KR100851172B1 - Front bit separating type tapping bar - Google Patents

Abstract

The present invention relates to a single opening bit used to excavate the exit port to discharge the melt in the furnace, and the bit is automatically separated after the opening through the exit port to minimize the generation of a large amount of non-oxide and dust immediately after the opening. The present invention relates to a shear bit separating tapping bar in a single opening for suppressing multiple melt ejection phenomena. The present invention is connected to the feed device portion of the opening machine and rotates, the inside is formed in a hollow to convey the cooling medium therethrough, the projection is formed up and down in the front, the groove along the circumferential surface in the lower portion of the projection Formed tapping bar; The excavation bit is formed at the front side, and a recessed portion having the same shape as the protrusion is formed at the rear so that the protrusion of the tapping bar is inserted and fixed therein, and the inside thereof is formed in a hollow shape so that the cooling medium of the tapping bar is moved forward. A body which is transferred to an excavation bit and has a plurality of ball bearings connected to the tapping bar; And a holder 31 inserted into an outer side of the body and mounted to allow a certain distance to move through a spring at an outer side of the body, and compresses the ball bearing to hold the body and the tapping bar firmly. Provides a shearing bit detachable tapping bar in the opening containing the opening.

Tapping, Drilling Bits, Separate, Single Opening, Exit

Description

Shear bit detachable tapping bar in one-shot opening {FRONT BIT SEPARATING TYPE TAPPING BAR}

1 is a process chart showing one-time opening work of a conventional furnace exit.

Figure 2 is a state diagram showing a situation in which dust is generated after a conventional opening through the outlet.

3 is a perspective view of a conventional exit hole free pollution penetrating device.

Figure 4 is a perspective view of the tip bit detachable tapping bar according to the present invention.

5 is an exploded view of the body portion of the removable tapping bar according to the present invention.

Figure 6a is a cross-sectional view immediately before the fastening of the detachable tapping bar according to the present invention, Figure 6b is a fastening cross-sectional view, Figure 6c is a separate cross-sectional view.

7 is a diagram illustrating an internal situation after a single tap through the outlet according to the present invention.

Explanation of symbols on the main parts of the drawings

1: melt 2: outlet

3: scattering melt 4: large melt

5: dust 15: tapping bar

16: excavation bit 17: cooling medium outlet

30: body 30a: stopper                 

31: Holder 31a: Holder Stopper

32: Spring 33: Bearing

36: taper hole 37: seat

The present invention relates to a single opening bit used to excavate a tap hole to discharge the melt in the furnace, and more particularly, the bit is automatically after the tap opening through the tap to minimize the generation of a large amount of non-oxide and dust immediately after the opening. The present invention relates to a shear bit separating tapping bar in a single opening for separating and suppressing simultaneous melt ejection.

In general, as shown in Figure 1, the furnace is provided with an outlet port 2 for discharging the melt 1 inside to the outside, the outlet port 2 is a state in which the mud material of the amorphous refractory material is hardly fired The melt 1 in the furnace is blocked. In the furnace operation, the outlet 2 should be opened by using the opener 10 in order to discharge the continuously generated melt to the outside according to the operation situation.

In this case, as shown in FIG. 1, a tapping bar 15 having an excavation bit 16 attached to a tip end of the opening machine 10 is mounted on a tapping socket 15a and rotated in a forward direction. While progressively advancing the opener body (hereinafter referred to as FEED 12) together with the HAMMER, Drill, and N ₂ Blueing, the exit port 2 is excavated.

On the other hand, the tip bit 16 to be excavated in contact with the high-temperature fired mud material is a high-pressure nitrogen and high-pressure cooling water provided through the open air pneumatic motor and the tapping bar 15 in order to reduce high-temperature friction heat Cooling is made by being sprayed in the part is the excavation opening. Then, when the exit port 2 is penetrated, the retractor 10 retreats the body 12 and starts the reverse hammer, and when the feed 12 is completely retracted, the excavation bit 16 of the excavation rod is the exit port. As it exits from the outlet, the outlet is penetrated and the melt is discharged.

At this time, the opening machine 10 is immediately retracted to a point where it does not interfere with the movement of the sprinkler splash cover (hereinafter referred to as a "cover"), and the sprinkler is covered with a manipulator. After seating on the upper part, the dust collecting hood is advanced to collect a large amount of dust (5) generated together with the melt at the outlet, and the opening is moved to the standby position, and the opening of the outlet is completed. The above work is repeatedly performed 10 to 15 times or more the following day, and the work to open the tap opening is performed.

However, the conventional opening opening work as described above has the following problems as shown in FIG. First, as the outlet 2 penetrates and the melt 1 is discharged, a large amount of dust 5 is ejected at the same time, until the dust 5 covers the large bathway 4 cover (not shown). Instead of being guided by the dust suction device (not shown) on the side of the exit, it is leaked to the outside to generate environmental pollution.

Second, the dog air 10 may be damaged by the fugitive melt 3 and the fugitive flame 3a ejected from the outlet port 2 according to the above-described delayed seating operation, which is enormous for the next outlet excavation work. It will cause an obstacle.

Third, a problem arises that the opening worker causes a safety accident in the scattering melt 3a.

In order to improve the problems as described above, there is a previously filed application number [2001-30399] and the core content is as follows. It is inserted into the distal rod 14 end as shown in FIG. 3, and the distal end portion has a conventional drilling bit shape, and the inside of the fixed ball set part and the bit 14a in which the insertion key 14e and the insertion key are embedded on four sides of the center part. Outlet port excavation bit consisting of a stopper spring (14d) for operating the internal stop square hole (14c) and the stopper: and the outlet port is built in a constant depth inside the outlet (2) has a coolant pipe and hot air flow path Cylindrical SET (14b), automatic valves 52 and 53 for automatically opening and closing the cooling water and hot air in the cooling water and hot air pipes, and N2 automatic valves 57 and 59 purging into the cooling pipe. Thermostat for detecting the temperature of the exit cylindrical set (SET) edge 14b; (54) 55 and the detection unit 64 for detecting the temperature control unit 61 for automatically controlling the opening and closing of the valve Melter outlet port cylindrical set edge (14b) It is a pollution-free opening device composed of).

However, the above invention inevitably arises the following problems.

First, the excavation port (2) excavation work must be excavated more than 3500mm mud material fired at a high temperature, can not penetrate only by normal chisel drilling and chisel hammering, sometimes retreat the excavation bit 14 if a blood section is generated The above-described prior art requires the operator to manually operate the bit 14a remaining inside the exit port 2 as the bit 14a and the tapping bar 15 are separated when the tapping bar 15 is retracted. Because it must be dissolved (acid introducer), it causes a big obstacle in the excavation work.

Secondly, the tapping bar 15 and the drilling bit 14a for excavation openings are discarded after being used as a one-time consumable material. However, the above-described prior art has a complicated and delicate internal structure of the drilling bit 14a and the tapping bar 15. As a result, the material cost can rise rapidly compared to the conventional integrated tapping bar.

Third, the installation of the cylindrical set lead 14b inside the exit port is difficult in reality, and the internal structure is complicated, so that it becomes more difficult to manage in the long term.

The present invention is to solve the above problems, it is possible to retract the excavation bit 16 during the excavation work excavation work using the opening machine 10, and to separate the tip bit 16 immediately after the outlet opening through the melt Its purpose is to prevent excessive dust generation at the same time, to prevent excessive pollution, to prevent environmental pollution, to protect the open air 10 from non-oxidation salt (3a), and to provide a more inexpensive and simple tip separation type drilling bit. .

As a construction means for achieving the above object, the present invention in the opening machine for excavating the exit port of the blast furnace using an excavation bit, connected to the feed device of the opening machine rotates, the inside is hollow It is formed through which the cooling medium is conveyed, the front and bottom projections are formed in the front, the tapping bar formed with a groove along the circumferential surface in the lower portion of the projection; The excavation bit is formed at the front side, and a recessed portion having the same shape as the protrusion is formed at the rear so that the protrusion of the tapping bar is inserted and fixed therein, and the inside thereof is formed in a hollow shape so that the cooling medium of the tapping bar is moved forward. A body which is transferred to an excavation bit and has a plurality of ball bearings connected to the tapping bar; And a holder 31 inserted into an outer side of the body and mounted to allow a certain distance to move through a spring at an outer side of the body, and compresses the ball bearing to hold the body and the tapping bar firmly. Provides a shearing bit detachable tapping bar in the opening containing the opening.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a perspective view of the tip bit detachable tapping bar according to the present invention. 5 is an exploded view of the body portion of the removable tapping bar according to the present invention. Figure 6a is a cross-sectional view immediately before the fastening of the detachable tapping bar according to the present invention, Figure 6b is a fastening cross-sectional view, Figure 6c is a separate cross-sectional view.                     

First, as shown in Figure 4 in order to reduce the hole of the cooling medium outlet 17 located in the tip of the excavation bit 16, the hole size is smaller than the spout 17 and the shape is formed in the tapper (Taper) type drill bit ( 16) An aluminum nozzle 16a having a structure in close contact with the tip portion is inserted. Meanwhile, the body 30 is welded with the excavation bit 16 and the other side inserted into the body 30 is welded 45 to the tapping bar 15 so that the separate tapping bar is made and the body 30. The diameter of the excavation bit 16 is composed of a size smaller than the diameter. 4 and 5, the outer side of the body 30 has a cylindrical holder 31 surrounding the outer circumferential surface and a holder stopper 31a having a right angled shape with a holder seat 40 having an inclined jaw shape. The inside of the holder 31 has a diameter that freely moves the outer circumferential surface of the body stopper 30a, and the moving section is freely reciprocated in the stopper ring 38 and the body stopper 30a.

However, the holder 31 can no longer be moved by the structure pushed to one side by the spring 32 inserted therein or by the stopper ring 38 in contact with the holder seat 40, and the other side is the tapping bar 15. When the holder 32 is artificially pushed to press the spring 32 in order to engage with the) side, the body stopper 30a can no longer move. Also. On the outer circumferential surface of the body 30, a stopper ring groove 38a having a size into which the stopper ring 38 is fitted is machined in a semicircle on one side, and the outer side is freely inserted to insert a bearing 33 of a predetermined size in the vicinity thereof. A tapered hole 36 of a size that does not exit inward is penetrated to the inside.

Meanwhile, as shown in FIGS. 4 and 5, an insertion hole 35 is formed in the body 30, and the shape of the body 30 is opposite to the shape of the wedge 35a on the tapping bar 15 side. (35) It is a structure that enters the inside and the shape of the wedge (35a) is divided into four-shaped cylindrical pipe of a certain thickness, the length of the wedge (35a) is made of the same structure as the length of the insertion hole (35). Then, there is a swelling groove 34a into which the ring-shaped packing 34 for sealing the cooling medium is inserted, and a sheet 37 is formed in close contact with the sheet contact surface 37a on the side of the tapping bar 15.

In addition, a bearing groove 33a in contact with the bearing 33 is machined on the tapping bar 15 side, and as shown in FIG. 6B, a square groove 48 has a stopper ring 38 of the body 30 at an inner side thereof. It is processed at the same position as the inserted site.

On the other hand, the material and mechanical properties of the stopper ring 38 is as follows. Trademarked name for ultra-high molecular weight polyethylene powder (PE-UHMW) produced by Hoechst AG, Germany, according to DIN 16783, aka GUR, the molecular weight appears to range from 3.2 to 10.5 million g / mol when measured on viscometers . In addition, ultra high molecular weight polyethylene exhibits high mechanical properties due to its very high molecular weight. In particular, the notch impact strength and wear resistance must be very large in order to withstand excessive impacts during one-time excavation.

However, all of the above mechanical properties drop sharply above 200 ° C. Especially, since GUR is viscoelastic, dimensional stability is very high, but pyrolysis and resulting softening occur.

Referring to the drawings the operation of the shear bit detachable tapping bar in the opening of the opening according to the present invention as described above are as follows. 7 is a diagram illustrating an internal situation after a single penetration of a starting tap according to the present invention.

First, as shown in FIG. 6, the detachable body 30 and the excavation bit 16 are welded 46 to fasten the integrated body 30 with the tapping bar 15 to spring 32. When the wedge 35a of the tapping bar 15 is inserted after pushing in the opposite direction to the tension, the sheet contact surface 37a is inserted into the body 30 while pushing the bearing 33 outward.

Thereafter, as shown in FIG. 6B, the seat 37 and the seat contact surface 37a of the body come into close contact with each other, and the bearing 33 and the bearing groove 33a coincide with each other, and the holder 31 is applied to the tension of the spring 32. The holder sheet 40 pushes the bearing 33 inward while returning to the original position. At this time, the holder 31 is no longer moved by the stopper ring 38 and the bearing 33 is prevented from coming out by the holder 31.

The above operation will be described in more detail as follows.

The tip separating type drilling bit 16 is rotated according to the pneumatic motor 12 rotational operation, the pneumatic motor is advanced along the frame 10b, and the mud material of the tapping opening 2 is drilled to open the tapping opening 2. . In addition, the tip separating type drilling bit 16 rotates under high pressure nitrogen in the shear separation type tapping bar 15 provided through the pneumatic motor 12 and the tapping bar 15 to remove frictional heat generated from the rotating part. When the high pressure cooling water is injected, the stopper ring 38 maintains the proper temperature by the internally reduced type aluminum nozzle 16a and the square groove 48.                     

Meanwhile, as shown in FIGS. 6C and 7 after completion of the tapping opening 2, when the separate tapping bar 15 requires the separation of the drilling bit 16 after the drilling penetration inside the hot tap opening 2, the cooling medium 16 is removed. When the (cooling water + nitrogen) is blocked, the hot melt penetrates into the square groove 48 and applies a rapid heat to the stopper ring 38 at the same position, which causes the stopper ring 38 to be bitten at a high temperature. Loss of mechanical strength no longer acts as a stopper ring 38, the tapping bar as the holder 31 is separated from the body 30 by the tension of the spring 32 and the bearing 33 is pushed outwards. 15 are separated.

When the separation process is completed, retreat the opener 10 as shown in Figure 2 to move to a safe place, and seat the cover on the top of the Daetangdo (4) and then advance the dust collection hood to move to the dust collection standby position The opening of the exit port is completed.

Then, the excavation bit 16 remaining in the outlet port 2 and the tapper-type aluminum nozzle 16a inserted therein are rapidly melted and extinguished, and a small amount of melt comes out to the cooling medium ejection port 17 and then the excavation bit 16. At the same time as melting, multiple melts are started, but large hot water (4) cover and dust collector are installed first, so there is no visible pollution (5) and non-oxide (3a).

As described above, according to the present invention, it is possible to retreat the drill bit during the excavation work using the opening hole, and to separate the tip bit immediately after the opening of the outlet to prevent the simultaneous multiple ejection of the melt to suppress the excessive dust generation environment It is effective in preventing contamination, protecting open air from non-oxidation salts, and providing a more inexpensive and simple distal tip drill bit.

While the invention has been shown and described with respect to particular embodiments, it will be understood that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (4)

In the opening machine for excavating the exit of the furnace using the excavation bit, It is connected to the feed device of the opening machine and rotates, the inside is formed in a hollow form to convey the cooling medium therethrough, the projection is formed up and down in front, the bearing groove is formed along the circumferential surface in the lower portion of the projection Tapping bar 15; The excavation bit is formed at the front side, and a recessed portion having the same shape as the protrusion is formed at the rear so that the protrusion of the tapping bar is inserted and fixed therein, and the inside thereof is formed in a hollow shape so that the cooling medium of the tapping bar is moved forward. A body 30 which is transferred to an excavation bit and equipped with a plurality of ball bearings at a connection position with the tapping bar; And A holder 31 inserted into the outside of the body and mounted to allow a certain distance to be moved through a spring from the outside of the body, and compresses the ball bearing to firmly maintain the coupling between the body and the tapping bar; Shear bit detachable tapping bar in a single opening. 2. The body of claim 1, wherein the body comprises: a stopper ring (38) inserted at the rear end; A spring inserted into the holder mounting portion; A body stopper (30a) formed adjacent to the front end of the holder to limit the movement distance of the holder; And And a packing 34 inserted into and fixed to the inside of the spring insertion part. The holder includes a protruding holder stopper 31a which abuts against the spring of the body to maintain its position, Wherein the holder stopper is in contact with the spring is formed at a right angle, the contact portion is in contact with the stopper ring is formed inclined obliquely in shear opening-type tapping bar. The method according to claim 1 or 2, wherein the tapping bar 15 is inserted to form a groove in the inside of the tapping bar where the stopper ring of the body is located, so that the stopper ring is formed by the melt after the excavation work is completed. Shear bit detachable tapping bar in a blow opening, characterized in that to be easily melted. According to claim 3, wherein the body is formed with a cooling medium jet hole in the tip of the drilling bit, the cooling medium spray nozzle having a smaller hole size and a tapered shape than the jet port is mounted in the jet hole, Shear bit separation type tapping bar in the opening of the opening, characterized in that the material of the injection nozzle is aluminum.

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