JP2010197023A - Display screen for grain drier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly grasp a state of grain during stopping whether the stopping is based upon a set moisture value or due to malfunction in a grain drier. <P>SOLUTION: In a display screen (30) of a grain drier displaying a drying state or drying conditions, either when a set moisture value is reached and drying work is stopped or when the drying work is stopped before reaching the set moisture value due to malfunction, a grain moisture value in the point of time of stopping at drying stopping, the stopping time in the point time of stopping at the drying stopping, and a grain amount at the time point of stopping are displayed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display screen that displays a drying state and drying conditions of a grain dryer.

  Patent Document 1 discloses a display screen that can determine whether the burner stops due to a malfunction or stops during combustion control.

JP-A-8-35773

  In a grain dryer, whether it is a stop based on a set moisture value or an abnormal stop, it is very important for the subsequent processing to grasp the state of the grain at the time of the stop.

  According to the first aspect of the invention, in the display screen (30) of the grain dryer that displays the drying state and drying conditions, when the set moisture value is reached and the drying operation is stopped, or until the set moisture value is reached. In any case where the drying operation is stopped due to an abnormality, the grain moisture value at the time when the drying operation is stopped is displayed on the display screen (30).

The invention described in claim 2 is characterized in that, in the invention described in claim 1, the stop time at the time when the drying is stopped and the grain amount at the time of the stop are displayed.
The invention according to claim 3 is the invention according to claim 1 or claim 2, wherein when the drying operation is stopped upon reaching the set moisture value, or the drying operation is stopped due to an abnormality until the set moisture value is reached. In any case, the mode of the display screen (30) at the time when the drying is stopped is made common, and the display of whether the drying operation is stopped or abnormally stopped based on the set moisture value is distinguished.

  According to the first aspect of the present invention, when the combustion burner 4 is stopped due to an abnormality, it is particularly important to grasp the grain moisture value at the time of stopping, and if the grain moisture value is high during drying. If the cereal is deteriorated if it is stopped and left as it is, the grain moisture value at the time of the abnormal stop is promptly displayed together with the abnormal display, so that appropriate post-processing can be performed.

  According to the second aspect of the present invention, it is possible to determine the state of the grain after the stop by displaying the stop time, for example, the hulling operation from the stop time displayed when stopping at the set moisture value The appropriate start time can be estimated. Moreover, the time required for the hulling operation can be estimated in advance by displaying the grain amount at the time of finishing.

  According to the third aspect of the present invention, it is possible to quickly grasp the reason for stopping when stopped and the state of the grain when stopped.

Illustration explaining the inside of the grain dryer as seen from the side Diagram explaining the inside of the grain dryer as seen from the front Operation panel Figure showing the display screen Figure showing the display screen Figure showing the display screen Figure showing the display screen Table showing the amount of grain and the number of moisture measurements Table showing measured moisture value data for each grain layer Graph showing the moisture unevenness of each grain layer Graph showing the moisture unevenness of each grain layer Graph showing the moisture unevenness of each grain layer Figure showing the display screen when the drying operation is stopped Figure showing the display screen when the drying operation is stopped Diagram showing moisture distribution of sample grain

  FIG. 1 is a diagram for explaining the inside of the grain dryer as viewed from the side. The ceiling side of the box body 1 is provided with an upper spiral 3 for transporting grains grained by the elevator 2 into the box body 1. The rear side includes an exhaust fan 7 that sucks hot air in the box 1. The elevator 2 is provided with a moisture meter 9 for detecting the moisture of the grain and a grain discharge cylinder 20 for discharging the grain in the box 1 to the outside of the machine. The operation panel 6 includes a control unit (not shown) that controls the drying operation.

In the box 1, a storage chamber 10 is provided in the upper stage, and a drying chamber 11 is provided in the lower stage.
In the upper part of the storage chamber 10, there are provided a diffusion blade 12 for diffusing the grain conveyed by the upper spiral 3 into the storage chamber 10 and a tension sensor 19 for automatically detecting the amount of grain stuck in the storage chamber 10. ing.

  The drying chamber 11 includes a hot air chamber 13 through which hot air generated by the combustion burner 4 passes, a flow-down passage 14 through which grains flow from the storage chamber 10, and an exhaust chamber 15 that receives the suction action of the exhaust fan 7. The A rotary valve 16 is provided at the lower end portion of the flow-down passage 14 to feed the grain flowing down the flow-down passage 14 by a predetermined amount. A lower spiral 17 that conveys the grain fed out by the rotary valve 16 to the elevator 2 below the rotary valve 16. Is provided.

Next, the operation panel 6 will be described.
On the operation panel surface of the operation panel 6, an LCD display unit 30 made of liquid crystal, an LED display unit 31 called a so-called seven segment, a tension switch 32 that is operated when grain is stretched, and an exhaust fan 7 are driven. A ventilation switch 33 that performs ventilation work, a drying switch 34 that drives the combustion burner 4 to perform drying work, a discharge switch 35 that discharges grains in the grain dryer to the outside after the drying work, a tension / ventilation / An operation switch including a stop switch 36 for stopping various operations of drying and discharging and an emergency stop switch 37 for stopping the dryer in an emergency are provided. 46 is an indicator showing the contents of the numerical value of the LED display unit 31.

Next, the operation condition setting operation on the LCD display unit 30 will be described.
FIG. 4 is a setting screen for operating conditions on the LCD display unit 30, in which an overgrown grain amount setting switch 40, a finishing moisture value setting switch 41, a drying speed setting switch 42, a drying mode switch 43, and a grain type setting switch 44 are displayed. . Then, when any of the setting switches 40, 41, 42, 43, 44 is touched, a detailed setting screen for each operating condition is displayed as shown in FIGS. 5 to 7, for example, in the case of the stop moisture setting screen of FIG. The desired moisture value is input.

Next, an outline of the drying process will be described.
When the power is turned on, the LCD display unit 30 displays a setting screen for operating conditions shown in FIG. 4, and the operator can set the cereal amount setting switch 40, the finishing moisture value setting switch 41, the drying speed switch 42, and the drying mode switch 43. The grain type setting switch 44 is sequentially operated to switch to the detailed setting screen and set the amount of cereal grain, the finishing moisture value, the drying speed, the drying mode, and the grain type. In addition, about the amount of overhanging grain, even if it does not set manually at this time, it is automatically detected and input by the below-mentioned overhang amount sensor 19.

  When the grain is stretched, the tension switch 32 is pressed to drive the tension drive means of the elevator 2, the upper spiral 3 and the diffusion blade 12, and the grain is stretched into the storage chamber 10. When the tensioning operation is completed, the drive is stopped by pressing the stop switch 36. When the drying switch 34 is pressed, the combustion burner 4 starts to be driven, and the circulation driving means including the lower spiral 17, the rotary valve 16 and the above-described tension driving means starts to drive, and the grain is stored in the drying chamber 11 and stored. The drying operation is performed up to the set moisture value while circulating through the chamber 10.

  During the drying operation, the LCD display unit 30 is not shown, but the drying such as the grain moisture value measured by the moisture meter 9 at every set time during the drying operation, the hot air temperature, and the remaining drying time until the set moisture value is reached. Driving information is displayed. During this time, the LED display unit 31 sequentially displays the grain moisture value, the hot air temperature and the drying information of the remaining drying time while the indicator 45 is lit.

  When the measured moisture value of the grain reaches the set finish moisture value (for example, 14.5%), the combustion burner 4 is stopped, and after the so-called post-purge process in which the exhaust fan 7 is driven for a predetermined time, it is completely stopped. .

  When discharging the grain in the grain dryer, when the discharge switch 35 is pressed, the circulation drive means starts to drive, and the grain in the storage chamber 10 is discharged from the flow path 14 through the rotary valve 16, the lower spiral 17, and the elevator 2. 20 is discharged.

Next, the content of the graph display of the moisture unevenness state of the grain layer at the start of the drying operation will be described.
When the amount of overhanging grain is detected by the overhanging grain amount detection sensor 19 or the manual overhang amount setting switch 40 and is input to the control unit, moisture measurement according to the amount of overhanging grain (LV1 to LV12) is performed as shown in FIG. The number of times k is set every set time within the circulation time t until the amount of the cereal grains circulates once after the start of drying. In addition, the time t which circulates once is calculated by the control unit from the amount of cereal grains, and the moisture measurement is performed every time the circulation time t is equally divided by the number of times of measurement k. For example, as shown in FIG. 8, when the tension level is LV10 and the grain size is 6000 kg, it takes 48 minutes to circulate once, and the number of measurements is 12 times, that is, moisture is measured every 4 minutes. It is.

  When the drying switch 34 is pressed, the combustion burner 4 starts to burn and the grain starts to circulate in the box 1. Then, the moisture content is measured with the moisture meter 9 for the set number of times after the start of drying until one circulation. At that time, the screen displays that moisture measurement is in progress at the beginning of drying.

  In addition, in one water | moisture-content measurement, as shown in FIG. 9, 32 grains | grains are measured, and the representative moisture value (m) which is the average moisture value is detected each time. When the circulation is completed once from the start of drying, each representative moisture value m measured for each grain layer (LV1 to LV10) is displayed on the LCD display unit 30 in a two-dimensional graph as shown in FIG. To display the moisture distribution state of the grain layer, that is, the moisture unevenness state of the grain layer. In the present embodiment, a measurement location is provided every 500 kg, and the maximum dryable amount up to 1500 kg is displayed as LV1, and the maximum dryable amount 6000 kg is displayed as LV10.

  Referring to FIG. 10, the vertical axis of the graph displays the grain moisture value scale, and the horizontal axis displays the grain moisture measurement location of each grain layer. And the line graph which connects the representative moisture value m for every grain layer is displayed.

A method for making it easy to see the graph showing the moisture unevenness state on a relatively small screen will be described below.
The scale of the grain moisture value on the vertical axis of the graph of FIG. 10 is configured so that it can be displayed over a range from a high moisture range (around 35%) to a low moisture range (around 10%). The numerical value is fixed and displayed.

For this reason, when the difference in normal moisture unevenness (up and down 5%) is obtained, a line graph having a small change in a narrow range in the vertical direction is obtained, and the moisture unevenness state of the grain is difficult to visually recognize on a small screen.
Therefore, as shown in FIGS. 11 and 12, the scale of the vertical axis is changed according to the representative moisture value m of each grain layer (LV1 to LV10). That is, first, the average value n of all the representative moisture values m is set to a substantially central position on the vertical axis, and the upper and lower limits of the scale on the vertical axis are the numerical values of the highest moisture value and the lowest moisture value in the representative moisture value m. Display each. Actually, the most recent integer value is displayed for each of the maximum moisture value and the minimum moisture value. FIG. 11 shows that the representative moisture value of each grain layer is in the range of about 18% to 23%, and FIG. 12 shows that it is in the range of about 21% to 25%.

  Therefore, it is possible to display a line graph with a good balance in the vertical direction across the center position of the scale on the vertical axis. In addition, by displaying the upper and lower limit values as the maximum and minimum moisture values in the representative moisture value m, respectively, even in the case of a normal difference in moisture unevenness (up and down 5%), a wide range in the vertical direction. Since the line graph has a large change, it is possible to make it easy to visually recognize the moisture unevenness state of the grain even on a small screen. In addition, the range of moisture values that were in the water irregularity state immediately after the start of drying, during the drying (for example, the detection of the moisture irregularity state during the pause process), and at any point in the moisture unevenness state after the drying was completed. Therefore, it is possible to obtain a graph in which the moisture unevenness state is easy to visually recognize.

  In addition, although the representative moisture value m of FIG. 9 is calculated by the average moisture value of all 32 grains, as shown in FIG. 15, the sample grain having the highest moisture value and the moisture value of the lowest area in the 32 grains. It is good also as the average value of the remaining sample grain which cut the numerical value of the sample grain of.

Next, the display screen when the drying operation is stopped will be described below.
There are the following two reasons for stopping the drying operation, that is, for stopping the combustion burner 4.
When the moisture meter 9 detects that the grain has reached the set moisture value, the combustion burner 4 stops. When the combustion burner 4 burns, some abnormality occurs and the combustion burner 4 is stopped.

  In any case, what is important when the combustion burner 4 is stopped is that it is possible to quickly grasp why the combustion burner 4 has stopped and what the state of the grain is when stopped.

  As shown in FIG. 13 and FIG. 14, the grain moisture value at the time of stoppage, the amount of grain (finished amount) at the time of stoppage, and the time of stoppage are the same. Displayed in style. In FIG. 13 and FIG. 14, the display style of the reason why the combustion burner 4 is stopped is common, and the display contents are different.

  When the combustion burner 4 is stopped due to an abnormality, it is particularly important to know the grain moisture value at the time of stopping, and if the grain moisture value is stopped during the drying process, Will deteriorate. In addition, the time of stoppage is also an important matter for judging the subsequent grain condition. In addition, the amount of grain at the time of the stop is activated when the stop amount sensor 19 is activated to automatically measure the grain amount and display the measurement result.

  When the combustion burner 4 is stopped due to an abnormality, it is particularly important to know the grain moisture value at the time of stopping, and if the grain moisture value is stopped during the drying process, Will deteriorate. Therefore, by displaying the grain moisture value at the time of abnormal stop promptly together with the abnormality display, it becomes possible to perform appropriate post-processing.

  Moreover, the state of the grain after the stop can be determined by displaying the stop time. For example, the appropriate time for starting the hulling operation is estimated from the stop time displayed when the stop is performed at the set moisture value. be able to. Moreover, the time required for the hulling work can be estimated in advance by displaying the grain amount at the time of finishing.

Furthermore, by making the position for displaying the reason for stopping when stopped and the position for displaying the state of the grain when stopped, it is easy to visually recognize the situation quickly.
The position of displaying the reason for stopping when it stops may be configured to blink or change the color of the backlight when the stop occurs due to an abnormality.

30 Display screen

Claims (3)

  In the display screen (30) of the grain dryer displaying the drying state and drying conditions, when the set moisture value is reached and the drying operation is stopped, or when the drying operation is stopped due to an abnormality until the set moisture value is reached In any of these, the grain moisture value at the time of stopping when drying is stopped is displayed on the display screen (30).   The display screen of the grain dryer according to claim 1, wherein a stop time at the time when the drying is stopped and an amount of cereal grains at the time of the stop are displayed.   The form of the display screen (30) when the drying operation is stopped when the drying operation is stopped after reaching the set moisture value or when the drying operation is stopped abnormally until the set moisture value is reached. The display screen of the grain dryer according to claim 1 or 2, wherein display of whether the drying operation is stopped or abnormally stopped based on the set moisture value is distinguished.

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