JPH038472B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grain tank for filling grains to be dried, a drying air supply device for supplying drying air to the grains loaded in the grain tank, and a drying air supply device for feeding the grains to be dried. The present invention relates to a grain drying method for drying grains using a grain drying device including a stirring and mixing device for stirring and mixing grains poured into a tank.

More specifically, in the grain drying method of drying grains using the above-mentioned grain drying device, a predetermined amount of grains to be dried are placed in the grain tank and the drying process is performed. After that, when replacing raw grains that are brought in next, some of the grains that have been processed are left in the grain tank and only a portion is taken out, and the amount of grains that have been taken out is Add the appropriate amount of raw grains into the grain tank and proceed with the drying process while stirring and mixing.By repeating this process, high temperature drying in the early stage of drying can be avoided, and mixed drying can be performed at low temperatures. The present invention relates to an improvement in a grain drying method that enables drying of grains.

In the above-mentioned grain drying method, during the drying process, grain is newly added and dried, so the grain is harvested by a combine harvester or the like in the field and transported to a workshop or facility where a grain drying device is installed. Since the amount of grain is not constant, when taking out grains from a grain tank to store them in the grain tank, the amount of grains to be taken out is calculated as the amount of grains brought in. In order to correspond to the grain size, it is necessary to weigh the amount brought in and the amount taken out one by one, and this weighing is difficult, and when new grains are added, the moisture value of the whole grain in the grain tank is There is a problem in that it is difficult to control the operation of the grain drying device because the amount changes each time the grain is added.

The present invention solves this problem and produces grains that avoid high temperature drying in the initial stage of drying without requiring troublesome operations or increasing the capacity of grain drying equipment (or facilities). The purpose of this method is to enable efficient drying, and it was completed based on knowledge obtained through various studies to solve the above-mentioned problems.

That is, a grain tank 1 (or tank bin) for storing grains in a grain drying device (or grain drying facility).
The floorboard 10 is made of a mesh or perforated board to be breathable, and an air guide path 11 is formed on the bottom side of the floorboard 10 to blow drying air. The blower device 2 is connected to
And the height above the floor of the grain tank 1 is adjusted to
The height of the pile is several times higher than that at which raw grains can be dried without deterioration by the drying air supplied by the grain tank 1. Separate amounts of grains are loaded and dried until a predetermined moisture content is reached, and then
After putting a predetermined amount of grains within the above-mentioned divided amount onto the grain layer and stirring and mixing them with the stirrer 3, or while stirring and mixing, drying air is sent by the blower device 2. , through this mixing and drying, the moisture content of the grains is reduced to around the predetermined moisture value,
After that, an amount of grains smaller than the added amount of grains is taken out from the grain tank 1, and then a predetermined amount of raw grains within the aforementioned divided amount is put into the grain tank again, Constantly reduce the moisture content of the grains in the grain feed to around the predetermined moisture value by stirring and mixing and feeding dry air,
After that, an amount of grain smaller than the amount of grain added is again taken out from the grain tank, and this process is repeated until the grain tank 1 is filled with grains that are gradually increasing. By doing so, it is possible to dry grains using a normal grain drying device or grain storage drying device without requiring any troublesome operations, avoiding high temperature drying in the initial stage of drying. Due to what happened.

And, again, this kind of drying of the grains is carried out by putting the grains finally carried into the grain tank,
He realized that if the grain tank was filled with grains, the grain drying equipment could be used efficiently and the equipment costs for the grain drying equipment could be reduced. is the following, y=NQ/n...(1) y'=(N-1)Q/n...(2) However, y is the amount of cargo received per day (the amount brought in per day), and Q is the amount of grain in the grain tank. Capacity N is the number of times that the same amount of grain as the capacity of the grain tank passes through the grain tank, n is the number of days of baling in one season, and y' is the amount of grain taken out from the grain tank (the amount of grain processed per day). ) It has been found that it is sufficient to calculate the amount y' of grains to be taken out using the calculation formula, and to take out the amount y' of grains from the grain tank each time a new grain is added to the grain tank. This is due to the fact that

For this reason, in the method of the present invention, the floor plate is formed to be breathable, and the grain tank of the grain drying device is provided with an air guide path leading to the blower that sends drying air below the floor plate. , the grains to be dried are divided and charged into a predetermined amount within the range of the stacking height that can be dried without deterioration by blowing drying air by the air blower, and the grains in the divided amount are charged. The grains are dried, and then a predetermined amount of grains is newly added on top of the divided amount of grains, and after stirring and mixing them, or while stirring and mixing, drying air is blown by the blower. and dry it.
Afterwards, some of the grains are removed from the grain tank,
Furthermore, in the grain drying method in which the process of additionally charging the predetermined amount of new grains on top of the remaining grains, performing agitation mixing and drying, and then repeating the process of taking out a part of the grains, The amount of grain taken out when taking out some of the grains from the container is smaller than the amount of grains to be additionally charged,
In addition, the present invention proposes a method for drying by setting the timing at which the grain vat is filled with accumulated residual grains to be a predetermined time based on the difference in the amount of grains.

Also, the amount taken out is y=NQ/n... y'=(N-1)Q/n... However, y: Amount received per day, N: The same amount of grain as the capacity of the grain tank. Number of times each time it passed through the tank, Q:
The present invention proposes a means for drying grain by setting the amount to be taken out y' calculated based on the formula where the capacity of the grain tank is n: the number of days for receiving goods, and y' is the amount taken out.

Next, examples will be described in detail.

The capacity Q of the grain tank 1 of the grain drying device A configured and installed as shown in Fig. 1 is 150 tons, and the receiving period (holiday 2
If the actual receiving period (excluding days) is 15 days and the total amount received during this receiving period is 450t, then
Since the amount of cargo received per day is 30 tons, N is calculated from the formula: y=150N/15=30 ∴ N=3. That is, it is sufficient to use the grain tank 1 so that grains having a capacity of Q pass through it three times.

From this, the amount of grain taken out per day y', which is the amount taken out of grain tank 1, is given by the formula: y' = (3-1) x 150/15 = 20. From then on, set it to 20t.

That is, first, 30 tons of raw grains (moisture content 24%) are charged into the grain tank 1, and the moisture value is 19~19.
Ventilation drying on the first day until 20% (pre-drying)
On the second day, 30 tons of raw grains (moisture content
24%) was added and stirred and mixed.
After several hours of ventilation drying, 20 tons of grains are taken out of the grain tank 1, and the grains remaining in the grain tank 1 are subjected to ventilation drying.

The grains taken out here have an average moisture content of 19 to 20%, and are sent to a finishing dryer where they are finished dried to a moisture content of around 16%.

Next, on the third day, 30 tons of raw grains were again charged into the grain tank 1, stirred and mixed, and then ventilated for several hours, and then 20 tons of grains were taken out. The grains are sent to a finishing dryer for finishing drying, and drying air is sent to the grains remaining in the grain tank 1 by a blowing device 2 to dry them.

By repeating this process, grain tank 1
The amount of grain remaining and deposited in the grain tank gradually increases, and on the last day of the receiving operation period, the grain tank 1
It becomes full inside.

FIG. 2 is an explanatory diagram showing this state, and in the figure, the shaded area shows the amount of grain remaining and accumulating in the grain tank 1 as the number of operating days passes.

In addition, FIG. 3 is a chart of the receiving and discharging times of the above embodiment, showing from the first day to the seventh day,
The rest has been omitted.

Further, FIG. 4 is an explanatory diagram showing the fluctuation state of the moisture content of the grains remaining in the grain tank 1 when drying work is performed using the steps shown in FIGS. 2 and 3. It is. In the figure, the solid broken line represents the moisture content of the grains remaining in the grain tank 1, and the chain line represents the moisture content of the additionally charged grains.

In addition, in the above embodiment, as shown in FIGS. 2 and 4, the grains that are filled in the grain tank 1 on the final day of receiving the cargo are stored in the specified amount without additional grains being added. In addition to extruding the grains at intervals during ventilation drying, the removed grains are sent to the finishing dryer for finishing drying, but after the dryer is full,
There are cases in which the drying process is continued until the finished moisture value is reached without removing the grains, or the drying process is shifted to storage drying.

As explained above, in the method of the present invention, first, a predetermined amount of grain is charged and charged into a grain tank and then ventilated and dried, and a predetermined amount of grain is added to the dry grain. The moisture value of the additionally added grains is reduced by either agitation mixing or agitation mixing and ventilation drying, and then some of the grains are removed from these grains to remove the remaining grains. Then, when drying the grains, the process of adding additional grains, stirring and mixing, removing some grains, and ventilation drying is repeated. The amount of grain that is added to the grain tank sequentially and the amount of grain that is taken out from the grain tank as dried grains are calculated each time the grain is added and taken out. The amount of grain remaining in the grain tank is set to increase at a predetermined rate, and the grain tank becomes full at a preset date and time. Grain drying equipment or grain drying facilities can be used so that the grain tank is full on the last day of the period, and drying can be carried out by efficiently using them without excess or deficiency, reducing the cost of installing facilities and equipment. It becomes like this.

[Brief explanation of drawings]

Figure 1 is a longitudinal side view of the grain drying device used in the method of the present invention, Figure 2 is an explanatory diagram of the fluctuation state of the amount of residual grain in the grain vat in the method of the present invention, and Figure 3 is the process of the method of the present invention. FIG. 4 is an explanatory diagram of the state of change in the moisture content of grains in the grain tank in the method of the present invention. Explanation of drawing symbols, A... Grain drying device, 1...
Grain tank, 10... Floor board, 11... Air guide path, 2... Air blower, 3... Stirrer.

Claims (1)

[Scope of Claims] 1. The grain to be dried is placed in the grain tank of the grain drying device, which has a floor plate made to be air permeable and an air guide path leading to a blower that sends drying air below the floor plate. The grains to be dried are divided and charged based on a predetermined amount within a range of pile height that can be dried without deterioration by supplying drying air by the blower, and the grains in the divided amount are dried. and then additionally charging a predetermined amount of grains on top of the divided amount of grains,
After stirring and mixing them, or while stirring and mixing them, drying is carried out by sending drying air using the blower, and then some of the grains are taken out from the grain tank and the above-mentioned grains are placed on top of the remaining grains. In a grain drying method in which a predetermined amount of new grain is additionally charged, stirred, mixed, and dried, and then a part of the grain is taken out, a part of the grain is removed from the grain tank. The amount of grain taken out is set to be less than the amount of grain to be additionally charged, and the time when the grain tank is filled with accumulated residual grain due to the difference from the amount of grain is set at a predetermined time. A method of drying grains that is characterized by keeping them. 2. The grains to be dried are placed in the grain tank of the grain drying device, which has a floor plate that is breathable and has an air guide path that leads to a blower that sends drying air below the floor plate. A predetermined amount within a range of pile height that can be dried without deterioration by supplying drying air with a blower device is divided according to the standard and charged, the divided amount of grains is dried, and then the grains are Add a new predetermined amount of grains on top of the same amount of grains,
After stirring and mixing them, or while stirring and mixing them, drying is carried out by blowing drying air using the blower, and then some of the grains are taken out from inside the grain tank and placed on top of the remaining grains. A grain drying method in which a fixed amount of new grain is additionally charged, stirred, mixed, and dried, and then a part of the grain is removed from the grain tank. The amount taken out at the time is y=NQ/n... y'=(N-1)Q/n... However, y: Amount received per day, N: The same amount of grain as the capacity of the grain tank. The number of times each time it passed inside, Q:
A method for drying grains, characterized in that the capacity of a grain tank is set to the amount y' to be taken out, which is calculated based on the following formula: where n is the number of days for receiving goods; y' is the amount to be taken out.