JPH0789024B2 - Grain drying equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a grain drying apparatus in which a circulating grain dryer and a cooling tank are arranged in parallel.

[Problems to be Solved by Prior Art and Invention]

In the grain drying device of the type in which the circulation type grain drier and the cooling tank are arranged in parallel as described above, if the air exhaust duct on the grain drier side is provided in a straight line, it is less likely to be affected by wind power reduction. Therefore, conventionally, a structure in which a tunnel-shaped frame for passing an exhaust duct is formed in an intermediate portion of a cooling tank installed on the back side thereof (Japanese Patent Laid-Open No. 58-145875). However,
The pressure of the grain flowing down from the cooling tank portion is concentrated on the frame portion as it is, and it is easily damaged and requires a special reinforcing structure.

[Means for Solving the Problems]

The present invention is a grain drying apparatus in which a cooling tank 2 is provided in parallel on the rear side of a circulation type grain drying apparatus 1 in an attempt to adapt the above-described reinforcing configuration with a simple configuration.
A frame 24 for forming a tunnel-shaped space 23 for penetrating the exhaust air duct 22 for guiding the suction and exhaust air of the circulation type grain dryer 1 is provided in the middle part, and the exhaust air below the cooling tank 2 is provided. Inclined guide plate that guides the grain down to the transfer gutter 29
25 and 25 are formed integrally with the frame 24 by intersecting them, and a transfer gutter 29 having a transfer spiral 31 therein is seen in the lower left and right directions of these inclined guide plates 25, 25, and in the left and right directions. A grain dryer is provided with a belt conveyor (34) for collecting, discharging and transporting the grains from the transfer gutter (29).

[Operation and effect of the invention]

The grain stuck in the grain dryer is subjected to a predetermined circulating drying action and transferred to the cooling tank 2 side. Grains in the cooling tank 2 are discharged to the outside of the machine while flowing down along the inclined guide plates 25, 25 according to the driving of the discharge transfer trough 29 below as necessary. Grains that have flowed down the inclined guide plates 25, 25 are received by a lower transfer gutter 29 and transferred in one of the left and right directions by a transfer spiral 31, and further from the transfer end side by a belt conveyor.
It is moved to 34 and transported to an appropriate position.

By the way, since the frame 24 for forming the tunnel-shaped space 23 for penetrating the exhaust duct 22 on the dryer 1 side is provided in the cooling tank 2, the pressure of the grain concentrates on the upper surface thereof. Since the guide plates 25, 25 provided in an inclined shape are integrally connected in an intersecting state, the frame
24 is reinforced and has a simple structure, but does not cause deformation or damage.

Of course, the transfer gutter 29 can be configured in the left-right direction, and the transfer gutter 29 is provided immediately below and to the left and right of the cooling tank 2, and the belt conveyor 34 extending in the same direction is configured within the lower range of the cooling tank 2. Therefore, the installation area of the device can be reduced. If the transfer gutter 29 runs along the front-rear direction, the belt conveyor 34 must be arranged at the transfer end, and of course, it must be constructed outside the lower area of the cooling tank 2, especially on the rear side. However, in the configuration of the present invention, since this space can be configured as the lower space of the cooling tank 2, the effect of avoiding the expansion of the installation area as described above is obtained. is there.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 is a circulation type grain dryer, 2 is a cooling tank, and the cooling tanks 2 are arranged side by side on the rear side of the circulation type grain drying machine 1 to form a pair, and a plurality of sets are arranged side by side to form a large quantity. It constitutes a drying facility capable of drying grains.

The circulation type grain dryer 1 has a known configuration in which an upper storage tank 3, a drying unit 4 and a grain collecting unit 5 are stacked in this order, and the drying unit 4 has left and right grain flow-down passages 6 and 6 as mesh plates. A hot air chamber 7 ′ communicating with the burner 7 cylinder provided on the front side between the two passages 6,6, and an exhaust air chamber 9,9 communicating with the suction fan 8 cylinder on the corner outside of these passages 6,6. Is formed.

A transfer spiral 10 is provided at the lower part of the grain collecting section 5 and a feeding valve is provided.
The dry grain fed out by the rotation of 11 and 11 is guided downward and can be horizontally transferred to the lower receiving part of the elevator 12 standing upright on the back side of the dryer 1 body.

A belt with a bucket is provided in the elevator 12, and the grain scooped in the bucket is lifted up and thrown through the throwing port 13 toward the guide tube 14 which is branched in a bifurcated shape on the lower side.

A transfer gutter 15 looking into one of the guide tubes 14 has a transfer spiral inside thereof.
It is equipped with 16 and is installed horizontally on the upper part of the dryer 1, and is configured to horizontally transfer and supply grains to the surface of the rotary diffusion plate 17 located in the upper center of the storage tank 3. The other transfer gutter 18 is also provided with a transfer spiral 19 and is horizontally provided above the cooling tank 2. The transfer gutter 18 on the side of the cooling tank 2 does not have a diffusing device such as the rotary diffusing plate 17, and the lower part of the transfer spiral 19 is opened to sequentially deposit in the tank part 20.
A diffusing blade 20 is provided at the terminal end of the 19-axis to provide a function of leveling the accumulated grain by scattering the grain in a direction different from the transfer direction when approaching the full state.

The cooling tank 2 has a tunnel-like space 23 in the center of the left and right below the large-capacity tank section 19 for allowing an exhaust duct 22 connected to the suction fan 8 of the dryer 1 to penetrate therethrough in the front-rear direction. Therefore, a frame 24 having a pentagonal cross section (the lower side is open) is provided, and a pair of inclined guide plates 25, 25 are provided from the front and rear sides so as to intersect with the frame 24 portion so that the front-rear space is downward. In this case, the frame 24 and the inclined guide plates 25, 25 are rigidly integrated by fastening means such as bolts 26, 26 .. In addition, the upper edges of the inclined guide plates 25, 25 are formed to be bent outward so that they can be fixed by being sandwiched between machine walls divided to form the cooling tank 2.
Flange portions are formed on both end surface portions of the frame 24 and are fixed to the machine wall by fastening means such as bolts 27, 27 ...

The exhaust duct 22 on the dryer 1 side is configured to be supported and fixed by reinforcing ring bodies 28, 28 respectively provided at the entrance side and the exit side of the tunnel-shaped space 23.

On the lower side of the cooling tank 2, a discharge transfer gutter 29 is provided so as to be vertically attachable and detachable by bolts 30, 30 ... And so on substantially along the lower surface of the inclined guide plates 25, 25. Inside the transfer gutter 29, a transfer spiral 31 is hung, and a conveyor belt conveyor 34 surface is peeked downward by the scattering action of the scattering blade body 33 on the end side of the transfer spiral 31 from a discharge tube 32 connected to one side. It is designed to be discharged to.

The transmission structure of each rotating portion of the dryer 1 and the cooling tank 2 is generally as follows. The output shaft pulley 36 of the drive motor 35 fixed to the upper side of the elevator 12 is transmitted by the belt 38 to the large diameter pulley 37 of the transfer spiral 16 axis, and further, the small diameter pulley 39 of the spiral 16 axis and the upper safe of the elevator 12. A belt 41 is laid between the shaft pulley 40 and the shaft pulley 40 to drive the elevator 12. or,
Lower safe shaft pulley (not shown) and elevator 5 of the elevator 12
A transfer belt is provided between the transfer spiral 10 and a pulley (not shown) on the shaft side so that both can be transmitted. The delivery valves 11, 11 and the suction fan 8 are rotationally interlocked by independent valve motors or fan motors, not shown.

On the cooling tank 2 side, the transfer spiral 19 axis of the transfer trough 18 is configured to be interlocked by the drive motor 42 via the chain, and the transfer spiral 31 axis of the lower transfer trough 29 is rotationally interlocked by the drive motor 43. .

FIG. 9 shows a part of the guide cylinder 14 in detail, in which shutters 44, 45 are provided rotatably around support shafts 46, 47 respectively in the bifurcating flow passages. The interlocking members 48 and 49 provided at the ends are connected by a rod 50, and one interlocking member 48 is connected to one end of a rod 52 that converts the rotation of the opening / closing motor 51 into reciprocating motion and transmits the reciprocating motion. As a result, the shutters 44 and 45 move from the state of supply guide to the dryer 1 side transfer gutter 15 in the figure a (dotted line) to the cooling tank 2 side transfer gutter 18 in the figure b (phantom line). It is a configuration that switches to the supply guide state. Incidentally, the returning operation to (i) is configured by rotating the opening / closing motor 51 in the same direction.
Incidentally, in the supply guide state shown in (a), there is a communication part (c) between the lower edge of the shutter (44) and the machine frame, which causes clogging on the transfer gutter 18 side, but excess grain overflows from this communication part (c). The dryer 1 side circulates and flows, and a failure can be prevented.

Incidentally, 54 is a grain conveyor flow conveyor extending between the dryer 1 and the cooling tank 2 in a direction orthogonal to the direction in which the dryer 1 and the cooling tank 2 are juxtaposed. It is connected via a guide chute 56 to a tension hopper 55 provided at the lower part of the. A plurality of sets of dryers / cooling tanks are installed along the longitudinal direction of the flow conveyor 54 so that grain can be loaded into each dryer.

Reference numeral 57 is a control box provided on the front side of the dryer 1, which has a group of operation switches and has a built-in microcomputer for storing control programs and various data necessary for drying control. In addition to outputting a drive stop signal to the drive motor group or the burner, the drying control is performed while inputting the data of the moisture meter 58 and various sensors.

The operation of the above example will be described.

When the flow conveyor 54 is activated, the stake-in hopper 55 and elevator
Pour the required amount of grain through 12. Next, when the drying switch is operated, the respective parts of the dryer 1 are started to operate, and the grains in the storage tank 3 are gradually flowed down the downflow passages 6 and 6 by the rotation of the feeding valves 11 and 11 while being exposed to the hot air from the burner 7. To be dried. In advance, the shutters 44 and 45 in the guide plate 14 are at the position a, and the grain exposed to the hot air in the downflow passages 6 and 6 is transferred from the grain collecting section 5 to the transfer spiral 10, the elevator 12, the guide tube 14, and the transfer trough 15.
After that, it is returned to the storage tank 3 again to be conditioned.
At this time, the exhaust air that escapes from the hot air chamber 7'to the exhaust chambers 9 and 9 is released to the outside of the machine through the exhaust duct 22. Although such a dry tempering operation is repeated to achieve a specified moisture value, the discharge switch turns ON when the specified moisture value is reached.
Then, first, the shutters 44 and 45 are switched to the B position, and the drive motor 42 for the transfer spiral 19 of the transfer gutter 18 on the cooling tank 2 side starts to rotate, and after a short delay, the grain circulation system on the dryer 1 side. The drive motor 35 etc. starts. The dry grains in the storage tank 3 are transferred into the cooling tank 2 via the grain collecting section 5, the elevator 12, the guide tube 14, and the transfer gutter 18.

The grains stored in the cooling tank 2 for a predetermined period of time have another discharge switch operation (for example, the drying which controls the operation of the belt conveyor 34 and other common parts) when the time required for the subsequent preparation work is reached. It is provided on the control box for controlling the entire facility)
Is discharged to. That is, by operating the switch, the transfer gutter
The transfer spiral 31 of 29 rotates to discharge the stored grains in the cooling tank 2, and the grains are divided into left and right by a frame 24 part which is provided in the lower part of the cooling tank 2 in a front and rear penetrating manner, and the inclined guide plate 25, It flows down along 25 and continuously flows down into the transfer trough 29 from the upper and left sides of the transfer spiral 31.

As described above, when the grains flow down from the inclined guide plates 25, 25 through the frame 24, excessive grain pressure is applied to them, but these inclined guide plates 25, 2 intersecting the frame 24 are formed.
Since 5 is reinforced, the risk of deformation and damage is reduced, and the number of other reinforcing frames 59, 59 ... Installed can be reduced as much as possible.

[Brief description of drawings]

1 shows an embodiment of the present invention. FIG. 1 is an overall side view, FIG. 2 is its plan view, FIG. 3 is its rear view, and FIG.
1 is a sectional view taken along the line AA in FIG. 1, FIG. 5 is a perspective view of an essential part, FIG. 6 is a side view in which a part thereof is sectioned, FIG. 7 is a side view of a discharge transfer gutter, and FIG. Is a front view thereof, and FIG. 9 is an enlarged sectional view of a guide cylinder. In the figure, 1 is a grain dryer, 2 is a cooling tank, 6 and 6 are grain flow passages, 7 is a burner, 7'is a hot air chamber, 8 is a suction fan,
9, 9 is an air exhaust chamber 9, 9, 12 is an elevator 12, 14 is a guide tube, 15 is a transfer gutter, 18 is a transfer gutter 18, 19 is a transfer spiral, 20 is a tank part, 22 is an exhaust duct, and 23 is Tunnel-like space, 24 is frame 24, 2
5, 25 is an inclined guide plate, 29 is a transfer gutter 29 for discharge, 31 is a transfer spiral, 32 is a discharge cylinder, 34 is a discharge belt conveyor, 44 and 45 are shutters, 54 is a flow conveyor, 55 is a stake hopper, 57 Indicates a control box.

Claims (1)

[Claims] 1. A grain drying apparatus in which a cooling tank 2 is arranged in parallel on the rear side of a circulation type grain drying apparatus 1, wherein the cooling tank 2 is used.
A frame 24 for forming a tunnel-shaped space 23 for penetrating the exhaust air duct 22 for guiding the suction and exhaust air of the circulation type grain dryer 1 is provided in the middle part, and the exhaust air below the cooling tank 2 is provided. Inclined guide plate that guides the grain down to the transfer gutter 29
25 and 25 are formed integrally with the frame 24 by intersecting them, and a transfer gutter 29 having a transfer spiral 31 therein is seen in the lower left and right directions of these inclined guide plates 25, 25, and in the left and right directions. A grain drying device provided with a belt conveyor 34 for collecting, discharging, and transporting the grains from the transfer gutter 29 along.