JPS5852070A - Method of changing helicoidal silo inot mass-flow - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for converting a helicoidal silo into a mass φ flow.

What is a helicoidal silo? Gold w4# arranged in concentric circles as shown in s tm 1 to Ig 6! 2 Arashi Enseki outside 1i! ! ! (consisting of an outer cylinder wall (υ) and a cylinder (2), and a spiral partition between the outer cylinder wall (υ and the inner cylinder m) with a diameter of 6 to 1 minutes (a special shape partitioned by stems and used as a storage room). It is a silo - for example, the silo outward facing wall <1) and the spiral body vJ!m (
The inclination angle of the joint with 1 is go@, and the inclination angle of the retraction part between 1 circle identical (2) and the spiral partition - (3) is 79.1"
, thereby making that one storage chamber (4) outward-facing.
(1) and P-3 tube ship e) crystal type crab, spiral partition with positive chain side - (8 people) i.e. bottom wall, and spiral partition wall with negative slope (8B) i.e. It is composed of four sides with ceiling tiles. Furthermore, the spiral body VJ-, which has a negative slope, has a positive slope in the next room! 1
It becomes a T71-shaped partition wall. A storage room with such a configuration (4
) A hopper part υ) is provided at the lower end, and the hopper part (
5) from the lower end of the outer wall (1) to the inner cylinder 1e (2
Hopper outer wall (
6) and the hopper-wall (8) that deflates toward the outlet (7).
) and (9), and the inner wall (2), and the hopper mts
) t - Deflector further narrowing towards the discharge port (7) -
)(c) is provided. However, since the helicoidal silo has the storage chamber shape as described above, the discharge of the stored powder O is in the storage chamber (4) as shown by the arrows in Figures 8 to 6. Part of the corner formed by the vertical circular solid wall (phantom and spiral partition with negative slope (8B))
There was a drawback that the funnel flow (funnel-shaped) discharge only discharged downward.

The present invention aims to eliminate the above-mentioned drawbacks, and a convex powder flow control plate with an inclination is extended from the circle j1w side of the helical coidal silo toward the hopper wall side, and the bI fertilization control By forming a gap between the plate and the hopper wall, a method is provided in which the flow of stored powder and granular material discharged from the gap is made into a mass flow.

The method of the present invention will be explained in detail below based on the drawings showing one embodiment thereof. F'3 of the helicoidal silo is indicated by hatching in Figure 1 in Figure 6 and Figure 7.
m W From (2), part of the hopper (5) outside the hover WI
Attach the powder flow control plate (b) by extending it toward (・). The installation angle (angle of inclination) of the flow@goita trout is generally the same as the hopper angle, and the gutted control plate (b) is convex (part of a conical shape) with respect to the concave shape of the hopper outer wall (2). do. The gap casting formed by the flow frill plate (b) and the outer flanges (6) is as shown in Figure 8.
For IIA turning with a positive slope! (8A) A spiral partition wall with a wide gap and a negative slope (the IB shoulder should be narrow. However, depending on the physical properties of the storage powder (2) (inner m*sardine angle, wall surface jliJ angle, etc.), Flow control n board (b)
The installation angle of the hopper may be different from the hopper angle, or the gap) may be parallel to the hopper angle. The area below the installation position of the flow control plate (b) may be maintained as part of the original hopper (5), or the overall height of the silo body may be kept low by eliminating the lower part. ,in this case,
When the discharge of stored powder and granular material (2) is started, regardless of the amount of discharge, the stored powder and granular material (2) is removed from the entire gap (2).
) is a prerequisite for mass flow discharge. Therefore, the method of squeezing from the elongated gap (6) to the discharge port (7) is the key.

An example of a case where mass flow can be achieved will be explained based on Figures 9 to 1st. As shown by the arrow in FIG. 9, when mass flow is achieved, the stored powder and granular material (2) as a whole descends and is properly discharged. This is the first
Figure 1 and the fil of the stored powder and granules in the first stage! The relationship between the / position and the change in the vertical descent speed of the stored Im powder and granules at the upper part of the hopper will be explained based on the cause of hail. Each symbol in the figure corresponds to the symbol of the powder at each corner of the storage chamber (4) shown in Fig. 10 (a), and the width of the gap 4 is as shown in Fig. 10 (Φ). has a negative slope! 1 Spiral partition W where the spiral partition wall (JIB shoulder transponder) has a positive slope! (Hatajin's -C2x Offshore l/g. Figure 11 shows the case where the installation angle of the flow Na1l board trout is the same as the hopper angle, and the flow control board -
Spiral partition wall with a positive installation angle (8A)
The acupuncture needle is the same as the hopper angle, but with a spiral partition wall with a negative slope (gradually becoming gentler towards the JIB shoulder).

In other words, in this relative, only the part of the corner formed by the stacked inner cylinder wall (3) and the spiral partition (8B) with a negative slope is always stored regardless of the %I4. While the granules in some other corners are well annihilated with a moderate fast descent, the vertical downward movement is slower than the granules in some of the corners, and the residual height may be low. It can be seen that when the temperature is low, the descent m degrees also decreases. On the other hand, in the case of the ltg diagram, the stored granules in a part of each corner have a vertical descent velocity more evenly than in the case of the cocoon 11 diagram, and even when the residual height is low, the vertical descent velocity is lower than that of the 411 diagram. Faster. However, 1 is
As can be seen by comparing these two figures, the attachment of the flow control plate Q4 is delicate and changes depending on the granular material (b) to be stored.

As described above, according to the method of the present invention, the circle i of the helicoidal silo
Above all, install a convex powder flow control plate that slopes toward the hopper wall to control the flow of the powder. 1
Since the stored powder and granules are discharged from the gap formed between the JIl board and the hopper wall, it is much easier to mass discharge the conventional helicoidal silo, which uses funnel flow discharge.
Try to drain the flow.

[Brief explanation of the drawing]

m13 is a schematic partially cutaway perspective view of the helicoidal silo. Figure 2 is a partial plan view of the helicoidal silo, and Fig. 6 is a partial plan view of the helicoidal silo.
Figure 8 is a schematic plan view, Figure 4 is a fI4 view of one storage chamber, and Figure 6 is a longitudinal ml view of the storage chamber. ~li% 1
Figure 2 shows a drawing for explaining the method of the present invention, and Figure 6 shows the flow! A plan view of the foreshadowing with the fill plate attached, Figure 7 is a round vertical i1i saw diagram, @ Figure 8 is a diagram showing the gap, and Figure 9 is a vertical sectional side view of the storage chamber to explain the flow of powder and granules. , 4110-) is a plan view for explaining symbols, ml@
(b) is an explanatory diagram of the size of the gap, and Figure 1 and Figure 12 are diagrams showing the relationship between the residual height of the powder and the direct descent speed of f. (1)--outside*m, (ri--cylindrical!l!, (sun-spiral partition wall, (5)--hof/f-m, α◆--powder flow control plate, 4-Gap Agent Yoshihiro Morimoto Figure 1

Claims (1)

[Claims] 1. In a helicoidal type silo, a convex convex powder flow control plate with an inclination is extended from the inner taum toward the hopper wall, and from the gap formed between the flow control plate and the hopper wall. A method for converting a helicoidal silo into a mass flow, characterized by converting the flow of discharged storage powder into a mass flow.