A method for producing a low self-explosion rate large panel ultra-white float glass

Abstract

The application discloses a kind of low self-explosion rate large plate ultra-white float glass production methods, it is related to glass production technical field.The low self-explosion rate large plate ultra-white float glass production method, including the following steps: step one: glass raw materials are melted in melting furnace at high temperature to form uniform glass melt, glass melt is continuously flowed into tin tank;Step two: glass melt floats on the surface of tin liquid in tin tank to form glass ribbon, the glass ribbon is edge-pulled by edge roller, reaches target size, and moves to lifting roller on the outlet end of tin tank and is lifted by lifting roller.The present application sets up carrier, limit rail, through the extrusion and stretching of first arc rail, straight rail, second arc rail, the tin plate is gradually close to or away from the main shaft in the rotating process, after capturing a wide range of tin ash, the rotating range is reduced, and the interference on the surface of tin liquid is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass production, in particular to a large plate ultra-white float glass production method with low self-explosion rate. BACKGROUND

[0002] Large plate glass refers to flat glass products with a size significantly larger than ordinary glass, ultra-white glass is a kind of high-transparency low-iron glass with high light transmittance, low self-explosion rate glass is glass with a self-explosion rate much lower than ordinary glass, in glass production, float glass is a kind of flat glass manufactured by floating molten glass on molten tin, with smooth and flat surface, excellent optical performance, high yield and low cost, therefore, float glass production process is widely used.

[0003] Tin liquid is the core carrier of float forming, its purity, fluidity and oxidation state directly determine the quality of glass forming, in actual production process, tin ash will inevitably be generated on the surface of tin liquid due to the penetration of external air, the contact between tin ash floating on tin liquid and glass is the fundamental reason for tin sticking, after tin ash adheres to the lower surface of glass, it may react with other impurities (such as sulfur and sodium) in subsequent high temperature process (such as annealing), forming tin sulfide. These impurity particles have large difference in thermal expansion coefficient with glass, and will produce local stress concentration when the temperature changes, becoming crack initiation point, significantly increasing the self-explosion risk of glass.

[0004] Therefore, the patent with publication number CN216191882U discloses a device for cleaning tin ash in tin trough slag removal pool, tin ash is blown into tin ash collection box through tin ash drainage motor and tin ash blowing device, realizing sustainable cleaning of tin ash, but the electromagnetic force of tin ash drainage motor is small, only tin ash near the tin ash drainage motor can be guided into the slag removal pool, the effect needs to be improved.

[0005] In actual production process, the cleaning of tin ash floating on tin liquid is particularly important, the gravity and viscous force of glass liquid will directly drive the tin liquid below to flow synchronously to the outlet end, forming a main flow direction traction flow, making tin ash move to the outlet end of the tin trough, therefore, it is necessary to expand the tin ash cleaning range at the outlet end under the premise of reducing turbulence. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a large plate ultra-white float glass production method with low self-explosion rate, which solves the problems of small tin ash cleaning range and turbulence in the cleaning process.

[0007] To achieve the above purpose, the present application is implemented by the following technical scheme: a large plate ultra-white float glass production method with low self-explosion rate, comprising the following steps:

[0008] Step one, melt the glass raw materials in the melting furnace to form a uniform glass melt, and continuously flow the glass melt into the tin trough;

[0009] Step two, the glass melt floats on the surface of the tin liquid in the tin bath to form a glass ribbon, the glass ribbon is edge drawn by the edge roller to reach the target size and moves to the outlet end of the tin bath to be lifted by the lifting roller, so that the glass ribbon is not in contact with the tin liquid before reaching the area between the two ear pools to form a tin removal area, wherein the tin ash generated by the reaction of the tin liquid in the tin bath floats on the surface of the tin liquid and moves to the tin removal area with the glass ribbon, and the tin removal area is provided with a tin removal device for removing the tin ash;

[0010] Step three, the glass ribbon is drawn into the annealing kiln to perform gradient annealing to eliminate internal stress.

[0011] Further, the tin removal device comprises:

[0012] Two main shafts are located at the outlet end of the tin bath close to the ear pool, and a plurality of groups of tin removal plates are arranged on the outer surface of the main shaft along the radial direction thereof, and the rotation of the main shaft can drive the tin removal plates to push the tin ash on the surface of the tin liquid into the ear pool;

[0013] An adjusting mechanism and a limiting rail are arranged outside the main shaft and above the tin removal plates, and the limiting rail is a closed rail track arranged around the tin removal plates, so that the tin removal plates gradually approach the axis of the main shaft during the rotation and tin removal process through the guiding action of the adjusting mechanism and the track constraint of the limiting rail;

[0014] Each group of tin removal plates is composed of a plurality of single plates arranged side by side, and during the process of the tin removal plates gradually approaching the main shaft, the single plates close to the main shaft are lifted to separate from the surface of the tin liquid to reduce the contact area between the tin liquid and the tin removal plates, so that the tin removal plates can reduce the interference with the surface of the tin liquid after capturing a large range of tin ash.

[0015] Further, the adjusting mechanism comprises:

[0016] A spoke extends to the inside of the main shaft at one end, and a carrier is fixedly connected at the other end, a plurality of columns pass through the carrier, and the lower ends of the columns are fixedly connected with the opposite single plates;

[0017] The limiting rail is divided into a first arc rail, a straight rail and a second arc rail, the diameter of the first arc rail is greater than that of the second arc rail, and the straight rail is provided with two groups of connecting portions for connecting the first arc rail and the second arc rail;

[0018] A anti-slip groove is formed on the side of the limiting rail close to the carrier, and a sliding block matched with the anti-slip groove is fixedly arranged at one end of the carrier.

[0019] Further, a vertical raking plate is arranged on one surface of the single plate for raking more tin ash during the process of the tin removal plates gradually approaching the axis of the main shaft.

[0020] Further, the adjusting mechanism further comprises a sliding frame arranged above the carrier, one end of the sliding frame is fixed on the main shaft, the sliding frame sequentially comprises a first straight section, a lifting section and a second straight section from the end away from the main shaft to the end close to the main shaft, the first straight section, the lifting section and the second straight section are through groove structures, and an end plate is fixed on the upper end of the stand after penetrating through the through groove;

[0021] The stand can move along the axial direction and the radial direction of the main shaft on the sliding frame.

[0022] Further, the outer part of the main shaft is close to the lower part and is provided with an outer cylinder, the outer cylinder does not rotate with the main shaft, and the upper surface of the outer cylinder is in contact with the spoke;

[0023] The upper surface of the outer cylinder is provided with a first flat surface, an inclined surface and a second flat surface, the second flat surface is close to the side of the ear pool, and the longitudinal height of the second flat surface is higher than that of the first flat surface, and the inclined surface is provided with two groups of connecting surfaces for connecting the first flat surface and the second flat surface;

[0024] The outer surface of the main shaft is provided with a longitudinal sliding groove matched with the spoke, so that the spoke can be displaced in the axial direction.

[0025] Further, the stand is fixed with a limiting column, the length and width of the limiting column are greater than those of the stand, the inner part of the carrier is provided with a second through groove and a first through groove matched with the stand and the limiting column respectively, the first through groove is lower, the second through groove is upper, and the two are communicated.

[0026] Further, the anti-slip groove is divided into a first arc-shaped groove, an inclined groove and a second arc-shaped groove, which are respectively corresponding to the positions of the first flat surface, the inclined surface and the second flat surface;

[0027] The first arc-shaped groove is located in the inner side of the first arc-shaped rail, the second arc-shaped groove is located in the inner side of the second arc-shaped rail, and the longitudinal height of the second arc-shaped groove is higher than that of the first arc-shaped groove, and the inclined groove is provided with two groups of connecting surfaces located at one end of the first arc-shaped rail and the second arc-shaped rail respectively for connecting the second arc-shaped groove and the first arc-shaped groove.

[0028] Further, the upper surface of the main shaft is fixedly connected with a middle shaft, and the outer part of the main shaft is rotatably connected with a first mounting frame close to the upper part, the first mounting frame is fixed on the ear pool through an I-shaped steel, the upper surface of the first mounting frame is mounted with a second mounting frame, and the second mounting frame is mounted with a driving assembly capable of driving the main shaft to rotate.

[0029] Further, the ear pool is provided with a tin ash collecting box on one side, and the ear pool is provided with a tin ash stopper inside, a flow guide angle is formed between the tin ash stopper and the tin ash collecting box, and the upper surface of the tin ash stopper is higher than the tin liquid surface and the lower surface is lower than the tin liquid surface.

[0030] The present application has the following beneficial effects:

[0031] 1. The low self-explosion rate large plate ultra-white float glass production method sets a carrier, a limiting rail, a sliding frame and a single plate, through extrusion and stretching of a first arc rail, a straight rail and a second arc rail, the tin scraping plate gradually approaches or moves away from the main shaft in the rotating process, after capturing a large range of tin ash, the rotating range is reduced, and in the process of gradually approaching the main shaft, the upright column can slide from the first flat section to the second flat section through the lifting section, so that the single plate close to the main shaft is lifted and separated from the tin liquid surface, achieving the purpose of cleaning the tin ash on the tin liquid surface to the maximum extent and interfering with the tin liquid to the minimum extent.

[0032] 2. The low self-explosion rate large plate ultra-white float glass production method sets an outer cylinder, so that when the tin scraping plate enters the ear pool, the inclined surface lifts the spoke from the first flat surface to the second flat surface, the tin scraping plate as a whole rises, all single plates above the ear pool are separated from the tin liquid, avoiding the situation that the accumulated tin ash adheres to the surface of the tin scraping plate and is brought back to the tin bath with the rotation of the tin scraping plate, ensuring that the tin scraping plate remains clean in the case of long-term work.

[0033] Of course, implementing any product of the present application does not necessarily require achieving all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The process flow chart of the present application;

[0035] Figure 2 The installation position diagram of the tin scraping device of the present application;

[0036] Figure 3 The cross-sectional view of the tin scraping device of the present application;

[0037] Figure 4 The installation schematic diagram of the tin scraping device of the present application;

[0038] Figure 5 The exploded view of the tin scraping device of the present application;

[0039] Figure 6 The schematic diagram of the main shaft and the outer cylinder of the present application;

[0040] Figure 7 The exploded view of the main shaft and the outer cylinder of the present application;

[0041] Figure 8 The exploded view of the adjusting mechanism of the present application;

[0042] Figure 9 The enlarged view of area A of Figure 3 The enlarged view of area B of

[0043] Figure 10 The enlarged view of area B of Figure 4 The enlarged view of area B of

[0044] Figure 11 A schematic diagram of the working state of the tin scraping plate of the present application;

[0045] Figure 12 A zoomed-in view of the C region of Figure 5

[0046] In the figure, 1, sealing wall; 2, lifting roller; 3, tin tank; 31, ear pool; 32, tin ash collecting box; 4, main shaft; 41, middle shaft; 42, longitudinal sliding groove; 5, driving assembly; 51, first bevel gear; 52, second bevel gear; 53, first gear; 54, second gear; 55, chain wheel; 56, chain; 6, adjusting mechanism; 61, stand column; 62, carrier frame; 621, first through groove; 622, second through groove; 63, sliding block; 64, sliding carrier; 641, first flat section; 642, lifting section; 643, second flat section; 65, end plate; 66, limiting column; 67, spoke; 68, reinforcing frame; 7, limiting rail; 71, first arc rail; 72, straight rail; 73, second arc rail; 74, anti-slip sliding groove; 741, first arc groove; 742, inclined groove; 743, second arc groove; 8, outer cylinder; 81, first flat surface; 82, inclined surface; 83, second flat surface; 10, first mounting frame; 11, second mounting frame; 12, tin ash stopper; 13, tin scraping plate. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0048] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0049] The low self-explosion rate large plate ultra-white float glass production method provided by the embodiments of the present application will be described below according to Figures 1-12 The low self-explosion rate large plate ultra-white float glass production method provided by the embodiments of the present application will be described below according to

[0050] Please refer to Figures 1-12 The low self-explosion rate large plate ultra-white float glass production method provided by the embodiments of the present application will be described below according to

[0051] ​Step one, the glass raw materials are melted in a melting furnace to form a uniform glass melt, and the glass melt is continuously flowed into a tin bath 3;

[0052] Step two, the glass melt is floated on the surface of the tin liquid in the tin bath 3 to form a glass ribbon, the glass ribbon is edge-rolled by an edge roller to reach the target size, and is moved to the outlet end of the tin bath 3 to be lifted by a lifting roller 2, so that the glass ribbon is not in contact with the tin liquid before reaching the area between the two ear pools 31 to form a tin stripping area, wherein the tin ash generated by the reaction of the tin liquid in the tin bath 3 is floated on the surface of the tin liquid and moves to the tin stripping area with the glass ribbon, and the ear pool 31 has a tin stripping device for stripping the tin ash;

[0053] Step three, the glass ribbon is drawn into an annealing furnace for gradient annealing to eliminate internal stress.

[0054] Please refer to Figures 3-5 and Figure 10 , the tin stripping device includes two main shafts 4, the main shafts 4 are located at the outlet end of the tin bath 3 close to the ear pools 31, a middle shaft 41 is fixedly connected to the upper surface of the main shaft 4, a first mounting frame 10 is rotatably connected to the outer portion of the main shaft 4, the first mounting frame 10 is fixed to the ear pool 31 by an I-beam, and a plurality of groups of tin stripping plates 13 are arranged on the outer surface of the main shaft 4 along the radial direction of the main shaft 4, each group of tin stripping plates 13 is composed of a plurality of single plates arranged side by side, and the rotation of the main shaft 4 can drive the tin stripping plates 13 to push the tin ash on the surface of the tin liquid into the ear pool 31, a tin ash collecting box 32 is arranged on one side of the ear pool 31, and a tin ash stopping piece 12 is arranged inside the ear pool 31, a flow guide included angle is formed between the tin ash stopping piece 12 and the tin ash collecting box 32, the tin ash stopping piece 12 can prevent the tin ash in the ear pool 31 from entering the tin bath 3 again, and the tin ash in the ear pool 31 can enter the tin ash collecting box 32 along the flow guide included angle, thereby achieving the collection of the tin ash.

[0055] Preferably, the upper surface of the tin ash stopping piece 12 is higher than the surface of the tin liquid, and the lower surface of the tin ash stopping piece 12 is lower than the surface of the tin liquid, which can effectively prevent the tin ash floating on the surface of the tin liquid and does not affect the backflow of the tin liquid.

[0056] Further, in order to realize the collection of the tin ash collecting box 32, the connecting groove between the ear pool 31 and the tin ash collecting box 32 is arranged at the same height as the surface of the tin liquid, the tin ash floating on the surface of the tin liquid enters the tin ash collecting box 32 from the ear pool 31 through the connecting groove, and the bottom of the tin ash collecting box 32 is lower than the connecting groove, so as to avoid the backflow of the tin ash in the tin ash collecting box 32 to the ear pool 31.

[0057] In addition, a sealing wall 1 is arranged outside the tin bath 3 to seal the tin bath 3 to avoid the contact of the tin liquid with air.

[0058] Please refer to Figures 2-5 and Figure 8 and Figure 9, in order to make the tin plate 13 gradually close to the spindle 4 axis direction in the process of rotation, make tin plate 13 after capture large range tin ash, reduce the rotation range, reduce its to tin liquid surface interference, also set up adjustment mechanism 6, adjustment mechanism 6 is located outside the spindle 4, and located above the tin plate 13, adjustment mechanism 6 includes spoke 67, spoke 67 one end extends to the spindle 4 inside, the other end is fixedly connected with carrier 62, carrier 62 is through a plurality of column 61, the lower end of column 61 is connected with the opposite monomer plate, carrier 62 rotation can drive tin plate 13 rotation, at the same time, carrier 62 close to or away from the spindle 4 can change the range of tin plate 13 capture tin ash.

[0059] In order to realize the carrier 62 close to or away from the spindle 4, here sets up limit rail 7, limit rail 7 is located in the closed track of tin plate 13 periphery, limit rail 7 is located outside the tin plate 13, through the I-beam fixed in the ear pool 31, divided into first arc rail 71, straight rail 72, second arc rail 73, the diameter of first arc rail 71 is greater than the diameter of second arc rail 73, straight rail 72 is provided with two groups for connecting first arc rail 71 and second arc rail 73, carrier 62 in the first arc rail 71 area with the radius of first arc rail 71 rotation, through the adjustment radius of straight rail 72 to the second arc rail 73 area, and with the radius of second arc rail 73 rotation, again through the adjustment radius of straight rail 72 to the first arc rail 71 area, reciprocating, realize carrier 62 close to or away from the spindle 4, namely the change of tin plate 13 rotation range.

[0060] In order to make the carrier 62 can always close to limit rail 7 movement, limit rail 7 close to the one side of carrier 62 is provided with anti slip groove 74, one end of carrier 62 is fixedly provided with the sliding block 63 matched with anti slip groove 74, sliding block 63 is spherical structure or T structure, anti slip groove 74 is arc or T shape, in the process of carrier 62 rotation, sliding block 63 along anti slip groove 74 sliding, make carrier 62 close to limit rail 7 movement.

[0061] Further, in order to realize the spoke 67 telescopic, the spindle 4 is provided with transverse sliding groove matched with spoke 67, when tin plate 13 rotation adjusts the radius through straight rail 72, spoke 67 slides in transverse sliding groove, close to or away from the center of spindle 4, realize the stable telescopic of spoke 67.

[0062] Preferably, one surface of monomer plate tin plate is provided with vertical raking plate, for raking more tin ash in the process of tin plate 13 gradually close to the spindle 4 axis direction.

[0063] As Figure 11 Here, six groups of tin plate 13 are taken as an example, four orientations a, b, c, d are set respectively to describe the change of tin plate 13 range.

[0064] The first process: The process of capturing large-scale solder ash is the process of removing solder plate 13 from position a to position b. Solder plate 13 first moves from position a (in...) Figure 11 From the perspective shown, a solder stripping device rotates counterclockwise above and continues to rotate in the area of ​​the first arc-shaped rail 71 with the radius of the first arc-shaped rail 71. At this time, the lower part of all the individual boards of the solder stripping plate 13 is inserted into the molten solder, so that the solder stripping plate 13 first captures a large area of ​​solder dust until the solder stripping plate 13 reaches position b.

[0065] The second process: The process of reducing the interference of the solder stripper 13 on the surface of the molten solder is the process of the solder stripper 13 moving from position b to position c. The solder stripper 13 continues to rotate, the straight rail 72 squeezes the carrier 62, and the spokes 67 enter the main shaft 4, so that the solder stripper 13 gradually moves closer to the axis of the main shaft 4, reducing the rotation radius of the solder stripper 13 and narrowing the rotation range (in fact, during this process, some individual boards close to the main shaft 4 will be lifted, which can also reduce the interference on the surface of the molten solder. The specific lifting will be described in detail below), reducing its interference on the surface of the molten solder until the solder stripper 13 reaches position c, at which point the reduction of the rotation range of the solder stripper 13 is completed;

[0066] The third process: The process of the solder stripper 13 maintaining the required rotation radius is the process of the solder stripper 13 moving from position c to position d. The solder stripper 13 continues to rotate into the area of ​​the second arc-shaped rail 73, and continues to rotate in the area of ​​the second arc-shaped rail 73 with the radius of the second arc-shaped rail 73, rotating stably with the reduced rotation range, until the solder stripper 13 reaches position d (in this process, the entire solder stripper 13 will actually be raised to prevent the solder stripper 13 from pushing the solder ash back into the mainstream solder channel, which will be explained in detail below).

[0067] The fourth process: The reset stage involves the tin stripper 13 moving from position d to position a. The tin stripper 13 continues to rotate, the straight rail 72 pulls the carrier 62, and the spokes 67 are pulled out from the main shaft 4, increasing the rotation radius of the tin stripper 13. This causes the tin stripper 13 to gradually move away from the axis of the main shaft 4 until the tin stripper 13 reaches position a. At this point, the rotation range of the tin stripper 13 is expanded, enabling the tin stripper 13 to capture a large area of ​​tin ash in the new round of tin stripping.

[0068] Please refer to Figures 4-8 and Figure 10, in order to further reduce the contact area between the tin plate 13 and the tin liquid and reduce the interference of the tin plate 13 to the liquid surface in the above-mentioned second process (the process of gradually approaching the main shaft 4 by the tin plate 13), several single plates close to the main shaft 4 are lifted to be separated from the tin liquid surface to reduce the contact area between the tin liquid and the tin plate 13, so as to further reduce the interference of the tin plate 13 to the tin liquid surface after capturing a large range of tin ash. For this purpose, the adjusting mechanism 6 further comprises a sliding frame 64, which is arranged above the carrier frame 62 and one end of the sliding frame 64 is fixed on the main shaft 4. The sliding frame 64 from the end away from the main shaft 4 to the end close to the main shaft 4 is sequentially provided with a first flat section 641, a lifting section 642 and a second flat section 643. The first flat section 641, the lifting section 642 and the second flat section 643 are through groove structures. The end plate 65 is fixedly arranged on the upper end of the stand column 61 after penetrating through the through groove. The stand column 61 can move on the sliding frame 64 in the axial direction of the main shaft 4 and in the radial direction of the main shaft 4.

[0069] It is worth noting that when the spoke 67 does not gradually approach the center of the main shaft 4, all the single plates are opposite to the first flat section 641 above them.

[0070] In the above-mentioned second process, the tin plate 13 gradually approaches the center of the main shaft 4 along with the spoke 67. The several single plates away from the main shaft 4 always move on the first flat section 641. However, the several single plates close to the center of the main shaft 4 gradually pass through the lifting section 642 and enter the second flat section 643, so that the several single plates close to the center of the main shaft 4 are lifted to be separated from the tin liquid surface and reduce the interference to the tin liquid surface (in this embodiment, refer to Figure 6 , three single plates are lifted).

[0071] Therefore, in the process of gradually approaching the main shaft 4 by the tin plate 13, the stand column 61 can slide from the through groove of the first flat section 641 to the through groove of the second flat section 643 through the lifting section 642. The second flat section 643 is higher than the first flat section 641, so that the single plates close to the main shaft 4 are lifted to be separated from the tin liquid surface.

[0072] It is worth noting that in this embodiment, six groups of tin plates 13 are arranged. The sliding frame 64 of one group of tin plates 13 is not provided with the lifting section 642, so that the single plates of this group of tin plates 13 do not have the lifting action in the above-mentioned second process, so that all the single plates of this group of tin plates 13 are on the tin liquid in the second process, which is used to scrape the tin ash that is not scraped due to the lifting of the single plates of the other five groups of tin plates 13 (because in the second process, the tin ash on the lifted single plates will remain on the tin liquid surface after the lifting of the single plates, so a group of tin plates 13 is needed to make the single plates on the tin plates not to be lifted in the second process).

[0073] Preferably, the density of the tin-scraping plate 13 is much greater than that of the tin liquid, such as tungsten steel, which has high hardness, good wear resistance, high thermal hardness and other advantages, and can maintain good performance in the high-temperature tin bath 3 environment, and the density is greater than that of the tin liquid.

[0074] As Figure 11 Here, taking six groups of tin-scraping plates 13 as an example, four orientations a, b, c, and d are described to describe the change in the lifting state of a single group of tin-scraping plates 13:

[0075] In the above first process, in the process from position a to position b, the tin-scraping plate 13 continuously rotates at the radius of the first arc-shaped rail 71 in the first arc-shaped rail 71 area, and the lower part of all the single plates of the tin-scraping plate 13 is inserted into the tin liquid, so that the tin-scraping plate 13 first captures a large range of tin ash until the tin-scraping plate 13 reaches position b.

[0076] In the above second process, in the process from position b to position c, the straight rail 72 extrudes the carrier 62, so that the tin-scraping plate 13 gradually approaches the axis direction of the main shaft 4, and the column 61 close to the main shaft 4 slides from the through groove of the first flat section 641 to the through groove of the second flat section 643 through the lifting section 642, so that the single plate close to the main shaft 4 is lifted to be separated from the surface of the tin liquid, thereby reducing the contact area between the tin liquid and the tin-scraping plate 13, and reducing the interference of the tin-scraping plate 13 on the surface of the tin liquid, until the tin-scraping plate 13 reaches position c, at which time the lifting of the single plate is completed.

[0077] In the above third process, in the process from position c to position d, the tin-scraping plate 13 continues to rotate and continuously rotates at the radius of the second arc-shaped rail 73 in the second arc-shaped rail 73 area, and the tin-scraping plate 13 continues to rotate in the lifted state until the tin-scraping plate 13 reaches position d.

[0078] In the above fourth process, in the process from position d to position a, the tin-scraping plate 13 continues to rotate, and the straight rail 72 pulls the carrier 62, thereby increasing the radius of rotation of the tin-scraping plate 13, so that the tin-scraping plate 13 gradually moves away from the axis direction of the main shaft 4, and in the process, the column 61 close to the main shaft 4 reversely slides from the through groove of the second flat section 643 to the through groove of the first flat section 641 through the lifting section 642, so that the single plate close to the main shaft 4 is lowered to be inserted into the tin liquid, so that in the next round of tin-scraping work, all the single plates of the tin-scraping plate 13 can be in contact with the tin liquid to capture a large range of tin ash.

[0079] Please refer to Figures 4-8 and Figure 10In order to make the tin scraping plate 13 separate from the tin liquid when entering the ear pool 31, avoid the tin dregs accumulated in the ear pool 31 adhering to the surface of the tin scraping plate 13 and being brought back to the tin tank 3 with the rotation of the tin scraping plate 13, the tin scraping plate 13 is lifted as a whole by lifting the spoke 67 in the third process from the position c to the position d, so that the tin scraping plate 13 separates from the ear pool 31. Specifically, an outer cylinder 8 is arranged outside the main shaft 4 and close to the lower side. The outer cylinder 8 does not rotate with the main shaft 4. The upper surface of the outer cylinder 8 is in contact with the spoke 67. The height of the outer cylinder 8 can control the height of the spoke 67.

[0080] In order to realize the lifting of the spoke 67, the upper surface of the outer cylinder 8 is provided with a first flat surface 81, an inclined surface 82 and a second flat surface 83. The second flat surface 83 is close to the side of the ear pool 31. The height of the second flat surface 83 is higher than that of the first flat surface 81 in the longitudinal direction. The inclined surface 82 is provided with two groups of connecting portions for connecting the first flat surface 81 and the second flat surface 83. When the tin scraping plate 13 approaches the ear pool 31, the spoke 67 rotates to the inclined surface 82. The inclined surface 82 lifts the spoke 67 to the second flat surface 83, so that the carrier 62 rises and pushes the tin scraping plate 13 as a whole to rise. This makes all the single plates above the ear pool 31 separate from the tin liquid and avoid rotating into the ear pool 31, so that the tin dregs accumulated in the ear pool 31 adhere to the surface of the tin scraping plate 13.

[0081] Preferably, after the tin scraping plate 13 rises as a whole, the lower surface of the tin scraping plate 13 is higher than the upper surface of the tin dregs stopper 12, so that the tin scraping plate 13 can rotate over the tin dregs stopper 12 and enter the tin scraping area again.

[0082] In order to facilitate the lifting of the spoke 67, a longitudinal sliding groove 42 matched with the spoke 67 is further arranged on the outer surface of the main shaft 4. The spoke 67 as a whole can axially displace in the main shaft 4.

[0083] In order to strengthen the stability of the spoke 67, a reinforcing frame 68 is further arranged on the sliding bracket 64. The reinforcing frame 68 can support the tin scraping plate 13 when the tin scraping plate 13 scrapes tin in the tin scraping area. The reinforcing frame 68 is provided with a sliding groove consistent with the longitudinal sliding groove 42, so as to facilitate the axial displacement of the spoke 67 as a whole.

[0084] Further, in order to facilitate the lifting of the tin scraping plate 13 as a whole by the carrier 62 and the stable arrangement of the single plates, a limiting column 66 is fixed on the upright column 61. The length and width of the limiting column 66 are greater than those of the upright column 61. The carrier 62 is provided with a second through groove 622 and a first through groove 621 matched with the upright column 61 and the limiting column 66 respectively. The first through groove 621 is below and the second through groove 622 is above. The two are connected. The cross section of the upright column 61 is square. The upright column 61 is matched with the first through groove 621 to guide the upright column 61 to stably and horizontally combine the single plates into the tin scraping plate 13 during the lifting process. The limiting column 66 is matched with the second through groove 622 to limit the lifting of the tin scraping plate 13 as a whole by the carrier 62.

[0085] In order to enable the anti-slip chute 74 to cooperate with the lifting of the carrier 62 to the tin plate 13, the anti-slip chute 74 is divided into a first arc-shaped groove 741, an inclined groove 742 and a second arc-shaped groove 743, which correspond to the first flat surface 81, the inclined surface 82 and the second flat surface 83, respectively. The first arc-shaped groove 741 is located inside the first arc-shaped rail 71, the second arc-shaped groove 743 is located inside the second arc-shaped rail 73, and the longitudinal height of the second arc-shaped groove 743 is higher than that of the first arc-shaped groove 741. The inclined groove 742 is provided with two groups, which are located at one end of the first arc-shaped rail 71 and the second arc-shaped rail 73, respectively, for connecting the second arc-shaped groove 743 and the first arc-shaped groove 741. When the carrier 62 lifts the tin plate 13, the sliding block 63 slides along the inclined groove 742, enters the second arc-shaped groove 743 from the first arc-shaped groove 741, and realizes lifting.

[0086] As Figure 11 Here, taking six groups of tin plates 13 as an example, four orientations a, b, c and d are described to describe the overall lifting state change of all single plates of a single tin plate 13:

[0087] In the above first process, in the process from position a to position b, the tin plate 13 is first at position a. When it continues to rotate, the spoke 67 slides along the inclined surface 82, and the inclined surface 82 transfers it to the first flat surface 81, so that the carrier 62 descends and pushes the overall tin plate 13 to descend, so that the lower part of all single plates rotating to the tin area is inserted into the tin liquid, and the tin plate 13 can capture tin ash. In the process, the sliding block 63 slides along the inclined groove 742 and enters the first arc-shaped groove 741 from the second arc-shaped groove 743, which can cooperate with the descent of the carrier 62. Then the tin plate 13 continues to rotate in the first arc-shaped rail 71 area with the radius of the first arc-shaped rail 71, the spoke 67 always slides on the surface of the first flat surface 81, and the sliding block 63 always slides in the first arc-shaped groove 741;

[0088] In the above second process, in the process from position b to position c, the straight rail 72 extrudes the carrier 62, so that the tin plate 13 gradually approaches the axis direction of the main shaft 4. In the process, the spoke 67 always slides on the surface of the first flat surface 81, and the sliding block 63 always slides in the first arc-shaped groove 741. At this time, the lower part of all single plates of the tin plate 13 is inserted into the tin liquid, so that the tin plate 13 can capture tin ash;

[0089] In the third process, the tin-removing plate 13 continues to rotate into the ear pool 31, the spoke 67 rotates to the inclined surface 82, the inclined surface 82 lifts the spoke 67 to the second flat surface 83, the carrier 62 is lifted, and the whole tin-removing plate 13 is pushed to rise, so that all the single plates above the ear pool 31 are separated from the tin liquid, and are prevented from rotating into the ear pool 31, so that the tin dross accumulated on the surface of the tin-removing plate 13 is brought back to the tin bath 3 with the rotation of the tin-removing plate 13, and in the process, the sliding block 63 moves along the inclined groove 742, enters the second arc-shaped groove 743 from the first arc-shaped groove 741, and can cooperate with the lifting of the carrier 62.

[0090] In the fourth process, the tin-removing plate 13 continues to rotate, and the spoke 67 stably rotates on the second flat surface 83, in the process, the tin-removing plate 13 can pass through the tin dross stopper 12 and re-enter the tin-removing area.

[0091] Please refer to Figure 3 , Figure 4 and Figure 9 , in order to facilitate the rotation of the main shaft 4, a driving assembly 5 is further arranged, the driving assembly 5 comprises a first bevel gear 51, the first bevel gear 51 is fixedly sleeved outside the middle shaft 41, and a second bevel gear 52 is engaged with the first bevel gear 51, a second mounting bracket 11 is mounted on the upper surface of the first mounting bracket 10, the second bevel gear 52 is installed on the second mounting bracket 11 through a rotating shaft, one end of the rotating shaft is sleeved with a first gear 53 after penetrating through the second mounting bracket 11, the first gear 53 is engaged with a second gear 54, the second gear 54 is installed on the second mounting bracket 11 through a rotating shaft, a chain wheel 55 is sleeved on the rotating shaft, and the chain wheel 55 is driven by a chain 56 and a pinch roll.

[0092] Specifically, the pinch roll rotates, drives the rotating shaft of the second gear 54 to rotate through the chain wheel 55 and the chain 56, the second gear 54 rotates to generate meshing force with the first gear 53 to drive the first gear 53 to rotate, and then the second bevel gear 52 rotates to drive the first bevel gear 51 to rotate, so that the middle shaft 41 rotates to drive the main shaft 4 to rotate.

[0093] In use, the glass melt floats on the surface of the tin liquid in the tin bath 3 to form a glass ribbon, the glass ribbon is edge-pulled by the pinch roll to control the size of the glass and move to the outlet end of the tin bath 3 to be lifted by the lifting roller 2, so that the glass ribbon is not in contact with the tin liquid before reaching the area between the two ear pools 31 to form a tin-removing area, the tin dross generated by the reaction of the tin liquid in the tin bath 3 floats on the surface of the tin liquid, moves to the tin-removing area with the glass ribbon, the tin-removing device in the tin-removing area pushes the tin dross moving to the tin-removing area into the ear pool 31, and then enters the tin dross collecting box 32 along the flow guide angle formed between the tin dross stopper 12 and the tin dross collecting box 32 to realize the removal and collection of the tin dross.

[0094] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other presenters can develop. It is also possible, however, that only a single element can be present. It is further noted that such a term as "comprising" is intended to mean that the embodiments include the recited elements, but not excluding other elements. "Consisting essentially of when used herein in relation to a composition, means that the composition includes the recited elements, and can include additional elements, so long as the additional elements do not materially alter the basic and novel properties of the claimed composition. "Consisting of" when used herein in relation to a composition means that the composition includes the recited elements and nothing more.

[0095] The preferred embodiments of the application disclosed above are only to help explain the principles of the present application. The preferred embodiments do not describe all the details of the present application, nor limit the present application to only the specific embodiments described. It is apparent that many modifications and variations can be made to the present application based on the content of the present disclosure. The present disclosure selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A method for producing large sheets of ultra-clear float glass with low spontaneous breakage rate, characterized in that, Includes the following steps: Step 1: The glass raw material is melted at high temperature in the melting furnace to form a uniform glass melt, and the glass melt flows continuously into the tin bath (3). Step 2: In the tin bath (3), the glass melt floats on the surface of the molten tin to form a glass strip. The glass strip is pulled by the edge-pulling roller to achieve the target size and moves to the outlet end of the tin bath (3) to the lifting roller (2) to be lifted by the lifting roller (2). This ensures that the glass strip does not come into contact with the molten tin before reaching the area between the two ear pools (31), forming a tin stripping area. The tin ash produced by the reaction of the molten tin in the tin bath (3) floats on the surface of the molten tin and moves with the glass strip to the tin stripping area. The tin stripping area has a tin stripping device for removing the tin ash. Step 3: The glass ribbon is drawn into the annealing furnace for gradient annealing to eliminate internal stress; The desoldering device includes: Two main shafts (4) are located at the outlet end of the tin bath (3) near the ear pool (31), and multiple sets of tin stripping plates (13) are arranged radially on the outer surface of the main shaft (4). The rotation of the main shaft (4) can drive the tin stripping plates (13) to push the tin ash on the surface of the tin liquid into the ear pool (31). Adjustment mechanism (6) and limiting rail (7), the adjustment mechanism (6) is located outside the main shaft (4) and above the solder stripping plate (13), the limiting rail (7) is a closed track located around the solder stripping plate (13). Through the guiding effect of the adjustment mechanism (6) on the solder stripping plate (13) and the trajectory constraint of the limiting rail (7), the solder stripping plate (13) gradually moves closer to the axis of the main shaft (4) during the rotation of the solder stripping plate. Each set of tin stripping plates (13) is composed of multiple single plates arranged side by side. As the tin stripping plates (13) gradually approach the main shaft (4), the single plates close to the main shaft (4) are lifted to detach from the surface of the molten solder, thereby reducing the contact area between the molten solder and the tin stripping plates (13). This reduces the interference of the tin stripping plates (13) on the surface of the molten solder after capturing a large area of ​​tin dust. The adjustment mechanism (6) includes: Spoke (67), one end of which extends into the interior of the main shaft (4), and the other end is fixedly connected to a carrier (62). Multiple columns (61) pass through the carrier (62), and the lower end of the columns (61) is fixedly connected to the opposite single plate. The limiting rail (7) is divided into a first arc-shaped rail (71), a straight rail (72), and a second arc-shaped rail (73). The diameter of the first arc-shaped rail (71) is larger than the diameter of the second arc-shaped rail (73). The straight rail (72) is provided with two sets for connecting the first arc-shaped rail (71) and the second arc-shaped rail (73). The limiting rail (7) has an anti-slip groove (74) on the side near the carrier (62), and a slider (63) that cooperates with the anti-slip groove (74) is fixed at one end of the carrier (62).

2. The method for producing large-format ultra-clear float glass with low spontaneous breakage rate according to claim 1, characterized in that, A vertical scraper is provided on one surface of the single-piece board for scraping more tin ash as the scraper plate (13) gradually approaches the axis of the main shaft (4).

3. The method for producing large-format ultra-clear float glass with low spontaneous breakage rate according to claim 2, characterized in that, The adjustment mechanism (6) also includes a slide (64), which is located above the carrier (62), and one end of the slide (64) is fixed on the main shaft (4). The slide (64) consists of a first straight section (641), a lifting section (642), and a second straight section (643) from the end away from the main shaft (4) to the end close to the main shaft (4). The first straight section (641), the lifting section (642), and the second straight section (643) are through groove structures. The upper end of the column (61) passes through the through groove and is fixed with an end plate (65). The column (61) is capable of moving axially and radially along the main shaft (4) on the carriage (64).

4. The method for producing large-format ultra-clear float glass with low spontaneous breakage rate according to claim 3, characterized in that, The main shaft (4) is provided with an outer cylinder (8) near the bottom. The outer cylinder (8) does not rotate with the main shaft (4). The upper surface of the outer cylinder (8) is in contact with the spokes (67). The upper surface of the outer cylinder (8) is provided with a first flat surface (81), an inclined surface (82), and a second flat surface (83). The second flat surface (83) is close to the ear canal (31), and the longitudinal height of the second flat surface (83) is higher than that of the first flat surface (81). The inclined surface (82) is provided with two sets for connecting the first flat surface (81) and the second flat surface (83). The outer surface of the main shaft (4) is provided with a longitudinal groove (42) that cooperates with the spokes (67), so that the spokes (67) as a whole can be displaced in the axial direction.

5. The method for producing large-format ultra-clear float glass with low spontaneous breakage rate according to claim 1, characterized in that, A limiting post (66) is fixed on the column (61). The length and width of the limiting post (66) are greater than those of the column (61). The frame (62) has a second through groove (622) and a first through groove (621) that cooperate with the column (61) and the limiting post (66) respectively. The first through groove (621) is at the bottom and the second through groove (622) is at the top, and the two are connected.

6. The method for producing large-format ultra-clear float glass with low spontaneous breakage rate according to claim 4, characterized in that, The anti-slip groove (74) is divided into a first arc groove (741), an inclined groove (742), and a second arc groove (743), which correspond to the positions of the first flat surface (81), the inclined surface (82), and the second flat surface (83), respectively. The first arc groove (741) is located inside the first arc rail (71), the second arc groove (743) is located inside the second arc rail (73), and the longitudinal height of the second arc groove (743) is higher than that of the first arc groove (741). There are two sets of inclined grooves (742), which are located at one end of the first arc rail (71) and the second arc rail (73) respectively, and are used to connect the second arc groove (743) and the first arc groove (741).

7. The method for producing large-format ultra-clear float glass with low spontaneous breakage rate according to claim 1, characterized in that, A central shaft (41) is fixed to the middle of the upper surface of the main shaft (4), and a first mounting bracket (10) is rotatably connected to the outside of the main shaft (4) near the top. The first mounting bracket (10) is fixed to the ear chamber (31) by an I-beam. A second mounting bracket (11) is installed on the upper surface of the first mounting bracket (10), and a drive assembly (5) capable of driving the main shaft (4) to rotate is installed on the second mounting bracket (11).

8. The method for producing large-format ultra-clear float glass with low spontaneous breakage rate according to claim 1, characterized in that, The ear pool (31) is provided with a tin ash collection box (32) on one side, and a tin ash stop (12) is provided inside the ear pool (31). The tin ash stop (12) and the tin ash collection box (32) form a flow guiding angle, and the upper surface of the tin ash stop (12) is higher than the tin liquid surface, and the lower surface is lower than the tin liquid surface.

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