JPH11132658A - Controller for grain dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform discharge operation automatically upon ending the drying operation without requiring any returning motion or a caretaker for discharging operation by storing a reservation for discharging operation when a discharge switch is turned on during the drying operation. SOLUTION: The controller 18 for a grain dryer 2 comprises a control means 20 which stores a reservation for discharging operation when a discharge switch 58 is turned on during operation of the grain dryer 2 and controls the discharge operation upon ending the drying operation. The reservation for discharging operation is stored at the memory section 62 of the control means 20. When the water content of grain measured by a water content gauge 50 is lower than a level being set higher than a set water content and a full sensor 52 provided for a tank storing the discharged grain detects an empty state, the control means 20 stores a reservation for discharging operation being made by turning the discharging switch 58 on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a grain dryer, and in particular, can eliminate the time between the end of drying and the time when the discharge operation is performed, and can quickly perform the next filling operation. The present invention relates to a control device for a grain dryer which can eliminate the need to interrupt the cutting operation and return to the discharge operation operation, thereby terminating the cutting operation quickly.

[0002]

2. Description of the Related Art Grain dryers for drying grains such as paddy are:
A moisture meter for measuring the moisture of the grain is provided, and when the grain moisture value measured by the moisture meter during the grain drying operation reaches the set moisture value set by the stop moisture setting switch, the drying operation is terminated.

[0003] Such a grain dryer is disclosed in
An example is disclosed in Japanese Patent Application Publication No. 313383. The control device of the grain dryer disclosed in this publication is a grain dryer that arranges a hot air chamber and an exhaust air chamber across a grain distribution lower passage and dries the falling grain by hot air generated by a burner and a drying fan. When the detected hot air temperature detected by the hot air temperature detector in the hot air chamber continuously exceeds the set temperature determined by the amount of intrusion and the outside air temperature for a predetermined time, the burner is turned on and off intermittently according to the detected hot air temperature. While maintaining the predetermined hot air temperature, while preventing the deterioration of grain quality,
It performs efficient drying.

[0004]

In the conventional grain dryer, the grain is discharged by performing a discharge operation again after the drying operation of the grain is completed. Generally, the drying operation of the grain dryer is started in the evening of the previous day, and finished in the next morning. If the grain moisture value is relatively high, the process may end around noon on the next day or end in the afternoon.

However, the drying operation of the grain dryer is performed at the time of cutting. Therefore, when the end of the drying operation is around noon or the afternoon of the next day, it is necessary to interrupt the cutting operation and return to the installation location of the grain dryer for the discharging operation. Alternatively, it is necessary to take an answering machine in order to perform a discharge operation on the grain dryer.

For this reason, during the busy harvesting time, the time between the end of the drying operation and the start of the discharging operation is wasted, and time and labor are required for the discharging operation, and time and labor are reduced. There is a disadvantage that loss occurs, and there is a disadvantage that the cutting operation is delayed.

[0007]

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned disadvantages, the present invention relates to a method in which a grain moisture value measured by a moisture meter during a grain drying operation is set by a set moisture value set by a stop moisture setting switch. Control means for storing a discharge reservation when the discharge switch is turned ON during the drying operation of the grain dryer, and controlling the discharge operation after the drying operation is completed. Is provided.

[0008] The control means may be configured such that the fullness sensor provided in the storage tank for the cereal grain when the cereal moisture value measured by the moisture meter is equal to or lower than the high-side set moisture value which is higher than the set moisture value is empty. When the state is detected, control is performed so as to store a discharge reservation by the ON operation of the discharge switch.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The control device for a grain dryer according to the present invention stores, by the control means, a discharge reservation when a discharge switch is turned ON during the drying operation of the grain dryer, and after the drying operation is completed. By controlling the discharge operation, the discharge operation can be automatically performed after the end of the drying operation without returning to the operation of the discharge operation or placing an answering machine.

[0010] The control means of the control device may be arranged such that the grain moisture value measured by the moisture meter is equal to or less than a high-side set moisture value which is higher than the set moisture value and provided in a storage tank for the discharged grain. When the quantity sensor detects an empty state, control is made to store the discharge reservation by turning on the discharge switch, so that it is not necessary to reserve the discharge operation. If the grain cannot be discharged in the quantity state, the discharge reservation is not accepted.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the present invention. In FIG. 2, 2 is a grain dryer, 4 is a blower motor,
6 is a dust motor, 8 is a transport motor, 10 is a circulation motor,
12 is a burner, 14 is a discharge device, and 16 is a discharge damper.

The grain dryer 2 supplies hot air generated by the burner 12 and the blower motor 4 while circulating the grains by the transport motor 8 and the circulation motor 10 during the drying operation, thereby drying the grains. To discharge dust. Further, the grain dryer 2 drives the discharge device 14 and opens the discharge damper 16 during the discharge operation, and discharges the grains to a storage tank (not shown).

The control device 18 for controlling the operation of the grain dryer 2 is provided with control means 20. The control means 20 includes a blast dust drive circuit 22 and a transport drive circuit 24.
A circulation drive circuit 26, a burner drive circuit 28,
A discharge drive circuit 30, a damper drive circuit 32, a display 34, and a buzzer 36 are connected and provided.

The blower / dust drive circuit 22 includes a blower motor 4
And the dust discharge motor 6 is driven. The transport drive circuit 24 includes:
The transport motor 8 is driven. The circulation drive circuit 26 drives the circulation motor 10. The burner drive circuit 28 drives the burner 12. The ejection drive circuit 30 is provided in the ejection device 1.
4 is driven. The drive circuit 32 for the damper includes the discharge damper 1.
6 is driven. The display 34 displays information such as temperature, moisture, and time.

The control means 20 includes an operation switch 3
8, a grain amount setting switch 40, a stop moisture setting switch 42, a grain selection switch 44, a safety device 46,
A temperature sensor 48, a moisture meter 50, a full sensor 52,
Are connected.

The operation switch 38 includes a switch 54,
Drying switch 56, discharge switch 58, stop switch 6
0, and select each operation of the grain dryer 2 to ON / OF
F. The cereal amount setting switch 40 sets the amount of cereal to be inserted. The stop moisture setting switch 42 sets a predetermined set moisture value for stopping the drying operation. The cereal selection switch 44 sets the type of cereal to be dried. The safety device 46 stops operation in an emergency. The temperature sensor 48
Detects grain temperature. The moisture meter 50 measures the moisture value of the grain. The full sensor 52 is provided in a storage tank (not shown) and detects whether the grain is full or empty.

The control device 18 is controlled by the control means 20
During the drying operation of the grain by the grain dryer 2, the grain moisture value measured by the moisture meter 50 is stopped.
When the set moisture value set in is reached, the drying operation ends.

The control device 18 of the grain dryer 2 stores the ejection reservation by the control means 20 when the ejection switch 58 is turned ON during the drying operation of the grain dryer 2;
After the drying operation is completed, the discharge operation is controlled. The discharge reservation is stored in the storage unit 62 of the control unit 20.

Further, the control means 20 controls the storage tank provided in the storage tank for storing the grain whose grain moisture value measured by the moisture meter 50 is equal to or less than the high-side set moisture value higher than the set moisture value. When the amount sensor 52 detects an empty state, control is performed so that a discharge reservation by an ON operation of the discharge switch 58 is stored.

Next, control will be described with reference to the flowchart of FIG.

The controller 18 of the grain dryer 2 performs various settings by means of a grain quantity setting switch 40, a stop moisture setting switch 42, and a grain selection switch 44, and an operation switch 38.
When the drying operation switch 54 is turned ON to start the drying operation (step 100), the drying operation is controlled (step 102).

During the drying operation, the discharge switch 58 is turned on.
It is determined whether or not the operation has been performed (step 104). If this determination (step 104) is YES, it is determined whether the discharge switch 58 has already been turned ON and the discharge reservation is being made (step 106).

If the determination (step 106) is YES, the discharge reservation stored in the storage unit 62 is deleted to cancel the discharge reservation (step 108), and the process proceeds to step 116. If this determination (step 106) is NO, it is determined whether or not the grain moisture value measured by the moisture meter 50 has become equal to or less than the high-side set moisture value which is higher than the set moisture value (step 110).

The high set moisture value is 1 to 3% of the set moisture value.
, For example, a value obtained by adding 2% to 15%.

If the determination (step 110) is YES, the full sensor 52 detects an empty state and determines whether or not the discharge is OK (step 112). If the determination (step 112) is YES, the discharge reservation is stored in the storage unit 62 and the discharge reservation is displayed on the display 34 (step 11).
4), proceed to the determination of step 116.

On the other hand, if the judgment (step 110) and the judgment (step 112) are NO, the process proceeds to the judgment of step 116 without accepting the discharge reservation.

In step 116, it is determined whether or not the grain moisture value measured by the moisture meter 50 has reached the set moisture value and automatic stop has been performed. This determination (step 116) is Y
In the case of ES, stop control is performed (step 118).

If the determination (step 116) is NO, it is determined whether the stop switch 60 has been turned ON (step 120). This judgment (Step 120)
Is YES, the process jumps to the initialization process (step 144). If this determination (step 120) is NO, the process returns to the drying operation control (step 102).

Following the stop control process (step 118), it is determined whether a discharge reservation has been made (step 122).

If the determination (step 122) is YES, the operation is stopped for a predetermined stop time (for example, 30 minutes) (step 124), and the buzzer 36 is turned on for a predetermined operation time (for example, 5 seconds) ( Step 126), ON of the transport motor 8, ON of the circulation motor 10, and O of the discharge device 14
The N / discharge damper 16 is opened (step 128), and the routine proceeds to step 130. This determination (step 122) is N
In the case of O, the process jumps to the judgment (Step 142) whether or not the stop switch 60 is ON.

In step 130, the full sensor 5
It is determined whether or not the storage tank (not shown) is full based on the signal detected by step 2 (step 130).

If the judgment (130) is YES,
The full amount is displayed on the display 34 (step 132), and the process proceeds to step 136. This determination (step 130) is NO
In the case of, it is determined whether or not the discharge is completed (step 134).

If the determination (step 134) is YES, the process proceeds to step 136. This judgment (step 13
If 4) is NO, it is determined whether or not it is full (step 13).
Return to 0).

In step 136, the transport motor 8
Is turned off, the circulation motor 10 is turned off, and the discharge damper 16 is closed (step 136), and after a lapse of a predetermined elapsed time (for example, 10 seconds), the discharge device 14 is turned off (step 138). The completion is displayed (step 140), and the process proceeds to step 142.

In step 142, it is determined whether or not the stop switch 58 has been turned ON. If this determination (step 142) is NO, the stop switch 60
The judgment of N is repeated. This determination (step 142) is YE
In the case of S, an initialization process is performed (step 144).

As described above, the controller 18 of the grain dryer 2 operates the discharge switch 58 during the drying operation of the grain dryer 2.
Is turned on, the discharge reservation is stored and the display 34 is displayed.
, A discharge reservation is displayed, and after stopping the drying operation for a predetermined stop time, the buzzer 6 is operated only for a predetermined operation time to warn of the discharge start and control to start the discharge operation.

Thus, the control device 18 does not need to return or leave the answering machine for the discharge operation during the cutting operation, and can automatically perform the discharge operation after the drying operation. it can.

For this reason, the controller 1 of the grain dryer 2
8 can eliminate the time between the end of the drying operation and the time of performing the discharge operation, and can perform the next insertion work quickly. Further, the control device 18 of the grain dryer 2 can eliminate the need to interrupt the cutting operation and return to the discharging operation, and it is necessary to reduce the time and manpower for the discharging operation during the busy cutting time. In addition, it is possible to avoid the inconvenience of losing time and labor, and to end the mowing operation quickly.

The controller 18 stores in the storage of the discharge reservation by the ON operation of the discharge switch 58 that the grain moisture value measured by the moisture meter 50 becomes equal to or lower than the higher set moisture value which is higher than the set moisture value. The condition is set on condition that the full sensor 52 provided in the storage tank (not shown) of the discharged grain detects an empty state.

It is set that the grain moisture value, which is one of the conditions for storing the discharge reservation, is equal to or less than a value obtained by adding 1 to 3% to the set moisture value. In normal operation, when the drying is completed, the cereal moisture value is checked before discharging.
It is desirable to confirm that the grain moisture value is close to the set moisture value at the end of drying even in the operation of discharge reservation, so the grain moisture value will be less than or equal to the higher set moisture value, which is higher than the set moisture value. Condition is set.

If the grain moisture value is higher than the higher set moisture value (for example, 3% or more higher than the set moisture value),
The drying operation requires a considerable time (for example, 4 hours or more) before the drying is completed. Therefore, when the grain moisture value is higher than the high side set moisture value in the morning when the mowing work is performed, the end of the drying operation is the time to return in the noon or the evening, and the discharge switch 58 is manually operated. It can be operated and there is no need to accept the emission reservation.

The storage tank, which is another condition for storing the discharge reservation, is set to be empty. When the storage tank is full, the discharge cannot be performed, and the discharge reservation is stored on condition that the full sensor 52 detects the empty state. The discharge reservation is stopped by turning on the discharge switch 58 again (steps 106 and 108).

As described above, the control device 18 is provided in the storage tank for the grain that is discharged from the grain when the grain moisture value measured by the moisture meter 50 is equal to or lower than the set moisture value higher than the set moisture value. Under the condition that the full sensor 52 detects an empty state, control is performed so that a discharge reservation by the ON operation of the discharge switch 60 is stored.

Thus, the controller 18 accepts a discharge reservation when the grain moisture value is high and there is no need to reserve a discharge operation, or when the storage tank is full and the grain cannot be discharged. I try not to.

For this reason, the control device 18 can eliminate unnecessary control processing by storing unnecessary and urgent discharge reservations.
No grain overflows from storage tanks.

In this embodiment, the discharge reservation signal is input to the control means 20 by turning on the discharge switch 58 of the operation switch 38 during the drying operation. As shown, an emission reservation switch 64 dedicated to emission reservation can be separately provided. In this case, the discharge switch 58 causes a manual discharge operation to be performed after the drying operation is completed.

[0047]

As described above, the control device for a grain dryer according to the present invention can automatically perform the discharging operation after the drying operation is completed without returning to the operation of the discharging operation or placing an answering machine. .

For this reason, the control device of this grain dryer is
The interval between the end of the drying operation and the start of the discharge operation can be eliminated, and the next stuffing operation can be performed quickly. Further, the control device of the grain dryer can eliminate the need to interrupt the harvesting operation and return to the discharge operation operation, and can save time and manpower for the discharge operation operation during a busy harvesting time. And the inconvenience of causing a loss of labor can be avoided, and the mowing operation can be terminated early.

Further, the control device of the grain dryer has a discharge reservation when the grain moisture value is high and it is not necessary to reserve the discharge operation, or when the storage tank is full and the grain cannot be discharged. Is not received, unnecessary control processing by storing unnecessary and urgent discharge reservations can be eliminated, and the storage tank does not overflow with grains.

[Brief description of the drawings]

FIG. 1 is a control flowchart of a control device of a grain dryer according to an embodiment of the present invention.

FIG. 2 is a block diagram of a control device of the grain dryer.

[Explanation of symbols]

 2 Grain dryer 4 Blow motor 6 Dust motor 8 Conveying motor 10 Circulation motor 12 Burner 14 Discharge device 16 Discharge damper 18 Control device 20 Control means 34 Display 36 Buzzer 38 Operation switch 50 Moisture meter 52 Fullness sensor 58 Discharge switch 62 Memory

Claims (2)

[Claims] 1. A grain dryer in which the drying operation is terminated when the grain moisture value measured by the moisture meter during the grain drying operation reaches a set moisture value set by a stop moisture setting switch. A control device for a grain dryer, characterized by comprising a control means for storing a discharge reservation when a discharge switch is turned ON during a drying operation and controlling the discharge operation after the drying operation is completed. 2. The fullness sensor provided in a storage tank for cereal grains, wherein the cereal moisture value measured by the moisture meter is equal to or less than a high-side set moisture value that is higher than a set moisture value and the grain is discharged. 2. The control device for a grain dryer according to claim 1, wherein when an empty state is detected, control is performed such that a discharge reservation by an ON operation of the discharge switch is stored. 3.