KR100762477B1 - Apparatus for boring tap hole in a blast furnace - Google Patents

Abstract

The present invention relates to a gutter opening device of the blast furnace, and more specifically, having a square insertion key at the tip of the excavating rod and having a round hollow blower pipe at the tip thereof, and a sealing rod inserted therein; A fixed ball inserted into the distal rod end and having a distal end shape and a screw thread formed on an outer surface of the insertion key and the inner surface of the insertion key at four sides of the insertion rod and protruding by an elastic spring; A stopper spring for elastically supporting the inner diameter square hole and the stopper embedded in the excavation bit; It consists of a tap-shaped cylindrical set smoker with a built-in tap-out and a cooling-water supply, drain pipe, and hot air supply and drain-pipe.

In the present invention, the present invention prevents the occurrence of safety accidents by the high temperature melt discharged from the outlet at the time of opening of the outlet, collects a large amount of dust discharged from the outlet, and sucks the whole amount out of the outflow dust collector damper. It prevents the pollution and prevents the loss of the open air from the melt of high temperature, thus extending the service life of the blast furnace.

Description

Opening device for opening of blast furnace {APPARATUS FOR BORING TAP HOLE IN A BLAST FURNACE}

1 is a schematic view of the opening opening opening,

2 is an exploded perspective view of the drilling bit and the detachable rod according to the present invention;

3 is an excavation bit and detachable rod assembly according to the invention,

Figure 4 is a configuration diagram and a tap opening set according to the present invention,

5 is a state diagram showing a tap hole digging state according to the present invention,

Figure 6 is a cross-sectional view showing the exit hole drilling bit separation state according to the present invention,

7 is a perspective view of the completion of the opening opening in accordance with the present invention.

* Description of the symbols for the main parts of the drawings *

1: blast furnace 2: melt

3: Daetangdo flow cover 4: Outflow dust collection hood (HOOD)

5: Outflow Dust Collector Damper 6: Outlet

7: Outlet Damper 8: Daetangdo

9: dust 10: manipulator

11: Open air 12: Open air body

13: Excavating Rod (ROD) 14: Separate Rod (ROD)                 

14-1: fixed ball 15: insertion key (KEY)

16: Sealing packing 17: Blowing pipe

     18: Male thread 19: Elastic spring

30: Dig bit (BIT) 31: Stopper spring

32: Stopper fixing pin 33: Bore size insert key fixing ball groove

34: pin spring 35: internal angled hole

36: stopper 37: male thread

38: Go-ro Yeon and 39: Outboard cylindrical set Yeon-wa

40: cooling water supply pipe 41: cooling water drain pipe

42: hot air supply pipe 43: hot air discharge pipe

44: blast furnace hot air outlet 45: blast furnace hot air outlet

50: cooling water supply valve 51: cooling water drain automatic valve

52: hot air supply automatic valve 53: hot air discharge automatic valve

54: coolant thermometer 55: kite and thermometer

56: nitrogen supply piping 57: nitrogen supply automatic valve

58: nitrogen discharge pipe 59: nitrogen discharge automatic valve

60: exit depth measuring instrument 90: temperature detector

100: control unit 200: blast furnace process computer

The present invention relates to an opening device for opening the blast furnace, and more particularly, in the opening of the exit opening with the opening to discharge the melt inside the blast furnace, when the penetration through the exit and ejected in large quantities at the same time with the melt It is a blast furnace opening device that allows dust to be discharged by the blast furnace opening device without releasing dust to the outside of the blast furnace.

In general, the operation of the blast furnace (1) loads iron ore and coke at a predetermined ratio into the upper part of the blast furnace (1) and the hot blast (1200 ° C.) produced in a hot blast furnace (not shown) through the blast furnace (1) annular tube. By blowing to the lower part of (1), the iron ore and coke charged into the blast furnace 1 are caused to melt and reduce with hot hot air (1200 ° C.) to produce molten iron.

The operation of discharging the molten iron produced as described above to the outside of the blast furnace (1) is called a starting work, the drawing work is as follows.

First, the large-scale water flow cover 3 is removed from this large-scale waterway 8, and the outflow dust collection hood 4 which collects the dust which flows out of the blast furnace 1 is retracted.

Mounting the excavating rod 13 attached to the distal end of the drilling bit 30 to the opening machine 11, and turning the opening machine 11 to be located close to the outlet 6, the opening machine 11 The tip end drilling bit 30 of the drilling rod 13 mounted in close contact with the exit port 6 to rotate the drilling rod 13 in the forward direction.

Subsequently, using the forward hammer (not shown), the opening body 12 is slowly advanced to excavate the tap hole 6, and when the tap hole 6 is penetrated, the back hole body 12 is retracted and moved backward. A hammer (not shown) is activated to fully retract the opening body 12.

Thereafter, the tip end drilling bit 30 of the excavation rod 13 exits from the outlet 6 and the outlet 6 is penetrated and at the same time the melt 2 is discharged.

The opener 11 is moved to a standby position, and the opener 11 is manipulator (MANIPULATOR) at a point where the opener 11 does not interfere with the opener cover 3. 10) move to the outlet damper (7) side and advance the dust collector dust hood (4) to collect a large amount of dust (9) generated with the melt (2) in the outlet (6) dust suction device (not shown) After guided to the opening machine 11 is moved to the standby position and the opening work of the exit port (6) is completed.

The work as described above is carried out to the opening port 6 repeatedly 10 to 15 times the next day or more.

However, when opening the exit opening 6 with the excavation rod 13 mounted on the opening opening 11, that is, the molten material 2 is discharged, the opening opening 11 is opened to a predetermined point. There is the following problem in the process of opening the exit opening 6 by covering the Daetangdo flow cover 3 after evacuation.

First, a large amount of dust is ejected at the same time as the outlet 6 penetrates and the melt 2 is discharged. The dust is sucked into the dust on the side of the outlet 6 until the dust cover is covered. It does not lead to the equipment but leaks to the outside, causing environmental pollution.

Second, the opening machine 11 is melted by the melt 2 scattered due to the opening and excavation of the large water flow cover 3 and the excavation of the melt 2 during the opening of the exit opening 6. Exposure to the melt 2 causes safety accidents in the hot melt fly-bys.

The present invention has been created to solve the above problems, by separating the excavation bit of the excavation rod mounted in the open hole to move the open hole to the standby position and then placed the countertop flow cover at the top of the counter, dust spill The purpose of the present invention is to provide a factory for opening the outlet of the blast furnace for discharging the melt through the outlet after moving the dust collection hood to the outflow dust collector damper.

The above-described object of the present invention is equipped with a square rod (33) at the distal end of the excavating rod (13) and a round hollow blower pipe (17) at the distal end thereof, with the sealing rod (16) inserted therein; ; Is inserted into the distal end of the rod 14, the distal end portion has the shape of the drilling bit 30, the insertion key 15 and the thread is formed on the outer surface embedded in the four sides of the insertion key 15, the elastic spring (19) A fixed ball 14-1 protruding by; A stopper spring 31 for elastically supporting the inner diameter square hole 35 and the stopper 36 embedded in the excavation bit 30; Cooling water supply and drain pipe (40, 41) and hot air supply and discharge pipes (42, 43) are formed integrally formed on the wall of the blast furnace (1) surrounding the tap opening (33) is arranged spirally inside It is achieved by including the edge 39.

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

Figure 2 is an exploded perspective view of the excavation bit and the detachable rod according to the present invention, Figure 3 is an assembly view of the excavation bit and the detachable rod according to the present invention, Figure 4 is a block diagram and configuration of the outlet cylindrical cylindrical set according to the present invention, 5 is a state diagram showing the exit hole excavation state according to the present invention, Figure 6 is a cross-sectional view showing a disconnection hole excavation bit separation state according to the present invention, Figure 7 is a perspective view of the completion opening opening port according to the present invention.

According to Figures 2 to 3, the existing drilling bit 30 in the predetermined portion of the existing end of the conventional drilling rod 13 by separating the configuration of the insertion key 15 of a predetermined size to be combined with the existing drilling bit 30 And a fixed ball 14-1 is built into each surface thereof, and a tip of the blower pipe 17 is formed of a round outer diameter tube, and a sealing packing 16 is inserted into the tip of the blower pipe 17. The front end and the rear end are provided with a separate rod 14 made of a bore to be inwardly of each other.

The excavation bit 30 is a tip end portion has a conventional drilling bit shape and the inner diameter of the rear end is formed with an inner diameter square hole 35 is seated in the rectangular insertion key 15 of the predetermined portion of the distal rod 14, The round half-hole is machined on each of the inner inclined holes 35 so that the fixing ball 14-1 of the insertion key 15 can be easily seated, and the blower pipe 17 is disposed at the tip of the inner inclined hole 35. The inserted round hole is processed into the front end drilling bit (30) and the injection hole (not shown) and the inner surface, the outer surface of the drilling bit (30) is a square in the inner inclined hole (35) at a predetermined point of the inner end square hole ( 35) funnel-shaped funnel-shaped square holes are formed at the rear end of the drilling bit 30 and inclined at an angle between 50 ° and 60 ° to the rear end of the drilling bit 30. And the portion protruding to the outer surface of the excavation bit 30 is pointed to have a sawtooth shape Processed and inserted into the inside is formed in a square rounded stopper 36 is bent in a '-' shape, the stopper spring 31 is coupled to the outer side of the blow pipe (17), the The stopper 36 is inserted to be fixed by the fixing pin 32 so that the square-shaped surface is inserted into the excavation bit 30 so as not to interfere with the blower pipe 17. At this time, the stopper 36 exposed to the outside is easily configured before and after the rotational movement of 50 ° ~ 60 ° by the physical force.

When the front end portion of the separate rod 14 is inserted into the excavation bit 30 in the above-described configuration, the blower pipe 17 and the inner inclined hole 35 are coupled to each other, and the sealing is made by the sealing packing 16. Then, the square insert key 15 of the detachable rod 14 is inserted into the inclined hole 35, and the stopper 36 rotates by 50 ° to 60 ° while pressing the lower part of the stopper 36 with physical force. It is positioned so as not to protrude from the outer side of the 30. In addition, the fixed ball 14-1 of the insertion pin is coupled to each other while being seated in the insertion hole 33, the combined drilling bit 30 and the separate rod 14 is a separate drilling rod for opening the exit opening 13 Becomes

On the other hand, as shown in Figure 4 from the exit port 6 3200mm from the exit port, the exit cylindrical set yeonwa 39, which is a refractory having a certain size and thickness is configured to surround the exit port 6 in a circular shape. The hot air supply pipe and the coolant supply pipe having a rectangular blast furnace hot air supply port 44 and a circular cooling water supply port 46 are formed in the outlet cylindrical set kite 39. It is integrally manufactured to form a spiral flow path so as to be wrapped in a circle and circulated in each direction.
In the above-described configuration, the hot air supply pipe 42 connected to the annular tube (not shown) of the blast furnace 1 by the castable refractory installed therein for the introduction of the hot air is a blast furnace hot air supply hole of the starting cylinder-shaped kite 32. 44 is also connected to the blast furnace hot air outlet 45 side in the same way is connected to the hot air discharge pipe 43 to facilitate the flow of hot air. And the cooling water supply pipe 46 and the cooling water drainage pipe 41 having the same size is connected to the cooling water supply port 46 and the cooling water drainage port 47, the circular pipe is inserted, the cooling water supply pipe 40 for quenching The blast furnace 1 is connected to a high pressure cooling pipe (not shown) to form a cooling pipe through which the cooling water flows.

Hot air supply pipe 42 constituting the installed hot air pipe and the hot air supply pipe (42) forming the hot air supply pipe for forming the hot water and the cooling pipe of the cooling water supply pipe 40 and the cooling water drain pipe 41 forming the cooling pipe (32) The cooling water thermometer 54 and the kite thermometer 55 are built in the inside, and the hot air supply automatic valve 52 and the hot air discharge automatic valve 53 are provided in the hot air supply pipe 42 and the hot air discharge pipe 43, respectively. A coolant water supply valve 50 and a coolant drain valve 51 are also attached to the water supply pipe 40 and the coolant drain pipe 41, and nitrogen is supplied to the coolant water supply pipe 40 and the coolant drain pipe 41 to protect the coolant pipe. The supply pipe 56 and the nitrogen discharge pipe 58 are combined, and the nitrogen supply automatic pipe 57 and the nitrogen discharge automatic valve 59 are respectively installed in the nitrogen supply pipe 56 and the nitrogen discharge pipe 58, respectively. It is equipped with a precursor cylindrical set kite (32).

And the exit opening (6) the opening hole (11) for opening the opening hole depth measuring device (60) for measuring the opening depth of the opening hole (6) equipped with the opening hole body (12) ultrasonic wave is discharged when the opening body (12) Process the time to reciprocate up to (12) to measure the depth of the outlet (6), the outlet depth measuring device 60, hot air supply automatic valve 52, hot air discharge automatic valve 53, cooling water supply valve (50) The cooling water discharge automatic valve (51), nitrogen supply automatic valve (57), nitrogen discharge automatic valve (59), temperature detector (90) are connected to each other by an electrical cable, and a control unit (100) is configured to control them. It is connected to each other and the configuration is operated by the control unit.                     

The present invention made up of such a configuration works as follows.

The detachable rod 14 mounted on the opening machine 11 has an excavation bit 30 coupled to the front end of the detachable rod 14, and the insertion key 15 of the front end of the detachable rod 14 is inserted into the excavation bit 30. It is coupled with the inclination angle hole 35. The excavation bit 30 is fixed to the insertion key fixing ball 14-1 embedded in the detachable rod 14 and the insertion key 15 in close contact with the drilling bit 30 and the inner diameter insertion key fixing hole 33. At this time, the insertion key 15 is fixed to the excavation bit 30 internal inclination hole 35, so that the front end of the insertion key 15 pushes the bottom of the stopper 36, so that the top of the stopper 36 is at the rear of the excavation bit 30. Mounted in a pushed state so that the stopper 36 is inclined to have the same height as the outer surface of the drilling bit 30 so as not to protrude from the outer surface of the drilling bit 30. As described above, when the drilling bit 30 is coupled to the separate rod 14, the mounting of the drilling bit 30 is completed in the opening 11 that opens the exit port 6. After the opening hole 11 is rotated to excavate the outgoing hole. The excavation work of the outgoing hole 6 is completed when the excavation work is detected at 4000 mm or more by the outgoing hole 6 excavation depth measuring device 60. Recognizing that the control unit 100 opens the cooling water supply valve 50 of the tapping cylinder-shaped kite (39) and passes through the cooling water and performs the retreat operation of the opening body 12. At this time, the opening body 12 is reversed and the reverse hammer is not operated. The opening depth of the tap opening 6 during the backward opening of the opening body 12 is often transmitted to the control unit 100 and 3200 mm from the tap opening 6. When the control unit 100 detects the excavation depth, the opening body 12 is temporarily stopped at the point of the tapping-out cylindrical set kit 39, and the coolant thermometer 54 embedded in the tapping-out cylindrical set kit 32 is installed. When the temperature of) drops to 70 ° C, the cooling water supply valve 50 and the cooling water drain automatic valve 51 are closed.

In this process, the internal temperature of the tapping-shaped cylindrical set lead 39 is quenched and the connection between the separate rod 14 and the excavation bit 30 is instantaneously cooled, and the reverse opening of the opening body 12 is performed when the backward hammer is operated. The detachable rod 14 mounted on the air body 12 has an insertion key 15 pushing the stopper 36 in the excavation bit 30 while the insertion key 15 installed at the front of the detachable rod 14 is moved to the rear. As the shear is released, the stopper 36 stands in the shape of a single letter by the stopper spring 31 pushing the stopper 15 shear, and thus the contactor is in close contact with the outgoing hole. When the four stoppers 36 installed are operated simultaneously and the stopper springs 31 are designed to have a greater force than the elastic springs 19 embedded in the fixed balls 14-1, when the opening body 12 is retracted. The detachable rod 14 and the drilling bit 30 are easily separated by the operating BACK HAMMERING operation. The opening machine 11 is equipped with only the separate rod 14 and moves to the standby position (FIG. 7), and moves the manipulator 10, which is a device for collecting the large flowway cover 3 to the upper side of the large flowway 8, and outflow. When the dust collection hood 4 is advanced and the operation is completed, the hot air supply automatic valve 52 and the hot air discharge automatic valve 53 are opened in the control unit 100 so that high temperature hot air is introduced through the hot air supply pipe 42 and discharged. When the lead cylindrical set kit 39 is heated and the kite and thermometer 55 embedded in the outlet cylindrical set kit 39 become 800 ° C., it is in contact with the starting cylindrical set kit 39 and is in the outlet port 6. The fixed drilling bit 30 (iron transformation point 768 ° C.) is melted at the same time as heating and is melted by the internal melt 2 and at the same time the melt 2 is discharged by the pressure in the furnace, and the tapping-shaped cylindrical set smoke 39 is used. ) And the thermometer (55) built in the (800) when the 800 ℃ detection detects the hot air supply automatically from the control unit (100) The valve 52 and the hot air discharge automatic valve 53 are closed and the nitrogen automatic valves 57 and 59 are opened to purge the cooling water supply pipe 40 to purge the molten material through the outlet 6. ) When discharging, it protects the tap-hole cylindrical set lead 39 and the opening of the tap-hole 6 is finished.

As described in detail above, the present invention prevents the occurrence of safety accidents of workers by the high temperature melt discharged from the outlet at the time of opening of the outlet, and collects a large amount of dust discharged from the outlet, so that the total amount of the dust in the dust collector damper It prevents environmental pollution by inhalation and prevents melting of open air from high temperature melt, thus extending the life of equipment and providing stable operation of blast furnace.

Claims (1)

A detachable rod 14 having a rectangular insertion key 33 at the tip of the excavating rod 13 and a round blower pipe 17 at the tip thereof and having a sealing packing 16 inserted therein; Is inserted into the distal end of the rod 14, the distal end portion has the shape of the drilling bit 30, the insertion key 15 and the thread is formed on the outer surface embedded in the four sides of the insertion key 15, the elastic spring (19) A fixed ball 14-1 protruding by; A stopper spring 31 for elastically supporting the inner diameter square hole 35 and the stopper 36 embedded in the excavation bit 30; Cooling water supply and drain pipe (40, 41) and hot air supply and discharge pipes (42, 43) are formed integrally formed on the wall of the blast furnace (1) surrounding the tap opening (33) is arranged spirally inside Opening port opening device of the blast furnace, characterized in that comprising a yeon (39).

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