Bellow assembly and steel belt caster oven

Abstract

This utility model discloses a bellows assembly and a drying oven for a steel strip casting machine. The bellows assembly has several air ducts within its outer frame, and air inlets and nozzles connecting the air ducts are located on the outer frame. Each air duct is independent and not interconnected. Each air duct contains an inner and an outer air distribution plate. The inner air distribution plate is located in the middle of the air duct, dividing it into an inner and outer cavity. The outer air distribution plate is located at the outlet end of the air duct. The inner air distribution plate has several inner air distribution holes, and the outer air distribution plate has several outer air distribution holes. The bellows assembly of this utility model has double-layered air distribution plates in each air duct, which improves the uniformity of air pressure and velocity, enhances airflow stability, helps reduce temperature fluctuations, and improves temperature field uniformity.

Description

Technical Field

[0001] This utility model relates to the field of film production equipment technology, and in particular to a bellows assembly and a steel strip casting machine oven used in film production equipment. Background Technology

[0002] A steel strip casting machine is a device used to prepare thin film materials, widely used in new energy (such as lithium battery separators), electronics (ceramic substrates), photovoltaics, and pharmaceuticals. The working principle of a steel strip casting machine is to uniformly coat the slurry onto the surface of a moving steel strip, and then form a film of uniform thickness through processes such as drying and curing.

[0003] The temperature field of the existing steel strip casting machine oven is uneven, and the air pressure and flow rate of the air box are also uneven. The temperature inside the oven fluctuates greatly. Turbulence will be formed in different temperature zones inside the oven due to the temperature difference, which will affect the drying and curing effect of the hot air on the slurry. Utility Model Content

[0004] In response to the shortcomings of existing steel strip casting machine ovens, the applicant provides a reasonably structured air box assembly and steel strip casting machine oven, which improves the uniformity of air pressure and flow rate in the air box, reduces temperature fluctuations, and improves the uniformity of the temperature field.

[0005] The technical solution adopted in this utility model is as follows: A bellows assembly has several air ducts arranged inside an outer frame. The outer frame has an air inlet connected to the air ducts and several air nozzles. Each air duct is independent and not connected to each other. Each air duct has an inner air distribution plate and an outer air distribution plate. The inner air distribution plate is located in the middle of the air duct and divides the air duct into an inner cavity and an outer cavity. The outer air distribution plate is located at the outlet end of the air duct. Several inner air distribution holes are opened on the inner air distribution plate and several outer air distribution holes are opened on the outer air distribution plate.

[0006] As a further improvement to the above technical solution: Each air duct includes a Y-direction duct and an X-direction duct, which are horizontal and perpendicular to each other. The Y-direction duct and the X-direction duct are connected through an air outlet, the air inlet is connected to the Y-direction duct, and the air nozzle is connected to the X-direction duct.

[0007] The Y-direction ducts of each air duct are arranged sequentially along the X-direction, and the X-direction ducts are arranged sequentially along the Y-direction; the air outlets of each air duct are staggered in both the X and Y directions.

[0008] The closer the internal air distribution plate is to the air outlet in the X direction, the closer it is to the air outlet in the Z direction; the closer the internal air distribution plate is to the air outlet, the smaller the diameter of its internal air distribution holes.

[0009] The internal air distribution plate of the air duct is tilted towards the air nozzle in the positive and / or negative X direction, starting from the air outlet.

[0010] The first inner air distribution plate of the first air duct and the fourth inner air distribution plate of the fourth air duct are inclined plates. The first inner air distribution plate is inclined from left to right toward the air nozzle, and the fourth inner air distribution plate is inclined from right to left toward the air nozzle. The second inner air distribution plate of the second air duct and the third inner air distribution plate of the third air duct are V-shaped. One side of the second inner air distribution plate and the third inner air distribution plate are inclined from right to left toward the air nozzle, and the other side is inclined from left to right toward the air nozzle.

[0011] The external air distribution plates of the air ducts are horizontal straight plates, and the diameter of the external air distribution holes of each external air distribution plate is the same; the external air distribution plates of each air duct are independent plates, or the external air distribution plates of each air duct are made into a whole plate.

[0012] Each air nozzle is horizontally arranged along the Y direction, and several air nozzles are evenly spaced along the X direction; each air nozzle has a triangular cross-section air cavity, with the end of the air cavity near the outer air distribution plate being the air inlet, and the other end of the air cavity being connected to several nozzles; the slope of the air cavity is 15°-70°; on the outer frame, a damper is provided for each air duct; each air duct is separated by a baffle.

[0013] A steel strip casting machine oven, wherein several sets of air box assemblies are arranged on the frame.

[0014] As a further improvement to the above technical solution: Several sets of air box assemblies are installed at the top of the upper insulation layer, the bottom of the middle insulation layer, and the bottom of the lower insulation layer of the oven. Heat insulation and air distribution plates are installed in the drying tunnel of the oven and between the air box assemblies.

[0015] The beneficial effects of this utility model are as follows: The bellows assembly of this invention has a double-layer air distribution plate installed in each air duct, which improves the uniformity of air pressure and flow velocity, enhances the stability of airflow, helps reduce temperature fluctuations, and improves the uniformity of the temperature field.

[0016] In this invention, the diameter of the internal air distribution holes on the inner air distribution plate of the air duct is smaller as it approaches the air outlet, thus ensuring a uniform air pressure gradient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the bellows assembly of this utility model.

[0018] Figure 2 This is a schematic diagram of the thickness structure of the outer frame of the air duct after removing the air box assembly of this utility model.

[0019] Figure 3 for Figure 1 The right view.

[0020] Figure 4 for Figure 3 A sectional view of section AA in the middle.

[0021] Figure 5 for Figure 3 Sectional view of section BB.

[0022] Figure 6 for Figure 3 A sectional view of section CC.

[0023] Figure 7 for Figure 3 A sectional view of section DD.

[0024] Figure 8 for Figure 3 A sectional view of section EE. Figure 9 This is a front view of the oven of this utility model.

[0025] In the picture: 10. Bellows assembly; 1. First air duct; 11. First Y-direction duct; 12. First X-direction duct; 121. First inner duct cavity; 122. First outer duct cavity; 13. First air outlet; 14. First inner air distribution plate; 15. First outer air distribution plate; 2. Second air duct; 21. Second Y-direction duct; 22. Second X-direction duct; 221. Second inner duct cavity; 222. Second outer duct cavity; 23. Second air outlet; 24. Second inner air distribution plate; 25. Second outer air distribution plate; 3. Third air duct; 31. Third Y-direction duct; 32. Third X-direction duct; 321. Third inner duct cavity; 322. Third outer duct cavity; 33. Third air outlet; 34. Third inner air distribution plate; 35. Third outer air distribution plate; 4. Fourth air duct; 41. Fourth Y-direction duct; 42. Fourth X-direction duct; 421. Fourth inner duct cavity; 422. Fourth outer duct cavity; 43. Fourth air outlet; 44. Fourth inner air distribution plate; 45. Fourth outer air distribution plate; 5. Outer frame; 51. Air inlet; 6. Air nozzle; 61. Air cavity; 62. Air inlet; 63. Nozzle; 7. Baffle; 8. Air valve; 100. Drying oven; 101. Machine frame. Detailed Implementation

[0026] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0027] For ease of explanation, the accompanying drawings show an XYZ rectangular coordinate system, where the X-axis represents the horizontal direction (left-right), the Y-axis represents the horizontal direction (front-back), and the Z-axis represents the vertical direction. The X, Y, and Z axes are orthogonal to each other. The naming and setting of the X, Y, and Z axes are for the purpose of fully illustrating the relevant structure and are not intended to be limiting. Slight adjustments to the horizontal and vertical directions also fall within the scope of protection of this invention.

[0028] like Figures 1 to 4 As shown, the outer frame 5 of the bellows assembly 10 of this utility model is divided into several independent and non-connected air ducts by several baffles 7. In this embodiment, four independent and non-connected air ducts are provided: first air duct 1, second air duct 2, third air duct 3, and fourth air duct 4. Four air inlets 51 are provided on the side of the outer frame 5 parallel to the XZ plane, and each air inlet 51 connects to one air duct. Several air nozzles 6 are provided on the side of the outer frame 5 parallel to the XY plane, and the air nozzles 6 connect to the four air ducts. Each air nozzle 6 is horizontally arranged along the Y direction, and the air nozzles 6 are evenly spaced along the X direction. A damper 8 is provided on the outer frame 5 corresponding to each air duct. The air volume and wind speed of each air duct can be adjusted by the damper 8 to ensure the uniformity of the temperature field.

[0029] like Figure 2 , Figures 4 to 8 As shown, each air duct includes a Y-direction duct and an X-direction duct, both of which are horizontal and perpendicular to each other. The Y-direction duct and the X-direction duct are connected through an air outlet, an air inlet 51 is connected to the Y-direction duct, and a nozzle 6 is connected to the X-direction duct. The first Y-direction duct 11 of the first air duct 1, the second Y-direction duct 21 of the second air duct 2, the third Y-direction duct 31 of the third air duct 3, and the fourth Y-direction duct 41 of the fourth air duct 4 are arranged sequentially from left to right along the X-direction and are separated by a baffle 7. The first X-direction duct 12 of the first air duct 1, the second X-direction duct 22 of the second air duct 2, the third X-direction duct 32 of the third air duct 3, and the fourth X-direction duct 42 of the fourth air duct 4 are arranged sequentially from front to back along the Y-direction and are separated by a baffle 7. The first air outlet 13 of the first air duct 1, the second air outlet 23 of the second air duct 2, the third air outlet 33 of the third air duct 3, and the fourth air outlet 43 of the fourth air duct 4 are all staggered in the X and Y directions. The first air outlet 13, the second air outlet 23, the third air outlet 33, and the fourth air outlet 43 are staggered from left to right along the X direction.

[0030] like Figure 2 , Figures 5 to 8As shown, each air duct in the X direction is equipped with two layers of air distribution plates: an inner air distribution plate and an outer air distribution plate. The inner air distribution plate is located in the middle of the X direction duct, dividing the X direction duct into an inner cavity and an outer cavity (the first inner cavity 121 and the first outer cavity 122 of the first X direction duct 12, the second inner cavity 221 and the second outer cavity 222 of the second X direction duct 22, the third inner cavity 321 and the third outer cavity 322 of the third X direction duct 32, and the fourth inner cavity 421 and the fourth outer cavity 422 of the fourth X direction duct 42). Several inner air distribution holes are opened on the inner air distribution plate, connecting the inner cavity and the outer cavity. The outer air distribution plate is located at the outlet end of the X direction duct, and several outer air distribution holes are opened on the outer air distribution plate. The nozzle 6 is connected to the outer air distribution plate. Each air duct is equipped with a double-layer air distribution plate in the X-direction air duct, which improves the uniformity of air pressure and flow velocity, enhances the stability of airflow, helps reduce temperature fluctuations, and improves the uniformity of the temperature field.

[0031] The inner air distribution plates in each air duct are inclined plates, tilting towards the air nozzle 6 in the positive (left to right) / negative (right to left) X direction starting from the air outlet. The closer the inner air distribution plate is to the air outlet in the X direction, the closer it is to the air outlet in the Z direction. The smaller the diameter of the inner air distribution holes is at the part of the inner air distribution plate closer to the air outlet, ensuring a uniform air pressure gradient. The first inner air distribution plate 14 of the first air duct 1 and the fourth inner air distribution plate 44 of the fourth air duct 4 are inclined plates. The first inner air distribution plate 14 tilts towards the air nozzle 6 from left to right, and the fourth inner air distribution plate 44 tilts towards the air nozzle 6 from right to left. The second inner air distribution plate 24 of the second air duct 2 and the third inner air distribution plate 34 of the third air duct 3 are V-shaped. One side of the second inner air distribution plate 24 and the third inner air distribution plate 34 tilts towards the air nozzle 6 from right to left, and the other side tilts towards the air nozzle 6 from left to right.

[0032] Each air duct's external air distribution plate is a horizontal straight plate, and the diameter of the external air distribution holes on each external air distribution plate is the same. The first external air distribution plate 15 of the first air duct 1, the second external air distribution plate 25 of the second air duct 2, the third external air distribution plate 35 of the third air duct 3, and the fourth external air distribution plate 45 of the fourth air duct 4 can be made into independent plates or into a single integral plate.

[0033] like Figures 5 to 8 As shown, each air nozzle 6 has a triangular cross-section air cavity 61. The end of the air cavity 61 closest to the outer air distribution plate is the air inlet 62, and the other end of the air cavity 61 is connected to several nozzles 63. The slope of the air cavity 61 is 15°-70° to reduce wind resistance and improve stability, ensure the stability of air inlet and outlet, reduce turbulence, reduce temperature fluctuations, and improve the drying and curing effect.

[0034] like Figure 9As shown, the bellows assembly 10 of this utility model is applicable to the oven 100 of a steel strip casting machine. Several sets of bellows assemblies 10 are arranged on the frame 101 of the oven 100. Several sets of bellows assemblies 10 are respectively arranged at the top of the upper insulation layer, the bottom of the middle insulation layer, and the bottom of the lower insulation layer of the oven 100, forming several temperature fields. Heat-insulating and air-distributing plates are arranged inside the drying tunnel of the oven 100 between the bellows assemblies 10 to isolate hot air from different temperature fields, preventing the mixing of hot air from different temperature fields from forming turbulence and reducing the accuracy of temperature control, thus improving the uniformity of the temperature field.

[0035] The above description is an explanation of the present utility model and not a limitation thereof. The present utility model can be modified in any form without departing from its spirit.

Claims

1. A bellows assembly, wherein a plurality of air ducts are provided inside an outer frame (5), and an air inlet (51) connected to the air ducts and a plurality of air nozzles (6) are provided on the outer frame (5), characterized in that: Each air duct is independent and not connected to the others. Each air duct is equipped with an inner air distribution plate and an outer air distribution plate. The inner air distribution plate is located in the middle of the air duct, dividing the air duct into an inner cavity and an outer cavity. The outer air distribution plate is located at the outlet end of the air duct. Several inner air distribution holes are opened on the inner air distribution plate, and several outer air distribution holes are opened on the outer air distribution plate.

2. The bellow assembly of claim 1, wherein: Each air duct includes a Y-direction duct and an X-direction duct. The Y-direction duct and the X-direction duct are horizontal ducts and are perpendicular to each other. The Y-direction duct and the X-direction duct are connected through an air outlet. The air inlet (51) is connected to the Y-direction duct, and the air nozzle (6) is connected to the X-direction duct.

3. The bellows assembly of claim 2, wherein: The Y-direction ducts of each air duct are arranged sequentially along the X-direction, and the X-direction ducts are arranged sequentially along the Y-direction; the air outlets of each air duct are staggered in both the X and Y directions.

4. A bellow assembly according to claim 1 or 2, characterized in that: The closer the internal air distribution plate is to the air outlet in the X direction, the closer it is to the air outlet in the Z direction; the closer the internal air distribution plate is to the air outlet, the smaller the diameter of its internal air distribution holes.

5. The bellows assembly of claim 1 or 2, wherein: The inner air distribution plate of the air duct is inclined from the air outlet towards the air nozzle (6) in the positive and / or negative X direction.

6. The bellows assembly of claim 4, wherein: The first inner air distribution plate (14) of the first air duct (1) and the fourth inner air distribution plate (44) of the fourth air duct (4) are inclined plates. The first inner air distribution plate (14) is inclined from left to right toward the air nozzle (6), and the fourth inner air distribution plate (44) is inclined from right to left toward the air nozzle (6). The second inner air distribution plate (24) of the second air duct (2) and the third inner air distribution plate (34) of the third air duct (3) are V-shaped. One side of the second inner air distribution plate (24) and the third inner air distribution plate (34) are inclined from right to left toward the air nozzle (6), and the other side is inclined from left to right toward the air nozzle (6).

7. The bellows assembly of claim 1, wherein: The external air distribution plates of the air ducts are horizontal straight plates, and the diameter of the external air distribution holes of each external air distribution plate is the same; the external air distribution plates of each air duct are independent plates, or the external air distribution plates of each air duct are made into a whole plate.

8. The bellow assembly of claim 1, wherein: Each nozzle (6) is horizontally arranged along the Y direction, and several nozzles (6) are evenly spaced along the X direction; each nozzle (6) is provided with a triangular cross-section air cavity (61), the end of the air cavity (61) near the outer air distribution plate is the air inlet end (62), and the other end of the air cavity (61) is connected to several nozzles (63). The slope of the air cavity (61) is 15°-70°; on the outer frame (5), a wind valve (8) is provided for each air duct; each air duct is separated by a baffle (7).

9. A steel belt caster oven characterized by: The frame (101) is provided with several sets of bellows assemblies (10) as described in claim 1.

10. The steel belt caster oven of claim 9, wherein: Several sets of air box assemblies (10) are respectively installed at the top of the upper insulation layer, the bottom of the middle insulation layer and the bottom of the lower insulation layer of the oven (100). Heat insulation and air distribution plates are installed in the drying channel of the oven (100) and between the air box assemblies (10).

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