JPS61205776A - Method and device for cooling and discharging dried cereal in cereal drier - 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 Field of Industrial Application The present invention provides a method for drying grains by placing them in a grain dryer that circulates the grains while blowing hot air through them, cools the dried grains to a predetermined temperature, and then discharges the grains. and its equipment.

2. Description of the Related Art Conventionally, a single grain dryer that circulates grains and dries them by blowing hot air through cloth is described, for example, in Japanese Patent Publication No. 48-36753. The provided co-drying facility (co-drying preparation facility or co-drying preparation storage facility) was known before the filing of this application, as described in, for example, Japanese Utility Model Publication No. 53-26392.

Problems that the invention aims to solve Grain dried by hot air is exposed to high temperatures (often 35 degrees Celsius).
Even if the grain temperature is left as is (around 40℃), the temperature of the grains will not drop easily because of its large heat capacity. Leaving dried grains at high temperatures for long periods of time may not be desirable in terms of maintaining quality, but high grain temperatures during hulling can also cause skin irritation.
This may lead to deterioration of quality.

For this reason, it is necessary to quickly cool the dried grain to near room temperature.

By the way, in the conventional grain dryer mentioned above, the fuel supplied to the burner of the hot air generator is stopped at the end of drying, and the air is continued until the burner cools down. Since the temperature hardly decreases and the grains are discharged while still being hot, the above-mentioned problems cannot be solved.

Therefore, in the present invention, when discharging dry grains, by circulating and fluidizing the grains and ventilating room temperature air,
Drying in a grain dryer that can quickly lower the temperature of the grain before discharging it, prevent the quality of dried grain from deteriorating during storage, and reliably prevent skin slippage during hulling. The object of the present invention is to provide a method for cooling and discharging grains and an apparatus for carrying out the method.

Means for Solving the Problems The technical problem of the present invention is to achieve the above-mentioned object, and to provide a method for that purpose, particularly in a grain dryer that circulates grains and dries them by blowing hot air through them.1) - Grain When the discharge switch of the dryer is turned on, the grain is circulated and room temperature air is ventilated, the grain temperature is measured, and the grain is automatically discharged outside the dryer when the predetermined cooling condition is reached. This is a method for cooling and discharging dried grains in a grain dryer, and the device is particularly suitable for a grain dryer that circulates grains while blowing hot air to dry them, and when the grains are turned on, the grain circulation system Along with operating the mechanism,
A cooling control device that operates a blower to circulate normal temperature air, a grain temperature sensor that measures the temperature of the grain pile layer, and a grain circulation system that automatically discharges the grain circulation system when the grain temperature sensor detects a predetermined temperature. A cooling discharge device for dried grains in a grain dryer, characterized in that the device includes a discharge control device that switches the state.

Function According to the method of the present invention, after drying is completed in the grain dryer, when the discharge switch is turned on to discharge the dried grains, the dried grains are circulated and ventilated with normal temperature air. Therefore, the dried grains are quickly cooled, but when the grain temperature measurement results reach a predetermined value, the dried grains are automatically discharged outside the machine.

In the apparatus of the present invention, the grain dryer is equipped with a cooling control device, a grain temperature sensor, and a discharge control device, thereby realizing the operation according to the method described above.

Example Embodiments of the device according to the present invention will be described with reference to the drawings.

FIG. 1 shows the configuration of a control system in a dry grain cooling and discharge device. 1 is a grain discharge switch, 2 is a cooling control device, 3 is a grain temperature sensor, and 4 is a discharge control device. The cooling control device 2 controls the operation of the grain circulation system mechanism 5 and the blower 6. The grain temperature sensor 3 detects the temperature of the grain pile layer in the dryer, and measures the temperature of the grain during cooling at appropriate times. The discharge control device 4 operates to switch the grain circulation system mechanism 5 to the discharge state when the grain temperature sensor 3 detects a predetermined temperature.

After the drying is completed, when the discharge switch 1 is turned on to discharge the dried grains, the grain circulation system mechanism 5 is operated by the cooling control device 2, and the dried grains are circulated and cooled by the blower 6 blowing room temperature air. be done. The temperature of the grain accumulation layer during cooling is measured by the grain temperature sensor 3, and when the temperature reaches a predetermined value (for example, a temperature slightly higher than room temperature), the grain circulation system mechanism 5 is automatically put into the discharge state by the discharge control device 4. The switched and cooled dry grain is discharged outside the machine.

FIG. 2 shows a single grain dryer 7 as an example. In this grain dryer 7, 8 is a tempering tank, 9 is a ventilation drying section, 10 is a take-out chamber, and the take-out chamber 10 and the tempering tank 8 are connected by an elevator 11, A grain circulation system mechanism 5 is configured, which circulates the grain from 8 through ventilation drying 9, a take-out chamber 10, and an elevator 11. 12 is a hot air generator, to which the blower 6 is connected.

A discharge gutter 13 is connected to the upper part of the elevator 11.
A circulating discharge switching shutter 14 is provided here. The grain temperature sensor 3 is arranged inside the tempering tank 8. The circulation discharge switching shutter 14 is switched and controlled by the discharge control device 4.

FIG. 3 shows the main parts of the co-drying facility, and this co-drying facility includes a dryer 15 with the same configuration as the single grain dryer T.
A plurality of fuel and storage tanks 16 are each installed. In the co-drying facility shown here, the discharge control device 4 is configured to select an empty one of the storage tanks 16, 16, and carry it in. It consists of an operation control device.

Effects of the Invention In short, since the present invention is constructed as described above, when the discharge switch is turned on to discharge dry grains, the dried grains are rapidly cooled by room-temperature air while circulating and flowing, and the temperature of the grains is maintained at the desired temperature. It is possible to lower the temperature to the desired temperature and then automatically discharge the grain, which has the effect of maintaining the quality of the dried grains and preventing skin chafing during hulling.

[Brief explanation of the drawing]

The drawings show an embodiment of the device according to the invention,
Fig. 1 is an explanatory diagram of the configuration of the control system, Fig. 2 is a cross-sectional view showing a single grain dryer, and Fig. 3 is a configuration diagram of the main parts of the co-drying facility. 1... Grain discharge switch, 2... Cooling control device,
3... Grain temperature sensor, 4... Emission control device, 5...
Grain circulation system mechanism, 6...Blower

Claims (4)

[Claims] (1) In a grain dryer that circulates grain while blowing hot air to dry it, when the grain discharge switch is turned on, the grain is circulated and room-temperature air is passed through, the grain temperature is measured, and the specified cooling state is maintained. A method for cooling and discharging dried grains in a grain dryer, characterized in that the grains are automatically discharged outside the dryer when the drying occurs. (2) In a grain dryer that circulates grain and dries it by blowing hot air through it, when the grain discharge switch is turned on, the grain circulation system is activated, and at the same time, the cooling system is activated to activate a blower to blow room temperature air. A control device, a grain temperature sensor that measures the temperature of the grain accumulation layer, and a discharge control device that automatically switches the grain circulation system mechanism to a discharge state when the grain temperature sensor detects a predetermined temperature. A cooling discharge device for dry grain in a grain dryer, characterized by: (3) Cooling discharge of dried grains in the grain dryer according to claim 2, wherein the grain dryer is a single unit, and the discharge control device opens and closes a discharge shutter. Device. (4) The grain dryer constitutes a co-drying facility, and
Cooling of dried grain in the grain dryer according to claim 2, characterized in that the discharge control device selects and carries in an empty one out of a plurality of storage tanks in the co-drying facility. Ejection device.