Quenching line cooling device
By setting up symmetrical air-cooled box components and heat-conducting layers in the steel belt conveying area, the steel belt is able to be cooled slowly and then rapidly cooled, which solves the problem of high brittleness of the steel belt after rapid cooling and improves its wear resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN XUEMING METAL PROD CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-19
AI Technical Summary
Existing steel strips become highly brittle after rapid cooling, resulting in reduced wear resistance. Furthermore, existing air-cooling methods cannot achieve rapid cooling after slow cooling to improve wear resistance.
The system employs a first and second air-cooled box assembly symmetrically distributed vertically. It utilizes a heat-conducting layer to hold the steel strip and indirectly transfers heat through cold air, avoiding direct contact between the cold air and the steel strip, thus achieving slow cooling followed by rapid cooling.
The wear resistance of the steel strip is improved, and the cooling rate is controlled by indirect cooling, avoiding the brittleness problem caused by direct contact.
Smart Images
Figure CN224258715U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal strip processing technology, specifically, a quenching line cooling device. Background Technology
[0002] Steel strip, also known as strip steel, is produced by heating steel strip in a furnace, and then outputting and cooling the heated steel strip to improve its wear resistance.
[0003] Existing steel strips are usually cooled rapidly by water after being output from the heating furnace. However, after rapid cooling, the steel strips become relatively brittle and their wear resistance decreases. Therefore, it is necessary to slowly cool the steel strips before the rapid cooling section, so that the steel strips are cooled to a certain temperature before rapid cooling. This can greatly improve their wear resistance.
[0004] However, existing slow cooling sections typically use air cooling, where cold air is directly blown onto the product surface for heat exchange. But the steel strip is relatively thin, and the direct blowing of cold air still causes the steel strip to cool down rapidly after it comes out of the heating furnace. This makes it difficult for the steel strip to achieve the effect of improving wear resistance by slow cooling followed by rapid cooling. Utility Model Content
[0005] In order to overcome the defects of the existing technology, this utility model provides a quenching line cooling device, which aims to solve the problems in the existing technology.
[0006] The technical solution adopted by this utility model to solve its technical problem is: a quenching line cooling device, including a body, a first air-cooled box assembly installed on the body, a second air-cooled box assembly arranged above the first air-cooled box assembly, the second air-cooled box assembly being vertically and vertically mounted on the body, the first air-cooled box assembly and the second air-cooled box assembly being symmetrically distributed vertically, a steel belt conveying area being formed between the first air-cooled box assembly and the second air-cooled box assembly, and a heat-conducting layer being provided on the side of the first air-cooled box assembly and the second air-cooled box assembly facing each other.
[0007] In the above-mentioned quenching line cooling device, both the first air-cooled box assembly and the second air-cooled box assembly include a box body. One end of the box body is provided with an air inlet and the other end is provided with an air outlet. The heat-conducting layer is provided on the box body. Multiple fins are provided inside the box body. An air duct is formed between two adjacent fins. The air duct is connected to the air inlet and the air outlet respectively.
[0008] In the aforementioned quenching line cooling device, multiple fins are inclinedly arranged inside the housing.
[0009] In the above-mentioned quenching line cooling device, suspensions are installed on both sides of the machine body, and a connecting frame is elastically connected to the upper end of the second air-cooled box assembly. The upper end of the connecting frame is connected to the suspensions through a cylinder.
[0010] In the above-mentioned quenching line cooling device, a connecting ear is installed on the connecting frame, and a guide rod installed on the upper end of the second air-cooled box assembly is inserted through the connecting ear. A limit end is provided at the upper end of the guide rod. A spring is provided between the connecting ear and the second air-cooled box assembly. One end of the spring abuts against the second air-cooled box assembly, and the other end abuts against the lower end face of the connecting ear.
[0011] In the above-mentioned quenching line cooling device, a nut seat is also provided on the upper end face of the second air-cooled box assembly, and a handwheel is provided on the connecting frame. The handwheel is threadedly connected to the nut seat through a screw.
[0012] The beneficial effect of this utility model is that by pressing down the second cold air box assembly, the steel strip output from the heating furnace is sandwiched between two heat-conducting layers. The heat is transferred to the first and second air-cooling box assemblies through the heat-conducting layers. The cold air is used to expel the temperature inside the first and second air-cooling box assemblies, so that the cold air does not directly contact the steel strip for heat transfer. This allows the steel strip to be slowly cooled between the first and second air-cooling box assemblies, so as to facilitate subsequent rapid cooling, thereby improving the wear resistance of the steel strip. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the quenching line cooling device in this embodiment.
[0014] Figure 2 This is a three-dimensional structural diagram of the second air-cooled box assembly in this embodiment.
[0015] Figure 3 This is a schematic diagram of the internal structure of the box in this embodiment.
[0016] Figure 4 for Figure 1 A magnified structural diagram of point A in the middle.
[0017] In the diagram: 1. Body; 2. First air-cooled box assembly; 3. Suspension; 4. Connecting frame; 5. Second air-cooled box assembly; 6. Cylinder; 7. Handwheel; 8. Box body; 9. Air inlet; 10. Air outlet; 11. Heat-conducting layer; 12. Guide rod; 13. Nut seat; 14. Fin; 15. Air duct; 16. Connecting ear; 17. Limiting end; 18. Spring. Detailed Implementation
[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0019] Combination Figures 1 to 4 The quenching line cooling device shown includes a body 1, on which a first air-cooling box assembly 2 is mounted. A second air-cooling box assembly 5 is disposed above the first air-cooling box assembly 2. The second air-cooling box assembly 5 is vertically and flexibly mounted on the body 1. The first air-cooling box assembly 2 and the second air-cooling box assembly 5 are symmetrically distributed vertically, forming a steel strip conveying area between them. A heat-conducting layer 11 is disposed on one side of the first air-cooling box assembly 2 and the second air-cooling box assembly 5 facing each other. In this embodiment, the second air-cooling box assembly 5 is pressed down, causing the two heat-conducting layers 11 to clamp the steel strip output from the heating furnace. Heat is transferred to the first air-cooling box assembly 2 and the second air-cooling box assembly 5 through the heat-conducting layers 11. The cold air is used to expel the temperature inside the first air-cooling box assembly 2 and the second air-cooling box assembly 5, so that the cold air does not directly contact the steel strip for heat transfer. This allows the steel strip to be slowly cooled between the first air-cooling box assembly 2 and the second air-cooling box assembly 5, facilitating subsequent rapid cooling and improving the wear resistance of the steel strip.
[0020] Specifically, in this embodiment, both the first air-cooled box assembly 2 and the second air-cooled box assembly 5 include a box body 8. One end of the box body 8 is provided with an air inlet 9, and the other end is provided with an air outlet 10. A heat-conducting layer 11 is provided on the box body 8. Multiple fins 14 are provided inside the box body 8, and an air duct 15 is formed between two adjacent fins 14. The air duct 15 is connected to the air inlet 9 and the air outlet 10 respectively. The heat-conducting layer 11 can be made of graphite sheet. The air inlet 9 is used to connect to a blower. The blower blows air into the box body 8. Since the heat-conducting layer 11 transfers heat to the box body 8, the box body 8 exchanges heat through the multiple fins 14. Then, the cold air exchanges heat with the fins 14, thereby reducing the temperature of the box body 8. The hot air is discharged from the air outlet 10, so that the cold air will not directly contact the steel belt for cooling, thereby slowing down the cooling rate.
[0021] It is worth noting that in this embodiment, the multiple fins 14 are inclinedly arranged inside the housing 8, which accelerates the airflow in the air duct 15 and prevents the housing 8 from accumulating too much heat.
[0022] In this embodiment, suspensions 3 are installed on both sides of the body 1, and a connecting frame 4 is elastically connected to the upper end of the second air-cooled box assembly 5. The upper end of the connecting frame 4 is connected to the suspension 3 through a cylinder 6. The second air-cooled box assembly 5 is lifted and lowered by the cylinder 6, so that the steel belt can be pressed into the steel belt conveying area for conveying.
[0023] Specifically, in this embodiment, connecting ears 16 are installed at the four corners of the connecting frame 4. A guide rod 12 installed on the upper end of the second air-cooled box assembly 5 is inserted through the connecting ear 16. A limit end 17 is provided at the upper end of the guide rod 12 to prevent the guide rod 12 from slipping off the connecting ear 16. A spring 18 is provided between the connecting ear 16 and the second air-cooled box assembly 5. One end of the spring 18 abuts against the second air-cooled box assembly 5, and the other end abuts against the lower end face of the connecting ear 16. When the second air-cooled box assembly 5 is pressed down, after the second air-cooled box assembly 5 contacts the steel strip, the second air-cooled box assembly 5 can have an elastic effect under the action of the spring 18, preventing the second air-cooled box assembly 5 from being under too much pressure.
[0024] It is also worth noting that the upper surface of the second air-cooled box assembly 5 in this embodiment is provided with two nut seats 13, and the connecting frame 4 is provided with two handwheels 7. Both handwheels 7 are threadedly connected to the corresponding nut seats 13 by screws. The second air-cooled box assembly 5 can be finely adjusted in position by rotating the handwheels 7 to accommodate steel strips of different thicknesses.
[0025] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. A quenching line cooling device, comprising a body (1), characterized in that, The body (1) is equipped with a first air-cooled box assembly (2), and a second air-cooled box assembly (5) is provided above the first air-cooled box assembly (2). The second air-cooled box assembly (5) is installed on the body (1) in a liftable manner. The first air-cooled box assembly (2) and the second air-cooled box assembly (5) are symmetrically distributed vertically. A steel belt conveying area is formed between the first air-cooled box assembly (2) and the second air-cooled box assembly (5). A heat-conducting layer (11) is provided on the side of the first air-cooled box assembly (2) and the second air-cooled box assembly (5) facing each other.
2. The quenching line cooling device according to claim 1, characterized in that, The first air-cooled box assembly (2) and the second air-cooled box assembly (5) both include a box body (8). One end of the box body (8) is provided with an air inlet (9) and the other end is provided with an air outlet (10). The heat-conducting layer (11) is provided on the box body (8). Multiple fins (14) are provided inside the box body (8). An air duct (15) is formed between two adjacent fins (14). The air duct (15) is connected to the air inlet (9) and the air outlet (10) respectively.
3. The quenching line cooling device according to claim 2, characterized in that, Multiple fins (14) are inclinedly arranged inside the housing (8).
4. The quenching line cooling device according to claim 1, characterized in that, Suspension (3) is installed on both sides of the body (1), and a connecting frame (4) is elastically connected to the upper end of the second air-cooled box assembly (5). The upper end of the connecting frame (4) is connected to the suspension (3) through a cylinder (6).
5. A quenching line cooling device according to claim 4, characterized in that, A connecting ear (16) is installed on the connecting frame (4). A guide rod (12) installed on the upper end of the second air-cooled box assembly (5) is inserted through the connecting ear (16). A limit end (17) is provided at the upper end of the guide rod (12). A spring (18) is provided between the connecting ear (16) and the second air-cooled box assembly (5). One end of the spring (18) abuts against the second air-cooled box assembly (5), and the other end abuts against the lower end face of the connecting ear (16).
6. A quenching line cooling device according to claim 5, characterized in that, The upper end face of the second air-cooled box assembly (5) is also provided with a nut seat (13), and a handwheel (7) is provided on the connecting frame (4). The handwheel (7) is threadedly connected to the nut seat (13) by a screw.