JPH0658667A - Operation control system for crop particle drying machine - Google Patents

Abstract

PURPOSE:To accurately check combustion state of a hot air combustion device even if a trial operation without any crops there is carried out by a method wherein when non-presence of crops is detected by an unhulled rice flow sensor after starting a trial operation of a drying machine, the rotation of an air discharging machine is controlled to be lower than in the time of a crop particle drying operation by a predetermined number of rotation. CONSTITUTION:When a trial operation is carried out, both a starting switch for starting a drying operation of an operating device 15 and a buzzer stopping switch are operated, the trial operation is selected and a crop particle drying machine is started. If a passing of crop particles within a feeding cylinder 27 is not detected by a unhulled rice flow sensor 28, a blower 16 is controlled to show a lower number of rotation than that of the drying operation by a predetermined amount and an amount of sucked air is controlled to be decreased by a predetermined amount. A burner 3 in a hot air combustion device 4 is ignited under this state of low air volume and then the burner 3 is checked under this combustion state. With such an arrangement, it is possible to perform an accurate check of combustion at the air combustion device 4 even under the trial operation without any crop particles therein under the same condition as that of the drying operation.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, while a grain is being fed out and circulated from a grain storage chamber of a grain dryer to a grain drying chamber,
The hot air generated from the hot air device and the outdoor air passing around the hot air device are mixed to form a dry air, and the dry air is sucked and exhausted by the exhaust fan through the drying chamber, The grains in circulation are exposed to this drying air and dried.

Before starting the drying operation, a trial run of the dryer is usually performed. Even if a paddy flow sensor for detecting the presence of grains circulating during the trial run detects no grains, the trial run is performed. The rotation of the blower at the time of and the rotation of the blower at the time of the drying operation were operation control methods controlled to the same rotation.

[0004]

The grains contained in the grain storage chamber of the grain dryer are fed from this storage chamber to the grain drying chamber and are circulated while being drawn down and heated by the hot air generator. , The outside air that passes around the hot air device is mixed to form a dry air, and the dry air passes through the drying chamber and is sucked and exhausted by an air blower, so that the dry air is flowing down in the drying chamber. The grain is exposed to this dry air and dried.

Before this drying work, a test run work may be carried out to check each part in a state where the grain is not put into the dryer. During this test run work, the paddy flow sensor detects that there is no grain. Even if it is detected, the rotation of the exhaust fan during the test operation work is the same as the rotation of the exhaust fan during the drying work, and since the grain is not stretched, the drying chamber Is empty, and therefore, there is no wind pressure on the outside air that is sucked in and passes through this drying chamber, and the amount of outside air that is sucked in is large, which increases the combustion state of the hot air device during test operation. There are times when it is not possible to check accurately, and we try to eliminate this.

[0006]

According to the present invention, the hot air generated from the hot air device 4 and the hot air device 4 of the hot air device 4 are fed while the grains are being fed from the upper grain storage chamber 8 to the lower grain drying chamber 9 and flowing down. The dry air mixed with the outside air passing through the surroundings is blown into the drying chamber 9 to be sucked and exhausted by the exhaust fan 16 to be dried, and the paddy flow sensor 28 for detecting the presence or absence of the circulating grain.
In the grain dryer provided with, when the test run of the dryer is started and the paddy flow sensor 28 detects that there is no grain,
The rotation of the blower 16 is controlled to a predetermined rotation speed lower than the rotation speed during the grain drying operation, and the operation is performed.

[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 and is circulated while flowing down, while the hot air generated from the hot air device 4 is blown. And the outside air that passes around the hot air device 4 are mixed to form a dry air, and the dry air passes through the drying chamber 9 and is sucked and exhausted by the air blower 16, so that the drying chamber 9
The grains flowing down are exposed to this dry air and dried.

If the dryer is started for trial operation before the drying operation, the dryer is started and the paddy flow sensor 28
Detects that there is no grain, the rotation of the exhaust fan 16 is controlled to be a predetermined rotation speed lower than the rotation of the exhaust fan 16 during the drying operation in the test operation work by this detection. The dry air flow passing through 9 is controlled to be reduced by a predetermined air flow, and is controlled to the same degree as the dry air flow passing through the drying chamber 9 during the drying work, and the trial operation work is performed, and the same dry air flow state as the dry work state. The test operation work is carried out to check the combustion state of the hot air device 4.

[0009]

According to the present invention, during the trial operation work in the state where there are no grains in the grain drying chamber 9, the amount of dry air passing through the drying chamber 9 during the drying work is controlled to be the same. As a result, the combustion state of the hot air device 4 is accurately checked even during the grainless trial run by reproducing the same combustion state as the combustion state of the hot air device 4 during the drying operation and burning. be able to.

[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 hot air device 4 equipped with a moisture sensor 2 for detecting the moisture of the grain and a burner 3 for generating hot air is installed.

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,
Reference numeral 9 denotes a ventilation chamber 1 on the left and right sides below the storage chamber 8.
0 and 10 are provided between the blower chamber 11 and the central blower chamber 11. At the lower portions of the drying chambers 9 and 9, feed valves 12 for feeding and flowing the grains are rotatably supported.

In the grain collecting trough 13, a transfer spiral is rotatably supported and provided below the respective drying chambers 9, 9 so as to communicate with each other. The burner 3 of the hot air device 4 is installed inside a burner case 14, and the burner case 14 is provided on the outer surface of the machine wall 5 so as to correspond to the inlet side of the blower chamber 11 on the front side of the machine wall 5. The hot air device 4, the moisture sensor 2 and the dryer 1 are detachably provided, and an operating device 15 for starting and stopping the hot air device 4, the moisture sensor 2 and the dryer 1 for each work of drying, drying and discharging is detachably mounted on the machine wall 5 on the front side. A concave communication connector 15 'is provided on the outside of one side of the operating device 15.

The exhaust fan 16 is provided on the rear-side machine wall 5 and is provided on a central rear-side exhaust cylinder 18 of the exhaust passage chamber 17 provided to communicate with the left and right exhaust chambers 10, 10. An exhaust fan motor 19 that drives the exhaust fan 16 to rotate at a variable speed is provided on the side machine wall 5 to increase / decrease the amount of suctioned air sucked and discharged by the exhaust fan 16. A valve motor 20 drives the delivery valves 12, 12 to rotate via a speed reduction mechanism.

The fuel pump 21 has a fuel valve whose opening and closing is controlled by on-time, and is provided on the outside of the lower plate of the burner case 14. By opening and closing this fuel valve, the fuel pump 21 stores the fuel in the fuel tank 22. The fuel is sucked and supplied to the burner 3. The blower 23 is provided on the outer side of the upper plate, is driven to rotate at a variable speed by a blower motor 24 for speed change, and supplies combustion air corresponding to the supplied fuel amount to the burner 3
The air is blown by the bellows blower 23 for combustion, and the hot air generated by this combustion is mixed with the outside air passing through the burner case 14 to form a dry air.

The flame detection camera 21 'can be mounted in one side of the burner case 14, detects the combustion flame color of the burner 3 and transmits it to the color analysis device 22', which in turn analyzes it. The configuration is such that the flame color is analyzed, and the convex communication connector 23 'provided in the color analysis device 22' is
When connected to the concave communication connector 15 'of the operating device 15, the flame analysis color is input to the operating device 15.

The diffusion plate 25 is provided at the center of the bottom plate of the transfer gutter 6 in the front-rear direction, below the supply port for supplying the transfer grains to the storage chamber 8, and evenly diffusing the grains into the storage chamber 8. I'm giving back. The grain-raising machine 26 is provided outside the front side of the machine wall 5 and has a belt with a bucket conveyor 27 stretched inside thereof, and an upper end portion thereof is an ejecting cylinder 27 ′ between the transfer gutter 6 and a starting end portion thereof. Is provided to communicate with each other, and a paddy flow sensor 28 for detecting the presence or absence of grains passing through the inside of the pipe 27 'is provided in the pipe 27'.
The rotary valve 28a is rotatable by passage of the grain, and the switch 28b is turned on and off by the rotary valve 28a, and the lower end portion is supplied between the terminal end portion of the grain collecting trough 13. A gutter 29 is provided.

The grain elevator motor 30 rotationally drives the belt with the bucket conveyor 27, the transfer spiral in the transfer gutter 6, the diffusion plate 25, the transfer spiral in the grain collecting gutter 13, and the like. The moisture sensor 2 is the grain elevator 26.
The moisture sensor 2 is provided substantially in the central portion in the vertical direction, and the moisture motor 31 is rotated by the transmission of an electrical measurement signal from the operating device 15 to rotationally drive each portion of the moisture sensor 2 and the bucket conveyor. At 27, the grain falling during the transportation to the upper part is received, and the moisture of this crushed grain is detected while crushing the grain with pressure.

The operating device 15 has a box shape, and the dryer 1, the moisture sensor 2, the hot air device 4 and the like are put on the surface plate of the box body, and the starting operation is performed for each operation of drying and discharging. Each start switch 32, stop switch 33 for stopping operation, buzzer stop switch 3 for stopping operation of buzzer 34
5. Moisture setting scoop 36 for setting the finishing target moisture of the grain by the operating position, Grain type setting scoop 37 and setting amount for the hot air temperature generated from the burner 3 by the operating position, timer 38 A setting knob 38 ', a display section 39 for digitally displaying various display items, a monitor display and the like are provided.

The control device 40 is provided in the operation device 15, and is a detection value detected by the moisture sensor 2 and the hot air temperature sensor 41, presence or absence of grains detected by the paddy flow sensor 28, and the flame detection camera. 21 'detects the flame color, the operation of the switches 32, 33, 35 and the setting knob 3
Operations such as 6, 37, 38, 38 'are input, and a CPU 42 having a memory 43 for arithmetic and logical operations and comparison operations of these inputs is provided. The CPU 42 allows the motors 19, 20, 24, 30, 31, the fuel valve, the fuel pump 21, and the like are configured to start, stop, and control, and when both the start switch 32 and the buzzer stop switch 35 that start the drying operation are operated, the trial operation work mode is set. This is a configuration in which the trial run is started after being selected.
Each of the setting knobs 36, 37, 38, 38 'is of a rotary switch type, and predetermined numerical values, types, etc. are set depending on the operating position.

The control of the exhaust fan 16 and the combustion control of the burner 3 at the time of the test operation by the control device 40 are performed as follows. That is, the exhaust fan 1 during the trial run
The rotation control of No. 6 is input to the CPU 42 when both the start switch 32 for starting the drying operation and the buzzer stop switch 35 are operated (step 10).
1), the trial operation work mode is selected, the trial operation is started (step 102), each part of the power system of the dryer 1 is started (step 103), and the combustion of the burner 3 is started (step 104). Detection of grains is started by the paddy flow sensor 28 (step 105), presence of grains is detected (step 106), and when YES is detected, the rotation speed of the air blower 16 is set and stored in the CPU 42 for drying. It is controlled to the specified number of rotations during work (step 10
7) The combustion state of the burner 3 is checked (step 108).

When NO is detected in step 106, the rotation speed of the exhaust fan 16 is controlled to a predetermined rotation speed lower than the rotation speed during the drying operation in which the CPU 42 is set and stored in the CPU 42. The amount of suction air to be sucked and discharged in step 108 is controlled to decrease by a predetermined amount (step 109).
Similarly, the combustion state of the burner 3 is checked (step 108).

Further, in the combustion control of the burner 3 during the trial operation, both the start switch 32 and the buzzer stop switch 35 for starting the drying operation are operated to operate the CP.
When input to U42 (step 201), the trial operation work mode is selected and the trial operation work is started (step 2).
02), when the timer is set to 1 hr by the timer setting regret 38 ', the detection of the paddy flow sensor 28 is ignored at this time (step 203), and the combustion of the burner 3 is started (step 204). Flame detection camera 21 '
The flame color from is input to the color analyzer 22 ',
Whether or not the color data of the combustion flame color is input from the color analysis device 22 'is detected (step 205), and when it is detected that there is no color data, the combustion is performed at the hot air temperature set by the setting scoops 37 and 38. It is maintained and burned for a set predetermined time (step 206). If it is detected that the fuel is burned under the control of the minimum combustion fuel amount (step 207), the flame color information at the time of the minimum combustion amount is input to the CPU 42 and the color information is detected (step 208). Is detected, the blower motor 24 is controlled to rotate at a predetermined low speed set and stored in the CPU 42, and the blower 23 is controlled.
Is controlled to a predetermined rotation speed and a low rotation speed, and the air flow rate is controlled to decrease by a predetermined amount (step 209). When detected as red, the blower motor 24 is controlled to the predetermined rotation high speed rotation set and stored in the CPU 42, the rotation of the blower 23 is controlled to the predetermined rotation high speed rotation, and the blow rate is increased by a predetermined amount. (Step 210). When it is detected as a little blue, it is detected as the optimum air flow rate. From these, the amount of air blown from the blower 23 (point A) at the minimum combustion amount is shown in FIG.
Is detected.

When it is detected as slightly blue in step 208, the maximum combustion fuel amount is controlled (step 211), and the flame color information at the maximum combustion amount is input to the CPU 42 and the color information is detected ( When it is detected as blue in step 212), the blower motor 24 is controlled to the predetermined rotation low speed rotation set and stored in the CPU 42, the rotation of the blower 23 is controlled to the predetermined rotation low speed rotation, and the amount of blown air is reduced. A predetermined amount of decrease control is performed (step 213). When it is detected as red, the blower motor 24 is controlled to the predetermined rotation speed which is set and stored in the CPU 42, and the blower 2 is rotated.
The rotation of No. 3 is controlled to a predetermined rotation speed and a high speed, and the air flow rate is controlled to increase by a predetermined amount (step 214). When it is detected as a little blue, it is detected that the air flow rate is optimum. From these, the amount of air blown from the blower 23 (B
Points) are detected as shown in FIG.

The calculation formula of the slope of the air flow rate at the above-mentioned minimum combustion amount and maximum combustion amount is calculated (step 215),
The gradient of the blown air amount is stored in the memory 43 (step 216), and the trial operation work is stopped (step 21).
7). As a result, the optimum amount of combustion air is automatically set in accordance with the amount of combustion fuel burned in the burner 3, and the set amount of combustion air is blown by the blower 23.

The operation of the above embodiment will be described below. At the time of the trial operation work, by operating both the start switch 32 and the buzzer stop switch 35 that start the drying operation of the operation device 15, the trial operation work is selected, the grain dryer 1 is started, and the paddy flow sensor is selected. Draw-out cylinder 27 at 28
If the passage of the grains is not detected in the inside, the rotation speed of the exhaust fan 16 is controlled to a predetermined rotation speed lower than the rotation speed of the exhaust air fan 16 during the drying operation, and the suction air volume sucked and exhausted by the exhaust fan 16 is controlled to be decreased by a predetermined amount. The burner 3 of the hot air device 4 is burned in the air volume state, and the burner 3 is checked in this combustion state.

In the drying operation, the setting scoops 36, 37, 38, 38 'of the operating device 15 are operated to predetermined positions,
By operating the start switch 32 for starting the drying operation, each part of the dryer 1, the burner 3, the moisture sensor 2
Etc. are started, hot air is generated from the burner 3, and the dry air mixed with the hot air and the outside air passing through the burner case 14 passes from the blower chamber 11 to each grain drying chamber 9 and is exhausted. The air is sucked and exhausted by the air exhauster 16 through the air chamber 10 and the air exhaust 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 are dried by the feeding valves 12. And is flowed down from the grain collecting gutter 13 through the supply gutter 29 to the inside of the grain raising machine 26 by the lower transfer spiral, and is conveyed to the upper part by the bucket conveyor 27 and is transferred to the upper part of the outlet cylinder 27. 6 is supplied into the storage chamber 8 from the transfer gutter 6 and is supplied from the transfer gutter 6 onto the diffusion plate 25 by an upper transfer spiral.

When the grain moisture detected by the moisture sensor 2 is the same as the finishing target moisture set by operating the moisture setting scoop 36, it is detected that the drying is completed, The controller 1 automatically controls the dryer 1 to automatically stop, and the grain drying is stopped.

[Brief description of drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 Block diagram

FIG. 2 Flow chart

FIG. 3 Flow chart

[Fig. 4] Overall side view of the grain dryer, which can be partially broken

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

FIG. 6 is an enlarged front view in which a part of the grain dryer is broken.

FIG. 7 is a relationship diagram between the fuel valve and the blower.

[Explanation of symbols]

 4 Hot air device 8 Grain storage chamber 9 Grain drying chamber 16 Air blower 28 Paddy flow sensor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Ueji, No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture, Technical Department, Iseki Agricultural Machinery Co., Ltd. Engineering Department (72) Inventor Eiji Nishino 1 Yakura, Tobe Town, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. The hot air generated from the hot-air device 4 and the outside air flow passing around the hot-air device 4 while feeding and flowing down the grain from the upper-grain storage chamber 8 to the lower-grain drying chamber 9. The mixed drying air is ventilated to the drying chamber 9 and sucked and discharged by the air exhaust unit 16 to dry, and in the grain drying machine provided with the paddy flow sensor 28 for detecting the presence or absence of circulating grain, the drying is performed. When the paddy flow sensor 28 detects that there is no grain after starting the trial operation of the machine, the rotation of the blower 16 is controlled to be a predetermined rotation speed lower than the rotation speed during the grain drying operation. Characteristic operation control method.