JPH05196359A - Grain feedout control for grain drier - Google Patents

Abstract

PURPOSE:To realize rationalization of the management of machine type by a method wherein a feedout valve which feeds out grains in a stream is con trolled to rotate intermittently based on a duty ratio which is set according to the machine type and the frequency of 50 or 60Hz. CONSTITUTION:When a start switch 38 is turned ON, an input is provided to a CPU 50. If the CPU 50 detects, based on the input, that a drying operation is selected and the frequency is 60 Hz, an on-time constant classified by frequency which sets an on-time for a rotation time of a valve motor 19 is selected. On the other hand, if it is detected that the frequency is 50Hz, another on-time constant is selected. Further, a machine type setting knob 43 is operated to provide an input into the CPU 50. The CPU 50 detects based on the input that the machine type is small, middle or large. If it is detected that the machine type is small, an on-time constant classified by machine type which sets the on-time for the rotation time of the valve motor 19 is selected. On the other hand, if it is detected ' that the machine type is middle or large, another on-time constant is selected correspondingly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain feeding control system for a grain dryer.

[0002]

2. Description of the Related Art Conventionally, while the grains stored in the upper grain storage chamber are fed down from this storage chamber to the lower grain drying chamber by the rotation drive of a feeding valve, hot air flows into the drying chamber. Grains that are ventilated and are flowing down the drying chamber are exposed to the hot air and dried. At the time of this drying work, a valve is provided to secure a predetermined amount of fed-out grains depending on the type of grain dryer and the frequency of 50 and 60 cycles of the power source, which are set by the throughput of the dried grains. The rotation control of the feeding valve, which is rotationally driven from the motor through the speed change mechanism, is performed by recombining the pulley of the valve motor and the speed change mechanism and the sprocket of the speed change mechanism and the speed feed valve to secure a predetermined amount of the fed grain. It was a control method.

[0003]

[Problems to be Solved by the Invention] The type of grain dryer and the power source set by the throughput of the grain to be dried, etc.
The grains stored in the grain storage chamber of the dryer in which the pulleys of the valve motor and the speed change mechanism and the sprockets of the speed change mechanism and the feeding valve are recombined according to the frequency of 0, 60 cycles are stored in this storage. While the grain drying chamber is being driven by the rotary drive of the feeding valve to be flowed down, the hot air passes through the drying chamber so that the grains flowing down in the drying chamber are
It is exposed to this hot air and dried.

At the time of this drying operation, the pulleys and the sprockets are not recombined depending on the model and the frequency, so that the model management can be rationalized and the cost can be reduced. Is.

[0005]

According to the present invention, hot air is blown down from the upper grain storage chamber 1 to the lower grain drying chamber 2 by rotationally driving a feeding valve 3 while the hot air is blown down.
In a grain dryer provided to ventilate and dry the air, the feeding valve 3 is used depending on the type of the dryer set according to the amount of grain to be dried and the like, and 50 and 60 cycles of power supply. In order to secure a predetermined amount of fed grains to be fed down, the feeding valve 3 is controlled to rotate intermittently by the rotation driving means at a duty ratio set for each model and each of the 50 and 60 cycles, and the grains are fed down. The configuration of a grain feeding control method is characterized in that

[0006]

The grain stored in the grain storage chamber 1 of the grain dryer is fed from the storage chamber into the grain drying chamber 2 by the rotation drive of the feeding valve 3 while the hot air is blown down. By passing through the drying chamber 2, the grains flowing down in the drying chamber 2 are exposed to the hot air and dried.

At the time of this drying operation, the
The feeding valve 3 is intermittently rotationally driven and controlled at a duty ratio set for each frequency of 60 cycles, and the feeding grain amount fed and flowed down by the feeding valve 3 is dried while a predetermined amount is fed.

[0008]

EFFECTS OF THE INVENTION According to the present invention, 50, 60
By the duty ratio set for each cycle frequency,
By controlling the feeding valve 3 for feeding and flowing down the grains intermittently, it is not necessary to recompose the pulley and the sprocket depending on the type and the frequency, so that the model management can be rationalized and the excess It is not necessary to prepare a pulley or the sprocket, and the cost can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The illustrated example is a circulation type grain dryer 4 for drying grains.
It shows a state in which a moisture sensor 5 for detecting moisture in the grain, a burner 6 for generating hot air, and the like are attached. The dryer 4 has a rectangular shape that is long in the front-rear direction, and is formed on the upper part of the machine wall 7.
A transfer gutter 8 in which a transfer spiral is rotatably installed and a ceiling plate 9 are provided, and a grain storage chamber 1 for storing grains is formed below the ceiling plate 9, and inside the storage chamber 1. A full sensor is provided.

Below the storage chamber 1, the grain drying chambers 2 and 2 are provided with exhaust chambers 10 on both the left and right sides and a blower chamber 11 at the center.
And a blowing valve 3 for feeding and lowering grains is rotatably supported in the lower part of the drying chamber 2, and an exhaust temperature sensor is provided in the exhaust chamber 10. A hot air temperature sensor is provided in the blower chamber 11. Grain trough 12
Is rotatably supported by a transfer spiral and is provided below the drying chambers 2 and 2 for communication.

The burner 6 is provided inside the burner case 13, and the burner case 13 is provided on the outer surface of the machine wall 7 on the front side of the machine wall 7 so as to correspond to the inlet side of the blower chamber 11. There is a wind pressure sensor in the burner case 13, and an operating device 14 for starting and stopping the burner 6, the moisture sensor 5 and the dryer 4 for each operation of loading, drying and discharging is provided on the front side. It is detachably attached to the machine wall 7.

The exhaust fan 15 is provided on the rear side of the machine wall 7 in the central rear side exhaust cylinder 17 of the exhaust passage chamber 16 provided to communicate with the left and right exhaust chambers 10, 10. On the side machine wall 7, a fan motor 1 for rotating and driving the fan 15 is provided.
8 is provided. Reference numeral 19 denotes a valve motor, which has a structure in which a belt 23 is stretched over a pulley 20 provided in the valve motor 19 and a pulley 22 provided in a speed change mechanism 21, and the sprocket 24 provided in the speed change mechanism 21 and the aforementioned Sprocket 25,2 provided at the rear end of the feeding valve 3,3
5 is provided with a chain 26, and the delivery valves 3 and 3 are configured to be driven intermittently or continuously depending on work.

A fuel pump 27 having a fuel valve is provided on the outside of the lower plate of the burner case 13. By opening and closing the fuel valve, the fuel pump 27 sucks the fuel in the fuel tank 28 and supplies it to the burner 6. It is a configuration that does.
The blower 29 is provided on the outer side of the upper plate, and is configured to be rotationally driven at a variable speed by a blower motor 30 for speed change. The blower 29 blows combustion air corresponding to the supplied fuel amount to the burner 6.

The diffusion plate 31 is provided at the center of the bottom plate of the transfer gutter 8 in the front-rear direction and is provided on the lower surface of the supply port for supplying the transfer grains to the storage chamber 1, and the grains are evenly diffused into the storage chamber 1. It is configured to give back. The grain-sustaining machine 32 is provided outside the front side of the machine wall 7 and has a belt with a bucket conveyor 33 stretched inside. The upper end of the grain-raising machine 32 forms a throw-out tube 34 between the transfer gutter 8 and the starting end. A supply gutter 35 is provided between the lower end portion and the terminal end portion of the grain collecting gutter 12 so as to communicate with each other, and a paddy flow sensor is provided in the discharging cylinder 34.

Reference numeral 36 is a grain elevator motor, which is configured to rotate and drive the belt with the bucket conveyor 33, the transfer spiral in the transfer gutter 8, the diffusion plate 31 and the transfer spiral in the grain collecting gutter 12 and the like. There is. The moisture sensor 5 is provided substantially vertically in the center of the grain raising machine 32. The moisture sensor 5 is rotated by the moisture motor 37 when an electric measurement signal is transmitted from the operating device 14. Each part of 5 is rotationally driven, receives the grain that is falling while being conveyed to the upper portion by the bucket conveyor 33, and while crushing the grain by pressure, the moisture content of the crushed grain is detected.

The operating device 14 has a box shape, and the dryer 4, the moisture sensor 5, the burner 6 and the like are put on the surface plate of the box body, and the operation is started for each operation of drying and discharging. Start switch 38, stop switch 3 for stopping operation
9. Moisture setting scoop 40 for setting finishing target moisture of grain by operation position, Grain type setting scoop 41 and sticking amount setting scoop 42 for setting hot air temperature generated from the burner 6 by operation position, large size A model setting table 43 for setting the medium and small models, a display section 44 for digitally displaying various display items, an abnormality monitor lamp and a monitor display are provided.

The control device 45 is provided in the operating device 14, and the detection values detected by the moisture sensor 5 and the exhaust air temperature sensor and the hot air temperature sensor are input to the input circuit 46 via the AD circuit 47. The operation of each of the switches 38 and 39 and the operation of each of the setting knobs 40, 41, 42 and 43 are input to the input circuit 46, and the power source is input to the input circuit 46 via the power supply circuit 48. Input from the power supply circuit 48 to the input water channel 46 via the frequency identification circuit 49, and input to the CPU 50 that performs arithmetic logic operation and comparison operation on these inputs from the input circuit 46, and also via the output circuit 51 in this CPU 50. Each of the motors 18, 19, 30, 3
6, 37, the fuel valve, the fuel pump 27 and the like are started, stopped and controlled, and the abnormality monitor lamp is turned on and displayed on the display unit 44. Each of the setting knobs 40, 41, 42, 43 is of a rotary switch type, and is configured such that predetermined numerical values and types are set depending on the operation position.

The rotation drive control and stop control of the feeding valves 3 and 3 at the time of the grain loading work, the grain drying work and the grain discharging work by the control device 45 are performed as follows. 2 and 3, the start switch 38 for starting the stake-in operation is operated to be input to the CPU 50, and this input rotates the delivery valves 3 and 3 during the stake-in operation. The valve motor 19 is stop-controlled, and the delivery valves 3 and 3 are not rotationally driven.

At the time of discharging work, as shown in FIG. 2 and FIG.
The start switch 38 for starting the discharging operation is operated and input to the CPU 50, and the valve motor 19 that rotationally drives the delivery valves 3 and 3 by this input.
Is continuously controlled, and the feeding valves 3 and 3 are continuously driven to rotate so that the grains are continuously fed and flowed down from the drying chambers 2 and 2.

During the drying operation, as shown in FIGS.
The start switch 38 for starting the drying operation is operated and input to the CPU 50, and it is detected by this input whether or not it is the drying operation (step 101), and the frequency is detected by the frequency identifying circuit 49 (step 10).
2) When it is detected as 60 HZ, the on-time constant (F) for each frequency that sets the on-time (TA) of the valve motor 19 rotation time is selected to be 0.8, for example (step 103). When it is detected that the frequency is 50 HZ, 1 is selected as the on-time constant (F) for each frequency for setting the on-time (TA) of the valve motor 19 (step 104).

The model setting knob 43 is operated and input to the CPU 50. By this input, the model is small,
Whether the size is medium or large is detected (step 105),
When it is detected that the size is small, the on-time constant (TS) for each model that sets the on-time (TA) of the rotation time of the valve motor 19 is selected (step 106), and when it is detected that the size is medium, An on-time constant (TM) for each model for setting the on-time (TA) of the valve motor 19 is selected (step 107), and when it is detected to be large, the on-time (TA) of the valve motor 19 is selected. The on-time constant (TL) for each model is set (step 108), and the on-time (TA) of the valve motor 19 rotation time is determined by both the frequency and the model.
The duty ratios of both the rotation stop time and the off time (TB) of the rotation stop time are selected (step 109).

The output of the valve motor 19 is turned on (step 110), and it is detected whether the on-time (TA) has elapsed (step 111). If NO is detected, the process returns to step 110 and YES is detected. Then, the output of the valve motor 19 is turned off (step 11
2) It is detected whether the off-time (TB) has elapsed (step 113), and if NO is detected (step 11).
Returning to 2), if YES is detected (step 110)
Returning to, the duty ratio between the on-time (TA) of the rotation time of the valve motor 19 and the off-time (TB) of the rotation stop time is controlled according to the frequency and the model,
The feeding valves 3 and 3 are rotationally controlled and stopped so that the grains are fed from the drying chambers 2 and 2 or the feeding is stopped.

In addition, the control device 45 has the following functions. When the moisture sensor 5 detects the same grain moisture as the finishing target moisture set by operating the moisture setting scoop 40, it is determined that the drying of the grain has ended, the dryer 4 is automatically stopped, and the grain It is configured to stop drying. Less than,
The operation of the above embodiment will be described.

Setting knobs 40, 41, 4 of the operating device 14
2 and 43 are operated to predetermined positions and the start switch 38 for starting the drying operation is operated to start each part of the grain dryer 4, the burner 6, the moisture sensor 5 and the like, and hot air is generated from the burner 6. Then, the hot air passes through the grain drying chamber 2 from the air blowing chamber 11, passes through the air exhaust chamber 10 and the air exhaust passage chamber 16, and is sucked and exhausted by the air exhaust unit 15. The grains stored in the grain storage chamber 1 are exposed to the hot air while being dried down from the storage chamber 1 in the drying chamber 2 and dried, and are fed downward by the feeding valve 3 and flowed down. From the grain collecting gutter 12 through the supply gutter 35, the grain raising machine 3
2 is transferred and supplied by the lower transfer spiral to the upper part by the bucket conveyor 33 and is supplied into the transfer gutter 8 through the ejection cylinder 34, and is transferred from the transfer gutter 8 onto the diffusion plate 31 by the upper transfer spiral. It is transferred and supplied, and is uniformly diffused and reduced into the storage chamber 1 by the diffusion plate 31, and is circulated and dried.

The grain moisture detected by the moisture sensor 5 is
When the same grain moisture as the finishing target moisture set by operating the moisture setting knob 40 is detected, it is detected that the drying is completed, and the controller 45 automatically controls and the dryer 4 is automatically stopped, and the grain is dried. Grain drying is stopped. At the time of this drying operation, the valve motor 19 rotations for rotating and driving the delivery valve 3 according to the model type set by operating the model setting knob 43 and the frequency of the power source detected by the frequency identification circuit 49. The duty ratio between the on-time (TA) of time and the off-time (TB) of rotation stop time is selected, and the selected on-time (TA) and off-time (TB) are selected.
The feeding valve 3 is driven to rotate intermittently, and the grains are dried while being intermittently fed.

In addition, during the staking operation, the feeding valve 3 is controlled to a stopped state, and the staking operation of the grain is performed. At the time of discharging work, the feeding valve 3 is controlled to be continuously rotated, and discharging work of dried grains is performed. In the above-described embodiment, the difference in the model is selected and operated by using the model setting selector 43. However, a model identification port may be provided in the connection connector of the motor, which is different for each model, so that the CPU 50 can automatically control. ..

[Brief description of drawings]

 The figure shows an embodiment of the invention.

FIG. 1 is a flowchart.

FIG. 2 is a diagram showing the relationship between the type and frequency and rotation of the delivery valve.

FIG. 3 is a time chart of a delivery valve.

FIG. 4 is a block diagram.

FIG. 5 is an overall side view in which a grain dryer is partially broken.

FIG. 6 is a rear view of a part of the grain dryer.

7 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 8 is an enlarged front view in which a part of the grain dryer is partially broken.

[Explanation of symbols]

 1 Grain storage chamber 2 Grain drying chamber 3 Feeding valve

Front page continuation (72) Inventor Hitoshi Ueji, 1 Yakura, Tobe Town, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A hot air flow is provided in the drying chamber 2 for drying while allowing the grains to be drawn out and flow down from the upper grain storage chamber 1 to the lower grain drying chamber 2 by the rotation drive of a feeding valve 3. In the grain dryer, depending on the size of the dryer, which is set according to the amount of processed grain to be dried, and the like,
In order to secure a predetermined amount of feed grain to be fed down by the feed valve 3 by 0, 60 cycles, the feed valve 3 is rotated by a rotation driving means at a duty ratio set for each model and for each 50, 60 cycles. A grain feeding control system characterized by feeding grains downward by controlling intermittent rotation.