JPS6239079Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for compacting powdered coal.

A method has been developed in which pulverized coal is compacted into a cake shape and charged into a coke oven, and a compaction device for this purpose, for example, as shown in FIG. 1, is known.

That is, the powdered coal 28 is charged from the powdered coal charging port 26 to the height a, the rod 29 of the consolidation cylinder 25 is lowered, and the powdered coal 28 is consolidated to the height b by the consolidation member 24 fixed to the lower end of the rod 29. do. Next, after the consolidation member 24 is raised, powdered coal is charged from the pulverized coal charging inlet 26 onto the consolidated pulverized coal by a height a, and is consolidated by the consolidation member 24 until it reaches a height b. This means that a cake with a total height of 2b has been consolidated. This operation is repeated until the required cake height h is reached. When the consolidation of the cake is completed, the moving side wall 22 is opened in the direction B by the cylinder 27, and the cake is pushed out of the consolidation device together with the bottom plate 23 while the side pressure at the time of consolidation is removed.

The reason why the consolidation is performed in several steps as mentioned above is that the height h is very large compared to the width c, so the fixed side wall 21 and the movable side wall 22 are
This is because the pressing force of the consolidation cylinder 25 is consumed by the frictional force between the powder and the powdered coal 28, and if a cake with a height h is consolidated at once, the lower part of the cake will not be sufficiently consolidated and its strength will become weak.

Figure 2 shows a large coke oven cake 30 that has been compacted and has dimensions such that the width c is 500 mm.
mm, height h is 6000 mm, and length l is 16000 mm.

As described above, since the size of the cake for a large coke oven is large, a large number of compaction cylinders 25 with large diameters and large strokes are required, and buckling of the rods 29 becomes a problem, and therefore the compaction cylinders 25 are expensive. Not only that, but also because of its large diameter,
There are problems in that a large amount of hydraulic oil is required, and the hydraulic unit becomes large and expensive.

The purpose of the present invention is to provide a compaction molding device for pulverized coal that can reduce the size of the compaction cylinder and the hydraulic unit by reducing the stroke of the compaction cylinder. It is something to do.

For this reason, the configuration of the pulverized coal consolidation apparatus of the present invention is such that in a consolidation apparatus that uses a consolidation cylinder to consolidate pulverized coal in several parts, the bottom plate support member is placed opposite the consolidation cylinder so that it can be raised and lowered freely. The present invention is characterized in that positioning members are provided for the floor plate supporting members in a required number of stages.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

In FIG. 3, reference numeral 1 denotes a frame of the consolidation molding apparatus, which consists of a top plate 10, a bottom plate 16, a fixed side wall 17, a fixed side wall for consolidation 18, etc., and between the fixed side walls 17 and 18, the fixed side wall Movable side wall 2 movable by cylinders 7 and 7' fixed to 17
There is. Further, as shown in FIG. 4, the frame 1 is provided with doors 19 on both sides thereof so as to be openable and closable. A positioning member 1 is provided on the movable side wall 2 and the fixed side wall 18.
A compression cylinder 5 is fixed to the top plate 10, and a compression member 4 having a length corresponding to the length of the cake is fixed to the lower end of the rod 9. ing. Further, a bottom plate support member elevating cylinder 15 is fixed to the bottom plate 16, and a bottom plate support member 12 of the same length as the consolidation member 4 is fixed to the upper end of the rod 11. There is a floor plate 3 on it. That is, the bottom plate support member 12 is disposed opposite to the consolidation cylinder 5 so as to be movable up and down, and
The number of stages of positioning members 14 required for compaction molding is provided.

In the pulverized coal consolidation apparatus configured as shown in FIGS. 3 and 4, as shown in FIG.
2 is set, powdered coal 8 is charged from the powdered coal charging inlet 6 until it reaches a height a. Then, the consolidation member 4 is lowered to consolidate the powdered coal 8 to a height b, and then the consolidation member 4 is raised to its original position. Next, the movable side wall 2 is slightly opened toward the B side, the uppermost positioning member 14 is retracted until its tip is flush with the inner surfaces of the movable side wall 2 and the fixed side wall 18, and the positioning member 14 of the lower stage is pulled in. In the advanced state, the bottom plate support member 12 is lowered until it hits the advanced positioning member 14, and the movable side wall 2 is closed to its original state. At this time, the consolidated pulverized coal 8 has descended by b. That is, when the movable side wall 2 is opened, the lateral pressure that was acting on both side walls 2 and 18 at the time of consolidation becomes zero, and as the bed plate support member 12 descends, the pulverized coal 8 is descending, and powdered coal 8 is on top of it up to a height a.
is charged and compacted in the same manner as above. This operation is repeated until the cake height reaches h, that is, until the lower surface of the bottom plate support member 12 touches the bottom plate 16. As seen in FIG. 3, the top surface of the bottom plate 3 at this time is located above the top surface of the bottom plate 16 by a distance d. In this way, when the consolidation is completed and the cake is formed, the movable side wall 2 is opened and the door 19 shown in FIG.
The cake is opened and the extruder 20 extrudes the cake together with the bottom plate 3 from the compression molding device.

In this way, the force acting on the bottom plate 3 during consolidation is supported not by the cylinder 15 but by the positioning member 14, so the cylinder 15 only needs to support the respective weights of the pulverized coal 8, the bottom plate 3, and the bottom plate support member 12. , the diameter may be extremely small compared to that of the pressure-tight cylinder 5. Also, even if the height h of the cake increases,
Since the stroke of the compression cylinder 5 only needs to be s regardless of the above-mentioned h, the stroke of the cylinder 5 can be significantly reduced. In addition, since the area where large lateral pressure is applied to the side wall during consolidation is limited to the area above the uppermost positioning member 14, the side wall below it can be made of smaller members, which reduces the weight of the cylinder 7'. may be smaller than cylinder 7.

The length of the compaction member 4 is set to a fraction of the length l of the cake 30, and the compaction cylinder 5 is made movable in the above-mentioned direction l, and the compaction cylinder 5 is also divided and compaction-molded in the direction l. The lifting and lowering may be done electrically.

As mentioned above, in the present invention, by employing a positioning member, the diameter of the lift cylinder for the bottom plate support member is significantly reduced, and even if the height of the cake becomes large, the stroke of the consolidation cylinder remains the same as the height of the cake. Regardless of the increase, a small stroke is required. Therefore, the problem of buckling of the rods of the consolidation cylinder and bottom plate support member lifting cylinder is eliminated, the price of both cylinders is significantly reduced, and the amount of hydraulic oil in both cylinders is reduced. This will significantly reduce the cost of the hydraulic unit. Further, since no large lateral pressure is applied below the positioning member at the top, a small member may be used, which greatly contributes to weight reduction and cost reduction.

[Brief explanation of the drawing]

Fig. 1 is a sectional front view showing an example of a conventional compaction molding device, Fig. 2 is a perspective view of a cake, Fig. 3 is a sectional front view showing an embodiment of the present invention, and Fig. 4 is a sectional front view showing an example of a conventional compression molding device. FIG. 3 is a cross-sectional plan view taken along cutting line A-A in the figure. DESCRIPTION OF SYMBOLS 1... Frame, 2... Moving side wall, 3... Bottom plate, 4... Consolidation member, 5... Consolidation cylinder, 8...
... Powdered charcoal, 10... Top plate, 12... Bottom plate support member,
14... Positioning member, 15... Bottom plate support member elevating cylinder, 16... Bottom plate, 17, 18... Fixed side wall.

Claims (1)

[Scope of utility model registration request] A pulverized coal consolidation device that divides pulverized coal into several parts and densifies it using a consolidation cylinder, is equipped with a bed plate support member that is arranged to face the consolidation cylinder and can be raised and lowered freely, and has the number of stages required for consolidation molding. A compaction molding device for powdered coal, characterized in that a positioning member for the bottom plate support member is provided.