Round steel forming temperature control energy-saving type heat treatment device

Abstract

The utility model discloses a round steel forming temperature-control energy-saving heat treatment device, which belongs to the technical field of metal material treatment, and adopts the technical scheme that the round steel forming temperature-control energy-saving heat treatment device comprises a continuous heat treatment furnace, the top of the continuous heat treatment furnace is fixedly connected with a smoke exhaust pipe, and the bottom of the inner side of the smoke exhaust pipe is movably connected with an aperture adjusting mechanism; the inner side of the smoke exhaust pipe is movably connected with a waste heat recovery mechanism, the waste heat recovery mechanism is arranged at the top of the aperture adjusting mechanism, a bearing frame capable of being pulled out can be arranged near the smoke exhaust port, and a bearing partition plate and a telescopic pressing plate are combined to be matched with different heat exchangers, so that the bearing frame is conveniently pulled out for maintenance and replacement; and the heat exchanger is close to the smoke outlet, so that the heat transfer loss is reduced, the high-temperature smoke waste heat recovery efficiency is improved, and the problems that the heat energy utilization rate is low due to the fact that the position of a traditional heat exchanger is far, and the heat exchanger is idle for a long time due to the fact that maintenance is difficult are solved.

Description

Technical Field

[0001] This utility model relates to the field of metal material processing technology, and in particular to a temperature-controlled and energy-saving heat treatment device for round steel forming. Background Technology

[0002] The heat treatment equipment for round steel is used to improve the mechanical properties of round steel. Traditional equipment has problems such as uneven heating, high energy consumption, and low temperature control accuracy. In addition, the low degree of automation leads to low production efficiency and unstable product quality, making it difficult to meet the modern industry's demand for high strength and high toughness of round steel. Therefore, it is necessary to develop a new type of heat treatment equipment that is efficient, precise and energy-saving.

[0003] In existing technologies, continuous heat treatment furnaces typically have fixed exhaust volumes or crude damper adjustments when emitting waste gas, making it difficult to adapt to the gradient temperature requirements of each heating section. They also suffer from low thermal energy utilization due to insufficient recovery of waste heat from high-temperature flue gas and the difficulty in maintaining traditional heat exchangers, leading to long-term idleness.

[0004] To address this, a temperature-controlled and energy-saving heat treatment device for round steel forming is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a temperature-controlled and energy-saving heat treatment device for round steel forming, which can solve the problems of heat energy waste, difficult maintenance of heat processors, and insufficient temperature control accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a round steel forming temperature-controlled energy-saving heat treatment device, including a continuous heat treatment furnace, a flue pipe fixedly connected to the top of the continuous heat treatment furnace, an aperture adjustment mechanism movably connected to the bottom of the inner side of the flue pipe, a waste heat recovery mechanism movably connected to the inner side of the flue pipe, and the waste heat recovery mechanism being located on top of the aperture adjustment mechanism.

[0007] The waste heat recovery mechanism includes a support frame slidably connected to the inside of the flue pipe. A support partition is fixedly connected to the bottom of the inside of the support frame. A nested telescopic column is fixedly connected to the right side of the inside of the support frame. A compression spring is fixedly connected to the inside of the nested telescopic column. A pressure plate is fixedly connected to the outside of the nested telescopic column. A heat exchanger is provided inside the support frame and is located to the left of the pressure plate. A telescopic rod is rotatably connected to the right side of the support frame, and the other end of the telescopic rod is rotatably connected to the right side of the flue pipe. A tension spring is fixedly connected to the outside of the telescopic rod.

[0008] Preferably, the aperture adjustment mechanism includes two shielding plates slidably connected to the inside of the exhaust pipe, and the two shielding plates are respectively slidably connected to the left and right sides of the inside of the exhaust pipe.

[0009] Preferably, a linkage rod is rotatably connected to the top of the cover plate, a lifting rod is rotatably connected to the top of the linkage rod, and a fan is fixedly connected to the top of the lifting rod.

[0010] Preferably, sliding blocks are fixedly connected to both sides of the fan, and sliding rails are slidably connected to the outer side of the sliding blocks. The sliding rails are fixedly connected to both sides of the inner side of the exhaust pipe, and a telescopic motor is fixedly connected to the top of the sliding rails. The sliding blocks are fixedly connected to the output end of the telescopic motor.

[0011] Preferably, the bottom of the supporting partition is fixedly connected to a first positioning magnet.

[0012] Preferably, an extension block is fixedly connected to the left side of the exhaust pipe, and a second positioning magnet is fixedly connected to the top of the extension block, with the first positioning magnet positioned on top of the second positioning magnet.

[0013] Preferably, a first sealing ring is fixedly connected to the left side of the exhaust pipe, and the first sealing ring is disposed on the outside of the support frame.

[0014] Preferably, a second sealing ring is fixedly connected to the left side of the exhaust pipe, and the second sealing ring is disposed on the outside of the cover plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By setting an aperture adjustment mechanism, this application can configure a pull-out support frame near the flue gas outlet. Combined with the support partition and the telescopic pressure plate, it can adapt to different heat exchangers. This not only makes it convenient to pull out the support frame for maintenance and replacement, avoiding the heat exchanger from being idle for a long time due to difficult maintenance, but also reduces heat transfer loss because the heat exchanger is close to the flue gas outlet, thereby improving the high-temperature flue gas waste heat recovery efficiency. This solves the problems of low heat utilization rate and long-term idleness due to difficult maintenance caused by the remote location of traditional heat exchangers.

[0017] 2. By setting up a waste heat recovery mechanism, this application can install a shield plate that can be adjusted by moving a fan at the independent flue gas inlet of the core smoke-producing area at each stage. This can precisely adjust the flue gas flow rate and speed, thereby controlling the residence time of high-temperature flue gas in the heating zone. This achieves both precise control of the heating zone temperature and effective utilization of flue gas heat energy, solving the problem that continuous heat treatment furnaces are difficult to adapt to the gradient temperature requirements of each heating section due to fixed or coarse flue gas volume adjustment. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the round steel forming temperature-controlled energy-saving heat treatment device of this utility model;

[0019] Figure 2 This is a diagram showing the internal structure of the exhaust pipe of this utility model;

[0020] Figure 3 This is an overall structural diagram of the waste heat recovery mechanism of this utility model;

[0021] Figure 4 This is an overall structural diagram of the aperture adjustment mechanism of this utility model;

[0022] Figure 5 This is a partial structural diagram of the load-bearing frame of this utility model.

[0023] In the diagram, 1. Continuous heat treatment furnace; 2. Exhaust pipe; 3. Aperture adjustment mechanism; 31. Cover plate; 32. Linkage rod; 33. Lifting rod; 34. Fan; 35. Sliding block; 36. Sliding rail; 37. Telescopic motor; 4. Waste heat recovery mechanism; 41. Bearing frame; 42. Bearing partition; 43. Nested telescopic column; 44. Compression spring; 45. Pressure plate; 46. Heat exchanger; 47. Telescopic pull rod; 48. Tension spring; 5. First positioning magnet; 6. Extension block; 7. Second positioning magnet; 8. First sealing ring; 9. Second sealing ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] A round steel forming temperature-controlled energy-saving heat treatment device includes a continuous heat treatment furnace 1 with a flue pipe 2 fixedly connected to the top, an aperture adjustment mechanism 3 movably connected to the bottom of the inner side of the flue pipe 2, and a waste heat recovery mechanism 4 movably connected to the inner side of the flue pipe 2. The waste heat recovery mechanism 4 is located on the top of the aperture adjustment mechanism 3.

[0027] The waste heat recovery mechanism 4 includes a support frame 41 slidably connected to the inside of the flue pipe 2. A support partition 42 is fixedly connected to the bottom of the inside of the support frame 41. A nested telescopic column 43 is fixedly connected to the right side of the inside of the support frame 41. A compression spring 44 is fixedly connected to the inside of the nested telescopic column 43. A pressure plate 45 is fixedly connected to the outside of the nested telescopic column 43. A heat exchanger 46 is provided inside the support frame 41 and is located to the left of the pressure plate 45. A telescopic rod 47 is rotatably connected to the right side of the support frame 41, and the other end of the telescopic rod 47 is rotatably connected to the right side of the flue pipe 2. A tension spring 48 is fixedly connected to the outside of the telescopic rod 47.

[0028] In this embodiment: During the heat treatment of round steel forming, the heating process of the continuous heat treatment furnace 1 is divided into three stages: preheating, intermediate heating, and final heating. Each stage's core smoke-generating area is equipped with a separate exhaust pipe 2 to achieve independent smoke exhaust. The temperature of the flue gas at the inlet section of the exhaust pipe 2 is still relatively high. Traditional heat exchangers 46 suffer from large heat loss or are difficult to maintain due to their location. Now, the exhaust pipe 2 is equipped with a support frame 41 that can be pulled out internally near the exhaust port. The bottom of the support frame 41 has multiple support partitions 42, and the left side has a pressure plate 45 supported by nested telescopic columns 43 and their inner compression springs 44 to accommodate different sizes of heat exchangers 46. During replacement and maintenance, the support frame 41 is pulled out from one side, so that it faces outwards. The sliding mechanism allows the telescopic rod 47 and its outer tension spring 48 between the other side of the support frame 41 and the exhaust pipe 2 to accumulate elastic potential energy. After being pulled out to the size suitable for the installation and removal of the heat exchanger 46, the first positioning magnet 5 at the bottom of the support plate 42 and the second positioning magnet 7 at the bottom of the extension block 6 are attached and positioned. The pressure plate 45 is pressed, causing the nested telescopic column 43 and the compression spring 44 between it and the inner wall to retract. After the heat exchanger 46 is replaced, the pressure plate 45 is released to allow it to spring back and fix the heat exchanger 46. The attachment of the first positioning magnet 5 and the second positioning magnet 7 is released. Under the pull back of the telescopic rod 47 and its outer tension spring 48, the support frame 41 quickly returns to the inside of the exhaust pipe 2 and the recycling operation is carried out again.

[0029] Specifically, such as Figure 1 , Figure 2 , Figure 4 As shown, the aperture adjustment mechanism 3 includes two shield plates 31 that are slidably connected to the inside of the exhaust pipe 2, and the two shield plates 31 are respectively slidably connected to the left and right sides of the inside of the exhaust pipe 2.

[0030] Specifically, such as Figure 1 , Figure 2 , Figure 4 As shown, a linkage rod 32 is rotatably connected to the top of the cover plate 31, a lifting rod 33 is rotatably connected to the top of the linkage rod 32, and a fan 34 is fixedly connected to the top of the lifting rod 33.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 4 As shown, sliding blocks 35 are fixedly connected to both sides of the fan 34, and sliding rails 36 are slidably connected to the outer side of the sliding blocks 35. The sliding rails 36 are fixedly connected to both sides of the inner side of the exhaust pipe 2, and telescopic motors 37 are fixedly connected to the top of the sliding rails 36. The sliding blocks 35 are fixedly connected to the output end of the telescopic motors 37.

[0032] In this embodiment: Two sets of shielding plates 31 are provided at the smoke inlet of the smoke exhaust pipe 2, which overlap with the left and right outer walls of the smoke exhaust pipe 2 and block the smoke exhaust pipe 2. The top of the shielding plate 31 is provided with a fan 34 which is slidably connected to the inner wall sliding rail 36 of the smoke exhaust pipe 2 via a sliding block 35. When adjusting the shielding area of ​​the shielding plate 31, the small telescopic motor 37 at the top of the sliding rail 36 is started, so that the sliding block 35 slides down, driving the fan 34 to move towards the opening of the shielding plate 31. When the fan 34 moves down, the lifting rod 33 fixedly connected to its bottom also moves down. When the distance between the lifting rod 33 and the shielding plate 31 decreases, the linkage rods 32 on both sides that are rotatably connected to the shielding plate 31 rotate outward, so that the bottom opening of the linkage rods 32, which were originally in the shape of an "eight", expands, driving the shielding plate 31 to slide outward, thereby adjusting the shielding area of ​​the shielding plate 31. In turn, by adjusting the opening, the smoke exhaust flow rate and speed are controlled, the residence time of high temperature smoke in the processing area is adjusted, and the heat control of the processing area and the high temperature reuse of smoke are realized.

[0033] Specifically, such as Figure 3 , Figure 5 As shown, the bottom of the supporting partition 42 is fixedly connected to a first positioning magnet 5.

[0034] Specifically, such as Figure 3 , Figure 5 As shown, an extension block 6 is fixedly connected to the left side of the exhaust pipe 2, and a second positioning magnet 7 is fixedly connected to the top of the extension block 6. A first positioning magnet 5 is located on the top of the second positioning magnet 7.

[0035] In this embodiment: the first positioning magnet 5 at the bottom of the bearing partition 42 and the second positioning magnet 7 at the bottom of the extension block 6 are attached and positioned. After the attachment is released, the bearing frame 41 quickly returns to the inside of the exhaust pipe 2 under the pull back of the telescopic rod 47 and its outer tension spring 48.

[0036] Specifically, such as Figure 1 As shown, a first sealing ring 8 is fixedly connected to the left side of the exhaust pipe 2, and the first sealing ring 8 is located on the outside of the support frame 41.

[0037] Specifically, such as Figure 1 As shown, a second sealing ring 9 is fixedly connected to the left side of the exhaust pipe 2, and the second sealing ring 9 is located on the outside of the cover plate 31.

[0038] In this embodiment, the first sealing ring 8 and the second sealing ring 9 can achieve a sealing effect at the connection between the cover plate 31 and the support frame 41.

[0039] Working Principle: During the forming heat treatment of round steel, a continuous heat treatment furnace 1 is typically used. The overall heating process is divided into three stages: preheating, intermediate heating, and final heating. In each stage's core smoke-generating area, a separate exhaust pipe 2 is installed for independent smoke exhaust. To effectively utilize the high heat of the flue gas to control the temperature within the heating zone, two sets of shielding plates 31 are installed at the smoke inlet of the exhaust pipe 2, overlapping with the left and right outer walls of the exhaust pipe 2 and covering the entire exhaust pipe 2. A fan 34 is installed at the top of the shielding plate 31, sliding within a sliding rail 36 on the inner wall of the exhaust pipe 2 via a sliding block 35. When the shielding area of ​​the shielding plate 31 needs adjustment, the fan 34 is activated by activating the fan located at the top of the sliding rail 36. The small telescopic motor 37 in the part causes the sliding block 35 at the output end of the small telescopic motor 37 to slide downward, thereby driving the fan 34 to move towards the opening of the shield plate 31. When the fan 34 moves downward, it will drive the lifting rod 33 fixedly connected to its bottom to move downward. When the distance between the lifting rod 33 and the shield plate 31 decreases, the linkage rods 32 rotatably connected to the shield plate 31 on both sides will rotate outward at the same time, gradually expanding the "eight"-shaped bottom opening formed by the two linkage rods 32. This achieves the effect of driving the bottom shield plate 31 to slide outward at the same time, thereby adjusting the shielding area of ​​the shield plate 31. By adjusting the opening, the exhaust flow rate and velocity of the flue gas can be adjusted, thereby adjusting the residence time of the high-temperature flue gas in the processing area, and achieving the effect of adjusting the processing area. The system effectively controls heat transfer and reuses high-temperature flue gas. Secondly, the flue gas maintains a relatively high temperature at the inlet section of the exhaust pipe 2. Traditional heat exchangers 46 are typically located far from the exhaust outlet, resulting in significant heat loss during transfer. Heat exchangers 46 located near the exhaust outlet are also difficult to maintain. Now, a pull-out support frame 41 is installed near the exhaust outlet of the exhaust pipe 2. This support frame 41 has multiple support partitions 42 at its bottom and a pressure plate 45 on its left side supported by nested telescopic columns 43 and their inner compression springs 44. This allows for adaptation to different sizes of heat exchangers 46. During replacement and maintenance, only one side of the support frame 41 needs to be pulled out, allowing it to slide outwards, and the other side of the support frame 41 is then pulled outwards from the exhaust pipe 2. Both rod 47 and its outer tension spring 48 accumulate elastic potential energy. After being pulled out to a size that is suitable for both the installation and removal models of heat exchanger 46, the first positioning magnet 5 at the bottom of the bearing partition 42 and the second positioning magnet 7 at the bottom of the extension block 6 are attached and positioned. After replacing the heat exchanger 46 under the contraction of the pressure plate 45, the nested telescopic column 43 between the pressure plate 45 and the inner wall, and the compression spring 44, the pressure plate 45 is released to allow it to spring back and fix the heat exchanger 46. Then, the attraction between the first positioning magnet 5 and the second positioning magnet 7 is released, and the bearing frame 41 is quickly reset to the inside of the exhaust pipe 2 under the pull of the telescopic rod 47 and its outer tension spring 48, and the recycling operation is carried out again. In summary, the temperature control and energy saving of the round steel forming heat treatment device are optimized.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A round steel forming temperature control energy-saving type heat treatment device, comprising a continuous heat treatment furnace (1), characterized in that: The top of the continuous heat treatment furnace (1) is fixedly connected to a flue pipe (2), the bottom of the inner side of the flue pipe (2) is movably connected to an aperture adjustment mechanism (3), the inner side of the flue pipe (2) is movably connected to a waste heat recovery mechanism (4), and the waste heat recovery mechanism (4) is located on the top of the aperture adjustment mechanism (3). The waste heat recovery mechanism (4) includes a support frame (41) slidably connected to the inside of the flue pipe (2). A support partition (42) is fixedly connected to the bottom of the inside of the support frame (41). A nested telescopic column (43) is fixedly connected to the right side of the inside of the support frame (41). A compression spring (44) is fixedly connected to the inside of the nested telescopic column (43). A pressure plate (45) is fixedly connected to the outside of the nested telescopic column (43). A heat exchanger (46) is provided inside the support frame (41). The heat exchanger (46) is located to the left of the pressure plate (45). A telescopic rod (47) is rotatably connected to the right side of the support frame (41). The other end of the telescopic rod (47) is rotatably connected to the right side of the flue pipe (2). A tension spring (48) is fixedly connected to the outside of the telescopic rod (47).

2. The round steel forming temperature-controlled energy-saving heat treatment device according to claim 1, characterized in that: The aperture adjustment mechanism (3) includes two shield plates (31) slidably connected to the inside of the exhaust pipe (2), and the two shield plates (31) are respectively slidably connected to the left and right sides of the inside of the exhaust pipe (2).

3. The round steel forming temperature-controlled energy-saving heat treatment device according to claim 2, characterized in that: The top of the cover plate (31) is rotatably connected to a linkage rod (32), the top of the linkage rod (32) is rotatably connected to a lifting rod (33), and the top of the lifting rod (33) is fixedly connected to a fan (34).

4. The round steel forming temperature-controlled energy-saving heat treatment device according to claim 3, characterized in that: Sliding blocks (35) are fixedly connected to both sides of the fan (34), and sliding rails (36) are slidably connected to the outer side of the sliding blocks (35). The sliding rails (36) are fixedly connected to both sides of the inner side of the exhaust pipe (2). A telescopic motor (37) is fixedly connected to the top of the sliding rails (36), and the sliding blocks (35) are fixedly connected to the output end of the telescopic motor (37).

5. The round steel forming temperature-controlled energy-saving heat treatment device according to claim 1, characterized in that: The bottom of the bearing partition (42) is fixedly connected to a first positioning magnet (5).

6. The round steel forming temperature-controlled energy-saving heat treatment device according to claim 5, characterized in that: An extension block (6) is fixedly connected to the left side of the exhaust pipe (2), and a second positioning magnet (7) is fixedly connected to the top of the extension block (6). The first positioning magnet (5) is located on the top of the second positioning magnet (7).

7. The round steel forming temperature-controlled energy-saving heat treatment device according to claim 1, characterized in that: The left side of the exhaust pipe (2) is fixedly connected to a first sealing ring (8), which is located on the outside of the support frame (41).

8. The round steel forming temperature-controlled energy-saving heat treatment device according to claim 2, characterized in that: A second sealing ring (9) is fixedly connected to the left side of the exhaust pipe (2), and the second sealing ring (9) is located on the outside of the cover plate (31).

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