KR20040005006A - A telescopic duct apparatus for collecting fume having cooling unit - Google Patents

Abstract

PURPOSE: A telescopic dust-collecting device with a cooling system is provided to improve the surroundings of a work place and prevent an accident by collecting dust and exhaust gas produced from a ladle. CONSTITUTION: A telescopic dust-collecting device with a cooling system includes a duct unit(10), a clamp unit(40), and a cooling water supply unit(60). In the duct unit, an outermost duct member is connected to a fixed duct(250) of a dust collector fan(252) side, plural duct members are slidably fitted to the inside of the outermost duct member, and a curved-type dust collecting hood(20) is connected to the front end of the innermost duct member. The clamp unit forms a fastening unit extended from the curved-type dust collecting hood to the upper side and has a driving source for operating a hook fastened to the fastening unit. The cooling water supply unit has a cooling water supply pipe(62) disposed among the duct members of the duct unit to supply cooling water and has a cooling water discharge pipe(64) for receiving the cooling water collected from the duct members. The cooling water discharge pipe is connected to a rack and a flexible hose to move forward and backward according to the movement of the duct member.

Description

Foldable dust collecting duct unit with cooling unit {A TELESCOPIC DUCT APPARATUS FOR COLLECTING FUME HAVING COOLING UNIT}

The present invention relates to a dust collecting device for collecting environmental pollution dust generated in the steel industry, and more specifically to the environment of the workplace by collecting dust and emissions generated from the ladle while moving along the ladle being transported by a crane. The present invention relates to a foldable dust collecting duct device having a cooling device that is greatly improved and improved to prevent a safety accident of an operator.

In general, in the steelmaking process for producing molten steel in the steel mill, as shown in FIG. 1, the molten steel is transferred to the converter 220 using the ladle 200 and the ceiling crane 210. That is, the ladle 200 is lifted from the starting ladle cart 205 by using the overhead crane 210, and moved to the converter 220 side to contain the molten steel in the converter 220.

In this process, the ceiling crane 210 moves linearly along the rail 232 on the beam 230 provided in the workshop, and the ladle 200 is suspended by the hook 212 of the ceiling crane 210. will be.

Hazardous dust and exhaust gases are intensively discharged from molten steel in these steelmaking processes, including furnace furnace, slag exhauster, charging ladle, tapping ladle, and chartered tapping port. Most of these are fixed places. The fixed dust collecting duct device 240 is mounted in the exhaust gas generating region to collect dust and exhaust gas.

However, when the ladle 200 is transported by the ceiling crane 210 unlike the dust and exhaust gas generation area, the molten steel contained in the ladle 200 is exposed to the outside and pollutes the workplace environment. In other words, when the crane 210 transports the ladle 200, since no dust collecting means may be provided in the related art, hot dust and exhaust gas have to be leaked into the workshop as it is.

Therefore, in the steelmaking process, the high temperature dust and exhaust gas emitted from the ladle 200 during the movement of the ceiling crane 210 provide a factor of large environmental pollution, so it is essential to improve the equipment in such a part. It was.

The present invention is to solve the conventional problems as described above, the object is to move along the ladle being transported by the crane to collect dust and emissions generated from the ladle can greatly improve the environment of the workplace, At the same time it is to provide a foldable dust collecting duct device having a cooling device that can prevent a worker's safety disaster from hot dust and exhaust gas.

In addition, the present invention provides a folding dust collecting duct device having an improved cooling device to prevent deterioration and breakage of the duct, and to increase the suction amount by reducing the volume of the dust and exhaust gas to be sucked to reduce the volume. It is.

1 is an overall configuration diagram showing a fixed dust collecting duct device according to the prior art;

2 is a cross-sectional view showing a stationary dust collecting duct device according to the prior art;

3 is a schematic view showing a folding dust collecting duct device having a cooling device according to the present invention as a whole;

4 is a cross-sectional view showing a foldable dust collecting duct device having a cooling device according to the present invention;

5 is an enlarged view showing a folding structure provided in a foldable dust collecting duct device having a cooling device according to the present invention;

6 is a cross-sectional view showing in detail the cooling device of the foldable dust collecting duct device according to the present invention.

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

10 ..... Duct unit 12, 14, 16, 18 .... Duct element

20 ..... Dust Hood 25 ..... Grand Packing

27 ..... Packing groove 30 ..... The rolling roller

36 ..... rail 38 ..... driving motor

40 ..... Clamp Unit 42 ..... Hook

45 ..... Hook 60 ..... Coolant Supply Unit

62 ..... Chilled water supply pipe 64 ..... Chilled water discharge pipe

66 ..... rack 68 ..... flexible hose

70 ..... High pressure air line 72, 74 ..... Coolant through

80 ..... heat exchanger 82 ..... circulation pump

100 ..... Automatic controller 200 ..... Ladle

210 ..... Ceiling crane 220 ..... Converter

232 ..... rail 240 ..... fixed dust collection duct

P1, P2, P3 .... Coolant Flow

The present invention to achieve the above object,

In the dust collecting duct device for collecting dust and exhaust gases generated from the ladle while moving along the ladle being transported by a crane,

The outermost duct member is connected to a fixed duct on the dust collector fan side, and a plurality of duct members are fitted in the inner side of the duct member so as to be movable. ;

A clamp unit having a hook extending from the dust collection hood of the duct unit to an upper side, the clamp unit having a driving source for operating the hook caught on the hook; and

It has a cooling water supply pipe for supplying cooling water between the duct members of the duct unit, and having a cooling water discharge pipe receiving the cooling water recovered from the duct member, the cooling water discharge pipe is moved forward and backward as the duct member of the duct unit moves By providing a foldable dust collecting duct device having a cooling device, characterized in that it comprises a; and a cooling water supply unit connected to the rack and a flexible hose.

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

The folding dust collecting duct device 1 having the cooling device according to the present invention is, as shown in FIG. 3, along the ceiling crane 210 for transporting the molten steel from the starting ladle 200 to the converter 220. It is folded.

The foldable dust collecting duct device 1 having the cooling device according to the present invention includes a duct unit 10 configured to be folded, and the duct unit 10 is the outermost duct member 12 having a dust collector fan ( 252 and a fixed duct 250 on the side of the bag filter 254, and a plurality of duct members 14, 16 and 18 are fitted to be slidable inside the duct member 12. A curved dust collecting hood 20 is connected to the front end of the inner duct member 18.

That is, as shown in FIG. 5, the duct unit 10 has the outermost first duct member 12 connected to the dust collector fan 252 and the fixed duct 250 on the side of the bag filter 254. The second, third and fourth duct members 14, 16 and 18 are sequentially inserted into the first duct member 12 so as to overlap each other so as to be slidable.

Such a folding duct unit 10 has a second duct member 14 inside the first duct member 12 that is firmly mounted via a connecting rod 12a on one side of the beam 230 on which the ceiling crane 210 is supported. ) Is slidably movable, and the third duct member 16 is fitted inside the second duct member 14 to be slidable, and the fourth duct member 16 is inserted inside the third duct member 16. 18) is fitted to slide.

In addition, since the curved dust collecting hood 20 is connected to the front end of the fourth duct member 18, the fourth duct members 18 are collected from the first duct member 12 and the dust collecting hood 20 and the dust collector. The fixed duct 250 of the fan 252 is to have a structure for folding.

In addition, each of the first duct member 12 to the fourth duct member 18 is formed with packing grooves 27 in which a plurality of grand packings 25 are seated, respectively, at both ends of its outer surface. The cooling water flow paths P1, P2, and P3 are formed between the 12 and fourth duct members 18 to prevent the dust and the exhaust gas from leaking out.

That is, the gland packings 25 are formed inwardly at the front end and outwardly at the rear end of the first duct member 12 to the fourth duct member 18, respectively, and are sealed with the duct member contacting them by being fitted in turn. It forms a sealing and guides the duct members sandwiched therebetween. Therefore, as shown in FIG. 6, a flow path P1 is formed between the inner circumferential surface of the first duct member 12 and the outer circumferential surface of the second duct member 14, and the inner circumferential surface of the second duct member 14 is formed. , A flow path P2 is formed between the outer circumferential surface of the third duct member 16, and a flow path P3 through which cooling water flows between the inner circumferential surface of the third duct member 16 and the outer circumferential surface of the fourth duct member 18, respectively. ) Is formed and a constant distance is maintained between each adjacent duct member 12, 14, 16, 18 due to such gland packings 25.

In addition, the duct unit 10 is equipped with rolling rollers 30 at the tip of the lower surface of the first duct member 12 to the fourth duct member 18, respectively, the rolling rollers 30 are the first duct It is connected to the lower surface of the member 12 to the fourth duct member 18 via a rod 32, which is the lower side of the first duct member 12 to the fourth duct member 18 When the duct unit 10 is folded or unfolded to support rolling movement on the rail 36 arranged in the longitudinal direction, the duct members 10 support each duct member so that the folding operation is smoothly performed.

Accordingly, the rods 32 supporting the rolling rollers 30 are slightly different in length from each of the first duct member 12 to the fourth duct member 18, and thus, the first duct member 12 to the other. The fourth duct member 18 is to enable the linear movement on the rail 36 accurately. In addition, the rolling motor 30 is mounted on the rolling roller 30 at the uppermost end, that is, on the rolling roller 30 on the side of the fourth duct member 18 so that the rolling roller 30 is rotated on the rail 36. As a result, the folding operation of the first duct member 12 to the fourth duct member 18 is further facilitated.

In the above, the configuration and effect of transmitting power from the travel motor 38 to the rolling roller 30 of the fourth duct member 18 is a technique known in the art that is operatively connected using a reducer or the like. Since it may be used, a detailed description thereof will be omitted.

The first duct member 12 to the fourth duct member 18 of the duct unit 10 connect the duct unit 10 and the ceiling crane 210 to be interlocked according to the movement of the ceiling crane 210. With the clamp unit 40, the clamp unit 40 has a hook 42 extending from the dust collecting hood 20 to the upper side, as shown in detail in FIG. It has a drive source for operating the engaging hook 45.

The clamp unit 40 is the hook 42 has a 단면 -shaped cross-sectional structure, which is caught by the hook 45 mounted on the lower surface of the ceiling crane (210). That is, the hook 45 is connected to the lever 47 to one side thereof, and the middle portion of the lever 47 is rotatably connected to the lower surface of the overhead crane 210 through the hinge 49, and the lever ( The other end of the 47 is connected to the rod 52 of the pneumatic cylinder 50, which is the driving source, so that the hook 45 moves up and down by the operation of the pneumatic cylinder 50.

The clamp unit 40 is separated by being lifted from the hook 42 when the hook 45 is raised by the operation of the pneumatic cylinder 50, and is caught by the hook 42 when the hook 45 is lowered. The hook 42 and the hook 45 is to be connected. Therefore, such a clamp unit 40 is to be connected to the duct unit 10 and the ceiling crane 210 is to be folded operation of the duct unit 10 along the crane (210).

On the other hand, the duct unit 10 is provided with a cooling water supply unit 60, the cooling water supply unit 60 is to prevent the duct unit 10 from being overheated by hot dust and exhaust gas, It has a cooling water supply pipe 62 for supplying cooling water between the first to fourth duct members 12, 14, 16, 18, and the duct members 12, 14, 16, 18. And a coolant discharge pipe (64) receiving coolant recovered from the rack, wherein the coolant discharge pipe (64) moves forward and backward as the duct member of the duct unit (10) moves forward and backward. Has a structure connected to

As the cooling water supply unit 60 is shown in detail in FIG. 6, the cooling water supply pipe 62 is connected to the rear end of the outermost first duct member 12, and the cooling water supply pipe 62 is automatically opened and closed. A second duct member 14 having a valve 62a and connected in parallel thereto and having a high pressure air pipe 70 having an automatic opening / closing valve 70a and positioned inside the first duct member 12. A coolant through hole 72 is formed at a front side of the channel so that a flow path P1 between the first duct member 12 and the second duct member 14 is formed between the second duct member 14 and the third duct member 16. Is communicated with the flow path P2.

In addition, the third duct member 16 has a cooling water through hole 74 formed at a rear side thereof, so that a flow path P2 between the second duct member 14 and the third duct member 16 is formed in the third duct member. It communicates with the flow path P3 between the 16 and the 4th duct member 18, The coolant discharge pipe 64 is connected to the front side of the 3rd duct member 16.

On the other hand, the coolant discharge pipe 64 is connected to the rack 66 and the flexible hose 68 to move forward and backward as the duct member of the duct unit 10 moves, as shown in detail in FIG. A groove-shaped groove 36a is formed on a lower surface of the rail 36, and a rack 66 having a U-shaped cross section is fitted into the groove 36a so as to be slidably movable in accordance with the groove 36a. A flexible hose 68 is hooked to the bottom ring 66a of the c) and is connected to the coolant discharge pipe 64. In addition, the cooling water discharge pipe 64 is equipped with a heat exchanger 80 and a circulation pump 82 at the rear end thereof so as to supply the cooling water of the low temperature to the cooling water supply pipe 62.

The heat exchanger 80 has a built-in coil (80a) supplied with cold coolant or refrigerant from a separate refrigeration unit (not shown) to lower the temperature of the hot coolant in the heat exchanger 80 flowing through the outside, As such, the low temperature cooling water is supplied to the cooling water supply pipe 62 through the pump 82.

Reference numeral 90 is a damper provided in the duct unit 10, 100 is an automatic control controller which is electrically connected to automatically control various control valves and power sources.

In the folding dust collecting duct device 1 having the cooling device of the present invention configured as described above, when the duct unit 10 is folded, the dust collecting hood 20 is located on the starting ladle cart 205 side, and the duct unit 10 ) Is extended to the converter 220 side.

In the folding dust collecting duct device 1 having the cooling device of the present invention, the cooling operation of the duct unit 10 is generally performed in a state in which the duct unit 10 is folded, that is, as shown in FIG. 6. That is, when the coolant is supplied through the coolant supply pipe 62 by the operation of the circulation pump 82, the coolant is supplied to the flow path P1 between the second duct member 14 located inside the first duct member 12. The coolant flows into the flow path P2 between the second duct member 14 and the third duct member 16 through the cooling water through hole 72 of the front side of the second duct member 14.

The third duct member (3) is formed from the flow path P2 between the second duct member 14 and the third duct member 16 through the coolant through 74 at the rear side of the third duct member 16. 16 is communicated with the flow path P3 between the fourth duct member 18 and circulated through the cooling water discharge pipe 64 provided at the front side of the third duct member 16. When the duct unit 10 is sufficiently cooled in this manner, the supply of cooling water to the cooling water supply pipe 62 is cut off and in such a state, the high pressure air pipe 70 connected in parallel to the side of the cooling water supply pipe 62 is closed. The valve 70a is opened by the operation of the controller 100 so that high pressure air flows into the cooling water flow paths P1, P2, and P3, which is the cooling water inside the cooling water flow paths P1, P2, and P3. These are pushed out as air pressure so that cooling water does not remain in the flow paths P1, P2, and P3.

Next, after the coolant is removed as described above, when the molten steel is to be transported and contained from the starting ladle 200 to the converter 220 side, when the overhead crane 210 lifts the starting ladle 200, the controller 100 ) Actuates the pneumatic cylinder 50 of the clamp unit 40 such that the hook 45 is hooked to the top of the hook 42.

At the same time, when the overhead crane 210 travels toward the converter 220 side, the traveling motor 38 provided in the rolling roller 30 of the duct unit 10 also operates to move the rails at the same speed as the movement speed of the crane 210. Run on (36). Accordingly, in the duct unit 10 connected to the ceiling crane 210 through the clamp unit 40, the fourth duct member 18 connecting the dust collection hood 20 is connected to the ceiling crane 210 along with the converter 220. Is moved to the side, in this case the dust collection hood 20 provided in the fourth duct member 18 is located on the upper side of the ladle 200 is moved so that the suction force from the dust collector fan 252 is ladle 200 Dust and exhaust gases emitted from the air are collected and purified through the bag filter 254 to be discharged to the outside.

Accordingly, in the foldable dust collecting duct device 1 having the cooling device according to the present invention, the dust collecting hood 20 is moved according to the movement of the ladle 200, and in this process, the fourth duct member 18 is the third duct. The third duct member 16 is withdrawn from the member 16, the third duct member 16 is withdrawn from the second duct member 14, and the second duct member 14 is withdrawn from the first duct member 12. As shown in FIG. 5, both the dust and the exhaust gas from the ladle 200 extending to the converter 220 side and being transferred in this process are collected and removed.

In addition, dust and exhaust gas are collected and removed in the process of pouring molten steel from the ladle 200 of the overhead crane 210 to the converter 220, and thus, dust and exhaust gas are discharged through the duct unit 10. Next, when the ladle 200 is returned to the trolley 205 side, the duct unit 10 also moves together to reduce its length, and in this process, the hose 66 connected to the cooling water discharge pipe 64 is connected to the rail 36. It is movable along the rail (36) through the rack (66) suspended from the lower surface of the ().

When the duct unit 10 is returned to its original state, the cooling water is supplied again through the cooling water supply pipe 62 to cool the heated add unit 10 due to the discharge of high-temperature dust and exhaust gas. This is to prepare for the next molten steel transfer operation.

In addition, when the pneumatic cylinder 50 of the clamp unit 40 is operated so that the hook 45 is separated from the hook 42, the ceiling crane 210 and the duct unit 10 are separated, so that the ceiling The crane 210 can be used for other operations other than the molten steel transfer operation. Therefore, the work can be achieved by selectively connecting to the duct unit 10 only during the molten steel transfer operation.

According to the present invention as described above, while the dust collection hood 20 is moved along the ladle 200 being transported by the crane 210 to collect the dust and exhaust gases generated from the ladle 200 by the bag filter ( By releasing to the side 254, the dust and exhaust gas from the ladle 200 is not directly discharged to the workplace. Therefore, the environment of the workplace can be greatly improved, and at the same time, it is possible to prevent a worker's safety disaster from high temperature dust and exhaust gas.

In addition, by providing a cooling device for cooling the duct unit 10 to prevent deterioration and breakage of the duct, and by reducing the volume of the dust and exhaust gas to be sucked to reduce the volume of the improved effect to greatly increase the suction amount To get.

Claims (6)

In the dust collecting duct device for collecting dust and exhaust gases generated from the ladle 200 while moving along the ladle 200 being transported by the crane 210, The outermost duct member 12 is connected to the fixed duct 250 on the dust collector fan 252 side, the plurality of duct members 14, 16, 18 slide the inside of the duct member 12 A duct unit 10 fitted to be possible and having a curved dust collecting hood 20 connected to a tip of the innermost duct member 18; A clamp unit (40) having a hook (42) extending upwardly from the dust collection hood (20) of the duct unit (10) and having a driving source for operating the hook (45) caught by the hook (42); and Cooling water discharge pipe (64) having a cooling water supply pipe (62) for supplying cooling water between the duct members (12, 14, 16, 18) of the duct unit (10), and receiving the cooling water recovered from the duct member (64). And a rack 66 and a flexible hose configured to move forward and backward according to the movement of the duct members 12, 14, 16, and 18 of the duct unit 10. Folding water collection duct device having a cooling device, characterized in that it comprises a; The method of claim 1, wherein each of the first duct member (12) to the fourth duct member (18) is formed in each of the outer end of the packing grooves (27) on which a plurality of grand packings 25 are seated Folding dust collecting duct device having a cooling device, characterized in that for forming the cooling water flow path (P1) (P2) (P3) between the first duct (12) to the fourth duct member (18). The method of claim 1, wherein the duct unit 10 is equipped with rolling rollers 30 at the front end of the lower surface of the first duct member 12 to the fourth duct member 18, respectively, the rolling rollers 30 are It is connected to the lower surface of the first duct member 12 to the fourth duct member 18 via a rod 32, and is supported on the rail 36 to enable rolling movement so that the duct unit 10 is folded or unfolded. In this case, the respective duct members support the duct members so that the folding operation is smoothly performed, and the rods 32 are slightly different in length from each of the first duct members 12 to the fourth duct members 18, respectively. Foldable dust collecting duct device having a cooling device, characterized in that the first duct member (12) to the fourth duct member (18) is able to move linearly on the rail (36) accurately. According to claim 3, wherein the rolling roller 30 of the uppermost stage is equipped with a traveling motor 38, the folding dust collector with a cooling device, characterized in that the rolling roller 30 is configured to rotate on the rail 36. Duct System. According to claim 1, wherein the cooling water discharge pipe 64 has a U-shaped groove 36a is formed on the lower surface of the rail 36, the groove 36a has a U-shaped cross section so as to be slidably movable The rack 66 is fitted, and the flexible hose 68 is connected to the lower end 66a of the rack 66 by a hook, and a heat exchanger 80 and a circulation pump 82 are respectively mounted at the rear end thereof. Folding dust collecting duct device having a cooling device, characterized in that configured to supply a low temperature cooling water to the cooling water supply pipe (62). The cooling apparatus according to claim 1, wherein the cooling water supply pipe (62) is configured to be connected with a high pressure air pipe (70) having an automatic opening / closing valve (70a) so that high pressure air can be introduced therethrough. Folding dust collecting duct device.