JP2000287534A - Apparatus for drying and storing grain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for drying and storing grains capable of saving energy of drying before storage, realizing large energy saving, keeping the grains at a prescribed moisture content and storing the grains for a long period without deteriorating the quality. SOLUTION: This apparatus for drying and storing grains comprises a storage bin 1 partially or wholly having a hollow double wall structure in which the opposite interval between an inner wall 14 and an outer wall 15 thereof is a ventilating space 16 and further a suction exhauster 10 for sucking and ventilating the outside air through the ventilating space 16 in the interior of the storage bin 1. The outer wall 15 of the hollow double wall structure of the storage bin 1 is composed of a wall material having both properties of intercepting the outside air and air permeability for sucking in the outside air staying along the wall surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cereal dry storage device for keeping cereal at a predetermined moisture content and storing the cereal for a long period without losing quality.

[0002]

2. Description of the Related Art Conventionally, in the storage of paddy, the harvested and threshed paddy is dried to moisture that is hardly altered, and stored in country elevator silos or storage bins. In order to maintain the temperature, the grain temperature is set to 20 ° C. or less, and when there is a risk of dew condensation in a silo or a storage bin due to a decrease in the outside temperature, drying is performed by ventilation of outside air (Japanese Patent Laid-Open No. Hei 6-1994). 269687 or JP-A-6-281336).

[0003]

By the way, the use of solar heat has been promoted for the drying of cereals in order to prevent global warming, prevent environmental deterioration and save energy.
In the drying of cereals, the use of solar heat alone cannot be covered by the use of solar heat, and the use of solar heat is mainly used as an auxiliary means, mainly using heating means by burning fossil fuels.

[0004] Therefore, the present invention considers the drying and storage of harvested cereals as consistent, and continues drying under heating by effective use of solar heat during storage for a long period of time, so that drying before storage is performed. It is an object of the present invention to provide a dry storage device for cereals that can save labor and realize significant energy saving, and can store cereals at a predetermined moisture and store the cereals for a long period of time without losing quality.

[0005]

According to a first aspect of the present invention, there is provided a dry storage device for cereal grains, wherein the harvested cereal is stored in a storage bin, and is stored while being dried by passing through outside air. The storage bin has a hollow double-walled structure in which a part or the entirety thereof has a hollow double-walled structure, and has a ventilation space between the inner wall and the outer wall of the storage bin, and has an intake function of sucking and ventilating outside air into the storage bin through the ventilation space. The outer wall of the hollow double-walled structure of the storage bottle is characterized by being formed of a wall material having both air-blocking properties and air-permeability for sucking the outside air staying along the wall surface by the suction function. It is assumed that.

According to a second aspect of the present invention, there is provided a dry storage device for cereal grain according to the first aspect, wherein the outer wall of the hollow double-walled structure of the storage bottle is configured to have a corrugated outer surface. It is a feature.

According to a third aspect of the present invention, there is provided a dry storage device for cereal grain, wherein the harvested cereal is stored in a storage bin and is stored while being dried while being ventilated with outside air.
The storage bin has a hollow double-walled structure in which a part or the whole thereof has a hollow space, and a facing space between an inner wall and an outer wall thereof is a ventilation space, and has an air suction function of sucking and ventilating outside air into the storage bin through the ventilation space. The outer wall of the hollow double-walled structure of the storage bin is formed in a vertically wavy shape, and the concave portion on the outer surface forms a warm air retention space, and the upper surface of the warm air retention space is made air permeable. It is characterized by the following.

[0008]

FIG. 1 is a schematic longitudinal sectional view showing an embodiment of a grain dry storage device according to the present invention, and FIG.
3 is a schematic cross-sectional view of the grain dry storage device shown in FIG. 1, FIG. 3 is a schematic cross-sectional view of the grain dry storage device shown in FIG. 1, FIG. FIG. 6 is a cross-sectional view showing another embodiment of the grain dry storage device, FIG. 6 is a partially detailed vertical sectional view showing still another embodiment of the grain dry storage device according to the present invention, and FIG. FIG. 6 is a partially detailed longitudinal sectional view showing another example of the sixth embodiment.

1 to 4, reference numeral 1 denotes a storage bin. This storage bottle 1 is a closed one, and its bottom wall 2 is made of a perforated plate and forms a lower ventilation surface, and is inclined so as to be concentrated at the center, and the inclined lower end at the center is a grain. Outlet 3 is provided. A grain discharge conveyor 4 is connected to the grain distribution outlet 3. The storage bin 1 has a bottom wall 2
Above is a grain storage room 5, and below the bottom wall 2 is an intake room 6. Reference numeral 7 denotes a plurality of legs. The top of the storage bin 1 is formed as a grain entrance 8, and a grain entrance gutter 9 is connected to the grain entrance 8. A suction exhaust fan 10 is connected to the intake chamber 6.

At the top of the storage bin 1 is the above-described grain entrance 8
A grain equalizing device 11 is provided corresponding to. The grain equalizing apparatus 11 includes a rotary release plate 12, and 13 is a drive motor thereof.

The storage bottle 1 has a hollow double-walled structure on the entire peripheral surface and the upper surface, and a gap between the inner wall 14 and the outer wall 15 is a ventilation space 16. This ventilation space 16 is open at the lower end of the peripheral surface and communicates with the outside air.
It communicates with the grain storage room 5 at the top inside. The outer wall 15 of the hollow double-walled structure of the storage bin 1 is made of a wall material that has both a blocking property of outside air and a breathability of sucking outside air staying along the wall surface by the suction function. In the form (1), a large number of the fine holes 17 are formed in an area ratio over the entire surface in a uniform or fixed group. The outer wall 15 is not necessarily required to have heat insulation, but preferably has excellent heat insulation and heat storage properties.

Outer wall 15 of hollow double-walled structure of storage bin 1
As shown in FIG. 3 and FIG. 4, the configuration is such that the surface area is increased by forming a wave shape in the horizontal direction. The inner wall 14 has a cylindrical shape, but has a gentle wave shape in the vertical direction to increase the strength.

[0013] As shown in FIG.
The outer periphery may be surrounded by a plurality of arc-shaped coverings 18. These arc-shaped coverings 18 can be rotated in the circumferential direction with respect to the axis of the storage bin 1, and as shown in FIG. The solar heat taken into the storage bin 1 can be controlled accordingly.

FIG. 6 or FIG. 7 shows another embodiment of the present invention. In the structure of FIG. 6, the outer wall 15 of the hollow double-walled structure of the storage bin 1 is formed in a vertically corrugated shape. The concave portion on the outer surface side forms a stay space 19 for warm air heated by solar heat. A fine hole 17 is formed in the upper surface of the warm air retention space 19. In addition,
Other configurations are the same as those shown in FIGS.

FIG. 7 is substantially the same as that of FIG. 6, except that the upper surface of a warm air holding space 19 formed by a concave portion on the outer surface is substantially horizontal, and the warm air holding space 19 Stagnation, and the accumulated warm air is prevented from escaping. The other configuration is the same as that shown in FIGS.

In storing the grain, the pre-dried grain is carried into the storage bin 1 from the grain carry-in port 8 by the grain carry-in gutter 9 and is stored in a predetermined amount in the grain storage room 5 (see FIG. 1). Then, during storage, the suction / exhaust air blower 10 is operated according to predetermined conditions to suck the outside air through the ventilation space 16 and distribute the air to the grain layer being stored. The grains during storage may be appropriately circulated as needed.

When the storage bin 1 having the hollow double-wall structure is irradiated with sunlight, the outside air along the outer surface of the outer wall 15 is heated by solar heat, and the warm air flows along the outer surface of the outer wall 15. Stay. The staying warm air is suctioned by the suction and exhaust fan 10 to form a large number of fine holes 1.
7 is introduced into the ventilation space 16 from the surface having the
The air is mixed with the outside air sucked into 6 and becomes heated air. The heated air flows through the grain layer being stored, and is dried by ventilation using heated air by utilizing solar heat.

FIG. 6 or FIG.
The outer wall 15 of the hollow double-walled structure is vertically formed in a wavy shape, and a concave portion on the outer surface thereof forms a stagnation space 19 for warm air heated by solar heat. Since the fine holes 17 are formed in the upper surface of the stay space 19, the warm air heated by the solar heat stays in the warm air stay space 19 and is difficult to escape, and the staying warm air rises and the warm air stay space 19 increases. Is efficiently taken into the ventilation space 16 from the upper surface through a large number of fine holes 17. Therefore, according to these embodiments, the efficiency of using solar heat is greatly improved.

As described above, according to the embodiment of the present invention, ventilation drying can be performed by effectively utilizing solar heat even during storage of cereals. Pre-drying can be simplified, and energy can be saved in drying and storing the grain.

[0020]

According to the present invention, drying and storage of harvested cereals are regarded as consistent, and heating and drying by effective use of solar heat are continued during storage for a long period of time, so that pre-storage can be achieved. It is possible to obtain a dry storage device for cereals that can save drying energy and realize large energy savings, can maintain cereals at a predetermined moisture content, and can store the cereals for a long period of time without losing quality.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional view showing one embodiment of a grain dry storage device according to the present invention.

FIG. 2 is a partially detailed sectional view of the grain dry storage device shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of the grain dry storage device shown in FIG.

FIG. 4 is a partially detailed sectional view of FIG. 3;

FIG. 5 is a cross-sectional view showing another embodiment of the grain dry storage device according to the present invention.

FIG. 6 is a partially detailed vertical sectional view showing still another embodiment of the grain dry storage device according to the present invention.

FIG. 7 is a partially detailed longitudinal sectional view showing another example of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage bin 2 Bottom wall 3 Grain logistics outlet 4 Grain discharge conveyor 5 Grain storage room 6 Intake room 7 Support 8 Grain carry-in 9 Grain carry-in gutter 10 Suction exhaust fan 11 Grain equalizing device 12 Rotary release plate 13 Drive motor 14 Inner wall 15 Outer wall 16 Ventilation space 17 Micro hole 18 Arc-shaped cover 19 Warm air retention space

Claims (3)

[Claims] 1. A grain drying and storage apparatus for storing harvested grain in a storage bin and storing the harvested grain while drying it by ventilating outside air, wherein the storage bin has a hollow double-walled structure in part or whole. The facing space between the inner wall and the outer wall is a ventilation space,
In addition, the storage bin has an intake function of sucking and ventilating outside air into the storage bin through the ventilation space, and the outer wall of the hollow double-walled structure of the storage bin has an air blocking function and the outside air that stays along the wall surface. A dry storage device for cereals, comprising a wall material having both air permeability for inhaling by the method. 2. The grain dry storage device according to claim 1, wherein the outer wall of the hollow double-walled structure of the storage bottle is configured to have a corrugated shape to increase the surface area. 3. A dry storage device for cereals in which harvested cereals are stored in storage bins and stored while being dried by ventilating outside air, wherein the storage bins are partially or entirely hollow double-walled structure. The facing space between the inner wall and the outer wall is a ventilation space,
In addition, the storage bin has a suction function of suctioning and ventilating outside air into the storage bin through the ventilation space, and the outer wall of the hollow double-walled structure of the storage bin is formed in a wavy shape in a vertical direction, so that the concave portion on the outer surface side has a warm air. A dry storage device for cereals, characterized in that a stagnant space is formed and an upper surface of the warm air stagnant space is made air permeable.