JPH0340316B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grain drying method for drying grains by operating a grain drying device according to a predetermined drying process, and a means for tempering and drying the grains during the drying process. It is about improvement.

Drying of grain by operating a grain drying device is usually done by controlling each operating part of the grain drying device according to a program set in the control section, and adjusting the temperature and temperature to suit each stage of the drying process. This is done by supplying hot air at an air volume to the grains to perform a predetermined drying process, and then automatically stopping the operation of the grain drying device at the end of the drying process. The drying process is progressed while tempering and drying the grains by circulating the drying part to which the supply is supplied and the storage part to which the supply of hot air is cut off so that the drying action is performed intermittently.

This is because when drying grains, if the moisture difference between the surface side and the core side of the grains becomes large, the grains will crack or change in quality, so hot air is forced against the grains. This is to temporarily cut off the supply to level out the moisture level inside the grain, and then blow hot air on it again.

However, tempering drying, which is performed by circulating grains between a drying section and a storage section, limits the operation and loading amount of the grain circulation transfer device that circulates and flows the grains. There is a problem that makes driving control troublesome.

By the way, tempering drying, which is carried out to level out the moisture content within grain particles when grains are dried by showering them with hot air using a grain drying device, involves two conditions: supplying hot air and cutting off the supply of hot air. It is only necessary to repeat this state repeatedly.In order to do this, it is possible to set a period of suspension of operation during the drying process when the grain dryer is in operation. During the drying process, all of the grains loaded into the grain drying equipment are tempered and dried at the same time. A means for making an operation suspension period exist is known, for example, as disclosed in Japanese Patent Laid-Open No. 184882/1982.

However, in the conventional method, a timer is built into the control device that controls the operation of the grain drying device, and the operation is stopped for a preset length of time at a preset time. If the timing and length of the outage period to be incorporated into the drying process are changed, the time set in the built-in timer and the control operation must be changed, and the drying process must be changed. There is a problem in that it is not possible to perform tempering and drying according to the properties of the grains.

The present invention has been made in order to solve this problem, and the tempering drying is carried out during an operation stop period that is incorporated into the drying process. The purpose of this study is to develop a new method for drying grains.

In the present invention, as a means for achieving the above-mentioned object, the grain drying device is controlled so as to be able to operate during each time period in which the day is divided into a number of predetermined lengths. At the same time, a setting means is provided for controlling the operation by setting a desired time period selected from the time periods as a suspension period of operation regardless of other conditions,
Grain drying characterized by setting a desired time period selected by the setting means as an operation suspension period, operating the grain drying device, and performing tempering drying during a drying suspension period due to the operation suspension period. It raises the law.

Next, an example will be described.

1 and 2 show the operating panel and electrical circuitry of an automatic control device for a grain drying device used to carry out the method of the invention.

In FIG. 1, reference numeral 1 indicates an operation panel provided on the outer surface of the body of the grain drying apparatus, and reference numerals a, . . . indicate setting means and setting switches provided in parallel with the operation panel 1.

In this example, the number of setting switches a...
There are 12 setting switches a-1 to a-12, and the setting switches a... are arranged in a row from left to right. And these setting switches a...
There are 12 time zones divided by 12, which is the number of setting switches a..., for the 24 hours.
minutes), and the second setting switch from the left, a-2, is assigned the time range from 2:00 a.m. to 4:00 a.m. according to the arrangement order of the setting switches a..., and each of the assigned The time zone is displayed below each setting switch a... according to the columns divided into morning and afternoon, such as 0 to 2, 0 to 4, numbers, symbols, and letters W.
It is displayed.

These setting switches a... are connected to a clock circuit 2 that outputs the time as a symbol corresponding to the time.
are connected to each other via discrimination circuits 3, . . . In this example, the clock circuit 2 is a normal one that continuously outputs the time up to the minute as a symbol, and the output signal is converted every minute. and each setting switch a
The discrimination circuits 3 connected between the clock circuits 2 and
It is set to determine whether the output signal has a symbol corresponding to the time within each time zone assigned to each setting switch a, and to determine whether the output signal is at the time within the assigned time zone. When the determination is made, the setting switch a is turned on and conducts between the setting switch a and the clock circuit 2, and the output signal sent from the clock circuit 2 is set to flow to the setting switch a.

Furthermore, these setting switches a... are respectively connected to power relays 4 provided in the circuit 5 of the motor which is the power source for operating the grain drying device, and the above-mentioned output signals are sent to the power relays 4. This causes the power relay 4 to turn on, turn on the motor circuit 5, and put the grain drying device into operation, and the output signal does not flow to the power relay 4. Then, the power relay 4 is turned off, the motor circuit 5 is turned off, and the operation of the grain drying apparatus is stopped.

Furthermore, these setting switches a... are constructed as independent switches that can individually turn on and off the connection to the clock circuit 2 or the power relay 4 by manual operation. In the embodiment, the structure for causing these setting switches a to perform the above-mentioned on/off operations is configured as a push button type switch that is turned on by pressing, and lights up when turned on by pressing. An indicator lamp is built into the case of the push button.

Next, the actual drying process performed in the above-mentioned grain drying device will be explained.

The operation of loading the grain to be dried into the grain drying device is carried out in the usual manner. When the grain drying device is operated to dry the grain loaded in the grain tank of the grain drying device, the operation panel 1 installed on the outer surface of the grain drying device is operated. Parallel setting switches a... are turned on every other time, for example, the first setting switch a-1, the third setting switch a-3, and the fifth setting switch a-5. Perform the operations in advance.

Then, from this state, a start switch appropriately provided in the power supply circuit is turned on to start the operation of the grain drying apparatus. Then, the grain drying device is operated only during the time slots assigned to the setting switches a... that are turned on, and the grain drying equipment is operated only during the time slots assigned to the setting switches a... that are turned off. Grain drying equipment will stop operating.

For this reason, the grains to be dried in the grain dryer are supplied with hot air from the hot air generator, similar to the drying method using the conventional grain dryer, only during the hours when the grain dryer is in operation. Therefore, during times when the grain drying equipment is not operating,
The supply of hot air is cut off and the grains are left in the grain dryer, and all of the grains in the grain vat of the grain dryer are tempered and dried at the same time.

As explained above, the grain drying method according to the present invention is a grain drying method in which grains are dried through a predetermined drying process by operating a grain dryer. The system is controlled so that it can be operated in each of the many time periods divided by the length of time, and a desired time period selected from these time periods is set as a period of suspension of operation regardless of other conditions. A controllable setting means is provided, and the grain drying device is operated by setting a desired time period as an operation stop period using the setting means, and tempering is performed during a drying stop period during the operation stop period. Since drying is carried out, when drying grains using a grain drying device, tempering drying, which is carried out during an operation stop period built into the drying process, can easily be carried out during the desired time period and desired length of time during the drying process. The timing and length of the outage period for tempering drying that is incorporated into the drying process can be easily changed depending on the properties of the grain to be dried or the working conditions. It becomes like this.

Moreover, tempering and drying of grains during the drying process can be carried out during the period when the operation of the grain drying equipment is suspended without being restricted by changes in the loading amount or the circulation time of the grains. .

[Brief explanation of the drawing]

FIG. 1 is a front view of an automatic control device used to implement the present invention, and FIG. 2 is an explanatory diagram of an electric circuit. 1...Operation panel, a...Setting switch, W...
...Numbers, symbols, characters, 2...Clock circuit, 3...Discrimination circuit, 4...Power relay, 5...Motor circuit.

Claims (1)

[Claims] 1. In a grain drying method in which grains are dried through a predetermined drying process by operating a grain drying device, the grain drying device is operated in a number of time periods each having a certain length of time. In addition to controlling the system so that it can be operated, a setting means is provided that can control the operation by setting a desired time period from those time periods as a period of suspension of operation, regardless of other conditions. A grain drying method characterized in that a grain drying device is operated by setting a desired time period as a suspension period of operation by a means, and tempering drying is performed during a drying suspension period due to the suspension period of operation. .