JPH08143162A - Coal storage equipment - Google Patents

Abstract

PURPOSE: To reduce flying of coal dust and to prevent the occurrence of coal dust explosion by providing a plurality of impact preventing plates with which coal dropping in a silo, from the upper part of which coal is charged, is collided. CONSTITUTION: Impact preventing plates 19a-19d... are arranged in a position where coal 8 is collided with the inner central part of a coal storage silo 1 during the drop of the cola 8. The impact preventing plates 19a, 19b; 19c, 19d;... are arranged in such a manner that lower ends are slightly overlapped with each other, as seen from above, the impact preventing plates 19a, 19c... are placed in the same position, as seen from above, and the impact preventing plates 19b, 19d... are arranged in the same position, as seen from above. Further, a plurality of reinforcing plates are vertically arranged at the impact preventing plates 19a, 19c...; 19b, 19d to reinforce a strength during the drop of coal and during discharge from below. Further, the impact preventing plates 19a, 19b; 19c, 19d, making a pair, are inclined in such a manner that lower parts approach each other at an angle slightly higher than the angle of repose of coal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coal storage facility capable of reducing the amount of generated coal dust in a silo.

[0002]

2. Description of the Related Art Conventionally, a so-called silo system in which coal is charged from the upper part of a building and discharged from the lower part is often used as an indoor storage method of coal. This silo method
Since it is possible to fill almost the entire volume of the building with coal, it has high utilization efficiency of the site, and it has the advantage that almost no mechanical equipment other than belt conveyors is required for delivery and receipt of goods. ing.

FIG. 4 is a schematic plan view of a conventional silo type coal storage facility. 1 in the figure is a coal storage silo that stores coal. There are many coal storage silos 1 arranged according to the site. Reference numeral 2 is a belt conveyor for transporting the loaded coal to each coal storage silo 1. In addition, a space 3 is provided between the coal storage silos as a safety measure between the coal storage silos, assuming spontaneous combustion.

FIG. 5 is a three-dimensional view of the upper part of the above coal storage facility. Reference numeral 4 in the figure is a self-propelled dispenser capable of dispensing coal at any position of the coal storage silo 1, which is driven by a motor 5. It can be moved in the direction of arrow 6 by forming a pair with the belt conveyor 2. Reference numeral 7 is a hopper for placing the loaded coal on the belt conveyor 2.

FIG. 6 is a sectional view of the above coal storage facility. The coal 8 is conveyed by the belt conveyor 2, dropped from the payout machine 4 at an arbitrary position above the coal storage silo 1, and accumulated and stored in the coal storage silo 1. The coal is dispensed from a dispensing port 10 provided in the lower hopper 9. Reference numeral 11 indicates the state of accumulation of coal 8 in the coal storage silo 1, and reference numeral 12 indicates methane gas generated when the coal 8 is accumulated and stored. Numeral 13 sucks into the coal storage silo 1 so that dust generated when it is conveyed by the belt conveyor 2 does not float in the belt conveyor chamber 14, and dust generated when the coal 8 is dropped and methane gas 12 generated when coal is stored.
Is an air supply port installed for forcibly guiding the air to the ventilation port 15 provided in the intake duct 16 so as not to stay.
Dust and methane gas 12 are collected through a ventilation port 15 and an intake duct 16. In the figure, 18 shows the flow of pulverized coal.

[0006]

In the conventional coal storage facility described above, the coal 8 dropped from the dispenser 4 is accumulated and stored in the coal storage silo 1 as indicated by reference numeral 11. The amount of coal dust generated by the fall of the coal 8 increases as the drop height increases. Therefore, the drop height increases at the time of initial charging when the amount of coal 8 deposited is small, and the amount of coal dust generated increases and the amount of pulverized coal decreases. It is possible that it may float in the coal storage silo 1 and cause an adverse effect on a coal dust explosion or the like.

The present invention is intended to provide a coal storage facility capable of solving the above problems.

[0008]

A coal storage facility according to the present invention is characterized in that a plurality of impact preventing plates against which falling coal hits a silo into which coal is loaded from above is provided.

[0009]

According to the present invention, since a plurality of impact prevention plates against which falling coal hits is provided in the silo into which coal is charged from the upper part of the coal storage facility, the amount of coal dust generated by falling coal is reduced. Further, the impact height of the coal is reduced by the impact prevention plate, and it is possible to sufficiently reduce the scattering of coal dust of large and medium particle size. This makes it possible to prevent a coal dust explosion or the like.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 3, parts indicated by reference numerals 1 to 18 are the same as the conventional device shown in FIGS.

Numerals 19a, 19b, 19c, 19d ... are shock-preventing plates provided in the central portion of the coal storage silo 1 at positions where the coal 8 hits when the coal 8 falls, and a plurality of them are installed in the height direction. There is. This impact prevention 19a, 19b; 19
, c, 19d; extend along the length direction of the coal storage silo 1, are arranged so that their lower ends are slightly overlapped when viewed from above, and are arranged slightly offset in the vertical direction to form a set of two sheets. And a pair of shock prevention plates 19a, 19
b; 19c, 19d; ... are arranged in the vertical direction, the shock prevention plates 19a, 19c, ... Are placed at the same position when viewed from above, and the shock protection plates 19b, 19d ... Are viewed from above. They are in the same position. The impact prevention plates 19a, 19c ...; 19b, 19d are provided with a plurality of vertical reinforcing plates 20a, 20b for reinforcing the strength when the coal is dropped and when the coal is discharged from the lower part. Furthermore, each of the shock prevention plates 19a, 19b forming a pair;
19c and 19d are angles θ slightly larger than the angle of repose of coal.
The lower parts are inclined so that they approach each other.

In this embodiment, the self-propelled dispenser 4 above the coal storage facility is self-propelled, and the coal 8 is dispensed by the dispenser 4.
It is conveyed by the belt conveyor 2 and is dropped from the upper part of the coal storage silo 1 at an arbitrary position. Since the impact prevention plates 19a, 19b, 19c, 19d, ... Are inclined at an angle θ slightly larger than the angle of repose, the falling coal 8
Hit the impact prevention plates 19a, 19b, 19c, 19d ... And fall along them without accumulating. Coal 8
1 proceeds and overflows from the shock prevention plate 19d as indicated by reference numeral 21 in FIG. 1, the coal 8 falls at any time while maintaining its angle of repose and is deposited in the coal storage silo 1.

As described above, in this embodiment, the impact when the coal 8 falls is caused by the impact prevention plates 19a, 19b, 19c, 1
It is possible to reduce the amount of coal dust generated by the fall of coal due to 9d ... In addition, the impact prevention plate 19
The falling height of the coal 8 is reduced by a, 19b, 19c, 19d, ..., It is possible to sufficiently reduce the scattering of coal dust of large and medium particle size. Therefore, according to this embodiment, coal dust explosion of coal can be effectively prevented.

[0014]

According to the present invention, since a plurality of impact prevention plates against which falling coal hits is installed in a silo into which coal is loaded from above, the amount of coal dust generated when coal is dropped is reduced. Explosion can be prevented.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a detailed view of the impact prevention plate of the embodiment.

FIG. 3 is a side view of the embodiment.

FIG. 4 is a schematic plan view of a conventional coal storage facility.

FIG. 5 is a three-dimensional view of the upper part of the conventional coal storage facility.

FIG. 6 is a sectional view of the conventional coal storage facility.

[Explanation of symbols]

 1 Coal storage silo 8 Coal 19a, 19b, 19c, 19d Impact prevention plate 20a, 20b Reinforcing plate

Claims (1)

[Claims] 1. A coal storage facility comprising a plurality of impact prevention plates against which falling coal hits a silo into which coal is loaded from above.