JP3230108B2 - Operation display device for grain dryers, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation display device for a grain dryer or the like.

[0002]

2. Description of the Related Art
For example, in a grain dryer, a plurality of operation modes are set. For example, there are a good-quality drying control mode including a "ventilation operation" in which the burner operation is stopped in view of the condition of grain moisture, a normal drying mode in which the "ventilation operation" can be arbitrarily selected and set, and the like. In the latter case, the operator immediately recognizes that the operation is shifted to the "ventilation operation" immediately after the selection is set.However, in the former case, the operation is not immediately shifted to the "ventilation operation" but is performed through another operation state. In some cases, the operation can be switched to the "ventilation operation", and the operator is forced to perform the unnecessary "ventilation operation" due to whether or not the operation can be surely switched to the "ventilation operation" or an erroneous setting.

[0003]

SUMMARY OF THE INVENTION The present invention is directed to an operation display device such as a grain dryer for solving the above-mentioned drawbacks, wherein the display device is configured to display an operation state and setting items. Among the plurality of operation modes, at least a first operation mode in which a predetermined operation is automatically executed in a predetermined order, and the predetermined operation is selected and executed by arbitrary manual setting. A grain drying device having a second operation mode and a display control means for outputting a reservation content display so as to display beforehand the transition to the next operation operation during the display of the operation operation when the first operation mode is selected; The configuration of the operation display device in a machine or the like.

[0004]

According to the present invention, as described above, when a different operation mode is selected, even if the predetermined operation is the same for each selected mode, the operation automatically shifts to the next operation. In some cases, the next driving operation is displayed during the previous driving operation display, and an erroneous setting or the like can be dealt with in advance, which is advantageous in a case where the next operation is executed with a time delay.

[0005]

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a machine frame of a grain drying apparatus, in which a storage room 2, a drying room 3, and a grain collecting room 4 are stacked in this order, and the drying room 3 is circulated by driving an elevator 5 provided outside.
This is a well-known form in which hot air generated by the combustion of the burner 6 and the suction fan 7 is applied to the portion and dried.

Reference numeral 8 denotes a delivery valve, 9 denotes a lower transfer device connected to the elevator 5, and 10 denotes an upper transfer device connected to the upper side of the lift 5, which can supply grains to the diffusion plate 11 above the storage chamber 2. The burner 6, the grain circulation mechanism, and the like are performed by a computer including a memory that stores a control program necessary for drying control, various data, and the like. That is, the operation panel 1
2 is provided with a display section 13 in the form of a liquid crystal, and four switches 14 to 1 in the form of push buttons are provided along the lower edge of the display section 13.
The emergency stop switch 18 is disposed at a position 7 and slightly away. The functions of the switches 14 to 17 are displayed on the display unit 13, and in the illustrated example, the switches 14 to 17 are configured as operation switches of stuffing, drying, discharging, and ventilation, respectively. This is a configuration that can have different functions.

The built-in control unit receives the switch information on the operation panel 12 and the detection information from the sensors disposed in each part of the dryer frame 1 and performs the necessary comparison operation to control the burner combustion amount. The start / stop control of the grain circulation system and the display content control of the display unit 13 are performed. The switches on the operation panel 12 can set the grain type, the set moisture (finished moisture), the amount of filling, the timer increase / decrease, and the like, in addition to the setting of filling, drying, discharging, and ventilation.

FIG. 4 is a control block diagram. In addition to the setting information from the switches, the arithmetic and control unit 19 of the computer built in the control box having the operation panel 12 has the moisture meter 20 detection information and the lift 5 Grain detection information of the grain flow detector 21 provided in the throwing portion, hot air temperature detection information, and the like are input. On the other hand, as the output information, a combustion system signal of the burner 6, for example, a fuel supply signal, a flow control signal thereof, or a vertical transfer spiral, an elevator 5, a delivery valve 8
And the like, a motor control signal for the grain circulation system, a motor control signal for the suction fan 7, and a display output to each display unit.

The display section 13 of the liquid crystal screen is configured to switch from various operation selection screens of the basic screen (FIG. 3) to a grain type / drying mode setting screen of FIG. 5, a continuous operation screen of FIGS. In the basic screen, in the extension operation in which the switch 14 is turned on among the settings of the switches, a partially circulating motor is driven in order to drive a transfer spiral or an elevator in the upper and lower transfer gutters. In the drying operation in which the switch 15 is turned on, in addition to the above, all the motors of the circulating system including the delivery valve are driven, and a driving signal is also output to the burner combustion system and the suction fan 7 motor.
In the discharge operation in which the switch 16 is turned on, the elevator 5
In the ventilation operation in which all the circulating system motors such as the drive motor and the delivery valve 8 drive motor are driven and the switch 17 is turned on, the burner combustion system is turned off in the drying operation state and the outside air is allowed to act on the circulating grains. .

When the drying operation is selected on the basic screen, the screen of the display unit 13 is switched to a grain type / drying mode setting screen, and the functions of the switches 14 to 17 are switched between grain type selection and drying mode selection (for example, constant temperature drying). Mode, drying speed control mode, high-quality rice drying control mode in which ventilation operation is performed according to moisture variation), screen change, and screen return.

Here, when the high quality rice drying control mode is selected, the operation is performed in the order of, for example, hot air drying-moisture measurement-large variation-ventilation operation-hot air drying-drying pause-hot air drying-moisture measurement-stop. The screen display during driving displays various messages together with illustrations as shown in FIG. The message indicates the current operation status, such as "During ventilation" (a), grain type (b), remaining ventilation time (c), amount of stuffing, etc., and display of hot air drying transition. Is displayed.

Similarly, the display unit 13 screen during the drying operation includes:
In addition to the illustration showing the remaining drying time, the operation status display "Drying" a, the grain type B, the remaining drying time G, the time until the halt drying, the halt start moisture, the moisture unevenness
The status indications of blue rice are displayed. The operation of the above example will be described.

First, the basic screen is called and the switch 14
Is turned on, it is inserted into the storage unit 2 via the elevator 5 that drives the grain to be dried. When the insertion is completed, the stop switch 16 is turned on to temporarily stop each unit. Next, in order to shift to the drying operation, the switch 15 is turned on, the screen is switched to the grain type / drying mode setting screen, and the grain type setting switch 14 is pressed in the previous stage to set the type of the stuffed grain, and the drying mode is set. Select and set. In addition, a desired dry finish moisture value is set by the moisture setting function switch in the same manner on a separately provided setting screen.

By doing so, the elevator 5 vertically moving spiral, the delivery valve and the like start operating, and the burner 6 is also driven to start hot air drying. Here, the drying speed of the hot air temperature is determined in advance for each selected grain type, and the hot air temperature is determined according to the drying speed. The hot air acts while flowing down the grain flow path of the drying chamber 3 and is dried by the action of the hot air. Such circulation is repeated until the moisture reaches the predetermined moisture. However, when the high-quality drying control mode is selected, if the initial moisture variation is calculated and is equal to or more than the predetermined range, the process temporarily shifts to the “ventilation operation”, and the hot air is returned again. It is reserved to return to drying.

During the initial moisture variation calculation period, the display unit 1
The three screens are displayed as "drying" and display the grain type, the expected remaining time of impression, and the like. When the mode is automatically switched to the ventilation mode thereafter, the screen is switched to the operation state display screen indicating that ventilation is being performed, and the "ventilation mode" is displayed. While displaying "medium", a display e indicating that the process is to be shifted to hot air drying in addition to the grain type, the remaining ventilation time, the amount of stuffing, and the like as described above is performed.

After a ventilation operation for a predetermined time, the mode is switched again to hot air drying, and when the water content reaches a predetermined moisture value, the drying is stopped. The burner combustion system and the grain circulation system are turned off to keep the grain in a refined state. After the scheduled time has passed, the process shifts to hot air drying again and shifts to finishing hot air drying. In the above-described high-quality drying control mode, the "ventilation operation" is started under certain conditions regardless of the operator's intention, and it is left to the control unit when the subsequent hot-air drying is started. . Therefore, by displaying the transition to hot air drying on the screen during ventilation, the operator can grasp the previous situation in addition to the current situation, and can grasp the necessity of the initial setting and the situation of the subsequent drying operation, etc., which is convenient. It is.

On the other hand, when the "ventilation operation" is selected by operating the switch 17 from the basic screen, the operation immediately shifts to the ventilation operation after the switch 17 is operated, and the display of the transition to the drying operation is omitted from the "in ventilation" screen. . In addition, the function switch 14 is a switch for increasing the ventilation time,
Functions as the "decrease" switch. As described above, in the “during ventilation” screen, the transition to the drying operation is different when the drying mode is different, but the display of the transition to the hot air drying can be displayed or omitted in accordance with this, and the operator can be distinguished and notified.

When the high-quality rice drying control mode is selected, so-called pause drying is performed in which the burner combustion system and the grain circulation system are stopped at a preset moisture value to transfer moisture between grains. The time t from the point in time to the start of the pause and the expected impression time T are calculated and displayed on the drying screen (FIG. 7) (FIG. 7). Where time t and T
The calculation is as follows: t = (measured moisture value-17.5%) × α [17.5%: moisture value to be put into pause drying, α: 1 / drying speed] T = (measured moisture value−stop moisture) × α + pause It is determined by the set time (Fig. 8). In addition, the drying-in-progress screen is configured to display the pause drying time and the timing of entering the pause drying (depending on grain moisture) (ヲ).

[Brief description of the drawings]

FIG. 1 is a perspective view of a grain dryer.

FIG. 2 is a front sectional view of the grain dryer.

FIG. 3 is a front view of a control panel of a control box.

FIG. 4 is a control block diagram.

FIG. 5 is a diagram illustrating a display example of a display unit.

FIG. 6 is a diagram illustrating a display example of a display unit.

FIG. 7 is a diagram illustrating a display example of a display unit.

FIG. 8 is a flowchart.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Dryer frame 2 Storage room 3 Drying room 4 Graining room 5 Elevator 6 Burner 7 Suction fan 8 Feeding valve 9 Lower transfer device 10 Upper transfer device 11 Diffusion board 12 Operation panel 13 Display part 14-17 switch 18 Emergency stop switch 19 Arithmetic control unit 20 Moisture meter 21 Grain flow detector

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F26B 25/00, 17/14

Claims (2)

(57) [Claims] 1. An operation display device such as a grain dryer,
The display device is configured to display an operation state and setting items, and among the plurality of operation modes, at least a first operation mode in which a predetermined operation is automatically executed in a predetermined order; There is a second operation mode in which each of these predetermined operation operations is selected and executed by an arbitrary manual setting. When the first operation mode is selected, a transition to the next operation operation is displayed in advance while the operation operation is being displayed. An operation display device in a grain dryer or the like provided with a display control means for outputting a reservation content display as much as possible. 2. The operation display device according to claim 1, wherein the predetermined operation is a ventilation operation and a drying operation of the grain dryer.