A blast furnace taphole machine purging and cooling guide device

Abstract

This invention provides a purging and cooling guide device for a blast furnace taphole machine, comprising a device body in the form of a tubular structure with an internal through hole; multiple through holes axially arranged on the tube wall of the device body, with both ends welded shut after machining; multiple sealing grooves at the front end of the device body, wherein an annular water-absorbing guide groove is provided on the partition wall between two sealing grooves, and multiple water-absorbing guide holes are radially arranged on the water-absorbing guide groove, communicating with the multiple through holes; multiple Y-shaped sealing rings are provided on the device body, fitting onto the multiple sealing grooves; a boss is provided at the rear end of the device body, with multiple water-discharge guide holes radially arranged on the boss, communicating with the multiple through holes. In this invention, when the Y-shaped sealing rings wear out, cooling water enters through the water-absorbing guide holes, flows through the through holes, and then exits through the water-discharge guide holes, allowing for timely detection and maintenance, preventing cooling water from entering the taphole machine and causing gearbox burnout.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace ironmaking technology, and in particular to a blast furnace taphole machine purging and cooling guide device. Background Technology

[0002] The taphole opener is a crucial piece of machinery for opening the taphole during blast furnace tapping. To ensure timely and timely opening, the following requirements must be met: the drill rod rotation speed should typically be controlled between 200-320 rpm, and the drill rod impact frequency should be 40-50 Hz. The drill rod is designed to be hollow and is movably connected to a flow guide device via a connecting sleeve. During the taphole opening process, compressed air mixed with water enters the drill rod through the flow guide device to blow away chips in the borehole and cool the drill bit.

[0003] In the existing technology, due to the high-frequency impact and high-speed rotation of the drill rod of the iron-opening machine, the sealing ring of the flow guiding device wears and fails, causing leakage. A portion of the compressed air and water flows back through the sealing ring and directly enters the inside of the iron-opening machine. Because it is not easy to detect in time, the cooling water soaks into the space of the retaining ring, penetrates the gearbox, and comes into direct contact with the impact piston, causing the lubricating oil to emulsify. At this time, the impact piston is moving at high speed, eventually burning out the gearbox.

[0004] Furthermore, due to the reduced cooling water supply to the drill rod, the drill rod gradually burns out starting from the drill bit, resulting in a larger outer diameter and a smaller inner diameter (inside the furnace) of the taphole channel. More seriously, the taphole channel can become a conical shape, causing molten iron to splash. This splashing leads to uneven slag and iron discharge from the blast furnace, limiting intensified smelting. It also shortens the slag and iron tapping time, increasing the number of tapping operations and labor intensity. The resulting smoke and high-temperature slag and iron pose a threat to the working environment. Additionally, splashing causes problems such as trapped air inside the furnace and poor probe operation, affecting the stable and smooth operation of the blast furnace. Utility Model Content

[0005] To address the aforementioned technical problems, a blast furnace taphole cleaning and cooling guide device is provided. This invention primarily addresses the issue of cooling water entering through the suction guide hole after the Y-shaped sealing ring wears and fails, then flowing out through the through hole and finally out through the outlet guide hole. This allows the operator to promptly detect and repair the problem, preventing cooling water from entering the gearbox and causing gearbox burnout. The technical means employed in this invention are as follows: A blast furnace taphole machine purging and cooling guide device includes: a device body, the device body having a tubular structure and an internal through hole; multiple through holes are arranged axially around the tube wall of the device body, and the two ends of the through holes are welded shut after machining. The front end of the device body is provided with multiple sealing grooves, and an annular water absorption guide groove is provided on the partition wall between two sealing grooves. Multiple water absorption guide holes are provided radially around the water absorption guide groove, and the multiple water absorption guide holes are respectively connected to multiple through holes. The device body is provided with a plurality of Y-shaped sealing rings, which are respectively fitted onto a plurality of sealing grooves; The rear end of the device body is provided with a boss, and multiple water outlet guide holes are arranged radially around the boss, and the multiple water outlet guide holes are respectively connected to multiple through holes.

[0006] Furthermore, the sealing groove is provided in three parts, namely the first sealing groove, the second sealing groove and the third sealing groove from front to back, and the annular water absorption guide groove is provided on the partition wall between the second sealing groove and the third sealing groove.

[0007] Furthermore, the Y-shaped sealing rings are provided in three parts, each with a lip. The lips of the three Y-shaped sealing rings are respectively fitted onto the three sealing grooves.

[0008] Furthermore, the protrusion is provided with an annular water outlet guide groove, and the plurality of water outlet guide holes are arranged on the water outlet guide groove.

[0009] Furthermore, a circular flange is provided on the boss, and the flange is provided with multiple fixing bolt holes.

[0010] Furthermore, the flange has a threaded connection hole in the middle that communicates with the through hole.

[0011] Compared with the prior art, the present invention has the following advantages: 1. The blast furnace taphole machine purging and cooling guide device provided by this utility model features a Y-shaped sealing ring with a lip design that allows the lip to open tightly against the sealing surface under pressure, forming a reliable sealing barrier and effectively preventing media leakage. Furthermore, the relatively small contact area between the Y-shaped sealing ring and the sealing surface reduces friction, resulting in smoother movement.

[0012] 2. The blast furnace taphole cleaning and cooling guide device provided by this utility model allows cooling water to enter through a small guide hole after the Y-shaped sealing ring wears and fails, and then flow out through a through hole and a large guide hole. This allows the operator to detect and repair the problem in time, preventing cooling water from entering the gearbox and causing the gearbox to burn out.

[0013] 3. The blast furnace taphole machine purging and cooling guide device provided by this utility model can deliver compressed air and cooling water into the drill rod, which can effectively reduce the temperature of the drill bit and drill rod, reduce friction, and prevent the drill bit from overheating and being damaged. At the same time, the cooling water also helps to remove the chips generated during the drilling process and keep the drill bit sharp.

[0014] 4. The blast furnace taphole machine purging and cooling guide device provided by this utility model significantly reduces the consumption of drill rods from 2.6 per heat to 1.45 per heat, and the consumption of drill bits is also reduced from 3.2 per heat to 1.1 per heat.

[0015] 5. The blast furnace taphole cleaning and cooling device provided by this utility model uses compressed air to blow away rock cuttings from the taphole channel at high speed, keeping the borehole clean, reducing repeated crushing, and thus improving drilling efficiency. At the same time, cooling water atomizes the rock cutting particles, reducing dust dispersion and contributing to environmental protection.

[0016] 6. The blast furnace taphole cleaning and cooling guide device provided by this utility model has a straight and smooth taphole channel, which ensures smooth iron flow and solves the problem of uneven slag and iron discharge caused by iron flow splashing, which restricts the intensified smelting of the blast furnace.

[0017] Based on the above reasons, this utility model can be widely promoted in fields such as blast furnace ironmaking. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the device of this utility model.

[0020] Figure 2 This is a schematic diagram of the through hole structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the sealing groove and water absorption guide groove of this utility model.

[0022] Figure 4 This is a schematic diagram of the water absorption guide hole of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the Y-shaped sealing ring and lip of this utility model.

[0024] Figure 6 This is a schematic diagram of the water outlet guide hole of this utility model.

[0025] Figure 7 This is a structural schematic diagram of the circular flange, fixing bolt holes, and threaded connection holes of this utility model.

[0026] Figure 8 This is a schematic diagram showing that the cooling water of this utility model enters through the water intake guide hole, passes through the through hole, and then flows out of the body through the water outlet guide hole.

[0027] In the figure: 1. Device body; 2. Pipe wall; 3. Through hole; 4. Sealing groove; 5. Water intake guide groove; 6. Water intake guide hole; 7. Y-shaped sealing ring; 8. Lip; 9. Boss; 10. Water outlet guide groove; 11. Water outlet guide hole; 12. Flange; 13. Fixing bolt hole; 14. Threaded connection hole. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] like Figure 1 As shown, this utility model provides a blast furnace taphole machine purging and cooling guide device, including a device body 1. The device body 1 has a tubular structure and is made of stainless steel. It has a through hole in the center of the interior, which runs through the entire device body 1.

[0030] like Figure 2 As shown, four identical through holes 3 are axially arranged on the tube wall 2 of the device body 1. After the through holes 3 are machined, their two ends are welded shut. The four through holes 3 are evenly distributed around the through hole in a circular pattern.

[0031] like Figure 3 As shown, the front outer wall of the device body 1 is provided with three sealing grooves 4 with the same structure, which are the first sealing groove, the second sealing groove and the third sealing groove from front to back. An annular water absorption guide groove 5 is provided on the partition wall between the second sealing groove and the third sealing groove.

[0032] like Figure 4 As shown, four water-absorbing guide holes 6 are radially and evenly distributed on the water-absorbing guide channel 5, and the four water-absorbing guide holes 6 are respectively connected to four through holes 3. The four water-absorbing guide holes 6 are evenly distributed in a circle around the through holes.

[0033] like Figure 1 As shown, three Y-shaped sealing rings 7 are provided on the main body 1 of the device, and the three Y-shaped sealing rings 7 are of the same size. Figure 5 As shown, the Y-shaped sealing ring 7 is provided with a lip 8, and the lips 8 of the three Y-shaped sealing rings 7 are respectively fitted onto the three sealing grooves 4.

[0034] like Figure 1 As shown, a boss 9 is provided on the outer rear wall of the device body 1, and an annular water outlet guide groove 10 is provided on the boss 9. Figure 6As shown, four water outlet guide holes 11 are radially and evenly distributed on the water outlet guide channel 10, and the four water outlet guide holes 11 are respectively connected to four through holes 3.

[0035] like Figure 7 As shown, a circular flange 12 is provided on the boss 9, and multiple fixing bolt holes 13 are evenly distributed on the circular flange 12. A threaded connection hole 14 communicating with the through hole is provided on the outer center of the circular flange 12. The threaded connection hole 14 is fixedly connected to an external air and water supply device, through which compressed air and cooling water are introduced into the through hole of the device body 1. The multiple fixing bolt holes 13 are evenly distributed circumferentially around the threaded connection hole 14.

[0036] In this invention, after the Y-shaped sealing ring 7 wears out, the cooling water enters through the small guide hole (water intake guide hole 6), passes through the through hole 3, and then flows out through the large guide hole (water outlet guide hole 11). This allows for timely detection and repair, preventing cooling water from entering the iron tapping machine and causing the gearbox to burn out.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A blast and cooling guide device for a blast hole opener of a blast furnace, characterized in that, include: The device body (1) is a tubular structure with a through hole inside; multiple through holes (3) are arranged axially around the tube wall (2) of the device body (1), and the two ends of the through holes (3) are welded after processing. The front end of the device body (1) is provided with multiple sealing grooves (4), and an annular water absorption guide groove (5) is provided on the partition wall between two sealing grooves (4). Multiple water absorption guide holes (6) are provided radially around the water absorption guide groove (5), and the multiple water absorption guide holes (6) are respectively connected to multiple through holes (3). The device body (1) is provided with a plurality of Y-shaped sealing rings (7), which are respectively fitted onto a plurality of sealing grooves (4); The rear end of the device body (1) is provided with a boss (9), and a plurality of water outlet guide holes (11) are provided on the boss (9) in a radial circumference. The plurality of water outlet guide holes (11) are respectively connected to a plurality of through holes (3).

2. A blast furnace taphole blower purging and cooling guide device according to claim 1, characterized in that, The sealing groove (4) has three sections, namely the first sealing groove, the second sealing groove and the third sealing groove from front to back. The annular water absorption guide groove (5) is set on the partition wall between the second sealing groove and the third sealing groove.

3. A blast furnace taphole blower purging and cooling guide device according to claim 2, characterised in that, The Y-shaped sealing ring (7) is provided in three parts, and the Y-shaped sealing ring (7) is provided with a lip (8). The lips (8) of the three Y-shaped sealing rings (7) are respectively fitted onto the three sealing grooves (4).

4. The blast furnace taphole blower purging and cooling guide device according to claim 1, characterized in that, The boss (9) is provided with an annular water outlet guide groove (10), and the plurality of water outlet guide holes (11) are provided on the water outlet guide groove (10).

5. The blast furnace taphole blower purging and cooling guide device according to claim 1, characterized in that, A circular flange (12) is provided on the boss (9), and multiple fixing bolt holes (13) are provided on the flange (12).

6. A blast furnace taphole blower purging and cooling guide device according to claim 5, characterised in that, The flange (12) has a threaded connection hole (14) in the middle that communicates with the through hole.

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