Round billet profile continuous casting secondary cooling device

Abstract

The utility model relates to the technical field of round billet continuous casting, in particular to a round billet profile continuous casting secondary cooling device which comprises a machine frame, a first spraying assembly is arranged at the lower end of the machine frame through a connecting pipe, and a second spraying assembly and two third spraying assemblies are connected and installed on the machine frame through telescopic hoses. The air cylinder drives the second spraying assembly to carry out height adjustment, the second spraying assembly drives the rotating shaft to rotate through meshing connection of the driving rack and the driven gear, the rotating shaft drives the third spraying assembly to carry out angle deflection through the connecting plate, and therefore the third spraying assembly can carry out angle deflection on round billet profiles with different widths. Compared with the prior art that each corner of the bottom end of the round billet profile cannot be cooled by a rotationally arranged nozzle group, the round billet profile is sprayed and cooled by the first spraying assembly, the second spraying assembly and the third spraying assembly in the technical scheme, so that the cooling effect of the device on the round billet profile is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of round billet continuous casting, in particular to a secondary cooling device for round billet section continuous casting. Background Art

[0002] Round billet continuous casting refers to a continuous steel casting and ironmaking technology mainly used for producing billets for seamless steel pipes. The continuous casting round billets are mainly used for producing seamless steel pipes with different calibers. When piercing the round billets into pipes, it is required that the billets have no surface and internal cracks, and prevent the inner surface defects of the steel pipes caused by large particle inclusions. Therefore, the round billet continuous caster must meet the quality requirements of the round billets. The molten steel continuously passes through the water-cooled mold, solidifies into a hard shell and is continuously pulled out from the lower outlet of the mold, and then cooled by spraying water.

[0003] In the prior art, a secondary cooling water spraying device proposed by Chinese Patent Application No. CN201820818732.5 is mostly adopted, which includes pinch rolls for conveying the cast billets, in a cylindrical shape, provided with several pieces, and the axes of all the pinch rolls are in the same direction and linearly arranged side by side; and a nozzle group for cooling the pinch rolls and the cast billets, arranged above the side of the pinch rolls away from the cast billets, and its orthographic projection on the surface of the cast billets is between two adjacent pinch rolls or on a single pinch roll, provided with several; the nozzles are rotatably arranged in a single nozzle group, achieving the purpose of slowing down the heat transfer at the corners of the cast billets, improving the corner cracking defect problem of the cast billets during the continuous casting crystallization process, and at the same time the spraying water can play a role in cooling the pinch rolls, which can extend the service life of the pinch rolls.

[0004] The above technical solution sprays the cooling water on the cast billets from the bottom of the pinch rolls. However, when cooling the round billet sections, the rotatably arranged nozzle group cannot cool every corner of the round billet sections, resulting in a relatively low cooling effect of the device on the round billet sections and affecting the finished product quality of the round billet sections. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem that the rotatably arranged nozzle group in the prior art cannot cool every corner of the round billet sections, and a secondary cooling device for round billet section continuous casting is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solution:

[0007] A secondary cooling device for round billet section continuous casting includes a frame, a transmission roller for transmitting round billet sections is arranged on the frame in a matching manner, a first spraying assembly located below the transmission roller is arranged at the lower end of the frame through a connecting pipe, a second spraying assembly and two third spraying assemblies are connected and installed on the frame through a telescopic hose, a cylinder connected to the second spraying assembly is fixedly installed on the frame, and a driving rack is fixedly connected to the second spraying assembly;

[0008] An adjusting mechanism is provided on the frame to drive the third spraying component to adjust the angle through a driving rack.

[0009] Preferably, the first spraying component is arranged below the conveying roller, and the two third spraying components are arranged on both sides of the second spraying component.

[0010] Preferably, the driving rack has a C-shaped structure, and transmission teeth are arranged at one end of the driving rack away from the second spraying component.

[0011] Preferably, the adjusting mechanism includes a mounting frame fixedly connected to the frame. A rotating shaft is rotatably mounted on the mounting frame through a bearing. A driven gear meshingly connected with the driving rack is fixedly sleeved on the rotating shaft, and a connecting plate connected with the third spraying component is fixedly sleeved on the rotating shaft.

[0012] Preferably, the rotating shaft is horizontally arranged on the mounting frame, and the two connecting plates are arranged on both sides of the driven gear.

[0013] Preferably, the end of the driving rack with transmission teeth is located at the rear end of the driven gear.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] In the present utility model, the air cylinder drives the second spraying component to adjust the height. The second spraying component drives the rotating shaft to rotate through the meshing connection between the driving rack and the driven gear. The rotating shaft drives the third spraying component to deflect the angle through the connecting plate, so that the third spraying component can spray different-width round billet profiles. Compared with the prior art where the rotating nozzle group cannot cool every corner at the bottom of the round billet profile, in this technical solution, the first spraying component, the second spraying component and the third spraying component are used to spray and cool the round billet profile, which helps to improve the cooling effect of the device on the round billet profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a continuous casting secondary cooling device for round billet profiles proposed by the present utility model;

[0017] Figure 2 is a front sectional view of a continuous casting secondary cooling device for round billet profiles proposed by the present utility model;

[0018] Figure 3 is a side sectional view of a continuous casting secondary cooling device for round billet profiles proposed by the present utility model;

[0019] Figure 4 is a partial enlarged structural schematic diagram at A of a continuous casting secondary cooling device for round billet profiles proposed by the present utility model.

[0020] In the figure: 1. Frame; 2. Transmission roller; 3. First spray assembly; 4. Second spray assembly; 5. Third spray assembly; 6. Cylinder; 7. Driving rack; 8. Mounting bracket; 9. Rotating shaft; 10. Driven gear; 11. Connecting plate. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Refer to Figures 1 - 4 , the secondary cooling device for continuous casting of round billet profiles includes a frame 1, and a transmission roller 2 for transmitting round billet profiles is arranged on the frame 1 in a supporting manner;

[0023] A first spray assembly 3 is arranged at the lower end of the frame 1 through a connecting pipe, and the first spray assembly 3 is arranged below the transmission roller 2. A second spray assembly 4 and two third spray assemblies 5 are connected and installed on the frame 1 through a flexible hose. The two third spray assemblies 5 are arranged on both sides of the second spray assembly 4. By arranging the first spray assembly 3, the second spray assembly 4 and the third spray assembly 5 at different positions, multi-directional spray cooling of the round billet profiles can be realized;

[0024] It should be noted that: the connecting pipe and the flexible hose are both connected to an external water storage device;

[0025] A cylinder 6 connected to the second spray assembly 4 is fixedly installed on the frame 1. A driving rack 7 is fixedly connected to the second spray assembly 4. The driving rack 7 is in a C-shaped structure, and a transmission tooth is arranged at one end of the driving rack 7 away from the second spray assembly 4;

[0026] An adjusting mechanism for driving the third spray assembly 5 to adjust the angle is arranged on the frame 1 through the driving rack 7. The angle of the third spray assembly 5 can be adjusted through the adjusting mechanism, so as to change the spray angle of the third spray assembly 5, which can be adjusted according to the specific specifications of the round billet profiles, and helps to improve the cooling effect of the device on the round billet profiles;

[0027] Further explanation: The adjusting mechanism includes a mounting bracket 8 fixedly connected to the frame 1. The mounting bracket 8 is rotatably installed with a rotating shaft 9 through a bearing. The rotating shaft 9 is horizontally arranged on the mounting bracket 8. A driven gear 10 meshed with the driving rack 7 is fixedly sleeved on the rotating shaft 9. One end of the driving rack 7 provided with a transmission tooth is located at the rear end of the driven gear 10. A connecting plate 11 connected to the third spray assembly 5 is fixedly sleeved on the rotating shaft 9. The two connecting plates 11 are arranged on both sides of the driven gear 10;

[0028] It should be noted that: The specific model specifications of the first spray component 3, the second spray component 4, the third spray component 5 and the cylinder 6 need to be selected according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated, and Figures 1 - 2 The initial height positions of the third spray component 5 and the second spray component 4 in the attached

[0029] The functional principle of the present utility model can be described through the following operation mode:

[0030] When it is necessary to cool the round billet profile, start the cylinder 6. The cylinder 6 drives the second spray component 4 to adjust the height. The second spray component 4 drives the driving rack 7 to move vertically downward. The driving rack 7 drives the driven gear 10 to rotate. The driven gear 10 drives the rotating shaft 9 to rotate. The rotating shaft 9 drives the connecting plate 11 to rotate. The connecting plate 11 drives the third spray component 5 to deflect at an angle, so that the second spray component 4 and the third spray component 5 can adapt to round billet profiles of different specifications;

[0031] After the second spray component 4 and the third spray component 5 are adjusted, start the first spray component 3, the second spray component 4 and the third spray component 5 to cool the conveying roller 2 and the round billet profile.

[0032] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. Continuous secondary cooling device for round billet profiles, comprising a frame (1), on which a transfer roller (2) for transferring round billet profiles is arranged in a matching manner, characterized in that, At the lower end of the frame (1), a first spraying assembly (3) is provided through a connecting pipe. A second spraying assembly (4) and two third spraying assemblies (5) are connected and installed on the frame (1) through a telescopic hose. A cylinder (6) connected to the second spraying assembly (4) is fixedly installed on the frame (1), and a driving rack (7) is fixedly connected to the second spraying assembly (4). An adjusting mechanism for driving the third spraying assembly (5) to adjust the angle through the driving rack (7) is provided on the frame (1).

2. The secondary cooling device for continuous casting of round billet profiles according to claim 1, wherein The first spraying assembly (3) is arranged below the conveying roller (2), and the two third spraying assemblies (5) are arranged on both sides of the second spraying assembly (4).

3. The secondary cooling device for continuous casting of round billet profiles according to claim 1, characterized in that, The driving rack (7) is in a U-shaped structure, and a transmission tooth is provided at one end of the driving rack (7) away from the second spraying assembly (4).

4. The secondary cooling device for continuous casting of round billet profiles according to claim 1, characterized in that, The adjusting mechanism includes a mounting frame (8) fixedly connected to the frame (1). A rotating shaft (9) is rotatably installed on the mounting frame (8) through a bearing. A driven gear (10) meshed with the driving rack (7) is fixedly sleeved on the rotating shaft (9), and a connecting plate (11) connected to the third spraying assembly (5) is fixedly sleeved on the rotating shaft (9).

5. The secondary cooling device for continuous casting of round billet profiles according to claim 4, characterized in that, The rotating shaft (9) is horizontally arranged on the mounting frame (8), and the two connecting plates (11) are arranged on both sides of the driven gear (10).

6. The secondary cooling device for continuous casting of round billet profiles according to claim 4, wherein, One end of the driving rack (7) provided with a transmission tooth is located at the rear end of the driven gear (10).

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