JP4374284B2 - Coke oven leveler - Google Patents

Description

  The present invention relates to a leveler for a coke oven for uniformly leveling the upper surface of the charged coal charged in the carbonization chamber of the coke oven.

  The coke oven leveler is for leveling the upper surface of the coal that is deposited conically below the coal inlets, and is a beam-like that can be advanced and retracted in the carbonization chamber by the drive unit of the extruder. A leveler body is provided, and a leveling plate for leveling the upper surface of the charged coal is provided on the leveler body.

  The leveler body shown in FIG. 7 has a pair of left and right side plates 50a and 50b and a front end portion 51 connecting the tips of the side plates 50a and 50b, and a lower edge 51a of the front end portion 51 is inclined upward. Is formed.

  The left and right side plates 50 a and 50 b are connected by a plurality of partition plates 52 arranged in parallel at a predetermined interval, and a pressurizing body 53 is disposed between the partition plates 52.

  The bottom surface 51b of the front end portion 51 and the bottom surface 53a of the pressurizing body 53 are formed flat, and press the uniformly leveled charging coal upper surface to increase the bulk density (for example, Patent Document 1).

  The leveler body shown in FIG. 8 has a pair of left and right side plates 60a and 60b and a front end portion 61 connecting the tips of these side plates 60a and 60b, and a lower edge 61a of the front end portion 61 is also inclined upward. It is formed in the state.

  Further, the left and right side plates 60a, 60b are connected by a plurality of partition plates 62, and the charged coal is stirred by the partition plates 62. In each room surrounded by the partition plate 62 and the side plates 60a and 60b, a bottom plate 63 is provided in a state of being inclined forward and backward.

A leveling plate 63 is also provided at the front end of the front end portion 61. The leveling plate 63 cuts the peak portion of the charging coal when the leveler moves forward, and drops the scraped charging coal into the hem of the peak portion to coke. Side charcoal burnout is prevented (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 61-199544 Japanese Examined Patent Publication No. 6-80158

  However, although the thing of the above-mentioned patent document 1 can raise the bulk density by equalizing and pressing the unevenness | corrugation of the charging coal upper layer, since the front-end | tip is formed in the curved surface, the coal pushing of the coke side is carried out. There is a disadvantage that the effect is small. As a result, the charging coal in the carbonization chamber after leveling has a tendency to decrease in packing density toward the coke side.

  In that respect, the thing of patent document 2 is provided with the leveling board 63 in the front-end part 61, and prevents the burning of the coke side. However, since the leveling plate 63 is simply constituted by a flat plate, there is a problem that the charging coal cannot be accurately pushed in aiming at the coke side.

  The present invention has been made in consideration of the problems in the conventional leveler for a coke oven as described above. By accurately pushing the charge coal toward the coke side, the charge coal in the carbonization chamber is efficiently leveled. The present invention provides a coke oven leveler capable of improving the charging unit.

  The present invention has a beam-like side plate arranged on the left and right in a parallel state, and a partition plate that connects the both side plates in the left-right direction, and is configured to be movable forward and backward over the entire length of the coke oven carbonization chamber. In the coke oven leveler, the leveler tip is loaded into the carbonization chamber with both side plates on the tip side, a bottom plate that connects the lower part of the side plates in the left-right direction, and a back plate raised from the rear of the bottom plate. The gist is that a rake portion configured to accommodate a part of the charged coal is provided.

  In the present invention, the scoop portion is configured to cut the peak portion of the charging coal when the leveler moves forward and transfer the charging coal to the coke side, and the bottom plate transfers the transferred charging coal to the coke side when the leveler moves backward. The gist is that it is configured to have a sloping surface that descends so as to be discharged.

  In the present invention, the gist of the invention is that the back plate is arranged in an inclined state toward the leveler retreat direction, and is configured to form an acute angle with the bottom plate. Thereby, the charging coal accommodation amount in a rake part can be raised.

  In the present invention, the side plate includes a parallel portion whose upper edge and lower edge are parallel, and a non-parallel portion whose lower edge is inclined upward from the parallel portion toward the leveler tip. The gist of the present invention is that the partition plate provided in is formed with a cutout portion that is cut out to a position higher than the lower edge of the parallel portion. Thereby, the amount of charging coal remaining in the carbonization chamber can be increased.

  In the present invention, a coal holding portion for temporarily holding coal is provided on the front side wall surface of the partition plate, and the coal holding portion is formed of a band plate-like member and wedges downward between the side plate when viewed from the leveler advance / retreat direction. It is arranged to be inclined so as to form a channel-like passage and is fixed in a state of protruding from the front side wall surface in the leveler forward direction. Thereby, it can cooperate with the said rake part and can increase charging amount of charging coal.

  Since the leveler for the coke oven of the present invention has a rake portion at the leveler tip, it is possible to accurately push the charging coal aiming at the coke side, and to efficiently level the charging coal in the carbonization chamber, It has the advantage that the charging unit can be improved.

  Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

  FIG. 1 is an overall view showing an embodiment of a coke oven leveler (hereinafter abbreviated as a leveler) according to the present invention.

  In the figure, a leveler 1 is configured to be guided by a roll-type guide mechanism (not shown) so as to be moved in the horizontal direction (front-rear direction), and enters the coke oven carbonization chamber by driving an extruder (not shown), or It is supposed to leave.

  The leveler 1 has beam-like side plates 2 and 3 arranged on the left and right in a parallel state, and these side plates 2 and 3 are divided by a plurality of partition plates 4a to 4i that partition the longitudinal direction of the leveler 1 at a predetermined interval. It is connected.

  The lower end edges 2a and 3a of the side plates 2 and 3 are inclined forward and upward along the length L. This inclination (non-parallel portion) is formed in consideration of the drooping of the tip of the leveler, and the leveler 1 is held substantially horizontally even when the leveler 1 is inserted to the inner side of the carbonization chamber.

  At the tip of the leveler 1, a scoop portion 5 for storing the charged coal charged in the carbonization chamber is formed.

  The scooping portion 5 includes tip side plates 2b, 3b, a bottom plate 6 connecting the lower portions of the side plates 2b, 3b in the left-right direction, and a back plate 7 raised from the rear of the bottom plate 6. ing.

  FIG. 2 is an enlarged view of the rake portion 5, wherein (a) is a plan view and (b) is a side view.

In both figures, when the horizontal line H and the vertical line V are virtually drawn in the horizontal direction with the tip S of the rake part 5 as the end point, the inclination angle θ ₁ of the bottom plate 6 is 15 ° or more upward with the horizontal line H as the reference line. The back plate 7 is set at an angle θ ₂ of 60 ° or more and 70 ° or less downward with respect to the side plate upper edges 2c and 3c on the front end side as a reference line. Further, the inclination angle θ ₃ of the side plates 2b and 3b is set to be approximately 40 ° from the vertical line V.

  The purpose of inclining the bottom plate 6 downward is to increase the exhaustability of the coal accommodated in the rake portion 5 in the backward movement of the leveler 1.

However, if the inclination angle θ ₁ is excessively increased, the space for accommodating the coal is narrowed and the effect of charging the coal into the coke side is reduced. Therefore, the setting of the inclination angle θ ₁ can accommodate a desired amount of coal. Set the range. In addition, since discharge | emission property is influenced by the fluidity | liquidity (for example, a particle size, a water | moisture content, etc.) of coal to be used, when operating conditions are changed, it is preferable to change inclination-angle (theta) ₁ suitably according to the operating conditions. .

  The purpose of inclining the back plate 7 is to increase the amount of coal that can be accommodated in the rake portion 5 by forming an acute angle with the bottom plate 6.

However, if the inclination angle θ ₂ of the back plate 7 is made too small, the rake portion back portion 5a (see FIG. 2 (b)) becomes too acute, causing coal clogging. Therefore, it is desirable to determine the inclination angle θ ₂ of the back plate 7 in consideration of operating conditions such as the fluidity of the coal used.

  In this embodiment, the verification is experimentally performed based on the operating conditions, and the angles of the bottom plate 6 and the back plate 7 are set to 15 ° and 65 °, respectively.

  FIG. 3 shows the configuration of the partition plate 4d as a representative. In the present embodiment, the partition plate 4a is provided in a non-parallel portion (range L) in which the lower edges of the side plates 2 and 3 are inclined upward, and the partition plates 4b to 4i are ranges excluding the range L, That is, the side plates 2 and 3 are disposed in parallel portions where the upper and lower edges are parallel (see FIG. 1).

The partition plate 4d is connected to the left and right side plates 2 and 3 so as to partition the longitudinal direction of the leveler 1 at a predetermined interval. The vertical edge portions 4d ₁ and 4d _{2 on} both the left and right sides are connected to the height of the side plates 2 and 3, respectively. It is formed at the same height.

A notch (notch) 4d ₃ is formed below the center portion of the partition plate 4d. The cutout 4d ₃ is a leveler 1 has strength required to hold the ladder is cut out in a range capable of securing the partition plate 4d, the upper edge length of the cutout 4d ₃ Sa <notch 4d ₃ The opening length Sb is formed so as to spread downward toward the bottom.

Coal holding portions 8 and 9 for temporarily holding coal are attached along the left and right edges 4d ₄ and 4d ₅ of the notch 4d ₃ .

  The coal holding portions 8 and 9 are made of band plate-like members, and downward wedge-shaped passages Ta and Tb are formed between the side plate 2 and the side plate 3 when the longitudinal direction thereof is viewed from the leveler advance / retreat direction (front-rear direction). It is arranged so as to be inclined in a letter C.

Further, the holding portions 8 and 9 are fixed in a state in which the width direction thereof is directed to the leveler forward direction and protrudes forward from the left and right edges 4d ₄ and 4d ₅ of the notch 4d ₃ .

  Next, the operation of the leveler 1 having the above configuration will be described with reference to FIG.

  In FIG. 4, 10 is a carbonizing chamber of a coke oven into which the leveler 1 is inserted, 11 is a riser pipe, and 12 is a charging hole for charging coal.

  In the figure, CS indicates the coke side, and MS indicates the machine side where the extruder is arranged.

  In the upper part of the furnace wall 13 on the machine side MS side, an opening 14 for leveler insertion is provided, and this opening 14 is provided with a small lid (not shown).

In FIG. 4A, the leveling 1 cuts the charging coal peak while charging coal into the carbonization chamber 10. At this time,
1) First, the leveler 1 is pushed all the way to the coke side CS, and so-called “great leveling” is performed.
2) Next, as shown in FIG. 4 (b), the leveler 1 is pulled back to the machine side MS side by about 6 m, and so-called charging coal CO is "smallly leveled".
3) Again, the leveler 1 is pushed to the coke side CS.
4) By repeating the above steps 2) and 3) several times, the peak portion COt of the charged coal CO is leveled. At this time, surplus charging coal COs is discharged from the opening 14 to the outside of the carbonization chamber.
5) As shown in FIG. 4C, the leveler 1 is pulled out at once.

  By the above-described leveler advance / retreat operation, it is possible to reliably push the charging coal into the coke side CS, which has been difficult to fill with charging coal and has been apt to run out of carbon.

  In the same figure, CO1 shows the upper surface of the charging coal leveled by the leveler 1 of this embodiment, and CO1 'shows the upper surface of the charging coal leveled by the conventional leveler for comparison. That is, the hatched portion M between CO1 and CO1 ′ indicates the coal charge improved by the present embodiment.

  FIG. 5 shows a modification of the partition plate 4d described above.

In the partition plate 4d shown in the figure, the upper end of the holding portions 15 and 16 is extended up to the upper edge 4d ₆ of the partition plate 4d. According to this structure, compared with the holding | maintenance parts 8 and 9 shown in FIG. Moreover, not only this but coal holding | maintenance amount can be raised also by extending the width direction length of the holding parts 15 and 16 to the front.

  In the above embodiment, the rake portion 5 is fixed to the tip of the leveler. However, the present invention is not limited to this, and the bottom plate 6 and the back plate 7 are integrated and movable, and the tip S of the rake portion 5 (see FIG. 2B). It can also be configured to be able to swing in the vertical direction with fulcrum as a fulcrum. If comprised in that way, even if an operating condition is changed, a desired pushing amount can be obtained, without replacing a leveler.

Further, when the strength of the leveler 1 is insufficient by providing the notch 4d ₃ in the partition plate 4d, a pipe-like member is installed on the left and right side plates 2 and 3 in addition to the partition plate 4d to compensate for the lack of strength. It may be.

  Next, FIG. 6 shows a modified example of the rake part 5.

  The leveler 20 shown in the figure is connected by side plates 21 and 22 having basically the same configuration as the side plates 2 and 3 described above, and a plurality of partition plates 23a, 23b,. .

  The scooping portion 24 formed at the tip of the leveler 20 stands from the side plates 21a, 22a on the tip side, the bottom plate 25 connecting the lower portions of the side plates 21a, 22a in the left-right direction, and the rear of the bottom plate 25. The back plate 26 is raised.

  However, the side plates 21a and 22a on the front end side are not cut so as to linearly connect the back plate upper end 26a and the bottom plate front end 25a, but the upper edges of the side plates 21 and 22 extend further forward. It is lowered through the rounded portions 21a and 22b and communicates with the bottom plate tips 25a and 25b.

  According to the rake part 24 having such a configuration, the volume for accommodating coal can be increased as compared with the rake part 5 shown in FIG. In addition, 27 and 28 are coal holding | maintenance parts, and are provided along the left and right edges of the notch 29.

It is a perspective view which has a partial notch which shows the whole structure of the leveler which concerns on this invention. (a) is a top view which shows the structure of the leveler front-end | tip part shown in FIG. 1, (b) is the side view. It is an enlarged view which shows the structure of the partition plate of the leveler shown in FIG. (a)-(c) is explanatory drawing explaining operation | movement of a leveler. FIG. 6 is a view corresponding to FIG. 3 showing a modification of the partition plate. It is a perspective view which shows the modification of a rake part. It is a perspective view which shows the structure of the conventional leveler. It is a perspective view which shows the structure of another conventional leveler.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Leveler 2, 3 Side plate 4a-4i Partition plate 4d ₃ Notch 4d ₄ , 4d ₅ Both right and left edges 5 Rake part 6 Bottom plate 7 Back plate 8, 9 Holding part 10 Coking chamber 11 Rising pipe 12 Insertion hole 13 Furnace wall 14 Opening CS Coke side MS Machine side CO Charging

Claims (5)

A coke oven leveler that has beam-like side plates that are arranged on the left and right in parallel and a partition plate that connects both side plates in the left-right direction, and is configured to move forward and backward over the entire length of the coke oven carbonization chamber. In
A device installed in the carbonization chamber by the both side plates on the tip side, a bottom plate connecting the lower portions of the both side plates in the left-right direction, and a back plate raised from the rear of the bottom plate at the tip of the leveler. A leveler for a coke oven, characterized in that a rake portion configured to accommodate a part of coal entering is provided.   The scoop portion is configured to cut the peak portion of the charging coal when the leveler moves forward and transfer the charging coal to the coke side, and the bottom plate discharges the transferred charging coal at the coke side when the leveler moves backward. The leveler for a coke oven according to claim 1, wherein the leveler is configured to have a slanting surface that is inclined downward.   The leveler for a coke oven according to claim 1 or 2, wherein the back plate is arranged in an inclined state toward a leveler retreating direction, and is configured to form an acute angle with the bottom plate.   The side plate includes a parallel portion whose upper edge and lower edge are parallel, and a non-parallel portion whose lower edge is inclined upward from the parallel portion toward the leveler tip, and is provided in the parallel portion. The leveler for coke ovens according to any one of claims 1 to 3, wherein the partition plate is formed with a notch portion that is notched to a position higher than a lower edge of the parallel portion.   There is a coal holding portion for temporarily holding coal on the front side wall surface of the partition plate, and the coal holding portion is formed of a strip plate-like member, and has a wedge-shaped downward passage between the side plate and the side plate when viewed from the leveler advance / retreat direction. The coke oven leveler according to any one of claims 1 to 4, wherein the coke oven leveler is fixed so as to protrude from the front side wall surface in a leveler forward direction.

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