JPH074840A - Grain discharge control device for grain dryer - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to control the rotation of both the blower motor and the delivery valve motor with a single inverter. [Structure] A blower motor 2 that rotationally drives a blower 24 that blows combustion air with an inverter 21 during a drying operation
5 is a rotation valve motor 2 and a discharge valve motor 2 that drives the inverter 21 and the discharge valves 12 and 12 to rotate during discharging work.
Rotation is controlled by switching control so as to connect with 0. [Effect] Since the rotation of two motors is controlled by one inverter, the cost can be reduced, and the efficiency of the discharging work can be improved by controlling the motor to rotate the delivery valve at a high speed during the discharging work. Improved.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, while a grain is being sent out by a rotary drive of a delivery valve from a grain storage chamber in an upper part to a grain drying chamber in a lower part, a dry air generated from a dry air generating device is By passing through the drying chamber, the circulating grains are exposed to the drying air and dried. During this drying operation, the air for combustion, which is supplied to the dry air generator and is commensurate with the amount of fuel for combustion, is controlled by the blower motor of the IC-controlled DC motor to control the rotation speed of the blower. Blown.

Also, during the drying work and the discharging work for discharging the grains out of the machine, the rotation speed of the feeding valve is the same,
The amount of grain delivered was the same.

[0004]

The grains stored in the grain storage chamber of the grain dryer are fed from the storage chamber to the grain drying chamber by the rotation drive of the feeding valve while being fed down.
The dry air generated from the dry air generator passes through the drying chamber, so that the circulating grains are exposed to the dry air and dried. During this drying operation, the temperature of the dry air generated by the dry air generator is set according to the type of grain to be dried and the amount of swelling, so that the set dry air temperature is reached.
A predetermined amount of combustion fuel is supplied to the dry air generator, and the combustion air corresponding to this amount of combustion fuel is blown by this blower and burned with the rotation speed of the blower controlled by an IC-controlled DC motor. To do.

Also, during this drying operation and, for example, the discharging operation for discharging the dried grains to the outside of the machine, the number of rotations of the feeding valve is the same, and the amount of the grains fed by the feeding valve is the same. It was Change the blower motor of the IC-controlled DC motor that rotates the blower during the drying operation to a normal motor,
The rotation speed of the blower motor is controlled by an inverter, and the discharging work time is increased by increasing the rotation speed of the feeding valve and increasing the amount of the grain fed during the discharging work, compared to during the drying work. In order to shorten the above, the feeding valve motor that rotationally drives the feeding valve is switched and connected to the inverter at the time of discharging work, and the rotation speed control of the feeding valve motor is controlled by the inverter.

[0006]

According to the present invention, the grain is delivered to and dried from the upper grain storage chamber 8 to the lower grain drying chamber 9 by rotationally driving a delivery valve 12 to deliver the grain. A blower motor 25 for rotating and driving a blower 24 that blows dry air generated from the wind generator 3 to dry it and blows combustion air that is supplied to the dry air generator 3 and burns in accordance with the amount of combustion fuel to be burned. In the grain dryer that controls the rotation of each part by the inverter 21 and performs the drying work, and controls the rotation of each part according to each work such as the loading work and the discharging work other than the drying work, the discharging work of discharging the grain to the outside of the machine. In this case, the feeding valve motor 20 that rotationally drives the feeding valve 12 is connected to the inverter 21 to control the rotation of the feeding valve motor 20 to control the discharged grain amount of the grain drying machine. Grain discharge And the configuration of the control device.

[0007]

The grain stored in the grain storage chamber 8 of the grain dryer is fed from the storage chamber 8 to the grain drying chamber 9 by the rotation drive of the feeding valve 12 while being fed down and dried. The dry air generated from the generator 3 passes through the drying chamber 9 so that the circulating grains are exposed to the dry air and dried. During this drying operation, the temperature of the dry air generated by the dry air generating device 3 is set according to the type of grain to be dried and the amount of the dry air, and the dry air generating device is adjusted so as to reach the set dry air temperature. 3 is supplied with a predetermined amount of combustion fuel, and the combustion air corresponding to the supplied amount of fuel is blower 24.
The rotation of the blower motor 25 that rotates the fan drives the inverter 2
Controlled by 1, the blower 24 blows a predetermined amount of air for combustion and burns it.

Further, at the time of discharging work for discharging the dried grains to the outside of the machine after the drying of the grains is completed, the feeding valve 1 for feeding the grains is used.
The feed valve motor 20 for rotatably driving 2 is switched and connected to the inverter 21, and the feed valve motor 20 is controlled by the inverter 21 to rotate at a higher speed than during the drying operation, and the rotation speed of the feed valve 12 rotates at a high speed. Is controlled so that the amount of fed grains becomes large and is discharged.

[0009]

According to the present invention, one inverter 21 is provided.
By controlling the rotation of the blower motor 25 during the drying operation and controlling the rotation of the delivery valve motor 20 during the discharging operation, it becomes unnecessary to use an IC-controlled DC motor, which leads to cost reduction. By the high-speed rotation drive control of the delivery valve motor 20, the discharging work can be completed in a short time, and the discharging work efficiency is improved.

[0010]

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 1 for drying grains.
It shows a state in which a moisture sensor 2 for detecting the moisture of the grain, a burner 4 of a dry air generating device 3 for generating dry air, and the like are attached.

The dryer 1 has a rectangular shape which is long in the front-rear direction and has a transfer gutter 6 and a ceiling plate 7 in which a transfer spiral is rotatably mounted on the upper part of the machine wall 5. Below the ceiling plate 7, grains are provided. A grain storage chamber 8 for storing grains is formed. Grain drying room 9,
In the lower side of the storage chamber 8, 9 is the exhaust chambers 10 on the left and right sides,
10 is provided between the blower chamber 11 and the central blower chamber 11, and a feeding valve 1 for feeding and flowing down the grains is provided below the drying chambers 9 and 9.
2 are rotatably supported respectively.

The grain collecting trough 13 rotatably supports a transfer spiral and is provided below the respective drying chambers 9 and 9 to communicate with each other. The burner 4 of the dry air generator 3 is installed inside a burner case 14, and the burner case 14 is located on the outside of the front machine wall 5 on the front side of the front machine wall 5 so as to correspond to the inlet side of the blower chamber 11. Removably installed on the dryer 1, the moisture sensor 2
Further, an operating device 15 for starting and stopping the burner 4 for each of the operations of loading, drying and discharging is detachably provided on the front machine wall 5.

The exhaust fan 16 is provided on a rear side exhaust wall 10, which is provided on a central rear side exhaust duct 18 of the exhaust passage chamber 17 provided so as to communicate with the left and right exhaust chambers 10, 10. An exhaust fan motor 19 that rotationally drives the exhaust fan 16 is provided in the No. 5.
The delivery valve motor 20 rotationally drives the delivery valves 12 and 12 via a reduction mechanism. The feeding valve motor 20 is switched and connected to the inverter 21 during the discharging work, and the feeding valve motor 20 is controlled to rotate at a higher speed than during the drying work, and the amount of grain to be fed by the feeding valves 12 and 12 is increased. Is configured to be increased.

The fuel pump 22 has a fuel valve,
The fuel pump 22 is provided outside the lower plate of the burner case 14 and opens and closes the fuel valve to suck the combustion fuel in the fuel tank 23 and supply it to the burner 4. The blower 24 is provided on the outer side of the upper plate, and the blower motor 25 is connected to the inverter 21 during the drying operation.
1, the blower motor 25 is rotationally driven at variable speed, and combustion air commensurate with the amount of fuel supplied is supplied to the burner 4 by the blower 2
Blows at 4.

The diffusion plate 26 is provided in the central portion of the bottom plate of the transfer gutter 6 in the front-rear direction and below the supply port for supplying the transfer grains to the storage chamber 8 to uniformly diffuse and reduce the grains to the storage chamber 8. ing.
The grain-raising machine 27 is provided on the outer side of the front machine wall 5, and has a belt with a bucket conveyor 28 stretched inside, and the upper end has a throw-out tube 29 between the transfer gutter 6 and the starting end. The lower end is provided with a supply gutter 30 between the terminal end of the grain collecting gutter 13 and the lower end thereof.

The grain elevator motor 31 is used for the bucket conveyor 2
The belt with 8, the transfer spiral in the transfer gutter 6, the transfer spiral in the diffuser 26 and the grain collecting gutter 13, etc. are rotationally driven. The moisture sensor 2 is provided substantially in the central portion in the vertical direction of the grain raising machine 27. The moisture sensor 2 is rotated by the moisture motor 32 when an electric measurement signal is transmitted from the operating device 15. Each part is driven to rotate, and bucket conveyor 2
At 8, the grain which falls during the transportation to the upper part is received, and the moisture of the crushed grain is detected while crushing the grain with pressure.

The operating device 15 has a box shape, and a drier 1, a moisture sensor 2, a burner 4 and the like are put on a surface plate of the box body, and each starting switch 33 is operated for starting each of drying and discharging operations. , A stop switch 34 for stopping operation, a moisture setting knob 3 for setting a finishing target moisture of the grain according to an operation position
5. Grain type setting scoop 36 and stake amount setting scoop 3 for setting the hot air temperature generated from the burner 4 according to the operation position
7. A display unit 38 for digitally displaying various display items and a monitor display are provided.

The control device 39 is provided in the operating device 15, and the inverter 21 and the changeover switch 40 are also provided in the operating device 15, and the detection values detected by the moisture sensor 2 and the hot air temperature sensor 41 and the like, each switch. The operation of 33, 34 and the operation of each setting knob 35, 36, 37, etc. are input,
CPU 4 which performs arithmetic logic operation and comparison operation on these inputs
It is composed of 2 etc., and each CPU 19, 31,
32, the fuel valve, the fuel pump 22 and the like are configured to be started, stopped, adjusted and controlled. The setting knobs 35 and 3
6 and 37 are rotary switch systems, and predetermined numerical values and types are set according to the operation position.

In the CPU 42, when the start switch 33 for starting the drying operation is operated and this operation is input, the changeover switch 40 is automatically controlled to the (b) side,
The control signal from the CPU 42 controls the delivery valve motor 20 to rotate at a predetermined low speed, and the delivery valves 12 and 12 rotationally driven by the delivery valve motor 20 are controlled to rotate at a predetermined low speed. A smaller amount of grain is delivered by the delivery valves 12 and 12 and flows down,
It is configured to circulate and dry, and the blower motor 25 is controlled by the inverter 21 so that the combustion air corresponding to the amount of combustion fuel supplied to the burner 4 is blown to the burner 4 by the blower 24. .

When the start switch 33 for starting the discharging work is operated and this operation is input to the CPU 42, the changeover switch 40 is automatically controlled to (a) side, and the inverter 21 and the feeding valve motor 20 are separated. Connected,
A control signal from the CPU 42 controls the delivery valve motor 20 to rotate at a predetermined high speed via the inverter 21, and the delivery valves 12 and 12 rotationally driven by the delivery valve motor 20 are controlled to rotate at a predetermined high speed. , A larger amount of grain than in the drying operation is generated by the feeding valve 12, 1
It is configured so that it is fed out and flowed down in 2 and discharged to the outside of the machine.

The change-over switch 40 may be of a rotary switch type which is mounted on the surface plate of the operating device 15 and is manually changed over depending on each of the drying work and the discharging work. The operation of the above embodiment will be described below. In the drying operation for drying the grain, each part of the grain dryer 1 is operated by operating the setting scoops 35, 36, 37 of the operation device 15 to predetermined positions and operating the start switch 33 for starting the drying operation. , The burner 4 of the dry air generator 3, the moisture sensor 2, etc. are started, and the blower motor 25 causes the inverter 2 to operate.
1, the combustion fuel is supplied by the fuel pump 22 in order to bring the dry air temperature set to the burner 4 to the burner 4, and the combustion air commensurate with the supplied combustion fuel is supplied by the inverter 21. By controlling the rotation of the blower motor 25, the rotation of the blower 24 is controlled and the combustion air is
The air is supplied and burned to generate a dry air, and the dry air passes from the air blowing chamber 11 through the grain drying chambers 9 and 9 to the air exhaust chambers 1
The exhaust air is sucked and exhausted by the air exhauster 16 through the air passages 0, 10 and the exhaust air passage chamber 17.

The grains stored in the grain storage chamber 8 are dried by being exposed to the dry air while flowing down from the storage chamber 8 into the drying chambers 9 and 9, respectively. The feeding valve motor 20 controls the CPU 42 to rotate at a predetermined low speed, and the low speed rotation of each of the feeding valves 12 and 12 causes the feeding valves 12 and 12 to be fed to the lower portion to flow down to pass from the grain collecting trough 13 through the supply trough 30 to the grain elevator 27. It is transferred and supplied by the lower transfer spiral, is transferred to the upper part by the bucket conveyor 28, is supplied into the transfer gutter 6 through the ejection cylinder 29, and is transferred from the transfer gutter 6 onto the diffusion plate 26 by the upper transfer spiral. It is supplied, uniformly diffused and reduced into the storage chamber 8 by the diffusion plate 26, and circulated and dried.

When the grain moisture detected by the moisture sensor 2 is the same as the finishing target moisture set by operating the moisture setting knob 35, it is detected that the drying is completed, and the control is performed. The device 39 automatically controls the dryer 1 to automatically stop, and the drying of the grain is stopped. In the discharging work for discharging the dried grains, each part of the dryer 1 is started by operating the start switch 33 for starting the discharging work of the operation device 15, and the changeover switch 40 causes the feeding valve motor 2 to move.
0 is switched to connect with the inverter 21, and the dried grain stored in the storage chamber 8 is controlled by the feeding valve motor 20 from the CPU 42 via the inverter 21 so that the feeding valve motor 20 rotates at high speed. 12 and 12 are controlled to rotate at high speed, and the inside of each of the drying chambers 9 and 9 is fed from the storage chamber 8 to the lower portion by the high-speed rotation of the feeding valves 12 and 12, and flows down to supply the gutter 30 from the grain collecting trough 6. Through the grain elevator 27
It is transferred and supplied by a lower transfer spiral, is conveyed to the upper part by the bucket conveyor 28, is supplied into the transfer gutter 6 through the ejection cylinder 29, and is discharged from the bottom of the start end of the transfer gutter 6 to the outside of the machine.

FIGS. 6 and 7 are views showing another embodiment. An inverter 43 is provided as shown in the block diagram of FIG. 6, and the inverter 43 has a blower motor 44 for rotationally driving the blower 24 and the feeding valves 12, 12. The feed valve motor 45 for rotating and driving is provided in parallel. The blower motor 44 is a two-pole motor and has a rotation speed of 0 to a predetermined rotation speed, for example, 3600 rpm. p. The range is m. Further, the feeding valve motor 45 is a 4-pole motor, and the rotation speed is from 0 to a predetermined rotation speed, for example, 1800 rpm. p. The range is m.

The blower motor 44, when a large amount of combustion fuel is supplied to the burner 4, blower motor 4
Reference numeral 4 is a configuration in which a predetermined high speed rotation is controlled, and a large amount of combustion air corresponding to the supplied fuel is also controlled, and when the rotation of the blower motor 44 is high speed,
When the amount of stake-in grains is large, the rotation of the feeding valve motor 45 that rotationally drives the feeding valves 12 and 12 is also controlled to a predetermined high-speed rotation, and the blower motor 44 and the feeding motor are fed. The relationship between the on-time and the rotation speed of the valve motor 45 is set and controlled as shown in FIG.

As described above, the rotation of both the motors 44 and 45 can be controlled by the single circuit of the inverter 43, which leads to cost reduction, and when the amount of combustion is large, the amount of grain to be inflated is also large. Therefore, it is a configuration that can speed up the circulation of grains and eliminate water spots. 8 and 9 are views showing another embodiment. As shown in the block diagram of FIG. 8, an inverter 46 is provided, and the inverter 46 is provided with a blower motor 49 for rotationally driving the blower 24 and rotationally driving the delivery valves 12, 12. And a feed valve motor 50 that is provided between the inverter 46 and the feed valve motor 50.
A switch 47 for N-OFF is provided, and this switch 47
Turns on the control signal from CPU 42 via relay 48
It is configured to control -OFF.

The blower motor 49, when a large amount of fuel for combustion is supplied to the burner 4, is blower motor 49.
Is controlled to a predetermined high speed rotation, and is configured to supply a large amount of combustion air corresponding to the supplied fuel.
Further, when the blower motor 49 is rotating at a high speed, the amount of grain to be fed in is large, and the feeding valve 1 is accompanied by this.
The rotation of the feed valve motor 50 that drives the rotary shafts 2 and 12 is also controlled to a predetermined high-speed rotation.
0 is a configuration in which ON-OFF control is performed at predetermined intervals, and the relationship between the on-time and the rotation speed of the blower motor 49 and the delivery valve motor 50 is set and controlled as shown in FIG.

As described above, the rotation of both the motors 49 and 50 can be controlled by the single circuit of the inverter 46, which leads to cost reduction, and when the combustion amount is large, the amount of expansion is large. If the grain circulation is made extremely fast during the amount of swelling, the amount of desquamation may increase, or the grain temperature may not rise easily and the drying speed may decrease. When the on-time or more, the rotation of the delivery valve motor 50 is turned on and off.
It is intended to eliminate these.

[Brief description of drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 Block diagram

[Figure 2] Side view of the grain dryer

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

FIG. 4 is a rear view of a part of the grain dryer.

FIG. 5 is an enlarged front view in which a part of the operating device is broken.

FIG. 6 is a block diagram showing another embodiment.

FIG. 7 is a diagram showing another embodiment, which is a relational diagram of the on-time and the rotation speed of the blower motor and the delivery valve motor.

FIG. 8 is a block diagram showing another embodiment.

FIG. 9 is a diagram showing another embodiment, which is a relational diagram of the on-time and the rotation speed of the blower motor and the delivery valve motor.

[Explanation of symbols]

 3 Dry Air Generator 8 Grain Storage Room 9 Grain Drying Room 12 Feeding Valve 20 Feeding Valve Motor 21 Inverter 24 Blower 25 Blower Motor

Front page continued (72) Inventor Katsunori Kono 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. ) Inventor Eiji Nishino No. 1 Yakura, Tobe Town, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. Drying generated from a drying air generator 3 to the drying chamber 9 while the grains are fed out by the rotational drive of a feeding valve 12 from the upper grain storage chamber 8 to the lower grain drying chamber 9 and flowing down. Ventilation is performed to dry the air, and at the same time, the dry air generator 3
The blower motor 25 that rotates and drives the blower 24 that blows the combustion air that is commensurate with the amount of combustion fuel that is supplied to and burned, and performs the drying work by controlling the rotation of the blower motor 25 by the inverter 21. In a grain dryer that controls the rotation of each part according to each work such as, at the time of discharging work for discharging the grain to the outside of the machine, connect a feeding valve motor 20 that rotationally drives the feeding valve 12 to the inverter 21. A grain discharge control device for a grain dryer, which controls rotation of the feeding valve motor 20 to control a discharged grain amount.