JP2009047349A - Grain drying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grain drying device capable of predicting an average moisture value of grain after stopping a processing. <P>SOLUTION: This grain drying device 10 can predict the average moisture value of the grain K changing with the lapse of time after stopping a drying operation, by correcting the average moisture value of the grain K on the basis of a ratio of immature grain in the grain K and kurtosis of a distribution of the moisture value of the grain K during the drying operation. Further the drying operation is stopped at a time when the average moisture value of the predicted grain K reaches the target average moisture value of the grain K. Thus the average moisture value of the grain K reaches the target average moisture value of the grain K, and excess drying of the grain K can be prevented after stopping the drying operation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a grain drying apparatus for drying grain.

  As a grain drying device, there is one in which a moisture content measuring device measures a moisture value (moisture content) of a grain (see, for example, Patent Document 1).

In such a grain drying apparatus, there is a possibility that the average moisture value of the grain changes due to the transfer of moisture between the grains over time after the grain drying process is stopped. In other words, if the distribution of moisture content of grains is large (the kurtosis in the distribution of moisture in grains is low), the moisture content of grains will change due to the transfer of moisture between grains depending on the passage of time after the grain drying process is stopped. Dispersion of the distribution of the grain shrinks greatly, the average moisture value of the grain decreases, and it tends to be overdried. However, if the proportion of immature grains in the cereal is large, the immature grains are high in moisture, so the moisture of the immature grains migrates to other grains as time passes after the cereal drying process stops, Average moisture value is difficult to decrease.
JP 2007-93058 A

  An object of the present invention is to obtain a grain drying apparatus capable of predicting the average moisture value of grains after processing is stopped in consideration of the above facts.

  The grain drying apparatus according to claim 1 is connected to the main body for drying the grain, detection means for detecting moisture of the grain, and the detection means, and the proportion of immature grains in the grain and the distribution of moisture of the grain. Predicting means for predicting the average moisture value of the grain after the processing is stopped using at least one of the kurtosis in

  The grain drying apparatus according to claim 2 is the grain drying apparatus according to claim 1, wherein the average moisture value of the grain after the processing stop predicted by the predicting means becomes the target average moisture value of the grain. It is characterized by automatically stopping grain processing.

  The grain drying apparatus according to claim 3 is connected to the prediction means in the grain drying apparatus according to claim 1 or 2, and notifies that the average moisture value of the grain changes after the grain processing is stopped. It is characterized by having an informing means.

  In the grain drying apparatus according to the first aspect, the apparatus main body dries the grain, and the detection means detects the moisture (moisture content) of the grain.

  Here, the predicting means connected to the detecting means predicts the average moisture value of the grain after the processing is stopped by using at least one of the ratio of immature grains in the grain and the kurtosis in the moisture distribution of the grain. . For this reason, the average moisture value of the grain after the processing is stopped can be predicted.

  In the grain drying apparatus according to the second aspect, when the average moisture value of the grain after the processing stop predicted by the predicting means reaches the target average moisture value of the grain, the grain processing is automatically stopped. For this reason, the average moisture value of the grain can be easily made the target average moisture value of the grain after the processing of the grain is stopped.

  In the grain drying apparatus according to the third aspect, the notification means connected to the prediction means notifies that the average moisture value of the grain changes after the grain processing is stopped. Therefore, the user can recognize that the average moisture value of the grain changes after the grain processing is stopped.

  FIG. 1 shows a sectional view of a circulating grain drying apparatus 10 according to an embodiment of the present invention as seen from the front, and FIG. 2 shows a section of the grain drying apparatus 10 as seen from the left. It is shown in the figure. In the drawing, the front of the grain drying apparatus 10 is indicated by an arrow FR, the right side of the grain drying apparatus 10 is indicated by an arrow RH, and the upper part of the grain drying apparatus 10 is indicated by an arrow UP.

  The grain drying apparatus 10 according to the present embodiment includes a machine body 12 as an apparatus main body, and the machine body 12 has a rectangular parallelepiped box shape that is vertically high and long.

  The upper part in the machine body 12 is a cereal tank 14 that constitutes a storage chamber, and grain K (for example, straw) is stored (accommodated) in the cereal tank 14.

  A pair of air duct partition walls 16 are provided in the lower part of the airframe 12, and each air duct partition wall 16 has air permeability. Each exhaust passage partition wall 16 is bridged between the front plate and the rear plate of the fuselage 12 and is inclined downward from the side plates of the fuselage 12 toward the center in the left-right direction of the fuselage 12. The exhaust path partition wall 16 has a funnel shape.

  A wind tunnel plate 18 is provided on the inner side of the airframe 12 of the pair of exhaust passage bulkheads 16. The wind tunnel plate 18 has air permeability and a substantially rhombic cylindrical shape. The wind tunnel plate 18 is bridged between the front plate and the rear plate of the fuselage 12, and the lower side of the wind tunnel plate 18 is parallel to the opposing exhaust duct bulkheads 16. The interior of the air passage 22 is an air passage 22. A rectangular outside air inlet 26 is formed on the front plate of the machine body 12 corresponding to the air passage 22, and the outside air inlet 26 communicates with the air passage 22.

  An air guide partition wall 32 is provided between the upper side of the wind tunnel plate 18 and the upper portion of each exhaust channel partition wall 16. Each of the air guide channel partitions 32 has air permeability and has a substantially rhombic cylindrical shape. It is said that. Each air guide partition 32 is bridged between the front plate and the rear plate of the airframe 12, and the inside of each air guide partition 32 is a wind guide 34. The lower side of each air guide path partition wall 32 is made parallel to each of the air exhaust path partition walls 16 facing each other and parallel to the wind tunnel plate 18 facing each other.

  On the left and right sides of the wind tunnel plate 18, there are between the wind tunnel plate 18 and the wind guide partition wall 32, between the wind guide partition wall 32 and the exhaust channel partition wall 16, and between the wind tunnel plate 18 and the exhaust guide plate 18. Grain flow paths 36 that form a storage chamber are formed between the airway partition walls 16, and the grain K stored in the cereal tank 14 flows (flows) into each grain flow path 36.

  A cylindrical shutter drum 38 is provided between the lower ends of each grain flow path 36 as a feeding means constituting the flow means. The shutter drum 38 substantially closes the lower end of each grain flow path 36, It is spanned between the front plate and the rear plate of the airframe 12 and is rotatable about the axis. A pair of rectangular slits 40 elongated in the axial direction are formed on the outer periphery of the shutter drum 38. One slit 40 is disposed on the front side of the outer periphery of the shutter drum 38, and the other slit 40 is Further, it is arranged on the rear side of the outer periphery of the shutter drum 38 and on the opposite side in the circumferential direction of one slit 40. Here, when the shutter drum 38 rotates and each slit 40 faces the lower end of each grain flow path 36, the grain K in each grain flow path 36 flows into the shutter drum 38 via each slit 40, Further, the shutter drum 38 rotates and the slits 40 face downward, so that the grain K flowing into the shutter drum 38 is discharged downward.

  A pair of stretched flow plates 42 is provided below the pair of exhaust passage partition walls 16, and each stretched flow plate 42 is bridged between the front plate and the rear plate of the machine body 12. The pair of tension flow plates 42 are inclined downward from the respective side plates of the machine body 12 toward the center in the left-right direction of the machine body 12 to form a funnel shape. Further, an air exhaust passage 44 is provided between each stretched flow plate 42 and each air exhaust passage partition 16.

  A tension hopper 46 is provided in the lower part of each side plate of the machine body 12 so as to be openable and closable, and the grain hopper K can be stretched (supplied) into the machine body 12 by opening each tension hopper 46. . Here, the grain K discharged from the shutter drum 38 or the grain K stuck from the tension hopper 46 flows down between the lower ends of the tension flow plates 42.

  A lower screw conveyor 48 that constitutes a flow means is provided between the lower ends of each stretched flow plate 42, and the lower end of the lower screw conveyor 48 is fixed to the rear plate of the machine body 12, and the front end of the machine body is the machine body. 12 protrudes forward from the front surface. The lower screw conveyor 48 has a long bowl-shaped lower conveyance rod 50, and the upper surface and the front surface of the lower conveyance rod 50 outside the machine body 12 are closed. The lower conveyance basket 50 in the machine body 12 is communicated with the exhaust passage 44, and the grain K that has reached between the lower ends of the stretched flow plates 42 flows down into the lower conveyance basket 50. A lower screw 52 is provided in the lower conveying basket 50, and the grain K that has flowed into the lower conveying basket 50 is conveyed forward by the lower screw 52.

  On the right side, an elevator 54 that constitutes a flow means is erected in front of the machine body 12, and the upper part of the elevator 54 protrudes upward from the upper surface plate of the machine body 12. An endless belt 56 is disposed in the elevator 54, and buckets 58 are attached to the endless belt 56 at regular intervals. The lower end in the elevator 54 is communicated with the front end in the lower conveying basket 50, and the grain K discharged from the lower screw conveyor 48 (the front end in the lower conveying basket 50) and deposited on the lower end in the elevator 54 is an endless belt. The bucket 56 is lifted and conveyed by the bucket 58 to the upper end in the elevator 54.

  The side plate of the elevator 54 is provided with a moisture measuring device 86 as detection means at the lower end. The upper part in the moisture measuring device 86 communicates with the elevator 54, and when the grain K accumulated at the lower end in the elevator 54 is beaten by the bucket 58, the bucket 58 is lifted up by the bucket 58, so that the grain K Is automatically sampled (acquired) into the moisture measuring device 86 through the communicating portion with the elevator 54. A pair of electrode rolls (not shown) is provided in the moisture measuring device 86, and the grain K sampled into the moisture measuring device 86 is crushed between each pair of electrode rolls and a pair of electrodes. By measuring the electrical resistance value between the rolls, the measured electrical resistance value is converted into the moisture value (moisture content) of the grain K, and the moisture value of the grain K is measured for each grain.

  An upper screw conveyor 60 constituting a flow means is provided at the upper end of the machine body 12. The upper screw conveyor 60 has a rear end disposed immediately below the center of the upper surface plate of the machine body 12, and a front end of the upper body of the machine body 12. Projects from the faceplate. The upper screw conveyor 60 has a long bowl-shaped upper conveyance bar 62, and the lower surface of the rear end of the upper conveyance bar 62 is open. The front end in the upper conveyance basket 62 communicates with the upper end in the elevator 54, and the grain K conveyed to the upper end in the elevator 54 flows down to the front end in the upper conveyance basket 62. An upper screw 64 is provided in the upper conveying basket 62, and the grain K that has flowed down to the front end in the upper conveying basket 62 is conveyed backward by the upper screw 64. Further, the front end in the upper transport rod 62 can communicate with the discharge pipe 66, and when the front end in the upper transport rod 62 communicates with the discharge pipe 66, it flows down to the front end in the upper transport rod 62. The grain K is discharged from the grain drying apparatus 10 through the discharge pipe 66.

  Below the rear end of the upper screw conveyor 60, a disk-shaped leveling machine 68 constituting a flow means is rotatably provided, and is conveyed to the rear end of the upper screw conveyor 60 (the rear end in the upper conveying rod 62). The cereal grains K that flow down to the upper surface of the rotating leveling machine 68 are evenly distributed and distributed into the cereal tank 14 by centrifugal force.

  A rectangular parallelepiped box-shaped furnace case 70 is provided in the lower part of the front surface of the body 12 at the left side portion, and a plurality of slit-shaped outside air inlets 72 are formed in the front plate of the furnace case 70. The rear plate of the furnace case 70 is partially opened, and the interior of the furnace case 70 is communicated with the outside air inlet 26. Further, the left side portion of the bottom plate of the furnace case 70 is open.

  A rectangular box-like burner case 74 is provided on the lower left side of the front surface of the body 12 on the left side immediately below the furnace case 70. The upper surface plate of the burner case 74 is partially opened, and the burner case 74 communicates with the furnace case 70. In the burner case 74, a burner 76 as hot air generating means is provided.

  A rectangular box-like fan mounting base 78 is provided at the lower rear surface of the machine body 12, and the inside of the fan mounting base 78 communicates with each of the exhaust passages 44. The front end of the blower 80 is attached to the rear surface of the blower mounting base 78, and one end of a flexible exhaust duct 82 is attached to the rear end of the blower 80.

  Thereby, by driving the blower 80, the outside air (normal temperature wind) is sucked into the blower passage 22 from the outside air introduction port 72 through the furnace case 70 and the outside air inlet 26, and further, the wind tunnel plate 18, The air is sucked into the blower 80 through each grain flow path 36, each exhaust path partition 16, each exhaust path 44, and the blower mount 78, and exhausted through the exhaust duct 82. The outside air blown through the upper part of each grain flow path 36 passes through each air guide partition wall 32 and each air guide path 34.

  Furthermore, the outside air introduced into the furnace case 70 from the outside air inlet 72 is converted into hot air (dry air) by the burner 76 and blown to each grain flow path 36, whereby the grain K in each grain flow path 36. Is dried.

  An operation panel 84 (a control device and a display device) as a control unit, a prediction unit, and a notification unit is provided in the lower front portion of the machine body 12 directly above the furnace case 70. Each drive unit (including the moisture measuring device 86) is connected. The operation panel 84 is provided with various operation switches (not shown) such as a tension operation switch, a circulation operation switch, a drying operation switch, a discharge operation switch, a blower operation switch, a moisture measurement switch, and a stop switch. By operating various operation switches of the panel 84, the grain drying apparatus 10 is controlled (operated, stopped, etc.) by the operation panel 84. The operation panel 84 is provided with (connected to) a display unit (not shown), and the display unit has an average of the grain K based on the moisture value of the grain K measured by the moisture measuring device 86. The moisture value is displayed.

  Next, the operation of the present embodiment will be described.

  In the grain drying apparatus 10 having the above configuration, when the tension operation switch of the operation panel 84 is operated, the lower screw conveyor 48, the elevator 54, the upper screw conveyor 60, and the leveling machine 68 are driven to perform the tension operation. Then, the tension hopper 46 is opened, and the harvested grain K is tensioned into the body 12. Grain K stretched into the machine body 12 is guided to the lower screw conveyor 48 by the stretched flow plate 42, passes through the elevator 54, the upper screw conveyor 60, and the leveling machine 68 from the lower screw conveyor 48, in the grain tank 14 and each It is conveyed (stored) to the grain flow path 36. Further, the stretching operation is automatically stopped when the stop switch of the operation panel 84 is operated or when the grain K is stretched up to the tension limit in the grain tank 14 and each grain flow path 36. .

  For example, when it still takes time for the grain K to be dried for convenience after the grain K stretching process is finished, the shutter drum 38 and the lower screw conveyor 48 are operated by operating the circulation operation switch of the operation panel 84. The elevator 54, the upper screw conveyor 60, and the leveling machine 68 are driven and circulated. Thereby, the grain K stored in the grain tank 14 is returned to the grain tank 14 through each grain flow path 36, the shutter drum 38, the lower screw conveyor 48, the elevator 54, the upper screw conveyor 60 and the leveling machine 68, Circulated in the grain drying apparatus 10. The circulating operation is stopped by operating the stop switch on the operation panel 84.

  When the drying operation switch on the operation panel 84 is operated, the shutter drum 38, the lower screw conveyor 48, the elevator 54, the upper screw conveyor 60, the leveling device 68, the blower 80, and the moisture measuring device 86 are driven, and the burner 76 is ignited. Then, dry operation is performed.

  In the drying operation, the grain K is circulated in the grain drying apparatus 10 as in the case of the circulation operation.

  Further, by driving the blower 80, hot air is generated by the burner 76 from the outside air sucked and introduced into the furnace case 70 from the outside air inlet 72, and this hot air is passed through the outside air inlet 26, the air passage 22 and the wind tunnel plate 18. Grain K is dried by sucking and blowing air to each grain flow path 36 and absorbing the moisture of the grain K in each grain flow path 36. The hot air after absorbing the moisture of the grain K is sucked and blown to the blower 80 through (passes through) each exhaust passage partition 16, each exhaust passage 44, and the blower mounting base 78, and further, the exhaust duct 82. It is exhausted through.

  Further, when the grain K accumulated at the lower end in the elevator 54 is beaten by the bucket 58, the grain K is sampled into the moisture measuring device 86 by the action of the bucket 58 jumping up on the grain K. Therefore, the moisture value of the grain K sampled in the moisture measuring device 86 is measured for each grain by the moisture measuring device 86, and the average moisture value of the grain K calculated every predetermined time is displayed on the operation panel 84. Is done.

  The drying operation is automatically stopped by operating the stop switch of the operation panel 84 or when the grain K reaches a predetermined average moisture value (about 8 to 10 hours after the start of the drying operation). . When the drying operation is stopped, if necessary, the driving of the shutter drum 38 is stopped and the lower screw conveyor 48, the elevator 54, the upper screw conveyor 60, and the leveling machine 68 are continuously driven so that all grains K is stored in the grain tank 14 and in each grain flow path 36.

  For example, when the drying process of the grain K is completed, when the discharge operation switch of the operation panel 84 is operated, the shutter drum 38, the lower screw conveyor 48, the elevator 54, the upper screw conveyor 60, and the leveling machine 68 are driven, The discharge operation is performed, and the front end in the upper conveying basket 62 is communicated with the discharge pipe 66, whereby the grain K is discharged from the grain drying device 10 through the discharge pipe 66. Further, the discharging operation is automatically stopped by operating the stop switch of the operation panel 84 or when the grain K is completely discharged from the grain drying apparatus 10.

  For example, when performing a stretch operation, a circulation operation, or a discharge operation, when the air blow operation switch of the operation panel 84 is operated, the blower 80 is driven to perform the air blow operation. As a result, the outside air sucked and introduced into the furnace case 70 from the outside air inlet 72 is sucked and blown to each grain flow path 36 via the outside air inlet 26, the air passage 22 and the wind tunnel plate 18, and each grain flow path The air is blown to grain K in 36. The outside air after being blown to the grain K in each grain flow path 36 is sucked and blown to the blower 80 through (passes through) each exhaust path partition wall 16, each exhaust path 44, and the blower mount 78. Further, the air is exhausted through the exhaust duct 82. As a result, the grain K is prevented from being steamed and dust is discharged from the grain K. Further, the air blowing operation is stopped by operating the stop switch of the operation panel 84.

  For example, when a tension operation, a circulation operation, or a discharge operation is performed, the moisture measuring device 86 is driven when the moisture measuring switch of the operation panel 84 is operated. Thus, as in the drying operation, the moisture value of the grain K sampled into the moisture measuring device 86 is measured for each grain by the moisture measuring device 86, and the average of the grains K calculated every predetermined time is measured. The moisture value is displayed on the operation panel 84. Further, the measurement of the moisture value of the grain K is stopped by operating the stop switch of the operation panel 84. Furthermore, in the case of circulating operation, when the grain K reaches a predetermined average moisture value, the circulating operation is automatically stopped.

  Here, when the moisture measuring device 86 is driven, the average moisture value of the grain K displayed on the operation panel 84 is, for example, the grain K excluding the grain determined to be a high moisture immature grain (size adjustment). Grain) average moisture value (hereinafter referred to as “regulated average moisture value”).

  By the way, after the drying operation is stopped (after the drying process of the grain K is stopped), there is a possibility that the sized average moisture value of the grain K may change due to the transfer of moisture between the grains over time. That is, the variation in the moisture value distribution of the grain K is large (the kurtosis in the moisture value distribution (histogram) of the grain K is low) (for example, the Excel function “kurt” is low) and the time after the drying operation is stopped. The dispersion of the moisture value distribution of the grain K is greatly contracted by the transfer of moisture between the grains, and the sized average moisture value of the grain K is lowered and is easily overdried. However, if the proportion of immature grains in the grain K is large, the moisture content of the immature grains shifts to other grains (sized grains) with the passage of time after stopping the drying operation, and the adjusted grain average moisture value of the grains K Is hard to fall.

  For this reason, as shown in FIG. 3, in the operation panel 84, the adjusted average moisture value of the grain K is corrected for the ratio of the immature grains in the grain K (hereinafter referred to as “imature grain correction”), and the grain K The sized average moisture value of grain K that changes over time after the drying operation is stopped by correcting the sized particle average moisture value of grain K (hereinafter referred to as “kurtosis correction”) for the kurtosis of the moisture value distribution of (Hereinafter referred to as “predicted average moisture value”) is predicted.

  That is, the proportion of immature grains in grain K according to the average moisture value of grains K including immature grains (hereinafter referred to as “total average moisture value”) (for example, the difference between the total average moisture value and the adjusted average moisture value). And a threshold value (hereinafter referred to as a “kurtosis threshold value”) for the kurtosis of the distribution of moisture values of the grain K.

  First, in step 100, it is determined whether or not the proportion of immature grains in the grain K is smaller than the immature grain threshold. If it is determined in step 100 that the proportion of immature grains in the grain K is larger than the immature grain threshold, it is determined in step 102 that the sized average moisture value of the grain K is less likely to decrease over time after the drying operation is stopped. As a result, immature grain correction and kurtosis correction are not performed.

  On the other hand, if it is determined in step 100 that the proportion of immature grains in the grain K is equal to or less than the immature grain threshold, the kurtosis of the moisture value distribution of the grain K is lower than the kurtosis threshold in step 104. It is determined whether or not. If it is determined in step 104 that the kurtosis of the moisture value distribution of the grain K is higher than the kurtosis threshold value, in step 102, the sized average moisture value of the grain K is less likely to decrease with the passage of time after the drying operation is stopped. Therefore, immature grain correction and kurtosis correction are not performed.

  If it is determined in step 104 that the kurtosis of the moisture value distribution of the grain K is equal to or less than the kurtosis threshold value, in step 106, the sized average moisture value of the grain K over time after the drying operation is stopped. Is likely to fall, and immature grain correction and kurtosis correction are performed.

That is, assuming that the total average moisture value of the grain K is X, k is a coefficient that varies according to X, and A and B are constants, the immature grain correction value M is
M = k × (A−B × X)
It is said.

Further, if the kurtosis of the distribution of moisture value of the grain K is Y and C and D are constants, the kurtosis correction value N is
N = (C−Y) × D
It is said.

  Thereby, as shown in FIG. 4, the immature grain correction value and the kurtosis correction value are subtracted from the sized average moisture value of the grain K (solid line in FIG. 4), and the predicted average moisture value of the grain K (broken line in FIG. 4). ) Is calculated. Further, the drying operation is stopped when the predicted average moisture value of the cereal K reaches the target sized average moisture value (eg, 14.8%) of the cereal K. As a result, after the drying operation is stopped, the sized average moisture value of the cereal K is lowered with the passage of time and easily becomes the targeted sized average moisture value of the cereal K, and the cereal K is overdried. Can be prevented.

  Further, as shown in FIG. 5 (A), the control panel 84 displays a sized average moisture value (for example, 15.8%) of the grain K, and “the moisture can be reduced by about 1% after the drying process is completed. Is displayed (notification, warning). Thereby, the user can recognize that the sized average moisture value of the grain K is lowered after the drying operation is stopped, the user can be alerted during the drying operation, and the drying operation is stopped early. Can also give the user a sense of security. Moreover, the user can be made aware that the sized average moisture value of the grain K changes after the drying operation is stopped.

  In the present embodiment, the display of FIG. 5A is performed on the operation panel 84. However, the display of FIG. 5B may be performed on the operation panel 84. That is, in FIG. 5B, after the drying operation is stopped on the operation panel 84, the predicted average moisture value of the grain K (for example, 14.8%) is displayed, and “There is a possibility that moisture will decrease over time. "Stopped 1.0% earlier" is displayed (notification, warning).

  In the present embodiment, the predicted average moisture value of the grain K is calculated during the drying operation. However, the predicted average moisture value of the grain K may be calculated during the circulating operation.

It is sectional drawing seen from the front which shows the grain drying apparatus which concerns on embodiment of this invention. It is sectional drawing seen from the left which shows the grain drying apparatus which concerns on embodiment of this invention. It is a flowchart which shows the calculation process of the estimated average moisture value of the grain in the grain drying apparatus which concerns on embodiment of this invention. It is a graph which shows the time change of the sized average moisture value (solid line) of the grain K and the estimated average moisture value (broken line) of the grain in the grain drying apparatus which concerns on embodiment of this invention. (A) is a figure which shows the display of the operation panel in the grain drying apparatus which concerns on embodiment of this invention, (B) is a figure which shows another example of the display of the said operation panel.

Explanation of symbols

10 Grain drying device 12 Airframe (device main body)
84 Operation panel (prediction means, notification means)
86 Moisture measuring device (detection means)
K grain

Claims (3)

An apparatus body for drying the grains;
Detecting means for detecting moisture in the grain;
A prediction means connected to the detection means for predicting an average moisture value of the grain after the processing is stopped by using at least one of a ratio of immature grains in the grain and a kurtosis in the moisture distribution of the grain;
Grain drying equipment with.   2. The grain drying according to claim 1, wherein the grain processing is automatically stopped when the average moisture value of the grain after the processing stopped predicted by the predicting means reaches the target average moisture value of the grain. apparatus.   The grain drying apparatus according to claim 1 or 2, further comprising a notifying means connected to the predicting means for notifying that the average moisture value of the grain changes after the grain processing is stopped.

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