KR100838838B1 - Apparatus for automatic shutting of slag gate - Google Patents

Abstract

The present invention relates to an apparatus for automatically opening and closing the outlet of the large waterway, and more particularly, to an apparatus for automatically opening and closing the outlet according to the melt level in the large waterway.

The outlet automatic opening and closing device of the present invention is installed in the upper main cover 10 of the large tap water, and automatically removes the outlet 4 which is the outlet of the slag 12 in the large tap degree 3 according to the melts 11 and 12 levels. An apparatus for opening and closing, comprising: a float (19) composed of refractory having a specific gravity lighter than that of the slag (12), and floating on the slag (12); A level recognizer (16) installed above the vertical round bar (17) connected to the floating body (19), which is a metal body having a magnetic body that simultaneously moves up and down according to the vertical floating movement of the floating body (19); Upper and lower limit sensors 15a and 15b for detecting the upper and lower limit positions of the reference in accordance with the vertical movement of the level recognizer 16; A control unit (33) for operating the connected slanoid valve (27) in accordance with the upper and lower limit detection signals transmitted from the upper and lower limit sensors (15a, 15b); An air cylinder 22 which is operated by the air supply is converted and controlled by the slanoid valve 27, and is installed in a space immediately above the exhaust port 4; A semi-circular opening and closing block 26 connected to one end of the vertical lower portion of the air cylinder 22 to move up and down according to the operation of the air cylinder 22 to open and close a semi-circular exhaust port; Characterized in that consists of.

Baejae-gu, slag, re-entry, exit, Daetang-do, furnace

Description

Apparatus for automatic shutting of slag gate}

1A is a cross-sectional view showing the configuration of a large bath.

Figure 1b is a perspective view showing the configuration of the large bath.

Figure 2 is a view showing a situation of blocking the exhaust outlet by making a sand mound by the conventional manual work.

Figure 3 is a cross-sectional view illustrating the automatic switch opening and closing device according to the present invention.

Figure 4 is a perspective view of the guide pillar constituting the automatic opening and closing device according to the present invention.

Figure 5 is a view showing a level floating body constituting the automatic vent opening and closing device according to the present invention.

Figure 6 is a view showing the opening and closing block constituting the automatic switchgear automatic opening and closing device according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: furnace 2: tap hole

3: main iron through 4: slag gate

5: skimmer (exhaust machine) 6: iron runner

7: slag runner 10: top cover                 

11: molten iron 12: slag

13: sand canister 15a: upper limit sensor (sensor)

15b: lower limit sensor 16: level recognizer

17: round bar 18: guide pillar

18a: guide groove 19: float

22: air cylinder 26: opening and closing block

27 solenoid valve 33 control unit

The present invention relates to an apparatus for automatically opening and closing the outlet of the large waterway, and more particularly, to an apparatus for automatically opening and closing the outlet according to the melt level in the large waterway.

In general, the iron ore dissolved in the furnace 1 flows into the large bath 3 at the same time as the opening of the outlet 2 in a molten state, and the melt introduced into the large bath 3 is temporarily stored (see FIG. 1). ).

At this time, the melted temporarily stored in the molten iron (specific gravity: 7.8) with a specific gravity due to the difference in specific gravity is collected in the lower portion of the large bath, flow through the gap (8) of the lower skimmer 5, flows to the ground water (6), the post-process The slag (specific gravity: 2.3), which has a specific gravity lower than that of molten iron, is suspended at the top of the large hot water and blocked by the skimmer 5, and then discharged to the ash hot water 7 through the discharge hole 4. Will be separated.

At this time, in order to stop the discharge of the slag, a method of blocking and blocking the exhaust port 4 with the sand cloth 13 is used, and workers put sand in the sand cloth 13 to be discharged from the upper cover 10. Exhaust port is blocked by transporting and throwing up to sphere 4 to form a sandpit.

Therefore, the production of fly ash during the throwing operation of the sand cloth 13 causes worker's breathing difficulties due to the radiant heat generated from the hot water 3 and the work load.

The present invention was devised to solve the above problems, and provides a device for automatically opening and closing the outlets in accordance with the melt level in the large baths, without the use of sand mounds in the shutoff of the large bath. There is a purpose.

Other objects and advantages of the invention will be described below and will be appreciated by the practice of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the appended claims.

The automatic discharge opening and closing device of the present invention for achieving the above object is installed on the upper cover 10 of the large tap water, and melts the discharge hole 4 which is the outlet of the slag 12 in the large tap water 3. 12) A device for automatically opening and closing according to the level, comprising: a float (19) composed of refractory having a specific gravity lighter than that of the slag (12), and floating on the slag (12); A level recognizer (16) installed above the vertical round bar (17) connected to the floating body (19), which is a metal body having a magnetic body that simultaneously moves up and down according to the vertical floating movement of the floating body (19); Upper and lower limit sensors 15a and 15b for detecting the upper and lower limit positions of the reference in accordance with the vertical movement of the level recognizer 16; A control unit (33) for operating the connected slanoid valve (27) in accordance with the upper and lower limit detection signals transmitted from the upper and lower limit sensors (15a, 15b); An air cylinder 22 which is operated by the air supply is converted and controlled by the slanoid valve 27, and is installed in a space immediately above the exhaust port 4; A semicircular opening and closing block 26 connected to one end of the vertical bottom of the air cylinder 22 and moving up and down according to the operation of the air cylinder 22 to open and close a semicircular outlet. The opening / closing block 26 is a high temperature castable 26a as a refractory material, an iron core 26c provided therein to prevent the refractory from falling off, and is installed inside the refractory, but welded to the outside of the iron core. It is characterized by consisting of a "Y" shaped stud 26b.

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

Figure 3 shows an automatic outlet opening and closing device according to the present invention.

Referring to this, the apparatus for detecting the level of the melt in the large waterway 3 on the left side of the large waterway 3 is provided with a large waterway upper cover 10 as long as the length of the large waterway. And a device for opening and closing the exhaust port 4 in accordance with the melt level detection of the apparatus, immediately above the exhaust port 4.

In the melt level detection device, a cylindrical guide pillar 18 is installed vertically on the large-scale upper cover 10, and the guide pillar 18 is provided with a round bar 17 capable of vertical movement. A floating body 19 floating up and down is connected to the lower end of the round bar 17 according to the level of the melt, and the round bar 17 connected according to the vertical movement of the floating body 19 is also vertically moved up and down. .

The floating body 19 is composed of an erosion resistant refractory having a specific gravity of 1.5 to 2.0 lighter than the slag 12, the outside is formed, the inside of the refractory is composed of an iron core 21 for supporting the refractory does not fall off.

This material configuration is the same as the above-described round bar 17, the lower end of the iron core 21 in the round bar 17 and the upper end of the iron core 20 in the floating body 19 can be mutually assembled In case of damage, it is easy to replace.

The upper right position of the round bar 21 is provided with a level recognition body 16, which is a magnetic metal body, and for vertical movement of the level recognition body 16, the above-described guide column 18 in the vertical longitudinal direction Incision groove 18a is provided (see FIG. 4).

Upper and lower limit sensors 15a and 15b for detecting the vertical movement of the level recognizer 16 are provided at an appropriate position on the upper part of the frame 14 provided perpendicular to the upper top cover 10 of the large bath.

Electrical signals generated by the upper and lower limit sensors 15a and 15b are transmitted to an electric control panel 33, and the control unit 33 controls the exhaust opening and closing device through a solenoid valve 27 to be described later. , The outlet 4 is opened and closed according to the situation.

Furthermore, in the exhaust opening / closing device provided in the upper part of the exhaust opening 4, the support frames 23a and 23b are fixedly installed on the upper cover 10 of the large hot water supply system, and air is provided to these support frames 23a and 23b. The cylinder 22 is installed, and the air line 31 for operating the air cylinder 22 has a manual valve 30 for shutting off the air, an air filter 29 for removing foreign substances, and a pressure reducing valve 28 for adjusting pressure. The solenoid valve 27 for switching the air flow path is connected, and the solenoid valve 27 is connected to the air cylinder 22 through the flexible hoses 32a and 32b.

A detachable adapter 24 is provided at the end of the arm portion of the air cylinder 22, and through the round bar 25, an open / close block 26 having a semicircular cross section is connected thereto. .

The material configuration of the round bar 25 and the opening and closing block 26 is the same as the above-described round bar 17 and the floating body 19, and has iron cores 25a and 19c therein, and the outside is surrounded by refractory materials. (See FIG. 6).

In this material configuration (in the case of 17, 19, 25, 26), as shown representatively in Figs. 5 and 6, the wire core (19c, 26c) and the outside ("Y") in order to prevent the refractory falling off ) Welding studs (26b) and constructing a refractory which can withstand high temperatures on top, where the refractory is castable (high temperature (above 1,500 ° C.) castable) 26a) is used.

Hereinafter, the operation of the automatic shut-off switchgear according to the present invention will be described in detail.

The melt discharged from the blast furnace 1 through the outlet port 2, that is, the molten iron 11 and the slag 12 flows into the large bath, separated by the skimmer 5 in the large bath 3, and the molten iron ( 11 is guided to the scrubber 6, and the slag 12 is discharged to the reflow tap 7 through the outlet 4.                     

The melt in the large bath 3 is located at the lower side and the slag at the upper side due to the specific gravity difference (melting point: 7.8, slag: 2.3).

Accordingly, since the floating body 19 made of erosion resistant refractory has a specific gravity of 1.5 to 2.0 which is lighter than that of the slag 12, the floating body 19 is always suspended above the slag layer according to the level of the large bath degree 3, The round bar 17 connected to 19 moves up and down in the vertical direction along the guide pillar 18 vertical groove 18a, and when brought to the upper limit position, by the proximity of the level recognizer 16 integrally connected thereto. The upper limit sensor 15a detects this, and transmits an upper limit detection signal to the control unit 33, and the control unit 33 immediately operates the snoroid valve 27 to supply air to the air cylinder 22 along the flow path. And the opening / closing block 26 moves to the upper end portion in the vertical direction through the adapter 24 and the round bar 25 installed at the arm end of the air cylinder 22, and thus the semicircular discharge opening 4 By opening one side, the slag 12 to the re-seat 7 through the outlet 4 Let it flow

 In addition, when the melt level in the large bath 3 is lowered, the floating body 19 is lowered at the same time, and accordingly, by the proximity of the lower limit of the level recognizer 16, the lower limit sensor 15b transmits a lower limit detection signal to the control unit ( 33, the control unit 33 operates the air cylinder 22 through the slanoid valve 27, the opening and closing block 26 moves to the lower portion in the vertical direction to block the exhaust port, slag ( The discharge of 12) is stopped.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Various modifications and variations are possible, of course, within the scope of equivalents of the claims set out below.

According to the present invention, the opening and closing of the outlet is not realized by manual work, but can be automatically realized, so that the management can be improved, and the worker safety accident by manual work can be prevented and stable operation can be achieved.

Claims (1)

A large hot water is also provided on the upper cover 10, and is an apparatus for automatically opening and closing the exhaust hole 4, which is the outlet of the slag 12 in the large hot waterway 3, in accordance with the melt levels 11 and 12, A float 19 composed of refractory lighter than the slag 12 and floating on the slag 12; A level recognizer (16) installed above the vertical round bar (17) connected to the floating body (19), which is a metal body having a magnetic body that simultaneously moves up and down according to the vertical floating movement of the floating body (19); Upper and lower limit sensors 15a and 15b for detecting the upper and lower limit positions of the reference in accordance with the vertical movement of the level recognizer 16; A control unit (33) for operating the connected slanoid valve (27) in accordance with the upper and lower limit detection signals transmitted from the upper and lower limit sensors (15a, 15b); An air cylinder 22 which is operated by the air supply is converted and controlled by the slanoid valve 27, and is installed in a space immediately above the exhaust port 4; A semicircular opening and closing block 26 connected to one end of the vertical bottom of the air cylinder 22 and moving up and down according to the operation of the air cylinder 22 to open and close a semicircular outlet. The opening / closing block 26 is a high temperature castable 26a as a refractory, an iron core 26c installed therein to prevent the refractory from falling off, and is fixed to the outside of the iron core by being installed inside the refractory. Discharge opening and closing device characterized in that consisting of a "Y" shaped stud (26b).

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