Online dredging device suitable for tundish stopper blowing hole

Abstract

The utility model relates to the technical field of continuous casting, in particular to an online dredging device suitable for tundish stopper blowing holes. Comprising a rack, a driving device, a rotating device and a limiting device, the machine frame is a stand column fixed to a tundish cover. The rotating device comprises a hydraulic motor fixed to the top end of the stand column, the upper side of the hydraulic motor is connected with a speed reducer, and a beam is fixed to an output shaft of the speed reducer through a beam connecting sleeve. The driving device comprises a lifting hydraulic cylinder fixed at the tail end of the cross beam, a push rod of the lifting hydraulic cylinder downwards penetrates through the cross beam, a slag poking rod is fixed at the tail end of the push rod, and a slag poking needle is fixed at the lower end of the slag poking rod; the lifting hydraulic cylinder is connected with the hydraulic valve stand. An annular upper limiting piece is fixed on the push rod, a plurality of limiting rods are welded on the lower side of the cross beam and beside the push rod, an annular lower limiting piece is fixed at the lower end of each limiting rod, a central hole is formed in each lower limiting piece, and the push rod penetrates through the central hole, so that the limiting device is formed. The device has the advantages of online dredging and reduction of the labor intensity of workers.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting technology, and in particular to an online unblocking device for the air blowing holes of the tundish stopper rod. Background Technology

[0002] In continuous casting, tundish pouring is the final step before casting. During tundish pouring, the flow of steel into the nozzle is controlled by a stopper rod. These stopper rods, often hollow in structure, use argon gas to clean the nozzle and prevent turbulent steel flow. However, inclusions can easily clog the blowholes at the rod head. Currently, the common method for clearing these blockages is manual burning from below the nozzle. This only cleans the surface deposits on the rod head and fails to remove inclusions inside the blowhole, affecting the effectiveness of the gas-washing process and ultimately causing the tundish to be prematurely removed from the production line.

[0003] Therefore, there is a need for an online unblocking device for the stopper rod air blowing holes during the tundish casting process to replace manual burning operations, thereby improving the success rate of unblocking the stopper rod air blowing holes, ensuring the effect of air washing nozzles, and reducing the impact of molten steel turbulence on the tundish life. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an online unblocking device suitable for the air blowing hole of the tundish stopper rod. It can not only quickly remove the debris in the air blowing hole of the rod head, but also reduce the labor intensity of the workers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an online unblocking device for the air blowing hole of a stopper rod in a tundish, comprising a frame, a drive device, a rotating device, and a limiting device; the frame is a column fixed on the tundish cover; the rotating device includes a hydraulic motor fixed at the top of the column, a reducer connected to the upper side of the hydraulic motor, the output shaft of the reducer pointing upwards, and a crossbeam fixed on the output shaft by a crossbeam connecting sleeve; the drive device includes a lifting hydraulic cylinder fixed at the end of the crossbeam, the lifting hydraulic cylinder push rod passing downwards through the crossbeam, a slag-plucking rod fixed at the end of the push rod, and a slag-plucking needle fixed at the lower end of the slag-plucking rod; the limiting device is located on the lower side of the end of the crossbeam.

[0006] Preferably, the lifting hydraulic cylinder is connected to a hydraulic valve platform, and the operation of the lifting hydraulic cylinder is controlled by the hydraulic valve platform.

[0007] Preferably, an annular upper limit plate is fixed on the push rod, and several limit rods are welded to the lower side of the crossbeam and next to the push rod. An annular lower limit plate is fixed to the lower end of the limit rod. The lower limit plate has a central hole, through which the push rod passes. When the upper limit plate on the push rod moves downward and encounters the lower limit plate, it stops moving. When the upper limit plate moves upward and encounters the lifting hydraulic cylinder body, it stops moving upward. The above structure constitutes the limiting device.

[0008] The beneficial effects of this invention are: it can quickly remove debris from the air blowing holes of the rod head, reducing the labor intensity of workers. Attached Figure Description

[0009] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Appendix Figure 2 This is a schematic diagram of the stopper rod structure of this utility model.

[0011] Appendix Figure 1 , 2 In the middle, there are: 1. Intermediate tundish; 2. Cover; 3. Column; 4. Hydraulic motor; 5. Reducer; 6. Crossbeam connecting sleeve; 7. Crossbeam; 8. Lifting hydraulic cylinder; 9. Upper limit plate; 10. Limit rod; 11. Push rod; 12. Lower limit plate; 13. Slag-pumping rod; 14. Slag-pumping needle; 15. Air pipe connector; 16. Rod core; 17. Stopper rod; 18. Hydraulic valve platform; 19. Air blowing hole. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0013] Appendix Figure 1 , 2 As shown, an online unblocking device for the air blowing hole of a tundish stopper rod includes a frame, a drive unit, a rotating unit, and a limiting device. The frame is a column 3 fixed on the tundish cover 2. The rotating unit includes a hydraulic motor 4 fixed at the top of the column 3, a reducer 5 connected to the upper side of the hydraulic motor 4, the output shaft of the reducer 5 is upward, and a crossbeam 7 is fixed on the output shaft by a crossbeam connecting sleeve 6. The drive unit includes a lifting hydraulic cylinder 8 fixed at the end of the crossbeam 7, a push rod 11 of the lifting hydraulic cylinder 8 passing downward through the crossbeam 7, a slag-pumping rod 13 fixed at the end of the push rod 11, and a slag-pumping needle 14 fixed at the lower end of the slag-pumping rod 13. The limiting device is located on the lower side of the end of the crossbeam 7.

[0014] The lifting hydraulic cylinder 8 is connected to the hydraulic valve platform 18, and the operation of the lifting hydraulic cylinder 8 is controlled by the hydraulic valve platform 18.

[0015] An annular upper limit plate 9 is fixed on the push rod 11. Several limit rods 10 are welded to the lower side of the crossbeam 7 and next to the push rod 11. An annular lower limit plate 12 is fixed to the lower end of the limit rod 10. The lower limit plate 12 has a central hole. The push rod 11 passes through the central hole. When the upper limit plate 9 on the push rod 11 moves downward and encounters the lower limit plate 12, it stops moving downward. When the upper limit plate 9 moves upward and encounters the cylinder body of the lifting hydraulic cylinder 8, it stops moving upward. The above structure constitutes the limiting device.

[0016] In actual use, the online unblocking device is in the standby position, the cover 2 is placed on the upper side of the tundish 1, the air pipe connector 15 is connected to the rod core 16, the lower end of the rod core 16 is connected to the stopper rod 17, the stopper rod 17 is provided with an air blowing hole 19 in the middle, and the stopper rod 17 is controlled by other equipment to pressurize the molten steel in the tundish 1 with air.

[0017] When the air inlet 19 is blocked by impurities, disconnect the air pipe connector 15, start the hydraulic motor 4, and drive the output shaft of the reducer 5 to rotate, causing the slag-clearing needle 14 to rotate above the stopper rod 17. The hydraulic valve platform 18 activates the lifting hydraulic cylinder 8, and the push rod 11 extends, causing the slag-clearing rod 13 and the slag-clearing needle 14 to move downwards. The slag-clearing needle 14 passes through the lower end of the air inlet 19 to clear the blockage. Then, reconnect the air pipe connector 15 and test the airflow. If the airflow is not smooth, repeat the above operation until the air inlet 19 is completely cleared. Reverse the operation of the hydraulic motor 4 and the lifting hydraulic cylinder 8 to return the online unblocking device to the standby position. The limit device controls the vertical movement limit of the slag-clearing needle 14.

[0018] The beneficial effects of this invention are: it can quickly remove debris from the air blowing holes of the rod head, reducing the labor intensity of workers.

[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for online clearing of a tundish stopper blowhole, characterized in that: It includes frame, driving device, rotating device, limiting device; the frame is a column fixed on the tundish cover; the rotating device includes a hydraulic motor fixed on the top of the column, a reducer connected on the upper side of the hydraulic motor, an output shaft of the reducer upward, a crossbeam fixed on the output shaft with a crossbeam connecting sleeve; the driving device includes a lifting hydraulic cylinder fixed on the end of the crossbeam, a push rod of the lifting hydraulic cylinder downward through the crossbeam, a slag poking rod fixed on the end of the push rod, and a slag poking needle fixed on the lower end of the slag poking rod; the limiting device is arranged on the lower side of the end of the crossbeam.

2. The online unblocking device for tundish stopper nozzle according to claim 1, characterized in that: The lifting hydraulic cylinder is connected with a hydraulic valve table, and the operation of the lifting hydraulic cylinder is controlled by the hydraulic valve table.

3. The online clogging device for tundish stopper blowhole according to claim 1, characterized in that: An annular upper limiting piece is fixed on the push rod, a plurality of limiting rods are welded on the lower side of the crossbeam beside the push rod, an annular lower limiting piece is fixed on the lower end of the limiting rods, the lower limiting piece is provided with a center hole, the push rod passes through the center hole, the upper limiting piece on the push rod stops running when it meets the lower limiting piece during downward running, and the upper limiting piece stops upward running when it meets the cylinder body of the lifting hydraulic cylinder during upward running, and the above structure constitutes the limiting device.

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