JPH0229570B2 - SUTOTSUKUYAADONOBARAMONOHARAIDASHISOCHI - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for discharging bulk materials from a stockyard, and in particular, the present invention relates to a device for discharging bulk materials from a stockyard, and in particular, a funnel-shaped bottom having an inclination greater than the angle of repose for withdrawing bulk materials is formed to remove bulk materials from a stockyard. By moving items to the outlet by their own weight and conveying them to the ground using an inclined conveyor, dead space in the stockyard can be eliminated and items can be delivered effectively.

[Conventional technology]

Conventionally, when building storage and unloading facilities for bulk materials such as ore, crushed stone, grain, etc., if there is no problem with the stacking height, stock piles are formed on the ground for storage as shown in Figures 2 and 3. It was normal to do so.

That is, bulk materials are transported to a stockyard 3 in a shed by a receiving device 1, and are stacked forming a conical stockpile 4 forming a stowage angle of repose α. In order to take out bulk materials from the stock pile 4, pull-out conveyors 5a and 5b are provided in the above-ground pit 6, and are configured to supply the loose materials pulled out by the feeder 8 from the pull-out port 7 to the pull-out conveyors 5a and 5b. There is.

However, since the discharge of bulk materials is regulated by the withdrawal angle of repose β, a large number of withdrawal ports 7 are required for effective discharge, which requires a large number of feeders 8 and withdrawal conveyors 5a, 5b. and ground pit 6
must be established. On the other hand, if the number of outlet ports 7 is reduced, the residual amount increases and the effective storage amount decreases.

Therefore, by increasing the effective storage capacity of the stockyard 3 and eliminating the need for the drawer port 7, the drawer conveyor 5
In order to reduce the cost of equipment such as a, 5b and feeder 8, the stockyard 3 is dug down to form a funnel-shaped bottom 9 as shown in Fig. 4, and loose materials are scraped out by a scraper conveyor 10 that can be elevated. A dispensing device (see Japanese Unexamined Patent Publication No. 165833/1983) has been proposed.

[Problem that the invention seeks to solve]

However, in the case where the stockyard 3 is excavated in a funnel shape and the scraper conveyor 10 is used for discharging, the scraper conveyor 10 cannot be operated at the same time while the receiving device 1 is in operation.
In addition, the scraper conveyor 10 that can be elevated and can scrape up loose materials along the top surface of the funnel-shaped bottom 9 of the stockyard 3 is a large-scale facility.
Along with this, there is a problem in that the building that supports the scraper conveyor 10 also becomes larger. In the underground pit method, as mentioned above, in order to effectively dispense the waste, the number of underground pits, the number of pull-out conveyors, and the number of feeders are increased, resulting in an increase in the scale of civil engineering work and mechanical equipment.

The present invention solves such problems in bulk material dispensing devices.

Therefore, this invention reduces the number of outlet ports,
An economical stockyard that reduces equipment such as underground pits, feeders, and pull-out conveyors, does not require an elevation scraper, and can be unloaded even when the receiving equipment is in operation.The effective storage capacity is large and the area of the stockyard can be reduced. The purpose of this invention is to provide a dispensing device.

[Means for solving problems]

In the stockyard dispensing device of the present invention, the stockyard is dug down to form a funnel-shaped bottom having an inclination equal to or greater than the withdrawal angle of repose of the bulk materials to be deposited;
An outlet is provided at the lowest part of the funnel-shaped bottom, and an inclined conveyor is installed along the lower surface of the funnel-shaped bottom for transporting loose materials from below the outlet to the ground.

[Effect]

Since the outlet is provided at the bottom of the funnel-shaped bottom with a slope greater than the angle of repose of the bulk material, the bulk materials flow down under their own weight, collect at the outlet, and are transported to the ground by an inclined conveyor from the outlet. . Therefore, there is no residual bulk material that cannot be discharged in the stockyard, and the bulk materials can be discharged even while the receiving device is in operation.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing the configuration of a stockyard dispensing device according to an embodiment of the present invention.A shed 2 and receiving equipment 1 such as a belt conveyor are installed on the stockyard 3. The cargo transported by this receiving facility 1 is dropped into a stockyard 3 and forms a stockpile 4 at a stowage angle of repose α. Therefore, stockyard 3
is dug down to form a funnel-shaped bottom 9,
The funnel-shaped bottom 9 has an inclination greater than the angle of repose β for pulling out the bulk materials deposited in the stockyard 3. A draw-out port 7 is provided at the lowest part of the funnel-shaped bottom 9, and a feeder 8 installed below the draw-out port 7 allows an arbitrary amount of bulk material to be drawn out. As the loose materials are pulled out from the lower outlet 7, the loose materials accumulated on the upper part naturally flow down under their own weight and collect at the outlet 7 one after another.

Inclined pit 11 along the lower surface 9a of the funnel-shaped bottom 9
is provided from below the outlet 7 to the ground.
An inclined conveyor 12 is installed along the outlet 7 to transport bulk materials to the ground. Since this inclined conveyor 12 is laid at an inclination of more than the angle of repose β for pulling out bulk materials, the flex belt conveyor 12
Belt conveyor with crosspiece, belt conveyor with fin,
A conveyor suitable for steep slope transportation, such as a double belt conveyor or a scraper conveyor, is used.

A delivery conveyor 13 is installed on the ground.
The loose materials carried out by the inclined conveyor 12 are discharged.

In the stockyard 3, a storage silo may be provided instead of a shed, or the material may be deposited in the open air.

〔Effect of the invention〕

As described above, according to the present invention, the bulk materials stored in the stockyard naturally flow down to the outlet, so that almost the entire amount can be discharged, and the installation area can be reduced by making effective use of the stockyard. , the pit length is short, and the required number of outlets, feeders and conveyors can be reduced, and civil engineering work and machinery equipment costs can be saved. Furthermore, receiving and discharging operations can be performed simultaneously, which has the effect of increasing the operational efficiency of the entire facility.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing the configuration of a stockyard dispensing device which is an embodiment of the present invention, and FIGS. 2 and 3 are illustrations of the elevational and planar configurations of a conventional underground pit type dispensing device. 4A and 4B are explanatory diagrams of the configuration of a lifting-up scraper conveyor scraping type dispensing device. In the figure, 1 is a receiving device, 2 is a shed, 3 is a stockyard, 4 is a stock pile, 7 is an outlet, 8 is a feeder, 9 is a funnel-shaped bottom, 11 is an inclined pit, 1
2 is an inclined conveyor.

Claims (1)

[Claims] 1. A stockyard is dug down to form a funnel-shaped bottom with an inclination equal to or higher than the angle of repose for pulling out the bulk materials to be deposited, and an outlet is provided at the lowest part of the funnel-shaped bottom, and the bulk materials are removed from below the outlet to the ground. A bulk materials dispensing device for a stockyard, characterized in that an inclined conveyor for conveying materials is installed along the lower surface of a funnel-shaped bottom.