Crystallizer of continuous casting machine

Abstract

The utility model discloses a continuous casting machine crystallizer which comprises a bottom flange plate, a shell and a top flange plate, the shell is arranged between the bottom flange plate and the top flange plate, a molten steel inlet hopper is arranged on the top flange plate, a concave cavity is arranged on the bottom flange plate, a concave cooling cavity is arranged in the concave cavity, and the molten steel inlet hopper is arranged in the concave cooling cavity. A movable cooling cavity is formed between two arms of the concave cavity, a flow channel is defined between the movable cooling cavity and the concave cavity, triangular turning plates are arranged on the two side walls of the flow channel in a staggered mode, a threaded sleeve is arranged on the inner side of the shell, a threaded rod is arranged in the threaded sleeve in a penetrating mode, one end of the threaded rod penetrates through the outer side of the shell, and the other end of the threaded rod is rotationally connected with the movable cooling cavity. The utility model aims to provide a crystallizer of a continuous casting machine, which can adjust the size of a runner so as to be suitable for different cross sections where molten steel flows.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous casting machines, in particular to a continuous casting machine crystallizer. Background Art

[0002] The production process of continuously pouring high-temperature molten steel into ingots with a certain cross-sectional shape and certain size specifications is called continuous steel casting. The crystallizer is a continuous steel casting equipment that receives the injected molten steel and solidifies it into a solid shell according to the specified cross-sectional shape. It is the most critical component of the continuous casting machine. Its structure, material and performance parameters play a decisive role in the quality of the ingot and the production capacity of the continuous casting machine. The molten steel is rapidly cooled in the crystallizer to form an ingot with a solidified shell on the outside and unsolidified molten steel on the inside. The existing crystallizer flow channel dimensions are mostly fixed. When the molten steel discharge from the tundish is relatively small, the molten steel is inconvenient to contact the inner wall of the crystallizer flow channel, resulting in poor cooling effect. For example, the utility model patent with the publication number CN219616663U records a continuous casting machine crystallizer, including A fixed frame, a crystallization box, a copper tube, a cooling channel and a cooling mechanism, wherein the crystallization box is fixedly arranged on the fixed frame, and the copper tube is arranged inside the crystallization box, the lower part of the crystallization box is arranged with a cooling channel, and the interior of the cooling channel is arranged with a cooling ring; a material guide frame is arranged at the lower part of the discharge port of the cooling channel, and a plurality of material guide rollers are arranged on the upper part of the material guide frame, and the upper part of the material guide roller is arranged with a cooling mechanism, in the device, the copper tube is the flow channel, but the size of the copper tube is fixed, when the cross section of the molten steel flow is small, it is difficult to contact the inner wall of the copper tube for cooling, in this regard, the utility model provides a continuous casting machine crystallizer, in the hope of overcoming this technical problem. Utility Model Content

[0003] The utility model aims to provide a continuous casting machine crystallizer, which can adjust the size of the flow channel so as to be suitable for different cross sections of molten steel flow.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A continuous casting machine crystallizer comprises a bottom flange plate, an outer shell and a top flange plate, the outer shell is arranged between the bottom flange plate and the top flange plate, a molten steel inlet bucket is arranged on the top flange plate, a concave cavity is arranged on the bottom flange plate, a concave cooling cavity is arranged in the concave cavity, a mobile cooling cavity is arranged between two arms of the concave cavity, a flow channel is enclosed between the mobile cooling cavity and the concave cavity, triangular turning plates are staggered at both side walls of the flow channel, a threaded sleeve is arranged on the inner side of the outer shell, a screw is passed through the threaded sleeve, one end of the screw passes through the outer side of the outer shell, and the other end is rotatably connected to the mobile cooling cavity.

[0006] Furthermore, the bottom flange plate and the top flange plate are both provided with rectangular holes, the upper and lower rectangular holes correspond to each other, and the flow channel is correspondingly provided between the two rectangular holes.

[0007] Furthermore, an arc groove is provided at the bottom of the bottom flange plate, and a rolling roller and a nozzle are provided between the inner walls of the arc groove. The nozzle is fixedly arranged and has multiple spray holes on the nozzle. The rolling roller is rotatably arranged and one end of the rolling roller is connected to the motor.

[0008] Furthermore, a bottom cooling chamber is provided on the bottom surface of the arc-shaped groove, and a third water inlet pipe is provided on the bottom cooling chamber.

[0009] Furthermore, a first water inlet pipe and a first drain pipe are provided on the concave cavity, and a second water inlet pipe and a second drain pipe are provided on the movable cooling cavity.

[0010] Furthermore, the second water inlet pipe and the second drain pipe are movable through the side wall of the shell and scales are arranged on the second water inlet pipe and the second drain pipe.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is provided with a concave cavity and a mobile cooling cavity on the bottom flange plate, a concave cooling chamber is provided in the concave cavity, a screw is rotatably provided in the mobile cooling chamber, and the flow channel area surrounded by the concave cavity and the mobile cooling chamber can be changed by rotating the screw, so that the flow channel area can be adjusted according to the cross-sectional area of ​​the water inlet of the tundish, thereby facilitating the contact between the molten steel and the inner wall of the flow channel, and a triangular turning plate is provided on the inner wall of the flow channel to turn over the molten steel, preventing the cooling process from being limited to the surface of the molten steel, so that the inside of the molten steel can also be cooled. In addition, an arc groove is provided and a bottom cooling chamber is provided on the bottom surface of the arc groove to further cool and crystallize the molten steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the front part of the utility model.

[0014] Figure 2 It is a schematic diagram of the rear part of the utility model.

[0015] Figure 3 Schematic diagram of the internal structure of the shell.

[0016] In the figure, 1-bottom flange plate, 2-housing, 3-top flange plate, 4-molten steel entering bucket, 5-arc groove, 6-rolling roller, 7-motor, 8-nozzle, 9-screw, 10-second water inlet pipe, 11-first water inlet pipe, 12-first drain pipe, 13-second drain pipe, 14-third water inlet pipe, 15-concave cavity, 16-concave cooling chamber, 17-flow channel, 18-triangular turning plate, 19-threaded sleeve, 20-bottom cooling chamber, 21-movable cooling chamber. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] Embodiment 1:

[0019] refer to Figure 1-3 As shown, the utility model provides a continuous casting machine crystallizer, including a bottom flange plate 1, a shell 2 and a top flange plate 3, the shell 2 is arranged between the bottom flange plate 1 and the top flange plate 3, the shell 2 and the bottom flange plate 1 are integrally formed, a molten steel inlet bucket 4 is arranged on the top flange plate 3, a concave cavity 15 is arranged on the bottom flange plate 1, a concave cooling chamber 16 is arranged in the concave cavity 15, cooling water is injected into the concave cooling chamber 16, a mobile cooling chamber 21 is arranged between two arms of the concave cavity 15, similarly, cooling water is injected into the mobile cooling chamber 21, a flow channel 17 is enclosed between the mobile cooling chamber 21 and the concave cavity 15, and the steel Water enters the bucket 4 through the molten steel and flows into the flow channel 17 and contacts the inner wall of the flow channel 17 for cooling. Triangular turning plates 18 are alternately arranged on both side walls of the flow channel 17. The triangular turning plates 18 are located at different horizontal planes. When the molten steel flows in the flow channel 17, it touches the triangular turning plates 18 so that the molten steel is split and turned so that the inside of the molten steel can also be cooled. A threaded sleeve 19 is arranged on the inner side of the outer shell 2. A screw 9 is passed through the threaded sleeve 19. One end of the screw 9 passes through the outer side of the outer shell 2, and the other end is rotatably connected to the movable cooling chamber 21. By rotating the screw 9, the movable cooling chamber 21 can be moved to adjust the cross-sectional size of the flow channel 17.

[0020] The bottom flange plate 1 and the top flange plate 3 are both provided with rectangular holes, the upper and lower rectangular holes correspond to each other, and the flow channel 17 is correspondingly provided between the two rectangular holes. The bottom of the bottom flange plate 1 is provided with an arc groove 5, and a rolling roller 6 and a nozzle 8 are provided between the inner walls of the arc groove 5. The nozzle 8 is fixedly provided and has a plurality of nozzle holes. The rolling roller 6 is rotatably provided and one end of the rolling roller 6 is connected to the motor 7. There is a certain gap between the rolling roller 6 and the bottom surface of the arc groove 5, and the crystallized steel billet is preliminarily rolled by the rolling roller 6. In order to further improve the crystallization cooling effect of the molten steel, a bottom cooling chamber 20 is provided on the bottom surface of the arc groove 5, and a third water inlet pipe 14 is provided on the bottom cooling chamber 20. The concave cavity 15 is provided with a first water inlet pipe 11 and a first drain pipe 12, and the mobile cooling cavity 21 is provided with a second water inlet pipe 10 and a second drain pipe 13. The second water inlet pipe 10 and the first water inlet pipe 11 can be connected to a water source through a hose and a three-way joint, and similarly, the first drain pipe 12 and the second drain pipe 13 can also be connected to a water source through a hose and a three-way joint. The second water inlet pipe 10 and the second drain pipe 13 are movable through the side wall of the housing 2 and scales are provided on the second water inlet pipe 10 and the second drain pipe 13, so as to facilitate the knowledge of the width of the flow channel 17.

[0021] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components or layout of the subject combination layout. In addition to the modifications and improvements made to the components or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A continuous casting machine crystallizer, comprising a bottom flange plate (1), a shell (2) and a top flange plate (3), wherein the shell (2) is arranged between the bottom flange plate (1) and the top flange plate (3), characterized in that: The top flange plate (3) is provided with a molten steel inlet bucket (4), the bottom flange plate (1) is provided with a concave cavity (15), a concave cooling chamber (16) is provided in the concave cavity (15), a movable cooling cavity (21) is provided between two arms of the concave cavity (15), a flow channel (17) is enclosed between the movable cooling cavity (21) and the concave cavity (15), triangular turning plates (18) are alternately provided at the two side walls of the flow channel (17), a threaded sleeve (19) is provided on the inner side of the outer shell (2), a screw rod (9) is passed through the threaded sleeve (19), one end of the screw rod (9) passes through the outer side of the outer shell (2), and the other end is rotatably connected to the movable cooling cavity (21).

2. A continuous casting machine crystallizer according to claim 1, characterized in that: The bottom flange plate (1) and the top flange plate (3) are both provided with rectangular holes, the upper and lower rectangular holes correspond to each other, and the flow channel (17) is correspondingly provided between the two rectangular holes.

3. A continuous casting machine crystallizer according to claim 1, characterized in that: The bottom of the bottom flange plate (1) is provided with an arc-shaped groove (5), and a rolling roller (6) and a nozzle (8) are provided between the inner walls of the arc-shaped groove (5). The nozzle (8) is fixedly arranged and has a plurality of nozzle holes. The rolling roller (6) is rotatably arranged and one end of the rolling roller (6) is connected to a motor (7).

4. A continuous casting machine crystallizer according to claim 3, characterized in that: The bottom surface of the arc-shaped groove (5) is provided with a bottom cooling chamber (20), and the bottom cooling chamber (20) is provided with a third water inlet pipe (14).

5. The continuous casting machine crystallizer according to claim 1, characterized in that: The concave cavity (15) is provided with a first water inlet pipe (11) and a first drain pipe (12), and the mobile cooling cavity (21) is provided with a second water inlet pipe (10) and a second drain pipe (13).

6. A continuous casting machine crystallizer according to claim 5, characterized in that: The second water inlet pipe (10) and the second drainage pipe (13) are movably passed through the side wall of the outer shell (2), and scales are provided on the second water inlet pipe (10) and the second drainage pipe (13).

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