JPS627068B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for storing powder or granular material, ie, a silo.

A typical conventional silo has a cylindrical shape with a funnel-shaped outlet or hopper suspended from the bottom of the silo. Large-scale, large-capacity silos are constructed of reinforced concrete, prestressed concrete, steel frames, etc.

The purpose of the present invention is to reduce construction material costs by creating a new structure for such large-scale silos, and to enable easy construction using commonly used techniques without requiring special techniques. It is in.

The silo of the present invention is particularly suitable for handling powders such as cement, cement raw materials, grains, feed, fertilizers, petrochemical products, etc.
It will be used as a warehouse for storing granules and adjusting shipping.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to preferred embodiments illustrated in the accompanying drawings.

The embodiment shown in FIGS. 1 and 2 is a rigid frame structure having a step-like external shape, that is, a silo. The left half of FIG. 1 clearly shows the rigid frame structure consisting of columns 1, 2, 3 and beams 4, 5, 6, 7, 8, and the right half clearly shows the base hopper 9.
This is a sectional view taken along the - line in FIG. 2.

The pillars 1, 2, and 3 each have a separate foundation 10, and are supported on the ground by distributing the load according to the stepped outer wall shape.

An outer wall portion 12 is provided on the outside of the stepped structure formed by these columns and beams. In the case of a conventional cylindrical structure, the outer wall, or structure, requires a considerable wall thickness, but in the case of this example, the strength of the structure is mainly provided by the columns and beams, and the outer wall portion is accommodated. It is only necessary to resist the pressure of the granular material. Furthermore, because of the tapered shape, the pressure applied is thought to correspond to the part of the powder that protrudes from the angle of repose of the mountain, so the pressure applied to the outer wall part is smaller than in the case of a conventional cylindrical structure. For these reasons, the wall thickness of the outer wall portion can be made considerably thinner.

The top surfaces of the beams 4 to 8 are triangular and pointed as shown in the figure to prevent the contained powder from being deposited thereon.

Although not shown, braces may be provided between the columns and the beams, or a retaining wall may be used instead of the braces.

As shown in the right half of Figure 1, there is a hopper 9 on the bottom.
The hopper 9, in which the hoppers 9 are arranged in a row, is supported on each separate foundation 11 via short pillars 13, and a discharge port 14 is arranged between the short pillars 13, and a The powder and granular material is discharged onto a provided belt conveyor (not shown). In this way, the hopper 9 is distributed over the entire bottom surface and is supported by the foundations 11, so that the contained powder and granules are distributed and borne by these foundations 11 and the foundation 10 of the structure. becomes.

The advantages of the structure of the present invention are summarized as follows.

(A) The pressure (powder pressure, granule pressure) applied to walls and structural elements (columns, beams, etc.) is small.

(B) Compared to conventional cylindrical structures, the force applied to the structure is smaller as described above, so less materials are used.

(C) Compared to conventional cylindrical structures, larger capacity can be produced when making a single piece. Also, when making multiple pieces, the number is small.

(D) Compared to conventional cylindrical structures, there is less wall space, so less material is used.

(E) Compared to prestressed concrete construction,
It does not require expensive materials such as PC steel rods or special techniques, and can be constructed using only commonly used techniques.

(F) The planar shape can be circular, rectangular, square, or polygonal.

(G) The structure may be reinforced concrete, steel reinforced concrete, steel frame, or prestressed concrete.

(H) Frame types include rigid frame structure, brace structure,
Wall-type structures and composite structures thereof are also possible.

Although the present invention has been described in detail above with reference to preferred embodiments illustrated in the accompanying drawings, the present invention is not limited to these specific embodiments and can be modified in many ways without departing from the spirit of the invention. Of course.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a silo in which the present invention is implemented;
FIG. 2 is a cross-sectional view thereof. 1, 2, 3...pillar, 4, 5, 6, 7, 8...
Beam, 9...Hotsupa, 10,11...Foundation, 12...
...Outer wall part, 13...short pillar, 14...exhaust port.

Claims (1)

[Claims] 1. By tapering the base in a stepped or sloping manner toward the top to reduce the pressure of the contained powder and granular material applied to the wall surface, and by providing the strength of the structure with columns and beams. A structure for storing powder and granular material, characterized in that the wall thickness of the outer wall portion is considerably thin. 2. The structure for storing powder or granular material according to claim 1, wherein the entire bottom surface of the base is formed by a plurality of aligned and self-supporting hoppers.