JP3852836B2 - Grain drying equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a grain drying apparatus for drying a dried grain containing a large amount of moisture by germination or washing and having a grain surface in a softened state without damaging the grain surface. Is.
[0002]
[Prior art]
The so-called germinated brown rice, which germinates the germ of brown rice, contains a lot of moisture in the brown rice and is heated to a suitable temperature, so the germinated brown rice that has undergone germination contains a lot of water and the surface is softened. It is in a state. And the surface of the germinated brown rice has an uneven surface for germination. Moreover, even if it is what is called non-washed rice which does not require the water washing (rice tong) of rice at the time of rice cooking, and what wash | cleans and manufactures, the rice after water washing contains much moisture.
[0003]
[Problems to be solved by the invention]
In this way, germinated brown rice and non-washed rice that contain a lot of moisture need to be quickly dried to a predetermined moisture after the germination step or after the washing step in order to prevent deterioration and to preserve the shelf life. Germinated brown rice and wash-free rice are in a softened state due to moisture, so if you try to efficiently remove the moisture contained in a lot, you can ventilate while stirring the grains from the beginning of drying, The technical problem is that it is impossible to obtain high-quality dried germinated brown rice or wash-free rice due to damage such as loss or tearing of the grain surface.
[0004]
Therefore, the present invention provides a dried grain containing a large amount of moisture and having a grain surface in a softened state by germination treatment, washing treatment, etc. By using the properties of the grain layers that exhibit binding properties between each other, the grain is kept in a stationary state and ventilated at the initial stage of drying, so that the grain surface is not damaged and is not damaged by intergranular friction. Then, the grain surface is solidified by initial drying, and fluctuating air is blown through the grain layer in which the bonding property between the grains decreases as the water content decreases. Provided is a grain drying device that can be dried efficiently without damaging the surface of the grains by finish drying to dry up to moisture, and obtain high-quality dried germinated brown rice and wash-free rice. The it is an object of the present invention.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention proposes a grain drying apparatus according to claims 1 to 3 . In other words, grain drying equipment according to claim 1, high quality without containing a large amount of water due to germination and cleaning, and to be dried cereal grain surface is in the膨軟state, damaging the particle surface A drying apparatus for drying a grain, wherein the inside of a cylindrical drying cylinder is divided into upper and lower parts by a porous partition plate, and the upper part is a grain storage room whose entire upper surface is open , and the lower part is a blower room, the axial flow fan for blowing toward the swirling air draw in cool air upward, and the boundary of the blower vanes provided Oh Rutotomoni axial flow fan so as to face the lower surface of the porous partition barrier rib that space above The swirling air is configured to be blown substantially evenly over the entire lower surface of the porous partition plate as the air blowing space closed by the upper surface of the dried grain layer deposited in the grain storage chamber. so as to evenly distribute turning wind That has been made is characterized in.
[0006]
The grain drying apparatus according to claim 2 is the grain drying apparatus according to claim 1 , wherein the porous partition plate that partitions the inside of the drying drum up and down is deposited in the grain storage chamber such as the opening degree and the opening form of the porous portion. Further, the ventilation conditions for the dried grain layer can be changed.
[0007]
The grain drying apparatus according to claim 3 is the grain drying apparatus according to claim 1 or 2 , wherein another movable porous plate is brought into contact with the lower surface of the porous partition plate that partitions the inside of the drying drum up and down. In addition, the contact relationship of the movable porous plate with respect to the porous partition plate is changed, and the opening degree and the opening form of the porous portion of the porous partition plate can be changed.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the drawings, a grain drying apparatus according to the present invention is illustrated for drying germinated brown rice. 1 is a cross-sectional view of a drying apparatus for a grain drying apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a grain drying apparatus according to another embodiment of the present invention, and FIG. 3 is still another embodiment of the present invention. 4 is a cross-sectional view of the grain drying device according to the embodiment of the present invention, FIG. 4 is a plan view of the porous partition plate in the embodiment shown in FIG. 2 or FIG. FIG. 5 shows an embodiment in which the deviation angle of the hole of the movable porous plate is 5 degrees, and FIG. 5 shows an embodiment in which the deviation angle of the hole of the movable porous plate is 10 degrees with respect to the hole of the porous partition plate. . 6 and 7 are partial detailed sectional views corresponding to FIGS. 4 and 5, respectively.
[0009]
In FIG. 1, reference numeral 1 denotes a grain drying device. The grain drying device 1 has a cylindrical drying drum 2 partitioned vertically by a porous partition plate 3. The lower part is the blower chamber 5. The porous partition plate 3 is provided horizontally. The entire upper surface of the grain storage chamber 4 is open. An axial blower 6 is provided in the blower chamber 5. The axial blower 6 has a blower blade 7 facing the lower surface of the porous partition plate 3, and a space 9 closed by a partition wall 8 is located above the blower blade 7. A space 10 below the axial blower 6 communicates with the outside air through an outside air inlet 11. A dry grain outlet 12 is provided on the lower side of the grain storage chamber 4, and the outlet 12 can be opened and closed by a shutter 13. In the blower chamber 5, the space 9 closed by the partition wall 8 with the blower blade 7 as a boundary is formed so that the swirling air from the axial blower 6 is evenly blown to the entire lower surface of the porous partition plate 3. become.
[0010]
In order to dry the germinated brown rice that has been germinated by the grain drying apparatus 1 shown in FIG. 1, germinated brown rice to be dried, that is, the grain A to be dried, is put into the grain storage chamber 4 and layered on the porous partition plate 3. A uniform layer having a thickness of 100 mm is used. And the axial-flow fan 6 in the ventilation chamber 5 is started, a turning wind is ventilated toward the lower surface of the porous partition plate 3, and it enters into an initial drying process. The wind speed of the air blow by the axial blower 6 is 1 m (static pressure: 83 mmAq). In the blower chamber 5, the space 9 closed by the partition wall 8 with the blower blade 7 as a boundary is used as a swirling air to the lower surface of the porous partition plate 3. The layer of the dried grain A thus dried is uniformly swirled.
[0011]
Germinated brown rice that has undergone germination, that is, dried grain A, contains a large amount of moisture and has a loosened surface, thus exhibiting an inter-grain property. For this reason, even if the to-be-dried grain A deposited in the grain storage chamber 4 is swirled by the axial blower 6 from below the layer, the grains of the to-be-dried grain A are air-dried while maintaining a stationary state. The Therefore, in the initial drying step, the grain surface can be solidified without causing damage such as defects or lacerations on the grain surface even if the surface of the grain to be dried is in a softened state.
[0012]
When the moisture of the grain to be dried A becomes 30% or less due to the progress of the initial drying process, the grain surface of the grain to be dried solidifies to the extent that it is not damaged by intergranular friction, and fluidity occurs in the grains. The floating stirring state of the grains gradually increases due to the swirling air blown from the axial blower 6, and the to-be-dried grain A is efficiently and evenly dried to the finish moisture in the finish drying step in that state. The dried grain A that has been dried is taken out from the outlet 12 by opening the shutter 13.
[0013]
In the embodiment shown in FIG. 2, another movable porous plate 14 is in contact with the lower surface of the porous partition plate 3, and this movable porous plate 14 has a rotation angle with respect to the porous partition plate 3. The (shift angle) can be changed manually.
[0014]
In the embodiment shown in FIG. 3, another movable porous plate 14 is in contact with the lower surface of the porous partition plate 3 as in FIG. 2, and the movable porous plate 14 is electrically driven. The rotation angle is changed repeatedly with respect to the porous partition plate 3 by the rotation angle changing mechanism 15. Reference numeral 16 denotes a rotation angle changing drive motor, and 17 is a power supply device.
[0015]
As in the embodiment shown in FIG. 2 or FIG. 3, when the rotation angle of the movable porous plate 14 can be changed with respect to the porous partition plate 3, it is obvious as shown in FIGS. 4 to 7. Thus, the opening degree of the hole of the porous partition plate 3 and the opening state of each hole change in a complex manner depending on the degree of change of the rotation angle. For this reason, the swirling air blown upward from the axial blower 6 changes its direction when passing through the porous partition plate 3, and enhances the floating stirring action of the grain to be dried A in the finish drying step. The aspect also becomes various and the to-be-dried grain A can be dried evenly and efficiently.
[0016]
In particular, as shown in FIG. 3, by automatically and repeatedly changing the rotation angle of the movable porous plate 14, the opening degree of the holes of the porous partition plate 3 and the opening mode of each hole are repeatedly changed in various ways. Therefore, it is possible to enhance the floating stirring action of the grain to be dried A in the finish drying step, and to further improve the effect of drying the grain to be dried A uniformly and efficiently.
[0017]
In the grain drying apparatus 1 according to the present invention, the wind speed of the swirling wind by the axial blower 6 is kept constant as described above, and the wind speed, the amount of air, the direction of the swirling wind, the intermittent blow of air, In addition, if it is equipped with a function to control the air blowing conditions and control the air speed, air volume, wind direction, etc. in a complex manner, it is expected to have a better effect in drying the dried grain A evenly and efficiently. Can do. It is preferable to perform the control automatically.
[0018]
As an embodiment according to the present invention, the drying of germinated brown rice has been exemplified, but the grain drying method and apparatus according to the present invention are also used for grains containing a lot of water, such as unwashed rice subjected to water washing treatment, It can be dried with high quality.
[0019]
【The invention's effect】
According to the present invention, a dried grain containing a large amount of moisture by a germination treatment or a washing treatment and having a grain surface in a softened state, a grain having a high water content and a grain surface in a softened state. By using the properties of the grain layers that exhibit binding properties between each other, the grain is kept in a stationary state and ventilated at the initial stage of drying, so that the grain surface is not damaged and is not damaged by intergranular friction. Then, the grain surface is solidified by initial drying, and the grains are mixed with floating agitation by floating air through a grain layer in which the binding property between grains is lowered as the moisture is reduced. To provide a grain drying device that can be dried efficiently without damaging the surface of the grain by finishing drying to dry up to moisture, and obtaining high-quality dried germinated brown rice and wash-free rice. It can be.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a drying device of a grain drying device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a grain drying apparatus according to another embodiment of the present invention.
FIG. 3 is a cross-sectional view of a grain drying apparatus according to still another embodiment of the present invention.
FIG. 4 is a plan view of a porous partition plate and a partial detail view thereof in the embodiment shown in FIG. 2 or FIG. 3, and the displacement angle of the hole of the movable porous plate with respect to the hole of the porous partition plate is 5; The mode of the degree is shown.
FIG. 5 shows an embodiment in which the deviation angle of the hole of the movable porous plate is 10 degrees with respect to the hole of the porous partition plate.
6 is a partial detailed cross-sectional view corresponding to FIG. 4;
FIG. 7 is a partial detailed cross-sectional view corresponding to FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Grain drying apparatus 2 Drying drum 3 Porous partition plate 4 Grain storage chamber 5 Blower chamber 6 Axial flow fan 7 Blower blade 8 Partition 9 Closed space 10 Lower space 11 Outside air inlet 12 Dry grain outlet 13 Shutter 14 Movable porous Plate 15 Electric rotation angle change mechanism 16 Rotation angle change drive motor 17 Power supply device A Dry grain layer

Claims (3)

Contains a lot of moisture due to germination and cleaning, and to be dried cereal grain surface is in the膨軟state, a grain drying apparatus for drying a high quality without damaging the grain surface, a cylindrical The drying cylinder is divided into upper and lower parts by a porous partition plate, and the upper part is used as a grain storage room with the entire upper surface open , and the lower part is used as a blower room. the axial flow fan for blowing, the upper space as blowing a closed space by a partition wall in the boundary air blow wings porous partition plates provided to face the lower surface of the Ah Rutotomoni axial flow fan, the lower surface of the porous partition plate It is configured so that the swirling air is blown substantially uniformly with respect to the whole, and is configured so that the swirling air flows evenly from the lower surface to the upper surface of the dried grain layer deposited in the grain storage chamber. Grain drying equipment characterized by . The porous partition plate that partitions the inside of the drying drum up and down is characterized in that the ventilation conditions for the dried grain layer deposited in the grain storage chamber, such as the opening degree and the opening form of the porous part, can be changed. The grain drying apparatus according to claim 1 . The porous partition plate that divides the interior of the drying cylinder up and down is contacted with another movable porous plate on its lower surface, and the porous partition plate is changed by changing the contact relationship of the movable porous plate with respect to the porous partition plate. The grain drying apparatus according to claim 2 , wherein the opening degree and the opening form of the porous portion of the plate are changeable.

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