JP2973672B2 - Grain dispensing control system of grain dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, grains stored in an upper grain storage chamber are fed out from this storage chamber to a lower grain drying chamber by a rotary drive of a feeding valve, and hot air is flown into the drying chamber. The grains that have been ventilated and are flowing down the drying chamber are exposed to the hot air and dried. At the time of this drying operation, a valve is provided to secure a predetermined amount of fed kernels according to the type of kernel dryer and the frequency of 50 or 60 cycles of the power supply, which are set according to the throughput of the kernels to be dried. The rotation control of the delivery valve, which is rotationally driven from the motor via the speed change mechanism, is performed by interchanging the pulleys of the valve motor and the speed change mechanism and the sprockets of the speed change mechanism and the feed valve to secure a predetermined amount of fed grains. It was a control system.

[0003]

The type and power supply of the grain dryer, which is set by the throughput of the grain to be dried, etc.
According to the frequency of 0,60 cycles, the grain contained in the grain storage chamber of the dryer, in which the pulley of the valve motor and the transmission mechanism and the sprocket of the transmission mechanism and the delivery valve are rearranged, is stored in the storage chamber. While the hot air passes through the drying chamber while being fed down from the chamber through the grain drying chamber by the rotation drive of the feeding valve, the grains flowing down 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 type and frequency of the machine, thereby trying to streamline model management and reduce costs. It is.

[0005]

SUMMARY OF THE INVENTION According to the present invention, hot air is blown from the upper grain storage chamber 1 to the lower grain drying chamber 2 while the grains are fed out and driven down by the rotation of a feeding valve 3 to the lower grain drying chamber 2.
In the grain dryer provided to be dried by ventilation, the feeding valve 3 is used depending on the type of the dryer according to the size of the dryer, which is set according to the throughput of the grain to be dried, and the number of power supply cycles of 50 and 60. The delivery valve 3 is intermittently rotationally driven and controlled by a rotary driving means at a duty ratio set for each model and for each of the 50 and 60 cycles so as to secure a predetermined amount of the delivered grain to be delivered and caused to flow the grain. And a configuration of a grain feeding control system.

[0006]

The grains accommodated in the grain storage chamber 1 of the grain dryer are fed out of the storage chamber into the grain drying chamber 2 by the rotation drive of the feed valve 3, and 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 type and 50,
The feed valve 3 is intermittently rotationally driven and controlled at a duty ratio set for each frequency of 60 cycles, and the amount of the fed kernel that is fed down by the feed valve 3 is dried while a predetermined amount is fed.

[0008]

As described above, according to the present invention, it is possible to change the type and the
By the duty ratio set for each cycle frequency,
The intermittent rotation drive control of the feed valve 3 that feeds and flows down the kernel eliminates the need to rearrange pulleys and sprockets according to the type and frequency of each type. There is no need to prepare a pulley or the sprocket, and the cost can be reduced.

[0009]

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.
1 shows a state in which a moisture sensor 5 for detecting the moisture of the grain and a burner 6 for generating hot air are mounted. The dryer 4 has a rectangular shape that is long in the front-rear direction,
A transfer gutter 8 and a ceiling plate 9 in which a transfer spiral is rotatably mounted are provided, and a grain storage chamber 1 for storing grains is formed below the ceiling plate 9. A full sensor is provided.

[0010] The grain drying chambers 2 and 2 are provided below the storage chamber 1 with air exhaust chambers 10 and 10 on the left and right sides and an air blowing chamber 11 at the center.
In the lower part of the drying chamber 2, a discharge valve 3 for discharging and flowing down the grains is rotatably supported, and the discharge chamber 10 is provided with a discharge temperature sensor. A hot air temperature sensor is provided in the blower chamber 11. Gathering gutter 12
Is rotatably supported by a transfer spiral, and provided below the drying chambers 2 and 2 for communication.

The burner 6 is provided inside a burner case 13, and the burner case 13 is provided on the outer surface of the machine wall 7 at the front side of the machine wall 7 so as to correspond to the inlet side of the blower chamber 11. A wind pressure sensor is provided 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 of the operations of inserting, drying and discharging is provided on the front side. It is provided detachably on the machine wall 7.

The air blower 15 is provided on the rear side of the wall 7 on the air discharge duct chamber 17, which is provided to communicate with the left and right air discharge chambers 10, 10 at the rear rear side of the center of the air exhaust path chamber 16. The exhaust fan motor 1 that rotationally drives the exhaust fan 15 is provided on the side wall 7.
8 are provided. Reference numeral 19 denotes a valve motor, which has a structure in which a belt 23 is stretched over a pulley 20 provided on the valve motor 19 and a pulley 22 provided on the speed change mechanism 21, and a sprocket 24 provided on the speed change mechanism 21 and Sprockets 25,2 provided at the rear end of the delivery valves 3,3
5 and a chain 26, and the feed valves 3 and 3 are driven intermittently or continuously depending on the operation.

A fuel pump 27 having a fuel valve is provided outside the lower plate of the burner case 13. By opening and closing the fuel valve, the fuel in the fuel tank 28 is sucked by the fuel pump 27 and supplied to the burner 6. It is a configuration to do.
The blower 29 is provided on the outer side of the upper plate and is driven to rotate 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 board 31 is provided at the center of the bottom of the transfer gutter 8 in the front-rear direction, below the supply port for supplying the transfer grains to the storage chamber 1, and spreads the grains uniformly into the storage chamber 1. It is configured to reduce. The grain raising 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 is provided with a discharge cylinder 34 between the transfer gutter 8 and the start end. The lower end is provided with a supply gutter 35 for communication with the end of the grain collecting gutter 12, and a paddy flow sensor is provided in the discharge cylinder 34.

Numeral 36 denotes a grain raising motor, which is configured to rotationally drive the belt with the bucket conveyor 33, the transfer spiral in the transfer gutter 8, the transfer spiral in the diffuser 31 and the grain collecting gutter 12, and the like. I have. The moisture sensor 5 is provided substantially at the center of the grain raising machine 32 in the vertical direction. The moisture sensor 5 is rotated by the transmission of an electrical measurement signal from the operating device 14 to rotate the moisture motor 37. 5 are rotatably driven to receive the grains falling while being transported to the upper portion by the bucket conveyor 33, and to detect the moisture of the crushed grains while clamping and crushing the grains.

The operating device 14 has a box shape, and the dryer 4, the moisture sensor 5, the burner 6 and the like are mounted on the surface plate of the box body, and the starting operation is performed for each of drying, discharging and discharging operations. Start switch 38, stop switch 3 for stopping operation
9. A moisture setting knob 40 for setting the finishing target moisture of the grain according to the operation position, a grain type setting knob 41 and a setting amount setting knob 42 for setting the hot air temperature generated from the burner 6 according to the operation position, , A model setting knob 43 for setting the model to medium or small, a display section 44 for digitally displaying various display items, an abnormality monitor lamp, a monitor display, and the like.

The control device 45 is provided in the operation device 14 and receives the detection values detected by the moisture sensor 5, the exhaust air temperature sensor and the hot air temperature sensor to an input circuit 46 via an AD circuit 47. The operation of the switches 38 and 39 and the operation of the setting knobs 40, 41, 42 and 43 are input to the input circuit 46, and the power is input to the input circuit 46 via the power supply circuit 48. The power is supplied from the power supply circuit 48 to the input channel 46 via the frequency discriminating circuit 49. The input from the input circuit 46 is supplied to the CPU 50 which performs arithmetic logic operation and comparison operation. 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, and 43 is of a rotary switch type, and is configured such that predetermined numerical values, types, and the like are set according to operation positions.

The rotation drive control and the stop control of the feed valves 3, 3 during the grain filling operation, the grain drying operation, and the grain discharging operation by the control device 45 are performed as follows. 2 and 3, the start switch 38 for starting the work is operated and input to the CPU 50, and the input is used to rotate the delivery valves 3 and 3. The valve motor 19 is controlled to stop, and the delivery valves 3 and 3 are not driven to rotate.

At the time of discharging work, as shown in FIGS. 2 and 3,
The start switch 38 for starting the discharge operation is operated and input to the CPU 50, and the valve motor 19 for rotating the delivery valves 3 and 3 by this input.
Is controlled to rotate continuously, and the delivery valves 3, 3 are driven to rotate continuously, so that the grains are continuously delivered and flow down through the drying chambers 2, 2.

During the drying operation, as shown in FIGS. 2 and 3,
The start switch 38 for starting the drying operation is operated and input to the CPU 50. Based on the input, it is detected whether the operation is the drying operation (step 101), and the frequency is detected by the frequency identification circuit 49 (step 10).
2) When it is detected that the frequency is 60 HZ, for example, 0.8 is selected as an on-time constant (F) for each frequency for setting the on-time (TA) of the valve motor 19 rotation time (step 103). If the frequency is detected to be 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 reduced in size.
It is detected whether it is medium or large (Step 105),
If it is detected that the size is small, an on-time constant (TS) for each model for setting the on-time (TA) of the valve motor 19 rotation time is selected (step 106). 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 that the valve motor 19 is large, the on-time (TA) of the valve motor 19 is detected. Is selected (step 108), and the on-time (TA) of the rotation time of the valve motor 19 is determined by both the above-mentioned frequency-specific and model-specific on-time constants (TL).
The duty ratio of both the rotation stop time and the off time (TB) is 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)
And 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 by frequency and by model,
The rotation of the delivery valves 3 and 3 is controlled and stopped, whereby the grains are delivered from the drying chambers 2 and 2 and the delivery is stopped.

In addition, the control device 45 has the following functions. When the moisture sensor 5 detects the same grain moisture as the finish target moisture set by operating the moisture setting knob 40, it is determined that the drying of the grain has been completed, the dryer 4 is automatically stopped, and the grain is dried. Drying is stopped. Less than,
The operation of the above embodiment will be described.

The setting knobs 40, 41, 4 of the operating device 14
By operating the start switches 38 for starting the drying operation, the parts of the grain dryer 4, the burner 6, the moisture sensor 5, and the like are started, and hot air is generated from the burner 6. Then, the hot air passes through the grain drying chamber 2 from the blowing chamber 11, passes through the exhaust chamber 10 and the exhaust path chamber 16, and is sucked and exhausted by the exhaust fan 15. The grains contained in the grain storage chamber 1 are exposed to the hot air while flowing down from the storage chamber 1 through the drying chamber 2 and are dried. The grains are fed downward by the feeding valve 3 and flow down. Grain raising machine 3 from grain collecting trough 12 through supply trough 35
2 is transported and supplied to the inside by a lower transport spiral, is transported upward by a bucket conveyor 33, and is supplied into the transport gutter 8 via the ejection tube 34. From this transport gutter 8 onto the diffusion plate 31 by the upper transport spiral. It is transported and supplied, and is uniformly diffused and reduced into the storage chamber 1 by the diffusion board 31 and circulated and dried.

The grain moisture detected by the moisture sensor 5 is:
When the same grain moisture as the finish 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 the dryer 4 to stop automatically, and The drying of the grains is stopped. At the time of this drying operation, the valve motor 19 which rotates the delivery valve 3 is rotated according to the model 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 the time and the off-time (TB) of the rotation stop time is selected, and the selected on-time (TA) and off-time (TB) are selected.
Then, the feed valve 3 is intermittently driven to rotate, and the grain is dried while being intermittently fed.

In the setting operation, the feed valve 3 is controlled to be stopped, and the setting operation of the grain is performed. During the discharging operation, the delivery valve 3 is controlled to be continuously rotated, and the discharging operation of the dried grains is performed. In the above-described embodiment, the model difference is selected and operated by using the model setting knob 43. However, a model discriminating port may be provided in a motor connector or the like that differs for each model so that the CPU 50 can automatically control the model. .

[Brief description of the drawings]

 FIG. 1 shows an embodiment of the present invention.

FIG. 1 is a flowchart.

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

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

FIG. 4 is a block diagram.

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

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

FIG. 7 is an enlarged sectional view taken along the line AA of FIG. 5;

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

[Explanation of symbols]

 1 Grain storage room 2 Grain drying room 3 Feeding valve

Continuation of the front page (56) References JP-A-5-196360 (JP, A) JP-A-4-366386 (JP, A) JP-A-59-49481 (JP, A) JP-A-3-124197 (JP) (U, JP) 4-136492 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) F26B 25/00 F26B 17/14

Claims (1)

(57) [Claims] 1. A hot air is blown into the drying chamber 2 to dry it while feeding and flowing down the kernels from the upper grain storage chamber 1 to the lower grain drying chamber 2 by rotating the feeding valve 3. In a grain dryer, the type of the dryer according to the size of the dryer, which is set according to the amount of grain to be dried, and the power supply 5
The feeding valve 3 is rotated by the rotation driving means at a duty ratio set for each model and for each of the 50 and 60 cycles so as to secure a predetermined amount of fed grains to be fed down by the feeding valve 3 for every 0, 60 cycles. A grain dispensing control method, wherein the grains are dispensed and flown down by intermittent rotation drive control.