Crystallizer foot roll casting blank cooling device

Abstract

The utility model relates to the technical field of metal continuous casting, and provides a crystallizer foot roller casting blank cooling device, at least two foot rollers are arranged on a machine body in a rotating mode, the rotating axial direction of the foot rollers is the horizontal direction, the multiple foot rollers are arranged at intervals in the height direction and are arranged in two rows, and a blank passing space is formed between the two rows of foot rollers; the eight cooling water nozzles are all located below the multiple foot rollers, and the multiple cooling water nozzles are arranged at intervals in the height direction, horizontally move relative to the machine body and face the blank passing space. By means of the technical scheme, the problems that when the casting blank leaves the crystallizer and reaches the foot roller position, bulging and steel leakage of the casting blank are easily caused, the quality of the casting blank is seriously affected, and economic losses of enterprises are caused are solved.

Description

Technical Field

[0001] This utility model relates to the field of metal continuous casting technology, specifically to a crystallizer foot roll billet cooling device. Background Technology

[0002] The crystallizer is the most critical component of continuous casting equipment, the heart of the continuous casting machine. Its performance plays a vital role in improving continuous casting productivity, maintaining normal production, and ensuring billet quality. The crystallizer solidifies molten steel into a shell of a certain thickness. This shell possesses sufficient strength to allow the billet to be smoothly pulled out during continuous casting. When producing thicker billets, the shell formed by the cooling of the crystallizer's four copper walls is relatively thin, and the static pressure of the molten steel in the billet core is relatively high. As the billet leaves the crystallizer and passes the foot rolls, it is prone to bulging and leakage, severely affecting billet quality and causing economic losses to the enterprise. Utility Model Content

[0003] This utility model proposes a cooling device for casting billets using the foot rollers of a crystallizer, which solves the problem that when the casting billet leaves the crystallizer and reaches the foot roller position, it is easy to cause bulging and steel leakage of the casting billet, which seriously affects the quality of the casting billet and causes economic losses to the enterprise.

[0004] The technical solution of this utility model is as follows: A cooling device for a crystallizer foot roll casting includes:

[0005] Organism;

[0006] Foot rollers, there are at least two foot rollers, both of which are rotatably mounted on the machine body with their rotation axis in the horizontal direction. Multiple foot rollers are arranged at intervals along the height direction in two rows, with a through space between the two rows of foot rollers.

[0007] The cooling water nozzles are multiple in number and are located below the multiple foot rollers. The multiple cooling water nozzles are arranged at intervals along the height direction and are horizontally movable relative to the machine body, and are directed toward the billet passage space.

[0008] Optionally, the body has a through slot and further includes:

[0009] The first support is movably disposed within the through groove;

[0010] The second support is disposed on the first support, and the cooling water nozzle is disposed on the second support.

[0011] Optionally, the cooling water nozzle is oscillating relative to the machine body, wherein the second support is rotatably mounted on the first support.

[0012] Optionally, the cooling water nozzle has a connecting portion and further includes:

[0013] A frame, which is horizontally movable and mounted on the machine body;

[0014] A connector is provided, which is lifted and lowered on the frame. The connecting part is rotatably mounted on the connector. When the connector is lifted and lowered, it drives the cooling water nozzle to swing.

[0015] Optionally, the connector has an adjusting ramp and further includes:

[0016] A movable component is movably mounted on the frame and has a pushing inclined surface. The pushing inclined surface slides against the adjusting inclined surface, so that after the movable component moves, it drives the connecting component to move up and down.

[0017] Optionally, the cooling water nozzle has four nozzles, which are, from top to bottom, a first nozzle, a second nozzle, a third nozzle, and a fourth nozzle;

[0018] The connector includes a first connector and a second connector;

[0019] The first nozzle and the second nozzle are rotatably mounted on the first connecting member;

[0020] The third nozzle and the fourth nozzle are rotatably mounted on the second connector.

[0021] Optionally, the first connector has a first adjusting ramp, and the second connector has a second adjusting ramp;

[0022] There are two pushing inclined surfaces. After the moving part moves, the two pushing inclined surfaces slide and abut against the first adjusting inclined surface and the second adjusting inclined surface, respectively.

[0023] Optionally, the frame has a first sliding groove, which is arranged along the height direction, and the first connecting member is lifted and disposed within the first sliding groove.

[0024] Optionally, the frame also has a second sliding groove, which is arranged horizontally, and the moving part is horizontally movably disposed within the second sliding groove.

[0025] Optionally, the cooling water nozzle has a fan-shaped nozzle.

[0026] The working principle and beneficial effects of this utility model are as follows:

[0027] In this invention, by adding nozzles below the foot rollers, the cooling intensity of the billet can be effectively increased, the billet shell thickness can be increased, the narrow face bulging of the billet can be improved, the appearance quality of the billet and the rolling quality can be improved, and the economic benefits of the enterprise can be increased. Attached Figure Description

[0028] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a partial structural diagram of the present invention;

[0031] Figure 3 This is a partial structural diagram of the present invention;

[0032] Figure 4 This is a partial structural diagram of the present invention;

[0033] Figure 5 This is a schematic diagram of the frame structure of this utility model.

[0034] In the figure: 1. Machine body; 101. Through groove; 2. Foot roller; 3. Through blank space; 4. Cooling water nozzle; 4a. First nozzle; 4b. Second nozzle; 4c. Third nozzle; 4d. Fourth nozzle; 401. Connecting part; 402. Fan-shaped nozzle; 5. First support; 6. Second support; 7. Frame; 701. First sliding groove; 702. Second sliding groove; 8. Connecting part; 8a. First connecting part; 8b. Second connecting part; 801. Adjusting slope; 801a. First adjusting slope; 801b. Second adjusting slope; 9. Moving part; 901. Pushing slope. Detailed Implementation

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0036] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0037] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Reference Figures 1-5 A crystallizer foot roll billet cooling device is proposed. There are at least two foot rolls 2, which are rotatably mounted on the machine body 1 with their rotation axis in the horizontal direction. The multiple foot rolls 2 are arranged at intervals along the height direction in two rows, and the space between the two rows of foot rolls 2 is the billet passage space 3. There are multiple cooling water nozzles 4, which are located below the multiple foot rolls 2. The multiple cooling water nozzles 4 are arranged at intervals along the height direction and are horizontally movable relative to the machine body 1, facing the billet passage space 3.

[0040] In this embodiment, at least two foot rollers 2 are rotatably mounted on the machine body 1 and arranged at intervals along the height direction to form two rows. The space between the two rows of foot rollers 2 is the billet passage space 3, which is used for the billet to pass through. The foot rollers 2 can support and guide the billet, ensuring the stability of the billet during movement. At the same time, the rotation of the foot rollers 2 helps the billet to pass smoothly through the cooling device, reducing the frictional resistance between the billet and the device.

[0041] Multiple cooling water nozzles 4 are located below the foot rollers 2 and are also spaced apart along the height direction. These nozzles can move horizontally relative to the machine body 1, and their spray direction is towards the billet passage space 3 between the two rows of foot rollers 2. When the billet passes through the billet passage space 3, the cooling water sprayed from the cooling water nozzles 4 can directly act on the billet, achieving further cooling of the billet.

[0042] To address the issue of high static pressure in the core of thick-gauge billets, cooling water nozzles 4 are added below the foot roll 2. This allows the cooling water to act more concentratedly and thoroughly on the billet, effectively increasing the cooling intensity. Higher cooling intensity enables the billet surface to solidify more quickly, thereby increasing the billet shell thickness. A thicker billet shell can better withstand the static pressure of the molten steel in the core, providing a better billet foundation for subsequent processes.

[0043] Thick-sized billets are prone to bulging due to the high static pressure of molten steel in the core. Increased cooling intensity and thicker billet shell can effectively improve the problem of bulging on narrow faces of billets, making the billet shape more regular and improving the quality of billets.

[0044] By addressing the bulging issue, surface defects in the billet were reduced, thereby improving the billet's appearance quality. Simultaneously, due to the increased thickness and more regular shape of the billet shell, deformation during subsequent rolling was more uniform, reducing defects such as edge cracks and improving rolling quality. Improved billet appearance and rolling quality translate to a higher product yield, reduced scrap losses due to quality issues, and ultimately increased economic benefits for the company.

[0045] Furthermore, the body 1 has a through groove 101, and the first support 5 is movably disposed in the through groove 101; the second support 6 is disposed on the first support 5, and the cooling water nozzle 4 is disposed on the second support 6.

[0046] In this embodiment, a through groove 101 is provided on the body 1 to provide a moving track for the first support 5, which limits the moving direction of the first support 5 so that it can only move within the range specified by the through groove 101, thus providing a basic framework for the horizontal movement of the entire device.

[0047] The first support 5 is movable within the through groove 101. This movable arrangement allows other components mounted on it to be flexibly adjusted in the horizontal direction, which is a key element in adjusting the position of the cooling water nozzle 4. The second support 6 is fixed to the first support 5, serving to receive and further position the cooling water nozzle 4. The cooling water nozzle 4 is mounted on the second support 6. As the first support 5 moves within the through groove 101, the cooling water nozzle 4 can move in the horizontal direction, thus enabling adaptive cooling of the object to be cooled in the width direction to meet different width requirements.

[0048] The device can adapt to the width of objects being cooled by horizontally moving the cooling water nozzles 4. This means that the device can be used to cool products of various specifications, improving the versatility and applicability of the equipment. It eliminates the need to design different cooling equipment specifically for products of different widths, reducing the equipment procurement and maintenance costs for enterprises.

[0049] The position of the cooling water nozzle 4 in the width direction can be flexibly adjusted, allowing the cooling water to be applied more precisely to the parts requiring cooling. This avoids uneven cooling, improves the cooling effect, and helps improve product quality. For example, for products with a wider width, the nozzle can be moved to a suitable position to ensure that the edges and center of the product are adequately cooled; for products with a narrower width, the nozzle can be concentrated within the narrower width area to improve cooling efficiency. The horizontally movable design allows operators to easily and quickly adjust the position of the cooling water nozzle 4 according to actual production conditions, such as changes in product specifications or adjustments to production processes. This enhances operational flexibility during production, helps companies cope with diverse production needs, and improves production efficiency.

[0050] Furthermore, the cooling water nozzle 4 is oscillating relative to the body 1, wherein the second support 6 is rotatably mounted on the first support 5.

[0051] In this embodiment, the second support 6 swings relative to the first support 5. When the first support 5 moves horizontally within the through groove 101 of the body 1, the second support 6 can rotate simultaneously, thereby driving the cooling water nozzle 4 to move not only horizontally but also change its angle in space.

[0052] Furthermore, the cooling water nozzle 4 has a connecting part 401, and the frame 7 is horizontally movable on the machine body 1; the connecting piece 8 is raised and lowered on the frame 7, and the connecting part 401 is rotatably mounted on the connecting piece 8. After the connecting piece 8 is raised and lowered, it drives the cooling water nozzle 4 to swing.

[0053] In this embodiment, the connector 8 achieves a lifting function on the frame 7, possibly through a screw and nut drive, a hydraulic lifting mechanism, or other similar lifting devices. The connecting part 401 of the cooling water nozzle 4 is rotatably mounted on the connector 8. When the connector 8 is raised or lowered on the frame 7, due to the rotatable connection between the connecting part 401 and the connector 8, the cooling water nozzle 4 will swing about the rotation point of the connecting part 401 and the connector 8 as an axis, thereby changing the spray angle of the cooling water nozzle 4.

[0054] Furthermore, the connector 8 has an adjusting ramp 801, and the movable part 9 is movably mounted on the frame 7 and has a pushing ramp 901. The pushing ramp 901 slides against the adjusting ramp 801, so that after the movable part 9 moves, it drives the connector 8 to move up and down.

[0055] In this embodiment, the movable member 9 has a pushing inclined surface 901, and the connecting member 8 is provided with an adjusting inclined surface 801. The two inclined surfaces slide against each other. When the movable member 9 moves on the frame 7, its pushing inclined surface 901 slides along the adjusting inclined surface 801 of the connecting member 8. Due to the interaction of the two inclined surfaces, the horizontal movement of the movable member 9 is converted into the vertical movement of the connecting member 8. The connecting member 8 is connected to the cooling water nozzle 4, so the vertical movement of the connecting member 8 will drive the cooling water nozzle 4 to rise and fall synchronously, thereby realizing the vertical position adjustment of the cooling water nozzle 4. Combined with the aforementioned connecting part 401 being rotatably mounted on the connecting member 8, the swing adjustment of the cooling water nozzle 4 is finally realized.

[0056] The horizontal movement of the moving part 9 and the vertical movement of the connecting part 8 are achieved through the interaction of two inclined planes. This simple mechanical structure design results in a relatively small number of parts and a small space occupation for the entire device, which not only reduces manufacturing difficulty and cost, but also facilitates installation, maintenance and repair.

[0057] The sliding fit between the inclined surfaces provides relatively precise displacement conversion. The minute movement of the moving part 9 can be translated into a relatively stable and precise lifting amount of the connecting part 8, thereby enabling fine adjustment of the position of the cooling water nozzle 4. This helps meet the high-precision requirements for the cooling water spray position during the billet cooling process, ensuring the consistency and reliability of the cooling effect.

[0058] Furthermore, the cooling water nozzle 4 has four nozzles, which are, from top to bottom, a first nozzle 4a, a second nozzle 4b, a third nozzle 4c, and a fourth nozzle 4d; the connector 8 includes a first connector 8a and a second connector 8b; the first nozzle 4a and the second nozzle 4b are rotatably mounted on the first connector 8a; the third nozzle 4c and the fourth nozzle 4d are rotatably mounted on the second connector 8b.

[0059] In this embodiment, the device is equipped with four cooling water nozzles 4, which are named, from top to bottom, first nozzle 4a, second nozzle 4b, third nozzle 4c, and fourth nozzle 4d. This arrangement allows for cooling of the billet at different heights to accommodate the varying cooling requirements of different parts of the billet.

[0060] The connector 8 is divided into a first connector 8a and a second connector 8b. The first nozzle 4a and the second nozzle 4b are mounted on the first connector 8a by a rotatable connection, while the third nozzle 4c and the fourth nozzle 4d are rotatably mounted on the second connector 8b. This arrangement allows each group of nozzles (the first and second nozzles as one group, and the third and fourth nozzles as another group) to be adjusted at an angle relatively independently. This enables each group of nozzles to cool the billet at different heights and angles.

[0061] Furthermore, the first connecting member 8a has a first adjusting slope 801a, and the second connecting member 8b has a second adjusting slope 801b; there are two pushing slopes 901, and after the moving member 9 moves, the two pushing slopes 901 slide against the first adjusting slope 801a and the second adjusting slope 801b respectively.

[0062] In this embodiment, the first connecting member 8a has a first adjusting ramp 801a, and the second connecting member 8b has a second adjusting ramp 801b. The movable member 9 is provided with two pushing ramps 901. When the movable member 9 moves on the frame 7, these two pushing ramps 901 will slide and abut against the first adjusting ramp 801a and the second adjusting ramp 801b respectively. The pushing ramps 901 will apply force to the first adjusting ramp 801a and the second adjusting ramp 801b, pushing them to perform corresponding movements. Depending on the direction of the ramps and the direction of movement of the movable member 9, the first connecting member 8a and the second connecting member 8b will have opposite movement tendencies. For example, when the movable member 9 moves in one direction, the first connecting member 8a may cause the first nozzle 4a and the second nozzle 4b to swing upwards, while the second connecting member 8b may simultaneously cause the third nozzle 4c and the fourth nozzle 4d to swing downwards; when the movable member 9 moves in the opposite direction, the first nozzle 4a and the second nozzle 4b swing downwards, while the third nozzle 4c and the fourth nozzle 4d swing upwards.

[0063] This structure allows for the reverse oscillation adjustment of the first and second sets of nozzles (one set consisting of the first and second nozzles, and the other set consisting of the third and fourth nozzles) through the simple movement of the moving component 9. During the billet cooling process, this allows for flexible adjustment of the cooling angle according to the different cooling requirements of the upper and lower parts of the billet, enabling the upper first and second nozzles and the lower third and fourth nozzles to oscillate simultaneously in different directions, better adapting to the temperature distribution and cooling requirements at different heights of the billet. Utilizing a sloped mechanical structure to achieve the reverse oscillation of the two sets of nozzles avoids complex transmission and control mechanisms; the complex oscillation adjustment function can be completed solely through the linear movement of the moving component 9. The structure is simple, easy to manufacture, and easy to maintain. Simultaneously, this simple structure ensures high efficiency in adjustment. When a rapid adjustment of the cooling angle is required, the operator only needs to move the moving component 9 to achieve coordinated adjustment of the two sets of nozzles, improving operational efficiency on the production floor.

[0064] Furthermore, the frame 7 has a first sliding groove 701, which is arranged along the height direction, and the first connecting member 8a is lifted and disposed within the first sliding groove 701. The frame 7 also has a second sliding groove 702, which is arranged along the horizontal direction, and the moving member 9 is horizontally disposed within the second sliding groove 702.

[0065] In this embodiment, the first connecting member 8a can move up and down along the height direction within the first sliding groove 701. This ensures that the first connecting member 8a will not wobble or shift during the lifting and lowering process, thereby ensuring the positional accuracy of the first nozzle 4a and the second nozzle 4b installed on the first connecting member 8a. The second sliding groove 702 enables the moving member 9 to maintain a stable trajectory when moving in the horizontal direction, avoiding deviation or wobble.

[0066] Furthermore, the cooling water nozzle 4 has a fan-shaped nozzle 402.

[0067] In this embodiment, the fan-shaped nozzle 402 allows cooling water to be sprayed out in a fan shape. A specific spray pressure and flow rate can be set, resulting in strong and uniform cooling. Compared to a circular nozzle, it has a larger coverage area, forming a wider cooling zone on the surface of objects requiring cooling, such as the casting, thus contributing to uniform cooling. This effectively avoids localized overheating or uneven cooling, improves the overall quality of the casting, and reduces internal stress and defects caused by uneven temperature.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cooling device for a crystallizer foot roll casting billet, characterized in that, include: Body (1); Foot rollers (2), there are at least two foot rollers (2), both of which are rotatably mounted on the machine body (1), and their rotation axis is in the horizontal direction. Multiple foot rollers (2) are arranged at intervals along the height direction and are in two rows. The space between the two rows of foot rollers (2) is a blank-through space (3). Cooling water nozzles (4) are provided in multiple locations, all located below the multiple foot rollers (2). The multiple cooling water nozzles (4) are arranged at intervals along the height direction and are horizontally movable relative to the machine body (1) and facing the billet space (3).

2. The crystallizer foot roll casting billet cooling device according to claim 1, characterized in that, The body (1) has a through groove (101) and further includes: The first support (5) is movably disposed within the through groove (101); The second support (6) is disposed on the first support (5), and the cooling water nozzle (4) is disposed on the second support (6).

3. The crystallizer foot roll casting billet cooling device according to claim 2, characterized in that, The cooling water nozzle (4) is horizontally movable and swinging relative to the body (1), wherein the second support (6) is rotatably mounted on the first support (5).

4. A crystallizer foot roll billet cooling device according to claim 3, characterized in that, The cooling water nozzle (4) has a connecting part (401) and further includes: A frame (7) is horizontally movable and mounted on the body (1); Connector (8), the connector (8) is raised and lowered on the frame (7), the connecting part (401) is rotatably mounted on the connector (8), and the connector (8) is raised and lowered to drive the cooling water nozzle (4) to swing.

5. A crystallizer foot roll billet cooling device according to claim 4, characterized in that, The connector (8) has an adjusting ramp (801) and further includes: The movable component (9) is movably mounted on the frame (7) and has a pushing inclined surface (901). The pushing inclined surface (901) slides against the adjusting inclined surface (801), so that after the movable component (9) moves, it drives the connecting component (8) to move up and down.

6. A crystallizer foot roll billet cooling device according to claim 5, characterized in that, The cooling water nozzles (4) are four in number, from top to bottom: first nozzle (4a), second nozzle (4b), third nozzle (4c) and fourth nozzle (4d); The connector (8) includes a first connector (8a) and a second connector (8b); The first nozzle (4a) and the second nozzle (4b) are rotatably mounted on the first connector (8a); The third nozzle (4c) and the fourth nozzle (4d) are rotatably mounted on the second connector (8b).

7. A crystallizer foot roll billet cooling device according to claim 6, characterized in that, The first connector (8a) has a first adjusting slope (801a), and the second connector (8b) has a second adjusting slope (801b); There are two pushing inclined surfaces (901). After the moving member (9) moves, the two pushing inclined surfaces (901) slide and abut against the first adjusting inclined surface (801a) and the second adjusting inclined surface (801b) respectively.

8. A crystallizer foot roll billet cooling device according to claim 7, characterized in that, The frame (7) has a first sliding groove (701), which is arranged along the height direction, and the first connector (8a) is lifted and disposed in the first sliding groove (701).

9. A crystallizer foot roll billet cooling device according to claim 8, characterized in that, The frame (7) also has a second sliding groove (702), which is arranged in a horizontal direction, and the moving part (9) is horizontally moved and disposed in the second sliding groove (702).

10. A crystallizer foot roll billet cooling device according to claim 1, characterized in that, The cooling water nozzle (4) has a fan-shaped nozzle (402).

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