overcooling or overheating. In this way, with the synergistic effect of the above-mentioned multi-stage temperature control and flow feedback, this invention achieves high-precision and stable control of the glass melt flow rate, significantly improving the thickness uniformity and surface quality of flexible ultra-thin glass and reducing the scrap rate.

[0030] Please see Figure 1 and Figure 2 In one embodiment, the feed pipe 1 includes a feed platinum pipe 11, a flow control platinum pipe 12, and a discharge platinum pipe 13 connected in sequence. The feed platinum pipe 11 has a feed chamber inside, and the feed end of the feed chamber is connected to the discharge end of the feeding device. The flow control platinum pipe 12 has a flow control chamber inside, and the feed end of the flow control chamber is connected to the discharge end of the feed chamber. The discharge platinum pipe 13 has a discharge chamber inside, and the feed end of the discharge chamber is connected to the discharge end of the flow control chamber. The discharge end of the discharge chamber is connected to the liquid collection chamber 211. The feed chamber, the flow control chamber, and the discharge chamber together constitute a flow channel.

[0031] It should be noted that the feed platinum tube 11, as the initial receiving unit for molten glass entering the equipment, plays a crucial role in stably receiving the molten glass from the feeding equipment and providing a uniform initial flow for subsequent flow control. Structurally, the cross-sectional area of ​​the feed chamber formed inside is typically larger than the diameter of the outlet end of the feeding equipment, and the chamber wall adopts a smooth, rounded transition design to avoid turbulence or eddies caused by excessive flow velocity and impact on the chamber wall when the molten glass flows in from the feeding equipment. Simultaneously, by expanding the containment space, it provides initial buffering of the molten glass, reducing the direct impact of fluctuations in the supply equipment's output on subsequent processes. Furthermore, the feed platinum tube 11 can be made of platinum-rhodium alloy, and its length must be adapted to the distance from the feeding equipment to the flow control platinum tube 12. Its inner diameter is 63-65mm, matching the end diameter of the feeding equipment. After butt welding, they are joined together to enhance structural stability and high-temperature resistance, preventing deformation caused by thermal stress after long-term use.

[0032] Because the feeding section is vertically downward, it is difficult to control the flow rate directly in the feeding equipment, and the flow rate is prone to getting out of control. Therefore, the flow control platinum tube 12 is the core unit for achieving precise flow control in the entire feed tube 1. The cross-sectional area of ​​its internal flow control cavity is generally designed as a constant diameter structure according to the flow control requirements, so as to be suitable for scenarios that need to maintain a stable basic flow rate. Moreover, the roughness of the inner wall of the flow control cavity must be strictly controlled to ensure that the glass melt does not stick to the wall when flowing in the cavity, and to avoid flow fluctuations or impurity residues caused by local wall adhesion. Meanwhile, the sensors of the flow monitoring device (such as electromagnetic flow sensors and ultrasonic flow sensors) are directly installed in the flow control cavity, which can collect the instantaneous flow data of the molten glass in real time. The heating element of the first temperature control unit (such as a platinum heating wire) is closely attached to the outer wall of the flow control platinum tube 12, which can quickly adjust the heating power according to the flow signal. By changing the viscosity of the molten glass, the flow rate can be accurately corrected. For example, when the flow monitoring device detects that the flow rate is lower than the set value, the first temperature control unit can immediately increase the temperature of the flow control platinum tube 12 to reduce the viscosity of the molten glass and increase the flow rate. Conversely, it can decrease the temperature to form a closed-loop control of "monitoring-feedback-regulation". In addition, the length of the flow control platinum tube 12 is generally set at 1000-1500mm, and the inner diameter is 63-70mm. The outlet inner diameter of the feed platinum tube 11 is usually matched with the inner diameter of the flow control platinum tube 12. After concentric docking, they are welded into a whole.

[0033] The discharge platinum tube 13 serves as a "transitional conveying unit" connecting the flow-controlling platinum tube 12 and the liquid collection chamber 211 of the forming device 2. Its core function is to smoothly convey the stabilized molten glass after flow control to the liquid collection chamber 211, avoiding secondary fluctuations in flow rate due to changes in the flow channel during the conveying process. Its internal discharge chamber can adopt a gradient structure design. The cross-sectional area of ​​its inlet end is consistent with that of the flow-controlling chamber, ensuring no sudden changes in flow velocity when the molten glass flows in. The cross-sectional area of ​​the discharge end gradually expands along the flow direction (e.g., 15%-25% larger than the inlet end) and matches the inlet diameter of the liquid collection chamber 211. This design reduces the impact velocity of the molten glass flowing into the liquid collection chamber 211 by gradually expanding the flow space, avoiding splashing or flow turbulence caused by high-speed impact on the bottom of the liquid collection chamber 211. Of course, the discharge platinum tube 13 can be formed by connecting the first platinum tube segment 131 and the second platinum tube segment 132. The first platinum tube segment 131 is connected to the flow control cavity, and the second platinum tube segment 132 is connected to the liquid collection cavity 211. The diameter of the second platinum tube segment 132 is larger than the diameter of the first platinum tube segment. When connecting, the first platinum tube segment 131 is inserted into the second platinum tube segment 132.

[0034] In this embodiment, the feed platinum tube 11, the flow control platinum tube 12, and the discharge platinum tube 13, through segmented functional division and structural adaptation design, together form a complete flow channel that takes into account stable reception, precise flow control, and continuous conveying. This not only makes flow regulation more targeted, but also provides structural guarantee for the stable transmission of molten glass from the feeding equipment to the forming device 2 throughout the entire process. In one embodiment, the length of the feed platinum tube is less than the length of the flow control platinum tube.

[0035] In this embodiment, the length of the feed platinum tube 11 is set as A, which needs to be adapted to the distance from the feeding equipment to the flow control platinum tube 12 to meet the requirement of short-path rapid connection and avoid premature heat dissipation of the molten glass during transportation due to an excessively long path. The length of the flow control platinum tube 12 is set as B, and B > A. Thus, on the one hand, the longer tube provides more installation and monitoring space for the sensors of the flow monitoring device (such as electromagnetic flow sensors and ultrasonic flow sensors), ensuring that the sensors can collect flow data of the molten glass in a stable flow state, avoiding monitoring before the molten glass has stabilized due to an excessively short tube, which would affect the accuracy of the data; on the other hand, the longer flow control platinum tube 12 can provide a certain resistance to the flow direction of the molten glass and allow the heating element (such as platinum heating wire) of the first temperature control unit to fully contact the tube, so that the heating / cooling effect can be evenly and fully transferred to the molten glass in the tube, avoiding uneven temperature control due to an excessively short tube, which would affect the flow correction effect.

[0036] Please continue reading. Figure 1 and Figure 2 In one embodiment, the feed platinum tube 11 and the discharge platinum tube 13 both extend in a vertical direction, while the flow control platinum tube 12 extends in a horizontal direction.

[0037] In this embodiment, since molten glass typically flows naturally from top to bottom under its own gravity to reduce the need for additional conveying power, the feed platinum tube 11 extends vertically to accommodate the layout where the feeding equipment is usually located at the top. Furthermore, a 90° bend can be provided at the outlet of the feed platinum tube 11 to change the flow direction of the molten glass from vertical to horizontal, and then flow into the flow control platinum tube 12. This ensures that the flow channel does not contract sharply or turn when the molten glass changes from vertical to horizontal, avoiding local eddies or sudden changes in flow velocity caused by the change. At the same time, the fluid impact force during the change is dispersed by a reasonable bending radius, reducing local wear of the tube wall by the molten glass and ensuring long-term stability.

[0038] The flow control platinum tube 12 extends horizontally. On the one hand, this avoids uneven flow velocity caused by gravity in the vertical direction, ensuring more accurate data collected by the flow monitoring device (e.g., the sensor can be installed at the horizontal centerline of the tube to avoid monitoring errors caused by differences in flow velocity between the upper and lower parts). On the other hand, the horizontal extension structure facilitates the uniform winding of the heating element (such as the platinum heating wire) of the first temperature control unit along the tube, so that the heating / cooling effect can be uniformly transmitted to the glass melt in the tube in the horizontal direction, further improving the uniformity of temperature control.

[0039] The discharge platinum tube 13 extends vertically and can be adapted to the layout of the liquid collection chamber 211 of the forming device 2, which is usually located below the flow control platinum tube 12. This allows the liquid glass to achieve a flow conversion from horizontal to vertical again by relying on its own gravity, ensuring that the liquid glass enters the liquid collection chamber 211 in a stable "top-down" flow direction, thus matching the receiving and buffering function of the liquid collection chamber 211.

[0040] In one embodiment, the flow-controlling platinum tube 12 is a corrugated platinum tube.

[0041] In this embodiment, the flow-controlling platinum tube 12 is designed in a corrugated shape, which not only increases the creep resistance of the flow-controlling platinum tube 12, but also provides a certain deformation allowance in the horizontal direction to prevent the tube from being stretched and deformed due to the expansion of platinum during the heating process. The corrugation size of the corrugated platinum tube is preferably set to about 5mm.

[0042] Please see Figure 1 In one embodiment, the feed pipe 1 further includes a first flange 14, a second flange 15, a third flange 16, and a fourth flange 17. The first flange 14 is disposed on the feed platinum pipe 11 and near the feed end of the feed chamber; the second flange 15 is disposed on the flow control platinum pipe 12 and near the discharge end of the feed chamber; the third flange 16 is disposed on the discharge platinum pipe 13 and near the discharge end of the flow control chamber; and the fourth flange 17 is disposed on the discharge platinum pipe 13 and near the discharge end of the discharge chamber. The first flange 14, the second flange 15, and the feed platinum pipe 11 constitute a first heating circuit; the second flange 15, the third flange 16, and the flow control platinum pipe 12 constitute a second heating circuit; and the third flange 16, the fourth flange 17, and the discharge platinum pipe 13 constitute a third heating circuit. The first temperature control unit includes a first temperature controller, a second temperature controller, and a third temperature controller. The first temperature controller is electrically connected to a first flange 14 and a second flange 15 to change the current power flowing through the first heating circuit. The second temperature controller is electrically connected to a second flange 15 and a third flange 16 to change the current power flowing through the second heating circuit. The third temperature controller is electrically connected to a third flange 16 and a fourth flange 17 to change the current power flowing through the third heating circuit.

[0043] Traditional feed pipes often use a single heating unit to control the overall temperature, which can easily lead to local temperature deviations due to the different functions of each section of the flow channel (receiving, flow control, and conveying), thus causing fluctuations in the viscosity of the molten glass. In this embodiment, the first heating circuit, the second heating circuit, and the third heating circuit are respectively set for the feed platinum pipe 11, the flow control platinum pipe 12, and the discharge platinum pipe 13. This allows the first heating circuit to focus on controlling the temperature of the feed chamber, ensuring that the initial temperature of the molten glass flowing in from the feeding equipment is stable and avoiding the impact of initial temperature fluctuations on subsequent flow control. The second heating circuit focuses on the temperature of the flow control chamber and, as the core temperature control unit for flow regulation, can form a more precise closed-loop control with the flow monitoring device. The third heating circuit targets the temperature of the discharge chamber, ensuring that the temperature of the molten glass before it is delivered to the collection chamber 211 matches the preset temperature of the collection chamber 211. Meanwhile, the first to third temperature controllers can achieve precise temperature control of each segment by independently adjusting the current power of the corresponding circuit. For example, the feed platinum tube 11 needs to maintain a high temperature of 1550℃-1600℃ to receive the glass melt from the feeding equipment, the flow control platinum tube 12 needs to be dynamically fine-tuned in the range of 1520℃-1550℃ (to adapt to flow correction), and the discharge platinum tube 13 needs to be stabilized at 1500℃-1520℃ to match the temperature of the liquid collection chamber 211. The temperature difference between the three can be precisely controlled within ±2℃ by independent temperature controllers, completely eliminating the temperature gradient problem of "paying attention to one thing but not another" under traditional overall temperature control, and laying the foundation for the viscosity stability of the entire flow channel of the glass melt.

[0044] It should be noted that the first flange 14, the second flange 15, the third flange 16, and the fourth flange 17 are not only the electrode connection carriers of the heating circuit, but also play a role in strengthening the connection stability of the platinum tubes. The first flange 14 is close to the feed end of the feed platinum tube 11, which can enhance the connection sealing between it and the feeding equipment and prevent leakage of high-temperature molten glass. The second flange 15 connects the feed platinum tube 11 and the flow control platinum tube 12, the third flange 16 connects the flow control platinum tube 12 and the discharge platinum tube 13, and the fourth flange 17 enhances the connection strength between the discharge platinum tube 13 and the forming device 2. Compared with the traditional direct welding connection method of platinum tubes, the detachability of the flange connection makes equipment maintenance easier (such as replacing a section of platinum tube without disassembling the whole thing). At the same time, as the electrode of the heating circuit, the flange is made of platinum-rhodium alloy, which has excellent conductivity and high-temperature oxidation resistance, which can ensure stable current transmission in the heating circuit and avoid problems such as increased contact resistance and decreased heating efficiency caused by electrode oxidation, thereby reducing equipment maintenance costs and downtime losses.

[0045] A thermostat is an automatic control device used to monitor and regulate temperature. Its core function is to maintain the temperature of the environment or equipment near a set value, preventing overheating or overcooling. Thermostats can be electromechanical, using a bimetallic strip to sense temperature and controlling a relay via contact switching to control the temperature of the heating circuit; they can also be ordinary electronic, using a temperature sensor and a controllable relay to continuously adjust the current; and they can be intelligent digital display types, employing high-precision sensors and smart chips for precise power regulation, temperature display, and alarm functions. Regardless of the type, a thermostat must be able to independently connect to the heating circuit of its corresponding flange, ensuring that the current and power of each circuit can be controlled individually.

[0046] Please see Figure 1 , Figure 2 as well as Figure 3 In one embodiment, the molding device 2 includes a first platinum container 21 and a second platinum container 22 disposed at the bottom of the first platinum container 21. The first platinum container 21 has a liquid collection cavity 211 inside; the second platinum container 22 has a molding cavity 2211, and a discharge slit 2221 is opened on the side of the second platinum container 22 away from the first platinum container 21.

[0047] It should be noted that the first platinum container 21, as the upper core component of the forming device 2, has a liquid collection chamber 211 inside that serves as a transitional buffer space for receiving the glass melt from the feed pipe 1 (outlet platinum pipe 13). The overall shape of the first platinum container 21 is an inverted conical or arc-shaped cavity structure with an open top and a narrowed bottom. The diameter of the upper opening is matched with the diameter of the outlet port of the outlet platinum pipe 13, ensuring that there is no risk of overflow when the glass melt flows vertically into the outlet platinum pipe 13.

[0048] The second platinum container 22 serves as the lower core component of the forming device 2. The forming cavity 2211 formed inside it, together with the discharge slit 2221 at the bottom, constitutes a directional forming channel for the molten glass. The forming cavity 2211 of the second platinum container 22 has a long, elongated cavity structure that runs vertically through the body. The cross-sectional area at the upper end where it connects with the first platinum container 21 is the same as the lower end of the liquid collection cavity 211, while the cross-sectional area at the lower end near the discharge slit 2221 is reduced to a size that matches the width of the slit.

[0049] In this embodiment, the collection chamber 211 of the first platinum container 21 first buffers and homogenizes the molten glass, providing a smooth and uniform flow to the second platinum container 22. The forming chamber 2211 of the second platinum container 22 then guides the flow of the molten glass through a gradual narrowing, and finally completes the thickness shaping through the discharge slit 2221. At the same time, with the independent temperature control of the second temperature control unit, it is ensured that the molten glass always maintains a state of "fluidity suitability and viscosity stability" throughout the entire forming device 2, avoiding forming defects caused by excessive temperature gradient.

[0050] Please see Figure 3 Because the discharge slit 2221 of the traditional platinum container is integrally formed with the cavity, and the discharge slit 2221 is the final shaping structure of the glass melt forming, it is in a high temperature and high stress environment for a long time. It is prone to wear, deformation or blockage due to the scouring of the glass melt. At this time, the entire second platinum container 22 needs to be replaced. Not only is the cost of a single container high, but disassembly, replacement and readjustment are also complicated, which seriously affects the continuity of production.

[0051] To solve the above problems, in one embodiment, the second platinum container 22 includes a container body 221 and a bottom plate 222. The container body 221 has a molding cavity 2211 inside. The bottom plate 222 is located at one end of the container body 221 away from the first platinum container 21 and is detachably connected to the container body 221. The bottom plate 222 has a discharge slit 2221.

[0052] In this embodiment, the discharge slit 2221 is independently set on the detachable base plate 222. When the slit has a problem, there is no need to replace the entire container. Only the connecting bolts need to be removed, the old base plate 222 needs to be taken off, the pre-processed new base plate 222 needs to be replaced and tightened again. The whole maintenance process is short and the downtime is short. At the same time, the cost of a single maintenance is reduced, which significantly reduces equipment operation and maintenance expenses and production losses.

[0053] It should be noted that the length and width of the base plate 222 are consistent with those of the container body 221, and the thickness is 8-12mm. The discharge slit 2221 is generally designed to be 9-11mm thick according to the temperature control of the molten glass. The outer perimeter of the discharge slit 2221 can be insulated with special refractory materials. After being fixed with heat-resistant steel, it is joined and fitted together with the bottom of the second platinum container 22 and locked with fixing bolts.

[0054] Please see Figure 2 and Figure 3 In one embodiment, the outer wall of the first platinum container 21 is provided with a pressure stabilizing hole 212 that communicates with the liquid collection chamber 211.

[0055] In this embodiment, the portion above the pressure stabilizing hole 212 forms a certain suspended area 213. The pressure stabilizing hole 212 can be connected to the outside (or the equipment's preset pressure stabilizing gas path) in real time, allowing the molten glass to flow smoothly. When the pressure in the liquid collecting chamber 211 increases, excess gas in the chamber is discharged through the pressure stabilizing hole 212, and the pressure quickly drops back to the preset value (usually a slight positive pressure to ensure that outside air does not enter). When the pressure decreases, external pressure stabilizing gas can be replenished through the pressure stabilizing hole 212 to maintain stable pressure in the chamber. Through this dynamic balancing effect, the pressure fluctuation in the liquid collecting chamber 211 can be controlled, reducing the amplitude of molten glass fluctuations. This provides a prerequisite for stable feeding into the subsequent forming chamber 2211 and significantly reduces the risk of uneven glass thickness.

[0056] In one embodiment, the first platinum container 21 has a triangular cross-sectional shape, the small end of the first platinum container 21 is provided with a feed end, and the large end of the first platinum container 21 is connected to the second platinum container 22.

[0057] In a preferred embodiment, the cross-sectional area of ​​the first platinum container 21 is an isosceles right triangle with a base side length of 750-800mm and a base width of 45-55mm.

[0058] In one embodiment, the cross-sectional shape of the second platinum container 22 is rectangular.

[0059] In a preferred embodiment, the second platinum container 22 has a height greater than 100 mm, and its width, length, and thickness are the same as the bottom of the first platinum container 21.

[0060] Please see Figure 1 and Figure 3 In one embodiment, the molding apparatus 2 further includes a fifth flange 23, a sixth flange 24, and a seventh flange 25. The fifth flange 23 is disposed on the first platinum container 21 and near the inlet end of the liquid collection chamber 211; the sixth flange 24 is disposed on the second platinum container 22 and near the outlet end of the liquid collection chamber 211; and the seventh flange 25 is disposed on the second platinum container 22 and near the outlet end of the molding chamber 2211. The fifth flange 23, the sixth flange 24, and the first platinum container 21 constitute a fourth heating circuit; the sixth flange 24, the seventh flange 25, and the second platinum container 22 constitute a fifth heating circuit. The second temperature control unit includes a fourth temperature controller and a fifth temperature controller. The fourth temperature controller is electrically connected to the fifth flange 23 and the sixth flange 24 to change the current power flowing through the fourth heating circuit. The fifth temperature controller is electrically connected to the sixth flange 24 and the seventh flange 25 to change the current power flowing through the fifth heating circuit.

[0061] Traditional forming devices often use a single heating unit to control the overall temperature. Because the liquid collecting chamber 211 and the forming chamber 2211 have different functions (the liquid collecting chamber 211 needs to buffer and homogenize, while the forming chamber 2211 needs to orient and shape), the required temperatures are different. Overall temperature control is prone to imbalance. That is, if the temperature of the liquid collecting chamber 211 is met, the temperature of the forming chamber 2211 may be too high, making the glass liquid too fluid and difficult to control the shape. If the temperature of the forming chamber 2211 is matched, the temperature of the liquid collecting chamber 211 may be too low, which will cause the viscosity of the glass liquid to increase and affect the homogenization effect. In this embodiment, the fourth heating circuit focuses on controlling the temperature of the liquid collecting chamber 211. The fourth temperature controller can precisely control the temperature of the liquid collecting chamber 211 by changing the circuit current power. The fifth heating circuit focuses on the temperature of the forming chamber 2211, and the fifth temperature controller similarly achieves precise control of the temperature of the forming chamber 2211. The two operate independently to avoid mutual interference in temperature regulation. For example, when it is necessary to increase the temperature of the liquid collecting chamber 211 to enhance the homogenization effect of the glass melt, there is no need to worry about the temperature of the forming chamber 2211 rising accordingly, and vice versa. This ensures that the liquid collecting chamber 211 and the forming chamber 2211 always maintain the optimal temperature range, laying the foundation for the quality of glass forming.

[0062] This utility model also provides a glass production line, which includes a glass production equipment 1000. The specific structure of the glass production equipment 1000 is as described in the above embodiments. Since this glass production line adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0063] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A glass production equipment, characterized in that, include: The feed pipe has a flow channel inside, and the feed end of the flow channel is connected to the discharge end of the feeding device; A molding device, wherein the interior of the molding device has a liquid collection chamber and a molding chamber that are connected sequentially in the vertical direction, the top of the molding device is provided with a feed end that communicates with the flow channel, and the bottom of the molding device is provided with a discharge slit that communicates with the molding chamber. A flow monitoring device is provided inside the flow channel to detect the flow rate inside the flow channel in real time and output a flow rate signal. as well as A temperature control device, comprising a first temperature control unit and a second temperature control unit, wherein the first temperature control unit is electrically connected to the flow detection device and is used to receive the flow signal and adjust the temperature of the flow channel according to the flow signal; and the second temperature control unit is used to adjust the temperature of the liquid collection chamber and the molding chamber.

2. The glass production equipment as described in claim 1, characterized in that, The feed pipe includes a feed platinum pipe, a flow control platinum pipe, and a discharge platinum pipe connected in sequence. The feed platinum pipe has a feed chamber inside, and the feed end of the feed chamber is connected to the discharge end of the feeding device. The flow control platinum pipe has a flow control chamber inside, and the feed end of the flow control chamber is connected to the discharge end of the feed chamber. The discharge platinum pipe has a discharge chamber inside, and the feed end of the discharge chamber is connected to the discharge end of the flow control chamber. The discharge end of the discharge chamber is connected to the liquid collection chamber. The feed chamber, the flow control chamber, and the discharge chamber together constitute the flow channel.

3. The glass production equipment as described in claim 2, characterized in that, The length of the feed platinum tube is less than the length of the flow control platinum tube.

4. The glass production equipment as described in claim 2, characterized in that, Both the feed platinum tube and the discharge platinum tube extend vertically, while the flow control platinum tube extends horizontally; and / or The flow-controlling platinum tube is a corrugated platinum tube.

5. The glass production equipment as described in any one of claims 2 to 4, characterized in that, The feed pipe further includes a first flange, a second flange, a third flange, and a fourth flange. The first flange is disposed on the feed platinum pipe and near the feed end of the feed chamber; the second flange is disposed on the flow control platinum pipe and near the discharge end of the feed chamber; the third flange is disposed on the discharge platinum pipe and near the discharge end of the flow control chamber; and the fourth flange is disposed on the discharge platinum pipe and near the discharge end of the discharge chamber. The first flange, the second flange, and the feed platinum pipe constitute a first heating circuit; the second flange, the third flange, and the flow control platinum pipe constitute a second heating circuit; and the third flange, the fourth flange, and the discharge platinum pipe constitute a third heating circuit. The first temperature control unit includes a first temperature controller, a second temperature controller, and a third temperature controller. The first temperature controller is electrically connected to the first flange and the second flange to change the current power flowing through the first heating circuit. The second temperature controller is electrically connected to the second flange and the third flange to change the current power flowing through the second heating circuit. The third temperature controller is electrically connected to the third flange and the fourth flange to change the current power flowing through the third heating circuit.

6. The glass production equipment as described in claim 1, characterized in that, The forming device includes a first platinum container and a second platinum container disposed at the bottom of the first platinum container. The first platinum container has the liquid collection cavity formed inside it. The second platinum container has the forming cavity formed inside it. The discharge slit is opened on the side of the second platinum container opposite to the first platinum container.

7. The glass production equipment as described in claim 6, characterized in that, The second platinum container includes a container body and a base plate. The forming cavity is formed inside the container body. The base plate is located at the end of the container body opposite to the first platinum container and is detachably connected to the container body. The base plate has the discharge slit at the beginning; and / or The outer wall of the first platinum container has a pressure stabilizing hole that connects to the liquid collection chamber.

8. The glass production equipment as described in claim 6, characterized in that, The first platinum container has a triangular cross-sectional shape, with the feed end located at its smaller end, and the larger end connected to the second platinum container; and / or The second platinum container has a rectangular cross-sectional shape.

9. The glass production equipment as described in any one of claims 6 to 8, characterized in that, The molding apparatus further includes a fifth flange, a sixth flange, and a seventh flange. The fifth flange is disposed at the inlet end of the first platinum container near the liquid collection chamber; the sixth flange is disposed at the outlet end of the second platinum container near the liquid collection chamber; and the seventh flange is disposed at the outlet end of the second platinum container near the molding chamber. The fifth flange, the sixth flange, and the first platinum container constitute the fourth heating circuit; the sixth flange, the seventh flange, and the second platinum container constitute the fifth heating circuit. The second temperature control unit includes a fourth temperature controller and a fifth temperature controller. The fourth temperature controller is electrically connected to the fifth flange and the sixth flange to change the current power flowing through the fourth heating circuit. The fifth temperature controller is electrically connected to the sixth flange and the seventh flange to change the current power flowing through the fifth heating circuit.

10. A glass production line, characterized in that, Includes glass production equipment as described in any one of claims 1 to 9.

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