JPH10151418A - Control method and apparatus for specific gravity sorter and specific gravity sorter using said specific gravity sorter - Google Patents

Abstract

(57) [Summary] [Purpose] When sorting waste rice with different composition ratios using a specific gravity separator, a specific gravity separator that automatically controls the supply flow rate of the specific gravity separator, the air flow rate, and the inclination angle of the separator plate is provided. provide. The present invention provides a swing sorter frame 3 in which sorting plates 9 and 10 are provided in a plurality of stages in an inclined manner so as to be swingable, and the swing sorter frame 3
A blower fan 34 that blows air from below to above, a flow rate adjusting unit 35 that adjusts the supply amount of the sorting target to the sorting plates 9 and 10, and an air volume adjusting unit 29 that adjusts the air volume of the blowing fan 34. In the specific gravity sorter 1 provided with the angle adjusting means 16 for adjusting the swing sorter frame to an appropriate inclination angle and the driving devices 37, 30, and 17 for driving the respective adjusters, the specific gravity sorter 1 A flow rate measuring device 38 capable of measuring the weight of the sorted material is provided in the sorted material supply flow path 36 or the sorted material discharge flow path 20, and the flow rate measuring device 38 and the driving devices 37, 30, and 17 are controlled by a control device. Connect via 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a specific gravity sorter for cereals, which sorts waste rice (so-called specific rice) remaining after sorting harvested brown rice into upper rice, central rice and lower rice. The present invention relates to a device and a specific gravity sorting system using the specific gravity sorter.

[0002]

2. Description of the Related Art Since scrap rice is brown rice that has passed through the width of a grain sorter among the raw brown rice that has been harvested, it is classified according to the composition ratio of sized rice, blue rice, etc. contained in the raw brown rice at the time of harvest. The composition ratio of the later scrap rice is also different. The composition ratio of the raw brown rice is
Generally, it differs every time depending on the field, the variety, and the year of harvest.

[0003]

Now, specific rice consisting of scrap rice has already been sorted into upper, middle and lower rice by a specific gravity sorter according to the grain size. The rice scraps obtained from the above have various composition ratios and are not constant. If you try to collect such scrap rice with different composition ratios and sort it with a specific gravity sorter at a constant rate, the sorting plate inclination angle of the specific gravity sorter will change over time and every time the composition ratio changes for each lot. It is necessary to adjust the air volume and the like, and this adjustment is very troublesome. In particular, when the composition ratio changes, the bulk density (so-called bulk density)
And the flow rate of the raw material on the separation plate and the wind resistance will also change, and the supply flow rate of the specific gravity separator, the air flow rate, and the inclination angle of the separation plate will be manually adjusted each time the raw material production area or variety changes. I needed to.

[0004] In view of the above problems, the present invention provides a control method for sorting crushed rice having a different composition ratio by a specific gravity sorter,
It is a technical object of the present invention to provide a specific gravity sorter that automatically controls a supply flow rate, a selection air volume, and an inclination angle of a separation plate of the specific gravity sorter by the control method, and a specific gravity sorter system using the specific gravity sorter.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a blower fan in which a sorting plate provided with a plurality of sorting plates is tilted and swingable, and the ventilation fan blows upward from below. The technical means of measuring the specific gravity of the material to be sorted supplied to the specific gravity separator and controlling the specific gravity selector in accordance with the change in the specific gravity is taken in the specific gravity separator provided with.

[0006] Further, the specific gravity separator may be controlled by measuring the specific gravity of the sorted material discharged and sorted by the specific gravity separator according to the change in the specific gravity.

Further, it is preferable to control the supply amount of the sorting object, the blowing amount of the blower fan, and the inclination angle of the sorting machine frame in accordance with the change in the bulk density.

[0008] Then, it is preferable that the water content of the selected material is detected, and the inclination angle of the sorting machine frame, the supply amount of the selected material, and the blowing amount of the blower fan are controlled in accordance with the change in the water content.

In addition, a plurality of the specific gravity sorters are connected to each other, and a flow rate measuring device is provided at an appropriate place of the plurality of specific gravity sorters, and the waste rice having a different composition ratio based on a detection value of the flow rate sorter. What is necessary is just to build a specific gravity sorting system that sorts the rice into three types: upper, central and lower.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific gravity sorter of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a partially cutaway side view of a grain specific gravity sorter of the present invention and a block diagram for controlling the specific gravity sorter. The specific gravity sorter 1 is provided with an oscillating sorter frame 3 in which the discharge side of the grains having a low specific gravity is supported at a low position and the discharge side of the grains having a high specific gravity is supported at a high position. An exhaust chamber 4 provided at the upper part of the moving sorter frame 3, an air path 6 connected to the exhaust chamber 4 and connected to the suction fan 5, and a curved upper surface on the upper side of the air path 6. Grain supply chute 7
And a secondary sorting unit 8 disposed below the swinging sorter frame 3.

An upper sorting plate 9 having a plurality of types of mesh widths is disposed on the swing sorting machine frame 3 at an angle, and a lower sorting plate made of a woven mesh is provided below the upper sorting plate 9. 10 are arranged so as to be inclined in multiple stages, and each is provided integrally. As shown in FIG. 2, the shape of the upper selection plate 9 is, for example, a woven net portion 11, an oval long hole net portion 12 and a round hole net portion 13 continuously from the grain supply side of the upper selection plate 9. What is joined is good,
The shape of the lower sorting plate 10 is preferably formed in a woven net over the entire plate surface. The swing sorting machine frame 3 is provided with a window 14 for monitoring the sorting plates 9 and 10 on the side surface, the lower tilt side is pivotally supported on the machine base 2 via a joint 15, and the higher tilt side is a height adjusting device. It is pivotally connected to the machine base 2 via 16. A drive device 17 such as a gear motor is attached to the height adjustment device 16 to automatically adjust the inclination angle of the swing sorter frame 3. Also, on the lower tilt side of the swing sorter frame 3,
A vibration motor 18 for swinging the entire specific gravity separator 1 is provided, and vibrates obliquely up and down as shown by an arrow W in the figure.

The upper sorting plate 9 arranged on the swinging sorting machine frame 3 in an inclined manner has a lower inclined side serving as a lower rice discharging section 19 and connected to a lower rice discharging gutter 20, and a higher inclined side has a grain lowering side. Grain supply unit 21
Then, it communicates with the grain supply chute 7. The lower sorting plate 10 below the upper sorting plate 9 has a lower inclined side serving as a central American discharge section 22 and communicates with a central American discharge gutter 23, and a higher inclined side 24.
Communicates with the secondary sorting section 8. The secondary sorting unit 8 disposed below the swinging sorting machine frame 3 is provided with an upper rice discharge gutter 2 on its lower slope side.
5 and the foreign matter discharge gutter 26 is connected to the higher inclined side.

An exhaust chamber 4 provided above the swinging sorter frame 3 is formed by a wind tunnel 27 in the shape of a truncated quadrangular pyramid (frustum of quadrangular pyramid). A window 28 for monitoring the situation is provided. An air flow control valve 29 is provided on one upper side of the exhaust chamber 4 via the air passage 6. The air volume adjusting valve 29 has a driving device 30 such as a gear motor.
Is provided, so that the opening and closing of the air volume control valve 29 can be automatically adjusted. Reference numeral 31 denotes the suction fan 5 and the air volume control valve 2
9 is a connecting pipe.

The secondary sorting section 8 is provided with a fan case 32 below the sorting plate 10, and a pipe 33 is attached to the fan case 32.
Is connected to the blowing fan 34 that blows air from below the sorting plate.

Above the air passage 6, a curved grain supply chute 7 is provided.
It is connected with substantially the same width as the body so that the grains spread over the entire surface of the upper selection plate 9. Above the grain supply chute 7, a grain supply cylinder 36 provided with a flow rate control valve 35 is provided.
A drive device 3 such as a gear motor is provided in the flow rate control valve 35.
7 is provided so that the opening and closing of the flow control valve 35 can be automatically adjusted.

In front of the grain supply cylinder 36, an electromagnetic flow measuring device 3 for detecting the flow rate, bulk weight and moisture of the raw grain is provided.
8 are provided. The detection signal from the electromagnetic flow measuring device 38 is connected to an arithmetic and control unit 40 via a lead wire 39, and the arithmetic and control unit 40 outputs the leads 41, 42 and 4.
3, and are connected to the respective driving devices 30, 37, 17 respectively.

Next, the configuration of the electromagnetic flow measuring device 38 will be described in detail with reference to FIG. Electromagnetic flow measurement device 38
Is provided before the grain supply cylinder 36, and the grain supply cylinder 36
Is connected to the grain supply cylinder 36 by a load cell type weight detector 45 fixed to the machine base 2 in a non-contact state. ing. A capacitance detector 46 is provided on the inner surface of the flow pipe 44, and a level meter 47 is provided at an arbitrary position of the flow pipe 44. Code 5
Reference numeral 6 denotes a moisture sensor provided in the flow path of the flow path pipe 44, and a moisture sensor (not shown) using a roll electrode may be provided instead of the moisture sensor.

An opening / closing device 51 composed of a rotary opening / closing plate 49 and a cylinder 50 is provided at a discharge port 48 below the flow pipe 44, and a charging cylinder 52 above the flow pipe 44 is
An opening / closing device 55 constituted by a slide opening / closing plate 53 and a cylinder 54 is provided.
Is operated to shut off the flow path. The cylinders 50 and 54 are each air-pipe and are electrically moved in and out by a solenoid valve (not shown) and the like.

Next, the electrical connection of the electromagnetic flow measuring device 38 will be described. In FIG. 3, the capacitance detector 46, the load cell type weight detector 45, and the moisture sensor 56 are connected to the arithmetic and control unit 40 via an appropriate amplifier (not shown) or the like, as shown in FIG. When a plurality of electromagnetic flow measuring devices 38 are connected to the arithmetic and control unit 40 in some cases, they may be connected in parallel with a collective line or the like. Arithmetic and control unit 40
The arithmetic and control unit 40 includes an arithmetic circuit centered on a CPU, storage devices such as various memories, and interfaces (not shown) such as a communication function and an AD conversion function. , 53 are interlocked, and the measurement of the bulk weight is continuously performed.

Next, the operation of the above configuration will be described with reference to the flowchart of FIG. In FIG. 4, steps 101 to 105 are a flow for performing an initial setting so that the specific gravity sorter 1 has a reference processing capacity, and a flow after the step 106 is a flow for performing a feedforward control by the electromagnetic flow measuring device 38. is there.

Step 101 is an initial setting. For example, the flow rate control valve 35 is controlled so that the raw material supply rate is 5 ton / h at a constant flow rate, and the suction flow rate is controlled at a constant flow rate of 100 m3 / min. The height adjusting device 16 is controlled so that the sorting plate angle becomes an appropriate sorting angle. These flow control valve 35, air flow control valve 29 and height control device 16 are connected to drive devices 37, 3 respectively.
It can be easily controlled by 0 and 17. And step 1
In 02, the air flow control valve 29 is adjusted to the start air flow,
In step 103, the discharge of refined products is switched to the circulation side, and in step 104, raw material grains are introduced. The raw material grains adjusted to a constant flow rate of 5 ton / h by the flow rate control valve 35 are vibrated and diffused in the width direction of the grain supply chute 7 and flow down, and are uniformly supplied to the grain supply unit 21 with the same width as the machine body. Is done. In step 105, it is determined whether or not the raw material grains reaching the grain supply unit 21 have been uniformly diffused in the width direction of the upper selection plate 9. That is, when the swinging sorter frame 3 is swung by the vibration motor 18 and the timer is operated, and when a predetermined time has elapsed and the time has elapsed, it is determined that the raw material grains have been diffused in layers on the upper sorting plate 9. I do. Instead of this timer, it may be determined whether or not the raw material grains have been diffused in a layered manner by using a sorting plate sensor.

From the next step 106, the specific gravity sorter 1
With the full-scale operation of, feedforward control by the electromagnetic flow measuring device 38 is performed. In step 106, the air volume control valve 29 is set to the standard selection air volume. In step 107, the circulation of the refined product is switched to the discharge side, and the refined product is discharged. In step 108, the flow rate measurement is determined. In the flow rate measurement determination in step 108, it is determined whether the initially set flow rate (for example, 5 ton / h) has increased or decreased.

The determination of the flow rate measurement in step 108 will be described in detail with reference to FIG. The flow measurement is performed using an electromagnetic flow measurement device 38.
Measures the output C0 of the capacitance detector 46 in a state where nothing flows through the flow path pipe 44 and the output W0 (tare weight) of the load cell type weight detector 45 in the same state. It is stored in a storage device (not shown).

Next, a signal indicating that the charging to the flow path pipe 44 is possible is transmitted from the arithmetic and control unit 40 to the cylinders 50 and 54, and the charging is started. That is, when the upper opening / closing plate 53 is opened and the lower rotary opening / closing plate 49 closes the discharge port 48, the raw material grains gradually accumulate.
Then, the arithmetic and control unit 40 starts measuring the time Tf, and when the deposit reaches an arbitrary position, it is detected by the level meter 47 installed in the flow pipe 44. Arithmetic and control unit 4
0 detects the signal of the level meter 47, and detects the upper open / close plate 5
3 is closed, and the inflow of the raw material grains into the flow path pipe 44 is blocked. Further, the arithmetic and control unit 40 ends the measurement of the time Tf, and detects the weight Wf of the raw material grain deposited up to the level meter 47 from the load cell type weight detector 45. When the measurement is completed, the arithmetic and control unit 40 sets the cylinder 50,
The signal is output to 54 and the rotation opening / closing plate 49 and the slide opening / closing plate 53 are opened to release the cutoff, and the raw material grains start flowing through the flow path pipe 44 again. When the raw material grains start flowing through the flow path pipe 44, the arithmetic and control unit 40 obtains an accurate flow rate by converting the flow rate of the current raw material grains into a capacitance.

[0026]

(Equation 1) In Expression 1, the flow rate Sk can be obtained from the weight Wf and the charging time Tf at that time. In addition, the flow rate Sm converted by the capacitance is the flow rate Sk obtained earlier,
It is determined from the empty capacitance C0, the capacitance Ck, and the coefficient K specific to the capacitance detector 46. By the way, the calculation of the flow rate temporarily interrupts the flow path because a batch process is performed. For example, even at a flow rate of 1 ton / h, the measurement time is short (around 5 seconds).

Returning again to the flowchart of FIG. In step 109, the volume weight calculation of the raw material grains flowing into the flow path pipe 44 is performed. For example, the volume up to the position of the level meter 47 in the flow pipe 44 is a constant volume (for example, 1.0 liter).
If the weight of the raw material grains at that time is detected by the load cell type weight detector 45, the volume weight ρ (for example, the unit is [g / liter]) can be measured. Also,
The obtained volume weight ρ [g / liter] may be corrected from the empty capacitance C0, the capacitance CK, and the coefficient K. Since the crushed rice does not have a stable weight ρ and the variance of the weight ρ occurs every time the batch processing is performed, it is necessary to control the specific gravity sorter 1 according to the weight ρ and the flow rates Sk and Sm. .

In step 110, the flow rate initially set in step 101 (for example, 5 ton / h) and step 10
8. Compare the flow rates Sk and Sm calculated by 8 and
The variation of the volumetric weight ρ calculated in step 109 is examined. If the current flow rate is 5 ton / h or more and the current weight is increasing, the process proceeds to step 111. If the current flow is less than 5 ton / h and the current weight is decreasing, step 111 is performed. It reaches 112.

In step 110, the flow rate measured this time is 5 to
n / h or more, and if the bulk weight has increased from the previous
In step 111, control for decreasing the flow rate and control for increasing the air volume are performed. That is, the arithmetic and control unit 40
From the control device 40 to the drive device 37 to control the opening degree of the flow control valve 35 to be narrowed.
And the control to expand the opening of the air volume control valve 29.

In step 110, the flow rate measured this time is 5 to
If it is less than n / h and the bulk weight has decreased from the previous
In step 112, it is further determined whether the flow rate is smaller than the reference value and whether the volumetric weight is smaller than the reference value. If the flow rate and the volumetric weight are equal to or less than the reference values, the process proceeds to step 113, where control for increasing the flow rate and control for decreasing the air volume are performed. That is, from the arithmetic and control unit 40 to the drive unit 3
7 to increase the degree of opening of the flow rate control valve 35, and output from the arithmetic and control unit 40 to the drive unit 30 to control to decrease the degree of opening of the air volume control valve 29.

When the control in step 111 is completed, the process proceeds to step 114, in which the moisture of the kernel is detected. In step 115, it is determined whether or not the water content of the raw material grains is larger than the reference value. If the water content is larger than the reference value, the process proceeds to step 116. If the water content is smaller than the reference value, the process proceeds to step 117. In step 116, since the grain slips on the sorting plate due to excessive moisture, the arithmetic and control unit 40 outputs to the driving device 17 to make the inclination angle of the sorting machine frame 3 steep. In step 117, it is further determined whether or not the moisture is smaller than the reference value. If the water content is equal to or less than the reference value, the routine proceeds to step 118, where the arithmetic control unit 40 outputs to the drive unit 17 to perform control to loosen the inclination angle of the sorting machine frame 3. The above-described control of the specific gravity sorter by detecting the moisture content of the raw material grains is performed in Step 11.
Not only the control of the inclination angle of the sorter frame 3 in step 6 and step 118, but also the control of the opening of the flow rate control valve 35 and the control of the blowing amount of the blower fan may be performed. Then, when the control of the flow rate control valve 35, the air volume control valve 29, and the sorting plate inclination angle is completed, the process returns to step 108 again.

FIG. 5 is different from FIG. 1 in that the purified product discharge side of the specific gravity sorter 1, that is, the discharge gutters of the lower rice discharge gutter 20, the central rice discharge gutter 23, and the upper rice discharge gutter 25 are attached to the electromagnetic flow measuring device. 38 are provided in this embodiment. The detection signals from the electromagnetic flow rate measuring devices 38 are transmitted to the arithmetic and control unit 40, and the arithmetic and control unit 40 sends the leads 41, 42, 4
Each of the driving devices 30, 37, and 17 is communicated with the corresponding one of the driving devices 3 through 37. In the case of this embodiment, the flow rate, bulk weight and moisture on the purified product discharge side are measured, and the flow rate control valve 35 of the specific gravity separator 1
This is for performing feedback control of the air volume adjusting valve 29 and the height adjusting device 16. The operation of this embodiment is almost the same as described above, and the description is omitted.

FIG. 6 shows a state in which a plurality of specific gravity sorters 1 as shown in FIG.
Provision of electromagnetic flow measuring devices 38A to 38D at appropriate places in
It is a block diagram which shows the specific gravity sorting system for cereals which sorts out the scrap rice with a different composition ratio into three types, upper rice, central rice, and lower rice. In FIG. 6, it can be seen that the opening degree of the damper of each of the specific gravity sorters 1 </ b> A to 1 </ b> C is closer to the full opening as it goes to the right. It shows that.

FIG. 7 is a block diagram for explaining the electrical connection of the grain specific gravity sorting system shown in FIG. The electromagnetic flow measuring devices 38A to 38D are connected to the arithmetic and control unit 40 in parallel or in series via an appropriate communication line (for example, RS232C). The air volume adjusting valves 29A to 29C of each specific gravity separator are provided with driving devices 30A to 30C for electrically controlling the opening and closing of the valves.
30C are connected to the arithmetic and control unit 40 in parallel or in series via an interface 57. Each driving device 30A ~
30C are manual / automatic changeover switches 58A-58 so that the air volume adjusting valves 29A-29C can be adjusted manually.
You may contact the arithmetic and control unit 40 via C.

FIG. 8 is a flowchart of the cereal specific gravity sorting system shown in FIG. The operation of the specific gravity selection system will be described with reference to FIG.

First, the raw material grains supplied to the specific gravity sorting system are supplied to the electromagnetic flow measuring device 38A, and the flow rate and the bulk density of the raw material grains are measured. Then, for example, raw material grains having a flow rate of 10 (ton / h) and a volume weight of 741 (g / liter) are measured, and the raw material grains are introduced into the specific gravity sorter 1A (flow path 59). In the specific gravity separator 1A, the feed rate is controlled from the output value of the electromagnetic flow measuring device 38A so that the flow rate is maintained at 10 (ton / h) even if the volumetric gravity changes, and 100% of the raw material grains are supplied at a rate of 23.3%. % Of lower rice (flow path 6
0) and rice (flow path 61) other than lower rice of 76.7%. At this time, the bulk weight of the sorted rice was 685 (g /
Liters), and the bulk weight of rice other than lower rice is 762 (g / liter).

Next, the rice other than the lower rice is put into the specific gravity sorter 1B (flow path 61), and the ratio of the lower rice (flow path 62) and the ratio of 47.7% of the central rice (flow path 63) is 19.8%. 9.2% of the top rice (flow path 64). The ratio selected at this time is 9.2
% Of U.S.A. is supplied to the electromagnetic flow measurement device 38B (the flow path 64), and the flow rate and the bulk weight are measured. And, for example,
Flow rate is 2.2 (ton / h) and weight is 783 (g / liter)
It is measured as the top rice. In the specific gravity separator 1B, feedback control is performed based on the output value of the electromagnetic flow measuring device 38B so that the flow rate and the bulk weight of the upper rice do not change.

Central America, with a ratio of 47.7%, is next to the specific gravity sorter 1C.
(Flow path 63) and a 5.8% ratio of sewage rice (flow path 6)
5) and 14% ratio of upper rice (flow path 66) and 27.9% ratio of Central America (flow path 67). The ratio selected at this time
14% of the upper rice is put into the electromagnetic flow measurement device 38C (flow path 66), and the flow rate and the bulk density are measured. Then, for example, a flow rate of 1.4 (ton / h) and a volumetric weight of 768 (g / liter) of upper rice are measured. In the specific gravity separator 1C, the electromagnetic flow rate measuring device 38 is used so that the flow rate and the bulk weight of the upper rice do not change.
Feedback control is performed from the output value of C.

The flow paths 60 in the specific gravity sorters 1A to 1C,
Numerals 62 and 65 serve as drainage channels for lower rice. These channels are assembled by a channel 68 and guided to an electromagnetic flow measuring device 38D, and the final flow rate and bulk density of the lower rice are measured to determine the specific gravity. The feedback control of the sorting machines 1A to 1C is performed. Then, Central America discharged from the flow path 67 of the specific gravity sorter 1C flows into the flow path 59.
Return to. In the specific gravity sorting system for cereals according to the above-described embodiment, 100% of raw material grains can be used to remove two rice grains.
With a composition ratio of 3.2%, central rice can be extracted with a composition ratio of 27.9%, and lower rice can be extracted with a composition ratio of 48.9%. And
In such a specific gravity sorting system for cereals, it is possible to automatically and automatically sort waste rice having different composition ratios.

[0040]

As described above, according to the present invention, since the specific gravity of the material to be sorted supplied to the specific gravity separator is measured and the specific gravity selector is controlled in accordance with the change in the specific gravity, the composition It is now possible to automatically control the specific gravity sorter without the need for manpower when sorting waste rice with different ratios.

Further, since the specific gravity of the sorted material discharged and sorted by the specific gravity separator may be measured and the specific gravity separator may be controlled according to the change in the specific gravity, not only the feedforward control but also the feedback control may be performed. Can also be accommodated.

Further, since the supply amount of the sorting object, the blowing amount of the blower fan and the inclination angle of the sorting machine frame are controlled in accordance with the change in the bulk density, the sorting accuracy of the specific gravity sorting machine is improved.

Then, the water content of the sorted material is detected, and the inclination angle of the frame of the sorting machine, the amount of air blown by the blower fan, and the supply amount of the raw material grains are controlled according to the change in the water content. Improved.

In the case of forming a control device for the specific gravity sorter, a sorter plate which is provided in a plurality of stages in an inclined manner so as to be capable of swinging, and a swing sorter frame from below to above the swing sorter frame. A blower fan, a flow rate adjusting means for adjusting a supply amount of the sorting object to the sorting plate, an air flow rate adjusting means for adjusting an air flow rate of the blower fan, and an appropriate inclination angle of the swing sorter frame. In a specific gravity sorter provided with an angle adjusting means for adjusting the adjusting means and a driving device for driving each of the adjusting means, the specific gravity of the selected material is supplied to the selected material supply flow path or the selected material discharge flow path of the specific gravity sorter. Since a flow rate measuring device capable of measurement is provided and the flow rate measuring device and the driving device are connected via a control device, when sorting waste rice having a different composition ratio, no manual operation is required, and automatically. A controllable specific gravity separator can be provided.

The flow rate measuring device comprises a flow path pipe provided on the selected material supply side or the selected material discharge side of the specific gravity separator, a capacitance detector provided on the flow path pipe, Since it is composed of an opening / closing device that shuts off the upper and lower parts of the pipe, a load cell type weight detector that detects the actual weight of the flow pipe, and a moisture sensor that detects the moisture of the sorted material, it has a simple configuration and accuracy. It is possible to detect the flow rate, bulk weight and moisture of the sorted material well.

Further, a plurality of specific gravity separators are connected to each other, and the electromagnetic flow measuring device is provided at an appropriate position of the plurality of specific gravity separators, and the composition ratio is determined based on the detection value of the electromagnetic flow measuring device. If a grain specific gravity sorting system is used to sort different types of scrap rice into three types, upper rice, central rice, and lower rice, it is possible to sort waste rice with high accuracy and high efficiency.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a grain specific gravity sorter of the present invention and a block diagram for controlling the specific gravity sorter.

FIG. 2 is a cross-sectional view of an upper sorter plate and a lower sorter plate in the specific gravity sorter for grain of the present invention.

FIG. 3 is a schematic diagram showing an electromagnetic flow measuring device.

FIG. 4 is a flow chart at the time of feedforward control of the specific gravity sorter for grain of the present invention.

FIG. 5 is a block diagram in the case of performing feedback control of the grain specific gravity sorter of the present invention.

FIG. 6 is a block diagram showing a cereal specific gravity sorting system for sorting waste rice into three types, upper rice, central rice, and lower rice.

FIG. 7 is a block diagram illustrating an electrical connection of the specific gravity sorting system for grain.

FIG. 8 is a flowchart of a specific gravity sorting system for cereals.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Specific gravity sorter 2 Machine stand 3 Oscillating sorter frame 4 Exhaust chamber 5 Suction fan 6 Airway 7 Kernel supply chute 8 Secondary sorting part 9 Upper sorting board 10 Lower sorting board 11 Weaving net part 12 Slotted net part DESCRIPTION OF SYMBOLS 13 Round hole mesh part 14 Window 15 Joint 16 Height adjustment device 17 Drive device 18 Vibration motor 19 Lower rice discharge part 20 Lower rice discharge gutter 21 Kernel supply part 22 Central America discharge part 23 Central America discharge gutter 24 Inclined higher side 25 Upper rice discharge gutter 26 Foreign matter discharge gutter 27 Wind tunnel 28 Window 29 Air flow control valve 30 Drive 31 Connecting pipe 32 Fan case 33 Pipe 34 Gust fan 35 Flow control valve 36 Kernel supply cylinder 37 Drive 38 Electromagnetic flow measurement device 39 Lead wire 40 Arithmetic controller 41 Lead wire 42 Lead wire 43 Lead wire 44 Flow pipe 45 Load cell type weight detector 46 Capacitance detector 47 Re Meter 48 discharge port 49 rotation opening / closing plate 50 cylinder 51 opening / closing device 52 loading cylinder 53 slide opening / closing plate 54 cylinder 55 opening / closing device 56 moisture sensor 57 interface 58 manual / automatic switch 59 flow path 60 flow path 61 flow path 62 flow path 63 flow path 64 flow path 65 flow path 66 flow path 67 flow path 68 flow path

Claims (19)

[Claims] 1. A specific gravity sorter in which a sorter frame provided with a plurality of sorter plates is tilted and swingable, and provided with a blower fan that blows air from below to above. A method of controlling the specific gravity of the material to be sorted, and controlling the specific gravity according to the change in the specific gravity. 2. A specific gravity sorter in which a sorter frame having a plurality of sorter plates provided in a plurality of stages is tilted and swingable, and provided with a blower fan that blows air from below to above, wherein the sorting is performed by the specific gravity sorter. A method for controlling a specific gravity sorter, comprising measuring a specific gravity of a discharged material to be discharged and controlling the specific gravity sorter according to a change in the specific gravity. 3. The control method for a specific gravity sorter according to claim 1, wherein the supply amount of the sorting object is controlled in accordance with a change in bulk density. 4. The control method for a specific gravity sorter according to claim 2, wherein a discharge amount of the sorted material is controlled in accordance with a change in bulk density. 5. The control method for a specific gravity sorter according to claim 1, wherein the amount of air blown is controlled according to a change in volumetric gravity. 6. The control method for a specific gravity sorter according to claim 1, wherein an inclination angle of the sorter frame which is inclined according to a change in volumetric gravity is controlled. 7. The apparatus according to claim 1, wherein the water content of the object to be sorted or the material to be sorted is detected, and the inclination angle of the sorting machine frame is controlled in accordance with a change in the water content. The control method of the specific gravity sorter described above. 8. The apparatus according to claim 1, wherein the water content of the object to be sorted or the material to be sorted is detected, and a supply amount of the object to be sorted or a discharge amount of the material to be sorted is controlled in accordance with a change in the water content. 7. The control method for a specific gravity sorter according to any one of 7. 9. The specific gravity sorter according to claim 1, wherein moisture of the object to be sorted or the object to be sorted is detected, and a blowing amount is controlled according to a change in the moisture. Control method. 10. An oscillating sorting machine frame which is provided with a plurality of sorting plates inclined in a plurality of stages so as to be swingable, a blower fan which ventilates the swing sorting machine frame from below to above, and to the sorting plate. Flow rate adjusting means for adjusting the supply amount of the sorting object, air volume adjusting means for adjusting the air volume of the blower fan, angle adjusting means for adjusting the swing sorter frame to an appropriate inclination angle, and each of the adjustments In a specific gravity separator provided with a driving device for driving the means, in the specific gravity separator, a flow rate of the bulk material of the sorted material or the sorted material can be measured in the sorted material supply flow path or the sorted material discharge flow path. A control device for a specific gravity sorter, wherein a device is provided, and the flow measuring device and each of the driving devices are connected via a control device. 11. A flow rate measuring device comprising: a flow path pipe provided on a supply side or a discharge side of a separation target of the specific gravity separator; a capacitance detector provided on the flow path pipe; An opening and closing device for shutting off an upper part and a lower part of a passage pipe, and a load cell type weight detector for detecting an actual weight of the passage pipe,
The control device for a specific gravity sorter according to claim 10, wherein the control device is formed of a moisture sensor that detects moisture of the sorted material or the sorted material. 12. The control device calculates the bulk weight of the sorted object or the sorted material from the detection values of the capacitance detector and the load cell type weight detector, and according to the calculated amount of change in the bulk weight. The control device for a specific gravity sorter according to claim 11, wherein the control unit controls the flow rate adjusting unit. 13. The control device calculates the bulk weight of the sorted object or the sorted material from the detection values of the capacitance detector and the load cell type weight detector, and according to the calculated amount of change in the bulk weight. The control device for a specific gravity sorter according to claim 11 or 12, wherein the control unit controls the air volume adjusting unit. 14. The control device calculates the weight of the object to be sorted from the values detected by the capacitance detector and the load cell type weight detector, and adjusts the angle in accordance with the calculated change in the weight. 2. The method according to claim 1, further comprising: controlling means.
14. The control device for a specific gravity sorter according to any one of 1, 12, and 13. 15. The control device calculates the water content of the object to be sorted or the selected material from the detection value of the water sensor, and controls the flow rate adjusting means or the angle adjusting means according to the calculated amount of change in the water content. The control device for a specific gravity sorter according to any one of claims 11 to 14, wherein: 16. The control of the specific gravity sorter according to claim 10, wherein the control device performs feedforward control of each adjusting means according to the detected change in the weight or the change in the water content. apparatus. 17. The control device for a specific gravity sorter according to claim 10, wherein the control device feedback-controls each of the adjusting means in accordance with the detected change in the body weight or the change in moisture. . 18. The specific gravity sorter according to claim 10, wherein a plurality of the specific gravity sorters are connected, and the flow rate measuring device is provided at an appropriate position of the plurality of specific gravity sorters. A specific gravity sorting system for sorting waste rice having different composition ratios into three types, upper rice, central rice and lower rice, based on the detection value of the flow rate measuring device. 19. Among the plurality of specific gravity sorters, the first specific gravity sorter positively sorts out the unpolished rice from the sorted material, and the last specific gravity sorter actively sorts the sorted material. 19. The specific gravity sorting system according to claim 18, wherein sorting is performed to discharge the upper rice.