KR20030014961A - Apparatus for crushing out side wall of tuyere of blast-furnace - Google Patents

Abstract

PURPOSE: An apparatus for automatically crushing out outer wall of tuyere of blast furnace is provided to crush out the adhered outer wall such as coke and semi-molten material in the furnace surrounding the circumference of the tuyere of the blast furnace during replacement of a hot stove for blowing hot blast into the blast furnace. CONSTITUTION: In a tuyere cooler(14) fixed to metal case(12) of a blast furnace into which a hot stove for blowing hot blast into a blast furnace(10) is inserted, and a tuyere(16) connected to the inner side of the tuyere cooler(14), the apparatus for automatically crushing out outer wall of the tuyere of the blast furnace comprises a shaft driving part(20) comprising a frame(24) which is mounted on the upper part of a base part(22) to be moved so that the frame(24) is sequentially moved back and forth, a guide block(26) which is vertically installed at the upper side of a moving block(26a) on the upper part of the frame(24), and first and second driving shafts(28,30) which are mounted so that they are rotated in two stage through bearing blocks(39a,39b) that are spaced apart from each other between vertical end(24a) of the frame(24) and the guide block(26); a tuyere support part(40) comprising two step supporting members(42,44) which are cohesively supported to the inner surface of the tuyere(16) with the supporting members(42,44) being integrally connected to the front of the vertical end(24a) of the frame(24), and through the center of which the first and second driving shafts(28,30) pass to be supported thereto; and an outer wall crushing part(60) comprising first and second crushing elements(62,64) which are connected to the end part of the first and second driving shafts(28,30) respectively to crush out the adhered outer wall of the tuyere(16).

Description

Automatic shredding device of blast furnace outer wall {APPARATUS FOR CRUSHING OUT SIDE WALL OF TUYERE OF BLAST-FURNACE}

The present invention relates to a blower outer wall crushing device for crushing and removing the blower outer wall, such as coke (COKE) surrounding the blast furnace tuyere and semi-melt stuck in the furnace during replacement of the hot air blower that blows hot air into the furnace (blast furnace). More specifically, when replacing a worn or damaged hot air fan for a long time, it is possible to quickly and automatically break the air vent outer wall such as coke and solidified semi-melt in the furnace so that a new hot air fan can be smoothly inserted into the air vent of the furnace. The present invention relates to an automatic shredding device for the outer wall of a furnace.

1 shows a hot air blower for blowing hot air into a commonly known smelting furnace and charging of the smelting furnace therefor.

That is, as shown in Figure 1, the hot air blower 110 for blowing hot air to the furnace (blast furnace) 100 is joined to the large air vents 120 of the furnace 100, such a large air vents 120 The hot air fan 110 is inserted into and fixed in the blast furnace shell 102, and is positioned at a high temperature in the furnace (blast furnace) 100 having a temperature of about 2000 ° C. and near the top, and has a high temperature of about 1200 ° C. through the nozzle part inside. The hot air is blown into the blast furnace 100, and at this time, the air vent 122 integrally formed in front of the large air vent 120 serves as a passage for the hot air.

In addition, the front of the hot air blower 110 has a blow pipe 112 to create an inflow passage of the hot air, and at the same time the pulverized coal lance 114 serves to blow the pulverized coal into the furnace (blast furnace) to secure calories.

At this time, the hot air blown into the furnace helps the combustion of the coke (COKE) in the furnace 100 and makes the combustion zone 130, so that the ore accumulated in the layer is melted and melted, and the applied hot air is the hot air blower 100. Spread in the shape of a rubber balloon from the tip of the blow pipe 112 of the flow into the blast furnace 100, due to the iron ore falling in the blast furnace (blast furnace) 100, the hot air blower 110 is easily worn at its tip portion. It will cause a loss and should be replaced periodically.

However, the replacement operation of the hot air fan 110 is performed in a state in which no air is blown into the furnace (blast furnace), that is, in a cold air state, and after the air blower 110 has taken out the hot air fan 110 to the outside. In the surroundings, the coke and semi-molten material around the tuyere 120, for example, the molten molten water and the slag mixed with the slag is hardened to form the outer wall of the tuyere, due to the difference between the air tufts. It is necessary to remove the new hot air fan because it prevents the smooth insertion.

On the other hand, FIG. 2 shows a conventional operation of breaking the tuyere outer wall of the furnace 100.

That is, as shown in FIG. 2A, first, when the hot air fan 110 is removed from the tuyere 120, and then the tuyere 120 is removed from the iron shell 102 of the furnace, The furnace coke and the semi-melt 160 are hardened around the tuyere 122, and such coke and the semi-melt are 1.5 m away from the shell 102 of the actual furnace 100. It is located, the space is also narrow to about 400㎜ it is difficult to remove the work.

That is, since the work place is narrow and deep inside the furnace 100, it is difficult to crush hardened coke and semi-melt 160, and the work load is increased due to the high temperature of the surrounding work place, which requires a large number of workers. Done.

Therefore, as shown in FIGS. 2A and 2B, conventionally, one long jig 140 supports one worker and the other worker hits the jig 140 as a hammer to damage the coke and the semi-melt 160. Although it was removed, the work was cumbersome and the working time was considerably delayed.

Or, as shown in Figure 2b, the heavy breaker 150, the operator to operate the WHWKR, other workers need to help the internal check, such as troublesome to remove the hard coke and semi-melt of the outer wall as a whole There was.

As a result, a large number of working people have to be put into work for a long time, and in particular, safety accidents of workers are frequently generated during work, and there are various problems that decrease productivity of blast furnace work due to delays in replacement work of the hot air heater itself.

Therefore, it would be desirable to remove the hard coke and semi-melt in the outer wall portion of the furnace tuyere for replacement of the hot air balloon quickly and automatically without the operator's manual work.

The present invention has been made in order to solve the various problems as described above, the object of the present invention is to replace the hot air blower that blows hot air into the blast furnace, while using a device more quickly using the apparatus without the manual operation of the outer wall, such as coke and semi-melt melt The present invention provides an automatic blast furnace outer wall crushing device for blast furnace replacement that improves the manufacturing productivity of the blast furnace by quickly replacing the hot air blower.

In addition, another object of the present invention is to break the tuyere outer wall, so that the replaced hot air is inserted into the furnace in close contact with the tuyere portion of the furnace, thereby preventing the gas inside the furnace from leaking outside the furnace. The present invention provides an automatic shredding device for blast furnace outer walls to prevent safety accidents such as gas poisoning of workers due to harmful gases.

1 is a perspective view showing a hot air input operation of a typical furnace

2 (a) and 2 (b) are schematic diagrams illustrating a conventional tuyere outer wall crushing operation.

Figure 3 is an overall configuration diagram showing the automatic blast furnace outer wall crushing apparatus of the furnace according to the present invention

Figure 4 shows the shaft drive unit of the present invention outer duct crushing device,

(a) is a front view showing the overall configuration of the shaft drive unit

(b) is a principal configuration diagram showing the shaft drive unit

Figure 5 is a side structural view showing a movement configuration of the present invention device

Figure 6 is an exploded perspective view showing the outer wall crushing portion of the present inventors outer wall crushing device

7 is a main view showing a crushed piece of the present invention device

Figure 8 is a perspective view of the main portion showing the tuyere support members of the present invention device

9 is a view illustrating the shredding outer wall breaking operation of the present invention device,

(a) is a block diagram showing the entry state of the shredding unit

(b) is a block diagram showing the operation of the crusher

Explanation of symbols on the main parts of the drawings

1 .... Outer wall shredding device 10 ... Furnace

12 .... Cheolpi 14 .... Daegonggu

16 .... Flange 20 .... Shaft drive

22 .... Base 24 .... Frame

26 .... Guide blocks 28, 30 .... 1st and 2nd drive shaft

40 .... Funggu support 42, 44 .... 1,2 support member

60 .... Outer Wall Shredding 62,64 .... Shredding

As a technical configuration for achieving the above object, the present invention, in the blast furnace fixed to the blast furnace iron shell is inserted into the blast furnace is inserted into the blast furnace for charging hot air into the furnace,

It is equipped with a frame mounted to move forward and backward sequentially and a guide block vertically installed above the moving block on the upper portion of the moving base portion, respectively, and rotates in two stages through a bearing block spaced between the vertical end of the frame and the guide block. A shaft driver including first and second drive shafts mounted therein; Wow,

A tuyere support part integrally connected to the front of the frame vertical end and tightly supported on the inner side of the tuyere, and having a two-stage support member through which the first and second drive shafts are passed through the center; and

The outer wall crushing unit having first and second crushing pieces connected to the ends of the first and second drive shafts, respectively, to crush the fixed outer wall of the tuyere.

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

FIG. 3 is an overall configuration diagram of an apparatus for automatically cutting out tuyere outer wall of the blast furnace according to the present invention, FIG. 4 is a view showing an axial drive unit of the tuyere exterior wall shredding apparatus, and FIG. 6 is an exploded perspective view showing an outer wall crushing part of the shredding device, FIG. 7 is a main part showing a crushed piece of the device, FIG. 8 is a main part perspective view showing the bulging support members of the device, and FIG. The drawing shows the rupture of the outer walls of the tuyere.

In FIG. 3, the overall configuration of the apparatus for automatically opening the outer duct of the tuyere of the present invention is illustrated. The crushing apparatus 1 of the present invention has a shaft drive unit 20, the tuyere support 40, and the outer wall crusher. Divided as (60), each of the components (20) (40) (60) as described in detail as follows.

First, FIGS. 3 to 5 show the shaft drive unit 20 of the tuyere outer wall crushing device 1 of the present invention.

That is, as shown in Fig. 3 and Fig. 4a, the shaft drive unit 20 and the frame 24 mounted on the movable base portion 22 to be described later in detail to move forward and backward, respectively, The guide block 26 is vertically mounted integrally on the upper side of the moving block 26a.

In addition, the center and the outside of the two through a pair of bearing blocks (39a, 39b) disposed between the vertical end 24a and the guide block 26 formed integrally toward the front of the frame (24) The first and second drive shafts 28 and 30 of the stage are rotatably provided.

Meanwhile, as shown in FIG. 3, a guide portion 22a into which the foot of the forklift C for moving the crushing device 1 is inserted is integrally formed at the bottom of the base portion 22 of the shaft drive portion 20. 3 and 5, the side of the frame 24, the drive chain 32a and the guide chain 34a driven as the air motor 32 mounted to the rear of the base portion 22 ( A moving sprocket 36 to which the chain 34 driven as 34b is fastened is mounted, and rails 22b and guide grooves 24b guided to each other on the upper and lower portions of the base portion 22 and the frame 24. It is formed integrally, a lubrication line is provided between the rail (22b) and the guide groove (24b) for supplying a lubricant for smooth movement and to reduce friction.

On the other hand, the vertical end 24a of the frame 24 will be described in detail later, but the first and second drive shafts 28 and 30 are rotatably supported, and the first and second support members 42 and 44 are connected. Therefore, the front of the frame 24 moving along the base portion 22 should be integrally formed vertically.

Next, as shown in FIG. 5, the rail 26b is seated and moved in the guide groove 24c formed in the upper portion of the frame 24 at the bottom of the movable block 26a in which the guide block 26 is mounted at the center. ) Is integrally formed, and as described in the leaf, it is preferable that a lubrication line is also installed in the guide groove 24c and the rail 26b.

In addition, as shown in Figure 4a, the rear end of the moving block (26a) is connected to the cylinder 38 installed on the frame 24, the guide is installed in the moving block 26a and the upper center when the cylinder is driven The block 26 is integrally configured to move back and forth.

Meanwhile, as shown in FIGS. 4A and 4B, the first drive shaft 28 of the shaft drive unit 20 is formed of the frame vertical end 24a and the first and second support members 42 and 44. A gear part fixed to one bearing block 39b at one end of the first drive shaft 28 which is rotatably supported inside the bearing B provided in the center and protrudes outwardly of the vertical end 24a. 28a) are integrally connected to each other, and the gear 28a is engaged with the drive gear 28c of the air motor 28b through the guide block 26 so that the first drive shaft 28 rotates when the motor is driven. It is composed.

In addition, the second drive shaft 30 is rotatably supported inside the first drive shaft 28 through a bearing B, and a rear end of the base portion 22 is formed at a rear end of the second drive shaft 30. The air motor 30a installed at the top is connected to rotate.

That is, as shown in Figure 4b, the first drive shaft 28 is connected to the bearing block (39b) of the gear unit 28a through the connecting block (28d) through the vertical end (24a) of the frame 24 The second drive shaft 30 is connected to the air motor 30a through the other bearing block 39a through the inside of the first drive shaft 28.

At this time, the bearing B1 installed in the bearing block 39 is a watch-type thrust ball bearing, and the bearing block 39a on one side of the gear part 28a to which the first drive shaft 28 is connected through the rotary wheel b1. This rotation, the second bearing shaft (39a) is fixed to the guide block 26 is rotated by the second drive shaft 30 by the rotation wheel (b1).

When the cylinder 38 moves forward with the moving block 26a integrally during the forward operation of the cylinder 38, the rotary wheel b1 in the other bearing block 39a so that the bearing block 39a moves along the second drive shaft 30. It is important to have a slight tolerance, i.e., allowance between rotation and forward / backward movement between the second drive shaft 30).

In addition, as shown in FIG. 4, when the guide block 26 moves forward by the operation of the cylinder 38 and the other bearing block 39a moves forward to contact the one side bearing block 39b, as shown in FIG. 4B. The rotary wheels b1 of the bearing B1 rotate while contacting each other to enable the first drive shaft 28 to move forward integrally.

Next, FIGS. 3 and 8 show the tuyere support part 40 of the apparatus 1 of the present invention, wherein the tuyere support part 40 is integrally connected to the front of the frame vertical end 24a and the tuyere ( 16) It is provided in close contact with the inner side, and the second and second drive shafts 26 and 28 are provided with two stage support members 42 and 44 passing through the center thereof.

On the other hand, the first support member 42 of the tuyere support portion 40 is preferably formed in a cylindrical shape having the same diameter as the inner winding portion to be in close contact with the inner surface of the tuyere 16 of the blast furnace.

In addition, the second support member 44 is inserted into the first support member 42 and its rear end is fixed to an end thereof, and the first and second drive shafts 28 and 30 pass through the bearing ( The shaft support parts 46a and 46b to which B) is fixed are composed of three-stage bodies 44a, 44b and 44c spaced at equal angles formed at the front and the rear, and each of the bodies 44 has a blister hole. Fixed ends 45a, 45b, 45c, which are caught and fixed to the corner portions of 14, are formed integrally with each other.

Next, FIGS. 6, 7 and 9 show the outer wall crushing part 60 of the apparatus 1 of the present invention, wherein the outer wall crushing part 60 is the first and second drive shafts 28 and 30. And first and second shredding pieces 64 and 62, which are respectively connected to ends of the choppers, to break the fixed outer wall T of the tuyere 16.

6 and 7, the second crushing piece 62 of the outer wall crushing part 60 is attached to a fixing ring 62a having one end fixed to an end of the first driving shaft 28. Link 63 is connected, the front end portion is provided in the longitudinal direction a plurality of fixing rods 62c connected to the fixing ring 62b fitted to the end of the second drive shaft 30 in the longitudinal direction, as shown in FIG. As described above, it is preferable that the second crushing pieces 62 installed on the three-stage fixing rods 62c are positioned so that their crushing paths do not overlap with each other.

On the other hand, the first shredding piece 64 is connected to the distal end of the first drive shaft 28 is installed to remove the fixation in front of the wind hole 16 when the drive shaft is rotated, the fixing ring 62a ( If the holding force of the first drive shaft 28 is lost between the 62b), that is, the bearing blocks 39a and 39b are in contact with the movement of the guide block 26, and the heap pushing the first drive shaft 280 disappears, the first drive shaft ( The spring (S) for applying a force to the rear to return 28 is made of a configuration that is coalesced.

Referring to the operation of the present invention made in the above configuration in detail as follows.

3 to 9, the outer wall T of the tuyere 16 generated when the cool air flows into the furnace for replacement of the hot air is introduced into the furnace, and coke and the fixed semi-melt are deprived of heat and hardened. Fenggu outer wall shredding device (1) of the present invention to easily remove the shredding without manual operation of the operator is as follows.

First, as shown in FIG. 3, when the foot of the forklift C is inserted into the guide portion 22a of the base portion 22 and the device 1 is moved and inserted into the furnace blister 14, FIG. 9A. As shown in FIG. 1, the first drive shaft 28 is pushed backward by the elasticity of the spring S, that is, the fixing rods 62c provided with the second shredding pieces 62 are retracted into the tuyere 16. Enters, wherein the first support member 42 of the tuyere support 40 is in close contact with the inner side of the tuyere 16, and then the bodies 44a, 44b, 44c of the second support member 44. The fixed ends 45a, 45b, 45c formed at the upper portion are closely supported at the corners of the tuyere 16.

By the way, as shown in FIG. 3, since it is difficult for the forklift C to precisely adjust the position of the apparatus 1, when it is set to some extent, the fixed plate 12 of the furnace shell 12 with the said vent hole 14 is mounted. ') And the fixing plate 22' protruding in front of the base portion 22 as a fixing bolt (P) to prevent the flow of the device (1).

Next, as shown in FIGS. 3 and 4A, when the entrance of the tuyere 16 of the apparatus 1 is completed, the air motor 32 is operated to drive the drive chain through the sprockets 32a, 34a, 34b. 34 is rotated and the frame 24 provided with the moving sprocket 36 engaged therewith is advanced along the rails and the guide grooves, as shown in FIG. 5, and eventually at the vertical end 24a of the frame 24. The connected first and second support members 42 and 44 are in close contact with the inner side and the outer edge of the tuyere 16.

In this case, as shown in FIG. 4, when the air motor 30a installed in the base portion 22 is operated, the second drive shaft 30 may have a bearing B1 of the bearing blocks 39 and the first and second supporting members. (42) (44) rotates through the bearing (B) inside the central shaft support part (46), and the first shredding piece (64) installed at the tip thereof rotates integrally to fracture the fixing outer wall (T) in front of the tuyere. It acts as a centering device.

Next, as shown in FIG. 4, when the cylinder 38 installed on the frame 24 is advanced to move the moving block 26a, the guide block 26 and the other bearing block 39a are moved forward integrally. Eventually, one side of the bearing block 39a is pushed, and the first driving shaft 28 connected to the one side bearing block 39b is also advanced while the second driving shaft 30 between the fixing rings 62a and 62b of the front end thereof. As illustrated in FIG. 9B, as the spring S bulged outward is compressed, fixing rods 62c connected to the fixing rings 62 are opened to the outside, and as shown in FIG. 7. The second shredding pieces 62 installed on the fixing rods 62c allow the tuyere outer wall T to be shredded.

In this case, as shown in FIG. 7, the second crushing pieces 62 are installed to have different circular motion paths on the respective high and low rods, thereby enabling more efficient crushing work.

As shown in FIG. 4A, when the air motor 28b installed in the moving block 26a rotates, a drive gear 28c driven integrally engages with the gear portion 28a of the first drive shaft 28. When the driving of the rear first drive shaft 28 is performed and the guide block 26 is moved backward, the bearing blocks 39 are spaced apart from each other and there is no force to press the second drive shaft 28 to the elastic force of the spring S. As the rear fixing ring 62a is pushed, the fixing rods 62c are retracted by the operation of the link 63, thereby performing the escape of the apparatus 1 as the forklift C.

Of course, as shown in Figure 3, after the fixing bolt (P) first dismantled, the air motor (30a) on the base portion 22 is rotated in reverse to move the frame 24 to the rear end of the vertical end (24a) After the first and second supporting members 42 and 44 connected to the front of the a) slightly away from the tuyere 16, the apparatus 1 is moved as a forklift.

On the other hand, although not shown in the figure, in order to control the movement of the frame 240, it is preferable to adjust the movement of the frame 24 by installing a limit switch in front of and behind the movement path of the frame 24. It may be desirable to install a limit switch in front of and behind the movement path to adjust the movement of the guide block 26 and the bearing block 39 through the block 26a.

Accordingly, in the present invention, it is easier to replace the hot air fan by automatically crushing the forklift after moving the forklift, as compared to the conventional worker manually handling the air vent outer wall T such as coke and semi-melt fixed in the furnace when the hot air fan is replaced. Safety accidents are also prevented.

As described above, according to the present invention, the automatic shredding device of the outer blast furnace of the blast furnace is used to quickly and precisely remove crushed substances such as coke and semi-melt in the outer blast furnace by using a device without manual labor. In this way, it is possible to quickly change the hot air blower, thereby improving the production productivity of the furnace.

Furthermore, by breaking the outer wall of the tuyere, the replaced hot air is inserted into the furnace in close contact with the tuyere of the furnace, thereby preventing the gas inside the furnace from leaking to the outside of the furnace. It provides an excellent effect of preventing safety accidents such as gas poisoning of workers.

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 know that those who have knowledge of this can easily know.

Claims (6)

In the blast furnace 14 fixed to the blast furnace shell 12 into which the hot air fan which charges hot air into the blast furnace 10 is inserted, and the tuyere 16 connected inward, The frame 24 is mounted on the upper part of the moving base portion 22 in order to move forward and backward, and the guide block 26 is installed vertically above the moving block 26a. Shaft drive unit 20 including first and second drive shafts 28 and 30 mounted to rotate in two stages through bearing blocks 39a and 39b spaced apart between stage 24a and guide block 26. ); Wow, It is integrally connected to the front of the frame vertical end (24a) is supported in close contact with the inner surface of the tuyere 16, the second stage support shaft (26, 28) is supported in two stages through the center ( A tuyere support 40 having 42 and 44; And, Outer wall crushing having first and second crushing pieces 64 and 62 connected to ends of the first and second drive shafts 28 and 30, respectively, to crush the fixed outer wall T of the tuyere 16. Part (60); Outer wall automatic shredding device of the furnace characterized in that consisting of According to claim 1, The base portion 22 is formed integrally with the guide portion (22a) into which the forklift's foot is inserted, the air motor mounted to the rear of the base portion 22 on the side of the frame (24) A driving sprocket 36 to which the chain 34 driven as 32 is fastened is mounted, and rails 22b and guide grooves 24b guided to each other are provided at upper and lower portions of the base 22 and the frame 24. It is formed integrally, the vertical end 24a of the frame 24 is automatically formed in the front of the base vertically rupture apparatus for the outer vent of the furnace, characterized in that The rail 26b according to claim 1 or 2, wherein the guide block 26 is seated and moved in a guide groove 22c formed at an upper portion of the frame 24 at the bottom of the movable block 26a. ) Is integrally formed, The rear end of the movable block 26a is connected to a cylinder 38 installed on the frame 24, so that the guide block 26 on the movable block 26a moves forward and backward when the cylinder is driven. Outer wall automatic shredding device The bearing B of claim 1, wherein the first drive shaft 28 of the shaft drive unit 20 is provided at the center of the frame vertical end 24a and the first and second support members 42 and 44. A gear part 28a fixed to one bearing block 39b is integrally connected to one end of the first drive shaft 28 that is rotatably supported inside and protrudes outwardly of the vertical end 24a. The first driving shaft 28 is configured to rotate when the driving gear 28c of the air motor 28b through the guide block 26 is engaged with the gear part 28a. The second drive shaft 30 is rotatably supported inside the first drive shaft 28 through a bearing B, and is formed at a rear upper portion of the base portion 22 at a rear end of the second drive shaft 30. Automated shredding outer wall of the furnace characterized in that the installed air motor (30a) is connected The method of claim 1, wherein the first support member 42 of the tuyere support portion 40 is formed in a cylindrical shape to be in close contact with the inner surface of the tuyere 16, The second support member 44 is inserted into the first support member 42, and its rear end is fixed to an end thereof, and the bearings B through which the first and second drive shafts 28 and 30 pass. The blast support outer wall automatic shredding device of the furnace characterized in that the fixed shaft support (46a) (46b) is composed of three-stage body (44a) (44b) (44c) spaced at equal angles formed in the front and rear. The method of claim 1, wherein the second crushing piece 62 of the outer wall crushing portion 60 is connected to the link 63 to the fixing ring 62a, one end of which is fixed to the end of the first drive shaft 28, The front end portion is provided in plural in the longitudinal direction to the three-stage fixing rod 62c connected to the fixing ring 62b fitted to the end of the second drive shaft 30, The first shredding piece 64 is connected to the distal end of the first drive shaft 28 to automatically remove the blower outer wall of the furnace, characterized in that configured to remove the fixation in front of the tuyere 16 when the drive shaft is rotated.