JPS6239080Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a compaction molding device for powdered coal, and in particular, the bottom member is supported by a bottom member support means having a telescoping arm. The present invention relates to a compaction molding device for powdered coal that has a small downward protrusion, eliminates the need to dig a foundation to house a bottom member supporting means, and can significantly reduce costs.

Generally, in order to obtain hard coke, a method is adopted in which powdered coal, which is a blend of coking coal and steam coal, is compacted to a high density to form a compacted cake, and the cake is carbonized to produce coke. As an apparatus for manufacturing a compacted cake, the one shown in FIG. 1 has been proposed by the present inventor. This device has a consolidation molding frame 1 whose upper part is open, and the upper part of the consolidation molding frame 1 consolidates the powdered coal P charged into the molding frame 1, and the consolidated cake is transferred to the lower part of the frame. A pressure-tight cylinder 2 is provided for the transfer. At the tip of the piston rod 2a of the consolidation cylinder 2, an elongated rectangular flat consolidation member 3 that fits into the molding frame 1 is attached, and the consolidation member 3 is driven up and down within the molding frame 1 by the consolidation cylinder 2.

Inside the molding frame 1, a bottom plate 4 and a bottom plate supporting member 5 are provided as bottom members that partition the bottom of the molding frame 1. The bottom plate 4 and the bottom plate support member 5 have the same shape as the consolidation member 3, and are designed to be able to slide within the molding frame 1. A bottom plate 4 is provided below the bottom plate support member 5.
A bottom member supporting cylinder 6 for supporting the bottom plate supporting member 5 is provided, and an elevating rod 6a of the bottom member supporting cylinder 6 is connected to the bottom plate supporting member 5. Further, the consolidation molding frame 1 is provided with stopper members 7 that lock the bottom plate supporting members 5 in multiple stages vertically, and each stopper member 7 has an actuating cylinder 8 that makes the stopper members 7 protrude and retract from the inner wall surface of the molding frame 1. connected. Furthermore, a pulverized coal charging inlet 9 for charging pulverized coal P into the frame is formed in the upper part of the forming frame 1 . (In Fig. 1, the operating cylinders 8 of the second stage and below are omitted.) This device can shorten the stroke of the compression cylinder 2, and significantly reduce the number and output of the cylinders 6 for supporting the bottom member. The feature is that it can be done. That is, the compaction of powdered coal by the compaction cylinder 2 is performed only in the upper part of the compaction molding frame 1 (the powdered coal P charged into the frame from the powdered coal charging port 9 and having a height A for one round of consolidation is consolidated to a height B). ), and the consolidated cake is transferred to the next lower stopper member 7 by the consolidation cylinder 2 while being held by the side pressure of the forming frame 1, and consolidated cakes are successively formed in an accumulated manner. Ru. Therefore, the consolidation cylinder 2
For the stroke, it is sufficient to add the transfer stroke B to the consolidation stroke S, and since the consolidation cake is held between the forming frame 1 and the large load of the consolidation cake does not act on the bottom member supporting cylinder 6,
The number of bottom member supporting cylinders 6 can be reduced. (The compacted cake C has a wall shape as shown in Figure 5, and the compacted cake size for a large coke oven is width W.
= 450mm, height H = 7200mm, length L = 16200mm, and its own weight reaches approximately 55 tons. ) However, in the above device, the cylinder 6 for supporting the bottom member is long (for large coke ovens, the stroke is 6500 mm or more), so the device is tall and large, and a long and expensive cylinder is required. do. In addition, if this device is installed in front of an existing coke oven, the overhang G ₁ of the bottom member supporting cylinder 6 below the bottom surface of the bottom plate 4, which is the level at which the consolidated cake is charged into the coking chamber, is too large. Therefore, it is necessary to dig down the foundation so that the cylinder 6 and the foundation do not interfere with each other. Furthermore, in the case of installation in front of the oven, this device must be loaded onto a traversing cart and moved to each coking chamber, which requires digging into the foundation over the entire width of the coke oven, which increases costs.

The present invention has been devised to effectively solve the above-mentioned conventional problems, and the purpose of the present invention is to shorten the height of the bottom member support means, promote miniaturization of the device, and reduce the height of the bottom member support means. To provide a compaction molding device for pulverized coal in which a support means does not protrude downward from the device, does not require digging of a foundation, etc., and can significantly reduce costs.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In FIGS. 3 and 4, reference numeral 10 denotes a box-shaped frame of the compression molding apparatus, which has a top plate 11, fixed side walls 12, 13, and a bottom plate 14. Openings 15 and 16 are provided at both longitudinal end openings of the frame 10 to cover the openings. Inside the frame 10, a movable side wall 17 is provided which stands on the bottom plate 14 facing the fixed side wall 12 and is slidable in the width direction of the frame 10. A cylinder 18 fixed to one fixed side wall 13 is connected to the movable side wall 17, and the movable side wall 17 can be moved close to and away from the other fixed side wall 12 by the cylinder 18. A box-shaped compression molded frame 1 is formed from the movable side wall 17, the fixed side wall 12, and the opening/closing doors 15, 16. A consolidation cylinder 2 is provided in the upper part of the frame 10 above the consolidation molding frame 1 . As shown in FIG. 4, the compression cylinder 2 is
They are provided at appropriate intervals along the longitudinal direction of the molding frame 1. Inside the molding frame 1, a thick bottom member 19 defining the bottom of the molding frame 1 is provided so as to be slidable up and down.

Further, the movable side wall 17 and the fixed side wall 12 of the consolidation frame 1 are provided with stopper members 7 for placing the bottom member 19 in a step-like manner along the vertical direction of the consolidation frame 1. Stopper member 7
are provided on the movable side wall 17 and the fixed side wall 12 at positions facing each other in multiple stages.
Height B of the compacted cake formed by three times of compaction
is set to . Further, each stopper member 7 is provided with an actuation cylinder 8 for moving the stopper member 7 into and out of the inner wall surface of the movable side wall 17 or the fixed side wall 12. (In the illustrated example, components other than the operating cylinder 8 of the top stopper member 7 are omitted.) Below the bottom member 5, as shown in FIG. 3 or 5, there is a bottom portion that supports the bottom member 19. Member support means 20 are provided. Bottom member support means 2
0 is mainly composed of a telescoping arm 21 that can be extended and contracted in the vertical direction and a drive cylinder 22 that drives the telescoping arm 21 to extend and contract. The telescoping arm 21 is composed of links 23 rotatably connected to each other by joint pins, and the links 23 are assembled in the shape of a series of rhombuses so as to be telescopic in a pantograph manner. A roller 2 is installed at the upper end of the telescopic arm 21.
4 is rotatably attached, and the bottom member 19 is supported via rollers 24. frame 10
As shown in FIG.
A casing 25 for accommodating 1 is provided. One of the lower ends of the links 23, 23 at the bottom of the telescopic arm 21 is pivotally supported by a bracket 26 fixed to the bottom wall 25a of the casing 25, and a roller 27 is rotatably mounted on the other side so as to be able to move on the bottom wall 25a. The actuating rod 22 of the drive cylinder 22 is attached and extends and contracts along the bottom wall 25a.
a are connected. Furthermore, a through hole 14a is formed in the bottom plate 14 for allowing the telescopic arm 21 to move in and out of the consolidation molding frame 1. The bottom member support means 20 is also connected to the consolidation cylinder 2 and inside the consolidation molding frame 1.
They are provided at appropriate intervals along the longitudinal direction.

Consolidation molding frame 1 above the top stopper member 7
Since the pulverized coal is consolidated in the process, the upper wall of the consolidation molding frame 1 is formed thick. Furthermore, a pulverized coal charging inlet 9 for charging pulverized coal P into the frame is formed in the fixed side wall 12 at the upper part of the forming frame 1. Further, on the outside of the opening/closing door 15, as shown in FIG. 4, an extruder 28 is provided for pushing out the compacted cake compacted in the molding frame 1 to the outside of the frame 10.

Next, the operation of this embodiment will be described.

With the stopper members 7 of all stages retracted by each actuating cylinder 8 until they are flush with the movable side wall 17 or the fixed side wall 12, the bottom member supporting means 2
The actuating rod 22a of the drive cylinder 22 is extended. By this extension of the actuating rod 22a, each link 23 of the telescoping arm 21 that is folded inside the casing 25 gradually stands up, and the telescoping arm 21 is extended. After the bottom member 19 is lifted slightly above the top stopper member 7 by the telescopic arm 21, the stopper members 7 at all stages are moved forward by the respective operating cylinders 8 and projected into the consolidation molding frame 1. Next, powdered coal P for one consolidation is charged onto the bottom member 19 from the powdered coal charging port 9 until the height A is reached. The supporting force of the telescoping arm 21 by the drive cylinder 22 is set to a value slightly larger than the weight of the bottom member 19, so the telescoping arm 21 contracts when the weight of the powdered coal P is applied to the bottom member 19, and accordingly The bottom member 19 then descends and stops when it comes into contact with the topmost stopper member 7, as shown in FIG.

Next, the consolidation member 3 is lowered by the consolidation cylinder 2, and the powdered coal P at the height A in the molding frame 1 is consolidated to the height B to form a consolidation cake. After consolidation molding, the consolidation member 3 is slightly raised to remove the pressing force of the consolidation member 3 against the consolidation cake, and the top stopper member 7 is placed so that its tip is flush with the inner wall surface of the fixed side wall 12 or the movable side wall 17. Back up until it is. At this time, there is residual lateral pressure between the pressurized consolidation cake and the fixed side wall 12 and the movable side wall 17, and the frictional force due to this lateral pressure is greater than the consolidation cake's own weight, so the consolidation cake is consolidated without descending. It is held stationary by the molding frame 1. The bottom member 19 is also supported by the telescoping arm 21 and remains in that position.

Next, the consolidation cake and the bottom member 19 are pushed down together by the consolidation member 3 until the lower surface of the bottom member 19 comes into contact with the second stopper member 7, which is one level below the top stopper member 7. At this time, the supporting force of the telescoping arm 21 by the drive cylinder 22 is set to be slightly larger than the weight of the bottom member 19, but if more pressing force is applied from the consolidation member 3, the drive cylinder 22 is automatically relieved. The valve opens, the telescopic arm 21 contracts following the lowering of the compacting member 3, and the roller 24 at its upper end lowers together with the bottom member 19 and the compacting cake. By this operation, the consolidation cake is lowered by the height B while being held in the consolidation molding frame 1.

Next, after raising the consolidation member 3, pulverized coal P is charged onto the consolidation cake from the pulverized coal charging port 9 to the height A in the same manner as described above, and this charged pulverized coal is raised to the height B by the consolidation member 19. Consolidation mold until it becomes solid. This means that a consolidated cake with a total height of 2B has been molded. Thereafter, the same operation as above is repeated until the height of the consolidated cake reaches H. After compaction molding the compaction cake C of height H, the moving side wall 17 is separated from the compaction cake C by the cylinder 18, and the opening/closing doors 15 and 16 are opened to reduce the residual side pressure between the compaction cake and the compaction molding frame 1. The compacted cake C is removed from the frame 1 along with the bottom member 19 by an extruder 28.
0 Push outside. As the telescopic arm 21 expands and contracts, the roller 24 at its upper end moves along the longitudinal direction of the bottom member 19 while rolling. Further, after the compaction molding of the compaction cake C is completed, the hydraulic pressure of the drive cylinder 22 of the bottom member support means 20 is blocked, and the telescopic rod 21 will not rise.

As described above, in this embodiment, the telescopic arm 21 of the bottom member supporting means 20 is formed to be extendable and retractable, and the bottom member 19 is supported within the molding frame 1 so as to be movable up and down. , when the consolidation cake is pushed down together with the bottom member 19 by the consolidation cylinder 2, the telescopic arm 2
When the compression molding is completed, the telescopic arm 21 is folded up and accommodated in a small space within the casing 25, as shown by the chain line in FIG. Further, when starting consolidation molding, the bottom member 19 can be lifted above the consolidation molding frame 1 by extending the telescopic arm 21 using the drive cylinder 22. In this way, since the bottom member 19 is supported using the extendable arm 21 in the bottom member support means 20, the conventional long and expensive cylinder 6 for supporting the bottom member is no longer necessary. The device can be made smaller. Furthermore, the projection below the bottom surface of the bottom member 19, which is the charging level to the carbonization chamber.
Since G ₂ is small, there is no interference between the casing 25 that accommodates the bottom member support means 20 and the foundation, and there is no need to dig into the foundation, resulting in a significant cost reduction. Furthermore, since there is no need to dig into the foundation, this device can be installed directly in front of an existing coke oven, making it highly practical.

Note that in the above embodiment, the telescopic arm 21
At the upper end (center of the telescopic arm 21) is a roller 2.
4 is attached to support the bottom member 19, and as the telescoping arm 21 expands and contracts, the roller 24 at its upper end moves in the longitudinal direction of the molding frame 1 while rolling along the lower surface of the bottom member 19. However, as shown in FIG. 6, one of the upper ends of the links 23, 23 on the upper part of the telescopic arm 21 is pivotally connected to a bracket 29 fixed to the bottom plate support member 5, and a roller 30 is rotatably attached to the other one. If the telescopic arm 21 is attached to the telescopic arm 21, the center of the telescopic arm 21 will remain on the same vertical line and will not move even if the telescopic arm 21 is extended or contracted. In this case, since the upper end of the telescopic arm 21 is attached to the bracket 29, the bottom plate supporting member 5 cannot be extruded together with the consolidated cake when extruding the compacted cake. and a bottom plate support member 5. Further, in the above embodiment, the links 23 are arranged in a rhombus shape, but of course they may be arranged in a more general parallelogram shape.

In summary, according to the present invention, the following excellent effects can be achieved.

(1) As the bottom member support means, a Pandagraph type telescoping arm, which is made up of a parallelogram-shaped link mechanism connected in a circular pair and can be vertically extended and contracted, is used, and the bottom member is supported by this telescoping arm. This eliminates the need for a conventional long and expensive cylinder for supporting the bottom member, allowing the device to be significantly downsized.

(2) Since the bottom member support means does not protrude downward from the device and there is no interference between the bottom member support means and the foundation, there is no need to dig into the foundation and costs can be reduced.

(3) There is no need to dig into the foundation, and this device can be easily installed as is on the horizontal carriage in front of the existing coke oven, making it extremely practical.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a conventional compaction molding device, Fig. 2 is a perspective view of a compacted cake formed by compaction, and Fig. 3 is a side sectional view of a conventional compaction molding device.
The figure is a side sectional view showing one embodiment of the consolidation molding apparatus according to the present invention, FIG. 4 is a sectional view taken along the - line in FIG. 3, and FIG. 6
The figure is a front sectional view showing another embodiment of the bottom member supporting means. In the figure, 1 is a consolidation molding frame, 2 is a consolidation cylinder, and 3
1 is a consolidation member, 4 is a bottom plate, 5 is a bottom plate support member, 7 is a stopper member, 8 is an operating cylinder, 9 is a pulverized coal charging inlet, 10 is a frame, 15 and 16 are opening/closing doors, 1
7 is a movable side wall, 19 is a bottom member, 20 is a bottom member support means, 21 is a telescopic arm, 22 is a drive cylinder, 23 is a link, and P is powdered coal.

Claims (1)

[Scope of utility model registration request] A box-shaped consolidation molding frame that is partitioned by openable side walls and has a pulverized coal charging inlet at the top for charging pulverized coal, and expands and contracts along the lower side from the upper opening of the molding frame. a consolidation cylinder for consolidating charged pulverized coal; a bottom member slidably provided within the consolidation molding frame and defining a bottom part of the consolidation molding frame; and a bottom member vertical to the consolidation molding frame; A stopper member is installed at a predetermined interval in the direction and is movable from the consolidation molding frame so as to lock the bottom member in a stepwise manner along the consolidation molding frame, and a stopper member is provided to allow the bottom member to move its own weight below the consolidation molding frame. A pulverized coal compaction molding apparatus comprising: a bottom member supporting means having an extendable arm which is provided to support the member and which is made of a parallelogram-shaped link mechanism connected in a circular pair and is extendable and retractable in the vertical direction.