KR20150006977A

KR20150006977A - Roll unit for cushing coke and controlling apparatus thereof

Info

Publication number: KR20150006977A
Application number: KR20130080667A
Authority: KR
Inventors: 오한얼; 이문규; 김용진; 김영인; 박성빈; 강정찬
Original assignee: 주식회사 포스코
Priority date: 2013-07-10
Filing date: 2013-07-10
Publication date: 2015-01-20

Abstract

A roll unit for crushing coke which is improved in coke crushing efficiency and in which the roll gap can be easily controlled, and a control apparatus therefor.
The roll unit for crushing coke according to the present invention comprises: a rotating shaft; A base formed in a cylindrical shape about the rotation axis and having a sliding groove in the longitudinal direction; And a toothed liner slidably coupled to the base, the toothed liner being formed on the surface thereof with protruding lines at regular intervals in the longitudinal direction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a roll unit for crushing coke,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll unit for crushing coke and a control apparatus therefor, and more particularly, to a roll unit for crushing coke and a control apparatus therefor, which can improve crushing efficiency during crushing of coke, .

As shown in FIG. 1, generally, a sintering process includes a drum mixer 2 for mixing minute iron ore, subsidiary raw material and minute cokes, a hopper 3 connected to a lower portion of the drum mix 2 to store a sintered material, A sintering machine 6 disposed at a lower portion of the drum feeder 4 and generating an sintered light, a burner 5 disposed at one side of the drum feeder 4 for igniting the surface of the sintered bed, . And a crusher 7 located below the sintering machine 6 for crushing the sintered ores.

As described above, in the sintering process, the sintered product is mixed and humidified in the drum mixer 2 and accumulated at a constant height on the sintering machine 6. The surface is ignited by the ignition furnace 5, The calcination of the calcination compound material proceeds while being forcedly drawn to produce an sintered ore.

After the sintering is completed, the sintered ores are cooled in the cooler through the crusher 7 of the light-splitting part, and then classified into granules that are easy to charge and react in the blast furnace and are transferred to the blast furnace.

However, at the time of producing the sintered ores by the sintering process, air at room temperature is sucked from the upper portion of the sintered raw material filling layer to the surface portion corresponding to about 100 mm from the surface of the raw material filling layer accumulated in the sintered bed, The burning of the coke in the sintering raw material is terminated before heating to the temperature, so that there arises a problem such that the sintering temperature is lowered, the amount of the melt to be produced is insufficient, and the density of the raw material filling density is lowered during the sintering process, .

In order to prevent this, a solid fuel such as a sintering coke or the like is supplied to the surface layer portion in order to promote the formation of a melt in the raw material filling layer of the sintered bed in the production of the sintered bed, thereby increasing the calcining heat of the surface layer portion and the amount of the melt.

Particulate cokes corresponding to these sintering binders are managed by a 2-roll crusher for crushing larger coke of 20 mm or more and a 4-roll crusher for crushing 6-mm or more minute cokes. Normally, the design criterion of 45 t / h However, at present, only about 20 t / h of crushing efficiency can be obtained, which is problematic in terms of efficiency.

This fracture efficiency failure is caused by premature wear of the roll surface. The cracked coke is crushed by using an anthracite crusher rod mill. When the coke is mixed with anthracite coal, There is a problem that it becomes difficult.

In addition, when the roll is prematurely worn out, it requires a considerable labor for repair work, such as grinding the entire base, as well as the cost of repairs.

As shown in Figs. 2 and 3, the surface of the worn roll R is subjected to planarization through the entire grinding, and after the maintenance operation, the gap between the rolls A limit value is set by pushing the cylinder C as much as possible after inserting the plate P of about 4 to 6 mm and the fixture F is used to maintain this state, there was.

Korean Patent Laid-Open No. 10-2013-0002776 (Aug. 1, 2013) discloses a "partial coke crusher".

The present invention relates to a single-piece coke crusher for optimally crushing a single coke for use as a sintered fuel, comprising a first rolling device having two rolls for crushing the first coke by rolling, And a second rolling device having four screen rollers for crushing only the minute coke having a diameter equal to or greater than a predetermined value and crushing the minute coke filtered at the screen device, wherein the interval between the rolls of the first rolling device is

The distance between the two rolls located on the upper side of the second rolling device is 6 to 10 mm and the distance between the two rolls located on the lower side of the second rolling device is 3.1 mm to 3.9 mm.

However, even with such a minute coke crusher, there is a problem that the supply and demand of the binder is unstable, the crushing efficiency is poor, an expensive maintenance ratio is increased, and the roll surface is worn prematurely. Lt; / RTI >

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as adhering to the prior art already known to those skilled in the art.

(Prior Art 1) Korean Patent Publication No. 10-2013-0002776 (Aug. 1, 2013)

It is an object of the present invention to provide a roll unit for crushing coke and a control apparatus therefor, which can improve the crushing efficiency as well as the roll gap automatic control in order to solve such conventional problems.

In order to accomplish this object, a roll unit for crushing coke according to the present invention comprises a rotating shaft; A base formed in a cylindrical shape about the rotation axis and having a sliding groove in the longitudinal direction; And a toothed liner slidably coupled to the base, the toothed liner being formed on the surface thereof with protruding lines at regular intervals in the longitudinal direction.

And the toothed liner is slidably coupled to the base to form a cylindrical shape.

Wherein the sliding groove includes an upper sliding groove and a lower sliding groove extending downward from the upper sliding groove and having a width greater than that of the upper sliding groove, A middle liner extending upward from the lower liner and slidable with respect to the upper sliding groove, a middle liner extending from the upper end of the middle liner and having a width greater than that of the middle liner, And a top liner.

The upper liner has an upper seating step formed on one side of the upper liner and a lower seating step formed on the lower side of the upper liner.

In order to achieve the above object, according to the present invention, there is provided a control apparatus for a roll unit for crushing coke comprising a rotating shaft, a base formed in a cylindrical shape around the rotating shaft and having a sliding groove in the longitudinal direction, A roll unit for crushing coke comprising a toot liner formed with protruding lines in a longitudinal direction at regular intervals; A distance sensor for sensing a distance between a pair of said coke crushing roll units arranged side by side so that the coke can be crushed; A piston cylinder having one end coupled to the coke crushing unit; A pump for supplying oil to the piston cylinder; And a control unit for receiving a signal related to an interval between the distance sensor and the roll unit for crushing coke, and transmitting an oil supply signal to the pump.

And a distance signal detector for receiving a signal sensed by the distance sensor, wherein the distance signal sensor transmits a distance signal to the control unit.

The roll unit for crushing coke is characterized in that one pair is arranged in the horizontal direction and another pair is arranged in the lower position corresponding thereto.

The present invention has various effects as described below due to the technical structure described above.

First, there is an advantage that the amount of the minute coke required when the sintering operation is performed can be stably supplied at the first time.

Secondly, the crushing efficiency is improved, and it is possible to prevent the minute coke from being returned to the relay bin.

Third, there is an advantage that the maintenance cost can be reduced and the maintenance time can be shortened.

Fourth, there is an advantage that early wear of the roll surface can be prevented.

FIG. 1 is a conceptual view showing a general sintered-ore producing method and apparatus,
2 is a view showing a surface of a roll on which surface abrasion has conventionally progressed,
FIG. 3 is a view illustrating a process of adjusting a gap between rolls after a conventional maintenance operation,
4 is a view showing a roll unit for crushing coke of the present invention,
FIG. 5 is a view showing one embodiment of the present invention,
6 is a side view and a combined state view of the roll unit for crushing coke according to the present invention,
7 is a view showing a roll unit control apparatus for crushing coke according to the present invention,
Fig. 8 is a view showing a state in which a coke crushing operation is carried out by using the roll unit for crushing coke of the present invention.

Hereinafter, a roll unit for crushing coke and a control apparatus therefor according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in Figs. 4 and 5, the roll unit for crushing coke of the present invention includes a rotating shaft 12, a base 14, and a tooth liner 16.

A rotating shaft 12 is provided through the base 14 at the center of the base 14 and the base 14 is rotated in one direction around the rotating shaft 12. The base 14 is provided with a tooth- (16) are slidingly coupled.

A plurality of protruding lines 16d are formed on the surface of the toot liner 16 in the longitudinal direction. These protruding lines 16d are formed at a predetermined interval in the circumferential direction of the toot liner 16.

By forming the projecting line 16d, it is possible to prevent the slip of the coke when crushing the coke, and to improve the crushing efficiency.

The base 14 is preferably formed in a cylindrical shape and the base 14 is preferably formed with a sliding groove 14a so that the toothed liner 16 can be slidably engaged with the base 14.

It is preferable that a plurality of the sliding grooves 14a are formed at regular intervals in the circumferential direction of the base 14 and that the number of the toothed liner 16 is also the same as the number of the sliding grooves 14a .

A plurality of toothed liners 16 are slidably engaged with the sliding grooves 14a formed in the base 14 to finally form a cylindrical shape and the surfaces of the base 14 are covered with the toot liner 16 .

It is possible to reduce the replacement time and cost in the roll wear by manufacturing the toothed liner 16 as a split type so that the toothed liner 16 can be slidably coupled to the base 14 by section.

As shown in FIGS. 5 and 6, the sliding groove 14a preferably includes an upper sliding groove 14b and a lower sliding groove 14c.

The lower sliding groove 14c extends downward from the lower end of the upper sliding groove 14b and is preferably formed to have a width greater than that of the upper sliding groove 14b. A middle liner 16b and an upper liner 16a so as to be compatible with the upper liner 16b.

The lower liner 16c is slidably engaged with the lower sliding groove 14c and the middle liner 16b is slid in the upper sliding groove 14b so that the width of the middle liner 16b is greater than the width of the lower liner 16c .

The upper liner 16a extends from the upper end of the middle, and the width of the upper liner 16a is larger than that of the middle liner. On the surface of the upper liner 16a, a projecting line 16d is repeatedly formed.

The top liner 16a and the bottom liner 16c are formed to have a predetermined curvature.

The curvature of the upper liner 16a is formed more gently than the curvature of the lower liner 16c.

On the other hand, it is preferable that an upper seating step 16a-1 is formed on one side surface of the upper liner 16a and a lower seating step 16a-2 is formed on the other side lower surface.

A plurality of tooth liner 16 are continuously formed in the circumferential direction of the base 14, and eventually have a cylindrical shape. The gap between adjacent tooth liner 16 does not occur, and dust is intruded An upper seating step 16a-1 and a lower seating step 16a-2 are formed so as to prevent the upper seating step 16a-1 and the lower seating step 16a-2.

That is, any one of the upper seating lugs 16a-1 of the toot liner 16 adjacent to each other is tightly coupled to the other lower seating lug 16a-2, thereby improving adhesion and preventing dust intrusion.

7, the roll unit control apparatus for crushing coke according to the present invention is for automatically adjusting the interval of the roll unit 10 for crushing coke. The roll unit 10 for crushing coke, the distance sensor 20, A piston cylinder 30, a pump 40, and a control unit 50. As shown in Fig.

The roll unit 10 for crushing coke includes a rotating shaft 12, a base 14 and a toothed liner 16, and the description thereof is omitted.

In order to break the coke, roll units 10 for crushing coke are arranged side by side so as to form a pair of roll units 10 for crushing coke. The coke is crushed to the desired particle size.

The distance sensor 20 senses the distance between the coke oven roll units.

The distance between the coke oven roll units sensed by the distance sensor 20 is transmitted to the control unit 50 through the distance signal detector 60.

The control unit 50 receives information on the distance between the roll sensor 10 and the distance sensor 20 and transmits the oil supply / release signal to the pump 40.

The pump 40 functions to supply oil to the piston cylinder 30 having one end connected to the coke crushing unit or to adsorb the oil from the piston cylinder 30. [

When the oil is supplied to the piston cylinder 30, the stroke value of the piston cylinder 30 increases, the interval between the roll units 10 for crushing the coke is reduced, and when the oil is discharged from the piston cylinder 30, 30 decreases and the interval between roll units 10 for crushing coke increases.

As shown in Fig. 8, when crushing the coke using the roll unit for crushing coke of the present invention, generation of coke slip is prevented by the suction action of the projecting line 16d, whereby improved crushing efficiency is obtained.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

10: Roll unit for crushing coke
12: rotating shaft 14: base
14a: a sliding groove 14b: an upper sliding groove
14c: lower sliding groove 16: toothed liner
16a: upper liner 16a-1: upper seating jaw
16a-2: Lower seating jaw 16b: Middle liner
16c: lower liner 16d: protruding line
20: Distance sensor 30: Piston cylinder
40: pump 50:
60: Distance Signal Detector

Claims

A rotating shaft;
A base formed in a cylindrical shape about the rotation axis and having a sliding groove in the longitudinal direction; And
And a toothed liner slidably coupled to the base, the toothed liner being formed on the surface of the toothed liner at predetermined intervals in the longitudinal direction.

The method according to claim 1,
And a plurality of toothed liners are slidably coupled to the base to form a cylindrical shape.

The method of claim 2,
Wherein the sliding groove includes an upper sliding groove and a lower sliding groove extending downward from the upper sliding groove and having a width larger than that of the upper sliding groove,
Wherein the toothed liner comprises: a lower liner inserted into the lower sliding groove; a middle liner extending upward from the lower liner and sliding into the upper sliding groove; and a middle liner extending from the upper end of the middle liner, Wherein the upper liner is formed larger than the liner, and the surface of the upper liner is formed with the projecting line.

The method of claim 3,
Wherein an upper seating step is formed on one side of the upper liner and a lower seating step is formed on the other side of the upper liner.

And a toothed liner slidably coupled to the base, the toothed liner being formed on the surface of the toothed liner at a predetermined interval in the longitudinal direction, Roll unit;
A distance sensor for sensing a distance between a pair of said coke crushing roll units arranged side by side so that the coke can be crushed;
A piston cylinder having one end coupled to the coke crushing unit;
A pump for supplying oil to the piston cylinder; And
And a control unit which receives a signal relating to an interval between the rollers for coke crushing from the distance sensor and transmits an oil supply signal to the pump.

The method of claim 5,
Further comprising a distance signal sensor for receiving a signal sensed by the distance sensor, wherein the distance signal sensor transmits a distance signal to the control unit.

The method of claim 5,
Wherein the roll unit for crushing coke is arranged in a pair in the horizontal direction and another pair is arranged in the lower position corresponding thereto.

The method of claim 7,
Wherein the sliding groove includes an upper sliding groove and a lower sliding groove extending downward from the upper sliding groove and having a width larger than that of the upper sliding groove,
Wherein the toothed liner comprises: a lower liner inserted into the lower sliding groove; a middle liner extending upward from the lower liner and sliding into the upper sliding groove; and a middle liner extending from the upper end of the middle liner, Wherein the upper liner is formed larger than the liner, and the surface of the upper liner is formed with the projecting line.

The method of claim 8,
Wherein an upper seating step is formed on one side of the upper liner and a lower seating step is formed on the lower side of the upper liner.