Stirring device for molten glass

Abstract

The utility model relates to a stirring device for molten glass, which comprises a stirring barrel and a stirring component, and a stirring cavity is formed in the stirring barrel; the stirring assembly comprises a driving part and a stirring part, the stirring part is connected with the output end of the driving part, the driving part is fixed to the upper portion of the stirring barrel, and the stirring part is rotationally connected into the stirring cavity; wherein a flow guide part is further formed on the side wall of the stirring cavity, an incident flow surface is formed on the flow guide part, and the incident flow surface is used for guiding fluid to the direction of a central shaft of the stirring cavity; in the stirring process of the stirring piece, the molten glass close to the side wall of the stirring cavity is guided to the direction of the central axis of the stirring cavity under the action of the incident flow surface, so that the stirring assembly stirs the molten glass in the stirring cavity more thoroughly, all components in the molten glass are mixed more uniformly, the quality of the finally formed carrier plate glass is higher, and the quality of the carrier plate glass is improved. And flaws such as streaks are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of carrier glass manufacturing, and specifically relates to a stirring device for molten glass. Background Art

[0002] Carrier glass is an extremely flat thin glass sheet, which is made into a transparent conductive pattern through photolithography processing and is a core component in the upstream of liquid crystal panels.

[0003] Carrier glass manufactures glass products by heating glass raw materials to generate molten glass and forming the generated molten glass. The molten glass raw materials are transported into a stirring device and stirred evenly. Especially at the position near the side wall of the stirring cavity, due to the length limitation of the stirring shaft, the molten glass near the stirring cavity cannot be stirred evenly; the uneven molten glass becomes the reason for generating streaks on the glass product. Streaks are ribbed areas with refractive indices and specific gravities different from those of the surrounding areas. When used to manufacture liquid crystal displays, these streaks will affect the display effect of the display, resulting in poor display effect of the liquid crystal display and poor quality of the finished product. Summary of the Invention

[0004] The purpose of the utility model is to provide a stirring device for molten glass to solve the problems in the prior art that the molten glass raw materials are unevenly mixed during the mixing and stirring process, resulting in poor quality of the finished product.

[0005] To achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a stirring device for molten glass, which includes:

[0007] A stirring cylinder body, in which a stirring cavity is formed;

[0008] A stirring assembly, which includes a driving member and a stirring member. The stirring member is connected to the output end of the driving member. The driving member is fixed above the stirring cylinder body, and the stirring member is rotatably connected in the stirring cavity;

[0009] Wherein, a guiding part is further formed on the side wall of the stirring cavity, and a flow-facing surface is formed on the guiding part, and the flow-facing surface is used for guiding the fluid towards the central axis direction of the stirring cavity.

[0010] In some embodiments of the present application, the stirring member includes a stirring shaft and a plurality of stirring wings formed on the periphery of the stirring shaft.

[0011] In some embodiments of the present application, at least one stirring wing at the bottom of the stirring shaft is formed with a scraping part, and an arc-shaped scraping surface extending from the bottom of the stirring cavity is formed on the scraping part.

[0012] In some embodiments of the present application, the stirring cylinder body includes an outer shell, an inner shell, and a cover plate. The inner shell is disposed inside the outer shell, and the cover plate covers the upper parts of the outer shell and the inner shell. An annular heating outer cavity is formed between the outer shell and the inner shell, and a heating assembly is disposed in the heating inner cavity.

[0013] In some embodiments of the present application, the heating assembly includes a support frame and a heating element. The support frame is fixed in the heating outer cavity, and the heating element is fixed on one side of the support frame close to the inner shell for heating the stirring cavity.

[0014] In some embodiments of the present application, the overall shape of the support frame is arc-shaped and is adapted to the radian of the heating inner cavity. The support frame includes support vertical frames and support horizontal frames. The number of support vertical frames is multiple, and each support vertical frame is vertically disposed in the heating inner cavity. Each support horizontal frame is horizontally and spacedly disposed on the support vertical frames.

[0015] In some embodiments of the present application, a maintenance window is formed on the outer shell, and the maintenance window corresponds to the position of the heating assembly.

[0016] In some embodiments of the present application, the stirring cavity is externally connected to a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is located at an upper position of the stirring cavity, and the liquid outlet pipe is located at a lower position of the stirring cavity.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are:

[0018] For the stirring device for molten glass involved in the present application, a guiding portion protruding into the stirring cavity is formed on the side wall of the stirring cavity, and a flow-facing surface is formed on the guiding portion. During the stirring process of the stirring member, the molten glass near the side wall of the stirring cavity is guided towards the central axis direction of the stirring cavity under the action of the flow-facing surface, and is mixed more uniformly with the molten glass at other positions, improving the stirring quality, making the quality of the finally formed carrier glass higher, and reducing defects such as streaks.

[0019] After reading the specific embodiments of the present utility model in conjunction with the accompanying drawings, other features and advantages of the present utility model will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic structural diagram of a stirring device for molten glass proposed by the present utility model;

[0022] Figure 2 is a schematic exploded view of a stirring cylinder body, a stirring assembly, and a heating assembly;

[0023] Figure 3 is a schematic structural diagram of the stirring assembly;

[0024] Figure 4 is a partially sectional view of the stirring device for molten glass;

[0025] Figure 5 is a schematic structural diagram of the heating assembly;

[0026] Figure 6 is a partially sectional view of the stirring cylinder body;

[0027] Figure 7 is a schematic diagram of the position of the flow guiding part in the stirring cylinder body;

[0028] In the figure,

[0029] 100, stirring cylinder body; 101, liquid inlet pipe; 102, liquid outlet pipe; 103, stirring chamber; 104, heating chamber;

[0030] 110, outer housing; 120, inner housing; 130, flow guiding part; 131, oncoming flow surface; 140, cover plate part;

[0031] 200, stirring assembly; 210, driving part; 220, stirring shaft; 230, stirring blade; 240, scraping part; 241, arc scraping surface;

[0032] 300, heating assembly; 310, support frame; 311, support vertical frame; 312, support horizontal frame; 320, heating element. Specific implementation mode

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a 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 of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the 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 should not be construed as a limitation to the present application.

[0035] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0038] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0039] The main raw materials of the carrier glass include high-purity silica sand, alumina, magnesia, etc.

[0040] The carrier glass is a very flat thin glass sheet and is one of the key basic materials in the flat panel display industry.

[0041] The raw materials of the carrier glass not only include high-purity silica sand, but also other additives such as alumina, magnesia, etc. The supply chain and price fluctuations of these high-purity raw materials directly affect the production cost of the carrier glass.

[0042] Specifically, the main raw materials of the carrier glass also include quartz powder, strontium carbonate, barium carbonate, boric acid, boric anhydride, alumina, calcium carbonate, barium nitrate, magnesia, tin oxide, zinc oxide, etc. These components form the main body of the glass and determine the physical and chemical properties of the carrier glass. For example, quartz powder (the main component is SiO2) is the main oxide that forms the glass. It forms an irregular continuous network to become the skeleton of the glass, reducing the thermal expansion coefficient and density of the glass and increasing the strain point of the glass.

[0043] Mixing various raw materials used for producing the carrier glass evenly is an important factor to ensure the forming quality of the carrier glass. In the existing stirring device for molten glass, during the stirring process, some raw materials close to the side wall of the stirring cylinder cannot be fully stirred, and there may be a problem of uneven stirring.

[0044] Reference Figures 1 - 7 , to solve the above problems, the present application proposes a stirring device for molten glass, which includes a stirring cylinder body 100 and a stirring assembly 200.

[0045] A stirring cavity 103 is formed inside the stirring cylinder body 100, and the molten glass is evenly stirred with other additives inside the stirring cavity 103.

[0046] The stirring cavity 103 is externally connected to a liquid inlet pipe 101 and a liquid outlet pipe 102. The liquid inlet pipe 101 is located at the upper position of the stirring cavity 103, and the liquid outlet pipe 102 is located at the lower position of the stirring cavity 103.

[0047] Switch valves are provided inside the liquid inlet pipe 101 and the liquid outlet pipe 102 to control the opening and closing of the liquid inlet process and the liquid outlet process.

[0048] The stirring assembly 200 includes a driving member 210 and a stirring member. The stirring member is connected to the output end of the driving member 210. The driving member 210 is fixed above the stirring cylinder body 100, and the stirring member is rotatably connected inside the stirring cavity 103.

[0049] Among them, referring to Figure 6 、 Figure 7 , a guiding portion 130 is further formed on the side wall of the stirring cavity 103. A flow-facing surface 131 is formed on the guiding portion 130, and the flow-facing surface 131 is used to guide the fluid towards the central axis direction of the stirring cavity 103.

[0050] Specifically, a guiding arc surface that gradually inclines towards the central axis direction along the flowing direction of the molten glass is formed on the flow-facing surface 131.

[0051] During the stirring process, the stirring member causes the molten glass to flow clockwise or counterclockwise. The flow-facing surface 131 is opposite to the flowing direction of the molten glass. When the molten glass flows, it collides with the flow-facing surface 131 in the opposite direction. Under the guiding action of the flow-facing surface 131, the molten glass flows towards the central axis direction, so as to improve the flowing effect of the molten glass near the side wall of the stirring cavity 103 and the mixing effect with the molten glass at other positions.

[0052] The design of the guiding portion 130 enables the stirring assembly 200 to stir the molten glass in the stirring cavity 103 more thoroughly, makes the mixing of each component in the molten glass more uniform, improves the stirring quality, enables the quality of the finally formed carrier glass to be higher, and reduces defects such as streaks.

[0053] The stirring member includes a stirring shaft 220 and a plurality of stirring wings 230 formed on the circumferential side of the stirring shaft 220.

[0054] The stirring wings 230 extend towards the side wall of the stirring cavity 103 along the direction perpendicular to the stirring shaft 220, and the ends of the stirring wings 230 are ensured not to contact the guiding portion 130 to avoid interference between the stirring wings 230 and the guiding portion 130 during rotation.

[0055] Reference Figure 3 , in some embodiments of the present application, a scraping portion 240 is formed on at least one stirring wing 230 at the bottommost part of the stirring shaft 220, and an arc-shaped scraping surface 241 extending from the bottom of the stirring cavity 103 is formed on the scraping portion 240.

[0056] The number of the scraping portions 240 can be one, or a plurality of them can be arranged at intervals along the length direction of the stirring shaft 220.

[0057] The scraping portion 240 can stir the molten glass located at the bottom of the stirring cavity 103, and the arc-shaped scraping surface 241 formed thereon can reduce the stirring resistance.

[0058] The scraping portion 240 can be formed at the lower end of one stirring wing 230 at the bottommost part of the stirring shaft 220, or can be formed at the lower ends of a plurality of stirring wings 230 at the bottommost part of the stirring shaft 220, and is used to thoroughly mix the molten glass at the bottom of the stirring cavity 103 and improve the uniformity of stirring.

[0059] In some embodiments of the present application, the stirring cylinder body 100 includes an outer shell 110, an inner shell 120, and a cover plate member 140. The inner shell 120 is disposed within the outer shell 110, and the cover plate member 140 covers the upper portions of the outer shell 110 and the inner shell 120. An annular heating cavity 104 is formed between the outer shell 110 and the inner shell 120.

[0060] The outer shell 110 includes an outer wall and a bottom wall. The inner shell 120 at least includes an inner wall. The inner shell 120 is fixed within the outer shell 110, and a stirring cavity 103 is formed within the inner shell 120.

[0061] The cover plate member 140 covers the upper portion of the outer shell 110. The driving member 210 within the stirring assembly 200 is fixed above the cover plate member 140 through a bracket, and the stirring shaft 220 passes through the cover plate member 140 and is connected to the output end of the driving member 210.

[0062] A bearing member is formed between the stirring shaft 220 and the cover plate member 140 to ensure smooth rotation of the stirring shaft 220 relative to the cover plate member 140.

[0063] A heating assembly 300 is disposed in the heating cavity 104 between the outer shell 110 and the inner shell 120, and is used to further heat the stirring cavity 103 during the stirring process, so as to avoid problems such as a gradual decrease in the temperature of the molten glass during the stirring process, resulting in a decrease in the fluidity of the components in the molten glass and uneven mixing.

[0064] Specifically refer to 4. Figure 5 , the heating assembly 300 includes a support frame 310 and a heating element 320. The support frame 310 is fixed in the heating cavity 104, and the heating element 320 is fixed on one side of the support frame 310 close to the inner shell 120 for heating the stirring cavity 103.

[0065] The overall shape of the support frame 310 is arc-shaped and is adapted to the radian of the heating cavity 104. The support frame 310 includes support vertical frames 311 and support horizontal frames 312. The number of support vertical frames 311 is multiple, and each support vertical frame 311 is vertically disposed in the heating cavity 104. Each support horizontal frame 312 is horizontally and spacedly disposed on the support vertical frames 311.

[0066] The heating element 320 can specifically be set as a heating structure such as a heating resistor or an electromagnetic coil, and its heating temperature can be adjusted between dozens of degrees and thousands of degrees according to actual heating requirements.

[0067] An inspection window is formed on the outer shell 110, and the inspection window corresponds to the position of the heating assembly 300 to facilitate heating of the heating assembly 300.

[0068] The heating component 300 is integrally arc-shaped and is arranged in a part of the heating cavity 104. Since the molten glass in the stirring cavity 103 is flowing, the overall heating and heat preservation effect of the molten glass can also be achieved.

[0069] In addition, the number of the heating components 300 can also be set to be multiple, and they are arranged at intervals along the outer circumference of the inner housing 120 in the heating cavity to improve the heating effect.

[0070] In some other embodiments, the heating component 300 can also integrally surround the outer side of the inner housing 120 to heat the inner housing 120 as a whole.

[0071] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0072] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A stirring device for molten glass, characterized in that include: A mixing cylinder having a mixing chamber formed therein; A stirring assembly, comprising a driving member and a stirring member, wherein the stirring member is connected to an output end of the driving member, the driving member is fixed above the stirring cylinder, and the stirring member is rotatably connected in the stirring chamber; A flow guide portion is formed on the side wall of the stirring chamber, and a flow front surface is formed on the flow guide portion. The flow front surface is used to guide the fluid toward the central axis direction of the stirring chamber.

2. The stirring device for molten glass according to claim 1, characterized in that The stirring member includes a stirring shaft and a plurality of stirring wings formed on a circumference of the stirring shaft.

3. The stirring device for molten glass according to claim 2, characterized in that A scraper portion is formed on at least one stirring wing located at the bottom of the stirring shaft, and an arc-shaped scraping surface extending from the bottom of the stirring chamber is formed on the scraper portion.

4. The stirring device for molten glass according to claim 1, wherein The mixing drum comprises an outer shell, an inner shell and a cover plate, wherein the inner shell is arranged as an inner shell in the outer shell, and the cover plate is arranged on top of the outer shell and the inner shell, and an annular heating outer cavity is formed between the outer shell and the inner shell, and a heating component is arranged in the heating inner cavity.

5. The stirring device for molten glass according to claim 4, characterized in that The heating assembly comprises a support frame and a heating element. The support frame is fixed in the heating outer cavity. The heating element is fixed on one side of the support frame close to the inner shell and is used to heat the stirring cavity.

6. The stirring device for molten glass according to claim 5, characterized in that The support frame is arc-shaped as a whole, which is compatible with the curvature of the heating cavity. The support frame includes a support stand and a support cross frame. There are multiple support stands, each of which is vertically arranged in the heating cavity, and each of the support cross frames is horizontally spaced on the support stand.

7. The stirring device for molten glass according to claim 5, characterized in that An inspection window is formed on the outer shell, and the inspection window corresponds to the position of the heating component.

8. The stirring device for molten glass according to claim 1, wherein: The stirring chamber is externally connected to a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe is located at an upper position of the stirring chamber, and the liquid outlet pipe is located at a lower position of the stirring chamber.

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