JPS607355Y2 - Hotupa - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hopper shape that can be applied to general silos for storing various substances.

The lower end of a conventional hopper has a shape as shown in FIGS. 2 and 3, and the opening dimension W of the hopper discharge port 03 (one side of a square is illustrated in the figure).

) and the inclination angle α of the hopper lower inclined surface 02 were determined so that the contents flow down smoothly.

In particular, the angle α is a dominant factor in the flow of the contents, and it is obvious that a larger angle α tends to promote the flow of the contents.

On the other hand, the large angle α of the hopper makes it necessary to increase the total height of the silo for silos with the same storage capacity, and if the total height is kept constant, the internal volume will decrease.
Both have disadvantageous economic consequences.

The present invention aims to achieve both the above-mentioned flowability and capacity economy, and includes forming a plurality of recesses extending toward the hopper discharge port on the lower slope of the hopper around the hopper discharge port, and To provide a hopper characterized in that the inclination angle of each recess is larger than the inclination angle of the hopper slope.

In the hopper of the present invention, we focused on the fact that the stoppage of the flow of stored material, that is, blockage, occurs due to the balance of the flowing tendency of stored material at the hopper opening, and we focused on the fact that the stored material is Recesses with inclination angles and dimensions that always exhibit flow-down behavior in relation to the coefficient of friction, etc. are provided at appropriate intervals, and the small-scale flow that inevitably occurs in these recesses disturbs the stable state of blockage throughout the hopper opening. I tried to promote the overall flow.

An embodiment of the device of the present invention will be described below with reference to the drawings.

FIG. 4 is a plan view of this embodiment corresponding to FIG. 2, and FIG. 5 is a sectional view taken along the line -v in FIG. 4.

In conventional hoppers, the inclination angle α of the hopper's lower inclined surface is set such that the flow is not obstructed and blockage occurs even under the worst storage conditions, that is, when the particle size, moisture, etc. of the stored material are most unfavorable to the flow. A large value is selected.

As described above, if the angle of inclination α is large, it has a good effect on the flow of water, but it has the trade-off that it is inferior in terms of customer volume economy.

Furthermore, it is desired that the opening size W does not exceed a certain value in relation to the dispensing equipment.

In the hopper of this embodiment, the discharge port 3 of the hopper lower inclined surface 2
Recesses 4 are provided at appropriate intervals starting from the intersection line with the line and disappearing at appropriate positions.

In addition to the shapes shown in FIGS. 4 and 5, the shape of the recess 4 may be a rounded shape as shown in FIG. 8a or a rectangular shape as shown in FIG. 8a.

Further, FIGS. 6 and 7 show another embodiment in which the present invention is applied to a continuous hopper, and in this example, the hopper lower inclined surface 2'
Recesses 4' are provided at appropriate intervals along the elongated outlet 3'.

In this way, by selecting an appropriate value for the inclination angle α of the hopper lower inclined surface and providing recesses of appropriate dimensions at appropriate intervals, the inclination angle β of the recesses is greater than the inclination angle α, so that the tendency of the stored flow Even if the angle of inclination α is larger and fluidity cannot be activated at the inclination angle α, the vicinity of the recess can have a tendency to flow, so the flow in this area is
It becomes a trigger to cause the entire flow and can suppress the blockage phenomenon.

As a result, the effect of preventing blockage can be achieved with a small-scale shape change while maintaining the above-mentioned inclination angle α of the hopper lower inclined surface and the opening size W.

The effects of the present invention can be achieved not only with conical or pyramidal hoppers, but also with continuous hoppers as shown in FIGS. 6 and 7.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of the silo, Figure 2 is an enlarged plan view of part A of the hopper taken along the line ■-■ in Figure 1, and Figure 3 is a longitudinal cross-sectional side view taken along the line ■-■ in Figure 2. 4 is an enlarged plan view of the hopper section showing an embodiment of the device of the present invention corresponding to FIG. 2, FIG. 5 is a vertical sectional side view taken along the line V-■ in FIG. FIG. 7 is an enlarged plan view of the hopper section showing another embodiment of the device of the present invention corresponding to FIG. 2, FIG. It is a top view which shows the example of the shape of the recessed part provided. 01.1.1'...Hopper, 02,2,2'・
...Hopper lower slope, 03, 3, 3'...
・・Hopper lower discharge port, 4, 4′・・・・・・Concavity, W
...Opening size of the discharge port, W...Opening size of the recess, α...Inclination angle of the lower slope of the hopper,
β...Inclination angle of the recess.

Claims (1)

[Scope of utility model registration request] A plurality of recesses extending toward the hopper discharge port are formed on the hopper lower slope surface around the hopper discharge port, and each of the recesses has an inclination angle larger than the slope angle of the hopper slope surface. Hot.