Discharging mechanism and glass-ceramic production device

Abstract

The embodiments of the present application relate to the technical field of glass production. Disclosed are a discharging mechanism and a glass-ceramic production device. The discharging mechanism comprises a discharging hopper, a first heating member and a second heating member. The discharging hopper comprises a receiving section, a buffer section, a homogenizing section and a discharging nozzle, which are arranged in sequence in a discharging direction, wherein the material receiving section has a greater volume than the homogenizing section, the buffer section is configured to be in a neck shape, a larger end of the buffer section is connected to the receiving section, a smaller end of the buffer section is connected to the homogenizing section, the homogenizing section is connected to the discharging nozzle, the first heating member is connected to the receiving section, the second heating member is connected to the homogenizing section, and the first heating member has a lower heating power than the second heating member. Compared with the prior art, the discharging mechanism provided in the embodiments of the present application can perform buffering and segmented precise temperature control on a glass melt, thereby effectively improving the flow uniformity and temperature distribution uniformity of the glass melt, and ensuring the product quality.

Description

A material discharge mechanism and a microcrystalline glass production apparatus

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411863172.1, filed on December 17, 2024, entitled “A material discharge mechanism and a microcrystalline glass production apparatus”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of glass production technology, and more specifically, to a material discharge mechanism and a microcrystalline glass production apparatus. Background Technology

[0004] Currently, in the production process of microcrystalline glass, the glass melt is generally conveyed to the calendering rollers by overflowing and pulling it down through a hopper, thus achieving the calendering and forming of the glass melt. However, the current hopper structure is simple and has a cylindrical design. The glass melt entering the hopper later exerts greater pressure on the glass melt entering the hopper earlier, resulting in a large difference in the flow velocity distribution of the glass melt within the hopper. This leads to poor flow uniformity of the glass melt. Furthermore, the current hopper undergoes uniform heating treatment, which causes the temperature of the glass melt entering the hopper later to be higher than that of the glass melt entering the hopper earlier (because the glass melt entering the hopper earlier has a longer heat dissipation time; although its heating time is also longer, the heat dissipation per unit time is greater than the heating amount, so the temperature of the glass melt entering the hopper earlier is lower). This results in uneven temperature distribution of the glass melt within the hopper, directly affecting product quality.

[0005] In view of this, designing and manufacturing a discharge mechanism with uniform flow and temperature distribution, as well as a microcrystalline glass production device, is particularly important, especially in glass production.

[0006] Application content

[0007] The purpose of this application is to provide a discharge mechanism that can buffer and precisely control the temperature of the glass melt in segments, effectively improving the uniformity of the glass melt's flow and temperature distribution, and ensuring product quality.

[0008] Another objective of this application is to provide a microcrystalline glass production apparatus that can buffer and perform segmented precise temperature control on the glass melt, effectively improving the flow uniformity and temperature distribution uniformity of the glass melt, and ensuring product quality.

[0009] This application is implemented using the following technical solution.

[0010] A discharge mechanism includes a discharge hopper, a first heating element, and a second heating element. The discharge hopper includes a receiving section, a buffer section, a leveling section, and a discharge nozzle arranged sequentially along the discharge direction. The volume of the receiving section is larger than the volume of the leveling section. The buffer section is constricted. The large end of the buffer section is connected to the receiving section, and the small end of the buffer section is connected to the leveling section. The leveling section is connected to the discharge nozzle. The first heating element is connected to the receiving section, and the second heating element is connected to the leveling section. The heating power of the first heating element is less than the heating power of the second heating element.

[0011] Optionally, the ratio of the volume of the receiving section to the volume of the uniform material section is 1.5-2.

[0012] Optionally, the heating power of the first heating element is greater than half the heating power of the second heating element.

[0013] Optionally, both the receiving section and the leveling section are rectangular frames. The receiving section includes a first side wall, a first end wall, a second side wall, and a second end wall connected end to end. The leveling section includes a third side wall, a third end wall, a fourth side wall, and a fourth end wall connected end to end. The distance between the first side wall and the second side wall is greater than the distance between the third side wall and the fourth side wall. The first end wall and the third end wall are located on the same plane, and the second end wall and the fourth end wall are located on the same plane.

[0014] Optionally, the first sidewall, the first endwall, the second sidewall, and the second endwall are all perpendicular to the horizontal plane, and the third sidewall, the third endwall, the fourth sidewall, and the fourth endwall are all perpendicular to the horizontal plane.

[0015] Optionally, the buffer section includes a first buffer wall, a fifth end wall, a second buffer wall, and a sixth end wall connected end to end. One end of the first buffer wall is connected to the first side wall, and the other end is connected to the third side wall. One end of the second buffer wall is connected to the second side wall, and the other end is connected to the fourth side wall. The fifth end wall and the first end wall are located on the same plane, and the sixth end wall and the second end wall are located on the same plane.

[0016] Optionally, both the first buffer wall and the second buffer wall are arc-shaped, and the arc-shaped openings of the first buffer wall and the second buffer wall are both oriented outward from the buffer section.

[0017] Optionally, the central angles corresponding to the arcs formed by the first and second buffer walls are the same, and both are between 30 and 50 degrees.

[0018] Optionally, the discharge hopper also includes a diversion section, which is arranged in a constricted shape. The large end of the diversion section is connected to the uniform material section, and the small end of the diversion section is connected to the discharge nozzle, which is located in the middle of the uniform material section in the width direction.

[0019] Optionally, the discharge hopper also includes a top cover, which is placed on and connected to the receiving section, and the top cover has a feed inlet.

[0020] Optionally, the outer wall of the discharge hopper is densely covered with multiple hooks, which are configured to attach insulation cotton.

[0021] Optionally, the discharge mechanism also includes a level gauge installed in the discharge hopper, the level gauge being configured to detect the liquid level height of the molten glass in the discharge hopper.

[0022] Optionally, the discharge mechanism also includes a temperature sensor installed in the discharge hopper, the temperature sensor being configured to detect the temperature of the molten glass inside the discharge hopper.

[0023] A microcrystalline glass production apparatus includes the aforementioned discharge mechanism, which comprises a discharge hopper, a first heating element, and a second heating element. The discharge hopper includes a receiving section, a buffer section, a leveling section, and a discharge nozzle arranged sequentially along the discharge direction. The volume of the receiving section is greater than the volume of the leveling section. The buffer section is constricted. The larger end of the buffer section is connected to the receiving section, and the smaller end of the buffer section is connected to the leveling section. The leveling section is connected to the discharge nozzle. The first heating element is connected to the receiving section, and the second heating element is connected to the leveling section. The heating power of the first heating element is less than the heating power of the second heating element.

[0024] The discharge mechanism and microcrystalline glass production apparatus provided in this application have the following beneficial effects:

[0025] The discharge mechanism provided in this application includes a discharge hopper comprising a receiving section, a buffer section, a leveling section, and a discharge nozzle arranged sequentially along the discharge direction. The volume of the receiving section is larger than that of the leveling section. The buffer section is constricted, with its large end connected to the receiving section and its small end connected to the leveling section. The leveling section is connected to the discharge nozzle. A first heating element is connected to the receiving section, and a second heating element is connected to the leveling section. The heating power of the first heating element is less than that of the second heating element. Compared with the prior art, the discharge mechanism provided in this application, due to the use of a buffer section located between the receiving section and the leveling section, and a first heating element and a second heating element connected to the receiving section and the leveling section respectively, can buffer and precisely control the temperature of the glass melt in segments, effectively improving the flow uniformity and temperature distribution uniformity of the glass melt and ensuring product quality.

[0026] The microcrystalline glass production apparatus provided in this application includes a discharge mechanism that can buffer and precisely control the temperature of the glass melt in segments, effectively improving the uniformity of the glass melt's flow and temperature distribution, and ensuring product quality. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 is a schematic diagram of the microcrystalline glass production apparatus provided in an embodiment of this application;

[0029] Figure 2 is a structural schematic diagram of the discharge mechanism provided in the embodiment of this application from a first-view perspective;

[0030] Figure 3 is a schematic diagram of the discharge mechanism provided in the embodiment of this application from a second perspective.

[0031] Figure 4 is a structural schematic diagram of the discharge mechanism provided in the embodiment of this application from a third perspective.

[0032] Icons: 10-Microcrystalline glass production device; 100-Discharge mechanism; 110-Discharge hopper; 111-Receiving section; 1111-First sidewall; 1112-First endwall; 1113-Second sidewall; 112-Buffer section; 1121-First buffer wall; 1122-Fifth endwall; 1123-Second buffer wall; 113-Equalizing section; 1131-Third sidewall; 1132-Third endwall; 1133-... Four side walls; 114-Discharge nozzle; 115-Draw-out section; 120-First heating element; 121-First heating section; 122-Second heating section; 130-Second heating element; 140-Top cover; 141-Inlet; 150-Hook; 160-Level gauge; 170-Flow regulating clamp; 180-Temperature sensor; 200-Feed pipe; 300-Caulking rollers; 310-Roller gap; 400-Glass melt. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this application, it should be noted that the terms "inner," "outer," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," "third," etc., are only configured to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, features in the following embodiments can be combined with each other.

[0039] Referring to Figure 1, this application embodiment provides a microcrystalline glass production apparatus 10, configured to produce microcrystalline glass. It can buffer and precisely control the temperature of the glass melt 400 in segments, effectively improving the flow uniformity and temperature distribution uniformity of the glass melt 400, and ensuring product quality.

[0040] The microcrystalline glass production apparatus 10 includes a feed pipe 200, a discharge mechanism 100, and a calendering roller 300. The feed pipe 200 is configured to feed the molten glass 400 into the discharge mechanism 100, and the discharge mechanism 100 is configured to feed the molten glass 400 into the calendering roller 300 in a waterfall-like manner to form a pool of material within the gap 310 between the rollers of the calendering roller 300. The calendering roller 300 is configured to extrude and cool the molten glass 400 to form microcrystalline glass.

[0041] Referring to Figures 2 to 4, the discharge mechanism 100 includes a discharge hopper 110, a first heating element 120, and a second heating element 130. A feed pipe 200 is connected to the discharge hopper 110 and is configured to feed molten glass 400 into the discharge hopper 110. The discharge hopper 110 is positioned above the rolling rollers 300 and corresponds to the position of the roller gap 310. The discharge hopper 110 is configured to output molten glass 400 into the roller gap 310, so that the molten glass 400 forms a pool within the roller gap 310. The first heating element 120 and the second heating element 130 are connected to different height positions of the discharge hopper 110 to achieve segmented, precise temperature control of the discharge hopper 110.

[0042] The discharge hopper 110 includes a receiving section 111, a buffer section 112, a leveling section 113, and a discharge nozzle 114 arranged sequentially along the discharge direction. The receiving section 111, the buffer section 112, the leveling section 113, and the discharge nozzle 114 are connected in sequence and arranged from top to bottom. The feed pipe 200 is configured to deliver the glass melt 400 to the receiving section 111, and the glass melt 400 continues to flow downward under the action of gravity and its own pressure. Specifically, the volume of the receiving section 111 is larger than that of the leveling section 113. The buffer section 112 is designed in a constricted shape. The large end of the buffer section 112 is connected to the receiving section 111, and the small end of the buffer section 112 is connected to the leveling section 113. The receiving section 111 is configured to receive the glass melt 400, and the buffer section 112 is configured to buffer the glass melt 400. As the glass melt 400 flows through the buffer section 112, its cross-sectional area gradually decreases. During this process, the buffer section 112 can effectively buffer the glass melt 400, slow down its flow rate, and reduce the pressure generated by the glass melt 400 flowing into the leveling section 113. This allows the glass melt 400 to flow into the leveling section 113 slowly and evenly, improving the uniformity of the glass melt 400 flow. The uniform material section 113 is connected to the discharge nozzle 114. The position of the discharge nozzle 114 corresponds to the position of the roller gap 310. The glass melt 400 flowing uniformly in the uniform material section 113 can flow downward through the discharge nozzle 114 to the roller gap 310, so as to realize the calendering of the glass melt 400.

[0043] Furthermore, the first heating element 120 is connected to the receiving section 111, and the first heating element 120 is configured to heat the receiving section 111; the second heating element 130 is connected to the uniform section 113, and the second heating element 130 is configured to heat the uniform section 113; the first heating element 120 and the second heating element 130 are independently adjustable, and the heating power of the first heating element 120 is less than the heating power of the second heating element 130, so as to achieve segmented precise temperature control of the receiving section 111 and the uniform section 113, improve the temperature distribution uniformity of the glass melt 400, avoid product defects, and ensure product quality.

[0044] It should be noted that during the discharge process of the discharge mechanism 100, the feed pipe 200 delivers the glass melt 400 to the receiving section 111. Because the receiving section 111 has a large volume, it can receive a large volume of glass melt 400, ensuring the buffer capacity of the glass melt 400. Furthermore, under the heating action of the first heating element 120, the viscosity of the glass melt 400 is reduced, allowing the glass melt 400 to disperse evenly within the receiving section 111, facilitating its subsequent flow into the homogenizing section 113 via the buffer section 112. The buffer section 112 is designed with a constricted opening, and the cross-sectional area of ​​the glass melt 400 gradually decreases as it flows through it. During this process, the buffer section 112 effectively buffers the glass melt 400, reducing its... The flow rate is increased, and its flow uniformity is improved. The volume of the uniform section 113 is relatively small, and the glass melt 400 flowing down from the buffer section 112 can quickly fill all corners of the uniform section 113, further improving the flow uniformity of the glass melt 400. Under the secondary heating action of the second heating element 130, the glass melt 400 can be heated better, further reducing the viscosity of the glass melt 400, which is conducive to the subsequent glass melt 400 flowing out in a waterfall shape through the outlet 114. In this process, because the volume of the uniform section 113 is relatively small, the heating effect of the second heating element 130 on the uniform section 113 is better, which can achieve precise temperature control of the uniform section 113, improve the temperature distribution uniformity of the glass melt 400, and thus ensure product quality.

[0045] Optionally, the ratio of the volume of the receiving section 111 to the volume of the uniform section 113 is 1.5-2. If the ratio of the volume of the receiving section 111 to the volume of the uniform section 113 is too large, the pull amount of the glass melt 400 will fluctuate and the error will increase, which is not conducive to the discharge control; if the ratio of the volume of the receiving section 111 to the volume of the uniform section 113 is too small, the heating effect of the first heating element 120 and the second heating element 130 will be dispersed, the heat cannot be concentrated, and the heating and heat preservation effect will be poor.

[0046] The first heating element 120 includes a first heating section 121 and a second heating section 122. The first heating section 121 and the second heating section 122 are positioned opposite each other on both sides of the receiving section 111 and are both welded to the receiving section 111. The first heating section 121 and the second heating section 122 can generate heat when energized to heat the receiving section 111. Specifically, both the first heating section 121 and the second heating section 122 are zigzag-shaped, which, compared to the traditional straight-line structure, results in a lower failure rate, higher utilization rate, and adaptability to more production scenarios, offering good versatility.

[0047] In this embodiment, the specific structure of the second heating element 130 is the same as that of the first heating element 120, and will not be described again here.

[0048] It should be noted that the first heating element 120 and the second heating element 130 can operate independently without interfering with each other. Their independent control feature ensures that if the first heating element 120 (or the second heating element 130) malfunctions, the second heating element 130 (or the first heating element 120) can still be used, thereby reducing losses. Furthermore, the ability to independently control the heating power allows it to meet the needs of products with more specific characteristics, such as lower incoming material temperatures or higher viscosity requirements.

[0049] Optionally, the heating power of the first heating element 120 is greater than half and less than the heating power of the second heating element 130, so as to reasonably compensate the temperature of the glass melt 400 that first enters the discharge hopper 110 (that is, the glass melt 400 in the uniform material section 113), making its temperature approximately the same as that of the glass melt 400 that subsequently enters the discharge hopper 110 (that is, the glass melt 400 in the receiving section 111), ensuring a uniform temperature distribution of the glass melt 400 in the discharge hopper 110 and improving product quality. Furthermore, by using the second heating element 130 to reheat the glass melt 400 in the uniform material section 113, the viscosity of the glass melt 400 can be further reduced, improving the flow uniformity of the glass melt 400, ensuring that the glass melt 400 can flow out of the discharge nozzle 114 in a waterfall-like manner, resulting in good product quality.

[0050] Specifically, during the flow of the glass melt 400 in the discharge hopper 110, the glass melt 400 flows sequentially through the receiving section 111, the buffer section 112, the uniform section 113, and the discharge nozzle 114. During this process, the glass melt 400 that enters the discharge hopper 110 first has a longer heat dissipation time. Although its heating time is also longer, the heat dissipation per unit time is greater than the heating amount. Therefore, the glass melt 400 that enters the discharge hopper 110 first has a lower temperature than the glass melt 400 that enters the discharge hopper 110 later. In other words, the glass melt 400 in the uniform section 113 has a lower temperature than the glass melt 400 in the receiving section 111. Therefore, in this application, in order to ensure that the temperature distribution of the glass melt 400 in the discharge hopper 110 is uniform, the heating power of the first heating element 120 is controlled to be greater than half of the heating power of the second heating element 130 and less than the heating power of the second heating element 130, so as to reasonably compensate the temperature of the glass melt 400 in the uniform material section 113, so that the temperature of the glass melt 400 in the uniform material section 113 and the glass melt 400 in the receiving section 111 is approximately the same, thereby improving the temperature uniformity and improving the product quality.

[0051] Furthermore, both the first heating element 120 and the second heating element 130 are nickel discs, and their material can be selected from nickel alloys. Nickel has good mechanical, physical and chemical properties. Adding suitable metal elements can improve its oxidation resistance, corrosion resistance and high temperature strength, and improve certain physical properties.

[0052] It is worth noting that both the receiving section 111 and the leveling section 113 are rectangular frames. The receiving section 111 includes a first sidewall 1111, a first endwall 1112, a second sidewall 1113, and a second endwall (not shown in the figure) connected end to end. The first sidewall 1111 and the second sidewall 1113 are arranged parallel and spaced apart, and the first endwall 1112 and the second endwall are arranged parallel and spaced apart. The first sidewall 1111 is perpendicular to the first endwall 1112. The leveling section 113 includes a third sidewall 1131, a third endwall 1132, a fourth sidewall 1133, and a fourth endwall (not shown in the figure) connected end to end. The third sidewall 1131 and the fourth sidewall 1133 are arranged parallel and spaced apart, and the third endwall 1132 and the fourth endwall are arranged parallel and spaced apart. The third sidewall 1131 is perpendicular to the third endwall 1132. The distance between the first sidewall 1111 and the second sidewall 1113 is greater than the distance between the third sidewall 1131 and the fourth sidewall 1133. The first endwall 1112 and the third endwall 1132 are located on the same plane, and the second endwall and the fourth endwall are located on the same plane. That is, the receiving section 111 and the leveling section 113 have the same length but different widths, so that the volume of the receiving section 111 is greater than the volume of the leveling section 113.

[0053] In this embodiment, the first sidewall 1111, the first endwall 1112, the second sidewall 1113, and the second endwall are all arranged perpendicular to the horizontal plane, and the third sidewall 1131, the third endwall 1132, the fourth sidewall 1133, and the fourth endwall are all arranged perpendicular to the horizontal plane. That is, the discharge direction of the entire discharge mechanism 100 is vertical, so as to ensure the stability of the glass melt 400 flowing downward under the action of gravity.

[0054] In this embodiment, the heights of the receiving section 111 and the leveling section 113 are also different. The height of the receiving section 111 is greater than that of the leveling section 113. This is to reduce the width difference between the receiving section 111 and the leveling section 113 while ensuring that the volume of the receiving section 111 is equal to twice the volume of the leveling end. This reduces the change in cross-sectional area of ​​the glass melt 400 flowing from the receiving section 111 to the leveling section 113, avoids turbulence in the glass melt 400 caused by excessive cross-sectional area change, and improves the uniformity of the glass melt 400 flow.

[0055] The buffer section 112 includes a first buffer wall 1121, a fifth end wall 1122, a second buffer wall 1123, and a sixth end wall (not shown in the figure) connected end to end. One end of the first buffer wall 1121 is connected to the first side wall 1111, and the other end is connected to the third side wall 1131. One end of the second buffer wall 1123 is connected to the second side wall 1113, and the other end is connected to the fourth side wall 1133. The fifth end wall 1122 and the first end wall 1112 are located on the same plane, and the sixth end wall and the second end wall are located on the same plane. That is, the receiving section 111, the leveling section 113, and the buffer section 112 are all the same length. Specifically, during the process of the glass melt 400 flowing from the receiving section 111 to the uniform material section 113 through the buffer section 112, the first buffer wall 1121 and the second buffer wall 1123 work together to limit the flow cross-sectional area of ​​the glass melt 400, thereby buffering the glass melt 400 and causing the glass melt 400 to flow downward slowly and uniformly.

[0056] In this embodiment, both the first buffer wall 1121 and the second buffer wall 1123 are arc-shaped, and the arc-shaped openings of the first buffer wall 1121 and the second buffer wall 1123 are all oriented towards the outside of the buffer section 112, so as to improve the smoothness of the downward flow of the glass melt 400, avoid crystallization, and ensure product quality.

[0057] Optionally, the central angles corresponding to the arcs formed by the first buffer wall 1121 and the second buffer wall 1123 are the same, and both are between 30 and 50 degrees. Reasonable central angles corresponding to the arcs formed by the first buffer wall 1121 and the second buffer wall 1123 can stably guide the glass melt 400 to ensure that the glass melt 400 flows smoothly downward, avoid crystallization, and ensure product quality.

[0058] Optionally, the discharge hopper 110 further includes a guide section 115. The guide section 115 is constricted and connects between the uniform material section 113 and the discharge nozzle 114. The larger end of the guide section 115 is connected to the uniform material section 113, and the smaller end is connected to the discharge nozzle 114. The guide section 115 is configured to guide and direct the glass melt 400 flowing out of the uniform material section 113, so that it flows evenly to the discharge nozzle 114 and finally flows out in a waterfall shape through the discharge nozzle 114, ensuring the calendering effect. Specifically, the discharge nozzle 114 is located in the middle of the width direction of the uniform material section 113, that is, the outlet of the guide section 115 is located in the middle of the width direction of the uniform material section 113, so that the guide section 115 guides the glass melt 400 towards the center, ensuring the uniformity of the flow and heating of the glass melt 400. In addition, the guide section 115 is arc-shaped to further improve the smoothness of the downward flow of the glass melt 400, avoid crystallization, and ensure product quality.

[0059] Optionally, the discharge hopper 110 also includes a top cover 140. The top cover 140 is placed on and connected to the receiving section 111. The top cover 140 is configured to seal the top of the receiving section 111 to prevent external debris from entering and to ensure the cleanliness of the glass melt 400. Specifically, the top cover 140 has a feed inlet 141, which is configured to connect to the feed pipe 200. The feed pipe 200 can pass the glass melt 400 into the receiving section 111 through the feed inlet 141 to realize the feeding function of the glass melt 400.

[0060] Optionally, the outer wall of the discharge hopper 110 is densely covered with multiple hooks 150. The hooks 150 are configured to attach insulation cotton to the outside of the discharge hopper 110, thereby reducing heat loss and ensuring uniform temperature distribution of the glass melt 400 inside the discharge hopper 110, thus saving energy and reducing emissions. Specifically, the hooks 150 can be made of refractory materials (such as molybdenum, tungsten, chromium, etc.) or heat-resistant materials (such as silicon carbide, boron nitride, etc.).

[0061] Furthermore, the outer wall of the discharge hopper 110 has multiple planes, and multiple hooks 150 are arranged in a rectangular array on each plane. The number of hooks 150 on each plane satisfies the following relationship: N = S / d, n = N / 2; where N is the number of hooks 150 in each horizontal row, i.e., the number of columns of hooks 150; n is the number of hooks 150 in each vertical column, i.e., the number of rows of hooks 150; S is the area of ​​the corresponding plane; and d is the flow rate of the glass melt 400, in tons / day.

[0062] Optionally, the discharge mechanism 100 also includes a level gauge 160. The level gauge 160 is installed in the discharge hopper 110 and is configured to detect the liquid level of the glass melt 400 in the discharge hopper 110, so as to avoid glass bubbles and other quality defects (cold cracking, edge curling, etc.) caused by low liquid level or incomplete glass melt 400, thereby improving the quality of the formed glass sheet.

[0063] Furthermore, the level gauge 160 can be a pressure or temperature sensor for measuring the liquid level. Its working principle is that the static pressure or temperature of the measured liquid is proportional to its height. Specifically, the level gauge 160 is installed on the top cover 140, with its lower end extending into the discharge hopper 110 and flush with the bottom surface of the receiving section 111, to detect the pressure or temperature of the molten glass 400. Its material can be a high-temperature resistant material (platinum, rhodium, etc.). The upper end of the level gauge 160 is configured to process the pressure or temperature signal of the molten glass 400 and calculate the liquid level height of the molten glass 400 based on this signal.

[0064] Optionally, the discharge mechanism 100 further includes a temperature sensor 180. The temperature sensor 180 is installed in the discharge hopper 110 and configured to detect the temperature of the molten glass 400 within the discharge hopper 110, so as to adjust the real-time temperature of the molten glass 400 via the first heating element 120 and the second heating element 130, ensuring the uniformity of the temperature distribution of the molten glass 400. In this embodiment, there are two sets of temperature sensors 180. The first set of temperature sensors 180 is installed on the second end wall of the receiving section 111 and is electrically connected to the first heating element 120. The second set of temperature sensors 180 is installed on the fourth end wall of the leveling section 113 and is electrically connected to the second heating element 130.

[0065] Furthermore, the first group of temperature sensors 180 are arranged at intervals along the vertical direction and are all located in the middle of the second end wall. The second group of temperature sensors 180 are also arranged at intervals along the vertical direction and are all located in the middle of the fourth end wall. The number of the first group of temperature sensors 180 and the number of the second group of temperature sensors 180 satisfy the following relationship: N1 = S1d, N2 = N1-1; where N1 is the number of the first group of temperature sensors 180; N2 is the number of the second group of temperature sensors 180; S1 is the area of ​​the second end wall; and d is the flow rate of the glass melt 400 in tons / day.

[0066] Furthermore, the temperature sensor 180 can be a thermocouple wire (the material can be refractory or heat-resistant, such as platinum, platinum-rhodium, etc.) and is welded to the outer wall of the discharge hopper 110 to measure the real-time temperature of the glass melt 400 in the discharge hopper 110, so as to facilitate the adjustment of the temperature of the glass melt 400 by the first heating element 120 and the second heating element 130, and ensure the uniformity of the temperature distribution of the glass melt 400.

[0067] Optionally, the discharge mechanism 100 also includes a flow regulating clamp 170. The flow regulating clamp 170 is clamped outside the discharge nozzle 114, and adjusting bolts are provided at both ends of the flow regulating clamp 170. By loosening or tightening the adjusting bolts, the discharge nozzle 114 can be loosened or clamped to adjust its shape and size, preventing deformation and glass crystallization at the nozzle during use (crystallization is easily caused by low flow rate or low temperature of the molten glass 400), ensuring that the waterfall-like molten glass 400 flowing from the discharge nozzle 114 is uniform and stable, with an appropriate flow rate. Specifically, the material of the flow regulating clamp 170 can be selected from refractory materials (molybdenum, tungsten, chromium, etc.) or heat-resistant materials (silicon carbide, boron nitride, etc.).

[0068] The discharge mechanism 100 provided in this application embodiment includes a discharge hopper 110 comprising a receiving section 111, a buffer section 112, a leveling section 113, and a discharge nozzle 114 arranged sequentially along the discharge direction. The volume of the receiving section 111 is greater than the volume of the leveling section 113. The buffer section 112 is constricted. The large end of the buffer section 112 is connected to the receiving section 111, and the small end of the buffer section 112 is connected to the leveling section 113. The leveling section 113 is connected to the discharge nozzle 114. A first heating element 120 is connected to the receiving section 111, and a second heating element 130 is connected to the leveling section 113. The heating power of the first heating element 120 is less than the heating power of the second heating element 130. Compared with the prior art, the discharge mechanism 100 provided in this application, by employing a buffer section 112 disposed between the receiving section 111 and the uniform section 113, and a first heating element 120 and a second heating element 130 respectively connected to the receiving section 111 and the uniform section 113, can buffer and precisely control the temperature of the glass melt 400 in a segmented manner, effectively improving the flow uniformity and temperature distribution uniformity of the glass melt 400, and ensuring product quality. This results in high production efficiency and good product quality in the microcrystalline glass production apparatus 10.

[0069] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. Industrial applicability

[0070] In summary, this application provides a discharge mechanism that can buffer and precisely control the temperature of the glass melt in segments, effectively improving the flow uniformity and temperature distribution uniformity of the glass melt and ensuring product quality.

[0071] This application also provides a microcrystalline glass production apparatus that can buffer and perform segmented precise temperature control on the glass melt, effectively improving the flow uniformity and temperature distribution uniformity of the glass melt and ensuring product quality.

Claims

1. A discharge mechanism characterized by, The device includes a discharge hopper, a first heating element, and a second heating element. The discharge hopper includes a receiving section, a buffer section, a leveling section, and a discharge nozzle arranged sequentially along the discharge direction. The volume of the receiving section is larger than the volume of the leveling section. The buffer section is constricted. The larger end of the buffer section is connected to the receiving section, and the smaller end of the buffer section is connected to the leveling section. The leveling section is connected to the discharge nozzle. The first heating element is connected to the receiving section, and the second heating element is connected to the leveling section. The heating power of the first heating element is less than the heating power of the second heating element.

2. The dispensing mechanism of claim 1, wherein, The ratio of the volume of the receiving section to the volume of the uniform material section is 1.5-2.

3. A discharge mechanism according to claim 1 or 2, characterised in that, The heating power of the first heating element is greater than half the heating power of the second heating element.

4. A discharge mechanism according to any one of claims 1 to 3, wherein Both the receiving section and the leveling section are rectangular frames. The receiving section includes a first side wall, a first end wall, a second side wall, and a second end wall connected end to end. The leveling section includes a third side wall, a third end wall, a fourth side wall, and a fourth end wall connected end to end. The distance between the first side wall and the second side wall is greater than the distance between the third side wall and the fourth side wall. The first end wall and the third end wall are located on the same plane, and the second end wall and the fourth end wall are located on the same plane.

5. The dispensing mechanism of claim 4, wherein, The first sidewall, the first endwall, the second sidewall, and the second endwall are all arranged perpendicular to the horizontal plane, and the third sidewall, the third endwall, the fourth sidewall, and the fourth endwall are all arranged perpendicular to the horizontal plane.

6. A discharge mechanism according to claim 4 or 5, wherein, The buffer section includes a first buffer wall, a fifth end wall, a second buffer wall, and a sixth end wall connected end to end. One end of the first buffer wall is connected to the first side wall, and the other end is connected to the third side wall. One end of the second buffer wall is connected to the second side wall, and the other end is connected to the fourth side wall. The fifth end wall and the first end wall are located on the same plane, and the sixth end wall and the second end wall are located on the same plane.

7. The dispensing mechanism of claim 6, wherein, Both the first buffer wall and the second buffer wall are arc-shaped, and the arc-shaped openings of the first buffer wall and the second buffer wall are both oriented outward from the buffer section.

8. The dispensing mechanism of claim 7, wherein, The central angles of the arcs formed by the first buffer wall and the second buffer wall are the same, and both are between 30 and 50 degrees.

9. A dispensing mechanism according to any one of claims 1 to 8, wherein, The discharge hopper also includes a guide section, which is constricted in shape. The large end of the guide section is connected to the uniform material section, and the small end of the guide section is connected to the discharge nozzle. The discharge nozzle is located in the middle of the uniform material section in the width direction.

10. A dispensing mechanism according to any one of claims 1 to 9, wherein, The discharge hopper also includes a top cover, which is placed on the receiving section and connected to the receiving section. The top cover has a feed inlet.

11. A dispensing mechanism according to any one of claims 1 to 10, wherein, The outer wall of the discharge hopper is densely covered with multiple hooks, which are configured to attach insulation cotton.

12. A dispensing mechanism according to any one of claims 1 to 11, wherein, The discharge mechanism also includes a level gauge, which is installed in the discharge hopper and configured to detect the liquid level of the molten glass in the discharge hopper.

13. A dispensing mechanism according to any one of claims 1 to 12, wherein, The discharge mechanism also includes a temperature sensor installed in the discharge hopper, which is configured to detect the temperature of the molten glass inside the discharge hopper.

14. A glass-ceramic production apparatus, characterized in that, The discharge mechanism according to any one of claims 1 to 13.

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