KR100896653B1 - A sintering trailer - Google Patents

Abstract

An expanded sintered trolley having improved air permeability of the expanded expanded portion is provided.

The widened sintered trolley comprises: a trolley main body provided with a traveling wheel; and a grate in which a raw material layer sintered on the upper side of the trolley is seated and fixed in the longitudinal direction on the trolley main body heat insulation plate, and a ventilation hole for air suction is formed therebetween. And, consisting of a vertical and horizontal expansion plate is connected to both sides of the balance body, the expansion plate is provided with a bogie side wall on one side; And, on the horizontal expansion plate is installed to enable the sintering width expansion of the bogie, width expansion A composite grate having a ventilation hole to enable aeration from the unit; and a locking pin detachably mounted through the horizontal extension plate to fix the grate at both ends of the grate. The locking pin includes the horizontal extension plate. A fixed end inserted into the pin through hole formed at the support to support the grate at both ends, and formed at the rear of the body formed behind the fixed end and having a horizontal extension plate. It will be provided with a fixing plate is inserted into the wedge is fitted.

According to the present invention, while expanding the width of the sintered bogie, while maintaining the air permeability in the expanded portion, while improving the production yield of the sintered ore using the continuous iron ore sintered bogie, in particular, the balance assembly characteristics in the width expansion section It is to let.

Iron Ore, Blast Furnace Industry, Iron Ore Sintering, Blocking, Sintering Bogie

Description

Wide sintered trolley which improves the assembly property of the width-expandable section with air permeability {A SINTERING TRAILER}             

1 is a perspective view showing a conventional widening sintered trolley

Figure 2 is a main part for explaining the raw material unbaking phenomenon generated in the width expansion portion of the conventional widening sintered trolley

3 is a view showing a fixed structure of a blind plate and a locking pin in a conventional wide sintered trolley,

(a) is a side view

(b) a perspective view of the main part

(c) is a front view

Figure 4 is a perspective view showing a widening sintered trolley to improve the assemblability of the width-expandable section having a ventilation according to the present invention

Figure 5 shows a composite grating used in the widening sintered trolley of the present invention,

(a) is a front perspective view

(b) bottom perspective view                 

Figure 6 is a perspective view showing a horizontal expansion plate used in the present inventors wide sintered trolley

FIG. 7 illustrates the horizontal extension plate of FIG. 6.

(a) is a plan view

(b) front view

(c) side view

Figure 8 is a side structural view showing a fixed structure between the composite grating and the horizontal expansion plate and the side wall and the balance body in the present inventors wide sintered trolley

Figure 9 shows the fixing structure of the grate through the horizontal expansion plate mounting of the locking pin in the inventors wide sintered bogie,

(a) is a side structure diagram

(b) front view

Figure 10 is a main view showing a locking pin of the present invention

Explanation of symbols on the main parts of the drawings

1 .... wide sintered trolley 10 .... bogie body

12 .... Insulation Piece 20 .... Grate Bar

20a .... Grate Jam End 20 '.... Both Ends Grate

42 .... Vertical extension 44 .... Horizontal extension

46 .... The bogie side wall 48 .... Pin-through hole

60 .... composite grate 62 .... aerator

62a .... 1st Aeration 62b .... 2nd Aeration                 

62a '.... Air passage 80 .... Locking pin

82 .... Fixed end 84 .... Pin body

86 .... Fixture 90 .... Wedge

92 .... holder 94 .... holder

96 .... Push pin

The present invention relates to a sintered bogie in which iron ore is loaded in a sintering process of iron ore to agglomerate iron ore so as to be injected into a blast furnace of a steel mill to perform a continuous sintering operation. In addition to maintaining the air permeability in the expanded portion and improving the production yield of the sintered ore without the unbaking phenomenon in the widened portion, in particular, the assemblability of the expanded portion having the air permeability with improved air permeability is improved The present invention relates to an improved wide sintered trolley.

In general, in the blast furnace operation of steel mills, when the ferrous iron ore is directly charged into the blast furnace, the flow of reducing gas in the blast furnace is not smooth, resulting in poor aging in the blast furnace operation, thereby reducing the output of the blast furnace. In the blast furnace operation, the iron ore needs to have a suitable size, for example, a diameter of about 5 mm to 50 mm to agglomerate the iron ore, while smoothing the flow of the reducing gas and smoothing the blast furnace loading. The oxidization process is called iron ore sintering process.

On the other hand, in the sintering machine process of manufacturing a sintered ore using a continuous iron ore sintering machine having a Dwight-Lloyd (DL) form, i. And sintered blended raw materials, that is, sintered raw materials such as iron ore, subsidiary limestone and fuel coke, are charged into a continuous sintered trolley moving in an infinite track through a charging chute and filled up to the sidewall height of the sintered trolley. Form a layer.

Then, the upper portion of the raw material layer is ignited through the ignition furnace, and when the ignition is completed, the air is sucked from the upper portion of the raw material layer to the lower portion by using an air inhaler at the lower portion of the moving truck so that the raw material layer can be continuously burned.

On the other hand, such a conventional sintered trolley, although not shown in the drawings, traveling wheels moving along the rail are provided on both sides of the lower side, side walls are provided on both sides of the bogie body, and the raw material in the longitudinal direction along the bogie body. A grate is arranged to form a vent for intake of air from the top to the bottom of the bed for combustion of the bed.

Next, when complete combustion is reached to the lower part of the raw material layer charged in the sintered trolley, the sintering operation of the raw material layer is finished, and only the sintered ore agglomerated remains on the sintered trolley, and the sintered trolley moves in an endless track, The empty sintered trolley, which distributes the sintered ore at the miner, moves in orbit and is loaded again through a charging chute, and repeatedly performs small resultant tablets undergoing a combustion step.

On the other hand, studies to increase the production of sintered ore than the conventional sintered bogie, that is, a study on the widened sintered bogie to expand the width of the sinter bogie to increase the loading amount of the raw material layer, in Figures 1 and 2 Such a conventional widening sintered trolley | bogie is shown.

That is, as shown in Figures 1 and 2, the conventional wide sintered trolley 100 grate 130 to provide a vent hole (130a) between the heat insulating plate 120 arranged in a row in the bogie body 110 ) Are disposed, and between the vertical and horizontal expansion plates 142 (FIG. 3) 144 connected to both sides of the balance body 110, a blind plate 140 at which the balance side wall 150 is disposed at the end is mounted and the sintered balance ( 100) to expand the sintering width, thereby increasing the sintering amount of the raw material.

However, in such a conventional wide sintered trolley 100, as shown in FIG. 2, air does not pass through the blind plate 140 provided on both sides of the trolley to extend the width of the substantially sintered trolley 100, In the expanded portion E of the sintered trolley 100, in particular, the edge portion E ′ adjacent to the side wall 150 of the sintered trolley 100, there is no ventilation for combustion of the raw material layer, so that the sintering of the raw material layer does not proceed properly. Therefore, there was a problem that eventually remains as an unbaked raw material layer.

That is, the raw material layer charged in the sintered trolley width expansion unit (E) does not have any air suction during sintering, so the unbaked raw material that is not completely sintered is distributed as it is, so that a large amount of dust is generated in the light distribution unit. Rather, it blocks the sintered ore screen to reduce screen efficiency.

On the other hand, Figure 3 shows the assembly structure in the width expansion portion of the conventional wide sintered trolley, the horizontal expansion plate 144 is fixed on the balance body 110, the vertical expansion plate 142 of Figure 1 is fixed to both sides The bogie side wall 150 to which the fastening bolts 152 to fix the blind plate 140 and the blind plate 140 are fixed as bolts B, and the horizontal extension plate 144 is connected to the bogie body 110. It is fixed as the bolt B.

And, as shown in Figure 3, of the grate 130 of the wide sintered trolley 100, the locking pin 160 for fixing the grate 130 'at both ends is integrally welded to the bottom of the horizontal expansion plate 144 A fixing pin 164 passing through the fixed support plate 162 is integrally installed as a square bar in front of the handle plate 168 fixed at one end as a holder 166, and the locking pin 160 has a bogie body ( The support jaw 170 supported by the 110 is welded and fixed.

Accordingly, the locking pin 160 is fixed to the lower locking portion 132 of the terminal grate 130 ′ through the balance body at the bottom of the horizontal expansion plate 144 fixed to the balance body 110. As in 1, the grate 130 of the grate 130 is fixed to the lower locking jaw (120a) of the heat insulating plate 120, both ends of the grate 130 adjacent to the blind plate 140 is a heat insulating plate of the grate 130 Since the grate catching portion 132 is positioned at the cutout portion (see 12 "in FIG. 4) of the heat insulating plate 120 for seating fixing, the grate 130 'at both ends with separate locking pins 160 is provided. To fix it.

However, in the conventional wide sintered trolley 100 as described above, the assembly structure at the widening portion is complicated, and in particular, the trolley 100 has a structure in which a locking pin 160 is fixed to fix the last grate 130 '. Because it is mounted on the lower side of the horizontal expansion plate 144, it is difficult to mount the balance of the locking pin 160, in particular, in order to mount the lock pin 160 to the balance inside the bottom of the horizontal expansion plate 144 Since the work must be performed at, the work is delayed due to the high temperature of the sintered bogie body, and the worker's safety accident is concerned.

Furthermore, the locking pin 160 fixing the locking portion 132 of the grate 130 ′ is formed as a square bar, so that the airtightness with the balance main body 110 is inferior. Since the vibration is generated, the locking pin 160 is easily caused to wear the locking pin 160 by repeated collision with the balance body 110.

Next, in order to solve the problems caused by the lack of air permeability described above, which is generated in the width expansion portion E of the conventional widening sintered trolley 100, by allowing the airflow in the widening width of the trolley, the sintering width is expanded while the sintering width is expanded. A sintered trolley for improving quality has been proposed by the inventors of the present invention in Korean Patent Application No. 10-2002-21461.

Meanwhile, the present invention further simplifies the composite grate proposed in the above patent application and substantially breathes in the widening portion, and in particular, facilitates assembly between the composite grate, the expansion plate and the balance body, A wide sintered trolley has been proposed to carry out a safe and easy carry-out of a locking pin for fixing.

The present invention has been made in order to solve the various problems as described above, the object of the present invention is to improve the sintering production while improving the sintering quality by preventing the raw material layer unbaking phenomenon in the width expansion portion by providing the air permeability in the balance width expansion portion In addition to the improvement, the assembly of the width-expansion portion having a breathability to facilitate the assembly of the balance in the width-expansion portion, and in particular, to carry out the balance removal of the locking pin to secure the locking portion to prevent the grate from falling off. It is to provide a widening sintered trolley with improved efficiency.

As a technical configuration for achieving the above object, the present invention, a multi-row heat insulating plate is installed on the upper side, both sides of the bogie body is provided with a traveling wheel for cart movement of the endless track; and the bogie body heat insulation plate It is fixed in the longitudinal direction, the grate is formed between the ventilation hole is formed between the ventilation hole is formed between the raw material layer sintered in the upper and; and consists of a vertical and horizontal expansion plate connected to both sides of the bogie body, An expansion plate provided with a bogie side wall on one side, and a composite grating having a ventilation hole installed on the horizontal extension plate to allow sintering width extension of the bogie and allowing aeration in the width extension part; and the horizontal extension plate. Includes detachably mounted through the locking pins for fixing the grate at both ends of the grate;
The locking pin is inserted into a pin passing hole formed in the horizontal extension plate to support the grate at both ends, and the fixing portion is formed in the rear of the body formed behind the fixed end and the wedge plate inserted through the horizontal expansion plate By providing a widening sintered trolley which improved the assemblability of the width-expansion portion provided with air permeability.

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

In FIG. 4, the expanded sintered trolley | bogie 1 which improved the assembly property of the width | variety expansion part which has air permeability is shown in perspective view.

That is, as shown in Figure 4, the sintered trolley 1 of the present invention is arranged in four rows of the heat insulating plate 12 on the main body 10, the grate 20 is seated on the upper grate, the grate (20) The lower portion of the heat insulating plate 12 is formed by the engaging portion 20a, and the grate 20 is inserted through the cutout portion 12 'of the heat insulating plate 12' at both ends of the insulating plate 12. When the lower locking portion 20a is caught and fixed to the jaw 12a, and the grate 20 is sequentially seated and supported on the heat insulating plate 12, the grate 20 'at both ends of the heat insulating plate 12 Since the locking jaw 20a is not fixed by the cutout 12 ", in the present invention, the fixed end 82a of the locking pin 80 is used to fix the locking portion 20a of the grate 20 'at both ends. It is fixed.

And, between the grate 20 is provided with a vent hole 22 is formed by processing the side part of the grate 20 to enable the air suction during the sintering of the raw material layer charged on the grate 20.

In addition, the vertical expansion plate 42 vertical to the side of the balance body 10 in Figure 4 is connected and fixed, the horizontal expansion plate 44 is fixed between the vertical expansion plate 42 not shown in Figure 4, and upwards The composite gratings 60 are arranged, and the bogie side wall 46 is disposed at the rear of the horizontal expansion plate 42 to the rear of the composite grate 60.

In addition, driving wheels 14 for substantially endless track movement of the trolley are provided at both sides of the trolley main body 10, and the sintering operation of the trolley is carried out between the composite grating 60 and both end gratings 20 '. It is important to arrange the grate 20 'at both ends so that an air passage 62a' is formed to allow air to be sucked through the air vents 62 of the compound grate 60 during the air suction.

Next, FIG. 5 shows a detailed perspective view of the composite grating 60 of FIG. 4 used in the widening sintered trolley 1 of the present invention, and the composite grating 60 of the present invention is as described above. Although already proposed in the domestic patent application 2002-21416, compared to the composite grate proposed in the patent application, the composite grate 60 of the present invention is manufactured and installed by simplifying and eliminating the complicated structure of the fixing jaw for assembly The composite grating 60 of the present invention has an air vent 62 while extending the sintering width of the sintered trolley 1 so that the assembly of the composite grating 60 of the present invention can be made easier. Despite the expansion of the sintering width by preventing the phenomenon, the sintering quality is kept constant.

That is, as shown in FIG. 5, the vent hole 62 of the composite grating 60 has an upper surface to communicate with the first vent hole 62a having an inner center thereof and the first vent hole 62a. It consists of an opening of the second vent hole 62b, and eventually the vent hole 62 forms a b-shape when viewed in cross section, and as shown in FIGS. 4 and 5, 3 on one bogie body 10. A row of composite gratings 60 are disposed, and one composite grating 60 has two rows of ventilation holes 62 formed therein, and as described above, the first ventilation holes 62a have both ends of grate 20 '. Air can be sucked through the first and second vent holes 62a and 62b facing the air passages 62a 'between the two and the air passages 62a', so that the amount of air at the widening portion (E in FIG. 2) can be increased. .

Meanwhile, as shown in FIG. 5, the composite grating 60 will be described in detail with reference to FIG. 8, but the bolt fastening hole 64 in which a bolt for fixing the composite grating 60 to the horizontal expansion plate 44 is fastened. And a step 66 is formed at the bottom thereof, which is to avoid interference with the bolt head B2 used when the horizontal expansion plate 44 and the balance body 10 are fixed to the lower side of the composite grating 60. It is for.

Next, FIGS. 6 and 7 illustrate a horizontal expansion plate 44 of the expansion plate 40 used in the sintering trolley 1 of the present invention, which will be described in detail with reference to FIG. 9. The bolt hole 44a into which the bolt through the bolt fastening hole 64 of the composite grating 60 is inserted and the bolt hole 44b through which the bolt fastened to the bogie side wall 46 pass to one side thereof are formed, respectively. On the other side of the bolt hole 44a, a bolt fastened to the bogie body 10 is fastened, and a bolt fastening hole 44c which is positioned below the compound grating 60 to avoid interference of the bolt is integrally formed. As a result, a total of three rows of bolt holes (fastening holes) are formed.

In addition, two bolt screw grooves 44d are formed at one side of each side of the horizontal extension plate 44, which is fastened to the bolt B1 fastened to the vertical expansion plate 42 as shown in FIG. 4. As a screw groove, for fixing the connection with the vertical expansion plate 42, the fixing plate 92 is integrally fixed to the bottom of the horizontal expansion plate 44 in the vertical line of the pin through hole 48, the fixing plate 92 ) Is for fixing the locking pin 80, which will be described in detail with reference to FIG.

At this time, the locking jaw (44e) is integrally formed on one side of the bottom of the horizontal expansion plate 44, the balance body 10 is in close contact with the bottom of the horizontal expansion plate 44 as shown in FIG. It is a part that is caught and supported by the balance body 10 in order to secure its fixing.

Next, as shown in Figures 6 and 7, the inner center of the horizontal expansion plate 44, that is, three points, that is, a pair is close, one is a pin through-hole 48 spaced apart from one another, such a pin The through hole 48 passes through the locking pin 80 described in detail in FIG. 10 so that the fixed end 82 actually fixes the lower locking portion 20a of the grate 20 'at both ends. The pin through hole 48 is formed into a two-stage pin through hole in which a locking jaw portion 48a to which the tapered portion 84a of the locking pin 80 is held and supported is integrally formed inside.

Next, FIG. 8 illustrates a fixed structure roll structure between the horizontal expansion plate 44, the bogie side wall 46, the composite grating 60, and the bogie body 10 in the widening sintered bogie 1 of the present invention.

That is, as shown in FIG. 8, the horizontal expansion plate 44 is fixed to the bogie body 10 with the bolt B2, and the horizontal expansion plate 44 as the bolt B3 and B4 as the bogie side wall 46. ) And the composite grating 60 is bolted, respectively, as described above, the horizontal expansion plate 44 is fixed to the vertical expansion plate 42 fixed to the bogie body 10 as the bolt (B1) is fixed sintering of the present invention In the trolley (1), the assembly of the width extension is simply made by bolting and connected to each other as a structure that is fixed is also maintained.                     

Next, in FIG. 9, in the widening sintered trolley 1 of the present invention, both ends of the grate 20 'support the locking pins 80 so as not to be separated from the cutouts 12 " The mounting structure is shown, and the locking pin 80 is shown in the main part in FIG.

First, as shown in FIG. 10, the locking pin 80 used in the sintering trolley 1 of the present invention is inserted into the pin through hole 48 formed in the horizontal expansion plate 44 and protrudes from the tip portion 82a. ) Is supported by the fixed end 82 for supporting the lower locking jaw 20a of the grate 20 'at both ends, and the inner locking jaw portion 48a of the pin through hole 48 behind the fixed end 82. Tapered portion (84a) is formed integrally, the body 84 is formed integrally with a ring (84b) to facilitate the attachment and detachment of the locking pin (80) at the rear, and formed on the rear of the body (84) It consists of a fixing portion 86 is inserted into the wedge plate 90 inserted through the horizontal expansion plate (44).

Therefore, as shown in FIG. 8, the horizontal expansion plate 44 is fixed to the balance body 10 as the bolt B2, and then the composite grating 60 is fixed to the horizontal expansion plate 44 as the bolt B3. Then, the rear side of the composite grate 60 is assembled by fixing the bogie side wall 46 as a bolt (B4) on the horizontal expansion plate 44, and then the retaining pins 80 to the ring 84b. The pin taper portion 84a is brought into close contact with the engaging portion 48a of the pin through hole 48 by being inserted into and pushed into the pin through hole 48 of the horizontal extension plate 44.

At this time, as shown in FIG. 9, although both ends of the grate 20 'are seated to form an air passage 62a' between the composite gratings 60 on both ends of the heat insulating plate 12 '. As described above, the locking portion 80a of the grate 20 'at both ends, which is not supported by the latching jaw 12a portion by the cutout portion 12 " It is to be fixed by the front end (82a) of the fixed end.

Next, after the locking pin 80 is inserted into the pin through hole 48 of the horizontal extension plate 44, the operator pushes the wedge plate 90 through the pin through hole 48 of the horizontal extension plate 44. After the upper end is inserted into the fixing portion 86 formed concave behind the locking pin body 84, the fixing plate integrally fixed to the bottom of the wedge plate 90 and the bottom of the horizontal expansion plate 44 ( After inserting the fixing pin 96 through 92, the fixing pin 96 protruding from the fixing plate 92 is fixed as the holder 94.

Accordingly, as shown in FIG. 7, the conventional locking pin 160, as shown in Figure 9, compared to the complicated operation of fixing the handle plate 168 adjacent to the balance body 110 side, as shown in FIG. Since the locking pin 80 is inserted and fixed through the horizontal expansion plate 44 at the outside of the bogie side wall rather than the conventional locking pin fixing position, not only the locking pin bogie mounting work, but also the operator can work more stably. It is also easy to fix the wedge substrate.

As a result, the widening sintered trolley 1 of the present invention enables the ventilation while expanding the sintering width as the composite grating 60 to prevent the unbaking phenomenon in the widening section according to the use of the conventional blind plate to improve the sintering quality, In particular, it is easy to assemble the bogie body in the width extension of the composite grate 60 and the expansion plate 40, easy to mount the bogie of the locking pin 80 to secure the grate 20 'at both ends and to perform the operation safely. It can be.

Thus, according to the expanded sintered trolley which improved the assemblability of the width-expanded section having the air permeability of the present invention, first, by using a composite grating through which air flows in the widened portion of the sintered trolley to prevent unbaking of the raw material layer in the widened portion There is an advantage in improving the sintering quality.

In addition, the connection between the composite grate and the horizontal expansion plate forming the width extension portion and the balance side wall and the balance body is easy, there is an effect to improve the assembly of the width expansion portion.

Moreover, since the locking pins fixing the grates at both ends are inserted and mounted at the outer side of the trolley through the horizontal extension plate and simply fixed by the wedge plate, the operator can perform the mounting and dismounting of the locking pin more stably than before. To provide an excellent effect.

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 (5)

A multi-row heat insulating plate 12 is installed on the upper side, and a bogie body 10 provided with driving wheels 14 for moving the trolleys of the endless tracks on both sides; and, on the bogie body heat insulating plate 12 in the longitudinal direction. Seated and fixed, the grate 20 is formed between the ventilation hole for air suction 22 is inserted between the raw material layer sintered thereon; and vertical and horizontally connected to both sides of the balance body (10) Expansion plate (40) consisting of the expansion plate (42), the side wall 46 is provided on one side; and the horizontal expansion plate (44) is installed on the horizontal expansion plate (44) to enable the sintering width expansion, the width expansion portion A composite grate 60 having an air vent 62 to enable aeration in the air; and a locking pin detachably mounted through the horizontal extension plate 54 to fix both ends of the grate 20 '. 80); The locking pin 80 is inserted into the pin through hole 48 formed in the horizontal extension plate 44 to support both end grate 20 'and the rear end of the fixed end 82. Wide sintered trolley to improve the assemblability of the breathable width expansion portion formed in the rear of the formed body 84 and having a fixing portion 86 is inserted into the wedge plate 90 inserted through the horizontal expansion plate. According to claim 1, wherein the fixed end end portion 82a of the locking pin 80 supports the lower locking jaw (20a) provided on the grate 20 'both ends, and the rear end of the fixed end 82 The body 84 is integrally formed with a taper portion 84a supported by the inner locking jaw portion 48a of the pin passing hole 48, and a ring 84b at the rear of the body 84 to facilitate attachment and detachment of the locking pin. Expanded sintered trolley which improved the assemblability of the width-expandable section having air permeability, characterized in that formed). 3. The wedge plate (90) according to claim 1 or 2, wherein the fixing pin (96) fixed as a holder (94) is fixed to the fixing plate (92) fixed integrally with the bottom of the horizontal expansion plate (44). The wedge plate 90 is fixed to the widening sintered trolley to improve the assembly of the breathable width expansion section, characterized in that the lock pin 80 is installed to be fixed. The vent hole 62 of the composite grating 60 has an upper surface so as to communicate with the first vent hole 62a having an inner center thereof and the first vent hole 62a. An air passage 62a 'formed between the opened second vent hole 62b and between the first vent hole 62a of the composite grating 60 and both end grates 20' on the adjacent insulating plate 12 '. Expanded sintered trolley which improved the assemblability of the width-expandable portion having air permeability, characterized in that formed. According to claim 1 or 2, wherein the horizontal expansion plate 44 is bolted to the balance body 10, the balance side wall 46 and the composite grating 60 is bolted to the horizontal expansion plate 44 , The vertical expansion plate 42 is bolted to the side of the balance body 10 and the horizontal expansion plate 44, the wide sintered trolley to improve the assemblability of the width-expansion unit having air permeability.

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