JPH0250015B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a construction method for a storage facility for lumps such as coal, and particularly to an improved technology that simplifies the dispensing system.

Conventionally, when using lumps such as coal or iron ore, a plurality of types, such as those having different particle sizes or different brands, are mixed as appropriate. Although the storage equipment in question here can be applied to a wide range of applications for storing the lumps used in this way, for convenience of explanation, the explanation below will focus on coal as the lumps. The purpose of this coal blend is to stabilize the calorific value when there are several brands of coal being handled, or to reduce the amount of coal in the coal that can cause the generation of sulfur dioxide gas in flue gas from the viewpoint of environmental conservation. The aim is to control the sulfur content of

Conventionally, as a storage method that takes such mixed coal into account, different types of coal are stored in each silo, and a separate dispensing machine is attached to the dispensing section at the bottom of each silo. The method used was to mix coal on a belt conveyor by driving each coal separately.

However, this requires a dispensing machine for each silo to dispense the stored materials in the silo, and each silo must be constructed separately, making this type of storage equipment expensive. It is undeniable that it will happen.

This invention was made in consideration of the above points, and in particular, by arranging a plurality of silos in a straight line and sharing the dispensing system for each silo, the dispensing system is simplified and the entire storage facility is improved. The purpose is to reduce costs.

Hereinafter, the contents of the present invention will be explained in detail with reference to the accompanying drawings.

First, regarding the silo to be used, as shown in Figure 1, the silo 1 used here is roughly cylindrical in shape as usual, with a receiving port 2 at the top.
However, there is also a take-out port 4 via a hopper 3 at the bottom thereof. Such a silo 1 is generally made of concrete, but here an inner lining plate 1b is attached to the inside of the concrete main body portion 1a. This inner lining is used to ensure the airtightness of the silo 1 itself or to improve the sliding of the coal.The material used for this is steel plate, stainless steel, or polyurethane resin, which has at least a higher friction coefficient against the coal than concrete. The one with the smallest value should be selected. This lining is especially necessary in the hopper 3 section, which often comes into contact with coal. Further, the number of hoppers 3 and the corresponding take-out ports 4 is set to be plural depending on the size of the silo. A space is inevitably created below the hopper 3 in such a silo 1, and a dispensing system as described later is installed in the space 5.

The storage equipment of the present invention is configured such that a plurality of such silos 1 are arranged in a straight line as shown in FIGS. 2 and 3, and a dispensing system for each of the silos 1 is shared. Therefore, not only the coal discharging system but also the receiving system are provided linearly along the arrangement direction of the silos 1. The receiving system 5 located above is a known system in which a plurality of conveyors 5a, 5b, and 5c are sequentially connected.

On the other hand, as shown in FIG. 4 in detail, the dispensing system 6 located below runs on a rail 7 that crosses each silo 1 along the arrangement direction of each silo 1, and runs on this rail 7. A self-propelled dispensing machine 8 dispensing stored material (coal) C in the silo 1 from the dispensing port 4 of each silo 1; The conveyor 9 includes a delivery conveyor 9 that delivers the coal C delivered by the machine 8 in one direction. Below, we will explain the case where each silo 1 has three outlets 4.
Correspondingly, three rails 7, three self-propelled dispensing machines 8, and three dispensing conveyors 9 are provided. However, each self-propelled payout machine 8 etc.
Regarding the outlet 4 at the same position, each silo 1 has a shared configuration. In addition, in order to make a proper mixed coal, it is important to make the ratio of the mixed coal accurate, so the self-propelled dispensing machine 8 should be one that matches this, for example, a rotating wheel with a plurality of blades 8a as shown in the figure. Good shape. With this type, the amount of cutting or discharging can be easily and appropriately adjusted by controlling the number of rotations or the cutting depth of the blade 8a.

Now, in the case of actual dispensing, in that case, the conveyance direction of each dispensing conveyor 9 is the third
The coal conveyed by each conveyor 9 set on the left side of the figure is mixed on the collecting conveyor 10 at the left end, and then supplied to demand via another conveyor 11.
On the other hand, at this time of dispensing, three self-propelled dispensing machines 8
While reciprocating in the left and right direction on the rail 7, an appropriate amount of coal is discharged from the outlet 4 of each silo 1.

Next, a preferred example of constructing the above storage facility will be described. That is, the method is to first construct the foundation 12 of the dispensing system and each silo 1, and then construct the dispensing system and each silo 1 in the following order (A) to (C).

(A) Pit part 1 including hopper 3 of each silo 1
3 in a straight line with each other.

In this case, each pit part 1 arranged in a straight line
3, it is preferable that all three silos 1 be continuous with each other, and that part be constructed of prestressed concrete.
By doing so, the cross-sectional area of the concrete frame can be made smaller, which is extremely advantageous from a structural standpoint.

(B) A rail 7 that runs across the pit portions 13 of such silos 1 along the arrangement direction;
A self-propelled dispensing machine 8 dispensing stored material (coal) C in the silo 1 from the storage material disposed in parallel with the rail 7 and across each silo 1 like the rail 7, and discharging the stored material (coal) C from the dispensing machine 8. A step of installing a delivery conveyor 9 that delivers the material (coal) C in one direction.

(C) A step of constructing the barrel portion 14 of the silo 1 on each of the pit portions 13.

When constructing the barrel portion 14 of this silo 1, it can be constructed using cast-in-place concrete, or it can be constructed using the PC board joint construction method as in the case of the pit portion 13. However, in any case, during construction, the dispensing machine 8 and conveyor 9 in the step (B) can be used for transporting materials, etc.

As explained above, in the construction method of the storage facility for lumps such as coal according to the present invention, the pit portion 13 including the hopper 3 is built in advance along the arrangement direction of the silos 1, and then the dispensing machine 8 is built. Since the cylindrical body part 14 is constructed after the conveyor 9 and the like are set, it is possible to easily construct the silos 1 arranged in succession, and it is possible to significantly reduce the construction cost. It produces excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front sectional view showing an embodiment of the silo used in the present invention, FIGS. 2 and 3 show the overall configuration of the storage facility of the present invention, and FIG. 2 is a front view; FIG. 3 is a plan view, and FIG. 4 is a sectional view of the main parts showing details of the dispensing system. 1... Silo, 1a... Concrete main body part, 1b... Inner lining board, 2... Reception port, 3...
...Hopper, 4...Takeout port, 6...Payout system, 7...Rail, 8...Self-propelled payout machine, 9
...Payout conveyor, 12...Basic, 13...
Pit part, 14...tube part.

Claims (1)

[Scope of Claims] 1. Construction of a storage facility for lumps such as coal that has a plurality of silos each having a receiving port at the top and a take-out port via a hopper at the bottom, and a discharging system shared by each of the silos. In order to
A method for constructing a storage facility for coal or other lumps, characterized in that a discharging system and each silo are then constructed in the following order (A) to (C). (A) A process in which the pit parts of each silo, which are made of prestressed concrete, including the hoppers, are constructed so that they are continuous and lined up in a straight line. (B) A rail that crosses the pits of these silos in the direction in which they are arranged, a self-propelled dispensing machine that runs on these rails and dispenses the stored materials in the silos from the dispensing port of each silo, and parallel to the rails. The process of installing a dispensing conveyor, which is placed across each silo in the same way as the rail, and dispensing stored materials in one direction by a dispensing machine. (C) A step of constructing a barrel portion of the silo on top of each of the pit portions.