JPH05256578A - Displaying system for grain drying time of grain drier - Google Patents

Abstract

PURPOSE:To report drying end time quickly by calculating drying forecast time based on an initial detection value of the moisture of grain to shorten detection time when the drying forecast time is calculated and displayed based on a difference between an average detection value and a target value of the moisture of the grain and a grain dry reduction rate. CONSTITUTION:A grain drier 1 has a moisture sensor 2 to detect the moisture of grain and a burner 3 to generate a hot air. A grain storage chamber 7 and a grain drying chamber 8 are formed from top to bottom in a machine frame 4. Drying forecast time is calculated and displayed based on a moisture difference between an average grain moisture as detected with the moisture sensor 2 a plurality of times and a finish target moisture and a grain dry reduction rate set. In this case, when the drying forecast time which is detected individually from a plurality of detections of initial moisture is on the shortening side, the drying forecast time during a display is controlled by a subtraction correction. On the other hand, when it is on the extension side, the drying forecast time during the display is not subjected to a control by addition correction. Then, the drying forecast time is calculated again by the average grain moisture detected and displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain drying time display system for a grain dryer.

[0002]

2. Description of the Related Art Conventionally, a grain is fed from a grain storage chamber to a grain drying chamber and is circulated while being fed out, and while hot air passes through the drying chamber, it is exposed to the hot air and dried. , The moisture content sensor detects a plurality of grain moisture components MA for a plurality of times during the cycle drying, and the average grain moisture component MS is calculated from the grain moisture components MA detected a plurality of times. When the moisture MS becomes the grain moisture once, and the finishing target moisture ML set by the detected average grain moisture MS or less is detected a plurality of times, it is determined that the drying of the grain has ended, and the drying of the grain is automatically stopped. When this grain is dried, the detected average grain moisture MS, the detected average grain moisture MS and the set finishing target moisture M
The grain is dried while alternately displaying both the moisture difference from L and the set drying loss rate S of the grain and the estimated drying time TA until the end of drying.

The expected drying time TA at the start of drying is calculated from the grain moisture MA detected multiple times and the average grain moisture MS.
Was calculated, and the moisture difference between the detected average grain moisture MS and the set finishing target moisture ML, and the scheduled drying time TA from the set grain drying loss rate S to the end of drying were calculated and displayed.

[0004]

The grains stored in the grain storage chamber of the grain dryer are fed from this storage chamber to the grain drying chamber and are circulated while flowing down, while hot air passes through the drying chamber. By doing so, while being exposed to the hot air and being dried, a part of the grains in the circulating drying has a moisture sensor in which moisture moisture MA is detected a plurality of times, and the average grain moisture MA is detected multiple times. The grain moisture MS is calculated, and the detected average grain moisture MS becomes the detected grain moisture once, and when the detected average grain moisture MS is detected a predetermined number of times below the finishing target moisture ML set, the grain is detected. Is detected to have ended, the dryer is automatically stopped and the drying of the grain is stopped.

At the time of this grain drying operation, it is calculated from the detected average grain moisture MS, the moisture difference between the detected average grain moisture MS and the set finishing target moisture ML, and the set grain drying rate S. The grain is dried while alternately displaying both the scheduled drying time TA until the end of drying. Further, the calculation of the expected drying time TA at the start of the drying operation is performed by calculating the average grain moisture MS from the grain moisture MA detected multiple times, and calculating the difference in moisture between the detected average grain moisture MS and the set finish target moisture ML. And the scheduled drying time TA from the set grain drying rate S to the end of grain drying is calculated and displayed.

The expected drying time TA at the start of the drying operation is calculated from the grain moisture MA detected a plurality of times and the average grain moisture M.
Although it took a long time to display S by calculating S and using the calculated average grain moisture MS, this is intended to be displayed as soon as possible.

[0007]

According to the present invention, a grain is fed from an upper grain storage chamber 7 to a lower grain drying chamber 8 and is allowed to flow down while being exposed to hot air to be dried and the grain being dried. Grain moisture is detected a plurality of times by the moisture sensor 2 and the average value is calculated. The moisture difference between the detected average grain moisture MS and the set finishing target moisture ML, and the set grain dryness reduction rate S to the end of drying. In the grain dryer that calculates and displays the estimated drying time TA of the above, the difference in moisture between the initially detected grain moisture MA and the set finishing target moisture ML that are detected multiple times in the initial stage, and the set grain dryness rate The expected drying time TA calculated from S is displayed, and when the expected drying time TA individually detected from a plurality of detections of the initial moisture is on the shortening side, the expected drying time TA being displayed is subtracted and corrected and controlled. In addition, if it is on the extension side, the drying schedule displayed It is characterized in that it is controlled not to perform addition correction of the inter-TA, and the estimated drying time TA is calculated and displayed again with the detected average grain moisture MS calculated from the initial grain moisture MA multiple times. The grain drying time display method is used.

[0008]

The grain stored in the grain storage chamber 7 of the grain dryer is fed from the storage chamber 7 to the grain drying chamber 8 and is circulated while flowing down, while hot air blows through the drying chamber 8. While passing through and being dried by passing through this hot air, the moisture sensor 2 detects the grain moisture MA a plurality of times in some of the grains in the circulating drying, and the grain moisture MA in the plurality of detections is performed. The average grain moisture MS is calculated from the detected average grain moisture M
S becomes one detection grain moisture, and this detection grain moisture MS
A predetermined number of times below the finishing target moisture ML set by
For example, when it is detected three times, it is detected that the drying of the grain has been completed, the dryer is automatically stopped, and the drying of the grain is stopped.

At the time of this grain drying operation, it is calculated from the detected average grain moisture MS, the difference in moisture between the detected average grain moisture MS and the set finishing target moisture ML, and the set grain drying rate S. The grain is dried while alternately displaying both the scheduled drying time TA until the end of drying which is performed on the display unit. In addition, the calculation of the expected drying time TA at the beginning of the drying operation is performed by calculating the moisture difference between the first detected grain moisture MA and the set finishing target moisture ML detected a plurality of times, for example, three times in the initial stage, and the grain drying. The expected drying time TA from the reduction rate S to the end of drying is calculated, and both the detected expected drying time TA and the first detected grain moisture MA are displayed alternately.

[0010] This second drying scheduled time TA calculated from the moisture difference between the second detected grain moisture MA and the set finishing target moisture ML and the grain drying loss rate S, and the scheduled drying time in the above display. When TA is different and it is detected that the side is the shortening side, the minus side is displayed after being subjected to subtraction correction control from the drying scheduled time TA being displayed. Further, when it is detected that it is the + side which is the extension side, this + time amount is not added to the drying schedule time TA being displayed, and the drying schedule time TA being displayed during the first detection is continuously displayed. .

When the detection of the grain moisture MA is repeated three times, which is a plurality of times in the initial stage, the average grain moisture MS is calculated from the three detected grain moisture MA, and the detected average grain moisture MS is calculated.
The planned drying time TA is calculated again from the moisture difference between the target finishing moisture ML and the set finishing target moisture ML, and the set grain drying loss rate S, and the detected drying scheduled time TA is different from the currently displayed scheduled drying time TA. Then, the display is switched and displayed for the three times of the predicted drying time TA detected by the average grain moisture MS of the three times. In the case of the same, the scheduled drying time TA being displayed is continuously displayed. After that, the grain is dried while the detection drying scheduled time TA detected based on the detected average grain moisture MS is displayed.

[0012]

According to the present invention, in the initial stage of grain drying, the estimated drying time TA until the end of grain drying is calculated based on the first detected grain moisture MA detected by the moisture sensor 2. The time until the detection is shortened, the operator can be informed of the end time of the drying work quickly, and the plan of the hulling work, which is the post-work, can be planned quickly.

[0013]

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.
The figure shows a state in which a moisture sensor 2 for detecting moisture in the grain, a burner 3 for generating hot air, and the like are attached. The dryer 1 has a rectangular shape that is long in the front-rear direction, and the upper part of the machine wall 4 is
A transfer trough 5 and a ceiling plate 6 in which a transfer spiral is rotatably installed are provided, and a grain storage chamber 7 for storing grains is formed below the ceiling plate 6.

The grain drying chambers 8 and 8 are provided below the storage chamber 7 between the left and right air exhaust chambers 9 and 9 and the central air blowing chamber 10, and below the drying chambers 8 and 8. A feeding valve 11 for feeding and flowing down the grains is rotatably supported. The grain collecting trough 12 rotatably supports a transfer spiral and is provided below the respective drying chambers 8 and 8 to communicate with each other.

The burner 3 is installed inside a burner case 13, and the burner case 13 is detachably attached to the outer surface of the machine wall 4 so as to correspond to the inlet side of the blower chamber 10 on the front side of the machine wall 4. The burner 3, the moisture sensor 2 and the dryer 1 are detachably provided on the machine wall 4 on the front side for starting and stopping the burner 3, the dryer 1 and the drying and discharging operations. ..

The exhaust fan 15 is an exhaust passage chamber 16 provided on the rear side machine wall 4 so as to communicate with the left and right exhaust chambers 9, 9.
An exhaust fan motor 18 for rotating and driving the exhaust fan 15 is provided on the machine wall 4 on the rear side. Reference numeral 19 denotes a valve motor, which is the feeding valve 1
1 and 11 are rotationally driven via a reduction mechanism.

The fuel pump 20 has a fuel valve,
The burner case 13 is provided outside the lower plate, and by opening and closing the fuel valve, the fuel in the fuel tank 21 is sucked by the fuel pump 20 and supplied to the burner 3. The blower 22 is provided on the outer side of the upper plate, and the blower motor 2 for shifting is used.
3 is driven to rotate at variable speed, and combustion air corresponding to the supplied fuel amount is blown to the burner 3 by the blower 22.

The diffusion plate 24 is provided at the center of the bottom plate of the transfer gutter 5 in the front-rear direction, below the supply port for supplying the transfer grains to the storage chamber 7, and evenly diffusing the grains into the storage chamber 7. I'm giving back. The grain-sustaining machine 25 is provided outside the front side of the machine wall 4 and has a belt with a bucket conveyor 26 stretched inside. It is provided to communicate with each other, and the lower end is the grain collecting gutter 12
A supply gutter 28 is provided between the terminal portion and the end portion to communicate with each other.

29 is a grain elevator motor, which rotationally drives the belt with the bucket conveyor 26, the transfer spiral in the transfer gutter 5, the diffusion plate 24, the moving spiral in the grain collecting gutter 12, and the like. .. The moisture sensor 2 is the grain raising machine 2.
The moisture sensor 2 is provided substantially at the center of the vertical direction of the water sensor 5.
By transmitting an electrical measurement signal from the operating device 14,
The moisture motor 30 rotates and each part of the moisture sensor 2 is rotationally driven, and receives the grains that are falling while being conveyed to the upper portion by the bucket conveyor 26, and detects the grains by the feeding roll 31 one by one. The grains are supplied to the rolls 32, 32, and the grains between the detection rolls 32, 32 are crushed by, for example, 32 grains, while the moisture of the pulverized grains is detected to calculate the average value of the grain moisture, The 32 grains of moisture MA are detected three times, and the average value of each is calculated.
An average value is calculated from the once detected grain moisture MA, and this is displayed as one detected average grain moisture MS.

The operating device 14 has a box shape, and the dryer 1, the moisture sensor 2, the burner 3 and the like are put on the surface plate of the box body, and the operation is started for each operation of drying and discharging. Start switch 33, stop switch 3 for stopping operation
4, buzzer stop switch 35, timer increase / decrease switch 3
6, 37, a moisture setting knob 38 for setting the finishing target moisture of the grain by the operation position, and a grain type setting knob 3 for setting the hot air temperature generated from the burner 3 by the operation position
9. A swelling amount setting scoop 40, a desiccation ratio setting scoop 41 for setting the drying loss ratio of grain according to the operation position, a display section 42 for digitally displaying various display items, a monitor display, and the like are provided.

The control device 43 is provided in the operating device 14, and the detection of each digital sensor is input to the control microcomputer 44 through the digital input circuit, and the switches 33, 34, 35, 36, 37, The operation of each setting knob 38, 39, 40, 41 is input to the control microcomputer 44 via the digital input circuit 45, and the moisture sensor 2 and the hot air temperature sensor 46 detect the analog input circuit 47 and A-. The information is input to the control microcomputer 44 via the D conversion circuit 48, and the communication information is input to the control microcomputer 44 via the serial data receiving circuit.

The control microcomputer 44 is
In response to a command from the control microcomputer 44, the motors 18, 19,
29 is controlled to start and stop. The fuel valve, the fuel pump 20, and the blower motor 23 are controlled to start, stop, and adjust through the output circuits B and 50. The water motor 30 is controlled to start and stop through the output circuits C and 51. Various items are displayed on the display unit 42 via the display output circuit 52. It also has a serial data transmission circuit for transmitting communication information. The control microcomputer 44 has a memory 53 and stores a non-volatile memory.

The grain water content display control and the grain drying control by the control unit 43 are configured as follows.
That is, as shown in FIG. 2, the start switch 33 for starting the drying work is turned on (step 101), and if NO, the process returns to (step 101) again, and if YES, the motors 18, 19, 29 for the drying work. , 30 are turned on (step 102), the fuel valve of the combustion system, the fuel pump 20, and the blower motor 23 are turned on (step 103), the initial moisture detection of the grain is started, and the moisture sensor is detected. The water content of 32 grains for each grain detected by 2 is detected, and the microcomputer 4 for control is detected.
4 and the average grain moisture M of 32 grains is input by this input.
A is calculated, and this detected grain moisture MA is displayed as the first detected grain moisture MA (step 104). For example, the 32 detected grain moistures MA are repeated 3 times, the average value of these 3 times is calculated to detect the average grain moisture MS, and the detected average grain moisture MS is displayed once. When the detected grain moisture MS is detected to be equal to or less than the finishing target moisture set by operating the moisture setting scoop 38 three times, it is controlled that the drying is completed.

The moisture difference between the detected grain moisture MA and the finishing target moisture ML set by operating the moisture setting drip 38, and the grain drying loss set by operating the drying loss setting drip 41. With the constant A set based on S, the expected drying time TA, which is the remaining time until the end of drying, is calculated and displayed,
Scheduled drying time TA = [detected grain moisture MA−setting target moisture ML × constant A] (step 105), and after a predetermined time has elapsed, the second grain moisture MA is detected and displayed (step 106), The second scheduled drying time TA is calculated based on the second detected grain moisture MA and the like, and the detected second scheduled drying time TA is calculated from the displayed first scheduled drying time TA. When the negative side, which is the shortening side, is detected, subtraction correction processing is performed for this minus time, and the corrected drying expected time TA is displayed, and the second drying expected time TA is displayed. When it is detected that it is the + side which is the extension side from the scheduled drying time TA, this + time is not subjected to the addition correction process, and the scheduled drying time TA for the first time is continuously displayed (step 107), and the predetermined time is reached. The third time passed Grain moisture MA is detected (step 108), whether the detected number N of times is a predetermined number of times (3 times) has been detected (step 109), when it is detected NO, and
Returning to (step 108), if YES is detected, the average grain moisture MS of N times (three times) of the predetermined number is calculated, and the detected average grain moisture MS of three times is displayed (step 110). ), The estimated drying time TA is calculated on the basis of the detected average grain moisture MS of three times and the like, and the detected estimated drying time TA is displayed (step 111).

In addition to the above, the control is performed as shown in FIG. The average grain moisture MS is detected by the moisture sensor 2 (step 201), and the detected average grain moisture MS is equal to or higher than the detectable upper limit value (step 202). If NO is detected, the detected average grain moisture MS is detected. Scheduled drying time T based on MS etc.
A is calculated, and this estimated drying time TA is displayed (step 203).
The subtraction process of A is performed and displayed (step 20).
4). If (YES in step 202) is detected,
The expected drying time TA is calculated based on the upper limit moisture value, and the detected expected drying time TA is displayed (step 20).
5) It is detected whether a predetermined time has passed (step 20).
6) If YES is detected, the process returns to (step 201), and if NO is detected, the process returns to (step 206).
As a result, even when the detected grain moisture MS is equal to or higher than the upper limit value, it is possible to detect the estimated drying time TA as a guide.

In addition, the control device 43 has the following functions. By operating each of the setting scoops 39 and 40, the set hot air temperature and the hot air temperature generated by the burner 3 detected by the hot air temperature sensor 46 are compared, and if they are different, the set hot air temperature is determined. The number of times the fuel valve is opened and closed is controlled so that the temperature becomes the same, and the amount of fuel sucked from the fuel tank 21 by the fuel pump 20 is controlled to increase or decrease.

The operation of the above embodiment will be described below. Setting knobs 38, 39, 40, 41 of the operating device 14
Is operated to a predetermined position, and the start switch 33 for starting the drying operation is operated to start each part of the grain dryer 1, the burner 3, the moisture sensor 2, etc., and hot air is generated from the burner 3, The hot air passes through the grain drying chambers 8, 8 from the air blowing chamber 10, passes through the air exhaust chambers 9, 9 and the air exhaust passage chamber 16, and is sucked and exhausted by the air exhaust unit 15.

The grains stored in the grain storage chamber 7 are dried by being exposed to the hot air while flowing down from the storage chamber 7 through the drying chambers 8 and 8 and then fed by the feeding valves 11 and 11. It is fed to the lower part and flows down, and is transferred from the grain collecting gutter 12 through the supply gutter 28 and into the grain raising machine 25 by the lower transfer spiral, and is conveyed to the upper part by the bucket conveyor 26 and transferred through the throwing pipe 27. It is supplied into the gutter 5, and is transferred and supplied from the transfer gutter 5 onto the diffusion plate 24 by an upper transfer spiral, and is uniformly diffused and reduced into the storage chamber 7 by the diffusion plate 24 and circulated and dried.

When the average grain moisture MS detected by the moisture sensor 2 is the same as the finish target moisture ML set by operating the moisture setting scoop 38, the grain moisture is detected three times, and the drying is completed. When it is detected, the controller 43 automatically controls the dryer 1 to automatically stop and the drying of the grain is stopped. During this drying operation, the detected average grain moisture M
Both S and the expected drying time TA until the end of drying calculated from the water content difference between the detected grain moisture MS and the set finishing target moisture ML and the set constant A based on the set grain drying rate S However, the grains are dried while being alternately displayed on the display unit 42.

The expected drying time TA at the beginning of the drying operation is calculated a plurality of times in the initial stage, for example, 32 grains are detected three times in the first time, 32 grains of the detected grain moisture MA and the set finish target moisture. The scheduled drying time TA from the set constant A based on the moisture difference from ML and the grain drying loss rate S to the end of drying is calculated, and both the detected drying scheduled time TA and the first-time detected grain moisture MA are calculated. Are displayed alternately.

The set constant A based on the difference in water between the second detected grain moisture MA and the set grain moisture ML and the grain drying rate S.
The expected drying time TA from the completion of drying to the end of drying is calculated, and the second expected detection drying time TA and the expected drying time TA being displayed are different, and are detected as the shortening side-side. Then, this minus-hour portion is displayed after being subjected to subtraction correction control from the drying estimated time TA being displayed. Further, when it is detected that it is the + side which is the extension side, this + time amount is not added to the drying schedule time TA being displayed, and the drying schedule time TA being displayed during the first detection is continuously displayed. .

When the grain moisture MA is detected three times, which is a plurality of times in the initial stage, the average grain moisture MS is calculated from the three detected grain moisture MA, and the detected grain moisture MS and the set finish are set. Based on the moisture difference from the target moisture ML and the set drying loss rate S, the planned drying time TA from the set constant A to the end of drying is calculated, and the detected drying planned time TA and the currently displayed planned drying time TA are calculated. If they are different, the display is switched and controlled to the detection drying scheduled time TA detected by the average grain moisture MS of three times. In the case of the same, the scheduled drying time TA being displayed is continuously displayed. After that, the grain is dried while the detection drying scheduled time TA detected based on the detected average grain moisture MS is displayed.

[Brief description of drawings]

 The figure shows an embodiment of the invention.

FIG. 1 is a block diagram.

FIG. 2 is a flowchart.

FIG. 3 is a flowchart.

FIG. 4 is an overall side view in which a grain dryer is 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 partially broken.

FIG. 7 is an enlarged side sectional view of the moisture sensor.

FIG. 8 is an enlarged rear view of the moisture sensor.

[Explanation of symbols]

 2 Moisture sensor 7 Grain storage room 8 Grain drying room

Claims (1)

[Claims] 1. The grain sensor is dried by being exposed to hot air while being drawn out and flowing from an upper grain storage chamber 7 to a lower grain drying chamber 8, and a moisture sensor 2 is used to measure the moisture content of the grain during drying. The difference in water between the detected average grain moisture MS, which has been detected twice, and the average value of which has been calculated, and the finish target moisture ML, which has been set, and the scheduled drying time TA from the set grain drying loss rate S to the end of drying TA
In the grain dryer for calculating and displaying, initially, the moisture difference between the first detected grain moisture MA that is detected a plurality of times and the set finishing target moisture ML, and the set grain dryness reduction ratio S are calculated. When the expected drying time TA is displayed and the expected drying time TA individually detected from the multiple detections of the initial moisture is on the shortening side, the expected drying time TA being displayed is subjected to subtraction correction control and extended. In this case, the control is performed so as not to perform the addition correction of the expected drying time TA being displayed, and the expected drying time TA is again calculated by the detected average grain moisture MS calculated from the initial grain moisture MA plural times. A grain drying time display method characterized by being calculated and displayed.