JPH11218382A - Operation judging and controlling device for grain drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the reliability and stability of work by a method wherein operation is decided as ventilating and drying operation when the value of load current of a transfer motor is not increased after elapsing a predetermined period of time after the ON operation of an operation starting means and the operation is switched into the ventilating and drying operation, in which grain is delivered from a grain drying chamber through a delivery valve to ventilate and dry the grain. SOLUTION: A grain drier, capable of effecting charging operation, charging grain into a grain reserving chamber 7, and ventilating and drying operation, ventilating outdoor air into a grain drying chamber 8 to dry the same, is equipped with a transfer motor 29, driving the rotation of a transfer screw 5 for transferring the grain, a valve motor 19, driving the rotation of a delivery valve, and the like. In this case, the value of load current of the transfer motor 29 is detected when a predetermined period of time has elapsed after starting operation and the detected value of load current is judged that the same is not increased, the operation is decided as ventilating and drying operation. When the operation is decided as the ventilating and drying operation, the valve motor 19 is controlled through ON control by a control device to open the delivery valve and the ventilating and drying operation, in which the grain is delivered out of the drying chamber 8 and is circulated, is started.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a penetration operation in which grains are introduced into a grain storage chamber by turning on an operation start means, and a ventilation drying operation in which outside air is passed through a grain drying chamber to dry. Starts for a predetermined time (T) after the operation start means is turned on.
If the load current value of the transfer motor that rotationally drives each of the transfer spirals for transferring the grain does not increase even after the lapse of time, it is determined that the ventilation drying operation is performed, and the delivery valve that delivers the grain from the drying chamber. The present invention relates to an operation discrimination control device that controls a control device to switch to a ventilation drying operation of turning on a valve motor that rotationally drives the hopper and feeding the grains from the drying chamber with the delivery valve to perform ventilation drying.

[0002]

2. Description of the Related Art A penetration operation in which grains are loaded into a grain storage room,
When starting the ventilation drying operation by passing the outside air to the drying chamber while feeding and circulating the grains, the outside air is cross-ventilated by rotating the delivery valve from the storage chamber to the grain drying chamber from the storage chamber. The operation start means is turned ON to start these two work operations.

[0003]

Since the start of both the staking operation and the ventilation drying operation can be started by turning on the operation start means, the staking operation and the ventilation drying operation cannot be distinguished. If the delivery valve is rotating during the set-in operation, the kernels are set in while the grains are circulating, and this requires a long time for setting. The present invention is intended to solve this problem.

[0004]

For this purpose, the present invention provides a grain storage chamber 7 for receiving and storing grains, and a payout for feeding grains from a grain drying chamber 8 for drying grains. Valve 1
1, an operation manual means 31 for starting both a squeezing operation for squeezing grains into the grain storage chamber 7 and a ventilation drying operation for sieving the outside air to the grain drying chamber 8 for drying. A transfer motor 29 for rotating and driving each of the transfer spirals 5 and 12 for transferring the grains.
And a valve motor 19 for driving the delivery valve 11 to rotate.
When the load current value of the transfer motor 29 does not increase even after a lapse of a predetermined time (T) after the ON operation of the operation start means 31 in the grain dryer provided with A grain drying machine provided with a control device 40 for controlling the motor 19 to be turned on to switch over the ventilation drying operation in which the grains are drawn out from the grain drying chamber 8 by the delivery valve 11 and are dried by ventilation. Of the operation discrimination control device.

[0005]

According to the present invention, the grain is inserted into the grain storage chamber 7 by a plugging operation, and the loaded kernel is moved from the storage chamber 7 to the grain drying chamber 8 by rotating a valve 11 to drive the kernel. When the ventilation drying operation is started by passing the outside air across the drying chamber 8 while feeding and circulating, the operation start means 31 is turned ON to start both of these operation operations.

After the operation start means 31 is turned on,
If the load current value of the transfer motor 29 for rotating and driving each of the transfer spirals 5 and 12 for transferring the grains does not increase even after the lapse of the predetermined time (T), it is determined that the drying operation is the ventilation drying operation, The valve motor 19 for rotating and driving the delivery valve 11 for delivering and circulating the grains is ON-controlled by the control device 40, and is switched to the ventilation drying operation to perform the ventilation drying of the grains.

[0007]

[Effect of the Invention] In the squeezing operation, compared with the ventilation drying operation,
The transfer amount of the grains increases, and therefore, the load current value of the transfer motor 29 that rotates the transfer spirals 5, 12 and the like for transferring the grains increases. By utilizing this fact, when the load current value does not increase even after the lapse of the predetermined time (T), it is determined that the ventilation drying operation is performed, and the delivery valve 11 for delivering the grain from the grain drying chamber 8 is rotationally driven. By controlling the valve motor 19 to be turned on, the delivery valve 19 is not driven to rotate during the extension operation, and the extension is not required to take a long time. In addition, the automatic switching control to an appropriate operation state according to each operation stabilizes each operation state.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The figure shows a state in which a moisture sensor 2 for detecting moisture in grains, a burner 3 for generating hot air, and the like are mounted on a circulation type grain dryer 1 for drying grains. The dryer 1 is provided with an upper transfer gutter 5a in which a transfer spiral 5 is rotatably mounted and a ceiling plate 6 above the machine wall 4 in a rectangular shape long in the front-rear direction, and a grain below the ceiling plate 6. A grain storage chamber 7 for storing grains is formed.

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 the drying chambers 8, 8, The feed valves 11 for feeding and flowing down the grains are rotatably supported on respective shafts. The grain collecting gutter 12a rotatably supports the transfer spiral 12 and is provided below each of the drying chambers 8, 8 to communicate with each other.

The burner 3 is provided inside a burner case 13, and the burner case 13 is detachably attached to an outer surface of the front machine wall 4 in front of the front machine wall 4 so as to correspond to an 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 configured to be freely provided.

An exhaust fan 15 is provided in a rear exhaust wall 17 at the center rear side of an exhaust passage chamber case 16 provided on the rear wall 4 so as to communicate with the left and right exhaust chambers 9 and 9. The wind tunnel 17 is provided with a blower motor 18 for driving the blower 15 to rotate. The valve motor 19 includes the delivery valve 1
1, 11 are driven to rotate via a speed reduction mechanism.

The fuel pump 20 has a fuel valve,
The fuel pump 20 sucks the fuel in the fuel tank 21 and supplies the fuel to the burner 3 by opening and closing the fuel valve. 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 by the blower 22. Burner 3
The hot air generated from the air 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 upper transfer gutter 5a, below the supply port for supplying the transported grains to the storage chamber 7, and the grains are uniformly diffused and reduced to the storage chamber 7. The configuration is such that 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 discharging cylinder 27 between the upper end of the upper transfer gutter 5a. Are provided for communication. The lower end is
A supply trough 28 is provided and communicated with the end of the grain collecting trough 12a, and a feeding funnel 25a for feeding grains is provided on one side of the lower part of the grain raising machine 25. An on-off switch-type paddy flow sensor 27a that turns on and off based on the presence or absence of a grain passing through the inside of the ejection tube 27 is provided in the ejection tube 27.

The transfer motor 29 is connected to the bucket conveyor 26.
Attached belt, transfer spiral 5 in upper transfer gutter 5a, diffuser 2
4, and the transport spiral 12 and the like in the grain collecting gutter 12a are rotationally driven. The moisture sensor 2 includes a grain raising machine 25
Is provided at a substantially central portion in the vertical direction. The moisture sensor 2 transmits an electrical measurement signal from the operation device 14 to rotate the moisture motor 30 to rotate and drive various parts of the moisture sensor 2. Between the electrode rolls 30a, 30a,
While compressing and pulverizing the grains one by one, for example, 32 pieces of the pulverized grains are measured three times at a time, and an average value of the three times is calculated to obtain a grain moisture value (MSN). Is detected. Whether the moisture motor 30 is rotating or not is detected by a rotation sensor 30b.

The operating device 14 has a box shape, and has a push button for starting the drying, discharging, and discharging operations by inserting a dryer 1, a moisture sensor 2, and a burner 3 on the surface plate of the box. Starting means 31, ON-OFF switch operation starting means 31, stopping means 32 for stopping operation, ignition means 33 for operating other than the operation manual means 31 at the start of drying operation, emergency stopping means 34 for operating at emergency stop, A setting amount setting means 35 for setting the setting amount of the embedding grain by operating when setting the temperature of the hot air generated from the burner 3, a display lamp 35 for each stone number.
a, timer increase / decrease setting means 36, 37 for increasing or decreasing the set time of the timer, a display unit 38 for digitally displaying various display items, and a transfer motor 2 in the operation device 14.
9 is provided with a motor overload detection device 39 for detecting a load current value.

The control device 40 is provided in the operation device 14 and is a digital input circuit 40a for inputting detection of the rotation sensor 30b, detection of the paddy flow sensor 27a, digital sensor information, determination as to whether or not the water sensor 2 is provided, and the like. , Flame sensor 41
The comparison circuit 42 to which the detection of the input is input, the setting means 31 and 3
The digital input circuit 43 to which the operations of 2, 33, 34, 35, 36, and 37 are input, the detection value detected by the moisture sensor 2, the detection value detected by the motor overload detection device 39, and analog sensor information are input. Analog input circuit 4
4. A / D conversion circuit 45, electrode temperature sensor 48a, hot air temperature sensor 46, outside air temperature sensor 47, voltage conversion circuit 49 to which detection values detected by exhaust air temperature sensor 48 are input, serial data reception circuit 50, ROM 51 Is provided. Each of these circuits 40a, 42, 43, 44, 45, 49, 50,
A control microcomputer 52 for performing arithmetic logic operation, comparison operation, and the like on the input from the ROM 51;
The control microcomputer 52 is provided with an AM 53.
The start and stop of the blower motor 18 and the valve motor 19 via the output circuit 54 are controlled by the command from the
To control the start and stop of the transfer motor 29 via the output circuit 56, and to control the start, stop, and regulation of the fuel valve, the fuel pump 20, the igniter 57, and the blower motor 23 via the output circuit 56, and to control the moisture motor 30 via the output circuit 58. , Start and stop, and various items are displayed on the display unit 38 via the display circuit 59. The serial data transmission circuit 60 and the non-volatile memory 61 are provided.

The controller 40 controls the operation of inserting the grains into the storage chamber 7, or the outside air is blown into the drying chamber 8 while the grains are circulated in the drying chamber 8 for drying. The control for determining whether the circulation operation is the ventilation drying operation is performed as shown in the time chart of FIG. Even after a predetermined time (T) has elapsed after the operation start means 31 for starting these operations has been turned on, the transfer motors 2 for rotating the transfer spirals 5, 12 and the belt with the bucket conveyor 26 are rotated.
9 motor overload detection device 39 for detecting the load current value
However, when it is detected that the load current value of the transfer motor 29 does not increase, it is configured to determine the ventilation drying operation. When the increase is not detected, it is determined that the operation is the squeezing operation.

If it is determined that the ventilation drying operation is performed, the control device 40 controls the valve motor 19 for rotating the delivery valve 19 to be ON so that the ventilation drying operation for delivering and circulating the grains from the drying chamber 8 is started. Configuration.
Further, when it is determined that the operation is the extension operation, the valve motor 19
It is configured not to be ON controlled. The operation will be described with reference to the flowchart shown in FIG. 2. The drying operation is started (S-101), the operation starting means 31 is detected as ON (S-102), and if NO is determined (S-102).
Return to If determined to be YES, the transfer motor 29 is turned ON (S-103), the initial current value (IMO) of the transfer motor 29 is read (S-104), and it is detected whether a predetermined time (T) has elapsed (S-103). If (-105) is NO, the process returns to (S-104). If the determination is YES, it is determined that the measured current value (IM) has increased (S-106), and it is detected whether the measured current value (IM) has increased, for example, whether the measured current value (IM) ≧ the initial current value (IMO × 1.2). (S-107),
If NO is determined, the valve motor 19 is turned on (S-
108), and the process returns (S-109).

If (YES) is determined in (S-107), the process proceeds to (S-109). As shown in FIG. 5, the operating device 14 having only the operation starting means 31 for starting both of them without performing the distinction between the operation of the filling operation and the operation of the circulation (the ventilation drying operation and the discharging operation) without separating the operations. Dryer 1 installed
When the load current value detected by the motor overload detection value 39 that detects the load current value of the transfer motor 29 is large, the operation is determined to be the circulating operation, and when the load current value is small, the operation is determined to be the run-in operation. When the operation is determined, the valve motor 19 is controlled to be ON.

The operation will be described with reference to the flowchart shown in FIG. 7. The drying operation is started (S-201).
Proceed to (S-202) and proceed from (S-202) to (S-20).
4) is controlled as shown in the figure, and it is detected whether the detected measured value (IM) is equal to or greater than a fixed value (IK) (S-205). (S
If the determination is YES in (-205), the circulation operation (discharge operation) is determined (S-207), and the valve motor 19 is turned off.
N (S-208), (S-206), and (S
-208) proceeds to return, and is returned (S-2).
09).

Thus, the valve motor 1 for automatically driving the feed valve 11 by judging whether the operation is the extension operation or the circulation operation (discharge operation) based on the load current value of the transfer motor 29.
By performing the ON control of 9, it is possible to perform an appropriate operation according to the operation status of each work. (Ejection operation has a high load) By turning on the operation start means 31 of the operation device 14 shown in FIG. 5, the operation is started in the circulation operation (ventilation drying operation) as shown in the time chart of FIG. When the load current value increases, the motor overload detection device 3
When 9 is detected, it is determined that the run-in operation has been started,
The valve motor 19 for rotating the delivery valve 11 is turned off.
It is configured to stop the circulation operation by performing F control.

The operation will be described with reference to the flowchart shown in FIG. 9. The drying operation is started (S-301).
Proceeding to (S-302), (S-302) to (S-30)
5) is controlled as shown, and it is determined whether the detected measured value (IM) has increased (S-306), and the current measured current value (IMn) ≧ the previous measured current value (IMn−1) × 1. It is detected whether the number has increased by the comparison of 1 (S-307), and if the determination is NO, the process returns to (S-305). If the determination is YES, the valve motor 19 is turned off (S-308), and the process returns (S-309).

[0023] Thus, by automatically judging whether the operation is a squeezing operation or a ventilation drying operation, and by controlling the valve motor 19 to be ON or OFF, an appropriate operation according to the operation condition of each operation is performed. be able to. When the operation start means 31 of the operating device 14 shown in FIG. 5 is turned ON, and whether or not the timer is set within a certain period of time, it is configured to determine whether the operation is the squeezing operation or the drying operation. .

The operation will be described with reference to the flowchart shown in FIG. 10. The drying operation is started (S-40).
1), proceed to (S-402) and proceed from (S-402) to (S-402).
403) is controlled as shown in the drawing, and it is detected whether or not a certain time is set in the timer (S-404). If NO is determined, it is determined that the operation is a squeezing operation (S-405), and (S-404).
If YES is determined in S, the drying operation is determined (S-40).
6), the valve motor 19 is turned on (S-407), the outputs of the burner 3 system, the moisture sensor 2 system, the exhaust motor 18 and the like are turned on (S-408), (S-405), and (S-405). 408) proceeds to return, and is returned (S
-409).

In this manner, whether the operation is a stretching operation or a drying operation is automatically determined based on the setting state of the timer, and the valve motor 19 is controlled to be ON or OFF, so that the operation can be performed in accordance with the operation condition of each work. Appropriate driving can be performed. As shown in FIG. 11 and FIG. 12, a moisture motor 30 for rotating and driving the electrode rolls 30a of the moisture sensor 2 is provided.
Is locked and rotation stops, for a fixed time (T
If the rotation of the moisture motor 30 is still not detected by the rotation sensor 30b after the reverse rotation of 1) is performed and the rotation of the moisture motor 30 is still not detected by the rotation sensor 30b, the moisture motor 30 is locked and an abnormality has occurred in the moisture sensor 2. And the moisture sensor 2
For automatic stop control.

The control device 62 of the moisture sensor 2 and the control device 40 of the operating device 14 are connected as shown in FIG. 63 is a drive circuit, 64 is a power supply circuit, 65 is an applied voltage circuit, 66 is an electrode contact portion, 67 is a current-voltage conversion circuit, and 68 is an output circuit. Reference numeral 69 of the control device 40 indicates a power supply circuit.
The temperature near the electrode roll 30a is input to the control microcomputer of the control device 40.

The operation will be described with reference to the flowchart shown in FIG. 12. The drying operation is started (S-50).
1), proceed to (S-502) and proceed from (S-502) to (S-502).
505) is controlled as shown, and it is detected whether there is a rotation signal (S-506), and if YES is determined (S-50).
Proceeding to 7), (S-507) to (S-511) are controlled as shown, and a negative determination is made in (S-506) (S-506).
(S-512) and (S-518) are controlled as shown, and (S-511) and (S-518) are controlled.
Proceeds to return, and is returned (S-519).

Thus, when the rotation abnormality of the moisture motor 30 cannot be detected, or when the torque at the time of normal rotation is insufficient, by rotating the motor once in the reverse direction, the entrapped grains and foreign matter are caught between the electrode rolls 30a, 30a. The drying operation can be continued without performing the abnormality processing of the moisture sensor 2 immediately. Electrode roll 3 of the moisture sensor 2
When the moisture motor 30 for rotating and driving the motors 0a and 30a is locked and the rotation is stopped, the moisture voltage is checked, and when a voltage equal to or higher than a certain voltage is output from the moisture sensor 2, the moisture motor 30 is kept for a certain time. When the rotation of the moisture motor 30 is still not detected by the rotation sensor 30b, the rotation of the moisture motor 30
Is locked to detect that an abnormality has occurred in the moisture sensor 2 and to automatically stop the moisture sensor 2.

The operation will be described with reference to the flowchart shown in FIG. 13. The drying operation is started (S-60).
1), proceed to (S-602) and proceed from (S-602) to (S-602).
605) is controlled as shown, and it is detected whether there is a rotation signal (S-606), and if NO is determined (S-607).
Then, (S-607) to (S-615) are controlled as shown in the drawing, and if YES is determined in (S-606), (S-606)
(S-616) to (S-620) are controlled as shown in the drawing, and (S-615) and (S-620)
Proceeds to return, and is returned (S-621).

When the rotation of the moisture motor 30 is stopped, it is determined whether or not a moisture voltage is being output. By determining whether the stop is due to shortage, appropriate trouble processing can be performed.

[Brief description of the drawings]

FIG. 1 Time chart

FIG. 2 is a flowchart.

FIG. 3 is an overall side view of a grain dryer partially sectioned.

FIG. 4 is an enlarged sectional view taken along line AA of FIG. 3;

FIG. 5 is an enlarged front view of the operating device for partially sectioning;

FIG. 6 is a block diagram.

FIG. 7 is a flowchart showing another embodiment, and is a flowchart.

FIG. 8 is a diagram showing another embodiment, and is a time chart.

FIG. 9 is a flow chart showing another embodiment.

FIG. 10 is a flow chart showing another embodiment.

FIG. 11 is a block diagram showing another embodiment.

FIG. 12 is a diagram showing another embodiment, and is a flowchart.

FIG. 13 is a flowchart showing another embodiment, and is a flowchart.

[Explanation of symbols]

 Reference Signs List 5 transfer spiral 7 grain storage room 8 grain drying chamber 11 delivery valve 12 transfer spiral 19 valve motor 29 transfer motor 31 operation start means 40 control device (T) predetermined time

Claims (1)

[Claims] 1. A grain storage chamber 7 for receiving and storing grains, a feed valve 11 for feeding grains from a grain drying chamber 8 for drying grains, and a grain storage chamber for feeding the grains. 7, operation manual means 31 for initiating both a squeezing operation for squeezing the air into the grain drying chamber 8 and a ventilation drying operation for blowing the outside air into the grain drying chamber 8, and the transfer spirals 5, 12 for transferring the grains. In a grain dryer provided with a transfer motor 29 for driving the rotation of the feed valve 11 and a valve motor 19 for driving the delivery valve 11, the transfer is performed even after a predetermined time (T) has elapsed after the operation starting means 31 is turned on. When the load current value of the motor 29 does not increase, the ventilation drying operation is determined, the valve motor 19 is turned on, and the delivery valve 11 feeds out the grains from the grain drying chamber 8 to dry the ventilation. A control device 40 for switching control to the drying operation is provided. Operation control device for grain dryers.