Combustible gas burner

Abstract

The utility model discloses a combustible gas burner, including support, the inside of support is provided with mixing chamber, one side fixedly connected with gas regulating valve of support, the input of gas regulating valve is provided with combustible gas joint, the inside fixedly connected with gas spray head of support in mixing chamber. The utility model relates to metal casting technical field, solved in the prior art, adopt the mode of roasting to the metal liquid flow tank and carry out preheating, in the roasting process, and it is easy to cause the flow tank deformation or damage because of flame temperature too high, and further cause, increase production cost and maintenance difficulty, at the same time, the liquid metal is easy to lose a large amount of heat in the flowing process, need through the equipment such as the improvement of heat preservation furnace, degassing furnace, filter box heater to supplement in normal production process, but when these equipment appear the fault and are not repaired, will directly influence production, even cause production failure, influence the continuity of production and product quality problem.

Description

Technical Field

[0001] This utility model relates to the field of metal casting technology, specifically to a combustible gas burner. Background Technology

[0002] In the metal casting process, the temperature of the laminar flow system and filtration system is relatively low (close to the ambient temperature) before production begins. Additionally, moisture may be introduced into the laminar flow system and filtration system during the application of non-stick aluminum coating. During normal production, the temperature of the liquid metal reaches between 690°C and 720°C. Temperatures that are too high or too low will affect normal production. Lower refractory material temperatures will absorb a large amount of heat from the liquid metal, preventing it from flowing properly to the crystallizer and causing production failure. Furthermore, moisture in the refractory coating not only affects production and product quality but can even lead to safety accidents. To ensure... In normal production, it is necessary to dry the moisture in the refractory coating and preheat the flow channel. In the existing technology, baking is used to preheat the molten metal flow channel. During the baking process, the flame temperature is too high, which can cause deformation or damage to the flow channel, increasing production costs and maintenance difficulty. At the same time, molten metal easily loses a lot of heat during the flow process. In normal production, it is necessary to supplement the heat by increasing the heat of the holding furnace, degassing furnace, filter box heater, etc. However, if these equipment malfunctions and are not repaired, it will directly affect production, or even cause production failure, affecting the continuity of production and product quality.

[0003] Therefore, there is an urgent need for a combustible gas burner that can avoid overheating of the flow channel and provide auxiliary heating for liquid metal. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a combustible gas burner that solves the problem of preheating the molten metal flow channel by baking. In the existing technology, the flow channel is easily deformed or damaged due to excessively high flame temperature during the baking process, which increases production costs and maintenance difficulty. At the same time, molten metal easily loses a lot of heat during the flow process, which requires replenishment by increasing the heat of the holding furnace, degassing furnace, filter box heater, and other equipment during normal production. However, if these equipment malfunctions and are not repaired, it will directly affect production and even cause production failure, affecting the continuity of production and product quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combustible gas burner includes a support frame, a mixing chamber is provided inside the support frame, a gas regulating valve is fixedly connected to one side of the support frame, a combustible gas connector is provided at the input end of the gas regulating valve, a gas nozzle is fixedly connected inside the mixing chamber of the support frame, the gas nozzle is connected to the output end of the gas regulating valve, an air inlet is provided at the bottom of the support frame, the air inlet is connected to the mixing chamber, an inner gun barrel is fixedly connected to the inner wall of the support frame away from the mixing chamber, an outer gun barrel is fitted to the outer wall of the inner gun barrel, the outer gun barrel is fixedly connected to the support frame by screws, an outer gun extension tube is provided at the end of the outer gun barrel away from the support frame, and a flame disperser is fixedly connected to the end of the outer gun extension tube away from the outer gun barrel.

[0006] Preferably, a first connecting sleeve is fixedly connected to the outer wall of the outer gun barrel at the end away from the support, and a second connecting sleeve is fixedly connected to the outer wall of the outer gun extension tube at the end away from the flame disperser. The second connecting sleeve is threadedly connected to the first connecting sleeve. The inner walls of both the outer gun barrel and the outer gun extension tube are fitted with transition inner lining tubes. The outer wall of the transition inner lining tube is provided with a limiting protrusion, which is fitted and connected to the outer gun barrel and the outer gun extension tube respectively.

[0007] Preferably, a first fixing screw is fixedly connected to the bottom of one end of the inner barrel near the bracket. The first fixing screw passes through the air inlet. An arc-shaped baffle is fitted to the bottom of the outer wall of the bracket. An adjustment groove is provided at the bottom of the arc-shaped baffle. The adjustment groove is fitted to the first fixing screw. A wing nut is threaded to the end of the first fixing screw. The wing nut is fitted to the arc-shaped baffle.

[0008] Preferably, the outer wall of the flame disperser is fitted with a disperser cover, and the disperser cover is fixedly connected to the outer gun extension tube by a second fixing bolt.

[0009] Preferably, a combined sealing gasket is provided on the side of the bracket and the gas regulating valve that are close to each other.

[0010] This utility model provides a combustible gas burner. It offers the following advantages: Through the coordination of a support frame, mixing chamber, gas regulating valve, combustible gas connector, gas nozzle, air inlet, inner gun barrel, outer gun barrel, outer gun extension tube, and flame disperser, the burner delivers pressurized combustible gas at high speed through the gas nozzle. Based on Bernoulli's principle, air is drawn in through the air inlet under negative pressure, providing the oxygen required for combustion without the need for additional oxygen supply or compressed air. The extended outer gun barrel ensures complete combustion of the combustible gas, and the flame dispersed by the flame disperser has a larger area, thus uniformly preheating the liquid metal flow channel and improving preheating efficiency. This prevents the flame from concentrating in a certain area and causing deformation or damage to the molten metal flow channel. Furthermore, it can heat the liquid metal and melt the metal solidified in the flow channel when a heating device malfunctions, ensuring production continuity and product quality. This contributes to improving the production efficiency of metal castings.

[0011] The outer gun barrel, outer gun extension tube, first connecting sleeve, second connecting sleeve, transition liner tube, and limiting protrusion work together to ensure stable fixation between the outer gun extension tube and the outer gun barrel. The transition liner tube between the outer gun extension tube and the outer gun barrel prevents leakage or eddy currents in the combustion gas at the connection point, ensuring structural stability and smooth flow of combustion gas. Furthermore, the outer gun extension tube is a consumable component, allowing for easy replacement or disassembly as needed, thus improving the flexibility and maintenance efficiency of the combustible gas burner. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0014] Figure 3 for Figure 1 A magnified view of a portion of region B in the middle;

[0015] Figure 4 for Figure 1 A magnified view of a portion of region C.

[0016] In the diagram: 1. Support; 2. Mixing chamber; 3. Gas regulating valve; 4. Combustible gas connector; 5. Gas nozzle; 6. Air inlet; 7. Inner barrel; 8. Outer barrel; 9. Outer barrel extension tube; 10. Flame disperser; 11. First connecting sleeve; 12. Second connecting sleeve; 13. Transition inner liner tube; 14. Limiting protrusion; 15. First fixing screw; 16. Arc-shaped baffle; 17. Adjustment groove; 18. Butterfly nut; 19. Disperser cover; 20. Second fixing bolt; 21. Combined sealing gasket. Detailed Implementation

[0017] 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 protection scope of the present utility model.

[0018] In existing technologies, baking is used to preheat the molten metal flow tank. However, during the baking process, the flame temperature is too high, which can cause the flow tank to deform or be damaged, increasing production costs and maintenance difficulties. At the same time, molten metal easily loses a lot of heat during the flow process, which needs to be replenished by increasing the heat of the holding furnace, degassing furnace, filter box heater, etc. during normal production. However, if these devices malfunction and are not repaired, it will directly affect production, or even cause production failure, affecting the continuity of production and product quality.

[0019] In view of this, the present invention provides a combustible gas burner. Through the cooperation of a support, mixing chamber, gas regulating valve, combustible gas connector, gas nozzle, air inlet, inner gun barrel, outer gun barrel, outer gun extension tube, and flame disperser, pressurized combustible gas is ejected at high speed from the gas nozzle. Based on Bernoulli's principle, air is drawn in through the air inlet under negative pressure and mixed with the high-speed injected combustible gas in the inner gun barrel, providing the oxygen required for combustion without the need for additional oxygen supply or compressed air. By extending the outer gun barrel, the complete combustion of the combustible gas is ensured, and the flame dispersed by the flame disperser has a larger area, uniformly preheating the liquid metal flow channel and improving preheating efficiency. This avoids the flame concentrating in a certain area, effectively preventing deformation or damage to the liquid metal flow channel due to localized high temperature. At the same time, it can also heat the liquid metal and melt the metal solidified in the flow channel when a certain heating equipment fails, ensuring production continuity and product quality.

[0020] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0021] Depend on Figure 1-4 It is known that a combustible gas burner includes a support 1, a mixing chamber 2 is provided inside the support 1, a gas regulating valve 3 is fixedly connected to one side of the support 1, a combustible gas connector 4 is provided at the input end of the gas regulating valve 3, a gas nozzle 5 is fixedly connected to the support 1 inside the mixing chamber 2, the gas nozzle 5 is connected to the output end of the gas regulating valve 3, an air inlet 6 is provided at the bottom of the support 1, the air inlet 6 is connected to the mixing chamber 2, an inner gun barrel 7 is fixedly connected to the inner wall of the support 1 away from the mixing chamber 2, an outer gun barrel 8 is connected to the outer wall of the inner gun barrel 7, the outer gun barrel 8 is fixedly connected to the support 1 by screws, the screws connecting the outer gun barrel 8 and the support 1 should be anti-corrosion treated after connection and the gaps should be filled, the anti-corrosion method and gap filling should have a certain high temperature resistance property, an outer gun extension tube 9 is provided at the end of the outer gun barrel 8 away from the support 1, and a flame disperser 10 is fixedly connected to the end of the outer gun extension tube 9 away from the outer gun barrel 8.

[0022] In the specific implementation process, it is worth noting that, through the cooperation between the support 1, mixing chamber 2, gas regulating valve 3, combustible gas connector 4, and gas nozzle 5, the combustible gas supply pipe is connected to the gas regulating valve 3 via the combustible gas connector 4. By rotating the regulating knob of the gas regulating valve 3, the delivery of combustible gas can be controlled or the delivery volume can be adjusted. The combustible gas is delivered to the gas nozzle 5 by the gas regulating valve 3 and ejected inside the mixing chamber 2. Through the cooperation between the support 1, mixing chamber 2, gas nozzle 5, air inlet 6, and inner barrel 7, the end of the gas nozzle 5 extends into the interior of the inner barrel 7, spraying the pressurized combustible gas at high speed. The inner diameter of the inner barrel 7 is uniformly varied in a trumpet shape. Based on Bernoulli's principle, when the combustible gas flows at high speed in the inner barrel 7, a negative pressure is formed inside the mixing chamber 2. This negative pressure draws air in through the air inlet 6 and mixes it with the high-speed injected combustible gas in the inner barrel 7, providing the oxygen required for combustion and ensuring complete combustion, thereby improving combustion efficiency. Through the cooperation of the support 1, inner barrel 7, outer barrel 8, outer extension tube 9, and flame disperser 10, the flame generated by the combustion of the combustible gas is transmitted from the inner barrel 7, outer barrel 8, and outer extension tube 9 to the flame disperser 10. The flame disperser 10... Thirty-two dispersion holes are evenly spaced outwards on the circumferential plane, allowing the flame to be evenly dispersed and expanding the flame area. This is used for uniform preheating of the flow channel, as well as heating liquid metal and melting metal solidified in the flow channel. It prevents the flame from concentrating in one area, effectively preventing deformation or damage to the molten metal flow channel due to localized high temperatures. Through the cooperation of the support 1, mixing chamber 2, gas regulating valve 3, combustible gas connector 4, gas nozzle 5, air inlet 6, inner gun barrel 7, outer gun barrel 8, outer gun extension tube 9, and flame disperser 10, pressurized combustible gas is ejected at high speed through the gas nozzle 5. Based on Bernoulli's principle, air is forced through the air inlet under negative pressure. 6. The combustible gas is drawn in and mixed with the high-speed injected combustible gas in the inner gun tube 7, providing the oxygen required for combustion without the need for additional oxygen supply or compressed air supply. By extending the outer gun tube 8, the combustible gas is ensured to burn completely, so that the flame dispersed by the flame disperser 10 can have a larger area, uniformly preheating the liquid metal flow channel and improving preheating efficiency. This avoids the flame from concentrating in a certain area, thereby effectively preventing the metal flow channel from deforming or being damaged due to local high temperature. At the same time, it can also heat the liquid metal and melt the metal solidified in the flow channel when a certain heating equipment fails, ensuring the continuity of production and product quality.

[0023] Furthermore, a first connecting sleeve 11 is fixedly connected to the end of the outer wall of the outer gun barrel 8 away from the bracket 1, and a second connecting sleeve 12 is fixedly connected to the end of the outer wall of the outer gun extension tube 9 away from the flame diffuser 10. The second connecting sleeve 12 is threadedly connected to the first connecting sleeve 11. The inner walls of the outer gun barrel 8 and the outer gun extension tube 9 are both fitted with transition inner liner tubes 13. The outer wall of the transition inner liner tube 13 is provided with a limiting protrusion 14, which is fitted with the outer gun barrel 8 and the outer gun extension tube 9 respectively.

[0024] In the specific implementation process, it is worth noting that, through the cooperation between the outer gun barrel 8, the outer gun extension tube 9, the first connecting sleeve 11, the second connecting sleeve 12, the transition inner liner tube 13, and the limiting protrusion 14, the first connecting sleeve 11 and the second connecting sleeve 12 are respectively fixed to the sides of the outer gun barrel 8 and the outer gun extension tube 9 that are close to each other. The second connecting sleeve 12 is fixed to the first connecting sleeve 11 by means of threaded connection, thereby realizing the fixation between the outer gun extension tube 9 and the outer gun barrel 8. By setting the transition inner liner tube 13 between the outer gun extension tube 9 and the outer gun barrel 8, and limiting the installation by the limiting protrusion 14, leakage or eddy current of combustion gas at the connection between the outer gun barrel 8 and the outer gun extension tube 9 is avoided, ensuring the stability of the structure and the smooth flow of combustion gas. At the same time, the outer gun extension tube 9 is a consumable component, which will be oxidized at high temperature during use. After oxidation, it will become thinner or damaged, making it easier for staff to replace the outer gun extension tube 9 or disassemble it according to the use needs, thereby improving the flexibility of use and maintenance efficiency of the combustible gas burner.

[0025] Furthermore, a first fixing screw 15 is fixedly connected to the bottom of the inner barrel 7 near the support 1. The first fixing screw 15 passes through the air inlet 6. An arc-shaped baffle 16 is fitted to the bottom of the outer wall of the support 1. An adjustment groove 17 is opened at the bottom of the arc-shaped baffle 16. The adjustment groove 17 is fitted to the first fixing screw 15. A wing nut 18 is threaded to the end of the first fixing screw 15. The wing nut 18 is fitted to the arc-shaped baffle 16.

[0026] In the specific implementation process, it is worth noting that, through the cooperation between the bracket 1, air inlet 6, inner barrel 7, first fixing screw 15, arc-shaped baffle 16, adjusting groove 17, and wing nut 18, the arc-shaped baffle 16 is installed at the bottom of the bracket 1 via the first fixing screw 15 and wing nut 18, partially covering the air inlet 6. Furthermore, the coverage area of ​​the air inlet 6 by the arc-shaped baffle 16 can be adjusted, allowing operators to flexibly adjust the air intake of the air inlet 6 according to the delivery volume of the combustion gas, thus improving the operational flexibility of the combustible gas burner.

[0027] Furthermore, the outer wall of the flame disperser 10 is fitted with a disperser cover 19, and the disperser cover 19 is fixedly connected to the outer gun extension tube 9 by a second fixing bolt 20.

[0028] In the specific implementation process, it is worth noting that, through the cooperation between the outer gun extension tube 9, the flame disperser 10, the disperser cover 19, and the second fixing bolt 20, the disperser cover 19 is fixed to the end of the outer gun extension tube 9 by the second fixing bolt 20, which protects and limits the flame disperser 10 from being damaged or falling off due to bumps.

[0029] Furthermore, a combined sealing gasket 21 is provided on the side of the bracket 1 and the gas regulating valve 3 that are close to each other. The combined sealing gasket 21 is used to seal the connection between the bracket 1 and the gas regulating valve 3.

[0030] In the specific implementation process, it is worth noting that the combined sealing gasket 21 is used to seal the connection between the bracket 1 and the gas regulating valve 3 to prevent the combustion gas from leaking out, while improving the connection stability between the bracket 1 and the gas regulating valve 3.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combustible gas burner, comprising a support (1), characterized in that: The bracket (1) has a mixing chamber (2) inside. A gas regulating valve (3) is fixedly connected to one side of the bracket (1). A combustible gas connector (4) is provided at the input end of the gas regulating valve (3). A gas nozzle (5) is fixedly connected inside the mixing chamber (2) of the bracket (1). The gas nozzle (5) is connected to the output end of the gas regulating valve (3). An air inlet (6) is provided at the bottom of the bracket (1). The air inlet (6) is connected to the mixing chamber (2). An inner gun barrel (7) is fixedly connected to the inner wall of the bracket (1) away from the mixing chamber (2). An outer gun barrel (8) is connected to the outer wall of the inner gun barrel (7). The outer gun barrel (8) is fixedly connected to the bracket (1) by screws. An outer gun extension tube (9) is provided at the end of the outer gun barrel (8) away from the bracket (1). A flame disperser (10) is fixedly connected to the end of the outer gun extension tube (9) away from the outer gun barrel (8).

2. A combustible gas burner according to claim 1, characterized in that: The outer wall of the outer gun barrel (8) is fixedly connected to a first connecting sleeve (11) at the end away from the bracket (1), and the outer wall of the outer gun extension tube (9) is fixedly connected to a second connecting sleeve (12) at the end away from the flame disperser (10). The second connecting sleeve (12) is threadedly connected to the first connecting sleeve (11). The inner walls of the outer gun barrel (8) and the outer gun extension tube (9) are both fitted with transition inner liner tubes (13). The outer wall of the transition inner liner tube (13) is provided with a limiting protrusion (14), and the limiting protrusion (14) is fitted with the outer gun barrel (8) and the outer gun extension tube (9) respectively.

3. A combustible gas burner according to claim 1, characterized in that: The inner barrel (7) is fixedly connected to a first fixing screw (15) at the bottom of one end near the bracket (1). The first fixing screw (15) passes through the air inlet (6). An arc-shaped baffle (16) is connected to the bottom of the outer wall of the bracket (1). An adjustment groove (17) is provided at the bottom of the arc-shaped baffle (16). The adjustment groove (17) is connected to the first fixing screw (15). A wing nut (18) is threaded to the end of the first fixing screw (15). The wing nut (18) is connected to the arc-shaped baffle (16).

4. A combustible gas burner according to claim 1, characterized in that: The outer wall of the flame disperser (10) is fitted with a disperser cover (19), which is fixedly connected to the outer gun extension tube (9) by a second fixing bolt (20).

5. A combustible gas burner according to claim 1, characterized in that: A combined sealing gasket (21) is provided on the side of the bracket (1) and the gas regulating valve (3) that are close to each other.

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