KR200272216Y1 - Melting backflow prevention structure of opening machine - Google Patents

Abstract

The present invention relates to a molten iron backflow prevention structure of an opener which is embedded in a tapping socket connecting a hole drill and a hammer of an opener for discharging the melt in the furnace to prevent the molten iron from flowing back to the hammer side.

Forming a disk accommodation hole 20 on the front fluid passage of the hammer rod 151; It is received so as to be slidably in the disk receiving hole 20, and forms a closed hole 32 on the hammer rod side while opening toward the opening drill 130 side in the inner longitudinal direction, and on the outer surface of the center and the end of the hammer rod side. Sliding contact projections 34 and 36 having an outer diameter equal to the inner diameter of the disc accommodation hole 20 are continuously formed in the circumferential direction, and the hammer rod side sliding contact projection 36 is formed of a plurality of pieces penetrating in the longitudinal direction. A valve disc (30) having a first fluid passage (37) and having a plurality of second fluid passages (38) formed radially between the sliding contact protrusions (34) and (36) to be connected to the holes (32); and Coil spring 40 to apply an elastic force to the hammer rod side to the valve disk 30; And a valve seat 50 which is screwed to the hammer rod side of the disk receiving hole 20 to block movement of the valve disc 30 and forms a through hole 52 in the center thereof. do.

Description

Melting backflow prevention structure of opening machine

The present invention relates to a perforator for discharging the melt in the furnace, and more particularly to a molten iron backflow prevention structure of the perforator is built in a tapping socket connecting the opening drill and the hammer to prevent the molten iron from flowing back to the hammer side .

In general, a plurality of openings 112 radially formed under the furnace wall 110 so as to discharge the melt is normally kept closed by mud or the like, and when opening the openings 112. Opening is performed by opening the opening machine 120.

In general, the opener 120 is provided with an annular open hole drill 130 having a drill blade 132 at the tip and a fluid supply hole 134 continuously in the longitudinal direction at the center as shown in FIG. , The opening machine 120 is provided on the rear side of the guide frame 140, the guide frame 140 to be forward and backward toward the opening hole 112 while supporting the opening drill 130, the opening drill 130 A tapping socket that connects the forward, reverse hammer 152, 154 and the feeder motor 156, the enemy, reverse hammer 152, 154 and the opening drill 130 to provide a striking force to make the forward and backward movement to ( 160, the support frame 170 is hinged to the rear upper surface of the guide frame 140 to support the guide frame 140 to be rotatable via the wire 172 and the lift motor 174. Is fitted to the hook receiving member 114 formed integrally with the furnace wall 110 during the actual opening work The ring 142 is formed at the distal end of the guide frame 140.

That is, during the opening operation, the hook 142 of the guide frame 140 is fitted to the hook receiving member 114 of the furnace wall 110 so that the position of the tip of the opening 120 is fixed to be suitable for opening. As the drill 130 is moved forward and backward, the opening tool 112 is drilled so that the molten iron is discharged to the outside through the opening tool 112.

In addition, when the opening drill 130 is advanced for the starting line, the nitrogen gas (N ₂ ) and water supplied through the fluid supply line 180 flow through the fluid supply hole 134 formed therein. The opening of the furnace can be more smoothly performed in a state in which the high pressure inside the furnace does not leak to the outside due to the fluid pressure.

By the way, in such a conventional opening machine, when the supply of the fluid supplied through the fluid supply hole 134 is not made smoothly, or the fluid supply is interrupted, the pressure in the furnace is directed to the hammers 152 and 154. It was not possible to block the backflow, and the molten iron flowed back to the hammers 152 and 154, causing a facility accident to destroy it, and thus the opening work could not be made smoothly.

This is a conventional tapping socket 160 structure, as shown in Figure 2 to form a through hole 162 in the longitudinal direction in the center portion, one side of the through hole 162 is drilled through the key 131 as a medium 130 is fitted and fixed, and the other end of the through hole 162 has a simple structure in which the hammer rod 151 is fixed to the thread 164 by screwing by forming a thread 164 on the inner surface thereof. This is due to the fact that the blocking means for the molten iron flowing back through the opening drill 130 is not provided at all.

The present invention was devised to solve such a conventional problem, and when the opening is carried out at a tapping socket which is a hole connection drill and a hammer connection part of an opening machine for opening a hole, a fluid of nitrogen gas and water is supplied to the drill blade side. The purpose of the present invention is to provide a molten metal backflow prevention structure of the open air to ensure that the opening work can be stably performed by allowing the molten iron to flow back after the completion of the opening or when the fluid supply is blocked.

1 is a schematic configuration diagram showing a general opening machine

Figure 2 is a cross-sectional view showing a tapping socket portion of a conventional opening machine

Figure 3 is a cross-sectional view showing a tapping socket portion having a molten iron backflow prevention structure of the open air according to the present invention

4 is a perspective view showing the main part of the present invention

5 is an explanatory view showing that the fluid flow is made by the structure of the present invention

6 is an explanatory view showing that the molten iron backflow is blocked by the structure of the present invention.

Explanation of symbols on the main parts of the drawings

10 ... Tapping Sockets

20 ... disc housing hole

30 ... valve disc

32 ... hole

34,36 ... sliding contact protrusion

37,38 ... fluid passage

40 ... coil spring

50 ... valve seat

52 ... holes

130 ... opening drill

As a technical configuration for achieving the above object, the present invention, the opening drill for drilling out the opening hole of the furnace wall is moved back and forth by the hammer, the fluid supply hole formed in the opening drill hammer rod from the fluid supply line A perforator configured to open a pore opening while supplying a fluid by supplying a fluid through a pipe, the perforator comprising: forming a disc receiving hole on a front fluid passage of the hammer rod; It is received so as to be slidably in the disk receiving hole, and is opened to the opening drill side in the inner longitudinal direction to form a closed hole on the hammer rod side, and has an outer diameter equal to the inner diameter of the disk receiving hole on the outer surface of the center and the end of the hammer rod side. The sliding contact projections are continuously formed in the circumferential direction, the hammer rod side sliding contact projections have a plurality of first fluid passages penetrating in the longitudinal direction, and between the sliding contact projections are radially formed and connected to the holes. A valve disc having a plurality of fluid passages; and a coil spring configured to apply an elastic force to the hammer rod side of the valve disc; And a valve seat screwed to the hammer rod side of the disc accommodation hole to block movement of the valve disc, and having a through hole formed in the center thereof. All.

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

FIG. 3 is a cross-sectional view schematically illustrating a tapping socket 10 of an opening machine having a molten iron backflow prevention structure according to the present invention, and has a through hole 14 providing a flow path of a fluid in a longitudinal direction at a central portion thereof. And, the opening drill 130 is fixed to the one end through the key 131, the other end is formed by the thread 12, the rough configuration of the hammer rod 151 is fixed by screwing is similar to the conventional configuration .

The molten metal backflow prevention structure of the present invention is provided in the through hole 14 between the opening drill 130 and the hammer rod 151, and this position is not necessarily limited to this part, and the rear end portion of the opening drill 130 is provided. It may be provided on the inner side or the inner end of the hammer rod 151.

A disk receiving hole 20 is formed between the opening drill 130 and the hammer rod 151 of the tapping socket 10 to receive the valve disk 30 and to slide in the longitudinal direction.

The valve disc 30 is formed in a substantially hollow cylindrical shape having a hole 32 in the open drill 130 side in the longitudinal direction and a closed hole 32 in the hammer rod 151 side, and the outer diameter of the valve disc 30 is It is formed smaller than the inner diameter of the disk receiving hole 20, the outer surface of the central portion of the valve disk 30 and the end of the hammer rod 151 protrudes radially and continues in the circumferential direction, the outer diameter of the disk receiving hole ( The sliding contact protrusions 34 and 36 formed to be equal to the inner diameter of 20 may be provided to maintain balance when the valve disc 30 comes into contact with the disk receiving hole 20 and is slipped.

In addition, the hammer rod 151 side sliding contact projection 36 forms a first fluid passage 37 in which the front and rear side spaces are connected to each other to allow the flow of fluid through the portion, and the sliding contact Between the projections 36 is provided with a second fluid passage 38 formed radially and provided in plurality in the circumferential direction. Therefore, when the valve disc 30 is accommodated in the disk receiving hole 20, the flow of fluid may be formed through the first fluid passage 37 → the second fluid passage 38 → the hole 32.

And, the valve disk 30 is mounted so that the elastic spring is always provided to the hammer rod 151 side by the coil spring 40, one method for this is the valve disk 40 in a compressed state ( 30 is provided at the end of the opening drill 130 side, so that one end of the coil spring 40 is supported by the disk receiving hole 20 and the other end is supported by the sliding contact projection 34. Of course, in addition to this method, a variety of methods for applying an elastic force to the hammer rod 151 side to the valve disk 30 can be made, it is natural that all these modifications belong to the scope of the present invention.

In addition, the valve seat 30 is provided with a valve seat 50 which prevents the valve disc 30 from being separated to the hammer rod 151 side. The valve seat 50 is provided at the end of the hammer rod 151 side of the disk receiving hole 20. Screwed to limit the degree of movement of the valve disc 30 to the hammer rod 151 side, the valve seat 50 forms a longitudinally through hole 62 in the central portion, preferably the hole 52 is formed in a hexagon to facilitate disassembly thereof. At this time, the size of the hole 52 is formed in the sliding contact projections 36 of the valve disk 30 when the valve disk 30 is in close contact with the valve seat 50 by the elastic repulsive force of the coil spring (40) 1 The fluid passage 37 is set to be completely blocked.

Therefore, when the valve disc 30 and the valve seat 50 are kept in close contact with each other by the elastic repulsive force of the coil spring 40, the flow of fluid between the opening drill 130 and the hammer rod 151 When the valve disc 30 is kept off from the valve seat 50 by overcoming the elastic repulsive force of the coil spring 40, the hole 52 of the valve seat 50 → the first fluid passage 37 → The second fluid passage 38 may be a flow passage of the fluid passing through the hole 32.

Of course, in order to maintain the position after the valve seat 50 is screwed to the tapping socket 10, it is preferable to install a snap ring 54 or the like.

The operation of the present invention with the above configuration will be described.

When the opening work is performed in a state in which the opening drill 130 and the hammer rod 151 are connected to each other with the tapping socket 10 having the structure of the present invention, nitrogen gas and water as shown in FIGS. When the opening work is performed while supplying the mixed fluid (see FIG. 5), and the molten iron is flowed back due to the lack of fluid supply (FIG. 6), the position of the valve disc 30 is changed while the fluid is changed. Supply or molten iron countercurrent action is performed.

First, when a mixed fluid of nitrogen gas and water is supplied from the hammer rod 151 side to form a fluid flow toward the opening drill 130, the mixed fluid firstly opens the valve through the hole 52 of the valve seat 50. The closed end of the disk 30 is reached, so that the pressure of the mixed fluid pushes the closed end of the valve disk 30 to move the valve disk 30 toward the opening drill 130. Of course, in order to achieve such an operation, the force due to the pressure applied to the closed end of the valve disc 30 by the mixed fluid must be greater than the elastic repulsive force applied to the valve disc 30 by the coil spring 40. In this case, it is sufficient to set a factor such as the elastic modulus of the coil spring 40 appropriately.

Accordingly, the valve disc 30 is separated from the valve seat 50, which causes the hole 52 → the first fluid passage 37 → the second fluid passage 38 → the hole 32 of the valve seat 50 to be separated. By forming the flow passage (P1) of the fluid passing through the fluid can be supplied to the opening drill 130.

Next, when the molten iron flows back toward the tapping socket 10 due to the blocking of the fluid flow or the like, no further force due to the fluid pressure acts on the closed end side of the valve disc 30, and thus the valve disc 30 ) Is moved to the valve seat 50 side by close contact with the restoring force of the coil spring 40, which blocks the flow passage of the fluid, thereby blocking the flow of molten iron back to the hammer rod 151 side (P2).

Therefore, the hammer etc. can be prevented from being damaged effectively by the molten iron which flows back.

According to the molten iron backflow prevention structure of the open air according to the present invention as described above, when a mixed fluid of nitrogen gas and water is supplied to the front side of the hammer, a passage for them is provided, and when the mixed fluid is not supplied By preventing such a flow of molten iron by blocking the fluid passage by the elastic restoring force of the coil spring has an excellent practical effect that can prevent the damage of the hammer side by the reverse flow of the molten iron.

Claims (1)

The opening drill 130 for drilling out the opening of the furnace wall moves forward and backward by the hammer, and passes through the hammer rod from the fluid supply line 180 to the fluid supply hole 134 formed in the opening drill 130. In the opening machine to open the opening 112 while supplying the fluid by supplying the fluid, Forming a disc accommodation hole (20) on the front fluid passage of the hammer rod (151); It is received so as to be slidably in the disk receiving hole 20, and forms a closed hole 32 on the hammer rod side while opening toward the opening drill 130 side in the inner longitudinal direction, and on the outer surface of the center and the end of the hammer rod side. Sliding contact projections 34 and 36 having an outer diameter equal to the inner diameter of the disc accommodation hole 20 are continuously formed in the circumferential direction, and the hammer rod side sliding contact projection 36 is formed of a plurality of pieces penetrating in the longitudinal direction. A valve disc (30) having a first fluid passage (37) and having a plurality of second fluid passages (38) formed radially between the sliding contact protrusions (34) and (36) to be connected to the holes (32); and , A coil spring (40) adapted to apply an elastic force to the hammer rod side to the valve disc (30); And, And a valve seat (50) which is screwed to the hammer rod side of the disc receiving hole (20) to block the movement of the valve disc (30) and forms a through hole (52) at the center thereof. Cooling backflow prevention structure of air.