Tin bath device for float glass production

Abstract

The utility model discloses a tin bath device for float glass production, which comprises a tin bath main body and a diversion groove, a bottom is mounted on the bottom surface of the tin bath main body, a blocking ridge is fixedly mounted on the top surface of the bottom, tin liquor is contained in the top surface of the bottom, a glass tape floats on the top surface of the tin liquor, and the diversion groove is fixedly mounted above the glass tape and inside the tin bath main body. The device has the beneficial effects that the shunting groove is formed, the air outlet groove is formed in the top surface and the bottom surface of the shunting groove, the air inlet pipe is communicated with nitrogen and reducing hydrogen, airflow enters the shunting groove through the first shunting pipe, the second shunting pipe, the third shunting pipe and the fourth shunting pipe and is blown out through the air outlet groove, and a lateral air curtain is formed; according to the air curtain device, impurities volatilized by tin liquid which is not in contact with a glass tape are prevented from penetrating through and polluting glass, the glass yield is improved, the air curtain coverage range is wide and continuous, direct contact with the tin liquid is avoided, the impurity interception effect is better, the structure is simpler, the trouble of consumable replacement is avoided, and the use convenience and the working efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of float glass production, in particular to a tin bath device for float glass production. Background Art

[0002] The vast majority of my country's flat glass is produced using float glass technology. Float glass technology uses molten glass with a low specific gravity to float on top of tin liquid with a high specific gravity. The molten glass is used to produce flat glass of the required thickness and width under the combined effects of its own gravity, surface tension, the pulling force of the annealing rollers, and the edge drawing machine. The main structure of the tin bath is divided into upper and lower structures, the upper part is the tin bath top cover, and the lower part is the tin bath bottom. The tin bath consists of three parts: the inlet end, the tin bath body, and the outlet end (transition roller table). The inlet end is the transition point between the tin bath and the melting furnace, and the outlet end is the connection point between the tin bath and the annealing furnace. The tin bath body is a rectangular enclosed space built with steel plates and refractory materials.

[0003] The prior art discloses an application number: CN201720980650.6, and is named a tin bath device for a float glass production line. The application proposes that the melting furnace atmosphere enters the tin bath, and the sulfur ions carried in the melting furnace atmosphere greatly increase the volatilization amount of the tin liquid and react with the tin liquid to form SnS2. The reactants condense on the solid interface such as the tin bath inlet end or the tin bath top cover. Under certain conditions, falling will cause quality defects such as light distortion and tin impurities. Air outside the tin bath enters the tin bath, and tin vapor and Sn0 meet oxygen here to form SnO2, and adhere to the upper part of the tin bath or the cover brick. When the tin bath pressure fluctuates or is vibrated by external force, it falls on the glass liquid surface to form tin stone quality defects. By adding a high-silica fiber curtain on the basis of the original tin bath structure, this curtain can separate the glass ribbon from the exposed tin liquid surface, thereby avoiding the chance of contamination of the glass ribbon by impurities such as SnO2 and SnS, and improving the glass yield.

[0004] However, in actual production, the installation height of the high-silica fiber curtain needs to be strictly controlled so that it can be in contact with the tin liquid as much as possible to play the greatest role. However, the liquid level of the tin liquid is in a dynamic equilibrium state. During the process of the liquid level floating up and down, a gap is easily formed between the high-silica fiber curtain. In addition, there will be installation gaps between the high-silica fiber curtains. The gaps cause impurities to pass through, which will still slightly affect the yield of the glass. The interception protection is not comprehensive enough, and as impurities are continuously generated, their concentration gradually increases, which will also affect the quality of the tin liquid and the yield of the glass. In addition, the high-silica fiber curtain has a service life. Long-term contact with the tin liquid accelerates its aging and degeneration, and it needs to be replaced frequently. It is difficult to shut down the glass production process, which will cause huge economic losses. Therefore, it can be further improved. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a tin bath device for float glass production, which has the advantages of simple structure, high working efficiency and convenient use, thereby solving the problems in the above-mentioned background technology.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned advantages of simple structure, high working efficiency and convenient use, the specific technical solution adopted by the present invention is as follows: A tin bath device for float glass production includes a tin bath main body and a diverter trough, the bottom surface of the tin bath main body is installed with a bottom, and a barrier is fixedly installed on the top surface of the bottom, and tin liquid is placed on the top surface of the bottom, a glass ribbon floats on the top surface of the tin liquid, and a diverter trough is fixedly installed inside the tin bath main body above the glass ribbon, and an air outlet groove is opened on the bottom surface of the diverter trough, the top surface of the diverter trough is connected to a fourth diverter pipe, and the top surface of the fourth diverter pipe is connected to a third diverter pipe, and the surface of the third diverter pipe is connected to a second diverter pipe, the second diverter pipe passes through the top surface of the tin bath main body and is connected to the first diverter pipe, and the surface of the first diverter pipe is connected to an air inlet pipe.

[0009] Furthermore, the diverter trough is located directly above the edge of the glass ribbon, and two groups of diverter troughs are provided.

[0010] Furthermore, the overall profile of the diverter trough matches the edge profile of the glass ribbon, and the length of the diverter trough is equal to the inner length of the tin bath body.

[0011] Furthermore, the air outlet groove is opened along the length direction of the diversion groove, and the width of the air outlet groove is not less than 5 mm.

[0012] Furthermore, the fourth diversion pipes are arranged in multiple groups at different wind distances.

[0013] Furthermore, an air pump is fixedly installed on the top surface of the tin bath body, outside the diversion groove and outside the first diversion pipe, and the air inlet end of the air pump is connected to the inside of the tin bath body through the air pump pipe.

[0014] Furthermore, the air extraction pump is used in conjunction with a timing controller, and an output end of the timing controller is electrically connected to an input end of the air extraction pump.

[0015] Furthermore, the air inlet end of the air inlet pipe is connected to nitrogen and reducing hydrogen delivery equipment.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the present invention provides a tin bath device for float glass production, which has the following beneficial effects:

[0018] (1) The utility model is provided with a diverter trough, and an air outlet trough is provided on the top and bottom surfaces of the diverter trough. The air inlet pipe is connected to nitrogen and reducing hydrogen. The air flow enters the diverter trough through the first diverter pipe, the second diverter pipe, the third diverter pipe and the fourth diverter pipe, and is blown out through the air outlet trough to form a lateral wind curtain, which prevents impurities volatilized from the tin liquid that does not contact the glass ribbon from passing through and contaminating the glass, thereby improving the glass yield. The wind curtain covers a wide and continuous range, and at the same time, avoids direct contact with the tin liquid, has a better impurity interception effect, and is simpler in structure, avoiding the trouble of replacing consumables, and improving the convenience of use and work efficiency.

[0019] (2) The utility model is provided with a diverter trough and an air pump. The shape of the diverter trough matches the shape of the outer edge of the glass ribbon, and its protection and interception effects are better and more comprehensive. At the same time, the air pump located outside the diverter trough is started at a fixed time to extract the high-concentration impurities and gases outside the diverter trough out of the tin bath body, thereby avoiding the influence of excessive impurity concentration on the quality of the tin liquid and further improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0021] Figure 1 This is a schematic diagram of the internal structure of a tin bath device for float glass production according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the external structure of a tin bath device for float glass production according to an embodiment of the present utility model;

[0023] Figure 3 1 is a schematic diagram of the top structure of the diversion trough according to an embodiment of the present utility model;

[0024] Figure 4 It is a schematic diagram of the bottom structure of the diversion trough according to an embodiment of the utility model.

[0025] In the picture:

[0026] 1. Tin bath body; 2. Bottom; 3. Baffle; 4. Tin liquid; 5. Glass ribbon; 6. Air inlet pipe; 7. First diverter pipe; 8. Second diverter pipe; 9. Third diverter pipe; 10. Fourth diverter pipe; 11. Diverter trough; 12. Vacuum pump; 13. Vacuum pipe; 14. Air outlet trough. DETAILED DESCRIPTION

[0027] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] According to an embodiment of the present utility model, a tin bath device for float glass production is provided.

[0029] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-4 As shown, according to an embodiment of the present invention, a tin bath device for float glass production includes a tin bath body 1 and a diverter trough 11. The bottom surface of the tin bath body 1 is installed with a bottom 2, and the top surface of the bottom 2 is fixedly installed with a barrier 3, and the top surface of the bottom 2 is filled with tin liquid 4, and a glass ribbon 5 floats on the top surface of the tin liquid 4. These are all common structures in the field and will not be described in detail here. The diverter trough 11 is fixedly installed inside the tin bath body 1 above the glass ribbon 5, and the bottom surface of the diverter trough 11 is provided with an air outlet groove 14. The diverter trough 1 The top surface of the tin bath body 1 is connected through a fourth diverter pipe 10, and the top surface of the fourth diverter pipe 10 is connected through a third diverter pipe 9, and the surface of the third diverter pipe 9 is connected through a second diverter pipe 8, the second diverter pipe 8 passes through the top surface of the tin bath body 1 and is connected through a first diverter pipe 7, and the surface of the first diverter pipe 7 is connected through an air inlet pipe 6, the first diverter pipe 7, the second diverter pipe 8, the third diverter pipe 9, the fourth diverter pipe 10 and the diverter groove 11 play a role of step-by-step diversion, thereby improving the uniformity of the airflow ejected along the air outlet groove 14.

[0030] In one embodiment, the diverter groove 11 is located directly above the edge of the glass ribbon 5, and two groups of diverter grooves 11 are provided, wherein the overall contour of the diverter groove 11 matches the edge contour of the glass ribbon 5, and the length of the diverter groove 11 is equal to the internal length of the tin bath body 1, and the shape of the diverter groove 11 matches the shape of the formed outer edge of the glass ribbon 5, and its protection and interception effect is better and more comprehensive.

[0031] In one embodiment, the air outlet groove 14 is opened along the length direction of the diversion groove 11, and the width of the air outlet groove 14 is not less than 5 mm. The width of the air outlet groove 14 is large to avoid acceleration of the air flow when it flows out, thereby reducing the kinetic energy of the air flow and preventing the air flow from causing fluctuations in the tin liquid 4.

[0032] In one embodiment, the fourth diverter pipes 10 are arranged in multiple groups at different wind distances to improve the uniformity of airflow diversion.

[0033] In one embodiment, the top surface of the tin bath main body 1 is located outside the diverter trough 11 and outside the first diverter pipe 7, and an air pump 12 is fixedly installed, and the air inlet end of the air pump 12 is connected to the inside of the tin bath main body 1 through the air pump 13. The air pump 12 is used in conjunction with a timing controller, and the output end of the timing controller is electrically connected to the input end of the air pump 12. It is a common timed start structure and will not be elaborated on here. The air pump 12 located outside the diverter trough 11 is started regularly to extract high-concentration impurities and gases located outside the diverter trough 11 out of the tin bath main body 1, thereby avoiding excessive impurity concentration affecting the quality of the tin liquid 4 and further improving work efficiency.

[0034] In one embodiment, the air inlet end of the air inlet pipe 6 is connected to nitrogen and reducing hydrogen gas delivery equipment. The nitrogen and reducing hydrogen gas delivery equipment is a common structure in the art and is not shown in the figure.

[0035] Working principle: The air inlet pipe 6 is connected to nitrogen and reducing hydrogen, and the air flow passes through the first diversion pipe 7, the second diversion pipe 8, the third diversion pipe 9 and the fourth diversion pipe 10 into the diversion trough 11, and is blown out through the air outlet groove 14 to form a lateral air curtain, which prevents impurities volatilized from the tin liquid 4 that does not contact the glass ribbon 5 from passing through and contaminating the glass, thereby improving the glass yield. The air curtain has a wide and continuous coverage area, and at the same time, avoids direct contact with the tin liquid 4, has a better impurity interception effect, a simpler structure, avoids the trouble of replacing consumables, and improves the convenience of use and work efficiency. At the same time, the shape of the diversion trough 11 matches the shape of the outer edge of the glass ribbon 5, and its protection and interception effects are better and more comprehensive. At the same time, the vacuum pump 12 located outside the diversion trough 11 is started regularly to extract high-concentration impurities and gases outside the diversion trough 11 out of the tin bath body 1, thereby preventing excessive impurity concentration from affecting the quality of the tin liquid 4, further improving work efficiency.

[0036] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tin bath device for float glass production, comprising a tin bath body (1) and a diversion trough (11), characterized in that: The bottom surface of the tin bath body (1) is provided with a bottom portion (2), and a barrier (3) is fixedly installed on the top surface of the bottom portion (2), and tin liquid (4) is contained on the top surface of the bottom portion (2), a glass strip (5) floats on the top surface of the tin liquid (4), and a diversion trough (11) is fixedly installed above the glass strip (5) inside the tin bath body (1), and an air outlet trough (14) is provided on the bottom surface of the diversion trough (11), a fourth diversion pipe (10) is connected through the top surface of the diversion trough (11), and a third diversion pipe (9) is connected through the top surface of the fourth diversion pipe (10), and a second diversion pipe (8) is connected through the surface of the third diversion pipe (9), the second diversion pipe (8) passes through the top surface of the tin bath body (1) and is connected through the first diversion pipe (7), and an air inlet pipe (6) is connected through the surface of the first diversion pipe (7).

2. A tin bath device for float glass production according to claim 1, characterized in that: The diverter troughs (11) are located directly above the edge of the glass ribbon (5), and two groups of diverter troughs (11) are provided.

3. A tin bath device for float glass production according to claim 1, characterized in that: The overall profile of the diverter trough (11) matches the edge profile of the glass ribbon (5), and the length of the diverter trough (11) is equal to the internal length of the tin bath body (1).

4. A tin bath device for float glass production according to claim 1, characterized in that: The air outlet groove (14) is opened along the length direction of the diversion groove (11), and the width of the air outlet groove (14) is not less than 5 mm.

5. The tin bath device for float glass production according to claim 1, characterized in that: The fourth diversion pipes (10) are arranged in multiple groups at different wind distances.

6. A tin bath device for float glass production according to claim 1, characterized in that: The top surface of the tin bath body (1) is located outside the diversion trough (11) and outside the first diversion pipe (7), and an air pump (12) is fixedly installed thereon, and the air inlet end of the air pump (12) is connected to the interior of the tin bath body (1) via the air pump pipe (13).

7. A tin bath device for float glass production according to claim 6, characterized in that: The air extraction pump (12) is used in conjunction with a timing controller, and an output end of the timing controller is electrically connected to an input end of the air extraction pump (12).

8. The tin bath device for float glass production according to claim 1, characterized in that: The air inlet end of the air inlet pipe (6) is in continuous connection with nitrogen and reducing hydrogen delivery equipment.

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