Heat preservation device of steel smelting furnace

Abstract

The utility model discloses a thermal insulation device of a steel smelting furnace, which relates to the technical field of auxiliary equipment of smelting furnaces and comprises an outer cylinder, an inner cylinder fixedly mounted in the outer cylinder, a pipeline box fixedly mounted on the outer side of the outer cylinder, a coil fixedly mounted on the outer side of the inner cylinder, a connecting seat movably mounted on the outer side of the pipeline box, and a gas guide pipe fixedly mounted in the connecting seat. One end of the gas guide pipe is fixedly connected with one end of a waste gas exhauster of the smelting furnace through a pipeline, the inner barrel is of a honeycomb-shaped heat storage structure, the space between the outer barrel and the inner barrel is filled with a heat preservation material, and two first fixing bases are fixedly installed on the outer side of the outer barrel and arranged above and below the outer side of the outer barrel correspondingly. By arranging the outer barrel and the inner barrel, a double-layer heat preservation structure can be achieved, in addition, high-temperature waste gas of the smelting furnace can heat the inner barrel through the coil pipe, the connecting base and the gas guide pipe, meanwhile, heat radiation of the smelting furnace is matched to enable the smelting furnace to store heat in the inner barrel during working, and the heat preservation performance and duration of the whole structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for smelting furnaces, in particular to a heat preservation device for a steel smelting furnace. Background Art

[0002] A smelting furnace is an industrial equipment specially used for metal smelting. It is one of the key equipment in the modern metal manufacturing industry. Its main function is to extract metal elements from ore, concentrate or other metal-containing raw materials by smelting them at high temperatures. There are many types of smelting furnaces. According to the smelting process and raw materials, they can be divided into various types such as converters, blast furnaces, and electric furnaces. The operation of smelting furnaces is usually accompanied by complex chemical reactions, including redox reactions, to ensure that metal elements can be separated from the raw materials. The design and construction of these furnaces must be able to withstand extreme high temperature environments and maintain long-term stable operation. At the same time, in order to improve smelting efficiency and metal quality, smelting furnaces are also equipped with environmental protection equipment to treat waste gas and waste slag generated during smelting.

[0003] Existing smelting furnaces generally have one or more layers of insulation materials wrapped around the outside of the furnace body, such as insulation bricks, insulation cotton, etc. These insulation materials can effectively prevent the radiation and convection transfer of heat, and can improve the insulation performance of the furnace body. For example, the Chinese utility model patent disclosed with publication number CN219995870U: A vacuum pyrometallurgical furnace, the application sets an outer insulation shell and an outer insulation shell cover on the outside of the smelting furnace body to achieve insulation of the smelting furnace body. However, since the smelting furnace will generate extremely high temperatures during operation, long-term high temperature exposure will also cause the performance of the material to gradually decline. At the same time, the chemical reactions and physical changes inside the smelting furnace may produce corrosive substances or gases, which may corrode the insulation shell material, causing damage to the insulation shell and reduced performance, thereby affecting the insulation effect. At the same time, traditional insulation materials do not have the ability to provide additional heating function, and thus cannot provide a more lasting insulation function for the smelting furnace. Utility Model Content

[0004] The purpose of the utility model is to provide a heat preservation device for a steel smelting furnace, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A heat preservation device for a steel smelting furnace comprises an outer tube, an inner tube fixedly mounted inside the outer tube, a pipeline box fixedly mounted outside the outer tube, a coil fixedly mounted outside the inner tube, a connecting seat movably mounted outside the pipeline box, an air guide pipe fixedly mounted inside the connecting seat, and one end of the air guide pipe fixedly connected to one end of an exhaust gas exhaust fan of the smelting furnace through a pipeline.

[0007] As a further optimization solution of the present invention, the inner cylinder is a honeycomb heat storage structure, and the space between the outer cylinder and the inner cylinder is filled with heat insulation material.

[0008] As a further optimization solution of the present invention, two first fixing seats are fixedly installed on the outside of the outer tube, and the two first fixing seats are respectively arranged at the upper and lower positions of the outside of the outer tube, and the inner cavity of the first fixing seat is connected to the inner cavity of the outer tube. With the help of the setting of the first fixing seat, the two ends of the coil can be introduced into the pipeline box respectively.

[0009] As a further optimization solution of the present invention, a spiral pipeline groove is provided on the outer side of the inner cylinder.

[0010] As a further optimization scheme of the present invention, the coil has a spiral structure, and a connecting piece is fixedly installed on the inside of the coil. The coil and the connecting piece are both made of copper. One end of the coil is the air outlet end, and the other end of the coil is the air inlet end. The coil and the connecting piece are fixedly installed on the outside of the inner tube. Through the arrangement of the coil and the connecting piece, the heat in the high-temperature exhaust gas generated during the operation of the smelting furnace can be more effectively transferred to the inner tube for heat storage.

[0011] As a further optimization solution of the present invention, a heat-insulating layer is provided in the pipeline box, a second fixing seat is fixedly installed on one side of the pipeline box, and a screw groove is provided on the inner side of the second fixing seat.

[0012] As a further optimization scheme of the present invention, a spiral tube is fixedly installed at one end of the connecting seat, one end of the air guide pipe passes through the connecting seat and extends to the outside of the connecting seat and is fixedly installed with a limit plate, and a cannula is fixedly installed at the other end of the air guide pipe. The connecting seat is threadedly connected to one end of the second fixed seat through the spiral tube, and the cannula is inserted into the air inlet end of the coil, and the air outlet end is connected to the input end of the external exhaust treatment equipment through a pipeline. Through the setting of the connecting seat and the air guide pipe, a protective connection between the external pipeline and the air inlet end of the coil can be achieved.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model discloses a heat preservation device for a steel smelting furnace, which can realize a double-layer heat preservation structure by setting an outer tube and an inner tube. In addition, the high-temperature exhaust gas of the smelting furnace can heat the inner tube with the help of the coil, the connecting seat and the air guide pipe. At the same time, the heat radiation of the smelting furnace can store heat in the inner tube when the smelting furnace is working, thereby improving the heat preservation performance and duration of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a heat preservation device for a steel smelting furnace according to the present invention;

[0016] Figure 2 This is a schematic diagram of the main structure of a heat preservation device for a steel smelting furnace according to the present invention;

[0017] Figure 3 This is a schematic diagram of the disassembled outer tube, inner tube and coil structure of a heat preservation device for a steel smelting furnace according to the present invention;

[0018] Figure 4 This is a schematic diagram of the disassembled connecting seat structure of a heat preservation device of a steel smelting furnace according to the present invention.

[0019] In the figure: 1. Outer tube; 2. Inner tube; 3. Pipe box; 4. Coil; 5. Connecting seat; 6. Air guide tube; 7. Pipe groove; 8. Connecting piece; 9. Air outlet; 10. Air inlet; 11. First fixing seat; 12. Second fixing seat; 13. Screw groove; 14. Screw tube; 15. Limiting plate; 16. Intubation tube. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figures 1-4 As shown, the utility model provides an insulation device for a steel smelting furnace, comprising an outer tube 1, an inner tube 2 fixedly installed inside the outer tube 1, a pipeline box 3 fixedly installed outside the outer tube 1, a coil 4 fixedly installed outside the inner tube 2, a connecting seat 5 movably installed outside the pipeline box 3, an air guide pipe 6 fixedly installed inside the connecting seat 5, and one end of the air guide pipe 6 is fixedly connected to one end of the exhaust gas exhaust fan of the smelting furnace through a pipeline.

[0022] like Figure 2-Figure 3 As shown, the inner tube 2 is a honeycomb heat storage structure, and a heat insulation material is filled between the outer tube 1 and the inner tube 2. Two first fixing seats 11 are fixedly installed on the outside of the outer tube 1, and the two first fixing seats 11 are respectively arranged at the upper and lower positions of the outer side of the outer tube 1, and the inner cavity of the first fixing seat 11 is connected with the inner cavity of the outer tube 1. With the arrangement of the first fixing seat 11, the two ends of the coil 4 can be respectively introduced into the pipeline box 3. A spiral pipeline groove 7 is provided on the outside of the inner tube 2. The coil 4 has a spiral structure, and a connecting piece 8 is fixedly installed on the inside of the coil 4. The coil 4 and the connecting piece 8 are both made of copper. One end of the coil 4 is the air outlet end 9, and the other end of the coil 4 is the air inlet end 10. The coil 4 and the connecting piece 8 are fixedly installed on the outside of the inner tube 2. Through the arrangement of the coil 4 and the connecting piece 8, the heat in the high-temperature exhaust gas generated when the smelting furnace is running can be more effectively transferred to the inner tube 2 for heat storage;

[0023] like Figure 2 、 Figure 4As shown, the pipeline box 3 has an insulation layer, and a second fixing seat 12 is fixedly installed on one side of the pipeline box 3. A screw groove 13 is opened on the inner side of the second fixing seat 12, and a screw pipe 14 is fixedly installed on one end of the connecting seat 5. One end of the air guide pipe 6 passes through the connecting seat 5 and extends to the outside of the connecting seat 5 and is fixedly installed with a limit disk 15. The other end of the air guide pipe 6 is fixedly installed with a cannula 16. The connecting seat 5 is threadedly connected to one end of the second fixing seat 12 through the screw pipe 14, and the cannula 16 is inserted into the air inlet end 10 of the coil 4, and the air outlet end 9 is connected to the input end of the external exhaust gas treatment equipment through a pipeline. Through the arrangement of the connecting seat 5 and the air guide pipe 6, a protective connection between the external pipeline and the air inlet end 10 of the coil 4 can be achieved.

[0024] It should be noted that the utility model is an insulation device for a steel smelting furnace. When the smelting furnace is placed in the inner tube 2 to smelt the raw materials, the high-temperature exhaust gas generated is sucked into the air duct 6 through the fan and the pipeline, and the high-temperature exhaust gas enters the coil 4 through the air duct 6. As a result, the high-temperature exhaust gas heats the coil 4, and the coil 4 conducts heat through the inner connecting piece 8 and fully cooperates with the heat radiation during the operation of the smelting furnace to heat the inner tube 2, so that the inner tube 2 continuously stores heat, which can keep the smelting furnace warm on the one hand, and on the other hand, after the smelting furnace has undergone a smelting cycle, it can release heat through the inner tube 2, which can effectively heat and insulate the smelting furnace and reduce the heat loss rate of the smelting furnace body. When the exhaust gas passes through the coil 4, it is finally discharged through the air outlet 9 of the coil 4 and is discharged into the external exhaust gas treatment equipment in cooperation with the pipeline.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A heat preservation device for a steel smelting furnace, characterized in that: The invention comprises an outer cylinder (1), an inner cylinder (2) is fixedly installed in the outer cylinder (1), a pipeline box (3) is fixedly installed on the outer side of the outer cylinder (1), a coil (4) is fixedly installed on the outer side of the inner cylinder (2), a connecting seat (5) is movably installed on the outer side of the pipeline box (3), an air guide pipe (6) is fixedly installed in the connecting seat (5), and one end of the air guide pipe (6) is fixedly connected to one end of the exhaust gas exhaust fan of the smelting furnace through a pipeline.

2. The heat preservation device for a steel smelting furnace according to claim 1, characterized in that: The inner cylinder (2) is a honeycomb heat storage structure, and the space between the outer cylinder (1) and the inner cylinder (2) is filled with heat insulation material.

3. The heat preservation device for a steel smelting furnace according to claim 1, characterized in that: Two first fixing seats (11) are fixedly installed on the outside of the outer cylinder (1), and the two first fixing seats (11) are respectively arranged at the upper and lower positions of the outside of the outer cylinder (1), and the inner cavity of the first fixing seat (11) is connected to the inner cavity of the outer cylinder (1).

4. The heat preservation device for a steel smelting furnace according to claim 1, characterized in that: A spiral pipeline groove (7) is provided on the outer side of the inner cylinder (2).

5. The heat preservation device for a steel smelting furnace according to claim 4, characterized in that: The coil (4) has a spiral structure, and a connecting piece (8) is fixedly installed on the inner side of the coil (4). The coil (4) and the connecting piece (8) are both made of copper. One end of the coil (4) is an air outlet end (9), and the other end of the coil (4) is an air inlet end (10). The coil (4) and the connecting piece (8) are fixedly installed on the outer side of the inner tube (2).

6. The heat preservation device for a steel smelting furnace according to claim 5, characterized in that: The pipeline box (3) has a heat-insulating layer inside, and a second fixing seat (12) is fixedly mounted on one side of the pipeline box (3), with a screw groove (13) being provided on the inner side of the second fixing seat (12).

7. The heat preservation device for a steel smelting furnace according to claim 6, characterized in that: A spiral tube (14) is fixedly installed at one end of the connecting seat (5), one end of the air guide pipe (6) passes through the connecting seat (5) and extends to the outside of the connecting seat (5) and is fixedly installed with a limit plate (15), and a plug (16) is fixedly installed at the other end of the air guide pipe (6). The connecting seat (5) is threadedly connected to one end of the second fixed seat (12) through the spiral tube (14), and the plug (16) is inserted into the air inlet end (10) of the coil (4), and the air outlet end (9) is connected to the input end of the external exhaust gas treatment equipment through a pipeline.

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