Energy-saving and environment-friendly aluminum strip heating furnace

Abstract

The invention discloses an energy-saving and environment-friendly aluminum strip heating furnace, which relates to the technical field of aluminum processing and comprises a furnace body with a furnace door, a plurality of natural gas burners symmetrically arranged at the top of the furnace body and a circulating fan for supplying gas to the burners, and a driving roller frame arranged at the bottom of the furnace body and used for driving an aluminum strip. An upper air pipe and a lower air pipe which are adjustable in height are arranged at the upper end and the lower end of the transmission roller frame respectively and are communicated, an air inlet of the upper air pipe corresponds to the bottom of the burner, an air inlet adjusting mechanism is arranged in the air inlet of the upper air pipe, and the upper air pipe and the lower air pipe are arranged on a moving mechanism. According to the aluminum strip heating device, by arranging the height-adjustable upper air pipe and the height-adjustable lower air pipe, the distance between the upper air pipe and the aluminum strip and the distance between the lower air pipe and the aluminum strip can be adjusted, so that the height with the optimal heating effect on the aluminum strip can be found, meanwhile, comprehensive heating of the aluminum strip can be achieved, and the deformation amount of the aluminum strip is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum processing, and more specifically to an energy-saving and environment-friendly aluminum strip heating furnace. Background Art

[0002] Aluminum sheet is a type of aluminum material. It refers to the use of plastic processing methods to make aluminum ingots into plate-shaped aluminum products through rolling, extrusion, stretching and forging. In order to ensure the final performance of the sheet, the finished product is annealed, solution treated, quenched, naturally aged and artificially aged. When heating multiple sheets with a planar structure, they need to be overlapped and placed in the heating furnace, resulting in uneven heating on the surface of each sheet, affecting the quality of its heat treatment.

[0003] In order to solve the above problems, a Chinese utility model patent with application number CN202121891860.0 discloses a front-to-back through-stick aluminum plate heating furnace, which includes a furnace shell, a furnace lining, a hot air circulation system, a combustion and control system, a furnace door and a lifting mechanism, a stick conveying mechanism, a smoke exhaust mechanism and an electrical control system in sequence, and the stick conveying mechanism is provided with an auxiliary conveying structure to prevent the aluminum plate from being stuck. Although the heating furnace heats the aluminum plate during continuous conveying, the heating furnace adopts single-duct heating, and the heating of the aluminum plate is uneven, which will cause serious deformation of the aluminum plate.

[0004] Therefore, it is necessary to propose an energy-saving and environmentally friendly aluminum strip heating furnace to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that a heating furnace adopts a single air duct for heating, the heating of the aluminum plate is uneven, and the aluminum plate may be severely deformed.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: An energy-saving and environmentally friendly aluminum strip heating furnace comprises a furnace body provided with a furnace door, a plurality of natural gas burners and a circulating fan for supplying air to the burners are symmetrically arranged on the top of the furnace body, a transmission roller frame for transmitting the aluminum strip is arranged at the bottom of the furnace body, and a height-adjustable upper air duct and a lower air duct are respectively arranged at the upper and lower ends of the transmission roller frame, the upper air duct and the lower air duct are connected, an air inlet of the upper air duct corresponds to the bottom of the burner, and an air inlet volume adjustment mechanism is arranged in the air inlet of the upper air duct, and the upper air duct and the lower air duct are both arranged on a moving mechanism.

[0007] Furthermore, the moving mechanism includes a base frame, an axle body connected to the base frame in a laterally symmetrical rotation, a mounting rod fixedly connected to both ends of the axle body, and a roller rotatably connected to the end of the mounting rod away from the axle body, the two ends of the axle body pass through both sides of the base frame, a driving mechanism for driving the axle body to rotate is provided in the middle of the axle body, and a support rod is fixedly connected to the side of the mounting rod.

[0008] Furthermore, the driving mechanism includes a transmission block, a nut block and a bidirectional threaded rod, the end of the transmission block is fixedly connected to the middle part of the shaft body, a through hole is penetrated in the middle part of the transmission block, second slide grooves connected to the through hole are penetrated on both sides of the transmission block, a round rod is slidably arranged in the second slide groove, one end of the round rod facing the through hole is fixedly connected with the nut block, the side surfaces of the nut block fit the two sides of the through hole, the bidirectional threaded rod is rotatably connected to the upper end of the base frame, and the nut block is threadedly connected to the outer surface of the bidirectional threaded rod.

[0009] Furthermore, an L-shaped shell is fixedly connected to the upper end of the base frame, the down air duct is slidably arranged at the lower end of the shell, the up air duct is slidably arranged at the upper end of the shell, the down air duct and the up air duct are connected through a middle tube, and the down air duct and the up air duct can be driven separately to slide along the middle tube.

[0010] Furthermore, the upper air duct includes a ventilation pipe and a first blowing pipe for blowing air downward, the upper end of the ventilation pipe corresponds to the lower end of the burner, the lower end of the ventilation pipe is slidably connected to the outer side of the upper end of the middle pipe, the first blowing pipe is fixedly connected to the middle of the ventilation pipe, and the ventilation pipe and the first blowing pipe are connected, the lower air duct includes an air inlet pipe and a second blowing pipe for blowing air upward, the upper end of the air inlet pipe is slidably connected to the outer side of the lower end of the middle pipe, and the second blowing pipe is fixedly connected to the lower end of the air inlet pipe.

[0011] Furthermore, a fixing plate is symmetrically fixedly connected to the middle part of the middle tube, and one end of the fixing plate away from the middle tube is fixedly connected to the inner side of the shell, and the upper air duct and the lower air duct are fixedly connected to a transmission plate on the side facing the fixing plate, and a first screw is rotatably connected to the fixing plate, and the middle part of the transmission plate is threadedly connected to the outer side of the first screw, and one end of the two first screws close to the fixing plate is fixedly connected to a turning handle, and the turning handles are fitted, and a first cavity is opened on the shell corresponding to the position of the turning handle.

[0012] Furthermore, a U-shaped plate is fixedly connected to the lower end of the downwind duct, a sliding space is formed between the U-shaped plate and the bottom of the downwind duct, an inverted first U-shaped rod is slidably connected in the sliding middle, the end of the U-shaped rod is rotatably connected to a support plate, the lower end of the support plate is rotatably connected to a base, the base is fixed to the upper end of the base frame, and a circular hole for installing a bidirectional threaded rod is opened in the middle of the base.

[0013] Furthermore, a plug-in rod is inserted into the side of the upper air duct facing the transmission plate, and one end of the plug-in rod is inserted into the upper air duct and fixedly connected to a partition with an L-shaped cross-section, the horizontal plate of the partition is used to guide the wind into the upper air duct, and the vertical plate of the partition is used to divide the air volume entering the upper air duct and the lower air duct.

[0014] Furthermore, the end of the plug-in rod located outside the upper air duct is rotatably connected to a transmission rod, and the end of the transmission rod away from the plug-in rod is rotatably connected to a slider. A first sliding groove is opened on the side of the upper air duct facing the transmission plate, and the slider is slidably connected in the first sliding groove. A tightening bolt is threadedly connected to the middle part of the slider, and the tightening bolt passes through the slider. The cross-sections of the slider and the first sliding groove are both convex.

[0015] Furthermore, an indicator rod is fixedly connected to one end of the transmission plate away from the upper air duct, and second cavities are symmetrically opened on the shell at the upper and lower ends of the first cavity, and two sides of the transmission plate are in contact with two sides of the second cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can adjust the distance between the upper and lower air ducts and the aluminum strip by arranging height-adjustable upper and lower air ducts, so as to find the height with the best heating effect on the aluminum strip, and at the same time, can realize comprehensive heating of the aluminum strip and reduce the deformation of the aluminum strip.

[0017] 2. The present invention can achieve the movement of the chassis and the stability when it is not moving through the coordinated arrangement of the driving mechanism, the shaft, the mounting rod, the support rod and the roller.

[0018] 3. The present invention can adjust the air entering the upper air duct and the lower air duct through the coordinated arrangement of the partition, the slider, the tightening bolt, the transmission rod and the plug-in rod, thereby achieving different degrees of heating of the upper and lower surfaces of the aluminum strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the present invention; Figure 2 It is a three-dimensional front view schematic diagram of the present invention; Figure 3 It is a three-dimensional schematic diagram of the connection structure between the upper air duct and the lower air duct in the present invention; Figure 4 It is a three-dimensional cross-sectional schematic diagram of the connection structure of the upper air duct and the lower air duct in the present invention; Figure 5 It is a three-dimensional schematic diagram of the connection structure of the upper air duct and the lower air duct of the structure other than the shell in the present invention; Figure 6 For the present invention Figure 4 The enlarged schematic diagram at A in the middle; Figure 7 It is a three-dimensional schematic diagram of the mounting rod, the support rod and the roller in the present invention.

[0020] 1. The furnace body; 2. The circulating fan; 3. The burner; 4. The base frame; 5. The shell; 6. The first cavity; 7. The handle; 8. The middle tube; 9. The transmission plate; 10. The indicator rod; 11. The second cavity; 12. The first screw; 13. The fixing plate; 14. The upper air duct; 15. The lower air duct; 16. The partition; 17. The first slide groove; 18. The slider; 19. The tightening bolt; 20. The transmission rod; 21. The plug-in rod; 22. The shaft; 23. The mounting rod; 24. The support rod; 25. The roller; 26. The transmission block; 27. The through hole; 28. The second slide groove; 29. ​​The nut block; 30. The round rod; 31. The two-way threaded rod; 32. The base; 33. The support plate; 34. The U-shaped plate; 35. The furnace door; 36. The transmission roller frame. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 7 An energy-saving and environmentally friendly aluminum strip heating furnace comprises a furnace body 1 provided with a furnace door 35, wherein when in use, multiple furnace bodies 1 are often connected to form a whole heating and quenching line, and the furnace door 35 can be opened as a whole, which is convenient for the maintenance of the parts in the furnace body 1, and multiple natural gas burners 3 and circulating fans 2 for supplying gas to the burners 3 are symmetrically arranged on the top of the furnace body 1, and the burners 3 and the circulating fans 2 cooperate to provide the required heat for the heating furnace as a whole, and a driving roller frame 36 for driving the aluminum strip is arranged at the bottom of the furnace body 1, and the upper and lower ends of the driving roller frame 36 are respectively provided with height-adjustable upper air ducts 1 4 and the down air duct 15, so as to find a more accurate positioning to achieve the optimal heating position of the aluminum strip, the upper air duct 14 and the down air duct 15 are connected, the air inlet of the upper air duct 14 corresponds to the bottom of the burner 3, and the air inlet of the upper air duct 14 is provided with an air inlet amount regulating mechanism, so that the hot air enters through the upper end of the upper air duct 14, and then is diverted to the first blowing port of the upper air duct 14 and the blowing port of the down air duct 15. The upper air duct 14 and the down air duct 15 are both arranged on a moving mechanism, which is convenient for adjusting their positions, so as to cooperate in achieving the search for the optimal heating position of the aluminum strip.

[0023] Specific, combined Figures 3 to 5As shown in the figure, the moving mechanism includes a chassis 4 with an overall rectangular shape, a shaft body 22 symmetrically and rotatably connected to the chassis 4 in the transverse direction, mounting rods 23 fixedly connected to both ends of the shaft body 22, and rollers 25 rotatably connected to the ends of the mounting rods 23 far from the shaft body 22. The shaft body 22 is provided with at least two groups to facilitate the stable support of the chassis 4. The axis of the roller 25 is offset from the axis of the shaft body 22. Both ends of the shaft body 22 penetrate through both sides of the chassis 4. A driving mechanism for driving the rotation of the shaft body 22 is provided in the middle of the shaft body 22. A support rod 24 is fixedly connected to the side of the mounting rod 23. The support rod 24 is arranged such that when the roller 25 is in contact with the bottom of the furnace body 1 or the ground, the support rod 24 does not touch the ground, preventing interference in the movement of the support rod 24 when the entire chassis 4 is moved. When the support rod 24 is in contact with the bottom of the furnace body 1 or the ground and the roller 25 is not in contact with the bottom of the furnace body 1 or the ground, it prevents the movement of the roller 25 when the support rod 24 is supported. When the shaft body 22 rotates, the mounting rod 23 drives the roller 25 to be in contact with or away from the bottom of the furnace body 1, and then the support rod 24 is in contact with the bottom of the furnace body 1, realizing the support of the chassis 4.

[0024] Specifically, in combination with Figures 3 to 5 As shown in the figure, the driving mechanism includes a transmission block 26, a nut block 29, and a bidirectional threaded rod 31. The nut block 29 is overall square. The end of the transmission block 26 is fixedly connected to the middle of the shaft body 22, and the position of the transmission block 26 is always above the shaft body 22. A through hole 27 is formed through the middle of the transmission block 26. The size of the through hole 27 is much larger than the size of the nut block 29, as long as it does not interfere with the movement of the nut block 29 in the through hole 27. Second sliding grooves 28 communicating with the through hole 27 are formed through both sides of the transmission block 26. The cross-sections of the second sliding grooves 28 and the through hole 27 are overall in the shape of a Chinese character 'zhong'. A round rod 30 is slidably arranged in the second sliding grooves 28. One end of the round rod 30 facing the through hole 27 is fixedly connected to the nut block 29. The cross-sections of the round rod 30 and the nut block 29 are also in the shape of a Chinese character 'zhong'. The sides of the nut block 29 are in contact with both sides of the through hole 27. The bidirectional threaded rod 31 is rotatably connected to the upper end of the chassis 4, and the nut block 29 is threadedly connected to the outer side of the bidirectional threaded rod 31. The middle of the bidirectional threaded rod 31 is a smooth shaft, and the two ends are threaded grooves with opposite thread directions. When the bidirectional threaded rod 31 drives the nut block 29 to move, the position of the nut block 29 will change in the through hole 27, so as to drive the transmission block 26 to rotate around the axis of the shaft body 22 through the cooperation of the round rod 30 and the second sliding grooves 28, and then drive the shaft body 22 to rotate.

[0025] Specifically, in combination with Figures 1 to 4As shown, an L-shaped shell 5 is fixedly connected to the upper end of the base frame 4, and the shell 5 wraps the upper air duct 14 and the lower air duct 15 as a whole, wherein a certain space is reserved in the shell 5 without affecting the respective sliding of the upper air duct 14 and the lower air duct 15, the lower air duct 15 is slidably arranged at the lower end of the shell 5, and the upper air duct 14 is slidably arranged at the upper end of the shell 5, the lower air duct 15 and the upper air duct 14 are connected through the middle tube 8, and the lower air duct 15 and the upper air duct 14 can be driven separately to slide along the middle tube 8.

[0026] Specific, combined Figure 5 As shown, the upper air duct 14 includes a ventilation pipe and a first blowing pipe for blowing air downward, the upper end of the ventilation pipe corresponds to the lower end of the burner 3, the lower end of the ventilation pipe is slidably connected to the outer side of the upper end of the middle pipe 8, the first blowing pipe is fixedly connected to the middle of the ventilation pipe, and the ventilation pipe and the first blowing pipe are connected, the lower air duct 15 includes an air inlet pipe and a second blowing pipe for blowing air upward, the upper end of the air inlet pipe is slidably connected to the outer side of the lower end of the middle pipe 8, the second blowing pipe is fixedly connected to the lower end of the air inlet pipe, and multiple air ducts are arranged in the first blowing pipe and the second blowing pipe.

[0027] Specific, combined Figures 3 to 5 As shown, a fixing plate 13 is symmetrically fixedly connected to the middle part of the middle tube 8, and one end of the fixing plate 13 away from the middle tube 8 is fixedly connected to the inner side of the shell 5 to fix the position of the middle tube 8. The upper air duct 14 and the lower air duct 15 are fixedly connected to the side facing the fixing plate 13 with a transmission plate 9, and a first screw 12 is rotatably connected to the fixing plate 13. The middle part of the transmission plate 9 is threadedly connected to the outer surface of the first screw 12. By rotating the corresponding first screw 12, the position of the upper air duct 14 or the lower air duct 15 can be adjusted. The ends of the two first screws 12 close to the fixing plate 13 are fixedly connected to the handle 7, and the handles 7 are fitted together. Through this arrangement, the two first screws 12 can also be controlled simultaneously. A first cavity 6 is opened on the shell 5 corresponding to the position of the handle 7. The staff can hold the two handles 7 through the first cavity 6 and rotate them simultaneously, so as to realize the simultaneous control of the two first screws 12.

[0028] Specifically, the lower end of the downwind duct 15 is fixedly connected with a U-shaped plate 34, and a sliding space is formed between the U-shaped plate 34 and the bottom of the downwind duct 15. An inverted first U-shaped rod is slidably connected in the sliding middle. The end of the U-shaped rod is rotatably connected with a support plate 33. The lower end of the support plate 33 is rotatably connected with a base 32. The base 32 is fixed to the upper end of the base frame 4, and a circular hole for installing a bidirectional threaded rod 31 is opened in the middle of the base 32. That is, as the downwind duct 15 moves upward, the first U-shaped rod will slide toward one side of the base 32 in the sliding middle. When the downwind duct 15 moves into place, the support plate 33 will support the downwind duct 15, and at the same time cooperate with the shell 5 to support the downwind duct 15, so as to further prevent the downwind duct 15 from falling and causing the middle tube 8 to deform.

[0029] Specific, combined Figures 4 to 6 As shown, a plug-in rod 21 is inserted into the side of the upper air duct 14 facing the transmission plate 9, and one end of the plug-in rod 21 inserted into the upper air duct 14 is fixedly connected to a partition 16 with an L-shaped cross-section. The horizontal plate of the partition 16 is used to guide the wind in the burner 3 into the upper air duct 14, and the vertical plate of the partition 16 is used to divide the air volume entering the upper air duct 14 and the lower air duct 15, so as to achieve different degrees of heating of the upper surface and the lower surface of the aluminum strip.

[0030] Specific, combined Figure 6 As shown, one end of the plug rod 21 located outside the upper air duct 14 is rotatably connected to the transmission rod 20. As the plug rod 21 moves, the angle between the plug rod 21 and the transmission rod 20 will change, and the end of the transmission rod 20 away from the plug rod 21 is rotatably connected to the slider 18. The angle change of the transmission rod 20 will drive the slider 18 to move up and down. In order to ensure the movement trajectory of the slider 18, a first slide groove 17 is opened on the side of the upper air duct 14 facing the transmission plate 9, and the slider 18 is slidably installed in the first slide groove 17. The cross-sections of the slider 18 and the first slide groove 17 are both convex. At the same time, in order to fix the position of the partition 16, a tightening bolt 19 is threadedly connected to the middle part of the slider 18, and the tightening bolt 19 runs through the slider 18. By locking the position of the slider 18, the angle between the transmission rod 20 and the plug rod 21 is locked, thereby locking the position of the partition 16.

[0031] Specific, combined Figure 3 As shown, an indicator rod 10 is fixedly connected to one end of the transmission plate 9 away from the upper air duct 14, and a second cavity 11 is symmetrically opened on the shell 5 at the upper and lower ends of the first cavity 6. The two sides of the transmission plate 9 fit the two sides of the second cavity 11, and the moving positions of the upper air duct 14 and the lower air duct 15 can be clearly seen, which is convenient for recording their positions.

[0032] First, the housing 5 is pushed to drive the roller 25 to rotate, thereby driving the bottom frame 4 to move, adjusting the positions of the upper air duct 14 and the lower air duct 15. After moving to the position, the nut block 29 is driven to move toward each other by rotating the bidirectional threaded rod 31. The nut block 29 will drive the round rod 30 to slide in the second slide groove 28, thereby causing the round rod 30 to drive the transmission block 26 to rotate, causing the transmission block 26 to drive the shaft body 22 to rotate, thereby causing the shaft body 22 to drive the transmission block 26 to rotate, causing the roller 25 to leave the bottom surface of the furnace body 1, causing the support rod 24 to begin to contact the bottom surface of the furnace body 1, thereby supporting the bottom frame 4 and preventing the bottom frame 4 from moving; When adjusting the position of the upper air duct 14 and the lower air duct 15, the furnace door 35 is first opened, and then the operator rotates the corresponding handle 7 to drive the first screw 12 to rotate, and then drives the transmission plate 9 to move, so as to adjust the height of the upper air duct 14 and the lower air duct 15, and adjust the distance between the air outlet of the upper air duct 14 and the lower air duct 15 and the aluminum strip, so as to find the height with the best heating effect; When adjusting the position of the partition 16, first loosen the tightening bolt 19, and then push or pull the plug rod 21 so that the plug rod 21 drives the partition 16 to move and adjust the air volume entering the upper air duct 14 and the middle tube 8. After the adjustment is completed, turn the tightening bolt 19 to tighten it in the first slide groove 17 to complete the fixation of the slider 18.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. An energy-saving and environmentally friendly aluminum strip heating furnace, comprising a furnace body provided with a furnace door, characterized in that: A plurality of natural gas burners and a circulating fan for supplying air to the burners are symmetrically arranged on the top of the furnace body, a transmission roller frame for transmitting the aluminum strip is arranged at the bottom of the furnace body, and a height-adjustable upper air duct and a lower air duct are respectively arranged at the upper and lower ends of the transmission roller frame, the upper air duct and the lower air duct are connected, the air inlet of the upper air duct corresponds to the bottom of the burner, and an air inlet volume adjustment mechanism is arranged in the air inlet of the upper air duct, and the upper air duct and the lower air duct are both arranged on a moving mechanism.

2. The energy-saving and environmentally friendly aluminum strip heating furnace according to claim 1 is characterized in that: The moving mechanism includes a base frame, an axle body connected to the base frame for laterally symmetrical rotation, mounting rods fixedly connected to both ends of the axle body, and a roller rotatably connected to an end of the mounting rod away from the axle body. The two ends of the axle body pass through both sides of the base frame, a driving mechanism for driving the axle body to rotate is arranged in the middle of the axle body, and a support rod is fixedly connected to the side of the mounting rod.

3. The energy-saving and environmentally friendly aluminum strip heating furnace according to claim 2 is characterized in that: The driving mechanism includes a transmission block, a nut block and a bidirectional threaded rod, the end of the transmission block is fixedly connected to the middle part of the shaft body, a through hole is penetrated in the middle part of the transmission block, second slide grooves connected to the through hole are penetrated on both sides of the transmission block, a round rod is slidably arranged in the second slide groove, one end of the round rod facing the through hole is fixedly connected with the nut block, the side surfaces of the nut block fit the two sides of the through hole, the bidirectional threaded rod is rotatably connected to the upper end of the base frame, and the nut block is threadedly connected to the outer surface of the bidirectional threaded rod.

4. The energy-saving and environmentally friendly aluminum strip heating furnace according to claim 3 is characterized in that: An L-shaped shell is fixedly connected to the upper end of the base frame, the lower air duct is slidably arranged at the lower end of the shell, and the upper air duct is slidably arranged at the upper end of the shell. The lower air duct and the upper air duct are connected through a middle tube, and the lower air duct and the upper air duct can be driven separately to slide along the middle tube.

5. The energy-saving and environmentally friendly aluminum strip heating furnace according to claim 4 is characterized in that: The upper air duct includes a ventilation pipe and a first blowing pipe for blowing air downward, the upper end of the ventilation pipe corresponds to the lower end of the burner, the lower end of the ventilation pipe is slidably connected to the outer side of the upper end of the middle pipe, the first blowing pipe is fixedly connected to the middle of the ventilation pipe, and the ventilation pipe and the first blowing pipe are connected, the lower air duct includes an air inlet pipe and a second blowing pipe for blowing air upward, the upper end of the air inlet pipe is slidably connected to the outer side of the lower end of the middle pipe, and the second blowing pipe is fixedly connected to the lower end of the air inlet pipe.

6. The energy-saving and environmentally friendly aluminum strip heating furnace according to claim 5 is characterized in that: A fixing plate is symmetrically fixedly connected to the middle part of the middle tube, and one end of the fixing plate away from the middle tube is fixedly connected to the inner side of the shell, and a transmission plate is fixedly connected to the side of the upper air duct and the lower air duct facing the fixing plate, and a first screw is rotatably connected to the fixing plate, and the middle part of the transmission plate is threadedly connected to the outer side of the first screw, and one end of the two first screws close to the fixing plate is fixedly connected to a turning handle, and the turning handles are fitted, and a first cavity is opened on the shell corresponding to the position of the turning handle.

7. The energy-saving and environmentally friendly aluminum strip heating furnace according to claim 6 is characterized in that: The lower end of the downwind duct is fixedly connected with a U-shaped plate, and a sliding space is formed between the U-shaped plate and the bottom of the downwind duct. An inverted first U-shaped rod is slidably connected in the sliding middle. The end of the U-shaped rod is rotatably connected with a support plate, and the lower end of the support plate is rotatably connected with a base. The base is fixed to the upper end of the base frame, and a circular hole for installing a bidirectional threaded rod is opened in the middle of the base.

8. The energy-saving and environmentally friendly aluminum strip heating furnace according to claim 7 is characterized in that: A plug-in rod is inserted into the side of the upper air duct facing the transmission plate, and one end of the plug-in rod inserted into the upper air duct is fixedly connected to a partition with an L-shaped cross-section. The horizontal plate of the partition is used to guide the wind into the upper air duct, and the vertical plate of the partition is used to divide the air volume entering the upper air duct and the lower air duct.

9. The energy-saving and environmentally friendly aluminum strip heating furnace according to claim 8, characterized in that: The end of the plug-in rod located outside the upper air duct is rotatably connected to a transmission rod, and the end of the transmission rod away from the plug-in rod is rotatably connected to a slider. A first sliding groove is opened on the side of the upper air duct facing the transmission plate, and the slider is slidably connected in the first sliding groove. A tightening bolt is threadedly connected to the middle part of the slider, and the tightening bolt passes through the slider. The cross-sections of the slider and the first sliding groove are both convex.

10. The energy-saving and environmentally friendly aluminum strip heating furnace according to claim 9, characterized in that: An end of the transmission plate away from the upper air duct is fixedly connected with an indicating rod, and a second cavity is symmetrically opened on the shell at the upper and lower ends of the first cavity, and two sides of the transmission plate are attached to two sides of the second cavity.

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