KR100782685B1 - A device for confirming the depth of melting iron outlet using the rotation of mud gun - Google Patents

Abstract

The present invention relates to an apparatus for checking the depth of a tap opening using the turning of a mud gun.

The present invention has a contact roller 11 which is rotated in surface contact with its outer surface during the pivoting operation of the pivot shaft portion 4b, and is orthogonal to the circumference of the light transmitting disk 13 which is rotated together with the contact roller 11. A detection unit (10) equipped with light-emitting and light-receiving sensors (14a) and (14b) arranged to detect the amount of rotation of the light transmitting disk (13); And a moving holder 32 which elastically supports the roller holder 31 on which the contact roller 11 is rotatably supported on the pivot shaft 4b side, and moves the moving holder 32 to the pivot shaft portion 4b. An operation unit 30 having a cylinder member 33 for horizontal reciprocating to control contact between the contact roller 11 and the pivot shaft portion 4b; a pulse signal generated by the sensor members 14a and 14b Including a control unit 50 to count and convert the counted pulse amount to a distance,

It is possible to obtain the effect of continuously checking the depth of the exit port by converting the turning distance from the stop position of the exit port to the point where the mud gun is compressed to the exit port by using the instrumentation signal.

Mud gun, exit port, contact roller, light emitting disk, light receiving, light emitting sensor, pulse counter

Description

A DEVICE FOR CONFIRMING THE DEPTH OF MELTING IRON OUTLET USING THE ROTATION OF MUD GUN}

1 is a schematic view showing the exit of a typical blast furnace,

Figure 2 is an operating state showing the turning operation of a general mud gun,

Figure 3 is a perspective view showing the tapping depth check device using the mud gun swing according to the present invention,

Figure 4 is a perspective view showing a tap opening depth checking device using a mud gun swing according to the present invention,

5 is a cross-sectional view showing a tapping hole depth checking device using a mud gun swing according to the present invention;

6 (a) and (b) are graphs showing a circuit diagram and a characteristic diagram in which the magnitude of voltage is changed in accordance with light transmitted through and receiving a light receiving sensor;

Figure 7 is a flow chart of the operation of the exit depth check device using the mud gun turning in accordance with the present invention.

 Explanation of symbols on the main parts of the drawings

11 .... Contact Roller 12 .... Roll Shaft

13 .... Light Emitting Disc 14a, 14b ...

15 .... Sensor Mount 16 .... Mount                 

31 .... Roller Holder 32 .... Moving Holder

33 .... Cylinder member 34 .... Spring member

35 .... Base Beam 36 .... Motherboard

51 .... pulse counter 52 .... transducer

The present invention relates to a device for checking the depth of the outlet using the turning of the mud gun, and more specifically, using the instrumentation signal for the rotation distance from the stop to the point where the mud gun is squeezed to the outlet at the time of closure and operation This invention relates to a depth check device using a mudgun swing that can continuously measure and measure the depth of the exit port in terms of length.

In general, a smelter is a facility for manufacturing molten metal (hereinafter, referred to as molten steel) by sintering ore, coke, and auxiliary raw materials and charging hot melt with high temperature hot air.

As shown in FIGS. 1 and 2, the hot molten steel generated in such a facility is discharged to the large bathway 6 through the tap opening 9 by the pressure in the furnace, and the tap opening 9 is formed at the second half of the molten steel tap. ) Is closed by turning the fuselage 5a with the nozzle tip 5b to which the mud material is injected at the tip and the pivot shaft portion 4b as the center of rotation, and turning the fuselage 5a toward the outlet 9 side. It is made by using a mud gun 5 made of an arm 4a to be operated. The fuselage 5a in position A is pivotally operated as an arm 4a so that the nozzle tip 5b comes into close contact with the starting port 11. Then, a mud gun filled in the inside of the fuselage 5a is injected and supplied to the furnace while the mud material is pressed into the exit port.

In particular, as shown in Fig. 2, the operation of the mud gun 5 at the time of closing the exit port 9 is based on the rotational axis 4b of the arm from the position A shown by the dotted line to the position B shown by the solid line. (4a) turns in a circular arc at a constant radius of rotation, and the normal starting port closure depends on the difference in the length of the turning amount.

Conventionally, the method of checking the depth of the tap hole (H) is a repair of the tap water (6) or the repair of the tap opening (9), the cold water (6) is cooled cold, and the operator is safe from gas and high heat And the measurement method is fixed to a straight rod (not shown) at the left and right ends of the exit opening bar (7) surrounding the outside of the refractory around the exit opening (6) in the direction of the exit opening (9). The length was measured at right angles of and the reference depth (H) was controlled to 450mm ± 50.

In addition, when an emergency occurs during the normal operation, the large hot water bath 6 is heated by a high-temperature melt, and in the state where a large amount of blast furnace gas is generated at the outlet 9, the lower part of the tap water in the large hot water bath 6; The worker entered the wall 9a side and measured by hand.

However, the conventional method for measuring the starting point 9 reference point has the following problems.

First, the exit opening bar (7) is located in close proximity to the high-temperature melt is severely deformed, the scattering melt generated in the surrounding opening (9) and the large bath (6) is solidified and fixed, it is difficult to accurately measure The operation of checking the depth of the outlet opening 9 during operation is very high in the risk of burns due to the surrounding high-temperature melt, and the blast furnace gas leaking around the outlet opening 9 finely by the pressure in the furnace is scattered to allow the worker to approach. it's difficult.

Second, when the state where the nozzle tip 5b of the mud gun 5 is in close contact with the outlet port joint surface 8 due to the abnormality of the equipment related to the above-described operating conditions or the unsuitable peripheral conditions, Mud ashes filled into the furnace through the piers 9 leaked to the outside, causing frequent mud ash accidents.

Third, when the repair work on the outlet connection surface 8, which is poor due to the discharge of the mud material, the excavation bit used to attach to the opening machine (not shown) is used to excavate the outlet connection surface 8 too deep. On the contrary, it did not know the depth of the exit port, and the thickness of the exit junction surface 8 repair operation repeated several times was gradually generated in the direction of the large bath (6), and then popped out.

Fourth, the influence of the proper depth of the exit opening 9 has a great influence on the mud gun 5 to operate by turning the angle. Although the angle from the position A to the point where the mud gun 5 is turned to the point where the mud gun 5 is stopped and is squeezed to the outlet junction surface 8 is set at 127 °, the depth of the outlet 9 is changed. If the width is too great, an abnormality occurs in the contact state between the nozzle tip 5b of the mud gun 5 and the outlet joint surface 8, and the performance of the equipment is not properly exhibited, so that the high-temperature melt mud gun 5 There was a problem that the nozzle tip (5b) of the molten or the vicious cycle of work in which the filling mud material flows out.

 Therefore, the present invention has been proposed in order to solve the conventional problems as described above, the object of which is to accurately measure the amount of swing movement of the mud gun is a swing operation, it is possible to accurately and precisely measure the depth of the exit port, Not only there is no error in the position change, but it is to provide a device for checking the depth of the exit using mud gun turning that can safely perform the measurement work.

As a technical configuration for achieving the above object, the present invention,

In the apparatus for confirming the depth of the exit port in which the mud material is filled using a mud gun consisting of a body having a nozzle tip and an arm for pivoting the body around the pivot axis,

Rotating amount of the light transmitting disk, having a contact roller which is rotated in surface contact with the outer surface of the pivoting shaft, and is disposed orthogonally to the circumference of the light transmitting disk which is rotated together with the contact roller. Detecting unit for detecting;

A moving holder for resiliently supporting the roller holder on which the contact roller is rotatably supported on the pivot shaft side, and a cylinder member for horizontally moving the moving holder to the pivot shaft side to provide contact between the contact roller and the pivot shaft portion. Intermittent operation unit;

And a control unit for counting the pulse signal generated by the sensor member and converting and displaying the counted pulse amount into a distance.                     

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

Figure 3 is a perspective view showing the exit depth check device using a mud gun swing according to the present invention, Figure 4 is a perspective view showing the exit depth check device using a mud gun swing according to the present invention, Figure 5 Fig. 1 is a cross-sectional view showing a tap opening depth checking device using a mud gun swing according to the present invention.

3 to 5, the apparatus 1 of the present invention operates using the turning amount of the mud gun 5, which is swinging to seal the exit opening 9 opened as the mud material after the starting operation. In the vicinity of the pivot shaft portion 4b of the mud gun 5 so that the depth of the tap opening 9 can be checked and measured, the apparatus 1 includes a detector 10, an operation unit 30, and a control unit. And 50.

Here, the mud gun 5 which is pivotally operated to seal the outlet 9 as a mud material is pivotally assembled to the body 5a having the nozzle tip 5b and to the pivot shaft 4b as in the related art. It consists of an arm 4a.

That is, the detection unit 10 is mounted on the contact roller 11 and the roll shaft 12 of the contact roller 11 in contact with the outer surface and rotated in contact with the outer surface during the swing operation of the pivot shaft portion 4b. The light transmitting disk 13 which is rotated in the same direction, and the light emitting disks disposed above and below, the light receiving sensors 14a, 14b, and the like, and rotates simultaneously with the turning operation of the pivot shaft 4b. To detect the amount of rotation.

The contact roller 11 is provided with a ring-shaped banding louver (11b) of the same material as the guide surface (11a) is a heat-resistant rubber material mounted on the outer surface of the pivot shaft portion (4b), the bending louver (11b) It is mounted integrally with the uneven roller band 11c which is integrally mounted on the outer surface of the roll.

In addition, it is preferable that a plurality of protrusions 11d are formed on the outer surface of the bending louver 11b in surface contact with the guide surface 11a so as to improve the surface contact force to prevent slippage.

In addition, the roll shaft 12 of the contact roller 11 is rotatably assembled to the bearing members (31a) (31b) mounted to the tip of the roller holder 31 of the 'H' cross-section described later, the roll shaft (12) On the upper end of the transparent disk 13 is fixedly installed as the bolt member 12a. Accordingly, the light transmitting disk 13 is rotated in the same rotational direction along with the rotation of the contact roller 11.

The light transmitting disk 13 forms a gear section 13a having a rectangular cross section at a constant pitch interval on the circumference thereof, and receives light on an imaginary line perpendicular to the gear section 13a, and emits light sensor members 14a and 14b. ) Is placed upside down. Accordingly, the light emitted from the light emitting sensor 14b is received by the light receiving sensor 14a through the valley portion of the gear portion 13a, but is fixed at the same time while the light transmitting disk 13 is rotated while being blocked at the mountain portion. It will generate pulses.

In addition, the light receiving and light emitting sensors 14a and 14b accommodated in the sensor cases 15a and 15b are mounted on the 'c' shaped sensor mounting stand 15 provided at the tip of the screw member 16a. The mounting table 15 is screwed into the screw hole of the mounting table 16 fixedly installed on the upper surface of the roller holder 31 so that the sensing position can be changed, and for fixing the position to the screw member 16a. A plurality of nut members 16b are mounted.

The light transmitting disk 13 and the light receiving and light emitting sensors 14a and 14b are disposed in an inner sealed space of the blocking case 14 installed on the roller holder 31 to block light and foreign substances from the outside. It is desirable to be equipped.

In addition, the operation unit 30 for intermittent contact between the contact roller 11 and the pivot shaft portion 4b includes an 'H' shaped roller holder 31 rotatably supporting the contact roller 11, and And a moving holder 32 which is always elastically supported toward the pivot shaft portion 4b, and a cylinder member 33 which horizontally moves the moving holder 32 to the pivot shaft portion 4b.

The roller holder 31 is slidably assembled in the inner hole 32a of the moving holder 32 opened to one side, and the roller holder 31 is disposed between the roller holder 31 and the moving holder 32. A shaft member 34a having a spring member 34 that elastically supports toward the pivot shaft portion 4b, and is prevented from being separated from the holder members 31 and 32 at left and right ends of the shaft member 34a. The nut members 34b are fastened to each other so as to vary the elastic force of the spring member 34.

In addition, the moving holder 32 is a sliding movement in the sliding groove (36a) formed on the horizontal surface of the main board 36 of the 'b' shaped cross section is fixed to the top of the base beam 35 fixed to the bottom surface The lower slide jaw 32b is formed on the bottom surface to be assembled as possible, and the end of the rod 33a of the cylinder member 33 is connected to one side of the moving holder 32. Accordingly, the contact roller 11 mounted at the tip of the roller holder 31 can be contacted or spaced apart from the outer surface of the pivot shaft 4b by the forward and backward motion of the cylinder member 33.

The cylinder member 33 is mounted by a flange 37 installed as a bolt member 37a on a vertical surface of the main board 36, and the rod 33a is welded to an upper surface of the moving holder 32. It is inserted into the connecting plate 38 and mounts the nut member 38a for preventing separation and length adjustment.

On the other hand, the control unit 50 counts the pulse signal generated by the light receiving, the light emitting sensors 14a and 14b, and converts the counted pulse amount into a distance so that the light receiving sensor 14a and the power cable can be displayed. A pulse counter 51 electrically connected to the pulse counter 51 for receiving the generated signal and counting the pulse signal, a converter 52 for converting the pulse amount counted by the pulse counter 51 into a distance, and displaying the converted distance. It consists of the display panel 53.

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

First, the operation of sealing the tap opening 9 opened after the operation of tapping the molten steel in the blast furnace as a mud material of the mud gun 5 is performed at the position A in the working standby state as shown in FIG. The mud gun 5 is rotated once to the position B so that the nozzle tip 5b is brought into close contact with the joint surface 8 of the tap opening, and the nozzle tip 5b of the mud gun 5 is pulled out at the tap opening 9. Before the close contact with the joining surface 8 of the mud gun 5, the mud gun 5 is in the work standby state in the A position, the operator preferentially selects a mud gun operating panel (not shown) equipped in the cab as a preparation operation. When the switch is selected and turned on, an electrical signal is transmitted to the cylinder member 33 side of the operating unit 30 to advance the rod 33a and at the same time, the light receiving and emitting sensors 14a of the detecting unit 10 are provided. Power is applied to the 14b side.

In this case, the moving holder 32 is horizontally moved toward the pivot shaft portion 4b of the mud gun 5 along the sliding groove 36a of the main board 36 by the forward operation of the cylinder member 33. The bending roller of the contact roller 11 is brought into close contact with the outer surface of the pivot shaft portion 4b of the roller holder 31 slidably assembled in the inner hole 32a of the moving holder 32. 11b is brought into close contact with the guide surface 11a.

At the same time, it is disposed between the moving holder 32 and the roller holder 31, the adhesion between the guide surface 11a and the bending louver 11b is improved by the elastic force of the spring member 34, and the cushioning section is secured. do.

As described above, the exit opening 9 is closed in a state in which the bending louver 11b of the contact roller 11 and the guide surface 11a of the pivot shaft portion 4b are in contact with each other by the forward operation of the cylinder member 33. And the B position shown in solid line at the A position shown in dashed line by the swinging operation of the arm 4a, with the fuselage 5a of the mud gun 5 assembled to the pivot shaft portion 4b for the purpose of measuring the swing amount. When turned to, the contact roller 11 in contact with and in close contact with the guide surface 11a of the pivot shaft portion 4b rotated together with this is also rotated in the direction of engaging with each other. At this time, the contact roller is prevented from slipping between the guide surface 11a and the bending louver 11b by the projection 11d formed on the outer surface of the bending louver 11b so as to rotate the contact shaft 4b. (11) is made to rotate.

Since the light transmitting disk 13 is assembled to the roll shaft 12 of the contact roller 11 which rotates in one direction simultaneously with the turning operation of the mud gun 5, the contact roller 11 is connected to the same vertical line. The light transmitting disk 13 also rotates together.

At this time, the gear portion 13a formed at the circumferential portion of the light transmitting disk 13 is formed with a square cross-section gear at a constant pitch, and the upper and lower portions of the gear portion 13a are perpendicular to the gear portion 13a. Since the light-emitting and light-receiving sensors 14a and 14b are disposed, light emitted from the light-emitting sensor 14b to which a voltage is applied in advance and irradiated to the light-receiving sensor 14a is rotated in one direction. Although interfering with the peak portion of the gear portion 13a of the block 13a, the transmitted light passing through the valley of the gear portion 13a is received by the light receiving sensor 14a, this operation is made continuously.

That is, FIG. 6 shows a circuit diagram and a characteristic diagram in which the magnitude of the voltage is changed according to the light that is transmitted through the light receiving sensor and is irradiated. As shown in FIG. 6, the voltage is reversed from the light receiving sensor 14a in the circuit diagram. When applied, the current hardly flows. At this time, light emitted from the light emitting sensor 14b, which is an external environmental change, is transmitted through the valley of the gear 13a, and light enters the light receiving sensor 14a. When the characteristics of the light receiving sensor 14a are changed, the resistance is reduced, and the circuit is brought into a conductive state while the current is increased. At this time, the light receiving sensor 14a preferably has a response characteristic with respect to the intensity of incident light to be less than a number (us).

As described above, by using the number [us] responsiveness of the light receiving sensor 14a generated due to continuous blocking and transmission of light in the light transmitting disk 13 which is rotated in one direction, the pulse counter 51 is continuously used. The number of times is counted, and the counted amount is transmitted to the converter 52 side of the controller to convert the distance.

Subsequently, the information obtained by converting the number of pulses to the mud gun 21 moving amount by the transducer 110 is transmitted to the display panel 53 side of the cab and displayed on the digital screen.

In addition, the operation of checking the depth H of the tap opening 9 during the operation is, first, to set the reference value (distance), after the tap forming repair work, the conventional measuring method (left and right ends of the tap opening 7). A straight rod (not shown) at, measure the length at right angles to the exit opening (9) and measure with a reference depth (H) of 450mm ± 50), and then measure the mud gun (5) with A Move from position to position B to get the mudgun's initial reference distance value.

   In addition, the turning amount (distance) obtained when the mud gun is completed once turning from the A position to the B position is displayed on the monitor, and at this time, the measured value and the initial reference distance value are compared with each other and the depth of the exit port 9 is greater than or equal to that of the muzzle gun. You can easily check whether or not.

Therefore, according to the present invention having the above-described configuration, the air is brought into close contact with the outer surface of the pivot shaft, which is the rotational center of the arm for pivoting the body of the mud gun, and the amount of rotation of the contact roller that is engaged and rotated is also detected. It is possible to accurately and precisely determine the depth of the exit port by detecting the turning amount of the mud gun that is turned from the position to the working position without error of position change, and calculating the value of the mud gun and displaying the necessary information on the display screen.

In addition, the effect of measuring the depth of the tap opening during operation can be safely performed without the risk of burns by the high-temperature melt and the risk of blast furnace gas leaking from the blast furnace surroundings as in the prior art.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (6)

Outlet opening in which mud material is filled using a mud gun 5 composed of a body 5a having a nozzle tip 5b and an arm 4a which pivots the body 5a around the pivot shaft 4b. In the device for checking the depth of (9), It is provided with a contact roller 11 which is rotated in surface contact with the outer surface during the pivoting operation of the pivot shaft portion 4b, and is disposed orthogonally to the circumferential portion of the light transmitting disk 13 which is rotated together with the contact roller 11. A detection unit (10) equipped with light emission and light reception sensors (14a) and (14b) for detecting the rotation amount of the light transmitting disk (13); And a moving holder 32 which elastically supports the roller holder 31, on which the contact roller 11 is rotatably supported, toward the pivot shaft portion 4b, and moves the moving holder 32 toward the pivot shaft portion 4b. An operation part (30) having a cylinder member (33) for horizontally reciprocating to control contact between the contact roller (11) and the pivot shaft portion (4b); And a control unit (50) for counting the pulse signals generated by the sensor members (14a) and (b) to convert the counted pulse amounts into distances and to display the distances. The method of claim 1, The contact roller 11 is provided with a ring-shaped banding louver (11b) of the same material as the guide surface (11a) is a heat-resistant rubber material mounted on the outer surface of the pivot shaft portion (4b), the bending louver (11b) is a roll Apparatus for checking the exit depth using mud plinth, characterized in that integrally mounted to the uneven roller band (11c) integrally mounted on the outer surface. The method of claim 2, Outlet depth using mud gun turning is characterized in that a plurality of projections (11d) is formed on the outer surface of the bending louver (11b) in contact with the guide surface (11a) to improve the surface contact force to prevent slipping Confirmation device. The method of claim 1, The light transmitting disk 13 forms a gear section 13a having a square cross section at a constant pitch at a circumferential portion of the light receiving and light emitting sensors 14a and 1b, and receives and emits light with the light transmitting disk 13. Sensor 14a, 14b is the exit port using mud gun turning characterized in that it is provided in the inner sealed space of the blocking case 14 installed on the roller holder 31 to block the light and foreign matter from the outside Depth check device. The method of claim 1, The roller holder 31 is slidably assembled in the inner hole 32a of the moving holder 32, and has a shaft member having a spring member 34 between the roller holder 31 and the moving holder 32. 34a), nut members 34b are fastened to the left and right ends of the shaft member 34a, respectively, and the moving holder 32 is provided in the sliding groove 36a of the main board 36 having a 'b' shaped cross section. The mud gun, characterized in that the lower slide jaw (32b) is formed on the bottom surface so that the slide movement is assembled, and the end of the rod (33a) of the cylinder member 33 is connected to one side of the moving holder (32) Depth check device using turning. The method of claim 1, The controller 50 includes a pulse counter 51 for counting the pulse signal received from the light receiving sensor 14a, a converter 52 for converting the pulse amount counted by the pulse counter 51 into a distance, and a conversion. Depth of the exit port using the mudgun turning, characterized in that consisting of a display panel 53 for displaying the distance.

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