Multi-bin continuous heating device for heat treatment of steel pipes

Abstract

The utility model relates to the technical field of continuous heating, and discloses a multi-bin continuous heating device for steel pipe heat treatment, which comprises a roller conveyor, a protective shell is fixedly connected to the top of the roller conveyor, a heating pipe is fixedly connected in the protective shell, a first supporting plate is fixedly connected to the top of the protective shell, and a second supporting plate is fixedly connected to the top of the first supporting plate. A first air cylinder is fixedly connected to the inner wall of the first supporting plate, a first sliding block is fixedly connected to the output end of the first air cylinder, a first sliding rail is slidably connected to the bottom of the first sliding block, and a gathering assembly is arranged on the inner wall of the first sliding block. According to the utility model, the first sliding block moves to drive the two rotating plates on the inner wall to rotate, so that the fixed column and the first connecting plate are gathered, and meanwhile, the second sliding block is driven to slide in the second sliding rail to promote the first connecting ring to be gathered, so that the problem of lateral deviation of the steel pipe on the roller bed due to inertia, vibration or thermal deformation is solved, and non-uniform heating is avoided; and the stability of the multi-bin continuous heating device is improved.

Description

Technical Field

[0001] This utility model relates to the field of continuous heating technology, and in particular to a multi-compartment continuous heating device for heat treatment of steel pipes. Background Technology

[0002] In modern industrial production, steel pipes, as an important basic material, are widely used in various fields such as petroleum, chemical industry, and construction. Heat treatment of steel pipes is a key process to improve their performance, and multi-compartment continuous heating devices, as the core equipment for steel pipe heat treatment, directly affect the quality and production efficiency of steel pipes.

[0003] Currently, most existing multi-compartment continuous heating devices for steel pipe heat treatment employ a roller conveyor structure. Multiple rollers are arranged sequentially to form a conveying path, transporting the steel pipe from the inlet to the outlet. During the heating process, heating elements, such as resistance wires or gas flames, distributed on either side or above the rollers, heat the steel pipe. The technical principle is that the rotation of the rollers drives the steel pipe forward; during this movement, the steel pipe continuously receives heat radiation or conduction from the heating elements, thus achieving continuous heating.

[0004] However, this existing technology based on roller conveyor has significant drawbacks. When steel pipes are conveyed on the roller conveyor, they are prone to lateral displacement due to their own inertia, equipment vibration, and thermal deformation. Once this lateral displacement occurs, the distance between different parts of the steel pipe and the heating element varies, resulting in inconsistent heat reception across different areas of the pipe surface and ultimately uneven heating. This not only affects the heat treatment quality of the steel pipe and reduces the product qualification rate, but also leads to unstable steel pipe performance due to localized overheating or underheating, increasing the difficulty and cost of subsequent processing. Therefore, a multi-compartment continuous heating device for steel pipe heat treatment is proposed to solve these problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a multi-compartment continuous heating device for heat treatment of steel pipes, which aims to improve the problem of uneven heating caused by the lateral displacement of steel pipes on the roller conveyor due to inertia, vibration or thermal deformation in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-compartment continuous heating device for heat treatment of steel pipes includes a roller conveyor. A protective shell is fixedly connected to the top of the roller conveyor. A heating tube is fixedly connected inside the protective shell. A first support plate is fixedly connected to the top of the protective shell. A first cylinder is fixedly connected to the inner wall of the first support plate. A first slider is fixedly connected to the output end of the first cylinder. A first slide rail is slidably connected to the bottom of the first slider. A gathering component is provided on the inner wall of the first slider.

[0008] The gathering component includes a first rotating plate and a second rotating plate. The bottom of both the first rotating plate and the second rotating plate are rotatably connected to the inner wall of the first slider. A fixing column is fixedly connected inside both the first rotating plate and the second rotating plate. A first connecting plate is fixedly connected to the bottom of the fixing column. A first connecting ring is fixedly connected to the side wall of the first connecting plate. A support component is provided on the side wall of the first connecting ring. A sliding component is provided on the outer wall of both the first rotating plate and the second rotating plate.

[0009] As a further description of the above technical solution:

[0010] The support assembly includes a second connecting plate, the side wall of which is fixedly connected to the side wall of the first connecting ring, and a rotating wheel is rotatably connected to the inner wall of the second connecting plate.

[0011] As a further description of the above technical solution:

[0012] The sliding assembly includes a second slider, the sidewalls of which are fixedly connected to the outer walls of the first rotating plate and the second rotating plate. The sidewalls of the second slider are slidably connected to a second slide rail, and the bottom of the second slide rail is fixedly connected to the top of one of the protective shells.

[0013] As a further description of the above technical solution:

[0014] A second fixing plate is fixedly connected to the side wall of the protective shell, a water pump is fixedly connected inside the second fixing plate, a second connecting pipe is fixedly connected to the output end of the water pump, a first connecting pipe is fixedly connected to the input end of the water pump, a second cylinder is fixedly connected to the side wall of the protective shell, and a third support plate is fixedly connected to the output end of the second cylinder.

[0015] As a further description of the above technical solution:

[0016] The inner wall of the third support plate is rotatably connected to a rotating column, one end of which is fixedly connected to one end of the first connecting pipe.

[0017] As a further description of the above technical solution:

[0018] An umbrella-shaped plate is fixedly connected to one end of the rotating column, and a third rotating plate is fixedly connected to the side wall of the umbrella-shaped plate.

[0019] As a further description of the above technical solution:

[0020] The third rotating plate is rotatably connected to the side wall of the second support plate, and the side wall of the second support plate is fixedly connected to the side wall of the protective shell.

[0021] As a further description of the above technical solution:

[0022] A second connecting ring is fixedly connected to the side wall of the umbrella-shaped plate, and a nozzle is fixedly connected to the side wall of the second connecting ring. The side wall of the nozzle is arranged in a circular pattern and fixedly connected to the side wall of the second connecting ring.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the movement of the first slider drives the first rotating plate and the second rotating plate on the inner wall to rotate, which in turn drives the internal fixed column and the first connecting plate to converge. At the same time, it drives the second slider to slide inside the second slide rail, and at the same time, it causes the first connecting ring to converge. Then, the outer wall of the rotating wheel is pressed against the inside of the steel pipe, which achieves the effect of assisting in clamping the steel pipe. This solves the problem of uneven heating caused by the lateral displacement of the steel pipe on the roller conveyor due to inertia, vibration or thermal deformation, and improves the stability of the multi-compartment continuous heating device for steel pipe heat treatment.

[0025] 2. In this utility model, the third support plate is moved by the second cylinder. The movement of the third support plate will cause the internal rotating column and umbrella plate to rotate. Then, the umbrella plate will drive the second connecting ring and nozzle on the side wall to move. At the same time, the umbrella plate rotates through the third rotating plate, and the third rotating plate is limited by the second support plate. This achieves a multi-stage spray quenching effect, solves the problem that the lack of multi-stage spray quenching makes it impossible to apply different quenching methods, and improves the versatility of multi-compartment continuous heating devices for steel pipe heat treatment. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a multi-compartment continuous heating device for heat treatment of steel pipes proposed in this utility model;

[0027] Figure 2 This is a schematic cross-sectional view of the protective shell structure of a multi-compartment continuous heating device for heat treatment of steel pipes proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the top structure of the protective shell of a multi-compartment continuous heating device for heat treatment of steel pipes proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the protective shell sidewall structure of a multi-compartment continuous heating device for heat treatment of steel pipes proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the protective shell sidewall structure of a multi-compartment continuous heating device for heat treatment of steel pipes proposed in this utility model.

[0031] Legend:

[0032] 1. Roller conveyor; 2. Protective shell; 3. Heating tube; 4. First support plate; 5. First cylinder; 6. First slider; 7. First slide rail; 8. First rotating plate; 9. Second rotating plate; 10. Second slider; 11. Second slide rail; 12. Fixed column; 13. First connecting plate; 14. First connecting ring; 15. Second connecting plate; 16. Rotating wheel; 17. Second fixed plate; 18. Water pump; 19. First connecting pipe; 20. Second connecting pipe; 21. Rotating column; 22. Umbrella plate; 23. Second connecting ring; 24. Nozzle; 25. Third rotating plate; 26. Second support plate; 27. Second cylinder; 28. Third support plate. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1-4 An embodiment of this utility model is provided: a multi-compartment continuous heating device for heat treatment of steel pipes, including a roller conveyor 1, a protective shell 2 fixedly connected to the top of the roller conveyor 1, a heating tube 3 fixedly connected inside the protective shell 2, a first support plate 4 fixedly connected to the top of the protective shell 2, a first cylinder 5 fixedly connected to the inner wall of the first support plate 4, a first slider 6 fixedly connected to the output end of the first cylinder 5, a first slide rail 7 slidably connected to the bottom of the first slider 6, and a gathering component provided on the inner wall of the first slider 6;

[0035] The converging assembly includes a first rotating plate 8 and a second rotating plate 9. The first rotating plate 8, in conjunction with the second rotating plate 9, performs a rotating converging motion. Through the fixed column 12, the first connecting plate 13 and the first connecting ring 14 contract synchronously, achieving a multi-point clamping effect on the inner wall of the steel pipe. This prevents the steel pipe from shifting due to inertia or thermal deformation during heating, ensuring uniform heating. The bottoms of both the first rotating plate 8 and the second rotating plate 9 are rotatably connected to the inner wall of the first slider 6. Fixed columns 12 are fixedly connected inside both the first rotating plate 8 and the second rotating plate 9. The bottom of the fixed column 12 is fixedly connected to the first connecting plate 13. The side wall of the first connecting plate 13 is fixedly connected to the first connecting ring 14, and a support assembly is provided on the side wall of the first connecting ring 14. Both the outer walls of the rotating plate 8 and the second rotating plate 9 are provided with sliding components. The support components include a second connecting plate 15. The side wall of the second connecting plate 15 is fixedly connected to the side wall of the first connecting ring 14. The inner wall of the second connecting plate 15 is rotatably connected to a rotating wheel 16. The sliding components include a second slider 10. The second slider 10 cooperates with the second slide rail 11 to slide linearly, providing a guiding and limiting function for the rotational movement of the first rotating plate 8 and the second rotating plate 9, ensuring the stability of the gathering action. Further details are omitted here. The side walls of the second slider 10 are fixedly connected to the outer walls of the first rotating plate 8 and the second rotating plate 9. The side walls of the second slider 10 are slidably connected to the second slide rail 11. The bottom of the second slide rail 11 is fixedly connected to the top of one of the protective shells 2.

[0036] Reference Figure 1 and Figure 5 A second fixing plate 17 is fixedly connected to the side wall of the protective shell 2. A water pump 18 is fixedly connected inside the second fixing plate 17. The water pump 18, the first connecting pipe 19, and the second connecting pipe 20 form a quenching medium conveying system, which is used to convey the quenching medium to the nozzle 24 to achieve spray quenching of the steel pipe. This is existing technology and will not be described in detail here. The output end of the water pump 18 is fixedly connected to the second connecting pipe 20, and the input end of the water pump 18 is fixedly connected to the first connecting pipe 19. A second cylinder 27 is fixedly connected to the side wall of the protective shell 2. A third support plate 28 is fixedly connected to the output end of the second cylinder 27. A rotating column 21 is rotatably connected to the inner wall of the third support plate 28. One end of the rotating column 21 is fixedly connected to the first connecting pipe 19. At one end of the rotating column 21, an umbrella-shaped plate 22 is fixedly connected. The umbrella-shaped plate 22 rotates in conjunction with the third rotating plate 25 and the second support plate 26, changing the linear motion of the umbrella-shaped plate 22 into a circular motion, thereby realizing the flexible adjustment of the position and angle of the nozzle 24 and achieving the effect of multi-stage spray quenching. The side wall of the umbrella-shaped plate 22 is fixedly connected to the third rotating plate 25, and the side wall of the third rotating plate 25 is rotatably connected to the second support plate 26. The side wall of the second support plate 26 is fixedly connected to the side wall of the protective shell 2. The side wall of the umbrella-shaped plate 22 is fixedly connected to the second connecting ring 23, and the side wall of the second connecting ring 23 is fixedly connected to the nozzle 24. The side wall of the nozzle 24 is arranged in a circular pattern and fixedly connected to the side wall of the second connecting ring 23.

[0037] Working Principle: When using the multi-compartment continuous heating device for steel pipe heat treatment, the roller conveyor 1 transports the steel pipe into the protective shell 2, and the heating tube 3 heats the steel pipe. When auxiliary clamping of the steel pipe is required, the first cylinder 5 is activated, and its output end pushes the first slider 6 to slide along the first slide rail 7. During the movement of the first slider 6, it drives the first rotating plate 8 and the second rotating plate 9 on the inner wall to rotate, thereby causing the internal fixed column 12 and the first connecting plate 13 to move together and converge, and the first connecting ring 14 converges accordingly. At the same time, the second slider 10 on the outer wall of the first rotating plate 8 and the second rotating plate 9 slides in the second slide rail 11, which guides and limits the rotation. Then, during the process of the first connecting ring 14 being stressed, it drives the inner wall of the second connecting plate 15 to move, which in turn causes the rotating wheel 16 to fit against the inner wall of the steel pipe, thereby achieving auxiliary clamping of the steel pipe and preventing the steel pipe from shifting laterally due to inertia, vibration or thermal deformation, ensuring heating uniformity and improving the stability of the device.

[0038] During the quenching operation, the second cylinder 27 drives the third support plate 28 to move. The third support plate 28 drives the internal rotating column 21 and umbrella-shaped plate 22 to rotate. At the same time, during the rotation of the umbrella-shaped plate 22, on the one hand, it drives the second connecting ring 23 on the side wall and the circularly arranged nozzles 24 to move, adjusting the spray position and angle. On the other hand, the umbrella-shaped plate 22 rotates through the third rotating plate 25, and the third rotating plate 25 is limited by the second support plate 26 to ensure rotational stability and change the linear motion of the umbrella-shaped plate 22 into circular motion. Meanwhile, the water pump 18 delivers the quenching medium through the first connecting pipe 19 and the second connecting pipe 20, which is sprayed out through the nozzles 24 to realize multi-stage spray quenching, meet the quenching requirements of different processes, and enrich the functional diversity of the device.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 multi-compartment continuous heating device for heat treatment of steel pipes, comprising a roller conveyor (1), characterized in that: The roller conveyor (1) is fixedly connected to a protective shell (2) at the top. A heating tube (3) is fixedly connected inside the protective shell (2). A first support plate (4) is fixedly connected to the top of the protective shell (2). A first cylinder (5) is fixedly connected to the inner wall of the first support plate (4). A first slider (6) is fixedly connected to the output end of the first cylinder (5). A first slide rail (7) is slidably connected to the bottom of the first slider (6). A gathering component is provided on the inner wall of the first slider (6). The gathering component includes a first rotating plate (8) and a second rotating plate (9). The bottom of the first rotating plate (8) and the second rotating plate (9) are rotatably connected to the inner wall of the first slider (6). The first rotating plate (8) and the second rotating plate (9) are both fixedly connected to a fixing column (12). The bottom of the fixing column (12) is fixedly connected to a first connecting plate (13). The side wall of the first connecting plate (13) is fixedly connected to a first connecting ring (14). The side wall of the first connecting ring (14) is provided with a support component. The outer walls of the first rotating plate (8) and the second rotating plate (9) are both provided with sliding components.

2. The multi-compartment continuous heating device for heat treatment of steel pipes according to claim 1, characterized in that: The support assembly includes a second connecting plate (15), the side wall of the second connecting plate (15) is fixedly connected to the side wall of the first connecting ring (14), and a rotating wheel (16) is rotatably connected to the inner wall of the second connecting plate (15).

3. The multi-compartment continuous heating device for heat treatment of steel pipes according to claim 1, characterized in that: The sliding assembly includes a second slider (10), the sidewalls of which are fixedly connected to the outer walls of the first rotating plate (8) and the second rotating plate (9), and the sidewalls of the second slider (10) are slidably connected to a second slide rail (11), the bottom of which is fixedly connected to the top of one of the protective shells (2).

4. The multi-compartment continuous heating device for heat treatment of steel pipes according to claim 1, characterized in that: The protective shell (2) is fixedly connected to a second fixing plate (17) on its side wall. A water pump (18) is fixedly connected inside the second fixing plate (17). A second connecting pipe (20) is fixedly connected to the output end of the water pump (18). A first connecting pipe (19) is fixedly connected to the input end of the water pump (18). A second cylinder (27) is fixedly connected to the side wall of the protective shell (2). A third support plate (28) is fixedly connected to the output end of the second cylinder (27).

5. A multi-compartment continuous heating device for heat treatment of steel pipes according to claim 4, characterized in that: The inner wall of the third support plate (28) is rotatably connected to a rotating column (21), one end of which is fixedly connected to one end of the first connecting pipe (19).

6. A multi-compartment continuous heating device for heat treatment of steel pipes according to claim 5, characterized in that: One end of the rotating column (21) is fixedly connected to an umbrella-shaped plate (22), and a third rotating plate (25) is fixedly connected to the side wall of the umbrella-shaped plate (22).

7. A multi-compartment continuous heating device for heat treatment of steel pipes according to claim 6, characterized in that: The third rotating plate (25) is rotatably connected to the side wall of the second support plate (26), and the side wall of the second support plate (26) is fixedly connected to the side wall of the protective shell (2).

8. A multi-compartment continuous heating device for heat treatment of steel pipes according to claim 7, characterized in that: The umbrella-shaped plate (22) is fixedly connected to a second connecting ring (23) on its side wall, and a nozzle (24) is fixedly connected to the side wall of the second connecting ring (23). The nozzle (24) is arranged in a circular pattern and fixedly connected to the side wall of the second connecting ring (23).

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