JP3200610B2 - Mainly grain drying equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cereal drying apparatus mainly used in a drying facility for collecting, drying and storing cereals such as rice and wheat.

[0002]

2. Description of the Related Art Conventionally, this type of drying apparatus is disclosed in
As disclosed in Japanese Patent Publication No. 122485, the system includes a number of storage bins for storing grains, a number of drying tanks for drying the grains, and a single replacement tank. After finishing the drying process, transfer the grains from one of the drying tanks to the replacement tank, transfer the grains from the other drying tanks sequentially to the empty drying tank, and finally replace the empty drying tank. The grain in the tank is transferred, and then dried again.Drying by such transfer is repeated several times.At the time of transfer, the moisture of the grain is detected by a moisture sensor. The time is calculated, the drying process is terminated after the elapse of the time, and the wind is supplied to the grain without excess or shortage to prevent overdrying and insufficient drying.

[0003]

However, in the above, a moisture sensor is used, the moisture sensor detects the moisture content of the grain for each drying tank, and the drying time is set according to the moisture content. Although the total air volume supplied to the grains can be adjusted, the grains initially brought into each drying tank are packed in a state where grains having various moisture contents are mixed in the first place. Even if the adjustment is not enough, there is a problem that the grain portion having a low moisture content tends to be over-dried and the grain portion having a high moisture content originally tends to be under-dried.

In the present invention, grains and the like to be initially carried in are weighed by a predetermined amount, and bins to be carried in are sorted according to their moisture values, and the amount of air supplied to the bins in accordance with the level of each of the sorted moisture sections. It is an object of the present invention to provide a grain drying apparatus capable of effectively preventing overdrying and insufficient drying of grains and the like in each storage bin by controlling the size of the grain.

[0005]

Therefore, in order to achieve the above object, there are provided a number of storage bins 10 connected to an air supply path 11, a carry-in machine 15 for carrying a material to be dried into these storage bins 10, and A carry-in measuring device 19 for measuring a predetermined amount of the material to be dried to be carried into the storage bin 10, a moisture detector 20 for detecting a moisture value of the material to be dried for each predetermined amount measured by the measuring device 19, The water detector 2 is controlled by controlling the
According to the moisture value detected at 0, the drying target for each predetermined amount is distributed to each of the storage bins 10 corresponding to different moisture classifications and delivered to the respective storage bins 10, and distributed by the distribution carrying means 45. An air flow control means 48 is provided which controls the amount of air supplied to the storage bin 10 according to the level of the moisture classification of the carried in dry matter.

[0006]

Since the objects to be dried in a predetermined amount are packed in the storage bins 10 in accordance with the moisture classification by the distribution carrying-in means 45, the parts to be dried which are packed in each storage bin 10 are dried. Uniform drying can be performed on the entire bottle without unevenness.

In addition, the air volume control means 48 controls the supply air volume to be higher for those having a high water classification and to reduce the supply air flow for those having a low water classification, so that a drying process can be performed in accordance with each water classification. It is also possible to prevent the occurrence of uneven drying between the storage bins 10 and to perform uniform drying between the storage bins 10.

[0008]

FIG. 1 shows a grain drying processing facility to which the drying apparatus of the present invention is applied. A grain receiving hopper 1, a grain lifting / lowering machine 2, and a re-threshing machine 3 are provided on the cargo receiving side. And a receiving / weighing device 5 for measuring the weight of the received grains by a predetermined weight (for example, 500 kg), and an adjusting tank 6, a rice huller 7, a rocking sorter 8, and a shipping tank 9 on the shipping side. Are provided. The NO. Connected to the air supply path 11 between the receiving side and the shipping side. 1 to NO. 10 storage bins 10 and loading elevator 1
2, a conveyor 15 having a movable top conveyor 14 having a position sensor 14a, and a loading machine 15 for loading grains into the storage bins 10, an electric shutter 16 for opening and closing the bottom side of each storage bin 10, and an outlet. Conveyor 17 which faces the lower receiving port 12a of the loading / unloading machine 12, and takes out the grain from the storage bin 10 and
And a carry-out machine 18 to be delivered to the side. In addition, a predetermined amount of grain to be carried into the storage bin 10 is provided between the upper discharge port 12b of the loading / lowering machine 12 and the relay conveyor 13;
A carry-in weigher 19 for measuring about 1/5 of 5 kg at a time and a moisture detector 20 for detecting a moisture value of the grain for each predetermined amount measured by the weigher 19 are provided.

Further, as shown in FIG. 2, each storage bin 10 is provided with an empty bin sensor 21 for detecting empty and a level sensor 22 for detecting fullness. The supply path 11 is supplied with room temperature dehumidified air generated by the air conditioner 23 and sent out by the fan 24. The supply path 11 and the inside of each storage bin 10 are connected via an electric damper 25 which can be freely opened and closed. Connected.

In FIG. 1, a three-way switching valve 26 is interposed at the outlet of the take-out conveyor 17, one of the switching ports is connected to the loading / lowering machine 12, and the other is connected to the shipping side. Discharge elevator 27 connected to adjustment tank 6
Connected to

FIG. 3 shows a control device 40 equipped with a microprocessor, which controls the carry-in machine 15 and outputs the next predetermined amount of cereals in accordance with the moisture value detected by the moisture detector 20. Distributing and loading means 4 for distributing and transporting to storage bin 10 corresponding to the three different moisture classifications shown in Table 1.
5 and an air flow control for controlling the opening degree of the electric damper 25 in accordance with the level of the moisture classification of the drying object distributed and carried in by the distribution carrying means 45, and controlling the amount of air supplied to the storage bin 10 to a large or small amount. When the means 48 and the drying process of one stroke are completed, the unloader 18 and the importer 15 are controlled to transfer the grain from the storage bin (departure bin) into which the grain is loaded to an empty storage bin (arrival bin). Rotation control means 44 to change
And

[0012]

[Table 1]

The input section 42 of the control device 40 includes:
The position sensor 14a, carry-in weigher 19, moisture detector 2
0, an empty bin sensor 21, a level sensor 22, and an input device 28 composed of a keyboard for designating a destination bin for rotation control and the like are connected. The output unit 43 includes the carry-in machine 15, the carry-out machine 18, a display 29 for simulating the carry-in state of each storage bin 10, the air conditioner 23, the fan 24, the electric dampers 25, and the three-way switching valve 26. Connected.

Next, a control procedure according to the above configuration will be described with reference to FIG. First, in step a, NO. 1 to NO.
In the storage bin 10 of FIG. 9, “0” is stored and initialized in the moisture classification data Bn and the carry-in weight data Mn (n = 1 to 9). In addition, NO. In No. 10, since at least one machine must be empty when transferring grains, the first carry-in is not performed.

Then, at step b, 5 kg is weighed by the carry-in meter 19, and at step d, the moisture value is detected by the moisture detector 20, and at d-1 to d-3, the group identifier G is determined according to the classification in Table 1. "1" or "2" or "3"
Is assigned. Now, if the moisture value is 22% or more, G = 1. Subsequently, "1" is stored in the bin number index n in step e, and NO. 1 is "0", that is, NO. If No. 1 is still empty and the incoming grain is the first one, NO. Step 1 after loading the grain into
The group identifier G = 1 is stored in B1 at step i. "1" is added to the carry-in weight data M1 corresponding to 1, and the bin number index n is cleared to "0" in step j, the process returns from step k to step b, and the next measurement is performed.

If the next weighed grain also has the same moisture classification, G = 1
In step f, since B1 = 1 and not 0, the process proceeds to step o, where G = B1 = 1, that is, NO.
1 is determined to be a grain belonging to the same moisture classification as the grain already carried in, and in step p, NO. 1 is level sensor 2
No. 2 unless it is determined to be full by the detection of NO. Then, the grain is added to 1 and loaded, and the process returns to step b again.

The moisture value of the next weighed grain is, for example, 20%.
In this case, G = 2, which contradicts B1 = 1, so a negative determination is made in step o, the process proceeds to step m, the bin number index n is updated by 1, and then the process returns to step f.
Since B2 = 0 here, NO in step g. After the cereal is carried in to step B, G = 2 is stored in B2 in step h, and NO. "1" is added to the carry-in weight data M2 of No. 2 and the process returns from step k to step b to perform the next weighing.

Further, if the moisture value of the next weighed grain is 18% or less, G = 3, and when the bin number index n is updated to 3 in step m, NO is obtained in step g for the first time. After the cereal is loaded into B3, G = 3 is stored in B3 in step h, and NO. "1" is added to the carry-in weight data M3 of No. 3 and the process returns from step k to step b to perform the next weighing.

Further, if the moisture value of the next cereal grain is 21%, G = 2, and if the bin number index n is updated to 2 in step m, NO in step g. After the grain is added to and transported to B2, G = 2 is stored again in B2 in step h, and NO. "1" is added to the carry-in weight data M2 of No. 2 and the process returns from step k to step b to perform the next weighing.

Then, the carry in of such a predetermined amount proceeds to some extent. If 1 is full, the process proceeds from step p to step m. When the bin number index n is updated to 4 in step m, the process proceeds from step f to step g, and in this step g, NO. Then, the cereal is loaded into B4, G = 1 is stored in B4 in Step h, and Step i is performed.
Then, "1" is added to M4, the process returns from step k to step b, and the next measurement is performed.

Even if the bin number index n is updated to n = 9 in step m, if a negative determination is made in step o or a positive determination is made in step p,
Since it is conceivable that there is an excessive amount of grains brought in due to a failure of the receiving and weighing device 5 or the like, the process proceeds from step q to step r, issues an alarm, and ends the process.

In this manner, the grains having various moisture values that are sequentially carried in at random are distributed to predetermined storage bins 10 according to the moisture values, for example, as shown in the figure. It is possible to uniformly dry the entire bottle of one storage bin without causing uneven drying in the portion of the grain packed per storage bin.

The received grain, for example, 500 kg
When all have been loaded, step c to step s
Then, the drying process under the next air volume control is executed. That is, in step s, the opening of the electric damper 25 in the wet group bins (NO. 1, 4, and 5 in the illustrated example) is increased, and in step t, the semi-dry group bins (NO.
Step u during the opening of the electric damper 25 in the steps 2 and 6).
And the opening of the electric damper 25 of the bins (NO. 3, 7) of the drying group is small, and the empty bins (NO. 8, 9, 1)
The electric damper 25 of (0) is controlled to be closed, and the air conditioner 23 and the fan 24 are driven in step w to blow air with dehumidified air. In this manner, the supply air volume is controlled to be large for grains having a high moisture classification, and the supply air flow is controlled to be small for grains having a low moisture classification. This can prevent uneven drying.

Next, when the drying process of one process is completed, the process proceeds from step x to step y, for example, the rotation control according to the destination bin shown in Table 2 is performed.
Each bin is in the state as shown in the figure by the rotation of one time. At this time, at the same time, the moisture classification data Bn
Is stored again on the receiving bin side, so that even at the time of the second drying process, the air volume can be controlled according to the moisture classification of each bin. In this example, the rotation is performed three times, and one rotation is completed by shifting the ranks from 1 to 7 each time.
Empty bottle NO. Is the number of the storage bin that becomes empty when the transfer of the rank 7 is completed in each rotation.

[0025]

[Table 2]

In the above embodiment, the supply air volume is controlled by adjusting the opening of the electric damper 25. In addition, only the opening and closing control is performed without adjusting the opening of the electric damper 25. The amount of air supplied to the bin may be controlled to be large or small by changing the blowing time by shortening the opening time for a long, low-water-content bin. Also, air may be blown individually and sequentially to the bins grouped for each different moisture section, and the rotation speed of the fan 24 may be controlled to be higher or lower according to the level of the water section of the group in which the air is to be blown. Good.

Further, in the above embodiment, the dehumidified air is supplied to the supply path 11 using the air conditioner 23, but the air may be used as it is without using the dehumidified air.

[0028]

As described above, according to the present invention, the objects to be dried of a predetermined amount are packed in the storage bins 10 by the distribution carrying means 45 in accordance with the moisture classification.
0 Drying can be performed uniformly in the entire bottle of one machine without causing drying unevenness in the portion of the material to be dried packed per machine. Since the supply air volume is controlled to be small for those having a low moisture classification, drying processing can be performed in accordance with each moisture classification, and uneven drying between the storage bins 10 can be prevented. And insufficient drying can be prevented, and good drying can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a drying apparatus according to the present invention.

FIG. 2 is a sectional view of a main part of the storage bin.

FIG. 3 is a block diagram of the control device.

FIG. 4 is a flowchart of the control device.

[Explanation of symbols]

10; storage bin, 11; supply path, 15; carry-in machine, 19;
Carry-in meter, 20; moisture detector, 45;
48; air volume control means

Claims (1)

(57) [Claims] 1. A plurality of storage bins (10) connected to an air supply path (11), a carry-in machine (15) for carrying dry matter into the storage bins (10), and the storage bins (10).
A carry-in meter (19) for measuring a predetermined amount of the material to be dried to be carried into the container, a moisture detector (20) for detecting a moisture value of the material to be dried for each predetermined amount measured by the meter (19), The carry-in machine (15) is controlled, and the objects to be dried for each predetermined amount are distributed to the respective storage bins (10) according to different moisture classifications according to the moisture value detected by the moisture detector (20). A distributing and carrying means (45) for carrying in,
Mainly comprising air volume control means (48) for controlling the volume of air to be supplied to the storage bin (10) according to the level of the water classification of the object to be dried which has been sorted and carried in 5). Grain drying equipment.