A continuous casting slab waste heat recovery device

Abstract

This utility model discloses a waste heat recovery device for continuous casting billets, relating to the field of waste heat utilization technology in iron and steel metallurgy. The waste heat recovery device includes a roller conveyor belt and a waste heat recovery module. The waste heat recovery module includes a hot gas recovery module, an auxiliary recovery module, and a sealing module. The hot gas recovery module is located at the upper end of the roller conveyor belt, and the auxiliary recovery module is located at the lower end of the roller conveyor belt, directly below the hot gas recovery module. A sealing module is provided at the connection between the hot gas recovery module and the auxiliary recovery module. An adjustment module is provided at the upper end of the hot gas recovery module. Support frames are provided on both sides of the outer side of the roller conveyor belt and are assembled and connected to the roller conveyor belt. This solution provides a solution to the problem of poor sealing performance leading to low waste heat recovery efficiency.

Description

Technical Field

[0001] This utility model relates to the field of waste heat utilization technology in iron and steel metallurgy, specifically to a waste heat recovery device for continuous casting billets. Background Technology

[0002] In the steel metallurgical production process, the temperature of continuously cast billets is extremely high when they emerge from the continuous casting machine, typically reaching 800-1200℃, containing a large amount of waste heat. Currently, most steel companies in China handle the waste heat of continuously cast billets in a relatively simple and crude manner, mainly by placing the high-temperature billets directly in the cooling zone for natural cooling or by using forced air cooling. This approach has several problems: firstly, a large amount of waste heat is directly dissipated into the air without being recovered, resulting in serious energy waste and contradicting the current development concepts of energy conservation, emission reduction, and green production; secondly, natural cooling or forced air cooling methods are inefficient, prolonging the subsequent processing cycle of the continuously cast billets and affecting production efficiency. Furthermore, the heat dissipation process of the high-temperature continuously cast billets also affects the ambient temperature of the workshop, which is detrimental to improving the working environment for operators.

[0003] A waste heat recovery device for metal forging, as disclosed in announcement number CN216011792U, includes a recovery tank, support rods, and an air inlet pipe. Two support rods are fixedly connected to the left and right ends of the recovery tank, respectively. The air inlet pipe is connected to the bottom of the recovery tank. Water tanks are located on both sides of the recovery tank and are fixedly connected to it. Each water tank has a water inlet on one side of its top, and an exhaust port on one side of the top of the recovery tank. Water pipes are located on one side of the top of each water tank, with their ends connected to the recovery tank and the water tank, respectively. A fixing rod is located inside the recovery tank, with a stirring rod rotatably connected to its center. This waste heat recovery device prevents fine dust particles generated during forging from entering the recovery device when extracting waste heat gases, ensuring the long-term quality of the recovery device and demonstrating strong practicality.

[0004] The aforementioned device suffers from poor sealing during use, resulting in low waste heat recovery efficiency. Therefore, we propose a waste heat recovery device for continuous casting billets to address the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a waste heat recovery device for continuously cast billets, so as to solve the problem of poor sealing performance and low waste heat recovery efficiency in the existing technology mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for continuous casting billets, comprising a roller conveyor belt and a waste heat recovery module. The waste heat recovery module includes a hot gas recovery module, an auxiliary recovery module, and a sealing module. The hot gas recovery module is disposed at the upper end of the roller conveyor belt, and the auxiliary recovery module is disposed at the lower end of the roller conveyor belt and directly below the hot gas recovery module. A sealing module is provided at the connection between the hot gas recovery module and the auxiliary recovery module. An adjustment module is provided at the upper end of the hot gas recovery module. Support frames are provided on both sides of the outer side of the roller conveyor belt and are assembled and connected to the roller conveyor belt.

[0007] Preferably, the heat recovery module includes an upper sealing cover, an air intake cover, and an adjustment module. The upper sealing cover is disposed on the upper end of the support frame and is sealed to the support frame. An air intake cover is disposed inside the upper sealing cover. A connecting pipe is disposed on the upper end of the air intake cover. The upper end of the connecting pipe passes through and extends to the upper end of the upper sealing cover. A flange is disposed on the upper end of the connecting pipe. A connecting plate is disposed on the lower end of the flange. The connecting plate is connected to the flange of the flange and is disposed on the outside of the upper sealing cover. An adjustment module is disposed on the upper end of the connecting pipe.

[0008] Preferably, a sealing connector is provided at the connection between the upper sealing cover and the connecting pipe. The sealing connector is assembled and connected to the upper sealing cover and is guided and connected to the connecting pipe.

[0009] Preferably, the upper sealing cover is provided with a waste heat recovery port at its front end.

[0010] Preferably, the adjustment module includes a support base, a corrugated telescopic tube, and hydraulic cylinders. The support base is located at the upper end of the upper sealing cover. A corrugated telescopic tube is installed inside the support base. The upper end of the corrugated telescopic tube passes through and extends to the outside of the support base. Flanges are provided on both the upper and lower sides of the corrugated telescopic tube. The upper flange is connected to the flange on the upper surface of the support base, and the lower flange is connected to the flange on the upper end of the connecting pipe. Four sets of hydraulic cylinders are evenly arranged at the lower end of the support base, and the output ends of the four sets of hydraulic cylinders are all assembled and connected to the upper end of the connecting plate.

[0011] Preferably, the auxiliary recycling module includes a lower sealing cover, a filter plate, a mounting base, and a fan assembly. The lower sealing cover is located directly below the upper sealing cover and is sealed to the lower ends of the support plates on both sides of the roller conveyor belt. A mounting base is provided inside the lower sealing cover, and a fan assembly is provided inside the mounting base. A filter plate is provided at the upper end of the fan assembly, and the filter plate is located at the upper end of the mounting base and is assembled and connected to the mounting base.

[0012] Preferably, the sealing module is provided in two sets, which are respectively located at the front and rear connection points of the heat recovery module and the auxiliary recovery module. Each set of sealing modules includes an upper sealing element and a lower sealing element, and the output ends of the upper sealing element and the lower sealing element are snapped together and connected. They are respectively located on the front and rear sides of the heat recovery module and the auxiliary recovery module. The upper sealing element and the lower sealing element are respectively assembled and connected to the heat recovery module and the auxiliary recovery module. The output ends of the upper sealing element and the lower sealing element are both located between the gaps of the conveyor rollers of the roller conveyor belt.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model uses a roller conveyor belt to transport the freshly forged continuous casting billet to the waste heat recovery module. Two sets of sealing modules are set between the conveyor rollers of the roller conveyor belt. The upper and lower sealing covers are sealed to the support plates on both sides of the roller conveyor belt, thereby forming a relatively sealed environment when recovering waste heat from the continuous casting billet. The hot air is guided to the suction hood by the fan group. The main waste heat recovery is carried out by the recovery device connected to the upper flange of the corrugated expansion pipe. The remaining waste heat in the upper sealing cover is recovered through the waste heat recovery port in conjunction with the recovery device, thereby solving the problem of poor sealing and low waste heat recovery efficiency.

[0014] (2) By setting an adjustment module at the upper end of the suction hood, four sets of identical hydraulic cylinders are raised and lowered simultaneously, driving the connecting plate to rise and fall, thereby driving the suction hood to adjust its height, so that the suction hood can cover the continuous casting billet, increasing the main waste heat recovery efficiency, thus solving the problem of low waste heat recovery efficiency for continuous casting billets of different sizes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is an enlarged view of the adjustment module of this utility model; In the diagram: 1. Roller conveyor belt; 2. Waste heat recovery module; 3. Hot air recovery module; 31. Upper sealing cover; 32. Suction cover; 4. Auxiliary recovery module; 41. Lower sealing cover; 42. Filter plate; 43. Mounting base; 44. Fan assembly; 5. Adjustment module; 51. Support base; 52. Corrugated telescopic pipe; 53. Hydraulic cylinder; 6. Support frame; 7. Waste heat recovery port; 8. Sealing module; 81. Upper seal; 82. Lower seal. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-4 This utility model provides an embodiment of a continuous casting billet waste heat recovery device, including a roller conveyor belt 1 and a waste heat recovery module 2. The waste heat recovery module 2 includes a hot gas recovery module 3, an auxiliary recovery module 4, and a sealing module 8. The hot gas recovery module 3 is located at the upper end of the roller conveyor belt 1, and the auxiliary recovery module 4 is located at the lower end of the roller conveyor belt 1, directly below the hot gas recovery module 3. A sealing module 8 is provided at the connection between the hot gas recovery module 3 and the auxiliary recovery module 4. An adjustment module 5 is provided at the upper end of the hot gas recovery module 3. Support frames 6 are provided on both sides of the outer side of the roller conveyor belt 1 and are assembled and connected to the roller conveyor belt 1. The roller conveyor belt 1 transports the freshly forged continuous casting billet into the waste heat recovery module 2. Two sets of sealing modules 8 are set between the conveying rollers of the roller conveyor belt 1, and are in conjunction with the upper sealing cover 31 and the lower sealing cover 41. The support plates on both sides of the roller conveyor belt 1 are sealed together, thus creating a relatively sealed environment for the recovery of residual heat from the continuously cast billet. The hot air is guided to the suction hood 32 by the fan group 44, and the main residual heat is recovered by the recovery device connected to the upper flange of the corrugated telescopic pipe 52. The residual heat remaining in the upper sealing cover 31 is recovered by the recovery device through the residual heat recovery port 7, thus solving the problem of poor sealing and low residual heat recovery efficiency. An adjustment module 5 is set at the upper end of the suction hood 32. The connection plate is raised and lowered simultaneously by four sets of identical hydraulic cylinders 53, thereby adjusting the height of the suction hood 32 so that it can cover the continuously cast billet, increasing the main residual heat recovery efficiency and solving the problem of low residual heat recovery efficiency for continuously cast billets of different sizes.

[0018] Please see Figure 3 The heat recovery module 3 includes an upper sealing cover 31, an air suction cover 32, and an adjustment module 5. The upper sealing cover 31 is installed on the upper end of the support frame 6 and is sealed to the support frame 6. The air suction cover 32 is installed inside the upper sealing cover 31. A connecting pipe is installed at the upper end of the air suction cover 32. The upper end of the connecting pipe passes through and extends to the upper end of the upper sealing cover 31. A flange is installed at the upper end of the connecting pipe. A connecting plate is installed at the lower end of the flange. The connecting plate is connected to the flange of the flange and is located on the outside of the upper sealing cover 31. The adjustment module 5 is installed at the upper end of the connecting pipe to play the role of waste heat recovery.

[0019] Please see Figure 3 A sealing connector is provided at the connection between the upper sealing cover 31 and the connecting pipe. The sealing connector is assembled and connected to the upper sealing cover 31 and is also connected to the connecting pipe guide, which increases the sealing performance.

[0020] Please see Figure 1 The upper sealing cover 31 has a waste heat recovery port 7 at its front end, which serves to recover the remaining waste heat.

[0021] Please see Figure 4 The adjustment module 5 includes a support base 51, a corrugated telescopic tube 52, and a hydraulic cylinder 53. The support base 51 is located on the upper end of the upper sealing cover 31. The corrugated telescopic tube 52 is installed inside the support base 51. The upper end of the corrugated telescopic tube 52 passes through and extends to the outside of the support base 51. Flanges are provided on both the upper and lower sides of the corrugated telescopic tube 52. The upper flange is connected to the flange on the upper surface of the support base 51, and the lower flange is connected to the flange on the upper end of the connecting pipe. Four sets of hydraulic cylinders 53 are evenly arranged at the lower end of the support base 51. The output ends of the four sets of hydraulic cylinders 53 are all assembled and connected to the upper end of the connecting plate, which plays the role of adjusting the height of the suction cover 32.

[0022] Please see Figure 3 The auxiliary recovery module 4 includes a lower sealing cover 41, a filter plate 42, a mounting base 43, and a fan assembly 44. The lower sealing cover 41 is located directly below the upper sealing cover 31 and is sealed to the lower ends of the support plates on both sides of the roller conveyor belt 1. The mounting base 43 is located inside the lower sealing cover 41, and the fan assembly 44 is located inside the mounting base 43. The filter plate 42 is located on the upper end of the fan assembly 44 and is assembled and connected to the mounting base 43, thereby assisting in improving the waste heat recovery efficiency.

[0023] Please see Figure 3 The sealing module 8 is provided in two sets, which are respectively located at the front and rear connection points of the heat recovery module 3 and the auxiliary recovery module 4. Each set of sealing modules 8 includes an upper sealing element 81 and a lower sealing element 82. The output ends of the upper sealing element 81 and the lower sealing element 82 are connected by a locking mechanism and are respectively located on the front and rear sides of the heat recovery module 3 and the auxiliary recovery module 4. The upper sealing element 81 and the lower sealing element 82 are respectively assembled and connected to the heat recovery module 3 and the auxiliary recovery module 4. The output ends of the upper sealing element 81 and the lower sealing element 82 are both located in the gaps between the conveyor rollers of the roller conveyor belt 1, which serves to increase the sealing performance of the waste heat recovery module 2.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A waste heat recovery device for continuous casting billets, comprising a roller conveyor belt (1) and a waste heat recovery module (2), characterized in that: The waste heat recovery module (2) includes a heat recovery module (3), an auxiliary recovery module (4) and a sealing module (8). The heat recovery module (3) is located at the upper end of the roller conveyor belt (1). The auxiliary recovery module (4) is located at the lower end of the roller conveyor belt (1) and directly below the heat recovery module (3). A sealing module (8) is provided at the connection between the heat recovery module (3) and the auxiliary recovery module (4). An adjustment module (5) is provided at the upper end of the heat recovery module (3). Support frames (6) are provided on both sides of the outside of the roller conveyor belt (1) and are assembled and connected to the roller conveyor belt (1).

2. The waste heat recovery device for continuously cast billets according to claim 1, characterized in that: The heat recovery module (3) includes an upper sealing cover (31), an air suction cover (32), and an adjustment module (5). The upper sealing cover (31) is located on the upper end of the support frame (6) and is sealed to the support frame (6). An air suction cover (32) is located inside the upper sealing cover (31). A connecting pipe is located at the upper end of the air suction cover (32). The upper end of the connecting pipe passes through and extends to the upper end of the upper sealing cover (31). A flange is located at the upper end of the connecting pipe. A connecting plate is located at the lower end of the flange. The connecting plate is connected to the flange of the flange and is located outside the upper sealing cover (31). An adjustment module (5) is located at the upper end of the connecting pipe.

3. The waste heat recovery device for continuously cast billets according to claim 2, characterized in that: A sealing connector is provided at the connection between the upper sealing cover (31) and the connecting pipe. The sealing connector is assembled and connected to the upper sealing cover (31) and is guided and connected to the connecting pipe.

4. The waste heat recovery device for continuously cast billets according to claim 3, characterized in that: The upper sealing cover (31) is provided with a waste heat recovery port (7) at its front end.

5. The waste heat recovery device for continuously cast billets according to claim 4, characterized in that: The adjustment module (5) includes a support base (51), a corrugated telescopic tube (52), and a hydraulic cylinder (53). The support base (51) is located on the upper end of the upper sealing cover (31). The corrugated telescopic tube (52) is installed inside the support base (51). The upper end of the corrugated telescopic tube (52) extends through and extends to the outside of the support base (51). Flanges are provided on both the upper and lower sides of the corrugated telescopic tube (52). The upper flange is connected to the upper surface flange of the support base (51), and the lower flange is connected to the flange provided on the upper end of the connecting pipe. Four sets of hydraulic cylinders (53) are evenly arranged at the lower end of the support base (51). The output ends of the four sets of hydraulic cylinders (53) are all assembled and connected to the upper end of the connecting plate.

6. The waste heat recovery device for continuously cast billets according to claim 5, characterized in that: The auxiliary recycling module (4) includes a lower sealing cover (41), a filter plate (42), a mounting base (43), and a fan assembly (44). The lower sealing cover (41) is located directly below the upper sealing cover (31) and is sealed to the lower ends of the support plates on both sides of the roller conveyor belt (1). The mounting base (43) is located inside the lower sealing cover (41). The fan assembly (44) is located inside the mounting base (43). The filter plate (42) is located at the upper end of the fan assembly (44). The filter plate (42) is located at the upper end of the mounting base (43) and is assembled and connected to the mounting base (43).

7. The waste heat recovery device for continuously cast billets according to claim 6, characterized in that: The sealing module (8) is provided in two sets. The two sets of sealing modules (8) are respectively located at the front and rear connection of the heat recovery module (3) and the auxiliary recovery module (4). Both sets of sealing modules (8) include an upper sealing element (81) and a lower sealing element (82). The output ends of the upper sealing element (81) and the lower sealing element (82) are connected and respectively located on the front and rear sides of the heat recovery module (3) and the auxiliary recovery module (4). The upper sealing element (81) and the lower sealing element (82) are respectively assembled and connected to the heat recovery module (3) and the auxiliary recovery module (4). The output ends of the upper sealing element (81) and the lower sealing element (82) are both located in the gap between the conveying rollers of the roller conveyor belt (1).

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