JPS6239081Y2 - - 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, pulverized coal is charged from the pulverized coal charging inlet 26 to a height a above the consolidated pulverized coal, 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 during consolidation is removed.

The reason why the consolidation is performed in several steps as described 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 present invention reduces the stroke of the compaction cylinder and eliminates the moving side wall, thereby making the compaction cylinder compact, the entire device compact, and the hydraulic unit compact. The object of the present invention is to provide a compression molding device.

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. and the necessary number of tiers of positioning members for the bottom plate support members are provided, and both side walls of the frame are fixed, and the interval between the side walls is the same as the width of the molded cake only in the consolidation molded part, and The area below the compression molded portion is characterized by being larger than the above dimensions.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 3 to 5.

In Fig. 3, 1 is a frame of the compaction molding device, which is composed of one fixed side wall 2, a top plate 10, the other fixed side wall 7, a bottom plate 16, etc., and as shown in Fig. 5, doors 17 are provided on both sides so as to be able to be opened and closed (in Fig. 5, one door 17 is shown, and the other door is omitted).
A positioning member 14 is attached to the top plate 1 and 7 so as to be movable forward and backward by a cylinder 13.
A compaction cylinder 5 is fixed to the bottom plate 10, and a compaction member 4 having a length corresponding to the cake length is fixed to the lower end of its rod 9. A base plate support member lifting cylinder 15 is fixed to the bottom plate 16, and a base plate support member 12 having the same length as the compaction member 4 is fixed to the upper end of its rod 11.
The distance between the fixed side walls 2 and 7 is the same as the width c of the molded cake (see Figs. 3 and 4) only in the compaction molding part (the part above the lower surface of the bottom plate support member 12 shown by the solid line in Fig. 3), and the part below that is c' (see Figs. 3 and 4) which is larger than the dimension c.

In the pulverized coal consolidation apparatus configured as shown in FIGS. 3 to 5, as shown in FIG.
2 is set, powdered coal 8 is charged from the powdered coal charging inlet 6 to a height a. Then, after lowering the consolidation member 4 and consolidating the powdered coal 8 until the height becomes b, the consolidation member 4 is raised a little (raised by f),
The pressurizing force by the compression cylinder 5 is removed. In this state, the uppermost cylinder 13 retracts the uppermost positioning member 14 until its tip is flush with the inner surfaces of the fixed side walls 2 and 7. Next, the positioning member 14 of the lower stage is advanced, and in this state, the consolidation member 4 is lowered by the sum of f and b, and the bottom plate support member 1
2 against the advanced positioning member 14. At this time, the rod 11 is made to descend by the pushing force of the compression cylinder 5. In this state, the upper surface of the consolidated pulverized coal 8 is in a state in which the upper surface of the consolidated pulverized coal 8 protrudes above the E surface (the upper surface of the uppermost positioning member 14) in FIG. 3 by an amount d. Next, the consolidation member 4 is raised by the sum of s and b and returned to the initial position. Then, powdered coal is charged onto the compacted powdered coal 8 to a height a, and compacted in the same manner as described above until this height reaches b. Here, the initially consolidated powdered coal 8 is consolidated under high pressure and becomes hard, and its upper part (height d) is sandwiched between fixed side walls 2 and 7 having the same width c as in the consolidated state. Furthermore, when the charged pulverized coal is compacted, a considerable portion of the pressurizing force from the consolidation cylinder 5 is spent on the side pressure of the fixed side walls 2 and 7, so if the pressurizing force is the same, the pulverized coal 8 that was consolidated first will It won't break. This means that a cake with a total height of 2b has been consolidated.

The above operations are repeated until the height of the cake reaches h, and when the molding is completed, the lowest positioning member 14 is moved back, and the consolidation member 14 is moved back until the lower surface of the bottom plate support member 12 touches the upper surface of the bottom plate 16. lower.
In this state, as shown in Fig. 4, there is a gap between the cake and the fixed side wall, and there is also a gap e on the top of the cake, so the door 17 (one door and the other door) shown in Fig. 5 is closed. The extruder 18 extrudes the cake from the compaction 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. Further, even if the cake height h becomes large, the stroke of the consolidation cylinder 5 is only the sum of s and b, regardless of h, so that the stroke of the cylinder 5 can be significantly reduced. Also, the positioning member 1 on the top stage is where the lateral pressure that acts on the side wall during consolidation is applied.
4, the wall thickness of the side wall below it may be reduced, thus reducing weight.

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, only a small stroke is required. Therefore, the problem of buckling of the rods of the consolidation cylinder and the bottom plate support member lifting cylinder is eliminated, the price of both cylinders is significantly reduced, and the hydraulic oil for both cylinders is reduced. The amount will be significantly reduced and the hydraulic unit will also be significantly cheaper. Furthermore, since no large lateral pressure is applied below the top positioning member, no strong member is required. In particular, since the movable side wall is not required, the compression molding apparatus is made smaller and the attached parts are also simplified, 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 compression molding device, Fig. 2 is a perspective view of a cake, Fig. 3 is a partially cutaway sectional front view showing an embodiment of the present invention, and Fig. 4 is an explanatory diagram of the gap between the fixed side wall and the consolidated pulverized coal in Figure 3, and Figure 5 is the section line A-A in Figure 3.
FIG. DESCRIPTION OF SYMBOLS 1... Frame, 2... Fixed side wall, 3... Bottom plate, 4... Consolidation member, 5... Consolidation cylinder, 7...
... Fixed side wall, 8 ... Powdered coal, 10 ... Top plate, 12 ...
... Bottom plate support member, 14... Positioning member, 15...
...Bottom plate support member elevating cylinder, 16...Bottom plate.

Claims (1)

[Scope of utility model registration request] A pulverized coal consolidation apparatus that divides pulverized coal into several parts and consolidates them using a consolidation cylinder, which comprises: a bed plate support member disposed so as to be movable up and down facing the consolidation cylinder; and a number of stages of said bed plate support required for consolidation molding. and a positioning member for the component, and both side walls of the frame are fixed, and the spacing between the side walls is the same as the width of the molded cake only in the consolidation molding part, and the space below the consolidation molding part is larger than the above dimension. A compaction molding device for pulverized coal, which is characterized by its large size.