JPH0833277B2 - Drying controller for grain dryer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drying control device for a grain dryer.

[Prior Art] Conventionally, this type of apparatus has a drying mode for automatically performing ventilation drying, but does not have a cleaning mode for sequentially performing a residual particle discharge processing step and a dust processing step of accumulated dust.

[Problems to be Solved by the Invention] The grains supplied into the storage chamber are dried by being exposed to the hot air generated from the burner while circulating down the storage chamber from the storage chamber. When the drying is completed, the dried grains are discharged to the outside of the machine.After completion of this discharging operation, for example, when drying different grains from wheat grains to paddy grains, the previously dried wheat grains are put into the paddy grains. It is necessary to prevent mixing of grains.
For this reason, when cleaning is performed by removing the wheat grains, the cleaning port provided in each part is manually operated in an open state, or the motor for driving each part is manually rotated to perform cleaning. ing.

All such operations must be done manually, which is time consuming and dangerous to clean.

[Means for Solving the Problem] The present invention has been proposed in view of the above-mentioned problems, and has taken the following technical means.

That is, in a grain dryer that dries the grains supplied from the grain raising machine 1 from the storage chamber 2 through the drying chamber 3 by ventilation, a drying mode in which this grain is automatically dried and a grain drying circulation A cleaning mode for performing residual discharge processing in the system or for performing a dust discharge processing step of accumulated dust is built in the CPU 50, and this CPU 50 has a changeover switch 4 for mode selection.
2 and a start switch 40 for cleaning start are connected, and after being switched to the cleaning mode by the changeover switch 42, the automatic cleaning is started by operating the start switch 40. This is the configuration of the drying control device of the machine.

[Operation of the Invention] When drying the grain that has been transported to the upper portion by the grain elevator 1 and supplied into the storage chamber 2, a mode selection switch
Switch 42 to dry mode.

Then, the grains are exposed to the hot air generated from the burner while being circulated in the drying chamber 3 from the storage chamber 2 to be dried, and when the drying is finished, the dried grains are discharged to the outside of the machine.

Then, as the next step, for example, in the case of performing the drying of the different grain from the grain of wheat to the grain of rice, in order to prevent mixing the grain of wheat previously dried into the grain of rice, this grain of wheat is In such a case, it is necessary to remove it, but in such a case, the changeover switch to change from the dry mode to the cleaning mode.
Operate 42, and then turn on the cleaning start switch 40.

Then, the residual grain discharge processing step in the grain drying circulation system,
Alternatively, the cleaning port for performing the dust-disposal process of the accumulated dust is sequentially opened, or the motors that rotate and drive the respective units are sequentially driven to discharge the remaining grains and accumulated dust, and the cleaning is completed.

[Effects of the Invention] Since the present invention is configured as described above, it has the following effects.

That is, after finishing the drying work, the changeover switch 42 is operated to switch the control mode from the drying mode to the cleaning mode,
When the start switch 40 for starting cleaning is pressed, the grain drying circulation system is automatically cleaned sequentially in accordance with a predetermined program, and cleaning can be easily performed.

Moreover, in the present invention, it is not necessary to provide a dedicated switch for starting the cleaning work, and it is sufficient to press the conventional grain discharge switch 40, for example, and therefore the manufacturing cost is low.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In the illustrated example, the machine frame 5 of the dryer 4 has a rectangular shape that is long in the front-rear direction, and the front machine frame 5 has an operating device 6 for starting and stopping the dryer 4 and a burner case 9 having a burner 8 installed therein. A burner case cover 10 is provided at the intake port on the front side of the burner case 9 so as to prevent intake of outside air. The burner case cover 10 is a motor 11 that rotates forward and backward.
It is a structure that winds the rope to open and close by rotating.

A fuel pump 13 having a fuel valve is provided below the burner case 9, and the fuel in the fuel tank 14 is sucked by the fuel pump 13 to supply the fuel to the burner 8.

In addition, a blower 15 and a motor 16 are provided above the burner case 9.
Is provided, the blower 15 is rotated by the rotation of the motor 16, and the combustion air is supplied to the burner 8.

A storage chamber 2 is formed in the upper part of the dryer 4, a drying chamber 3 having a feeding valve 17 therein is provided below the drying chamber 3, a hot air chamber 18 is provided in the drying chamber 3, and an exhaust chamber is provided outside thereof. Forming the nineteen. Further, below the drying chamber 3, there is provided a grain collecting trough 20 having a transfer spiral installed therein. Motor 2 on the lower rear side of the dryer
1, 22 are provided, and the delivery valve 17 is driven via the motor 21 and the speed change mechanism 23. The air blower 12 is rotationally driven by the motor 22. An intake port is provided in the front part of the machine frame constituting the exhaust chamber 19, and an openable / closable exhaust chamber cover 24 is provided at the intake port. The exhaust chamber cover 24 is opened / closed by the operation of a solenoid 25. Is configured as follows. When this air exhaust chamber cover 24 is opened, the outside air is sucked in, and the dust accumulated in the air exhaust chamber 19 is removed by the air exhaust device 12
It is sucked and discharged. As shown in FIG. 5, an openable and closable grain collection gutter cover 55 is provided at the bottom of the grain collection gutter 20 to form a cleaning port there. The grain collecting gutter cover 55 is also opened and closed by the operation of the solenoid 56.

In addition, a transfer gutter 26 with a transfer spiral installed inside the storage chamber 2
The transfer gutter 26 is provided with an open / close valve 53 that can be opened and closed.
Is provided with a discharge tube 54, and a supply port for supplying the transfer grains into the storage chamber 2 is provided at the center of the transfer gutter 26 in the longitudinal direction.
A diffusion board 27 is provided below the supply port. Transfer trough 26
An intake port for inhaling outside air is provided at the start end of the, and a transfer gutter cover 28 that can be opened and closed is provided at the intake port. The transfer gutter cover 28 is also opened / closed by the solenoid 29, and when the transfer gutter cover 28 is opened, the outside air is sucked in from the transfer gutter cover 28 and the transfer gutter cover 28 is opened.
The air blower 12 sucks and discharges the grains, dust, and the like accumulated in the inside 26.

The grain submersion machine 1 is attached to the front part of the dryer 4, and a bucket conveyor 30 belt is stretched inside between the upper and lower pulleys, and a throwing pipe 31 is provided between the upper end and the transfer gutter 26 starting end. And a supply gutter 32 communicating with the grain collecting gutter 20 is provided in the lower part of the grain raising machine 1. An openable / closable supply gutter cover 33 is provided on the bottom surface of the supply gutter 32 to form a cleaning port. The supply gutter cover 33 is opened and closed by the operation of the solenoid 34. In addition, a submersible submersible cover 35 is provided on the bottom surface of the submersible 1 to form a cleaning port, and the sublimator cover 35 is opened and closed by a solenoid 36.

A motor 37 is provided on the upper part of the grain submersible machine 1.
With a bucket conveyor 30 belt, transfer spiral in the transfer gutter 26,
The spreader 27 and the transfer spiral in the grain collecting trough 20 are rotationally driven.

Reference numeral 39 is a moisture meter provided in the middle of the grain raising machine 1. A motor 38 is provided inside for receiving the grains dropped from the bucket conveyor 30 and crushing the grains.

Further, the operating device 6 has a box shape, and various operating switches are provided on the surface plate of the box body.
That is, the start switch 4 for starting the dryer for each work
0, stop switch 41 for stop operation, changeover switch 42 for switching between dry mode and cleaning mode, moisture setting knob 43 for setting the finishing target of grain, grain type setting knob 44, amount setting knob 45, grain A display unit 46 for alternately displaying the moisture content, the hot air temperature, and the remaining drying time is provided.

A control device 47, a cleaning control device 48 and the like are provided inside the operating device 6. Each setting knob 43, 44, 45 is a rotary switch type, and the finishing target water content is set by the operation of the moisture setting knob 43, and the burner 8 is operated by the operation position of the grain type setting knob 44 and the swelling amount setting knob 45. The generated hot air temperature is set.

When the changeover switch 42 is operated to the cut side, the drying mode is entered, and when it is operated to the entry side, the cleaning mode is entered. As shown in FIG. 3, the cleaning control device 48 has an input circuit 49 to which an operation signal of the changeover switch 42 is input, a CPU 50 which receives a signal from the input circuit 49 to perform a logical operation, and an output which receives a signal from the CPU 50. The output circuit 51 and so on. Cleaning control device 48
The control by will be described. When the changeover switch 42 is turned on and the cleaning mode is set, the motors 22 and 37 are rotationally controlled, and the air exhauster 12, the grain raising machine 1, the grain collecting trough 20, the transfer spiral in the transfer trough 26, and the diffusion board 27 are kept for a predetermined time. At the same time, the motor 11 rotates forward to operate the intake port of the burner case cover 10 in the closed state, the solenoids 25 and 29 operate, and the exhaust chamber cover 24 and the transfer gutter cover 28 operate in the open state. Remaining grain in sublimator 1,
The dust is discharged to the outside of the machine through the discharge cylinder 54 by the opening operation of the opening / closing valve 53, and the inside of the grain raising machine 1 is cleaned.

The residual particles and dust in the transfer gutter 26 are supplied into the storage chamber 2, and at the same time, the outside air is sucked into the transfer gutter 26 from the intake port, and the inside of the transfer gutter 26 is automatically cleaned.

Then, after a lapse of a predetermined time, only the motor 37 is stopped, and the motor 21 is rotation-controlled. The feeding valve 17 is driven for a predetermined time, the solenoids 34, 36, 56 are actuated to operate the supply gutter cover 33, the grain raising gutter cover 35, and the grain collecting gutter cover 55 to be in the open state, and the feeding gutter 32 and the grain raising device 1 , The respective cleaning openings of the grain collecting trough 20 are opened, and the remaining grain and dust remaining in the respective drying chambers 3, the supply trough 32, the grain raising machine 1 and the grain collecting trough 20 are discharged from the respective cleaning openings to the outside of the machine. It is automatically discharged and cleaned.

Then, after a lapse of a predetermined time, each of the motors 11 is rotated in the reverse direction, and each of the solenoids 25, 29, 34, 36, 56 is actuated to return the respective covers 10, 24, 28, 33, 35, 55 to the original state. The dryer 4 is restored and automatically controlled by the cleaning controller 48 to automatically stop the dryer 4.

The control device 47 is an AD converter for AD converting the detection values detected by the moisture meter 39 and the hot air temperature sensor 52.
The input circuit to which the converted value converted by the D converter is input, the input circuit to which the operations of the switches 40 and 41 and the setting knobs 43, 44 and 45 are input, and the various input values input from these input circuits This is a configuration in which a CPU 50 that performs a logical operation and an output circuit that receives and outputs various commands from the CPU 50 are provided.

The hot air control and moisture detection control by the control device 47 are different from each other in that the set hot air temperature set by the operation of the grain type setting knob 44 and the swelling amount setting knob 45 and the detected temperature detected by the hot air temperature sensor 52 are compared. The amount of fuel supplied to the burner 8 is controlled by the control device 47 so as to coincide with the set temperature, and the moisture meter 39 is set by the operation of the moisture setting knob 43. When the same grain moisture as the finish moisture is detected, the controller 47 automatically controls the dryer 4, and the dryer 4 is automatically stopped.

Next, the operation of the above example will be described. When starting the drying operation, the setting knobs 43, 44, 45 of the operating device 6 are operated to predetermined positions, and the changeover switch 42 is operated to the cut side to set the drying mode. Then, by operating the start switch 40 for starting the drying, the dryer 4, the burner 8 and the moisture meter 39 are operated, hot air is generated from the burner 8, and the hot air blows the grains flowing down in the drying chamber 3. Is exposed and dried.

When the moisture value of the grain detected by the moisture meter 39 reaches the same value as the finishing target value set by the moisture setting knob 43, the drying control is stopped.

Eject switch 40 when ejecting dried grains out of the machine
The opening / closing valve 53 in the discharge cylinder 54 is operated to be opened by operating the, and the grains conveyed to the upper portion by the bucket conveyor 30 are supplied into the transfer gutter 26 via the discharge cylinder 31, and further the transfer gutter 26 The dried grain is discharged from the machine through the discharge cylinder 54.

When cleaning the dryer 4, the changeover switch 42
Operate to the entry side to enter cleaning mode. When the start switch 40 that starts discharging is operated, the parts other than the feeding valve 17 are driven for a predetermined time, and the burner case
10, the burner case cover 11 is operated in the closed state, the air exhaust chamber cover 24 and the transfer gutter cover 28 are operated in the open state, and the elevator 1, the transfer gutter 26, and the air exhaust chamber 24 are automatically cleaned.

Then, after a lapse of a predetermined time, the feeding valve 17 is rotationally driven, and the rotation of the grain elevator 1, the upper and lower transfer spirals, and the spreader 27, which have been rotationally driven by the motor 37, is stopped.
The supply gutter cover 33, the grain submersion cover 35, and the grain collection gutter cover 55 are operated in an open state, and the respective cleaning ports are opened, so that the grains and dust are discharged out of the machine, and the drying chamber 3 and the grain refiner are installed. 1. The supply gutter 32 and the grain collecting gutter 20 are automatically cleaned.

Thus, by switching the dryer 4 to the automatic cleaning mode and pressing the discharge switch 40, each part of the dryer can be automatically cleaned, and the cleaning time can be shortened.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is an overall side view of a partially broken dryer, FIG. 2 is an overall front view of a partially broken dryer, FIG. 3 is a block diagram, and FIG. 4 is an overall rear view of the drier, FIG. 5 is an enlarged front view of a part of the drier, FIG. 6 is an enlarged side view of a part of the drier, and FIG. 7 is AA of FIG.
A line sectional view, FIG. 8 is an enlarged front view in which a part of the dryer is cut away. Explanation of the symbols 1 …… grain raising machine 2 …… storage room 3 …… drying room 4 …… dryer 5 …… machine frame 40 …… start switch 42 …… changeover switch 50 …… CPU

Claims (1)

[Claims] 1. A grain dryer for automatically drying grains in a grain dryer in which grains supplied from a grain submersible machine 1 are air-dried while flowing down from a storage chamber 2 to a drying chamber 3.
A cleaning mode that causes residual discharge processing in the grain drying circulation system or a dust discharge processing step of accumulated dust is set in the CPU5.
Incorporated in 0, this CPU 50 is connected to a mode selection changeover switch 42 and a cleaning start start switch 40, and after being changed to the cleaning mode by the changeover switch 42,
A drying control device for a grain dryer configured to start automatic cleaning by operating the start switch 40.