JPH06221761A - Grain drying and storing method - Google Patents

Abstract

PURPOSE:To execute a long interval storage of grain with a good taste and with a simplification of a storage operation and a set area decrease by executing a storage in a dryer as they are after grain are dried and, by cooling the stored grain so as to have a lower difference between a grain temperature and an outside atmosphere one than an allowable value. CONSTITUTION:When a dryer is started after a predetermined quantity of grain are loaded in the dryer, the grain are made to execute an automatic circulation flow in the dryer by driving of a grain circulating motor 4 and, at the same time, are dried by a dried air generated at and sent from a heating device 5 which is blown to the circulating grain. And, when a finish water content is detected by a water content sensor 1, a drying operation is made to become an end. The grain are not exhausted from the dryer, and are accommodated in the dryer as they are and are stored. During an interval of the storage, when an difference in temperature between a grain temperature and an outside atmosphere temperature is larger than an allowable value, a storage controlling circuit 9 drives the grain circulating motor 4 and an outside air suction blower 11 and makes the grain under storage circulate and cools them by pouring a low temperature outside air.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention allows the dryer itself capable of finishing and drying grains to be used as a storage container for rice and rice, or it can be stored as grains having a better taste for a long period of time. The present invention relates to a dry storage method for grains.

[0002]

2. Description of the Related Art Conventionally, many ordinary farmers use a dryer to carry out harvesting work at their own convenience at a free time, for example, on holidays such as Saturday and Sunday, and drying work on other days. Have However, according to the conventional agricultural work mode, since the dryer is not used at all after the drying work is completed, the dryer may become a useless long product simply by taking a place. Not only that, in order to keep rice and rice for home-grown rice, farmers need a storage container and its installation place separate from the dryer.
Perhaps it's very difficult for farmers with small work spaces,
For example, when left at a high grain temperature of 20 ° C or higher for more than 1 month, rice quality will deteriorate (increased fatty acids) and the taste will be deteriorated. It is desirable to lower the temperature so that

[0003]

However, according to the conventional dry storage technique of this kind, the harvested grain is dried to a predetermined water content by a dryer, and then the dried grain after the completion of drying is dried by the dryer. It was taken out and processed, and the paddy and rice for home-cooked rice were stored in a storage container prepared separately from the dryer, so it may not be possible to use the dryer at all, or an extra storage container must be prepared. was there. In addition, when storing grains, the temperature of the grains is a factor that affects the quality of the stored grains, and if the temperature is high, breathing work of the stored grains becomes active, and parasitic propagation of microorganisms, pests, etc. occurs. The storage temperature of the grain is at least 20 ° C because it promotes the decomposition of starch, protein, fat and other chemical substances that make up the grain, and at the same time reduces the vitality of the paddy and decreases the taste and other quality. The following is desirable, and it is said that about 10 ° C is desirable for storage for 10 months or more. This is because grain cannot be stored in good quality without special equipment for maintaining a low temperature state, so general farmers will not be able to store grain. It was left as it was in a high temperature state, resulting in a deterioration in taste. Also, when the grain is stored using a storage container, the outside air temperature decreases with respect to the grain temperature,
When a large temperature difference occurs between the wall temperature of the storage container and the grain temperature, there is a problem that a dew condensation phenomenon occurs in the storage container to wet the grain and further deteriorate the quality.

According to the present invention, the dryer itself for finishing and drying the circulating and flowing grain is effectively used as a storage container for home-cooked rice, and the temperature difference between the grain temperature and the outside air temperature is preset during the storage period. When the value exceeds the allowable value, the low temperature outside air is circulated while the grain is circulated to cool the stored grain so that the temperature difference becomes the allowable value or less, and at the same time, the occurrence of the dew condensation phenomenon is prevented in advance. It is an object of the present invention to obtain a dry storage method of grains that can be stored satisfactorily for a long period of time while maintaining the taste.

[0005]

In order to achieve the above object, in the dry storage method for grains according to the present invention, after the grains that circulate and flow in the dryer are exposed to dry air to finish drying, and after the drying is completed. The grains are stored in the dryer as they are without being discharged, and the grain temperature and the outside air temperature are detected over time during the storage of the grains, and the temperature difference between the grain temperature and the outside air temperature is a preset allowable value. When it is larger than that, the stored grain is circulated to expose the low temperature outside air to cool the stored grain so that the temperature difference becomes equal to or less than the allowable value.

[0006]

[Operation] Now, a method for dry-storing grains for home-cooked rice will be described. After putting a certain amount of rice grains in the dryer,
When the dryer is started, the grains are automatically circulated and flowed in the dryer by the drive of the grain circulation motor, and at the same time, the dry air blown by the heating device is poured onto the circulated grains to dry the grains. When the moisture sensor detects the finishing moisture (for example, 15 ° C.), the drying control circuit automatically stops the operation of the grain circulation motor and the heating device to end the drying.

As described above, when the grain is dried to the final moisture content, the grain itself is stored in the dryer as it is without being discharged because it is used as a storage container for rice and rice. To do. Then, during the storage period, the grain temperature sensor and the outside air temperature sensor detect the grain temperature and the outside air temperature with time, and the detection signals are sent to the temperature difference detection circuit for comparison, so that the grain temperature and the outside air temperature are compared. And the temperature difference between the temperature difference setting circuit and the storage control circuit is sent as a signal to the preset allowable value (for example, 4 ° C to 5 ° C).
℃), the storage control circuit drives the grain circulation motor and the outside air suction blower to circulate the grain being stored and cool it by exposing it to low temperature outside air.

Next, when the temperature difference falls below a preset allowable value due to the cooling action of the low temperature outside air, the storage control circuit automatically stops the operation of the grain circulation motor and the outside air suction blower. Therefore, it is permissible that the grains being stored are always kept at an appropriate temperature for storage, or the temperature difference can be made substantially constant, so that the grains are not deteriorated or the taste is maintained for a long time without causing dew condensation. It can be stored for a long time.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A block circuit for carrying out the method of dry storing grain according to the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a moisture sensor for detecting moisture of dried grains with time during a drying time and sending the detection signal to a drying control circuit 2, which is a moisture sensor 1 according to the present invention.
For example, the moisture of the grain to be dried is detected with time from the initial stage of drying to the end of drying every hour. Three
Is a finish moisture setting circuit, which sends a signal of a predetermined finish moisture (for example, 15%) to the drying control circuit 2 when the moisture of dried grains is detected with time,
During the drying operation, when the moisture sensor 1 detects the finished moisture (for example, 15%), the drying control circuit 2 stops the operation of the grain circulation motor 4 and the heating device 5 to end the drying. 6 is a grain temperature sensor for detecting the grain temperature of the stored grain during the storage period with time, for example, every 1 hour, and sending the detection signal to the temperature difference detection circuit 8, and 7 is for the storage period. An outside air temperature sensor for detecting the outside air temperature with time, for example, every hour, and sending the detection signal to the temperature difference detection circuit 8, wherein the grain temperature and the outside air temperature obtained by the temperature difference detection circuit 8 The temperature difference detection signal is sent to the storage control circuit 9, and the temperature difference is sent from the temperature difference setting circuit 10 to the storage control circuit 9 during the storage period. When the temperature is higher than the temperature (° C.), the storage control circuit 9 automatically drives the outside air suction blower 11 and the grain circulation motor 4 to circulate the grain being stored, and cools the low temperature suction outside air. When the temperature difference between the grain temperature and the ambient temperature becomes equal to or less than the preset allowable value due to the cooling action, the storage control circuit 9
Is configured to automatically stop the driving of the outside air suction blower 11 and the grain circulation motor 4.

[0010]

Since the present invention is constructed as described above, it has the following effects. Even with a single dryer, circulation drying work of grains and storage work of rice grains can be reliably performed, and effective use of the dryer can be easily achieved, and rice grains are stored. Since it is not necessary to separately prepare a separate container for storage, it is possible to reduce the installation area, save the storage facility cost, and simplify the storage operation. When the temperature difference between the ambient temperature and the outside air temperature is larger than the preset allowable value, the stored grain is automatically circulated while circulating the stored grain so that the temperature difference falls below the allowable value. Since it is cooled, it is possible to change the quality of the grain or prevent the occurrence of dew condensation in the dryer, and it can be stored for a long period of time under a good taste condition.

[Brief description of drawings]

FIG. 1 is a block circuit diagram for carrying out a method for dry storage of grains according to the present invention.

[Explanation of symbols]

 1 Moisture Sensor 2 Drying Control Circuit 3 Finish Moisture Setting Circuit 4 Grain Circulation Motor 5 Heating Device 6 Grain Temperature Sensor 7 Outside Air Temperature Sensor 8 Temperature Difference Detection Circuit 9 Storage Control Circuit 10 Temperature Difference Setting Circuit 11 Outside Air Intake Blower

Claims (1)

[Claims] 1. A grain that circulates and flows in a dryer is exposed to dry air to finish drying, and the grain after drying is stored as it is in the drier without discharging, and during storage of the grain. Grain temperature and outside air temperature are detected over time, and when the temperature difference between the grain temperature and the outside air temperature is larger than the preset allowable value, the stored grain is circulated and exposed to low temperature outside air, and the temperature difference is the allowable value. A method for dry storage of grains, characterized in that the stored grains are cooled as described below.