JPS5930387Y2 - Grain sticking prevention device in storage tank for grain dryer - Google Patents

Description

[Detailed description of the invention] The present invention is designed to prevent grains from drying by drying grains, which have been exposed to hot air during drying and whose grain temperature has increased. The present invention relates to a grain sticking prevention device in a storage tank for a grain dryer, which prevents grains from sticking to grains and achieves good drying work.

A storage tank, a ventilation drying cylinder, and a take-out tank are sequentially installed three-dimensionally in the dryer body from the upper stage to the lower stage, and the grains supplied to the storage tank are sequentially distributed through the storage tank and the ventilation drying Jlik take-out tank. In a grain dryer that performs the drying operation while circulating the grain, the grain stored in the storage tank is exposed to hot air at the front stage, and the temperature of the grain is raised to approximately 35°C to 40°C.

By the way, when grains are temporarily stored in a 1-inch storage tank with a temperature of about 35°C to 40°C as mentioned above, a portion of the water that has migrated from the inside of the grain to the surface will evaporate due to the water diffusion transfer effect. The temperature difference between the outside temperature and the dew point causes water droplets to form on the inner wall of the storage tank, and some of the stored grains stick to the water droplets and are no longer able to flow down, resulting in uneven flow and eventually cracking. There is a drawback that this occurs, and there is a strong desire to improve this.

In view of the above, the present invention has been developed by completely covering the storage tank with a decorative board lined with a heat insulating material so that even grains with high grain temperature can be stored in the storage tank. Even if evaporated water vapor is generated in the storage tank, the temperature difference with the outside temperature prevents the water vapor from reaching the dew point, causing grains to stick to the inner wall of the storage tank and cause cracking due to uneven flow. The purpose of this invention is to provide a grain sticking prevention device in a storage tank for a grain dryer that completely eliminates this problem.The configuration of the device according to the present invention will be described below with reference to a preferred embodiment shown in the accompanying drawings.

Reference numeral 1 denotes a rectangular cylindrical dryer body capable of drying grains by blowing hot air during the process of straightening the grains, and inside the dryer body 1, grains are temporarily stored from the upper stage to the lower stage. A storage tank 2 for storing the grains, a ventilation drying cylinder 3 that can dry the grains by blowing hot air at an appropriate temperature on the grains flowing down from the storage tank 2, and a take-out tank for taking out and storing the grains dried in the ventilation drying cylinder 3. 4 are sequentially stacked three-dimensionally so that the insides communicate with each other.

The storage tank 2 and the take-out tank 4 are connected via an elevator 5 so that the dried grains can be circulated and returned, and hot air is sent into the ventilation drying cylinder 3 on the front side of the dryer main body 1. A hot air generator 6 is provided for this purpose.

7 is a hopper attached to the lower side of the elevator 5, and 8 is a dust exhaust pipe for centrally exhausting the exhaust hot air and generated dust after being used for drying to the outside of the machine. .

The storage tank 2 formed as described above has a rectangular cylindrical shape with both upper and lower sides open, and the circumferential surface thereof has a reinforcing overhanging edge 9.
A suitable number of vertically arranged . .

A decorative board 11 lined with a heat insulating material 12 is removably attached around the storage tank 2 to cover it.

The heat insulating material 12 is provided with a groove 13 into which the overhanging edge 9 is fitted in order to bring it into close contact with the wall surface of the storage tank 2 for good insulation against the outside temperature. The tensioned decorative board 11 is attached using tensioning tools such as tensioning bolts.

The decorative board 11 shown in FIGS. 1 and 2 is cut and molded to match each of the four sides around the storage tank 2. Of course, it is also possible to cover the storage tank 2 by forming it from a sheet.

Next, the operation of the present invention will be explained.

Now, in the figure, if the elevator 5 is started after grains are put into the hopper 7 for loading, the grains will be delivered to the storage tank 7 one after another.
and is supplied into the ventilation drying cylinder 3.

When a predetermined amount of grain is supplied, the grain supply operation to the hopper 7 is stopped, and the hot air generator 6 and other operating members are started.

Then, the grains that flow sequentially from the storage tank 2 into the ventilation drying cylinder 3 are exposed to hot air and are somewhat dried, then fall into the take-out tank 4, and are returned to the storage tank 2 by the elevator 5. carry out an action.

As a result, the grain temperature of the grains stored in the storage tank 2 due to the above-mentioned circulation return action becomes approximately 35° C. to 40° C. due to the drying action, and water is evaporated from the surface of the grains during temporary storage.

By the way, the area around the storage tank 2 is completely isolated from the outside by a decorative board 11 lined with a heat insulating material 12.
The water vapor released inside will not reach its dew point due to the above-mentioned adiabatic effect.

Therefore, even if there is a temperature difference between the storage tank 2 and the outside, no water droplets will be generated on the inner wall of the storage tank 2, and the stored grains will be kept in a leveled state without unevenness in the air flow. 3, where it is exposed to hot air again and dried.

Therefore, even if the drying action is interrupted while the grains are circulated several times, the grains can be dried well without causing cracking.

In short, the present invention carries out drying by installing a storage tank 2, a ventilation drying cylinder 3, and a take-out tank 4 three-dimensionally in order from the upper stage to the lower stage in the dryer main body 1, and spraying hot air on the grains being rectified. 1
Even in the case of a grain dryer with a drying method, since the storage tank 2 is surrounded by a decorative board 11 lined with a heat insulating material 11 to promote heat insulation from the outside air, the grain temperature can be increased by hot air drying. While the grains are stored in the storage tank 2, no matter how much surface moisture evaporates due to moisture diffusion and transfer, no dew point phenomenon occurs on the inner wall surface of the storage tank 2, and the stored grains are kept inside the storage tank 2. The surrounding surface of the storage tank 20 is covered with a decorative board 1, which allows the grains to flow down smoothly in a flat state without sticking to the wall surface, thereby allowing the grains to dry evenly without causing cracking.
1 has a beautifying effect.

[Brief explanation of the drawing]

The drawings show one embodiment of the device of the present invention, and the first
The figure is an overall perspective view, and FIG. 2 is an exploded perspective view of the main parts. 1...Dryer body, 2...Storage tank, 3
...... Ventilation drying cylinder, 4... Taking out tank, 1
1... Decorative board, 12... Insulation material.

Claims (1)

[Scope of utility model registration request] In a dryer in which a storage tank, a ventilation drying cylinder, and a take-out tank are stacked three-dimensionally in order from the upper stage to the lower stage in the main body of the dryer, the periphery of the storage tank is covered with a decorative board lined with insulation material. A device for preventing grain sticking in a storage tank for a grain dryer, characterized by: