A quick-connect device for bottom blowing joint of steel ladle

Abstract

A quick-connect device for bottom-blowing joints in steel ladles includes a cross-positioning mechanism, an upper air inlet, a lower air outlet, a lifting mechanism, and a follower mechanism. The cross-positioning mechanism is located at the bottom of the steel ladle. The upper air inlet is located at the bottom end of the cross-positioning mechanism. The follower mechanism is mounted on the steel ladle car. The lifting mechanism is mounted on the follower mechanism. The lower air outlet is mounted on the lifting mechanism and is located below the upper air inlet. This invention improves the efficiency and safety of inert gas connection for steel ladles.

Description

Technical Field

[0001] This utility model relates to a quick-connect device, and more particularly to a device that can ensure that the ladle can be quickly connected to inert gas, belonging to the technical field of quick-connect equipment for bottom blowing joints. Background Technology

[0002] During steel production, the molten steel in the ladle needs to be stirred by bottom-blowing inert gas to promote more uniform temperature and composition, and improve the efficiency of flotation and removal of inclusions. Currently, the bottom-blowing gas connection of the ladle relies on manual operation, with workers operating next to the ladle car, extremely close to the ladle. This operation is time-consuming and labor-intensive, and there is a risk of burns or injuries from splashed molten steel or falling slag. Therefore, a device is needed to assist workers in efficiently connecting the ladle to the ladle car with inert gas, thereby improving the efficiency of inert gas connection and reducing risks. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a quick-connect device for bottom blowing joints of steel ladles, which can not only reduce the labor intensity of workers, but also improve the docking efficiency of inert gas in steel ladles.

[0004] The problem described in this utility model is solved by the following technical solution: A quick-connect device for bottom blowing joints in steel ladles includes a cross positioning mechanism, an upper air inlet, a lower air outlet, a lifting part, and a follower part. The cross positioning mechanism is located at the bottom of the steel ladle. The upper air inlet is located at the bottom end of the cross positioning mechanism. The follower part is located on the steel ladle car. The lifting part is located on the follower part. The lower air outlet is located on the lifting part and is situated below the upper air inlet.

[0005] The aforementioned quick-connect device for bottom blowing joints of steel ladles includes a cross positioning mechanism comprising a cross and a vertical positioning rod; the cross is disposed on the bottom end face of the steel ladle; and vertical positioning rods are symmetrically disposed at the four corners of the bottom end face of the cross.

[0006] The aforementioned quick-connect device for bottom blowing of the ladle includes an air inlet cylinder, a first upper ring, a first upper cylinder, a second upper ring, a second upper cylinder, a third upper ring, and a third upper cylinder. The air inlet cylinder is located at the center of the bottom end face of the cross, and a connector is provided on the side wall of the air inlet cylinder. The connector of the air inlet cylinder is connected to the inert gas interface of the ladle through a connecting pipe. The inner wall of the first upper ring is connected to the bottom end of the outer wall of the air inlet cylinder. The top end face of the first upper cylinder is connected to the outer edge of the bottom end face of the first upper ring. The inner wall of the second upper ring is connected to the bottom end of the outer wall of the first upper cylinder, and the top end face of the second upper cylinder is connected to the outer edge of the bottom end face of the second upper ring. The inner wall of the third upper ring is connected to the bottom end of the outer wall of the second upper cylinder, and the top end face of the third upper cylinder is connected to the outer edge of the bottom end face of the third upper ring.

[0007] The aforementioned quick-connect device for bottom blowing of steel ladle includes a follower part comprising a chassis, a top ring, a shifting plate, and a connecting cylinder; the chassis is disposed on the top surface of the steel ladle car; the connecting cylinder is disposed at the edge of the top surface of the chassis; the outer edge of the bottom end face of the top ring is connected to the top surface of the connecting cylinder; the shifting plate is located between the top ring and the chassis, and the diameter of the shifting plate is larger than the inner diameter of the top ring and smaller than the inner diameter of the connecting cylinder.

[0008] The aforementioned quick-connect device for bottom blowing of a steel ladle includes a first disc, a second disc, a third disc, a conical limiting block, and a gas delivery pipe in the lower air outlet section. The second disc is located at the center of the top surface of the third disc, and the first disc is located at the center of the top surface of the second disc. The diameter of the first disc is equal to the inner diameter of the first upper cylinder, the diameter of the second disc is equal to the inner diameter of the second upper cylinder, and the diameter of the third disc is equal to the inner diameter of the third upper cylinder. Sealing rings are provided on the top surfaces of the first, second, and third discs. The smallest diameter end of the conical limiting block is connected to the bottom surface of the third disc, and the largest diameter end of the conical limiting block is equal to the minimum distance between two opposing vertical positioning rods. A through hole is provided at the center of the assembly of the first, second, and third discs, and the gas delivery pipe passes through this through hole. The bottom end of the gas delivery pipe is connected to an inert gas source via a pipe.

[0009] The aforementioned quick-connect device for bottom blowing of steel ladles includes a lifting component and a guide component in its lifting part. There are two lifting components and two guide components, both disposed on the top surface of the transfer plate. The lifting component includes a hydraulic cylinder and a spring. The housing of the hydraulic cylinder is disposed on the top surface of the transfer plate, and the end of its piston rod is connected to the bottom end of the spring, while the top end of the spring is connected to the bottom end face of the conical limiting block. The guide component includes a guide rod and a guide cylinder. The guide cylinder is disposed on the top surface of the transfer plate, and the guide rod is inserted into a hole at the top end of the guide cylinder, with the top end of the guide rod connected to the bottom end face of the conical limiting block.

[0010] This invention enables the upper air inlet and lower air outlet to be quickly and accurately aligned through the cooperation of a cross positioning mechanism and a follower component; the lifting component allows the upper air inlet and lower air outlet to quickly connect and transport inert gas; and the contact and pressing of each upper ring with the disc ensures the sealing of the inert gas, while the sealing ring further improves the sealing performance, preventing leakage during the transmission of inert gas. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a downward angle; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention at an elevation angle.

[0012] The list of labels in the diagram is as follows: 1. Cross, 2. Vertical positioning rod, 3. Air inlet cylinder, 4. First upper ring, 5. First upper cylinder, 6. Second upper ring, 7. Second upper cylinder, 8. Third upper ring, 9. Third upper cylinder, 10. Chassis, 11. Top ring, 12. Transfer plate, 13. First disc, 14. Second disc, 15. Third disc, 16. Conical limiting block, 17. Air supply pipe, 18. Lifting component, 19. Guide component. Detailed Implementation

[0013] See Figure 1 and Figure 2 This utility model includes a cross-positioning mechanism, an upper air inlet, a lower air outlet, a lifting mechanism, and a follower mechanism. The cross-positioning mechanism is located at the bottom of the ladle. The cross-positioning mechanism and the follower mechanism cooperate to align the upper air inlet and the lower air outlet. The upper air inlet is located at the bottom of the cross-positioning mechanism. The follower mechanism is located on the ladle car. The lifting mechanism is located on the follower mechanism. The lower air outlet is located on the lifting mechanism and is positioned below the upper air inlet. The function of the lifting mechanism is to allow the lower air outlet to move upward and connect with the upper air inlet.

[0014] The cross positioning mechanism includes a cross 1 and vertical positioning rods 2; the cross 1 is set on the bottom end face of the steel ladle; vertical positioning rods 2 are symmetrically arranged at the four corners of the bottom end face of the cross 1; when the four vertical positioning rods 2 move downward, they will push the conical limiting block 16 to move until the conical limiting block 16 moves to the center of each vertical positioning rod 2. At this time, the axis of the conical limiting block 16 is aligned with the air inlet cylinder 3, and the top of the air supply pipe 17 is also aligned with the air inlet cylinder 3.

[0015] The upper air intake section includes an air intake cylinder 3, a first upper ring 4, a first upper cylinder 5, a second upper ring 6, a second upper cylinder 7, a third upper ring 8, and a third upper cylinder 9. The air intake cylinder 3 is located at the center of the bottom end face of the cross 1, and a connector is provided on the side wall of the air intake cylinder 3. The connector of the air intake cylinder 3 is connected to the inert gas interface of the ladle via a connecting pipe. The inner wall of the first upper ring 4 is connected to the bottom end of the outer wall of the air intake cylinder 3. The top surface of the first upper cylinder 5 is connected to the bottom surface of the first upper ring 4. The outer edge is connected; the inner wall of the second upper ring 6 is connected to the bottom end of the outer wall of the first upper cylinder 5, and the top end of the second upper cylinder 7 is connected to the outer edge of the bottom end face of the second upper ring 6; the inner wall of the third upper ring 8 is connected to the bottom end of the outer wall of the second upper cylinder 7, and the top end face of the third upper cylinder 9 is connected to the outer edge of the bottom end face of the third upper ring 8; the combination of each upper ring and upper cylinder is a step, and the inner wall of each step is sealed by the disk below, thereby preventing the leakage of inert gas.

[0016] The following part includes a chassis 10, a top ring 11, a shifting plate 12, and a connecting cylinder; the chassis 10 is disposed on the top surface of the ladle car; the connecting cylinder is disposed at the edge of the top surface of the chassis 10; the outer edge of the bottom end surface of the top ring 11 is connected to the top surface of the connecting cylinder; the shifting plate 12 is located between the top ring 11 and the chassis 10, and the diameter of the shifting plate 12 is larger than the inner diameter of the top ring 11 and smaller than the inner diameter of the connecting cylinder; the shifting plate 12 can move horizontally between the top ring 11 and the chassis 10 at will, thereby cooperating with the horizontal movement of the conical limiting block 16, ensuring that when the conical limiting block 16 moves horizontally, the lifting part at the bottom end can adaptably move horizontally accordingly.

[0017] The lower gas outlet section includes a first disc 13, a second disc 14, a third disc 15, a conical limiting block 16, and a gas delivery pipe 17. The second disc 14 is located at the center of the top surface of the third disc 15, and the first disc 13 is located at the center of the top surface of the second disc 14. The diameter of the first disc 13 is equal to the inner diameter of the first upper cylinder 5, the diameter of the second disc 14 is equal to the inner diameter of the second upper cylinder 7, and the diameter of the third disc 15 is equal to the inner diameter of the third upper cylinder 9. When the first disc 13 moves upward, it can press against the bottom surface of the first upper ring for sealing. Similarly, the second and third discs below press against the second and third upper rings respectively and are sealed by sealing rings. This ensures that the inert gas output from the gas delivery pipe 17 will not overflow at the gap between the discs and the upper rings.

[0018] A sealing ring is provided on the top surface of the first disk 13, the second disk 14, and the third disk 15; the sealing ring provides a seal for the gap between the disk and the upper ring; the smallest diameter end of the conical limiting block 16 is connected to the bottom end face of the third disk 15, and the diameter of the largest diameter end of the conical limiting block 16 is equal to the minimum distance between the two opposing vertical positioning rods 2; this ensures that when each vertical positioning rod 2 completely passes through the side of the conical limiting block 16, the outer edge of the largest diameter of the conical limiting block 16 just contacts the outer wall of each vertical positioning rod 2; a through hole is provided in the center of the assembly of the first disk 13, the second disk 14, and the third disk 15, and the gas supply pipe 17 passes through this through hole, and the bottom end of the gas supply pipe 17 is connected to an inert gas source through a pipe.

[0019] The lifting section includes a lifting component 18 and a guide component 19; there are two lifting components 18 and two guide components 19, both of which are disposed on the top surface of the shifting plate 12; the lifting component 18 includes a hydraulic cylinder and a spring; the housing of the hydraulic cylinder is disposed on the top surface of the shifting plate 12, and the end of its piston rod is connected to the bottom end of the spring, and the top end of the spring is connected to the bottom end face of the conical limiting block 16; when the hydraulic cylinder extends its piston rod, it can drive the lower air outlet part upward, and the presence of the spring provides a buffer for the force of the hydraulic cylinder, avoiding a hard impact between the disc and the upper ring; the guide component 19 includes a guide rod and a guide cylinder; the guide cylinder is disposed on the top surface of the shifting plate 12, and the guide rod is inserted into the hole at the top end of the guide cylinder, and the top end of the guide rod is connected to the bottom end face of the conical limiting block 16; the function of the guide component 19 is to provide guidance for the lifting and lowering of the lower air outlet part, ensuring its reliable lifting and lowering.

[0020] Operating principle: When the ladle is moved onto the ladle car by the overhead crane, the vertical positioning rod 2 at its bottom slowly descends, pushing the inclined surface of the conical limit block to automatically correct itself. After the vertical positioning rod 2 is in place, the axis of the conical limit block coincides with the axis of the air inlet cylinder. At this time, the top of the air supply pipe 17 is aligned with the air inlet cylinder 3. Then, the hydraulic cylinder is activated, driving each disc and the air supply pipe 17 upward. After each disc is aligned with the upper ring above, the inert gas is supplied. It enters the air inlet cylinder 3 through the air supply pipe, and then enters the ladle through the joints and pipes on the side wall of the air inlet cylinder 3 and the air connector at the bottom of the ladle. After the operation is completed, the input of inert gas is turned off, and the hydraulic cylinder is reset.

Claims

1. A ladle bottom blowing connector quick connecting device, characterized in that: It includes a cross-shaped positioning mechanism, an upper air intake section, a lower air outlet section, a lifting section, and a follower section; the cross-shaped positioning mechanism is located at the bottom of the ladle; the upper air intake section is located at the bottom end of the cross-shaped positioning mechanism; the follower section is located on the ladle car; the lifting section is located on the follower section; the lower air outlet section is located on the lifting section and is located below the upper air intake section; the cross-shaped positioning mechanism includes a cross (1) and a vertical positioning rod (2); the cross (1) is located on the bottom end face of the ladle; the bottom of the cross (1) A vertical positioning rod (2) is symmetrically arranged at each of the four corners of the end face; the follower part includes a chassis (10), a top ring (11), a shifting plate (12) and a connecting cylinder; the chassis (10) is set on the top surface of the ladle car; the connecting cylinder is set at the edge of the top surface of the chassis (10); the outer edge of the bottom end face of the top ring (11) is connected to the top surface of the connecting cylinder; the shifting plate (12) is located between the top ring (11) and the chassis (10), and the diameter of the shifting plate (12) is larger than the inner diameter of the top ring (11), and the diameter of the shifting plate (12) is smaller than the inner diameter of the connecting cylinder.

2. The quick-connect device for bottom blowing joint of ladle according to claim 1, characterized in that: The upper air intake section includes an air intake cylinder (3), a first upper ring (4), a first upper cylinder (5), a second upper ring (6), a second upper cylinder (7), a third upper ring (8), and a third upper cylinder (9); the air intake cylinder (3) is located at the center of the bottom end face of the cross (1), and a connector is provided on the side wall of the air intake cylinder (3). The connector of the air intake cylinder (3) is connected to the inert gas interface of the ladle through a connecting pipe; the inner wall of the first upper ring (4) is connected to the air intake cylinder (3). The bottom end of the outer wall is connected; the top end of the first upper cylinder (5) is connected to the outer edge of the bottom end of the first upper ring (4); the inner wall of the second upper ring (6) is connected to the bottom end of the outer wall of the first upper cylinder (5), and the top end of the second upper cylinder (7) is connected to the outer edge of the bottom end of the second upper ring (6); the inner wall of the third upper ring (8) is connected to the bottom end of the outer wall of the second upper cylinder (7), and the top end of the third upper cylinder (9) is connected to the outer edge of the bottom end of the third upper ring (8).

3. The quick-connect device for bottom blowing joint of steel ladle according to claim 2, characterized in that: The lower air outlet section includes a first disc (13), a second disc (14), a third disc (15), a conical limiting block (16), and an air supply pipe (17); the second disc (14) is located at the center of the top surface of the third disc (15), and the first disc (13) is located at the center of the top surface of the second disc (14); the diameter of the first disc (13) is equal to the inner diameter of the first upper cylinder (5), the diameter of the second disc (14) is equal to the inner diameter of the second upper cylinder (7), and the diameter of the third disc (15) is equal to the inner diameter of the third upper cylinder (9); the first disc (14) is located at the center of the top surface of the second disc (15), and the second disc (14) is located at the center of the top surface of the second disc (15); the second disc (14) is located at the center of the top surface of the third disc (15), and the third disc (15) is located at the center of the top surface of the second disc (14); the diameter of the first disc (15) is equal to the inner diameter of the third upper cylinder (9); the second disc (14) is located at the center of the top surface of the third disc (15), and the third disc (16) is located at the center of the top surface of the second disc (15). A sealing ring is provided on the top surface of the first disc (13), the second disc (14) and the third disc (15); the smallest diameter end of the conical limiting block (16) is connected to the bottom end of the third disc (15), and the diameter of the largest diameter end of the conical limiting block (16) is equal to the minimum distance between the two opposing vertical positioning rods (2); a through hole is provided in the center of the assembly of the first disc (13), the second disc (14) and the third disc (15), and the gas supply pipe (17) passes through this through hole, and the bottom end of the gas supply pipe (17) is connected to the inert gas source through a pipe.

4. The quick-connect device for bottom blowing joint of steel ladle according to claim 3, characterized in that: The lifting part includes a lifting component (18) and a guide component (19); there are two lifting components (18) and two guide components (19), and they are both set on the top surface of the transfer plate (12); the lifting component (18) includes a hydraulic cylinder and a spring; the housing of the hydraulic cylinder is set on the top surface of the transfer plate (12), and the end of its piston rod is connected to the bottom end of the spring, and the top end of the spring is connected to the bottom end face of the conical limiting block (16); the guide component (19) includes a guide rod and a guide cylinder; the guide cylinder is set on the top surface of the transfer plate (12), and the guide rod is inserted into the hole at the top end of the guide cylinder, and the top end of the guide rod is connected to the bottom end face of the conical limiting block (16).

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