A modified large-diameter crystallization wheel

Abstract

This invention relates to the field of continuous casting equipment for metal materials, and discloses a modified large-diameter crystallizing wheel, including a crystallizing wheel body. The crystallizing wheel body has casting grooves along its outer circumference, and a steel strip is wound around the outer diameter of the casting grooves. A central water collection seat is located at the center of the crystallizing wheel body. A heat insulation plate is fixedly installed inside the central water collection seat, and the interior of the central water collection seat is divided into an inlet chamber and a return chamber by the heat insulation plate. A spiral cooling groove is formed inside the crystallizing wheel body, and an annular return water groove is formed inside the crystallizing wheel body near the inner side of the spiral cooling groove. This invention, through multi-layer sealing, double-layer cooling, flexible clamping, and stable support design, significantly improves sealing reliability and cooling uniformity, avoids steel strip misalignment and billet defects, extends equipment life, reduces maintenance costs, is suitable for large-diameter multi-material continuous casting, and significantly improves product qualification rate.

Description

Technical Field

[0001] This invention relates to the field of continuous casting equipment for metal materials, specifically a modified large-diameter crystallizing wheel. Background Technology

[0002] In the field of continuous casting of metal materials, large-diameter crystallizing wheels, as core forming equipment, are widely used in the preparation of billets for materials such as copper, aluminum, and alloys due to their advantages of enabling large-scale continuous production and high billet forming efficiency. Their working principle involves the rotation of the crystallizing wheel driving the casting trough and steel strip to form a closed cavity. After the molten metal is injected into the cavity, it solidifies rapidly through a cooling system, ultimately forming a continuous billet. This is a crucial link connecting the smelting and rolling processes, directly affecting billet quality and production efficiency.

[0003] However, existing large-diameter crystallizing wheels still suffer from numerous technical defects in practical applications, hindering improvements in product quality and production stability. On one hand, the sealing structure design is often unreasonable, employing only a single seal, which is ill-suited to the high-temperature casting environment and high-speed rotation of the crystallizing wheel. This leads to sealing gaps caused by thermal expansion and contraction, resulting in molten metal leakage, wasting raw materials, and damaging equipment components. On the other hand, cooling systems are often simple straight-hole or annular channels with small heat exchange areas and slow water flow. Furthermore, the mixing and interference between inlet and outlet water cause uneven cooling along the circumference and radial direction of the casting tank, leading to defects such as cracks and segregation in the cast billet. The cooling channels are also prone to blockage due to impurity accumulation, affecting long-term cooling efficiency. Simultaneously, the steel strip clamping mechanism is often a rigid design, unable to dynamically compensate for changes in clamping force, easily resulting in steel strip misalignment, detachment, or excessive friction damage, further reducing the surface quality of the cast billet and the service life of the equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a modified large-diameter crystallizing wheel, which solves the technical problems of traditional large-diameter crystallizing wheels, such as easy leakage of seals, uneven cooling leading to defects in the cast billet, unstable steel strip clamping force causing deviation, poor equipment operation stability, and high maintenance costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a modified large-diameter crystallizing wheel, comprising a crystallizing wheel body, wherein a casting groove is formed along the outer circumference of the crystallizing wheel body, and a steel strip is wound around the outer diameter of the casting groove. A central water collection seat is provided at the center of the crystallizing wheel body, and a heat insulation plate is fixedly installed inside the central water collection seat, and the interior of the central water collection seat is divided into an inlet chamber and a return chamber by the heat insulation plate. A spiral cooling groove is formed inside the crystallizing wheel body, and an annular return water groove is formed inside the crystallizing wheel body near the inner side of the spiral cooling groove. The other side of the spiral cooling groove is connected to the interior of the annular return water groove through a drainage channel. A side positioning frame is fixedly installed on one side of the crystallizing wheel body, and two clamping mechanisms are also provided on the side wall of the side positioning frame near the crystallizing wheel body.

[0006] The sidewall of the casting groove is provided with a stepped sealing groove. An elastic pressure ring is fixedly installed at the upper part of the stepped sealing groove, a metal sealing ring is fixedly installed at the middle part of the stepped sealing groove, and a high-temperature resistant sealing ring is fixedly installed at the lower part of the stepped sealing groove.

[0007] A water inlet ring is movably mounted on one end of the central water collection base near the water inlet chamber via a sealed bearing. A water inlet groove is provided inside the water inlet ring. A water inlet pipe is fixedly installed on one side of the bottom of the water inlet ring. A water inlet grille is fixedly installed on the side of the central water collection base near the water inlet ring at a position corresponding to the water inlet groove.

[0008] A return water pipe is movably installed at one end of the central water collection basin near the return water chamber.

[0009] The central water collection seat is connected to the inner circumference of the crystallizing wheel body via several front support rods on its outer diameter near the water inlet chamber. Each of the front support rods has a water inlet channel. The spiral cooling tank has several tapered water inlet channels on one side, and the ends of the tapered water inlet channels are connected to the corresponding water inlet channels.

[0010] The central water collection seat is connected to the inner circumference of the crystallizing wheel body via several rear support rods on its outer diameter near the return water chamber. Each of the rear support rods has a return water channel inside, and the annular return water groove is connected to the end of all the return water channels.

[0011] A drive shaft is fixedly installed at the middle of one end of the central water collection seat near the water inlet ring, and the end of the drive shaft is connected to the drive end of the geared motor.

[0012] A heat-conducting rib is fixedly installed on the bottom wall of the casting tank, and the bottom end of the heat-conducting rib extends into the interior of the spiral cooling tank.

[0013] Several support guide wheels are evenly fixedly installed on the inner wall of the side positioning frame, and support wheel contact rings are fixedly installed on the front and rear side walls of the crystallizing wheel body. The ends of the support guide wheels abut against the outer surface of the support wheel contact rings.

[0014] The clamping mechanism includes a cross frame, which is fixedly installed on the side wall of the side positioning frame by a support member. Rotating frames are movably installed at both ends of the cross frame. Spring plates are fixedly installed on both sides of the interior of the cross frame, and the ends of the spring plates extend into the interior of the corresponding rotating frames. Pressure rollers are fixedly installed on the inner side walls of the rotating frames, and the ends of the pressure rollers abut against the surface of the spring plates. A linkage frame is movably installed at the end of the rotating frame near the crystallizing wheel. The ends of the linkage frames are movably installed on both sides of the clamping wheel, and the ends of the clamping wheels abut against the outer surface of the steel strip.

[0015] This invention provides a modified large-diameter crystallizing wheel. It has the following beneficial effects: 1. The sidewall of the casting tank of this invention adopts a stepped multi-layer sealing structure of elastic pressure ring, metal sealing ring and high temperature resistant sealing ring. The triple sealing works together to effectively block the leakage path of molten metal from the side of the cavity. At the same time, the metal sealing ring enhances the structural rigidity, the high temperature resistant sealing ring is suitable for the high temperature environment of casting, and the elastic pressure ring compensates for the sealing gap caused by thermal expansion and contraction. The sealing reliability is improved, avoiding product scrap and equipment damage caused by leakage.

[0016] 2. The crystallizing wheel of the present invention is provided with a spiral cooling tank inside, and with the heat-conducting ribs extending into the tank, the heat exchange area between the cooling water and the casting tank is greatly increased; at the same time, the gradually narrowing water inlet channel design is adopted to accelerate the cooling water, improve the water flow rate and heat exchange efficiency, and improve the cooling capacity and shorten the solidification time of the molten metal compared with the traditional straight hole cooling channel.

[0017] 3. The central water collection base of this invention is divided into an independent inlet water chamber and a return water chamber by a heat insulation plate, which avoids the cooling efficiency reduction caused by the mixing of inlet and return water. At the same time, the inlet water grille can filter impurities in the cooling water, reduce the risk of scaling and clogging in the spiral cooling tank, and ensure cooling stability under long-term operation.

[0018] 4. The clamping mechanism of this invention adopts an elastic compensation structure of spring plate, rotating frame, linkage frame and clamping wheel. The elastic force of spring plate is transmitted to clamping wheel through rotating frame and linkage frame to achieve flexible clamping of steel strip. At the same time, the relative sliding design between pressure roller and spring plate can dynamically compensate for the change of elastic force during the bending process of spring plate, so that the clamping force of clamping wheel on steel strip always remains uniform and stable, and completely solves the problem of uneven pressure caused by traditional rigid clamping. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the crystallizing wheel in this invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a diagram showing the internal structure of the central water collection seat in this invention; Figure 5 for Figure 1 Enlarged view at point B in the middle; Figure 6 This is a schematic diagram of the clamping mechanism in this invention; Figure 7 This is a front view of the present invention.

[0020] The components include: 1. Crystallizing wheel body; 2. Casting groove; 3. Steel strip; 4. Stepped sealing groove; 5. Elastic pressure ring; 6. Metal sealing ring; 7. High-temperature resistant sealing ring; 8. Central water collection seat; 9. Heat insulation plate; 10. Water inlet chamber; 11. Water return chamber; 12. Water inlet ring; 13. Water inlet groove; 14. Water inlet pipe; 15. Water inlet grille; 16. Water return pipe; 17. Front support rod; 18. Water inlet channel; 19. Rear support rod. 20. Water return channel; 21. Drive shaft; 22. Spiral cooling tank; 23. Gradually narrowing water inlet channel; 24. Annular water return tank; 25. Drainage channel; 26. Heat-conducting rib; 27. Side positioning frame; 28. Support guide wheel; 29. ​​Support wheel contact ring; 30. Pressing mechanism; 301. Horizontal frame; 302. Rotating frame; 303. Spring plate; 304. Pressure roller; 305. Linkage frame; 306. Pressing wheel. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Please see the appendix Figure 1 -Appendix Figure 7 This invention provides a modified large-diameter crystallizing wheel, such as... Figure 1As shown, the system includes a crystallizing wheel 1, which is an integral structure and serves as the core load-bearing component of the entire crystallizing wheel. It provides the mounting foundation for various functional structures and enables continuous casting of molten metal through its own rotation. A casting groove 2 is formed along the outer circumference of the crystallizing wheel 1. The casting groove 2 is a forming cavity for the molten metal, which, together with a steel strip 3, forms a closed casting space, providing a shaping area for the cooling and crystallization of the molten metal. A steel strip 3 is wound around the outer diameter of the casting groove 2. The steel strip 3 can move synchronously with the crystallizing wheel 1, conforming to the casting groove 2 to form a closed cavity, preventing leakage of molten metal and reducing friction between the cast billet and the casting groove 2, thus ensuring the surface quality of the cast billet. A central water collection seat 8 is located at the center of the central part of the structure. The central water collection seat 8 is the core component for the centralized distribution and recycling of cooling water, realizing the orderly entry and return of cooling water. At the same time, it provides installation support for the drive shaft 21, support rods, and other structures. A heat insulation plate 9 is fixedly installed inside the central water collection seat 8, and the interior of the central water collection seat 8 is divided into an inlet chamber 10 and a return chamber 11 by the heat insulation plate 9. The heat insulation plate 9 can effectively isolate the low-temperature cooling water in the inlet chamber 10 from the high-temperature cooling water in the return chamber 11, avoiding the mixing of hot and cold water and reducing cooling efficiency. The inlet chamber 10 is a temporary storage and distribution chamber for cooling water, providing a stable water source for each inlet channel 18. The return chamber 11 is a centralized storage chamber for the cooling water after heat exchange. The recovery chamber collects hot water from each return water channel 20 and discharges it through the return water pipe 16. A spiral cooling trough 22 is provided inside the crystallizing wheel 1, extending around the circumference of the crystallizing wheel 1 to increase the heat exchange area between the cooling water and the casting tank 2, lengthen the heat exchange path, and improve the cooling effect. An annular return water trough 24 is located inside the crystallizing wheel 1 near the inner side of the spiral cooling trough 22. The annular return water trough 24 serves as a transfer and confluence structure for the cooling water after heat exchange, collecting the hot water in the spiral cooling trough 22 and providing a unified channel for subsequent return water. The other side of the spiral cooling trough 22 is connected to the interior of the annular return water trough 24 through a drainage channel 25. The drainage channel 25 is a connection structure between the spiral cooling tank 22 and the annular return water tank 24, realizing the orderly flow of cooling water from the cooling tank to the return water tank and avoiding the stagnation of cooling water. A side positioning frame 27 is fixedly installed on one side of the crystallizing wheel 1. The side positioning frame 27 is the mounting base for the clamping mechanism 30 and the support guide wheel 28. At the same time, it plays a radial positioning role for the crystallizing wheel 1 to ensure its rotational stability. Two clamping mechanisms 30 are also provided on the side wall of the side positioning frame 27 near the crystallizing wheel 1. The clamping mechanism 30 can apply a uniform and stable clamping force to the steel strip 3 to ensure that the steel strip 3 is tightly attached to the casting tank 2, prevent the steel strip 3 from running off or falling off, and improve the sealing effect of the cavity.

[0023] In this embodiment, a stepped sealing groove 4 is provided on the side wall of the casting groove 2. The stepped sealing groove 4 serves as the mounting carrier for multi-layer seals. The stepped structure enables the layered fixing of the seals, improving the stability of the sealing structure. An elastic pressure ring 5 is fixedly installed on the upper part of the stepped sealing groove 4. The elastic pressure ring 5 has an elastic compensation function, which can adapt to the thermal expansion and contraction of the crystallizing wheel 1 during operation, fill the sealing gap, and at the same time play a role in pressing and fixing the lower layer of seals. A metal sealing ring 6 is fixedly installed in the middle of the stepped sealing groove 4. The metal sealing ring 6 has high structural rigidity, can withstand the lateral pressure of the molten metal, prevent the sealing structure from deforming, and improve the sealing reliability. A high-temperature resistant sealing ring 7 is fixedly installed on the lower part of the stepped sealing groove 4. The high-temperature resistant sealing ring 7 is directly attached to the contact area of ​​the molten metal, providing the first sealing barrier for the cavity. It can withstand the high temperature of casting and effectively block the leakage path of the molten metal.

[0024] Furthermore, an inlet ring 12 is movably mounted on one end of the central water collector 8 near the water inlet chamber 10 via a sealed bearing. The sealed bearing enables a dynamic sealing fit between the rotation of the central water collector 8 and the fixed position of the inlet ring 12, ensuring stable introduction of cooling water under rotational conditions. The inlet ring 12 serves as an external connection and guide structure for the cooling water, facilitating the water flow connection between the fixed water supply pipeline and the rotating central water collector 8. An inlet groove 13 is provided inside the inlet ring 12, acting as a temporary storage and guide groove for the cooling water, ensuring uniform dispersion of the cooling water from the inlet pipe 14. The water grille 15 enters the water inlet chamber 10. A water inlet pipe 14 is fixedly installed on one side of the bottom of the water inlet ring 12. The water inlet pipe 14 is an external access channel for cooling water and is connected to an external cooling water source to provide continuous cooling water for the entire cooling system. A water inlet grille 15 is fixedly installed on the side of the central water collector 8 near the water inlet ring 12 at a position corresponding to the water inlet tank 13. The water inlet grille 15 can filter impurities in the cooling water, prevent impurities from entering the water inlet chamber 10 and subsequent cooling channels, avoid scaling and blockage of the cooling tank and channels, and ensure long-term stable operation of the cooling system.

[0025] Furthermore, a return water pipe 16 is movably installed at one end of the central water collection base 8 near the return water chamber 11. The return water pipe 16 is the external discharge channel for the high-temperature cooling water after heat exchange, and is connected to the external cooling circulation system to realize the recycling of cooling water. Its movable installation method is adapted to the rotation condition of the central water collection base 8 to ensure smooth water return and no leakage.

[0026] Furthermore, the outer diameter of the central water collection seat 8 near the water inlet chamber 10 is connected to the inner circumference of the crystallizing wheel body 1 by several front support rods 17. The front support rods 17 serve both as structural supports connecting the central water collection seat 8 and the crystallizing wheel body 1, ensuring the rigidity of the overall structure, and as a guide channel for cooling water, achieving integration of structure and function. Each front support rod 17 has an inlet channel 18, which serves as the guide path for cooling water from the water inlet chamber 10 to the spiral cooling tank 22. The cooling water in the inlet chamber 10 is evenly distributed to each of the gradually narrowing water inlet channels 23. Several gradually narrowing water inlet channels 23 are opened on one side of the spiral cooling tank 22, and the ends of the gradually narrowing water inlet channels 23 are connected to the corresponding side water inlet channels 18. The gradually narrowing water inlet channels 23 can accelerate the cooling water, increase the flow rate of the cooling water entering the spiral cooling tank 22, enhance the heat exchange efficiency between the cooling water and the casting tank 2, and at the same time realize the uniform distribution of cooling water, ensuring that the cooling water volume of each section of the spiral cooling tank 22 is balanced.

[0027] Furthermore, the outer diameter of the central water collection seat 8 near the return water chamber 11 is connected to the inner circumference of the crystallizing wheel body 1 by several rear support rods 19. The rear support rods 19 cooperate with the front support rods 17 to achieve a symmetrical connection between the central water collection seat 8 and the crystallizing wheel body 1, ensuring the dynamic balance of the crystallizing wheel body 1 during rotation, and providing a guide channel for the cooling water after heat exchange. The rear support rods 19 are all provided with return water channels 20. The return water channels 20 are the guide path for cooling water from the annular return water tank 24 to the return water chamber 11, and the high-temperature cooling water collected in the annular return water tank 24 is concentrated and transported to the return water chamber 11. The annular return water tank 24 is connected to the end of all the return water channels 20, so that the cooling water in the annular return water tank 24 can flow back evenly and quickly through each return water channel 20, avoiding the stagnation of cooling water in the annular return water tank 24 and ensuring the smoothness of the cooling circulation.

[0028] Furthermore, a drive shaft 21 is fixedly installed at the middle of one end of the central water collection seat 8 near the water inlet ring 12, and the end of the drive shaft 21 is connected to the drive end of the geared motor. The drive shaft 21 is the core component for power transmission, which transmits the torque of the geared motor to the central water collection seat 8, thereby driving the entire crystallizing wheel 1 to rotate at a uniform speed, realizing the power input for continuous casting. Its fixed connection with the central water collection seat 8 ensures the stability and efficiency of power transmission.

[0029] Furthermore, a heat-conducting rib 26 is fixedly installed on the bottom wall of the casting tank 2, and the bottom end of the heat-conducting rib 26 extends into the interior of the spiral cooling tank 22. The heat-conducting rib 26 can quickly conduct the heat at the bottom of the casting tank 2 to the cooling water in the spiral cooling tank 22, increase the heat exchange area between the casting tank 2 and the cooling water, enhance the cooling effect, accelerate the solidification speed of the molten metal at the bottom of the casting tank 2, and ensure the solidification quality of the billet.

[0030] Furthermore, several support guide wheels 28 are uniformly fixedly installed on the inner wall of the side positioning frame 27. The support guide wheels 28 cooperate with the support wheel contact rings 29 to provide radial support and positioning for the crystallizing wheel body 1, limiting the radial runout of the crystallizing wheel body 1 during rotation. Support wheel contact rings 29 are fixedly installed on the front and rear side walls of the crystallizing wheel body 1. The support wheel contact rings 29 are the contact surfaces of the support guide wheels 28, so that the supporting force of the support guide wheels 28 is evenly applied to the crystallizing wheel body 1, ensuring its smooth rotation. The ends of the support guide wheels 28 all abut against the outer surface of the support wheel contact rings 29, forming a rolling friction fit, reducing the frictional resistance when the crystallizing wheel body 1 rotates, and avoiding component wear caused by hard contact.

[0031] Furthermore, the clamping mechanism 30 includes a crossbeam 301, which serves as the basic mounting frame for the clamping mechanism 30, providing fixing and mounting support for components such as the rotating frame 302 and the spring plate 303. The crossbeam 301 is fixedly mounted on the side wall of the side positioning frame 27 via support members, achieving a stable connection between the clamping mechanism 30 and the side positioning frame 27, ensuring a stable output of clamping force. Rotating frames 302 are movably mounted at both ends of the crossbeam 301, allowing the rotating frames 302 to swing around the crossbeam 301, thus facilitating the movement of the clamping roller 306. The position is adaptively adjusted to suit the installation and movement conditions of the steel belt 3. Spring plates 303 are fixedly installed on both sides of the inner side of the cross frame 301, and the ends of the spring plates 303 extend into the interior of the corresponding rotating frame 302. The spring plates 303 provide elastic clamping force to the clamping mechanism 30, generating elastic force through their own bending deformation, providing continuous clamping power to the clamping rollers 306. Pressure rollers 304 are fixedly installed on the inner sidewalls of the rotating frame 302, and the ends of the pressure rollers 304 abut against the surface of the spring plates 303. 04 The oscillating force of the rotating frame 302 is transmitted to the spring plate 303, and a rolling friction engagement is formed with the spring plate 303. It slides on the surface of the spring plate 303, dynamically compensating for the change in lever arm during the bending process of the spring plate 303, ensuring the uniformity of the elastic force output. A linkage frame 305 is movably installed at one end of the rotating frame 302 near the crystallizing wheel 1. The linkage frame 305 realizes the movable connection between the rotating frame 302 and the pressure wheel 306, allowing the pressure wheel 306 to adaptively rotate with the movement of the steel belt 3, while simultaneously... The force of the moving frame 302 is evenly transmitted to the pressure roller 306. The ends of the linkage frame 305 are respectively movably installed on both sides of the pressure roller 306 to ensure that the pressure roller 306 is subjected to balanced force and avoid uneven wear of the pressure roller 306 caused by unilateral force. The ends of the pressure roller 306 are all in contact with the outer surface of the steel belt 3. The pressure roller 306 is in direct contact with the steel belt 3, converting the elastic force of the spring plate 303 into a pressing force on the steel belt 3. At the same time, it rotates synchronously with the steel belt 3 to reduce frictional damage to the steel belt 3 and ensure the surface of the steel belt 3 remains intact.

[0032] Working principle: The steel strip 3 is wound into the casting groove 2 of the crystallizing wheel body 1, forming a closed cavity with the steel strip 3. The elastic pressure ring 5, metal sealing ring 6, and high-temperature resistant sealing ring 7 within the stepped sealing groove 4 form a multi-layered seal to prevent liquid leakage. After the steel strip 3 is wound, the pressure wheel 306 abuts against the outer surface of the steel strip 3. At this time, the pressure wheel 306 drives the rotating frame 302 to bend via the linkage frame 305. The bent rotating frame 302 then bends the spring plate 303 via the pressure roller 304, utilizing the bent spring plate 303 to produce… The spring force exerted by the pressure roller 304 on the clamping roller 306 in the opposite direction presses the steel strip 3 firmly onto the crystallizing wheel 1. When the pressure roller 304 bends the spring plate 303, relative sliding occurs on its surface, causing the lever arm of the spring plate 303 to change. This compensates for the changing spring force as the degree of bending changes, ensuring that the clamping roller 306 maintains a uniform and stable clamping force on the steel strip 3 throughout subsequent operations. This effectively prevents the steel strip 3 from slipping or shifting due to uneven pressure from the clamping roller 306, or from excessive clamping force. Friction occurs, and then the molten metal is poured into the closed cavity formed by the casting tank 2 and the steel strip 3 through the pouring vessel and the guide bridge. A reduction motor, in conjunction with the drive shaft 21, drives the crystallizing wheel 1 to rotate at a constant speed. The steel strip 3 follows the movement via an external drive structure. The molten metal rotates with the crystallizing wheel 1 within the cavity. At this time, cooling water is introduced through the water inlet pipe 14. The cooling water passes through the water inlet trough 13 and the water inlet grille 15 before entering the water inlet chamber 10. It then enters the spiral cooling tank 22 through the water inlet channel 18 within the front support rod 17. The gradually narrowing water inlet channel 23 will... The cooling water is accelerated by using the spiral cooling tank 22 and the heat-conducting ribs 26 to increase the heat exchange area and quickly remove the heat from the bottom of the casting tank 2. At the same time, spray pipes are added to the outside to spray the cooling medium onto the side wall of the casting tank 2, forming a double-layer cooling system. This allows the molten liquid to quickly form a billet shell and complete the solidification of the entire cross section. The cooling water after heat exchange enters the annular return water tank 24 through the drainage channel 25, then enters the return water chamber 11 through the return water channel 20, and is discharged through the return water pipe 16. Finally, the solidified billet is drawn out along the tangential direction of the casting tank 2 under the action of the ingot lifter.

[0033] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modified large-diameter crystallizing wheel, comprising a crystallizing wheel body (1), characterized in that, The crystallizing wheel (1) has a casting groove (2) along its outer circumference. A steel strip (3) is wound around the outer diameter of the casting groove (2). A central water collection seat (8) is provided at the center of the crystallizing wheel (1). A heat insulation plate (9) is fixedly installed inside the central water collection seat (8), and the interior of the central water collection seat (8) is divided into an inlet chamber (10) and a return chamber (11) by the heat insulation plate (9). A spiral cooling groove (22) is provided inside the crystallizing wheel (1). An annular return water groove (24) is provided inside the crystallizing wheel (1) near the inner side of the spiral cooling groove (22). The other side of the spiral cooling groove (22) is connected to the interior of the annular return water groove (24) through a drainage channel (25). A side positioning frame (27) is fixedly installed on one side of the crystallizing wheel (1). Two clamping mechanisms (30) are also provided on the side wall of the side positioning frame (27) near the crystallizing wheel (1).

2. The modified large-diameter crystallizing wheel according to claim 1, characterized in that, The side wall of the casting groove (2) is provided with a stepped sealing groove (4). An elastic pressure ring (5) is fixedly installed on the upper part of the stepped sealing groove (4), a metal sealing ring (6) is fixedly installed in the middle part of the stepped sealing groove (4), and a high temperature resistant sealing ring (7) is fixedly installed on the lower part of the stepped sealing groove (4).

3. The modified large-diameter crystallizing wheel according to claim 1, characterized in that, The central water collection base (8) is movably mounted with a water inlet ring (12) via a sealed bearing at one end near the water inlet chamber (10). The water inlet ring (12) has a water inlet groove (13) inside. A water inlet pipe (14) is fixedly installed on one side of the bottom of the water inlet ring (12). A water inlet grille (15) is fixedly installed on the side of the central water collection base (8) near the water inlet ring (12) at a position corresponding to the water inlet groove (13).

4. The modified large-diameter crystallizing wheel according to claim 1, characterized in that, A return water pipe (16) is movably installed at one end of the central water collection seat (8) near the return water chamber (11).

5. The modified large-diameter crystallizing wheel according to claim 1, characterized in that, The central water collection seat (8) is connected to the inner circumference of the crystallizing wheel (1) on the outer diameter of the side near the water inlet chamber (10) by several front support rods (17). Each of the front support rods (17) has a water inlet channel (18). The spiral cooling tank (22) has several tapered water inlet channels (23) on one side, and the ends of the tapered water inlet channels (23) are connected to the corresponding water inlet channels (18).

6. The modified large-diameter crystallizing wheel according to claim 1, characterized in that, The central water collection seat (8) is connected to the inner circumference of the crystallizing wheel body (1) via several rear support rods (19) on the outer diameter of the side near the return water chamber (11). The rear support rods (19) are all provided with return water channels (20), and the annular return water groove (24) is connected to the end of all return water channels (20).

7. The modified large-diameter crystallizing wheel according to claim 1, characterized in that, The central water collection seat (8) has a drive shaft (21) fixedly installed at the middle of one end near the water inlet ring (12), and the end of the drive shaft (21) is connected to the drive end of the geared motor.

8. The modified large-diameter crystallizing wheel according to claim 1, characterized in that, A heat-conducting rib (26) is fixedly installed on the bottom wall of the casting tank (2), and the bottom end of the heat-conducting rib (26) extends into the interior of the spiral cooling tank (22).

9. A modified large-diameter crystallizing wheel according to claim 1, characterized in that, A number of support guide wheels (28) are uniformly fixedly installed on the inner wall of the side positioning frame (27). Support wheel contact rings (29) are fixedly installed on the front and rear side walls of the crystallizing wheel body (1). The ends of the support guide wheels (28) all abut against the outer surface of the support wheel contact rings (29).

10. A modified large-diameter crystallizing wheel according to claim 1, characterized in that, The pressing mechanism (30) includes a cross frame (301), which is fixedly installed on the side wall of the side positioning frame (27) by a support member. Rotating frames (302) are movably installed at both ends of the cross frame (301). Spring plates (303) are fixedly installed on both sides of the interior of the cross frame (301), and the ends of the spring plates (303) extend into the interior of the corresponding rotating frames (302). Pressure rollers (304) are fixedly installed on the inner side wall of the rotating frames (302), and the ends of the pressure rollers (304) abut against the surface of the spring plates (303). A linkage frame (305) is movably installed at the end of the rotating frame (302) near the crystallizing wheel (1). The ends of the linkage frame (305) are movably installed on both sides of the pressing wheel (306), and the ends of the pressing wheel (306) abut against the outer surface of the steel strip (3).

Images