Tool for adding iron into tin bath

Abstract

The utility model belongs to the technical field of float glass production equipment, and particularly discloses a tool for adding iron into a tin bath. The method is used for solving the problems that pure iron cannot be traced and the bottom of a glass plate is scratched in an existing method for directly throwing an iron block into tin liquor. Comprising a graphite box for placing an iron block, a fixing rod and an edge seal for sealing an inlet and an outlet of the graphite box on a tin bath, the edge seal is sleeved on the fixing rod, and the front end of the fixing rod is fixedly connected with the graphite box; a plurality of liquid inlet and outlet holes are formed in the side wall of the graphite box, and the arrangement positions of the liquid inlet and outlet holes are lower than the liquid level of tin liquid in the tin bath; the fixing rod comprises a hollow inner pipe and an outer pipe, a water return channel is arranged between the inner side wall of the outer pipe and the outer side wall of the inner pipe, and a water inlet channel is arranged on the inner side of the inner pipe. According to the utility model, iron blocks are prevented from drifting along with tin liquid, and the reaction progress of pure iron can be tracked.

Description

Technical Field

[0001] The utility model belongs to the technical field of float glass production equipment, in particular to a tool for adding iron into a tin bath. Background Art

[0002] During float glass production, the tin bath's liquid tin cannot be completely isolated from oxygen, resulting in a small amount of tin oxide. When the tin oxide comes into contact with the bottom surface of the glass sheet, tin seepage occurs, affecting the transparency and optical properties of the glass. It can also cause rainbowing during the subsequent tempering process, compromising the overall quality of the glass. Currently, adding an appropriate amount of metallic iron to the tin bath, taking advantage of iron's stronger chemical reducing properties than tin, reduces the oxidized tin and purifies the tin bath. This, in turn, reduces the amount of tin seepage onto the bottom surface of the glass sheet and mitigates the rainbowing phenomenon caused by tin seepage during tempering.

[0003] Currently, the common method of adding iron to the tin bath is to throw the iron block directly into the tin liquid. The iron block will move with the flow of the tin liquid. This method of adding iron has the following problems: (1) When the pure iron moves under the glass plate and reacts with the tin liquid, bubbles will be generated at the bottom of the plate; (2) When the pure iron moves to the outlet of the tin bath, the bottom of the plate will be scratched; (3) The added pure iron cannot be traced, and it is not clear whether the pure iron has reacted completely. Utility Model Content

[0004] The utility model aims to provide a tool for adding iron to a tin bath, which effectively solves the problem that the pure iron cannot be traced and the bottom of the glass plate is scratched in the existing method of directly throwing the iron block into the tin liquid.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A tool for adding iron to a tin bath comprises a graphite box for placing iron blocks, a fixing rod and an edge seal for sealing the inlet and outlet of the graphite box on the tin bath. The edge seal is provided on the fixing rod, and the front end of the fixing rod is fixedly connected to the graphite box.

[0007] The graphite box is a rectangular parallelepiped with an upper opening. A plurality of liquid inlet and outlet holes are opened on the side wall of the graphite box. The liquid inlet and outlet holes are arranged at positions lower than the liquid level of the tin liquid in the tin tank.

[0008] Furthermore, the fixing rod includes a hollow inner tube and an outer tube, the outer tube is sleeved on the outside of the inner tube, a return water channel is provided between the inner wall of the outer tube and the outer wall of the inner tube, a water inlet channel is provided on the inner side of the inner tube, a return water port is provided at the rear end of the outer tube, and a water inlet is provided at the rear end of the inner tube.

[0009] Furthermore, the front end of the fixing rod is bent downward, and a connecting ear is welded to the front end of the fixing rod, and the connecting ear is fixedly connected to the top end of the front side wall of the graphite box.

[0010] Furthermore, the rear side wall, left side wall and right side wall of the graphite box are all provided with liquid inlet and outlet holes, wherein the rear side wall is provided with two liquid inlet and outlet holes arranged in parallel on the left and right sides, and the left side wall and right side wall are each provided with a liquid inlet and outlet hole.

[0011] Furthermore, the liquid inlet and outlet holes are all arranged at the same level.

[0012] Compared with the prior art, the beneficial technical effects of the present invention are:

[0013] (1) The utility model places the iron block in a graphite box, which helps prevent the iron block from drifting with the tin liquid and can track the reaction progress of pure iron.

[0014] (2) The utility model provides liquid inlet and outlet holes on the graphite box, which is conducive to the replacement reaction between the iron block in the graphite box and the tin oxide in the tin liquid, and the iron oxide is fully integrated into the tin liquid in the tin tank through the flow of the tin liquid.

[0015] (3) When adding iron blocks to the graphite box, the utility model only needs to push and pull the fixed rod, and the fixed rod drives the side seal to move, so as to complete the opening and closing operations of the inlet and outlet of the graphite box. This is convenient and quick, thereby helping to reduce the pressure fluctuation of the tin bath and protect the tin liquid from oxidation due to the iron adding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the main view of the present utility model.

[0017] Figure 2 yes Figure 1 Top view of the graphite cartridge.

[0018] Explanation of the accompanying reference numerals: graphite box - 1; fixing rod - 2; side seal - 3; liquid inlet and outlet hole - 4; return water port - 5; water inlet - 6; front side wall - 7; rear side wall - 8; connecting ear - 9. DETAILED DESCRIPTION

[0019] Example 1: Figure 1 As shown, the tool for adding iron to a tin bath comprises a graphite box 1 for placing iron blocks, a fixing rod 2, and a side seal 3 for sealing the inlet and outlet of the graphite box on the tin bath. The side seal 3 is mounted on the fixing rod 2, the front end of which is fixedly connected to the graphite box 1. The graphite box 1 is a rectangular parallelepiped with an upper opening. Multiple liquid inlet and outlet ports 4 are provided on its sidewalls. These ports 4 are positioned below the level of the liquid tin in the tin bath.

[0020] In this embodiment, the fixing rod 2 comprises a hollow inner tube and an outer tube, with the outer tube sheathed over the inner tube. A water return channel is provided between the inner and outer walls of the outer tube, while a water inlet channel is provided on the inner side of the inner tube. A water return port 5 is provided at the rear end of the outer tube, while a water inlet port 6 is provided at the rear end of the inner tube. Water cooling effectively prevents high-temperature damage to the fixing rod 2.

[0021] In this embodiment, if Figure 1 and Figure 2 As shown, the front end of the fixing rod 2 is bent downward, and a connecting ear 9 is welded to the front end of the fixing rod 2 . The connecting ear 9 is fixedly connected to the top end of the front side wall 7 of the graphite box 1 .

[0022] In this embodiment, liquid inlet and outlet holes 4 are provided on the rear sidewall 8, left sidewall, and right sidewall of the graphite cartridge 1. Two liquid inlet and outlet holes 4 are located side by side on the rear sidewall 8, and one is located on each of the left and right sides. All liquid inlet and outlet holes 4 are positioned at the same level. The graphite cartridge 1 is approximately 90 mm tall, the liquid inlet and outlet holes 4 are located at a height of approximately 40 mm, and the tin liquid depth at the iron addition location is 60 mm. Therefore, the tin liquid can submerge the liquid inlet and outlet holes 4. When the bottom wall of the graphite cartridge 1 contacts the bottom brick of the tin bath, the liquid inlet and outlet holes 4 are located just below the tin liquid level, facilitating the complete fusion of the iron and tin liquids.

[0023] The specific operating process of this embodiment is as follows: a fixed rod 2 feeds a graphite box 1 containing an iron block into the tin bath through the graphite box inlet and outlet on the tin bath, and then the graphite box inlet and outlet are sealed with a side seal 3. Once in the tin bath, the bottom of the graphite box 1 contacts the bottom brick of the tin bath. At this point, the liquid inlet and outlet holes 4 on the graphite box 1 are just below the tin liquid level. The hot tin liquid enters the graphite box 1 through the liquid inlet and outlet holes 4. The iron block in the graphite box 1 undergoes a replacement reaction with the tin oxide in the tin liquid. As the tin liquid flows, the iron oxide is fully dissolved into the tin liquid in the tin bath.

[0024] The present invention helps prevent the iron blocks from drifting with the tin liquid by placing them in the graphite box 1, and can also track the reaction progress of pure iron. When the iron blocks in the graphite box 1 have finished reacting and new iron blocks need to be added, it is only necessary to pull the fixed rod 2 backward to separate the side seal 3 from the graphite box inlet and outlet, and then put the new iron blocks into the graphite box 1, and finally push the fixed rod 2 forward to seal the graphite box inlet and outlet. Since the side seal 3 is mounted on the fixed rod 2, the opening and closing operations of the graphite box inlet and outlet can be completed by simply pushing and pulling the fixed rod 2, which is convenient and quick, thereby helping to reduce pressure fluctuations in the tin bath and protecting the tin liquid from oxidation due to the iron addition operation. The number and frequency of iron blocks added should be calculated based on the total tonnage of tin liquid in the tin bath and the rate of increase of the iron content ppm in the tin liquid.

[0025] Parts not described in the present invention can be realized by adopting or drawing on existing technologies.

[0026] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A tool for adding iron to a tin bath, characterized in that: It includes a graphite box for placing iron blocks, a fixing rod and an edge seal for sealing the inlet and outlet of the graphite box on the tin bath. The edge seal is provided on the fixing rod, and the front end of the fixing rod is fixedly connected to the graphite box. The graphite box is a rectangular parallelepiped with an upper opening. A plurality of liquid inlet and outlet holes are provided on the side wall of the graphite box. The liquid inlet and outlet holes are arranged at positions lower than the liquid level of the tin liquid in the tin tank.

2. The tool for adding iron to a tin bath according to claim 1, characterized in that The fixing rod includes a hollow inner tube and an outer tube, the outer tube is sleeved on the outside of the inner tube, a return water channel is provided between the inner wall of the outer tube and the outer wall of the inner tube, a water inlet channel is provided on the inner side of the inner tube, a return water port is provided at the rear end of the outer tube, and a water inlet is provided at the rear end of the inner tube.

3. The tool for adding iron to a tin bath according to claim 2, characterized in that: The front end of the fixing rod is bent downward, and a connecting ear is welded to the front end of the fixing rod. The connecting ear is fixedly connected to the top end of the front side wall of the graphite box.

4. The tool for adding iron to a tin bath according to claim 3, characterized in that Liquid inlet and outlet holes are provided on the rear side wall, the left side wall and the right side wall of the graphite box, wherein two liquid inlet and outlet holes are provided on the rear side wall in parallel, and one liquid inlet and outlet hole is provided on the left side wall and the right side wall respectively.

5. The tool for adding iron to a tin bath according to claim 4, characterized in that: The liquid inlet and outlet holes are all arranged at the same level.

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