KR20140140054A - Method for drying grain - Google Patents
Method for drying grain Download PDFInfo
- Publication number
- KR20140140054A KR20140140054A KR1020147027351A KR20147027351A KR20140140054A KR 20140140054 A KR20140140054 A KR 20140140054A KR 1020147027351 A KR1020147027351 A KR 1020147027351A KR 20147027351 A KR20147027351 A KR 20147027351A KR 20140140054 A KR20140140054 A KR 20140140054A
- Authority
- KR
- South Korea
- Prior art keywords
- hot
- drying
- curled
- dryer
- hot air
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/06—Grains, e.g. cereals, wheat, rice, corn
Abstract
A drying apparatus equipped with a hot-air dryer having a hot-air drying unit and a drying machine having a plurality of stages in series is used to make a curling of the raw material by one pass to make a moisture-adjusted curl. In each drying unit, the hot air temperature is adjusted so as to become the curled moisture value at the time of delivery set in the stage. The amount of moisture to be reduced at each stage is set as the moisture value to be achieved at each stage from the difference between the moisture value and the target moisture value of the raw material curvature. The hot air temperature is determined from the difference between the curdle moisture value at the time of reception and the curdle moisture value at the time of delivery at each stage. This temperature is calculated by experiment and stored as a data table in the control unit to calculate a suitable hot air temperature in the future.
Description
BACKGROUND OF THE
The rice grains and harvested grains are dried before preservation to regulate moisture to prevent the occurrence of fungi. In this case, if it is dried rapidly by a single drying, it becomes a defective product in which cracks are generated in the grain. Therefore, it is general to set the drying step to a plurality of stages and gradually dry to a predetermined moisture value. On the other hand, in the harvesting season, the raw material grains just after harvest are concentrated in a drying facility having a grainy drying function. For this reason, in a large-scale grit-hole drying plant, the grit is usually dried with a grit-drying plant equipped with a number of dryers.
In such a drying facility, a plurality of hot-air dryers are provided adjacent to each other, and the respective receiving and discharging sides are connected to each other through a shearing machine and a curled conveying path. Then, the raw material curl is put into a leading hot-air dryer, passed through each hot-air dryer through a shearing machine and a curled-material conveying route, and dried by passing through a curl to a hot air dryer at the end.
It is an object of the present invention to provide a method and apparatus for drying a curled-grain dryer, which is capable of drying a curled-grain to a predetermined finishing moisture value only once by passing the curled-drying equipment continuously connected with a plurality of hot- And to provide a method for drying a grain.
In the grainy drying facility used in the present invention, the hot-air dryer having the drying section with hot air and the storage section is moved in series from the first-stage dryer to the final-stage dryer at the final stage, Respectively.
In the hot-air dryer of each stage, the moisture value of the raw material curl and the moisture value of the predetermined moisture-adjusted curl are matched with the appropriate moisture reduction rate (reduction rate) for the curl to be subjected to moisture adjustment, The raw material curl charged by the No. 1 dryer is sequentially dried by the dryer of each stage, and the moisture-adjusted curl is taken out from the final dryer by one pass as a whole. In the hot-air dryer at each stage, the curvature water value immediately before being input is measured, and the hot air stream supplied to the hot-air drying unit of each dryer, based on the detected moisture value and the curvature moisture value at the time of delivery set in each hot- The temperature is adjusted. The hot air temperature is calculated so that the curling moisture value at the time of delivery set in the hot-air dryer of the stage is calculated based on the data of the grit water-hot air temperature table stored in the control unit.
The hot-air drier at each stage is connected in series with respect to the flow of the curled-up, and the delivery portion of the hot-air dryer at the upstream end is connected to the accommodating portion of the front end dryer and the rear end dryer at the corrugated transport path. There is a case where a grainy drying facility capable of switching the flow of the curled grains to the front end side and the rear end side is used. The switching valve is switched to the upstream side at the beginning when the curled-up drying method is executed, and when the curled grains having an amount exceeding the capacity of the hot air drying section are initially stored in the hot air dryer at the upstream side, And the switching valve is switched to the rear end side when all of the original curved portions at this position are returned to the storage portion so that the curtain passing through the hot air drying portion is switched to the next stage There is a case of driving.
It may be judged as timely that all of the curled grains having an amount exceeding the capacity of the hot air drying portion originally stored in the drier at the preceding stage and all of the original curled grains in the hot air drying portion are returned to the storing portion. A level sensor capable of knowing the degree of accumulation of the curved grains can be used.
In addition, there is also a case where the curled-up drying method for driving the hot-air dryer and the shearing machine at the rear stage at the timing when all of the initial curl of the hot-air drying unit in the hot-air dryer at the previous stage is returned to the storage unit.
As a means for stopping the grainy drying facility, a grainy sensor for detecting the grainy grain sent out by the hot-air dryer at each stage is disposed at the curved feeding point of the grain machine, and when the feeding of the grain is not detected, And a method of stopping the operation of the shearing machine may be adopted.
As a result, the hot-air dryer or the shearing machine at each stage is sequentially stopped from the No. 1 dryer side. The loading machine attached to
The plurality of hot-air dryers constituting the grainy drying apparatus perform circulation operation for a short time immediately after the start of operation, but the operation is immediately started and there is little waste of time in the grainy drying operation.
Since the moisture-regulated brittle is obtained only by passing the raw material brittle once through the brittle drying equipment, it is possible to dry a large amount of brittle material to a moisture value that can efficiently be stored.
In each stage of the grainy drying facility, since the grainy water content is reduced without any difficulty until the water-adjusted grainy grain is obtained from the raw grain curl, drying is progressed, so that occurrence of defective grainy grain such as cracking occurs in the grainy grain. The drying operation of the hot air dryer at this stage can be appropriately carried out since the hot air temperature is determined on the basis of the moisture value measured in this and the moisture value set in the hot air dryer at this stage.
Further, since the deficiency in the degree of drying in the front end is compensated by adjusting the temperature of the hot air at this stage, the moisture value of the moisture-adjusted curved grain sent out from the hot-air dryer at the final stage becomes the preset adjusted moisture value.
The control of only the operation time and the temperature adjustment by the timer or the curled level sensor is mainly performed, so that the configuration of the control section can be simplified.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view schematically showing the whole of a grain drying plant used for drying rice. Fig.
2 is a front view for explaining a functional unit (drying unit) of a grainy drying facility;
3 is a view for explaining a top surface positional relationship of the curved grains accumulated in the holding tank.
4 is a block diagram of a control unit;
5 is an example of the grainy water-hot wind temperature data table.
6 is a processing flow chart showing the operation of a base.
7 is a first half of a processing flow showing an operation in a drying unit.
8 is a second half of a processing flow showing an operation in a drying unit.
9 is a block diagram of a control unit (second embodiment).
10 is a processing flowchart showing the operation of the period (the second embodiment).
11 is a first half of a processing flow showing an operation in a drying unit (second embodiment).
12 is a second drawing of the processing flow showing the operation in the drying unit (same as the second embodiment and the first embodiment).
Hereinafter, the first embodiment will be described.
[Structure of Grain Drying Equipment]
This method for drying the curled grains is carried out in the
The
The putting machine (2) has a hopper (6) at the lower part, and in this embodiment, it houses the raw rice collected in the cavity drying equipment. The grain machine (2) transports the raw rice upward and feeds the raw rice from the upper part of the storage tank (7) of the hot air dryer (3) into the tank.
The hot air dryer 3 (Fig. 2) is composed of the
In this embodiment, the capacity of the hot-
The hot
As shown in Fig. 2, the hot air generated in the
The
Here, as shown in Fig. 1, one set of the hot air drier 3 and the
Therefore, when the switching
The
The signals from these sensors are transmitted to the
In the memory of the
This data shows the temperature of the hot air which can be adjusted by adjusting the moisture content between the raw rice paddy and the predetermined target moisture value (the moisture value of the water-regulated rice) to the appropriate moisture susceptibility from the rice paddy . The data is determined experimentally.
That is, in the case of the raw green rice to be collected, the moisture value is about 25%, and this moisture value is lowered to about 14.5% as the target value, and preserved as moisture-regulated rice. In order to efficiently obtain high-quality moisture-regulated rice with few cracks in the grain, the drying process is repeated six times while circulating the rice in one dryer, and gradually dried at a proper moisture susceptibility. In the present invention, this method is followed by gradually drying with the No. 1 drier (3a) to No. 6 drier (3f) in which the raw rice poured into No. 1 drier (3a) is arranged in series, And the moisture-regulated rice is obtained from the dryer (3f).
A preferable example of the moisture value reduction standard in each
[Operation by the control unit]
The
6 shows an operation flow that is a period. When the
The raw rice is accumulated in the
The flag is set to f = f + 1 (step S3) and the
When the
In this state, it waits for 100 minutes to pass (step S9). During this time, since the green leaves are continuously supplied through the putting
After 100 minutes have elapsed, it is checked whether or not the switching
Then, the
Thus, the curvature of the inside of the
Also, during the circulating operation, the green rice is continuously supplied from the putting
The hot air from the
After 20 minutes have elapsed (step S13), the
The operation of the first stage of the
When the
Further, when the
The operations including the circulation operation and the sitting operation from step S7 to step S17 starting from the moisture measurement (step S7) are also performed in the
In this manner, the drying
If the moisture value of the curled grain sent out from the drying unit (5) of the next stage to the drying unit (5) of the next stage does not reach the set moisture value which should be achieved at the previous stage by any circumstances, The second row is employed in each of the data tables (a) to (f) in the curved moisture-hot air temperature table, and so on.
As described above, the
The green rice sent out by the putting
As the drying of the curled grains progresses, the volume of the raw material becomes smaller, so that the curling discharge speed tends to be faster in the drying unit on the lower side. In such a case, the feeding
The second embodiment will be described below.
In the second embodiment, the structure of the grained drying facility is basically the same as the structure of the grained drying facility in the first embodiment described above. However, the
Further, the
The operation of each part is the same as that of the first embodiment. A detailed description will be omitted in order to avoid redundancy.
In the second embodiment, the operation by the control unit is basically the same as the above-mentioned operation by the control unit in the first embodiment, and the grain drying method of the second embodiment among the operations of the
However, in the first embodiment, as shown in the flow of Fig. 6, the timing at which the f
10, 11 and 12). In the step S5 of the period program, the
That is, similarly to the case of the first embodiment, in the second embodiment, the circulation operation is started when 50 t of curl is accumulated in the
All the raw rice to be treated is sent to the
As described above, also in the second embodiment, the raw rice put into the
The position at which the
In the second embodiment, since the timing of the start of the circulation operation and the timing of switching to the sit-down operation are performed according to the actual accumulation amount of the curl, the quantitative processing can be accurately performed. There is a possibility that the time loss can be further reduced. That is, when the timing of the start of the circulation operation and the timing of switching to the sit-down operation follow the timing as in the first embodiment, there is a possibility of waiting for an extra time even though the amount of the grooves reaches the set amount for some reason , Such a temporal loss can be solved. In addition, even if the accumulation amount of the grains is insufficient for some reason, the problem of initiating the circulation operation or the run-in-place operation due to the expiration of the atmosphere is also eliminated.
Further, as the drying of the curled papers progresses, the volume of the raw material becomes small, and even if the curling discharge speed tends to be accelerated in the drying unit on the lower side, there is little effect.
In the examples, the drying unit (5) was set to six stages, but it can be increased or decreased depending on the relationship between the drying rate of moisture and the type of grain to be dried.
In the embodiment, the amount of the curled residue stored in the
Instead of the gas burner type, the
The hot-
1: Grain drying plant
2: Feeding grain machine
3: Hot air dryer
4: Grain machine
5: Dry unit
6: Hopper
7: Reservoir tank
8:
9:
10: Reservoir
11: Hot air dryer
12: Hot air room
13: drying passage
14:
15: Heat exchanger
16: blowing furnace
17: Exhaust
18: Adjustment valve
19:
20: Burner
21: Switching valve
22:
23: Curled conveying path on the front end side
24: Cropped conveying path on the downstream side
25: Moisture Meter
26: Output sensor
27: Grain sensor
28: Temperature sensor
29: Grain level sensor (50 t position)
30: Grain level sensor (60 t position)
Claims (6)
Air drying rate of the curled grains is appropriately assigned to the hot-air dryer at each stage based on the moisture value of the raw curl, and at the same time, in the hot-air dryer at each stage, the curvature moisture value immediately before being charged is measured, The temperature of the hot air to be supplied to the hot air drying unit of each hot air dryer is calculated from the curled moisture-hot air temperature table stored in the control unit based on the value and the moisture value at the time of delivery set in each dryer, And the temperature of hot air to be supplied is adjusted.
In the plurality of hot air dryers connected in series with respect to the flow of the curved grain, the delivery portion of the hot air dryer at the upstream end is connected to the accommodating portion of the front end dryer and the rear end dryer in the curled conveying path, and a switching valve is disposed in the middle of the curled conveying path And the flow of the curled grains is switched to the front end side and the rear end side and when the curled matter is first switched to the front end side and the curled grains larger than the capacity of the hot air drying portion are initially stored in the hot air dryer at the front end, Wherein the circulating operation is performed by returning the curved lid to the storage portion and when all of the curved portions at this position are returned to the storage portion, the switching valve is switched to the rear end side to perform the running operation.
And that the above-mentioned hot-air drier in the above-mentioned stage stores the curled grains in an amount exceeding the capacity of the hot-air drying section originally and that all the initial curled-up portions in the hot-air drying section are returned to the storing section A method of drying grainy.
In the above-described hot-air dryer of the preceding stage, a curled-grain level sensor in which curled grains having an amount exceeding the capacity of the hot-air drying section were initially stored, and all of the initial curled- Is judged by a signal from the drying unit.
Wherein the initial curl of the hot air drying part in the hot air dryer at the front end is returned to the storage part and then the hot air dryer and the shearing machine at the rear end are driven.
Wherein a curled-up sensor for detecting the curl to be fed by the hot-air dryer at each stage is disposed, and when the feeding of the curled-up is not detected, the operation of the hot-air dryer and the shearing machine at that stage is stopped.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2012/055635 WO2013132586A1 (en) | 2012-03-06 | 2012-03-06 | Method for drying grain |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020187028579A Division KR102004669B1 (en) | 2012-03-06 | 2012-03-06 | Method for drying grain |
Publications (1)
Publication Number | Publication Date |
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KR20140140054A true KR20140140054A (en) | 2014-12-08 |
Family
ID=49116102
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020147027351A KR20140140054A (en) | 2012-03-06 | 2012-03-06 | Method for drying grain |
KR1020187028579A KR102004669B1 (en) | 2012-03-06 | 2012-03-06 | Method for drying grain |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020187028579A KR102004669B1 (en) | 2012-03-06 | 2012-03-06 | Method for drying grain |
Country Status (4)
Country | Link |
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KR (2) | KR20140140054A (en) |
CN (1) | CN104160232B (en) |
TW (1) | TWI550246B (en) |
WO (1) | WO2013132586A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103808119B (en) * | 2014-01-26 | 2016-05-11 | 梁群侦 | A kind of environmental protective energy saving drying apparatus |
CN105043072B (en) * | 2015-07-28 | 2017-05-17 | 洪知瑜 | Multi-functional grading dryer by adoption of wind energy |
CN106931762A (en) | 2017-03-18 | 2017-07-07 | 湖北金汉江精制棉有限公司 | Purified cotton dries moisture control subsystem |
CN107883693A (en) * | 2017-12-14 | 2018-04-06 | 无锡市尚德干燥设备有限公司 | The marine alga dryer of multisection type drying |
CN115451661B (en) * | 2022-08-03 | 2023-11-14 | 农业农村部南京农业机械化研究所 | Microwave convection coupling grain drying module, drying system and drying method |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5986593U (en) * | 1982-12-01 | 1984-06-12 | 株式会社クボタ | grain dryer |
JPS60188787A (en) * | 1984-03-07 | 1985-09-26 | 株式会社山本製作所 | Method of drying cereal grain and controller for temperatureof hot air in cereal grain drier |
JP2559148Y2 (en) | 1990-11-09 | 1998-01-14 | ヤンマー農機株式会社 | Grain drying equipment |
JP4172002B2 (en) * | 1999-08-24 | 2008-10-29 | 株式会社サタケ | Circulating grain dryer |
CN1239878C (en) * | 2002-11-27 | 2006-02-01 | 井关农机株式会社 | Grain dryer |
JP4135932B2 (en) * | 2004-01-26 | 2008-08-20 | 金子農機株式会社 | Continuous grain drying method and apparatus |
JP4591915B2 (en) * | 2004-07-13 | 2010-12-01 | 金子農機株式会社 | Grain drying facility |
JP4545084B2 (en) * | 2005-11-30 | 2010-09-15 | 金子農機株式会社 | Drying control method in grain dryer |
JP5258377B2 (en) * | 2008-05-14 | 2013-08-07 | 株式会社山本製作所 | Grain drying equipment |
JP5201406B2 (en) * | 2008-09-19 | 2013-06-05 | 株式会社サタケ | Cereal drying method and cereal dryer |
JP2011002205A (en) * | 2009-06-22 | 2011-01-06 | Iseki & Co Ltd | Grain drier |
CN101957125B (en) * | 2009-07-15 | 2012-02-08 | 郑州市飞航真空干燥技术有限公司 | Multiple-effect vacuum continuous drying equipment |
CN201945152U (en) * | 2010-12-03 | 2011-08-24 | 南通市山野实业有限公司 | Fragile material tandem type closed internal circulation dehumidification system |
-
2012
- 2012-03-06 KR KR1020147027351A patent/KR20140140054A/en active Application Filing
- 2012-03-06 KR KR1020187028579A patent/KR102004669B1/en active IP Right Grant
- 2012-03-06 CN CN201280071232.5A patent/CN104160232B/en not_active Expired - Fee Related
- 2012-03-06 WO PCT/JP2012/055635 patent/WO2013132586A1/en active Application Filing
-
2013
- 2013-03-05 TW TW102107718A patent/TWI550246B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN104160232A (en) | 2014-11-19 |
TWI550246B (en) | 2016-09-21 |
CN104160232B (en) | 2016-02-17 |
WO2013132586A1 (en) | 2013-09-12 |
TW201400778A (en) | 2014-01-01 |
KR102004669B1 (en) | 2019-07-26 |
KR20180114221A (en) | 2018-10-17 |
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