JP3284374B2 - Grain preparation facility - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain preparation facility such as a country elevator or a rice center for drying and storing grains such as rice or wheat.

[0002]

2. Description of the Related Art Conventionally, Japanese Utility Model No. 53-100453
, Or Japanese Utility Model Application Laid-Open No. 4-16541 or Japanese Utility Model
53-31840
Multi-stage cylindrical drying tanks for drying to moisture
The dehumidifying air at room temperature of the dehumidifying and blowing mechanism
Technology to supply the inside from the inverted conical ventilation surface at the bottom,
Technology to provide an outlet at approximately the center of the inverted conical ventilation surface of
Grains fall from the take-out port to the approximate center of the drying tank below.
There is technology to make it .

[0003]

SUMMARY OF THE INVENTION The above prior art is based on a drying technique.
The center of the upper surface of the grain layer inside the tank rises in a conical shape,
The layer thickness of the grain is remarkably different between the center and the outer periphery, resulting in uneven drying.
There is a problem of drying,
Normal temperature dehumidified air blown from the mouth is an inverted cone at the bottom of the grain tank
There is a problem of uneven supply to the ventilation surface .

[0004]

According to the present invention, cylindrical drying tanks for adding grains and drying to predetermined moisture are provided in multiple stages at the top and bottom, and the room temperature dehumidified air of the dehumidifying and blowing mechanism is supplied to the bottom of each tank . In addition to supplying the inside from the inverted conical ventilation surface, an outlet is provided substantially at the center of the inverted conical ventilation surface,
Drops from the outlet to the approximate center of the drying tank below
The grain layer inside the drying tank at the grain preparation facility
Disperse grains on the outer periphery so that the center of
And an equalizer for dropping the dehumidified air.
Normal temperature dehumidified air blown out from the blower of the mechanism becomes a spiral flow
The outlet is eccentric with respect to the outlet.
The center of the inside of the drying tank, which forms the bottom with a shaped ventilation surface
At the room temperature while reducing the difference in grain thickness between
By making the dehumidified air into a spiral flow, the inverted conical ventilation surface
Normal temperature dehumidified air can be sprayed uniformly over the entire area, inside the drying tank.
It is possible to easily reduce the drying unevenness of the grain and shorten the drying time .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a sectional front view of a drying tank, FIG. 2 is a plan view of a country elevator, and FIG. 3 is an explanatory view of a drying and storage unit. In FIG. 1, (1) indicates a receiving unit (2) and a shipping unit (3). , A drying unit for reducing the water content of the grains to a predetermined value or less, and (5) a storage unit for storing the grains. The receiving section (2) is provided with a receiving hopper (6) for inputting receiving grains, and the hopper (6) receives the hopper (6) via a receiving conveyor (7), a weighing machine (8), and a carrying-in conveyor (9). The grains are sent to the drying section (4), and the grains are dried to a predetermined moisture, and the grains in the drying section (4) are transferred through the carry-out conveyor (10), the communication conveyor (11), and the carry-in conveyor (12). It is sent to the silo (13) of the storage unit (5) to store the grains, and is an adjustment unit (16) including a huller (14) and a rice mill (15), and a product tank (17). Is installed in the shipping department (3), and the silo
The grain of 3) is taken out to the adjusting section (16) via the unloading conveyor (18), and the product grain from the adjusting section (16) is connected to the product tank (17) by the conveyor (11) and the weighing machine (1).
9) to carry out and ship.

Further, as shown in FIG. 4, a dehumidifier (20)
And a dehumidifying blower mechanism (22) provided with a blower (21), such as an evaporator (23) for cooling and dehumidifying, a condenser (24) for normal temperature restoration, and a scroll compressor (25) having a stepped output and adjustable output. Is provided in the dehumidifier (20), and the dehumidification control flaps (26) are provided.
And an air intake duct (27) for taking in the atmosphere (humid air) through the damper (28) (29) for constant humidity and the dehumidified air from the condenser (24) and the duct (2).
7) mixing with the atmosphere from to form room temperature dehumidified air;
The room temperature dehumidified air is supplied to the blower (21) by the suction duct (3).
0).

Further, as shown in FIGS. 1 and 5, cylindrical upper and lower drying tanks (31) and (32) are provided in multiple stages at the top and bottom.
With each tank (31) (32) as one set, eight sets of tanks (31)... (32) are installed in the drying section (4) in two rows, and the particles received from the receiving section (2) are separated from each other. Tank (31)
The lower drying tank (32) is placed on a base (33) on which a carry-out conveyor (10) is provided, and the upper drying tank is placed above the lower drying tank (32). (31) is placed, and a shed (40) having substantially the same structure as the silo (13) is placed on the uppermost portion, and a carry-in conveyor (9) is provided.

An outlet (42) having an outlet shutter (41) and an air outlet (44) having an air shutter (43) are connected to a bottom plate (45) of each tank (31) (31).
A mesh-shaped inverted conical ventilation surface (46) (46) provided at the part (45) and inclined at an angle of repose or more than the grain repose angle has a bottom plate (45) (45) upper surface at the lower part of each tank (31) (32). And the normal temperature dehumidified air supply unit of the same dehumidifying air blowing mechanism (22) is connected to the air vents (44) (44) of the upper and lower tanks (31) (32) by an air duct (47). The room temperature dehumidified air from the blowing mechanism (22) is supplied to each tank (31) (3) through the inverted conical ventilation surface (46).
2) It is supplied inside, and as shown in FIG.
5) The air outlet (44) is opened at an eccentric position with respect to the central outlet (42), and a vortex flow is formed by the normal temperature dehumidified air from the air outlet (44), and the entire ventilation surface (46) is formed. The air blowing pressure is configured to be substantially uniform.

Further, exhaust ports (48) and (48) are provided in the upper part of the lower drying tank (32) and the shed (40), and the exhaust ports (48) and (48) are connected to the wet dustproof chamber (49) of FIG. The tanks (3) are communicated with each other through the exhaust ducts (49) and (49).
1) (32) The exhaust from the upper part is discharged to the dustproof room (48) through the exhaust port (48) and the duct (49), and the upper cylinders (36) (3) of the tanks (31) and (32).
An equalizer (50) (50) is provided in 9), and the grains from the carry-in conveyor (9) and the outlet (42) are equalizer (50).
Disperse and drop by (50), each tank (3
1) When the grains are put to the level sensors (A) and (A) of (32), the center of the upper surface of the grain layer is depressed in an inverted conical shape, and the grains at the center and the outer periphery of the tanks (31) and (32). The grain layer thickness is made substantially equal, and each tank (31) (3
2) and the dehumidifying and blowing mechanism (22) for supplying room temperature dehumidified air to each of the tanks (31) and (32) is configured as a unit so as to be able to be added as a set, while the grains put into the upper tank (31) from above are arranged. The granules are configured to be discharged from the lower side of the lower tank (32) into the storage silo (13).

[0010] In addition, 50 tons of paddy are stored in each tank (31).
(32), put into two equal parts, make the accumulation height of the paddy about 2 meters, and when the drying loss rate is 0.2% per hour, the air resistance of the paddy becomes 320 mA, and the air volume The ratio is 0.02 cubic meters per 100 kilogram seconds, and 125 tons of grain can be received in eight sets of upper and lower drying tanks (31) and (32) per day.
00 tons of dried grains can be stored in eight silos (13) ... which makes it easier to handle and weigh grains than conventional drying bottles of almost the same capacity, and also dehumidifies. The power (236 kW) of the blowing mechanism (22) may be smaller than that of the conventional (280 kW), and the occupied area of the tanks (31) and (32) may be smaller than the occupied area (612 square meters) of the conventional drying bottle. 588 square meters), which makes it easier to reduce equipment costs and grain drying costs compared to conventional drying bottles.

As is clear from the above, the place where the grain is put
Cylindrical drying tank (31) (3) for drying to constant moisture
2) is provided in multiple stages at the top and bottom, and the room temperature of the dehumidifying and blowing mechanism (22)
Dehumidified air is inverted cone at the bottom of each tank (31) (32)
The air is supplied to the inside from the ventilation surface (46) and
An outlet (42) is installed at the approximate center of the inverted conical ventilation surface (46).
From the upper outlet (42) to the lower drying tank (3).
2) In a grain preparation facility where grains fall to the approximate center
The center of the upper surface of the grain layer inside the drying tank (32) is an inverted circle.
Disperse the grains to the outer side so that they fall into a cone shape and drop them
An equalizer (50) is provided, and the dehumidifying and blowing mechanism (2) is provided.
The room temperature dehumidified air blown out from the air outlet (44) of 2) is a spiral flow
And take out the air outlet (44) to the outlet (42)
Eccentric. And by the inverted conical ventilation surface (46)
The center and outer periphery of the inside of the drying tank (32) forming the bottom
At room temperature and dehumidified air
Of the inverted conical ventilation surface (46)
Normal temperature dehumidified air is blown uniformly over the entire area, and the drying tank (3
2) Reduce the drying unevenness of the internal grains and shorten the drying time.
What to do.

FIG. 6 shows a modified example, in which cylindrical upper and lower drying tanks (31) and (32) are provided in multiple stages at the top and bottom, and each tank (31) and (32) is used as one set.
1)... (32) are installed in the drying section (4) in two rows, and the received grains from the receiving section (2) are stored in each tank (31).
(32), and is dried to a predetermined water content or less. The lower cylindrical body (34) of the lower drying tank (32) is placed on a base (33) on which the carry-out conveyor (10) is provided. 3
4) The tank (32) is formed by placing the middle cylinder (35) and the upper cylinder (36) on the lower drying tank (3).
2) Place the lower cylinder (37) on the upper drying tank (31) above the upper cylinder (36), and place the middle cylinder (3) on the lower cylinder (37).
8) and an upper drying tank (31) on which the upper cylinder (39) is placed.
And a shed (40) having a structure substantially identical to that of the silo (13).
Is placed on the top, and a carry-in conveyor (9) is provided.

An inverted conical bottom plate (45) having an outlet (42) having an outlet shutter (41) and an air outlet (44) having an air shutter (43) is connected to each lower cylinder (34) (37). ), And a mesh-shaped inverted conical ventilation surface (46) (46) inclined at an angle greater than the angle of repose of the kernel is formed on the bottom plate (45) (45) upper surface of the lower part of each tank (31) (32). At the same time, the same dehumidifying and blowing mechanism (22) is provided to the blowing ports (44) and (44) of the upper and lower tanks (31) and (32).
The normal temperature dehumidified air supply unit is connected by a ventilation duct (47), and the normal temperature dehumidified air from the dehumidification ventilation mechanism (22) is supplied to each tank (31) via the inverted conical ventilation surface (46).
(32) It is supplied to the inside, and as shown in FIG. 5, the air outlet (44) is connected to the outlet (42) at the center of the bottom plate (45).
Is opened at an eccentric position, and a vortex flow is formed by the normal-temperature dehumidified air from the air outlet (44), so that the air blowing pressure on the entire ventilation surface (46) is substantially uniform.

Further, the lower cylindrical body (3) of the upper drying tank (31)
7) and the shed (40) are provided with exhaust ports (48) and (48)
Each exhaust port (48) (48) is connected to the wet dustproof room (49) in FIG.
Through the exhaust ducts (49) and (49), and exhaust air from the upper portions of the tanks (31) and (32) to the exhaust port (48).
And the air is discharged to the dust-proof room (48) through the duct (49), and the upper cylindrical body (36) of each of the tanks (31) (32).
An equalizer (50) (50) is provided in (39), and the grains from the carry-in conveyor (9) and the outlet (42) are equalized by the equalizer (5).
0) (50) dispersed and dropped, and when the kernels are put into each of the tanks (31) and (32), the center of the upper surface of the kernel layer is depressed into an inverted conical shape, and the center of the tanks (31) and (32) And the thickness of the grain layer at the outer peripheral portion is made substantially equal, and the tanks (31) and (32) and the tanks (31) are vertically arranged in multiple stages.
The dehumidification blower mechanism (22) for supplying normal-temperature dehumidified air to (32) is configured as a unit so as to be able to be added as a set, while the grains put into the upper tank (31) from above are removed from the lower tank (32). The storage silo (13) is configured to be taken out from the lower side.

[0015]

As is apparent from the above embodiments, the present invention is characterized in that a plurality of cylindrical drying tanks (31) and (32) for adding grains and drying them to a predetermined moisture are provided in upper and lower stages, and a dehumidifying and blowing mechanism (22) is provided. ) Is supplied to each of the tanks (31) and (3).
2) The air is supplied from the inverted conical ventilation surface (46 ) at the bottom to the inside, and is installed at substantially the center of the inverted conical ventilation surface (46).
An outlet (42) is provided, and an outlet (42)
Grain-like dropping kernels to approximately the center of the drying tank (32)
In the production facility, above the grain layer inside the drying tank (32)
Disperse the grains to the outer periphery so that the center of the surface is concave in the shape of an inverted cone
And an equalizer (50) for dropping
Room temperature dehumidification blown out from the air outlet (44) of the air blowing mechanism (22)
The air outlet (44) is taken out of the outlet (4) so that the air is swirled.
It is eccentric to 2) and has an inverted conical ventilation surface (4
6) inside the drying tank (32) forming the bottom by
The difference between the layer thickness of the grain at the center and the outer periphery can be reduced
And at the same time, the dehumidified air at room temperature
Normal temperature dehumidified air is blown uniformly over the entire conical ventilation surface (46).
To dry the grain inside the drying tank (32)
The drying unevenness can be reduced and the drying time can be shortened easily.

[Brief description of the drawings]

FIG. 1 is a sectional front view of a drying tank unit.

FIG. 2 is a plan view of a country elevator.

FIG. 3 is an explanatory view of a drying and storage unit.

FIG. 4 is an explanatory diagram of a dehumidification blower mechanism.

FIG. 5 is a cross-sectional plan view of a drying tank unit.

FIG. 6 is an explanatory view showing a modification of FIG. 1;

[Explanation of symbols]

(13) Silo (22) Dehumidification ventilation mechanism (31) (32) Drying tank (42) Outlet (44) Vent (46) Reverse conical ventilation surface (47) Ventilation duct (50) Equalizer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01F 25/00

Claims (1)

(57) [Claims] 1. A plurality of cylindrical drying tanks (31) and (32) for putting grains and drying to predetermined moisture are provided in upper and lower stages.
The room-temperature dehumidified air of the dehumidification blower mechanism (22) is supplied from the inverted conical ventilation surface (46) at the bottom of each of the tanks (31) and (32) .
And the above-mentioned inverted conical ventilation surface (46)
An outlet (42) is provided substantially at the center of the upper outlet (4).
Grain is dropped from 2) to approximately the center of the drying tank (32) below.
In the grain preparation facility to be removed, in the drying tank (32)
Remove the kernels so that the center of the upper part of the grain layer is concave in the shape of an inverted cone.
If an equalizer (50) for dispersing and dropping on the peripheral side is provided,
Both are from the air outlet (44) of the dehumidification air blowing mechanism (22).
The air outlet (4
4) A grain preparation facility characterized in that the outlet is eccentric with respect to the outlet (42) .