JPS6410412B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an upper hopper, a lower hopper, and other loading/unloading devices for loading and unloading stored materials into and out of a silo.

In order to improve the efficiency of loading and unloading stored items, the silo wall is made into a cylindrical shape, a pillar is set up in the center of the silo wall, and a beam that spans between the pillar and the wall and rotates around the pillar. By using a scraping device that can be raised and lowered to gather stored materials in a radial direction around the pillar, it is possible to limit the hopper for loading and unloading to the center of the silo. A silo is known. (For example, Japanese Patent Publication No. 48-10579) In addition, in a silo, in order to prevent dust from scattering, a chute that expands and contracts depending on the height of the stored material is usually installed below the upper hopper.

However, in the above-mentioned known silo, the chute cannot be installed in a fixed position because it intersects with the beam rotating inside the silo, and the chute must be installed concentrically on the outside of the column or rotated together with the beam. . In all of these cases, an annular passage portion (fourth
A connecting chute with a diameter of 9" (as shown) must be provided.

Conventionally, as shown in FIG. 4, the upper hopper and the pillar were provided at different positions, so one end connecting the upper hopper 5 and the annular passage section 9'' was concentrically penetrated through the pillar. An inclined chute 9' with a larger diameter was used, but since it is a bent pipe and the cross section changes from circular to donut shape,
Not only was it easy for stored items to become clogged, but the flow of stored items was also uneven.

On the other hand, the lower hopper for unloading provided at the bottom of the silo has conventionally been provided at a different position from the pillar, that is, eccentrically from the center of the silo, resulting in poor efficiency.

The present invention has been made to solve these drawbacks and makes it possible to arrange the hopper concentrically with the column and omit the inclined chute 9' connected to the lower part of the hopper.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of the present invention, in which a pillar 2 is erected at the center of a silo having a cylindrical peripheral wall 1, and the upper part thereof is a relatively large gusset plate for reasons to be described later. It is connected to the roof beam 12 via 20. Furthermore, pillar 2 and wall 1
Brackets 10 and 10' are provided on the upper part of the bracket, and a beam 3 that rotates around the pillar 2 is spanned between these brackets, and a scraping device 4 below the bracket is connected to a wire or the like.
1 allows it to be hung up and down freely. The raking device 4 turns as the beam turns, and at each turning position serves to scrape the upper surface of the stored material in the radial direction of the silo around the column.

Now, the most distinctive feature of the present invention is that the hoppers 5, 5' and the pillars 2 are combined.
That is, the hoppers 5, 5', which are normally in the shape of an inverted truncated cone surface, are arranged so as to pass through the column 2, and the lower opening thereof is an annular opening surrounding the column 2.

In addition, when this hopper 5 is provided at the upper part, it usually intersects with the roof beam 12, so that part is covered with something narrow, for example, the gusset plate 2.
0 so that there is no problem with the falling of stored items.

Next, the specific operation of the apparatus shown in this embodiment will be explained according to the flow of stored items.

The stored items that have fallen from the conveyor 22 on the roof beam 12 pass through the upper hopper 5 and are transferred to the annular table 14.
temporarily deposited on top.

and independently or as shown in FIG.
Due to the scraping blade 13 rotating as the beam 3 rotates, the scraping falls from the edge of the table 14 again, passes through the chute 21, and is deposited on the silo bottom 23.
Since the shape of this deposit is like a stratovolcano with pillars at its center, it is leveled in the radial direction by the scraping device 4 and spread evenly over the entire surface of the silo.

On the other hand, in the silo bottom 23, the lower end of the column 2 is enlarged in diameter into a trapezoidal shape, and a lower hopper for discharging stored material is formed by an inverted conical surface that is separated from and surrounds the lower end of the trapezoid. 5', the store filled therein is prevented from unrestricted outflow by a shelf 15 projecting from the bottom of the column 2. When the stored items are to be taken out from here, they are dropped onto the annular rotary table 18 below by the scraping blades 17 that rotate on the shelf 15 due to the rotation of the ring-shaped scraping device 16. When this annular rotary table rotates, the stored items fall onto the conveyor 22' by the fixed scraping plate 19 at the upper part of the conveyor 22' and are carried out. Needless to say, in response to this unloading, the stored items in the silo are scraped onto the hopper 6 by the scraper 4.

As described above, in the present invention, since the annular groove-shaped hopper is formed concentrically with the column, it is possible to solve the problem of loading and unloading due to eccentricity of the hopper.

If the outer surfaces 7, 7' of the pillar 2 at the positions where the upper hopper 5 and the lower hopper 5' are inserted are conical or truncated, the receiving area of the upper opening of the hopper can be increased, and the inside shape of the hopper can also be annular V-shaped.
Good shape of letters can be obtained.

In addition, when the dispensing device 9 has a structure in which the stored items on the annular table 14 are dispensed by the scraping blades 13 that rotate according to the rotation of the rotating beam 3, the dispensing and scraping operations of the scraping device 4 are performed together. can be made to work.

Next, FIG. 2 shows another embodiment in which stored materials are supplied to the bottom of the silo regardless of the rotation of the rotation beam 3.

That is, in the second embodiment shown in FIG. 2, the connecting chute 9 directly connected to the lower end of the upper hopper 5 is provided coaxially through the column outer periphery, and the chute 21 connected to this lower end is also connected to the column outer periphery. By coaxially penetrating the first
As in the embodiment, it is possible to eliminate the problem of loading due to eccentricity of the hopper.

[Brief explanation of the drawing]

FIG. 1 is an overall longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view showing a main part of another embodiment of the invention. FIG. 3 is a partial longitudinal sectional view of a conventional silo. FIG. 4 is a - sectional (plan) view of FIG. 3. 1: Silo surrounding wall, 2: Column, 3: Rotating beam,
4: raking device, 5: upper hopper, 5': lower hopper, 6, 6': annular opening, 7, 7': outer surface of column, 8, 8': dispensing device, 8'': cylindrical body, 9: connection Chute, 9': Inclined chute, 9'': Annular passage portion, 10, 10': Bracket, 11: Wire,
12: Roof beam, 13: Scraping blade, 14: Annular table, 15: Shelf, 16: Ring-shaped scraping device, 17: Scraping blade, 18: Annular rotary table, 19: Fixed scraping plate, 20: Ga Set plate, 21: chute, 22, 22': conveyor, 23: silo bottom.

Claims (1)

[Claims] 1. The peripheral wall 1 is cylindrical, and has a scraping device 4 suspended from a beam 3 that pivots around a pillar 2 erected at the center of the bottom 23, and has an opening at the lower end of the upper hopper 5. In this silo, the upper hopper 5 is formed into an inverted trapezoidal shape and is inserted concentrically into the upper end of the column 2. A silo loading/unloading device characterized in that the lower end opening of the hopper is formed in an annular shape around the outer periphery of the column. 2. The diameter of the lower end of the column 2 is enlarged into a trapezoidal shape, and a lower hopper 5' for discharging stored material is formed by an inverted frustum surface section that is separated from and interfering with the lower end of the trapezoidal shape. The silo loading/unloading device according to claim 1, characterized in that: 3. The dispensing device 8 includes an annular table 14 attached to the pillar 2 and a scraping blade 13 fixed at an upper part of the chute 21 attached to the swing beam 3. The silo loading/unloading device according to paragraph 2. 4 The connecting chute 9 and the chute 21
The silo loading/unloading device according to claim 1 or 2, wherein the pillars 2 are inserted concentrically into the pillars 2 to form a tubular space inside.