JPS61205784A - Cereal drying system - 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 This invention relates to a grain drying method for a grain dryer, and can also be used in a drying plant.

Conventional Japanese Patent Publication No. 58-53270 describes a structure in which grain drying is controlled by making the temperature of hot air from a burner coincide with a reference hot air temperature set by a setting device.

Problems to be Solved by the Invention The drying control of grain drying involves controlling the drying temperature, time, etc. in accordance with preset drying setting standards, as in the above-mentioned prior art. It is difficult to determine the state and progress of drying, and if there is no monitoring during the process, there is a risk that an unexpected drying process may have occurred, and even if overdrying occurs, it may not be possible to take immediate action. This invention seeks to easily know the drying progress at any time during the drying process.

Means for Solving the Problems This invention causes a display (2) to select and display a drying curve (1) according to a preset grain drying mode, and performs controlled drying along the selected drying curve. Progress (3)
The grain drying method is characterized by displaying the following:

Functions and Effects of the Invention To dry grains, set the drying mode according to the drying conditions, etc., and the corresponding drying curve (1) will be displayed on the display (2), and the drying control will be performed according to this drying curve. (2)
Since the drying results are displayed as the drying progress (3), it is possible to clearly compare the drying curve (1) with the controlled drying progress (3). This allows you to know the drying state during operation at any time.

Example In the example shown in Figure 1, the dryer has a grain storage chamber (4) at the top.
A drying room (5) is provided in communication with the lower part of the drying room, and a discharge room (7) is provided in the lower part for receiving dried grains and collecting and discharging them to the grain raising machine (6). (5) is a ventilation plate (8) with ventilation holes on both the left and right sides, and a hot air chamber communicating with the air suction tube (1■) equipped with a burner (9) is installed on the outside of this ventilation plate (8). It is configured to draw in hot air, and an air exhaust chamber communicating with the exhaust fan f111 is provided on the outside opposite to this, and a ventilation plate (8), a drying chamber (5), etc. are crossed from the hot air chamber. It is configured to suction and exhaust air from the ventilation chamber to the ventilation fan (11). (1) A supply spiral connected to the upper end of the grain hoist (6) is used to suck and exhaust grains from the ventilation chamber (4, 1) to the storage chamber (4, 1). supply.

(+31 is a delivery blade, which is installed at the lower end of the drying chamber (5) and rotates to cause the grains to flow down. (1Φ is a discharge helix.

(IS) is a grain moisture sensor that detects the moisture content of grains by sampling the grains in the storage chamber (4);
(10 is a control panel, a storage chamber (4) and a drying chamber (5)
The loading amount dial (1η,
It has a drying moisture dial i11 for setting the drying moisture of the grains, a timer setting dial (19) for setting the drying time, etc. In response to these inputs, fuel supply to the burner (9), display (2), etc. A control computer ff1l is provided.

In the memory C211 of the computer ff1Q, data is stored in advance for each type and variety of grain to be dried through experiments or the like.
A drying curve (1) is stored for each initial moisture value of each grain in the undried state, and also shows the moisture change of the grain for each drying period up to the end of each drying, and this drying curve (1) is displayed on the display ( 2) is selected and displayed. In addition, the setting dial f271+η for grain type, initial moisture, etc. is provided on the control panel (Illi), and the grain selection dial (23
Select the type of grain, select the initial moisture content of the grain using the initial moisture dial (23), select the amount of grain loaded using the tensioning amount dial (1), and use the timer setting dial [19
By setting the time required for drying in step 1, the drying curve (1) of the grain to be dried is displayed on the display (2), and the actual drying progress ( 3) = 3- The control configuration is such that the drying curve can be displayed in the same coordinate system on the display (121) that is already displayed.

During grain drying work, store the grains to be dried in the storage chamber (41), operate each selection dial on the control panel flGl, and select the type of grain, amount of filling, and moisture sensor (detected in the old). By selecting a drying mode such as initial moisture or final dry moisture, a drying curve (1) is displayed on the display (2).
) will be displayed, and if you select the time required for drying from this drying curve (1) with the timer setting dial (+91), the desired drying curve (1) will be selected, and from now on, the time required for drying will be selected along this drying curve (1). drying control is performed.

For example, depending on the drying mode setting, 1. The initial moisture content of the grain is 27%, and the set moisture content of the grain at the end of drying is 1.
If it is 5%, the drying curve for each drying time (1)
are displayed as thin lines on the display (2), so if you select one of these drying times using the dial (1ω), the drying action will be performed along this selected drying curve (1). The moisture content of the grain (3) during this drying process is displayed as a thick line along this drying curve (1), and therefore the thick line progress curve (3) matches the thin drying curve (11). , The drying state to be controlled can be immediately known by the discrepancy, and in the case of discrepancy, the amount of deviation can also be estimated.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partial front view, FIG. 2 is a control circuit diagram, and FIG. 3 is a side sectional view. In the figure, symbol (1) is the drying curve, (2) is the display,
(3) shows the drying progress curve.

Claims (1)

[Claims] Drying curve (1) according to the preset grain drying mode
is selectively displayed on a display (2), and the progress (3) of controlled drying is displayed along the selected drying curve (1).