Blast furnace taphole drill rod

Abstract

The utility model discloses a kind of blast furnace opening machine drill rod, including drill rod body, the both sides of drill rod body are equipped with connecting thread, the side of connecting thread is slidably installed with adjusting ring, the surface of adjusting ring is rotatably installed with multiple number of protective fan blade, the side of protective fan blade is connected with positioning plate, the surface both sides of adjusting ring are equipped with clamping positioning mechanism. The utility model has the following effects: by adjusting ring on drill rod body sliding adjustment, according to different depth of tapping hole when drilling, the position of protective fan blade on drill rod body is adjusted, and by clamping positioning mechanism, adjusting ring is fixed on the surface of drill rod body, when opening machine drives drill rod body and protective fan blade high-speed rotation, the fan blade of high-speed rotation forms a high-efficiency dynamic protective barrier on one side of drill rod, can effectively block the drill chips of splashing in drilling, improve the safety of tapping hole drilling processing.

Description

Technical Field

[0001] This utility model relates to the field of drill rod technology for blast furnace tapping machines, and more specifically, to a drill rod for a blast furnace tapping machine. Background Technology

[0002] The blast furnace tapping machine is a key specialized piece of equipment in modern blast furnace ironmaking operations. It is primarily used to drill through the taphole, removing the clay that blocks the taphole and allowing molten iron to flow smoothly. After a single tapping operation, the taphole is typically sealed with high-temperature resistant clay. Before the next tapping, the tapping machine is used to break through the solidified clay and any remaining slag, creating a clear tapping channel. This equipment usually uses a hydraulic or pneumatic system to drive the drill rod and drill bit to rotate at high speed, using powerful torque and impact force to penetrate the hard, high-temperature blockage.

[0003] To improve drilling efficiency and prevent drill bit overheating, existing blast furnace opening machines typically have internal conveying channels in the drill rod for continuously injecting compressed air or other cooling gases into the drill bit tip during drilling. This gas is transported through the internal channels to the drill bit tip and then ejected, serving two purposes: cooling the drill bit and blowing away the large amount of high-temperature drill cuttings generated during drilling, achieving both chip removal and cooling. While this forced purging method effectively improves chip removal efficiency, it also introduces certain safety hazards. The high-temperature drill cuttings continuously splash outwards, severely polluting surrounding equipment and the working environment, increasing equipment maintenance difficulty and costs, and posing a significant threat to the personal safety of on-site operators, easily causing burns or other accidents. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a drill rod for a blast furnace opening machine to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A drill rod for a blast furnace opening machine includes a drill rod body with connecting threads on both sides. An adjusting ring is slidably installed on one side of the connecting threads. A plurality of protective fan blades are rotatably installed on the surface of the adjusting ring. A positioning plate is connected to one side of the protective fan blades. A clamping and positioning mechanism is provided on both sides of the surface of the adjusting ring.

[0007] Furthermore, in order to fix the adjusting ring to the surface of the drill pipe body, the clamping and positioning mechanism includes shrinkage grooves on both ends of the adjusting ring, a pressure-bearing inclined block is slidably installed inside the shrinkage groove, a squeezing column is connected to the bottom of the pressure-bearing inclined block, a positioning hole is opened on one side of the shrinkage groove, and the squeezing column cooperates with the positioning hole.

[0008] Furthermore, in order to achieve the squeezing and clamping of the extrusion column onto the surface of the drill pipe body, the surface of the adjusting ring is provided with transmission threads on both sides, the surface of the transmission threads is threaded with a turning ring, one side of the turning ring is connected to an extrusion ring, and one end of the extrusion ring is engaged with the inclined surface of the pressure block.

[0009] Furthermore, in order to limit the rotation of the unfolded protective fan blades, a limit screw is installed on the surface of the positioning plate, and a threaded hole is opened on the surface of the adjusting ring, with the limit screw cooperating with the threaded hole.

[0010] Furthermore, in order to increase the frictional force when the extrusion column clamps and contacts the surface of the drill pipe body, one end of the extrusion column is provided with anti-slip texture.

[0011] Furthermore, to facilitate the rotation and adjustment of the rotating ring, the rotating ring is a hexagonal prism-shaped carbide ring.

[0012] Furthermore, in order to inject compressed gas into the drill pipe body during drilling to facilitate the blowing out of drill cuttings, a conveying channel is opened inside the drill pipe body.

[0013] The beneficial effects of this utility model are as follows: By adjusting the sliding ring on the drill rod body, the position of the protective fan blade on the drill rod body can be adjusted according to the different depths of the iron outlet during drilling. The adjusting ring is fixed to the surface of the drill rod body by the clamping and positioning mechanism. When the opening machine drives the drill rod body and the protective fan blade to rotate at high speed, it can provide continuous and efficient forced air cooling for the drill bit and the iron outlet area, effectively reducing the working temperature of the drill bit. In addition, the high-speed rotating fan blade forms an efficient dynamic protective barrier on one side of the drill rod, which can effectively knock down, block or change the flight direction of the drill cuttings splashed in the borehole, and limit them to the area near the iron outlet, thereby avoiding direct injury to the operator and effectively improving the safety of the iron outlet drilling process. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the surface structure of a drill rod for a blast furnace opening machine according to an embodiment of the present utility model;

[0016] Figure 2 This is a side view of a blast furnace opening machine drill rod according to an embodiment of the present utility model;

[0017] Figure 3This is a detailed view of the surface structure of the adjusting ring in the drill rod of a blast furnace opening machine according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the surface structure of the transmission thread in the drill rod of a blast furnace opening machine according to an embodiment of the present utility model;

[0019] Figure 5 This is a detailed view of the surface section of the rotating ring in the drill rod of a blast furnace opening machine according to an embodiment of the present invention;

[0020] Figure 6 This is an internal cross-sectional view of the adjusting ring in the drill rod of a blast furnace opening machine according to an embodiment of the present invention;

[0021] Figure 7 yes Figure 6 Enlarged diagram of point A in the middle.

[0022] In the picture:

[0023] 1. Drill rod body; 2. Connecting thread; 3. Adjusting ring; 4. Protective fan blade; 5. Positioning plate; 6. Clamping and positioning mechanism; 601. Shrinkage groove; 602. Pressure-bearing inclined block; 603. Extrusion column; 604. Positioning hole; 605. Transmission thread; 606. Tightening ring; 607. Extrusion ring; 7. Limiting screw; 8. Anti-slip texture; 9. Conveying channel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] According to an embodiment of the present invention, a drill rod for a blast furnace opening machine is provided.

[0026] like Figures 1-4As shown, a blast furnace opening machine drill rod according to an embodiment of this utility model includes a drill rod body 1 made of high-strength alloy structural steel. Connecting threads 2 are provided on both sides of the drill rod body 1 for connecting the drill bit and the opening machine, respectively. An adjusting ring 3 is slidably installed on one side of the connecting threads 2. The adjusting ring 3 can slide and adjust on the surface of the drill rod body 1 to change its position on the surface of the drill rod body 1. A plurality of protective fan blades 4 are rotatably installed on the surface of the adjusting ring 3. A positioning plate 5 is connected to one side of each protective fan blade 4 to prevent the fan blade 4 from rotating to a position perpendicular to the adjusting ring 3. It is limited; the adjusting ring 3 is provided with clamping and positioning mechanisms 6 on both sides of its surface, which are used to fix the adjusting ring 3 to the surface of the drill rod body 1 after it slides, so that the adjusting ring 3 can rotate together with the drill rod body 1 when drilling. After the adjusting ring 3 rotates, the protective fan blades 4 on its surface can also rotate at high speed, which provides continuous and efficient forced air cooling for the drill bit and the iron outlet area. The high-speed rotating fan blades form an efficient dynamic protective barrier on one side of the drill rod, which can effectively knock down, block or change the flight direction of the drill cuttings splashed in the borehole, and limit them to the area near the iron outlet.

[0027] like Figures 1-7As shown, the clamping and positioning mechanism 6 includes six pairs of contraction grooves 601 on the surfaces of both ends of the adjusting ring 3, all distributed around the two ends of the adjusting ring 3. Each contraction groove 601 has a slidingly mounted pressure-bearing inclined block 602. A pressing column 603 is connected to the bottom of the pressure-bearing inclined block 602. A positioning hole 604 is provided on one side of the contraction groove 601, and the pressing column 603 cooperates with the positioning hole 604. The adjusting ring 3 has transmission threads 605 on both sides of its surface. Each transmission thread 605 is threadedly connected to a turning ring 606. A pressing ring 607 is connected to one side of the turning ring 606. One end of the pressing ring 607 cooperates with the inclined surface of the pressure-bearing inclined block 602. The turning ring 606 is a hexagonal prism-shaped hard alloy ring. By rotating the turning ring 606, it drives the pressing ring 607 to move towards the pressure-bearing inclined block 602 at one end of the adjusting ring 3, continuously pressing the pressure-bearing inclined block 602, thereby causing the pressure-bearing inclined block 602 to... The 2nd part retracts into the shrinkage groove 601, and drives the extrusion column 603 to move towards the positioning hole 604, extruding the surface of the drill rod body 1 inside the adjusting ring 3. The friction generated by the extrusion column 603 extruding the drill rod body 1 at one end can fix the adjusting ring 3 on the surface of the drill rod body 1, preventing it from continuing to slide. The surface of the positioning plate 5 is equipped with a limit screw 7, and the surface of the adjusting ring 3 has a threaded hole. The limit screw 7 cooperates with the threaded hole. After the positioning plate 5 is rotated to one side of the surface of the drill rod body 1, the limit screw 7 is threadedly connected to the limit hole to fix and limit the rotation of the positioning plate 5 and the protective fan blade 4. One end of the extrusion column 603 is provided with anti-slip texture 8 to increase the friction when one end of the extrusion column 603 contacts the surface of the drill rod body 1. The drill rod body 1 has a conveying channel 9 inside, which is used to inject compressed gas into the drill rod body 1 during drilling, so as to facilitate the blowing out of the drill cuttings in the borehole.

[0028] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0029] In actual use, first, according to the depth of the tap hole and the specific requirements of the drilling operation, manually slide the adjusting ring 3 to a suitable position on the drill rod body 1 to ensure that it is located at a certain distance behind the drill bit. After adjustment, rotate the hexagonal prism-shaped turning ring 606 on both sides of the adjusting ring 3 to drive the internal squeezing ring 607 to move along the transmission thread 605 to the end of the adjusting ring 3. The inner end face of the squeezing ring 607 cooperates with the inclined surface of the pressure-bearing inclined block 602, pushing the pressure-bearing inclined block 602 to shrink inward along the shrinkage groove 601, thereby driving the squeezing column 603 connected at its bottom to move towards the center through the positioning hole 604, so that one end of the squeezing column 603 is tightly pressed against the surface of the drill rod body 1. The end of the extrusion column 603 is provided with anti-slip grooves 8, which can significantly increase the friction between it and the drill rod body 1, thereby firmly clamping and fixing the adjusting ring 3 to the drill rod body 1 and preventing axial slippage or loosening during high-speed rotation. During installation, the protective fan blade 4 is rotated to a working state perpendicular to the adjusting ring 3. Then, the positioning plate 5 is rotated synchronously with the fan blade to a position that fits against the outer wall of the drill rod body 1. Then, the limiting screw 7 is screwed into the threaded hole on the surface of the adjusting ring 3 to achieve axial limiting of the positioning plate 5 and the protective fan blade 4, ensuring that they remain in a stable unfolded state during operation. When drilling begins, the adjusting ring 3 is fixed to the drill rod body 1 by the clamping and positioning mechanism 6. It rotates at high speed with the drill rod, which in turn drives the multiple protective fan blades 4 installed on its surface to rotate at high speed synchronously. The high-speed rotating protective fan blades 4 can provide continuous and efficient forced air cooling for the drill bit and the tap hole area. On the other hand, they form an efficient dynamic protective barrier on one side of the drill rod, which can effectively knock down, block or change the flight direction of the drill cuttings splashed in the borehole, and limit them to the area near the tap hole, thereby significantly reducing the pollution of surrounding equipment by drill cuttings and the safety threat to operators.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drill rod for a blast furnace taphole machine, characterized in that, The drill rod body (1) is provided with connecting threads (2) on both sides. An adjusting ring (3) is slidably installed on one side of the connecting threads (2). Multiple protective fan blades (4) are rotatably installed on the surface of the adjusting ring (3). A positioning plate (5) is connected to one side of the protective fan blades (4). A clamping positioning mechanism (6) is provided on both sides of the surface of the adjusting ring (3).

2. The drill rod for a blast furnace tapping machine according to claim 1, characterized in that, The clamping and positioning mechanism (6) includes a shrinkage groove (601) on both ends of the adjusting ring (3), a pressure-bearing inclined block (602) is slidably installed inside the shrinkage groove (601), a pressing column (603) is connected to the bottom of the pressure-bearing inclined block (602), a positioning hole (604) is opened on one side of the shrinkage groove (601), and the pressing column (603) cooperates with the positioning hole (604).

3. A drill rod for a blast furnace taphole machine according to claim 2, characterized in that, The adjustment ring (3) has transmission threads (605) on both sides of its surface. The transmission threads (605) are threadedly connected to a turning ring (606). A pressing ring (607) is connected to one side of the turning ring (606). One end of the pressing ring (607) is engaged with the inclined surface of the pressure block (602).

4. A drill rod for a blast furnace taphole machine according to claim 1, characterized in that, A limiting screw (7) is installed on the surface of the positioning plate (5), and a threaded hole is opened on the surface of the adjusting ring (3), and the limiting screw (7) is matched with the threaded hole.

5. A drill rod for a blast furnace taphole machine according to claim 1, characterized in that, The surface of one end of the extrusion column (603) is provided with anti-slip texture (8).

6. A drill rod for a blast furnace taphole machine according to claim 3, characterized in that, The rotating ring (606) is a hexagonal prism-shaped cemented carbide ring.

7. A drill rod for a blast furnace taphole machine according to claim 1, characterized in that, The drill pipe body (1) has a conveying channel (9) inside.

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