JPH11270972A - Duct exhaust device in sintering machine cooling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dust from being overflowed outside a cooler dust exhaust port by forming a cooler lower part duct carry-out valve and a trough type conveyor body for carrying cooler dust in one piece with a trough type conveyor cover for carrying cooler dust. SOLUTION: A trough type conveyor body 37 for carrying cooler dust is formed in one piece with a cooler lower part dust carry-out valve 20 by a trough type conveyor cover 36 for carrying cooler dust. Then, a trough type conveyor vibration device 35 for carrying cooler dust is provided at a trough type conveyor trestle 38 for carrying cooler dust, and cooler dust 28 on the trough type conveyor body 37 for carrying cooler dust is moved in one direction and is carried outside the cooler by vibration due to a vibration device 35. With this configuration, a cooler dust device is in a sealed type in one piece with a cooler dust exhaust device, thus preventing dust in a sintering dust storage hopper from leaking outside the exhaust device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sintering dust discharge device which is installed in a sintering cooler of a sintering machine and which is generated during air cooling.

[0002]

2. Description of the Related Art FIG. 2 is a schematic view showing the entire process of a general sintering machine. As shown in FIG. 2, in the sintering machine 1,
A raw material for sintering is loaded into the sintering pallet 2 from the left end of the sintering pallet 2 connected endlessly, and is ignited on a surface layer of the sintering raw material by an ignition furnace (not shown). And one pallet moves to the right side of the figure with the passage of time, and while being conveyed to the sintering machine outlet conveying device 3, firing is completed and the ore is discharged. At the time of this mining, it passes over the sieve, and when passing, the fine sinter is collected and reused as a raw material for sintering. Since the product sintered ore that has passed through the sieve has a high temperature, it is air-cooled by the sinter cooler 4 so as to reach a temperature at which it can be conveyed by a belt conveyor.

[0003] In this case, the product sinter which has rolled on the sieve in the sintering machine outlet side transfer device 3 is charged into a trough in a sintering cooler, and rotates 3/4 of the way to the sintering cooler outlet. When it reaches the position of the transfer device 7, the cooling is completed, the product is transferred to the product sintering transport conveyor 8, and transferred to the blast furnace. On the other hand, below the trough, there is a sintered cooler dust transport for collecting fine powdered sintered dust and discharging the same outside the cooler while being transported while being cooled in the cooler after loading. The apparatus 5 is installed so as to cover the entire area of the circular sinter cooler, and the sinter dust is configured to be discharged from the sinter cooler dust outlet 6.

FIG. 3 is a detailed view of an ore discharging portion of a conventional sintering cooler, FIG. 4 is a plan view of an ore discharging portion of the conventional sintering cooling device, and FIG. FIG. 4B is a sectional view taken along the line BB. As shown in FIGS. 3 and 4, the upper part of the cooler main body frame 9 constructed in a circular shape, along the guide rail 11 laid on the circular frame 9 via the trough bogie driving device 10, on the circumference. Trough truck 12 to run
Is installed. Then, a predetermined amount of sinter is sequentially supplied to the trough truck 12 from the sinter supply means via the supply tank 14, and while the trough truck 12 is traveling on the frame 9, the blower 13 sends the trough truck 12 to the trough truck 12. Cooling air is blown to the sinter from the bottom of the sinter to cool it.

[0005] The sintered ore cooled on the moving trough truck 12 is cooled while making one round along the guide rail 11, and is discharged from a waste ore tank 15 provided on the side of the supply tank 13. A pan conveyor 17 that is movable in the same manner as the locus of the trough truck 12 is installed below the mining tank 15. Reference numeral 16 denotes a trough carriage elevating rail,
Reference numeral 18 denotes a wind box, 19 denotes a chimney, and 20 denotes a cooler lower dust discharge valve having double-box airtightness.

FIG. 5 is an overall sectional view of a conventional ore cooling system generally used. Sinter 21 is a hood 22
In the state surrounded by the above, a trough truck traveling around the circumference along the guide rail laid on the circular frame via the driving device is installed on the upper portion of the frame constructed in a circular shape as described above. A predetermined amount of sinter is sequentially supplied to the trough bogie through a supply tank, and a cooling air inlet duct 25 is supplied from a blower (not shown) to the trough bogie while traveling on the frame. Cooling air is blown onto the sinter 21 from the bottom of the wind box 18 having a bottom formed in a crosspiece shape to cool the sinter 21.

In this case, among the sintered ores 21 cooled by the cooling air on the moving trough carriage, small sintered ores or powdery sintered ores are formed in the shape of the trough carriage. The small sinter or the powdery sinter falls from the bottom of the wind box 18, so that the small sinter or the powdery sinter passes through the cooler lower dust discharge valve 20 as cooler dust 27 deposited on the wind box 18 of the cooling air. It is discharged from the box 18 and discharged as cooler dust 28 discharged on a minecart 26 for transporting cooler dust. The so-called discharge transportation means is a minecart, which can move on a circular track laid directly below the dust discharge valve 20 and receives cooler dust sequentially from a plurality of wind boxes, and receives the dust on the circumference. It is configured to be discharged at a point. Reference numeral 29 denotes a cool trough, reference numeral 23 denotes a cool trough wheel, and reference numeral 24 denotes a cool trough rail.

[0008]

In the above-described trolley-type dust collection / transportation device, since the trolley serving as a tray for collecting dust is an open type, dust gradually accumulates under the trolley for transporting cooler dust. There is a problem that hinders the movement of the truck. In addition, the trucks are transported manually, which requires heavy work in the bad environment of the pit. To solve this problem, FIG.
An improved type such as the following has been proposed. That is, FIG. 6 is an overall sectional view of a conventional improved ore cooling device. As shown in this figure, the whole sinter cooling device is the same as that of FIG. 5, but is an improved sinter cooling device using a belt conveyor instead of the trolley type in FIG. However, despite the belt conveyor system, it is an open type that is basically the same as the minecart type in FIG.
The dust 32 that has leaked under the cooler dust transport belt 33 gradually accumulates, and the malfunction of the cooler dust transport belt conveyor occurs. For this reason, the cooler is stopped in the same manner as the trolley type shown in FIG. However, there is a problem that the cleaning has to be performed manually, which is very inefficient.

[0009]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have made intensive efforts, and as a result, a conventional dust receiving tray, such as a cooler dust transport trolley or a cooler dust transport belt, has been developed. Since it was a problem caused by the open type, this was solved by making it a closed type dust discharge device. Sintered dust discharge generated during air cooling installed inside the sintering cooler in the sintering machine cooling device An apparatus is provided.

The gist of the invention is that a cooler lower duct discharge valve and a cooler dust carrying trough type conveyor body in a sintering machine cooling device are integrally formed by a cooler dust carrying trough type conveyor cover, and the cooler dust is provided. A trough-type conveyor vibration device for transporting cooler dust is provided on a trough-type conveyor frame for transporting cooler dust at a lower portion of a trough-type conveyor body for transporting, and a trough for cooler dust transport is provided at a lower portion of the trough-type conveyor frame for transporting cooler dust. In addition to providing a mold conveyor spring, the eccentric motion is caused by the vibration of the vibration device,
A dust discharging device in a cooling device for a sintering machine, characterized in that while moving the cooler dust in one direction, the cooler dust is moved to a cooler dust discharge port and discharged outside the cooler.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall sectional view of a sinter cooling device according to the present invention. As shown in FIG. 1, the sinter cooled by the cooling air on the moving trough bogie has small sinters or powdery sinters formed in the cross-section of the trough bogie as described above. This small sinter or powdery sinter is dropped from the bottom of the wind box 18 through the cooler lower dust discharge valve 20 as cooler dust 27 deposited on the wind box 18 of the cooling air. And is discharged from the wind box 18 and the trough-type conveyor cover 36 for transporting cooler dust.
Is discharged as cooler dust 28 to the lower part of the trough-type conveyor body 37 for transporting cooler dust.

In this case, the cooler dust carrying trough type conveyor main body 37 is integrally formed with the cooler lower dust discharge valve 20 by the cooler dust carrying trough type conveyor cover 36, so that the cooler dust is completely discharged to the outside. There is no leakage. Further, the cooler dust carrying trough type conveyor main body is installed at the lower part on a cooler dust carrying trough type conveyor base 38, and the cooler dust carrying trough type conveyor base 38 is provided with a cooler dust carrying trough type conveyor vibration device 35. At the same time, a trough-type conveyor spring 34 for conveying the cooler dust is provided under the trough-type conveyor frame 38 for conveying the cooler dust, and the vibration of the vibrating device 35 causes the trough-type conveyor body 37 for conveying the cooler dust to move eccentrically. To move the cooler dust 28 to the cooler dust outlet and discharge the cooler dust to the outside of the cooler while moving the cooler dust in the lower part of the trough-type conveyor body 37 for transporting the cooler dust in one direction. I have.

With this configuration, compared with the conventional open-type cooler dust device, the cooler dust including the conveyor body, the conveyor gantry, the conveyor spring, and the conveyor vibrating device can be provided by the conveyor cover with the cooler lower dust discharge valve. The sealed cooler dust device with integrated discharge device prevents dust in the sintering dust storage hopper from leaking out of the discharge device, and eliminates equipment trouble due to dust accumulation due to the leak. Became.

[0014]

As described above, by adopting the dust discharging structure below the sinter cooler according to the present invention, the dust in the sintering dust storage hopper does not overflow to the outside of the cooler dust outlet, and the cooler dust is transported. Dust accumulates on a belt conveyor or the like, and the malfunction of the belt conveyor for transporting cooler dust or the trouble of stopping the cooler due to this is eliminated, and the working environment is greatly improved.

[Brief description of the drawings]

FIG. 1 is an overall sectional view of a sinter cooling device according to the present invention.

FIG. 2 is a schematic view of the entire process of a general sintering machine.

FIG. 3 is a detailed view of a mining part of a conventional sinter cooler.

FIG. 4 is a plan view of a discharge section of a conventional sintering and cooling device.

FIG. 5 is an overall sectional view of a conventional ore cooling system generally used.

FIG. 6 is an overall sectional view of a conventional improved ore cooling apparatus.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 sintering machine 2 sintering pallet 3 sintering machine exit side transfer device 4 sinter cooler 5 sinter cooler dust transfer device 6 sinter cooler dust outlet 7 sinter cooler outlet transfer device 8 product sinter transfer conveyor 9 cooler body frame DESCRIPTION OF SYMBOLS 10 Trough trolley drive device 11 Guide rail 12 Trough trolley 13 Blower 14 Supply tank 15 Discharge tank 16 Trough trolley elevating rail 17 Pan conveyor 18 Wind box 19 Chimney 20 Cooler lower dust discharge valve 21 Sinter ore 22 Hood 23 Cooler trough Wheels 24 Cooler trough rails 25 Cooling air inlet duct 26 Cooler dust transport trolley 27 Cooler dust deposited in the air box for cooling air 28 Cooler dust exhausted from transport trolleys 29 Cooler trough 30 Cooler dust transport Conveyor pulley 31 coo Conveyor pulley cradle for large dust transport 32 Leaked dust 33 Cooler dust transport belt 34 Cooler dust transport trough conveyor spring 35 Cooler dust transport trough conveyor vibrator 36 Cooler dust transport trough conveyor cover 37 Cooler dust Trough type conveyor body for transport 38 Trough type conveyor base for cooler dust transport

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Hiroshi Kon, 1 Kimitsu, Kimitsu City, Chiba Prefecture Nippon Steel Corporation Kimitsu Works (72) Inventor Shoichi Kume 1-6-6 Kaminakajo, Ibaraki City, Osaka Prefecture No. 22 Tokyo Steel Material Co., Ltd.

Claims (1)

[Claims] 1. A cooler lower duct discharge valve and a cooler dust carrying trough type conveyor body in a sintering machine cooling device are integrally formed by a cooler dust carrying trough type conveyor cover. A trough-type conveyor vibration device for transporting cooler dust is disposed on a trough-type conveyor frame for transporting cooler dust, and a trough-type conveyor spring for transporting cooler dust is provided at a lower portion of the trough-type conveyor frame for transporting cooler dust, In the sintering machine cooling device, the eccentric motion is caused by the vibration of the vibration device, and while moving the cooler dust in one direction, the cooler dust is moved to the cooler dust discharge port and discharged outside the cooler. Dust discharge device.