Continuous annealing furnace for hot galvanizing line production
By introducing a motor drive system and a flame nozzle into the continuous annealing furnace used in hot-dip galvanizing production, uniform heating of the steel strip is achieved, solving the thermal stress problem caused by uneven heating and improving the strength and toughness of the steel strip.
Patent Information
- Application Number
- CN202520012161.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Common continuous annealing furnaces used in hot-dip galvanizing production lines lack uniform heating capabilities, resulting in uneven heating of the steel strip, generating thermal stress, and affecting the strength and toughness of the steel strip.
The first motor drives the drive shaft to rotate, which in turn drives the connecting plate and the storage plate to rotate. The flame head is used to heat the steel strip evenly, so as to achieve uniform heating of the steel strip.
This ensures that the steel strip is heated evenly during the heating process, avoids residual thermal stress, and improves the overall strength and toughness of the steel strip.
Smart Images
Figure CN223620438U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of annealing technology for hot-dip galvanizing line production, and in particular to a continuous annealing furnace for hot-dip galvanizing line production. Background Technology
[0002] Annealing is a metal heat treatment process in which steel strip is slowly heated to a certain temperature, held for a sufficient time, and then cooled at a suitable rate. It is used to improve or eliminate processing stress in steel strip, refine grains, and improve processing performance. During the annealing process, the workpiece needs to be heated evenly, so it is necessary to rotate the workpiece continuously.
[0003] Common continuous annealing furnaces used in hot-dip galvanizing production lines only include annealing functions, capable of heating and annealing steel strips. However, they lack the function of uniform heating, which cannot guarantee uniform heating of the steel strips. This can easily lead to uneven heating rates across the entire steel strip, resulting in thermal stress within the strip. After cooling, these thermal stresses remain inside the steel strip, causing different stress states in different parts. In subsequent use, areas with higher strength may bear more loads, while areas with lower strength may deform or break first, affecting the strength and toughness of the steel strip.
[0004] Therefore, to address the lack of uniform heating function in the continuous annealing furnace used for hot-dip galvanizing production, a continuous annealing furnace for hot-dip galvanizing production can be designed. A first motor drives the drive shaft to rotate, which in turn drives the connecting plate to rotate. The connecting plate, in turn, drives the placement plate to rotate through its connection with the connecting groove. The placement plate then drives the driven shaft to rotate, causing the steel strip in the placement groove to rotate as well. The steel strip is then uniformly heated by the flames emitted from the burner head. Utility Model Content
[0005] To overcome the shortcomings of common continuous annealing furnaces used in hot-dip galvanizing production, which lack uniform heating and cannot guarantee even heating of the steel strip, resulting in uneven heating rates and internal thermal stress, these thermal stresses remain inside the steel strip after cooling. This causes different stress states in different parts of the strip, leading to areas with higher strength bearing more loads during subsequent use, while areas with lower strength may deform or break first, affecting the strength and toughness of the steel strip.
[0006] The technical solution of this utility model is as follows: a continuous annealing furnace for hot-dip galvanizing line production, including a furnace body; it also includes a supporting horizontal plate, a slot, a driven shaft, a placement plate, a connecting groove, a first motor, a drive shaft, and a connecting plate. The supporting horizontal plate is arranged in the middle of the furnace body. A slot is opened in the center of the top of the supporting horizontal plate. The driven shaft is rotatably connected to the bottom of the slot. A placement plate is arranged at the top of the driven shaft. A connecting groove is opened in the middle of the top of the placement plate. The first motor is arranged in the center of the top of the furnace body. The output end of the bottom of the first motor is connected to the drive shaft. The drive shaft passes through the furnace body and is connected to the connecting plate.
[0007] Preferably, a first motor drives a drive shaft to rotate, which in turn drives a connecting plate to rotate. The connecting plate, in turn, drives a storage plate to rotate through its connection with a connecting groove. The storage plate then drives a driven shaft to rotate, causing the steel strip inside the storage groove to rotate as well. The steel strip is then uniformly heated by flames emitted from the burner head. This addresses the common problem of continuous annealing furnaces used in hot-dip galvanizing production lines, which only include annealing functions and can heat and anneal the steel strip, but lack the function of uniform heating. This makes it impossible to ensure uniform heating of the steel strip, which can easily lead to uneven heating rates throughout the steel strip. This results in thermal stress inside the steel strip, and after cooling, these thermal stresses remain inside the steel strip, causing different stress states in different parts. In subsequent use, areas with higher strength may bear more loads, while areas with lower strength may deform or break first, affecting the strength and toughness of the steel strip.
[0008] Preferably, the bottom end of the connecting plate is inserted into the interior of the connecting groove, and two storage slots are symmetrically opened on the left and right sides of the top of the storage plate, corresponding to the positions of the connecting grooves.
[0009] Preferably, a drive plate is provided in the middle of the bottom of the support plate, and a second motor is provided at the bottom of the middle of the rear side of the furnace body.
[0010] Preferably, a lead screw is connected to the output end of the second motor, and the front end of the lead screw passes through the furnace body and is threadedly connected to the drive plate.
[0011] Preferably, a connecting rod is provided in the middle of the front side of the supporting cross plate, and a sealing door is connected to the front end of the connecting rod.
[0012] Preferably, two driven plates are symmetrically arranged on the left and right sides of the bottom of the supporting horizontal plate, and two concave slide rails are symmetrically arranged on the left and right sides of the bottom of the furnace body corresponding to the positions of the driven plates.
[0013] Preferably, the bottom end of the driven plate is inserted into the interior of the concave slide rail, and several flame heads are symmetrically arranged at equal intervals on the left and right sides of the furnace body, corresponding to the positions of the placement plates.
[0014] The beneficial effects of this utility model are:
[0015] 1. The drive shaft is rotated by the first motor, which in turn drives the connecting plate to rotate. The connecting plate, in turn, drives the placement plate to rotate through its connection with the connecting groove. The placement plate then drives the driven shaft to rotate, causing the steel strip in the placement groove to rotate as well. The steel strip is uniformly heated by the flames emitted from the burner head. This addresses the common problem of continuous annealing furnaces used in hot-dip galvanizing production lines, which only have an annealing function and can heat and anneal the steel strip, but lack the function of uniform heating. This makes it impossible to ensure that the steel strip is heated evenly, which can easily lead to uneven heating rates throughout the steel strip. This results in thermal stress inside the steel strip. After cooling, these thermal stresses remain inside the steel strip, causing different stress states in different parts. In subsequent use, areas with high strength may bear more loads, while areas with low strength may deform or break first, affecting the strength and toughness of the steel strip. Attached Figure Description
[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of a continuous annealing furnace for hot-dip galvanizing line production according to this utility model.
[0017] Figure 2 The diagram shown is a cross-sectional view of the furnace body of a continuous annealing furnace for hot-dip galvanizing line production according to this utility model.
[0018] Figure 3 The diagram shown is an exploded view of the rotating assembly of a continuous annealing furnace for hot-dip galvanizing line production according to this utility model.
[0019] Figure 4 The diagram shown is a structural schematic of a continuous annealing furnace connecting plate for hot-dip galvanizing line production according to this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1. Furnace body; 2. Supporting horizontal plate; 3. Slot; 4. Driven shaft; 5. Storage plate; 6. Connecting slot; 7. First motor; 8. Drive shaft; 9. Connecting plate; 10. Storage slot; 11. Drive plate; 12. Second motor; 13. Lead screw; 14. Connecting rod; 15. Sealing door; 16. Driven plate; 17. Concave slide rail; 18. Flame head. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Please see Figures 1-4This utility model provides an embodiment: a continuous annealing furnace for hot-dip galvanizing line production, including a furnace body 1; it also includes a supporting horizontal plate 2, a slot 3, a driven shaft 4, a placement plate 5, a connecting groove 6, a first motor 7, a drive shaft 8, and a connecting plate 9. The supporting horizontal plate 2 is located in the middle of the interior of the furnace body 1. A slot 3 is formed at the center of the top of the supporting horizontal plate 2. The driven shaft 4 is rotatably connected to the bottom of the slot 3. The placement plate 5 is located at the top of the driven shaft 4. A connecting groove 6 is formed in the middle of the top of the placement plate 5. The first motor 7 is located at the center of the top of the furnace body 1. The output end of the first motor 7 is connected to the drive shaft 8. The drive shaft 8 passes through the furnace body 1 and is connected to the connecting plate 9. The first motor 7 drives the drive shaft 8 to rotate, which in turn drives the connecting plate 9 to rotate. The connection with the connecting groove 6 drives the rotating plate 5, which in turn drives the driven shaft 4 to rotate. At this time, the steel strip in the groove 10 rotates accordingly. The flames emitted from the burner head 18 uniformly heat the steel strip, thus solving the problem of common continuous annealing furnaces used in hot-dip galvanizing production lines, which only have annealing functions and can heat and anneal the steel strip, but lack the function of uniform heating. This makes it impossible to ensure that the steel strip is heated evenly, which can easily lead to uneven heating speeds throughout the steel strip. This results in thermal stress inside the steel strip. After cooling, these thermal stresses remain inside the steel strip, causing different stress states in different parts. In subsequent use, areas with high strength may bear more loads, while areas with low strength may deform or break first, affecting the strength and toughness of the steel strip.
[0023] Please see Figures 2-4 In this embodiment, a connecting rod 14 is provided in the middle of the front side of the supporting horizontal plate 2, and a sealing door 15 is connected to the front end of the connecting rod 14. Two driven plates 16 are symmetrically arranged on the left and right sides of the bottom of the supporting horizontal plate 2. Two concave slide rails 17 are symmetrically arranged on the left and right sides of the bottom of the furnace body 1, corresponding to the positions of the driven plates 16. The bottom ends of the driven plates 16 are inserted into the concave slide rails 17. Several flame heads 18 are symmetrically arranged at equal intervals on the left and right sides of the furnace body 1, corresponding to the positions of the storage plates 5. The external flame-throwing equipment is connected to the flame heads 18. At this time, the sealing door 15 is in the open state. The steel strip is placed inside the storage slot 10, and then... The second motor 12 is started, which drives the lead screw 13 to rotate. The lead screw 13 drives the drive plate 11 to move towards the rear side inside the furnace body 1. The drive plate 11 then drives the support plate 2 to move backward. The support plate 2 then drives the driven plate 16 to slide backward inside the concave slide rail 17. At the same time, the support plate 2 also drives the sealing door 15 to move towards the furnace body 1 through the connecting rod 14 until the sealing door 15 fits against the furnace body 1, thereby sealing the furnace body 1. While the support plate 2 drives the placement plate 5 to move backward, the connecting plate 9 will be inserted into the connecting groove 6. Then, the external flame-spraying equipment is started and flames are sprayed into the furnace body 1 through the flame-spraying head 18.
[0024] Please see Figures 1-4 In this embodiment, the bottom end of the connecting plate 9 is inserted into the interior of the connecting groove 6. Two symmetrical storage slots 10 are provided on the left and right sides of the top of the storage plate 5, corresponding to the positions of the connecting groove 6. A drive plate 11 is located in the middle of the bottom of the supporting horizontal plate 2. A second motor 12 is located at the bottom of the middle rear side of the furnace body 1. A lead screw 13 is connected to the output end of the front side of the second motor 12. The front end of the lead screw 13 passes through the furnace body 1 and is threadedly connected to the drive plate 11. While the external flame-spraying equipment is heating the furnace, the first motor 7 drives the drive shaft 8 to rotate. The drive shaft 8 drives the connecting plate 9 to rotate, and the connecting plate 9 is then... The connection with the connecting groove 6 causes the placement plate 5 to rotate, which in turn drives the driven shaft 4 to rotate. At this time, the steel strip in the placement groove 10 rotates accordingly. The flame emitted from the burner head 18 heats the steel strip evenly, achieving uniform heating and preventing uneven heating of the entire steel strip, which would cause thermal stress inside the steel strip. After cooling, these thermal stresses remain inside the steel strip, resulting in different stress states in different parts. In subsequent use, areas with high strength may bear more loads, while areas with low strength may deform or break first, affecting the strength and toughness of the steel strip.
[0025] During operation, the external flame-spraying equipment is connected to the flame-spraying head 18. At this time, the sealing door 15 is in the open state. The steel strip is placed inside the storage slot 10, and then the second motor 12 is started. The second motor 12 drives the lead screw 13 to rotate. The lead screw 13 drives the drive plate 11 to move towards the rear side inside the furnace body 1. The drive plate 11 then drives the support horizontal plate 2 to move backward. The support horizontal plate 2 then drives the driven plate 16 to slide backward inside the concave slide rail 17. At the same time, the support horizontal plate 2 also drives the sealing door 15 to move towards the furnace body 1 through the connecting rod 14 until the sealing door 15 is in contact with the furnace body 1, thereby sealing the furnace body 1. As the support plate 2 moves the placement plate 5 backward, the connecting plate 9 inserts into the connecting groove 6. Then, the external flame-spraying device is activated, spraying flames into the furnace body 1 through the flame head 18. While the external flame-spraying device is heating the furnace body 1, the first motor 7 drives the drive shaft 8 to rotate. The drive shaft 8 drives the connecting plate 9 to rotate, and the connecting plate 9, through its connection with the connecting groove 6, drives the placement plate 5 to rotate. The placement plate 5 then drives the driven shaft 4 to rotate. At this time, the steel strip in the placement groove 10 rotates accordingly. The flames sprayed from the flame head 18 heat the steel strip evenly, achieving the function of uniform heating.
[0026] Through the above steps, the first motor 7 drives the drive shaft 8 to rotate, the drive shaft 8 drives the connecting plate 9 to rotate, and the connecting plate 9 drives the placement plate 5 to rotate through the connection with the connecting groove 6. The placement plate 5 drives the driven shaft 4 to rotate, and the steel strip in the placement groove 10 rotates accordingly. The flame sprayed from the burner head 18 heats the steel strip evenly, which solves the problem of common continuous annealing furnaces used in hot-dip galvanizing production lines. These furnaces only have annealing function and can heat and anneal the steel strip, but they lack the function of uniform heating. They cannot guarantee that the steel strip is heated evenly, which easily leads to uneven heating speed of the steel strip. This causes thermal stress to be generated inside the steel strip. After cooling, these thermal stresses remain inside the steel strip, causing different stress states in different parts. In subsequent use, areas with high strength may bear more load, while areas with low strength may deform or break first, affecting the strength and toughness of the steel strip.
Claims
1. A continuous annealing furnace for hot-dip galvanizing line production, comprising a furnace body (1); characterized in that: It also includes a support plate (2), a slot (3), a driven shaft (4), a shelf (5), a connecting groove (6), a first motor (7), a drive shaft (8), and a connecting plate (9). The support plate (2) is located in the middle of the furnace body (1). A slot (3) is opened at the top center of the support plate (2). The driven shaft (4) is rotatably connected to the bottom of the slot (3). A shelf (5) is located at the top of the driven shaft (4). A connecting groove (6) is opened in the middle of the top of the shelf (5). The first motor (7) is located at the center of the top of the furnace body (1). The output end of the first motor (7) is connected to the drive shaft (8). The drive shaft (8) passes through the furnace body (1) and is connected to the connecting plate (9).
2. The continuous annealing furnace for hot-dip galvanizing line production according to claim 1, characterized in that: The bottom end of the connecting plate (9) is inserted into the interior of the connecting groove (6), and two storage grooves (10) are symmetrically opened on the left and right sides of the top of the storage plate (5) corresponding to the position of the connecting groove (6).
3. The continuous annealing furnace for hot-dip galvanizing line production according to claim 1, characterized in that: A drive plate (11) is provided in the middle of the bottom of the support plate (2), and a second motor (12) is provided at the bottom of the middle of the rear side of the furnace body (1).
4. The continuous annealing furnace for hot-dip galvanizing line production according to claim 3, characterized in that: The output end of the second motor (12) is connected to a lead screw (13), and the front end of the lead screw (13) passes through the furnace body (1) and is threadedly connected to the drive plate (11).
5. A continuous annealing furnace for hot-dip galvanizing line production according to claim 1, characterized in that: A connecting rod (14) is provided in the middle of the front side of the supporting horizontal plate (2), and a sealing door (15) is connected to the front end of the connecting rod (14).
6. The continuous annealing furnace for hot-dip galvanizing line production according to claim 1, characterized in that: Two driven plates (16) are symmetrically arranged on the left and right sides of the bottom of the supporting horizontal plate (2). Two concave slide rails (17) are symmetrically arranged on the left and right sides of the bottom of the furnace body (1) corresponding to the position of the driven plates (16).
7. A continuous annealing furnace for hot-dip galvanizing line production according to claim 6, characterized in that: Insert the bottom end of the moving plate (16) into the concave slide rail (17). Several flame heads (18) are symmetrically arranged at equal intervals on the left and right sides of the furnace body (1) corresponding to the position of the shelf (5).