Rapid replacement device for submersed nozzle of tundish

Abstract

The utility model relates to the technical field of metallurgy continuous casting, in particular to a tundish submersed nozzle quick replacement device which comprises a rack arranged at the bottom of a tundish, and the rack is provided with an input sliding rail and an output sliding rail which are located on the same straight line. A pressing mechanism used for pressing the sliding plate upper nozzle and the submersed nozzle is arranged between the input sliding rail and the output sliding rail, the rack is further provided with a driving mechanism used for driving a new submersed nozzle to move, and an old submersed nozzle is ejected out of the pressing mechanism through the new submersed nozzle. The replacement device can achieve the purpose of stably and rapidly replacing the submersed nozzle without shutdown and continuous pouring, meanwhile, the effect of single-ladle multi-furnace continuous pouring is achieved, and the device is easy to operate, safe and reliable.

Description

Technical Field

[0001] The present application relates to the technical field of metallurgical continuous casting, and in particular to a tundish submerged nozzle quick replacement device. Background Art

[0002] At present, the tundish of domestic slab continuous casting machines often adopts an external integral submerged nozzle or an external two-section submerged nozzle. The former is easily damaged by erosion and scouring of slag, and the tundish must be replaced frequently due to damage; although the nozzle of the latter can be replaced, it is still necessary to shut down the machine, stop casting or lift the tundish when replacing the nozzle, which still causes certain losses. What is more serious is that the air intake during the steel casting process affects the steel quality. Utility Model Content

[0003] In order to overcome the problems existing in the prior art, the present application provides a tundish submerged nozzle quick replacement device.

[0004] The present application provides a tundish submerged nozzle quick replacement device that adopts the following technical solution:

[0005] A device for quickly replacing an immersion nozzle of a tundish, comprising a frame arranged at the bottom of the tundish, the frame being provided with an input slide rail and an output slide rail located in the same straight line, a clamping mechanism for clamping the nozzle on the slide plate and the immersion nozzle is arranged between the input slide rail and the output slide rail, the frame is also provided with a driving mechanism for driving the new immersion nozzle to move, and the old immersion nozzle is ejected from the clamping mechanism through the new immersion nozzle.

[0006] By adopting the above technical scheme, the driving mechanism pushes the new submerged water nozzle to move into the clamping mechanism, and the new submerged water nozzle pushes the old submerged water nozzle out of the clamping mechanism, so as to achieve the purpose of replacing the submerged water nozzle smoothly, quickly, without stopping the machine or pouring, and at the same time achieve the effect of single-bag multi-furnace continuous pouring. The device is not only simple to operate, but also safe and reliable.

[0007] Optionally, the driving mechanism includes a hydraulic cylinder, and the hydraulic cylinder is arranged on a side of the frame close to the input slide rail.

[0008] By adopting the above technical solution, the performance of the hydraulic cylinder is stable and the hydraulic power can be provided by the original hydraulic system.

[0009] Optionally, a hanging frame is rotatably connected to the frame, the hydraulic cylinder is mounted on the hanging frame, and the hanging frame is also provided with a hanging hook for hanging connection with the frame.

[0010] By adopting the above technical solution, when installing a new immersion nozzle onto the input slide rail, the hanging hook can be loosened, and then the hanging frame can be rotated to make way. After the immersion nozzle is installed, the hanging frame can be returned to its position and fixed.

[0011] Optionally, the clamping mechanism includes a pressure rod rotatably connected to the frame via a pin shaft, a downward pressure head for supporting the immersion water outlet is provided at one end of the pressure rod close to the immersion water outlet, and an elastic component for elastically pushing the pressure rod downward is provided at one end of the pressure rod away from the downward pressure head.

[0012] By adopting the above technical solution, the elastic component elastically squeezes the pressure rod, and the pressure rod presses the submerged water inlet and the upper water inlet of the slide plate tightly through the downward pressure head, thereby realizing the replacement and fixation of the new and old submerged water inlets.

[0013] Optionally, the elastic component includes a push rod vertically installed on the frame, the pressure rod is movably sleeved on the push rod, the push rod is sleeved with a spring located above the pressure rod, and a locking block for limiting the spring is provided at the top of the push rod.

[0014] By adopting the above technical solution, the spring elasticity drives the pressure rod to descend, thereby completing the elastic driving function, and the performance of the elastic component is stable.

[0015] Optionally, the distance between the pin shaft and the pressing head is smaller than the distance between the pin shaft and the elastic component.

[0016] By adopting the above technical solution, the lower pressure head can be subjected to a greater driving force, thereby further improving the degree of tightening.

[0017] Optionally, a connecting mechanism for detachable connection is provided between the frame and the tundish.

[0018] By adopting the above technical solution, the rack can be installed or removed using the connecting components.

[0019] Optionally, the connecting mechanism includes a connecting screw mounted on the frame and a connecting nut fixed on the tundish, and the connecting screw is threadedly connected to the connecting nut.

[0020] By adopting the above technical solution, the connecting screw rod and the connecting nut cooperate with each other, which facilitates the installation or disassembly of the rack.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. It can realize the purpose of replacing the submerged nozzle smoothly, quickly, without stopping the machine or pouring, and at the same time realize the effect of single-package multi-furnace continuous pouring. The device is not only simple to operate, but also safe and reliable;

[0023] 2. When installing a new immersion nozzle on the input slide rail, loosen the hook, then rotate the mounting frame to make way. After the immersion nozzle is installed, return the mounting frame to its original position and fix it.

[0024] 3. The elastic component elastically squeezes the pressure rod, and the pressure rod presses the submerged water inlet and the upper water inlet of the slide plate tightly through the downward pressure head, thereby realizing the replacement and fixation of the new and old submerged water inlets. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the installation relationship between the replacement device and the intermediate package in an embodiment of the present application.

[0026] Figure 2 It is a top view of the replacement device of an embodiment of the present application.

[0027] Figure 3 It is a side view of the replacement device of an embodiment of the present application.

[0028] Figure 4 It is a partial schematic diagram for illustrating the clamping mechanism of an embodiment of the present application.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Tundish; 10. Tundish body; 11. Seat brick; 12. Stopper rod; 2. Slide plate upper water inlet; 3. Immersed water inlet; 4. Frame; 40. Input slide rail; 41. Output slide rail; 42. Upper pressure head; 5. Connecting mechanism; 50. Connecting screw; 6. Driving mechanism; 60. Hydraulic cylinder; 61. Hanging frame; 62. Hanging hook; 7. Clamping mechanism; 70. Pressure rod; 71. Pin shaft; 72. Lower pressure head; 73. Push rod; 74. Spring; 75. Locking block. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 4 This application is described in further detail.

[0031] The present application embodiment discloses a tundish submerged nozzle quick replacement device. Figure 1 A tundish submerged nozzle quick replacement device is arranged at the bottom of the tundish 1, and the tundish 1 includes a tundish body 10, a seat brick 11 and a stopper rod 12. The slide plate upper nozzle 2 is fixed in the seat brick 11, and the submerged nozzle 3 is connected to the lower part of the slide plate upper nozzle 2. The submerged nozzle 3 is fixed and replaced by the replacement device.

[0032] Reference Figure 2 and Figure 3 The replacement device includes a frame 4, a connecting mechanism 5 arranged between the frame 4 and the bottom plate of the tundish 1, a driving mechanism 6 arranged on the frame 4 for driving the replacement of the immersion nozzle 3, and a clamping mechanism 7 arranged on the frame 4 for clamping the nozzle 2 on the slide plate and the immersion nozzle 3. An input slide rail 40 and an output slide rail 41 located on the same straight line are installed on the frame 4, and the clamping mechanism 7 is located between the input slide rail 40 and the output slide rail 41.

[0033] Reference Figure 2 and Figure 3 The new immersion nozzle 3 is installed on the input slide rail 40 and pushed to the clamping mechanism 7 by the driving mechanism 6. The old immersion nozzle 3 is pushed down to the output slide rail 41 by the clamping mechanism 7 and is transported out of the rack 4 by the output slide rail 41. An upper pressure head 42 for fixing the upper nozzle 2 of the slide plate is arranged on the top of the rack 4. The upper pressure head 42 can act on the upper nozzle 2 of the slide plate by an elastic pressure structure.

[0034] Reference Figure 1 and Figure 2 The connecting mechanism 5 includes connecting screws 50 installed at the four corners of the frame 4, and corresponding connecting nuts are fixed on the bottom surface of the bottom plate of the tundish 1. The frame 4 can be fixedly installed or disassembled by connecting the screws 50 and the connecting nuts. The driving mechanism 6 is arranged on one side of the frame 4 in the horizontal direction close to the input slide rail 40, and the transmission direction of the driving mechanism 6 is the same as the length direction of the input slide rail 40 and the output slide rail 41.

[0035] Reference Figure 2 and Figure 3 The driving mechanism 6 includes a hydraulic cylinder 60. The hydraulic source used by the hydraulic cylinder 60 is the hydraulic system of the casting machine. It is operated through a hydraulic control cabinet, and the driving stroke is designed to be 1-1.5 seconds. A mounting frame 61 is installed on the hydraulic cylinder 60. One end of the mounting frame 61 is hinged to the frame 4, and the other end of the mounting frame 61 is detachably connected to the frame 4 through a mounting hook 62. When it is necessary to install a new immersion nozzle 3 on the input slide rail 40, release the mounting hook 62 and rotate the hydraulic cylinder 60. The rotation angle is ≥80°. After the new immersion nozzle 3 is installed, it is restored to its original position.

[0036] Reference Figure 2 and Figure 4 The clamping mechanism 7 is provided with two groups and is respectively located on the left and right sides of the immersion nozzle 3. The clamping mechanism 7 includes a horizontally arranged pressure rod 70, which is rotatably connected to the frame 4 through a pin shaft 71. The distance between the pin shaft 71 and the end of the pressure rod 70 close to the immersion nozzle 3 is smaller than the distance between the pin shaft 71 and the end of the pressure rod 70 away from the immersion nozzle 3. A lower pressure head 72 for pushing the immersion nozzle 3 upward is provided at the end of the pressure rod 70 close to the immersion nozzle 3. The lower pressure head 72 is located between the input slide rail 40 and the output slide rail 41. A push rod 73 is also vertically installed in the frame 4. The end of the pressure rod 70 away from the immersion nozzle 3 is movably sleeved on the push rod 73.

[0037] Reference Figure 4A spring 74 is sleeved on the push rod 73. The spring 74 is located above the pressure rod 70 and is used to press the pressure rod 70 downward. A locking block 75 is fixed at the top of the push rod 73 and is used to limit the spring 74 from being separated from the push rod 73. When the hydraulic cylinder 60 pushes the new immersion nozzle 3 onto the lower pressure head 72, the lower pressure head 72 is pushed upward under the elastic support of the spring 74 so that the immersion nozzle 3 is tightly pressed against the upper nozzle 2 of the slide plate. In addition, due to the special position of the pin 71 relative to the two ends of the pressure rod 70, the effect of the spring 74 is more effective, and the upward pushing force of the lower pressure head 72 is greater.

[0038] The implementation principle of a device for quickly replacing an immersion nozzle of a tundish in an embodiment of the present application is as follows: the frame 4 is fixed to the bottom of the tundish 1 through a connecting mechanism 5. When the immersion nozzle 3 needs to be replaced, first loosen the hook 62, then install the new immersion nozzle 3 on the input slide rail 40, and then buckle the hook 62. Control the hydraulic cylinder 60 to work, the hydraulic cylinder 60 pushes the new immersion nozzle 3 into the clamping mechanism 7, and at the same time, the new immersion nozzle 3 pushes the old immersion nozzle 3 onto the output slide rail 41, thereby completing the replacement of the new and old immersion nozzles 3. By using this replacement device, the purpose of replacing the immersion nozzle 3 smoothly, quickly, without stopping the machine or pouring can be achieved, and the effect of continuous pouring of multiple furnaces in a single ladle can be achieved. The device is not only simple to operate, but also safe and reliable.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tundish submerged nozzle quick replacement device, characterized in that: The invention comprises a frame (4) arranged at the bottom of a tundish (1), the frame (4) being provided with an input slide rail (40) and an output slide rail (41) located on the same straight line, a clamping mechanism (7) for clamping a water inlet (2) on a slide plate and an immersion water inlet (3) between the input slide rail (40) and the output slide rail (41), the frame (4) also being provided with a driving mechanism (6) for driving a new immersion water inlet (3) to move, and the old immersion water inlet (3) being ejected from the clamping mechanism (7) through the new immersion water inlet (3).

2. The tundish submerged nozzle quick replacement device according to claim 1, characterized in that: The driving mechanism (6) comprises a hydraulic cylinder (60), and the hydraulic cylinder (60) is arranged on a side of the frame (4) close to the input slide rail (40).

3. The tundish submerged nozzle quick replacement device according to claim 2, characterized in that: The frame (4) is rotatably connected to a hanging frame (61), the hydraulic cylinder (60) is mounted on the hanging frame (61), and the hanging frame (61) is also provided with a hanging hook (62) for hooking with the frame (4).

4. The tundish submerged nozzle quick replacement device according to claim 1, characterized in that: The clamping mechanism (7) comprises a pressure rod (70) rotatably connected to the frame (4) via a pin shaft (71); one end of the pressure rod (70) close to the immersion nozzle (3) is provided with a downward pressure head (72) for supporting the immersion nozzle (3); and one end of the pressure rod (70) away from the downward pressure head (72) is provided with an elastic component for elastically pushing the pressure rod (70) downward.

5. The tundish submerged nozzle quick replacement device according to claim 4 is characterized in that: The elastic component comprises a push rod (73) vertically mounted on the frame (4); the pressure rod (70) is movably sleeved on the push rod (73); a spring (74) located above the pressure rod (70) is sleeved on the push rod (73); and a locking block (75) for limiting the spring (74) is arranged at the top end of the push rod (73).

6. The tundish submerged nozzle quick replacement device according to claim 4 or 5, characterized in that: The distance between the pin shaft (71) and the lower pressure head (72) is smaller than the distance between the pin shaft (71) and the elastic component.

7. The tundish submerged nozzle quick replacement device according to claim 1, characterized in that: A connecting mechanism (5) for detachable connection is provided between the frame (4) and the tundish (1).

8. The tundish submerged nozzle quick replacement device according to claim 7, characterized in that: The connecting mechanism (5) comprises a connecting screw (50) mounted on the frame (4) and a connecting nut fixed on the tundish (1), and the connecting screw (50) is threadedly connected to the connecting nut.

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