Continuous high-temperature bell-type annealing furnace for oriented silicon steel

Abstract

The utility model discloses a continuous high-temperature cover type annealing furnace for oriented silicon steel, which belongs to the technical field of annealing furnaces, and comprises an outer shell, a plurality of inner chambers are uniformly arranged in the outer shell, the inner chambers are uniformly arranged in the outer shell, placing trays for placing materials are arranged in the inner chambers, and rotating shafts are mounted at the bottoms of the placing trays; the rotating shaft penetrates through the inner cavity and is in running fit with the inner cavity, the rotating shaft is in sliding fit with the inner cavity, a first crown gear is fixedly connected to the bottom of the rotating shaft, a plurality of second crown gears are rotatably arranged in the outer shell, the first crown gear corresponds to the second crown gears, and the first crown gear is matched with the second crown gears. A driving part is installed in the outer shell and used for driving the second crown gear, high-pressure burner pipelines are arranged in the inner cavity, and a pipeline part used for supplying materials to the multiple high-pressure burner pipelines is installed on the outer shell, so that fast temperature rising and even heating can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of annealing furnace technology, and more specifically, to a continuous high-temperature bell-type annealing furnace for oriented silicon steel. Background Technology

[0002] The annealing process for cold-rolled strip steel is mainly determined based on factors such as the steel's chemical composition, product technical standards, strip dimensions, and coil weight. The process must ensure that the coil layers do not stick together during production and that surface oxidation does not occur. In the bell-type annealing furnace process, the heating rate of the steel is primarily determined by its thermal conductivity. The carbon content and alloy content in the steel have a significant impact on heat conduction. If their content is high, the thermal conductivity is low, and the heating rate should be appropriately slower to avoid excessive internal and external temperature differences that could cause uneven microstructure and properties. From room temperature to 400℃, the heating rate is generally unrestricted.

[0003] Currently, bell-type annealing furnaces for continuous high-temperature treatment of grain-oriented silicon steel are mostly integrated units with large internal spaces. This results in a slow heating process and uneven heating of the silicon steel, which remains stationary for extended periods, leading to low heating efficiency and making them unsuitable for practical use. To address these issues, a solution is proposed below. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a continuous high-temperature bell-type annealing furnace for oriented silicon steel, which can achieve rapid heating and uniform heating.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A continuous high-temperature bell-type annealing furnace for grain-oriented silicon steel includes an outer shell. The outer shell contains a plurality of uniformly arranged inner chambers. Each inner chamber has a material placement tray. A rotating shaft is mounted on the bottom of the tray, passing through the inner chamber and rotatably engaging with it. A first crown gear is fixedly connected to the bottom of the rotating shaft. A plurality of second crown gears are rotatably arranged inside the outer shell. The first and second crown gears correspond to and are mutually adapted to each other. A driving component is installed inside the outer shell to drive the second crown gears. High-pressure burner pipes are located inside each inner chamber. Piping components for supplying material to the high-pressure burner pipes are installed on the outer shell.

[0007] Preferably, the driving component includes a motor, a driving gear, a driven gear, and a rotating rod. The driving gear is rotatably arranged inside the housing. The output end of the motor is fixedly connected to the shaft of the driving gear. Several driven gears are provided, and each driven gear corresponds one-to-one with the second crown gear. The rotating rod is located between the driven gear and the second crown gear. Both ends of the rotating rod are fixedly connected to the shafts of the driving gear and the second crown gear, respectively. The driven gear meshes with the driving gear.

[0008] Preferably, the piping component includes a main pipe and a branch pipe, the main pipe being arranged vertically and passing through the top of the housing, and the branch pipe being used to connect the main pipe and the high-pressure burner pipe.

[0009] Preferably, a support plate is provided on the rotating shaft, the support plate and the rotating shaft are rotatably coupled, and a spring is sleeved on the support plate, the two ends of the spring respectively contacting and being fixedly connected to the support plate and the bottom of the inner cavity.

[0010] Preferably, a solenoid valve is installed on the branch pipe, and a contact sensor is provided inside the outer casing. The detection end of the contact sensor is in contact with the outer arc surface of the first crown gear, and the contact sensor is electrically connected to the solenoid valve.

[0011] Preferably, the inner cavity is provided with a feeding port, and a feeding door is hinged to the feeding port. An inlet is provided on the side of the outer shell, and a sealing door is hinged to the inlet. The feeding port and the inlet correspond to each other.

[0012] Preferably, a limit plate is provided on the inner side of the feeding gate.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] I. This solution divides the internal space of the outer shell into several inner chambers, each independently equipped with a high-pressure burner pipe for heating, improving efficiency. Simultaneously, the outer shell provides insulation. The placement tray inside each inner chamber serves two purposes: firstly, it holds materials; secondly, driven by a drive mechanism, it rotates, causing the materials to rotate and ensuring uniform heating. The tray moves up and down under the weight of the materials, and the meshing between the first and second crown gears engages with the drive mechanism. This allows the tray to rotate when materials are present and to stop working when materials are absent, reducing the power consumption of the drive mechanism and extending its service life.

[0015] Second, the motor drives the drive gear to rotate, which in turn drives the driven gear to rotate, which in turn drives the rotating rod to rotate, and the rotating rod drives the second crown gear to rotate.

[0016] Third, fuel is transported from outside through the main pipe and then distributed to the interior of each high-pressure burner pipeline through the branch pipes to achieve fuel delivery.

[0017] Fourth, the design of the support plate and spring can be used to reset the plate, avoiding manual reset operation and reducing the difficulty of operation.

[0018] 5. When there is material on the placement tray, the first crown gear will move downward and separate from the contact switch. The contact switch receives the signal and feeds back to the corresponding solenoid valve to realize the fuel flow inside the inner chamber, avoid fuel waste, and avoid the trouble of manual operation.

[0019] 6. The feeding port and inlet facilitate the addition and removal of materials.

[0020] 7. The limiting plate is used to limit the vertical movement of the placement plate, thereby ensuring the stable meshing of the first crown gear and the second crown gear. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the top view of this utility model;

[0023] Figure 3 This is a cross-sectional view of the front view of this utility model.

[0024] Figure 4 This is an enlarged structural schematic diagram of A in this utility model;

[0025] Figure 5 This is a schematic diagram of the connection structure between the first crown gear and the second crown gear when there is material on the placement tray of this utility model.

[0026] Figure 6 This is a three-dimensional structural diagram of the first crown gear and the second crown gear of this utility model.

[0027] Explanation of the labels in the diagram:

[0028] 1. Outer shell; 2. Inner chamber; 3. Placement tray; 4. Rotating shaft; 5. First crown gear; 6. Second crown gear; 7. Drive component; 8. High-pressure burner pipe; 9. Pipe fittings; 10. Motor; 11. Drive gear; 12. Driven gear; 13. Rotating rod; 14. Main pipe; 15. Branch pipe; 16. Support plate; 17. Spring; 18. Solenoid valve; 19. Contact sensor; 20. Feed port; 21. Feed gate; 22. Inlet; 23. Sealing door; 24. Limit plate. Detailed Implementation

[0029] Example 1:

[0030] Please see Figure 1-6 A continuous high-temperature bell-type annealing furnace for oriented silicon steel includes an outer shell 1. An inlet 22 is fitted on the side of the outer shell 1, and a sealing door 23 is hinged at the inlet 22. The inlet 22 facilitates material feeding, and the sealing door 23 provides a sealing and heat preservation effect. A support is provided inside the outer shell 1, and inner chambers 2 are symmetrically placed on the support. The inner chambers 2 have a feeding port 20, which corresponds to the inlet 22. The feeding port 20 facilitates the addition of materials into the inner chambers 2. A feeding door 21 is hinged at the feeding port 20, and the feeding door 21 provides a sealing and heat preservation effect.

[0031] The inner chamber 2 is equipped with a high-pressure burner pipe 8, which is arranged vertically. The outer shell 1 is equipped with a pipe fitting 9 for supplying material to several high-pressure burner pipes 8. The pipe fitting 9 includes a main pipe 14 and a branch pipe 15. The main pipe 14 is arranged vertically and passes through the top of the outer shell 1. The branch pipe 15 is used to connect the main pipe 14 and the high-pressure burner pipe 8. External fuel is transported through the main pipe 14 and then distributed to the interior of each high-pressure burner pipe 8 through the branch pipe 15 to realize the fuel delivery.

[0032] The inner chamber 2 is equipped with a placement tray 3 for placing materials. A rotating shaft 4 is installed at the bottom of the placement tray 3. The rotating shaft 4 is vertically arranged, and one end of the rotating shaft 4 is fixedly connected to the center of the bottom of the placement tray 3. The rotating shaft 4 is cylindrical and passes through the inner chamber 2 and the support. The rotating shaft 4, the inner chamber 2, and the support are in a rotatable engagement. The outer side of the end of the rotating shaft 4 located outside the inner chamber 2 is fixedly connected to a support plate 16. The support plate 16 is in a rotatable engagement with the rotating shaft 4. A spring 17 is sleeved on the support plate 16. The two ends of the spring 17 are in contact with and fixedly connected to the support plate 16 and the bottom of the inner chamber, respectively. The design of the support plate 16 and the spring 17 can be used to reset the placement tray 3, avoiding the trouble of manual reset and reducing the difficulty of operation.

[0033] A first crown gear 5 is fixedly connected to the bottom of the rotating shaft 4. Several second crown gears 6 are rotatably arranged inside the outer casing 1. The first crown gear 5 and the second crown gear 6 correspond to each other and are compatible with each other. A driving component 7 is installed inside the outer casing 1. The driving component 7 is used to drive the second crown gears 6. By moving the rotating shaft 4 up and down, the meshing and disengagement between the first crown gear 5 and the second crown gear 6 can be realized. This allows only the required placement tray 3 to be driven, reducing the power of the driving component 7 and reducing energy consumption. At the same time, a limiting plate 24 is provided on the inner side of the loading gate 21. The limiting plate 24 is used to limit the placement tray 3 meshing with the first crown gear 5 and the second crown gear 6, ensuring stable meshing between the first crown gear 5 and the second crown gear 6.

[0034] The driving component 7 includes a motor 10, a driving gear 11, a driven gear 12, and a rotating rod 13. The driving gear 11 is rotatably arranged at the bottom of the bracket. The output end of the motor 10 is fixedly connected to the shaft of the driving gear 11. The motor 10 is fixedly connected to the bracket. There are two driven gears 12, which correspond one-to-one with the second crown gear 6. The rotating rod 13 is located between the driven gear 12 and the second crown gear 6. The rotating rod 13 passes through the shafts of the driven gear 12 and the second crown gear 6, respectively. The rotating rod 13 is fixedly connected to the driven gear 12 and the second crown gear 6. The driven gear 12 meshes with the driving gear 11. At the same time, a rotating groove is opened at the bottom of the rotating shaft 4. One end of the rotating rod 13 is located inside the groove. The rotating rod 13 and the groove are rotatably engaged and slidably engaged.

[0035] Motor 10 drives drive gear 11 to rotate, drive gear 11 drives driven gear 12 to rotate, driven gear 12 drives rotating rod 13 to rotate, rotating rod 13 drives second crown gear 6 to rotate, second crown gear 6 drives meshing first crown gear 5 to rotate, first crown gear 5 drives rotating shaft 4 to rotate, thereby driving placement plate 3 to rotate. The rotating placement plate drives the material to rotate, achieving uniform heating of the material.

[0036] This application also includes a controller mounted on the housing, a solenoid valve 18 mounted on the branch pipe 15, a contact sensor 19 disposed inside the housing 1, the detection end of the contact sensor 19 being in contact with the outer arc surface of the first crown gear 5, and the motor 10, the contact sensor 19 and the solenoid valve 18 being electrically connected to the controller.

[0037] The controller, as the core of the entire system, coordinates the operation of all components. The solenoid valve 18 installed on branch pipe 15 precisely controls the on / off state and flow rate of fuel entering the high-pressure burner pipe 8. A contact sensor 19 installed inside the housing 1 maintains contact with the outer arc surface of the first crown gear 5, monitoring its position in real time. The motor 10, contact sensor 19, and solenoid valve 18 are all electrically connected to the controller, forming a closed-loop control system. When the contact sensor 19 detects that the first crown gear 5 has descended to the engagement position due to material on the placement plate 3, it immediately sends a signal to the controller. The controller then controls the solenoid valve 18 on the corresponding branch pipe 15 to open, allowing fuel to enter the corresponding high-pressure burner pipe 8 for combustion; simultaneously, it controls the motor 10 to start, driving the drive component 7 to rotate the placement plate 3. Conversely, when the first crown gear 5 rises to the disengagement position, the sensor signal changes, the controller controls the solenoid valve 18 to close, and the motor 10 stops driving the placement plate 3. This achieves automatic control of heating and drive based on the presence or absence of material, improving the equipment's intelligence and energy efficiency.

[0038] Working principle:

[0039] In use, both the sealing door 23 and the loading door 21 are opened, and the material is placed on the placement tray 3. The weight of the material acts on the placement tray 3, causing it to move downwards. The placement tray 3 then moves the rotating shaft 4 downwards, which in turn moves the support plate 16 downwards. The support plate 16 stretches the spring 17, generating elastic force. Simultaneously, the rotating shaft 4 moves the first crown gear 5 downwards until it meshes with the second crown gear 6. After closing the loading door 21, the loading door 21 moves the limiting plate 24. The two limiting plates 24 move to the upper surface of the placement tray 3, limiting the placement tray 3 and preventing the first crown gear 5 and the second crown gear 6 from separating. Simultaneously, as the first crown gear 5 moves downwards, it separates from the detection end of the contact sensor 19, causing the contact sensor 19 to send a signal to the controller. The controller then sends a signal to the corresponding inner chamber 2. The solenoid valve 18 is opened, allowing fuel inside the main pipe 14 to be transported to the high-pressure burner pipe 8 through the branch pipe 15. After ignition, the fuel inside the high-pressure burner pipe 8 is ignited, causing the material to burn and anneal. At the same time, the motor 10 is controlled to rotate, which drives the drive gear 11 to rotate. The drive gear 11 drives the meshing driven gear 12 to rotate, which drives the rotating rod 13 to rotate. The rotating rod 13 drives the second crown gear 6 to rotate, which drives the meshing first crown gear 5. The first crown gear 5 drives the placement plate 3 to rotate through the rotating shaft 4. The placement plate 3 drives the material to rotate, ensuring that the material is heated evenly. After annealing is completed, the sealing door 23 and the feeding door 21 are opened to remove the material. The placement plate 3 is reset under the elastic force of the spring 17, and the first crown gear 5 and the second crown gear 6 are separated.

Claims

1. A continuous high-temperature bell-type annealing furnace for grain-oriented silicon steel, characterized in that: The device includes an outer shell (1), and a plurality of inner chambers (2) are evenly arranged inside the outer shell (1). The inner chambers (2) are evenly arranged inside the outer shell (1). A placement tray (3) for placing materials is provided inside the inner chamber (2). A rotating shaft (4) is installed at the bottom of the placement tray (3). The rotating shaft (4) passes through the inner chamber (2) and is rotatably engaged with the inner chamber (2). The rotating shaft (4) and the inner chamber (2) are also slidably engaged. A first crown gear (5) is fixedly connected to the bottom of the rotating shaft (4). The outer shell (1) is rotatably equipped with a plurality of second crown gears (6), the first crown gear (5) and the second crown gear (6) correspond to each other and are adapted to each other. The outer shell (1) is equipped with a driving component (7) for driving the second crown gears (6). The inner cavity (2) is equipped with a high-pressure burner pipe (8). The outer shell (1) is equipped with a pipe fitting (9) for feeding the plurality of high-pressure burner pipes (8).

2. The continuous high-temperature bell-type annealing furnace for grain-oriented silicon steel according to claim 1, characterized in that: The driving component (7) includes a motor (10), a driving gear (11), a driven gear (12), and a rotating rod (13). The driving gear (11) is rotatably arranged inside the outer casing (1). The output end of the motor (10) is fixedly connected to the axis of the driving gear (11). Several driven gears (12) are provided, and each of the several driven gears (12) corresponds to the second crown gear (6). The rotating rod (13) is located between the driven gear (12) and the second crown gear (6). The two ends of the rotating rod (13) are fixedly connected to the axis of the driving gear (11) and the second crown gear (6), respectively. The driven gears (12) mesh with the driving gears (11).

3. The continuous high-temperature bell-type annealing furnace for grain-oriented silicon steel according to claim 1, characterized in that: The pipe fitting (9) includes a main pipe (14) and a branch pipe (15). The main pipe (14) is arranged vertically and passes through the top of the outer casing (1). The branch pipe (15) is used to connect the main pipe (14) and the high-pressure burner pipe (8).

4. The continuous high-temperature bell-type annealing furnace for grain-oriented silicon steel according to claim 1, characterized in that: A support plate (16) is provided on the rotating shaft (4). The support plate (16) and the rotating shaft (4) are rotatably connected. A spring (17) is sleeved on the support plate (16). The two ends of the spring (17) are in contact with and fixedly connected to the support plate (16) and the bottom of the inner cavity, respectively.

5. The continuous high-temperature bell-type annealing furnace for grain-oriented silicon steel according to claim 3, characterized in that: A solenoid valve (18) is installed on the branch pipe (15), and a contact sensor (19) is provided inside the outer shell (1). The detection end of the contact sensor (19) is in contact with the outer arc surface of the first crown gear (5), and the contact sensor (19) and the solenoid valve (18) are electrically connected.

6. The continuous high-temperature bell-type annealing furnace for grain-oriented silicon steel according to claim 1, characterized in that: The inner chamber (2) is provided with a feeding port (20), and a feeding door (21) is hinged at the feeding port (20). An inlet (22) is provided on the side of the outer shell (1), and a sealing door (23) is hinged at the inlet (22). The feeding port (20) and the inlet (22) correspond to each other.

7. A continuous high-temperature bell-type annealing furnace for grain-oriented silicon steel according to claim 6, characterized in that: The inner side of the loading gate (21) is provided with a limiting plate (24).

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