Hopper mechanism and glass product production device

Abstract

The invention discloses a hopper mechanism and a glass product production device, and relates to the technical field of glass production. The hopper mechanism comprises a shell and a discharging hopper. The discharging hopper is arranged in the shell, a receding opening is formed in the bottom of the shell, the discharging hopper is provided with a discharging nozzle, the discharging nozzle comprises a heat preservation section and an exposed section which are connected with each other, the heat preservation section is arranged in the receding opening, the exposed section extends out of the receding opening, and the height of the exposed section ranges from 20 mm to 50 mm. Compared with the prior art, the hopper mechanism provided by the invention has the advantages that the heat preservation section arranged in the abdicating opening and the exposed section extending out of the abdicating opening are adopted, so that the roll sticking risk in the calendering process and the folding mark defect after calendering can be effectively avoided, and the forming quality of glass is ensured.

Description

Technical Field

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

[0002] In the production process of glass products, the general rolling form adopts the combination of traditional lip bricks, side bricks and vertical rolling rollers. This form is prone to problems such as cold material at the edge, crystallization, large thickness difference of glass plate surface, and difficulty in thinning. In order to solve this problem, a horizontal rolling roller structure is provided, which is suitable for the feeding method of vertical downward flow of molten glass. During the rolling process, the molten glass in the hopper falls into the gap between the rollers to form a material beach. Under the extrusion and cooling action of the rollers, a glass ribbon is formed. Under this molding method, the molten glass does not have time and space for cooling and crystallization, so it can effectively avoid the problems of cold material and crystallization of glass at the edge of the side bricks and lip bricks.

[0003] However, the inventors have discovered through experiments that during the rolling process of the glass melt, the phenomenon of roller sticking often occurs, and after the rolling process, quality defects such as fold marks often appear on the obtained glass products. Summary of the invention

[0004] The object of the present invention is to provide a hopper mechanism and a glass product production device, which can effectively avoid the risk of roller sticking during the calendering process and the folding mark defects of the glass product after the calendering is completed, so as to ensure the molding quality of the glass.

[0005] The present invention is achieved by adopting the following technical solutions.

[0006] A hopper mechanism comprises an outer shell and a discharging hopper, wherein the discharging hopper is arranged in the outer shell, a clearance opening is provided at the bottom of the outer shell, the discharging hopper is provided with a discharging nozzle, and the discharging nozzle comprises an insulation section and an exposed section connected to each other, the insulation section is arranged in the clearance opening, and the exposed section extends out of the clearance opening, and the height range of the exposed section is 20 mm to 50 mm.

[0007] Optionally, the discharge nozzle is arranged in a flat shape; the sum of the heights of the insulation section and the exposed section ranges from 2 times to 4 times the orifice width of the discharge nozzle, and / or the orifice length of the discharge nozzle ranges from 2 times to 4 times the orifice width of the discharge nozzle.

[0008] Optionally, the orifice width of the discharge nozzle ranges from 12 mm to 20 mm; the sum of the heights of the insulation section and the exposed section ranges from 24 mm to 80 mm, and / or the orifice length of the discharge nozzle ranges from 24 mm to 80 mm.

[0009] Optionally, the corners of the orifice of the discharge nozzle are rounded.

[0010] Optionally, there are multiple discharge nozzles, and the multiple discharge nozzles are arranged side by side and at intervals on the discharge hopper.

[0011] Optionally, the distance between two adjacent discharge nozzles ranges from 45% to 55% of the orifice length of the discharge nozzle.

[0012] Optionally, the distance between two adjacent discharge nozzles ranges from 12 mm to 40 mm.

[0013] Optionally, a reinforcing rib is provided between two adjacent discharge nozzles.

[0014] Optionally, the hopper mechanism also includes an insulation brick, which is arranged in the outer shell, and the insulation brick is provided with an avoidance groove, which is connected to the give-way port, and the insulation section is arranged in the avoidance groove, and the insulation brick is used to insulate the insulation section.

[0015] Optionally, the hopper mechanism further includes a heat-insulating layer, which is disposed between the outer shell and the discharge hopper.

[0016] A glass product production device includes the above-mentioned hopper mechanism, which includes an outer shell and a discharge hopper, the discharge hopper is arranged in the outer shell, a clearance opening is opened at the bottom of the outer shell, the discharge hopper is provided with a discharge nozzle, and the discharge nozzle includes an insulation section and an exposed section connected to each other, the insulation section is arranged in the clearance opening, and the exposed section extends out of the clearance opening, and the height range of the exposed section is 20 mm to 50 mm.

[0017] The hopper mechanism and glass product production device provided by the present invention have the following beneficial effects:

[0018] The hopper mechanism of the present invention and the glass product production device have a small height difference between the outlet of the exposed section of the discharge nozzle and the gap between the two rollers, which can effectively reduce the falling height of the molten glass, shorten the contact time between the molten glass and the air, avoid the temperature difference between the inside and outside of the molten glass when the molten glass falls to the gap between the two rollers and is stacked, ensure that the molten glass is in a state of relatively uniform temperature before calendering, avoid the folding mark defect of the molten glass after calendering, and at the same time, through the reasonable design of the height of the exposed section in the discharge nozzle, it is possible to effectively prevent the clogging of the molten glass, ensure that the height of the molten glass is in a suitable state, avoid the risk of sticking to the rollers, reduce the difficulty of calendering, and thus ensure the molding quality of the glass products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic structural diagram of a glass product production device provided in a first embodiment of the present invention;

[0021] Figure 2 A schematic structural diagram of a hopper mechanism provided in a first embodiment of the present invention;

[0022] Figure 3 A top view of a discharge hopper in a hopper mechanism provided in the first embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the result of the hopper mechanism provided by the first embodiment of the present invention during the discharging process;

[0024] Figure 5 A mathematical model diagram of a glass melt beach formed in the gap between the rolling rollers when the hopper mechanism according to the first embodiment of the present invention discharges the material;

[0025] Figure 6 A top view of a discharge hopper in a hopper mechanism provided in a second embodiment of the present invention;

[0026] Figure 7 A schematic diagram of the result of the hopper mechanism provided in the second embodiment of the present invention during the discharging process;

[0027] Figure 8 A mathematical model diagram of a glass melt beach formed in the gap between the rolling rollers when the hopper mechanism according to the second embodiment of the present invention discharges the material;

[0028] Fig. 9 A schematic diagram of a glass product having a folding mark quality defect in the prior art;

[0029] Fig.10 This is a schematic diagram of a glass product without folding mark quality defects produced by the present invention.

[0030] Icons: 10-glass product production device; 100-hopper mechanism; 110-housing; 111-gap; 120-discharge hopper; 121-discharge nozzle; 122-insulation section; 123-exposed section; 124-reinforcement ribs; 125-hopper body; 130-insulation bricks; 131-avoidance groove; 140-insulation layer; 200-calendering rollers; 210-gap between rollers; 300-glass melt. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0037] First embodiment

[0038] Please refer to Figure 1The embodiment of the present invention provides a glass product production device 10 for producing glass products. It can effectively avoid the risk of roller sticking during the calendering process and the folding mark defect after the calendering is completed, and ensure the molding quality of the glass products. It should be noted that the glass products include glass and microcrystalline glass.

[0039] The glass product production device 10 includes a liquid supply channel (not shown), a hopper mechanism 100 and a calendering roller pair 200. The liquid supply channel is used to feed the glass melt 300 into the hopper mechanism 100, the hopper mechanism 100 is used to feed the glass melt 300 into the calendering roller pair 200 in a waterfall shape to form a material beach in the roller gap 210 of the calendering roller pair 200, and the calendering roller pair 200 is used to extrude and cool the glass melt 300 to form a glass product.

[0040] See also Figure 2 The hopper mechanism 100 includes a housing 110 and a discharge hopper 120. The discharge hopper 120 is made of platinum material, preferably a platinum-rhodium alloy. In one embodiment, it is preferably 90% platinum and 10% rhodium (by mass ratio), and its overall structure is funnel-shaped. The discharge hopper 120 is disposed in the housing 110, and the discharge hopper 120 is connected to a liquid supply channel, and the liquid supply channel is used to feed the glass melt 300 into the discharge hopper 120. The discharge hopper 120 is provided with a discharge nozzle 121, which is arranged above the calendering rollers 200. The mouth position of the discharge nozzle 121 corresponds to the position of the roller gap 210. The discharge nozzle 121 is used to output the glass melt 300 into the roller gap 210 so that the glass melt 300 forms a material beach in the roller gap 210. The bottom of the shell 110 is provided with a clearance port 111, which is used to make way for the discharge nozzle 121 to avoid affecting the discharge of the glass melt 300.

[0041] See also Figure 3Specifically, the discharge hopper 120 includes a hopper body 125 and a discharge nozzle 121, and the discharge nozzle 121 is arranged at one end of the hopper body 125 close to the calendering roller 200. The length of the discharge nozzle 121 in the vertical direction is 24 mm to 80 mm, that is, 24 mm to 80 mm upward from the bottom of the discharge hopper 120 is the discharge nozzle 121, and the rest is the hopper body 125. In one embodiment, the hopper body 125 and the discharge nozzle 121 can be connected by welding, preferably integrally formed to ensure the airtightness of the connection between the hopper body 125 and the discharge nozzle 121. The shell 110 is a steel structure, and the shape of the shell 110 can be cylindrical or cubic, preferably funnel-shaped, similar to the shape of the discharge hopper 120, and the cross-sectional area of ​​the shell 110 gradually decreases from top to bottom. The housing 110 has an accommodation space for installing the discharge hopper 120 . The hopper body 125 is disposed in the accommodation space of the housing 110 to be surrounded by the housing 110 . The discharge nozzle 121 extends from the clearance opening 111 .

[0042] It is worth noting that there is one discharge nozzle 121, and the discharge nozzle 121 includes a heat preservation section 122 and an exposed section 123 connected to each other. The heat preservation section 122 is connected to the hopper body 125, and the exposed section 123 is arranged on the side of the heat preservation section 122 away from the hopper body 125. The glass melt 300 in the hopper body 125 can flow into the roller gap 210 through the heat preservation section 122 and the exposed section 123 in sequence under the action of gravity. Specifically, the heat preservation section 122 is arranged in the clearance port 111, that is, the heat preservation section 122 is within the coverage of the shell 110. The exposed section 123 is arranged to extend out of the clearance port 111, that is, the exposed section 123 is not within the coverage of the shell 110.

[0043] The inventor has found that the reason why the glass products obtained after the horizontal rolling roller forming method often have quality defects such as fold marks is that the glass melt 300 has a long contact time with the air when it flows out from the discharge port to the roller gap 210, which forms a temperature difference between the surface temperature of the glass melt 300 and the inside, resulting in uneven temperature of the glass melt 300, and a glass melt material beach with a large temperature difference and alternating mixing is formed in the roller gap 210. The uneven temperature will cause uneven viscosity. The greater the viscosity of the glass melt 300, the greater the force required during rolling. After rolling, fold marks are finally formed on the glass product, causing quality defects. In this regard, the present invention is specially designed for the discharge nozzle 121 to solve the problem of fold mark defects. It should be noted that when the device of the present invention is discharging, the hopper body 125 and the discharge nozzle 121 can be electrically heated. After the hopper body 125 and the discharge nozzle 121 are electrically heated, the shell 110 can gather heat to avoid direct heat exchange with air, which plays a certain insulation role. The discharge nozzle 121 is divided into two parts (an insulation section 122 and an exposed section 123) which are connected in sequence. On the one hand, the insulation section 122 arranged in the outer shell 110 cooperates with the outer shell 110 to insulate the glass melt 300 in the insulation section 122, thereby ensuring the temperature stability of the glass melt 300 when it flows into the exposed section 123, and avoiding the temperature difference caused by a large amount of heat loss. On the other hand, the exposed section 123 is extended into the gap 210 between the rollers. Since there is no outer shell 110 to cover it, the volume of the exposed section 123 is smaller, so it can be extended deeper into the gap 210 between the rollers without affecting the normal operation of the calendering rollers 200. Compared with the prior art, In the process, a "U"-shaped insulation material is arranged at the discharge port of the hopper, which causes the volume of the discharge port to become larger, so that the discharge port cannot extend deeper into the gap between the rollers. In the present invention, the height difference between the outlet of the exposed section 123 and the gap 210 of the rollers is small, and the falling height of the glass melt 300 flowing out of the exposed section 123 to the gap 210 of the rollers is small, which can effectively reduce the falling height of the glass melt 300, shorten the contact time of the glass melt 300 with the air, avoid the temperature difference between the inside and outside of the glass melt 300, ensure that the glass melt beach is in a relatively uniform temperature state before calendering, and avoid the folding mark defects (such as Fig. 9 In addition, the phenomenon of sticking to the rollers may occur during the rolling process of the glass melt 300 because the size of the discharge nozzle 121 is not set reasonably, which will result in a large amount of glass melt 300 being retained in the gap 210 between the rollers during the rolling process, and the height of the material beach formed is relatively large, thereby increasing the risk of sticking to the rollers. In this regard, the present invention divides the discharge nozzle 121 into a heat preservation section 122 and an exposed section 123, and reasonably designs the height of the exposed section 123 to ensure that the height of the glass melt beach is in a suitable state, avoid the risk of sticking to the rollers, and effectively prevent the glass melt 300 from being blocked.

[0044] In one embodiment, since no heat preservation measures are provided outside the exposed section 123, heat loss will inevitably occur during the flow of the glass melt 300 in the exposed section 123, resulting in a drop in the temperature of the glass melt 300. In this regard, the height range of the exposed section 123 is set to 20 mm to 50 mm and all ranges and sub-ranges therebetween, such as 25-50 mm, 30-50 mm, 35-50 mm, 40-50 mm, 45-50 mm, 20-45 mm, 20-40 mm, 20-35 mm, 20-30 mm, 20-25 mm, etc. A reasonable height of the exposed section 123 can ensure that the overall temperature drop of the glass melt 300 is within an acceptable range (will not affect the normal calendering of the glass) while minimizing the drop height of the glass melt 300 flowing out of the exposed section 123 to the roller gap 210, so as to minimize the contact time between the glass melt 300 and the air and avoid a large temperature difference between the inside and outside of the glass melt 300.

[0045] In one embodiment, continue to see Figure 2 In order to further insulate the hopper body 120, the hopper mechanism 100 further includes an insulation brick 130 and an insulation layer 140. The insulation layer 140 is disposed between the outer shell 110 and the discharge hopper 120. The insulation layer 140 is used to achieve the functions of heat preservation, heat insulation and insulation, reduce the heat loss of the glass melt 300 in the discharge hopper 120, and prevent the staff from being scalded or electrically shocked. Further, the insulation brick 130 is disposed in the outer shell 110 and is located at the bottom of the outer shell 110. The height of the insulation brick 130 matches the height of the insulation section 122 to surround the insulation section 122. Specifically, the insulation brick 130 is provided with an avoidance groove 131, the insulation section 122 is arranged in the avoidance groove 131, the avoidance groove 131 is connected with the make way port 111, and the discharge nozzle 121 is arranged through the avoidance groove 131 and the make way port 111 in sequence, wherein the insulation section 122 is arranged in the avoidance groove 131, and the insulation brick 130 is used to insulate the insulation section 122, thereby improving the insulation effect of the insulation section 122 on the glass melt 300; the exposed section 123 is arranged outside the avoidance groove 131, and no insulation brick 130 is arranged outside the exposed section 123, so as to reduce the volume of the exposed section 123, so as to facilitate the exposed section 123 to extend deeper into the gap 210 between the two rollers without affecting the normal operation of the calendering rollers 200.

[0046] Furthermore, the inventors have also found that the unreasonable shape of the discharge nozzle 121 in the prior art will also cause a large amount of molten glass 300 to remain in the gap 210 between the rollers during the calendering process, and the height of the material beach formed is relatively large, thereby causing the molten glass 300 to stick to the rollers during the calendering process. In this regard, the present invention reasonably designs the shape (length, width, height and their proportions) of the discharge nozzle 121 to effectively prevent the molten glass 300 from being blocked, ensure that the height of the material beach is in a suitable state, reduce the risk of sticking to the rollers, and reduce the difficulty of calendering.

[0047] In one embodiment, the heat preservation section 122 of the discharge nozzle 121 is generally terraced, the exposed section 123 is generally cubical, and the orifice of the discharge nozzle 121 (i.e., the orifice of the exposed section 123) is rectangular, and the rectangle has a relatively long long side and a relatively short short side, the length of the long side is the orifice length of the discharge nozzle 121, and the length of the short side is the orifice width of the discharge nozzle 121. The discharge nozzle 121 is used to allow the glass melt 300 to flow downward in the vertical direction, and the length of the discharge nozzle 121 in the vertical direction is the height of the discharge nozzle 121, that is, the sum of the heights of the heat preservation section 122 and the exposed section 123.

[0048] Further, the sum of the heights of the heat preservation section 122 and the exposed section 123 ranges from 2 to 4 times the width of the orifice of the discharge nozzle 121 and all ranges and sub-ranges therebetween, such as 2 to 2.5 times, 2.5 to 3 times, 2 to 3.5 times, 3 to 3.5 times, 3 to 4 times, 3.5 to 4 times, etc. Specifically, the sum of the heights of the heat preservation section 122 and the exposed section 123 ranges from 24 mm to 80 mm, that is, the total height of the discharge nozzle 121 ranges from 24 mm to 80 mm and all ranges and sub-ranges therebetween, such as 30 to 80 mm, 40 to 80 mm, 50 to 80 mm, 60 to 80 mm, 70 to 80 mm, 24 to 70 mm, 30 to 70 mm, 40 to 70 mm, 50 to 70 mm, 60 to 70 mm, 30 to 50 mm, 30 to 70 mm, 40 to 65 mm, etc.

[0049] In one embodiment, the total height of the discharge nozzle 121 ranges from 24 mm to 80 mm, and the total height of the discharge nozzle 121 is approximately 2 to 4 times the width of the orifice. The total height of the discharge nozzle 121 within this range can extend as deeply as possible into the gap between the rollers 210 while ensuring that the glass melt 300 will not be blocked. If the total height of the discharge nozzle 121 is less than 2 times the width of the orifice, the total height of the discharge nozzle 121 is too small and cannot extend deeper into the gap between the rollers 210; if the total height of the discharge nozzle 121 is greater than 4 times the width of the orifice, the total height of the discharge nozzle 121 is too large, and the glass melt 300 is prone to blockage when flowing through the exposed section 123 of the discharge nozzle 121 (there is no heat preservation device at the exposed section 123, and when its height is too large, the temperature of the glass melt 300 will drop too much, and even cold glass will cause blockage).

[0050] In one embodiment, the orifice length of the discharge nozzle 121 ranges from 2 to 4 times the orifice width of the discharge nozzle 121 and all ranges and sub-ranges therebetween, such as 2 to 2.5 times, 2.5 to 3 times, 2 to 3.5 times, 3 to 3.5 times, 3 to 4 times, 3.5 to 4 times, etc. Specifically, while the total height of the discharge nozzle 121 ranges from 24 mm to 80 mm, the orifice length of the discharge nozzle 121 ranges from 24 mm to 80 mm and all ranges and sub-ranges therebetween, such as 30 to 80 mm, 40 to 80 mm, 50 to 80 mm, 60 to 80 mm, 70 to 80 mm, 24 to 70 mm, 30 to 70 mm, 40 to 70 mm, 50 to 70 mm, 60 to 70 mm, 30 to 50 mm, 30 to 70 mm, 40 to 65 mm, etc.

[0051] In one embodiment, the orifice length of the discharge nozzle 121 ranges from 24 mm to 80 mm, and the orifice length of the discharge nozzle 121 is approximately 2 to 4 times the orifice width. The orifice length within this range can ensure that the flow rate of the glass melt 300 supplied along the length direction of the orifice is relatively uniform. If the orifice length is less than 2 times the orifice width, the supplied glass melt 300 will be too concentrated, resulting in a high height of the material beach falling on the roller gap 210, increasing the risk of sticking to the roller; if the orifice length is greater than 4 times the orifice width, the glass melt 300 in the middle will have a fast flow rate (high temperature) and the glass melt 300 on both sides will have a slow flow rate (low temperature, even cold glass) in the orifice length direction, affecting the glass molding quality.

[0052] In one embodiment, while the sum of the heights of the insulation section 122 and the exposed section 123 ranges from 2 to 4 times the orifice width of the discharge nozzle 121 , the orifice length of the discharge nozzle 121 ranges from 2 to 4 times the orifice width of the discharge nozzle 121 . Specifically, the orifice width of the discharge nozzle 121 ranges from 12 mm to 20 mm and all ranges and sub-ranges therebetween, for example, 12-16 mm, 12-17 mm, 12-18 mm, 12-19 mm, 13-16 mm, 13-17 mm, 13-18 mm, 13-19 mm, 14-15 mm, 14-16 mm, 14-17 mm, 14-19 mm, 15-16 mm, 15-17 mm, 15-18 mm, 15-19 mm, 16-17 mm, 16-18 mm, 16-19 mm, 17-18 mm, 17-19 mm, 18-19 mm, etc.

[0053] In one embodiment, the orifice width of the discharge nozzle 121 ranges from 12 mm to 20 mm. A reasonable orifice width can ensure that the glass melt 300 flows out smoothly and prevents the glass melt 300 from being blocked. The orifice width should not be too small. If the orifice width is less than 12 mm, the glass melt 300 is easily blocked at the orifice and cannot flow out smoothly. The orifice width should not be too large. If the orifice width is greater than 20 mm, the flow rate of the glass melt 300 is too large, and the glass melt 300 cannot be retained in the discharge hopper 120, and uniform feeding cannot be achieved.

[0054] In one embodiment, the corners of the orifice of the discharge nozzle 121 are rounded to reduce the friction resistance of the glass melt 300 flowing in the discharge nozzle 121 and improve the smoothness and stability of the flow of the glass melt 300 .

[0055] See also Figure 4 ( Figure 4It is worth noting that in the process of the hopper mechanism 100 delivering the molten glass 300 to the gap 210 between the two rollers, due to the setting of the exposed section 123, the discharge nozzle 121 can extend deeper into the gap 210 between the two rollers without affecting the normal operation of the calendering rollers 200. At this time, the waterfall-like molten glass 300 flowing out of the exposed section 123 flows to the gap 210 between the two rollers. The falling height is relatively small, and the falling height ranges from 10 mm to 20 mm, so that the temperature difference between the inside and outside of the molten glass 300 is small, so that the temperature of the supplied molten glass 300 is uniform, thereby ensuring the molding quality of the glass. Furthermore, the orifice size of the discharge nozzle 121 is designed to be short and wide (the orifice length of the discharge nozzle 121 is small and the orifice width is large), so that the temperature and flow rate of the glass melt 300 at the inner side and middle parts of the orifice are similar, the flow rate is relatively uniform in the length direction of the orifice, and the waterfall-like glass melt 300 flowing out is thick and narrow, with a small surface area, and less heat dissipation during the falling process, which effectively prevents the temperature of the glass melt 300 from dropping too fast. In addition, in the length direction of the orifice of the discharge nozzle 121, the hopper mechanism 100 can be installed on a slide rail and cooperate with a motor to move left and right, and the single-side movement stroke is less than or equal to 20 mm. In this way, when the hopper mechanism 100 has deviations in feeding left and right, it can be adjusted by moving the hopper mechanism 100.

[0056] Compared with the prior art, the hopper mechanism 100 provided by the present invention adopts the heat preservation section 122 arranged in the clearance port 111 and the exposed section 123 extending out of the clearance port 111, and at the same time, by reasonably designing the length, width, height and ratio of the discharge nozzle 121, it can effectively prevent the glass melt 300 from being blocked, ensure that the height of the material beach is in a suitable state, the risk of sticking to the roller is low, the calendering difficulty is low, and it can effectively reduce the falling height of the glass melt 300, shorten the contact time of the glass melt 300 with the air, ensure that the glass melt material beach is in a state of relatively uniform temperature before calendering, avoid the folding mark defect caused by the glass melt 300 after calendering, and ensure the molding quality of the glass. The glass product production device 10 has good product quality and high yield rate.

[0057] Second embodiment

[0058] Please refer to Figures 6 to 8 ( Figure 7 The calendering roller 200 located at the front side is processed in perspective), the embodiment of the present invention provides a hopper mechanism 100. Compared with the first embodiment, the difference of this embodiment is that the number of discharge nozzles 121 is multiple.

[0059] It should be noted that a plurality of discharge nozzles 121 are arranged side by side and at intervals on the discharge hopper 120, and a plurality of discharge nozzles 121 are arranged at intervals along the length direction of the orifice of the discharge nozzle 121, and a plurality of discharge nozzles 121 work together to simultaneously realize the discharge function of the glass melt 300. The feeding of a plurality of discharge nozzles 121 can reduce the height of the material beach in the gap 210 between the rollers, greatly reduce the risk of sticking to the rollers, and reduce the lateral temperature difference of the glass ribbon formed after the rollers, thereby reducing the lateral thickness difference. In this embodiment, the number of the discharge nozzles 121 is two, but it is not limited thereto. In other embodiments, the number of the discharge nozzles 121 can be three or four, and the number of the discharge nozzles 121 is not specifically limited.

[0060] In one embodiment, the discharge hopper 120 is made of platinum material, and reinforcing ribs 124 are provided between the discharge nozzles 121 to improve the strength of the discharge nozzles 121, resist the high temperature creep of platinum, and prevent the discharge nozzles 121 from deforming at high temperatures. In addition, the discharge nozzles 121 can be made of platinum-rhodium alloy material to improve the ability of the discharge nozzles 121 to resist high temperature deformation.

[0061] In one embodiment, the spacing between two adjacent discharge nozzles 121 ranges from 45% to 55% of the orifice length of the discharge nozzle 121 and all ranges and sub-ranges therebetween, such as 45% to 52%, 45% to 50%, 45% to 48%, 48% to 55%, 50% to 55, 52% to 55%, etc., preferably 50%, to ensure that the glass melt 300 falling into the gap 210 between the rollers can form a continuous material beach. In this embodiment, the spacing between two adjacent discharge nozzles 121 ranges from 12 mm to 40 mm. The spacing between two adjacent discharge nozzles 121 should not be too small. If the spacing between two adjacent discharge nozzles 121 is too small, the height of the material beach corresponding to the spacing will be too high, increasing the risk of sticking to the roller; the spacing between two adjacent discharge nozzles 121 should not be too large. If the spacing between two adjacent discharge nozzles 121 is too large, the glass melt 300 falling into the gap 210 between the rollers cannot form a continuous material beach, affecting the molding quality of the glass.

[0062] Please refer to Figure 5 and Figure 8 , compare and analyze the discharge from one discharge nozzle 121 and the discharge from two discharge nozzles 121:

[0063] When one discharge nozzle 121 discharges material, the contact time between the rolling roller 200 and the glass melt 300 is t A =h A / V; where h A is the maximum height of the material beach, and V is the rotation speed of the rolling roller 200. When the two discharge nozzles 121 discharge the material: the contact time between the rolling roller 200 and the glass melt 300 is t A1 =hA1 / V; where h A1 is the maximum height of the material beach, and V is the rotation speed of the calendering roller 200. Since the height of the material beach formed when one discharge nozzle 121 is greater than that when two discharge nozzles 121 are used to discharge material, that is, h A Greater than h A1 It can be seen that when one discharge nozzle 121 discharges material, the glass melt 300 is in contact with the calendering roller 200 for a longer time. The longer the contact time, the higher the roller surface temperature and the greater the risk of roller sticking. Therefore, feeding with multiple discharge nozzles 121 can reduce the height of the material beach in the gap 210 between the rollers, greatly reducing the risk of roller sticking.

[0064] Furthermore, the longer the contact time between the glass melt 300 and the rolling roller 200 is, the lower the temperature of the glass ribbon behind the roller is. The contact time between point A and the glass melt 300 is longer than the contact time between point A1 and the glass melt 300. Therefore, the temperature of the glass ribbon behind the roller T A <T A1 Similarly, since the material beach heights at points B and B1 are similar, the contact time between the molten glass 300 at points B and B1 and the rolling roller 200 is similar, and the temperature of the glass ribbon behind the rollers is almost the same, that is, T B =T B1 In this way, the lateral temperature difference of the glass ribbon ΔT = T B -T A , ΔT1=T B1 -T A1 , due to T A <T A1 , T B =T B1 Therefore, ΔT1<ΔT. The smaller the height of the material beach, the smaller the lateral temperature difference of the glass ribbon.

[0065] Therefore, based on the above analysis, feeding with multiple discharge nozzles 121 can reduce the height of the material beach in the gap 210 between the two rollers, reduce the contact time between the molten glass 300 and the calendering rollers 200, greatly reduce the risk of roller sticking, and also greatly reduce the lateral temperature difference of the glass ribbon.

[0066] In addition, in order to demonstrate the beneficial effects of the present invention, the inventors conducted multiple comparative experiments, and the experimental results are shown in the following table:

[0067]

[0068]

[0069]

[0070] It can be seen from the above table that when the number of discharge nozzles 121 is two, the orifice width of the discharge nozzle 121 ranges from 12 mm to 20 mm, the orifice length of the discharge nozzle 121 ranges from 24 mm to 80 mm, the height of the exposed section 123 ranges from 20 mm to 50 mm, the orifice channel height (the sum of the heights of the insulation section 122 and the exposed section 123) ranges from 2 times to 4 times the orifice width of the discharge nozzle 121, and the orifice length of the discharge nozzle 121 ranges from 2 times to 4 times the orifice width of the discharge nozzle 121. times, the spacing between two adjacent discharge nozzles 121 ranges from 45% to 55% of the orifice length of the discharge nozzle 121, which can effectively prevent the glass melt 300 from being blocked, ensure that the height of the material beach is in a suitable state, reduce the risk of roller sticking, reduce the difficulty of calendering, and effectively reduce the falling height of the glass melt 300, shorten the contact time between the glass melt 300 and the air, avoid the temperature difference between the inside and outside of the glass melt 300, ensure the molding quality of the glass, and have no fish scale folding mark quality defects (please refer to Fig. 9 and Fig.10 ).

[0071] Specifically, it can be seen from the comparison of the experimental examples No. 1 and No. 10 that if the height of the orifice channel is within the range of 2 to 4 times the orifice width of the discharge nozzle 121, the risk of roller sticking is low; if the height of the orifice channel is less than 2 times the orifice width of the discharge nozzle 121, roller sticking is likely to occur. It can be seen from the comparison of the experimental examples No. 1 and No. 11 that if the height of the orifice channel is within the range of 2 to 4 times the orifice width of the discharge nozzle 121, the condensation and blockage of the glass melt 300 is unlikely to occur; if the height of the orifice channel is greater than 4 times the orifice width of the discharge nozzle 121, the condensation and blockage of the glass melt 300 is likely to occur, affecting normal production. From the comparison of the experimental examples No. 1 and No. 7, it can be seen that if the orifice length of the discharge nozzle 121 is within the range of 2 to 4 times the orifice width of the discharge nozzle 121, the risk of roller sticking is low; if the orifice length of the discharge nozzle 121 is less than 2 times the orifice width of the discharge nozzle 121, roller sticking is likely to occur.

[0072] From the comparison of the experimental examples of sequence numbers 1, 4 and 7, it can be seen that if the orifice width of the discharge nozzle 121 is within the range of 12 mm to 20 mm, the glass melt 300 is not likely to be condensed and blocked; if the orifice width of the discharge nozzle 121 is less than 12 mm, the glass melt 300 is likely to be condensed and blocked; if the orifice width of the discharge nozzle 121 is greater than 20 mm, the material beach will be concentrated and the roller sticking phenomenon will occur. From the comparison of the experimental examples of sequence numbers 1, 10 and 14, it can be seen that if the orifice channel height is within the range of 24 mm to 80 mm, the insertion depth of the discharge nozzle 121 is suitable for feeding; if the orifice channel height is less than 24 mm, the discharge nozzle 121 cannot be inserted deeper into the gap 210 between the rollers; if the orifice channel height is greater than 80 mm, the waterfall glass liquid has a large temperature difference between the inside and outside, and the glass after rolling has obvious fish scale folding mark defects, which affects the product quality.

[0073] When the number of discharge nozzles 121 is two or three, it can be seen from the comparison of the experimental examples of serial numbers 1, 5 and 6 that if the orifice spacing is in the range of 45% to 55% of the orifice length, or the orifice spacing is in the range of 12 mm to 40 mm, the risk of roller sticking is low; if the orifice spacing is less than 45% of the orifice length of the discharge nozzle 121, or the orifice spacing is less than 12 mm, roller sticking is likely to occur, affecting normal production; if the orifice spacing is greater than 55% of the orifice length of the discharge nozzle 121, or the orifice spacing is greater than 40 mm, two or three glass strips will be formed on the product, affecting product quality.

[0074] The hopper mechanism 100 provided in the embodiment of the present invention can realize multi-stage stable and uniform feeding. The supplied molten glass 300 converges in the gap 210 between the rollers, and the height of the material beach is small, which is beneficial to reducing the risk of roller sticking and can also reduce the lateral thickness difference of the glass ribbon behind the rollers.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hopper mechanism, characterized in that: It includes an outer shell and a discharge hopper, the discharge hopper is arranged in the outer shell, a clearance opening is opened at the bottom of the outer shell, the discharge hopper is provided with a discharge nozzle, the discharge nozzle includes an insulation section and an exposed section connected to each other, the insulation section is arranged in the clearance opening, the exposed section extends out of the clearance opening, and the height range of the exposed section is 20 mm to 50 mm.

2. The hopper mechanism according to claim 1, characterized in that: The discharge nozzle is arranged in a flat shape; the sum of the heights of the insulation section and the exposed section ranges from 2 times to 4 times the orifice width of the discharge nozzle, and / or the orifice length of the discharge nozzle ranges from 2 times to 4 times the orifice width of the discharge nozzle.

3. The hopper mechanism according to claim 2, characterized in that: The orifice width of the discharge nozzle ranges from 12 mm to 20 mm; the sum of the heights of the insulation section and the exposed section ranges from 24 mm to 80 mm, and / or the orifice length of the discharge nozzle ranges from 24 mm to 80 mm.

4. The hopper mechanism according to claim 2, characterized in that: The corners of the orifice of the discharge nozzle are rounded.

5. The hopper mechanism according to claim 2, characterized in that: The number of the discharge nozzles is multiple, and the multiple discharge nozzles are arranged side by side and at intervals on the discharge hopper.

6. The hopper mechanism according to claim 5, characterized in that: The distance between two adjacent discharge nozzles ranges from 45% to 55% of the orifice length of the discharge nozzle.

7. The hopper mechanism according to claim 6, characterized in that: The distance between two adjacent discharge nozzles ranges from 12 mm to 40 mm.

8. The hopper mechanism according to claim 5, characterized in that: A reinforcing rib is arranged between two adjacent discharge nozzles.

9. The hopper mechanism according to claim 1, characterized in that: The hopper mechanism also includes an insulation brick, which is arranged in the shell and has an avoidance groove, which is connected to the give-way port. The insulation section is arranged in the avoidance groove, and the insulation brick is used to insulate the insulation section.

10. The hopper mechanism according to claim 1, characterized in that: The hopper mechanism further comprises a heat-insulating layer, and the heat-insulating layer is arranged between the shell and the discharge hopper.

11. A glass product production device, characterized in that: Comprising a hopper mechanism as described in any one of claims 1 to 10.

Images