JP4186651B2 - Mud filling equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mud filling apparatus used to close a residue port provided at the output of a blast furnace.
[0002]
[Prior art]
For example, as shown in FIG. 7, the hot metal 3 discharged from the hot metal outlet 2 of the blast furnace 1 passes through the hot metal 4 to the skinmer damper portion 5 where the hot metal 6 and the hot metal 7 are caused by the difference in specific gravity. And separated. The separated hot metal 6 is accommodated in the topped car 10 from the hot metal 8 through the tilting iron 9, while the hot metal 7 is accommodated in the hot metal pit (not shown) through the hot metal (not shown).
[0003]
Normally, the hot metal is stored in the molten iron, but if necessary, an operation of extracting the stored hot metal (commonly referred to as a residue removing operation) is performed. The residue removal operation is to open a molten metal escape passage hole called a residue opening 11 provided on the wall of the skinmer damper portion 5. After the molten iron in the outlet 4 is discharged to the outside through the opened residue outlet, the residue outlet is filled with an irregular refractory material called mud (common name) : Mud filling operation).
[0004]
In the residue removal work, a method is usually employed in which the residue outlet is dug and penetrated from the outlet side of the closed residue outlet (the inside of the residue receiving the discharged residue) using an opening machine. (See, for example, Patent Document 1, Patent Document 2, and Patent Document 3). On the other hand, in the mud filling operation, a method is generally employed in which the worker stamps the mud from the inside of the residue with a rammer (a stick) into the residue opening.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 50-47903 [Patent Document 2]
JP 63-83207 A [Patent Document 3]
Japanese Utility Model Publication No. 3-89139 [0006]
[Problems to be solved by the invention]
However, the normal mud filling operation is a hot operation, and the work load is very heavy, which is a representative of the 3K operation. In order to reduce this work load, a mud filling apparatus corresponding to a comparative example for the present invention as shown in FIG. 8 was constructed. The apparatus of this comparative example is arranged in front of the residue port 11 in the residue 20 by suspending a cylindrical nozzle 14 filled with a mud 12 at the front end and incorporating a piston 13 at the rear thereof by a cast-in crane 15. A mud gun 18 comprising a rod 16 and a drifter 17 that vibrates the rod 16 in the front-rear direction (rod axial direction) is disposed behind the nozzle 14 so as to be able to advance and retreat. The mud 12 is stamped in the remnant port 11 by advancing the drifter 17 while vibrating back and forth.
[0007]
However, the apparatus of this comparative example has the following problems. (1) Since the mud gun is large, the work load of the placement work is heavy, such as requiring sling work to suspend the mud gun. (2) Mud leaks due to insufficient pressure bonding of the nozzle or misalignment, and it may be necessary to manually fill the mud, which does not eliminate 3K work. (3) In that case, the mud filling pressure is insufficient, and the residue port tends to become red hot or difficult to open due to kneading. When the residue outlet becomes red hot, first aid such as water cooling or mud coating is necessary. When opening is difficult due to kneading, oxygen is opened from the inlet side of the residue outlet (oxygen is blown into the residue outlet with a lance and mixed refractory) To melt and perforate).
[0008]
An object of the present invention is to provide a mud filling apparatus that can solve these problems, improve the safety and workability of mud filling work, and can secure sufficient mud filling pressure without causing mud leakage. .
[0009]
[Means for Solving the Problems]
The present inventors have intensively studied to achieve the above-mentioned object, and as a result, by making the hole punching machine used for the residue removal work usable for the mud filling work, the mud filling work apparatus The placement work load can be reduced to the same extent as the residue removal work, and when the hole punching machine is used for mud filling work, a piston rod (rod whose tip part forms the piston head) is used instead of the drilling rod. This is also used as a dual-use nozzle, and a nozzle (mud filling cylinder) that does not contain a piston and is provided with a removable stopper is attached to the tip of the hole opening machine, and a hacker of the hole opening machine is provided at the outlet of the residual opening. After setting on the hacker receiver, first press the stopper you put on with the piston head to push the mud filling cylinder against the outlet of the residual port, then remove the stopper and put the mud inside the cylinder into the residual port with the piston head. By impress it a structure possible to obtain the knowledge that it is possible to secure a sufficient mud filling pressure without causing mud leakage and without the present invention comprising the following summary and construction.
(1) A mud filling device used for closing a residue port, the guide channel having a hacker to be engaged with a hacker receiver provided at the exit of the residue port, and a suspension movably suspended in the guide channel A drifter, a piston rod, and a mud filling cylinder that are coaxially arranged in order from the rear end side of the guide channel, and a movement urging unit that is supported by the guide channel and urges the movement of the drifter, the drifter being the piston gripping the rear end portion of the rod is rotated to a vibration or coaxially around the axial direction, said the mud filling tube is inserted the piston rod further, a piston head of the piston rod and the mud filling tube, wherein A mud filling apparatus having a stopper mechanism that interferes only when the mud filling cylinder is pressed against the residue port .
(2) The mud filling device according to (1), wherein the stopper mechanism includes a latch-type stopper provided in the mud filling cylinder.
(3) The stopper mechanism includes a groove provided in the mud filling cylinder, and a stopper provided on an outer periphery of the piston rod and fitted into the groove and interferes with a cylindrical body portion other than the groove. The mud filling device according to (1), characterized in that
(4) In any one of (1) to (3), the mud filling cylinder or the piston rod is suspended from the guide channel via a connecting means using a presser key that can be freely opened and closed. The mud filling device as described.
(5) The mud filling device according to any one of (1) to (4), wherein an inner diameter of a tip of the mud filling cylinder is larger than an outlet diameter of the residue port.
(6) The mud filling device according to any one of (1) to (5), wherein the guide channel is connected to a frame body having a fork receiver that engages with a fork of a forklift.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic diagram showing an example of the present invention. As shown in this example, the mud filling device according to the present invention has a guide channel 21 having a hacker 29 engaged with a hacker receiver 28 provided at the outlet of the residue port 11 at the tip, and is movable to the guide channel 21. Drifter 17, piston rod 22 and mud filling cylinder 24, which are suspended and arranged coaxially in the order from the rear end side of guide channel 21 and piston rod 22 and mud filling cylinder 24, are supported by guide channel 21 and are provided with movement of drifter 17. And moving urging means 30 for energizing.
[0011]
The drifter 17 grips the rear end portion of the piston rod 22 and vibrates in the axial direction. The moving urging means 30 is configured such that a chain 30b connected to the drifter 17 is wound around a sprocket 30c and travels in the longitudinal direction of the chain by an air motor 30a. As the guide channel 21, the hacker 29, the drifter 17, and the moving urging means 30, those provided in an opening machine that is usually used for removing residues can be used as they are. Although not particularly limited, the guide channel 21 is provided with a hanger 31 and a hanger bar (hanger bar) 32 connected to the hanger 31 so as to be convenient for suspending and conveying the entire apparatus.
[0012]
The piston rod 22 is a rod whose tip portion forms a piston head 23. The mud filling cylinder 24 is filled with the mud 12, and the tip of the mud filling cylinder 24 is pressure-bonded to the wall around the outlet of the residue port 11 to press-fit and fill the mud into the residue port 11. It is a cylinder to go. In order to press the cylinder against the wall, in the present invention, a stopper mechanism that temporarily interferes with the mud filling cylinder 24 and the piston head 23 (that is, only when the mud filling cylinder is pressed against the remnant port). It was supposed to have.
[0013]
FIG. 2 shows an example of the stopper mechanism for temporarily causing interference. The stopper mechanism for temporarily causing interference shown in FIG. A latch 25a is rotatably supported by a shaft 25b provided on the outer surface of the bottom of the mud filling cylinder 24, and an opening 25c for allowing the free end of the latch 25a to enter and exit from the cylinder is provided in the cylinder body. . The stopper 25 waits for the piston head 23 to be inserted in a state where the tip of the latch 25a is in the cylinder (hanged state). In order to keep the stopper hooked during this waiting time, an appropriate temporary stopper that can come off and fall when the piston head 23 hits the latch 25a may be used. After the piston head 23 hits the latch 25a, it exerts a pressing force on the mud filling cylinder 24 via the latch 25a, so that the tip of the mud filling cylinder 24 is sufficiently crimped to the collar wall around the outlet of the residue port 11. Next, when the drifter 17 is slightly retracted, the latch 25c moves away from the piston head 23 and rotates downward under its own weight to come out of the cylinder, so that the stopper 25 is released. Since the piston head 23 is supported by the piston receiver 33, there is no need for positioning or the like when the piston head 23 moves backward. Next, when the drifter 17 is activated and moved forward, the piston head 23 press-fits and fills the mud 12 inserted in the mud filling cylinder 24 into the residue port 11 without interfering with the latch 25a. That is, the stopper 25 temporarily interferes with the piston head 23. Due to this interference, the mud filling cylinder 24 is pushed and the tip of the mud filling cylinder 24 is pressed against the wall.
[0014]
FIG. 3 is another example of a stopper mechanism that temporarily interferes. FIG. 3A is a side view of the mud filling cylinder 24, and FIG. 3B is a side view of the mud filling cylinder 24 from the piston head side. A front view is shown. In FIG. 3 (a), the structure having the piston receiver 33 in the mud filling cylinder 24 is not changed, but in the cylinder of the mud filling cylinder 24, as shown in FIG. 3 (b), a groove fitted to the piston head 23 side. 52a is formed. 4 (a) and 4 (b) show a piston head 23 conforming to FIG. 3, as shown in the front and side views of the piston head 23 in FIGS. 4 (a) and 4 (b). On the outer periphery of the piston head 23, there is attached a stopper 52b that fits into the groove 52a and interferes with the part other than the part where the cylindrical body is formed with the groove 52a.
[0015]
In the configuration of FIG. 3, the piston head 23 is first placed on the piston receiver 33, and then the piston head 23 is advanced by the drifter 17. The cylinder body of the mud filling cylinder 24 and the stopper 52b interfere with each other, and the mud filling cylinder 24 is advanced to the wall side (left side in the figure). If the piston head 23 is rotated at the stage where the tip of the mud filling cylinder 24 is pressed against the wall, the stopper 52b provided on the piston head 23 is fitted into the groove 52a provided on the cylinder, and then the drifter 17 is advanced. The piston head 23 moves forward in the mud filling cylinder 24, and the mud 12 charged in the mud filling cylinder 24 is press-fitted and filled into the residue port 11. Since the tip 23a of the piston head 23 is inserted into the mud filling cylinder 24 up to a position where it interferes with the stopper 52b, the forward movement, the rotation of the piston head 23 and the press-fitting / filling operation of the mud 12 can be performed. Compared with the mud filling apparatus constituted by the stopper 25, the operability is improved.
[0016]
The above-described piston rod 22 and mud filling cylinder 24 are not included in the opening machine. Therefore, in the hole opening machine, the rear end portion of the piston rod 22 is held by the drifter 17 instead of the drilling rod, and the mud filling cylinder 24 loaded with the mud 12 is connected to the guide channel 21 via the connecting means 26. By suspending it at the tip, the opening machine can be converted to the mud filling device of the present invention. By making the connecting means 26 slidable (slidable) along the guide channel 21, the mud filling cylinder 24 can be suspended so as to be movable. The connecting means 26 is not limited to being slidable but may be capable of rolling (rolling), but the former (slidable) is preferred from the viewpoint of structural simplicity.
[0017]
In the mud filling cylinder 24, the piston head 23 is inserted from the opening at the rear end. In order to facilitate the insertion, a mud filling cylinder 24 is preferably provided with a bowl-shaped piston head receiver 33 at the rear end. Further, in the cantilever state in which the piston rod 22 is only via the drifter 17, the piston head 23 may fluctuate and cause troubles during transportation or arrangement. It is preferable to connect an appropriate length portion (for example, near the center of gravity) to the guide channel 21. The connecting means 27 is preferably slidable like the connecting means 26 so that the movement of the piston rod 22 is not hindered.
[0018]
According to the present invention, since the drifter, the piston rod and the mud filling cylinder are suspended from the same guide channel and arranged coaxially, the apparatus is integrated, and the shaft center blur at the time of stamping is reduced. Since the apparatus is integrated, the safety of the mud filling work and the workability are improved, for example, the sling work that is required twice in the comparative example is only required in the present invention. And since the axial blurring at the time of stamp construction is reduced, mud leakage hardly occurs and the mud filling pressure is improved.
[0019]
Further, according to the present invention, a stopper mechanism that temporarily interferes the mud filling cylinder and the piston head of the piston rod, for example, a stopper mechanism comprising a latch-type stopper provided in the mud filling cylinder, or, for example, Since there is provided a stopper mechanism comprising a groove provided in the mud filling cylinder and a stopper provided in the outer periphery of the piston rod and fitted in the groove and interfering with a cylindrical body portion other than the groove, Adequate crimping can be ensured, coupled with the reduction in shaft center blur, mud leakage can be more reliably prevented, and the mud filling pressure is further improved.
[0020]
Further, in the present invention, from the viewpoint of improving the efficiency of replacing the mud filling cylinder 24, the connecting means 26 has a structure that can be easily attached and detached, for example, a presser key 41 that can be opened and closed as shown in FIG. Those are preferred. The mud filling cylinder 24 is provided with a handle 40 for handling. According to this, the engagement rod opposite to the open presser key 41 is hung on the guide channel 21 and the handle 40 is pulled up (FIG. 5A), and the upper surface of the connecting means 26 is pressed against the bottom surface of the guide channel 21. The presser key 41 is turned to close it, and is fastened with a bolt or the like to form an engagement rod which is the opposite of the engagement rod (FIGS. 5 (b) and 5 (c)). The mud filling cylinder 24 can be slidably suspended on the channel guide 21. In the case where the connecting means 27 is also used for the piston rod 22, the connecting means 27 may be configured using a presser key that can be freely opened and closed, like the connecting means 26 of the mud filling cylinder 24.
[0021]
Further, in the present invention, it is preferable to use a mud-filled cylinder in which the inner diameter at the tip of the cylinder is larger than the outlet diameter of the residue port from the viewpoint of further improving the pressure-bonding property of the mud-filled cylinder to the wall around the residue outlet. . More preferably, the inner diameter D1 of the mud filling cylinder is at least 1.5 times the outlet diameter D0 of the residue port. However, even if D1 is made too large, not only the effect of improving the crimping property is saturated but also the apparatus is unnecessarily increased in size, so that D1 is preferably 2.0 times or less of D0.
[0022]
In addition, it is preferable that the device is lifted and lowered by a forklift rather than a crane in order to more easily and accurately align the shaft center between the remnant port and the mud filling cylinder, etc. during the placement work of the device. In the invention, for example, as shown in FIG. 6, it is preferable that the guide channel 21 is connected to a frame body 45 having a fork receiver 46 that engages a fork 51 of a forklift 50.
[0023]
【Example】
Next, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to this embodiment.
[Example 1]
In Example 1, in the blast furnace where the mud filling work was conventionally performed manually, the mud filling work was performed using the apparatus of the present invention configured in the form shown in FIGS. 1, 2, 5, and 6. . It should be noted that D1 = 200 mm with respect to D0 = 100 mm (total length of the hole at the residue port = 1100 mm). The mud filling procedure is as follows.
(1) First, the hole punch used in the previous stage residue removal work is lifted from the front of the exit of the residue port 11 with the forklift 50, the drill rod is removed from the drifter 17, and then the mud filling cylinder 24 is connected to the connecting means 26. Are attached to the guide channel 21, and then the mud 12 is packed and the stopper 25 is applied, and the piston rod 22 is attached to the drifter 17 with its rear end and the vicinity of the center of gravity in the rod length direction is guided by the connecting means 27. Attach to channel 21. The hole puncher was now converted to a mud filling device.
(2) Next, the mud filling device is lowered with the forklift 50 in front of the outlet 11 and the hacker 29 is put on the hacker receiver 28.
(3) Next, the drifter 17 is moved forward, the piston head 23 is brought into contact with the latch 25a, and the tip of the mud filling cylinder 24 is pressed against the wall around the outlet of the residue port 11. With this, a sufficient crimping force can be obtained.
(4) Next, the drifter 17 is slightly retracted (to a position outside the latch rotation locus range). As a result, the latch 25a rotates downward under its own weight, comes out of the cylinder, and the stopper 25 is removed.
(5) Next, when the drifter 17 is activated and moved forward, the mud 12 is press-fitted and filled into the residue port 11 by the piston head 23 that moves forward and backward while vibrating. That is, stamp construction is executed.
(6) After completing the above stamping, lift the mud filling device with the forklift 50 from the front of the outlet of the residue. It should be noted that the hacker receiver 28 and the mud filling cylinder 24 have different in-plane phases, so that they do not interfere with each other during the lifting.
[0024]
As a result, the safety and workability of the mud filling work are improved, and the net work required time from the start of removing the residue per one time to the end of the mud filling (excluding the waiting time while leaving the residue) is about What took 70 minutes was drastically reduced to about 30 minutes. Also, since there was no mud leakage and sufficient filling pressure was ensured, the residual redness that had occurred about 3 to 5 times a month in the past did not occur at all after the implementation of this example, so it was difficult to open holes due to kneading The need for oxygen opening was eliminated.
[Example 2]
In the second embodiment, the mud filling operation is performed using the apparatus of the present invention in which the stopper mechanism in the first embodiment is replaced with the latch type shown in FIG. 2 and the stopper is fitted in the groove shown in FIGS. This is an example of doing so.
[0025]
The description will focus on the parts that are different from the working procedure of the first embodiment.
(1) After removing the perforated rod from the drifter 17, the mud filling cylinder 24 is attached to the guide channel 21 by the connecting means 26, and then the mud 12 is packed. Further, the rear end portion of the piston rod 22 is attached to the drifter 17, and the piston rod 22 is supported by the guide channel 21 by the connecting means 27. At this time, the piston head 23 of the piston rod 22 is placed at the position of the piston receiver 33 of the mud filling cylinder 24, or the tip 23a of the piston head 23 is further inserted into the rear end of the mud filling cylinder 24. deep. The hole puncher was now converted to a mud filling device.
(2) Next, move and hack hacker 29 on hacker tray 28.
(3) The drifter 17 is moved forward and pressed against the wall of the mud filling cylinder 24 so that the tip of the mud filling cylinder 24 surrounds the periphery of the outlet 11 of the residue. The drift 17 is operated to rotate the piston rod 22, and the stopper 52b of the piston head 23 is fitted into the groove 53a of the mud filling cylinder 24. In addition, by rotating the piston head 23 in a state where the tip of the mud filling cylinder 24 is crimped to the flange wall, the fitting is performed at the coincidence point between the groove 52a and the stopper 52b. This fitting can be determined by stopping the rotation of the piston head 23 (rotation of the piston rod 22).
(4) Next, the piston 12 is moved forward by striking and moving forward with the drifter 17, so that the mud 12 in the mud filling cylinder 24 is press-fitted and filled into the residue port 11.
[0026]
The subsequent steps are the same as those in the first embodiment. However, in the second embodiment, the combination of the mud filling cylinder 24 and the piston head 23 is easier than in the first embodiment, and the operation is easy and the workability is good.
[0027]
【The invention's effect】
According to the present invention, it is possible to improve the safety and workability of the mud filling work, and it is possible to secure a sufficient mud filling pressure without causing mud leakage and to prevent residual redness. There is an effect.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an example of an apparatus configuration of the present invention.
FIG. 2 is a schematic diagram showing an example of a stopper mechanism used in the present invention.
FIG. 3 is a schematic view of a mud filling cylinder side showing another example of a stopper mechanism used in the present invention.
FIG. 4 is a schematic view on the piston head side showing another example of a stopper mechanism used in the present invention.
FIG. 5 is a schematic view showing a preferred example of connecting means for a mud filling cylinder used in the present invention.
FIG. 6 is a schematic view showing an embodiment of the present invention that can be supported by a forklift.
FIG. 7 is a schematic view showing an example of a hot metal system for collecting hot metal from hot metal.
FIG. 8 is a schematic diagram showing a device configuration of a comparative example.
[Explanation of symbols]
1 Blast Furnace 2 Outlet 3 Hot Metal 4 Outlet 5 Skinmer Damper
5A Skinmer 6 Hot metal 7 Hot metal 8 Hot metal 9
10 Toped car
11 Remnants
12 Mad
13 Piston
14 nozzles
15 Cast floor crane
16 rod
17 Drifter
18 Mad Gun
20 Remnants
21 Guide channel
22 Piston rod
23 Piston head
23a Piston head tip
24 mud filling cylinder
25 Stopper
25a hasp
25b axis
25c opening
26 Connection means
27 Connection means
28 Hackers
29 Hacker
30 Movement urging means
30a Air motor
30b chain
30c sprocket
31 Hanger
32 Hanging bar (hanger bar)
33 Piston receptacle
40 Handle
41 Presser key
45 frame
46 Fork receptacle
50 forklift
51 forks
52a groove
52b Stopper

Claims (6)

A mud filling device used for closing a residue port, the guide channel having a hacker to be engaged with a hacker receiver provided at the exit of the residue port, and a guide channel that is movably suspended in the guide channel A drifter, a piston rod, and a mud filling cylinder that are coaxially arranged in order from the rear end side, and a movement urging unit that is supported by the guide channel and urges the movement of the drifter. The drifter is disposed behind the piston rod. The end portion is gripped and vibrated in the axial direction or rotated coaxially, the piston rod is inserted into the mud filling cylinder, and the mud filling cylinder and the piston head of the piston rod are connected to the mud filling cylinder. A mud filling device having a stopper mechanism that causes interference only when pressed against the remnant port .   The mud filling device according to claim 1, wherein the stopper mechanism includes a latch-type stopper provided in the mud filling cylinder.   The stopper mechanism includes a groove provided in the mud filling cylinder, and a stopper provided in an outer periphery of the piston rod and fitted in the groove to interfere with a cylindrical body portion other than the groove. The mud filling device according to claim 1.   The mud filling apparatus according to any one of claims 1 to 3, wherein the mud filling cylinder or the piston rod is suspended from the guide channel via a connecting means using a pressable key that can be freely opened and closed. .   The mud filling device according to any one of claims 1 to 4, wherein an inner diameter of a tip of the mud filling cylinder is larger than an outlet diameter of the residue port.   The mud filling apparatus according to any one of claims 1 to 5, wherein the guide channel is connected to a frame body having a fork receiver that engages with a fork of a forklift.

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