Sealing device for the charging port of TFT glass carrier furnace

Abstract

The utility model discloses a sealing device for the charging port of a TFT glass carrier kiln, and relates to the technical field of glass production. The technical scheme is as follows: it comprises a sleeve one, one end of which is fixed on the retaining brick at the charging port of the kiln, and the other end is detachably connected with a sleeve two, and the end of the sleeve two is detachably fixed on the water cooling jacket of the spiral feeder; the spiral feeder extends into the kiln from the charging port, and the sleeve one and the sleeve two are covered on the outside of the spiral feeder. The utility model can stabilize the flow state of the flue gas in the kiln, make the melting temperature curve stable and controllable, and avoid the generation of bubbles, stones, and nodules; at the same time, it avoids the contact of the flue gas with the external cold air, does not generate condensed water, and keeps the redox state at the charging port unchanged, which is conducive to subsequent melting and avoids the generation of bubble defects; finally, the liquid phase among the three phases of gas, liquid and solid is destroyed, the service life of the equipment is extended, and finally the purpose of reducing the defects inside the glass and improving the quality of the glass is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of glass production, in particular to a sealing device for a charging port of a TFT glass carrier kiln. Background Art

[0002] TFT glass substrate is one of the main materials for manufacturing liquid crystal panels. It is widely used in various display terminal devices such as smart phones, tablet computers, LCD TVs, and car screens. Its quality directly affects the production efficiency of panel manufacturers and the display effect of display terminals. Therefore, higher requirements are placed on the quality of TFT glass substrates, especially strict regulations on the number and size of defects such as gas inclusions and solid inclusions in the glass. In the production of TFT glass substrates, extremely high temperatures are required to melt, clarify, and homogenize the batch materials to achieve qualified glass liquid that meets the requirements for molding. Therefore, TFT glass substrate kilns mostly use spiral feeders to feed materials, thereby improving the sealing of the kiln and increasing the temperature. However, due to the influence of the structure, there are situations such as poor sealing or sealing failure between the spiral feeder and the kiln, which causes changes in the kiln flue gas airflow, changes in the atmosphere of the feed port, and accelerated erosion of the feed port bricks. The change of flue gas flow will change the deviation of the temperature system curve of the kiln, leading to the stimulation of bubbles, stones and nodules; at the same time, due to the high water content of flue gas, a large amount of condensed water is generated at the junction of cold and hot, causing the change of the atmosphere of the charging port, resulting in the generation of bubble defects, and finally causing the accelerated erosion of the refractory at the junction of solid, liquid and gas. The internal defects of the product and the damage of the production equipment caused by the above reasons have a great impact on continuous production. Therefore, strengthening the sealing of the feeding port of the spiral feeder to avoid the generation of defects and the erosion of refractory materials is of great significance to the improvement of the product quality of the TFT glass carrier and the economic benefits of the kiln. The current TFT glass carrier kiln charging port is sealed by plugging the gap with insulation cotton, which has poor sealing effect and is easy to fail. The temperature system curve, the change of atmosphere, and the erosion of the charging port brick can be considered as one of the factors that cause glass defects. Therefore, it is necessary to improve the sealing method of the charging port. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a sealing device for a charging port of a TFT glass carrier kiln, which can stabilize the flow state of the flue gas in the kiln, make the melting temperature curve stable and controllable, and avoid the generation of bubbles, stones, and nodules; at the same time, the flue gas is prevented from contacting with the external cold air, and condensed water is not generated, so that the redox state at the charging port does not change, which is beneficial to subsequent melting and avoids the generation of bubble defects; finally, the liquid phase among the three phases of gas, liquid and solid is destroyed, the service life of the equipment is extended, and finally the purpose of reducing defects inside the glass and improving the quality of the glass is achieved.

[0004] The technical solution of the utility model is:

[0005] A sealing device for a TFT glass carrier kiln charging port comprises a sleeve 1, one end of which is fixed on a retaining brick at the kiln charging port, and the other end is detachably connected to a sleeve 2, the end of which is detachably fixed on a water cooling jacket of a spiral feeder; the spiral feeder extends into the kiln from the charging port, and the sleeves 1 and 2 are covered on the outside of the spiral feeder.

[0006] Preferably, the second sleeve is corrugated.

[0007] Preferably, the sleeve one and the sleeve two are both in a truncated cone shape, and the end of the sleeve one with a smaller diameter is fixed on the retaining brick, and the end of the sleeve two with a larger diameter is connected to the sleeve one.

[0008] Preferably, one end of the second sleeve connected to the water cooling jacket of the screw feeder is provided with a sealing gasket, and the sealing gasket is sleeved on the water cooling jacket of the screw feeder.

[0009] Preferably, the first sleeve and the second sleeve are connected by bolts.

[0010] Preferably, the second sleeve is fixed on the water cooling jacket of the screw feeder through a clamp.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The sealing device of the utility model can stabilize the flow state of flue gas in the kiln, make the melting temperature curve stable and controllable, avoid the generation of bubbles, stones and nodules; at the same time, it prevents the flue gas from contacting with the cold air outside, does not generate condensed water, and keeps the redox state at the feeding port unchanged, which is beneficial to the subsequent melting and avoids the generation of bubble defects; finally, it destroys the liquid phase among the three phases of gas, liquid and solid, prolongs the service life of the equipment, and finally achieves the purpose of reducing defects inside the glass and improving the quality of the glass. In addition, after the sealing of the kiln feeding port is enhanced, the energy consumption is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural schematic diagram of a sealing device for a charging port of a TFT glass carrier kiln.

[0014] In the figure, 1, casing one; 2, retaining brick; 3, casing two; 4, water cooling jacket of spiral feeder; 5, sealing gasket; 6, bolt; 7, clamp; 8, gable; 9, pool wall. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0016] Example 1

[0017] like Figure 1 As shown, this embodiment provides a sealing device for the charging port of a TFT glass carrier kiln, including a sleeve 1, one end of which is fixed to the retaining brick 2 at the charging port of the kiln, and the other end is connected to a sleeve 2 3 by a bolt 6, and the end of the sleeve 2 3 is fixed to the water cooling jacket 4 of the spiral feeder by a clamp 7; the spiral feeder extends into the kiln from the charging port, and the sleeve 1 1 and the sleeve 2 3 cover the outside of the spiral feeder. In addition, the sleeve 2 3 is corrugated, so that the sleeve 2 3 has a certain degree of elasticity, which is convenient for connection with the sleeve 1 and the water cooling jacket 4 of the spiral feeder. A sealing gasket 5 is provided at one end of the sleeve 2 3 connected to the water cooling jacket 4 of the spiral feeder, and the sealing gasket 5 is sleeved on the water cooling jacket 4 of the spiral feeder to further improve the sealing performance of the sealing device.

[0018] The raw materials of the TFT glass carrier are fed into the flame space area A of the kiln through the screw rod of the screw feeder and enter the glass liquid area B. The sealing device of this embodiment can ensure the sealing of the flame space area A, stabilize the flue gas flow, and help eliminate the defects such as bubbles, stones, and nodules; at the same time, the flue gas in the flame space area A is isolated from the air in the external space area C, avoiding the generation of condensed water by the collision of cold and hot, ensuring the quality of the batch material, stabilizing the redox state at the feeding port, facilitating subsequent melting, and avoiding the stimulation of glass defects. At the same time, since no condensed water is generated, the three-phase interface at the gable 8 and the pool wall 9 is destroyed, reducing the erosion of the gable 8 and the pool wall 9, and extending the service life.

[0019] Example 2

[0020] On the basis of Example 1, Figure 1 As shown, both the sleeve 1 and the sleeve 2 3 are truncated, and the end of the sleeve 1 with a smaller diameter is fixed on the retaining brick 2, and the end of the sleeve 2 3 with a larger diameter is connected to the sleeve 1. This shape design of the sleeve 1 and the sleeve 2 3 can provide a larger operating space for the screw feeder to be inserted into or withdrawn from the kiln from the feeding port.

Claims

1. A sealing device for a TFT glass carrier furnace charging port, characterized in that: The invention comprises a sleeve pipe 1 (1), one end of which is fixed on a retaining brick (2) at a kiln charging port, and the other end of which is detachably connected to a sleeve pipe 2 (3), and the end of the sleeve pipe 2 (3) is detachably fixed on a water cooling jacket (4) of a screw feeder; the screw feeder extends into the kiln from the charging port, and the sleeve pipe 1 (1) and the sleeve pipe 2 (3) are covered on the outside of the screw feeder.

2. The sealing device for the charging port of a TFT glass carrier furnace according to claim 1, characterized in that: The second sleeve (3) is in a corrugated shape.

3. The sealing device for the charging port of a TFT glass carrier furnace according to claim 1, characterized in that: The sleeve one (1) and the sleeve two (3) are both in a truncated cone shape, and the end of the sleeve one (1) with a smaller diameter is fixed on the retaining brick (2), while the end of the sleeve two (3) with a larger diameter is connected to the sleeve one (1).

4. The sealing device for the charging port of a TFT glass carrier furnace according to claim 1, characterized in that: The second sleeve (3) is connected to one end of the screw feeder water cooling jacket (4) and is provided with a sealing gasket (5), and the sealing gasket (5) is sleeved on the screw feeder water cooling jacket (4).

5. The sealing device for the charging port of a TFT glass carrier furnace according to claim 1, characterized in that: The sleeve one (1) and the sleeve two (3) are connected via bolts (6).

6. The sealing device for the charging port of a TFT glass carrier furnace according to claim 1, characterized in that: The second sleeve (3) is fixed on the water cooling jacket (4) of the screw feeder through a clamp (7).

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