Steel flow control device

Abstract

The utility model discloses a steel flow control device which comprises a closed shell, a sliding plate is arranged in the closed shell, a positioning rod is arranged at the end of the sliding plate, extends out of the side wall of the closed shell and is connected with a power device, an inlet and an outlet are formed in the top and the bottom of the closed shell, a positioning groove body is formed in the center of the sliding plate, and the positioning groove body is connected with the power device. A positioning groove is formed in the top of the closed shell, a middle block is arranged in the positioning groove, fixed blocks are arranged at the top and the bottom of the closed shell, corresponding through holes are formed in the fixed blocks and the middle block, and the through holes are used for molten steel to pass through. And meanwhile, a spring is arranged on the side wall of the pressing mechanism, and the pressing mechanism is tightly jacked through the bottom, so that the size of the device is greatly reduced, and the adaptability is higher.

Description

Technical Field

[0001] The utility model relates to the field of steel flow control equipment, in particular to a steel flow control device. Background Art

[0002] In modern steelmaking and casting processes, continuous steel casting equipment is often used, which uses a crystallizer to receive the molten steel injected from the intermediate tank and solidify it into a solid billet shell according to the specified cross-sectional shape. Its structure, material and performance parameters play a decisive role in the quality of the billet and the production capacity of the casting machine. In order to adjust the flow in the steelmaking and casting process, it is necessary to use a dislocation throttling method to control the flow and flow rate of the molten steel. In the patent previously applied for by the applicant, the sliding block disclosed in the crystallizer steel liquid flow control mechanism of the authorization announcement number: CN 217252672 U is not stable enough when adjusting the flow, and it will deviate, and the flow control accuracy is not enough. The elastic clamping mechanism for the steel liquid flow control device disclosed in CN 217121730U has a large clamping structure, which increases the volume of the entire device. Utility Model Content

[0003] In order to solve the above technical problems, the utility model discloses a steel flow control device, comprising a closed shell, a sliding plate is arranged in the closed shell, a positioning rod is arranged at the end of the sliding plate, and extends from the side wall of the closed shell and is connected to a power device, and an inlet and outlet are arranged at the top and bottom of the closed shell.

[0004] A positioning groove is provided in the center of the sliding plate, an intermediate block is provided in the positioning groove, fixed blocks are provided at the top and bottom of the closed shell, and corresponding through holes are provided on the fixed blocks and the intermediate blocks, and the through holes are used for the passage of molten steel;

[0005] The end of the intermediate block is pressed on the end of the positioning slot, and a U-shaped block is provided between the other end of the intermediate block and the positioning slot. The positioning rod is threadedly connected and passes through the sliding plate and is pressed on the U-shaped block to press the U-shaped block and the intermediate block into position.

[0006] Preferably, the enclosed shell includes an upper cover plate, a middle plate and a lower cover plate, a hinge is provided at the end of the middle plate, and the hinge is respectively connected to the upper cover plate and the lower cover plate, the middle plate is a hollow structure, and a sealing ring is provided on the middle plate and between the upper cover plate and the lower cover plate, and locking nails are evenly arranged around the upper cover plate, the middle plate and the lower cover plate, and the locking nails pass through the upper cover plate, the middle plate and the lower cover plate to achieve locking and fixation.

[0007] Preferably, a clamping mechanism is provided on both sides of the middle plate, and the clamping mechanism includes an ear hole, the lower part of the ear hole protrudes from the middle plate, a spring is provided in the ear hole, a clamping bolt passes through the center of the spring, and the clamping bolt is locked to the ear hole by a nut. The ear hole protrudes from the middle plate and is provided with a notch, and the edge of the lower cover plate is provided with a protruding block, and the protruding block is pressed on the clamping bolt through the notch.

[0008] Preferably, the side wall of the sliding plate is connected with a positioning bolt, and the middle plate is provided with a waist-shaped hole, and the positioning bolt is inserted into the waist-shaped hole.

[0009] Preferably, a positioning strip is provided on the inner wall of the positioning groove, and two sides of the U-shaped clamping block are clamped on the positioning strip, and the U-shaped clamping block is close to or far away from the middle block.

[0010] Preferably, an anti-drop hook is provided on the outer side of the middle plate and is movably connected with the anti-drop hook via a screw, and a corresponding anti-drop nail is provided on the lower cover plate, and the anti-drop hook is hooked on the anti-drop nail.

[0011] Preferably, the power device is a hydraulic cylinder.

[0012] The steel flow control device proposed by the utility model has the following beneficial effects: the device is provided with a structure of a profiling block and a U-shaped clamping block, which can press and position the middle block while pushing the sliding block to move, thereby improving the accuracy of flow control; at the same time, the clamping mechanism is provided with a spring through the side wall and tightened through the bottom, which greatly reduces the volume of the device and has higher applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is an exploded view of the utility model;

[0016] Figure 3 This is a schematic diagram of the middle plate and its interior of the utility model;

[0017] Figure 4 This is a bottom schematic diagram of the middle plate of the utility model;

[0018] Figure 5 A top view of the middle block placed in the middle plate;

[0019] Figure 6 It is an exploded view of the middle plate of the utility model;

[0020] Among them, 1. upper cover plate; 2. middle plate; 3. lower cover plate; 4. sliding plate; 5. positioning rod; 6. positioning slot; 7. middle block; 8. through hole; 9. U-shaped block; 10. hinge; 11. sealing ring; 12. pull ear hole; 13. spring; 14. clamping bolt; 15. notch; 16. positioning bolt; 17. waist-shaped hole; 18. positioning strip; 19. nut; 20. protrusion; 21. anti-drop hook; 22. anti-drop nail. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] like Figure 1 , Figure 2 As shown, the utility model discloses a steel flow control device, including a closed housing. The structure of the closed housing is required for all steel flow control devices, specifically: the closed housing includes an upper cover plate 1, a middle plate 2 and a lower cover plate 3, the end of the middle plate 2 is provided with a hinge 10, the hinge 10 is respectively connected to the upper cover plate 1 and the lower cover plate 3, the upper cover plate 1 can be covered on the middle plate 2 through the hinge 10, the middle plate 2 is a hollow structure, and a sealing ring 11 is provided on the middle plate 2 and between the upper cover plate 1 and the lower cover plate 3, the upper cover plate 1, the middle plate 2 and The lower cover plate 3 is evenly arranged with locking nails around it. There may be 4 locking nails distributed on the four corners. The locking nails penetrate the upper cover plate 1, the middle plate 2 and the lower cover plate 3 to achieve locking and fixing. The three can be compressed by locking with the locking nails. At the same time, a sealing ring 11 is provided. When the third party is compressed, the internal sealing state can be guaranteed. The upper cover plate 1 is embedded with an air intake pipeline, which is used to flush argon into the sealed cavity during operation to ensure that the molten steel entering the interior is more stable and prevent internal oxidation. The above structure is a general structure and will not be further described in this application.

[0023] In the present invention, a sliding plate 4 is provided in the closed shell, and the sliding plate 4 is pressed on the lower cover plate 3 at the bottom. Since the parts in contact with the molten steel in the cavity are consumables, fixed blocks (not shown in the drawings) are provided at the top and bottom of the closed shell. Both the fixed block and the sliding block are made of refractory materials, and their fixing methods are consistent, and are consistent with the positioning structure of the middle block 7, and can be replaced, that is: Figure 6As shown, a positioning groove 6 is provided at the center of the sliding plate 4, and an intermediate block 7 is provided in the positioning groove 6. Corresponding through holes 8 are provided on the fixed block and the intermediate block 7, and the through holes 8 are used for the passage of molten steel. The end of the intermediate block 7 is pressed on the end of the positioning groove 6, and the shape of the end of the positioning groove 6 is consistent with the end of the intermediate block 7 and is pressed tightly, and a U-shaped clamping block 9 is provided between the other end of the intermediate block 7 and the positioning groove 6. The positioning rod 5 is threadedly connected and passes through the sliding plate 4 and is pressed on the U-shaped clamping block 9, so that the U-shaped clamping block and the intermediate block 7 are pressed and positioned, and the opening of the U-shaped clamping block 9 is pressed on the intermediate block 7 to achieve positioning, so as to ensure that the molten steel passes through with a large pressure to prevent deviation, and it is also easy to replace. In order to ensure the stability of the push of the U-shaped clamping block 9, a positioning strip 18 is provided on the inner wall of the positioning groove 6, and the two sides of the U-shaped clamping block 9 are clamped on the positioning strip 18.

[0024] The end of the sliding plate 4 is provided with a positioning rod 5 extending from the side wall of the closed shell and is connected to a power device, which can be a hydraulic cylinder. When the hydraulic cylinder pushes the positioning rod 5, the positioning rod 5 presses the U-shaped block 9, and further pushes the middle block 7 to achieve positioning. When it is necessary to replace the middle block 7 or the upper and lower fixed blocks, it is only necessary to loosen the U-shaped block 9, and the replacement is extremely convenient.

[0025] Its working method is: the molten steel is introduced through the upper cover, passes through the upper fixed block, the middle block 7 and the lower fixed block, and finally discharged from the outlet of the lower cover plate 3, and the sliding plate 4 is pushed by the hydraulic tool. The side wall of the sliding plate 4 is connected with a positioning bolt 16, and the middle plate 2 is provided with a waist-shaped hole 17. The positioning bolt 16 is inserted into the waist-shaped hole 17. The sliding path of the sliding plate 4 is determined by the positioning bolt 16. The flow rate of the molten steel is adjusted by adjusting the overlap of the middle block 7 and the through hole 8 on the fixed block. A sealing plug can be set on the waist-shaped hole 17 to seal it, or the waist-shaped hole 17 can be set to a non-perforated design.

[0026] When the device is working, it is extremely important to increase the pressure between the upper and lower cover plates 3 and the middle block 7 and the fixed block to prevent the molten steel from flowing out from between the sliding block and the fixed block. Therefore, a clamping mechanism is provided on both sides of the middle plate 2. The clamping mechanism includes a pull ear hole 12. The lower part of the pull ear hole 12 protrudes from the middle plate 2. A spring 13 is provided in the pull ear hole 12. A clamping bolt 14 passes through the center of the spring 13. The clamping bolt 14 is locked with the pull ear hole 12 by a nut 19. Figure 4As shown, turning the middle plate 2 over can be seen that the ear hole 12 protrudes from the middle plate 2 and is provided with a notch 15, and the edge of the lower cover plate 3 is provided with a protruding block 20, and the protruding block 20 passes through the notch 15 and is pressed on the clamping bolt 14. After the upper and lower cover plates 3 are locked by the locking nails, the protruding block 20 of the lower cover plate 3 is pressed on the clamping bolt 14, and the clamping bolt 14 has the effect of the spring 13. When the clamping bolt 14 is locked, the spring 13 can feedback whether it is tightened to ensure a stable assembly.

[0027] When disassembling and assembling the equipment, when the four locking nails are pulled out, the lower cover plate 3 at the bottom will fall off. In order to prevent convenient operation during the disassembly and assembly process, the outer side of the middle plate 2 is provided with an anti-drop hook 21 movably connected by screws, and the lower cover plate 3 is provided with corresponding anti-drop nails 22. The anti-drop hook 21 is hooked on the anti-drop nail 22. Even if the locking nails are removed, the lower cover plate 3 will be hooked by the anti-drop hook 21 to prevent injuries caused by misoperation.

Claims

1. A steel flow control device, comprising a closed housing, a sliding plate arranged in the closed housing, a positioning rod arranged at the end of the sliding plate extending from the side wall of the closed housing and connected to a power device, an inlet and an outlet arranged at the top and bottom of the closed housing, characterized in that: A positioning groove is provided in the center of the sliding plate, an intermediate block is provided in the positioning groove, fixed blocks are provided at the top and bottom of the closed shell, and corresponding through holes are provided on the fixed blocks and the intermediate blocks, and the through holes are used for the passage of molten steel; The end of the intermediate block is pressed on the end of the positioning slot, and a U-shaped block is provided between the other end of the intermediate block and the positioning slot. The positioning rod is threadedly connected and passes through the sliding plate and is pressed on the U-shaped block to press the U-shaped block and the intermediate block into position.

2. The steel flow control device according to claim 1, characterized in that: The sealed shell includes an upper cover plate, a middle plate and a lower cover plate, a hinge is provided at the end of the middle plate, and the hinge is respectively connected to the upper cover plate and the lower cover plate, the middle plate is a hollow structure, and a sealing ring is provided on the middle plate and between the upper cover plate and the lower cover plate, and locking nails are evenly arranged around the upper cover plate, the middle plate and the lower cover plate, and the locking nails penetrate the upper cover plate, the middle plate and the lower cover plate to achieve locking and fixation.

3. The steel flow control device according to claim 2, characterized in that: A clamping mechanism is provided on both sides of the middle plate, and the clamping mechanism includes an ear hole, the lower part of the ear hole protrudes from the middle plate, a spring is provided in the ear hole, a clamping bolt passes through the center of the spring, and the clamping bolt is locked to the ear hole by a nut. The ear hole protrudes from the middle plate and is provided with a notch, and the edge of the lower cover plate is provided with a protruding block, and the protruding block is pressed on the clamping bolt through the notch.

4. The steel flow control device according to claim 2, characterized in that: The side wall of the sliding plate is connected with a positioning bolt, and the middle plate is provided with a waist-shaped hole, and the positioning bolt is inserted into the waist-shaped hole.

5. The steel flow control device according to claim 1, characterized in that: The inner wall of the positioning groove is provided with a positioning strip, and the two sides of the U-shaped clamping block are clamped on the positioning strip, and the U-shaped clamping block is close to or away from the middle block.

6. The steel flow control device according to claim 2, characterized in that: The outer side of the middle plate is provided with an anti-drop hook movably connected by a screw, and the lower cover plate is provided with a corresponding anti-drop nail, and the anti-drop hook is hooked on the anti-drop nail.

7. The steel flow control device according to claim 1, characterized in that: The power device is a hydraulic cylinder.

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