JPS60181578A - Method of drying cereal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention automatically controls the moisture value of grains to be dried, measured over time, to approach a reference moisture value for each preset drying time. The present invention relates to a grain drying method capable of obtaining high quality dried grain without producing damaged grain such as.

A grain drying method that performs so-called drying loss rate control, which corrects and controls hot air temperature so that the moisture value of the grain to be dried during drying approaches a reference moisture value for each preset drying time, was previously developed by the present applicant. The grain drying method of that invention was developed by a patent application filed on December 5, 1982, and a patent application filed in 1982.
It is pending at the Japan Patent Office as No.-213193.

By the way, according to the grain drying method related to the above patent application,
Since the moisture value of the grain being dried is dried according to a preset reference moisture value under favorable conditions, no matter how much the outside temperature changes during drying, there will be no cracking or insufficient drying. However, if the amount of dried grain to be loaded into the grain dryer is less than a certain amount, The correction value of the hot air temperature is too large compared to the case where the amount exceeds the full amount, making it difficult to maintain proper drying control.

Therefore, the present invention aims to improve the grain drying method according to the above-mentioned patent-pending invention, and even if the amount of grain to be dried loaded into the dryer is less than a certain amount, the correction value range of the hot air temperature is adjusted accordingly. It is an object of the present invention to provide a grain drying method that can maintain appropriate drying control and obtain high quality dried grains.

In view of the foregoing, in order to achieve the above object, the present invention provides a method in which the moisture content of grains to be dried is measured over time, and the measured moisture value is compared with a reference moisture value for each preset drying time. The method is characterized in that the difference is detected, the hot air temperature is controlled in a preset temperature range corresponding to the difference in moisture value and the amount of grain to be packed, and drying is performed by bringing the measured moisture value closer to the basic moisture value. A method of drying grains, and according to this method,
The moisture value of the grain to be dried during drying can be dried in accordance with the preset standard moisture value under favorable conditions, and even when the amount of loaded grain is less than a certain amount, This has the effect that high-quality dried grains can always be efficiently obtained without causing drying or insufficient drying.

The grain drying method according to the present invention and the apparatus for carrying out the method will be explained below.

In FIG. 1, 1 is a moisture measuring device, 2 is a reference moisture value setting circuit, and 3 is a comparison circuit. and sends the measurement signal to the comparator circuit 3,
The reference moisture value setting circuit 2 sets a reference moisture value for each drying time and inputs the signal to the comparison circuit 3iC.

4 is a hot air temperature control circuit, 5 is a fuel supply pump,
The hot air temperature control circuit 4 receives a signal of the difference between the measured moisture value and the reference moisture value sent from the comparison circuit 3, and controls the fuel supply pump 5 to control the hot air temperature within a preset temperature range.
This is what drives the. For example, the temperature range is 1 when the amount of grain is full (20 koku) and the difference between the measured moisture value and the reference moisture value is in the range of ±0.11 to ±0.50%.
It is set to ±10°C in the range of 5°C and ±0.51 to ±1.00%. A difference in moisture value of less than ±0.10% is within an acceptable range and does not require temperature control (see Figure 2). On the other hand, 6 is a grain filling detector, 7 is a temperature width correction circuit,
The grain loading amount detector 6 is used to set or automatically detect the amount of grain loaded in the dryer, and the temperature range correction circuit T receives the signal from the grain loading amount detector 6. Accordingly, a signal is sent to the hot air temperature control circuit 4 to modify the temperature range of the hot air temperature control. The corrected value for the temperature range is, for example, when the grain amount is 12 koku, the difference in moisture value is in the range of ±0.11 to ±0.50%, and - is 1 ±4°C.
In the range of ±0.51 to 1.00%, the temperature should be ±8°C (see Figure 2). Note that the temperature width correction circuit 7 is
The structure is such that a temperature width correction signal is sent out continuously or in stages in accordance with the amount of grain being loaded.

Next, its effect will be explained.

When the grain to be dried is loaded into the dryer and the drying operation is started, the moisture content of the grain to be dried is measured at regular intervals by the moisture meter 1 during drying. Then, this measured moisture value is compared with the reference moisture value in the comparator circuit 3, a signal representing the difference is detected, and a control signal is sent to the hot air temperature control circuit 41C. The hot air temperature is corrected according to a predetermined temperature range according to the difference in temperature, and drying is continued while being controlled so that the measured moisture value approaches the reference moisture value. Incidentally, the amount of grain in the wafer is detected by the grain amount detector 6, and a temperature width correction signal corresponding to the amount of grain in the wafer is input from the temperature width correction circuit 1 to the hot air temperature control circuit 4, so that the amount of grain in the wag is detected by the grain amount detector 6. Regardless of whether the amount exceeds a certain amount, up to full capacity, or below a certain amount, proper drying control is always maintained to produce high-quality dried grains without cracking or underdrying. can be obtained efficiently.

[Brief explanation of drawings]

The drawing is a block diagram of an apparatus for implementing the grain drying method according to the present invention, and FIG. 2 is an explanatory diagram of its operation. 1... Moisture measuring device, 2... Reference moisture value setting circuit, 3
...Comparison circuit, 4...Hot air temperature control circuit, 5...
Fuel supply pump, 6... Grain loading detector, 7... Temperature range correction, circuit patent applicant, Kaneko Agricultural Machinery Co., Ltd. procedural amendment (method) June 7, 1980, 1. Indication of the case Japanese Patent Application No. 59-36325 2, Name of the invention Grain drying method 3, Person making the amendment Relationship to the case Patent applicant 2-21-10 Nishi, Hanyu City, Saitama Prefecture (146) Representative of Kaneko Agricultural Machinery Co., Ltd. Person Kaneko Aijibe 4, Agent 201-5, Date of amendment order 6, “Brief explanation of drawings column” in the specification subject to amendment 7, Contents of amendment (1) Page 6 of the specification In line 10, "The drawing is" should be corrected to "Figure 1 is".

Claims (1)

[Claims] The moisture of the grain to be dried is measured over time, the difference between this measured moisture value and the reference moisture value for each preset drying time is detected, and the difference in moisture value and the amount of grain to be loaded are determined. A grain drying method characterized by controlling hot air temperature within a preset temperature range and drying by bringing a measured moisture value close to a reference moisture value.