Heat preservation furnace regenerative burner

Abstract

The utility model discloses a kind of heat storage burners of heat preservation furnace, it is related to heat preservation furnace technical field, including heat preservation furnace body, heat preservation furnace extension, cavity pipe, air inlet pipe, temperature detector, first honeycomb regenerator, second honeycomb regenerator, first gas pipe, second gas pipe, first pipeline, second pipeline, waste gas pipe, first pipeline, first natural gas inlet pipeline, first diverter switches air valve switch, auxiliary plate, burner, second pipeline, second natural gas inlet pipeline and second diverter switches air valve switch.The utility model structure is simpler, smaller, manufacturing cost and operating cost are greatly saved;Intelligentization and automation control and operation are adopted, manual input and the error of furnace temperature are greatly reduced;Through air combustion-supporting and regenerator heat storage filtration, the full combustion of natural gas is greatly ensured, the discharge of waste gas is reduced, to achieve energy saving and emission reduction.

Description

Technical Field

[0001] This utility model relates to the field of heat preservation furnace technology, specifically to a heat preservation furnace heat storage burner. Background Technology

[0002] A holding furnace is a mechanical device used for heat preservation during metal smelting. It mainly consists of a furnace body, a molten pool, a sealing cover, and a riser pipe, and is a core component of a low-pressure casting machine. Based on the heating method, it is divided into resistance heating furnaces and electric reverberatory furnaces, with resistance heating furnaces being widely used due to their convenient temperature control. The crucible is mostly made of alloy cast iron or medium-silicon ductile iron. The riser pipe needs to undergo high-pressure testing and surface sulfurizing treatment or high-temperature resistant material spraying to extend its service life.

[0003] Commercially available industrial insulation furnaces typically have large insulation modules with only average insulation performance. Furthermore, the natural gas inside the furnace is not fully combusted, leading to a waste of natural gas resources. In addition, a large amount of waste gas is emitted during the combustion process, which does not contribute to energy conservation and emission reduction. Utility Model Content

[0004] The purpose of this invention is to provide a heat storage burner for a heat preservation furnace to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A heat storage burner for a heat-insulating furnace includes a heat-insulating furnace body, a heat-insulating furnace extension fixedly disposed at the lower end of the heat-insulating furnace body, a cavity tube fixedly disposed through the upper end of the heat-insulating furnace body, an air inlet pipe fixedly connected to the lower end of the cavity tube, a temperature detector disposed on the outer side of the heat-insulating furnace body, a first honeycomb-shaped heat storage body and a second honeycomb-shaped heat storage body disposed inside the heat-insulating furnace body, a first gas pipe and a second gas pipe disposed at the upper end of the heat-insulating furnace body, a first pipe and a second pipe fixedly connected to the lower end of the heat-insulating furnace extension, and two sides of the heat-insulating furnace extension fixedly connected to... The first gas pipe has a first pipeline fixedly connected to one side of its upper end, and a first natural gas inlet pipe fixedly connected to the other side of its upper end. A first diverter switch for changing the air valve is provided on the outside of the first natural gas inlet pipe. An auxiliary plate is fixedly connected to the outside of the upper end of the cavity pipe, and a burner is fixedly connected to the lower end of the auxiliary plate. The second gas pipe has a second pipeline fixedly connected to one side of its upper end, and a second natural gas inlet pipe fixedly connected to the other side of its upper end. A second diverter switch for changing the air valve is provided on the outside of the second natural gas inlet pipe.

[0007] A further improvement of this utility model is that the air inlet pipe is located at the lower end of the extension of the heat preservation furnace.

[0008] By adopting the above technical solution, the air inlet pipe facilitates the flow of air into the cavity pipe, thereby ensuring the complete combustion of natural gas.

[0009] A further improvement of this utility model is that the first honeycomb-shaped heat storage body is located on one side of the cavity tube, and the second honeycomb-shaped heat storage body is located on the other side of the cavity tube.

[0010] The above technical solution uses a first honeycomb heat storage body and a second honeycomb heat storage body to store the heat after each combustion.

[0011] A further improvement of this utility model is that the first pipe is connected to a group of exhaust pipes, and the second pipe is connected to another group of exhaust pipes.

[0012] Using the above technical solution, the high-temperature exhaust gas generated in the first gas pipe is discharged through the exhaust pipe.

[0013] A further improvement of this utility model is that the upper end of the first pipe is connected to the first honeycomb-shaped heat storage body, and the upper end of the second pipe is connected to the second honeycomb-shaped heat storage body.

[0014] Using the above technical solution, the high-temperature gas in the flame-heated extension of the heat preservation furnace is returned to the second honeycomb-shaped heat storage body in the heat preservation furnace body through the first pipe, and the high-temperature gas in the flame-heated extension of the heat preservation furnace is returned to the first honeycomb-shaped heat storage body in the heat preservation furnace body through the second pipe, where no natural gas enters.

[0015] A further improvement of this utility model is that the first pipeline is connected to the hollow tube, and the second pipeline is connected to the hollow tube.

[0016] Using the above technical solution, the cavity tube and the first air tube are connected through the first pipeline, and the cavity tube and the second air tube are connected through the second pipeline.

[0017] A further improvement of this utility model is that the burner is connected to the first gas pipe and the second gas pipe via the auxiliary plate and the interior of the cavity tube.

[0018] Using the above technical solution, natural gas is burned through a burner, and flames are sprayed downwards.

[0019] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0020] This utility model provides a heat storage burner for a heat preservation furnace, which has a simpler structure and smaller size, significantly saving manufacturing and operating costs; it adopts intelligent and automated control and operation, further reducing manual input and furnace temperature errors; through air-assisted combustion and heat storage filtration of the heat storage body, it largely ensures the complete combustion of natural gas and reduces the emission of waste gas, thereby achieving energy conservation and emission reduction. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle.

[0023] In the diagram: 1. Main body of the heat preservation furnace; 2. Extension of the heat preservation furnace; 3. Hollow tube; 4. Air inlet pipe; 5. Temperature detector; 6. First gas pipe; 7. Second gas pipe; 8. Exhaust gas pipe; 9. First honeycomb heat storage body; 10. Second honeycomb heat storage body; 11. First pipeline; 12. First natural gas inlet pipeline; 13. First diverter switch for air valve; 14. Auxiliary plate; 15. Burner; 16. Second pipeline; 17. Second natural gas inlet pipeline; 18. Second diverter switch for air valve; 19. First pipeline; 20. Second pipeline. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to embodiments:

[0025] Example 1

[0026] like Figure 1-2As shown, this utility model provides a heat storage burner for a heat-insulating furnace, including a heat-insulating furnace body 1. A heat-insulating furnace extension 2 is fixedly installed at the lower end of the heat-insulating furnace body 1. A cavity tube 3 is fixedly installed through the upper end of the heat-insulating furnace body 1. An air inlet pipe 4 is fixedly connected to the lower end of the cavity tube 3. A temperature detector 5 is installed on the outside of the heat-insulating furnace body 1. A first honeycomb heat storage body 9 and a second honeycomb heat storage body 10 are installed inside the heat-insulating furnace body 1. A first gas pipe 6 and a second gas pipe 7 are installed at the upper end of the heat-insulating furnace body 1. A first pipe 19 and a second pipe 20 are fixedly connected to the lower end of the heat-insulating furnace extension 2. Both sides of the heat-insulating furnace extension 2 are fixed. The first gas pipe 6 is connected to an exhaust pipe 8. The upper end of the first gas pipe 6 is fixedly connected to a first pipeline 11. The upper end of the first gas pipe 6 is fixedly connected to a first natural gas inlet pipeline 12. A first diverter switch 13 is provided on the outside of the first natural gas inlet pipeline 12. An auxiliary plate 14 is fixedly connected to the upper outside of the cavity pipe 3. A burner 15 is fixedly connected to the lower end of the auxiliary plate 14. The upper end of the second gas pipe 7 is fixedly connected to a second pipeline 16. The upper end of the second gas pipe 7 is fixedly connected to a second natural gas inlet pipeline 17. A second diverter switch 18 is provided on the outside of the second natural gas inlet pipeline 17.

[0027] Air inlet pipe 4 is located at the lower end of the extension section 2 of the heat preservation furnace. The first honeycomb heat storage body 9 is located on one side of the cavity tube 3, and the second honeycomb heat storage body 10 is located on the other side of the cavity tube 3. The first pipe 19 is connected to one set of exhaust pipes 8, and the second pipe 20 is connected to another set of exhaust pipes 8. The upper end of the first pipe 19 is connected to the first honeycomb heat storage body 9, and the upper end of the second pipe 20 is connected to the second honeycomb heat storage body 10. The first pipe 11 is connected to the cavity tube 3, and the second pipe 16 is connected to the cavity tube 3. The burner 15 is connected to the first gas pipe 6 and the second gas pipe 7 through the auxiliary plate 14 and the interior of the cavity tube 3.

[0028] In this embodiment, the air inlet pipe 4 facilitates the flow of air into the cavity pipe 3 to ensure complete combustion of natural gas. The first honeycomb heat storage body 9 and the second honeycomb heat storage body 10 store the heat after each combustion. The high-temperature exhaust gas generated in the first gas pipe 6 is discharged through the exhaust pipe 8. The high-temperature gas in the flame-heated extension of the heat preservation furnace 2 is returned to the second honeycomb heat storage body 10 in the heat preservation furnace body 1 where no natural gas enters through the first pipe 19. The high-temperature gas in the flame-heated extension of the heat preservation furnace 2 is returned to the first honeycomb heat storage body 9 in the heat preservation furnace body 1 where no natural gas enters through the second pipe 20. The cavity pipe 3 and the first gas pipe 6 are connected through the first pipe 11. The cavity pipe 3 and the second gas pipe 7 are connected through the second pipe 16. The natural gas is burned through the burner 15, and the flame is sprayed downward.

[0029] The working principle of the heat storage burner in this heat preservation furnace will be explained in detail below.

[0030] like Figure 1-2 As shown, natural gas first enters the cavity pipe 3 through either the first gas pipe 6 or the second gas pipe 7 next to the burner 15, and the air inlet pipe 4 below the cavity pipe 3 facilitates air flow, allowing both natural gas and air to flow to the burner 15. When the burner 15 is burning, it sprays flames downwards. The high-temperature gas in the heat preservation furnace extension 2, heated by the flame, flows back to the first honeycomb-shaped heat storage body 9 or the second honeycomb-shaped heat storage body 10 embedded on the side of the heat preservation furnace body 1 where no natural gas enters. The high-temperature exhaust gas then flows out through the exhaust pipe 8 of the first gas pipe 6 on that side or through the second gas pipe 7. Exhaust gas flows out through pipe 8; when the machine is started, the first diverter switching air valve switch 13 and the second diverter switching air valve switch 18 automatically open and close according to a preset time. When the first diverter switching air valve switch 13 is open, the first gas pipe 6 serves as the natural gas inlet, the first honeycomb heat storage body 9 serves as the high-temperature gas heat storage body, and the first pipe 19 serves as the exhaust gas outlet. When the second diverter switching air valve switch 18 is open, the second gas pipe 7 serves as the natural gas inlet, the second honeycomb heat storage body 10 serves as the high-temperature gas heat storage body, and the second pipe 20 serves as the exhaust gas outlet.

[0031] The first honeycomb heat storage body 9 and the second honeycomb heat storage body 10 store the heat after each combustion. The air inlet pipe 4 facilitates combustion and ensures the full combustion of natural gas, thereby saving natural gas. The presence of the burner 15 means that as long as natural gas and flame-retardant air reach the burner 15, the burner 15 will spray a high-temperature flame to heat the molten aluminum in the lower heat preservation furnace body 1. The temperature detector 5 controls the temperature and the gas inlet combustion are controlled by the control box installed outside the heat preservation furnace body 1. The temperature inside the heat preservation furnace body 1 maintains an error of no more than ±5℃ of the set temperature.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A heat storage burner for a heat-insulating furnace, comprising a heat-insulating furnace body (1), characterized in that: A furnace extension (2) is fixedly provided at the lower end of the furnace body (1). A cavity tube (3) is fixedly provided through the upper end of the furnace body (1). An air inlet pipe (4) is fixedly connected to the lower end of the cavity tube (3). A temperature detector (5) is provided on the outside of the furnace body (1). A first honeycomb heat storage body (9) and a second honeycomb heat storage body (10) are provided inside the furnace body (1). A first gas pipe (6) and a second gas pipe (7) are provided at the upper end of the furnace body (1). A first pipe (19) and a second pipe (20) are fixedly connected to the lower end of the furnace extension (2). Exhaust pipes (8) are fixedly connected to both sides of the furnace extension (2). The upper end of the gas pipe (6) is fixedly connected to a first pipeline (11), and the other end of the upper end of the first gas pipe (6) is fixedly connected to a first natural gas inlet pipeline (12). A first diverter switch (13) is provided on the outside of the first natural gas inlet pipeline (12). An auxiliary plate (14) is fixedly connected to the outside of the upper end of the cavity pipe (3). A burner (15) is fixedly connected to the lower end of the auxiliary plate (14). The upper end of the second gas pipe (7) is fixedly connected to a second pipeline (16), and the other end of the upper end of the second gas pipe (7) is fixedly connected to a second natural gas inlet pipeline (17). A second diverter switch (18) is provided on the outside of the second natural gas inlet pipeline (17).

2. The heat storage burner for a heat-insulating furnace according to claim 1, characterized in that: The air inlet pipe (4) is located at the lower end of the heat preservation furnace extension (2).

3. The heat storage burner for a heat-insulating furnace according to claim 1, characterized in that: The first honeycomb heat storage body (9) is located on one side of the cavity tube (3), and the second honeycomb heat storage body (10) is located on the other side of the cavity tube (3).

4. The heat storage burner for a heat-insulating furnace according to claim 1, characterized in that: The first pipe (19) is connected to a group of exhaust pipes (8), and the second pipe (20) is connected to another group of exhaust pipes (8).

5. The heat storage burner for a heat-insulating furnace according to claim 1, characterized in that: The upper end of the first pipe (19) is connected to the first honeycomb heat storage body (9), and the upper end of the second pipe (20) is connected to the second honeycomb heat storage body (10).

6. The heat storage burner for a heat-insulating furnace according to claim 1, characterized in that: The first pipeline (11) is connected to the cavity pipe (3), and the second pipeline (16) is connected to the cavity pipe (3).

7. The heat storage burner for a heat-insulating furnace according to claim 1, characterized in that: The burner (15) is connected to the first gas pipe (6) and the second gas pipe (7) via the auxiliary plate (14) and the interior of the cavity tube (3).

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