JPH04322748A - Grain dryer operation control system - Google Patents

Abstract

PURPOSE:To obtain blended grain by mixing different kind of grain desirous of blending with dried grain while circulating the same when this dried grain is circulated and cooled in the case of obtaining blended rice. CONSTITUTION:The prescribed amount of dried different kind of grain desirous of blending which has prescribed number of kind is supplied to dried grain in the hot air drying device 2 of a grain dryer. Both double circulation cooling and single circulation cooling described below are performed in the intervals of a prescribed time. The different kind of grain is cooled and simultaneously mixed and becomes blended grain. In the double circulation cooling, the dried grain is circulated through both the hot air drying device 2 and a cooler 1. In the single circulation cooling, the dried grain is circulated through only the cooler 1. In the meantime when the dried different kind of grain is cooled, it is mixed. Thereby the need for time in mixing is eliminated and further mixing is surely performed because the dried different kind of grain is mixed while it is cooled.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control method for a grain dryer.

0002

[Prior Art] Conventionally, dried grains of different types that have been dried in a plurality of grain dryers each consisting of a cooling device that cools the grains and a hot air dryer that dries the grains with hot air are mixed. When making a blended rice, either mix the grains of different varieties to be blended before hulling with a huller to make a blended rice, or blend the different varieties of brown rice after hulling before polishing with a rice miller. Mix different varieties of brown rice to make blended rice, or
Alternatively, there was an operation control system in which blended rice was obtained by mixing different types of milled rice to be blended, which were milled using the rice milling machine.

0003

[Problems to be Solved by the Invention] Conventionally, grains have been dried by circulating them through both a cooling device and a hot air drying device, or by single drying, which is drying by circulating only the hot air drying device. is dried in multiple grain dryers for each type of grain, and when the dried grains of different types are mixed to make blended rice, the grains of different types to be blended are husked using a huller. Either the different varieties of unpolished rice after hulling are mixed before being milled to make a blended rice, or the different varieties of unpolished rice after hulling are mixed before being polished using a rice milling machine to make a blended rice, or the different varieties of polished rice that have been polished using the rice milling machine are mixed together. The rice was made into a blended rice or the blended rice was obtained by any of the methods mentioned above.

[0004] For this reason, a special blending time may be required, and the mixing accuracy of grains of different varieties may become poor, so this is an attempt to solve these problems.

[0005]

[Means for Solving the Problems] The present invention provides a plurality of grain dryers comprising a cooling device 1 for cooling grains and a hot air drying device 2 for drying the grains with hot air. When blended rice is prepared by mixing the dried grains of different varieties into the dried grains dried in step 2, the dried grains of different varieties are supplied from another dryer and then the dried grains of different varieties are supplied to the cooling device 1 and the hot air dryer. Double drying in which drying is performed by circulating both the hot air drying device 2 and single drying in which drying is performed by circulating only the hot air drying device 2 is repeated alternately at predetermined time intervals and blended within the cooling time. It has a characteristic operation control system configuration.

[0006]

The grains contained in the hot air drying device 2 of the grain dryer are single-dried by being exposed to hot air while being circulated within the hot air drying device 2. When mixing grains of different types into single-dried dried grains to produce blended grains, when starting the cooling operation of cooling the dried grains, drying in the hot air drying device 2 is performed. A predetermined number of types and a predetermined amount of dried grains of different types to be blended that have been dried in another dryer are supplied to the dried grains, and cooling of the grains is started, and the hot air drying device 2 Single circulation cooling device that circulates only the inside and releases the cooling, the hot air drying device 2, and the cooling device 1
Double circulation cooling, in which both the Becomes grain.

[0007]

[Effects of the Invention] According to the present invention, when blending grains, the dried grains of different types in another dryer are supplied to the dried grains in a grain dryer, and the grains are left to cool. By mixing by alternating single circulation and double circulation, special blending time is not required, and the series of work times can be shortened. At the same time, by mixing by circulation, mixing precision can be improved. was completed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the illustrated example, a plurality of grain dryers 3, for example, four grain dryers 3, are installed to dry grain, and the grains are transferred to each of the dryers 3 from a grain hoist for receiving cargo to a tension transfer device. The structure is such that the grains are packed according to their type through the lower part 4.
It is configured to detect with a weight sensor 3' installed at the corner, and the discharge of the cooled grains dried and cooled in each dryer 3 is as follows:
The grains are discharged through a discharge transfer device 5', and the grains dried in each dryer 3 and left to cool are discharged and supplied to the dryer 3 via the tension transfer device. The dryer 3 has a structure in which a cooling device 1 for cooling the grains is installed in the upper part, and a hot air drying device 2 for drying the grains is installed in the lower part in a stacked state. The inlet transfer device 6', the discharge transfer device 5', the huller 4', etc. represent a grain processing device 8' which is controlled by a central control device 7'.

The cooling device 1 and the hot air drying device 2 of the dryer 3 have rectangular shapes that are long in the front and back direction, and the cooling device 1 on the upper part of the machine wall 4 has a cooling transfer spiral on the top so that it can rotate freely. An internal cooling transfer gutter 5 and a cooling ceiling board 6 are provided, and a cooling storage chamber 7 for storing grains is formed below the cooling ceiling board 6. Each cooling chamber 10 is provided between the cooling ventilation chambers 8, 8 and each cooling ventilation exhaust chamber 9 and is communicated with the cooling storage chamber 7, and the lower part of each cooling chamber 10 is provided with grains. Each cooling feeding valve 11 for feeding and flowing down is rotatably supported, and a cooling grain collecting trough 12 rotatably equipped with a cooling grain collecting spiral is provided below each cooling chamber 10 for communication. The bottom plate 13 of the cooling grain gutter 12 can be opened and closed by a bottom plate opening/closing motor 14 that rotates in forward and reverse directions.

A flow-down shelf 15 is provided below the cooling grain collection gutter 12, and a drying ceiling plate having a drying transfer gutter 16 rotatably equipped with a drying transfer spiral and a supply port 17 is provided below the flow-down shelf 15. A drying storage chamber 19 for storing grains is formed below the drying ceiling plate 18, and this drying storage chamber 19
On the lower side, each drying chamber 22 is provided between the drying ventilation chambers 20, 20 and each drying ventilation chamber 21 and communicated with the drying storage chamber 19, and the lower part of each drying chamber 22 is used for feeding grains. Each drying feed-out valve 23 to be flowed down is rotatably supported by a shaft, and a drying grain collection gutter 24 rotatably equipped with a drying grain collection spiral is provided below each drying chamber 22 and communicated with the drying grain collection gutter 24. Machine wall 4
On the front side, a cooling air duct chamber 26 having an intake port 25 that can communicate with the cooling air chambers 8, 8 is formed, and a drying air duct chamber 27 that can communicate with the drying air chambers 20, 20 is formed on the front side. However, a burner case 29 containing a burner 28 is detachably provided outside the drying air passage chamber 27.

On the rear side of the machine wall 4, there is formed a cooling air exhaust duct chamber 31 that can communicate with each of the cooling air exhaust chambers 9, and this cooling air exhaust duct chamber 31 has a central rear side cooling air exhaust duct chamber 31 that can communicate with each of the cooling air exhaust chambers 9. A cooling exhaust fan 3 is installed in the body 32.
3, this cooling air exhaust fan 33 is configured to be rotationally driven by a cooling air exhaust motor 34, and also forms a drying air exhaust duct chamber 35 that can communicate with each of the drying air exhaust chambers 21, and this drying air exhaust A drying exhaust fan 37 is installed in the air passage chamber 35 and the rear side exhaust body 36.
This drying air exhaust fan 37 is configured to be rotationally driven by a drying air exhaust motor 38.

A cooling grain raising machine 39 is provided on the upper right side of the front outside of the machine wall 4, and a cooling bucket conveyor 40 is provided inside.
The upper end is provided with a cooling discharge pipe 41 to communicate with the starting end of the cooling transfer gutter 5, and the lower end is provided with a cooling supply gutter 42 to communicate with the cooling transfer gutter 5. 12 terminal end, and a supply on/off valve 43 is installed on the side of the cooling supply gutter 42.
It is configured to open and close by the forward and reverse rotation of the supply opening/closing motor 44. Further, a drying grain raising machine 45 is provided at the lower left side, a belt with a drying bucket conveyor 46 is stretched inside, and a drying dumping tube 47 is provided at the upper end to connect the drying transfer gutter 1.
6, the starting end and the cooling supply gutter 42, and the lower end,
A drying supply gutter 48 is provided to communicate with the terminal end of the drying grain collecting gutter 24. 55 and 56 are grain hoist motors.

[0013] The air cooling grain raising machine 39 and the drying grain raising machine 4
5 is provided with moisture sensors 53 that receive grains that fall during transportation, crush the grains under pressure, and detect moisture in the crushed grains at the same time. It is configured to be rotationally driven. Said dry transfer gutter 1
The upper plate communicating with the drying discharge cylinder 47 at the starting end of the drying discharge tube 47 is provided with a drop opening/closing valve 49, and is configured to be opened and closed by forward and reverse rotation of a drop opening/closing motor 50.

Supply ports for supplying the transferred grains to the cooling storage chamber 7 and the drying storage chamber 19 are provided on the bottom plates of the central portions of the cooling transfer gutter 5 and the drying transfer gutter 16 in the longitudinal direction. ,
A cooling diffusion plate 51 and a drying diffusion plate 5 are provided below each supply port.
2. When double drying and double circulation cooling are performed, the bottom plate 13 and the supply opening/closing valve 43 are controlled to be open, the drop opening/closing valve 49 is controlled to be closed, and the dry storage of the hot air drying device 2 is The grains stored in the chamber 19 are supplied from the drying storage chamber 19 to the drying grain raising machine 45 through the drying chambers 22, the drying grain collecting trough 24, and the drying supply trough 48. The grains are transported to the upper part by the grain raising machine 45, and are supplied into the cooling grain raising machine 39 through the drying discharge tube 47 and the cooling supply gutter 42, and are transported to the upper part by the grain raising machine 39, It is supplied into the cooling storage chamber 7 through the cooling discharge tube 41, the cooling transfer gutter 5, and the cooling diffusion plate 51, and from the cooling storage chamber 7, the cooling chambers 10 and the cooling diffusion chamber 7 are supplied. Double drying and double circulation cooling are carried out by circulating through both the cooling device 1 and the hot air drying device 2, in which circulation is carried out through the cold collection gutter 12 and the respective supply ports 17 to the drying storage chamber 19. The structure is such that it will be carried out.

When single circulation cooling is performed, the bottom plate 13, the supply on-off valve 43 and the drop on-off valve 4
9 is controlled in a closed state, and the grains stored in the cooling storage chamber 7 of the cooling device 4 are transferred from the cooling storage chamber 7 to the cooling chambers 10 and the cooling collecting trough 12. , the cooling supply gutter 4
2 into the air-cooling grain raising machine 39, and is conveyed to the upper part by this air-cooling raising machine 49, and passes through the air-cooling dumping tube 41, the air-cooling transfer gutter 5, and the air-cooling spreading plate 51. The configuration is such that single circulation cooling is performed by circulating only the cooling device 1 through which the cooling is supplied into the cooling storage chamber 7 through circulation.

When single drying is performed, the bottom plate 13 and the supply opening/closing valve 43 are controlled to be closed, the drop opening/closing valve 49 is controlled to be open, and the drying storage chamber 19 of the hot air drying device 2 is closed. The grains stored therein are configured to be single-dried by circulating only through this hot air drying device 2. The central control device 7' has a box shape, and on the surface plate of the box, each selection switch 57 for selecting each of the dryers 3, each of the dryers 3, the hulling machine 4', and the discharge/stretching machine are installed. Start switches 58 for starting and stopping the load transfer devices 5', 6', etc. for each operation of loading, single drying, double drying, discharging, and cooling, and stop switches 5 for stopping the load transfer devices 5', 6', etc.
9. Blend switch 60 to blend grains while cooling
, a moisture setting knob 61 for setting the finishing target moisture content of grains according to the operating position, a grain type setting knob 62 and a filling amount setting knob 63 for setting the hot air temperature generated from the burner 28 according to the operating position; The configuration includes a type setting knob 64 for setting the type depending on the operating position, and a mixing ratio setting knob 65 for setting the mixing ratio, and a digital display section 66 for various digital displays on the surface plate. There is.

In the central control device 7', a detection value detected by each of the weight sensors 3' and each moisture sensor 53 is stored.
- A-D converter 67 for D conversion, this A-D converter 67
An input circuit 68 into which the converted value is input, the respective switches 57, 58, 59, 60, and the setting knobs 61, 6.
Input circuit 69 into which operations 2, 63, 64, and 65 are input
, a built-in control device 72 consisting of a CPU 70 that performs arithmetic and logical operations, comparison operations, etc. on various input values input from these input circuits 68 and 69, and an output circuit 71 that receives various commands from the CPU 70 and outputs them. It is configured to do this. The setting knobs 61, 62, 63, 64, and 65 are of a rotary switch type, and a predetermined value, type, etc. are set according to the operating position.

The grain mixing control by the control device 72 of the central control device 7' is performed as follows. That is, by operating each of the selection switches 57, the operation details are input to the CPU 70, and the dryer 3 to be started is selected based on this input.
The configuration is such that dryers No. 1, No. 2, No. 3, etc. are selected, and the grain varieties to be dried in the selected dryers 3 from No. 1 to No. 3 are selected by operating the variety setting knob 64. The content of this operation is input to the CPU 70, and the first machine is set to Akita Makachi, the second machine is set to Nihonbare, and the third machine is set to Koshihikari. The weight is detected by each weight sensor 3' and inputted to the CPU 70.

By operating the start switch 58 that starts the single drying, the contents of this operation can be changed to the C
It is input to the PU 70, drying is started, grain moisture is detected by the moisture sensor 53, and drying is completed when the detected grain moisture reaches the finishing target moisture set by operating the moisture setting knob 64. It is configured to automatically stop as follows.

When blending the dried grains during the cooling operation, the mixing ratio setting knob 65 is operated for each dryer 3, so that the content of the operation can be controlled by the CPU.
70, and by this input, the mixing ratio is set such that, for example, Akita Makachi of No. 1 machine is blended with 3: Nihonbare of No. 2 machine is blended with 3: Koshihikari of No. 3 machine is blended with 4. By operating the start switch 58 that starts the cold operation, the first, second, and third dryers 3 are started, and at the same time, the stored grain input to the CPU 70 at the end of drying is Grain weight, Akita Makachi of No. 1 machine is 1000 kg, 2
Assuming that the Nihonbare of the No. 2 machine weighs 1,500 kg and the Koshihikari of the No. 3 machine weighs 2,000 kg, the mixing ratio of 3:3:4 set from these grain weights results in 1,000 kg of the 1,500 kg of the Nihon Bare of the No. 2 machine and 2,000 kg of the Koshihikari of the No. 3 machine. Of the 2,000 kg of Koshihikari, 1,333 kg was transferred to the 1,000 kg of Akitakomachi of the first machine by the above-mentioned tension transfer device 6'.
The structure is such that it is transported and supplied via the .

The amount of 3333 kg of three types of grains transferred and supplied into the No. 1 unit of the dryer 1 is transferred to the cooling device 1 and the hot air drying device 2 at predetermined time intervals set and stored in the CPU 70. Double circulation cooling, which circulates both the air and air, and single circulation cooling, which circulates only within the cooling device 1, are performed alternately. The grains are mixed to form a blended grain.

[0022] Also, 500 kg of Nihonbare remained in the second unit of the dryer 3 and 667 kg of Koshihikari remained in the third unit.
kg is supplied from the hot air drying device 2 of each dryer 3 into each of the cooling devices 1, and left to cool in the cooling device 1. In addition, the control device 72
has the following functions: That is, the operation of the moisture setting knob 64 is input to the CPU 70, the finishing target moisture is set by this input, the grain moisture detected by the moisture sensor 53 is also input to the CPU 70, and the detected grain moisture and The grain moisture content is compared with the finishing target moisture content, and when the detected grain moisture content reaches the finishing target moisture content, the dryer 3 is automatically stopped and the drying of the grains is stopped. Further, the set hot air temperature and the detected hot air temperature are compared, and if they are different, the combustion fuel is controlled to increase or decrease so that the temperature becomes the same as the set hot air temperature.

The operation of the above embodiment will be explained below. When single-drying is performed in each of the grain dryers 3 and the dried grains that have been dried are mixed while being left to cool to form a blended grain, the central controller 7' performs blending. By operating the selection switch 57 that selects the dryer 3 that has dried the grains, operating the mixing ratio setting knob 65 to a predetermined position, and operating the blend switch 60 and the start switch 58 that starts the cooling operation. The predetermined dryer 3 that has dried the grains to be blended is started, and the dried different types of grains are transferred and supplied into the predetermined dryer 3 according to the mixing ratio.

The dryer 3 to which the grains of different varieties to be blended are transferred and supplied is started, and the grains stored in the dryer 3 are transferred to the cooling device 1 and the hot air drying device 2 of the dryer 3. A double circulation cooling system that circulates through both of the cooling systems 1 and a single circulation system that circulates only through the cooling system 1 are alternately repeated at predetermined time intervals. The grains are mixed during downstream circulation while being allowed to cool.

The remaining grains remaining in each of the dryers 3 are supplied to the cooling device 1, where they are allowed to stand still and cool.

[Brief explanation of drawings]

The figure shows one embodiment of the invention.

[Figure 1] Block diagram

[Figure 2] Action diagram

[Figure 3] Configuration diagram of grain processing equipment

[Figure 4] Partially cutaway overall side view of the grain dryer

[Figure 5]
A-A sectional view in Figure 4

[Figure 6] Enlarged front view of central control unit

[Explanation of symbols]

1 Cooling device 2 Hot air drying equipment

Claims (1)

[Claims] 1. In a plurality of grain driers comprising a cooling device 1 for cooling grains and a hot air drying device 2 for drying the grains with hot air, the dried grains are dried by the hot air drying device 2. When mixing dried grains of different varieties to make blended rice,
Double drying, in which dried grains of different types are supplied from another dryer and circulated through both the cooling device 1 and the hot air drying device 2; and drying, in which only the hot air drying device 2 is circulated. An operation control method characterized in that blending is performed within a cooling time in which single drying and cooling are alternately repeated at predetermined time intervals.