KR20040006072A - A coke screen capable of preventing grizzly being clogged - Google Patents

Abstract

PURPOSE: A coke screen for grizzly is provided to prevent a coke from getting caught between two grizzlies, and thus to improve a screen efficiency. CONSTITUTION: The coke screen for grizzly includes a screen case(2) that oscillates by a oscillator; many fixed grizzlies(3) attached to the screen case(2) and primarily screening a coke when oscillating with the screen case(2); a punch plate disposed below the fixed grizzlies(3) and secondarily screening the primarily screened coke; an oscillating grizzly(10) attached to an oscillating bar(11) to be sandwiched between the fixed grizzlies(3); and elastic members(13) installed at both ends of the oscillating bar(11) and oscillating the elastic bar(11) in the vertical direction. The elastic members(13) are fastened on a lower case(14) that is supported by a bracket(15).

Description

A coke screen capable of preventing grizzly being clogged}

The present invention relates to a coke screen, and more particularly, to a coke screen for preventing the coke stuck between the grizzly in the process of screening the coke.

In general, the coke screen (coke screen) is a device that can adjust the particle size of the coke (coke) charged in the blast furnace, as shown in Figure 1, the screen case 102, fixed grizzly 103, vibrator 104, etc. Consists of

The screen case 102 is supported by a spring 106 on the fixed plate 107, and an unbalanced weight vibrator 104 is installed on the screen case 102 to generate vibration by the motor 105. do. A bar holder (not shown) is installed on the inner surface of the screen case 102 so that a plurality of grizzly 103 may be attached at regular intervals. Below the grizzly 103 is a punch plate 108 having a plurality of holes formed therein.

Therefore, as the coke flows into the coke screen 101 configured as described above, the motor 105 of the vibrator 104 installed on the screen case 102 is operated. The gear connected to the shaft is rotated by the rotational force transmitted from the motor 105 to generate vibration in the vibrator 104. The vibration generated as described above causes the screen case 102 to vibrate by vibrating the spring 106 supported by the fixing plate 107.

As the screen case 102 vibrates, the grizzly 103 fixed to the screen case 102 moves up and down, so that small particles of coke introduced into the coke screen 101 pass through the grizzly 103. The small particles of coke screened first in the Grizzly bar 103 are secondary screened in the punch plate 108. The coke of the appropriate particle size screened in the coke screen 101 is sent to the blast furnace to be used.

However, in such a screen process, the coke is caught between the grizzly 103 to be clogged, which causes a problem that the screen efficiency is lowered and the ventilation in the blast furnace is worsened. In addition, if the coke is clogged between the grizzly 103 so that the worker has to clean directly using a hammer and round bar, the work takes a long time due to this operation, there was also a problem causing a safety disaster.

The present invention has been proposed to solve the above problems, and an object thereof is to prevent coke stuck between grizzlies.

1 is a perspective view showing a conventional coke screen.

2 is a perspective view of a coke screen according to the present invention;

3 is an exploded perspective view of the vibrating grizzly of FIG. 2;

Figure 4 is a plan view showing a state in which the present invention is applied.

* Description of the symbols for the main parts of the drawings *

1: coke screen 2: screen case

3: fixed grizzly 4: vibrator

5: motor 6: spring

7: fixed plate 8: punch plate

9: Fixture 10: Vibration Grizzly

11: shake table 12, 14: upper, lower case

13 elastic member 15 bracket

In order to achieve the above object, the present invention provides a screen case that is vibrated by a vibrator, a fixed grizzly that is attached to the screen case and is attached to the screen case and vibrates with the screen case primarily, and fixed grizzly 1 A coke screen including a punch plate for secondary screening coke screened by a car, comprising: a vibrating grizzly attached to a vibrating table so as to be positioned between each of the fixed grizzlies, and installed on both ends of the vibrating table to raise and lower the vibrating table by vibration of the screen case. It provides a coke screen capable of preventing the grizzly clogging, characterized in that it comprises an oscillating elastic member.

Hereinafter, a coke screen capable of preventing clogging of a grizzly according to the present invention will be described in detail with reference to the accompanying drawings.

The coke screen 1 of the present invention includes a screen case 2, a fixed grizzly 3, a vibrator 4, a vibrating grizzly 10, and the like, as shown in FIGS. 2 and 3. The screen case 2 is supported by a spring 6 on the fixed plate 7, and a vibrator 4 is installed on the top. The vibrator 4 is of an unbalanced weight type and vibration is generated by the motor 5.

A fixing stand 9 is installed on the inner side of the screen case 2. A plurality of fixing grizzlies 3 are attached to the fixing stand 9 at regular intervals to screen the coke entering the coke screen 1 primarily. Between each of the fixed grizzly 3, a vibrating grizzly 10 is installed.

Here, as shown in FIG. 3, the vibration grizzly 10 is provided on the upper surface of the shaking table 11 at a predetermined interval, and the upper case 12 is formed on both sides of the shaking table 11. The upper part of the elastic member 13 is fixedly installed in the upper case 12. The lower portion of the elastic member 13 is fixed to the lower case 14, the lower case 14 is supported by the bracket 15, the bracket 15 is attached to the inner surface of the screen case (2) .

The punch plate 8 is installed below the fixed grizzly 3 and the vibrating grizzly 10 thus installed. The punch plate 8 is a plate having several holes, and serves to secondary screen the coke screened first in the grizzly 3 and 10.

If the vibrating grizzly 10 is installed in the manner of being installed between the fixed grizzly 3, it becomes like FIG.

Referring to the operation of the coke screen according to the present invention configured as described above are as follows.

Coke is cut out from the coke bin, which is a coke reservoir, and flows into the coke screen 1. At this time, when the motor 5 of the vibrator 4 installed on the screen case 2 is operated, the rotational force transmitted from the motor 5 rotates the gear connected to the shaft so that the vibration from the vibrator 4 is caused by the unbalance weight. Is generated. The vibration generated as described above causes the screen case 2 to vibrate by vibrating the spring 6 supported on the fixed plate 7.

As the screen case 2 vibrates, the fixed grizzly 3 fixed to the screen case 2 vibrates up and down. In addition, the elastic member 13 vibrates by the vibration of the screen case 2, and the vibration grizzly 10 attached to the shaking table 11 moves up and down while the shaking table 11 vibrates due to the vibration of the elastic member 13. Will vibrate. While the fixed grizzly 3 vibrates at the same time, the vibrating grizzly 10 vibrates up and down between the fixed grizzly 3 to prevent coke from being clogged between the fixed grizzly 3 and the vibrating grizzly 10 while the particles are large. Screen the coke.

Small particles of coke screened primary in the grizzly 3, 10 are secondary screened in the punch plate 8. Coke of appropriate particle size screened in this way is sent to blast furnace and used.

As described above, according to the coke screen capable of preventing clogging of the grizzly of the present invention, a spring vibration type second grizzly is installed between the first grizzly fixedly installed on the unbalance weight screen, thereby using the up and down kinetic energy of the unbalance weight screen. Secondary vertical motion caused by unbalanced weight vibration between the fixed and installed primary grizzly is to remove the coke sandwiched between the grizzly to prevent clogging of the grizzly, thereby improving screen efficiency.

Claims (1)

A plurality of screen cases (2) vibrated by the vibrator (4), a fixed grizzly (3) attached to the screen case (2) to vibrate with the screen case (2), and screening coke primarily; A coke screen comprising a punch plate (8) installed below a fixed grizzly (3) and screening a coke screened on a secondary screen, wherein A vibrating grizzly (10) attached to the shake table (11) to be positioned between each of the fixed grizzlies (3); A coke screen capable of preventing clogging of the grizzly, which is provided at both ends of the shaking table (11) and includes an elastic member (13) which vibrates the shaking table (11) by the vibration of the screen case (2).