Natural gas annealing furnace for manufacturing oriented silicon steel

Abstract

The utility model relates to the technical field of oriented silicon steel production, and discloses a natural gas annealing furnace for oriented silicon steel manufacturing, which comprises an annealing furnace, one side of an inner cavity of the annealing furnace is connected with a push-pull plate in a sliding manner, and four heat insulation mounting seats are mounted at the top of the push-pull plate. The annular placing plate slides downwards along the outer wall of the cross plate, the heat insulation mounting base moves downwards synchronously in the first limiting sliding groove, the alloy spring is pressed and compressed, buffering supporting is achieved, meanwhile, the annular placing plate descends to drive the first pull rod to move downwards, a connecting block and a second pull rod are sequentially pulled, and a supporting rod is made to rotate by 90 degrees with the mounting plate as the axis to be in an explosion state. On one hand, layered placement of the oriented silicon steel coils is achieved, the problems that heat permeation is difficult and heating is uneven due to accumulation in the past are solved, the product quality is greatly improved, the overall production process is accelerated, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of grain-oriented silicon steel production technology, specifically to a natural gas annealing furnace used in the production of grain-oriented silicon steel. Background Technology

[0002] Natural gas annealing furnaces used in the production of grain-oriented silicon steel are key specialized heat treatment equipment. They use clean and efficient natural gas as fuel and create a suitable high-temperature environment within a closed box-type or other specific structural space by precisely controlling the combustion process. Their core function is to anneal grain-oriented silicon steel, preparing it for further processing and the production of high-performance electrical equipment cores.

[0003] In the production process of grain-oriented silicon steel, the natural gas annealing furnace plays a crucial role. Typically, to improve production efficiency, multiple workpieces are stacked on a rack and fed into the furnace for annealing. However, this conventional operation has hidden dangers. Due to the stacking of workpieces, heat cannot penetrate fully into the stacked areas, resulting in uneven heating of the upper and lower workpieces. This not only hinders the effective adjustment of the internal crystal structure of silicon steel and fails to completely eliminate residual stress, but also affects the uniformity of the material structure, ultimately making it difficult for the product to meet the ideal performance standards and reducing the yield rate of finished products. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a natural gas annealing furnace for the production of grain-oriented silicon steel. It has the advantage of uniform heating during the combustion of grain-oriented silicon steel, thus solving the problem mentioned in the background technology that uneven heating caused by the stacking of workpieces affects the performance of grain-oriented silicon steel products and the yield of finished products.

[0005] To achieve the aforementioned goal of uniform heating during combustion of grain-oriented silicon steel, this utility model provides the following technical solution: It includes an annealing furnace, with a push-pull plate slidably connected to one side of the furnace's inner cavity. Four heat-insulating mounting seats are installed on the top of the push-pull plate. A cross plate is fixedly connected to the top of one heat-insulating mounting seat. An annular placement plate is slidably connected to the bottom of the outer wall of the cross plate. Pull rods are fixedly connected to all four sides of the annular placement plate. Mounting plates are fixedly connected to all four sides of the outer wall of the cross plate. A connecting block is fixedly connected to one side of pull rod one. A pull rod two is rotatably connected to the side of the connecting block away from pull rod one. A support rod is rotatably connected through and to one side of the mounting plate, and one side of the support rod is rotatably connected to the mounting plate. Limiting slide rods are fixedly connected to all four sides of the bottom of the annular placement plate. Limiting slide grooves are opened through and on the top four sides of the heat-insulating mounting seats, and the limiting slide rods slide within the limiting slide grooves. Alloy springs are fixedly connected to one side of the inner cavity of each of the four limiting slide grooves, and the side of the alloy springs away from the limiting slide grooves is fixedly connected to the limiting slide rods.

[0006] As a further embodiment of this utility model: an upper and lower material box is connected through and fixedly connected to one side of the outer wall of the annealing furnace, and the bottom side of the upper and lower material box is fixedly connected to the inner cavity of the annealing furnace. Slide rails are provided on both sides of the bottom of the upper and lower material boxes, and the push-pull plate slides in the slide rails. Limiting grooves are provided on both sides of the slide rails.

[0007] As a further improvement of this utility model: both sides of the push-pull plate are fixedly connected to limit blocks, and the limit blocks slide within the limit groove two.

[0008] As a further improvement of this utility model: metal annular tubes are installed in the upper and lower parts of the inner cavity of the annealing furnace, and uniformly distributed combustion nozzles are installed on the side of the two metal annular tubes away from the annealing furnace. A uniformly distributed metal vent pipe runs through and is fixedly connected between the two combustion nozzles.

[0009] As a further improvement of this utility model: a metal annular tube on one side passes through the annealing furnace and is fixedly connected to a flange connecting pipe on the side closest to the annealing furnace.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] In this invention, during operation, the oriented silicon steel coil is placed on the cross plate. Relying on the weight of the silicon steel coil, the annular placement plate slides down along the outer wall of the cross plate. The heat insulation mounting seat moves down synchronously within the limiting slide groove. The alloy spring is compressed and buffered. At the same time, the annular placement plate descends, causing the pull rod to move down, which in turn pulls the connecting block and the second pull rod, causing the support rod to rotate 90 degrees around the mounting plate as the axis and "explode". The next oriented silicon steel coil is then supported. This invention achieves layered placement of oriented silicon steel coils, changing the previous problem of difficult heat penetration and uneven heating caused by stacking, greatly improving product quality, accelerating the overall production process, and increasing production efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the push-pull plate of this utility model;

[0014] Figure 3 This is a schematic diagram of the interior of the annealing furnace of this utility model;

[0015] Figure 4 This is a schematic diagram of the cross plate of this utility model.

[0016] In the diagram: 1. Annealing furnace; 2. Push-pull plate; 3. Insulated mounting base; 4. Cross plate; 5. Annular placement plate; 6. Tie rod one; 7. Connecting block; 8. Tie rod two; 9. Mounting plate; 10. Support rod; 11. Limiting slide rod; 12. Limiting slide groove one; 13. Alloy spring; 14. Loading and unloading boxes; 15. Limiting slide groove two; 16. Slide rail; 17. Limiting block; 18. Metal annular tube; 19. Combustion nozzle; 20. Metal vent pipe; 21. Flange connecting pipe. 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] Please see Figures 1-4In this embodiment of the invention, an annealing furnace 1 is included. A push-pull plate 2 is slidably connected to one side of the inner cavity of the annealing furnace 1. Four heat-insulating mounting seats 3 are installed on the top of the push-pull plate 2. A cross plate 4 is fixedly connected to the top of one heat-insulating mounting seat 3. An annular placement plate 5 is slidably connected to the bottom of the outer wall of the cross plate 4. When a grain-oriented silicon steel coil is placed on the cross plate 4, the cross plate 4 will be in close contact with the annular placement plate 5. Due to the gravity of the grain-oriented silicon steel coil itself, the annular placement plate 5 will slowly slide downward along the outer wall of the cross plate 4. The heat-insulating mounting base 3 connected to it will also slide down synchronously within the limiting slide groove 12. Pull rods 6 are fixedly connected to all four sides of the annular placement plate 5. Mounting plates 9 are fixedly connected to all four sides of the outer wall of the cross plate 4. A connecting block 7 is fixedly connected to one side of each pull rod 6. A pull rod 8 is rotatably connected to the side of the connecting block 7 away from pull rod 6. A support rod 10 is rotatably connected through one side of the mounting plate 9, and one side of the support rod 10 is rotatably connected to the mounting plate 9. As the annular placement plate 5 descends, pull rods 6 will be driven... As the pull rod 6 moves downward, the connecting block 7 and the second pull rod 8 will move downward simultaneously. The downward pressing action of the second pull rod 8 will cause the support rod 10 to rotate 90 degrees rapidly around the mounting plate 9, resulting in an "explosion" state. The bottom four sides of the annular placement plate 5 are fixedly connected to limit sliding rods 11. The top four sides of the heat insulation mounting base 3 are provided with limit sliding grooves 12, and the limit sliding rods 11 slide within the limit sliding grooves 12. Alloy springs 13 are fixedly connected to one side of the inner cavity of the four limit sliding grooves 12. Furthermore, the side of the alloy spring 13 away from the limiting slide groove 12 is fixedly connected to the limiting slide rod 11. Then, another oriented silicon steel coil is placed on the outer wall of the cross plate 4. At this time, the support rod 10, which is in a burst state, can provide support for the second oriented silicon steel coil, so that the oriented silicon steel coil can be placed in layers during the heating and combustion process. This effectively avoids the problem that the heat cannot be fully penetrated in the stacked part due to the oriented silicon steel coils being piled up, which in turn causes uneven heating of the upper and lower workpieces. This greatly improves the quality and efficiency of the annealing process.

[0019] Among them, the heat-insulating mounting base 3 is made of heat-insulating material to prevent the alloy spring 13 from deforming due to heat during use, and the internal structure of the annealing furnace 1 is made of metal.

[0020] An upper and lower material boxes 14 are connected to one side of the outer wall of the annealing furnace 1 and fixedly connected to the bottom of the upper and lower material boxes 14. The bottom of the upper and lower material boxes 14 is fixedly connected to the inner cavity of the annealing furnace 1. Slide rails 16 are provided on both sides of the bottom of the upper and lower material boxes 14, and the push-pull plate 2 slides in the slide rails 16. Open the door on the front side of the upper and lower material boxes 14, and then the operator holds the handle installed on the front side of the push-pull plate 2 and slowly pulls the push-pull plate 2 out smoothly. During this process, the push-pull plate 2 will slide smoothly along the slide rails 16. Limiting grooves 15 are provided on both sides of the slide rails 16. Limiting blocks 17 are fixedly connected on both sides of the push-pull plate 2, and the limiting blocks 17 slide in the limiting grooves 15. At the same time, the limiting blocks 17 will also slide synchronously in the limiting grooves 15, accurately limiting the push-pull plate 2 and effectively preventing the push-pull plate 2 from accidentally leaving the annealing furnace 1.

[0021] Metal ring pipes 18 are installed in both the upper and lower parts of the inner cavity of the annealing furnace 1. They are precisely connected to the external natural gas pipeline through the flange connection pipe 21, so that natural gas can be smoothly introduced and first flow into the metal ring pipe 18 located in the upper layer. Next, the upper metal annular pipe 18, through the key channel of the metal vent pipe 20, establishes a tight connection with the lower metal annular pipe 18, efficiently and stably delivering natural gas to the interior of the lower metal annular pipe 18, ensuring the smooth transmission of natural gas throughout the entire pipeline system. On the side of the two metal annular pipes 18 away from the annealing furnace 1, evenly distributed combustion nozzles 19 are installed, and evenly distributed metal vent pipes 20 are connected and fixed between the two combustion nozzles 19. On the side of one metal annular pipe 18 closer to the annealing furnace 1, a flange connecting pipe 21 is connected and fixed to the annealing furnace 1. The metal annular pipes 18 and combustion nozzles 19 are distributed in two layers according to process requirements. Correspondingly, the oriented silicon steel coils are also cleverly divided into upper and lower layers, precisely corresponding to each other. This rigorous structural design can ensure that heat is evenly distributed over each layer of oriented silicon steel coils to the greatest extent.

[0022] The working principle of this utility model is as follows: When the work is officially started, firstly, open the door on the front side of the loading and unloading box 14. Then, the worker holds the handle installed on the front side of the push-pull plate 2 and slowly pulls the push-pull plate 2 out. During this process, the push-pull plate 2 will slide smoothly along the slide rail 16. At the same time, the limiting block 17 will also slide synchronously in the limiting slide groove 15, accurately limiting the push-pull plate 2 and effectively preventing the push-pull plate 2 from accidentally leaving the annealing furnace 1, ensuring the safety and stability of the operation.

[0023] When the push-pull plate 2 is fully pulled out, the oriented silicon steel coil can be placed on the cross plate 4. At this time, the cross plate 4 will be in close contact with the annular placement plate 5. Due to the weight of the oriented silicon steel coil itself, the annular placement plate 5 will slowly slide down along the outer wall of the cross plate 4. The heat insulation mounting base 3 connected to it will also slide down synchronously in the limiting slide groove 12. During this process, the alloy spring 13 will be squeezed and gradually compressed, playing a dual role of buffering and support.

[0024] As the annular placement plate 5 descends, the first pull rod 6 will be pulled down along with it. The downward movement of the first pull rod 6 will cause the connecting block 7 and the second pull rod 8 to move down synchronously. The downward pressing action of the second pull rod 8 will cause the support rod 10 to rotate 90 degrees rapidly around the mounting plate 9 as the axis, presenting a "bursting" state.

[0025] Subsequently, another oriented silicon steel coil is placed on the outer wall of the cross plate 4. At this time, the support rod 10, which is in a burst state, can provide support for the second oriented silicon steel coil, so that the oriented silicon steel coil can be placed in layers during the heating and combustion process. This effectively avoids the problem that the heat cannot fully penetrate the stacked part due to the oriented silicon steel coils being piled up, which would cause uneven heating of the upper and lower workpieces. This greatly improves the quality and efficiency of the annealing process.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A natural gas annealing furnace for orienting silicon steel production, comprising an annealing furnace (1), characterized in that: The inner cavity side of the annealing furnace (1) is slidably connected with a push-pull plate (2), the top of the push-pull plate (2) is installed with four heat insulation mounting seats (3), the top of one of the heat insulation mounting seats (3) is fixedly connected with a cross plate (4), the outer wall bottom of the cross plate (4) is slidably connected with an annular placing plate (5), the four sides of the annular placing plate (5) are fixedly connected with pull rods (6), the four sides of the outer wall of the cross plate (4) are fixedly connected with mounting plates (9), one side of the pull rod (6) is fixedly connected with a connecting block (7), the side away from the pull rod (6) of the connecting block (7) is rotatably connected with a pull rod (8), one side of the mounting plate (9) is rotatably connected with a supporting rod (10), and one side of the supporting rod (10) is rotatably connected with the mounting plate (9), the bottom of the four sides of the annular placing plate (5) is fixedly connected with limit sliding rods (11), the top of the four sides of the heat insulation mounting seat (3) is rotatably connected with limit sliding grooves (12), and the limit sliding rod (11) is slidably connected in the limit sliding groove (12), the inner cavity side of the four limit sliding grooves (12) is fixedly connected with alloy springs (13), and the side away from the limit sliding groove (12) of the alloy spring (13) is fixedly connected with the limit sliding rod (11).

2. The natural gas annealing furnace for orienting silicon steel production according to claim 1, characterized in that: The outer wall side of the annealing furnace (1) is rotatably connected with an upper and lower feeding box (14), and the bottom side of the upper and lower feeding box (14) is fixedly connected in the inner cavity of the annealing furnace (1), the bottom of the upper and lower feeding box (14) is rotatably connected with sliding rails (16), and the push-pull plate (2) is slidably connected in the sliding rail (16), and the sliding rail (16) is rotatably connected with limit sliding grooves (15) on both sides.

3. The natural gas annealing furnace for orienting silicon steel production according to claim 1, characterized in that: The both sides of the push-pull plate (2) are fixedly connected with limit blocks (17), and the limit block (17) is slidably connected in the limit sliding groove (15).

4. The natural gas annealing furnace for orienting silicon steel production according to claim 1, characterized in that: The inner cavity of the annealing furnace (1) is rotatably connected with metal annular pipes (18), and the side away from the annealing furnace (1) of the two metal annular pipes (18) is rotatably connected with uniformly distributed combustion nozzles (19), and the combustion nozzles (19) are rotatably connected with uniformly distributed metal air pipes (20).

5. The natural gas annealing furnace for orienting silicon steel production according to claim 4, characterized in that: The side of the metal annular pipe (18) close to the annealing furnace (1) is rotatably connected with a flange connecting pipe (21).

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