Liquid-cooled discharge furnace mouth of heat treatment furnace

Abstract

The utility model belongs to the technical field of strip steel post-treatment equipment, and relates to a liquid-cooled discharge furnace mouth of a heat treatment furnace, which comprises a base, and a cooling station is arranged at the top of the base; the cooling station comprises a supporting plate, a first cooling module, a second cooling module and supporting columns, the lower ends of the supporting columns are jointly fixed to the base, and the upper ends of the supporting columns are jointly and fixedly connected to the supporting plate; the first cooling module and the second cooling module are arranged below the supporting plate. A hydraulic cylinder is arranged at the top of the supporting plate, and a first cooling module is connected below the hydraulic cylinder; a first cooling cavity and a second cooling cavity are formed in the first cooling module, and the first cooling cavity is located above the second cooling cavity. A liquid inlet I and a liquid outlet I are formed in the cooling cavity I; a liquid inlet II is formed in the cooling cavity II; a third cooling cavity and a fourth cooling cavity are formed in the second cooling module, and the third cooling cavity is located above the fourth cooling cavity; a liquid inlet III is formed in the cooling cavity III; and a fourth liquid inlet and a fourth liquid outlet are formed in the fourth cooling cavity.

Description

Technical Field

[0001] This utility model belongs to the technical field of strip steel post-processing equipment, specifically relating to a liquid-cooled discharge port of a heat treatment furnace. Background Technology

[0002] Steel strip is a thin and wide steel material (typically 0.1~6mm thick) widely used in automobiles, home appliances, construction and other fields. Its heat treatment process aims to optimize the microstructure and mechanical properties (such as strength, plasticity, hardness, etc.) of the material by controlling the heating, holding and cooling processes, while improving processing performance (such as stamping, welding) and surface quality.

[0003] Cooling is a crucial step in the heat treatment process of strip steel. The necessity of cooling includes: 1. Promoting microstructure transformation: By controlling the cooling rate, austenite transforms into a fine ferrite-pearlite structure, refining the grains and eliminating banded structures or network carbides; 2. Enhancing performance: The cooling process determines the strength, toughness, and hardness of the material. Skipping cooling may result in coarse grains or residual stress, leading to substandard mechanical properties.

[0004] Installing a cooling device at the furnace opening of a heat treatment furnace is a common practice. This device allows the hot steel strip to cool down relatively quickly. Conventional cooling devices typically employ a single-chamber structure, with a circulating coolant flowing through each chamber.

[0005] The single-chamber structure has significant drawbacks. The temperature near the liquid inlet of the single chamber is significantly lower than that at other locations, resulting in uneven temperature distribution at the heat exchange surface of the cooling device. The presence of this uneven temperature region may lead to differences in the physicochemical properties of the product at different locations.

[0006] In order to overcome the shortcomings of single-chamber cooling structures, this invention aims to provide a liquid-cooled discharge port for a heat treatment furnace, which has a dual-chamber structure. Utility Model Content

[0007] The purpose of this invention is to provide a liquid-cooled discharge port for a heat treatment furnace to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A liquid-cooled discharge port of a heat treatment furnace includes a base, the top of which is provided with a cooling station; the cooling station includes a support plate, a first cooling module, a second cooling module, and several support columns, the lower ends of which are fixed to the base, and the upper ends of which are fixedly connected to the support plate; the first and second cooling modules are arranged sequentially from top to bottom below the support plate; the top of the support plate is provided with several hydraulic cylinders, the lower part of which is connected to the first cooling module, and the several hydraulic cylinders jointly drive the first cooling module to move up and down; the second cooling module is fixedly connected to the base.

[0010] The cooling module 1 has a cooling chamber 1 and a cooling chamber 2 inside, which are relatively independent of each other. The cooling chamber 1 is located above the cooling chamber 2. The cooling chamber 1 has a liquid inlet 1 and a liquid outlet 1. The cooling chamber 2 has a liquid inlet 2.

[0011] The cooling module 2 has a cooling chamber 3 and a cooling chamber 4 inside. The cooling chamber 3 and the cooling chamber 4 are relatively independent of each other. The cooling chamber 3 is located above the cooling chamber 4. The cooling chamber 3 is provided with a liquid inlet 3. The cooling chamber 4 is provided with a liquid inlet 4 and a liquid outlet 4.

[0012] Preferably, the first cooling chamber is a serpentine cavity, and its two ends are connected to the first liquid inlet and the first liquid outlet, respectively.

[0013] Preferably, the cooling chamber four is a serpentine cavity, and the two ends of the cooling chamber four are connected to the liquid inlet four and the liquid outlet four, respectively.

[0014] Preferably, a liquid storage cylinder is provided at the two liquid inlets, and the inner wall of the liquid storage cylinder is provided with scale lines.

[0015] Preferably, the three liquid inlets are provided with a liquid storage cylinder II, and the inner wall of the liquid storage cylinder II is provided with scale lines.

[0016] Preferably, the cooling module one has several fixed sliding grooves one on its side wall, and the several supporting columns are embedded in the several fixed sliding grooves one in a corresponding manner; the cooling module two has several fixed sliding grooves two on its side wall, and the several supporting columns are embedded in the several fixed sliding grooves two in a corresponding manner.

[0017] Preferably, the bottom surface of the first cooling module is provided with friction steel wire cloth, and the top surface of the second cooling module is provided with friction steel wire cloth.

[0018] Preferably, two baffles are provided on the front side of the cooling module one and the cooling module two.

[0019] Preferably, a guide post is provided at the front of the base.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] (1) The present invention provides a liquid-cooled discharge port of a heat treatment furnace. The cooling module 1 is provided with a cooling chamber 1 and a cooling chamber 2. The cooling chamber 2 contains silicone oil and the cooling chamber 1 contains circulating coolant. The cooling chamber 2 is located between the cooling chamber 1 and the strip steel. The silicone oil in the cooling chamber 2 can act as a buffer. The silicone oil and the strip steel complete heat exchange. At the same time, the silicone oil and the coolant complete heat exchange. The presence of the coolant in the cooling chamber 2 can greatly improve the uniformity and stability of the temperature. The cooling module 2 is provided with a cooling chamber 3 and a cooling chamber 4. The cooling chamber 3 contains silicone oil and the cooling chamber 4 contains circulating coolant. The structural design of the cooling module 2 is the same as that of the cooling module 1.

[0022] (2) The liquid-cooled discharge port of the heat treatment furnace provided by this utility model has a serpentine cavity in both cooling chamber one and cooling chamber four. The serpentine cavity can greatly improve the heat exchange area.

[0023] (3) The present invention provides a liquid-cooled discharge port of a heat treatment furnace, wherein a liquid storage cylinder is connected to the second cooling chamber and a liquid storage cylinder is connected to the third cooling chamber. The liquid storage cylinders one and two can be used to add coolant. The liquid storage cylinders one and two can ensure that the second and third cooling chambers are filled with coolant. At the same time, the liquid storage cylinders one and two can provide expansion buffer space for the coolant. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the structure of cooling module one and cooling module two of this utility model. Figure 1 ;

[0027] Figure 4 This is a schematic diagram of the structure of cooling module one and cooling module two of this utility model. Figure 2 ;

[0028] Figure 5 This is a cross-sectional structural diagram of cooling module one and cooling module two of this utility model;

[0029] Figure 6 This is a cross-sectional structural diagram of cooling chamber one or cooling chamber two of this utility model;

[0030] In the diagram: 1. Base; 2. Support plate; 3. Cooling module one; 4. Cooling module two; 5. Support column; 6. Hydraulic cylinder; 7. Fixed slide groove one; 8. Fixed slide groove two; 9. Cooling chamber one; 10. Cooling chamber two; 11. Liquid inlet one; 12. Liquid outlet one; 13. Liquid inlet two; 14. Liquid storage cylinder one; 15. Scale line; 16. Cooling module two; 17. Cooling chamber three; 18. Cooling chamber four; 19. Liquid inlet four; 20. Liquid outlet four; 21. Liquid inlet three; 22. Liquid storage cylinder two; 23. Steel wire cloth; 24. Baffle; 25. Guide column. Detailed Implementation

[0031] 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.

[0032] A liquid-cooled discharge port of a heat treatment furnace includes a base 1, with a cooling station on top of the base 1. The cooling station is used for rapid cooling of the strip steel.

[0033] The cooling station includes a support plate 2, a first cooling module 3, a second cooling module 4, and four support columns 5. The four support columns 5 are arranged in a rectangular array, with their lower ends fixed to the base 1. The upper ends of the four support columns 5 are fixedly connected to the support plate 5, and five hydraulic cylinders 6 are mounted on the top of the support plate 5. The first cooling module 3 and the second cooling module 4 are positioned below the support plate 5 from top to bottom, with the first cooling module 3 connected to the bottom of the five hydraulic cylinders 6. The five hydraulic cylinders 6 operate simultaneously, enabling the lifting and lowering of the first cooling module 3. The second cooling module 4 is fixedly connected to the base 1 and remains stationary during device operation. The side wall of the first cooling module 3 has four fixed grooves 7, with each of the four support columns 5 correspondingly embedded in one of these grooves. This design significantly improves the stability of the first cooling module 3 during lifting and lowering. The side wall of the second cooling module 4 has four fixed grooves 8, with each of the four support columns 5 correspondingly embedded in one of these grooves.

[0034] Cooling module 3 has two internal cooling chambers: cooling chamber 9 and cooling chamber 10. Cooling chamber 9 and cooling chamber 10 are relatively independent, with cooling chamber 9 located above cooling chamber 10. Liquid exchange between them is not possible. Cooling chamber 9 has an inlet 11 and an outlet 12. Coolant is introduced through inlet 11 and withdrawn through outlet 12. The circulation of coolant creates a hot-cold cycle within cooling chamber 9. To increase the heat exchange area of ​​cooling chamber 9, it has a serpentine shape, with its two ends connected to inlet 11 and outlet 12, respectively. Cooling chamber 10 has an inlet 13, and a reservoir 14 is located at inlet 13. Cooling silicone oil is added to reservoir 14. Silicone oil is injected into cooling chamber 10 through reservoir 14 until it reaches the scale line 15 on the inner wall of reservoir 14. The liquid storage tank 14 allows the cooling chamber 2 10 to be filled with silicone oil, while also providing a buffer space for the silicone oil to expand.

[0035] Cooling module 2 16 has two internal cooling chambers: cooling chamber 3 17 and cooling chamber 4 18. These two chambers are relatively independent, with cooling chamber 3 17 located above cooling chamber 4 18. Liquid exchange between them is not possible. Cooling chamber 4 18 has an inlet 4 19 and an outlet 4 20. Coolant is introduced through inlet 4 19 and withdrawn through outlet 4 20. The circulation of coolant creates a hot-cold cycle within cooling chamber 4 18. To increase the heat exchange area of ​​cooling chamber 4 18, it has a serpentine shape, with both ends connected to inlet 4 19 and outlet 4 20, respectively. Cooling chamber 3 17 has an inlet 3 21, and a reservoir 2 22 is located at inlet 3 21. Cooling silicone oil is added from reservoir 2 22. Silicone oil is injected into cooling chamber 3 17 through reservoir 22 until it reaches the scale line 15 on the inner wall of reservoir 22. The reservoir 22 is designed to ensure that cooling chamber 3 17 is filled with silicone oil and to provide buffer space for the silicone oil to expand.

[0036] To increase the heat exchange area between cooling module 1 (3), cooling module 2 (16) and the strip steel, steel wire cloth 23 is provided on the bottom surface of cooling module 1 (3) and the top surface of cooling module 2 (16). The steel wire cloth 23 is woven from stainless steel wire, possessing good flexibility and effectively clamping into contact with the strip steel, thus increasing the heat exchange area. To prevent the strip steel from deviating during operation, two baffles 24 are provided at the front of cooling module 1 (3) and cooling module 2 (16), and guide posts 25 are provided at the front of the base 1.

[0037] During operation, the operator injects silicone oil into cooling chambers 2 (10) and 3 (17), while simultaneously activating coolant circulation in cooling chambers 1 (9) and 4 (18). The operator then guides the strip steel through cooling modules 1 (3) and 2 (16), with module 1 (3) pressing down. These modules clamp the strip steel, and the strip's general-purpose steel wire cloth (23) exchanges heat with both modules. During this heat exchange, the strip steel passes smoothly. The coolant, at a lower temperature, exchanges heat with the silicone oil, while the silicone oil exchanges heat with the strip steel, effectively improving the temperature uniformity and stability of the silicone oil.

[0038] 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 liquid-cooled discharge port of a heat treatment furnace, characterized in that: The system includes a base, with a cooling station on its top. The cooling station comprises a support plate, a first cooling module, a second cooling module, and several support columns. The lower ends of the support columns are fixed to the base, and the upper ends are fixedly connected to the support plate. The first and second cooling modules are arranged sequentially below the support plate from top to bottom. Several hydraulic cylinders are located on the top of the support plate, with the first cooling module connected below each cylinder. The hydraulic cylinders collectively drive the first cooling module to move up and down. The second cooling module is fixedly connected to the base. The cooling module 1 has a cooling chamber 1 and a cooling chamber 2 inside, which are relatively independent of each other. The cooling chamber 1 is located above the cooling chamber 2. The cooling chamber 1 has a liquid inlet 1 and a liquid outlet 1. The cooling chamber 2 has a liquid inlet 2. The cooling module 2 has a cooling chamber 3 and a cooling chamber 4 inside. The cooling chamber 3 and the cooling chamber 4 are relatively independent of each other. The cooling chamber 3 is located above the cooling chamber 4. The cooling chamber 3 is provided with a liquid inlet 3. The cooling chamber 4 is provided with a liquid inlet 4 and a liquid outlet 4.

2. The liquid-cooled discharge port of a heat treatment furnace according to claim 1, characterized in that: The first cooling chamber is a serpentine cavity, and its two ends are connected to the first liquid inlet and the first liquid outlet, respectively.

3. The liquid-cooled discharge port of a heat treatment furnace according to claim 1, characterized in that: The fourth cooling chamber is a serpentine cavity, and its two ends are connected to the fourth liquid inlet and the fourth liquid outlet, respectively.

4. The liquid-cooled discharge port of a heat treatment furnace according to claim 1, characterized in that: A liquid storage cylinder is provided at the two liquid inlets, and the inner wall of the liquid storage cylinder is provided with scale lines.

5. The liquid-cooled discharge port of a heat treatment furnace according to claim 1, characterized in that: The liquid inlet has three liquid storage cylinders, and the inner wall of the liquid storage cylinders has scale lines.

6. The liquid-cooled discharge port of a heat treatment furnace according to claim 1, characterized in that: The cooling module one has several fixed sliding grooves on its side wall, and the several supporting columns are embedded in the several fixed sliding grooves one by one; the cooling module two has several fixed sliding grooves on its side wall, and the several supporting columns are embedded in the several fixed sliding grooves two by one.

7. The liquid-cooled discharge port of a heat treatment furnace according to claim 1, characterized in that: The bottom surface of the first cooling module is provided with friction steel wire cloth, and the top surface of the second cooling module is provided with friction steel wire cloth.

8. The liquid-cooled discharge port of a heat treatment furnace according to claim 1, characterized in that: Two baffles are provided on the front side of the cooling module one and the cooling module two.

9. The liquid-cooled discharge port of a heat treatment furnace according to claim 1, characterized in that: A guide post is provided at the front of the base.

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