Stirring rod, molten glass stirring device and molten glass stirring method

Abstract

The present invention relates to the technical field of glass production, and discloses a stirring rod, a molten glass stirring device, and a stirring method for molten glass. The stirring rod comprises a stirring shaft, at least one horizontal stirring piece, and at least one vertical stirring piece, wherein the horizontal stirring piece and the vertical stirring piece are fixedly connected to the stirring shaft and are alternately arranged along the axial direction of the stirring shaft, wherein the horizontal stirring piece is used to cut the molten glass along the radial direction of the stirring shaft, and the vertical stirring piece is used to stir the molten glass along the radial direction of the stirring shaft. The stirring rod, the molten glass stirring device, and the stirring method for molten glass provided by the present invention can be used to stir molten glass, and can improve the stirring and homogenizing effect of molten glass.

Description

Technical Field

[0001] The invention relates to the technical field of glass production, and in particular to a stirring rod, a molten glass stirring device and a molten glass stirring method. Background Art

[0002] Glass is an amorphous inorganic non-metallic material, which is generally made of a variety of inorganic minerals as the main raw materials, and a small amount of auxiliary raw materials. The process steps of glass production mainly include: preparing batch materials, melting batch materials, clarifying, stirring and homogenizing, modulating, and then hot forming to obtain finished glass products. Among them, the stirring and homogenizing process is to stir the molten glass through a stirring device to achieve a high degree of uniformity in the chemical composition and temperature of the molten glass, so as to form high-quality glass with fewer inclusions and streaks.

[0003] Traditional stirring devices usually use multiple staggered stirring rods for stirring, which have poor stirring effect and are prone to problems such as uneven stirring, resulting in poor homogenization of the glass in the molten state, making the produced glass prone to defects. Summary of the invention

[0004] The object of the present invention is to provide a stirring rod, a molten glass stirring device and a molten glass stirring method to solve the technical problem of poor stirring effect and homogenization effect of molten glass in the related art.

[0005] To solve the above problems, in the first aspect, the present invention provides a stirring rod, comprising a stirring shaft, at least one horizontal stirring member and at least one vertical stirring member, wherein the horizontal stirring member and the vertical stirring member are fixedly connected to the stirring shaft and are alternately arranged along the axial direction of the stirring shaft, the horizontal stirring member is used to cut the molten glass along the radial direction of the stirring shaft, and the vertical stirring member is used to stir the molten glass along the radial direction of the stirring shaft.

[0006] Furthermore, the horizontal stirring member includes a plurality of first blades uniformly distributed along the circumference of the stirring shaft, the first blades are extended along the radial direction of the stirring shaft, and a feeding gap is formed between two adjacent first blades, and the first blades are used to cut the molten glass; the vertical stirring member includes a plurality of second blades uniformly distributed along the circumference of the stirring shaft, the second blades include relative fixed ends and free ends, wherein the fixed end is connected to the stirring shaft, the free end extends in a direction away from the stirring shaft, and the fixed end and the free end both extend along the axial direction of the stirring shaft, and the second blades are used to stir the molten glass.

[0007] Furthermore, a hollow groove is provided on the first blade, and the hollow groove divides the first blade into two branch blades, and the two branch blades are connected at one end away from the stirring shaft.

[0008] Furthermore, the thickness of the second blade gradually increases from the free end to the fixed end.

[0009] Furthermore, the horizontal stirring element also includes a first sleeve portion sleeved on the stirring shaft, and the first blade is fixedly arranged on the circumference of the first sleeve portion; the vertical stirring element also includes a second sleeve portion, and the second blade is fixedly arranged on the circumference of the second sleeve portion.

[0010] Furthermore, the first sleeve portion and the second sleeve portion are both formed with connecting key grooves that can be engaged with each other, and the adjacent horizontal stirring members and the vertical stirring members are mutually engaged through the connecting key grooves.

[0011] Furthermore, a positioning plate is welded to one end of the stirring shaft, and a positioning key slot is formed on the positioning plate which can be engaged with the connecting key slot, and the horizontal stirring piece or the vertical stirring piece is clamped on the positioning plate; the horizontal stirring piece or the vertical stirring piece arranged at one end away from the positioning plate is stamped and connected to the stirring shaft.

[0012] Furthermore, the axial cross-section of the stirring shaft is a regular polygon.

[0013] Furthermore, the stirring shaft is a hollow shaft, and a sealing plate is welded to the end of the stirring shaft.

[0014] The stirring rod provided by the present invention comprises a stirring shaft, a horizontal stirring piece and a vertical stirring piece, and the horizontal stirring piece and the vertical stirring piece are fixedly connected to the stirring shaft, so that the horizontal stirring piece and the vertical stirring piece can be driven to rotate together by rotating the stirring shaft. In the process of rotating the horizontal stirring piece, the molten glass can be cut along the radial direction of the stirring shaft, so that the molten glass flowing along the axial direction of the stirring shaft is distributed in the form of thin sheets, thereby effectively promoting the stratification and separation of the molten glass; in the process of rotating the vertical stirring piece, the molten glass can be stirred along the radial direction of the stirring shaft, and the molten glass can be pushed to flow around and above and below the vertical stirring piece, thereby effectively promoting the fusion of the molten glass. The stirring rod provided by the present invention can effectively promote the separation and fusion of the molten glass by simultaneously arranging the horizontal stirring piece and the vertical stirring piece on the stirring shaft, thereby effectively improving the stirring effect of the stirring rod and the homogenization effect of the molten glass, and avoiding defects in the molded glass due to uneven stirring.

[0015] In a second aspect, the present invention further provides a molten glass stirring device, comprising a stirring tank and the stirring rod according to the first aspect, wherein a feeding port is provided on the tank wall of the stirring tank, and the stirring rod is rotatably inserted into the stirring tank along the depth direction of the stirring tank. Furthermore, raised dots are formed on the inner surface of the tank wall of the stirring tank.

[0016] Furthermore, the stirring tank also includes an upper port and a cover plate arranged on the upper port, the cover plate is provided with a through hole, the stirring rod is inserted into the stirring tank through the through hole, and there is a gap between the stirring rod and the inner wall of the through hole.

[0017] Furthermore, the feed inlet is arranged on the tank wall of the stirring tank, and a gas accommodating space is formed between the feed inlet and the upper port of the stirring tank.

[0018] The molten glass stirring device provided by the present invention has a stirring rod that is rotatably inserted into the stirring tank along the depth direction of the stirring tank, and when the stirring rod rotates, the molten glass entering the stirring tank can be stirred. Since the stirring rod includes a stirring shaft, a horizontal stirring piece and a vertical stirring piece, and the horizontal stirring piece and the vertical stirring piece are fixedly connected to the stirring shaft, rotating the stirring shaft can drive the horizontal stirring piece and the vertical stirring piece to rotate together. Among them, during the rotation of the horizontal stirring piece, the molten glass can be cut along the radial direction of the stirring shaft, so that the molten glass flowing along the axial direction of the stirring shaft is distributed in a thin sheet shape, thereby effectively promoting the stratification and separation of the molten glass in the stirring tank; during the rotation of the vertical stirring piece, the molten glass can be stirred along the radial direction of the stirring shaft, and the molten glass is pushed to flow toward the surrounding groove walls, the upper and lower parts of the vertical stirring piece, thereby effectively promoting the fusion of the molten glass in the stirring tank. The molten glass stirring device provided by the present invention can effectively promote the separation and fusion of the molten glass by simultaneously arranging the horizontal stirring piece and the vertical stirring piece on the stirring shaft, thereby effectively improving the stirring effect of the stirring rod and the homogenization effect of the molten glass, and avoiding defects in the formed glass due to uneven stirring.

[0019] In a third aspect, the present invention provides a method for stirring molten glass, wherein the molten glass is stirred using the molten glass stirring device according to the second aspect, and the stirring method comprises the following steps:

[0020] introducing the molten glass into the molten glass stirring device;

[0021] The molten glass is stirred by the stirring rod, wherein the horizontal stirring piece is rotated to cut the molten glass in the radial direction of the stirring shaft; and the vertical stirring piece is rotated to stir the molten glass in the radial direction of the stirring shaft.

[0022] Furthermore, the liquid level of the molten glass is not lower than the height of the upper edge of the feed port.

[0023] When the molten glass is stirred by the above method, the horizontal stirring piece can be used to cut the molten glass along the radial direction of the stirring shaft, so that the molten glass flowing along the axial direction of the stirring shaft is distributed in thin sheets, thereby effectively promoting the stratification and separation of the molten glass in the stirring tank; the vertical stirring piece can be used to stir the molten glass along the radial direction of the stirring shaft and push the molten glass to flow in all directions, thereby effectively promoting the fusion of the molten glass in the stirring tank. The above molten glass stirring method uses the horizontal stirring piece and the vertical stirring piece to stir the molten glass at the same time, which can effectively promote the separation and fusion of the molten glass, thereby effectively improving the homogenization effect of the molten glass and avoiding defects in the formed glass due to uneven stirring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of a stirring tank in a molten glass stirring device shown;

[0027] Figure 3 for Figure 1 One of the structural schematic diagrams of the stirring rod in the molten glass stirring device shown;

[0028] Figure 4 for Figure 1 The second structural schematic diagram of the stirring rod in the molten glass stirring device shown;

[0029] Figure 5 for Figure 3 A schematic diagram of the structure of a stirring shaft in the stirring rod shown;

[0030] Figure 6 for Figure 3 One of the structural schematic diagrams of the horizontal stirring member in the stirring rod shown;

[0031] Figure 7 for Figure 3 The second structural schematic diagram of the horizontal stirring member in the stirring rod shown;

[0032] Figure 8 for Figure 3 A schematic diagram of the structure of a vertical stirring member in the stirring rod shown;

[0033] Fig. 9 for Figure 3 A schematic diagram of the structure of the positioning support plate in the stirring rod shown;

[0034] Fig.10 for Figure 3 A schematic diagram of the structure of the sealing plate in the stirring rod shown;

[0035] Fig.11 A schematic diagram of the combined structure of the stirring shaft and the cover plate provided in an embodiment of the present invention;

[0036] Fig.12 A schematic diagram of the structure of a cover plate provided in an embodiment of the present invention;

[0037] Fig.13 This is a flow chart of a molten glass stirring method provided in an embodiment of the present invention.

[0038] The meanings of the marks in the figure are:

[0039] 100. Molten glass stirring device;

[0040] 10. stirring tank; 11. feeding port; 12. discharging port; 13. raised dots; 14. upper port; 15. cover plate; 16. through hole;

[0041] 20. stirring rod; 21. stirring shaft; 22. horizontal stirring element; 23. vertical stirring element; 24. positioning support plate; 25. sealing plate; 201. connecting keyway; 202. stamping plate; 221. first blade; 222. feeding gap; 223. hollow groove; 224. first sleeve connection; 231. second blade; 232. second sleeve connection; 241. positioning keyway. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings, i.e., embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component. The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the patent. The terms "first" and "second" are only for convenience of description purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0044] In a first aspect, an embodiment of the present invention provides a stirring rod. As Figure 1 and Figure 3 shown, the stirring rod 20 includes a stirring shaft 21, at least one horizontal stirring member 22 and at least one vertical stirring member 23. The horizontal stirring member 22 and the vertical stirring member 23 are fixedly connected to the stirring shaft 21 and are alternately arranged along the axial direction of the stirring shaft 21. The horizontal stirring member 22 is used for cutting the molten glass along the radial direction of the stirring shaft 21, and the vertical stirring member 23 is used for stirring the molten glass along the radial direction of the stirring shaft 21.

[0045] The stirring rod 20 provided by the embodiment of the present invention, as Figure 4 and Figure 5 shown, since the stirring rod 20 includes a stirring shaft 21, a horizontal stirring member 22 and a vertical stirring member 23, and the horizontal stirring member 22 and the vertical stirring member 23 are fixedly connected to the stirring shaft 21, thus, rotating the stirring shaft 21 can drive the horizontal stirring member 22 and the vertical stirring member 23 to rotate together. Among them, as Figure 1 and Figure 3 shown, during the rotation of the horizontal stirring member 22, the molten glass can be cut along the radial direction of the stirring shaft 21, so that the molten glass flowing along the axial direction of the stirring shaft 21 is distributed in a thin sheet shape, thereby effectively promoting the stratification and separation of the molten glass; during the rotation of the vertical stirring member 23, the molten glass can be stirred along the radial direction of the stirring shaft 21 and pushed towards the surroundings, as well as above and below the vertical stirring member 23 (for example, as shown by the dotted arrows in Figure 4 ), thereby effectively promoting the fusion of the molten glass. The stirring rod 20 provided by the present invention, by simultaneously arranging the horizontal stirring member 22 and the vertical stirring member 23 on the stirring shaft 21, can effectively promote the separation and fusion of the molten glass, thereby effectively improving the stirring effect of the stirring rod 20 and the homogenization effect of the molten glass, and avoiding defects in the formed glass due to uneven stirring.

[0046] In addition, as Figure 1 and Figure 4 As shown, a plurality of horizontal stirring members 22 and a plurality of vertical stirring members 23 are alternately arranged on the stirring shaft 21, which can repeatedly cut and stir the molten glass in the stirring tank 10 and repeatedly mix the molten glass, thereby further improving the stirring effect of the stirring rod 20 and the homogenization effect of the molten glass.

[0047] In one embodiment provided by the present invention, Figure 6 and Figure 7 As shown, the horizontal stirring member 22 includes a plurality of first blades 221 uniformly distributed along the circumference of the stirring shaft 21. The first blades 221 extend radially along the stirring shaft 21, and a material feeding gap 222 is formed between two adjacent first blades 221. The first blades 221 are used to cut molten glass. When the horizontal stirring member 22 is in use, the molten glass can flow along the axial direction of the stirring shaft 21 through the material feeding gap 222. At the same time, the first blades 221 rotate to cut the molten glass along the radial direction of the stirring shaft 21.

[0048] It should be noted that when the stirring rod 20 is used, Figure 1 As shown, the stirring rod 20 can be installed in the stirring tank 10 to stir the molten glass flowing through the stirring tank 10. When the stirring rod 20 is installed in the stirring tank 10, as shown in FIG. Figure 1 As shown, when the molten glass flows in the stirring tank 10, it needs to pass through the horizontal stirring member 22. Therefore, in order to ensure the flow speed of the molten glass during the stirring process, in an embodiment provided by the present invention, as shown in FIG. Figure 6 and Figure 7 As shown, the first blade 221 is also provided with a hollow groove 223, and the hollow groove 223 divides the first blade 221 into two branch blades (for example Figure 6 As shown in a and b), the two branch blades are connected at one end away from the stirring shaft 21. Figure 1 and Figure 7 As shown, by providing a hollow groove 223 on the first blade 221, the flow area (including the material discharge gap 222 and the hollow groove 223) of the horizontal stirring member 22 can be relatively increased, thereby effectively increasing the flow rate and flow speed of the molten glass, and ensuring that the molten glass can flow normally in the stirring tank 10. In addition, the hollow groove 223 divides the first blade 221 into two branch blades, and the two branch blades are connected at one end away from the stirring shaft 21. This structural design can not only increase the number of cuts of the first blade 221 and improve the cutting effect of the first blade 221, but also ensure the strength of the first blade 221, and effectively avoid deformation or breakage of the first blade 221 at one end away from the stirring shaft 21 during use.

[0049] In one embodiment provided by the present invention, Figure 4 and Figure 8As shown, the vertical stirring member 23 includes a plurality of second blades 231 uniformly distributed along the circumference of the stirring shaft 21. The second blades 231 include opposite fixed ends (e.g. Figure 8 A) and a free end (e.g. Figure 8 The second blade 231 is a vertical stirring member 23, wherein the fixed end is connected to the stirring shaft 21, the free end extends in a direction away from the stirring shaft 21, and both the fixed end and the free end extend along the axial direction of the stirring shaft 21, and the second blade 231 is used to stir the molten glass. When the vertical stirring member 23 is in use, the second blade 231 rotates to stir the molten glass along the radial direction of the stirring shaft 21 and push the molten glass to flow in all directions.

[0050] When the second blade 231 is used to stir the molten glass and push the molten glass to flow in various directions, the second blade 231 will be subject to resistance from the molten glass. To prevent the second blade 231 from breaking during use, in an embodiment provided by the present invention, Figure 8 As shown, from the free end to the fixed end (eg Figure 8 The thickness of the second blade 231 gradually increases as shown by the X arrow in the middle. The second blade 231 with the above structural design can effectively improve the connection strength between the second blade 231 and the stirring shaft 21 by increasing the thickness of the blade at the fixed end, so that it can withstand greater shear stress, thereby effectively preventing the second blade 231 from breaking during the stirring process, improving its reliability, and ensuring that the vertical stirring member 23 can be used normally.

[0051] In order to further improve the stirring effect of the vertical stirring member 23, in an embodiment provided by the present invention, as Figure 8 As shown, the height of the second blade 231 (i.e., the dimension of the second blade 231 in the axial direction of the stirring shaft 21) gradually increases from the fixed end to the free end. With this structural design, the stirring effect of the second blade 231 can be ensured, and a larger space can be left to allow the molten glass to be better mixed. Optionally, the upper and lower end surfaces of the second blade 231 can be concave arc surfaces.

[0052] Optionally, the outer end surface of the free end of the second blade 231 is an arc surface, so that part of the molten glass flows along the upper end of the arc surface toward the top of the second blade 231, part of the molten glass flows along the lower end of the arc surface toward the bottom of the second blade 231, and part of the molten glass flows along the middle of the arc surface toward the surroundings.

[0053] In order to improve the reliability of the stirring rod 20, in one embodiment provided by the present invention, as Figure 4 and Figure 6 As shown, the horizontal stirring member 22 further includes a first sleeve portion 224 sleeved on the stirring shaft 21, and the first blade 221 is fixedly disposed on the peripheral side of the first sleeve portion 224; Figure 4 and Figure 8 As shown, the vertical stirring member 23 also includes a second sleeve portion 232, and the second blade 231 is fixedly arranged on the circumferential side of the second sleeve portion 232. By providing the first sleeve portion 224 and the second sleeve portion 232, the connection strength between the first blade 221 and the second blade 231 and the stirring shaft 21 can be enhanced, and the risk of damage can be effectively reduced. At the same time, the first blade 221 and the second blade 231 are indirectly connected to the stirring shaft 21 by using the first sleeve portion 224 and the second sleeve portion 232. During use, if the connection position of the first blade 221 or the second blade 231 is broken, the stirring shaft 21 will not be deformed or damaged, thereby avoiding the strength of the stirring shaft 21 from being affected, and effectively improving the reliability of the stirring rod 20.

[0054] When the horizontal stirring member 22 includes the first sleeve portion 224 and the vertical stirring member 23 includes the second sleeve portion 232 , the connection method between the horizontal stirring member 22 and the vertical stirring member 23 and the stirring shaft 21 is not unique.

[0055] For example, in one embodiment provided by the present invention, Figure 4 , Figure 6 and Figure 8 As shown, the first sleeve portion 224 and the second sleeve portion 232 are both formed with a connecting keyway 201 that can be engaged, and the adjacent horizontal stirring members 22 and vertical stirring members 23 are mutually engaged through the connecting keyway 201. In this way, when a horizontal stirring member 22 and a vertical stirring member 23 are installed on the stirring shaft 21, the opposite ends of the horizontal stirring member 22 and the vertical stirring member 23 can be fixed to the stirring shaft 21 by means of stamping connection, etc., and the ends close to them are connected together by the connecting keyway 201, so as to achieve the fixing of the horizontal stirring member 22 and the vertical stirring member 23. When a plurality of horizontal stirring members 22 and vertical stirring members 23 are installed on the stirring shaft 21, the horizontal stirring members 22 or the vertical stirring members 23 at the two ends can be fixed to the stirring shaft 21 by means of stamping connection, etc., and the horizontal stirring member 22 and the vertical stirring member 23 in the middle can be connected together by the connecting keyway 201, so as to achieve the fixing of the horizontal stirring member 22 and the vertical stirring member 23. The above-mentioned structural design can ensure that the stirring shaft 21 has high creep strength and tensile strength at the position where the horizontal stirring member 22 and the vertical stirring member 23 are installed, and the stirring shaft 21 can withstand a large load. Therefore, when the stirring shaft 21 drives the horizontal stirring member 22 and the vertical stirring member 23 to rotate together, it is not easy to be deformed or damaged, and the reliability is high.

[0056] Alternatively, in some embodiments, on the premise of ensuring that the stirring shaft 21 can be used normally, the first sleeve portion 224 of the horizontal stirring member 22 and the second sleeve portion 232 of the vertical stirring member 23 can be directly welded to the stirring shaft 21 .

[0057] In one embodiment provided by the present invention, Figure 1 and Figure 3 As shown, a positioning support plate 24 is welded to one end of the stirring shaft 21. Figure 6 and Fig. 9 As shown, the positioning support plate 24 is formed with a positioning key groove 241 that can be engaged with the connecting key groove 201. Figure 3 As shown, the horizontal stirring member 22 disposed at the bottom is clamped on the positioning support plate 24. Under the action of the positioning support plate 24, the positioning key slot 241 and the connecting key slot 201, the horizontal stirring member 22 and the vertical stirring member 23 are fixed to the stirring shaft 21 along the circumference of the stirring shaft 21. During the rotation of the stirring shaft 21, the positioning support plate 24, the horizontal stirring member 22 and the vertical stirring member 23 sleeved on the stirring shaft 21 can be driven to rotate together.

[0058] like Figure 4 As shown, the horizontal stirring member 22 disposed at one end away from the positioning support plate 24 is connected to the stirring shaft 21 by stamping. Figure 5 Indicated by C is the stamping part on the stirring shaft 21. Under the joint action of the positioning support plate 24 and the stamping connection structure, the horizontal stirring member 22 and the vertical stirring member 23 are fixed to the stirring shaft 21 along the axial direction of the stirring shaft 21. During the rotation of the stirring shaft 21, the horizontal stirring member 22 and the vertical stirring member 23 sleeved on the stirring shaft 21 can be fixed at a preset position.

[0059] In order to ensure the connection effect of the stamping connection structure, in an embodiment provided by the present invention, as Figure 7 As shown, a stamping plate 202 is also provided on the first sleeve portion 224 of the horizontal stirring member 22 provided at the end.

[0060] It should be noted that in the embodiment provided by the present invention, five groups of horizontal stirring members 22 and four groups of vertical stirring members 23 are provided on the stirring shaft 21, and both ends are horizontal stirring members 22, which is intended to clearly illustrate the present invention and cannot limit the protection scope of the present application. In some embodiments, different numbers of horizontal stirring members 22 and vertical stirring members 23 may also be provided, and the vertical stirring members 23 may be provided at the ends, which is not specifically limited here.

[0061] In order to further improve the reliability of the stirring rod 20, in an embodiment provided by the present invention, as Figure 5 and Fig.10 As shown, the axial cross section of the stirring shaft 21 is a regular polygon. Figure 4 , Figure 6 and Figure 8As shown, the structure of the stirring shaft 21 itself can limit the rotation of the first sleeve portion 224 and the second sleeve portion 232 in the circumferential direction of the stirring shaft 21, thereby effectively reducing the load on the connecting key slot 201 during the rotation of the stirring rod 20 and reducing the risk of the connecting key slot 201 breaking.

[0062] In addition, in some embodiments, the connection strength between the horizontal stirring member 22 and the vertical stirring member 23 may be enhanced by increasing the thickness of the first sleeve portion 224 , the second sleeve portion 232 and the connecting key groove 201 .

[0063] When manufacturing the stirring shaft 21, in order to ensure that it has high strength and performance, reinforced platinum or reinforced platinum alloy is usually selected as the raw material for manufacturing. Such materials are relatively expensive. Therefore, in order to effectively reduce the manufacturing cost, in an embodiment provided by the present invention, Figure 3 and Fig.10 As shown, the stirring shaft 21 is a hollow shaft, and a sealing plate 25 is welded to the end of the stirring shaft 21 .

[0064] In a second aspect, an embodiment of the present invention further provides a molten glass stirring device. Figure 1 and Figure 2 As shown, the molten glass stirring device 100 includes a stirring tank 10 and a stirring rod 20. The wall of the stirring tank 10 is provided with a feed inlet 11. The stirring rod 20 extends along the depth direction of the stirring tank 10 (for example, Figure 1 The stirring tank 10 is rotatably inserted in the stirring tank 10 (in the direction indicated by Y in the figure).

[0065] It should be noted that if Figure 2 As shown, a discharge port 12 is also provided on the wall of the stirring tank 10. Figure 1 and Figure 3 As shown, the horizontal stirring member 22 and the vertical stirring member 23 are arranged between the feed port 11 and the discharge port 12. When in use, the molten glass can flow into the stirring tank 10 from the feed port 11, and flow out from the discharge port 12 after being stirred by the stirring rod 20. In addition, the number of the horizontal stirring member 22 and the vertical stirring member 23 is not unique, and can be specifically set according to the height of the stirring tank 10 and the stirring requirements.

[0066] The molten glass stirring device 100 provided in the embodiment of the present invention is as follows: Figure 1 As shown, the stirring rod 20 is rotatably inserted into the stirring tank 10 along the depth direction of the stirring tank 10. When the stirring rod 20 rotates, the molten glass entering the stirring tank 10 can be stirred. Figure 4 and Figure 5As shown, since the stirring rod 20 includes a stirring shaft 21, a horizontal stirring member 22 and a vertical stirring member 23, and the horizontal stirring member 22 and the vertical stirring member 23 are fixedly connected to the stirring shaft 21, rotating the stirring shaft 21 can drive the horizontal stirring member 22 and the vertical stirring member 23 to rotate together. Figure 1 and Figure 3 As shown, during the rotation of the horizontal stirring member 22, the molten glass can be cut along the radial direction of the stirring shaft 21, so that the molten glass flowing along the axial direction of the stirring shaft 21 is distributed in a thin sheet shape, thereby effectively promoting the stratification and separation of the molten glass in the stirring tank 10; during the rotation of the vertical stirring member 23, the molten glass can be stirred along the radial direction of the stirring shaft 21, and the molten glass can be pushed to flow toward the surrounding tank walls, above and below the vertical stirring member 23 (for example, Figure 4 The molten glass stirring device 100 provided by the present invention can effectively promote the separation and fusion of the molten glass by simultaneously arranging the horizontal stirring member 22 and the vertical stirring member 23 on the stirring shaft 21, thereby effectively improving the stirring effect of the stirring rod 20 and the homogenization effect of the molten glass, and avoiding defects in the formed glass due to uneven stirring.

[0067] To further improve the stirring effect, in one embodiment provided by the present invention, Figure 2 As shown in FIG. 1 , the inner surface of the wall of the stirring tank 10 is formed with raised dots 13. Figure 1 , Figure 2 and Figure 4 As shown, by providing the raised dots 13, the disturbance of the molten glass flowing along the wall can be enhanced. At the same time, after the molten glass driven by the vertical stirring member 23 and flowing toward the wall of the stirring tank 10 flows to the position of the tank wall, it can be dispersed to the surroundings under the action of the raised dots 13. That is, by providing the raised dots 13, the multidirectionality of the flow of the molten glass in the stirring tank 10 can be improved, and the mixing of the molten glass in the stirring tank 10 can be effectively promoted, thereby effectively improving the stirring effect of the above-mentioned molten glass stirring device 100. In addition, the raised dots 13 protrude toward the inside of the tank, which is not easy to store and retain the glass liquid.

[0068] Optionally, there are multiple raised dots 13, and the multiple raised dots 13 are distributed at intervals on the groove wall.

[0069] In one embodiment provided by the present invention, Figure 2 and Fig.11 As shown, the stirring tank 10 also includes an upper port 14 and a cover plate 15 disposed on the upper port 14. Fig.11 and Fig.12As shown, a through hole 16 is provided on the cover plate 15 , and a stirring rod 20 is inserted into the stirring tank 10 through the through hole 16 , and a gap exists between the stirring rod 20 and the inner wall of the through hole 16 .

[0070] In order to facilitate installation, it is preferred that Fig.11 and Fig.12 As shown, the cover plate 15 has a certain thickness and is formed by splicing two semicircular composite plates. Both composite plates are provided with openings. After the two composite plates are spliced ​​together, the two openings are butted together to form a through hole 16 for the stirring rod 20 to pass through.

[0071] Preferably, the through hole 16 is a circular through hole.

[0072] In one embodiment of the present invention, as shown in the figure, the feed port 11 is disposed on the wall of the stirring tank 10, and a gas containing space is formed between the feed port 11 and the upper end 14 of the stirring tank 10. In this way, when the molten glass flows into the stirring tank 10 from the feed port 11 and the liquid level of the glass liquid reaches the molten glass level (located between the upper edge of the feed port 11 and the upper end 14, for example Figure 2 After the molten glass reaches the position shown by the middle dotted line, a gap may be left between the upper surface of the glass liquid and the cover plate 15 of the stirring tank 10 to accommodate bubbles generated during the mixing or stirring process of the molten glass, thereby avoiding the accumulation of bubbles inside the molten glass while ensuring the flow rate.

[0073] Second, as Figure 1 and Fig.13 As shown, an embodiment of the present invention further provides a method for stirring molten glass, wherein the stirring method utilizes the molten glass stirring device 100 in the first aspect to stir the molten glass, and specifically comprises the following steps:

[0074] S1: Introducing molten glass into the molten glass stirring device 100 .

[0075] S2: Stirring the molten glass using the stirring rod 20 , wherein the horizontal stirring piece 22 is rotated to cut the molten glass along the radial direction of the stirring shaft 21 , and the vertical stirring piece 23 is rotated to stir the molten glass along the radial direction of the stirring shaft 21 .

[0076] When the molten glass is stirred by the above method, the horizontal stirring member 22 can be used to cut the molten glass along the radial direction of the stirring shaft 21, so that the molten glass flowing along the axial direction of the stirring shaft 21 is distributed in a thin sheet shape, thereby effectively promoting the stratification and separation of the molten glass in the stirring tank 10; the vertical stirring member 23 can be used to stir the molten glass along the radial direction of the stirring shaft 21 and push the molten glass to flow in all directions, thereby effectively promoting the fusion of the molten glass in the stirring tank 10. The above molten glass stirring method, which stirs the molten glass by the horizontal stirring member 22 and the vertical stirring member 23 at the same time, can effectively promote the separation and fusion of the molten glass, thereby effectively improving the homogenization effect of the molten glass and avoiding defects in the formed glass due to uneven stirring.

[0077] In order to ensure the flow rate and stirring efficiency of the molten glass, step S1 further includes: ensuring that the liquid level of the molten glass is not lower than the height of the upper edge of the feed port 11 .

[0078] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A stirring rod for stirring molten glass. It is characterized in that It comprises a stirring shaft, at least one horizontal stirring member and at least one vertical stirring member, wherein the horizontal stirring member and the vertical stirring member are fixedly connected to the stirring shaft and are alternately arranged along the axial direction of the stirring shaft; The horizontal stirring member comprises a plurality of first blades uniformly distributed along the circumference of the stirring shaft, the first blades extending along the radial direction of the stirring shaft, a hollow groove being provided on the first blades, and a material feeding gap being formed between two adjacent first blades, and the first blades being used to cut the molten glass along the radial direction of the stirring shaft; The vertical stirring member includes a plurality of second blades uniformly distributed along the circumference of the stirring shaft, the second blades include opposite fixed ends and free ends, the fixed end is connected to the stirring shaft, the free end extends in a direction away from the stirring shaft, an upper end face and a lower end face are included between the fixed end and the free end, the upper end face and the lower end face are concave arc surfaces, and the second blades are used to stir the molten glass along the radial direction of the stirring shaft.

2. The stirring rod according to claim 1, It is characterized in that The hollow groove divides the first blade into two branch blades, and the two branch blades are connected at one end away from the stirring shaft.

3. The stirring rod according to claim 1, It is characterized in that The blade thickness of the second blade gradually increases from the free end to the fixed end.

4. The stirring rod according to claim 1, It is characterized in that The horizontal stirring member also includes a first sleeve portion sleeved on the stirring shaft, and the first blade is fixedly arranged on the peripheral side of the first sleeve portion; the vertical stirring member also includes a second sleeve portion, and the second blade is fixedly arranged on the peripheral side of the second sleeve portion.

5. The stirring rod according to claim 4, It is characterized in that The first sleeve portion and the second sleeve portion are both formed with connecting key grooves that can be engaged with each other, and the adjacent horizontal stirring members and the vertical stirring members are mutually engaged through the connecting key grooves.

6. The stirring rod according to claim 5, It is characterized in that A positioning support plate is welded to one end of the stirring shaft, a positioning key slot is formed on the positioning support plate and can be engaged with the connecting key slot, and the horizontal stirring piece or the vertical stirring piece is clamped on the positioning support plate; The horizontal stirring member or the vertical stirring member disposed at one end away from the positioning support plate is stamped and connected to the stirring shaft.

7. The stirring rod according to claim 5, It is characterized in that The axial cross section of the stirring shaft is a regular polygon.

8. The stirring rod according to claim 1, It is characterized in that The stirring shaft is a hollow shaft, and a sealing plate is welded to the end of the stirring shaft.

9. A molten glass stirring device, It is characterized in that It comprises a stirring tank and a stirring rod as claimed in any one of claims 1 to 8, wherein a feeding port is arranged on the tank wall of the stirring tank, and the stirring rod is rotatably inserted into the stirring tank along the depth direction of the stirring tank.

10. The molten glass stirring device according to claim 9, It is characterized in that The inner surface of the tank wall of the stirring tank is formed with protruding dots.

11. The molten glass stirring device according to claim 9, It is characterized in that The stirring tank also includes an upper port and a cover plate arranged on the upper port. The cover plate is provided with a through hole. The stirring rod is inserted into the stirring tank through the through hole, and there is a gap between the stirring rod and the inner wall of the through hole.

12. The molten glass stirring device according to claim 11, It is characterized in that The feed inlet is arranged on the tank wall of the stirring tank, and a gas containing space is formed between the feed inlet and the upper end of the stirring tank.

13. A method for stirring molten glass, It is characterized in that The molten glass is stirred using the molten glass stirring device according to any one of claims 9 to 12, wherein the stirring method comprises the following steps: introducing the molten glass into the molten glass stirring device; The molten glass is stirred by the stirring rod, wherein the horizontal stirring piece is rotated to cut the molten glass in the radial direction of the stirring shaft; and the vertical stirring piece is rotated to stir the molten glass in the radial direction of the stirring shaft.

14. The method for stirring molten glass according to claim 13, It is characterized in that Introducing the molten glass into the molten glass stirring device further comprises: The liquid level of the molten glass is ensured to be not lower than the height of the upper edge of the feed port.

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