JPH0544592B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention improves the drying capacity of a grain dryer by 100% even when the grain to be dried is rice paddy or wheat, which have different drying conditions.
This invention relates to a grain drying method that can efficiently dry grains by making the most of the grains.

[Conventional technology] Traditionally, communal drying facilities for grains were
As described on page 19 of "Rice Center (Storage and Drying Facility)" published by the Japan Agricultural Mechanization Association in October 2017, various types of rice are known, from receiving the goods to the drying process. As shown in Figure 2, the structure is such that the received grain is directly sent to the dryer.
Alternatively, the grain is stored in a grain tank and then loaded into a dryer.

[Problems to be solved by the invention] By the way, in the conventional grain drying method of this type, drying conditions such as drying speed vary depending on the type of rice paddy or wheat. For example, in the case of wheat, relatively high speed drying is required. However, since rice grains tend to crack, they must be dried at a slower speed than wheat.

On the other hand, the drying capacity of the dryer is designed to reach 100% when it is adjusted to the fastest drying grain, so for example, in the case of wheat, if the drying capacity is set to the full capacity, the drying capacity will be maximized and the heat generated will be maximized. drying capacity of the machine
However, in the case of rice that must be dried at a low speed, the drying capacity cannot be used at 100% because even if the rice is fully loaded, the amount of heat generated must be lowered to perform the drying process. Therefore, there was a problem that the drying efficiency decreased.

In the present invention, a grain dryer and a grain tank are provided as a pair, and a grain circulation device that circulates the grain between the pair of grain dryer and grain tank is provided. The purpose of the present invention is to provide a grain drying method that can fully utilize the drying capacity of a grain dryer even in the case of rice paddy that is dried at low speed, and does not cause a decrease in drying efficiency.

[Means for solving the problem] In order to achieve the above object, in the grain drying method of the present invention, when the grain to be dried is rice paddy,
After filling both the grain dryer and grain tank, which are installed as a pair, the grain is dried in the grain dryer while circulating the grain between the pair of grain dryers and the grain tank using the grain circulation device, and the dried grain is dried in the grain dryer. When the grain is wheat, it is loaded into a grain dryer at full capacity and then dried while circulating and flowing.

In addition, a pair of grain dryers 101 and grain tanks 1
A required number of grain circulation devices 119 are installed according to the scale of the communal drying facility, and a plurality of grain circulation devices 119 are correspondingly provided.

[Function] When drying grain, for example, wheat, which can be dried at high speed, only the grain dryer 101 is fully loaded with wheat, and the heating value of the grain dryer 101 is maximized to increase the drying capacity to 100%. If circulation drying is performed in a state where the grain is fully utilized, drying can be accomplished efficiently without using one of the grain tanks.

However, in the case of grains that are dried at low speed, such as rice, the amount of grain that produces the maximum calorific value must be larger than that for grains that are dried at high speed. In addition, rice grains exceeding this amount are stored in the grain tank 102 as well. Then, the rice is passed through the grain circulation device 1 between the grain dryer 101 and the grain tank 102.
By circulating the grain through the grain dryer 19, it is possible to maximize the calorific value of the grain dryer 101 and achieve 100% drying capacity while efficiently circulating drying.

[Example] An example of a grain drying apparatus for implementing the method of the present invention will be described.

In FIG. 1, 101 is a grain dryer, 102
are grain tanks, and these are provided as a pair. The grain dryer 101 has an upper ventilation drying chamber 103 and a lower portion thereof a removal chamber 104.
A feeding outlet 1 equipped with a feeding roll 105 is provided between the ventilation drying chamber 103 and the taking-out chamber 104.
06 is formed, and a take-out conveyor 107 is installed horizontally at the bottom of the take-out chamber 104. Further, the grain dryer 101 is equipped with an elevator 108, and a discharge conveyor 107 is connected to the lower part of the elevator 108. The upper part of the grain tank 102 is the storage chamber 10
9. The lower part thereof is a take-out chamber 110, and between the storage chamber 109 and the take-out chamber 110 is a pay-out roll 111.
A delivery port 112 is formed, and a delivery conveyor 113 is installed horizontally at the bottom of the delivery chamber 110. In addition, an elevator 11 is provided in the grain tank 102.
4, and a discharge conveyor 113 is connected to the lower part thereof. Reference numeral 115 is a tension conveyor, and a cargo receiving elevator 1 is installed on the conveyance starting end side of the conveyor.
16 is connected to the loading conveyor 115, the upper part of the grain dryer 101, and the upper part of the grain tank 102 by a loading gutter equipped with a respective shutter.
The upper part of the grain dryer 101, the upper part of the grain tank 102, and the discharge conveyor 115' are respectively connected via a three-way switching valve 117. The upper part of the elevator 114 on the side of the grain tank 102 is also connected via a three-way switching valve 118 to the upper part of the grain dryer 101, the upper part of the grain tank 102, and the discharge conveyor 115', respectively. Therefore, the elevators 108, 114, switching valves 117, 118, etc. constitute a grain circulation device 119. At the upper part of the ventilation drying chamber 103 of the grain dryer 101, there is a level switch 120 for sensing grain accumulation.
is provided, and is configured such that the sensing operation of this level switch 120 enables supply to the grain tank. In addition, the discharge conveyor 11
The conveyance end side of 5' is connected to a dry grain tank 121, etc.

In the grain drying apparatus of this embodiment, the received grain can be fully loaded into the grain dryer 101, and the excess amount can be stored in the grain tank 102 for circulation drying, so that wheat, etc. The grain dryer 101 can maximize its calorific value to achieve 100% of its drying capacity, not only for items that dry at high speeds, such as rice grains, but also for items that dry at low speeds, such as rice paddy.

In addition, the grain dryer 101 and the grain tank 10
In No. 2, grain can be circulated in each elevator 108 and 114 by switching the switching valves 117 and 118, so the grain tank 102 can be used for temporary storage of grain while the grain is being dried in the grain dryer 101. It is also possible to carry out drying operations smoothly in grain drying facilities.

[Effects of the Invention] In short, the present invention has the above-described method. Therefore, in the case of grains that can be dried at high speed, such as wheat, only the grain dryer 101 is filled to capacity, and in the case of grains that can be dried at a low speed, such as rice paddy. In the case of grains to be dried, the grain dryer 101 is filled with grain, and the excess amount is filled into the grain storage tank 102, and these are circulated together. By maximizing the calorific value of the Not only can the machine 101 be used alone, but the grain tank 102 can also be stored and discharged by itself, which brings about various effects such as increasing grain drying efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of a grain drying apparatus for carrying out the grain drying method according to the present invention, and FIG. 1 is a schematic configuration diagram thereof, and FIG. 2 is an explanatory diagram of a conventional example. . 101...Grain dryer, 102...Grain tank, 119...Grain circulation device.

Claims (1)

[Claims] 1 When the grain to be dried is rice paddy, after filling both the grain dryer and grain tank that are provided as a pair, the grain is circulated between the pair of grain dryer and grain tank using a grain circulation device. A grain drying method characterized in that the grain to be dried is dried in a grain dryer while the grain is being dried, and when the grain to be dried is wheat, the grain dryer is loaded only at full capacity and then dried while being circulated and flowed. .