JPH04313681A - Operation control system for grain processing device - Google Patents

Abstract

PURPOSE:To obtain the moisture for unpolished rice with accuracy by installing a moisture sensor which detects the moisture of unpolished rice and returning the rice to a dryer if said detected moisture exceeds a target final moisture so as to dry said unpolished rice. CONSTITUTION:Unhulled rice in a grain dryer 1 is exposed to hot air and dried by operating each selection switch 34 of a central control room. A part of the unhulled rice is detected by a moisture sensor 5. When the detected moisture of the unhulled rice reaches a target moisture, it is discharged from the dryer 1 to a discharge transfer device 2. It is fed to an unhulled rice storage tank 3 by way of a discharge hopper 11 and a grain lift 10. Then, it is fed to a rice huller 4 from the unhulled rice storage tank 3 and sorted into chaffs and unpolished rice. The unpolished rice is discharge into an unpolished rice storage tank 6. The moisture of the unpolished rice is partially detected by the moisture sensor 5. When the detected moisture exceeds a target and final moisture, the rice is returned to t he dryer 1 where drying operation takes pace. When the moisture of unpolishing rice detected by the moisture sensor 5 has reached the finishing target value, the dryer is halted by automatic control by means of a control device for the central control device.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control system for grain processing equipment.

0002

[Prior art] Conventionally, while drying the rice grains using multiple grain dryers, the moisture content of the rice grains was detected by a moisture sensor, and drying was completed when the detected moisture content of the rice grains reached the finishing target moisture content. The dried rice grains discharged from this dryer one after another are transferred and discharged to a rice grain storage tank that stores the rice grains by a discharge transfer device, and then a huller is used to remove the rice grains from this rice grain storage tank. This was an operation control system in which the rice was supplied to the huller, where it was hulled by the huller, separated into chaff and brown rice, and then separately discharged outside the machine.

0003

[Problems to be Solved by the Invention] For example, the rice grains stored in each grain dryer are exposed to hot air and dried while being circulated within the dryer, and the rice grains are detected by a moisture sensor. When the moisture content of the paddy grains is detected and the detected paddy grain moisture content reaches the finishing target moisture content, drying is completed, and the dried paddy grains are sequentially discharged from this dryer to a discharge transfer device, and the paddy grains are stored in this discharge transfer device. The rice grains are transferred and discharged to a storage tank where the rice grains are removed, and then supplied from this tank to a huller that removes the rice grains. Expelled outside.

Moisture is detected in the rice grains during the above-mentioned series of operations from drying to hulling, but when detecting moisture in the rice grains, there is a difference in moisture between the rice husks and brown rice, and it is difficult to accurately determine the moisture content of the brown rice. For this reason, moisture detection is performed in the final stage of brown rice, and if the target moisture content has not been reached,
The purpose is to return brown rice to the dryer and dry the brown rice to obtain accurate brown rice moisture.

[0005]

[Means for Solving the Problems] Therefore, in the present invention, dried rice grains sequentially discharged from a plurality of grain dryers 1 are supplied to a huller 4 and the moisture content of the hulled brown rice is detected. In a grain processing apparatus provided with a moisture sensor 5, the moisture sensor 5
The operation control system is characterized in that it is controlled to automatically transfer and dry the reduced brown rice to the dryer 1 based on the brown rice moisture detected by the dryer 1.

[0006] Also, when drying the reduced brown rice by automatically transferring it to the dryer 1 based on the brown rice moisture detected by the moisture sensor 5, the hot air temperature is lowered to a predetermined temperature than when drying the paddy grains. The operation control method is characterized in that the brown rice is dried by controlling the circulation speed of the brown rice to a predetermined low speed and controlling the drying air volume to a predetermined high air volume.

[0007]

For example, while the rice grains stored in each grain dryer 1 are circulated in the dryer 1, the rice grains are exposed to hot air and dried, and some of the rice grains are dried. The moisture of the rice grains is detected by the moisture sensor 5, and when the detected moisture of the rice grains reaches the finishing target moisture content, the drying of the rice grains is completed, and the dried rice grains are sequentially discharged from the dryer 1 to the discharge transfer device. This discharge transfer device transfers and discharges the rice grains to a rice grain storage tank that stores the rice grains, and from this rice grain storage tank, the rice grains are supplied to the huller 4, where they are hulled into rice husks and brown rice. After being sorted, the rice husks are discharged outside the machine. Further, the selected brown rice is discharged from the huller 4 to the brown rice storage tank.

[0008] When the moisture sensor 5 installed in the huller 4 detects moisture in some of the selected brown rice, and the detected brown rice moisture is higher than the finishing target moisture, the moisture in the brown rice storage tank is The brown rice is returned to the empty dryer 1, and the brown rice is dried while being circulated in the dryer 1. When the brown rice moisture detected by the moisture sensor 5 reaches the finishing target moisture, the brown rice is returned to the empty dryer 1. Drying of brown rice is stopped by automatic stop control of the dryer 1.

[0009] In addition, when drying this brown rice, the hot air temperature is controlled to a predetermined lower temperature than when drying paddy grains, the circulation speed of the grains is controlled to a predetermined low speed, and the drying air volume is controlled to a predetermined high air volume. Brown rice is dried in a controlled manner.

0010

Effects of the Invention According to the present invention, the moisture of brown rice hulled by the huller 4 is detected by the moisture sensor 5, and when the detected brown rice moisture is higher than the finishing target moisture, the grain dryer 1 By reducing the brown rice to brown rice and drying it, accurate brown rice moisture can be obtained, and by drying brown rice, combustion energy can be used efficiently.

[0011] Also, when drying this brown rice, the incidence of splitting may be higher than when drying paddy grains, and the number of damaged grains may increase. From then on, the hot air temperature is controlled to a low temperature, the circulation speed is controlled to a low speed, and the drying air volume is controlled to a large air volume to reduce the incidence of the above-mentioned shell splitting. It was also possible to prevent the generation of damaged grains.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The illustrated example shows a rice grain storage tank 3 that stores rice grains on either side of which a plurality of grain dryers 1, for example, four grain dryers 1, are installed to dry rice grains, and a huller that removes the rice grains. A grain hoisting machine 8 is provided with a grain hoist 4, a stake hoist 7 is provided at the bottom for receiving paddy grains on the other side, and a bucket conveyor is provided inside.
At the rear side of each dryer 1, there is installed a stake transfer device 9 rotatably equipped with a stake conveyor or the like for receiving the paddy grains supplied from the stake raiser 8. 9, the rice grains are transferred and supplied to each dryer 1.

[0013] On the rear side of each dryer 1, each dryer 1
A discharge transfer device 2 rotatably equipped with a discharge conveyor or the like for receiving dried rice grains discharged from the rice grain raising machine 10 is provided. 11, and the paddy grains conveyed to the upper part by a bucket conveyor provided in this discharge hoisting machine 10 are discharged into the paddy grain storage tank 3 and stored therein. The rice grains in the grain storage tank 3 are supplied to the huller 4, and the brown rice hulled by the huller 4 is sent to the brown rice hopper 13 provided at the bottom of the brown rice grain raising machine 12. The brown rice transported to the upper part by a bucket conveyor provided in the brown rice grain raising machine 12 is discharged into the brown rice storage tank 6, and each of these dryers 1, hullers 4. This figure shows a grain processing device 15 that includes a central control device 14 that starts operation of each grain raising machine 8, 10, 12, each storage tank 3, 6, etc.

The dryer 1 includes a storage chamber for storing rice grains from the upper part, a drying chamber for drying the rice grains, and a delivery valve 17 rotatably supported in the lower part of this drying chamber for delivering and flowing down the rice grains. It is configured to be rotationally driven by a variable speed valve motor 16, and a ventilation chamber and a ventilation chamber are provided on the left and right sides of the drying chamber, and a grain collection gutter equipped with a transfer spiral is provided below the drying chamber. A transfer gutter 18 equipped with a transfer spiral and a ceiling plate are provided on the upper side of the storage chamber, and a supply port for supplying paddy grains to be transferred is provided on the bottom plate at the center of the transfer gutter 18 in the front-rear direction. A diffusion plate is provided to uniformly diffuse and supply the rice grains into the storage chamber.

A discharge funnel 19 for discharging the rice grains is provided on the bottom plate of the starting end of the transfer gutter 18, and an on-off valve 21 that can be opened and closed by an on-off motor 20 that rotates in forward and reverse directions is provided in the discharge funnel 19. When the valve 21 is open, the rice grains are discharged from the discharge funnel 19 through the discharge tube 22 to the discharge transfer device 2, and when the valve 21 is closed, the rice grains are transferred by the transfer spiral in the transfer trough 18. A diffusion plate is used to uniformly diffuse and supply the water into the storage chamber.

A hot air device 23 communicating with the ventilation chamber is provided on the front wall of the dryer 1, and an air exhaust device 24 is provided on the rear wall.
The hot air from the hot air device 23 is configured to pass through the air blowing chamber to the drying chamber, pass through the air exhaust chamber, and be sucked and exhausted by the air exhaust device 24. Device 2
Reference numeral 4 denotes a configuration that is rotationally driven by a speed-changing exhaust air motor 25, and the drying air volume is controlled to increase or decrease by changing speed rotation of this air exhaust motor 25.

On the outside of the rear wall plate of the dryer 1, there is provided a circulating grain hoist 26 equipped with a belt with a bucket conveyor, and the upper part is provided with a dispensing tube 27 which communicates with the starting end of the transfer gutter 18, and the lower part The structure is such that a supply gutter 28 is provided and communicated with the terminal end of the grain collection gutter. The circulation grain raising machine 26 is provided with a moisture sensor 5 that receives the rice grains that fall while being transported to the upper part by the bucket conveyor, crushes the rice grains under pressure, and simultaneously detects the moisture content of the crushed rice grains. It is structured as follows.

A switching valve 29 that can be opened and closed is provided in the rice grain storage tank 3, and this switching valve 29 is configured to be opened and closed by a switching motor 30 that rotates in forward and reverse directions.
The inner upper part is equipped with a full amount sensor that detects the full amount of paddy grains, and the lower part is equipped with a paddy grain sensor that detects the presence or absence of paddy grains. The grains are supplied from the grain storage tank 3 to the huller 4 through the supply cylinder 31.

The huller 4 receives rice grains flowing down from the rice grain storage tank 3 through the supply tube 31, and is hulled by the huller rolls in the huller 4 to separate rice husks and brown rice. The structure is such that the rice is sorted by a sorting device and the rice husks are discharged outside the machine, and the brown rice is conveyed to the upper part by a bucket conveyor installed in the huller and grain raising machine 48, and is discharged into the brown rice hopper 13. The brown rice is transported to the upper part by a grain raising machine 12, and is discharged into the brown rice storage tank 6 through a brown rice flow tube.

The hulling machine 48 of the hulling machine 4 includes:
The structure includes the moisture sensor 5 that receives the brown rice that falls while being conveyed to the upper part by the bucket conveyor in the hulling grain raising machine 48, crushes the brown rice under pressure, and detects the moisture content of the crushed brown rice at the same time. There is. In the brown rice storage tank 6, brown rice is discharged from the brown rice storage tank 6 through the brown rice discharge tube to the outside of the machine, or from the brown rice storage tank 6 through the brown rice discharge tube to the transfer device 9. A rotatable brown rice switching valve 32 for switching between discharge and discharge is provided, and this brown rice switching valve 32
is configured to be rotated by a brown rice switching motor 33 that rotates in forward and reverse directions, and when the brown rice is discharged to the tension transfer device 9, it is supplied to each of the dryers 1. The structure includes a full amount sensor for detecting the full amount of brown rice, and a brown rice sensor for detecting the presence or absence of brown rice at the bottom.

The central control device 14 includes, on a surface plate, each selection switch 34 for selecting and setting each dryer 1, each starting switch 35 for starting each of the operations of loading, drying and discharging, and the aforementioned husking switch. each starting switch 35 for starting the machine 4, the rice grain storage tank 3, and the brown rice storage tank 6;
A stop switch 36 for stopping operation, a moisture setting knob 37 for setting the finishing target moisture of each dryer 1, a grain type setting knob 38 for setting the hot air temperature generated from the hot air device 23 of each dryer 1, It is configured with a setting knob 39 for setting the loading amount, and a digital display section 40 that digitally displays grain moisture, hot air temperature, etc. After operating the selection switch 34 to set the dryer 1, the respective switches 35 , 36 and the respective setting knobs 37, 38, and 39, these operations are input.

[0022] Also, each switch 34, 35, 36 is provided inside.
and an input circuit 41 into which the operation of each setting knob 37, 38, 39 is input, the detection value detected by each moisture sensor 5, and the detection value detected by each hot air temperature sensor 42 of each dryer 1. - an A-D converter 43 that performs D conversion; an input circuit 44 to which the converted value converted by the A-D converter 43 is input;
A control device 47 is built in, which includes a CPU 45 that performs arithmetic and logical operations, comparison operations, etc. on various input values input from these input circuits 41 and 44, an output circuit 46 that receives various commands from the CPU 45, and outputs them. It is the composition. Each of the setting knobs 37, 38, and 39 is of a rotary switch type, and a predetermined value, type, etc. are set according to the operating position.

The grain moisture detection control of the dryer 1 by the control device 47 is performed as follows. That is, the content of the operation of the moisture setting knob 37 is controlled by the CPU 45.
The target moisture content (M) of brown rice is determined by this input.
L) is set. On the other hand, the rice grain moisture (MS) detected by the moisture sensor 5 of the dryer 1 is also input to the CPU 45, and the input detected rice grain moisture (MS) and the set finishing target moisture (ML) are compared, When it is detected that the detected rice grain moisture has reached the finishing target moisture (ML), each operating part of the dryer 1 is automatically stopped and the rice grain drying is completed.

The grain moisture detection control of the huller 4 is performed as follows. That is, the finishing target moisture (ML) that was set at the time of drying the rice grains and inputted to the CPU 45 is used as is. On the other hand, the hulling machine 4 starts hulling the rice grains (step 1), and the moisture sensor 5 of the hulling machine 4 starts detecting the moisture content of brown rice (step 2).
), the detected brown rice moisture (ME) is input to the CPU 45, the input set finishing target moisture (ML) and the detected brown rice moisture (ME) are compared, and the detected brown rice moisture (ME) is determined as the set finishing target moisture (ME). ML) or higher (step 3), hulling is continued (step 4),
The hulled brown rice is discharged to the brown rice storage tank 6 (step 5), and the paddy grain sensor in the hulling storage tank 3 detects the presence or absence of paddy grains, and if there is no paddy grains, it is detected and input. Then, it is detected that the hulling has been completed (step 6), and when it is detected and inputted, the hulling is continued. When the moisture content is equal to or higher than the set finishing target moisture (ML), the brown rice starts to be returned to the dryer 1 (step 7), and the brown rice sensor in the brown rice storage tank 6 detects the presence or absence of brown rice, and detects that there is no brown rice. When this is inputted, it is detected that the restoration of brown rice to the dryer 1 has been completed (step 8), and when it is detected and inputted, the charging is continued. When drying brown rice, the hot air temperature is controlled to a predetermined temperature lower than when drying paddy grains, which is set and stored in the CPU 45 (step 9), and the circulation speed is controlled to a lower temperature than when drying paddy grains. (step 10), and the drying air volume is controlled to be lower than the predetermined speed stored in the CPU 4 (step 10).
The predetermined air volume is controlled to a large air volume set to 5 and stored (step 11), and drying of brown rice is started (step 12).
When it is detected that the brown rice moisture (ME) has reached the set finishing target moisture (ML) (step 13), if it is not detected that the moisture content has been reached, drying continues, and when it is detected that the moisture content has been reached,
Each operating part of the dryer 1 is automatically stopped and brown rice drying is completed (step 14).

When the detected brown rice moisture (ME) is detected to be less than the set finishing target moisture (ML), hulling is continued (step 15), and the hulled brown rice is discharged to the brown rice storage tank 6. (Step 16), brown rice is stored in the brown rice storage tank 6 (Step 17).
). In addition, the control device 47 has the following functions. That is, the set hot air temperature and the hot air temperature detected by the hot air temperature sensor 42 are compared, and if they are different, the combustion fuel is controlled to be increased or decreased so that it becomes the same as the set hot air temperature.

The operation of the above embodiment will be explained below. When drying the paddy grains loaded into the grain dryer 1, operate each selection switch 34 of the central controller 14, move each setting knob 37, 38, 39 to a predetermined position, and dry the rice grains. By operating the start switch 35 to start the work, each part of the dryer 1, the hot air device 23, and the dryer 1
The moisture sensor 5 and the like start, and hot air is generated from the hot air device 23.

[0027] This hot air passes through the drying chamber and is discharged from the air exhaust device 24.
By suctioning and exhausting the air, the flowing rice grains are fed out from the storage chamber into the drying chamber by the rotation of the feeding valve 17, and the paddy grains flowing down are exposed to this hot air and dried. When the sensor 5 detects the same rice grain moisture as the finishing target moisture set by operating the moisture setting knob 37, the controller 47 of the central controller 14 automatically controls the dryer 1.
The drying of the rice grains is stopped automatically.

When discharging the dried rice grains, the dryer 1, the discharging transfer device 2 and the discharging grain raising machine 10 are operated by operating the start switch 35 of the central control device 14 that starts the discharging operation. etc., the dried rice grains are discharged from the dryer 1 to the discharge transfer device 2, transferred by the discharge transfer device 2 and discharged into the discharge hopper 11, and then transferred to the bucket of the discharge grain hoist 10. The rice grains are transported to the upper part by a conveyor and discharged into the rice grain storage tank 3 through the discharge tube 22.

When carrying out hulling work on dried rice grains, the hulling machine 4 and the rice grain storage tank 3 of the central control device 14
These hulling machines 4 are started by operating the start switch 35 that starts the rice grain storage tank 3.
9 is opened, the rice grains in the rice grain storage tank 3 are supplied to the huller 4 through the supply tube 31, where they are hulled, separated into brown rice and rice husks, and the rice husks are taken out of the machine. After being discharged, the brown rice is conveyed to the upper part by the bucket conveyor of the huller grain raising machine 48, discharged into the brown rice hopper 13, conveyed to the upper part by the bucket conveyor of the brown rice grain raising machine 12, and passed through the brown rice flow tube to the brown rice storage tank. It is discharged into 6. In addition, some of the brown rice that falls while being conveyed to the upper part of the bucket conveyor of the hulling machine 48 is
The moisture sensor 5 of the huller 4 detects brown rice moisture.

[0030] When the detected brown rice moisture is found to be higher than the finishing target moisture set at the time of drying the paddy grains,
The brown rice switching valve 32 is opened, and the brown rice in the brown rice storage tank 6 is discharged to the tension transfer device 9 through the brown rice discharge tube.
The dryer 1 is transferred by this tensioning transfer device 9 and is tensioned into the dryer 1 which is in an empty state and is started. When drying brown rice, by operating the start switch 35 of the central controller 14 that starts the drying operation, each part of the dryer 1 and the hot air are activated in the same way as when drying the rice grains. The device 23 and the moisture sensor 5 of this dryer 1 are started, and hot air is generated from the hot air device 23.

When drying brown rice, the temperature of the hot air is controlled to a predetermined lower temperature than when drying paddy grains, and the amount of drying air sucked and discharged by the air exhaust device 24 is controlled to a predetermined amount of air. The circulation speed of feeding and circulating by the feeding valve 17 is controlled to a predetermined low speed, and this hot air passes through the drying chamber and is sucked and exhausted by the air exhaust device 24, thereby causing the hot air to flow from the storage chamber into the drying chamber. The brown rice being fed out and flowing down by the rotation of the feeding valve 17 is circulated and dried by being exposed to this hot air, and the finished product is set by the moisture sensor 5 by operating the moisture setting knob 37. When the moisture content of brown rice that is the same as the target moisture content is detected, the control device 47 of the central control device 14 automatically controls the dryer 1 to stop drying the brown rice.

[Brief explanation of drawings]

The figure shows one embodiment of the invention.

[Figure 1] System configuration diagram of grain processing equipment

[Figure 2] Block diagram

[Figure 3] Flowchart

[Figure 4] Enlarged side view of grain dryer with partial cutaway

[Figure 5]
Enlarged side view of the huller

[Explanation of symbols]

1 Grain dryer 4. Husking machine 5 Moisture sensor

Claims (2)

[Claims] 1. A grain processing device equipped with a moisture sensor 5 for detecting moisture in brown rice that has been hulled by supplying dried rice grains sequentially discharged from a plurality of grain dryers 1 to a huller 4. An operation control method characterized in that the brown rice that has been reduced by being automatically transferred to the dryer 1 is controlled to be dried based on the brown rice moisture detected by the moisture sensor 5. 2. A grain processing device equipped with a moisture sensor 5 for detecting moisture in brown rice that has been hulled by supplying dried rice grains sequentially discharged from a plurality of grain dryers 1 to a huller 4. When drying the reduced brown rice by automatically transferring it to the dryer 1 based on the brown rice moisture detected by the moisture sensor 5, the hot air temperature is controlled to a predetermined lower temperature than when drying the paddy grains. , the circulation speed of the brown rice is controlled to a predetermined low speed,
The operation control method is characterized in that the brown rice is dried by controlling the drying air volume to a predetermined large air volume.