Stopper rod for continuous casting

Abstract

The utility model discloses a stopper rod for continuous casting, which relates to the field of continuous casting production tools, and comprises a stopper rod with one end inserted in a quick clamping sleeve, an inserting groove arranged on the stopper rod, and a through groove arranged on the quick clamping sleeve and corresponding to the inserting groove; the periphery of the quick clamping sleeve is sleeved with the control sleeve, the control sleeve is connected with the quick clamping sleeve through a guide frame, the guide frame sequentially penetrates through the through groove and the inserting groove, a tension spring is arranged between the guide frame and the quick clamping sleeve, and a guide plate is arranged on the peripheral surface of the control sleeve; the limiting mechanism is arranged on the periphery of the fast clamping sleeve in a sleeving mode, the limiting mechanism comprises a plurality of return stroke blocks and a plurality of fixing blocks which are arranged at intervals in the circumferential direction, springs are arranged between the return stroke blocks and the fixing blocks, the limiting mechanism further comprises a positioning rod arranged in a sliding mode, and the arrangement direction of the positioning rod is parallel to the axial direction of the control sleeve; one end of the positioning rod is inserted and matched with the end face of the control sleeve; the stopper rod for continuous casting can solve the problems of quick replacement and stable connection.

Description

Technical Field

[0001] The utility model belongs to the field of continuous casting production tools, and more specifically relates to a stopper rod for continuous casting. Background Art

[0002] In modern steel production, continuous casting has become a mainstream technology in the steelmaking industry due to its efficient and continuous production methods. The stopper rod plays a vital role in the continuous casting process. It not only controls the flow of molten steel from the tundish to the continuous casting mold, but also affects the liquid level in the mold. This is crucial for ensuring the quality of the continuous casting billets and the stability of production. However, existing stopper rod technology has certain functional limitations, which are mainly manifested in the following aspects:

[0003] First, the structural design of existing stopper rods is often too simple. Although this simplified design meets basic usage requirements to a certain extent, its single functionality exposes its shortcomings when faced with complex continuous casting process requirements. For example, when it is necessary to precisely control the flow of molten steel or cope with different production conditions, the existing stopper rods may not provide sufficient flexibility and adaptability, thereby affecting the smooth progress of the continuous casting process.

[0004] Secondly, in the prior art, the connection and disassembly operations between the stopper rod and the external lifting equipment are usually complicated. During the continuous casting production process, the stopper rod may need to be replaced or maintained regularly to ensure its normal operation. However, the existing connection and disassembly process often requires a lot of manpower and time, which not only reduces production efficiency, but may also cause safety accidents due to improper operation.

[0005] In addition, although some structures that can realize the rapid installation and removal of the stopper rod have appeared in the prior art, these structures often sacrifice the stability of the connection while pursuing speed. In this case, the stability of the stopper rod during the continuous casting process cannot be guaranteed. At the very least, the stopper rod may fall off, resulting in loss of refractory material costs. At worst, serious safety accidents may occur, posing a threat to the life safety of the operator. Utility Model Content

[0006] The purpose of the utility model is to provide a stopper rod for continuous casting in view of the deficiencies in the prior art, which can solve the problems of rapid replacement and stable connection.

[0007] In order to achieve the above-mentioned object, the utility model provides a stopper rod for continuous casting, comprising:

[0008] A stopper rod, one end of which is inserted into the interior of the quick-release sleeve, the stopper rod is provided with a plug-in slot, and the quick-release sleeve is provided with a through slot corresponding to the plug-in slot;

[0009] A control sleeve is sleeved on the outer periphery of the quick-release sleeve, and the control sleeve is connected to the quick-release sleeve through a guide frame. The guide frame sequentially passes through the through slot and the plug-in slot. A tension spring is provided between the guide frame and the quick-release sleeve. A guide plate is provided on the outer peripheral surface of the control sleeve. When the guide frame needs to be pulled out of the through slot and the plug-in slot, the control sleeve is rotated to push the guide frame outward through the guide plate.

[0010] A limiting mechanism is sleeved on the outer circumference of the quick-clamp sleeve, and the limiting mechanism includes a plurality of return blocks and a plurality of fixed blocks arranged at intervals along the circumferential direction, a spring is arranged between the return block and the fixed block, and the limiting mechanism also includes a slidably arranged positioning rod, the setting direction of the positioning rod is parallel to the axial direction of the control sleeve, one end of the positioning rod is plugged into and matched with the end face of the control sleeve, when the control sleeve needs to be fixed, the spring is in a non-extrusion state, and the positioning rod is plugged into and matched with the control sleeve, when the control sleeve needs to be rotated, the two ends of the spring are squeezed by the return block and the fixed block, and the positioning rod is detached from the control sleeve.

[0011] Optionally, the limiting mechanism includes a positioning sleeve and a limiting sleeve mounted on the quick-clamp sleeve, the positioning sleeve is arranged between the limiting sleeve and the control sleeve, the return block is evenly arranged on the limiting sleeve, the fixed block is evenly arranged on the quick-clamp sleeve, and the limiting sleeve is also provided with a plurality of limiting holes that are engaged with the positioning rod, and the positioning sleeve is fixedly connected to the positioning rod.

[0012] Optionally, the limiting mechanism also includes a fixing plate, which is arranged on the side of the limiting sleeve facing the control sleeve, and the fixing plate is connected to the quick-clamp sleeve. The middle part of the positioning rod protrudes toward the periphery to form a supporting surface, and a push spring is arranged between the supporting surface and the fixing plate. The push spring is sleeved on the outer periphery of the positioning rod, and the positioning rod passes through both sides of the fixing plate.

[0013] Optionally, a plurality of positioning grooves are provided on one end of the control sleeve facing the fixing plate, and the positioning grooves are plug-fitted with one end of the positioning rod.

[0014] Optionally, a plurality of anti-slip strips are provided on the outer periphery of the limiting sleeve.

[0015] Optionally, the control sleeve includes two parallel ring bodies, an annular gap is provided between the two ring bodies, the guide frame is a cross structure, and the four ends of the guide frame pass through the control sleeve through plug-in rods and are plugged into the plug-in slots.

[0016] Optionally, a plurality of mounting plates are circumferentially provided at one end of the quick-release sleeve, and each mounting plate is provided with a mounting hole.

[0017] Optionally, a hollow cavity is provided in the stopper rod, an air inlet connected to the hollow cavity is provided at one end of the stopper rod, a stopper head is provided at the other end of the stopper rod, a plurality of guide holes are provided on the side wall of the stopper rod, and a quick-lock rod cooperating with the control sleeve is provided on the stopper rod.

[0018] Optionally, the guide hole is configured as a conical structure.

[0019] The utility model provides a stopper rod for continuous casting, which has the following beneficial effects:

[0020] 1. The continuous casting stopper rod realizes the rapid replacement of the entire stopper rod through the combination of the control sleeve, quick-clamping sleeve, through slot, plug-in mechanism, guide frame and guide plate. The movable sleeve of the control sleeve is arranged outside the quick-clamping sleeve, so that the stopper rod can be quickly connected or removed from the lifting equipment. The structural design of the guide plate enables the guide frame to drive the plug-in rod to disengage from the plug-in slot when rotating, thereby realizing the rapid replacement of the stopper rod.

[0021] 2. The continuous casting stopper rod realizes a stable connection of the stopper rod through a combination of components such as a limiting hole, a return block, a spring, a fixing block, a fixing plate, a positioning rod, a positioning groove, a positioning sleeve and a limiting sleeve. The provision of an anti-slip strip increases the friction force on the outer surface of the limiting sleeve, thereby improving the stability during operation. The provision of a push spring enables the positioning rod to automatically reset, thereby forming a stable limit for the positioning rod to the control sleeve. The push of the spring resets the return block and the limiting sleeve, so that the limiting sleeve limits the positioning rod, thereby ensuring the stability of the connection structure.

[0022] 3. The continuous casting stopper rod realizes efficient delivery of argon to the inner side of the stopper rod through the combination of the stopper rod, the stopper head, the guide hole and the air inlet. The setting of the guide hole enables the argon gas to effectively wash away the solid impurities on the inner wall of the nozzle, thereby improving the quality of the molten steel. The guide hole with a conical structure design can effectively prevent solid impurities from entering the interior of the stopper rod from the guide hole, thereby preventing the guide hole from being blocked.

[0023] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0025] Figure 1 A schematic structural diagram of a stopper rod for continuous casting according to an embodiment of the utility model is shown.

[0026] Figure 2 Shown Figure 1 Enlarged view of point A.

[0027] Figure 3 A longitudinal sectional view of a stopper rod for continuous casting according to an embodiment of the present utility model is shown.

[0028] Figure 4 Shown Figure 3 Enlarged view of point B.

[0029] Figure 5 Shown Figure 3 Enlarged view of point C.

[0030] Figure 6 A transverse cross-sectional view of a stopper rod for continuous casting according to an embodiment of the present utility model is shown.

[0031] Description of reference numerals:

[0032] 1. Stopper rod; 2. Stopper rod head; 3. Guide hole; 4. Air inlet; 5. Quick-release rod; 6. Limit hole; 7. Return block; 8. Spring; 9. Fixed block; 10. Fixed plate; 11. Positioning rod; 12. Positioning slot; 13. Positioning sleeve; 14. Limit sleeve; 15. Anti-slip strip; 16. Push spring; 17. Control sleeve; 18. Quick-release sleeve; 19. Through slot; 20. Guide frame; 21. Guide plate; 22. Mounting plate; 23. Mounting hole; 24. Connecting rod; 25. Connecting slot; 26. Tension spring. DETAILED DESCRIPTION

[0033] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0034] like Figures 1 to 6 As shown, the utility model provides a stopper rod for continuous casting, comprising:

[0035] One end of the stopper rod 1 is inserted into the inside of the quick-release sleeve 18. The stopper rod 1 is provided with an inserting groove 25, and the quick-release sleeve 18 is provided with a through groove 19 corresponding to the inserting groove 25.

[0036] The control sleeve 17 is sleeved on the outer periphery of the quick-release sleeve 18. The control sleeve 17 is connected to the quick-release sleeve 18 through a guide frame 20. The guide frame 20 passes through the through slot 19 and the plug-in slot 25 in sequence. A tension spring 26 is provided between the guide frame 20 and the quick-release sleeve 18. A guide plate 21 is provided on the outer periphery of the control sleeve 17. When it is necessary to pull the guide frame 20 out of the through slot 19 and the plug-in slot 25, the control sleeve 17 is rotated to push the guide frame 20 outward through the guide plate 21.

[0037] The limiting mechanism is sleeved on the outer circumference of the quick-release sleeve 18. The limiting mechanism includes a plurality of return blocks 7 and a plurality of fixed blocks 9 arranged at intervals along the circumferential direction. A spring 8 is arranged between the return block 7 and the fixed block 9. The limiting mechanism also includes a sliding positioning rod 11. The setting direction of the positioning rod 11 is parallel to the axial direction of the control sleeve 17. One end of the positioning rod 11 is plugged into the end face of the control sleeve 17. When the control sleeve 17 needs to be fixed, the spring 8 is in a non-extrusion state, and the positioning rod 11 is plugged into the control sleeve 17. When the control sleeve 17 needs to be rotated, the two ends of the spring 8 are squeezed by the return block 7 and the fixed block 9, and the positioning rod 11 is disengaged from the control sleeve 17.

[0038] Specifically, one end of the stopper rod 1 is inserted into the quick-clamping sleeve 18, and then the two are fixed by the control sleeve 17, the limit sleeve 14, the positioning sleeve 13 and the guide frame 20; since a spring 8 is provided between the return block 7 and the fixed block 9, when the limit sleeve 14 is not rotated, the limit sleeve 14 always rests on the return block 7 because of the spring 8, so that the limit hole 6 on the limit sleeve 14 and the positioning rod 11 remain in a misaligned state, and the positioning rod 11 can only be inserted into the positioning groove 12 of the control sleeve 17. When the through groove 19 of the quick-clamping sleeve 18 is connected with the plug-in groove 25 of the quick-clamping rod 5, the plug-in rod 24 on the guide frame 20 can be inserted into the plug-in groove 25 to fix the stopper rod 1 on the quick-clamping sleeve 18, so that the stopper rod is not prone to accidental falling off.

[0039] Optionally, the limiting mechanism includes a positioning sleeve 13 and a limiting sleeve 14 which are sleeved on the quick-clamp sleeve 18. The positioning sleeve 13 is arranged between the limiting sleeve 14 and the control sleeve 17. The return blocks 7 are evenly arranged on the limiting sleeve 14. The fixed blocks 9 are evenly arranged on the quick-clamp sleeve 18. The limiting sleeve 14 is also provided with a plurality of limiting holes 6 which are engaged with the positioning rod 11. The positioning sleeve 13 is fixedly connected to the positioning rod 11.

[0040] Specifically, the positioning sleeve 13 and the limiting sleeve 14 are both sleeved on the outer circumference of the quick-release sleeve 18, and the positioning sleeve 13 and the limiting sleeve 14 are arranged between the mounting plate 22 and the fixing plate 10 of the quick-release sleeve 18. When the limiting sleeve 14 needs to be rotated to remove the stopper rod 1 from the quick-release sleeve 18, the limiting sleeve 14 and the positioning sleeve 13 will not fall off and be lost from the quick-release sleeve 18.

[0041] Optionally, the limiting mechanism also includes a fixed plate 10, which is arranged on the side of the limiting sleeve 14 facing the control sleeve 17. The fixed plate 10 is connected to the quick-release sleeve 18. The middle part of the positioning rod 11 protrudes toward the periphery to form a supporting surface. A push spring 16 is arranged between the supporting surface and the fixed plate 10. The push spring 16 is sleeved on the outer periphery of the positioning rod 11, and the positioning rod 11 passes through both sides of the fixed plate 10.

[0042] Specifically, a push spring 16 is disposed between the fixed plate 10 and the supporting surface of the positioning rod 11. When the push spring 16 is naturally released, the positioning rod 11 is always inserted into the positioning slot 12 of the control sleeve 17. This prevents the control sleeve 17 from rotating, and the guide plate 21 on the outer periphery of the control sleeve 17 from contacting the guide frame 21, making it impossible to push the guide frame 21 outward from the quick-release sleeve 18. This ensures that the stopper rod cannot be detached from the quick-release sleeve. When the control sleeve 17 needs to be rotated, the positioning sleeve 13 needs to be pushed toward the mounting plate 22. This will remove the positioning rod 11 from the positioning slot 12, allowing the control sleeve 17 to rotate relative to the quick-release sleeve 18.

[0043] Optionally, a plurality of positioning grooves 12 are provided on one end of the control sleeve 17 facing the fixing plate 10 , and the positioning grooves 12 are plugged into and matched with one end of the positioning rod 11 .

[0044] Optionally, a plurality of anti-slip strips 15 are provided on the periphery of the limit sleeve 14 to facilitate the rotation of the limit sleeve 14, so that the return block 7 on the limit sleeve 14 squeezes the spring 8, so that the upper limit hole 6 on the limit sleeve 14 can be aligned with the positioning rod 11, and then the position of the positioning rod 11 can be adjusted.

[0045] Optionally, the control sleeve 17 includes two parallel ring bodies with an annular gap between the two ring bodies. The guide frame 20 has a cross structure. The four ends of the guide frame 20 pass through the control sleeve 17 through the plug-in rods 24 and are plugged into the plug-in slots 25.

[0046] Specifically, the guide frame 20 is a cross structure, and is installed on the control sleeve 17 along the length direction of the stopper rod 1. The position of the control sleeve 17 on the quick-clamp sleeve 18 is limited by four plug-in rods 24 on the guide frame 20. The vertical part of the guide frame 20 can be used in conjunction with the guide plate 21 of the control sleeve 17. When the control sleeve 17 is rotated, the guide frame 20 can be pushed outward by the protruding surface of the guide plate 21.

[0047] Optionally, a plurality of mounting plates 22 are circumferentially provided at one end of the quick-release sleeve 18 , and a mounting hole 23 is provided on each mounting plate 22 .

[0048] Specifically, the quick-release sleeve 18 can be fixed through the mounting hole 23 , and then the stopper rod 1 can be fixed to the quick-release sleeve 18 through the guide frame 20 , thereby ensuring the connection stability of the stopper rod 1 .

[0049] Optionally, a hollow cavity is provided in the stopper rod 1, an air inlet 4 connected to the hollow cavity is provided at one end of the stopper rod 1, a stopper head 2 is provided at the other end of the stopper rod 1, a plurality of guide holes 3 are provided on the side wall of the stopper rod 1, and a quick-lock rod 5 is provided on the stopper rod 1 to cooperate with the control sleeve 17.

[0050] Optionally, the guide hole 3 is configured as a conical structure.

[0051] Specifically, the conical structure of the guide hole 3 can effectively prevent solid impurities from entering the inside of the stopper rod 1 through the guide hole 3 , thereby effectively preventing the guide hole 3 from being blocked.

[0052] Example

[0053] The utility model provides a stopper rod for continuous casting. When the stopper rod needs to be replaced as a whole, it is first lifted by an external lifting device. After it is cooled, the limit sleeve 14 is rotated. The setting of the anti-slip strip 15 can increase the friction force of the outer surface of the limit sleeve 14. Then the limit sleeve 14 drives the return block 7 set on one side to rotate. Then the return block 7 cooperates with the fixed block 9 fixed on the outer side of the quick-clamping sleeve 18 to squeeze the spring 8. When the spring 8 is squeezed to the limit, the position of the limit hole 6 will just correspond to the position of the positioning rod 11, and then the positioning sleeve is pushed upward. 13, so that the positioning sleeve 13 drives one end of the positioning rod 11 to disengage from the positioning groove 12 opened on one side of the control sleeve 17, and the positioning rod 11 will cooperate with the fixing plate 10 to squeeze the push spring 16 set on the outside, and at the same time the top of the positioning rod 11 will pass through the limiting hole 6, and then rotate the control sleeve 17 in the corresponding direction, and the control sleeve 17 will drive the guide plate 21 set on the outside to rotate. Due to the variable diameter structure design of the guide plate 21, when the guide plate 21 rotates with the control sleeve 17, it will drive the guide frame 20 to move outward, so that the guide frame 20 drives the guide plate set on one side. The plug rod 24 is disengaged from the plug slot 25, and at the same time, the guide frame 20 drives the tension spring 26 set on one side to stretch. When the control sleeve 17 cannot rotate, the guide frame 20 just drives the plug rod 24 connected on one side to completely disengage from the plug slot 25, and then the stopper rod is pulled downward as a whole to remove the stopper rod as a whole. Then, the quick-clamp rod 5 set at the top of the new stopper rod 1 is inserted into the quick-clamp sleeve 18 connected to the output end of the lifting equipment according to the above process, and then the control sleeve 17 is rotated in the opposite direction to reset the guide plate 21, and then the tension spring 26 drives the guide frame 20 The locking mechanism 14 is locked and the locking mechanism 12 is unlocked, and the locking mechanism 12 is unlocked, and the locking mechanism 12 is unlocked. The locking mechanism 14 is unlocked, and the locking mechanism 12 is unlocked. The locking mechanism 14 is unlocked, and the locking mechanism 12 is unlocked. The locking mechanism 12 is unlocked, and the locking mechanism 12 is unlocked.

[0054] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A stopper rod for continuous casting, characterized in that: include: A stopper rod, one end of which is inserted into the interior of the quick-release sleeve, the stopper rod is provided with a plug-in slot, and the quick-release sleeve is provided with a through slot corresponding to the plug-in slot; A control sleeve is sleeved on the outer periphery of the quick-release sleeve, and the control sleeve is connected to the quick-release sleeve through a guide frame. The guide frame sequentially passes through the through slot and the plug-in slot. A tension spring is provided between the guide frame and the quick-release sleeve. A guide plate is provided on the outer peripheral surface of the control sleeve. When the guide frame needs to be pulled out of the through slot and the plug-in slot, the control sleeve is rotated to push the guide frame outward through the guide plate. A limiting mechanism is sleeved on the outer circumference of the quick-clamp sleeve, and the limiting mechanism includes a plurality of return blocks and a plurality of fixed blocks arranged at intervals along the circumferential direction, a spring is arranged between the return block and the fixed block, and the limiting mechanism also includes a slidably arranged positioning rod, the setting direction of the positioning rod is parallel to the axial direction of the control sleeve, one end of the positioning rod is plugged into and matched with the end face of the control sleeve, when the control sleeve needs to be fixed, the spring is in a non-extrusion state, and the positioning rod is plugged into and matched with the control sleeve, when the control sleeve needs to be rotated, the two ends of the spring are squeezed by the return block and the fixed block, and the positioning rod is detached from the control sleeve.

2. The stopper rod for continuous casting according to claim 1, characterized in that The limiting mechanism includes a positioning sleeve and a limiting sleeve mounted on the quick-release sleeve. The positioning sleeve is arranged between the limiting sleeve and the control sleeve. The return blocks are evenly arranged on the limiting sleeve. The fixed blocks are evenly arranged on the quick-release sleeve. The limiting sleeve is also provided with a plurality of limiting holes that are engaged with the positioning rod. The positioning sleeve is fixedly connected to the positioning rod.

3. The stopper rod for continuous casting according to claim 2, characterized in that: The limiting mechanism also includes a fixing plate, which is arranged on the side of the limiting sleeve facing the control sleeve, and the fixing plate is connected to the quick-clamp sleeve. The middle part of the positioning rod protrudes toward the periphery to form a supporting surface, and a push spring is arranged between the supporting surface and the fixing plate. The push spring is sleeved on the outer periphery of the positioning rod, and the positioning rod passes through both sides of the fixing plate.

4. The stopper rod for continuous casting according to claim 3, characterized in that: A plurality of positioning grooves are provided on one end of the control sleeve facing the fixing plate, and the positioning grooves are plug-fitted with one end of the positioning rod.

5. The stopper rod for continuous casting according to claim 2, characterized in that: A plurality of anti-slip strips are arranged on the outer periphery of the limiting sleeve.

6. The stopper rod for continuous casting according to claim 1, characterized in that The control sleeve includes two parallel ring bodies, with an annular gap provided between the two ring bodies. The guide frame is a cross structure, and the four ends of the guide frame pass through the control sleeve through plug rods and are plugged into the plug slots.

7. The stopper rod for continuous casting according to claim 1, characterized in that One end of the quick-release sleeve is provided with a plurality of mounting plates along the circumferential direction, and each mounting plate is provided with a mounting hole.

8. The stopper rod for continuous casting according to claim 1, characterized in that A hollow cavity is provided in the stopper rod, an air inlet connected to the hollow cavity is provided at one end of the stopper rod, a stopper head is provided at the other end of the stopper rod, a plurality of guide holes are provided on the side wall of the stopper rod, and a quick-lock rod cooperating with the control sleeve is provided on the stopper rod.

9. The stopper rod for continuous casting according to claim 8, characterized in that: The guide hole is configured as a conical structure.

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