KR20010064781A - A rod and drill bit for using in puncturing the tap hole of the blast furnace - Google Patents

Abstract

PURPOSE: A one shot rod for a hole opener and a drill bit adhered to the front of the rod are provided which reduce working load of an operator and improve safety by improving the one shot rod so that the tap hole is easily penetrated. CONSTITUTION: In a hollow type one shot rod which is mounted to a hole opener opening a tap hole of a blast furnace, and to one end of which a plurality of drill bits are adhered, the one shot rod for the hole opener comprises a first pipe having a relatively large diameter; and a second pipe having a relatively smaller diameter, wherein the second pipe is inserted into the first pipe on the same axis so that fluid can be penetrated into the hollow part of the second pipe and the hollow part between the first pipe and the second pipe. In a drill bit mounted to the front end of the hollow one shot rod that is mounted to a hole opener opening a tap hole of a blast furnace, a drill bit comprises two first drill bits (10a) having relatively long lengths; and two second drill bits (10b) having relatively short lengths, wherein the first and second drill bits (10a,10b) are alternately adhered, a nozzle is formed between the bits, the nozzle is connected to the hollow part of the one shot rod so that fluid can be circulated.

Description

A rod and drill bit for using in puncturing the tap hole of the blast furnace}

The present invention relates to a single rod and a drill bit mounted on an opening hole for penetrating a tap hole through which a melt inside the blast furnace is discharged, and more particularly, to easily penetrate a blood node portion generated when penetrating the tap hole. And a drill bit attached to a tip of the rod for opening.

In general, the blast furnace operation inputs iron ore as raw material and coke as fuel at an appropriate ratio, and then supplies hot hot air from the hot blast furnace to discharge molten melt from the blast furnace to the outside of the blast furnace for a predetermined time. Repeat the work at regular intervals.

In order to discharge the melt inside the blast furnace to the outside in the above process, as shown in Figure 1, using the opening machine 104 to excavate through the mud material closing the inside of the exit port. At this time, as shown in Fig. 3 and 4, a bit (BIT) is attached to the tip having a constant size and diameter of the single rod 107 mounted on the opening hole 104 installed on the outlet 102 side Are welded.

On the other hand, the guide rails 105 are formed in both sides of the opening machine 104 along the longitudinal direction, and the operation rails 106 which slide along the operating direction are installed in the guide rails. Then, the rotation rod of the operation motor 106 is coupled to the rod 107, which moves forward and backward along the direction of operation, and the bit 108 for drilling the mud material closing the exit port of the furnace at the tip of the rod rod Are mounted in a radial form in a 120 degree direction.

In the center of the drill bit, as shown in FIG. 5, four injection holes 11 are formed to inject high pressure nitrogen and cooling water.

Therefore, when the opening machine 104 is installed in front of the tap-hole 102, the single rod 107 with the bit 108 is in close contact with the tap-out surface, and the operating motor 106 installed in the mounting bed is driven. In addition, the drill rod 108 works with rotation to excavate the mud material that blocked the tap hole.

By the way, in the mud material which blocked the inside of the exit port, due to the poor contact between the new mud material and the spherical mud material and the excessive hammering effect when penetrating the mud material through the opening machine 104, as shown in Figure 2, A crack (CRACK) is generated inside the exit port, which is called a blood cell 103. When such a blood site is generated, the melt in the furnace flows into the blood site and solidifies.

As described above, since the drill rod 108 according to the conventional embodiment has three drill bits 108 attached to the tip of one cylindrical pipe, the drill bits 108 are not only easily worn at these blood nodes. As it penetrates the blood vessels, the pipes are easily glowing and melting.

Therefore, in order to open the blood cell site using the single rod 107, the hassle of exchanging the single rod about two to three times is generated, and the opening port must be opened using a separate oxygen pipe. Hassle is caused.

Since the single rod in use is overheated by the radiant heat of the melt, a safety accident of burns occurs during the exchange operation. When the opening using the oxygen pipe, the oxygen pressure is over 16㎏ / ㎠, Since it is ejected through, not only a safety accident such as a burn is generated, but there is a problem of causing air pollution by dust or the like.

In addition, the conventional rod has the following problems.

However, when a blood cell occurs, the pipe of the single rod is glowing and the digging force is reduced.

Secondly, since only three excavation blades of a single rod are attached in the direction of 120 degrees, bit wear is severe.

Third, the worker's work load, such as oxygen opening or one-time rod replacement, is increased due to unopened outlet.

Fourth, it is difficult to accurately mark the center of the exit port, which increases the workload during the departure process.

In order to solve the problems as described above, the present invention is to improve the blow bit to facilitate the passage of the tap opening and also to easily penetrate the tap at the blood vessels to reduce the workload of the operator and also improve safety It is an object of the present invention to provide a blow rod for opening machines and a drill bit attached to the tip thereof.

According to the present invention, in order to achieve the above object, a guide rail is formed along the longitudinal direction on both sides of the opening machine for excavating the blast furnace outlet, and the guide rail has a sliding motor moving along the moving direction. Installed. In the opening of the blast furnace opening opening made of a structure that is coupled to the operation shaft rotation shaft is coupled with a single rod with a drill bit forward and backward along the direction of operation, the drill bit in the tip end of the first rod in the direction of 90 degrees Four pipes are attached and the main pipe consists of a double pipe, and the external pipe and the internal pipe of the double pipe are simultaneously supplied with high pressure nitrogen and cooling water.

1 is a view showing that the opening is mounted on the exit port of the blast furnace according to the prior art embodiment.

2 is a view showing that the blood plasma region is generated in the exit port in accordance with a conventional embodiment.

Figure 3 is a view showing a single rod for the open air according to a conventional embodiment.

Figure 4 is a perspective view of a drill bit attached to the tip of the single rod for opening machine according to the prior embodiment.

5 is a front view of a drill bit according to a conventional embodiment.

Figure 6 is a view showing a single rod for opening machine according to an embodiment of the present invention.

Figure 7 is a perspective view of a drill bit attached to the tip of the blow rod for opening the air in accordance with an embodiment of the present invention.

8 is a front view of a drill bit according to an embodiment of the present invention.

<Description of the reference numerals for the main parts in the drawings>

102: exit

104: opening machine

105: guide rail

106: operation motor

10a: 1st drill bit

10b: 2nd drill bit

10C: 3rd drill bit

12: outer pipe

13: inner pipe

14: connection hole

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the present invention as follows, the same configuration adopts the same reference numerals.

6 is a view of a single rod according to an embodiment of the present invention, Figure 7 is a perspective view of a drill bit mounted to the tip of the rod, Figure 8 is a front view of the drill bit.

According to the present invention, the rod 15 mounted on the opening is formed in a double pipe structure consisting of an inner pipe 13 and an outer pipe 12. The inner and outer pipes 13 and 12 are connected to each other so that fluid can be communicated by four connection holes 14 formed at the front and rear ends thereof. That is, the high pressure nitrogen and the cooling water passing through the pipes 13 and 12 communicate with the connection hole 14.

In addition, four drill bits 10 are attached to the distal end of the single rod 15, and an injection hole 11 for injecting high pressure nitrogen and cooling water through the pipes 12 and 13 of the single rod to the outside is located at the center thereof. It consists of five pieces, one and four between bits.

In addition, the drill bit 10 includes two first drill bits 10a having a relatively long length and two second drill bits 10b having a short length. That is, two pairs are formed so that the first drill bit 10a is about 10 mm longer than the second drill bit 10b, and at the end of the first drill bit, there is a third drill bit 10c.

It refers to the actual action of the present invention configured as described above.

First, in order to discharge the melt inside the blast furnace, the opening machine 104 is installed on the hook 110 provided at the front of the outlet, and then the operating motor 106 rotates. The drill bit 10 along the guide rails 105 is inserted into the exit port while the rod 15 is welded to the distal end is carried out to perform the excavation work.

At this time, the high pressure nitrogen and the coolant supplied from the opening unit 104 body are supplied to the inner pipe 13 and the outer pipe 12 of the single rod 15. Therefore, even when the outer pipe 12 is melted by the molten iron accumulated inside the outlet 102 due to the formation of blood cells 103 at the opening of the outlet, the rotational force of the body of the opening 104 is connected to the drill bit. Rotation is possible.

The high pressure nitrogen and the coolant supplied are cooled through the four injection holes 11 formed between the bit and the bit and one injection hole 11 in the center, respectively, and then the first and the second mud material (MUD) having two different lengths. The drill bit consisting of the second drill bits 10a and 10b and the third drill bit 10c is excavated after marking the correct center CENTER with the third drill bit formed as a protrusion.

At this time, when the first drill bit 10a having a relatively long length is worn out during the drilling, the drilling is continuously performed using the second drill bit 10b having a relatively short length.

The present invention has the following effects as compared to the conventional method.

First, since the single rod pipe is a dual structure, even if the external pipe is melted by blood cells, the high pressure nitrogen and the cooling water may pass through the drill bit to exhibit a cooling effect.

Second, since the injection port for injection of high pressure nitrogen and water from the drill bit is increased from four to five, the cooling effect is better and the excavation force is improved.

Third, since the drill bit is increased from three to four and is composed of two pairs of different lengths, the first two drill bits are first worn out by marking the center of the exit port. Excavation with two second drill bits afterwards results in better drilling center marking and longer drill bit life in the outlet.

The foregoing is merely illustrative of the preferred embodiments of the present invention and those skilled in the art to which the present invention pertains may make modifications and changes to the present invention without departing from the spirit and gist of the invention as set forth in the appended claims. It should be recognized.

Claims (4)

In the hollow type single rod which is attached to the opening machine for opening the blast furnace opening hole, and a plurality of drill bits are attached to one end thereof, Relatively large diameter of the first pipe, A second pipe having a relatively small diameter inserted coaxially with the first pipe, And a hollow portion between the hollow portion of the second pipe and the hollow portion between the first pipe and the second pipe are connected to allow fluid communication. In the drill bit mounted to the tip of the hollow single rod to be mounted to the opening machine for opening the blast furnace opening, Two relatively long first drill bits, Two relatively short drill bits, The first drill bit and the second drill bit are alternately attached, the drill bit, characterized in that the injection port is formed between the bit and the fluid communication is connected to the hollow portion of the rod. 3. The drill bit of claim 2, wherein a protruding drill bit having a predetermined size is formed at a front end of the drill bit. According to claim 2 or claim 3, wherein the drill rod is attached to the rod comprises a relatively large diameter of the first pipe, and a relatively small diameter of the second pipe coaxially inserted into the first pipe, characterized in that Drill bits.