JPS59104074A - 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 is applicable to dry grains that have a large amount of unevenness and for which accurate detected moisture values cannot be obtained at the initial stage.
Grain temperature, hourly drying rate, and rate are set in advance to dry the grain to satisfy the specified shift.During the drying operation, both bed filling and hourly drying rate can be controlled at the same time. Even if the drying rate cannot be controlled below a predetermined value (・), the vortex device or blower device is controlled to maintain the set hourly drying rate to reduce the drying rate at the same time. This invention relates to a method for drying grains that can be dried for five days to reduce grain generation and provide good taste.

Conventionally, in order to efficiently obtain dried grains with less occurrence of body cracking and good taste, the grain temperature and hourly change S of grade Inmaruei grains were sequentially detected over time, and the tx car etc. , a valuable drying method for drying while keeping the detected grain temperature and the detected hourly drying rate at a preset nf constant of 110 or less according to the moisture content of the grain, was previously disclosed in Japanese by Peng Motoide. 1972-
150475 was developed and is publicly known.

The main purpose of the above-mentioned conventional grain drying method is to automatically dry the grain so as to reduce the occurrence of shell cracking and improve the taste.

By the way, the amount of moisture contained in harvested grains is not always constant, but varies considerably, and the above-mentioned known grain drying method is used to directly dry the grains, which have a large amount of moisture unevenness among the grains. When dried, the detected hourly drying loss rate detected over time changes rapidly in the early stages of drying, and the operation of the heating device and blower are controlled accordingly. Therefore, it is difficult to accurately control the hourly drying loss rate to be less than 11N. On top of that,
As mentioned above, during the initial drying of Iken'MNLa products, which have uneven moisture content, if 1 m of grain is not flilled to below the I91 value, there is a risk that the grain will have poor germination or poor taste. be.

Also, the initial description of dried grains? If the crystal temperature is 30°C or higher or the initial moisture content is 30% or higher, the moisture unevenness among the grains to be dried becomes greater than before, making it increasingly difficult to accurately detect the hourly drying rate. When drying a rug to be dried according to a predetermined value so as to reduce cracking and improve taste, the drying time may take a long time and may not be suitable for practical use.

Therefore, when the above-mentioned grains are dried at a drying speed suitable for practical use, the detection V & m of the dried grains is
= and the hourly drying rate both exceed a predetermined value and cannot be controlled below the predetermined value.As a result, not only shell cracking occurs frequently but also the taste is significantly deteriorated, which is a serious drawback. occurs.

Therefore, in order to solve the drawbacks of the above-mentioned known grain drying methods, the present invention aims to detect moisture unevenness among the grains to be dried and to detect the hourly drying loss rate at the early stage of rolling, where the hourly drying loss rate cannot be accurately detected.
7□Control. After initial drying is performed to eliminate moisture unevenness among the grains to be dried so that the detected value is below a preset value, the moisture unevenness has been resolved. The drying is performed by controlling the heating device and the feeding device so that the detected grain temperature and detected drying rate of the grain to be dried are below the set predetermined value j+i, and the initial grain Moisture is high - When the grain to be dried is dried at a high speed, if both the detected grain and the detected hourly drying rate do not fall below the predetermined value at the same time, the set hourly drying rate The purpose of this invention is to provide a grain drying method that can efficiently dry grain to be dried with less occurrence of shell cracking by controlling the operation of both a heating device and/or a blower device so as to maintain It is.

In view of the above, and in order to solve the drawbacks of the known grain drying methods, the present invention has been developed by detecting the grain temperature of the grain to be dried and the hourly drying time of the grain in a sequential manner over time. In the early stage of drying when there is a lot of moisture unevenness between grains, initial drying is performed while performing tZ rR sub-control so that the detection valley width is less than or equal to the preset 11th grain. After the temperature decreases, one or both of the heating device and the blower device are dried from the inside so that the obtained detection width and detection hourly drying rate become equal to or less than the above-mentioned H [constant 111]. Or, if it is not possible to simultaneously control both the horizontal cutting width of the grain to be dried and the detected hourly drying loss rate to below a predetermined value, use a heating device and/or a blower device. This is a grain drying method that finishes the drying period while maintaining a set hourly drying loss rate while controlling only the Even if there is a lot of unevenness, the moisture unevenness can be quickly resolved without causing poor germination or loss of taste while controlling the grain temperature. The heating device and the blower device are operated under precise control so that the detected grain temperature and the detected hourly drying rate of the grain are below preset values, and dry grains with good taste and less occurrence of shell cracking are efficiently produced. Even with dried grains that have an initial fi '1M or high initial moisture content, it is possible to dry them efficiently with less cracking if you accept that the taste will be somewhat lowered. It produces the effect that can be achieved.

A block circuit for carrying out the grain drying method according to the present invention will be explained below.

In FIG. 1, reference numeral 1 denotes a grain temperature detector for detecting the grain temperature at the proboscis over time during the drying time and sending the detection signal to the comparator circuit 5, according to the present invention. Grain temperature detector 1
is detected every hour, for example, from the beginning of the turning line of the grain to be dried until the end of drying. Reference numeral 2 denotes an hourly drying loss rate detector for detecting the hourly drying rate, that is, the drying speed of the grain to be dried over time during the drying time, and sending the detection signal to the comparison circuit 5, which is according to the present invention. The hourly drying loss standard table 2 is for detecting the hourly drying loss rate of grain to be dried, that is, the drying speed IW, over time from the beginning of drying to the end of drying, for example, every hour.

Reference numeral 3 denotes an hourly drying rate base 's setting circuit, which is predetermined according to the moisture content of the grain when the hourly drying rate of the grain to be dried is detected to be positive U()t. It has the role of sending a signal of the hourly drying rate standard 111X to the comparator circuit 5. Numeral 4 is a grain temperature standard setting circuit, and when the grain temperature of the grain to be dried is accurately detected, the circuit 4 sets the rma temperature standard (Lj) determined in advance according to the moisture content of the grain. It has the role of sending a signal to the comparator circuit 5.

Then, the above-mentioned hourly i 114/, the Keikiji circuit 3 sends a signal of the hourly drying loss rate reference value to the comparison circuit 5 in the early stage of drying when there is a lot of moisture unevenness between the dried grains. A signal is sent only after the moisture unevenness has been reduced, and in the present invention, that point is set to approximately 21.5%, for example, based on experimental values. In addition, the signal from the ψ9 wet base setting circuit 4 is sent to the comparison circuit 5 at the same time as drying starts, regardless of moisture unevenness, and the grain temperature detector 1 is compared with the tQ m reference value, and the signal to be dried is determined. During the drying period, the grain temperature is controlled to be below a predetermined temperature.

For example, as shown in the drying curve graph in FIG.
The hourly drying loss rate standard table is determined to be, for example, 0.6%/hour for drying grains with a moisture content of 15% to a final moisture cycle of 15%, and During the drying period, the grain temperature of the grain to be dried can be maintained at approximately 38°C or less. The reason why is set to infinity is that the harvested grain is approximately J5
This is for the purpose of drying to about 30%.

5 indicates the grain temperature (signals sent over time from the Zenkoki 1 and the hourly drying rate detector 2, respectively, the fj temperature and hourly drying rate standard setting circuit 3, and the grain temperature standard setting circuit 4). The heating device fit 7 is compared with the signals sent over time.
and blower 80 control times Ii! 86, and the comparator circuit 4 normally controls the grain to be dried at a temperature of, for example, 38° C. and an hourly drying rate of, for example, 0.6%/hour or less. It is controlled by
During the drying operation, the values of the valley and hourly drying rate detected by the grain temperature detector 1 and the hourly drying rate detection circuit 2 are determined in the preset 6-width base grass table and the hourly drying rate reference table. The added value (for example, 1 ton 38℃, hourly drying rate 0)
．． 6%/hour), a signal is immediately sent to the control circuit 6 to control the fuel supply to the heating device 7 and/or the air flow rate of the blower device 8. Only the detected hourly drying rate is controlled to maintain the reference value (for example, 0.6%/hour) of the hourly drying rate added in advance to reduce the occurrence of shell cracking. We will make Inuidenozaki products available in Kumamoto style.

Therefore, in the case described above, even if the grain temperature of the grain to be dried is higher than the value in the grain temperature standard table (for example, 38°C), the heating device 6 and the blower device 7 are controlled so that the grain temperature does not exceed the grain temperature. We will not exceed the values in the standard table.

Note that the above grain temperature and hourly drying rate standard table (predetermined values of the present invention) are subject to change at any time based on conditions such as grain amount, outside temperature and humidity, desired drying speed, and grain to be dried. Of course.

Next, its effect will be explained.

Now, when you want to dry grain to be dried with an initial moisture content of 29%, for example, to finish moisture content cycle 15, first, at the start of drying work, measure the moisture content of the grain to be dried using a moisture meter, and then If there is a considerable amount of moisture unevenness between
Initial drying is performed by operating the heating device I and the blower device 8 so that the temperature of the grain to be dried is below a fixed value (for example, 38° C.).

By the way, even in this early stage of drying, WX QA detector 1
The detected grain temperature values and the detected hourly drying rate values detected over time based on the hourly drying rate reference table 2 are sent as signals to the comparison circuit 5.

Therefore, when the dried grains in the moisture outlet 29 are dried to the moisture outlet 21.5 while maintaining the grain temperature below 38°C through this initial drying operation, the moisture unevenness among the dried grains becomes significant. As a result, the hourly drying rate value detected by the hourly drying rate detector 2 becomes stable. In such a state, the hourly drying loss standard setting circuit 3 determines the hourly drying loss standard number (for example, 0.6%/hour) according to the moisture content of the grain as shown in FIG. ) is sent to the comparator circuit 5 together with the signal from the grain temperature reference setting circuit 4, where they are compared.

As a result, due to the time-dependent detection effects of the grain temperature detector 1 and the hourly drying rate detector 2, the grain temperature from the initial moisture content to the finished moisture content of 15% is below 38°C, and the drying rate is below 38°C. Also, a signal is sent to the control circuit 6 so that the water content ratio is 21.5' from 4 to 15 to be 0.6%/hour or less, and this control (based on No. -8, one or both of them are automatically controlled to adjust the hot air temperature or air blowing resistance, and the automatic drying operation is continued in series until the moisture content reaches about 15,000, and the drying is completed.

In addition, using the drying method described above, the initial grain temperature is 30°C or higher,
Alternatively, if you try to dry grains with an initial moisture content of 30 or higher based on the grain temperature table and hourly drying rate detector of the drying method, the detected %2 m and the detected hourly drying rate Both of the reduction rates are set to predetermined values (e.g. grain temperature 3).
There may be cases where it becomes impossible to control the temperature below 8 degrees Celsius (seasonal drying rate: 0.64/hour). When such a thing is detected by the grain temperature detector 1 and the hourly drying rate detector 2,
At this point, the comparator circuit 5 operates and only the hourly drying rate decreases.
A signal is sent to the control circuit 6 so as to maintain the current level (1/hour), and the fuel supply to the heating device 7 is also automatically controlled and detected by the blower device 8 to control both or one of the blower lids. , the number of hourly dry decreases is 1, with only hourly decreases set in advance in the basic table.
10 (for example, Ll, 6%/hour) to efficiently dry the dried grains to a finish moisture content of, for example, 5% (finish moisture content, for example) with less occurrence of shell cracking.

[Brief explanation of drawings]

The drawings are block circuit diagrams for implementing the method according to the invention, and FIG. 2 is a drying curve graph using preset grain temperatures and hourly drying rate detectors. j...-ff1M detector, 2... Hourly drying rate detector,
3... Hourly drying rate reference setting circuit, 4... Grain temperature reference setting circuit, 5... Comparison circuit, 6... Control circuit, 7...
・Warming device, 8...Blower device Patent applicant Kaneko Agricultural Machinery Co., Ltd. J-,”;O,] Figure 1 Procedural amendment (method) April 9, 1981 Patent Application No. 1983-213194 2 , Title of the invention: Grain drying method 3, Relationship with the case of the person making the amendment Patent applicant: 2-21-10 Nishi, Hanyu-shi, Saitama Prefecture (146) Kaneko Noki Co., Ltd. Representative: Kaneko Aijibe 4, Agent: 〒 201 6. Subject of amendment [column for brief description of drawings] 7. Contents of amendment (1) Page 13 of the specification, line 3, one drawing included
Figure 1 is corrected as ".

Claims (1)

[Claims] The laying of grains to be dried and the hourly drying loss rate are detected sequentially over time, and in the early stage of drying when there is a lot of moisture unevenness among grains to be dried, detection u / M is carried out in advance while performing only grain control side 1. Initial drying is performed so that the temperature is below the set predetermined value, and after the moisture content of the boiled food to be dried has decreased, the detected grain temperature and the detected hourly drying rate are below the above n1 constant 1 m. Drying may be carried out by controlling one or both of the heating device, air blower, and device M, or both the detected grain temperature and the detected hourly drying rate of the grain to be dried may be set in advance at the same time. If it is not possible to control the flow to below the specified value, a zero sign will be given to indicate that the dry search was completed while maintaining the set hourly deceleration while controlling both or one of the ship's width device and blower device. grain drying method.