JP5262443B2 - Grain discharge control device for dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in a method of carrying out measurement by hanging a grain amount sensor of a weight string configuration in a drying chamber for measuring an amount of grain stored in a drying machine wherein it is difficult to automate measurement since a weight string contacts a rotating part in the drying chamber or feeding rotary valve or the like of a storage chamber lower part, and it is sometimes caught. <P>SOLUTION: In the drying machine having the grain amount sensor 3 detecting the grain amount by hanging the weight string 2 in a grain storage chamber 1, the grain discharge controller is composed by that a residual grain amount measured by the grain amount sensor 3 in each predetermined time after starting discharge, and a discharge time required for discharge completion are displayed when extracting and discharging grain in a storage chamber 1 to the outside. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a grain discharge control device that suspends a grain quantity sensor in a grain storage chamber of a dryer and takes out and discharges the grain after drying while detecting the grain quantity.

A technique for suspending a weight sensor in the form of a weight string in a grain storage chamber, measuring the amount of grain in the storage chamber or the drying chamber, and calculating the time required for discharging (see, for example, Patent Document 1) There is.
Japanese Patent Application Laid-Open No. 2008-101825 (first page, FIG. 1).

  In the drying facility or dryer, since the drying operation is continuously performed for a long time when the harvesting period starts, it is necessary to efficiently replace grains in the dryer during each drying process. In particular, in order to measure the amount of stored grain in the dryer, in the method of measuring by hanging a weight sensor in the form of a weight string, the weight string is dried in the lower part of the storage chamber. It is difficult to automate measurement because it may come into contact with or be involved in a rotating part such as a room or a feeding rotary valve.

  The invention described in claim 1 is a dryer having a grain amount sensor 3 for detecting a grain amount by suspending a weight string 2 in the grain storage chamber 1 and removing the grains in the storage chamber 1 outside the machine. The structure of the grain discharge control device, characterized by displaying the remaining grain amount or the discharge time required for the completion of discharge by measuring with the grain amount sensor 3 every predetermined time after the start of discharging. And When the dried grain in the storage chamber 1 after the grain drying is taken out and discharged out, it is discharged by the dry finish amount and the discharge setting capability in order to know in advance such as the amount of grain and the time required for discharging. Although time etc. can be calculated and displayed on the display window, they are measured by the grain amount sensor 3 when the grain is discharged. In addition, this measurement is performed intermittently every predetermined time after the start of discharge, and the amount of residual grain and the discharge time required for completion of discharge are updated in the display panel of the control panel for each measurement. indicate.

In addition, when the amount of grain in the storage chamber 1 is less than or equal to the set amount, or when the amount of remaining discharged grain is reduced to less than or equal to the set value , the measurement by the grain amount sensor 3 is stopped. When the amount of squeezed grain stretched in the storage chamber 1 of the dryer is less than a certain set standard, or when the amount of residual grain discharged at the time of discharge decreases to a certain set standard or less, When the measurement operation of the particle amount sensor 3 is performed, the weight string 2 may come into contact with the drying chamber or a rotation area such as a feeding valve. Therefore, the weight string 2 is suspended thereafter. I ca n’t.

In the invention according to claim 2, the grain of the storage chamber 1 is discharged by the moisture sensor 5 that detects the grain moisture value while feeding and circulating the grain by driving the feeding valve 4. When detecting presence / absence and detecting the presence of this overhanging grain, the feeding valve 4 is driven to perform measurement by the grain amount sensor 3 to detect the absence of the overhanging grain When doing so, the feeding valve 4 is not driven or the measurement by the grain amount sensor 3 is not performed. In the form of providing the moisture sensor 5 for detecting and measuring the grain moisture during drying in addition to the grain amount sensor 3, the moisture sensor 5 can detect the presence or absence of the grain in the storage chamber 1. When the grain in the storage chamber 1 of the dryer is taken out and discharged, when detecting the presence of the stretched grain in the initial stage of discharge, even if the weight string 2 is suspended, it does not come into contact with the feeding valve 4 or the like. Therefore, the feeding valve 4 is driven to operate the grain amount sensor 3 to perform the measurement action. Moreover, when detecting that there is no overhanging grain, the measuring action of the grain amount sensor 3 is performed without driving the feeding valve 4. At this time, even if the weight string 2 comes into contact with the feeding valve 4, it is rarely wound and can be measured. In addition, after the measurement by the grain amount sensor 3 having the weight string 2, it is possible to drive the feeding valve 4 to perform feeding and discharging. Moreover, when it is detected that there is no stretched grain, there is often no need to measure the amount of grain, and troubles due to contact with the feeding valve 4 can be caused by stopping the suspension of the weight string 2. Can be lost.

  The invention according to claim 1 accurately maintains the measurement display in order to intermittently measure and display the grain amount in the storage chamber 1 after drying and the remaining amount at the time of discharge intermittently with the progress of the discharge. And accuracy can be improved. In addition, it is possible to continuously know and check the discharge and measurement status by periodic measurement over the discharge line.

Moreover, when detecting the grain of the storage chamber 1, when the amount of squeezed kernel in the storage chamber 1 is small, or the amount of discharged residual kernel being discharged is reduced, the detection action of the grain amount sensor 3 is detected. Is difficult, the contact of the weight string 2 with the feeding valve 4 can be eliminated by stopping the measurement of the grain amount sensor 3, and damage to the grain amount sensor 3 can be reduced.

In the invention according to claim 2 , in the initial stage of discharging the grain in the storage chamber 1, the presence or absence of the grain is detected by the moisture sensor 5 which has already acted from the drying process, and its moisture content is detected. Since the grain quantity sensor 3 can be operated after confirming the presence of the grain by the sensor 5, the configuration can be simplified to know the grain quantity at the start of discharge, and the grain quantity sensor 3 is damaged. You can work safely without doing.

  Based on the illustrated example, the grain dryer is provided with a lower auger 6 and a feeding valve 4 along the upper side at the lower central part of the box-shaped drying tank. A drying chamber 9 having a V-shaped front view formed with ventilation plates 7 and 8 made of plate molding or the like is configured, and the feeding valve 4 is driven and rotated by a motor 10 to flow down the grains in the drying chamber 9. Thus, it can be fed out onto the lower lower auger 6. The storage chamber 1 is communicated with the upper side of the drying chamber 9, and the grains that flow down to the drying chamber 9 are accommodated. The hot air chamber 11 is formed in the central part between the drying chambers 9 having the V-shaped cross section, and the hot air generated from the burner 12 provided on the front side of the dryer is sent. From the hot air chamber 11, the ventilation plates 7 and 8 are connected. Then, the air is guided through the drying chamber 9 to the outside exhaust chamber 13. V-shaped flow grain plates 14 are formed outside the ventilation plates 8 on the left and right sides, and are placed on the lower auger 6. An exhaust fan 15 consisting of a suction fan is provided on the back side of the exhaust chamber 13, and the dry air is exhausted from the exhaust fan 15 to the outside.

  On the front side of the dryer, in addition to the burner 12, a groining machine 16 that receives the grains conveyed from the lower auger 6 and cereals, a control box 17 that arranges various operation systems, and the like are arranged. A moisture sensor 5 is provided at the mid-risk position of the groining machine 16, a part of the grain being raised is sampled at predetermined time intervals, and the grain moisture is detected while being crushed. In this embodiment, the moisture value is displayed on the control panel 18 in a liquid crystal display. Moreover, it is the structure which detects the presence or absence of a grain.

  The upper end of the groining machine 16 is passed through the upper auger 19 formed along the upper end central portion of the storage chamber 1, and the grains to be transferred and conveyed are supplied to the diffusing plate 20 at the end portion, and this diffusion is performed. By rotating the board 20, it can be diffused and supplied into the storage chamber 1, and can be dried while being circulated. Further, a supply hopper can be provided at the lower part of the groining machine 16 to receive the supply of harvested grains brought in from the outside. When the grain dried by this dryer is taken out and discharged out of the machine, the ascending machine 16 is conveyed by opening the switching valve 22 of the discharge port 21 provided on the front side of the upper auger 19. The grain can be discharged from the discharge port 21 to the outside of the machine.

  The grain amount sensor 3 for detecting the grain amount in the storage chamber 1 suspends the weight string 2 having the weight 23 and lowers or raises the weight string 23 by rotating the reel motor. Is read by the upper surface A of the grain layer, and the length of the weight string 2 is read, and the amount of grain supplied and accommodated in the storage chamber 1 can be calculated by the controller 24. When this grain amount sensor 3 detects the slack of the weight string 2 by lowering the weight string 2 by the electric motor of the reel motor every time of detection, and the weight 23 is placed on the upper surface A of the grain, By rolling up the weight string 2 with a reel motor, the grain in the storage chamber 1 is detected based on detection of the number of rotations of the reel motor, the unwinding length of the weight string 2, or the winding length. The amount of grains is calculated. Such a detection operation of the grain amount sensor 3 is appropriately performed in a process such as a grain embedding process before drying, immediately before the start of drying, at the end of drying, or at the time of discharging. It is a form automatically performed by.

  The control panel 18 is provided with an LCD display screen 25, and each setting switch section 26, 27, 28, etc. in the form of a touch switch is arranged. Further, a display window 29 for displaying the hot air temperature of the drying air, the moisture content of the grain, the remaining time of drying, etc. is arranged. Further, as a push button operation switch, there are a tension switch 30 for tensioning the grain to be dried in the dryer, a ventilation switch 31 for driving the ventilator 15 to ventilate the drying chamber 9 and the like, and a burner 12. A drying switch 32 for burning and drying, a discharge switch 33 for discharging the dried grain to the outside of the dryer such as the storage chamber 1, a stop switch 34 for stopping the drying action, and an emergency stop switch for urgently stopping 35 etc. are arranged. When the tension switch 30, the drying switch 32, the discharge switch 33, or the like is operated to operate the grain insertion, during the drying operation, or when the grain is discharged, the tension amount switch 26 is operated to "automatic". The detection operation by the grain amount sensor 3 is automatically output controlled.

  In addition, on the LCD display window 25, the discharge state of the grain in the storage chamber 1 measured by the grain amount sensor 3 is displayed as shown in FIG. The remaining amount of waste and the estimated end time of discharge are displayed. In this display example, “discharge time” indicates the elapsed discharge time from the start of discharge until the present time, and “remaining amount” indicates the amount of grain remaining in the storage chamber 1 currently being discharged. , "Estimated discharge end time" indicates the time required from the current time until the discharge is completed, and "Next estimated amount of insertion time" is the next during the discharge process in which the current discharge is being performed. The time until the kernel (residual) amount detection measurement by the kernel amount sensor 3 measured intermittently is shown.

  Here, the grain discharge control device has a grain quantity sensor 3 that suspends the weight string 2 in the grain storage chamber 1 and detects the grain quantity, and the grains in the storage chamber 1 are A grain discharge control device characterized by displaying the remaining grain amount or the discharge time required for the completion of discharge by measuring with this grain amount sensor 3 every predetermined time after the start of discharge when taking out and discharging outside the machine. The configuration is as follows. When the dried grain in the storage chamber 1 after the grain drying is taken out and discharged out, it is discharged by the dry finish amount and the discharge setting capability in order to know in advance such as the amount of grain and the time required for discharging. Although time etc. can be calculated and displayed on the display window, they are measured by the grain amount sensor 3 when the grain is discharged. In addition, this measurement is intermittently performed every predetermined time after the start of discharging, and the amount of remaining grains, the discharging time required for completion of discharging, etc. are displayed for each measurement on the display window (FIG. 7). Display).

  Further, the operation of the grain amount sensor 3 is stopped when the grain insertion amount in the storage chamber 1 is less than or equal to a set amount, or when the discharged residual grain amount is reduced to less than the set amount. . When the amount of squeezed kernels stretched into the storage chamber 1 of the dryer is less than a certain set standard, or when the amount of residual kernels discharged at the time of discharge decreases below a certain set standard, When the measuring operation of the quantity sensor 3 is performed, the weight string 2 may come into contact with the rotation region of the feeding valve 4, so that the weight string 2 is not suspended thereafter.

  In addition, the moisture sensor 5 that detects the moisture content of the grain while feeding and circulating the grain in the storage chamber 1 by driving the feeding valve 4 detects the presence or absence of the stretched grain at the initial discharge. When detecting the presence of this overhanging grain, the feeding valve 4 is driven to measure the grain amount sensor 3, and when it is detected that there is no overhanging grain, the feeding valve 4 is not driven, or the grain amount sensor 3 is not measured. In the form of providing the moisture sensor 5 for detecting and measuring the grain moisture during drying in addition to the grain amount sensor 3, the moisture sensor 5 can detect the presence or absence of the grain in the storage chamber 1. When the grain in the storage chamber 1 of the dryer is taken out and discharged, when detecting the presence of the stretched grain in the initial stage of the discharge, even if the weight string 2 is suspended, it does not come into contact with the feeding valve 4. Then, the feeding valve 4 is driven to operate the grain amount sensor 3 to perform the measurement operation. Moreover, when detecting that there is no overhanging grain, the measuring action of the grain amount sensor 3 is performed without driving the feeding valve 4. At this time, even if the weight string 2 comes into contact with the feeding valve 4, there is little winding and measurement is possible. In addition, after the measurement by the grain amount sensor 3 having the weight string 2, it is possible to drive the feeding valve 4 to perform feeding and discharging. Moreover, when it is detected that there is no stretched grain, there is often no need to measure the amount of grain, and troubles due to contact with the feeding valve 4 can be caused by stopping the suspension of the weight string 2. Can be lost.

  When the grain drying operation is completed and the grain in the storage chamber 1 is taken out and discharged, the discharge switch 33 is turned on. When the discharge switch 33 is turned on, the exhaust fan 15 is driven and the switching valve 22 is switched to discharge to the discharge port 21 side. Further, the feeding valve 4, the upper and lower augers 19 and 6, and the grain raising machine 16 are driven to feed the grains in the storage chamber 1 down from the drying chamber 9 to the lower auger 6. Then, it is conveyed to the upper auger 19 and the discharge port 21 at the start end is discharged out of the machine.

  The initial detection of the amount of stretched grain by the grain amount sensor 3 is performed simultaneously with the ON operation of the discharge switch 33 or in the process before the ON operation of the discharge switch 33. As for the measurement of the grain amount, the weight string 2 is suspended as described above, the weight 23 is placed on the upper surface A of the grain layer of the storage chamber 1, and the suspended length of the weight string 2 is measured. Is read, and the initial amount of sown grain is calculated (S1 in FIG. 5), and the time required to discharge this amount of grain is calculated based on the discharge capacity based on the rotation speed of the feeding valve 4, etc., and the display screen 25 To display. When the set amount of time has elapsed after detecting the amount of stretched grain (S2 in FIG. 5), the action of detecting the amount of remaining grain in the draining storage chamber 1 is performed by the same grain quantity sensor 3 with the weight string. 2 is performed by the lifting action. The detected value of the remaining grain amount on the display screen 25 is sequentially updated by this measurement. When the detection of the grain amount by such a grain amount sensor 3 and the calculation of the predicted time required for the completion of discharge by this detection are repeatedly performed, the residual grain amount in the storage chamber 1 decreases below the setting (S3 in FIG. 5). ) The measurement action from the next measurement is stopped and the weight string 2 is not suspended.

  In such a grain discharging action, for example, by turning off the power, there is no data on the amount of squeezed grain at the end of drying, or there may be no grain squeezed at all, In such a case, if the measuring action is performed while the feeding valve 4 is driven, the weight string 2 may be caught in the feeding valve 4 and damaged when the weight string 2 is suspended. In such a case, if the driving of the feeding valve 4 is stopped, it takes time to start the grain discharge, which is not appropriate. Therefore, in such a case, since the presence or absence of the cereal grain is detected by the moisture sensor 5, when the presence of the grain is detected by the moisture sensor 5, the feeding valve 4 Drive is performed and the grain amount measurement by the grain amount sensor 3 is performed (S4 in FIG. 5). If the drying chamber 9 or the storage chamber 1 has a grain amount, even if the weight string 2 is suspended, the weight 23 is less likely to come into direct contact with the rotating feed valve 4 and is safe.

  Even during the grain drying operation, the grain quantity sensor 3 may detect the grain quantity. However, this is only for the purpose of checking the drying rate and is an initial display standard. Accordingly, separately from this, at the start of grain discharge, the amount of tension detected at the end of drying as described above, or the discharge end time based on the discharge capacity setting value or the like is calculated based on this amount of tension. In addition, during the discharge, the remaining amount is measured periodically, the discharge end time for the remaining amount is calculated, and updated and displayed as shown in FIG. A subtraction process is performed between the initial stage of the discharge and the update by the measurement in the middle of the discharge, and the display is gradually reduced (the subtraction process may not be performed). As described above, since the discharge completion time is corrected and folded while detecting the remaining amount a plurality of times during the discharge, an accurate time display can be performed and the accuracy can be improved. Moreover, in the said dry form, since the delivery valve | bulb 4 is driven at the time of discharge | emission, when the grain amount of the storage chamber 1 reduces by discharge | emission, there exists a possibility that it may be wound in this delivery valve | bulb 4 by suspension of the weight string 2. However, in the measurement of the intermittent grain amount, when this remaining amount is below a certain amount, the detection and measuring action by this grain amount sensor 3 is not performed, and the remaining amount is determined by the rotation of the feeding valve 4 or the like. The discharge completion time is displayed by mechanical subtraction processing by the controller 24 according to the set feeding ability. At this time, even if the display time is not updated, it is possible to display, for example, “the number of remaining minutes for discharging”.

  The initial detection measurement of the grain amount by the grain quantity sensor 3 is for displaying the discharge time from the start of the grain discharge to the end of the discharge. Measure. Therefore, if there is accurate grain amount data at the end of drying, this initial measurement can be omitted. It is difficult to determine whether or not there is a grain in the dryer, and since the feeding valve 4 is driven at the time of discharge, it is necessary to perform the grain amount detection measurement in the idle operation state without the grain. As a result, the weight string 2 may be wound around the feeding valve 4. Therefore, at the beginning of the grain discharge, the presence or absence of the grain is determined by driving the moisture sensor 5, and when it is determined that the grain is present, the measurement action by the grain amount sensor 3 is started. When it is determined that there is no grain, measurement is performed or measurement is not performed without driving the feeding valve 4, and after this measurement, the feeding valve 4 is driven to discharge. Or at the time of a discharge | emission start, without measuring the delivery valve | bulb 4, it can also measure by the grain amount sensor 3, and drive the delivery valve | bulb 4 after this measurement, and can also perform discharge | emission. However, when the measurement is performed without driving the feeding valve 4 in this way, even if the discharge switch 33 is pressed, the feeding of the grain is not performed immediately, so that this can be displayed or notified. .

  The measurement of the amount of squeezed kernel is also performed in the dry finish measurement after drying, but the data may disappear if there is a situation such as turning off the power after completion of drying, so the amount of kernel It is necessary to take measures to prevent the sensor 3 from being damaged.

  Next, for the measurement control of the grain amount sensor 3 at intermittent discharge, the grain amount sensor 3 is driven to display the remaining amount at the time of discharge and the time until the end of discharge, and the grains in the storage chamber 1 When measuring the amount of grain (the amount of tension), for example, for measurement control in the case of causing continuous discharge to be discharged while packing the grain, ON / OFF of the discharge switch 33 is repeated. Become. In such a case, since the discharge amount is substantially constant every time the discharge switch 33 is operated, it is not necessary to measure the discharge amount frequently, and the amount of grain at the start of discharge (data at the end of drying or the previous time) The amount of grain at the time of measurement) is stored, and the remaining amount is sequentially calculated from the discharge capacity, and measured at a constant remaining amount interval or a driving time interval of the constant feeding valve 4 to determine the remaining amount or remaining time. Update. Then, when the remaining discharge amount approaches a small amount (setting), the measurement by the sensor 3 is not performed.

  If you stop the bag many times during discharge and repeat the discharge again, the amount of grain (remaining amount) is measured each time the discharge is started. And the grain quantity sensor 3 is easily damaged. For this reason, the amount of grain is memorized, and the remaining amount is calculated and updated sequentially with the discharge capacity and the elapsed discharge time, and the measurement by the grain amount sensor 3 is performed for a certain time or every certain amount. When the amount is small, the measurement is stopped, or the control is limited so that the measurement is performed only when the measurable condition is confirmed, so that the weight string 2 is secured.

  If the discharge is manually stopped or stopped due to an abnormality during the discharge control as described above, the grain amount data is cleared and the subsequent discharge action is resumed. It is possible to configure such that the measurement is not performed and the remaining amount of grain, the discharge completion time, and the like are not displayed. In the discharge control mode in which the discharge completion time is updated and displayed while measuring the grain amount intermittently or periodically, when the control is stopped in this process, the kernel amount measurement is performed each time, Since measurement control becomes complicated and damage to the sensor 2 is likely to occur, this measurement is not performed.

  The process for winding up the grain amount sensor 3 having the weight string 2 is configured to be performed at the beginning of power-on, at the start of each operation start, or at the start of grain (stretching) amount measurement. The weight 23 is suspended from the lower end of the string 2. If the string 2 is pulled out for some reason and is loosened, and the normal drooping state due to the weight 23 is not maintained, the grain amount is accurate. Detection and measurement may not be possible. For this reason, as described above, the weight string 2 is once wound up at the time of measurement and then lowered so that the weight 23 is correctly placed on the upper surface A of the grain layer. The amount of abnormal loosening of the string 2 and the disturbance of the posture of the weight can be reduced, and an accurate and stable measurement of the grain amount can be performed.

  Next, mainly based on FIG. 6, when the said grain quantity sensor 3 is operated and the present grain quantity is detected, it is set as the structure which each other actuator carries out a detection operation during operation stop (FIG. 6 S6). Is. When the grain quantity sensor 4 is activated while other actuators are operating, the grain quantity is often erroneously detected due to the effects of motor induction noise, wind pressure by the fan, etc., but other actuators are stopped. In such a case, it is possible to reduce such erroneous detection and increase detection accuracy. In addition, it is convenient to display on the display screen 25 that the grain amount sensor 3 is in the detection operation and to turn on the pilot lamps on the operation switches 30 to 35, thereby improving operability. Can do.

The front view of a dryer. The side view. The front view of the control panel part. The block diagram of the controller part. The flowchart of the discharge | emission control part. The flowchart which shows the grain amount sensor action | operation timing. The figure which shows the display screen which shows the discharge situation

DESCRIPTION OF SYMBOLS 1 Storage chamber 2 Weight string 3 Grain quantity sensor 4 Feeding valve 5 Moisture sensor

Claims (2)

In the dryer having the grain amount sensor (3) for detecting the grain amount by suspending the weight string (2) in the grain storage chamber (1), the grain in the storage chamber (1) is taken out of the machine. When taking out and discharging, it is configured to display the remaining grain amount, or the discharge time required for completion of discharge, measured by this grain amount sensor (3) every predetermined time after the start of discharging ,
Drying characterized in that the measurement by the grain amount sensor (3) is stopped when the amount of grain in the storage chamber (1) is less than or equal to the set amount, or when the amount of remaining discharged grain is reduced to less than or equal to the set amount. Machine grain discharge control device. With the moisture sensor (5) detecting the grain moisture value while feeding and circulating the grain in the storage chamber (1) by driving the feeding valve (4), the presence or absence of the stretched grain in the initial discharge When detecting the presence of this overhanging grain, the feeding valve (4) is driven and the measurement by the grain amount sensor (3) is carried out to confirm that there is no overhanging grain. 2. The grain discharge control device for a dryer according to claim 1, wherein when detecting, the feeding valve (4) is not driven or measurement by the grain amount sensor (3) is not performed .

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