Discharge tube, discharge device and glass production plant

Abstract

The application relates to a discharge pipe, a discharge device and a glass production equipment. The discharge pipe comprises a first pipe section, a second pipe section and a third pipe section in sequence along the liquid material flow direction, the pipe diameters of the first pipe section, the second pipe section and the third pipe section are sequentially reduced, an obtuse angle is formed between the first pipe section and the second pipe section, an obtuse angle is formed between the connecting line of the two ends of the third pipe section and the second pipe section, and the end of the third pipe section away from the second pipe section forms a discharge port. The above discharge pipe can meet the needs of sufficient cooling of liquid material and reduction of crystallization risk, improve the forming quality of liquid material and improve the forming stripe phenomenon.

Description

Technical Field

[0001] The present application relates to the technical field of optical glass forming, and in particular to a discharge pipe, a discharge device and glass production equipment. Background Art

[0002] The production of optical glass typically involves melting and forming. The forming process involves cooling and homogenizing the molten glass in a discharge tank, then channeling it through a discharge pipe connected to the tank into a mold for cooling and forming. The temperature and flow rate within the discharge pipe have a crucial impact on the quality of the optical glass formed. However, in current discharge devices, the glass melt is not sufficiently cooled in the discharge pipe, and is prone to crystallization, which affects the forming striations and results in poor optical glass forming quality. Summary of the Invention

[0003] Based on this, it is necessary to provide a discharge pipe, a discharge device and a glass production equipment to address the problem that the glass liquid is not sufficiently cooled in the discharge pipe and is prone to crystallization.

[0004] A discharge pipe comprises a first pipe section, a second pipe section and a third pipe section in sequence along the direction of liquid flow, wherein the diameters of the first pipe section, the second pipe section and the third pipe section decrease in sequence, an obtuse angle is formed between the first pipe section and the second pipe section, an obtuse angle is formed between the line connecting the two ends of the third pipe section and the second pipe section, and a discharge port is formed at one end of the third pipe section away from the second pipe section.

[0005] In the above-mentioned discharge pipe, when discharging, the first pipe section is inclined to the horizontal plane, and the glass liquid and other liquid materials flow into the forming mold through the first pipe section, the second pipe section and the third pipe section in sequence. The design of the first pipe section, the second pipe section and the third pipe section with decreasing diameters in sequence allows the front end of the discharge pipe to have a larger heat dissipation area to fully cool the liquid material, while the rear end of the discharge pipe has a smaller diameter, which can increase the flow rate of the liquid material after cooling at the front end and reduce the residence time of the lower temperature liquid material in the discharge pipe, which is beneficial to reduce the risk of crystallization of the liquid material. At the same time, the first pipe section and the second pipe section form an obtuse angle, and the second pipe section can buffer the impact force of the liquid material when it flows from the first pipe section to the second pipe section, slowing down the flow rate of the liquid material in the second pipe section and improving the cooling effect of the liquid material in the second pipe section. In addition, the buffering of the impact force of the liquid material by the second pipe section is also beneficial to eliminate the steady flow stripes of the liquid material and improve the forming stripe phenomenon of the liquid material. The obtuse angle between the connecting line of the two ends of the third pipe section and the second pipe section is beneficial to adapt the discharge direction and flow rate of the discharge port to the molding requirements of the forming mold. Therefore, the above-mentioned discharge pipe can take into account the requirements of sufficient cooling of the liquid material and reducing the risk of crystallization, thereby improving the molding quality of the liquid material and improving the molding streak phenomenon.

[0006] In one embodiment, the discharge pipe includes two second pipe sections and two third pipe sections, both of the second pipe sections are connected to the first pipe section, the second pipe sections and the third pipe sections are arranged in sequence along the liquid flow direction in a one-to-one correspondence, and the discharge pipe has two discharge ports located at one end of the two third pipe sections away from the second pipe section.

[0007] In one embodiment, the third pipe segment is arc-shaped, and the angle between the tangents at both ends of the third pipe segment is 85°-120°.

[0008] In one embodiment, the discharge pipe also includes a fourth pipe segment connecting the first pipe segment and the second pipe segment, and a fifth pipe segment connecting the second pipe segment and the third pipe segment. The diameter of the fourth pipe segment is smaller than that of the first pipe segment and larger than that of the second pipe segment, and the diameter of the fifth pipe segment is equal to that of the second pipe segment.

[0009] In one embodiment, the first pipe segment, the fourth pipe segment, and the fifth pipe segment are parallel.

[0010] In one embodiment, the diameter of the end of the fourth pipe segment connected to the first pipe segment gradually decreases in the direction from the first pipe segment to the fourth pipe segment, and the diameter of the end of the third pipe segment connected to the fifth pipe segment gradually decreases along the direction of liquid flow.

[0011] In one embodiment, during the discharging operation, the second pipe section is parallel to the horizontal direction.

[0012] A discharge device comprises a discharge pool and a discharge pipe as described in any of the above embodiments, wherein the discharge pool is provided with an inlet and an outlet, and an end of a first pipe section of the discharge pipe away from the second pipe section is connected to the outlet.

[0013] In one embodiment, the discharge pool is further provided with a flow-blocking baffle located at the outflow port, at least a portion of the flow-blocking baffle is spaced from the side wall of the outflow port to form a liquid trough for the liquid material to pass through, and the liquid trough is at least partially located at the bottom of the discharge pool.

[0014] A glass production device comprises a forming mold and a discharging device as described in any one of the above embodiments, wherein the forming mold has a cooling surface, and a discharging port of the discharging device is opposite to the cooling surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the discharge device in some embodiments.

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of the discharge pool in the discharge device shown.

[0017] Figure 3 for Figure 1 Schematic diagram of the structure of the discharge pipe in the discharge device shown.

[0018] Figure 4 Schematic diagram of the structure in which two second pipe segments are connected to the fourth pipe segment in some embodiments.

[0019] Figure 5 for Figure 3 A partial enlarged schematic diagram of the discharge pipe A area is shown.

[0020] Figure 6 for Figure 3 A partial enlarged schematic diagram of the discharge pipe B area is shown.

[0021] Figure 7 Schematic diagram of the structure in which a flow-blocking baffle is disposed in an outflow port in some embodiments.

[0022] Reference numerals:

[0023] 10. Discharge device; 11. Discharge tank; 111. Inlet; 112. Outlet; 12. Flow-blocking baffle; 121. Liquid tank; 20. Discharge pipe; 21. First pipe section; 22. Second pipe section; 23. Third pipe section; 231. Discharge port; 24. Fourth pipe section; 25. Fifth pipe section; 26. First electrode; 27. Second electrode; 28. Third electrode; 29. ​​Fourth electrode; 31. Fifth electrode. DETAILED DESCRIPTION

[0024] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application 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 a limitation on this application.

[0026] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or identifying the number of the indicated technical features. Thus, a feature defined with "first" or "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0027] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0029] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0030] Please refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 is a structural schematic diagram of the discharging device 10 in some embodiments, Figure 2 is a structural schematic diagram of the discharging pool 11 in some embodiments, Figure 3The figure is a schematic diagram of the structure of the discharge pipe 20 in some embodiments. The discharge pipe 20 provided herein can be used in the discharge device 10. The discharge device 10 can be combined with a forming mold (not shown) to form a glass production device. The glass production device includes, but is not limited to, a device for producing any suitable glass sheet, such as optical glass, for example, cooling molten glass to form a glass sheet. In some embodiments, the forming mold is provided with a cooling surface for cooling and forming liquid material, such as molten glass. The discharge device 10 may also include a discharge tank 11, which has an inlet 111 and an outlet 112. The discharge pipe 20 is provided with a discharge port 231 opposite the cooling surface. During the production process (discharging operation of the discharge device 10), the liquid material flows from the inlet 111 into the discharge tank 11, where it is cooled and homogenized. It then flows from the outlet 112 into the discharge pipe 20. After cooling and conduction through the discharge pipe 20, it flows from the discharge port 231 to the cooling surface of the forming mold, where it is cooled to form a glass sheet.

[0031] In some embodiments, the discharge pipe 20 includes a first pipe segment 21, a second pipe segment 22, and a third pipe segment 23 in sequence along the direction of liquid flow. The diameters of the first pipe segment 21, the second pipe segment 22, and the third pipe segment 23 decrease in sequence. The first pipe segment 21, the second pipe segment 22, and the third pipe segment 23 can all be pipe structures with equal diameters at all locations, or they can have partially tapered diameters. The maximum diameter of the second pipe segment 22 is no greater than that of the first pipe segment 21, and at least a portion of the pipe segment 21 has a smaller diameter than the first pipe segment 21. The maximum diameter of the third pipe segment 23 is no greater than that of the second pipe segment, and at least a portion of the pipe segment 23 has a smaller diameter than the second pipe segment 22. An obtuse angle is formed between the first pipe segment 21 and the second pipe segment 22. The line connecting the two ends of the third pipe segment 23 forms an obtuse angle with the second pipe segment 22. The end of the third pipe segment 23 away from the second pipe segment 22 forms the discharge port 231 of the discharge pipe 20.

[0032] It can be understood that when the discharging operation is carried out, the end of the first pipe section 21 away from the second pipe section 22 is connected to the outflow outlet 112 of the discharge pool 11, and the second pipe section 22 can be parallel to the horizontal plane or inclined to the horizontal plane. When the second pipe section 22 is inclined to the horizontal plane, the first pipe section 21 is also inclined to the horizontal plane. The first pipe section 21 and the second pipe section 22 both form acute angles with the horizontal plane, and the angle between the first pipe section 21 and the horizontal plane is greater than the angle between the second pipe section 22 and the horizontal plane. That is to say, the slope of the second pipe section 22 is gentler than that of the first pipe section 21.

[0033] When the discharge pipe 20 is discharging, liquid material such as molten glass flows into the forming mold through the first pipe section 21, the second pipe section 22, and the third pipe section 23 in sequence. The design of the first pipe section 21, the second pipe section 22, and the third pipe section 23 with successively decreasing diameters results in a decreasing cooling effect of the first pipe section 21, the second pipe section 22, and the third pipe section 23 on the liquid material. The front end of the discharge pipe 20 has a larger heat dissipation area to fully cool the liquid material, while the rear end of the discharge pipe 20 has a smaller diameter, which can increase the flow rate of the liquid material after cooling at the front end. The flow rate of the liquid material in the first pipe section 21, the second pipe section 22, and the third pipe section 23 increases, which helps to reduce the residence time of the liquid material with a lower temperature at the rear end of the discharge pipe 20, thereby helping to reduce the risk of crystallization of the liquid material with a lower temperature. At the same time, the first pipe section 21 and the second pipe section 22 form an obtuse angle. During the discharging operation, the slope of the second pipe section 22 is gentler than that of the first pipe section 21. The second pipe section 22 can buffer the impact force of the liquid when it flows from the first pipe section 21 to the second pipe section 22, slow down the flow rate of the liquid in the second pipe section 22, and improve the cooling effect of the liquid in the second pipe section 22. In addition, the buffering of the impact force of the liquid by the second pipe section 22 is also conducive to eliminating the steady flow stripes of the liquid and improving the molding stripe phenomenon of the liquid. The obtuse angle between the connecting line of the two ends of the third pipe section 23 and the second pipe section 22 is conducive to the discharge direction and flow rate of the discharge port 231 to adapt to the molding requirements of the molding mold. Therefore, the above-mentioned discharge pipe 20 can take into account the needs of sufficient cooling of the liquid and reducing the risk of crystallization, improve the molding quality of the liquid, and improve the molding stripe phenomenon.

[0034] In some embodiments, the discharge pipe 20 further includes a fourth pipe segment 24 and a fifth pipe segment 25. The two ends of the fourth pipe segment 24 connect the first pipe segment 21 and the second pipe segment 22, and the two ends of the fifth pipe segment 25 connect the second pipe segment 22 and the third pipe segment 23. The diameter of the fourth pipe segment 24 is smaller than the first pipe segment 21 and larger than the second pipe segment 22, and the diameter of the fifth pipe segment 25 is equal to the diameter of the second pipe segment 22. The fourth pipe segment 24 can extend the flow path of the liquid in the discharge pipe 20, enhance the cooling effect of the discharge pipe 20 on the liquid, and meet the requirement of sufficient cooling. The diameter of the fourth pipe segment 24 is between the first pipe segment 21 and the second pipe segment 22, which not only achieves sufficient cooling but also helps reduce the probability of crystallization of the liquid after cooling in the first pipe segment 21. The fifth pipe segment 25 forms an obtuse angle with the second pipe segment 22. During the discharging operation, the slope of the second pipe segment 22 is gentler than that of the fifth pipe segment 25, which is beneficial to increasing the flow rate of the liquid material after being decelerated by the second pipe segment 22. The diameter of the fifth pipe segment 25 is the same as that of the second pipe segment 22, which can also prevent the flow rate of the liquid material from being too fast, so that the flow rate of the liquid material flowing out of the discharge port 231 can adapt to the cooling rate of the forming mold, thereby improving the forming quality of the glass plate.

[0035] In some embodiments, the first pipe section 21, the fourth pipe section 24 and the fifth pipe section 25 are parallel, and the second pipe section 22 can buffer the liquid material passing through the first pipe section 21 and the second pipe section 22 in sequence, improve the cooling effect of the second pipe section 22 and the pipe sections behind the second pipe section 22 on the liquid material, and eliminate the disorderly stripes in the forming.

[0036] Further, in combination with Figure 3 and Figure 4 shown in some embodiments, the second pipe section 22, the fifth pipe section 25 and the third pipe section 23 are each provided with two, two second pipe sections 22 are each connected with the fourth pipe section 24, for example, the two second pipe sections 22 are arranged in a substantially V shape, and each end is connected with the fourth pipe section 24 to form a three-way structure with the fourth pipe section 24. Two fifth pipe sections 25 are connected to one end of the second pipe section 22 away from the fourth pipe section 24 in a one-to-one correspondence, and two third pipe sections 23 are connected to one end of the fifth pipe section 25 away from the third pipe section 23 in a one-to-one correspondence.

[0037] It can be understood that in the present embodiment, the discharge pipe 20 has two discharge ports 231 located at the ends of the two third pipe sections 23 away from the second pipe section 22, and the provision of two second pipe sections 22 can divide the liquid material flowing through the first pipe section 21 and the fourth pipe section 24 into two parts, so that the liquid material flows out of the two discharge ports 231 through the fifth pipe section 25 and the fourth pipe section 24. The two discharge ports 231 can be respectively opposite to two cooling forming stations of one forming mold, or simultaneously opposite to the cooling surfaces of two forming molds, and can simultaneously perform cooling forming of two glass plate materials, thereby improving the production efficiency of the glass plate materials. At the same time, the provision of dividing the liquid material into two parts can reduce the heat carried by the liquid material in each second pipe section 22, so that the third pipe section 23 and the pipe sections behind the third pipe section 23 can sufficiently cool the liquid material, thereby improving the cooling effect of the discharge pipe 20 on the liquid material, and adapting to the cooling forming of liquid material with higher cooling demand. The reduction of the liquid material flow of each third pipe section 23 is also conducive to improving the temperature difference between the middle part and the peripheral part of the liquid material, thereby improving the temperature uniformity of the liquid material flowing onto the forming mold, and improving the forming quality of the glass plate material.

[0038] In some embodiments, the third pipe section 23 is arc-shaped, the included angle between the tangent lines at the two ends of the third pipe section 23 is 85°-120°, and the tangent line at the end of the third pipe section 23 connected with the fifth pipe section 25 can be parallel to the fifth pipe section 25. In this way, the third pipe section 23 can be more smoothly connected with the fifth pipe section 25, and the discharge direction and flow rate of the end of the discharge port 231 can better adapt to the position of the forming mold and the forming demand of the liquid material, for example, the end face of the third pipe section 23 away from the fifth pipe section 25 is parallel to the cooling surface.

[0039] In combination with Figure 3 , Figure 5 andFigure 6 As shown, in some embodiments, the diameter of the end of the fourth pipe segment 24 connecting to the first pipe segment 21 gradually decreases in the direction from the first pipe segment 21 to the fourth pipe segment 24. The diameter of the end of the third pipe segment 23 connecting to the fifth pipe segment 25 gradually decreases along the direction of liquid flow. This allows two pipe segments of different diameters to be smoothly connected, which facilitates smooth transfer of liquid, adapts to the diameter changes of different pipe segments, and improves molding quality. Of course, the diameters of the ends of the two third pipe segments 23 connecting to the fourth pipe segment 24 can also gradually decrease along the direction of liquid flow.

[0040] Combine Figure 1 and Figure 7 As shown, in some embodiments, the discharge pool 11 further includes a flow-blocking baffle 12 located at the outlet 112. The flow-blocking baffle 12 is fixed in the outlet 112, and at least a portion of the flow-blocking baffle 12 is spaced from the side wall of the outlet 112 to form a liquid tank 121 for the liquid material to pass through. Figure 7 The dotted line in the figure illustrates the shape of the outflow port 112. With this arrangement, the flow-blocking baffle 12 can prevent the liquid from flowing into the discharge pipe 20 from the middle of the outflow port 112, allowing the liquid to flow from the edge of the outflow port 112 through the liquid groove 121 into the discharge port 231. In other words, the liquid flowing into the first pipe segment 21 through the liquid groove 121 first passes through the wall of the first pipe segment 21, and then flows from the edge of the first pipe segment 21 to the middle. Because the wall position of the pipe segment structure, i.e., the edge position, has a more significant cooling effect on the liquid, this arrangement can enhance the cooling effect of the discharge pipe 20 on the liquid, effectively reduce the temperature difference between the middle and peripheral portions of the liquid, improve the temperature uniformity of the liquid, and prevent the liquid in the middle from flowing directly into the discharge pipe 20 without being fully cooled, thereby improving the molding quality and molding yield of the glass sheet.

[0041] Furthermore, in some embodiments, two opposing liquid troughs 121 are formed between the two opposing portions of the sidewall of the flow-blocking baffle 12 and the outlet 112. The liquid flows from the two opposing liquid troughs 121 into the two opposing portions of the tube wall of the first tube segment 21, further improving the temperature uniformity of the liquid at all locations. Of course, the flow-blocking baffle 12 and the sidewall of the outlet 112 may also be provided with four, six, or more liquid troughs 121, with each pair of liquid troughs 121 positioned opposite each other.

[0042] In some embodiments, at least a portion of the liquid tank 121, or at least a portion of one of the liquid tanks 121, is located at the bottom of the discharge tank 11. That is, during discharge, at least a portion of the liquid tank 121 is vertically located at the lowest point of the material storage space within the discharge tank 11. Therefore, when liquid material needs to be replaced to change the type of formed glass sheet, the liquid material in the discharge tank 11 can be completely drained through the liquid tank 121 at the bottom first, preventing incomplete liquid material drainage from causing different liquid materials to mix and affect the yield of the glass sheet.

[0043] In some embodiments, the discharge pipe 20 further includes a first electrode 26, a second electrode 27, a third electrode 28, a fourth electrode 29, and a fifth electrode 31, which are sequentially spaced apart along the direction of liquid flow. The first electrode 26 and the second electrode 27 can be disposed at both ends of the first pipe segment 21. An electrical circuit is formed between the first electrode 26, the first pipe segment 21, and the second electrode 27, thereby heating the first pipe segment 21. The third electrode 28 can be disposed at an end of the fourth pipe segment 24 away from the first pipe segment 21. An electrical circuit is formed between the second electrode 27, the fourth pipe segment 24, and the third electrode 28, thereby heating the fourth pipe segment 24. The fourth electrode 29 can be disposed at an end of the fifth pipe segment 25 away from the second pipe segment 22. An electrical circuit is formed between the third electrode 28, the second pipe segment 22, the fifth pipe segment 25, and the fourth electrode 29, thereby heating the second pipe segment 22 and the fifth pipe segment 25. The fifth electrode 31 can be disposed at an end of the third tube segment 23 distal from the fifth tube segment 25, for example, near the discharge port 231. An electrical circuit is formed between the fourth electrode 29, the third tube segment 23, and the fifth electrode 31, thereby heating the third tube segment 23. Providing multiple electrodes for electrical connection to an external power source allows heating of different tube segments of the discharge pipe 20, facilitating temperature control of each tube segment according to the process requirements of the liquid material, thereby improving the forming quality of the glass sheet.

[0044] In the present application, the materials of the various components of the discharge device 10 are not limited, and can be specifically designed according to the temperature of the liquid material and the transmission requirements. In some embodiments, the materials of the discharge pool 11 and the various pipe sections of the discharge pipe 20 include but are not limited to metal materials such as platinum, or any other applicable high-temperature corrosion-resistant materials. In the present application, each different pipe section, or the pipe diameter gradient portion of a certain pipe section and other parts can be prepared in any applicable direction such as expansion pipe connection, cone pipe connection or mold integral molding. The material of each electrode includes but is not limited to metal materials such as platinum, or any other applicable high-temperature corrosion-resistant conductive material.

[0045] In the present application, the sizes of the various components of the discharge device 10 are not limited and can be specifically designed according to the cooling requirements and transmission flow requirements of the liquid material. In some embodiments, the diameter (inner diameter) of the inlet 111 is 30mm-100mm, for example, 40mm-80mm, and the thickness of the tube wall of the inlet 111 is 0.3mm-2.5mm, for example, 0.5mm-2mm. The main part of the discharge pool 11 can be roughly in the shape of a hollow cylinder, the diameter (inner diameter) of the main part of the discharge pool 11 is 130mm-300mm, for example, 150mm-250mm, the height of the main part of the discharge pool 11 is 500mm-900mm, for example, 550mm-750mm, and the thickness of the tube wall of the main part of the discharge pool 11 is 0.5mm-3.5mm, for example, 0.8mm-2.5mm. The diameter (inner diameter) of the outlet 112 is 5 mm to 20 mm, for example, 7 mm to 15 mm, and the wall thickness of the outlet 112 is 0.5 mm to 2.5 mm, for example, 0.8 mm to 2 mm. The wall thickness of the first pipe section 21 can be the same as that of the outlet 112 .

[0046] In some embodiments, the flow-blocking baffle 12 is provided with two liquid grooves 121. The edges defining the liquid grooves 121 of the flow-blocking baffle 12 can be straight or curved, and the wall surface defining the liquid grooves 121 of the outflow outlet 112 is a curved surface. The maximum width of the liquid grooves 121 is 1 mm to 7 mm, for example, 2.5 mm to 2.5 mm. This facilitates reasonable control of the flow rate and flow rate of the outflow outlet 112, improving the cooling effect on the liquid material while meeting the flow rate requirements and ensuring the temperature uniformity of the liquid material flowing into the discharge pipe 20.

[0047] In some embodiments, the discharging device 10 satisfies the following conditional formula:

[0048] H= (8ηθ (1- L' / L) / πρg) (L0 / R04 + (L1 / R14 +L2 / R24 +L3 / R34 ) sinA + L4 / R44)

[0049] Wherein, H is the vertical dimension from the liquid surface in the discharge tank 11 to the discharge port 231 of the discharge pipe 20, in m, and η is the fluid viscosity of the liquid in the discharge device 10, in m. 2 / s, θ is the flow rate of liquid in the discharge pipe 20, the unit is m 3 / s. L'=(L1+L2+L3)cosA, where L1 and L2 are the lengths of the first pipe segment 21 and the fourth pipe segment 24, respectively; L3 is the dimension of the second pipe segment 22 and the fifth pipe segment 25 in a direction parallel to the first pipe segment 21; and A is the angle between the first pipe segment 21, the fourth pipe segment 24, and the fifth pipe segment 25 and the horizontal direction. L is the dimension of the discharge pipe 20 in a direction parallel to the first pipe segment 21, i.e., the distance from the end of the first pipe segment 21 away from the fourth pipe segment 24 to the discharge port 231 in a direction parallel to the first pipe segment 21. ρ is the density of the liquid in the discharge device 10, expressed in kg / m 3 , g is the acceleration due to gravity, which can be taken as 9.81m / s 2 L0 is the vertical dimension from the liquid surface in the discharge tank 11 to the center of the outflow port 112, R04 is the radius (inner diameter) of the outflow port 112, R14 is the radius (inner diameter) of the first pipe segment 21, R24 is the radius (inner diameter) of the fourth pipe segment 24, R34 is the radius (inner diameter) of the second pipe segment 22 and the fifth pipe segment 25, L4 is the vertical dimension of the third pipe segment 23, i.e., the vertical distance from the end of the third pipe segment 23 connecting to the fifth pipe segment 25 to the discharge port 231, and R44 is the radius (inner diameter) of the third pipe segment 23. It will be appreciated that the above conditional expression can be expressed as: H = L0 + L1*sinA + L2*sinA + L3*sinA + L4.

[0050] When the above conditions are met, the dimensions and parameters of each part of the discharge device 10 can be reasonably configured, and the multi-segment structure design of the discharge pipe 20 can be combined to enable the discharge device 10 to fully cool the liquid while meeting the liquid flow requirements, and not easily crystallize, thereby effectively improving the molding quality and molding efficiency of the glass plate.

[0051] In some embodiments, the length of the first tube segment 21 accounts for 1 / 4 to 1 / 2, for example, 1 / 4 to 1 / 3, of the total length of the discharge tube 20 (i.e., the dimension of the discharge tube 20 in a direction parallel to the first tube segment 21). The length of the fourth tube segment 24 accounts for 1 / 4 to 1 / 5, for example, 1 / 4 to 1 / 3, of the total length of the discharge tube 20. The inner diameter of the fourth tube segment 24 is 1 / 3 to 9 / 10, for example, 1 / 2 to 9 / 10, of the inner diameter of the first tube segment 21. The length of the portion of the fourth tube segment 24 where the diameter gradually changes, connected to the first tube segment 21, is 20 mm to 80 mm, for example, 30 mm to 60 mm. The combined length of the second and fifth pipe segments 22, 25, parallel to the first pipe segment 21, is 1 / 4 to 1 / 2, for example, 1 / 5 to 1 / 3, of the total length of the discharge pipe 20. The inner diameters of the second and fifth pipe segments 22, 25, are 2 / 6 to 4 / 6, for example, 2 / 6 to 3 / 6, of the inner diameter of the fourth pipe segment 24. The angle between the two second pipe segments 22 is 90° to 180°, for example, 110° to 160°. The length of the second pipe segments 22 is 20 mm to 100 mm, for example, 40 mm to 70 mm. The vertical dimension of the third pipe segment 23 is 1 / 300-1 / 15 of the vertical dimension of the discharge pipe 20 (i.e., the vertical distance from the end of the first pipe segment 21 distal from the fourth pipe segment 24 to the discharge port 231), for example, 1 / 60-3 / 60. The inner diameter of the third pipe segment 23 is 1 / 3-9 / 10 of the inner diameter of the second pipe segment 22 and the fifth pipe segment 25, for example, 1 / 2-9 / 10. The vertical distance between the third pipe segment 23 and the cooling surface is, for example, 3 mm to 15 mm, for example, 3 mm to 8 mm. The length of the portion of the third pipe segment 23 that connects to the fifth pipe segment 25 and where the diameter gradually changes is 20 mm to 80 mm, for example, 30 mm to 60 mm.

[0052] In some embodiments, the distance between the first electrode 26 and the outlet 112 is 30 mm to 300 mm, for example, 50 mm to 250 mm. The distance between the second electrode 27 and the first electrode 26 may be 0.5 to 1 times the length of the first tube segment 21. The distance between the third electrode 28 and the second electrode 27 may be 0.5 to 1 times the length of the fourth tube segment 24. The distance between the fourth electrode 29 and the third electrode 28 in a direction parallel to the first tube segment 21 may be 0.5 to 1 times the overall dimension of the second tube segment 22 and the fifth tube segment 25 in a direction parallel to the first tube segment 21. The vertical distance from the fifth electrode 31 to the fourth electrode 29 may be 0.5 to 1 times the vertical dimension of the third tube segment 23.

[0053] It is understood that in the discharge device 10 of any of the above embodiments, the glass liquid and other liquid materials are cooled and homogenized in the discharge pool 11 according to the process requirements, and then flow into the first pipe section 21 through the outflow port 112. Due to the obstruction of the flow-blocking baffle 12, the flow rate of the liquid material in the first pipe section 21 is slowed down, the residence time is prolonged, and the liquid material can be fully cooled, and the temperature difference between the edge and the middle part of the liquid material is reduced. The first pipe section 21 has the largest internal diameter in the discharge pipe 20 and the strongest cooling capacity. After being significantly cooled by the first pipe section 21, the liquid material flows into the fourth pipe section 24. The internal diameter of the fourth pipe section 24 is slightly smaller than that of the first pipe section 21. While continuing to cool the liquid material, it is not easy to crystallize. After being significantly cooled by the fourth pipe section 24, the liquid material is divided into two parts and flows into the two second pipe sections 22 respectively. The second pipe section 22 can reduce the impact of the glass liquid, slow down the flow rate of the glass liquid, and at the same time divide the heat carried by the liquid material into two parts, which can significantly cool the liquid material. After being significantly cooled by the second pipe section 22, the liquid material flows into the fifth pipe section 25 and the third pipe section 23. The inner diameter of the third pipe section 23 is further reduced compared to the second pipe section 22, further cooling the liquid material while reducing the risk of crystallization. After being cooled by the third pipe section 23, the liquid material flows out of the two outlets 231 onto the cooling surfaces of the two forming molds, where it is cooled and formed into a glass sheet.

[0054] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A discharging device, characterized in that: The invention comprises a discharge pool and a discharge pipe, wherein the discharge pool is provided with an inlet and an outlet, and the discharge pipe comprises a first pipe section, a second pipe section and a third pipe section in sequence along the flow direction of the liquid material, wherein the diameters of the first pipe section, the second pipe section and the third pipe section decrease in sequence, an obtuse angle is formed between the first pipe section and the second pipe section, an obtuse angle is formed between the line connecting the two ends of the third pipe section and the second pipe section, an end of the third pipe section away from the second pipe section forms a discharge port, and an end of the first pipe section away from the second pipe section is connected to the outlet; The discharge pool is also provided with a flow-blocking baffle located at the outflow port, at least part of which is spaced from the side wall of the outflow port to form a liquid trough for the liquid to pass through, and the flow-blocking baffle can prevent the liquid from flowing from the middle of the outflow port into the discharge pipe.

2. The discharging device according to claim 1, characterized in that: The discharge pipe includes two second pipe sections and two third pipe sections. The two second pipe sections are connected to the first pipe section. The second pipe sections and the third pipe sections are arranged in sequence along the direction of liquid flow in a one-to-one correspondence. The discharge pipe has two discharge ports located at one end of the two third pipe sections away from the second pipe section.

3. The discharging device according to claim 1, characterized in that: The third pipe section is arc-shaped, and the angle between the tangents at both ends of the third pipe section is 85°-120°.

4. The discharging device according to claim 1, characterized in that: The discharge pipe also includes a fourth pipe segment connecting the first pipe segment and the second pipe segment, and a fifth pipe segment connecting the second pipe segment and the third pipe segment. The diameter of the fourth pipe segment is smaller than that of the first pipe segment and larger than that of the second pipe segment, and the diameter of the fifth pipe segment is equal to that of the second pipe segment.

5. The discharging device according to claim 4, characterized in that: The first pipe segment, the fourth pipe segment, and the fifth pipe segment are parallel.

6. The discharging device according to claim 4, characterized in that: The diameter of the end of the fourth pipe segment connected to the first pipe segment gradually decreases in the direction from the first pipe segment to the fourth pipe segment, and the diameter of the end of the third pipe segment connected to the fifth pipe segment gradually decreases along the flow direction of the liquid.

7. The discharging device according to claim 1, characterized in that: During the discharging operation, the second pipe section is parallel to the horizontal direction.

8. The discharging device according to claim 1, characterized in that: Two opposite parts of the flow-blocking baffle and the side wall of the outflow port are spaced apart to form two opposite liquid tanks.

9. The discharging device according to claim 1, characterized in that: The liquid tank is at least partially located at the bottom of the discharge tank.

10. A glass production equipment, characterized in that, It comprises a forming mold and a discharging device as described in any one of claims 1 to 9, wherein the forming mold has a cooling surface, and the discharging port of the discharging device is opposite to the cooling surface.

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