JPH1068588A - Drying controller for grain drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deterioration of quality of grain by a method wherein a drying starting time, set previously by the operation of a timer reservation unit, is cancelled during a drying time, set by the operation of a timer setting means, or after the completion of the drying time. SOLUTION: A timer setting means 40 is operated to set a drying period of time and a starting time of drying is reserved and set by a timer reservation unit 46 while the reserved and set starting time of drying is inputted into an operating device. When the starting means 31 of the operating device, which starts the drying operation, is operated, a dryer is started and the drying work is effected until the set drying time is finished, then, the drying work is finished. When the drying starting time, reserved and set by the timer reservation unit 46, comes in the completion of the drying work, the inputted drying starting time is cancelled by a control device 47. According to this method, the deterioration of quality of the grain can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying control device for controlling a reserved drying time in a drying control of a grain dryer.

[0002]

2. Description of the Related Art Conventionally, when a drying operation for drying a grain with a grain dryer is started, the drying time is controlled by operating a timer setting means of an operating device for starting, stopping and controlling the dryer. The drying start time is reserved by the timer reservation unit, and the reserved drying start time is input to the operation device. When the starter for starting the drying operation of the operating device is operated, the dryer is started, and when the drying operation is performed until the set drying time is completed, the drying device is automatically stopped by the operating device. And the drying of the grain is stopped.

At the end of the drying operation, when the drying start time set by the operation of the timer reservation unit is reached, the drying device is again started and controlled by the operating device, and the drying operation is performed again for a predetermined time. Then, the operation device controls the dryer to stop, and the operation of drying the grain is stopped.

[0004]

When the drying start time set by the timer reservation unit is reached after the drying operation time set by the operation of the timer setting means, the drying operation is started again. If the dryer is not equipped with a moisture sensor for detecting the moisture of the grain, especially the grain will be over-dried, which may reduce the quality of the grain. Is intended to be eliminated.

[0005]

For this purpose, the present invention provides a timer setting means 40 for setting a drying time for drying a grain, and operates at the start of each operation such as setting, drying and discharging of a grain. Operating device 14 provided with respective starting means 31 and stopping means 32 operated at the time of stopping, and a grain dryer in which a drying start time reserved and set by operation of the timer reservation unit 46 is input to the operating device 14. During the drying time set by the operation of the timer setting means 40, or when the drying time has expired, the timer reservation unit 46
And a control device 47 for canceling the drying start time reserved and set by the above operation is provided.

[0006]

When the drying operation for drying the grain with the grain dryer is started, the drying time is set by operating the timer setting means 40 of the operating device 14 for starting, stopping and controlling the dryer. Then, the timer start unit 46 sets a reservation for the drying start time, and the reservation set drying start time is input to the operation device 14. This operating device 1
When the starter 31 for starting the drying operation of Step 4 is operated, the dryer is started, and the drying operation is performed until the set drying time is completed. And the drying of the grain is stopped.

During the drying or at the end of the drying operation,
When the drying start time set by the timer reservation unit 46 is reached, the inputted drying start time becomes:
The drying operation is canceled by the control device 47, and the restart operation of the dryer is not controlled by the operation device 14, so that the drying operation is not performed.

[0008]

When the drying time set by the timer setting means 40 of the operating device 14 has been reached and the drying operation has been completed, the drying start time set by the timer reservation unit 46 is reached. However, the drying start time is canceled, and the re-drying operation is not started. Therefore, the grains do not become over-dried, and the quality of the grains can be prevented from deteriorating.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. The figure shows a circulation type grain dryer 1 for drying grains.
1 shows a state in which a moisture sensor 2 for detecting the moisture of the grain, a burner 3 for generating hot air, and the like are mounted by order.

The dryer 1 is provided with a transfer trough 5 and a ceiling plate 6 in which a transfer spiral is rotatably mounted above a machine wall 4 in a rectangular shape which is long in the front-rear direction. A grain storage chamber 7 for storing grains is formed. The machine wall 4 forming the storage chamber 7 is provided with a level window (not shown) for visually checking the stored grains, and the level window is provided with the number of characters capable of displaying the storage amount and the like.

The grain drying chambers 8, 8 are provided below the storage chamber 7 and between the left and right exhaust chambers 9, 9 and the central blowing chamber 10, and below these drying chambers 8, 8, Discharge valves 11 for distributing and flowing down the grains are rotatably supported on respective shafts. The collecting gutter 12 rotatably supports a transfer spiral and is provided below each of the drying chambers 8 and 8 so as to communicate with each other.

The burner 3 is provided inside a burner case 13, and the burner case 13 is detachably attached to the outside of the front machine wall 4 in front of the front machine wall 4 so as to correspond to the inlet side of the blower chamber 10. And an operation device 14 for starting and stopping the dryer 1, the moisture sensor 2, the burner 3 and the like for each of the operations of filling, drying, and discharging, is attached to and detached from the outer surface of the front side machine wall 4. It is provided freely.

An exhaust fan 15 is provided on a rear exhaust wall 17 at the center rear side of an exhaust passage chamber 16 provided on the rear machine wall 4 so as to communicate with the left and right exhaust chambers 9, 9. The wall 4 is provided with a fan motor 18 for driving the fan 15 to rotate. The valve motor 19 drives the delivery valves 11 and 11 to rotate via a speed reduction mechanism.

The fuel pump 20 has a fuel valve 71 and is provided outside the lower plate of the burner case 13.
The fuel in 1 is sucked and supplied to the burner 3. The blower 22 is provided on the outer side of the upper plate, is driven to rotate at a variable speed by a blower motor 23 for speed change, and blows combustion air corresponding to the supplied fuel amount to the burner 3 with the blower 22.
The hot air generated from the burner 3 and the outside air passing through the burner case 13 are mixed to form dry hot air.

The diffusion board 24 is provided at the center in the front-rear direction of the bottom plate of the transfer gutter 5 and below the supply port for supplying the transfer kernels to the storage room 7, and the diffusion kernels are uniformly diffused and reduced to the storage room 7. ing.
The grain raising machine 25 is provided on the outer side of the front side machine wall 4 and has a belt with a bucket conveyor 26 stretched inside. The upper end is provided with a discharge cylinder 27 between the starter of the transfer gutter 5. The lower end portion is provided with a supply gutter 28 between the end portion of the grain collecting gutter 12 and communicates therewith.

The grain raising machine motor 29 is mounted on the bucket conveyor 2.
The belt with 6, the transfer spiral in the transfer gutter 5, the diffusion board 24, the transfer spiral in the grain collecting gutter 12, and the like are rotationally driven. The moisture sensor 2 is provided substantially at the center of the grain raising machine 25 in the vertical direction. The moisture sensor 2 is rotated by the transmission of an electric measurement signal from the operation device 14 to rotate the moisture motor 30. Each part is driven to rotate, and bucket conveyor 2
At step 6, the grains falling during transportation to the upper portion are received, and while the grains are pinched and pulverized, the water content of the pulverized grains is detected.

The timer reservation unit 46 is provided in a box shape and provided on the side of the operation device 14 in front of the front machine wall 4, and the operation of the timer reservation unit 46 can reserve a drying start time. The timer reservation unit 4
6 is input to the control device 47 of the operation device 14.
The power is supplied to the operating device 14.
Is connected to and inputted to the timer reservation unit 46.

The operating device 14 is a box-shaped push button for starting the drying machine 1, the moisture sensor 2, the burner 3 and the like on the surface plate of the box body for each of operations of drying, discharging and discharging. Each ON-OFF switch starting means 31, a stopping means 32 for stopping operation, a moisture setting means 33 for setting a finishing target moisture of kernels, 12.0% to 0.5% of moisture by type
The display lamps 34 for displaying up to 17.0% at intervals with numerals or the like, the grain type setting means 35 for setting the hot air temperature generated from the burner 3, the respective display lamps 36 for each grain type, The setting amount of the setting amount 37, the number of the stones, for example, if the dryer 1 has 18 stones, the display lamps 38 indicate the number of stones from 6 to 18 at intervals of 2 stones by 18 numerals.
Moisture correcting means 39 for correcting the grain moisture value, timer increasing / decreasing setting means 41 and 42 for increasing or decreasing the timer setting time of a timer setting means 40 for setting the drying time, buzzer stopping means 43, various display items Display section 4 for digitally displaying
4 and a monitor display lamp 45 are provided. When it is desired to set the target finish moisture of the grain, for example, to 14.5%, the moisture setting means 33 is turned ON, and the display lamps 34 of the six display lamps 34, which are sequentially turned on, are turned on. When the moisture setting means 33 is turned off, the finish target moisture 14.5% can be set, and the other setting means 35 and 37 can be set by the same operation.

The control device 47 is provided in the operation device 14, and has a timer contact input of an external timer reservation unit 46,
The digital input circuit 48 to which the determination with the moisture sensor 2 is attached and the digital sensor information is input, the comparison circuit 50 to which the detection of the frame rod 49 is input, each setting means 31, 31, 3
1,32,33,35,37,39,40,41,4
2, 43, a digital input circuit 51, a moisture sensor 2, a hot air temperature sensor 52, and an outside air temperature sensor 5.
3, an analog input circuit 55 to which a detection value detected by the exhaust air temperature sensor 54 and analog sensor information are input;
A / D conversion circuit 56, serial data receiving circuit 57, control microcomputer 58 for performing arithmetic and logical operations and comparison operations on inputs from these circuits 48, 50, 51, 55, 56, 57, memory 59, etc. And the exhaust motor 1 through the output circuit 60 in response to a command from the control microcomputer 58.
8. Start the valve motor 19 and the elevator motor 29,
And stop control, and through the output circuit 61, the fuel pump 20,
The start and stop controls of the cup motor 69 and the igniter 70 are performed, the start and stop controls of the moisture motor 30 are controlled via the output circuit 62, various items are displayed on the display unit 44 via the display output circuit 63, and the oil time output circuit 64 is controlled. Control the start and stop of the fuel valve 71 through the rotation command output circuit 65
Starting, stopping, and controlling the number of rotations of the blower motor 23 through the rotation pulse input circuit 66, output to the serial data transmission circuit 67, output to the nonvolatile memory 68,
In addition, the configuration is such that the data is input from the nonvolatile memory 68 to the memory 59.

The control of the reserved drying is performed as shown in FIG. The operation will be described with reference to the flowchart of FIG. 1. The drying operation of the grain is started (step 101), and whether the starting means 31 for starting the drying operation is detected to be ON (step 102), and if NO is detected, step 1 is performed.
Return to 02. If YES is detected, the operation start output processing of the dryer 1 is performed (step 103), and it is detected whether the timer of the operating device 14 is set to ON by operating the timer setting means 40 of the operating device 14 (step 10).
4) If YES is detected, the timer is subjected to a subtraction process (step 105), and it is detected whether or not the set time of the timer of the operating device 14 is 0 hours (step 10).
6) If NO is detected, the timer contact input of the timer reservation unit 46 is read (step 107), and if NO is detected in step 104, the process proceeds to step 107. It is detected whether the contact input has changed from OFF to ON (step 108), and if NO is detected, step 10
Return to 4. If YES is detected, the dryer 1 is shifted to a resting step (step 109), and the timer contact input of the timer reservation unit 46 is read (step 11).
0), it is detected whether the contact input has changed from ON to OFF (step 111), and if NO is detected, step 11 is performed.
Return to 0. If YES is detected, the dryer 1 is shifted to the re-drying operation (step 112), the timer is subjected to a subtraction process (step 113), and the time set by the timer of the operation device 14 ends and 0 hours Is detected (step 114), and if NO is detected, the process returns to step 113. If YES is detected, the dryer 1 is subjected to an operation stop processing (Step 115), and if YES is detected in Step 106, the process proceeds to Step 115. Reading of the timer contact input of the timer reservation unit is prohibited (canceled) (step 116), and the process returns (step 1).
17).

FIG. 8 is a diagram showing the control of reserved drying.
The kernel drying operation is started (step 201), and the process proceeds to step 202, where steps 202 to 206 are performed.
Is controlled as shown, the time count is started (step 207), the timer contact input of the timer reservation unit 46 is read (step 208), and it is detected whether the contact input has changed from ON to OFF (step 20).
9) If YES is detected, the time counting is stopped (step 210), the count time is compared with the data stored and set (step 211), and the size is detected from the stored data (step 212), If YES is detected, the count time is written to the non-volatile memory 68 (step 213), and the dryer 1 is restarted (step 214). If NO is detected in step 209, the count time and the stored data + constant The time is compared (step 215), and it is detected whether it is longer than the count time (step 216).
Return to 08. If YES is detected, the process proceeds to step 214. If NO is detected in step 212, step 21 is executed.
Proceed to 4. Proceeding from step 214 to step 217,
Steps 217 to 220 are controlled as shown.

As described above, the abnormality of the timer reservation unit 46 can be detected, and the re-drying can be performed when the abnormality occurs and the re-drying signal is not input. The same effect can be obtained even when the setting of re-drying is forgotten. 9 to 12 are views showing the operation device 72 and various displays.

The operation device 72 has a box shape, and has a display section 73 for displaying various items in, for example, a liquid crystal format on a surface plate of the box body. ON with multiple pushbuttons to set various functions
Function setting means 74, 75, 76, 7 of the OFF switch
7 and a stop means 78 for performing a stop operation, and various functions set by operation of these function setting means 74, 75, 76, 77 are displayed on the display unit 73.

The function displays of these function setting means 74, 75, 76, 77 before the start of each of the work of inlaying, drying, discharging, and ventilation are shown as "stretching, drying, discharging, and ventilation" as shown in FIG. It is displayed on the unit 73. These function setting means 74, 7 for setting the grain type, the drying mode, etc.
The function displays 5, 76 and 77 are displayed on the display unit 73 as grain mode, change, and return, as shown in FIG.

The control device 79 is provided in the operation device 72,
Detection input of paddy flow sensor 80, input of digital information, function setting means 74, 75, 76, 77, and stopping means 7
8, a digital input circuit 81 for inputting the operation of the analog sensor information, an analog input circuit 8 for inputting detection values detected by the moisture sensor 2 and the hot air temperature sensor 52.
2, A / D conversion circuit 83, serial data receiving circuit 8
4. Digital input circuit 8 to which memory clear 85 is input
6. A control microcomputer 87 for performing arithmetic and logical operations and comparison operations on the inputs from the circuits 81, 82, 83, 84 and 86, a memory 88, and an output circuit 89 in accordance with instructions from the control microcomputer 87. Start and stop control of the blower motor 18 via the output circuit 90, and start and stop control of the valve motor 19 and the grain raising motor 29 via the output circuit 90;
The fuel valve 71 and the fuel pump 2 via the output circuit 91
0, start, stop and adjust control, start, stop and adjust the blower motor 23 via the output circuit 92, start and stop the moisture motor 30 via the output circuit 93,
Various items are displayed and controlled on the display unit 73 via the display circuit 94, and the serial data transmission circuit 95 and the nonvolatile memory 9 are controlled.
6 and the like.

FIG. 13 is a diagram showing the control of reserved drying in which both the initial drying time and the pause time are set and reserved drying is performed. Grain drying operation is started (step 30).
1) The setting of the initial drying time is read and determined (step 302), the initial drying time is written into the memory 88 (step 303), and the setting of the pause time is read and determined (step 304). The pause time is written into the memory 88 (step 305), the pause time is written into the non-volatile memory 96 (step 306), and the process proceeds to step 307, where steps 307 to 312 are controlled as shown.

As described above, it is not necessary to set the pause time every time the reserved drying is performed, and the operation is simplified. (The main purpose of scheduled drying is to stop nighttime operation, and the time to stop is the same every day.) The initial drying time differs depending on the ignition time, so the setting is best each time. FIG. 14 is a diagram showing the control of reserved drying in which both the initial drying time and the pause time are set and reserved drying is performed.

The drying operation of the grain is started (Step 401), and the process proceeds to Step 402. Steps 402 to 406 are controlled as shown in the figure, and Step 406 is performed.
If YES is detected in step, the reserved drying is displayed (step 407), and the reserved drying operation is performed (step 408).
If NO is detected in Step 406, a setting confirmation screen is displayed (Step 409), and it is detected whether the stopping means 78 is ON (Step 410), and Step 4 in which NO is detected
Return to 09. If YES is detected, the process returns to step 402.

If NO is detected in step 404, a normal dry display is made (as shown in FIG. 10) (step 411).
A normal drying operation process is performed (step 412), and the process returns (step 413). Due to the above, the initial drying time alone causes re-drying immediately, or the pause time alone causes inconvenience such as starting from the beginning,
These problems can be solved, and the above-mentioned control can also solve the above-mentioned problem caused by an operation error.

FIG. 15 is a diagram showing the control of reserved drying in the configuration of FIGS. The kernel drying operation is started (step 501), and the process proceeds to step 502, where step 502 is controlled as shown in the drawing to detect whether the contact input has changed from ON to OFF (FIG. 3A) (step 503). If YES is detected, it is detected whether drying is in progress (step 504), and if YES is detected, the operation is shifted to the stop process (step 505), and the process returns to step 502.
If NO is detected in step 503, it is detected whether the contact input has changed from ON to OFF (FIG. 3 (B)) (step 506), and if YES, it is detected whether the contact is inactive (step 507), and YES Is detected, the operation is shifted to the re-drying process (step 508), and the process proceeds to step 509, where steps 509 to 510 are controlled as shown.

If NO is detected in step 504, the process proceeds to step 510. If NO is detected in step 506, the process proceeds to step 509. If NO is detected in step 507, the process proceeds to step 510. As described above, when there is an erroneous setting or erroneous operation of the timer reservation unit 46 during a normal stop (standby), if the reading of the contacts is always performed, there is a possibility that a problem of suddenly entering the drying operation may occur. However, this can be solved.

FIG. 16 is a diagram showing the control of reserved drying in the configuration of FIGS. The operation of drying the grain is started (step 601), and the process proceeds to step 602, where steps 602 to 606 are controlled as shown in FIG.
The timer contact input of the timer reservation unit 46 is read (step 607), and it is detected whether the contact input has changed from ON to OFF (step 608). If NO is detected, the process returns to step 604. If YES is detected, the process shifts to a pause process (step 609), and the remaining time is stored in the memory 59.
(FIG. 3A) (step 610), the timer contact input of the timer reservation unit 46 is read (step 611), and it is detected whether the contact input has changed from ON to OFF (step 612). If detected, the process returns to step 611. If YES is detected, the dryer 1 is shifted to the re-drying operation (step 613), the remaining time in the memory 59 is set as the drying time (step 614), the process proceeds to step 615, and the steps 615 to 619 are performed. It is controlled as shown.

As described above, the reservation operation by the timer reservation unit 46 and the operation time setting of the operation device 14 can be used in parallel, which is convenient. FIG. 17 is a diagram showing the control of reserved drying in the configurations of FIGS. Grain drying operation is started (step 701), and step 702 is performed.
Steps 702 to 705 are controlled as shown, and it is detected whether the grain moisture detected by the moisture sensor 2 is equal to or less than the finish target moisture set by operating the moisture setting means 33 (step 706), and YES Is detected, the stopped moisture is displayed (step 707), and the dryer 1
Operation stop processing is performed (step 708), reading of the timer contact input of the timer reservation unit 46 is prohibited (step 709), and if NO is detected in step 706, the timer contact input of the timer reservation unit 46 is read (step 710). It is detected whether the contact input has changed from OFF to ON (Step 711). If NO is detected, the process proceeds to Step 712. Step 712 is controlled as shown, and if YES is detected in Step 711, the pause process is performed. (Step 713), the timer contact input of the timer reservation unit 46 is read (step 714), it is detected whether the contact input has changed from OFF to ON (step 715), and if NO is detected, the process proceeds to step 714. Return. If YES is detected, the dryer 1 is shifted to a re-drying operation (step 716), and step 717 is performed.
Then, steps 717 to 720 are controlled as shown.

Step 709 proceeds to step 720.
As described above, even when the timer operation is performed by the timer reservation unit 46, the water stop by the moisture sensor 2 is prioritized to prevent the grain from being excessively dried. FIG. 18 and FIG.
FIG. 8 is a diagram illustrating correction control of a scheduled drying time in the configurations of FIGS. 4 to 7.

The operation of drying the kernel is started (Step 801), and the process proceeds to Step 802. Steps 802 to 806 are controlled and the estimated drying time is calculated as shown in the drawing (estimated drying time (T) = detected kernel). Moisture value (MS)
-Stopped moisture value (ML) x set constant (K)) (step 807), detected grain moisture value (MS) ≤ fixed moisture value (MO) set and stored in the controller 47 of the operating device 14
Is detected (step 808), and if YES is detected, the drying loss rate k is calculated from the previously measured moisture data and the presently measured moisture data (step 809), and the expected drying time is corrected (corrected expected drying time ( T ′) = expected drying time (T) × constant (K ′) determined from drying loss k (step 810), the corrected expected drying time is displayed (step 811), and NO is detected in step 808. Then, the process proceeds to step 811. Proceeding to step 812, steps 812 to 815 are controlled as shown.

As described above, the accuracy of the expected drying time to be calculated is improved by detecting and correcting the actual drying loss rate based on the amount of change in the measured moisture as well as the fixed drying loss rate setting value. Can be. 20 and 21 are diagrams showing the correction control of the scheduled drying time in the configurations of FIGS.

The grain drying operation is started (step 901), and the process proceeds to step 902. Steps 902 to 908 are controlled as shown to calculate the expected drying time (estimated drying time (T) = detected kernel). Moisture value (MS)
-Stop set moisture value (ML) x set constant (K)) (Step 909), Detected grain moisture value (MS) ≤ Constant moisture value (MO) set and stored in the controller 47 of the operating device 14
Is detected (step 910), and if YES is detected, a correction constant (K ') is determined according to the number of high moisture grains (step 911), and the expected drying time is corrected (the corrected expected drying time ( T ′) = expected drying time (T) × correction constant (K ′)) (step 912), and the corrected expected drying time is displayed (step 913).
If O is detected, the process proceeds to step 913. Step 91
The process proceeds from step 3 to step 914, and steps 914 to 917 are controlled as shown.

As described above, when drying with a large amount of high-moisture grains, the error in the scheduled time can be reduced by correcting the scheduled drying time to be longer.

[Brief description of the drawings]

FIG. 1 is a flowchart.

FIG. 2 is an enlarged front view of a main part.

FIG. 3 is a time chart.

FIG. 4 is a block diagram.

FIG. 5 is a partially broken whole side view of the grain dryer.

FIG. 6 is an enlarged sectional view taken along line AA of FIG. 5;

FIG. 7 is an enlarged front view of the operating device, which can be partially broken.

FIG. 8 is a flow chart showing another embodiment.

FIG. 9 is a view showing another embodiment, and is an enlarged front view of the operating device, which can be partially broken.

FIG. 10 is a view showing another embodiment, and is an enlarged front view of an operation display of the operation device.

FIG. 11 is a view showing another embodiment, and is an enlarged front view of an operation display of the operation device.

FIG. 12 is a block diagram showing another embodiment.

FIG. 13 is a flow chart showing another embodiment.

FIG. 14 is a flow chart showing another embodiment.

FIG. 15 is a flow chart showing another embodiment.

FIG. 16 is a flow chart showing another embodiment.

FIG. 17 is a flow chart showing another embodiment.

FIG. 18 is a flow chart showing another embodiment.

FIG. 19 is a view showing another example, and is a diagram showing a relationship between a grain moisture value and a drying time.

FIG. 20 is a flow chart showing another embodiment.

FIG. 21 is a diagram showing another example, and is a diagram showing the relationship between the number of grains and the grain moisture value.

[Explanation of symbols]

 14 Operating device 31 Each starting means 32 Stopping means 40 Timer setting means 46 Timer reservation unit 47 Control device

Claims (1)

[Claims] 1. A timer setting means 40 for setting a drying time for drying a grain, a starting means 31 for operating each work such as setting, drying and discharging of the grain at the start and a stop for operating at a stop. In the operating device 14 provided with the means 32 and the like, and in the grain dryer in which the drying start time reserved and set by the operation of the timer reservation unit 46 is input to the operating device 14, the drying start time is set by the operation of the timer setting means 40. During the drying time or when the drying time has expired, a control device 47 for canceling the drying start time reserved and set by the operation of the timer reservation unit 46 is provided. Control device.