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WO2017179662A1 - Séchoir et dispositif d'analyse spectroscopique pour séchoir - Google Patents

Séchoir et dispositif d'analyse spectroscopique pour séchoir Download PDF

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Publication number
WO2017179662A1
WO2017179662A1 PCT/JP2017/015155 JP2017015155W WO2017179662A1 WO 2017179662 A1 WO2017179662 A1 WO 2017179662A1 JP 2017015155 W JP2017015155 W JP 2017015155W WO 2017179662 A1 WO2017179662 A1 WO 2017179662A1
Authority
WO
WIPO (PCT)
Prior art keywords
grain
transmission plate
unit
light
dryer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/015155
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English (en)
Japanese (ja)
Inventor
森本　進
黒田　忠宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to PH1/2018/502200A priority Critical patent/PH12018502200B1/en
Priority to CN201780023223.1A priority patent/CN109073545B/zh
Publication of WO2017179662A1 publication Critical patent/WO2017179662A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content

Definitions

  • the present invention relates to a dryer for drying harvested grains such as rice (rice), wheat, rice bran, rice cake, buckwheat, and beans, and a spectroscopic analyzer for the dryer.
  • harvested grains such as rice (rice), wheat, rice bran, rice cake, buckwheat, and beans
  • a spectroscopic analyzer for the dryer.
  • Grains such as straw and wheat are harvested with an agricultural machine such as a combine harvester, and the harvested grains are transferred to a transport vehicle and then transported to a processing facility such as a rice center or country elevator for shipment at the processing facility. It is processed. In the processing facility, a process of drying the grains is performed.
  • a process of drying the grains is performed.
  • the dryer disclosed in Patent Document 1 includes a drying unit that dries the grain and a moisture meter that measures the moisture content of the grain that has passed through the drying unit.
  • the moisture meter has two electrode rolls that detect the electrical resistance when crushing the grain by rotation and crushing.
  • the moisture content of the grain is measured by calculating the moisture value in the detected electrical resistance value.
  • the grain after the moisture content is measured is discarded.
  • a destructive moisture meter is used to measure the moisture content of the grain that has passed through the drying section by crushing (breaking) the sampled grain between two electrode rolls.
  • This has the following problems. As described above, when a grain is crushed between two electrode rolls, a grain loss (debris) occurs every time the moisture content of the grain is measured. Moreover, since the crushed grain adheres to an electrode roll, there is a possibility that the measurement accuracy is lowered due to adhesion.
  • the grain adhered to the electrode roll after crushing the grain and measuring the moisture of the grain until the next measurement of the moisture of the grain. It is necessary to perform cleaning or the like to remove the material. Therefore, there is a limit to shortening the measurement interval. Therefore, it is difficult to measure the moisture content of grains with a conventional dryer. In particular, it is difficult to increase the frequency in a high moisture region.
  • the measurement interval is long (the number of measurements is small), it is difficult to accurately grasp the variation in moisture content of the grains in the dryer (drying unevenness).
  • the number of measurements is small and there are grains with extremely high moisture content or grains with extremely low moisture content, the moisture content of these grains is representative of the moisture content of the dried grains. Since it becomes a value, it may be unable to dry appropriately.
  • the grain dryer controls the drying rate (controls the drying speed) based on the measurement result of the moisture content of the grain.
  • the target drying rate is secured by controlling the burner, which is a heat source for drying grains. Therefore, unless the variation in moisture content of the grains in the dryer (drying unevenness) cannot be accurately grasped, it is impossible to grasp the exact drying rate that is the basis of the burner control. Moreover, if it is difficult to accurately grasp the drying rate and the average moisture content of the grains in the dryer, the accuracy of the expected time when the dryer is terminated is deteriorated.
  • an object of the present invention is to provide a drier and a spectroscopic analyzer for the drier that can solve the problems related to conventional grain drying.
  • the dryer according to the present invention includes a drying unit that dries the grain, and a spectroscopic analysis device that measures a moisture content of the flowing grain that has passed through the drying unit by spectroscopic analysis.
  • the spectroscopic analysis device passes the grain.
  • a transmission plate having a transmission surface that transmits light, a light projecting unit that irradiates light to the transmission plate from the opposite side of the transmission surface, and reflected light of the grain that passes through the transmission surface.
  • a light receiving portion that receives light through the transmission plate, and the passage surface is flush with the light projecting portion and the light receiving portion.
  • the dryer includes a wall portion provided with the spectroscopic analysis device, the wall portion including a guide surface that is a surface through which the grain flows, and an opening portion that penetrates the wall portion and in which the transmission plate is disposed.
  • the spectroscopic analyzer includes a presser plate that presses the transmission plate and is substantially flush with the guide surface.
  • the passage surface is substantially flush with the guide surface.
  • the dryer includes a wall portion on which the spectroscopic analysis device is provided, and includes a wall portion having a guide surface that is a surface through which the grain flows.
  • the spectroscopic analysis device includes the light projecting unit, the light receiving unit, and a passage surface. And a case that is substantially flush with the guide surface.
  • the spectroscopic analyzer includes a presser plate that holds the transmission plate and is substantially flush with the case.
  • the passage surface is substantially flush with the case.
  • the spectroscopic analyzer has a holding portion that protrudes from the case and holds the transmission plate, and has a holding surface that has an inclined surface inclined from the edge side of the transmission plate.
  • the spectroscopic analyzer includes a plurality of measurement units including the light projecting unit, the light receiving unit, and the transmission plate.
  • the spectroscopic analyzer is a measuring unit having the light projecting unit, the light receiving unit, and the transmission plate, and has a horizontally long measuring unit that intersects the direction in which the grain flows.
  • the dryer includes a drying unit that dries the grain, and a spectroscopic analysis device that measures the moisture content of the flowing grain that has passed through the drying unit by spectroscopic analysis.
  • the spectroscopic analysis device is a flat unit through which the grain passes.
  • a transmission plate having a passage surface and capable of transmitting light, a light projecting unit for irradiating the grain passing through the passage surface, and a light receiving unit for receiving reflected light of the grain passing through the passage surface
  • One of the light projecting unit or the light receiving unit is provided on the opposite side of the transmission plate from the passage surface.
  • the transmission plate is a flat plate material.
  • the transmission plate includes a first plate corresponding to the light projecting unit and a second plate corresponding to the light receiving unit.
  • the spectroscopic analyzer is a near infrared moisture meter.
  • the spectroscopic analyzer for a dryer is a spectroscopic analyzer that measures the moisture content of grain by spectroscopic analysis, and has a transmission surface through which the grain passes and transmits light, and the passage.
  • a light projecting unit that irradiates light to the transmission plate from the opposite side of the surface, and a light receiving unit that receives reflected light of the grain passing through the transmission surface through the transmission plate, It is flush with the light projecting unit and the light receiving unit.
  • the spectroscopic analyzer for a dryer is a wall portion having a guide surface that is a surface through which grains flow, and is attached to a wall portion that has an opening that passes through the wall portion and in which the transmission plate is disposed.
  • the spectroscopic analyzer for a dryer is a pressing plate that presses the transmission plate, and includes a pressing plate whose end surface is substantially flush with the guide surface.
  • the passage surface of the spectroscopic analyzer for a dryer is substantially flush with the guide surface.
  • the spectroscopic analysis apparatus for a dryer includes a case provided with the light projecting unit, the light receiving unit, and a passage surface and substantially flush with the guide surface, and a wall portion having a guide surface that is a surface through which grain flows, The case is attached so as to be substantially flush with the guide surface.
  • the spectroscopic analyzer includes a press plate that presses the transmission plate and is substantially flush with the case.
  • the passage surface of the spectroscopic analyzer for a dryer is substantially flush with the case.
  • the spectroscopic analyzer for a dryer includes a holding unit that protrudes from the case and holds the transmission plate and has an inclined surface that is inclined from the edge side of the transmission plate.
  • the present invention has the following effects.
  • the spectroscopic analyzer includes a transmission plate having a passage surface through which the grain passes, and irradiates light on the grain on the transmission plate by a light projecting unit from the opposite side of the passage surface, and reflects the reflected light returned from the grain through the transmission plate.
  • the light receiving unit receives the light and measures the moisture content of the grain based on the received light. Therefore, by allowing the passage surface of the transmission plate to be flush with the light projecting portion and the light receiving portion, the grain passes while contacting the passage surface. Thereby, the reflected light returning from the grain can be stably received, and the moisture content of the grain can be accurately measured.
  • the moisture content of the grain is measured by spectroscopic analysis, it is possible to prevent the loss of grain due to the moisture measurement.
  • the grain does not adhere to the electrode roll as in the conventional case, the measurement accuracy due to the adhesion of the grain does not decrease, and high-precision measurement can be performed.
  • the measurement interval for measuring the moisture content of the grain can be shortened. When the measurement interval is shortened, the number of measurements can be increased. By increasing the number of measurements, even if there are grains with extremely high moisture content or grains with extremely low moisture content, only the moisture content of these grains is dried as before. It is possible to prevent the moisture content of the cereal from becoming a representative value, and it is possible to dry appropriately.
  • drying unevenness in the dryer since it is possible to accurately grasp the variation in the moisture content of the grains in the dryer (cereal drying unevenness in the dryer), for example, it is possible to accurately grasp the drying rate. Drying rate can be controlled with high accuracy. In addition, since the drying rate can be controlled with high accuracy, the accuracy of the predicted end time of drying is improved. In addition, since it is possible to accurately grasp the variation in moisture content of grains in the dryer (cereal drying unevenness in the dryer), it is easy to perform a process for reducing drying unevenness.
  • the moisture content of the grain can be measured with high frequency, and the moisture content of the grain can be measured at a short measurement interval. Further, since the moisture content of the grain is measured by spectroscopic analysis, even a high moisture content can be measured frequently. Moreover, by using a near-infrared moisture meter as a spectroscopic analyzer, the moisture content of grains can be accurately measured.
  • FIG. 1 and 2 show a dryer 1 for drying grains such as rice bran (rice), wheat, rice bran, rice bran, buckwheat, and beans.
  • FIG. 1 is a front view showing a schematic configuration of the dryer 1.
  • FIG. 2 is a side view showing a schematic configuration of the dryer 1.
  • the front is a direction from the back of the dryer 1 to the front, and the rear is a direction opposite to the front.
  • the right side is the right side toward the front of the dryer 1
  • the left side is the left side toward the front of the dryer 1.
  • the dryer 1 includes an input unit 2, a storage unit 3, a drying unit 4, a cereal collecting unit 5, a vertical feeding unit 6, a first horizontal feeding unit 7, a second horizontal feeding unit 8, and a spectroscopic analysis. And a device 9.
  • the input unit 2 has an input port 2A for inputting grains to be dried, and is composed of a hopper or the like.
  • the storage part 3, the drying part 4, and the grain collection part 5 are provided in the drying tank 10 formed in the box shape.
  • the storage unit 3 is a room for storing grains to be dried, and is provided in an upper part of the drying tank 10.
  • the drying unit 4 is a device that dries the grains with heat, warm air, or the like, and is provided in the drying tank 10 below the storage unit 3.
  • the storage unit 3 and the drying unit 4 communicate with each other, and the grains stored in the storage unit 3 flow to the drying unit 4.
  • the drying section 4 includes a front wall 4A, a back wall 4B, a plurality of air supply drums 4C, and a plurality of air exhaust drums 4D.
  • the plurality of air supply drums 4C and the plurality of air exhaust drums 4D are provided between the front wall 4A and the back wall 4B.
  • the plurality of air supply drums 4C and the plurality of air exhaust drums 4D are provided alternately from left to right.
  • a space between the air supply drum 4C and the exhaust wind drum 4D is a drying path 4E through which the grains of the storage unit 3 flow.
  • the air supply drum 4C and the air discharge drum 4D are formed of a perforated plate and can be ventilated.
  • Hot air is supplied to the air supply drum 4C.
  • the supplied hot air is discharged from the air supply drum 4C to the drying path 4E.
  • the hot air discharged to the drying path 4E is discharged from the exhaust wind drum 4D. Thereby, the grain in the drying path 4E is dried.
  • the cereal collecting unit 5 is provided in a drying tank 10 below the drying unit 4.
  • the drying unit 4 and the cereal collecting unit 5 communicate with each other, and the grains in the drying unit 4 flow to the cereal collecting unit 5.
  • the cereal collecting unit 5 includes a cereal collecting member 11, a heel part 12, a plurality of guide members 13a, 13b, and 13c, and a plurality of feeding rolls 14a, 14b, 14c, and 14d.
  • the grain collecting member 11 includes a front plate 11A continuous with the front wall 4A of the drying unit 4 and a back plate 11B continuous with the back wall 4B of the drying unit 4.
  • the lower part of the grain collecting member 11 is formed so as to gradually become narrower as the distance between the front plate 11A and the back plate 11B goes downward.
  • the flange 12 includes a bottom plate 12A, a front plate 12B that connects the front end of the bottom plate 12A and the lower end of the front plate 11A, and a rear plate 12C that connects the rear end of the bottom plate 12A and the lower end of the back plate 11B. ing.
  • the eaves part 12 is formed in an upwardly open shape and communicates with the cereal collecting member 11.
  • the plurality of guide members 13 a, 13 b, and 13 c are provided above the cereal collecting member 11 and below the drying unit 4. Further, the plurality of guide members 13a, 13b, and 13c are provided side by side between the front plate 11A and the back plate 11B of the grain collecting member 11.
  • the plurality of guide members 13a, 13b, and 13c guide the grains flowing down from the drying unit 4 to the upper surfaces of the front plate 11A and the back plate 11B of the grain collection member 11.
  • the plurality of feeding rolls 14a, 14b, 14c, and 14d are provided below the guide members 13a, 13b, and 13c, and rotate to feed the grains below the guide members 13a, 13b, and 13c downward. Grains fed from a plurality of feeding rolls 14 a, 14 b, 14 c, 14 d are collected to the heel part 12 at the lower part of the grain collecting part 5.
  • the vertical feed unit 6 is a device that transports the grain put into the feeding unit 2 and the grain fed by the first lateral feed unit 7 upward, and is provided on the side of the drying tank 10.
  • the vertical feed unit 6 includes a box-shaped casing 16 that is long in the vertical direction, and a transport unit 17 provided inside the casing 16.
  • the transport unit 17 is provided on the upper sprocket 17A disposed on the upper portion of the casing 16, the lower sprocket 17B disposed on the lower portion of the casing 16, the belt 17C wound around the upper and lower sprockets 17A and 17B, and the belt 17C. Bucket 17D.
  • the conveyance part 17 the front part is made into the downward side, and the rear part is made into the raise side.
  • the transport unit 17 rotates the upper sprocket 17A or the lower sprocket 17B with a drive motor or the like (not shown) to move the belt 17C, so that the grain at the lower part of the casing 16 is crushed by the bucket 17D and transported to the upper part of the casing 16.
  • the casing 16 includes a first wall 16A that covers the front side of the transport unit 17, a second wall 16B that covers the back side of the transport unit 17, a third wall 16C that covers the side surface of the transport unit 17 on the drying tank 10 side, 4th wall 16D which covers the side opposite to the drying tank 10 side of the conveyance part 17, 5th wall 16E which covers the upper part of the conveyance part 17, 6th wall 16F which covers the downward direction of the conveyance part 17, and a conveyance part 17 and a discharge portion 19 provided on the front side of the upper portion.
  • a space is provided between the upper end of the first wall 16A and the fifth wall 16E.
  • the discharge part 19 has an open rear part and communicates with the upper part of the accommodation space of the transport part 17. Therefore, the grain conveyed to the upper part of the casing 16 by the bucket 17D is released to the discharge part 19 when the bucket 17D is reversed.
  • the discharge part 19 includes an upper wall 19A, a contact wall 19B, a first side wall 19C, a second side wall 19D, and a guide wall 19E.
  • the upper wall 19A extends forward from the fifth wall 16E.
  • the contact wall 19B extends downward from the front end of the upper wall 19A.
  • the upper part of the contact wall 19B is inclined so as to move forward as it goes downward.
  • the lower part of the contact wall 19B is formed along the vertical direction.
  • the first side wall 19C extends forward from the upper part of the third wall 16C.
  • the second side wall extends forward from the upper part of the fourth wall 16D.
  • the guide wall 19E extends in an inclined direction that moves downward from the upper end of the first wall 16A toward the front.
  • a space is provided between the lower end of the guide wall 19E and the lower end of the contact wall 19B, and the front lower end of the discharge portion 19 is a discharge port 19F opened downward. . Therefore, the grains released from the transport unit 17 to the discharge unit 19 mainly fall in contact with the contact wall 19B and are discharged from the discharge port 19F. Moreover, a part of the grain slides down directly or on the guide wall 19E and is discharged from the discharge port 19F.
  • the first lateral feed unit 7 is a device that laterally feeds the grains collected at the lower part of the grain collecting unit 5 to the lower part of the vertical feed unit 6.
  • the first lateral feed unit 7 includes a screw 20 (referred to as a first screw) capable of laterally feeding grain, and a flow passage 21 for flowing the grain laterally fed by the first screw 20 to the longitudinal feed unit 6.
  • the left part of the first screw 20 is disposed in the collar part 12 and provided along the collar part 12.
  • the right part of the first screw 20 protrudes from the flange part 12 and is provided to the front side of the lower part of the vertical feed part 6.
  • the flow passage 21 connects the lower part of the drying tank 10 and the casing 16.
  • the flow passage 21 is a passage that connects the flange portion 12 and the lower portion of the first wall 16 ⁇ / b> A of the casing 16.
  • the flow passage 21 accommodates a portion protruding from the flange portion 12 of the first screw 20.
  • the first screw 20 can feed the grain in the heel part 12 toward the flow passage 21 by rotating by a driving force such as a driving motor.
  • the flow passage 21 includes a chute portion 22 that communicates with the lower portion of the casing 16, and a communication portion 23 that communicates (connects) the flange portion 12 and the chute portion 22. Therefore, the grain sent by the first screw 20 reaches the chute portion 22 through the communication portion 23 and is supplied from the chute portion 22 to the lower portion of the casing 16.
  • the chute unit 22 is connected to the feeding unit 2, and the grains thrown into the feeding unit 2 are supplied from the chute unit 22 to the lower part of the casing 16.
  • the chute portion 22 has an upper wall 22A, a vertical wall 22B, and a bottom wall 22C. Further, the left side surface of the chute portion 22 is blocked by the left side wall 22D. The right side surface of the chute portion 22 is blocked by the right side wall 22E (see FIG. 1). The rear part of the chute 22 is open rearward. This rear opening portion is a discharge opening 22F for discharging the grain.
  • a receiving port 24 for receiving grain is formed in the lower portion of the first wall 16A of the casing 16.
  • the receiving port 24 communicates with the discharge opening 22F.
  • the upper wall 22A protrudes forward from the upper edge of the receiving port 24.
  • the vertical wall 22B extends downward from the front end of the upper wall 22A.
  • the bottom wall 22C includes an extending portion 22Ca that extends rearward from the lower end of the vertical wall 22B, and an inclined portion 22Cb that extends from the rear end of the extending portion 22Ca over the lower edge of the receiving port 24.
  • the inclined portion 22Cb has an inclined shape that moves downward as it approaches the first wall 16A. That is, the flow passage 21 has an inclined surface 22 ⁇ / b> G that moves downward as it approaches the casing 16.
  • the end of the inclined surface 22G is connected to the lower edge of the receiving port 24.
  • the width of the inclined surface 22G is set to be substantially the same as the width of the lower portion of the casing 16. Therefore, when the grain flowing through the flow passage 21 reaches the inclined surface 22G, the grain falls to the lower part of the casing 16 while sliding on the inclined surface 22G. Therefore, on the inclined surface 22G, the grains are likely to spread uniformly, and the thickness of the grain layer at the time of carrying the grains is a place where the inclined surface 22G tends to be thin.
  • the communication portion 23 is formed in a cylindrical shape that covers the upper, lower, front, and rear of the first screw 20.
  • the communication part 23 is open to the left and right.
  • the left end of the communication portion 23 communicates with the flange portion 12.
  • the right end of the communication portion 23 communicates with the inside of the chute portion 22 through an opening 26 formed in the left side wall 22D of the chute portion 22.
  • the second lateral feed unit 8 is a device that transports the grain discharged from the upper part of the vertical feed part 6 to the upper part of the storage part 3.
  • the second lateral feed unit 8 includes a screw (referred to as a second screw) 27 and a screw case 28 that accommodates the second screw 27.
  • the screw case 28 is provided from the discharge part 19 of the vertical feed part 6 to the middle part of the storage part 3.
  • the right side of the screw case 28 is connected to and communicates with the discharge port 19F of the vertical feed unit 6, and the grain discharged from the discharge port 19F is supplied into the screw case 28.
  • the grain supplied to the screw case 28 is transported to the storage unit 3 by the second screw 27.
  • Grains conveyed to the storage unit 3 by the second screw 27 are stored in the storage unit 3 from the first opening 36 formed in the middle part 28A of the screw case 28 and the second opening 37 formed in the left end of the screw case 28. Is discharged.
  • the cereal is circulated from the storage unit 3 to the storage unit 3 through the drying unit 4, the cereal collecting unit 5, the first lateral feed unit 7, the vertical feed unit 6, and the second lateral feed unit 8. This circulation is repeated until the moisture content of the grain reaches the target moisture content.
  • the 1st horizontal feed part 7 which cross-feeds the grain after drying, the vertical feed part 6 which sends the grain sent by the 1st horizontal feed part 7 upwards, and the grain sent to the upper part of the vertical feed part 6 are stored.
  • a circulation part is constituted by the second lateral feed part 8 to be sent to the part 3.
  • This circulation unit is a device that circulates grains, and is a device that sends the grains dried by the drying unit 4 to the storage unit 3 or sends the grains input to the input unit 2 to the storage unit 3.
  • the spectroscopic analyzer (a spectroscopic analyzer for a dryer) 9 is an apparatus that measures the moisture content of at least the grain dried by the drying unit 4 (the flowing grain that has passed through the drying unit 4) by spectroscopic analysis.
  • the spectroscopic analyzer 9 may be any device that measures at least the moisture content of grains, and may be a device that measures the characteristics of grains other than moisture together with the moisture content of grains.
  • the spectroscopic analyzer 9 is a device that measures the moisture content of the flowing grain by spectroscopic analysis, and measures the moisture content of the grain by examining the spectrum of light emitted or absorbed by the grain.
  • the spectroscopic analyzer examples include a near-infrared moisture meter, a mid-infrared spectrophotometer, an ultraviolet-visible spectrophotometer, and a Raman spectrophotometer.
  • the spectroscopic analyzer may be an apparatus other than those exemplified as long as it can measure the moisture content of grains by spectroscopic analysis.
  • a near-infrared moisture meter is a device that measures moisture in grains by near-infrared spectroscopy, and irradiates grains with near-infrared light and measures the reflectance of the grains. It is an apparatus for measuring moisture (water content), which is one of the characteristics.
  • a mid-infrared spectrophotometer is a device that measures the moisture content of grains by spectroscopic analysis using infrared light in the mid-infrared region.
  • An ultraviolet-visible spectrophotometer is a device that measures the moisture content of grains by spectroscopic analysis using light regions in the ultraviolet region and the visible region.
  • the Raman spectroscopic device is a device that irradiates a grain with a laser and measures the moisture content of the grain from the generated Raman scattered light.
  • a near-infrared moisture meter is adopted as the spectroscopic analyzer 9 (the spectroscopic analyzer 9 is a near-infrared moisture meter).
  • the spectroscopic analyzer 9 (near infrared moisture meter) is provided in the first lateral feed section 7 that laterally feeds the grain after drying.
  • the moisture content of the grain fed laterally after drying is accurately measured.
  • the spectroscopic analyzer 9 is provided in the flow path 21 of the first lateral feed unit 7 and in the inclined part (wall part) 22Cb of the bottom wall 22C.
  • An inclined surface 22G that is the upper surface of the inclined portion 22Cb is a guide surface through which the grain G1 flows in the Y1 direction. That is, the dryer 1 has a wall portion (inclined portion 22Cb) having a guide surface 22G that is a surface through which the grain flows.
  • the spectroscopic analyzer 9 measures the moisture content of the grain G1 flowing through the guide surface 22G.
  • the spectroscopic analyzer 9 includes at least a case 31 and a measurement unit 32.
  • the case 31 is disposed below the inclined portion (wall portion) 22Cb.
  • the case 31 is formed in a rectangular box shape having an upper wall 31A facing the lower surface of the inclined portion 22Cb.
  • the upper wall 31A of the case 31 is attached to the inclined portion (wall portion) 22Cb.
  • the upper wall 31A of the case 31 is formed with an insertion hole 33 (consisting of an annular edge) made of a circular hole penetrating the upper wall 31A.
  • the insertion hole 33 is inserted through the upper side of the measurement unit 32. That is, the upper side of the measurement unit 32 protrudes from the upper surface (one end surface) 31B of the upper wall 31A of the case 31.
  • the inclined portion 22Cb has an opening 34 that penetrates the inclined portion 22Cb (wall portion).
  • the opening 34 is formed of a circular hole (consisting of an annular edge) and is formed at a portion corresponding to the measurement unit 32.
  • the upper side of the measurement unit 32 (a transmission plate 36, an upper wall 37A of the first holding unit 37, and a press plate 38) to be described later is inserted into the opening 34.
  • the measurement unit 32 includes a transmission plate 36, a holding unit (referred to as a first holding unit) 37, a presser plate 38, a light projecting unit 41, and a light receiving unit.
  • the transmission plate 36 is a plate material through which light can pass.
  • the transmission plate 36 is formed of, for example, a glass plate that is a flat and transparent (including translucent) plate material.
  • the transmission plate 36 may be a plate material through which light can pass, and may be formed of, for example, a resin plate.
  • the transmission plate 36 is disposed in the opening 34 so that the plate surface faces up and down. That is, the inclined portion 22Cb has an opening 34 in which the transmission plate 36 is disposed.
  • the transmission plate 36 is formed in a rectangular shape that is long in the flow direction Y1, which is the direction in which the grain G1 flows.
  • the transmission plate 36 is disposed so as to be inclined at the same angle as the inclination angle of the inclined portion 22Cb.
  • the upper surface of the transmission plate 36 is a passage surface 36A through which the grain G1 flowing through the guide surface 22G passes.
  • the passage surface 36A is a flat surface.
  • the angle of the transmission plate 36 may be different from the inclination angle of the inclined portion 22Cb.
  • the first holding portion 37 is a member that holds the transmission plate 36.
  • the upper part of the first holding part 37 is inserted through the insertion hole 33 and protrudes upward from the upper wall 31A. That is, the first holding portion 37 protrudes from the upper surface (one end surface) 31 ⁇ / b> B of the case 31.
  • the first holding part 37 will be described in detail.
  • the first holding part 37 has an upper wall 37A, a peripheral wall 37B, a first flange 37C, and a second flange 37D.
  • the upper wall 37A is formed in a circular shape having an outer diameter substantially coinciding with the inner diameter of the opening 34, and is located in the opening 34 (inserted into the opening 34 from below).
  • the upper wall 37A is formed with a recess 37F that is recessed downward from the upper surface 37E.
  • the recess 37F is formed in a rectangular shape that substantially matches the transmission plate 36.
  • a transmission plate 36 is inserted into the recess 37F.
  • the depth of the recess 37 ⁇ / b> F is formed to be approximately the same as the thickness of the transmission plate 36. Therefore, the upper surface 37E of the upper wall 37A and the upper surface (passage surface 36A) of the transmission plate 36 are substantially flush.
  • the upper wall 37 has a first through hole 40a and a second through hole 40b.
  • the first through hole 40a and the second through hole 40b are formed by circular holes (annular edge portions) penetrating the upper wall 37, and are formed in a portion corresponding to the concave portion 37F (a portion corresponding to the bottom portion of the concave portion 37F). Is formed.
  • the first through holes 40a and the second through holes 40b are provided side by side in the flow direction Y1.
  • the first through hole 40a is located on the upstream side in the flow direction Y1 of the second through hole 40b.
  • first through hole 40a and the second through hole 40b are formed with an interval in the flow direction Y1, and a shielding part 37G is provided between the first through hole 40a and the second through hole 40b. ing.
  • two screw holes 39a and 39b are provided on the upper surface side of the upper wall 37A so as to sandwich the recess 37F.
  • the peripheral wall 37B is formed in a cylindrical shape that protrudes downward from the outer peripheral side of the lower surface of the upper wall 37A.
  • a cylindrical recessed portion 50 that is recessed upward from below is formed by the inner peripheral surface of the peripheral wall 37B and the lower surface of the upper wall 37A.
  • the first flange 37C protrudes radially outward from the outer surface of the peripheral wall 37B.
  • the first flange 37 ⁇ / b> C is inserted through the insertion hole 33.
  • the outer diameter of the first flange 37 ⁇ / b> C is formed to have substantially the same dimension as the inner diameter of the insertion hole 33.
  • On the upper surface of the first flange 37C an annular ridge portion 37H that contacts the lower surface of the inclined portion 22G is provided.
  • a lower portion of the first flange 37C protrudes downward from the insertion hole 33.
  • the second flange 37D protrudes radially outward from the lower portion of the first flange 37C.
  • the upper surface of the second flange 37D is in contact with the lower surface of the upper wall 31A of the case 31.
  • the presser plate 38 is a member that presses the transmission plate 36 and is a circular plate material that fixes the transmission plate 36 to the first holding portion 37.
  • the outer diameter of the pressing plate 38 is formed to have the same dimension as the outer diameter of the upper wall 37 ⁇ / b> A of the first holding portion 37.
  • the presser plate 38 is inserted into the upper portion of the opening 34 and overlapped with the upper wall 37A.
  • An upper surface (end surface) 38A of the pressing plate 38 is substantially flush with the guide surface 22G.
  • the upper surface 38A of the presser plate 38 is a guide surface for guiding the grain.
  • the holding plate 38 has an opening 47 and two screw insertion holes 48a and 48b.
  • the opening 47 is a hole that penetrates the presser plate 38 and is configured by an annular edge.
  • the opening 47 is a rectangular hole corresponding to the transmission plate 36 and smaller than the outer shape of the transmission plate 36.
  • the first through hole 40 a and the second through hole 40 b are located within the range of the opening 47 (inside the edge of the opening 47).
  • the pressing plate 38 is fixed to the upper wall 37A by two screws 49a and 49b.
  • the screw 49a is inserted into the screw hole 39a through the screw insertion hole 48a.
  • the screw 49b is inserted into the screw hole 39b through the screw insertion hole 48b.
  • the light projecting unit 41 is configured by an end portion of a first cable member 45 having a bundle of optical fibers.
  • the first cable member 45 is connected to a light source unit (not shown) provided in the case 31. Light including near infrared rays supplied from the light source unit is guided to the first cable member 45, reaches the light projecting unit 41, and is irradiated from the light projecting surface 41 ⁇ / b> A that is the end surface of the light projecting unit 41.
  • the light projecting unit 41 is disposed below the opening 34 and the transmission plate 36 and is in contact with the lower surface of the upper wall 37A. Moreover, the light projection part 41 is arrange
  • the light projecting unit 41 irradiates light (near infrared rays) to the transmission plate 36 from the opposite side of the passage surface 36A. That is, the light irradiated from the light projecting surface 41A toward the transmission plate 36 passes through the first through hole 40a and the transmission plate 36, and passes through the passage surface 36A (moves on the passage surface 36A) to the grain G1. Irradiated.
  • the light receiving unit 42 is configured by an end portion of a second cable member 46 having a bundle of optical fibers.
  • the second cable member 46 is connected to a grain evaluation unit (not shown) provided in the case 31.
  • the light receiving unit 42 is disposed below the opening 34 and the transmission plate 36 and is in contact with the lower surface of the upper wall 37A. Further, the light receiving part 42 is disposed at a position where the light receiving surface 42A corresponds to the second through hole 40b. In other words, the light receiving surface 42A faces the transmission plate 36 through the second through hole 40b.
  • the light receiving unit 42 receives the reflected light of the grain G1 passing through the passage surface 36A through the transmission plate 36. That is, the reflected light including near infrared rays irradiated from the light projecting unit 41 to the grain G1 and returned from the grain G1 enters the light receiving unit 42 from the light receiving surface 42A that is the end surface of the light receiving unit 42.
  • the reflected light received by the light receiving unit 42 is guided to the second cable member 46 and reaches the grain evaluation unit.
  • the grain evaluation unit calculates the moisture content of the grain by spectroscopic analysis (near infrared spectroscopy) based on the reflected light (near infrared) received by the light receiving unit 42.
  • optical fibers are used for the light projecting unit 41 and the light receiving unit 42, but other optical fibers may be used.
  • a light source such as an LED is provided at the tip of the light projecting unit 41 (passing surface 36 ⁇ / b> A side), the light source is irradiated on the grain G 1, and transmitted or scattered light (reflected light) of the grain G 1 is received by the light receiving unit 42.
  • transmitted or reflected light may be introduced into the grain evaluation unit.
  • the second holding unit 43 is a member that holds the light projecting unit 41 and the light receiving unit 42.
  • the second holding part 43 has a first part 43A and a second part 43B.
  • parts are cylindrical shape, Comprising: It inserts in the recessed part 50 (circumferential wall 37B).
  • the second part 43B is located below the first part 43A and has a cylindrical shape having a diameter larger than that of the first part 43A.
  • the second part 43 ⁇ / b> B is in contact with the lower surface of the first holding part 37.
  • the second holding part 43 has a first holding hole 43C and a second holding hole 43D.
  • the first holding hole 43C is a hole that penetrates the first part 43A and the second part 43B, and the light projecting portion 41 is inserted through the first holding hole 43C.
  • the second holding hole 43D is a hole that penetrates the first part 43A and the second part 43B, and the light receiving part 42 is inserted into the second holding hole 43D.
  • the mounting plate 44 is a member that fixes the first holding portion 37 and the second holding portion 43 to the upper wall 31 ⁇ / b> A of the case 31.
  • the mounting plate 44 is in contact with the lower surface of the second holding portion 43.
  • the attachment plate 44 is attached to an attachment portion provided on the upper wall 31A of the case 31 with a bolt.
  • the first holding part 37 and the second holding part 43 are attached to the case 31 by the attachment plate 44.
  • the transmission plate 36 is formed of a flat glass plate as described above. Therefore, the passage surface 36 ⁇ / b> A is flush with the light projecting unit 41 and the light receiving unit 42.
  • the passage surface 36 flush across the light projecting unit 41 and the light receiving unit 42, the grain passes from the light projecting unit 41 to the light receiving unit 42 while contacting the passage surface 36A. Thereby, the reflected light returning from the grain can be received stably, and the moisture content of the grain can be measured with high accuracy (stable).
  • the measuring unit 32 includes a shielding unit 37G in order to suppress the light emitted from the light projecting unit 41 from directly entering the light receiving unit 42.
  • a shielding unit 37G By arranging the transmission plate 36 above the shielding part 37G (on the side opposite to the arrangement side of the light projecting part 41 and the light receiving part 42), when the grain reaches the light receiving part 42 from the light projecting part 41, the shielding part 37G is provided. It flows smoothly without being caught. Thereby, a moisture measurement with high accuracy can be performed.
  • an opening 34 is provided in the inclined wall 22Cb, which is a wall portion on which the spectroscopic analyzer 9 is provided, and the transmission plate 36 is disposed in the opening 34, so that the grain flowing through the guide surface 22G is smoothly transferred to the passage surface 36A. Can be passed through.
  • the spectroscopic analyzer 9 measures the moisture content of the grain flowing through the guide surface 22G. According to this, the water content of the grain flowing through the inclined portion 22Cb (guide surface 22G) while spreading uniformly can be measured by the spectroscopic analyzer 9. That is, the water content in the majority of the grains circulating after drying can be measured by the spectroscopic analyzer 9.
  • the lower end part of the insertion part 2 (hopper) is provided above the inclined part 22Cb.
  • the lower end portion of the hopper is connected to the upper wall 22A facing the inclined portion 22Cb. Since the hopper is provided above the inclined portion 22Cb and the spectroscopic analyzer 9 is provided on the inclined portion 22Cb, the moisture content of the cereal (cereal before drying) immediately after the introduction of the hopper can be measured by the spectroscopic analyzer 9.
  • the moisture content of the grain flowing through the inclined portion 22Cb (guide surface 22G) after drying can be measured.
  • FIG. 9 to 14 show another embodiment different from the first embodiment shown in FIGS.
  • FIG. 9A shows a second embodiment.
  • the transmission plate 36 has a first part 36B that fits into the recess 37F and a second part 36C that extends upward from the first part 36B and fits into the opening 47.
  • An upper surface of the second portion 36C is a passage surface 36A.
  • the thickness of the second portion 36 ⁇ / b> C is substantially the same as the thickness of the presser plate 38. Therefore, the passage surface 36A is substantially flush with the guide surface 22G and the pressing plate 38.
  • FIG. 9B shows a third embodiment.
  • the third embodiment is different from the first embodiment in that the transmission plate 36 includes a first plate 36D corresponding to the light projecting unit 41 and a second plate 36E corresponding to the light receiving unit 42.
  • the transmission plate 36 is obtained by dividing the plate material constituting the transmission plate 36 into a first plate 36D and a second plate 36E.
  • Other configurations are the same as those in the first embodiment. This configuration may be adopted in other embodiments.
  • FIG. 9C shows a fourth embodiment.
  • the transmission plate 36 is directly fixed to the upper wall 37A of the first holding portion 37, and the passage surface 36A is substantially flush with the guide surface 22G (no presser plate is provided). This is a difference from the first embodiment.
  • Other configurations are the same as those in the first embodiment.
  • the structure can be simplified.
  • 10 and 11A show a fifth embodiment.
  • the opening 34 is formed in a size that substantially matches the shape of the upper surface 31 ⁇ / b> B of the case 31, and the upper surface side of the case 31 is inserted into the opening 34.
  • the upper surface 31B of the case 31 is substantially flush with the guide surface 22G. Accordingly, the grain moving toward the case 31 with the guide surface 22G flows through the upper surface 31B of the case 31 and passes through the passage surface 36A. That is, the upper surface 31B of the case 31 is a guide surface for guiding the grain.
  • FIG. 10 and 11A show a fifth embodiment.
  • the first holding portion 37 is formed on the upper surface 37I that protrudes from the guide surface (one end surface) 31B of the case 31 through the insertion hole 33 and the lower surface of the upper wall 31A of the case 31. And a lower portion 37J to be in contact with.
  • the portion of the upper portion 37I that protrudes from the upper surface 31B of the case 31 gradually decreases in diameter as the outer shape goes from the guide surface (one end surface) 31B of the case 31 to the edge of the transmission plate 36 (edge of the holding plate 38). It is formed in a conical shape [conical shape with a flat top (a truncated cone)]. That is, the first holding portion 37 has an inclined surface 37K that is inclined from the edge side of the transmission plate 36 toward the guide surface (one end surface) 31B of the case.
  • Other configurations are the same as those in the first embodiment.
  • the transmission plate 36 has a first part 36B that fits into the recess 37F and a second part 36C that fits into the opening 47.
  • the first holding part 37 has the inclined surface 37K, the grain moving on the guide surface (upper surface) 31B of the case 31 passes through the inclined surface 37K and smoothly moves to the passage surface 36A. .
  • FIG. 11B shows a sixth embodiment.
  • the first holding portion 37 is formed in a columnar shape and disposed on the lower surface of the upper wall 31 ⁇ / b> A of the case 31.
  • the presser plate 38 is positioned in the insertion hole 33, and the upper surface (end surface) 38 ⁇ / b> A of the presser plate 38 is substantially flush with the guide surface (one end surface) 31 ⁇ / b> B of the case 31.
  • the upper surface (end surface) 38A of the presser plate 38 is a guide surface for guiding grain, and the guide surface 38 and the guide surface 31 of the case 31 are substantially flush with each other.
  • the transmission plate 36 is the same as the third embodiment in that it includes a first plate 36D and a second plate 36E. Further, the upper surface 31B of the case 31 is inserted into the opening 34, and the upper surface 31B is substantially flush with the guide surface 22G, as in the fifth embodiment. Other configurations are the same as those in the first embodiment.
  • FIG. 11C shows a seventh embodiment.
  • the seventh embodiment has a first portion 36B in which the transmission plate 36 is formed as a single plate and fits in the recess 37F, and a second portion 36C that fits in the opening 47 from the first portion 36B, and has a passage surface 36A. Is different from the sixth embodiment in that it is substantially flush with the guide surface 22G and the pressing plate 38.
  • FIG. 12 shows an eighth embodiment.
  • the eighth embodiment is different from the first embodiment in that the transmission plate 36 is formed so as to be curved downward (toward the light projecting unit 41 and the light receiving unit 42). Also in the eighth embodiment, the passage surface 36A is flush. Other configurations are the same as those in the first embodiment.
  • FIG. 13A shows a ninth embodiment.
  • the ninth embodiment has a plurality of measurement units 32 similar to those of the first embodiment.
  • the plurality of measurement units 32 are arranged side by side in a direction intersecting the flow direction Y1 and along the upper surface 31B of the case 31.
  • the measurement part 32 should just have the light projection part 41, the light-receiving part 42, and the permeation
  • FIG. 13B shows a tenth embodiment.
  • the spectroscopic analyzer 9 is a measuring unit 32 having a light projecting unit 41, a light receiving unit 42, and a transmission plate 36, and is a horizontally long measuring unit 32 that is long in the direction intersecting the grain flowing direction Y1.
  • the transmission plate 36 corresponds to the light projecting unit 41 (for irradiating light toward the grain) and the light transmission unit 42 (for entering reflected light returning from the grain).
  • Other configurations are the same as those in the first embodiment.
  • the moisture content of more grains can be measured, and the variation (unevenness) in the moisture content of the grains in the dryer 1. Can be grasped accurately.
  • FIG. 14 shows an eleventh embodiment.
  • the spectroscopic analyzer 9 includes a first device 9 ⁇ / b> A having a light projecting unit 41 and a second device 9 ⁇ / b> B having a light receiving unit 42.
  • the first device 9A is located above the guide surface 22G and the second device 9B.
  • the second device 9B includes a transmission plate 36 having a passage surface 36A, and is provided on the inclined portion 22Cb.
  • the first device 9A includes a light source unit (not shown), and the light projecting unit 41 irradiates light from above toward the grain passing through the passage surface 36A.
  • the second device 9B includes a case 31, a measuring unit 32, and a grain evaluation unit (not shown).
  • the measurement unit 32 includes a transmission plate 36, a first holding unit 37, a pressing plate 38, a light receiving unit 42, a second holding unit 43, and a mounting plate 44. Since these configurations are the same as those in the first embodiment, description thereof will be omitted. Also in the tenth embodiment, since the transmission plate 36 is constituted by a single flat glass plate, the grain passes through the passage surface 36A. As a result, the reflected light from the grain can be received stably, and the moisture content of the grain can be measured accurately (stable).
  • the first device 9A may include the light receiving unit 42 and the grain evaluation unit
  • the second device 9B may include the light projecting unit 41 and the light source unit. That is, one of the light projecting unit 41 or the light receiving unit 42 is provided on the opposite side of the transmission plate 36 from the passage surface 36A.
  • the spectroscopic analyzer 9 of the present invention does not crush grains. The measurement interval of the spectroscopic analyzer 9 is not affected by the cleaning and can be set to a short interval.
  • the moisture content of the grain can be measured with high frequency, and the moisture content of the grain can be measured at a short measurement interval.
  • the spectroscopic analyzer 9 of this embodiment is an apparatus that measures the moisture content of grains at short measurement intervals.
  • Short measurement interval refers to a time interval that is shorter than the time taken for the conventional grain destruction and the moisture measurement of the broken grain in one moisture measurement.
  • dryers on the market measure the moisture content of grains with a destructive moisture meter, and the measurement interval is generally several tens of minutes.
  • the moisture content of grains can be measured at a measurement interval of 10 minutes or less, preferably less than 5 minutes, more preferably at a measurement interval of 60 seconds or less. Is possible.
  • the spectroscopic analyzer 9 is a device that continuously measures the moisture content of grains at short measurement intervals.
  • the continuous measurement means that measurement is repeated at a predetermined time width (predetermined interval).
  • a predetermined sampling frequency is set and measurement is performed at an interval of the sampling frequency.
  • the short measurement interval naturally includes that the interval between measurement and the next measurement is 1 second or less, but it is a short measurement interval of several seconds to several tens of seconds. Good.
  • the dryer 1 it is preferable to set a target moisture content, and the actual grain moisture content (actual moisture content) when drying is actually finished may coincide with a predetermined target moisture content. desirable. Since the spectroscopic analyzer 9 continuously measures the moisture content of the grains at short measurement intervals, the actual moisture content can be easily matched with the target moisture content.
  • the spectroscopic analyzer 9 is preferably a single device.
  • a single device refers to a device that measures the grain at the same time (timing) when the light projecting and receiving unit provided in the spectroscopic analyzer 9 is focused on the light projecting and receiving unit (projecting and receiving unit described later).
  • the number of light projecting / receiving units included in the spectroscopic analyzer 9 is not limited. For example, even if the spectroscopic analyzer 9 has a plurality of light projecting and receiving units, if the plurality of light projecting and receiving units are devices that measure grain moisture at the same timing, a single device and I can say that.
  • the dryer 1 of this embodiment since the moisture content of grain is measured by spectroscopic analysis, it can be measured with high frequency even with a high moisture content.
  • the number of measurements can be increased by non-destructive measurement, even if there are grains with extremely high moisture content or grains with extremely low moisture content, only the moisture content of these grains is present. However, it is possible to prevent the moisture content of the dried grain from becoming a representative value as in the conventional case, and it is possible to appropriately dry the grain.
  • the moisture content (the actual moisture content) of the grains after drying is greatly deviated from the target moisture content. Can be prevented. As a result, it is possible to prevent re-drying after completion of drying.
  • the moisture content of the brown rice exceeds the target moisture content after the rice kneading after drying in the dryer 1, it is necessary to turn it to the dryer 1 again. In this case, since the rice is dried without wrinkles, brown rice is easily damaged.
  • the non-destructive spectroscopic analyzer 9 it is possible to accurately grasp the variation in the moisture content of the grains in the dryer 1. Can be avoided.
  • the number of measurements can be increased by non-destructive measurement, and as a result, the variation in moisture content of the grains in the dryer 1 can be accurately grasped, so that the drying rate can be accurately grasped. Can do. Therefore, the drying rate can be controlled with high accuracy. In addition, since the drying rate can be controlled with high accuracy, the accuracy of the predicted end time of drying is improved. In addition, since non-destructive measurement of the moisture content of the cereal can accurately grasp unevenness in the moisture content of the cereal in the dryer 1, it is easy to perform a process for reducing the unevenness in the moisture content of the cereal. . For example, it is easy to carry out a process of reducing unevenness in the moisture content of grains using a cooling tank.
  • the cooling tank is a tank that cools by storing the grains dried by the dryer 1 for a predetermined time.
  • the near-infrared moisture meter it is possible to measure the moisture content of grains at intervals of several tens of seconds (it can also be measured continuously). Further, the near infrared moisture meter can accurately measure the moisture content in a state where the grain is flowing. Moreover, the near-infrared moisture meter can measure the moisture content of a large amount of grains in one measurement. Moreover, the moisture content measured with a near-infrared moisture meter is the ratio (moisture content%) with respect to mass.
  • the frequency of flowing through the grain must be changed between when measuring the moisture content of high moisture grains and when measuring the moisture content of low moisture grains. For this reason, it is difficult to increase the measurement accuracy.
  • the near-infrared moisture meter uses a calibration curve that can accurately measure the moisture content of cereals, regardless of whether it is high or low in moisture content. Even if it changes, the moisture content of grains can be measured accurately.
  • the inside of the dryer 1 has a relatively severe temperature environment. That is, the grain in the dryer 1 is placed in a situation where the temperature environment is likely to change compared to a situation where the temperature environment is relatively stable and stored in a container or a grain tank before drying. Therefore, the temperature of the cereal in the dryer 1 (cereal temperature) varies with time depending on the location. Moreover, the atmospheric temperature in the dryer 1 also changes with time by a place.
  • a calibration curve is used for temperature correction so that the same value can be obtained even when the temperature (grain temperature, ambient temperature) is different.
  • the spectroscopic analyzer (near infrared moisture meter) 9 incorporates correction due to temperature changes into a calibration curve, and can accurately measure the moisture content of grains without performing temperature measurement. This is different from the near infrared moisture meter.
  • a conventional spectroscopic analyzer near-infrared moisture meter
  • the spectroscopic analysis apparatus near infrared moisture meter
  • the spectroscopic analyzer since correction due to temperature change is incorporated in the calibration curve, it is possible to measure from low temperature to high temperature without performing temperature measurement.
  • the spectroscopic analyzer has a calibration curve incorporating temperature correction, so that it is possible to measure the moisture content of grains without performing temperature measurement.
  • the spectroscopic analyzer may have a calibration curve incorporating corrections from low temperature to high temperature.
  • the spectroscopic analyzer 9 for a dryer is a device that supports (adapts) drying in the dryer 1 so that the moisture content of the grain can be appropriately measured in the dryer 1 that dries the grain. That is, the spectroscopic analyzer 9 for a dryer is a device that can appropriately measure the grain temperature even in a situation where the temperature (cereal temperature or ambient temperature) is likely to change like the dryer 1. Specifically, taking into consideration the temperature environment peculiar to the dryer 1, the spectroscopic analyzer (near infrared moisture meter) 9 can adjust the moisture content of grains at an ambient temperature of 10 ° C. to 50 ° C., for example. It can be measured accurately.
  • the atmospheric temperature is, for example, the temperature at which the grain passes through the receiving and receiving unit, and at least the ambient temperature at which the grain is measured by the spectroscopic analyzer 9.
  • the calibration curve of the spectroscopic analyzer (near infrared moisture meter) 9 is set corresponding to the temperature environment of the dryer 1, and for example, the temperature of the grain itself (grain temperature) is 10 ° C to Settings are made to accurately measure the moisture content of grains at 50 ° C.
  • the near-infrared moisture meter (spectral analyzer) of the present embodiment can measure the moisture content of grains at a temperature (grain temperature or ambient temperature) of 10 ° C. to 50 ° C.
  • a temperature grain temperature or ambient temperature
  • the near-infrared moisture meter (spectral analyzer) Regardless of whether the grain temperature or ambient temperature is the lower limit (10 ° C) or the upper limit (50 ° C), one calibration curve (temperature from 10 ° C to 50 ° C) incorporating correction due to temperature changes ), The moisture content of the grains can be accurately detected.
  • the near-infrared moisture meter (spectral analyzer) can accurately measure the moisture content of the grain using a calibration curve when the temperature is 10 ° C. to 50 ° C. In the near-infrared moisture meter (spectral analyzer), it is possible to properly measure the grain temperature even when the grain temperature exceeds 40 ° C. and the grain temperature falls below 20 ° C.
  • the near-infrared moisture meter (spectral analyzer) can accurately measure the moisture content of grains at an atmospheric temperature higher than the outside air temperature.
  • the outside air temperature refers to the environmental temperature outside (around) the dryer 1.
  • natural outside air temperature 10 ° C to 30 ° C.
  • the starch contained in the grain exceeds 60 ° C, it may be pregelatinized.
  • a drying temperature is set in consideration of alpha conversion.
  • the near-infrared moisture meter can also properly measure the moisture content of the grain at a temperature of 60 ° C. or less (the grain temperature or the ambient temperature) in consideration of the specific environment of the dryer 1.
  • the near-infrared moisture meter may be a device that measures the moisture content of grains at a grain temperature at which starch is not pregelatinized. Therefore, the near-infrared moisture meter (spectral analyzer) can appropriately measure the grain temperature in the range of the grain temperature exceeding 40 ° C. to 60 ° C.
  • circulation type dryer which dries while circulating a grain was illustrated as the dryer 1, circulation may be continuous or intermittent, ie, even if it is a continuous circulation type dryer, it is intermittent. It may be a dryer of the type. Further, it may be a dryer that performs drying without circulating the grain, that is, a stationary dryer that performs drying in a state where the grain is left at a predetermined position.
  • the place where the spectroscopic analyzer 9 is provided is not limited to the place disclosed in the present embodiment, and may be provided anywhere in the dryer 1 as long as the grain flows. Moreover, the spectroscopic analyzer 9 may be provided at a plurality of different locations in the dryer 1.
  • G1 Grain 4 Drying unit 9 Spectroscopic analyzer 36 Transmission plate 36A Passing surface 41 Light projecting unit 42 Light receiving unit 22Cb Wall 22G Guide surface 34 Opening portion 38 Press plate 38A End surface of press plate 31 Case 31B One end surface 37 Case 37K Inclined surface 32 Measuring unit 36D First plate 36E Second plate

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Abstract

L'objectif de la présente invention est de mesurer précisément la teneur en eau du grain. Ce séchoir est pourvu d'une unité de séchage qui sèche le grain, et d'un dispositif d'analyse spectroscopique qui met en oeuvre l'analyse spectroscopique pour mesurer la teneur en eau du grain qui est passé dans l'unité de séchage, le dispositif d'analyse spectroscopique comprenant : une plaque de transmission pouvant transmettre la lumière et présentant une surface de passage au-delà de laquelle le grain passe; une unité électroluminescente qui rayonne la lumière dans la plaque de transmission depuis le côté opposé jusqu'à la surface de passage; et une unité de réception de lumière qui reçoit la lumière qui a été réfléchie par le grain passant par la surface de passage et qui a traversé la plaque de transmission. La surface de passage est une surface de rinçage passant à la fois dans l'unité électroluminescente et l'unité de réception de lumière.
PCT/JP2017/015155 2016-04-15 2017-04-13 Séchoir et dispositif d'analyse spectroscopique pour séchoir Ceased WO2017179662A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PH1/2018/502200A PH12018502200B1 (en) 2016-04-15 2017-04-13 Dryer and spectroscopic analysis device for dryer
CN201780023223.1A CN109073545B (zh) 2016-04-15 2017-04-13 干燥机及干燥机用光谱分析装置

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JP2016081670A JP6640644B2 (ja) 2016-04-15 2016-04-15 乾燥機及び乾燥機用分光分析装置
JP2016-081670 2016-04-15

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