KR20090021550A

KR20090021550A - Slide type sealing apparatus of sinter pallet

Info

Publication number: KR20090021550A
Application number: KR1020070086152A
Authority: KR
Inventors: 백광일
Original assignee: 동양주공주식회사
Priority date: 2007-08-27
Filing date: 2007-08-27
Publication date: 2009-03-04

Abstract

A slide sealing device of a sinter cart is provided to maximize the sealing effect by blocking the dust to flow between a seal bar and seal cover. A slide sealing device of sinter cart(100) comprises a seal cover(200) fixed to a buggy frame lower end surface of a sinter cart inside; a seal bar(300) including a jaw(600) inserted in the seal cover and contacted to a sliding rail; and a dust protection plate(500) including a spring(400) sealing a gap between the inner wall of the seal cover and the seal bar.

Description

SLIDE TYPE SEALING APPARATUS OF SINTER PALLET}

The present invention relates to a slide-type sealing device of a sintered bogie, and more particularly, to improve the sealing effect by blocking the dust generated when discharging the sintered raw material through both ends of the seal bar to maximize the sealing effect It relates to a slide type sealing device.

In general, in the blast furnace operation of the steel mill, the loading of the ferrous iron ore directly into the blast furnace will reduce the output amount due to the slack in the flow of reducing gas in the blast furnace.

Therefore, when the blast furnace operation, such a wrought iron ore is agglomerated to a size of about 5 to 50 mm to secure a smooth flow of reducing gas, and a sintered ore that facilitates blast furnace charging is used.

The sintered ore is produced through a continuous suction sintering machine of the Dwight-Lyoid type having a sintering bogie moving down the track orbit, such as a downward suction sintering plant.

For example, as shown in FIG. 1, the sintered raw material in which the iron-iron ore and the subsidiary material and the powdered coke are mixed together are sequentially loaded into a plurality of sintered bogies 10 moving along the track, and charged by an ignition device. When the surface layer of the sintered raw material is ignited, the main blower 20, which is a large aspirator, sucks air from the top of the sinter bogie 10 passing through the effective suction area and proceeds the combustion reaction of the powdered coke. The sintered raw material is manufactured by sintered ore.

At this time, the sealing means 40 is provided on both sides of the lower surface of the sintered trolley 10, that is, the lower end surface of the trolley frame 12, which is the inside of the traveling wheel 30, as shown in FIG. 2. The sintered trolley 10 is moved while maintaining the state in close contact with the sliding rail 50 installed at the lower side thereof, so that a leakage air is not generated when the main blower 20 is sucked.

However, in the conventional sealing means 40, as shown in (a) and (b) of FIG. 3, the length of the seal bar 34 is longer than that of the seal cover 32, that is, the length of the sintered cart 10, that is, the seal cover 32. Since only two half of the length is required to use the two seal bars 34, the inflow of dust occurs between the gaps ⓐ, and the sintering efficiency is lowered due to the pressure reduction during suction. Since only two springs 36 are installed in the seal bar 34, the load distribution is not sufficient, and the overload acts, which shortens the life of the spring 36 and increases the wear of the seal bar 34. In addition, when the phenomenon in which the elastic modulus of any one of the springs 36 is rapidly lowered does not perform the sealing function, inefficient problems such as inevitably need to replace the whole are caused.

In addition, since the seal bar 34 has a short length as described above, the seal bar 34 needs to have at least two pieces per sintering cart 10, thereby increasing the number of necessary parts, resulting in excessive inconvenience and maintenance time due to maintenance and repair. Is also causing problems.

In addition, the seal bar 34 is coupled to the seal cover 32 so as to be able to flow up and down by a spring 36, but since the seal bar 32 is simply fitted, the dust generated during sintered ore transfer through the gap ⓑ between the seals is sealed. As the cover 34 is introduced into and adhered to the cover 34, the elastic force of the spring 36 is lowered to cause a sealing failure.

Furthermore, since the front and rear surfaces of the seal cover 32 are maintained in a completely open state as shown in FIG. 3 (a), the excessive dust flows into the seal cover 32 through the open gap ⓒ as described above. In addition to accelerating the problems, as well as the grease that is supplied for the smoothness of the flow bumps into the problem is also causing problems.

For this improvement, the applicant has applied for a solution to this problem by patent application No. 10-2007-41916.

By the way, when the empty truck is rotated after the sintered light is rotated, the excessively generated dust is concentrated at the point where the seal bar 34 and the seal cover 32 meet, and when the seal bar 34 is introduced even a little, the seal cover 34 is sealed. After being pushed into), it was stuck and could not be returned to its original position, which shortened its lifespan.

The present invention has been made in view of the above-described problems in the prior art, and particularly, to completely solve this problem by completely blocking dust introduced through the side gap between the seal bar and the seal cover when the empty truck is rotated after light distribution. The main problem is to provide a slide type sealing device of the sinter bogie to ensure the structure.

The present invention is a means for achieving the above-mentioned problems, the seal cover is fixed to the bottom surface of the bogie frame that is inside the running wheel of the sintered bogie; A seal bar fitted to the seal cover and supported by a sliding rail; A heat-resistant rubber comprising a spring interposed between the inner ceiling surface of the seal cover and the seal bar, and sealing a gap between the inner wall of the seal cover and the seal bar on an upper surface of the seal bar, wherein the fluorine-containing silicon rubber is a biton rubber. In the slide-type sealing device of the sintered trolley provided dust film; Both sides of the bottom of the seal bar provides a slide-type sealing device of the sintered trolley, characterized in that the engaging jaw is further formed in close contact with the lower end of the seal cover.

According to the present invention, both ends of the seal bar and the seal cover are in contact with the 'T' shape so that even dust generated intensively after light distribution cannot be introduced at all between the seal bar and the seal cover, thereby providing a more perfect sealing function.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Figure 4 (a) is an exemplary cross-sectional view of the sealing device according to the present invention, (b) is a perspective view of the main portion, Figure 5 (a) is a cross-sectional view taken after cutting along the line AA of Figure 4 (a). (B) is an exemplary view showing an example of a spring, Figure 6 is an exemplary perspective view of a dust film constituting a sealing device according to the present invention.

As shown in Figures 4 and 5, the sealing device according to the present invention is mounted inside the bottom surface of the sintered trolley 100, as in the conventional to perform the function of preventing leakage during suction as the main blower.

To this end, the sealing device of the present invention is a seal cover 200 is fixed to the bottom surface of the sintered trolley 100, the seal bar 300 is provided in a form that is inserted into the seal cover 200, the upper part, and the seal bar It is configured to include a spring 400 to elastically secure the 300 to the seal cover (200).

At this time, the seal bar 300 is different from the conventional length corresponding to the length of the sintering cart 100, that is, the seal bar 300 and the seal cover 200 is provided with the same length to each other.

For example, considering that the front and rear lengths of most sintered trolleys 100 used in steel mills are approximately 1.5 m, conventionally, one seal cover corresponding to this length and two seal bars corresponding to half of this length are opened. In the present invention, the seal cover 200 and the seal bar 300 have the same length, that is, the length of the seal cover 200 and the seal bar 300 have the same length. One seal cover 200 and the seal bar 300 is to be provided.

At the same time, the total number of the spring 400 was two in total compared to one of the sintered trolley 100, and the total of eight pieces, one in each of the eight equal parts of the total length of the seal cover 200 and the seal bar 300. It was provided.

As a result, the load applied through the sintered trolley 100 is equally distributed to 1/8, thereby preventing uneven wear of the seal bar 300 as well as preventing load distribution even if any one of the eight springs is abnormal. There was no crowding.

The reason why the number of the springs 400 is eight is that the more the load distribution ratio is, the higher the number is, but the optimum state is designed in consideration of the constraints on the installation space and the efficiency of maintenance and repair. .

In addition, since the springs 400 are connected in parallel with each other, the force applied to each spring is increased by x, F1 = K1 · x, F2 = K2 · x, F3 = K3 · x, ..., F8 = K8x (where K is the spring constant), and the sum of the forces applied to the eight springs is the overall force, resulting in F1 + F2 +, ... + F8 = F.

Thus, F = F1 + F2 + F3 + F4 + F5 + F6 + F7 + F8 = (K1 · x) + (K2 · x) + (K3 · x) + (K4 · x) + (K5 · x) + (K6 · x) + (K7 · x) + (K8 · x) = (K1 + K2 + K3 + K4 + K5 + K6 + K7 + K8) x, so the total spring constant K = K1 + K2 + K3 + It becomes K4 + K5 + K6 + K7 + K8, and the force applied to it is reduced to 1/8 of the force when applied to one spring.

In addition, the spring 400, as shown in (b) of Figure 5, can be used both tapered or straight cylindrical.

In addition, the seal bar 300 is formed with a locking projection 600 protruding to both sides as if the lower end is approximately "T" upside down.

At this time, the locking jaw 600 is preferably formed so that both side cross-sections are matched with the outer surface of the seal cover 200 to be engaged with each other.

That is, when the seal bar 300 is pushed into the seal cover 200 while being turned upside down after light distribution, the seal bar 300 is conventionally pushed while compressing the spring 400 but is subjected to an excessive load or another force by other external factors. When the seal bar 300 was pushed completely into the seal cover 200 when this was applied, in the present invention, since the locking jaw 600 is caught by the lower end of the seal cover 200, a separate external force is applied. Even if the locking jaw 600 is not damaged, the seal bar 300 enters only a certain portion into the seal cover 200, and the portion below the locking jaw 600 never enters, and also the locking jaw 600 is closed. Since the bottom of the seal cover 200 is completely engaged, the sealing function is also performed perfectly.

In addition, the seal cover 200 is a member having an approximately '∩' shape in which both ends are open as in the prior art, and in both end surfaces of the seal bar 300 in FIGS. 4 (b) and 5 (a). As described above, the heat resistant rubber 310 is inserted into and integrally provided.

At this time, the heat-resistant rubber 310 is preferably formed to protrude to a length of at least 3mm or more, up to 4mm from one side end surface of the seal bar 300 to be inserted, which is between the seal bar 300 and the adjacent seal bar 300 ' Since the distance T1 is usually 3.0 to 4.0 mm, the distance T2 between the protruding surfaces of these heat resistant rubbers 310 is almost zero, that is, even if the protruding surfaces of the heat resistant rubbers 310 are in contact with or spaced apart from each other. By not more than mm to prevent leakage (reduction of suction pressure) between the two open surfaces of the seal cover 200 to achieve a smooth and efficient suction, thereby maximizing the sintering effect.

On the other hand, the dust cover 500 is embedded in the seal cover 200.

6, the dust film 500 is formed in a rectangular box shape having an approximately upper surface open, and both sides thereof in the longitudinal direction are opened, and both sides of the dust membrane 500 are formed in the inclined wall 520.

At this time, the inclined wall 520 is to seal the internal gap between the seal bar 300 and the seal cover 200, and there is no need to specifically limit the inclination angle, and the inclination is the seal cover (with ease of installation) This is to close contact with the inner wall of the 200). That is, the dust film 500 is preferably a fluorine-containing silicon rubber having both heat resistance and oil resistance, the inclined wall 520 is going to open to the outside by the elasticity (elasticity) of the rubber of the seal cover 200 This is to maximize the sealing force by making it more closely adhered to the inner wall.

In addition, the dust membrane 500 has a tensile strength of 150kg / ㎠ in the fluorine-containing silicon rubber, the elongation corresponds to 390 ~ 460%, even under the conditions of use can be used continuously for more than 48 hours at 320 ℃ or more Particularly preferred is Viton silicon rubber having heat resistance.

Furthermore, the heat-resistant rubber 310 described above is also preferably composed of the Viton silicon rubber.

In addition, the bottom surface 530 of the dust membrane 500 is provided with a plurality, preferably eight shaft holes 532 for installing the spring 400, the dust membrane 500 around the shaft hole (532) A plurality of bolt holes 534 for fixing the upper surface of the seal bar 300 is also formed.

At this time, the shaft hole 532 does not necessarily need to be eight, and the number can be adjusted as necessary, for example, as shown in Figure 4 (a) illustrated in the seal bar 300 fixed to the seal cover 200 If there are two shafts S1 (the remaining spring guide is made by the auxiliary shaft S2), two shaft holes 532 will be required, and although not shown in the other examples, the auxiliary shaft S2 itself is not shown at all. This is because eight shaft holes 532 are required to be fitted to this shaft S1 in the case of forming it as S1).

The operation relationship of the present invention having such a configuration is as follows.

The soft and raw materials discharged from the soft and raw material bin are filled in the sintered bogie 100 which is repeatedly circulated along the endless track and then ignited by the ignition device.

The soft and raw materials in the sintered bogie 100 are sintered by burning from the upper layer to the lower layer by the suction force sucked from the main blower while the sintered bogie 100 containing the complexed soft and raw materials moves.

At this time, the load applied by the sintered trolley 100 is properly distributed by the eight springs 400 interposed between the seal cover 200 and the seal bar 300 constituting the sealing device of the present invention, and these springs The seal bar 300 is closely sealed to the sliding rail ('50' of FIG. 2) while being elastically buffered by 400 so that the seal bar 300 may be closely sealed to prevent a leak.

In addition, the spring 400 is to distribute the load applied to the eight appropriately, so that the heavy load is not applied to the sliding rail (50) also reduces the wear of the seal bar 300, and also caused by the soft, raw materials are biased loading Even if an eccentric load is generated, a plurality of springs 400 which are densely installed compared to the existing are sufficiently distributed so that the deformation of the spring 400 directly below the eccentric load is reduced, and the wear of the seal bar 300 is also prevented. do.

Furthermore, since the heat-resistant rubber 310 is inserted into the surface where the seal bar 300 and the seal bar 300 are in contact with each other, the space between the seal bars 300 is tightly sealed so that the air leakage through the gap is completely blocked so that the suction pressure is not lowered. As a result, the sintering efficiency is also increased.

In such a state, when sintering is completed and light distribution is generated, a lot of dust is caused. Even in this case, the gap between the inner wall of the seal cover 200 and the seal bar 300 is closely sealed by the dust film 500 and sealed. Therefore, the inflow of foreign matter into the seal cover 200 from the outside is blocked at the source, there is no problem of fixing the spring 400 by the inflow of foreign matter.

In addition, since the locking jaw 600 is formed at the lower end of the seal bar 300 and the locking jaw 600 is in close contact with the bottom surface of the seal cover 300, the sealing structure is made of double or triple. It will have a more perfect sealing structure.

In addition, since the seal bar 300 is not completely inserted into the seal cover 200 by the locking step 600, the adhesion between the seal bar 300 and the seal cover 200 is reduced, and thus the use thereof is reduced. It also extends its lifespan.

In addition, since the seal cover 200 and the seal bar 300 are formed to have the same length to correspond to the length of the sintering cart 100, the plurality of springs 400 may be properly distributed and disposed, and maintenance and repair may be performed. It also provides a lot of convenience in the work.

In this way, when the light distribution is completed, the sintered trolley 100 is returned to the initial position, and then the sintered ore is continuously produced by repeating the above-described process in the state of loading lead and raw materials.

1 is an exemplary process diagram showing a general sintering process,

Figure 2 is an exemplary cross-sectional view of the sintering cart used in the general sintering process,

Figure 3 is an exemplary view showing a sealing means of the sintered cart according to the prior art,

Figure 4 (a) is an exemplary cross-sectional view of the sealing device according to the invention, (b) is a perspective view of the main portion,

Figure 5 (a) is a cross-sectional view taken along the line A-A of Figure 4 (a), (b) is an exemplary view showing an example of a spring,

Figure 6 is an exemplary perspective view of the dust cover constituting the sealing device according to the present invention.

♧ description of the symbols for the main parts of the drawing ♧

100 .... Sintered cart 200 .... Seal cover

300 .... Seal bar 310 .... Heat resistant rubber

400 ... spring 500 ... dust barrier

600 ...

Claims

A seal cover 200 fixed to the bottom surface of the trolley frame 12 that is inside the traveling wheel 30 of the sintered trolley 100; A seal bar 300 fitted to the seal cover 200 and supported by the sliding rail 50; A spring 400 interposed between the inner ceiling surface of the seal cover 200 and the seal bar 300, and between the inner wall of the seal cover 200 and the seal bar 300 on an upper surface of the seal bar 300. A heat-resistant rubber for sealing a gap of a sintered trolley, comprising: a sliding sealing device for a sintered trolley provided with a dust film 500 made of fluorine-containing silicon rubber;

Sliding sealing device of the sintered trolley, characterized in that the engaging jaw 600 is further formed on the lower end of both sides of the seal bar 300 while being caught in the contact with the lower end of the seal cover 200.