JP2007225523A - Moisture meter with grain crack inspection function in grain dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moisture meter with a grain crack inspection function, which stably performs the grain crack inspection of grain and the measurement of a moisture value by one device, and precisely judges the grain crack of grain. <P>SOLUTION: The moisture meter with the grain crack inspection function is provided with: a grain crack detection part for performing the grain crack judgment of supplied sample grain and the measurement of the moisture of grain in one grain unit and a moisture measuring part; and a transfer means for transferring the grain inspected in the grain crack detection part to the moisture measuring part is arranged to the moisture meter, thereby to stably perform the grain crack judgment and the measurement of moisture in one grain unit. The judge part in the grain crack detection part is constituted so as to judge cracked grain on the basis of the measured moisture value of the grain measured in the moisture measuring part when a detected grain crack judging voltage value is within a range of a low voltage level value and a high voltage level value. By this constitution, even if the grain crack judging voltage value is low, and the grain crack judgment value is a difficult value, the grain crack judgment of the sample grain is accurately performed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a moisture meter with a body split inspection function (hereinafter referred to as “body split”) that is used when performing a drying operation (hereinafter referred to as “body split prevention drying operation”) that reduces the cracking of grain in a circulation type grain dryer. "Moisture meter with inspection function").

  Conventionally, as a waist split prevention drying operation, a tank split inspection device is provided in a tank of a circulation type grain dryer, and a sample grain being dried is taken into the waist split inspection device and subjected to a trunk split inspection. There is one that lowers the drying rate when the calculated body split ratio reaches a certain value (Patent Document 1).

  On the other hand, according to Patent Document 2, a circulating grain dryer is provided with the moisture meter with a torso inspection function, and the torsion inspection of the sample grain being dried by the moisture meter with a torsion inspection function and its torso When the rate of cylinder split exceeds a certain value, the drying rate (hot air temperature) is further decreased until the measured moisture value reaches a moisture value of 18% where the increase in shell cracks is considered to be significant. While preventing the occurrence of torso cracking, when the measured moisture value is lower than 18%, the drying rate is maintained to maintain the drying rate when the measured moisture value is 18%, and the drying time is prevented from being prolonged, Efficient drying is performed.

Japanese Examined Patent Publication No. 62-60631 Japanese Patent No. 2814570

By the way, the moisture meter with a body split inspection function has the following problems. That is, according to Patent Literature 2, the description of the configuration of the moisture meter with a torso inspection function is “the moisture sensor is configured to include a torso sensor that detects the torso of the grains to be transferred one by one”. The description was stopped. For this reason, since the specific structure of the moisture meter with a torso split inspection function is not clear, it is desired to develop an apparatus for performing the torso split inspection and moisture value measurement with a single device in a stable and accurate manner. It was.
Therefore, in view of the above problems, the present invention has a torso inspection function that can perform torso split inspection and moisture measurement of grains stably with a single device, and can perform torso split determination with high accuracy. It is an object to provide a moisture meter.

In order to solve the above problem, according to claim 1,
A tank section for storing grains;
A drying section for passing hot air to the grains flowing down from the tank;
A take-out section for taking out the grain that has flowed down from the drying section;
A reflux part for refluxing the grains discharged by the take-out part to the tank by an elevator and an upper transport part;
A moisture meter with a torso inspection function that is disposed in the elevator and performs torso detection and moisture measurement of the grain,
In a grain dryer provided with a control unit that performs control such as drying operation based on the measurement result of the moisture meter with a body split inspection function,
The moisture meter with a torso inspection function is provided with a torso detection unit and a moisture measurement unit for performing torso split determination and moisture measurement of the supplied sample grain in units of one grain, and for performing inspection at the torso detection unit. A transfer means for transferring the finished grain to the moisture measuring unit is disposed,
The torso detection unit has a determining unit that calculates and calculates a torso split determination voltage value in the sample grain, and the torsion determination unit determines that the torso split determination voltage value is arbitrary. When it is lower than the low voltage level value, it is determined that it is not a cracked grain, while when it is higher than any high voltage level value, it is determined as a cracked grain, and the low voltage level value and the high voltage level value are within the range. When the measured moisture value of the grain measured by the moisture measuring unit is equal to or less than a predetermined value, the grain is determined to be a torn grain, and when the grain is higher than the predetermined value, the grain is not a torn grain. I took the technical means of judging.

According to claim 2,
A technical measure was taken to set the predetermined moisture value to 21%.

Furthermore, according to claim 3,
The torso detection unit is provided with an inclined rotating disk in which a plurality of holding parts for holding the sample grains are arranged at the periphery, a base disk on which the rotating disk is placed, and an upper layer of the rotating disk. An optical unit that detects transmitted light from the grain, a sample grain retention unit configured below the rotating disk, and a grain that has been inspected by the optical unit provided on the base plate A discharge portion for discharging from the transfer means to the transfer means,
The technical means was provided above that the retention part was provided with a cocoon supply port for sample grains.

According to claim 4,
Provided with a control base for rotating the rotating disk in the reverse direction temporarily before or after the inspection of an arbitrary number of sample kernels or after a predetermined time has elapsed, Took the technical measure of installing a residual discharge part.

Furthermore, according to claim 5,
While the light receiving sensor in the optical unit is a single element, a technical means is provided that includes a timing detection unit that detects the timing at which the optical detection of the grain is performed in the optical unit.

According to claim 6,
The technical means that the contact member which contact | abuts the grain under transfer which protruded upwards from the said holding | maintenance part was arrange | positioned on the path | route where the said holding | maintenance part is transferred by rotation of the said rotation disk was taken.

Furthermore, according to claim 7,
A technical means that a comb-like foreign substance removing portion having an interval through which the grain can pass was extended from the upper side to the lower side at the koji supply port.

According to claim 8,
A technical means was provided on the rotating disk side of the foreign matter removing portion, in which a staying amount regulating plate having a predetermined interval between the lower end portion and the staying portion was erected.

Furthermore, according to claim 9,
The technical means that the waist detection unit and the moisture measurement unit were sequentially stacked one above the other was taken.

The moisture meter with a torso inspection function of the present invention includes a torso detection unit and a moisture measuring unit for performing incision determination and moisture measurement of a sample grain in units of one grain in order of upper and lower ones, and the torso detection By disposing the transfer means for transferring the grain that has been inspected at the section to the moisture measuring section, the split inspection of the sample grain and the moisture value measurement can be stably performed in units of one grain. Further, the determination unit in the torso detection unit determines that the torso split determination voltage value is lower than an arbitrary low voltage level value, and determines that the torso split grain is not a torn split grain, but is higher than an arbitrary high voltage level value. Is determined as a torn grain, and when the measured moisture value of the grain measured by the moisture measuring unit is equal to or less than a predetermined value (21%) when it is within the range of the low voltage level value and the high voltage level value The grain is determined to be a split body grain, and when the grain is higher than a predetermined value (21%), the grain is determined not to be a split grain. Therefore, even if the voltage value for determination of the torso is included in the range of the low voltage level value and the high voltage level value and is a small value that is difficult to determine the torso split, the torsion determination of the sample grain Can be performed more accurately, and the torso ratio calculated based on the torso ratio determination result becomes accurate. For this reason, in the grain dryer, it is possible to make the torsion prevention drying operation based on the torso split rate safer and more precise, and to reduce the occurrence and increase of torso split grains.

In addition, regarding the configuration of the torso detection detector, an inclined rotating disk in which a plurality of holding parts for holding grains are arranged at the periphery, a base disk on which the rotating disk is placed, and a higher level of the rotating disk An optical unit that detects transmitted light from the arranged grain, a sample grain retention part that is configured below the rotating disk, and a grain that has been inspected by the optical unit provided on the base board A discharge portion that discharges from the holding portion to the transfer means, and a retention portion that is supplied from the straw supply port by being provided with a straw supply port for sample grains above the retention portion. It becomes possible to put the sample grains staying in the container one by one into the holding part (groove part) of the rotating rotating disk and to reliably transfer them by the optical part.

In addition, before starting or after completion of the inspection of an arbitrary number of sample grains, the rotating disk is temporarily rotated in the reverse direction, so that residual grains etc. retained in the staying part are retained. Can be eliminated from the discharge section. As a result, it is possible to eliminate branch infarct grains that have accumulated in the retention section and are difficult to transfer in the holding section and cause clogging. Data can be obtained stably.

Furthermore, by providing a timing detection means for detecting the timing at which the grain is optically detected in the optical unit, even if an inexpensive single-element light receiving sensor is used in the optical unit, Based on the received light signal, it is possible to detect the body split. As a result, the optical unit can be made inexpensive and simplified without requiring a complicated circuit such as a CCD sensor or image processing.

In addition, a contact member that contacts the grain protruding upward from the holding portion being transferred is disposed on a path along which the holding portion is transferred by rotation of the rotating disk, so that the When the grain to be transported is a branch infarction, the abutment grain is brought into contact with the branch infarction and the branch infarction is brought into contact with the grain. Can be excluded from. For this reason, since the grain which is stored in the holding unit and has a well-positioned posture can be transferred to the optical unit, it is possible to more accurately detect the torso.

Further, by disposing the comb-like foreign substance removing portion at the cocoon supply port, the foreign substances and branching grains mixed in the sample grain are eliminated when passing through the cocoon supply port, and the retention The quantity of the said impurities contained in the sample grain supplied to a part and a branch infarction grain can be reduced.

Further, a sample grain accumulated in the staying portion is provided on the rotating disk side of the foreign matter removing portion by standing a staying amount regulating plate having a predetermined interval between the lower end portion and the staying portion. In addition to blocking the flow of grains to the rotating disk side, the sample grains accumulated beyond the straw supply port can be discharged from the straw supply port. Thereby, since the accumulation amount of the sample grain in the staying portion can be maintained at an appropriate amount, it is possible to reduce adverse effects such as a rotational load exerted on the rotating disk.

  Furthermore, the apparatus can be made compact by sequentially stacking the body split detection unit and the moisture measurement unit vertically.

  The circulation type grain dryer 1 of this invention is demonstrated (refer FIG.1, FIG.2, FIG.3). The circulation type grain dryer 1 includes a tank part 2 for storing grain, a drying part 3 for drying the grain by ventilating hot air, and an extraction part 4 for taking out the grain subjected to the hot air ventilation to the outside. Is constructed by overlapping. The take-out unit 4 is connected to a recirculation unit 5 that recirculates the extracted grains to the tank unit 2, and the recirculation unit 5 includes an elevator 5 a and an upper transport unit 5 b. A dispersion device 5c disposed in the tank unit 2 (top plate) is disposed at the conveyance end portion of the upper conveyance unit 5b. The drying unit 3 has a configuration in which a hot air drum 6 is horizontally provided in the center, and a grain flow passage (drying chamber) 7 and a wind air drum 8 are sequentially provided on both sides of the hot air drum 6. A hot air generating means (burner) 9 is disposed in an opening on one side of the hot air drum 6 so that the hot air is supplied into the hot air drum 6. An exhaust fan 10 is disposed in the opening on the other side of the hot air drum 6, and the hot air supplied from the hot air generator 9 by the suction action of the exhaust air fan 10 is converted into the hot air drum 6, the grain. It is configured such that the downflow passage 7 and the exhausting drum 8 are exhausted and exhausted outside the machine. In addition, the side plate of the drying unit 3 includes an opening / closing lid 3a for tensioning.

  The left and right grain flow lower layers 7 are configured with their lower ends intersecting, and a rotary valve (feeding valve) 11 is provided laterally at the intersection. In addition to the rotary valve 11, the take-out unit 4 collects the grain fed by the rotary valve 11 and discharges it to the outside of the machine from a funnel-shaped grain collection board (dashboard) 12 and a lower conveyance unit 13. Constitute. The conveying terminal part of the lower conveying part 13 is connected to the reflux part 5 so that the collected grains are returned to the tank part 2.

  Next, the structure of the moisture meter 15 with a trunk split inspection function, which is a characteristic structure of the present invention, will be described (see FIGS. 4, 5, and 6). The moisture meter 15 with a torso inspection function is mounted on the elevator 5a, takes in sample mash that falls from the bucket into the elevator 5a, detects the torso of the grain, and measures moisture. It has a function to perform. The moisture meter with body split inspection function 15 includes a body split inspection unit 16 on the upper side, and a moisture measurement unit 17 that measures the moisture value of the grain on the lower side. A transfer means 18 is disposed between the torso split inspection unit 16 and the moisture measuring unit 17 so that the grains that have been inspected by the torso split inspection unit 16 are transferred to the moisture measuring unit 17. is there. In addition, the said frame 15a is provided with the rod supply port 15b for supplying the sample rod into the moisture meter 15 with a shell split inspection function. The soot supply port 15b is provided at a position above the staying portion 22 to be described later so as to supply the sample soot to the staying portion 22.

  The body split inspection unit 16 includes an inclined base board 19 and a rotating disk 20 that is rotatable on the base board 19. The rotating disk 20 is provided with a motor (not shown) and is rotated by the output of the motor. In addition, a plurality of holding portions (groove portions) 20 a for holding grains one by one and transferring them to the optical unit 24 described later are formed at the peripheral edge of the rotating disk 20 at equal intervals. The shape of the groove portion 20a is such that the size of one grain enters, and is substantially C-shaped with the edge side of the rotating disk 20 cut out.

A staying portion 22 for staying the sample soot supplied from the soot supply port 15b is formed on the lower tilt side of the rotating disk 20. The staying part 22 is constituted by a staying weir part 21 arranged along the lower side peripheral part of the rotating disk 20 on the inclined lower side of the base board 19. Further, along the peripheral edge portion on the upper side of the slope from the stay weir portion 21, the transfer weir for retaining the grain held in the groove portion 20 a so as not to be discharged from the notch portion. The part 23 is disposed. The transfer weir portion 23 extends from the retention weir portion 21 to the optical portion 24 disposed above the inclined surface of the rotating disk 20 and is slightly higher than the upper surface of the rotating disk 20. This height is assumed to be smaller than the grain thickness. On the inclined upper side of the transfer weir 23 and on the front side in the transfer direction of the optical unit 24, a ridge protruding upward from the groove 20a is placed in the groove 20a to be regulated in a stable posture. A contact member 20b is provided. The contact member 20b is a flexible sheet made of a synthetic resin material, and the interval (gap) between its lower end and the upper surface of the rotating disk 20 is about 1 mm. The base board 19 is preferably formed by integrally molding the stay weir portion 21 and the transfer weir portion 23 with a synthetic resin material by an injection molding method or the like.

In the staying part 22 (the staying weir part 21), the position adjacent to the reverse side of the rotation direction of the rotary disk 20 (the direction of the arrow Y in FIG. 6) is caused by the reverse rotation of the rotary disk 20 and the staying part. The residual discharge part 21a for discharging | emitting the grain (including branch infarction grain) which remained in 22 is arrange | positioned. In the present embodiment, the residual discharge portion 21a is opened so as to fall naturally when the residual grain is transferred past the end portion of the retention weir portion 21. The naturally falling residual grains are discharged into the elevator 5a through a discharge basket 17g, which will be described later.

The optical unit 24 constitutes an irradiation unit 25 and a light receiving unit 26 (see FIG. 7). The irradiation unit 25 is disposed below the rotating disk 20 and emits irradiation light to an optical detection position K set at an arbitrary position in the transfer path of the groove 20a. On the other hand, the light receiving unit 26 is arranged on the upper side facing the optical detection position K, and receives light from the optical detection position K. The light receiving sensor constituting the light receiving unit 26 is the same as the first light receiving sensor 26a disposed at an obliquely upstream position on the upstream side with respect to the transfer direction (arrow: Y direction in FIG. 7) at the optical detection position K. And a second light receiving sensor 26b disposed at an obliquely upper position on the side. Each of the first light receiving sensor 26a and the second light receiving sensor 26b is configured by an analog transmitted light sensor made of a silicon photodiode (single element) or the like, and each focal point is in the transport direction with the optical detection position K as the center. The positions are slightly shifted from each other. The analog transmitted light sensor may be a phototransistor (single element) or the like.

An irradiation opening 19a is formed in the base plate 19 at the position where the optical unit 24 is disposed so that the optical detection position K is at the center. A slit plate 19b having a slit hole is fitted on the upper edge of the irradiation opening 19a, and a transparent plate glass 14 is placed on the slit plate 19b. Thereby, the irradiation light from the said irradiation part 25 is irradiated to the said optical detection position K (grain in the groove part 20a) from the downward side.

Next, a groove detection sensor 27 for detecting the arrival (passage) of the transferred groove 20a is disposed on the transfer direction side adjacent to the light receiving unit 26, and the grain is discharged from the groove 20a. A discharge portion 28 is disposed. The groove detection sensor 27 is disposed at a position away from the optical detection position K by a predetermined distance on a path through which the groove 20a passes, and the light receiving sections 27a disposed opposite to each other with the path vertically interposed therebetween. It comprises the irradiation part 27b (refer FIG. 8, FIG. 9). The predetermined distance matches the timing at which the groove detection sensor 27 detects passage through the groove 20a and the timing at which the light receiving unit 26 optically detects the groove 20a (ａ) transferred to the optical detection position K. The distance between the groove 20a and the groove 20a adjacent to the groove 20a. The discharge portion 28 is a space portion 28 in which a portion of the base board 19 where the discharge portion 28 is provided has an open path portion through which the groove portion 20a passes so that a heel naturally falls from the bottom portion of the groove portion 20a. Thus formed. The groove detection sensor 27 may be any timing detection unit that can detect the timing at which the light receiving unit 26 optically detects the groove 20a (籾) at the optical detection position K. There may be.

An inclined chute 18 is disposed as the transfer means 18 below the space portion (discharge portion) 28 (see FIGS. 5 and 6). The chute 18 is provided with left and right side walls so that the flowing grain does not jump out. And the lower end part of the said chute | shoot 18 is the position which adjoined the contact (between electrode rolls) of a pair of electrode roll mentioned later, and the discharge locus | trajectory of the grain discharge | released from the said lower end part is a position which goes to the said contact point. Arrange.

The torso split inspection unit 16 also includes a determination unit 15f described later that performs torso split determination based on an optical part light reception signal (detected voltage value) detected from the optical unit 24.

The moisture measuring unit 17 has a known resistance moisture meter structure (for example, see Japanese Patent No. 3048006 by the applicant of the present application) (see FIG. 5). The moisture measuring unit 17 includes a crushing electrode unit 17c including a pair of electrode rolls 17a and 17b, and a drive unit 17d for rotating the electrode rolls 17a and 17b in opposite directions. The drive unit 17d includes a motor 17e and a gear unit 17f including a plurality of reduction gears that transmit the output of the motor 17e to the electrode rolls 17a and 17b. A funnel-shaped discharge rod 17g is provided below the electrode rolls 17a and 17b, and the grain that has fallen after moisture measurement is discharged to the outside of the machine. The discharge basket 17g communicates with the inside of the elevator 5a through a pipe line 30a so as to discharge the discharged grains to the elevator 5a. The moisture measuring unit 17 also includes a determination unit 15f described later that calculates a measured moisture value based on the electrical resistance values detected by the electrode rolls 17a and 17b.

Next, the foreign substance removal part 30 is demonstrated (refer FIG. 4, FIG. 5). The foreign matter removing unit 30 is disposed on the inside of the moisture meter 15 with a torso inspection function in the bag supply port 15b. The foreign matter removing unit 30 includes a plurality of rods 31 having a diameter of about 1 mm. The rod 31 is inclined downward (for example, at an inclination angle of 60 degrees) from the inside upper side of the moisture meter with a body split inspection function 15 to the cocoon supply port 15b at the cocoon supply port 15b, and the cocoon supply It is arranged in parallel at equal intervals over the entire width direction of the mouth 15b. Since the length of the ridge is about 7 mm, the interval is preferably about 8 to 12 mm in order to remove as much as possible cocoon (straw) waste longer than the ridge. The material of the rod 31 is stainless steel, for example. The lower end of the rod 31 may extend to the lower end of the opening of the rod supply port 15b. However, in this embodiment, the lower end 31a of the rod 31 and the opening of the rod supply port 15b are provided. A gap is formed between the lower end portion 15c and the sample basket is supplied directly to the staying portion 22 without passing through the interval. In addition, the slit hole 15e shown by the code | symbol 15e in FIG. 4 is for fitting with the hook formed in the elevator 5a side, and mounting | wearing the elevator 5a with the said moisture meter 15 with a body split inspection function.

Next, the staying amount regulating plate 32 will be described (see FIG. 5). The staying amount regulating plate 32 is disposed substantially vertically on the rotating disk 20 side of the plurality of rod bodies 31 (contaminant removing unit 30). The stay amount regulating plate 32 is at least wider than the opening width of the soot supply port 15b, and the lower end portion 32a is a position where the stay portion 22 and the interval T are formed above the stay portion 22. Try to stop. When the length of the interval T is changed, the amount of sample soot supplied / storing to the staying part 22 can be adjusted.

  The moisture meter 15 with a waist split inspection function is provided with a control base (determination unit) 15f, and the control base (determination unit) 15f drives the body split inspection unit 16 and the moisture measurement unit 17, Optical detection data and electrical resistance values are acquired from the body split inspection unit 16 (the optical unit 24) and the moisture measurement unit 17 to perform body split determination and moisture value calculation.

  Next, the control part 34 of the said circulation type grain dryer 1 is demonstrated (FIG. 10). The control unit 34 is centered on a central processing unit (hereinafter referred to as “CPU”) 35, connected to the CPU 35, an input / output circuit (hereinafter referred to as “I / O”) 36, and a read-only storage unit (hereinafter referred to as “ROM”). 37) and a read / write storage unit (hereinafter referred to as "RAM") 38, and further connected to the I / O 36 are a group of operation buttons for various operations such as a tension button, a dry button, and a stop button. 39. The control unit 34 (the I / O 36) includes a circulation system drive circuit 40 for the motor and the like of the circulation grain dryer 1, the hot air generator 9, and the moisture meter 15 with a trunk inspection function. Connect each one. The ROM 37 stores a tension operation program, a drying operation program, and the like. In addition, the threshold value for the determination of the torso of the grain is stored in a storage unit provided in the determination unit 15f.

  Next, the effect | action of the said circulation type grain dryer 1 and the moisture meter 15 with a body split inspection function is demonstrated. When the stretching button is pressed in the circulating grain dryer 1, the stretching operation program (straining operation) is executed by the CPU 35, and a signal from the circulation system etc. drive circuit 40 is received and the reflux is performed. Each of the part 5, the lower conveyance part 13, and the exhaust fan 10 starts driving, and the moisture meter 15 with a trunk split inspection function also starts driving. The grain embedding operation is performed by opening the opening / closing lid 3a and supplying the grain on the dashboard 12, and the supplied grain is sequentially supplied from the lower transport unit 13 to the elevator 5a and the upper part. It is stuck to the tank part 2 via the transport part 5b. The grain moisture value detected by the moisture meter with body split inspection function 15 during the tension operation, the result of the body split inspection, etc. are used when performing a known drying operation (including a body split prevention drying operation) in the drying operation. . The main content of the present invention is the moisture meter with a torsion inspection function 15 which can stably perform the torso split inspection and moisture value measurement with a single device. Detailed description of the split prevention drying operation) will be omitted.

  Next, the operation of the moisture meter with a body split inspection function 15 will be described. The moisture meter 15 with the body split inspection function operates during the drying operation and the air blowing operation in addition to during the tension operation, and for the supplied sample kernel (hereinafter referred to as “sample rice cake”), The body split inspection and moisture value measurement are performed for each grain. This will be described in detail below.

First, the operation of the waist split inspection unit 16 will be described (see FIGS. 4, 5, and 6).
In the elevator 5a, a part of the soot spilled from the upper bucket that is being conveyed enters through the soot supply port 15b and accumulates as a sample soot in the staying portion 22 by the suction action by the exhaust fan 10 or the like. Since the spilled wrinkles are mixed with impurities such as branch rachis and debris, the fouling particles and impurities are removed as much as possible by the fouling removal unit 30, torso inspection and water content measurement The improvement of accuracy is aimed at.

  The amount of the sample soot supplied / deposited (stagnation) in the staying portion 22 is blocked from flowing into the rotating disk 20 by the staying amount regulating plate 32, and the sample soot in excess of the soot is supplied to the soot supply port 15b. Since it overflows into the elevator 5a, the retention portion 22 is always maintained at an appropriate amount.

The sample cage of the staying portion 22 enters the groove portions 20a that sequentially pass through the sample cage by the rotation of the rotary disk 20 (the arrow Y direction and the counterclockwise direction in FIG. 6), and enters the optical unit 24. It is transported toward. While being transported to the optical unit 24, the contact member 20b is configured such that when two grains of wrinkles are about to enter into the grooves 20a, the wrinkles protruding from the grooves 20a Either one or two grains are removed by contact, or when the groove 20a has not been fully received, the one grain ridge is brought into contact with the ridge and the ridge is placed in a stable posture in the groove 20a. . Further, even when branch infarct particles that could not be removed by the contaminant removal unit 30 enter the groove 20a and are transferred, they are removed in contact with this. As described above, the sample baskets are sequentially transferred to the optical unit 24.

Hereinafter, the body split determination flow, which is a feature of the present invention, will be described (see FIG. 11).

Step 1:
The optical unit 24 sequentially traverses the sample kite (groove unit 20a) transferred to the optical detection position K by the groove unit 20a from the lower side in a direction perpendicular to the direction in which the kite is transferred. Irradiate. On the other hand, when the groove detection sensor 27 detects the groove 20a, it recognizes that it is the timing when the groove 20a is transferred to the optical detection position K, and issues a groove detection signal M ((1), (3 in FIG. 12). )reference). The control board 15f (determination unit) detects the detection from the soot detected by the first light receiving sensor 26a and the second light receiving sensor 26b while the groove detection signal M is detected in accordance with the groove detection signal M. Optical part light reception signals (detection voltage values) S1 and S2 based on the transmitted light are taken in (see (2) in FIG. 12).

Step 2:
When the determination unit 15f detects that the captured optical unit light reception signals S1 and S2 have hollow waveforms Q1 and Q2, it recognizes that wrinkles are present in the groove 20a (FIG. 12). (See (2)). When the determination unit 15f detects that the indentation waveforms Q1 and Q2 have rising body crack waveforms W1 and W2, the determination unit 15f obtains the body split determination voltage values V1 and V2 in the body crack waveforms W1 and W2. Then, the data for one grain is temporarily stored in the storage unit built in the determination unit 15f. In addition, the detection result of the wrinkles in which the body crack waveforms W1 and W2 are not detected in the indentation waveforms Q1 and Q2 (the wrinkles that are not the body split grains) is also temporarily stored in the storage unit.

As described above, the body split detection unit 16 transfers the candy to the optical unit 24 one by one in the groove 20a provided in the rotating disk 20, and also to the staying unit 22 by the contaminant removal unit 30. It is possible to inspect the torso while reducing the amount of branch infarction grains and impurities mixed in the supplied straw. Furthermore, even if branch infarction grains or impurities enter the groove portion 20 a, the abutment particles or contaminants are repelled and removed by the contact member 20 b before being transferred to the optical unit 24. Further, the contact member 20b also has an action of pushing a heel that does not fit into the groove 20a into the groove 20a so as to have a stable posture suitable for optical measurement. Therefore, since the waist detection unit 16 can stably transport the eyelids to the optical unit 24 one by one, the body split inspection can be performed accurately.

Further, since the body split detection unit 16 can detect the body split by the single-element light receiving sensors 26a and 26b and the groove detection sensor 27 (timing detection means) without using a CCD sensor or an image processing circuit. The apparatus is simplified and the manufacturing cost is low.

Step 3:
Next, the operation of the discharging unit 28 and the moisture measuring unit 17 will be described.
The scissors that have been subjected to the body split inspection in the optical part 24 and transferred to the discharge part 28 fall onto the chute 18 from the open bottom part of the groove part 20a through the space part 29 that is the discharge part 28, It is transferred to the moisture measuring unit 17 (see FIG. 5). In the moisture measuring unit 17, the pair of electrode rolls 17a and 17b are rotated in opposite directions by the output from the driving unit 17d. The soot transported down by the chute 18 is discharged from the lower end of the chute 18 and then supplied to the contact between the pair of electrode rolls 17a and 17b, and the soot is between the electrode rolls 17a and 17b. It is drawn and crushed. The control base (determination unit) 15f detects the electrical resistance value from the electrode rolls 17a and 17b at the time of the crushing, calculates the measured moisture value T, and uses the measured moisture value T as the data for the one granule Once stored in the storage unit. Note that the soot that has passed between the electrode rolls 17a and 17b is discharged into the elevator 5a through the discharge rod 17g and the pipe line 30a.

As described above, the drainage unit 28 and the chute 18 can be used to measure the moisture value by sequentially supplying the culverts that have undergone torsion inspection one by one between the electrode rolls 17a and 17b. The measured moisture value T and the optical detection values (the presence / absence of torso cracking waveforms W1, W2 and the torso split determination voltage values V1, V2) at the torso split detection unit 16 can be reliably acquired.

Step 4:
The determination unit 15f reads from the storage unit data of the sample basket in which the body split determination voltage values V1 and V2 are detected. Then, for the sample rod from which the body split determination voltage values V1 and V2 are detected, the sample split determination voltage values V1 and V2 of the sample rod and the previously stored threshold value for determining the barrel split ( 0.2v), and if the lower one is greater than the voltage value V1 or V2, the rice cracking is less than 0.2v (volt) It is determined that it is not a value obtained from the above, and it is determined that the sample basket is “not torn into grains”. On the other hand, if it is 0.2 v or more, the process proceeds to the determination step of Step 5.

Step 5:
When the body split determination voltage values V1 and V2 are 0.2 v or more, it is determined whether the body split determination voltage values V1 and V2 are 0.8 v (volt) or more. If it is 0.8 v or more (high voltage level value), it is judged that the value is a clear value obtained from the rice grain cracks, and the sample basket is judged to be “not torn grain”. On the other hand, if it is less than 0.8 v, it is determined that the value is not a clear value obtained from rice grain cracks, and the process proceeds to the determination step of step 6.

Step 6:
The determination unit 15f reads, from the storage unit, the measured moisture value T of the sample basket in which the body split determination voltage values V1 and V2 are less than 0.8 v. If the measured moisture value T is 21% or less, the sample basket is judged to be “trunk grains”, while if the measured moisture value T is 22% or more, which is greater than 21%, the sample basket Judges that it is not a torn grain. Judgment as to whether or not it is a cracked grain based on the measured moisture value is based on the result of the inventor's investigation of the measured moisture value of the cracked grain in an arbitrary bowl such as a raw cake or a dried cake. This is based on the grounds that it is possible to distinguish between the split body grains and the normal sputum at about 21%. Further, the measured moisture value T for the body crack determination may be the same value (fixed) in any of the tension operation, the drying operation, and the air blowing operation.

Step 7:
Based on the body split inspection result and the measured moisture value in each sample bowl determined in the above steps, the determination unit 15f calculates the average moisture value and the body split rate by summing up the results, and the waist split prevention drying operation, etc. Is sent to the control unit 34 of the circulating grain dryer 1. These tabulations / calculations are performed at regular time intervals, for example, with the unit split inspection result and the measured moisture value obtained from 100 sample baskets.

Step 8:
When the operation stop signal is transmitted from the circulation type grain dryer 1, the driving of the moisture meter 15 with body split inspection function is also stopped. On the other hand, while the stop signal is not sent, the process returns to step 4 and the determination of the case crack is repeated.

As described above, according to the moisture meter 15 with a torso inspection function of the present invention, it is possible to detect and measure optical detection values (such as torsion determination voltage values V1 and V2) and measured moisture values in each sample basket. Therefore, when it is difficult to determine the case split using the detected optical detection value, it is possible to determine the case crack based on the measured moisture value of the bag. Therefore, since the accuracy of cylinder crack determination is improved, it is possible to make the cylinder split prevention drying operation in the drying operation safer and more accurate, and to reduce the occurrence and increase of cylinder split grains.

In the present invention, the predetermined range based on the low voltage level value and the high voltage level value used at the time of the body split determination is 0.2 v to 0.8 v in the above embodiment, but is not limited thereto. What is necessary is just to set suitably.
Moreover, in the said Example, although the said determination part 15f which performs a body split determination and a moisture value calculation was provided in the moisture meter 15 with a body split test | inspection function, the function is provided to the control part 34 (CPU35) of the circulation type grain dryer 1. You may make it provide.

It is a front perspective view of the circulation type grain dryer in the present invention. It is a back perspective view of the circulation type grain dryer. It is a front longitudinal section of the circulation type grain dryer. It is a simple substance perspective view of a moisture meter with a body split inspection function in the present invention. It is an internal perspective view in the moisture meter with the same body split inspection function. It is an internal side view in the moisture meter with the same body split inspection function. It is sectional drawing of AA in FIG. It is the figure which showed the positional relationship of the groove part in a rotary disk, and a timing detection means (groove part detection sensor). It is sectional drawing of BB in FIG. It is a control block diagram of the said circulation type grain dryer and a moisture meter with a body split inspection function. The flow of the body split judgment in the moisture meter with a body split inspection function is shown. It is a figure of an example which showed the relationship between an optical detection position (籾), an optical part detection signal, and a groove part detection signal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Circulating grain dryer 2 Tank part 3 Drying part 3a Opening / closing lid 4 Extraction part 5 Refluxing part 5a Elevator 5b Upper conveyance part 5c Grain disperser 6 Hot air drum 7 Grain flow down passage (drying room)
8 Exhaust cylinder 9 Hot-air generator 10 Exhaust machine 11 Rotary valve 12 Dashboard 13 Lower conveyance part 14 Transparent plate glass 15 Moisture meter with body inspection function 15a Frame body 15b Trap supply port 15c Opening lower end 15d Opening upper end 15e Slit hole 15f Control infrastructure (determination unit)
16 Body split detection unit 17 Moisture measurement unit 17a Electrode roll 17b Electrode roll 17c Crushing electrode unit 17d Drive unit 17e Motor 17f Gear unit 17g Discharge rod 18 Transfer means (chute)
19 Base board 19a Irradiation opening 19b Slit plate 20 Rotating disk 20a Holding part (concave part)
20b Contact member 21 Retaining dam part 21a Residual discharge part 22 Retaining part 23 Transfer dam part 24 Optical part 25 Irradiating part 26 Light receiving part 26a First light receiving sensor 26b Second light receiving sensor 27 Groove part detecting sensor (timing detecting means)
27a Light receiving part 27b Irradiation part 28 Discharge part 29 Space part 30 Contaminant removal part 31 Rod body 32 Residence amount regulating plate 32a Lower end part 33 Projection 34 Control part 35 Central processing unit (CPU)
36 Input / output circuit (I / O)
37 Read-only memory (ROM)
38 Memory unit for reading / writing (RAM)
39 Driving button group 40 Circulating system drive circuit K Optical detection position S Grain (sample grain)

Claims (9)

A tank section for storing grains;
A drying section for passing hot air to the grains flowing down from the tank;
A take-out section for taking out the grain that has flowed down from the drying section;
A reflux part for refluxing the grains discharged by the take-out part to the tank by an elevator and an upper transport part;
A moisture meter with a torso inspection function that is disposed in the elevator and performs torso detection and moisture measurement of the grain,
In a grain dryer provided with a control unit that performs control such as drying operation based on the measurement result of the moisture meter with a body split inspection function,
The moisture meter with a torso inspection function is provided with a torso detection unit and a moisture measurement unit for performing torso split determination and moisture measurement of the supplied sample grain in units of one grain, and for performing inspection at the torso detection unit. A transfer means for transferring the finished grain to the moisture measuring unit is disposed,
The torso detection unit has a determining unit that calculates and calculates a torso split determination voltage value in the sample grain, and the torsion determination unit determines that the torso split determination voltage value is arbitrary. When it is lower than the low voltage level value, it is determined that it is not a cracked grain, while when it is higher than any high voltage level value, it is determined as a cracked grain, and the range between the low voltage level value and the high voltage level value is determined. When the measured moisture value of the grain measured by the moisture measuring unit is equal to or less than a predetermined value, the grain is determined to be a torn grain, and when the grain is higher than the predetermined value, the grain is torn into the torn grain. A moisture meter with a body split inspection function in a grain dryer, characterized in that it is not.   The moisture meter with a body split inspection function in a grain dryer according to claim 1, wherein the predetermined moisture value is 21%. The torso detection detector is provided with an inclined rotating disk in which a plurality of holding parts for holding the sample grains are arranged at the periphery, a base disk on which the rotating disk is placed, and an upper layer of the rotating disk. An optical unit that detects transmitted light from the grain, a sample grain retention unit that is configured in a lower part of the rotating disk, and the grain that has been inspected by the optical unit provided on the base plate A discharge part for discharging from the part to the transfer means,
The moisture meter with a body split inspection function in a grain dryer according to claim 1 or 2, further comprising a straw supply port for sample grains above the staying portion.   Provided with a control base for rotating the rotating disk in the reverse direction temporarily before or after the inspection of an arbitrary number of sample kernels or after a predetermined time has elapsed, 4. A moisture meter with a body split inspection function in a grain dryer according to claim 3, wherein a residual discharge part is provided in the grain dryer.   5. The light receiving sensor in the optical unit is a single element, and a timing detection unit is provided for detecting timing at which grains are optically detected in the optical unit. Moisture meter with torso inspection function in a grain dryer.   The contact member which contact | abuts the grain under transfer which protruded upwards from the said holding | maintenance part was arrange | positioned on the path | route where the said holding | maintenance part is transferred by rotation of the said rotation disk. A moisture meter with a body split inspection function in the grain dryer according to claim 5.   The grain according to any one of claims 3 to 6, wherein a comb-like foreign substance removing portion having an interval through which the grain can pass is extended downward from above. Moisture meter with body split inspection function for grain dryers.   8. The retention amount regulating plate having a predetermined interval between the lower end portion and the retention portion is provided on the rotating disk side of the contaminant removal portion. Moisture meter with a body split inspection function in the grain dryer according to claim 1. The moisture meter with a body split inspection function in a grain dryer according to any one of claims 1 to 8, wherein the body split detection unit and the moisture measurement unit are sequentially stacked one above the other.

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