KR20020050963A - screen powder accumulation prevention apparatus - Google Patents

Abstract

The present invention relates to an apparatus for removing clogging of the screen by accumulating spectroscopic stones on the primary screen by the minute ore of the powder pellet, the screen connection male screw 12 is connected to the primary screen fixing portion 10 The steam pipe 13 is connected with the quick joint 12A to connect each end of the primary screen 1, and the primary screen end 8 and the rear end liner 7 are connected to the collecting pipe to form the rear liner 7 ) Inside the liner steam jacket (16) through the drying steam through the operation of the primary screen drying device and the operation knob 44 to dry the ore, the shaft 30 is reversely rotated with the interval adjustment fixed shaft 38, In addition, the shaft 30 has two fixed intervals of the fixed shaft 38, the through-flow 42 is attached to the clearance shaft 36 of the cleaning device to the interval adjustment flow shaft 36 and the through-hole 42 ) Through the primary adjustment pin (34) and the secondary adjustment pin (35) to remove the gap adjustment flow shaft (36) As the screen cleaning device and the screen drying device are formed, cumulative powder is generated in the lower part of the basis weight hopper in the process of cutting out the whole amount of ingot pellets and powder pellets. It eliminates the waste, and the entire amount of powder pellet is charged to the blast furnace, thus preventing the air permeability disorders from adversely affecting the yellowing management and improving the final quality of production.

Description

Screen powder accumulation prevention apparatus

The present invention relates to an apparatus for removing clogging of the screen by spectroscopy accumulating on the primary screen by the minute ore of the powder pellet, in particular, because the minute ore of the powder pellet is accumulated in the primary screen As the primary screen is blocked, the total amount of spectroscopy is cut out, and cumulative powder is generated in each beet conveyor head chute and basis weight hopper in the post-process.The mixing phenomenon and powder pellets are charged into the blast furnace, resulting in impaired breathability in the furnace. The present invention relates to a screen dust accumulation preventing device which removes and removes powder from powder pellets when the powder pellets are cut.

In general, powder pellets used in the blast furnace is used as fuel of the product, powder pellet cutting equipment is used to remove the spectroscopic ore contained in the powder pellet ore to use only the pellets of the primary screen of the cutting device of Figure 1 In (1), the ingot pellets are cut out, and in the secondary screen (1-1), the ingot pellets contained in the ore discharged from the primary screen (1) are separated from the ore particles into the secondary ore.

The ingot pellets cut out from the primary screen (1) and the secondary screen (1-1) in which the ingot pellets are weighed in the basis weight hopper (4) are transported to each transport belt conveyor and used in the blast furnace, but the primary screen ( In 1), cumulative powders (14) are generated by water generated in the process of sprinkling the ore and powdered ferrets contained in the powdered pellets to collect the spectroscopy (dust dust) generated during the transport of the whole process. Each outlet of the primary screen 1 is blocked.

Due to the excessive accumulation of the cumulative powder (14), the primary screen (1) is partially accumulated in the basis weight hopper (4) the total amount of spectroscopy and ingot pellets at the time of pellet pellet cutting and a large amount of cumulative powder (14) ), Clogging of the discharge chute of the basis weight hopper (4) occurs, the head chute of the belt conveyor that transports the minute pellets is blocked, and equipment operation is impossible, and when the basis weight of the minute pellets is weighed, Since the basis weight in the basis weight hopper (4) is charged into the blast furnace, the charge of spectroscopic stones into the furnace caused a breathing disorder, that is, a condition that adversely affects the yellowing management caused by the wall side of the furnace, there is a problem that the quality of the product is inferior.

Therefore, the present invention was devised to solve the above-mentioned problems, and after removing the water and spectroscopy contained in the powder pellets from the primary screen and cutting out only the pellets into the basis weight hopper, the blast furnace was transported to each transport belt conveyor. Its purpose is to use it in.

1 is a perspective view of a conventional primary screen.

Figure 2 is an exploded view of the fixing unit of the drying apparatus of the primary screen applied to the present invention.

Figure 3 is a partial cutaway view of the liner drying apparatus of the primary screen applied to the present invention.

Figure 4 is a front view of the cleaning device of the primary screen applied to the present invention.

5 is a state diagram of use of the screen dust accumulation preventing device applied to the present invention.

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

15: collecting pipe 16: liner steam jacket 34: primary adjustment pin

35: secondary adjustment pin 36: gap adjustment flow shaft 38: cleaning device branch pipe shaft

42: penetrator 45: drive arm

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

An embodiment of the screen dust accumulation prevention apparatus of the present invention,

The screen connection male screw 12 is connected to the primary screen fixing part 10, and each end of the primary screen 1 is connected by connecting the steam pipe 13 with the quick joint 12A, and the primary screen end ( 8) and the rear end liner (7) is connected to the collecting pipe and the inside of the rear liner (7) of the primary screen drying device and operation knob 44 to dry the ore by passing the drying steam into the liner steam jacket (16) In operation, the shaft 30 rotates inversely with the spaced fixed shaft 38, and the shaft 30 has two spaced fixed shafts 38, and the spaced flow shaft 36 has several cleaning device tubes. The penetrator 42 is attached to the shaft 36 and adjusts the depth of penetration of the penetrator 42, and the primary adjusting pin 34 and the secondary adjusting pin (34) which remove the gap adjusting flow shaft 36 ( It is preferable that the screen cleaning device and the screen drying device composed of 35) are provided.

Figure 2 is an exploded view of the drying device fixing portion of the primary screen applied to the present invention, Figure 3 is a partial cutaway view of the liner drying device of the primary screen applied to the present invention, Figure 4 is a primary applied to the present invention 5 is a front view of the screen cleaning apparatus, and FIG. 5 is a state diagram of a screen accumulation prevention device applied to the present invention.

The screen connection male screw 12 is connected to the primary screen fixing part 10, and each end of the primary screen 1 is connected by connecting the steam pipe 13 with the quick joint 12A, and the primary screen end ( 8) and the rear end liner (7) is connected to the collecting pipe and the inside of the rear liner (7) of the primary screen drying device and operation knob 44 to dry the ore by passing the drying steam into the liner steam jacket (16) In operation, the shaft 30 rotates inversely with the spaced fixed shaft 38, and the shaft 30 has two spaced fixed shafts 38, and the spaced flow shaft 36 has several cleaning device tubes. The penetrator 42 is attached to the shaft 36 and adjusts the depth of penetration of the penetrator 42, and the primary adjusting pin 34 and the secondary adjusting pin (34) which remove the gap adjusting flow shaft 36 ( Screen dust accumulation device which is equipped with screen cleaning device and screen drying device composed of 35)

As shown in FIG. 2, there is a tube in which drying steam stays inside the steam jacket 1B, and the inlet pipe 9 is connected to the steam jacket 1B to be a passage for steam, and the first screen fixing part ( 10) has a screen connection female screw 11 in the center portion is connected to the screen connection male screw 12, the screen body 14 is separated from the primary screen fixing portion 10 and bolted.

The screen body 14 is grooved such that the screen connection male screw 12 is connected to the screen connection female screw 11, and the primary screen first stage 8A and the primary screen second stage 8B are steam pipes 13 The steam pipe 13 is connected to the steam pipe 13, and the steam pipe 13 is connected to the quick joint 12A by a screw method, and the quick joint 12A is connected to the screen connection male screw 12.

In addition, steam flows from the primary screen 1st stage 8A to the primary screen end 8 and the rear end liner 7, and the steam enters the primary screen 1st stage 8A inlet side. When the primary screen 1st stage 8A exit side and the primary screen 2nd stage 8B inlet side are connected, the primary screen 2nd stage 8B exit side and the primary screen 3rd stage 8C inlet side are connected. The outlet side up to the primary screen end 8 and the liner 7 is connected to the inlet side of the next stage.

The heat of steam introduced into the steam jacket 1B is transferred to the screen bar support 1D, and heat is transmitted to the screen bar 1A. A high temperature is formed around the screen bar 1A by the introduction of steam. Moisture contained in the powder pellet in the primary screen 1 is completely evaporated by drying, and the spectroscopic stones are discharged into the powder chute through the secondary screen 1-1.

Only ingot pellets from which the spectroscopic stones were removed from the primary screen 1 and the secondary screen 1-1 were weighed in the basis weight hopper 4 and stuck in the screen bar 1A of the primary screen 1. When the outlet of the primary screen 1 is clogged due to a large amount of pellets, the screen cleaning device of FIG. 4 is used, and this screen cleaning device is used to remove the ingot pellets sandwiched between the screen bar 1A and the screen bar 1A. There is a through pin 42 to be removed, and the through pin 42 is fixed to the end of the cleaning device branch pipe shaft 39 with the fixing washer 40, and the cleaning device branch pipe shaft 39 and the branch pipe shaft fixing bolt 41. The connection is fixed.

Several of the cleaning device branch pipe shaft 39 with the through pin 42 is connected to one interval adjustment flow shaft 36 to operate simultaneously, the gap adjustment flow shaft 36 is the interval adjustment fixed shaft 38 It is connected to and configured to allow distance adjustment.

The gap between the gap adjustment flow shaft 36 and the gap adjustment fixed shaft 38 is adjusted by the primary adjustment pin 34 and the secondary adjustment pin 35, and the gap adjustment fixed shaft 38 is spaced therein. The inside is penetrated to allow the flow shaft 36 to enter, and the gap adjustment flow shaft 36 may connect and fix the gap adjustment shaft 38 with the primary adjustment pin 34 and the secondary adjustment pin 35. There are several adjustment tools 37 to make it.

In the first screen 1 stage 8A and each stage of the primary screen 1, two spacing fixed shafts 38 are connected to one shaft 30, and the spacing fixed shafts 38 and the shafts ( The connection portion of the 30 has a bearing 43 therein, the stopper 31 is installed to prevent the separation of the fixed interval shaft 38 is fixed on both sides.

In addition, as shown in FIG. 4, it is connected to one drive arm 45 to operate the drive arm 45 with the operation knob 44, and the several axes 30 by the operation of the drive arm 45. Is moved, the screen is moved to the first screen 2nd stage (8B) after cleaning in the first screen (8A) and the screen is moved to the 4th stage (8D) of the primary screen after cleaning in the third screen (8C) The use of a drying device and a screen cleaning device is adapted to cut out only the ingot pellets extracted with moisture and spectroscopy contained in the powdered ferrets.

Hereinafter, the operation will be described.

The flour pellet, one of the kinds used as raw materials in the blast furnace, is discharged through the empty gate (6) of the powder pellet storage bin (5). A screen is installed below the storage bin 5 to operate the vibrator 3 by the start of the vibration motor 2.

The screen vibrates by the operation of the vibrator 3 to cut the powder pellet into the basis weight hopper 4, and the screen is provided with a primary screen 1 and a secondary screen 1-1. In 1), the process of drying the ore by introducing steam is as follows.

Steam is supplied to the steam jacket (1B) and the steam through the screen drying steam inlet (S1), heat is transferred to the screen bar (1A) through the screen bar support (1D) by the heat of the supplied steam. The moisture contained in the powder pellet at the top of the screen bar 1A is dried by evaporation by hot air.

Spectroscopy in the minute pallet falls to the secondary screen 1-1 through the outlet of the primary screen 1, and is separated from the primary screen 1 through the outlet in the secondary screen 1-1. By separating a small amount of ingot pellets contained in ore from the ore, the ore is discharged through the min chute.

The ingot pellets separated from the secondary screen 1-1 are cut out and weighed in the unloading hopper 4 together with the ingot pellets separated from the primary screen 1, and charged into the blast furnace by each transport belt conveyor. Drying steam introduced through the screen drying steam inlet side S1 at the inlet side of the first stage 8A of the primary screen 1 and the pipe is supplied to the steam jacket 1B. .

The steam supplied to the steam jacket 1B is introduced into the steam jacket 1B of the screen second stage 8B through the steam pipe 13 via the quick joint 12A at the outlet side of the first stage 8A of the screen. Then, the drying steam introduced into the steam jacket 1B of the second screen 8B is sheared to the screen bar 1A through the screen bar support 1D of the second screen 8B.

In addition, the process of drying the powder pellet by removing the moisture contained in the surrounding powder pellet, the drying steam supplied to the steam jacket 1B of the screen 2 stage (8B) is again screen 2 stage (8B) Quick joint 12A of screen 3 stage 8C via a steam pipe 13 connecting the outlet side of screen 2 stage 8B and the inlet side of screen 3 stage 8C via the outlet side quick joint 12A of ) Is supplied to the steam jacket 1B of the screen 3 stage 8C.

Through this process, the rear liner as shown in FIG. 3 through a collecting pipe connected to the quick joint 12A on the inlet side of the rear liner 7 through the outlet quick joint 12A of the primary screen end 8. Drying steam is supplied to the liner steam jacket 16 in the inside of (7).

The rear liner 7 is heated to dry the powder pellets on the rear liner 7, and the drying steam is discharged to the trap 18 through the liner steam jacket 16 outlet side discharge pipe 17. Discharged.

The screen drying apparatus shown in FIG. 4 is constituted separately from the drying apparatus of the primary screen 1, and the screen cleaning apparatus includes a screen bar 1A having powdered pellets and ingot pellets dried in the drying apparatus of the primary screen. And a screen cleaning device for removing the pellets sandwiched between the screen bar 1A and the screen bar 1A and the ore sandwiched between the screen bar 1A and the screen bar 1A using the penetrator 42. The device penetrates between screen bars 1A.

It is operated by a handle and the driving arm 45 is moved, and the shaft 30 is rotated inversely with the interval adjusting fixed shaft 38 by the movement of the driving arm 45, and the interval is adjusted with the shaft 30. The connecting portion of the fixed shaft 38 improves the kinetic force of the reverse rotation by the bearing 43.

One shaft 30 for removing the ore between the screen bar 1A and the screen bar 1A by the continuous operation of the gap adjusting fixed shaft 38 and the gap adjusting flow shaft 36 and the penetrator 42. ), There are two spacing fixed shafts 38.

In addition, each of the spaced fixed shaft 38 is provided with a spaced flow shaft 36 and a plurality of penetrators 42 to ore sandwiched in the screen bar 1A of the primary screen 1 belonging to each stage. It can be removed at a time, and the operation handle 44 is connected to the drive arm 45 by a plurality of shafts 30 to remove ore sandwiched between the screen bars 1A of many places by a single operation of the operation handle 44. can do.

In addition, when the penetrating operation of odd-numbered stages such as the first stage 8A and the third stage 8C of the screen is completed, the second stage 8B and the fourth stage 8D of the screen by one operation of the operation knob 44 are completed. The ore stuck to the screen bar 1A and the screen bar 1A of the even-numbered stage primary screen 1 can be removed and cleaned.

The penetrating depth of the penetrator 42 is adjusted between the screen bar 1A and the screen bar 1A, and the penetrator 42 is used to secure a working space during the maintenance work of the primary screen 1. As a device capable of removing the gap and adjusting the flow shaft 36, the primary adjusting pin 34 and the secondary adjusting pin 35 can adjust the gap using a plurality of adjusting holes 37. It is possible.

As described above, according to the present invention, cumulative powder is generated in the lower portion of the basis weight hopper in the process of cutting out the total amount of ingot pellets and powder pellets, thereby preventing the chute from being clogged and delaying charging to the blast furnace, thereby reducing the charging level. In addition, since the entire amount of pellets is charged to the blast furnace, it is possible to prevent the impairment of ventilation in the furnace caused by the impairment of the furnace management and to improve the production quality of the final shipment.

Claims (1)

The screen connection male screw 12 is connected to the primary screen fixing part 10, and each end of the primary screen 1 is connected by connecting the steam pipe 13 with the quick joint 12A, and the primary screen end ( 8) and the rear end liner (7) is connected to the collecting pipe and the inside of the rear liner (7) of the primary screen drying device and operation knob 44 to dry the ore by passing the drying steam into the liner steam jacket (16) In operation, the shaft 30 rotates inversely with the spaced fixed shaft 38, and the shaft 30 has two spaced fixed shafts 38, and the spaced flow shaft 36 has several cleaning device tubes. The penetrator 42 is attached to the shaft 36 and adjusts the depth of penetration of the penetrator 42, and the primary adjusting pin 34 and the secondary adjusting pin (34) which remove the gap adjusting flow shaft 36 ( Screen dust accumulation prevention device which is provided with the screen cleaning apparatus and the screen drying apparatus which consist of 35).