JPH047112Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Industrial application field) This invention is a method for storing powder such as soybean meal, Hypro soybean meal, rapeseed meal, etc., and taking it out from the discharge port at the bottom. Regarding a silo for storing granules.

(Prior Art) Conventionally, a silo for storing powder and granular materials has a hopper-shaped part provided at the lower part of the cylindrical silo main body, and has a discharge port at the lower end. An inlet cover is attached above the outlet in the shape of a cross on a plane, and gas is blown out from a number of outlets formed in the inlet cover.

(Problem to be solved by the invention) In the above silo, the cross-shaped intersection of the inlet cover is located above the center of the discharge port, so depending on the physical properties of the powder, a crosslinking phenomenon may occur, causing the powder to may become an obstacle to the discharge of

In addition, with a cross-shaped inlet cover, gas is blown out from one horizontal surface, which tends to result in insufficient gas diffusion within the silo.
When the silo diameter becomes large, it becomes difficult to achieve sufficient fumigation.

The purpose of this invention is to prevent the occurrence of cross-linking of stored materials, to ensure stable discharge, and to uniformize the diffusion of fumigation gas into the silo. It is.

[Structure of the idea]

(Means for Solving the Problems) The present invention provides a powder storage silo in which a hopper-shaped part having a discharge port at the lower end is provided in the lower part of the silo body, in which the upper and lower sides of the inclined inner wall surface of the hopper-shaped part are A plurality of elongated inlet covers each having a triangular cross-section apex formed on a rectangular cross-section base are installed in the direction, and a plurality of gas outlets are formed at intervals on both sides of the base of the inlet cover,
A gas guide member having an upwardly constricted portion is provided inside each gas outlet, and a gas supply pipe is connected to the lower part of the inlet cover.

(Function) In the present invention, when fumigating the powder and granular material in the silo body 1, the fumigation gas is supplied to each gas supply pipe 2.
3 into the lower part of each inlet cover 15.

Then, the gas supplied to the lower part of each inlet cover 15 rises, passes through the constriction part 21 in the gas guide body 19, flows backward downward outside the constriction part 21, and is blown out from the gas outlet 18.

At this time, since the gas outlets 18 are formed at intervals from the bottom to the top in each inlet cover 15, the gas is evenly diffused from the center to the outer periphery of the hopper-shaped portion 4.

In addition, when discharging the powder and granular material in the silo body 1,
The inlet cover 15 is provided vertically along the inclined surface of the hopper-shaped portion 4 and is not above the discharge port 11, and the inlet cover 15 has a triangular cross-section apex 17 on a rectangular cross-section base 16. Because of this provision, the discharge of the stored material is not hindered and can be discharged stably, and no cross-linking phenomenon of the stored material occurs.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In Figures 1 to 3, reference numeral 1 denotes a vertical cylindrical silo body, the lower part of which is supported by a support frame 2, and is erected, and the input port 3 is opened at the upper end. . Further, a hopper-shaped portion 4 is formed at the lower part of the silo main body 1. This hopper-shaped portion 4 is connected to a vertical peripheral wall 5 of the silo body 1.
A semi-elliptical boundary line (welded part) 6 on the lower front and rear circumferential surfaces of
A flat plate-shaped sloped surface plate 7 with a steep angle is formed in which the front-to-back distance gradually narrows toward the bottom, and the hopper-shaped portion 4 is narrow in the front-to-back direction and vertical in the left-right direction. It consists of a circumferential wall 5 of a shape.

Further, in the lower part of the hopper-shaped part 4, on both left and right sides of the part narrowed by the front and rear inclined plane plates 7, a flat plate inclined downwardly and inwardly through a semicircular boundary line (welded part) 8 is provided. In addition, two mountain-shaped inclined plates 10 are provided between the left and right small inclined plates 9, and three discharge ports 11 are provided at the lower end of the hopper-shaped portion 4. It is divided and formed.

A delivery gutter 12 is formed horizontally in communication with the lower part of each discharge port 11, and each discharge port 11
A discharge gate 13 is provided at the lower end of the discharge gate 13 so as to be openable and closable. Note that, although not shown in the drawings, a chain conveyor or the like for discharging is disposed within the delivery gutter 12.

Front and rear sloped plates 7 in the hopper-shaped portion 4
Further, elongated inlet covers 15 are attached in the vertical direction on the inner wall surfaces of the left and right slightly inclined surface plates 9. In this embodiment, two inlet covers 15 are provided at intervals on the front and rear sloped plates 7, and a horizontal inlet cover 15a communicates between the lower ends of the front and rear facing plates. In addition, one plate is provided in the center of each of the left and right slightly inclined plane plates 9.

As shown in FIGS. 4 to 6, the inlet cover 15 has a base 16 having a rectangular cross section, and an apex 17 formed on the base 16 with a triangular cross section. A plurality of gas outlets 18 are formed at predetermined intervals on both sides of the base 16 of the inlet cover 15 at opposing positions on both sides, and a gas guide body 19 is provided inside each gas outlet 18. It is being This gas guide body 19 has guide walls 20 whose spacing is gradually narrowed upward and inward from both inner surfaces of the base 16, and parallel extensions are provided from the upper ends of the pair of guide walls 20. A constricted portion 21 is formed that extends upward. Note that the horizontal inlet cover 15
A is also configured to have the same shape as the inlet cover 15 having an inclined surface.

At the bottom of each inlet cover 15, each gas supply pipe 23 branched from the gas main pipe 22 is installed.
is connected to the opening.

In this way, granular materials such as soybean meal, Hypro soybean meal, and rapeseed meal are stored in the silo main body 1 up to the height shown by the chain line. When fumigating the powder, fumigation gas is sent from the gas main pipe 22, and this gas is introduced into the lower part of each inlet cover 15 through each gas supply pipe 23. At this time, the gas supplied to one of the front and rear inlet covers 15 is supplied to the opposite inlet cover 15 through the horizontal inlet cover 15a.

Then, the gas supplied to the lower part of each inlet cover 15 rises and flows from between the pair of guide walls 20 in the gas guide body 19 to the constricted part 21 of the extension part.
The gas passes through the gas outlet, flows backward downwards outside the gas outlet, and is blown out from the gas outlet 18.

At this time, since the gas outlets 18 are formed at intervals from the bottom to the top in each inlet cover 15, the gas is evenly diffused from the center to the outer periphery of the hopper-shaped portion 4.

Furthermore, since the gas guide body 19 is located inside each gas outlet 18, powder and granules do not enter into the inlet cover 15.

Further, when discharging the powder and granular material in the silo body 1, when the three discharge gates 13 are opened at the same time, the powder and granular material is discharged from each discharge port 11. At this time, the inlet cover 15 The inlet cover 15 is provided vertically along the inclined surface of the inlet 4 and is not above the discharge port 11, and since the inlet cover 15 has a triangular cross-section top 17 on a square cross-section base 16, it is difficult to discharge stored materials. It can be discharged stably without interfering with the process, and no cross-linking phenomenon of stored substances occurs. In addition, the lower part of the silo main body 1 is formed by the front and rear inclined plane plates 7 and the left and right small inclined plane plates 9. , since the boundary line 8 between the left and right small inclined plane plates 9 has heights as shown in FIGS. 1 and 2, and is in contact with the curved surface in a plane, the boundary between the vertical plane and the conical plane is on the same plane. Since the water is unbalanced, no bridging phenomenon occurs at the boundary lines 6 and 8, and the water flows smoothly along the flat, wide-area front and rear steeply sloped face plates 7. Also, due to the difference in flow between the powder and granules flowing down along the front and rear steeply angled slope plates 7 and the powder and granules flowing down along the vertical plane to near the lower end between the front and rear slope plates 7. Crosslinking phenomena are prevented. Furthermore, since the front and rear surfaces of each outlet 11 are formed by a part of a series of flat inclined plane plates 7 from above, and there is no boundary line in the same plane as the upper end edge of the inclined plate 10, each outlet 11 The powder and granular material can be smoothly flowed down from each discharge port 11 without causing a crosslinking phenomenon. The powder and granular material flowing down from each discharge port 11 falls into a lower delivery gutter 12 and is sent out by a conveyor (not shown).

Next, in the embodiment shown in FIGS. 7 and 8, an inverted conical hopper-shaped part 4 is formed at the lower part of the cylindrical silo main body 1, and a discharge port 11 is formed at the center of the lower end of this hopper-shaped part 4. In this case, a plurality of inlet covers 15 may be attached at predetermined intervals along the inner wall surface of the inclined surface of the hopper-shaped portion 4.

In addition, when implementing the inlet cover 15
4 to 4 as necessary depending on the size and shape of the silo.
By installing about eight gas outlets and providing the gas outlet 18 in stages from near the outlet 11 of the hopper-shaped part 4 to the top of the hopper-shaped part 4, the gas can be spread evenly throughout the silo. .

[Effect of idea]

As described above, according to the present invention, it is possible to prevent the occurrence of cross-linking of stored materials, to perform stable discharge, and to uniformly diffuse gas for gas fumigation into the silo.

[Brief explanation of the drawing]

Figure 1 shows a second embodiment of the silo of the present invention.
Figure 2 is a sectional view of the part shown in Figure 1. Figure 3 is a sectional view of the part shown in Figure 1.
The figures are a sectional view of the section shown in FIG. 1, FIG. 5 is a partially cutaway view of the section shown in FIG. 4, FIG. 6 is a sectional view of the section shown in FIG. FIG. 8 is a cross-sectional view of the section shown in FIG. 8, showing an embodiment, and FIG. 1... Silo body, 4... Hopper shaped part, 11
...Discharge port, 15...Inlet cover, 16...
...Lid, 17...Top, 18...Gas outlet, 1
9... Gas guide body, 21... Throttle part, 23... Gas supply pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] In a silo for storing powder and granular materials, which is provided with a hopper-shaped part having a discharge port at the lower end in the lower part of the silo main body, the hopper-shaped part has a rectangular cross section in the vertical direction of the inclined inner wall surface. A plurality of elongated inlet covers each having a triangular cross-section apex are attached to the base of the inlet cover, and a plurality of gas outlets are formed at intervals on both sides of the base of the inlet cover. 1. A silo for storing powder and granular material, characterized in that a gas guide member having a constriction portion facing upward is provided inside the inlet cover, and a gas supply pipe is connected to the lower part of the inlet cover through an open connection.