Heating furnace for high-strength aluminum bar

Abstract

The utility model discloses a heating furnace for a high-strength aluminum bar, and relates to the technical field of heating furnaces. Comprising a heating outer box, an upper partition plate, a lower partition plate and a rotating mechanism are arranged on the inner side of the heating outer box, an air blower and a feeding valve are arranged outside the heating outer box, a fuel supply cavity is formed between the lower partition plate and the lower side wall of the heating outer box, and an oxygen supply cavity is formed between the lower partition plate and the upper partition plate; a waste heat recovery mechanism is arranged between the output end of the air blower and the tail gas pipe, and the output end of the feeding valve communicates with the fuel supply cavity through a feeding pipe. A combustion pipe in the device combusts fuel to heat an aluminum bar, and generated tail gas enters a waste heat recovery mechanism through a tail gas pipe to be subjected to heat recovery; meanwhile, rotation of the aluminum bar in the heating process is achieved through the rotating mechanism, so that rotation operation of the aluminum bar is achieved, it is guaranteed that the aluminum bar is evenly heated, and then subsequent product machining is prevented from being affected.

Description

Technical Field

[0001] This utility model relates to the field of heating furnace technology, and in particular to a heating furnace for high-strength aluminum rods. Background Technology

[0002] In the aluminum processing industry, heating high-strength aluminum bars is a crucial step. Its main purpose is to optimize subsequent shaping, extrusion, or forging processes by raising the temperature of the aluminum bars, ensuring that the material achieves ideal mechanical and processing properties. Existing aluminum bar heating furnaces, as core equipment, undertake this critical task. They generate a high-temperature environment by burning fuel to heat the aluminum bars placed inside the furnace.

[0003] However, traditional aluminum rod heating devices have several shortcomings in use: on the one hand, the exhaust gas generated during the combustion process often carries a large amount of unused heat and is directly discharged into the atmosphere, resulting in serious energy waste; on the other hand, most existing heating furnaces only use single-sided heating, which leads to uneven heating of aluminum rods, affecting heating efficiency and the stability of aluminum rod quality, and thus restricting the overall efficiency and product quality of aluminum processing.

[0004] Therefore, this application proposes a heating furnace for high-strength aluminum bars to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a heating furnace for high-strength aluminum bars, which solves the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heating furnace for high-strength aluminum rods, comprising a heating outer casing, a sealing door on the front side of the heating outer casing, an upper partition, a lower partition, and a rotating mechanism on the inner side of the heating outer casing, the outer ends of the upper and lower partitions being fixedly connected to the inner wall of the heating outer casing, a fuel supply chamber being formed between the lower partition and the lower wall of the heating outer casing, and an oxygen supply chamber being formed between the lower and upper partitions, the upper partition having several oxygen supply holes, and several combustion tubes being fixedly connected to the upper end of the lower partition, the lower ends of the combustion tubes being connected to the fuel supply chamber. The combustion tube extends through the upper partition and above it. A tailpipe is fixedly connected to the upper end of the heating outer casing. A blower and a feed valve are fixedly connected to the outer wall of the heating outer casing. A waste heat recovery mechanism is provided between the blower and the tailpipe. An air inlet pipe is fixedly connected to the output end of the blower. The end of the air inlet pipe away from the blower extends through the side wall of the heating outer casing and communicates with the oxygen supply chamber. A feed pipe is connected to the output end of the feed valve. The end of the feed pipe away from the feed valve extends through the side wall of the heating outer casing and communicates with the fuel supply chamber. A gas storage device is externally connected to the input end of the feed valve.

[0007] Preferably, the waste heat recovery mechanism includes a preheating box, an exhaust pipe fixedly connected to the upper end of the preheating box, and a connecting pipe fixedly connected to the lower end of the preheating box. The lower end of the connecting pipe is connected to the input end of a blower. The exhaust pipe is connected to the connecting pipe through the preheating box. Two connecting plates are provided on the inner side of the preheating box. The outer ends of the two connecting plates are fixedly connected to the inner side wall of the preheating box. A plurality of heat exchange pipes are provided between the two connecting plates. The upper and lower ends of the heat exchange pipes pass through the upper and lower connecting plates respectively and are connected to the space on the opposite side of the two connecting plates.

[0008] Preferably, the preheating box is connected to the end of the exhaust pipe away from the heating outer box on the side wall near the heating outer box, and an exhaust pipe is fixedly connected to the side wall of the preheating box away from the exhaust pipe. The exhaust pipe and the exhaust pipe are connected through the space between two connecting plates, and an exhaust gas treatment module is externally connected to the end of the exhaust pipe away from the preheating box.

[0009] Preferably, the rotating mechanism includes a sliding plate, the left and right ends of which are slidably connected to the inner walls of the left and right sides of the heating outer box through limiting grooves. A plurality of limiting tubes are provided on the front side of the sliding plate, and a rotating rod is fixedly connected to the rear end of the limiting tube. The rear end of the rotating rod passes through the sliding plate and extends to the rear side of the sliding plate. A transmission gear is fixedly connected to the rotating rod, and adjacent transmission gears mesh with each other.

[0010] Preferably, a drive rod is fixedly connected to the rear end of one of the rotating rods. The rear end of the drive rod penetrates the rear side wall of the heating outer box and extends to the rear side of the heating outer box. A driven gear is slidably connected to the drive rod through a limiting groove. The front end of the driven gear is rotatably connected to the rear side wall of the heating outer box. A rotary motor is fixedly connected to the rear end of the heating outer box. The output end of the rotary motor is fixedly connected to the drive gear, and the drive gear meshes with the driven gear.

[0011] Preferably, a limiting plate is provided on the front side of the sliding plate, and a plurality of limiting grooves are provided on the rear end of the limiting plate. A rotating plate is rotatably connected to the front inner wall of the limiting groove. The limiting groove is located on the front side of the limiting tube. A movable electric push rod is fixedly connected to the rear end of the heating outer box. The output end of the movable electric push rod passes through the rear wall of the heating outer box and is fixedly connected to the rear end of the sliding plate.

[0012] Compared with related technologies, the heating furnace for high-strength aluminum bars provided by this utility model has the following beneficial effects:

[0013] 1. This utility model provides a heating furnace for high-strength aluminum rods. The aluminum rods are heated by a combustion tube. The exhaust gas generated by the combustion enters the waste heat recovery mechanism through the exhaust pipe. While the blower continuously supplies air to the heating outer box, the external air enters the heat exchange tube in the preheating box of the waste heat recovery mechanism through the exhaust pipe. Heat exchange occurs between the air and the exhaust gas, preheating the air entering the heating outer box and realizing the recovery of exhaust gas heat. This prevents cold air from entering the heating outer box and affecting the heating effect of the heating outer box.

[0014] 2. This utility model provides a heating furnace for high-strength aluminum bars. The heating outer casing is equipped with a rotating mechanism. In use, the front end of the aluminum bar is inserted into the limiting groove on the rear side of the limiting plate. As the moving electric push rod pushes the sliding plate forward, the rear end of the aluminum bar extends into the limiting tube. The cooperation of the moving electric push rod, the rotating plate, and the limiting tube fixes the position of the aluminum bar. During heating, a rotary motor drives the driving gear to rotate. The driving gear and the driven gear rotate in cooperation. As the driven gear rotates, the driving rod and the rotating rod connected to the driving rod rotate, thereby driving the transmission gear to rotate. The transmission gear drives the limiting tube and the aluminum plate to rotate through the transmission rod, realizing the rotation operation of the aluminum bar. This ensures that the aluminum bar is heated evenly and avoids affecting the processing of subsequent products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the blower section of this utility model;

[0017] Figure 3 This is a cross-sectional view of the preheating box of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the heat exchange tube of this utility model;

[0019] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 6 For the present utility model Figure 5 Enlarged view of point A in the middle;

[0021] Figure 7 This is a cross-sectional view of the present invention from another position;

[0022] Figure 8 For the present utility model Figure 7 Enlarged view at point B in the middle;

[0023] Figure 9 For the present utility model Figure 7 Enlarged view at point C;

[0024] Figure 10 For the present utility model Figure 7 A schematic diagram showing the rear structure of the structure.

[0025] In the diagram: 1. Heating outer box; 2. Sealed door; 3. Rotating mechanism; 4. Upper partition; 5. Combustion tube; 6. Feed valve; 7. Feed pipe; 8. Air inlet pipe; 9. Blower; 10. Connecting pipe; 11. Preheating box; 12. Exhaust pipe; 13. Extraction pipe; 14. Discharge pipe; 15. Connecting plate; 16. Heat exchange pipe; 17. Lower partition; 18. Oxygen supply hole; 19. Sliding plate; 20. Limiting pipe; 21. Rotating rod; 22. Transmission gear; 23. Limiting plate; 24. Limiting groove; 25. Rotating plate; 26. Moving electric push rod; 27. Driving rod; 28. Driven gear; 29. ​​Rotary motor; 30. Driving gear. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] Please see Figure 1 - Figure 10This utility model provides a technical solution: a heating furnace for high-strength aluminum rods, including a heating outer box 1. A sealing door 2 is provided on the front side of the heating outer box 1. An upper partition 4, a lower partition 17, and a rotating mechanism 3 are provided on the inner side of the heating outer box 1. The outer ends of the upper partition 4 and the lower partition 17 are fixedly connected to the inner side wall of the heating outer box 1. A fuel supply chamber is formed between the lower partition 17 and the lower side wall of the heating outer box 1. An oxygen supply chamber is formed between the lower partition 17 and the upper partition 4. A plurality of oxygen supply holes 18 are provided on the upper partition 4. A plurality of combustion tubes 5 are fixedly connected to the upper end of the lower partition 17. The lower end of the combustion tubes 5 communicates with the fuel supply chamber. The upper end of the combustion tubes 5 passes through the upper partition 4 and extends above the upper partition 4. The plurality of oxygen supply holes 18 and the plurality of combustion tubes 5 are arranged alternately. The upper end of the heating outer box 1 is fixed. A blower 9 and a feed valve 6 are fixedly connected to the outer wall of the heating outer box 1, which is connected to the exhaust pipe 12. A waste heat recovery mechanism is provided between the blower 9 and the exhaust pipe 12. An air inlet pipe 8 is fixedly connected to the output end of the blower 9. The end of the air inlet pipe 8 away from the blower 9 passes through the side wall of the heating outer box 1 and is connected to the oxygen supply chamber. The output end of the feed valve 6 is connected to the feed pipe 7. The end of the feed pipe 7 away from the feed valve 6 passes through the side wall of the heating outer box 1 and is connected to the fuel supply chamber. The input end of the feed valve 6 is externally connected to a gas storage device. This device supplies fuel to the fuel supply chamber through the feed pipe 7 to ensure the continuous combustion of the flame at the upper end of the combustion tube 5. At the same time, the blower 9 introduces external air into the oxygen supply chamber and continuously provides oxygen for fuel combustion through the oxygen supply hole 18 to ensure the fuel burns fully and continuously.

[0029] The waste heat recovery mechanism includes a preheating box 11. An extraction pipe 13 is fixedly connected to the upper end of the preheating box 11, and a connecting pipe 10 is fixedly connected to the lower end of the preheating box 11. The lower end of the connecting pipe 10 is connected to the input end of a blower 9. The extraction pipe 13 connects to the connecting pipe 10 through the preheating box 11. Two connecting plates 15 are arranged inside the preheating box 11, and the outer ends of both connecting plates 15 are fixedly connected to the inner wall of the preheating box 11. Several heat exchange pipes 16 are arranged between the two connecting plates 15. The upper and lower ends of the exchange pipe 16 pass through the upper and lower connecting plates 15 respectively, and are connected to the space on the opposite side of the two connecting plates 15; the side wall of the preheating box 11 near the heating outer box 1 is connected to the end of the exhaust pipe 12 away from the heating outer box 1, and the exhaust pipe 14 is fixedly connected to the side wall of the preheating box 11 away from the exhaust pipe 12. The exhaust pipe 14 and the exhaust pipe 12 are connected through the space between the two connecting plates 15, and the exhaust pipe 14 is externally connected to the exhaust gas treatment module at the end away from the preheating box 11.

[0030] The combustion tube 5 heats the aluminum rod by burning fuel, and the exhaust gas produced enters the waste heat recovery mechanism through the exhaust pipe 12. While the blower 9 continuously supplies air to the heating outer box 1, the external air enters the heat exchange tube 16 in the preheating box 11 of the waste heat recovery mechanism through the exhaust pipe 13. The air exchanges heat with the heat contained in the exhaust gas, thereby preheating the air that is about to enter the heating outer box 1, thus realizing the recovery of exhaust heat, while preventing cold air from entering the heating outer box 1 and affecting the heating effect of the heating outer box 1.

[0031] The rotating mechanism 3 includes a sliding plate 19. The left and right ends of the sliding plate 19 are slidably connected to the inner walls of the left and right sides of the heating outer casing 1 via limiting grooves. Several limiting tubes 20 are provided on the front side of the sliding plate 19. A rotating rod 21 is fixedly connected to the rear end of each limiting tube 20. The rear end of the rotating rod 21 passes through the sliding plate 19 and extends to the rear side of the sliding plate 19. A transmission gear 22 is fixedly connected to the rotating rod 21, and adjacent transmission gears 22 mesh with each other. A driving rod 27 is fixedly connected to the rear end of one of the rotating rods 21. The rear end of the driving rod 27 passes through the rear wall of the heating outer casing 1 and extends to the rear side of the heating outer casing 1. A driven gear 28 is slidably connected to the driving rod 27 via a limiting groove. The front end of the driven gear 28 is rotatably connected to the rear wall of the heating outer casing 1. A rotary motor 29 is fixedly connected to the rear end of the heating outer casing 1. A driving gear 30 is fixedly connected to the output end of the rotary motor 29. The sliding plate 19 is equipped with a limit plate 23 on its front side and a number of limit grooves 24 on its rear end. A rotating plate 25 is rotatably connected to the front inner wall of the limit groove 24. The limit groove 24 is located in front of the limit tube 20. A movable electric push rod 26 is fixedly connected to the rear end of the heating outer box 1. The output end of the movable electric push rod 26 passes through the rear wall of the heating outer box 1 and is fixedly connected to the rear end of the sliding plate 19. While the aluminum plate is being heated, the rotary motor 29 drives the drive gear 30 to rotate. The drive gear 30 rotates in conjunction with the driven gear 28. As the driven gear 28 rotates, the drive rod 27 rotates and the rotating rod 21 connected to the drive rod 27 rotates, which in turn drives the transmission gear 22 to rotate. The transmission gear 22 drives the limit tube 20 and the aluminum plate to rotate through the transmission rod, thereby realizing the rotation operation of the aluminum rod, ensuring that the aluminum rod is heated evenly, and thus avoiding affecting the processing of subsequent products.

[0032] Working principle: When in use, open the sealing door 2 and insert the front end of the aluminum rod into the limiting groove 24 on the rear side of the limiting plate 23. As the moving electric push rod 26 pushes the sliding plate 19 forward, the rear end of the aluminum rod extends into the limiting tube 20. The position of the aluminum rod is fixed by the cooperation of the moving electric push rod 26, the rotating plate 25 and the limiting tube 20. After the position of the aluminum rod is fixed, close the sealing door 2 and open the feeding valve 6. Fuel is supplied to the fuel supply chamber through the feeding pipe 7 to ensure the continuous combustion of the flame at the upper end of the combustion tube 5. At the same time, the blower 9 introduces external air into the oxygen supply chamber and continuously provides oxygen for fuel combustion through the oxygen supply hole 18 to ensure the fuel burns fully and continuously. The combustion tube 5 heats the aluminum rod by burning fuel. The exhaust gas produced enters the waste heat recovery mechanism through the exhaust pipe 12. While the blower 9 continuously supplies air to the heating outer box 1, the external air enters the heat exchange tube 16 in the preheating box 11 of the waste heat recovery mechanism through the exhaust pipe 13. The air exchanges heat with the exhaust gas, thus preheating the air that is about to enter the heating outer box 1, thereby realizing the recovery of exhaust gas heat. At the same time, it prevents cold air from entering the heating outer box 1 and affecting the heating effect of the heating outer box 1. While the aluminum plate is being heated, the rotary motor 29 drives the drive gear 30 to rotate. The drive gear 30 and the driven gear 28 rotate in coordination. As the driven gear 28 rotates, the drive rod 27 and the rotating rod 21 connected to the drive rod 27 rotate, which in turn drives the transmission gear 22 to rotate. The transmission gear 22 drives the limit tube 20 and the aluminum plate to rotate through the transmission rod, thereby realizing the rotation operation of the aluminum rod, ensuring that the aluminum rod is heated evenly, and thus avoiding affecting the processing of subsequent products.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heating furnace for high-strength aluminum bars, comprising a heating outer casing (1), characterized in that: A sealing door (2) is provided on the front side of the heating outer box (1). An upper partition (4), a lower partition (17), and a rotating mechanism (3) are provided on the inner side of the heating outer box (1). The outer ends of the upper partition (4) and the lower partition (17) are fixedly connected to the inner wall of the heating outer box (1). A fuel supply chamber is formed between the lower partition (17) and the lower wall of the heating outer box (1). An oxygen supply chamber is formed between the lower partition (17) and the upper partition (4). Several oxygen supply holes (18) are opened on the upper partition (4). Several combustion pipes (5) are fixedly connected to the upper end of the lower partition (17). The lower end of the combustion pipes (5) communicates with the fuel supply chamber. The upper end of the combustion pipes (5) penetrates the upper partition (4). Extending above the upper partition (4), the upper end of the heating outer box (1) is fixedly connected to the exhaust pipe (12). A blower (9) and a feed valve (6) are fixedly connected to the outer wall of the heating outer box (1). A waste heat recovery mechanism is provided between the blower (9) and the exhaust pipe (12). An air inlet pipe (8) is fixedly connected to the output end of the blower (9). The end of the air inlet pipe (8) away from the blower (9) passes through the side wall of the heating outer box (1) and is connected to the oxygen supply chamber. The output end of the feed valve (6) is connected to the feed pipe (7). The end of the feed pipe (7) away from the feed valve (6) passes through the side wall of the heating outer box (1) and is connected to the fuel supply chamber. The input end of the feed valve (6) is externally connected to a gas storage device.

2. The heating furnace for high-strength aluminum bars according to claim 1, characterized in that: The waste heat recovery mechanism includes a preheating box (11), with an exhaust pipe (13) fixedly connected to the upper end of the preheating box (11) and a connecting pipe (10) fixedly connected to the lower end of the preheating box (11). The lower end of the connecting pipe (10) is connected to the input end of a blower (9). The exhaust pipe (13) is connected to the connecting pipe (10) through the preheating box (11). Two connecting plates (15) are provided on the inner side of the preheating box (11). The outer ends of the two connecting plates (15) are fixedly connected to the inner wall of the preheating box (11). Several heat exchange pipes (16) are provided between the two connecting plates (15). The upper and lower ends of the heat exchange pipes (16) pass through the upper and lower connecting plates (15) respectively and are connected to the space on the opposite side of the two connecting plates (15).

3. A heating furnace for high-strength aluminum bars according to claim 2, characterized in that: The preheating box (11) is connected to the end of the exhaust pipe (12) away from the heating outer box (1) on the side wall near the heating outer box (1). An exhaust pipe (14) is fixedly connected to the side wall of the preheating box (11) away from the exhaust pipe (12). The exhaust pipe (14) and the exhaust pipe (12) are connected through the space between two connecting plates (15). An exhaust gas treatment module is externally connected to the end of the exhaust pipe (14) away from the preheating box (11).

4. The heating furnace for high-strength aluminum bars according to claim 1, characterized in that: The rotating mechanism (3) includes a sliding plate (19). The left and right ends of the sliding plate (19) are slidably connected to the inner walls of the left and right sides of the heating outer box (1) through limiting grooves. A number of limiting tubes (20) are provided on the front side of the sliding plate (19). A rotating rod (21) is fixedly connected to the rear end of the limiting tube (20). The rear end of the rotating rod (21) passes through the sliding plate (19) and extends to the rear side of the sliding plate (19). A transmission gear (22) is fixedly connected to the rotating rod (21), and adjacent transmission gears (22) mesh with each other.

5. A heating furnace for high-strength aluminum bars according to claim 4, characterized in that: One of the rotating rods (21) has a driving rod (27) fixedly connected to its rear end. The rear end of the driving rod (27) passes through the rear wall of the heating outer box (1) and extends to the rear side of the heating outer box (1). A driven gear (28) is slidably connected to the driving rod (27) through a limiting groove. The front end of the driven gear (28) is rotatably connected to the rear wall of the heating outer box (1). A rotary motor (29) is fixedly connected to the rear end of the heating outer box (1). A driving gear (30) is fixedly connected to the output end of the rotary motor (29). The driving gear (30) meshes with the driven gear (28).

6. A heating furnace for high-strength aluminum bars according to claim 4, characterized in that: A limiting plate (23) is provided on the front side of the sliding plate (19). Several limiting grooves (24) are provided on the rear end of the limiting plate (23). A rotating plate (25) is rotatably connected to the front inner wall of the limiting groove (24). The limiting groove (24) is located on the front side of the limiting tube (20). A movable electric push rod (26) is fixedly connected to the rear end of the heating outer box (1). The output end of the movable electric push rod (26) passes through the rear wall of the heating outer box (1) and is fixedly connected to the rear end of the sliding plate (19).

Images