Gas supply device and tin bath protection system
By mixing sulfur dioxide gas with inert gas through a mixer, a stable low-concentration mixed gas is formed, which solves the problem of excessively high local sulfur dioxide concentration in the slag box during float glass production, ensuring glass quality and production stability.
Patent Information
- Application Number
- CN202522132740.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-09
AI Technical Summary
In float glass production, especially in the production of ultra-thin electronic glass, the amount of sulfur dioxide gas used is relatively small. Directly introducing it into the slag box can easily lead to excessively high local sulfur dioxide concentrations in the slag box, affecting glass quality and production stability.
A mixer is used to mix sulfur dioxide gas with an inert gas (such as nitrogen or helium) to form a stable, low-concentration mixed gas, which is then transported to the slag box to dilute the sulfur dioxide gas concentration and reduce the risk of excessively high local concentrations.
This achieved stability in the concentration of sulfur dioxide gas in the slag box, ensuring effective treatment of residues on the glass surface and improving glass quality and production stability.
Smart Images
Figure CN224677970U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of glass production equipment technology, and in particular to a gas supply device and a tin bath protection system. Background Technology
[0002] In float glass production, glass ribbons are formed in a tin bath using molten tin as a carrier. When the glass ribbon exits the tin bath, trace amounts of tin or tin oxides may remain on the glass surface, affecting the quality of the finished glass. To remove this residual tin or tin oxides, sulfur dioxide gas is typically introduced into the slag box at the tin bath outlet. As an oxidizing gas, sulfur dioxide reacts with the tin and tin compounds on the glass surface to form stable tin salts. These tin salts can be removed in subsequent processing, preventing tin residue from causing spots, hazy contamination, or decreased optical performance on the glass surface. Furthermore, the oxidizing atmosphere of sulfur dioxide reduces the oxidative volatilization of molten tin at high temperatures, indirectly protecting the tin bath environment and maintaining production stability.
[0003] In the production of some special glass, such as ultra-thin electronic glass, which is also produced using the float glass process, the drawing amount is smaller and the glass strip is thinner compared to the traditional float glass production process. The amount of sulfur dioxide used is relatively small. If sulfur dioxide is directly introduced into the slag box, there is a risk of excessively high local sulfur dioxide concentration in the slag box. Utility Model Content
[0004] The main purpose of this invention is to provide a gas supply device and a tin bath protection system, which aims to provide a stable low concentration of sulfur dioxide gas to the slag box.
[0005] To achieve the above objectives, the gas supply device proposed in this utility model includes: A mixer, the mixer having an internal cavity, and the mixer having a first gas inlet, a second gas inlet, and a gas outlet, all of which are connected to the cavity; the gas outlet is used to communicate with a slag box. A sulfur dioxide gas pipeline, one end of which is connected to the first gas inlet for introducing sulfur dioxide gas into the first gas inlet; and An inert gas pipeline, one end of which is connected to the second gas inlet, is used to input inert gas into the second gas inlet so that the gas outlet outputs a mixture of sulfur dioxide gas and inert gas.
[0006] In one embodiment, sulfur dioxide gas is introduced into the first gas inlet along a first direction, and inert gas is introduced into the second gas inlet along a second direction, wherein the first direction and the second direction intersect.
[0007] In one embodiment, the gas outlet outputs mixed gas along the second direction and is positioned opposite to the second gas inlet.
[0008] In one embodiment, the mixer includes a body and a pipe, the receiving cavity is located inside the body, the pipe includes an input section and an output section, one end of the input section is connected to the sulfur dioxide gas pipeline and connected to the body, the output section is located inside the receiving cavity, the output section is connected to the other end of the input section, and the first gas inlet is opened in the output section.
[0009] In one embodiment, the output segment extends along the second direction and is disposed toward the second gas inlet, wherein the first gas inlet is opened on the peripheral side of the output segment.
[0010] In one embodiment, there are multiple first gas inlets, which are spaced apart along the axial direction of the output section on the peripheral side of the output section.
[0011] In one embodiment, the opening size of the second gas inlet is larger than the opening size of the first gas inlet.
[0012] In one embodiment, the gas supply device further includes a sulfur dioxide gas cylinder, an inert gas cylinder, and a pressure regulating valve. The end of the sulfur dioxide gas pipeline away from the first gas inlet is connected to the sulfur dioxide gas cylinder, and the end of the inert gas pipeline away from the second gas inlet is connected to the inert gas cylinder. The pressure regulating valve is provided on both the sulfur dioxide gas pipeline and the inert gas pipeline.
[0013] In one embodiment, the gas supply device further includes a flow control valve, which is provided on both the sulfur dioxide gas pipeline and the inert gas pipeline; And / or, the gas supply device further includes a one-way valve, and the one-way valve is provided on the inert gas pipeline; And / or, the gas supply device further includes a sulfur dioxide gas buffer tank, one end of which is connected to the end of the sulfur dioxide gas pipeline away from the first gas inlet, and the other end of which is connected to the sulfur dioxide gas tank.
[0014] This utility model also proposes a tin bath protection system, including a slag box, a mixed gas pipeline and a gas supply device as described above, wherein one end of the mixed gas pipeline is connected to the gas outlet and the other end of the mixed gas pipeline is connected to the slag box.
[0015] In the technical solution of this utility model, the mixer provides an internal cavity for containing and mixing the gases input from the first gas inlet and the second gas inlet. The first gas inlet outputs sulfur dioxide gas to the cavity through a sulfur dioxide gas pipeline to ensure the supply of sulfur dioxide gas. The second gas inlet outputs inert gas to the cavity through an inert gas pipeline. Since the inert gas does not react with the sulfur dioxide gas, using inert gas to carry the sulfur dioxide gas can dilute the sulfur dioxide gas concentration, thereby forming a mixed gas with a stable low concentration of sulfur dioxide gas. The mixed gas is then applied to the slag box to make the sulfur dioxide gas concentration in the slag box more stable, reducing the risk of excessively high local sulfur dioxide gas concentration in the slag box, thus meeting the requirements for the preparation of special glass and enabling more stable and effective treatment of residues on the glass surface. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 A schematic diagram of the structure of a mixer in an embodiment of the gas supply device provided by this utility model; Figure 2 A schematic diagram of an embodiment of the tin bath protection system provided by this utility model.
[0018] Explanation of icon numbers: 100. Tin bath protection system; 1. Mixer; 11. Receptacle cavity; 12. First gas inlet; 13. Second gas inlet; 14. Gas outlet; 15. Main body; 16. Pipeline; 161. Input section; 162. Output section; 2. Sulfur dioxide gas pipeline; 3. Inert gas pipeline; 4. Sulfur dioxide gas tank; 5. Inert gas tank; 6. Pressure regulating valve; 7. Flow control valve; 8. Check valve; 9. Sulfur dioxide gas buffer tank; 10. Slag box; 17. Mixed gas pipeline; 18. Metal hose; 19. Inlet valve; 20. Main valve; 21. Main pressure gauge; 22. Pre-pressure shut-off valve; 23. Post-pressure shut-off valve; 24. Post-pressure gauge; 25. Flow meter; 26. Flow shut-off valve; 27. Pressure regulating bypass valve.
[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0023] In float glass production, glass ribbons are formed in a tin bath using molten tin as a carrier. When the glass ribbon exits the tin bath, trace amounts of tin or tin oxides may remain on the glass surface, affecting the quality of the finished glass. To remove this residual tin or tin oxides, sulfur dioxide gas is typically introduced into the slag box at the tin bath outlet. As an oxidizing gas, sulfur dioxide reacts with the tin and tin compounds on the glass surface to form stable tin salts. These tin salts can be removed in subsequent processing, preventing tin residue from causing spots, hazy contamination, or decreased optical performance on the glass surface. Furthermore, the oxidizing atmosphere of sulfur dioxide reduces the oxidative volatilization of molten tin at high temperatures, indirectly protecting the tin bath environment and maintaining production stability.
[0024] In the production of some special glass, such as ultra-thin electronic glass, which is also produced using the float glass process, the drawing amount is smaller and the glass strip is thinner compared to the traditional float glass production process. The amount of sulfur dioxide used is relatively small. If sulfur dioxide is directly introduced into the slag box, there is a risk of excessively high local sulfur dioxide concentration in the slag box.
[0025] To solve this technical problem, this utility model proposes a gas supply device that can provide a stable low concentration of sulfur dioxide gas to the slag box.
[0026] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the gas supply device includes a mixer 1, a sulfur dioxide gas pipeline 2, and an inert gas pipeline 3. The mixer 1 has a receiving cavity 11 inside. The mixer 1 has a first gas inlet 12, a second gas inlet 13, and a gas outlet 14, all of which are connected to the receiving cavity 11. The gas outlet 14 is used to connect to the slag box 10. One end of the sulfur dioxide gas pipeline 2 is connected to the first gas inlet 12 and is used to input sulfur dioxide gas into the first gas inlet 12. One end of the inert gas pipeline 3 is connected to the second gas inlet 13 and is used to input inert gas into the second gas inlet 13, so that the gas outlet 14 outputs a mixture of sulfur dioxide gas and inert gas.
[0027] In the technical solution of this utility model, the mixer 1 provides an internal cavity 11 for containing and mixing the gases input from the first gas inlet 12 and the second gas inlet 13. The first gas inlet 12 outputs sulfur dioxide gas to the cavity 11 through the sulfur dioxide gas pipeline 2 to ensure the supply of sulfur dioxide gas. The second gas inlet 13 outputs inert gas to the cavity 11 through the inert gas pipeline 3. Since the inert gas does not react with the sulfur dioxide gas, using the inert gas as the carrier gas for sulfur dioxide gas can dilute the concentration of sulfur dioxide gas, thereby forming a mixed gas with a stable low concentration of sulfur dioxide gas. The mixed gas is then applied to the slag box 10 to make the concentration of sulfur dioxide gas in the slag box 10 more stable, reducing the risk of excessively high local sulfur dioxide gas concentration in the slag box 10, thereby meeting the requirements for the preparation of special glass and enabling more stable and effective treatment of residues on the glass surface.
[0028] In one embodiment of this utility model, the inert gas used is nitrogen. In another embodiment of this utility model, the inert gas used may also be helium or other inert gases.
[0029] In one embodiment of the present invention, sulfur dioxide gas is introduced into the first gas inlet 12 along the first direction, and inert gas is introduced into the second gas inlet 13 along the second direction, wherein the first direction and the second direction intersect.
[0030] Specifically, please refer to Figure 1 In one embodiment of this utility model, the second direction is the left-right direction, that is, the inert gas is input from left to right, and the first direction is the up-down direction, that is, the sulfur dioxide gas is input from top to bottom or from bottom to top. It can be understood that the movement direction of the inert gas is perpendicular to the movement direction of the sulfur dioxide gas, so that the two can be fully mixed together to form a mixed gas with a stable low concentration of sulfur dioxide gas. Then the mixed gas is applied to the slag box 10 to make the sulfur dioxide gas concentration in the slag box 10 more stable and reduce the risk of excessively high local sulfur dioxide gas concentration in the slag box 10.
[0031] In another embodiment of this utility model, the second direction is the left-right direction, that is, the inert gas is input from left to right, and the first direction is oblique, that is, the sulfur dioxide gas is input from the upper left to the lower right or from the lower left to the upper right. It can be understood that the movement direction of the inert gas and the movement direction of the sulfur dioxide gas have a certain angle but are not perpendicular to each other. That is, the movement direction of the inert gas and the movement direction of the sulfur dioxide gas are not parallel. This can also make the two mix together more fully, thereby forming a mixed gas with a stable low concentration of sulfur dioxide gas. Then the mixed gas is applied to the slag box 10 to make the sulfur dioxide gas concentration in the slag box 10 more stable and reduce the risk of excessively high local sulfur dioxide gas concentration in the slag box 10.
[0032] In another embodiment of this utility model, the gas outlet 14 outputs the mixed gas along the second direction and is arranged opposite to the second gas inlet 13. It can be understood that the output direction of the gas outlet 14 is the same as the input direction of the second gas inlet 13. After the inert gas and sulfur dioxide gas are mixed, the mixed gas can be directly output from the gas outlet 14 without needing to go through a winding path. The overall structure is simpler and the space occupied by the mixer 1 is reduced.
[0033] In another embodiment of this utility model, the output direction of the gas outlet 14 is different from the input direction of the second gas inlet 13. The specific setting can be changed according to the actual situation, and will not be described in detail here.
[0034] In one embodiment of this utility model, please refer to Figure 1 The mixer 1 includes a main body 15 and a pipe 16. The receiving cavity 11 is located inside the main body 15. The pipe 16 includes an input section 161 and an output section 162. One end of the input section 161 is connected to the sulfur dioxide gas pipeline 2 and connected to the main body 15. The output section 162 is located inside the receiving cavity 11 and is connected to the other end of the input section 161. The first gas inlet 12 is opened in the output section 162.
[0035] Specifically, pipe 16 is used to transport sulfur dioxide gas. One end of input section 161 is connected to sulfur dioxide gas pipeline 2, and the other end of input section 161 is connected to main body 15 and output section 162 to ensure that sulfur dioxide gas can be input into the receiving cavity 11. The first gas inlet 12 is located in output section 162. Since output section 162 is located in receiving cavity 11, compared with the first gas inlet 12 being located on the inner wall of main body 15, the first gas inlet 12 can be understood as being located in the middle of receiving cavity 11, which can mix with inert gas more evenly and quickly, ensuring that the concentration of sulfur dioxide gas in the mixed gas in receiving cavity 11 is uniform and stable. Gas outlet 14 can output a more stable mixed gas, and then the mixed gas is applied to slag box 10 to make the concentration of sulfur dioxide gas in slag box 10 more stable, reducing the risk of excessively high local sulfur dioxide gas concentration in slag box 10.
[0036] In one embodiment of the present invention, the output section 162 extends along the second direction and is disposed toward the second gas inlet 13, and the first gas inlet 12 is opened on the peripheral side of the output section 162.
[0037] Specifically, please refer to Figure 1 The input section 161 is fixedly connected to the main body 15. One end of the input section 161 is connected to the sulfur dioxide gas pipeline 2, and the other end of the input section 161 extends into the receiving cavity 11. Then it bends to the left and connects to the output section 162. The output section 162 extends in the left and right direction. The right end of the output section 162 is connected to the input section 161, and the left end of the output section 162 is a closed structure. The first gas inlet 12 is located near the closed structure. The first gas inlet 12 is opened on the peripheral side of the output section 162. The sulfur dioxide gas input through the first gas inlet 12 can be mixed with the inert gas more evenly and quickly, ensuring that the concentration of sulfur dioxide gas in the mixed gas in the receiving cavity 11 is uniform and stable.
[0038] More specifically, the second gas inlet 13 inputs inert gas from left to right, and the output section 162 has first gas inlets 12 in both the front-back and up-down directions to ensure that the movement direction of the inert gas is perpendicular to the movement direction of the sulfur dioxide gas, so that the two can be fully mixed together to form a mixed gas with a stable low concentration of sulfur dioxide gas.
[0039] In one embodiment of this utility model, the axis of the output section 162, the axis of the second gas inlet 13, and the axis of the receiving cavity 11 coincide, so that the sulfur dioxide gas input by the first gas inlet 12 can be mixed with the inert gas more evenly and quickly, ensuring that the concentration of sulfur dioxide gas in the mixed gas in the receiving cavity 11 is uniform and stable.
[0040] In one embodiment of this utility model, please refer to Figure 1There are multiple first gas inlets 12, and the multiple first gas inlets 12 are spaced apart on the peripheral side of the output section 162 along the axial direction of the output section 162.
[0041] Specifically, by setting multiple first gas inlets 12, the mixing of sulfur dioxide gas and inert gas can be better promoted, so that the two can be fully mixed together to form a mixed gas with a stable low concentration of sulfur dioxide gas.
[0042] In one embodiment of the present invention, the opening size of the second gas inlet 13 is larger than the opening size of the first gas inlet 12.
[0043] Specifically, this setup ensures that the flow rate of the inert gas is greater than that of the sulfur dioxide gas, maintaining a low concentration of sulfur dioxide in the mixed gas. The jet effect generated by the large flow rate of inert gas provides better stirring and mixing, guaranteeing thorough mixing of the inert gas and sulfur dioxide.
[0044] In one embodiment of this utility model, please refer to Figure 2 The gas supply device also includes a sulfur dioxide gas tank 4, an inert gas tank 5, and a pressure regulating valve 6. The end of the sulfur dioxide gas pipeline 2 that is away from the first gas inlet 12 is connected to the sulfur dioxide gas tank 4, and the end of the inert gas pipeline 3 that is away from the second gas inlet 13 is connected to the inert gas tank 5. Both the sulfur dioxide gas pipeline 2 and the inert gas pipeline 3 are equipped with pressure regulating valves 6.
[0045] Specifically, by setting the pressure regulating valve 6, it can be ensured that the gases in the sulfur dioxide gas pipeline 2 and the inert gas pipeline 3 have stable pressure, ensuring that both can stably enter the receiving cavity 11 for mixing.
[0046] In one embodiment of this utility model, the pressure regulating valve 6 is a self-operated pressure regulating valve, which can rely on the pressure and temperature of the medium flowing through the valve as the driving energy, and does not require an external power supply or secondary instruments, making it more convenient to use.
[0047] In one embodiment of this utility model, please refer to Figure 2 The gas supply device also includes a flow control valve 7, which is installed on both the sulfur dioxide gas pipeline 2 and the inert gas pipeline 3.
[0048] Specifically, by setting the flow control valve 7, the gas flow in the sulfur dioxide gas pipeline 2 and the inert gas pipeline 3 can be better controlled, ensuring that both can stably enter the receiving cavity 11 for mixing.
[0049] In one embodiment of this utility model, the flow control valve 7 is a needle valve, which can more accurately regulate the gas flow in the sulfur oxide gas pipeline and the inert gas pipeline 3.
[0050] In one embodiment of this utility model, please refer to Figure 2 The gas supply device also includes a one-way valve 8, which is installed on the inert gas pipeline 3.
[0051] Specifically, by setting a one-way valve 8, sulfur dioxide gas can be prevented from entering the inert gas pipeline 3 in reverse, thus avoiding pollution.
[0052] In one embodiment of this utility model, please refer to Figure 2 The gas supply device also includes a sulfur dioxide gas buffer tank 9. One end of the sulfur dioxide gas buffer tank 9 is connected to the end of the sulfur dioxide gas pipeline 2 that is far from the first gas inlet 12, and the other end of the sulfur dioxide gas buffer tank 9 is connected to the sulfur dioxide gas tank 4.
[0053] Specifically, by setting up a sulfur dioxide gas buffer tank 9, it is possible to ensure that sulfur dioxide is fully vaporized and to stabilize the pressure.
[0054] In one embodiment of this utility model, please refer to Figure 2 A metal hose 18 is provided between the sulfur dioxide gas tank 4 and the sulfur dioxide gas buffer tank 9. An inlet valve 19 is provided on the sulfur dioxide gas pipeline 2 between the metal hose 18 and the sulfur dioxide gas buffer tank 9. On the sulfur dioxide gas pipeline 2 between the sulfur dioxide gas buffer tank 9 and the mixer 1, a main valve 20, a main pressure gauge 21, a pressure regulating pre-shut-off valve 22, a pressure regulating valve 6, a pressure regulating post-shut-off valve 23, a pressure regulating post-pressure gauge 24, a flow control valve 7, a flow meter 25, and a flow shut-off valve 26 are provided in sequence. A pressure regulating bypass valve 27 is also provided between the main valve 20 and the flow control valve 7. With this configuration, sulfur dioxide gas with stable pressure, stable flow rate, and stable concentration can be input into the mixer 1.
[0055] In one embodiment of this utility model, please refer to Figure 2 On the inert gas pipeline 3 between the inert gas tank 5 and the mixer 1, there are sequentially installed a main valve 20, a main pressure gauge 21, a pressure regulating shut-off valve 22, a pressure regulating valve 6, a pressure regulating shut-off valve 23, a pressure regulating pressure gauge 24, a flow control valve 7, a flow meter 25, a flow shut-off valve 26, and a check valve 8. A pressure regulating bypass valve 27 is also provided between the main valve 20 and the flow control valve 7. With this arrangement, an inert gas with stable pressure, stable flow rate, and stable concentration can be input into the mixer 1.
[0056] Please see Figure 2The present invention also proposes a tin bath protection system 100. In one embodiment of the present invention, the tin bath protection system 100 includes a slag box 10, a mixed gas pipeline 17 and a gas supply device as described above. One end of the mixed gas pipeline 17 is connected to the gas outlet 14, and the other end of the mixed gas pipeline 17 is connected to the slag box 10.
[0057] The specific structure of the gas supply device is as described in the above embodiments. Since the tin bath protection system 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0058] In one embodiment of this utility model, please refer to Figure 2 On the mixed gas pipeline 17 between the mixer 1 and the slag box 10, a flow control valve 7, a flow meter 25, a flow cut-off valve 26 and a metal hose 18 are sequentially installed. With this arrangement, a mixed gas with stable pressure, stable flow and stable concentration can be input into the slag box 10.
[0059] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A gas supply device, characterized in that, include: A mixer, the mixer having an internal cavity, and the mixer having a first gas inlet, a second gas inlet, and a gas outlet, all of which are connected to the cavity; the gas outlet is used to communicate with a slag box. A sulfur dioxide gas pipeline, one end of which is connected to the first gas inlet for introducing sulfur dioxide gas into the first gas inlet; and An inert gas pipeline, one end of which is connected to the second gas inlet, is used to input inert gas into the second gas inlet so that the gas outlet outputs a mixture of sulfur dioxide gas and inert gas.
2. The gas supply device as described in claim 1, characterized in that, The first gas inlet supplies sulfur dioxide gas in a first direction, and the second gas inlet supplies inert gas in a second direction, wherein the first direction and the second direction intersect.
3. The gas supply device as described in claim 2, characterized in that, The gas outlet outputs mixed gas along the second direction and is positioned opposite to the second gas inlet.
4. The gas supply device as described in claim 2, characterized in that, The mixer includes a main body and a pipe. The receiving cavity is located inside the main body. The pipe includes an input section and an output section. One end of the input section is connected to the sulfur dioxide gas pipeline and connected to the main body. The output section is located inside the receiving cavity and is connected to the other end of the input section. The first gas inlet is opened in the output section.
5. The gas supply device as described in claim 4, characterized in that, The output section extends along the second direction and is disposed toward the second gas inlet, wherein the first gas inlet is opened on the peripheral side of the output section.
6. The gas supply device as described in claim 4, characterized in that, The number of first gas inlets is multiple, and the multiple first gas inlets are spaced apart along the axial direction of the output section on the peripheral side of the output section.
7. The gas supply device as described in any one of claims 1 to 6, characterized in that, The opening size of the second gas inlet is larger than the opening size of the first gas inlet.
8. The gas supply device as described in any one of claims 1 to 6, characterized in that, The gas supply device further includes a sulfur dioxide gas cylinder, an inert gas cylinder, and a pressure regulating valve. The end of the sulfur dioxide gas pipeline furthest from the first gas inlet is connected to the sulfur dioxide gas cylinder, and the end of the inert gas pipeline furthest from the second gas inlet is connected to the inert gas cylinder. The pressure regulating valve is provided on both the sulfur dioxide gas pipeline and the inert gas pipeline.
9. The gas supply device as described in claim 8, characterized in that, The gas supply device also includes a flow control valve, and the flow control valve is provided on both the sulfur dioxide gas pipeline and the inert gas pipeline; And / or, the gas supply device further includes a one-way valve, and the one-way valve is provided on the inert gas pipeline; And / or, the gas supply device further includes a sulfur dioxide gas buffer tank, one end of which is connected to the end of the sulfur dioxide gas pipeline away from the first gas inlet, and the other end of which is connected to the sulfur dioxide gas tank.
10. A solder bath protection system, characterized in that, It includes a slag box, a mixed gas pipeline, and a gas supply device as described in any one of claims 1 to 9, wherein one end of the mixed gas pipeline is connected to the gas outlet, and the other end of the mixed gas pipeline is connected to the slag box.