JP3089852B2 - Shutdown method for grain dryers, etc. - 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 dryer.

[0002]

2. Description of the Related Art Conventionally, when work is started or stopped in a grain dryer, a dedicated start switch or stop switch provided in an operation device is operated.

[0003]

In the case where the start-up processing and the stop processing are performed by a multi-function switch according to the display contents, the stop processing cannot be performed when the display contents are in a function switch state other than the stop state. When the drying operation is stopped, it is necessary to switch to a screen on which the stop processing can be temporarily performed and then perform the stop processing. In this case, there is a disadvantage that an operation or the like is required to stop the dryer in an emergency in the event of an accident or the like.

[0004] Further, when stopping the dryer, it is desirable from a safety standpoint to reduce the temperature around the burner after excluding unnecessary hot air from the grain as much as possible except in an emergency.

[0005]

Means for Solving the Problems The present invention for this purpose, grain
Driving unit 1 of the dryer 1 is driven or stopped.
A driving operation device 15 having a function of setting driving conditions and the like
Screen switching to display various items on the operation device 15
A display device 33 that can be freely configured, and a disconnection of the display device 33
Multi-function operation switch means 34 corresponding to each alternate display content
a, 34b, 34c, 34d, and these operation switches
An emergency switch means 35 separate from the
When the combustion is stopped, the combustion fuel supplied to the burner 3
After the feed is stopped, each part of the grain dryer 1 is controlled to stop.
And stop by emergency switch means 35
In such a case, the components of the grain dryer 1 are controlled to stop simultaneously.
The operation of the operation switch means.
Emergency stop switch means 35
Grain drying configured to give priority to emergency stop commands
Machine .

[0006]

When driving each part of the operation of the grain dryer 1, the display device 33 switches the screen and displays various items.
The operating conditions are set by operating the operation switch means corresponding to the display screen.

When the operation of the grain dryer 1 is stopped after the appropriate operation processing, the display contents necessary for stopping the operation are called up and the operation switch means is operated. Then, after the supply of the combustion fuel supplied to the burner 3 is stopped, each part of the grain dryer 1 is controlled to stop. On the other hand, when an abnormality occurs during the operation, when the emergency stop switch means 35 is operated, the processing of stopping the respective parts of the grain dryer 1 is preferentially performed regardless of the operation state of the operation switch means. Each part of the machine 1 stops at the same time.

[0008]

According to the present invention, when the multifunctional operation switch means corresponding to each switching display content of the display device 33 is used, the emergency stop switch means can be used even when emergency stop processing is required due to an abnormality or the like. By operating 35, the grain dryer 1 can be immediately stopped even if the screen content of the display device does not become the display content necessary for stopping the operation, and the operability in an emergency is improved.

When the operation of the grain dryer 1 is stopped after the drying operation, the supply of the combustion fuel to the burner 3 is stopped before the grain dryer 1 is completely stopped. For this reason, it is possible to prevent unnecessary hot air from being exposed to the grains, and at the same time, to reduce the temperature around the burner 3 and stop the burner 3, thereby improving safety.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. The figure shows a circulation type grain dryer 1 for drying grains.
1 shows a state in which a moisture sensor 2 for detecting moisture in grains and a hot air device 4 including a burner 3 for generating hot air are mounted.

The drying machine 1 is provided with a transfer trough 6 and a ceiling plate 7 having a rectangular shape which is long in the front-rear direction and in which a transfer spiral is rotatably provided above the machine wall 5, and a grain below the ceiling plate 7. A grain storage chamber 8 for storing grains is formed, and a plurality of penetration amount sensors 8 'are provided in the storage chamber 8 in the vertical direction. Grain drying chambers 9, 9 are provided below the storage chamber 8 and between the left and right exhaust chambers 10, 10 and the central blowing chamber 11, and below these drying chambers 9, 9 are grains. Are respectively rotatably supported on the shaft.

The grain collecting gutter 13 rotatably supports a transfer spiral, and is provided below each of the drying chambers 9 to communicate with each other. The burner 3 of the hot air device 4 is provided inside a burner case 14, and the burner case 14 is provided on the outer surface of the machine wall 5 on the front side of the machine wall 5 so as to correspond to the inlet side of the blower chamber 11. The burner 3, the moisture sensor 2, and the drier 1 are detachably mounted on the front wall 5 of the operation unit 15 for starting and stopping the burner 3, the dryer 1, and the drying and discharging operations. Provided.

An exhaust fan 16 is provided on the rear wall 5 on the rear side of the rear wall 5 at the center rear side of the exhaust path chamber 17 provided to communicate with the left and right exhaust chambers 10 on the rear wall 5. A fan motor 1 for rotating and driving the fan 16 is provided on the side wall 5.
9 are provided. The valve motor 20 rotationally drives the delivery valves 12, 12 via a speed reduction mechanism.

The fuel pump 21 has a fuel valve,
The fuel pump 21 sucks the fuel in the fuel tank 22 and supplies it to the burner 3 by opening and closing the fuel valve. The blower 23 is provided on the outer side of the upper plate, and the blower motor 2 for shifting is provided.
4 drives the variable-speed rotation, and the combustion air corresponding to the supplied fuel amount is blown to the burner 3 by the blower 23.

The diffusion board 25 is provided at the center in the front-rear direction of the bottom plate of the transfer gutter 6 and below the supply port for supplying the transfer kernels to the storage chamber 8, so that the kernels are uniformly diffused into the storage chamber 8. Is being reduced. The grain raising machine 26 is provided outside the front side of the front machine wall 5 and has a belt with a bucket conveyor 27 stretched inside. The upper end portion is provided with a discharge cylinder 28 between the transfer gutter 6 and the start end portion. And a paddy flow sensor 29 for detecting a grain passing therethrough is provided in the discharge tube 28, and a lower end portion is provided with a supply gutter 30 between the end portion of the grain collecting gutter 13 for communication. Let me.

The grain raising motor 31 rotates the belt with the bucket conveyor 27, the transfer spiral in the transfer trough 6, the transfer spiral in the diffusion plate 25 and the grain collecting trough 13, and the like. The moisture sensor 2 is connected to the grain raising machine 26.
The moisture sensor 2 is provided substantially at the center in the up-down direction of the bucket. The moisture sensor 32 is rotated by the transmission of an electrical measurement signal from the driving operation device 15, and the respective components of the moisture sensor 2 are rotationally driven. The conveyor 27 receives the grains falling during transport to the upper part, and detects the moisture of the ground grains while compressing and grinding the grains.

The operation device 15 has a box shape, a display device 33 of a liquid crystal type or the like for displaying various items on a surface plate of the box body, and a display device 33 of the dryer 1 below the display device 33. A plurality of operating devices 34a, 34b, 34c, 34d for selecting and setting multi-functions by operation are provided, and the functions of these operating devices 34a, 34b, 34c, 34d are displayed below the display device 33. And a configuration in which a stopping device 35 for stopping the dryer 1 is provided.
The operating devices 34a, 34b, 34c, 34d and the stopping device 35 are configured as a push button type ON-OFF switch.

The control device 36 is provided in the driving operation device 15 and inputs the paddy flow sensor 29, various digital sensor information, and the operation devices 34a, 34b, 34.
c, 34d, a digital input circuit (A) 37 for inputting the operation of the stop device 35, an analog input circuit for inputting various analog sensor information and detection values detected by the moisture sensor 2 and the hot air temperature sensor 38. 39, A / D conversion circuit 40, serial data transmission circuit 41, memory clear 4
2 is provided with a digital input circuit (B) 43 to which 2 is input. The input from these circuits 37, 39, 40, 41, and 43 is a dryer control microcomputer 44 and a memory 45 for performing arithmetic logic operation and comparison operation, etc., and an output circuit (A) 46 in accordance with a command from the dryer control microcomputer 44. The start and stop of the exhaust motor 19 are controlled through the output circuit (B) 4
7, the valve motor 20 and the grain-raising machine motor 3
1 to control the start, stop and adjustment of the fuel valve and the fuel pump 21 via an output circuit (C) 48, and to start, stop and control the blower motor 24 via an output circuit (D) 49. Adjustment control, output circuit (E) 5
0, the start and stop of the moisture motor 32 are controlled, various items are displayed on the display device 33 via a display circuit 51, a serial data receiving circuit 52 and a non-volatile memory 53.
And so on.

The stop control of the dryer 1 by the control device 36 is performed as follows. That is, during the drying operation,
To stop the drying, as shown in FIG. 2, the operation device 34d on the lower side of the operation device 15 on which the display device 33 is displayed to stop drying is turned on, and it is detected whether or not the operation device 34d is turned on by this operation ( Step 101) If NO is detected, the process returns to Step 101. If YES is detected, the fuel valve and the fuel pump 21 of the combustion system are turned off.
F (step 102), and the exhaust motor 19
And each of the motors 20, 3 other than the blower motor 24
1, 32 and the like are turned off (step 103), and it is detected whether a predetermined time set and stored in the dryer control microcomputer 44 has elapsed (step 104), and if NO is detected, the process returns to step 104, and YES Is detected, the output of the blower motor 24 is turned off (step 10).
5) Further, the output of the blower motor 19 is turned off (step 106), whereby the respective parts of the dryer 1 are controlled to stop, and the drying of the grains is stopped.

Prior to the start of each of the operations of stuffing, drying, and discharging, and after the end of each of these operations, the function display on the display device 33 in the liquid crystal form of the operation operation device 15 is displayed in liquid crystal as shown in FIG. For example, when setting the grain type and the drying mode, the function display on the display device 33 of the driving operation device 15 is displayed as shown in FIG. Further, the function display on the screen during the drying operation work may be displayed as shown in FIGS. 6 and 7,
6 is displayed on the display device 33 of the operation operation device 15 as shown in FIG. 6 (step 201), and the drying operation is started by operating the operation device 34b to start the dryer 1 and start drying (step 202). 7), a setting confirmation screen of the function display on the display device 33 of the driving operation device 15 is displayed as shown in FIG. 7 (step 203), and when the operation device 34b below the display indicates that drying is to be continued. Returning to step 203 (step 204), when the operation device 34d below the return and display is operated, the process returns to step 201 (step 204), and the operation device 3 below the start of drying and the display is displayed.
4a is operated (step 204), the outputs of the motors 19, 20, 24, 31, and 32 are turned on (step 205), and the fuel valve and the fuel pump 21 are turned on.
Is turned on (step 206), and during the drying, the function display on the screen is displayed on the display device 33 as shown in FIG. 2 (step 207). Then, the dryer 1 is stopped (step 209). When the operation device 34b below the setting confirmation is operated (step 20).
8) The setting confirmation screen of the function display on the display device 33 is
The display is the same as that shown in FIG. 7 (step 210), and the operation returns to step 210 when the operation devices 34a and 34d below the display of the start and return of drying are operated (step 2).
11) When the operation device 34b below the display indicating that drying is to be continued is operated, the process returns to step 207 (step 211).

FIGS. 11 to 14 show another embodiment, and FIG. 13 shows a driving device 54. The driving device 54 has a box shape and is provided on a surface plate of the box. The start switch 55 for starting the drying machine 1, the moisture sensor 2, the burner 3 and the like for starting, drying, and discharging operations, the stop switch 56 for stopping the operation, and the finishing target moisture of the grain are set. Moisture setting switch 57, display lamps 58 for each moisture, grain type setting switch 59 for setting the temperature of hot air generated from the burner 3, display lamps 60 for each type, filling amount setting switch 61, each for the number of stones Display lamp 62, moisture correction switch 63, timer increase / decrease switches 64, 65, buzzer stop switch 66, display section 67 for digitally displaying various display items, and monitor display lamp 68
Are provided so that the above-described various items can be set at the lighting positions of the display lamps 58, 60, and 62.

A control device 69 is provided in the driving operation device 54, and detects the paddy flow sensor 29, inputs digital sensor information, inputs a check mode 66 ', and switches 55, 56, 57, 59, 61, 63, 64, 65,
A digital input circuit (A) 70 to which the operation of 66 is input;
An analog input circuit 71, an analog-to-digital conversion circuit 72, a serial data transmission circuit 73, and a memory clear 74, to which analog sensor information is input and detection values detected by the moisture sensor 2 and the hot air temperature sensor 38 are input. Digital input circuit (B) 75, these circuits 70, 71, 72,
A dryer control microcomputer 76 and a memory 77 for performing arithmetic logic operation, comparison operation, and the like on inputs from 73 and 75, and an output circuit (A) 7 in accordance with instructions from the dryer control microcomputer 76.
8 to control the start and stop of each of the motors 19, 20, 31 and the like, and through an output circuit (B) 79,
The start and stop of the fuel pump 21 and the blower motor 24 are controlled, the start and stop of the moisture motor 32 are controlled via an output circuit (C) 80, and displayed on the display unit 67 via a display circuit 81. The operation of a buzzer 83 is controlled via a circuit (D) 82, and a serial data receiving circuit 84, a nonvolatile memory 85, and the like are provided.

Each of the motors 19, 20, 31 having a large current value is provided with a current transformer 86 for detecting a current value, and the current value detected by each of the current transformers 86 is provided. Is input from the rectifier / smoothing circuit 87 of the current detection circuit 86 'to the dryer control microcomputer 76 via the amplifier circuit 88, the analog input circuit 71, and the A / D conversion circuit 72.

The current transformers 86 for detecting the current values may be provided in each of the motors 24 and 32 having a small current value. The check of the driving operation device 54 is performed as follows. That is, the input of the check mode 66 'is read (step 301), and it is detected whether or not there is an input (step 302).
In this configuration, the process of detecting the open phases of 9, 20, and 31 is deleted (step 303), and the input of each of the start switches 55 is awaited (step 304). When NO is detected in step 302, the process proceeds to step 304.

Thus, when the operation control device 54 is checked, the motors 19, 20, 3 are actually used in the normal operation mode including the process of detecting an open phase.
1 or a current cannot flow through the current transformer 86 with a pseudo load, the operation could not be carried out due to phase loss. Therefore, the check could not be performed. If it is a check other than the phase relation, the operation check can be performed without the motors 19, 20, 31 and the pseudo load, and when the current cannot be detected due to the failure of the current transformer 86 or the like. However, even in the emergency mode, the check mode 66 '
It is now possible to drive with

The operation of the above embodiment will be described below. For example, multi-function settings such as a target moisture content, a grain type, and a drying mode displayed on the display device 33 of the operation operation device 15 are selected and set by operating the operation devices 34a, 34b, 34c, 34d, and the display. By operating the lower operating device 34b indicated as drying on the device 33, each part of the grain dryer 1, the burner 3 of the hot air device 4, the moisture sensor 2
Are started, and the set hot air is generated from the burner 3. The hot air passes from the blower chamber 11 to the respective grain drying chambers 9, 9, and passes through the respective exhaust chambers 10, 10 and the exhaust path chamber 17. Exhaust fan 16
Is sucked and exhausted.

The grains stored in the grain storage chamber 8 are exposed to the hot air while flowing down from the storage chamber 8 through the drying chambers 9, 9, and are dried. It is fed to the lower part, flows down and is fed from the grain collecting gutter 13 via the supply gutter 30 into the grain raising machine 26 by the lower transfer spiral, and is conveyed to the upper part by the bucket conveyor 27 and conveyed through the ejection tube 28. It is supplied into the gutter 6, transferred and supplied from the transfer gutter 6 onto the diffusion board 25 by the upper transfer spiral, and is uniformly diffused and reduced into the storage chamber 8 by the diffusion board 25 and circulated and dried.

When the grain moisture detected by the moisture sensor 2 is the same as the grain target moisture set, the completion of the drying is detected, and the controller 36 automatically controls the drying to control the drying. The machine 1 is automatically stopped, and the drying of the grain is stopped. When an emergency occurs during this drying operation and the dryer 1 is to be stopped urgently, the operation device 1
5 by operating the stopping device 35 of the drying machine 1.
Are stopped and the drying of the grain is stopped. When the drying machine 1 is normally stopped during the drying operation, the burner is operated by operating the lower operation device 34d on the display device 33 of the operation device 15 which indicates that the drying is stopped. 3 is immediately stopped and the rotational drive of each part of the dryer 1 other than the blower 23 that blows the combustion air and the blower 16 that sucks and exhausts the hot air is immediately stopped and controlled. The output to the blower motor 24 for rotating the blower 23 and the output to the blower motor 19 for rotating the blower 16 is controlled to be stopped after a predetermined time, and the blower 23 and the blower 16 are controlled to be stopped after a predetermined time. The respective parts of the dryer 1 are all controlled to stop, and the drying of the grain is stopped.

[Brief description of the drawings]

 FIG. 1 shows an embodiment of the present invention.

FIG. 1 is a block diagram

FIG. 2 is an enlarged front view of the driving operation device, which is partially broken.

FIG. 3 is an enlarged front view of the driving operation device, which can be partially broken;

FIG. 4 is an enlarged front view showing a partially broken operation of the driving operation device.

FIG. 5 is a flowchart.

FIG. 6 is an enlarged front view showing a partially broken operation of the driving operation device.

FIG. 7 is an enlarged front view showing a partially broken operation of the driving operation device.

FIG. 8 is a flowchart.

FIG. 9 is a partially broken whole side view of the grain dryer.

FIG. 10 is an enlarged sectional view taken along line AA of FIG. 9;

FIG. 11 is a block diagram showing another embodiment.

FIG. 12 is a diagram showing another embodiment, and a current detection block diagram;

FIG. 13 is a view showing another embodiment, and is an enlarged front view of the driving operation device, which can be partially broken.

FIG. 14 is a diagram showing another embodiment, and is a flowchart.

[Explanation of symbols]

 4 Hot-air device 6 Grain storage room 9 Grain drying room 15 Operation / operation device 16 Exhaust device 19 Exhaust motor 23 Blower 24 Blower motor 33 Display device 34a Operation device 34b Operation device 34c Operation device 34d Operation device 35 Stop device

Claims (1)

(57) [Claims] 1. An operation of each part of the grain dryer 1
Equipped with functions to set the operating conditions, etc., while performing stop processing.
The driving operation device 15 and various items are displayed on the driving operation device 15.
A display device 33 configured to be switchable between screens to show
Multi-function operation corresponding to switching display contents of the display device 33
Switch means 34a, 34b, 34c, 34d, and
And emergency switch means 35 different from the operation switch means.
Equipped, when the operation switch means to stop, burner 3
After stopping the supply of combustion fuel to be supplied, each of the grain dryers 1
And the emergency switch
At the time of the stop by the stage 35, each part of the grain dryer 1 is stopped at the same time.
Stop control, and the operation switch
Emergency stop switch in response to the normal stop command
Configuration to give priority to the emergency stop command from the
Grain dryer .