JPH0522155B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a grain drying control device for a grain dryer.

Problem to be Solved by the Invention While the grains are being circulated downward from the storage chamber to the drying chamber, the temperature of the hot air heated by the burner is detected by a temperature sensor, and this hot air is ventilated into the drying chamber. The grains flowing down the drying room are exposed to this hot air and dried, the moisture of the grains being dried is detected by a moisture sensor, and the drying controller automatically controls the dryer based on the values detected by each sensor. In the drying type dryer, if a series of test runs from loading operation to discharging operation are attempted without storing grains in the storage chamber, for example, because there are no grains, the Since the moisture sensor does not detect the moisture in the grains, the moisture sensor does not detect that the moisture in the grains has reached the specified moisture content, so the control cannot proceed from the drying operation operation process to the discharge operation operation process. The purpose is to enable a trial run to be performed in the same step as the automatic drying step even when the dryer is not housed in the storage chamber.

Means for Solving the Problems The present invention includes a temperature sensor 2 that detects the temperature of hot air heated by a burner 1, a moisture sensor 3 that detects the moisture content of grains dried by the hot air, and the like. The drying control device 4 automatically dries the grains based on the detections by these sensors 2 and 3 while circulating the grains. A test run control device 6 that controls the automatic drying process and operates each part of the drying process in accordance with the same process.
A grain drying control device for a grain dryer is configured.

Functions and Effects of the Invention The automatic drying operation is carried out by a drying control device 6 that controls each part of the dryer using a temperature sensor 2 that detects the temperature of hot air generated from the burner 1, a moisture sensor 3 that detects moisture in the grains, various safety sensors, etc. is automatically controlled and the grains are automatically dried. However, when performing a series of test runs from loading work to discharge work without storing grains in the dryer, the test run switch 5 must be operated. Then, the trial run control device 6 causes the sensors 2 and 3 and various safety sensors to operate in the same state as when grains are stored in the dryer, and each part of the dryer is automatically controlled. , the dryer is operated and controlled in the same order as in the automatic drying process: the loading process, the drying process, and the discharging process.

By operating the test run switch 5, a series of test run operations from loading operation to discharge operation can be performed in the same process as the automatic drying operation even when grains are not stored in the dryer. So,
It is possible to prevent problems occurring during automatic drying operation, and at the same time, it is possible to confirm a trial run in a short time, and it is also possible to check the circuits of each sensor 2, 3, etc.

Embodiment In the illustrated example, the machine wall of the dryer 7 is rectangular in plan view long in the front-rear direction, and the front part of this machine wall is equipped with a burner 1, a grain hoist 8, a moisture sensor 3, and an operating device 9.
etc., an exhaust fan 10 is provided at the rear, a storage chamber 11 is provided in the upper part of the interior, and drying chambers 12, 12 are provided in the lower part, and a hot air chamber 13 is formed between the drying chambers 12, 12. At the bottom of the drying room 12 there is a spiral grain collection gutter 14
A temperature sensor 3 is provided in the hot air chamber 13, various drive safety sensors 16 and various combustion safety sensors 17 are provided in each part of the dryer 7, and a spiral sensor is provided in the upper part of the storage chamber 11. Mobile gutter 15
This is a configuration with a

The operating device 9 is box-shaped and has a loading switch 18, a drying switch 19, an ejection switch 20,
It has a stop switch 21, a trial run switch 5, a target moisture setting knob 22, a target hot air temperature setting knob 23, a display window 24, etc., and has a drying control device 4, a trial run control device 6, etc. inside.

The drying control device 4 receives the set value 25 set by the target moisture setting knob 22 during automatic drying work, and compares this set value 25 with the grain moisture value detected by the moisture sensor 3. A comparator 26 that controls the moisture content, and a moisture control device 27 that controls the moisture sensor 3 based on the comparison value compared by the comparator 26, and a moisture control device 27 that controls the moisture sensor 3 to set the target hot air temperature setting value 25 using the target hot air temperature setting knob 23.
is input, and this set value 25 and the temperature sensor 2
A comparator 26 that compares the temperature of the hot air in the hot air chamber 13 detected by the hot air temperature controller 26, and a hot air temperature control that controls the fuel supply pump 34 that supplies combustion fuel to the burner 1 based on the comparison value compared by the comparator 26. Device 2
a comparator 26 for comparing the set value 25 inputted by the various driving safety sensors 16 and the various combustion safety sensors 17 with the detected values detected by the various safety sensors 16 and 17; This configuration includes various safety sensor control devices 29 and the like that control these various safety sensors 16 and 17.

The trial run control device 6 has a configuration including an automatic drying control switching device 30, a tensioning operation process control device 31, a drying operation process control device 32, and a discharge operation process control device 33.

The grain raising machine 8 is provided with a built-in bucket conveyor, the lower end communicates with the terminal end of the helical grain collecting trough 14, and the upper end communicates with the helical grain transfer trough 15.
The central part of the helical transfer gutter 15 is open, and a diffusion plate 40 for dispersing and supplying the transferred grains into the storage chamber 11 is provided below the opening. The drive safety sensor 1 for detecting the amount of grain to be loaded is located above the storage chamber 11.
A full quantity detection sensor 6 is provided, and this full quantity detection sensor detects grain tensioning after a predetermined period of time by the operation of the trial running switch 5 and by the pitching operation process control device 31 of the trial running control device 6. A pseudo output that is the same as the output detected by the full quantity detection sensor is output when This is a configuration that will be progressed.

A grain raising motor 35 is installed on one side of the upper part of the grain raising machine 8 to rotate the bucket conveyor belt and the helical transfer gutter 15, and a grain raising part at the upper part is provided with a grain raising machine motor 35 for detecting the circulation of grains. A circulation detection sensor of the drive safety sensor 16 is provided, and during the trial operation, this circulation detection sensor is controlled by the drying process control device 32 to output the same output as that detected when the grains are circulating. A pseudo output is output, and the circulation detection sensor detects this output to continue the trial drying operation.

The moisture sensor 3 has a box shape, and the moisture detecting section protrudes from the box body, and the protruding moisture detecting section is mounted so as to protrude into the storage chamber 11. The moisture sensor 3 is configured to crush the grains to be crushed under pressure using the moisture detection section and detect the moisture content of the crushed grains.
2, the moisture sensor 3 sequentially outputs a pseudo output that is slightly higher than the output when detecting grain moisture at the target moisture set value, and this pseudo output outputs the same output as the target moisture set value. When the moisture sensor 3 detects the moisture, the drying operation process control device 32 controls the drying process to proceed to the next process, a test run discharge operation.

After a predetermined period of time after proceeding to the trial discharge operation, the discharge operation process control device 33 outputs a pseudo output that is the same as the output detected by the circulation detection sensor when the grains are not circulating, and this output is used as the output from the circulation detection sensor. When detected, the dryer 7 is controlled by the discharge operation process control device 33 to automatically stop it.

The burner 1 is housed in a burner case 36 provided at the front of the machine wall, and the combustion safety sensor 17 detects the amount of air passing through the burner case 36 from the upper wall plate of the burner case 36.
An air flow rate detection sensor is provided to protrude into the burner case 36, and a blower 37 and a blower motor 38 are provided on the outer side of the lower wall plate of the burner case 36 for blowing combustion air for combustion to the burner 1. This configuration includes the fuel supply pump 34 that supplies combustion fuel to the burner 1, and the burner 1 includes a flame detection sensor of the combustion safety sensor 17 that detects the state of the combustion flame.

The hot air generated from the burner 1 is sucked and discharged by the air exhaust fan 10, and is drawn into the hot air chamber 1.
3, the drying chamber 12 is cross-ventilated, and the grains stored in the dryer 7 are exposed to this hot air and dried while flowing down inside the drying chamber 12,
The exhaust fan 10 is configured to be driven by an exhaust fan motor 39 provided at the lower part of the machine wall, and the combustion fuel supplied into the burner 1 is controlled by the temperature sensor 2 provided in the hot air chamber 13. This hot air chamber 13 to detect
According to the hot air temperature set by the target hot air temperature setting knob 23, the fuel supply pump 34 is controlled by the test run control device 6 during trial operation, and by the drying control device 4 during automatic drying operation.
is automatically controlled and supplied.

During automatic drying work, the switches 18, 19, 20 of the operating device 9 and the pinchers 2
2 and 23, the drying control device 4 rotationally drives and controls the sensors 2 and 3, the safety sensors 16 and 17, the motors 35, 38, and 39, and the fuel supply pump 34. The configuration is such that an automatic drying operation is performed, and during a test run, the test run control device 6 controls the sensors 2 and 3 and the safety sensor 1 by operating the test run switch 5 of the operating device 9.
6 and 17 are controlled by pseudo outputs, and each of the motors 35, 38, 39 and the fuel supply pump 34 are rotationally driven to perform a test run operation.

In addition, when the moisture level of the grain detected by the moisture sensor 3 is high, an alarm device is provided that issues an alarm prompting the start of operation, and when this alarm is issued,
It is also possible to provide a control device that performs ventilation drying for a predetermined period of time and then performs hot air drying.

During automatic drying work, the dryer 7 is started by operating the switches 18, 19, 20 and the handles 22, 23 of the operating device 9, and at the same time the burner 1 starts combustion, and the burner 1 starts burning. The hot air is sucked and exhausted by the exhaust fan 10 at the rear, and the hot air is discharged into the hot air chamber 1.
3 cross-ventilates the drying chamber 12, and the grains stored in the dryer 7 are exposed to this hot air and dried while flowing down inside the drying chamber 12, and the moisture sensor 3 detects the circulating grains. Moisture is detected, and when the moisture of the grains reaches a specified moisture content, the dryer 7 is automatically controlled by the drying control device 4 of the operating device 9 and automatically stopped.

During trial run work, by operating the trial run switch 5 of the operating device 9, the automatic drying control switching device 30 of the trial run control device 6 switches to the trial run work, and the test run staking work process starts, and the staking work process control device 31 switches to the test run work. The full amount detection sensor of the drive safety sensor 16 detects that the dryer 7 is full of grains after a predetermined time, and upon this detection, automatic control proceeds to the trial drying operation process, and the drive safety sensor 16 The circulation detection sensor 3 detects that the grains are circulating and continues the trial drying operation, and after a predetermined time, the moisture sensor 3 detects the same output as when the drying of the grains has finished, and this detection causes the trial run drying operation to continue. After a predetermined period of time, the circulation detection sensor of the drive safety sensor 16 detects that the grains are not circulating, and based on this detection, the trial run control device 6 automatically controls the dryer 7. will stop automatically.

By operating the trial run switch 5 of the operating device 9, even if no grains are stored in the dryer 4, the series of steps from loading operation to discharging operation can be performed in the same process as the automatic drying operation. A trial run can be carried out in a short time, and at the same time, problems that occur during automatic drying operation can be prevented.

[Brief explanation of the drawing]

The figure shows one embodiment of the present invention.
The figure is a block diagram, the second figure is a partially cutaway side view,
FIG. 3 is a front view, and FIG. 4 is a front view of a portion thereof. In the figure, 1 is a burner, 2 is a temperature sensor, 3
4 is a moisture sensor, 4 is a drying control device, 5 is a test run switch, and 6 is a test run control device.

Claims (1)

[Claims] 1 A temperature sensor 2 that detects the temperature of the hot air heated by the burner 1, a moisture sensor 3 that detects the moisture content of the grains dried by this hot air, etc., and these sensors are installed while circulating the grains. 2,
The drying control device 4, which performs automatic drying based on each detection by step 3, is controlled to proceed in the same manner as the automatic drying process, regardless of the detection of the hot air temperature, grain moisture, etc., by operating the trial run switch 5. A grain drying control device for a grain dryer, which is provided with a trial run control device 6 for operating each part of the drying machine.