Molten glass discharging mechanism and glass production device

Abstract

The invention relates to a molten glass discharging mechanism and a glass production device. A first guide pipe sleeves a second guide pipe, the inner wall of the first guide pipe and the outer wall of the second guide pipe are arranged at an interval, the first guide pipe is provided with a first end and a second end which are opposite, and the second guide pipe is provided with a third end and a fourth end which are opposite; the first end is electrically connected with the third end through the first conducting ring, the second end is electrically connected with a power supply, the fourth end is electrically connected with the power supply, and the second conduit is provided with a material guiding channel penetrating through the third end and the fourth end; the conductive outer shell and the conductive inner shell are both arranged on the side, away from the first guide pipe, of the first conductive ring, the conductive outer shell sleeves the conductive inner shell, the end, away from the first conductive ring, of the conductive outer shell is connected with the outer ring face of the second conductive ring, and the end, away from the first conductive ring, of the conductive inner shell is connected with the inner ring face of the second conductive ring. The conductive inner shell is provided with a feeding port, and the end, away from the glass forming mechanism, of the guide channel is used for communicating with the containing cavity through the feeding port.

Description

Technical Field

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

[0002] In the glass production process, the glass raw materials need to be filled into the melting pool first. The glass raw materials in the melting pool undergo a series of physical and chemical reactions to form glass liquid. The glass liquid is finally transported to the glass forming mechanism through the discharge pipe to achieve glass forming. For intermittent glass production, when production needs to be stopped, the glass liquid in the discharge pipe needs to be cooled down so that the glass liquid staying in the discharge pipe solidifies and loses fluidity. When resuming production, the solidified glass liquid in the discharge pipe needs to be heated and heated to restore the fluidity of the glass liquid in the discharge pipe and continue to transport the glass liquid.

[0003] In conventional technology, the solidified molten glass in the discharge pipe is usually heated by heating the discharge pipe. However, since one end of the discharge pipe is connected to the melting pool, when the discharge pipe is heated, the heat on the discharge pipe will be transferred to the molten glass in the melting pool near the discharge pipe, thereby causing the temperature of the molten glass in the melting pool to rise sharply and causing bubbles to be generated in the molten glass, affecting the quality of the glass after final forming. Summary of the invention

[0004] Based on this, it is necessary to provide a glass liquid discharging mechanism and a glass production device to address the problem that the heat on the discharge pipe will be transferred to the glass liquid near the discharge pipe in the melting pool, thereby causing the temperature of the glass liquid in the melting pool to rise sharply and causing bubbles to be generated in the glass liquid, affecting the quality of the glass after final forming.

[0005] The technical solution is as follows:

[0006] One embodiment provides a glass liquid discharging mechanism for connecting to a mounting port of a melting pool, wherein the melting pool has a receiving cavity for receiving the glass liquid, the mounting port is communicated with the receiving cavity, and the glass liquid discharging mechanism comprises:

[0007] a material guide member, the material guide member comprising a first conduit, a second conduit and a first conductive ring, the first conduit being sleeved on the second conduit, the inner wall of the first conduit being spaced apart from the outer wall of the second conduit, the first conduit having a first end and a second end opposite to each other, the second conduit having a third end and a fourth end opposite to each other, the first end being electrically connected to the third end through the first conductive ring, the second end being used to be electrically connected to a power source, the fourth end being used to be electrically connected to a power source, the second conduit being provided with a material guide channel penetrating the third end and the fourth end, one end of the material guide channel being used to be connected to a glass forming mechanism; and

[0008] A transition piece, the transition piece includes a conductive outer shell, a conductive inner shell and a second conductive ring, the conductive outer shell and the conductive inner shell are both arranged on a side of the first conductive ring away from the first conduit, the conductive outer shell is sleeved on the conductive inner shell, one end of the conductive outer shell away from the first conductive ring is connected to the outer ring surface of the second conductive ring, one end of the conductive inner shell away from the first conductive ring is connected to the inner ring surface of the second conductive ring, the conductive inner shell is provided with a feed port, and one end of the material guiding channel away from the glass forming mechanism is used to communicate with the accommodating cavity through the feed port.

[0009] The above-mentioned glass liquid discharge mechanism is used to be arranged at the installation port of the melting pool, so that the glass liquid in the accommodating cavity can pass through the feed port and the material guide channel in sequence, and finally flow to the glass forming mechanism; in this process, the power supply, the first conduit, the first conductive ring and the second conduit are electrically connected end to end in sequence, so as to form an electric circuit. When the power supply is energized, the current flows from the second end of the first conduit to the first end, and then a part of the current at the first end will flow to the second conduit through the first conductive ring, so as to electrically heat the first conduit and the second conduit. The first conduit and the second conduit generate heat and heat the glass liquid in the material guide channel, and the other part of the current will pass through the conductive outer shell, the second conductive ring and the conductive inner shell in sequence, and then flow to the second conduit. In this way, the current on the transition piece will be much smaller than the current on the first conduit, so that the heat generated by the transition piece is much smaller than the heat generated by the first conduit, thereby preventing the transition piece from overheating the surrounding glass liquid and causing the surrounding glass liquid temperature to rise sharply; compared with the traditional technology, the above-mentioned glass liquid discharge mechanism can effectively improve the problem of bubbles in the glass liquid in the melting pool caused by the excessive temperature difference between the transition piece and the surrounding glass liquid, thereby ensuring the quality of the glass after final molding.

[0010] In one embodiment, the first end is used to be opposite to the inner wall of the installation opening, and the conductive outer shell, the conductive inner shell and the second conductive ring are all used to protrude from the bottom wall of the molten pool and extend into the accommodating cavity.

[0011] In one embodiment, the first conduit, the first conductive ring and the second conduit are arranged to form a heat-insulating cavity, the conductive outer shell, the second conductive ring, the conductive inner shell and the first conductive ring are arranged to form an air pressure balance cavity, the first conductive ring is provided with a connecting hole, and the air pressure balance cavity is connected with the heat-insulating cavity through the connecting hole.

[0012] In one embodiment, at least two communicating holes are provided and are spaced apart along the circumference of the first conductive ring.

[0013] In one of the embodiments, a first thermal insulation material is provided in the thermal insulation cavity.

[0014] In one of the embodiments, a second heat-insulating material is provided in the air pressure balance chamber.

[0015] In one embodiment, the outer radius of the second conductive ring is smaller than the outer radius of the first conductive ring.

[0016] In one embodiment, the material guide member further includes a first fixing ring, a second fixing ring and a fixing portion, the inner ring surface of the first fixing ring is connected to the second end, the first fixing ring is used to be electrically connected to the power supply, the inner ring surface of the second fixing ring is connected to the fourth end, the second fixing ring is used to be electrically connected to the power supply, the first fixing ring and the second fixing ring are spaced apart in the axial direction of the material guide channel to form an installation area between the first fixing ring and the second fixing ring, and the fixing portion is located in the installation area and abuts against the first fixing ring and the second fixing ring.

[0017] In one embodiment, the material of the fixing portion includes insulating material.

[0018] A glass production device comprises a melting pool, a glass forming mechanism and a glass liquid discharging mechanism as described above, wherein the glass liquid discharging mechanism is connected to the melting pool and is used to guide the glass liquid in the melting pool to the glass forming mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a glass production device in one embodiment of the present application.

[0021] Figure 2 It is a structural schematic diagram of the glass liquid discharging mechanism in one embodiment of the present application.

[0022] Figure 3 for Figure 2 Schematic diagram of the structure of the AA section.

[0023] Figure 4 This is a schematic structural diagram of a glass production device in another embodiment of the present application.

[0024] Notes on the attached drawings:

[0025] 10. Glass liquid discharging mechanism; 100. Material guide; 110. Material guide channel; 120. First conduit; 121. First end; 122. Second end; 130. Second conduit; 131. Third end; 132. Fourth end; 140. First conductive ring; 141. Connecting hole; 150. Heat-insulating cavity; 151. First thermal insulation material; 160. First fixing ring; 170. Second fixing ring; 180. Fixing part; 190. Installation area; 200. Transition piece; 210. Feed port; 220. Conductive outer shell; 230. Conductive inner shell; 240. Second conductive ring; 250. Air pressure balance cavity; 251. Second thermal insulation material; 20. Melting pool; 21. Accommodating cavity; 22. Installation port; 30. Glass forming mechanism. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present 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 the present 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 the present application.

[0028] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0032] See also Figure 1 In the process of glass production, glass raw materials need to be first filled into the melting pool 20. The glass raw materials in the melting pool 20 undergo a series of physical and chemical reactions to form glass liquid. The glass liquid is finally transported to the glass forming mechanism 30 through the glass liquid discharging mechanism 10, thereby realizing the molding of the glass.

[0033] Specifically, the melting pool 20 has a containing cavity 21 for containing molten glass and a mounting port 22 communicating with the containing cavity 21 .

[0034] See also Figure 1 to Figure 2One embodiment of the present application provides a glass liquid discharging mechanism 10, which is used to be connected to the mounting port 22 of the melting pool 20. The glass liquid discharging mechanism 10 includes a material guide 100 and a transition piece 200. The material guide 100 includes a first conduit 120, a second conduit 130 and a first conductive ring 140. The first conduit 120 is sleeved on the second conduit 130. The inner wall of the first conduit 120 and the outer wall of the second conduit 130 are spaced apart. The first conduit 120 has a first end 121 and a second end 122 opposite to each other. The second conduit 130 has a third end 131 and a fourth end 132 opposite to each other. The first end 121 is electrically connected to the third end 131 through the first conductive ring 140. The second end 122 is used to be electrically connected to a power source. The fourth end 132 is used to be electrically connected to a power source. The second conduit 130 is provided with a through-hole extending through the third end. 131 and a fourth end 132 of the material guiding channel 110, one end of the material guiding channel 110 is used to communicate with the glass forming mechanism 30; the transition piece 200 includes a conductive outer shell 220, a conductive inner shell 230 and a second conductive ring 240, the conductive outer shell 220 and the conductive inner shell 230 are both arranged on the side of the first conductive ring 140 away from the first conduit 120, the conductive outer shell 220 is sleeved on the conductive inner shell 230, one end of the conductive outer shell 220 away from the first conductive ring 140 is connected to the outer ring surface of the second conductive ring 240, one end of the conductive inner shell 230 away from the first conductive ring 140 is connected to the inner ring surface of the second conductive ring 240, the conductive inner shell 230 is provided with a feed port 210, and one end of the material guiding channel 110 away from the glass forming mechanism 30 is used to communicate with the accommodating cavity 21 through the feed port 210.

[0035] The above-mentioned glass liquid discharge mechanism 10 is used to be arranged at the installation port 22 of the melting pool 20, so that the glass liquid in the accommodating chamber 21 can pass through the feed port 210 and the material guiding channel 110 in sequence, and finally flow to the glass forming mechanism 30; in this process, the power supply, the first conduit 120, the first conductive ring 140 and the second conduit 130 are electrically connected end to end in sequence, so as to form an electric circuit. When the power supply is energized, the current flows from the second end 122 of the first conduit 120 to the first end 121, and then a part of the current at the first end 121 flows to the second conduit 130 through the first conductive ring 140, so as to electrically heat the first conduit 120 and the second conduit 130, and the first conduit 120 and the second conduit 130 are heated and the material guiding channel The glass liquid in 110 is heated, and the other part of the current passes through the conductive outer shell 220, the second conductive ring 240 and the conductive inner shell 230 in sequence, and then flows to the second conduit 130. In this way, the current on the transition piece 200 will be much smaller than the current on the first conduit 120, so that the heat generated by the transition piece 200 is much smaller than the heat generated by the first conduit 120, thereby preventing the transition piece 200 from overheating the surrounding glass liquid and causing the surrounding glass liquid temperature to rise sharply; compared with the traditional technology, the above-mentioned glass liquid discharging mechanism 10 can effectively improve the problem of bubbles in the glass liquid in the melting pool 20 caused by the excessive temperature difference between the transition piece 200 and the surrounding glass liquid, thereby ensuring the quality of the glass after final molding.

[0036] As an explanation, for the intermittent production of glass, when it is necessary to stop the production, the glass liquid in the material guiding channel 110 needs to be cooled down so that the glass liquid staying in the material guiding channel 110 solidifies and loses fluidity; when resuming the production, the solidified glass liquid in the material guiding channel 110 needs to be heated up so that the glass liquid in the material guiding channel 110 can restore its fluidity and continue to be transported. In this embodiment, the first conduit 120 and the second conduit 130 are heated by the power supply, the first conduit 120, and the second conduit 130. The glass liquid staying in the second conduit 130 (i.e., in the material guiding channel 110) is heated and restores its fluidity. The first conduit 120 also generates heat to play a certain role in heat preservation and heating the second conduit 130, thereby further improving the heating effect of the glass liquid.

[0037] Furthermore, when the current flows from the second end 122 of the first conduit 120 to the first end 121, a shunting phenomenon will occur at the first end 121, and a part of the current will pass through the conductive outer shell 220, the second conductive ring 240 and the conductive inner shell 230 in sequence, and the other part of the current will flow to the second conduit 130 through the first conductive ring 140. In this way, the current on the transition piece 200 will be much smaller than the current on the first conduit 120, so that the heat generated by the transition piece 200 is much smaller than the heat generated by the first conduit 120, thereby preventing the transition piece 200 from overheating the surrounding glass liquid and causing the surrounding glass liquid temperature to rise sharply, reducing the bubbles generated by the glass liquid in the later forming process, and improving the glass forming quality.

[0038] In addition, by reducing the heat generated by the transition piece 200, it is also possible to prevent the transition piece 200 from experiencing structural deformations such as cracks and breakage, thereby ensuring the assembly stability between the various components, effectively improving the structural stability between the material guide 100 and the mounting port 22, and preventing the glass liquid discharge mechanism 10 from experiencing local cracks, breakage, and fractures due to local heating.

[0039] Specifically, see Figure 2 When the power supply is turned on, the transition piece 200 and the first conductive ring 140 form a parallel structure. Due to the shunting effect of the first conductive ring 140, the current on the transition piece 200 is much smaller than the current on the first conduit 120. Therefore, the heat generated by the transition piece 200 is also less, preventing bubbles from being generated in the glass liquid.

[0040] Furthermore, the axial direction of the second conduit 130 is perpendicular to the plane where the bottom wall of the molten pool 20 is located.

[0041] In one embodiment, the second terminal 122 is used to be electrically connected to one of the positive electrode and the negative electrode of the power source, and the fourth terminal 132 is used to be electrically connected to the other of the positive electrode and the negative electrode of the power source to form a power-on loop.

[0042] In one embodiment, the installation opening 22 can be set at a position within a circle formed by a diameter of 0.75 times the distance between the shortest opposite sides of the bottom of the melting pool 20, with the center of the bottom of the melting pool 20 as the center, so that the glass liquid at various locations in the melting pool 20 can be evenly discharged through the material guide channel 110.

[0043] In one embodiment, one side of the first conductive ring 140 is connected to the first conduit 120 and the second conduit 130, and the other side of the first conductive ring 140 is connected to the transition piece 200. Due to the assembly integrity between the first conductive ring 140 and the transition piece 200, the force between the first conduit 120 and the second conduit 130 and the transition piece 200 is indirect force, thereby dispersing the pulling force of the first conduit 120 and the second conduit 130 on the transition piece 200, thereby extending the life of the transition piece 200.

[0044] Specifically, the material guiding channel 110 is disposed in the second conduit 130 , and the cross-sections of the first conduit 120 and the second conduit 130 are both circular.

[0045] Furthermore, the current density passing through each component can be adjusted by adjusting the size and thickness of the conductive outer shell 220 , the conductive inner shell 230 , the first conductive ring 140 , and the second conductive ring 240 , thereby adjusting the heat generated by each component.

[0046] Through the analysis of a large amount of experimental data, it can be known that when the thickness of the metal material used for the conductive outer shell 220, the conductive inner shell 230 and the second conductive ring 240 is 1 to 3 times the thickness of the first conductive ring 140, it can ensure that the heat generation of the transition piece 200 is controlled. At this time, the difference between the temperature of the transition piece 200 and the temperature of the glass liquid is less than or equal to 50°C, and bubbles will not be generated. In other embodiments, the difference between the temperature of the transition piece 200 and the temperature of the glass liquid can also be controlled to be less than or equal to 30°C, which will not be repeated here.

[0047] For explanation, the inner wall of the conductive inner shell 230 is arranged to form a feed inlet 210 , and the feed inlet 210 is communicated with the material guiding channel 110 .

[0048] In one embodiment, in order to ensure the smoothness of the glass liquid when flowing in the feed port 210 and the guide channel 110, the inner circle radius of the second conductive ring 240, the cross-sectional radius of the conductive inner shell 230, and the cross-sectional radius of the second conduit 130 need to be kept consistent and coaxially arranged.

[0049] See also Figure 1 In one embodiment, the first end 121 is used to be opposite to the inner wall of the installation opening 22 , and the conductive outer shell 220 , the conductive inner shell 230 and the second conductive ring 240 are all used to protrude from the bottom wall of the molten pool 20 and extend into the accommodating cavity 21 .

[0050] The conductive outer shell 220, the conductive inner shell 230 and the second conductive ring 240 all protrude from the bottom wall of the melting pool and extend into the accommodating chamber 21, so that the transition piece 200 can play a certain blocking role on the glass liquid at the bottom of the accommodating chamber 21, while the glass liquid at the middle and upper parts of the accommodating chamber 21 will not be blocked by the blocking piece 200, so as to smoothly pass through the feed port 210 into the material guiding channel 110, and finally flow smoothly to the glass forming mechanism 30 through the material guiding channel 110. In this way, impurities at the bottom of the accommodating chamber 21 will not flow to the glass forming mechanism 30 through the material guiding channel 110 together with the glass liquid, thereby ensuring the quality of the glass after final molding.

[0051] As an explanation, the glass raw materials are transformed into glass liquid through a series of physical and chemical reactions in the melting pool 20. During this process, the glass liquid will come into contact with the outside world, so that impurities are doped into the glass liquid. The glass raw materials themselves also contain certain impurities, which are brought into the melting pool 20 and accumulated at the bottom of the melting pool 20 after long-term precipitation. In addition, during the long-term use of the melting pool 20, the flow and heat transfer differences of the glass liquid will also cause the glass liquid components near the bottom wall to segregate, resulting in quality differences, thereby forming an impurity layer. In the conventional technology, the glass liquid is passed through a device The discharge pipe arranged on the bottom wall of the melting pool 20 is led out, so that impurities near one end of the discharge pipe close to the bottom wall of the melting pool 20 will flow into and pass through the discharge pipe together with the molten glass, and finally flow to the glass forming mechanism 30, thereby affecting the quality of the glass after final molding; in this embodiment, a transition piece 200 protruding from the bottom wall of the melting pool is provided at one end of the guide piece 100, so that impurities accumulated at the bottom of the accommodating chamber 21 are blocked by the transition piece 200, preventing the impurities from entering the feed port 210 and the guide channel 110 together with the molten glass, thereby ensuring the quality of the glass after final molding.

[0052] Furthermore, in the above embodiment, the bottom wall of the molten pool 20 refers to the bottom surface of the inner wall of the molten pool 20 .

[0053] In one embodiment, the transition piece 200 is about 10 mm to 300 mm higher than the plane where the bottom wall of the melting pool 20 is located. Further, the transition piece 200 is about 10 mm to 150 mm higher than the plane where the bottom wall of the melting pool 20 is located to prevent the transition piece 200 from blocking too much glass liquid.

[0054] See also Figures 2 to 3 In one embodiment, the first conduit 120, the first conductive ring 140 and the second conduit 130 are arranged to form a heat-insulating cavity 150, the conductive outer shell 220, the second conductive ring 240, the conductive inner shell 230 and the first conductive ring 140 are arranged to form an air pressure balance cavity 250, and the first conductive ring 140 is provided with a connecting hole 141, and the air pressure balance cavity 250 is connected with the heat-insulating cavity 150 through the connecting hole 141.

[0055] The connecting hole 141 is provided to connect the insulation cavity 150 with the air pressure balance cavity 250, so as to ensure the stability of the internal air pressure of the insulation cavity 150 during heating, and prevent the first conduit 120 and the second conduit 130 from deforming due to the expansion of the internal gas in the insulation cavity 150 after heating.

[0056] See also Figure 3 In one embodiment, at least two communicating holes 141 are provided and are spaced apart along the circumference of the first conductive ring 140 .

[0057] By providing at least two communicating holes 141 , the reliability of the communication between the heat insulation cavity 150 and the air pressure balance cavity 250 can be further improved, thereby preventing the air pressure in the heat insulation cavity 150 from being unstable due to the blockage of one of the communicating holes 141 .

[0058] Furthermore, in order to ensure the air pressure balance of the insulation cavity 150, holes are symmetrically opened on the first conductive ring 140 to form connecting holes 141. The number of connecting holes 141 is 2 to 8, and the aperture of the connecting holes 141 is controlled within 10 mm. Specifically in this embodiment, the number of connecting holes is 4 and they are symmetrically arranged in pairs, and the aperture is 5 mm.

[0059] See also Figure 2 In one embodiment, a first thermal insulation material 151 is disposed in the thermal insulation cavity 150 .

[0060] The first thermal insulation material 151 in the thermal insulation cavity 150 can not only effectively prevent the heat loss of the material guide member 100, realize precise control of the temperature of the glass liquid, and ensure that the glass liquid in the heat conduction channel can melt quickly, but also can improve the strength of the material guide member 100 to a certain extent, and prevent the material guide member 100 from being damaged due to external impact.

[0061] See also Figure 2 In another embodiment, a second heat-insulating material 251 is provided in the air pressure balance chamber 250 .

[0062] The second thermal insulation material 251 in the air pressure balance chamber 250 can not only effectively prevent the heat loss of the transition piece 200, but also improve the strength of the transition piece 200 to a certain extent, and prevent the transition piece 200 from being deformed due to impact.

[0063] Furthermore, the first thermal insulation material 151 and the second thermal insulation material 251 are porous thermal insulation materials, which can prevent heat loss on the one hand, and ensure that the gas can flow between the insulation cavity 150 and the air pressure balance cavity 250 on the other hand, thereby preventing the insulation cavity 150 from expanding due to unstable air pressure.

[0064] As an example, the first thermal insulation material 151 and the second thermal insulation material 251 in the above embodiments can be high temperature resistant materials such as aluminum silicate fiberboard, fiber cotton, alumina hollow ball bricks, mullite insulation bricks, etc. Technical personnel in this field can flexibly choose according to actual conditions, and no specific limitations are made here.

[0065] Furthermore, the thermal conductivity of the first thermal insulation material 151 and the second thermal insulation material 251 is less than or equal to 2.0 W / (m·K), and the volume density is in the range of 600 to 1300 kg / m3, thereby effectively reducing heat loss and accurately controlling the heat exchange amount between the second conduit 130 and the glass liquid, thereby achieving precise control of the glass liquid temperature.

[0066] See also Figure 2 In one embodiment, the outer radius of the second conductive ring 240 is smaller than the outer radius of the first conductive ring 140 .

[0067] When it is necessary to install the glass liquid discharge mechanism 10 as a whole in the installation port 22 of the melting pool 20, it is usually necessary to insert the glass liquid discharge mechanism 10 into the installation port 22 from the side of the installation port 22 away from the accommodating cavity 21. In order to ensure the installation tightness between the glass liquid discharge mechanism 10 and the installation port 22 and prevent the glass liquid from leaking, it is usually necessary to match the radius of the guide member 100 with the radius of the installation port 22. By setting the outer circle radius of the second conductive ring 240 to be smaller than the outer circle radius of the first conductive ring 140, the radius of the end of the transition member 200 close to the second conductive ring 240 can be smaller than the radius of the installation port 22, thereby ensuring that the end of the transition member 200 close to the second conductive ring 240 can enter the installation port 22 more easily, preventing the transition member 200 from colliding with the inner wall of the installation port 22 during the installation process and causing damage, thereby improving the safety and convenience of the installation process.

[0068] In one embodiment, the outer radius of the second conductive ring 240 is 0.5 to 0.9 times the outer radius of the first conductive ring 140 .

[0069] For further information, see Figure 2 The conductive outer shell 220 and the conductive inner shell 230 are both annular, and the radius of the conductive outer shell 220 matches the outer radius of the second conductive ring 240, and the radius of the conductive inner shell 230 matches the inner radius of the second conductive ring 240. In this way, the conductive outer shell 220, the second conductive ring 240 and the conductive inner shell 230 are arranged around the first conductive ring 140 to form an annular boss. The outer radius of the boss, that is, the outer radius of the second conductive ring 240, is smaller than the outer radius of the first conductive ring 140, so that the boss-shaped transition piece 200 can enter the accommodating cavity 21 through the installation opening 22 in advance, and is not easy to collide with the inner wall of the installation opening 22, thereby improving the safety and convenience during the installation process.

[0070] Specifically, when the glass liquid discharge mechanism 10 is installed for the first time, the melting pool 20 is at room temperature and there is no glass liquid inside. First, the glass liquid discharge mechanism 10 is placed vertically and coincides with the center of the installation opening 22, and the end of the guide member 100 close to the transition member 200 is slowly moved from bottom to top until the transition member 200 protrudes out of the plane where the bottom wall of the melting pool 20 is located and extends into the accommodating cavity 21, so as to ensure that the glass liquid containing impurities at the bottom of the melting pool 20 is blocked by the transition member 200, so that the high-quality glass liquid in the upper layer of the melting pool 20 is discharged from the glass liquid discharge mechanism 10 to the glass forming mechanism 30.

[0071] Furthermore, when the glass liquid discharge mechanism 10 is used for the first time, the glass liquid in the melting pool 20 will enter the reserved gap between the mounting port 22 and the glass liquid discharge mechanism 10 and fill the reserved gap. During the filling process, the glass liquid will be cooled by the external environment and lose its fluidity, so that the glass liquid discharge mechanism 10 and the inner wall of the mounting port 22 are bonded together by the glass liquid, thereby achieving the fixation of the glass liquid discharge mechanism 10; in one embodiment, the reserved gap between the mounting port 22 and the glass liquid discharge mechanism 10 is controlled to be between 2 mm and 15 mm, so as to ensure that the glass liquid discharge mechanism 10 will not collide with the mounting port 22 during installation and cause damage.

[0072] See also Figure 2 In one embodiment, the material guide member 100 further includes a first fixing ring 160, a second fixing ring 170 and a fixing portion 180, the inner ring surface of the first fixing ring 160 is connected to the second end 122, the first fixing ring 160 is used to be electrically connected to a power source, the inner ring surface of the second fixing ring 170 is connected to the fourth end 132, the second fixing ring 170 is used to be electrically connected to a power source, the first fixing ring 160 and the second fixing ring 170 are spaced apart in the axial direction of the material guide channel 110 so that an installation area 190 is formed between the first fixing ring 160 and the second fixing ring 170, and the fixing portion 180 is located in the installation area 190 and abuts against the first fixing ring 160 and the second fixing ring 170.

[0073] A first fixing ring 160 is provided at the second end 122, and the first fixing ring 160 is used to be electrically connected to one of the positive and negative electrodes of the power supply. A second fixing ring 170 is provided at the fourth end 132, and the second fixing ring 170 is used to be electrically connected to the other of the positive and negative electrodes of the power supply, so that an electrical circuit is formed between the first fixing ring 160, the first conduit 120, the first conductive ring 140, the second conduit 130, and the second fixing ring 170 and the power supply, and the fixing portion 180 is abutted between the first fixing ring 160 and the second fixing ring 170, so that relative displacement between the first fixing ring 160 and the second fixing ring 170 can be prevented, which may cause deformation between the first conduit 120 and the second conduit 130, thereby improving the overall strength of the glass liquid discharging mechanism 10 and preventing the glass liquid discharging mechanism 10 from being deformed at high temperature and causing local deformation.

[0074] exist Figure 2 In the illustrated embodiment, the first fixing ring 160 is connected to the positive electrode of the power supply, and the second fixing ring 170 is connected to the negative electrode of the power supply. The current of the power supply flows from the positive electrode of the power supply to the first fixing ring 160, passes through the first conduit 120, the first conductive ring 140, the second conduit 130 and the second fixing ring 170, and flows back to the negative electrode of the power supply to form a power-on circuit.

[0075] Specifically, the first fixing ring 160 and the second fixing ring 170 are flange rings respectively arranged at the second end 122 and the fourth end 132. The first fixing ring 160 and the second fixing ring 170 are respectively connected to the positive and negative electrodes of the power supply. The heat generation of the first conduit 120 and the second conduit 130 is controlled by controlling the output voltage, and the process is reliable.

[0076] In one embodiment, the first conduit 120, the second conduit 130, the first conductive ring 140, the first conductive shell, the second conductive shell and the second conductive ring 240 are all made of metals with excellent conductive properties and heat after conduction, such as silver, copper, aluminum, etc.; in one embodiment, since the above-mentioned elements need to operate under high temperature conditions and have good mechanical properties and strength, the first conduit 120, the second conduit 130 and the first conductive ring 140 are all made of precious metals that do not chemically react with the glass liquid and have good mechanical properties to prevent the glass liquid from being contaminated by metal particles and causing quality abnormalities such as refractive index, coloration, and transmittance. Therefore, the first conduit 120, the second conduit 130 and the first conductive ring 140 are made of platinum and its alloy materials in terms of the selection of manufacturing materials; when the working temperature of the material guide 100 is below 1350°C, pure platinum or reinforced platinum is used; when the working temperature of the material is above 1350°C, a platinum-rhodium alloy is used, wherein the rhodium content is less than or equal to 20% (this value is a mass fraction).

[0077] Specifically, when the power source is turned on, the first conduit 120, the second conduit 130, the first conductive ring 140, the conductive outer shell 220, the conductive inner shell 230 and the second conductive ring 240 all generate heat through their own resistance, which will not be described in detail here.

[0078] See also Figure 2 In one embodiment, the material of the fixing portion 180 includes insulating material.

[0079] The fixing portion 180 made of insulating material can not only play an insulating role between the first fixing ring 160 and the second fixing ring 170, but also prevent the first fixing ring 160 and the second fixing ring 170 from being relatively displaced and causing deformation between the first conduit 120 and the second conduit 130, thereby improving the overall strength of the glass liquid discharge mechanism 10 and preventing the glass liquid discharge mechanism 10 from being deformed at high temperature and causing local deformation.

[0080] Specifically, a multi-layer composite material may be selected as the fixing part 180 , wherein the multi-layer composite material includes a high-strength material, an insulating material, and a fireproof material, so as to improve the strength, fireproof performance, and insulation performance of the fixing part 180 .

[0081] Furthermore, the first fixing ring 160 and the second fixing ring 170 are parallel to each other and are arranged at intervals along the axial direction of the material guiding channel 110. The fixing portion 180 is a stabilizing ring. The two side surfaces of the stabilizing ring are respectively in contact with the first fixing ring 160 and the second fixing ring 170 to prevent relative displacement between the first fixing ring 160 and the second fixing ring 170 and cause deformation between the first conduit 120 and the second conduit 130. In addition, the stabilizing ring can be connected to an external supporting steel structure to reliably fix the position of the lower part of the glass liquid discharging mechanism 10 to ensure that the structure of the glass liquid discharging mechanism 10 is stable without obvious displacement during normal use.

[0082] See also Figure 4 In one embodiment of the present application, at least two material guide members 100 are provided, and accordingly, at least two first conduits 120, first conductive rings 140, second conduits 130, first fixed rings 160 and second fixed rings 170 are provided and correspond one to one with the number of material guide members 100, and the material guide channels 110 of all material guide members 100 are connected in sequence. In this way, at least two energized circuits can be realized to achieve zoned precise temperature control during material guiding, thereby improving the flow stability of the molten glass during the discharge process.

[0083] Based on the glass liquid discharging mechanism 10 in the above embodiment, a discharging method for improving the quality of glass after forming is provided. The method comprises the following steps:

[0084] S1. Before discharging the molten glass from the molten glass pool 20, the molten glass in the molten glass pool 20 has completed various process flows, and the overall temperature of the molten glass has reached the temperature required by the molding process, thus meeting the molding conditions. At the same time, it is confirmed that the upper and lower parts of the guide member 100 of the molten glass discharging mechanism 10 are reliably supported and fixed, and the glass molding mechanism 30 at the lower part of the molten glass discharging mechanism 10 has completed the preparation work.

[0085] S2. Conduct a power-on test on the first fixing ring 160 and the second fixing ring 170. During the test, set the power supply current control opening to about 5%-10%, and observe the power-on status of the glass liquid discharge mechanism 10 and the temperature change of the glass liquid discharge mechanism 10 fed back by the control instrument; then continue to increase the current, and start heat preservation when the temperature of the second guide tube 130 rises to the temperature range required by the process.

[0086] S3. During the heat preservation process of the glass liquid discharging mechanism 10, the glass liquid in the second conduit 130 and its material guiding channel 110 establishes thermal equilibrium, and the viscosity of the glass in the material guiding channel 110 decreases rapidly to become a flowing state; when the glass at the outlet of the material guiding channel 110 moves slightly downward, the local temperature at the outlet of the material guiding channel 110 can be quickly increased by local auxiliary heating to realize the flow of the glass liquid in the material guiding channel 110.

[0087] (4) When the glass liquid in the material guiding channel 110 starts to flow, the middle and upper layers of high-quality glass liquid in the melting pool 20 enter the conductive inner shell 230 through the feed port 210, and then flow into the glass forming mechanism 30 from the outlet of the material guiding channel 110 through the second conduit 130, and form a molded glass of a desired shape in the glass forming mechanism 30.

[0088] (5) After the molding work is completed, the current output of the power supply is reduced to rapidly cool the second conduit 130 , thereby increasing the viscosity of the glass liquid in the material guide channel 110 , and eventually the glass liquid loses fluidity and waits to enter the next round of production process.

[0089] In the glass production process, the above discharging method can achieve a large flow rate of glass liquid discharging of more than 50L / h, for example, the glass flow rate is 50L / h to 1000L / h; when the continuous strip drawing molding method is adopted, the glass flow rate range is 80L / h to 200L / h; when the single block casting molding method is adopted, the glass flow rate range is 300L / h to 1000L / h.

[0090] By adopting the above discharging method, the glass liquid in the guide channel 110 can flow when its viscosity is in the range of 10 poise to 5000 poise. During this process, the temperature of the inner conduit is controlled. In one embodiment, the viscosity of the glass liquid is in the range of 10 poise to 2000 poise.

[0091] By adopting the above discharging method, when the temperature of the flowing molten glass in the guide channel 110 is controlled at 1200° C. to 1500° C., the molten glass discharging mechanism 10 can be used stably for a long time.

[0092] The above discharging method is particularly suitable for the discharging process control of glass block products with a diameter exceeding 500 mm, and is particularly suitable for the discharging process control of glass block products with a diameter exceeding 1 m.

[0093] As a supplement, the glass liquid discharging mechanism 10 in any of the above embodiments is suitable for discharging glass liquids of conventional optical glass, easy-to-crystallize glass, low-expansion borosilicate glass, low-expansion microcrystalline glass and the like.

[0094] Another embodiment of the present application provides a glass production device, which includes a melting pool 20, a glass forming mechanism 30 and a glass liquid discharge mechanism 10 of any of the above embodiments. The glass liquid discharge mechanism 10 is connected to the melting pool 20 and is used to guide the glass liquid in the melting pool 20 to the glass forming mechanism 30.

[0095] In the above-mentioned glass production device, the glass liquid in the accommodating chamber 21 can pass through the feed port 210 and the material guiding channel 110 in sequence, and finally flow to the glass forming mechanism 30; in this process, the power supply, the first conduit 120, the first conductive ring 140 and the second conduit 130 are electrically connected end to end in sequence, so as to form an electric circuit. When the power supply is energized, the current flows from the second end 122 of the first conduit 120 to the first end 121, and then a part of the current at the first end 121 flows to the second conduit 130 through the first conductive ring 140, so as to electrically heat the first conduit 120 and the second conduit 130, and the first conduit 120 and the second conduit 130 generate heat and heat the glass liquid in the material guiding channel 110. The second conductive ring 240 and the conductive inner shell 230 are used for heating, and the other part of the current will pass through the conductive outer shell 220, the second conductive ring 240 and the conductive inner shell 230 in sequence, and then flow to the second conduit 130. In this way, the current on the transition piece 200 will be much smaller than the current on the first conduit 120, so that the heat generated by the transition piece 200 is much smaller than the heat generated by the first conduit 120, thereby preventing the transition piece 200 from overheating the surrounding glass liquid and causing the surrounding glass liquid temperature to rise sharply; compared with the traditional technology, the above-mentioned glass production device can effectively improve the problem of bubbles in the glass liquid in the melting pool 20 due to the large temperature difference between the transition piece 200 and the surrounding glass liquid, thereby ensuring the quality of the glass after final molding.

[0096] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above 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.

[0097] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A glass liquid discharging mechanism, used to be connected to a mounting port of a melting pool, the melting pool having a receiving cavity for receiving the glass liquid, the mounting port being communicated with the receiving cavity, characterized in that: The glass liquid discharging mechanism comprises: a material guide member, the material guide member comprising a first conduit, a second conduit and a first conductive ring, the first conduit being sleeved on the second conduit, the inner wall of the first conduit being spaced apart from the outer wall of the second conduit, the first conduit having a first end and a second end opposite to each other, the second conduit having a third end and a fourth end opposite to each other, the first end being electrically connected to the third end through the first conductive ring, the second end being used to be electrically connected to a power source, the fourth end being used to be electrically connected to a power source, the second conduit being provided with a material guide channel penetrating the third end and the fourth end, one end of the material guide channel being used to be connected to a glass forming mechanism; and A transition piece, the transition piece includes a conductive outer shell, a conductive inner shell and a second conductive ring, the conductive outer shell and the conductive inner shell are both arranged on a side of the first conductive ring away from the first conduit, the conductive outer shell is sleeved on the conductive inner shell, one end of the conductive outer shell away from the first conductive ring is connected to the outer ring surface of the second conductive ring, one end of the conductive inner shell away from the first conductive ring is connected to the inner ring surface of the second conductive ring, the conductive inner shell is provided with a feed port, and one end of the material guiding channel away from the glass forming mechanism is used to communicate with the accommodating cavity through the feed port.

2. The glass liquid discharging mechanism according to claim 1, characterized in that: The first end is used to be opposite to the inner wall of the installation opening, and the conductive outer shell, the conductive inner shell and the second conductive ring are all used to protrude from the bottom wall of the molten pool and extend into the accommodating cavity.

3. The glass liquid discharging mechanism according to claim 1, characterized in that: The first conduit, the first conductive ring and the second conduit are arranged to form a heat-insulating cavity, the conductive outer shell, the second conductive ring, the conductive inner shell and the first conductive ring are arranged to form an air pressure balance cavity, the first conductive ring is provided with a connecting hole, and the air pressure balance cavity is connected with the heat-insulating cavity through the connecting hole.

4. The glass liquid discharging mechanism according to claim 3, characterized in that: At least two communicating holes are provided and are spaced apart along the circumference of the first conductive ring.

5. The glass liquid discharging mechanism according to claim 3, characterized in that: A first heat-insulating material is arranged in the heat-insulating cavity.

6. The glass liquid discharging mechanism according to claim 3, characterized in that: A second heat-insulating material is arranged in the air pressure balance cavity.

7. The glass liquid discharging mechanism according to claim 1, characterized in that: The outer radius of the second conductive ring is smaller than the outer radius of the first conductive ring.

8. The glass liquid discharging mechanism according to claim 1, characterized in that: The material guide member also includes a first fixing ring, a second fixing ring and a fixing portion, the inner ring surface of the first fixing ring is connected to the second end, the first fixing ring is used to be electrically connected to the power supply, the inner ring surface of the second fixing ring is connected to the fourth end, the second fixing ring is used to be electrically connected to the power supply, the first fixing ring and the second fixing ring are spaced apart in the axial direction of the material guide channel to form an installation area between the first fixing ring and the second fixing ring, and the fixing portion is located in the installation area and abuts against the first fixing ring and the second fixing ring.

9. The glass liquid discharging mechanism according to claim 8, characterized in that: The material of the fixing part includes insulating material.

10. A glass production device, characterized in that: The glass production device includes a melting pool, a glass forming mechanism and a glass liquid discharge mechanism as described in any one of claims 1 to 9, wherein the glass liquid discharge mechanism is connected to the melting pool and is used to guide the glass liquid in the melting pool to the glass forming mechanism.

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