JP3943290B2 - Moisture value control device in sample grain dryer - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a moisture value control device in a sample grain drying apparatus that dries sample grains before being supplied to a self-inspection apparatus for received grains such as a drying preparation facility.
[0002]
[Prior Art and Problems to be Solved by the Invention]
Conventionally, as a sample grain drying apparatus, for example, a sample box containing sample grains is stored in a space formed in a plurality of front, side, and side of the machine body frame of the sample dryer, and a moisture detection apparatus is provided to correspond to each of these sample boxes. As a configuration to provide, the dry finish situation is monitored. Since each sample box is provided with a moisture detection device, it is excellent in that the sample drying can be completed without detection delay, but there is a disadvantage that the moisture detection device is individually required and the cost is increased.
[0003]
[Means for Solving the Problems]
In view of the above, the present invention aims to realize a small and inexpensive sample drying apparatus and to improve the processing time efficiency, and has taken the following technical means. That is, in the moisture value control device in the sample grain drying apparatus provided with the sample grain drying apparatus for drying a plurality of sample grains to a predetermined moisture and the moisture meter 18 for measuring the moisture of the sample grain , the moisture initial value M0 is dried by the moisture meter 18. And the drying rate A of the sample grain is set , and the initial drying time H1 for measuring moisture before reaching the finished moisture value Me is obtained from the initial moisture M0 and the drying rate A, and this initial drying is performed. time H1 after drying, measuring the intermediate moisture value Mn moisture meter 18 obtains the next drying time H (n + 1) required from the intermediate moisture value Mn and dry lapse rate a to finishing water content Me, the next drying time H (n + 1) is configured to form a dry output for, when the intermediate moisture value Mn reaches a moisture content within the range plus final moisture measurement range α which preset moisture value Me finishing, then the next For 燥時between H (n + 1) is a structure of a water content value controller in the configuration and sample grain drying apparatus to finish drying without water measured after the drying output progress.
[0004]
[Action and effect of the invention]
Since the present invention is configured as described above, the drying is continued while managing the drying time such as the initial drying time, the next drying time,... From the drying rate A and the measured moisture value. It is not necessary to detect the moisture of a typical sample grain, and it is not necessary to provide a moisture meter individually, and can be constructed at a low cost.
[0005]
Further, when the intermediate moisture value Mn of the sample grain falls within the range obtained by adding the final moisture measurement range α set in advance to the finishing moisture value Me, the timer management is switched to the dry finishing. Therefore, there is little risk of overdrying. However, since the management at the time of final finishing depends only on the timer, the work efficiency is not lowered, and the drying is finished without measuring the moisture after the next drying time H (n + 1). Therefore, it is possible to quickly determine the end of drying.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. Fig. 1 is an overview of a series of automated systems from sample drying to sample packing for packing samples through self-test. 1 is a sample dryer, 2 is a self-test device, 3 is a sample pack machine, and 4 is a control. Part.
[0007]
Among the above, the sample dryer 1 includes a sample loading / unloading unit 6 for loading or unloading samples in the sample boxes 5, 5..., And a storage space for storing a plurality of samples on the front side of the machine frame ( In the illustrated example, the sample box storage unit 8 in which 10 columns and 12 columns are arranged in a total of 120 ports) 7, 7,..., The sample loading / unloading unit 9 for loading / unloading the sample box at a predetermined storage unit 7 position, It consists of a drying air circulation unit 10 or the like that is in the machine frame and incorporates a drying air adjusting device necessary for drying.
[0008]
In the sample loading / unloading section 6, the sample box 5 is placed on the front side with a receiving sample loading position a, a moisture measurement sample loading position b for moisture measurement, a moisture measurement sample receiving position c, and a sample discharging after completion of drying. The sample box 5 insertion ports 11, 12, 13 and 14 are opened to correspond to the respective positions D. Grains sampled in the range of 600 g to 1000 g from the unillustrated load receiving weighing machine are appropriately sent into the cyclone 16 through the guide duct 15, and the lower end portion of the guide chute 17 connected to the lower portion of the cyclone 16 is used as the above-mentioned load receiving sample. Look into the loading position a.
[0009]
A moisture meter 18 is provided in the flow path connecting the moisture measurement sample loading position B and the moisture measurement sample receiving position C for moisture measurement, and receiving a part of the sample and measuring moisture for each single grain. In this configuration, the average moisture can be calculated. Further, the sample discharge position D after completion of the drying is viewed from the upper end side of the chute 19 that supplies and guides the inlet of the self-test apparatus 2 described later.
[0010]
The sample box 5 has an upper surface 5a open and a bottom portion 5b configured as a ventilation net portion. The front side of the sample box 5 has a front plate 5c having a slightly larger shape than the cross section. The front plate 5c is provided at an appropriate interval. Each of the sample boxes 5, 5... Configured as described above can enter and exit the storage spaces 7, 7. The storage spaces 7, 7... Have a ventilation opening 7a corresponding to the area of the ventilation net on the receiving surface of the sample box 5, and an oblique introduction path 7b for introducing dry air from below the rear surface to the ventilation opening 7a. Is forming. 7c is an exhaust port of the dry exhaust which passed through the sample grain.
[0011]
The loading / unloading of the sample boxes 5, 5 ... into / from the storage spaces 7, 7 ... and the movement between the sample loading / unloading sections 6 are controlled by the loading / unloading robot 20 of the sample loading / unloading section 9. The loading / unloading robot 20 is mounted on a vertical connection frame 24 provided so as to be laterally movable along horizontal rails 22, 23, 23 provided on an upper front surface of the machine frame and a base member 21 on the lower surface of the machine frame. The configuration is as follows. A moving frame 25 that moves up and down along the vertical connecting frame 24 is provided with a pair of left and right rails 26 and 26, and a loading / unloading body 29 including a suction hand 28 that loads and unloads the sample box back and forth along the rails 26 and 26. Is provided. The forward movement of the suction hand 28 along the rails 26 and 26 is caused by the forward rotation of the forward / reverse motor 27, and the reverse movement is caused by the reverse rotation of the motor 27.
[0012]
The suction hand 28 is composed of an electromagnet body 28a that is attracted to the tip by energization and is turned upside down by the action of the forward / reverse motor 30, and a pair of upper and lower protrusions 28b, 28b integrated with the electromagnet body 28a. The projections 28b and 28b can be engaged and held in the vertically symmetrical reversing holes 5e and 5e formed by adsorbing the front plate 5c of the sample box 5 and forming the front plate 5c. By the reversal rotation, the posture change operation is performed between the standard posture in which the open upper surface 5a of the sample box 5 faces upward and the reversed posture in which the bottom 5b faces upward. Reference numeral 31 denotes a horizontal movement motor that moves the vertical connection frame 25 in the left-right direction, and reference numeral 32 denotes a vertical movement motor that moves the movement frame 26 up and down. Reference numeral 33 denotes an optical sensor that can detect the presence or absence of the sample box 5 when the sample box 5 is carried out of the storage space while being sucked and held, and the sample box 5 is properly sucked when it is carried out during finishing conveyance or intermediate moisture confirmation processing. It is the structure which can detect whether it is done. Moreover, when the sensor detects the sample box 5 in spite of an operation (for example, a sample box unloading operation) in which the sample box 5 is not sucked and held in the normal state, an alarm can be given.
[0013]
A drying air circulation unit 10 is formed on the rear side in the machine frame of the sample dryer 1. A space having an appropriately narrow front and rear width is formed on the back side of the large number of sample boxes 5, 5..., The storage spaces 7, 7,. On the back surface side of the opening / closing door 34, a pair of ducts 35, 35 having a rectangular section that is long in the vertical direction are formed. The upper and lower sides of the duct 35 are opened, a heater 36 is provided in the middle of these ducts, and a suction fan 37 is disposed in the vicinity of the upper surface opening portion side. Reference numeral 38 denotes an outside air inlet formed in the machine frame wall near the suction fan 37. A temperature sensor 39 is disposed at the lower outlet of the duct 35. When the heater 36 is turned on and the suction fan 37 is actuated, the duct 35 is ventilated from above to below, and is heated by the heater 36 during that time to become dry air, rises outside the duct 35, and again becomes the outside air. It is possible to circulate the drying air through the duct 35 while mixing. When the drying air temperature detected by the temperature sensor 39 reaches the preset drying air temperature, the heater 36 is turned off and again below the set temperature. In this configuration, the circulating drying air temperature is controlled while energization is turned on.
[0014]
Accordingly, the drying air circulation path 10a is formed by the drying air that flows from the upper side to the lower side of the duct 35 and becomes the drying air rising from the duct 35 and rising. The drying air introduction path 7b, 7b,... Of the sample box storage space 7 is seen in the ascending side path of the drying air circulation path 10a, and the introduction fans 40, 40,. A part of the drying air is introduced into the predetermined drying air introduction path 7b by the on-operation.
[0015]
In the above embodiment, the ducts 35, 35 are formed on the back side of the open / close doors 34, 34. Therefore, when the open / close doors 34, 34 are opened for internal inspection, the back of the storage space of the sample box 5 is exposed. These peripheral inspections are easy. In addition, although the heater 36 as a dry-air adjustment apparatus was provided in the duct 35, it may be outside and there exist a dehumidifier other than a heater as a dry-air adjustment apparatus.
[0016]
41, 41... Are exhaust fans provided on the upper surface of the machine frame, connected to the air outlets of the storage spaces 7, 7... Connected in the vertical direction, and passed through the sample grain accommodated in the sample box 5. It is a configuration that can collect and exhaust the wind. The flow meter 42 of the flow path connecting the moisture measurement sample input position B and the moisture measurement sample receiving position C will be described in detail. The flow path 42 includes a hopper 42a and a narrow vertical path 42b following the hopper 42a. A portion of the side wall of the hopper 42a is cut out to form a small amount of sample grain reservoir 42c. A single grain feeding mechanism 43 comprising a pair of left and right feed spirals 43a and 43b is provided so as to look below the pool portion 42c. The single grain feeding mechanism 43 is a part of the configuration of the moisture meter 18, but the moisture meter 18 body is fixedly provided in the vicinity of the flow channel 42. A pair of electrode rolls 44 is disposed inside the main body, and the electrical resistance value is converted to a moisture value while sequentially crushing the grain that is fed out one by one. When the moisture value of a plurality of grains is calculated for each grain, the average moisture value is calculated. 45 is a shutter that temporarily holds the grain other than the sample grain supplied for moisture measurement in the vertical path 42b until the sample box 5 moves from the moisture measurement sample loading position B to the moisture measurement sample receiving position C. The shutter 45 is closed to enter the holding state. When the sample box 5 moves to the moisture measurement sample receiving position C and enters a standby state, the timer control is performed to open the shutter 45. Reference numeral 46 denotes a container for taking out the crushed sample supplied for moisture measurement.
[0017]
The moisture detection signal is arithmetically processed by the control unit 4 which will be described later, and a signal output of each part operation is made. The relationship between the moisture measurement result and the end of sample drying will be described below. The measured moisture value (initial moisture value) by the external weighing machine is M0 (%), the intermediate measured moisture value Mn (%), the finished moisture value Me (%), and the drying rate A (%). The initial drying time H1 is calculated from the received moisture value M0 and the finished moisture value Me. That is,
H1 = ((M0−Me) / A) / 2
It is. The intermediate moisture value M1 can be measured when the drying time H1 has elapsed. That is, the suction hand 28 unloads the corresponding sample box 5, moves to the moisture measurement sample loading position b, inverts the sample box 5, and puts the entire amount into the hopper 42a. It is supplied to the total 18 and the moisture is measured. The average moisture value is M1. The controller 4 calculates the next drying time (H2) from the intermediate moisture value M1 and the finishing moisture value Me. That is,
H2 = ((M1-Me) / A) / 2
It is.
[0018]
When the H2 time elapses, the sample box 5 is again carried out to the moisture measurement sample loading position B to receive moisture measurement, and the same processing and calculation are performed. When the moisture value Mn for the (n + 1) -th measurement is used, the (n + 1) -th drying time is
H (n + 1) = ((Mn-Me) / A) / 2
It is expressed. Based on the calculation of the next drying time H (n + 1), the sample box 5 is returned to the predetermined storage space 7 and continues to be dried. As the drying progresses, the intermediate measured moisture value Mn is equal to the finished moisture value Me + α. Within the range, that is, when the final moisture measurement range α (for example, α = 1%) is approached and the final finished moisture value is approached, only the drying is performed and the moisture measurement is not performed even if the time elapses. When it reaches, the corresponding sample box 5 is transported to the sample discharge position D after completion of drying, and waits at the entrance of the self-test apparatus 2.
[0019]
The drying rate A may be a preset value or a calculated value by actual measurement. However, when the drying can be stably performed, there is no problem with the set value. The configuration of the self-test apparatus 2 will be described. The self-assessment device for cocoons, after removing the cocoons, sifts and sorts the sized unpolished rice and waste rice, calculates the ratio of them and calculates the yield of the receiving potatoes. It is the basis. The outlet of the chute 19 is looked into the entrance hopper 50 of the self-test device 2, and the soot after sample drying is completed can be received. The entrance hopper 50 communicates with the lower weighing hopper 51 and is configured so that weighing by the weighing instrument 52 can be executed in the waiting state in the weighing hopper 51. The excess portion exceeding the predetermined volume is directly supplied to the entrance hopper 50 via the guide chute 53 to the slot 54.
[0020]
On the other hand, the inner tub of the weighing hopper 51 is provided at the upper part of the machine frame via the slot 55 when the gate is opened, and is supplied to the detaching section 57 having a pair of detaching rolls 56, 56. 58 is a dust exhaust fan and 59 is a dust exhaust cylinder. A single rotary sorting cylinder 60 is provided below the removal unit 57. The crushed brown rice is supplied to the sorting cylinder 60, and is classified into waste rice leaking from the sieve hole and conditioned brown rice remaining in the sorting cylinder. The sorted and separated waste rice and conditioned brown rice are supplied to the weighing hopper 51 in order and are weighed separately.
[0021]
The above-mentioned weighed waste rice and brown rice are supplied to a slot 54 that receives the excess rice cake. The outlet of the slot 54 is supplied to the sample pack machine 3 via the cyclone 61 and packed in the order of rice bran, waste rice, and brown rice previously supplied to the slot 54. That is, the sample pack machine 3 is configured so that the belt-like film is sequentially drawn out from the left and right rolls, and the bag sample is first supplied to the film formed into a bag shape by the operation of the vertical and horizontal welding mechanisms, and the self-assessment work is completed. At the same time, it is packaged in the order of waste rice and brown rice. A slip printed with receipt data and weighing inspection data is enclosed with the cooked brown rice sample. 62 is a slip output printing machine.
[0022]
The control unit 4 controls each operation control of the sample dryer 1, the self-test device 2, and the sample pack machine 3 and the related control between the devices. For example, the control unit 4 includes a receiving data input unit such as a receiving date, a name of a grain taker, and a variety, and the input data includes the status of the sample box 5 in the sample dryer for drying the sample basket from the receiving weighing machine, and voluntary. This is an index for centrally managing the test results by the test device 2.
[0023]
In addition to the input of the moisture meter 18 data and related control outputs, the control unit 4 operates the loading / unloading robot 20 of the sample dryer 1, controls on / off of the heater 36 of the drying air circulation unit 10, and operates the self-test apparatus 2. It controls a series of operations such as control and input / output processing of various weighing signals, control of the sealing mechanism of the sample pack machine 3, slip printing output, and sealed output.
[0024]
The operation of the above example will be described. The carry-in / out robot 20 of the sample dryer 1 sucks and holds the empty sample box 5 with the suction hand 28, inserts it into the receiving sample input position a, and stands by. The soot as the sample grain from the load receiving weighing machine is conveyed and is put into the sample box 5 from the discharge port. The loading / unloading robot 20 moves vertically and horizontally toward the empty storage space 7 set in advance, and the sample box 5 reaches the front thereof. Subsequently, as the motor 27 ′ rotates forward, the moving frame 26 moves forward to insert the sample box 5 into the storage space 7. When the energization of the suction hand 28 is released here, the sample box 5 is inserted and maintained in the storage space 7. The moving frame 26 is retracted and engaged in the next sample box loading / unloading. When the sample box 5 is inserted and held in the storage space 7, the corresponding introduction fan 40 is actuated, and a part of the drying air is introduced from the circulation path 10 a of the drying air circulation unit 10 to act on the sample basket and dry. . A procedure for managing the drying end time will be described based on the following numerical values. what if,
Receiving moisture value: M0 = 25 (%)
Intermediate measurement moisture value: Mn = Mn (%)
Finishing moisture value: Me = 15 (%)
Drying rate: 1 (%)
First drying time: H1
Next drying time: H (n + 1)
Final moisture measurement range: α = 1 (%)
And First, the initial drying time H1 is
H1 = ((25-15) / 1) / 2 = 5 (hours)
If the intermediate moisture value by moisture measurement after the initial drying time has elapsed is 16 (%), Mn = 16 (%).
H2 = ((16-15) / 1) /2=0.5 (hours)
Since H2 ≦ Me + α, a drying end signal is output after the drying time of H2 has elapsed, and the introduction fan 40 is turned off. Accordingly, the supply of dry air is stopped.
[0025]
The other example shown in FIG. 12 will be explained. In the theoretical continuous drying data (two-dot chain line in the figure) at the set drying rate of 1%, the initial drying time of 5 is required for drying from the received moisture value of 25% to the final moisture value of 15%. In time, the measured moisture value becomes 20%, and after 7.5 hours, the second measured moisture value becomes 17.5%, after 8.75 hours, the third measured moisture value becomes 16.3%, and so on. Finish drying. In contrast to this theoretical straight line, the measured drying data (solid line in the figure) does not necessarily ensure a set drying rate of 1% due to variations in hot air temperature, differences in the density of the sample in the sample box, etc. In the first drying time of 5 hours, the measured moisture value suddenly became 17.5%, and the actual drying rate was 1.5%. The measured moisture value was 16.5% after the second drying time of 6.25 hours and the measured moisture value of 15.9% after the third drying time of 7 hours, and this moisture value of 15.9% is the final moisture measurement range. When it becomes α (= 1%) or less and the final drying time of 0.9 hours elapses, the drying is finished.
[0026]
In this way, although the drying does not progress according to the theoretical continuous drying data, the initial drying time, the second drying time,... Can be sequentially calculated from the actually measured moisture value, and when it falls within the predetermined range, the timer management is switched to the drying finish. It will be. Therefore, there is little risk of overdrying, and management at the time of final finishing is based only on a timer, so that work efficiency is not lowered.
[0027]
Since it is configured to manage the moisture at the end of drying as described above, drying can be continued while calculating the drying time from the measured moisture and drying rate, and it is necessary to periodically detect moisture in the sample grain However, it is sufficient to provide a single moisture meter for a plurality of samples, which can contribute to cost reduction. Since the final moisture measurement range is determined and the moisture measurement is omitted at the end, it is possible to quickly determine the end of drying.
[0028]
In the above embodiment, the drying rate A is calculated with a fixed constant. However, each time the moisture is measured, the drying rate A is compared with the actual drying rate value, and an appropriate correction process is performed while confirming whether the drying rate A is correct. May be used. In this case, the accuracy can be improved. The sample basket in the sample box 5 that has been dried is transferred to the chute 19 by reversing the electromagnet body 28a at the tip of the suction hand 28 at the sample discharge position D. This dried sample basket reaches the entrance hopper 50 of the self-test apparatus 2, a predetermined volume of the kite is secured, and is subjected to a self-test process. The remaining bag is put into the sample pack machine 3 as it is, packed in a bag, and waits for the remaining test samples to be put in.
[0029]
The soot that has entered the self-test device 2 first enters the weighing hopper 51 and is weighed by the weighing instrument 52. The measurement data is stored in a predetermined storage unit of the control unit 4. Immediately after the measurement, it is supplied to the removal unit 57 via the slot 55. After being deflated by the pair of deflation rolls 56, 56, the brown rice enters the rotary sorting cylinder 60 and undergoes a sorting process. The waste rice that has been subjected to the rotational sorting action for a predetermined time set in advance and leaks from the sieve hole is first supplied to the weighing hopper 51 and weighed, and then the conditioned rice is discharged to the weighing hopper 51 and weighed. These weighing data are output and stored in the same manner as the soot weighing data. The control unit 4 calculates the yield of conditioned brown rice.
[0030]
As soon as the weighing with the weighing hopper 51 is completed, the waste packer and the brown rice are separately packed into the sample pack machine 3 by the slot 55. When the brown rice sample is put in, a slip printed with the receipt data, the weighing data, the calculation yield, etc. is inserted and sealed together.
[Brief description of the drawings]
FIG. 1 is a schematic front view of an apparatus.
FIG. 2 is a plan view thereof.
FIG. 3 is a side view of a sample loading / unloading robot.
FIG. 4 is a side view of a sample loading / unloading robot.
FIG. 5 is a side sectional view of a sample dryer.
FIG. 6 is a cross-sectional view showing the support structure of the vertical connection frame.
FIG. 7 is a plan view of a sample dryer.
FIG. 8 is a front view of a moisture measuring unit.
FIG. 9 is a front sectional view of the self-test apparatus.
FIG. 10 is a side sectional view of the self-test apparatus.
FIG. 11 is a side sectional view of the self-test apparatus.
FIG. 12 is a graph showing the relationship between drying time and moisture value.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Sample dryer, 2 ... Self-test device, 3 ... Sample packing machine, 4 ... Control part, 5 ... Sample box, 5a ... Top surface, 5b ... Bottom part, 5c ... Front plate, 5d ... Sample partition, 5e, 5e ... Inversion hole, 6 ... sample loading / unloading section, 7 ... storage space, 7a ... ventilation opening, 7b ... (individual) introduction path, 7c ... exhaust port, 8 ... sample box storage section, 9 ... sample loading / unloading section, 10 ... Dry air circulation part, 10a ... Dry air circulation path, 11, 12, 13, 14 ... Sample box insertion port, 15 ... Guide duct, 16 ... Cyclone, 17 ... Guide chute, 18 ... Moisture meter, 19 ... Chute, 20 ... Loading / unloading robot, 21 ... base member, 22, 23 ... horizontal rail, 24 ... vertical connection frame, 25 ... moving frame, 26, 26 ... rail, 27 ... forward / reverse rotation motor, 28 ... suction hand, 28a ... electromagnet body, 29 ... in / out, 29 , 29b ... Projection, 30 ... Forward / reverse motor, 31 ... Horizontal movement motor, 32 ... Vertical movement motor, 33 ... Optical sensor, 34, 34 ... Open / close door, 35, 35 ... Duct, 36 ... Heater, 37 ... Suction fan (Circulation fan), 38 ... outside air introduction port, 39 ... temperature sensor, 40, 40 ... introduction fan, 41 ... exhaust fan, 42 ... downflow passage, 42a ... hopper, 42b ... vertical passage, 42c ... reservoir, 43 ... one Grain feeding mechanism, 43a, 43b ... feed spiral, 44 ... electrode roll, 45 ... shutter, 50 ... inlet hopper, 51 ... weighing hopper, 52 ... weigher, 53 ... guide chute, 54 ... thrower, 55 ... thrower, 56, 56 ... De-rolling roll, 57 ... De-evaporating part, 58 ... Dust-discharging fan, 59 ... Dust-extracting cylinder, 60 ... Rotating sorting cylinder, 61 ... Cyclone, 62 ... Slip output printing machine

Claims (1)

In a moisture content control device in a sample grain drying apparatus provided with a sample grain drying apparatus for drying a plurality of sample grains to a predetermined moisture and a moisture meter 18 for measuring the moisture of the sample grains , the moisture initial value M0 is measured by the moisture meter 18 At the same time, the drying rate A of the sample grain is set, and from these initial moisture M0 and drying rate A, an initial drying time H1 for measuring moisture before reaching the finished moisture value Me is obtained, and this initial drying time H1 After drying, the intermediate moisture value Mn is measured with the moisture meter 18, and the next drying time H (n + 1) required from the intermediate moisture value Mn and the drying rate A to the finished moisture value Me is obtained. This next drying time H (n + 1) a structure forming the drying output for), the intermediate moisture value Mn reaches a moisture content within the range plus final moisture measurement range α which preset moisture value Me finishing, upon subsequent next drying H (n + 1) moisture content control in the configuration and sample grain drying apparatus to finish drying without water measured after the drying output progress for.

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