A pool furnace combustion gun structure for TFT-LCD substrate glass

Abstract

The utility model discloses a kind of pool furnace combustion gun structures for TFT-LCD substrate glass, including combustion gun body, the combustion gun body is installed on the side wall of kiln, and the top of kiln is fixedly provided with dome top, while inlaying fixedly installed with combustion gun body on dome top, combustion gun body includes inlaying fixedly on the side wall of kiln combustion gun back cover, and combustion gun back cover middle part is inserted with combustion gun inner tube Fixed, while the side of combustion gun inner tube is provided with natural gas inlet. The pool furnace combustion gun structure for TFT-LCD substrate glass, by flame is flat after shooting glass liquid level combustion, improve flame thermal radiation efficiency, make flame close to material mountain and glass liquid increase heat radiation amount under the condition of not improving flow, rapidly melt material pile, reasonably adjust material mountain state, reduce the flame due to flue gas suction force causes flame to float, can avoid to material pile and glass liquid heat radiation small, cause raw material melt slow, material mountain is long, the condition of poor melting quality occurs.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of substrate glass production and processing, in particular to a pool furnace combustion gun structure for TFT-LCD substrate glass. BACKGROUND

[0002] In the production of TFT glass, raw materials are put into the kiln through the feeding port. In order to supply the heat required for melting, natural gas and oxygen mixed gas are burned through the combustion gun on both sides of the pool wall to heat the kiln. The heat radiation quickly melts the material pile formed by the raw materials.

[0003] In order to ensure that the fuel is fully burned in the flame space, the ejected flame must have a certain length and brightness, and have enough coverage area, closely adhere to the glass liquid surface and the material pile. The original design of the flame is flat, far away from the material pile and the liquid surface. In addition, the kiln structure causes the smoke to be extracted, which affects the flame. The smoke extraction causes the flame to float, and the heat radiation of the flame has little effect on the material pile and the glass liquid. This results in a high temperature in the kiln space, but the heat radiation of the flame is small, which causes the raw materials to melt slowly, the material pile to be long, and the melting quality to be poor.

[0004] To solve the above problems, through retrieval, a pool furnace combustion gun structure for TFT-LCD substrate glass is disclosed in CN118619519A. The document proposes that both sides of the kiln (1) are built with a first opening through the combustion gun brick (3). The first opening is detachably installed with a combustion gun assembly (4). The kiln (1) is provided with a hole at the top of the dome (2). The hole is vertically built with a second opening through the combustion gun brick (3). The second opening is detachably installed with another combustion gun assembly (4).

[0005] The above device can increase the heat radiation of the flame near the material pile and the glass liquid without improving the flow rate, quickly melting the material pile. However, the burner in this device ejects a columnar flame, which has concentrated firepower, resulting in the flame not being able to cover the entire melting pool, causing the raw materials to melt slowly, the material pile to be long, and the melting quality to be poor. Utility model content

[0006] The utility model aims to provide a pool furnace combustion gun structure for TFT-LCD substrate glass to solve the defects mentioned in the background art.

[0007] In order to achieve the above object, the utility model provides a kind of pool furnace combustion gun structure for TFT-LCD substrate glass, including combustion gun body, the combustion gun body is installed on the side wall of kiln, and the top of kiln is fixedly provided with dome top, while the dome top is inlayed and fixedly installed with combustion gun body, combustion gun body includes inlayed and fixed combustion gun back cover on the side wall of kiln, and combustion gun inner tube is fixed in the middle part of combustion gun back cover, while one side of combustion gun inner tube is provided with natural gas inlet, while the other side of combustion gun inner tube is fixedly installed with combustion gun head, combustion gun brick is wrapped outside combustion gun inner tube, and combustion gun nozzle is formed in the inside of combustion gun brick.

[0008] Preferably, the combustion gun inner tube is inserted into the combustion gun body, and the combustion gun head at the end of the combustion gun inner tube is arranged inside the combustion gun nozzle.

[0009] Preferably, the combustion gun head is conical, and a barrel nozzle is formed in the inside of the combustion gun head, and the combustion gun nozzle and the barrel nozzle are both flat.

[0010] Preferably, the combustion gun nozzle is isosceles trapezoidal in cross section, and the central axis of the combustion gun nozzle coincides with the central axis of the combustion gun inner tube.

[0011] Preferably, the combustion gun shell on the combustion gun body is sealed and connected to the combustion gun back cover by a sealing gasket.

[0012] Preferably, an oxygen inlet is arranged above the end of the combustion gun back cover, an outside oxygen channel is formed in the inside of the combustion gun brick, an inside oxygen channel is arranged in the inside of the combustion gun brick, and the inside and outside oxygen channels are both in communication with the oxygen inlet, the outside oxygen channel is flat, and the horizontal width of the outside oxygen channel is consistent with the horizontal width of the combustion gun nozzle.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The barrel nozzle formed in the inside of the combustion gun head is flat, and the combustion gun nozzle is also flat, so that the flame emitted from the combustion gun nozzle is flat flame, avoiding concentrated firepower, and the flat flame can spread over the molten pool, improving the glass melting speed; after the flame is changed to flat flame, the heat radiation is increased, the material pile melting is accelerated, the material pile on both sides of the feeding port is separated, the material pile direction trend is stabilized, the material pile running trend is improved, the material pile melting is reduced, and the liquid level is controlled.

[0015] 2. The utility model discloses a flat flame is shot out and then the liquid level is burnt, improves the thermal radiation efficiency of the flame, makes the flame close to the material mountain and the glass liquid increase the heat radiation under the condition of not improving the flow, melts the material pile quickly, adjusts the material mountain state reasonably, reduces the flame because of the smoke gas suction force and causes the flame to float, can avoid the heat radiation to the material pile and the glass liquid is small, causes the raw material to melt slowly, the material mountain is long, and the condition of the poor melting quality difference happens. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view schematic diagram of the utility model structure;

[0017] Figure 2 It is the schematic diagram of the fuel gun body;

[0018] Figure 3 It is Figure 2 The side view;

[0019] Figure 4 It is the schematic diagram of the fuel gun inner tube;

[0020] Figure 5 It is Figure 4 The bottom view.

[0021] Marked number in drawing: 1, kiln;2, arch top;3, fuel gun body;31, fuel gun rear cover;32, natural gas inlet;33, oxygen inlet;34, outer side oxygen passage;35, inner side oxygen passage;36, fuel gun inner tube;37, fuel gun head;371, gun tube spout;38, fuel gun spout;39, fuel gun brick. DETAILED DESCRIPTION

[0022] Please refer to Figures 1-5 The utility model provides a kind of pool furnace fuel gun structure for TFT-LCD substrate glass, including fuel gun body 3, fuel gun body 3 is installed on the side wall of kiln 1, and the top of kiln 1 is fixedly provided with arch top 2, while arch top 2 is inlayed and fixedly installed with fuel gun body 3, fuel gun body 3 includes inlayed and fixed fuel gun rear cover 31 on the side wall of kiln 1, and fuel gun rear cover 31 middle part is inserted and fixed with fuel gun inner tube 36, while one side of fuel gun inner tube 36 is provided with natural gas inlet 32, while the other side of fuel gun inner tube 36 is fixedly installed with fuel gun head 37, the outside of fuel gun inner tube 36 is wrapped with fuel gun brick 39, and fuel gun brick 39 is internally provided with fuel gun spout 38.

[0023] Working principle: the device belongs to a semi-premixed burner, natural gas and combustion air are premixed in the gun brick 39, but it has not yet reached complete mixing, after the outlet, the oxygen sprayed from the outside oxygen channel 34 is mixed again, and it is fully burned; because the gun barrel nozzle 371 inside the gun head 37 is set as a flat shape, and the gun nozzle 38 is also set as a flat shape, the flame sprayed from the gun nozzle 38 is a flat flame to avoid the concentration of firepower, and the flat flame can cover the molten pool to improve the glass melting speed; after the flame is changed to a flat flame, the heat radiation is increased, the material pile melting is accelerated, the material pile on both sides of the feeding port is separated, the material pile direction trend is stable, the material pile operation trend is improved, the material melting is reduced on both sides of the pool furnace, and the liquid level is stable and controlled;

[0024] After the gun body 3 is installed on the kiln 1 and the top 2, the flame is flat and shoots out to burn the glass liquid level, improves the heat radiation efficiency of the flame, and increases the heat radiation amount of the flame close to the material pile and the glass liquid without improving the flow rate, rapidly melts the material pile, reasonably adjusts the material pile state, reduces the flame caused by the smoke gas suction, avoids the small heat radiation of the material pile and the glass liquid, causes the slow melting of the raw material, the long material pile, and the poor melting quality, and the condition of the material pile and the glass liquid.

[0025] The structure of the gun is improved, the gun sleeve brick and the gun are improved, the gun head is designed as a duck-billed flat nozzle, the gun component is installed inside, the improved installation is flat, the flame is flat, the heat radiation efficiency of the flame is improved, the gun head is designed as a duck-billed flat nozzle, and the flat flame is obtained; the gun component and the gun brick component are improved, the flame is improved from a circular flame to a flat flame, the radiation area is large and flat, the fuel is fully burned, and the process requirements are met.

[0026] The gun inner tube 36 is inserted into the inside of the gun body 3, and the gun head 37 at the end of the gun inner tube 36 is arranged inside the gun nozzle 38.

[0027] As a preferred embodiment, the gun head 37 is conical, and the gun barrel nozzle 371 is arranged inside the gun head 37, and the gun nozzle 38 and the gun barrel nozzle 371 are both flat.

[0028] The cross section of the gun nozzle 38 is arranged as an isosceles trapezoid, and the central axis of the gun nozzle 38 coincides with the central axis of the gun inner tube 36.

[0029] As a preferred embodiment, the gun shell on the gun body 3 is sealed and connected with the gun rear cover 31 through a sealing gasket.

[0030] The oxygen inlet 33 is arranged on the top of the end of the rear cover 31 of the torch, and the outer oxygen passage 34 is arranged in the torch brick 39, and the inner oxygen passage 35 is arranged in the torch brick 39, and the inner oxygen passage 35 and the outer oxygen passage 34 are communicated with the oxygen inlet 33, the outer oxygen passage 34 is arranged in a flat shape, and the transverse width of the outer oxygen passage 34 is consistent with the transverse width of the torch nozzle 38.

Claims

1. A pool furnace combustion gun structure for TFT-LCD substrate glass, comprising a combustion gun body (3), characterized in that: The combustion gun body (3) is installed on the side wall of the kiln (1), and the top of the kiln (1) is fixedly provided with a dome top (2), and the dome top (2) is inlaidly and fixedly installed with the combustion gun body (3), the combustion gun body (3) comprises a combustion gun rear cover (31) inlaidly and fixedly installed on the side wall of the kiln (1), a combustion gun inner tube (36) is fixedly inserted in the middle of the combustion gun rear cover (31), one side of the combustion gun inner tube (36) is provided with a natural gas inlet (32), the other side of the combustion gun inner tube (36) is fixedly installed with a combustion gun head (37), the outer side of the combustion gun inner tube (36) is wrapped with a combustion gun brick (39), and the inside of the combustion gun brick (39) is provided with a combustion gun nozzle (38).

2. The pool furnace combustion gun structure for TFT-LCD substrate glass according to claim 1, characterized in that: The combustion gun inner tube (36) is inserted in the combustion gun body (3), and the combustion gun head (37) at the end of the combustion gun inner tube (36) is arranged in the combustion gun nozzle (38).

3. The pool furnace combustion gun structure for TFT-LCD substrate glass according to claim 2, characterized in that: The combustion gun head (37) is conical, and the inside of the combustion gun head (37) is provided with a gun barrel nozzle (371), and the combustion gun nozzle (38) and the gun barrel nozzle (371) are both flat.

4. The pool furnace combustion gun structure for TFT-LCD substrate glass according to claim 3, characterized in that: The combustion gun nozzle (38) is isosceles trapezoidal in cross section, and the central axis of the combustion gun nozzle (38) coincides with the central axis of the combustion gun inner tube (36).

5. The pool furnace combustion gun structure for TFT-LCD substrate glass according to claim 1, characterized in that: The combustion gun shell on the combustion gun body (3) is sealingly connected with the combustion gun rear cover (31) through a sealing gasket.

6. The pool furnace combustion gun structure for TFT-LCD substrate glass according to claim 5, characterized in that: An oxygen inlet (33) is installed above the end of the combustion gun rear cover (31), an outer oxygen channel (34) is formed in the combustion gun brick (39), an inner oxygen channel (35) is arranged in the combustion gun brick (39), the inner oxygen channel (35) and the outer oxygen channel (34) are both in communication with the oxygen inlet (33), the outer oxygen channel (34) is flat, and the transverse width of the outer oxygen channel (34) is consistent with the transverse width of the combustion gun nozzle (38).

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