Discharging mechanism and microcrystalline glass production device

Abstract

The invention discloses a discharging mechanism and a glass ceramic production device, and relates to the technical field of glass production. The discharging mechanism comprises a discharging hopper, a first heating piece and a second heating piece. The discharging hopper comprises a material receiving section, a buffering section, a material uniformizing section and a discharging nozzle which are sequentially arranged in the discharging direction, the volume of the material receiving section is larger than that of the material uniformizing section, the buffering section is in a necking shape, the large end of the buffering section is connected with the material receiving section, the small end of the buffering section is connected with the material uniformizing section, the material uniformizing section is connected with the discharging nozzle, and the first heating piece is connected with the material receiving section. The second heating piece is connected with the material uniformizing section, and the heating power of the first heating piece is smaller than that of the second heating piece. Compared with the prior art, the discharging mechanism provided by the invention can be used for carrying out buffering and sectional type accurate temperature control on the glass melt, so that the flowing uniformity and the temperature distribution uniformity of the glass melt are effectively improved, and the product quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of glass production, and in particular to a discharging mechanism and a microcrystalline glass production device. Background Art

[0002] At present, in the production process of microcrystalline glass, the hopper is generally used to overflow and pull down the glass melt to convey the glass melt to the calendering rollers, thereby realizing the calendering of the glass melt. However, the current hopper has a simple structure and is designed in a straight cylindrical shape. The glass melt that enters the hopper later will exert a greater pressure on the glass melt that enters the hopper first, causing the glass melt flow rate distribution in the hopper to be quite different, resulting in poor flow uniformity of the glass melt, and the current hopper is subjected to a uniform heating treatment, which will make the temperature of the glass melt that enters the hopper later higher than the temperature of the glass melt that enters the hopper first (because the glass melt that enters the hopper first has a longer heat dissipation time, although its heating time is also longer, but the heat dissipation per unit time is greater than the heating amount, so the temperature of the glass melt that enters the hopper first is lower), resulting in uneven temperature distribution of the glass melt in the hopper, which directly affects product quality.

[0003] In view of this, it is particularly important to design and manufacture a discharging mechanism and a glass-ceramic production device with uniform flow and uniform temperature distribution, especially in glass production. Summary of the invention

[0004] The object of the present invention is to provide a discharging mechanism that can buffer and perform segmented precise temperature control on molten glass, effectively improve the flow uniformity and temperature distribution uniformity of the molten glass, and ensure product quality.

[0005] Another object of the present invention is to provide a microcrystalline glass production device that can buffer and perform segmented precise temperature control on the glass melt, effectively improve the flow uniformity and temperature distribution uniformity of the glass melt, and ensure product quality.

[0006] The present invention is achieved by adopting the following technical solutions.

[0007] A discharging mechanism comprises a discharging hopper, a first heating element and a second heating element. The discharging hopper comprises a material receiving section, a buffer section, a material mixing section and a discharging nozzle which are sequentially arranged along the discharging direction. The volume of the material receiving section is greater than that of the material mixing section. The buffer section is arranged in a constricted shape. The large end of the buffer section is connected to the material receiving section, the small end of the buffer section is connected to the material mixing section, the material mixing section is connected to the discharging nozzle, the first heating element is connected to the material receiving section, the second heating element is connected to the material mixing section, and the heating power of the first heating element is less than the heating power of the second heating element.

[0008] Optionally, the ratio of the volume of the material receiving section to the volume of the material mixing section is 1.5-2.

[0009] Optionally, the heating power of the first heating element is greater than half of the heating power of the second heating element.

[0010] Optionally, the material receiving section and the material mixing section are both in the shape of a rectangular frame, the material 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 material mixing 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.

[0011] Optionally, the first side wall, the first end wall, the second side wall and the second end wall are all arranged perpendicular to the horizontal plane, and the third side wall, the third end wall, the fourth side wall and the fourth end wall are all arranged perpendicular to the horizontal plane.

[0012] 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.

[0013] Optionally, the first buffer wall and the second buffer wall are both arranged in an arc shape, and the arc-shaped openings of the first buffer wall and the second buffer wall are both arranged toward the outside of the buffer section.

[0014] Optionally, the central angles of the arcs of the first buffer wall and the second buffer wall are the same, and are both 30 degrees to 50 degrees.

[0015] Optionally, the discharge hopper also includes a drainage section, which is arranged in a constricted shape, with a large end of the drainage section connected to the material mixing section, and a small end of the drainage section connected to a discharge nozzle, and the discharge nozzle is located in the middle of the material mixing section in the width direction.

[0016] Optionally, the discharge hopper further comprises a top cover, which is disposed on the material receiving section and connected to the material receiving section, and the top cover is provided with a feed port.

[0017] Optionally, the outer wall of the discharge hopper is densely provided with a plurality of hooks, and the hooks are used to hang the thermal insulation cotton.

[0018] Optionally, the discharging mechanism further comprises a liquid level meter, which is installed on the discharging hopper and is used to detect the liquid level of the molten glass in the discharging hopper.

[0019] Optionally, the discharging mechanism further includes a temperature sensor, which is installed on the discharging hopper and is used to detect the temperature of the molten glass in the discharging hopper.

[0020] A microcrystalline glass production device includes the above-mentioned discharging mechanism, which includes a discharging hopper, a first heating element and a second heating element. The discharging hopper includes a material receiving section, a buffer section, a material mixing section and a discharging nozzle which are arranged in sequence along the discharging direction. The volume of the material receiving section is larger than that of the material mixing section. The buffer section is arranged in a constricted shape. The large end of the buffer section is connected to the material receiving section, the small end of the buffer section is connected to the material mixing section, the material mixing section is connected to the discharging nozzle, the first heating element is connected to the material receiving section, the second heating element is connected to the material mixing section, and the heating power of the first heating element is smaller than the heating power of the second heating element.

[0021] The discharging mechanism and the glass-ceramic production device provided by the present invention have the following beneficial effects:

[0022] The discharging mechanism provided by the present invention comprises a discharging hopper including a material receiving section, a buffer section, a material mixing section and a discharging nozzle which are sequentially arranged along the discharging direction, the volume of the material receiving section is larger than the volume of the material mixing section, the buffer section is arranged in a constricted shape, the large end of the buffer section is connected to the material receiving section, the small end of the buffer section is connected to the material mixing section, the material mixing section is connected to the discharging nozzle, the first heating element is connected to the material receiving section, the second heating element is connected to the material mixing section, and the heating power of the first heating element is smaller than the heating power of the second heating element. Compared with the prior art, the discharging mechanism provided by the present invention adopts a buffer section arranged between the material receiving section and the material mixing section and a first heating element and a second heating element respectively connected to the material receiving section and the material mixing section, so that the glass melt can be buffered and the temperature can be precisely controlled in sections, which effectively improves the flow uniformity and temperature distribution uniformity of the glass melt and ensures the product quality.

[0023] The microcrystalline glass production device provided by the present invention includes a discharging mechanism, which can buffer the glass melt and perform segmented precise temperature control, effectively improve the flow uniformity and temperature distribution uniformity of the glass melt, and ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of the structure of a glass-ceramic production device provided in an embodiment of the present invention;

[0026] Figure 2 An axonometric view of a discharging mechanism provided in an embodiment of the present invention;

[0027] Figure 3 A front view of a discharging mechanism provided in an embodiment of the present invention;

[0028] Figure 4 This is a left view of the discharging mechanism provided in an embodiment of the present invention.

[0029] Icons: 10-microcrystalline glass production device; 100-discharging mechanism; 110-discharging hopper; 111-receiving section; 1111-first side wall; 1112-first end wall; 1113-second side wall; 112-buffer section; 1121-first buffer wall; 1122-fifth end wall; 1123-second buffer wall; 113-mixing section; 1131-third side wall; 1132-third end wall; 1133-third Four side walls; 114-discharging nozzle; 115-drainage section; 120-first heating element; 121-first heating section; 122-second heating section; 130-second heating element; 140-top cover; 141-feeding port; 150-hook; 160-liquid level meter; 170-flow regulating fixture; 180-temperature sensor; 200-feeding pipe; 300-calendering rollers; 310-gap between rollers; 400-glass melt. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0036] Please refer to Figure 1 The embodiment of the present invention provides a glass-ceramic production device 10 for producing glass-ceramic. The device can buffer and perform segmented precise temperature control on the glass melt 400, effectively improve the flow uniformity and temperature distribution uniformity of the glass melt 400, and ensure product quality.

[0037] The microcrystalline glass production device 10 includes a feed pipe 200, a discharging mechanism 100 and a calendering roller pair 300. The feed pipe 200 is used to feed the glass melt 400 into the discharging mechanism 100, and the discharging mechanism 100 is used to feed the glass melt 400 into the calendering roller pair 300 in a waterfall shape to form a material beach in the roller gap 310 of the calendering roller pair 300. The calendering roller pair 300 is used to extrude and cool the glass melt 400 to form microcrystalline glass.

[0038] Please refer to Figures 2 to 4The discharging mechanism 100 includes a discharging hopper 110, a first heating element 120 and a second heating element 130. The feeding pipe 200 is connected to the discharging hopper 110, and the feeding pipe 200 is used to feed the glass melt 400 into the discharging hopper 110. The discharging hopper 110 is arranged above the calendering rollers 300 and corresponds to the position of the roller gap 310. The discharging hopper 110 is used to output the glass melt 400 into the roller gap 310, so that the glass melt 400 forms a material beach in the roller gap 310. The first heating element 120 and the second heating element 130 are connected to different height positions of the discharging hopper 110 to achieve segmented precise temperature control of the discharging hopper 110.

[0039] The discharging hopper 110 includes a material receiving section 111, a buffer section 112, a material mixing section 113 and a discharging nozzle 114 which are sequentially arranged along the discharging direction. The material receiving section 111, the buffer section 112, the material mixing section 113 and the discharging nozzle 114 are sequentially connected and sequentially arranged from top to bottom. The feeding pipe 200 is used to deliver the glass melt 400 to the material receiving section 111. The glass melt 400 continues to flow downward under the action of gravity and its own pressure. Specifically, the volume of the material receiving section 111 is larger than the volume of the material mixing section 113, the buffer section 112 is arranged in a constricted shape, the large end of the buffer section 112 is connected to the material receiving section 111, and the small end of the buffer section 112 is connected to the material mixing section 113, the material receiving section 111 is used to receive the molten glass 400, and the buffer section 112 is used to buffer the molten glass 400. The cross-sectional area of ​​the molten glass 400 gradually decreases in the process of flowing through the buffer section 112. In this process, the buffer section 112 can effectively buffer the molten glass 400, slow down its flow rate, and reduce the pressure exerted on the molten glass 400 by the molten glass 400 flowing into the material mixing section 113, so that the molten glass 400 flows slowly and evenly into the material mixing section 113, thereby improving the uniformity of the flow of the molten glass 400. The material-leveling section 113 is connected to the discharge nozzle 114 , and the mouth of the discharge nozzle 114 corresponds to the position of the gap 310 between the two rollers. The glass melt 400 flowing evenly in the material-leveling section 113 can flow downward to the gap 310 between the two rollers through the discharge nozzle 114 , so as to realize the calendering molding of the glass melt 400 .

[0040] Furthermore, the first heating element 120 is connected to the material connection section 111, and the first heating element 120 is used to heat the material connection section 111; the second heating element 130 is connected to the material mixing section 113, and the second heating element 130 is used to heat the material mixing section 113; the first heating element 120 and the second heating element 130 are independently adjusted, 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 realize segmented precise temperature control of the material connection section 111 and the material mixing section 113, improve the uniformity of temperature distribution of the glass melt 400, avoid product defects, and ensure product quality.

[0041] It should be noted that, during the discharging process of the discharging mechanism 100, the feeding pipe 200 delivers the molten glass 400 to the receiving section 111. Since the receiving section 111 has a large volume, it can receive a large volume of molten glass 400, thereby ensuring the buffer capacity of the molten glass 400. Moreover, under the heating action of the first heating element 120, the viscosity of the molten glass 400 can be reduced, thereby making the molten glass 400 dispersed evenly in the receiving section 111, which is beneficial for the subsequent molten glass 400 to flow into the material mixing section 113 through the buffer section 112. The buffer section 112 is configured in a constricted shape, and the cross-sectional area of ​​the molten glass 400 gradually decreases during the process of flowing through the buffer section 112. In this process, the buffer section 112 can effectively buffer the molten glass 400 and slow down its The flow rate can be increased and its flow uniformity can be improved; and the volume of the material mixing section 113 is relatively small, and the glass melt 400 flowing down from the buffer section 112 can quickly fill all corners of the material mixing section 113, further improving the flow uniformity of the glass melt 400, and under the secondary heating action of the second heating element 130, the glass melt 400 can be better heated, and the viscosity of the glass melt 400 can be further reduced, which is conducive to the subsequent glass melt 400 flowing out in a waterfall shape through the discharge nozzle 114. In this process, since the volume of the material mixing section 113 is relatively small, the second heating element 130 has a better heating effect on the material mixing section 113, can realize the precise temperature control function of the material mixing section 113, and improve the temperature distribution uniformity of the glass melt 400, thereby ensuring product quality.

[0042] Preferably, the volume ratio of the material receiving section 111 to the volume ratio of the material mixing section 113 is 1.5-2. If the volume ratio of the material receiving section 111 to the volume ratio of the material mixing section 113 is too large, the pulling amount and error of the glass melt 400 will become larger, which is not conducive to the discharge control; if the volume ratio of the material receiving section 111 to the volume ratio of the material mixing section 113 is too small, the heating effects 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 effects are poor.

[0043] 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 arranged on both sides of the material connection section 111, and are both welded to the material connection section 111. The first heating section 121 and the second heating section 122 can generate heat when powered on to heat the material connection section 111. Specifically, the first heating section 121 and the second heating section 122 are both in a zigzag shape. Compared with the traditional linear structure, the failure damage rate is lower, the utilization rate is higher, and it can also adapt to more production scenarios and has good versatility.

[0044] In this embodiment, the specific structure of the second heating element 130 is the same as the specific structure of the first heating element 120, and will not be repeated here.

[0045] It should be noted that the first heating element 120 and the second heating element 130 can work independently of each other without interfering with each other. The independent control feature can ensure that when the first heating element 120 (or the second heating element 130) is abnormally damaged, the second heating element 130 (or the first heating element 120) can continue to be used, thereby reducing losses. In addition, the feature of independent control of heating power can make it possible to match product requirements with more characteristics, such as lower incoming material temperature requirements and higher viscosity requirements.

[0046] Preferably, the heating power of the first heating element 120 is 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 that first enters the discharge hopper 110 (that is, the glass melt 400 in the material mixing section 113), so that the temperature of the glass melt 400 that enters the discharge hopper 110 later (that is, the glass melt 400 in the material receiving section 111) is roughly the same, so as to ensure that the temperature distribution of the glass melt 400 in the discharge hopper 110 is uniform and improve the product quality. In addition, by the second heating element 130 performing secondary heating on the glass melt 400 in the material mixing section 113, the viscosity of the glass melt 400 can be further reduced, the flow uniformity of the glass melt 400 can be improved, and the glass melt 400 can be ensured to flow out of the discharge nozzle 114 in a waterfall-like manner, so as to achieve good product quality.

[0047] Specifically, during the flow of the glass melt 400 in the discharge hopper 110, the glass melt 400 flows through the material receiving section 111, the buffer section 112, the material mixing section 113 and the discharge nozzle 114 in sequence. During this process, since 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, that is, the glass melt 400 in the material mixing section 113 has a lower temperature than the glass melt 400 in the material receiving section 111. Therefore, in the present invention, in order to ensure uniform temperature distribution of the glass melt 400 in the discharge hopper 110, 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 perform reasonable temperature compensation on the glass melt 400 in the material mixing section 113, so that the temperature of the glass melt 400 in the material mixing section 113 and the glass melt 400 in the material receiving section 111 are approximately the same, thereby improving temperature uniformity and improving product quality.

[0048] Furthermore, the first heating element 120 and the second heating element 130 are both nickel disks, and the material thereof may be nickel alloy. 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.

[0049] It is worth noting that the material receiving section 111 and the material leveling section 113 are both in the shape of a rectangular frame. The material receiving section 111 includes a first side wall 1111, a first end wall 1112, a second side wall 1113 and a second end wall (not marked in the figure) connected end to end. The first side wall 1111 is parallel to and spaced from the second side wall 1113. The first end wall 1112 is parallel to and spaced from the second end wall. The first side wall 1111 is perpendicular to the first end wall 1112. The material leveling section 113 includes a third side wall 1131, a third end wall 1132, a fourth side wall 1133 and a fourth end wall (not marked in the figure) connected end to end. The third side wall 1131 is parallel to and spaced from the fourth side wall 1133. The third end wall 1132 is parallel to and spaced from the fourth end wall. The third side wall 1131 is perpendicular to the third end wall 1132. The distance between the first side wall 1111 and the second side wall 1113 is greater than the distance between the third side wall 1131 and the fourth side wall 1133, the first end wall 1112 and the third end wall 1132 are located on the same plane, and the second end wall and the fourth end wall are located on the same plane, that is, the material receiving section 111 and the material mixing section 113 have the same length and different widths, so that the volume of the material receiving section 111 is greater than the volume of the material mixing section 113.

[0050] In this embodiment, the first side wall 1111, the first end wall 1112, the second side wall 1113 and the second end wall are all arranged perpendicular to the horizontal plane, and the third side wall 1131, the third end wall 1132, the fourth side wall 1133 and the fourth end wall are all arranged perpendicular to the horizontal plane, that is, the discharging direction of the entire discharging mechanism 100 is a vertical direction, so as to ensure the stability of the glass melt 400 flowing downward under the action of gravity.

[0051] In the present embodiment, the heights of the material receiving section 111 and the material mixing section 113 are also different. The height of the material receiving section 111 is greater than the height of the material mixing section 113, so as to reduce the width difference between the material receiving section 111 and the material mixing section 113 while ensuring that the volume of the material receiving section 111 is equal to twice the volume of the material mixing end, thereby reducing the change in the cross-sectional area of ​​the glass melt 400 flowing from the material receiving section 111 to the material mixing section 113, avoiding turbulence of the glass melt 400 caused by excessive change in the cross-sectional area, and improving the uniformity of the flow of the glass melt 400.

[0052] 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) 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 lengths of the material receiving section 111, the material leveling section 113 and the buffer section 112 are the same. Specifically, in the process of the glass melt 400 in the receiving section 111 flowing to the material mixing 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, so that the glass melt 400 flows downward slowly and evenly.

[0053] In this embodiment, the first buffer wall 1121 and the second buffer wall 1123 are both arranged in an arc shape, and the arc-shaped openings of the first buffer wall 1121 and the second buffer wall 1123 are both arranged toward the outside of the buffer section 112 to improve the smoothness of the downward flow of the glass melt 400, avoid crystallization, and ensure product quality.

[0054] Optionally, the central angles of the arcs formed by the first buffer wall 1121 and the second buffer wall 1123 are the same, and are both 30 to 50 degrees. Reasonable central angles of 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, avoids crystallization, and ensures product quality.

[0055] Preferably, the discharge hopper 110 further includes a drainage section 115. The drainage section 115 is arranged in a constricted shape, and is connected between the material-scratching section 113 and the discharge nozzle 114. The large end of the drainage section 115 is connected to the material-scratching section 113, and the small end of the drainage section 115 is connected to the discharge nozzle 114. The drainage section 115 is used to guide and drain the glass melt 400 flowing out of the material-scratching 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, thereby ensuring the calendering molding effect. Specifically, the discharge nozzle 114 is located in the middle of the width direction of the material-scratching section 113, that is, the outlet of the drainage section 115 is located in the middle of the width direction of the material-scratching section 113, so that the drainage section 115 guides the glass melt 400 toward the middle, thereby ensuring the flow uniformity and heating uniformity of the glass melt 400. In addition, the drainage section 115 is arranged in an arc shape to further improve the smoothness of the downward flow of the molten glass 400, avoid crystallization, and ensure product quality.

[0056] Preferably, the discharge hopper 110 further includes a top cover 140. The top cover 140 is disposed on the material receiving section 111 and connected to the material receiving section 111. The top cover 140 is used to seal the top of the material receiving section 111 to prevent external debris from entering and ensure the cleanliness of the glass melt 400. Specifically, the top cover 140 is provided with a feed port 141, which is used to be connected to the feed pipe 200. The feed pipe 200 can pass the glass melt 400 into the material receiving section 111 through the feed port 141 to realize the feeding function of the glass melt 400.

[0057] Preferably, the outer wall of the discharge hopper 110 is densely provided with a plurality of hooks 150, and the hooks 150 are used to hang the insulation cotton to fix the insulation cotton outside the discharge hopper 110. The insulation cotton is used to insulate the discharge hopper 110 to reduce its heat loss, ensure the uniformity of the temperature distribution of the glass melt 400 in the discharge hopper 110, and save energy and reduce emissions. Specifically, the material of the hooks 150 can be selected from refractory materials (such as molybdenum, tungsten, chromium, etc.) or heat-resistant materials (such as silicon carbide, boron nitride, etc.).

[0058] Furthermore, the outer wall of the discharge hopper 110 has a plurality of planes, and a plurality of hooks 150 are distributed in a rectangular array on each plane. The number of the plurality of hooks 150 on each plane satisfies the following relationship: N=S / d, n=N / 2; wherein N is the number of hooks 150 in each horizontal row, that is, the number of columns of the hooks 150; n is the number of hooks 150 in each vertical column, that is, the number of rows of the hooks 150; S is the area of ​​the corresponding plane; and d is the flow rate of the glass melt 400, in tons / day.

[0059] Preferably, the discharging mechanism 100 further includes a liquid level meter 160. The liquid level meter 160 is installed on the discharging hopper 110, and is used to detect the liquid level of the glass melt 400 in the discharging hopper 110, so as to timely avoid glass bubbles and other quality defects (cold cracks, curling, etc.) caused by too low a liquid level or insufficient glass melt 400, thereby improving the surface quality of the formed glass plate.

[0060] Furthermore, the liquid level gauge 160 can be a pressure or temperature detector for measuring the liquid level, and the working principle is that the static pressure or temperature of the measured liquid is proportional to the height of the liquid. Specifically, the liquid level gauge 160 is installed on the top cover 140, and the lower end of the liquid level gauge 160 extends into the discharge hopper 110 and is flush with the bottom surface of the material receiving section 111 to detect the pressure or temperature of the glass melt 400. The material can be a high temperature resistant material (platinum, rhodium, etc.), and the upper end of the liquid level gauge 160 is used to process the pressure signal or temperature signal of the glass melt 400, and calculate the liquid level of the glass melt 400 according to the signal.

[0061] Preferably, the discharging mechanism 100 further includes a temperature sensor 180. The temperature sensor 180 is installed on the discharging hopper 110, and is used to detect the temperature of the glass melt 400 in the discharging hopper 110, so as to adjust the real-time temperature of the glass melt 400 through the first heating element 120 and the second heating element 130, and ensure the uniformity of the temperature distribution of the glass melt 400. In this embodiment, there are two groups of temperature sensors 180, the first group of temperature sensors 180 is installed on the second end wall of the material receiving section 111, and are both electrically connected to the first heating element 120, and the second group of temperature sensors 180 is installed on the fourth end wall of the material mixing section 113, and are both electrically connected to the second heating element 130.

[0062] Further, the first group of temperature sensors 180 are arranged at intervals in the vertical direction and are all located in the middle of the second end wall, and the second group of temperature sensors 180 are arranged at intervals in 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: N=S / d, N=N-1; wherein N is the number of the first group of temperature sensors 180; N is the number of the second group of temperature sensors 180; S is the area of ​​the second end wall; d is the flow rate of the glass melt 400, in tons / day.

[0063] Furthermore, the temperature sensor 180 can use a thermocouple wire (the material can be selected from refractory or heat-resistant materials, 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, thereby facilitating the temperature adjustment of the glass melt 400 through the first heating element 120 and the second heating element 130 to ensure the uniformity of the temperature distribution of the glass melt 400.

[0064] Preferably, the discharging mechanism 100 further includes a flow regulating fixture 170. The flow regulating fixture 170 is clamped outside the discharging nozzle 114, and adjusting bolts are provided at both ends of the flow regulating fixture 170. The discharging nozzle 114 is loosened or clamped by loosening or tightening the adjusting bolts to adjust the shape and size of the mouth of the discharging nozzle 114, so as to prevent the discharging nozzle 114 from deforming during use and crystallization of the glass at the mouth (small flow rate or low temperature of the glass melt 400 easily leads to crystallization), and ensure that the waterfall-shaped glass melt 400 flowing out of the discharging nozzle 114 is uniform and stable, and the flow rate is appropriate. Specifically, the material of the flow regulating fixture 170 can be selected from refractory materials (molybdenum, tungsten, chromium, etc.) or heat-resistant materials (silicon carbide, boron nitride, etc.).

[0065] The discharging mechanism 100 provided in the embodiment of the present invention, the discharging hopper 110 includes a material receiving section 111, a buffer section 112, a material leveling section 113 and a discharging nozzle 114 which are sequentially arranged along the discharging direction, the volume of the material receiving section 111 is greater than the volume of the material leveling section 113, the buffer section 112 is arranged in a constricted shape, the large end of the buffer section 112 is connected to the material receiving section 111, the small end of the buffer section 112 is connected to the material leveling section 113, the material leveling section 113 is connected to the discharging nozzle 114, the first heating element 120 is connected to the material receiving section 111, the second heating element 130 is connected to the material leveling section 113, and 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 discharging mechanism 100 provided by the present invention adopts the buffer section 112 disposed between the material receiving section 111 and the material mixing section 113 and the first heating element 120 and the second heating element 130 respectively connected to the material receiving section 111 and the material mixing section 113, so it can buffer and perform segmented precise temperature control on the glass melt 400, effectively improve the flow uniformity and temperature distribution uniformity of the glass melt 400, and ensure product quality. The microcrystalline glass production device 10 has high production efficiency and good product quality.

[0066] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A discharging mechanism, characterized in that: It includes a discharging hopper, a first heating element and a second heating element. The discharging hopper includes a material receiving section, a buffer section, a material mixing section and a discharging nozzle which are sequentially arranged along the discharging direction. The volume of the material receiving section is larger than the volume of the material mixing section. The buffer section is arranged in a constricted shape. The large end of the buffer section is connected to the material receiving section, the small end of the buffer section is connected to the material mixing section, the material mixing section is connected to the discharging nozzle, the first heating element is connected to the material receiving section, the second heating element is connected to the material mixing section, and the heating power of the first heating element is smaller than the heating power of the second heating element.

2. The discharging mechanism according to claim 1, characterized in that: The ratio of the volume of the material receiving section to the volume of the material mixing section is 1.5-2.

3. The discharging mechanism according to claim 1, characterized in that: The heating power of the first heating element is greater than half of the heating power of the second heating element.

4. The discharging mechanism according to claim 1, characterized in that: The material receiving section and the material mixing section are both in the shape of a rectangular frame, the material 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 material mixing 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 discharging mechanism according to claim 4, characterized in that: The first side wall, the first end wall, the second side wall and the second end wall are all arranged perpendicular to a horizontal plane, and the third side wall, the third end wall, the fourth side wall and the fourth end wall are all arranged perpendicular to a horizontal plane.

6. The discharging mechanism according to claim 4, characterized in that: 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 discharging mechanism according to claim 6, characterized in that: The first buffer wall and the second buffer wall are both arranged in an arc shape, and the arc-shaped openings of the first buffer wall and the second buffer wall are both arranged toward the outside of the buffer section.

8. The discharging mechanism according to claim 7, characterized in that: The central angles of the arcs of the first buffer wall and the second buffer wall are the same, and are both 30 degrees to 50 degrees.

9. The discharging mechanism according to claim 1, characterized in that: The discharge hopper also includes a drainage section, which is arranged in a constricted shape, wherein the large end of the drainage section is connected to the material mixing section, and the small end of the drainage section is connected to the discharge nozzle, and the discharge nozzle is located in the middle of the material mixing section in the width direction.

10. The discharging mechanism according to claim 1, characterized in that: The discharging hopper also includes a top cover, which is disposed on the material receiving section and connected to the material receiving section, and the top cover is provided with a material feeding port.

11. The discharging mechanism according to claim 1, characterized in that: The outer wall of the discharge hopper is densely provided with a plurality of hooks, and the hooks are used for hanging thermal insulation cotton.

12. The discharging mechanism according to claim 1, characterized in that: The discharging mechanism further comprises a liquid level meter, which is installed on the discharging hopper and is used to detect the liquid level of the molten glass in the discharging hopper.

13. The discharging mechanism according to claim 1, characterized in that: The discharging mechanism further includes a temperature sensor, which is installed on the discharging hopper and is used to detect the temperature of the molten glass in the discharging hopper.

14. A glass-ceramic production device, characterized in that: It comprises a discharging mechanism as described in any one of claims 1-13.

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